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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-12-15 14:52:16 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-12-15 14:52:16 -0300
commit8d91c1e411f55d7ea91b1183a2e9f8088fb4d5be (patch)
treee9891aa6c295060d065adffd610c4f49ecf884f3 /arch/xtensa/include/asm/irqflags.h
parenta71852147516bc1cb5b0b3cbd13639bfd4022dc8 (diff)
Linux-libre 4.3.2-gnu
Diffstat (limited to 'arch/xtensa/include/asm/irqflags.h')
-rw-r--r--arch/xtensa/include/asm/irqflags.h22
1 files changed, 21 insertions, 1 deletions
diff --git a/arch/xtensa/include/asm/irqflags.h b/arch/xtensa/include/asm/irqflags.h
index ea36674c6..8e090c709 100644
--- a/arch/xtensa/include/asm/irqflags.h
+++ b/arch/xtensa/include/asm/irqflags.h
@@ -6,6 +6,7 @@
* for more details.
*
* Copyright (C) 2001 - 2005 Tensilica Inc.
+ * Copyright (C) 2015 Cadence Design Systems Inc.
*/
#ifndef _XTENSA_IRQFLAGS_H
@@ -23,8 +24,27 @@ static inline unsigned long arch_local_save_flags(void)
static inline unsigned long arch_local_irq_save(void)
{
unsigned long flags;
- asm volatile("rsil %0, "__stringify(LOCKLEVEL)
+#if XTENSA_FAKE_NMI
+#if defined(CONFIG_DEBUG_KERNEL) && (LOCKLEVEL | TOPLEVEL) >= XCHAL_DEBUGLEVEL
+ unsigned long tmp;
+
+ asm volatile("rsr %0, ps\t\n"
+ "extui %1, %0, 0, 4\t\n"
+ "bgei %1, "__stringify(LOCKLEVEL)", 1f\t\n"
+ "rsil %0, "__stringify(LOCKLEVEL)"\n"
+ "1:"
+ : "=a" (flags), "=a" (tmp) :: "memory");
+#else
+ asm volatile("rsr %0, ps\t\n"
+ "or %0, %0, %1\t\n"
+ "xsr %0, ps\t\n"
+ "rsync"
+ : "=&a" (flags) : "a" (LOCKLEVEL) : "memory");
+#endif
+#else
+ asm volatile("rsil %0, "__stringify(LOCKLEVEL)
: "=a" (flags) :: "memory");
+#endif
return flags;
}