diff options
Diffstat (limited to 'arch/powerpc/platforms')
31 files changed, 782 insertions, 314 deletions
diff --git a/arch/powerpc/platforms/44x/warp.c b/arch/powerpc/platforms/44x/warp.c index c511880..0362c88 100644 --- a/arch/powerpc/platforms/44x/warp.c +++ b/arch/powerpc/platforms/44x/warp.c @@ -16,6 +16,7 @@ #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/of_gpio.h> +#include <linux/of_i2c.h> #include <asm/machdep.h> #include <asm/prom.h> @@ -43,7 +44,13 @@ static int __init warp_probe(void) { unsigned long root = of_get_flat_dt_root(); - return of_flat_dt_is_compatible(root, "pika,warp"); + if (!of_flat_dt_is_compatible(root, "pika,warp")) + return 0; + + /* For __dma_alloc_coherent */ + ISA_DMA_THRESHOLD = ~0L; + + return 1; } define_machine(warp) { @@ -59,7 +66,6 @@ define_machine(warp) { static u32 post_info; -/* I am not sure this is the best place for this... */ static int __init warp_post_info(void) { struct device_node *np; @@ -188,9 +194,9 @@ static int pika_setup_leds(void) return 0; } -static void pika_setup_critical_temp(struct i2c_client *client) +static void pika_setup_critical_temp(struct device_node *np, + struct i2c_client *client) { - struct device_node *np; int irq, rc; /* Do this before enabling critical temp interrupt since we @@ -202,14 +208,7 @@ static void pika_setup_critical_temp(struct i2c_client *client) i2c_smbus_write_byte_data(client, 2, 65); /* Thigh */ i2c_smbus_write_byte_data(client, 3, 0); /* Tlow */ - np = of_find_compatible_node(NULL, NULL, "adi,ad7414"); - if (np == NULL) { - printk(KERN_ERR __FILE__ ": Unable to find ad7414\n"); - return; - } - irq = irq_of_parse_and_map(np, 0); - of_node_put(np); if (irq == NO_IRQ) { printk(KERN_ERR __FILE__ ": Unable to get ad7414 irq\n"); return; @@ -238,32 +237,24 @@ static inline void pika_dtm_check_fan(void __iomem *fpga) static int pika_dtm_thread(void __iomem *fpga) { - struct i2c_adapter *adap; + struct device_node *np; struct i2c_client *client; - /* We loop in case either driver was compiled as a module and - * has not been insmoded yet. - */ - while (!(adap = i2c_get_adapter(0))) { - set_current_state(TASK_INTERRUPTIBLE); - schedule_timeout(HZ); - } - - while (1) { - list_for_each_entry(client, &adap->clients, list) - if (client->addr == 0x4a) - goto found_it; + np = of_find_compatible_node(NULL, NULL, "adi,ad7414"); + if (np == NULL) + return -ENOENT; - set_current_state(TASK_INTERRUPTIBLE); - schedule_timeout(HZ); + client = of_find_i2c_device_by_node(np); + if (client == NULL) { + of_node_put(np); + return -ENOENT; } -found_it: - pika_setup_critical_temp(client); + pika_setup_critical_temp(np, client); - i2c_put_adapter(adap); + of_node_put(np); - printk(KERN_INFO "PIKA DTM thread running.\n"); + printk(KERN_INFO "Warp DTM thread running.\n"); while (!kthread_should_stop()) { int val; @@ -285,7 +276,6 @@ found_it: return 0; } - static int __init pika_dtm_start(void) { struct task_struct *dtm_thread; diff --git a/arch/powerpc/platforms/512x/clock.c b/arch/powerpc/platforms/512x/clock.c index 1bcff94..84544d0 100644 --- a/arch/powerpc/platforms/512x/clock.c +++ b/arch/powerpc/platforms/512x/clock.c @@ -24,7 +24,7 @@ #include <linux/io.h> #include <linux/of_platform.h> -#include <asm/mpc512x.h> +#include <asm/mpc5xxx.h> #include <asm/clk_interface.h> #undef CLK_DEBUG @@ -83,13 +83,13 @@ static void dump_clocks(void) mutex_lock(&clocks_mutex); printk(KERN_INFO "CLOCKS:\n"); list_for_each_entry(p, &clocks, node) { - printk(KERN_INFO " %s %ld", p->name, p->rate); + pr_info(" %s=%ld", p->name, p->rate); if (p->parent) - printk(KERN_INFO " %s %ld", p->parent->name, + pr_cont(" %s=%ld", p->parent->name, p->parent->rate); if (p->flags & CLK_HAS_CTRL) - printk(KERN_INFO " reg/bit %d/%d", p->reg, p->bit); - printk("\n"); + pr_cont(" reg/bit=%d/%d", p->reg, p->bit); + pr_cont("\n"); } mutex_unlock(&clocks_mutex); } diff --git a/arch/powerpc/platforms/512x/mpc512x.h b/arch/powerpc/platforms/512x/mpc512x.h index 9c03693..22a5352 100644 --- a/arch/powerpc/platforms/512x/mpc512x.h +++ b/arch/powerpc/platforms/512x/mpc512x.h @@ -11,7 +11,6 @@ #ifndef __MPC512X_H__ #define __MPC512X_H__ -extern unsigned long mpc512x_find_ips_freq(struct device_node *node); extern void __init mpc512x_init_IRQ(void); void __init mpc512x_declare_of_platform_devices(void); #endif /* __MPC512X_H__ */ diff --git a/arch/powerpc/platforms/512x/mpc512x_shared.c b/arch/powerpc/platforms/512x/mpc512x_shared.c index d8cd579..434d683 100644 --- a/arch/powerpc/platforms/512x/mpc512x_shared.c +++ b/arch/powerpc/platforms/512x/mpc512x_shared.c @@ -24,29 +24,6 @@ #include "mpc512x.h" -unsigned long -mpc512x_find_ips_freq(struct device_node *node) -{ - struct device_node *np; - const unsigned int *p_ips_freq = NULL; - - of_node_get(node); - while (node) { - p_ips_freq = of_get_property(node, "bus-frequency", NULL); - if (p_ips_freq) - break; - - np = of_get_parent(node); - of_node_put(node); - node = np; - } - if (node) - of_node_put(node); - - return p_ips_freq ? *p_ips_freq : 0; -} -EXPORT_SYMBOL(mpc512x_find_ips_freq); - void __init mpc512x_init_IRQ(void) { struct device_node *np; diff --git a/arch/powerpc/platforms/52xx/mpc52xx_common.c b/arch/powerpc/platforms/52xx/mpc52xx_common.c index 8e3dd5a..a46bad0 100644 --- a/arch/powerpc/platforms/52xx/mpc52xx_common.c +++ b/arch/powerpc/platforms/52xx/mpc52xx_common.c @@ -47,36 +47,6 @@ static DEFINE_SPINLOCK(mpc52xx_lock); static struct mpc52xx_gpt __iomem *mpc52xx_wdt; static struct mpc52xx_cdm __iomem *mpc52xx_cdm; -/** - * mpc52xx_find_ipb_freq - Find the IPB bus frequency for a device - * @node: device node - * - * Returns IPB bus frequency, or 0 if the bus frequency cannot be found. - */ -unsigned int -mpc52xx_find_ipb_freq(struct device_node *node) -{ - struct device_node *np; - const unsigned int *p_ipb_freq = NULL; - - of_node_get(node); - while (node) { - p_ipb_freq = of_get_property(node, "bus-frequency", NULL); - if (p_ipb_freq) - break; - - np = of_get_parent(node); - of_node_put(node); - node = np; - } - if (node) - of_node_put(node); - - return p_ipb_freq ? *p_ipb_freq : 0; -} -EXPORT_SYMBOL(mpc52xx_find_ipb_freq); - - /* * Configure the XLB arbiter settings to match what Linux expects. */ @@ -221,7 +191,7 @@ unsigned int mpc52xx_get_xtal_freq(struct device_node *node) if (!mpc52xx_cdm) return 0; - freq = mpc52xx_find_ipb_freq(node); + freq = mpc5xxx_get_bus_frequency(node); if (!freq) return 0; diff --git a/arch/powerpc/platforms/83xx/Kconfig