diff options
Diffstat (limited to 'drivers')
269 files changed, 5130 insertions, 2094 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 8951cefb..e6c3ddd 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -315,6 +315,12 @@ config ACPI_HOTPLUG_MEMORY To compile this driver as a module, choose M here: the module will be called acpi_memhotplug. +config ACPI_HOTPLUG_IOAPIC + bool + depends on PCI + depends on X86_IO_APIC + default y + config ACPI_SBS tristate "Smart Battery System" depends on X86 diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index f74317c..b18cd21 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -40,7 +40,7 @@ acpi-$(CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC) += processor_pdc.o acpi-y += ec.o acpi-$(CONFIG_ACPI_DOCK) += dock.o acpi-y += pci_root.o pci_link.o pci_irq.o -acpi-y += acpi_lpss.o +acpi-y += acpi_lpss.o acpi_apd.o acpi-y += acpi_platform.o acpi-y += acpi_pnp.o acpi-y += int340x_thermal.o @@ -70,6 +70,7 @@ obj-$(CONFIG_ACPI_PROCESSOR) += processor.o obj-y += container.o obj-$(CONFIG_ACPI_THERMAL) += thermal.o obj-y += acpi_memhotplug.o +obj-$(CONFIG_ACPI_HOTPLUG_IOAPIC) += ioapic.o obj-$(CONFIG_ACPI_BATTERY) += battery.o obj-$(CONFIG_ACPI_SBS) += sbshc.o obj-$(CONFIG_ACPI_SBS) += sbs.o diff --git a/drivers/acpi/acpi_apd.c b/drivers/acpi/acpi_apd.c new file mode 100644 index 0000000..3984ea9 --- /dev/null +++ b/drivers/acpi/acpi_apd.c @@ -0,0 +1,150 @@ +/* + * AMD ACPI support for ACPI2platform device. + * + * Copyright (c) 2014,2015 AMD Corporation. + * Authors: Ken Xue <Ken.Xue@amd.com> + * Wu, Jeff <Jeff.Wu@amd.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/clk-provider.h> +#include <linux/platform_device.h> +#include <linux/pm_domain.h> +#include <linux/clkdev.h> +#include <linux/acpi.h> +#include <linux/err.h> +#include <linux/clk.h> +#include <linux/pm.h> + +#include "internal.h" + +ACPI_MODULE_NAME("acpi_apd"); +struct apd_private_data; + +/** + * ACPI_APD_SYSFS : add device attributes in sysfs + * ACPI_APD_PM : attach power domain to device + */ +#define ACPI_APD_SYSFS BIT(0) +#define ACPI_APD_PM BIT(1) + +/** + * struct apd_device_desc - a descriptor for apd device + * @flags: device flags like %ACPI_APD_SYSFS, %ACPI_APD_PM + * @fixed_clk_rate: fixed rate input clock source for acpi device; + * 0 means no fixed rate input clock source + * @setup: a hook routine to set device resource during create platform device + * + * Device description defined as acpi_device_id.driver_data + */ +struct apd_device_desc { + unsigned int flags; + unsigned int fixed_clk_rate; + int (*setup)(struct apd_private_data *pdata); +}; + +struct apd_private_data { + struct clk *clk; + struct acpi_device *adev; + const struct apd_device_desc *dev_desc; +}; + +#ifdef CONFIG_X86_AMD_PLATFORM_DEVICE +#define APD_ADDR(desc) ((unsigned long)&desc) + +static int acpi_apd_setup(struct apd_private_data *pdata) +{ + const struct apd_device_desc *dev_desc = pdata->dev_desc; + struct clk *clk = ERR_PTR(-ENODEV); + + if (dev_desc->fixed_clk_rate) { + clk = clk_register_fixed_rate(&pdata->adev->dev, + dev_name(&pdata->adev->dev), + NULL, CLK_IS_ROOT, + dev_desc->fixed_clk_rate); + clk_register_clkdev(clk, NULL, dev_name(&pdata->adev->dev)); + pdata->clk = clk; + } + + return 0; +} + +static struct apd_device_desc cz_i2c_desc = { + .setup = acpi_apd_setup, + .fixed_clk_rate = 133000000, +}; + +static struct apd_device_desc cz_uart_desc = { + .setup = acpi_apd_setup, + .fixed_clk_rate = 48000000, +}; + +#else + +#define APD_ADDR(desc) (0UL) + +#endif /* CONFIG_X86_AMD_PLATFORM_DEVICE */ + +/** +* Create platform device during acpi scan attach handle. +* Return value > 0 on success of creating device. +*/ +static int acpi_apd_create_device(struct acpi_device *adev, + const struct acpi_device_id *id) +{ + const struct apd_device_desc *dev_desc = (void *)id->driver_data; + struct apd_private_data *pdata; + struct platform_device *pdev; + int ret; + + if (!dev_desc) { + pdev = acpi_create_platform_device(adev); + return IS_ERR_OR_NULL(pdev) ? PTR_ERR(pdev) : 1; + } + + pdata = kzalloc(sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + pdata->adev = adev; + pdata->dev_desc = dev_desc; + + if (dev_desc->setup) { + ret = dev_desc->setup(pdata); + if (ret) + goto err_out; + } + + adev->driver_data = pdata; + pdev = acpi_create_platform_device(adev); + if (!IS_ERR_OR_NULL(pdev)) + return 1; + + ret = PTR_ERR(pdev); + adev->driver_data = NULL; + + err_out: + kfree(pdata); + return ret; +} + +static const struct acpi_device_id acpi_apd_device_ids[] = { + /* Generic apd devices */ + { "AMD0010", APD_ADDR(cz_i2c_desc) }, + { "AMD0020", APD_ADDR(cz_uart_desc) }, + { "AMD0030", }, + { } +}; + +static struct acpi_scan_handler apd_handler = { + .ids = acpi_apd_device_ids, + .attach = acpi_apd_create_device, +}; + +void __init acpi_apd_init(void) +{ + acpi_scan_add_handler(&apd_handler); +} diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c index e75737f..02e835f 100644 --- a/drivers/acpi/acpi_lpss.c +++ b/drivers/acpi/acpi_lpss.c @@ -125,7 +125,7 @@ static struct lpss_device_desc lpt_dev_desc = { }; static struct lpss_device_desc lpt_i2c_dev_desc = { - .flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_LTR, + .flags = LPSS_CLK | LPSS_LTR, .prv_offset = 0x800, }; @@ -307,7 +307,7 @@ static int acpi_lpss_create_device(struct acpi_device *adev, { struct lpss_device_desc *dev_desc; struct lpss_private_data *pdata; - struct resource_list_entry *rentry; + struct resource_entry *rentry; struct list_head resource_list; struct platform_device *pdev; int ret; @@ -327,13 +327,15 @@ static int acpi_lpss_create_device(struct acpi_device *adev, goto err_out; list_for_each_entry(rentry, &resource_list, node) - if (resource_type(&rentry->res) == IORESOURCE_MEM) { + if (resource_type(rentry->res) == IORESOURCE_MEM) { if (dev_desc->prv_size_override) pdata->mmio_size = dev_desc->prv_size_override; else - pdata->mmio_size = resource_size(&rentry->res); - pdata->mmio_base = ioremap(rentry->res.start, + pdata->mmio_size = resource_size(rentry->res); + pdata->mmio_base = ioremap(rentry->res->start, pdata->mmio_size); + if (!pdata->mmio_base) + goto err_out; break; } diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c index 23e2319..ee28f4d 100644 --- a/drivers/acpi/acpi_memhotplug.c +++ b/drivers/acpi/acpi_memhotplug.c @@ -101,8 +101,8 @@ acpi_memory_get_resource(struct acpi_resource *resource, void *context) /* Can we combine the resource range information? */ if ((info->caching == address64.info.mem.caching) && (info->write_protect == address64.info.mem.write_protect) && - (info->start_addr + info->length == address64.minimum)) { - info->length += address64.address_length; + (info->start_addr + info->length == address64.address.minimum)) { + info->length += address64.address.address_length; return AE_OK; } } @@ -114,8 +114,8 @@ acpi_memory_get_resource(struct acpi_resource *resource, void *context) INIT_LIST_HEAD(&new->list); new->caching = address64.info.mem.caching; new->write_protect = address64.info.mem.write_protect; - new->start_addr = address64.minimum; - new->length = address64.address_length; + new->start_addr = address64.address.minimum; + new->length = address64.address.address_length; list_add_tail(&new->list, &mem_device->res_list); return AE_OK; diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c index 6ba8beb..1284138 100644 --- a/drivers/acpi/acpi_platform.c +++ b/drivers/acpi/acpi_platform.c @@ -45,7 +45,7 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *adev) struct platform_device *pdev = NULL; struct acpi_device *acpi_parent; struct platform_device_info pdevinfo; - struct resource_list_entry *rentry; + struct resource_entry *rentry; struct list_head resource_list; struct resource *resources = NULL; int count; @@ -71,7 +71,7 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *adev) } count = 0; list_for_each_entry(rentry, &resource_list, node) - resources[count++] = rentry->res; + resources[count++] = *rentry->res; acpi_dev_free_resource_list(&resource_list); } diff --git a/drivers/acpi/acpica/acapps.h b/drivers/acpi/acpica/acapps.h index 3d2c882..d863016 100644 --- a/drivers/acpi/acpica/acapps.h +++ b/drivers/acpi/acpica/acapps.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -47,7 +47,7 @@ /* Common info for tool signons */ #define ACPICA_NAME "Intel ACPI Component Architecture" -#define ACPICA_COPYRIGHT "Copyright (c) 2000 - 2014 Intel Corporation" +#define ACPICA_COPYRIGHT "Copyright (c) 2000 - 2015 Intel Corporation" #if ACPI_MACHINE_WIDTH == 64 #define ACPI_WIDTH "-64" diff --git a/drivers/acpi/acpica/accommon.h b/drivers/acpi/acpica/accommon.h index 6f1c616..853aa2d 100644 --- a/drivers/acpi/acpica/accommon.h +++ b/drivers/acpi/acpica/accommon.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acdebug.h b/drivers/acpi/acpica/acdebug.h index 1d026ff..4169bb8 100644 --- a/drivers/acpi/acpica/acdebug.h +++ b/drivers/acpi/acpica/acdebug.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acdispat.h b/drivers/acpi/acpica/acdispat.h index d3e2cc3..408f04b 100644 --- a/drivers/acpi/acpica/acdispat.h +++ b/drivers/acpi/acpica/acdispat.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h index 7a7811a..228704b7 100644 --- a/drivers/acpi/acpica/acevents.h +++ b/drivers/acpi/acpica/acevents.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -143,8 +143,6 @@ acpi_ev_match_gpe_method(acpi_handle obj_handle, acpi_status acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback, void *context); -u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info); - acpi_status acpi_ev_get_gpe_device(struct acpi_gpe_xrupt_info *gpe_xrupt_info, struct acpi_gpe_block_info *gpe_block, void *context); diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h index 7f60582..a165d25 100644 --- a/drivers/acpi/acpica/acglobal.h +++ b/drivers/acpi/acpica/acglobal.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h index c318d3e..196a552 100644 --- a/drivers/acpi/acpica/achware.h +++ b/drivers/acpi/acpica/achware.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acinterp.h b/drivers/acpi/acpica/acinterp.h index b01f71c..1886bde 100644 --- a/drivers/acpi/acpica/acinterp.h +++ b/drivers/acpi/acpica/acinterp.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h index 680d23b..7add32e 100644 --- a/drivers/acpi/acpica/aclocal.h +++ b/drivers/acpi/acpica/aclocal.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acmacros.h b/drivers/acpi/acpica/acmacros.h index 4bceb11..cf607fe 100644 --- a/drivers/acpi/acpica/acmacros.h +++ b/drivers/acpi/acpica/acmacros.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h index ee1c040..952fbe0 100644 --- a/drivers/acpi/acpica/acnamesp.h +++ b/drivers/acpi/acpica/acnamesp.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acobject.h b/drivers/acpi/acpica/acobject.h index 8abb393..3e9720e 100644 --- a/drivers/acpi/acpica/acobject.h +++ b/drivers/acpi/acpica/acobject.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acopcode.h b/drivers/acpi/acpica/acopcode.h index dda0e6a..a5f17de 100644 --- a/drivers/acpi/acpica/acopcode.h +++ b/drivers/acpi/acpica/acopcode.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acparser.h b/drivers/acpi/acpica/acparser.h index 6168b85..74a390c 100644 --- a/drivers/acpi/acpica/acparser.h +++ b/drivers/acpi/acpica/acparser.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acpredef.h b/drivers/acpi/acpica/acpredef.h index bd3908d..a972d11 100644 --- a/drivers/acpi/acpica/acpredef.h +++ b/drivers/acpi/acpica/acpredef.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acresrc.h b/drivers/acpi/acpica/acresrc.h index 4b008e8..efc4c71 100644 --- a/drivers/acpi/acpica/acresrc.h +++ b/drivers/acpi/acpica/acresrc.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acstruct.h b/drivers/acpi/acpica/acstruct.h index cf73461..d14b547 100644 --- a/drivers/acpi/acpica/acstruct.h +++ b/drivers/acpi/acpica/acstruct.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/actables.h b/drivers/acpi/acpica/actables.h index 1afe46e..1c127a4 100644 --- a/drivers/acpi/acpica/actables.h +++ b/drivers/acpi/acpica/actables.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h index 486d342..c2f03e8 100644 --- a/drivers/acpi/acpica/acutils.h +++ b/drivers/acpi/acpica/acutils.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/amlcode.h b/drivers/acpi/acpica/amlcode.h index 5908cce..3a95068 100644 --- a/drivers/acpi/acpica/amlcode.h +++ b/drivers/acpi/acpica/amlcode.h @@ -7,7 +7,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/amlresrc.h b/drivers/acpi/acpica/amlresrc.h index 3a0beeb..ee0cdd6 100644 --- a/drivers/acpi/acpica/amlresrc.h +++ b/drivers/acpi/acpica/amlresrc.h @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dsargs.c b/drivers/acpi/acpica/dsargs.c index 720b1cd..3e69897 100644 --- a/drivers/acpi/acpica/dsargs.c +++ b/drivers/acpi/acpica/dsargs.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dscontrol.c b/drivers/acpi/acpica/dscontrol.c index 8daf9de..39da9da 100644 --- a/drivers/acpi/acpica/dscontrol.c +++ b/drivers/acpi/acpica/dscontrol.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dsfield.c b/drivers/acpi/acpica/dsfield.c index c576661..43b40de 100644 --- a/drivers/acpi/acpica/dsfield.c +++ b/drivers/acpi/acpica/dsfield.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dsinit.c b/drivers/acpi/acpica/dsinit.c index aee5e45..bbe74bc 100644 --- a/drivers/acpi/acpica/dsinit.c +++ b/drivers/acpi/acpica/dsinit.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c index 3c7f737..d72565a 100644 --- a/drivers/acpi/acpica/dsmethod.c +++ b/drivers/acpi/acpica/dsmethod.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dsmthdat.c b/drivers/acpi/acpica/dsmthdat.c index b67522d..2e4c42b 100644 --- a/drivers/acpi/acpica/dsmthdat.c +++ b/drivers/acpi/acpica/dsmthdat.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dsobject.c b/drivers/acpi/acpica/dsobject.c index a1e7e6b..8a7b07b 100644 --- a/drivers/acpi/acpica/dsobject.c +++ b/drivers/acpi/acpica/dsobject.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dsopcode.c b/drivers/acpi/acpica/dsopcode.c index 6c0759c..7724418 100644 --- a/drivers/acpi/acpica/dsopcode.c +++ b/drivers/acpi/acpica/dsopcode.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dsutils.c b/drivers/acpi/acpica/dsutils.c index 9f74795..e5ff89b 100644 --- a/drivers/acpi/acpica/dsutils.c +++ b/drivers/acpi/acpica/dsutils.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dswexec.c b/drivers/acpi/acpica/dswexec.c index f7f5107..df54d46 100644 --- a/drivers/acpi/acpica/dswexec.c +++ b/drivers/acpi/acpica/dswexec.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dswload.c b/drivers/acpi/acpica/dswload.c index 15623da..843942f 100644 --- a/drivers/acpi/acpica/dswload.c +++ b/drivers/acpi/acpica/dswload.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dswload2.c b/drivers/acpi/acpica/dswload2.c index 2ac28d2..fcaa30c 100644 --- a/drivers/acpi/acpica/dswload2.c +++ b/drivers/acpi/acpica/dswload2.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dswscope.c b/drivers/acpi/acpica/dswscope.c index 9d6e2c1..43b3ea4 100644 --- a/drivers/acpi/acpica/dswscope.c +++ b/drivers/acpi/acpica/dswscope.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/dswstate.c b/drivers/acpi/acpica/dswstate.c index 24f7d5e..89ac202 100644 --- a/drivers/acpi/acpica/dswstate.c +++ b/drivers/acpi/acpica/dswstate.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evevent.c b/drivers/acpi/acpica/evevent.c index c7bffff..bf6873f 100644 --- a/drivers/acpi/acpica/evevent.c +++ b/drivers/acpi/acpica/evevent.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evglock.c b/drivers/acpi/acpica/evglock.c index 3393a73..b78dc7c 100644 --- a/drivers/acpi/acpica/evglock.c +++ b/drivers/acpi/acpica/evglock.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c index aa70154..5ed064e 100644 --- a/drivers/acpi/acpica/evgpe.c +++ b/drivers/acpi/acpica/evgpe.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -114,17 +114,6 @@ acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info) ACPI_FUNCTION_TRACE(ev_enable_gpe); - /* - * We will only allow a GPE to be enabled if it has either an associated - * method (_Lxx/_Exx) or a handler, or is using the implicit notify - * feature. Otherwise, the GPE will be immediately disabled by - * acpi_ev_gpe_dispatch the first time it fires. - */ - if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == - ACPI_GPE_DISPATCH_NONE) { - return_ACPI_STATUS(AE_NO_HANDLER); - } - /* Clear the GPE (of stale events) */ status = acpi_hw_clear_gpe(gpe_event_info); @@ -339,7 +328,11 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list) { acpi_status status; struct acpi_gpe_block_info *gpe_block; + struct acpi_namespace_node *gpe_device; struct acpi_gpe_register_info *gpe_register_info; + struct acpi_gpe_event_info *gpe_event_info; + u32 gpe_number; + struct acpi_gpe_handler_info *gpe_handler_info; u32 int_status = ACPI_INTERRUPT_NOT_HANDLED; u8 enabled_status_byte; u32 status_reg; @@ -367,6 +360,8 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list) gpe_block = gpe_xrupt_list->gpe_block_list_head; while (gpe_block) { + gpe_device = gpe_block->node; + /* * Read all of the 8-bit GPE status and enable registers in this GPE * block, saving all of them. Find all currently active GP events. @@ -442,16 +437,68 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list) /* Examine one GPE bit */ + gpe_event_info = + &gpe_block-> + event_info[((acpi_size) i * + ACPI_GPE_REGISTER_WIDTH) + j]; + gpe_number = + j + gpe_register_info->base_gpe_number; + if (enabled_status_byte & (1 << j)) { - /* - * Found an active GPE. Dispatch the event to a handler - * or method. - */ - int_status |= - acpi_ev_gpe_dispatch(gpe_block-> - node, - &gpe_block-> - event_info[((acpi_size) i * ACPI_GPE_REGISTER_WIDTH) + j], j + gpe_register_info->base_gpe_number); + + /* Invoke global event handler if present */ + + acpi_gpe_count++; + if (acpi_gbl_global_event_handler) { + acpi_gbl_global_event_handler + (ACPI_EVENT_TYPE_GPE, + gpe_device, gpe_number, + acpi_gbl_global_event_handler_context); + } + + /* Found an active GPE */ + + if (ACPI_GPE_DISPATCH_TYPE + (gpe_event_info->flags) == + ACPI_GPE_DISPATCH_RAW_HANDLER) { + + /* Dispatch the event to a raw handler */ + + gpe_handler_info = + gpe_event_info->dispatch. + handler; + + /* + * There is no protection around the namespace node + * and the GPE handler to ensure a safe destruction + * because: + * 1. The namespace node is expected to always + * exist after loading a table. + * 2. The GPE handler is expected to be flushed by + * acpi_os_wait_events_complete() before the + * destruction. + */ + acpi_os_release_lock + (acpi_gbl_gpe_lock, flags); + int_status |= + gpe_handler_info-> + address(gpe_device, + gpe_number, + gpe_handler_info-> + context); + flags = + acpi_os_acquire_lock + (acpi_gbl_gpe_lock); + } else { + /* + * Dispatch the event to a standard handler or + * method. + */ + int_status |= + acpi_ev_gpe_dispatch + (gpe_device, gpe_event_info, + gpe_number); + } } } } @@ -484,52 +531,15 @@ unlock_and_exit: static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context) { struct acpi_gpe_event_info *gpe_event_info = context; - acpi_status status; - struct acpi_gpe_event_info *local_gpe_event_info; + acpi_status status = AE_OK; struct acpi_evaluate_info *info; struct acpi_gpe_notify_info *notify; ACPI_FUNCTION_TRACE(ev_asynch_execute_gpe_method); - /* Allocate a local GPE block */ - - local_gpe_event_info = - ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_event_info)); - if (!local_gpe_event_info) { - ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY, "while handling a GPE")); - return_VOID; - } - - status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); - if (ACPI_FAILURE(status)) { - ACPI_FREE(local_gpe_event_info); - return_VOID; - } - - /* Must revalidate the gpe_number/gpe_block */ - - if (!acpi_ev_valid_gpe_event(gpe_event_info)) { - status = acpi_ut_release_mutex(ACPI_MTX_EVENTS); - ACPI_FREE(local_gpe_event_info); - return_VOID; - } - - /* - * Take a snapshot of the GPE info for this level - we copy the info to - * prevent a race condition with remove_handler/remove_block. - */ - ACPI_MEMCPY(local_gpe_event_info, gpe_event_info, - sizeof(struct acpi_gpe_event_info)); - - status = acpi_ut_release_mutex(ACPI_MTX_EVENTS); - if (ACPI_FAILURE(status)) { - ACPI_FREE(local_gpe_event_info); - return_VOID; - } - /* Do the correct dispatch - normal method or implicit notify */ - switch (local_gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) { + switch (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags)) { case ACPI_GPE_DISPATCH_NOTIFY: /* * Implicit notify. @@ -542,7 +552,7 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context) * June 2012: Expand implicit notify mechanism to support * notifies on multiple device objects. */ - notify = local_gpe_event_info->dispatch.notify_list; + notify = gpe_event_info->dispatch.notify_list; while (ACPI_SUCCESS(status) && notify) { status = acpi_ev_queue_notify_request(notify->device_node, @@ -566,7 +576,7 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context) * _Lxx/_Exx control method that corresponds to this GPE */ info->prefix_node = - local_gpe_event_info->dispatch.method_node; + gpe_event_info->dispatch.method_node; info->flags = ACPI_IGNORE_RETURN_VALUE; status = acpi_ns_evaluate(info); @@ -576,25 +586,27 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context) if (ACPI_FAILURE(status)) { ACPI_EXCEPTION((AE_INFO, status, "while evaluating GPE method [%4.4s]", - acpi_ut_get_node_name - (local_gpe_event_info->dispatch. - method_node))); + acpi_ut_get_node_name(gpe_event_info-> + dispatch. + method_node))); } break; default: - return_VOID; /* Should never happen */ + goto error_exit; /* Should never happen */ } /* Defer enabling of GPE until all notify handlers are done */ status = acpi_os_execute(OSL_NOTIFY_HANDLER, - acpi_ev_asynch_enable_gpe, - local_gpe_event_info); - if (ACPI_FAILURE(status)) { - ACPI_FREE(local_gpe_event_info); + acpi_ev_asynch_enable_gpe, gpe_event_info); + if (ACPI_SUCCESS(status)) { + return_VOID; } + +error_exit: + acpi_ev_asynch_enable_gpe(gpe_event_info); return_VOID; } @@ -622,7 +634,6 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_enable_gpe(void *context) (void)acpi_ev_finish_gpe(gpe_event_info); acpi_os_release_lock(acpi_gbl_gpe_lock, flags); - ACPI_FREE(gpe_event_info); return; } @@ -692,15 +703,6 @@ acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device, ACPI_FUNCTION_TRACE(ev_gpe_dispatch); - /* Invoke global event handler if present */ - - acpi_gpe_count++; - if (acpi_gbl_global_event_handler) { - acpi_gbl_global_event_handler(ACPI_EVENT_TYPE_GPE, gpe_device, - gpe_number, - acpi_gbl_global_event_handler_context); - } - /* * Always disable the GPE so that it does not keep firing before * any asynchronous activity completes (either from the execution @@ -741,7 +743,7 @@ acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device, * If there is neither a handler nor a method, leave the GPE * disabled. */ - switch (gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) { + switch (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags)) { case ACPI_GPE_DISPATCH_HANDLER: /* Invoke the installed handler (at interrupt level) */ diff --git a/drivers/acpi/acpica/evgpeblk.c b/drivers/acpi/acpica/evgpeblk.c index d86699e..e0f24c5 100644 --- a/drivers/acpi/acpica/evgpeblk.c +++ b/drivers/acpi/acpica/evgpeblk.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -474,10 +474,12 @@ acpi_ev_initialize_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info, * Ignore GPEs that have no corresponding _Lxx/_Exx method * and GPEs that are used to wake the system */ - if (((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == + if ((ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) == ACPI_GPE_DISPATCH_NONE) - || ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) - == ACPI_GPE_DISPATCH_HANDLER) + || (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) == + ACPI_GPE_DISPATCH_HANDLER) + || (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) == + ACPI_GPE_DISPATCH_RAW_HANDLER) || (gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) { continue; } diff --git a/drivers/acpi/acpica/evgpeinit.c b/drivers/acpi/acpica/evgpeinit.c index 7be9283..8840296 100644 --- a/drivers/acpi/acpica/evgpeinit.c +++ b/drivers/acpi/acpica/evgpeinit.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -401,15 +401,17 @@ acpi_ev_match_gpe_method(acpi_handle obj_handle, return_ACPI_STATUS(AE_OK); } - if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == - ACPI_GPE_DISPATCH_HANDLER) { + if ((ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) == + ACPI_GPE_DISPATCH_HANDLER) || + (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) == + ACPI_GPE_DISPATCH_RAW_HANDLER)) { /* If there is already a handler, ignore this GPE method */ return_ACPI_STATUS(AE_OK); } - if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == + if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) == ACPI_GPE_DISPATCH_METHOD) { /* * If there is already a method, ignore this method. But check diff --git a/drivers/acpi/acpica/evgpeutil.c b/drivers/acpi/acpica/evgpeutil.c index 17e4bbf..3a958f361 100644 --- a/drivers/acpi/acpica/evgpeutil.c +++ b/drivers/acpi/acpica/evgpeutil.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -108,53 +108,6 @@ unlock_and_exit: /******************************************************************************* * - * FUNCTION: acpi_ev_valid_gpe_event - * - * PARAMETERS: gpe_event_info - Info for this GPE - * - * RETURN: TRUE if the gpe_event is valid - * - * DESCRIPTION: Validate a GPE event. DO NOT CALL FROM INTERRUPT LEVEL. - * Should be called only when the GPE lists are semaphore locked - * and not subject to change. - * - ******************************************************************************/ - -u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info) -{ - struct acpi_gpe_xrupt_info *gpe_xrupt_block; - struct acpi_gpe_block_info *gpe_block; - - ACPI_FUNCTION_ENTRY(); - - /* No need for spin lock since we are not changing any list elements */ - - /* Walk the GPE interrupt levels */ - - gpe_xrupt_block = acpi_gbl_gpe_xrupt_list_head; - while (gpe_xrupt_block) { - gpe_block = gpe_xrupt_block->gpe_block_list_head; - - /* Walk the GPE blocks on this interrupt level */ - - while (gpe_block) { - if ((&gpe_block->event_info[0] <= gpe_event_info) && - (&gpe_block->event_info[gpe_block->gpe_count] > - gpe_event_info)) { - return (TRUE); - } - - gpe_block = gpe_block->next; - } - - gpe_xrupt_block = gpe_xrupt_block->next; - } - - return (FALSE); -} - -/******************************************************************************* - * * FUNCTION: acpi_ev_get_gpe_device * * PARAMETERS: GPE_WALK_CALLBACK @@ -371,8 +324,10 @@ acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info, ACPI_GPE_REGISTER_WIDTH) + j]; - if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == - ACPI_GPE_DISPATCH_HANDLER) { + if ((ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) == + ACPI_GPE_DISPATCH_HANDLER) || + (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) == + ACPI_GPE_DISPATCH_RAW_HANDLER)) { /* Delete an installed handler block */ @@ -380,10 +335,8 @@ acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info, gpe_event_info->dispatch.handler = NULL; gpe_event_info->flags &= ~ACPI_GPE_DISPATCH_MASK; - } else - if ((gpe_event_info-> - flags & ACPI_GPE_DISPATCH_MASK) == - ACPI_GPE_DISPATCH_NOTIFY) { + } else if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) + == ACPI_GPE_DISPATCH_NOTIFY) { /* Delete the implicit notification device list */ diff --git a/drivers/acpi/acpica/evhandler.c b/drivers/acpi/acpica/evhandler.c index 78ac293..74e8595f 100644 --- a/drivers/acpi/acpica/evhandler.c +++ b/drivers/acpi/acpica/evhandler.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evmisc.c b/drivers/acpi/acpica/evmisc.c index 24ea342..f7c9dfe 100644 --- a/drivers/acpi/acpica/evmisc.c +++ b/drivers/acpi/acpica/evmisc.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c index 8eb8575..9abace3 100644 --- a/drivers/acpi/acpica/evregion.c +++ b/drivers/acpi/acpica/evregion.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evrgnini.c b/drivers/acpi/acpica/evrgnini.c index 1b148a4..da32339 100644 --- a/drivers/acpi/acpica/evrgnini.c +++ b/drivers/acpi/acpica/evrgnini.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evsci.c b/drivers/acpi/acpica/evsci.c index 29630e3..0366703 100644 --- a/drivers/acpi/acpica/evsci.c +++ b/drivers/acpi/acpica/evsci.c @@ -6,7 +6,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c index 55a58f3..81f2d9e 100644 --- a/drivers/acpi/acpica/evxface.c +++ b/drivers/acpi/acpica/evxface.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -51,6 +51,16 @@ #define _COMPONENT ACPI_EVENTS ACPI_MODULE_NAME("evxface") +#if (!ACPI_REDUCED_HARDWARE) +/* Local prototypes */ +static acpi_status +acpi_ev_install_gpe_handler(acpi_handle gpe_device, + u32 gpe_number, + u32 type, + u8 is_raw_handler, + acpi_gpe_handler address, void *context); + +#endif /******************************************************************************* @@ -76,6 +86,7 @@ ACPI_MODULE_NAME("evxface") * handlers. * ******************************************************************************/ + acpi_status acpi_install_notify_handler(acpi_handle device, u32 handler_type, @@ -717,32 +728,37 @@ ACPI_EXPORT_SYMBOL(acpi_remove_fixed_event_handler) /******************************************************************************* * - * FUNCTION: acpi_install_gpe_handler + * FUNCTION: acpi_ev_install_gpe_handler * * PARAMETERS: gpe_device - Namespace node for the GPE (NULL for FADT * defined GPEs) * gpe_number - The GPE number within the GPE block * type - Whether this GPE should be treated as an * edge- or level-triggered interrupt. + * is_raw_handler - Whether this GPE should be handled using + * the special GPE handler mode. * address - Address of the handler * context - Value passed to the handler on each GPE * * RETURN: Status * - * DESCRIPTION: Install a handler for a General Purpose Event. + * DESCRIPTION: Internal function to install a handler for a General Purpose + * Event. * ******************************************************************************/ -acpi_status -acpi_install_gpe_handler(acpi_handle gpe_device, - u32 gpe_number, - u32 type, acpi_gpe_handler address, void *context) +static acpi_status +acpi_ev_install_gpe_handler(acpi_handle gpe_device, + u32 gpe_number, + u32 type, + u8 is_raw_handler, + acpi_gpe_handler address, void *context) { struct acpi_gpe_event_info *gpe_event_info; struct acpi_gpe_handler_info *handler; acpi_status status; acpi_cpu_flags flags; - ACPI_FUNCTION_TRACE(acpi_install_gpe_handler); + ACPI_FUNCTION_TRACE(ev_install_gpe_handler); /* Parameter validation */ @@ -775,8 +791,10 @@ acpi_install_gpe_handler(acpi_handle gpe_device, /* Make sure that there isn't a handler there already */ - if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == - ACPI_GPE_DISPATCH_HANDLER) { + if ((ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) == + ACPI_GPE_DISPATCH_HANDLER) || + (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) == + ACPI_GPE_DISPATCH_RAW_HANDLER)) { status = AE_ALREADY_EXISTS; goto free_and_exit; } @@ -793,9 +811,10 @@ acpi_install_gpe_handler(acpi_handle gpe_device, * automatically during initialization, in which case it has to be * disabled now to avoid spurious execution of the handler. */ - if (((handler->original_flags & ACPI_GPE_DISPATCH_METHOD) || - (handler->original_flags & ACPI_GPE_DISPATCH_NOTIFY)) && - gpe_event_info->runtime_count) { + if (((ACPI_GPE_DISPATCH_TYPE(handler->original_flags) == + ACPI_GPE_DISPATCH_METHOD) || + (ACPI_GPE_DISPATCH_TYPE(handler->original_flags) == + ACPI_GPE_DISPATCH_NOTIFY)) && gpe_event_info->runtime_count) { handler->originally_enabled = TRUE; (void)acpi_ev_remove_gpe_reference(gpe_event_info); @@ -816,7 +835,10 @@ acpi_install_gpe_handler(acpi_handle gpe_device, gpe_event_info->flags &= ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK); - gpe_event_info->flags |= (u8)(type | ACPI_GPE_DISPATCH_HANDLER); + gpe_event_info->flags |= + (u8)(type | + (is_raw_handler ? ACPI_GPE_DISPATCH_RAW_HANDLER : + ACPI_GPE_DISPATCH_HANDLER)); acpi_os_release_lock(acpi_gbl_gpe_lock, flags); @@ -830,10 +852,78 @@ free_and_exit: goto unlock_and_exit; } +/******************************************************************************* + * + * FUNCTION: acpi_install_gpe_handler + * + * PARAMETERS: gpe_device - Namespace node for the GPE (NULL for FADT + * defined GPEs) + * gpe_number - The GPE number within the GPE block + * type - Whether this GPE should be treated as an + * edge- or level-triggered interrupt. + * address - Address of the handler + * context - Value passed to the handler on each GPE + * + * RETURN: Status + * + * DESCRIPTION: Install a handler for a General Purpose Event. + * + ******************************************************************************/ + +acpi_status +acpi_install_gpe_handler(acpi_handle gpe_device, + u32 gpe_number, + u32 type, acpi_gpe_handler address, void *context) +{ + acpi_status status; + + ACPI_FUNCTION_TRACE(acpi_install_gpe_handler); + + status = + acpi_ev_install_gpe_handler(gpe_device, gpe_number, type, FALSE, + address, context); + + return_ACPI_STATUS(status); +} + ACPI_EXPORT_SYMBOL(acpi_install_gpe_handler) /******************************************************************************* * + * FUNCTION: acpi_install_gpe_raw_handler + * + * PARAMETERS: gpe_device - Namespace node for the GPE (NULL for FADT + * defined GPEs) + * gpe_number - The GPE number within the GPE block + * type - Whether this GPE should be treated as an + * edge- or level-triggered interrupt. + * address - Address of the handler + * context - Value passed to the handler on each GPE + * + * RETURN: Status + * + * DESCRIPTION: Install a handler for a General Purpose Event. + * + ******************************************************************************/ +acpi_status +acpi_install_gpe_raw_handler(acpi_handle gpe_device, + u32 gpe_number, + u32 type, acpi_gpe_handler address, void *context) +{ + acpi_status status; + + ACPI_FUNCTION_TRACE(acpi_install_gpe_raw_handler); + + status = acpi_ev_install_gpe_handler(gpe_device, gpe_number, type, TRUE, + address, context); + + return_ACPI_STATUS(status); +} + +ACPI_EXPORT_SYMBOL(acpi_install_gpe_raw_handler) + +/******************************************************************************* + * * FUNCTION: acpi_remove_gpe_handler * * PARAMETERS: gpe_device - Namespace node for the GPE (NULL for FADT @@ -880,8 +970,10 @@ acpi_remove_gpe_handler(acpi_handle gpe_device, /* Make sure that a handler is indeed installed */ - if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) != - ACPI_GPE_DISPATCH_HANDLER) { + if ((ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) != + ACPI_GPE_DISPATCH_HANDLER) && + (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) != + ACPI_GPE_DISPATCH_RAW_HANDLER)) { status = AE_NOT_EXIST; goto unlock_and_exit; } @@ -896,6 +988,7 @@ acpi_remove_gpe_handler(acpi_handle gpe_device, /* Remove the handler */ handler = gpe_event_info->dispatch.handler; + gpe_event_info->dispatch.handler = NULL; /* Restore Method node (if any), set dispatch flags */ @@ -909,9 +1002,10 @@ acpi_remove_gpe_handler(acpi_handle gpe_device, * enabled, it should be enabled at this point to restore the * post-initialization configuration. */ - if (((handler->original_flags & ACPI_GPE_DISPATCH_METHOD) || - (handler->original_flags & ACPI_GPE_DISPATCH_NOTIFY)) && - handler->originally_enabled) { + if (((ACPI_GPE_DISPATCH_TYPE(handler->original_flags) == + ACPI_GPE_DISPATCH_METHOD) || + (ACPI_GPE_DISPATCH_TYPE(handler->original_flags) == + ACPI_GPE_DISPATCH_NOTIFY)) && handler->originally_enabled) { (void)acpi_ev_add_gpe_reference(gpe_event_info); } diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c index bb8cbf5..df06a23 100644 --- a/drivers/acpi/acpica/evxfevnt.c +++ b/drivers/acpi/acpica/evxfevnt.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/evxfgpe.c b/drivers/acpi/acpica/evxfgpe.c index e889a53..70eb47e 100644 --- a/drivers/acpi/acpica/evxfgpe.c +++ b/drivers/acpi/acpica/evxfgpe.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -132,7 +132,7 @@ acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number) */ gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); if (gpe_event_info) { - if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) != + if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) != ACPI_GPE_DISPATCH_NONE) { status = acpi_ev_add_gpe_reference(gpe_event_info); } else { @@ -183,6 +183,77 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number) ACPI_EXPORT_SYMBOL(acpi_disable_gpe) +/******************************************************************************* + * + * FUNCTION: acpi_set_gpe + * + * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 + * gpe_number - GPE level within the GPE block + * action - ACPI_GPE_ENABLE or ACPI_GPE_DISABLE + * + * RETURN: Status + * + * DESCRIPTION: Enable or disable an individual GPE. This function bypasses + * the reference count mechanism used in the acpi_enable_gpe(), + * acpi_disable_gpe() interfaces. + * This API is typically used by the GPE raw handler mode driver + * to switch between the polling mode and the interrupt mode after + * the driver has enabled the GPE. + * The APIs should be invoked in this order: + * acpi_enable_gpe() <- Ensure the reference count > 0 + * acpi_set_gpe(ACPI_GPE_DISABLE) <- Enter polling mode + * acpi_set_gpe(ACPI_GPE_ENABLE) <- Leave polling mode + * acpi_disable_gpe() <- Decrease the reference count + * + * Note: If a GPE is shared by 2 silicon components, then both the drivers + * should support GPE polling mode or disabling the GPE for long period + * for one driver may break the other. So use it with care since all + * firmware _Lxx/_Exx handlers currently rely on the GPE interrupt mode. + * + ******************************************************************************/ +acpi_status acpi_set_gpe(acpi_handle gpe_device, u32 gpe_number, u8 action) +{ + struct acpi_gpe_event_info *gpe_event_info; + acpi_status status; + acpi_cpu_flags flags; + + ACPI_FUNCTION_TRACE(acpi_set_gpe); + + flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + + /* Ensure that we have a valid GPE number */ + + gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); + if (!gpe_event_info) { + status = AE_BAD_PARAMETER; + goto unlock_and_exit; + } + + /* Perform the action */ + + switch (action) { + case ACPI_GPE_ENABLE: + + status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_ENABLE); + break; + + case ACPI_GPE_DISABLE: + + status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE); + break; + + default: + + status = AE_BAD_PARAMETER; + break; + } + +unlock_and_exit: + acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + return_ACPI_STATUS(status); +} + +ACPI_EXPORT_SYMBOL(acpi_set_gpe) /******************************************************************************* * @@ -313,7 +384,7 @@ acpi_setup_gpe_for_wake(acpi_handle wake_device, * known as an "implicit notify". Note: The GPE is assumed to be * level-triggered (for windows compatibility). */ - if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == + if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) == ACPI_GPE_DISPATCH_NONE) { /* * This is the first device for implicit notify on this GPE. @@ -327,7 +398,7 @@ acpi_setup_gpe_for_wake(acpi_handle wake_device, * If we already have an implicit notify on this GPE, add * this device to the notify list. */ - if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == + if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) == ACPI_GPE_DISPATCH_NOTIFY) { /* Ensure that the device is not already in the list */ @@ -530,6 +601,49 @@ unlock_and_exit: ACPI_EXPORT_SYMBOL(acpi_get_gpe_status) +/******************************************************************************* + * + * FUNCTION: acpi_finish_gpe + * + * PARAMETERS: gpe_device - Namespace node for the GPE Block + * (NULL for FADT defined GPEs) + * gpe_number - GPE level within the GPE block + * + * RETURN: Status + * + * DESCRIPTION: Clear and conditionally reenable a GPE. This completes the GPE + * processing. Intended for use by asynchronous host-installed + * GPE handlers. The GPE is only reenabled if the enable_for_run bit + * is set in the GPE info. + * + ******************************************************************************/ +acpi_status acpi_finish_gpe(acpi_handle gpe_device, u32 gpe_number) +{ + struct acpi_gpe_event_info *gpe_event_info; + acpi_status status; + acpi_cpu_flags flags; + + ACPI_FUNCTION_TRACE(acpi_finish_gpe); + + flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + + /* Ensure that we have a valid GPE number */ + + gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); + if (!gpe_event_info) { + status = AE_BAD_PARAMETER; + goto unlock_and_exit; + } + + status = acpi_ev_finish_gpe(gpe_event_info); + +unlock_and_exit: + acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + return_ACPI_STATUS(status); +} + +ACPI_EXPORT_SYMBOL(acpi_finish_gpe) + /****************************************************************************** * * FUNCTION: acpi_disable_all_gpes @@ -604,7 +718,6 @@ ACPI_EXPORT_SYMBOL(acpi_enable_all_runtime_gpes) * all GPE blocks. * ******************************************************************************/ - acpi_status acpi_enable_all_wakeup_gpes(void) { acpi_status status; diff --git a/drivers/acpi/acpica/evxfregn.c b/drivers/acpi/acpica/evxfregn.c index 2d6f187..f21afba 100644 --- a/drivers/acpi/acpica/evxfregn.c +++ b/drivers/acpi/acpica/evxfregn.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exconfig.c b/drivers/acpi/acpica/exconfig.c index 7d29494..6e0df2b 100644 --- a/drivers/acpi/acpica/exconfig.c +++ b/drivers/acpi/acpica/exconfig.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exconvrt.c b/drivers/acpi/acpica/exconvrt.c index c545386..89a976b 100644 --- a/drivers/acpi/acpica/exconvrt.c +++ b/drivers/acpi/acpica/exconvrt.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/excreate.c b/drivers/acpi/acpica/excreate.c index 95d23da..aaeea48 100644 --- a/drivers/acpi/acpica/excreate.c +++ b/drivers/acpi/acpica/excreate.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exdebug.c b/drivers/acpi/acpica/exdebug.c index 6fbfad4..e67d0ac 100644 --- a/drivers/acpi/acpica/exdebug.c +++ b/drivers/acpi/acpica/exdebug.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exdump.c b/drivers/acpi/acpica/exdump.c index 0f23c3f..7c213b6 100644 --- a/drivers/acpi/acpica/exdump.c +++ b/drivers/acpi/acpica/exdump.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exfield.c b/drivers/acpi/acpica/exfield.c index b994845..c161dd9 100644 --- a/drivers/acpi/acpica/exfield.c +++ b/drivers/acpi/acpica/exfield.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exfldio.c b/drivers/acpi/acpica/exfldio.c index 1d1b27a..4947992 100644 --- a/drivers/acpi/acpica/exfldio.c +++ b/drivers/acpi/acpica/exfldio.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exmisc.c b/drivers/acpi/acpica/exmisc.c index 2207e62..b56fc9d 100644 --- a/drivers/acpi/acpica/exmisc.c +++ b/drivers/acpi/acpica/exmisc.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exmutex.c b/drivers/acpi/acpica/exmutex.c index b49ea2a..472030f 100644 --- a/drivers/acpi/acpica/exmutex.c +++ b/drivers/acpi/acpica/exmutex.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exnames.c b/drivers/acpi/acpica/exnames.c index dbb03b5..453b00c 100644 --- a/drivers/acpi/acpica/exnames.c +++ b/drivers/acpi/acpica/exnames.