98 lines
2.2 KiB
C
98 lines
2.2 KiB
C
/* 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/pgalloc.h>
|
|
#include <asm/spitfire.h>
|
|
#include <asm/cacheflush.h>
|
|
#include <asm/page.h>
|
|
#else
|
|
#include <asm/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 */
|