/* * 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 <linux/linkage.h> 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 <mach/blackfin.h> #include <asm/irqflags.h> 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 <asm-generic/cmpxchg-local.h> /* * 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)) #define cmpxchg(ptr, o, n) cmpxchg_local((ptr), (o), (n)) #define cmpxchg64(ptr, o, n) cmpxchg64_local((ptr), (o), (n)) #endif /* !CONFIG_SMP */ #define xchg(ptr, x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), sizeof(*(ptr)))) #endif /* __ARCH_BLACKFIN_CMPXCHG__ */
Name | Type | Size | Permission | Actions |
---|---|---|---|---|
Kbuild | File | 658 B | 0644 |
|
asm-offsets.h | File | 35 B | 0644 |
|
atomic.h | File | 1.55 KB | 0644 |
|
barrier.h | File | 2.55 KB | 0644 |
|
bfin-global.h | File | 2.8 KB | 0644 |
|
bfin-lq035q1.h | File | 868 B | 0644 |
|
bfin5xx_spi.h | File | 2.07 KB | 0644 |
|
bfin_can.h | File | 36.04 KB | 0644 |
|
bfin_dma.h | File | 5.46 KB | 0644 |
|
bfin_pfmon.h | File | 1.11 KB | 0644 |
|
bfin_ppi.h | File | 9.01 KB | 0644 |
|
bfin_sdh.h | File | 7.2 KB | 0644 |
|
bfin_serial.h | File | 17.02 KB | 0644 |
|
bfin_simple_timer.h | File | 949 B | 0644 |
|
bfin_sport.h | File | 1.21 KB | 0644 |
|
bfin_sport3.h | File | 5.47 KB | 0644 |
|
bfin_twi.h | File | 6.25 KB | 0644 |
|
bfin_watchdog.h | File | 696 B | 0644 |
|
bfrom.h | File | 3.36 KB | 0644 |
|
bitops.h | File | 3.45 KB | 0644 |
|
blackfin.h | File | 1.55 KB | 0644 |
|
bug.h | File | 1.49 KB | 0644 |
|
cache.h | File | 1.47 KB | 0644 |
|
cacheflush.h | File | 3.79 KB | 0644 |
|
cdef_LPBlackfin.h | File | 18.93 KB | 0644 |
|
checksum.h | File | 899 B | 0644 |
|
clkdev.h | File | 318 B | 0644 |
|
clocks.h | File | 1.66 KB | 0644 |
|
cmpxchg.h | File | 3.2 KB | 0644 |
|
context.S | File | 5.92 KB | 0644 |
|
cplb.h | File | 4.86 KB | 0644 |
|
cplbinit.h | File | 1.6 KB | 0644 |
|
cpu.h | File | 443 B | 0644 |
|
def_LPBlackfin.h | File | 28.6 KB | 0644 |
|
delay.h | File | 917 B | 0644 |
|
dma-mapping.h | File | 1.09 KB | 0644 |
|
dma.h | File | 9.28 KB | 0644 |
|
dpmc.h | File | 18.24 KB | 0644 |
|
early_printk.h | File | 1.09 KB | 0644 |
|
elf.h | File | 4.88 KB | 0644 |
|
entry.h | File | 5.27 KB | 0644 |
|
exec.h | File | 37 B | 0644 |
|
fixed_code.h | File | 806 B | 0644 |
|
flat.h | File | 1.41 KB | 0644 |
|
ftrace.h | File | 1.37 KB | 0644 |
|
gpio.h | File | 5.91 KB | 0644 |
|
gptimers.h | File | 8.95 KB | 0644 |
|
hardirq.h | File | 301 B | 0644 |
|
io.h | File | 1.52 KB | 0644 |
|
ipipe.h | File | 5.81 KB | 0644 |
|
ipipe_base.h | File | 2.38 KB | 0644 |
|
irq.h | File | 879 B | 0644 |
|
irq_handler.h | File | 1.93 KB | 0644 |
|
irqflags.h | File | 7.13 KB | 0644 |
|
kgdb.h | File | 3.23 KB | 0644 |
|
l1layout.h | File | 879 B | 0644 |
|
linkage.h | File | 205 B | 0644 |
|
mem_init.h | File | 13.1 KB | 0644 |
|
mem_map.h | File | 1.73 KB | 0644 |
|
mmu.h | File | 713 B | 0644 |
|
mmu_context.h | File | 5.35 KB | 0644 |
|
module.h | File | 410 B | 0644 |
|
nand.h | File | 895 B | 0644 |
|
nmi.h | File | 195 B | 0644 |
|
page.h | File | 546 B | 0644 |
|
page_offset.h | File | 192 B | 0644 |
|
pci.h | File | 310 B | 0644 |
|
pda.h | File | 1.86 KB | 0644 |
|
perf_event.h | File | 23 B | 0644 |
|
pgtable.h | File | 3 KB | 0644 |
|
pm.h | File | 590 B | 0644 |
|
portmux.h | File | 16.38 KB | 0644 |
|
processor.h | File | 3.21 KB | 0644 |
|
pseudo_instructions.h | File | 391 B | 0644 |
|
ptrace.h | File | 1.19 KB | 0644 |
|
reboot.h | File | 446 B | 0644 |
|
rwlock.h | File | 142 B | 0644 |
|
scb.h | File | 445 B | 0644 |
|
sections.h | File | 2 KB | 0644 |
|
segment.h | File | 226 B | 0644 |
|
smp.h | File | 1.34 KB | 0644 |
|
spinlock.h | File | 1.87 KB | 0644 |
|
spinlock_types.h | File | 495 B | 0644 |
|
string.h | File | 1.04 KB | 0644 |
|
switch_to.h | File | 997 B | 0644 |
|
syscall.h | File | 2.15 KB | 0644 |
|
thread_info.h | File | 2.66 KB | 0644 |
|
time.h | File | 1.33 KB | 0644 |
|
timex.h | File | 477 B | 0644 |
|
tlb.h | File | 481 B | 0644 |
|
tlbflush.h | File | 88 B | 0644 |
|
trace.h | File | 2.67 KB | 0644 |
|
traps.h | File | 4.87 KB | 0644 |
|
uaccess.h | File | 5.79 KB | 0644 |
|
unistd.h | File | 523 B | 0644 |
|
vga.h | File | 29 B | 0644 |
|