diff options
Diffstat (limited to 'arch/powerpc/platforms')
70 files changed, 2423 insertions, 721 deletions
diff --git a/arch/powerpc/platforms/83xx/Makefile b/arch/powerpc/platforms/83xx/Makefile index 9d8b28ef..5c72367 100644 --- a/arch/powerpc/platforms/83xx/Makefile +++ b/arch/powerpc/platforms/83xx/Makefile @@ -1,4 +1,6 @@ # # Makefile for the PowerPC 83xx linux kernel. # -obj-$(CONFIG_MPC834x_SYS) += mpc834x_sys.o pci.o +obj-y := misc.o +obj-$(CONFIG_PCI) += pci.o +obj-$(CONFIG_MPC834x_SYS) += mpc834x_sys.o diff --git a/arch/powerpc/platforms/83xx/misc.c b/arch/powerpc/platforms/83xx/misc.c new file mode 100644 index 0000000..1455bce --- /dev/null +++ b/arch/powerpc/platforms/83xx/misc.c @@ -0,0 +1,55 @@ +/* + * misc setup functions for MPC83xx + * + * Maintainer: Kumar Gala <galak@kernel.crashing.org> + * + * 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, or (at your + * option) any later version. + */ + +#include <linux/config.h> +#include <linux/stddef.h> +#include <linux/kernel.h> + +#include <asm/io.h> +#include <asm/hw_irq.h> +#include <sysdev/fsl_soc.h> + +#include "mpc83xx.h" + +void mpc83xx_restart(char *cmd) +{ +#define RST_OFFSET 0x00000900 +#define RST_PROT_REG 0x00000018 +#define RST_CTRL_REG 0x0000001c + __be32 __iomem *reg; + + /* map reset register space */ + reg = ioremap(get_immrbase() + 0x900, 0xff); + + local_irq_disable(); + + /* enable software reset "RSTE" */ + out_be32(reg + (RST_PROT_REG >> 2), 0x52535445); + + /* set software hard reset */ + out_be32(reg + (RST_CTRL_REG >> 2), 0x2); + for (;;) ; +} + +long __init mpc83xx_time_init(void) +{ +#define SPCR_OFFSET 0x00000110 +#define SPCR_TBEN 0x00400000 + __be32 __iomem *spcr = ioremap(get_immrbase() + SPCR_OFFSET, 4); + __be32 tmp; + + tmp = in_be32(spcr); + out_be32(spcr, tmp | SPCR_TBEN); + + iounmap(spcr); + + return 0; +} diff --git a/arch/powerpc/platforms/83xx/mpc834x_sys.c b/arch/powerpc/platforms/83xx/mpc834x_sys.c index 2098dd0..7c18b4c 100644 --- a/arch/powerpc/platforms/83xx/mpc834x_sys.c +++ b/arch/powerpc/platforms/83xx/mpc834x_sys.c @@ -24,22 +24,15 @@ #include <linux/delay.h> #include <linux/seq_file.h> #include <linux/root_dev.h> -#include <linux/module.h> -#include <linux/fsl_devices.h> #include <asm/system.h> -#include <asm/pgtable.h> -#include <asm/page.h> #include <asm/atomic.h> #include <asm/time.h> #include <asm/io.h> #include <asm/machdep.h> #include <asm/ipic.h> #include <asm/bootinfo.h> -#include <asm/pci-bridge.h> -#include <asm/mpc83xx.h> #include <asm/irq.h> -#include <mm/mmu_decl.h> #include <asm/prom.h> #include <asm/udbg.h> #include <sysdev/fsl_soc.h> @@ -52,8 +45,6 @@ unsigned long isa_mem_base = 0; #endif #ifdef CONFIG_PCI -extern int mpc83xx_pci2_busno; - static int mpc83xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin) { @@ -78,26 +69,14 @@ mpc83xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin) const long min_idsel = 0x11, max_idsel = 0x20, irqs_per_slot = 4; return PCI_IRQ_TABLE_LOOKUP; } - -static int -mpc83xx_exclude_device(u_char bus, u_char devfn) -{ - if (bus == 0 && PCI_SLOT(devfn) == 0) - return PCIBIOS_DEVICE_NOT_FOUND; - if (mpc83xx_pci2_busno) - if (bus == (mpc83xx_pci2_busno) && PCI_SLOT(devfn) == 0) - return PCIBIOS_DEVICE_NOT_FOUND; - return PCIBIOS_SUCCESSFUL; -} -#endif /* CONFIG_PCI */ +#endif /* CONFIG_PCI */ /* ************************************************************************ * * Setup the architecture * */ -static void __init -mpc834x_sys_setup_arch(void) +static void __init mpc834x_sys_setup_arch(void) { struct device_node *np; @@ -106,14 +85,14 @@ mpc834x_sys_setup_arch(void) np = of_find_node_by_type(NULL, "cpu"); if (np != 0) { - unsigned int *fp = (int *) get_property(np, "clock-frequency", NULL); + unsigned int *fp = + (int *)get_property(np, "clock-frequency", NULL); if (fp != 0) loops_per_jiffy = *fp / HZ; else loops_per_jiffy = 50000000 / HZ; of_node_put(np); } - #ifdef CONFIG_PCI for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;) add_bridge(np); @@ -124,14 +103,13 @@ mpc834x_sys_setup_arch(void) #endif #ifdef CONFIG_ROOT_NFS - ROOT_DEV = Root_NFS; + ROOT_DEV = Root_NFS; #else - ROOT_DEV = Root_HDA1; + ROOT_DEV = Root_HDA1; #endif } -void __init -mpc834x_sys_init_IRQ(void) +void __init mpc834x_sys_init_IRQ(void) { u8 senses[8] = { 0, /* EXT 0 */ @@ -160,64 +138,27 @@ mpc834x_sys_init_IRQ(void) } #if defined(CONFIG_I2C_MPC) && defined(CONFIG_SENSORS_DS1374) -extern ulong ds1374_get_rtc_time(void); -extern int ds1374_set_rtc_time(ulong); +extern ulong ds1374_get_rtc_time(void); +extern int ds1374_set_rtc_time(ulong); -static int __init -mpc834x_rtc_hookup(void) +static int __init mpc834x_rtc_hookup(void) { - struct timespec tv; + struct timespec tv; ppc_md.get_rtc_time = ds1374_get_rtc_time; ppc_md.set_rtc_time = ds1374_set_rtc_time; tv.tv_nsec = 0; - tv.tv_sec = (ppc_md.get_rtc_time)(); + tv.tv_sec = (ppc_md.get_rtc_time) (); do_settimeofday(&tv); return 0; } + late_initcall(mpc834x_rtc_hookup); #endif -static void -mpc83xx_restart(char *cmd) -{ -#define RST_OFFSET 0x00000900 -#define RST_PROT_REG 0x00000018 -#define RST_CTRL_REG 0x0000001c - __be32 __iomem *reg; - - // map reset register space - reg = ioremap(get_immrbase() + 0x900, 0xff); - - local_irq_disable(); - - /* enable software reset "RSTE" */ - out_be32(reg + (RST_PROT_REG >> 2), 0x52535445); - - /* set software hard reset */ - out_be32(reg + (RST_CTRL_REG >> 2), 0x52535445); - for(;;); -} - -static long __init -mpc83xx_time_init(void) -{ -#define SPCR_OFFSET 0x00000110 -#define SPCR_TBEN 0x00400000 - __be32 __iomem *spcr = ioremap(get_immrbase() + SPCR_OFFSET, 4); - __be32 tmp; - - tmp = in_be32(spcr); - out_be32(spcr, tmp|SPCR_TBEN); - - iounmap(spcr); - - return 0; -} -void __init -platform_init(void) +void __init platform_init(void) { /* setup the PowerPC module struct */ ppc_md.setup_arch = mpc834x_sys_setup_arch; @@ -239,5 +180,3 @@ platform_init(void) return; } - - diff --git a/arch/powerpc/platforms/83xx/mpc834x_sys.h b/arch/powerpc/platforms/83xx/mpc834x_sys.h index e4ca39f..fedecb7 100644 --- a/arch/powerpc/platforms/83xx/mpc834x_sys.h +++ b/arch/powerpc/platforms/83xx/mpc834x_sys.h @@ -20,4 +20,4 @@ #define PIRQC MPC83xx_IRQ_EXT6 #define PIRQD MPC83xx_IRQ_EXT7 -#endif /* __MACH_MPC83XX_SYS_H__ */ +#endif /* __MACH_MPC83XX_SYS_H__ */ diff --git a/arch/powerpc/platforms/83xx/mpc83xx.h b/arch/powerpc/platforms/83xx/mpc83xx.h index ce9e66a..01cae10 100644 --- a/arch/powerpc/platforms/83xx/mpc83xx.h +++ b/arch/powerpc/platforms/83xx/mpc83xx.h @@ -10,5 +10,8 @@ */ extern int add_bridge(struct device_node *dev); +extern int mpc83xx_exclude_device(u_char bus, u_char devfn); +extern void mpc83xx_restart(char *cmd); +extern long mpc83xx_time_init(void); -#endif /* __MPC83XX_H__ */ +#endif /* __MPC83XX_H__ */ diff --git a/arch/powerpc/platforms/83xx/pci.c b/arch/powerpc/platforms/83xx/pci.c index 469cdac..16f7d3b 100644 --- a/arch/powerpc/platforms/83xx/pci.c +++ b/arch/powerpc/platforms/83xx/pci.c @@ -36,7 +36,16 @@ int mpc83xx_pci2_busno; -#ifdef CONFIG_PCI +int mpc83xx_exclude_device(u_char bus, u_char devfn) +{ + if (bus == 0 && PCI_SLOT(devfn) == 0) + return PCIBIOS_DEVICE_NOT_FOUND; + if (mpc83xx_pci2_busno) + if (bus == (mpc83xx_pci2_busno) && PCI_SLOT(devfn) == 0) + return PCIBIOS_DEVICE_NOT_FOUND; + return PCIBIOS_SUCCESSFUL; +} + int __init add_bridge(struct device_node *dev) { int len; @@ -52,7 +61,7 @@ int __init add_bridge(struct device_node *dev) has_address = (of_address_to_resource(dev, 0, &rsrc) == 0); /* Get bus range if any */ - bus_range = (int *) get_property(dev, "bus-range", &len); + bus_range = (int *)get_property(dev, "bus-range", &len); if (bus_range == NULL || len < 2 * sizeof(int)) { printk(KERN_WARNING "Can't get bus-range for %s, assume" " bus 0\n", dev->full_name); @@ -74,7 +83,7 @@ int __init add_bridge(struct device_node *dev) if ((rsrc.start & 0xfffff) == 0x8500) { setup_indirect_pci(hose, immr + 0x8300, immr + 0x8304); } - /* PCI 2*/ + /* PCI 2 */ if ((rsrc.start & 0xfffff) == 0x8600) { setup_indirect_pci(hose, immr + 0x8380, immr + 0x8384); primary = 0; @@ -84,10 +93,10 @@ int __init add_bridge(struct device_node *dev) printk(KERN_INFO "Found MPC83xx PCI host bridge at 0x%08lx. " "Firmware bus number: %d->%d\n", - rsrc.start, hose->first_busno, hose->last_busno); + rsrc.start, hose->first_busno, hose->last_busno); DBG(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n", - hose, hose->cfg_addr, hose->cfg_data); + hose, hose->cfg_addr, hose->cfg_data); /* Interpret the "ranges" property */ /* This also maps the I/O region and sets isa_io/mem_base */ @@ -95,5 +104,3 @@ int __init add_bridge(struct device_node *dev) return 0; } - -#endif diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig index c5bc282..06e3712 100644 --- a/arch/powerpc/platforms/85xx/Kconfig +++ b/arch/powerpc/platforms/85xx/Kconfig @@ -1,86 +1,31 @@ -config 85xx - bool - depends on E500 - default y - -config PPC_INDIRECT_PCI_BE - bool - depends on 85xx - default y - -menu "Freescale 85xx options" - depends on E500 +menu "Platform support" + depends on PPC_85xx choice prompt "Machine Type" - depends on 85xx default MPC8540_ADS config MPC8540_ADS bool "Freescale MPC8540 ADS" + select DEFAULT_UIMAGE help - This option enables support for the MPC 8540 ADS evaluation board. - -config MPC8548_CDS - bool "Freescale MPC8548 CDS" - help - This option enablese support for the MPC8548 CDS evaluation board. - -config MPC8555_CDS - bool "Freescale MPC8555 CDS" - help - This option enablese support for the MPC8555 CDS evaluation board. - -config MPC8560_ADS - bool "Freescale MPC8560 ADS" - help - This option enables support for the MPC 8560 ADS evaluation board. - -config SBC8560 - bool "WindRiver PowerQUICC III SBC8560" - help - This option enables support for the WindRiver PowerQUICC III - SBC8560 board. - -config STX_GP3 - bool "Silicon Turnkey Express GP3" - help - This option enables support for the Silicon Turnkey Express GP3 - board. + This option enables support for the MPC 8540 ADS board endchoice -# It's often necessary to know the specific 85xx processor type. -# Fortunately, it is implied (so far) from the board type, so we -# don't need to ask more redundant questions. config MPC8540 bool - depends on MPC8540_ADS - default y - -config MPC8548 - bool - depends on MPC8548_CDS - default y + select PPC_UDBG_16550 + select PPC_INDIRECT_PCI + default y if MPC8540_ADS -config MPC8555 - bool - depends on MPC8555_CDS - default y - -config MPC8560 +config PPC_INDIRECT_PCI_BE bool - depends on SBC8560 || MPC8560_ADS || STX_GP3 - default y - -config 85xx_PCI2 - bool "Supprt for 2nd PCI host controller" - depends on MPC8555_CDS + depends on PPC_85xx default y -config PPC_GEN550 +config MPIC bool - depends on MPC8540 || SBC8560 || MPC8555 default y endmenu diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile index 6407197..ffc4139 100644 --- a/arch/powerpc/platforms/85xx/Makefile +++ b/arch/powerpc/platforms/85xx/Makefile @@ -1 +1,5 @@ -# empty makefile so make clean works +# +# Makefile for the PowerPC 85xx linux kernel. +# +obj-$(CONFIG_PPC_85xx) += misc.o pci.o +obj-$(CONFIG_MPC8540_ADS) += mpc85xx_ads.o diff --git a/arch/powerpc/platforms/85xx/misc.c b/arch/powerpc/platforms/85xx/misc.c new file mode 100644 index 0000000..26c5e822 --- /dev/null +++ b/arch/powerpc/platforms/85xx/misc.c @@ -0,0 +1,31 @@ +/* + * MPC85xx generic code. + * + * Maintained by Kumar Gala (see MAINTAINERS for contact information) + * + * Copyright 2005 Freescale Semiconductor Inc. + * + * 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, or (at your + * option) any later version. + */ +#include <linux/irq.h> +#include <linux/module.h> +#include <asm/irq.h> + +extern void abort(void); + +void mpc85xx_restart(char *cmd) +{ + local_irq_disable(); + abort(); +} + +/* For now this is a pass through */ +phys_addr_t fixup_bigphys_addr(phys_addr_t addr, phys_addr_t size) +{ + return addr; +}; + +EXPORT_SYMBOL(fixup_bigphys_addr); diff --git a/arch/powerpc/platforms/85xx/mpc8540_ads.h b/arch/powerpc/platforms/85xx/mpc8540_ads.h new file mode 100644 index 0000000..f770cad --- /dev/null +++ b/arch/powerpc/platforms/85xx/mpc8540_ads.h @@ -0,0 +1,36 @@ +/* + * arch/ppc/platforms/85xx/mpc8540_ads.h + * + * MPC8540ADS board definitions + * + * Maintainer: Kumar Gala <kumar.gala@freescale.com> + * + * Copyright 2004 Freescale Semiconductor Inc. + * + * 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, or (at your + * option) any later version. + * + */ + +#ifndef __MACH_MPC8540ADS_H__ +#define __MACH_MPC8540ADS_H__ + +#include <linux/config.h> +#include <linux/initrd.h> + +#define BOARD_CCSRBAR ((uint)0xe0000000) +#define BCSR_ADDR ((uint)0xf8000000) +#define BCSR_SIZE ((uint)(32 * 1024)) + +/* PCI interrupt controller */ +#define PIRQA MPC85xx_IRQ_EXT1 +#define PIRQB MPC85xx_IRQ_EXT2 +#define PIRQC MPC85xx_IRQ_EXT3 +#define PIRQD MPC85xx_IRQ_EXT4 + +/* Offset of CPM register space */ +#define CPM_MAP_ADDR (CCSRBAR + MPC85xx_CPM_OFFSET) + +#endif /* __MACH_MPC8540ADS_H__ */ diff --git a/arch/powerpc/platforms/85xx/mpc85xx.h b/arch/powerpc/platforms/85xx/mpc85xx.h new file mode 100644 index 0000000..b44db62 --- /dev/null +++ b/arch/powerpc/platforms/85xx/mpc85xx.h @@ -0,0 +1,18 @@ +/* + * arch/ppc/platforms/85xx/mpc85xx.h + * + * MPC85xx soc definitions/function decls + * + * Maintainer: Kumar Gala <kumar.gala@freescale.com> + * + * Copyright 2005 Freescale Semiconductor Inc. + * + * 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, or (at your + * option) any later version. + * + */ + +extern void mpc85xx_restart(char *); +extern int add_bridge(struct device_node *dev); diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ads.c b/arch/powerpc/platforms/85xx/mpc85xx_ads.c new file mode 100644 index 0000000..b7821db --- /dev/null +++ b/arch/powerpc/platforms/85xx/mpc85xx_ads.c @@ -0,0 +1,244 @@ +/* + * MPC85xx setup and early boot code plus other random bits. + * + * Maintained by Kumar Gala (see MAINTAINERS for contact information) + * + * Copyright 2005 Freescale Semiconductor Inc. + * + * 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, or (at your + * option) any later version. + */ + +#include <linux/config.h> +#include <linux/stddef.h> +#include <linux/kernel.h> +#include <linux/pci.h> +#include <linux/kdev_t.h> +#include <linux/delay.h> +#include <linux/seq_file.h> +#include <linux/root_dev.h> + +#include <asm/system.h> +#include <asm/time.h> +#include <asm/machdep.h> +#include <asm/pci-bridge.h> +#include <asm/mpc85xx.h> +#include <asm/prom.h> +#include <asm/mpic.h> +#include <mm/mmu_decl.h> +#include <asm/udbg.h> + +#include <sysdev/fsl_soc.h> +#include "mpc85xx.h" + +#ifndef CONFIG_PCI +unsigned long isa_io_base = 0; +unsigned long isa_mem_base = 0; +#endif + +/* + * Internal interrupts are all Level Sensitive, and Positive Polarity + * + * Note: Likely, this table and the following function should be + * obtained and derived from the OF Device Tree. + */ +static u_char mpc85xx_ads_openpic_initsenses[] __initdata = { + MPC85XX_INTERNAL_IRQ_SENSES, + 0x0, /* External 0: */ +#if defined(CONFIG_PCI) + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext 1: PCI slot 0 */ + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext 2: PCI slot 1 */ + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext 3: PCI slot 2 */ + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext 4: PCI slot 3 */ +#else + 0x0, /* External 1: */ + 0x0, /* External 2: */ + 0x0, /* External 3: */ + 0x0, /* External 4: */ +#endif + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 5: PHY */ + 0x0, /* External 6: */ + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 7: PHY */ + 0x0, /* External 8: */ + 0x0, /* External 9: */ + 0x0, /* External 10: */ + 0x0, /* External 11: */ +}; + +#ifdef CONFIG_PCI +/* + * interrupt routing + */ + +int +mpc85xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin) +{ + static char pci_irq_table[][4] = + /* + * This is little evil, but works around the fact + * that revA boards have IDSEL starting at 18 + * and others boards (older) start at 12 + * + * PCI IDSEL/INTPIN->INTLINE + * A B C D + */ + { + {PIRQA, PIRQB, PIRQC, PIRQD}, /* IDSEL 2 */ + {PIRQD, PIRQA, PIRQB, PIRQC}, + {PIRQC, PIRQD, PIRQA, PIRQB}, + {PIRQB, PIRQC, PIRQD, PIRQA}, /* IDSEL 5 */ + {0, 0, 0, 0}, /* -- */ + {0, 0, 0, 0}, /* -- */ + {0, 0, 0, 0}, /* -- */ + {0, 0, 0, 0}, /* -- */ + {0, 0, 0, 0}, /* -- */ + {0, 0, 0, 0}, /* -- */ + {PIRQA, PIRQB, PIRQC, PIRQD}, /* IDSEL 12 */ + {PIRQD, PIRQA, PIRQB, PIRQC}, + {PIRQC, PIRQD, PIRQA, PIRQB}, + {PIRQB, PIRQC, PIRQD, PIRQA}, /* IDSEL 15 */ + {0, 0, 0, 0}, /* -- */ + {0, 0, 0, 0}, /* -- */ + {PIRQA, PIRQB, PIRQC, PIRQD}, /* IDSEL 18 */ + {PIRQD, PIRQA, PIRQB, PIRQC}, + {PIRQC, PIRQD, PIRQA, PIRQB}, + {PIRQB, PIRQC, PIRQD, PIRQA}, /* IDSEL 21 */ + }; + + const long min_idsel = 2, max_idsel = 21, irqs_per_slot = 4; + return PCI_IRQ_TABLE_LOOKUP; +} + +int +mpc85xx_exclude_device(u_char bus, u_char devfn) +{ + if (bus == 0 && PCI_SLOT(devfn) == 0) + return PCIBIOS_DEVICE_NOT_FOUND; + else + return PCIBIOS_SUCCESSFUL; +} + +#endif /* CONFIG_PCI */ + + +void __init mpc85xx_ads_pic_init(void) +{ + struct mpic *mpic1; + phys_addr_t OpenPIC_PAddr; + + /* Determine the Physical Address of the OpenPIC regs */ + OpenPIC_PAddr = get_immrbase() + MPC85xx_OPENPIC_OFFSET; + + mpic1 = mpic_alloc(OpenPIC_PAddr, + MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, + 4, MPC85xx_OPENPIC_IRQ_OFFSET, 0, 250, + mpc85xx_ads_openpic_initsenses, + sizeof(mpc85xx_ads_openpic_initsenses), + " OpenPIC "); + BUG_ON(mpic1 == NULL); + mpic_assign_isu(mpic1, 0, OpenPIC_PAddr + 0x10200); + mpic_assign_isu(mpic1, 1, OpenPIC_PAddr + 0x10280); + mpic_assign_isu(mpic1, 2, OpenPIC_PAddr + 0x10300); + mpic_assign_isu(mpic1, 3, OpenPIC_PAddr + 0x10380); + mpic_assign_isu(mpic1, 4, OpenPIC_PAddr + 0x10400); + mpic_assign_isu(mpic1, 5, OpenPIC_PAddr + 0x10480); + mpic_assign_isu(mpic1, 6, OpenPIC_PAddr + 0x10500); + mpic_assign_isu(mpic1, 7, OpenPIC_PAddr + 0x10580); + + /* dummy mappings to get to 48 */ + mpic_assign_isu(mpic1, 8, OpenPIC_PAddr + 0x10600); + mpic_assign_isu(mpic1, 9, OpenPIC_PAddr + 0x10680); + mpic_assign_isu(mpic1, 10, OpenPIC_PAddr + 0x10700); + mpic_assign_isu(mpic1, 11, OpenPIC_PAddr + 0x10780); + + /* External ints */ + mpic_assign_isu(mpic1, 12, OpenPIC_PAddr + 0x10000); + mpic_assign_isu(mpic1, 13, OpenPIC_PAddr + 0x10080); + mpic_assign_isu(mpic1, 14, OpenPIC_PAddr + 0x10100); + mpic_init(mpic1); +} + +/* + * Setup the architecture + */ +static void __init mpc85xx_ads_setup_arch(void) +{ + struct device_node *cpu; + struct device_node *np; + + if (ppc_md.progress) + ppc_md.progress("mpc85xx_ads_setup_arch()", 0); + + cpu = of_find_node_by_type(NULL, "cpu"); + if (cpu != 0) { + unsigned int *fp; + + fp = (int *)get_property(cpu, "clock-frequency", NULL); + if (fp != 0) + loops_per_jiffy = *fp / HZ; + else + loops_per_jiffy = 50000000 / HZ; + of_node_put(cpu); + } + +#ifdef CONFIG_PCI + for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;) + add_bridge(np); + + ppc_md.pci_swizzle = common_swizzle; + ppc_md.pci_map_irq = mpc85xx_map_irq; + ppc_md.pci_exclude_device = mpc85xx_exclude_device; +#endif + +#ifdef CONFIG_ROOT_NFS + ROOT_DEV = Root_NFS; +#else + ROOT_DEV = Root_HDA1; +#endif +} + +void mpc85xx_ads_show_cpuinfo(struct seq_file *m) +{ + uint pvid, svid, phid1; + uint memsize = total_memory; + + pvid = mfspr(SPRN_PVR); + svid = mfspr(SPRN_SVR); + + seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n"); + seq_printf(m, "Machine\t\t: mpc85xx\n"); + seq_printf(m, "PVR\t\t: 0x%x\n", pvid); + seq_printf(m, "SVR\t\t: 0x%x\n", svid); + + /* Display cpu Pll setting */ + phid1 = mfspr(SPRN_HID1); + seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f)); + + /* Display the amount of memory */ + seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024)); +} + +void __init platform_init(void) +{ + ppc_md.setup_arch = mpc85xx_ads_setup_arch; + ppc_md.show_cpuinfo = mpc85xx_ads_show_cpuinfo; + + ppc_md.init_IRQ = mpc85xx_ads_pic_init; + ppc_md.get_irq = mpic_get_irq; + + ppc_md.restart = mpc85xx_restart; + ppc_md.power_off = NULL; + ppc_md.halt = NULL; + + ppc_md.time_init = NULL; + ppc_md.set_rtc_time = NULL; + ppc_md.get_rtc_time = NULL; + ppc_md.calibrate_decr = generic_calibrate_decr; + + ppc_md.progress = udbg_progress; + + if (ppc_md.progress) + ppc_md.progress("mpc85xx_ads platform_init(): exit", 0); +} diff --git a/arch/powerpc/platforms/85xx/pci.c b/arch/powerpc/platforms/85xx/pci.c new file mode 100644 index 0000000..bad2901 --- /dev/null +++ b/arch/powerpc/platforms/85xx/pci.c @@ -0,0 +1,96 @@ +/* + * FSL SoC setup code + * + * Maintained by Kumar Gala (see MAINTAINERS for contact information) + * + * 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, or (at your + * option) any later version. + */ + +#include <linux/config.h> +#include <linux/stddef.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/pci.h> +#include <linux/delay.h> +#include <linux/irq.h> +#include <linux/module.h> + +#include <asm/system.h> +#include <asm/atomic.h> +#include <asm/io.h> +#include <asm/pci-bridge.h> +#include <asm/prom.h> +#include <sysdev/fsl_soc.h> + +#undef DEBUG + +#ifdef DEBUG +#define DBG(x...) printk(x) +#else +#define DBG(x...) +#endif + +int mpc85xx_pci2_busno = 0; + +#ifdef CONFIG_PCI +int __init add_bridge(struct device_node *dev) +{ + int len; + struct pci_controller *hose; + struct resource rsrc; + int *bus_range; + int primary = 1, has_address = 0; + phys_addr_t immr = get_immrbase(); + + DBG("Adding PCI host bridge %s\n", dev->full_name); + + /* Fetch host bridge registers address */ + has_address = (of_address_to_resource(dev, 0, &rsrc) == 0); + + /* Get bus range if any */ + bus_range = (int *) get_property(dev, "bus-range", &len); + if (bus_range == NULL || len < 2 * sizeof(int)) { + printk(KERN_WARNING "Can't get bus-range for %s, assume" + " bus 0\n", dev->full_name); + } + + hose = pcibios_alloc_controller(); + if (!hose) + return -ENOMEM; + hose->arch_data = dev; + hose->set_cfg_type = 1; + + hose->first_busno = bus_range ? bus_range[0] : 0; + hose->last_busno = bus_range ? bus_range[1] : 0xff; + + /* PCI 1 */ + if ((rsrc.start & 0xfffff) == 0x8000) { + setup_indirect_pci(hose, immr + 0x8000, immr + 0x8004); + } + /* PCI 2 */ + if ((rsrc.start & 0xfffff) == 0x9000) { + setup_indirect_pci(hose, immr + 0x9000, immr + 0x9004); + primary = 0; + hose->bus_offset = hose->first_busno; + mpc85xx_pci2_busno = hose->first_busno; + } + + printk(KERN_INFO "Found MPC85xx PCI host bridge at 0x%08lx. " + "Firmware bus number: %d->%d\n", + rsrc.start, hose->first_busno, hose->last_busno); + + DBG(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n", + hose, hose->cfg_addr, hose->cfg_data); + + /* Interpret the "ranges" property */ + /* This also maps the I/O region and sets isa_io/mem_base */ + pci_process_bridge_OF_ranges(hose, dev, primary); + + return 0; +} + +#endif diff --git a/arch/powerpc/platforms/Makefile b/arch/powerpc/platforms/Makefile index 04073fd..c4f6b0d 100644 --- a/arch/powerpc/platforms/Makefile +++ b/arch/powerpc/platforms/Makefile @@ -8,7 +8,7 @@ endif obj-$(CONFIG_PPC_CHRP) += chrp/ obj-$(CONFIG_4xx) += 4xx/ obj-$(CONFIG_PPC_83xx) += 83xx/ -obj-$(CONFIG_85xx) += 85xx/ +obj-$(CONFIG_PPC_85xx) += 85xx/ obj-$(CONFIG_PPC_PSERIES) += pseries/ obj-$(CONFIG_PPC_ISERIES) += iseries/ obj-$(CONFIG_PPC_MAPLE) += maple/ diff --git a/arch/powerpc/platforms/cell/Kconfig b/arch/powerpc/platforms/cell/Kconfig index 3157071..c2a3db8 100644 --- a/arch/powerpc/platforms/cell/Kconfig +++ b/arch/powerpc/platforms/cell/Kconfig @@ -10,4 +10,9 @@ config SPU_FS Units on machines implementing the Broadband Processor Architecture. +config SPUFS_MMAP + bool + depends on SPU_FS && SPARSEMEM && !PPC_64K_PAGES + default y + endmenu diff --git a/arch/powerpc/platforms/cell/Makefile b/arch/powerpc/platforms/cell/Makefile index 3b998a3..e570bad 100644 --- a/arch/powerpc/platforms/cell/Makefile +++ b/arch/powerpc/platforms/cell/Makefile @@ -6,5 +6,11 @@ obj-$(CONFIG_SPU_FS) += spu-base.o spufs/ spu-base-y += spu_base.o spu_priv1.o -builtin-spufs-$(CONFIG_SPU_FS) += spu_syscalls.o -obj-y += $(builtin-spufs-m) +# needed only when building loadable spufs.ko +spufs-modular-$(CONFIG_SPU_FS) += spu_syscalls.o +obj-y += $(spufs-modular-m) + +# always needed in kernel +spufs-builtin-$(CONFIG_SPU_FS) += spu_callbacks.o +obj-y += $(spufs-builtin-y) $(spufs-builtin-m) + diff --git a/arch/powerpc/platforms/cell/interrupt.c b/arch/powerpc/platforms/cell/interrupt.c index 63aa52a..978be1c 100644 --- a/arch/powerpc/platforms/cell/interrupt.c +++ b/arch/powerpc/platforms/cell/interrupt.c @@ -63,7 +63,24 @@ static DEFINE_PER_CPU(struct iic, iic); void iic_local_enable(void) { - out_be64(&__get_cpu_var(iic).regs->prio, 0xff); + struct iic *iic = &__get_cpu_var(iic); + u64 tmp; + + /* + * There seems to be a bug that is present in DD2.x CPUs + * and still only partially fixed in DD3.1. + * This bug causes a value written to the priority register + * not to make it there, resulting in a system hang unless we + * write it again. + * Masking with 0xf0 is done because the Cell BE does not + * implement the lower four bits of the interrupt priority, + * they always read back as zeroes, although future CPUs + * might implement different bits. + */ + do { + out_be64(&iic->regs->prio, 0xff); + tmp = in_be64(&iic->regs->prio); + } while ((tmp & 0xf0) != 0xf0); } void iic_local_disable(void) @@ -123,7 +140,7 @@ static int iic_external_get_irq(struct iic_pending_bits pending) pending.class != 2) break; irq = IIC_EXT_OFFSET - + spider_get_irq(pending.prio + node * IIC_NODE_STRIDE) + + spider_get_irq(node) + node * IIC_NODE_STRIDE; break; case 0x01 ... 0x04: @@ -174,38 +191,98 @@ int iic_get_irq(struct pt_regs *regs) return irq; } -static int setup_iic(int cpu, struct iic *iic) +/* hardcoded part to be compatible with older firmware */ + +static int setup_iic_hardcoded(void) { struct device_node *np; - int nodeid = cpu / 2; + int nodeid, cpu; unsigned long regs; + struct iic *iic; - for (np = of_find_node_by_type(NULL, "cpu"); - np; - np = of_find_node_by_type(np, "cpu")) { - if (nodeid == *(int *)get_property(np, "node-id", NULL)) - break; + for_each_cpu(cpu) { + iic = &per_cpu(iic, cpu); + nodeid = cpu/2; + + for (np = of_find_node_by_type(NULL, "cpu"); + np; + np = of_find_node_by_type(np, "cpu")) { + if (nodeid == *(int *)get_property(np, "node-id", NULL)) + break; + } + + if (!np) { + printk(KERN_WARNING "IIC: CPU %d not found\n", cpu); + iic->regs = NULL; + iic->target_id = 0xff; + return -ENODEV; + } + + regs = *(long *)get_property(np, "iic", NULL); + + /* hack until we have decided on the devtree info */ + regs += 0x400; + if (cpu & 1) + regs += 0x20; + + printk(KERN_INFO "IIC for CPU %d at %lx\n", cpu, regs); + iic->regs = ioremap(regs, sizeof(struct iic_regs)); + iic->target_id = (nodeid << 4) + ((cpu & 1) ? 0xf : 0xe); } - if (!np) { - printk(KERN_WARNING "IIC: CPU %d not found\n", cpu); - iic->regs = NULL; - iic->target_id = 0xff; - return -ENODEV; - } + return 0; +} - regs = *(long *)get_property(np, "iic", NULL); +static int setup_iic(void) +{ + struct device_node *dn; + unsigned long *regs; + char *compatible; + unsigned *np, found = 0; + struct iic *iic = NULL; + + for (dn = NULL; (dn = of_find_node_by_name(dn, "interrupt-controller"));) { + compatible = (char *)get_property(dn, "compatible", NULL); + + if (!compatible) { + printk(KERN_WARNING "no compatible property found !\n"); + continue; + } - /* hack until we have decided on the devtree info */ - regs += 0x400; - if (cpu & 1) - regs += 0x20; + if (strstr(compatible, "IBM,CBEA-Internal-Interrupt-Controller")) + regs = (unsigned long *)get_property(dn,"reg", NULL); + else + continue; - printk(KERN_DEBUG "IIC for CPU %d at %lx\n", cpu, regs); - iic->regs = __ioremap(regs, sizeof(struct iic_regs), - _PAGE_NO_CACHE); - iic->target_id = (nodeid << 4) + ((cpu & 1) ? 0xf : 0xe); - return 0; + if (!regs) + printk(KERN_WARNING "IIC: no reg property\n"); + + np = (unsigned int *)get_property(dn, "ibm,interrupt-server-ranges", NULL); + + if (!np) { + printk(KERN_WARNING "IIC: CPU association not found\n"); + iic->regs = NULL; + iic->target_id = 0xff; + return -ENODEV; + } + + iic = &per_cpu(iic, np[0]); + iic->regs = ioremap(regs[0], sizeof(struct iic_regs)); + iic->target_id = ((np[0] & 2) << 3) + ((np[0] & 1) ? 0xf : 0xe); + printk("IIC for CPU %d at %lx mapped to %p\n", np[0], regs[0], iic->regs); + + iic = &per_cpu(iic, np[1]); + iic->regs = ioremap(regs[2], sizeof(struct iic_regs)); + iic->target_id = ((np[1] & 2) << 3) + ((np[1] & 1) ? 0xf : 0xe); + printk("IIC for CPU %d at %lx mapped to %p\n", np[1], regs[2], iic->regs); + + found++; + } + + if (found) + return 0; + else + return -ENODEV; } #ifdef CONFIG_SMP @@ -283,10 +360,12 @@ void iic_init_IRQ(void) int cpu, irq_offset; struct iic *iic; + if (setup_iic() < 0) + setup_iic_hardcoded(); + irq_offset = 0; - for_each_cpu(cpu) { + for_each_possible_cpu(cpu) { iic = &per_cpu(iic, cpu); - setup_iic(cpu, iic); if (iic->regs) out_be64(&iic->regs->prio, 0xff); } diff --git a/arch/powerpc/platforms/cell/interrupt.h b/arch/powerpc/platforms/cell/interrupt.h index a14bd38..799f77d 100644 --- a/arch/powerpc/platforms/cell/interrupt.h +++ b/arch/powerpc/platforms/cell/interrupt.h @@ -57,7 +57,7 @@ extern void iic_local_disable(void); extern u8 iic_get_target_id(int cpu); extern void spider_init_IRQ(void); -extern int spider_get_irq(unsigned long int_pending); +extern int spider_get_irq(int node); #endif #endif /* ASM_CELL_PIC_H */ diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c index 46e7cb9..a49ceb7 100644 --- a/arch/powerpc/platforms/cell/iommu.c +++ b/arch/powerpc/platforms/cell/iommu.c @@ -289,7 +289,7 @@ static void cell_do_map_iommu(struct cell_iommu *iommu, ioc_base = iommu->mapped_base; ioc_mmio_base = iommu->mapped_mmio_base; - for (real_address = 0, io_address = 0; + for (real_address = 0, io_address = map_start; io_address <= map_start + map_size; real_address += io_page_size, io_address += io_page_size) { ioste = get_iost_entry(fake_iopt, io_address, io_page_size); @@ -302,7 +302,7 @@ static void cell_do_map_iommu(struct cell_iommu *iommu, set_iopt_cache(ioc_mmio_base, get_ioc_hash_1way(ioste, io_address), get_ioc_tag(ioste, io_address), - get_iopt_entry(real_address-map_start, ioid, IOPT_PROT_RW)); + get_iopt_entry(real_address, ioid, IOPT_PROT_RW)); } } @@ -344,8 +344,8 @@ static int cell_map_iommu_hardcoded(int num_nodes) /* node 0 */ iommu = &cell_iommus[0]; - iommu->mapped_base = __ioremap(0x20000511000, 0x1000, _PAGE_NO_CACHE); - iommu->mapped_mmio_base = __ioremap(0x20000510000, 0x1000, _PAGE_NO_CACHE); + iommu->mapped_base = ioremap(0x20000511000, 0x1000); + iommu->mapped_mmio_base = ioremap(0x20000510000, 0x1000); enable_mapping(iommu->mapped_base, iommu->mapped_mmio_base); @@ -357,8 +357,8 @@ static int cell_map_iommu_hardcoded(int num_nodes) /* node 1 */ iommu = &cell_iommus[1]; - iommu->mapped_base = __ioremap(0x30000511000, 0x1000, _PAGE_NO_CACHE); - iommu->mapped_mmio_base = __ioremap(0x30000510000, 0x1000, _PAGE_NO_CACHE); + iommu->mapped_base = ioremap(0x30000511000, 0x1000); + iommu->mapped_mmio_base = ioremap(0x30000510000, 0x1000); enable_mapping(iommu->mapped_base, iommu->mapped_mmio_base); @@ -407,8 +407,8 @@ static int cell_map_iommu(void) iommu->base = *base; iommu->mmio_base = *mmio_base; - iommu->mapped_base = __ioremap(*base, 0x1000, _PAGE_NO_CACHE); - iommu->mapped_mmio_base = __ioremap(*mmio_base, 0x1000, _PAGE_NO_CACHE); + iommu->mapped_base = ioremap(*base, 0x1000); + iommu->mapped_mmio_base = ioremap(*mmio_base, 0x1000); enable_mapping(iommu->mapped_base, iommu->mapped_mmio_base); diff --git a/arch/powerpc/platforms/cell/pervasive.c b/arch/powerpc/platforms/cell/pervasive.c index e0e051c..7eed8c6 100644 --- a/arch/powerpc/platforms/cell/pervasive.c +++ b/arch/powerpc/platforms/cell/pervasive.c @@ -203,7 +203,7 @@ found: pr_debug("pervasive area for CPU %d at %lx, size %x\n", cpu, real_address, size); - p->regs = __ioremap(real_address, size, _PAGE_NO_CACHE); + p->regs = ioremap(real_address, size); p->thread = thread; return 0; } @@ -217,7 +217,7 @@ void __init cell_pervasive_init(void) if (!cpu_has_feature(CPU_FTR_PAUSE_ZERO)) return; - for_each_cpu(cpu) { + for_each_possible_cpu(cpu) { p = &cbe_pervasive[cpu]; ret = cbe_find_pmd_mmio(cpu, p); if (ret) diff --git a/arch/powerpc/platforms/cell/setup.c b/arch/powerpc/platforms/cell/setup.c index b33a444..dac5d03 100644 --- a/arch/powerpc/platforms/cell/setup.c +++ b/arch/powerpc/platforms/cell/setup.c @@ -115,7 +115,7 @@ static void __init cell_spuprop_present(struct device_node *spe, for (pfn = start_pfn; pfn < end_pfn; pfn++) { struct page *page = pfn_to_page(pfn); set_page_links(page, ZONE_DMA, node_id, pfn); - set_page_count(page, 1); + init_page_count(page); reset_page_mapcount(page); SetPageReserved(page); INIT_LIST_HEAD(&page->lru); @@ -195,9 +195,13 @@ static void __init cell_init_early(void) } -static int __init cell_probe(int platform) +static int __init cell_probe(void) { - if (platform != PLATFORM_CELL) + /* XXX This is temporary, the Cell maintainer will come up with + * more appropriate detection logic + */ + unsigned long root = of_get_flat_dt_root(); + if (!of_flat_dt_is_compatible(root, "IBM,CPBW-1.0")) return 0; return 1; @@ -212,7 +216,8 @@ static int cell_check_legacy_ioport(unsigned int baseport) return -ENODEV; } -struct machdep_calls __initdata cell_md = { +define_machine(cell) { + .name = "Cell", .probe = cell_probe, .setup_arch = cell_setup_arch, .init_early = cell_init_early, diff --git a/arch/powerpc/platforms/cell/spider-pic.c b/arch/powerpc/platforms/cell/spider-pic.c index e741321..55cbdd7 100644 --- a/arch/powerpc/platforms/cell/spider-pic.c +++ b/arch/powerpc/platforms/cell/spider-pic.c @@ -84,10 +84,11 @@ static void __iomem *spider_get_irq_config(int irq) static void spider_enable_irq(unsigned int irq) { + int nodeid = (irq / IIC_NODE_STRIDE) * 0x10; void __iomem *cfg = spider_get_irq_config(irq); irq = spider_get_nr(irq); - out_be32(cfg, in_be32(cfg) | 0x3107000eu); + out_be32(cfg, (in_be32(cfg) & ~0xf0)| 0x3107000eu | nodeid); out_be32(cfg + 4, in_be32(cfg + 4) | 0x00020000u | irq); } @@ -131,61 +132,108 @@ static struct hw_interrupt_type spider_pic = { .end = spider_end_irq, }; - -int spider_get_irq(unsigned long int_pending) +int spider_get_irq(int node) { - void __iomem *regs = spider_get_pic(int_pending); unsigned long cs; - int irq; - - cs = in_be32(regs + TIR_CS); + void __iomem *regs = spider_pics[node]; - irq = cs >> 24; - if (irq != 63) - return irq; + cs = in_be32(regs + TIR_CS) >> 24; - return -1; + if (cs == 63) + return -1; + else + return cs; } - -void spider_init_IRQ(void) + +/* hardcoded part to be compatible with older firmware */ + +void spider_init_IRQ_hardcoded(void) { int node; - struct device_node *dn; - unsigned int *property; long spiderpic; + long pics[] = { 0x24000008000, 0x34000008000 }; int n; -/* FIXME: detect multiple PICs as soon as the device tree has them */ - for (node = 0; node < 1; node++) { - dn = of_find_node_by_path("/"); - n = prom_n_addr_cells(dn); - property = (unsigned int *) get_property(dn, - "platform-spider-pic", NULL); + pr_debug("%s(%d): Using hardcoded defaults\n", __FUNCTION__, __LINE__); - if (!property) - continue; - for (spiderpic = 0; n > 0; --n) - spiderpic = (spiderpic << 32) + *property++; + for (node = 0; node < num_present_cpus()/2; node++) { + spiderpic = pics[node]; printk(KERN_DEBUG "SPIDER addr: %lx\n", spiderpic); - spider_pics[node] = __ioremap(spiderpic, 0x800, _PAGE_NO_CACHE); + spider_pics[node] = ioremap(spiderpic, 0x800); for (n = 0; n < IIC_NUM_EXT; n++) { int irq = n + IIC_EXT_OFFSET + node * IIC_NODE_STRIDE; get_irq_desc(irq)->handler = &spider_pic; + } /* do not mask any interrupts because of level */ out_be32(spider_pics[node] + TIR_MSK, 0x0); - + /* disable edge detection clear */ /* out_be32(spider_pics[node] + TIR_EDC, 0x0); */ - + /* enable interrupt packets to be output */ out_be32(spider_pics[node] + TIR_PIEN, in_be32(spider_pics[node] + TIR_PIEN) | 0x1); - + /* Enable the interrupt detection enable bit. Do this last! */ out_be32(spider_pics[node] + TIR_DEN, - in_be32(spider_pics[node] +TIR_DEN) | 0x1); + in_be32(spider_pics[node] + TIR_DEN) | 0x1); + } +} + +void spider_init_IRQ(void) +{ + long spider_reg; + struct device_node *dn; + char *compatible; + int n, node = 0; + + for (dn = NULL; (dn = of_find_node_by_name(dn, "interrupt-controller"));) { + compatible = (char *)get_property(dn, "compatible", NULL); + if (!compatible) + continue; + + if (strstr(compatible, "CBEA,platform-spider-pic")) + spider_reg = *(long *)get_property(dn,"reg", NULL); + else if (strstr(compatible, "sti,platform-spider-pic")) { + spider_init_IRQ_hardcoded(); + return; + } else + continue; + + if (!spider_reg) + printk("interrupt controller does not have reg property !