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