b/arch/powerpc/platforms/83xx/Kconfig index 437d29a..083ebee 100644 --- a/arch/powerpc/platforms/83xx/Kconfig +++ b/arch/powerpc/platforms/83xx/Kconfig @@ -96,6 +96,13 @@ config ASP834x This enables support for the Analogue & Micro ASP 83xx board. +config KMETER1 + bool "Keymile KMETER1" + select DEFAULT_UIMAGE + select QUICC_ENGINE + help + This enables support for the Keymile KMETER1 board. + endif diff --git a/arch/powerpc/platforms/83xx/Makefile b/arch/powerpc/platforms/83xx/Makefile index 051777c..e139c36 100644 --- a/arch/powerpc/platforms/83xx/Makefile +++ b/arch/powerpc/platforms/83xx/Makefile @@ -15,3 +15,4 @@ obj-$(CONFIG_MPC837x_MDS) += mpc837x_mds.o obj-$(CONFIG_SBC834x) += sbc834x.o obj-$(CONFIG_MPC837x_RDB) += mpc837x_rdb.o obj-$(CONFIG_ASP834x) += asp834x.o +obj-$(CONFIG_KMETER1) += kmeter1.o diff --git a/arch/powerpc/platforms/83xx/kmeter1.c b/arch/powerpc/platforms/83xx/kmeter1.c new file mode 100644 index 0000000..903acfd --- /dev/null +++ b/arch/powerpc/platforms/83xx/kmeter1.c @@ -0,0 +1,191 @@ +/* + * Copyright 2008 DENX Software Engineering GmbH + * Author: Heiko Schocher <hs@denx.de> + * + * Description: + * Keymile KMETER1 board specific routines. + * + * 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/stddef.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/reboot.h> +#include <linux/pci.h> +#include <linux/kdev_t.h> +#include <linux/major.h> +#include <linux/console.h> +#include <linux/delay.h> +#include <linux/seq_file.h> +#include <linux/root_dev.h> +#include <linux/initrd.h> +#include <linux/of_platform.h> +#include <linux/of_device.h> + +#include <asm/system.h> +#include <asm/atomic.h> +#include <asm/time.h> +#include <asm/io.h> +#include <asm/machdep.h> +#include <asm/ipic.h> +#include <asm/irq.h> +#include <asm/prom.h> +#include <asm/udbg.h> +#include <sysdev/fsl_soc.h> +#include <sysdev/fsl_pci.h> +#include <asm/qe.h> +#include <asm/qe_ic.h> + +#include "mpc83xx.h" + +#define SVR_REV(svr) (((svr) >> 0) & 0xFFFF) /* Revision field */ +/* ************************************************************************ + * + * Setup the architecture + * + */ +static void __init kmeter1_setup_arch(void) +{ + struct device_node *np; + + if (ppc_md.progress) + ppc_md.progress("kmeter1_setup_arch()", 0); + +#ifdef CONFIG_PCI + for_each_compatible_node(np, "pci", "fsl,mpc8349-pci") + mpc83xx_add_bridge(np); +#endif + +#ifdef CONFIG_QUICC_ENGINE + qe_reset(); + + np = of_find_node_by_name(NULL, "par_io"); + if (np != NULL) { + par_io_init(np); + of_node_put(np); + + for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;) + par_io_of_config(np); + } + + np = of_find_compatible_node(NULL, "network", "ucc_geth"); + if (np != NULL) { + uint svid; + + /* handle mpc8360ea rev.2.1 erratum 2: RGMII Timing */ + svid = mfspr(SPRN_SVR); + if (SVR_REV(svid) == 0x0021) { + struct device_node *np_par; + struct resource res; + void __iomem *base; + int ret; + + np_par = of_find_node_by_name(NULL, "par_io"); + if (np_par == NULL) { + printk(KERN_WARNING "%s couldn;t find par_io node\n", + __func__); + return; + } + /* Map Parallel I/O ports registers */ + ret = of_address_to_resource(np_par, 0, &res); + if (ret) { + printk(KERN_WARNING "%s couldn;t map par_io registers\n", + __func__); + return; + } + base = ioremap(res.start, res.end - res.start + 1); + + /* + * IMMR + 0x14A8[4:5] = 11 (clk delay for UCC 2) + * IMMR + 0x14A8[18:19] = 11 (clk delay for UCC 1) + */ + setbits32((base + 0xa8), 0x0c003000); + + /* + * IMMR + 0x14AC[20:27] = 10101010 + * (data delay for both UCC's) + */ + clrsetbits_be32((base + 0xac), 0xff0, 0xaa0); + iounmap(base); + of_node_put(np_par); + } + of_node_put(np); + } +#endif /* CONFIG_QUICC_ENGINE */ +} + +static struct of_device_id kmeter_ids[] = { + { .type = "soc", }, + { .compatible = "soc", }, + { .compatible = "simple-bus", }, + { .type = "qe", }, + { .compatible = "fsl,qe", }, + {}, +}; + +static int __init kmeter_declare_of_platform_devices(void) +{ + /* Publish the QE devices */ + of_platform_bus_probe(NULL, kmeter_ids, NULL); + + return 0; +} +machine_device_initcall(kmeter1, kmeter_declare_of_platform_devices); + +static void __init kmeter1_init_IRQ(void) +{ + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "fsl,pq2pro-pic"); + if (!np) { + np = of_find_node_by_type(NULL, "ipic"); + if (!np) + return; + } + + ipic_init(np, 0); + + /* Initialize the default interrupt mapping priorities, + * in case the boot rom changed something on us. + */ + ipic_set_default_priority(); + of_node_put(np); + +#ifdef CONFIG_QUICC_ENGINE + np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic"); + if (!np) { + np = of_find_node_by_type(NULL, "qeic"); + if (!np) + return; + } + qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic); + of_node_put(np); +#endif /* CONFIG_QUICC_ENGINE */ +} + +/* + * Called very early, MMU is off, device-tree isn't unflattened + */ +static int __init kmeter1_probe(void) +{ + unsigned long root = of_get_flat_dt_root(); + + return of_flat_dt_is_compatible(root, "keymile,KMETER1"); +} + +define_machine(kmeter1) { + .name = "KMETER1", + .probe = kmeter1_probe, + .setup_arch = kmeter1_setup_arch, + .init_IRQ = kmeter1_init_IRQ, + .get_irq = ipic_get_irq, + .restart = mpc83xx_restart, + .time_init = mpc83xx_time_init, + .calibrate_decr = generic_calibrate_decr, + .progress = udbg_progress, +}; diff --git a/arch/powerpc/platforms/83xx/mpc83xx.h b/arch/powerpc/platforms/83xx/mpc83xx.h index 83cfe51..d1dc5b0 100644 --- a/arch/powerpc/platforms/83xx/mpc83xx.h +++ b/arch/powerpc/platforms/83xx/mpc83xx.h @@ -22,8 +22,8 @@ /* system i/o configuration register low */ #define MPC83XX_SICRL_OFFS 0x114 #define MPC834X_SICRL_USB_MASK 0x60000000 -#define MPC834X_SICRL_USB0 0x40000000 -#define MPC834X_SICRL_USB1 0x20000000 +#define MPC834X_SICRL_USB0 0x20000000 +#define MPC834X_SICRL_USB1 0x40000000 #define MPC831X_SICRL_USB_MASK 0x00000c00 #define MPC831X_SICRL_USB_ULPI 0x00000800 #define MPC8315_SICRL_USB_MASK 0x000000fc diff --git a/arch/powerpc/platforms/83xx/usb.c b/arch/powerpc/platforms/83xx/usb.c index 11e1fac..3ba4bb7 100644 --- a/arch/powerpc/platforms/83xx/usb.c +++ b/arch/powerpc/platforms/83xx/usb.c @@ -47,25 +47,25 @@ int mpc834x_usb_cfg(void) sccr |= MPC83XX_SCCR_USB_DRCM_11; /* 1:3 */ prop = of_get_property(np, "phy_type", NULL); + port1_is_dr = 1; if (prop && (!strcmp(prop, "utmi") || !strcmp(prop, "utmi_wide"))) { sicrl |= MPC834X_SICRL_USB0 | MPC834X_SICRL_USB1; sicrh |= MPC834X_SICRH_USB_UTMI; - port1_is_dr = 1; + port0_is_dr = 1; } else if (prop && !strcmp(prop, "serial")) { dr_mode = of_get_property(np, "dr_mode", NULL); if (dr_mode && !strcmp(dr_mode, "otg")) { sicrl |= MPC834X_SICRL_USB0 | MPC834X_SICRL_USB1; - port1_is_dr = 1; + port0_is_dr = 1; } else { - sicrl |= MPC834X_SICRL_USB0; + sicrl |= MPC834X_SICRL_USB1; } } else if (prop && !strcmp(prop, "ulpi")) { - sicrl |= MPC834X_SICRL_USB0; + sicrl |= MPC834X_SICRL_USB1; } else { printk(KERN_WARNING "834x USB PHY type not supported\n"); } - port0_is_dr = 1; of_node_put(np); } np = of_find_compatible_node(NULL, NULL, "fsl-usb2-mph"); diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig index 43d385c..a9b4166 100644 --- a/arch/powerpc/platforms/85xx/Kconfig +++ b/arch/powerpc/platforms/85xx/Kconfig @@ -35,12 +35,14 @@ config MPC85xx_MDS select DEFAULT_UIMAGE select PHYLIB select HAS_RAPIDIO + select SWIOTLB help This option enables support for the MPC85xx MDS board config MPC8536_DS bool "Freescale MPC8536 DS" select DEFAULT_UIMAGE + select SWIOTLB help This option enables support for the MPC8536 DS board @@ -49,6 +51,7 @@ config MPC85xx_DS select PPC_I8259 select DEFAULT_UIMAGE select FSL_ULI1575 + select SWIOTLB help This option enables support for the MPC85xx DS (MPC8544 DS) board @@ -64,6 +67,16 @@ config KSI8560 help This option enables support for the Emerson KSI8560 board +config XES_MPC85xx + bool "X-ES single-board computer" + select DEFAULT_UIMAGE + help + This option enables support for the various single-board + computers from Extreme Engineering Solutions (X-ES) based on + Freescale MPC85xx processors. + Manufacturer: Extreme Engineering Solutions, Inc. + URL: <http://www.xes-inc.com/> + config STX_GP3 bool "Silicon Turnkey Express GP3" help diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile index a857b35..835733f 100644 --- a/arch/powerpc/platforms/85xx/Makefile +++ b/arch/powerpc/platforms/85xx/Makefile @@ -15,3 +15,4 @@ obj-$(CONFIG_SBC8560) += sbc8560.o obj-$(CONFIG_SBC8548) += sbc8548.o obj-$(CONFIG_SOCRATES) += socrates.o socrates_fpga_pic.o obj-$(CONFIG_KSI8560) += ksi8560.o +obj-$(CONFIG_XES_MPC85xx) += xes_mpc85xx.o
\ No newline at end of file diff --git a/arch/powerpc/platforms/85xx/mpc8536_ds.c b/arch/powerpc/platforms/85xx/mpc8536_ds.c index 63efca2..055ff41 100644 --- a/arch/powerpc/platforms/85xx/mpc8536_ds.c +++ b/arch/powerpc/platforms/85xx/mpc8536_ds.c @@ -17,6 +17,7 @@ #include <linux/seq_file.h> #include <linux/interrupt.h> #include <linux/of_platform.h> +#include <linux/lmb.h> #include <asm/system.h> #include <asm/time.h> @@ -26,6 +27,7 @@ #include <asm/prom.h> #include <asm/udbg.h> #include <asm/mpic.h> +#include <asm/swiotlb.h> #include <sysdev/fsl_soc.h> #include <sysdev/fsl_pci.h> @@ -65,7 +67,9 @@ static void __init mpc8536_ds_setup_arch(void) { #ifdef CONFIG_PCI struct device_node *np; + struct pci_controller *hose; #endif + dma_addr_t max = 0xffffffff; if (ppc_md.progress) ppc_md.progress("mpc8536_ds_setup_arch()", 0); @@ -80,11 +84,22 @@ static void __init mpc8536_ds_setup_arch(void) fsl_add_bridge(np, 1); else fsl_add_bridge(np, 0); + + hose = pci_find_hose_for_OF_device(np); + max = min(max, hose->dma_window_base_cur + + hose->dma_window_size); } } #endif +#ifdef CONFIG_SWIOTLB + if (lmb_end_of_DRAM() > max) { + ppc_swiotlb_enable = 1; + set_pci_dma_ops(&swiotlb_pci_dma_ops); + } +#endif + printk("MPC8536 DS board from Freescale Semiconductor\n"); } @@ -102,6 +117,8 @@ static int __init mpc8536_ds_publish_devices(void) } machine_device_initcall(mpc8536_ds, mpc8536_ds_publish_devices); +machine_arch_initcall(mpc8536_ds, swiotlb_setup_bus_notifier); + /* * Called very early, device-tree isn't unflattened */ diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ds.c b/arch/powerpc/platforms/85xx/mpc85xx_ds.c index 53d5851..849c0ac 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_ds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_ds.c @@ -20,6 +20,7 @@ #include <linux/seq_file.h> #include <linux/interrupt.h> #include <linux/of_platform.h> +#include <linux/lmb.h> #include <asm/system.h> #include <asm/time.h> @@ -30,6 +31,7 @@ #include <asm/udbg.h> #include <asm/mpic.h> #include <asm/i8259.h> +#include <asm/swiotlb.h> #include <sysdev/fsl_soc.h> #include <sysdev/fsl_pci.h> @@ -155,7 +157,9 @@ static void __init mpc85xx_ds_setup_arch(void) { #ifdef CONFIG_PCI struct device_node *np; + struct pci_controller *hose; #endif + dma_addr_t max = 0xffffffff; if (ppc_md.progress) ppc_md.progress("mpc85xx_ds_setup_arch()", 0); @@ -171,6 +175,10 @@ static void __init mpc85xx_ds_setup_arch(void) fsl_add_bridge(np, 1); else fsl_add_bridge(np, 0); + + hose = pci_find_hose_for_OF_device(np); + max = min(max, hose->dma_window_base_cur + + hose->dma_window_size); } } @@ -181,6 +189,13 @@ static void __init mpc85xx_ds_setup_arch(void) mpc85xx_smp_init(); #endif +#ifdef CONFIG_SWIOTLB + if (lmb_end_of_DRAM() > max) { + ppc_swiotlb_enable = 1; + set_pci_dma_ops(&swiotlb_pci_dma_ops); + } +#endif + printk("MPC85xx DS board from Freescale Semiconductor\n"); } @@ -217,6 +232,10 @@ machine_device_initcall(mpc8544_ds, mpc85xxds_publish_devices); machine_device_initcall(mpc8572_ds, mpc85xxds_publish_devices); machine_device_initcall(p2020_ds, mpc85xxds_publish_devices); +machine_arch_initcall(mpc8544_ds, swiotlb_setup_bus_notifier); +machine_arch_initcall(mpc8572_ds, swiotlb_setup_bus_notifier); +machine_arch_initcall(p2020_ds, swiotlb_setup_bus_notifier); + /* * Called very early, device-tree isn't unflattened */ diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c b/arch/powerpc/platforms/85xx/mpc85xx_mds.c index b2c0a43..60ed9c0 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c @@ -33,6 +33,7 @@ #include <linux/of_platform.h> #include <linux/of_device.h> #include <linux/phy.h> +#include <linux/lmb.h> #include <asm/system.h> #include <asm/atomic.h> @@ -49,6 +50,7 @@ #include <asm/qe.h> #include <asm/qe_ic.h> #include <asm/mpic.h> +#include <asm/swiotlb.h> #undef DEBUG #ifdef DEBUG @@ -155,6 +157,10 @@ static void __init mpc85xx_mds_setup_arch(void) { struct device_node *np; static u8 __iomem *bcsr_regs = NULL; +#ifdef CONFIG_PCI + struct pci_controller *hose; +#endif + dma_addr_t max = 0xffffffff; if (ppc_md.progress) ppc_md.progress("mpc85xx_mds_setup_arch()", 0); @@ -179,6 +185,10 @@ static void __init mpc85xx_mds_setup_arch(void) fsl_add_bridge(np, 1); else fsl_add_bridge(np, 0); + + hose = pci_find_hose_for_OF_device(np); + max = min(max, hose->dma_window_base_cur + + hose->dma_window_size); } } #endif @@ -227,6 +237,13 @@ static void __init mpc85xx_mds_setup_arch(void) iounmap(bcsr_regs); } #endif /* CONFIG_QUICC_ENGINE */ + +#ifdef CONFIG_SWIOTLB + if (lmb_end_of_DRAM() > max) { + ppc_swiotlb_enable = 1; + set_pci_dma_ops(&swiotlb_pci_dma_ops); + } +#endif } @@ -268,6 +285,7 @@ static struct of_device_id mpc85xx_ids[] = { { .type = "qe", }, { .compatible = "fsl,qe", }, { .compatible = "gianfar", }, + { .compatible = "fsl,rapidio-delta", }, {}, }; @@ -281,6 +299,9 @@ static int __init mpc85xx_publish_devices(void) machine_device_initcall(mpc8568_mds, mpc85xx_publish_devices); machine_device_initcall(mpc8569_mds, mpc85xx_publish_devices); +machine_arch_initcall(mpc8568_mds, swiotlb_setup_bus_notifier); +machine_arch_initcall(mpc8569_mds, swiotlb_setup_bus_notifier); + static void __init mpc85xx_mds_pic_init(void) { struct mpic *mpic; diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c index cc0b0db..62c592ede6 100644 --- a/arch/powerpc/platforms/85xx/smp.c +++ b/arch/powerpc/platforms/85xx/smp.c @@ -52,20 +52,19 @@ smp_85xx_kick_cpu(int nr) pr_debug("smp_85xx_kick_cpu: kick CPU #%d\n", nr); - local_irq_save(flags); - np = of_get_cpu_node(nr, NULL); cpu_rel_addr = of_get_property(np, "cpu-release-addr", NULL); if (cpu_rel_addr == NULL) { printk(KERN_ERR "No cpu-release-addr for cpu %d\n", nr); - local_irq_restore(flags); return; } /* Map the spin table */ bptr_vaddr = ioremap(*cpu_rel_addr, SIZE_BOOT_ENTRY); + local_irq_save(flags); + out_be32(bptr_vaddr + BOOT_ENTRY_PIR, nr); out_be32(bptr_vaddr + BOOT_ENTRY_ADDR_LOWER, __pa(__early_start)); @@ -73,10 +72,10 @@ smp_85xx_kick_cpu(int nr) while ((__secondary_hold_acknowledge != nr) && (++n < 1000)) mdelay(1); - iounmap(bptr_vaddr); - local_irq_restore(flags); + iounmap(bptr_vaddr); + pr_debug("waited %d msecs for CPU #%d.\n", n, nr); } diff --git a/arch/powerpc/platforms/85xx/socrates.c b/arch/powerpc/platforms/85xx/socrates.c index d0e8443..747d8fb 100644 --- a/arch/powerpc/platforms/85xx/socrates.c +++ b/arch/powerpc/platforms/85xx/socrates.c @@ -102,10 +102,11 @@ static struct of_device_id __initdata socrates_of_bus_ids[] = { {}, }; -static void __init socrates_init(void) +static int __init socrates_publish_devices(void) { - of_platform_bus_probe(NULL, socrates_of_bus_ids, NULL); + return of_platform_bus_probe(NULL, socrates_of_bus_ids, NULL); } +machine_device_initcall(socrates, socrates_publish_devices); /* * Called very early, device-tree isn't unflattened @@ -124,7 +125,6 @@ define_machine(socrates) { .name = "Socrates", .probe = socrates_probe, .setup_arch = socrates_setup_arch, - .init = socrates_init, .init_IRQ = socrates_pic_init, .get_irq = mpic_get_irq, .restart = fsl_rstcr_restart, diff --git a/arch/powerpc/platforms/85xx/xes_mpc85xx.c b/arch/powerpc/platforms/85xx/xes_mpc85xx.c new file mode 100644 index 0000000..1b42605 --- /dev/null +++ b/arch/powerpc/platforms/85xx/xes_mpc85xx.c @@ -0,0 +1,281 @@ +/* + * Copyright (C) 2009 Extreme Engineering Solutions, Inc. + * + * X-ES board-specific functionality + * + * Based on mpc85xx_ds code from Freescale Semiconductor, Inc. + * + * Author: Nate Case <ncase@xes-inc.com> + * + * This is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/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/interrupt.h> +#include <linux/of_platform.h> + +#include <asm/system.h> +#include <asm/time.h> +#include <asm/machdep.h> +#include <asm/pci-bridge.h> +#include <mm/mmu_decl.h> +#include <asm/prom.h> +#include <asm/udbg.h> +#include <asm/mpic.h> + +#include <sysdev/fsl_soc.h> +#include <sysdev/fsl_pci.h> + +/* A few bit definitions needed for fixups on some boards */ +#define MPC85xx_L2CTL_L2E 0x80000000 /* L2 enable */ +#define MPC85xx_L2CTL_L2I 0x40000000 /* L2 flash invalidate */ +#define MPC85xx_L2CTL_L2SIZ_MASK 0x30000000 /* L2 SRAM size (R/O) */ + +void __init xes_mpc85xx_pic_init(void) +{ + struct mpic *mpic; + struct resource r; + struct device_node *np; + + np = of_find_node_by_type(NULL, "open-pic"); + if (np == NULL) { + printk(KERN_ERR "Could not find open-pic node\n"); + return; + } + + if (of_address_to_resource(np, 0, &r)) { + printk(KERN_ERR "Failed to map mpic register space\n"); + of_node_put(np); + return; + } + + mpic = mpic_alloc(np, r.start, + MPIC_PRIMARY | MPIC_WANTS_RESET | + MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS, + 0, 256, " OpenPIC "); + BUG_ON(mpic == NULL); + of_node_put(np); + + mpic_init(mpic); +} + +static void xes_mpc85xx_configure_l2(void __iomem *l2_base) +{ + volatile uint32_t ctl, tmp; + + asm volatile("msync; isync"); + tmp = in_be32(l2_base); + + /* + * xMon may have enabled part of L2 as SRAM, so we need to set it + * up for all cache mode just to be safe. + */ + printk(KERN_INFO "xes_mpc85xx: Enabling L2 as cache\n"); + + ctl = MPC85xx_L2CTL_L2E | MPC85xx_L2CTL_L2I; + if (machine_is_compatible("MPC8540") || + machine_is_compatible("MPC8560")) + /* + * Assume L2 SRAM is used fully for cache, so set + * L2BLKSZ (bits 4:5) to match L2SIZ (bits 2:3). + */ + ctl |= (tmp & MPC85xx_L2CTL_L2SIZ_MASK) >> 2; + + asm volatile("msync; isync"); + out_be32(l2_base, ctl); + asm volatile("msync; isync"); +} + +static void xes_mpc85xx_fixups(void) +{ + struct device_node *np; + int err; + + /* + * Legacy xMon firmware on some X-ES boards does not enable L2 + * as cache. We must ensure that they get enabled here. + */ + for_each_node_by_name(np, "l2-cache-controller") { + struct resource r[2]; + void __iomem *l2_base; + + /* Only MPC8548, MPC8540, and MPC8560 boards are affected */ + if (!of_device_is_compatible(np, + "fsl,mpc8548-l2-cache-controller") && + !of_device_is_compatible(np, + "fsl,mpc8540-l2-cache-controller") && + !of_device_is_compatible(np, + "fsl,mpc8560-l2-cache-controller")) + continue; + + err = of_address_to_resource(np, 0, &r[0]); + if (err) { + printk(KERN_WARNING "xes_mpc85xx: Could not get " + "resource for device tree node '%s'", + np->full_name); + continue; + } + + l2_base = ioremap(r[0].start, r[0].end - r[0].start + 1); + + xes_mpc85xx_configure_l2(l2_base); + } +} + +#ifdef CONFIG_PCI +static int primary_phb_addr; +#endif + +/* + * Setup the architecture + */ +#ifdef CONFIG_SMP +extern void __init mpc85xx_smp_init(void); +#endif +static void __init xes_mpc85xx_setup_arch(void) +{ +#ifdef CONFIG_PCI + struct device_node *np; +#endif + struct device_node *root; + const char *model = "Unknown"; + + root = of_find_node_by_path("/"); + if (root == NULL) + return; + + model = of_get_property(root, "model", NULL); + + printk(KERN_INFO "X-ES MPC85xx-based single-board computer: %s\n", + model + strlen("xes,")); + + xes_mpc85xx_fixups(); + +#ifdef CONFIG_PCI + for_each_node_by_type(np, "pci") { + if (of_device_is_compatible(np, "fsl,mpc8540-pci") || + of_device_is_compatible(np, "fsl,mpc8548-pcie")) { + struct resource rsrc; + of_address_to_resource(np, 0, &rsrc); + if ((rsrc.start & 0xfffff) == primary_phb_addr) + fsl_add_bridge(np, 1); + else + fsl_add_bridge(np, 0); + } + } +#endif + +#ifdef CONFIG_SMP + mpc85xx_smp_init(); +#endif +} + +static struct of_device_id __initdata xes_mpc85xx_ids[] = { + { .type = "soc", }, + { .compatible = "soc", }, + { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, + {}, +}; + +static int __init xes_mpc85xx_publish_devices(void) +{ + return of_platform_bus_probe(NULL, xes_mpc85xx_ids, NULL); +} +machine_device_initcall(xes_mpc8572, xes_mpc85xx_publish_devices); +machine_device_initcall(xes_mpc8548, xes_mpc85xx_publish_devices); +machine_device_initcall(xes_mpc8540, xes_mpc85xx_publish_devices); + +/* + * Called very early, device-tree isn't unflattened + */ +static int __init xes_mpc8572_probe(void) +{ + unsigned long root = of_get_flat_dt_root(); + + if (of_flat_dt_is_compatible(root, "xes,MPC8572")) { +#ifdef CONFIG_PCI + primary_phb_addr = 0x8000; +#endif + return 1; + } else { + return 0; + } +} + +static int __init xes_mpc8548_probe(void) +{ + unsigned long root = of_get_flat_dt_root(); + + if (of_flat_dt_is_compatible(root, "xes,MPC8548")) { +#ifdef CONFIG_PCI + primary_phb_addr = 0xb000; +#endif + return 1; + } else { + return 0; + } +} + +static int __init xes_mpc8540_probe(void) +{ + unsigned long root = of_get_flat_dt_root(); + + if (of_flat_dt_is_compatible(root, "xes,MPC8540")) { +#ifdef CONFIG_PCI + primary_phb_addr = 0xb000; +#endif + return 1; + } else { + return 0; + } +} + +define_machine(xes_mpc8572) { + .name = "X-ES MPC8572", + .probe = xes_mpc8572_probe, + .setup_arch = xes_mpc85xx_setup_arch, + .init_IRQ = xes_mpc85xx_pic_init, +#ifdef CONFIG_PCI + .pcibios_fixup_bus = fsl_pcibios_fixup_bus, +#endif + .get_irq = mpic_get_irq, + .restart = fsl_rstcr_restart, + .calibrate_decr = generic_calibrate_decr, + .progress = udbg_progress, +}; + +define_machine(xes_mpc8548) { + .name = "X-ES MPC8548", + .probe = xes_mpc8548_probe, + .setup_arch = xes_mpc85xx_setup_arch, + .init_IRQ = xes_mpc85xx_pic_init, +#ifdef CONFIG_PCI + .pcibios_fixup_bus = fsl_pcibios_fixup_bus, +#endif + .get_irq = mpic_get_irq, + .restart = fsl_rstcr_restart, + .calibrate_decr = generic_calibrate_decr, + .progress = udbg_progress, +}; + +define_machine(xes_mpc8540) { + .name = "X-ES MPC8540", + .probe = xes_mpc8540_probe, + .setup_arch = xes_mpc85xx_setup_arch, + .init_IRQ = xes_mpc85xx_pic_init, +#ifdef CONFIG_PCI + .pcibios_fixup_bus = fsl_pcibios_fixup_bus, +#endif + .get_irq = mpic_get_irq, + .restart = fsl_rstcr_restart, + .calibrate_decr = generic_calibrate_decr, + .progress = udbg_progress, +}; diff --git a/arch/powerpc/platforms/86xx/Kconfig b/arch/powerpc/platforms/86xx/Kconfig index fdaf4dd..9c7b64a 100644 --- a/arch/powerpc/platforms/86xx/Kconfig +++ b/arch/powerpc/platforms/86xx/Kconfig @@ -15,6 +15,7 @@ config MPC8641_HPCN select DEFAULT_UIMAGE select FSL_ULI1575 select HAS_RAPIDIO + select SWIOTLB help This option enables support for the MPC8641 HPCN board. diff --git a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c index 51eec0c..627908a 100644 --- a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c +++ b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c @@ -37,6 +37,7 @@ #include <linux/of_platform.h> #include <sysdev/fsl_pci.h> #include <sysdev/fsl_soc.h> +#include <sysdev/simple_gpio.h> #include "mpc86xx.h" @@ -51,6 +52,9 @@ static struct of_device_id __initdata mpc8610_ids[] = { static int __init mpc8610_declare_of_platform_devices(void) { + /* Firstly, register PIXIS GPIOs. */ + simple_gpiochip_init("fsl,fpga-pixis-gpio-bank"); + /* Without this call, the SSI device driver won't get probed. */ of_platform_bus_probe(NULL, mpc8610_ids, NULL); diff --git a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c index 7e9e83c..6632702 100644 --- a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c +++ b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c @@ -19,6 +19,7 @@ #include <linux/delay.h> #include <linux/seq_file.h> #include <linux/of_platform.h> +#include <linux/lmb.h> #include <asm/system.h> #include <asm/time.h> @@ -27,6 +28,7 @@ #include <asm/prom.h> #include <mm/mmu_decl.h> #include <asm/udbg.h> +#include <asm/swiotlb.h> #include <asm/mpic.h> @@ -70,7 +72,9 @@ mpc86xx_hpcn_setup_arch(void) { #ifdef CONFIG_PCI struct device_node *np; + struct pci_controller *hose; #endif + dma_addr_t max = 0xffffffff; if (ppc_md.progress) ppc_md.progress("mpc86xx_hpcn_setup_arch()", 0); @@ -83,6 +87,9 @@ mpc86xx_hpcn_setup_arch(void) fsl_add_bridge(np, 1); else fsl_add_bridge(np, 0); + hose = pci_find_hose_for_OF_device(np); + max = min(max, hose->dma_window_base_cur + + hose->dma_window_size); } ppc_md.pci_exclude_device = mpc86xx_exclude_device; @@ -94,6 +101,13 @@ mpc86xx_hpcn_setup_arch(void) #ifdef CONFIG_SMP mpc86xx_smp_init(); #endif + +#ifdef CONFIG_SWIOTLB + if (lmb_end_of_DRAM() > max) { + ppc_swiotlb_enable = 1; + set_pci_dma_ops(&swiotlb_pci_dma_ops); + } +#endif } @@ -158,6 +172,7 @@ static int __init declare_of_platform_devices(void) return 0; } machine_device_initcall(mpc86xx_hpcn, declare_of_platform_devices); +machine_arch_initcall(mpc86xx_hpcn, swiotlb_setup_bus_notifier); define_machine(mpc86xx_hpcn) { .name = "MPC86xx HPCN", diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index cca6b4f..61187be 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -1,7 +1,7 @@ config PPC64 bool "64-bit kernel" default n - select HAVE_PERF_COUNTERS + select PPC_HAVE_PMU_SUPPORT help This option selects whether a 32-bit or a 64-bit kernel will be built. @@ -21,7 +21,7 @@ choice If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx. -config PPC_BOOK3S +config PPC_BOOK3S_32 bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx" select PPC_FPU @@ -57,11 +57,14 @@ config E200 endchoice -config PPC_BOOK3S - default y +config PPC_BOOK3S_64 + def_bool y depends on PPC64 select PPC_FPU +config PPC_BOOK3S + def_bool y + depends on PPC_BOOK3S_32 || PPC_BOOK3S_64 config POWER4_ONLY bool "Optimize for POWER4" @@ -75,6 +78,7 @@ config