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exoparg1.c b/drivers/acpi/acpica/exoparg1.c index 1b8e941..7793068 100644 --- a/drivers/acpi/acpica/exoparg1.c +++ b/drivers/acpi/acpica/exoparg1.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exoparg2.c b/drivers/acpi/acpica/exoparg2.c index 2ede656..fcc618a 100644 --- a/drivers/acpi/acpica/exoparg2.c +++ b/drivers/acpi/acpica/exoparg2.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exoparg3.c b/drivers/acpi/acpica/exoparg3.c index 363767c..b813fed 100644 --- a/drivers/acpi/acpica/exoparg3.c +++ b/drivers/acpi/acpica/exoparg3.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exoparg6.c b/drivers/acpi/acpica/exoparg6.c index 29e9e99..c930edd 100644 --- a/drivers/acpi/acpica/exoparg6.c +++ b/drivers/acpi/acpica/exoparg6.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exprep.c b/drivers/acpi/acpica/exprep.c index 118e942..4c2836d 100644 --- a/drivers/acpi/acpica/exprep.c +++ b/drivers/acpi/acpica/exprep.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c index cd5288a..0fe188e2 100644 --- a/drivers/acpi/acpica/exregion.c +++ b/drivers/acpi/acpica/exregion.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exresnte.c b/drivers/acpi/acpica/exresnte.c index ab06026..c7e3b92 100644 --- a/drivers/acpi/acpica/exresnte.c +++ b/drivers/acpi/acpica/exresnte.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exresolv.c b/drivers/acpi/acpica/exresolv.c index 3cde553..b6b7f3a 100644 --- a/drivers/acpi/acpica/exresolv.c +++ b/drivers/acpi/acpica/exresolv.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exresop.c b/drivers/acpi/acpica/exresop.c index 3af8de3..d2964af 100644 --- a/drivers/acpi/acpica/exresop.c +++ b/drivers/acpi/acpica/exresop.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exstore.c b/drivers/acpi/acpica/exstore.c index daf49f7..a7eee24 100644 --- a/drivers/acpi/acpica/exstore.c +++ b/drivers/acpi/acpica/exstore.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exstoren.c b/drivers/acpi/acpica/exstoren.c index 04bd16c..3101607 100644 --- a/drivers/acpi/acpica/exstoren.c +++ b/drivers/acpi/acpica/exstoren.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exstorob.c b/drivers/acpi/acpica/exstorob.c index fd11018..6fa3c8d 100644 --- a/drivers/acpi/acpica/exstorob.c +++ b/drivers/acpi/acpica/exstorob.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exsystem.c b/drivers/acpi/acpica/exsystem.c index f7da641..0545065 100644 --- a/drivers/acpi/acpica/exsystem.c +++ b/drivers/acpi/acpica/exsystem.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/exutils.c b/drivers/acpi/acpica/exutils.c index d9d72df..3f4225e 100644 --- a/drivers/acpi/acpica/exutils.c +++ b/drivers/acpi/acpica/exutils.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwacpi.c b/drivers/acpi/acpica/hwacpi.c index 1e66d96..e5c5949 100644 --- a/drivers/acpi/acpica/hwacpi.c +++ b/drivers/acpi/acpica/hwacpi.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwesleep.c b/drivers/acpi/acpica/hwesleep.c index 858fdd6..e5599f6 100644 --- a/drivers/acpi/acpica/hwesleep.c +++ b/drivers/acpi/acpica/hwesleep.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwgpe.c b/drivers/acpi/acpica/hwgpe.c index 494027f..84bc550 100644 --- a/drivers/acpi/acpica/hwgpe.c +++ b/drivers/acpi/acpica/hwgpe.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -54,6 +54,10 @@ acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info, struct acpi_gpe_block_info *gpe_block, void *context); +static acpi_status +acpi_hw_gpe_enable_write(u8 enable_mask, + struct acpi_gpe_register_info *gpe_register_info); + /****************************************************************************** * * FUNCTION: acpi_hw_get_gpe_register_bit @@ -146,7 +150,7 @@ acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u32 action) status = acpi_hw_write(enable_mask, &gpe_register_info->enable_address); if (ACPI_SUCCESS(status) && (action & ACPI_GPE_SAVE_MASK)) { - gpe_register_info->enable_mask = enable_mask; + gpe_register_info->enable_mask = (u8)enable_mask; } return (status); } @@ -221,7 +225,7 @@ acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info, /* GPE currently handled? */ - if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) != + if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) != ACPI_GPE_DISPATCH_NONE) { local_event_status |= ACPI_EVENT_FLAG_HAS_HANDLER; } diff --git a/drivers/acpi/acpica/hwpci.c b/drivers/acpi/acpica/hwpci.c index 6aade8e..c5214de 100644 --- a/drivers/acpi/acpica/hwpci.c +++ b/drivers/acpi/acpica/hwpci.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwregs.c b/drivers/acpi/acpica/hwregs.c index a4c34d2..3cf77af 100644 --- a/drivers/acpi/acpica/hwregs.c +++ b/drivers/acpi/acpica/hwregs.c @@ -6,7 +6,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c index d590693..7d21cae 100644 --- a/drivers/acpi/acpica/hwsleep.c +++ b/drivers/acpi/acpica/hwsleep.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwtimer.c b/drivers/acpi/acpica/hwtimer.c index 76ab5c1..675c709 100644 --- a/drivers/acpi/acpica/hwtimer.c +++ b/drivers/acpi/acpica/hwtimer.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwvalid.c b/drivers/acpi/acpica/hwvalid.c index 6b91912..2bd33fe 100644 --- a/drivers/acpi/acpica/hwvalid.c +++ b/drivers/acpi/acpica/hwvalid.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwxface.c b/drivers/acpi/acpica/hwxface.c index 96d007df..5f97468 100644 --- a/drivers/acpi/acpica/hwxface.c +++ b/drivers/acpi/acpica/hwxface.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/hwxfsleep.c b/drivers/acpi/acpica/hwxfsleep.c index 6921c7f..3b37676 100644 --- a/drivers/acpi/acpica/hwxfsleep.c +++ b/drivers/acpi/acpica/hwxfsleep.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsaccess.c b/drivers/acpi/acpica/nsaccess.c index f1249e3..24fa19a 100644 --- a/drivers/acpi/acpica/nsaccess.c +++ b/drivers/acpi/acpica/nsaccess.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsalloc.c b/drivers/acpi/acpica/nsalloc.c index 607eb9e..e107f92 100644 --- a/drivers/acpi/acpica/nsalloc.c +++ b/drivers/acpi/acpica/nsalloc.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsarguments.c b/drivers/acpi/acpica/nsarguments.c index 80fcfc8..5d347a7 100644 --- a/drivers/acpi/acpica/nsarguments.c +++ b/drivers/acpi/acpica/nsarguments.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsconvert.c b/drivers/acpi/acpica/nsconvert.c index b55642c..1a8b39c 100644 --- a/drivers/acpi/acpica/nsconvert.c +++ b/drivers/acpi/acpica/nsconvert.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsdump.c b/drivers/acpi/acpica/nsdump.c index 3d88ef4..80f097e 100644 --- a/drivers/acpi/acpica/nsdump.c +++ b/drivers/acpi/acpica/nsdump.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsdumpdv.c b/drivers/acpi/acpica/nsdumpdv.c index 42d3710..7dc367e 100644 --- a/drivers/acpi/acpica/nsdumpdv.c +++ b/drivers/acpi/acpica/nsdumpdv.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nseval.c b/drivers/acpi/acpica/nseval.c index e634a05..7bcc68f 100644 --- a/drivers/acpi/acpica/nseval.c +++ b/drivers/acpi/acpica/nseval.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsinit.c b/drivers/acpi/acpica/nsinit.c index a3fb7e4..4a85c45 100644 --- a/drivers/acpi/acpica/nsinit.c +++ b/drivers/acpi/acpica/nsinit.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsload.c b/drivers/acpi/acpica/nsload.c index 7c9d018..bd6cd4a 100644 --- a/drivers/acpi/acpica/nsload.c +++ b/drivers/acpi/acpica/nsload.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsnames.c b/drivers/acpi/acpica/nsnames.c index 7eee0a6..d293d97 100644 --- a/drivers/acpi/acpica/nsnames.c +++ b/drivers/acpi/acpica/nsnames.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsobject.c b/drivers/acpi/acpica/nsobject.c index a42ee9d..677bc93 100644 --- a/drivers/acpi/acpica/nsobject.c +++ b/drivers/acpi/acpica/nsobject.c @@ -6,7 +6,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsparse.c b/drivers/acpi/acpica/nsparse.c index e83cff3..c95a119 100644 --- a/drivers/acpi/acpica/nsparse.c +++ b/drivers/acpi/acpica/nsparse.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nspredef.c b/drivers/acpi/acpica/nspredef.c index 392910f..0eb5431 100644 --- a/drivers/acpi/acpica/nspredef.c +++ b/drivers/acpi/acpica/nspredef.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsprepkg.c b/drivers/acpi/acpica/nsprepkg.c index 1b13b92..8b79958 100644 --- a/drivers/acpi/acpica/nsprepkg.c +++ b/drivers/acpi/acpica/nsprepkg.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsrepair.c b/drivers/acpi/acpica/nsrepair.c index 7e417aa..151fcd9 100644 --- a/drivers/acpi/acpica/nsrepair.c +++ b/drivers/acpi/acpica/nsrepair.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsrepair2.c b/drivers/acpi/acpica/nsrepair2.c index b09e6be..c30672d 100644 --- a/drivers/acpi/acpica/nsrepair2.c +++ b/drivers/acpi/acpica/nsrepair2.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nssearch.c b/drivers/acpi/acpica/nssearch.c index af1cc42..4a9d4a6 100644 --- a/drivers/acpi/acpica/nssearch.c +++ b/drivers/acpi/acpica/nssearch.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsutils.c b/drivers/acpi/acpica/nsutils.c index 4a5e3f5..6ad0200 100644 --- a/drivers/acpi/acpica/nsutils.c +++ b/drivers/acpi/acpica/nsutils.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nswalk.c b/drivers/acpi/acpica/nswalk.c index 4758a1f..c68609a 100644 --- a/drivers/acpi/acpica/nswalk.c +++ b/drivers/acpi/acpica/nswalk.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsxfeval.c b/drivers/acpi/acpica/nsxfeval.c index 4bd558b..b6030a2 100644 --- a/drivers/acpi/acpica/nsxfeval.c +++ b/drivers/acpi/acpica/nsxfeval.c @@ -6,7 +6,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsxfname.c b/drivers/acpi/acpica/nsxfname.c index 8c6c11c..d66c326 100644 --- a/drivers/acpi/acpica/nsxfname.c +++ b/drivers/acpi/acpica/nsxfname.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/nsxfobj.c b/drivers/acpi/acpica/nsxfobj.c index dae9401..7933835 100644 --- a/drivers/acpi/acpica/nsxfobj.c +++ b/drivers/acpi/acpica/nsxfobj.c @@ -6,7 +6,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -53,50 +53,6 @@ ACPI_MODULE_NAME("nsxfobj") /******************************************************************************* * - * FUNCTION: acpi_get_id - * - * PARAMETERS: Handle - Handle of object whose id is desired - * ret_id - Where the id will be placed - * - * RETURN: Status - * - * DESCRIPTION: This routine returns the owner id associated with a handle - * - ******************************************************************************/ -acpi_status acpi_get_id(acpi_handle handle, acpi_owner_id * ret_id) -{ - struct acpi_namespace_node *node; - acpi_status status; - - /* Parameter Validation */ - - if (!ret_id) { - return (AE_BAD_PARAMETER); - } - - status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE(status)) { - return (status); - } - - /* Convert and validate the handle */ - - node = acpi_ns_validate_handle(handle); - if (!node) { - (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); - return (AE_BAD_PARAMETER); - } - - *ret_id = node->owner_id; - - status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); - return (status); -} - -ACPI_EXPORT_SYMBOL(acpi_get_id) - -/******************************************************************************* - * * FUNCTION: acpi_get_type * * PARAMETERS: handle - Handle of object whose type is desired diff --git a/drivers/acpi/acpica/psargs.c b/drivers/acpi/acpica/psargs.c index 314d314..6d03877 100644 --- a/drivers/acpi/acpica/psargs.c +++ b/drivers/acpi/acpica/psargs.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/psloop.c b/drivers/acpi/acpica/psloop.c index b058e23..9043722 100644 --- a/drivers/acpi/acpica/psloop.c +++ b/drivers/acpi/acpica/psloop.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/psobject.c b/drivers/acpi/acpica/psobject.c index a688507..2f5ddd8 100644 --- a/drivers/acpi/acpica/psobject.c +++ b/drivers/acpi/acpica/psobject.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/psopcode.c b/drivers/acpi/acpica/psopcode.c index 1755d2a..1af4a40 100644 --- a/drivers/acpi/acpica/psopcode.c +++ b/drivers/acpi/acpica/psopcode.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/psopinfo.c b/drivers/acpi/acpica/psopinfo.c index 0d8d37ff..e18e7c4 100644 --- a/drivers/acpi/acpica/psopinfo.c +++ b/drivers/acpi/acpica/psopinfo.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/psparse.c b/drivers/acpi/acpica/psparse.c index 6d27b59..a555f7f 100644 --- a/drivers/acpi/acpica/psparse.c +++ b/drivers/acpi/acpica/psparse.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/psscope.c b/drivers/acpi/acpica/psscope.c index 32d250f..9d669cc 100644 --- a/drivers/acpi/acpica/psscope.c +++ b/drivers/acpi/acpica/psscope.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/pstree.c b/drivers/acpi/acpica/pstree.c index 0b64181..89984f3 100644 --- a/drivers/acpi/acpica/pstree.c +++ b/drivers/acpi/acpica/pstree.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/psutils.c b/drivers/acpi/acpica/psutils.c index 3cd4880..960505a 100644 --- a/drivers/acpi/acpica/psutils.c +++ b/drivers/acpi/acpica/psutils.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/pswalk.c b/drivers/acpi/acpica/pswalk.c index 9cb07e1..ba5f691 100644 --- a/drivers/acpi/acpica/pswalk.c +++ b/drivers/acpi/acpica/pswalk.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/psxface.c b/drivers/acpi/acpica/psxface.c index e135aca..841a5ea 100644 --- a/drivers/acpi/acpica/psxface.c +++ b/drivers/acpi/acpica/psxface.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsaddr.c b/drivers/acpi/acpica/rsaddr.c index 916fd09..66d406e 100644 --- a/drivers/acpi/acpica/rsaddr.c +++ b/drivers/acpi/acpica/rsaddr.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -74,7 +74,7 @@ struct acpi_rsconvert_info acpi_rs_convert_address16[5] = { * Address Translation Offset * Address Length */ - {ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.address16.granularity), + {ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.address16.address.granularity), AML_OFFSET(address16.granularity), 5}, @@ -112,7 +112,7 @@ struct acpi_rsconvert_info acpi_rs_convert_address32[5] = { * Address Translation Offset * Address Length */ - {ACPI_RSC_MOVE32, ACPI_RS_OFFSET(data.address32.granularity), + {ACPI_RSC_MOVE32, ACPI_RS_OFFSET(data.address32.address.granularity), AML_OFFSET(address32.granularity), 5}, @@ -150,7 +150,7 @@ struct acpi_rsconvert_info acpi_rs_convert_address64[5] = { * Address Translation Offset * Address Length */ - {ACPI_RSC_MOVE64, ACPI_RS_OFFSET(data.address64.granularity), + {ACPI_RSC_MOVE64, ACPI_RS_OFFSET(data.address64.address.granularity), AML_OFFSET(address64.granularity), 5}, @@ -194,7 +194,8 @@ struct acpi_rsconvert_info acpi_rs_convert_ext_address64[5] = { * Address Length * Type-Specific Attribute */ - {ACPI_RSC_MOVE64, ACPI_RS_OFFSET(data.ext_address64.granularity), + {ACPI_RSC_MOVE64, + ACPI_RS_OFFSET(data.ext_address64.address.granularity), AML_OFFSET(ext_address64.granularity), 6} }; diff --git a/drivers/acpi/acpica/rscalc.c b/drivers/acpi/acpica/rscalc.c index 6895567..cb739a6 100644 --- a/drivers/acpi/acpica/rscalc.c +++ b/drivers/acpi/acpica/rscalc.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rscreate.c b/drivers/acpi/acpica/rscreate.c index 049d9c2..15434e4 100644 --- a/drivers/acpi/acpica/rscreate.c +++ b/drivers/acpi/acpica/rscreate.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsdump.c b/drivers/acpi/acpica/rsdump.c index c3c56b5..1539394 100644 --- a/drivers/acpi/acpica/rsdump.c +++ b/drivers/acpi/acpica/rsdump.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsdumpinfo.c b/drivers/acpi/acpica/rsdumpinfo.c index 2f9332d..b29d9ec 100644 --- a/drivers/acpi/acpica/rsdumpinfo.c +++ b/drivers/acpi/acpica/rsdumpinfo.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -183,15 +183,15 @@ struct acpi_rsdump_info acpi_rs_dump_address16[8] = { {ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_address16), "16-Bit WORD Address Space", NULL}, {ACPI_RSD_ADDRESS, 0, NULL, NULL}, - {ACPI_RSD_UINT16, ACPI_RSD_OFFSET(address16.granularity), "Granularity", - NULL}, - {ACPI_RSD_UINT16, ACPI_RSD_OFFSET(address16.minimum), "Address Minimum", - NULL}, - {ACPI_RSD_UINT16, ACPI_RSD_OFFSET(address16.maximum), "Address Maximum", - NULL}, - {ACPI_RSD_UINT16, ACPI_RSD_OFFSET(address16.translation_offset), + {ACPI_RSD_UINT16, ACPI_RSD_OFFSET(address16.address.granularity), + "Granularity", NULL}, + {ACPI_RSD_UINT16, ACPI_RSD_OFFSET(address16.address.minimum), + "Address Minimum", NULL}, + {ACPI_RSD_UINT16, ACPI_RSD_OFFSET(address16.address.maximum), + "Address Maximum", NULL}, + {ACPI_RSD_UINT16, ACPI_RSD_OFFSET(address16.address.translation_offset), "Translation Offset", NULL}, - {ACPI_RSD_UINT16, ACPI_RSD_OFFSET(address16.address_length), + {ACPI_RSD_UINT16, ACPI_RSD_OFFSET(address16.address.address_length), "Address Length", NULL}, {ACPI_RSD_SOURCE, ACPI_RSD_OFFSET(address16.resource_source), NULL, NULL} }; @@ -200,15 +200,15 @@ struct acpi_rsdump_info acpi_rs_dump_address32[8] = { {ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_address32), "32-Bit DWORD Address Space", NULL}, {ACPI_RSD_ADDRESS, 0, NULL, NULL}, - {ACPI_RSD_UINT32, ACPI_RSD_OFFSET(address32.granularity), "Granularity", - NULL}, - {ACPI_RSD_UINT32, ACPI_RSD_OFFSET(address32.minimum), "Address Minimum", - NULL}, - {ACPI_RSD_UINT32, ACPI_RSD_OFFSET(address32.maximum), "Address Maximum", - NULL}, - {ACPI_RSD_UINT32, ACPI_RSD_OFFSET(address32.translation_offset), + {ACPI_RSD_UINT32, ACPI_RSD_OFFSET(address32.address.granularity), + "Granularity", NULL}, + {ACPI_RSD_UINT32, ACPI_RSD_OFFSET(address32.address.minimum), + "Address Minimum", NULL}, + {ACPI_RSD_UINT32, ACPI_RSD_OFFSET(address32.address.maximum), + "Address Maximum", NULL}, + {ACPI_RSD_UINT32, ACPI_RSD_OFFSET(address32.address.translation_offset), "Translation Offset", NULL}, - {ACPI_RSD_UINT32, ACPI_RSD_OFFSET(address32.address_length), + {ACPI_RSD_UINT32, ACPI_RSD_OFFSET(address32.address.address_length), "Address Length", NULL}, {ACPI_RSD_SOURCE, ACPI_RSD_OFFSET(address32.resource_source), NULL, NULL} }; @@ -217,15 +217,15 @@ struct acpi_rsdump_info acpi_rs_dump_address64[8] = { {ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_address64), "64-Bit QWORD Address Space", NULL}, {ACPI_RSD_ADDRESS, 0, NULL, NULL}, - {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(address64.granularity), "Granularity", - NULL}, - {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(address64.minimum), "Address Minimum", - NULL}, - {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(address64.maximum), "Address Maximum", - NULL}, - {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(address64.translation_offset), + {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(address64.address.granularity), + "Granularity", NULL}, + {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(address64.address.minimum), + "Address Minimum", NULL}, + {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(address64.address.maximum), + "Address Maximum", NULL}, + {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(address64.address.translation_offset), "Translation Offset", NULL}, - {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(address64.address_length), + {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(address64.address.address_length), "Address Length", NULL}, {ACPI_RSD_SOURCE, ACPI_RSD_OFFSET(address64.resource_source), NULL, NULL} }; @@ -234,15 +234,16 @@ struct acpi_rsdump_info acpi_rs_dump_ext_address64[8] = { {ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_ext_address64), "64-Bit Extended Address Space", NULL}, {ACPI_RSD_ADDRESS, 0, NULL, NULL}, - {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(ext_address64.granularity), + {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(ext_address64.address.granularity), "Granularity", NULL}, - {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(ext_address64.minimum), + {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(ext_address64.address.minimum), "Address Minimum", NULL}, - {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(ext_address64.maximum), + {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(ext_address64.address.maximum), "Address Maximum", NULL}, - {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(ext_address64.translation_offset), + {ACPI_RSD_UINT64, + ACPI_RSD_OFFSET(ext_address64.address.translation_offset), "Translation Offset", NULL}, - {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(ext_address64.address_length), + {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(ext_address64.address.address_length), "Address Length", NULL}, {ACPI_RSD_UINT64, ACPI_RSD_OFFSET(ext_address64.type_specific), "Type-Specific Attribute", NULL} diff --git a/drivers/acpi/acpica/rsinfo.c b/drivers/acpi/acpica/rsinfo.c index 9d3f8a9..edecfc6 100644 --- a/drivers/acpi/acpica/rsinfo.c +++ b/drivers/acpi/acpica/rsinfo.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsio.c b/drivers/acpi/acpica/rsio.c index 19d6487..5adba01 100644 --- a/drivers/acpi/acpica/rsio.c +++ b/drivers/acpi/acpica/rsio.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsirq.c b/drivers/acpi/acpica/rsirq.c index 3461f7d..07cfa70 100644 --- a/drivers/acpi/acpica/rsirq.c +++ b/drivers/acpi/acpica/rsirq.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rslist.c b/drivers/acpi/acpica/rslist.c index 7729129..50d5be2 100644 --- a/drivers/acpi/acpica/rslist.c +++ b/drivers/acpi/acpica/rslist.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsmemory.c b/drivers/acpi/acpica/rsmemory.c index eab4483..c6b8086 100644 --- a/drivers/acpi/acpica/rsmemory.c +++ b/drivers/acpi/acpica/rsmemory.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsmisc.c b/drivers/acpi/acpica/rsmisc.c index 41eea4b..1fe49d2 100644 --- a/drivers/acpi/acpica/rsmisc.c +++ b/drivers/acpi/acpica/rsmisc.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsserial.c b/drivers/acpi/acpica/rsserial.c index 9e84072..4c8c6fe 100644 --- a/drivers/acpi/acpica/rsserial.c +++ b/drivers/acpi/acpica/rsserial.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsutils.c b/drivers/acpi/acpica/rsutils.c index 897a5ce..ece3cd6 100644 --- a/drivers/acpi/acpica/rsutils.c +++ b/drivers/acpi/acpica/rsutils.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/rsxface.c b/drivers/acpi/acpica/rsxface.c index 877ab92..8e6276df 100644 --- a/drivers/acpi/acpica/rsxface.c +++ b/drivers/acpi/acpica/rsxface.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -60,11 +60,11 @@ ACPI_MODULE_NAME("rsxface") ACPI_COPY_FIELD(out, in, min_address_fixed); \ ACPI_COPY_FIELD(out, in, max_address_fixed); \ ACPI_COPY_FIELD(out, in, info); \ - ACPI_COPY_FIELD(out, in, granularity); \ - ACPI_COPY_FIELD(out, in, minimum); \ - ACPI_COPY_FIELD(out, in, maximum); \ - ACPI_COPY_FIELD(out, in, translation_offset); \ - ACPI_COPY_FIELD(out, in, address_length); \ + ACPI_COPY_FIELD(out, in, address.granularity); \ + ACPI_COPY_FIELD(out, in, address.minimum); \ + ACPI_COPY_FIELD(out, in, address.maximum); \ + ACPI_COPY_FIELD(out, in, address.translation_offset); \ + ACPI_COPY_FIELD(out, in, address.address_length); \ ACPI_COPY_FIELD(out, in, resource_source); /* Local prototypes */ static acpi_status diff --git a/drivers/acpi/acpica/tbdata.c b/drivers/acpi/acpica/tbdata.c index f499c10..6a14495 100644 --- a/drivers/acpi/acpica/tbdata.c +++ b/drivers/acpi/acpica/tbdata.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c index 41519a9..7d24860 100644 --- a/drivers/acpi/acpica/tbfadt.c +++ b/drivers/acpi/acpica/tbfadt.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/tbfind.c b/drivers/acpi/acpica/tbfind.c index cb94770..0b879fc 100644 --- a/drivers/acpi/acpica/tbfind.c +++ b/drivers/acpi/acpica/tbfind.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/tbinstal.c b/drivers/acpi/acpica/tbinstal.c index 755b90c..9bad45e 100644 --- a/drivers/acpi/acpica/tbinstal.c +++ b/drivers/acpi/acpica/tbinstal.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/tbprint.c b/drivers/acpi/acpica/tbprint.c index df3bb20..ef16c06 100644 --- a/drivers/acpi/acpica/tbprint.c +++ b/drivers/acpi/acpica/tbprint.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c index 6b1ca99..6559a58 100644 --- a/drivers/acpi/acpica/tbutils.c +++ b/drivers/acpi/acpica/tbutils.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/tbxface.c b/drivers/acpi/acpica/tbxface.c index 6482b0d..60e94f8 100644 --- a/drivers/acpi/acpica/tbxface.c +++ b/drivers/acpi/acpica/tbxface.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -265,45 +265,6 @@ ACPI_EXPORT_SYMBOL(acpi_get_table_header) /******************************************************************************* * - * FUNCTION: acpi_unload_table_id - * - * PARAMETERS: id - Owner ID of the table to be removed. - * - * RETURN: Status - * - * DESCRIPTION: This routine is used to force the unload of a table (by id) - * - ******************************************************************************/ -acpi_status acpi_unload_table_id(acpi_owner_id id) -{ - int i; - acpi_status status = AE_NOT_EXIST; - - ACPI_FUNCTION_TRACE(acpi_unload_table_id); - - /* Find table in the global table list */ - for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) { - if (id != acpi_gbl_root_table_list.tables[i].owner_id) { - continue; - } - /* - * Delete all namespace objects owned by this table. Note that these - * objects can appear anywhere in the namespace by virtue of the AML - * "Scope" operator. Thus, we need to track ownership by an ID, not - * simply a position within the hierarchy - */ - acpi_tb_delete_namespace_by_owner(i); - status = acpi_tb_release_owner_id(i); - acpi_tb_set_table_loaded_flag(i, FALSE); - break; - } - return_ACPI_STATUS(status); -} - -ACPI_EXPORT_SYMBOL(acpi_unload_table_id) - -/******************************************************************************* - * * FUNCTION: acpi_get_table_with_size * * PARAMETERS: signature - ACPI signature of needed table diff --git a/drivers/acpi/acpica/tbxfload.c b/drivers/acpi/acpica/tbxfload.c index ab5308b..aadb300 100644 --- a/drivers/acpi/acpica/tbxfload.c +++ b/drivers/acpi/acpica/tbxfload.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/tbxfroot.c b/drivers/acpi/acpica/tbxfroot.c index 43a54af..eac52cf 100644 --- a/drivers/acpi/acpica/tbxfroot.c +++ b/drivers/acpi/acpica/tbxfroot.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utaddress.c b/drivers/acpi/acpica/utaddress.c index a1acec9d..1279f50 100644 --- a/drivers/acpi/acpica/utaddress.c +++ b/drivers/acpi/acpica/utaddress.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utalloc.c b/drivers/acpi/acpica/utalloc.c index efac83c..61d8f6d 100644 --- a/drivers/acpi/acpica/utalloc.c +++ b/drivers/acpi/acpica/utalloc.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utbuffer.c b/drivers/acpi/acpica/utbuffer.c index 038ea88..242bd07 100644 --- a/drivers/acpi/acpica/utbuffer.c +++ b/drivers/acpi/acpica/utbuffer.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utcache.c b/drivers/acpi/acpica/utcache.c index 78fde0a..eacc5ee 100644 --- a/drivers/acpi/acpica/utcache.c +++ b/drivers/acpi/acpica/utcache.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utcopy.c b/drivers/acpi/acpica/utcopy.c index ff601c0..c37ec50 100644 --- a/drivers/acpi/acpica/utcopy.c +++ b/drivers/acpi/acpica/utcopy.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utdebug.c b/drivers/acpi/acpica/utdebug.c index e516254..57078e3 100644 --- a/drivers/acpi/acpica/utdebug.c +++ b/drivers/acpi/acpica/utdebug.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utdecode.c b/drivers/acpi/acpica/utdecode.c index 40e923e..988e23b 100644 --- a/drivers/acpi/acpica/utdecode.c +++ b/drivers/acpi/acpica/utdecode.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utdelete.c b/drivers/acpi/acpica/utdelete.c index a3516de..71fce38 100644 --- a/drivers/acpi/acpica/utdelete.c +++ b/drivers/acpi/acpica/utdelete.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/uterror.c b/drivers/acpi/acpica/uterror.c index 8e544d4..9ef80f2 100644 --- a/drivers/acpi/acpica/uterror.c +++ b/drivers/acpi/acpica/uterror.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/uteval.c b/drivers/acpi/acpica/uteval.c index 8fed148..6c738fa 100644 --- a/drivers/acpi/acpica/uteval.c +++ b/drivers/acpi/acpica/uteval.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utexcep.c b/drivers/acpi/acpica/utexcep.c index 0403dca..743a0ae 100644 --- a/drivers/acpi/acpica/utexcep.c +++ b/drivers/acpi/acpica/utexcep.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utfileio.c b/drivers/acpi/acpica/utfileio.c index 4e263a8..7e1168b 100644 --- a/drivers/acpi/acpica/utfileio.c +++ b/drivers/acpi/acpica/utfileio.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utglobal.c b/drivers/acpi/acpica/utglobal.c index 77ceac7..5e8df91 100644 --- a/drivers/acpi/acpica/utglobal.c +++ b/drivers/acpi/acpica/utglobal.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/uthex.c b/drivers/acpi/acpica/uthex.c index 9afa944..aa44827 100644 --- a/drivers/acpi/acpica/uthex.c +++ b/drivers/acpi/acpica/uthex.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utids.c b/drivers/acpi/acpica/utids.c index 4b12880..27431cf 100644 --- a/drivers/acpi/acpica/utids.c +++ b/drivers/acpi/acpica/utids.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utinit.c b/drivers/acpi/acpica/utinit.c index 77120ec..e402e07 100644 --- a/drivers/acpi/acpica/utinit.c +++ b/drivers/acpi/acpica/utinit.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utlock.c b/drivers/acpi/acpica/utlock.c index dc6e965..089f78b 100644 --- a/drivers/acpi/acpica/utlock.c +++ b/drivers/acpi/acpica/utlock.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utmath.c b/drivers/acpi/acpica/utmath.c index d44dee6..f9ff100 100644 --- a/drivers/acpi/acpica/utmath.c +++ b/drivers/acpi/acpica/utmath.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utmisc.c b/drivers/acpi/acpica/utmisc.c index 2e2bb14..56bbacd5 100644 --- a/drivers/acpi/acpica/utmisc.c +++ b/drivers/acpi/acpica/utmisc.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utmutex.c b/drivers/acpi/acpica/utmutex.c index 82717ff..37b8b58 100644 --- a/drivers/acpi/acpica/utmutex.c +++ b/drivers/acpi/acpica/utmutex.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utobject.c b/drivers/acpi/acpica/utobject.c index dfa9009b..7d83efe 100644 --- a/drivers/acpi/acpica/utobject.c +++ b/drivers/acpi/acpica/utobject.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utosi.c b/drivers/acpi/acpica/utosi.c index 685766f..574cd31 100644 --- a/drivers/acpi/acpica/utosi.c +++ b/drivers/acpi/acpica/utosi.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utownerid.c b/drivers/acpi/acpica/utownerid.c index 36bec57..2959217 100644 --- a/drivers/acpi/acpica/utownerid.c +++ b/drivers/acpi/acpica/utownerid.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utpredef.c b/drivers/acpi/acpica/utpredef.c index db30caf..29e4499 100644 --- a/drivers/acpi/acpica/utpredef.c +++ b/drivers/acpi/acpica/utpredef.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utprint.c b/drivers/acpi/acpica/utprint.c index 0ce3f5a..82ca914 100644 --- a/drivers/acpi/acpica/utprint.c +++ b/drivers/acpi/acpica/utprint.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utresrc.c b/drivers/acpi/acpica/utresrc.c index bc1ff82..b3505db 100644 --- a/drivers/acpi/acpica/utresrc.c +++ b/drivers/acpi/acpica/utresrc.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utstate.c b/drivers/acpi/acpica/utstate.c index 1cc97a7..8274cc1 100644 --- a/drivers/acpi/acpica/utstate.c +++ b/drivers/acpi/acpica/utstate.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utstring.c b/drivers/acpi/acpica/utstring.c index 6dc54b3..83b6c52 100644 --- a/drivers/acpi/acpica/utstring.c +++ b/drivers/acpi/acpica/utstring.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/uttrack.c b/drivers/acpi/acpica/uttrack.c index 7d0ee96..130dd9f 100644 --- a/drivers/acpi/acpica/uttrack.c +++ b/drivers/acpi/acpica/uttrack.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utuuid.c b/drivers/acpi/acpica/utuuid.c index 4dc3313..c6149a2 100644 --- a/drivers/acpi/acpica/utuuid.c +++ b/drivers/acpi/acpica/utuuid.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c index 49c873c..0929187 100644 --- a/drivers/acpi/acpica/utxface.c +++ b/drivers/acpi/acpica/utxface.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utxferror.c b/drivers/acpi/acpica/utxferror.c index 88ef77f..306e785 100644 --- a/drivers/acpi/acpica/utxferror.c +++ b/drivers/acpi/acpica/utxferror.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utxfinit.c b/drivers/acpi/acpica/utxfinit.c index b1fd688..083a768 100644 --- a/drivers/acpi/acpica/utxfinit.c +++ b/drivers/acpi/acpica/utxfinit.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/acpica/utxfmutex.c b/drivers/acpi/acpica/utxfmutex.c index 2a0f9e0..f2606af 100644 --- a/drivers/acpi/acpica/utxfmutex.c +++ b/drivers/acpi/acpica/utxfmutex.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2014, Intel Corp. + * Copyright (C) 2000 - 2015, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c index c0d44d3..735db11 100644 --- a/drivers/acpi/device_pm.c +++ b/drivers/acpi/device_pm.c @@ -1027,7 +1027,6 @@ EXPORT_SYMBOL_GPL(acpi_subsys_freeze); static struct dev_pm_domain acpi_general_pm_domain = { .ops = { -#ifdef CONFIG_PM .runtime_suspend = acpi_subsys_runtime_suspend, .runtime_resume = acpi_subsys_runtime_resume, #ifdef CONFIG_PM_SLEEP @@ -1041,7 +1040,6 @@ static struct dev_pm_domain acpi_general_pm_domain = { .poweroff_late = acpi_subsys_suspend_late, .restore_early = acpi_subsys_resume_early, #endif -#endif }, }; diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 1b5853f..14d0c89 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -1,8 +1,8 @@ /* - * ec.c - ACPI Embedded Controller Driver (v2.2) + * ec.c - ACPI Embedded Controller Driver (v3) * - * Copyright (C) 2001-2014 Intel Corporation - * Author: 2014 Lv Zheng <lv.zheng@intel.com> + * Copyright (C) 2001-2015 Intel Corporation + * Author: 2014, 2015 Lv Zheng <lv.zheng@intel.com> * 2006, 2007 Alexey Starikovskiy <alexey.y.starikovskiy@intel.com> * 2006 Denis Sadykov <denis.m.sadykov@intel.com> * 2004 Luming Yu <luming.yu@intel.com> @@ -31,6 +31,7 @@ /* Uncomment next line to get verbose printout */ /* #define DEBUG */ +#define DEBUG_REF 0 #define pr_fmt(fmt) "ACPI : EC: " fmt #include <linux/kernel.h> @@ -71,20 +72,32 @@ enum ec_command { #define ACPI_EC_DELAY 500 /* Wait 500ms max. during EC ops */ #define ACPI_EC_UDELAY_GLK 1000 /* Wait 1ms max. to get global lock */ #define ACPI_EC_MSI_UDELAY 550 /* Wait 550us for MSI EC */ +#define ACPI_EC_UDELAY_POLL 1000 /* Wait 1ms for EC transaction polling */ #define ACPI_EC_CLEAR_MAX 100 /* Maximum number of events to query * when trying to clear the EC */ enum { - EC_FLAGS_QUERY_PENDING, /* Query is pending */ - EC_FLAGS_GPE_STORM, /* GPE storm detected */ + EC_FLAGS_EVENT_ENABLED, /* Event is enabled */ + EC_FLAGS_EVENT_PENDING, /* Event is pending */ + EC_FLAGS_EVENT_DETECTED, /* Event is detected */ EC_FLAGS_HANDLERS_INSTALLED, /* Handlers for GPE and * OpReg are installed */ - EC_FLAGS_BLOCKED, /* Transactions are blocked */ + EC_FLAGS_STARTED, /* Driver is started */ + EC_FLAGS_STOPPED, /* Driver is stopped */ + EC_FLAGS_COMMAND_STORM, /* GPE storms occurred to the + * current command processing */ }; #define ACPI_EC_COMMAND_POLL 0x01 /* Available for command byte */ #define ACPI_EC_COMMAND_COMPLETE 0x02 /* Completed last byte */ +#define ec_debug_ref(ec, fmt, ...) \ + do { \ + if (DEBUG_REF) \ + pr_debug("%lu: " fmt, ec->reference_count, \ + ## __VA_ARGS__); \ + } while (0) + /* ec.c is compiled in acpi namespace so this shows up as acpi.ec_delay param */ static unsigned int ec_delay __read_mostly = ACPI_EC_DELAY; module_param(ec_delay, uint, 0644); @@ -105,6 +118,7 @@ struct acpi_ec_query_handler { acpi_handle handle; void *data; u8 query_bit; + struct kref kref; }; struct transaction { @@ -117,8 +131,12 @@ struct transaction { u8 wlen; u8 rlen; u8 flags; + unsigned long timestamp; }; +static int acpi_ec_query(struct acpi_ec *ec, u8 *data); +static void advance_transaction(struct acpi_ec *ec); + struct acpi_ec *boot_ec, *first_ec; EXPORT_SYMBOL(first_ec); @@ -129,7 +147,28 @@ static int EC_FLAGS_CLEAR_ON_RESUME; /* Needs acpi_ec_clear() on boot/resume */ static int EC_FLAGS_QUERY_HANDSHAKE; /* Needs QR_EC issued when SCI_EVT set */ /* -------------------------------------------------------------------------- - * Transaction Management + * Device Flags + * -------------------------------------------------------------------------- */ + +static bool acpi_ec_started(struct acpi_ec *ec) +{ + return test_bit(EC_FLAGS_STARTED, &ec->flags) && + !test_bit(EC_FLAGS_STOPPED, &ec->flags); +} + +static bool acpi_ec_flushed(struct acpi_ec *ec) +{ + return ec->reference_count == 1; +} + +static bool acpi_ec_has_pending_event(struct acpi_ec *ec) +{ + return test_bit(EC_FLAGS_EVENT_DETECTED, &ec->flags) || + test_bit(EC_FLAGS_EVENT_PENDING, &ec->flags); +} + +/* -------------------------------------------------------------------------- + * EC Registers * -------------------------------------------------------------------------- */ static inline u8 acpi_ec_read_status(struct acpi_ec *ec) @@ -151,6 +190,7 @@ static inline u8 acpi_ec_read_data(struct acpi_ec *ec) { u8 x = inb(ec->data_addr); + ec->curr->timestamp = jiffies; pr_debug("EC_DATA(R) = 0x%2.2x\n", x); return x; } @@ -159,12 +199,14 @@ static inline void acpi_ec_write_cmd(struct acpi_ec *ec, u8 command) { pr_debug("EC_SC(W) = 0x%2.2x\n", command); outb(command, ec->command_addr); + ec->curr->timestamp = jiffies; } static inline void acpi_ec_write_data(struct acpi_ec *ec, u8 data) { pr_debug("EC_DATA(W) = 0x%2.2x\n", data); outb(data, ec->data_addr); + ec->curr->timestamp = jiffies; } #ifdef DEBUG @@ -188,6 +230,203 @@ static const char *acpi_ec_cmd_string(u8 cmd) #define acpi_ec_cmd_string(cmd) "UNDEF" #endif +/* -------------------------------------------------------------------------- + * GPE Registers + * -------------------------------------------------------------------------- */ + +static inline bool acpi_ec_is_gpe_raised(struct acpi_ec *ec) +{ + acpi_event_status gpe_status = 0; + + (void)acpi_get_gpe_status(NULL, ec->gpe, &gpe_status); + return (gpe_status & ACPI_EVENT_FLAG_SET) ? true : false; +} + +static inline void acpi_ec_enable_gpe(struct acpi_ec *ec, bool open) +{ + if (open) + acpi_enable_gpe(NULL, ec->gpe); + else { + BUG_ON(ec->reference_count < 1); + acpi_set_gpe(NULL, ec->gpe, ACPI_GPE_ENABLE); + } + if (acpi_ec_is_gpe_raised(ec)) { + /* + * On some platforms, EN=1 writes cannot trigger GPE. So + * software need to manually trigger a pseudo GPE event on + * EN=1 writes. + */ + pr_debug("***** Polling quirk *****\n"); + advance_transaction(ec); + } +} + +static inline void acpi_ec_disable_gpe(struct acpi_ec *ec, bool close) +{ + if (close) + acpi_disable_gpe(NULL, ec->gpe); + else { + BUG_ON(ec->reference_count < 1); + acpi_set_gpe(NULL, ec->gpe, ACPI_GPE_DISABLE); + } +} + +static inline void acpi_ec_clear_gpe(struct acpi_ec *ec) +{ + /* + * GPE STS is a W1C register, which means: + * 1. Software can clear it without worrying about clearing other + * GPEs' STS bits when the hardware sets them in parallel. + * 2. As long as software can ensure only clearing it when it is + * set, hardware won't set it in parallel. + * So software can clear GPE in any contexts. + * Warning: do not move the check into advance_transaction() as the + * EC commands will be sent without GPE raised. + */ + if (!acpi_ec_is_gpe_raised(ec)) + return; + acpi_clear_gpe(NULL, ec->gpe); +} + +/* -------------------------------------------------------------------------- + * Transaction Management + * -------------------------------------------------------------------------- */ + +static void acpi_ec_submit_request(struct acpi_ec *ec) +{ + ec->reference_count++; + if (ec->reference_count == 1) + acpi_ec_enable_gpe(ec, true); +} + +static void acpi_ec_complete_request(struct acpi_ec *ec) +{ + bool flushed = false; + + ec->reference_count--; + if (ec->reference_count == 0) + acpi_ec_disable_gpe(ec, true); + flushed = acpi_ec_flushed(ec); + if (flushed) + wake_up(&ec->wait); +} + +static void acpi_ec_set_storm(struct acpi_ec *ec, u8 flag) +{ + if (!test_bit(flag, &ec->flags)) { + acpi_ec_disable_gpe(ec, false); + pr_debug("+++++ Polling enabled +++++\n"); + set_bit(flag, &ec->flags); + } +} + +static void acpi_ec_clear_storm(struct acpi_ec *ec, u8 flag) +{ + if (test_bit(flag, &ec->flags)) { + clear_bit(flag, &ec->flags); + acpi_ec_enable_gpe(ec, false); + pr_debug("+++++ Polling disabled +++++\n"); + } +} + +/* + * acpi_ec_submit_flushable_request() - Increase the reference count unless + * the flush operation is not in + * progress + * @ec: the EC device + * @allow_event: whether event should be handled + * + * This function must be used before taking a new action that should hold + * the reference count. If this function returns false, then the action + * must be discarded or it will prevent the flush operation from being + * completed. + * + * During flushing, QR_EC command need to pass this check when there is a + * pending event, so that the reference count held for the pending event + * can be decreased by the completion of the QR_EC command. + */ +static bool acpi_ec_submit_flushable_request(struct acpi_ec *ec, + bool allow_event) +{ + if (!acpi_ec_started(ec)) { + if (!allow_event || !acpi_ec_has_pending_event(ec)) + return false; + } + acpi_ec_submit_request(ec); + return true; +} + +static void acpi_ec_submit_event(struct acpi_ec *ec) +{ + if (!test_bit(EC_FLAGS_EVENT_DETECTED, &ec->flags) || + !test_bit(EC_FLAGS_EVENT_ENABLED, &ec->flags)) + return; + /* Hold reference for pending event */ + if (!acpi_ec_submit_flushable_request(ec, true)) + return; + ec_debug_ref(ec, "Increase event\n"); + if (!test_and_set_bit(EC_FLAGS_EVENT_PENDING, &ec->flags)) { + pr_debug("***** Event query started *****\n"); + schedule_work(&ec->work); + return; + } + acpi_ec_complete_request(ec); + ec_debug_ref(ec, "Decrease event\n"); +} + +static void acpi_ec_complete_event(struct acpi_ec *ec) +{ + if (ec->curr->command == ACPI_EC_COMMAND_QUERY) { + clear_bit(EC_FLAGS_EVENT_PENDING, &ec->flags); + pr_debug("***** Event query stopped *****\n"); + /* Unhold reference for pending event */ + acpi_ec_complete_request(ec); + ec_debug_ref(ec, "Decrease event\n"); + /* Check if there is another SCI_EVT detected */ + acpi_ec_submit_event(ec); + } +} + +static void acpi_ec_submit_detection(struct acpi_ec *ec) +{ + /* Hold reference for query submission */ + if (!acpi_ec_submit_flushable_request(ec, false)) + return; + ec_debug_ref(ec, "Increase query\n"); + if (!test_and_set_bit(EC_FLAGS_EVENT_DETECTED, &ec->flags)) { + pr_debug("***** Event detection blocked *****\n"); + acpi_ec_submit_event(ec); + return; + } + acpi_ec_complete_request(ec); + ec_debug_ref(ec, "Decrease query\n"); +} + +static void acpi_ec_complete_detection(struct acpi_ec *ec) +{ + if (ec->curr->command == ACPI_EC_COMMAND_QUERY) { + clear_bit(EC_FLAGS_EVENT_DETECTED, &ec->flags); + pr_debug("***** Event detetion unblocked *****\n"); + /* Unhold reference for query submission */ + acpi_ec_complete_request(ec); + ec_debug_ref(ec, "Decrease query\n"); + } +} + +static void acpi_ec_enable_event(struct acpi_ec *ec) +{ + unsigned long flags; + + spin_lock_irqsave(&ec->lock, flags); + set_bit(EC_FLAGS_EVENT_ENABLED, &ec->flags); + /* + * An event may be pending even with SCI_EVT=0, so QR_EC should + * always be issued right after started. + */ + acpi_ec_submit_detection(ec); + spin_unlock_irqrestore(&ec->lock, flags); +} + static int ec_transaction_completed(struct acpi_ec *ec) { unsigned long flags; @@ -200,7 +439,7 @@ static int ec_transaction_completed(struct acpi_ec *ec) return ret; } -static bool advance_transaction(struct acpi_ec *ec) +static void advance_transaction(struct acpi_ec *ec) { struct transaction *t; u8 status; @@ -208,6 +447,12 @@ static bool advance_transaction(struct acpi_ec *ec) pr_debug("===== %s (%d) =====\n", in_interrupt() ? "IRQ" : "TASK", smp_processor_id()); + /* + * By always clearing STS before handling all indications, we can + * ensure a hardware STS 0->1 change after this clearing can always + * trigger a GPE interrupt. + */ + acpi_ec_clear_gpe(ec); status = acpi_ec_read_status(ec); t = ec->curr; if (!t) @@ -223,6 +468,7 @@ static bool advance_transaction(struct acpi_ec *ec) t->rdata[t->ri++] = acpi_ec_read_data(ec); if (t->rlen == t->ri) { t->flags |= ACPI_EC_COMMAND_COMPLETE; + acpi_ec_complete_event(ec); if (t->command == ACPI_EC_COMMAND_QUERY) pr_debug("***** Command(%s) hardware completion *****\n", acpi_ec_cmd_string(t->command)); @@ -233,25 +479,29 @@ static bool advance_transaction(struct acpi_ec *ec) } else if (t->wlen == t->wi && (status & ACPI_EC_FLAG_IBF) == 0) { t->flags |= ACPI_EC_COMMAND_COMPLETE; + acpi_ec_complete_event(ec); wakeup = true; } - return wakeup; + goto out; } else { if (EC_FLAGS_QUERY_HANDSHAKE && !