mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-17 01:04:19 +08:00
f743d04dcf
Now that it can be built modular it needs a MODULE_LICENSE. Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
158 lines
3.5 KiB
C
158 lines
3.5 KiB
C
/*
|
|
* 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(hw.io_ports[IDE_DATA_OFFSET]);
|
|
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");
|