\n"); + + n = prom_n_addr_cells(dn); + + if ( n != 2) + printk("reg property with invalid number of elements \n"); + + spider_pics[node] = ioremap(spider_reg, 0x800); + + printk("SPIDER addr: %lx with %i addr_cells mapped to %p\n", + spider_reg, n, spider_pics[node]); + + for (n = 0; n < IIC_NUM_EXT; n++) { + int irq = n + IIC_EXT_OFFSET + node * IIC_NODE_STRIDE; + get_irq_desc(irq)->handler = &spider_pic; } + + /* do not mask any interrupts because of level */ + out_be32(spider_pics[node] + TIR_MSK, 0x0); + + /* disable edge detection clear */ + /* out_be32(spider_pics[node] + TIR_EDC, 0x0); */ + + /* enable interrupt packets to be output */ + out_be32(spider_pics[node] + TIR_PIEN, + in_be32(spider_pics[node] + TIR_PIEN) | 0x1); + + /* Enable the interrupt detection enable bit. Do this last! */ + out_be32(spider_pics[node] + TIR_DEN, + in_be32(spider_pics[node] + TIR_DEN) | 0x1); + + node++; } } diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c index d75ae03..269dda4 100644 --- a/arch/powerpc/platforms/cell/spu_base.c +++ b/arch/powerpc/platforms/cell/spu_base.c @@ -32,7 +32,7 @@ #include <asm/io.h> #include <asm/prom.h> -#include <asm/semaphore.h> +#include <linux/mutex.h> #include <asm/spu.h> #include <asm/mmu_context.h> @@ -111,7 +111,7 @@ static int __spu_trap_data_seg(struct spu *spu, unsigned long ea) extern int hash_page(unsigned long ea, unsigned long access, unsigned long trap); //XXX static int __spu_trap_data_map(struct spu *spu, unsigned long ea, u64 dsisr) { - pr_debug("%s\n", __FUNCTION__); + pr_debug("%s, %lx, %lx\n", __FUNCTION__, dsisr, ea); /* Handle kernel space hash faults immediately. User hash faults need to be deferred to process context. */ @@ -168,7 +168,7 @@ static int __spu_trap_halt(struct spu *spu) static int __spu_trap_tag_group(struct spu *spu) { pr_debug("%s\n", __FUNCTION__); - /* wake_up(&spu->dma_wq); */ + spu->mfc_callback(spu); return 0; } @@ -242,6 +242,8 @@ spu_irq_class_1(int irq, void *data, struct pt_regs *regs) spu_mfc_dsisr_set(spu, 0ul); spu_int_stat_clear(spu, 1, stat); spin_unlock(&spu->register_lock); + pr_debug("%s: %lx %lx %lx %lx\n", __FUNCTION__, mask, stat, + dar, dsisr); if (stat & 1) /* segment fault */ __spu_trap_data_seg(spu, dar); @@ -342,7 +344,7 @@ spu_free_irqs(struct spu *spu) } static LIST_HEAD(spu_list); -static DECLARE_MUTEX(spu_mutex); +static DEFINE_MUTEX(spu_mutex); static void spu_init_channels(struct spu *spu) { @@ -382,7 +384,7 @@ struct spu *spu_alloc(void) { struct spu *spu; - down(&spu_mutex); + mutex_lock(&spu_mutex); if (!list_empty(&spu_list)) { spu = list_entry(spu_list.next, struct spu, list); list_del_init(&spu->list); @@ -391,7 +393,7 @@ struct spu *spu_alloc(void) pr_debug("No SPU left\n"); spu = NULL; } - up(&spu_mutex); + mutex_unlock(&spu_mutex); if (spu) spu_init_channels(spu); @@ -402,9 +404,9 @@ EXPORT_SYMBOL_GPL(spu_alloc); void spu_free(struct spu *spu) { - down(&spu_mutex); + mutex_lock(&spu_mutex); list_add_tail(&spu->list, &spu_list); - up(&spu_mutex); + mutex_unlock(&spu_mutex); } EXPORT_SYMBOL_GPL(spu_free); @@ -484,14 +486,13 @@ int spu_irq_class_1_bottom(struct spu *spu) ea = spu->dar; dsisr = spu->dsisr; - if (dsisr & MFC_DSISR_PTE_NOT_FOUND) { + if (dsisr & (MFC_DSISR_PTE_NOT_FOUND | MFC_DSISR_ACCESS_DENIED)) { access = (_PAGE_PRESENT | _PAGE_USER); access |= (dsisr & MFC_DSISR_ACCESS_PUT) ? _PAGE_RW : 0UL; if (hash_page(ea, access, 0x300) != 0) error |= CLASS1_ENABLE_STORAGE_FAULT_INTR; } - if ((error & CLASS1_ENABLE_STORAGE_FAULT_INTR) || - (dsisr & MFC_DSISR_ACCESS_DENIED)) { + if (error & CLASS1_ENABLE_STORAGE_FAULT_INTR) { if ((ret = spu_handle_mm_fault(spu)) != 0) error |= CLASS1_ENABLE_STORAGE_FAULT_INTR; else @@ -568,6 +569,11 @@ static int __init spu_map_device(struct spu *spu, struct device_node *spe) if (!spu->local_store) goto out; + prop = get_property(spe, "problem", NULL); + if (!prop) + goto out_unmap; + spu->problem_phys = *(unsigned long *)prop; + spu->problem= map_spe_prop(spe, "problem"); if (!spu->problem) goto out_unmap; @@ -632,15 +638,16 @@ static int __init create_spu(struct device_node *spe) spu->ibox_callback = NULL; spu->wbox_callback = NULL; spu->stop_callback = NULL; + spu->mfc_callback = NULL; - down(&spu_mutex); + mutex_lock(&spu_mutex); spu->number = number++; ret = spu_request_irqs(spu); if (ret) goto out_unmap; list_add(&spu->list, &spu_list); - up(&spu_mutex); + mutex_unlock(&spu_mutex); pr_debug(KERN_DEBUG "Using SPE %s %02x %p %p %p %p %d\n", spu->name, spu->isrc, spu->local_store, @@ -648,7 +655,7 @@ static int __init create_spu(struct device_node *spe) goto out; out_unmap: - up(&spu_mutex); + mutex_unlock(&spu_mutex); spu_unmap(spu); out_free: kfree(spu); @@ -668,10 +675,10 @@ static void destroy_spu(struct spu *spu) static void cleanup_spu_base(void) { struct spu *spu, *tmp; - down(&spu_mutex); + mutex_lock(&spu_mutex); list_for_each_entry_safe(spu, tmp, &spu_list, list) destroy_spu(spu); - up(&spu_mutex); + mutex_unlock(&spu_mutex); } module_exit(cleanup_spu_base); diff --git a/arch/powerpc/platforms/cell/spu_callbacks.c b/arch/powerpc/platforms/cell/spu_callbacks.c new file mode 100644 index 0000000..3a4245c --- /dev/null +++ b/arch/powerpc/platforms/cell/spu_callbacks.c @@ -0,0 +1,345 @@ +/* + * System call callback functions for SPUs + */ + +#define DEBUG + +#include <linux/kallsyms.h> +#include <linux/module.h> +#include <linux/syscalls.h> + +#include <asm/spu.h> +#include <asm/syscalls.h> +#include <asm/unistd.h> + +/* + * This table defines the system calls that an SPU can call. + * It is currently a subset of the 64 bit powerpc system calls, + * with the exact semantics. + * + * The reasons for disabling some of the system calls are: + * 1. They interact with the way SPU syscalls are handled + * and we can't let them execute ever: + * restart_syscall, exit, for, execve, ptrace, ... + * 2. They are deprecated and replaced by other means: + * uselib, pciconfig_*, sysfs, ... + * 3. They are somewhat interacting with the system in a way + * we don't want an SPU to: + * reboot, init_module, mount, kexec_load + * 4. They are optional and we can't rely on them being + * linked into the kernel. Unfortunately, the cond_syscall + * helper does not work here as it does not add the necessary + * opd symbols: + * mbind, mq_open, ipc, ... + */ + +void *spu_syscall_table[] = { + [__NR_restart_syscall] sys_ni_syscall, /* sys_restart_syscall */ + [__NR_exit] sys_ni_syscall, /* sys_exit */ + [__NR_fork] sys_ni_syscall, /* ppc_fork */ + [__NR_read] sys_read, + [__NR_write] sys_write, + [__NR_open] sys_open, + [__NR_close] sys_close, + [__NR_waitpid] sys_waitpid, + [__NR_creat] sys_creat, + [__NR_link] sys_link, + [__NR_unlink] sys_unlink, + [__NR_execve] sys_ni_syscall, /* sys_execve */ + [__NR_chdir] sys_chdir, + [__NR_time] sys_time, + [__NR_mknod] sys_mknod, + [__NR_chmod] sys_chmod, + [__NR_lchown] sys_lchown, + [__NR_break] sys_ni_syscall, + [__NR_oldstat] sys_ni_syscall, + [__NR_lseek] sys_lseek, + [__NR_getpid] sys_getpid, + [__NR_mount] sys_ni_syscall, /* sys_mount */ + [__NR_umount] sys_ni_syscall, + [__NR_setuid] sys_setuid, + [__NR_getuid] sys_getuid, + [__NR_stime] sys_stime, + [__NR_ptrace] sys_ni_syscall, /* sys_ptrace */ + [__NR_alarm] sys_alarm, + [__NR_oldfstat] sys_ni_syscall, + [__NR_pause] sys_ni_syscall, /* sys_pause */ + [__NR_utime] sys_ni_syscall, /* sys_utime */ + [__NR_stty] sys_ni_syscall, + [__NR_gtty] sys_ni_syscall, + [__NR_access] sys_access, + [__NR_nice] sys_nice, + [__NR_ftime] sys_ni_syscall, + [__NR_sync] sys_sync, + [__NR_kill] sys_kill, + [__NR_rename] sys_rename, + [__NR_mkdir] sys_mkdir, + [__NR_rmdir] sys_rmdir, + [__NR_dup] sys_dup, + [__NR_pipe] sys_pipe, + [__NR_times] sys_times, + [__NR_prof] sys_ni_syscall, + [__NR_brk] sys_brk, + [__NR_setgid] sys_setgid, + [__NR_getgid] sys_getgid, + [__NR_signal] sys_ni_syscall, /* sys_signal */ + [__NR_geteuid] sys_geteuid, + [__NR_getegid] sys_getegid, + [__NR_acct] sys_ni_syscall, /* sys_acct */ + [__NR_umount2] sys_ni_syscall, /* sys_umount */ + [__NR_lock] sys_ni_syscall, + [__NR_ioctl] sys_ioctl, + [__NR_fcntl] sys_fcntl, + [__NR_mpx] sys_ni_syscall, + [__NR_setpgid] sys_setpgid, + [__NR_ulimit] sys_ni_syscall, + [__NR_oldolduname] sys_ni_syscall, + [__NR_umask] sys_umask, + [__NR_chroot] sys_chroot, + [__NR_ustat] sys_ni_syscall, /* sys_ustat */ + [__NR_dup2] sys_dup2, + [__NR_getppid] sys_getppid, + [__NR_getpgrp] sys_getpgrp, + [__NR_setsid] sys_setsid, + [__NR_sigaction] sys_ni_syscall, + [__NR_sgetmask] sys_sgetmask, + [__NR_ssetmask] sys_ssetmask, + [__NR_setreuid] sys_setreuid, + [__NR_setregid] sys_setregid, + [__NR_sigsuspend] sys_ni_syscall, + [__NR_sigpending] sys_ni_syscall, + [__NR_sethostname] sys_sethostname, + [__NR_setrlimit] sys_setrlimit, + [__NR_getrlimit] sys_ni_syscall, + [__NR_getrusage] sys_getrusage, + [__NR_gettimeofday] sys_gettimeofday, + [__NR_settimeofday] sys_settimeofday, + [__NR_getgroups] sys_getgroups, + [__NR_setgroups] sys_setgroups, + [__NR_select] sys_ni_syscall, + [__NR_symlink] sys_symlink, + [__NR_oldlstat] sys_ni_syscall, + [__NR_readlink] sys_readlink, + [__NR_uselib] sys_ni_syscall, /* sys_uselib */ + [__NR_swapon] sys_ni_syscall, /* sys_swapon */ + [__NR_reboot] sys_ni_syscall, /* sys_reboot */ + [__NR_readdir] sys_ni_syscall, + [__NR_mmap] sys_mmap, + [__NR_munmap] sys_munmap, + [__NR_truncate] sys_truncate, + [__NR_ftruncate] sys_ftruncate, + [__NR_fchmod] sys_fchmod, + [__NR_fchown] sys_fchown, + [__NR_getpriority] sys_getpriority, + [__NR_setpriority] sys_setpriority, + [__NR_profil] sys_ni_syscall, + [__NR_statfs] sys_ni_syscall, /* sys_statfs */ + [__NR_fstatfs] sys_ni_syscall, /* sys_fstatfs */ + [__NR_ioperm] sys_ni_syscall, + [__NR_socketcall] sys_socketcall, + [__NR_syslog] sys_syslog, + [__NR_setitimer] sys_setitimer, + [__NR_getitimer] sys_getitimer, + [__NR_stat] sys_newstat, + [__NR_lstat] sys_newlstat, + [__NR_fstat] sys_newfstat, + [__NR_olduname] sys_ni_syscall, + [__NR_iopl] sys_ni_syscall, + [__NR_vhangup] sys_vhangup, + [__NR_idle] sys_ni_syscall, + [__NR_vm86] sys_ni_syscall, + [__NR_wait4] sys_wait4, + [__NR_swapoff] sys_ni_syscall, /* sys_swapoff */ + [__NR_sysinfo] sys_sysinfo, + [__NR_ipc] sys_ni_syscall, /* sys_ipc */ + [__NR_fsync] sys_fsync, + [__NR_sigreturn] sys_ni_syscall, + [__NR_clone] sys_ni_syscall, /* ppc_clone */ + [__NR_setdomainname] sys_setdomainname, + [__NR_uname] ppc_newuname, + [__NR_modify_ldt] sys_ni_syscall, + [__NR_adjtimex] sys_adjtimex, + [__NR_mprotect] sys_mprotect, + [__NR_sigprocmask] sys_ni_syscall, + [__NR_create_module] sys_ni_syscall, + [__NR_init_module] sys_ni_syscall, /* sys_init_module */ + [__NR_delete_module] sys_ni_syscall, /* sys_delete_module */ + [__NR_get_kernel_syms] sys_ni_syscall, + [__NR_quotactl] sys_ni_syscall, /* sys_quotactl */ + [__NR_getpgid] sys_getpgid, + [__NR_fchdir] sys_fchdir, + [__NR_bdflush] sys_bdflush, + [__NR_sysfs] sys_ni_syscall, /* sys_sysfs */ + [__NR_personality] ppc64_personality, + [__NR_afs_syscall] sys_ni_syscall, + [__NR_setfsuid] sys_setfsuid, + [__NR_setfsgid] sys_setfsgid, + [__NR__llseek] sys_llseek, + [__NR_getdents] sys_getdents, + [__NR__newselect] sys_select, + [__NR_flock] sys_flock, + [__NR_msync] sys_msync, + [__NR_readv] sys_readv, + [__NR_writev] sys_writev, + [__NR_getsid] sys_getsid, + [__NR_fdatasync] sys_fdatasync, + [__NR__sysctl] sys_ni_syscall, /* sys_sysctl */ + [__NR_mlock] sys_mlock, + [__NR_munlock] sys_munlock, + [__NR_mlockall] sys_mlockall, + [__NR_munlockall] sys_munlockall, + [__NR_sched_setparam] sys_sched_setparam, + [__NR_sched_getparam] sys_sched_getparam, + [__NR_sched_setscheduler] sys_sched_setscheduler, + [__NR_sched_getscheduler] sys_sched_getscheduler, + [__NR_sched_yield] sys_sched_yield, + [__NR_sched_get_priority_max] sys_sched_get_priority_max, + [__NR_sched_get_priority_min] sys_sched_get_priority_min, + [__NR_sched_rr_get_interval] sys_sched_rr_get_interval, + [__NR_nanosleep] sys_nanosleep, + [__NR_mremap] sys_mremap, + [__NR_setresuid] sys_setresuid, + [__NR_getresuid] sys_getresuid, + [__NR_query_module] sys_ni_syscall, + [__NR_poll] sys_poll, + [__NR_nfsservctl] sys_ni_syscall, /* sys_nfsservctl */ + [__NR_setresgid] sys_setresgid, + [__NR_getresgid] sys_getresgid, + [__NR_prctl] sys_prctl, + [__NR_rt_sigreturn] sys_ni_syscall, /* ppc64_rt_sigreturn */ + [__NR_rt_sigaction] sys_ni_syscall, /* sys_rt_sigaction */ + [__NR_rt_sigprocmask] sys_ni_syscall, /* sys_rt_sigprocmask */ + [__NR_rt_sigpending] sys_ni_syscall, /* sys_rt_sigpending */ + [__NR_rt_sigtimedwait] sys_ni_syscall, /* sys_rt_sigtimedwait */ + [__NR_rt_sigqueueinfo] sys_ni_syscall, /* sys_rt_sigqueueinfo */ + [__NR_rt_sigsuspend] sys_ni_syscall, /* sys_rt_sigsuspend */ + [__NR_pread64] sys_pread64, + [__NR_pwrite64] sys_pwrite64, + [__NR_chown] sys_chown, + [__NR_getcwd] sys_getcwd, + [__NR_capget] sys_capget, + [__NR_capset] sys_capset, + [__NR_sigaltstack] sys_ni_syscall, /* sys_sigaltstack */ + [__NR_sendfile] sys_sendfile64, + [__NR_getpmsg] sys_ni_syscall, + [__NR_putpmsg] sys_ni_syscall, + [__NR_vfork] sys_ni_syscall, /* ppc_vfork */ + [__NR_ugetrlimit] sys_getrlimit, + [__NR_readahead] sys_readahead, + [192] sys_ni_syscall, + [193] sys_ni_syscall, + [194] sys_ni_syscall, + [195] sys_ni_syscall, + [196] sys_ni_syscall, + [197] sys_ni_syscall, + [__NR_pciconfig_read] sys_ni_syscall, /* sys_pciconfig_read */ + [__NR_pciconfig_write] sys_ni_syscall, /* sys_pciconfig_write */ + [__NR_pciconfig_iobase] sys_ni_syscall, /* sys_pciconfig_iobase */ + [__NR_multiplexer] sys_ni_syscall, + [__NR_getdents64] sys_getdents64, + [__NR_pivot_root] sys_pivot_root, + [204] sys_ni_syscall, + [__NR_madvise] sys_madvise, + [__NR_mincore] sys_mincore, + [__NR_gettid] sys_gettid, + [__NR_tkill] sys_tkill, + [__NR_setxattr] sys_setxattr, + [__NR_lsetxattr] sys_lsetxattr, + [__NR_fsetxattr] sys_fsetxattr, + [__NR_getxattr] sys_getxattr, + [__NR_lgetxattr] sys_lgetxattr, + [__NR_fgetxattr] sys_fgetxattr, + [__NR_listxattr] sys_listxattr, + [__NR_llistxattr] sys_llistxattr, + [__NR_flistxattr] sys_flistxattr, + [__NR_removexattr] sys_removexattr, + [__NR_lremovexattr] sys_lremovexattr, + [__NR_fremovexattr] sys_fremovexattr, + [__NR_futex] sys_futex, + [__NR_sched_setaffinity] sys_sched_setaffinity, + [__NR_sched_getaffinity] sys_sched_getaffinity, + [__NR_tuxcall] sys_ni_syscall, + [226] sys_ni_syscall, + [__NR_io_setup] sys_io_setup, + [__NR_io_destroy] sys_io_destroy, + [__NR_io_getevents] sys_io_getevents, + [__NR_io_submit] sys_io_submit, + [__NR_io_cancel] sys_io_cancel, + [__NR_set_tid_address] sys_ni_syscall, /* sys_set_tid_address */ + [__NR_fadvise64] sys_fadvise64, + [__NR_exit_group] sys_ni_syscall, /* sys_exit_group */ + [__NR_lookup_dcookie] sys_ni_syscall, /* sys_lookup_dcookie */ + [__NR_epoll_create] sys_epoll_create, + [__NR_epoll_ctl] sys_epoll_ctl, + [__NR_epoll_wait] sys_epoll_wait, + [__NR_remap_file_pages] sys_remap_file_pages, + [__NR_timer_create] sys_timer_create, + [__NR_timer_settime] sys_timer_settime, + [__NR_timer_gettime] sys_timer_gettime, + [__NR_timer_getoverrun] sys_timer_getoverrun, + [__NR_timer_delete] sys_timer_delete, + [__NR_clock_settime] sys_clock_settime, + [__NR_clock_gettime] sys_clock_gettime, + [__NR_clock_getres] sys_clock_getres, + [__NR_clock_nanosleep] sys_clock_nanosleep, + [__NR_swapcontext] sys_ni_syscall, /* ppc64_swapcontext */ + [__NR_tgkill] sys_tgkill, + [__NR_utimes] sys_utimes, + [__NR_statfs64] sys_statfs64, + [__NR_fstatfs64] sys_fstatfs64, + [254] sys_ni_syscall, + [__NR_rtas] ppc_rtas, + [256] sys_ni_syscall, + [257] sys_ni_syscall, + [258] sys_ni_syscall, + [__NR_mbind] sys_ni_syscall, /* sys_mbind */ + [__NR_get_mempolicy] sys_ni_syscall, /* sys_get_mempolicy */ + [__NR_set_mempolicy] sys_ni_syscall, /* sys_set_mempolicy */ + [__NR_mq_open] sys_ni_syscall, /* sys_mq_open */ + [__NR_mq_unlink] sys_ni_syscall, /* sys_mq_unlink */ + [__NR_mq_timedsend] sys_ni_syscall, /* sys_mq_timedsend */ + [__NR_mq_timedreceive] sys_ni_syscall, /* sys_mq_timedreceive */ + [__NR_mq_notify] sys_ni_syscall, /* sys_mq_notify */ + [__NR_mq_getsetattr] sys_ni_syscall, /* sys_mq_getsetattr */ + [__NR_kexec_load] sys_ni_syscall, /* sys_kexec_load */ + [__NR_add_key] sys_ni_syscall, /* sys_add_key */ + [__NR_request_key] sys_ni_syscall, /* sys_request_key */ + [__NR_keyctl] sys_ni_syscall, /* sys_keyctl */ + [__NR_waitid] sys_ni_syscall, /* sys_waitid */ + [__NR_ioprio_set] sys_ni_syscall, /* sys_ioprio_set */ + [__NR_ioprio_get] sys_ni_syscall, /* sys_ioprio_get */ + [__NR_inotify_init] sys_ni_syscall, /* sys_inotify_init */ + [__NR_inotify_add_watch] sys_ni_syscall, /* sys_inotify_add_watch */ + [__NR_inotify_rm_watch] sys_ni_syscall, /* sys_inotify_rm_watch */ + [__NR_spu_run] sys_ni_syscall, /* sys_spu_run */ + [__NR_spu_create] sys_ni_syscall, /* sys_spu_create */ + [__NR_pselect6] sys_ni_syscall, /* sys_pselect */ + [__NR_ppoll] sys_ni_syscall, /* sys_ppoll */ + [__NR_unshare] sys_unshare, +}; + +long spu_sys_callback(struct spu_syscall_block *s) +{ + long (*syscall)(u64 a1, u64 a2, u64 a3, u64 a4, u64 a5, u64 a6); + + BUILD_BUG_ON(ARRAY_SIZE(spu_syscall_table) != __NR_syscalls); + + syscall = spu_syscall_table[s->nr_ret]; + + if (s->nr_ret >= __NR_syscalls) { + pr_debug("%s: invalid syscall #%ld", __FUNCTION__, s->nr_ret); + return -ENOSYS; + } + +#ifdef DEBUG + print_symbol(KERN_DEBUG "SPU-syscall %s:", (unsigned long)syscall); + printk("syscall%ld(%lx, %lx, %lx, %lx, %lx, %lx)\n", + s->nr_ret, + s->parm[0], s->parm[1], s->parm[2], + s->parm[3], s->parm[4], s->parm[5]); +#endif + + return syscall(s->parm[0], s->parm[1], s->parm[2], + s->parm[3], s->parm[4], s->parm[5]); +} +EXPORT_SYMBOL_GPL(spu_sys_callback); diff --git a/arch/powerpc/platforms/cell/spufs/backing_ops.c b/arch/powerpc/platforms/cell/spufs/backing_ops.c index a5c489a5..f1d35dd 100644 --- a/arch/powerpc/platforms/cell/spufs/backing_ops.c +++ b/arch/powerpc/platforms/cell/spufs/backing_ops.c @@ -285,6 +285,49 @@ static void spu_backing_runcntl_stop(struct spu_context *ctx) spu_backing_runcntl_write(ctx, SPU_RUNCNTL_STOP); } +static int spu_backing_set_mfc_query(struct spu_context * ctx, u32 mask, + u32 mode) +{ + struct spu_problem_collapsed *prob = &ctx->csa.prob; + int ret; + + spin_lock(&ctx->csa.register_lock); + ret = -EAGAIN; + if (prob->dma_querytype_RW) + goto out; + ret = 0; + /* FIXME: what are the side-effects of this? */ + prob->dma_querymask_RW = mask; + prob->dma_querytype_RW = mode; +out: + spin_unlock(&ctx->csa.register_lock); + + return ret; +} + +static u32 spu_backing_read_mfc_tagstatus(struct spu_context * ctx) +{ + return ctx->csa.prob.dma_tagstatus_R; +} + +static u32 spu_backing_get_mfc_free_elements(struct spu_context *ctx) +{ + return ctx->csa.prob.dma_qstatus_R; +} + +static int spu_backing_send_mfc_command(struct spu_context *ctx, + struct mfc_dma_command *cmd) +{ + int ret; + + spin_lock(&ctx->csa.register_lock); + ret = -EAGAIN; + /* FIXME: set up priv2->puq */ + spin_unlock(&ctx->csa.register_lock); + + return ret; +} + struct spu_context_ops spu_backing_ops = { .mbox_read = spu_backing_mbox_read, .mbox_stat_read = spu_backing_mbox_stat_read, @@ -305,4 +348,8 @@ struct spu_context_ops spu_backing_ops = { .get_ls = spu_backing_get_ls, .runcntl_write = spu_backing_runcntl_write, .runcntl_stop = spu_backing_runcntl_stop, + .set_mfc_query = spu_backing_set_mfc_query, + .read_mfc_tagstatus = spu_backing_read_mfc_tagstatus, + .get_mfc_free_elements = spu_backing_get_mfc_free_elements, + .send_mfc_command = spu_backing_send_mfc_command, }; diff --git a/arch/powerpc/platforms/cell/spufs/context.c b/arch/powerpc/platforms/cell/spufs/context.c index 336f238..8bb33ab 100644 --- a/arch/powerpc/platforms/cell/spufs/context.c +++ b/arch/powerpc/platforms/cell/spufs/context.c @@ -27,7 +27,7 @@ #include <asm/spu_csa.h> #include "spufs.h" -struct spu_context *alloc_spu_context(struct address_space *local_store) +struct spu_context *alloc_spu_context(void) { struct spu_context *ctx; ctx = kmalloc(sizeof *ctx, GFP_KERNEL); @@ -47,10 +47,17 @@ struct spu_context *alloc_spu_context(struct address_space *local_store) init_waitqueue_head(&ctx->ibox_wq); init_waitqueue_head(&ctx->wbox_wq); init_waitqueue_head(&ctx->stop_wq); + init_waitqueue_head(&ctx->mfc_wq); ctx->ibox_fasync = NULL; ctx->wbox_fasync = NULL; + ctx->mfc_fasync = NULL; + ctx->mfc = NULL; + ctx->tagwait = 0; ctx->state = SPU_STATE_SAVED; - ctx->local_store = local_store; + ctx->local_store = NULL; + ctx->cntl = NULL; + ctx->signal1 = NULL; + ctx->signal2 = NULL; ctx->spu = NULL; ctx->ops = &spu_backing_ops; ctx->owner = get_task_mm(current); @@ -68,8 +75,6 @@ void destroy_spu_context(struct kref *kref) ctx = container_of(kref, struct spu_context, kref); down_write(&ctx->state_sema); spu_deactivate(ctx); - ctx->ibox_fasync = NULL; - ctx->wbox_fasync = NULL; up_write(&ctx->state_sema); spu_fini_csa(&ctx->csa); kfree(ctx); @@ -109,7 +114,16 @@ void spu_release(struct spu_context *ctx) void spu_unmap_mappings(struct spu_context *ctx) { - unmap_mapping_range(ctx->local_store, 0, LS_SIZE, 1); + if (ctx->local_store) + unmap_mapping_range(ctx->local_store, 0, LS_SIZE, 1); + if (ctx->mfc) + unmap_mapping_range(ctx->mfc, 0, 0x4000, 1); + if (ctx->cntl) + unmap_mapping_range(ctx->cntl, 0, 0x4000, 1); + if (ctx->signal1) + unmap_mapping_range(ctx->signal1, 0, 0x4000, 1); + if (ctx->signal2) + unmap_mapping_range(ctx->signal2, 0, 0x4000, 1); } int spu_acquire_runnable(struct spu_context *ctx) diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c index dfa649c..366185e 100644 --- a/arch/powerpc/platforms/cell/spufs/file.c +++ b/arch/powerpc/platforms/cell/spufs/file.c @@ -20,6 +20,8 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +#undef DEBUG + #include <linux/fs.h> #include <linux/ioctl.h> #include <linux/module.h> @@ -39,8 +41,10 @@ static int spufs_mem_open(struct inode *inode, struct file *file) { struct spufs_inode_info *i = SPUFS_I(inode); - file->private_data = i->i_ctx; - file->f_mapping = i->i_ctx->local_store; + struct spu_context *ctx = i->i_ctx; + file->private_data = ctx; + file->f_mapping = inode->i_mapping; + ctx->local_store = inode->i_mapping; return 0; } @@ -84,7 +88,7 @@ spufs_mem_write(struct file *file, const char __user *buffer, return ret; } -#ifdef CONFIG_SPARSEMEM +#ifdef CONFIG_SPUFS_MMAP static struct page * spufs_mem_mmap_nopage(struct vm_area_struct *vma, unsigned long address, int *type) @@ -136,11 +140,113 @@ static struct file_operations spufs_mem_fops = { .read = spufs_mem_read, .write = spufs_mem_write, .llseek = generic_file_llseek, -#ifdef CONFIG_SPARSEMEM +#ifdef CONFIG_SPUFS_MMAP .mmap = spufs_mem_mmap, #endif }; +#ifdef CONFIG_SPUFS_MMAP +static struct page *spufs_ps_nopage(struct vm_area_struct *vma, + unsigned long address, + int *type, unsigned long ps_offs) +{ + struct page *page = NOPAGE_SIGBUS; + int fault_type = VM_FAULT_SIGBUS; + struct spu_context *ctx = vma->vm_file->private_data; + unsigned long offset = address - vma->vm_start; + unsigned long area; + int ret; + + offset += vma->vm_pgoff << PAGE_SHIFT; + if (offset >= 0x4000) + goto out; + + ret = spu_acquire_runnable(ctx); + if (ret) + goto out; + + area = ctx->spu->problem_phys + ps_offs; + page = pfn_to_page((area + offset) >> PAGE_SHIFT); + fault_type = VM_FAULT_MINOR; + page_cache_get(page); + + spu_release(ctx); + + out: + if (type) + *type = fault_type; + + return page; +} + +static struct page *spufs_cntl_mmap_nopage(struct vm_area_struct *vma, + unsigned long address, int *type) +{ + return spufs_ps_nopage(vma, address, type, 0x4000); +} + +static struct vm_operations_struct spufs_cntl_mmap_vmops = { + .nopage = spufs_cntl_mmap_nopage, +}; + +/* + * mmap support for problem state control area [0x4000 - 0x4fff]. + * Mapping this area requires that the application have CAP_SYS_RAWIO, + * as these registers require special care when read/writing. + */ +static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) +{ + if (!(vma->vm_flags & VM_SHARED)) + return -EINVAL; + + if (!capable(CAP_SYS_RAWIO)) + return -EPERM; + + vma->vm_flags |= VM_RESERVED; + vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) + | _PAGE_NO_CACHE); + + vma->vm_ops = &spufs_cntl_mmap_vmops; + return 0; +} +#endif + +static int spufs_cntl_open(struct inode *inode, struct file *file) +{ + struct spufs_inode_info *i = SPUFS_I(inode); + struct spu_context *ctx = i->i_ctx; + + file->private_data = ctx; + file->f_mapping = inode->i_mapping; + ctx->cntl = inode->i_mapping; + return 0; +} + +static ssize_t +spufs_cntl_read(struct file *file, char __user *buffer, + size_t size, loff_t *pos) +{ + /* FIXME: read from spu status */ + return -EINVAL; +} + +static ssize_t +spufs_cntl_write(struct file *file, const char __user *buffer, + size_t size, loff_t *pos) +{ + /* FIXME: write to runctl bit */ + return -EINVAL; +} + +static struct file_operations spufs_cntl_fops = { + .open = spufs_cntl_open, + .read = spufs_cntl_read, + .write = spufs_cntl_write, +#ifdef CONFIG_SPUFS_MMAP + .mmap = spufs_cntl_mmap, +#endif +}; + static int spufs_regs_open(struct inode *inode, struct file *file) { @@ -501,6 +607,16 @@ static struct file_operations spufs_wbox_stat_fops = { .read = spufs_wbox_stat_read, }; +static int spufs_signal1_open(struct inode *inode, struct file *file) +{ + struct spufs_inode_info *i = SPUFS_I(inode); + struct spu_context *ctx = i->i_ctx; + file->private_data = ctx; + file->f_mapping = inode->i_mapping; + ctx->signal1 = inode->i_mapping; + return nonseekable_open(inode, file); +} + static ssize_t spufs_signal1_read(struct file *file, char __user *buf, size_t len, loff_t *pos) { @@ -541,12 +657,50 @@ static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, return 4; } +#ifdef CONFIG_SPUFS_MMAP +static struct page *spufs_signal1_mmap_nopage(struct vm_area_struct *vma, + unsigned long address, int *type) +{ + return spufs_ps_nopage(vma, address, type, 0x14000); +} + +static struct vm_operations_struct spufs_signal1_mmap_vmops = { + .nopage = spufs_signal1_mmap_nopage, +}; + +static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) +{ + if (!(vma->vm_flags & VM_SHARED)) + return -EINVAL; + + vma->vm_flags |= VM_RESERVED; + vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) + | _PAGE_NO_CACHE); + + vma->vm_ops = &spufs_signal1_mmap_vmops; + return 0; +} +#endif + static struct file_operations spufs_signal1_fops = { - .open = spufs_pipe_open, + .open = spufs_signal1_open, .read = spufs_signal1_read, .write = spufs_signal1_write, +#ifdef CONFIG_SPUFS_MMAP + .mmap = spufs_signal1_mmap, +#endif }; +static int spufs_signal2_open(struct inode *inode, struct file *file) +{ + struct spufs_inode_info *i = SPUFS_I(inode); + struct spu_context *ctx = i->i_ctx; + file->private_data = ctx; + file->f_mapping = inode->i_mapping; + ctx->signal2 = inode->i_mapping; + return nonseekable_open(inode, file); +} + static ssize_t spufs_signal2_read(struct file *file, char __user *buf, size_t len, loff_t *pos) { @@ -589,10 +743,39 @@ static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, return 4; } +#ifdef CONFIG_SPUFS_MMAP +static struct page *spufs_signal2_mmap_nopage(struct vm_area_struct *vma, + unsigned long address, int *type) +{ + return spufs_ps_nopage(vma, address, type, 0x1c000); +} + +static struct vm_operations_struct spufs_signal2_mmap_vmops = { + .nopage = spufs_signal2_mmap_nopage, +}; + +static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) +{ + if (!(vma->vm_flags & VM_SHARED)) + return -EINVAL; + + /* FIXME: */ + vma->vm_flags |= VM_RESERVED; + vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) + | _PAGE_NO_CACHE); + + vma->vm_ops = &spufs_signal2_mmap_vmops; + return 0; +} +#endif + static struct file_operations spufs_signal2_fops = { - .open = spufs_pipe_open, + .open = spufs_signal2_open, .read = spufs_signal2_read, .write = spufs_signal2_write, +#ifdef CONFIG_SPUFS_MMAP + .mmap = spufs_signal2_mmap, +#endif }; static void spufs_signal1_type_set(void *data, u64 val) @@ -641,6 +824,332 @@ static u64 spufs_signal2_type_get(void *data) DEFINE_SIMPLE_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, spufs_signal2_type_set, "%llu"); +#ifdef CONFIG_SPUFS_MMAP +static struct page *spufs_mfc_mmap_nopage(struct vm_area_struct *vma, + unsigned long address, int *type) +{ + return spufs_ps_nopage(vma, address, type, 0x3000); +} + +static struct vm_operations_struct spufs_mfc_mmap_vmops = { + .nopage = spufs_mfc_mmap_nopage, +}; + +/* + * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. + * Mapping this area requires that the application have CAP_SYS_RAWIO, + * as these registers require special care when read/writing. + */ +static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) +{ + if (!(vma->vm_flags & VM_SHARED)) + return -EINVAL; + + if (!capable(CAP_SYS_RAWIO)) + return -EPERM; + + vma->vm_flags |= VM_RESERVED; + vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) + | _PAGE_NO_CACHE); + + vma->vm_ops = &spufs_mfc_mmap_vmops; + return 0; +} +#endif + +static int spufs_mfc_open(struct inode *inode, struct file *file) +{ + struct spufs_inode_info *i = SPUFS_I(inode); + struct spu_context *ctx = i->i_ctx; + + /* we don't want to deal with DMA into other processes */ + if (ctx->owner != current->mm) + return -EINVAL; + + if (atomic_read(&inode->i_count) != 1) + return -EBUSY; + + file->private_data = ctx; + return nonseekable_open(inode, file); +} + +/* interrupt-level mfc callback function. */ +void spufs_mfc_callback(struct spu *spu) +{ + struct spu_context *ctx = spu->ctx; + + wake_up_all(&ctx->mfc_wq); + + pr_debug("%s %s\n", __FUNCTION__, spu->name); + if (ctx->mfc_fasync) { + u32 free_elements, tagstatus; + unsigned int mask; + + /* no need for spu_acquire in interrupt context */ + free_elements = ctx->ops->get_mfc_free_elements(ctx); + tagstatus = ctx->ops->read_mfc_tagstatus(ctx); + + mask = 0; + if (free_elements & 0xffff) + mask |= POLLOUT; + if (tagstatus & ctx->tagwait) + mask |= POLLIN; + + kill_fasync(&ctx->mfc_fasync, SIGIO, mask); + } +} + +static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) +{ + /* See if there is one tag group is complete */ + /* FIXME we need locking around tagwait */ + *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; + ctx->tagwait &= ~*status; + if (*status) + return 1; + + /* enable interrupt waiting for any tag group, + may silently fail if interrupts are already enabled */ + ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); + return 0; +} + +static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, + size_t size, loff_t *pos) +{ + struct spu_context *ctx = file->private_data; + int ret = -EINVAL; + u32 status; + + if (size != 4) + goto out; + + spu_acquire(ctx); + if (file->f_flags & O_NONBLOCK) { + status = ctx->ops->read_mfc_tagstatus(ctx); + if (!