tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * IDE Chipset driver for the Compaq TriFlex IDE controller.
3 *
4 * Known to work with the Compaq Workstation 5x00 series.
5 *
6 * Copyright (C) 2002 Hewlett-Packard Development Group, L.P.
7 * Author: Torben Mathiasen <torben.mathiasen@hp.com>
8 *
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.
12 *
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.
17 *
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
21 *
22 * Loosely based on the piix & svwks drivers.
23 *
24 * Documentation:
25 * Not publically available.
26 */
27
28#include <linux/types.h>
29#include <linux/module.h>
30#include <linux/kernel.h>
31#include <linux/delay.h>
32#include <linux/timer.h>
33#include <linux/mm.h>
34#include <linux/ioport.h>
35#include <linux/blkdev.h>
36#include <linux/hdreg.h>
37#include <linux/pci.h>
38#include <linux/ide.h>
39#include <linux/init.h>
40
41static void triflex_set_mode(ide_drive_t *drive, const u8 speed)
42{
43 ide_hwif_t *hwif = HWIF(drive);
44 struct pci_dev *dev = to_pci_dev(hwif->dev);
45 u8 channel_offset = hwif->channel ? 0x74 : 0x70;
46 u16 timing = 0;
47 u32 triflex_timings = 0;
48 u8 unit = (drive->select.b.unit & 0x01);
49
50 pci_read_config_dword(dev, channel_offset, &triflex_timings);
51
52 switch(speed) {
53 case XFER_MW_DMA_2:
54 timing = 0x0103;
55 break;
56 case XFER_MW_DMA_1:
57 timing = 0x0203;
58 break;
59 case XFER_MW_DMA_0:
60 timing = 0x0808;
61 break;
62 case XFER_SW_DMA_2:
63 case XFER_SW_DMA_1:
64 case XFER_SW_DMA_0:
65 timing = 0x0f0f;
66 break;
67 case XFER_PIO_4:
68 timing = 0x0202;
69 break;
70 case XFER_PIO_3:
71 timing = 0x0204;
72 break;
73 case XFER_PIO_2:
74 timing = 0x0404;
75 break;
76 case XFER_PIO_1:
77 timing = 0x0508;
78 break;
79 case XFER_PIO_0:
80 timing = 0x0808;
81 break;
82 }
83
84 triflex_timings &= ~(0xFFFF << (16 * unit));
85 triflex_timings |= (timing << (16 * unit));
86
87 pci_write_config_dword(dev, channel_offset, triflex_timings);
88}
89
90static void triflex_set_pio_mode(ide_drive_t *drive, const u8 pio)
91{
92 triflex_set_mode(drive, XFER_PIO_0 + pio);
93}
94
95static void __devinit init_hwif_triflex(ide_hwif_t *hwif)
96{
97 hwif->set_pio_mode = &triflex_set_pio_mode;
98 hwif->set_dma_mode = &triflex_set_mode;
99}
100
101static const struct ide_port_info triflex_device __devinitdata = {
102 .name = "TRIFLEX",
103 .init_hwif = init_hwif_triflex,
104 .enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
105 .host_flags = IDE_HFLAG_BOOTABLE,
106 .pio_mask = ATA_PIO4,
107 .swdma_mask = ATA_SWDMA2,
108 .mwdma_mask = ATA_MWDMA2,
109};
110
111static int __devinit triflex_init_one(struct pci_dev *dev,
112 const struct pci_device_id *id)
113{
114 return ide_setup_pci_device(dev, &triflex_device);
115}
116
117static const struct pci_device_id triflex_pci_tbl[] = {
118 { PCI_VDEVICE(COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE), 0 },
119 { 0, },
120};
121MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);
122
123static struct pci_driver driver = {
124 .name = "TRIFLEX_IDE",
125 .id_table = triflex_pci_tbl,
126 .probe = triflex_init_one,
127};
128
129static int __init triflex_ide_init(void)
130{
131 return ide_pci_register_driver(&driver);
132}
133
134module_init(triflex_ide_init);
135
136MODULE_AUTHOR("Torben Mathiasen");
137MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
138MODULE_LICENSE("GPL");
139
140