Merge tag 'xtensa-next-20121008' of git://github.com/czankel/xtensa-linux

Pull Xtensa patchset from Chris Zankel:
 "The Xtensa tree has been broken for some time now, and this patchset
  brings it back to life.  It has been part of the linux-next tree for
  some time.

  Most changes are inside the xtensa subdirectory; the other changes
  mostly add another rule to already existing #ifdefs to exclude Xtensa,
  where required.  The only 'common' change is to add two more sections
  ('.xt.prop' and '.xt.lit') to the white list in modpost."

* tag 'xtensa-next-20121008' of git://github.com/czankel/xtensa-linux: (27 commits)
  xtensa: Setup CROSS_COMPILE at the top
  xtensa: drop CONFIG_EMBEDDED_RAMDISK
  xtensa: fix TIOCGSERIAL and TIOCSSERIAL definitions
  xtensa: provide dummy gcc intrinsics
  xtensa: add missing symbol exports
  parport: disable for xtensa arch
  xtensa: rename MISC SR definition to avoid name clashes
  hisax: disable build for big-endian xtensa
  xtensa: fix CODA build
  xtensa: fix parallel make
  xtensa: ISS: drop unused io.c
  xtensa: ISS: exit simulator in case of halt or poweroff
  xtensa: ISS: change keyboard polling rate
  xtensa: ISS: add platform_pcibios_init
  xtensa: ISS: add dummy serial.h for ISS platform
  xtensa: change default platform clock frequency to 10MHz
  xtensa: add ARCH_WANT_OPTIONAL_GPIOLIB to xtensa config
  xtensa: set NO_IOPORT to 'n' by default
  xtensa: adopt generic io routines
  xtensa: fix ioremap
  ...

3 files changed, 24 insertions, 154 deletions

diff --git a/arch/xtensa/include/asm/io.h b/arch/xtensa/include/asm/io.h
index 4beb43c087d3..e6be5b9091c2 100644
--- a/arch/xtensa/include/asm/io.h
+++ b/arch/xtensa/include/asm/io.h
@@ -25,184 +25,54 @@
 #define XCHAL_KIO_SIZE          0x10000000
 
 #define IOADDR(x)               (XCHAL_KIO_BYPASS_VADDR + (x))
+#define IO_SPACE_LIMIT ~0
 
+#ifdef CONFIG_MMU
 /*
- * swap functions to change byte order from little-endian to big-endian and
- * vice versa.
- */
-
-static inline unsigned short _swapw (unsigned short v)
-{
-        return (v << 8) | (v >> 8);
-}
-
-static inline unsigned int _swapl (unsigned int v)
-{
-        return (v << 24) | ((v & 0xff00) << 8) | ((v >> 8) & 0xff00) | (v >> 24);
-}
-
-/*
- * Change virtual addresses to physical addresses and vv.
- * These are trivial on the 1:1 Linux/Xtensa mapping
- */
-
-static inline unsigned long virt_to_phys(volatile void * address)
-{
-        return __pa(address);
-}
-
-static inline void * phys_to_virt(unsigned long address)
-{
-        return __va(address);
-}
-
-/*
- * virt_to_bus and bus_to_virt are deprecated.
- */
-
-#define virt_to_bus(x)  virt_to_phys(x)
-#define bus_to_virt(x)  phys_to_virt(x)
-
-/*
- * Return the virtual (cached) address for the specified bus memory.
+ * 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 *ioremap(unsigned long offset, unsigned long size)
+static inline void __iomem *ioremap_nocache(unsigned long offset,
+                unsigned long size)
 {
-#ifdef CONFIG_MMU
         if (offset >= XCHAL_KIO_PADDR
-            && offset < XCHAL_KIO_PADDR + XCHAL_KIO_SIZE)
+            && offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
                 return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_BYPASS_VADDR);
         else
                 BUG();
-#else
-        return (void *)offset;
-#endif
 }
 
-static inline void *ioremap_nocache(unsigned long offset, unsigned long size)
+static inline void __iomem *ioremap_cache(unsigned long offset,
+                unsigned long size)
 {
-#ifdef CONFIG_MMU
         if (offset >= XCHAL_KIO_PADDR
-            && offset < XCHAL_KIO_PADDR + XCHAL_KIO_SIZE)
+            && offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
                 return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_CACHED_VADDR);
         else
                 BUG();
-#else
-        return (void *)offset;
-#endif
-}
-
-static inline void iounmap(void *addr)
-{
 }
 
-/*
- * Generic I/O
- */
-
-#define readb(addr) \
-        ({ unsigned char __v = (*(volatile unsigned char *)(addr)); __v; })
-#define readw(addr) \
-        ({ unsigned short __v = (*(volatile unsigned short *)(addr)); __v; })
-#define readl(addr) \
-        ({ unsigned int __v = (*(volatile unsigned int *)(addr)); __v; })
-#define writeb(b, addr) (void)((*(volatile unsigned char *)(addr)) = (b))
-#define writew(b, addr) (void)((*(volatile unsigned short *)(addr)) = (b))
-#define writel(b, addr) (void)((*(volatile unsigned int *)(addr)) = (b))
+#define ioremap_wc ioremap_nocache
 
