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/*
* Q40 I/O port IDE Driver
*
* (c) Richard Zidlicky
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*
*
*/
#include <linux/types.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/blkdev.h>
#include <linux/hdreg.h>
#include <linux/ide.h>
/*
* Bases of the IDE interfaces
*/
#define Q40IDE_NUM_HWIFS 2
#define PCIDE_BASE1 0x1f0
#define PCIDE_BASE2 0x170
#define PCIDE_BASE3 0x1e8
#define PCIDE_BASE4 0x168
#define PCIDE_BASE5 0x1e0
#define PCIDE_BASE6 0x160
static const unsigned long pcide_bases[Q40IDE_NUM_HWIFS] = {
PCIDE_BASE1, PCIDE_BASE2, /* PCIDE_BASE3, PCIDE_BASE4 , PCIDE_BASE5,
PCIDE_BASE6 */
};
/*
* Offsets from one of the above bases
*/
/* used to do addr translation here but it is easier to do in setup ports */
/*#define IDE_OFF_B(x) ((unsigned long)Q40_ISA_IO_B((IDE_##x##_OFFSET)))*/
#define IDE_OFF_B(x) ((unsigned long)((IDE_##x##_OFFSET)))
#define IDE_OFF_W(x) ((unsigned long)((IDE_##x##_OFFSET)))
static const int pcide_offsets[IDE_NR_PORTS] = {
IDE_OFF_W(DATA), IDE_OFF_B(ERROR), IDE_OFF_B(NSECTOR), IDE_OFF_B(SECTOR),
IDE_OFF_B(LCYL), IDE_OFF_B(HCYL), 6 /*IDE_OFF_B(CURRENT)*/, IDE_OFF_B(STATUS),
518/*IDE_OFF(CMD)*/
};
static int q40ide_default_irq(unsigned long base)
{
switch (base) {
case 0x1f0: return 14;
case 0x170: return 15;
case 0x1e8: return 11;
default:
return 0;
}
}
/*
* Addresses are pretranslated for Q40 ISA access.
*/
void q40_ide_setup_ports ( hw_regs_t *hw,
unsigned long base, int *offsets,
unsigned long ctrl, unsigned long intr,
ide_ack_intr_t *ack_intr,
int irq)
{
int i;
memset(hw, 0, sizeof(hw_regs_t));
for (i = 0; i < IDE_NR_PORTS; i++) {
/* BIG FAT WARNING:
assumption: only DATA port is ever used in 16 bit mode */
if ( i==0 )
hw->io_ports[i] = Q40_ISA_IO_W(base + offsets[i]);
else
hw->io_ports[i] = Q40_ISA_IO_B(base + offsets[i]);
}
hw->irq = irq;
hw->ack_intr = ack_intr;
}
/*
* the static array is needed to have the name reported in /proc/ioports,
* hwif->name unfortunately isn't available yet
*/
static const char *q40_ide_names[Q40IDE_NUM_HWIFS]={
"ide0", "ide1"
};
/*
* Probe for Q40 IDE interfaces
*/
static int __init q40ide_init(void)
{
int i;
ide_hwif_t *hwif;
const char *name;
u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
if (!MACH_IS_Q40)
return -ENODEV;
printk(KERN_INFO "ide: Q40 IDE controller\n");
for (i = 0; i < Q40IDE_NUM_HWIFS; i++) {
hw_regs_t hw;
name = q40_ide_names[i];
if (!request_region(pcide_bases[i], 8, name)) {
printk("could not reserve ports %lx-%lx for %s\n",
pcide_bases[i],pcide_bases[i]+8,name);
continue;
}
if (!request_region(pcide_bases[i]+0x206, 1, name)) {
printk("could not reserve port %lx for %s\n",
pcide_bases[i]+0x206,name);
release_region(pcide_bases[i], 8);
continue;
}
q40_ide_setup_ports(&hw,(unsigned long) pcide_bases[i], (int *)pcide_offsets,
pcide_bases[i]+0x206,
0, NULL,
// m68kide_iops,
q40ide_default_irq(pcide_bases[i]));
hwif = ide_find_port();
if (hwif) {
ide_init_port_data(hwif, hwif->index);
ide_init_port_hw(hwif, &hw);
hwif->mmio = 1;
idx[i] = hwif->index;
}
}
ide_device_add(idx, NULL);
return 0;
}
module_init(q40ide_init);
MODULE_LICENSE("GPL");
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