projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 6662327e BZ |
2 | /* ide.h: SPARC PCI specific IDE glue. |
| 3 | * | |
| 4 | * Copyright (C) 1997 David S. Miller (davem@davemloft.net) | |
| 5 | * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be) | |
| 6 | * Adaptation from sparc64 version to sparc by Pete Zaitcev. | |
| 7 | */ | |
| 8 | ||
| 9 | #ifndef _SPARC_IDE_H | |
| 10 | #define _SPARC_IDE_H | |
| 11 | ||
| 12 | #ifdef __KERNEL__ | |
| 13 | ||
| 14 | #include <asm/io.h> | |
| 15 | #ifdef CONFIG_SPARC64 | |
| 16 | #include <asm/pgalloc.h> | |
| 17 | #include <asm/spitfire.h> | |
| 18 | #include <asm/cacheflush.h> | |
| 19 | #include <asm/page.h> | |
| f5e706ad | 20 | #else |
| 6662327e BZ |
21 | #include <asm/pgtable.h> |
| 22 | #include <asm/psr.h> | |
| f5e706ad | 23 | #endif |
| 6662327e | 24 | |
| 6662327e BZ |
25 | #define __ide_insl(data_reg, buffer, wcount) \ |
| 26 | __ide_insw(data_reg, buffer, (wcount)<<1) | |
| 27 | #define __ide_outsl(data_reg, buffer, wcount) \ | |
| 28 | __ide_outsw(data_reg, buffer, (wcount)<<1) | |
| 29 | ||
| 30 | /* On sparc, I/O ports and MMIO registers are accessed identically. */ | |
| 31 | #define __ide_mm_insw __ide_insw | |
| 32 | #define __ide_mm_insl __ide_insl | |
| 33 | #define __ide_mm_outsw __ide_outsw | |
| 34 | #define __ide_mm_outsl __ide_outsl | |
| 35 | ||
| 36 | static inline void __ide_insw(void __iomem *port, void *dst, u32 count) | |
| 37 | { | |
| 38 | #if defined(CONFIG_SPARC64) && defined(DCACHE_ALIASING_POSSIBLE) | |
| 39 | unsigned long end = (unsigned long)dst + (count << 1); | |
| f5e706ad | 40 | #endif |
| 6662327e BZ |
41 | u16 *ps = dst; |
| 42 | u32 *pi; | |
| 43 | ||
| 44 | if(((unsigned long)ps) & 0x2) { | |
| 45 | *ps++ = __raw_readw(port); | |
| 46 | count--; | |
| 47 | } | |
| 48 | pi = (u32 *)ps; | |
| 49 | while(count >= 2) { | |
| 50 | u32 w; | |
| 51 | ||
| 52 | w = __raw_readw(port) << 16; | |
| 53 | w |= __raw_readw(port); | |
| 54 | *pi++ = w; | |
| 55 | count -= 2; | |
| 56 | } | |
| 57 | ps = (u16 *)pi; | |
| 58 | if(count) | |
| 59 | *ps++ = __raw_readw(port); | |
| 60 | ||
| 61 | #if defined(CONFIG_SPARC64) && defined(DCACHE_ALIASING_POSSIBLE) | |
| 62 | __flush_dcache_range((unsigned long)dst, end); | |
| 63 | #endif | |
| 64 | } | |
| 65 | ||
| 66 | static inline void __ide_outsw(void __iomem *port, const void *src, u32 count) | |
| 67 | { | |
| 68 | #if defined(CONFIG_SPARC64) && defined(DCACHE_ALIASING_POSSIBLE) | |
| 69 | unsigned long end = (unsigned long)src + (count << 1); | |
| 70 | #endif | |
| 71 | const u16 *ps = src; | |
| 72 | const u32 *pi; | |
| 73 | ||
| 74 | if(((unsigned long)src) & 0x2) { | |
| 75 | __raw_writew(*ps++, port); | |
| 76 | count--; | |
| 77 | } | |
| 78 | pi = (const u32 *)ps; | |
| 79 | while(count >= 2) { | |
| 80 | u32 w; | |
| 81 | ||
| 82 | w = *pi++; | |
| 83 | __raw_writew((w >> 16), port); | |
| 84 | __raw_writew(w, port); | |
| 85 | count -= 2; | |
| 86 | } | |
| 87 | ps = (const u16 *)pi; | |
| 88 | if(count) | |
| 89 | __raw_writew(*ps, port); | |
| 90 | ||
| 91 | #if defined(CONFIG_SPARC64) && defined(DCACHE_ALIASING_POSSIBLE) | |
| 92 | __flush_dcache_range((unsigned long)src, end); | |
| 93 | #endif | |
| 94 | } | |
| 95 | ||
| 96 | #endif /* __KERNEL__ */ | |
| 97 | ||
| 98 | #endif /* _SPARC_IDE_H */ |