From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758222Ab2CLXsG (ORCPT ); Mon, 12 Mar 2012 19:48:06 -0400 Received: from mx1.redhat.com ([209.132.183.28]:10564 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758090Ab2CLXhF (ORCPT ); Mon, 12 Mar 2012 19:37:05 -0400 Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells Subject: [PATCH 03/35] Disintegrate asm/system.h for ARM [ver #2] To: paul.gortmaker@windriver.com, hpa@zytor.com Cc: torvalds@linux-foundation.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, arnd@arndb.de, David Howells , linux-arm-kernel@lists.infradead.org Date: Mon, 12 Mar 2012 23:36:37 +0000 Message-ID: <20120312233636.13888.21843.stgit@warthog.procyon.org.uk> In-Reply-To: <20120312233602.13888.27659.stgit@warthog.procyon.org.uk> References: <20120312233602.13888.27659.stgit@warthog.procyon.org.uk> User-Agent: StGIT/0.14.3 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: David Howells cc: linux-arm-kernel@lists.infradead.org --- arch/arm/common/via82c505.c | 1 arch/arm/include/asm/atomic.h | 4 arch/arm/include/asm/barrier.h | 64 +++ arch/arm/include/asm/bitops.h | 2 arch/arm/include/asm/bug.h | 30 ++ arch/arm/include/asm/cmpxchg.h | 295 +++++++++++++++ arch/arm/include/asm/compiler.h | 15 + arch/arm/include/asm/cr_reg.h | 85 ++++ arch/arm/include/asm/div64.h | 2 arch/arm/include/asm/dma.h | 1 arch/arm/include/asm/domain.h | 2 arch/arm/include/asm/exec.h | 6 arch/arm/include/asm/io.h | 1 arch/arm/include/asm/mmu.h | 7 arch/arm/include/asm/processor.h | 1 arch/arm/include/asm/switch_to.h | 18 + arch/arm/include/asm/system.h | 552 ----------------------------- arch/arm/include/asm/system_info.h | 27 + arch/arm/include/asm/system_misc.h | 35 ++ arch/arm/include/asm/uaccess.h | 2 arch/arm/kernel/armksyms.c | 1 arch/arm/kernel/elf.c | 1 arch/arm/kernel/entry-armv.S | 1 arch/arm/kernel/fiq.c | 1 arch/arm/kernel/head-nommu.S | 1 arch/arm/kernel/head.S | 2 arch/arm/kernel/hw_breakpoint.c | 1 arch/arm/kernel/irq.c | 1 arch/arm/kernel/machine_kexec.c | 1 arch/arm/kernel/process.c | 1 arch/arm/kernel/ptrace.c | 1 arch/arm/kernel/setup.c | 4 arch/arm/kernel/sleep.S | 1 arch/arm/kernel/traps.c | 2 arch/arm/mach-clps711x/p720t-leds.c | 1 arch/arm/mach-ebsa110/core.c | 1 arch/arm/mach-ebsa110/leds.c | 1 arch/arm/mach-footbridge/dc21285.c | 1 arch/arm/mach-footbridge/ebsa285-leds.c | 1 arch/arm/mach-footbridge/netwinder-leds.c | 1 arch/arm/mach-imx/dma-v1.c | 1 arch/arm/mach-integrator/core.c | 1 arch/arm/mach-integrator/leds.c | 1 arch/arm/mach-integrator/pci.c | 1 arch/arm/mach-integrator/pci_v3.c | 1 arch/arm/mach-iop33x/uart.c | 1 arch/arm/mach-ixp2000/core.c | 1 arch/arm/mach-ixp2000/enp2611.c | 1 arch/arm/mach-ixp2000/ixdp2400.c | 1 arch/arm/mach-ixp2000/ixdp2800.c | 1 arch/arm/mach-ixp2000/ixdp2x00.c | 1 arch/arm/mach-ixp2000/ixdp2x01.c | 1 arch/arm/mach-ixp2000/pci.c | 1 arch/arm/mach-ixp23xx/core.c | 1 arch/arm/mach-ixp23xx/espresso.c | 1 arch/arm/mach-ixp23xx/ixdp2351.c | 1 arch/arm/mach-ixp23xx/pci.c | 1 arch/arm/mach-ixp23xx/roadrunner.c | 1 arch/arm/mach-ixp4xx/common-pci.c | 1 arch/arm/mach-ixp4xx/goramo_mlr.c | 1 arch/arm/mach-msm/board-sapphire.c | 1 arch/arm/mach-mxs/system.c | 1 arch/arm/mach-omap1/leds-h2p2-debug.c | 1 arch/arm/mach-omap1/leds-innovator.c | 1 arch/arm/mach-omap1/leds-osk.c | 1 arch/arm/mach-omap1/mux.c | 1 arch/arm/mach-omap1/time.c | 1 arch/arm/mach-omap1/timer32k.c | 1 arch/arm/mach-omap2/mux.c | 1 arch/arm/mach-omap2/omap-mpuss-lowpower.c | 1 arch/arm/mach-omap2/sleep44xx.S | 1 arch/arm/mach-orion5x/ls-chl-setup.c | 1 arch/arm/mach-orion5x/ls_hgl-setup.c | 1 arch/arm/mach-orion5x/lsmini-setup.c | 1 arch/arm/mach-pnx4008/core.c | 1 arch/arm/mach-pnx4008/dma.c | 1 arch/arm/mach-pnx4008/irq.c | 1 arch/arm/mach-pnx4008/time.c | 1 arch/arm/mach-pxa/corgi.c | 1 arch/arm/mach-pxa/generic.c | 1 arch/arm/mach-pxa/leds-idp.c | 1 arch/arm/mach-pxa/leds-lubbock.c | 1 arch/arm/mach-pxa/leds-mainstone.c | 1 arch/arm/mach-pxa/poodle.c | 1 arch/arm/mach-realview/core.c | 1 arch/arm/mach-sa1100/dma.c | 1 arch/arm/mach-sa1100/generic.c | 1 arch/arm/mach-sa1100/leds-assabet.c | 1 arch/arm/mach-sa1100/leds-badge4.c | 1 arch/arm/mach-sa1100/leds-cerf.c | 1 arch/arm/mach-sa1100/leds-hackkit.c | 1 arch/arm/mach-sa1100/leds-lart.c | 1 arch/arm/mach-sa1100/pm.c | 1 arch/arm/mach-shark/leds.c | 1 arch/arm/mach-shmobile/cpuidle.c | 1 arch/arm/mach-shmobile/pm-r8a7779.c | 1 arch/arm/mach-shmobile/pm-sh7372.c | 1 arch/arm/mach-shmobile/suspend.c | 1 arch/arm/mach-tegra/cpu-tegra.c | 1 arch/arm/mach-versatile/core.c | 1 arch/arm/mach-versatile/pci.c | 1 arch/arm/mach-vexpress/hotplug.c | 1 arch/arm/mm/alignment.c | 3 arch/arm/mm/cache-xsc3l2.c | 1 arch/arm/mm/fault.c | 3 arch/arm/mm/flush.c | 1 arch/arm/mm/idmap.c | 1 arch/arm/mm/ioremap.c | 2 arch/arm/mm/mmu.c | 2 arch/arm/mm/pgd.c | 1 arch/arm/mm/proc-fa526.S | 1 arch/arm/nwfpe/fpa11.c | 1 arch/arm/plat-iop/i2c.c | 1 arch/arm/plat-iop/pci.c | 1 arch/arm/plat-mxc/system.c | 1 arch/arm/plat-omap/debug-leds.c | 1 arch/arm/plat-omap/dma.c | 1 arch/arm/plat-omap/mux.c | 1 arch/arm/plat-pxa/dma.c | 1 arch/arm/plat-s3c24xx/dma.c | 1 arch/arm/plat-samsung/cpu.c | 1 arch/arm/plat-samsung/time.c | 1 arch/arm/vfp/vfpmodule.c | 2 123 files changed, 617 insertions(+), 648 deletions(-) create mode 100644 arch/arm/include/asm/barrier.h create mode 100644 arch/arm/include/asm/cmpxchg.h create mode 100644 arch/arm/include/asm/compiler.h create mode 100644 arch/arm/include/asm/cr_reg.h create mode 100644 