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97 lines
2.2 KiB
97 lines
2.2 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* ide.h: SPARC PCI specific IDE glue. |
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* |
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* Copyright (C) 1997 David S. Miller ([email protected]) |
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* Copyright (C) 1998 Eddie C. Dost ([email protected]) |
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* Adaptation from sparc64 version to sparc by Pete Zaitcev. |
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*/ |
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#ifndef _SPARC_IDE_H |
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#define _SPARC_IDE_H |
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#ifdef __KERNEL__ |
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#include <asm/io.h> |
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#ifdef CONFIG_SPARC64 |
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#include <asm/spitfire.h> |
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#include <asm/cacheflush.h> |
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#include <asm/page.h> |
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#else |
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#include <linux/pgtable.h> |
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#include <asm/psr.h> |
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#endif |
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#define __ide_insl(data_reg, buffer, wcount) \ |
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__ide_insw(data_reg, buffer, (wcount)<<1) |
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#define __ide_outsl(data_reg, buffer, wcount) \ |
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__ide_outsw(data_reg, buffer, (wcount)<<1) |
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/* On sparc, I/O ports and MMIO registers are accessed identically. */ |
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#define __ide_mm_insw __ide_insw |
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#define __ide_mm_insl __ide_insl |
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#define __ide_mm_outsw __ide_outsw |
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#define __ide_mm_outsl __ide_outsl |
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static inline void __ide_insw(void __iomem *port, void *dst, u32 count) |
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{ |
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#if defined(CONFIG_SPARC64) && defined(DCACHE_ALIASING_POSSIBLE) |
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unsigned long end = (unsigned long)dst + (count << 1); |
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#endif |
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u16 *ps = dst; |
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u32 *pi; |
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if(((unsigned long)ps) & 0x2) { |
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*ps++ = __raw_readw(port); |
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count--; |
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} |
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pi = (u32 *)ps; |
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while(count >= 2) { |
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u32 w; |
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w = __raw_readw(port) << 16; |
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w |= __raw_readw(port); |
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*pi++ = w; |
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count -= 2; |
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} |
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ps = (u16 *)pi; |
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if(count) |
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*ps++ = __raw_readw(port); |
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#if defined(CONFIG_SPARC64) && defined(DCACHE_ALIASING_POSSIBLE) |
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__flush_dcache_range((unsigned long)dst, end); |
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#endif |
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} |
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static inline void __ide_outsw(void __iomem *port, const void *src, u32 count) |
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{ |
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#if defined(CONFIG_SPARC64) && defined(DCACHE_ALIASING_POSSIBLE) |
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unsigned long end = (unsigned long)src + (count << 1); |
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#endif |
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const u16 *ps = src; |
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const u32 *pi; |
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if(((unsigned long)src) & 0x2) { |
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__raw_writew(*ps++, port); |
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count--; |
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} |
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pi = (const u32 *)ps; |
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while(count >= 2) { |
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u32 w; |
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w = *pi++; |
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__raw_writew((w >> 16), port); |
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__raw_writew(w, port); |
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count -= 2; |
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} |
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ps = (const u16 *)pi; |
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if(count) |
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__raw_writew(*ps, port); |
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#if defined(CONFIG_SPARC64) && defined(DCACHE_ALIASING_POSSIBLE) |
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__flush_dcache_range((unsigned long)src, end); |
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#endif |
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} |
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#endif /* __KERNEL__ */ |
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#endif /* _SPARC_IDE_H */
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