(status & ctx->tagwait)) + ret = -EAGAIN; + else + ctx->tagwait &= ~status; + } else { + ret = spufs_wait(ctx->mfc_wq, + spufs_read_mfc_tagstatus(ctx, &status)); + } + spu_release(ctx); + + if (ret) + goto out; + + ret = 4; + if (copy_to_user(buffer, &status, 4)) + ret = -EFAULT; + +out: + return ret; +} + +static int spufs_check_valid_dma(struct mfc_dma_command *cmd) +{ + pr_debug("queueing DMA %x %lx %x %x %x\n", cmd->lsa, + cmd->ea, cmd->size, cmd->tag, cmd->cmd); + + switch (cmd->cmd) { + case MFC_PUT_CMD: + case MFC_PUTF_CMD: + case MFC_PUTB_CMD: + case MFC_GET_CMD: + case MFC_GETF_CMD: + case MFC_GETB_CMD: + break; + default: + pr_debug("invalid DMA opcode %x\n", cmd->cmd); + return -EIO; + } + + if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { + pr_debug("invalid DMA alignment, ea %lx lsa %x\n", + cmd->ea, cmd->lsa); + return -EIO; + } + + switch (cmd->size & 0xf) { + case 1: + break; + case 2: + if (cmd->lsa & 1) + goto error; + break; + case 4: + if (cmd->lsa & 3) + goto error; + break; + case 8: + if (cmd->lsa & 7) + goto error; + break; + case 0: + if (cmd->lsa & 15) + goto error; + break; + error: + default: + pr_debug("invalid DMA alignment %x for size %x\n", + cmd->lsa & 0xf, cmd->size); + return -EIO; + } + + if (cmd->size > 16 * 1024) { + pr_debug("invalid DMA size %x\n", cmd->size); + return -EIO; + } + + if (cmd->tag & 0xfff0) { + /* we reserve the higher tag numbers for kernel use */ + pr_debug("invalid DMA tag\n"); + return -EIO; + } + + if (cmd->class) { + /* not supported in this version */ + pr_debug("invalid DMA class\n"); + return -EIO; + } + + return 0; +} + +static int spu_send_mfc_command(struct spu_context *ctx, + struct mfc_dma_command cmd, + int *error) +{ + *error = ctx->ops->send_mfc_command(ctx, &cmd); + if (*error == -EAGAIN) { + /* wait for any tag group to complete + so we have space for the new command */ + ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); + /* try again, because the queue might be + empty again */ + *error = ctx->ops->send_mfc_command(ctx, &cmd); + if (*error == -EAGAIN) + return 0; + } + return 1; +} + +static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, + size_t size, loff_t *pos) +{ + struct spu_context *ctx = file->private_data; + struct mfc_dma_command cmd; + int ret = -EINVAL; + + if (size != sizeof cmd) + goto out; + + ret = -EFAULT; + if (copy_from_user(&cmd, buffer, sizeof cmd)) + goto out; + + ret = spufs_check_valid_dma(&cmd); + if (ret) + goto out; + + spu_acquire_runnable(ctx); + if (file->f_flags & O_NONBLOCK) { + ret = ctx->ops->send_mfc_command(ctx, &cmd); + } else { + int status; + ret = spufs_wait(ctx->mfc_wq, + spu_send_mfc_command(ctx, cmd, &status)); + if (status) + ret = status; + } + spu_release(ctx); + + if (ret) + goto out; + + ctx->tagwait |= 1 << cmd.tag; + +out: + return ret; +} + +static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) +{ + struct spu_context *ctx = file->private_data; + u32 free_elements, tagstatus; + unsigned int mask; + + spu_acquire(ctx); + ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); + free_elements = ctx->ops->get_mfc_free_elements(ctx); + tagstatus = ctx->ops->read_mfc_tagstatus(ctx); + spu_release(ctx); + + poll_wait(file, &ctx->mfc_wq, wait); + + mask = 0; + if (free_elements & 0xffff) + mask |= POLLOUT | POLLWRNORM; + if (tagstatus & ctx->tagwait) + mask |= POLLIN | POLLRDNORM; + + pr_debug("%s: free %d tagstatus %d tagwait %d\n", __FUNCTION__, + free_elements, tagstatus, ctx->tagwait); + + return mask; +} + +static int spufs_mfc_flush(struct file *file) +{ + struct spu_context *ctx = file->private_data; + int ret; + + spu_acquire(ctx); +#if 0 +/* this currently hangs */ + ret = spufs_wait(ctx->mfc_wq, + ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); + if (ret) + goto out; + ret = spufs_wait(ctx->mfc_wq, + ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); +out: +#else + ret = 0; +#endif + spu_release(ctx); + + return ret; +} + +static int spufs_mfc_fsync(struct file *file, struct dentry *dentry, + int datasync) +{ + return spufs_mfc_flush(file); +} + +static int spufs_mfc_fasync(int fd, struct file *file, int on) +{ + struct spu_context *ctx = file->private_data; + + return fasync_helper(fd, file, on, &ctx->mfc_fasync); +} + +static struct file_operations spufs_mfc_fops = { + .open = spufs_mfc_open, + .read = spufs_mfc_read, + .write = spufs_mfc_write, + .poll = spufs_mfc_poll, + .flush = spufs_mfc_flush, + .fsync = spufs_mfc_fsync, + .fasync = spufs_mfc_fasync, +#ifdef CONFIG_SPUFS_MMAP + .mmap = spufs_mfc_mmap, +#endif +}; + static void spufs_npc_set(void *data, u64 val) { struct spu_context *ctx = data; @@ -783,6 +1292,8 @@ struct tree_descr spufs_dir_contents[] = { { "signal2", &spufs_signal2_fops, 0666, }, { "signal1_type", &spufs_signal1_type, 0666, }, { "signal2_type", &spufs_signal2_type, 0666, }, + { "mfc", &spufs_mfc_fops, 0666, }, + { "cntl", &spufs_cntl_fops, 0666, }, { "npc", &spufs_npc_ops, 0666, }, { "fpcr", &spufs_fpcr_fops, 0666, }, { "decr", &spufs_decr_ops, 0666, }, diff --git a/arch/powerpc/platforms/cell/spufs/hw_ops.c b/arch/powerpc/platforms/cell/spufs/hw_ops.c index 5445719..a13a8b5 100644 --- a/arch/powerpc/platforms/cell/spufs/hw_ops.c +++ b/arch/powerpc/platforms/cell/spufs/hw_ops.c @@ -232,6 +232,59 @@ static void spu_hw_runcntl_stop(struct spu_context *ctx) spin_unlock_irq(&ctx->spu->register_lock); } +static int spu_hw_set_mfc_query(struct spu_context * ctx, u32 mask, u32 mode) +{ + struct spu_problem *prob = ctx->spu->problem; + int ret; + + spin_lock_irq(&ctx->spu->register_lock); + ret = -EAGAIN; + if (in_be32(&prob->dma_querytype_RW)) + goto out; + ret = 0; + out_be32(&prob->dma_querymask_RW, mask); + out_be32(&prob->dma_querytype_RW, mode); +out: + spin_unlock_irq(&ctx->spu->register_lock); + return ret; +} + +static u32 spu_hw_read_mfc_tagstatus(struct spu_context * ctx) +{ + return in_be32(&ctx->spu->problem->dma_tagstatus_R); +} + +static u32 spu_hw_get_mfc_free_elements(struct spu_context *ctx) +{ + return in_be32(&ctx->spu->problem->dma_qstatus_R); +} + +static int spu_hw_send_mfc_command(struct spu_context *ctx, + struct mfc_dma_command *cmd) +{ + u32 status; + struct spu_problem *prob = ctx->spu->problem; + + spin_lock_irq(&ctx->spu->register_lock); + out_be32(&prob->mfc_lsa_W, cmd->lsa); + out_be64(&prob->mfc_ea_W, cmd->ea); + out_be32(&prob->mfc_union_W.by32.mfc_size_tag32, + cmd->size << 16 | cmd->tag); + out_be32(&prob->mfc_union_W.by32.mfc_class_cmd32, + cmd->class << 16 | cmd->cmd); + status = in_be32(&prob->mfc_union_W.by32.mfc_class_cmd32); + spin_unlock_irq(&ctx->spu->register_lock); + + switch (status & 0xffff) { + case 0: + return 0; + case 2: + return -EAGAIN; + default: + return -EINVAL; + } +} + struct spu_context_ops spu_hw_ops = { .mbox_read = spu_hw_mbox_read, .mbox_stat_read = spu_hw_mbox_stat_read, @@ -252,4 +305,8 @@ struct spu_context_ops spu_hw_ops = { .get_ls = spu_hw_get_ls, .runcntl_write = spu_hw_runcntl_write, .runcntl_stop = spu_hw_runcntl_stop, + .set_mfc_query = spu_hw_set_mfc_query, + .read_mfc_tagstatus = spu_hw_read_mfc_tagstatus, + .get_mfc_free_elements = spu_hw_get_mfc_free_elements, + .send_mfc_command = spu_hw_send_mfc_command, }; diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c index b3962c3a..d955419 100644 --- a/arch/powerpc/platforms/cell/spufs/inode.c +++ b/arch/powerpc/platforms/cell/spufs/inode.c @@ -103,7 +103,7 @@ spufs_setattr(struct dentry *dentry, struct iattr *attr) static int spufs_new_file(struct super_block *sb, struct dentry *dentry, - struct file_operations *fops, int mode, + const struct file_operations *fops, int mode, struct spu_context *ctx) { static struct inode_operations spufs_file_iops = { @@ -241,7 +241,7 @@ spufs_mkdir(struct inode *dir, struct dentry *dentry, int mode) inode->i_gid = dir->i_gid; inode->i_mode &= S_ISGID; } - ctx = alloc_spu_context(inode->i_mapping); + ctx = alloc_spu_context(); SPUFS_I(inode)->i_ctx = ctx; if (!ctx) goto out_iput; @@ -442,7 +442,7 @@ static struct file_system_type spufs_type = { .kill_sb = kill_litter_super, }; -static int spufs_init(void) +static int __init spufs_init(void) { int ret; ret = -ENOMEM; @@ -472,7 +472,7 @@ out: } module_init(spufs_init); -static void spufs_exit(void) +static void __exit spufs_exit(void) { spu_sched_exit(); unregister_spu_syscalls(&spufs_calls); diff --git a/arch/powerpc/platforms/cell/spufs/run.c b/arch/powerpc/platforms/cell/spufs/run.c index 18ea886..c04e078 100644 --- a/arch/powerpc/platforms/cell/spufs/run.c +++ b/arch/powerpc/platforms/cell/spufs/run.c @@ -76,6 +76,90 @@ static inline int spu_reacquire_runnable(struct spu_context *ctx, u32 *npc, return 0; } +/* + * SPU syscall restarting is tricky because we violate the basic + * assumption that the signal handler is running on the interrupted + * thread. Here instead, the handler runs on PowerPC user space code, + * while the syscall was called from the SPU. + * This means we can only do a very rough approximation of POSIX + * signal semantics. + */ +int spu_handle_restartsys(struct spu_context *ctx, long *spu_ret, + unsigned int *npc) +{ + int ret; + + switch (*spu_ret) { + case -ERESTARTSYS: + case -ERESTARTNOINTR: + /* + * Enter the regular syscall restarting for + * sys_spu_run, then restart the SPU syscall + * callback. + */ + *npc -= 8; + ret = -ERESTARTSYS; + break; + case -ERESTARTNOHAND: + case -ERESTART_RESTARTBLOCK: + /* + * Restart block is too hard for now, just return -EINTR + * to the SPU. + * ERESTARTNOHAND comes from sys_pause, we also return + * -EINTR from there. + * Assume that we need to be restarted ourselves though. + */ + *spu_ret = -EINTR; + ret = -ERESTARTSYS; + break; + default: + printk(KERN_WARNING "%s: unexpected return code %ld\n", + __FUNCTION__, *spu_ret); + ret = 0; + } + return ret; +} + +int spu_process_callback(struct spu_context *ctx) +{ + struct spu_syscall_block s; + u32 ls_pointer, npc; + char *ls; + long spu_ret; + int ret; + + /* get syscall block from local store */ + npc = ctx->ops->npc_read(ctx); + ls = ctx->ops->get_ls(ctx); + ls_pointer = *(u32*)(ls + npc); + if (ls_pointer > (LS_SIZE - sizeof(s))) + return -EFAULT; + memcpy(&s, ls + ls_pointer, sizeof (s)); + + /* do actual syscall without pinning the spu */ + ret = 0; + spu_ret = -ENOSYS; + npc += 4; + + if (s.nr_ret < __NR_syscalls) { + spu_release(ctx); + /* do actual system call from here */ + spu_ret = spu_sys_callback(&s); + if (spu_ret <= -ERESTARTSYS) { + ret = spu_handle_restartsys(ctx, &spu_ret, &npc); + } + spu_acquire(ctx); + if (ret == -ERESTARTSYS) + return ret; + } + + /* write result, jump over indirect pointer */ + memcpy(ls + ls_pointer, &spu_ret, sizeof (spu_ret)); + ctx->ops->npc_write(ctx, npc); + ctx->ops->runcntl_write(ctx, SPU_RUNCNTL_RUNNABLE); + return ret; +} + static inline int spu_process_events(struct spu_context *ctx) { struct spu *spu = ctx->spu; @@ -107,6 +191,13 @@ long spufs_run_spu(struct file *file, struct spu_context *ctx, ret = spufs_wait(ctx->stop_wq, spu_stopped(ctx, status)); if (unlikely(ret)) break; + if ((*status & SPU_STATUS_STOPPED_BY_STOP) && + (*status >> SPU_STOP_STATUS_SHIFT == 0x2104)) { + ret = spu_process_callback(ctx); + if (ret) + break; + *status &= ~SPU_STATUS_STOPPED_BY_STOP; + } if (unlikely(ctx->state != SPU_STATE_RUNNABLE)) { ret = spu_reacquire_runnable(ctx, npc, status); if (ret) diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c index 963182f..bf652cd 100644 --- a/arch/powerpc/platforms/cell/spufs/sched.c +++ b/arch/powerpc/platforms/cell/spufs/sched.c @@ -180,6 +180,7 @@ static inline void bind_context(struct spu *spu, struct spu_context *ctx) spu->ibox_callback = spufs_ibox_callback; spu->wbox_callback = spufs_wbox_callback; spu->stop_callback = spufs_stop_callback; + spu->mfc_callback = spufs_mfc_callback; mb(); spu_unmap_mappings(ctx); spu_restore(&ctx->csa, spu); @@ -197,6 +198,7 @@ static inline void unbind_context(struct spu *spu, struct spu_context *ctx) spu->ibox_callback = NULL; spu->wbox_callback = NULL; spu->stop_callback = NULL; + spu->mfc_callback = NULL; spu->mm = NULL; spu->pid = 0; spu->prio = MAX_PRIO; diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h index db2601f..4485738 100644 --- a/arch/powerpc/platforms/cell/spufs/spufs.h +++ b/arch/powerpc/platforms/cell/spufs/spufs.h @@ -43,7 +43,11 @@ struct spu_context { struct spu *spu; /* pointer to a physical SPU */ struct spu_state csa; /* SPU context save area. */ spinlock_t mmio_lock; /* protects mmio access */ - struct address_space *local_store;/* local store backing store */ + struct address_space *local_store; /* local store mapping. */ + struct address_space *mfc; /* 'mfc' area mappings. */ + struct address_space *cntl; /* 'control' area mappings. */ + struct address_space *signal1; /* 'signal1' area mappings. */ + struct address_space *signal2; /* 'signal2' area mappings. */ enum { SPU_STATE_RUNNABLE, SPU_STATE_SAVED } state; struct rw_semaphore state_sema; @@ -55,13 +59,27 @@ struct spu_context { wait_queue_head_t ibox_wq; wait_queue_head_t wbox_wq; wait_queue_head_t stop_wq; + wait_queue_head_t mfc_wq; struct fasync_struct *ibox_fasync; struct fasync_struct *wbox_fasync; + struct fasync_struct *mfc_fasync; + u32 tagwait; struct spu_context_ops *ops; struct work_struct reap_work; u64 flags; }; +struct mfc_dma_command { + int32_t pad; /* reserved */ + uint32_t lsa; /* local storage address */ + uint64_t ea; /* effective address */ + uint16_t size; /* transfer size */ + uint16_t tag; /* command tag */ + uint16_t class; /* class ID */ + uint16_t cmd; /* command opcode */ +}; + + /* SPU context query/set operations. */ struct spu_context_ops { int (*mbox_read) (struct spu_context * ctx, u32 * data); @@ -84,6 +102,11 @@ struct spu_context_ops { char*(*get_ls) (struct spu_context * ctx); void (*runcntl_write) (struct spu_context * ctx, u32 data); void (*runcntl_stop) (struct spu_context * ctx); + int (*set_mfc_query)(struct spu_context * ctx, u32 mask, u32 mode); + u32 (*read_mfc_tagstatus)(struct spu_context * ctx); + u32 (*get_mfc_free_elements)(struct spu_context *ctx); + int (*send_mfc_command)(struct spu_context *ctx, + struct mfc_dma_command *cmd); }; extern struct spu_context_ops spu_hw_ops; @@ -106,7 +129,7 @@ long spufs_create_thread(struct nameidata *nd, extern struct file_operations spufs_context_fops; /* context management */ -struct spu_context * alloc_spu_context(struct address_space *local_store); +struct spu_context * alloc_spu_context(void); void destroy_spu_context(struct kref *kref); struct spu_context * get_spu_context(struct spu_context *ctx); int put_spu_context(struct spu_context *ctx); @@ -159,5 +182,6 @@ size_t spu_ibox_read(struct spu_context *ctx, u32 *data); void spufs_ibox_callback(struct spu *spu); void spufs_wbox_callback(struct spu *spu); void spufs_stop_callback(struct spu *spu); +void spufs_mfc_callback(struct spu *spu); #endif diff --git a/arch/powerpc/platforms/cell/spufs/switch.c b/arch/powerpc/platforms/cell/spufs/switch.c index 212db28..97898d5 100644 --- a/arch/powerpc/platforms/cell/spufs/switch.c +++ b/arch/powerpc/platforms/cell/spufs/switch.c @@ -2145,7 +2145,8 @@ static void init_priv1(struct spu_state *csa) csa->priv1.int_mask_class1_RW = CLASS1_ENABLE_SEGMENT_FAULT_INTR | CLASS1_ENABLE_STORAGE_FAULT_INTR; csa->priv1.int_mask_class2_RW = CLASS2_ENABLE_SPU_STOP_INTR | - CLASS2_ENABLE_SPU_HALT_INTR; + CLASS2_ENABLE_SPU_HALT_INTR | + CLASS2_ENABLE_SPU_DMA_TAG_GROUP_COMPLETE_INTR; } static void init_priv2(struct spu_state *csa) diff --git a/arch/powerpc/platforms/chrp/chrp.h b/arch/powerpc/platforms/chrp/chrp.h index 814f547..63f0aee 100644 --- a/arch/powerpc/platforms/chrp/chrp.h +++ b/arch/powerpc/platforms/chrp/chrp.h @@ -8,4 +8,4 @@ extern int chrp_set_rtc_time(struct rtc_time *); extern long chrp_time_init(void); extern void chrp_find_bridges(void); -extern void chrp_event_scan(void); +extern void chrp_event_scan(unsigned long); diff --git a/arch/powerpc/platforms/chrp/pegasos_eth.c b/arch/powerpc/platforms/chrp/pegasos_eth.c index 29c8678..6ad4b1a 100644 --- a/arch/powerpc/platforms/chrp/pegasos_eth.c +++ b/arch/powerpc/platforms/chrp/pegasos_eth.c @@ -1,6 +1,4 @@ /* - * arch/ppc/platforms/chrp_pegasos_eth.c - * * Copyright (C) 2005 Sven Luther <sl@bplan-gmbh.de> * Thanks to : * Dale Farnsworth <dale@farnsworth.org> diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c index e1fadbf..23a2017 100644 --- a/arch/powerpc/platforms/chrp/setup.c +++ b/arch/powerpc/platforms/chrp/setup.c @@ -1,6 +1,4 @@ /* - * arch/ppc/platforms/setup.c - * * Copyright (C) 1995 Linus Torvalds * Adapted from 'alpha' version by Gary Thomas * Modified by Cort Dougan (cort@cs.nmt.edu) @@ -37,6 +35,7 @@ #include <linux/root_dev.h> #include <linux/initrd.h> #include <linux/module.h> +#include <linux/timer.h> #include <asm/io.h> #include <asm/pgtable.h> @@ -63,6 +62,10 @@ EXPORT_SYMBOL(_chrp_type); struct mpic *chrp_mpic; +/* Used for doing CHRP event-scans */ +DEFINE_PER_CPU(struct timer_list, heartbeat_timer); +unsigned long event_scan_interval; + /* * XXX this should be in xmon.h, but putting it there means xmon.h * has to include <linux/interrupt.h> (to get irqreturn_t), which @@ -231,8 +234,6 @@ void __init chrp_setup_arch(void) { struct device_node *root = find_path_device ("/"); char *machine = NULL; - struct device_node *device; - unsigned int *p = NULL; /* init to some ~sane value until calibrate_delay() runs */ loops_per_jiffy = 50000000/HZ; @@ -289,23 +290,12 @@ void __init chrp_setup_arch(void) */ sio_init(); - /* Get the event scan rate for the rtas so we know how - * often it expects a heartbeat. -- Cort - */ - device = find_devices("rtas"); - if (device) - p = (unsigned int *) get_property - (device, "rtas-event-scan-rate", NULL); - if (p && *p) { - ppc_md.heartbeat = chrp_event_scan; - ppc_md.heartbeat_reset = HZ / (*p * 30) - 1; - ppc_md.heartbeat_count = 1; - printk("RTAS Event Scan Rate: %u (%lu jiffies)\n", - *p, ppc_md.heartbeat_reset); - } - pci_create_OF_bus_map(); +#ifdef CONFIG_SMP + smp_ops = &chrp_smp_ops; +#endif /* CONFIG_SMP */ + /* * Print the banner, then scroll down so boot progress * can be printed. -- Cort @@ -314,7 +304,7 @@ void __init chrp_setup_arch(void) } void -chrp_event_scan(void) +chrp_event_scan(unsigned long unused) { unsigned char log[1024]; int ret = 0; @@ -322,7 +312,8 @@ chrp_event_scan(void) /* XXX: we should loop until the hardware says no more error logs -- Cort */ rtas_call(rtas_token("event-scan"), 4, 1, &ret, 0xffffffff, 0, __pa(log), 1024); - ppc_md.heartbeat_count = ppc_md.heartbeat_reset; + mod_timer(&__get_cpu_var(heartbeat_timer), + jiffies + event_scan_interval); } /* @@ -467,6 +458,9 @@ void __init chrp_init_IRQ(void) void __init chrp_init2(void) { + struct device_node *device; + unsigned int *p = NULL; + #ifdef CONFIG_NVRAM chrp_nvram_init(); #endif @@ -478,12 +472,53 @@ chrp_init2(void) request_region(0x80,0x10,"dma page reg"); request_region(0xc0,0x20,"dma2"); + /* Get the event scan rate for the rtas so we know how + * often it expects a heartbeat. -- Cort + */ + device = find_devices("rtas"); + if (device) + p = (unsigned int *) get_property + (device, "rtas-event-scan-rate", NULL); + if (p && *p) { + /* + * Arrange to call chrp_event_scan at least *p times + * per minute. We use 59 rather than 60 here so that + * the rate will be slightly higher than the minimum. + * This all assumes we don't do hotplug CPU on any + * machine that needs the event scans done. + */ + unsigned long interval, offset; + int cpu, ncpus; + struct timer_list *timer; + + interval = HZ * 59 / *p; + offset = HZ; + ncpus = num_online_cpus(); + event_scan_interval = ncpus * interval; + for (cpu = 0; cpu < ncpus; ++cpu) { + timer = &per_cpu(heartbeat_timer, cpu); + setup_timer(timer, chrp_event_scan, 0); + timer->expires = jiffies + offset; + add_timer_on(timer, cpu); + offset += interval; + } + printk("RTAS Event Scan Rate: %u (%lu jiffies)\n", + *p, interval); + } + if (ppc_md.progress) ppc_md.progress(" Have fun! ", 0x7777); } -void __init chrp_init(void) +static int __init chrp_probe(void) { + char *dtype = of_get_flat_dt_prop(of_get_flat_dt_root(), + "device_type", NULL); + if (dtype == NULL) + return 0; + if (strcmp(dtype, "chrp")) + return 0; + ISA_DMA_THRESHOLD = ~0L; DMA_MODE_READ = 0x44; DMA_MODE_WRITE = 0x48; diff --git a/arch/powerpc/platforms/chrp/time.c b/arch/powerpc/platforms/chrp/time.c index 78df2e7..7d78890 100644 --- a/arch/powerpc/platforms/chrp/time.c +++ b/arch/powerpc/platforms/chrp/time.c @@ -1,6 +1,4 @@ /* - * arch/ppc/platforms/chrp_time.c - * * Copyright (C) 1991, 1992, 1995 Linus Torvalds * * Adapted for PowerPC (PReP) by Gary Thomas @@ -122,33 +120,15 @@ int chrp_set_rtc_time(struct rtc_time *tmarg) void chrp_get_rtc_time(struct rtc_time *tm) { unsigned int year, mon, day, hour, min, sec; - int uip, i; - - /* The Linux interpretation of the CMOS clock register contents: - * When the Update-In-Progress (UIP) flag goes from 1 to 0, the - * RTC registers show the second which has precisely just started. - * Let's hope other operating systems interpret the RTC the same way. - */ - /* Since the UIP flag is set for about 2.2 ms and the clock - * is typically written with a precision of 1 jiffy, trying - * to obtain a precision better than a few milliseconds is - * an illusion. Only consistency is interesting, this also - * allows to use the routine for /dev/rtc without a potential - * 1 second kernel busy loop triggered by any reader of /dev/rtc. - */ - - for ( i = 0; i<1000000; i++) { - uip = chrp_cmos_clock_read(RTC_FREQ_SELECT); + do { sec = chrp_cmos_clock_read(RTC_SECONDS); min = chrp_cmos_clock_read(RTC_MINUTES); hour = chrp_cmos_clock_read(RTC_HOURS); day = chrp_cmos_clock_read(RTC_DAY_OF_MONTH); mon = chrp_cmos_clock_read(RTC_MONTH); year = chrp_cmos_clock_read(RTC_YEAR); - uip |= chrp_cmos_clock_read(RTC_FREQ_SELECT); - if ((uip & RTC_UIP)==0) break; - } + } while (sec != chrp_cmos_clock_read(RTC_SECONDS)); if (!