projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| 1da177e4 | 2 | * S390 version |
| a53c8fab | 3 | * Copyright IBM Corp. 1999 |
| 1da177e4 LT |
4 | * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) |
| 5 | * | |
| 6 | * Derived from "include/asm-i386/io.h" | |
| 7 | */ | |
| 8 | ||
| 9 | #ifndef _S390_IO_H | |
| 10 | #define _S390_IO_H | |
| 11 | ||
| cd248341 | 12 | #include <linux/kernel.h> |
| 1da177e4 | 13 | #include <asm/page.h> |
| cd248341 | 14 | #include <asm/pci_io.h> |
| 1da177e4 | 15 | |
| 1da177e4 LT |
16 | /* |
| 17 | * Change virtual addresses to physical addresses and vv. | |
| 18 | * These are pretty trivial | |
| 19 | */ | |
| 4448aaf0 | 20 | static inline unsigned long virt_to_phys(volatile void * address) |
| 1da177e4 LT |
21 | { |
| 22 | unsigned long real_address; | |
| 94c12cc7 | 23 | asm volatile( |
| 94c12cc7 | 24 | " lra %0,0(%1)\n" |
| 94c12cc7 MS |
25 | " jz 0f\n" |
| 26 | " la %0,0\n" | |
| cd248341 | 27 | "0:" |
| 94c12cc7 | 28 | : "=a" (real_address) : "a" (address) : "cc"); |
| cd248341 | 29 | return real_address; |
| 1da177e4 | 30 | } |
| cd248341 | 31 | #define virt_to_phys virt_to_phys |
| 1da177e4 | 32 | |
| 4448aaf0 | 33 | static inline void * phys_to_virt(unsigned long address) |
| 1da177e4 | 34 | { |
| 022ae414 | 35 | return (void *) address; |
| 1da177e4 LT |
36 | } |
| 37 | ||
| b2a68c23 | 38 | void *xlate_dev_mem_ptr(unsigned long phys); |
| 576ebd74 | 39 | #define xlate_dev_mem_ptr xlate_dev_mem_ptr |
| b2a68c23 | 40 | void unxlate_dev_mem_ptr(unsigned long phys, void *addr); |
| 1da177e4 LT |
41 | |
| 42 | /* | |
| 43 | * Convert a virtual cached pointer to an uncached pointer | |
| 44 | */ | |
| 45 | #define xlate_dev_kmem_ptr(p) p | |
| 46 | ||
| cd248341 JG |
47 | #define IO_SPACE_LIMIT 0 |
| 48 | ||
| 49 | #ifdef CONFIG_PCI | |
| 50 | ||
| 51 | #define ioremap_nocache(addr, size) ioremap(addr, size) | |
| 52 | #define ioremap_wc ioremap_nocache | |
| 53 | ||
| cd248341 JG |
54 | static inline void __iomem *ioremap(unsigned long offset, unsigned long size) |
| 55 | { | |
| 56 | return (void __iomem *) offset; | |
| 57 | } | |
| 58 | ||
| 59 | static inline void iounmap(volatile void __iomem *addr) | |
| 60 | { | |
| 61 | } | |
| 62 | ||
| 63 | /* | |
| 64 | * s390 needs a private implementation of pci_iomap since ioremap with its | |
| 65 | * offset parameter isn't sufficient. That's because BAR spaces are not | |
| 66 | * disjunctive on s390 so we need the bar parameter of pci_iomap to find | |
| 67 | * the corresponding device and create the mapping cookie. | |
| 68 | */ | |
| 69 | #define pci_iomap pci_iomap | |
| 70 | #define pci_iounmap pci_iounmap | |
| 71 | ||
| 72 | #define memcpy_fromio(dst, src, count) zpci_memcpy_fromio(dst, src, count) | |
| 73 | #define memcpy_toio(dst, src, count) zpci_memcpy_toio(dst, src, count) | |
| 74 | #define memset_io(dst, val, count) zpci_memset_io(dst, val, count) | |
| 75 | ||
| 76 | #define __raw_readb zpci_read_u8 | |
| 77 | #define __raw_readw zpci_read_u16 | |
| 78 | #define __raw_readl zpci_read_u32 | |
| 79 | #define __raw_readq zpci_read_u64 | |
| 80 | #define __raw_writeb zpci_write_u8 | |
| 81 | #define __raw_writew zpci_write_u16 | |
| 82 | #define __raw_writel zpci_write_u32 | |
| 83 | #define __raw_writeq zpci_write_u64 | |
| 84 | ||
| 478740a1 HC |
85 | #define readb_relaxed readb |
| 86 | #define readw_relaxed readw | |
| 87 | #define readl_relaxed readl | |
| 88 | #define readq_relaxed readq | |
| 89 | ||
| cd248341 JG |
90 | #endif /* CONFIG_PCI */ |
| 91 | ||
| 92 | #include <asm-generic/io.h> | |
| 93 | ||
| 1da177e4 | 94 | #endif |