patch-2.4.21 linux-2.4.21/include/asm-parisc/system_irqsave.h

• Lines: 29
• Date: 2003-06-13 07:51:38.000000000 -0700
• Orig file: linux-2.4.20/include/asm-parisc/system_irqsave.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.20/include/asm-parisc/system_irqsave.h linux-2.4.21/include/asm-parisc/system_irqsave.h
@@ -0,0 +1,28 @@
+#ifndef __PARISC_SYSTEM_IRQSAVE_H
+#define __PARISC_SYSTEM_IRQSAVE_H
+
+/* interrupt control */
+#define __save_flags(x)	__asm__ __volatile__("ssm 0, %0" : "=r" (x) : : "memory")
+#define __restore_flags(x) __asm__ __volatile__("mtsm %0" : : "r" (x) : "memory")
+#define __cli()	__asm__ __volatile__("rsm %0,%%r0\n" : : "i" (PSW_I) : "memory" )
+#define __sti()	__asm__ __volatile__("ssm %0,%%r0\n" : : "i" (PSW_I) : "memory" )
+
+#define __save_and_cli(x)  do { __save_flags(x); __cli(); } while(0);
+#define __save_and_sti(x)  do { __save_flags(x); __sti(); } while(0);
+
+/* For spinlocks etc */
+#if 0
+#define local_irq_save(x) \
+	__asm__ __volatile__("rsm %1,%0" : "=r" (x) :"i" (PSW_I) : "memory" )
+#define local_irq_set(x) \
+#       "Warning local_irq_set(x) is not yet defined"
+#else
+#define local_irq_save(x)  __save_and_cli(x)
+#define local_irq_set(x)   __save_and_sti(x)
+#endif
+
+#define local_irq_restore(x) __restore_flags(x)
+#define local_irq_disable() __cli()
+#define local_irq_enable()  __sti()
+
+#endif /* __PARISC_SYSTEM_IRQSAVE_H */