/* $Id: ide.h,v 1.21 2001/09/25 20:21:48 kanoj Exp $
* ide.h: Ultra/PCI specific IDE glue.
*
* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
*/
#ifndef _SPARC64_IDE_H
#define _SPARC64_IDE_H
#ifdef __KERNEL__
#include <asm/pgalloc.h>
#include <asm/io.h>
#include <asm/spitfire.h>
#include <asm/cacheflush.h>
#include <asm/page.h>
#ifndef MAX_HWIFS
# ifdef CONFIG_BLK_DEV_IDEPCI
#define MAX_HWIFS 10
# else
#define MAX_HWIFS 2
# endif
#endif
#define ide_default_io_ctl(base) ((base) + 0x206) /* obsolete */
#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 sparc64, 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 unsigned int inw_be(void __iomem *addr)
{
unsigned int ret;
__asm__ __volatile__("lduha [%1] %2, %0"
: "=r" (ret)
: "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
return ret;
}
static inline void __ide_insw(void __iomem *port, void *dst, u32 count)
{
#ifdef DCACHE_ALIASING_POSSIBLE
unsigned long end = (unsigned long)dst + (count << 1);
#endif
u16 *ps = dst;
u32 *pi;
if(((u64)ps) & 0x2) {
*ps++ = inw_be(port);
count--;
}
pi = (u32 *)ps;
while(count >= 2) {
u32 w;
w = inw_be(port) << 16;
w |= inw_be(port);
*pi++ = w;
count -= 2;
}
ps = (u16 *)pi;
if(count)
*ps++ = inw_be(port);
#ifdef DCACHE_ALIASING_POSSIBLE
__flush_dcache_range((unsigned long)dst, end);
#endif
}
static inline void outw_be(unsigned short w, void __iomem *addr)
{
__asm__ __volatile__("stha %0, [%1] %2"
: /* no outputs */
: "r" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
}
static inline void __ide_outsw(void __iomem *port, void *src, u32 count)
{
#ifdef DCACHE_ALIASING_POSSIBLE
unsigned long end = (unsigned long)src + (count << 1);
#endif
const u16 *ps = src;
const u32 *pi;
if(((u64)src) & 0x2) {
outw_be(*ps++, port);
count--;
}
pi = (const u32 *)ps;
while(count >= 2) {
u32 w;
w = *pi++;
outw_be((w >> 16), port);
outw_be(w, port);
count -= 2;
}
ps = (const u16 *)pi;
if(count)
outw_be(*ps, port);
#ifdef DCACHE_ALIASING_POSSIBLE
__flush_dcache_range((unsigned long)src, end);
#endif
}
#endif /* __KERNEL__ */
#endif /* _SPARC64_IDE_H */
