diff options
Diffstat (limited to 'include/asm-s390/io.h')
| -rw-r--r-- | include/asm-s390/io.h | 75 |
1 files changed, 1 insertions, 74 deletions
diff --git a/include/asm-s390/io.h b/include/asm-s390/io.h index efb7de9c1c6..b7ff6afc3ca 100644 --- a/include/asm-s390/io.h +++ b/include/asm-s390/io.h @@ -13,13 +13,10 @@ #ifdef __KERNEL__ -#include <linux/vmalloc.h> #include <asm/page.h> #define IO_SPACE_LIMIT 0xffffffff -#define __io_virt(x) ((void *)(PAGE_OFFSET | (unsigned long)(x))) - /* * Change virtual addresses to physical addresses and vv. * These are pretty trivial @@ -28,11 +25,7 @@ static inline unsigned long virt_to_phys(volatile void * address) { unsigned long real_address; asm volatile( -#ifndef __s390x__ " lra %0,0(%1)\n" -#else /* __s390x__ */ - " lrag %0,0(%1)\n" -#endif /* __s390x__ */ " jz 0f\n" " la %0,0\n" "0:" @@ -42,75 +35,9 @@ static inline unsigned long virt_to_phys(volatile void * address) static inline void * phys_to_virt(unsigned long address) { - return __io_virt(address); -} - -extern void * __ioremap(unsigned long offset, unsigned long size, unsigned long flags); - -static inline void * 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: - */ -static inline void * ioremap_nocache (unsigned long offset, unsigned long size) -{ - return __ioremap(offset, size, 0); + return (void *) address; } -extern void iounmap(void *addr); - -/* - * IO bus memory addresses are also 1:1 with the physical address - */ -#define virt_to_bus virt_to_phys -#define bus_to_virt phys_to_virt - -/* - * readX/writeX() are used to access memory mapped devices. On some - * architectures the memory mapped IO stuff needs to be accessed - * differently. - */ - -#define readb(addr) (*(volatile unsigned char *) __io_virt(addr)) -#define readw(addr) (*(volatile unsigned short *) __io_virt(addr)) -#define readl(addr) (*(volatile unsigned int *) __io_virt(addr)) -#define readq(addr) (*(volatile unsigned long long *) __io_virt(addr)) - -#define readb_relaxed(addr) readb(addr) -#define readw_relaxed(addr) readw(addr) -#define readl_relaxed(addr) readl(addr) -#define readq_relaxed(addr) readq(addr) -#define __raw_readb readb -#define __raw_readw readw -#define __raw_readl readl -#define __raw_readq readq - -#define writeb(b,addr) (*(volatile unsigned char *) __io_virt(addr) = (b)) -#define writew(b,addr) (*(volatile unsigned short *) __io_virt(addr) = (b)) -#define writel(b,addr) (*(volatile unsigned int *) __io_virt(addr) = (b)) -#define writeq(b,addr) (*(volatile unsigned long long *) __io_virt(addr) = (b)) -#define __raw_writeb writeb -#define __raw_writew writew -#define __raw_writel writel -#define __raw_writeq writeq - -#define memset_io(a,b,c) memset(__io_virt(a),(b),(c)) -#define memcpy_fromio(a,b,c) memcpy((a),__io_virt(b),(c)) -#define memcpy_toio(a,b,c) memcpy(__io_virt(a),(b),(c)) - -#define inb_p(addr) readb(addr) -#define inb(addr) readb(addr) - -#define outb(x,addr) ((void) writeb(x,addr)) -#define outb_p(x,addr) outb(x,addr) - -#define mmiowb() do { } while (0) - /* * Convert a physical pointer to a virtual kernel pointer for /dev/mem * access |