4 * IDE Chipset driver for the Compaq TriFlex IDE controller.
6 * Known to work with the Compaq Workstation 5x00 series.
8 * Copyright (C) 2002 Hewlett-Packard Development Group, L.P.
9 * Author: Torben Mathiasen <torben.mathiasen@hp.com>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 * Loosely based on the piix & svwks drivers.
27 * Not publically available.
30 #include <linux/config.h>
31 #include <linux/types.h>
32 #include <linux/module.h>
33 #include <linux/kernel.h>
34 #include <linux/delay.h>
35 #include <linux/timer.h>
37 #include <linux/ioport.h>
38 #include <linux/blkdev.h>
39 #include <linux/hdreg.h>
40 #include <linux/pci.h>
41 #include <linux/ide.h>
42 #include <linux/init.h>
44 static int triflex_tune_chipset(ide_drive_t *drive, u8 xferspeed)
46 ide_hwif_t *hwif = HWIF(drive);
47 struct pci_dev *dev = hwif->pci_dev;
48 u8 channel_offset = hwif->channel ? 0x74 : 0x70;
50 u32 triflex_timings = 0;
51 u8 unit = (drive->select.b.unit & 0x01);
52 u8 speed = ide_rate_filter(0, xferspeed);
54 pci_read_config_dword(dev, channel_offset, &triflex_timings);
90 triflex_timings &= ~(0xFFFF << (16 * unit));
91 triflex_timings |= (timing << (16 * unit));
93 pci_write_config_dword(dev, channel_offset, triflex_timings);
95 return (ide_config_drive_speed(drive, speed));
98 static void triflex_tune_drive(ide_drive_t *drive, u8 pio)
100 int use_pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
101 (void) triflex_tune_chipset(drive, (XFER_PIO_0 + use_pio));
104 static int triflex_config_drive_for_dma(ide_drive_t *drive)
106 int speed = ide_dma_speed(drive, 0); /* No ultra speeds */
109 u8 pspeed = ide_get_best_pio_mode(drive, 255, 4, NULL);
110 speed = XFER_PIO_0 + pspeed;
113 (void) triflex_tune_chipset(drive, speed);
114 return ide_dma_enable(drive);
117 static int triflex_config_drive_xfer_rate(ide_drive_t *drive)
119 ide_hwif_t *hwif = HWIF(drive);
120 struct hd_driveid *id = drive->id;
122 if (id && (id->capability & 1) && drive->autodma) {
123 if (__ide_dma_bad_drive(drive))
125 if (id->field_valid & 2) {
126 if ((id->dma_mword & hwif->mwdma_mask) ||
127 (id->dma_1word & hwif->swdma_mask)) {
128 if (!triflex_config_drive_for_dma(drive))
135 hwif->tuneproc(drive, 255);
136 return hwif->ide_dma_off_quietly(drive);
139 return hwif->ide_dma_on(drive);
142 static void __init init_hwif_triflex(ide_hwif_t *hwif)
144 hwif->tuneproc = &triflex_tune_drive;
145 hwif->speedproc = &triflex_tune_chipset;
148 hwif->mwdma_mask = 0x07;
149 hwif->swdma_mask = 0x07;
150 hwif->ide_dma_check = &triflex_config_drive_xfer_rate;
154 hwif->drives[0].autodma = hwif->autodma;
155 hwif->drives[1].autodma = hwif->autodma;
158 static ide_pci_device_t triflex_device __devinitdata = {
160 .init_hwif = init_hwif_triflex,
163 .enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
164 .bootable = ON_BOARD,
167 static int __devinit triflex_init_one(struct pci_dev *dev,
168 const struct pci_device_id *id)
170 ide_setup_pci_device(dev, &triflex_device);
175 static struct pci_device_id triflex_pci_tbl[] = {
176 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE,
177 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
180 MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);
182 static struct pci_driver driver = {
183 .name = "TRIFLEX_IDE",
184 .id_table = triflex_pci_tbl,
185 .probe = triflex_init_one,
188 static int triflex_ide_init(void)
190 return ide_pci_register_driver(&driver);
193 module_init(triflex_ide_init);
195 MODULE_AUTHOR("Torben Mathiasen");
196 MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
197 MODULE_LICENSE("GPL");