diff options
Diffstat (limited to 'arch')
156 files changed, 3152 insertions, 1656 deletions
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c index eb20c3afff58..a8682612abc0 100644 --- a/arch/alpha/kernel/process.c +++ b/arch/alpha/kernel/process.c @@ -43,21 +43,17 @@ #include "proto.h" #include "pci_impl.h" -void default_idle(void) -{ - barrier(); -} - void cpu_idle(void) { + set_thread_flag(TIF_POLLING_NRFLAG); + while (1) { - void (*idle)(void) = default_idle; /* FIXME -- EV6 and LCA45 know how to power down the CPU. */ while (!need_resched()) - idle(); + cpu_relax(); schedule(); } } diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 296bc03d1cf1..ec77721507cb 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -324,7 +324,7 @@ menu "Kernel Features" config SMP bool "Symmetric Multi-Processing (EXPERIMENTAL)" - depends on EXPERIMENTAL && BROKEN #&& n + depends on EXPERIMENTAL && REALVIEW_MPCORE help This enables support for systems with more than one CPU. If you have a system with only one CPU, like most personal computers, say N. If @@ -356,6 +356,16 @@ config HOTPLUG_CPU Say Y here to experiment with turning CPUs off and on. CPUs can be controlled through /sys/devices/system/cpu. +config LOCAL_TIMERS + bool "Use local timer interrupts" + depends on SMP && REALVIEW_MPCORE + default y + help + Enable support for local timers on SMP platforms, rather then the + legacy IPI broadcast method. Local timers allows the system + accounting to be spread across the timer interval, preventing a + "thundering herd" at every timer tick. + config PREEMPT bool "Preemptible Kernel (EXPERIMENTAL)" depends on EXPERIMENTAL @@ -585,7 +595,7 @@ config FPE_NWFPE config FPE_NWFPE_XP bool "Support extended precision" - depends on FPE_NWFPE && !CPU_BIG_ENDIAN + depends on FPE_NWFPE help Say Y to include 80-bit support in the kernel floating-point emulator. Otherwise, only 32 and 64-bit support is compiled in. diff --git a/arch/arm/boot/compressed/misc.c b/arch/arm/boot/compressed/misc.c index 50f13eec6cd7..5ab94584baee 100644 --- a/arch/arm/boot/compressed/misc.c +++ b/arch/arm/boot/compressed/misc.c @@ -283,8 +283,14 @@ void flush_window(void) putstr("."); } +#ifndef arch_error +#define arch_error(x) +#endif + static void error(char *x) { + arch_error(x); + putstr("\n\n"); putstr(x); putstr("\n\n -- System halted"); diff --git a/arch/arm/common/scoop.c b/arch/arm/common/scoop.c index bb4eff614413..c7fdf390cef9 100644 --- a/arch/arm/common/scoop.c +++ b/arch/arm/common/scoop.c @@ -19,12 +19,6 @@ #define SCOOP_REG(d,adr) (*(volatile unsigned short*)(d +(adr))) -/* PCMCIA to Scoop linkage structures for pxa2xx_sharpsl.c - There is no easy way to link multiple scoop devices into one - single entity for the pxa2xx_pcmcia device */ -int scoop_num; -struct scoop_pcmcia_dev *scoop_devs; - struct scoop_dev { void *base; spinlock_t scoop_lock; diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c index 7b17a87a3311..7a3261f0bf79 100644 --- a/arch/arm/kernel/armksyms.c +++ b/arch/arm/kernel/armksyms.c @@ -9,6 +9,7 @@ */ #include <linux/module.h> #include <linux/string.h> +#include <linux/cryptohash.h> #include <linux/delay.h> #include <linux/in6.h> #include <linux/syscalls.h> @@ -126,6 +127,9 @@ EXPORT_SYMBOL(__put_user_2); EXPORT_SYMBOL(__put_user_4); EXPORT_SYMBOL(__put_user_8); + /* crypto hash */ +EXPORT_SYMBOL(sha_transform); + /* gcc lib functions */ EXPORT_SYMBOL(__ashldi3); EXPORT_SYMBOL(__ashrdi3); diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index a511ec5b11a3..d9fb819bf7cc 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -47,6 +47,13 @@ movne r0, sp adrne lr, 1b bne do_IPI + +#ifdef CONFIG_LOCAL_TIMERS + test_for_ltirq r0, r6, r5, lr + movne r0, sp + adrne lr, 1b + bne do_local_timer +#endif #endif .endm diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c index 9def4404e1f2..d7099dbbb879 100644 --- a/arch/arm/kernel/irq.c +++ b/arch/arm/kernel/irq.c @@ -264,6 +264,7 @@ unlock: #endif #ifdef CONFIG_SMP show_ipi_list(p); + show_local_irqs(p); #endif seq_printf(p, "Err: %10lu\n", irq_err_count); } @@ -995,7 +996,7 @@ void __init init_irq_proc(void) struct proc_dir_entry *dir; int irq; - dir = proc_mkdir("irq", 0); + dir = proc_mkdir("irq", NULL); if (!dir) return; diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index ba298277becd..30494aab829a 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -86,12 +86,16 @@ EXPORT_SYMBOL(pm_power_off); */ void default_idle(void) { - local_irq_disable(); - if (!need_resched() && !hlt_counter) { - timer_dyn_reprogram(); - arch_idle(); + if (hlt_counter) + cpu_relax(); + else { + local_irq_disable(); + if (!need_resched()) { + timer_dyn_reprogram(); + arch_idle(); + } + local_irq_enable(); } - local_irq_enable(); } /* @@ -116,13 +120,13 @@ void cpu_idle(void) if (!idle) idle = default_idle; - preempt_disable(); leds_event(led_idle_start); while (!need_resched()) idle(); leds_event(led_idle_end); - preempt_enable(); + preempt_enable_no_resched(); schedule(); + preempt_disable(); } } @@ -355,7 +359,7 @@ copy_thread(int nr, unsigned long clone_flags, unsigned long stack_start, struct thread_info *thread = p->thread_info; struct pt_regs *childregs; - childregs = ((struct pt_regs *)((unsigned long)thread + THREAD_START_SP)) - 1; + childregs = (void *)thread + THREAD_START_SP - sizeof(*regs); *childregs = *regs; childregs->ARM_r0 = 0; childregs->ARM_sp = stack_start; diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index edb5a406922f..e55ea952f7aa 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -142,7 +142,7 @@ int __cpuinit __cpu_up(unsigned int cpu) ret = -EIO; } - secondary_data.stack = 0; + secondary_data.stack = NULL; secondary_data.pgdir = 0; *pmd_offset(pgd, PHYS_OFFSET) = __pmd(0); @@ -185,6 +185,11 @@ int __cpuexit __cpu_disable(void) migrate_irqs(); /* + * Stop the local timer for this CPU. + */ + local_timer_stop(cpu); + + /* * Flush user cache and TLB mappings, and then remove this CPU * from the vm mask set of all processes. */ @@ -251,7 +256,9 @@ void __cpuexit cpu_die(void) asmlinkage void __cpuinit secondary_start_kernel(void) { struct mm_struct *mm = &init_mm; - unsigned int cpu = smp_processor_id(); + unsigned int cpu; + + cpu = smp_processor_id(); printk("CPU%u: Booted secondary processor\n", cpu); @@ -268,6 +275,7 @@ asmlinkage void __cpuinit secondary_start_kernel(void) local_flush_tlb_all(); cpu_init(); + preempt_disable(); /* * Give the platform a chance to do its own initialisation. @@ -290,6 +298,11 @@ asmlinkage void __cpuinit secondary_start_kernel(void) cpu_set(cpu, cpu_online_map); /* + * Setup local timer for this CPU. + */ + local_timer_setup(cpu); + + /* * OK, it's off to the idle thread for us */ cpu_idle(); @@ -359,8 +372,8 @@ static void send_ipi_message(cpumask_t callmap, enum ipi_msg_type msg) * You must not call this function with disabled interrupts, from a * hardware interrupt handler, nor from a bottom half handler. */ -int smp_call_function_on_cpu(void (*func)(void *info), void *info, int retry, - int wait, cpumask_t callmap) +static int smp_call_function_on_cpu(void (*func)(void *info), void *info, + int retry, int wait, cpumask_t callmap) { struct smp_call_struct data; unsigned long timeout; @@ -454,6 +467,18 @@ void show_ipi_list(struct seq_file *p) seq_putc(p, '\n'); } +void show_local_irqs(struct seq_file *p) +{ + unsigned int cpu; + + seq_printf(p, "LOC: "); + + for_each_present_cpu(cpu) + seq_printf(p, "%10u ", irq_stat[cpu].local_timer_irqs); + + seq_putc(p, '\n'); +} + static void ipi_timer(struct pt_regs *regs) { int user = user_mode(regs); @@ -464,6 +489,18 @@ static void ipi_timer(struct pt_regs *regs) irq_exit(); } +#ifdef CONFIG_LOCAL_TIMERS +asmlinkage void do_local_timer(struct pt_regs *regs) +{ + int cpu = smp_processor_id(); + + if (local_timer_ack()) { + irq_stat[cpu].local_timer_irqs++; + ipi_timer(regs); + } +} +#endif + /* * ipi_call_function - handle IPI from smp_call_function() * @@ -515,7 +552,7 @@ static void ipi_cpu_stop(unsigned int cpu) * * Bit 0 - Inter-processor function call */ -void do_IPI(struct pt_regs *regs) +asmlinkage void do_IPI(struct pt_regs *regs) { unsigned int cpu = smp_processor_id(); struct ipi_data *ipi = &per_cpu(ipi_data, cpu); diff --git a/arch/arm/lib/bitops.h b/arch/arm/lib/bitops.h index f35d91fbe117..b8c14e936697 100644 --- a/arch/arm/lib/bitops.h +++ b/arch/arm/lib/bitops.h @@ -34,7 +34,7 @@ and r2, r0, #7 mov r3, #1 mov r3, r3, lsl r2 - save_and_disable_irqs ip, r2 + save_and_disable_irqs ip ldrb r2, [r1, r0, lsr #3] \instr r2, r2, r3 strb r2, [r1, r0, lsr #3] @@ -54,7 +54,7 @@ add r1, r1, r0, lsr #3 and r3, r0, #7 mov r0, #1 - save_and_disable_irqs ip, r2 + save_and_disable_irqs ip ldrb r2, [r1] tst r2, r0, lsl r3 \instr r2, r2, r0, lsl r3 diff --git a/arch/arm/mach-ixp2000/core.c b/arch/arm/mach-ixp2000/core.c index df140962bb0f..6851abaf5524 100644 --- a/arch/arm/mach-ixp2000/core.c +++ b/arch/arm/mach-ixp2000/core.c @@ -84,63 +84,54 @@ static struct map_desc ixp2000_io_desc[] __initdata = { .virtual = IXP2000_CAP_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_CAP_PHYS_BASE), .length = IXP2000_CAP_SIZE, - .type = MT_DEVICE + .type = MT_IXP2000_DEVICE, }, { .virtual = IXP2000_INTCTL_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_INTCTL_PHYS_BASE), .length = IXP2000_INTCTL_SIZE, - .type = MT_DEVICE + .type = MT_IXP2000_DEVICE, }, { .virtual = IXP2000_PCI_CREG_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_PCI_CREG_PHYS_BASE), .length = IXP2000_PCI_CREG_SIZE, - .type = MT_DEVICE + .type = MT_IXP2000_DEVICE, }, { .virtual = IXP2000_PCI_CSR_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_PCI_CSR_PHYS_BASE), .length = IXP2000_PCI_CSR_SIZE, - .type = MT_DEVICE + .type = MT_IXP2000_DEVICE, }, { .virtual = IXP2000_MSF_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_MSF_PHYS_BASE), .length = IXP2000_MSF_SIZE, - .type = MT_DEVICE + .type = MT_IXP2000_DEVICE, }, { .virtual = IXP2000_PCI_IO_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_PCI_IO_PHYS_BASE), .length = IXP2000_PCI_IO_SIZE, - .type = MT_DEVICE + .type = MT_IXP2000_DEVICE, }, { .virtual = IXP2000_PCI_CFG0_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_PCI_CFG0_PHYS_BASE), .length = IXP2000_PCI_CFG0_SIZE, - .type = MT_DEVICE + .type = MT_IXP2000_DEVICE, }, { .virtual = IXP2000_PCI_CFG1_VIRT_BASE, .pfn = __phys_to_pfn(IXP2000_PCI_CFG1_PHYS_BASE), .length = IXP2000_PCI_CFG1_SIZE, - .type = MT_DEVICE + .type = MT_IXP2000_DEVICE, } }; void __init ixp2000_map_io(void) { - extern unsigned int processor_id; - /* - * On IXP2400 CPUs we need to use MT_IXP2000_DEVICE for - * tweaking the PMDs so XCB=101. On IXP2800s we use the normal - * PMD flags. + * On IXP2400 CPUs we need to use MT_IXP2000_DEVICE so that + * XCB=101 (to avoid triggering erratum #66), and given that + * this mode speeds up I/O accesses and we have write buffer + * flushes in the right places anyway, it doesn't hurt to use + * XCB=101 for all IXP2000s. */ - if ((processor_id & 0xfffffff0) == 0x69054190) { - int i; - - printk(KERN_INFO "Enabling IXP2400 erratum #66 workaround\n"); - - for(i=0;i<ARRAY_SIZE(ixp2000_io_desc);i++) - ixp2000_io_desc[i].type = MT_IXP2000_DEVICE; - } - iotable_init(ixp2000_io_desc, ARRAY_SIZE(ixp2000_io_desc)); /* Set slowport to 8-bit mode. */ diff --git a/arch/arm/mach-omap1/leds-h2p2-debug.c b/arch/arm/mach-omap1/leds-h2p2-debug.c index be283cda63dd..399010c14036 100644 --- a/arch/arm/mach-omap1/leds-h2p2-debug.c +++ b/arch/arm/mach-omap1/leds-h2p2-debug.c @@ -13,7 +13,6 @@ #include <linux/init.h> #include <linux/kernel_stat.h> #include <linux/sched.h> -#include <linux/version.h> #include <asm/io.h> #include <asm/hardware.h> diff --git a/arch/arm/mach-pxa/corgi.c b/arch/arm/mach-pxa/corgi.c index eb5f6d744a4a..100fb31b5156 100644 --- a/arch/arm/mach-pxa/corgi.c +++ b/arch/arm/mach-pxa/corgi.c @@ -62,6 +62,37 @@ static struct scoop_config corgi_scoop_setup = { .io_out = CORGI_SCOOP_IO_OUT, }; +struct platform_device corgiscoop_device = { + .name = "sharp-scoop", + .id = -1, + .dev = { + .platform_data = &corgi_scoop_setup, + }, + .num_resources = ARRAY_SIZE(corgi_scoop_resources), + .resource = corgi_scoop_resources, +}; + +static void corgi_pcmcia_init(void) +{ + /* Setup default state of GPIO outputs + before we enable them as outputs. */ + GPSR(GPIO48_nPOE) = GPIO_bit(GPIO48_nPOE) | + GPIO_bit(GPIO49_nPWE) | GPIO_bit(GPIO50_nPIOR) | + GPIO_bit(GPIO51_nPIOW) | GPIO_bit(GPIO52_nPCE_1) | + GPIO_bit(GPIO53_nPCE_2); + + pxa_gpio_mode(GPIO48_nPOE_MD); + pxa_gpio_mode(GPIO49_nPWE_MD); + pxa_gpio_mode(GPIO50_nPIOR_MD); + pxa_gpio_mode(GPIO51_nPIOW_MD); + pxa_gpio_mode(GPIO55_nPREG_MD); + pxa_gpio_mode(GPIO56_nPWAIT_MD); + pxa_gpio_mode(GPIO57_nIOIS16_MD); + pxa_gpio_mode(GPIO52_nPCE_1_MD); + pxa_gpio_mode(GPIO53_nPCE_2_MD); + pxa_gpio_mode(GPIO54_pSKTSEL_MD); +} + static struct scoop_pcmcia_dev corgi_pcmcia_scoop[] = { { .dev = &corgiscoop_device.dev, @@ -71,16 +102,14 @@ static struct scoop_pcmcia_dev corgi_pcmcia_scoop[] = { }, }; -struct platform_device corgiscoop_device = { - .name = "sharp-scoop", - .id = -1, - .dev = { - .platform_data = &corgi_scoop_setup, - }, - .num_resources = ARRAY_SIZE(corgi_scoop_resources), - .resource = corgi_scoop_resources, +static struct scoop_pcmcia_config corgi_pcmcia_config = { + .devs = &corgi_pcmcia_scoop[0], + .num_devs = 1, + .pcmcia_init = corgi_pcmcia_init, }; +EXPORT_SYMBOL(corgiscoop_device); + /* * Corgi SSP Device @@ -294,8 +323,7 @@ static void __init corgi_init(void) pxa_set_mci_info(&corgi_mci_platform_data); pxa_set_ficp_info(&corgi_ficp_platform_data); - scoop_num = 1; - scoop_devs = &corgi_pcmcia_scoop[0]; + platform_scoop_config = &corgi_pcmcia_config; platform_add_devices(devices, ARRAY_SIZE(devices)); } diff --git a/arch/arm/mach-pxa/poodle.c b/arch/arm/mach-pxa/poodle.c index ad6a13f95a62..eef3de26ad37 100644 --- a/arch/arm/mach-pxa/poodle.c +++ b/arch/arm/mach-pxa/poodle.c @@ -65,6 +65,27 @@ struct platform_device poodle_scoop_device = { .resource = poodle_scoop_resources, }; +static void poodle_pcmcia_init(void) +{ + /* Setup default state of GPIO outputs + before we enable them as outputs. */ + GPSR(GPIO48_nPOE) = GPIO_bit(GPIO48_nPOE) | + GPIO_bit(GPIO49_nPWE) | GPIO_bit(GPIO50_nPIOR) | + GPIO_bit(GPIO51_nPIOW) | GPIO_bit(GPIO52_nPCE_1) | + GPIO_bit(GPIO53_nPCE_2); + + pxa_gpio_mode(GPIO48_nPOE_MD); + pxa_gpio_mode(GPIO49_nPWE_MD); + pxa_gpio_mode(GPIO50_nPIOR_MD); + pxa_gpio_mode(GPIO51_nPIOW_MD); + pxa_gpio_mode(GPIO55_nPREG_MD); + pxa_gpio_mode(GPIO56_nPWAIT_MD); + pxa_gpio_mode(GPIO57_nIOIS16_MD); + pxa_gpio_mode(GPIO52_nPCE_1_MD); + pxa_gpio_mode(GPIO53_nPCE_2_MD); + pxa_gpio_mode(GPIO54_pSKTSEL_MD); +} + static struct scoop_pcmcia_dev poodle_pcmcia_scoop[] = { { .dev = &poodle_scoop_device.dev, @@ -74,6 +95,14 @@ static struct scoop_pcmcia_dev poodle_pcmcia_scoop[] = { }, }; +static struct scoop_pcmcia_config poodle_pcmcia_config = { + .devs = &poodle_pcmcia_scoop[0], + .num_devs = 1, + .pcmcia_init = poodle_pcmcia_init, +}; + +EXPORT_SYMBOL(poodle_scoop_device); + /* LoCoMo device */ static struct resource locomo_resources[] = { @@ -268,8 +297,7 @@ static void __init poodle_init(void) pxa_set_mci_info(&poodle_mci_platform_data); pxa_set_ficp_info(&poodle_ficp_platform_data); - scoop_num = 1; - scoop_devs = &poodle_pcmcia_scoop[0]; + platform_scoop_config = &poodle_pcmcia_config; ret = platform_add_devices(devices, ARRAY_SIZE(devices)); if (ret) { diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c index 6c6878cd2207..4e9a699ee428 100644 --- a/arch/arm/mach-pxa/spitz.c +++ b/arch/arm/mach-pxa/spitz.c @@ -104,6 +104,66 @@ struct platform_device spitzscoop2_device = { .resource = spitz_scoop2_resources, }; +#define SPITZ_PWR_SD 0x01 +#define SPITZ_PWR_CF 0x02 + +/* Power control is shared with between one of the CF slots and SD */ +static void spitz_card_pwr_ctrl(int device, unsigned short new_cpr) +{ + unsigned short cpr = read_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR); + + if (new_cpr & 0x0007) { + set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CF_POWER); + if (!(cpr & 0x0002) && !(cpr & 0x0004)) + mdelay(5); + if (device == SPITZ_PWR_CF) + cpr |= 0x0002; + if (device == SPITZ_PWR_SD) + cpr |= 0x0004; + write_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR, cpr | new_cpr); + } else { + if (device == SPITZ_PWR_CF) + cpr &= ~0x0002; + if (device == SPITZ_PWR_SD) + cpr &= ~0x0004; + write_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR, cpr | new_cpr); + if (!(cpr & 0x0002) && !(cpr & 0x0004)) { + mdelay(1); + reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CF_POWER); + } + } +} + +static void spitz_pcmcia_init(void) +{ + /* Setup default state of GPIO outputs + before we enable them as outputs. */ + GPSR(GPIO48_nPOE) = GPIO_bit(GPIO48_nPOE) | + GPIO_bit(GPIO49_nPWE) | GPIO_bit(GPIO50_nPIOR) | + GPIO_bit(GPIO51_nPIOW) | GPIO_bit(GPIO54_nPCE_2); + GPSR(GPIO85_nPCE_1) = GPIO_bit(GPIO85_nPCE_1); + + pxa_gpio_mode(GPIO48_nPOE_MD); + pxa_gpio_mode(GPIO49_nPWE_MD); + pxa_gpio_mode(GPIO50_nPIOR_MD); + pxa_gpio_mode(GPIO51_nPIOW_MD); + pxa_gpio_mode(GPIO55_nPREG_MD); + pxa_gpio_mode(GPIO56_nPWAIT_MD); + pxa_gpio_mode(GPIO57_nIOIS16_MD); + pxa_gpio_mode(GPIO85_nPCE_1_MD); + pxa_gpio_mode(GPIO54_nPCE_2_MD); + pxa_gpio_mode(GPIO104_pSKTSEL_MD); +} + +static void spitz_pcmcia_pwr(struct device *scoop, unsigned short cpr, int nr) +{ + /* Only need to override behaviour for slot 0 */ + if (nr == 0) + spitz_card_pwr_ctrl(SPITZ_PWR_CF, cpr); + else + write_scoop_reg(scoop, SCOOP_CPR, cpr); +} + static struct scoop_pcmcia_dev spitz_pcmcia_scoop[] = { { .dev = &spitzscoop_device.dev, @@ -117,6 +177,16 @@ static struct scoop_pcmcia_dev spitz_pcmcia_scoop[] = { }, }; +static struct scoop_pcmcia_config spitz_pcmcia_config = { + .devs = &spitz_pcmcia_scoop[0], + .num_devs = 2, + .pcmcia_init = spitz_pcmcia_init, + .power_ctrl = spitz_pcmcia_pwr, +}; + +EXPORT_SYMBOL(spitzscoop_device); +EXPORT_SYMBOL(spitzscoop2_device); + /* * Spitz SSP Device @@ -235,27 +305,14 @@ static int spitz_mci_init(struct device *dev, irqreturn_t (*spitz_detect_int)(in return 0; } -/* Power control is shared with one of the CF slots so we have a mess */ static void spitz_mci_setpower(struct device *dev, unsigned int vdd) { struct pxamci_platform_data* p_d = dev->platform_data; - unsigned short cpr = read_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR); - - if (( 1 << vdd) & p_d->ocr_mask) { - /* printk(KERN_DEBUG "%s: on\n", __FUNCTION__); */ - set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CF_POWER); - mdelay(2); - write_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR, cpr | 0x04); - } else { - /* printk(KERN_DEBUG "%s: off\n", __FUNCTION__); */ - write_scoop_reg(&spitzscoop_device.dev, SCOOP_CPR, cpr & ~0x04); - - if (!(cpr | 0x02)) { - mdelay(1); - reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_CF_POWER); - } - } + if (( 1 << vdd) & p_d->ocr_mask) + spitz_card_pwr_ctrl(SPITZ_PWR_SD, 0x0004); + else + spitz_card_pwr_ctrl(SPITZ_PWR_SD, 0x0000); } static int spitz_mci_get_ro(struct device *dev) @@ -351,8 +408,8 @@ static void __init common_init(void) static void __init spitz_init(void) { - scoop_num = 2; - scoop_devs = &spitz_pcmcia_scoop[0]; + platform_scoop_config = &spitz_pcmcia_config; + spitz_bl_machinfo.set_bl_intensity = spitz_bl_set_intensity; common_init(); diff --git a/arch/arm/mach-pxa/time.c b/arch/arm/mach-pxa/time.c index 7dad3f1465e0..b9b2057349eb 100644 --- a/arch/arm/mach-pxa/time.c +++ b/arch/arm/mach-pxa/time.c @@ -132,11 +132,13 @@ static void __init pxa_timer_init(void) tv.tv_sec = pxa_get_rtc_time(); do_settimeofday(&tv); - OSMR0 = 0; /* set initial match at 0 */ + OIER = 0; /* disable any timer interrupts */ + OSCR = LATCH*2; /* push OSCR out of the way */ + OSMR0 = LATCH; /* set initial match */ OSSR = 0xf; /* clear status on all timers */ setup_irq(IRQ_OST0, &pxa_timer_irq); - OIER |= OIER_E0; /* enable match on timer 0 to cause interrupts */ - OSCR = 0; /* initialize free-running timer, force first match */ + OIER = OIER_E0; /* enable match on timer 0 to cause interrupts */ + OSCR = 0; /* initialize free-running timer */ } #ifdef CONFIG_NO_IDLE_HZ diff --git a/arch/arm/mach-pxa/tosa.c b/arch/arm/mach-pxa/tosa.c index 400609f8b6a8..c312054dfb88 100644 --- a/arch/arm/mach-pxa/tosa.c +++ b/arch/arm/mach-pxa/tosa.c @@ -98,6 +98,9 @@ struct platform_device tosascoop_jc_device = { .resource = tosa_scoop_jc_resources, }; +/* + * PCMCIA + */ static struct scoop_pcmcia_dev tosa_pcmcia_scoop[] = { { .dev = &tosascoop_device.dev, @@ -111,16 +114,155 @@ static struct scoop_pcmcia_dev tosa_pcmcia_scoop[] = { }, }; +static void tosa_pcmcia_init(void) +{ + /* Setup default state of GPIO outputs + before we enable them as outputs. */ + GPSR(GPIO48_nPOE) = GPIO_bit(GPIO48_nPOE) | + GPIO_bit(GPIO49_nPWE) | GPIO_bit(GPIO50_nPIOR) | + GPIO_bit(GPIO51_nPIOW) | GPIO_bit(GPIO52_nPCE_1) | + GPIO_bit(GPIO53_nPCE_2); + + pxa_gpio_mode(GPIO48_nPOE_MD); + pxa_gpio_mode(GPIO49_nPWE_MD); + pxa_gpio_mode(GPIO50_nPIOR_MD); + pxa_gpio_mode(GPIO51_nPIOW_MD); + pxa_gpio_mode(GPIO55_nPREG_MD); + pxa_gpio_mode(GPIO56_nPWAIT_MD); + pxa_gpio_mode(GPIO57_nIOIS16_MD); + pxa_gpio_mode(GPIO52_nPCE_1_MD); + pxa_gpio_mode(GPIO53_nPCE_2_MD); + pxa_gpio_mode(GPIO54_pSKTSEL_MD); +} + +static struct scoop_pcmcia_config tosa_pcmcia_config = { + .devs = &tosa_pcmcia_scoop[0], + .num_devs = 2, + .pcmcia_init = tosa_pcmcia_init, +}; + +/* + * USB Device Controller + */ +static void tosa_udc_command(int cmd) +{ + switch(cmd) { + case PXA2XX_UDC_CMD_CONNECT: + set_scoop_gpio(&tosascoop_jc_device.dev,TOSA_SCOOP_JC_USB_PULLUP); + break; + case PXA2XX_UDC_CMD_DISCONNECT: + reset_scoop_gpio(&tosascoop_jc_device.dev,TOSA_SCOOP_JC_USB_PULLUP); + break; + } +} + +static int tosa_udc_is_connected(void) +{ + return ((GPLR(TOSA_GPIO_USB_IN) & GPIO_bit(TOSA_GPIO_USB_IN)) == 0); +} + + +static struct pxa2xx_udc_mach_info udc_info __initdata = { + .udc_command = tosa_udc_command, + .udc_is_connected = tosa_udc_is_connected, +}; + +/* + * MMC/SD Device + */ +static struct pxamci_platform_data tosa_mci_platform_data; + +static int tosa_mci_init(struct device *dev, irqreturn_t (*tosa_detect_int)(int, void *, struct pt_regs *), void *data) +{ + int err; + + /* setup GPIO for PXA25x MMC controller */ + pxa_gpio_mode(GPIO6_MMCCLK_MD); + pxa_gpio_mode(GPIO8_MMCCS0_MD); + pxa_gpio_mode(TOSA_GPIO_nSD_DETECT | GPIO_IN); + + tosa_mci_platform_data.detect_delay = msecs_to_jiffies(250); + + err = request_irq(TOSA_IRQ_GPIO_nSD_DETECT, tosa_detect_int, SA_INTERRUPT, + "MMC/SD card detect", data); + if (err) { + printk(KERN_ERR "tosa_mci_init: MMC/SD: can't request MMC card detect IRQ\n"); + return -1; + } + + set_irq_type(TOSA_IRQ_GPIO_nSD_DETECT, IRQT_BOTHEDGE); + + return 0; +} + +static void tosa_mci_setpower(struct device *dev, unsigned int vdd) +{ + struct pxamci_platform_data* p_d = dev->platform_data; + + if (( 1 << vdd) & p_d->ocr_mask) { + set_scoop_gpio(&tosascoop_device.dev,TOSA_SCOOP_PWR_ON); + } else { + reset_scoop_gpio(&tosascoop_device.dev,TOSA_SCOOP_PWR_ON); + } +} + +static int tosa_mci_get_ro(struct device *dev) +{ + return (read_scoop_reg(&tosascoop_device.dev, SCOOP_GPWR)&TOSA_SCOOP_SD_WP); +} + +static void tosa_mci_exit(struct device *dev, void *data) +{ + free_irq(TOSA_IRQ_GPIO_nSD_DETECT, data); +} + +static struct pxamci_platform_data tosa_mci_platform_data = { + .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, + .init = tosa_mci_init, + .get_ro = tosa_mci_get_ro, + .setpower = tosa_mci_setpower, + .exit = tosa_mci_exit, +}; + +/* + * Irda + */ +static void tosa_irda_transceiver_mode(struct device *dev, int mode) +{ + if (mode & IR_OFF) { + reset_scoop_gpio(&tosascoop_device.dev,TOSA_SCOOP_IR_POWERDWN); + pxa_gpio_mode(GPIO47_STTXD|GPIO_DFLT_LOW); + pxa_gpio_mode(GPIO47_STTXD|GPIO_OUT); + } else { + pxa_gpio_mode(GPIO47_STTXD_MD); + set_scoop_gpio(&tosascoop_device.dev,TOSA_SCOOP_IR_POWERDWN); + } +} + +static struct pxaficp_platform_data tosa_ficp_platform_data = { + .transceiver_cap = IR_SIRMODE | IR_OFF, + .transceiver_mode = tosa_irda_transceiver_mode, +}; + +/* + * Tosa Keyboard + */ +static struct platform_device tosakbd_device = { + .name = "tosa-keyboard", + .id = -1, +}; static struct platform_device *devices[] __initdata = { &tosascoop_device, &tosascoop_jc_device, + &tosakbd_device, }; static void __init tosa_init(void) { pxa_gpio_mode(TOSA_GPIO_ON_RESET | GPIO_IN); pxa_gpio_mode(TOSA_GPIO_TC6393_INT | GPIO_IN); + pxa_gpio_mode(TOSA_GPIO_USB_IN | GPIO_IN); /* setup sleep mode values */ PWER = 0x00000002; @@ -131,13 +273,15 @@ static void __init tosa_init(void) PGSR2 = 0x00014000; PCFR |= PCFR_OPDE; - // enable batt_fault + /* enable batt_fault */ PMCR = 0x01; - platform_add_devices(devices, ARRAY_SIZE(devices)); + pxa_set_mci_info(&tosa_mci_platform_data); + pxa_set_udc_info(&udc_info); + pxa_set_ficp_info(&tosa_ficp_platform_data); + platform_scoop_config = &tosa_pcmcia_config; - scoop_num = 2; - scoop_devs = &tosa_pcmcia_scoop[0]; + platform_add_devices(devices, ARRAY_SIZE(devices)); } static void __init fixup_tosa(struct machine_desc *desc, diff --git a/arch/arm/mach-realview/Kconfig b/arch/arm/mach-realview/Kconfig index 4b63dc9eabfe..129976866d47 100644 --- a/arch/arm/mach-realview/Kconfig +++ b/arch/arm/mach-realview/Kconfig @@ -8,4 +8,13 @@ config MACH_REALVIEW_EB help Include support for the ARM(R) RealView Emulation Baseboard platform. +config REALVIEW_MPCORE + bool "Support MPcore tile" + depends on MACH_REALVIEW_EB + help + Enable support for the MPCore tile on the Realview platform. + Since there are device address and interrupt differences, a + kernel built with this option enabled is not compatible with + other tiles. + endmenu diff --git a/arch/arm/mach-realview/Makefile b/arch/arm/mach-realview/Makefile index 8d37ea1605fd..36e76ba937fc 100644 --- a/arch/arm/mach-realview/Makefile +++ b/arch/arm/mach-realview/Makefile @@ -4,3 +4,6 @@ obj-y := core.o clock.o obj-$(CONFIG_MACH_REALVIEW_EB) += realview_eb.o +obj-$(CONFIG_SMP) += platsmp.o headsmp.o +obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o +obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c index 482eb512ebe8..e2c6fa23d3cd 100644 --- a/arch/arm/mach-realview/core.c +++ b/arch/arm/mach-realview/core.c @@ -550,6 +550,11 @@ static irqreturn_t realview_timer_interrupt(int irq, void *dev_id, struct pt_reg timer_tick(regs); +#if defined(CONFIG_SMP) && !defined(CONFIG_LOCAL_TIMERS) + smp_send_timer(); + update_process_times(user_mode(regs)); +#endif + write_sequnlock(&xtime_lock); return IRQ_HANDLED; diff --git a/arch/arm/mach-realview/core.h b/arch/arm/mach-realview/core.h index 575599db74db..d83e8bad2038 100644 --- a/arch/arm/mach-realview/core.h +++ b/arch/arm/mach-realview/core.h @@ -23,6 +23,7 @@ #define __ASM_ARCH_REALVIEW_H #include <asm/hardware/amba.h> +#include <asm/leds.h> #include <asm/io.h> #define __io_address(n) __io(IO_ADDRESS(n)) diff --git a/arch/arm/mach-realview/headsmp.S b/arch/arm/mach-realview/headsmp.S new file mode 100644 index 000000000000..4075473cf68a --- /dev/null +++ b/arch/arm/mach-realview/headsmp.S @@ -0,0 +1,39 @@ +/* + * linux/arch/arm/mach-realview/headsmp.S + * + * Copyright (c) 2003 ARM Limited + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/linkage.h> +#include <linux/init.h> + + __INIT + +/* + * Realview specific entry point for secondary CPUs. This provides + * a "holding pen" into which all secondary cores are held until we're + * ready for them to initialise. + */ +ENTRY(realview_secondary_startup) + mrc p15, 0, r0, c0, c0, 5 + and r0, r0, #15 + adr r4, 1f + ldmia r4, {r5, r6} + sub r4, r4, r5 + add r6, r6, r4 +pen: ldr r7, [r6] + cmp r7, r0 + bne pen + + /* + * we've been released from the holding pen: secondary_stack + * should now contain the SVC stack for this core + */ + b secondary_startup + +1: .long . + .long pen_release diff --git a/arch/arm/mach-realview/hotplug.c b/arch/arm/mach-realview/hotplug.c new file mode 100644 index 000000000000..09748cbcd10e --- /dev/null +++ b/arch/arm/mach-realview/hotplug.c @@ -0,0 +1,138 @@ +/* + * linux/arch/arm/mach-realview/hotplug.c + * + * Copyright (C) 2002 ARM Ltd. + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/smp.h> +#include <linux/completion.h> + +extern volatile int pen_release; + +static DECLARE_COMPLETION(cpu_killed); + +static inline void cpu_enter_lowpower(void) +{ + unsigned int v; + + asm volatile( "mcr p15, 0, %1, c7, c14, 0\n" + " mcr p15, 0, %1, c7, c5, 0\n" + " mcr p15, 0, %1, c7, c10, 4\n" + /* + * Turn off coherency + */ + " mrc p15, 0, %0, c1, c0, 1\n" + " bic %0, %0, #0x20\n" + " mcr p15, 0, %0, c1, c0, 1\n" + " mrc p15, 0, %0, c1, c0, 0\n" + " bic %0, %0, #0x04\n" + " mcr p15, 0, %0, c1, c0, 0\n" + : "=&r" (v) + : "r" (0) + : "cc"); +} + +static inline void cpu_leave_lowpower(void) +{ + unsigned int v; + + asm volatile( "mrc p15, 0, %0, c1, c0, 0\n" + " orr %0, %0, #0x04\n" + " mcr p15, 0, %0, c1, c0, 0\n" + " mrc p15, 0, %0, c1, c0, 1\n" + " orr %0, %0, #0x20\n" + " mcr p15, 0, %0, c1, c0, 1\n" + : "=&r" (v) + : + : "cc"); +} + +static inline void platform_do_lowpower(unsigned int cpu) +{ + /* + * there is no power-control hardware on this platform, so all + * we can do is put the core into WFI; this is safe as the calling + * code will have already disabled interrupts + */ + for (;;) { + /* + * here's the WFI + */ + asm(".word 0xe320f003\n" + : + : + : "memory", "cc"); + + if (pen_release == cpu) { + /* + * OK, proper wakeup, we're done + */ + break; + } + + /* + * getting here, means that we have come out of WFI without + * having been woken up - this shouldn't happen + * + * The trouble is, letting people know about this is not really + * possible, since we are currently running incoherently, and + * therefore cannot safely call printk() or anything else + */ +#ifdef DEBUG + printk("CPU%u: spurious wakeup call\n", cpu); +#endif + } +} + +int platform_cpu_kill(unsigned int cpu) +{ + return wait_for_completion_timeout(&cpu_killed, 5000); +} + +/* + * platform-specific code to shutdown a CPU + * + * Called with IRQs disabled + */ +void platform_cpu_die(unsigned int cpu) +{ +#ifdef DEBUG + unsigned int this_cpu = hard_smp_processor_id(); + + if (cpu != this_cpu) { + printk(KERN_CRIT "Eek! platform_cpu_die running on %u, should be %u\n", + this_cpu, cpu); + BUG(); + } +#endif + + printk(KERN_NOTICE "CPU%u: shutdown\n", cpu); + complete(&cpu_killed); + + /* + * we're ready for shutdown now, so do it + */ + cpu_enter_lowpower(); + platform_do_lowpower(cpu); + + /* + * bring this CPU back into the world of cache + * coherency, and then restore interrupts + */ + cpu_leave_lowpower(); +} + +int mach_cpu_disable(unsigned int cpu) +{ + /* + * we don't allow CPU 0 to be shutdown (it is still too special + * e.g. clock tick interrupts) + */ + return cpu == 0 ? -EPERM : 0; +} diff --git a/arch/arm/mach-realview/localtimer.c b/arch/arm/mach-realview/localtimer.c new file mode 100644 index 000000000000..5e917e37d095 --- /dev/null +++ b/arch/arm/mach-realview/localtimer.c @@ -0,0 +1,130 @@ +/* + * linux/arch/arm/mach-realview/localtimer.c + * + * Copyright (C) 2002 ARM Ltd. + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/smp.h> + +#include <asm/mach/time.h> +#include <asm/hardware/arm_twd.h> +#include <asm/hardware/gic.h> +#include <asm/hardware.h> +#include <asm/io.h> +#include <asm/irq.h> + +#include "core.h" + +#define TWD_BASE(cpu) (__io_address(REALVIEW_TWD_BASE) + \ + ((cpu) * REALVIEW_TWD_SIZE)) + +static unsigned long mpcore_timer_rate; + +/* + * local_timer_ack: checks for a local timer interrupt. + * + * If a local timer interrupt has occured, acknowledge and return 1. + * Otherwise, return 0. + */ +int local_timer_ack(void) +{ + void __iomem *base = TWD_BASE(smp_processor_id()); + + if (__raw_readl(base + TWD_TIMER_INTSTAT)) { + __raw_writel(1, base + TWD_TIMER_INTSTAT); + return 1; + } + + return 0; +} + +void __cpuinit local_timer_setup(unsigned int cpu) +{ + void __iomem *base = TWD_BASE(cpu); + unsigned int load, offset; + u64 waitjiffies; + unsigned int count; + + /* + * If this is the first time round, we need to work out how fast + * the timer ticks + */ + if (mpcore_timer_rate == 0) { + printk("Calibrating local timer... "); + + /* Wait for a tick to start */ + waitjiffies = get_jiffies_64() + 1; + + while (get_jiffies_64() < waitjiffies) + udelay(10); + + /* OK, now the tick has started, let's get the timer going */ + waitjiffies += 5; + + /* enable, no interrupt or reload */ + __raw_writel(0x1, base + TWD_TIMER_CONTROL); + + /* maximum value */ + __raw_writel(0xFFFFFFFFU, base + TWD_TIMER_COUNTER); + + while (get_jiffies_64() < waitjiffies) + udelay(10); + + count = __raw_readl(base + TWD_TIMER_COUNTER); + + mpcore_timer_rate = (0xFFFFFFFFU - count) * (HZ / 5); + + printk("%lu.