From 3bed8d67469cc7129b0babc0211c32fa68408ce0 Mon Sep 17 00:00:00 2001 From: David Howells Date: Mon, 12 Mar 2012 23:36:56 +0000 Subject: Disintegrate asm/system.h for Blackfin [ver #2] Disintegrate asm/system.h for Blackfin. Signed-off-by: David Howells cc: uclinux-dist-devel@blackfin.uclinux.org Signed-off-by: Bob Liu --- arch/blackfin/include/asm/atomic.h | 2 + arch/blackfin/include/asm/barrier.h | 48 ++++++++ arch/blackfin/include/asm/cmpxchg.h | 132 +++++++++++++++++++++ arch/blackfin/include/asm/exec.h | 1 + arch/blackfin/include/asm/irq_handler.h | 1 + arch/blackfin/include/asm/switch_to.h | 39 +++++++ arch/blackfin/include/asm/system.h | 197 +------------------------------- arch/blackfin/kernel/asm-offsets.c | 1 + arch/blackfin/kernel/ipipe.c | 1 - arch/blackfin/kernel/kgdb_test.c | 1 - arch/blackfin/kernel/process.c | 1 + arch/blackfin/kernel/ptrace.c | 1 - arch/blackfin/kernel/reboot.c | 1 - arch/blackfin/kernel/setup.c | 1 + arch/blackfin/kernel/trace.c | 1 + arch/blackfin/kernel/traps.c | 1 + 16 files changed, 233 insertions(+), 196 deletions(-) create mode 100644 arch/blackfin/include/asm/barrier.h create mode 100644 arch/blackfin/include/asm/cmpxchg.h create mode 100644 arch/blackfin/include/asm/exec.h create mode 100644 arch/blackfin/include/asm/switch_to.h diff --git a/arch/blackfin/include/asm/atomic.h b/arch/blackfin/include/asm/atomic.h index 54c6e2887e9f..c8db653c72d2 100644 --- a/arch/blackfin/include/asm/atomic.h +++ b/arch/blackfin/include/asm/atomic.h @@ -7,6 +7,8 @@ #ifndef __ARCH_BLACKFIN_ATOMIC__ #define __ARCH_BLACKFIN_ATOMIC__ +#include + #ifdef CONFIG_SMP #include diff --git a/arch/blackfin/include/asm/barrier.h b/arch/blackfin/include/asm/barrier.h new file mode 100644 index 000000000000..ebb189507dd7 --- /dev/null +++ b/arch/blackfin/include/asm/barrier.h @@ -0,0 +1,48 @@ +/* + * Copyright 2004-2009 Analog Devices Inc. + * Tony Kou (tonyko@lineo.ca) + * + * Licensed under the GPL-2 or later + */ + +#ifndef _BLACKFIN_BARRIER_H +#define _BLACKFIN_BARRIER_H + +#include + +#define nop() __asm__ __volatile__ ("nop;\n\t" : : ) + +/* + * Force strict CPU ordering. + */ +#ifdef CONFIG_SMP + +#ifdef __ARCH_SYNC_CORE_DCACHE +/* Force Core data cache coherence */ +# define mb() do { barrier(); smp_check_barrier(); smp_mark_barrier(); } while (0) +# define rmb() do { barrier(); smp_check_barrier(); } while (0) +# define wmb() do { barrier(); smp_mark_barrier(); } while (0) +# define read_barrier_depends() do { barrier(); smp_check_barrier(); } while (0) +#else +# define mb() barrier() +# define rmb() barrier() +# define wmb() barrier() +# define read_barrier_depends() do { } while (0) +#endif + +#else /* !CONFIG_SMP */ + +#define mb() barrier() +#define rmb() barrier() +#define wmb() barrier() +#define read_barrier_depends() do { } while (0) + +#endif /* !CONFIG_SMP */ + +#define smp_mb() mb() +#define smp_rmb() rmb() +#define smp_wmb() wmb() +#define set_mb(var, value) do { var = value; mb(); } while (0) +#define smp_read_barrier_depends() read_barrier_depends() + +#endif /* _BLACKFIN_BARRIER_H */ diff --git a/arch/blackfin/include/asm/cmpxchg.h b/arch/blackfin/include/asm/cmpxchg.h new file mode 100644 index 000000000000..ba2484f4cb2a --- /dev/null +++ b/arch/blackfin/include/asm/cmpxchg.h @@ -0,0 +1,132 @@ +/* + * Copyright 2004-2011 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#ifndef __ARCH_BLACKFIN_CMPXCHG__ +#define __ARCH_BLACKFIN_CMPXCHG__ + +#ifdef CONFIG_SMP + +#include + +asmlinkage unsigned long __raw_xchg_1_asm(volatile void *ptr, unsigned long value); +asmlinkage unsigned long __raw_xchg_2_asm(volatile void *ptr, unsigned long value); +asmlinkage unsigned long __raw_xchg_4_asm(volatile void *ptr, unsigned long value); +asmlinkage unsigned long __raw_cmpxchg_1_asm(volatile void *ptr, + unsigned long new, unsigned long old); +asmlinkage unsigned long __raw_cmpxchg_2_asm(volatile void *ptr, + unsigned long new, unsigned long old); +asmlinkage unsigned long __raw_cmpxchg_4_asm(volatile void *ptr, + unsigned long new, unsigned long old); + +static inline unsigned long __xchg(unsigned long x, volatile void *ptr, + int size) +{ + unsigned long tmp; + + switch (size) { + case 1: + tmp = __raw_xchg_1_asm(ptr, x); + break; + case 2: + tmp = __raw_xchg_2_asm(ptr, x); + break; + case 4: + tmp = __raw_xchg_4_asm(ptr, x); + break; + } + + return tmp; +} + +/* + * Atomic compare and exchange. Compare OLD with MEM, if identical, + * store NEW in MEM. Return the initial value in MEM. Success is + * indicated by comparing RETURN with OLD. + */ +static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old, + unsigned long new, int size) +{ + unsigned long tmp; + + switch (size) { + case 1: + tmp = __raw_cmpxchg_1_asm(ptr, new, old); + break; + case 2: + tmp = __raw_cmpxchg_2_asm(ptr, new, old); + break; + case 4: + tmp = __raw_cmpxchg_4_asm(ptr, new, old); + break; + } + + return tmp; +} +#define cmpxchg(ptr, o, n) \ + ((__typeof__(*(ptr)))__cmpxchg((ptr), (unsigned long)(o), \ + (unsigned long)(n), sizeof(*(ptr)))) + +#else /* !CONFIG_SMP */ + +#include +#include + +struct __xchg_dummy { + unsigned long a[100]; +}; +#define __xg(x) ((volatile struct __xchg_dummy *)(x)) + +static inline unsigned long __xchg(unsigned long x, volatile void *ptr, + int size) +{ + unsigned long tmp = 0; + unsigned long flags; + + flags = hard_local_irq_save(); + + switch (size) { + case 1: + __asm__ __volatile__ + ("%0 = b%2 (z);\n\t" + "b%2 = %1;\n\t" + : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory"); + break; + case 2: + __asm__ __volatile__ + ("%0 = w%2 (z);\n\t" + "w%2 = %1;\n\t" + : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory"); + break; + case 4: + __asm__ __volatile__ + ("%0 = %2;\n\t" + "%2 = %1;\n\t" + : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory"); + break; + } + hard_local_irq_restore(flags); + return tmp; +} + +#include + +/* + * 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)) + +#include + +#endif /* !CONFIG_SMP */ + +#define xchg(ptr, x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), sizeof(*(ptr)))) +#define tas(ptr) ((void)xchg((ptr), 1)) + +#endif /* __ARCH_BLACKFIN_CMPXCHG__ */ diff --git a/arch/blackfin/include/asm/exec.h b/arch/blackfin/include/asm/exec.h new file mode 100644 index 000000000000..54c2e1db274a --- /dev/null +++ b/arch/blackfin/include/asm/exec.h @@ -0,0 +1 @@ +/* define arch_align_stack() here */ diff --git a/arch/blackfin/include/asm/irq_handler.h b/arch/blackfin/include/asm/irq_handler.h index ee73f79aef10..4fbf83575db1 100644 --- a/arch/blackfin/include/asm/irq_handler.h +++ b/arch/blackfin/include/asm/irq_handler.h @@ -9,6 +9,7 @@ #include #include +#include /* init functions only */ extern int __init init_arch_irq(void); diff --git a/arch/blackfin/include/asm/switch_to.h b/arch/blackfin/include/asm/switch_to.h new file mode 100644 index 000000000000..aaf671be9242 --- /dev/null +++ b/arch/blackfin/include/asm/switch_to.h @@ -0,0 +1,39 @@ +/* + * Copyright 2004-2009 Analog Devices Inc. + * Tony Kou (tonyko@lineo.ca) + * + * Licensed under the GPL-2 or later + */ + +#ifndef _BLACKFIN_SWITCH_TO_H +#define _BLACKFIN_SWITCH_TO_H + +#define prepare_to_switch() do { } while(0) + +/* + * switch_to(n) should switch tasks to task ptr, first checking that + * ptr isn't the current task, in which case it does nothing. + */ + +#include +#include + +asmlinkage struct task_struct *resume(struct task_struct *prev, struct task_struct *next); + +#ifndef CONFIG_SMP +#define switch_to(prev,next,last) \ +do { \ + memcpy (&task_thread_info(prev)->l1_task_info, L1_SCRATCH_TASK_INFO, \ + sizeof *L1_SCRATCH_TASK_INFO); \ + memcpy (L1_SCRATCH_TASK_INFO, &task_thread_info(next)->l1_task_info, \ + sizeof *L1_SCRATCH_TASK_INFO); \ + (last) = resume (prev, next); \ +} while (0) +#else +#define switch_to(prev, next, last) \ +do { \ + (last) = resume(prev, next); \ +} while (0) +#endif + +#endif /* _BLACKFIN_SWITCH_TO_H */ diff --git a/arch/blackfin/include/asm/system.h b/arch/blackfin/include/asm/system.h index 44bd0cced725..a7f40578587c 100644 --- a/arch/blackfin/include/asm/system.h +++ b/arch/blackfin/include/asm/system.h @@ -1,192 +1,5 @@ -/* - * Copyright 2004-2009 Analog Devices Inc. - * Tony Kou (tonyko@lineo.ca) - * - * Licensed under the GPL-2 or later - */ - -#ifndef _BLACKFIN_SYSTEM_H -#define _BLACKFIN_SYSTEM_H - -#include -#include -#include -#include -#include -#include - -/* - * Force strict CPU ordering. - */ -#define nop() __asm__ __volatile__ ("nop;\n\t" : : ) -#define smp_mb() mb() -#define smp_rmb() rmb() -#define smp_wmb() wmb() -#define set_mb(var, value) do { var = value; mb(); } while (0) -#define smp_read_barrier_depends() read_barrier_depends() - -#ifdef CONFIG_SMP -asmlinkage unsigned long __raw_xchg_1_asm(volatile void *ptr, unsigned long value); -asmlinkage unsigned long __raw_xchg_2_asm(volatile void *ptr, unsigned long value); -asmlinkage unsigned long __raw_xchg_4_asm(volatile void *ptr, unsigned long value); -asmlinkage unsigned long __raw_cmpxchg_1_asm(volatile void *ptr, - unsigned long new, unsigned long old); -asmlinkage unsigned long __raw_cmpxchg_2_asm(volatile void *ptr, - unsigned long new, unsigned long old); -asmlinkage unsigned long __raw_cmpxchg_4_asm(volatile void *ptr, - unsigned long new, unsigned long old); - -#ifdef __ARCH_SYNC_CORE_DCACHE -/* Force Core data cache coherence */ -# define mb() do { barrier(); smp_check_barrier(); smp_mark_barrier(); } while (0) -# define rmb() do { barrier(); smp_check_barrier(); } while (0) -# define wmb() do { barrier(); smp_mark_barrier(); } while (0) -# define read_barrier_depends() do { barrier(); smp_check_barrier(); } while (0) -#else -# define mb() barrier() -# define rmb() barrier() -# define wmb() barrier() -# define read_barrier_depends() do { } while (0) -#endif - -static inline unsigned long __xchg(unsigned long x, volatile void *ptr, - int size) -{ - unsigned long tmp; - - switch (size) { - case 1: - tmp = __raw_xchg_1_asm(ptr, x); - break; - case 2: - tmp = __raw_xchg_2_asm(ptr, x); - break; - case 4: - tmp = __raw_xchg_4_asm(ptr, x); - break; - } - - return tmp; -} - -/* - * Atomic compare and exchange. Compare OLD with MEM, if identical, - * store NEW in MEM. Return the initial value in MEM. Success is - * indicated by comparing RETURN with OLD. - */ -static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old, - unsigned long new, int size) -{ - unsigned long tmp; - - switch (size) { - case 1: - tmp = __raw_cmpxchg_1_asm(ptr, new, old); - break; - case 2: - tmp = __raw_cmpxchg_2_asm(ptr, new, old); - break; - case 4: - tmp = __raw_cmpxchg_4_asm(ptr, new, old); - break; - } - - return tmp; -} -#define cmpxchg(ptr, o, n) \ - ((__typeof__(*(ptr)))__cmpxchg((ptr), (unsigned long)(o), \ - (unsigned long)(n), sizeof(*(ptr)))) - -#else /* !CONFIG_SMP */ - -#define mb() barrier() -#define rmb() barrier() -#define wmb() barrier() -#define read_barrier_depends() do { } while (0) - -struct __xchg_dummy { - unsigned long a[100]; -}; -#define __xg(x) ((volatile struct __xchg_dummy *)(x)) - -#include - -static inline unsigned long __xchg(unsigned long x, volatile void *ptr, - int size) -{ - unsigned long tmp = 0; - unsigned long flags; - - flags = hard_local_irq_save(); - - switch (size) { - case 1: - __asm__ __volatile__ - ("%0 = b%2 (z);\n\t" - "b%2 = %1;\n\t" - : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory"); - break; - case 2: - __asm__ __volatile__ - ("%0 = w%2 (z);\n\t" - "w%2 = %1;\n\t" - : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory"); - break; - case 4: - __asm__ __volatile__ - ("%0 = %2;\n\t" - "%2 = %1;\n\t" - : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory"); - break; - } - hard_local_irq_restore(flags); - return tmp; -} - -#include - -/* - * 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)) - -#include - -#endif /* !CONFIG_SMP */ - -#define xchg(ptr, x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), sizeof(*(ptr)))) -#define tas(ptr) ((void)xchg((ptr), 1)) - -#define prepare_to_switch() do { } while(0) - -/* - * switch_to(n) should switch tasks to task ptr, first checking that - * ptr isn't the current task, in which case it does nothing. - */ - -#include -#include - -asmlinkage struct task_struct *resume(struct task_struct *prev, struct task_struct *next); - -#ifndef CONFIG_SMP -#define switch_to(prev,next,last) \ -do { \ - memcpy (&task_thread_info(prev)->l1_task_info, L1_SCRATCH_TASK_INFO, \ - sizeof *L1_SCRATCH_TASK_INFO); \ - memcpy (L1_SCRATCH_TASK_INFO, &task_thread_info(next)->l1_task_info, \ - sizeof *L1_SCRATCH_TASK_INFO); \ - (last) = resume (prev, next); \ -} while (0) -#else -#define switch_to(prev, next, last) \ -do { \ - (last) = resume(prev, next); \ -} while (0) -#endif - -#endif /* _BLACKFIN_SYSTEM_H */ +/* FILE TO BE DELETED. DO NOT ADD STUFF HERE! */ +#include +#include +#include +#include diff --git a/arch/blackfin/kernel/asm-offsets.c b/arch/blackfin/kernel/asm-offsets.c index 17e35465a416..37fcae950216 100644 --- a/arch/blackfin/kernel/asm-offsets.c +++ b/arch/blackfin/kernel/asm-offsets.c @@ -14,6 +14,7 @@ #include #include #include +#include int main(void) { diff --git a/arch/blackfin/kernel/ipipe.c b/arch/blackfin/kernel/ipipe.c index dbe11220cc53..f657b38163e3 100644 --- a/arch/blackfin/kernel/ipipe.c +++ b/arch/blackfin/kernel/ipipe.c @@ -31,7 +31,6 @@ #include #include #include -#include #include #include diff --git a/arch/blackfin/kernel/kgdb_test.c b/arch/blackfin/kernel/kgdb_test.c index 4a7dcfea98af..18ab004aea1c 100644 --- a/arch/blackfin/kernel/kgdb_test.c +++ b/arch/blackfin/kernel/kgdb_test.c @@ -13,7 +13,6 @@ #include #include -#include #include diff --git a/arch/blackfin/kernel/process.c b/arch/blackfin/kernel/process.c index a80a643f3691..c0f4fe287eb6 100644 --- a/arch/blackfin/kernel/process.c +++ b/arch/blackfin/kernel/process.c @@ -19,6 +19,7 @@ #include #include #include +#include asmlinkage void ret_from_fork(void); diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c index 75089f80855d..e1f88e028cfe 100644 --- a/arch/blackfin/kernel/ptrace.c +++ b/arch/blackfin/kernel/ptrace.c @@ -20,7 +20,6 @@ #include #include -#include #include #include #include diff --git a/arch/blackfin/kernel/reboot.c b/arch/blackfin/kernel/reboot.c index c4c0081b1996..b0434f89e8de 100644 --- a/arch/blackfin/kernel/reboot.c +++ b/arch/blackfin/kernel/reboot.c @@ -9,7 +9,6 @@ #include #include #include -#include #include /* A system soft reset makes external memory unusable so force diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c index d6102c86d037..2aa019368504 100644 --- a/arch/blackfin/kernel/setup.c +++ b/arch/blackfin/kernel/setup.c @@ -30,6 +30,7 @@ #include #include #include +#include u16 _bfin_swrst; EXPORT_SYMBOL(_bfin_swrst); diff --git a/arch/blackfin/kernel/trace.c b/arch/blackfin/kernel/trace.c index 050db44fe919..44bbf2f564cb 100644 --- a/arch/blackfin/kernel/trace.c +++ b/arch/blackfin/kernel/trace.c @@ -21,6 +21,7 @@ #include #include #include +#include void decode_address(char *buf, unsigned long address) { diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c index 655f25d139a7..de5c2c3ebd9b 100644 --- a/arch/blackfin/kernel/traps.c +++ b/arch/blackfin/kernel/traps.c @@ -17,6 +17,7 @@ #include #include #include +#include #ifdef CONFIG_KGDB # include -- cgit