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/*
* linux/include/asm-m68k/ide.h
*
* Copyright (C) 1994-1996 Linus Torvalds & authors
*/
/* Copyright(c) 1996 Kars de Jong */
/* Based on the ide driver from 1.2.13pl8 */
/*
* Credits (alphabetical):
*
* - Bjoern Brauel
* - Kars de Jong
* - Torsten Ebeling
* - Dwight Engen
* - Thorsten Floeck
* - Roman Hodek
* - Guenther Kelleter
* - Chris Lawrence
* - Michael Rausch
* - Christian Sauer
* - Michael Schmitz
* - Jes Soerensen
* - Michael Thurm
* - Geert Uytterhoeven
*/
#ifndef _M68K_IDE_H
#define _M68K_IDE_H
#ifdef __KERNEL__
#include <linux/config.h>
#include <asm/setup.h>
#include <asm/io.h>
#include <asm/irq.h>
#ifdef CONFIG_ATARI
#include <linux/interrupt.h>
#include <asm/atari_stdma.h>
#endif
#ifdef CONFIG_MAC
#include <asm/macints.h>
#endif
#ifndef MAX_HWIFS
#define MAX_HWIFS 4 /* same as the other archs */
#endif
static __inline__ int ide_default_irq(ide_ioreg_t base)
{
return 0;
}
static __inline__ ide_ioreg_t ide_default_io_base(int index)
{
return 0;
}
/*
* Set up a hw structure for a specified data port, control port and IRQ.
* This should follow whatever the default interface uses.
*/
static __inline__ void ide_init_hwif_ports(hw_regs_t *hw, ide_ioreg_t data_port, ide_ioreg_t ctrl_port, int *irq)
{
if (data_port || ctrl_port)
printk("ide_init_hwif_ports: must not be called\n");
}
/*
* This registers the standard ports for this architecture with the IDE
* driver.
*/
static __inline__ void ide_init_default_hwifs(void)
{
}
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 or 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)
{
#ifdef CONFIG_AMIGA
if (MACH_IS_AMIGA)
return request_irq(irq, handler, 0, device, dev_id);
#endif /* CONFIG_AMIGA */
#ifdef CONFIG_Q40
if (MACH_IS_Q40)
return request_irq(irq, handler, 0, device, dev_id);
#endif /* CONFIG_Q40*/
#ifdef CONFIG_MAC
if (MACH_IS_MAC)
return request_irq(irq, handler, 0, device, dev_id);
#endif /* CONFIG_MAC */
return 0;
}
static __inline__ void ide_free_irq(unsigned int irq, void *dev_id)
{
#ifdef CONFIG_AMIGA
if (MACH_IS_AMIGA)
free_irq(irq, dev_id);
#endif /* CONFIG_AMIGA */
#ifdef CONFIG_Q40
if (MACH_IS_Q40)
free_irq(irq, dev_id);
#endif /* CONFIG_Q40*/
#ifdef CONFIG_MAC
if (MACH_IS_MAC)
free_irq(irq, dev_id);
#endif /* CONFIG_MAC */
}
/*
* We should really implement those some day.
*/
static __inline__ int ide_check_region (ide_ioreg_t from, unsigned int extent)
{
return 0;
}
static __inline__ void ide_request_region (ide_ioreg_t from, unsigned int extent, const char *name)
{
#ifdef CONFIG_Q40
if (MACH_IS_Q40)
request_region((q40ide_ioreg_t)from,extent,name);
#endif
}
static __inline__ void ide_release_region (ide_ioreg_t from, unsigned int extent)
{
#ifdef CONFIG_Q40
if (MACH_IS_Q40)
release_region((q40ide_ioreg_t)from,extent);
#endif
}
#undef SUPPORT_SLOW_DATA_PORTS
#define SUPPORT_SLOW_DATA_PORTS 0
#undef SUPPORT_VLB_SYNC
#define SUPPORT_VLB_SYNC 0
/* this definition is used only on startup .. */
#undef HD_DATA
#define HD_DATA NULL
/* get rid of defs from io.h - ide has its private and conflicting versions */
#undef inb
#undef inw
#undef outb
#undef outw
#undef inb_p
#undef outb_p
#undef insw
#undef outsw
#undef insw_swapw
#undef outsw_swapw
/*
* define IO method and translation,
* so far only Q40 has ide-if on ISA
*/
#ifndef CONFIG_Q40
#define ADDR_TRANS_B(_addr_) (_addr_)
#define ADDR_TRANS_W(_addr_) (_addr_)
#else
#define ADDR_TRANS_B(_addr_) (MACH_IS_Q40 ? ((unsigned char *)Q40_ISA_IO_B(_addr_)) : (_addr_))
