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/*
* linux/include/asm-ppc/ide.h
*
* Copyright (C) 1994-1996 Linus Torvalds & authors
*/
/*
* This file contains the ppc architecture specific IDE code.
*/
#ifndef __ASMPPC_IDE_H
#define __ASMPPC_IDE_H
#ifdef __KERNEL__
#include <linux/ioport.h>
#include <asm/io.h> /* so we can redefine insw/outsw */
#ifndef MAX_HWIFS
#define MAX_HWIFS 4
#endif
#undef SUPPORT_SLOW_DATA_PORTS
#define SUPPORT_SLOW_DATA_PORTS 0
#undef SUPPORT_VLB_SYNC
#define SUPPORT_VLB_SYNC 0
#define ide__sti() __sti()
typedef unsigned int ide_ioreg_t;
void ide_init_hwif_ports(ide_ioreg_t *p, ide_ioreg_t base, int *irq);
void prep_ide_init_hwif_ports(ide_ioreg_t *p, ide_ioreg_t base, int *irq);
void mbx_ide_init_hwif_ports(ide_ioreg_t *p, ide_ioreg_t base, int *irq);
void pmac_ide_init_hwif_ports(ide_ioreg_t *p, ide_ioreg_t base, int *irq);
void chrp_ide_init_hwif_ports(ide_ioreg_t *p, ide_ioreg_t base, int *irq);
void ide_insw(ide_ioreg_t port, void *buf, int ns);
void ide_outsw(ide_ioreg_t port, void *buf, int ns);
extern int pmac_ide_ports_known;
extern ide_ioreg_t pmac_ide_regbase[MAX_HWIFS];
extern int pmac_ide_irq[MAX_HWIFS];
extern void pmac_ide_probe(void);
extern int chrp_ide_ports_known;
extern ide_ioreg_t chrp_ide_regbase[MAX_HWIFS];
extern ide_ioreg_t chrp_idedma_regbase; /* one for both channels */
extern unsigned int chrp_ide_irq;
extern void chrp_ide_probe(void);
static __inline__ int ide_default_irq(ide_ioreg_t base)
{
if ( (_machine == _MACH_Pmac) || (_machine == _MACH_mbx) )
return 0;
else if ( _machine == _MACH_chrp) {
if (chrp_ide_ports_known == 0)
chrp_ide_probe();
return chrp_ide_irq;
}
switch (base) {
case 0x1f0: return 13;
case 0x170: return 13;
case 0x1e8: return 11;
case 0x168: return 10;
default:
return 0;
}
}
static __inline__ ide_ioreg_t ide_default_io_base(int index)
{
if (_machine == _MACH_Pmac) {
if (!pmac_ide_ports_known)
pmac_ide_probe();
return pmac_ide_regbase[index];
}
if (_machine == _MACH_mbx) return index;
if ( _machine == _MACH_chrp ) {
if (chrp_ide_ports_known == 0)
chrp_ide_probe();
return chrp_ide_regbase[index];
}
switch (index) {
case 0: return 0x1f0;
case 1: return 0x170;
case 2: return 0x1e8;
case 3: return 0x168;
default:
return 0;
}
}
static __inline__ int ide_check_region (ide_ioreg_t from, unsigned int extent)
{
if ( (_machine == _MACH_Pmac) || (_machine == _MACH_mbx))
return 0;
return check_region(from, extent);
}
static __inline__ void ide_request_region (ide_ioreg_t from, unsigned int extent, const char *name)
{
if ( (_machine == _MACH_Pmac) || (_machine == _MACH_mbx) )
return;
request_region(from, extent, name);
}
static __inline__ void ide_release_region (ide_ioreg_t from, unsigned int extent)
{
if ( (_machine == _MACH_Pmac) || (_machine == _MACH_mbx) )
return;
release_region(from, extent);
}
#define ide_fix_driveid(id) do { \
int nh; \
unsigned short *p = (unsigned short *) id; \
if (( _machine == _MACH_Pmac ) || (_machine == _MACH_chrp)|| (_machine == _MACH_mbx) ) \
for (nh = SECTOR_WORDS * 2; nh != 0; --nh, ++p) \
*p = (*p << 8) + (*p >> 8); \
} while (0)
#undef insw
#define insw(port, buf, ns) do { \
if ( _machine == _MACH_chrp) {\
ide_insw((port)+_IO_BASE, (buf), (ns)); \
}\
else if ( (_machine == _MACH_Pmac) || (_machine == _MACH_mbx) ) \
ide_insw((port), (buf), (ns)); \
else \
/* this must be the same as insw in io.h!! */ \
_insw((unsigned short *)((port)+_IO_BASE), (buf), (ns)); \
} while (0)
#undef outsw
/* printk("port: %x buf: %p ns: %d\n",port,buf,ns); \ */
#define outsw(port, buf, ns) do { \
if ( _machine == _MACH_chrp) {\
ide_outsw((port)+_IO_BASE, (buf), (ns)); \
}\
else if ( (_machine == _MACH_Pmac) || (_machine == _MACH_mbx) ) \
ide_outsw((port), (buf), (ns)); \
else \
/* this must be the same as outsw in io.h!! */ \
_outsw((unsigned short *)((port)+_IO_BASE), (buf), (ns)); \
} while (0)
#undef inb
#define inb(port) \
in_8((unsigned char *)((port) + ((_machine==_MACH_Pmac)? 0: _IO_BASE)))
#undef inb_p
#define inb_p(port) inb(port)
#undef outb
#define outb(val, port) \
out_8((unsigned char *)((port) + ((_machine==_MACH_Pmac)? 0: _IO_BASE)), (val))
#undef outb_p
#define outb_p(val, port) outb(val, port)
typedef union {
unsigned all : 8; /* all of the bits together */
struct {
unsigned bit7 : 1; /* always 1 */
unsigned lba : 1; /* using LBA instead of CHS */
unsigned bit5 : 1; /* always 1 */
unsigned unit : 1; /* drive select number, 0/1 */
unsigned head : 4; /* always zeros here */
} b;
} select_t;
static __inline__ int ide_request_irq(unsigned int irq, void (*handler)(int, void *, struct pt_regs *),
unsigned long flags, const char *device, void *dev_id)
{
return request_irq(irq, handler, flags, device, dev_id);
}
static __inline__ void ide_free_irq(unsigned int irq, void *dev_id)
{
free_irq(irq, dev_id);
}
/*
* The following are not needed for the non-m68k ports
*/
#define ide_ack_intr(base, irq) (1)
#define ide_release_lock(lock) do {} while (0)
#define ide_get_lock(lock, hdlr, data) do {} while (0)
#endif /* __KERNEL__ */
#endif /* __ASMPPC_IDE_H */
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