arch/arm/include/asm/exec.h create mode 100644 arch/arm/include/asm/switch_to.h create mode 100644 arch/arm/include/asm/system_info.h create mode 100644 arch/arm/include/asm/system_misc.h diff --git a/arch/arm/common/via82c505.c b/arch/arm/common/via82c505.c index 67dd2af..1171a50 100644 --- a/arch/arm/common/via82c505.c +++ b/arch/arm/common/via82c505.c @@ -6,7 +6,6 @@ #include #include -#include #include diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h index 86976d0..68374ba 100644 --- a/arch/arm/include/asm/atomic.h +++ b/arch/arm/include/asm/atomic.h @@ -13,7 +13,9 @@ #include #include -#include +#include +#include +#include #define ATOMIC_INIT(i) { (i) } diff --git a/arch/arm/include/asm/barrier.h b/arch/arm/include/asm/barrier.h new file mode 100644 index 0000000..81b24b6 --- /dev/null +++ b/arch/arm/include/asm/barrier.h @@ -0,0 +1,64 @@ +#ifndef __ASM_BARRIER_H +#define __ASM_BARRIER_H + + +#if __LINUX_ARM_ARCH__ >= 7 || \ + (__LINUX_ARM_ARCH__ == 6 && defined(CONFIG_CPU_32v6K)) +#define sev() __asm__ __volatile__ ("sev" : : : "memory") +#define wfe() __asm__ __volatile__ ("wfe" : : : "memory") +#define wfi() __asm__ __volatile__ ("wfi" : : : "memory") +#endif + +#if __LINUX_ARM_ARCH__ >= 7 +#define isb() __asm__ __volatile__ ("isb" : : : "memory") +#define dsb() __asm__ __volatile__ ("dsb" : : : "memory") +#define dmb() __asm__ __volatile__ ("dmb" : : : "memory") +#elif defined(CONFIG_CPU_XSC3) || __LINUX_ARM_ARCH__ == 6 +#define isb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c5, 4" \ + : : "r" (0) : "memory") +#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ + : : "r" (0) : "memory") +#define dmb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 5" \ + : : "r" (0) : "memory") +#elif defined(CONFIG_CPU_FA526) +#define isb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c5, 4" \ + : : "r" (0) : "memory") +#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ + : : "r" (0) : "memory") +#define dmb() __asm__ __volatile__ ("" : : : "memory") +#else +#define isb() __asm__ __volatile__ ("" : : : "memory") +#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ + : : "r" (0) : "memory") +#define dmb() __asm__ __volatile__ ("" : : : "memory") +#endif + +#ifdef CONFIG_ARCH_HAS_BARRIERS +#include +#elif defined(CONFIG_ARM_DMA_MEM_BUFFERABLE) || defined(CONFIG_SMP) +#define mb() do { dsb(); outer_sync(); } while (0) +#define rmb() dsb() +#define wmb() mb() +#else +#include +#define mb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0) +#define rmb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0) +#define wmb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0) +#endif + +#ifndef CONFIG_SMP +#define smp_mb() barrier() +#define smp_rmb() barrier() +#define smp_wmb() barrier() +#else +#define smp_mb() dmb() +#define smp_rmb() dmb() +#define smp_wmb() dmb() +#endif + +#define read_barrier_depends() do { } while(0) +#define smp_read_barrier_depends() do { } while(0) + +#define set_mb(var, value) do { var = value; smp_mb(); } while (0) + +#endif /* __ASM_BARRIER_H */ diff --git a/arch/arm/include/asm/bitops.h b/arch/arm/include/asm/bitops.h index f7419ef..e691ec9 100644 --- a/arch/arm/include/asm/bitops.h +++ b/arch/arm/include/asm/bitops.h @@ -24,7 +24,7 @@ #endif #include -#include +#include #define smp_mb__before_clear_bit() smp_mb() #define smp_mb__after_clear_bit() smp_mb() diff --git a/arch/arm/include/asm/bug.h b/arch/arm/include/asm/bug.h index fac79dc..7af5c6c 100644 --- a/arch/arm/include/asm/bug.h +++ b/arch/arm/include/asm/bug.h @@ -1,6 +1,7 @@ #ifndef _ASMARM_BUG_H #define _ASMARM_BUG_H +#include #ifdef CONFIG_BUG @@ -57,4 +58,33 @@ do { \ #include +struct pt_regs; +void die(const char *msg, struct pt_regs *regs, int err); + +struct siginfo; +void arm_notify_die(const char *str, struct pt_regs *regs, struct siginfo *info, + unsigned long err, unsigned long trap); + +#ifdef CONFIG_ARM_LPAE +#define FAULT_CODE_ALIGNMENT 33 +#define FAULT_CODE_DEBUG 34 +#else +#define FAULT_CODE_ALIGNMENT 1 +#define FAULT_CODE_DEBUG 2 +#endif + +void hook_fault_code(int nr, int (*fn)(unsigned long, unsigned int, + struct pt_regs *), + int sig, int code, const char *name); + +void hook_ifault_code(int nr, int (*fn)(unsigned long, unsigned int, + struct pt_regs *), + int sig, int code, const char *name); + +extern asmlinkage void c_backtrace(unsigned long fp, int pmode); + +struct mm_struct; +extern void show_pte(struct mm_struct *mm, unsigned long addr); +extern void __show_regs(struct pt_regs *); + #endif diff --git a/arch/arm/include/asm/cmpxchg.h b/arch/arm/include/asm/cmpxchg.h new file mode 100644 index 0000000..d41d7cb --- /dev/null +++ b/arch/arm/include/asm/cmpxchg.h @@ -0,0 +1,295 @@ +#ifndef __ASM_ARM_CMPXCHG_H +#define __ASM_ARM_CMPXCHG_H + +#include +#include + +#if defined(CONFIG_CPU_SA1100) || defined(CONFIG_CPU_SA110) +/* + * On the StrongARM, "swp" is terminally broken since it bypasses the + * cache totally. This means that the cache becomes inconsistent, and, + * since we use normal loads/stores as well, this is really bad. + * Typically, this causes oopsen in filp_close, but could have other, + * more disastrous effects. There are two work-arounds: + * 1. Disable interrupts and emulate the atomic swap + * 2. Clean the cache, perform atomic swap, flush the cache + * + * 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. + */ +#define swp_is_buggy +#endif + +static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size) +{ + extern void __bad_xchg(volatile void *, int); + unsigned long ret; +#ifdef swp_is_buggy + unsigned long flags; +#endif +#if __LINUX_ARM_ARCH__ >= 6 + unsigned int tmp; +#endif + + smp_mb(); + + switch (size) { +#if __LINUX_ARM_ARCH__ >= 6 + case 1: + asm volatile("@ __xchg1\n" + "1: ldrexb %0, [%3]\n" + " strexb %1, %2, [%3]\n" + " teq %1, #0\n" + " bne 1b" + : "=&r" (ret), "=&r" (tmp) + : "r" (x), "r" (ptr) + : "memory", "cc"); + break; + case 4: + asm volatile("@ __xchg4\n" + "1: ldrex %0, [%3]\n" + " strex %1, %2, [%3]\n" + " teq %1, #0\n" + " bne 1b" + : "=&r" (ret), "=&r" (tmp) + : "r" (x), "r" (ptr) + : "memory", "cc"); + break; +#elif defined(swp_is_buggy) +#ifdef CONFIG_SMP +#error SMP is not supported on this platform +#endif + case 1: + raw_local_irq_save(flags); + ret = *(volatile unsigned char *)ptr; + *(volatile unsigned char *)ptr = x; + raw_local_irq_restore(flags); + break; + + case 4: + raw_local_irq_save(flags); + ret = *(volatile unsigned long *)ptr; + *(volatile unsigned long *)ptr = x; + raw_local_irq_restore(flags); + break; +#else + case 1: + asm volatile("@ __xchg1\n" + " swpb %0, %1, [%2]" + : "=&r" (ret) + : "r" (x), "r" (ptr) + : "memory", "cc"); + break; + case 4: + asm volatile("@ __xchg4\n" + " swp %0, %1, [%2]" + : "=&r" (ret) + : "r" (x), "r" (ptr) + : "memory", "cc"); + break; +#endif + default: + __bad_xchg(ptr, size), ret = 0; + break; + } + smp_mb(); + + return ret; +} + +#define xchg(ptr,x) \ + ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) + +#include + +#if __LINUX_ARM_ARCH__ < 6 +/* min ARCH < ARMv6 */ + +#ifdef CONFIG_SMP +#error "SMP is not supported on this platform" +#endif + +/* + * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make + * them available. + */ +#define cmpxchg_local(ptr, o, n) \ + ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\ + (unsigned long)(n), sizeof(*(ptr)))) +#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) + +#ifndef CONFIG_SMP +#include +#endif + +#else /* min ARCH >= ARMv6 */ + +extern void __bad_cmpxchg(volatile void *ptr, int size); + +/* + * cmpxchg only support 32-bits operands on ARMv6. + */ + +static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old, + unsigned long new, int size) +{ + unsigned long oldval, res; + + switch (size) { +#ifndef CONFIG_CPU_V6 /* min ARCH >= ARMv6K */ + case 1: + do { + asm volatile("@ __cmpxchg1\n" + " ldrexb %1, [%2]\n" + " mov %0, #0\n" + " teq %1, %3\n" + " strexbeq %0, %4, [%2]\n" + : "=&r" (res), "=&r" (oldval) + : "r" (ptr), "Ir" (old), "r" (new) + : "memory", "cc"); + } while (res); + break; + case 2: + do { + asm volatile("@ __cmpxchg1\n" + " ldrexh %1, [%2]\n" + " mov %0, #0\n" + " teq %1, %3\n" + " strexheq %0, %4, [%2]\n" + : "=&r" (res), "=&r" (oldval) + : "r" (ptr), "Ir" (old), "r" (new) + : "memory", "cc"); + } while (res); + break; +#endif + case 4: + do { + asm volatile("@ __cmpxchg4\n" + " ldrex %1, [%2]\n" + " mov %0, #0\n" + " teq %1, %3\n" + " strexeq %0, %4, [%2]\n" + : "=&r" (res), "=&r" (oldval) + : "r" (ptr), "Ir" (old), "r" (new) + : "memory", "cc"); + } while (res); + break; + default: + __bad_cmpxchg(ptr, size); + oldval = 0; + } + + return oldval; +} + +static inline unsigned long __cmpxchg_mb(volatile void *ptr, unsigned long old, + unsigned long new, int size) +{ + unsigned long ret; + + smp_mb(); + ret = __cmpxchg(ptr, old, new, size); + smp_mb(); + + return ret; +} + +#define cmpxchg(ptr,o,n) \ + ((__typeof__(*(ptr)))__cmpxchg_mb((ptr), \ + (unsigned long)(o), \ + (unsigned long)(n), \ + sizeof(*(ptr)))) + +static inline unsigned long __cmpxchg_local(volatile void *ptr, + unsigned long old, + unsigned long new, int size) +{ + unsigned long ret; + + switch (size) { +#ifdef CONFIG_CPU_V6 /* min ARCH == ARMv6 */ + case 1: + case 2: + ret = __cmpxchg_local_generic(ptr, old, new, size); + break; +#endif + default: + ret = __cmpxchg(ptr, old, new, size); + } + + return ret; +} + +#define cmpxchg_local(ptr,o,n) \ + ((__typeof__(*(ptr)))__cmpxchg_local((ptr), \ + (unsigned long)(o), \ + (unsigned long)(n), \ + sizeof(*(ptr)))) + +#ifndef CONFIG_CPU_V6 /* min ARCH >= ARMv6K */ + +/* + * Note : ARMv7-M (currently unsupported by Linux) does not support + * ldrexd/strexd. If ARMv7-M is ever supported by the Linux kernel, it should + * not be allowed to use __cmpxchg64. + */ +static inline unsigned long long __cmpxchg64(volatile void *ptr, + unsigned long long old, + unsigned long long new) +{ + register unsigned long long oldval asm("r0"); + register unsigned long long __old asm("r2") = old; + register unsigned long long __new asm("r4") = new; + unsigned long res; + + do { + asm volatile( + " @ __cmpxchg8\n" + " ldrexd %1, %H1, [%2]\n" + " mov %0, #0\n" + " teq %1, %3\n" + " teqeq %H1, %H3\n" + " strexdeq %0, %4, %H4, [%2]\n" + : "=&r" (res), "=&r" (oldval) + : "r" (ptr), "Ir" (__old), "r" (__new) + : "memory", "cc"); + } while (res); + + return oldval; +} + +static inline unsigned long long __cmpxchg64_mb(volatile void *ptr, + unsigned long long old, + unsigned long long new) +{ + unsigned long long ret; + + smp_mb(); + ret = __cmpxchg64(ptr, old, new); + smp_mb(); + + return ret; +} + +#define cmpxchg64(ptr,o,n) \ + ((__typeof__(*(ptr)))__cmpxchg64_mb((ptr), \ + (unsigned long long)(o), \ + (unsigned long long)(n))) + +#define cmpxchg64_local(ptr,o,n) \ + ((__typeof__(*(ptr)))__cmpxchg64((ptr), \ + (unsigned long long)(o), \ + (unsigned long long)(n))) + +#else /* min ARCH = ARMv6 */ + +#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) + +#endif + +#endif /* __LINUX_ARM_ARCH__ >= 6 */ + +#endif /* __ASM_ARM_CMPXCHG_H */ diff --git a/arch/arm/include/asm/compiler.h b/arch/arm/include/asm/compiler.h new file mode 100644 index 0000000..8155db2 --- /dev/null +++ b/arch/arm/include/asm/compiler.h @@ -0,0 +1,15 @@ +#ifndef __ASM_ARM_COMPILER_H +#define __ASM_ARM_COMPILER_H + +/* + * This is used to ensure the compiler did actually allocate the register we + * asked it for some inline assembly sequences. Apparently we can't trust + * the compiler from one version to another so a bit of paranoia won't hurt. + * This string is meant to be concatenated with the inline asm string and + * will cause compilation to stop on mismatch. + * (for details, see gcc PR 15089) + */ +#define __asmeq(x, y) ".ifnc " x "," y " ; .err ; .endif\n\t" + + +#endif /* __ASM_ARM_COMPILER_H */ diff --git a/arch/arm/include/asm/cr_reg.h b/arch/arm/include/asm/cr_reg.h new file mode 100644 index 0000000..df83b5b --- /dev/null +++ b/arch/arm/include/asm/cr_reg.h @@ -0,0 +1,85 @@ +#ifndef __ASM_ARM_CR_REG_H +#define __ASM_ARM_CR_REG_H + +/* + * CR1 bits (CP#15 CR1) + */ +#define CR_M (1 << 0) /* MMU enable */ +#define CR_A (1 << 1) /* Alignment abort enable */ +#define CR_C (1 << 2) /* Dcache enable */ +#define CR_W (1 << 3) /* Write buffer enable */ +#define CR_P (1 << 4) /* 32-bit exception handler */ +#define CR_D (1 << 5) /* 32-bit data address range */ +#define CR_L (1 << 6) /* Implementation defined */ +#define CR_B (1 << 7) /* Big endian */ +#define CR_S (1 << 8) /* System MMU protection */ +#define CR_R (1 << 9) /* ROM MMU protection */ +#define CR_F (1 << 10) /* Implementation defined */ +#define CR_Z (1 << 11) /* Implementation defined */ +#define CR_I (1 << 12) /* Icache enable */ +#define CR_V (1 << 13) /* Vectors relocated to 0xffff0000 */ +#define CR_RR (1 << 14) /* Round Robin cache replacement */ +#define CR_L4 (1 << 15) /* LDR pc can set T bit */ +#define CR_DT (1 << 16) +#define CR_IT (1 << 18) +#define CR_ST (1 << 19) +#define CR_FI (1 << 21) /* Fast interrupt (lower latency mode) */ +#define CR_U (1 << 22) /* Unaligned access operation */ +#define CR_XP (1 << 23) /* Extended page tables */ +#define CR_VE (1 << 24) /* Vectored interrupts */ +#define CR_EE (1 << 25) /* Exception (Big) Endian */ +#define CR_TRE (1 << 28) /* TEX remap enable */ +#define CR_AFE (1 << 29) /* Access flag enable */ +#define CR_TE (1 << 30) /* Thumb exception enable */ + +#ifndef __ASSEMBLY__ + +extern unsigned long cr_no_alignment; /* defined in entry-armv.S */ +extern unsigned long cr_alignment; /* defined in entry-armv.S */ + +#if __LINUX_ARM_ARCH__ >= 4 +#define vectors_high() (cr_alignment & CR_V) +#else +#define vectors_high() (0) +#endif + +static inline unsigned int get_cr(void) +{ + unsigned int val; + asm("mrc p15, 0, %0, c1, c0, 0 @ get CR" : "=r" (val) : : "cc"); + return val; +} + +static inline void set_cr(unsigned int val) +{ + asm volatile("mcr p15, 0, %0, c1, c0, 0 @ set CR" + : : "r" (val) : "cc"); + isb(); +} + +#ifndef CONFIG_SMP +extern void adjust_cr(unsigned long mask, unsigned long set); +#endif + +#define CPACC_FULL(n) (3 << (n * 2)) +#define CPACC_SVC(n) (1 << (n * 2)) +#define CPACC_DISABLE(n) (0 << (n * 2)) + +static inline unsigned int get_copro_access(void) +{ + unsigned int val; + asm("mrc p15, 0, %0, c1, c0, 2 @ get copro access" + : "=r" (val) : : "cc"); + return val; +} + +static inline void set_copro_access(unsigned int val) +{ + asm volatile("mcr p15, 0, %0, c1, c0, 2 @ set copro access" + : : "r" (val) : "cc"); + isb(); +} + +#endif /* !__ASSEMBLY__ */ + +#endif /* __ASM_ARM_CR_REG_H */ diff --git a/arch/arm/include/asm/div64.h b/arch/arm/include/asm/div64.h index d3f0a9e..fe92ccf 100644 --- a/arch/arm/include/asm/div64.h +++ b/arch/arm/include/asm/div64.h @@ -1,8 +1,8 @@ #ifndef __ASM_ARM_DIV64 #define __ASM_ARM_DIV64 -#include #include +#include /* * The semantics of do_div() are: diff --git a/arch/arm/include/asm/dma.h b/arch/arm/include/asm/dma.h index 69a5b0b..5694a0d 100644 --- a/arch/arm/include/asm/dma.h +++ b/arch/arm/include/asm/dma.h @@ -19,7 +19,6 @@ * It should not be re-used except for that purpose. */ #include -#include #include #include diff --git a/arch/arm/include/asm/domain.h b/arch/arm/include/asm/domain.h index b5dc173..489f160 100644 --- a/arch/arm/include/asm/domain.h +++ b/arch/arm/include/asm/domain.h @@ -10,6 +10,8 @@ #ifndef __ASM_PROC_DOMAIN_H #define __ASM_PROC_DOMAIN_H +#include + /* * Domain numbers * diff --git a/arch/arm/include/asm/exec.h b/arch/arm/include/asm/exec.h new file mode 100644 index 0000000..7c4fbef --- /dev/null +++ b/arch/arm/include/asm/exec.h @@ -0,0 +1,6 @@ +#ifndef __ASM_ARM_EXEC_H +#define __ASM_ARM_EXEC_H + +#define arch_align_stack(x) (x) + +#endif /* __ASM_ARM_EXEC_H */ diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h index 9275828..0a34bf7 100644 --- a/arch/arm/include/asm/io.h +++ b/arch/arm/include/asm/io.h @@ -26,7 +26,6 @@ #include #include #include -#include #include /* diff --git a/arch/arm/include/asm/mmu.h b/arch/arm/include/asm/mmu.h index 1496565..b8e580a 100644 --- a/arch/arm/include/asm/mmu.h +++ b/arch/arm/include/asm/mmu.h @@ -34,4 +34,11 @@ typedef struct { #endif +/* + * switch_mm() may do a full cache flush over the context switch, + * so enable interrupts over the context switch to avoid high + * latency. + */ +#define __ARCH_WANT_INTERRUPTS_ON_CTXSW + #endif diff --git a/arch/arm/include/asm/processor.h b/arch/arm/include/asm/processor.h