(status & ACPI_EC_FLAG_SCI) && (t->command == ACPI_EC_COMMAND_QUERY)) { t->flags |= ACPI_EC_COMMAND_POLL; + acpi_ec_complete_detection(ec); t->rdata[t->ri++] = 0x00; t->flags |= ACPI_EC_COMMAND_COMPLETE; + acpi_ec_complete_event(ec); pr_debug("***** Command(%s) software completion *****\n", acpi_ec_cmd_string(t->command)); wakeup = true; } else if ((status & ACPI_EC_FLAG_IBF) == 0) { acpi_ec_write_cmd(ec, t->command); t->flags |= ACPI_EC_COMMAND_POLL; + acpi_ec_complete_detection(ec); } else goto err; - return wakeup; + goto out; } err: /* @@ -259,28 +509,27 @@ err: * otherwise will take a not handled IRQ as a false one. */ if (!(status & ACPI_EC_FLAG_SCI)) { - if (in_interrupt() && t) - ++t->irq_count; + if (in_interrupt() && t) { + if (t->irq_count < ec_storm_threshold) + ++t->irq_count; + /* Allow triggering on 0 threshold */ + if (t->irq_count == ec_storm_threshold) + acpi_ec_set_storm(ec, EC_FLAGS_COMMAND_STORM); + } } - return wakeup; +out: + if (status & ACPI_EC_FLAG_SCI) + acpi_ec_submit_detection(ec); + if (wakeup && in_interrupt()) + wake_up(&ec->wait); } static void start_transaction(struct acpi_ec *ec) { ec->curr->irq_count = ec->curr->wi = ec->curr->ri = 0; ec->curr->flags = 0; - (void)advance_transaction(ec); -} - -static int acpi_ec_sync_query(struct acpi_ec *ec, u8 *data); - -static int ec_check_sci_sync(struct acpi_ec *ec, u8 state) -{ - if (state & ACPI_EC_FLAG_SCI) { - if (!test_and_set_bit(EC_FLAGS_QUERY_PENDING, &ec->flags)) - return acpi_ec_sync_query(ec, NULL); - } - return 0; + ec->curr->timestamp = jiffies; + advance_transaction(ec); } static int ec_poll(struct acpi_ec *ec) @@ -291,20 +540,25 @@ static int ec_poll(struct acpi_ec *ec) while (repeat--) { unsigned long delay = jiffies + msecs_to_jiffies(ec_delay); + unsigned long usecs = ACPI_EC_UDELAY_POLL; do { /* don't sleep with disabled interrupts */ if (EC_FLAGS_MSI || irqs_disabled()) { - udelay(ACPI_EC_MSI_UDELAY); + usecs = ACPI_EC_MSI_UDELAY; + udelay(usecs); if (ec_transaction_completed(ec)) return 0; } else { if (wait_event_timeout(ec->wait, ec_transaction_completed(ec), - msecs_to_jiffies(1))) + usecs_to_jiffies(usecs))) return 0; } spin_lock_irqsave(&ec->lock, flags); - (void)advance_transaction(ec); + if (time_after(jiffies, + ec->curr->timestamp + + usecs_to_jiffies(usecs))) + advance_transaction(ec); spin_unlock_irqrestore(&ec->lock, flags); } while (time_before(jiffies, delay)); pr_debug("controller reset, restart transaction\n"); @@ -325,21 +579,29 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, udelay(ACPI_EC_MSI_UDELAY); /* start transaction */ spin_lock_irqsave(&ec->lock, tmp); + /* Enable GPE for command processing (IBF=0/OBF=1) */ + if (!acpi_ec_submit_flushable_request(ec, true)) { + ret = -EINVAL; + goto unlock; + } + ec_debug_ref(ec, "Increase command\n"); /* following two actions should be kept atomic */ ec->curr = t; pr_debug("***** Command(%s) started *****\n", acpi_ec_cmd_string(t->command)); start_transaction(ec); - if (ec->curr->command == ACPI_EC_COMMAND_QUERY) { - clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags); - pr_debug("***** Event stopped *****\n"); - } spin_unlock_irqrestore(&ec->lock, tmp); ret = ec_poll(ec); spin_lock_irqsave(&ec->lock, tmp); + if (t->irq_count == ec_storm_threshold) + acpi_ec_clear_storm(ec, EC_FLAGS_COMMAND_STORM); pr_debug("***** Command(%s) stopped *****\n", acpi_ec_cmd_string(t->command)); ec->curr = NULL; + /* Disable GPE for command processing (IBF=0/OBF=1) */ + acpi_ec_complete_request(ec); + ec_debug_ref(ec, "Decrease command\n"); +unlock: spin_unlock_irqrestore(&ec->lock, tmp); return ret; } @@ -354,10 +616,6 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t) if (t->rdata) memset(t->rdata, 0, t->rlen); mutex_lock(&ec->mutex); - if (test_bit(EC_FLAGS_BLOCKED, &ec->flags)) { - status = -EINVAL; - goto unlock; - } if (ec->global_lock) { status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk); if (ACPI_FAILURE(status)) { @@ -365,26 +623,11 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t) goto unlock; } } - /* disable GPE during transaction if storm is detected */ - if (test_bit(EC_FLAGS_GPE_STORM, &ec->flags)) { - /* It has to be disabled, so that it doesn't trigger. */ - acpi_disable_gpe(NULL, ec->gpe); - } status = acpi_ec_transaction_unlocked(ec, t); - /* check if we received SCI during transaction */ - ec_check_sci_sync(ec, acpi_ec_read_status(ec)); - if (test_bit(EC_FLAGS_GPE_STORM, &ec->flags)) { + if (test_bit(EC_FLAGS_COMMAND_STORM, &ec->flags)) msleep(1); - /* It is safe to enable the GPE outside of the transaction. */ - acpi_enable_gpe(NULL, ec->gpe); - } else if (t->irq_count > ec_storm_threshold) { - pr_info("GPE storm detected(%d GPEs), " - "transactions will use polling mode\n", - t->irq_count); - set_bit(EC_FLAGS_GPE_STORM, &ec->flags); - } if (ec->global_lock) acpi_release_global_lock(glk); unlock: @@ -500,7 +743,7 @@ static void acpi_ec_clear(struct acpi_ec *ec) u8 value = 0; for (i = 0; i < ACPI_EC_CLEAR_MAX; i++) { - status = acpi_ec_sync_query(ec, &value); + status = acpi_ec_query(ec, &value); if (status || !value) break; } @@ -511,6 +754,57 @@ static void acpi_ec_clear(struct acpi_ec *ec) pr_info("%d stale EC events cleared\n", i); } +static void acpi_ec_start(struct acpi_ec *ec, bool resuming) +{ + unsigned long flags; + + spin_lock_irqsave(&ec->lock, flags); + if (!test_and_set_bit(EC_FLAGS_STARTED, &ec->flags)) { + pr_debug("+++++ Starting EC +++++\n"); + /* Enable GPE for event processing (SCI_EVT=1) */ + if (!resuming) { + acpi_ec_submit_request(ec); + ec_debug_ref(ec, "Increase driver\n"); + } + pr_info("+++++ EC started +++++\n"); + } + spin_unlock_irqrestore(&ec->lock, flags); +} + +static bool acpi_ec_stopped(struct acpi_ec *ec) +{ + unsigned long flags; + bool flushed; + + spin_lock_irqsave(&ec->lock, flags); + flushed = acpi_ec_flushed(ec); + spin_unlock_irqrestore(&ec->lock, flags); + return flushed; +} + +static void acpi_ec_stop(struct acpi_ec *ec, bool suspending) +{ + unsigned long flags; + + spin_lock_irqsave(&ec->lock, flags); + if (acpi_ec_started(ec)) { + pr_debug("+++++ Stopping EC +++++\n"); + set_bit(EC_FLAGS_STOPPED, &ec->flags); + spin_unlock_irqrestore(&ec->lock, flags); + wait_event(ec->wait, acpi_ec_stopped(ec)); + spin_lock_irqsave(&ec->lock, flags); + /* Disable GPE for event processing (SCI_EVT=1) */ + if (!suspending) { + acpi_ec_complete_request(ec); + ec_debug_ref(ec, "Decrease driver\n"); + } + clear_bit(EC_FLAGS_STARTED, &ec->flags); + clear_bit(EC_FLAGS_STOPPED, &ec->flags); + pr_info("+++++ EC stopped +++++\n"); + } + spin_unlock_irqrestore(&ec->lock, flags); +} + void acpi_ec_block_transactions(void) { struct acpi_ec *ec = first_ec; @@ -520,7 +814,7 @@ void acpi_ec_block_transactions(void) mutex_lock(&ec->mutex); /* Prevent transactions from being carried out */ - set_bit(EC_FLAGS_BLOCKED, &ec->flags); + acpi_ec_stop(ec, true); mutex_unlock(&ec->mutex); } @@ -531,14 +825,11 @@ void acpi_ec_unblock_transactions(void) if (!ec) return; - mutex_lock(&ec->mutex); /* Allow transactions to be carried out again */ - clear_bit(EC_FLAGS_BLOCKED, &ec->flags); + acpi_ec_start(ec, true); if (EC_FLAGS_CLEAR_ON_RESUME) acpi_ec_clear(ec); - - mutex_unlock(&ec->mutex); } void acpi_ec_unblock_transactions_early(void) @@ -548,36 +839,33 @@ void acpi_ec_unblock_transactions_early(void) * atomic context during wakeup, so we don't need to acquire the mutex). */ if (first_ec) - clear_bit(EC_FLAGS_BLOCKED, &first_ec->flags); + acpi_ec_start(first_ec, true); } -static int acpi_ec_query_unlocked(struct acpi_ec *ec, u8 *data) +/* -------------------------------------------------------------------------- + Event Management + -------------------------------------------------------------------------- */ +static struct acpi_ec_query_handler * +acpi_ec_get_query_handler(struct acpi_ec_query_handler *handler) { - int result; - u8 d; - struct transaction t = {.command = ACPI_EC_COMMAND_QUERY, - .wdata = NULL, .rdata = &d, - .wlen = 0, .rlen = 1}; + if (handler) + kref_get(&handler->kref); + return handler; +} - if (!ec || !data) - return -EINVAL; - /* - * Query the EC to find out which _Qxx method we need to evaluate. - * Note that successful completion of the query causes the ACPI_EC_SCI - * bit to be cleared (and thus clearing the interrupt source). - */ - result = acpi_ec_transaction_unlocked(ec, &t); - if (result) - return result; - if (!d) - return -ENODATA; - *data = d; - return 0; +static void acpi_ec_query_handler_release(struct kref *kref) +{ + struct acpi_ec_query_handler *handler = + container_of(kref, struct acpi_ec_query_handler, kref); + + kfree(handler); +} + +static void acpi_ec_put_query_handler(struct acpi_ec_query_handler *handler) +{ + kref_put(&handler->kref, acpi_ec_query_handler_release); } -/* -------------------------------------------------------------------------- - Event Management - -------------------------------------------------------------------------- */ int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit, acpi_handle handle, acpi_ec_query_func func, void *data) @@ -593,6 +881,7 @@ int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit, handler->func = func; handler->data = data; mutex_lock(&ec->mutex); + kref_init(&handler->kref); list_add(&handler->node, &ec->list); mutex_unlock(&ec->mutex); return 0; @@ -602,15 +891,18 @@ EXPORT_SYMBOL_GPL(acpi_ec_add_query_handler); void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit) { struct acpi_ec_query_handler *handler, *tmp; + LIST_HEAD(free_list); mutex_lock(&ec->mutex); list_for_each_entry_safe(handler, tmp, &ec->list, node) { if (query_bit == handler->query_bit) { - list_del(&handler->node); - kfree(handler); + list_del_init(&handler->node); + list_add(&handler->node, &free_list); } } mutex_unlock(&ec->mutex); + list_for_each_entry(handler, &free_list, node) + acpi_ec_put_query_handler(handler); } EXPORT_SYMBOL_GPL(acpi_ec_remove_query_handler); @@ -626,59 +918,58 @@ static void acpi_ec_run(void *cxt) else if (handler->handle) acpi_evaluate_object(handler->handle, NULL, NULL, NULL); pr_debug("##### Query(0x%02x) stopped #####\n", handler->query_bit); - kfree(handler); + acpi_ec_put_query_handler(handler); } -static int acpi_ec_sync_query(struct acpi_ec *ec, u8 *data) +static int acpi_ec_query(struct acpi_ec *ec, u8 *data) { u8 value = 0; - int status; - struct acpi_ec_query_handler *handler, *copy; + int result; + acpi_status status; + struct acpi_ec_query_handler *handler; + struct transaction t = {.command = ACPI_EC_COMMAND_QUERY, + .wdata = NULL, .rdata = &value, + .wlen = 0, .rlen = 1}; - status = acpi_ec_query_unlocked(ec, &value); + /* + * Query the EC to find out which _Qxx method we need to evaluate. + * Note that successful completion of the query causes the ACPI_EC_SCI + * bit to be cleared (and thus clearing the interrupt source). + */ + result = acpi_ec_transaction(ec, &t); + if (result) + return result; if (data) *data = value; - if (status) - return status; + if (!value) + return -ENODATA; + mutex_lock(&ec->mutex); list_for_each_entry(handler, &ec->list, node) { if (value == handler->query_bit) { /* have custom handler for this bit */ - copy = kmalloc(sizeof(*handler), GFP_KERNEL); - if (!copy) - return -ENOMEM; - memcpy(copy, handler, sizeof(*copy)); + handler = acpi_ec_get_query_handler(handler); pr_debug("##### Query(0x%02x) scheduled #####\n", handler->query_bit); - return acpi_os_execute((copy->func) ? + status = acpi_os_execute((handler->func) ? OSL_NOTIFY_HANDLER : OSL_GPE_HANDLER, - acpi_ec_run, copy); + acpi_ec_run, handler); + if (ACPI_FAILURE(status)) + result = -EBUSY; + break; } } - return 0; -} - -static void acpi_ec_gpe_query(void *ec_cxt) -{ - struct acpi_ec *ec = ec_cxt; - - if (!ec) - return; - mutex_lock(&ec->mutex); - acpi_ec_sync_query(ec, NULL); mutex_unlock(&ec->mutex); + return result; } -static int ec_check_sci(struct acpi_ec *ec, u8 state) +static void acpi_ec_gpe_poller(struct work_struct *work) { - if (state & ACPI_EC_FLAG_SCI) { - if (!test_and_set_bit(EC_FLAGS_QUERY_PENDING, &ec->flags)) { - pr_debug("***** Event started *****\n"); - return acpi_os_execute(OSL_NOTIFY_HANDLER, - acpi_ec_gpe_query, ec); - } - } - return 0; + struct acpi_ec *ec = container_of(work, struct acpi_ec, work); + + pr_debug("***** Event poller started *****\n"); + acpi_ec_query(ec, NULL); + pr_debug("***** Event poller stopped *****\n"); } static u32 acpi_ec_gpe_handler(acpi_handle gpe_device, @@ -688,11 +979,9 @@ static u32 acpi_ec_gpe_handler(acpi_handle gpe_device, struct acpi_ec *ec = data; spin_lock_irqsave(&ec->lock, flags); - if (advance_transaction(ec)) - wake_up(&ec->wait); + advance_transaction(ec); spin_unlock_irqrestore(&ec->lock, flags); - ec_check_sci(ec, acpi_ec_read_status(ec)); - return ACPI_INTERRUPT_HANDLED | ACPI_REENABLE_GPE; + return ACPI_INTERRUPT_HANDLED; } /* -------------------------------------------------------------------------- @@ -750,11 +1039,11 @@ static struct acpi_ec *make_acpi_ec(void) if (!ec) return NULL; - ec->flags = 1 << EC_FLAGS_QUERY_PENDING; mutex_init(&ec->mutex); init_waitqueue_head(&ec->wait); INIT_LIST_HEAD(&ec->list); spin_lock_init(&ec->lock); + INIT_WORK(&ec->work, acpi_ec_gpe_poller); return ec; } @@ -810,13 +1099,13 @@ static int ec_install_handlers(struct acpi_ec *ec) if (test_bit(EC_FLAGS_HANDLERS_INSTALLED, &ec->flags)) return 0; - status = acpi_install_gpe_handler(NULL, ec->gpe, + status = acpi_install_gpe_raw_handler(NULL, ec->gpe, ACPI_GPE_EDGE_TRIGGERED, &acpi_ec_gpe_handler, ec); if (ACPI_FAILURE(status)) return -ENODEV; - acpi_enable_gpe(NULL, ec->gpe); + acpi_ec_start(ec, false); status = acpi_install_address_space_handler(ec->handle, ACPI_ADR_SPACE_EC, &acpi_ec_space_handler, @@ -831,7 +1120,7 @@ static int ec_install_handlers(struct acpi_ec *ec) pr_err("Fail in evaluating the _REG object" " of EC device. Broken bios is suspected.\n"); } else { - acpi_disable_gpe(NULL, ec->gpe); + acpi_ec_stop(ec, false); acpi_remove_gpe_handler(NULL, ec->gpe, &acpi_ec_gpe_handler); return -ENODEV; @@ -846,7 +1135,7 @@ static void ec_remove_handlers(struct acpi_ec *ec) { if (!test_bit(EC_FLAGS_HANDLERS_INSTALLED, &ec->flags)) return; - acpi_disable_gpe(NULL, ec->gpe); + acpi_ec_stop(ec, false); if (ACPI_FAILURE(acpi_remove_address_space_handler(ec->handle, ACPI_ADR_SPACE_EC, &acpi_ec_space_handler))) pr_err("failed to remove space handler\n"); @@ -900,14 +1189,11 @@ static int acpi_ec_add(struct acpi_device *device) ret = ec_install_handlers(ec); /* EC is fully operational, allow queries */ - clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags); + acpi_ec_enable_event(ec); /* Clear stale _Q events if hardware might require that */ - if (EC_FLAGS_CLEAR_ON_RESUME) { - mutex_lock(&ec->mutex); + if (EC_FLAGS_CLEAR_ON_RESUME) acpi_ec_clear(ec); - mutex_unlock(&ec->mutex); - } return ret; } diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 163e82f..56b321a 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -35,6 +35,13 @@ void acpi_int340x_thermal_init(void); int acpi_sysfs_init(void); void acpi_container_init(void); void acpi_memory_hotplug_init(void); +#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC +int acpi_ioapic_add(struct acpi_pci_root *root); +int acpi_ioapic_remove(struct acpi_pci_root *root); +#else +static inline int acpi_ioapic_add(struct acpi_pci_root *root) { return 0; } +static inline int acpi_ioapic_remove(struct acpi_pci_root *root) { return 0; } +#endif #ifdef CONFIG_ACPI_DOCK void register_dock_dependent_device(struct acpi_device *adev, acpi_handle dshandle); @@ -68,6 +75,8 @@ static inline void acpi_debugfs_init(void) { return; } #endif void acpi_lpss_init(void); +void acpi_apd_init(void); + acpi_status acpi_hotplug_schedule(struct acpi_device *adev, u32 src); bool acpi_queue_hotplug_work(struct work_struct *work); void acpi_device_hotplug(struct acpi_device *adev, u32 src); @@ -122,11 +131,13 @@ struct acpi_ec { unsigned long data_addr; unsigned long global_lock; unsigned long flags; + unsigned long reference_count; struct mutex mutex; wait_queue_head_t wait; struct list_head list; struct transaction *curr; spinlock_t lock; + struct work_struct work; }; extern struct acpi_ec *first_ec; diff --git a/drivers/acpi/ioapic.c b/drivers/acpi/ioapic.c new file mode 100644 index 0000000..ccdc8db --- /dev/null +++ b/drivers/acpi/ioapic.c @@ -0,0 +1,229 @@ +/* + * IOAPIC/IOxAPIC/IOSAPIC driver + * + * Copyright (C) 2009 Fujitsu Limited. + * (c) Copyright 2009 Hewlett-Packard Development Company, L.P. + * + * Copyright (C) 2014 Intel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Based on original drivers/pci/ioapic.c + * Yinghai Lu <yinghai@kernel.org> + * Jiang Liu <jiang.liu@intel.com> + */ + +/* + * This driver manages I/O APICs added by hotplug after boot. + * We try to claim all I/O APIC devices, but those present at boot were + * registered when we parsed the ACPI MADT. + */ + +#define pr_fmt(fmt) "ACPI : IOAPIC: " fmt + +#include <linux/slab.h> +#include <linux/acpi.h> +#include <linux/pci.h> +#include <acpi/acpi.h> + +struct acpi_pci_ioapic { + acpi_handle root_handle; + acpi_handle handle; + u32 gsi_base; + struct resource res; + struct pci_dev *pdev; + struct list_head list; +}; + +static LIST_HEAD(ioapic_list); +static DEFINE_MUTEX(ioapic_list_lock); + +static acpi_status setup_res(struct acpi_resource *acpi_res, void *data) +{ + struct resource *res = data; + struct resource_win win; + + res->flags = 0; + if (acpi_dev_filter_resource_type(acpi_res, IORESOURCE_MEM) == 0) + return AE_OK; + + if (!acpi_dev_resource_memory(acpi_res, res)) { + if (acpi_dev_resource_address_space(acpi_res, &win) || + acpi_dev_resource_ext_address_space(acpi_res, &win)) + *res = win.res; + } + if ((res->flags & IORESOURCE_PREFETCH) || + (res->flags & IORESOURCE_DISABLED)) + res->flags = 0; + + return AE_CTRL_TERMINATE; +} + +static bool acpi_is_ioapic(acpi_handle handle, char **type) +{ + acpi_status status; + struct acpi_device_info *info; + char *hid = NULL; + bool match = false; + + if (!acpi_has_method(handle, "_GSB")) + return false; + + status = acpi_get_object_info(handle, &info); + if (ACPI_SUCCESS(status)) { + if (info->valid & ACPI_VALID_HID) + hid = info->hardware_id.string; + if (hid) { + if (strcmp(hid, "ACPI0009") == 0) { + *type = "IOxAPIC"; + match = true; + } else if (strcmp(hid, "ACPI000A") == 0) { + *type = "IOAPIC"; + match = true; + } + } + kfree(info); + } + + return match; +} + +static acpi_status handle_ioapic_add(acpi_handle handle, u32 lvl, + void *context, void **rv) +{ + acpi_status status; + unsigned long long gsi_base; + struct acpi_pci_ioapic *ioapic; + struct pci_dev *dev = NULL; + struct resource *res = NULL; + char *type = NULL; + + if (!acpi_is_ioapic(handle, &type)) + return AE_OK; + + mutex_lock(&ioapic_list_lock); + list_for_each_entry(ioapic, &ioapic_list, list) + if (ioapic->handle == handle) { + mutex_unlock(&ioapic_list_lock); + return AE_OK; + } + + status = acpi_evaluate_integer(handle, "_GSB", NULL, &gsi_base); + if (ACPI_FAILURE(status)) { + acpi_handle_warn(handle, "failed to evaluate _GSB method\n"); + goto exit; + } + + ioapic = kzalloc(sizeof(*ioapic), GFP_KERNEL); + if (!ioapic) { + pr_err("cannot allocate memory for new IOAPIC\n"); + goto exit; + } else { + ioapic->root_handle = (acpi_handle)context; + ioapic->handle = handle; + ioapic->gsi_base = (u32)gsi_base; + INIT_LIST_HEAD(&ioapic->list); + } + + if (acpi_ioapic_registered(handle, (u32)gsi_base)) + goto done; + + dev = acpi_get_pci_dev(handle); + if (dev && pci_resource_len(dev, 0)) { + if (pci_enable_device(dev) < 0) + goto exit_put; + pci_set_master(dev); + if (pci_request_region(dev, 0, type)) + goto exit_disable; + res = &dev->resource[0]; + ioapic->pdev = dev; + } else { + pci_dev_put(dev); + dev = NULL; + + res = &ioapic->res; + acpi_walk_resources(handle, METHOD_NAME__CRS, setup_res, res); + if (res->flags == 0) { + acpi_handle_warn(handle, "failed to get resource\n"); + goto exit_free; + } else if (request_resource(&iomem_resource, res)) { + acpi_handle_warn(handle, "failed to insert resource\n"); + goto exit_free; + } + } + + if (acpi_register_ioapic(handle, res->start, (u32)gsi_base)) { + acpi_handle_warn(handle, "failed to register IOAPIC\n"); + goto exit_release; + } +done: + list_add(&ioapic->list, &ioapic_list); + mutex_unlock(&ioapic_list_lock); + + if (dev) + dev_info(&dev->dev, "%s at %pR, GSI %u\n", + type, res, (u32)gsi_base); + else + acpi_handle_info(handle, "%s at %pR, GSI %u\n", + type, res, (u32)gsi_base); + + return AE_OK; + +exit_release: + if (dev) + pci_release_region(dev, 0); + else + release_resource(res); +exit_disable: + if (dev) + pci_disable_device(dev); +exit_put: + pci_dev_put(dev); +exit_free: + kfree(ioapic); +exit: + mutex_unlock(&ioapic_list_lock); + *(acpi_status *)rv = AE_ERROR; + return AE_OK; +} + +int acpi_ioapic_add(struct acpi_pci_root *root) +{ + acpi_status status, retval = AE_OK; + + status = acpi_walk_namespace(ACPI_TYPE_DEVICE, root->device->handle, + UINT_MAX, handle_ioapic_add, NULL, + root->device->handle, (void **)&retval); + + return ACPI_SUCCESS(status) && ACPI_SUCCESS(retval) ? 0 : -ENODEV; +} + +int acpi_ioapic_remove(struct acpi_pci_root *root) +{ + int retval = 0; + struct acpi_pci_ioapic *ioapic, *tmp; + + mutex_lock(&ioapic_list_lock); + list_for_each_entry_safe(ioapic, tmp, &ioapic_list, list) { + if (root->device->handle != ioapic->root_handle) + continue; + + if (acpi_unregister_ioapic(ioapic->handle, ioapic->gsi_base)) + retval = -EBUSY; + + if (ioapic->pdev) { + pci_release_region(ioapic->pdev, 0); + pci_disable_device(ioapic->pdev); + pci_dev_put(ioapic->pdev); + } else if (ioapic->res.flags && ioapic->res.parent) { + release_resource(&ioapic->res); + } + list_del(&ioapic->list); + kfree(ioapic); + } + mutex_unlock(&ioapic_list_lock); + + return retval; +} diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c index 24b5476..1333cbdc 100644 --- a/drivers/acpi/numa.c +++ b/drivers/acpi/numa.c @@ -177,12 +177,7 @@ static int __init slit_valid(struct acpi_table_slit *slit) static int __init acpi_parse_slit(struct acpi_table_header *table) { - struct acpi_table_slit *slit; - - if (!table) - return -EINVAL; - - slit = (struct acpi_table_slit *)table; + struct acpi_table_slit *slit = (struct acpi_table_slit *)table; if (!slit_valid(slit)) { printk(KERN_INFO "ACPI: SLIT table looks invalid. Not used.\n"); @@ -260,11 +255,8 @@ acpi_parse_memory_affinity(struct acpi_subtable_header * header, static int __init acpi_parse_srat(struct acpi_table_header *table) { - struct acpi_table_srat *srat; - if (!table) - return -EINVAL; + struct acpi_table_srat *srat = (struct acpi_table_srat *)table; - srat = (struct acpi_table_srat *)table; acpi_srat_revision = srat->header.revision; /* Real work done in acpi_table_parse_srat below. */ diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c index b1def41..e7f718d 100644 --- a/drivers/acpi/pci_irq.c +++ b/drivers/acpi/pci_irq.c @@ -485,14 +485,6 @@ void acpi_pci_irq_disable(struct pci_dev *dev) if (!pin || !dev->irq_managed || dev->irq <= 0) return; - /* Keep IOAPIC pin configuration when suspending */ - if (dev->dev.power.is_prepared) - return; -#ifdef CONFIG_PM - if (dev->dev.power.runtime_status == RPM_SUSPENDING) - return; -#endif - entry = acpi_pci_irq_lookup(dev, pin); if (!entry) return; @@ -513,5 +505,6 @@ void acpi_pci_irq_disable(struct pci_dev *dev) if (gsi >= 0) { acpi_unregister_gsi(gsi); dev->irq_managed = 0; + dev->irq = 0; } } diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index c6bcb8c..68a5f71 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -112,10 +112,10 @@ get_root_bridge_busnr_callback(struct acpi_resource *resource, void *data) if (ACPI_FAILURE(status)) return AE_OK; - if ((address.address_length > 0) && + if ((address.address.address_length > 0) && (address.resource_type == ACPI_BUS_NUMBER_RANGE)) { - res->start = address.minimum; - res->end = address.minimum + address.address_length - 1; + res->start = address.address.minimum; + res->end = address.address.minimum + address.address.address_length - 1; } return AE_OK; @@ -621,6 +621,7 @@ static int acpi_pci_root_add(struct acpi_device *device, if (hotadd) { pcibios_resource_survey_bus(root->bus); pci_assign_unassigned_root_bus_resources(root->bus); + acpi_ioapic_add(root); } pci_lock_rescan_remove(); @@ -644,6 +645,8 @@ static void acpi_pci_root_remove(struct acpi_device *device) pci_stop_root_bus(root->bus); + WARN_ON(acpi_ioapic_remove(root)); + device_set_run_wake(root->bus->bridge, false); pci_acpi_remove_bus_pm_notifier(device); diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 02e4839..7962651 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -4,6 +4,10 @@ * * Alex Chiang <achiang@hp.com> * - Unified x86/ia64 implementations + * + * I/O APIC hotplug support + * Yinghai Lu <yinghai@kernel.org> + * Jiang Liu <jiang.liu@intel.com> */ #include <linux/export.h> #include <linux/acpi.h> @@ -12,6 +16,21 @@ #define _COMPONENT ACPI_PROCESSOR_COMPONENT ACPI_MODULE_NAME("processor_core"); +static struct acpi_table_madt *get_madt_table(void) +{ + static struct acpi_table_madt *madt; + static int read_madt; + + if (!read_madt) { + if (ACPI_FAILURE(acpi_get_table(ACPI_SIG_MADT, 0, + (struct acpi_table_header **)&madt))) + madt = NULL; + read_madt++; + } + + return madt; +} + static int map_lapic_id(struct acpi_subtable_header *entry, u32 acpi_id, int *apic_id) { @@ -67,17 +86,10 @@ static int map_lsapic_id(struct acpi_subtable_header *entry, static int map_madt_entry(int type, u32 acpi_id) { unsigned long madt_end, entry; - static struct acpi_table_madt *madt; - static int read_madt; int phys_id = -1; /* CPU hardware ID */ + struct acpi_table_madt *madt; - if (!read_madt) { - if (ACPI_FAILURE(acpi_get_table(ACPI_SIG_MADT, 0, - (struct acpi_table_header **)&madt))) - madt = NULL; - read_madt++; - } - + madt = get_madt_table(); if (!madt) return phys_id; @@ -203,3 +215,96 @@ int acpi_get_cpuid(acpi_handle handle, int type, u32 acpi_id) return acpi_map_cpuid(phys_id, acpi_id); } EXPORT_SYMBOL_GPL(acpi_get_cpuid); + +#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC +static int get_ioapic_id(struct acpi_subtable_header *entry, u32 gsi_base, + u64 *phys_addr, int *ioapic_id) +{ + struct acpi_madt_io_apic *ioapic = (struct acpi_madt_io_apic *)entry; + + if (ioapic->global_irq_base != gsi_base) + return 0; + + *phys_addr = ioapic->address; + *ioapic_id = ioapic->id; + return 1; +} + +static int parse_madt_ioapic_entry(u32 gsi_base, u64 *phys_addr) +{ + struct acpi_subtable_header *hdr; + unsigned long madt_end, entry; + struct acpi_table_madt *madt; + int apic_id = -1; + + madt = get_madt_table(); + if (!madt) + return apic_id; + + entry = (unsigned long)madt; + madt_end = entry + madt->header.length; + + /* Parse all entries looking for a match. */ + entry += sizeof(struct acpi_table_madt); + while (entry + sizeof(struct acpi_subtable_header) < madt_end) { + hdr = (struct acpi_subtable_header *)entry; + if (hdr->type == ACPI_MADT_TYPE_IO_APIC && + get_ioapic_id(hdr, gsi_base, phys_addr, &apic_id)) + break; + else + entry += hdr->length; + } + + return apic_id; +} + +static int parse_mat_ioapic_entry(acpi_handle handle, u32 gsi_base, + u64 *phys_addr) +{ + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + struct acpi_subtable_header *header; + union acpi_object *obj; + int apic_id = -1; + + if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) + goto exit; + + if (!buffer.length || !buffer.pointer) + goto exit; + + obj = buffer.pointer; + if (obj->type != ACPI_TYPE_BUFFER || + obj->buffer.length < sizeof(struct acpi_subtable_header)) + goto exit; + + header = (struct acpi_subtable_header *)obj->buffer.pointer; + if (header->type == ACPI_MADT_TYPE_IO_APIC) + get_ioapic_id(header, gsi_base, phys_addr, &apic_id); + +exit: + kfree(buffer.pointer); + return apic_id; +} + +/** + * acpi_get_ioapic_id - Get IOAPIC ID and physical address matching @gsi_base + * @handle: ACPI object for IOAPIC device + * @gsi_base: GSI base to match with + * @phys_addr: Pointer to store physical address of matching IOAPIC record + * + * Walk resources returned by ACPI_MAT method, then ACPI MADT table, to search + * for an ACPI IOAPIC record matching @gsi_base. + * Return IOAPIC id and store physical address in @phys_addr if found a match, + * otherwise return <0. + */ +int acpi_get_ioapic_id(acpi_handle handle, u32 gsi_base, u64 *phys_addr) +{ + int apic_id; + + apic_id = parse_mat_ioapic_entry(handle, gsi_base, phys_addr); + if (apic_id == -1) + apic_id = parse_madt_ioapic_entry(gsi_base, phys_addr); + + return apic_id; +} +#endif /* CONFIG_ACPI_HOTPLUG_IOAPIC */ diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 87b704e..c256bd7 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -681,15 +681,13 @@ static int acpi_idle_bm_check(void) } /** - * acpi_idle_do_entry - a helper function that does C2 and C3 type entry + * acpi_idle_do_entry - enter idle state using the appropriate method * @cx: cstate data * * Caller disables interrupt before call and enables interrupt after return. */ -static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx) +static void acpi_idle_do_entry(struct acpi_processor_cx *cx) { - /* Don't trace irqs off for idle */ - stop_critical_timings(); if (cx->entry_method == ACPI_CSTATE_FFH) { /* Call into architectural FFH based C-state */ acpi_processor_ffh_cstate_enter(cx); @@ -703,38 +701,9 @@ static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx) gets asserted in time to freeze execution properly. */ inl(acpi_gbl_FADT.xpm_timer_block.address); } - start_critical_timings(); } /** - * acpi_idle_enter_c1 - enters an ACPI C1 state-type - * @dev: the target CPU - * @drv: cpuidle driver containing cpuidle state info - * @index: index of target state - * - * This is equivalent to the HALT instruction. - */ -static int acpi_idle_enter_c1(struct cpuidle_device *dev, - struct cpuidle_driver *drv, int index) -{ - struct acpi_processor *pr; - struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu); - - pr = __this_cpu_read(processors); - - if (unlikely(!pr)) - return -EINVAL; - - lapic_timer_state_broadcast(pr, cx, 1); - acpi_idle_do_entry(cx); - - lapic_timer_state_broadcast(pr, cx, 0); - - return index; -} - - -/** * acpi_idle_play_dead - enters an ACPI state for long-term idle (i.e. off-lining) * @dev: the target CPU * @index: the index of suggested state @@ -761,47 +730,11 @@ static int acpi_idle_play_dead(struct cpuidle_device *dev, int index) return 0; } -/** - * acpi_idle_enter_simple - enters an ACPI state without BM handling - * @dev: the target CPU - * @drv: cpuidle driver with cpuidle state information - * @index: the index of suggested state - */ -static int acpi_idle_enter_simple(struct cpuidle_device *dev, - struct cpuidle_driver *drv, int index) +static bool acpi_idle_fallback_to_c1(struct acpi_processor *pr) { - struct acpi_processor *pr; - struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu); - - pr = __this_cpu_read(processors); - - if (unlikely(!pr)) - return -EINVAL; - -#ifdef CONFIG_HOTPLUG_CPU - if ((cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) && - !pr->flags.has_cst && - !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED)) - return acpi_idle_enter_c1(dev, drv, CPUIDLE_DRIVER_STATE_START); -#endif - - /* - * Must be done before busmaster disable as we might need to - * access HPET ! - */ - lapic_timer_state_broadcast(pr, cx, 1); - - if (cx->type == ACPI_STATE_C3) - ACPI_FLUSH_CPU_CACHE(); - - /* Tell the scheduler that we are going deep-idle: */ - sched_clock_idle_sleep_event(); - acpi_idle_do_entry(cx); - - sched_clock_idle_wakeup_event(0); - - lapic_timer_state_broadcast(pr, cx, 0); - return index; + return IS_ENABLED(CONFIG_HOTPLUG_CPU) && num_online_cpus() > 1 && + !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED) && + !pr->flags.has_cst; } static int c3_cpu_count; @@ -809,44 +742,14 @@ static DEFINE_RAW_SPINLOCK(c3_lock); /** * acpi_idle_enter_bm - enters C3 with proper BM handling - * @dev: the target CPU - * @drv: cpuidle driver containing state data - * @index: the index of suggested state - * - * If BM is detected, the deepest non-C3 idle state is entered instead. + * @pr: Target processor + * @cx: Target state context */ -static int acpi_idle_enter_bm(struct cpuidle_device *dev, - struct cpuidle_driver *drv, int index) +static void acpi_idle_enter_bm(struct acpi_processor *pr, + struct acpi_processor_cx *cx) { - struct acpi_processor *pr; - struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu); - - pr = __this_cpu_read(processors); - - if (unlikely(!pr)) - return -EINVAL; - -#ifdef CONFIG_HOTPLUG_CPU - if ((cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) && - !pr->flags.has_cst && - !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED)) - return acpi_idle_enter_c1(dev, drv, CPUIDLE_DRIVER_STATE_START); -#endif - - if (!cx->bm_sts_skip && acpi_idle_bm_check()) { - if (drv->safe_state_index >= 0) { - return drv->states[drv->safe_state_index].enter(dev, - drv, drv->safe_state_index); - } else { - acpi_safe_halt(); - return -EBUSY; - } - } - acpi_unlazy_tlb(smp_processor_id()); - /* Tell the scheduler that we are going deep-idle: */ - sched_clock_idle_sleep_event(); /* * Must be done before busmaster disable as we might need to * access HPET ! @@ -856,37 +759,71 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev, /* * disable bus master * bm_check implies we need ARB_DIS - * !bm_check implies we need cache flush * bm_control implies whether we can do ARB_DIS * * That leaves a case where bm_check is set and bm_control is * not set. In that case we cannot do much, we enter C3 * without doing anything. */ - if (pr->flags.bm_check && pr->flags.bm_control) { + if (pr->flags.bm_control) { raw_spin_lock(&c3_lock); c3_cpu_count++; /* Disable bus master arbitration when all CPUs are in C3 */ if (c3_cpu_count == num_online_cpus()) acpi_write_bit_register(ACPI_BITREG_ARB_DISABLE, 1); raw_spin_unlock(&c3_lock); - } else if (!pr->flags.bm_check) { - ACPI_FLUSH_CPU_CACHE(); } acpi_idle_do_entry(cx); /* Re-enable bus master arbitration */ - if (pr->flags.bm_check && pr->flags.bm_control) { + if (pr->flags.bm_control) { raw_spin_lock(&c3_lock); acpi_write_bit_register(ACPI_BITREG_ARB_DISABLE, 0); c3_cpu_count--; raw_spin_unlock(&c3_lock); } - sched_clock_idle_wakeup_event(0); + lapic_timer_state_broadcast(pr, cx, 0); +} + +static int acpi_idle_enter(struct cpuidle_device *dev, + struct cpuidle_driver *drv, int index) +{ + struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu); + struct acpi_processor *pr; + + pr = __this_cpu_read(processors); + if (unlikely(!pr)) + return -EINVAL; + + if (cx->type != ACPI_STATE_C1) { + if (acpi_idle_fallback_to_c1(pr)) { + index = CPUIDLE_DRIVER_STATE_START; + cx = per_cpu(acpi_cstate[index], dev->cpu); + } else if (cx->type == ACPI_STATE_C3 && pr->flags.bm_check) { + if (cx->bm_sts_skip || !acpi_idle_bm_check()) { + acpi_idle_enter_bm(pr, cx); + return index; + } else if (drv->safe_state_index >= 0) { + index = drv->safe_state_index; + cx = per_cpu(acpi_cstate[index], dev->cpu); + } else { + acpi_safe_halt(); + return -EBUSY; + } + } + } + + lapic_timer_state_broadcast(pr, cx, 1); + + if (cx->type == ACPI_STATE_C3) + ACPI_FLUSH_CPU_CACHE(); + + acpi_idle_do_entry(cx); lapic_timer_state_broadcast(pr, cx, 0); + return index; } @@ -981,27 +918,12 @@ static int acpi_processor_setup_cpuidle_states(struct acpi_processor *pr) strncpy(state->desc, cx->desc, CPUIDLE_DESC_LEN); state->exit_latency = cx->latency; state->target_residency = cx->latency * latency_factor; + state->enter = acpi_idle_enter; state->flags = 0; - switch (cx->type) { - case ACPI_STATE_C1: - - state->enter = acpi_idle_enter_c1; - state->enter_dead = acpi_idle_play_dead; - drv->safe_state_index = count; - break; - - case ACPI_STATE_C2: - state->enter = acpi_idle_enter_simple; + if (cx->type == ACPI_STATE_C1 || cx->type == ACPI_STATE_C2) { state->enter_dead = acpi_idle_play_dead; drv->safe_state_index = count; - break; - - case ACPI_STATE_C3: - state->enter = pr->flags.bm_check ? - acpi_idle_enter_bm : - acpi_idle_enter_simple; - break; } count++; diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c index 782a0d1..4752b99 100644 --- a/drivers/acpi/resource.c +++ b/drivers/acpi/resource.c @@ -34,21 +34,34 @@ #define valid_IRQ(i) (true) #endif -static unsigned long acpi_dev_memresource_flags(u64 len, u8 write_protect, - bool window) +static bool acpi_dev_resource_len_valid(u64 start, u64 end, u64 len, bool io) { - unsigned long flags = IORESOURCE_MEM; + u64 reslen = end - start + 1; - if (len == 0) - flags |= IORESOURCE_DISABLED; + /* + * CHECKME: len might be required to check versus a minimum + * length as well. 1 for io is fine, but for memory it does + * not make any sense at all. + */ + if (len && reslen && reslen == len && start <= end) + return true; - if (write_protect == ACPI_READ_WRITE_MEMORY) - flags |= IORESOURCE_MEM_WRITEABLE; + pr_info("ACPI: invalid or unassigned resource %s [%016llx - %016llx] length [%016llx]\n", + io ? "io" : "mem", start, end, len); + + return false; +} + +static void acpi_dev_memresource_flags(struct resource *res, u64 len, + u8 write_protect) +{ + res->flags = IORESOURCE_MEM; - if (window) - flags |= IORESOURCE_WINDOW; + if (!acpi_dev_resource_len_valid(res->start, res->end, len, false)) + res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET; - return flags; + if (write_protect == ACPI_READ_WRITE_MEMORY) + res->flags |= IORESOURCE_MEM_WRITEABLE; } static void acpi_dev_get_memresource(struct resource *res, u64 start, u64 len, @@ -56,7 +69,7 @@ static void acpi_dev_get_memresource(struct resource *res, u64 start, u64 len, { res->start = start; res->end = start + len - 1; - res->flags = acpi_dev_memresource_flags(len, write_protect, false); + acpi_dev_memresource_flags(res, len, write_protect); } /** @@ -67,6 +80,11 @@ static void acpi_dev_get_memresource(struct resource *res, u64 start, u64 len, * Check if the given ACPI resource object represents a memory resource and * if that's the case, use the information in it to populate the generic * resource object pointed to by @res. + * + * Return: + * 1) false with res->flags setting to zero: not the expected resource type + * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource + * 3) true: valid assigned resource */ bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res) { @@ -77,60 +95,52 @@ bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res) switch (ares->type) { case ACPI_RESOURCE_TYPE_MEMORY24: memory24 = &ares->data.memory24; - if (!memory24->minimum && !memory24->address_length) - return false; - acpi_dev_get_memresource(res, memory24->minimum, - memory24->address_length, + acpi_dev_get_memresource(res, memory24->minimum << 8, + memory24->address_length << 8, memory24->write_protect); break; case ACPI_RESOURCE_TYPE_MEMORY32: memory32 = &ares->data.memory32; - if (!memory32->minimum && !memory32->address_length) - return false; acpi_dev_get_memresource(res, memory32->minimum, memory32->address_length, memory32->write_protect); break; case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: fixed_memory32 = &ares->data.fixed_memory32; - if (!fixed_memory32->address && !fixed_memory32->address_length) - return false; acpi_dev_get_memresource(res, fixed_memory32->address, fixed_memory32->address_length, fixed_memory32->write_protect); break; default: + res->flags = 0; return false; } - return true; + + return !(res->flags & IORESOURCE_DISABLED); } EXPORT_SYMBOL_GPL(acpi_dev_resource_memory); -static unsigned int acpi_dev_ioresource_flags(u64 start, u64 end, u8 io_decode, - bool window) +static void acpi_dev_ioresource_flags(struct resource *res, u64 len, + u8 io_decode) { - int flags = IORESOURCE_IO; + res->flags = IORESOURCE_IO; - if (io_decode == ACPI_DECODE_16) - flags |= IORESOURCE_IO_16BIT_ADDR; + if (!acpi_dev_resource_len_valid(res->start, res->end, len, true)) + res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET; - if (start > end || end >= 0x10003) - flags |= IORESOURCE_DISABLED; + if (res->end >= 0x10003) + res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET; - if (window) - flags |= IORESOURCE_WINDOW; - - return flags; + if (io_decode == ACPI_DECODE_16) + res->flags |= IORESOURCE_IO_16BIT_ADDR; } static void acpi_dev_get_ioresource(struct resource *res, u64 start, u64 len, u8 io_decode) { - u64 end = start + len - 1; - res->start = start; - res->end = end; - res->flags = acpi_dev_ioresource_flags(start, end, io_decode, false); + res->end = start + len - 1; + acpi_dev_ioresource_flags(res, len, io_decode); } /** @@ -141,6 +151,11 @@ static void acpi_dev_get_ioresource(struct resource *res, u64 start, u64 len, * Check if the given ACPI resource object represents an I/O resource and * if that's the case, use the information in it to populate the generic * resource object pointed to by @res. + * + * Return: + * 1) false with res->flags setting to zero: not the expected resource type + * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource + * 3) true: valid assigned resource */ bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res) { @@ -150,135 +165,143 @@ bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res) switch (ares->type) { case ACPI_RESOURCE_TYPE_IO: io = &ares->data.io; - if (!io->minimum && !io->address_length) - return false; acpi_dev_get_ioresource(res, io->minimum, io->address_length, io->io_decode); break; case ACPI_RESOURCE_TYPE_FIXED_IO: fixed_io = &ares->data.fixed_io; - if (!fixed_io->address && !fixed_io->address_length) - return false; acpi_dev_get_ioresource(res, fixed_io->address, fixed_io->address_length, ACPI_DECODE_10); break; default: + res->flags = 0; return false; } - return true; + + return !