%02luMHz.\n", mpcore_timer_rate / 1000000, + (mpcore_timer_rate / 100000) % 100); + } + + load = mpcore_timer_rate / HZ; + + __raw_writel(load, base + TWD_TIMER_LOAD); + __raw_writel(0x7, base + TWD_TIMER_CONTROL); + + /* + * Now maneuver our local tick into the right part of the jiffy. + * Start by working out where within the tick our local timer + * interrupt should go. + */ + offset = ((mpcore_timer_rate / HZ) / (NR_CPUS + 1)) * (cpu + 1); + + /* + * gettimeoffset() will return a number of us since the last tick. + * Convert this number of us to a local timer tick count. + * Be careful of integer overflow whilst keeping maximum precision. + * + * with HZ=100 and 1MHz (fpga) ~ 1GHz processor: + * load = 1 ~ 10,000 + * mpcore_timer_rate/10000 = 100 ~ 100,000 + * + * so the multiply value will be less than 10^9 always. + */ + load = (system_timer->offset() * (mpcore_timer_rate / 10000)) / 100; + + /* Add on our offset to get the load value */ + load = (load + offset) % (mpcore_timer_rate / HZ); + + __raw_writel(load, base + TWD_TIMER_COUNTER); + + /* Make sure our local interrupt controller has this enabled */ + __raw_writel(1 << IRQ_LOCALTIMER, + __io_address(REALVIEW_GIC_DIST_BASE) + GIC_DIST_ENABLE_SET); +} + +/* + * take a local timer down + */ +void __cpuexit local_timer_stop(unsigned int cpu) +{ + __raw_writel(0, TWD_BASE(cpu) + TWD_TIMER_CONTROL); +} diff --git a/arch/arm/mach-realview/platsmp.c b/arch/arm/mach-realview/platsmp.c new file mode 100644 index 000000000000..0c7d4ac9a7b3 --- /dev/null +++ b/arch/arm/mach-realview/platsmp.c @@ -0,0 +1,200 @@ +/* + * linux/arch/arm/mach-realview/platsmp.c + * + * Copyright (C) 2002 ARM Ltd. + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/smp.h> + +#include <asm/cacheflush.h> +#include <asm/hardware/arm_scu.h> +#include <asm/hardware.h> + +#include "core.h" + +extern void realview_secondary_startup(void); + +/* + * control for which core is the next to come out of the secondary + * boot "holding pen" + */ +volatile int __cpuinitdata pen_release = -1; + +static unsigned int __init get_core_count(void) +{ + unsigned int ncores; + + ncores = __raw_readl(__io_address(REALVIEW_MPCORE_SCU_BASE) + SCU_CONFIG); + + return (ncores & 0x03) + 1; +} + +static DEFINE_SPINLOCK(boot_lock); + +void __cpuinit platform_secondary_init(unsigned int cpu) +{ + /* + * the primary core may have used a "cross call" soft interrupt + * to get this processor out of WFI in the BootMonitor - make + * sure that we are no longer being sent this soft interrupt + */ + smp_cross_call_done(cpumask_of_cpu(cpu)); + + /* + * if any interrupts are already enabled for the primary + * core (e.g. timer irq), then they will not have been enabled + * for us: do so + */ + gic_cpu_init(__io_address(REALVIEW_GIC_CPU_BASE)); + + /* + * let the primary processor know we're out of the + * pen, then head off into the C entry point + */ + pen_release = -1; + + /* + * Synchronise with the boot thread. + */ + spin_lock(&boot_lock); + spin_unlock(&boot_lock); +} + +int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) +{ + unsigned long timeout; + + /* + * set synchronisation state between this boot processor + * and the secondary one + */ + spin_lock(&boot_lock); + + /* + * The secondary processor is waiting to be released from + * the holding pen - release it, then wait for it to flag + * that it has been released by resetting pen_release. + * + * Note that "pen_release" is the hardware CPU ID, whereas + * "cpu" is Linux's internal ID. + */ + pen_release = cpu; + flush_cache_all(); + + /* + * XXX + * + * This is a later addition to the booting protocol: the + * bootMonitor now puts secondary cores into WFI, so + * poke_milo() no longer gets the cores moving; we need + * to send a soft interrupt to wake the secondary core. + * Use smp_cross_call() for this, since there's little + * point duplicating the code here + */ + smp_cross_call(cpumask_of_cpu(cpu)); + + timeout = jiffies + (1 * HZ); + while (time_before(jiffies, timeout)) { + if (pen_release == -1) + break; + + udelay(10); + } + + /* + * now the secondary core is starting up let it run its + * calibrations, then wait for it to finish + */ + spin_unlock(&boot_lock); + + return pen_release != -1 ? -ENOSYS : 0; +} + +static void __init poke_milo(void) +{ + extern void secondary_startup(void); + + /* nobody is to be released from the pen yet */ + pen_release = -1; + + /* + * write the address of secondary startup into the system-wide + * flags register, then clear the bottom two bits, which is what + * BootMonitor is waiting for + */ +#if 1 +#define REALVIEW_SYS_FLAGSS_OFFSET 0x30 + __raw_writel(virt_to_phys(realview_secondary_startup), + __io_address(REALVIEW_SYS_BASE) + + REALVIEW_SYS_FLAGSS_OFFSET); +#define REALVIEW_SYS_FLAGSC_OFFSET 0x34 + __raw_writel(3, + __io_address(REALVIEW_SYS_BASE) + + REALVIEW_SYS_FLAGSC_OFFSET); +#endif + + mb(); +} + +void __init smp_prepare_cpus(unsigned int max_cpus) +{ + unsigned int ncores = get_core_count(); + unsigned int cpu = smp_processor_id(); + int i; + + /* sanity check */ + if (ncores == 0) { + printk(KERN_ERR + "Realview: strange CM count of 0? Default to 1\n"); + + ncores = 1; + } + + if (ncores > NR_CPUS) { + printk(KERN_WARNING + "Realview: no. of cores (%d) greater than configured " + "maximum of %d - clipping\n", + ncores, NR_CPUS); + ncores = NR_CPUS; + } + + smp_store_cpu_info(cpu); + + /* + * are we trying to boot more cores than exist? + */ + if (max_cpus > ncores) + max_cpus = ncores; + + /* + * Enable the local timer for primary CPU + */ + local_timer_setup(cpu); + + /* + * Initialise the possible/present maps. + * cpu_possible_map describes the set of CPUs which may be present + * cpu_present_map describes the set of CPUs populated + */ + for (i = 0; i < max_cpus; i++) { + cpu_set(i, cpu_possible_map); + cpu_set(i, cpu_present_map); + } + + /* + * Do we need any more CPUs? If so, then let them know where + * to start. Note that, on modern versions of MILO, the "poke" + * doesn't actually do anything until each individual core is + * sent a soft interrupt to get it out of WFI + */ + if (max_cpus > 1) + poke_milo(); +} diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c index 267bb07e39b7..7dc32503fdf2 100644 --- a/arch/arm/mach-realview/realview_eb.c +++ b/arch/arm/mach-realview/realview_eb.c @@ -136,6 +136,11 @@ static struct amba_device *amba_devs[] __initdata = { static void __init gic_init_irq(void) { +#ifdef CONFIG_REALVIEW_MPCORE + writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK)); + writel(0x008003c0, __io_address(REALVIEW_SYS_BASE) + 0xd8); + writel(0x00000000, __io_address(REALVIEW_SYS_LOCK)); +#endif gic_dist_init(__io_address(REALVIEW_GIC_DIST_BASE)); gic_cpu_init(__io_address(REALVIEW_GIC_CPU_BASE)); } diff --git a/arch/arm/mach-s3c2410/Kconfig b/arch/arm/mach-s3c2410/Kconfig index c796bcdd6158..0b9d7ca49ec1 100644 --- a/arch/arm/mach-s3c2410/Kconfig +++ b/arch/arm/mach-s3c2410/Kconfig @@ -121,6 +121,14 @@ config S3C2410_BOOT_WATCHDOG system resets depends on the value of PCLK. The timeout on an 200MHz s3c2410 should be about 30 seconds. +config S3C2410_BOOT_ERROR_RESET + bool "S3C2410 Reboot on decompression error" + depends on ARCH_S3C2410 + help + Say y here to use the watchdog to reset the system if the + kernel decompressor detects an error during decompression. + + comment "S3C2410 Setup" config S3C2410_DMA diff --git a/arch/arm/mach-s3c2410/mach-anubis.c b/arch/arm/mach-s3c2410/mach-anubis.c index 8390b685c2b6..0f81fc0c2f7f 100644 --- a/arch/arm/mach-s3c2410/mach-anubis.c +++ b/arch/arm/mach-s3c2410/mach-anubis.c @@ -56,8 +56,16 @@ static struct map_desc anubis_iodesc[] __initdata = { /* ISA IO areas */ - { (u32)S3C24XX_VA_ISA_BYTE, 0x0, SZ_16M, MT_DEVICE }, - { (u32)S3C24XX_VA_ISA_WORD, 0x0, SZ_16M, MT_DEVICE }, + { + .virtual = (u32)S3C24XX_VA_ISA_BYTE, + .pfn = __phys_to_pfn(0x0), + .length = SZ_4M, + .type = MT_DEVICE + }, { + .virtual = (u32)S3C24XX_VA_ISA_WORD, + .pfn = __phys_to_pfn(0x0), + .length = SZ_4M, MT_DEVICE + }, /* we could possibly compress the next set down into a set of smaller tables * pagetables, but that would mean using an L2 section, and it still means @@ -66,16 +74,41 @@ static struct map_desc anubis_iodesc[] __initdata = { /* CPLD control registers */ - { (u32)ANUBIS_VA_CTRL1, ANUBIS_PA_CTRL1, SZ_4K, MT_DEVICE }, - { (u32)ANUBIS_VA_CTRL2, ANUBIS_PA_CTRL2, SZ_4K, MT_DEVICE }, + { + .virtual = (u32)ANUBIS_VA_CTRL1, + .pfn = __phys_to_pfn(ANUBIS_PA_CTRL1), + .length = SZ_4K, + .type = MT_DEVICE + }, { + .virtual = (u32)ANUBIS_VA_CTRL2, + .pfn = __phys_to_pfn(ANUBIS_PA_CTRL2), + .length = SZ_4K, + .type =MT_DEVICE + }, /* IDE drives */ - { (u32)ANUBIS_IDEPRI, S3C2410_CS3, SZ_1M, MT_DEVICE }, - { (u32)ANUBIS_IDEPRIAUX, S3C2410_CS3+(1<<26), SZ_1M, MT_DEVICE }, - - { (u32)ANUBIS_IDESEC, S3C2410_CS4, SZ_1M, MT_DEVICE }, - { (u32)ANUBIS_IDESECAUX, S3C2410_CS4+(1<<26), SZ_1M, MT_DEVICE }, + { + .virtual = (u32)ANUBIS_IDEPRI, + .pfn = __phys_to_pfn(S3C2410_CS3), + .length = SZ_1M, + .type = MT_DEVICE + }, { + .virtual = (u32)ANUBIS_IDEPRIAUX, + .pfn = __phys_to_pfn(S3C2410_CS3+(1<<26)), + .length = SZ_1M, + .type = MT_DEVICE + }, { + .virtual = (u32)ANUBIS_IDESEC, + .pfn = __phys_to_pfn(S3C2410_CS4), + .length = SZ_1M, + .type = MT_DEVICE + }, { + .virtual = (u32)ANUBIS_IDESECAUX, + .pfn = __phys_to_pfn(S3C2410_CS4+(1<<26)), + .length = SZ_1M, + .type = MT_DEVICE + }, }; #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK diff --git a/arch/arm/mach-s3c2410/mach-bast.c b/arch/arm/mach-s3c2410/mach-bast.c index 0b71c896bbd1..1be2567a7486 100644 --- a/arch/arm/mach-s3c2410/mach-bast.c +++ b/arch/arm/mach-s3c2410/mach-bast.c @@ -89,32 +89,63 @@ /* macros to modify the physical addresses for io space */ -#define PA_CS2(item) ((item) + S3C2410_CS2) -#define PA_CS3(item) ((item) + S3C2410_CS3) -#define PA_CS4(item) ((item) + S3C2410_CS4) -#define PA_CS5(item) ((item) + S3C2410_CS5) +#define PA_CS2(item) (__phys_to_pfn((item) + S3C2410_CS2)) +#define PA_CS3(item) (__phys_to_pfn((item) + S3C2410_CS3)) +#define PA_CS4(item) (__phys_to_pfn((item) + S3C2410_CS4)) +#define PA_CS5(item) (__phys_to_pfn((item) + S3C2410_CS5)) static struct map_desc bast_iodesc[] __initdata = { /* ISA IO areas */ - - { (u32)S3C24XX_VA_ISA_BYTE, PA_CS2(BAST_PA_ISAIO), SZ_16M, MT_DEVICE }, - { (u32)S3C24XX_VA_ISA_WORD, PA_CS3(BAST_PA_ISAIO), SZ_16M, MT_DEVICE }, - - /* we could possibly compress the next set down into a set of smaller tables - * pagetables, but that would mean using an L2 section, and it still means - * we cannot actually feed the same register to an LDR due to 16K spacing - */ - + { + .virtual = (u32)S3C24XX_VA_ISA_BYTE, + .pfn = PA_CS2(BAST_PA_ISAIO), + .length = SZ_16M, + .type = MT_DEVICE, + }, { + .virtual = (u32)S3C24XX_VA_ISA_WORD, + .pfn = PA_CS3(BAST_PA_ISAIO), + .length = SZ_16M, + .type = MT_DEVICE, + }, /* bast CPLD control registers, and external interrupt controls */ - { (u32)BAST_VA_CTRL1, BAST_PA_CTRL1, SZ_1M, MT_DEVICE }, - { (u32)BAST_VA_CTRL2, BAST_PA_CTRL2, SZ_1M, MT_DEVICE }, - { (u32)BAST_VA_CTRL3, BAST_PA_CTRL3, SZ_1M, MT_DEVICE }, - { (u32)BAST_VA_CTRL4, BAST_PA_CTRL4, SZ_1M, MT_DEVICE }, - + { + .virtual = (u32)BAST_VA_CTRL1, + .pfn = __phys_to_pfn(BAST_PA_CTRL1), + .length = SZ_1M, + .type = MT_DEVICE, + }, { + .virtual = (u32)BAST_VA_CTRL2, + .pfn = __phys_to_pfn(BAST_PA_CTRL2), + .length = SZ_1M, + .type = MT_DEVICE, + }, { + .virtual = (u32)BAST_VA_CTRL3, + .pfn = __phys_to_pfn(BAST_PA_CTRL3), + .length = SZ_1M, + .type = MT_DEVICE, + }, { + .virtual = (u32)BAST_VA_CTRL4, + .pfn = __phys_to_pfn(BAST_PA_CTRL4), + .length = SZ_1M, + .type = MT_DEVICE, + }, /* PC104 IRQ mux */ - { (u32)BAST_VA_PC104_IRQREQ, BAST_PA_PC104_IRQREQ, SZ_1M, MT_DEVICE }, - { (u32)BAST_VA_PC104_IRQRAW, BAST_PA_PC104_IRQRAW, SZ_1M, MT_DEVICE }, - { (u32)BAST_VA_PC104_IRQMASK, BAST_PA_PC104_IRQMASK, SZ_1M, MT_DEVICE }, + { + .virtual = (u32)BAST_VA_PC104_IRQREQ, + .pfn = __phys_to_pfn(BAST_PA_PC104_IRQREQ), + .length = SZ_1M, + .type = MT_DEVICE, + }, { + .virtual = (u32)BAST_VA_PC104_IRQRAW, + .pfn = __phys_to_pfn(BAST_PA_PC104_IRQRAW), + .length = SZ_1M, + .type = MT_DEVICE, + }, { + .virtual = (u32)BAST_VA_PC104_IRQMASK, + .pfn = __phys_to_pfn(BAST_PA_PC104_IRQMASK), + .length = SZ_1M, + .type = MT_DEVICE, + }, /* peripheral space... one for each of fast/slow/byte/16bit */ /* note, ide is only decoded in word space, even though some registers diff --git a/arch/arm/mach-s3c2410/mach-rx3715.c b/arch/arm/mach-s3c2410/mach-rx3715.c index 24d69019a843..f8d86d1e16b6 100644 --- a/arch/arm/mach-s3c2410/mach-rx3715.c +++ b/arch/arm/mach-s3c2410/mach-rx3715.c @@ -56,8 +56,17 @@ static struct map_desc rx3715_iodesc[] __initdata = { /* dump ISA space somewhere unused */ - { (u32)S3C24XX_VA_ISA_WORD, S3C2410_CS3, SZ_16M, MT_DEVICE }, - { (u32)S3C24XX_VA_ISA_BYTE, S3C2410_CS3, SZ_16M, MT_DEVICE }, + { + .virtual = (u32)S3C24XX_VA_ISA_WORD, + .pfn = __phys_to_pfn(S3C2410_CS3), + .length = SZ_1M, + .type = MT_DEVICE, + }, { + .virtual = (u32)S3C24XX_VA_ISA_BYTE, + .pfn = __phys_to_pfn(S3C2410_CS3), + .length = SZ_1M, + .type = MT_DEVICE, + }, }; diff --git a/arch/arm/mach-s3c2410/mach-smdk2440.c b/arch/arm/mach-s3c2410/mach-smdk2440.c index d666c621ad06..4e31118533e6 100644 --- a/arch/arm/mach-s3c2410/mach-smdk2440.c +++ b/arch/arm/mach-s3c2410/mach-smdk2440.c @@ -58,8 +58,27 @@ static struct map_desc smdk2440_iodesc[] __initdata = { /* ISA IO Space map (memory space selected by A24) */ - { (u32)S3C24XX_VA_ISA_WORD, S3C2410_CS2, SZ_16M, MT_DEVICE }, - { (u32)S3C24XX_VA_ISA_BYTE, S3C2410_CS2, SZ_16M, MT_DEVICE }, + { + .virtual = (u32)S3C24XX_VA_ISA_WORD, + .pfn = __phys_to_pfn(S3C2410_CS2), + .length = 0x10000, + .type = MT_DEVICE, + }, { + .virtual = (u32)S3C24XX_VA_ISA_WORD + 0x10000, + .pfn = __phys_to_pfn(S3C2410_CS2 + (1<<24)), + .length = SZ_4M, + .type = MT_DEVICE, + }, { + .virtual = (u32)S3C24XX_VA_ISA_BYTE, + .pfn = __phys_to_pfn(S3C2410_CS2), + .length = 0x10000, + .type = MT_DEVICE, + }, { + .virtual = (u32)S3C24XX_VA_ISA_BYTE + 0x10000, + .pfn = __phys_to_pfn(S3C2410_CS2 + (1<<24)), + .length = SZ_4M, + .type = MT_DEVICE, + } }; #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK diff --git a/arch/arm/mach-s3c2410/mach-vr1000.c b/arch/arm/mach-s3c2410/mach-vr1000.c index 46b259673c18..ae7e099bf6c8 100644 --- a/arch/arm/mach-s3c2410/mach-vr1000.c +++ b/arch/arm/mach-s3c2410/mach-vr1000.c @@ -74,27 +74,47 @@ /* macros to modify the physical addresses for io space */ -#define PA_CS2(item) ((item) + S3C2410_CS2) -#define PA_CS3(item) ((item) + S3C2410_CS3) -#define PA_CS4(item) ((item) + S3C2410_CS4) -#define PA_CS5(item) ((item) + S3C2410_CS5) +#define PA_CS2(item) (__phys_to_pfn((item) + S3C2410_CS2)) +#define PA_CS3(item) (__phys_to_pfn((item) + S3C2410_CS3)) +#define PA_CS4(item) (__phys_to_pfn((item) + S3C2410_CS4)) +#define PA_CS5(item) (__phys_to_pfn((item) + S3C2410_CS5)) static struct map_desc vr1000_iodesc[] __initdata = { /* ISA IO areas */ - - { (u32)S3C24XX_VA_ISA_BYTE, PA_CS2(BAST_PA_ISAIO), SZ_16M, MT_DEVICE }, - { (u32)S3C24XX_VA_ISA_WORD, PA_CS3(BAST_PA_ISAIO), SZ_16M, MT_DEVICE }, - - /* we could possibly compress the next set down into a set of smaller tables - * pagetables, but that would mean using an L2 section, and it still means - * we cannot actually feed the same register to an LDR due to 16K spacing - */ - - /* bast CPLD control registers, and external interrupt controls */ - { (u32)VR1000_VA_CTRL1, VR1000_PA_CTRL1, SZ_1M, MT_DEVICE }, - { (u32)VR1000_VA_CTRL2, VR1000_PA_CTRL2, SZ_1M, MT_DEVICE }, - { (u32)VR1000_VA_CTRL3, VR1000_PA_CTRL3, SZ_1M, MT_DEVICE }, - { (u32)VR1000_VA_CTRL4, VR1000_PA_CTRL4, SZ_1M, MT_DEVICE }, + { + .virtual = (u32)S3C24XX_VA_ISA_BYTE, + .pfn = PA_CS2(BAST_PA_ISAIO), + .length = SZ_16M, + .type = MT_DEVICE, + }, { + .virtual = (u32)S3C24XX_VA_ISA_WORD, + .pfn = PA_CS3(BAST_PA_ISAIO), + .length = SZ_16M, + .type = MT_DEVICE, + }, + + /* CPLD control registers, and external interrupt controls */ + { + .virtual = (u32)VR1000_VA_CTRL1, + .pfn = __phys_to_pfn(VR1000_PA_CTRL1), + .length = SZ_1M, + .type = MT_DEVICE, + }, { + .virtual = (u32)VR1000_VA_CTRL2, + .pfn = __phys_to_pfn(VR1000_PA_CTRL2), + .length = SZ_1M, + .type = MT_DEVICE, + }, { + .virtual = (u32)VR1000_VA_CTRL3, + .pfn = __phys_to_pfn(VR1000_PA_CTRL3), + .length = SZ_1M, + .type = MT_DEVICE, + }, { + .virtual = (u32)VR1000_VA_CTRL4, + .pfn = __phys_to_pfn(VR1000_PA_CTRL4), + .length = SZ_1M, + .type = MT_DEVICE, + }, /* peripheral space... one for each of fast/slow/byte/16bit */ /* note, ide is only decoded in word space, even though some registers diff --git a/arch/arm/mach-sa1100/time.c b/arch/arm/mach-sa1100/time.c index 47e0420623fc..e4b435e634e4 100644 --- a/arch/arm/mach-sa1100/time.c +++ b/arch/arm/mach-sa1100/time.c @@ -124,11 +124,13 @@ static void __init sa1100_timer_init(void) tv.tv_sec = sa1100_get_rtc_time(); do_settimeofday(&tv); - OSMR0 = 0; /* set initial match at 0 */ + OIER = 0; /* disable any timer interrupts */ + OSCR = LATCH*2; /* push OSCR out of the way */ + OSMR0 = LATCH; /* set initial match */ OSSR = 0xf; /* clear status on all timers */ setup_irq(IRQ_OST0, &sa1100_timer_irq); - OIER |= OIER_E0; /* enable match on timer 0 to cause interrupts */ - OSCR = 0; /* initialize free-running timer, force first match */ + OIER = OIER_E0; /* enable match on timer 0 to cause interrupts */ + OSCR = 0; /* initialize free-running timer */ } #ifdef CONFIG_NO_IDLE_HZ diff --git a/arch/arm/mm/mm-armv.c b/arch/arm/mm/mm-armv.c index fb5b40289de2..9e50127be635 100644 --- a/arch/arm/mm/mm-armv.c +++ b/arch/arm/mm/mm-armv.c @@ -354,7 +354,7 @@ void __init build_mem_type_table(void) { struct cachepolicy *cp; unsigned int cr = get_cr(); - unsigned int user_pgprot; + unsigned int user_pgprot, kern_pgprot; int cpu_arch = cpu_architecture(); int i; @@ -381,7 +381,7 @@ void __init build_mem_type_table(void) } cp = &cache_policies[cachepolicy]; - user_pgprot = cp->pte; + kern_pgprot = user_pgprot = cp->pte; /* * ARMv6 and above have extended page tables. @@ -393,6 +393,7 @@ void __init build_mem_type_table(void) */ mem_types[MT_MEMORY].prot_sect &= ~PMD_BIT4; mem_types[MT_ROM].prot_sect &= ~PMD_BIT4; + /* * Mark cache clean areas and XIP ROM read only * from SVC mode and no access from userspace. @@ -412,32 +413,47 @@ void __init build_mem_type_table(void) * (iow, non-global) */ user_pgprot |= L_PTE_ASID; + +#ifdef CONFIG_SMP + /* + * Mark memory with the "shared" attribute for SMP systems + */ + user_pgprot |= L_PTE_SHARED; + kern_pgprot |= L_PTE_SHARED; + mem_types[MT_MEMORY].prot_sect |= PMD_SECT_S; +#endif } + for (i = 0; i < 16; i++) { + unsigned long v = pgprot_val(protection_map[i]); + v = (v & ~(L_PTE_BUFFERABLE|L_PTE_CACHEABLE)) | user_pgprot; + protection_map[i] = __pgprot(v); + } + + mem_types[MT_LOW_VECTORS].prot_pte |= kern_pgprot; + mem_types[MT_HIGH_VECTORS].prot_pte |= kern_pgprot; + if (cpu_arch >= CPU_ARCH_ARMv5) { - mem_types[MT_LOW_VECTORS].prot_pte |= cp->pte & PTE_CACHEABLE; - mem_types[MT_HIGH_VECTORS].prot_pte |= cp->pte & PTE_CACHEABLE; +#ifndef CONFIG_SMP + /* + * Only use write-through for non-SMP systems + */ + mem_types[MT_LOW_VECTORS].prot_pte &= ~L_PTE_BUFFERABLE; + mem_types[MT_HIGH_VECTORS].prot_pte &= ~L_PTE_BUFFERABLE; +#endif } else { - mem_types[MT_LOW_VECTORS].prot_pte |= cp->pte; - mem_types[MT_HIGH_VECTORS].prot_pte |= cp->pte; mem_types[MT_MINICLEAN].prot_sect &= ~PMD_SECT_TEX(1); } + pgprot_kernel = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | + L_PTE_DIRTY | L_PTE_WRITE | + L_PTE_EXEC | kern_pgprot); + mem_types[MT_LOW_VECTORS].prot_l1 |= ecc_mask; mem_types[MT_HIGH_VECTORS].prot_l1 |= ecc_mask; mem_types[MT_MEMORY].prot_sect |= ecc_mask | cp->pmd; mem_types[MT_ROM].prot_sect |= cp->pmd; - for (i = 0; i < 16; i++) { - unsigned long v = pgprot_val(protection_map[i]); - v = (v & ~(PTE_BUFFERABLE|PTE_CACHEABLE)) | user_pgprot; - protection_map[i] = __pgprot(v); - } - - pgprot_kernel = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | - L_PTE_DIRTY | L_PTE_WRITE | - L_PTE_EXEC | cp->pte); - switch (cp->pmd) { case PMD_SECT_WT: mem_types[MT_CACHECLEAN].prot_sect |= PMD_SECT_WT; diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S index 9bb5fff406fb..92f3ca31b7b9 100644 --- a/arch/arm/mm/proc-v6.S +++ b/arch/arm/mm/proc-v6.S @@ -12,6 +12,7 @@ #include <linux/linkage.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> +#include <asm/hardware/arm_scu.h> #include <asm/procinfo.h> #include <asm/pgtable.h> @@ -112,6 +113,9 @@ ENTRY(cpu_v6_dcache_clean_area) ENTRY(cpu_v6_switch_mm) mov r2, #0 ldr r1, [r1, #MM_CONTEXT_ID] @ get mm->context.id +#ifdef CONFIG_SMP + orr r0, r0, #2 @ set shared pgtable +#endif mcr p15, 0, r2, c7, c5, 6 @ flush BTAC/BTB mcr p15, 0, r2, c7, c10, 4 @ drain write buffer mcr p15, 0, r0, c2, c0, 0 @ set TTB 0 @@ -140,7 +144,7 @@ ENTRY(cpu_v6_switch_mm) ENTRY(cpu_v6_set_pte) str r1, [r0], #-2048 @ linux version - bic r2, r1, #0x000007f0 + bic r2, r1, #0x000003f0 bic r2, r2, #0x00000003 orr r2, r2, #PTE_EXT_AP0 | 2 @@ -191,6 +195,23 @@ cpu_v6_name: * - cache type register is implemented */ __v6_setup: +#ifdef CONFIG_SMP + /* Set up the SCU on core 0 only */ + mrc p15, 0, r0, c0, c0, 5 @ CPU core number + ands r0, r0, #15 + moveq r0, #0x10000000 @ SCU_BASE + orreq r0, r0, #0x00100000 + ldreq r5, [r0, #SCU_CTRL] + orreq r5, r5, #1 + streq r5, [r0, #SCU_CTRL] + +#ifndef CONFIG_CPU_DCACHE_DISABLE + mrc p15, 0, r0, c1, c0, 1 @ Enable SMP/nAMP mode + orr r0, r0, #0x20 + mcr p15, 0, r0, c1, c0, 1 +#endif +#endif + mov r0, #0 mcr p15, 0, r0, c7, c14, 0 @ clean+invalidate D cache mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache @@ -198,6 +219,9 @@ __v6_setup: mcr p15, 0, r0, c7, c10, 4 @ drain write buffer mcr p15, 0, r0, c8, c7, 0 @ invalidate I + D TLBs mcr p15, 0, r0, c2, c0, 2 @ TTB control register +#ifdef CONFIG_SMP + orr r4, r4, #2 @ set shared pgtable +#endif mcr p15, 0, r4, c2, c0, 1 @ load TTB1 #ifdef CONFIG_VFP mrc p15, 0, r0, c1, c0, 2 diff --git a/arch/arm/nwfpe/fpa11.h b/arch/arm/nwfpe/fpa11.h index 9677ae8448e8..da4c616b6c49 100644 --- a/arch/arm/nwfpe/fpa11.h +++ b/arch/arm/nwfpe/fpa11.h @@ -60,7 +60,7 @@ typedef union tagFPREG { #ifdef CONFIG_FPE_NWFPE_XP floatx80 fExtended; #else - int padding[3]; + u32 padding[3]; #endif } FPREG; diff --git a/arch/arm/nwfpe/fpa11_cpdt.c b/arch/arm/nwfpe/fpa11_cpdt.c index b0db5cbcc3b1..32859fa8dcfc 100644 --- a/arch/arm/nwfpe/fpa11_cpdt.c +++ b/arch/arm/nwfpe/fpa11_cpdt.c @@ -59,8 +59,13 @@ static inline void loadExtended(const unsigned int Fn, const unsigned int __user p = (unsigned int *) &fpa11->fpreg[Fn].fExtended; fpa11->fType[Fn] = typeExtended; get_user(p[0], &pMem[0]); /* sign & exponent */ +#ifdef __ARMEB__ + get_user(p[1], &pMem[1]); /* ms bits */ + get_user(p[2], &pMem[2]); /* ls bits */ +#else get_user(p[1], &pMem[2]); /* ls bits */ get_user(p[2], &pMem[1]); /* ms bits */ +#endif } #endif @@ -177,8 +182,13 @@ static inline void storeExtended(const unsigned int Fn, unsigned int __user *pMe } put_user(val.i[0], &pMem[0]); /* sign & exp */ +#ifdef __ARMEB__ + put_user(val.i[1], &pMem[1]); /* msw */ + put_user(val.i[2], &pMem[2]); +#else put_user(val.i[1], &pMem[2]); put_user(val.i[2], &pMem[1]); /* msw */ +#endif } #endif diff --git a/arch/arm/nwfpe/fpopcode.c b/arch/arm/nwfpe/fpopcode.c index 4c9f5703148c..67ff2ab08ea0 100644 --- a/arch/arm/nwfpe/fpopcode.c +++ b/arch/arm/nwfpe/fpopcode.c @@ -29,14 +29,14 @@ #ifdef CONFIG_FPE_NWFPE_XP const floatx80 floatx80Constant[] = { - {0x0000, 0x0000000000000000ULL}, /* extended 0.0 */ - {0x3fff, 0x8000000000000000ULL}, /* extended 1.0 */ - {0x4000, 0x8000000000000000ULL}, /* extended 2.0 */ - {0x4000, 0xc000000000000000ULL}, /* extended 3.0 */ - {0x4001, 0x8000000000000000ULL}, /* extended 4.0 */ - {0x4001, 0xa000000000000000ULL}, /* extended 5.0 */ - {0x3ffe, 0x8000000000000000ULL}, /* extended 0.5 */ - {0x4002, 0xa000000000000000ULL} /* extended 10.0 */ + { .high = 0x0000, .low = 0x0000000000000000ULL},/* extended 0.0 */ + { .high = 0x3fff, .low = 0x8000000000000000ULL},/* extended 1.0 */ + { .high = 0x4000, .low = 0x8000000000000000ULL},/* extended 2.0 */ + { .high = 0x4000, .low = 0xc000000000000000ULL},/* extended 3.0 */ + { .high = 0x4001, .low = 0x8000000000000000ULL},/* extended 4.0 */ + { .high = 0x4001, .low = 0xa000000000000000ULL},/* extended 5.0 */ + { .high = 0x3ffe, .low = 0x8000000000000000ULL},/* extended 0.5 */ + { .high = 0x4002, .low = 0xa000000000000000ULL},/* extended 10.0 */ }; #endif diff --git a/arch/arm/nwfpe/softfloat-specialize b/arch/arm/nwfpe/softfloat-specialize index acf409144763..d4a4c8e06635 100644 --- a/arch/arm/nwfpe/softfloat-specialize +++ b/arch/arm/nwfpe/softfloat-specialize @@ -332,6 +332,7 @@ static floatx80 commonNaNToFloatx80( commonNaNT a ) z.low = LIT64( 0xC000000000000000 ) | ( a.high>>1 ); z.high = ( ( (bits16) a.sign )<<15 ) | 0x7FFF; + z.__padding = 0; return z; } diff --git a/arch/arm/nwfpe/softfloat.c b/arch/arm/nwfpe/softfloat.c index f9f049132a17..0f9656e482ba 100644 --- a/arch/arm/nwfpe/softfloat.c +++ b/arch/arm/nwfpe/softfloat.c @@ -531,6 +531,7 @@ INLINE floatx80 packFloatx80( flag zSign, int32 zExp, bits64 zSig ) z.low = zSig; z.high = ( ( (bits16) zSign )<<15 ) + zExp; + z.__padding = 0; return z; } @@ -2831,6 +2832,7 @@ static floatx80 subFloatx80Sigs( struct roundingData *roundData, floatx80 a, flo roundData->exception |= float_flag_invalid; z.low = floatx80_default_nan_low; z.high = floatx80_default_nan_high; + z.__padding = 0; return z; } if ( aExp == 0 ) { @@ -2950,6 +2952,7 @@ floatx80 floatx80_mul( struct roundingData *roundData, floatx80 a, floatx80 b ) roundData->exception |= float_flag_invalid; z.low = floatx80_default_nan_low; z.high = floatx80_default_nan_high; + z.__padding = 0; return z; } return packFloatx80( zSign, 0x7FFF, LIT64( 0x8000000000000000 ) ); @@ -3015,6 +3018,7 @@ floatx80 floatx80_div( struct roundingData *roundData, floatx80 a, floatx80 b ) roundData->exception |= float_flag_invalid; z.low = floatx80_default_nan_low; z.high = floatx80_default_nan_high; + z.__padding = 0; return z; } roundData->exception |= float_flag_divbyzero; @@ -3093,6 +3097,7 @@ floatx80 floatx80_rem( struct roundingData *roundData, floatx80 a, floatx80 b ) roundData->exception |= float_flag_invalid; z.low = floatx80_default_nan_low; z.high = floatx80_default_nan_high; + z.__padding = 0; return z; } normalizeFloatx80Subnormal( bSig, &bExp, &bSig ); @@ -3184,6 +3189,7 @@ floatx80 floatx80_sqrt( struct roundingData *roundData, floatx80 a ) roundData->exception |= float_flag_invalid; z.low = floatx80_default_nan_low; z.high = floatx80_default_nan_high; + z.