2 * IDE Chipset driver for the Compaq TriFlex IDE controller.
4 * Known to work with the Compaq Workstation 5x00 series.
6 * Copyright (C) 2002 Hewlett-Packard Development Group, L.P.
7 * Author: Torben Mathiasen <torben.mathiasen@hp.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * Loosely based on the piix & svwks drivers.
25 * Not publicly available.
28 #include <linux/types.h>
29 #include <linux/module.h>
30 #include <linux/kernel.h>
31 #include <linux/pci.h>
32 #include <linux/ide.h>
33 #include <linux/init.h>
35 #define DRV_NAME "triflex"
37 static void triflex_set_mode(ide_hwif_t *hwif, ide_drive_t *drive)
39 struct pci_dev *dev = to_pci_dev(hwif->dev);
40 u32 triflex_timings = 0;
42 u8 channel_offset = hwif->channel ? 0x74 : 0x70, unit = drive->dn & 1;
44 pci_read_config_dword(dev, channel_offset, &triflex_timings);
46 switch (drive->dma_mode) {
78 triflex_timings &= ~(0xFFFF << (16 * unit));
79 triflex_timings |= (timing << (16 * unit));
81 pci_write_config_dword(dev, channel_offset, triflex_timings);
84 static void triflex_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
86 drive->dma_mode = drive->pio_mode;
87 triflex_set_mode(hwif, drive);
90 static const struct ide_port_ops triflex_port_ops = {
91 .set_pio_mode = triflex_set_pio_mode,
92 .set_dma_mode = triflex_set_mode,
95 static const struct ide_port_info triflex_device = {
97 .enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
98 .port_ops = &triflex_port_ops,
100 .swdma_mask = ATA_SWDMA2,
101 .mwdma_mask = ATA_MWDMA2,
104 static int triflex_init_one(struct pci_dev *dev, const struct pci_device_id *id)
106 return ide_pci_init_one(dev, &triflex_device, NULL);
109 static const struct pci_device_id triflex_pci_tbl[] = {
110 { PCI_VDEVICE(COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE), 0 },
113 MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);
116 static int triflex_ide_pci_suspend(struct pci_dev *dev, pm_message_t state)
119 * We must not disable or powerdown the device.
120 * APM bios refuses to suspend if IDE is not accessible.
126 #define triflex_ide_pci_suspend NULL
129 static struct pci_driver triflex_pci_driver = {
130 .name = "TRIFLEX_IDE",
131 .id_table = triflex_pci_tbl,
132 .probe = triflex_init_one,
133 .remove = ide_pci_remove,
134 .suspend = triflex_ide_pci_suspend,
135 .resume = ide_pci_resume,
138 static int __init triflex_ide_init(void)
140 return ide_pci_register_driver(&triflex_pci_driver);
143 static void __exit triflex_ide_exit(void)
145 pci_unregister_driver(&triflex_pci_driver);
148 module_init(triflex_ide_init);
149 module_exit(triflex_ide_exit);
151 MODULE_AUTHOR("Torben Mathiasen");
152 MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
153 MODULE_LICENSE("GPL");