index cb8d638..ce280b8 100644 --- a/arch/arm/include/asm/processor.h +++ b/arch/arm/include/asm/processor.h @@ -22,7 +22,6 @@ #include #include #include -#include #ifdef __KERNEL__ #define STACK_TOP ((current->personality & ADDR_LIMIT_32BIT) ? \ diff --git a/arch/arm/include/asm/switch_to.h b/arch/arm/include/asm/switch_to.h new file mode 100644 index 0000000..fa09e6b --- /dev/null +++ b/arch/arm/include/asm/switch_to.h @@ -0,0 +1,18 @@ +#ifndef __ASM_ARM_SWITCH_TO_H +#define __ASM_ARM_SWITCH_TO_H + +#include + +/* + * switch_to(prev, next) should switch from task `prev' to `next' + * `prev' will never be the same as `next'. schedule() itself + * contains the memory barrier to tell GCC not to cache `current'. + */ +extern struct task_struct *__switch_to(struct task_struct *, struct thread_info *, struct thread_info *); + +#define switch_to(prev,next,last) \ +do { \ + last = __switch_to(prev,task_thread_info(prev), task_thread_info(next)); \ +} while (0) + +#endif /* __ASM_ARM_SWITCH_TO_H */ diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h index e4c96cc..ae2c8c2 100644 --- a/arch/arm/include/asm/system.h +++ b/arch/arm/include/asm/system.h @@ -1,543 +1,9 @@ -#ifndef __ASM_ARM_SYSTEM_H -#define __ASM_ARM_SYSTEM_H - -#ifdef __KERNEL__ - -#define CPU_ARCH_UNKNOWN 0 -#define CPU_ARCH_ARMv3 1 -#define CPU_ARCH_ARMv4 2 -#define CPU_ARCH_ARMv4T 3 -#define CPU_ARCH_ARMv5 4 -#define CPU_ARCH_ARMv5T 5 -#define CPU_ARCH_ARMv5TE 6 -#define CPU_ARCH_ARMv5TEJ 7 -#define CPU_ARCH_ARMv6 8 -#define CPU_ARCH_ARMv7 9 - -/* - * CR1 bits (CP#15 CR1) - */ -#define CR_M (1 << 0) /* MMU enable */ -#define CR_A (1 << 1) /* Alignment abort enable */ -#define CR_C (1 << 2) /* Dcache enable */ -#define CR_W (1 << 3) /* Write buffer enable */ -#define CR_P (1 << 4) /* 32-bit exception handler */ -#define CR_D (1 << 5) /* 32-bit data address range */ -#define CR_L (1 << 6) /* Implementation defined */ -#define CR_B (1 << 7) /* Big endian */ -#define CR_S (1 << 8) /* System MMU protection */ -#define CR_R (1 << 9) /* ROM MMU protection */ -#define CR_F (1 << 10) /* Implementation defined */ -#define CR_Z (1 << 11) /* Implementation defined */ -#define CR_I (1 << 12) /* Icache enable */ -#define CR_V (1 << 13) /* Vectors relocated to 0xffff0000 */ -#define CR_RR (1 << 14) /* Round Robin cache replacement */ -#define CR_L4 (1 << 15) /* LDR pc can set T bit */ -#define CR_DT (1 << 16) -#define CR_IT (1 << 18) -#define CR_ST (1 << 19) -#define CR_FI (1 << 21) /* Fast interrupt (lower latency mode) */ -#define CR_U (1 << 22) /* Unaligned access operation */ -#define CR_XP (1 << 23) /* Extended page tables */ -#define CR_VE (1 << 24) /* Vectored interrupts */ -#define CR_EE (1 << 25) /* Exception (Big) Endian */ -#define CR_TRE (1 << 28) /* TEX remap enable */ -#define CR_AFE (1 << 29) /* Access flag enable */ -#define CR_TE (1 << 30) /* Thumb exception enable */ - -/* - * This is used to ensure the compiler did actually allocate the register we - * asked it for some inline assembly sequences. Apparently we can't trust - * the compiler from one version to another so a bit of paranoia won't hurt. - * This string is meant to be concatenated with the inline asm string and - * will cause compilation to stop on mismatch. - * (for details, see gcc PR 15089) - */ -#define __asmeq(x, y) ".ifnc " x "," y " ; .err ; .endif\n\t" - -#ifndef __ASSEMBLY__ - -#include -#include -#include - -#include - -struct thread_info; -struct task_struct; - -/* information about the system we're running on */ -extern unsigned int system_rev; -extern unsigned int system_serial_low; -extern unsigned int system_serial_high; -extern unsigned int mem_fclk_21285; - -struct pt_regs; - -void die(const char *msg, struct pt_regs *regs, int err); - -struct siginfo; -void arm_notify_die(const char *str, struct pt_regs *regs, struct siginfo *info, - unsigned long err, unsigned long trap); - -#ifdef CONFIG_ARM_LPAE -#define FAULT_CODE_ALIGNMENT 33 -#define FAULT_CODE_DEBUG 34 -#else -#define FAULT_CODE_ALIGNMENT 1 -#define FAULT_CODE_DEBUG 2 -#endif - -void hook_fault_code(int nr, int (*fn)(unsigned long, unsigned int, - struct pt_regs *), - int sig, int code, const char *name); - -void hook_ifault_code(int nr, int (*fn)(unsigned long, unsigned int, - struct pt_regs *), - int sig, int code, const char *name); - -#define xchg(ptr,x) \ - ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) - -extern asmlinkage void c_backtrace(unsigned long fp, int pmode); - -struct mm_struct; -extern void show_pte(struct mm_struct *mm, unsigned long addr); -extern void __show_regs(struct pt_regs *); - -extern int __pure cpu_architecture(void); -extern void cpu_init(void); - -void soft_restart(unsigned long); -extern void (*arm_pm_restart)(char str, const char *cmd); - -#define UDBG_UNDEFINED (1 << 0) -#define UDBG_SYSCALL (1 << 1) -#define UDBG_BADABORT (1 << 2) -#define UDBG_SEGV (1 << 3) -#define UDBG_BUS (1 << 4) - -extern unsigned int user_debug; - -#if __LINUX_ARM_ARCH__ >= 4 -#define vectors_high() (cr_alignment & CR_V) -#else -#define vectors_high() (0) -#endif - -#if __LINUX_ARM_ARCH__ >= 7 || \ - (__LINUX_ARM_ARCH__ == 6 && defined(CONFIG_CPU_32v6K)) -#define sev() __asm__ __volatile__ ("sev" : : : "memory") -#define wfe() __asm__ __volatile__ ("wfe" : : : "memory") -#define wfi() __asm__ __volatile__ ("wfi" : : : "memory") -#endif - -#if __LINUX_ARM_ARCH__ >= 7 -#define isb() __asm__ __volatile__ ("isb" : : : "memory") -#define dsb() __asm__ __volatile__ ("dsb" : : : "memory") -#define dmb() __asm__ __volatile__ ("dmb" : : : "memory") -#elif defined(CONFIG_CPU_XSC3) || __LINUX_ARM_ARCH__ == 6 -#define isb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c5, 4" \ - : : "r" (0) : "memory") -#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ - : : "r" (0) : "memory") -#define dmb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 5" \ - : : "r" (0) : "memory") -#elif defined(CONFIG_CPU_FA526) -#define isb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c5, 4" \ - : : "r" (0) : "memory") -#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ - : : "r" (0) : "memory") -#define dmb() __asm__ __volatile__ ("" : : : "memory") -#else -#define isb() __asm__ __volatile__ ("" : : : "memory") -#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ - : : "r" (0) : "memory") -#define dmb() __asm__ __volatile__ ("" : : : "memory") -#endif - -#ifdef CONFIG_ARCH_HAS_BARRIERS -#include -#elif defined(CONFIG_ARM_DMA_MEM_BUFFERABLE) || defined(CONFIG_SMP) -#define mb() do { dsb(); outer_sync(); } while (0) -#define rmb() dsb() -#define wmb() mb() -#else -#include -#define mb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0) -#define rmb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0) -#define wmb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0) -#endif - -#ifndef CONFIG_SMP -#define smp_mb() barrier() -#define smp_rmb() barrier() -#define smp_wmb() barrier() -#else -#define smp_mb() dmb() -#define smp_rmb() dmb() -#define smp_wmb() dmb() -#endif - -#define read_barrier_depends() do { } while(0) -#define smp_read_barrier_depends() do { } while(0) - -#define set_mb(var, value) do { var = value; smp_mb(); } while (0) -#define nop() __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t"); - -extern unsigned long cr_no_alignment; /* defined in entry-armv.S */ -extern unsigned long cr_alignment; /* defined in entry-armv.S */ - -static inline unsigned int get_cr(void) -{ - unsigned int val; - asm("mrc p15, 0, %0, c1, c0, 0 @ get CR" : "=r" (val) : : "cc"); - return val; -} - -static inline void set_cr(unsigned int val) -{ - asm volatile("mcr p15, 0, %0, c1, c0, 0 @ set CR" - : : "r" (val) : "cc"); - isb(); -} - -#ifndef CONFIG_SMP -extern void adjust_cr(unsigned long mask, unsigned long set); -#endif - -#define CPACC_FULL(n) (3 << (n * 2)) -#define CPACC_SVC(n) (1 << (n * 2)) -#define CPACC_DISABLE(n) (0 << (n * 2)) - -static inline unsigned int get_copro_access(void) -{ - unsigned int val; - asm("mrc p15, 0, %0, c1, c0, 2 @ get copro access" - : "=r" (val) : : "cc"); - return val; -} - -static inline void set_copro_access(unsigned int val) -{ - asm volatile("mcr p15, 0, %0, c1, c0, 2 @ set copro access" - : : "r" (val) : "cc"); - isb(); -} - -/* - * switch_mm() may do a full cache flush over the context switch, - * so enable interrupts over the context switch to avoid high - * latency. - */ -#define __ARCH_WANT_INTERRUPTS_ON_CTXSW - -/* - * switch_to(prev, next) should switch from task `prev' to `next' - * `prev' will never be the same as `next'. schedule() itself - * contains the memory barrier to tell GCC not to cache `current'. - */ -extern struct task_struct *__switch_to(struct task_struct *, struct thread_info *, struct thread_info *); - -#define switch_to(prev,next,last) \ -do { \ - last = __switch_to(prev,task_thread_info(prev), task_thread_info(next)); \ -} while (0) - -#if defined(CONFIG_CPU_SA1100) || defined(CONFIG_CPU_SA110) -/* - * On the StrongARM, "swp" is terminally broken since it bypasses the - * cache totally. This means that the cache becomes inconsistent, and, - * since we use normal loads/stores as well, this is really bad. - * Typically, this causes oopsen in filp_close, but could have other, - * more disastrous effects. There are two work-arounds: - * 1. Disable interrupts and emulate the atomic swap - * 2. Clean the cache, perform atomic swap, flush the cache - * - * 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. - */ -#define swp_is_buggy -#endif - -static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size) -{ - extern void __bad_xchg(volatile void *, int); - unsigned long ret; -#ifdef swp_is_buggy - unsigned long flags; -#endif -#if __LINUX_ARM_ARCH__ >= 6 - unsigned int tmp; -#endif - - smp_mb(); - - switch (size) { -#if __LINUX_ARM_ARCH__ >= 6 - case 1: - asm volatile("@ __xchg1\n" - "1: ldrexb %0, [%3]\n" - " strexb %1, %2, [%3]\n" - " teq %1, #0\n" - " bne 1b" - : "=&r" (ret), "=&r" (tmp) - : "r" (x), "r" (ptr) - : "memory", "cc"); - break; - case 4: - asm volatile("@ __xchg4\n" - "1: ldrex %0, [%3]\n" - " strex %1, %2, [%3]\n" - " teq %1, #0\n" - " bne 1b" - : "=&r" (ret), "=&r" (tmp) - : "r" (x), "r" (ptr) - : "memory", "cc"); - break; -#elif defined(swp_is_buggy) -#ifdef CONFIG_SMP -#error SMP is not supported on this platform -#endif - case 1: - raw_local_irq_save(flags); - ret = *(volatile unsigned char *)ptr; - *(volatile unsigned char *)ptr = x; - raw_local_irq_restore(flags); - break; - - case 4: - raw_local_irq_save(flags); - ret = *(volatile unsigned long *)ptr; - *(volatile unsigned long *)ptr = x; - raw_local_irq_restore(flags); - break; -#else - case 1: - asm volatile("@ __xchg1\n" - " swpb %0, %1, [%2]" - : "=&r" (ret) - : "r" (x), "r" (ptr) - : "memory", "cc"); - break; - case 4: - asm volatile("@ __xchg4\n" - " swp %0, %1, [%2]" - : "=&r" (ret) - : "r" (x), "r" (ptr) - : "memory", "cc"); - break; -#endif - default: - __bad_xchg(ptr, size), ret = 