From 564c90aa07cd43dc434d46cef8a15773a23d49a2 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 28 Jun 2005 13:46:09 +0100 Subject: [PATCH] ARM SMP: Use local_flush_tlb* where we really want to be local Signed-off-by: Russell King --- arch/arm/mm/init.c | 2 +- arch/arm/mm/mm-armv.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 6dcb23d64bf5..edffa47a4b2a 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -437,7 +437,7 @@ void __init paging_init(struct meminfo *mi, struct machine_desc *mdesc) memtable_init(mi); if (mdesc->map_io) mdesc->map_io(); - flush_tlb_all(); + local_flush_tlb_all(); /* * initialise the zones within each node diff --git a/arch/arm/mm/mm-armv.c b/arch/arm/mm/mm-armv.c index 052ab443ec4e..c3bd503b43a2 100644 --- a/arch/arm/mm/mm-armv.c +++ b/arch/arm/mm/mm-armv.c @@ -682,7 +682,7 @@ void __init memtable_init(struct meminfo *mi) } flush_cache_all(); - flush_tlb_all(); + local_flush_tlb_all(); top_pmd = pmd_off_k(0xffff0000); } -- cgit v1.2.3 From 4b0ef3b1127776d4a2787d7530ac0c4da82c2331 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 28 Jun 2005 13:49:16 +0100 Subject: [PATCH] ARM SMP: Add IPI support code for SMP TLB flushing Signed-off-by: Russell King --- arch/arm/kernel/smp.c | 123 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 123 insertions(+) diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 34892758f098..a931409c8fe4 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -502,3 +502,126 @@ int __init setup_profiling_timer(unsigned int multiplier) { return -EINVAL; } + +static int +on_each_cpu_mask(void (*func)(void *), void *info, int retry, int wait, + cpumask_t mask) +{ + int ret = 0; + + preempt_disable(); + + ret = smp_call_function_on_cpu(func, info, retry, wait, mask); + if (cpu_isset(smp_processor_id(), mask)) + func(info); + + preempt_enable(); + + return ret; +} + +/**********************************************************************/ + +/* + * TLB operations + */ +struct tlb_args { + struct vm_area_struct *ta_vma; + unsigned long ta_start; + unsigned long ta_end; +}; + +static inline void ipi_flush_tlb_all(void *ignored) +{ + local_flush_tlb_all(); +} + +static inline void ipi_flush_tlb_mm(void *arg) +{ + struct mm_struct *mm = (struct mm_struct *)arg; + + local_flush_tlb_mm(mm); +} + +static inline void ipi_flush_tlb_page(void *arg) +{ + struct tlb_args *ta = (struct tlb_args *)arg; + + local_flush_tlb_page(ta->ta_vma, ta->ta_start); +} + +static inline void ipi_flush_tlb_kernel_page(void *arg) +{ + struct tlb_args *ta = (struct tlb_args *)arg; + + local_flush_tlb_kernel_page(ta->ta_start); +} + +static inline void ipi_flush_tlb_range(void *arg) +{ + struct tlb_args *ta = (struct tlb_args *)arg; + + local_flush_tlb_range(ta->ta_vma, ta->ta_start, ta->ta_end); +} + +static inline void ipi_flush_tlb_kernel_range(void *arg) +{ + struct tlb_args *ta = (struct tlb_args *)arg; + + local_flush_tlb_kernel_range(ta->ta_start, ta->ta_end); +} + +void flush_tlb_all(void) +{ + on_each_cpu(ipi_flush_tlb_all, NULL, 1, 1); +} + +void flush_tlb_mm(struct mm_struct *mm) +{ + cpumask_t mask = mm->cpu_vm_mask; + + on_each_cpu_mask(ipi_flush_tlb_mm, mm, 1, 1, mask); +} + +void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr) +{ + cpumask_t mask = vma->vm_mm->cpu_vm_mask; + struct tlb_args ta; + + ta.ta_vma = vma; + ta.ta_start = uaddr; + + on_each_cpu_mask(ipi_flush_tlb_page, &ta, 1, 1, mask); +} + +void flush_tlb_kernel_page(unsigned long kaddr) +{ + struct tlb_args ta; + + ta.ta_start = kaddr; + + on_each_cpu(ipi_flush_tlb_kernel_page, &ta, 1, 1); +} + +void flush_tlb_range(struct vm_area_struct *vma, + unsigned long start, unsigned long end) +{ + cpumask_t mask = vma->vm_mm->cpu_vm_mask; + struct tlb_args ta; + + ta.ta_vma = vma; + ta.ta_start = start; + ta.ta_end = end; + + on_each_cpu_mask(ipi_flush_tlb_range, &ta, 1, 1, mask); +} + +void flush_tlb_kernel_range(unsigned long start, unsigned long end) +{ + struct tlb_args ta; + + ta.ta_start = start; + ta.ta_end = end; + + on_each_cpu(ipi_flush_tlb_kernel_range, &ta, 1, 1); +} -- cgit v1.2.3 From 053a7b5b7617a72d7c61b6f84196d1c0f79b9849 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 28 Jun 2005 19:22:25 +0100 Subject: [PATCH] ARM SMP: __xchg support This enables the existing __xchg implementation to be used on SMP. Signed-off-by: Russell King --- include/asm-arm/system.h | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/include/asm-arm/system.h b/include/asm-arm/system.h index 3d0d2860b6db..cdf49f442fd2 100644 --- a/include/asm-arm/system.h +++ b/include/asm-arm/system.h @@ -290,7 +290,6 @@ do { \ }) #ifdef CONFIG_SMP -#error SMP not supported #define smp_mb() mb() #define smp_rmb() rmb() @@ -304,6 +303,8 @@ do { \ #define smp_wmb() barrier() #define smp_read_barrier_depends() do { } while(0) +#endif /* CONFIG_SMP */ + #if defined(CONFIG_CPU_SA1100) || defined(CONFIG_CPU_SA110) /* * On the StrongARM, "swp" is terminally broken since it bypasses the @@ -316,9 +317,16 @@ do { \ * * We choose (1) since its the "easiest" to achieve here and is not * dependent on the processor type. + * + * NOTE that this solution won't work on an SMP system, so explcitly + * forbid it here. */ +#ifdef CONFIG_SMP +#error SMP is not supported on SA1100/SA110 +#else #define swp_is_buggy #endif +#endif static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size) { @@ -361,8 +369,6 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size return ret; } -#endif /* CONFIG_SMP */ - #endif /* __ASSEMBLY__ */ #define arch_align_stack(x) (x) -- cgit v1.2.3 From f705b1aed7002495a504086705ff9725ed9412dc Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Wed, 29 Jun 2005 11:09:15 +0100 Subject: [PATCH] ARM: 2764/1: