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 publicly available.
26 */
27
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>
34
35 #define DRV_NAME "triflex"
36
triflex_set_mode(ide_hwif_t * hwif,ide_drive_t * drive)37 static void triflex_set_mode(ide_hwif_t *hwif, ide_drive_t *drive)
38 {
39 struct pci_dev *dev = to_pci_dev(hwif->dev);
40 u32 triflex_timings = 0;
41 u16 timing = 0;
42 u8 channel_offset = hwif->channel ? 0x74 : 0x70, unit = drive->dn & 1;
43
44 pci_read_config_dword(dev, channel_offset, &triflex_timings);
45
46 switch (drive->dma_mode) {
47 case XFER_MW_DMA_2:
48 timing = 0x0103;
49 break;
50 case XFER_MW_DMA_1:
51 timing = 0x0203;
52 break;
53 case XFER_MW_DMA_0:
54 timing = 0x0808;
55 break;
56 case XFER_SW_DMA_2:
57 case XFER_SW_DMA_1:
58 case XFER_SW_DMA_0:
59 timing = 0x0f0f;
60 break;
61 case XFER_PIO_4:
62 timing = 0x0202;
63 break;
64 case XFER_PIO_3:
65 timing = 0x0204;
66 break;
67 case XFER_PIO_2:
68 timing = 0x0404;
69 break;
70 case XFER_PIO_1:
71 timing = 0x0508;
72 break;
73 case XFER_PIO_0:
74 timing = 0x0808;
75 break;
76 }
77
78 triflex_timings &= ~(0xFFFF << (16 * unit));
79 triflex_timings |= (timing << (16 * unit));
80
81 pci_write_config_dword(dev, channel_offset, triflex_timings);
82 }
83
triflex_set_pio_mode(ide_hwif_t * hwif,ide_drive_t * drive)84 static void triflex_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
85 {
86 drive->dma_mode = drive->pio_mode;
87 triflex_set_mode(hwif, drive);
88 }
89
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,
93 };
94
95 static const struct ide_port_info triflex_device __devinitdata = {
96 .name = DRV_NAME,
97 .enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
98 .port_ops = &triflex_port_ops,
99 .pio_mask = ATA_PIO4,
100 .swdma_mask = ATA_SWDMA2,
101 .mwdma_mask = ATA_MWDMA2,
102 };
103
triflex_init_one(struct pci_dev * dev,const struct pci_device_id * id)104 static int __devinit triflex_init_one(struct pci_dev *dev,
105 const struct pci_device_id *id)
106 {
107 return ide_pci_init_one(dev, &triflex_device, NULL);
108 }
109
110 static const struct pci_device_id triflex_pci_tbl[] = {
111 { PCI_VDEVICE(COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE), 0 },
112 { 0, },
113 };
114 MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);
115
116 #ifdef CONFIG_PM
triflex_ide_pci_suspend(struct pci_dev * dev,pm_message_t state)117 static int triflex_ide_pci_suspend(struct pci_dev *dev, pm_message_t state)
118 {
119 /*
120 * We must not disable or powerdown the device.
121 * APM bios refuses to suspend if IDE is not accessible.
122 */
123 pci_save_state(dev);
124 return 0;
125 }
126 #else
127 #define triflex_ide_pci_suspend NULL
128 #endif
129
130 static struct pci_driver triflex_pci_driver = {
131 .name = "TRIFLEX_IDE",
132 .id_table = triflex_pci_tbl,
133 .probe = triflex_init_one,
134 .remove = ide_pci_remove,
135 .suspend = triflex_ide_pci_suspend,
136 .resume = ide_pci_resume,
137 };
138
triflex_ide_init(void)139 static int __init triflex_ide_init(void)
140 {
141 return ide_pci_register_driver(&triflex_pci_driver);
142 }
143
triflex_ide_exit(void)144 static void __exit triflex_ide_exit(void)
145 {
146 pci_unregister_driver(&triflex_pci_driver);
147 }
148
149 module_init(triflex_ide_init);
150 module_exit(triflex_ide_exit);
151
152 MODULE_AUTHOR("Torben Mathiasen");
153 MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
154 MODULE_LICENSE("GPL");
155
156
157