#define ADDR_TRANS_W(_addr_) (MACH_IS_Q40 ? ((unsigned char *)Q40_ISA_IO_W(_addr_)) : (_addr_))
#endif
#define inb(p) in_8(ADDR_TRANS_B(p))
#define inb_p(p) in_8(ADDR_TRANS_B(p))
#define inw(p) in_be16(ADDR_TRANS_W(p))
#define outb(v,p) out_8(ADDR_TRANS_B(p),v)
#define outb_p(v,p) out_8(ADDR_TRANS_B(p),v)
#define outw(v,p) out_be16(ADDR_TRANS_W(p),v)
#define insw(port, buf, nr) raw_insw(ADDR_TRANS_W(port), buf, nr)
#define outsw(port, buf, nr) raw_outsw(ADDR_TRANS_W(port), buf, nr)
#define insl(data_reg, buffer, wcount) insw(data_reg, buffer, (wcount)<<1)
#define outsl(data_reg, buffer, wcount) outsw(data_reg, buffer, (wcount)<<1)
#if defined(CONFIG_ATARI) || defined(CONFIG_Q40)
#define insl_swapw(data_reg, buffer, wcount) \
insw_swapw(data_reg, buffer, (wcount)<<1)
#define outsl_swapw(data_reg, buffer, wcount) \
outsw_swapw(data_reg, buffer, (wcount)<<1)
#define insw_swapw(port, buf, nr) raw_insw_swapw(ADDR_TRANS_W(port), buf, nr)
#define outsw_swapw(port, buf, nr) raw_outsw_swapw(ADDR_TRANS_W(port),buf,nr)
#endif /* CONFIG_ATARI || CONFIG_Q40 */
#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))
/* Q40 and Atari have byteswapped IDE bus and since many interesting
* values in the identification string are text, chars and words they
* happened to be almost correct without swapping.. However *_capacity
* is needed for drives over 8 GB. RZ */
#if defined(CONFIG_Q40) || defined(CONFIG_ATARI)
#define M68K_IDE_SWAPW (MACH_IS_Q40 || MACH_IS_ATARI)
#endif
#if defined(CONFIG_AMIGA) || defined (CONFIG_MAC) || defined(M68K_IDE_SWAPW)
static u_short driveid_types[] = {
D_SHORT(10), /* config - vendor2 */
D_TEXT(20), /* serial_no */
D_SHORT(3), /* buf_type, buf_size - 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 - reserved */
};
#define num_driveid_types (sizeof(driveid_types)/sizeof(*driveid_types))
#endif /* CONFIG_AMIGA */
static __inline__ void ide_fix_driveid(struct hd_driveid *id)
{
#if defined(CONFIG_AMIGA) || defined (CONFIG_MAC) || defined(M68K_IDE_SWAPW)
u_char *p = (u_char *)id;
int i, j, cnt;
u_char t;
if (!MACH_IS_AMIGA && !MACH_IS_MAC && !MACH_IS_Q40 && !MACH_IS_ATARI)
return;
#ifdef M68K_IDE_SWAPW
if (M68K_IDE_SWAPW) /* fix bus byteorder first */
for (i=0; i < 512; i+=2) {
t = p[i]; p[i] = p[i+1]; p[i+1] = t;
}
#endif
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 /* CONFIG_AMIGA */
}
static __inline__ void ide_release_lock (int *ide_lock)
{
#ifdef CONFIG_ATARI
if (MACH_IS_ATARI) {
if (*ide_lock == 0) {
printk("ide_release_lock: bug\n");
return;
}
*ide_lock = 0;
stdma_release();
}
#endif /* CONFIG_ATARI */
}
static __inline__ void ide_get_lock (int *ide_lock, void (*handler)(int, void *, struct pt_regs *), void *data)
{
#ifdef CONFIG_ATARI
if (MACH_IS_ATARI) {
if (*ide_lock == 0) {
if (in_interrupt() > 0)
panic( "Falcon IDE hasn't ST-DMA lock in interrupt" );
stdma_lock(handler, data);
*ide_lock = 1;
}
}
#endif /* CONFIG_ATARI */
}
#define ide_ack_intr(hwif) ((hwif)->hw.ack_intr ? (hwif)->hw.ack_intr(hwif) : 1)
/*
* On the Atari, we sometimes can't enable interrupts:
*/
/* 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)
*/
#ifdef MACH_ATARI_ONLY
#define ide__sti() \
do { \
if (!in_interrupt()) __sti(); \
} while(0)
#elif defined(CONFIG_ATARI)
#define ide__sti() \
do { \
if (!MACH_IS_ATARI || !in_interrupt()) sti(); \
} while(0)
#else /* !defined(CONFIG_ATARI) */
#define ide__sti() __sti()
#endif
#endif /* __KERNEL__ */
#endif /* _M68K_IDE_H */
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