-static inline __u8 __raw_readb(const volatile void __iomem *addr)
-{
-          return *(__force volatile __u8 *)(addr);
-}
-static inline __u16 __raw_readw(const volatile void __iomem *addr)
-{
-          return *(__force volatile __u16 *)(addr);
-}
-static inline __u32 __raw_readl(const volatile void __iomem *addr)
+static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
 {
-          return *(__force volatile __u32 *)(addr);
+        return ioremap_nocache(offset, size);
 }
-static inline void __raw_writeb(__u8 b, volatile void __iomem *addr)
-{
-          *(__force volatile __u8 *)(addr) = b;
-}
-static inline void __raw_writew(__u16 b, volatile void __iomem *addr)
-{
-          *(__force volatile __u16 *)(addr) = b;
-}
-static inline void __raw_writel(__u32 b, volatile void __iomem *addr)
+
+static inline void iounmap(volatile void __iomem *addr)
 {
-          *(__force volatile __u32 *)(addr) = b;
 }
-
-/* These are the definitions for the x86 IO instructions
- * inb/inw/inl/outb/outw/outl, the "string" versions
- * insb/insw/insl/outsb/outsw/outsl, and the "pausing" versions
- * inb_p/inw_p/...
- * The macros don't do byte-swapping.
- */
-
-#define inb(port)               readb((u8 *)((port)))
-#define outb(val, port)         writeb((val),(u8 *)((unsigned long)(port)))
-#define inw(port)               readw((u16 *)((port)))
-#define outw(val, port)         writew((val),(u16 *)((unsigned long)(port)))
-#define inl(port)               readl((u32 *)((port)))
-#define outl(val, port)         writel((val),(u32 *)((unsigned long)(port)))
-
-#define inb_p(port)             inb((port))
-#define outb_p(val, port)       outb((val), (port))
-#define inw_p(port)             inw((port))
-#define outw_p(val, port)       outw((val), (port))
-#define inl_p(port)             inl((port))
-#define outl_p(val, port)       outl((val), (port))
-
-extern void insb (unsigned long port, void *dst, unsigned long count);
-extern void insw (unsigned long port, void *dst, unsigned long count);
-extern void insl (unsigned long port, void *dst, unsigned long count);
-extern void outsb (unsigned long port, const void *src, unsigned long count);
-extern void outsw (unsigned long port, const void *src, unsigned long count);
-extern void outsl (unsigned long port, const void *src, unsigned long count);
-
-#define IO_SPACE_LIMIT ~0
-
-#define memset_io(a,b,c)       memset((void *)(a),(b),(c))
-#define memcpy_fromio(a,b,c)   memcpy((a),(void *)(b),(c))
-#define memcpy_toio(a,b,c)      memcpy((void *)(a),(b),(c))
-
-/* At this point the Xtensa doesn't provide byte swap instructions */
-
-#ifdef __XTENSA_EB__
-# define in_8(addr) (*(u8*)(addr))
-# define in_le16(addr) _swapw(*(u16*)(addr))
-# define in_le32(addr) _swapl(*(u32*)(addr))
-# define out_8(b, addr) *(u8*)(addr) = (b)
-# define out_le16(b, addr) *(u16*)(addr) = _swapw(b)
-# define out_le32(b, addr) *(u32*)(addr) = _swapl(b)
-#elif defined(__XTENSA_EL__)
-# define in_8(addr)  (*(u8*)(addr))
-# define in_le16(addr) (*(u16*)(addr))
-# define in_le32(addr) (*(u32*)(addr))
-# define out_8(b, addr) *(u8*)(addr) = (b)
-# define out_le16(b, addr) *(u16*)(addr) = (b)
-# define out_le32(b, addr) *(u32*)(addr) = (b)
-#else
-# error processor byte order undefined!
-#endif
-
-
-/*
- * Convert a physical pointer to a virtual kernel pointer for /dev/mem access
- */
-#define xlate_dev_mem_ptr(p)    __va(p)
+#endif /* CONFIG_MMU */
 
 /*
- * Convert a virtual cached pointer to an uncached pointer
+ * Generic I/O
  */
-#define xlate_dev_kmem_ptr(p)   p
-
+#define readb_relaxed readb
+#define readw_relaxed readw
+#define readl_relaxed readl
 
 #endif  /* __KERNEL__ */
 
+#include <asm-generic/io.h>
+
 #endif  /* _XTENSA_IO_H */
diff --git a/arch/xtensa/include/asm/ioctls.h b/arch/xtensa/include/asm/ioctls.h
index fd1d1369a407..2aa4cd9f0cec 100644
--- a/arch/xtensa/include/asm/ioctls.h
+++ b/arch/xtensa/include/asm/ioctls.h
@@ -71,8 +71,8 @@
 #define TIOCSSOFTCAR    _IOW('T', 26, unsigned int)
 #define TIOCLINUX       _IOW('T', 28, char)
 #define TIOCCONS        _IO('T', 29)
-#define TIOCGSERIAL     _IOR('T', 30, struct serial_struct)
-#define TIOCSSERIAL     _IOW('T', 31, struct serial_struct)
+#define TIOCGSERIAL     0x803C541E      /*_IOR('T', 30, struct serial_struct)*/
+#define TIOCSSERIAL     0x403C541F      /*_IOW('T', 31, struct serial_struct)*/
 #define TIOCPKT         _IOW('T', 32, int)
 # define TIOCPKT_DATA            0
 # define TIOCPKT_FLUSHREAD       1
diff --git a/arch/xtensa/include/asm/regs.h b/arch/xtensa/include/asm/regs.h
index d4baed246928..a3075b12aff1 100644
--- a/arch/xtensa/include/asm/regs.h
+++ b/arch/xtensa/include/asm/regs.h
@@ -66,7 +66,7 @@
 #define ICOUNTLEVEL     237
 #define EXCVADDR        238
 #define CCOMPARE        240
-#define MISC            244
+#define MISC_SR         244
 
 /*  Special names for read-only and write-only interrupt registers.  */