S3C24XX - Common PM functions for Simtec boards Patch from Ben Dooks All current S3C24XX implementations from Simtec share the same requirements for suspend/resume information. This patch moves the save code out of the mach-bast.c file, and into it's own so it can be shared by all the current Simtec S3C24XX implementations. Signed-off-by: Ben Dooks Signed-off-by: Russell King --- arch/arm/mach-s3c2410/Kconfig | 5 +++ arch/arm/mach-s3c2410/Makefile | 1 + arch/arm/mach-s3c2410/mach-bast.c | 39 +++-------------------- arch/arm/mach-s3c2410/pm-simtec.c | 65 +++++++++++++++++++++++++++++++++++++++ 4 files changed, 75 insertions(+), 35 deletions(-) create mode 100644 arch/arm/mach-s3c2410/pm-simtec.c diff --git a/arch/arm/mach-s3c2410/Kconfig b/arch/arm/mach-s3c2410/Kconfig index 534df0c6c770..d4d03d0daaec 100644 --- a/arch/arm/mach-s3c2410/Kconfig +++ b/arch/arm/mach-s3c2410/Kconfig @@ -154,6 +154,11 @@ config S3C2410_PM_CHECK_CHUNKSIZE the CRC data block will take more memory, but wil identify any faults with better precision. +config PM_SIMTEC + bool + depends on PM && (ARCH_BAST || MACH_VR1000) + default y + config S3C2410_LOWLEVEL_UART_PORT int "S3C2410 UART to use for low-level messages" default 0 diff --git a/arch/arm/mach-s3c2410/Makefile b/arch/arm/mach-s3c2410/Makefile index 7c379aad5d62..f99b689e4392 100644 --- a/arch/arm/mach-s3c2410/Makefile +++ b/arch/arm/mach-s3c2410/Makefile @@ -18,6 +18,7 @@ obj-$(CONFIG_S3C2410_DMA) += dma.o # Power Management support obj-$(CONFIG_PM) += pm.o sleep.o +obj-$(CONFIG_PM_SIMTEC) += pm-simtec.o # S3C2440 support diff --git a/arch/arm/mach-s3c2410/mach-bast.c b/arch/arm/mach-s3c2410/mach-bast.c index f3e970039b65..549bcb1f32c0 100644 --- a/arch/arm/mach-s3c2410/mach-bast.c +++ b/arch/arm/mach-s3c2410/mach-bast.c @@ -27,6 +27,7 @@ * 10-Mar-2005 LCVR Changed S3C2410_VA to S3C24XX_VA * 14-Mar-2006 BJD Updated for __iomem changes * 22-Jun-2006 BJD Added DM9000 platform information + * 28-Jun-2006 BJD Moved pm functionality out to common code */ #include @@ -67,7 +68,6 @@ #include "devs.h" #include "cpu.h" #include "usb-simtec.h" -#include "pm.h" #define COPYRIGHT ", (c) 2004-2005 Simtec Electronics" @@ -405,44 +405,13 @@ void __init bast_map_io(void) usb_simtec_init(); } -void __init bast_init_irq(void) -{ - s3c24xx_init_irq(); -} - -#ifdef CONFIG_PM - -/* bast_init_machine - * - * enable the power management functions for the EB2410ITX -*/ - -static __init void bast_init_machine(void) -{ - unsigned long gstatus4; - - printk(KERN_INFO "BAST Power Manangement" COPYRIGHT "\n"); - - gstatus4 = (__raw_readl(S3C2410_BANKCON7) & 0x3) << 30; - gstatus4 |= (__raw_readl(S3C2410_BANKCON6) & 0x3) << 28; - gstatus4 |= (__raw_readl(S3C2410_BANKSIZE) & S3C2410_BANKSIZE_MASK); - - __raw_writel(gstatus4, S3C2410_GSTATUS4); - - s3c2410_pm_init(); -} - -#else -#define bast_init_machine NULL -#endif - MACHINE_START(BAST, "Simtec-BAST") MAINTAINER("Ben Dooks ") BOOT_MEM(S3C2410_SDRAM_PA, S3C2410_PA_UART, (u32)S3C24XX_VA_UART) BOOT_PARAMS(S3C2410_SDRAM_PA + 0x100) - MAPIO(bast_map_io) - INITIRQ(bast_init_irq) - .init_machine = bast_init_machine, + + .map_io = bast_map_io, + .init_irq = s3c24xx_init_irq, .timer = &s3c24xx_timer, MACHINE_END diff --git a/arch/arm/mach-s3c2410/pm-simtec.c b/arch/arm/mach-s3c2410/pm-simtec.c new file mode 100644 index 000000000000..2cb798832223 --- /dev/null +++ b/arch/arm/mach-s3c2410/pm-simtec.c @@ -0,0 +1,65 @@ +/* linux/arch/arm/mach-s3c2410/pm-simtec.c + * + * Copyright (c) 2004 Simtec Electronics + * Ben Dooks + * + * http://armlinux.simtec.co.uk/ + * + * Power Management helpers for Simtec S3C24XX implementations + * + * 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 +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include + +#include +#include +#include +#include + +#include + +#include "pm.h" + +#define COPYRIGHT ", (c) 2005 Simtec Electronics" + +/* pm_simtec_init + * + * enable the power management functions +*/ + +static __init int pm_simtec_init(void) +{ + unsigned long gstatus4; + + /* check which machine we are running on */ + + if (!machine_is_bast() && !machine_is_vr1000()) + return 0; + + printk(KERN_INFO "Simtec Board Power Manangement" COPYRIGHT "\n"); + + gstatus4 = (__raw_readl(S3C2410_BANKCON7) & 0x3) << 30; + gstatus4 |= (__raw_readl(S3C2410_BANKCON6) & 0x3) << 28; + gstatus4 |= (__raw_readl(S3C2410_BANKSIZE) & S3C2410_BANKSIZE_MASK); + + __raw_writel(gstatus4, S3C2410_GSTATUS4); + + return s3c2410_pm_init(); +} + +arch_initcall(pm_simtec_init); -- cgit v1.2.3 From 6904b2465cf30265a67711025815784aa345bfad Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Wed, 29 Jun 2005 11:09:15 +0100 Subject: [PATCH] ARM: 2765/1: S3C24XX - small cleanups in arch/arm/mach-s3c2410 Patch from Ben Dooks Re-tab the devs.c file, and change the initialiser for the mach-vr1000.c to use `.xxx = yyy` form. Signed-off-by: Ben Dooks Signed-off-by: Russell King --- arch/arm/mach-s3c2410/devs.c | 4 ++-- arch/arm/mach-s3c2410/mach-vr1000.c | 8 ++------ 2 files changed, 4 insertions(+), 8 deletions(-) diff --git a/arch/arm/mach-s3c2410/devs.c b/arch/arm/mach-s3c2410/devs.c index 64792f678668..4664bd11adc1 100644 --- a/arch/arm/mach-s3c2410/devs.c +++ b/arch/arm/mach-s3c2410/devs.c @@ -96,8 +96,8 @@ struct platform_device s3c_device_lcd = { .num_resources = ARRAY_SIZE(s3c_lcd_resource), .resource = s3c_lcd_resource, .dev = { - .dma_mask = &s3c_device_lcd_dmamask, - .coherent_dma_mask = 0xffffffffUL + .dma_mask = &s3c_device_lcd_dmamask, + .coherent_dma_mask = 0xffffffffUL } }; diff --git a/arch/arm/mach-s3c2410/mach-vr1000.c b/arch/arm/mach-s3c2410/mach-vr1000.c index 76be074944a0..1db2855e3e56 100644 --- a/arch/arm/mach-s3c2410/mach-vr1000.c +++ b/arch/arm/mach-s3c2410/mach-vr1000.c @@ -371,16 +371,12 @@ void __init vr1000_map_io(void) usb_simtec_init(); } -void __init vr1000_init_irq(void) -{ - s3c24xx_init_irq(); -} MACHINE_START(VR1000, "Thorcom-VR1000") MAINTAINER("Ben Dooks ") BOOT_MEM(S3C2410_SDRAM_PA, S3C2410_PA_UART, (u32)S3C24XX_VA_UART) BOOT_PARAMS(S3C2410_SDRAM_PA + 0x100) - MAPIO(vr1000_map_io) - INITIRQ(vr1000_init_irq) + .map_io = vr1000_map_io, + .init_irq = s3c24xx_init_irq, .timer = &s3c24xx_timer, MACHINE_END -- cgit v1.2.3 From b720f73296916e87c744193c57bc8687d35888fe Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 29 Jun 2005 15:15:54 +0100 Subject: [PATCH] ARM: Convert ARM timer implementations to use readl/writel Convert ARMs timer implementations to use readl/writel instead of accessing the registers via a struct. People have recently asked if accessing timers via a structure is the "right way" and its not the Linux way. So fix this code to conform to "The Linux Way"(tm). Signed-off-by: Russell King Acked-by: Catalin Marinas --- arch/arm/mach-integrator/core.c | 42 +++++++++---------------- arch/arm/mach-versatile/core.c | 61 ++++++++++++++---------------------- include/asm-arm/hardware/arm_timer.h | 21 +++++++++++++ 3 files changed, 59 insertions(+), 65 deletions(-) create mode 100644 include/asm-arm/hardware/arm_timer.h diff --git a/arch/arm/mach-integrator/core.c b/arch/arm/mach-integrator/core.c index 9222e57bd872..797c7fddaa0d 100644 --- a/arch/arm/mach-integrator/core.c +++ b/arch/arm/mach-integrator/core.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include #include @@ -156,16 +157,6 @@ EXPORT_SYMBOL(cm_control); #define TICKS2USECS(x) ((x) / TICKS_PER_uSEC) #endif -/* - * What does it look like? - */ -typedef struct TimerStruct { - unsigned long TimerLoad; - unsigned long TimerValue; - unsigned long TimerControl; - unsigned long TimerClear; -} TimerStruct_t; - static unsigned long timer_reload; /* @@ -174,7 +165,6 @@ static unsigned long timer_reload; */ unsigned long integrator_gettimeoffset(void) { - volatile TimerStruct_t *timer1 = (TimerStruct_t *)TIMER1_VA_BASE; unsigned long ticks1, ticks2, status; /* @@ -183,11 +173,11 @@ unsigned long integrator_gettimeoffset(void) * an interrupt. We get around this by ensuring that the * counter has not reloaded between our two reads. */ - ticks2 = timer1->TimerValue & 0xffff; + ticks2 = readl(TIMER1_VA_BASE + TIMER_VALUE) & 0xffff; do { ticks1 = ticks2; status = __raw_readl(VA_IC_BASE + IRQ_RAW_STATUS); - ticks2 = timer1->TimerValue & 0xffff; + ticks2 = readl(TIMER1_VA_BASE + TIMER_VALUE) & 0xffff; } while (ticks2 > ticks1); /* @@ -213,20 +203,19 @@ unsigned long integrator_gettimeoffset(void) static irqreturn_t integrator_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) { - volatile TimerStruct_t *timer1 = (volatile TimerStruct_t *)TIMER1_VA_BASE; - write_seqlock(&xtime_lock); /* * clear the interrupt */ - timer1->TimerClear = 1; + writel(1, TIMER1_VA_BASE + TIMER_INTCLR); /* * the clock tick routines are only processed on the * primary CPU */ if (hard_smp_processor_id() == 0) { + nmi_tick(); timer_tick(regs); #ifdef CONFIG_SMP smp_send_timer(); @@ -256,32 +245,29 @@ static struct irqaction integrator_timer_irq = { */ void __init integrator_time_init(unsigned long reload, unsigned int ctrl) { - volatile TimerStruct_t *timer0 = (volatile TimerStruct_t *)TIMER0_VA_BASE; - volatile TimerStruct_t *timer1 = (volatile TimerStruct_t *)TIMER1_VA_BASE; - volatile TimerStruct_t *timer2 = (volatile TimerStruct_t *)TIMER2_VA_BASE; - unsigned int timer_ctrl = 0x80 | 0x40; /* periodic */ + unsigned int timer_ctrl = TIMER_CTRL_ENABLE | TIMER_CTRL_PERIODIC; timer_reload = reload; timer_ctrl |= ctrl; if (timer_reload > 0x100000) { timer_reload >>= 8; - timer_ctrl |= 0x08; /* /256 */ + timer_ctrl |= TIMER_CTRL_DIV256; } else if (timer_reload > 0x010000) { timer_reload >>= 4; - timer_ctrl |= 0x04; /* /16 */ + timer_ctrl |= TIMER_CTRL_DIV16; } /* * Initialise to a known state (all timers off) */ - timer0->TimerControl = 0; - timer1->TimerControl = 0; - timer2->TimerControl = 0; + writel(0, TIMER0_VA_BASE + TIMER_CTRL); + writel(0, TIMER1_VA_BASE + TIMER_CTRL); + writel(0, TIMER2_VA_BASE + TIMER_CTRL); - timer1->TimerLoad = timer_reload; - timer1->TimerValue = timer_reload; - timer1->TimerControl = timer_ctrl; + writel(timer_reload, TIMER1_VA_BASE + TIMER_LOAD); + writel(timer_reload, TIMER1_VA_BASE + TIMER_VALUE); + writel(timer_ctrl, TIMER1_VA_BASE + TIMER_CTRL); /* * Make irqs happen for the system timer diff --git a/arch/arm/mach-versatile/core.c b/arch/arm/mach-versatile/core.c index 9d1f2253e987..f01c0f8a2bb3 100644 --- a/arch/arm/mach-versatile/core.c +++ b/arch/arm/mach-versatile/core.c @@ -33,6 +33,7 @@ #include #include #include +#include #include #include @@ -788,38 +789,25 @@ void __init versatile_init(void) */ #define TIMER_INTERVAL (TICKS_PER_uSEC * mSEC_10) #if TIMER_INTERVAL >= 0x100000 -#define TIMER_RELOAD (TIMER_INTERVAL >> 8) /* Divide by 256 */ -#define TIMER_CTRL 0x88 /* Enable, Clock / 256 */ +#define TIMER_RELOAD (TIMER_INTERVAL >> 8) +#define TIMER_DIVISOR (TIMER_CTRL_DIV256) #define TICKS2USECS(x) (256 * (x) / TICKS_PER_uSEC) #elif TIMER_INTERVAL >= 0x10000 #define TIMER_RELOAD (TIMER_INTERVAL >> 4) /* Divide by 16 */ -#define TIMER_CTRL 0x84 /* Enable, Clock / 16 */ +#define TIMER_DIVISOR (TIMER_CTRL_DIV16) #define TICKS2USECS(x) (16 * (x) / TICKS_PER_uSEC) #else #define TIMER_RELOAD (TIMER_INTERVAL) -#define TIMER_CTRL 0x80 /* Enable */ +#define TIMER_DIVISOR (TIMER_CTRL_DIV1) #define TICKS2USECS(x) ((x) / TICKS_PER_uSEC) #endif -#define TIMER_CTRL_IE (1 << 5) /* Interrupt Enable */ - -/* - * What does it look like? - */ -typedef struct TimerStruct { - unsigned