1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* 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>
*
* 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");
|
