This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / asm-arm / irqflags.h

diff --git a/include/asm-arm/irqflags.h b/include/asm-arm/irqflags.h
new file mode 100644 (file)
index 0000000..6d09974
--- /dev/null
+++ b/include/asm-arm/irqflags.h
@@ -0,0 +1,132 @@
+#ifndef __ASM_ARM_IRQFLAGS_H
+#define __ASM_ARM_IRQFLAGS_H
+
+#ifdef __KERNEL__
+
+#include <asm/ptrace.h>
+
+/*
+ * CPU interrupt mask handling.
+ */
+#if __LINUX_ARM_ARCH__ >= 6
+
+#define raw_local_irq_save(x)                                  \
+       ({                                                      \
+       __asm__ __volatile__(                                   \
+       "mrs    %0, cpsr                @ local_irq_save\n"     \
+       "cpsid  i"                                              \
+       : "=r" (x) : : "memory", "cc");                         \
+       })
+
+#define raw_local_irq_enable()  __asm__("cpsie i       @ __sti" : : : "memory", "cc")
+#define raw_local_irq_disable() __asm__("cpsid i       @ __cli" : : : "memory", "cc")
+#define local_fiq_enable()  __asm__("cpsie f   @ __stf" : : : "memory", "cc")
+#define local_fiq_disable() __asm__("cpsid f   @ __clf" : : : "memory", "cc")
+
+#else
+
+/*
+ * Save the current interrupt enable state & disable IRQs
+ */
+#define raw_local_irq_save(x)                                  \
+       ({                                                      \
+               unsigned long temp;                             \
+               (void) (&temp == &x);                           \
+       __asm__ __volatile__(                                   \
+       "mrs    %0, cpsr                @ local_irq_save\n"     \
+"      orr     %1, %0, #128\n"                                 \
+"      msr     cpsr_c, %1"                                     \
+       : "=r" (x), "=r" (temp)                                 \
+       :                                                       \
+       : "memory", "cc");                                      \
+       })
+       
+/*
+ * Enable IRQs
+ */
+#define raw_local_irq_enable()                                 \
+       ({                                                      \
+               unsigned long temp;                             \
+       __asm__ __volatile__(                                   \
+       "mrs    %0, cpsr                @ local_irq_enable\n"   \
+"      bic     %0, %0, #128\n"                                 \
+"      msr     cpsr_c, %0"                                     \
+       : "=r" (temp)                                           \
+       :                                                       \
+       : "memory", "cc");                                      \
+       })
+
+/*
+ * Disable IRQs
+ */
+#define raw_local_irq_disable()                                        \
+       ({                                                      \
+               unsigned long temp;                             \
+       __asm__ __volatile__(                                   \
+       "mrs    %0, cpsr                @ local_irq_disable\n"  \
+"      orr     %0, %0, #128\n"                                 \
+"      msr     cpsr_c, %0"                                     \
+       : "=r" (temp)                                           \
+       :                                                       \
+       : "memory", "cc");                                      \
+       })
+
+/*
+ * Enable FIQs
+ */
+#define local_fiq_enable()                                     \
+       ({                                                      \
+               unsigned long temp;                             \
+       __asm__ __volatile__(                                   \
+       "mrs    %0, cpsr                @ stf\n"                \
+"      bic     %0, %0, #64\n"                                  \
+"      msr     cpsr_c, %0"                                     \
+       : "=r" (temp)                                           \
+       :                                                       \
+       : "memory", "cc");                                      \
+       })
+
+/*
+ * Disable FIQs
+ */
+#define local_fiq_disable()                                    \
+       ({                                                      \
+               unsigned long temp;                             \
+       __asm__ __volatile__(                                   \
+       "mrs    %0, cpsr                @ clf\n"                \
+"      orr     %0, %0, #64\n"                                  \
+"      msr     cpsr_c, %0"                                     \
+       : "=r" (temp)                                           \
+       :                                                       \
+       : "memory", "cc");                                      \
+       })
+
+#endif
+
+/*
+ * Save the current interrupt enable state.
+ */
+#define raw_local_save_flags(x)                                        \
+       ({                                                      \
+       __asm__ __volatile__(                                   \
+       "mrs    %0, cpsr                @ local_save_flags"     \
+       : "=r" (x) : : "memory", "cc");                         \
+       })
+
+/*
+ * restore saved IRQ & FIQ state
+ */
+#define raw_local_irq_restore(x)                               \
+       __asm__ __volatile__(                                   \
+       "msr    cpsr_c, %0              @ local_irq_restore\n"  \
+       :                                                       \
+       : "r" (x)                                               \
+       : "memory", "cc")
+
+#define raw_irqs_disabled_flags(flags) \
+({                                     \
+       (int)((flags) & PSR_I_BIT);     \
+})
+
+#endif
+#endif