long TimerLoad; - unsigned long TimerValue; - unsigned long TimerControl; - unsigned long TimerClear; -} TimerStruct_t; - /* * Returns number of ms since last clock interrupt. Note that interrupts * will have been disabled by do_gettimeoffset() */ static unsigned long versatile_gettimeoffset(void) { - volatile TimerStruct_t *timer0 = (TimerStruct_t *)TIMER0_VA_BASE; unsigned long ticks1, ticks2, status; /* @@ -828,11 +816,11 @@ static unsigned long versatile_gettimeoffset(void) * an interrupt. We get around this by ensuring that the * counter has not reloaded between our two reads. */ - ticks2 = timer0->TimerValue & 0xffff; + ticks2 = readl(TIMER0_VA_BASE + TIMER_VALUE) & 0xffff; do { ticks1 = ticks2; status = __raw_readl(VA_IC_BASE + VIC_IRQ_RAW_STATUS); - ticks2 = timer0->TimerValue & 0xffff; + ticks2 = readl(TIMER0_VA_BASE + TIMER_VALUE) & 0xffff; } while (ticks2 > ticks1); /* @@ -859,12 +847,10 @@ static unsigned long versatile_gettimeoffset(void) */ static irqreturn_t versatile_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) { - volatile TimerStruct_t *timer0 = (volatile TimerStruct_t *)TIMER0_VA_BASE; - write_seqlock(&xtime_lock); // ...clear the interrupt - timer0->TimerClear = 1; + writel(1, TIMER0_VA_BASE + TIMER_INTCLR); timer_tick(regs); @@ -884,31 +870,32 @@ static struct irqaction versatile_timer_irq = { */ static void __init versatile_timer_init(void) { - volatile TimerStruct_t *timer0 = (volatile TimerStruct_t *)TIMER0_VA_BASE; - volatile TimerStruct_t *timer1 = (volatile TimerStruct_t *)TIMER1_VA_BASE; - volatile TimerStruct_t *timer2 = (volatile TimerStruct_t *)TIMER2_VA_BASE; - volatile TimerStruct_t *timer3 = (volatile TimerStruct_t *)TIMER3_VA_BASE; + u32 val; /* * set clock frequency: * VERSATILE_REFCLK is 32KHz * VERSATILE_TIMCLK is 1MHz */ - *(volatile unsigned int *)IO_ADDRESS(VERSATILE_SCTL_BASE) |= - ((VERSATILE_TIMCLK << VERSATILE_TIMER1_EnSel) | (VERSATILE_TIMCLK << VERSATILE_TIMER2_EnSel) | - (VERSATILE_TIMCLK << VERSATILE_TIMER3_EnSel) | (VERSATILE_TIMCLK << VERSATILE_TIMER4_EnSel)); + val = readl(IO_ADDRESS(VERSATILE_SCTL_BASE)); + writel((VERSATILE_TIMCLK << VERSATILE_TIMER1_EnSel) | + (VERSATILE_TIMCLK << VERSATILE_TIMER2_EnSel) | + (VERSATILE_TIMCLK << VERSATILE_TIMER3_EnSel) | + (VERSATILE_TIMCLK << VERSATILE_TIMER4_EnSel) | val, + IO_ADDRESS(VERSATILE_SCTL_BASE)); /* * Initialise to a known state (all timers off) */ - timer0->TimerControl = 0; - timer1->TimerControl = 0; - timer2->TimerControl = 0; - timer3->TimerControl = 0; - - timer0->TimerLoad = TIMER_RELOAD; - timer0->TimerValue = TIMER_RELOAD; - timer0->TimerControl = TIMER_CTRL | 0x40 | TIMER_CTRL_IE; /* periodic + IE */ + writel(0, TIMER0_VA_BASE + TIMER_CTRL); + writel(0, TIMER1_VA_BASE + TIMER_CTRL); + writel(0, TIMER2_VA_BASE + TIMER_CTRL); + writel(0, TIMER3_VA_BASE + TIMER_CTRL); + + writel(TIMER_RELOAD, TIMER0_VA_BASE + TIMER_LOAD); + writel(TIMER_RELOAD, TIMER0_VA_BASE + TIMER_VALUE); + writel(TIMER_DIVISOR | TIMER_CTRL_ENABLE | TIMER_CTRL_PERIODIC | + TIMER_CTRL_IE, TIMER0_VA_BASE + TIMER_CTRL); /* * Make irqs happen for the system timer diff --git a/include/asm-arm/hardware/arm_timer.h b/include/asm-arm/hardware/arm_timer.h new file mode 100644 index 000000000000..04be3bdf46b8 --- /dev/null +++ b/include/asm-arm/hardware/arm_timer.h @@ -0,0 +1,21 @@ +#ifndef __ASM_ARM_HARDWARE_ARM_TIMER_H +#define __ASM_ARM_HARDWARE_ARM_TIMER_H + +#define TIMER_LOAD 0x00 +#define TIMER_VALUE 0x04 +#define TIMER_CTRL 0x08 +#define TIMER_CTRL_ONESHOT (1 << 0) +#define TIMER_CTRL_32BIT (1 << 1) +#define TIMER_CTRL_DIV1 (0 << 2) +#define TIMER_CTRL_DIV16 (1 << 2) +#define TIMER_CTRL_DIV256 (2 << 2) +#define TIMER_CTRL_IE (1 << 5) /* Interrupt Enable (versatile only) */ +#define TIMER_CTRL_PERIODIC (1 << 6) +#define TIMER_CTRL_ENABLE (1 << 7) + +#define TIMER_INTCLR 0x0c +#define TIMER_RIS 0x10 +#define TIMER_MIS 0x14 +#define TIMER_BGLOAD 0x18 + +#endif -- cgit v1.2.3 From 9ec3c75cdeb57fa3c12a813c63706ece7fb63648 Mon Sep 17 00:00:00 2001 From: Richard Purdie Date: Wed, 29 Jun 2005 15:17:49 +0100 Subject: [PATCH] ARM: 2768/1: PXA: Add a required header file for LL_DEBUG Patch from Richard Purdie With DEBUG enabled, head.S includes arch/debug-macro.S. On the PXA, this contains references to the macro io_p2v() so hardware.h needs to be included. Signed-off-by: Richard Purdie Signed-off-by: Russell King --- include/asm-arm/arch-pxa/debug-macro.S | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/asm-arm/arch-pxa/debug-macro.S b/include/asm-arm/arch-pxa/debug-macro.S index f288e74b67c2..b6ec68879176 100644 --- a/include/asm-arm/arch-pxa/debug-macro.S +++ b/include/asm-arm/arch-pxa/debug-macro.S @@ -11,6 +11,8 @@ * */ +#include "hardware.h" + .macro addruart,rx mrc p15, 0, \rx, c1, c0 tst \rx, #1 @ MMU enabled? -- cgit v1.2.3 From aaaa3f9e51245be3215ff67bb3c7aaf5abb82f00 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Wed, 29 Jun 2005 15:34:39 +0100 Subject: [PATCH] ARM: 2769/1: cpu_init() stack setup fix Patch from Catalin Marinas The compiler allocates r14 for the stk variable in the __asm__ directive. This is a shadowed register and gets changed when the mode is changed, causing random values in the SP register. The patch adds a clobber for the r14 register. Signed-off-by: Catalin Marinas Signed-off-by: Russell King --- arch/arm/kernel/setup.