POWER4_ONLY config 6xx def_bool y depends on PPC32 && PPC_BOOK3S + select PPC_HAVE_PMU_SUPPORT config POWER3 bool @@ -243,6 +247,15 @@ config VIRT_CPU_ACCOUNTING If in doubt, say Y here. +config PPC_HAVE_PMU_SUPPORT + bool + +config PPC_PERF_CTRS + def_bool y + depends on PERF_COUNTERS && PPC_HAVE_PMU_SUPPORT + help + This enables the powerpc-specific perf_counter back-end. + config SMP depends on PPC_STD_MMU || FSL_BOOKE bool "Symmetric multi-processing support" diff --git a/arch/powerpc/platforms/Makefile b/arch/powerpc/platforms/Makefile index f741919..a6812ee 100644 --- a/arch/powerpc/platforms/Makefile +++ b/arch/powerpc/platforms/Makefile @@ -1,4 +1,6 @@ +subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror + obj-$(CONFIG_FSL_ULI1575) += fsl_uli1575.o obj-$(CONFIG_PPC_PMAC) += powermac/ diff --git a/arch/powerpc/platforms/cell/smp.c b/arch/powerpc/platforms/cell/smp.c index 9046803..bc97fad 100644 --- a/arch/powerpc/platforms/cell/smp.c +++ b/arch/powerpc/platforms/cell/smp.c @@ -36,7 +36,6 @@ #include <asm/prom.h> #include <asm/smp.h> #include <asm/paca.h> -#include <asm/time.h> #include <asm/machdep.h> #include <asm/cputable.h> #include <asm/firmware.h> @@ -140,31 +139,6 @@ static void __devinit smp_cell_setup_cpu(int cpu) mtspr(SPRN_DABRX, DABRX_KERNEL | DABRX_USER); } -static DEFINE_SPINLOCK(timebase_lock); -static unsigned long timebase = 0; - -static void __devinit cell_give_timebase(void) -{ - spin_lock(&timebase_lock); - rtas_call(rtas_token("freeze-time-base"), 0, 1, NULL); - timebase = get_tb(); - spin_unlock(&timebase_lock); - - while (timebase) - barrier(); - rtas_call(rtas_token("thaw-time-base"), 0, 1, NULL); -} - -static void __devinit cell_take_timebase(void) -{ - while (!timebase) - barrier(); - spin_lock(&timebase_lock); - set_tb(timebase >> 32, timebase & 0xffffffff); - timebase = 0; - spin_unlock(&timebase_lock); -} - static void __devinit smp_cell_kick_cpu(int nr) { BUG_ON(nr < 0 || nr >= NR_CPUS); @@ -224,8 +198,8 @@ void __init smp_init_cell(void) /* Non-lpar has additional take/give timebase */ if (rtas_token("freeze-time-base") != RTAS_UNKNOWN_SERVICE) { - smp_ops->give_timebase = cell_give_timebase; - smp_ops->take_timebase = cell_take_timebase; + smp_ops->give_timebase = rtas_give_timebase; + smp_ops->take_timebase = rtas_take_timebase; } DBG(" <- smp_init_cell()\n"); diff --git a/arch/powerpc/platforms/cell/spu_fault.c b/arch/powerpc/platforms/cell/spu_fault.c index 95d8dad..d06ba87 100644 --- a/arch/powerpc/platforms/cell/spu_fault.c +++ b/arch/powerpc/platforms/cell/spu_fault.c @@ -70,7 +70,7 @@ int spu_handle_mm_fault(struct mm_struct *mm, unsigned long ea, } ret = 0; - *flt = handle_mm_fault(mm, vma, ea, is_write); + *flt = handle_mm_fault(mm, vma, ea, is_write ? FAULT_FLAG_WRITE : 0); if (unlikely(*flt & VM_FAULT_ERROR)) { if (*flt & VM_FAULT_OOM) { ret = -ENOMEM; diff --git a/arch/powerpc/platforms/chrp/smp.c b/arch/powerpc/platforms/chrp/smp.c index 10a4a4d..02cafec 100644 --- a/arch/powerpc/platforms/chrp/smp.c +++ b/arch/powerpc/platforms/chrp/smp.c @@ -26,7 +26,6 @@ #include <asm/io.h> #include <asm/prom.h> #include <asm/smp.h> -#include <asm/time.h> #include <asm/machdep.h> #include <asm/mpic.h> #include <asm/rtas.h> @@ -42,40 +41,12 @@ static void __devinit smp_chrp_setup_cpu(int cpu_nr) mpic_setup_this_cpu(); } -static DEFINE_SPINLOCK(timebase_lock); -static unsigned int timebase_upper = 0, timebase_lower = 0; - -void __devinit smp_chrp_give_timebase(void) -{ - spin_lock(&timebase_lock); - rtas_call(rtas_token("freeze-time-base"), 0, 1, NULL); - timebase_upper = get_tbu(); - timebase_lower = get_tbl(); - spin_unlock(&timebase_lock); - - while (timebase_upper || timebase_lower) - barrier(); - rtas_call(rtas_token("thaw-time-base"), 0, 1, NULL); -} - -void __devinit smp_chrp_take_timebase(void) -{ - while (!(timebase_upper || timebase_lower)) - barrier(); - spin_lock(&timebase_lock); - set_tb(timebase_upper, timebase_lower); - timebase_upper = 0; - timebase_lower = 0; - spin_unlock(&timebase_lock); - printk("CPU %i taken timebase\n", smp_processor_id()); -} - /* CHRP with openpic */ struct smp_ops_t chrp_smp_ops = { .message_pass = smp_mpic_message_pass, .probe = smp_mpic_probe, .kick_cpu = smp_chrp_kick_cpu, .setup_cpu = smp_chrp_setup_cpu, - .give_timebase = smp_chrp_give_timebase, - .take_timebase = smp_chrp_take_timebase, + .give_timebase = rtas_give_timebase, + .take_timebase = rtas_take_timebase, }; diff --git a/arch/powerpc/platforms/pasemi/setup.c b/arch/powerpc/platforms/pasemi/setup.c index 153051e..a461934 100644 --- a/arch/powerpc/platforms/pasemi/setup.c +++ b/arch/powerpc/platforms/pasemi/setup.c @@ -71,20 +71,25 @@ static void pas_restart(char *cmd) } #ifdef CONFIG_SMP -static DEFINE_SPINLOCK(timebase_lock); +static raw_spinlock_t timebase_lock; static unsigned long timebase; static void __devinit pas_give_timebase(void) { - spin_lock(&timebase_lock); + unsigned long flags; + + local_irq_save(flags); + hard_irq_disable(); + __raw_spin_lock(&timebase_lock); mtspr(SPRN_TBCTL, TBCTL_FREEZE); isync(); timebase = get_tb(); - spin_unlock(&timebase_lock); + __raw_spin_unlock(&timebase_lock); while (timebase) barrier(); mtspr(SPRN_TBCTL, TBCTL_RESTART); + local_irq_restore(flags); } static void __devinit pas_take_timebase(void) @@ -92,10 +97,10 @@ static void __devinit pas_take_timebase(void) while (!timebase) smp_rmb(); - spin_lock(&timebase_lock); + __raw_spin_lock(&timebase_lock); set_tb(timebase >> 32, timebase & 0xffffffff); timebase = 0; - spin_unlock(&timebase_lock); + __raw_spin_unlock(&timebase_lock); } struct smp_ops_t pas_smp_ops = { diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c index 86f69a4..c205226 100644 --- a/arch/powerpc/platforms/powermac/setup.c +++ b/arch/powerpc/platforms/powermac/setup.c @@ -103,11 +103,6 @@ unsigned long smu_cmdbuf_abs; EXPORT_SYMBOL(smu_cmdbuf_abs); #endif -#ifdef CONFIG_SMP -extern struct smp_ops_t psurge_smp_ops; -extern struct smp_ops_t core99_smp_ops; -#endif /* CONFIG_SMP */ - static void pmac_show_cpuinfo(struct seq_file *m) { struct device_node *np; @@ -341,34 +336,6 @@ static void __init pmac_setup_arch(void) ROOT_DEV = DEFAULT_ROOT_DEVICE; #endif -#ifdef CONFIG_SMP - /* Check for Core99 */ - ic = of_find_node_by_name(NULL, "uni-n"); - if (!ic) - ic = of_find_node_by_name(NULL, "u3"); - if (!ic) - ic = of_find_node_by_name(NULL, "u4"); - if (ic) { - of_node_put(ic); - smp_ops = &core99_smp_ops; - } -#ifdef CONFIG_PPC32 - else { - /* - * We have