Merge tag 'xtensa-for-next-20160111' of git://github.com/jcmvbkbc/linux-xtensa

Xtensa improvements for 4.5:

- control whether perf IRQ is treated as NMI from Kconfig;
- implement ioremap for regions outside KIO segment.

3 files changed, 21 insertions, 16 deletions

diff --git a/arch/xtensa/include/asm/io.h b/arch/xtensa/include/asm/io.h
index 74fed0b4e2c2..c38e5a732d86 100644
--- a/arch/xtensa/include/asm/io.h
+++ b/arch/xtensa/include/asm/io.h
@@ -25,9 +25,12 @@
 
 #ifdef CONFIG_MMU
 
+void __iomem *xtensa_ioremap_nocache(unsigned long addr, unsigned long size);
+void __iomem *xtensa_ioremap_cache(unsigned long addr, unsigned long size);
+void xtensa_iounmap(volatile void __iomem *addr);
+
 /*
  * Return the virtual address for the specified bus memory.
- * Note that we currently don't support any address outside the KIO segment.
  */
 static inline void __iomem *ioremap_nocache(unsigned long offset,
                 unsigned long size)
@@ -36,7 +39,7 @@ static inline void __iomem *ioremap_nocache(unsigned long offset,
             && offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
                 return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_BYPASS_VADDR);
         else
-                BUG();
+                return xtensa_ioremap_nocache(offset, size);
 }
 
 static inline void __iomem *ioremap_cache(unsigned long offset,
@@ -46,7 +49,7 @@ static inline void __iomem *ioremap_cache(unsigned long offset,
             && offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
                 return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_CACHED_VADDR);
         else
-                BUG();
+                return xtensa_ioremap_cache(offset, size);
 }
 #define ioremap_cache ioremap_cache
 
@@ -60,6 +63,13 @@ static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
 
 static inline void iounmap(volatile void __iomem *addr)
 {
+        unsigned long va = (unsigned long) addr;
+
+        if (!(va >= XCHAL_KIO_CACHED_VADDR &&
+              va - XCHAL_KIO_CACHED_VADDR < XCHAL_KIO_SIZE) &&
+            !(va >= XCHAL_KIO_BYPASS_VADDR &&
+              va - XCHAL_KIO_BYPASS_VADDR < XCHAL_KIO_SIZE))
+                xtensa_iounmap(addr);
 }
 
 #define virt_to_bus     virt_to_phys
diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h
index 83e2e4bc01ba..744ecf0dc3a4 100644
--- a/arch/xtensa/include/asm/processor.h
+++ b/arch/xtensa/include/asm/processor.h
@@ -78,22 +78,20 @@
 #define XTENSA_INTLEVEL_MASK(level) _XTENSA_INTLEVEL_MASK(level)
 #define _XTENSA_INTLEVEL_MASK(level) (XCHAL_INTLEVEL##level##_MASK)
 
-#define IS_POW2(v) (((v) & ((v) - 1)) == 0)
+#define XTENSA_INTLEVEL_ANDBELOW_MASK(l) _XTENSA_INTLEVEL_ANDBELOW_MASK(l)
+#define _XTENSA_INTLEVEL_ANDBELOW_MASK(l) (XCHAL_INTLEVEL##l##_ANDBELOW_MASK)
 
 #define PROFILING_INTLEVEL XTENSA_INT_LEVEL(XCHAL_PROFILING_INTERRUPT)
 
 /* LOCKLEVEL defines the interrupt level that masks all
  * general-purpose interrupts.
  */
-#if defined(CONFIG_XTENSA_VARIANT_HAVE_PERF_EVENTS) && \
-        defined(XCHAL_PROFILING_INTERRUPT) && \
-        PROFILING_INTLEVEL == XCHAL_EXCM_LEVEL && \
-        XCHAL_EXCM_LEVEL > 1 && \
-        IS_POW2(XTENSA_INTLEVEL_MASK(PROFILING_INTLEVEL))
-#define LOCKLEVEL (XCHAL_EXCM_LEVEL - 1)
+#if defined(CONFIG_XTENSA_FAKE_NMI) && defined(XCHAL_PROFILING_INTERRUPT)
+#define LOCKLEVEL (PROFILING_INTLEVEL - 1)
 #else
 #define LOCKLEVEL XCHAL_EXCM_LEVEL
 #endif
+
 #define TOPLEVEL XCHAL_EXCM_LEVEL
 #define XTENSA_FAKE_NMI (LOCKLEVEL < TOPLEVEL)
 
diff --git a/arch/xtensa/include/asm/timex.h b/arch/xtensa/include/asm/timex.h
index ca929e6a38b5..f9b389d4e973 100644
--- a/arch/xtensa/include/asm/timex.h
+++ b/arch/xtensa/include/asm/timex.h
@@ -12,19 +12,16 @@
 #include <asm/processor.h>
 #include <linux/stringify.h>
 
-#define _INTLEVEL(x)    XCHAL_INT ## x ## _LEVEL
-#define INTLEVEL(x)     _INTLEVEL(x)
-
 #if XCHAL_NUM_TIMERS > 0 && \
-        INTLEVEL(XCHAL_TIMER0_INTERRUPT) <= XCHAL_EXCM_LEVEL
+        XTENSA_INT_LEVEL(XCHAL_TIMER0_INTERRUPT) <= XCHAL_EXCM_LEVEL
 # define LINUX_TIMER     0
 # define LINUX_TIMER_INT XCHAL_TIMER0_INTERRUPT
 #elif XCHAL_NUM_TIMERS > 1 && \
-        INTLEVEL(XCHAL_TIMER1_INTERRUPT) <= XCHAL_EXCM_LEVEL
+        XTENSA_INT_LEVEL(XCHAL_TIMER1_INTERRUPT) <= XCHAL_EXCM_LEVEL
 # define LINUX_TIMER     1
 # define LINUX_TIMER_INT XCHAL_TIMER1_INTERRUPT
 #elif XCHAL_NUM_TIMERS > 2 && \
-        INTLEVEL(XCHAL_TIMER2_INTERRUPT) <= XCHAL_EXCM_LEVEL
+        XTENSA_INT_LEVEL(XCHAL_TIMER2_INTERRUPT) <= XCHAL_EXCM_LEVEL
 # define LINUX_TIMER     2
 # define LINUX_TIMER_INT XCHAL_TIMER2_INTERRUPT
 #else