2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* H8/300 generic IDE interface
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/init.h>
|
|
|
|
#include <linux/ide.h>
|
|
|
|
|
|
|
|
#include <asm/io.h>
|
|
|
|
#include <asm/irq.h>
|
|
|
|
|
2008-07-16 12:33:42 -06:00
|
|
|
#define DRV_NAME "ide-h8300"
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
#define bswap(d) \
|
|
|
|
({ \
|
|
|
|
u16 r; \
|
|
|
|
__asm__("mov.b %w1,r1h\n\t" \
|
|
|
|
"mov.b %x1,r1l\n\t" \
|
|
|
|
"mov.w r1,%0" \
|
|
|
|
:"=r"(r) \
|
|
|
|
:"r"(d) \
|
|
|
|
:"er1"); \
|
|
|
|
(r); \
|
|
|
|
})
|
|
|
|
|
|
|
|
static void mm_outw(u16 d, unsigned long a)
|
|
|
|
{
|
|
|
|
__asm__("mov.b %w0,r2h\n\t"
|
|
|
|
"mov.b %x0,r2l\n\t"
|
|
|
|
"mov.w r2,@%1"
|
|
|
|
:
|
|
|
|
:"r"(d),"r"(a)
|
|
|
|
:"er2");
|
|
|
|
}
|
|
|
|
|
|
|
|
static u16 mm_inw(unsigned long a)
|
|
|
|
{
|
|
|
|
register u16 r __asm__("er0");
|
|
|
|
__asm__("mov.w @%1,r2\n\t"
|
|
|
|
"mov.b r2l,%x0\n\t"
|
|
|
|
"mov.b r2h,%w0"
|
|
|
|
:"=r"(r)
|
|
|
|
:"r"(a)
|
|
|
|
:"er2");
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2008-04-28 15:44:40 -06:00
|
|
|
static void h8300_tf_load(ide_drive_t *drive, ide_task_t *task)
|
|
|
|
{
|
|
|
|
ide_hwif_t *hwif = drive->hwif;
|
|
|
|
struct ide_io_ports *io_ports = &hwif->io_ports;
|
|
|
|
struct ide_taskfile *tf = &task->tf;
|
|
|
|
u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
|
|
|
|
|
|
|
|
if (task->tf_flags & IDE_TFLAG_FLAGGED)
|
|
|
|
HIHI = 0xFF;
|
|
|
|
|
|
|
|
if (task->tf_flags & IDE_TFLAG_OUT_DATA)
|
|
|
|
mm_outw((tf->hob_data << 8) | tf->data, io_ports->data_addr);
|
|
|
|
|
|
|
|
if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
|
|
|
|
outb(tf->hob_feature, io_ports->feature_addr);
|
|
|
|
if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
|
|
|
|
outb(tf->hob_nsect, io_ports->nsect_addr);
|
|
|
|
if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
|
|
|
|
outb(tf->hob_lbal, io_ports->lbal_addr);
|
|
|
|
if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
|
|
|
|
outb(tf->hob_lbam, io_ports->lbam_addr);
|
|
|
|
if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
|
|
|
|
outb(tf->hob_lbah, io_ports->lbah_addr);
|
|
|
|
|
|
|
|
if (task->tf_flags & IDE_TFLAG_OUT_FEATURE)
|
|
|
|
outb(tf->feature, io_ports->feature_addr);
|
|
|
|
if (task->tf_flags & IDE_TFLAG_OUT_NSECT)
|
|
|
|
outb(tf->nsect, io_ports->nsect_addr);
|
|
|
|
if (task->tf_flags & IDE_TFLAG_OUT_LBAL)
|
|
|
|
outb(tf->lbal, io_ports->lbal_addr);
|
|
|
|
if (task->tf_flags & IDE_TFLAG_OUT_LBAM)
|
|
|
|
outb(tf->lbam, io_ports->lbam_addr);
|
|
|
|
if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
|
|
|
|
outb(tf->lbah, io_ports->lbah_addr);
|
|
|
|
|
|
|
|
if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
|
|
|
|
outb((tf->device & HIHI) | drive->select.all,
|
|
|
|
