treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
[linux-2.6-block.git] / drivers / ide / triflex.c
CommitLineData
45051539 1// SPDX-License-Identifier: GPL-2.0-only
1da177e4 2/*
1da177e4
LT
3 * IDE Chipset driver for the Compaq TriFlex IDE controller.
4 *
5 * Known to work with the Compaq Workstation 5x00 series.
6 *
7 * Copyright (C) 2002 Hewlett-Packard Development Group, L.P.
8 * Author: Torben Mathiasen <torben.mathiasen@hp.com>
1da177e4
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9 *
10 * Loosely based on the piix & svwks drivers.
11 *
12 * Documentation:
25985edc 13 * Not publicly available.
1da177e4
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14 */
15
1da177e4
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16#include <linux/types.h>
17#include <linux/module.h>
18#include <linux/kernel.h>
1da177e4
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19#include <linux/pci.h>
20#include <linux/ide.h>
21#include <linux/init.h>
22
ced3ec8a
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23#define DRV_NAME "triflex"
24
8776168c 25static void triflex_set_mode(ide_hwif_t *hwif, ide_drive_t *drive)
1da177e4 26{
36501650 27 struct pci_dev *dev = to_pci_dev(hwif->dev);
1da177e4 28 u32 triflex_timings = 0;
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29 u16 timing = 0;
30 u8 channel_offset = hwif->channel ? 0x74 : 0x70, unit = drive->dn & 1;
31
1da177e4 32 pci_read_config_dword(dev, channel_offset, &triflex_timings);
123995b9 33
8776168c 34 switch (drive->dma_mode) {
1da177e4
LT
35 case XFER_MW_DMA_2:
36 timing = 0x0103;
37 break;
38 case XFER_MW_DMA_1:
39 timing = 0x0203;
40 break;
41 case XFER_MW_DMA_0:
42 timing = 0x0808;
43 break;
44 case XFER_SW_DMA_2:
45 case XFER_SW_DMA_1:
46 case XFER_SW_DMA_0:
47 timing = 0x0f0f;
48 break;
49 case XFER_PIO_4:
50 timing = 0x0202;
51 break;
52 case XFER_PIO_3:
53 timing = 0x0204;
54 break;
55 case XFER_PIO_2:
56 timing = 0x0404;
57 break;
58 case XFER_PIO_1:
59 timing = 0x0508;
60 break;
61 case XFER_PIO_0:
62 timing = 0x0808;
63 break;
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LT
64 }
65
66 triflex_timings &= ~(0xFFFF << (16 * unit));
67 triflex_timings |= (timing << (16 * unit));
68
69 pci_write_config_dword(dev, channel_offset, triflex_timings);
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70}
71
e085b3ca 72static void triflex_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
1da177e4 73{
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74 drive->dma_mode = drive->pio_mode;
75 triflex_set_mode(hwif, drive);
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76}
77
ac95beed
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78static const struct ide_port_ops triflex_port_ops = {
79 .set_pio_mode = triflex_set_pio_mode,
80 .set_dma_mode = triflex_set_mode,
81};
1da177e4 82
fe31edc8 83static const struct ide_port_info triflex_device = {
ced3ec8a 84 .name = DRV_NAME,
1da177e4 85 .enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
ac95beed 86 .port_ops = &triflex_port_ops,
4099d143 87 .pio_mask = ATA_PIO4,
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88 .swdma_mask = ATA_SWDMA2,
89 .mwdma_mask = ATA_MWDMA2,
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90};
91
fe31edc8 92static int triflex_init_one(struct pci_dev *dev, const struct pci_device_id *id)
1da177e4 93{
6cdf6eb3 94 return ide_pci_init_one(dev, &triflex_device, NULL);
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95}
96
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97static const struct pci_device_id triflex_pci_tbl[] = {
98 { PCI_VDEVICE(COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE), 0 },
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99 { 0, },
100};
101MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);
102
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MP
103#ifdef CONFIG_PM
104static int triflex_ide_pci_suspend(struct pci_dev *dev, pm_message_t state)
105{
106 /*
107 * We must not disable or powerdown the device.
108 * APM bios refuses to suspend if IDE is not accessible.
109 */
110 pci_save_state(dev);
111 return 0;
112}
113#else
114#define triflex_ide_pci_suspend NULL
115#endif
116
a9ab09e2 117static struct pci_driver triflex_pci_driver = {
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118 .name = "TRIFLEX_IDE",
119 .id_table = triflex_pci_tbl,
120 .probe = triflex_init_one,
29d72f2d 121 .remove = ide_pci_remove,
839e7306 122 .suspend = triflex_ide_pci_suspend,
feb22b7f 123 .resume = ide_pci_resume,
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LT
124};
125
82ab1eec 126static int __init triflex_ide_init(void)
1da177e4 127{
a9ab09e2 128 return ide_pci_register_driver(&triflex_pci_driver);
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129}
130
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131static void __exit triflex_ide_exit(void)
132{
a9ab09e2 133 pci_unregister_driver(&triflex_pci_driver);
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134}
135
1da177e4 136module_init(triflex_ide_init);
29d72f2d 137module_exit(triflex_ide_exit);
1da177e4
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138
139MODULE_AUTHOR("Torben Mathiasen");
140MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
141MODULE_LICENSE("GPL");
142
143