__padding = 0; return z; } if ( aExp == 0 ) { diff --git a/arch/arm/nwfpe/softfloat.h b/arch/arm/nwfpe/softfloat.h index 14151700b6b2..978c699673c6 100644 --- a/arch/arm/nwfpe/softfloat.h +++ b/arch/arm/nwfpe/softfloat.h @@ -51,11 +51,17 @@ input or output the `floatx80' type will be defined. Software IEC/IEEE floating-point types. ------------------------------------------------------------------------------- */ -typedef unsigned long int float32; -typedef unsigned long long float64; +typedef u32 float32; +typedef u64 float64; typedef struct { - unsigned short high; - unsigned long long low; +#ifdef __ARMEB__ + u16 __padding; + u16 high; +#else + u16 high; + u16 __padding; +#endif + u64 low; } floatx80; /* diff --git a/arch/arm/plat-omap/ocpi.c b/arch/arm/plat-omap/ocpi.c index 1fb16f9edfd5..2ede2ee8cae4 100644 --- a/arch/arm/plat-omap/ocpi.c +++ b/arch/arm/plat-omap/ocpi.c @@ -25,7 +25,6 @@ #include <linux/config.h> #include <linux/module.h> -#include <linux/version.h> #include <linux/types.h> #include <linux/errno.h> #include <linux/kernel.h> diff --git a/arch/arm26/kernel/process.c b/arch/arm26/kernel/process.c index 9eb9964d32a7..15833a0057dd 100644 --- a/arch/arm26/kernel/process.c +++ b/arch/arm26/kernel/process.c @@ -74,15 +74,13 @@ __setup("hlt", hlt_setup); void cpu_idle(void) { /* endless idle loop with no priority at all */ - preempt_disable(); while (1) { - while (!need_resched()) { - local_irq_disable(); - if (!need_resched() && !hlt_counter) - local_irq_enable(); - } + while (!need_resched()) + cpu_relax(); + preempt_enable_no_resched(); + schedule(); + preempt_disable(); } - schedule(); } static char reboot_mode = 'h'; diff --git a/arch/cris/arch-v10/drivers/pcf8563.c b/arch/cris/arch-v10/drivers/pcf8563.c index 201f4c90d961..f2c55742e90c 100644 --- a/arch/cris/arch-v10/drivers/pcf8563.c +++ b/arch/cris/arch-v10/drivers/pcf8563.c @@ -19,7 +19,6 @@ */ #include <linux/config.h> -#include <linux/version.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/types.h> diff --git a/arch/cris/arch-v10/kernel/fasttimer.c b/arch/cris/arch-v10/kernel/fasttimer.c index 094ff45ae85b..cac05a5e514c 100644 --- a/arch/cris/arch-v10/kernel/fasttimer.c +++ b/arch/cris/arch-v10/kernel/fasttimer.c @@ -112,7 +112,6 @@ #include <asm/rtc.h> #include <linux/config.h> -#include <linux/version.h> #include <asm/arch/svinto.h> #include <asm/fasttimer.h> diff --git a/arch/cris/arch-v32/drivers/nandflash.c b/arch/cris/arch-v32/drivers/nandflash.c index fc2a619b035d..93ddea4d9564 100644 --- a/arch/cris/arch-v32/drivers/nandflash.c +++ b/arch/cris/arch-v32/drivers/nandflash.c @@ -14,7 +14,6 @@ * */ -#include <linux/version.h> #include <linux/slab.h> #include <linux/init.h> #include <linux/module.h> diff --git a/arch/cris/arch-v32/drivers/pcf8563.c b/arch/cris/arch-v32/drivers/pcf8563.c index f894580b648b..d788bda3578c 100644 --- a/arch/cris/arch-v32/drivers/pcf8563.c +++ b/arch/cris/arch-v32/drivers/pcf8563.c @@ -18,7 +18,6 @@ */ #include <linux/config.h> -#include <linux/version.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/types.h> diff --git a/arch/cris/arch-v32/kernel/smp.c b/arch/cris/arch-v32/kernel/smp.c index 957f551ba5ce..13867f4fad16 100644 --- a/arch/cris/arch-v32/kernel/smp.c +++ b/arch/cris/arch-v32/kernel/smp.c @@ -161,6 +161,7 @@ void __init smp_callin(void) REG_WR(intr_vect, irq_regs[cpu], rw_mask, vect_mask); unmask_irq(IPI_INTR_VECT); unmask_irq(TIMER_INTR_VECT); + preempt_disable(); local_irq_enable(); cpu_set(cpu, cpu_online_map); diff --git a/arch/cris/kernel/process.c b/arch/cris/kernel/process.c index 949a0e40e03c..7c80afb10460 100644 --- a/arch/cris/kernel/process.c +++ b/arch/cris/kernel/process.c @@ -218,7 +218,9 @@ void cpu_idle (void) idle = default_idle; idle(); } + preempt_enable_no_resched(); schedule(); + preempt_disable(); } } diff --git a/arch/frv/kernel/process.c b/arch/frv/kernel/process.c index 3001b82b1514..54a452136f00 100644 --- a/arch/frv/kernel/process.c +++ b/arch/frv/kernel/process.c @@ -77,16 +77,20 @@ void (*idle)(void) = core_sleep_idle; */ void cpu_idle(void) { + int cpu = smp_processor_id(); + /* endless idle loop with no priority at all */ while (1) { while (!need_resched()) { - irq_stat[smp_processor_id()].idle_timestamp = jiffies; + irq_stat[cpu].idle_timestamp = jiffies; if (!frv_dma_inprogress && idle) idle(); } + preempt_enable_no_resched(); schedule(); + preempt_disable(); } } diff --git a/arch/h8300/kernel/process.c b/arch/h8300/kernel/process.c index 27f1fce64ce4..fe21adf3e75e 100644 --- a/arch/h8300/kernel/process.c +++ b/arch/h8300/kernel/process.c @@ -53,22 +53,18 @@ asmlinkage void ret_from_fork(void); #if !defined(CONFIG_H8300H_SIM) && !defined(CONFIG_H8S_SIM) void default_idle(void) { - while(1) { - if (!need_resched()) { - local_irq_enable(); - __asm__("sleep"); - local_irq_disable(); - } - schedule(); - } + local_irq_disable(); + if (!need_resched()) { + local_irq_enable(); + /* XXX: race here! What if need_resched() gets set now? */ + __asm__("sleep"); + } else + local_irq_enable(); } #else void default_idle(void) { - while(1) { - if (need_resched()) - schedule(); - } + cpu_relax(); } #endif void (*idle)(void) = default_idle; @@ -81,7 +77,13 @@ void (*idle)(void) = default_idle; */ void cpu_idle(void) { - idle(); + while (1) { + while (!need_resched()) + idle(); + preempt_enable_no_resched(); + schedule(); + preempt_disable(); + } } void machine_restart(char * __unused) diff --git a/arch/i386/kernel/apm.c b/arch/i386/kernel/apm.c index 86e80c551478..003548b8735f 100644 --- a/arch/i386/kernel/apm.c +++ b/arch/i386/kernel/apm.c @@ -769,8 +769,26 @@ static int set_system_power_state(u_short state) static int apm_do_idle(void) { u32 eax; + u8 ret = 0; + int idled = 0; + int polling; + + polling = test_thread_flag(TIF_POLLING_NRFLAG); + if (polling) { + clear_thread_flag(TIF_POLLING_NRFLAG); + smp_mb__after_clear_bit(); + } + if (!need_resched()) { + idled = 1; + ret = apm_bios_call_simple(APM_FUNC_IDLE, 0, 0, &eax); + } + if (polling) + set_thread_flag(TIF_POLLING_NRFLAG); + + if (!idled) + return 0; - if (apm_bios_call_simple(APM_FUNC_IDLE, 0, 0, &eax)) { + if (ret) { static unsigned long t; /* This always fails on some SMP boards running UP kernels. diff --git a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c index caa9f7711343..871366b83b3f 100644 --- a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c +++ b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c @@ -377,10 +377,9 @@ acpi_cpufreq_cpu_init ( arg0.buffer.length = 12; arg0.buffer.pointer = (u8 *) arg0_buf; - data = kmalloc(sizeof(struct cpufreq_acpi_io), GFP_KERNEL); + data = kzalloc(sizeof(struct cpufreq_acpi_io), GFP_KERNEL); if (!data) return (-ENOMEM); - memset(data, 0, sizeof(struct cpufreq_acpi_io)); acpi_io_data[cpu] = data; diff --git a/arch/i386/kernel/cpu/cpufreq/powernow-k7.c b/arch/i386/kernel/cpu/cpufreq/powernow-k7.c index 73a5dc5b26b8..edcd626001da 100644 --- a/arch/i386/kernel/cpu/cpufreq/powernow-k7.c +++ b/arch/i386/kernel/cpu/cpufreq/powernow-k7.c @@ -171,10 +171,9 @@ static int get_ranges (unsigned char *pst) unsigned int speed; u8 fid, vid; - powernow_table = kmalloc((sizeof(struct cpufreq_frequency_table) * (number_scales + 1)), GFP_KERNEL); + powernow_table = kzalloc((sizeof(struct cpufreq_frequency_table) * (number_scales + 1)), GFP_KERNEL); if (!powernow_table) return -ENOMEM; - memset(powernow_table, 0, (sizeof(struct cpufreq_frequency_table) * (number_scales + 1))); for (j=0 ; j < number_scales; j++) { fid = *pst++; @@ -305,16 +304,13 @@ static int powernow_acpi_init(void) goto err0; } - acpi_processor_perf = kmalloc(sizeof(struct acpi_processor_performance), + acpi_processor_perf = kzalloc(sizeof(struct acpi_processor_performance), GFP_KERNEL); - if (!acpi_processor_perf) { retval = -ENOMEM; goto err0; } - memset(acpi_processor_perf, 0, sizeof(struct acpi_processor_performance)); - if (acpi_processor_register_performance(acpi_processor_perf, 0)) { retval = -EIO; goto err1; @@ -337,14 +333,12 @@ static int powernow_acpi_init(void) goto err2; } - powernow_table = kmalloc((number_scales + 1) * (sizeof(struct cpufreq_frequency_table)), GFP_KERNEL); + powernow_table = kzalloc((number_scales + 1) * (sizeof(struct cpufreq_frequency_table)), GFP_KERNEL); if (!powernow_table) { retval = -ENOMEM; goto err2; } - memset(powernow_table, 0, ((number_scales + 1) * sizeof(struct cpufreq_frequency_table))); - pc.val = (unsigned long) acpi_processor_perf->states[0].control; for (i = 0; i < number_scales; i++) { u8 fid, vid; diff --git a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c index 2d5c9adba0cd..68a1fc87f4ca 100644 --- a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c +++ b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c @@ -462,7 +462,6 @@ static int check_supported_cpu(unsigned int cpu) oldmask = current->cpus_allowed; set_cpus_allowed(current, cpumask_of_cpu(cpu)); - schedule(); if (smp_processor_id() != cpu) { printk(KERN_ERR "limiting to cpu %u failed\n", cpu); @@ -497,9 +496,7 @@ static int check_supported_cpu(unsigned int cpu) out: set_cpus_allowed(current, oldmask); - schedule(); return rc; - } static int check_pst_table(struct powernow_k8_data *data, struct pst_s *pst, u8 maxvid) @@ -913,7 +910,6 @@ static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsi /* only run on specific CPU from here on */ oldmask = current->cpus_allowed; set_cpus_allowed(current, cpumask_of_cpu(pol->cpu)); - schedule(); if (smp_processor_id() != pol->cpu) { printk(KERN_ERR "limiting to cpu %u failed\n", pol->cpu); @@ -968,8 +964,6 @@ static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsi err_out: set_cpus_allowed(current, oldmask); - schedule(); - return ret; } @@ -991,12 +985,11 @@ static int __init powernowk8_cpu_init(struct cpufreq_policy *pol) if (!check_supported_cpu(pol->cpu)) return -ENODEV; - data = kmalloc(sizeof(struct powernow_k8_data), GFP_KERNEL); + data = kzalloc(sizeof(struct powernow_k8_data), GFP_KERNEL); if (!data) { printk(KERN_ERR PFX "unable to alloc powernow_k8_data"); return -ENOMEM; } - memset(data,0,sizeof(struct powernow_k8_data)); data->cpu = pol->cpu; @@ -1026,7 +1019,6 @@ static int __init powernowk8_cpu_init(struct cpufreq_policy *pol) /* only run on specific CPU from here on */ oldmask = current->cpus_allowed; set_cpus_allowed(current, cpumask_of_cpu(pol->cpu)); - schedule(); if (smp_processor_id() != pol->cpu) { printk(KERN_ERR "limiting to cpu %u failed\n", pol->cpu); @@ -1045,7 +1037,6 @@ static int __init powernowk8_cpu_init(struct cpufreq_policy *pol) /* run on any CPU again */ set_cpus_allowed(current, oldmask); - schedule(); pol->governor = CPUFREQ_DEFAULT_GOVERNOR; pol->cpus = cpu_core_map[pol->cpu]; @@ -1080,7 +1071,6 @@ static int __init powernowk8_cpu_init(struct cpufreq_policy *pol) err_out: set_cpus_allowed(current, oldmask); - schedule(); powernow_k8_cpu_exit_acpi(data); kfree(data); @@ -1116,17 +1106,14 @@ static unsigned int powernowk8_get (unsigned int cpu) set_cpus_allowed(current, oldmask); return 0; } - preempt_disable(); - + if (query_current_values_with_pending_wait(data)) goto out; khz = find_khz_freq_from_fid(data->currfid); - out: - preempt_enable_no_resched(); +out: set_cpus_allowed(current, oldmask); - return khz; } diff --git a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c index 0ea010a7afb1..edb9873e27e3 100644 --- a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c +++ b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c @@ -423,12 +423,11 @@ static int centrino_cpu_init_acpi(struct cpufreq_policy *policy) } } - centrino_model[cpu] = kmalloc(sizeof(struct cpu_model), GFP_KERNEL); + centrino_model[cpu] = kzalloc(sizeof(struct cpu_model), GFP_KERNEL); if (!centrino_model[cpu]) { result = -ENOMEM; goto err_unreg; } - memset(centrino_model[cpu], 0, sizeof(struct cpu_model)); centrino_model[cpu]->model_name=NULL; centrino_model[cpu]->max_freq = p.states[0].core_frequency * 1000; diff --git a/arch/i386/kernel/process.c b/arch/i386/kernel/process.c index 7a14fdfd3af9..1cb261f225d5 100644 --- a/arch/i386/kernel/process.c +++ b/arch/i386/kernel/process.c @@ -99,14 +99,22 @@ EXPORT_SYMBOL(enable_hlt); */ void default_idle(void) { + local_irq_enable(); + if (!hlt_counter && boot_cpu_data.hlt_works_ok) { - local_irq_disable(); - if (!need_resched()) - safe_halt(); - else - local_irq_enable(); + clear_thread_flag(TIF_POLLING_NRFLAG); + smp_mb__after_clear_bit(); + while (!need_resched()) { + local_irq_disable(); + if (!need_resched()) + safe_halt(); + else + local_irq_enable(); + } + set_thread_flag(TIF_POLLING_NRFLAG); } else { - cpu_relax(); + while (!need_resched()) + cpu_relax(); } } #ifdef CONFIG_APM_MODULE @@ -120,29 +128,14 @@ EXPORT_SYMBOL(default_idle); */ static void poll_idle (void) { - int oldval; - local_irq_enable(); - /* - * Deal with another CPU just having chosen a thread to - * run here: - */ - oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED); - - if (!oldval) { - set_thread_flag(TIF_POLLING_NRFLAG); - asm volatile( - "2:" - "testl %0, %1;" - "rep; nop;" - "je 2b;" - : : "i"(_TIF_NEED_RESCHED), "m" (current_thread_info()->flags)); - - clear_thread_flag(TIF_POLLING_NRFLAG); - } else { - set_need_resched(); - } + asm volatile( + "2:" + "testl %0, %1;" + "rep; nop;" + "je 2b;" + : : "i"(_TIF_NEED_RESCHED), "m" (current_thread_info()->flags)); } #ifdef CONFIG_HOTPLUG_CPU @@ -179,7 +172,9 @@ static inline void play_dead(void) */ void cpu_idle(void) { - int cpu = raw_smp_processor_id(); + int cpu = smp_processor_id(); + + set_thread_flag(TIF_POLLING_NRFLAG); /* endless idle loop with no priority at all */ while (1) { @@ -201,7 +196,9 @@ void cpu_idle(void) __get_cpu_var(irq_stat).idle_timestamp = jiffies; idle(); } + preempt_enable_no_resched(); schedule(); + preempt_disable(); } } @@ -244,15 +241,12 @@ static void mwait_idle(void) { local_irq_enable(); - if (!need_resched()) { - set_thread_flag(TIF_POLLING_NRFLAG); - do { - __monitor((void *)¤t_thread_info()->flags, 0, 0); - if (need_resched()) - break; - __mwait(0, 0); - } while (!need_resched()); - clear_thread_flag(TIF_POLLING_NRFLAG); + while (!need_resched()) { + __monitor((void *)¤t_thread_info()->flags, 0, 0); + smp_mb(); + if (need_resched()) + break; + __mwait(0, 0); } } diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c index b48ac635f3c1..fdfcb0cba9b4 100644 --- a/arch/i386/kernel/setup.c +++ b/arch/i386/kernel/setup.c @@ -129,9 +129,7 @@ struct drive_info_struct { char dummy[32]; } drive_info; EXPORT_SYMBOL(drive_info); #endif struct screen_info screen_info; -#ifdef CONFIG_VT EXPORT_SYMBOL(screen_info); -#endif struct apm_info apm_info; EXPORT_SYMBOL(apm_info); struct sys_desc_table_struct { diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c index 47ec76794d02..bc5a9d97466b 100644 --- a/arch/i386/kernel/smpboot.c +++ b/arch/i386/kernel/smpboot.c @@ -485,6 +485,7 @@ static void __devinit start_secondary(void *unused) * things done here to the most necessary things. */ cpu_init(); + preempt_disable(); smp_callin(); while (!cpu_isset(smp_processor_id(), smp_commenced_mask)) rep_nop(); diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 9f2093c1f44b..d4de8a4814be 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -191,6 +191,7 @@ config IOSAPIC config IA64_SGI_SN_XP tristate "Support communication between SGI SSIs" + depends on IA64_GENERIC || IA64_SGI_SN2 select IA64_UNCACHED_ALLOCATOR help An SGI machine can be divided into multiple Single System diff --git a/arch/ia64/ia32/ia32_ioctl.c b/arch/ia64/ia32/ia32_ioctl.c index 164b211f4174..88739394f6df 100644 --- a/arch/ia64/ia32/ia32_ioctl.c +++ b/arch/ia64/ia32/ia32_ioctl.c @@ -29,10 +29,8 @@ #define CODE #include "compat_ioctl.c" -typedef int (* ioctl32_handler_t)(unsigned int, unsigned int, unsigned long, struct file *); - #define COMPATIBLE_IOCTL(cmd) HANDLE_IOCTL((cmd),sys_ioctl) -#define HANDLE_IOCTL(cmd,handler) { (cmd), (ioctl32_handler_t)(handler), NULL }, +#define HANDLE_IOCTL(cmd,handler) { (cmd), (ioctl_trans_handler_t)(handler), NULL }, #define IOCTL_TABLE_START \ struct ioctl_trans ioctl_start[] = { #define IOCTL_TABLE_END \ diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c index f081c60ab206..eb39bc9c133b 100644 --- a/arch/ia64/kernel/mca_drv.c +++ b/arch/ia64/kernel/mca_drv.c @@ -88,7 +88,7 @@ mca_page_isolate(unsigned long paddr) if (!ia64_phys_addr_valid(paddr)) return ISOLATE_NONE; - if (!pfn_valid(paddr)) + if (!pfn_valid(paddr >> PAGE_SHIFT)) return ISOLATE_NONE; /* convert physical address to physical page number */ @@ -108,6 +108,7 @@ mca_page_isolate(unsigned long paddr) return ISOLATE_NG; /* add attribute 'Reserved' and register the page */ + get_page(p); SetPageReserved(p); page_isolate[num_page_isolate++] = p; diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c index 051e050359e4..640d6908f8ec 100644 --- a/arch/ia64/kernel/process.c +++ b/arch/ia64/kernel/process.c @@ -197,11 +197,15 @@ void default_idle (void) { local_irq_enable(); - while (!need_resched()) - if (can_do_pal_halt) - safe_halt(); - else + while (!need_resched()) { + if (can_do_pal_halt) { + local_irq_disable(); + if (!need_resched()) + safe_halt(); + local_irq_enable(); + } else cpu_relax(); + } } #ifdef CONFIG_HOTPLUG_CPU @@ -263,16 +267,16 @@ void __attribute__((noreturn)) cpu_idle (void) { void (*mark_idle)(int) = ia64_mark_idle; + int cpu = smp_processor_id(); + set_thread_flag(TIF_POLLING_NRFLAG); /* endless idle loop with no priority at all */ while (1) { + if (!need_resched()) { + void (*idle)(void); #ifdef CONFIG_SMP - if (!need_resched()) min_xtp(); #endif - while (!need_resched()) { - void (*idle)(void); - if (__get_cpu_var(cpu_idle_state)) __get_cpu_var(cpu_idle_state) = 0; @@ -284,17 +288,17 @@ cpu_idle (void) if (!idle) idle = default_idle; (*idle)(); - } - - if (mark_idle) - (*mark_idle)(0); - + if (mark_idle) + (*mark_idle)(0); #ifdef CONFIG_SMP - normal_xtp(); + normal_xtp(); #endif + } + preempt_enable_no_resched(); schedule(); + preempt_disable(); check_pgt_cache(); - if (cpu_is_offline(smp_processor_id())) + if (cpu_is_offline(cpu)) play_dead(); } } diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c index 400a48987124..8f44e7d2df66 100644 --- a/arch/ia64/kernel/smpboot.c +++ b/arch/ia64/kernel/smpboot.c @@ -399,6 +399,7 @@ start_secondary (void *unused) Dprintk("start_secondary: starting CPU 0x%x\n", hard_smp_processor_id()); efi_map_pal_code(); cpu_init(); + preempt_disable(); smp_callin(); cpu_idle(); diff --git a/arch/ia64/sn/pci/pcibr/pcibr_provider.c b/arch/ia64/sn/pci/pcibr/pcibr_provider.c index 7b03b8084ffc..1f500c81002c 100644 --- a/arch/ia64/sn/pci/pcibr/pcibr_provider.c +++ b/arch/ia64/sn/pci/pcibr/pcibr_provider.c @@ -212,13 +212,13 @@ void pcibr_target_interrupt(struct sn_irq_info *sn_irq_info) pdi_pcibus_info; /* Disable the device's IRQ */ - pcireg_intr_enable_bit_clr(pcibus_info, bit); + pcireg_intr_enable_bit_clr(pcibus_info, (1 << bit)); /* Change the device's IRQ */ pcireg_intr_addr_addr_set(pcibus_info, bit, xtalk_addr); /* Re-enable the device's IRQ */ - pcireg_intr_enable_bit_set(pcibus_info, bit); + pcireg_intr_enable_bit_set(pcibus_info, (1 << bit)); pcibr_force_interrupt(sn_irq_info); } diff --git a/arch/ia64/sn/pci/pcibr/pcibr_reg.c b/arch/ia64/sn/pci/pcibr/pcibr_reg.c index 4f718c3e93d3..5d534091262c 100644 --- a/arch/ia64/sn/pci/pcibr/pcibr_reg.c +++ b/arch/ia64/sn/pci/pcibr/pcibr_reg.c @@ -131,7 +131,7 @@ void pcireg_intr_enable_bit_clr(struct pcibus_info *pcibus_info, uint64_t bits) __sn_clrq_relaxed(&ptr->tio.cp_int_enable, bits); break; case PCIBR_BRIDGETYPE_PIC: - __sn_clrq_relaxed(&ptr->pic.p_int_enable, ~bits); + __sn_clrq_relaxed(&ptr->pic.p_int_enable, bits); break; default: panic diff --git a/arch/m32r/kernel/process.c b/arch/m32r/kernel/process.c index ea13a8f4d8b0..cc4b571e5db7 100644 --- a/arch/m32r/kernel/process.c +++ b/arch/m32r/kernel/process.c @@ -104,7 +104,9 @@ void cpu_idle (void) idle(); } + preempt_enable_no_resched(); schedule(); + preempt_disable(); } } diff --git a/arch/m32r/kernel/smpboot.c b/arch/m32r/kernel/smpboot.c index 640d592ea072..b90c54169fa5 100644 --- a/arch/m32r/kernel/smpboot.c +++ b/arch/m32r/kernel/smpboot.c @@ -426,6 +426,7 @@ void __init smp_cpus_done(unsigned int max_cpus) int __init start_secondary(void *unused) { cpu_init(); + preempt_disable(); smp_callin(); while (!cpu_isset(smp_processor_id(), smp_commenced_mask)) cpu_relax(); diff --git a/arch/m68k/kernel/process.c b/arch/m68k/kernel/process.c index 11b1b90ba6ba..13d109328a42 100644 --- a/arch/m68k/kernel/process.c +++ b/arch/m68k/kernel/process.c @@ -102,7 +102,9 @@ void cpu_idle(void) while (1) { while (!need_resched()) idle(); + preempt_enable_no_resched(); schedule(); + preempt_disable(); } } diff --git a/arch/mips/au1000/common/setup.c b/arch/mips/au1000/common/setup.c index 1ef15d5ef943..4f21f42d096b 100644 --- a/arch/mips/au1000/common/setup.c +++ b/arch/mips/au1000/common/setup.c @@ -111,17 +111,6 @@ void __init plat_setup(void) } #endif -#ifdef CONFIG_FB_E1356 - if ((argptr = strstr(argptr, "video=")) == NULL) { - argptr = prom_getcmdline(); -#ifdef CONFIG_MIPS_PB1000 - strcat(argptr, " video=e1356fb:system:pb1000,mmunalign:1"); -#else - strcat(argptr, " video=e1356fb:system:pb1500"); -#endif - } -#endif - #ifdef CONFIG_FB_XPERT98 if ((argptr = strstr(argptr, "video=")) == NULL) { argptr = prom_getcmdline(); diff --git a/arch/mips/configs/ddb5476_defconfig b/arch/mips/configs/ddb5476_defconfig index b260e51eb517..326f3aa63741 100644 --- a/arch/mips/configs/ddb5476_defconfig +++ b/arch/mips/configs/ddb5476_defconfig @@ -658,7 +658,6 @@ CONFIG_FB=y # CONFIG_FB_SMIVGX is not set # CONFIG_FB_CYBLA is not set # CONFIG_FB_TRIDENT is not set -# CONFIG_FB_E1356 is not set # CONFIG_FB_S1D13XXX is not set # CONFIG_FB_VIRTUAL is not set diff --git a/arch/mips/configs/jmr3927_defconfig b/arch/mips/configs/jmr3927_defconfig index 9a728c2d8fd5..6390a753e80b 100644 --- a/arch/mips/configs/jmr3927_defconfig +++ b/arch/mips/configs/jmr3927_defconfig @@ -628,7 +628,6 @@ CONFIG_FB=y # CONFIG_FB_SMIVGX is not set # CONFIG_FB_CYBLA is not set # CONFIG_FB_TRIDENT is not set -# CONFIG_FB_E1356 is not set # CONFIG_FB_S1D13XXX is not set # CONFIG_FB_VIRTUAL is not set diff --git a/arch/mips/configs/ocelot_3_defconfig b/arch/mips/configs/ocelot_3_defconfig index ffb23fcab862..f18d05c2ca77 100644 --- a/arch/mips/configs/ocelot_3_defconfig +++ b/arch/mips/configs/ocelot_3_defconfig @@ -758,7 +758,6 @@ CONFIG_FB_MODE_HELPERS=y # CONFIG_FB_SMIVGX is not set # CONFIG_FB_CYBLA is not set # CONFIG_FB_TRIDENT is not set -# CONFIG_FB_E1356 is not set # CONFIG_FB_S1D13XXX is not set # CONFIG_FB_VIRTUAL is not set diff --git a/arch/mips/configs/pnx8550-v2pci_defconfig b/arch/mips/configs/pnx8550-v2pci_defconfig index 05e65206a7b4..37bd8d5c865d 100644 --- a/arch/mips/configs/pnx8550-v2pci_defconfig +++ b/arch/mips/configs/pnx8550-v2pci_defconfig @@ -897,7 +897,6 @@ CONFIG_FB=y # CONFIG_FB_SMIVGX is not set # CONFIG_FB_CYBLA is not set # CONFIG_FB_TRIDENT is not set -# CONFIG_FB_E1356 is not set # CONFIG_FB_S1D13XXX is not set # CONFIG_FB_VIRTUAL is not set diff --git a/arch/mips/configs/rbhma4500_defconfig b/arch/mips/configs/rbhma4500_defconfig index 2bc61ca4ba08..897420d39053 100644 --- a/arch/mips/configs/rbhma4500_defconfig +++ b/arch/mips/configs/rbhma4500_defconfig @@ -876,7 +876,6 @@ CONFIG_FB_ATY_CT=y # CONFIG_FB_SMIVGX is not set # CONFIG_FB_CYBLA is not set # CONFIG_FB_TRIDENT is not set -# CONFIG_FB_E1356 is not set # CONFIG_FB_S1D13XXX is not set # CONFIG_FB_VIRTUAL is not set diff --git a/arch/mips/kernel/ioctl32.c b/arch/mips/kernel/ioctl32.c index ed9b2da510be..9ea1fc748864 100644 --- a/arch/mips/kernel/ioctl32.c +++ b/arch/mips/kernel/ioctl32.c @@ -26,10 +26,8 @@ long sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg); #define CODE #include "compat_ioctl.c" -typedef int (* ioctl32_handler_t)(unsigned int, unsigned int, unsigned long, struct file *); - #define COMPATIBLE_IOCTL(cmd) HANDLE_IOCTL((cmd),sys_ioctl) -#define HANDLE_IOCTL(cmd,handler) { (cmd), (ioctl32_handler_t)(handler), NULL }, +#define HANDLE_IOCTL(cmd,handler) { (cmd), (ioctl_trans_handler_t)(handler), NULL }, #define IOCTL_TABLE_START \ struct ioctl_trans ioctl_start[] = { #define IOCTL_TABLE_END \ diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index 4fe3d5715c41..dd725779d91f 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -52,7 +52,9 @@ ATTRIB_NORET void cpu_idle(void) while (!need_resched()) if (cpu_wait) (*cpu_wait)(); + preempt_enable_no_resched(); schedule(); + preempt_disable(); } } diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c index fcacf1aae98a..25472fcaf715 100644 --- a/arch/mips/kernel/smp.c +++ b/arch/mips/kernel/smp.c @@ -82,7 +82,7 @@ extern ATTRIB_NORET void cpu_idle(void); */ asmlinkage void start_secondary(void) { - unsigned int cpu = smp_processor_id(); + unsigned int cpu; cpu_probe(); cpu_report(); @@ -95,6 +95,8 @@ asmlinkage void start_secondary(void) */ calibrate_delay(); + preempt_disable(); + cpu = smp_processor_id(); cpu_data[cpu].udelay_val = loops_per_jiffy; prom_smp_finish(); diff --git a/arch/mips/tx4938/toshiba_rbtx4938/irq.c b/arch/mips/tx4938/toshiba_rbtx4938/irq.c index 230f5a93c2e6..9cd9c0fe2265 100644 --- a/arch/mips/tx4938/toshiba_rbtx4938/irq.c +++ b/arch/mips/tx4938/toshiba_rbtx4938/irq.c @@ -84,7 +84,6 @@ IRQ Device #include <asm/ptrace.h> #include <asm/reboot.h> #include <asm/time.h> -#include <linux/version.h> #include <linux/bootmem.h> #include <asm/tx4938/rbtx4938.h> diff --git a/arch/parisc/kernel/asm-offsets.c b/arch/parisc/kernel/asm-offsets.c index 1ad44f92d6e4..e23c4e1e3a25 100644 --- a/arch/parisc/kernel/asm-offsets.c +++ b/arch/parisc/kernel/asm-offsets.c @@ -30,7 +30,6 @@ #include <linux/types.h> #include <linux/sched.h> #include <linux/thread_info.h> -#include <linux/version.h> #include <linux/ptrace.h> #include <linux/hardirq.h> diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c index 7fdca87ef647..fee4f1f09adc 100644 --- a/arch/parisc/kernel/process.c +++ b/arch/parisc/kernel/process.c @@ -88,11 +88,15 @@ void default_idle(void) */ void cpu_idle(void) { + set_thread_flag(TIF_POLLING_NRFLAG); + /* endless idle loop with no priority at all */ while (1) { while (!need_resched()) barrier(); + preempt_enable_no_resched(); schedule(); + preempt_disable(); check_pgt_cache(); } } diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c index 5db3be4e2704..a9ecf6465784 100644 --- a/arch/parisc/kernel/smp.c +++ b/arch/parisc/kernel/smp.c @@ -463,6 +463,7 @@ void __init smp_callin(void) #endif smp_cpu_init(slave_id); + preempt_disable(); #if 0 /* NOT WORKING YET - see entry.S */ istack = (void *)__get_free_pages(GFP_KERNEL,ISTACK_ORDER); diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index cbdc14261655..92cfabf929bc 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -4,6 +4,7 @@ ifeq ($(CONFIG_PPC64),y) EXTRA_CFLAGS += -mno-minimal-toc +CFLAGS_ioctl32.o += -Ifs/ endif ifeq ($(CONFIG_PPC32),y) CFLAGS_prom_init.o += -fPIC @@ -13,7 +14,9 @@ endif obj-y := semaphore.o cputable.o ptrace.o syscalls.o \ irq.o signal_32.o pmc.o obj-$(CONFIG_PPC64) += setup_64.o binfmt_elf32.o sys_ppc32.o \ - signal_64.o ptrace32.o systbl.o + signal_64.o ptrace32.o systbl.o \ + paca.o ioctl32.o cpu_setup_power4.o \ + firmware.o obj-$(CONFIG_ALTIVEC) += vecemu.o vector.o obj-$(CONFIG_POWER4) += idle_power4.o obj-$(CONFIG_PPC_OF) += of_device.o diff --git a/arch/ppc64/kernel/cpu_setup_power4.S b/arch/powerpc/kernel/cpu_setup_power4.S index 1fb673c511ff..cca942fe6115 100644 --- a/arch/ppc64/kernel/cpu_setup_power4.S +++ b/arch/powerpc/kernel/cpu_setup_power4.S @@ -114,11 +114,11 @@ _GLOBAL(__setup_cpu_ppc970) .data .balign L1_CACHE_BYTES,0 -cpu_state_storage: +cpu_state_storage: .space CS_SIZE .balign L1_CACHE_BYTES,0 .text - + /* Called in normal context to backup CPU 0 state. This * does not include cache settings. This function is also * called for machine sleep. This does not include the MMU @@ -151,7 +151,7 @@ _GLOBAL(__save_cpu_setup) std r3,CS_HID4(r5) mfspr r3,SPRN_HID5 std r3,CS_HID5(r5) - + 2: mtcr r7 blr @@ -213,7 +213,7 @@ _GLOBAL(__restore_cpu_setup) mtspr SPRN_HID1,r3 sync isync - + /* Restore HID4 */ ld r3,CS_HID4(r5) sync diff --git a/arch/ppc64/kernel/firmware.c b/arch/powerpc/kernel/firmware.c index d8432c0fb27d..65eae752a527 100644 --- a/arch/ppc64/kernel/firmware.c +++ b/arch/powerpc/kernel/firmware.c @@ -1,6 +1,4 @@ /* - * arch/ppc64/kernel/firmware.c - * * Extracted from cputable.c * * Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org) diff --git a/arch/ppc64/kernel/ioctl32.c b/arch/powerpc/kernel/ioctl32.c index ba4a899045c2..3fa6a93adbd0 100644 --- a/arch/ppc64/kernel/ioctl32.c +++ b/arch/powerpc/kernel/ioctl32.c @@ -1,6 +1,6 @@ -/* +/* * ioctl32.c: Conversion between 32bit and 64bit native ioctls. - * + * * Based on sparc64 ioctl32.c by: * * Copyright (C) 1997-2000 Jakub Jelinek (jakub@redhat.com) diff --git a/arch/ppc64/kernel/pacaData.c b/arch/powerpc/kernel/paca.c index 3133c72b28ec..179948eb0580 100644 --- a/arch/ppc64/kernel/pacaData.c +++ b/arch/powerpc/kernel/paca.c @@ -32,7 +32,7 @@ EXPORT_SYMBOL(systemcfg); * field correctly */ extern unsigned long __toc_start; -/* The Paca is an array with one entry per processor. Each contains an +/* The Paca is an array with one entry per processor. Each contains an * lppaca, which contains the information shared between the * hypervisor and Linux. Each also contains an ItLpRegSave area which * is used by the hypervisor to save registers. diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c index 47d6f7e2ea9f..5d9fd0369aad 100644 --- a/arch/powerpc/kernel/ppc_ksyms.c +++ b/arch/powerpc/kernel/ppc_ksyms.c @@ -44,6 +44,7 @@ #include <asm/cputable.h> #include <asm/btext.h> #include <asm/div64.h> +#include <asm/signal.h> #ifdef CONFIG_8xx #include <asm/commproc.h> @@ -56,7 +57,6 @@ extern void machine_check_exception(struct pt_regs *regs); extern void alignment_exception(struct pt_regs *regs); extern void program_check_exception(struct pt_regs *regs); extern void single_step_exception(struct pt_regs *regs); -extern int do_signal(sigset_t *, struct pt_regs *); extern int pmac_newworld; extern int sys_sigreturn(struct pt_regs *regs); diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index f645adb57534..5af39f866735 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -1264,7 +1264,14 @@ static int __init early_init_dt_scan_memory(unsigned long node, unsigned long l; /* We are scanning "memory" nodes only */ - if (type == NULL || strcmp(type, "memory") != 0) + if (type == NULL) { + /* + * The longtrail doesn't have a device_type on the + * /memory node, so look for the node called /memory@0. + */ + if (depth != 1 || strcmp(uname, "memory@0") != 0) + return 0; + } else if (strcmp(type, "memory") != 0) return 0; reg = (cell_t *)of_get_flat_dt_prop(node, "reg", &l); diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 58f0917bd6b6..09db1bb9ec91 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -94,11 +94,17 @@ extern const struct linux_logo logo_linux_clut224; #ifdef CONFIG_PPC64 #define RELOC(x) (*PTRRELOC(&(x))) #define ADDR(x) (u32) add_reloc_offset((unsigned long)(x)) +#define OF_WORKAROUNDS 0 #else #define RELOC(x) (x) #define ADDR(x) (u32) (x) +#define OF_WORKAROUNDS of_workarounds +int of_workarounds; #endif +#define OF_WA_CLAIM 1 /* do phys/virt claim separately, then map */ +#define OF_WA_LONGTRAIL 2 /* work around longtrail bugs */ + #define PROM_BUG() do { \ prom_printf("kernel BUG at %s line 0x%x!