Viewing file:  ide.h (2.17 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* SPDX-License-Identifier: GPL-2.0 */
/* ide.h: SPARC PCI specific IDE glue.
*
* Copyright (C) 1997 David S. Miller (davem@davemloft.net)
* Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
* Adaptation from sparc64 version to sparc by Pete Zaitcev.
*/
#ifndef _SPARC_IDE_H
#define _SPARC_IDE_H
#ifdef __KERNEL__
#include <asm/io.h>
#ifdef CONFIG_SPARC64
#include <asm/spitfire.h>
#include <asm/cacheflush.h>
#include <asm/page.h>
#else
#include <linux/pgtable.h>
#include <asm/psr.h>
#endif
#define __ide_insl(data_reg, buffer, wcount) \
__ide_insw(data_reg, buffer, (wcount)<<1)
#define __ide_outsl(data_reg, buffer, wcount) \
__ide_outsw(data_reg, buffer, (wcount)<<1)
/* On sparc, I/O ports and MMIO registers are accessed identically. */
#define __ide_mm_insw __ide_insw
#define __ide_mm_insl __ide_insl
#define __ide_mm_outsw __ide_outsw
#define __ide_mm_outsl __ide_outsl
static inline void __ide_insw(void __iomem *port, void *dst, u32 count)
{
#if defined(CONFIG_SPARC64) && defined(DCACHE_ALIASING_POSSIBLE)
unsigned long end = (unsigned long)dst + (count << 1);
#endif
u16 *ps = dst;
u32 *pi;
if(((unsigned long)ps) & 0x2) {
*ps++ = __raw_readw(port);
count--;
}
pi = (u32 *)ps;
while(count >= 2) {
u32 w;
w = __raw_readw(port) << 16;
w |= __raw_readw(port);
*pi++ = w;
count -= 2;
}
ps = (u16 *)pi;
if(count)
*ps++ = __raw_readw(port);
#if defined(CONFIG_SPARC64) && defined(DCACHE_ALIASING_POSSIBLE)
__flush_dcache_range((unsigned long)dst, end);
#endif
}
static inline void __ide_outsw(void __iomem *port, const void *src, u32 count)
{
#if defined(CONFIG_SPARC64) && defined(DCACHE_ALIASING_POSSIBLE)
unsigned long end = (unsigned long)src + (count << 1);
#endif
const u16 *ps = src;
const u32 *pi;
if(((unsigned long)src) & 0x2) {
__raw_writew(*ps++, port);
count--;
}
pi = (const u32 *)ps;
while(count >= 2) {
u32 w;
w = *pi++;
__raw_writew((w >> 16), port);
__raw_writew(w, port);
count -= 2;
}
ps = (const u16 *)pi;
if(count)
__raw_writew(*ps, port);
#if defined(CONFIG_SPARC64) && defined(DCACHE_ALIASING_POSSIBLE)
__flush_dcache_range((unsigned long)src, end);
#endif
}
#endif /* __KERNEL__ */
#endif /* _SPARC_IDE_H */
|