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-rw-r--r--include/asm-arm/system.h133
1 files changed, 5 insertions, 128 deletions
diff --git a/include/asm-arm/system.h b/include/asm-arm/system.h
index 0947cbf9b69a..c19c5b009f71 100644
--- a/include/asm-arm/system.h
+++ b/include/asm-arm/system.h
@@ -207,130 +207,7 @@ static inline void sched_cacheflush(void)
207{ 207{
208} 208}
209 209
210/* 210#include <linux/irqflags.h>
211 * CPU interrupt mask handling.
212 */
213#if __LINUX_ARM_ARCH__ >= 6
214
215#define local_irq_save(x) \
216 ({ \
217 __asm__ __volatile__( \
218 "mrs %0, cpsr @ local_irq_save\n" \
219 "cpsid i" \
220 : "=r" (x) : : "memory", "cc"); \
221 })
222
223#define local_irq_enable() __asm__("cpsie i @ __sti" : : : "memory", "cc")
224#define local_irq_disable() __asm__("cpsid i @ __cli" : : : "memory", "cc")
225#define local_fiq_enable() __asm__("cpsie f @ __stf" : : : "memory", "cc")
226#define local_fiq_disable() __asm__("cpsid f @ __clf" : : : "memory", "cc")
227
228#else
229
230/*
231 * Save the current interrupt enable state & disable IRQs
232 */
233#define local_irq_save(x) \
234 ({ \
235 unsigned long temp; \
236 (void) (&temp == &x); \
237 __asm__ __volatile__( \
238 "mrs %0, cpsr @ local_irq_save\n" \
239" orr %1, %0, #128\n" \
240" msr cpsr_c, %1" \
241 : "=r" (x), "=r" (temp) \
242 : \
243 : "memory", "cc"); \
244 })
245
246/*
247 * Enable IRQs
248 */
249#define local_irq_enable() \
250 ({ \
251 unsigned long temp; \
252 __asm__ __volatile__( \
253 "mrs %0, cpsr @ local_irq_enable\n" \
254" bic %0, %0, #128\n" \
255" msr cpsr_c, %0" \
256 : "=r" (temp) \
257 : \
258 : "memory", "cc"); \
259 })
260
261/*
262 * Disable IRQs
263 */
264#define local_irq_disable() \
265 ({ \
266 unsigned long temp; \
267 __asm__ __volatile__( \
268 "mrs %0, cpsr @ local_irq_disable\n" \
269" orr %0, %0, #128\n" \
270" msr cpsr_c, %0" \
271 : "=r" (temp) \
272 : \
273 : "memory", "cc"); \
274 })
275
276/*
277 * Enable FIQs
278 */
279#define local_fiq_enable() \
280 ({ \
281 unsigned long temp; \
282 __asm__ __volatile__( \
283 "mrs %0, cpsr @ stf\n" \
284" bic %0, %0, #64\n" \
285" msr cpsr_c, %0" \
286 : "=r" (temp) \
287 : \
288 : "memory", "cc"); \
289 })
290
291/*
292 * Disable FIQs
293 */
294#define local_fiq_disable() \
295 ({ \
296 unsigned long temp; \
297 __asm__ __volatile__( \
298 "mrs %0, cpsr @ clf\n" \
299" orr %0, %0, #64\n" \
300" msr cpsr_c, %0" \
301 : "=r" (temp) \
302 : \
303 : "memory", "cc"); \
304 })
305
306#endif
307
308/*
309 * Save the current interrupt enable state.
310 */
311#define local_save_flags(x) \
312 ({ \
313 __asm__ __volatile__( \
314 "mrs %0, cpsr @ local_save_flags" \
315 : "=r" (x) : : "memory", "cc"); \
316 })
317
318/*
319 * restore saved IRQ & FIQ state
320 */
321#define local_irq_restore(x) \
322 __asm__ __volatile__( \
323 "msr cpsr_c, %0 @ local_irq_restore\n" \
324 : \
325 : "r" (x) \
326 : "memory", "cc")
327
328#define irqs_disabled() \
329({ \
330 unsigned long flags; \
331 local_save_flags(flags); \
332 (int)(flags & PSR_I_BIT); \
333})
334 211
335#ifdef CONFIG_SMP 212#ifdef CONFIG_SMP
336 213
@@ -405,17 +282,17 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size
405#error SMP is not supported on this platform 282#error SMP is not supported on this platform
406#endif 283#endif
407 case 1: 284 case 1:
408 local_irq_save(flags); 285 raw_local_irq_save(flags);
409 ret = *(volatile unsigned char *)ptr; 286 ret = *(volatile unsigned char *)ptr;
410 *(volatile unsigned char *)ptr = x; 287 *(volatile unsigned char *)ptr = x;
411 local_irq_restore(flags); 288 raw_local_irq_restore(flags);
412 break; 289 break;
413 290
414 case 4: 291 case 4:
415 local_irq_save(flags); 292 raw_local_irq_save(flags);
416 ret = *(volatile unsigned long *)ptr; 293 ret = *(volatile unsigned long *)ptr;
417 *(volatile unsigned long *)ptr = x; 294 *(volatile unsigned long *)ptr = x;
418 local_irq_restore(flags); 295 raw_local_irq_restore(flags);
419 break; 296 break;
420#else 297#else
421 case 1: 298 case 1: