#ifndef _ASM_IO_H
#define _ASM_IO_H
-#include <linux/config.h>
#include <linux/types.h>
#include <asm/pgtable.h>
* eg dev->hpa or 0xfee00000.
*/
-#ifdef CONFIG_DEBUG_IOREMAP
-#ifdef CONFIG_64BIT
-#define NYBBLE_SHIFT 60
-#else
-#define NYBBLE_SHIFT 28
-#endif
-extern void gsc_bad_addr(unsigned long addr);
-extern void __raw_bad_addr(const volatile void __iomem *addr);
-#define gsc_check_addr(addr) \
- if ((addr >> NYBBLE_SHIFT) != 0xf) { \
- gsc_bad_addr(addr); \
- addr |= 0xfUL << NYBBLE_SHIFT; \
- }
-#define __raw_check_addr(addr) \
- if (((unsigned long)addr >> NYBBLE_SHIFT) != 0xe) \
- __raw_bad_addr(addr); \
- addr = (void __iomem *)((unsigned long)addr | (0xfUL << NYBBLE_SHIFT));
-#else
-#define gsc_check_addr(addr)
-#define __raw_check_addr(addr)
-#endif
-
static inline unsigned char gsc_readb(unsigned long addr)
{
long flags;
unsigned char ret;
- gsc_check_addr(addr);
-
__asm__ __volatile__(
" rsm 2,%0\n"
" ldbx 0(%2),%1\n"
long flags;
unsigned short ret;
- gsc_check_addr(addr);
-
__asm__ __volatile__(
" rsm 2,%0\n"
" ldhx 0(%2),%1\n"
{
u32 ret;
- gsc_check_addr(addr);
-
__asm__ __volatile__(
" ldwax 0(%1),%0\n"
: "=r" (ret) : "r" (addr) );
static inline unsigned long long gsc_readq(unsigned long addr)
{
unsigned long long ret;
- gsc_check_addr(addr);
#ifdef __LP64__
__asm__ __volatile__(
static inline void gsc_writeb(unsigned char val, unsigned long addr)
{
long flags;
- gsc_check_addr(addr);
-
__asm__ __volatile__(
" rsm 2,%0\n"
" stbs %1,0(%2)\n"
static inline void gsc_writew(unsigned short val, unsigned long addr)
{
long flags;
- gsc_check_addr(addr);
-
__asm__ __volatile__(
" rsm 2,%0\n"
" sths %1,0(%2)\n"
static inline void gsc_writel(unsigned int val, unsigned long addr)
{
- gsc_check_addr(addr);
-
__asm__ __volatile__(
" stwas %0,0(%1)\n"
: : "r" (val), "r" (addr) );
static inline void gsc_writeq(unsigned long long val, unsigned long addr)
{
- gsc_check_addr(addr);
-
#ifdef __LP64__
__asm__ __volatile__(
" stda %0,0(%1)\n"
extern void __iomem * __ioremap(unsigned long offset, unsigned long size, unsigned long flags);
-extern inline void __iomem * ioremap(unsigned long offset, unsigned long size)
-{
- return __ioremap(offset, size, 0);
-}
-
-/*
- * This one maps high address device memory and turns off caching for that area.
- * it's useful if some control registers are in such an area and write combining
- * or read caching is not desirable:
+/* Most machines react poorly to I/O-space being cacheable... Instead let's
+ * define ioremap() in terms of ioremap_nocache().
*/
-extern inline void * ioremap_nocache(unsigned long offset, unsigned long size)
+extern inline void __iomem * ioremap(unsigned long offset, unsigned long size)
{
- return __ioremap(offset, size, _PAGE_NO_CACHE /* _PAGE_PCD */);
+ return __ioremap(offset, size, _PAGE_NO_CACHE);
}
+#define ioremap_nocache(off, sz) ioremap((off), (sz))
-extern void iounmap(void __iomem *addr);
+extern void iounmap(const volatile void __iomem *addr);
-/*
- * USE_HPPA_IOREMAP is the magic flag to enable or disable real ioremap()
- * functionality. It's currently disabled because it may not work on some
- * machines.
- */
-#define USE_HPPA_IOREMAP 0
-
-#if USE_HPPA_IOREMAP
static inline unsigned char __raw_readb(const volatile void __iomem *addr)
{
return (*(volatile unsigned char __force *) (addr));
{
*(volatile unsigned long long __force *) addr = b;
}
-#else /* !USE_HPPA_IOREMAP */
-static inline unsigned char __raw_readb(const volatile void __iomem *addr)
-{
- __raw_check_addr(addr);
-
- return gsc_readb((unsigned long) addr);
-}
-static inline unsigned short __raw_readw(const volatile void __iomem *addr)
-{
- __raw_check_addr(addr);
-
- return gsc_readw((unsigned long) addr);
-}
-static inline unsigned int __raw_readl(const volatile void __iomem *addr)
-{
- __raw_check_addr(addr);
-
- return gsc_readl((unsigned long) addr);
-}
-static inline unsigned long long __raw_readq(const volatile void __iomem *addr)
-{
- __raw_check_addr(addr);
-
- return gsc_readq((unsigned long) addr);
-}
-
-static inline void __raw_writeb(unsigned char b, volatile void __iomem *addr)
-{
- __raw_check_addr(addr);
-
- gsc_writeb(b, (unsigned long) addr);
-}
-static inline void __raw_writew(unsigned short b, volatile void __iomem *addr)
-{
- __raw_check_addr(addr);
-
- gsc_writew(b, (unsigned long) addr);
-}
-static inline void __raw_writel(unsigned int b, volatile void __iomem *addr)
-{
- __raw_check_addr(addr);
-
- gsc_writel(b, (unsigned long) addr);
-}
-static inline void __raw_writeq(unsigned long long b, volatile void __iomem *addr)
-{
- __raw_check_addr(addr);
-
- gsc_writeq(b, (unsigned long) addr);
-}
-#endif /* !USE_HPPA_IOREMAP */
/* readb can never be const, so use __fswab instead of le*_to_cpu */
#define readb(addr) __raw_readb(addr)
void memcpy_fromio(void *dst, const volatile void __iomem *src, int count);
void memcpy_toio(volatile void __iomem *dst, const void *src, int count);
-/* Support old drivers which don't ioremap.
- * NB this interface is scheduled to disappear in 2.5
- */
-
-#define __isa_addr(x) (void __iomem *)(F_EXTEND(0xfc000000) | (x))
-#define isa_readb(a) readb(__isa_addr(a))
-#define isa_readw(a) readw(__isa_addr(a))
-#define isa_readl(a) readl(__isa_addr(a))
-#define isa_writeb(b,a) writeb((b), __isa_addr(a))
-#define isa_writew(b,a) writew((b), __isa_addr(a))
-#define isa_writel(b,a) writel((b), __isa_addr(a))
-#define isa_memset_io(a,b,c) memset_io(__isa_addr(a), (b), (c))
-#define isa_memcpy_fromio(a,b,c) memcpy_fromio((a), __isa_addr(b), (c))
-#define isa_memcpy_toio(a,b,c) memcpy_toio(__isa_addr(a), (b), (c))
-
-
/*
* XXX - We don't have csum_partial_copy_fromio() yet, so we cheat here and
* just copy it. The net code will then do the checksum later. Presently
#define eth_io_copy_and_sum(skb,src,len,unused) \
memcpy_fromio((skb)->data,(src),(len))
-#define isa_eth_io_copy_and_sum(skb,src,len,unused) \
- isa_memcpy_fromio((skb)->data,(src),(len))
/* Port-space IO */
git://git.onelab.eu / linux-2.6.git / blobdiff