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#ifndef _M68K_IDE_H
#define _M68K_IDE_H
/* Copyright(c) 1996 Kars de Jong */
/* Based on the ide driver from 1.2.13pl8 */
#include <linux/config.h>
#ifdef CONFIG_AMIGA
#include <asm/amigahw.h>
#include <asm/amihdreg.h>
#include <asm/amigaints.h>
#endif /* CONFIG_AMIGA */
#ifdef CONFIG_ATARI
#include <asm/atarihw.h>
#include <asm/atarihdreg.h>
#include <asm/atariints.h>
#include <asm/atari_stdma.h>
#endif /* CONFIG_ATARI */
#include <asm/bootinfo.h>
struct hd_regs_struct {
unsigned int hd_error,
hd_nsector,
hd_sector,
hd_lcyl,
hd_hcyl,
hd_select,
hd_status;
};
static struct hd_regs_struct hd_regs;
static void probe_m68k_ide (void);
/* Undefine these again, they were defined for the PC. */
#undef IDE_ERROR_OFFSET
#undef IDE_NSECTOR_OFFSET
#undef IDE_SECTOR_OFFSET
#undef IDE_LCYL_OFFSET
#undef IDE_HCYL_OFFSET
#undef IDE_SELECT_OFFSET
#undef IDE_STATUS_OFFSET
#undef IDE_FEATURE_OFFSET
#undef IDE_COMMAND_OFFSET
#undef SELECT_DRIVE
#define IDE_ERROR_OFFSET hd_regs.hd_error
#define IDE_NSECTOR_OFFSET hd_regs.hd_nsector
#define IDE_SECTOR_OFFSET hd_regs.hd_sector
#define IDE_LCYL_OFFSET hd_regs.hd_lcyl
#define IDE_HCYL_OFFSET hd_regs.hd_hcyl
#define IDE_SELECT_OFFSET hd_regs.hd_select
#define IDE_STATUS_OFFSET hd_regs.hd_status
#define IDE_FEATURE_OFFSET IDE_ERROR_OFFSET
#define IDE_COMMAND_OFFSET IDE_STATUS_OFFSET
#undef SUPPORT_VLB_SYNC
#define SUPPORT_VLB_SYNC 0
#undef HD_DATA
#define HD_DATA NULL
/* MSch: changed sti() to STI() wherever possible in ide.c; moved STI() def.
* to asm/ide.h
*/
/* The Atari interrupt structure strictly requires that the IPL isn't lowered
* uncontrolled in an interrupt handler. In the concrete case, the IDE
* interrupt is already a slow int, so the irq is already disabled at the time
* the handler is called, and the IPL has been lowered to the minimum value
* possible. To avoid going below that, STI() checks for being called inside
* an interrupt, and in that case it does nothing. Hope that is reasonable and
* works. (Roman)
*/
#if defined(CONFIG_ATARI) && !defined(CONFIG_AMIGA)
#define STI() \
do { \
if (!intr_count) sti(); \
} while(0)
#elif defined(CONFIG_ATARI)
#define STI() \
do { \
if (!MACH_IS_ATARI || !intr_count) sti(); \
} while(0)
#else /* !defined(CONFIG_ATARI) */
#define STI() sti()
#endif
#define SELECT_DRIVE(hwif,drive) OUT_BYTE((drive)->select.all, hwif->io_base+IDE_SELECT_OFFSET);
#define insl(data_reg, buffer, wcount) insw(data_reg, buffer, wcount<<1)
#define outsl(data_reg, buffer, wcount) outsw(data_reg, buffer, wcount<<1)
#define insw(port, buf, nr) \
if (nr % 16) \
__asm__ __volatile__ \
("movel %0,%/a0; \
movel %1,%/a1; \
movel %2,%/d6; \
subql #1,%/d6; \
1:movew %/a0@,%/a1@+; \
dbra %/d6,1b" : \
: "g" (port), "g" (buf), "g" (nr) \
: "a0", "a1", "d6"); \
else \
__asm__ __volatile__ \
("movel %0,%/a0; \
movel %1,%/a1; \
movel %2,%/d6; \
lsrl #4,%/d6; \
