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- /*
- * S390 version
- * Copyright IBM Corp. 1999
- * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
- *
- * Derived from "include/asm-i386/io.h"
- */
- #ifndef _S390_IO_H
- #define _S390_IO_H
- #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;
- }
- void *xlate_dev_mem_ptr(unsigned long phys);
- void unxlate_dev_mem_ptr(unsigned long phys, void *addr);
- /*
- * Convert a virtual cached pointer to an uncached pointer
- */
- #define xlate_dev_kmem_ptr(p) p
- #endif
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