io_ports->device_addr);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void h8300_tf_read(ide_drive_t *drive, ide_task_t *task)
|
|
|
|
{
|
|
|
|
ide_hwif_t *hwif = drive->hwif;
|
|
|
|
struct ide_io_ports *io_ports = &hwif->io_ports;
|
|
|
|
struct ide_taskfile *tf = &task->tf;
|
|
|
|
|
|
|
|
if (task->tf_flags & IDE_TFLAG_IN_DATA) {
|
|
|
|
u16 data = mm_inw(io_ports->data_addr);
|
|
|
|
|
|
|
|
tf->data = data & 0xff;
|
|
|
|
tf->hob_data = (data >> 8) & 0xff;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* be sure we're looking at the low order bits */
|
2008-07-15 13:21:50 -06:00
|
|
|
outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr);
|
2008-04-28 15:44:40 -06:00
|
|
|
|
|
|
|
if (task->tf_flags & IDE_TFLAG_IN_NSECT)
|
|
|
|
tf->nsect = inb(io_ports->nsect_addr);
|
|
|
|
if (task->tf_flags & IDE_TFLAG_IN_LBAL)
|
|
|
|
tf->lbal = inb(io_ports->lbal_addr);
|
|
|
|
if (task->tf_flags & IDE_TFLAG_IN_LBAM)
|
|
|
|
tf->lbam = inb(io_ports->lbam_addr);
|
|
|
|
if (task->tf_flags & IDE_TFLAG_IN_LBAH)
|
|
|
|
tf->lbah = inb(io_ports->lbah_addr);
|
|
|
|
if (task->tf_flags & IDE_TFLAG_IN_DEVICE)
|
|
|
|
tf->device = inb(io_ports->device_addr);
|
|
|
|
|
|
|
|
if (task->tf_flags & IDE_TFLAG_LBA48) {
|
2008-07-15 13:21:50 -06:00
|
|
|
outb(ATA_DEVCTL_OBS | 0x80, io_ports->ctl_addr);
|
2008-04-28 15:44:40 -06:00
|
|
|
|
|
|
|
if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
|
|
|
|
tf->hob_feature = inb(io_ports->feature_addr);
|
|
|
|
if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
|
|
|
|
tf->hob_nsect = inb(io_ports->nsect_addr);
|
|
|
|
if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
|
|
|
|
tf->hob_lbal = inb(io_ports->lbal_addr);
|
|
|
|
if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
|
|
|
|
tf->hob_lbam = inb(io_ports->lbam_addr);
|
|
|
|
if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
|
|
|
|
tf->hob_lbah = inb(io_ports->lbah_addr);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
static void mm_outsw(unsigned long addr, void *buf, u32 len)
|
|
|
|
{
|
|
|
|
unsigned short *bp = (unsigned short *)buf;
|
|
|
|
for (; len > 0; len--, bp++)
|
|
|
|
*(volatile u16 *)addr = bswap(*bp);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void mm_insw(unsigned long addr, void *buf, u32 len)
|
|
|
|
{
|
|
|
|
unsigned short *bp = (unsigned short *)buf;
|
|
|
|
for (; len > 0; len--, bp++)
|
|
|
|
*bp = bswap(*(volatile u16 *)addr);
|
|
|
|
}
|
|
|
|
|
2008-04-28 15:44:37 -06:00
|
|
|
static void h8300_input_data(ide_drive_t *drive, struct request *rq,
|
|
|
|
void *buf, unsigned int len)
|
|
|
|
{
|
|
|
|
mm_insw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void h8300_output_data(ide_drive_t *drive, struct request *rq,
|
|
|
|
void *buf, unsigned int len)
|
|
|
|
{
|
|
|
|
mm_outsw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
|
|
|
|
}