\n", \ RELOC(__FILE__), __LINE__); \ @@ -128,10 +134,11 @@ struct prom_args { struct prom_t { ihandle root; - ihandle chosen; + phandle chosen; int cpu; ihandle stdout; ihandle mmumap; + ihandle memory; }; struct mem_map_entry { @@ -360,16 +367,36 @@ static void __init prom_printf(const char *format, ...) static unsigned int __init prom_claim(unsigned long virt, unsigned long size, unsigned long align) { - int ret; struct prom_t *_prom = &RELOC(prom); - ret = call_prom("claim", 3, 1, (prom_arg_t)virt, (prom_arg_t)size, - (prom_arg_t)align); - if (ret != -1 && _prom->mmumap != 0) - /* old pmacs need us to map as well */ + if (align == 0 && (OF_WORKAROUNDS & OF_WA_CLAIM)) { + /* + * Old OF requires we claim physical and virtual separately + * and then map explicitly (assuming virtual mode) + */ + int ret; + prom_arg_t result; + + ret = call_prom_ret("call-method", 5, 2, &result, + ADDR("claim"), _prom->memory, + align, size, virt); + if (ret != 0 || result == -1) + return -1; + ret = call_prom_ret("call-method", 5, 2, &result, + ADDR("claim"), _prom->mmumap, + align, size, virt); + if (ret != 0) { + call_prom("call-method", 4, 1, ADDR("release"), + _prom->memory, size, virt); + return -1; + } + /* the 0x12 is M (coherence) + PP == read/write */ call_prom("call-method", 6, 1, - ADDR("map"), _prom->mmumap, 0, size, virt, virt); - return ret; + ADDR("map"), _prom->mmumap, 0x12, size, virt, virt); + return virt; + } + return call_prom("claim", 3, 1, (prom_arg_t)virt, (prom_arg_t)size, + (prom_arg_t)align); } static void __init __attribute__((noreturn)) prom_panic(const char *reason) @@ -415,11 +442,52 @@ static int inline prom_getproplen(phandle node, const char *pname) return call_prom("getproplen", 2, 1, node, ADDR(pname)); } -static int inline prom_setprop(phandle node, const char *pname, - void *value, size_t valuelen) +static void add_string(char **str, const char *q) { - return call_prom("setprop", 4, 1, node, ADDR(pname), - (u32)(unsigned long) value, (u32) valuelen); + char *p = *str; + + while (*q) + *p++ = *q++; + *p++ = ' '; + *str = p; +} + +static char *tohex(unsigned int x) +{ + static char digits[] = "0123456789abcdef"; + static char result[9]; + int i; + + result[8] = 0; + i = 8; + do { + --i; + result[i] = digits[x & 0xf]; + x >>= 4; + } while (x != 0 && i > 0); + return &result[i]; +} + +static int __init prom_setprop(phandle node, const char *nodename, + const char *pname, void *value, size_t valuelen) +{ + char cmd[256], *p; + + if (!(OF_WORKAROUNDS & OF_WA_LONGTRAIL)) + return call_prom("setprop", 4, 1, node, ADDR(pname), + (u32)(unsigned long) value, (u32) valuelen); + + /* gah... setprop doesn't work on longtrail, have to use interpret */ + p = cmd; + add_string(&p, "dev"); + add_string(&p, nodename); + add_string(&p, tohex((u32)(unsigned long) value)); + add_string(&p, tohex(valuelen)); + add_string(&p, tohex(ADDR(pname))); + add_string(&p, tohex(strlen(RELOC(pname)))); + add_string(&p, "property"); + *p = 0; + return call_prom("interpret", 1, 1, (u32)(unsigned long) cmd); } /* We can't use the standard versions because of RELOC headaches. */ @@ -980,7 +1048,7 @@ static void __init prom_instantiate_rtas(void) rtas_inst = call_prom("open", 1, 1, ADDR("/rtas")); if (!IHANDLE_VALID(rtas_inst)) { - prom_printf("opening rtas package failed"); + prom_printf("opening rtas package failed (%x)\n", rtas_inst); return; } @@ -988,7 +1056,7 @@ static void __init prom_instantiate_rtas(void) if (call_prom_ret("call-method", 3, 2, &entry, ADDR("instantiate-rtas"), - rtas_inst, base) == PROM_ERROR + rtas_inst, base) != 0 || entry == 0) { prom_printf(" failed\n"); return; @@ -997,8 +1065,10 @@ static void __init prom_instantiate_rtas(void) reserve_mem(base, size); - prom_setprop(rtas_node, "linux,rtas-base", &base, sizeof(base)); - prom_setprop(rtas_node, "linux,rtas-entry", &entry, sizeof(entry)); + prom_setprop(rtas_node, "/rtas", "linux,rtas-base", + &base, sizeof(base)); + prom_setprop(rtas_node, "/rtas", "linux,rtas-entry", + &entry, sizeof(entry)); prom_debug("rtas base = 0x%x\n", base); prom_debug("rtas entry = 0x%x\n", entry); @@ -1089,10 +1159,6 @@ static void __init prom_initialize_tce_table(void) if (base < local_alloc_bottom) local_alloc_bottom = base; - /* Save away the TCE table attributes for later use. */ - prom_setprop(node, "linux,tce-base", &base, sizeof(base)); - prom_setprop(node, "linux,tce-size", &minsize, sizeof(minsize)); - /* It seems OF doesn't null-terminate the path :-( */ memset(path, 0, sizeof(path)); /* Call OF to setup the TCE hardware */ @@ -1101,6 +1167,10 @@ static void __init prom_initialize_tce_table(void) prom_printf("package-to-path failed\n"); } + /* Save away the TCE table attributes for later use. */ + prom_setprop(node, path, "linux,tce-base", &base, sizeof(base)); + prom_setprop(node, path, "linux,tce-size", &minsize, sizeof(minsize)); + prom_debug("TCE table: %s\n", path); prom_debug("\tnode = 0x%x\n", node); prom_debug("\tbase = 0x%x\n", base); @@ -1342,6 +1412,7 @@ static void __init prom_init_client_services(unsigned long pp) /* * For really old powermacs, we need to map things we claim. * For that, we need the ihandle of the mmu. + * Also, on the longtrail, we need to work around other bugs. */ static void __init prom_find_mmu(void) { @@ -1355,12 +1426,19 @@ static void __init prom_find_mmu(void) if (prom_getprop(oprom, "model", version, sizeof(version)) <= 0) return; version[sizeof(version) - 1] = 0; - prom_printf("OF version is '%s'\n", version); /* XXX might need to add other versions here */ - if (strcmp(version, "Open Firmware, 1.0.5") != 0) + if (strcmp(version, "Open Firmware, 1.0.5") == 0) + of_workarounds = OF_WA_CLAIM; + else if (strncmp(version, "FirmWorks,3.", 12) == 0) { + of_workarounds = OF_WA_CLAIM | OF_WA_LONGTRAIL; + call_prom("interpret", 1, 1, "dev /memory 0 to allow-reclaim"); + } else return; + _prom->memory = call_prom("open", 1, 1, ADDR("/memory")); prom_getprop(_prom->chosen, "mmu", &_prom->mmumap, sizeof(_prom->mmumap)); + if (!IHANDLE_VALID(_prom->memory) || !IHANDLE_VALID(_prom->mmumap)) + of_workarounds &= ~OF_WA_CLAIM; /* hmmm */ } #else #define prom_find_mmu() @@ -1382,16 +1460,17 @@ static void __init prom_init_stdout(void) memset(path, 0, 256); call_prom("instance-to-path", 3, 1, _prom->stdout, path, 255); val = call_prom("instance-to-package", 1, 1, _prom->stdout); - prom_setprop(_prom->chosen, "linux,stdout-package", &val, sizeof(val)); + prom_setprop(_prom->chosen, "/chosen", "linux,stdout-package", + &val, sizeof(val)); prom_printf("OF stdout device is: %s\n", RELOC(of_stdout_device)); - prom_setprop(_prom->chosen, "linux,stdout-path", - RELOC(of_stdout_device), strlen(RELOC(of_stdout_device))+1); + prom_setprop(_prom->chosen, "/chosen", "linux,stdout-path", + path, strlen(path) + 1); /* If it's a display, note it */ memset(type, 0, sizeof(type)); prom_getprop(val, "device_type", type, sizeof(type)); if (strcmp(type, RELOC("display")) == 0) - prom_setprop(val, "linux,boot-display", NULL, 0); + prom_setprop(val, path, "linux,boot-display", NULL, 0); } static void __init prom_close_stdin(void) @@ -1514,7 +1593,7 @@ static void __init prom_check_displays(void) /* Success */ prom_printf("done\n"); - prom_setprop(node, "linux,opened", NULL, 0); + prom_setprop(node, path, "linux,opened", NULL, 0); /* Setup a usable color table when the appropriate * method is available. Should update this to set-colors */ @@ -1884,9 +1963,11 @@ static void __init fixup_device_tree(void) /* interrupt on this revision of u3 is number 0 and level */ interrupts[0] = 0; interrupts[1] = 1; - prom_setprop(i2c, "interrupts", &interrupts, sizeof(interrupts)); + prom_setprop(i2c, "/u3@0,f8000000/i2c@f8001000", "interrupts", + &interrupts, sizeof(interrupts)); parent = (u32)mpic; - prom_setprop(i2c, "interrupt-parent", &parent, sizeof(parent)); + prom_setprop(i2c, "/u3@0,f8000000/i2c@f8001000", "interrupt-parent", + &parent, sizeof(parent)); #endif } @@ -1922,11 +2003,11 @@ static void __init prom_check_initrd(unsigned long r3, unsigned long r4) RELOC(prom_initrd_end) = RELOC(prom_initrd_start) + r4; val = RELOC(prom_initrd_start); - prom_setprop(_prom->chosen, "linux,initrd-start", &val, - sizeof(val)); + prom_setprop(_prom->chosen, "/chosen", "linux,initrd-start", + &val, sizeof(val)); val = RELOC(prom_initrd_end); - prom_setprop(_prom->chosen, "linux,initrd-end", &val, - sizeof(val)); + prom_setprop(_prom->chosen, "/chosen", "linux,initrd-end", + &val, sizeof(val)); reserve_mem(RELOC(prom_initrd_start), RELOC(prom_initrd_end) - RELOC(prom_initrd_start)); @@ -1969,14 +2050,15 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, prom_init_client_services(pp); /* - * Init prom stdout device + * See if this OF is old enough that we need to do explicit maps + * and other workarounds */ - prom_init_stdout(); + prom_find_mmu(); /* - * See if this OF is old enough that we need to do explicit maps + * Init prom stdout device */ - prom_find_mmu(); + prom_init_stdout(); /* * Check for an initrd @@ -1989,7 +2071,7 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, */ RELOC(of_platform) = prom_find_machine_type(); getprop_rval = RELOC(of_platform); - prom_setprop(_prom->chosen, "linux,platform", + prom_setprop(_prom->chosen, "/chosen", "linux,platform", &getprop_rval, sizeof(getprop_rval)); #ifdef CONFIG_PPC_PSERIES @@ -2050,21 +2132,23 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, * Fill in some infos for use by the kernel later on */ if (RELOC(prom_memory_limit)) - prom_setprop(_prom->chosen, "linux,memory-limit", + prom_setprop(_prom->chosen, "/chosen", "linux,memory-limit", &RELOC(prom_memory_limit), sizeof(prom_memory_limit)); #ifdef CONFIG_PPC64 if (RELOC(ppc64_iommu_off)) - prom_setprop(_prom->chosen, "linux,iommu-off", NULL, 0); + prom_setprop(_prom->chosen, "/chosen", "linux,iommu-off", + NULL, 0); if (RELOC(iommu_force_on)) - prom_setprop(_prom->chosen, "linux,iommu-force-on", NULL, 0); + prom_setprop(_prom->chosen, "/chosen", "linux,iommu-force-on", + NULL, 0); if (RELOC(prom_tce_alloc_start)) { - prom_setprop(_prom->chosen, "linux,tce-alloc-start", + prom_setprop(_prom->chosen, "/chosen", "linux,tce-alloc-start", &RELOC(prom_tce_alloc_start), sizeof(prom_tce_alloc_start)); - prom_setprop(_prom->chosen, "linux,tce-alloc-end", + prom_setprop(_prom->chosen, "/chosen", "linux,tce-alloc-end", &RELOC(prom_tce_alloc_end), sizeof(prom_tce_alloc_end)); } diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c index 081d931eae48..a7c4515f320f 100644 --- a/arch/powerpc/kernel/signal_32.c +++ b/arch/powerpc/kernel/signal_32.c @@ -42,6 +42,7 @@ #include <asm/uaccess.h> #include <asm/cacheflush.h> +#include <asm/sigcontext.h> #ifdef CONFIG_PPC64 #include "ppc32.h" #include <asm/unistd.h> diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index 32f215825e8d..0578f8387603 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -887,10 +887,6 @@ void altivec_unavailable_exception(struct pt_regs *regs) die("Unrecoverable VMX/Altivec Unavailable Exception", regs, SIGABRT); } -#ifdef CONFIG_PPC64 -extern perf_irq_t perf_irq; -#endif - #if defined(CONFIG_PPC64) || defined(CONFIG_E500) void performance_monitor_exception(struct pt_regs *regs) { diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c index 97082a4203ad..71a6addf9f7f 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/kernel/vio.c @@ -21,6 +21,7 @@ #include <asm/iommu.h> #include <asm/dma.h> #include <asm/vio.h> +#include <asm/prom.h> static const struct vio_device_id *vio_match_device( const struct vio_device_id *, const struct vio_dev *); @@ -265,7 +266,33 @@ static int vio_bus_match(struct device *dev, struct device_driver *drv) return (ids != NULL) && (vio_match_device(ids, vio_dev) != NULL); } +static int vio_hotplug(struct device *dev, char **envp, int num_envp, + char *buffer, int buffer_size) +{ + const struct vio_dev *vio_dev = to_vio_dev(dev); + char *cp; + int length; + + if (!num_envp) + return -ENOMEM; + + if (!vio_dev->dev.platform_data) + return -ENODEV; + cp = (char *)get_property(vio_dev->dev.platform_data, "compatible", &length); + if (!cp) + return -ENODEV; + + envp[0] = buffer; + length = scnprintf(buffer, buffer_size, "MODALIAS=vio:T%sS%s", + vio_dev->type, cp); + if (buffer_size - length <= 0) + return -ENOMEM; + envp[1] = NULL; + return 0; +} + struct bus_type vio_bus_type = { .name = "vio", + .hotplug = vio_hotplug, .match = vio_bus_match, }; diff --git a/arch/powerpc/lib/bitops.c b/arch/powerpc/lib/bitops.c index b67ce3004ebf..f68ad71a0187 100644 --- a/arch/powerpc/lib/bitops.c +++ b/arch/powerpc/lib/bitops.c @@ -41,7 +41,7 @@ unsigned long find_next_bit(const unsigned long *addr, unsigned long size, tmp = *p; found_first: - tmp &= (~0UL >> (64 - size)); + tmp &= (~0UL >> (BITS_PER_LONG - size)); if (tmp == 0UL) /* Are any bits set? */ return result + size; /* Nope. */ found_middle: diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index 900842451bd3..c7f7bb6f30b3 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -122,8 +122,11 @@ static int map_io_page(unsigned long ea, unsigned long pa, int flags) * */ if (htab_bolt_mapping(ea, ea + PAGE_SIZE, pa, flags, - mmu_virtual_psize)) - panic("Can't map bolted IO mapping"); + mmu_virtual_psize)) { + printk(KERN_ERR "Failed to do bolted mapping IO " + "memory at %016lx !\n", pa); + return -ENOMEM; + } } return 0; } diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c index ecd32d5d85f4..4099ddab9205 100644 --- a/arch/powerpc/platforms/chrp/setup.c +++ b/arch/powerpc/platforms/chrp/setup.c @@ -361,7 +361,9 @@ static void __init chrp_find_openpic(void) printk(KERN_INFO "OpenPIC at %lx\n", opaddr); irq_count = NR_IRQS - NUM_ISA_INTERRUPTS - 4; /* leave room for IPIs */ - prom_get_irq_senses(init_senses, NUM_8259_INTERRUPTS, NR_IRQS - 4); + prom_get_irq_senses(init_senses, NUM_ISA_INTERRUPTS, NR_IRQS - 4); + /* i8259 cascade is always positive level */ + init_senses[0] = IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE; iranges = (unsigned int *) get_property(np, "interrupt-ranges", &len); if (iranges == NULL) diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c index d3e4bf756c83..7f8f0cda6a74 100644 --- a/arch/powerpc/platforms/iseries/setup.c +++ b/arch/powerpc/platforms/iseries/setup.c @@ -694,20 +694,19 @@ static void iseries_shared_idle(void) if (hvlpevent_is_pending()) process_iSeries_events(); + preempt_enable_no_resched(); schedule(); + preempt_disable(); } } static void iseries_dedicated_idle(void) { long oldval; + set_thread_flag(TIF_POLLING_NRFLAG); while (1) { - oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED); - - if (!oldval) { - set_thread_flag(TIF_POLLING_NRFLAG); - + if (!need_resched()) { while (!need_resched()) { ppc64_runlatch_off(); HMT_low(); @@ -720,13 +719,12 @@ static void iseries_dedicated_idle(void) } HMT_medium(); - clear_thread_flag(TIF_POLLING_NRFLAG); - } else { - set_need_resched(); } ppc64_runlatch_on(); + preempt_enable_no_resched(); schedule(); + preempt_disable(); } } diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile index b9938fece781..27515476ad6c 100644 --- a/arch/powerpc/platforms/pseries/Makefile +++ b/arch/powerpc/platforms/pseries/Makefile @@ -3,3 +3,4 @@ obj-y := pci.o lpar.o hvCall.o nvram.o reconfig.o \ obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_IBMVIO) += vio.o obj-$(CONFIG_XICS) += xics.o +obj-$(CONFIG_EEH) += eeh.o eeh_event.o diff --git a/arch/ppc64/kernel/eeh.c b/arch/powerpc/platforms/pseries/eeh.c index 035d1b14a207..b760836bb9d1 100644 --- a/arch/ppc64/kernel/eeh.c +++ b/arch/powerpc/platforms/pseries/eeh.c @@ -1,39 +1,38 @@ /* * eeh.c * Copyright (C) 2001 Dave Engebretsen & Todd Inglett 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. - * + * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * + * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ -#include <linux/bootmem.h> +#include <linux/delay.h> #include <linux/init.h> #include <linux/list.h> -#include <linux/mm.h> -#include <linux/notifier.h> #include <linux/pci.h> #include <linux/proc_fs.h> #include <linux/rbtree.h> #include <linux/seq_file.h> #include <linux/spinlock.h> +#include <asm/atomic.h> #include <asm/eeh.h> +#include <asm/eeh_event.h> #include <asm/io.h> #include <asm/machdep.h> +#include <asm/ppc-pci.h> #include <asm/rtas.h> -#include <asm/atomic.h> #include <asm/systemcfg.h> -#include <asm/ppc-pci.h> #undef DEBUG @@ -49,8 +48,8 @@ * were "empty": all reads return 0xff's and all writes are silently * ignored. EEH slot isolation events can be triggered by parity * errors on the address or data busses (e.g. during posted writes), - * which in turn might be caused by dust, vibration, humidity, - * radioactivity or plain-old failed hardware. + * which in turn might be caused by low voltage on the bus, dust, + * vibration, humidity, radioactivity or plain-old failed hardware. * * Note, however, that one of the leading causes of EEH slot * freeze events are buggy device drivers, buggy device microcode, @@ -71,26 +70,15 @@ * and sent out for processing. */ -/** Bus Unit ID macros; get low and hi 32-bits of the 64-bit BUID */ -#define BUID_HI(buid) ((buid) >> 32) -#define BUID_LO(buid) ((buid) & 0xffffffff) - -/* EEH event workqueue setup. */ -static DEFINE_SPINLOCK(eeh_eventlist_lock); -LIST_HEAD(eeh_eventlist); -static void eeh_event_handler(void *); -DECLARE_WORK(eeh_event_wq, eeh_event_handler, NULL); - -static struct notifier_block *eeh_notifier_chain; - -/* - * If a device driver keeps reading an MMIO register in an interrupt +/* If a device driver keeps reading an MMIO register in an interrupt * handler after a slot isolation event has occurred, we assume it * is broken and panic. This sets the threshold for how many read * attempts we allow before panicking. */ -#define EEH_MAX_FAILS 1000 -static atomic_t eeh_fail_count; +#define EEH_MAX_FAILS 100000 + +/* Misc forward declaraions */ +static void eeh_save_bars(struct pci_dev * pdev, struct pci_dn *pdn); /* RTAS tokens */ static int ibm_set_eeh_option; @@ -101,12 +89,19 @@ static int ibm_slot_error_detail; static int eeh_subsystem_enabled; +/* Lock to avoid races due to multiple reports of an error */ +static DEFINE_SPINLOCK(confirm_error_lock); + /* Buffer for reporting slot-error-detail rtas calls */ static unsigned char slot_errbuf[RTAS_ERROR_LOG_MAX]; static DEFINE_SPINLOCK(slot_errbuf_lock); static int eeh_error_buf_size; /* System monitoring statistics */ +static DEFINE_PER_CPU(unsigned long, no_device); +static DEFINE_PER_CPU(unsigned long, no_dn); +static DEFINE_PER_CPU(unsigned long, no_cfg_addr); +static DEFINE_PER_CPU(unsigned long, ignored_check); static DEFINE_PER_CPU(unsigned long, total_mmio_ffs); static DEFINE_PER_CPU(unsigned long, false_positives); static DEFINE_PER_CPU(unsigned long, ignored_failures); @@ -224,9 +219,9 @@ pci_addr_cache_insert(struct pci_dev *dev, unsigned long alo, while (*p) { parent = *p; piar = rb_entry(parent, struct pci_io_addr_range, rb_node); - if (alo < piar->addr_lo) { + if (ahi < piar->addr_lo) { p = &parent->rb_left; - } else if (ahi > piar->addr_hi) { + } else if (alo > piar->addr_hi) { p = &parent->rb_right; } else { if (dev != piar->pcidev || @@ -245,6 +240,11 @@ pci_addr_cache_insert(struct pci_dev *dev, unsigned long alo, piar->pcidev = dev; piar->flags = flags; +#ifdef DEBUG + printk(KERN_DEBUG "PIAR: insert range=[%lx:%lx] dev=%s\n", + alo, ahi, pci_name (dev)); +#endif + rb_link_node(&piar->rb_node, parent, p); rb_insert_color(&piar->rb_node, &pci_io_addr_cache_root.rb_root); @@ -260,18 +260,17 @@ static void __pci_addr_cache_insert_device(struct pci_dev *dev) dn = pci_device_to_OF_node(dev); if (!dn) { - printk(KERN_WARNING "PCI: no pci dn found for dev=%s\n", - pci_name(dev)); + printk(KERN_WARNING "PCI: no pci dn found for dev=%s\n", pci_name(dev)); return; } /* Skip any devices for which EEH is not enabled. */ - pdn = dn->data; + pdn = PCI_DN(dn); if (!(pdn->eeh_mode & EEH_MODE_SUPPORTED) || pdn->eeh_mode & EEH_MODE_NOCHECK) { #ifdef DEBUG - printk(KERN_INFO "PCI: skip building address cache for=%s\n", - pci_name(dev)); + printk(KERN_INFO "PCI: skip building address cache for=%s - %s\n", + pci_name(dev), pdn->node->full_name); #endif return; } @@ -307,7 +306,7 @@ static void __pci_addr_cache_insert_device(struct pci_dev *dev) * we maintain a cache of devices that can be quickly searched. * This routine adds a device to that cache. */ -void pci_addr_cache_insert_device(struct pci_dev *dev) +static void pci_addr_cache_insert_device(struct pci_dev *dev) { unsigned long flags; @@ -350,7 +349,7 @@ restart: * the tree multiple times (once per resource). * But so what; device removal doesn't need to be that fast. */ -void pci_addr_cache_remove_device(struct pci_dev *dev) +static void pci_addr_cache_remove_device(struct pci_dev *dev) { unsigned long flags; @@ -370,8 +369,12 @@ void pci_addr_cache_remove_device(struct pci_dev *dev) */ void __init pci_addr_cache_build(void) { + struct device_node *dn; struct pci_dev *dev = NULL; + if (!eeh_subsystem_enabled) + return; + spin_lock_init(&pci_io_addr_cache_root.piar_lock); while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) { @@ -380,6 +383,10 @@ void __init pci_addr_cache_build(void) continue; } pci_addr_cache_insert_device(dev); + + /* Save the BAR's; firmware doesn't restore these after EEH reset */ + dn = pci_device_to_OF_node(dev); + eeh_save_bars(dev, PCI_DN(dn)); } #ifdef DEBUG @@ -391,22 +398,26 @@ void __init pci_addr_cache_build(void) /* --------------------------------------------------------------- */ /* Above lies the PCI Address Cache. Below lies the EEH event infrastructure */ -/** - * eeh_register_notifier - Register to find out about EEH events. - * @nb: notifier block to callback on events - */ -int eeh_register_notifier(struct notifier_block *nb) +void eeh_slot_error_detail (struct pci_dn *pdn, int severity) { - return notifier_chain_register(&eeh_notifier_chain, nb); -} + unsigned long flags; + int rc; -/** - * eeh_unregister_notifier - Unregister to an EEH event notifier. - * @nb: notifier block to callback on events - */ -int eeh_unregister_notifier(struct notifier_block *nb) -{ - return notifier_chain_unregister(&eeh_notifier_chain, nb); + /* Log the error with the rtas logger */ + spin_lock_irqsave(&slot_errbuf_lock, flags); + memset(slot_errbuf, 0, eeh_error_buf_size); + + rc = rtas_call(ibm_slot_error_detail, + 8, 1, NULL, pdn->eeh_config_addr, + BUID_HI(pdn->phb->buid), + BUID_LO(pdn->phb->buid), NULL, 0, + virt_to_phys(slot_errbuf), + eeh_error_buf_size, + severity); + + if (rc == 0) + log_error(slot_errbuf, ERR_TYPE_RTAS_LOG, 0); + spin_unlock_irqrestore(&slot_errbuf_lock, flags); } /** @@ -414,16 +425,16 @@ int eeh_unregister_notifier(struct notifier_block *nb) * @dn: device node to read * @rets: array to return results in */ -static int read_slot_reset_state(struct device_node *dn, int rets[]) +static int read_slot_reset_state(struct pci_dn *pdn, int rets[]) { int token, outputs; - struct pci_dn *pdn = dn->data; if (ibm_read_slot_reset_state2 != RTAS_UNKNOWN_SERVICE) { token = ibm_read_slot_reset_state2; outputs = 4; } else { token = ibm_read_slot_reset_state; + rets[2] = 0; /* fake PE Unavailable info */ outputs = 3; } @@ -432,87 +443,69 @@ static int read_slot_reset_state(struct device_node *dn, int rets[]) } /** - * eeh_panic - call panic() for an eeh event that cannot be handled. - * The philosophy of this routine is that it is better to panic and - * halt the OS than it is to risk possible data corruption by - * oblivious device drivers that don't know better. - * - * @dev pci device that had an eeh event - * @reset_state current reset state of the device slot + * eeh_token_to_phys - convert EEH address token to phys address + * @token i/o token, should be address in the form 0xA.... */ -static void eeh_panic(struct pci_dev *dev, int reset_state) +static inline unsigned long eeh_token_to_phys(unsigned long token) { - /* - * XXX We should create a separate sysctl for this. - * - * Since the panic_on_oops sysctl is used to halt the system - * in light of potential corruption, we can use it here. - */ - if (panic_on_oops) - panic("EEH: MMIO failure (%d) on device:%s\n", reset_state, - pci_name(dev)); - else { - __get_cpu_var(ignored_failures)++; - printk(KERN_INFO "EEH: Ignored MMIO failure (%d) on device:%s\n", - reset_state, pci_name(dev)); - } + pte_t *ptep; + unsigned long pa; + + ptep = find_linux_pte(init_mm.pgd, token); + if (!ptep) + return token; + pa = pte_pfn(*ptep) << PAGE_SHIFT; + + return pa | (token & (PAGE_SIZE-1)); } -/** - * eeh_event_handler - dispatch EEH events. The detection of a frozen - * slot can occur inside an interrupt, where it can be hard to do - * anything about it. The goal of this routine is to pull these - * detection events out of the context of the interrupt handler, and - * re-dispatch them for processing at a later time in a normal context. - * - * @dummy - unused +/** + * Return the "partitionable endpoint" (pe) under which this device lies */ -static void eeh_event_handler(void *dummy) +static struct device_node * find_device_pe(struct device_node *dn) { - unsigned long flags; - struct eeh_event *event; - - while (1) { - spin_lock_irqsave(&eeh_eventlist_lock, flags); - event = NULL; - if (!list_empty(&eeh_eventlist)) { - event = list_entry(eeh_eventlist.next, struct eeh_event, list); - list_del(&event->list); - } - spin_unlock_irqrestore(&eeh_eventlist_lock, flags); - if (event == NULL) - break; - - printk(KERN_INFO "EEH: MMIO failure (%d), notifiying device " - "%s\n", event->reset_state, - pci_name(event->dev)); + while ((dn->parent) && PCI_DN(dn->parent) && + (PCI_DN(dn->parent)->eeh_mode & EEH_MODE_SUPPORTED)) { + dn = dn->parent; + } + return dn; +} - atomic_set(&eeh_fail_count, 0); - notifier_call_chain (&eeh_notifier_chain, - EEH_NOTIFY_FREEZE, event); +/** Mark all devices that are peers of this device as failed. + * Mark the device driver too, so that it can see the failure + * immediately; this is critical, since some drivers poll + * status registers in interrupts ... If a driver is polling, + * and the slot is frozen, then the driver can deadlock in + * an interrupt context, which is bad. + */ - __get_cpu_var(slot_resets)++; +static inline void __eeh_mark_slot (struct device_node *dn) +{ + while (dn) { + PCI_DN(dn)->eeh_mode |= EEH_MODE_ISOLATED; - pci_dev_put(event->dev); - kfree(event); + if (dn->child) + __eeh_mark_slot (dn->child); + dn = dn->sibling; } } -/** - * eeh_token_to_phys - convert EEH address token to phys address - * @token i/o token, should be address in the form 0xE.... - */ -static inline unsigned long eeh_token_to_phys(unsigned long token) +static inline void __eeh_clear_slot (struct device_node *dn) { - pte_t *ptep; - unsigned long pa; - - ptep = find_linux_pte(init_mm.pgd, token); - if (!ptep) - return token; - pa = pte_pfn(*ptep) << PAGE_SHIFT; + while (dn) { + PCI_DN(dn)->eeh_mode &= ~EEH_MODE_ISOLATED; + if (dn->child) + __eeh_clear_slot (dn->child); + dn = dn->sibling; + } +} - return pa | (token & (PAGE_SIZE-1)); +static inline void eeh_clear_slot (struct device_node *dn) +{ + unsigned long flags; + spin_lock_irqsave(&confirm_error_lock, flags); + __eeh_clear_slot (dn); + spin_unlock_irqrestore(&confirm_error_lock, flags); } /** @@ -526,7 +519,7 @@ static inline unsigned long eeh_token_to_phys(unsigned long token) * will query firmware for the EEH status. * * Returns 0 if there has not been an EEH error; otherwise returns - * a non-zero value and queues up a solt isolation event notification. + * a non-zero value and queues up a slot isolation event notification. * * It is safe to call this routine in an interrupt context. */ @@ -535,42 +528,60 @@ int eeh_dn_check_failure(struct device_node *dn, struct pci_dev *dev) int ret; int rets[3]; unsigned long flags; - int rc, reset_state; - struct eeh_event *event; struct pci_dn *pdn; + struct device_node *pe_dn; + int rc = 0; __get_cpu_var(total_mmio_ffs)++; if (!eeh_subsystem_enabled) return 0; - if (!dn) + if (!dn) { + __get_cpu_var(no_dn)++; return 0; - pdn = dn->data; + } + pdn = PCI_DN(dn); /* Access to IO BARs might get this far and still not want checking. */ - if (!pdn->eeh_capable || !(pdn->eeh_mode & EEH_MODE_SUPPORTED) || + if (!(pdn->eeh_mode & EEH_MODE_SUPPORTED) || pdn->eeh_mode & EEH_MODE_NOCHECK) { + __get_cpu_var(ignored_check)++; +#ifdef DEBUG + printk ("EEH:ignored check (%x) for %s %s\n", + pdn->eeh_mode, pci_name (dev), dn->full_name); +#endif return 0; } if (!pdn->eeh_config_addr) { + __get_cpu_var(no_cfg_addr)++; return 0; } - /* - * If we already have a pending isolation event for this - * slot, we know it's bad already, we don't need to check... + /* If we already have a pending isolation event for this + * slot, we know it's bad already, we don't need to check. + * Do this checking under a lock; as multiple PCI devices + * in one slot might report errors simultaneously, and we + * only want one error recovery routine running. */ + spin_lock_irqsave(&confirm_error_lock, flags); + rc = 1; if (pdn->eeh_mode & EEH_MODE_ISOLATED) { - atomic_inc(&eeh_fail_count); - if (atomic_read(&eeh_fail_count) >= EEH_MAX_FAILS) { + pdn->eeh_check_count ++; + if (pdn->eeh_check_count >= EEH_MAX_FAILS) { + printk (KERN_ERR "EEH: Device driver ignored %d bad reads, panicing\n", + pdn->eeh_check_count); + dump_stack(); + /* re-read the slot reset state */ - if (read_slot_reset_state(dn, rets) != 0) + if (read_slot_reset_state(pdn, rets) != 0) rets[0] = -1; /* reset state unknown */ - eeh_panic(dev, rets[0]); + + /* If we are here, then we hit an infinite loop. Stop. */ + panic("EEH: MMIO halt (%d) on device:%s\n", rets[0], pci_name(dev)); } - return 0; + goto dn_unlock; } /* @@ -580,66 +591,70 @@ int eeh_dn_check_failure(struct device_node *dn, struct pci_dev *dev) * function zero of a multi-function device. * In any case they must share a common PHB. */ - ret = read_slot_reset_state(dn, rets); - if (!