(res->flags & IORESOURCE_DISABLED); } EXPORT_SYMBOL_GPL(acpi_dev_resource_io); -/** - * acpi_dev_resource_address_space - Extract ACPI address space information. - * @ares: Input ACPI resource object. - * @res: Output generic resource object. - * - * Check if the given ACPI resource object represents an address space resource - * and if that's the case, use the information in it to populate the generic - * resource object pointed to by @res. - */ -bool acpi_dev_resource_address_space(struct acpi_resource *ares, - struct resource *res) +static bool acpi_decode_space(struct resource_win *win, + struct acpi_resource_address *addr, + struct acpi_address64_attribute *attr) { - acpi_status status; - struct acpi_resource_address64 addr; - bool window; - u64 len; - u8 io_decode; + u8 iodec = attr->granularity == 0xfff ? ACPI_DECODE_10 : ACPI_DECODE_16; + bool wp = addr->info.mem.write_protect; + u64 len = attr->address_length; + struct resource *res = &win->res; - switch (ares->type) { - case ACPI_RESOURCE_TYPE_ADDRESS16: - case ACPI_RESOURCE_TYPE_ADDRESS32: - case ACPI_RESOURCE_TYPE_ADDRESS64: - break; - default: - return false; - } + /* + * Filter out invalid descriptor according to ACPI Spec 5.0, section + * 6.4.3.5 Address Space Resource Descriptors. + */ + if ((addr->min_address_fixed != addr->max_address_fixed && len) || + (addr->min_address_fixed && addr->max_address_fixed && !len)) + pr_debug("ACPI: Invalid address space min_addr_fix %d, max_addr_fix %d, len %llx\n", + addr->min_address_fixed, addr->max_address_fixed, len); - status = acpi_resource_to_address64(ares, &addr); - if (ACPI_FAILURE(status)) - return false; + res->start = attr->minimum; + res->end = attr->maximum; - res->start = addr.minimum; - res->end = addr.maximum; - window = addr.producer_consumer == ACPI_PRODUCER; + /* + * For bridges that translate addresses across the bridge, + * translation_offset is the offset that must be added to the + * address on the secondary side to obtain the address on the + * primary side. Non-bridge devices must list 0 for all Address + * Translation offset bits. + */ + if (addr->producer_consumer == ACPI_PRODUCER) { + res->start += attr->translation_offset; + res->end += attr->translation_offset; + } else if (attr->translation_offset) { + pr_debug("ACPI: translation_offset(%lld) is invalid for non-bridge device.\n", + attr->translation_offset); + } - switch(addr.resource_type) { + switch (addr->resource_type) { case ACPI_MEMORY_RANGE: - len = addr.maximum - addr.minimum + 1; - res->flags = acpi_dev_memresource_flags(len, - addr.info.mem.write_protect, - window); + acpi_dev_memresource_flags(res, len, wp); break; case ACPI_IO_RANGE: - io_decode = addr.granularity == 0xfff ? - ACPI_DECODE_10 : ACPI_DECODE_16; - res->flags = acpi_dev_ioresource_flags(addr.minimum, - addr.maximum, - io_decode, window); + acpi_dev_ioresource_flags(res, len, iodec); break; case ACPI_BUS_NUMBER_RANGE: res->flags = IORESOURCE_BUS; break; default: - res->flags = 0; + return false; } - return true; + win->offset = attr->translation_offset; + + if (addr->producer_consumer == ACPI_PRODUCER) + res->flags |= IORESOURCE_WINDOW; + + if (addr->info.mem.caching == ACPI_PREFETCHABLE_MEMORY) + res->flags |= IORESOURCE_PREFETCH; + + return !(res->flags & IORESOURCE_DISABLED); +} + +/** + * acpi_dev_resource_address_space - Extract ACPI address space information. + * @ares: Input ACPI resource object. + * @win: Output generic resource object. + * + * Check if the given ACPI resource object represents an address space resource + * and if that's the case, use the information in it to populate the generic + * resource object pointed to by @win. + * + * Return: + * 1) false with win->res.flags setting to zero: not the expected resource type + * 2) false with IORESOURCE_DISABLED in win->res.flags: valid unassigned + * resource + * 3) true: valid assigned resource + */ +bool acpi_dev_resource_address_space(struct acpi_resource *ares, + struct resource_win *win) +{ + struct acpi_resource_address64 addr; + + win->res.flags = 0; + if (ACPI_FAILURE(acpi_resource_to_address64(ares, &addr))) + return false; + + return acpi_decode_space(win, (struct acpi_resource_address *)&addr, + &addr.address); } EXPORT_SYMBOL_GPL(acpi_dev_resource_address_space); /** * acpi_dev_resource_ext_address_space - Extract ACPI address space information. * @ares: Input ACPI resource object. - * @res: Output generic resource object. + * @win: Output generic resource object. * * Check if the given ACPI resource object represents an extended address space * resource and if that's the case, use the information in it to populate the - * generic resource object pointed to by @res. + * generic resource object pointed to by @win. + * + * Return: + * 1) false with win->res.flags setting to zero: not the expected resource type + * 2) false with IORESOURCE_DISABLED in win->res.flags: valid unassigned + * resource + * 3) true: valid assigned resource */ bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares, - struct resource *res) + struct resource_win *win) { struct acpi_resource_extended_address64 *ext_addr; - bool window; - u64 len; - u8 io_decode; + win->res.flags = 0; if (ares->type != ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64) return false; ext_addr = &ares->data.ext_address64; - res->start = ext_addr->minimum; - res->end = ext_addr->maximum; - window = ext_addr->producer_consumer == ACPI_PRODUCER; - - switch(ext_addr->resource_type) { - case ACPI_MEMORY_RANGE: - len = ext_addr->maximum - ext_addr->minimum + 1; - res->flags = acpi_dev_memresource_flags(len, - ext_addr->info.mem.write_protect, - window); - break; - case ACPI_IO_RANGE: - io_decode = ext_addr->granularity == 0xfff ? - ACPI_DECODE_10 : ACPI_DECODE_16; - res->flags = acpi_dev_ioresource_flags(ext_addr->minimum, - ext_addr->maximum, - io_decode, window); - break; - case ACPI_BUS_NUMBER_RANGE: - res->flags = IORESOURCE_BUS; - break; - default: - res->flags = 0; - } - - return true; + return acpi_decode_space(win, (struct acpi_resource_address *)ext_addr, + &ext_addr->address); } EXPORT_SYMBOL_GPL(acpi_dev_resource_ext_address_space); @@ -310,7 +333,7 @@ static void acpi_dev_irqresource_disabled(struct resource *res, u32 gsi) { res->start = gsi; res->end = gsi; - res->flags = IORESOURCE_IRQ | IORESOURCE_DISABLED; + res->flags = IORESOURCE_IRQ | IORESOURCE_DISABLED | IORESOURCE_UNSET; } static void acpi_dev_get_irqresource(struct resource *res, u32 gsi, @@ -369,6 +392,11 @@ static void acpi_dev_get_irqresource(struct resource *res, u32 gsi, * represented by the resource and populate the generic resource object pointed * to by @res accordingly. If the registration of the GSI is not successful, * IORESOURCE_DISABLED will be set it that object's flags. + * + * Return: + * 1) false with res->flags setting to zero: not the expected resource type + * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource + * 3) true: valid assigned resource */ bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index, struct resource *res) @@ -402,6 +430,7 @@ bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index, ext_irq->sharable, false); break; default: + res->flags = 0; return false; } @@ -415,12 +444,7 @@ EXPORT_SYMBOL_GPL(acpi_dev_resource_interrupt); */ void acpi_dev_free_resource_list(struct list_head *list) { - struct resource_list_entry *rentry, *re; - - list_for_each_entry_safe(rentry, re, list, node) { - list_del(&rentry->node); - kfree(rentry); - } + resource_list_free(list); } EXPORT_SYMBOL_GPL(acpi_dev_free_resource_list); @@ -432,18 +456,19 @@ struct res_proc_context { int error; }; -static acpi_status acpi_dev_new_resource_entry(struct resource *r, +static acpi_status acpi_dev_new_resource_entry(struct resource_win *win, struct res_proc_context *c) { - struct resource_list_entry *rentry; + struct resource_entry *rentry; - rentry = kmalloc(sizeof(*rentry), GFP_KERNEL); + rentry = resource_list_create_entry(NULL, 0); if (!rentry) { c->error = -ENOMEM; return AE_NO_MEMORY; } - rentry->res = *r; - list_add_tail(&rentry->node, c->list); + *rentry->res = win->res; + rentry->offset = win->offset; + resource_list_add_tail(rentry, c->list); c->count++; return AE_OK; } @@ -452,7 +477,8 @@ static acpi_status acpi_dev_process_resource(struct acpi_resource *ares, void *context) { struct res_proc_context *c = context; - struct resource r; + struct resource_win win; + struct resource *res = &win.res; int i; if (c->preproc) { @@ -467,18 +493,18 @@ static acpi_status acpi_dev_process_resource(struct acpi_resource *ares, } } - memset(&r, 0, sizeof(r)); + memset(&win, 0, sizeof(win)); - if (acpi_dev_resource_memory(ares, &r) - || acpi_dev_resource_io(ares, &r) - || acpi_dev_resource_address_space(ares, &r) - || acpi_dev_resource_ext_address_space(ares, &r)) - return acpi_dev_new_resource_entry(&r, c); + if (acpi_dev_resource_memory(ares, res) + || acpi_dev_resource_io(ares, res) + || acpi_dev_resource_address_space(ares, &win) + || acpi_dev_resource_ext_address_space(ares, &win)) + return acpi_dev_new_resource_entry(&win, c); - for (i = 0; acpi_dev_resource_interrupt(ares, i, &r); i++) { + for (i = 0; acpi_dev_resource_interrupt(ares, i, res); i++) { acpi_status status; - status = acpi_dev_new_resource_entry(&r, c); + status = acpi_dev_new_resource_entry(&win, c); if (ACPI_FAILURE(status)) return status; } @@ -503,7 +529,7 @@ static acpi_status acpi_dev_process_resource(struct acpi_resource *ares, * returned as the final error code. * * The resultant struct resource objects are put on the list pointed to by - * @list, that must be empty initially, as members of struct resource_list_entry + * @list, that must be empty initially, as members of struct resource_entry * objects. Callers of this routine should use %acpi_dev_free_resource_list() to * free that list. * @@ -538,3 +564,58 @@ int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list, return c.count; } EXPORT_SYMBOL_GPL(acpi_dev_get_resources); + +/** + * acpi_dev_filter_resource_type - Filter ACPI resource according to resource + * types + * @ares: Input ACPI resource object. + * @types: Valid resource types of IORESOURCE_XXX + * + * This is a hepler function to support acpi_dev_get_resources(), which filters + * ACPI resource objects according to resource types. + */ +int acpi_dev_filter_resource_type(struct acpi_resource *ares, + unsigned long types) +{ + unsigned long type = 0; + + switch (ares->type) { + case ACPI_RESOURCE_TYPE_MEMORY24: + case ACPI_RESOURCE_TYPE_MEMORY32: + case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: + type = IORESOURCE_MEM; + break; + case ACPI_RESOURCE_TYPE_IO: + case ACPI_RESOURCE_TYPE_FIXED_IO: + type = IORESOURCE_IO; + break; + case ACPI_RESOURCE_TYPE_IRQ: + case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: + type = IORESOURCE_IRQ; + break; + case ACPI_RESOURCE_TYPE_DMA: + case ACPI_RESOURCE_TYPE_FIXED_DMA: + type = IORESOURCE_DMA; + break; + case ACPI_RESOURCE_TYPE_GENERIC_REGISTER: + type = IORESOURCE_REG; + break; + case ACPI_RESOURCE_TYPE_ADDRESS16: + case ACPI_RESOURCE_TYPE_ADDRESS32: + case ACPI_RESOURCE_TYPE_ADDRESS64: + case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: + if (ares->data.address.resource_type == ACPI_MEMORY_RANGE) + type = IORESOURCE_MEM; + else if (ares->data.address.resource_type == ACPI_IO_RANGE) + type = IORESOURCE_IO; + else if (ares->data.address.resource_type == + ACPI_BUS_NUMBER_RANGE) + type = IORESOURCE_BUS; + break; + default: + break; + } + + return (type & types) ? 0 : 1; +} +EXPORT_SYMBOL_GPL(acpi_dev_filter_resource_type); diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index dc4d896..bbca783 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -2544,6 +2544,7 @@ int __init acpi_scan_init(void) acpi_pci_link_init(); acpi_processor_init(); acpi_lpss_init(); + acpi_apd_init(); acpi_cmos_rtc_init(); acpi_container_init(); acpi_memory_hotplug_init(); diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index 8aa9254..7f251dd 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -321,7 +321,7 @@ static struct dmi_system_id acpisleep_dmi_table[] __initdata = { {}, }; -static void acpi_sleep_dmi_check(void) +static void __init acpi_sleep_dmi_check(void) { int year; diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 032db45..88a4f99 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -522,6 +522,24 @@ static struct dmi_system_id video_dmi_table[] __initdata = { DMI_MATCH(DMI_PRODUCT_NAME, "370R4E/370R4V/370R5E/3570RE/370R5V"), }, }, + { + /* https://bugzilla.redhat.com/show_bug.cgi?id=1186097 */ + .callback = video_disable_native_backlight, + .ident = "SAMSUNG 3570R/370R/470R/450R/510R/4450RV", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), + DMI_MATCH(DMI_PRODUCT_NAME, "3570R/370R/470R/450R/510R/4450RV"), + }, + }, + { + /* https://bugzilla.redhat.com/show_bug.cgi?id=1094948 */ + .callback = video_disable_native_backlight, + .ident = "SAMSUNG 730U3E/740U3E", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), + DMI_MATCH(DMI_PRODUCT_NAME, "730U3E/740U3E"), + }, + }, { /* https://bugzilla.redhat.com/show_bug.cgi?id=1163574 */ diff --git a/drivers/base/power/common.c b/drivers/base/power/common.c index b0f1388..f32b802 100644 --- a/drivers/base/power/common.c +++ b/drivers/base/power/common.c @@ -19,8 +19,8 @@ * @dev: Device to handle. * * If power.subsys_data is NULL, point it to a new object, otherwise increment - * its reference counter. Return 1 if a new object has been created, otherwise - * return 0 or error code. + * its reference counter. Return 0 if new object has been created or refcount + * increased, otherwise negative error code. */ int dev_pm_get_subsys_data(struct device *dev) { @@ -56,13 +56,11 @@ EXPORT_SYMBOL_GPL(dev_pm_get_subsys_data); * @dev: Device to handle. * * If the reference counter of power.subsys_data is zero after dropping the - * reference, power.subsys_data is removed. Return 1 if that happens or 0 - * otherwise. + * reference, power.subsys_data is removed. */ -int dev_pm_put_subsys_data(struct device *dev) +void dev_pm_put_subsys_data(struct device *dev) { struct pm_subsys_data *psd; - int ret = 1; spin_lock_irq(&dev->power.lock); @@ -70,18 +68,14 @@ int dev_pm_put_subsys_data(struct device *dev) if (!psd) goto out; - if (--psd->refcount == 0) { + if (--psd->refcount == 0) dev->power.subsys_data = NULL; - } else { + else psd = NULL; - ret = 0; - } out: spin_unlock_irq(&dev->power.lock); kfree(psd); - - return ret; } EXPORT_SYMBOL_GPL(dev_pm_put_subsys_data); diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 0d8780c..ba4abbe 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -344,14 +344,7 @@ static int genpd_dev_pm_qos_notifier(struct notifier_block *nb, struct device *dev; gpd_data = container_of(nb, struct generic_pm_domain_data, nb); - - mutex_lock(&gpd_data->lock); dev = gpd_data->base.dev; - if (!dev) { - mutex_unlock(&gpd_data->lock); - return NOTIFY_DONE; - } - mutex_unlock(&gpd_data->lock); for (;;) { struct generic_pm_domain *genpd; @@ -1384,25 +1377,66 @@ EXPORT_SYMBOL_GPL(pm_genpd_syscore_poweron); #endif /* CONFIG_PM_SLEEP */ -static struct generic_pm_domain_data *__pm_genpd_alloc_dev_data(struct device *dev) +static struct generic_pm_domain_data *genpd_alloc_dev_data(struct device *dev, + struct generic_pm_domain *genpd, + struct gpd_timing_data *td) { struct generic_pm_domain_data *gpd_data; + int ret; + + ret = dev_pm_get_subsys_data(dev); + if (ret) + return ERR_PTR(ret); gpd_data = kzalloc(sizeof(*gpd_data), GFP_KERNEL); - if (!gpd_data) - return NULL; + if (!gpd_data) { + ret = -ENOMEM; + goto err_put; + } + + if (td) + gpd_data->td = *td; - mutex_init(&gpd_data->lock); + gpd_data->base.dev = dev; + gpd_data->need_restore = -1; + gpd_data->td.constraint_changed = true; + gpd_data->td.effective_constraint_ns = -1; gpd_data->nb.notifier_call = genpd_dev_pm_qos_notifier; - dev_pm_qos_add_notifier(dev, &gpd_data->nb); + + spin_lock_irq(&dev->power.lock); + + if (dev->power.subsys_data->domain_data) { + ret = -EINVAL; + goto err_free; + } + + dev->power.subsys_data->domain_data = &gpd_data->base; + dev->pm_domain = &genpd->domain; + + spin_unlock_irq(&dev->power.lock); + return gpd_data; + + err_free: + spin_unlock_irq(&dev->power.lock); + kfree(gpd_data); + err_put: + dev_pm_put_subsys_data(dev); + return ERR_PTR(ret); } -static void __pm_genpd_free_dev_data(struct device *dev, - struct generic_pm_domain_data *gpd_data) +static void genpd_free_dev_data(struct device *dev, + struct generic_pm_domain_data *gpd_data) { - dev_pm_qos_remove_notifier(dev, &gpd_data->nb); + spin_lock_irq(&dev->power.lock); + + dev->pm_domain = NULL; + dev->power.subsys_data->domain_data = NULL; + + spin_unlock_irq(&dev->power.lock); + kfree(gpd_data); + dev_pm_put_subsys_data(dev); } /** @@ -1414,8 +1448,7 @@ static void __pm_genpd_free_dev_data(struct device *dev, int __pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev, struct gpd_timing_data *td) { - struct generic_pm_domain_data *gpd_data_new, *gpd_data = NULL; - struct pm_domain_data *pdd; + struct generic_pm_domain_data *gpd_data; int ret = 0; dev_dbg(dev, "%s()\n", __func__); @@ -1423,9 +1456,9 @@ int __pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev, if (IS_ERR_OR_NULL(genpd) || IS_ERR_OR_NULL(dev)) return -EINVAL; - gpd_data_new = __pm_genpd_alloc_dev_data(dev); - if (!gpd_data_new) - return -ENOMEM; + gpd_data = genpd_alloc_dev_data(dev, genpd, td); + if (IS_ERR(gpd_data)) + return PTR_ERR(gpd_data); genpd_acquire_lock(genpd); @@ -1434,50 +1467,22 @@ int __pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev, goto out; } - list_for_each_entry(pdd, &genpd->dev_list, list_node) - if (pdd->dev == dev) { - ret = -EINVAL; - goto out; - } - - ret = dev_pm_get_subsys_data(dev); + ret = genpd->attach_dev ? genpd->attach_dev(genpd, dev) : 0; if (ret) goto out; genpd->device_count++; genpd->max_off_time_changed = true; - spin_lock_irq(&dev->power.lock); - - dev->pm_domain = &genpd->domain; - if (dev->power.subsys_data->domain_data) { - gpd_data = to_gpd_data(dev->power.subsys_data->domain_data); - } else { - gpd_data = gpd_data_new; - dev->power.subsys_data->domain_data = &gpd_data->base; - } - gpd_data->refcount++; - if (td) - gpd_data->td = *td; - - spin_unlock_irq(&dev->power.lock); - - if (genpd->attach_dev) - genpd->attach_dev(genpd, dev); - - mutex_lock(&gpd_data->lock); - gpd_data->base.dev = dev; list_add_tail(&gpd_data->base.list_node, &genpd->dev_list); - gpd_data->need_restore = -1; - gpd_data->td.constraint_changed = true; - gpd_data->td.effective_constraint_ns = -1; - mutex_unlock(&gpd_data->lock); out: genpd_release_lock(genpd); - if (gpd_data != gpd_data_new) - __pm_genpd_free_dev_data(dev, gpd_data_new); + if (ret) + genpd_free_dev_data(dev, gpd_data); + else + dev_pm_qos_add_notifier(dev, &gpd_data->nb); return ret; } @@ -1504,7 +1509,6 @@ int pm_genpd_remove_device(struct generic_pm_domain *genpd, { struct generic_pm_domain_data *gpd_data; struct pm_domain_data *pdd; - bool remove = false; int ret = 0; dev_dbg(dev, "%s()\n", __func__); @@ -1514,6 +1518,11 @@ int pm_genpd_remove_device(struct generic_pm_domain *genpd, || pd_to_genpd(dev->pm_domain) != genpd) return -EINVAL; + /* The above validation also means we have existing domain_data. */ + pdd = dev->power.subsys_data->domain_data; + gpd_data = to_gpd_data(pdd); + dev_pm_qos_remove_notifier(dev, &gpd_data->nb); + genpd_acquire_lock(genpd); if (genpd->prepared_count > 0) { @@ -1527,58 +1536,22 @@ int pm_genpd_remove_device(struct generic_pm_domain *genpd, if (genpd->detach_dev) genpd->detach_dev(genpd, dev); - spin_lock_irq(&dev->power.lock); - - dev->pm_domain = NULL; - pdd = dev->power.subsys_data->domain_data; list_del_init(&pdd->list_node); - gpd_data = to_gpd_data(pdd); - if (--gpd_data->refcount == 0) { - dev->power.subsys_data->domain_data = NULL; - remove = true; - } - - spin_unlock_irq(&dev->power.lock); - - mutex_lock(&gpd_data->lock); - pdd->dev = NULL; - mutex_unlock(&gpd_data->lock); genpd_release_lock(genpd); - dev_pm_put_subsys_data(dev); - if (remove) - __pm_genpd_free_dev_data(dev, gpd_data); + genpd_free_dev_data(dev, gpd_data); return 0; out: genpd_release_lock(genpd); + dev_pm_qos_add_notifier(dev, &gpd_data->nb); return ret; } /** - * pm_genpd_dev_need_restore - Set/unset the device's "need restore" flag. - * @dev: Device to set/unset the flag for. - * @val: The new value of the device's "need restore" flag. - */ -void pm_genpd_dev_need_restore(struct device *dev, bool val) -{ - struct pm_subsys_data *psd; - unsigned long flags; - - spin_lock_irqsave(&dev->power.lock, flags); - - psd = dev_to_psd(dev); - if (psd && psd->domain_data) - to_gpd_data(psd->domain_data)->need_restore = val ? 1 : 0; - - spin_unlock_irqrestore(&dev->power.lock, flags); -} -EXPORT_SYMBOL_GPL(pm_genpd_dev_need_restore); - -/** * pm_genpd_add_subdomain - Add a subdomain to an I/O PM domain. * @genpd: Master PM domain to add the subdomain to. * @subdomain: Subdomain to be added. diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c index 106c693..15bf299 100644 --- a/drivers/base/power/opp.c +++ b/drivers/base/power/opp.c @@ -117,20 +117,20 @@ do { \ } while (0) /** - * find_device_opp() - find device_opp struct using device pointer + * _find_device_opp() - find device_opp struct using device pointer * @dev: device pointer used to lookup device OPPs * * Search list of device OPPs for one containing matching device. Does a RCU * reader operation to grab the pointer needed. * - * Returns pointer to 'struct device_opp' if found, otherwise -ENODEV or + * Return: pointer to 'struct device_opp' if found, otherwise -ENODEV or * -EINVAL based on type of error. * * Locking: This function must be called under rcu_read_lock(). device_opp * is a RCU protected pointer. This means that device_opp is valid as long * as we are under RCU lock. */ -static struct device_opp *find_device_opp(struct device *dev) +static struct device_opp *_find_device_opp(struct device *dev) { struct device_opp *tmp_dev_opp, *dev_opp = ERR_PTR(-ENODEV); @@ -153,7 +153,7 @@ static struct device_opp *find_device_opp(struct device *dev) * dev_pm_opp_get_voltage() - Gets the voltage corresponding to an available opp * @opp: opp for which voltage has to be returned for * - * Return voltage in micro volt corresponding to the opp, else + * Return: voltage in micro volt corresponding to the opp, else * return 0 * * Locking: This function must be called under rcu_read_lock(). opp is a rcu @@ -169,6 +169,8 @@ unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp) struct dev_pm_opp *tmp_opp; unsigned long v = 0; + opp_rcu_lockdep_assert(); + tmp_opp = rcu_dereference(opp); if (unlikely(IS_ERR_OR_NULL(tmp_opp)) || !tmp_opp->available) pr_err("%s: Invalid parameters\n", __func__); @@ -183,7 +185,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_get_voltage); * dev_pm_opp_get_freq() - Gets the frequency corresponding to an available opp * @opp: opp for which frequency has to be returned for * - * Return frequency in hertz corresponding to the opp, else + * Return: frequency in hertz corresponding to the opp, else * return 0 * * Locking: This function must be called under rcu_read_lock(). opp is a rcu @@ -199,6 +201,8 @@ unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp) struct dev_pm_opp *tmp_opp; unsigned long f = 0; + opp_rcu_lockdep_assert(); + tmp_opp = rcu_dereference(opp); if (unlikely(IS_ERR_OR_NULL(tmp_opp)) || !tmp_opp->available) pr_err("%s: Invalid parameters\n", __func__); @@ -213,7 +217,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_get_freq); * dev_pm_opp_get_opp_count() - Get number of opps available in the opp list * @dev: device for which we do this operation * - * This function returns the number of available opps if there are any, + * Return: This function returns the number of available opps if there are any, * else returns 0 if none or the corresponding error value. * * Locking: This function takes rcu_read_lock(). @@ -226,7 +230,7 @@ int dev_pm_opp_get_opp_count(struct device *dev) rcu_read_lock(); - dev_opp = find_device_opp(dev); + dev_opp = _find_device_opp(dev); if (IS_ERR(dev_opp)) { count = PTR_ERR(dev_opp); dev_err(dev, "%s: device OPP not found (%d)\n", @@ -251,9 +255,9 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_get_opp_count); * @freq: frequency to search for * @available: true/false - match for available opp * - * Searches for exact match in the opp list and returns pointer to the matching - * opp if found, else returns ERR_PTR in case of error and should be handled - * using IS_ERR. Error return values can be: + * Return: Searches for exact match in the opp list and returns pointer to the + * matching opp if found, else returns ERR_PTR in case of error and should + * be handled using IS_ERR. Error return values can be: * EINVAL: for bad pointer * ERANGE: no match found for search * ENODEV: if device not found in list of registered devices @@ -280,7 +284,7 @@ struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, opp_rcu_lockdep_assert(); - dev_opp = find_device_opp(dev); + dev_opp = _find_device_opp(dev); if (IS_ERR(dev_opp)) { int r = PTR_ERR(dev_opp); dev_err(dev, "%s: device OPP not found (%d)\n", __func__, r); @@ -307,7 +311,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_exact); * Search for the matching ceil *available* OPP from a starting freq * for a device. * - * Returns matching *opp and refreshes *freq accordingly, else returns + * Return: matching *opp and refreshes *freq accordingly, else returns * ERR_PTR in case of error and should be handled using IS_ERR. Error return * values can be: * EINVAL: for bad pointer @@ -333,7 +337,7 @@ struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, return ERR_PTR(-EINVAL); } - dev_opp = find_device_opp(dev); + dev_opp = _find_device_opp(dev); if (IS_ERR(dev_opp)) return ERR_CAST(dev_opp); @@ -357,7 +361,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_ceil); * Search for the matching floor *available* OPP from a starting freq * for a device. * - * Returns matching *opp and refreshes *freq accordingly, else returns + * Return: matching *opp and refreshes *freq accordingly, else returns * ERR_PTR in case of error and should be handled using IS_ERR. Error return * values can be: * EINVAL: for bad pointer @@ -383,7 +387,7 @@ struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, return ERR_PTR(-EINVAL); } - dev_opp = find_device_opp(dev); + dev_opp = _find_device_opp(dev); if (IS_ERR(dev_opp)) return ERR_CAST(dev_opp); @@ -403,7 +407,16 @@ struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, } EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_floor); -static struct device_opp *add_device_opp(struct device *dev) +/** + * _add_device_opp() - Allocate a new device OPP table + * @dev: device for which we do this operation + * + * New device node which uses OPPs - used when multiple devices with OPP tables + * are maintained. + * + * Return: valid device_opp pointer if success, else NULL. + */ +static struct device_opp *_add_device_opp(struct device *dev) { struct device_opp *dev_opp; @@ -424,8 +437,35 @@ static struct device_opp *add_device_opp(struct device *dev) return dev_opp; } -static int dev_pm_opp_add_dynamic(struct device *dev, unsigned long freq, - unsigned long u_volt, bool dynamic) +/** + * _opp_add_dynamic() - Allocate a dynamic OPP. + * @dev: device for which we do this operation + * @freq: Frequency in Hz for this OPP + * @u_volt: Voltage in uVolts for this OPP + * @dynamic: Dynamically added OPPs. + * + * This function adds an opp definition to the opp list and returns status. + * The opp is made available by default and it can be controlled using + * dev_pm_opp_enable/disable functions and may be removed by dev_pm_opp_remove. + * + * NOTE: "dynamic" parameter impacts OPPs added by the of_init_opp_table and + * freed by of_free_opp_table. + * + * Locking: The internal device_opp and opp structures are RCU protected. + * Hence this function internally uses RCU updater strategy with mutex locks + * to keep the integrity of the internal data structures. Callers should ensure + * that this function is *NOT* called under RCU protection or in contexts where + * mutex cannot be locked. + * + * Return: + * 0 On success OR + * Duplicate OPPs (both freq and volt are same) and opp->available + * -EEXIST Freq are same and volt are different OR + * Duplicate OPPs (both freq and volt are same) and !opp->available + * -ENOMEM Memory allocation failure + */ +static int _opp_add_dynamic(struct device *dev, unsigned long freq, + long u_volt, bool dynamic) { struct device_opp *dev_opp = NULL; struct dev_pm_opp *opp, *new_opp; @@ -449,9 +489,9 @@ static int dev_pm_opp_add_dynamic(struct device *dev, unsigned long freq, new_opp->dynamic = dynamic; /* Check for existing list for 'dev' */ - dev_opp = find_device_opp(dev); + dev_opp = _find_device_opp(dev); if (IS_ERR(dev_opp)) { - dev_opp = add_device_opp(dev); + dev_opp = _add_device_opp(dev); if (!dev_opp) { ret = -ENOMEM; goto free_opp; @@ -519,34 +559,53 @@ free_opp: * mutex cannot be locked. * * Return: - * 0: On success OR + * 0 On success OR * Duplicate OPPs (both freq and volt are same) and opp->available - * -EEXIST: Freq are same and volt are different OR + * -EEXIST Freq are same and volt are different OR * Duplicate OPPs (both freq and volt are same) and !opp->available - * -ENOMEM: Memory allocation failure + * -ENOMEM Memory allocation failure */ int dev_pm_opp_add(struct device *dev, unsigned long freq, unsigned long u_volt) { - return dev_pm_opp_add_dynamic(dev, freq, u_volt, true); + return _opp_add_dynamic(dev, freq, u_volt, true); } EXPORT_SYMBOL_GPL(dev_pm_opp_add); -static void kfree_opp_rcu(struct rcu_head *head) +/** + * _kfree_opp_rcu() - Free OPP RCU handler + * @head: RCU head + */ +static void _kfree_opp_rcu(struct rcu_head *head) { struct dev_pm_opp *opp = container_of(head, struct dev_pm_opp, rcu_head); kfree_rcu(opp, rcu_head); } -static void kfree_device_rcu(struct rcu_head *head) +/** + * _kfree_device_rcu() - Free device_opp RCU handler + * @head: RCU head + */ +static void _kfree_device_rcu(struct rcu_head *head) { struct device_opp *device_opp = container_of(head, struct device_opp, rcu_head); kfree_rcu(device_opp, rcu_head); } -static void __dev_pm_opp_remove(struct device_opp *dev_opp, - struct dev_pm_opp *opp) +/** + * _opp_remove() - Remove an OPP from a table definition + * @dev_opp: points back to the device_opp struct this opp belongs to + * @opp: pointer to the OPP to remove + * + * This function removes an opp definition from the opp list. + * + * Locking: The internal device_opp and opp structures are RCU protected. + * It is assumed that the caller holds required mutex for an RCU updater + * strategy. + */ +static void _opp_remove(struct device_opp *dev_opp, + struct dev_pm_opp *opp) { /* * Notify the changes in the availability of the operable @@ -554,12 +613,12 @@ static void __dev_pm_opp_remove(struct device_opp *dev_opp, */ srcu_notifier_call_chain(&dev_opp->srcu_head, OPP_EVENT_REMOVE, opp); list_del_rcu(&opp->node); - call_srcu(&dev_opp->srcu_head.srcu, &opp->rcu_head, kfree_opp_rcu); + call_srcu(&dev_opp->srcu_head.srcu, &opp->rcu_head, _kfree_opp_rcu); if (list_empty(&dev_opp->opp_list)) { list_del_rcu(&dev_opp->node); call_srcu(&dev_opp->srcu_head.srcu, &dev_opp->rcu_head, - kfree_device_rcu); + _kfree_device_rcu); } } @@ -569,6 +628,12 @@ static void __dev_pm_opp_remove(struct device_opp *dev_opp, * @freq: OPP to remove with matching 'freq' * * This function removes an opp from the opp list. + * + * Locking: The internal device_opp and opp structures are RCU protected. + * Hence this function internally uses RCU updater strategy with mutex locks + * to keep the integrity of the internal data structures. Callers should ensure + * that this function is *NOT* called under RCU protection or in contexts where + * mutex cannot be locked. */ void dev_pm_opp_remove(struct device *dev, unsigned long freq) { @@ -579,7 +644,7 @@ void dev_pm_opp_remove(struct device *dev, unsigned long freq) /* Hold our list modification lock here */ mutex_lock(&dev_opp_list_lock); - dev_opp = find_device_opp(dev); + dev_opp = _find_device_opp(dev); if (IS_ERR(dev_opp)) goto unlock; @@ -596,14 +661,14 @@ void dev_pm_opp_remove(struct device *dev, unsigned long freq) goto unlock; } - __dev_pm_opp_remove(dev_opp, opp); + _opp_remove(dev_opp, opp); unlock: mutex_unlock(&dev_opp_list_lock); } EXPORT_SYMBOL_GPL(dev_pm_opp_remove); /** - * opp_set_availability() - helper to set the availability of an opp + * _opp_set_availability() - helper to set the availability of an opp * @dev: device for which we do this operation * @freq: OPP frequency to modify availability * @availability_req: availability status requested for this opp @@ -611,7 +676,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_remove); * Set the availability of an OPP with an RCU operation, opp_{enable,disable} * share a common logic which is isolated here. * - * Returns -EINVAL for bad pointers, -ENOMEM if no memory available for the + * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the * copy operation, returns 0 if no modifcation was done OR modification was * successful. * @@ -621,8 +686,8 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_remove); * that this function is *NOT* called under RCU protection or in contexts where * mutex locking or synchronize_rcu() blocking calls cannot be used. */ -static int opp_set_availability(struct device *dev, unsigned long freq, - bool availability_req) +static int _opp_set_availability(struct device *dev, unsigned long freq, + bool availability_req) { struct device_opp *dev_opp; struct dev_pm_opp *new_opp, *tmp_opp, *opp = ERR_PTR(-ENODEV); @@ -638,7 +703,7 @@ static int opp_set_availability(struct device *dev, unsigned long freq, mutex_lock(&dev_opp_list_lock); /* Find the device_opp */ - dev_opp = find_device_opp(dev); + dev_opp = _find_device_opp(dev); if (IS_ERR(dev_opp)) { r = PTR_ERR(dev_opp); dev_warn(dev, "%s: Device OPP not found (%d)\n", __func__, r); @@ -668,7 +733,7 @@ static int opp_set_availability(struct device *dev, unsigned long freq, list_replace_rcu(&opp->node, &new_opp->node); mutex_unlock(&dev_opp_list_lock); - call_srcu(&dev_opp->srcu_head.srcu, &opp->rcu_head, kfree_opp_rcu); + call_srcu(&dev_opp->srcu_head.srcu, &opp->rcu_head, _kfree_opp_rcu); /* Notify the change of the OPP availability */ if (availability_req) @@ -700,10 +765,14 @@ unlock: * integrity of the internal data structures. Callers should ensure that * this function is *NOT* called under RCU protection or in contexts where * mutex locking or synchronize_rcu() blocking calls cannot be used. + * + * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the + * copy operation, returns 0 if no modifcation was done OR modification was + * successful. */ int dev_pm_opp_enable(struct device *dev, unsigned long freq) { - return opp_set_availability(dev, freq, true); + return _opp_set_availability(dev, freq, true); } EXPORT_SYMBOL_GPL(dev_pm_opp_enable); @@ -722,26 +791,41 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_enable); * integrity of the internal data structures. Callers should ensure that * this function is *NOT* called under RCU protection or in contexts where * mutex locking or synchronize_rcu() blocking calls cannot be used. + * + * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the + * copy operation, returns 0 if no modifcation was done OR modification was + * successful. */ int dev_pm_opp_disable(struct device *dev, unsigned long freq) { - return opp_set_availability(dev, freq, false); + return _opp_set_availability(dev, freq, false); } EXPORT_SYMBOL_GPL(dev_pm_opp_disable); /** * dev_pm_opp_get_notifier() - find notifier_head of the device with opp * @dev: device pointer used to lookup device OPPs. + * + * Return: pointer to notifier head if found, otherwise -ENODEV or + * -EINVAL based on type of error casted as pointer. value must be checked + * with IS_ERR to determine valid pointer or error result. + * + * Locking: This function must be called under rcu_read_lock(). dev_opp is a RCU + * protected pointer. The reason for the same is that the opp pointer which is + * returned will remain valid for use with opp_get_{voltage, freq} only while + * under the locked area. The pointer returned must be used prior to unlocking + * with rcu_read_unlock() to maintain the integrity of the pointer. */ struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev) { - struct device_opp *dev_opp = find_device_opp(dev); + struct device_opp *dev_opp = _find_device_opp(dev); if (IS_ERR(dev_opp)) return ERR_CAST(dev_opp); /* matching type */ return &dev_opp->srcu_head; } +EXPORT_SYMBOL_GPL(dev_pm_opp_get_notifier); #ifdef CONFIG_OF /** @@ -749,6 +833,22 @@ struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev) * @dev: device pointer used to lookup device OPPs. * * Register the initial OPP table with the OPP library for given device. + * + * Locking: The internal device_opp and opp structures are RCU protected. + * Hence this function indirectly uses RCU updater strategy with mutex locks + * to keep the integrity of the internal data structures. Callers should ensure + * that this function is *NOT* called under RCU protection or in contexts where + * mutex cannot be locked. + * + * Return: + * 0 On success OR + * Duplicate OPPs (both freq and volt are same) and opp->available + * -EEXIST Freq are same and volt are different OR + * Duplicate OPPs (both freq and volt are same) and !opp->available + * -ENOMEM Memory allocation failure + * -ENODEV when 'operating-points' property is not found or is invalid data + * in device node. + * -ENODATA when empty 'operating-points' property is found */ int of_init_opp_table(struct device *dev) { @@ -777,7 +877,7 @@ int of_init_opp_table(struct device *dev) unsigned long freq = be32_to_cpup(val++) * 1000; unsigned long volt = be32_to_cpup(val++); - if (dev_pm_opp_add_dynamic(dev, freq, volt, false)) + if (_opp_add_dynamic(dev, freq, volt, false)) dev_warn(dev, "%s: Failed to add OPP %ld\n", __func__, freq); nr -= 2; @@ -792,6 +892,12 @@ EXPORT_SYMBOL_GPL(of_init_opp_table); * @dev: device pointer used to lookup device OPPs. * * Free OPPs created using static entries present in DT. + * + * Locking: The internal device_opp and opp structures are RCU protected. + * Hence this function indirectly uses RCU updater strategy with mutex locks + * to keep the integrity of the internal data structures. Callers should ensure + * that this function is *NOT* called under RCU protection or in contexts where + * mutex cannot be locked. */ void of_free_opp_table(struct device *dev) { @@ -799,7 +905,7 @@ void of_free_opp_table(struct device *dev) struct dev_pm_opp *opp, *tmp; /* Check for existing list for 'dev' */ - dev_opp = find_device_opp(dev); + dev_opp = _find_device_opp(dev); if (IS_ERR(dev_opp)) { int error = PTR_ERR(dev_opp); if (error != -ENODEV) @@ -816,7 +922,7 @@ void of_free_opp_table(struct device *dev) /* Free static OPPs */ list_for_each_entry_safe(opp, tmp, &dev_opp->opp_list, node) { if (!opp->dynamic) - __dev_pm_opp_remove(dev_opp, opp); + _opp_remove(dev_opp, opp); } mutex_unlock(&dev_opp_list_lock); diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c index a8fe4c1..e56d538 100644 --- a/drivers/base/power/qos.c +++ b/drivers/base/power/qos.c @@ -64,6 +64,8 @@ enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, s32 mask) struct pm_qos_flags *pqf; s32 val; + lockdep_assert_held(&dev->power.lock); + if (IS_ERR_OR_NULL(qos)) return PM_QOS_FLAGS_UNDEFINED; @@ -104,6 +106,8 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_flags); */ s32 __dev_pm_qos_read_value(struct device *dev) { + lockdep_assert_held(&dev->power.lock); + return IS_ERR_OR_NULL(dev->power.qos) ? 