(chrp_cmos_clock_read(RTC_CONTROL) & RTC_DM_BINARY) || RTC_ALWAYS_BCD) { BCD_TO_BIN(sec); diff --git a/arch/powerpc/platforms/iseries/mf.c b/arch/powerpc/platforms/iseries/mf.c index a41d8b7..d771b8e 100644 --- a/arch/powerpc/platforms/iseries/mf.c +++ b/arch/powerpc/platforms/iseries/mf.c @@ -46,6 +46,7 @@ #include "setup.h" extern int piranha_simulator; +static int mf_initialized; /* * This is the structure layout for the Machine Facilites LPAR event @@ -143,7 +144,8 @@ static spinlock_t pending_event_spinlock; static struct pending_event *pending_event_head; static struct pending_event *pending_event_tail; static struct pending_event *pending_event_avail; -static struct pending_event pending_event_prealloc[16]; +#define PENDING_EVENT_PREALLOC_LEN 16 +static struct pending_event pending_event_prealloc[PENDING_EVENT_PREALLOC_LEN]; /* * Put a pending event onto the available queue, so it can get reused. @@ -597,7 +599,7 @@ void mf_power_off(void) * Global kernel interface to tell the VSP object in the primary * partition to reboot this partition. */ -void mf_reboot(void) +void mf_reboot(char *cmd) { printk(KERN_INFO "mf.c: Preparing to bounce...\n"); signal_ce_msg_simple(0x4e, NULL); @@ -625,7 +627,7 @@ void mf_display_src(u32 word) /* * Display a single word SRC of the form "PROGXXXX" on the VSP control panel. */ -void mf_display_progress(u16 value) +static __init void mf_display_progress_src(u16 value) { u8 ce[12]; u8 src[72]; @@ -649,30 +651,42 @@ void mf_display_progress(u16 value) * Clear the VSP control panel. Used to "erase" an SRC that was * previously displayed. */ -void mf_clear_src(void) +static void mf_clear_src(void) { signal_ce_msg_simple(0x4b, NULL); } +void __init mf_display_progress(u16 value) +{ + if (piranha_simulator || !mf_initialized) + return; + + if (0xFFFF == value) + mf_clear_src(); + else + mf_display_progress_src(value); +} + /* * Initialization code here. */ -void mf_init(void) +void __init mf_init(void) { int i; - /* initialize */ spin_lock_init(&pending_event_spinlock); - for (i = 0; - i < sizeof(pending_event_prealloc) / sizeof(*pending_event_prealloc); - ++i) + + for (i = 0; i < PENDING_EVENT_PREALLOC_LEN; i++) free_pending_event(&pending_event_prealloc[i]); + HvLpEvent_registerHandler(HvLpEvent_Type_MachineFac, &hv_handler); /* virtual continue ack */ signal_ce_msg_simple(0x57, NULL); - /* initialization complete */ + mf_initialized = 1; + mb(); + printk(KERN_NOTICE "mf.c: iSeries Linux LPAR Machine Facilities " "initialized\n"); } @@ -692,6 +706,43 @@ static void get_rtc_time_complete(void *token, struct ce_msg_data *ce_msg) complete(&rtc->com); } +static int mf_set_rtc(struct rtc_time *tm) +{ + char ce_time[12]; + u8 day, mon, hour, min, sec, y1, y2; + unsigned year; + + year = 1900 + tm->tm_year; + y1 = year / 100; + y2 = year % 100; + + sec = tm->tm_sec; + min = tm->tm_min; + hour = tm->tm_hour; + day = tm->tm_mday; + mon = tm->tm_mon + 1; + + BIN_TO_BCD(sec); + BIN_TO_BCD(min); + BIN_TO_BCD(hour); + BIN_TO_BCD(mon); + BIN_TO_BCD(day); + BIN_TO_BCD(y1); + BIN_TO_BCD(y2); + + memset(ce_time, 0, sizeof(ce_time)); + ce_time[3] = 0x41; + ce_time[4] = y1; + ce_time[5] = y2; + ce_time[6] = sec; + ce_time[7] = min; + ce_time[8] = hour; + ce_time[10] = day; + ce_time[11] = mon; + + return signal_ce_msg(ce_time, NULL); +} + static int rtc_set_tm(int rc, u8 *ce_msg, struct rtc_time *tm) { tm->tm_wday = 0; @@ -747,7 +798,7 @@ static int rtc_set_tm(int rc, u8 *ce_msg, struct rtc_time *tm) return 0; } -int mf_get_rtc(struct rtc_time *tm) +static int mf_get_rtc(struct rtc_time *tm) { struct ce_msg_comp_data ce_complete; struct rtc_time_data rtc_data; @@ -780,7 +831,7 @@ static void get_boot_rtc_time_complete(void *token, struct ce_msg_data *ce_msg) rtc->busy = 0; } -int mf_get_boot_rtc(struct rtc_time *tm) +static int mf_get_boot_rtc(struct rtc_time *tm) { struct ce_msg_comp_data ce_complete; struct boot_rtc_time_data rtc_data; @@ -802,43 +853,6 @@ int mf_get_boot_rtc(struct rtc_time *tm) return rtc_set_tm(rtc_data.rc, rtc_data.ce_msg.ce_msg, tm); } -int mf_set_rtc(struct rtc_time *tm) -{ - char ce_time[12]; - u8 day, mon, hour, min, sec, y1, y2; - unsigned year; - - year = 1900 + tm->tm_year; - y1 = year / 100; - y2 = year % 100; - - sec = tm->tm_sec; - min = tm->tm_min; - hour = tm->tm_hour; - day = tm->tm_mday; - mon = tm->tm_mon + 1; - - BIN_TO_BCD(sec); - BIN_TO_BCD(min); - BIN_TO_BCD(hour); - BIN_TO_BCD(mon); - BIN_TO_BCD(day); - BIN_TO_BCD(y1); - BIN_TO_BCD(y2); - - memset(ce_time, 0, sizeof(ce_time)); - ce_time[3] = 0x41; - ce_time[4] = y1; - ce_time[5] = y2; - ce_time[6] = sec; - ce_time[7] = min; - ce_time[8] = hour; - ce_time[10] = day; - ce_time[11] = mon; - - return signal_ce_msg(ce_time, NULL); -} - #ifdef CONFIG_PROC_FS static int proc_mf_dump_cmdline(char *page, char **start, off_t off, diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c index 3ecc4a6..6ce8a40 100644 --- a/arch/powerpc/platforms/iseries/setup.c +++ b/arch/powerpc/platforms/iseries/setup.c @@ -50,6 +50,7 @@ #include <asm/iseries/hv_call_xm.h> #include <asm/iseries/it_lp_queue.h> #include <asm/iseries/mf.h> +#include <asm/iseries/it_exp_vpd_panel.h> #include <asm/iseries/hv_lp_event.h> #include <asm/iseries/lpar_map.h> #include <asm/udbg.h> @@ -89,8 +90,6 @@ extern unsigned long embedded_sysmap_end; extern unsigned long iSeries_recal_tb; extern unsigned long iSeries_recal_titan; -static int mf_initialized; - static unsigned long cmd_mem_limit; struct MemoryBlock { @@ -303,8 +302,6 @@ static void __init iSeries_init_early(void) { DBG(" -> iSeries_init_early()\n"); - ppc64_firmware_features = FW_FEATURE_ISERIES; - ppc64_interrupt_controller = IC_ISERIES; #if defined(CONFIG_BLK_DEV_INITRD) @@ -349,8 +346,6 @@ static void __init iSeries_init_early(void) HvCallEvent_setLpEventQueueInterruptProc(0, 0); mf_init(); - mf_initialized = 1; - mb(); /* If we were passed an initrd, set the ROOT_DEV properly if the values * look sensible. If not, clear initrd reference. @@ -560,39 +555,10 @@ static void iSeries_show_cpuinfo(struct seq_file *m) seq_printf(m, "machine\t\t: 64-bit iSeries Logical Partition\n"); } -/* - * Document me. - */ -static void iSeries_restart(char *cmd) -{ - mf_reboot(); -} - -/* - * Document me. - */ -static void iSeries_power_off(void) -{ - mf_power_off(); -} - -/* - * Document me. - */ -static void iSeries_halt(void) -{ - mf_power_off(); -} - static void __init iSeries_progress(char * st, unsigned short code) { printk("Progress: [%04x] - %s\n", (unsigned)code, st); - if (!piranha_simulator && mf_initialized) { - if (code != 0xffff) - mf_display_progress(code); - else - mf_clear_src(); - } + mf_display_progress(code); } static void __init iSeries_fixup_klimit(void) @@ -709,21 +675,29 @@ static void iseries_dedicated_idle(void) void __init iSeries_init_IRQ(void) { } #endif -static int __init iseries_probe(int platform) +static int __init iseries_probe(void) { - return PLATFORM_ISERIES_LPAR == platform; + unsigned long root = of_get_flat_dt_root(); + if (!of_flat_dt_is_compatible(root, "IBM,iSeries")) + return 0; + + powerpc_firmware_features |= FW_FEATURE_ISERIES; + powerpc_firmware_features |= FW_FEATURE_LPAR; + + return 1; } -struct machdep_calls __initdata iseries_md = { +define_machine(iseries) { + .name = "iSeries", .setup_arch = iSeries_setup_arch, .show_cpuinfo = iSeries_show_cpuinfo, .init_IRQ = iSeries_init_IRQ, .get_irq = iSeries_get_irq, .init_early = iSeries_init_early, .pcibios_fixup = iSeries_pci_final_fixup, - .restart = iSeries_restart, - .power_off = iSeries_power_off, - .halt = iSeries_halt, + .restart = mf_reboot, + .power_off = mf_power_off, + .halt = mf_power_off, .get_boot_time = iSeries_get_boot_time, .set_rtc_time = iSeries_set_rtc_time, .get_rtc_time = iSeries_get_rtc_time, @@ -917,6 +891,24 @@ void dt_cpus(struct iseries_flat_dt *dt) dt_end_node(dt); } +void dt_model(struct iseries_flat_dt *dt) +{ + char buf[16] = "IBM,"; + + /* "IBM," + mfgId[2:3] + systemSerial[1:5] */ + strne2a(buf + 4, xItExtVpdPanel.mfgID + 2, 2); + strne2a(buf + 6, xItExtVpdPanel.systemSerial + 1, 5); + buf[11] = '\0'; + dt_prop_str(dt, "system-id", buf); + + /* "IBM," + machineType[0:4] */ + strne2a(buf + 4, xItExtVpdPanel.machineType, 4); + buf[8] = '\0'; + dt_prop_str(dt, "model", buf); + + dt_prop_str(dt, "compatible", "IBM,iSeries"); +} + void build_flat_dt(struct iseries_flat_dt *dt, unsigned long phys_mem_size) { u64 tmp[2]; @@ -927,6 +919,7 @@ void build_flat_dt(struct iseries_flat_dt *dt, unsigned long phys_mem_size) dt_prop_u32(dt, "#address-cells", 2); dt_prop_u32(dt, "#size-cells", 2); + dt_model(dt); /* /memory */ dt_start_node(dt, "memory@0"); @@ -939,7 +932,7 @@ void build_flat_dt(struct iseries_flat_dt *dt, unsigned long phys_mem_size) /* /chosen */ dt_start_node(dt, "chosen"); - dt_prop_u32(dt, "linux,platform", PLATFORM_ISERIES_LPAR); + dt_prop_str(dt, "bootargs", cmd_line); if (cmd_mem_limit) dt_prop_u64(dt, "linux,memory-limit", cmd_mem_limit); dt_end_node(dt); diff --git a/arch/powerpc/platforms/maple/setup.c b/arch/powerpc/platforms/maple/setup.c index ec5c1e1..24c0aef4 100644 --- a/arch/powerpc/platforms/maple/setup.c +++ b/arch/powerpc/platforms/maple/setup.c @@ -259,9 +259,10 @@ static void __init maple_progress(char *s, unsigned short hex) /* * Called very early, MMU is off, device-tree isn't unflattened */ -static int __init maple_probe(int platform) +static int __init maple_probe(void) { - if (platform != PLATFORM_MAPLE) + unsigned long root = of_get_flat_dt_root(); + if (!of_flat_dt_is_compatible(root, "Momentum,Maple")) return 0; /* * On U3, the DART (iommu) must be allocated now since it @@ -274,7 +275,8 @@ static int __init maple_probe(int platform) return 1; } -struct machdep_calls __initdata maple_md = { +define_machine(maple_md) { + .name = "Maple", .probe = maple_probe, .setup_arch = maple_setup_arch, .init_early = maple_init_early, @@ -290,7 +292,7 @@ struct machdep_calls __initdata maple_md = { .get_rtc_time = maple_get_rtc_time, .calibrate_decr = generic_calibrate_decr, .progress = maple_progress, - .idle_loop = native_idle, + .power_save = power4_idle, #ifdef CONFIG_KEXEC .machine_kexec = default_machine_kexec, .machine_kexec_prepare = default_machine_kexec_prepare, diff --git a/arch/powerpc/platforms/maple/time.c b/arch/powerpc/platforms/maple/time.c index 50bc4eb..b9a2b3d 100644 --- a/arch/powerpc/platforms/maple/time.c +++ b/arch/powerpc/platforms/maple/time.c @@ -1,6 +1,4 @@ /* - * arch/ppc64/kernel/maple_time.c - * * (c) Copyright 2004 Benjamin Herrenschmidt (benh@kernel.crashing.org), * IBM Corp. * @@ -62,34 +60,14 @@ static void maple_clock_write(unsigned long val, int addr) void maple_get_rtc_time(struct rtc_time *tm) { - int uip, i; - - /* The Linux interpretation of the CMOS clock register contents: - * When the Update-In-Progress (UIP) flag goes from 1 to 0, the - * RTC registers show the second which has precisely just started. - * Let's hope other operating systems interpret the RTC the same way. - */ - - /* Since the UIP flag is set for about 2.2 ms and the clock - * is typically written with a precision of 1 jiffy, trying - * to obtain a precision better than a few milliseconds is - * an illusion. Only consistency is interesting, this also - * allows to use the routine for /dev/rtc without a potential - * 1 second kernel busy loop triggered by any reader of /dev/rtc. - */ - - for (i = 0; i<1000000; i++) { - uip = maple_clock_read(RTC_FREQ_SELECT); + do { tm->tm_sec = maple_clock_read(RTC_SECONDS); tm->tm_min = maple_clock_read(RTC_MINUTES); tm->tm_hour = maple_clock_read(RTC_HOURS); tm->tm_mday = maple_clock_read(RTC_DAY_OF_MONTH); tm->tm_mon = maple_clock_read(RTC_MONTH); tm->tm_year = maple_clock_read(RTC_YEAR); - uip |= maple_clock_read(RTC_FREQ_SELECT); - if ((uip & RTC_UIP)==0) - break; - } + } while (tm->tm_sec != maple_clock_read(RTC_SECONDS)); if (!(maple_clock_read(RTC_CONTROL) & RTC_DM_BINARY) || RTC_ALWAYS_BCD) { diff --git a/arch/powerpc/platforms/powermac/bootx_init.c b/arch/powerpc/platforms/powermac/bootx_init.c index fa8b4d7..eacbfd9 100644 --- a/arch/powerpc/platforms/powermac/bootx_init.c +++ b/arch/powerpc/platforms/powermac/bootx_init.c @@ -161,9 +161,7 @@ static void __init bootx_dt_add_prop(char *name, void *data, int size, static void __init bootx_add_chosen_props(unsigned long base, unsigned long *mem_end) { - u32 val = _MACH_Pmac; - - bootx_dt_add_prop("linux,platform", &val, 4, mem_end); + u32 val; if (bootx_info->kernelParamsOffset) { char *args = (char *)((unsigned long)bootx_info) + @@ -493,7 +491,7 @@ void __init bootx_init(unsigned long r3, unsigned long r4) && (strcmp(model, "iMac,1") == 0 || strcmp(model, "PowerMac1,1") == 0)) { bootx_printf("iMac,1 detected, shutting down USB \n"); - out_le32((unsigned *)0x80880008, 1); /* XXX */ + out_le32((unsigned __iomem *)0x80880008, 1); /* XXX */ } } diff --git a/arch/powerpc/platforms/powermac/cpufreq_32.c b/arch/powerpc/platforms/powermac/cpufreq_32.c index 56fd4e0..cfd6527 100644 --- a/arch/powerpc/platforms/powermac/cpufreq_32.c +++ b/arch/powerpc/platforms/powermac/cpufreq_32.c @@ -1,6 +1,4 @@ /* - * arch/ppc/platforms/pmac_cpufreq.c - * * Copyright (C) 2002 - 2005 Benjamin Herrenschmidt <benh@kernel.crashing.org> * Copyright (C) 2004 John Steele Scott <toojays@toojays.net> * diff --git a/arch/powerpc/platforms/powermac/cpufreq_64.c b/arch/powerpc/platforms/powermac/cpufreq_64.c index a415e8d..b57e465 100644 --- a/arch/powerpc/platforms/powermac/cpufreq_64.c +++ b/arch/powerpc/platforms/powermac/cpufreq_64.c @@ -21,6 +21,7 @@ #include <linux/cpufreq.h> #include <linux/init.h> #include <linux/completion.h> +#include <linux/mutex.h> #include <asm/prom.h> #include <asm/machdep.h> #include <asm/irq.h> @@ -90,7 +91,7 @@ static void (*g5_switch_volt)(int speed_mode); static int (*g5_switch_freq)(int speed_mode); static int (*g5_query_freq)(void); -static DECLARE_MUTEX(g5_switch_mutex); +static DEFINE_MUTEX(g5_switch_mutex); static struct smu_sdbp_fvt *g5_fvt_table; /* table of op. points */ @@ -327,7 +328,7 @@ static int g5_cpufreq_target(struct cpufreq_policy *policy, if (g5_pmode_cur == newstate) return 0; - down(&g5_switch_mutex); + mutex_lock(&g5_switch_mutex); freqs.old = g5_cpu_freqs[g5_pmode_cur].frequency; freqs.new = g5_cpu_freqs[newstate].frequency; @@ -337,7 +338,7 @@ static int g5_cpufreq_target(struct cpufreq_policy *policy, rc = g5_switch_freq(newstate); cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); - up(&g5_switch_mutex); + mutex_unlock(&g5_switch_mutex); return rc; } diff --git a/arch/powerpc/platforms/powermac/feature.c b/arch/powerpc/platforms/powermac/feature.c index 34714d3..a5063cd 100644 --- a/arch/powerpc/platforms/powermac/feature.c +++ b/arch/powerpc/platforms/powermac/feature.c @@ -1,6 +1,4 @@ /* - * arch/ppc/platforms/pmac_feature.c - * * Copyright (C) 1996-2001 Paul Mackerras (paulus@cs.anu.edu.au) * Ben. Herrenschmidt (benh@kernel.crashing.org) * @@ -2491,9 +2489,7 @@ found: pmac_mb.model_id = PMAC_TYPE_COMET; iounmap(mach_id_ptr); } -#endif /* CONFIG_POWER4 */ -#ifdef CONFIG_6xx /* Set default value of powersave_nap on machines that support it. * It appears that uninorth rev 3 has a problem with it, we don't * enable it on those. In theory, the flush-on-lock property is @@ -2522,10 +2518,11 @@ found: * NAP mode */ powersave_lowspeed = 1; -#endif /* CONFIG_6xx */ -#ifdef CONFIG_POWER4 + +#else /* CONFIG_POWER4 */ powersave_nap = 1; -#endif +#endif /* CONFIG_POWER4 */ + /* Check for "mobile" machine */ if (model && (strncmp(model, "PowerBook", 9) == 0 || strncmp(model, "iBook", 5) == 0)) @@ -2954,7 +2951,7 @@ static void *pmac_early_vresume_data; void pmac_set_early_video_resume(void (*proc)(void *data), void *data) { - if (_machine != _MACH_Pmac) + if (!machine_is(powermac)) return; preempt_disable(); pmac_early_vresume_proc = proc; diff --git a/arch/powerpc/platforms/powermac/low_i2c.c b/arch/powerpc/platforms/powermac/low_i2c.c index 87eb6bb..e14f9ac 100644 --- a/arch/powerpc/platforms/powermac/low_i2c.c +++ b/arch/powerpc/platforms/powermac/low_i2c.c @@ -1457,6 +1457,9 @@ int __init pmac_i2c_init(void) return 0; i2c_inited = 1; + if (!machine_is(powermac)) + return 0; + /* Probe keywest-i2c busses */ kw_i2c_probe(); diff --git a/arch/powerpc/platforms/powermac/nvram.c b/arch/powerpc/platforms/powermac/nvram.c index 3ebd045..262f967 100644 --- a/arch/powerpc/platforms/powermac/nvram.c +++ b/arch/powerpc/platforms/powermac/nvram.c @@ -1,6 +1,4 @@ /* - * arch/ppc/platforms/pmac_nvram.c - * * Copyright (C) 2002 Benjamin Herrenschmidt (benh@kernel.crashing.org) * * This program is free software; you can redistribute it and/or @@ -76,7 +74,7 @@ struct core99_header { * Read and write the non-volatile RAM on PowerMacs and CHRP machines. */ static int nvram_naddrs; -static volatile unsigned char *nvram_data; +static volatile unsigned char __iomem *nvram_data; static int is_core_99; static int core99_bank = 0; static int nvram_partitions[3]; @@ -150,7 +148,7 @@ static ssize_t core99_nvram_size(void) } #ifdef CONFIG_PPC32 -static volatile unsigned char *nvram_addr; +static volatile unsigned char __iomem *nvram_addr; static int nvram_mult; static unsigned char direct_nvram_read_byte(int addr) @@ -287,7 +285,7 @@ static int sm_erase_bank(int bank) int stat, i; unsigned long timeout; - u8* base = (u8 *)nvram_data + core99_bank*NVRAM_SIZE; + u8 __iomem *base = (u8 __iomem *)nvram_data + core99_bank*NVRAM_SIZE; DBG("nvram: Sharp/Micron Erasing bank %d...\n", bank); @@ -319,7 +317,7 @@ static int sm_write_bank(int bank, u8* datas) int i, stat = 0; unsigned long timeout; - u8* base = (u8 *)nvram_data + core99_bank*NVRAM_SIZE; + u8 __iomem *base = (u8 __iomem *)nvram_data + core99_bank*NVRAM_SIZE; DBG("nvram: Sharp/Micron Writing bank %d...\n", bank); @@ -354,7 +352,7 @@ static int amd_erase_bank(int bank) int i, stat = 0; unsigned long timeout; - u8* base = (u8 *)nvram_data + core99_bank*NVRAM_SIZE; + u8 __iomem *base = (u8 __iomem *)nvram_data + core99_bank*NVRAM_SIZE; DBG("nvram: AMD Erasing bank %d...\n", bank); @@ -401,7 +399,7 @@ static int amd_write_bank(int bank, u8* datas) int i, stat = 0; unsigned long timeout; - u8* base = (u8 *)nvram_data + core99_bank*NVRAM_SIZE; + u8 __iomem *base = (u8 __iomem *)nvram_data + core99_bank*NVRAM_SIZE; DBG("nvram: AMD Writing bank %d...\n", bank); @@ -599,7 +597,7 @@ int __init pmac_nvram_init(void) } #ifdef CONFIG_PPC32 - if (_machine == _MACH_chrp && nvram_naddrs == 1) { + if (machine_is(chrp) && nvram_naddrs == 1) { nvram_data = ioremap(r1.start, s1); nvram_mult = 1; ppc_md.nvram_read_val = direct_nvram_read_byte; diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c index de3f30e..f5d8d15 100644 --- a/arch/powerpc/platforms/powermac/pci.c +++ b/arch/powerpc/platforms/powermac/pci.c @@ -1201,7 +1201,7 @@ void __init pmac_pcibios_after_init(void) #ifdef CONFIG_PPC32 void pmac_pci_fixup_cardbus(struct pci_dev* dev) { - if (_machine != _MACH_Pmac) + if (!machine_is(powermac)) return; /* * Fix the interrupt routing on the various cardbus bridges @@ -1244,8 +1244,9 @@ void pmac_pci_fixup_pciata(struct pci_dev* dev) * On PowerMacs, we try to switch any PCI ATA controller to * fully native mode */ - if (_machine != _MACH_Pmac) + if (!machine_is(powermac)) return; + /* Some controllers don't have the class IDE */ if (dev->vendor == PCI_VENDOR_ID_PROMISE) switch(dev->device) { diff --git a/arch/powerpc/platforms/powermac/pfunc_base.c b/arch/powerpc/platforms/powermac/pfunc_base.c index 9b7150f..a3bd3e7 100644 --- a/arch/powerpc/platforms/powermac/pfunc_base.c +++ b/arch/powerpc/platforms/powermac/pfunc_base.c @@ -336,6 +336,8 @@ int __init pmac_pfunc_base_install(void) return 0; pfbase_inited = 1; + if (!machine_is(powermac)) + return 0; DBG("Installing base platform functions...\n"); diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c index 1955462..4d15e39 100644 --- a/arch/powerpc/platforms/powermac/setup.c +++ b/arch/powerpc/platforms/powermac/setup.c @@ -86,11 +86,10 @@ int ppc_override_l2cr = 0; int ppc_override_l2cr_value; int has_l2cache = 0; -int pmac_newworld = 1; +int pmac_newworld; static int current_root_goodness = -1; -extern int pmac_newworld; extern struct machdep_calls pmac_md; #define DEFAULT_ROOT_DEVICE Root_SDA1 /* sda1 - slightly silly choice */ @@ -308,9 +307,10 @@ static void __init pmac_setup_arch(void) for (ic = NULL; (ic = of_find_all_nodes(ic)) != NULL; ) if (get_property(ic, "interrupt-controller", NULL)) break; - pmac_newworld = (ic != NULL); - if (ic) + if (ic) { + pmac_newworld = 1; of_node_put(ic); + } /* Lookup PCI hosts */ pmac_pci_init(); @@ -350,6 +350,13 @@ static void __init pmac_setup_arch(void) smp_ops = &psurge_smp_ops; #endif #endif /* CONFIG_SMP */ + +#ifdef CONFIG_ADB + if (strstr(cmd_line, "adb_sync")) { + extern int __adb_probe_sync; + __adb_probe_sync = 1; + } +#endif /* CONFIG_ADB */ } char *bootpath; @@ -576,30 +583,6 @@ pmac_halt(void) pmac_power_off(); } -#ifdef CONFIG_PPC32 -void __init pmac_init(void) -{ - /* isa_io_base gets set in pmac_pci_init */ - isa_mem_base = PMAC_ISA_MEM_BASE; - pci_dram_offset = PMAC_PCI_DRAM_OFFSET; - ISA_DMA_THRESHOLD = ~0L; - DMA_MODE_READ = 1; - DMA_MODE_WRITE = 2; - - ppc_md = pmac_md; - -#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) -#ifdef CONFIG_BLK_DEV_IDE_PMAC - ppc_ide_md.ide_init_hwif = pmac_ide_init_hwif_ports; - ppc_ide_md.default_io_base = pmac_ide_get_base; -#endif /* CONFIG_BLK_DEV_IDE_PMAC */ -#endif /* defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) */ - - if (ppc_md.progress) ppc_md.progress("pmac_init(): exit", 0); - -} -#endif - /* * Early initialization. */ @@ -621,10 +604,6 @@ static void __init pmac_init_early(void) /* Probe motherboard chipset */ pmac_feature_init(); - /* We can NAP */ - powersave_nap = 1; - printk(KERN_INFO "Using native/NAP idle loop\n"); - /* Initialize debug stuff */ udbg_scc_init(!!strstr(cmd_line, "sccdbg")); udbg_adb_init(!!strstr(cmd_line, "btextdbg")); @@ -650,6 +629,12 @@ static int __init pmac_declare_of_platform_devices(void) { struct device_node *np; + if (machine_is(chrp)) + return -1; + + if (!machine_is(powermac)) + return 0; + np = of_find_node_by_name(NULL, "valkyrie"); if (np) of_platform_device_create(np, "valkyrie", NULL); @@ -670,12 +655,15 @@ device_initcall(pmac_declare_of_platform_devices); /* * Called very early, MMU is off, device-tree isn't unflattened */ -static int __init pmac_probe(int platform) +static int __init pmac_probe(void) { -#ifdef CONFIG_PPC64 - if (platform != PLATFORM_POWERMAC) + unsigned long root = of_get_flat_dt_root(); + + if (!of_flat_dt_is_compatible(root, "Power Macintosh") && + !of_flat_dt_is_compatible(root, "MacRISC")) return 0; +#ifdef CONFIG_PPC64 /* * On U3, the DART (iommu) must be allocated now since it * has an impact on htab_initialize (due to the large page it @@ -685,6 +673,23 @@ static int __init pmac_probe(int platform) alloc_dart_table(); #endif +#ifdef CONFIG_PPC32 + /* isa_io_base gets set in pmac_pci_init */ + isa_mem_base = PMAC_ISA_MEM_BASE; + pci_dram_offset = PMAC_PCI_DRAM_OFFSET; + ISA_DMA_THRESHOLD = ~0L; + DMA_MODE_READ = 1; + DMA_MODE_WRITE = 2; + +#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) +#ifdef CONFIG_BLK_DEV_IDE_PMAC + ppc_ide_md.ide_init_hwif = pmac_ide_init_hwif_ports; + ppc_ide_md.default_io_base = pmac_ide_get_base; +#endif /* CONFIG_BLK_DEV_IDE_PMAC */ +#endif /* defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) */ + +#endif /* CONFIG_PPC32 */ + #ifdef CONFIG_PMAC_SMU /* * SMU based G5s need some memory below 2Gb, at least the current @@ -713,10 +718,8 @@ static int pmac_pci_probe_mode(struct pci_bus *bus) } #endif -struct machdep_calls __initdata pmac_md = { -#if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC64) - .cpu_die = generic_mach_cpu_die, -#endif +define_machine(powermac) { + .name = "PowerMac", .probe = pmac_probe, .setup_arch = pmac_setup_arch, .init_early = pmac_init_early, @@ -737,7 +740,7 @@ struct machdep_calls __initdata pmac_md = { .progress = udbg_progress, #ifdef CONFIG_PPC64 .pci_probe_mode = pmac_pci_probe_mode, - .idle_loop = native_idle, + .power_save = power4_idle, .enable_pmcs = power4_enable_pmcs, #ifdef CONFIG_KEXEC .machine_kexec = default_machine_kexec, @@ -750,4 +753,7 @@ struct machdep_calls __initdata pmac_md = { .pcibios_after_init = pmac_pcibios_after_init, .phys_mem_access_prot = pci_phys_mem_access_prot, #endif +#if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC64) + .cpu_die = generic_mach_cpu_die, +#endif }; diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c index 6d64a9b..1065d87 100644 --- a/arch/powerpc/platforms/powermac/smp.c +++ b/arch/powerpc/platforms/powermac/smp.c @@ -191,9 +191,7 @@ static void smp_psurge_message_pass(int target, int msg) if (num_online_cpus() < 2) return; - for (i = 0; i < NR_CPUS; i++) { - if (!cpu_online(i)) - continue; + for_each_online_cpu(i) { if (target == MSG_ALL || (target == MSG_ALL_BUT_SELF && i != smp_processor_id()) || target == i) { diff --git a/arch/powerpc/platforms/powermac/time.c b/arch/powerpc/platforms/powermac/time.c index 5d9afa1..890758a 100644 --- a/arch/powerpc/platforms/powermac/time.c +++ b/arch/powerpc/platforms/powermac/time.c @@ -336,10 +336,10 @@ static struct pmu_sleep_notifier time_sleep_notifier = { */ void __init pmac_calibrate_decr(void) { -#ifdef CONFIG_PM +#if defined(CONFIG_PM) && defined(CONFIG_ADB_PMU) /* XXX why here? */ pmu_register_sleep_notifier(&time_sleep_notifier); -#endif /* CONFIG_PM */ +#endif generic_calibrate_decr(); diff --git a/arch/powerpc/platforms/powermac/udbg_scc.c b/arch/powerpc/platforms/powermac/udbg_scc.c index c4352a8..b4fa9f0 100644 --- a/arch/powerpc/platforms/powermac/udbg_scc.c +++ b/arch/powerpc/platforms/powermac/udbg_scc.c @@ -116,7 +116,7 @@ void udbg_scc_init(int force_scc) /* Setup for 57600 8N1 */ if (ch == ch_a) addr += 0x20; - sccc = (volatile u8 * __iomem) ioremap(addr & PAGE_MASK, PAGE_SIZE) ; + sccc = ioremap(addr & PAGE_MASK, PAGE_SIZE) ; sccc += addr & ~PAGE_MASK; sccd = sccc + 0x10; diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig index 4e5c8f8..a57032c 100644 --- a/arch/powerpc/platforms/pseries/Kconfig +++ b/arch/powerpc/platforms/pseries/Kconfig @@ -19,7 +19,7 @@ config SCANLOG depends on RTAS_PROC && PPC_PSERIES config LPARCFG - tristate "LPAR Configuration Data" + bool "LPAR Configuration Data" depends on PPC_PSERIES || PPC_ISERIES help Provide system capacity information via human readable diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile index 61616d1..9308986 100644 --- a/arch/powerpc/platforms/pseries/Makefile +++ b/arch/powerpc/platforms/pseries/Makefile @@ -1,5 +1,6 @@ obj-y := pci.o lpar.o hvCall.o nvram.o reconfig.o \ - setup.o iommu.o ras.o rtasd.o pci_dlpar.o + setup.o iommu.o ras.o rtasd.o pci_dlpar.o \ + firmware.o obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_IBMVIO) += vio.o obj-$(CONFIG_XICS) += xics.o diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c index 2ab9dcd..9b2b1cb 100644 --- a/arch/powerpc/platforms/pseries/eeh.c +++ b/arch/powerpc/platforms/pseries/eeh.c @@ -1018,7 +1018,7 @@ static int __init eeh_init_proc(void) { struct proc_dir_entry *e; - if (platform_is_pseries()) { + if (machine_is(pseries)) { e = create_proc_entry("ppc64/eeh", 0, NULL); if (e) e->proc_fops = &proc_eeh_operations; diff --git a/arch/powerpc/platforms/pseries/eeh_driver.c b/arch/powerpc/platforms/pseries/eeh_driver.c index b811d5f..cc2495a 100644 --- a/arch/powerpc/platforms/pseries/eeh_driver.c +++ b/arch/powerpc/platforms/pseries/eeh_driver.c @@ -257,6 +257,7 @@ void handle_eeh_events (struct eeh_event *event) struct pci_bus *frozen_bus; int rc = 0; enum pci_ers_result result = PCI_ERS_RESULT_NONE; + const char *pci_str, *drv_str; frozen_dn = find_device_pe(event->dn); frozen_bus = pcibios_find_pci_bus(frozen_dn); @@ -291,6 +292,13 @@ void handle_eeh_events (struct eeh_event *event) frozen_pdn = PCI_DN(frozen_dn); frozen_pdn->eeh_freeze_count++; + + pci_str = pci_name (frozen_pdn->pcidev); + drv_str = pcid_name (frozen_pdn->pcidev); + if (!pci_str) { + pci_str = pci_name (event->dev); + drv_str = pcid_name (event->dev); + } if (frozen_pdn->eeh_freeze_count > EEH_MAX_ALLOWED_FREEZES) goto hard_fail; @@ -306,9 +314,7 @@ void handle_eeh_events (struct eeh_event *event) eeh_slot_error_detail(frozen_pdn, 1 /* Temporary Error */); printk(KERN_WARNING "EEH: This PCI device has failed %d times since last reboot: %s - %s\n", - frozen_pdn->eeh_freeze_count, - pci_name (frozen_pdn->pcidev), - pcid_name(frozen_pdn->pcidev)); + frozen_pdn->eeh_freeze_count, drv_str, pci_str); /* Walk the various device drivers attached to this slot through * a reset sequence, giving each an opportunity to do what it needs @@ -360,9 +366,7 @@ hard_fail: "EEH: PCI device %s - %s has failed %d times \n" "and has been permanently disabled. Please try reseating\n" "this device or replacing it.\n", - pci_name (frozen_pdn->pcidev), - pcid_name(frozen_pdn->pcidev), - frozen_pdn->eeh_freeze_count); + drv_str, pci_str, frozen_pdn->eeh_freeze_count); eeh_slot_error_detail(frozen_pdn, 2 /* Permanent Error */); diff --git a/arch/powerpc/platforms/pseries/firmware.c b/arch/powerpc/platforms/pseries/firmware.c new file mode 100644 index 0000000..c01d8f0 --- /dev/null +++ b/arch/powerpc/platforms/pseries/firmware.c @@ -0,0 +1,103 @@ +/* + * pSeries firmware setup code. + * + * Portions from arch/powerpc/platforms/pseries/setup.c: + * Copyright (C) 1995 Linus Torvalds + * Adapted from 'alpha' version by Gary Thomas + * Modified by Cort Dougan (cort@cs.nmt.edu) + * Modified by PPC64 Team, IBM Corp + * + * Portions from arch/powerpc/kernel/firmware.c + * Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org) + * Modifications for ppc64: + * Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com> + * Copyright (C) 2005 Stephen Rothwell, IBM Corporation + * + * Copyright 2006 IBM Corporation. + * + * 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, or (at your option) any later version. + */ + +#undef DEBUG + +#include <asm/firmware.h> +#include <asm/prom.h> + +#ifdef DEBUG +#define DBG(fmt...) udbg_printf(fmt) +#else +#define DBG(fmt...) +#endif + +typedef struct { + unsigned long val; + char * name; +} firmware_feature_t; + +static __initdata firmware_feature_t +firmware_features_table[FIRMWARE_MAX_FEATURES] = { + {FW_FEATURE_PFT, "hcall-pft"}, + {FW_FEATURE_TCE, "hcall-tce"}, + {FW_FEATURE_SPRG0, "hcall-sprg0"}, + {FW_FEATURE_DABR, "hcall-dabr"}, + {FW_FEATURE_COPY, "hcall-copy"}, + {FW_FEATURE_ASR, "hcall-asr"}, + {FW_FEATURE_DEBUG, "hcall-debug"}, + {FW_FEATURE_PERF, "hcall-perf"}, + {FW_FEATURE_DUMP, "hcall-dump"}, + {FW_FEATURE_INTERRUPT, "hcall-interrupt"}, + {FW_FEATURE_MIGRATE, "hcall-migrate"}, + {FW_FEATURE_PERFMON, "hcall-perfmon"}, + {FW_FEATURE_CRQ, "hcall-crq"}, + {FW_FEATURE_VIO, "hcall-vio"}, + {FW_FEATURE_RDMA, "hcall-rdma"}, + {FW_FEATURE_LLAN, "hcall-lLAN"}, + {FW_FEATURE_BULK, "hcall-bulk"}, + {FW_FEATURE_XDABR, "hcall-xdabr"}, + {FW_FEATURE_MULTITCE, "hcall-multi-tce"}, + {FW_FEATURE_SPLPAR, "hcall-splpar"}, +}; + +/* Build up the firmware features bitmask using the contents of + * device-tree/ibm,hypertas-functions. Ultimately this functionality may + * be moved into prom.c prom_init(). + */ +void __init fw_feature_init(void) +{ + struct device_node *dn; + char *hypertas, *s; + int len, i; + + DBG(" -> fw_feature_init()\n"); + + dn = of_find_node_by_path("/rtas"); + if (dn == NULL) { + printk(KERN_ERR "WARNING! Cannot find RTAS in device-tree!\n"); + goto out; + } + + hypertas = get_property(dn, "ibm,hypertas-functions", &len); + if (hypertas == NULL) + goto out; + + for (s = hypertas; s < hypertas + len; s += strlen(s) + 1) { + for (i = 0; i < FIRMWARE_MAX_FEATURES; i++) { + /* check value against table of strings */ + if (!firmware_features_table[i].name || + strcmp(firmware_features_table[i].name, s)) + continue; + + /* we have a match */ + powerpc_firmware_features |= + firmware_features_table[i].val; + break; + } + } + +out: + of_node_put(dn); + DBG(" <- fw_feature_init()\n"); +} diff --git a/arch/powerpc/platforms/pseries/firmware.h b/arch/powerpc/platforms/pseries/firmware.h new file mode 100644 index 0000000..714f56f --- /dev/null +++ b/arch/powerpc/platforms/pseries/firmware.h @@ -0,0 +1,17 @@ +/* + * Copyright 2006 IBM Corporation. + * + * 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, or (at your option) any later version. + */ + +#ifndef _PSERIES_FIRMWARE_H +#define _PSERIES_FIRMWARE_H + +#include <asm/firmware.h> + +extern void __init fw_feature_init(void); + +#endif /* _PSERIES_FIRMWARE_H */ diff --git a/arch/powerpc/platforms/pseries/hvCall.S b/arch/powerpc/platforms/pseries/hvCall.S index 176e8da..db7c19f 100644 --- a/arch/powerpc/platforms/pseries/hvCall.S +++ b/arch/powerpc/platforms/pseries/hvCall.S @@ -1,6 +1,4 @@ /* - * arch/ppc64/kernel/pSeries_hvCall.S - * * This file contains the generic code to perform a call to the * pSeries LPAR hypervisor. * NOTE: this file will go away when we move to inline this work. diff --git a/arch/powerpc/platforms/pseries/hvconsole.c b/arch/powerpc/platforms/pseries/hvconsole.c index 138e128..ba6befd 100644 --- a/arch/powerpc/platforms/pseries/hvconsole.c +++ b/arch/powerpc/platforms/pseries/hvconsole.c @@ -62,6 +62,11 @@ int hvc_put_chars(uint32_t vtermno, const char *buf, int count) unsigned long *lbuf = (unsigned long *) buf; long ret; + + /* hcall will ret H_PARAMETER if 'count' exceeds firmware max.