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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 LT |
9 | * |
10 | * Loosely based on the piix & svwks drivers. | |
11 | * | |
12 | * Documentation: | |
25985edc | 13 | * Not publicly available. |
1da177e4 LT |
14 | */ |
15 | ||
1da177e4 LT |
16 | #include <linux/types.h> |
17 | #include <linux/module.h> | |
18 | #include <linux/kernel.h> | |
1da177e4 LT |
19 | #include <linux/pci.h> |
20 | #include <linux/ide.h> | |
21 | #include <linux/init.h> | |
22 | ||
ced3ec8a BZ |
23 | #define DRV_NAME "triflex" |
24 | ||
8776168c | 25 | static 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; |
123995b9 BZ |
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; | |
1da177e4 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); | |
1da177e4 LT |
70 | } |
71 | ||
e085b3ca | 72 | static void triflex_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive) |
1da177e4 | 73 | { |
8776168c BZ |
74 | drive->dma_mode = drive->pio_mode; |
75 | triflex_set_mode(hwif, drive); | |
1da177e4 LT |
76 | } |
77 | ||
ac95beed BZ |
78 | static 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 | 83 | static 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, |
5f8b6c34 BZ |
88 | .swdma_mask = ATA_SWDMA2, |
89 | .mwdma_mask = ATA_MWDMA2, | |
1da177e4 LT |
90 | }; |
91 | ||
fe31edc8 | 92 | static 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); |
1da177e4 LT |
95 | } |
96 | ||
9cbcc5e3 BZ |
97 | static const struct pci_device_id triflex_pci_tbl[] = { |
98 | { PCI_VDEVICE(COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE), 0 }, | |
1da177e4 LT |
99 | { 0, }, |
100 | }; | |
101 | MODULE_DEVICE_TABLE(pci, triflex_pci_tbl); | |
102 | ||
839e7306 MP |
103 | #ifdef CONFIG_PM |
104 | static 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 | 117 | static struct pci_driver triflex_pci_driver = { |
1da177e4 LT |
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, |
1da177e4 LT |
124 | }; |
125 | ||
82ab1eec | 126 | static int __init triflex_ide_init(void) |
1da177e4 | 127 | { |
a9ab09e2 | 128 | return ide_pci_register_driver(&triflex_pci_driver); |
1da177e4 LT |
129 | } |
130 | ||
29d72f2d BZ |
131 | static void __exit triflex_ide_exit(void) |
132 | { | |
a9ab09e2 | 133 | pci_unregister_driver(&triflex_pci_driver); |
29d72f2d BZ |
134 | } |
135 | ||
1da177e4 | 136 | module_init(triflex_ide_init); |
29d72f2d | 137 | module_exit(triflex_ide_exit); |
1da177e4 LT |
138 | |
139 | MODULE_AUTHOR("Torben Mathiasen"); | |
140 | MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE"); | |
141 | MODULE_LICENSE("GPL"); | |
142 | ||
143 |