0 : pm_qos_read_value(&dev->power.qos->resume_latency); } diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c index 63fc7f0..2a04d34 100644 --- a/drivers/block/xen-blkback/blkback.c +++ b/drivers/block/xen-blkback/blkback.c @@ -47,6 +47,7 @@ #include <asm/xen/hypervisor.h> #include <asm/xen/hypercall.h> #include <xen/balloon.h> +#include <xen/grant_table.h> #include "common.h" /* @@ -100,7 +101,7 @@ module_param(log_stats, int, 0644); #define BLKBACK_INVALID_HANDLE (~0) -/* Number of free pages to remove on each call to free_xenballooned_pages */ +/* Number of free pages to remove on each call to gnttab_free_pages */ #define NUM_BATCH_FREE_PAGES 10 static inline int get_free_page(struct xen_blkif *blkif, struct page **page) @@ -111,7 +112,7 @@ static inline int get_free_page(struct xen_blkif *blkif, struct page **page) if (list_empty(&blkif->free_pages)) { BUG_ON(blkif->free_pages_num != 0); spin_unlock_irqrestore(&blkif->free_pages_lock, flags); - return alloc_xenballooned_pages(1, page, false); + return gnttab_alloc_pages(1, page); } BUG_ON(blkif->free_pages_num == 0); page[0] = list_first_entry(&blkif->free_pages, struct page, lru); @@ -151,14 +152,14 @@ static inline void shrink_free_pagepool(struct xen_blkif *blkif, int num) blkif->free_pages_num--; if (++num_pages == NUM_BATCH_FREE_PAGES) { spin_unlock_irqrestore(&blkif->free_pages_lock, flags); - free_xenballooned_pages(num_pages, page); + gnttab_free_pages(num_pages, page); spin_lock_irqsave(&blkif->free_pages_lock, flags); num_pages = 0; } } spin_unlock_irqrestore(&blkif->free_pages_lock, flags); if (num_pages != 0) - free_xenballooned_pages(num_pages, page); + gnttab_free_pages(num_pages, page); } #define vaddr(page) ((unsigned long)pfn_to_kaddr(page_to_pfn(page))) @@ -262,6 +263,17 @@ static void put_persistent_gnt(struct xen_blkif *blkif, atomic_dec(&blkif->persistent_gnt_in_use); } +static void free_persistent_gnts_unmap_callback(int result, + struct gntab_unmap_queue_data *data) +{ + struct completion *c = data->data; + + /* BUG_ON used to reproduce existing behaviour, + but is this the best way to deal with this? */ + BUG_ON(result); + complete(c); +} + static void free_persistent_gnts(struct xen_blkif *blkif, struct rb_root *root, unsigned int num) { @@ -269,8 +281,17 @@ static void free_persistent_gnts(struct xen_blkif *blkif, struct rb_root *root, struct page *pages[BLKIF_MAX_SEGMENTS_PER_REQUEST]; struct persistent_gnt *persistent_gnt; struct rb_node *n; - int ret = 0; int segs_to_unmap = 0; + struct gntab_unmap_queue_data unmap_data; + struct completion unmap_completion; + + init_completion(&unmap_completion); + + unmap_data.data = &unmap_completion; + unmap_data.done = &free_persistent_gnts_unmap_callback; + unmap_data.pages = pages; + unmap_data.unmap_ops = unmap; + unmap_data.kunmap_ops = NULL; foreach_grant_safe(persistent_gnt, n, root, node) { BUG_ON(persistent_gnt->handle == @@ -285,9 +306,11 @@ static void free_persistent_gnts(struct xen_blkif *blkif, struct rb_root *root, if (++segs_to_unmap == BLKIF_MAX_SEGMENTS_PER_REQUEST || !rb_next(&persistent_gnt->node)) { - ret = gnttab_unmap_refs(unmap, NULL, pages, - segs_to_unmap); - BUG_ON(ret); + + unmap_data.count = segs_to_unmap; + gnttab_unmap_refs_async(&unmap_data); + wait_for_completion(&unmap_completion); + put_free_pages(blkif, pages, segs_to_unmap); segs_to_unmap = 0; } @@ -653,18 +676,14 @@ void xen_blkbk_free_caches(struct xen_blkif *blkif) shrink_free_pagepool(blkif, 0 /* All */); } -/* - * Unmap the grant references, and also remove the M2P over-rides - * used in the 'pending_req'. - */ -static void xen_blkbk_unmap(struct xen_blkif *blkif, - struct grant_page *pages[], - int num) +static unsigned int xen_blkbk_unmap_prepare( + struct xen_blkif *blkif, + struct grant_page **pages, + unsigned int num, + struct gnttab_unmap_grant_ref *unmap_ops, + struct page **unmap_pages) { - struct gnttab_unmap_grant_ref unmap[BLKIF_MAX_SEGMENTS_PER_REQUEST]; - struct page *unmap_pages[BLKIF_MAX_SEGMENTS_PER_REQUEST]; unsigned int i, invcount = 0; - int ret; for (i = 0; i < num; i++) { if (pages[i]->persistent_gnt != NULL) { @@ -674,21 +693,95 @@ static void xen_blkbk_unmap(struct xen_blkif *blkif, if (pages[i]->handle == BLKBACK_INVALID_HANDLE) continue; unmap_pages[invcount] = pages[i]->page; - gnttab_set_unmap_op(&unmap[invcount], vaddr(pages[i]->page), + gnttab_set_unmap_op(&unmap_ops[invcount], vaddr(pages[i]->page), GNTMAP_host_map, pages[i]->handle); pages[i]->handle = BLKBACK_INVALID_HANDLE; - if (++invcount == BLKIF_MAX_SEGMENTS_PER_REQUEST) { - ret = gnttab_unmap_refs(unmap, NULL, unmap_pages, - invcount); + invcount++; + } + + return invcount; +} + +static void xen_blkbk_unmap_and_respond_callback(int result, struct gntab_unmap_queue_data *data) +{ + struct pending_req* pending_req = (struct pending_req*) (data->data); + struct xen_blkif *blkif = pending_req->blkif; + + /* BUG_ON used to reproduce existing behaviour, + but is this the best way to deal with this? */ + BUG_ON(result); + + put_free_pages(blkif, data->pages, data->count); + make_response(blkif, pending_req->id, + pending_req->operation, pending_req->status); + free_req(blkif, pending_req); + /* + * Make sure the request is freed before releasing blkif, + * or there could be a race between free_req and the + * cleanup done in xen_blkif_free during shutdown. + * + * NB: The fact that we might try to wake up pending_free_wq + * before drain_complete (in case there's a drain going on) + * it's not a problem with our current implementation + * because we can assure there's no thread waiting on + * pending_free_wq if there's a drain going on, but it has + * to be taken into account if the current model is changed. + */ + if (atomic_dec_and_test(&blkif->inflight) && atomic_read(&blkif->drain)) { + complete(&blkif->drain_complete); + } + xen_blkif_put(blkif); +} + +static void xen_blkbk_unmap_and_respond(struct pending_req *req) +{ + struct gntab_unmap_queue_data* work = &req->gnttab_unmap_data; + struct xen_blkif *blkif = req->blkif; + struct grant_page **pages = req->segments; + unsigned int invcount; + + invcount = xen_blkbk_unmap_prepare(blkif, pages, req->nr_pages, + req->unmap, req->unmap_pages); + + work->data = req; + work->done = xen_blkbk_unmap_and_respond_callback; + work->unmap_ops = req->unmap; + work->kunmap_ops = NULL; + work->pages = req->unmap_pages; + work->count = invcount; + + gnttab_unmap_refs_async(&req->gnttab_unmap_data); +} + + +/* + * Unmap the grant references. + * + * This could accumulate ops up to the batch size to reduce the number + * of hypercalls, but since this is only used in error paths there's + * no real need. + */ +static void xen_blkbk_unmap(struct xen_blkif *blkif, + struct grant_page *pages[], + int num) +{ + struct gnttab_unmap_grant_ref unmap[BLKIF_MAX_SEGMENTS_PER_REQUEST]; + struct page *unmap_pages[BLKIF_MAX_SEGMENTS_PER_REQUEST]; + unsigned int invcount = 0; + int ret; + + while (num) { + unsigned int batch = min(num, BLKIF_MAX_SEGMENTS_PER_REQUEST); + + invcount = xen_blkbk_unmap_prepare(blkif, pages, batch, + unmap, unmap_pages); + if (invcount) { + ret = gnttab_unmap_refs(unmap, NULL, unmap_pages, invcount); BUG_ON(ret); put_free_pages(blkif, unmap_pages, invcount); - invcount = 0; } - } - if (invcount) { - ret = gnttab_unmap_refs(unmap, NULL, unmap_pages, invcount); - BUG_ON(ret); - put_free_pages(blkif, unmap_pages, invcount); + pages += batch; + num -= batch; } } @@ -982,32 +1075,8 @@ static void __end_block_io_op(struct pending_req *pending_req, int error) * the grant references associated with 'request' and provide * the proper response on the ring. */ - if (atomic_dec_and_test(&pending_req->pendcnt)) { - struct xen_blkif *blkif = pending_req->blkif; - - xen_blkbk_unmap(blkif, - pending_req->segments, - pending_req->nr_pages); - make_response(blkif, pending_req->id, - pending_req->operation, pending_req->status); - free_req(blkif, pending_req); - /* - * Make sure the request is freed before releasing blkif, - * or there could be a race between free_req and the - * cleanup done in xen_blkif_free during shutdown. - * - * NB: The fact that we might try to wake up pending_free_wq - * before drain_complete (in case there's a drain going on) - * it's not a problem with our current implementation - * because we can assure there's no thread waiting on - * pending_free_wq if there's a drain going on, but it has - * to be taken into account if the current model is changed. - */ - if (atomic_dec_and_test(&blkif->inflight) && atomic_read(&blkif->drain)) { - complete(&blkif->drain_complete); - } - xen_blkif_put(blkif); - } + if (atomic_dec_and_test(&pending_req->pendcnt)) + xen_blkbk_unmap_and_respond(pending_req); } /* diff --git a/drivers/block/xen-blkback/common.h b/drivers/block/xen-blkback/common.h index f65b807..cc90a84 100644 --- a/drivers/block/xen-blkback/common.h +++ b/drivers/block/xen-blkback/common.h @@ -350,6 +350,9 @@ struct pending_req { struct grant_page *indirect_pages[MAX_INDIRECT_PAGES]; struct seg_buf seg[MAX_INDIRECT_SEGMENTS]; struct bio *biolist[MAX_INDIRECT_SEGMENTS]; + struct gnttab_unmap_grant_ref unmap[MAX_INDIRECT_SEGMENTS]; + struct page *unmap_pages[MAX_INDIRECT_SEGMENTS]; + struct gntab_unmap_queue_data gnttab_unmap_data; }; diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c index d5d4cd8..5c0baa9 100644 --- a/drivers/char/hpet.c +++ b/drivers/char/hpet.c @@ -976,8 +976,8 @@ static acpi_status hpet_resources(struct acpi_resource *res, void *data) status = acpi_resource_to_address64(res, &addr); if (ACPI_SUCCESS(status)) { - hdp->hd_phys_address = addr.minimum; - hdp->hd_address = ioremap(addr.minimum, addr.address_length); + hdp->hd_phys_address = addr.address.minimum; + hdp->hd_address = ioremap(addr.address.minimum, addr.address.address_length); if (hpet_is_known(hdp)) { iounmap(hdp->hd_address); diff --git a/drivers/cpufreq/Kconfig.x86 b/drivers/cpufreq/Kconfig.x86 index 89ae88f..c59bdcb 100644 --- a/drivers/cpufreq/Kconfig.x86 +++ b/drivers/cpufreq/Kconfig.x86 @@ -57,6 +57,16 @@ config X86_ACPI_CPUFREQ_CPB By enabling this option the acpi_cpufreq driver provides the old entry in addition to the new boost ones, for compatibility reasons. +config X86_SFI_CPUFREQ + tristate "SFI Performance-States driver" + depends on X86_INTEL_MID && SFI + help + This adds a CPUFreq driver for some Silvermont based Intel Atom + architectures like Z34xx and Z35xx which enumerate processor + performance states through SFI. + + If in doubt, say N. + config ELAN_CPUFREQ tristate "AMD Elan SC400 and SC410" depends on MELAN diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile index b3ca7b0..8b4220a 100644 --- a/drivers/cpufreq/Makefile +++ b/drivers/cpufreq/Makefile @@ -41,6 +41,7 @@ obj-$(CONFIG_X86_P4_CLOCKMOD) += p4-clockmod.o obj-$(CONFIG_X86_CPUFREQ_NFORCE2) += cpufreq-nforce2.o obj-$(CONFIG_X86_INTEL_PSTATE) += intel_pstate.o obj-$(CONFIG_X86_AMD_FREQ_SENSITIVITY) += amd_freq_sensitivity.o +obj-$(CONFIG_X86_SFI_CPUFREQ) += sfi-cpufreq.o ################################################################################## # ARM SoC drivers diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index fde97d6..bab67db 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -320,8 +320,7 @@ static int cpufreq_exit(struct cpufreq_policy *policy) { struct private_data *priv = policy->driver_data; - if (priv->cdev) - cpufreq_cooling_unregister(priv->cdev); + cpufreq_cooling_unregister(priv->cdev); dev_pm_opp_free_cpufreq_table(priv->cpu_dev, &policy->freq_table); of_free_opp_table(priv->cpu_dev); clk_put(policy->clk); diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 46bed4f..28e59a4 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -27,9 +27,21 @@ #include <linux/mutex.h> #include <linux/slab.h> #include <linux/suspend.h> +#include <linux/syscore_ops.h> #include <linux/tick.h> #include <trace/events/power.h> +/* Macros to iterate over lists */ +/* Iterate over online CPUs policies */ +static LIST_HEAD(cpufreq_policy_list); +#define for_each_policy(__policy) \ + list_for_each_entry(__policy, &cpufreq_policy_list, policy_list) + +/* Iterate over governors */ +static LIST_HEAD(cpufreq_governor_list); +#define for_each_governor(__governor) \ + list_for_each_entry(__governor, &cpufreq_governor_list, governor_list) + /** * The "cpufreq driver" - the arch- or hardware-dependent low * level driver of CPUFreq support, and its spinlock. This lock @@ -40,7 +52,6 @@ static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data); static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data_fallback); static DEFINE_RWLOCK(cpufreq_driver_lock); DEFINE_MUTEX(cpufreq_governor_lock); -static LIST_HEAD(cpufreq_policy_list); /* This one keeps track of the previously set governor of a removed CPU */ static DEFINE_PER_CPU(char[CPUFREQ_NAME_LEN], cpufreq_cpu_governor); @@ -62,7 +73,7 @@ static DECLARE_RWSEM(cpufreq_rwsem); /* internal prototypes */ static int __cpufreq_governor(struct cpufreq_policy *policy, unsigned int event); -static unsigned int __cpufreq_get(unsigned int cpu); +static unsigned int __cpufreq_get(struct cpufreq_policy *policy); static void handle_update(struct work_struct *work); /** @@ -93,7 +104,6 @@ void disable_cpufreq(void) { off = 1; } -static LIST_HEAD(cpufreq_governor_list); static DEFINE_MUTEX(cpufreq_governor_mutex); bool have_governor_per_policy(void) @@ -202,7 +212,7 @@ struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu) struct cpufreq_policy *policy = NULL; unsigned long flags; - if (cpufreq_disabled() || (cpu >= nr_cpu_ids)) + if (cpu >= nr_cpu_ids) return NULL; if (!down_read_trylock(&cpufreq_rwsem)) @@ -229,9 +239,6 @@ EXPORT_SYMBOL_GPL(cpufreq_cpu_get); void cpufreq_cpu_put(struct cpufreq_policy *policy) { - if (cpufreq_disabled()) - return; - kobject_put(&policy->kobj); up_read(&cpufreq_rwsem); } @@ -249,12 +256,12 @@ EXPORT_SYMBOL_GPL(cpufreq_cpu_put); * systems as each CPU might be scaled differently. So, use the arch * per-CPU loops_per_jiffy value wherever possible. */ -#ifndef CONFIG_SMP -static unsigned long l_p_j_ref; -static unsigned int l_p_j_ref_freq; - static void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci) { +#ifndef CONFIG_SMP + static unsigned long l_p_j_ref; + static unsigned int l_p_j_ref_freq; + if (ci->flags & CPUFREQ_CONST_LOOPS) return; @@ -270,13 +277,8 @@ static void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci) pr_debug("scaling loops_per_jiffy to %lu for frequency %u kHz\n", loops_per_jiffy, ci->new); } -} -#else -static inline void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci) -{ - return; -} #endif +} static void __cpufreq_notify_transition(struct cpufreq_policy *policy, struct cpufreq_freqs *freqs, unsigned int state) @@ -432,11 +434,11 @@ static ssize_t store_boost(struct kobject *kobj, struct attribute *attr, } define_one_global_rw(boost); -static struct cpufreq_governor *__find_governor(const char *str_governor) +static struct cpufreq_governor *find_governor(const char *str_governor) { struct cpufreq_governor *t; - list_for_each_entry(t, &cpufreq_governor_list, governor_list) + for_each_governor(t) if (!strncasecmp(str_governor, t->name, CPUFREQ_NAME_LEN)) return t; @@ -463,12 +465,12 @@ static int cpufreq_parse_governor(char *str_governor, unsigned int *policy, *policy = CPUFREQ_POLICY_POWERSAVE; err = 0; } - } else if (has_target()) { + } else { struct cpufreq_governor *t; mutex_lock(&cpufreq_governor_mutex); - t = __find_governor(str_governor); + t = find_governor(str_governor); if (t == NULL) { int ret; @@ -478,7 +480,7 @@ static int cpufreq_parse_governor(char *str_governor, unsigned int *policy, mutex_lock(&cpufreq_governor_mutex); if (ret == 0) - t = __find_governor(str_governor); + t = find_governor(str_governor); } if (t != NULL) { @@ -513,8 +515,7 @@ show_one(cpuinfo_transition_latency, cpuinfo.transition_latency); show_one(scaling_min_freq, min); show_one(scaling_max_freq, max); -static ssize_t show_scaling_cur_freq( - struct cpufreq_policy *policy, char *buf) +static ssize_t show_scaling_cur_freq(struct cpufreq_policy *policy, char *buf) { ssize_t ret; @@ -563,7 +564,7 @@ store_one(scaling_max_freq, max); static ssize_t show_cpuinfo_cur_freq(struct cpufreq_policy *policy, char *buf) { - unsigned int cur_freq = __cpufreq_get(policy->cpu); + unsigned int cur_freq = __cpufreq_get(policy); if (!cur_freq) return sprintf(buf, "<unknown>"); return sprintf(buf, "%u\n", cur_freq); @@ -639,7 +640,7 @@ static ssize_t show_scaling_available_governors(struct cpufreq_policy *policy, goto out; } - list_for_each_entry(t, &cpufreq_governor_list, governor_list) { + for_each_governor(t) { if (i >= (ssize_t) ((PAGE_SIZE / sizeof(char)) - (CPUFREQ_NAME_LEN + 2))) goto out; @@ -902,7 +903,7 @@ static int cpufreq_add_dev_interface(struct cpufreq_policy *policy, /* set up files for this cpu device */ drv_attr = cpufreq_driver->attr; - while ((drv_attr) && (*drv_attr)) { + while (drv_attr && *drv_attr) { ret = sysfs_create_file(&policy->kobj, &((*drv_attr)->attr)); if (ret) return ret; @@ -936,7 +937,7 @@ static void cpufreq_init_policy(struct cpufreq_policy *policy) memcpy(&new_policy, policy, sizeof(*policy)); /* Update governor of new_policy to the governor used before hotplug */ - gov = __find_governor(per_cpu(cpufreq_cpu_governor, policy->cpu)); + gov = find_governor(per_cpu(cpufreq_cpu_governor, policy->cpu)); if (gov) pr_debug("Restoring governor %s for cpu %d\n", policy->governor->name, policy->cpu); @@ -958,7 +959,6 @@ static void cpufreq_init_policy(struct cpufreq_policy *policy) } } -#ifdef CONFIG_HOTPLUG_CPU static int cpufreq_add_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu, struct device *dev) { @@ -996,7 +996,6 @@ static int cpufreq_add_policy_cpu(struct cpufreq_policy *policy, return sysfs_create_link(&dev->kobj, &policy->kobj, "cpufreq"); } -#endif static struct cpufreq_policy *cpufreq_policy_restore(unsigned int cpu) { @@ -1033,6 +1032,8 @@ static struct cpufreq_policy *cpufreq_policy_alloc(void) init_rwsem(&policy->rwsem); spin_lock_init(&policy->transition_lock); init_waitqueue_head(&policy->transition_wait); + init_completion(&policy->kobj_unregister); + INIT_WORK(&policy->update, handle_update); return policy; @@ -1091,15 +1092,9 @@ static int update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu, } down_write(&policy->rwsem); - - policy->last_cpu = policy->cpu; policy->cpu = cpu; - up_write(&policy->rwsem); - blocking_notifier_call_chain(&cpufreq_policy_notifier_list, - CPUFREQ_UPDATE_POLICY_CPU, policy); - return 0; } @@ -1110,41 +1105,32 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif) struct cpufreq_policy *policy; unsigned long flags; bool recover_policy = cpufreq_suspended; -#ifdef CONFIG_HOTPLUG_CPU - struct cpufreq_policy *tpolicy; -#endif if (cpu_is_offline(cpu)) return 0; pr_debug("adding CPU %u\n", cpu); -#ifdef CONFIG_SMP /* check whether a different CPU already registered this * CPU because it is in the same boat. */ - policy = cpufreq_cpu_get(cpu); - if (unlikely(policy)) { - cpufreq_cpu_put(policy); + policy = cpufreq_cpu_get_raw(cpu); + if (unlikely(policy)) return 0; - } -#endif if (!down_read_trylock(&cpufreq_rwsem)) return 0; -#ifdef CONFIG_HOTPLUG_CPU /* Check if this cpu was hot-unplugged earlier and has siblings */ read_lock_irqsave(&cpufreq_driver_lock, flags); - list_for_each_entry(tpolicy, &cpufreq_policy_list, policy_list) { - if (cpumask_test_cpu(cpu, tpolicy->related_cpus)) { + for_each_policy(policy) { + if (cpumask_test_cpu(cpu, policy->related_cpus)) { read_unlock_irqrestore(&cpufreq_driver_lock, flags); - ret = cpufreq_add_policy_cpu(tpolicy, cpu, dev); + ret = cpufreq_add_policy_cpu(policy, cpu, dev); up_read(&cpufreq_rwsem); return ret; } } read_unlock_irqrestore(&cpufreq_driver_lock, flags); -#endif /* * Restore the saved policy when doing light-weight init and fall back @@ -1171,9 +1157,6 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif) cpumask_copy(policy->cpus, cpumask_of(cpu)); - init_completion(&policy->kobj_unregister); - INIT_WORK(&policy->update, handle_update); - /* call driver. From then on the cpufreq must be able * to accept all calls to ->verify and ->setpolicy for this CPU */ @@ -1371,11 +1354,10 @@ static int __cpufreq_remove_dev_prepare(struct device *dev, pr_err("%s: Failed to stop governor\n", __func__); return ret; } - } - if (!cpufreq_driver->setpolicy) strncpy(per_cpu(cpufreq_cpu_governor, cpu), policy->governor->name, CPUFREQ_NAME_LEN); + } down_read(&policy->rwsem); cpus = cpumask_weight(policy->cpus); @@ -1416,9 +1398,10 @@ static int __cpufreq_remove_dev_finish(struct device *dev, unsigned long flags; struct cpufreq_policy *policy; - read_lock_irqsave(&cpufreq_driver_lock, flags); + write_lock_irqsave(&cpufreq_driver_lock, flags); policy = per_cpu(cpufreq_cpu_data, cpu); - read_unlock_irqrestore(&cpufreq_driver_lock, flags); + per_cpu(cpufreq_cpu_data, cpu) = NULL; + write_unlock_irqrestore(&cpufreq_driver_lock, flags); if (!policy) { pr_debug("%s: No cpu_data found\n", __func__); @@ -1473,7 +1456,6 @@ static int __cpufreq_remove_dev_finish(struct device *dev, } } - per_cpu(cpufreq_cpu_data, cpu) = NULL; return 0; } @@ -1510,30 +1492,23 @@ static void handle_update(struct work_struct *work) /** * cpufreq_out_of_sync - If actual and saved CPU frequency differs, we're * in deep trouble. - * @cpu: cpu number - * @old_freq: CPU frequency the kernel thinks the CPU runs at + * @policy: policy managing CPUs * @new_freq: CPU frequency the CPU actually runs at * * We adjust to current frequency first, and need to clean up later. * So either call to cpufreq_update_policy() or schedule handle_update()). */ -static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq, +static void cpufreq_out_of_sync(struct cpufreq_policy *policy, unsigned int new_freq) { - struct cpufreq_policy *policy; struct cpufreq_freqs freqs; - unsigned long flags; pr_debug("Warning: CPU frequency out of sync: cpufreq and timing core thinks of %u, is %u kHz\n", - old_freq, new_freq); + policy->cur, new_freq); - freqs.old = old_freq; + freqs.old = policy->cur; freqs.new = new_freq; - read_lock_irqsave(&cpufreq_driver_lock, flags); - policy = per_cpu(cpufreq_cpu_data, cpu); - read_unlock_irqrestore(&cpufreq_driver_lock, flags); - cpufreq_freq_transition_begin(policy, &freqs); cpufreq_freq_transition_end(policy, &freqs, 0); } @@ -1583,22 +1558,21 @@ unsigned int cpufreq_quick_get_max(unsigned int cpu) } EXPORT_SYMBOL(cpufreq_quick_get_max); -static unsigned int __cpufreq_get(unsigned int cpu) +static unsigned int __cpufreq_get(struct cpufreq_policy *policy) { - struct cpufreq_policy *policy = per_cpu(cpufreq_cpu_data, cpu); unsigned int ret_freq = 0; if (!cpufreq_driver->get) return ret_freq; - ret_freq = cpufreq_driver->get(cpu); + ret_freq = cpufreq_driver->get(policy->cpu); if (ret_freq && policy->cur && !(cpufreq_driver->flags & CPUFREQ_CONST_LOOPS)) { /* verify no discrepancy between actual and saved value exists */ if (unlikely(ret_freq != policy->cur)) { - cpufreq_out_of_sync(cpu, policy->cur, ret_freq); + cpufreq_out_of_sync(policy, ret_freq); schedule_work(&policy->update); } } @@ -1619,7 +1593,7 @@ unsigned int cpufreq_get(unsigned int cpu) if (policy) { down_read(&policy->rwsem); - ret_freq = __cpufreq_get(cpu); + ret_freq = __cpufreq_get(policy); up_read(&policy->rwsem); cpufreq_cpu_put(policy); @@ -1682,7 +1656,7 @@ void cpufreq_suspend(void) pr_debug("%s: Suspending Governors\n", __func__); - list_for_each_entry(policy, &cpufreq_policy_list, policy_list) { + for_each_policy(policy) { if (__cpufreq_governor(policy, CPUFREQ_GOV_STOP)) pr_err("%s: Failed to stop governor for policy: %p\n", __func__, policy); @@ -1716,7 +1690,7 @@ void cpufreq_resume(void) pr_debug("%s: Resuming Governors\n", __func__); - list_for_each_entry(policy, &cpufreq_policy_list, policy_list) { + for_each_policy(policy) { if (cpufreq_driver->resume && cpufreq_driver->resume(policy)) pr_err("%s: Failed to resume driver: %p\n", __func__, policy); @@ -2006,10 +1980,6 @@ int cpufreq_driver_target(struct cpufreq_policy *policy, } EXPORT_SYMBOL_GPL(cpufreq_driver_target); -/* - * when "event" is CPUFREQ_GOV_LIMITS - */ - static int __cpufreq_governor(struct cpufreq_policy *policy, unsigned int event) { @@ -2107,7 +2077,7 @@ int cpufreq_register_governor(struct cpufreq_governor *governor) governor->initialized = 0; err = -EBUSY; - if (__find_governor(governor->name) == NULL) { + if (!find_governor(governor->name)) { err = 0; list_add(&governor->governor_list, &cpufreq_governor_list); } @@ -2307,8 +2277,7 @@ int cpufreq_update_policy(unsigned int cpu) policy->cur = new_policy.cur; } else { if (policy->cur != new_policy.cur && has_target()) - cpufreq_out_of_sync(cpu, policy->cur, - new_policy.cur); + cpufreq_out_of_sync(policy, new_policy.cur); } } @@ -2364,7 +2333,7 @@ static int cpufreq_boost_set_sw(int state) struct cpufreq_policy *policy; int ret = -EINVAL; - list_for_each_entry(policy, &cpufreq_policy_list, policy_list) { + for_each_policy(policy) { freq_table = cpufreq_frequency_get_table(policy->cpu); if (freq_table) { ret = cpufreq_frequency_table_cpuinfo(policy, @@ -2454,9 +2423,6 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data) pr_debug("trying to register driver %s\n", driver_data->name); - if (driver_data->setpolicy) - driver_data->flags |= CPUFREQ_CONST_LOOPS; - write_lock_irqsave(&cpufreq_driver_lock, flags); if (cpufreq_driver) { write_unlock_irqrestore(&cpufreq_driver_lock, flags); @@ -2465,6 +2431,9 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data) cpufreq_driver = driver_data; write_unlock_irqrestore(&cpufreq_driver_lock, flags); + if (driver_data->setpolicy) + driver_data->flags |= CPUFREQ_CONST_LOOPS; + if (cpufreq_boost_supported()) { /* * Check if driver provides function to enable boost - @@ -2485,23 +2454,12 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data) if (ret) goto err_boost_unreg; - if (!(cpufreq_driver->flags & CPUFREQ_STICKY)) { - int i; - ret = -ENODEV; - - /* check for at least one working CPU */ - for (i = 0; i < nr_cpu_ids; i++) - if (cpu_possible(i) && per_cpu(cpufreq_cpu_data, i)) { - ret = 0; - break; - } - + if (!(cpufreq_driver->flags & CPUFREQ_STICKY) && + list_empty(&cpufreq_policy_list)) { /* if all ->init() calls failed, unregister */ - if (ret) { - pr_debug("no CPU initialized for driver %s\n", - driver_data->name); - goto err_if_unreg; - } + pr_debug("%s: No CPU initialized for driver %s\n", __func__, + driver_data->name); + goto err_if_unreg; } register_hotcpu_notifier(&cpufreq_cpu_notifier); @@ -2556,6 +2514,14 @@ int cpufreq_unregister_driver(struct cpufreq_driver *driver) } EXPORT_SYMBOL_GPL(cpufreq_unregister_driver); +/* + * Stop cpufreq at shutdown to make sure it isn't holding any locks + * or mutexes when secondary CPUs are halted. + */ +static struct syscore_ops cpufreq_syscore_ops = { + .shutdown = cpufreq_suspend, +}; + static int __init cpufreq_core_init(void) { if (cpufreq_disabled()) @@ -2564,6 +2530,8 @@ static int __init cpufreq_core_init(void) cpufreq_global_kobject = kobject_create(); BUG_ON(!cpufreq_global_kobject); + register_syscore_ops(&cpufreq_syscore_ops); + return 0; } core_initcall(cpufreq_core_init); diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c index 0cd9b4d..5e370a3 100644 --- a/drivers/cpufreq/cpufreq_stats.c +++ b/drivers/cpufreq/cpufreq_stats.c @@ -18,7 +18,6 @@ static spinlock_t cpufreq_stats_lock; struct cpufreq_stats { - unsigned int cpu; unsigned int total_trans; unsigned long long last_time; unsigned int max_state; @@ -31,50 +30,33 @@ struct cpufreq_stats { #endif }; -static DEFINE_PER_CPU(struct cpufreq_stats *, cpufreq_stats_table); - -struct cpufreq_stats_attribute { - struct attribute attr; - ssize_t(*show) (struct cpufreq_stats *, char *); -}; - -static int cpufreq_stats_update(unsigned int cpu) +static int cpufreq_stats_update(struct cpufreq_stats *stats) { - struct cpufreq_stats *stat; - unsigned long long cur_time; + unsigned long long cur_time = get_jiffies_64(); - cur_time = get_jiffies_64(); spin_lock(&cpufreq_stats_lock); - stat = per_cpu(cpufreq_stats_table, cpu); - if (stat->time_in_state) - stat->time_in_state[stat->last_index] += - cur_time - stat->last_time; - stat->last_time = cur_time; + stats->time_in_state[stats->last_index] += cur_time - stats->last_time; + stats->last_time = cur_time; spin_unlock(&cpufreq_stats_lock); return 0; } static ssize_t show_total_trans(struct cpufreq_policy *policy, char *buf) { - struct cpufreq_stats *stat = per_cpu(cpufreq_stats_table, policy->cpu); - if (!stat) - return 0; - return sprintf(buf, "%d\n", - per_cpu(cpufreq_stats_table, stat->cpu)->total_trans); + return sprintf(buf, "%d\n", policy->stats->total_trans); } static ssize_t show_time_in_state(struct cpufreq_policy *policy, char *buf) { + struct cpufreq_stats *stats = policy->stats; ssize_t len = 0; int i; - struct cpufreq_stats *stat = per_cpu(cpufreq_stats_table, policy->cpu); - if (!stat) - return 0; - cpufreq_stats_update(stat->cpu); - for (i = 0; i < stat->state_num; i++) { - len += sprintf(buf + len, "%u %llu\n", stat->freq_table[i], + + cpufreq_stats_update(stats); + for (i = 0; i < stats->state_num; i++) { + len += sprintf(buf + len, "%u %llu\n", stats->freq_table[i], (unsigned long long) - jiffies_64_to_clock_t(stat->time_in_state[i])); + jiffies_64_to_clock_t(stats->time_in_state[i])); } return len; } @@ -82,38 +64,35 @@ static ssize_t show_time_in_state(struct cpufreq_policy *policy, char *buf) #ifdef CONFIG_CPU_FREQ_STAT_DETAILS static ssize_t show_trans_table(struct cpufreq_policy *policy, char *buf) { + struct cpufreq_stats *stats = policy->stats; ssize_t len = 0; int i, j; - struct cpufreq_stats *stat = per_cpu(cpufreq_stats_table, policy->cpu); - if (!stat) - return 0; - cpufreq_stats_update(stat->cpu); len += snprintf(buf + len, PAGE_SIZE - len, " From : To\n"); len += snprintf(buf + len, PAGE_SIZE - len, " : "); - for (i = 0; i < stat->state_num; i++) { + for (i = 0; i < stats->state_num; i++) { if (len >= PAGE_SIZE) break; len += snprintf(buf + len, PAGE_SIZE - len, "%9u ", - stat->freq_table[i]); + stats->freq_table[i]); } if (len >= PAGE_SIZE) return PAGE_SIZE; len += snprintf(buf + len, PAGE_SIZE - len, "\n"); - for (i = 0; i < stat->state_num; i++) { + for (i = 0; i < stats->state_num; i++) { if (len >= PAGE_SIZE) break; len += snprintf(buf + len, PAGE_SIZE - len, "%9u: ", - stat->freq_table[i]); + stats->freq_table[i]); - for (j = 0; j < stat->state_num; j++) { + for (j = 0; j < stats->state_num; j++) { if (len >= PAGE_SIZE) break; len += snprintf(buf + len, PAGE_SIZE - len, "%9u ", - stat->trans_table[i*stat->max_state+j]); + stats->trans_table[i*stats->max_state+j]); } if (len >= PAGE_SIZE) break; @@ -142,28 +121,29 @@ static struct attribute_group stats_attr_group = { .name = "stats" }; -static int freq_table_get_index(struct cpufreq_stats *stat, unsigned int freq) +static int freq_table_get_index(struct cpufreq_stats *stats, unsigned int freq) { int index; - for (index = 0; index < stat->max_state; index++) - if (stat->freq_table[index] == freq) + for (index = 0; index < stats->max_state; index++) + if (stats->freq_table[index] == freq) return index; return -1; } static void __cpufreq_stats_free_table(struct cpufreq_policy *policy) { - struct cpufreq_stats *stat = per_cpu(cpufreq_stats_table, policy->cpu); + struct cpufreq_stats *stats = policy->stats; - if (!stat) + /* Already freed */ + if (!stats) return; - pr_debug("%s: Free stat table\n", __func__); + pr_debug("%s: Free stats table\n", __func__); sysfs_remove_group(&policy->kobj, &stats_attr_group); - kfree(stat->time_in_state); - kfree(stat); - per_cpu(cpufreq_stats_table, policy->cpu) = NULL; + kfree(stats->time_in_state); + kfree(stats); + policy->stats = NULL; } static void cpufreq_stats_free_table(unsigned int cpu) @@ -174,37 +154,33 @@ static void cpufreq_stats_free_table(unsigned int cpu) if (!policy) return; - if (cpufreq_frequency_get_table(policy->cpu)) - __cpufreq_stats_free_table(policy); + __cpufreq_stats_free_table(policy); cpufreq_cpu_put(policy); } static int __cpufreq_stats_create_table(struct cpufreq_policy *policy) { - unsigned int i, count = 0, ret = 0; - struct cpufreq_stats *stat; + unsigned int i = 0, count = 0, ret = -ENOMEM; + struct cpufreq_stats *stats; unsigned int alloc_size; unsigned int cpu = policy->cpu; struct cpufreq_frequency_table *pos, *table; + /* We need cpufreq table for creating stats table */ table = cpufreq_frequency_get_table(cpu); if (unlikely(!table)) return 0; - if (per_cpu(cpufreq_stats_table, cpu)) - return -EBUSY; - stat = kzalloc(sizeof(*stat), GFP_KERNEL); - if ((stat) == NULL) - return -ENOMEM; - - ret = sysfs_create_group(&policy->kobj, &stats_attr_group); - if (ret) - goto error_out; + /* stats already initialized */ + if (policy->stats) + return -EEXIST; - stat->cpu = cpu; - per_cpu(cpufreq_stats_table, cpu) = stat; + stats = kzalloc(sizeof(*stats), GFP_KERNEL); + if (!stats) + return -ENOMEM; + /* Find total allocation size */ cpufreq_for_each_valid_entry(pos, table) count++; @@ -213,32 +189,40 @@ static int __cpufreq_stats_create_table(struct cpufreq_policy *policy) #ifdef CONFIG_CPU_FREQ_STAT_DETAILS alloc_size += count * count * sizeof(int); #endif - stat->max_state = count; - stat->time_in_state = kzalloc(alloc_size, GFP_KERNEL); - if (!stat->time_in_state) { - ret = -ENOMEM; - goto error_alloc; - } - stat->freq_table = (unsigned int *)(stat->time_in_state + count); + + /* Allocate memory for time_in_state/freq_table/trans_table in one go */ + stats->time_in_state = kzalloc(alloc_size, GFP_KERNEL); + if (!stats->time_in_state) + goto free_stat; + + stats->freq_table = (unsigned int *)(stats->time_in_state + count); #ifdef CONFIG_CPU_FREQ_STAT_DETAILS - stat->trans_table = stat->freq_table + count; + stats->trans_table = stats->freq_table + count; #endif - i = 0; + + stats->max_state = count; + + /* Find valid-unique entries */ cpufreq_for_each_valid_entry(pos, table) - if (freq_table_get_index(stat, pos->frequency) == -1) - stat->freq_table[i++] = pos->frequency; - stat->state_num = i; - spin_lock(&cpufreq_stats_lock); - stat->last_time = get_jiffies_64(); - stat->last_index = freq_table_get_index(stat, policy->cur); - spin_unlock(&cpufreq_stats_lock); - return 0; -error_alloc: - sysfs_remove_group(&policy->kobj, &stats_attr_group); -error_out: - kfree(stat); - per_cpu(cpufreq_stats_table, cpu) = NULL; + if (freq_table_get_index(stats, pos->frequency) == -1) + stats->freq_table[i++] = pos->frequency; + + stats->state_num = i; + stats->last_time = get_jiffies_64(); + stats->last_index = freq_table_get_index(stats, policy->cur); + + policy->stats = stats; + ret = sysfs_create_group(&policy->kobj, &stats_attr_group); + if (!ret) + return 0; + + /* We failed, release resources */ + policy->stats = NULL; + kfree(stats->time_in_state); +free_stat: + kfree(stats); + return ret; } @@ -259,30 +243,12 @@ static void cpufreq_stats_create_table(unsigned int cpu) cpufreq_cpu_put(policy); } -static void cpufreq_stats_update_policy_cpu(struct cpufreq_policy *policy) -{ - struct cpufreq_stats *stat = per_cpu(cpufreq_stats_table, - policy->last_cpu); - - pr_debug("Updating stats_table for new_cpu %u from last_cpu %u\n", - policy->cpu, policy->last_cpu); - per_cpu(cpufreq_stats_table, policy->cpu) = per_cpu(cpufreq_stats_table, - policy->last_cpu); - per_cpu(cpufreq_stats_table, policy->last_cpu) = NULL; - stat->cpu = policy->cpu; -} - static int cpufreq_stat_notifier_policy(struct notifier_block *nb, unsigned long val, void *data) { int ret = 0; struct cpufreq_policy *policy = data; - if (val == CPUFREQ_UPDATE_POLICY_CPU) { - cpufreq_stats_update_policy_cpu(policy); - return 0; - } - if (val == CPUFREQ_CREATE_POLICY) ret = __cpufreq_stats_create_table(policy); else if (val == CPUFREQ_REMOVE_POLICY) @@ -295,35 +261,45 @@ static int cpufreq_stat_notifier_trans(struct notifier_block *nb, unsigned long val, void *data) { struct cpufreq_freqs *freq = data; - struct cpufreq_stats *stat; + struct cpufreq_policy *policy = cpufreq_cpu_get(freq->cpu); + struct cpufreq_stats *stats; int old_index, new_index; - if (val != CPUFREQ_POSTCHANGE) + if (!policy) { + pr_err("%s: No policy found\n", __func__); return 0; + } - stat = per_cpu(cpufreq_stats_table, freq->cpu); - if (!stat) - return 0; + if (val != CPUFREQ_POSTCHANGE) + goto put_policy; - old_index = stat->last_index; - new_index = freq_table_get_index(stat, freq->new); + if (!policy->stats) { + pr_debug("%s: No stats found\n", __func__); + goto put_policy; + } - /* We can't do stat->time_in_state[-1]= .. */ - if (old_index == -1 || new_index == -1) - return 0; + stats = policy->stats; + + old_index = stats->last_index; + new_index = freq_table_get_index(stats, freq->new); - cpufreq_stats_update(freq->cpu); + /* We can't do stats->time_in_state[-1]= .. */ + if (old_index == -1 || new_index == -1) + goto put_policy; if (old_index == new_index) - return 0; + goto put_policy; - spin_lock(&cpufreq_stats_lock); - stat->last_index = new_index; + cpufreq_stats_update(stats); + + stats->last_index = new_index; #ifdef CONFIG_CPU_FREQ_STAT_DETAILS - stat->trans_table[old_index * stat->max_state + new_index]++; + stats->trans_table[old_index * stats->max_state + new_index]++; #endif - stat->total_trans++; - spin_unlock(&cpufreq_stats_lock); + stats->total_trans++; + +put_policy: + cpufreq_cpu_put(policy); return 0; } @@ -374,8 +350,7 @@ static void __exit cpufreq_stats_exit(void) } MODULE_AUTHOR("Zou Nan hai <nanhai.zou@intel.com>"); -MODULE_DESCRIPTION("'cpufreq_stats' - A driver to export cpufreq stats " - "through sysfs filesystem"); +MODULE_DESCRIPTION("Export cpufreq stats via sysfs"); MODULE_LICENSE("GPL"); module_init(cpufreq_stats_init); diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 742eefb..872c577 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -148,6 +148,8 @@ struct perf_limits { int32_t min_perf; int max_policy_pct; int max_sysfs_pct; + int min_policy_pct; + int min_sysfs_pct; }; static struct perf_limits limits = { @@ -159,6 +161,8 @@ static struct perf_limits limits = { .min_perf = 0, .max_policy_pct = 100, .max_sysfs_pct = 100, + .min_policy_pct = 0, + .min_sysfs_pct = 0, }; static inline void pid_reset(struct _pid *pid, int setpoint, int busy, @@ -338,6 +342,33 @@ static void __init intel_pstate_debug_expose_params(void) return sprintf(buf, "%u\n", limits.object); \ } +static ssize_t show_turbo_pct(struct kobject *kobj, + struct attribute *attr, char *buf) +{ + struct cpudata *cpu; + int total, no_turbo, turbo_pct; + uint32_t turbo_fp; + + cpu = all_cpu_data[0]; + + total = cpu->pstate.turbo_pstate - cpu->pstate.min_pstate + 1; + no_turbo = cpu->pstate.max_pstate - cpu->pstate.min_pstate + 1; + turbo_fp = div_fp(int_tofp(no_turbo), int_tofp(total)); + turbo_pct = 100 - fp_toint(mul_fp(turbo_fp, int_tofp(100))); + return sprintf(buf, "%u\n", turbo_pct); +} + +static ssize_t show_num_pstates(struct kobject *kobj, + struct attribute *attr, char *buf) +{ + struct cpudata *cpu; + int total; + + cpu = all_cpu_data[0]; + total = cpu->pstate.turbo_pstate - cpu->pstate.min_pstate + 1; + return sprintf(buf, "%u\n", total); +} + static ssize_t show_no_turbo(struct kobject *kobj, struct attribute *attr, char *buf) { @@ -404,7 +435,9 @@ static ssize_t store_min_perf_pct(struct kobject *a, struct attribute *b, ret = sscanf(buf, "%u", &input); if (ret != 1) return -EINVAL; - limits.min_perf_pct = clamp_t(int, input, 0 , 100); + + limits.min_sysfs_pct = clamp_t(int, input, 0 , 100); + limits.min_perf_pct = max(limits.min_policy_pct, limits.min_sysfs_pct); limits.min_perf = div_fp(int_tofp(limits.min_perf_pct), int_tofp(100)); if (hwp_active) @@ -418,11 +451,15 @@ show_one(min_perf_pct, min_perf_pct); define_one_global_rw(no_turbo); define_one_global_rw(max_perf_pct); define_one_global_rw(min_perf_pct); +define_one_global_ro(turbo_pct); +define_one_global_ro(num_pstates); static struct attribute *intel_pstate_attributes[] = { &no_turbo.attr, &max_perf_pct.attr, &min_perf_pct.attr, + &turbo_pct.attr, + &num_pstates.attr, NULL }; @@ -825,6 +862,7 @@ static const struct x86_cpu_id intel_pstate_cpu_ids[] = { ICPU(0x46, core_params), ICPU(0x47, core_params), ICPU(0x4c, byt_params), + ICPU(0x4e, core_params), ICPU(0x4f, core_params), ICPU(0x56, core_params), {} @@ -887,7 +925,9 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy) if (!policy->cpuinfo.max_freq) return -ENODEV; - if (policy->policy == CPUFREQ_POLICY_PERFORMANCE) { + if (policy->policy == CPUFREQ_POLICY_PERFORMANCE && + policy->max >= policy->cpuinfo.max_freq) { + limits.min_policy_pct = 100; limits.min_perf_pct = 100; limits.min_perf = int_tofp(1); limits.max_policy_pct = 100; @@ -897,8 +937,9 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy) return 0; } - limits.min_perf_pct = (policy->min * 100) / policy->cpuinfo.max_freq; - limits.min_perf_pct = clamp_t(int, limits.min_perf_pct, 0 , 100); + limits.min_policy_pct = (policy->min * 100) / policy->cpuinfo.max_freq; + limits.min_policy_pct = clamp_t(int, limits.min_policy_pct, 0 , 100); + limits.min_perf_pct = max(limits.min_policy_pct, limits.min_sysfs_pct); limits.min_perf = div_fp(int_tofp(limits.min_perf_pct), int_tofp(100)); limits.max_policy_pct = (policy->max * 100) / policy->cpuinfo.max_freq; @@ -978,6 +1019,7 @@ static struct cpufreq_driver intel_pstate_driver = { static int __initdata no_load; static int __initdata no_hwp; +static int __initdata hwp_only; static unsigned int force_load; static int intel_pstate_msrs_not_valid(void) @@ -1175,6 +1217,9 @@ static int __init intel_pstate_init(void) if (cpu_has(c,X86_FEATURE_HWP) && !no_hwp) intel_pstate_hwp_enable(); + if (!hwp_active && hwp_only) + goto out; + rc = cpufreq_register_driver(&intel_pstate_driver); if (rc) goto out; @@ -1209,6 +1254,8 @@ static int __init intel_pstate_setup(char *str) no_hwp = 1; if (!strcmp(str, "force")) force_load = 1; + if (!strcmp(str, "hwp_only")) + hwp_only = 1; return 0; } early_param("intel_pstate", intel_pstate_setup); diff --git a/drivers/cpufreq/ls1x-cpufreq.c b/drivers/cpufreq/ls1x-cpufreq.c index 25fbd6a1..f0913ee 100644 --- a/drivers/cpufreq/ls1x-cpufreq.c +++ b/drivers/cpufreq/ls1x-cpufreq.c @@ -210,7 +210,6 @@ out: static struct platform_driver ls1x_cpufreq_platdrv = { .driver = { .name = "ls1x-cpufreq", - .owner = THIS_MODULE, }, .probe = ls1x_cpufreq_probe, .remove = ls1x_cpufreq_remove, diff --git a/drivers/cpufreq/sfi-cpufreq.c b/drivers/cpufreq/sfi-cpufreq.c new file mode 100644 index 0000000..ffa3389 --- /dev/null +++ b/drivers/cpufreq/sfi-cpufreq.c @@ -0,0 +1,136 @@ +/* + * SFI Performance States Driver + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * Author: Vishwesh M Rudramuni <vishwesh.m.rudramuni@intel.com> + * Author: Srinidhi Kasagar <srinidhi.kasagar@intel.com> + */ + +#include <linux/cpufreq.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/sfi.h> +#include <linux/slab.h> +#include <linux/smp.h> + +#include <asm/msr.h> + +struct cpufreq_frequency_table *freq_table; +static struct sfi_freq_table_entry *sfi_cpufreq_array; +static int num_freq_table_entries; + +static int sfi_parse_freq(struct sfi_table_header *table) +{ + struct sfi_table_simple *sb; + struct sfi_freq_table_entry *pentry; + int totallen; + + sb = (struct sfi_table_simple *)table; + num_freq_table_entries = SFI_GET_NUM_ENTRIES(sb, + struct sfi_freq_table_entry); + if (num_freq_table_entries <= 1) { + pr_err("No p-states discovered\n"); + return -ENODEV; + } + + pentry = (struct sfi_freq_table_entry *)sb->pentry; + totallen = num_freq_table_entries * sizeof(*pentry); + + sfi_cpufreq_array = kzalloc(totallen, GFP_KERNEL); + if (!sfi_cpufreq_array) + return -ENOMEM; + + memcpy(sfi_cpufreq_array, pentry, totallen); + + return 0; +} + +static int sfi_cpufreq_target(struct cpufreq_policy *policy, unsigned int index) +{ + unsigned int next_perf_state = 0; /* Index into perf table */ + u32 lo, hi; + + next_perf_state = policy->freq_table[index].driver_data; + + rdmsr_on_cpu(policy->cpu, MSR_IA32_PERF_CTL, &lo, &hi); + lo = (lo & ~INTEL_PERF_CTL_MASK) | + ((u32) sfi_cpufreq_array[next_perf_state].ctrl_val & + INTEL_PERF_CTL_MASK); + wrmsr_on_cpu(policy->cpu, MSR_IA32_PERF_CTL, lo, hi); + + return 0; +} + +static int sfi_cpufreq_cpu_init(struct cpufreq_policy *policy) +{ + policy->shared_type = CPUFREQ_SHARED_TYPE_HW; + policy->cpuinfo.transition_latency = 100000; /* 100us */ + + return cpufreq_table_validate_and_show(policy, freq_table); +} + +static struct cpufreq_driver sfi_cpufreq_driver = { + .flags = CPUFREQ_CONST_LOOPS, + .verify = cpufreq_generic_frequency_table_verify, + .target_index = sfi_cpufreq_target, + .init = sfi_cpufreq_cpu_init, + .name = "sfi-cpufreq", + .attr = cpufreq_generic_attr, +}; + +static int __init sfi_cpufreq_init(void) +{ + int ret, i; + + /* parse the freq table from SFI */ + ret = sfi_table_parse(SFI_SIG_FREQ, NULL, NULL, sfi_parse_freq); + if (ret) + return ret; + + freq_table = kzalloc(sizeof(*freq_table) * + (num_freq_table_entries + 1), GFP_KERNEL); + if (!freq_table) { + ret = -ENOMEM; + goto err_free_array; + } + + for (i = 0; i < num_freq_table_entries; i++) { + freq_table[i].driver_data = i; + freq_table[i].frequency = sfi_cpufreq_array[i].freq_mhz * 1000; + } + freq_table[i].frequency = CPUFREQ_TABLE_END; + + ret = cpufreq_register_driver(&sfi_cpufreq_driver); + if (ret) + goto err_free_tbl; + + return ret; + +err_free_tbl: + kfree(freq_table); +err_free_array: + kfree(sfi_cpufreq_array); + return ret; +} +late_initcall(sfi_cpufreq_init); + +static void __exit sfi_cpufreq_exit(void) +{ + cpufreq_unregister_driver(&sfi_cpufreq_driver); + kfree(freq_table); + kfree(sfi_cpufreq_array); +} +module_exit(sfi_cpufreq_exit); + +MODULE_AUTHOR("Vishwesh M Rudramuni <vishwesh.m.rudramuni@intel.com>"); +MODULE_DESCRIPTION("SFI Performance-States Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/cpuidle/cpuidle-big_little.c b/drivers/cpuidle/cpuidle-big_little.c index e3e225f..40c34fa 100644 --- a/drivers/cpuidle/cpuidle-big_little.c +++ b/drivers/cpuidle/cpuidle-big_little.c @@ -182,6 +182,10 @@ static int __init bl_idle_init(void) */ if (!of_match_node(compatible_machine_match, root)) return -ENODEV; + + if (!mcpm_is_available()) + return -EUNATCH; + /* * For now the differentiation between little and big cores * is based on the part number. A7 cores are considered little diff --git a/drivers/devfreq/Kconfig b/drivers/devfreq/Kconfig index 3891f67..64281bb 100644 --- a/drivers/devfreq/Kconfig +++ b/drivers/devfreq/Kconfig @@ -88,4 +88,16 @@ config ARM_EXYNOS5_BUS_DEVFREQ It reads PPMU counters of memory controllers and adjusts the operating frequencies and voltages with OPP support. +config ARM_TEGRA_DEVFREQ + tristate "Tegra DEVFREQ Driver" + depends on ARCH_TEGRA_124_SOC + select DEVFREQ_GOV_SIMPLE_ONDEMAND + select PM_OPP + help + This adds the DEVFREQ driver for the Tegra family of SoCs. + It reads ACTMON counters of memory controllers and adjusts the + operating frequencies and voltages with OPP support. + +source "drivers/devfreq/event/Kconfig" + endif # PM_DEVFREQ diff --git a/drivers/devfreq/Makefile b/drivers/devfreq/Makefile index 16138c9..5134f9e 100644 --- a/drivers/devfreq/Makefile +++ b/drivers/devfreq/Makefile @@ -1,4 +1,5 @@ obj-$(CONFIG_PM_DEVFREQ) += devfreq.o +obj-$(CONFIG_PM_DEVFREQ_EVENT) += devfreq-event.o obj-$(CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND) += governor_simpleondemand.o obj-$(CONFIG_DEVFREQ_GOV_PERFORMANCE) += governor_performance.o obj-$(CONFIG_DEVFREQ_GOV_POWERSAVE) += governor_powersave.o @@ -7,3 +8,7 @@ obj-$(CONFIG_DEVFREQ_GOV_USERSPACE) += governor_userspace.o # DEVFREQ Drivers obj-$(CONFIG_ARM_EXYNOS4_BUS_DEVFREQ) += exynos/ obj-$(CONFIG_ARM_EXYNOS5_BUS_DEVFREQ) += exynos/ +obj-$(CONFIG_ARM_TEGRA_DEVFREQ) += tegra-devfreq.o + +# DEVFREQ Event Drivers +obj-$(CONFIG_PM_DEVFREQ_EVENT) += event/ diff --git a/drivers/devfreq/devfreq-event.c b/drivers/devfreq/devfreq-event.c new file mode 100644 index 0000000..f304a02 --- /dev/null +++ b/drivers/devfreq/devfreq-event.c @@ -0,0 +1,494 @@ +/* + * devfreq-event: a framework to provide raw data and events of devfreq devices + * + * Copyright (C) 2015 Samsung Electronics + * Author: Chanwoo Choi <cw00.choi@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This driver is based on drivers/devfreq/devfreq.c. + */ + +#include <linux/devfreq-event.h> +#include <linux/kernel.h> +#include <linux/err.