to set bits in cpu_possible_map here since the - * secondary CPU(s) aren't in the device tree, and - * setup_per_cpu_areas only allocates per-cpu data for - * CPUs in the cpu_possible_map. - */ - int cpu; - - for (cpu = 1; cpu < 4 && cpu < NR_CPUS; ++cpu) - cpu_set(cpu, cpu_possible_map); - smp_ops = &psurge_smp_ops; - } -#endif -#endif /* CONFIG_SMP */ - #ifdef CONFIG_ADB if (strstr(cmd_line, "adb_sync")) { extern int __adb_probe_sync; @@ -512,6 +479,14 @@ static void __init pmac_init_early(void) #ifdef CONFIG_PPC64 iommu_init_early_dart(); #endif + + /* SMP Init has to be done early as we need to patch up + * cpu_possible_map before interrupt stacks are allocated + * or kaboom... + */ +#ifdef CONFIG_SMP + pmac_setup_smp(); +#endif } static int __init pmac_declare_of_platform_devices(void) diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c index cf1dbe7..6d4da7b 100644 --- a/arch/powerpc/platforms/powermac/smp.c +++ b/arch/powerpc/platforms/powermac/smp.c @@ -64,10 +64,11 @@ extern void __secondary_start_pmac_0(void); extern int pmac_pfunc_base_install(void); -#ifdef CONFIG_PPC32 +static void (*pmac_tb_freeze)(int freeze); +static u64 timebase; +static int tb_req; -/* Sync flag for HW tb sync */ -static volatile int sec_tb_reset = 0; +#ifdef CONFIG_PPC32 /* * Powersurge (old powermac SMP) support. @@ -294,6 +295,9 @@ static int __init smp_psurge_probe(void) psurge_quad_init(); /* All released cards using this HW design have 4 CPUs */ ncpus = 4; + /* No sure how timebase sync works on those, let's use SW */ + smp_ops->give_timebase = smp_generic_give_timebase; + smp_ops->take_timebase = smp_generic_take_timebase; } else { iounmap(quad_base); if ((in_8(hhead_base + HHEAD_CONFIG) & 0x02) == 0) { @@ -308,18 +312,15 @@ static int __init smp_psurge_probe(void) psurge_start = ioremap(PSURGE_START, 4); psurge_pri_intr = ioremap(PSURGE_PRI_INTR, 4); - /* - * This is necessary because OF doesn't know about the + /* This is necessary because OF doesn't know about the * secondary cpu(s), and thus there aren't nodes in the * device tree for them, and smp_setup_cpu_maps hasn't - * set their bits in cpu_possible_map and cpu_present_map. + * set their bits in cpu_present_map. */ if (ncpus > NR_CPUS) ncpus = NR_CPUS; - for (i = 1; i < ncpus ; ++i) { + for (i = 1; i < ncpus ; ++i) cpu_set(i, cpu_present_map); - set_hard_smp_processor_id(i, i); - } if (ppc_md.progress) ppc_md.progress("smp_psurge_probe - done", 0x352); @@ -329,8 +330,14 @@ static int __init smp_psurge_probe(void) static void __init smp_psurge_kick_cpu(int nr) { unsigned long start = __pa(__secondary_start_pmac_0) + nr * 8; - unsigned long a; - int i; + unsigned long a, flags; + int i, j; + + /* Defining this here is evil ... but I prefer hiding that + * crap to avoid giving people ideas that they can do the + * same. + */ + extern volatile unsigned int cpu_callin_map[NR_CPUS]; /* may need to flush here if secondary bats aren't setup */ for (a = KERNELBASE; a < KERNELBASE + 0x800000; a += 32) @@ -339,47 +346,52 @@ static void __init smp_psurge_kick_cpu(int nr) if (ppc_md.progress) ppc_md.progress("smp_psurge_kick_cpu", 0x353); + /* This is going to freeze the timeebase, we disable interrupts */ + local_irq_save(flags); + out_be32(psurge_start, start); mb(); psurge_set_ipi(nr); + /* * We can't use udelay here because the timebase is now frozen. */ for (i = 0; i < 2000; ++i) - barrier(); + asm volatile("nop" : : : "memory"); psurge_clr_ipi(nr); - if (ppc_md.progress) ppc_md.progress("smp_psurge_kick_cpu - done", 0x354); -} - -/* - * With the dual-cpu powersurge board, the decrementers and timebases - * of both cpus are frozen after the secondary cpu is started up, - * until we give the secondary cpu another interrupt. This routine - * uses this to get the timebases synchronized. - * -- paulus. - */ -static void __init psurge_dual_sync_tb(int cpu_nr) -{ - int t; - - set_dec(tb_ticks_per_jiffy); - /* XXX fixme */ - set_tb(0, 0); - - if (cpu_nr > 0) { + /* + * Also, because the timebase is frozen, we must not return to the + * caller which will try to do udelay's etc... Instead, we wait -here- + * for the CPU to callin. + */ + for (i = 0; i < 100000 && !cpu_callin_map[nr]; ++i) { + for (j = 1; j < 10000; j++) + asm volatile("nop" : : : "memory"); + asm volatile("sync" : : : "memory"); + } + if (!cpu_callin_map[nr]) + goto stuck; + + /* And we do the TB sync here too for standard dual CPU cards */ + if (psurge_type == PSURGE_DUAL) { + while(!tb_req) + barrier(); + tb_req = 0; + mb(); + timebase = get_tb(); + mb(); + while (timebase) + barrier(); mb(); - sec_tb_reset = 1; - return; } + stuck: + /* now interrupt the secondary, restarting both TBs */ + if (psurge_type == PSURGE_DUAL) + psurge_set_ipi(1); - /* wait for the secondary to have reset its TB before proceeding */ - for (t = 10000000; t > 0 && !sec_tb_reset; --t) - ; - - /* now interrupt the secondary, starting both TBs */ - psurge_set_ipi(1); + if (ppc_md.progress) ppc_md.progress("smp_psurge_kick_cpu - done", 0x354); } static struct irqaction psurge_irqaction = { @@ -390,36 +402,35 @@ static struct irqaction psurge_irqaction = { static void __init smp_psurge_setup_cpu(int cpu_nr) { + if (cpu_nr != 0) + return; - if (cpu_nr == 0) { - /* If we failed to start the second CPU, we should still - * send it an IPI to start the timebase & DEC or we might - * have them stuck. - */ - if (num_online_cpus() < 2) { - if (psurge_type == PSURGE_DUAL) - psurge_set_ipi(1); - return; - } - /* reset the entry point so if we get another intr we won't - * try to startup again */ - out_be32(psurge_start, 0x100); - if (setup_irq(30, &psurge_irqaction)) - printk(KERN_ERR "Couldn't get primary IPI interrupt"); - } - - if (psurge_type == PSURGE_DUAL) - psurge_dual_sync_tb(cpu_nr); + /* reset the entry point so if we get another intr we won't + * try to startup again */ + out_be32(psurge_start, 0x100); + if (setup_irq(30, &psurge_irqaction)) + printk(KERN_ERR "Couldn't get primary IPI interrupt"); } void __init smp_psurge_take_timebase(void) { - /* Dummy implementation */ + if (psurge_type != PSURGE_DUAL) + return; + + tb_req = 1; + mb(); + while (!timebase) + barrier(); + mb(); + set_tb(timebase >> 32, timebase & 0xffffffff); + timebase = 0; + mb(); + set_dec(tb_ticks_per_jiffy/2); } void __init smp_psurge_give_timebase(void) { - /* Dummy implementation */ + /* Nothing to do here */ } /* PowerSurge-style Macs */ @@ -437,9 +448,6 @@ struct smp_ops_t psurge_smp_ops = { * Core 