subql #1,%/d6; \
1:movew %/a0@,%/a1@+; \
movew %/a0@,%/a1@+; \
movew %/a0@,%/a1@+; \
movew %/a0@,%/a1@+; \
movew %/a0@,%/a1@+; \
movew %/a0@,%/a1@+; \
movew %/a0@,%/a1@+; \
movew %/a0@,%/a1@+; \
movew %/a0@,%/a1@+; \
movew %/a0@,%/a1@+; \
movew %/a0@,%/a1@+; \
movew %/a0@,%/a1@+; \
movew %/a0@,%/a1@+; \
movew %/a0@,%/a1@+; \
movew %/a0@,%/a1@+; \
movew %/a0@,%/a1@+; \
dbra %/d6,1b" : \
: "g" (port), "g" (buf), "g" (nr) \
: "a0", "a1", "d6");
#define outsw(port, buf, nr) \
if (nr % 16) \
__asm__ __volatile__ \
("movel %0,%/a0; \
movel %1,%/a1; \
movel %2,%/d6; \
subql #1,%/d6; \
1:movew %/a1@+,%/a0@; \
dbra %/d6,1b" : \
: "g" (port), "g" (buf), "g" (nr) \
: "a0", "a1", "d6"); \
else \
__asm__ __volatile__ \
("movel %0,%/a0; \
movel %1,%/a1; \
movel %2,%/d6; \
lsrl #4,%/d6; \
subql #1,%/d6; \
1:movew %/a1@+,%/a0@; \
movew %/a1@+,%/a0@; \
movew %/a1@+,%/a0@; \
movew %/a1@+,%/a0@; \
movew %/a1@+,%/a0@; \
movew %/a1@+,%/a0@; \
movew %/a1@+,%/a0@; \
movew %/a1@+,%/a0@; \
movew %/a1@+,%/a0@; \
movew %/a1@+,%/a0@; \
movew %/a1@+,%/a0@; \
movew %/a1@+,%/a0@; \
movew %/a1@+,%/a0@; \
movew %/a1@+,%/a0@; \
movew %/a1@+,%/a0@; \
movew %/a1@+,%/a0@; \
dbra %/d6,1b" : \
: "g" (port), "g" (buf), "g" (nr) \
: "a0", "a1", "d6");
#define T_CHAR (0x0000) /* char: don't touch */
#define T_SHORT (0x4000) /* short: 12 -> 21 */
#define T_INT (0x8000) /* int: 1234 -> 4321 */
#define T_TEXT (0xc000) /* text: 12 -> 21 */
#define T_MASK_TYPE (0xc000)
#define T_MASK_COUNT (0x3fff)
#define D_CHAR(cnt) (T_CHAR | (cnt))
#define D_SHORT(cnt) (T_SHORT | (cnt))
#define D_INT(cnt) (T_INT | (cnt))
#define D_TEXT(cnt) (T_TEXT | (cnt))
static u_short driveid_types[] = {
D_SHORT(10), /* config - vendor2 */
D_TEXT(20), /* serial_no */
D_SHORT(3), /* buf_type - ecc_bytes */
D_TEXT(48), /* fw_rev - model */
D_CHAR(2), /* max_multsect - vendor3 */
D_SHORT(1), /* dword_io */
D_CHAR(2), /* vendor4 - capability */
D_SHORT(1), /* reserved50 */
D_CHAR(4), /* vendor5 - tDMA */
D_SHORT(4), /* field_valid - cur_sectors */
D_INT(1), /* cur_capacity */
D_CHAR(2), /* multsect - multsect_valid */
D_INT(1), /* lba_capacity */
D_SHORT(194) /* dma_1word - reservedyy */
};
#define num_driveid_types (sizeof(driveid_types)/sizeof(*driveid_types))
static __inline__ void big_endianize_driveid(struct hd_driveid *id)
{
u_char *p = (u_char *)id;
int i, j, cnt;
u_char t;
for (i = 0; i < num_driveid_types; i++) {
cnt = driveid_types[i] & T_MASK_COUNT;
switch (driveid_types[i] & T_MASK_TYPE) {
case T_CHAR:
p += cnt;
break;
case T_SHORT:
for (j = 0; j < cnt; j++) {
t = p[0];
p[0] = p[1];
p[1] = t;
p += 2;
}
break;
case T_INT:
for (j = 0; j < cnt; j++) {
t = p[0];
p[0] = p[3];
p[3] = t;
t = p[1];
p[1] = p[2];
p[2] = t;
p += 4;
}
break;
case T_TEXT:
for (j = 0; j < cnt; j += 2) {
t = p[0];
p[0] = p[1];
p[1] = t;
p += 2;
}
break;
}
}
}
#endif /* _M68K_IDE_H */
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