0; - break; - } - smp_mb(); - - return ret; -} - -extern void disable_hlt(void); -extern void enable_hlt(void); - -void cpu_idle_wait(void); - -#include - -#if __LINUX_ARM_ARCH__ < 6 -/* min ARCH < ARMv6 */ - -#ifdef CONFIG_SMP -#error "SMP is not supported on this platform" -#endif - -/* - * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make - * them available. - */ -#define cmpxchg_local(ptr, o, n) \ - ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\ - (unsigned long)(n), sizeof(*(ptr)))) -#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) - -#ifndef CONFIG_SMP -#include -#endif - -#else /* min ARCH >= ARMv6 */ - -extern void __bad_cmpxchg(volatile void *ptr, int size); - -/* - * cmpxchg only support 32-bits operands on ARMv6. - */ - -static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old, - unsigned long new, int size) -{ - unsigned long oldval, res; - - switch (size) { -#ifndef CONFIG_CPU_V6 /* min ARCH >= ARMv6K */ - case 1: - do { - asm volatile("@ __cmpxchg1\n" - " ldrexb %1, [%2]\n" - " mov %0, #0\n" - " teq %1, %3\n" - " strexbeq %0, %4, [%2]\n" - : "=&r" (res), "=&r" (oldval) - : "r" (ptr), "Ir" (old), "r" (new) - : "memory", "cc"); - } while (res); - break; - case 2: - do { - asm volatile("@ __cmpxchg1\n" - " ldrexh %1, [%2]\n" - " mov %0, #0\n" - " teq %1, %3\n" - " strexheq %0, %4, [%2]\n" - : "=&r" (res), "=&r" (oldval) - : "r" (ptr), "Ir" (old), "r" (new) - : "memory", "cc"); - } while (res); - break; -#endif - case 4: - do { - asm volatile("@ __cmpxchg4\n" - " ldrex %1, [%2]\n" - " mov %0, #0\n" - " teq %1, %3\n" - " strexeq %0, %4, [%2]\n" - : "=&r" (res), "=&r" (oldval) - : "r" (ptr), "Ir" (old), "r" (new) - : "memory", "cc"); - } while (res); - break; - default: - __bad_cmpxchg(ptr, size); - oldval = 0; - } - - return oldval; -} - -static inline unsigned long __cmpxchg_mb(volatile void *ptr, unsigned long old, - unsigned long new, int size) -{ - unsigned long ret; - - smp_mb(); - ret = __cmpxchg(ptr, old, new, size); - smp_mb(); - - return ret; -} - -#define cmpxchg(ptr,o,n) \ - ((__typeof__(*(ptr)))__cmpxchg_mb((ptr), \ - (unsigned long)(o), \ - (unsigned long)(n), \ - sizeof(*(ptr)))) - -static inline unsigned long __cmpxchg_local(volatile void *ptr, - unsigned long old, - unsigned long new, int size) -{ - unsigned long ret; - - switch (size) { -#ifdef CONFIG_CPU_V6 /* min ARCH == ARMv6 */ - case 1: - case 2: - ret = __cmpxchg_local_generic(ptr, old, new, size); - break; -#endif - default: - ret = __cmpxchg(ptr, old, new, size); - } - - return ret; -} - -#define cmpxchg_local(ptr,o,n) \ - ((__typeof__(*(ptr)))__cmpxchg_local((ptr), \ - (unsigned long)(o), \ - (unsigned long)(n), \ - sizeof(*(ptr)))) - -#ifndef CONFIG_CPU_V6 /* min ARCH >= ARMv6K */ - -/* - * Note : ARMv7-M (currently unsupported by Linux) does not support - * ldrexd/strexd. If ARMv7-M is ever supported by the Linux kernel, it should - * not be allowed to use __cmpxchg64. - */ -static inline unsigned long long __cmpxchg64(volatile void *ptr, - unsigned long long old, - unsigned long long new) -{ - register unsigned long long oldval asm("r0"); - register unsigned long long __old asm("r2") = old; - register unsigned long long __new asm("r4") = new; - unsigned long res; - - do { - asm volatile( - " @ __cmpxchg8\n" - " ldrexd %1, %H1, [%2]\n" - " mov %0, #0\n" - " teq %1, %3\n" - " teqeq %H1, %H3\n" - " strexdeq %0, %4, %H4, [%2]\n" - : "=&r" (res), "=&r" (oldval) - : "r" (ptr), "Ir" (__old), "r" (__new) - : "memory", "cc"); - } while (res); - - return oldval; -} - -static inline unsigned long long __cmpxchg64_mb(volatile void *ptr, - unsigned long long old, - unsigned long long new) -{ - unsigned long long ret; - - smp_mb(); - ret = __cmpxchg64(ptr, old, new); - smp_mb(); - - return ret; -} - -#define cmpxchg64(ptr,o,n) \ - ((__typeof__(*(ptr)))__cmpxchg64_mb((ptr), \ - (unsigned long long)(o), \ - (unsigned long long)(n))) - -#define cmpxchg64_local(ptr,o,n) \ - ((__typeof__(*(ptr)))__cmpxchg64((ptr), \ - (unsigned long long)(o), \ - (unsigned long long)(n))) - -#else /* min ARCH = ARMv6 */ - -#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) - -#endif - -#endif /* __LINUX_ARM_ARCH__ >= 6 */ - -#endif /* __ASSEMBLY__ */ - -#define arch_align_stack(x) (x) - -#endif /* __KERNEL__ */ - -#endif +/* FILE TO BE DELETED. DO NOT ADD STUFF HERE! */ +#include +#include +#include +#include +#include +#include +#include +#include diff --git a/arch/arm/include/asm/system_info.h b/arch/arm/include/asm/system_info.h new file mode 100644 index 0000000..dfd386d --- /dev/null +++ b/arch/arm/include/asm/system_info.h @@ -0,0 +1,27 @@ +#ifndef __ASM_ARM_SYSTEM_INFO_H +#define __ASM_ARM_SYSTEM_INFO_H + +#define CPU_ARCH_UNKNOWN 0 +#define CPU_ARCH_ARMv3 1 +#define CPU_ARCH_ARMv4 2 +#define CPU_ARCH_ARMv4T 3 +#define CPU_ARCH_ARMv5 4 +#define CPU_ARCH_ARMv5T 5 +#define CPU_ARCH_ARMv5TE 6 +#define CPU_ARCH_ARMv5TEJ 7 +#define CPU_ARCH_ARMv6 8 +#define CPU_ARCH_ARMv7 9 + +#ifndef __ASSEMBLY__ + +/* information about the system we're running on */ +extern unsigned int system_rev; +extern unsigned int system_serial_low; +extern unsigned int system_serial_high; +extern unsigned int mem_fclk_21285; + +extern int __pure cpu_architecture(void); + +#endif /* !