diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-08-14 10:55:26 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-08-14 10:55:26 +0200 |
commit | d4439087d316613548c70472291bf4ca646ce24b (patch) | |
tree | 4819f39cbbfcc2ed9c9f85c7a91cbf142f5b02d4 /arch/s390/include/asm/io.h | |
parent | 26d809af6397ce5c37f5c44d89734d19cce1ad25 (diff) | |
parent | 30a2f3c60a84092c8084dfe788b710f8d0768cd4 (diff) |
Merge commit 'v2.6.27-rc3' into x86/xsave
Conflicts:
arch/x86/kernel/genapic_64.c
include/asm-x86/kvm_host.h
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/s390/include/asm/io.h')
-rw-r--r-- | arch/s390/include/asm/io.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/arch/s390/include/asm/io.h b/arch/s390/include/asm/io.h new file mode 100644 index 00000000000..b7ff6afc3ca --- /dev/null +++ b/arch/s390/include/asm/io.h @@ -0,0 +1,54 @@ +/* + * include/asm-s390/io.h + * + * S390 version + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * Derived from "include/asm-i386/io.h" + */ + +#ifndef _S390_IO_H +#define _S390_IO_H + +#ifdef __KERNEL__ + +#include <asm/page.h> + +#define IO_SPACE_LIMIT 0xffffffff + +/* + * Change virtual addresses to physical addresses and vv. + * These are pretty trivial + */ +static inline unsigned long virt_to_phys(volatile void * address) +{ + unsigned long real_address; + asm volatile( + " lra %0,0(%1)\n" + " jz 0f\n" + " la %0,0\n" + "0:" + : "=a" (real_address) : "a" (address) : "cc"); + return real_address; +} + +static inline void * phys_to_virt(unsigned long address) +{ + return (void *) address; +} + +/* + * Convert a physical pointer to a virtual kernel pointer for /dev/mem + * access + */ +#define xlate_dev_mem_ptr(p) __va(p) + +/* + * Convert a virtual cached pointer to an uncached pointer + */ +#define xlate_dev_kmem_ptr(p) p + +#endif /* __KERNEL__ */ + +#endif |