*/ + if (count > MAX_VIO_PUT_CHARS) + count = MAX_VIO_PUT_CHARS; + ret = plpar_hcall_norets(H_PUT_TERM_CHAR, vtermno, count, lbuf[0], lbuf[1]); if (ret == H_Success) diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index 48cfbfc..2643078 100644 --- a/arch/powerpc/platforms/pseries/iommu.c +++ b/arch/powerpc/platforms/pseries/iommu.c @@ -1,6 +1,4 @@ /* - * arch/ppc64/kernel/pSeries_iommu.c - * * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation * * Rewrite, cleanup: @@ -582,7 +580,7 @@ void iommu_init_early_pSeries(void) return; } - if (platform_is_lpar()) { + if (firmware_has_feature(FW_FEATURE_LPAR)) { if (firmware_has_feature(FW_FEATURE_MULTITCE)) { ppc_md.tce_build = tce_buildmulti_pSeriesLP; ppc_md.tce_free = tce_freemulti_pSeriesLP; diff --git a/arch/powerpc/platforms/pseries/pci.c b/arch/powerpc/platforms/pseries/pci.c index 999a962..e97e67f 100644 --- a/arch/powerpc/platforms/pseries/pci.c +++ b/arch/powerpc/platforms/pseries/pci.c @@ -1,6 +1,4 @@ /* - * arch/ppc64/kernel/pSeries_pci.c - * * Copyright (C) 2001 Dave Engebretsen, IBM Corporation * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM * @@ -122,7 +120,7 @@ static void fixup_winbond_82c105(struct pci_dev* dev) int i; unsigned int reg; - if (!platform_is_pseries()) + if (!machine_is(pseries)) return; printk("Using INTC for W82c105 IDE controller.\n"); diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c index f3bad90..6bfacc2 100644 --- a/arch/powerpc/platforms/pseries/pci_dlpar.c +++ b/arch/powerpc/platforms/pseries/pci_dlpar.c @@ -27,6 +27,8 @@ #include <linux/pci.h> #include <asm/pci-bridge.h> +#include <asm/ppc-pci.h> +#include <asm/firmware.h> static struct pci_bus * find_bus_among_children(struct pci_bus *bus, @@ -151,20 +153,24 @@ pcibios_pci_config_bridge(struct pci_dev *dev) void pcibios_add_pci_devices(struct pci_bus * bus) { - int slotno, num; + int slotno, num, mode; struct pci_dev *dev; struct device_node *dn = pci_bus_to_OF_node(bus); eeh_add_device_tree_early(dn); - if (_machine == PLATFORM_PSERIES_LPAR) { + mode = PCI_PROBE_NORMAL; + if (ppc_md.pci_probe_mode) + mode = ppc_md.pci_probe_mode(bus); + + if (mode == PCI_PROBE_DEVTREE) { /* use ofdt-based probe */ of_scan_bus(dn, bus); if (!list_empty(&bus->devices)) { pcibios_fixup_new_pci_devices(bus, 0); pci_bus_add_devices(bus); } - } else { + } else if (mode == PCI_PROBE_NORMAL) { /* use legacy probe */ slotno = PCI_SLOT(PCI_DN(dn->child)->devfn); num = pci_scan_slot(bus, PCI_DEVFN(slotno, 0)); @@ -179,3 +185,30 @@ pcibios_add_pci_devices(struct pci_bus * bus) } } EXPORT_SYMBOL_GPL(pcibios_add_pci_devices); + +struct pci_controller * __devinit init_phb_dynamic(struct device_node *dn) +{ + struct pci_controller *phb; + int primary; + + primary = list_empty(&hose_list); + phb = pcibios_alloc_controller(dn); + if (!phb) + return NULL; + setup_phb(dn, phb); + pci_process_bridge_OF_ranges(phb, dn, 0); + + pci_setup_phb_io_dynamic(phb, primary); + + pci_devs_phb_init_dynamic(phb); + + if (dn->child) + eeh_add_device_tree_early(dn); + + scan_phb(phb); + pcibios_fixup_new_pci_devices(phb->bus, 0); + pci_bus_add_devices(phb->bus); + + return phb; +} +EXPORT_SYMBOL_GPL(init_phb_dynamic); diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c index b046bcf..9639c66 100644 --- a/arch/powerpc/platforms/pseries/ras.c +++ b/arch/powerpc/platforms/pseries/ras.c @@ -132,7 +132,7 @@ static int __init init_ras_IRQ(void) of_node_put(np); } - return 1; + return 0; } __initcall(init_ras_IRQ); diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c index 86cfa6e..1773103 100644 --- a/arch/powerpc/platforms/pseries/reconfig.c +++ b/arch/powerpc/platforms/pseries/reconfig.c @@ -17,8 +17,9 @@ #include <linux/proc_fs.h> #include <asm/prom.h> -#include <asm/pSeries_reconfig.h> +#include <asm/machdep.h> #include <asm/uaccess.h> +#include <asm/pSeries_reconfig.h> @@ -94,16 +95,16 @@ static struct device_node *derive_parent(const char *path) return parent; } -static struct notifier_block *pSeries_reconfig_chain; +static BLOCKING_NOTIFIER_HEAD(pSeries_reconfig_chain); int pSeries_reconfig_notifier_register(struct notifier_block *nb) { - return notifier_chain_register(&pSeries_reconfig_chain, nb); + return blocking_notifier_chain_register(&pSeries_reconfig_chain, nb); } void pSeries_reconfig_notifier_unregister(struct notifier_block *nb) { - notifier_chain_unregister(&pSeries_reconfig_chain, nb); + blocking_notifier_chain_unregister(&pSeries_reconfig_chain, nb); } static int pSeries_reconfig_add_node(const char *path, struct property *proplist) @@ -131,7 +132,7 @@ static int pSeries_reconfig_add_node(const char *path, struct property *proplist goto out_err; } - err = notifier_call_chain(&pSeries_reconfig_chain, + err = blocking_notifier_call_chain(&pSeries_reconfig_chain, PSERIES_RECONFIG_ADD, np); if (err == NOTIFY_BAD) { printk(KERN_ERR "Failed to add device node %s\n", path); @@ -171,7 +172,7 @@ static int pSeries_reconfig_remove_node(struct device_node *np) remove_node_proc_entries(np); - notifier_call_chain(&pSeries_reconfig_chain, + blocking_notifier_call_chain(&pSeries_reconfig_chain, PSERIES_RECONFIG_REMOVE, np); of_detach_node(np); @@ -508,7 +509,7 @@ static int proc_ppc64_create_ofdt(void) { struct proc_dir_entry *ent; - if (!platform_is_pseries()) + if (!machine_is(pseries)) return 0; ent = create_proc_entry("ppc64/ofdt", S_IWUSR, NULL); diff --git a/arch/powerpc/platforms/pseries/rtasd.c b/arch/powerpc/platforms/pseries/rtasd.c index a6f628d..fcc4d56 100644 --- a/arch/powerpc/platforms/pseries/rtasd.c +++ b/arch/powerpc/platforms/pseries/rtasd.c @@ -27,6 +27,7 @@ #include <asm/prom.h> #include <asm/nvram.h> #include <asm/atomic.h> +#include <asm/machdep.h> #if 0 #define DEBUG(A...) printk(KERN_ERR A) @@ -481,7 +482,7 @@ static int __init rtas_init(void) { struct proc_dir_entry *entry; - if (!platform_is_pseries()) + if (!machine_is(pseries)) return 0; /* No RTAS */ diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 9edeca8..b2fbf8b 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -60,7 +60,6 @@ #include <asm/time.h> #include <asm/nvram.h> #include "xics.h" -#include <asm/firmware.h> #include <asm/pmc.h> #include <asm/mpic.h> #include <asm/ppc-pci.h> @@ -70,6 +69,7 @@ #include "plpar_wrappers.h" #include "ras.h" +#include "firmware.h" #ifdef DEBUG #define DBG(fmt...) udbg_printf(fmt) @@ -81,8 +81,8 @@ extern void find_udbg_vterm(void); int fwnmi_active; /* TRUE if an FWNMI handler is present */ -static void pseries_shared_idle(void); -static void pseries_dedicated_idle(void); +static void pseries_shared_idle_sleep(void); +static void pseries_dedicated_idle_sleep(void); struct mpic *pSeries_mpic; @@ -236,17 +236,16 @@ static void __init pSeries_setup_arch(void) vpa_init(boot_cpuid); if (get_lppaca()->shared_proc) { printk(KERN_INFO "Using shared processor idle loop\n"); - ppc_md.idle_loop = pseries_shared_idle; + ppc_md.power_save = pseries_shared_idle_sleep; } else { printk(KERN_INFO "Using dedicated idle loop\n"); - ppc_md.idle_loop = pseries_dedicated_idle; + ppc_md.power_save = pseries_dedicated_idle_sleep; } } else { printk(KERN_INFO "Using default idle loop\n"); - ppc_md.idle_loop = default_idle; } - if (platform_is_lpar()) + if (firmware_has_feature(FW_FEATURE_LPAR)) ppc_md.enable_pmcs = pseries_lpar_enable_pmcs; else ppc_md.enable_pmcs = power4_enable_pmcs; @@ -262,53 +261,6 @@ static int __init pSeries_init_panel(void) } arch_initcall(pSeries_init_panel); - -/* Build up the ppc64_firmware_features bitmask field - * using contents of device-tree/ibm,hypertas-functions. - * Ultimately this functionality may be moved into prom.c prom_init(). - */ -static void __init fw_feature_init(void) -{ - struct device_node * dn; - char * hypertas; - unsigned int len; - - DBG(" -> fw_feature_init()\n"); - - ppc64_firmware_features = 0; - dn = of_find_node_by_path("/rtas"); - if (dn == NULL) { - printk(KERN_ERR "WARNING ! Cannot find RTAS in device-tree !\n"); - goto no_rtas; - } - - hypertas = get_property(dn, "ibm,hypertas-functions", &len); - if (hypertas) { - while (len > 0){ - int i, hypertas_len; - /* check value against table of strings */ - for(i=0; i < FIRMWARE_MAX_FEATURES ;i++) { - if ((firmware_features_table[i].name) && - (strcmp(firmware_features_table[i].name,hypertas))==0) { - /* we have a match */ - ppc64_firmware_features |= - (firmware_features_table[i].val); - break; - } - } - hypertas_len = strlen(hypertas); - len -= hypertas_len +1; - hypertas+= hypertas_len +1; - } - } - - of_node_put(dn); -no_rtas: - - DBG(" <- fw_feature_init()\n"); -} - - static void __init pSeries_discover_pic(void) { struct device_node *np; @@ -367,21 +319,16 @@ static int pseries_set_xdabr(unsigned long dabr) */ static void __init pSeries_init_early(void) { - int iommu_off = 0; - DBG(" -> pSeries_init_early()\n"); fw_feature_init(); - if (platform_is_lpar()) + if (firmware_has_feature(FW_FEATURE_LPAR)) hpte_init_lpar(); - else { + else hpte_init_native(); - iommu_off = (of_chosen && - get_property(of_chosen, "linux,iommu-off", NULL)); - } - if (platform_is_lpar()) + if (firmware_has_feature(FW_FEATURE_LPAR)) find_udbg_vterm(); if (firmware_has_feature(FW_FEATURE_DABR)) @@ -425,158 +372,128 @@ static int pSeries_check_legacy_ioport(unsigned int baseport) /* * Called very early, MMU is off, device-tree isn't unflattened */ -extern struct machdep_calls pSeries_md; -static int __init pSeries_probe(int platform) +static int __init pSeries_probe_hypertas(unsigned long node, + const char *uname, int depth, + void *data) { - if (platform != PLATFORM_PSERIES && - platform != PLATFORM_PSERIES_LPAR) - return 0; + if (depth != 1 || + (strcmp(uname, "rtas") != 0 && strcmp(uname, "rtas@0") != 0)) + return 0; - /* if we have some ppc_md fixups for LPAR to do, do - * it here ... - */ + if (of_get_flat_dt_prop(node, "ibm,hypertas-functions", NULL) != NULL) + powerpc_firmware_features |= FW_FEATURE_LPAR; - return 1; + return 1; } -DECLARE_PER_CPU(unsigned long, smt_snooze_delay); - -static inline void dedicated_idle_sleep(unsigned int cpu) +static int __init pSeries_probe(void) { - struct lppaca *plppaca = &lppaca[cpu ^ 1]; + char *dtype = of_get_flat_dt_prop(of_get_flat_dt_root(), + "device_type", NULL); + if (dtype == NULL) + return 0; + if (strcmp(dtype, "chrp")) + return 0; - /* Only sleep if the other thread is not idle */ - if (!(plppaca->idle)) { - local_irq_disable(); + DBG("pSeries detected, looking for LPAR capability...\n"); - /* - * We are about to sleep the thread and so wont be polling any - * more. - */ - clear_thread_flag(TIF_POLLING_NRFLAG); - smp_mb__after_clear_bit(); - - /* - * SMT dynamic mode. Cede will result in this thread going - * dormant, if the partner thread is still doing work. Thread - * wakes up if partner goes idle, an interrupt is presented, or - * a prod occurs. Returning from the cede enables external - * interrupts. - */ - if (!need_resched()) - cede_processor(); - else - local_irq_enable(); - set_thread_flag(TIF_POLLING_NRFLAG); - } else { - /* - * Give the HV an opportunity at the processor, since we are - * not doing any work. - */ - poll_pending(); - } + /* Now try to figure out if we are running on LPAR */ + of_scan_flat_dt(pSeries_probe_hypertas, NULL); + + DBG("Machine is%s LPAR !\n", + (powerpc_firmware_features & FW_FEATURE_LPAR) ? "" : " not"); + + return 1; } -static void pseries_dedicated_idle(void) + +DECLARE_PER_CPU(unsigned long, smt_snooze_delay); + +static void pseries_dedicated_idle_sleep(void) { unsigned int cpu = smp_processor_id(); unsigned long start_snooze; unsigned long *smt_snooze_delay = &__get_cpu_var(smt_snooze_delay); - set_thread_flag(TIF_POLLING_NRFLAG); - - while (1) { - /* - * Indicate to the HV that we are idle. Now would be - * a good time to find other work to dispatch. - */ - get_lppaca()->idle = 1; - - if (!need_resched()) { - start_snooze = get_tb() + - *smt_snooze_delay * tb_ticks_per_usec; - - while (!need_resched() && !cpu_is_offline(cpu)) { - ppc64_runlatch_off(); - - /* - * Go into low thread priority and possibly - * low power mode. - */ - HMT_low(); - HMT_very_low(); - - if (*smt_snooze_delay != 0 && - get_tb() > start_snooze) { - HMT_medium(); - dedicated_idle_sleep(cpu); - } - - } - - HMT_medium(); - } - get_lppaca()->idle = 0; - ppc64_runlatch_on(); - - preempt_enable_no_resched(); - schedule(); - preempt_disable(); + /* + * Indicate to the HV that we are idle. Now would be + * a good time to find other work to dispatch. + */ + get_lppaca()->idle = 1; - if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING) - cpu_die(); - } -} + /* + * We come in with interrupts disabled, and need_resched() + * has been checked recently. If we should poll for a little + * while, do so. + */ + if (*smt_snooze_delay) { + start_snooze = get_tb() + + *smt_snooze_delay * tb_ticks_per_usec; + local_irq_enable(); + set_thread_flag(TIF_POLLING_NRFLAG); -static void pseries_shared_idle(void) -{ - unsigned int cpu = smp_processor_id(); + while (get_tb() < start_snooze) { + if (need_resched() || cpu_is_offline(cpu)) + goto out; + ppc64_runlatch_off(); + HMT_low(); + HMT_very_low(); + } - while (1) { - /* - * Indicate to the HV that we are idle. Now would be - * a good time to find other work to dispatch. - */ - get_lppaca()->idle = 1; + HMT_medium(); + clear_thread_flag(TIF_POLLING_NRFLAG); + smp_mb(); + local_irq_disable(); + if (need_resched() || cpu_is_offline(cpu)) + goto out; + } - while (!need_resched() && !cpu_is_offline(cpu)) { - local_irq_disable(); - ppc64_runlatch_off(); + /* + * Cede if the other thread is not idle, so that it can + * go single-threaded. If the other thread is idle, + * we ask the hypervisor if it has pending work it + * wants to do and cede if it does. Otherwise we keep + * polling in order to reduce interrupt latency. + * + * Doing the cede when the other thread is active will + * result in this thread going dormant, meaning the other + * thread gets to run in single-threaded (ST) mode, which + * is slightly faster than SMT mode with this thread at + * very low priority. The cede enables interrupts, which + * doesn't matter here. + */ + if (!lppaca[cpu ^ 1].idle || poll_pending() == H_Pending) + cede_processor(); - /* - * Yield the processor to the hypervisor. We return if - * an external interrupt occurs (which are driven prior - * to returning here) or if a prod occurs from another - * processor. When returning here, external interrupts - * are enabled. - * - * Check need_resched() again with interrupts disabled - * to avoid a race. - */ - if (!need_resched()) - cede_processor(); - else - local_irq_enable(); - - HMT_medium(); - } +out: + HMT_medium(); + get_lppaca()->idle = 0; +} - get_lppaca()->idle = 0; - ppc64_runlatch_on(); +static void pseries_shared_idle_sleep(void) +{ + /* + * Indicate to the HV that we are idle. Now would be + * a good time to find other work to dispatch. + */ + get_lppaca()->idle = 1; - preempt_enable_no_resched(); - schedule(); - preempt_disable(); + /* + * Yield the processor to the hypervisor. We return if + * an external interrupt occurs (which are driven prior + * to returning here) or if a prod occurs from another + * processor. When returning here, external interrupts + * are enabled. + */ + cede_processor(); - if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING) - cpu_die(); - } + get_lppaca()->idle = 0; } static int pSeries_pci_probe_mode(struct pci_bus *bus) { - if (platform_is_lpar()) + if (firmware_has_feature(FW_FEATURE_LPAR)) return PCI_PROBE_DEVTREE; return PCI_PROBE_NORMAL; } @@ -602,7 +519,8 @@ static void pseries_kexec_cpu_down(int crash_shutdown, int secondary) } #endif -struct machdep_calls __initdata pSeries_md = { +define_machine(pseries) { + .name = "pSeries", .probe = pSeries_probe, .setup_arch = pSeries_setup_arch, .init_early = pSeries_init_early, diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c index 8d710af5..3cf78a6 100644 --- a/arch/powerpc/platforms/pseries/smp.c +++ b/arch/powerpc/platforms/pseries/smp.c @@ -443,7 +443,7 @@ void __init smp_init_pSeries(void) smp_ops->cpu_die = pSeries_cpu_die; /* Processors can be added/removed only on LPAR */ - if (platform_is_lpar()) + if (firmware_has_feature(FW_FEATURE_LPAR)) pSeries_reconfig_notifier_register(&pSeries_smp_nb); #endif diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c index fd823c7..4864cb3 100644 --- a/arch/powerpc/platforms/pseries/xics.c +++ b/arch/powerpc/platforms/pseries/xics.c @@ -20,6 +20,7 @@ #include <linux/gfp.h> #include <linux/radix-tree.h> #include <linux/cpu.h> +#include <asm/firmware.h> #include <asm/prom.h> #include <asm/io.h> #include <asm/pgtable.h> @@ -499,7 +500,7 @@ nextnode: np; np = of_find_node_by_type(np, "cpu")) { ireg = (uint *)get_property(np, "reg", &ilen); - if (ireg && ireg[0] == boot_cpuid_phys) { + if (ireg && ireg[0] == get_hard_smp_processor_id(boot_cpuid)) { ireg = (uint *)get_property(np, "ibm,ppc-interrupt-gserver#s", &ilen); i = ilen / sizeof(int); @@ -536,11 +537,11 @@ nextnode: of_node_put(np); } - if (platform_is_lpar()) + if (firmware_has_feature(FW_FEATURE_LPAR)) ops = &pSeriesLP_ops; else { #ifdef CONFIG_SMP - for_each_cpu(i) { + for_each_possible_cpu(i) { int hard_id; /* FIXME: Do this dynamically! --RR */ |