(ret == 0 && rets[1] == 1 && (rets[0] == 2 || rets[0] == 4))) { + ret = read_slot_reset_state(pdn, rets); + + /* If the call to firmware failed, punt */ + if (ret != 0) { + printk(KERN_WARNING "EEH: read_slot_reset_state() failed; rc=%d dn=%s\n", + ret, dn->full_name); __get_cpu_var(false_positives)++; - return 0; + rc = 0; + goto dn_unlock; } - /* prevent repeated reports of this failure */ - pdn->eeh_mode |= EEH_MODE_ISOLATED; - - reset_state = rets[0]; - - spin_lock_irqsave(&slot_errbuf_lock, flags); - memset(slot_errbuf, 0, eeh_error_buf_size); - - rc = rtas_call(ibm_slot_error_detail, - 8, 1, NULL, pdn->eeh_config_addr, - BUID_HI(pdn->phb->buid), - BUID_LO(pdn->phb->buid), NULL, 0, - virt_to_phys(slot_errbuf), - eeh_error_buf_size, - 1 /* Temporary Error */); - - if (rc == 0) - log_error(slot_errbuf, ERR_TYPE_RTAS_LOG, 0); - spin_unlock_irqrestore(&slot_errbuf_lock, flags); - - printk(KERN_INFO "EEH: MMIO failure (%d) on device: %s %s\n", - rets[0], dn->name, dn->full_name); - event = kmalloc(sizeof(*event), GFP_ATOMIC); - if (event == NULL) { - eeh_panic(dev, reset_state); - return 1; - } + /* If EEH is not supported on this device, punt. */ + if (rets[1] != 1) { + printk(KERN_WARNING "EEH: event on unsupported device, rc=%d dn=%s\n", + ret, dn->full_name); + __get_cpu_var(false_positives)++; + rc = 0; + goto dn_unlock; + } - event->dev = dev; - event->dn = dn; - event->reset_state = reset_state; + /* If not the kind of error we know about, punt. */ + if (rets[0] != 2 && rets[0] != 4 && rets[0] != 5) { + __get_cpu_var(false_positives)++; + rc = 0; + goto dn_unlock; + } - /* We may or may not be called in an interrupt context */ - spin_lock_irqsave(&eeh_eventlist_lock, flags); - list_add(&event->list, &eeh_eventlist); - spin_unlock_irqrestore(&eeh_eventlist_lock, flags); + /* Note that config-io to empty slots may fail; + * we recognize empty because they don't have children. */ + if ((rets[0] == 5) && (dn->child == NULL)) { + __get_cpu_var(false_positives)++; + rc = 0; + goto dn_unlock; + } + __get_cpu_var(slot_resets)++; + + /* Avoid repeated reports of this failure, including problems + * with other functions on this device, and functions under + * bridges. */ + pe_dn = find_device_pe (dn); + __eeh_mark_slot (pe_dn); + spin_unlock_irqrestore(&confirm_error_lock, flags); + + eeh_send_failure_event (dn, dev, rets[0], rets[2]); + /* Most EEH events are due to device driver bugs. Having * a stack trace will help the device-driver authors figure * out what happened. So print that out. */ - dump_stack(); - schedule_work(&eeh_event_wq); + if (rets[0] != 5) dump_stack(); + return 1; - return 0; +dn_unlock: + spin_unlock_irqrestore(&confirm_error_lock, flags); + return rc; } -EXPORT_SYMBOL(eeh_dn_check_failure); +EXPORT_SYMBOL_GPL(eeh_dn_check_failure); /** * eeh_check_failure - check if all 1's data is due to EEH slot freeze * @token i/o token, should be address in the form 0xA.... * @val value, should be all 1's (XXX why do we need this arg??) * - * Check for an eeh failure at the given token address. * Check for an EEH failure at the given token address. Call this * routine if the result of a read was all 0xff's and you want to * find out if this is due to an EEH slot freeze event. This routine @@ -656,8 +671,10 @@ unsigned long eeh_check_failure(const volatile void __iomem *token, unsigned lon /* Finding the phys addr + pci device; this is pretty quick. */ addr = eeh_token_to_phys((unsigned long __force) token); dev = pci_get_device_by_addr(addr); - if (!dev) + if (!dev) { + __get_cpu_var(no_device)++; return val; + } dn = pci_device_to_OF_node(dev); eeh_dn_check_failure (dn, dev); @@ -668,6 +685,214 @@ unsigned long eeh_check_failure(const volatile void __iomem *token, unsigned lon EXPORT_SYMBOL(eeh_check_failure); +/* ------------------------------------------------------------- */ +/* The code below deals with error recovery */ + +/** Return negative value if a permanent error, else return + * a number of milliseconds to wait until the PCI slot is + * ready to be used. + */ +static int +eeh_slot_availability(struct pci_dn *pdn) +{ + int rc; + int rets[3]; + + rc = read_slot_reset_state(pdn, rets); + + if (rc) return rc; + + if (rets[1] == 0) return -1; /* EEH is not supported */ + if (rets[0] == 0) return 0; /* Oll Korrect */ + if (rets[0] == 5) { + if (rets[2] == 0) return -1; /* permanently unavailable */ + return rets[2]; /* number of millisecs to wait */ + } + return -1; +} + +/** rtas_pci_slot_reset raises/lowers the pci #RST line + * state: 1/0 to raise/lower the #RST + * + * Clear the EEH-frozen condition on a slot. This routine + * asserts the PCI #RST line if the 'state' argument is '1', + * and drops the #RST line if 'state is '0'. This routine is + * safe to call in an interrupt context. + * + */ + +static void +rtas_pci_slot_reset(struct pci_dn *pdn, int state) +{ + int rc; + + BUG_ON (pdn==NULL); + + if (!pdn->phb) { + printk (KERN_WARNING "EEH: in slot reset, device node %s has no phb\n", + pdn->node->full_name); + return; + } + + rc = rtas_call(ibm_set_slot_reset,4,1, NULL, + pdn->eeh_config_addr, + BUID_HI(pdn->phb->buid), + BUID_LO(pdn->phb->buid), + state); + if (rc) { + printk (KERN_WARNING "EEH: Unable to reset the failed slot, (%d) #RST=%d dn=%s\n", + rc, state, pdn->node->full_name); + return; + } + + if (state == 0) + eeh_clear_slot (pdn->node->parent->child); +} + +/** rtas_set_slot_reset -- assert the pci #RST line for 1/4 second + * dn -- device node to be reset. + */ + +void +rtas_set_slot_reset(struct pci_dn *pdn) +{ + int i, rc; + + rtas_pci_slot_reset (pdn, 1); + + /* The PCI bus requires that the reset be held high for at least + * a 100 milliseconds. We wait a bit longer 'just in case'. */ + +#define PCI_BUS_RST_HOLD_TIME_MSEC 250 + msleep (PCI_BUS_RST_HOLD_TIME_MSEC); + rtas_pci_slot_reset (pdn, 0); + + /* After a PCI slot has been reset, the PCI Express spec requires + * a 1.5 second idle time for the bus to stabilize, before starting + * up traffic. */ +#define PCI_BUS_SETTLE_TIME_MSEC 1800 + msleep (PCI_BUS_SETTLE_TIME_MSEC); + + /* Now double check with the firmware to make sure the device is + * ready to be used; if not, wait for recovery. */ + for (i=0; i<10; i++) { + rc = eeh_slot_availability (pdn); + if (rc <= 0) break; + + msleep (rc+100); + } +} + +/* ------------------------------------------------------- */ +/** Save and restore of PCI BARs + * + * Although firmware will set up BARs during boot, it doesn't + * set up device BAR's after a device reset, although it will, + * if requested, set up bridge configuration. Thus, we need to + * configure the PCI devices ourselves. + */ + +/** + * __restore_bars - Restore the Base Address Registers + * Loads the PCI configuration space base address registers, + * the expansion ROM base address, the latency timer, and etc. + * from the saved values in the device node. + */ +static inline void __restore_bars (struct pci_dn *pdn) +{ + int i; + + if (NULL==pdn->phb) return; + for (i=4; i<10; i++) { + rtas_write_config(pdn, i*4, 4, pdn->config_space[i]); + } + + /* 12 == Expansion ROM Address */ + rtas_write_config(pdn, 12*4, 4, pdn->config_space[12]); + +#define BYTE_SWAP(OFF) (8*((OFF)/4)+3-(OFF)) +#define SAVED_BYTE(OFF) (((u8 *)(pdn->config_space))[BYTE_SWAP(OFF)]) + + rtas_write_config (pdn, PCI_CACHE_LINE_SIZE, 1, + SAVED_BYTE(PCI_CACHE_LINE_SIZE)); + + rtas_write_config (pdn, PCI_LATENCY_TIMER, 1, + SAVED_BYTE(PCI_LATENCY_TIMER)); + + /* max latency, min grant, interrupt pin and line */ + rtas_write_config(pdn, 15*4, 4, pdn->config_space[15]); +} + +/** + * eeh_restore_bars - restore the PCI config space info + * + * This routine performs a recursive walk to the children + * of this device as well. + */ +void eeh_restore_bars(struct pci_dn *pdn) +{ + struct device_node *dn; + if (!pdn) + return; + + if (! pdn->eeh_is_bridge) + __restore_bars (pdn); + + dn = pdn->node->child; + while (dn) { + eeh_restore_bars (PCI_DN(dn)); + dn = dn->sibling; + } +} + +/** + * eeh_save_bars - save device bars + * + * Save the values of the device bars. Unlike the restore + * routine, this routine is *not* recursive. This is because + * PCI devices are added individuallly; but, for the restore, + * an entire slot is reset at a time. + */ +static void eeh_save_bars(struct pci_dev * pdev, struct pci_dn *pdn) +{ + int i; + + if (!pdev || !pdn ) + return; + + for (i = 0; i < 16; i++) + pci_read_config_dword(pdev, i * 4, &pdn->config_space[i]); + + if (pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE) + pdn->eeh_is_bridge = 1; +} + +void +rtas_configure_bridge(struct pci_dn *pdn) +{ + int token = rtas_token ("ibm,configure-bridge"); + int rc; + + if (token == RTAS_UNKNOWN_SERVICE) + return; + rc = rtas_call(token,3,1, NULL, + pdn->eeh_config_addr, + BUID_HI(pdn->phb->buid), + BUID_LO(pdn->phb->buid)); + if (rc) { + printk (KERN_WARNING "EEH: Unable to configure device bridge (%d) for %s\n", + rc, pdn->node->full_name); + } +} + +/* ------------------------------------------------------------- */ +/* The code below deals with enabling EEH for devices during the + * early boot sequence. EEH must be enabled before any PCI probing + * can be done. + */ + +#define EEH_ENABLE 1 + struct eeh_early_enable_info { unsigned int buid_hi; unsigned int buid_lo; @@ -684,9 +909,11 @@ static void *early_enable_eeh(struct device_node *dn, void *data) u32 *device_id = (u32 *)get_property(dn, "device-id", NULL); u32 *regs; int enable; - struct pci_dn *pdn = dn->data; + struct pci_dn *pdn = PCI_DN(dn); pdn->eeh_mode = 0; + pdn->eeh_check_count = 0; + pdn->eeh_freeze_count = 0; if (status && strcmp(status, "ok") != 0) return NULL; /* ignore devices with bad status */ @@ -723,8 +950,9 @@ static void *early_enable_eeh(struct device_node *dn, void *data) /* First register entry is addr (00BBSS00) */ /* Try to enable eeh */ ret = rtas_call(ibm_set_eeh_option, 4, 1, NULL, - regs[0], info->buid_hi, info->buid_lo, - EEH_ENABLE); + regs[0], info->buid_hi, info->buid_lo, + EEH_ENABLE); + if (ret == 0) { eeh_subsystem_enabled = 1; pdn->eeh_mode |= EEH_MODE_SUPPORTED; @@ -736,7 +964,7 @@ static void *early_enable_eeh(struct device_node *dn, void *data) /* This device doesn't support EEH, but it may have an * EEH parent, in which case we mark it as supported. */ - if (dn->parent && dn->parent->data + if (dn->parent && PCI_DN(dn->parent) && (PCI_DN(dn->parent)->eeh_mode & EEH_MODE_SUPPORTED)) { /* Parent supports EEH. */ pdn->eeh_mode |= EEH_MODE_SUPPORTED; @@ -749,7 +977,7 @@ static void *early_enable_eeh(struct device_node *dn, void *data) dn->full_name); } - return NULL; + return NULL; } /* @@ -770,6 +998,9 @@ void __init eeh_init(void) struct device_node *phb, *np; struct eeh_early_enable_info info; + spin_lock_init(&confirm_error_lock); + spin_lock_init(&slot_errbuf_lock); + np = of_find_node_by_path("/rtas"); if (np == NULL) return; @@ -797,13 +1028,11 @@ void __init eeh_init(void) for (phb = of_find_node_by_name(NULL, "pci"); phb; phb = of_find_node_by_name(phb, "pci")) { unsigned long buid; - struct pci_dn *pci; buid = get_phb_buid(phb); - if (buid == 0 || phb->data == NULL) + if (buid == 0 || PCI_DN(phb) == NULL) continue; - pci = phb->data; info.buid_lo = BUID_LO(buid); info.buid_hi = BUID_HI(buid); traverse_pci_devices(phb, early_enable_eeh, &info); @@ -832,11 +1061,13 @@ void eeh_add_device_early(struct device_node *dn) struct pci_controller *phb; struct eeh_early_enable_info info; - if (!dn || !dn->data) + if (!dn || !PCI_DN(dn)) return; phb = PCI_DN(dn)->phb; if (NULL == phb || 0 == phb->buid) { - printk(KERN_WARNING "EEH: Expected buid but found none\n"); + printk(KERN_WARNING "EEH: Expected buid but found none for %s\n", + dn->full_name); + dump_stack(); return; } @@ -844,7 +1075,7 @@ void eeh_add_device_early(struct device_node *dn) info.buid_lo = BUID_LO(phb->buid); early_enable_eeh(dn, &info); } -EXPORT_SYMBOL(eeh_add_device_early); +EXPORT_SYMBOL_GPL(eeh_add_device_early); /** * eeh_add_device_late - perform EEH initialization for the indicated pci device @@ -855,6 +1086,9 @@ EXPORT_SYMBOL(eeh_add_device_early); */ void eeh_add_device_late(struct pci_dev *dev) { + struct device_node *dn; + struct pci_dn *pdn; + if (!dev || !eeh_subsystem_enabled) return; @@ -862,9 +1096,15 @@ void eeh_add_device_late(struct pci_dev *dev) printk(KERN_DEBUG "EEH: adding device %s\n", pci_name(dev)); #endif + pci_dev_get (dev); + dn = pci_device_to_OF_node(dev); + pdn = PCI_DN(dn); + pdn->pcidev = dev; + pci_addr_cache_insert_device (dev); + eeh_save_bars(dev, pdn); } -EXPORT_SYMBOL(eeh_add_device_late); +EXPORT_SYMBOL_GPL(eeh_add_device_late); /** * eeh_remove_device - undo EEH setup for the indicated pci device @@ -875,6 +1115,7 @@ EXPORT_SYMBOL(eeh_add_device_late); */ void eeh_remove_device(struct pci_dev *dev) { + struct device_node *dn; if (!dev || !eeh_subsystem_enabled) return; @@ -883,20 +1124,29 @@ void eeh_remove_device(struct pci_dev *dev) printk(KERN_DEBUG "EEH: remove device %s\n", pci_name(dev)); #endif pci_addr_cache_remove_device(dev); + + dn = pci_device_to_OF_node(dev); + PCI_DN(dn)->pcidev = NULL; + pci_dev_put (dev); } -EXPORT_SYMBOL(eeh_remove_device); +EXPORT_SYMBOL_GPL(eeh_remove_device); static int proc_eeh_show(struct seq_file *m, void *v) { unsigned int cpu; unsigned long ffs = 0, positives = 0, failures = 0; unsigned long resets = 0; + unsigned long no_dev = 0, no_dn = 0, no_cfg = 0, no_check = 0; for_each_cpu(cpu) { ffs += per_cpu(total_mmio_ffs, cpu); positives += per_cpu(false_positives, cpu); failures += per_cpu(ignored_failures, cpu); resets += per_cpu(slot_resets, cpu); + no_dev += per_cpu(no_device, cpu); + no_dn += per_cpu(no_dn, cpu); + no_cfg += per_cpu(no_cfg_addr, cpu); + no_check += per_cpu(ignored_check, cpu); } if (0 == eeh_subsystem_enabled) { @@ -904,13 +1154,17 @@ static int proc_eeh_show(struct seq_file *m, void *v) seq_printf(m, "eeh_total_mmio_ffs=%ld\n", ffs); } else { seq_printf(m, "EEH Subsystem is enabled\n"); - seq_printf(m, "eeh_total_mmio_ffs=%ld\n" - "eeh_false_positives=%ld\n" - "eeh_ignored_failures=%ld\n" - "eeh_slot_resets=%ld\n" - "eeh_fail_count=%d\n", - ffs, positives, failures, resets, - eeh_fail_count.counter); + seq_printf(m, + "no device=%ld\n" + "no device node=%ld\n" + "no config address=%ld\n" + "check not wanted=%ld\n" + "eeh_total_mmio_ffs=%ld\n" + "eeh_false_positives=%ld\n" + "eeh_ignored_failures=%ld\n" + "eeh_slot_resets=%ld\n", + no_dev, no_dn, no_cfg, no_check, + ffs, positives, failures, resets); } return 0; diff --git a/arch/powerpc/platforms/pseries/eeh_event.c b/arch/powerpc/platforms/pseries/eeh_event.c new file mode 100644 index 000000000000..92497333c2b6 --- /dev/null +++ b/arch/powerpc/platforms/pseries/eeh_event.c @@ -0,0 +1,155 @@ +/* + * eeh_event.c + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Copyright (c) 2005 Linas Vepstas <linas@linas.org> + */ + +#include <linux/list.h> +#include <linux/pci.h> +#include <asm/eeh_event.h> + +/** Overview: + * EEH error states may be detected within exception handlers; + * however, the recovery processing needs to occur asynchronously + * in a normal kernel context and not an interrupt context. + * This pair of routines creates an event and queues it onto a + * work-queue, where a worker thread can drive recovery. + */ + +/* EEH event workqueue setup. */ +static spinlock_t eeh_eventlist_lock = SPIN_LOCK_UNLOCKED; +LIST_HEAD(eeh_eventlist); +static void eeh_thread_launcher(void *); +DECLARE_WORK(eeh_event_wq, eeh_thread_launcher, NULL); + +/** + * eeh_panic - call panic() for an eeh event that cannot be handled. + * The philosophy of this routine is that it is better to panic and + * halt the OS than it is to risk possible data corruption by + * oblivious device drivers that don't know better. + * + * @dev pci device that had an eeh event + * @reset_state current reset state of the device slot + */ +static void eeh_panic(struct pci_dev *dev, int reset_state) +{ + /* + * Since the panic_on_oops sysctl is used to halt the system + * in light of potential corruption, we can use it here. + */ + if (panic_on_oops) { + panic("EEH: MMIO failure (%d) on device:%s\n", reset_state, + pci_name(dev)); + } + else { + printk(KERN_INFO "EEH: Ignored MMIO failure (%d) on device:%s\n", + reset_state, pci_name(dev)); + } +} + +/** + * eeh_event_handler - dispatch EEH events. The detection of a frozen + * slot can occur inside an interrupt, where it can be hard to do + * anything about it. The goal of this routine is to pull these + * detection events out of the context of the interrupt handler, and + * re-dispatch them for processing at a later time in a normal context. + * + * @dummy - unused + */ +static int eeh_event_handler(void * dummy) +{ + unsigned long flags; + struct eeh_event *event; + + daemonize ("eehd"); + + while (1) { + set_current_state(TASK_INTERRUPTIBLE); + + spin_lock_irqsave(&eeh_eventlist_lock, flags); + event = NULL; + if (!list_empty(&eeh_eventlist)) { + event = list_entry(eeh_eventlist.next, struct eeh_event, list); + list_del(&event->list); + } + spin_unlock_irqrestore(&eeh_eventlist_lock, flags); + if (event == NULL) + break; + + printk(KERN_INFO "EEH: Detected PCI bus error on device %s\n", + pci_name(event->dev)); + + eeh_panic (event->dev, event->state); + + kfree(event); + } + + return 0; +} + +/** + * eeh_thread_launcher + * + * @dummy - unused + */ +static void eeh_thread_launcher(void *dummy) +{ + if (kernel_thread(eeh_event_handler, NULL, CLONE_KERNEL) < 0) + printk(KERN_ERR "Failed to start EEH daemon\n"); +} + +/** + * eeh_send_failure_event - generate a PCI error event + * @dev pci device + * + * This routine can be called within an interrupt context; + * the actual event will be delivered in a normal context + * (from a workqueue). + */ +int eeh_send_failure_event (struct device_node *dn, + struct pci_dev *dev, + int state, + int time_unavail) +{ + unsigned long flags; + struct eeh_event *event; + + event = kmalloc(sizeof(*event), GFP_ATOMIC); + if (event == NULL) { + printk (KERN_ERR "EEH: out of memory, event not handled\n"); + return 1; + } + + if (dev) + pci_dev_get(dev); + + event->dn = dn; + event->dev = dev; + event->state = state; + event->time_unavail = time_unavail; + + /* We may or may not be called in an interrupt context */ + spin_lock_irqsave(&eeh_eventlist_lock, flags); + list_add(&event->list, &eeh_eventlist); + spin_unlock_irqrestore(&eeh_eventlist_lock, flags); + + schedule_work(&eeh_event_wq); + + return 0; +} + +/********************** END OF FILE ******************************/ diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index e78c39368841..a093a0d4dd69 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -469,6 +469,7 @@ static inline void dedicated_idle_sleep(unsigned int cpu) * more. */ clear_thread_flag(TIF_POLLING_NRFLAG); + smp_mb__after_clear_bit(); /* * SMT dynamic mode. Cede will result in this thread going @@ -481,6 +482,7 @@ static inline void dedicated_idle_sleep(unsigned int cpu) cede_processor(); else local_irq_enable(); + set_thread_flag(TIF_POLLING_NRFLAG); } else { /* * Give the HV an opportunity at the processor, since we are @@ -492,11 +494,11 @@ static inline void dedicated_idle_sleep(unsigned int cpu) static void pseries_dedicated_idle(void) { - long oldval; struct paca_struct *lpaca = get_paca(); 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) { /* @@ -505,10 +507,7 @@ static void pseries_dedicated_idle(void) */ lpaca->lppaca.idle = 1; - oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED); - if (!oldval) { - set_thread_flag(TIF_POLLING_NRFLAG); - + if (!need_resched()) { start_snooze = __get_tb() + *smt_snooze_delay * tb_ticks_per_usec; @@ -531,15 +530,14 @@ static void pseries_dedicated_idle(void) } HMT_medium(); - clear_thread_flag(TIF_POLLING_NRFLAG); - } else { - set_need_resched(); } lpaca->lppaca.idle = 0; ppc64_runlatch_on(); + preempt_enable_no_resched(); schedule(); + preempt_disable(); if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING) cpu_die(); @@ -583,7 +581,9 @@ static void pseries_shared_idle(void) lpaca->lppaca.idle = 0; ppc64_runlatch_on(); + preempt_enable_no_resched(); schedule(); + preempt_disable(); if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING) cpu_die(); diff --git a/arch/ppc/boot/include/of1275.h b/arch/ppc/boot/include/of1275.h index 69173df76db0..4ed88acfa73a 100644 --- a/arch/ppc/boot/include/of1275.h +++ b/arch/ppc/boot/include/of1275.h @@ -19,6 +19,9 @@ extern prom_entry of_prom_entry; /* function declarations */ +int call_prom(const char *service, int nargs, int nret, ...); +int call_prom_ret(const char *service, int nargs, int nret, + unsigned int *rets, ...); void * claim(unsigned int virt, unsigned int size, unsigned int align); int map(unsigned int phys, unsigned int virt, unsigned int size); void enter(void); diff --git a/arch/ppc/boot/of1275/Makefile b/arch/ppc/boot/of1275/Makefile index 02e6f235d7cb..0b979c004972 100644 --- a/arch/ppc/boot/of1275/Makefile +++ b/arch/ppc/boot/of1275/Makefile @@ -3,4 +3,4 @@ # lib-y := claim.o enter.o exit.o finddevice.o getprop.o ofinit.o \ - ofstdio.o read.o release.o write.o map.o + ofstdio.o read.o release.o write.o map.o call_prom.o diff --git a/arch/ppc/boot/of1275/call_prom.c b/arch/ppc/boot/of1275/call_prom.c new file mode 100644 index 000000000000..9479a3a2b8c7 --- /dev/null +++ b/arch/ppc/boot/of1275/call_prom.c @@ -0,0 +1,74 @@ +/* + * Copyright (C) 1996-2005 Paul Mackerras. + * + * 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 "of1275.h" +#include <stdarg.h> + +int call_prom(const char *service, int nargs, int nret, ...) +{ + int i; + struct prom_args { + const char *service; + int nargs; + int nret; + unsigned int args[12]; + } args; + va_list list; + + args.service = service; + args.nargs = nargs; + args.nret = nret; + + va_start(list, nret); + for (i = 0; i < nargs; i++) + args.args[i] = va_arg(list, unsigned int); + va_end(list); + + for (i = 0; i < nret; i++) + args.args[nargs+i] = 0; + + if (of_prom_entry(&args) < 0) + return -1; + + return (nret > 0)? args.args[nargs]: 0; +} + +int call_prom_ret(const char *service, int nargs, int nret, + unsigned int *rets, ...) +{ + int i; + struct prom_args { + const char *service; + int nargs; + int nret; + unsigned int args[12]; + } args; + va_list list; + + args.service = service; + args.nargs = nargs; + args.nret = nret; + + va_start(list, rets); + for (i = 0; i < nargs; i++) + args.args[i] = va_arg(list, unsigned int); + va_end(list); + + for (i = 0; i < nret; i++) + args.args[nargs+i] = 0; + + if (of_prom_entry(&args) < 0) + return -1; + + if (rets != (void *) 0) + for (i = 1; i < nret; ++i) + rets[i-1] = args.args[nargs+i]; + + return (nret > 0)? args.args[nargs]: 0; +} diff --git a/arch/ppc/boot/of1275/claim.c b/arch/ppc/boot/of1275/claim.c index 13169a5c4339..1ed3aeeff8ae 100644 --- a/arch/ppc/boot/of1275/claim.c +++ b/arch/ppc/boot/of1275/claim.c @@ -9,27 +9,84 @@ */ #include "of1275.h" +#include "nonstdio.h" -void * -claim(unsigned int virt, unsigned int size, unsigned int align) +/* + * Older OF's require that when claiming a specific range of addresses, + * we claim the physical space in the /memory node and the virtual + * space in the chosen mmu node, and then do a map operation to + * map virtual to physical. + */ +static int need_map = -1; +static ihandle chosen_mmu; +static phandle memory; + +/* returns true if s2 is a prefix of s1 */ +static int string_match(const char *s1, const char *s2) +{ + for (; *s2; ++s2) + if (*s1++ != *s2) + return 0; + return 1; +} + +static int check_of_version(void) +{ + phandle oprom, chosen; + char version[64]; + + oprom = finddevice("/openprom"); + if (oprom == OF_INVALID_HANDLE) + return 0; + if (getprop(oprom, "model", version, sizeof(version)) <= 0) + return 0; + version[sizeof(version)-1] = 0; + printf("OF version = '%s'\n", version); + if (!string_match(version, "Open Firmware, 1.") + && !string_match(version, "FirmWorks,3.")) + return 0; + chosen = finddevice("/chosen"); + if (chosen == OF_INVALID_HANDLE) { + chosen = finddevice("/chosen@0"); + if (chosen == OF_INVALID_HANDLE) { + printf("no chosen\n"); + return 0; + } + } + if (getprop(chosen, "mmu", &chosen_mmu, sizeof(chosen_mmu)) <= 0) { + printf("no mmu\n"); + return 0; + } + memory = (ihandle) call_prom("open", 1, 1, "/memory"); + if (memory == OF_INVALID_HANDLE) { + memory = (ihandle) call_prom("open", 1, 1, "/memory@0"); + if (memory == OF_INVALID_HANDLE) { + printf("no memory node\n"); + return 0; + } + } + printf("old OF detected\n"); + return 1; +} + +void *claim(unsigned int virt, unsigned int size, unsigned int align) { - struct prom_args { - char *service; - int nargs; - int nret; - unsigned int virt; - unsigned int size; - unsigned int align; - void *ret; - } args; + int ret; + unsigned int result; - args.service = "claim"; - args.nargs = 3; - args.nret = 1; - args.virt = virt; - args.size = size; - args.align = align; - args.ret = (void *) 0; - (*of_prom_entry)(&args); - return args.ret; + if (need_map < 0) + need_map = check_of_version(); + if (align || !need_map) + return (void *) call_prom("claim", 3, 1, virt, size, align); + + ret = call_prom_ret("call-method", 5, 2, &result, "claim", memory, + align, size, virt); + if (ret != 0 || result == -1) + return (void *) -1; + ret = call_prom_ret("call-method", 5, 2, &result, "claim", chosen_mmu, + align, size, virt); + /* 0x12 == coherent + read/write */ + ret = call_prom("call-method", 6, 1, "map", chosen_mmu, + 0x12, size, virt, virt); + return virt; } diff --git a/arch/ppc/boot/of1275/finddevice.c b/arch/ppc/boot/of1275/finddevice.c index 2c0f7cbb793e..0dcb1201b772 100644 --- a/arch/ppc/boot/of1275/finddevice.c +++ b/arch/ppc/boot/of1275/finddevice.c @@ -10,22 +10,7 @@ #include "of1275.h" -phandle -finddevice(const char *name) +phandle finddevice(const char *name) { - struct prom_args { - char *service; - int nargs; - int nret; - const char *devspec; - phandle device; - } args; - - args.service = "finddevice"; - args.nargs = 1; - args.nret = 1; - args.devspec = name; - args.device = OF_INVALID_HANDLE; - (*of_prom_entry)(&args); - return args.device; + return (phandle) call_prom("finddevice", 1, 1, name); } diff --git a/arch/ppc/configs/mpc834x_sys_defconfig b/arch/ppc/configs/mpc834x_sys_defconfig index 4a5522ca8207..673dc64ebcb1 100644 --- a/arch/ppc/configs/mpc834x_sys_defconfig +++ b/arch/ppc/configs/mpc834x_sys_defconfig @@ -1,16 +1,17 @@ # # Automatically generated make config: don't edit -# Linux kernel version: 2.6.11-rc4 -# Thu Feb 17 16:12:23 2005 +# Linux kernel version: 2.6.14 +# Mon Nov 7 15:38:29 2005 # CONFIG_MMU=y CONFIG_GENERIC_HARDIRQS=y CONFIG_RWSEM_XCHGADD_ALGORITHM=y CONFIG_GENERIC_CALIBRATE_DELAY=y -CONFIG_HAVE_DEC_LOCK=y CONFIG_PPC=y CONFIG_PPC32=y CONFIG_GENERIC_NVRAM=y +CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y +CONFIG_ARCH_MAY_HAVE_PC_FDC=y # # Code maturity level options @@ -18,23 +19,28 @@ CONFIG_GENERIC_NVRAM=y CONFIG_EXPERIMENTAL=y CONFIG_CLEAN_COMPILE=y CONFIG_BROKEN_ON_SMP=y +CONFIG_INIT_ENV_ARG_LIMIT=32 # # General setup # CONFIG_LOCALVERSION="" +CONFIG_LOCALVERSION_AUTO=y CONFIG_SWAP=y CONFIG_SYSVIPC=y # CONFIG_POSIX_MQUEUE is not set # CONFIG_BSD_PROCESS_ACCT is not set CONFIG_SYSCTL=y # CONFIG_AUDIT is not set -CONFIG_LOG_BUF_SHIFT=14 # CONFIG_HOTPLUG is not set CONFIG_KOBJECT_UEVENT=y # CONFIG_IKCONFIG is not set +CONFIG_INITRAMFS_SOURCE="" CONFIG_EMBEDDED=y # CONFIG_KALLSYMS is not set +CONFIG_PRINTK=y +CONFIG_BUG=y +CONFIG_BASE_FULL=y CONFIG_FUTEX=y # CONFIG_EPOLL is not set # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set @@ -44,6 +50,7 @@ CONFIG_CC_ALIGN_LABELS=0 CONFIG_CC_ALIGN_LOOPS=0 CONFIG_CC_ALIGN_JUMPS=0 # CONFIG_TINY_SHMEM is not set +CONFIG_BASE_SMALL=0 # # Loadable module support @@ -59,34 +66,84 @@ CONFIG_6xx=y # CONFIG_POWER3 is not set # CONFIG_POWER4 is not set # CONFIG_8xx is not set +# CONFIG_E200 is not set # CONFIG_E500 is not set +CONFIG_PPC_FPU=y +# CONFIG_KEXEC is not set # CONFIG_CPU_FREQ is not set +# CONFIG_WANT_EARLY_SERIAL is not set CONFIG_PPC_GEN550=y -CONFIG_83xx=y - -# -# Freescale 83xx options -# -CONFIG_MPC834x_SYS=y -CONFIG_MPC834x=y CONFIG_PPC_STD_MMU=y # # Platform options # +# CONFIG_PPC_MULTIPLATFORM is not set +# CONFIG_APUS is not set +# CONFIG_KATANA is not set +# CONFIG_WILLOW is not set +# CONFIG_CPCI690 is not set +# CONFIG_POWERPMC250 is not set +# CONFIG_CHESTNUT is not set +# CONFIG_SPRUCE is not set +# CONFIG_HDPU is not set +# CONFIG_EV64260 is not set +# CONFIG_LOPEC is not set +# CONFIG_MVME5100 is not set +# CONFIG_PPLUS is not set +# CONFIG_PRPMC750 is not set +# CONFIG_PRPMC800 is not set +# CONFIG_SANDPOINT is not set +# CONFIG_RADSTONE_PPC7D is not set +# CONFIG_PAL4 is not set +# CONFIG_GEMINI is not set +# CONFIG_EST8260 is not set +# CONFIG_SBC82xx is not set +# CONFIG_SBS8260 is not set +# CONFIG_RPX8260 is not set +# CONFIG_TQM8260 is not set +# CONFIG_ADS8272 is not set +# CONFIG_PQ2FADS is not set +# CONFIG_LITE5200 is not set +CONFIG_MPC834x_SYS=y +# CONFIG_EV64360 is not set +CONFIG_83xx=y +CONFIG_MPC834x=y # CONFIG_SMP is not set -# CONFIG_PREEMPT is not set # CONFIG_HIGHMEM is not set +# CONFIG_HZ_100 is not set +CONFIG_HZ_250=y +# CONFIG_HZ_1000 is not set +CONFIG_HZ=250 +CONFIG_PREEMPT_NONE=y +# CONFIG_PREEMPT_VOLUNTARY is not set +# CONFIG_PREEMPT is not set +CONFIG_SELECT_MEMORY_MODEL=y +CONFIG_FLATMEM_MANUAL=y +# CONFIG_DISCONTIGMEM_MANUAL is not set +# CONFIG_SPARSEMEM_MANUAL is not set +CONFIG_FLATMEM=y +CONFIG_FLAT_NODE_MEM_MAP=y +# CONFIG_SPARSEMEM_STATIC is not set +CONFIG_SPLIT_PTLOCK_CPUS=4 CONFIG_BINFMT_ELF=y # CONFIG_BINFMT_MISC is not set # CONFIG_CMDLINE_BOOL is not set +# CONFIG_PM is not set +# CONFIG_SOFTWARE_SUSPEND is not set +CONFIG_SECCOMP=y +CONFIG_ISA_DMA_API=y # # Bus options # CONFIG_GENERIC_ISA_DMA=y -# CONFIG_PCI is not set -# CONFIG_PCI_DOMAINS is not set +# CONFIG_PPC_I8259 is not set +CONFIG_PPC_INDIRECT_PCI=y +CONFIG_PCI=y +CONFIG_PCI_DOMAINS=y +# CONFIG_MPC83xx_PCI2 is not set +CONFIG_PCI_LEGACY_PROC=y # # PCCARD (PCMCIA/CardBus) support @@ -94,10 +151,6 @@ CONFIG_GENERIC_ISA_DMA=y # CONFIG_PCCARD is not set # -# PC-card bridges -# - -# # Advanced setup # # CONFIG_ADVANCED_OPTIONS is not set @@ -112,6 +165,75 @@ CONFIG_TASK_SIZE=0x80000000 CONFIG_BOOT_LOAD=0x00800000 # +# Networking +# +CONFIG_NET=y + +# +# Networking options +# +CONFIG_PACKET=y +# CONFIG_PACKET_MMAP is not set +CONFIG_UNIX=y +# CONFIG_NET_KEY is not set +CONFIG_INET=y +CONFIG_IP_MULTICAST=y +# CONFIG_IP_ADVANCED_ROUTER is not set +CONFIG_IP_FIB_HASH=y +CONFIG_IP_PNP=y +CONFIG_IP_PNP_DHCP=y +CONFIG_IP_PNP_BOOTP=y +# CONFIG_IP_PNP_RARP is not set +# CONFIG_NET_IPIP is not set +# CONFIG_NET_IPGRE is not set +# CONFIG_IP_MROUTE is not set +# CONFIG_ARPD is not set +CONFIG_SYN_COOKIES=y +# CONFIG_INET_AH is not set +# CONFIG_INET_ESP is not set +# CONFIG_INET_IPCOMP is not set +# CONFIG_INET_TUNNEL is not set +CONFIG_INET_DIAG=y +CONFIG_INET_TCP_DIAG=y +# CONFIG_TCP_CONG_ADVANCED is not set +CONFIG_TCP_CONG_BIC=y +# CONFIG_IPV6 is not set +# CONFIG_NETFILTER is not set + +# +# DCCP Configuration (EXPERIMENTAL) +# +# CONFIG_IP_DCCP is not set + +# +# SCTP Configuration (EXPERIMENTAL) +# +# CONFIG_IP_SCTP is not set +# CONFIG_ATM is not set +# CONFIG_BRIDGE is not set +# CONFIG_VLAN_8021Q is not set +# CONFIG_DECNET is not set +# CONFIG_LLC2 is not set +# CONFIG_IPX is not set +# CONFIG_ATALK is not set +# CONFIG_X25 is not set +# CONFIG_LAPB is not set +# CONFIG_NET_DIVERT is not set +# CONFIG_ECONET is not set +# CONFIG_WAN_ROUTER is not set +# CONFIG_NET_SCHED is not set +# CONFIG_NET_CLS_ROUTE is not set + +# +# Network testing +# +# CONFIG_NET_PKTGEN is not set +# CONFIG_HAMRADIO is not set +# CONFIG_IRDA is not set +# CONFIG_BT is not set +# CONFIG_IEEE80211 is not set + +# # Device Drivers # @@ -123,6 +245,11 @@ CONFIG_PREVENT_FIRMWARE_BUILD=y # CONFIG_FW_LOADER is not set # +# Connector - unified userspace <-> kernelspace linker +# +# CONFIG_CONNECTOR is not set + +# # Memory Technology Devices (MTD) # # CONFIG_MTD is not set @@ -140,15 +267,19 @@ CONFIG_PREVENT_FIRMWARE_BUILD=y # Block devices # # CONFIG_BLK_DEV_FD is not set +# CONFIG_BLK_CPQ_DA is not set +# CONFIG_BLK_CPQ_CISS_DA is not set +# CONFIG_BLK_DEV_DAC960 is not set +# CONFIG_BLK_DEV_UMEM is not set # CONFIG_BLK_DEV_COW_COMMON is not set CONFIG_BLK_DEV_LOOP=y # CONFIG_BLK_DEV_CRYPTOLOOP is not set # CONFIG_BLK_DEV_NBD is not set +# CONFIG_BLK_DEV_SX8 is not set CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_COUNT=16 CONFIG_BLK_DEV_RAM_SIZE=32768 CONFIG_BLK_DEV_INITRD=y -CONFIG_INITRAMFS_SOURCE="" # CONFIG_LBD is not set # CONFIG_CDROM_PKTCDVD is not set @@ -159,6 +290,11 @@ CONFIG_IOSCHED_NOOP=y CONFIG_IOSCHED_AS=y CONFIG_IOSCHED_DEADLINE=y CONFIG_IOSCHED_CFQ=y +CONFIG_DEFAULT_AS=y +# CONFIG_DEFAULT_DEADLINE is not set +# CONFIG_DEFAULT_CFQ is not set +# CONFIG_DEFAULT_NOOP is not set +CONFIG_DEFAULT_IOSCHED="anticipatory" # CONFIG_ATA_OVER_ETH is not set # @@ -169,6 +305,7 @@ CONFIG_IOSCHED_CFQ=y # # SCSI device support # +# CONFIG_RAID_ATTRS is not set # CONFIG_SCSI is not set # @@ -179,110 +316,116 @@ CONFIG_IOSCHED_CFQ=y # # Fusion MPT device support # +# CONFIG_FUSION is not set # # IEEE 1394 (FireWire) support # +# CONFIG_IEEE1394 is not set # # I2O device support # +# CONFIG_I2O is not set # # Macintosh device drivers # # -# Networking support +# Network device support # -CONFIG_NET=y - -# -# Networking options -# -CONFIG_PACKET=y -# CONFIG_PACKET_MMAP is not set -# CONFIG_NETLINK_DEV is not set -CONFIG_UNIX=y -# CONFIG_NET_KEY is not set -CONFIG_INET=y -CONFIG_IP_MULTICAST=y -# CONFIG_IP_ADVANCED_ROUTER is not set -CONFIG_IP_PNP=y -CONFIG_IP_PNP_DHCP=y -CONFIG_IP_PNP_BOOTP=y -# CONFIG_IP_PNP_RARP is not set -# CONFIG_NET_IPIP is not set -# CONFIG_NET_IPGRE is not set -# CONFIG_IP_MROUTE is not set -# CONFIG_ARPD is not set -CONFIG_SYN_COOKIES=y -# CONFIG_INET_AH is not set -# CONFIG_INET_ESP is not set -# CONFIG_INET_IPCOMP is not set -# CONFIG_INET_TUNNEL is not set -CONFIG_IP_TCPDIAG=y -# CONFIG_IP_TCPDIAG_IPV6 is not set -# CONFIG_IPV6 is not set -# CONFIG_NETFILTER is not set +CONFIG_NETDEVICES=y +# CONFIG_DUMMY is not set +# CONFIG_BONDING is not set +# CONFIG_EQUALIZER is not set +# CONFIG_TUN is not set # -# SCTP Configuration (EXPERIMENTAL) +# ARCnet devices # -# CONFIG_IP_SCTP is not set -# CONFIG_ATM is not set -# CONFIG_BRIDGE is not set -# CONFIG_VLAN_8021Q is not set -# CONFIG_DECNET is not set -# CONFIG_LLC2 is not set -# CONFIG_IPX is not set -# CONFIG_ATALK is not set -# CONFIG_X25 is not set -# CONFIG_LAPB is not set -# CONFIG_NET_DIVERT is not set -# CONFIG_ECONET is not set -# CONFIG_WAN_ROUTER is not set +# CONFIG_ARCNET is not set # -# QoS and/or fair queueing +# PHY device support # -# CONFIG_NET_SCHED is not set -# CONFIG_NET_CLS_ROUTE is not set +CONFIG_PHYLIB=y # -# Network testing +# MII PHY device drivers # -# CONFIG_NET_PKTGEN is not set -# CONFIG_NETPOLL is not set -# CONFIG_NET_POLL_CONTROLLER is not set -# CONFIG_HAMRADIO is not set -# CONFIG_IRDA is not set -# CONFIG_BT is not set -CONFIG_NETDEVICES=y -# CONFIG_DUMMY is not set -# CONFIG_BONDING is not set -# CONFIG_EQUALIZER is not set -# CONFIG_TUN is not set +CONFIG_MARVELL_PHY=y +# CONFIG_DAVICOM_PHY is not set +# CONFIG_QSEMI_PHY is not set +# CONFIG_LXT_PHY is not set +# CONFIG_CICADA_PHY is not set # # Ethernet (10 or 100Mbit) # CONFIG_NET_ETHERNET=y CONFIG_MII=y +# CONFIG_HAPPYMEAL is not set +# CONFIG_SUNGEM is not set +# CONFIG_CASSINI is not set +# CONFIG_NET_VENDOR_3COM is not set + +# +# Tulip family network device support +# +# CONFIG_NET_TULIP is not set +# CONFIG_HP100 is not set +CONFIG_NET_PCI=y +# CONFIG_PCNET32 is not set +# CONFIG_AMD8111_ETH is not set +# CONFIG_ADAPTEC_STARFIRE is not set +# CONFIG_B44 is not set +# CONFIG_FORCEDETH is not set +# CONFIG_DGRS is not set +# CONFIG_EEPRO100 is not set +CONFIG_E100=y +# CONFIG_FEALNX is not set +# CONFIG_NATSEMI is not set +# CONFIG_NE2K_PCI is not set +# CONFIG_8139CP is not set +# CONFIG_8139TOO is not set +# CONFIG_SIS900 is not set +# CONFIG_EPIC100 is not set +# CONFIG_SUNDANCE is not set +# CONFIG_TLAN is not set +# CONFIG_VIA_RHINE is not set # # Ethernet (1000 Mbit) # +# CONFIG_ACENIC is not set +# CONFIG_DL2K is not set +CONFIG_E1000=y +# CONFIG_E1000_NAPI is not set +# CONFIG_NS83820 is not set +# CONFIG_HAMACHI is not set +# CONFIG_YELLOWFIN is not set +# CONFIG_R8169 is not set +# CONFIG_SIS190 is not set +# CONFIG_SKGE is not set +# CONFIG_SK98LIN is not set +# CONFIG_VIA_VELOCITY is not set +# CONFIG_TIGON3 is not set +# CONFIG_BNX2 is not set CONFIG_GIANFAR=y # CONFIG_GFAR_NAPI is not set # # Ethernet (10000 Mbit) # +# CONFIG_CHELSIO_T1 is not set +# CONFIG_IXGB is not set +# CONFIG_S2IO is not set # # Token Ring devices # +# CONFIG_TR is not set # # Wireless LAN (non-hamradio) @@ -293,10 +436,14 @@ CONFIG_GIANFAR=y # Wan interfaces # # CONFIG_WAN is not set +# CONFIG_FDDI is not set +# CONFIG_HIPPI is not set # CONFIG_PPP is not set # CONFIG_SLIP is not set # CONFIG_SHAPER is not set # CONFIG_NETCONSOLE is not set +# CONFIG_NETPOLL is not set +# CONFIG_NET_POLL_CONTROLLER is not set # # ISDN subsystem @@ -323,14 +470,6 @@ CONFIG_INPUT=y # CONFIG_INPUT_EVBUG is not set # -# Input I/O drivers -# -# CONFIG_GAMEPORT is not set -CONFIG_SOUND_GAMEPORT=y -# CONFIG_SERIO is not set -# CONFIG_SERIO_I8042 is not set - -# # Input Device Drivers # # CONFIG_INPUT_KEYBOARD is not set @@ -340,6 +479,12 @@ CONFIG_SOUND_GAMEPORT=y # CONFIG_INPUT_MISC is not set # +# Hardware I/O ports +# +# CONFIG_SERIO is not set +# CONFIG_GAMEPORT is not set + +# # Character devices # # CONFIG_VT is not set @@ -358,6 +503,7 @@ CONFIG_SERIAL_8250_NR_UARTS=4 # CONFIG_SERIAL_CORE=y CONFIG_SERIAL_CORE_CONSOLE=y +# CONFIG_SERIAL_JSM is not set CONFIG_UNIX98_PTYS=y CONFIG_LEGACY_PTYS=y CONFIG_LEGACY_PTY_COUNT=256 @@ -376,6 +522,7 @@ CONFIG_GEN_RTC=y # CONFIG_GEN_RTC_X is not set # CONFIG_DTLK is not set # CONFIG_R3964 is not set +# CONFIG_APPLICOM is not set # # Ftape, the floppy tape device driver @@ -385,6 +532,12 @@ CONFIG_GEN_RTC=y # CONFIG_RAW_DRIVER is not set # +# TPM devices +# +# CONFIG_TCG_TPM is not set +# CONFIG_TELCLOCK is not set + +# # I2C support # CONFIG_I2C=y @@ -400,23 +553,68 @@ CONFIG_I2C_CHARDEV=y # # I2C Hardware Bus support # -# CONFIG_I2C_ISA is not set +# CONFIG_I2C_ALI1535 is not set +# CONFIG_I2C_ALI1563 is not set +# CONFIG_I2C_ALI15X3 is not set +# CONFIG_I2C_AMD756 is not set +# CONFIG_I2C_AMD8111 is not set +# CONFIG_I2C_I801 is not set +# CONFIG_I2C_I810 is not set +# CONFIG_I2C_PIIX4 is not set CONFIG_I2C_MPC=y +# CONFIG_I2C_NFORCE2 is not set # CONFIG_I2C_PARPORT_LIGHT is not set +# CONFIG_I2C_PROSAVAGE is not set +# CONFIG_I2C_SAVAGE4 is not set +# CONFIG_SCx200_ACB is not set +# CONFIG_I2C_SIS5595 is not set +# CONFIG_I2C_SIS630 is not set +# CONFIG_I2C_SIS96X is not set +# CONFIG_I2C_VIA is not set +# CONFIG_I2C_VIAPRO is not set +# CONFIG_I2C_VOODOO3 is not set # CONFIG_I2C_PCA_ISA is not set # -# Hardware Sensors Chip support +# Miscellaneous I2C Chip support +# +# CONFIG_SENSORS_DS1337 is not set +# CONFIG_SENSORS_DS1374 is not set +# CONFIG_SENSORS_EEPROM is not set +# CONFIG_SENSORS_PCF8574 is not set +# CONFIG_SENSORS_PCA9539 is not set +# CONFIG_SENSORS_PCF8591 is not set +# CONFIG_SENSORS_RTC8564 is not set +# CONFIG_SENSORS_M41T00 is not set +# CONFIG_SENSORS_MAX6875 is not set +# CONFIG_RTC_X1205_I2C is not set +# CONFIG_I2C_DEBUG_CORE is not set +# CONFIG_I2C_DEBUG_ALGO is not set +# CONFIG_I2C_DEBUG_BUS is not set +# CONFIG_I2C_DEBUG_CHIP is not set + +# +# Dallas's 1-wire bus +# +# CONFIG_W1 is not set + +# +# Hardware Monitoring support # -# CONFIG_I2C_SENSOR is not set +CONFIG_HWMON=y +# CONFIG_HWMON_VID is not set # CONFIG_SENSORS_ADM1021 is not set # CONFIG_SENSORS_ADM1025 is not set # CONFIG_SENSORS_ADM1026 is not set # CONFIG_SENSORS_ADM1031 is not set +# CONFIG_SENSORS_ADM9240 is not set # CONFIG_SENSORS_ASB100 is not set +# CONFIG_SENSORS_ATXP1 is not set # CONFIG_SENSORS_DS1621 is not set # CONFIG_SENSORS_FSCHER is not set +# CONFIG_SENSORS_FSCPOS is not set # CONFIG_SENSORS_GL518SM is not set +# CONFIG_SENSORS_GL520SM is not set # CONFIG_SENSORS_IT87 is not set # CONFIG_SENSORS_LM63 is not set # CONFIG_SENSORS_LM75 is not set @@ -427,33 +625,26 @@ CONFIG_I2C_MPC=y # CONFIG_SENSORS_LM85 is not set # CONFIG_SENSORS_LM87 is not set # CONFIG_SENSORS_LM90 is not set +# CONFIG_SENSORS_LM92 is not set # CONFIG_SENSORS_MAX1619 is not set # CONFIG_SENSORS_PC87360 is not set -# CONFIG_SENSORS_SMSC47B397 is not set +# CONFIG_SENSORS_SIS5595 is not set # CONFIG_SENSORS_SMSC47M1 is not set +# CONFIG_SENSORS_SMSC47B397 is not set +# CONFIG_SENSORS_VIA686A is not set # CONFIG_SENSORS_W83781D is not set +# CONFIG_SENSORS_W83792D is not set # CONFIG_SENSORS_W83L785TS is not set # CONFIG_SENSORS_W83627HF is not set +# CONFIG_SENSORS_W83627EHF is not set +# CONFIG_HWMON_DEBUG_CHIP is not set # -# Other I2C Chip support -# -# CONFIG_SENSORS_EEPROM is not set -# CONFIG_SENSORS_PCF8574 is not set -# CONFIG_SENSORS_PCF8591 is not set -# CONFIG_SENSORS_RTC8564 is not set -# CONFIG_I2C_DEBUG_CORE is not set -# CONFIG_I2C_DEBUG_ALGO is not set -# CONFIG_I2C_DEBUG_BUS is not set -# CONFIG_I2C_DEBUG_CHIP is not set - -# -# Dallas's 1-wire bus +# Misc devices # -# CONFIG_W1 is not set # -# Misc devices +# Multimedia Capabilities Port drivers # # @@ -479,11 +670,12 @@ CONFIG_I2C_MPC=y # # USB support # -# CONFIG_USB_ARCH_HAS_HCD is not set -# CONFIG_USB_ARCH_HAS_OHCI is not set +CONFIG_USB_ARCH_HAS_HCD=y +CONFIG_USB_ARCH_HAS_OHCI=y +# CONFIG_USB is not set # -# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support' may also be needed; see USB_STORAGE Help for more information +# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support' # # @@ -502,10 +694,15 @@ CONFIG_I2C_MPC=y # CONFIG_INFINIBAND is not set # +# SN Devices +# + +# # File systems # CONFIG_EXT2_FS=y # CONFIG_EXT2_FS_XATTR is not set +# CONFIG_EXT2_FS_XIP is not set CONFIG_EXT3_FS=y CONFIG_EXT3_FS_XATTR=y # CONFIG_EXT3_FS_POSIX_ACL is not set @@ -515,17 +712,16 @@ CONFIG_JBD=y CONFIG_FS_MBCACHE=y # CONFIG_REISERFS_FS is not set # CONFIG_JFS_FS is not set - -# -# XFS support -# +# CONFIG_FS_POSIX_ACL is not set # CONFIG_XFS_FS is not set # CONFIG_MINIX_FS is not set # CONFIG_ROMFS_FS is not set +CONFIG_INOTIFY=y # CONFIG_QUOTA is not set CONFIG_DNOTIFY=y # CONFIG_AUTOFS_FS is not set # CONFIG_AUTOFS4_FS is not set +# CONFIG_FUSE_FS is not set # # CD-ROM/DVD Filesystems @@ -546,12 +742,10 @@ CONFIG_DNOTIFY=y CONFIG_PROC_FS=y CONFIG_PROC_KCORE=y CONFIG_SYSFS=y -# CONFIG_DEVFS_FS is not set -# CONFIG_DEVPTS_FS_XATTR is not set CONFIG_TMPFS=y -# CONFIG_TMPFS_XATTR is not set # CONFIG_HUGETLB_PAGE is not set CONFIG_RAMFS=y +# CONFIG_RELAYFS_FS is not set # # Miscellaneous filesystems @@ -580,6 +774,7 @@ CONFIG_NFS_FS=y # CONFIG_NFSD is not set CONFIG_ROOT_NFS=y CONFIG_LOCKD=y +CONFIG_NFS_COMMON=y CONFIG_SUNRPC=y # CONFIG_RPCSEC_GSS_KRB5 is not set # CONFIG_RPCSEC_GSS_SPKM3 is not set @@ -588,6 +783,7 @@ CONFIG_SUNRPC=y # CONFIG_NCP_FS is not set # CONFIG_CODA_FS is not set # CONFIG_AFS_FS is not set +# CONFIG_9P_FS is not set # # Partition Types @@ -614,6 +810,7 @@ CONFIG_PARTITION_ADVANCED=y # Library routines # # CONFIG_CRC_CCITT is not set +# CONFIG_CRC16 is not set CONFIG_CRC32=y # CONFIG_LIBCRC32C is not set @@ -625,7 +822,9 @@ CONFIG_CRC32=y # # Kernel hacking # +# CONFIG_PRINTK_TIME is not set # CONFIG_DEBUG_KERNEL is not set +CONFIG_LOG_BUF_SHIFT=14 # CONFIG_SERIAL_TEXT_DEBUG is not set # diff --git a/arch/ppc/kernel/head_booke.h b/arch/ppc/kernel/head_booke.h index aeb349b47af3..f3d274c6b231 100644 --- a/arch/ppc/kernel/head_booke.h +++ b/arch/ppc/kernel/head_booke.h @@ -358,6 +358,6 @@ label: NORMAL_EXCEPTION_PROLOG; \ bne load_up_fpu; /* if from user, just load it up */ \ addi r3,r1,STACK_FRAME_OVERHEAD; \ - EXC_XFER_EE_LITE(0x800, KernelFP) + EXC_XFER_EE_LITE(0x800, kernel_fp_unavailable_exception) #endif /* __HEAD_BOOKE_H__ */ diff --git a/arch/ppc/kernel/idle.c b/arch/ppc/kernel/idle.c index 11e5b44713f7..3c4e4cb61074 100644 --- a/arch/ppc/kernel/idle.c +++ b/arch/ppc/kernel/idle.c @@ -53,10 +53,6 @@ void default_idle(void) } #endif } - if (need_resched()) - schedule(); - if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING) - cpu_die(); } /* @@ -64,11 +60,22 @@ void default_idle(void) */ void cpu_idle(void) { - for (;;) - if (ppc_md.idle != NULL) - ppc_md.idle(); - else - default_idle(); + int cpu = smp_processor_id(); + + for (;;) { + while (need_resched()) { + if (ppc_md.idle != NULL) + ppc_md.idle(); + else + default_idle(); + } + + if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING) + cpu_die(); + preempt_enable_no_resched(); + schedule(); + preempt_disable(); + } } #if defined(CONFIG_SYSCTL) && defined(CONFIG_6xx) diff --git a/arch/ppc/kernel/ppc_ksyms.c b/arch/ppc/kernel/ppc_ksyms.c index c4d5b5988430..6550de73a855 100644 --- a/arch/ppc/kernel/ppc_ksyms.c +++ b/arch/ppc/kernel/ppc_ksyms.c @@ -46,6 +46,7 @@ #include <asm/btext.h> #include <asm/div64.h> #include <asm/xmon.h> +#include <asm/signal.h> #ifdef CONFIG_8xx #include <asm/commproc.h> @@ -57,7 +58,6 @@ extern void machine_check_exception(struct pt_regs *regs); extern void alignment_exception(struct pt_regs *regs); extern void program_check_exception(struct pt_regs *regs); extern void single_step_exception(struct pt_regs *regs); -extern int do_signal(sigset_t *, struct pt_regs *); extern int pmac_newworld; extern int sys_sigreturn(struct pt_regs *regs); diff --git a/arch/ppc/kernel/smp.c b/arch/ppc/kernel/smp.c index bc5bf1124836..43b8fc2ca591 100644 --- a/arch/ppc/kernel/smp.c +++ b/arch/ppc/kernel/smp.c @@ -341,6 +341,7 @@ int __devinit start_secondary(void *unused) cpu = smp_processor_id(); smp_store_cpu_info(cpu); set_dec(tb_ticks_per_jiffy); + preempt_disable(); cpu_callin_map[cpu] = 1; printk("CPU %d done callin...\n", cpu); diff --git a/arch/ppc/platforms/83xx/mpc834x_sys.c b/arch/ppc/platforms/83xx/mpc834x_sys.c index 79b3f533d0a3..98edc75f4105 100644 --- a/arch/ppc/platforms/83xx/mpc834x_sys.c +++ b/arch/ppc/platforms/83xx/mpc834x_sys.c @@ -51,6 +51,9 @@ #include <syslib/ppc83xx_setup.h> +static const char *GFAR_PHY_0 = "phy0:0"; +static const char *GFAR_PHY_1 = "phy0:1"; + #ifndef CONFIG_PCI unsigned long isa_io_base = 0; unsigned long isa_mem_base = 0; @@ -97,6 +100,7 @@ mpc834x_sys_setup_arch(void) bd_t *binfo = (bd_t *) __res; unsigned int freq; struct gianfar_platform_data *pdata; + struct gianfar_mdio_data *mdata; /* get the core frequency */ freq = binfo->bi_intfreq; @@ -111,24 +115,27 @@ mpc834x_sys_setup_arch(void) #endif mpc83xx_early_serial_map(); + /* setup the board related info for the MDIO bus */ + mdata = (struct gianfar_mdio_data *) ppc_sys_get_pdata(MPC83xx_MDIO); + + mdata->irq[0] = MPC83xx_IRQ_EXT1; + mdata->irq[1] = MPC83xx_IRQ_EXT2; + mdata->irq[2] = -1; + mdata->irq[31] = -1; + mdata->paddr += binfo->bi_immr_base; + /* setup the board related information for the enet controllers */ pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC83xx_TSEC1); if (pdata) { pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR; - pdata->interruptPHY = MPC83xx_IRQ_EXT1; - pdata->phyid = 0; - /* fixup phy address */ - pdata->phy_reg_addr += binfo->bi_immr_base; + pdata->bus_id = GFAR_PHY_0; memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6); } pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC83xx_TSEC2); if (pdata) { pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR; - pdata->interruptPHY = MPC83xx_IRQ_EXT2; - pdata->phyid = 1; - /* fixup phy address */ - pdata->phy_reg_addr += binfo->bi_immr_base; + pdata->bus_id = GFAR_PHY_1; memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6); } diff --git a/arch/ppc/platforms/85xx/stx_gp3.h b/arch/ppc/platforms/85xx/stx_gp3.h index 95fdf4b0680b..7bcc6c35a417 100644 --- a/arch/ppc/platforms/85xx/stx_gp3.h +++ b/arch/ppc/platforms/85xx/stx_gp3.h @@ -21,6 +21,7 @@ #include <linux/config.h> #include <linux/init.h> +#include <linux/seq_file.h> #include <asm/ppcboot.h> #define BOARD_CCSRBAR ((uint)0xe0000000) diff --git a/arch/ppc/syslib/Makefile b/arch/ppc/syslib/Makefile index 5bd33baac243..5b7f2b80e56e 100644 --- a/arch/ppc/syslib/Makefile +++ b/arch/ppc/syslib/Makefile @@ -33,7 +33,6 @@ obj-$(CONFIG_PPC4xx_DMA) += ppc4xx_dma.o obj-$(CONFIG_PPC4xx_EDMA) += ppc4xx_sgdma.o ifeq ($(CONFIG_40x),y) obj-$(CONFIG_PCI) += pci_auto.o ppc405_pci.o -obj-$(CONFIG_RAPIDIO) += ppc85xx_rio.o endif endif obj-$(CONFIG_8xx) += m8xx_setup.o ppc8xx_pic.o $(wdt-mpc8xx-y) \ @@ -96,6 +95,7 @@ obj-$(CONFIG_85xx) += open_pic.o ppc85xx_common.o ppc85xx_setup.o \ ifeq ($(CONFIG_85xx),y) obj-$(CONFIG_PCI) += pci_auto.o endif +obj-$(CONFIG_RAPIDIO) += ppc85xx_rio.o obj-$(CONFIG_83xx) += ipic.o ppc83xx_setup.o ppc_sys.o \ mpc83xx_sys.o mpc83xx_devices.o ifeq ($(CONFIG_83xx),y) diff --git a/arch/ppc/syslib/mpc83xx_devices.c b/arch/ppc/syslib/mpc83xx_devices.c index dbf8acac507f..f43fbf9a9389 100644 --- a/arch/ppc/syslib/mpc83xx_devices.c +++ b/arch/ppc/syslib/mpc83xx_devices.c @@ -27,18 +27,20 @@ * what IMMRBAR is, will get fixed up by mach_mpc83xx_fixup */ +struct gianfar_mdio_data mpc83xx_mdio_pdata = { + .paddr = 0x24520, +}; + static struct gianfar_platform_data mpc83xx_tsec1_pdata = { .device_flags = FSL_GIANFAR_DEV_HAS_GIGABIT | FSL_GIANFAR_DEV_HAS_COALESCE | FSL_GIANFAR_DEV_HAS_RMON | FSL_GIANFAR_DEV_HAS_MULTI_INTR, - .phy_reg_addr = 0x24000, }; static struct gianfar_platform_data mpc83xx_tsec2_pdata = { .device_flags = FSL_GIANFAR_DEV_HAS_GIGABIT | FSL_GIANFAR_DEV_HAS_COALESCE | FSL_GIANFAR_DEV_HAS_RMON | FSL_GIANFAR_DEV_HAS_MULTI_INTR, - .phy_reg_addr = 0x24000, }; static struct fsl_i2c_platform_data mpc83xx_fsl_i2c1_pdata = { @@ -220,6 +222,12 @@ struct platform_device ppc_sys_platform_devices[] = { }, }, }, + [MPC83xx_MDIO] = { + .name = "fsl-gianfar_mdio", + .id = 0, + .dev.platform_data = &mpc83xx_mdio_pdata, + .num_resources = 0, + }, }; static int __init mach_mpc83xx_fixup(struct platform_device *pdev) diff --git a/arch/ppc/syslib/mpc83xx_sys.c b/arch/ppc/syslib/mpc83xx_sys.c index 29aa63350025..da743446789b 100644 --- a/arch/ppc/syslib/mpc83xx_sys.c +++ b/arch/ppc/syslib/mpc83xx_sys.c @@ -24,72 +24,72 @@ struct ppc_sys_spec ppc_sys_specs[] = { .ppc_sys_name = "8349E", .mask = 0xFFFF0000, .value = 0x80500000, - .num_devices = 8, + .num_devices = 9, .device_list = (enum ppc_sys_devices[]) { MPC83xx_TSEC1, MPC83xx_TSEC2, MPC83xx_IIC1, MPC83xx_IIC2, MPC83xx_DUART, MPC83xx_SEC2, - MPC83xx_USB2_DR, MPC83xx_USB2_MPH + MPC83xx_USB2_DR, MPC83xx_USB2_MPH, MPC83xx_MDIO }, }, { .ppc_sys_name = "8349", .mask = 0xFFFF0000, .value = 0x80510000, - .num_devices = 7, + .num_devices = 8, .device_list = (enum ppc_sys_devices[]) { MPC83xx_TSEC1, MPC83xx_TSEC2, MPC83xx_IIC1, MPC83xx_IIC2, MPC83xx_DUART, - MPC83xx_USB2_DR, MPC83xx_USB2_MPH + MPC83xx_USB2_DR, MPC83xx_USB2_MPH, MPC83xx_MDIO }, }, { .ppc_sys_name = "8347E", .mask = 0xFFFF0000, .value = 0x80520000, - .num_devices = 8, + .num_devices = 9, .device_list = (enum ppc_sys_devices[]) { MPC83xx_TSEC1, MPC83xx_TSEC2, MPC83xx_IIC1, MPC83xx_IIC2, MPC83xx_DUART, MPC83xx_SEC2, - MPC83xx_USB2_DR, MPC83xx_USB2_MPH + MPC83xx_USB2_DR, MPC83xx_USB2_MPH, MPC83xx_MDIO }, }, { .ppc_sys_name = "8347", .mask = 0xFFFF0000, .value = 0x80530000, - .num_devices = 7, + .num_devices = 8, .device_list = (enum ppc_sys_devices[]) { MPC83xx_TSEC1, MPC83xx_TSEC2, MPC83xx_IIC1, MPC83xx_IIC2, MPC83xx_DUART, - MPC83xx_USB2_DR, MPC83xx_USB2_MPH + MPC83xx_USB2_DR, MPC83xx_USB2_MPH, MPC83xx_MDIO }, }, { .ppc_sys_name = "8343E", .mask = 0xFFFF0000, .value = 0x80540000, - .num_devices = 7, + .num_devices = 8, .device_list = (enum ppc_sys_devices[]) { MPC83xx_TSEC1, MPC83xx_TSEC2, MPC83xx_IIC1, MPC83xx_IIC2, MPC83xx_DUART, MPC83xx_SEC2, - MPC83xx_USB2_DR, + MPC83xx_USB2_DR, MPC83xx_MDIO }, }, { .ppc_sys_name = "8343", .mask = 0xFFFF0000, .value = 0x80550000, - .num_devices = 6, + .num_devices = 7, .device_list = (enum ppc_sys_devices[]) { MPC83xx_TSEC1, MPC83xx_TSEC2, MPC83xx_IIC1, MPC83xx_IIC2, MPC83xx_DUART, - MPC83xx_USB2_DR, + MPC83xx_USB2_DR, MPC83xx_MDIO }, }, { /* default match */ diff --git a/arch/ppc/syslib/prom.c b/arch/ppc/syslib/prom.c index 03b1fc9b9501..af4deace49e0 100644 --- a/arch/ppc/syslib/prom.c +++ b/arch/ppc/syslib/prom.c @@ -13,7 +13,6 @@ #include <linux/kernel.h> #include <linux/string.h> #include <linux/init.h> -#include <linux/version.h> #include <linux/threads.h> #include <linux/spinlock.h> #include <linux/ioport.h> diff --git a/arch/ppc/syslib/prom_init.c b/arch/ppc/syslib/prom_init.c index 7f15136830f4..df14422ae1c6 100644 --- a/arch/ppc/syslib/prom_init.c +++ b/arch/ppc/syslib/prom_init.c @@ -9,7 +9,6 @@ #include <linux/kernel.h> #include <linux/string.h> #include <linux/init.h> -#include <linux/version.h> #include <linux/threads.h> #include <linux/spinlock.h> #include <linux/ioport.h> diff --git a/arch/ppc64/boot/addRamDisk.c b/arch/ppc64/boot/addRamDisk.c index 7f2c09473394..c02a99952be7 100644 --- a/arch/ppc64/boot/addRamDisk.c +++ b/arch/ppc64/boot/addRamDisk.c @@ -5,11 +5,59 @@ #include <sys/types.h> #include <sys/stat.h> #include <string.h> +#include <elf.h> #define ElfHeaderSize (64 * 1024) #define ElfPages (ElfHeaderSize / 4096) #define KERNELBASE (0xc000000000000000) +#define _ALIGN_UP(addr,size) (((addr)+((size)-1))&(~((size)-1))) +struct addr_range { + unsigned long long addr; + unsigned long memsize; + unsigned long offset; +}; + +static int check_elf64(void *p, int size, struct addr_range *r) +{ + Elf64_Ehdr *elf64 = p; + Elf64_Phdr *elf64ph; + + if (elf64->e_ident[EI_MAG0] != ELFMAG0 || + elf64->e_ident[EI_MAG1] != ELFMAG1 || + elf64->e_ident[EI_MAG2] != ELFMAG2 || + elf64->e_ident[EI_MAG3] != ELFMAG3 || + elf64->e_ident[EI_CLASS] != ELFCLASS64 || + elf64->e_ident[EI_DATA] != ELFDATA2MSB || + elf64->e_type != ET_EXEC || elf64->e_machine != EM_PPC64) + return 0; + + if ((elf64->e_phoff + sizeof(Elf64_Phdr)) > size) + return 0; + + elf64ph = (Elf64_Phdr *) ((unsigned long)elf64 + + (unsigned long)elf64->e_phoff); + + r->memsize = (unsigned long)elf64ph->p_memsz; + r->offset = (unsigned long)elf64ph->p_offset; + r->addr = (unsigned long long)elf64ph->p_vaddr; + +#ifdef DEBUG + printf("PPC64 ELF file, ph:\n"); + printf("p_type 0x%08x\n", elf64ph->p_type); + printf("p_flags 0x%08x\n", elf64ph->p_flags); + printf("p_offset 0x%016llx\n", elf64ph->p_offset); + printf("p_vaddr 0x%016llx\n", elf64ph->p_vaddr); + printf("p_paddr 0x%016llx\n", elf64ph->p_paddr); + printf("p_filesz 0x%016llx\n", elf64ph->p_filesz); + printf("p_memsz 0x%016llx\n", elf64ph->p_memsz); + printf("p_align 0x%016llx\n", elf64ph->p_align); + printf("... skipping 0x%08lx bytes of ELF header\n", + (unsigned long)elf64ph->p_offset); +#endif + + return 64; +} void get4k(FILE *file, char *buf ) { unsigned j; @@ -34,97 +82,92 @@ void death(const char *msg, FILE *fdesc, const char *fname) int main(int argc, char **argv) { char inbuf[4096]; - FILE *ramDisk = NULL; - FILE *sysmap = NULL; - FILE *inputVmlinux = NULL; - FILE *outputVmlinux = NULL; - - unsigned i = 0; - unsigned long ramFileLen = 0; - unsigned long ramLen = 0; - unsigned long roundR = 0; - - unsigned long sysmapFileLen = 0; - unsigned long sysmapLen = 0; - unsigned long sysmapPages = 0; - char* ptr_end = NULL; - unsigned long offset_end = 0; - - unsigned long kernelLen = 0; - unsigned long actualKernelLen = 0; - unsigned long round = 0; - unsigned long roundedKernelLen = 0; - unsigned long ramStartOffs = 0; - unsigned long ramPages = 0; - unsigned long roundedKernelPages = 0; - unsigned long hvReleaseData = 0; + struct addr_range vmlinux; + FILE *ramDisk; + FILE *inputVmlinux; + FILE *outputVmlinux; + + char *rd_name, *lx_name, *out_name; + + size_t i; + unsigned long ramFileLen; + unsigned long ramLen; + unsigned long roundR; + unsigned long offset_end; + + unsigned long kernelLen; + unsigned long actualKernelLen; + unsigned long round; + unsigned long roundedKernelLen; + unsigned long ramStartOffs; + unsigned long ramPages; + unsigned long roundedKernelPages; + unsigned long hvReleaseData; u_int32_t eyeCatcher = 0xc8a5d9c4; - unsigned long naca = 0; - unsigned long xRamDisk = 0; - unsigned long xRamDiskSize = 0; - long padPages = 0; + unsigned long naca; + unsigned long xRamDisk; + unsigned long xRamDiskSize; + long padPages; if (argc < 2) { fprintf(stderr, "Name of RAM disk file missing.\n"); exit(1); } + rd_name = argv[1]; if (argc < 3) { - fprintf(stderr, "Name of System Map input file is missing.\n"); - exit(1); - } - - if (argc < 4) { fprintf(stderr, "Name of vmlinux file missing.\n"); exit(1); } + lx_name = argv[2]; - if (argc < 5) { + if (argc < 4) { fprintf(stderr, "Name of vmlinux output file missing.\n"); exit(1); } + out_name = argv[3]; - ramDisk = fopen(argv[1], "r"); + ramDisk = fopen(rd_name, "r"); if ( ! ramDisk ) { - fprintf(stderr, "RAM disk file \"%s\" failed to open.\n", argv[1]); + fprintf(stderr, "RAM disk file \"%s\" failed to open.\n", rd_name); exit(1); } - sysmap = fopen(argv[2], "r"); - if ( ! sysmap ) { - fprintf(stderr, "System Map file \"%s\" failed to open.\n", argv[2]); - exit(1); - } - - inputVmlinux = fopen(argv[3], "r"); + inputVmlinux = fopen(lx_name, "r"); if ( ! inputVmlinux ) { - fprintf(stderr, "vmlinux file \"%s\" failed to open.\n", argv[3]); + fprintf(stderr, "vmlinux file \"%s\" failed to open.\n", lx_name); exit(1); } - outputVmlinux = fopen(argv[4], "w+"); + outputVmlinux = fopen(out_name, "w+"); if ( ! outputVmlinux ) { - fprintf(stderr, "output vmlinux file \"%s\" failed to open.\n", argv[4]); + fprintf(stderr, "output vmlinux file \"%s\" failed to open.