__ASSEMBLY__ */ + +#endif /* __ASM_ARM_SYSTEM_INFO_H */ diff --git a/arch/arm/include/asm/system_misc.h b/arch/arm/include/asm/system_misc.h new file mode 100644 index 0000000..f5cf1e8 --- /dev/null +++ b/arch/arm/include/asm/system_misc.h @@ -0,0 +1,35 @@ +#ifndef __ASM_ARM_SYSTEM_MISC_H +#define __ASM_ARM_SYSTEM_MISC_H + +#ifndef __ASSEMBLY__ + +#include +#include +#include + +#include + +extern int __pure cpu_architecture(void); +extern void cpu_init(void); + +void soft_restart(unsigned long); +extern void (*arm_pm_restart)(char str, const char *cmd); + +#define UDBG_UNDEFINED (1 << 0) +#define UDBG_SYSCALL (1 << 1) +#define UDBG_BADABORT (1 << 2) +#define UDBG_SEGV (1 << 3) +#define UDBG_BUS (1 << 4) + +extern unsigned int user_debug; + +#define nop() __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t"); + +extern void disable_hlt(void); +extern void enable_hlt(void); + +void cpu_idle_wait(void); + +#endif /* !__ASSEMBLY__ */ + +#endif /* __ASM_ARM_SYSTEM_MISC_H */ diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h index 2958976..71f6536 100644 --- a/arch/arm/include/asm/uaccess.h +++ b/arch/arm/include/asm/uaccess.h @@ -16,8 +16,8 @@ #include #include #include -#include #include +#include #define VERIFY_READ 0 #define VERIFY_WRITE 1 diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c index 5b0bce6..b57c75e 100644 --- a/arch/arm/kernel/armksyms.c +++ b/arch/arm/kernel/armksyms.c @@ -18,7 +18,6 @@ #include #include -#include #include /* diff --git a/arch/arm/kernel/elf.c b/arch/arm/kernel/elf.c index ddba41d..d0d1e83 100644 --- a/arch/arm/kernel/elf.c +++ b/arch/arm/kernel/elf.c @@ -3,6 +3,7 @@ #include #include #include +#include int elf_check_arch(const struct elf32_hdr *x) { diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index be16a48..0260594 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -24,7 +24,6 @@ #include #include #include -#include #include "entry-header.S" #include diff --git a/arch/arm/kernel/fiq.c b/arch/arm/kernel/fiq.c index 4c164ec..0b484c2 100644 --- a/arch/arm/kernel/fiq.c +++ b/arch/arm/kernel/fiq.c @@ -44,7 +44,6 @@ #include #include #include -#include #include static unsigned long no_fiq_insn; diff --git a/arch/arm/kernel/head-nommu.S b/arch/arm/kernel/head-nommu.S index d46f259..601d2fd 100644 --- a/arch/arm/kernel/head-nommu.S +++ b/arch/arm/kernel/head-nommu.S @@ -18,7 +18,6 @@ #include #include #include -#include /* * Kernel startup entry point. diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index 6d57911..db344db 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -20,8 +20,8 @@ #include #include #include -#include #include +#include #ifdef CONFIG_DEBUG_LL #include diff --git a/arch/arm/kernel/hw_breakpoint.c b/arch/arm/kernel/hw_breakpoint.c index d6a95ef..ba386bd 100644 --- a/arch/arm/kernel/hw_breakpoint.c +++ b/arch/arm/kernel/hw_breakpoint.c @@ -34,7 +34,6 @@ #include #include #include -#include #include /* Breakpoint currently in use for each BRP. */ diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c index 3efd82c..6a6a097 100644 --- a/arch/arm/kernel/irq.c +++ b/arch/arm/kernel/irq.c @@ -36,7 +36,6 @@ #include #include -#include #include #include #include diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c index 764bd45..e097865 100644 --- a/arch/arm/kernel/machine_kexec.c +++ b/arch/arm/kernel/machine_kexec.c @@ -12,7 +12,6 @@ #include #include #include -#include extern const unsigned char relocate_new_kernel[]; extern const unsigned int relocate_new_kernel_size; diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 971d65c..784222c 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -35,7 +35,6 @@ #include #include #include -#include #include #include #include diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c index ede6443..45956c9 100644 --- a/arch/arm/kernel/ptrace.c +++ b/arch/arm/kernel/ptrace.c @@ -26,7 +26,6 @@ #include #include -#include #include #define REG_PC 15 diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index a255c39..e20ed9b 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -44,7 +44,6 @@ #include #include #include -#include #include #include @@ -53,6 +52,9 @@ #include #include #include +#include +#include +#include #if defined(CONFIG_DEPRECATED_PARAM_STRUCT) #include "compat.h" diff --git a/arch/arm/kernel/sleep.S b/arch/arm/kernel/sleep.S index 1f268bd..987dcf3 100644 --- a/arch/arm/kernel/sleep.S +++ b/arch/arm/kernel/sleep.S @@ -4,7 +4,6 @@ #include #include #include -#include .text /* diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index f84dfe6..cd77743 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -29,11 +29,11 @@ #include #include #include -#include #include #include #include #include +#include #include "signal.h" diff --git a/arch/arm/mach-clps711x/p720t-leds.c b/arch/arm/mach-clps711x/p720t-leds.c index 1512144..dd9a6cd 100644 --- a/arch/arm/mach-clps711x/p720t-leds.c +++ b/arch/arm/mach-clps711x/p720t-leds.c @@ -25,7 +25,6 @@ #include #include -#include #include #include diff --git a/arch/arm/mach-ebsa110/core.c b/arch/arm/mach-ebsa110/core.c index 294aad0..e43dcc0 100644 --- a/arch/arm/mach-ebsa110/core.c +++ b/arch/arm/mach-ebsa110/core.c @@ -22,7 +22,6 @@ #include #include #include -#include #include #include diff --git a/arch/arm/mach-ebsa110/leds.c b/arch/arm/mach-ebsa110/leds.c index 6a6ea57..101a320 100644 --- a/arch/arm/mach-ebsa110/leds.c +++ b/arch/arm/mach-ebsa110/leds.c @@ -17,7 +17,6 @@ #include #include -#include #include static spinlock_t leds_lock; diff --git a/arch/arm/mach-footbridge/dc21285.c b/arch/arm/mach-footbridge/dc21285.c index f685650..94a7087 100644 --- a/arch/arm/mach-footbridge/dc21285.c +++ b/arch/arm/mach-footbridge/dc21285.c @@ -21,7 +21,6 @@ #include