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/list.h> +#include <linux/of.h> + +static struct class *devfreq_event_class; + +/* The list of all devfreq event list */ +static LIST_HEAD(devfreq_event_list); +static DEFINE_MUTEX(devfreq_event_list_lock); + +#define to_devfreq_event(DEV) container_of(DEV, struct devfreq_event_dev, dev) + +/** + * devfreq_event_enable_edev() - Enable the devfreq-event dev and increase + * the enable_count of devfreq-event dev. + * @edev : the devfreq-event device + * + * Note that this function increase the enable_count and enable the + * devfreq-event device. The devfreq-event device should be enabled before + * using it by devfreq device. + */ +int devfreq_event_enable_edev(struct devfreq_event_dev *edev) +{ + int ret = 0; + + if (!edev || !edev->desc) + return -EINVAL; + + mutex_lock(&edev->lock); + if (edev->desc->ops && edev->desc->ops->enable + && edev->enable_count == 0) { + ret = edev->desc->ops->enable(edev); + if (ret < 0) + goto err; + } + edev->enable_count++; +err: + mutex_unlock(&edev->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(devfreq_event_enable_edev); + +/** + * devfreq_event_disable_edev() - Disable the devfreq-event dev and decrease + * the enable_count of the devfreq-event dev. + * @edev : the devfreq-event device + * + * Note that this function decrease the enable_count and disable the + * devfreq-event device. After the devfreq-event device is disabled, + * devfreq device can't use the devfreq-event device for get/set/reset + * operations. + */ +int devfreq_event_disable_edev(struct devfreq_event_dev *edev) +{ + int ret = 0; + + if (!edev || !edev->desc) + return -EINVAL; + + mutex_lock(&edev->lock); + if (edev->enable_count <= 0) { + dev_warn(&edev->dev, "unbalanced enable_count\n"); + ret = -EIO; + goto err; + } + + if (edev->desc->ops && edev->desc->ops->disable + && edev->enable_count == 1) { + ret = edev->desc->ops->disable(edev); + if (ret < 0) + goto err; + } + edev->enable_count--; +err: + mutex_unlock(&edev->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(devfreq_event_disable_edev); + +/** + * devfreq_event_is_enabled() - Check whether devfreq-event dev is enabled or + * not. + * @edev : the devfreq-event device + * + * Note that this function check whether devfreq-event dev is enabled or not. + * If return true, the devfreq-event dev is enabeld. If return false, the + * devfreq-event dev is disabled. + */ +bool devfreq_event_is_enabled(struct devfreq_event_dev *edev) +{ + bool enabled = false; + + if (!edev || !edev->desc) + return enabled; + + mutex_lock(&edev->lock); + + if (edev->enable_count > 0) + enabled = true; + + mutex_unlock(&edev->lock); + + return enabled; +} +EXPORT_SYMBOL_GPL(devfreq_event_is_enabled); + +/** + * devfreq_event_set_event() - Set event to devfreq-event dev to start. + * @edev : the devfreq-event device + * + * Note that this function set the event to the devfreq-event device to start + * for getting the event data which could be various event type. + */ +int devfreq_event_set_event(struct devfreq_event_dev *edev) +{ + int ret; + + if (!edev || !edev->desc) + return -EINVAL; + + if (!edev->desc->ops || !edev->desc->ops->set_event) + return -EINVAL; + + if (!devfreq_event_is_enabled(edev)) + return -EPERM; + + mutex_lock(&edev->lock); + ret = edev->desc->ops->set_event(edev); + mutex_unlock(&edev->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(devfreq_event_set_event); + +/** + * devfreq_event_get_event() - Get {load|total}_count from devfreq-event dev. + * @edev : the devfreq-event device + * @edata : the calculated data of devfreq-event device + * + * Note that this function get the calculated event data from devfreq-event dev + * after stoping the progress of whole sequence of devfreq-event dev. + */ +int devfreq_event_get_event(struct devfreq_event_dev *edev, + struct devfreq_event_data *edata) +{ + int ret; + + if (!edev || !edev->desc) + return -EINVAL; + + if (!edev->desc->ops || !edev->desc->ops->get_event) + return -EINVAL; + + if (!devfreq_event_is_enabled(edev)) + return -EINVAL; + + edata->total_count = edata->load_count = 0; + + mutex_lock(&edev->lock); + ret = edev->desc->ops->get_event(edev, edata); + if (ret < 0) + edata->total_count = edata->load_count = 0; + mutex_unlock(&edev->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(devfreq_event_get_event); + +/** + * devfreq_event_reset_event() - Reset all opeations of devfreq-event dev. + * @edev : the devfreq-event device + * + * Note that this function stop all operations of devfreq-event dev and reset + * the current event data to make the devfreq-event device into initial state. + */ +int devfreq_event_reset_event(struct devfreq_event_dev *edev) +{ + int ret = 0; + + if (!edev || !edev->desc) + return -EINVAL; + + if (!devfreq_event_is_enabled(edev)) + return -EPERM; + + mutex_lock(&edev->lock); + if (edev->desc->ops && edev->desc->ops->reset) + ret = edev->desc->ops->reset(edev); + mutex_unlock(&edev->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(devfreq_event_reset_event); + +/** + * devfreq_event_get_edev_by_phandle() - Get the devfreq-event dev from + * devicetree. + * @dev : the pointer to the given device + * @index : the index into list of devfreq-event device + * + * Note that this function return the pointer of devfreq-event device. + */ +struct devfreq_event_dev *devfreq_event_get_edev_by_phandle(struct device *dev, + int index) +{ + struct device_node *node; + struct devfreq_event_dev *edev; + + if (!dev->of_node) { + dev_err(dev, "device does not have a device node entry\n"); + return ERR_PTR(-EINVAL); + } + + node = of_parse_phandle(dev->of_node, "devfreq-events", index); + if (!node) { + dev_err(dev, "failed to get phandle in %s node\n", + dev->of_node->full_name); + return ERR_PTR(-ENODEV); + } + + mutex_lock(&devfreq_event_list_lock); + list_for_each_entry(edev, &devfreq_event_list, node) { + if (!strcmp(edev->desc->name, node->name)) + goto out; + } + edev = NULL; +out: + mutex_unlock(&devfreq_event_list_lock); + + if (!edev) { + dev_err(dev, "unable to get devfreq-event device : %s\n", + node->name); + of_node_put(node); + return ERR_PTR(-ENODEV); + } + + of_node_put(node); + + return edev; +} +EXPORT_SYMBOL_GPL(devfreq_event_get_edev_by_phandle); + +/** + * devfreq_event_get_edev_count() - Get the count of devfreq-event dev + * @dev : the pointer to the given device + * + * Note that this function return the count of devfreq-event devices. + */ +int devfreq_event_get_edev_count(struct device *dev) +{ + int count; + + if (!dev->of_node) { + dev_err(dev, "device does not have a device node entry\n"); + return -EINVAL; + } + + count = of_property_count_elems_of_size(dev->of_node, "devfreq-events", + sizeof(u32)); + if (count < 0 ) { + dev_err(dev, + "failed to get the count of devfreq-event in %s node\n", + dev->of_node->full_name); + return count; + } + + return count; +} +EXPORT_SYMBOL_GPL(devfreq_event_get_edev_count); + +static void devfreq_event_release_edev(struct device *dev) +{ + struct devfreq_event_dev *edev = to_devfreq_event(dev); + + kfree(edev); +} + +/** + * devfreq_event_add_edev() - Add new devfreq-event device. + * @dev : the device owning the devfreq-event device being created + * @desc : the devfreq-event device's decriptor which include essential + * data for devfreq-event device. + * + * Note that this function add new devfreq-event device to devfreq-event class + * list and register the device of the devfreq-event device. + */ +struct devfreq_event_dev *devfreq_event_add_edev(struct device *dev, + struct devfreq_event_desc *desc) +{ + struct devfreq_event_dev *edev; + static atomic_t event_no = ATOMIC_INIT(0); + int ret; + + if (!dev || !desc) + return ERR_PTR(-EINVAL); + + if (!desc->name || !desc->ops) + return ERR_PTR(-EINVAL); + + if (!desc->ops->set_event || !desc->ops->get_event) + return ERR_PTR(-EINVAL); + + edev = kzalloc(sizeof(struct devfreq_event_dev), GFP_KERNEL); + if (!edev) + return ERR_PTR(-ENOMEM); + + mutex_init(&edev->lock); + edev->desc = desc; + edev->enable_count = 0; + edev->dev.parent = dev; + edev->dev.class = devfreq_event_class; + edev->dev.release = devfreq_event_release_edev; + + dev_set_name(&edev->dev, "event.%d", atomic_inc_return(&event_no) - 1); + ret = device_register(&edev->dev); + if (ret < 0) { + put_device(&edev->dev); + return ERR_PTR(ret); + } + dev_set_drvdata(&edev->dev, edev); + + INIT_LIST_HEAD(&edev->node); + + mutex_lock(&devfreq_event_list_lock); + list_add(&edev->node, &devfreq_event_list); + mutex_unlock(&devfreq_event_list_lock); + + return edev; +} +EXPORT_SYMBOL_GPL(devfreq_event_add_edev); + +/** + * devfreq_event_remove_edev() - Remove the devfreq-event device registered. + * @dev : the devfreq-event device + * + * Note that this function remove the registered devfreq-event device. + */ +int devfreq_event_remove_edev(struct devfreq_event_dev *edev) +{ + if (!edev) + return -EINVAL; + + WARN_ON(edev->enable_count); + + mutex_lock(&devfreq_event_list_lock); + list_del(&edev->node); + mutex_unlock(&devfreq_event_list_lock); + + device_unregister(&edev->dev); + + return 0; +} +EXPORT_SYMBOL_GPL(devfreq_event_remove_edev); + +static int devm_devfreq_event_match(struct device *dev, void *res, void *data) +{ + struct devfreq_event_dev **r = res; + + if (WARN_ON(!r || !*r)) + return 0; + + return *r == data; +} + +static void devm_devfreq_event_release(struct device *dev, void *res) +{ + devfreq_event_remove_edev(*(struct devfreq_event_dev **)res); +} + +/** + * devm_devfreq_event_add_edev() - Resource-managed devfreq_event_add_edev() + * @dev : the device owning the devfreq-event device being created + * @desc : the devfreq-event device's decriptor which include essential + * data for devfreq-event device. + * + * Note that this function manages automatically the memory of devfreq-event + * device using device resource management and simplify the free operation + * for memory of devfreq-event device. + */ +struct devfreq_event_dev *devm_devfreq_event_add_edev(struct device *dev, + struct devfreq_event_desc *desc) +{ + struct devfreq_event_dev **ptr, *edev; + + ptr = devres_alloc(devm_devfreq_event_release, sizeof(*ptr), GFP_KERNEL); + if (!ptr) + return ERR_PTR(-ENOMEM); + + edev = devfreq_event_add_edev(dev, desc); + if (IS_ERR(edev)) { + devres_free(ptr); + return ERR_PTR(-ENOMEM); + } + + *ptr = edev; + devres_add(dev, ptr); + + return edev; +} +EXPORT_SYMBOL_GPL(devm_devfreq_event_add_edev); + +/** + * devm_devfreq_event_remove_edev()- Resource-managed devfreq_event_remove_edev() + * @dev : the device owning the devfreq-event device being created + * @edev : the devfreq-event device + * + * Note that this function manages automatically the memory of devfreq-event + * device using device resource management. + */ +void devm_devfreq_event_remove_edev(struct device *dev, + struct devfreq_event_dev *edev) +{ + WARN_ON(devres_release(dev, devm_devfreq_event_release, + devm_devfreq_event_match, edev)); +} +EXPORT_SYMBOL_GPL(devm_devfreq_event_remove_edev); + +/* + * Device attributes for devfreq-event class. + */ +static ssize_t name_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct devfreq_event_dev *edev = to_devfreq_event(dev); + + if (!edev || !edev->desc) + return -EINVAL; + + return sprintf(buf, "%s\n", edev->desc->name); +} +static DEVICE_ATTR_RO(name); + +static ssize_t enable_count_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct devfreq_event_dev *edev = to_devfreq_event(dev); + + if (!edev || !edev->desc) + return -EINVAL; + + return sprintf(buf, "%d\n", edev->enable_count); +} +static DEVICE_ATTR_RO(enable_count); + +static struct attribute *devfreq_event_attrs[] = { + &dev_attr_name.attr, + &dev_attr_enable_count.attr, + NULL, +}; +ATTRIBUTE_GROUPS(devfreq_event); + +static int __init devfreq_event_init(void) +{ + devfreq_event_class = class_create(THIS_MODULE, "devfreq-event"); + if (IS_ERR(devfreq_event_class)) { + pr_err("%s: couldn't create class\n", __FILE__); + return PTR_ERR(devfreq_event_class); + } + + devfreq_event_class->dev_groups = devfreq_event_groups; + + return 0; +} +subsys_initcall(devfreq_event_init); + +static void __exit devfreq_event_exit(void) +{ + class_destroy(devfreq_event_class); +} +module_exit(devfreq_event_exit); + +MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>"); +MODULE_DESCRIPTION("DEVFREQ-Event class support"); +MODULE_LICENSE("GPL"); diff --git a/drivers/devfreq/event/Kconfig b/drivers/devfreq/event/Kconfig new file mode 100644 index 0000000..a11720a --- /dev/null +++ b/drivers/devfreq/event/Kconfig @@ -0,0 +1,25 @@ +menuconfig PM_DEVFREQ_EVENT + bool "DEVFREQ-Event device Support" + help + The devfreq-event device provide the raw data and events which + indicate the current state of devfreq-event device. The provided + data from devfreq-event device is used to monitor the state of + device and determine the suitable size of resource to reduce the + wasted resource. + + The devfreq-event device can support the various type of events + (e.g., raw data, utilization, latency, bandwidth). The events + may be used by devfreq governor and other subsystem. + +if PM_DEVFREQ_EVENT + +config DEVFREQ_EVENT_EXYNOS_PPMU + bool "EXYNOS PPMU (Platform Performance Monitoring Unit) DEVFREQ event Driver" + depends on ARCH_EXYNOS + select PM_OPP + help + This add the devfreq-event driver for Exynos SoC. It provides PPMU + (Platform Performance Monitoring Unit) counters to estimate the + utilization of each module. + +endif # PM_DEVFREQ_EVENT diff --git a/drivers/devfreq/event/Makefile b/drivers/devfreq/event/Makefile new file mode 100644 index 0000000..be146ea --- /dev/null +++ b/drivers/devfreq/event/Makefile @@ -0,0 +1,2 @@ +# Exynos DEVFREQ Event Drivers +obj-$(CONFIG_DEVFREQ_EVENT_EXYNOS_PPMU) += exynos-ppmu.o diff --git a/drivers/devfreq/event/exynos-ppmu.c b/drivers/devfreq/event/exynos-ppmu.c new file mode 100644 index 0000000..135be0a --- /dev/null +++ b/drivers/devfreq/event/exynos-ppmu.c @@ -0,0 +1,374 @@ +/* + * exynos_ppmu.c - EXYNOS PPMU (Platform Performance Monitoring Unit) support + * + * Copyright (c) 2014 Samsung Electronics Co., Ltd. + * Author : Chanwoo Choi <cw00.choi@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This driver is based on drivers/devfreq/exynos/exynos_ppmu.c + */ + +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/of_address.h> +#include <linux/platform_device.h> +#include <linux/suspend.h> +#include <linux/devfreq-event.h> + +#include "exynos-ppmu.h" + +struct exynos_ppmu_data { + void __iomem *base; + struct clk *clk; +}; + +struct exynos_ppmu { + struct devfreq_event_dev **edev; + struct devfreq_event_desc *desc; + unsigned int num_events; + + struct device *dev; + struct mutex lock; + + struct exynos_ppmu_data ppmu; +}; + +#define PPMU_EVENT(name) \ + { "ppmu-event0-"#name, PPMU_PMNCNT0 }, \ + { "ppmu-event1-"#name, PPMU_PMNCNT1 }, \ + { "ppmu-event2-"#name, PPMU_PMNCNT2 }, \ + { "ppmu-event3-"#name, PPMU_PMNCNT3 } + +struct __exynos_ppmu_events { + char *name; + int id; +} ppmu_events[] = { + /* For Exynos3250, Exynos4 and Exynos5260 */ + PPMU_EVENT(g3d), + PPMU_EVENT(fsys), + + /* For Exynos4 SoCs and Exynos3250 */ + PPMU_EVENT(dmc0), + PPMU_EVENT(dmc1), + PPMU_EVENT(cpu), + PPMU_EVENT(rightbus), + PPMU_EVENT(leftbus), + PPMU_EVENT(lcd0), + PPMU_EVENT(camif), + + /* Only for Exynos3250 and Exynos5260 */ + PPMU_EVENT(mfc), + + /* Only for Exynos4 SoCs */ + PPMU_EVENT(mfc-left), + PPMU_EVENT(mfc-right), + + /* Only for Exynos5260 SoCs */ + PPMU_EVENT(drex0-s0), + PPMU_EVENT(drex0-s1), + PPMU_EVENT(drex1-s0), + PPMU_EVENT(drex1-s1), + PPMU_EVENT(eagle), + PPMU_EVENT(kfc), + PPMU_EVENT(isp), + PPMU_EVENT(fimc), + PPMU_EVENT(gscl), + PPMU_EVENT(mscl), + PPMU_EVENT(fimd0x), + PPMU_EVENT(fimd1x), + { /* sentinel */ }, +}; + +static int exynos_ppmu_find_ppmu_id(struct devfreq_event_dev *edev) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(ppmu_events); i++) + if (!strcmp(edev->desc->name, ppmu_events[i].name)) + return ppmu_events[i].id; + + return -EINVAL; +} + +static int exynos_ppmu_disable(struct devfreq_event_dev *edev) +{ + struct exynos_ppmu *info = devfreq_event_get_drvdata(edev); + u32 pmnc; + + /* Disable all counters */ + __raw_writel(PPMU_CCNT_MASK | + PPMU_PMCNT0_MASK | + PPMU_PMCNT1_MASK | + PPMU_PMCNT2_MASK | + PPMU_PMCNT3_MASK, + info->ppmu.base + PPMU_CNTENC); + + /* Disable PPMU */ + pmnc = __raw_readl(info->ppmu.base + PPMU_PMNC); + pmnc &= ~PPMU_PMNC_ENABLE_MASK; + __raw_writel(pmnc, info->ppmu.base + PPMU_PMNC); + + return 0; +} + +static int exynos_ppmu_set_event(struct devfreq_event_dev *edev) +{ + struct exynos_ppmu *info = devfreq_event_get_drvdata(edev); + int id = exynos_ppmu_find_ppmu_id(edev); + u32 pmnc, cntens; + + if (id < 0) + return id; + + /* Enable specific counter */ + cntens = __raw_readl(info->ppmu.base + PPMU_CNTENS); + cntens |= (PPMU_CCNT_MASK | (PPMU_ENABLE << id)); + __raw_writel(cntens, info->ppmu.base + PPMU_CNTENS); + + /* Set the event of Read/Write data count */ + __raw_writel(PPMU_RO_DATA_CNT | PPMU_WO_DATA_CNT, + info->ppmu.base + PPMU_BEVTxSEL(id)); + + /* Reset cycle counter/performance counter and enable PPMU */ + pmnc = __raw_readl(info->ppmu.base + PPMU_PMNC); + pmnc &= ~(PPMU_PMNC_ENABLE_MASK + | PPMU_PMNC_COUNTER_RESET_MASK + | PPMU_PMNC_CC_RESET_MASK); + pmnc |= (PPMU_ENABLE << PPMU_PMNC_ENABLE_SHIFT); + pmnc |= (PPMU_ENABLE << PPMU_PMNC_COUNTER_RESET_SHIFT); + pmnc |= (PPMU_ENABLE << PPMU_PMNC_CC_RESET_SHIFT); + __raw_writel(pmnc, info->ppmu.base + PPMU_PMNC); + + return 0; +} + +static int exynos_ppmu_get_event(struct devfreq_event_dev *edev, + struct devfreq_event_data *edata) +{ + struct exynos_ppmu *info = devfreq_event_get_drvdata(edev); + int id = exynos_ppmu_find_ppmu_id(edev); + u32 pmnc, cntenc; + + if (id < 0) + return -EINVAL; + + /* Disable PPMU */ + pmnc = __raw_readl(info->ppmu.base + PPMU_PMNC); + pmnc &= ~PPMU_PMNC_ENABLE_MASK; + __raw_writel(pmnc, info->ppmu.base + PPMU_PMNC); + + /* Read cycle count */ + edata->total_count = __raw_readl(info->ppmu.base + PPMU_CCNT); + + /* Read performance count */ + switch (id) { + case PPMU_PMNCNT0: + case PPMU_PMNCNT1: + case PPMU_PMNCNT2: + edata->load_count + = __raw_readl(info->ppmu.base + PPMU_PMNCT(id)); + break; + case PPMU_PMNCNT3: + edata->load_count = + ((__raw_readl(info->ppmu.base + PPMU_PMCNT3_HIGH) << 8) + | __raw_readl(info->ppmu.base + PPMU_PMCNT3_LOW)); + break; + default: + return -EINVAL; + } + + /* Disable specific counter */ + cntenc = __raw_readl(info->ppmu.base + PPMU_CNTENC); + cntenc |= (PPMU_CCNT_MASK | (PPMU_ENABLE << id)); + __raw_writel(cntenc, info->ppmu.base + PPMU_CNTENC); + + dev_dbg(&edev->dev, "%s (event: %ld/%ld)\n", edev->desc->name, + edata->load_count, edata->total_count); + + return 0; +} + +static struct devfreq_event_ops exynos_ppmu_ops = { + .disable = exynos_ppmu_disable, + .set_event = exynos_ppmu_set_event, + .get_event = exynos_ppmu_get_event, +}; + +static int of_get_devfreq_events(struct device_node *np, + struct exynos_ppmu *info) +{ + struct devfreq_event_desc *desc; + struct device *dev = info->dev; + struct device_node *events_np, *node; + int i, j, count; + + events_np = of_get_child_by_name(np, "events"); + if (!events_np) { + dev_err(dev, + "failed to get child node of devfreq-event devices\n"); + return -EINVAL; + } + + count = of_get_child_count(events_np); + desc = devm_kzalloc(dev, sizeof(*desc) * count, GFP_KERNEL); + if (!desc) + return -ENOMEM; + info->num_events = count; + + j = 0; + for_each_child_of_node(events_np, node) { + for (i = 0; i < ARRAY_SIZE(ppmu_events); i++) { + if (!ppmu_events[i].name) + continue; + + if (!of_node_cmp(node->name, ppmu_events[i].name)) + break; + } + + if (i == ARRAY_SIZE(ppmu_events)) { + dev_warn(dev, + "don't know how to configure events : %s\n", + node->name); + continue; + } + + desc[j].ops = &exynos_ppmu_ops; + desc[j].driver_data = info; + + of_property_read_string(node, "event-name", &desc[j].name); + + j++; + + of_node_put(node); + } + info->desc = desc; + + of_node_put(events_np); + + return 0; +} + +static int exynos_ppmu_parse_dt(struct exynos_ppmu *info) +{ + struct device *dev = info->dev; + struct device_node *np = dev->of_node; + int ret = 0; + + if (!np) { + dev_err(dev, "failed to find devicetree node\n"); + return -EINVAL; + } + + /* Maps the memory mapped IO to control PPMU register */ + info->ppmu.base = of_iomap(np, 0); + if (IS_ERR_OR_NULL(info->ppmu.base)) { + dev_err(dev, "failed to map memory region\n"); + return -ENOMEM; + } + + info->ppmu.clk = devm_clk_get(dev, "ppmu"); + if (IS_ERR(info->ppmu.clk)) { + info->ppmu.clk = NULL; + dev_warn(dev, "cannot get PPMU clock\n"); + } + + ret = of_get_devfreq_events(np, info); + if (ret < 0) { + dev_err(dev, "failed to parse exynos ppmu dt node\n"); + goto err; + } + + return 0; + +err: + iounmap(info->ppmu.base); + + return ret; +} + +static int exynos_ppmu_probe(struct platform_device *pdev) +{ + struct exynos_ppmu *info; + struct devfreq_event_dev **edev; + struct devfreq_event_desc *desc; + int i, ret = 0, size; + + info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + mutex_init(&info->lock); + info->dev = &pdev->dev; + + /* Parse dt data to get resource */ + ret = exynos_ppmu_parse_dt(info); + if (ret < 0) { + dev_err(&pdev->dev, + "failed to parse devicetree for resource\n"); + return ret; + } + desc = info->desc; + + size = sizeof(struct devfreq_event_dev *) * info->num_events; + info->edev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); + if (!info->edev) { + dev_err(&pdev->dev, + "failed to allocate memory devfreq-event devices\n"); + return -ENOMEM; + } + edev = info->edev; + platform_set_drvdata(pdev, info); + + for (i = 0; i < info->num_events; i++) { + edev[i] = devm_devfreq_event_add_edev(&pdev->dev, &desc[i]); + if (IS_ERR(edev)) { + ret = PTR_ERR(edev); + dev_err(&pdev->dev, + "failed to add devfreq-event device\n"); + goto err; + } + } + + clk_prepare_enable(info->ppmu.clk); + + return 0; +err: + iounmap(info->ppmu.base); + + return ret; +} + +static int exynos_ppmu_remove(struct platform_device *pdev) +{ + struct exynos_ppmu *info = platform_get_drvdata(pdev); + + clk_disable_unprepare(info->ppmu.clk); + iounmap(info->ppmu.base); + + return 0; +} + +static struct of_device_id exynos_ppmu_id_match[] = { + { .compatible = "samsung,exynos-ppmu", }, + { /* sentinel */ }, +}; + +static struct platform_driver exynos_ppmu_driver = { + .probe = exynos_ppmu_probe, + .remove = exynos_ppmu_remove, + .driver = { + .name = "exynos-ppmu", + .of_match_table = exynos_ppmu_id_match, + }, +}; +module_platform_driver(exynos_ppmu_driver); + +MODULE_DESCRIPTION("Exynos PPMU(Platform Performance Monitoring Unit) driver"); +MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/devfreq/event/exynos-ppmu.h b/drivers/devfreq/event/exynos-ppmu.h new file mode 100644 index 0000000..4e831d4 --- /dev/null +++ b/drivers/devfreq/event/exynos-ppmu.h @@ -0,0 +1,93 @@ +/* + * exynos_ppmu.h - EXYNOS PPMU header file + * + * Copyright (c) 2015 Samsung Electronics Co., Ltd. + * Author : Chanwoo Choi <cw00.choi@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __EXYNOS_PPMU_H__ +#define __EXYNOS_PPMU_H__ + +enum ppmu_state { + PPMU_DISABLE = 0, + PPMU_ENABLE, +}; + +enum ppmu_counter { + PPMU_PMNCNT0 = 0, + PPMU_PMNCNT1, + PPMU_PMNCNT2, + PPMU_PMNCNT3, + + PPMU_PMNCNT_MAX, +}; + +enum ppmu_event_type { + PPMU_RO_BUSY_CYCLE_CNT = 0x0, + PPMU_WO_BUSY_CYCLE_CNT = 0x1, + PPMU_RW_BUSY_CYCLE_CNT = 0x2, + PPMU_RO_REQUEST_CNT = 0x3, + PPMU_WO_REQUEST_CNT = 0x4, + PPMU_RO_DATA_CNT = 0x5, + PPMU_WO_DATA_CNT = 0x6, + PPMU_RO_LATENCY = 0x12, + PPMU_WO_LATENCY = 0x16, +}; + +enum ppmu_reg { + /* PPC control register */ + PPMU_PMNC = 0x00, + PPMU_CNTENS = 0x10, + PPMU_CNTENC = 0x20, + PPMU_INTENS = 0x30, + PPMU_INTENC = 0x40, + PPMU_FLAG = 0x50, + + /* Cycle Counter and Performance Event Counter Register */ + PPMU_CCNT = 0x100, + PPMU_PMCNT0 = 0x110, + PPMU_PMCNT1 = 0x120, + PPMU_PMCNT2 = 0x130, + PPMU_PMCNT3_HIGH = 0x140, + PPMU_PMCNT3_LOW = 0x150, + + /* Bus Event Generator */ + PPMU_BEVT0SEL = 0x1000, + PPMU_BEVT1SEL = 0x1100, + PPMU_BEVT2SEL = 0x1200, + PPMU_BEVT3SEL = 0x1300, + PPMU_COUNTER_RESET = 0x1810, + PPMU_READ_OVERFLOW_CNT = 0x1810, + PPMU_READ_UNDERFLOW_CNT = 0x1814, + PPMU_WRITE_OVERFLOW_CNT = 0x1850, + PPMU_WRITE_UNDERFLOW_CNT = 0x1854, + PPMU_READ_PENDING_CNT = 0x1880, + PPMU_WRITE_PENDING_CNT = 0x1884 +}; + +/* PMNC register */ +#define PPMU_PMNC_CC_RESET_SHIFT 2 +#define PPMU_PMNC_COUNTER_RESET_SHIFT 1 +#define PPMU_PMNC_ENABLE_SHIFT 0 +#define PPMU_PMNC_START_MODE_MASK BIT(16) +#define PPMU_PMNC_CC_DIVIDER_MASK BIT(3) +#define PPMU_PMNC_CC_RESET_MASK BIT(2) +#define PPMU_PMNC_COUNTER_RESET_MASK BIT(1) +#define PPMU_PMNC_ENABLE_MASK BIT(0) + +/* CNTENS/CNTENC/INTENS/INTENC/FLAG register */ +#define PPMU_CCNT_MASK BIT(31) +#define PPMU_PMCNT3_MASK BIT(3) +#define PPMU_PMCNT2_MASK BIT(2) +#define PPMU_PMCNT1_MASK BIT(1) +#define PPMU_PMCNT0_MASK BIT(0) + +/* PPMU_PMNCTx/PPMU_BETxSEL registers */ +#define PPMU_PMNCT(x) (PPMU_PMCNT0 + (0x10 * x)) +#define PPMU_BEVTxSEL(x) (PPMU_BEVT0SEL + (0x100 * x)) + +#endif /* __EXYNOS_PPMU_H__ */ diff --git a/drivers/devfreq/tegra-devfreq.c b/drivers/devfreq/tegra-devfreq.c new file mode 100644 index 0000000..3479096 --- /dev/null +++ b/drivers/devfreq/tegra-devfreq.c @@ -0,0 +1,718 @@ +/* + * A devfreq driver for NVIDIA Tegra SoCs + * + * Copyright (c) 2014 NVIDIA CORPORATION. All rights reserved. + * Copyright (C) 2014 Google, Inc + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + */ + +#include <linux/clk.h> +#include <linux/cpufreq.h> +#include <linux/devfreq.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/pm_opp.h> +#include <linux/reset.h> + +#include "governor.h" + +#define ACTMON_GLB_STATUS 0x0 +#define ACTMON_GLB_PERIOD_CTRL 0x4 + +#define ACTMON_DEV_CTRL 0x0 +#define ACTMON_DEV_CTRL_K_VAL_SHIFT 10 +#define ACTMON_DEV_CTRL_ENB_PERIODIC BIT(18) +#define ACTMON_DEV_CTRL_AVG_BELOW_WMARK_EN BIT(20) +#define ACTMON_DEV_CTRL_AVG_ABOVE_WMARK_EN BIT(21) +#define ACTMON_DEV_CTRL_CONSECUTIVE_BELOW_WMARK_NUM_SHIFT 23 +#define ACTMON_DEV_CTRL_CONSECUTIVE_ABOVE_WMARK_NUM_SHIFT 26 +#define ACTMON_DEV_CTRL_CONSECUTIVE_BELOW_WMARK_EN BIT(29) +#define ACTMON_DEV_CTRL_CONSECUTIVE_ABOVE_WMARK_EN BIT(30) +#define ACTMON_DEV_CTRL_ENB BIT(31) + +#define ACTMON_DEV_UPPER_WMARK 0x4 +#define ACTMON_DEV_LOWER_WMARK 0x8 +#define ACTMON_DEV_INIT_AVG 0xc +#define ACTMON_DEV_AVG_UPPER_WMARK 0x10 +#define ACTMON_DEV_AVG_LOWER_WMARK 0x14 +#define ACTMON_DEV_COUNT_WEIGHT 0x18 +#define ACTMON_DEV_AVG_COUNT 0x20 +#define ACTMON_DEV_INTR_STATUS 0x24 + +#define ACTMON_INTR_STATUS_CLEAR 0xffffffff + +#define ACTMON_DEV_INTR_CONSECUTIVE_UPPER BIT(31) +#define ACTMON_DEV_INTR_CONSECUTIVE_LOWER BIT(30) + +#define ACTMON_ABOVE_WMARK_WINDOW 1 +#define ACTMON_BELOW_WMARK_WINDOW 3 +#define ACTMON_BOOST_FREQ_STEP 16000 + +/* activity counter is incremented every 256 memory transactions, and each + * transaction takes 4 EMC clocks for Tegra124; So the COUNT_WEIGHT is + * 4 * 256 = 1024. + */ +#define ACTMON_COUNT_WEIGHT 0x400 + +/* + * ACTMON_AVERAGE_WINDOW_LOG2: default value for @DEV_CTRL_K_VAL, which + * translates to 2 ^ (K_VAL + 1). ex: 2 ^ (6 + 1) = 128 + */ +#define ACTMON_AVERAGE_WINDOW_LOG2 6 +#define ACTMON_SAMPLING_PERIOD 12 /* ms */ +#define ACTMON_DEFAULT_AVG_BAND 6 /* 1/10 of % */ + +#define KHZ 1000 + +/* Assume that the bus is saturated if the utilization is 25% */ +#define BUS_SATURATION_RATIO 25 + +/** + * struct tegra_devfreq_device_config - configuration specific to an ACTMON + * device + * + * Coefficients and thresholds are in % + */ +struct tegra_devfreq_device_config { + u32 offset; + u32 irq_mask; + + unsigned int boost_up_coeff; + unsigned int boost_down_coeff; + unsigned int boost_up_threshold; + unsigned int boost_down_threshold; + u32 avg_dependency_threshold; +}; + +enum tegra_actmon_device { + MCALL = 0, + MCCPU, +}; + +static struct tegra_devfreq_device_config actmon_device_configs[] = { + { + /* MCALL */ + .offset = 0x1c0, + .irq_mask = 1 << 26, + .boost_up_coeff = 200, + .boost_down_coeff = 50, + .boost_up_threshold = 60, + .boost_down_threshold = 40, + }, + { + /* MCCPU */ + .offset = 0x200, + .irq_mask = 1 << 25, + .boost_up_coeff = 800, + .boost_down_coeff = 90, + .boost_up_threshold = 27, + .boost_down_threshold = 10, + .avg_dependency_threshold = 50000, + }, +}; + +/** + * struct tegra_devfreq_device - state specific to an ACTMON device + * + * Frequencies are in kHz. + */ +struct tegra_devfreq_device { + const struct tegra_devfreq_device_config *config; + + void __iomem *regs; + u32 avg_band_freq; + u32 avg_count; + + unsigned long target_freq; + unsigned long boost_freq; +}; + +struct tegra_devfreq { + struct devfreq *devfreq; + + struct platform_device *pdev; + struct reset_control *reset; + struct clk *clock; + void __iomem *regs; + + spinlock_t lock; + + struct clk *emc_clock; + unsigned long max_freq; + unsigned long cur_freq; + struct notifier_block rate_change_nb; + + struct tegra_devfreq_device devices[ARRAY_SIZE(actmon_device_configs)]; +}; + +struct tegra_actmon_emc_ratio { + unsigned long cpu_freq; + unsigned long emc_freq; +}; + +static struct tegra_actmon_emc_ratio actmon_emc_ratios[] = { + { 1400000, ULONG_MAX }, + { 1200000, 750000 }, + { 1100000, 600000 }, + { 1000000, 500000 }, + { 800000, 375000 }, + { 500000, 200000 }, + { 250000, 100000 }, +}; + +static unsigned long do_percent(unsigned long val, unsigned int pct) +{ + return val * pct / 100; +} + +static void tegra_devfreq_update_avg_wmark(struct tegra_devfreq_device *dev) +{ + u32 avg = dev->avg_count; + u32 band = dev->avg_band_freq * ACTMON_SAMPLING_PERIOD; + + writel(avg + band, dev->regs + ACTMON_DEV_AVG_UPPER_WMARK); + avg = max(avg, band); + writel(avg - band, dev->regs + ACTMON_DEV_AVG_LOWER_WMARK); +} + +static void tegra_devfreq_update_wmark(struct tegra_devfreq *tegra, + struct tegra_devfreq_device *dev) +{ + u32 val = tegra->cur_freq * ACTMON_SAMPLING_PERIOD; + + writel(do_percent(val, dev->config->boost_up_threshold), + dev->regs + ACTMON_DEV_UPPER_WMARK); + + writel(do_percent(val, dev->config->boost_down_threshold), + dev->regs + ACTMON_DEV_LOWER_WMARK); +} + +static void actmon_write_barrier(struct tegra_devfreq *tegra) +{ + /* ensure the update has reached the ACTMON */ + wmb(); + readl(tegra->regs + ACTMON_GLB_STATUS); +} + +static irqreturn_t actmon_isr(int irq, void *data) +{ + struct tegra_devfreq *tegra = data; + struct tegra_devfreq_device *dev = NULL; + unsigned long flags; + u32 val; + unsigned int i; + + val = readl(tegra->regs + ACTMON_GLB_STATUS); + + for (i = 0; i < ARRAY_SIZE(tegra->devices); i++) { + if (val & tegra->devices[i].config->irq_mask) { + dev = tegra->devices + i; + break; + } + } + + if (!dev) + return IRQ_NONE; + + spin_lock_irqsave(&tegra->lock, flags); + + dev->avg_count = readl(dev->regs + ACTMON_DEV_AVG_COUNT); + tegra_devfreq_update_avg_wmark(dev); + + val = readl(dev->regs + ACTMON_DEV_INTR_STATUS); + if (val & ACTMON_DEV_INTR_CONSECUTIVE_UPPER) { + val = readl(dev->regs + ACTMON_DEV_CTRL) | + ACTMON_DEV_CTRL_CONSECUTIVE_ABOVE_WMARK_EN | + ACTMON_DEV_CTRL_CONSECUTIVE_BELOW_WMARK_EN; + + /* + * new_boost = min(old_boost * up_coef + step, max_freq) + */ + dev->boost_freq = do_percent(dev->boost_freq, + dev->config->boost_up_coeff); + dev->boost_freq += ACTMON_BOOST_FREQ_STEP; + if (dev->boost_freq >= tegra->max_freq) { + dev->boost_freq = tegra->max_freq; + val &= ~ACTMON_DEV_CTRL_CONSECUTIVE_ABOVE_WMARK_EN; + } + writel(val, dev->regs + ACTMON_DEV_CTRL); + } else if (val & ACTMON_DEV_INTR_CONSECUTIVE_LOWER) { + val = readl(dev->regs + ACTMON_DEV_CTRL) | + ACTMON_DEV_CTRL_CONSECUTIVE_ABOVE_WMARK_EN | + ACTMON_DEV_CTRL_CONSECUTIVE_BELOW_WMARK_EN; + + /* + * new_boost = old_boost * down_coef + * or 0 if (old_boost * down_coef < step / 2) + */ + dev->boost_freq = do_percent(dev->boost_freq, + dev->config->boost_down_coeff); + if (dev->boost_freq < (ACTMON_BOOST_FREQ_STEP >> 1)) { + dev->boost_freq = 0; + val &= ~ACTMON_DEV_CTRL_CONSECUTIVE_BELOW_WMARK_EN; + } + writel(val, dev->regs + ACTMON_DEV_CTRL); + } + + if (dev->config->avg_dependency_threshold) { + val = readl(dev->regs + ACTMON_DEV_CTRL); + if (dev->avg_count >= dev->config->avg_dependency_threshold) + val |= ACTMON_DEV_CTRL_CONSECUTIVE_BELOW_WMARK_EN; + else if (dev->boost_freq == 0) + val &= ~ACTMON_DEV_CTRL_CONSECUTIVE_BELOW_WMARK_EN; + writel(val, dev->regs + ACTMON_DEV_CTRL); + } + + writel(ACTMON_INTR_STATUS_CLEAR, dev->regs + ACTMON_DEV_INTR_STATUS); + + actmon_write_barrier(tegra); + + spin_unlock_irqrestore(&tegra->lock, flags); + + return IRQ_WAKE_THREAD; +} + +static unsigned long actmon_cpu_to_emc_rate(struct tegra_devfreq *tegra, + unsigned long cpu_freq) +{ + unsigned int i; + struct tegra_actmon_emc_ratio *ratio = actmon_emc_ratios; + + for (i = 0; i < ARRAY_SIZE(actmon_emc_ratios); i++, ratio++) { + if (cpu_freq >= ratio->cpu_freq) { + if (ratio->emc_freq >= tegra->max_freq) + return tegra->max_freq; + else + return ratio->emc_freq; + } + } + + return 0; +} + +static void actmon_update_target(struct tegra_devfreq *tegra, + struct tegra_devfreq_device *dev) +{ + unsigned long cpu_freq = 0; + unsigned long static_cpu_emc_freq = 0; + unsigned int avg_sustain_coef; + unsigned long flags; + + if (dev->config->avg_dependency_threshold) { + cpu_freq = cpufreq_get(0); + static_cpu_emc_freq = actmon_cpu_to_emc_rate(tegra, cpu_freq); + } + + spin_lock_irqsave(&tegra->lock, flags); + + dev->target_freq = dev->avg_count / ACTMON_SAMPLING_PERIOD; + avg_sustain_coef = 100 * 100 / dev->config->boost_up_threshold; + dev->target_freq = do_percent(dev->target_freq, avg_sustain_coef); + dev->target_freq += dev->boost_freq; + + if (dev->avg_count >= dev->config->avg_dependency_threshold) + dev->target_freq = max(dev->target_freq, static_cpu_emc_freq); + + spin_unlock_irqrestore(&tegra->lock, flags); +} + +static irqreturn_t actmon_thread_isr(int irq, void *data) +{ + struct tegra_devfreq *tegra = data; + + mutex_lock(&tegra->devfreq->lock); + update_devfreq(tegra->devfreq); + mutex_unlock(&tegra->devfreq->lock); + + return IRQ_HANDLED; +} + +static int tegra_actmon_rate_notify_cb(struct notifier_block *nb, + unsigned long action, void *ptr) +{ + struct clk_notifier_data *data = ptr; + struct tegra_devfreq *tegra = container_of(nb, struct tegra_devfreq, + rate_change_nb); + unsigned int i; + unsigned long flags; + + spin_lock_irqsave(&tegra->lock, flags); + + switch (action) { + case POST_RATE_CHANGE: + tegra->cur_freq = data->new_rate / KHZ; + + for (i = 0; i < ARRAY_SIZE(tegra->devices); i++) + tegra_devfreq_update_wmark(tegra, tegra->devices + i); + + actmon_write_barrier(tegra); + break; + case PRE_RATE_CHANGE: + /* fall through */ + case ABORT_RATE_CHANGE: + break; + }; + + spin_unlock_irqrestore(&tegra->lock, flags); + + return NOTIFY_OK; +} + +static void tegra_actmon_configure_device(struct tegra_devfreq *tegra, + struct tegra_devfreq_device *dev) +{ + u32 val; + + dev->avg_band_freq = tegra->max_freq * ACTMON_DEFAULT_AVG_BAND / KHZ; + dev->target_freq = tegra->cur_freq; + + dev->avg_count = tegra->cur_freq * ACTMON_SAMPLING_PERIOD; + writel(dev->avg_count, dev->regs + ACTMON_DEV_INIT_AVG); + + tegra_devfreq_update_avg_wmark(dev); + tegra_devfreq_update_wmark(tegra, dev); + + writel(ACTMON_COUNT_WEIGHT, dev->regs + ACTMON_DEV_COUNT_WEIGHT); + writel(ACTMON_INTR_STATUS_CLEAR, dev->regs + ACTMON_DEV_INTR_STATUS); + + val = 0; + val |= ACTMON_DEV_CTRL_ENB_PERIODIC | + ACTMON_DEV_CTRL_AVG_ABOVE_WMARK_EN | + ACTMON_DEV_CTRL_AVG_BELOW_WMARK_EN; + val |= (ACTMON_AVERAGE_WINDOW_LOG2 - 1) + << ACTMON_DEV_CTRL_K_VAL_SHIFT; + val |= (ACTMON_BELOW_WMARK_WINDOW - 1) + << ACTMON_DEV_CTRL_CONSECUTIVE_BELOW_WMARK_NUM_SHIFT; + val |= (ACTMON_ABOVE_WMARK_WINDOW - 1) + << ACTMON_DEV_CTRL_CONSECUTIVE_ABOVE_WMARK_NUM_SHIFT; + val |= ACTMON_DEV_CTRL_CONSECUTIVE_BELOW_WMARK_EN | + ACTMON_DEV_CTRL_CONSECUTIVE_ABOVE_WMARK_EN; + + writel(val, dev->regs + ACTMON_DEV_CTRL); + + actmon_write_barrier(tegra); + + val = readl(dev->regs + ACTMON_DEV_CTRL); + val |= ACTMON_DEV_CTRL_ENB; + writel(val, dev->regs + ACTMON_DEV_CTRL); + + actmon_write_barrier(tegra); +} + +static int tegra_devfreq_suspend(struct device *dev) +{ + struct platform_device *pdev; + struct tegra_devfreq *tegra; + struct tegra_devfreq_device *actmon_dev; + unsigned int i; + u32 val; + + pdev = container_of(dev, struct platform_device, dev); + tegra = platform_get_drvdata(pdev); + + for (i = 0; i < ARRAY_SIZE(tegra->devices); i++) { + actmon_dev = &tegra->devices[i]; + + val = readl(actmon_dev->regs + ACTMON_DEV_CTRL); + val &= ~ACTMON_DEV_CTRL_ENB; + writel(val, actmon_dev->regs + ACTMON_DEV_CTRL); + + writel(ACTMON_INTR_STATUS_CLEAR, + actmon_dev->regs + ACTMON_DEV_INTR_STATUS); + + actmon_write_barrier(tegra); + } + + return 0; +} + +static int tegra_devfreq_resume(struct device *dev) +{ + struct platform_device *pdev; + struct tegra_devfreq *tegra; + struct tegra_devfreq_device *actmon_dev; + unsigned int i; + + pdev = container_of(dev, struct platform_device, dev); + tegra = platform_get_drvdata(pdev); + + for (i = 0; i < ARRAY_SIZE(tegra->devices); i++) { + actmon_dev = &tegra->devices[i]; + + tegra_actmon_configure_device(tegra, actmon_dev); + } + + return 0; +} + +static int tegra_devfreq_target(struct device *dev, unsigned long *freq, + u32 flags) +{ + struct platform_device *pdev; + struct tegra_devfreq *tegra; + struct dev_pm_opp *opp; + unsigned long rate = *freq * KHZ; + + pdev = container_of(dev, struct platform_device, dev); + tegra = platform_get_drvdata(pdev); + + rcu_read_lock(); + opp = devfreq_recommended_opp(dev, &rate, flags); + if (IS_ERR(opp)) { + rcu_read_unlock(); + dev_err(dev, "Failed to find opp for %lu KHz\n", *freq); + return PTR_ERR(opp); + } + rate = dev_pm_opp_get_freq(opp); + rcu_read_unlock(); + + /* TODO: Once we have per-user clk constraints, set a floor */ + clk_set_rate(tegra->emc_clock, rate); + + /* TODO: Set voltage as well */ + + return 0; +} + +static int tegra_devfreq_get_dev_status(struct device *dev, + struct devfreq_dev_status *stat) +{ + struct platform_device *pdev; + struct tegra_devfreq *tegra; + struct tegra_devfreq_device *actmon_dev; + + pdev = container_of(dev, struct platform_device, dev); + tegra = platform_get_drvdata(pdev); + + stat->current_frequency = tegra->cur_freq; + + /* To be used by the tegra governor */ + stat->private_data = tegra; + + /* The below are to be used by the other governors */ + + actmon_dev = &tegra->devices[MCALL]; + + /* Number of cycles spent on memory access */ + stat->busy_time = actmon_dev->avg_count; + + /* The bus can be considered to be saturated way before 100% */ + stat->busy_time *= 100 / BUS_SATURATION_RATIO; + + /* Number of cycles in a sampling period */ + stat->total_time = ACTMON_SAMPLING_PERIOD * tegra->cur_freq; + + return 0; +} + +static int tegra_devfreq_get_target(struct devfreq *devfreq, + unsigned long *freq) +{ + struct devfreq_dev_status stat; + struct tegra_devfreq *tegra; + struct tegra_devfreq_device *dev; + unsigned long target_freq = 0; + unsigned int i; + int err; + + err = devfreq->profile->get_dev_status(devfreq->dev.parent, &stat); + if (err) + return err; + + tegra = stat.private_data; + + for (i = 0; i < ARRAY_SIZE(tegra->devices); i++) { + dev = &tegra->devices[i]; + + actmon_update_target(tegra, dev); + + target_freq = max(target_freq, dev->target_freq); + } + + *freq = target_freq; + + return 0; +} + +static int tegra_devfreq_event_handler(struct devfreq *devfreq, + unsigned int event, void *data) +{ + return 0; +} + +static struct devfreq_governor tegra_devfreq_governor = { + .name = "tegra", + .get_target_freq = tegra_devfreq_get_target, + .event_handler = tegra_devfreq_event_handler, +}; + +static struct devfreq_dev_profile tegra_devfreq_profile = { + .polling_ms = 0, + .target = tegra_devfreq_target, + .get_dev_status = tegra_devfreq_get_dev_status, +}; + +static int tegra_devfreq_probe(struct platform_device *pdev) +{ + struct tegra_devfreq *tegra; + struct tegra_devfreq_device *dev; + struct resource *res; + unsigned long max_freq; + unsigned int i; + int irq; + int err; + + tegra = devm_kzalloc(&pdev->dev, sizeof(*tegra), GFP_KERNEL); + if (!tegra) + return -ENOMEM; + + spin_lock_init(&tegra->lock); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "Failed to get regs resource\n"); + return -ENODEV; + } + + tegra->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(tegra->regs)) { + dev_err(&pdev->dev, "Failed to get IO memory\n"); + return PTR_ERR(tegra->regs); + } + + tegra->reset = devm_reset_control_get(&pdev->dev, "actmon"); + if (IS_ERR(tegra->reset)) { + dev_err(&pdev->dev, "Failed to get reset\n"); + return PTR_ERR(tegra->reset); + } + + tegra->clock = devm_clk_get(&pdev->dev, "actmon"); + if (IS_ERR(tegra->clock)) { + dev_err(&pdev->dev, "Failed to get actmon clock\n"); + return PTR_ERR(tegra->clock); + } + + tegra->emc_clock = devm_clk_get(&pdev->dev, "emc"); + if (IS_ERR(tegra->emc_clock)) { + dev_err(&pdev->dev, "Failed to get emc clock\n"); + return PTR_ERR(tegra->emc_clock); + } + + err = of_init_opp_table(&pdev->dev); + if (err) { + dev_err(&pdev->dev, "Failed to init operating point table\n"); + return err; + } + + tegra->rate_change_nb.notifier_call = tegra_actmon_rate_notify_cb; + err = clk_notifier_register(tegra->emc_clock, &tegra->rate_change_nb); + if (err) { + dev_err(&pdev->dev, + "Failed to register rate change notifier\n"); + return err; + } + + reset_control_assert(tegra->reset); + + err = clk_prepare_enable(tegra->clock); + if (err) { + reset_control_deassert(tegra->reset); + return err; + } + + reset_control_deassert(tegra->reset); + + max_freq = clk_round_rate(tegra->emc_clock, ULONG_MAX); + tegra->max_freq = max_freq / KHZ; + + clk_set_rate(tegra->emc_clock, max_freq); + + tegra->cur_freq = clk_get_rate(tegra->emc_clock) / KHZ; + + writel(ACTMON_SAMPLING_PERIOD - 1, + tegra->regs + ACTMON_GLB_PERIOD_CTRL); + + for (i = 0; i < ARRAY_SIZE(actmon_device_configs); i++) { + dev = tegra->devices + i; + dev->config = actmon_device_configs + i; + dev->regs = tegra->regs + dev->config->offset; + + tegra_actmon_configure_device(tegra, tegra->devices + i); + } + + err = devfreq_add_governor(&tegra_devfreq_governor); + if (err) { + dev_err(&pdev->dev, "Failed to add governor\n"); + return err; + } + + tegra_devfreq_profile.initial_freq = clk_get_rate(tegra->emc_clock); + tegra->devfreq = devm_devfreq_add_device(&pdev->dev, + &tegra_devfreq_profile, + "tegra", + NULL); + + irq = platform_get_irq(pdev, 0); + err = devm_request_threaded_irq(&pdev->dev, irq, actmon_isr, + actmon_thread_isr, IRQF_SHARED, + "tegra-devfreq", tegra); + if (err) { + dev_err(&pdev->dev, "Interrupt request failed\n"); + return err; + } + + platform_set_drvdata(pdev, tegra); + + return 0; +} + +static int tegra_devfreq_remove(struct platform_device *pdev) +{ + struct tegra_devfreq *tegra = platform_get_drvdata(pdev); + + clk_notifier_unregister(tegra->emc_clock, &tegra->rate_change_nb); + + clk_disable_unprepare(tegra->clock); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(tegra_devfreq_pm_ops, + tegra_devfreq_suspend, + tegra_devfreq_resume); + +static struct of_device_id tegra_devfreq_of_match[] = { + { .compatible = "nvidia,tegra124-actmon" }, + { }, +}; + +static struct platform_driver tegra_devfreq_driver = { + .probe = tegra_devfreq_probe, + .remove = tegra_devfreq_remove, + .driver = { + .name = "tegra-devfreq", + .owner = THIS_MODULE, + .of_match_table = tegra_devfreq_of_match, + .pm = &tegra_devfreq_pm_ops, + }, +}; +module_platform_driver(tegra_devfreq_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Tegra devfreq driver"); +MODULE_AUTHOR("Tomeu Vizoso <tomeu.vizoso@collabora.com>"); +MODULE_DEVICE_TABLE(of, tegra_devfreq_of_match); diff --git a/drivers/dma/acpi-dma.c b/drivers/dma/acpi-dma.c index de361a1..5a63564 100644 --- a/drivers/dma/acpi-dma.c +++ b/drivers/dma/acpi-dma.c @@ -43,7 +43,7 @@ static int acpi_dma_parse_resource_group(const struct acpi_csrt_group *grp, { const struct acpi_csrt_shared_info *si; struct list_head resource_list; - struct resource_list_entry *rentry; + struct resource_entry *rentry; resource_size_t mem = 0, irq = 0; int ret; @@ -56,10 +56,10 @@ static int acpi_dma_parse_resource_group(const struct acpi_csrt_group *grp, return 0; list_for_each_entry(rentry, &resource_list, node) { - if (resource_type(&rentry->res) == IORESOURCE_MEM) - mem = rentry->res.start; - else if (resource_type(&rentry->res) == IORESOURCE_IRQ) - irq = rentry->res.start; + if (resource_type(rentry->res) == IORESOURCE_MEM) + mem = rentry->res->start; + else if (resource_type(rentry->res) == IORESOURCE_IRQ) + irq = rentry->res->start; } acpi_dev_free_resource_list(&resource_list); diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 4d6b269..bb3725b 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -861,8 +861,8 @@ static acpi_status vmbus_walk_resources(struct acpi_resource *res, void *ctx) break; case ACPI_RESOURCE_TYPE_ADDRESS64: - hyperv_mmio.start = res->data.address64.minimum; - hyperv_mmio.end = res->data.address64.maximum; + hyperv_mmio.start = res->data.address64.address.minimum; + hyperv_mmio.end = res->data.address64.address.maximum; break; } diff --git a/drivers/mailbox/pcc.c b/drivers/mailbox/pcc.c index 6dbf6fc..e8902f8 100644 --- a/drivers/mailbox/pcc.c +++ b/drivers/mailbox/pcc.c @@ -386,7 +386,7 @@ static int __init pcc_init(void) ret = acpi_pcc_probe(); if (ret) { - pr_err("ACPI PCC probe failed.