99 and later support */ -static void (*pmac_tb_freeze)(int freeze); -static u64 timebase; -static int tb_req; static void smp_core99_give_timebase(void) { @@ -478,7 +486,6 @@ static void __devinit smp_core99_take_timebase(void) set_tb(timebase >> 32, timebase & 0xffffffff); timebase = 0; mb(); - set_dec(tb_ticks_per_jiffy/2); local_irq_restore(flags); } @@ -920,3 +927,34 @@ struct smp_ops_t core99_smp_ops = { # endif #endif }; + +void __init pmac_setup_smp(void) +{ + struct device_node *np; + + /* Check for Core99 */ + np = of_find_node_by_name(NULL, "uni-n"); + if (!np) + np = of_find_node_by_name(NULL, "u3"); + if (!np) + np = of_find_node_by_name(NULL, "u4"); + if (np) { + of_node_put(np); + smp_ops = &core99_smp_ops; + } +#ifdef CONFIG_PPC32 + else { + /* We have to set bits in cpu_possible_map here since the + * secondary CPU(s) aren't in the device tree. Various + * things won't be initialized for CPUs not in the possible + * map, so we really need to fix it up here. + */ + int cpu; + + for (cpu = 1; cpu < 4 && cpu < NR_CPUS; ++cpu) + cpu_set(cpu, cpu_possible_map); + smp_ops = &psurge_smp_ops; + } +#endif /* CONFIG_PPC32 */ +} + diff --git a/arch/powerpc/platforms/pseries/eeh_driver.c b/arch/powerpc/platforms/pseries/eeh_driver.c index 9a2a6e3..0e8db67 100644 --- a/arch/powerpc/platforms/pseries/eeh_driver.c +++ b/arch/powerpc/platforms/pseries/eeh_driver.c @@ -122,7 +122,7 @@ static void eeh_enable_irq(struct pci_dev *dev) * passed back in "userdata". */ -static void eeh_report_error(struct pci_dev *dev, void *userdata) +static int eeh_report_error(struct pci_dev *dev, void *userdata) { enum pci_ers_result rc, *res = userdata; struct pci_driver *driver = dev->driver; @@ -130,19 +130,21 @@ static void eeh_report_error(struct pci_dev *dev, void *userdata) dev->error_state = pci_channel_io_frozen; if (!driver) - return; + return 0; eeh_disable_irq(dev); if (!driver->err_handler || !driver->err_handler->error_detected) - return; + return 0; rc = driver->err_handler->error_detected (dev, pci_channel_io_frozen); /* A driver that needs a reset trumps all others */ if (rc == PCI_ERS_RESULT_NEED_RESET) *res = rc; if (*res == PCI_ERS_RESULT_NONE) *res = rc; + + return 0; } /** @@ -153,7 +155,7 @@ static void eeh_report_error(struct pci_dev *dev, void *userdata) * Cumulative response passed back in "userdata". */ -static void eeh_report_mmio_enabled(struct pci_dev *dev, void *userdata) +static int eeh_report_mmio_enabled(struct pci_dev *dev, void *userdata) { enum pci_ers_result rc, *res = userdata; struct pci_driver *driver = dev->driver; @@ -161,26 +163,28 @@ static void eeh_report_mmio_enabled(struct pci_dev *dev, void *userdata) if (!driver || !driver->err_handler || !driver->err_handler->mmio_enabled) - return; + return 0; rc = driver->err_handler->mmio_enabled (dev); /* A driver that needs a reset trumps all others */ if (rc == PCI_ERS_RESULT_NEED_RESET) *res = rc; if (*res == PCI_ERS_RESULT_NONE) *res = rc; + + return 0; } /** * eeh_report_reset - tell device that slot has been reset */ -static void eeh_report_reset(struct pci_dev *dev, void *userdata) +static int eeh_report_reset(struct pci_dev *dev, void *userdata) { enum pci_ers_result rc, *res = userdata; struct pci_driver *driver = dev->driver; if (!driver) - return; + return 0; dev->error_state = pci_channel_io_normal; @@ -188,35 +192,39 @@ static void eeh_report_reset(struct pci_dev *dev, void *userdata) if (!driver->err_handler || !driver->err_handler->slot_reset) - return; + return 0; rc = driver->err_handler->slot_reset(dev); if ((*res == PCI_ERS_RESULT_NONE) || (*res == PCI_ERS_RESULT_RECOVERED)) *res = rc; if (*res == PCI_ERS_RESULT_DISCONNECT && rc == PCI_ERS_RESULT_NEED_RESET) *res = rc; + + return 0; } /** * eeh_report_resume - tell device to resume normal operations */ -static void eeh_report_resume(struct pci_dev *dev, void *userdata) +static int eeh_report_resume(struct pci_dev *dev, void *userdata) { struct pci_driver *driver = dev->driver; dev->error_state = pci_channel_io_normal; if (!driver) - return; + return 0; eeh_enable_irq(dev); if (!driver->err_handler || !driver->err_handler->resume) - return; + return 0; driver->err_handler->resume(dev); + + return 0; } /** @@ -226,22 +234,24 @@ static void eeh_report_resume(struct pci_dev *dev, void *userdata) * dead, and that no further recovery attempts will be made on it. */ -static void eeh_report_failure(struct pci_dev *dev, void *userdata) +static int eeh_report_failure(struct pci_dev *dev, void *userdata) { struct pci_driver *driver = dev->driver; dev->error_state = pci_channel_io_perm_failure; if (!driver) - return; + return 0; eeh_disable_irq(dev); if (!driver->err_handler || !driver->err_handler->error_detected) - return; + return 0; driver->err_handler->error_detected(dev, pci_channel_io_perm_failure); + + return 0; } /* ------------------------------------------------------- */ diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c index 1a231c3..1f8f6cf 100644 --- a/arch/powerpc/platforms/pseries/smp.c +++ b/arch/powerpc/platforms/pseries/smp.c @@ -35,7 +35,6 @@ #include <asm/prom.h> #include <asm/smp.h> #include <asm/paca.h> -#include <asm/time.h> #include <asm/machdep.h> #include <asm/cputable.h> #include <asm/firmware.h> @@ -118,31 +117,6 @@ static void __devinit smp_xics_setup_cpu(int cpu) } #endif /* CONFIG_XICS */ -static DEFINE_SPINLOCK(timebase_lock); -static unsigned long timebase = 0; - -static void __devinit pSeries_give_timebase(void) -{ - spin_lock(&timebase_lock); - rtas_call(rtas_token("freeze-time-base"), 0, 1, NULL); - timebase = get_tb(); - spin_unlock(&timebase_lock); - - while (timebase) - barrier(); - rtas_call(rtas_token("thaw-time-base"), 0, 1, NULL); -} - -static void __devinit pSeries_take_timebase(void) -{ - while (!timebase) - barrier(); - spin_lock(&timebase_lock); - set_tb(timebase >> 32, timebase & 0xffffffff); - timebase = 0; - spin_unlock(&timebase_lock); -} - static void __devinit smp_pSeries_kick_cpu(int nr) { BUG_ON(nr < 0 || nr >= NR_CPUS); @@ -209,8 +183,8 @@ static void __init smp_init_pseries(void) /* Non-lpar has additional take/give timebase */ if (rtas_token("freeze-time-base") != RTAS_UNKNOWN_SERVICE) { - smp_ops->give_timebase = pSeries_give_timebase; - smp_ops->take_timebase = pSeries_take_timebase; + smp_ops->give_timebase = rtas_give_timebase; + smp_ops->take_timebase = rtas_take_timebase; } pr_debug(" <- smp_init_pSeries()\n"); 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