Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-02 10:11:36 +00:00
Code Issues Packages Projects Releases Wiki Activity

opti621: add PIO 4 support

Browse Source 
* Add PIO 4 support.

While at it:

* Use a single struct ide_port_info instance for OPTi621 and OPTi621X.

Based on a bugreport from Juergen Kosel & inspired by pata_opti.c code.

Tested-by: Juergen Kosel <juergen.kosel@gmx.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-06-15 21:00:22 +02:00
parent 810253d44b
commit 80a65fc5ee
1 changed files with 14 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
drivers/ide/pci/opti621.c
View File

@ -90,16 +90,6 @@
#include <asm/io.h>
//#define OPTI621_MAX_PIO 3
/* In fact, I do not have any PIO 4 drive
* (address: 25 ns, data: 70 ns, recovery: 35 ns),
* but OPTi 82C621 is programmable and it can do (minimal values):
* on 40MHz PCI bus (pulse 25 ns):
* address: 25 ns, data: 25 ns, recovery: 50 ns;
* on 20MHz PCI bus (pulse 50 ns):
* address: 50 ns, data: 50 ns, recovery: 100 ns.
*/
#define READ_REG 0 /* index of Read cycle timing register */
#define WRITE_REG 1 /* index of Write cycle timing register */
#define CNTRL_REG 3 /* index of Control register */
@ -150,13 +140,13 @@ static void opti621_set_pio_mode(ide_drive_t *drive, const u8 pio)
u8 tim, misc, addr_pio = pio, clk;
/* DRDY is default 2 (by OPTi Databook) */
static const u8 addr_timings[2][4] = {
{ 0x20, 0x10, 0x00, 0x00 }, /* 33 MHz */
{ 0x10, 0x10, 0x00, 0x00 }, /* 25 MHz */
static const u8 addr_timings[2][5] = {
{ 0x20, 0x10, 0x00, 0x00, 0x00 }, /* 33 MHz */
{ 0x10, 0x10, 0x00, 0x00, 0x00 }, /* 25 MHz */
};
static const u8 data_rec_timings[2][4] = {
{ 0x5b, 0x45, 0x32, 0x21 }, /* 33 MHz */
{ 0x48, 0x34, 0x21, 0x10 } /* 25 MHz */
static const u8 data_rec_timings[2][5] = {
{ 0x5b, 0x45, 0x32, 0x21, 0x20 }, /* 33 MHz */
{ 0x48, 0x34, 0x21, 0x10, 0x10 } /* 25 MHz */
};
drive->drive_data = XFER_PIO_0 + pio;
@ -209,30 +199,22 @@ static const struct ide_port_ops opti621_port_ops = {
.set_pio_mode = opti621_set_pio_mode,
};
static const struct ide_port_info opti621_chipsets[] __devinitdata = {
{ /* 0 */
.name = "OPTI621",
.enablebits = { {0x45, 0x80, 0x00}, {0x40, 0x08, 0x00} },
.port_ops = &opti621_port_ops,
.host_flags = IDE_HFLAG_NO_DMA,
.pio_mask = ATA_PIO3,
}, { /* 1 */
.name = "OPTI621X",
.enablebits = { {0x45, 0x80, 0x00}, {0x40, 0x08, 0x00} },
.port_ops = &opti621_port_ops,
.host_flags = IDE_HFLAG_NO_DMA,
.pio_mask = ATA_PIO3,
}
static const struct ide_port_info opti621_chipset __devinitdata = {
.name = "OPTI621/X",
.enablebits = { {0x45, 0x80, 0x00}, {0x40, 0x08, 0x00} },
.port_ops = &opti621_port_ops,
.host_flags = IDE_HFLAG_NO_DMA,
.pio_mask = ATA_PIO4,
};
static int __devinit opti621_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
return ide_setup_pci_device(dev, &opti621_chipsets[id->driver_data]);
return ide_setup_pci_device(dev, &opti621_chipset);
}
static const struct pci_device_id opti621_pci_tbl[] = {
{ PCI_VDEVICE(OPTI, PCI_DEVICE_ID_OPTI_82C621), 0 },
{ PCI_VDEVICE(OPTI, PCI_DEVICE_ID_OPTI_82C825), 1 },
{ PCI_VDEVICE(OPTI, PCI_DEVICE_ID_OPTI_82C825), 0 },
{ 0, },
};
MODULE_DEVICE_TABLE(pci, opti621_pci_tbl);