\n"); + pr_debug("ACPI PCC probe failed.\n"); return -ENODEV; } @@ -394,7 +394,7 @@ static int __init pcc_init(void) pcc_mbox_probe, NULL, 0, NULL, 0); if (!pcc_pdev) { - pr_err("Err creating PCC platform bundle\n"); + pr_debug("Err creating PCC platform bundle\n"); return -ENODEV; } diff --git a/drivers/net/ethernet/amd/atarilance.c b/drivers/net/ethernet/amd/atarilance.c index e07ce5f..b10964e 100644 --- a/drivers/net/ethernet/amd/atarilance.c +++ b/drivers/net/ethernet/amd/atarilance.c @@ -553,8 +553,8 @@ static unsigned long __init lance_probe1( struct net_device *dev, if (lp->cardtype == PAM_CARD || memaddr == (unsigned short *)0xffe00000) { /* PAMs card and Riebl on ST use level 5 autovector */ - if (request_irq(IRQ_AUTO_5, lance_interrupt, IRQ_TYPE_PRIO, - "PAM,Riebl-ST Ethernet", dev)) { + if (request_irq(IRQ_AUTO_5, lance_interrupt, 0, + "PAM,Riebl-ST Ethernet", dev)) { printk( "Lance: request for irq %d failed\n", IRQ_AUTO_5 ); return 0; } @@ -567,8 +567,8 @@ static unsigned long __init lance_probe1( struct net_device *dev, printk( "Lance: request for VME interrupt failed\n" ); return 0; } - if (request_irq(irq, lance_interrupt, IRQ_TYPE_PRIO, - "Riebl-VME Ethernet", dev)) { + if (request_irq(irq, lance_interrupt, 0, "Riebl-VME Ethernet", + dev)) { printk( "Lance: request for irq %u failed\n", irq ); return 0; } diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c index 14a1c5c..fa274e0 100644 --- a/drivers/net/ethernet/realtek/r8169.c +++ b/drivers/net/ethernet/realtek/r8169.c @@ -4915,7 +4915,7 @@ static void r8168c_hw_jumbo_enable(struct rtl8169_private *tp) RTL_W8(Config3, RTL_R8(Config3) | Jumbo_En0); RTL_W8(Config4, RTL_R8(Config4) | Jumbo_En1); - rtl_tx_performance_tweak(tp->pci_dev, 0x2 << MAX_READ_REQUEST_SHIFT); + rtl_tx_performance_tweak(tp->pci_dev, PCI_EXP_DEVCTL_READRQ_512B); } static void r8168c_hw_jumbo_disable(struct rtl8169_private *tp) @@ -4948,7 +4948,7 @@ static void r8168e_hw_jumbo_enable(struct rtl8169_private *tp) RTL_W8(MaxTxPacketSize, 0x3f); RTL_W8(Config3, RTL_R8(Config3) | Jumbo_En0); RTL_W8(Config4, RTL_R8(Config4) | 0x01); - rtl_tx_performance_tweak(tp->pci_dev, 0x2 << MAX_READ_REQUEST_SHIFT); + rtl_tx_performance_tweak(tp->pci_dev, PCI_EXP_DEVCTL_READRQ_512B); } static void r8168e_hw_jumbo_disable(struct rtl8169_private *tp) @@ -4964,7 +4964,7 @@ static void r8168e_hw_jumbo_disable(struct rtl8169_private *tp) static void r8168b_0_hw_jumbo_enable(struct rtl8169_private *tp) { rtl_tx_performance_tweak(tp->pci_dev, - (0x2 << MAX_READ_REQUEST_SHIFT) | PCI_EXP_DEVCTL_NOSNOOP_EN); + PCI_EXP_DEVCTL_READRQ_512B | PCI_EXP_DEVCTL_NOSNOOP_EN); } static void r8168b_0_hw_jumbo_disable(struct rtl8169_private *tp) diff --git a/drivers/net/xen-netback/interface.c b/drivers/net/xen-netback/interface.c index 037f74f..12f9e27 100644 --- a/drivers/net/xen-netback/interface.c +++ b/drivers/net/xen-netback/interface.c @@ -483,9 +483,8 @@ int xenvif_init_queue(struct xenvif_queue *queue) * better enable it. The long term solution would be to use just a * bunch of valid page descriptors, without dependency on ballooning */ - err = alloc_xenballooned_pages(MAX_PENDING_REQS, - queue->mmap_pages, - false); + err = gnttab_alloc_pages(MAX_PENDING_REQS, + queue->mmap_pages); if (err) { netdev_err(queue->vif->dev, "Could not reserve mmap_pages\n"); return -ENOMEM; @@ -664,7 +663,7 @@ void xenvif_disconnect(struct xenvif *vif) */ void xenvif_deinit_queue(struct xenvif_queue *queue) { - free_xenballooned_pages(MAX_PENDING_REQS, queue->mmap_pages); + gnttab_free_pages(MAX_PENDING_REQS, queue->mmap_pages); } void xenvif_free(struct xenvif *vif) diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c index c8ce701..7dc2d64 100644 --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -314,9 +314,7 @@ static struct xenvif_rx_meta *get_next_rx_buffer(struct xenvif_queue *queue, static void xenvif_gop_frag_copy(struct xenvif_queue *queue, struct sk_buff *skb, struct netrx_pending_operations *npo, struct page *page, unsigned long size, - unsigned long offset, int *head, - struct xenvif_queue *foreign_queue, - grant_ref_t foreign_gref) + unsigned long offset, int *head) { struct gnttab_copy *copy_gop; struct xenvif_rx_meta *meta; @@ -333,6 +331,8 @@ static void xenvif_gop_frag_copy(struct xenvif_queue *queue, struct sk_buff *skb offset &= ~PAGE_MASK; while (size > 0) { + struct xen_page_foreign *foreign; + BUG_ON(offset >= PAGE_SIZE); BUG_ON(npo->copy_off > MAX_BUFFER_OFFSET); @@ -361,9 +361,10 @@ static void xenvif_gop_frag_copy(struct xenvif_queue *queue, struct sk_buff *skb copy_gop->flags = GNTCOPY_dest_gref; copy_gop->len = bytes; - if (foreign_queue) { - copy_gop->source.domid = foreign_queue->vif->domid; - copy_gop->source.u.ref = foreign_gref; + foreign = xen_page_foreign(page); + if (foreign) { + copy_gop->source.domid = foreign->domid; + copy_gop->source.u.ref = foreign->gref; copy_gop->flags |= GNTCOPY_source_gref; } else { copy_gop->source.domid = DOMID_SELF; @@ -406,35 +407,6 @@ static void xenvif_gop_frag_copy(struct xenvif_queue *queue, struct sk_buff *skb } /* - * Find the grant ref for a given frag in a chain of struct ubuf_info's - * skb: the skb itself - * i: the frag's number - * ubuf: a pointer to an element in the chain. It should not be NULL - * - * Returns a pointer to the element in the chain where the page were found. If - * not found, returns NULL. - * See the definition of callback_struct in common.h for more details about - * the chain. - */ -static const struct ubuf_info *xenvif_find_gref(const struct sk_buff *const skb, - const int i, - const struct ubuf_info *ubuf) -{ - struct xenvif_queue *foreign_queue = ubuf_to_queue(ubuf); - - do { - u16 pending_idx = ubuf->desc; - - if (skb_shinfo(skb)->frags[i].page.p == - foreign_queue->mmap_pages[pending_idx]) - break; - ubuf = (struct ubuf_info *) ubuf->ctx; - } while (ubuf); - - return ubuf; -} - -/* * Prepare an SKB to be transmitted to the frontend. * * This function is responsible for allocating grant operations, meta @@ -459,8 +431,6 @@ static int xenvif_gop_skb(struct sk_buff *skb, int head = 1; int old_meta_prod; int gso_type; - const struct ubuf_info *ubuf = skb_shinfo(skb)->destructor_arg; - const struct ubuf_info *const head_ubuf = ubuf; old_meta_prod = npo->meta_prod; @@ -507,68 +477,16 @@ static int xenvif_gop_skb(struct sk_buff *skb, len = skb_tail_pointer(skb) - data; xenvif_gop_frag_copy(queue, skb, npo, - virt_to_page(data), len, offset, &head, - NULL, - 0); + virt_to_page(data), len, offset, &head); data += len; } for (i = 0; i < nr_frags; i++) { - /* This variable also signals whether foreign_gref has a real - * value or not. - */ - struct xenvif_queue *foreign_queue = NULL; - grant_ref_t foreign_gref; - - if ((skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY) && - (ubuf->callback == &xenvif_zerocopy_callback)) { - const struct ubuf_info *const startpoint = ubuf; - - /* Ideally ubuf points to the chain element which - * belongs to this frag. Or if frags were removed from - * the beginning, then shortly before it. - */ - ubuf = xenvif_find_gref(skb, i, ubuf); - - /* Try again from the beginning of the list, if we - * haven't tried from there. This only makes sense in - * the unlikely event of reordering the original frags. - * For injected local pages it's an unnecessary second - * run. - */ - if (unlikely(!ubuf) && startpoint != head_ubuf) - ubuf = xenvif_find_gref(skb, i, head_ubuf); - - if (likely(ubuf)) { - u16 pending_idx = ubuf->desc; - - foreign_queue = ubuf_to_queue(ubuf); - foreign_gref = - foreign_queue->pending_tx_info[pending_idx].req.gref; - /* Just a safety measure. If this was the last - * element on the list, the for loop will - * iterate again if a local page were added to - * the end. Using head_ubuf here prevents the - * second search on the chain. Or the original - * frags changed order, but that's less likely. - * In any way, ubuf shouldn't be NULL. - */ - ubuf = ubuf->ctx ? - (struct ubuf_info *) ubuf->ctx : - head_ubuf; - } else - /* This frag was a local page, added to the - * array after the skb left netback. - */ - ubuf = head_ubuf; - } xenvif_gop_frag_copy(queue, skb, npo, skb_frag_page(&skb_shinfo(skb)->frags[i]), skb_frag_size(&skb_shinfo(skb)->frags[i]), skb_shinfo(skb)->frags[i].page_offset, - &head, - foreign_queue, - foreign_queue ? foreign_gref : UINT_MAX); + &head); } return npo->meta_prod - old_meta_prod; @@ -1241,12 +1159,6 @@ static void xenvif_fill_frags(struct xenvif_queue *queue, struct sk_buff *skb) /* Take an extra reference to offset network stack's put_page */ get_page(queue->mmap_pages[pending_idx]); } - /* FIXME: __skb_fill_page_desc set this to true because page->pfmemalloc - * overlaps with "index", and "mapping" is not set. I think mapping - * should be set. If delivered to local stack, it would drop this - * skb in sk_filter unless the socket has the right to use it. - */ - skb->pfmemalloc = false; } static int xenvif_get_extras(struct xenvif_queue *queue, diff --git a/drivers/of/of_pci.c b/drivers/of/of_pci.c index 88471d3..110fece 100644 --- a/drivers/of/of_pci.c +++ b/drivers/of/of_pci.c @@ -140,6 +140,7 @@ int of_pci_get_host_bridge_resources(struct device_node *dev, unsigned char busno, unsigned char bus_max, struct list_head *resources, resource_size_t *io_base) { + struct resource_entry *window; struct resource *res; struct resource *bus_range; struct of_pci_range range; @@ -225,7 +226,10 @@ int of_pci_get_host_bridge_resources(struct device_node *dev, conversion_failed: kfree(res); parse_failed: + resource_list_for_each_entry(window, resources) + kfree(window->res); pci_free_resource_list(resources); + kfree(bus_range); return err; } EXPORT_SYMBOL_GPL(of_pci_get_host_bridge_resources); diff --git a/drivers/parport/parport_atari.c b/drivers/parport/parport_atari.c index 7ad59ac..a81cd2a 100644 --- a/drivers/parport/parport_atari.c +++ b/drivers/parport/parport_atari.c @@ -192,8 +192,8 @@ static int __init parport_atari_init(void) &parport_atari_ops); if (!p) return -ENODEV; - if (request_irq(IRQ_MFP_BUSY, parport_irq_handler, - IRQ_TYPE_SLOW, p->name, p)) { + if (request_irq(IRQ_MFP_BUSY, parport_irq_handler, 0, p->name, + p)) { parport_put_port (p); return -ENODEV; } diff --git a/drivers/pci/access.c b/drivers/pci/access.c index 49dd766..d9b64a1 100644 --- a/drivers/pci/access.c +++ b/drivers/pci/access.c @@ -67,6 +67,93 @@ EXPORT_SYMBOL(pci_bus_write_config_byte); EXPORT_SYMBOL(pci_bus_write_config_word); EXPORT_SYMBOL(pci_bus_write_config_dword); +int pci_generic_config_read(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 *val) +{ + void __iomem *addr; + + addr = bus->ops->map_bus(bus, devfn, where); + if (!addr) { + *val = ~0; + return PCIBIOS_DEVICE_NOT_FOUND; + } + + if (size == 1) + *val = readb(addr); + else if (size == 2) + *val = readw(addr); + else + *val = readl(addr); + + return PCIBIOS_SUCCESSFUL; +} +EXPORT_SYMBOL_GPL(pci_generic_config_read); + +int pci_generic_config_write(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 val) +{ + void __iomem *addr; + + addr = bus->ops->map_bus(bus, devfn, where); + if (!addr) + return PCIBIOS_DEVICE_NOT_FOUND; + + if (size == 1) + writeb(val, addr); + else if (size == 2) + writew(val, addr); + else + writel(val, addr); + + return PCIBIOS_SUCCESSFUL; +} +EXPORT_SYMBOL_GPL(pci_generic_config_write); + +int pci_generic_config_read32(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 *val) +{ + void __iomem *addr; + + addr = bus->ops->map_bus(bus, devfn, where & ~0x3); + if (!addr) { + *val = ~0; + return PCIBIOS_DEVICE_NOT_FOUND; + } + + *val = readl(addr); + + if (size <= 2) + *val = (*val >> (8 * (where & 3))) & ((1 << (size * 8)) - 1); + + return PCIBIOS_SUCCESSFUL; +} +EXPORT_SYMBOL_GPL(pci_generic_config_read32); + +int pci_generic_config_write32(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 val) +{ + void __iomem *addr; + u32 mask, tmp; + + addr = bus->ops->map_bus(bus, devfn, where & ~0x3); + if (!addr) + return PCIBIOS_DEVICE_NOT_FOUND; + + if (size == 4) { + writel(val, addr); + return PCIBIOS_SUCCESSFUL; + } else { + mask = ~(((1 << (size * 8)) - 1) << ((where & 0x3) * 8)); + } + + tmp = readl(addr) & mask; + tmp |= val << ((where & 0x3) * 8); + writel(tmp, addr); + + return PCIBIOS_SUCCESSFUL; +} +EXPORT_SYMBOL_GPL(pci_generic_config_write32); + /** * pci_bus_set_ops - Set raw operations of pci bus * @bus: pci bus struct diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index 8fb1618..90fa3a7 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -20,17 +20,16 @@ void pci_add_resource_offset(struct list_head *resources, struct resource *res, resource_size_t offset) { - struct pci_host_bridge_window *window; + struct resource_entry *entry; - window = kzalloc(sizeof(struct pci_host_bridge_window), GFP_KERNEL); - if (!window) { + entry = resource_list_create_entry(res, 0); + if (!entry) { printk(KERN_ERR "PCI: can't add host bridge window %pR\n", res); return; } - window->res = res; - window->offset = offset; - list_add_tail(&window->list, resources); + entry->offset = offset; + resource_list_add_tail(entry, resources); } EXPORT_SYMBOL(pci_add_resource_offset); @@ -42,12 +41,7 @@ EXPORT_SYMBOL(pci_add_resource); void pci_free_resource_list(struct list_head *resources) { - struct pci_host_bridge_window *window, *tmp; - - list_for_each_entry_safe(window, tmp, resources, list) { - list_del(&window->list); - kfree(window); - } + resource_list_free(resources); } EXPORT_SYMBOL(pci_free_resource_list); diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c index 0e5f3c9..39b2dbe 100644 --- a/drivers/pci/host-bridge.c +++ b/drivers/pci/host-bridge.c @@ -35,10 +35,10 @@ void pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region, struct resource *res) { struct pci_host_bridge *bridge = find_pci_host_bridge(bus); - struct pci_host_bridge_window *window; + struct resource_entry *window; resource_size_t offset = 0; - list_for_each_entry(window, &bridge->windows, list) { + resource_list_for_each_entry(window, &bridge->windows) { if (resource_contains(window->res, res)) { offset = window->offset; break; @@ -60,10 +60,10 @@ void pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res, struct pci_bus_region *region) { struct pci_host_bridge *bridge = find_pci_host_bridge(bus); - struct pci_host_bridge_window *window; + struct resource_entry *window; resource_size_t offset = 0; - list_for_each_entry(window, &bridge->windows, list) { + resource_list_for_each_entry(window, &bridge->windows) { struct pci_bus_region bus_region; if (resource_type(res) != resource_type(window->res)) diff --git a/drivers/pci/host/Kconfig b/drivers/pci/host/Kconfig index c4b6568..7b892a9 100644 --- a/drivers/pci/host/Kconfig +++ b/drivers/pci/host/Kconfig @@ -102,4 +102,8 @@ config PCI_LAYERSCAPE help Say Y here if you want PCIe controller support on Layerscape SoCs. +config PCI_VERSATILE + bool "ARM Versatile PB PCI controller" + depends on ARCH_VERSATILE + endmenu diff --git a/drivers/pci/host/Makefile b/drivers/pci/host/Makefile index 44c2699..e61d91c 100644 --- a/drivers/pci/host/Makefile +++ b/drivers/pci/host/Makefile @@ -12,3 +12,4 @@ obj-$(CONFIG_PCI_KEYSTONE) += pci-keystone-dw.o pci-keystone.o obj-$(CONFIG_PCIE_XILINX) += pcie-xilinx.o obj-$(CONFIG_PCI_XGENE) += pci-xgene.o obj-$(CONFIG_PCI_LAYERSCAPE) += pci-layerscape.o +obj-$(CONFIG_PCI_VERSATILE) += pci-versatile.o diff --git a/drivers/pci/host/pci-host-generic.c b/drivers/pci/host/pci-host-generic.c index 6eb1aa7..ba46e58 100644 --- a/drivers/pci/host/pci-host-generic.c +++ b/drivers/pci/host/pci-host-generic.c @@ -76,55 +76,9 @@ static struct gen_pci_cfg_bus_ops gen_pci_cfg_ecam_bus_ops = { .map_bus = gen_pci_map_cfg_bus_ecam, }; -static int gen_pci_config_read(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 *val) -{ - void __iomem *addr; - struct pci_sys_data *sys = bus->sysdata; - struct gen_pci *pci = sys->private_data; - - addr = pci->cfg.ops->map_bus(bus, devfn, where); - - switch (size) { - case 1: - *val = readb(addr); - break; - case 2: - *val = readw(addr); - break; - default: - *val = readl(addr); - } - - return PCIBIOS_SUCCESSFUL; -} - -static int gen_pci_config_write(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 val) -{ - void __iomem *addr; - struct pci_sys_data *sys = bus->sysdata; - struct gen_pci *pci = sys->private_data; - - addr = pci->cfg.ops->map_bus(bus, devfn, where); - - switch (size) { - case 1: - writeb(val, addr); - break; - case 2: - writew(val, addr); - break; - default: - writel(val, addr); - } - - return PCIBIOS_SUCCESSFUL; -} - static struct pci_ops gen_pci_ops = { - .read = gen_pci_config_read, - .write = gen_pci_config_write, + .read = pci_generic_config_read, + .write = pci_generic_config_write, }; static const struct of_device_id gen_pci_of_match[] = { @@ -149,14 +103,14 @@ static int gen_pci_parse_request_of_pci_ranges(struct gen_pci *pci) struct device *dev = pci->host.dev.parent; struct device_node *np = dev->of_node; resource_size_t iobase; - struct pci_host_bridge_window *win; + struct resource_entry *win; err = of_pci_get_host_bridge_resources(np, 0, 0xff, &pci->resources, &iobase); if (err) return err; - list_for_each_entry(win, &pci->resources, list) { + resource_list_for_each_entry(win, &pci->resources) { struct resource *parent, *res = win->res; switch (resource_type(res)) { @@ -287,6 +241,7 @@ static int gen_pci_probe(struct platform_device *pdev) of_id = of_match_node(gen_pci_of_match, np); pci->cfg.ops = of_id->data; + gen_pci_ops.map_bus = pci->cfg.ops->map_bus; pci->host.dev.parent = dev; INIT_LIST_HEAD(&pci->host.windows); INIT_LIST_HEAD(&pci->resources); diff --git a/drivers/pci/host/pci-keystone.c b/drivers/pci/host/pci-keystone.c index 78f79e3..75333b0 100644 --- a/drivers/pci/host/pci-keystone.c +++ b/drivers/pci/host/pci-keystone.c @@ -119,7 +119,7 @@ static void ks_pcie_msi_irq_handler(unsigned int irq, struct irq_desc *desc) struct pcie_port *pp = &ks_pcie->pp; struct irq_chip *chip = irq_desc_get_chip(desc); - dev_dbg(pp->dev, "ks_pci_msi_irq_handler, irq %d\n", irq); + dev_dbg(pp->dev, "%s, irq %d\n", __func__, irq); /* * The chained irq handler installation would have replaced normal @@ -197,7 +197,7 @@ static int ks_pcie_get_irq_controller_info(struct keystone_pcie *ks_pcie, */ for (temp = 0; temp < max_host_irqs; temp++) { host_irqs[temp] = irq_of_parse_and_map(*np_temp, temp); - if (host_irqs[temp] < 0) + if (!host_irqs[temp]) break; } if (temp) { diff --git a/drivers/pci/host/pci-layerscape.c b/drivers/pci/host/pci-layerscape.c index 6697b1a..68c9e5e 100644 --- a/drivers/pci/host/pci-layerscape.c +++ b/drivers/pci/host/pci-layerscape.c @@ -167,7 +167,6 @@ MODULE_DEVICE_TABLE(of, ls_pcie_of_match); static struct platform_driver ls_pcie_driver = { .driver = { .name = "layerscape-pcie", - .owner = THIS_MODULE, .of_match_table = ls_pcie_of_match, }, }; diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/host/pci-mvebu.c index 1dd7595..1309cfb 100644 --- a/drivers/pci/host/pci-mvebu.c +++ b/drivers/pci/host/pci-mvebu.c @@ -101,9 +101,7 @@ struct mvebu_pcie { struct mvebu_pcie_port *ports; struct msi_controller *msi; struct resource io; - char io_name[30]; struct resource realio; - char mem_name[30]; struct resource mem; struct resource busn; int nports; @@ -723,18 +721,9 @@ static int mvebu_pcie_setup(int nr, struct pci_sys_data *sys) { struct mvebu_pcie *pcie = sys_to_pcie(sys); int i; - int domain = 0; -#ifdef CONFIG_PCI_DOMAINS - domain = sys->domain; -#endif - - snprintf(pcie->mem_name, sizeof(pcie->mem_name), "PCI MEM %04x", - domain); - pcie->mem.name = pcie->mem_name; - - snprintf(pcie->io_name, sizeof(pcie->io_name), "PCI I/O %04x", domain); - pcie->realio.name = pcie->io_name; + pcie->mem.name = "PCI MEM"; + pcie->realio.name = "PCI I/O"; if (request_resource(&iomem_resource, &pcie->mem)) return 0; diff --git a/drivers/pci/host/pci-rcar-gen2.c b/drivers/pci/host/pci-rcar-gen2.c index d9c042f..dd6b84e 100644 --- a/drivers/pci/host/pci-rcar-gen2.c +++ b/drivers/pci/host/pci-rcar-gen2.c @@ -131,52 +131,6 @@ static void __iomem *rcar_pci_cfg_base(struct pci_bus *bus, unsigned int devfn, return priv->reg + (slot >> 1) * 0x100 + where; } -static int rcar_pci_read_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 *val) -{ - void __iomem *reg = rcar_pci_cfg_base(bus, devfn, where); - - if (!reg) - return PCIBIOS_DEVICE_NOT_FOUND; - - switch (size) { - case 1: - *val = ioread8(reg); - break; - case 2: - *val = ioread16(reg); - break; - default: - *val = ioread32(reg); - break; - } - - return PCIBIOS_SUCCESSFUL; -} - -static int rcar_pci_write_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 val) -{ - void __iomem *reg = rcar_pci_cfg_base(bus, devfn, where); - - if (!reg) - return PCIBIOS_DEVICE_NOT_FOUND; - - switch (size) { - case 1: - iowrite8(val, reg); - break; - case 2: - iowrite16(val, reg); - break; - default: - iowrite32(val, reg); - break; - } - - return PCIBIOS_SUCCESSFUL; -} - /* PCI interrupt mapping */ static int rcar_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { @@ -325,8 +279,9 @@ static int rcar_pci_setup(int nr, struct pci_sys_data *sys) } static struct pci_ops rcar_pci_ops = { - .read = rcar_pci_read_config, - .write = rcar_pci_write_config, + .map_bus = rcar_pci_cfg_base, + .read = pci_generic_config_read, + .write = pci_generic_config_write, }; static int rcar_pci_probe(struct platform_device *pdev) diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c index a800ae9..00e9272 100644 --- a/drivers/pci/host/pci-tegra.c +++ b/drivers/pci/host/pci-tegra.c @@ -480,59 +480,10 @@ static void __iomem *tegra_pcie_conf_address(struct pci_bus *bus, return addr; } -static int tegra_pcie_read_conf(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 *value) -{ - void __iomem *addr; - - addr = tegra_pcie_conf_address(bus, devfn, where); - if (!addr) { - *value = 0xffffffff; - return PCIBIOS_DEVICE_NOT_FOUND; - } - - *value = readl(addr); - - if (size == 1) - *value = (*value >> (8 * (where & 3))) & 0xff; - else if (size == 2) - *value = (*value >> (8 * (where & 3))) & 0xffff; - - return PCIBIOS_SUCCESSFUL; -} - -static int tegra_pcie_write_conf(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 value) -{ - void __iomem *addr; - u32 mask, tmp; - - addr = tegra_pcie_conf_address(bus, devfn, where); - if (!addr) - return PCIBIOS_DEVICE_NOT_FOUND; - - if (size == 4) { - writel(value, addr); - return PCIBIOS_SUCCESSFUL; - } - - if (size == 2) - mask = ~(0xffff << ((where & 0x3) * 8)); - else if (size == 1) - mask = ~(0xff << ((where & 0x3) * 8)); - else - return PCIBIOS_BAD_REGISTER_NUMBER; - - tmp = readl(addr) & mask; - tmp |= value << ((where & 0x3) * 8); - writel(tmp, addr); - - return PCIBIOS_SUCCESSFUL; -} - static struct pci_ops tegra_pcie_ops = { - .read = tegra_pcie_read_conf, - .write = tegra_pcie_write_conf, + .map_bus = tegra_pcie_conf_address, + .read = pci_generic_config_read32, + .write = pci_generic_config_write32, }; static unsigned long tegra_pcie_port_get_pex_ctrl(struct tegra_pcie_port *port) @@ -625,19 +576,6 @@ static void tegra_pcie_port_free(struct tegra_pcie_port *port) devm_kfree(pcie->dev, port); } -static void tegra_pcie_fixup_bridge(struct pci_dev *dev) -{ - u16 reg; - - if ((dev->class >> 16) == PCI_BASE_CLASS_BRIDGE) { - pci_read_config_word(dev, PCI_COMMAND, ®); - reg |= (PCI_COMMAND_IO | PCI_COMMAND_MEMORY | - PCI_COMMAND_MASTER | PCI_COMMAND_SERR); - pci_write_config_word(dev, PCI_COMMAND, reg); - } -} -DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, tegra_pcie_fixup_bridge); - /* Tegra PCIE root complex wrongly reports device class */ static void tegra_pcie_fixup_class(struct pci_dev *dev) { diff --git a/drivers/pci/host/pci-versatile.c b/drivers/pci/host/pci-versatile.c new file mode 100644 index 0000000..1ec694a --- /dev/null +++ b/drivers/pci/host/pci-versatile.c @@ -0,0 +1,237 @@ +/* + * Copyright 2004 Koninklijke Philips Electronics NV + * + * Conversion to platform driver and DT: + * Copyright 2014 Linaro Ltd. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * 14/04/2005 Initial version, colin.king@philips.com + */ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of_address.h> +#include <linux/of_pci.h> +#include <linux/of_platform.h> +#include <linux/pci.h> +#include <linux/platform_device.h> + +static void __iomem *versatile_pci_base; +static void __iomem *versatile_cfg_base[2]; + +#define PCI_IMAP(m) (versatile_pci_base + ((m) * 4)) +#define PCI_SMAP(m) (versatile_pci_base + 0x14 + ((m) * 4)) +#define PCI_SELFID (versatile_pci_base + 0xc) + +#define VP_PCI_DEVICE_ID 0x030010ee +#define VP_PCI_CLASS_ID 0x0b400000 + +static u32 pci_slot_ignore; + +static int __init versatile_pci_slot_ignore(char *str) +{ + int retval; + int slot; + + while ((retval = get_option(&str, &slot))) { + if ((slot < 0) || (slot > 31)) + pr_err("Illegal slot value: %d\n", slot); + else + pci_slot_ignore |= (1 << slot); + } + return 1; +} +__setup("pci_slot_ignore=", versatile_pci_slot_ignore); + + +static void __iomem *versatile_map_bus(struct pci_bus *bus, + unsigned int devfn, int offset) +{ + unsigned int busnr = bus->number; + + if (pci_slot_ignore & (1 << PCI_SLOT(devfn))) + return NULL; + + return versatile_cfg_base[1] + ((busnr << 16) | (devfn << 8) | offset); +} + +static struct pci_ops pci_versatile_ops = { + .map_bus = versatile_map_bus, + .read = pci_generic_config_read32, + .write = pci_generic_config_write, +}; + +static int versatile_pci_parse_request_of_pci_ranges(struct device *dev, + struct list_head *res) +{ + int err, mem = 1, res_valid = 0; + struct device_node *np = dev->of_node; + resource_size_t iobase; + struct resource_entry *win; + + err = of_pci_get_host_bridge_resources(np, 0, 0xff, res, &iobase); + if (err) + return err; + + resource_list_for_each_entry(win, res, list) { + struct resource *parent, *res = win->res; + + switch (resource_type(res)) { + case IORESOURCE_IO: + parent = &ioport_resource; + err = pci_remap_iospace(res, iobase); + if (err) { + dev_warn(dev, "error %d: failed to map resource %pR\n", + err, res); + continue; + } + break; + case IORESOURCE_MEM: + parent = &iomem_resource; + res_valid |= !(res->flags & IORESOURCE_PREFETCH); + + writel(res->start >> 28, PCI_IMAP(mem)); + writel(PHYS_OFFSET >> 28, PCI_SMAP(mem)); + mem++; + + break; + case IORESOURCE_BUS: + default: + continue; + } + + err = devm_request_resource(dev, parent, res); + if (err) + goto out_release_res; + } + + if (!res_valid) { + dev_err(dev, "non-prefetchable memory resource required\n"); + err = -EINVAL; + goto out_release_res; + } + + return 0; + +out_release_res: + pci_free_resource_list(res); + return err; +} + +/* Unused, temporary to satisfy ARM arch code */ +struct pci_sys_data sys; + +static int versatile_pci_probe(struct platform_device *pdev) +{ + struct resource *res; + int ret, i, myslot = -1; + u32 val; + void __iomem *local_pci_cfg_base; + struct pci_bus *bus; + LIST_HEAD(pci_res); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -ENODEV; + versatile_pci_base = devm_ioremap_resource(&pdev->dev, res); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (!res) + return -ENODEV; + versatile_cfg_base[0] = devm_ioremap_resource(&pdev->dev, res); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 2); + if (!res) + return -ENODEV; + versatile_cfg_base[1] = devm_ioremap_resource(&pdev->dev, res); + + ret = versatile_pci_parse_request_of_pci_ranges(&pdev->dev, &pci_res); + if (ret) + return ret; + + /* + * We need to discover the PCI core first to configure itself + * before the main PCI probing is performed + */ + for (i = 0; i < 32; i++) { + if ((readl(versatile_cfg_base[0] + (i << 11) + PCI_VENDOR_ID) == VP_PCI_DEVICE_ID) && + (readl(versatile_cfg_base[0] + (i << 11) + PCI_CLASS_REVISION) == VP_PCI_CLASS_ID)) { + myslot = i; + break; + } + } + if (myslot == -1) { + dev_err(&pdev->dev, "Cannot find PCI core!\n"); + return -EIO; + } + /* + * Do not to map Versatile FPGA PCI device into memory space + */ + pci_slot_ignore |= (1 << myslot); + + dev_info(&pdev->dev, "PCI core found (slot %d)\n", myslot); + + writel(myslot, PCI_SELFID); + local_pci_cfg_base = versatile_cfg_base[1] + (myslot << 11); + + val = readl(local_pci_cfg_base + PCI_COMMAND); + val |= PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE; + writel(val, local_pci_cfg_base + PCI_COMMAND); + + /* + * Configure the PCI inbound memory windows to be 1:1 mapped to SDRAM + */ + writel(PHYS_OFFSET, local_pci_cfg_base + PCI_BASE_ADDRESS_0); + writel(PHYS_OFFSET, local_pci_cfg_base + PCI_BASE_ADDRESS_1); + writel(PHYS_OFFSET, local_pci_cfg_base + PCI_BASE_ADDRESS_2); + + /* + * For many years the kernel and QEMU were symbiotically buggy + * in that they both assumed the same broken IRQ mapping. + * QEMU therefore attempts to auto-detect old broken kernels + * so that they still work on newer QEMU as they did on old + * QEMU. Since we now use the correct (ie matching-hardware) + * IRQ mapping we write a definitely different value to a + * PCI_INTERRUPT_LINE register to tell QEMU that we expect + * real hardware behaviour and it need not be backwards + * compatible for us. This write is harmless on real hardware. + */ + writel(0, versatile_cfg_base[0] + PCI_INTERRUPT_LINE); + + pci_add_flags(PCI_ENABLE_PROC_DOMAINS); + pci_add_flags(PCI_REASSIGN_ALL_BUS | PCI_REASSIGN_ALL_RSRC); + + bus = pci_scan_root_bus(&pdev->dev, 0, &pci_versatile_ops, &sys, &pci_res); + if (!bus) + return -ENOMEM; + + pci_fixup_irqs(pci_common_swizzle, of_irq_parse_and_map_pci); + pci_assign_unassigned_bus_resources(bus); + + return 0; +} + +static const struct of_device_id versatile_pci_of_match[] = { + { .compatible = "arm,versatile-pci", }, + { }, +}; +MODULE_DEVICE_TABLE(of, versatile_pci_of_match); + +static struct platform_driver versatile_pci_driver = { + .driver = { + .name = "versatile-pci", + .of_match_table = versatile_pci_of_match, + }, + .probe = versatile_pci_probe, +}; +module_platform_driver(versatile_pci_driver); + +MODULE_DESCRIPTION("Versatile PCI driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c index b1d0596..aab5547 100644 --- a/drivers/pci/host/pci-xgene.c +++ b/drivers/pci/host/pci-xgene.c @@ -16,7 +16,7 @@ * GNU General Public License for more details. * */ -#include <linux/clk-private.h> +#include <linux/clk.h> #include <linux/delay.h> #include <linux/io.h> #include <linux/jiffies.h> @@ -74,92 +74,6 @@ static inline u32 pcie_bar_low_val(u32 addr, u32 flags) return (addr & PCI_BASE_ADDRESS_MEM_MASK) | flags; } -/* PCIe Configuration Out/In */ -static inline void xgene_pcie_cfg_out32(void __iomem *addr, int offset, u32 val) -{ - writel(val, addr + offset); -} - -static inline void xgene_pcie_cfg_out16(void __iomem *addr, int offset, u16 val) -{ - u32 val32 = readl(addr + (offset & ~0x3)); - - switch (offset & 0x3) { - case 2: - val32 &= ~0xFFFF0000; - val32 |= (u32)val << 16; - break; - case 0: - default: - val32 &= ~0xFFFF; - val32 |= val; - break; - } - writel(val32, addr + (offset & ~0x3)); -} - -static inline void xgene_pcie_cfg_out8(void __iomem *addr, int offset, u8 val) -{ - u32 val32 = readl(addr + (offset & ~0x3)); - - switch (offset & 0x3) { - case 0: - val32 &= ~0xFF; - val32 |= val; - break; - case 1: - val32 &= ~0xFF00; - val32 |= (u32)val << 8; - break; - case 2: - val32 &= ~0xFF0000; - val32 |= (u32)val << 16; - break; - case 3: - default: - val32 &= ~0xFF000000; - val32 |= (u32)val << 24; - break; - } - writel(val32, addr + (offset & ~0x3)); -} - -static inline void xgene_pcie_cfg_in32(void __iomem *addr, int offset, u32 *val) -{ - *val = readl(addr + offset); -} - -static inline void xgene_pcie_cfg_in16(void __iomem *addr, int offset, u32 *val) -{ - *val = readl(addr + (offset & ~0x3)); - - switch (offset & 0x3) { - case 2: - *val >>= 16; - break; - } - - *val &= 0xFFFF; -} - -static inline void xgene_pcie_cfg_in8(void __iomem *addr, int offset, u32 *val) -{ - *val = readl(addr + (offset & ~0x3)); - - switch (offset & 0x3) { - case 3: - *val = *val >> 24; - break; - case 2: - *val = *val >> 16; - break; - case 1: - *val = *val >> 8; - break; - } - *val &= 0xFF; -} - /* * When the address bit [17:16] is 2'b01, the Configuration access will be * treated as Type 1 and it will be forwarded to external PCIe device. @@ -213,69 +127,23 @@ static bool xgene_pcie_hide_rc_bars(struct pci_bus *bus, int offset) return false; } -static int xgene_pcie_read_config(struct pci_bus *bus, unsigned int devfn, - int offset, int len, u32 *val) -{ - struct xgene_pcie_port *port = bus->sysdata; - void __iomem *addr; - - if ((pci_is_root_bus(bus) && devfn != 0) || !port->link_up) - return PCIBIOS_DEVICE_NOT_FOUND; - - if (xgene_pcie_hide_rc_bars(bus, offset)) { - *val = 0; - return PCIBIOS_SUCCESSFUL; - } - - xgene_pcie_set_rtdid_reg(bus, devfn); - addr = xgene_pcie_get_cfg_base(bus); - switch (len) { - case 1: - xgene_pcie_cfg_in8(addr, offset, val); - break; - case 2: - xgene_pcie_cfg_in16(addr, offset, val); - break; - default: - xgene_pcie_cfg_in32(addr, offset, val); - break; - } - - return PCIBIOS_SUCCESSFUL; -} - -static int xgene_pcie_write_config(struct pci_bus *bus, unsigned int devfn, - int offset, int len, u32 val) +static int xgene_pcie_map_bus(struct pci_bus *bus, unsigned int devfn, + int offset) { struct xgene_pcie_port *port = bus->sysdata; - void __iomem *addr; - if ((pci_is_root_bus(bus) && devfn != 0) || !port->link_up) - return PCIBIOS_DEVICE_NOT_FOUND; - - if (xgene_pcie_hide_rc_bars(bus, offset)) - return PCIBIOS_SUCCESSFUL; + if ((pci_is_root_bus(bus) && devfn != 0) || !port->link_up || + xgene_pcie_hide_rc_bars(bus, offset)) + return NULL; xgene_pcie_set_rtdid_reg(bus, devfn); - addr = xgene_pcie_get_cfg_base(bus); - switch (len) { - case 1: - xgene_pcie_cfg_out8(addr, offset, (u8)val); - break; - case 2: - xgene_pcie_cfg_out16(addr, offset, (u16)val); - break; - default: - xgene_pcie_cfg_out32(addr, offset, val); - break; - } - - return PCIBIOS_SUCCESSFUL; + return xgene_pcie_get_cfg_base(bus); } static struct pci_ops xgene_pcie_ops = { - .read = xgene_pcie_read_config, - .write = xgene_pcie_write_config + .map_bus = xgene_pcie_map_bus, + .read = pci_generic_config_read32, + .write = pci_generic_config_write32, }; static u64 xgene_pcie_set_ib_mask(void __iomem *csr_base, u32 addr, @@ -401,11 +269,11 @@ static int xgene_pcie_map_ranges(struct xgene_pcie_port *port, struct list_head *res, resource_size_t io_base) { - struct pci_host_bridge_window *window; + struct resource_entry *window; struct device *dev = port->dev; int ret; - list_for_each_entry(window, res, list) { + resource_list_for_each_entry(window, res) { struct resource *res = window->res; u64 restype = resource_type(res); diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c index 17ca986..1f4ea6f 100644 --- a/drivers/pci/host/pcie-designware.c +++ b/drivers/pci/host/pcie-designware.c @@ -511,9 +511,6 @@ int __init dw_pcie_host_init(struct pcie_port *pp) dw_pci.private_data = (void **)&pp; pci_common_init_dev(pp->dev, &dw_pci); -#ifdef CONFIG_PCI_DOMAINS - dw_pci.domain++; -#endif return 0; } diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/host/pcie-rcar.c index 748786c..c57bd0a 100644 --- a/drivers/pci/host/pcie-rcar.c +++ b/drivers/pci/host/pcie-rcar.c @@ -397,9 +397,6 @@ static void rcar_pcie_enable(struct rcar_pcie *pcie) #endif pci_common_init_dev(&pdev->dev, &rcar_pci); -#ifdef CONFIG_PCI_DOMAINS - rcar_pci.domain++; -#endif } static int phy_wait_for_ack(struct rcar_pcie *pcie) @@ -757,7 +754,7 @@ static int rcar_pcie_get_resources(struct platform_device *pdev, goto err_map_reg; i = irq_of_parse_and_map(pdev->dev.of_node, 0); - if (i < 0) { + if (!i) { dev_err(pcie->dev, "cannot get platform resources for msi interrupt\n"); err = -ENOENT; goto err_map_reg; @@ -765,7 +762,7 @@ static int rcar_pcie_get_resources(struct platform_device *pdev, pcie->msi.irq1 = i; i = irq_of_parse_and_map(pdev->dev.of_node, 1); - if (i < 0) { + if (!i) { dev_err(pcie->dev, "cannot get platform resources for msi interrupt\n"); err = -ENOENT; goto err_map_reg; diff --git a/drivers/pci/host/pcie-xilinx.c b/drivers/pci/host/pcie-xilinx.c index ef3ebaf..f1a06a0 100644 --- a/drivers/pci/host/pcie-xilinx.c +++ b/drivers/pci/host/pcie-xilinx.c @@ -148,10 +148,10 @@ static inline bool xilinx_pcie_link_is_up(struct xilinx_pcie_port *port) */ static void xilinx_pcie_clear_err_interrupts(struct xilinx_pcie_port *port) { - u32 val = pcie_read(port, XILINX_PCIE_REG_RPEFR); + unsigned long val = pcie_read(port, XILINX_PCIE_REG_RPEFR); if (val & XILINX_PCIE_RPEFR_ERR_VALID) { - dev_dbg(port->dev, "Requester ID %d\n", + dev_dbg(port->dev, "Requester ID %lu\n", val & XILINX_PCIE_RPEFR_REQ_ID); pcie_write(port, XILINX_PCIE_RPEFR_ALL_MASK, XILINX_PCIE_REG_RPEFR); @@ -189,7 +189,7 @@ static bool xilinx_pcie_valid_device(struct pci_bus *bus, unsigned int devfn) } /** - * xilinx_pcie_config_base - Get configuration base + * xilinx_pcie_map_bus - Get configuration base * @bus: PCI Bus structure * @devfn: Device/function * @where: Offset from base @@ -197,96 +197,26 @@ static bool xilinx_pcie_valid_device(struct pci_bus *bus, unsigned int devfn) * Return: Base address of the configuration space needed to be * accessed. */ -static void __iomem *xilinx_pcie_config_base(struct pci_bus *bus, - unsigned int devfn, int where) +static void __iomem *xilinx_pcie_map_bus(struct pci_bus *bus, + unsigned int devfn, int where) { struct xilinx_pcie_port *port = sys_to_pcie(bus->sysdata); int relbus; + if (!xilinx_pcie_valid_device(bus, devfn)) + return NULL; + relbus = (bus->number << ECAM_BUS_NUM_SHIFT) | (devfn << ECAM_DEV_NUM_SHIFT); return port->reg_base + relbus + where; } -/** - * xilinx_pcie_read_config - Read configuration space - * @bus: PCI Bus structure - * @devfn: Device/function - * @where: Offset from base - * @size: Byte/word/dword - * @val: Value to be read - * - * Return: PCIBIOS_SUCCESSFUL on success - * PCIBIOS_DEVICE_NOT_FOUND on failure - */ -static int xilinx_pcie_read_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 *val) -{ - void __iomem *addr; - - if (!xilinx_pcie_valid_device(bus, devfn)) { - *val = 0xFFFFFFFF; - return PCIBIOS_DEVICE_NOT_FOUND; - } - - addr = xilinx_pcie_config_base(bus, devfn, where); - - switch (size) { - case 1: - *val = readb(addr); - break; - case 2: - *val = readw(addr); - break; - default: - *val = readl(addr); - break; - } - - return PCIBIOS_SUCCESSFUL; -} - -/** - * xilinx_pcie_write_config - Write configuration space - * @bus: PCI Bus structure - * @devfn: Device/function - * @where: Offset from base - * @size: Byte/word/dword - * @val: Value to be written to device - * - * Return: PCIBIOS_SUCCESSFUL on success - * PCIBIOS_DEVICE_NOT_FOUND on failure - */ -static int xilinx_pcie_write_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 val) -{ - void __iomem *addr; - - if (!xilinx_pcie_valid_device(bus, devfn)) - return PCIBIOS_DEVICE_NOT_FOUND; - - addr = xilinx_pcie_config_base(bus, devfn, where); - - switch (size) { - case 1: - writeb(val, addr); - break; - case 2: - writew(val, addr); - break; - default: - writel(val, addr); - break; - } - - return PCIBIOS_SUCCESSFUL; -} - /* PCIe operations */ static struct pci_ops xilinx_pcie_ops = { - .read = xilinx_pcie_read_config, - .write = xilinx_pcie_write_config, + .map_bus = xilinx_pcie_map_bus, + .read = pci_generic_config_read, + .write = pci_generic_config_write, }; /* MSI functions */ @@ -737,7 +667,7 @@ static int xilinx_pcie_parse_and_add_res(struct xilinx_pcie_port *port) resource_size_t offset; struct of_pci_range_parser parser; struct of_pci_range range; - struct pci_host_bridge_window *win; + struct resource_entry *win; int err = 0, mem_resno = 0; /* Get the ranges */ @@ -807,7 +737,7 @@ static int xilinx_pcie_parse_and_add_res(struct xilinx_pcie_port *port) free_resources: release_child_resources(&iomem_resource); - list_for_each_entry(win, &port->resources, list) + resource_list_for_each_entry(win, &port->resources) devm_kfree(dev, win->res); pci_free_resource_list(&port->resources); diff --git a/drivers/pci/hotplug/cpci_hotplug_core.c b/drivers/pci/hotplug/cpci_hotplug_core.c index a5a7fd8..46db293 100644 --- a/drivers/pci/hotplug/cpci_hotplug_core.c +++ b/drivers/pci/hotplug/cpci_hotplug_core.c @@ -214,8 +214,7 @@ static void release_slot(struct hotplug_slot *hotplug_slot) kfree(slot->hotplug_slot->info); kfree(slot->hotplug_slot); - if (slot->dev) - pci_dev_put(slot->dev); + pci_dev_put(slot->dev); kfree(slot); } diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c index ff32e85..f052e95 100644 --- a/drivers/pci/hotplug/pciehp_ctrl.c +++ b/drivers/pci/hotplug/pciehp_ctrl.c @@ -532,8 +532,6 @@ static void interrupt_event_handler(struct work_struct *work) pciehp_green_led_off(p_slot); break; case INT_PRESENCE_ON: - if (!HP_SUPR_RM(ctrl)) - break; ctrl_dbg(ctrl, "Surprise Insertion\n"); handle_surprise_event(p_slot); break; diff --git a/drivers/pci/hotplug/sgi_hotplug.c b/drivers/pci/hotplug/sgi_hotplug.c index bada2099..c32fb78 100644 --- a/drivers/pci/hotplug/sgi_hotplug.c +++ b/drivers/pci/hotplug/sgi_hotplug.c @@ -475,7 +475,7 @@ static int disable_slot(struct hotplug_slot *bss_hotplug_slot) struct slot *slot = bss_hotplug_slot->private; struct pci_dev *dev, *temp; int rc; - acpi_owner_id ssdt_id = 0; + acpi_handle ssdt_hdl = NULL; /* Acquire update access to the bus */ mutex_lock(&sn_hotplug_mutex); @@ -522,7 +522,7 @@ static int disable_slot(struct hotplug_slot *bss_hotplug_slot) if (ACPI_SUCCESS(ret) && (adr>>16) == (slot->device_num + 1)) { /* retain the owner id */ - acpi_get_id(chandle, &ssdt_id); + ssdt_hdl = chandle; ret = acpi_bus_get_device(chandle, &device); @@ -547,12 +547,13 @@ static int disable_slot(struct hotplug_slot *bss_hotplug_slot) pci_unlock_rescan_remove(); /* Remove the SSDT for the slot from the ACPI namespace */ - if (SN_ACPI_BASE_SUPPORT() && ssdt_id) { + if (SN_ACPI_BASE_SUPPORT() && ssdt_hdl) { acpi_status ret; - ret = acpi_unload_table_id(ssdt_id); + ret = acpi_unload_parent_table(ssdt_hdl); if (ACPI_FAILURE(ret)) { - printk(KERN_ERR "%s: acpi_unload_table_id failed (0x%x) for id %d\n", - __func__, ret, ssdt_id); + acpi_handle_err(ssdt_hdl, + "%s: acpi_unload_parent_table failed (0x%x)\n", + __func__, ret); /* try to continue on */ } } diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index fd60806..c3e7dfc 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -694,11 +694,16 @@ static void __iomem *msix_map_region(struct pci_dev *dev, unsigned nr_entries) { resource_size_t phys_addr; u32 table_offset; + unsigned long flags; u8 bir; pci_read_config_dword(dev, dev->msix_cap + PCI_MSIX_TABLE, &table_offset); bir = (u8)(table_offset & PCI_MSIX_TABLE_BIR); + flags = pci_resource_flags(dev, bir); + if (!flags || (flags & IORESOURCE_UNSET)) + return NULL; + table_offset &= PCI_MSIX_TABLE_OFFSET; phys_addr = pci_resource_start(dev, bir) + table_offset; diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index 3542150..4890639 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -501,12 +501,29 @@ static int acpi_pci_run_wake(struct pci_dev *dev, bool enable) return 0; } +static bool acpi_pci_need_resume(struct pci_dev *dev) +{ + struct acpi_device *adev = ACPI_COMPANION(&dev->dev); + + if (!adev || !acpi_device_power_manageable(adev)) + return false; + + if (device_may_wakeup(&dev->dev) != !!adev->wakeup.prepare_count) + return true; + + if (acpi_target_system_state() == ACPI_STATE_S0) + return false; + + return !!adev->power.flags.dsw_present; +} + static struct pci_platform_pm_ops acpi_pci_platform_pm = { .is_manageable = acpi_pci_power_manageable, .set_state = acpi_pci_set_power_state, .choose_state = acpi_pci_choose_state, .sleep_wake = acpi_pci_sleep_wake, .run_wake = acpi_pci_run_wake, + .need_resume = acpi_pci_need_resume, }; void acpi_pci_add_bus(struct pci_bus *bus) diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 887e6bd..3cb2210 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -653,7 +653,6 @@ static bool pci_has_legacy_pm_support(struct pci_dev *pci_dev) static int pci_pm_prepare(struct device *dev) { struct device_driver *drv = dev->driver; - int error = 0; /* * Devices having power.ignore_children set may still be necessary for @@ -662,10 +661,12 @@ static int pci_pm_prepare(struct device *dev) if (dev->power.ignore_children) pm_runtime_resume(dev); - if (drv && drv->pm && drv->pm->prepare) - error = drv->pm->prepare(dev); - - return error; + if (drv && drv->pm && drv->pm->prepare) { + int error = drv->pm->prepare(dev); + if (error) + return error; + } + return pci_dev_keep_suspended(to_pci_dev(dev)); } @@ -1383,7 +1384,7 @@ static int pci_uevent(struct device *dev, struct kobj_uevent_env *env) if (add_uevent_var(env, "PCI_SLOT_NAME=%s", pci_name(pdev))) return -ENOMEM; - if (add_uevent_var(env, "MODALIAS=pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x", + if (add_uevent_var(env, "MODALIAS=pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02X", pdev->vendor, pdev->device, pdev->subsystem_vendor, pdev->subsystem_device, (u8)(pdev->class >> 16), (u8)(pdev->class >> 8), diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index e9d4fd8..81f06e8 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -10,6 +10,8 @@ #include <linux/kernel.h> #include <linux/delay.h> #include <linux/init.h> +#include <linux/of.h> +#include <linux/of_pci.h> #include <linux/pci.h> #include <linux/pm.h> #include <linux/slab.h> @@ -521,6 +523,11 @@ static inline int platform_pci_run_wake(struct pci_dev *dev, bool enable) pci_platform_pm->run_wake(dev, enable) : -ENODEV; } +static inline bool platform_pci_need_resume(struct pci_dev *dev) +{ + return pci_platform_pm ? pci_platform_pm->need_resume(dev) : false; +} + /** * pci_raw_set_power_state - Use PCI PM registers to set the power state of * given PCI device @@ -1999,6 +2006,27 @@ bool pci_dev_run_wake(struct pci_dev *dev) } EXPORT_SYMBOL_GPL(pci_dev_run_wake); +/** + * pci_dev_keep_suspended - Check if the device can stay in the suspended state. + * @pci_dev: Device to check. + * + * Return 'true' if the device is runtime-suspended, it doesn't have to be + * reconfigured due to wakeup settings difference between system and runtime + * suspend and the current power state of it is suitable for the upcoming + * (system) transition. + */ +bool pci_dev_keep_suspended(struct pci_dev *pci_dev) +{ + struct device *dev = &pci_dev->dev; + + if (!pm_runtime_suspended(dev) + || (device_can_wakeup(dev) && !device_may_wakeup(dev)) + || platform_pci_need_resume(pci_dev)) + return false; + + return pci_target_state(pci_dev) == pci_dev->current_state; +} + void pci_config_pm_runtime_get(struct pci_dev *pdev) { struct device *dev = &pdev->dev; @@ -3197,7 +3225,7 @@ static int pci_pm_reset(struct pci_dev *dev, int probe) { u16 csr; - if (!dev->pm_cap) + if (!dev->pm_cap || dev->dev_flags & PCI_DEV_FLAGS_NO_PM_RESET) return -ENOTTY; pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &csr); @@ -4471,6 +4499,53 @@ int pci_get_new_domain_nr(void) { return atomic_inc_return(&__domain_nr); } + +#ifdef CONFIG_PCI_DOMAINS_GENERIC +void pci_bus_assign_domain_nr(struct pci_bus *bus, struct device *parent) +{ + static int use_dt_domains = -1; + int domain = of_get_pci_domain_nr(parent->of_node); + + /* + * Check DT domain and use_dt_domains values. + * + * If DT domain property is valid (domain >= 0) and + * use_dt_domains != 0, the DT assignment is valid since this means + * we have not previously allocated a domain number by using + * pci_get_new_domain_nr(); we should also update use_dt_domains to + * 1, to indicate that we have just assigned a domain number from + * DT. + * + * If DT domain property value is not valid (ie domain < 0), and we + * have not previously assigned a domain number from DT + * (use_dt_domains != 1) we should assign a domain number by + * using the: + * + * pci_get_new_domain_nr() + * + * API and update the use_dt_domains value to keep track of method we + * are using to assign domain numbers (use_dt_domains = 0). + * + * All other combinations imply we have a platform that is trying + * to mix domain numbers obtained from DT and pci_get_new_domain_nr(), + * which is a recipe for domain mishandling and it is prevented by + * invalidating the domain value (domain = -1) and printing a + * corresponding error. + */ + if (domain >= 0 && use_dt_domains) { + use_dt_domains = 1; + } else if (domain < 0 && use_dt_domains != 1) { + use_dt_domains = 0; + domain = pci_get_new_domain_nr(); + } else { + dev_err(parent, "Node %s has inconsistent \"linux,pci-domain\" property in DT\n", + parent->of_node->full_name); + domain = -1; + } + + bus->domain_nr = domain; +} +#endif #endif /** diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index d54632a..4091f82 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -50,6 +50,10 @@ int pci_probe_reset_function(struct pci_dev *dev); * for given device (the device's wake-up capability has to be * enabled by @sleep_wake for this feature to work) * + * @need_resume: returns 'true' if the given device (which is currently + * suspended) needs to be resumed to be configured for system + * wakeup. + * * If given platform is generally capable of power managing PCI devices, all of * these callbacks are mandatory. */ @@ -59,6 +63,7 @@ struct pci_platform_pm_ops { pci_power_t (*choose_state)(struct pci_dev *dev); int (*sleep_wake)(struct pci_dev *dev, bool enable); int (*run_wake)(struct pci_dev *dev, bool enable); + bool (*need_resume)(struct pci_dev *dev); }; int pci_set_platform_pm(struct pci_platform_pm_ops *ops); @@ -67,6 +72,7 @@ void pci_power_up(struct pci_dev *dev); void pci_disable_enabled_device(struct pci_dev *dev); int pci_finish_runtime_suspend(struct pci_dev *dev); int __pci_pme_wakeup(struct pci_dev *dev, void *ign); +bool pci_dev_keep_suspended(struct pci_dev *dev); void pci_config_pm_runtime_get(struct pci_dev *dev); void pci_config_pm_runtime_put(struct pci_dev *dev); void pci_pm_init(struct pci_dev *dev); diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index e1e7026..820740a 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -859,7 +859,10 @@ static ssize_t link_state_store(struct device *dev, { struct pci_dev *pdev = to_pci_dev(dev); struct pcie_link_state *link, *root = pdev->link_state->root; - u32 val = buf[0] - '0', state = 0; + u32 val, state = 0; + + if (kstrtouint(buf, 10, &val)) + return -EINVAL; if (aspm_disabled) return -EPERM; @@ -900,15 +903,14 @@ static ssize_t clk_ctl_store(struct device *dev, size_t n) { struct pci_dev *pdev = to_pci_dev(dev); - int state; + bool state; - if (n < 1) + if (strtobool(buf, &state)) return -EINVAL; - state = buf[0]-'0'; down_read(&pci_bus_sem); mutex_lock(&aspm_lock); - pcie_set_clkpm_nocheck(pdev->link_state, !!state); + pcie_set_clkpm_nocheck(pdev->link_state, state); mutex_unlock(&aspm_lock); up_read(&pci_bus_sem); diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 23212f8..8d2f400 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1895,7 +1895,7 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus, int error; struct pci_host_bridge *bridge; struct pci_bus *b, *b2; - struct pci_host_bridge_window *window, *n; + struct resource_entry *window, *n; struct resource *res; resource_size_t offset; char bus_addr[64]; @@ -1959,8 +1959,8 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus, printk(KERN_INFO "PCI host bridge to bus %s\n", dev_name(&b->dev)); /* Add initial resources to the bus */ - list_for_each_entry_safe(window, n, resources, list) { - list_move_tail(&window->list, &bridge->windows); + resource_list_for_each_entry_safe(window, n, resources) { + list_move_tail(&window->node, &bridge->windows); res = window->res; offset = window->offset; if (res->flags & IORESOURCE_BUS) @@ -2060,12 +2060,12 @@ void pci_bus_release_busn_res(struct pci_bus *b) struct pci_bus *pci_scan_root_bus(struct device *parent, int bus, struct pci_ops *ops, void *sysdata, struct list_head *resources) { - struct pci_host_bridge_window *window; + struct resource_entry *window; bool found = false; struct pci_bus *b; int max; - list_for_each_entry(window, resources, list) + resource_list_for_each_entry(window, resources) if (window->res->flags & IORESOURCE_BUS) { found = true; break; diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 903d507..85f247e 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3076,6 +3076,27 @@ static void quirk_no_bus_reset(struct pci_dev *dev) */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0030, quirk_no_bus_reset); +static void quirk_no_pm_reset(struct pci_dev *dev) +{ + /* + * We can't do a bus reset on root bus devices, but an ineffective + * PM reset may be better than nothing. + */ + if (!pci_is_root_bus(dev->bus)) + dev->dev_flags |= PCI_DEV_FLAGS_NO_PM_RESET; +} + +/* + * Some AMD/ATI GPUS (HD8570 - Oland) report that a D3hot->D0 transition + * causes a reset (i.e., they advertise NoSoftRst-). This transition seems + * to have no effect on the device: it retains the framebuffer contents and + * monitor sync. Advertising this support makes other layers, like VFIO, + * assume pci_reset_function() is viable for this device. Mark it as + * unavailable to skip it when testing reset methods. + */ +DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_ATI, PCI_ANY_ID, + PCI_CLASS_DISPLAY_VGA, 8, quirk_no_pm_reset); + #ifdef CONFIG_ACPI /* * Apple: Shutdown Cactus Ridge Thunderbolt controller. @@ -3576,6 +3597,44 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_JMICRON, quirk_dma_func1_alias); /* + * Some devices DMA with the wrong devfn, not just the wrong function. + * quirk_fixed_dma_alias() uses this table to create fixed aliases, where + * the alias is "fixed" and independent of the device devfn. + * + * For example, the Adaptec 3405 is a PCIe card with an Intel 80333 I/O + * processor. To software, this appears as a PCIe-to-PCI/X bridge with a + * single device on the secondary bus. In reality, the single exposed + * device at 0e.0 is the Address Translation Unit (ATU) of the controller + * that provides a bridge to the internal bus of the I/O processor. The + * controller supports private devices, which can be hidden from PCI config + * space. In the case of the Adaptec 3405, a private device at 01.0 + * appears to be the DMA engine, which therefore needs to become a DMA + * alias for the device. + */ +static const struct pci_device_id fixed_dma_alias_tbl[] = { + { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285, + PCI_VENDOR_ID_ADAPTEC2, 0x02bb), /* Adaptec 3405 */ + .driver_data = PCI_DEVFN(1, 0) }, + { 0 } +}; + +static void quirk_fixed_dma_alias(struct pci_dev *dev) +{ + const struct pci_device_id *id; + + id = pci_match_id(fixed_dma_alias_tbl, dev); + if (id) { + dev->dma_alias_devfn = id->driver_data; + dev->dev_flags |= PCI_DEV_FLAGS_DMA_ALIAS_DEVFN; + dev_info(&dev->dev, "Enabling fixed DMA alias to %02x.%d\n", + PCI_SLOT(dev->dma_alias_devfn), + PCI_FUNC(dev->dma_alias_devfn)); + } +} + +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADAPTEC2, 0x0285, quirk_fixed_dma_alias); + +/* * A few PCIe-to-PCI bridges fail to expose a PCIe capability, resulting in * using the wrong DMA alias for the device. Some of these devices can be * used as either forward or reverse bridges, so we need to test whether the @@ -3678,6 +3737,9 @@ static const u16 pci_quirk_intel_pch_acs_ids[] = { 0x9c98, 0x9c99, 0x9c9a, 0x9c9b, /* Patsburg (X79) PCH */ 0x1d10, 0x1d12, 0x1d14, 0x1d16, 0x1d18, 0x1d1a, 0x1d1c, 0x1d1e, + /* Wellsburg (X99) PCH */ + 0x8d10, 0x8d11, 0x8d12, 0x8d13, 0x8d14, 0x8d15, 0x8d16, 0x8d17, + 0x8d18, 0x8d19, 0x8d1a, 0x8d1b, 0x8d1c, 0x8d1d, 0x8d1e, }; static bool pci_quirk_intel_pch_acs_match(struct pci_dev *dev) @@ -3761,6 +3823,8 @@ static const struct pci_dev_acs_enabled { { PCI_VENDOR_ID_INTEL, 0x1551, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x1558, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_pch_acs }, + { 0x19a2, 0x710, pci_quirk_mf_endpoint_acs }, /* Emulex BE3-R */ + { 0x10df, 0x720, pci_quirk_mf_endpoint_acs }, /* Emulex Skyhawk-R */ { 0 } }; diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c index f955edb..eb0ad53 100644 --- a/drivers/pci/rom.c +++ b/drivers/pci/rom.c @@ -71,6 +71,7 @@ size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size) { void __iomem *image; int last_image; + unsigned length; image = rom; do { @@ -93,9 +94,9 @@ size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size) if (readb(pds + 3) != 'R') break; last_image = readb(pds + 21) & 0x80; - /* this length is reliable */ - image += readw(pds + 16) * 512; - } while (!last_image); + length = readw(pds + 16); + image += length * 512; + } while (length && !last_image); /* never return a size larger than the PCI resource window */ /* there are known ROMs that get the size wrong */ diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c index 66977eb..ff0356f 100644 --- a/drivers/pnp/pnpacpi/rsparser.c +++ b/drivers/pnp/pnpacpi/rsparser.c @@ -180,20 +180,21 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res, struct pnp_dev *dev = data; struct acpi_resource_dma *dma; struct acpi_resource_vendor_typed *vendor_typed; - struct resource r = {0}; + struct resource_win win = {{0}, 0}; + struct resource *r = &win.res; int i, flags; - if (acpi_dev_resource_address_space(res, &r) - || acpi_dev_resource_ext_address_space(res, &r)) { - pnp_add_resource(dev, &r); + if (acpi_dev_resource_address_space(res, &win) + || acpi_dev_resource_ext_address_space(res, &win)) { + pnp_add_resource(dev, &win.res); return AE_OK; } - r.flags = 0; - if (acpi_dev_resource_interrupt(res, 0, &r)) { - pnpacpi_add_irqresource(dev, &r); - for (i = 1; acpi_dev_resource_interrupt(res, i, &r); i++) - pnpacpi_add_irqresource(dev, &r); + r->flags = 0; + if (acpi_dev_resource_interrupt(res, 0, r)) { + pnpacpi_add_irqresource(dev, r); + for (i = 1; acpi_dev_resource_interrupt(res, i, r); i++) + pnpacpi_add_irqresource(dev, r); if (i > 1) { /* @@ -209,7 +210,7 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res, } } return AE_OK; - } else if (r.flags & IORESOURCE_DISABLED) { + } else if (r->flags & IORESOURCE_DISABLED) { pnp_add_irq_resource(dev, 0, IORESOURCE_DISABLED); return AE_OK; } @@ -218,13 +219,13 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res, case ACPI_RESOURCE_TYPE_MEMORY24: case ACPI_RESOURCE_TYPE_MEMORY32: case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: - if (acpi_dev_resource_memory(res, &r)) - pnp_add_resource(dev, &r); + if (acpi_dev_resource_memory(res, r)) + pnp_add_resource(dev, r); break; case ACPI_RESOURCE_TYPE_IO: case ACPI_RESOURCE_TYPE_FIXED_IO: - if (acpi_dev_resource_io(res, &r)) - pnp_add_resource(dev, &r); + if (acpi_dev_resource_io(res, r)) + pnp_add_resource(dev, r); break; case ACPI_RESOURCE_TYPE_DMA: dma = &res->data.dma; @@ -410,12 +411,12 @@ static __init void pnpacpi_parse_address_option(struct pnp_dev *dev, if (p->resource_type == ACPI_MEMORY_RANGE) { if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY) flags = IORESOURCE_MEM_WRITEABLE; - pnp_register_mem_resource(dev, option_flags, p->minimum, - p->minimum, 0, p->address_length, + pnp_register_mem_resource(dev, option_flags, p->address.minimum, + p->address.minimum, 0, p->address.address_length, flags); } else if (p->resource_type == ACPI_IO_RANGE) - pnp_register_port_resource(dev, option_flags, p->minimum, - p->minimum, 0, p->address_length, + pnp_register_port_resource(dev, option_flags, p->address.minimum, + p->address.minimum, 0, p->address.address_length, IORESOURCE_IO_FIXED); } @@ -429,12 +430,12 @@ static __init void pnpacpi_parse_ext_address_option(struct pnp_dev *dev, if (p->resource_type == ACPI_MEMORY_RANGE) { if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY) flags = IORESOURCE_MEM_WRITEABLE; - pnp_register_mem_resource(dev, option_flags, p->minimum, - p->minimum, 0, p->address_length, + pnp_register_mem_resource(dev, option_flags, p->address.minimum, + p->address.minimum, 0, p->address.address_length, flags); } else if (p->resource_type == ACPI_IO_RANGE) - pnp_register_port_resource(dev, option_flags, p->minimum, - p->minimum, 0, p->address_length, + pnp_register_port_resource(dev, option_flags, p->address.minimum, + p->address.minimum, 0, p->address.address_length, IORESOURCE_IO_FIXED); } diff --git a/drivers/rapidio/devices/tsi721.c b/drivers/rapidio/devices/tsi721.c index 8bcfecd..eeca70d 100644 --- a/drivers/rapidio/devices/tsi721.c +++ b/drivers/rapidio/devices/tsi721.c @@ -2430,7 +2430,7 @@ static int tsi721_probe(struct pci_dev *pdev, pcie_capability_clear_and_set_word(pdev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_READRQ | PCI_EXP_DEVCTL_RELAX_EN | PCI_EXP_DEVCTL_NOSNOOP_EN, - 0x2 << MAX_READ_REQUEST_SZ_SHIFT); + PCI_EXP_DEVCTL_READRQ_512B); /* Adjust PCIe completion timeout. */ pcie_capability_clear_and_set_word(pdev, PCI_EXP_DEVCTL2, 0xf, 0x2); diff --git a/drivers/rapidio/devices/tsi721.h b/drivers/rapidio/devices/tsi721.h index a7b4268..9d25025 100644 --- a/drivers/rapidio/devices/tsi721.h +++ b/drivers/rapidio/devices/tsi721.h @@ -72,8 +72,6 @@ #define TSI721_MSIXPBA_OFFSET 0x2a000 #define TSI721_PCIECFG_EPCTL 0x400 -#define MAX_READ_REQUEST_SZ_SHIFT 12 - /* * Event Management Registers */ diff --git a/drivers/scsi/esas2r/esas2r_init.c b/drivers/scsi/esas2r/esas2r_init.c index 6776931..78ce4d61 100644 --- a/drivers/scsi/esas2r/esas2r_init.c +++ b/drivers/scsi/esas2r/esas2r_init.c @@ -813,12 +813,13 @@ static void esas2r_init_pci_cfg_space(struct esas2r_adapter *a) pci_read_config_word(a->pcid, pcie_cap_reg + PCI_EXP_DEVCTL, &devcontrol); - if ((devcontrol & PCI_EXP_DEVCTL_READRQ) > 0x2000) { + if ((devcontrol & PCI_EXP_DEVCTL_READRQ) > + PCI_EXP_DEVCTL_READRQ_512B) { esas2r_log(ESAS2R_LOG_INFO, "max read request size > 512B"); devcontrol &= ~PCI_EXP_DEVCTL_READRQ; - devcontrol |= 0x2000; + devcontrol |= PCI_EXP_DEVCTL_READRQ_512B; pci_write_config_word(a->pcid, pcie_cap_reg + PCI_EXP_DEVCTL, devcontrol); diff --git a/drivers/sfi/sfi_core.c b/drivers/sfi/sfi_core.c index 1e824fb..296db7a 100644 --- a/drivers/sfi/sfi_core.c +++ b/drivers/sfi/sfi_core.c @@ -161,7 +161,7 @@ static int sfi_verify_table(struct sfi_table_header *table) * Check for common case that we can re-use mapping to SYST, * which requires syst_pa, syst_va to be initialized. */ -struct sfi_table_header *sfi_map_table(u64 pa) +static struct sfi_table_header *sfi_map_table(u64 pa) { struct sfi_table_header *th; u32 length; @@ -189,7 +189,7 @@ struct sfi_table_header *sfi_map_table(u64 pa) * Undoes effect of sfi_map_table() by unmapping table * if it did not completely fit on same page as SYST. */ -void sfi_unmap_table(struct sfi_table_header *th) +static void sfi_unmap_table(struct sfi_table_header *th) { if (!TABLE_ON_PAGE(syst_va, th, th->len)) sfi_unmap_memory(th, TABLE_ON_PAGE(th, th, th->len) ? diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index aeb50bb..eaffb02 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -3452,8 +3452,6 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg) return status; } -#ifdef CONFIG_PM - int usb_remote_wakeup(struct usb_device *udev) { int status = 0; @@ -3512,16 +3510,6 @@ static int hub_handle_remote_wakeup(struct usb_hub *hub, unsigned int port, return connect_change; } -#else - -static int hub_handle_remote_wakeup(struct usb_hub *hub, unsigned int port, - u16 portstatus, u16 portchange) -{ - return 0; -} - -#endif - static int check_ports_changed(struct usb_hub *hub) { int port1; diff --git a/drivers/video/fbdev/atafb.c b/drivers/video/fbdev/atafb.c index 4953b65..cb9ee25 100644 --- a/drivers/video/fbdev/atafb.c +++ b/drivers/video/fbdev/atafb.c @@ -3118,8 +3118,7 @@ int __init atafb_init(void) printk("atafb_init: initializing Falcon hw\n"); fbhw = &falcon_switch; atafb_ops.fb_setcolreg = &falcon_setcolreg; - error = request_irq(IRQ_AUTO_4, falcon_vbl_switcher, - IRQ_TYPE_PRIO, + error = request_irq(IRQ_AUTO_4, falcon_vbl_switcher, 0, "framebuffer:modeswitch", falcon_vbl_switcher); if (error) diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index 3860d02..0b52d92 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -92,7 +92,6 @@ EXPORT_SYMBOL_GPL(balloon_stats); /* We increase/decrease in batches which fit in a page */ static xen_pfn_t frame_list[PAGE_SIZE / sizeof(unsigned long)]; -static DEFINE_PER_CPU(struct page *, balloon_scratch_page); /* List of ballooned pages, threaded through the mem_map array. */ @@ -423,22 +422,12 @@ static enum bp_state decrease_reservation(unsigned long nr_pages, gfp_t gfp) page = pfn_to_page(pfn); #ifdef CONFIG_XEN_HAVE_PVMMU - /* - * Ballooned out frames are effectively replaced with - * a scratch frame. Ensure direct mappings and the - * p2m are consistent. - */ if (!xen_feature(XENFEAT_auto_translated_physmap)) { if (!PageHighMem(page)) { - struct page *scratch_page = get_balloon_scratch_page(); - ret = HYPERVISOR_update_va_mapping( (unsigned long)__va(pfn << PAGE_SHIFT), - pfn_pte(page_to_pfn(scratch_page), - PAGE_KERNEL_RO), 0); + __pte_ma(0), 0); BUG_ON(ret); - - put_balloon_scratch_page(); } __set_phys_to_machine(pfn, INVALID_P2M_ENTRY); } @@ -500,18 +489,6 @@ static void balloon_process(struct work_struct *work) mutex_unlock(&balloon_mutex); } -struct page *get_balloon_scratch_page(void) -{ - struct page *ret = get_cpu_var(balloon_scratch_page); - BUG_ON(ret == NULL); - return ret; -} - -void put_balloon_scratch_page(void) -{ - put_cpu_var(balloon_scratch_page); -} - /* Resets the Xen limit, sets new target, and kicks off processing. */ void balloon_set_new_target(unsigned long target) { @@ -605,61 +582,13 @@ static void __init balloon_add_region(unsigned long start_pfn, } } -static int alloc_balloon_scratch_page(int cpu) -{ - if (per_cpu(balloon_scratch_page, cpu) != NULL) - return 0; - - per_cpu(balloon_scratch_page, cpu) = alloc_page(GFP_KERNEL); - if (per_cpu(balloon_scratch_page, cpu) == NULL) { - pr_warn("Failed to allocate balloon_scratch_page for cpu %d\n", cpu); - return -ENOMEM; - } - - return 0; -} - - -static int balloon_cpu_notify(struct notifier_block *self, - unsigned long action, void *hcpu) -{ - int cpu = (long)hcpu; - switch (action) { - case CPU_UP_PREPARE: - if (alloc_balloon_scratch_page(cpu)) - return NOTIFY_BAD; - break; - default: - break; - } - return NOTIFY_OK; -} - -static struct notifier_block balloon_cpu_notifier = { - .notifier_call = balloon_cpu_notify, -}; - static int __init balloon_init(void) { - int i, cpu; + int i; if (!xen_domain()) return -ENODEV; - if (!xen_feature(XENFEAT_auto_translated_physmap)) { - register_cpu_notifier(&balloon_cpu_notifier); - - get_online_cpus(); - for_each_online_cpu(cpu) { - if (alloc_balloon_scratch_page(cpu)) { - put_online_cpus(); - unregister_cpu_notifier(&balloon_cpu_notifier); - return -ENOMEM; - } - } - put_online_cpus(); - } - pr_info("Initialising balloon driver\n"); balloon_stats.current_pages = xen_pv_domain() @@ -696,15 +625,4 @@ static int __init balloon_init(void) subsys_initcall(balloon_init); -static int __init balloon_clear(void) -{ - int cpu; - - for_each_possible_cpu(cpu) - per_cpu(balloon_scratch_page, cpu) = NULL; - - return 0; -} -early_initcall(balloon_clear); - MODULE_LICENSE("GPL"); diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c index 073b4a1..d5bb1a3 100644 --- a/drivers/xen/gntdev.c +++ b/drivers/xen/gntdev.c @@ -67,7 +67,7 @@ struct gntdev_priv { * Only populated if populate_freeable_maps == 1 */ struct list_head freeable_maps; /* lock protects maps and freeable_maps */ - spinlock_t lock; + struct mutex lock; struct mm_struct *mm; struct mmu_notifier mn; }; @@ -91,7 +91,9 @@ struct grant_map { struct gnttab_map_grant_ref *map_ops; struct gnttab_unmap_grant_ref *unmap_ops; struct gnttab_map_grant_ref *kmap_ops; + struct gnttab_unmap_grant_ref *kunmap_ops; struct page **pages; + unsigned long pages_vm_start; }; static int unmap_grant_pages(struct grant_map *map, int offset, int pages); @@ -118,12 +120,13 @@ static void gntdev_free_map(struct grant_map *map) return; if (map->pages) - free_xenballooned_pages(map->count, map->pages); + gnttab_free_pages(map->count, map->pages); kfree(map->pages); kfree(map->grants); kfree(map->map_ops); kfree(map->unmap_ops); kfree(map->kmap_ops); + kfree(map->kunmap_ops); kfree(map); } @@ -140,21 +143,24 @@ static struct grant_map *gntdev_alloc_map(struct gntdev_priv *priv, int count) add->map_ops = kcalloc(count, sizeof(add->map_ops[0]), GFP_KERNEL); add->unmap_ops = kcalloc(count, sizeof(add->unmap_ops[0]), GFP_KERNEL); add->kmap_ops = kcalloc(count, sizeof(add->kmap_ops[0]), GFP_KERNEL); + add->kunmap_ops = kcalloc(count, sizeof(add->kunmap_ops[0]), GFP_KERNEL); add->pages = kcalloc(count, sizeof(add->pages[0]), GFP_KERNEL); if (NULL == add->grants || NULL == add->map_ops || NULL == add->unmap_ops || NULL == add->kmap_ops || + NULL == add->kunmap_ops || NULL == add->pages) goto err; - if (alloc_xenballooned_pages(count, add->pages, false /* lowmem */)) + if (gnttab_alloc_pages(count, add->pages)) goto err; for (i = 0; i < count; i++) { add->map_ops[i].handle = -1; add->unmap_ops[i].handle = -1; add->kmap_ops[i].handle = -1; + add->kunmap_ops[i].handle = -1; } add->index = 0; @@ -216,9 +222,9 @@ static void gntdev_put_map(struct gntdev_priv *priv, struct grant_map *map) } if (populate_freeable_maps && priv) { - spin_lock(&priv->lock); + mutex_lock(&priv->lock); list_del(&map->next); - spin_unlock(&priv->lock); + mutex_unlock(&priv->lock); } if (map->pages && !use_ptemod) @@ -239,6 +245,14 @@ static int find_grant_ptes(pte_t *pte, pgtable_t token, BUG_ON(pgnr >= map->count); pte_maddr = arbitrary_virt_to_machine(pte).maddr; + /* + * Set the PTE as special to force get_user_pages_fast() fall + * back to the slow path. If this is not supported as part of + * the grant map, it will be done afterwards. + */ + if (xen_feature(XENFEAT_gnttab_map_avail_bits)) + flags |= (1 << _GNTMAP_guest_avail0); + gnttab_set_map_op(&map->map_ops[pgnr], pte_maddr, flags, map->grants[pgnr].ref, map->grants[pgnr].domid); @@ -247,6 +261,15 @@ static int find_grant_ptes(pte_t *pte, pgtable_t token, return 0; } +#ifdef CONFIG_X86 +static int set_grant_ptes_as_special(pte_t *pte, pgtable_t token, + unsigned long addr, void *data) +{ + set_pte_at(current->mm, addr, pte, pte_mkspecial(*pte)); + return 0; +} +#endif + static int map_grant_pages(struct grant_map *map) { int i, err = 0; @@ -280,6 +303,8 @@ static int map_grant_pages(struct grant_map *map) map->flags | GNTMAP_host_map, map->grants[i].ref, map->grants[i].domid); + gnttab_set_unmap_op(&map->kunmap_ops[i], address, + map->flags | GNTMAP_host_map, -1); } } @@ -290,20 +315,42 @@ static int map_grant_pages(struct grant_map *map) return err; for (i = 0; i < map->count; i++) { - if (map->map_ops[i].status) + if (map->map_ops[i].status) { err = -EINVAL; - else { - BUG_ON(map->map_ops[i].handle == -1); - map->unmap_ops[i].handle = map->map_ops[i].handle; - pr_debug("map handle=%d\n", map->map_ops[i].handle); + continue; } + + map->unmap_ops[i].handle = map->map_ops[i].handle; + if (use_ptemod) + map->kunmap_ops[i].handle = map->kmap_ops[i].handle; } return err; } +struct unmap_grant_pages_callback_data +{ + struct completion completion; + int result; +}; + +static void unmap_grant_callback(int result, + struct gntab_unmap_queue_data *data) +{ + struct unmap_grant_pages_callback_data* d = data->data; + + d->result = result; + complete(&d->completion); +} + static int __unmap_grant_pages(struct grant_map *map, int offset, int pages) { int i, err = 0; + struct gntab_unmap_queue_data unmap_data; + struct unmap_grant_pages_callback_data data; + + init_completion(&data.completion); + unmap_data.data = &data; + unmap_data.done= &unmap_grant_callback; if (map->notify.flags & UNMAP_NOTIFY_CLEAR_BYTE) { int pgno = (map->notify.addr >> PAGE_SHIFT); @@ -315,11 +362,16 @@ static int __unmap_grant_pages(struct grant_map *map, int offset, int pages) } } - err = gnttab_unmap_refs(map->unmap_ops + offset, - use_ptemod ? map->kmap_ops + offset : NULL, map->pages + offset, - pages); - if (err) - return err; + unmap_data.unmap_ops = map->unmap_ops + offset; + unmap_data.kunmap_ops = use_ptemod ? map->kunmap_ops + offset : NULL; + unmap_data.pages = map->pages + offset; + unmap_data.count = pages; + + gnttab_unmap_refs_async(&unmap_data); + + wait_for_completion(&data.completion); + if (data.result) + return data.result; for (i = 0; i < pages; i++) { if (map->unmap_ops[offset+i].status) @@ -387,17 +439,26 @@ static void gntdev_vma_close(struct vm_area_struct *vma) * not do any unmapping, since that has been done prior to * closing the vma, but it may still iterate the unmap_ops list. */ - spin_lock(&priv->lock); + mutex_lock(&priv->lock); map->vma = NULL; - spin_unlock(&priv->lock); + mutex_unlock(&priv->lock); } vma->vm_private_data = NULL; gntdev_put_map(priv, map); } +static struct page *gntdev_vma_find_special_page(struct vm_area_struct *vma, + unsigned long addr) +{ + struct grant_map *map = vma->vm_private_data; + + return map->pages[(addr - map->pages_vm_start) >> PAGE_SHIFT]; +} + static struct vm_operations_struct gntdev_vmops = { .open = gntdev_vma_open, .close = gntdev_vma_close, + .find_special_page = gntdev_vma_find_special_page, }; /* ------------------------------------------------------------------ */ @@ -433,14 +494,14 @@ static void mn_invl_range_start(struct mmu_notifier *mn, struct gntdev_priv *priv = container_of(mn, struct gntdev_priv, mn); struct grant_map *map; - spin_lock(&priv->lock); + mutex_lock(&priv->lock); list_for_each_entry(map, &priv->maps, next) { unmap_if_in_range(map, start, end); } list_for_each_entry(map, &priv->freeable_maps, next) { unmap_if_in_range(map, start, end); } - spin_unlock(&priv->lock); + mutex_unlock(&priv->lock); } static void mn_invl_page(struct mmu_notifier *mn, @@ -457,7 +518,7 @@ static void mn_release(struct mmu_notifier *mn, struct grant_map *map; int err; - spin_lock(&priv->lock); + mutex_lock(&priv->lock); list_for_each_entry(map, &priv->maps, next) { if (!map->vma) continue; @@ -476,7 +537,7 @@ static void mn_release(struct mmu_notifier *mn, err = unmap_grant_pages(map, /* offset */ 0, map->count); WARN_ON(err); } - spin_unlock(&priv->lock); + mutex_unlock(&priv->lock); } static struct mmu_notifier_ops gntdev_mmu_ops = { @@ -498,7 +559,7 @@ static int gntdev_open(struct inode *inode, struct file *flip) INIT_LIST_HEAD(&priv->maps); INIT_LIST_HEAD(&priv->freeable_maps); - spin_lock_init(&priv->lock); + mutex_init(&priv->lock); if (use_ptemod) { priv->mm = get_task_mm(current); @@ -572,10 +633,10 @@ static long gntdev_ioctl_map_grant_ref(struct gntdev_priv *priv, return -EFAULT; } - spin_lock(&priv->lock); + mutex_lock(&priv->lock); gntdev_add_map(priv, map); op.index = map->index << PAGE_SHIFT; - spin_unlock(&priv->lock); + mutex_unlock(&priv->lock); if (copy_to_user(u, &op, sizeof(op)) != 0) return -EFAULT; @@ -594,7 +655,7 @@ static long gntdev_ioctl_unmap_grant_ref(struct gntdev_priv *priv, return -EFAULT; pr_debug("priv %p, del %d+%d\n", priv, (int)op.index, (int)op.count); - spin_lock(&priv->lock); + mutex_lock(&priv->lock); map = gntdev_find_map_index(priv, op.index >> PAGE_SHIFT, op.count); if (map) { list_del(&map->next); @@ -602,7 +663,7 @@ static long gntdev_ioctl_unmap_grant_ref(struct gntdev_priv *priv, list_add_tail(&map->next, &priv->freeable_maps); err = 0; } - spin_unlock(&priv->lock); + mutex_unlock(&priv->lock); if (map) gntdev_put_map(priv, map); return err; @@ -670,7 +731,7 @@ static long gntdev_ioctl_notify(struct gntdev_priv *priv, void __user *u) out_flags = op.action; out_event = op.event_channel_port; - spin_lock(&priv->lock); + mutex_lock(&priv->lock); list_for_each_entry(map, &priv->maps, next) { uint64_t begin = map->index << PAGE_SHIFT; @@ -698,7 +759,7 @@ static long gntdev_ioctl_notify(struct gntdev_priv *priv, void __user *u) rc = 0; unlock_out: - spin_unlock(&priv->lock); + mutex_unlock(&priv->lock); /* Drop the reference to the event channel we did not save in the map */ if (out_flags & UNMAP_NOTIFY_SEND_EVENT) @@ -748,7 +809,7 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma) pr_debug("map %d+%d at %lx (pgoff %lx)\n", index, count, vma->vm_start, vma->vm_pgoff); - spin_lock(&priv->lock); + mutex_lock(&priv->lock); map = gntdev_find_map_index(priv, index, count); if (!map) goto unlock_out; @@ -783,7 +844,7 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma) map->flags |= GNTMAP_readonly; } - spin_unlock(&priv->lock); + mutex_unlock(&priv->lock); if (use_ptemod) { err = apply_to_page_range(vma->vm_mm, vma->vm_start, @@ -806,16 +867,34 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma) if (err) goto out_put_map; } + } else { +#ifdef CONFIG_X86 + /* + * If the PTEs were not made special by the grant map + * hypercall, do so here. + * + * This is racy since the mapping is already visible + * to userspace but userspace should be well-behaved + * enough to not touch it until the mmap() call + * returns. + */ + if (!xen_feature(XENFEAT_gnttab_map_avail_bits)) { + apply_to_page_range(vma->vm_mm, vma->vm_start, + vma->vm_end - vma->vm_start, + set_grant_ptes_as_special, NULL); + } +#endif + map->pages_vm_start = vma->vm_start; } return 0; unlock_out: - spin_unlock(&priv->lock); + mutex_unlock(&priv->lock); return err; out_unlock_put: - spin_unlock(&priv->lock); + mutex_unlock(&priv->lock); out_put_map: if (use_ptemod) map->vma = NULL; diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c index 7786291..17972fb 100644 --- a/drivers/xen/grant-table.c +++ b/drivers/xen/grant-table.c @@ -42,6 +42,7 @@ #include <linux/io.h> #include <linux/delay.h> #include <linux/hardirq.h> +#include <linux/workqueue.h> #include <xen/xen.h> #include <xen/interface/xen.h> @@ -50,6 +51,7 @@ #include <xen/interface/memory.h> #include <xen/hvc-console.h> #include <xen/swiotlb-xen.h> +#include <xen/balloon.h> #include <asm/xen/hypercall.h> #include <asm/xen/interface.h> @@ -671,6 +673,59 @@ void gnttab_free_auto_xlat_frames(void) } EXPORT_SYMBOL_GPL(gnttab_free_auto_xlat_frames); +/** + * gnttab_alloc_pages - alloc pages suitable for grant mapping into + * @nr_pages: number of pages to alloc + * @pages: returns the pages + */ +int gnttab_alloc_pages(int nr_pages, struct page **pages) +{ + int i; + int ret; + + ret = alloc_xenballooned_pages(nr_pages, pages, false); + if (ret < 0) + return ret; + + for (i = 0; i < nr_pages; i++) { +#if BITS_PER_LONG < 64 + struct xen_page_foreign *foreign; + + foreign = kzalloc(sizeof(*foreign), GFP_KERNEL); + if (!foreign) { + gnttab_free_pages(nr_pages, pages); + return -ENOMEM; + } + set_page_private(pages[i], (unsigned long)foreign); +#endif + SetPagePrivate(pages[i]); + } + + return 0; +} +EXPORT_SYMBOL(gnttab_alloc_pages); + +/** + * gnttab_free_pages - free pages allocated by gnttab_alloc_pages() + * @nr_pages; number of pages to free + * @pages: the pages + */ +void gnttab_free_pages(int nr_pages, struct page **pages) +{ + int i; + + for (i = 0; i < nr_pages; i++) { + if (PagePrivate(pages[i])) { +#if BITS_PER_LONG < 64 + kfree((void *)page_private(pages[i])); +#endif + ClearPagePrivate(pages[i]); + } + } + free_xenballooned_pages(nr_pages, pages); +} +EXPORT_SYMBOL(gnttab_free_pages); + /* Handling of paged out grant targets (GNTST_eagain) */ #define MAX_DELAY 256 static inline void @@ -727,30 +782,87 @@ int gnttab_map_refs(struct gnttab_map_grant_ref *map_ops, if (ret) return ret; - /* Retry eagain maps */ - for (i = 0; i < count; i++) + for (i = 0; i < count; i++) { + /* Retry eagain maps */ if (map_ops[i].status == GNTST_eagain) gnttab_retry_eagain_gop(GNTTABOP_map_grant_ref, map_ops + i, &map_ops[i].status, __func__); + if (map_ops[i].status == GNTST_okay) { + struct xen_page_foreign *foreign; + + SetPageForeign(pages[i]); + foreign = xen_page_foreign(pages[i]); + foreign->domid = map_ops[i].dom; + foreign->gref = map_ops[i].ref; + } + } + return set_foreign_p2m_mapping(map_ops, kmap_ops, pages, count); } EXPORT_SYMBOL_GPL(gnttab_map_refs); int gnttab_unmap_refs(struct gnttab_unmap_grant_ref *unmap_ops, - struct gnttab_map_grant_ref *kmap_ops, + struct gnttab_unmap_grant_ref *kunmap_ops, struct page **pages, unsigned int count) { + unsigned int i; int ret; ret = HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref, unmap_ops, count); if (ret) return ret; - return clear_foreign_p2m_mapping(unmap_ops, kmap_ops, pages, count); + for (i = 0; i < count; i++) + ClearPageForeign(pages[i]); + + return clear_foreign_p2m_mapping(unmap_ops, kunmap_ops, pages, count); } EXPORT_SYMBOL_GPL(gnttab_unmap_refs); +#define GNTTAB_UNMAP_REFS_DELAY 5 + +static void __gnttab_unmap_refs_async(struct gntab_unmap_queue_data* item); + +static void gnttab_unmap_work(struct work_struct *work) +{ + struct gntab_unmap_queue_data + *unmap_data = container_of(work, + struct gntab_unmap_queue_data, + gnttab_work.work); + if (unmap_data->age != UINT_MAX) + unmap_data->age++; + __gnttab_unmap_refs_async(unmap_data); +} + +static void __gnttab_unmap_refs_async(struct gntab_unmap_queue_data* item) +{ + int ret; + int pc; + + for (pc = 0; pc < item->count; pc++) { + if (page_count(item->pages[pc]) > 1) { + unsigned long delay = GNTTAB_UNMAP_REFS_DELAY * (item->age + 1); + schedule_delayed_work(&item->gnttab_work, + msecs_to_jiffies(delay)); + return; + } + } + + ret = gnttab_unmap_refs(item->unmap_ops, item->kunmap_ops, + item->pages, item->count); + item->done(ret, item); +} + +void gnttab_unmap_refs_async(struct gntab_unmap_queue_data* item) +{ + INIT_DELAYED_WORK(&item->gnttab_work, gnttab_unmap_work); + item->age = 0; + + __gnttab_unmap_refs_async(item); +} +EXPORT_SYMBOL_GPL(gnttab_unmap_refs_async); + static int gnttab_map_frames_v1(xen_pfn_t *frames, unsigned int nr_gframes) { int rc; diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c index f8bb36f..bf19407 100644 --- a/drivers/xen/manage.c +++ b/drivers/xen/manage.c @@ -105,10 +105,16 @@ static void do_suspend(void) err = freeze_processes(); if (err) { - pr_err("%s: freeze failed %d\n", __func__, err); + pr_err("%s: freeze processes failed %d\n", __func__, err); goto out; } + err = freeze_kernel_threads(); + if (err) { + pr_err("%s: freeze kernel threads failed %d\n", __func__, err); + goto out_thaw; + } + err = dpm_suspend_start(PMSG_FREEZE); if (err) { pr_err("%s: dpm_suspend_start %d\n", __func__, err); diff --git a/drivers/xen/tmem.c b/drivers/xen/tmem.c index 83b5c53..8a65423 100644 --- a/drivers/xen/tmem.c +++ b/drivers/xen/tmem.c @@ -374,7 +374,7 @@ static struct frontswap_ops tmem_frontswap_ops = { }; #endif -static int xen_tmem_init(void) +static int __init xen_tmem_init(void) { if (!xen_domain()) return 0; diff --git a/drivers/xen/xen-acpi-memhotplug.c b/drivers/xen/xen-acpi-memhotplug.c index 34e40b7..4fc886c 100644 --- a/drivers/xen/xen-acpi-memhotplug.c +++ b/drivers/xen/xen-acpi-memhotplug.c @@ -117,8 +117,8 @@ acpi_memory_get_resource(struct acpi_resource *resource, void *context) list_for_each_entry(info, &mem_device->res_list, list) { if ((info->caching == address64.info.mem.caching) && (info->write_protect == address64.info.mem.write_protect) && - (info->start_addr + info->length == address64.minimum)) { - info->length += address64.address_length; + (info->start_addr + info->length == address64.address.minimum)) { + info->length += address64.address.address_length; return AE_OK; } } @@ -130,8 +130,8 @@ acpi_memory_get_resource(struct acpi_resource *resource, void *context) INIT_LIST_HEAD(&new->list); new->caching = address64.info.mem.caching; new->write_protect = address64.info.mem.write_protect; - new->start_addr = address64.minimum; - new->length = address64.address_length; + new->start_addr = address64.address.minimum; + new->length = address64.address.address_length; list_add_tail(&new->list, &mem_device->res_list); return AE_OK; diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c index e999496e..ecd540a 100644 --- a/drivers/xen/xen-scsiback.c +++ b/drivers/xen/xen-scsiback.c @@ -227,7 +227,7 @@ static void put_free_pages(struct page **page, int num) return; if (i > scsiback_max_buffer_pages) { n = min(num, i - scsiback_max_buffer_pages); - free_xenballooned_pages(n, page + num - n); + gnttab_free_pages(n, page + num - n); n = num - n; } spin_lock_irqsave(&free_pages_lock, flags); @@ -244,7 +244,7 @@ static int get_free_page(struct page **page) spin_lock_irqsave(&free_pages_lock, flags); if (list_empty(&scsiback_free_pages)) { spin_unlock_irqrestore(&free_pages_lock, flags); - return alloc_xenballooned_pages(1, page, false); + return gnttab_alloc_pages(1, page); } page[0] = list_first_entry(&scsiback_free_pages, struct page, lru); list_del(&page[0]->lru); @@ -2106,7 +2106,7 @@ static void __exit scsiback_exit(void) while (free_pages_num) { if (get_free_page(&page)) BUG(); - free_xenballooned_pages(1, &page); + gnttab_free_pages(1, &page); } scsiback_deregister_configfs(); xenbus_unregister_driver(&scsiback_driver); diff --git a/drivers/xen/xenbus/xenbus_dev_frontend.c b/drivers/xen/xenbus/xenbus_dev_frontend.c index 85534ea..9433e46 100644 --- a/drivers/xen/xenbus/xenbus_dev_frontend.c +++ b/drivers/xen/xenbus/xenbus_dev_frontend.c @@ -326,10 +326,13 @@ static int xenbus_write_transaction(unsigned msg_type, } if (msg_type == XS_TRANSACTION_START) { - trans->handle.id = simple_strtoul(reply, NULL, 0); - - list_add(&trans->list, &u->transactions); - } else if (msg_type == XS_TRANSACTION_END) { + if (u->u.msg.type == XS_ERROR) + kfree(trans); + else { + trans->handle.id = simple_strtoul(reply, NULL, 0); + list_add(&trans->list, &u->transactions); + } + } else if (u->u.msg.type == XS_TRANSACTION_END) { list_for_each_entry(trans, &u->transactions, list) if (trans->handle.id == u->u.msg.tx_id) break; |
