microblaze_v8: headers for irq

Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>

4 files changed, 153 insertions, 0 deletions

diff --git a/arch/microblaze/include/asm/hardirq.h b/arch/microblaze/include/asm/hardirq.h
new file mode 100644
index 000000000000..0f2d6b013e11
--- /dev/null
+++ b/arch/microblaze/include/asm/hardirq.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_HARDIRQ_H
+#define _ASM_MICROBLAZE_HARDIRQ_H
+
+#include <linux/cache.h>
+#include <linux/irq.h>
+#include <asm/irq.h>
+#include <asm/current.h>
+#include <linux/ptrace.h>
+
+/* should be defined in each interrupt controller driver */
+extern unsigned int get_irq(struct pt_regs *regs);
+
+typedef struct {
+        unsigned int __softirq_pending;
+} ____cacheline_aligned irq_cpustat_t;
+
+void ack_bad_irq(unsigned int irq);
+
+#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
+
+#endif /* _ASM_MICROBLAZE_HARDIRQ_H */
diff --git a/arch/microblaze/include/asm/hw_irq.h b/arch/microblaze/include/asm/hw_irq.h
new file mode 100644
index 000000000000..e69de29bb2d1
--- /dev/null
+++ b/arch/microblaze/include/asm/hw_irq.h
diff --git a/arch/microblaze/include/asm/irq_regs.h b/arch/microblaze/include/asm/irq_regs.h
new file mode 100644
index 000000000000..3dd9c0b70270
--- /dev/null
+++ b/arch/microblaze/include/asm/irq_regs.h
@@ -0,0 +1 @@
+#include <asm-generic/irq_regs.h>
diff --git a/arch/microblaze/include/asm/irqflags.h b/arch/microblaze/include/asm/irqflags.h
new file mode 100644
index 000000000000..dea65645a4f8
--- /dev/null
+++ b/arch/microblaze/include/asm/irqflags.h
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_MICROBLAZE_IRQFLAGS_H
+#define _ASM_MICROBLAZE_IRQFLAGS_H
+
+#include <linux/irqflags.h>
+
+# if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
+
+# define local_irq_save(flags)                          \
+        do {                                            \
+                asm volatile ("# local_irq_save \n\t"   \
+                                "msrclr %0, %1  \n\t"   \
+                                "nop    \n\t"           \
+                                : "=r"(flags)           \
+                                : "i"(MSR_IE)           \
+                                : "memory");            \
+        } while (0)
+
+# define local_irq_disable()                                    \
+        do {                                                    \
+                asm volatile ("# local_irq_disable \n\t"        \
+                                "msrclr r0, %0 \n\t"            \
+                                "nop    \n\t"                   \
+                                :                               \
+                                : "i"(MSR_IE)                   \
+                                : "memory");                    \
+        } while (0)
+
+# define local_irq_enable()                                     \
+        do {                                                    \
+                asm volatile ("# local_irq_enable \n\t"         \
+                                "msrset r0, %0 \n\t"            \
+                                "nop    \n\t"                   \
+                                :                               \
+                                : "i"(MSR_IE)                   \
+                                : "memory");                    \
+        } while (0)
+
+# else /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR == 0 */
+
+# define local_irq_save(flags)                                  \
+        do {                                                    \
+                register unsigned tmp;                          \
+                asm volatile ("# local_irq_save \n\t"           \
+                                "mfs    %0, rmsr \n\t"          \
+                                "nop \n\t"                      \
+                                "andi   %1, %0, %2 \n\t"        \
+                                "mts    rmsr, %1 \n\t"          \
+                                "nop \n\t"                      \
+                                : "=r"(flags), "=r" (tmp)       \
+                                : "i"(~MSR_IE)                  \
+                                : "memory");                    \
+        } while (0)
+
+# define local_irq_disable()                                    \
+        do {                                                    \
+                register unsigned tmp;                          \
+                asm volatile ("# local_irq_disable \n\t"        \
+                                "mfs    %0, rmsr \n\t"          \
+                                "nop \n\t"                      \
+                                "andi   %0, %0, %1 \n\t"        \
+                                "mts    rmsr, %0 \n\t"          \
+                                "nop \n\t"                      \
+                                : "=r"(tmp)                     \
+                                : "i"(~MSR_IE)                  \
+                                : "memory");                    \
+        } while (0)
+
+# define local_irq_enable()                                     \
+        do {                                                    \
+                register unsigned tmp;                          \
+                asm volatile ("# local_irq_enable \n\t"         \
+                                "mfs    %0, rmsr \n\t"          \
+                                "nop \n\t"                      \
+                                "ori    %0, %0, %1 \n\t"        \
+                                "mts    rmsr, %0 \n\t"          \
+                                "nop \n\t"                      \
+                                : "=r"(tmp)                     \
+                                : "i"(MSR_IE)                   \
+                                : "memory");                    \
+        } while (0)
+
+# endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
+
+#define local_save_flags(flags)                                 \
+        do {                                                    \
+                asm volatile ("# local_save_flags \n\t"         \
+                                "mfs    %0, rmsr \n\t"          \
+                                "nop    \n\t"                   \
+                                : "=r"(flags)                   \
+                                :                               \
+                                : "memory");                    \
+        } while (0)
+
+#define local_irq_restore(flags)                        \
+        do {                                            \
+                asm volatile ("# local_irq_restore \n\t"\
+                                "mts    rmsr, %0 \n\t"  \
+                                "nop    \n\t"           \
+                                :                       \
+                                : "r"(flags)            \
+                                : "memory");            \
+        } while (0)
+
+static inline int irqs_disabled(void)
+{
+        unsigned long flags;
+
+        local_save_flags(flags);
+        return ((flags & MSR_IE) == 0);
+}
+
+#define raw_irqs_disabled irqs_disabled
+#define raw_irqs_disabled_flags(flags)  ((flags) == 0)
+
+#endif /* _ASM_MICROBLAZE_IRQFLAGS_H */