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
#define H8300_IDE_GAP (2)
|
|
|
|
|
|
|
|
static inline void hw_setup(hw_regs_t *hw)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
memset(hw, 0, sizeof(hw_regs_t));
|
2008-04-27 07:38:32 -06:00
|
|
|
for (i = 0; i <= 7; i++)
|
|
|
|
hw->io_ports_array[i] = CONFIG_H8300_IDE_BASE + H8300_IDE_GAP*i;
|
|
|
|
hw->io_ports.ctl_addr = CONFIG_H8300_IDE_ALT;
|
2005-04-16 16:20:36 -06:00
|
|
|
hw->irq = EXT_IRQ0 + CONFIG_H8300_IDE_IRQ;
|
|
|
|
hw->chipset = ide_generic;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void hwif_setup(ide_hwif_t *hwif)
|
|
|
|
{
|
|
|
|
default_hwif_iops(hwif);
|
|
|
|
|
2008-04-28 15:44:40 -06:00
|
|
|
hwif->tf_load = h8300_tf_load;
|
|
|
|
hwif->tf_read = h8300_tf_read;
|
|
|
|
|
2008-04-28 15:44:37 -06:00
|
|
|
hwif->input_data = h8300_input_data;
|
|
|
|
hwif->output_data = h8300_output_data;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2008-07-16 12:33:42 -06:00
|
|
|
static const struct ide_port_info h8300_port_info = {
|
|
|
|
.host_flags = IDE_HFLAG_NO_IO_32BIT | IDE_HFLAG_NO_DMA,
|
|
|
|
};
|
|
|
|
|
2008-01-26 12:13:07 -07:00
|
|
|
static int __init h8300_ide_init(void)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
ide_hwif_t *hwif;
|
2008-01-26 12:13:06 -07:00
|
|
|
int index;
|
2008-07-23 11:55:50 -06:00
|
|
|
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
|
2008-01-26 12:13:06 -07:00
|
|
|
u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2008-07-16 12:33:43 -06:00
|
|
|
printk(KERN_INFO DRV_NAME ": H8/300 generic IDE interface\n");
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
if (!request_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8, "ide-h8300"))
|
|
|
|
goto out_busy;
|
|
|
|
if (!request_region(CONFIG_H8300_IDE_ALT, H8300_IDE_GAP, "ide-h8300")) {
|
|
|
|
release_region(CONFIG_H8300_IDE_BASE, H8300_IDE_GAP*8);
|
|
|
|
goto out_busy;
|
|
|
|
}
|
|
|
|
|
|
|
|
hw_setup(&hw);
|
|
|
|
|
2008-07-16 12:33:42 -06:00
|
|
|
hwif = ide_find_port_slot(&h8300_port_info);
|
|
|
|
if (hwif == NULL)
|
2008-01-26 12:13:07 -07:00
|
|
|
return -ENOENT;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2008-01-26 12:13:06 -07:00
|
|
|
index = hwif->index;
|
2005-04-16 16:20:36 -06:00
|
|
|
hwif_setup(hwif);
|
2008-01-26 12:13:06 -07:00
|
|
|
|
|
|
|
idx[0] = index;
|
|
|
|
|
2008-07-23 11:55:50 -06:00
|
|
|
ide_device_add(idx, &h8300_port_info, hws);
|
2008-01-26 12:13:06 -07:00
|
|
|
|
2008-01-26 12:13:07 -07:00
|
|
|
return 0;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
out_busy:
|
|
|
|
printk(KERN_ERR "ide-h8300: IDE I/F resource already used.\n");
|
2008-01-26 12:13:07 -07:00
|
|
|
|
|
|
|
return -EBUSY;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
2008-01-26 12:13:07 -07:00
|
|
|
|
|
|
|
module_init(h8300_ide_init);
|
2008-04-02 13:22:03 -06:00
|
|
|
|
|
|
|
MODULE_LICENSE("GPL");
|