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/*
* triflex.c
*
* IDE Chipset driver for the Compaq TriFlex IDE controller.
*
* Known to work with the Compaq Workstation 5x00 series.
*
* Copyright (C) 2002 Hewlett-Packard Development Group, L.P.
* Author: Torben Mathiasen <torben.mathiasen@hp.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Loosely based on the piix & svwks drivers.
*
* Documentation:
* Not publically available.
*/
#include <linux/types.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/ioport.h>
#include <linux/blkdev.h>
#include <linux/hdreg.h>
#include <linux/pci.h>
#include <linux/ide.h>
#include <linux/init.h>
static int triflex_tune_chipset(ide_drive_t *drive, u8 xferspeed)
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
u8 channel_offset = hwif->channel ? 0x74 : 0x70;
u16 timing = 0;
u32 triflex_timings = 0;
u8 unit = (drive->select.b.unit & 0x01);
u8 speed = ide_rate_filter(0, xferspeed);
pci_read_config_dword(dev, channel_offset, &triflex_timings);
switch(speed) {
case XFER_MW_DMA_2:
timing = 0x0103;
break;
case XFER_MW_DMA_1:
timing = 0x0203;
break;
case XFER_MW_DMA_0:
timing = 0x0808;
break;
case XFER_SW_DMA_2:
case XFER_SW_DMA_1:
case XFER_SW_DMA_0:
timing = 0x0f0f;
break;
case XFER_PIO_4:
timing = 0x0202;
break;
case XFER_PIO_3:
timing = 0x0204;
break;
case XFER_PIO_2:
timing = 0x0404;
break;
case XFER_PIO_1:
timing = 0x0508;
break;
case XFER_PIO_0:
timing = 0x0808;
break;
default:
return -1;
}
triflex_timings &= ~(0xFFFF << (16 * unit));
triflex_timings |= (timing << (16 * unit));
pci_write_config_dword(dev, channel_offset, triflex_timings);
return (ide_config_drive_speed(drive, speed));
}
static void triflex_tune_drive(ide_drive_t *drive, u8 pio)
{
int use_pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
(void) triflex_tune_chipset(drive, (XFER_PIO_0 + use_pio));
}
static int triflex_config_drive_for_dma(ide_drive_t *drive)
{
int speed = ide_dma_speed(drive, 0); /* No ultra speeds */
if (!speed)
return 0;
(void) triflex_tune_chipset(drive, speed);
return ide_dma_enable(drive);
}
static int triflex_config_drive_xfer_rate(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
struct hd_driveid *id = drive->id;
if ((id->capability & 1) && drive->autodma) {
if (ide_use_dma(drive)) {
if (triflex_config_drive_for_dma(drive))
return hwif->ide_dma_on(drive);
}
}
hwif->tuneproc(drive, 255);
return hwif->ide_dma_off_quietly(drive);
}
static void __devinit init_hwif_triflex(ide_hwif_t *hwif)
{
hwif->tuneproc = &triflex_tune_drive;
hwif->speedproc = &triflex_tune_chipset;
hwif->atapi_dma = 1;
hwif->mwdma_mask = 0x07;
hwif->swdma_mask = 0x07;
hwif->ide_dma_check = &triflex_config_drive_xfer_rate;
if (!noautodma)
hwif->autodma = 1;
hwif->drives[0].autodma = hwif->autodma;
hwif->drives[1].autodma = hwif->autodma;
}
static ide_pci_device_t triflex_device __devinitdata = {
.name = "TRIFLEX",
.init_hwif = init_hwif_triflex,
.channels = 2,
.autodma = AUTODMA,
.enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
.bootable = ON_BOARD,
};
static int __devinit triflex_init_one(struct pci_dev *dev,
const struct pci_device_id *id)
{
return ide_setup_pci_device(dev, &triflex_device);
}
static struct pci_device_id triflex_pci_tbl[] = {
{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ 0, },
};
MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);
static struct pci_driver driver = {
.name = "TRIFLEX_IDE",
.id_table = triflex_pci_tbl,
.probe = triflex_init_one,
};
static int __init triflex_ide_init(void)
{
return ide_pci_register_driver(&driver);
}
module_init(triflex_ide_init);
MODULE_AUTHOR("Torben Mathiasen");
MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
MODULE_LICENSE("GPL");
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