Blackfin arch: move out irq related functions

move irq related functions into asm/irq.h and out of the mondo asm/system.h

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 91 insertions, 1 deletions

diff --git a/arch/blackfin/include/asm/irq.h b/arch/blackfin/include/asm/irq.h
index 9377816fa18a..e43c20583fcd 100644
--- a/arch/blackfin/include/asm/irq.h
+++ b/arch/blackfin/include/asm/irq.h
@@ -19,11 +19,101 @@
 
 /* SYS_IRQS and NR_IRQS are defined in <mach-bf5xx/irq.h>*/
 #include <mach/irq.h>
-#include <asm/ptrace.h>
+#include <asm/pda.h>
+#include <asm/processor.h>
 
 static __inline__ int irq_canonicalize(int irq)
 {
         return irq;
 }
 
+/*
+ * Interrupt configuring macros.
+ */
+#define local_irq_disable() \
+        do { \
+                int __tmp_dummy; \
+                __asm__ __volatile__( \
+                        "cli %0;" \
+                        : "=d" (__tmp_dummy) \
+                ); \
+        } while (0)
+
+#if ANOMALY_05000244 && defined(CONFIG_BFIN_ICACHE)
+# define NOP_PAD_ANOMALY_05000244 "nop; nop;"
+#else
+# define NOP_PAD_ANOMALY_05000244
+#endif
+
+#ifdef CONFIG_SMP
+/* Forward decl needed due to cdef inter dependencies */
+static inline uint32_t __pure bfin_dspid(void);
+# define blackfin_core_id() (bfin_dspid() & 0xff)
+# define irq_flags cpu_pda[blackfin_core_id()].imask
+#else
+extern unsigned long irq_flags;
+#endif
+
+#define local_irq_enable() \
+        __asm__ __volatile__( \
+                "sti %0;" \
+                : \
+                : "d" (irq_flags) \
+        )
+
+#define idle_with_irq_disabled() \
+        __asm__ __volatile__( \
+                NOP_PAD_ANOMALY_05000244 \
+                ".align 8;" \
+                "sti %0;" \
+                "idle;" \
+                : \
+                : "d" (irq_flags) \
+        )
+
+#ifdef CONFIG_DEBUG_HWERR
+# define __save_and_cli(x) \
+        __asm__ __volatile__( \
+                "cli %0;" \
+                "sti %1;" \
+                : "=&d" (x) \
+                : "d" (0x3F) \
+        )
+#else
+# define __save_and_cli(x) \
+        __asm__ __volatile__( \
+                "cli %0;" \
+                : "=&d" (x) \
+        )
+#endif
+
+#define local_save_flags(x) \
+        __asm__ __volatile__( \
+                "cli %0;" \
+                "sti %0;" \
+                : "=d" (x) \
+        )
+
+#ifdef CONFIG_DEBUG_HWERR
+#define irqs_enabled_from_flags(x) (((x) & ~0x3f) != 0)
+#else
+#define irqs_enabled_from_flags(x) ((x) != 0x1f)
+#endif
+
+#define local_irq_restore(x) \
+        do { \
+                if (irqs_enabled_from_flags(x)) \
+                        local_irq_enable(); \
+        } while (0)
+
+/* For spinlocks etc */
+#define local_irq_save(x) __save_and_cli(x)
+
+#define irqs_disabled()                         \
+({                                              \
+        unsigned long flags;                    \
+        local_save_flags(flags);                \
+        !irqs_enabled_from_flags(flags);        \
+})
+
 #endif                          /* _BFIN_IRQ_H_ */