\n", out_name); exit(1); } - - - + + i = fread(inbuf, 1, sizeof(inbuf), inputVmlinux); + if (i != sizeof(inbuf)) { + fprintf(stderr, "can not read vmlinux file %s: %u\n", lx_name, i); + exit(1); + } + + i = check_elf64(inbuf, sizeof(inbuf), &vmlinux); + if (i == 0) { + fprintf(stderr, "You must have a linux kernel specified as argv[2]\n"); + exit(1); + } + /* Input Vmlinux file */ fseek(inputVmlinux, 0, SEEK_END); kernelLen = ftell(inputVmlinux); fseek(inputVmlinux, 0, SEEK_SET); - printf("kernel file size = %d\n", kernelLen); - if ( kernelLen == 0 ) { - fprintf(stderr, "You must have a linux kernel specified as argv[3]\n"); - exit(1); - } + printf("kernel file size = %lu\n", kernelLen); actualKernelLen = kernelLen - ElfHeaderSize; - printf("actual kernel length (minus ELF header) = %d\n", actualKernelLen); + printf("actual kernel length (minus ELF header) = %lu\n", actualKernelLen); round = actualKernelLen % 4096; roundedKernelLen = actualKernelLen; @@ -134,39 +177,7 @@ int main(int argc, char **argv) roundedKernelPages = roundedKernelLen / 4096; printf("Vmlinux pages to copy = %ld/0x%lx \n", roundedKernelPages, roundedKernelPages); - - - /* Input System Map file */ - /* (needs to be processed simply to determine if we need to add pad pages due to the static variables not being included in the vmlinux) */ - fseek(sysmap, 0, SEEK_END); - sysmapFileLen = ftell(sysmap); - fseek(sysmap, 0, SEEK_SET); - printf("%s file size = %ld/0x%lx \n", argv[2], sysmapFileLen, sysmapFileLen); - - sysmapLen = sysmapFileLen; - - roundR = 4096 - (sysmapLen % 4096); - if (roundR) { - printf("Rounding System Map file up to a multiple of 4096, adding %ld/0x%lx \n", roundR, roundR); - sysmapLen += roundR; - } - printf("Rounded System Map size is %ld/0x%lx \n", sysmapLen, sysmapLen); - - /* Process the Sysmap file to determine where _end is */ - sysmapPages = sysmapLen / 4096; - /* read the whole file line by line, expect that it doesn't fail */ - while ( fgets(inbuf, 4096, sysmap) ) ; - /* search for _end in the last page of the system map */ - ptr_end = strstr(inbuf, " _end"); - if (!ptr_end) { - fprintf(stderr, "Unable to find _end in the sysmap file \n"); - fprintf(stderr, "inbuf: \n"); - fprintf(stderr, "%s \n", inbuf); - exit(1); - } - printf("Found _end in the last page of the sysmap - backing up 10 characters it looks like %s", ptr_end-10); - /* convert address of _end in system map to hex offset. */ - offset_end = (unsigned int)strtol(ptr_end-10, NULL, 16); + offset_end = _ALIGN_UP(vmlinux.memsize, 4096); /* calc how many pages we need to insert between the vmlinux and the start of the ram disk */ padPages = offset_end/4096 - roundedKernelPages; @@ -194,7 +205,7 @@ int main(int argc, char **argv) fseek(ramDisk, 0, SEEK_END); ramFileLen = ftell(ramDisk); fseek(ramDisk, 0, SEEK_SET); - printf("%s file size = %ld/0x%lx \n", argv[1], ramFileLen, ramFileLen); + printf("%s file size = %ld/0x%lx \n", rd_name, ramFileLen, ramFileLen); ramLen = ramFileLen; @@ -248,19 +259,19 @@ int main(int argc, char **argv) /* fseek to the hvReleaseData pointer */ fseek(outputVmlinux, ElfHeaderSize + 0x24, SEEK_SET); if (fread(&hvReleaseData, 4, 1, outputVmlinux) != 1) { - death("Could not read hvReleaseData pointer\n", outputVmlinux, argv[4]); + death("Could not read hvReleaseData pointer\n", outputVmlinux, out_name); } hvReleaseData = ntohl(hvReleaseData); /* Convert to native int */ - printf("hvReleaseData is at %08x\n", hvReleaseData); + printf("hvReleaseData is at %08lx\n", hvReleaseData); /* fseek to the hvReleaseData */ fseek(outputVmlinux, ElfHeaderSize + hvReleaseData, SEEK_SET); if (fread(inbuf, 0x40, 1, outputVmlinux) != 1) { - death("Could not read hvReleaseData\n", outputVmlinux, argv[4]); + death("Could not read hvReleaseData\n", outputVmlinux, out_name); } /* Check hvReleaseData sanity */ if (memcmp(inbuf, &eyeCatcher, 4) != 0) { - death("hvReleaseData is invalid\n", outputVmlinux, argv[4]); + death("hvReleaseData is invalid\n", outputVmlinux, out_name); } /* Get the naca pointer */ naca = ntohl(*((u_int32_t*) &inbuf[0x0C])) - KERNELBASE; @@ -269,13 +280,13 @@ int main(int argc, char **argv) /* fseek to the naca */ fseek(outputVmlinux, ElfHeaderSize + naca, SEEK_SET); if (fread(inbuf, 0x18, 1, outputVmlinux) != 1) { - death("Could not read naca\n", outputVmlinux, argv[4]); + death("Could not read naca\n", outputVmlinux, out_name); } xRamDisk = ntohl(*((u_int32_t *) &inbuf[0x0c])); xRamDiskSize = ntohl(*((u_int32_t *) &inbuf[0x14])); /* Make sure a RAM disk isn't already present */ if ((xRamDisk != 0) || (xRamDiskSize != 0)) { - death("RAM disk is already attached to this kernel\n", outputVmlinux, argv[4]); + death("RAM disk is already attached to this kernel\n", outputVmlinux, out_name); } /* Fill in the values */ *((u_int32_t *) &inbuf[0x0c]) = htonl(ramStartOffs); @@ -285,15 +296,15 @@ int main(int argc, char **argv) fflush(outputVmlinux); fseek(outputVmlinux, ElfHeaderSize + naca, SEEK_SET); if (fwrite(inbuf, 0x18, 1, outputVmlinux) != 1) { - death("Could not write naca\n", outputVmlinux, argv[4]); + death("Could not write naca\n", outputVmlinux, out_name); } - printf("Ram Disk of 0x%lx pages is attached to the kernel at offset 0x%08x\n", + printf("Ram Disk of 0x%lx pages is attached to the kernel at offset 0x%08lx\n", ramPages, ramStartOffs); /* Done */ fclose(outputVmlinux); /* Set permission to executable */ - chmod(argv[4], S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH); + chmod(out_name, S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH); return 0; } diff --git a/arch/ppc64/kernel/Makefile b/arch/ppc64/kernel/Makefile index 13e479846249..1f71f23cc26d 100644 --- a/arch/ppc64/kernel/Makefile +++ b/arch/ppc64/kernel/Makefile @@ -12,11 +12,10 @@ obj-y := misc.o prom.o endif obj-y += idle.o dma.o \ - align.o pacaData.o \ - udbg.o ioctl32.o \ + align.o \ + udbg.o \ rtc.o \ - cpu_setup_power4.o \ - iommu.o sysfs.o vdso.o firmware.o + iommu.o sysfs.o vdso.o obj-y += vdso32/ vdso64/ pci-obj-$(CONFIG_PPC_MULTIPLATFORM) += pci_dn.o pci_direct_iommu.o @@ -31,7 +30,6 @@ endif obj-$(CONFIG_PPC_PSERIES) += udbg_16550.o obj-$(CONFIG_KEXEC) += machine_kexec.o -obj-$(CONFIG_EEH) += eeh.o obj-$(CONFIG_PROC_FS) += proc_ppc64.o obj-$(CONFIG_MODULES) += module.o ifneq ($(CONFIG_PPC_MERGE),y) @@ -52,8 +50,6 @@ obj-$(CONFIG_PPC_MAPLE) += udbg_16550.o obj-$(CONFIG_KPROBES) += kprobes.o -CFLAGS_ioctl32.o += -Ifs/ - ifneq ($(CONFIG_PPC_MERGE),y) ifeq ($(CONFIG_PPC_ISERIES),y) arch/ppc64/kernel/head.o: arch/powerpc/kernel/lparmap.s diff --git a/arch/ppc64/kernel/idle.c b/arch/ppc64/kernel/idle.c index 8fec27469802..715bc0e71e0f 100644 --- a/arch/ppc64/kernel/idle.c +++ b/arch/ppc64/kernel/idle.c @@ -34,15 +34,11 @@ extern void power4_idle(void); void default_idle(void) { - long oldval; unsigned int cpu = smp_processor_id(); + set_thread_flag(TIF_POLLING_NRFLAG); while (1) { - oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED); - - if (!oldval) { - set_thread_flag(TIF_POLLING_NRFLAG); - + if (!need_resched()) { while (!need_resched() && !cpu_is_offline(cpu)) { ppc64_runlatch_off(); @@ -55,13 +51,12 @@ void default_idle(void) } HMT_medium(); - clear_thread_flag(TIF_POLLING_NRFLAG); - } else { - set_need_resched(); } ppc64_runlatch_on(); + preempt_enable_no_resched(); schedule(); + preempt_disable(); if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING) cpu_die(); } @@ -77,7 +72,9 @@ void native_idle(void) if (need_resched()) { ppc64_runlatch_on(); + preempt_enable_no_resched(); schedule(); + preempt_disable(); } if (cpu_is_offline(smp_processor_id()) && diff --git a/arch/ppc64/kernel/pci_dn.c b/arch/ppc64/kernel/pci_dn.c index 1a443a7ada4c..12c4c9e9bbc7 100644 --- a/arch/ppc64/kernel/pci_dn.c +++ b/arch/ppc64/kernel/pci_dn.c @@ -43,7 +43,7 @@ static void * __devinit update_dn_pci_info(struct device_node *dn, void *data) u32 *regs; struct pci_dn *pdn; - if (phb->is_dynamic) + if (mem_init_done) pdn = kmalloc(sizeof(*pdn), GFP_KERNEL); else pdn = alloc_bootmem(sizeof(*pdn)); @@ -120,6 +120,14 @@ void *traverse_pci_devices(struct device_node *start, traverse_func pre, return NULL; } +/** + * pci_devs_phb_init_dynamic - setup pci devices under this PHB + * phb: pci-to-host bridge (top-level bridge connecting to cpu) + * + * This routine is called both during boot, (before the memory + * subsystem is set up, before kmalloc is valid) and during the + * dynamic lpar operation of adding a PHB to a running system. + */ void __devinit pci_devs_phb_init_dynamic(struct pci_controller *phb) { struct device_node * dn = (struct device_node *) phb->arch_data; @@ -201,9 +209,14 @@ static struct notifier_block pci_dn_reconfig_nb = { .notifier_call = pci_dn_reconfig_notifier, }; -/* - * Actually initialize the phbs. - * The buswalk on this phb has not happened yet. +/** + * pci_devs_phb_init - Initialize phbs and pci devs under them. + * + * This routine walks over all phb's (pci-host bridges) on the + * system, and sets up assorted pci-related structures + * (including pci info in the device node structs) for each + * pci device found underneath. This routine runs once, + * early in the boot sequence. */ void __init pci_devs_phb_init(void) { diff --git a/arch/ppc64/kernel/rtas_pci.c b/arch/ppc64/kernel/rtas_pci.c index 3c3f19192fcc..0e5a8e116653 100644 --- a/arch/ppc64/kernel/rtas_pci.c +++ b/arch/ppc64/kernel/rtas_pci.c @@ -5,19 +5,19 @@ * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM * * RTAS specific routines for PCI. - * + * * Based on code from pci.c, chrp_pci.c and pSeries_pci.c * * 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. - * + * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * + * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA @@ -47,7 +47,7 @@ static int write_pci_config; static int ibm_read_pci_config; static int ibm_write_pci_config; -static int config_access_valid(struct pci_dn *dn, int where) +static inline int config_access_valid(struct pci_dn *dn, int where) { if (where < 256) return 1; @@ -72,16 +72,14 @@ static int of_device_available(struct device_node * dn) return 0; } -static int rtas_read_config(struct device_node *dn, int where, int size, u32 *val) +static int rtas_read_config(struct pci_dn *pdn, int where, int size, u32 *val) { int returnval = -1; unsigned long buid, addr; int ret; - struct pci_dn *pdn; - if (!dn || !dn->data) + if (!pdn) return PCIBIOS_DEVICE_NOT_FOUND; - pdn = dn->data; if (!config_access_valid(pdn, where)) return PCIBIOS_BAD_REGISTER_NUMBER; @@ -90,7 +88,7 @@ static int rtas_read_config(struct device_node *dn, int where, int size, u32 *va buid = pdn->phb->buid; if (buid) { ret = rtas_call(ibm_read_pci_config, 4, 2, &returnval, - addr, buid >> 32, buid & 0xffffffff, size); + addr, BUID_HI(buid), BUID_LO(buid), size); } else { ret = rtas_call(read_pci_config, 2, 2, &returnval, addr, size); } @@ -100,7 +98,7 @@ static int rtas_read_config(struct device_node *dn, int where, int size, u32 *va return PCIBIOS_DEVICE_NOT_FOUND; if (returnval == EEH_IO_ERROR_VALUE(size) && - eeh_dn_check_failure (dn, NULL)) + eeh_dn_check_failure (pdn->node, NULL)) return PCIBIOS_DEVICE_NOT_FOUND; return PCIBIOS_SUCCESSFUL; @@ -118,23 +116,23 @@ static int rtas_pci_read_config(struct pci_bus *bus, busdn = bus->sysdata; /* must be a phb */ /* Search only direct children of the bus */ - for (dn = busdn->child; dn; dn = dn->sibling) - if (dn->data && PCI_DN(dn)->devfn == devfn + for (dn = busdn->child; dn; dn = dn->sibling) { + struct pci_dn *pdn = PCI_DN(dn); + if (pdn && pdn->devfn == devfn && of_device_available(dn)) - return rtas_read_config(dn, where, size, val); + return rtas_read_config(pdn, where, size, val); + } return PCIBIOS_DEVICE_NOT_FOUND; } -int rtas_write_config(struct device_node *dn, int where, int size, u32 val) +int rtas_write_config(struct pci_dn *pdn, int where, int size, u32 val) { unsigned long buid, addr; int ret; - struct pci_dn *pdn; - if (!dn || !dn->data) + if (!pdn) return PCIBIOS_DEVICE_NOT_FOUND; - pdn = dn->data; if (!config_access_valid(pdn, where)) return PCIBIOS_BAD_REGISTER_NUMBER; @@ -142,7 +140,8 @@ int rtas_write_config(struct device_node *dn, int where, int size, u32 val) (pdn->devfn << 8) | (where & 0xff); buid = pdn->phb->buid; if (buid) { - ret = rtas_call(ibm_write_pci_config, 5, 1, NULL, addr, buid >> 32, buid & 0xffffffff, size, (ulong) val); + ret = rtas_call(ibm_write_pci_config, 5, 1, NULL, addr, + BUID_HI(buid), BUID_LO(buid), size, (ulong) val); } else { ret = rtas_call(write_pci_config, 3, 1, NULL, addr, size, (ulong)val); } @@ -165,10 +164,12 @@ static int rtas_pci_write_config(struct pci_bus *bus, busdn = bus->sysdata; /* must be a phb */ /* Search only direct children of the bus */ - for (dn = busdn->child; dn; dn = dn->sibling) - if (dn->data && PCI_DN(dn)->devfn == devfn + for (dn = busdn->child; dn; dn = dn->sibling) { + struct pci_dn *pdn = PCI_DN(dn); + if (pdn && pdn->devfn == devfn && of_device_available(dn)) - return rtas_write_config(dn, where, size, val); + return rtas_write_config(pdn, where, size, val); + } return PCIBIOS_DEVICE_NOT_FOUND; } @@ -221,7 +222,7 @@ static void python_countermeasures(struct device_node *dev, /* Python's register file is 1 MB in size. */ chip_regs = ioremap(reg_struct.address & ~(0xfffffUL), 0x100000); - /* + /* * Firmware doesn't always clear this bit which is critical * for good performance - Anton */ @@ -292,7 +293,7 @@ static int phb_set_bus_ranges(struct device_node *dev, if (bus_range == NULL || len < 2 * sizeof(int)) { return 1; } - + phb->first_busno = bus_range[0]; phb->last_busno = bus_range[1]; diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c index c9f2f60cfa58..dee6ab54984d 100644 --- a/arch/s390/appldata/appldata_base.c +++ b/arch/s390/appldata/appldata_base.c @@ -592,12 +592,15 @@ int appldata_register_ops(struct appldata_ops *ops) */ void appldata_unregister_ops(struct appldata_ops *ops) { + void *table; spin_lock(&appldata_ops_lock); - unregister_sysctl_table(ops->sysctl_header); list_del(&ops->list); - kfree(ops->ctl_table); + /* at that point any incoming access will fail */ + table = ops->ctl_table; ops->ctl_table = NULL; spin_unlock(&appldata_ops_lock); + unregister_sysctl_table(ops->sysctl_header); + kfree(table); P_INFO("%s-ops unregistered!\n", ops->name); } /********************** module-ops management <END> **************************/ diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c index bc59282da762..896d39d0e4ce 100644 --- a/arch/s390/kernel/debug.c +++ b/arch/s390/kernel/debug.c @@ -486,7 +486,7 @@ out: * - goto next entry in p_info */ -extern inline int +static inline int debug_next_entry(file_private_info_t *p_info) { debug_info_t *id; @@ -800,7 +800,7 @@ debug_set_level(debug_info_t* id, int new_level) * - set active entry to next in the ring buffer */ -extern inline void +static inline void proceed_active_entry(debug_info_t * id) { if ((id->active_entries[id->active_area] += id->entry_size) @@ -817,7 +817,7 @@ proceed_active_entry(debug_info_t * id) * - set active area to next in the ring buffer */ -extern inline void +static inline void proceed_active_area(debug_info_t * id) { id->active_area++; @@ -828,7 +828,7 @@ proceed_active_area(debug_info_t * id) * get_active_entry: */ -extern inline debug_entry_t* +static inline debug_entry_t* get_active_entry(debug_info_t * id) { return (debug_entry_t *) (((char *) id->areas[id->active_area] @@ -841,7 +841,7 @@ get_active_entry(debug_info_t * id) * - set timestamp, caller address, cpu number etc. */ -extern inline void +static inline void debug_finish_entry(debug_info_t * id, debug_entry_t* active, int level, int exception) { @@ -971,7 +971,7 @@ debug_entry_t * counts arguments in format string for sprintf view */ -extern inline int +static inline int debug_count_numargs(char *string) { int numargs=0; diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index 9f3dff6c0b72..78b64fe5e7c2 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -99,15 +99,15 @@ void default_idle(void) { int cpu, rc; + /* CPU is going idle. */ + cpu = smp_processor_id(); + local_irq_disable(); - if (need_resched()) { + if (need_resched()) { local_irq_enable(); - schedule(); - return; - } + return; + } - /* CPU is going idle. */ - cpu = smp_processor_id(); rc = notifier_call_chain(&idle_chain, CPU_IDLE, (void *)(long) cpu); if (rc != NOTIFY_OK && rc != NOTIFY_DONE) BUG(); @@ -120,7 +120,7 @@ void default_idle(void) __ctl_set_bit(8, 15); #ifdef CONFIG_HOTPLUG_CPU - if (cpu_is_offline(smp_processor_id())) + if (cpu_is_offline(cpu)) cpu_die(); #endif @@ -139,8 +139,14 @@ void default_idle(void) void cpu_idle(void) { - for (;;) - default_idle(); + for (;;) { + while (!need_resched()) + default_idle(); + + preempt_enable_no_resched(); + schedule(); + preempt_disable(); + } } void show_regs(struct pt_regs *regs) diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index e13c87b446b2..5856b3fda6bf 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -533,6 +533,7 @@ int __devinit start_secondary(void *cpuvoid) { /* Setup the cpu */ cpu_init(); + preempt_disable(); /* init per CPU timer */ init_cpu_timer(); #ifdef CONFIG_VIRT_TIMER diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index 64e32da77754..fb2607c369ed 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -160,7 +160,7 @@ static void do_sigsegv(struct pt_regs *regs, unsigned long error_code, * 11 Page translation -> Not present (nullification) * 3b Region third trans. -> Not present (nullification) */ -extern inline void +static inline void do_exception(struct pt_regs *regs, unsigned long error_code, int is_protection) { struct task_struct *tsk; diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c index 6dce9d0b81f8..fd4f240b833d 100644 --- a/arch/sh/kernel/process.c +++ b/arch/sh/kernel/process.c @@ -51,28 +51,24 @@ void enable_hlt(void) EXPORT_SYMBOL(enable_hlt); -void default_idle(void) +void cpu_idle(void) { /* endless idle loop with no priority at all */ while (1) { if (hlt_counter) { - while (1) - if (need_resched()) - break; + while (!need_resched()) + cpu_relax(); } else { while (!need_resched()) cpu_sleep(); } + preempt_enable_no_resched(); schedule(); + preempt_disable(); } } -void cpu_idle(void) -{ - default_idle(); -} - void machine_restart(char * __unused) { /* SR.BL=1 and invoke address error to let CPU reset (manual reset) */ diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c index 5ecefc02896a..59e49b18252c 100644 --- a/arch/sh/kernel/smp.c +++ b/arch/sh/kernel/smp.c @@ -112,7 +112,9 @@ int __cpu_up(unsigned int cpu) int start_secondary(void *unused) { - unsigned int cpu = smp_processor_id(); + unsigned int cpu; + + cpu = smp_processor_id(); atomic_inc(&init_mm.mm_count); current->active_mm = &init_mm; @@ -120,6 +122,7 @@ int start_secondary(void *unused) smp_store_cpu_info(cpu); __smp_slave_init(cpu); + preempt_disable(); per_cpu_trap_init(); atomic_inc(&cpus_booted); diff --git a/arch/sh64/kernel/process.c b/arch/sh64/kernel/process.c index efde41c0cd66..b95d04141855 100644 --- a/arch/sh64/kernel/process.c +++ b/arch/sh64/kernel/process.c @@ -307,23 +307,19 @@ __setup("hlt", hlt_setup); static inline void hlt(void) { - if (hlt_counter) - return; - __asm__ __volatile__ ("sleep" : : : "memory"); } /* * The idle loop on a uniprocessor SH.. */ -void default_idle(void) +void cpu_idle(void) { /* endless idle loop with no priority at all */ while (1) { if (hlt_counter) { - while (1) - if (need_resched()) - break; + while (!need_resched()) + cpu_relax(); } else { local_irq_disable(); while (!need_resched()) { @@ -334,13 +330,11 @@ void default_idle(void) } local_irq_enable(); } + preempt_enable_no_resched(); schedule(); + preempt_disable(); } -} -void cpu_idle(void) -{ - default_idle(); } void machine_restart(char * __unused) diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 6537445dac0e..3cfb8be3ff6d 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -201,6 +201,14 @@ config SUN_OPENPROMFS Only choose N if you know in advance that you will not need to modify OpenPROM settings on the running system. +config SPARC_LED + tristate "Sun4m LED driver" + help + This driver toggles the front-panel LED on sun4m systems + in a user-specifyable manner. It's state can be probed + by reading /proc/led and it's blinking mode can be changed + via writes to /proc/led + source "fs/Kconfig.binfmt" config SUNOS_EMUL diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile index 3d22ba2af01c..1b83e21841b5 100644 --- a/arch/sparc/kernel/Makefile +++ b/arch/sparc/kernel/Makefile @@ -21,6 +21,7 @@ obj-$(CONFIG_SUN_AUXIO) += auxio.o obj-$(CONFIG_PCI) += ebus.o obj-$(CONFIG_SUN_PM) += apc.o pmc.o obj-$(CONFIG_MODULES) += module.o sparc_ksyms.o +obj-$(CONFIG_SPARC_LED) += led.o ifdef CONFIG_SUNOS_EMUL obj-y += sys_sunos.o sunos_ioctl.o diff --git a/arch/sparc/kernel/cpu.c b/arch/sparc/kernel/cpu.c index 6a4ebc62193e..d7bfc61d2879 100644 --- a/arch/sparc/kernel/cpu.c +++ b/arch/sparc/kernel/cpu.c @@ -75,7 +75,7 @@ struct cpu_fp_info linux_sparc_fpu[] = { { 9, 3, "Fujitsu or Weitek on-chip FPU"}, }; -#define NSPARCFPU (sizeof(linux_sparc_fpu)/sizeof(struct cpu_fp_info)) +#define NSPARCFPU ARRAY_SIZE(linux_sparc_fpu) struct cpu_iu_info linux_sparc_chips[] = { /* Sun4/100, 4/200, SLC */ @@ -120,7 +120,7 @@ struct cpu_iu_info linux_sparc_chips[] = { { 0xf, 0, "UNKNOWN CPU-VENDOR/TYPE"}, }; -#define NSPARCCHIPS (sizeof(linux_sparc_chips)/sizeof(struct cpu_iu_info)) +#define NSPARCCHIPS ARRAY_SIZE(linux_sparc_chips) char *sparc_cpu_type; char *sparc_fpu_type; diff --git a/arch/sparc/kernel/led.c b/arch/sparc/kernel/led.c new file mode 100644 index 000000000000..2a3afca453c9 --- /dev/null +++ b/arch/sparc/kernel/led.c @@ -0,0 +1,139 @@ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/proc_fs.h> +#include <linux/string.h> + +#include <asm/auxio.h> + +#define LED_MAX_LENGTH 8 /* maximum chars written to proc file */ + +static inline void led_toggle(void) +{ + unsigned char val = get_auxio(); + unsigned char on, off; + + if (val & AUXIO_LED) { + on = 0; + off = AUXIO_LED; + } else { + on = AUXIO_LED; + off = 0; + } + + set_auxio(on, off); +} + +static struct timer_list led_blink_timer; + +static void led_blink(unsigned long timeout) +{ + led_toggle(); + + /* reschedule */ + if (!timeout) { /* blink according to load */ + led_blink_timer.expires = jiffies + + ((1 + (avenrun[0] >> FSHIFT)) * HZ); + led_blink_timer.data = 0; + } else { /* blink at user specified interval */ + led_blink_timer.expires = jiffies + (timeout * HZ); + led_blink_timer.data = timeout; + } + add_timer(&led_blink_timer); +} + +static int led_read_proc(char *buf, char **start, off_t offset, int count, + int *eof, void *data) +{ + int len = 0; + + if (get_auxio() & AUXIO_LED) + len = sprintf(buf, "on\n"); + else + len = sprintf(buf, "off\n"); + + return len; +} + +static int led_write_proc(struct file *file, const char *buffer, + unsigned long count, void *data) +{ + char *buf = NULL; + + if (count > LED_MAX_LENGTH) + count = LED_MAX_LENGTH; + + buf = kmalloc(sizeof(char) * (count + 1), GFP_KERNEL); + if (!buf) + return -ENOMEM; + + if (copy_from_user(buf, buffer, count)) { + kfree(buf); + return -EFAULT; + } + + buf[count] = '\0'; + + /* work around \n when echo'ing into proc */ + if (buf[count - 1] == '\n') + buf[count - 1] = '\0'; + + /* before we change anything we want to stop any running timers, + * otherwise calls such as on will have no persistent effect + */ + del_timer_sync(&led_blink_timer); + + if (!strcmp(buf, "on")) { + auxio_set_led(AUXIO_LED_ON); + } else if (!strcmp(buf, "toggle")) { + led_toggle(); + } else if ((*buf > '0') && (*buf <= '9')) { + led_blink(simple_strtoul(buf, NULL, 10)); + } else if (!strcmp(buf, "load")) { + led_blink(0); + } else { + auxio_set_led(AUXIO_LED_OFF); + } + + kfree(buf); + + return count; +} + +static struct proc_dir_entry *led; + +#define LED_VERSION "0.1" + +static int __init led_init(void) +{ + init_timer(&led_blink_timer); + led_blink_timer.function = led_blink; + + led = create_proc_entry("led", 0, NULL); + if (!led) + return -ENOMEM; + + led->read_proc = led_read_proc; /* reader function */ + led->write_proc = led_write_proc; /* writer function */ + led->owner = THIS_MODULE; + + printk(KERN_INFO + "led: version %s, Lars Kotthoff <metalhead@metalhead.ws>\n", + LED_VERSION); + + return 0; +} + +static void __exit led_exit(void) +{ + remove_proc_entry("led", NULL); + del_timer_sync(&led_blink_timer); +} + +module_init(led_init); +module_exit(led_exit); + +MODULE_AUTHOR("Lars Kotthoff <metalhead@metalhead.ws>"); +MODULE_DESCRIPTION("Provides control of the front LED on SPARC systems."); +MODULE_LICENSE("GPL"); +MODULE_VERSION(LED_VERSION); diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c index 25e31d5ec99b..cccfc12802ed 100644 --- a/arch/sparc/kernel/pcic.c +++ b/arch/sparc/kernel/pcic.c @@ -143,7 +143,7 @@ static struct pcic_ca2irq pcic_i_jk[] = { * as several PROMs may be installed on the same physical board. */ #define SN2L_INIT(name, map) \ - { name, map, sizeof(map)/sizeof(struct pcic_ca2irq) } + { name, map, ARRAY_SIZE(map) } static struct pcic_sn2list pcic_known_sysnames[] = { SN2L_INIT("SUNW,JavaEngine1", pcic_i_je1a), /* JE1, PROM 2.32 */ diff --git a/arch/sparc/kernel/process.c b/arch/sparc/kernel/process.c index 29e72b57d4fd..ea8647411462 100644 --- a/arch/sparc/kernel/process.c +++ b/arch/sparc/kernel/process.c @@ -67,13 +67,6 @@ extern void fpsave(unsigned long *, unsigned long *, void *, unsigned long *); struct task_struct *last_task_used_math = NULL; struct thread_info *current_set[NR_CPUS]; -/* - * default_idle is new in 2.5. XXX Review, currently stolen from sparc64. - */ -void default_idle(void) -{ -} - #ifndef CONFIG_SMP #define SUN4C_FAULT_HIGH 100 @@ -92,12 +85,11 @@ void cpu_idle(void) static unsigned long fps; unsigned long now; unsigned long faults; - unsigned long flags; extern unsigned long sun4c_kernel_faults; extern void sun4c_grow_kernel_ring(void); - local_irq_save(flags); + local_irq_disable(); now = jiffies; count -= (now - last_jiffies); last_jiffies = now; @@ -113,14 +105,19 @@ void cpu_idle(void) sun4c_grow_kernel_ring(); } } - local_irq_restore(flags); + local_irq_enable(); } - while((!need_resched()) && pm_idle) { - (*pm_idle)(); + if (pm_idle) { + while (!need_resched()) + (*pm_idle)(); + } else { + while (!need_resched()) + cpu_relax(); } - + preempt_enable_no_resched(); schedule(); + preempt_disable(); check_pgt_cache(); } } @@ -130,13 +127,15 @@ void cpu_idle(void) /* This is being executed in task 0 'user space'. */ void cpu_idle(void) { + set_thread_flag(TIF_POLLING_NRFLAG); /* endless idle loop with no priority at all */ while(1) { - if(need_resched()) { - schedule(); - check_pgt_cache(); - } - barrier(); /* or else gcc optimizes... */ + while (!need_resched()) + cpu_relax(); + preempt_enable_no_resched(); + schedule(); + preempt_disable(); + check_pgt_cache(); } } diff --git a/arch/sparc/kernel/sunos_ioctl.c b/arch/sparc/kernel/sunos_ioctl.c index df1c0b31a930..a6ba3d26222c 100644 --- a/arch/sparc/kernel/sunos_ioctl.c +++ b/arch/sparc/kernel/sunos_ioctl.c @@ -23,7 +23,6 @@ #include <linux/smp_lock.h> #include <linux/syscalls.h> #include <linux/file.h> -#include <asm/kbio.h> #if 0 extern char sunkbd_type; diff --git a/arch/sparc/mm/fault.c b/arch/sparc/mm/fault.c index 2bbd53f3cafb..9eeed3347df3 100644 --- a/arch/sparc/mm/fault.c +++ b/arch/sparc/mm/fault.c @@ -33,8 +33,6 @@ #include <asm/kdebug.h> #include <asm/uaccess.h> -#define ELEMENTS(arr) (sizeof (arr)/sizeof (arr[0])) - extern int prom_node_root; /* At boot time we determine these two values necessary for setting diff --git a/arch/sparc64/kernel/cpu.c b/arch/sparc64/kernel/cpu.c index 77ef5df4e5a7..00eed88ef2e8 100644 --- a/arch/sparc64/kernel/cpu.c +++ b/arch/sparc64/kernel/cpu.c @@ -43,7 +43,7 @@ struct cpu_fp_info linux_sparc_fpu[] = { { 0x3e, 0x22, 0, "UltraSparc IIIi+ integrated FPU"}, }; -#define NSPARCFPU (sizeof(linux_sparc_fpu)/sizeof(struct cpu_fp_info)) +#define NSPARCFPU ARRAY_SIZE(linux_sparc_fpu) struct cpu_iu_info linux_sparc_chips[] = { { 0x17, 0x10, "TI UltraSparc I (SpitFire)"}, @@ -59,7 +59,7 @@ struct cpu_iu_info linux_sparc_chips[] = { { 0x3e, 0x22, "TI UltraSparc IIIi+ (Serrano)"}, }; -#define NSPARCCHIPS (sizeof(linux_sparc_chips)/sizeof(struct cpu_iu_info)) +#define NSPARCCHIPS ARRAY_SIZE(linux_sparc_chips) char *sparc_cpu_type = "cpu-oops"; char *sparc_fpu_type = "fpu-oops"; diff --git a/arch/sparc64/kernel/ioctl32.c b/arch/sparc64/kernel/ioctl32.c index e6a00325075a..e62214354bb5 100644 --- a/arch/sparc64/kernel/ioctl32.c +++ b/arch/sparc64/kernel/ioctl32.c @@ -11,33 +11,14 @@ #define INCLUDES #include "compat_ioctl.c" -#include <linux/ncp_fs.h> #include <linux/syscalls.h> #include <asm/fbio.h> -#include <asm/kbio.h> -#include <asm/vuid_event.h> -#include <asm/envctrl.h> -#include <asm/display7seg.h> -#include <asm/openpromio.h> -#include <asm/audioio.h> -#include <asm/watchdog.h> /* Use this to get at 32-bit user passed pointers. * See sys_sparc32.c for description about it. */ #define A(__x) compat_ptr(__x) -static __inline__ void *alloc_user_space(long len) -{ - struct pt_regs *regs = current_thread_info()->kregs; - unsigned long usp = regs->u_regs[UREG_I6]; - - if (!