diff options
Diffstat (limited to 'arch/arm')
96 files changed, 219 insertions, 1709 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index a48aecc17ea..7d809b7e050 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -186,6 +186,9 @@ config GENERIC_ISA_DMA config FIQ bool +config NEED_RET_TO_USER + bool + config ARCH_MTD_XIP bool @@ -479,6 +482,7 @@ config ARCH_IOP13XX select ARCH_SUPPORTS_MSI select VMSPLIT_1G select NEED_MACH_MEMORY_H + select NEED_RET_TO_USER help Support for Intel's IOP13XX (XScale) family of processors. @@ -486,6 +490,7 @@ config ARCH_IOP32X bool "IOP32x-based" depends on MMU select CPU_XSCALE + select NEED_RET_TO_USER select PLAT_IOP select PCI select ARCH_REQUIRE_GPIOLIB @@ -497,6 +502,7 @@ config ARCH_IOP33X bool "IOP33x-based" depends on MMU select CPU_XSCALE + select NEED_RET_TO_USER select PLAT_IOP select PCI select ARCH_REQUIRE_GPIOLIB diff --git a/arch/arm/include/asm/hardware/entry-macro-iomd.S b/arch/arm/include/asm/hardware/entry-macro-iomd.S index e0af4983723..8c215acd9b5 100644 --- a/arch/arm/include/asm/hardware/entry-macro-iomd.S +++ b/arch/arm/include/asm/hardware/entry-macro-iomd.S @@ -11,14 +11,6 @@ /* IOC / IOMD based hardware */ #include <asm/hardware/iomd.h> - .macro disable_fiq - mov r12, #ioc_base_high - .if ioc_base_low - orr r12, r12, #ioc_base_low - .endif - strb r12, [r12, #0x38] @ Disable FIQ register - .endm - .macro get_irqnr_and_base, irqnr, irqstat, base, tmp ldrb \irqstat, [\base, #IOMD_IRQREQB] @ get high priority first ldr \tmp, =irq_prio_h diff --git a/arch/arm/include/asm/tlb.h b/arch/arm/include/asm/tlb.h index 5d3ed7e3856..314d4664eae 100644 --- a/arch/arm/include/asm/tlb.h +++ b/arch/arm/include/asm/tlb.h @@ -198,7 +198,15 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, unsigned long addr) { pgtable_page_dtor(pte); - tlb_add_flush(tlb, addr); + + /* + * With the classic ARM MMU, a pte page has two corresponding pmd + * entries, each covering 1MB. + */ + addr &= PMD_MASK; + tlb_add_flush(tlb, addr + SZ_1M - PAGE_SIZE); + tlb_add_flush(tlb, addr + SZ_1M); + tlb_remove_page(tlb, pte); } diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index 3a456c6c700..22f0ed324f3 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -19,7 +19,9 @@ #include <asm/glue-df.h> #include <asm/glue-pf.h> #include <asm/vfpmacros.h> +#ifndef CONFIG_MULTI_IRQ_HANDLER #include <mach/entry-macro.S> +#endif #include <asm/thread_notify.h> #include <asm/unwind.h> #include <asm/unistd.h> @@ -790,7 +792,7 @@ __kuser_cmpxchg64: @ 0xffff0f60 smp_dmb arm rsbs r0, r3, #0 @ set returned val and C flag ldmfd sp!, {r4, r5, r6, r7} - bx lr + usr_ret lr #elif !defined(CONFIG_SMP) @@ -1101,7 +1103,6 @@ __stubs_start: * get out of that mode without clobbering one register. */ vector_fiq: - disable_fiq subs pc, lr, #4 /*============================================================================= diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index 9fd0ba90c1d..54ee265dd81 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -10,9 +10,15 @@ #include <asm/unistd.h> #include <asm/ftrace.h> -#include <mach/entry-macro.S> #include <asm/unwind.h> +#ifdef CONFIG_NEED_RET_TO_USER +#include <mach/entry-macro.S> +#else + .macro arch_ret_to_user, tmp1, tmp2 + .endm +#endif + #include "entry-header.S" diff --git a/arch/arm/kernel/perf_event_v7.c b/arch/arm/kernel/perf_event_v7.c index 460bbbb6b88..6933244c68f 100644 --- a/arch/arm/kernel/perf_event_v7.c +++ b/arch/arm/kernel/perf_event_v7.c @@ -469,6 +469,20 @@ static const unsigned armv7_a5_perf_cache_map[PERF_COUNT_HW_CACHE_MAX] [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, }, }, + [C(NODE)] = { + [C(OP_READ)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + [C(OP_WRITE)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + [C(OP_PREFETCH)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + }, }; /* @@ -579,6 +593,20 @@ static const unsigned armv7_a15_perf_cache_map[PERF_COUNT_HW_CACHE_MAX] [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, }, }, + [C(NODE)] = { + [C(OP_READ)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + [C(OP_WRITE)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + [C(OP_PREFETCH)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + }, }; /* diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c index e1d5e1929fb..e33870ff0ac 100644 --- a/arch/arm/kernel/ptrace.c +++ b/arch/arm/kernel/ptrace.c @@ -699,10 +699,13 @@ static int vfp_set(struct task_struct *target, { int ret; struct thread_info *thread = task_thread_info(target); - struct vfp_hard_struct new_vfp = thread->vfpstate.hard; + struct vfp_hard_struct new_vfp; const size_t user_fpregs_offset = offsetof(struct user_vfp, fpregs); const size_t user_fpscr_offset = offsetof(struct user_vfp, fpscr); + vfp_sync_hwstate(thread); + new_vfp = thread->vfpstate.hard; + ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &new_vfp.fpregs, user_fpregs_offset, @@ -723,9 +726,8 @@ static int vfp_set(struct task_struct *target, if (ret) return ret; - vfp_sync_hwstate(thread); - thread->vfpstate.hard = new_vfp; vfp_flush_hwstate(thread); + thread->vfpstate.hard = new_vfp; return 0; } diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c index 0340224cf73..9e617bd4a14 100644 --- a/arch/arm/kernel/signal.c +++ b/arch/arm/kernel/signal.c @@ -227,6 +227,8 @@ static int restore_vfp_context(struct vfp_sigframe __user *frame) if (magic != VFP_MAGIC || size != VFP_STORAGE_SIZE) return -EINVAL; + vfp_flush_hwstate(thread); + /* * Copy the floating point registers. There can be unused * registers see asm/hwcap.h for details. @@ -251,9 +253,6 @@ static int restore_vfp_context(struct vfp_sigframe __user *frame) __get_user_error(h->fpinst, &frame->ufp_exc.fpinst, err); __get_user_error(h->fpinst2, &frame->ufp_exc.fpinst2, err); - if (!err) - vfp_flush_hwstate(thread); - return err ? -EFAULT : 0; } diff --git a/arch/arm/mach-at91/include/mach/entry-macro.S b/arch/arm/mach-at91/include/mach/entry-macro.S index 423eea0ed74..903bf205a33 100644 --- a/arch/arm/mach-at91/include/mach/entry-macro.S +++ b/arch/arm/mach-at91/include/mach/entry-macro.S @@ -13,17 +13,11 @@ #include <mach/hardware.h> #include <mach/at91_aic.h> - .macro disable_fiq - .endm - .macro get_irqnr_preamble, base, tmp ldr \base, =at91_aic_base @ base virtual address of AIC peripheral ldr \base, [\base] .endm - .macro arch_ret_to_user, tmp1, tmp2 - .endm - .macro get_irqnr_and_base, irqnr, irqstat, base, tmp ldr \irqnr, [\base, #AT91_AIC_IVR] @ read IRQ vector register: de-asserts nIRQ to processor (and clears interrupt) ldr \irqstat, [\base, #AT91_AIC_ISR] @ read interrupt source number diff --git a/arch/arm/mach-bcmring/arch.c b/arch/arm/mach-bcmring/arch.c index 9e5e7552498..45c97b1ee9b 100644 --- a/arch/arm/mach-bcmring/arch.c +++ b/arch/arm/mach-bcmring/arch.c @@ -194,6 +194,6 @@ MACHINE_START(BCMRING, "BCMRING") .init_early = bcmring_init_early, .init_irq = bcmring_init_irq, .timer = &bcmring_timer, - .init_machine = bcmring_init_machine + .init_machine = bcmring_init_machine, .restart = bcmring_restart, MACHINE_END diff --git a/arch/arm/mach-bcmring/dma.c b/arch/arm/mach-bcmring/dma.c index 1a1a27dd565..1024396797e 100644 --- a/arch/arm/mach-bcmring/dma.c +++ b/arch/arm/mach-bcmring/dma.c @@ -33,17 +33,11 @@ #include <mach/timer.h> -#include <linux/mm.h> #include <linux/pfn.h> #include <linux/atomic.h> #include <linux/sched.h> #include <mach/dma.h> -/* I don't quite understand why dc4 fails when this is set to 1 and DMA is enabled */ -/* especially since dc4 doesn't use kmalloc'd memory. */ - -#define ALLOW_MAP_OF_KMALLOC_MEMORY 0 - /* ---- Public Variables ------------------------------------------------- */ /* ---- Private Constants and Types -------------------------------------- */ @@ -53,24 +47,12 @@ #define CONTROLLER_FROM_HANDLE(handle) (((handle) >> 4) & 0x0f) #define CHANNEL_FROM_HANDLE(handle) ((handle) & 0x0f) -#define DMA_MAP_DEBUG 0 - -#if DMA_MAP_DEBUG -# define DMA_MAP_PRINT(fmt, args...) printk("%s: " fmt, __func__, ## args) -#else -# define DMA_MAP_PRINT(fmt, args...) -#endif /* ---- Private Variables ------------------------ |