156 lines
3.8 KiB
C
156 lines
3.8 KiB
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 publicly available.
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/ide.h>
|
|
#include <linux/init.h>
|
|
|
|
#define DRV_NAME "triflex"
|
|
|
|
static void triflex_set_mode(ide_hwif_t *hwif, ide_drive_t *drive)
|
|
{
|
|
struct pci_dev *dev = to_pci_dev(hwif->dev);
|
|
u32 triflex_timings = 0;
|
|
u16 timing = 0;
|
|
u8 channel_offset = hwif->channel ? 0x74 : 0x70, unit = drive->dn & 1;
|
|
|
|
pci_read_config_dword(dev, channel_offset, &triflex_timings);
|
|
|
|
switch (drive->dma_mode) {
|
|
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;
|
|
}
|
|
|
|
triflex_timings &= ~(0xFFFF << (16 * unit));
|
|
triflex_timings |= (timing << (16 * unit));
|
|
|
|
pci_write_config_dword(dev, channel_offset, triflex_timings);
|
|
}
|
|
|
|
static void triflex_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
|
|
{
|
|
drive->dma_mode = drive->pio_mode;
|
|
triflex_set_mode(hwif, drive);
|
|
}
|
|
|
|
static const struct ide_port_ops triflex_port_ops = {
|
|
.set_pio_mode = triflex_set_pio_mode,
|
|
.set_dma_mode = triflex_set_mode,
|
|
};
|
|
|
|
static const struct ide_port_info triflex_device = {
|
|
.name = DRV_NAME,
|
|
.enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
|
|
.port_ops = &triflex_port_ops,
|
|
.pio_mask = ATA_PIO4,
|
|
.swdma_mask = ATA_SWDMA2,
|
|
.mwdma_mask = ATA_MWDMA2,
|
|
};
|
|
|
|
static int triflex_init_one(struct pci_dev *dev, const struct pci_device_id *id)
|
|
{
|
|
return ide_pci_init_one(dev, &triflex_device, NULL);
|
|
}
|
|
|
|
static const struct pci_device_id triflex_pci_tbl[] = {
|
|
{ PCI_VDEVICE(COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE), 0 },
|
|
{ 0, },
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);
|
|
|
|
#ifdef CONFIG_PM
|
|
static int triflex_ide_pci_suspend(struct pci_dev *dev, pm_message_t state)
|
|
{
|
|
/*
|
|
* We must not disable or powerdown the device.
|
|
* APM bios refuses to suspend if IDE is not accessible.
|
|
*/
|
|
pci_save_state(dev);
|
|
return 0;
|
|
}
|
|
#else
|
|
#define triflex_ide_pci_suspend NULL
|
|
#endif
|
|
|
|
static struct pci_driver triflex_pci_driver = {
|
|
.name = "TRIFLEX_IDE",
|
|
.id_table = triflex_pci_tbl,
|
|
.probe = triflex_init_one,
|
|
.remove = ide_pci_remove,
|
|
.suspend = triflex_ide_pci_suspend,
|
|
.resume = ide_pci_resume,
|
|
};
|
|
|
|
static int __init triflex_ide_init(void)
|
|
{
|
|
return ide_pci_register_driver(&triflex_pci_driver);
|
|
}
|
|
|
|
static void __exit triflex_ide_exit(void)
|
|
{
|
|
pci_unregister_driver(&triflex_pci_driver);
|
|
}
|
|
|
|
module_init(triflex_ide_init);
|
|
module_exit(triflex_ide_exit);
|
|
|
|
MODULE_AUTHOR("Torben Mathiasen");
|
|
MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|