(test_thread_flag(TIF_32BIT))) - usp += STACK_BIAS; - - return (void *) (usp - len); -} - #define CODE #include "compat_ioctl.c" @@ -111,361 +92,8 @@ static int fbiogscursor(unsigned int fd, unsigned int cmd, unsigned long arg) return sys_ioctl (fd, FBIOSCURSOR, (unsigned long)p); } -#if defined(CONFIG_DRM) || defined(CONFIG_DRM_MODULE) -/* This really belongs in include/linux/drm.h -DaveM */ -#include "../../../drivers/char/drm/drm.h" - -typedef struct drm32_version { - int version_major; /* Major version */ - int version_minor; /* Minor version */ - int version_patchlevel;/* Patch level */ - int name_len; /* Length of name buffer */ - u32 name; /* Name of driver */ - int date_len; /* Length of date buffer */ - u32 date; /* User-space buffer to hold date */ - int desc_len; /* Length of desc buffer */ - u32 desc; /* User-space buffer to hold desc */ -} drm32_version_t; -#define DRM32_IOCTL_VERSION DRM_IOWR(0x00, drm32_version_t) - -static int drm32_version(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - drm32_version_t __user *uversion = (drm32_version_t __user *)arg; - drm_version_t __user *p = compat_alloc_user_space(sizeof(*p)); - compat_uptr_t addr; - int n; - int ret; - - if (clear_user(p, 3 * sizeof(int)) || - get_user(n, &uversion->name_len) || - put_user(n, &p->name_len) || - get_user(addr, &uversion->name) || - put_user(compat_ptr(addr), &p->name) || - get_user(n, &uversion->date_len) || - put_user(n, &p->date_len) || - get_user(addr, &uversion->date) || - put_user(compat_ptr(addr), &p->date) || - get_user(n, &uversion->desc_len) || - put_user(n, &p->desc_len) || - get_user(addr, &uversion->desc) || - put_user(compat_ptr(addr), &p->desc)) - return -EFAULT; - - ret = sys_ioctl(fd, DRM_IOCTL_VERSION, (unsigned long)p); - if (ret) - return ret; - - if (copy_in_user(uversion, p, 3 * sizeof(int)) || - get_user(n, &p->name_len) || - put_user(n, &uversion->name_len) || - get_user(n, &p->date_len) || - put_user(n, &uversion->date_len) || - get_user(n, &p->desc_len) || - put_user(n, &uversion->desc_len)) - return -EFAULT; - - return 0; -} - -typedef struct drm32_unique { - int unique_len; /* Length of unique */ - u32 unique; /* Unique name for driver instantiation */ -} drm32_unique_t; -#define DRM32_IOCTL_GET_UNIQUE DRM_IOWR(0x01, drm32_unique_t) -#define DRM32_IOCTL_SET_UNIQUE DRM_IOW( 0x10, drm32_unique_t) - -static int drm32_getsetunique(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - drm32_unique_t __user *uarg = (drm32_unique_t __user *)arg; - drm_unique_t __user *p = compat_alloc_user_space(sizeof(*p)); - compat_uptr_t addr; - int n; - int ret; - - if (get_user(n, &uarg->unique_len) || - put_user(n, &p->unique_len) || - get_user(addr, &uarg->unique) || - put_user(compat_ptr(addr), &p->unique)) - return -EFAULT; - - if (cmd == DRM32_IOCTL_GET_UNIQUE) - ret = sys_ioctl (fd, DRM_IOCTL_GET_UNIQUE, (unsigned long)p); - else - ret = sys_ioctl (fd, DRM_IOCTL_SET_UNIQUE, (unsigned long)p); - - if (ret) - return ret; - - if (get_user(n, &p->unique_len) || put_user(n, &uarg->unique_len)) - return -EFAULT; - - return 0; -} - -typedef struct drm32_map { - u32 offset; /* Requested physical address (0 for SAREA)*/ - u32 size; /* Requested physical size (bytes) */ - drm_map_type_t type; /* Type of memory to map */ - drm_map_flags_t flags; /* Flags */ - u32 handle; /* User-space: "Handle" to pass to mmap */ - /* Kernel-space: kernel-virtual address */ - int mtrr; /* MTRR slot used */ - /* Private data */ -} drm32_map_t; -#define DRM32_IOCTL_ADD_MAP DRM_IOWR(0x15, drm32_map_t) - -static int drm32_addmap(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - drm32_map_t __user *uarg = (drm32_map_t __user *) arg; - drm_map_t karg; - mm_segment_t old_fs; - u32 tmp; - int ret; - - ret = get_user(karg.offset, &uarg->offset); - ret |= get_user(karg.size, &uarg->size); - ret |= get_user(karg.type, &uarg->type); - ret |= get_user(karg.flags, &uarg->flags); - ret |= get_user(tmp, &uarg->handle); - ret |= get_user(karg.mtrr, &uarg->mtrr); - if (ret) - return -EFAULT; - - karg.handle = (void *) (unsigned long) tmp; - - old_fs = get_fs(); - set_fs(KERNEL_DS); - ret = sys_ioctl(fd, DRM_IOCTL_ADD_MAP, (unsigned long) &karg); - set_fs(old_fs); - - if (!ret) { - ret = put_user(karg.offset, &uarg->offset); - ret |= put_user(karg.size, &uarg->size); - ret |= put_user(karg.type, &uarg->type); - ret |= put_user(karg.flags, &uarg->flags); - tmp = (u32) (long)karg.handle; - ret |= put_user(tmp, &uarg->handle); - ret |= put_user(karg.mtrr, &uarg->mtrr); - if (ret) - ret = -EFAULT; - } - - return ret; -} - -typedef struct drm32_buf_info { - int count; /* Entries in list */ - u32 list; /* (drm_buf_desc_t *) */ -} drm32_buf_info_t; -#define DRM32_IOCTL_INFO_BUFS DRM_IOWR(0x18, drm32_buf_info_t) - -static int drm32_info_bufs(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - drm32_buf_info_t __user *uarg = (drm32_buf_info_t __user *)arg; - drm_buf_info_t __user *p = compat_alloc_user_space(sizeof(*p)); - compat_uptr_t addr; - int n; - int ret; - - if (get_user(n, &uarg->count) || put_user(n, &p->count) || - get_user(addr, &uarg->list) || put_user(compat_ptr(addr), &p->list)) - return -EFAULT; - - ret = sys_ioctl(fd, DRM_IOCTL_INFO_BUFS, (unsigned long)p); - if (ret) - return ret; - - if (get_user(n, &p->count) || put_user(n, &uarg->count)) - return -EFAULT; - - return 0; -} - -typedef struct drm32_buf_free { - int count; - u32 list; /* (int *) */ -} drm32_buf_free_t; -#define DRM32_IOCTL_FREE_BUFS DRM_IOW( 0x1a, drm32_buf_free_t) - -static int drm32_free_bufs(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - drm32_buf_free_t __user *uarg = (drm32_buf_free_t __user *)arg; - drm_buf_free_t __user *p = compat_alloc_user_space(sizeof(*p)); - compat_uptr_t addr; - int n; - - if (get_user(n, &uarg->count) || put_user(n, &p->count) || - get_user(addr, &uarg->list) || put_user(compat_ptr(addr), &p->list)) - return -EFAULT; - - return sys_ioctl(fd, DRM_IOCTL_FREE_BUFS, (unsigned long)p); -} - -typedef struct drm32_buf_pub { - int idx; /* Index into master buflist */ - int total; /* Buffer size */ - int used; /* Amount of buffer in use (for DMA) */ - u32 address; /* Address of buffer (void *) */ -} drm32_buf_pub_t; - -typedef struct drm32_buf_map { - int count; /* Length of buflist */ - u32 virtual; /* Mmaped area in user-virtual (void *) */ - u32 list; /* Buffer information (drm_buf_pub_t *) */ -} drm32_buf_map_t; -#define DRM32_IOCTL_MAP_BUFS DRM_IOWR(0x19, drm32_buf_map_t) - -static int drm32_map_bufs(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - drm32_buf_map_t __user *uarg = (drm32_buf_map_t __user *)arg; - drm32_buf_pub_t __user *ulist; - drm_buf_map_t __user *arg64; - drm_buf_pub_t __user *list; - int orig_count, ret, i; - int n; - compat_uptr_t addr; - - if (get_user(orig_count, &uarg->count)) - return -EFAULT; - - arg64 = compat_alloc_user_space(sizeof(drm_buf_map_t) + - (size_t)orig_count * sizeof(drm_buf_pub_t)); - list = (void __user *)(arg64 + 1); - - if (put_user(orig_count, &arg64->count) || - put_user(list, &arg64->list) || - get_user(addr, &uarg->virtual) || - put_user(compat_ptr(addr), &arg64->virtual) || - get_user(addr, &uarg->list)) - return -EFAULT; - - ulist = compat_ptr(addr); - - for (i = 0; i < orig_count; i++) { - if (get_user(n, &ulist[i].idx) || - put_user(n, &list[i].idx) || - get_user(n, &ulist[i].total) || - put_user(n, &list[i].total) || - get_user(n, &ulist[i].used) || - put_user(n, &list[i].used) || - get_user(addr, &ulist[i].address) || - put_user(compat_ptr(addr), &list[i].address)) - return -EFAULT; - } - - ret = sys_ioctl(fd, DRM_IOCTL_MAP_BUFS, (unsigned long) arg64); - if (ret) - return ret; - - for (i = 0; i < orig_count; i++) { - void __user *p; - if (get_user(n, &list[i].idx) || - put_user(n, &ulist[i].idx) || - get_user(n, &list[i].total) || - put_user(n, &ulist[i].total) || - get_user(n, &list[i].used) || - put_user(n, &ulist[i].used) || - get_user(p, &list[i].address) || - put_user((unsigned long)p, &ulist[i].address)) - return -EFAULT; - } - - if (get_user(n, &arg64->count) || put_user(n, &uarg->count)) - return -EFAULT; - - return 0; -} - -typedef struct drm32_dma { - /* Indices here refer to the offset into - buflist in drm_buf_get_t. */ - int context; /* Context handle */ - int send_count; /* Number of buffers to send */ - u32 send_indices; /* List of handles to buffers (int *) */ - u32 send_sizes; /* Lengths of data to send (int *) */ - drm_dma_flags_t flags; /* Flags */ - int request_count; /* Number of buffers requested */ - int request_size; /* Desired size for buffers */ - u32 request_indices; /* Buffer information (int *) */ - u32 request_sizes; /* (int *) */ - int granted_count; /* Number of buffers granted */ -} drm32_dma_t; -#define DRM32_IOCTL_DMA DRM_IOWR(0x29, drm32_dma_t) - -/* RED PEN The DRM layer blindly dereferences the send/request - * index/size arrays even though they are userland - * pointers. -DaveM - */ -static int drm32_dma(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - drm32_dma_t __user *uarg = (drm32_dma_t __user *) arg; - drm_dma_t __user *p = compat_alloc_user_space(sizeof(*p)); - compat_uptr_t addr; - int ret; - - if (copy_in_user(p, uarg, 2 * sizeof(int)) || - get_user(addr, &uarg->send_indices) || - put_user(compat_ptr(addr), &p->send_indices) || - get_user(addr, &uarg->send_sizes) || - put_user(compat_ptr(addr), &p->send_sizes) || - copy_in_user(&p->flags, &uarg->flags, sizeof(drm_dma_flags_t)) || - copy_in_user(&p->request_count, &uarg->request_count, sizeof(int))|| - copy_in_user(&p->request_size, &uarg->request_size, sizeof(int)) || - get_user(addr, &uarg->request_indices) || - put_user(compat_ptr(addr), &p->request_indices) || - get_user(addr, &uarg->request_sizes) || - put_user(compat_ptr(addr), &p->request_sizes) || - copy_in_user(&p->granted_count, &uarg->granted_count, sizeof(int))) - return -EFAULT; - - ret = sys_ioctl(fd, DRM_IOCTL_DMA, (unsigned long)p); - if (ret) - return ret; - - if (copy_in_user(uarg, p, 2 * sizeof(int)) || - copy_in_user(&uarg->flags, &p->flags, sizeof(drm_dma_flags_t)) || - copy_in_user(&uarg->request_count, &p->request_count, sizeof(int))|| - copy_in_user(&uarg->request_size, &p->request_size, sizeof(int)) || - copy_in_user(&uarg->granted_count, &p->granted_count, sizeof(int))) - return -EFAULT; - - return 0; -} - -typedef struct drm32_ctx_res { - int count; - u32 contexts; /* (drm_ctx_t *) */ -} drm32_ctx_res_t; -#define DRM32_IOCTL_RES_CTX DRM_IOWR(0x26, drm32_ctx_res_t) - -static int drm32_res_ctx(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - drm32_ctx_res_t __user *uarg = (drm32_ctx_res_t __user *) arg; - drm_ctx_res_t __user *p = compat_alloc_user_space(sizeof(*p)); - compat_uptr_t addr; - int ret; - - if (copy_in_user(p, uarg, sizeof(int)) || - get_user(addr, &uarg->contexts) || - put_user(compat_ptr(addr), &p->contexts)) - return -EFAULT; - - ret = sys_ioctl(fd, DRM_IOCTL_RES_CTX, (unsigned long)p); - if (ret) - return ret; - - if (copy_in_user(uarg, p, sizeof(int))) - return -EFAULT; - - return 0; -} - -#endif - -typedef int (* ioctl32_handler_t)(unsigned int, unsigned int, unsigned long, struct file *); - #define COMPATIBLE_IOCTL(cmd) HANDLE_IOCTL((cmd),sys_ioctl) -#define HANDLE_IOCTL(cmd,handler) { (cmd), (ioctl32_handler_t)(handler), NULL }, +#define HANDLE_IOCTL(cmd,handler) { (cmd), (ioctl_trans_handler_t)(handler), NULL }, #define IOCTL_TABLE_START \ struct ioctl_trans ioctl_start[] = { #define IOCTL_TABLE_END \ @@ -485,103 +113,12 @@ COMPATIBLE_IOCTL(FBIOSCURPOS) COMPATIBLE_IOCTL(FBIOGCURPOS) COMPATIBLE_IOCTL(FBIOGCURMAX) /* Little k */ -COMPATIBLE_IOCTL(KIOCTYPE) -COMPATIBLE_IOCTL(KIOCLAYOUT) -COMPATIBLE_IOCTL(KIOCGTRANS) -COMPATIBLE_IOCTL(KIOCTRANS) -COMPATIBLE_IOCTL(KIOCCMD) -COMPATIBLE_IOCTL(KIOCSDIRECT) -COMPATIBLE_IOCTL(KIOCSLED) -COMPATIBLE_IOCTL(KIOCGLED) -COMPATIBLE_IOCTL(KIOCSRATE) -COMPATIBLE_IOCTL(KIOCGRATE) -COMPATIBLE_IOCTL(VUIDSFORMAT) -COMPATIBLE_IOCTL(VUIDGFORMAT) /* Little v, the video4linux ioctls */ -COMPATIBLE_IOCTL(_IOR('p', 20, int[7])) /* RTCGET */ -COMPATIBLE_IOCTL(_IOW('p', 21, int[7])) /* RTCSET */ -COMPATIBLE_IOCTL(ENVCTRL_RD_WARNING_TEMPERATURE) -COMPATIBLE_IOCTL(ENVCTRL_RD_SHUTDOWN_TEMPERATURE) -COMPATIBLE_IOCTL(ENVCTRL_RD_CPU_TEMPERATURE) -COMPATIBLE_IOCTL(ENVCTRL_RD_FAN_STATUS) -COMPATIBLE_IOCTL(ENVCTRL_RD_VOLTAGE_STATUS) -COMPATIBLE_IOCTL(ENVCTRL_RD_SCSI_TEMPERATURE) -COMPATIBLE_IOCTL(ENVCTRL_RD_ETHERNET_TEMPERATURE) -COMPATIBLE_IOCTL(ENVCTRL_RD_MTHRBD_TEMPERATURE) -COMPATIBLE_IOCTL(ENVCTRL_RD_CPU_VOLTAGE) -COMPATIBLE_IOCTL(ENVCTRL_RD_GLOBALADDRESS) -/* COMPATIBLE_IOCTL(D7SIOCRD) same value as ENVCTRL_RD_VOLTAGE_STATUS */ -COMPATIBLE_IOCTL(D7SIOCWR) -COMPATIBLE_IOCTL(D7SIOCTM) -/* OPENPROMIO, SunOS/Solaris only, the NetBSD one's have - * embedded pointers in the arg which we'd need to clean up... - */ -COMPATIBLE_IOCTL(OPROMGETOPT) -COMPATIBLE_IOCTL(OPROMSETOPT) -COMPATIBLE_IOCTL(OPROMNXTOPT) -COMPATIBLE_IOCTL(OPROMSETOPT2) -COMPATIBLE_IOCTL(OPROMNEXT) -COMPATIBLE_IOCTL(OPROMCHILD) -COMPATIBLE_IOCTL(OPROMGETPROP) -COMPATIBLE_IOCTL(OPROMNXTPROP) -COMPATIBLE_IOCTL(OPROMU2P) -COMPATIBLE_IOCTL(OPROMGETCONS) -COMPATIBLE_IOCTL(OPROMGETFBNAME) -COMPATIBLE_IOCTL(OPROMGETBOOTARGS) -COMPATIBLE_IOCTL(OPROMSETCUR) -COMPATIBLE_IOCTL(OPROMPCI2NODE) -COMPATIBLE_IOCTL(OPROMPATH2NODE) -/* Big L */ -COMPATIBLE_IOCTL(LOOP_SET_STATUS64) -COMPATIBLE_IOCTL(LOOP_GET_STATUS64) -/* Big A */ -COMPATIBLE_IOCTL(AUDIO_GETINFO) -COMPATIBLE_IOCTL(AUDIO_SETINFO) -COMPATIBLE_IOCTL(AUDIO_DRAIN) -COMPATIBLE_IOCTL(AUDIO_GETDEV) -COMPATIBLE_IOCTL(AUDIO_GETDEV_SUNOS) -COMPATIBLE_IOCTL(AUDIO_FLUSH) -COMPATIBLE_IOCTL(AUTOFS_IOC_EXPIRE_MULTI) -#if defined(CONFIG_DRM) || defined(CONFIG_DRM_MODULE) -COMPATIBLE_IOCTL(DRM_IOCTL_GET_MAGIC) -COMPATIBLE_IOCTL(DRM_IOCTL_IRQ_BUSID) -COMPATIBLE_IOCTL(DRM_IOCTL_AUTH_MAGIC) -COMPATIBLE_IOCTL(DRM_IOCTL_BLOCK) -COMPATIBLE_IOCTL(DRM_IOCTL_UNBLOCK) -COMPATIBLE_IOCTL(DRM_IOCTL_CONTROL) -COMPATIBLE_IOCTL(DRM_IOCTL_ADD_BUFS) -COMPATIBLE_IOCTL(DRM_IOCTL_MARK_BUFS) -COMPATIBLE_IOCTL(DRM_IOCTL_ADD_CTX) -COMPATIBLE_IOCTL(DRM_IOCTL_RM_CTX) -COMPATIBLE_IOCTL(DRM_IOCTL_MOD_CTX) -COMPATIBLE_IOCTL(DRM_IOCTL_GET_CTX) -COMPATIBLE_IOCTL(DRM_IOCTL_SWITCH_CTX) -COMPATIBLE_IOCTL(DRM_IOCTL_NEW_CTX) -COMPATIBLE_IOCTL(DRM_IOCTL_ADD_DRAW) -COMPATIBLE_IOCTL(DRM_IOCTL_RM_DRAW) -COMPATIBLE_IOCTL(DRM_IOCTL_LOCK) -COMPATIBLE_IOCTL(DRM_IOCTL_UNLOCK) -COMPATIBLE_IOCTL(DRM_IOCTL_FINISH) -#endif /* DRM */ -COMPATIBLE_IOCTL(WIOCSTART) -COMPATIBLE_IOCTL(WIOCSTOP) -COMPATIBLE_IOCTL(WIOCGSTAT) /* And these ioctls need translation */ /* Note SIOCRTMSG is no longer, so this is safe and * the user would have seen just an -EINVAL anyways. */ HANDLE_IOCTL(FBIOPUTCMAP32, fbiogetputcmap) HANDLE_IOCTL(FBIOGETCMAP32, fbiogetputcmap) HANDLE_IOCTL(FBIOSCURSOR32, fbiogscursor) -#if defined(CONFIG_DRM) || defined(CONFIG_DRM_MODULE) -HANDLE_IOCTL(DRM32_IOCTL_VERSION, drm32_version) -HANDLE_IOCTL(DRM32_IOCTL_GET_UNIQUE, drm32_getsetunique) -HANDLE_IOCTL(DRM32_IOCTL_SET_UNIQUE, drm32_getsetunique) -HANDLE_IOCTL(DRM32_IOCTL_ADD_MAP, drm32_addmap) -HANDLE_IOCTL(DRM32_IOCTL_INFO_BUFS, drm32_info_bufs) -HANDLE_IOCTL(DRM32_IOCTL_FREE_BUFS, drm32_free_bufs) -HANDLE_IOCTL(DRM32_IOCTL_MAP_BUFS, drm32_map_bufs) -HANDLE_IOCTL(DRM32_IOCTL_DMA, drm32_dma) -HANDLE_IOCTL(DRM32_IOCTL_RES_CTX, drm32_res_ctx) -#endif /* DRM */ #if 0 HANDLE_IOCTL(RTC32_IRQP_READ, do_rtc_ioctl) HANDLE_IOCTL(RTC32_IRQP_SET, do_rtc_ioctl) diff --git a/arch/sparc64/kernel/process.c b/arch/sparc64/kernel/process.c index 7d10b0397091..02f9dec1d459 100644 --- a/arch/sparc64/kernel/process.c +++ b/arch/sparc64/kernel/process.c @@ -74,7 +74,9 @@ void cpu_idle(void) while (!need_resched()) barrier(); + preempt_enable_no_resched(); schedule(); + preempt_disable(); check_pgt_cache(); } } @@ -83,21 +85,31 @@ void cpu_idle(void) /* * the idle loop on a UltraMultiPenguin... + * + * TIF_POLLING_NRFLAG is set because we do not sleep the cpu + * inside of the idler task, so an interrupt is not needed + * to get a clean fast response. + * + * XXX Reverify this assumption... -DaveM + * + * Addendum: We do want it to do something for the signal + * delivery case, we detect that by just seeing + * if we are trying to send this to an idler or not. */ -#define idle_me_harder() (cpu_data(smp_processor_id()).idle_volume += 1) -#define unidle_me() (cpu_data(smp_processor_id()).idle_volume = 0) void cpu_idle(void) { + cpuinfo_sparc *cpuinfo = &local_cpu_data(); set_thread_flag(TIF_POLLING_NRFLAG); + while(1) { if (need_resched()) { - unidle_me(); - clear_thread_flag(TIF_POLLING_NRFLAG); + cpuinfo->idle_volume = 0; + preempt_enable_no_resched(); schedule(); - set_thread_flag(TIF_POLLING_NRFLAG); + preempt_disable(); check_pgt_cache(); } - idle_me_harder(); + cpuinfo->idle_volume++; /* The store ordering is so that IRQ handlers on * other cpus see our increasing idleness for the buddy diff --git a/arch/sparc64/kernel/sbus.c b/arch/sparc64/kernel/sbus.c index e09ddf927655..96b825055668 100644 --- a/arch/sparc64/kernel/sbus.c +++ b/arch/sparc64/kernel/sbus.c @@ -790,7 +790,7 @@ static unsigned long sysio_irq_offsets[] = { #undef bogon -#define NUM_SYSIO_OFFSETS (sizeof(sysio_irq_offsets) / sizeof(sysio_irq_offsets[0])) +#define NUM_SYSIO_OFFSETS ARRAY_SIZE(sysio_irq_offsets) /* Convert Interrupt Mapping register pointer to associated * Interrupt Clear register pointer, SYSIO specific version. diff --git a/arch/sparc64/kernel/setup.c b/arch/sparc64/kernel/setup.c index c1f34237cdf2..bf1849dd9c49 100644 --- a/arch/sparc64/kernel/setup.c +++ b/arch/sparc64/kernel/setup.c @@ -154,6 +154,7 @@ int prom_callback(long *args) pud_t *pudp; pmd_t *pmdp; pte_t *ptep; + pte_t pte; for_each_process(p) { mm = p->mm; @@ -178,8 +179,9 @@ int prom_callback(long *args) * being called from inside OBP. */ ptep = pte_offset_map(pmdp, va); - if (pte_present(*ptep)) { - tte = pte_val(*ptep); + pte = *ptep; + if (pte_present(pte)) { + tte = pte_val(pte); res = PROM_TRUE; } pte_unmap(ptep); @@ -218,6 +220,7 @@ int prom_callback(long *args) pud_t *pudp; pmd_t *pmdp; pte_t *ptep; + pte_t pte; int error; if ((va >= LOW_OBP_ADDRESS) && (va < HI_OBP_ADDRESS)) { @@ -240,8 +243,9 @@ int prom_callback(long *args) * being called from inside OBP. */ ptep = pte_offset_kernel(pmdp, va); - if (pte_present(*ptep)) { - tte = pte_val(*ptep); + pte = *ptep; + if (pte_present(pte)) { + tte = pte_val(pte); res = PROM_TRUE; } goto done; diff --git a/arch/sparc64/kernel/signal32.c b/arch/sparc64/kernel/signal32.c index aecccd0df1d1..009a86e5ded4 100644 --- a/arch/sparc64/kernel/signal32.c +++ b/arch/sparc64/kernel/signal32.c @@ -863,6 +863,7 @@ static void new_setup_frame32(struct k_sigaction *ka, struct pt_regs *regs, pud_t *pudp = pud_offset(pgdp, address); pmd_t *pmdp = pmd_offset(pudp, address); pte_t *ptep; + pte_t pte; regs->u_regs[UREG_I7] = (unsigned long) (&(sf->insns[0]) - 2); @@ -873,9 +874,10 @@ static void new_setup_frame32(struct k_sigaction *ka, struct pt_regs *regs, preempt_disable(); ptep = pte_offset_map(pmdp, address); - if (pte_present(*ptep)) { + pte = *ptep; + if (pte_present(pte)) { unsigned long page = (unsigned long) - page_address(pte_page(*ptep)); + page_address(pte_page(pte)); wmb(); __asm__ __volatile__("flush %0 + %1" diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c index b137fd63f5e1..797a65493fb8 100644 --- a/arch/sparc64/kernel/smp.c +++ b/arch/sparc64/kernel/smp.c @@ -168,6 +168,9 @@ void __init smp_callin(void) rmb(); cpu_set(cpuid, cpu_online_map); + + /* idle thread is expected to have preempt disabled */ + preempt_disable(); } void cpu_panic(void) @@ -839,43 +842,29 @@ void smp_flush_tlb_all(void) * questionable (in theory the big win for threads is the massive sharing of * address space state across processors). */ + +/* This currently is only used by the hugetlb arch pre-fault + * hook on UltraSPARC-III+ and later when changing the pagesize + * bits of the context register for an address space. + */ void smp_flush_tlb_mm(struct mm_struct *mm) { - /* - * This code is called from two places, dup_mmap and exit_mmap. In the - * former case, we really need a flush. In the later case, the callers - * are single threaded exec_mmap (really need a flush), multithreaded - * exec_mmap case (do not need to flush, since the caller gets a new - * context via activate_mm), and all other callers of mmput() whence - * the flush can be optimized since the associated threads are dead and - * the mm is being torn down (__exit_mm and other mmput callers) or the - * owning thread is dissociating itself from the mm. The - * (atomic_read(&mm->mm_users) == 0) check ensures real work is done - * for single thread exec and dup_mmap cases. An alternate check might - * have been (current->mm != mm). - * Kanoj Sarcar - */ - if (atomic_read(&mm->mm_users) == 0) - return; - - { - u32 ctx = CTX_HWBITS(mm->context); - int cpu = get_cpu(); + u32 ctx = CTX_HWBITS(mm->context); + int cpu = get_cpu(); - if (atomic_read(&mm->mm_users) == 1) { - mm->cpu_vm_mask = cpumask_of_cpu(cpu); - goto local_flush_and_out; - } + if (atomic_read(&mm->mm_users) == 1) { + mm->cpu_vm_mask = cpumask_of_cpu(cpu); + goto local_flush_and_out; + } - smp_cross_call_masked(&xcall_flush_tlb_mm, - ctx, 0, 0, - mm->cpu_vm_mask); + smp_cross_call_masked(&xcall_flush_tlb_mm, + ctx, 0, 0, + mm->cpu_vm_mask); - local_flush_and_out: - __flush_tlb_mm(ctx, SECONDARY_CONTEXT); +local_flush_and_out: + __flush_tlb_mm(ctx, SECONDARY_CONTEXT); - put_cpu(); - } + put_cpu(); } void smp_flush_tlb_pending(struct mm_struct *mm, unsigned long nr, unsigned long *vaddrs) @@ -883,34 +872,13 @@ void smp_flush_tlb_pending(struct mm_struct *mm, unsigned long nr, unsigned long u32 ctx = CTX_HWBITS(mm->context); int cpu = get_cpu(); - if (mm == current->active_mm && atomic_read(&mm->mm_users) == 1) { + if (mm == current->active_mm && atomic_read(&mm->mm_users) == 1) mm->cpu_vm_mask = cpumask_of_cpu(cpu); - goto local_flush_and_out; - } else { - /* This optimization is not valid. Normally - * we will be holding the page_table_lock, but - * there is an exception which is copy_page_range() - * when forking. The lock is held during the individual - * page table updates in the parent, but not at the - * top level, which is where we are invoked. - */ - if (0) { - cpumask_t this_cpu_mask = cpumask_of_cpu(cpu); - - /* By virtue of running under the mm->page_table_lock, - * and mmu_context.h:switch_mm doing the same, the - * following operation is safe. - */ - if (cpus_equal(mm->cpu_vm_mask, this_cpu_mask)) - goto local_flush_and_out; - } - } - - smp_cross_call_masked(&xcall_flush_tlb_pending, - ctx, nr, (unsigned long) vaddrs, - mm->cpu_vm_mask); + else + smp_cross_call_masked(&xcall_flush_tlb_pending, + ctx, nr, (unsigned long) vaddrs, + mm->cpu_vm_mask); -local_flush_and_out: __flush_tlb_pending(ctx, nr, vaddrs); put_cpu(); @@ -1184,20 +1152,9 @@ void __init smp_cpus_done(unsigned int max_cpus) (bogosum/(5000/HZ))%100); } -/* This needn't do anything as we do not sleep the cpu - * inside of the idler task, so an interrupt is not needed - * to get a clean fast response. - * - * XXX Reverify this assumption... -DaveM - * - * Addendum: We do want it to do something for the signal - * delivery case, we detect that by just seeing - * if we are trying to send this to an idler or not. - */ void smp_send_reschedule(int cpu) { - if (cpu_data(cpu).idle_volume == 0) - smp_receive_signal(cpu); + smp_receive_signal(cpu); } /* This is a nop because we capture all other cpus diff --git a/arch/sparc64/kernel/sunos_ioctl32.c b/arch/sparc64/kernel/sunos_ioctl32.c index 7654b8a7f03a..3f619ead22cc 100644 --- a/arch/sparc64/kernel/sunos_ioctl32.c +++ b/arch/sparc64/kernel/sunos_ioctl32.c @@ -24,7 +24,6 @@ #include <linux/smp_lock.h> #include <linux/syscalls.h> #include <linux/compat.h> -#include <asm/kbio.h> #define SUNOS_NR_OPEN 256 diff --git a/arch/sparc64/kernel/time.c b/arch/sparc64/kernel/time.c index 38c5525087a2..459c8fbe02b4 100644 --- a/arch/sparc64/kernel/time.c +++ b/arch/sparc64/kernel/time.c @@ -60,17 +60,6 @@ static void __iomem *mstk48t59_regs; static int set_rtc_mmss(unsigned long); -static __init unsigned long dummy_get_tick(void) -{ - return 0; -} - -static __initdata struct sparc64_tick_ops dummy_tick_ops = { - .get_tick = dummy_get_tick, -}; - -struct sparc64_tick_ops *tick_ops __read_mostly = &dummy_tick_ops; - #define TICK_PRIV_BIT (1UL << 63) #ifdef CONFIG_SMP @@ -200,6 +189,8 @@ static struct sparc64_tick_ops tick_operations __read_mostly = { .softint_mask = 1UL << 0, }; +struct sparc64_tick_ops *tick_ops __read_mostly = &tick_operations; + static void stick_init_tick(unsigned long offset) { tick_disable_protection(); diff --git a/arch/sparc64/mm/fault.c b/arch/sparc64/mm/fault.c index 31fbc67719a1..6f0539aa44d0 100644 --- a/arch/sparc64/mm/fault.c +++ b/arch/sparc64/mm/fault.c @@ -30,8 +30,6 @@ #include <asm/sections.h> #include <asm/kdebug.h> -#define ELEMENTS(arr) (sizeof (arr)/sizeof (arr[0])) - /* * To debug kernel to catch accesses to certain virtual/physical addresses. * Mode = 0 selects physical watchpoints, mode = 1 selects virtual watchpoints. @@ -109,7 +107,7 @@ static void bad_kernel_pc(struct pt_regs *regs) * this. Additionally, to prevent kswapd from ripping ptes from * under us, raise interrupts around the time that we look at the * pte, kswapd will have to wait to get his smp ipi response from - * us. This saves us having to get page_table_lock. + * us. vmtruncate likewise. This saves us having to get pte lock. */ static unsigned int get_user_insn(unsigned long tpc) { diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c index fe865d9a3721..4cf31a2ae19c 100644 --- a/arch/um/drivers/net_kern.c +++ b/arch/um/drivers/net_kern.c @@ -243,34 +243,18 @@ static int uml_net_change_mtu(struct net_device *dev, int new_mtu) return err; } -static int uml_net_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) -{ - static const struct ethtool_drvinfo info = { - .cmd = ETHTOOL_GDRVINFO, - .driver = DRIVER_NAME, - .version = "42", - }; - void *useraddr; - u32 ethcmd; - - switch (cmd) { - case SIOCETHTOOL: - useraddr = ifr->ifr_data; - if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) - return -EFAULT; - switch (ethcmd) { - case ETHTOOL_GDRVINFO: - if (copy_to_user(useraddr, &info, sizeof(info))) - return -EFAULT; - return 0; - default: - return -EOPNOTSUPP; - } - default: - return -EINVAL; - } +static void uml_net_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *info) +{ + strcpy(info->driver, DRIVER_NAME); + strcpy(info->version, "42"); } +static struct ethtool_ops uml_net_ethtool_ops = { + .get_drvinfo = uml_net_get_drvinfo, + .get_link = ethtool_op_get_link, +}; + void uml_net_user_timer_expire(unsigned long _conn) { #ifdef undef @@ -359,7 +343,7 @@ static int eth_configure(int n, void *init, char *mac, dev->tx_timeout = uml_net_tx_timeout; dev->set_mac_address = uml_net_set_mac; dev->change_mtu = uml_net_change_mtu; - dev->do_ioctl = uml_net_ioctl; + dev->ethtool_ops = ¨_net_ethtool_ops; dev->watchdog_timeo = (HZ >> 1); dev->irq = UM_ETH_IRQ; diff --git a/arch/v850/kernel/process.c b/arch/v850/kernel/process.c index 9c708c32c1f0..39cf247cdae4 100644 --- a/arch/v850/kernel/process.c +++ b/arch/v850/kernel/process.c @@ -36,11 +36,8 @@ extern void ret_from_fork (void); /* The idle loop. */ void default_idle (void) { - while (1) { - while (! need_resched ()) - asm ("halt; nop; nop; nop; nop; nop" ::: "cc"); - schedule (); - } + while (! need_resched ()) + asm ("halt; nop; nop; nop; nop; nop" ::: "cc"); } void (*idle)(void) = default_idle; @@ -54,7 +51,14 @@ void (*idle)(void) = default_idle; void cpu_idle (void) { /* endless idle loop with no priority at all */ - (*idle) (); + while (1) { + while (!need_resched()) + (*idle) (); + + preempt_enable_no_resched(); + schedule(); + preempt_disable(); + } } /* diff --git a/arch/x86_64/ia32/ia32_ioctl.c b/arch/x86_64/ia32/ia32_ioctl.c index 4ba0e293d5e5..e335bd0b637d 100644 --- a/arch/x86_64/ia32/ia32_ioctl.c +++ b/arch/x86_64/ia32/ia32_ioctl.c @@ -64,12 +64,6 @@ struct ioctl_trans ioctl_start[] = { #include <linux/compat_ioctl.h> #define DECLARES #include "compat_ioctl.c" -COMPATIBLE_IOCTL(HDIO_SET_KEEPSETTINGS) -COMPATIBLE_IOCTL(HDIO_SCAN_HWIF) -COMPATIBLE_IOCTL(BLKRASET) -COMPATIBLE_IOCTL(0x4B50) /* KDGHWCLK - not in the kernel, but don't complain */ -COMPATIBLE_IOCTL(0x4B51) /* KDSHWCLK - not in the kernel, but don't complain */ -COMPATIBLE_IOCTL(FIOQSIZE) /* And these ioctls need translation */ /* realtime device */ diff --git a/arch/x86_64/kernel/process.c b/arch/x86_64/kernel/process.c index b5a89c0bdf59..59be85d9a4bc 100644 --- a/arch/x86_64/kernel/process.c +++ b/arch/x86_64/kernel/process.c @@ -86,12 +86,22 @@ EXPORT_SYMBOL(enable_hlt); */ void default_idle(void) { + local_irq_enable(); + if (!atomic_read(&hlt_counter)) { - local_irq_disable(); - if (!need_resched()) - safe_halt(); - else - local_irq_enable(); + clear_thread_flag(TIF_POLLING_NRFLAG); + smp_mb__after_clear_bit(); + while (!need_resched()) { + local_irq_disable(); + if (!need_resched()) + safe_halt(); + else + local_irq_enable(); + } + set_thread_flag(TIF_POLLING_NRFLAG); + } else { + while (!need_resched()) + cpu_relax(); } } @@ -102,30 +112,16 @@ void default_idle(void) */ static void poll_idle (void) { - int oldval; - local_irq_enable(); - /* - * Deal with another CPU just having chosen a thread to - * run here: - */ - oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED); - - if (!oldval) { - set_thread_flag(TIF_POLLING_NRFLAG); - asm volatile( - "2:" - "testl %0,%1;" - "rep; nop;" - "je 2b;" - : : - "i" (_TIF_NEED_RESCHED), - "m" (current_thread_info()->flags)); - clear_thread_flag(TIF_POLLING_NRFLAG); - } else { - set_need_resched(); - } + asm volatile( + "2:" + "testl %0,%1;" + "rep; nop;" + "je 2b;" + : : + "i" (_TIF_NEED_RESCHED), + "m" (current_thread_info()->flags)); } void cpu_idle_wait(void) @@ -187,6 +183,8 @@ static inline void play_dead(void) */ void cpu_idle (void) { + set_thread_flag(TIF_POLLING_NRFLAG); + /* endless idle loop with no priority at all */ while (1) { while (!need_resched()) { @@ -204,7 +202,9 @@ void cpu_idle (void) idle(); } + preempt_enable_no_resched(); schedule(); + preempt_disable(); } } @@ -219,15 +219,12 @@ static void mwait_idle(void) { local_irq_enable(); - if (!need_resched()) { - set_thread_flag(TIF_POLLING_NRFLAG); - do { - __monitor((void *)¤t_thread_info()->flags, 0, 0); - if (need_resched()) - break; - __mwait(0, 0); - } while (!need_resched()); - clear_thread_flag(TIF_POLLING_NRFLAG); + while (!need_resched()) { + __monitor((void *)¤t_thread_info()->flags, 0, 0); + smp_mb(); + if (need_resched()) + break; + __mwait(0, 0); } } diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c index 4b5b088ec102..c4e59bbdc187 100644 --- a/arch/x86_64/kernel/smpboot.c +++ b/arch/x86_64/kernel/smpboot.c @@ -472,6 +472,7 @@ void __cpuinit start_secondary(void) * things done here to the most necessary things. */ cpu_init(); + preempt_disable(); smp_callin(); /* otherwise gcc will move up the smp_processor_id before the cpu_init */ diff --git a/arch/xtensa/kernel/process.c b/arch/xtensa/kernel/process.c index 08ef6d82ee51..6a44b54ae817 100644 --- a/arch/xtensa/kernel/process.c +++ b/arch/xtensa/kernel/process.c @@ -96,8 +96,9 @@ void cpu_idle(void) while (1) { while (!need_resched()) platform_idle(); - preempt_enable(); + preempt_enable_no_resched(); schedule(); + preempt_disable(); } } diff --git a/arch/xtensa/platform-iss/network.c b/arch/xtensa/platform-iss/network.c index 0682ffd38175..96b9bb4a478d 100644 --- a/arch/xtensa/platform-iss/network.c +++ b/arch/xtensa/platform-iss/network.c @@ -611,38 +611,6 @@ static int iss_net_change_mtu(struct net_device *dev, int new_mtu) return -EINVAL; } -static int iss_net_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) -{ -#if 0 - static const struct ethtool_drvinfo info = { - .cmd = ETHTOOL_GDRVINFO, - .driver = DRIVER_NAME, - .version = "42", - }; - void *useraddr; - u32 ethcmd; - - switch (cmd) { - case SIOCETHTOOL: - useraddr = ifr->ifr_data; - if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) - return -EFAULT; - - switch (ethcmd) { - case ETHTOOL_GDRVINFO: - if (copy_to_user(useraddr, &info, sizeof(info))) - return -EFAULT; - return 0; - default: - return -EOPNOTSUPP; - } - default: - return -EINVAL; - } -#endif - return -EINVAL; -} - void iss_net_user_timer_expire(unsigned long _conn) { } @@ -730,7 +698,6 @@ static int iss_net_configure(int index, char *init) dev->tx_timeout = iss_net_tx_timeout; dev->set_mac_address = iss_net_set_mac; dev->change_mtu = iss_net_change_mtu; - dev->do_ioctl = iss_net_ioctl; dev->watchdog_timeo = (HZ >> 1); dev->irq = -1; |