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 8cf733daa800..35b7273cfdb4 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -359,7 +359,8 @@ void cpu_init(void) "I" (offsetof(struct stack, abt[0])), "I" (PSR_F_BIT | PSR_I_BIT | UND_MODE), "I" (offsetof(struct stack, und[0])), - "I" (PSR_F_BIT | PSR_I_BIT | SVC_MODE)); + "I" (PSR_F_BIT | PSR_I_BIT | SVC_MODE) + : "r14"); } static struct machine_desc * __init setup_machine(unsigned int nr) -- cgit v1.2.3 From c7e788766610bdc764d7150e69ace2e0c4196cf0 Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Wed, 29 Jun 2005 18:10:54 +0100 Subject: [PATCH] ARM: 2723/2: remove __udivdi3 and __umoddi3 from the kernel Patch from Nicolas Pitre Those are big, slow and generally not recommended for kernel code. They are even not present on i386. So it should be concluded that one could as well get away with do_div() alone. Signed-off-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/kernel/armksyms.c | 6 -- arch/arm/lib/Makefile | 2 +- arch/arm/lib/longlong.h | 183 ------------------------------------- arch/arm/lib/udivdi3.c | 222 --------------------------------------------- drivers/net/arm/etherh.c | 16 ++-- 5 files changed, 8 insertions(+), 421 deletions(-) delete mode 100644 arch/arm/lib/longlong.h delete mode 100644 arch/arm/lib/udivdi3.c diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c index 4c38bd8bc298..b713c44c6fb4 100644 --- a/arch/arm/kernel/armksyms.c +++ b/arch/arm/kernel/armksyms.c @@ -30,9 +30,6 @@ extern void __lshrdi3(void); extern void __modsi3(void); extern void __muldi3(void); extern void __ucmpdi2(void); -extern void __udivdi3(void); -extern void __umoddi3(void); -extern void __udivmoddi4(void); extern void __udivsi3(void); extern void __umodsi3(void); extern void __do_div64(void); @@ -134,9 +131,6 @@ EXPORT_SYMBOL(__lshrdi3); EXPORT_SYMBOL(__modsi3); EXPORT_SYMBOL(__muldi3); EXPORT_SYMBOL(__ucmpdi2); -EXPORT_SYMBOL(__udivdi3); -EXPORT_SYMBOL(__umoddi3); -EXPORT_SYMBOL(__udivmoddi4); EXPORT_SYMBOL(__udivsi3); EXPORT_SYMBOL(__umodsi3); EXPORT_SYMBOL(__do_div64); diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile index c0e65833ffc4..8725d63e4219 100644 --- a/arch/arm/lib/Makefile +++ b/arch/arm/lib/Makefile @@ -11,7 +11,7 @@ lib-y := backtrace.o changebit.o csumipv6.o csumpartial.o \ strnlen_user.o strchr.o strrchr.o testchangebit.o \ testclearbit.o testsetbit.o uaccess.o getuser.o \ putuser.o ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \ - ucmpdi2.o udivdi3.o lib1funcs.o div64.o \ + ucmpdi2.o lib1funcs.o div64.o \ io-readsb.o io-writesb.o io-readsl.o io-writesl.o ifeq ($(CONFIG_CPU_32v3),y) diff --git a/arch/arm/lib/longlong.h b/arch/arm/lib/longlong.h deleted file mode 100644 index 90ae647e4d76..000000000000 --- a/arch/arm/lib/longlong.h +++ /dev/null @@ -1,183 +0,0 @@ -/* longlong.h -- based on code from gcc-2.95.3 - - definitions for mixed size 32/64 bit arithmetic. - Copyright (C) 1991, 92, 94, 95, 96, 1997, 1998 Free Software Foundation, Inc. - - This definition file 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, or (at your option) any later version. - - This definition file 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. */ - -/* Borrowed from GCC 2.95.3, I Molton 29/07/01 */ - -#ifndef SI_TYPE_SIZE -#define SI_TYPE_SIZE 32 -#endif - -#define __BITS4 (SI_TYPE_SIZE / 4) -#define __ll_B (1L << (SI_TYPE_SIZE / 2)) -#define __ll_lowpart(t) ((u32) (t) % __ll_B) -#define __ll_highpart(t) ((u32) (t) / __ll_B) - -/* Define auxiliary asm macros. - - 1) umul_ppmm(high_prod, low_prod, multipler, multiplicand) - multiplies two u32 integers MULTIPLER and MULTIPLICAND, - and generates a two-part u32 product in HIGH_PROD and - LOW_PROD. - - 2) __umulsidi3(a,b) multiplies two u32 integers A and B, - and returns a u64 product. This is just a variant of umul_ppmm. - - 3) udiv_qrnnd(quotient, remainder, high_numerator, low_numerator, - denominator) divides a two-word unsigned integer, composed by the - integers HIGH_NUMERATOR and LOW_NUMERATOR, by DENOMINATOR and - places the quotient in QUOTIENT and the remainder in REMAINDER. - HIGH_NUMERATOR must be less than DENOMINATOR for correct operation. - If, in addition, the most significant bit of DENOMINATOR must be 1, - then the pre-processor symbol UDIV_NEEDS_NORMALIZATION is defined to 1. - - 4) sdiv_qrnnd(quotient, remainder, high_numerator, low_numerator, - denominator). Like udiv_qrnnd but the numbers are signed. The - quotient is rounded towards 0. - - 5) count_leading_zeros(count, x) counts the number of zero-bits from - the msb to the first non-zero bit. This is the number of steps X - needs to be shifted left to set the msb. Undefined for X == 0. - - 6) add_ssaaaa(high_sum, low_sum, high_addend_1, low_addend_1, - high_addend_2, low_addend_2) adds two two-word unsigned integers, - composed by HIGH_ADDEND_1 and LOW_ADDEND_1, and HIGH_ADDEND_2 and - LOW_ADDEND_2 respectively. The result is placed in HIGH_SUM and - LOW_SUM. Overflow (i.e. carry out) is not stored anywhere, and is - lost. - - 7) sub_ddmmss(high_difference, low_difference, high_minuend, - low_minuend, high_subtrahend, low_subtrahend) subtracts two - two-word unsigned integers, composed by HIGH_MINUEND_1 and - LOW_MINUEND_1, and HIGH_SUBTRAHEND_2 and LOW_SUBTRAHEND_2 - respectively. The result is placed in HIGH_DIFFERENCE and - LOW_DIFFERENCE. Overflow (i.e. carry out) is not stored anywhere, - and is lost. - - If any of these macros are left undefined for a particular CPU, - C macros are used. */ - -#if defined (__arm__) -#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ - __asm__ ("adds %1, %4, %5 \n\ - adc %0, %2, %3" \ - : "=r" ((u32) (sh)), \ - "=&r" ((u32) (sl)) \ - : "%r" ((u32) (ah)), \ - "rI" ((u32) (bh)), \ - "%r" ((u32) (al)), \ - "rI" ((u32) (bl))) -#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ - __asm__ ("subs %1, %4, %5 \n\ - sbc %0, %2, %3" \ - : "=r" ((u32) (sh)), \ - "=&r" ((u32) (sl)) \ - : "r" ((u32) (ah)), \ - "rI" ((u32) (bh)), \ - "r" ((u32) (al)), \ - "rI" ((u32) (bl))) -#define umul_ppmm(xh, xl, a, b) \ -{register u32 __t0, __t1, __t2; \ - __asm__ ("%@ Inlined umul_ppmm \n\ - mov %2, %5, lsr #16 \n\ - mov %0, %6, lsr #16 \n\ - bic %3, %5, %2, lsl #16 \n\ - bic %4, %6, %0, lsl #16 \n\ - mul %1, %3, %4 \n\ - mul %4, %2, %4 \n\ - mul %3, %0, %3 \n\ - mul %0, %2, %0 \n\ - adds %3, %4, %3 \n\ - addcs %0, %0, #65536 \n\ - adds %1, %1, %3, lsl #16 \n\ - adc %0, %0, %3, lsr #16" \ - : "=&r" ((u32) (xh)), \ - "=r" ((u32) (xl)), \ - "=&r" (__t0), "=&r" (__t1), "=r" (__t2) \ - : "r" ((u32) (a)), \ - "r" ((u32) (b)));} -#define UMUL_TIME 20 -#define UDIV_TIME 100 -#endif /* __arm__ */ - -#define __umulsidi3(u, v) \ - ({DIunion __w; \ - umul_ppmm (__w.s.high, __w.s.low, u, v); \ - __w.ll; }) - -#define __udiv_qrnnd_c(q, r, n1, n0, d) \ - do { \ - u32 __d1, __d0, __q1, __q0; \ - u32 __r1, __r0, __m; \ - __d1 = __ll_highpart (d); \ - __d0 = __ll_lowpart (d); \ - \ - __r1 = (n1) % __d1; \ - __q1 = (n1) / __d1; \ - __m = (u32) __q1 * __d0; \ - __r1 = __r1 * __ll_B | __ll_highpart (n0); \ - if (__r1 < __m) \ - { \ - __q1--, __r1 += (d); \ - if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */\ - if (__r1 < __m) \ - __q1--, __r1 += (d); \ - } \ - __r1 -= __m; \ - \ - __r0 = __r1 % __d1; \ - __q0 = __r1 / __d1; \ - __m = (u32) __q0 * __d0; \ - __r0 = __r0 * __ll_B | __ll_lowpart (n0); \ - if (__r0 < __m) \ - { \ - __q0--, __r0 += (d); \ - if (__r0 >= (d)) \ - if (__r0 < __m) \ - __q0--, __r0 += (d); \ - } \ - __r0 -= __m; \ - \ - (q) = (u32) __q1 * __ll_B | __q0; \ - (r) = __r0; \ - } while (0) - -#define UDIV_NEEDS_NORMALIZATION 1 -#define udiv_qrnnd __udiv_qrnnd_c - -#define count_leading_zeros(count, x) \ - do { \ - u32 __xr = (x); \ - u32 __a; \ - \ - if (SI_TYPE_SIZE <= 32) \ - { \ - __a = __xr < ((u32)1<<2*__BITS4) \ - ? (__xr < ((u32)1<<__BITS4) ? 0 : __BITS4) \ - : (__xr < ((u32)1<<3*__BITS4) ? 2*__BITS4 : 3*__BITS4); \ - } \ - else \ - { \ - for (__a = SI_TYPE_SIZE - 8; __a > 0; __a -= 8) \ - if (((__xr >> __a) & 0xff) != 0) \ - break; \ - } \ - \ - (count) = SI_TYPE_SIZE - (__clz_tab[__xr >> __a] + __a); \ - } while (0) diff --git a/arch/arm/lib/udivdi3.c b/arch/arm/lib/udivdi3.c deleted file mode 100644 index e343be4c6642..000000000000 --- a/arch/arm/lib/udivdi3.c +++ /dev/null @@ -1,222 +0,0 @@ -/* More subroutines needed by GCC output code on some machines. */ -/* Compile this one with gcc. */ -/* Copyright (C) 1989, 92-98, 1999 Free Software Foundation, Inc. - -This file is part of GNU CC. - -GNU CC 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, or (at your option) -any later version. - -GNU CC 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 GNU CC; see the file COPYING. If not, write to -the Free Software Foundation, 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ - -/* As a special exception, if you link this library with other files, - some of which are compiled with GCC, to produce an executable, - this library does not by itself cause the resulting executable - to be covered by the GNU General Public License. - This exception does not however invalidate any other reasons why - the executable file might be covered by the GNU General Public License. - */ -/* support functions required by the kernel. based on code from gcc-2.95.3 */ -/* I Molton 29/07/01 */ - -#include "gcclib.h" -#include "longlong.h" - -static const u8 __clz_tab[] = { - 0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, - 5, 5, 5, 5, 5, 5, 5, 5, - 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, - 6, 6, 6, 6, 6, 6, 6, 6, - 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, - 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, - 8, 8, 8, 8, 8, 8, 8, 8, - 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, - 8, 8, 8, 8, 8, 8, 8, 8, - 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, - 8, 8, 8, 8, 8, 8, 8, 8, - 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, - 8, 8, 8, 8, 8, 8, 8, 8, -}; - -u64 __udivmoddi4(u64 n, u64 d, u64 * rp) -{ - DIunion ww; - DIunion nn, dd; - DIunion rr; - u32 d0, d1, n0, n1, n2; - u32 q0, q1; - u32 b, bm; - - nn.ll = n; - dd.ll = d; - - d0 = dd.s.low; - d1 = dd.s.high; - n0 = nn.s.low; - n1 = nn.s.high; - - if (d1 == 0) { - if (d0 > n1) { - /* 0q = nn / 0D */ - - count_leading_zeros(bm, d0); - - if (bm != 0) { - /* Normalize, i.e. make the most significant bit of the - denominator set. */ - - d0 = d0 << bm; - n1 = (n1 << bm) | (n0 >> (SI_TYPE_SIZE - bm)); - n0 = n0 << bm; - } - - udiv_qrnnd(q0, n0, n1, n0, d0); - q1 = 0; - - /* Remainder in n0 >> bm. */ - } else { - /* qq = NN / 0d */ - - if (d0 == 0) - d0 = 1 / d0; /* Divide intentionally by zero. */ - - count_leading_zeros(bm, d0); - - if (bm == 0) { - /* From (n1 >= d0) /\ (the most significant bit of d0 is set), - conclude (the most significant bit of n1 is set) /\ (the - leading quotient digit q1 = 1). - - This special case is necessary, not an optimization. - (Shifts counts of SI_TYPE_SIZE are undefined.) */ - - n1 -= d0; - q1 = 1; - } else { - /* Normalize. */ - - b = SI_TYPE_SIZE - bm; - - d0 = d0 << bm; - n2 = n1 >> b; - n1 = (n1 << bm) | (n0 >> b); - n0 = n0 << bm; - - udiv_qrnnd(q1, n1, n2, n1, d0); - } - - /* n1 != d0... */ - - udiv_qrnnd(q0, n0, n1, n0, d0); - - /* Remainder in n0 >> bm. */ - } - - if (rp != 0) { - rr.s.low = n0 >> bm; - rr.s.high = 0; - *rp = rr.ll; - } - } else { - if (d1 > n1) { - /* 00 = nn / DD */ - - q0 = 0; - q1 = 0; - - /* Remainder in n1n0. */ - if (rp != 0) { - rr.s.low = n0; - rr.s.high = n1; - *rp = rr.ll; - } - } else { - /* 0q = NN / dd */ - - count_leading_zeros(bm, d1); - if (bm == 0) { - /* From (n1 >= d1) /\ (the most significant bit of d1 is set), - conclude (the most significant bit of n1 is set) /\ (the - quotient digit q0 = 0 or 1). - - This special case is necessary, not an optimization. */ - - /* The condition on the next line takes advantage of that - n1 >= d1 (true due to program flow). */ - if (n1 > d1 || n0 >= d0) { - q0 = 1; - sub_ddmmss(n1, n0, n1, n0, d1, d0); - } else - q0 = 0; - - q1 = 0; - - if (rp != 0) { - rr.s.low = n0; - rr.s.high = n1; - *rp = rr.ll; - } - } else { - u32 m1, m0; - /* Normalize. */ - - b = SI_TYPE_SIZE - bm; - - d1 = (d1 << bm) | (d0 >> b); - d0 = d0 << bm; - n2 = n1 >> b; - n1 = (n1 << bm) | (n0 >> b); - n0 = n0 << bm; - - udiv_qrnnd(q0, n1, n2, n1, d1); - umul_ppmm(m1, m0, q0, d0); - - if (m1 > n1 || (m1 == n1 && m0 > n0)) { - q0--; - sub_ddmmss(m1, m0, m1, m0, d1, d0); - } - - q1 = 0; - - /* Remainder in (n1n0 - m1m0) >> bm. */ - if (rp != 0) { - sub_ddmmss(n1, n0, n1, n0, m1, m0); - rr.s.low = (n1 << b) | (n0 >> bm); - rr.s.high = n1 >> bm; - *rp = rr.ll; - } - } - } - } - - ww.s.low = q0; - ww.s.high = q1; - return ww.ll; -} - -u64 __udivdi3(u64 n, u64 d) -{ - return __udivmoddi4(n, d, (u64 *) 0); -} - -u64 __umoddi3(u64 u, u64 v) -{ - u64 w; - - (void)__udivmoddi4(u, v, &w); - - return w; -} diff --git a/drivers/net/arm/etherh.c b/drivers/net/arm/etherh.c index 2e28c201dcc0..942a2819576c 100644 --- a/drivers/net/arm/etherh.c +++ b/drivers/net/arm/etherh.c @@ -68,7 +68,6 @@ struct etherh_priv { void __iomem *dma_base; unsigned int id; void __iomem *ctrl_port; - void __iomem *base; unsigned char ctrl; u32 supported; }; @@ -178,7 +177,7 @@ etherh_setif(struct net_device *dev) switch (etherh_priv(dev)->id) { case PROD_I3_ETHERLAN600: case PROD_I3_ETHERLAN600A: - addr = etherh_priv(dev)->base + EN0_RCNTHI; + addr = (void *)dev->base_addr + EN0_RCNTHI; switch (dev->if_port) { case IF_PORT_10BASE2: @@ -219,7 +218,7 @@ etherh_getifstat(struct net_device *dev) switch (etherh_priv(dev)->id) { case PROD_I3_ETHERLAN600: case PROD_I3_ETHERLAN600A: - addr = etherh_priv(dev)->base + EN0_RCNTHI; + addr = (void *)dev->base_addr + EN0_RCNTHI; switch (dev->if_port) { case IF_PORT_10BASE2: stat = 1; @@ -282,7 +281,7 @@ static void etherh_reset(struct net_device *dev) { struct ei_device *ei_local = netdev_priv(dev); - void __iomem *addr = etherh_priv(dev)->base; + void __iomem *addr = (void *)dev->base_addr; writeb(E8390_NODMA+E8390_PAGE0+E8390_STOP, addr); @@ -328,7 +327,7 @@ etherh_block_output (struct net_device *dev, int count, const unsigned char *buf ei_local->dmaing = 1; - addr = etherh_priv(dev)->base; + addr = (void *)dev->base_addr; dma_base = etherh_priv(dev)->dma_base; count = (count + 1) & ~1; @@ -388,7 +387,7 @@ etherh_block_input (struct net_device *dev, int count, struct sk_buff *skb, int ei_local->dmaing = 1; - addr = etherh_priv(dev)->base; + addr = (void *)dev->base_addr; dma_base = etherh_priv(dev)->dma_base; buf = skb->data; @@ -428,7 +427,7 @@ etherh_get_header (struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_p ei_local->dmaing = 1; - addr = etherh_priv(dev)->base; + addr = (void *)dev->base_addr; dma_base = etherh_priv(dev)->dma_base; writeb (E8390_NODMA | E8390_PAGE0 | E8390_START, addr + E8390_CMD); @@ -697,8 +696,7 @@ etherh_probe(struct expansion_card *ec, const struct ecard_id *id) eh->ctrl_port = eh->ioc_fast; } - eh->base = eh->memc + data->ns8390_offset; - dev->base_addr = (unsigned long)eh->base; + dev->base_addr = (unsigned long)eh->memc + data->ns8390_offset; eh->dma_base = eh->memc + data->dataport_offset; eh->ctrl_port += data->ctrlport_offset; -- cgit v1.2.3 From 20f720ccce8864583365d844d48d3fe8d0d171ad Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 29 Jun 2005 18:26:19 +0100 Subject: [PATCH] ARM: Remove nmi_tick from integrator platforms The nmi watchdog code hasn't been merged for this platform yet. Signed-off-by: Russell King --- arch/arm/mach-integrator/core.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm/mach-integrator/core.c b/arch/arm/mach-integrator/core.c index 797c7fddaa0d..dacbf504dae2 100644 --- a/arch/arm/mach-integrator/core.c +++ b/arch/arm/mach-integrator/core.c @@ -215,7 +215,6 @@ integrator_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) * primary CPU */ if (hard_smp_processor_id() == 0) { - nmi_tick(); timer_tick(regs); #ifdef CONFIG_SMP smp_send_timer(); -- cgit v1.2.3 From b3402cf50efead37dd9553b90fbf1486e09fb78e Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Wed, 29 Jun 2005 19:59:48 +0100 Subject: [PATCH] ARM: 2771/1: Dynamic Tick support for OMAP, take 4 Patch from Tony Lindgren This patch adds support for Dynamic Tick Timer for OMAP. This patch is an updated version of ARM patch 2642/1 to make it work with the already integrated generic ARM dyntick support. Signed-off-by: Tony Lindgren Signed-off-by: Russell King --- arch/arm/mach-omap/pm.c | 16 ++++++++++------ arch/arm/mach-omap/time.c | 44 ++++++++++++++++++++++++++++++++++++++++++-- 2 files changed, 52 insertions(+), 8 deletions(-) diff --git a/arch/arm/mach-omap/pm.c b/arch/arm/mach-omap/pm.c index 00fac155df2a..6b03ccdc1e92 100644 --- a/arch/arm/mach-omap/pm.c +++ b/arch/arm/mach-omap/pm.c @@ -41,7 +41,9 @@ #include #include +#include #include + #include #include #include @@ -80,13 +82,13 @@ void omap_pm_idle(void) return; } mask32 = omap_readl(ARM_SYSST); - local_fiq_enable(); - local_irq_enable(); -#if defined(CONFIG_OMAP_32K_TIMER) && defined(CONFIG_NO_IDLE_HZ) - /* Override timer to use VST for the next cycle */ - omap_32k_timer_next_vst_interrupt(); -#endif + /* + * Since an interrupt may set up a timer, we don't want to + * reprogram the hardware timer with interrupts enabled. + * Re-enable interrupts only after returning from idle. + */ + timer_dyn_reprogram(); if ((mask32 & DSP_IDLE) == 0) { __asm__ volatile ("mcr p15, 0, r0, c7, c0, 4"); @@ -102,6 +104,8 @@ void omap_pm_idle(void) func_ptr(); } + local_fiq_enable(); + local_irq_enable(); } /* diff --git a/arch/arm/mach-omap/time.c b/arch/arm/mach-omap/time.c index 589e8b2740dd..dd34e9f4c413 100644 --- a/arch/arm/mach-omap/time.c +++ b/arch/arm/mach-omap/time.c @@ -4,7 +4,7 @@ * OMAP Timers * * Copyright (C) 2004 Nokia Corporation - * Partial timer rewrite and additional VST timer support by + * Partial timer rewrite and additional dynamic tick timer support by * Tony Lindgen and * Tuukka Tikkanen * @@ -261,7 +261,6 @@ unsigned long long sched_clock(void) * so with HZ = 100, TVR = 327.68. */ #define OMAP_32K_TIMER_TICK_PERIOD ((32768 / HZ) - 1) -#define MAX_SKIP_JIFFIES 25 #define TIMER_32K_SYNCHRONIZED 0xfffbc410 #define JIFFIES_TO_HW_TICKS(nr_jiffies, clock_rate) \ @@ -347,6 +346,42 @@ static irqreturn_t omap_32k_timer_interrupt(int irq, void *dev_id, return IRQ_HANDLED; } +#ifdef CONFIG_NO_IDLE_HZ +/* + * Programs the next timer interrupt needed. Called when dynamic tick is + * enabled, and to reprogram the ticks to skip from pm_idle. Note that + * we can keep the timer continuous, and don't need to set it to run in + * one-shot mode. This is because the timer will get reprogrammed again + * after next interrupt. + */ +void omap_32k_timer_reprogram(unsigned long next_tick) +{ + omap_32k_timer_start(JIFFIES_TO_HW_TICKS(next_tick, 32768) + 1); +} + +static struct irqaction omap_32k_timer_irq; +extern struct timer_update_handler timer_update; + +static int omap_32k_timer_enable_dyn_tick(void) +{ + /* No need to reprogram timer, just use the next interrupt */ + return 0; +} + +static int omap_32k_timer_disable_dyn_tick(void) +{ + omap_32k_timer_start(OMAP_32K_TIMER_TICK_PERIOD); + return 0; +} + +static struct dyn_tick_timer omap_dyn_tick_timer = { + .enable = omap_32k_timer_enable_dyn_tick, + .disable = omap_32k_timer_disable_dyn_tick, + .reprogram = omap_32k_timer_reprogram, + .handler = omap_32k_timer_interrupt, +}; +#endif /* CONFIG_NO_IDLE_HZ */ + static struct irqaction omap_32k_timer_irq = { .name = "32KHz timer", .flags = SA_INTERRUPT | SA_TIMER, @@ -355,6 +390,11 @@ static struct irqaction omap_32k_timer_irq = { static __init void omap_init_32k_timer(void) { + +#ifdef CONFIG_NO_IDLE_HZ + omap_timer.dyn_tick = &omap_dyn_tick_timer; +#endif + setup_irq(INT_OS_TIMER, &omap_32k_timer_irq); omap_timer.offset = omap_32k_timer_gettimeoffset; omap_32k_last_tick = omap_32k_sync_timer_read(); -- cgit v1.2.3 From 438a76167959061e371025f727fabec2ad9e70a7 Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 29 Jun 2005 23:01:02 +0100 Subject: [PATCH] ARM: Fix VFP to use do_div() VFP used __divdi3 64-bit division needlessly. Convert it to use our 64-bit by 32-bit division instead. Signed-off-by: Russell King --- arch/arm/vfp/vfp.h | 15 +++++++++++++-- arch/arm/vfp/vfpdouble.c | 2 ++ arch/arm/vfp/vfpsingle.c | 14 ++++++++++++-- 3 files changed, 27 insertions(+), 4 deletions(-) diff --git a/arch/arm/vfp/vfp.h b/arch/arm/vfp/vfp.h index 55a02bc994a3..4b97950984e9 100644 --- a/arch/arm/vfp/vfp.h +++ b/arch/arm/vfp/vfp.h @@ -117,7 +117,13 @@ static inline u64 vfp_estimate_div128to64(u64 nh, u64 nl, u64 m) if (nh >= m) return ~0ULL; mh = m >> 32; - z = (mh << 32 <= nh) ? 0xffffffff00000000ULL : (nh / mh) << 32; + if (mh << 32 <= nh) { + z = 0xffffffff00000000ULL; + } else { + z = nh; + do_div(z, mh); + z <<= 32; + } mul64to128(&termh, &terml, m, z); sub128(&remh, &reml, nh, nl, termh, terml); ml = m << 32; @@ -126,7 +132,12 @@ static inline u64 vfp_estimate_div128to64(u64 nh, u64 nl, u64 m) add128(&remh, &reml, remh, reml, mh, ml); } remh = (remh << 32) | (reml >> 32); - z |= (mh << 32 <= remh) ? 0xffffffff : remh / mh; + if (mh << 32 <= remh) { + z |= 0xffffffff; + } else { + do_div(remh, mh); + z |= remh; + } return z; } diff --git a/arch/arm/vfp/vfpdouble.c b/arch/arm/vfp/vfpdouble.c index fa3053e84db5..b801cd66b6ea 100644 --- a/arch/arm/vfp/vfpdouble.c +++ b/arch/arm/vfp/vfpdouble.c @@ -32,6 +32,8 @@ */ #include #include + +#include #include #include diff --git a/arch/arm/vfp/vfpsingle.c b/arch/arm/vfp/vfpsingle.c index 6849fe35cb2e..14dd696ddeb1 100644 --- a/arch/arm/vfp/vfpsingle.c +++ b/arch/arm/vfp/vfpsingle.c @@ -32,6 +32,8 @@ */ #include #include + +#include #include #include @@ -303,7 +305,11 @@ u32 vfp_estimate_sqrt_significand(u32 exponent, u32 significand) if (z <= a) return (s32)a >> 1; } - return (u32)(((u64)a << 31) / z) + (z >> 1); + { + u64 v = (u64)a << 31; + do_div(v, z); + return v + (z >> 1); + } } static u32 vfp_single_fsqrt(int sd, int unused, s32 m, u32 fpscr) @@ -1107,7 +1113,11 @@ static u32 vfp_single_fdiv(int sd, int sn, s32 m, u32 fpscr) vsn.significand >>= 1; vsd.exponent++; } - vsd.significand = ((u64)vsn.significand << 32) / vsm.significand; + { + u64 significand = (u64)vsn.significand << 32; + do_div(significand, vsm.significand); + vsd.significand = significand; + } if ((vsd.significand & 0x3f) == 0) vsd.significand |= ((u64)vsm.significand * vsd.significand != (u64)vsn.significand << 32); -- cgit v1.2.3 From da41119af78864d27ccbf505949df788d5e8aaf5 Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 29 Jun 2005 23:02:02 +0100 Subject: [PATCH] ARM: Don't force SIGFPE We were forcing SIGFPE on to a user program for no good reason. Use send_sig_info() instead. Signed-off-by: Russell King --- arch/arm/vfp/vfpmodule.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c index 3aeedd2afc70..22f3da4e0829 100644 --- a/arch/arm/vfp/vfpmodule.c +++ b/arch/arm/vfp/vfpmodule.c @@ -89,7 +89,7 @@ void vfp_raise_sigfpe(unsigned int sicode, struct pt_regs *regs) current->thread.error_code = 0; current->thread.trap_no = 6; - force_sig_info(SIGFPE, &info, current); + send_sig_info(SIGFPE, &info, current); } static void vfp_panic(char *reason) -- cgit v1.2.3