From 23db764d3db5a4bb1e104ad9310e5dc18e4ffa1b Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 11 Feb 2007 18:15:29 +0000 Subject: [PATCH] Switch s390 to NO_IOMEM Martin Schwidefsky wrote: "s390 does not even need (in|out)b(_p|). I wondered what else from io.h do we not need. The answer is: almost nothing. With the devres patch from Al and the dma-mapping patch from Heiko we can get rid of iomem and all associated definitions." So we'll just need to replace NO_IOPORT with NO_IOMEM in Kconfig and kill arch/s390/mm/ioremap.c. BTW, there's an annoying bit of junk in there - IO_SPACE_LIMIT. We only need it for /proc/ioports, which AFAICS shouldn't even be there on s390 (or uml). OTOH, removing that thing would mean a user-visible change - we go from "empty file in /proc" to "no such file in /proc"... Signed-off-by: Al Viro Signed-off-by: Linus Torvalds --- include/asm-s390/io.h | 65 --------------------------------------------------- 1 file changed, 65 deletions(-) (limited to 'include/asm-s390') diff --git a/include/asm-s390/io.h b/include/asm-s390/io.h index a4c2d55..dca6a6c 100644 --- a/include/asm-s390/io.h +++ b/include/asm-s390/io.h @@ -13,7 +13,6 @@ #ifdef __KERNEL__ -#include #include #define IO_SPACE_LIMIT 0xffffffff @@ -41,70 +40,6 @@ 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); -} - -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) /* -- cgit v1.1