linux/drivers/ide/h8300/ide-h8300.c
Bartlomiej Zolnierkiewicz c413b9b94d ide: add struct ide_port_info instances to legacy host drivers
* Remove 'struct pci_dev *dev' argument from ide_hwif_setup_dma().

* Un-static ide_hwif_setup_dma() and add CONFIG_BLK_DEV_IDEDMA_PCI=n version.

* Add 'const struct ide_port_info *d' argument to ide_device_add[_all]().

* Factor out generic ports init from ide_pci_setup_ports() to ide_init_port(),
  move it to ide-probe.c and call it in in ide_device_add_all() instead of
  ide_pci_setup_ports().

* Move ->mate setup to ide_device_add_all() from ide_port_init().

* Add IDE_HFLAG_NO_AUTOTUNE host flag for host drivers that don't enable
  ->autotune currently.

* Setup hwif->chipset in ide_init_port() but iff pi->chipset is set
  (to not override setup done by ide_hwif_configure()).

* Add ETRAX host handling to ide_device_add_all().

* cmd640.c: set IDE_HFLAG_ABUSE_* also for CONFIG_BLK_DEV_CMD640_ENHANCED=n.

* pmac.c: make pmac_ide_setup_dma() return an error value and move DMA masks
  setup to pmac_ide_setup_device().

* Add 'struct ide_port_info' instances to legacy host drivers, pass them to
  ide_device_add() calls and then remove open-coded ports initialization.

Reviewed-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-02-02 19:56:31 +01:00

127 lines
2.4 KiB
C

/*
* H8/300 generic IDE interface
*/
#include <linux/init.h>
#include <linux/ide.h>
#include <asm/io.h>
#include <asm/irq.h>
#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;
}
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);
}
#define H8300_IDE_GAP (2)
static inline void hw_setup(hw_regs_t *hw)
{
int i;
memset(hw, 0, sizeof(hw_regs_t));
for (i = 0; i <= IDE_STATUS_OFFSET; i++)
hw->io_ports[i] = CONFIG_H8300_IDE_BASE + H8300_IDE_GAP*i;
hw->io_ports[IDE_CONTROL_OFFSET] = CONFIG_H8300_IDE_ALT;
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);
hwif->mmio = 1;
hwif->OUTW = mm_outw;
hwif->OUTSW = mm_outsw;
hwif->INW = mm_inw;
hwif->INSW = mm_insw;
hwif->OUTSL = NULL;
hwif->INSL = NULL;
}
static int __init h8300_ide_init(void)
{
hw_regs_t hw;
ide_hwif_t *hwif;
int index;
u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
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);
/* register if */
hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
if (hwif == NULL) {
printk(KERN_ERR "ide-h8300: IDE I/F register failed\n");
return -ENOENT;
}
index = hwif->index;
ide_init_port_data(hwif, index);
ide_init_port_hw(hwif, &hw);
hwif_setup(hwif);
printk(KERN_INFO "ide%d: H8/300 generic IDE interface\n", index);
idx[0] = index;
ide_device_add(idx, NULL);
return 0;
out_busy:
printk(KERN_ERR "ide-h8300: IDE I/F resource already used.\n");
return -EBUSY;
}
module_init(h8300_ide_init);