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1da177e4 LT |
1 | /* |
2 | * triflex.c | |
3 | * | |
4 | * IDE Chipset driver for the Compaq TriFlex IDE controller. | |
5 | * | |
6 | * Known to work with the Compaq Workstation 5x00 series. | |
7 | * | |
8 | * Copyright (C) 2002 Hewlett-Packard Development Group, L.P. | |
9 | * Author: Torben Mathiasen <torben.mathiasen@hp.com> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License version 2 as | |
13 | * published by the Free Software Foundation. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | * | |
24 | * Loosely based on the piix & svwks drivers. | |
25 | * | |
26 | * Documentation: | |
27 | * Not publically available. | |
28 | */ | |
29 | ||
1da177e4 LT |
30 | #include <linux/types.h> |
31 | #include <linux/module.h> | |
32 | #include <linux/kernel.h> | |
33 | #include <linux/delay.h> | |
34 | #include <linux/timer.h> | |
35 | #include <linux/mm.h> | |
36 | #include <linux/ioport.h> | |
37 | #include <linux/blkdev.h> | |
38 | #include <linux/hdreg.h> | |
39 | #include <linux/pci.h> | |
40 | #include <linux/ide.h> | |
41 | #include <linux/init.h> | |
42 | ||
43 | static int triflex_tune_chipset(ide_drive_t *drive, u8 xferspeed) | |
44 | { | |
45 | ide_hwif_t *hwif = HWIF(drive); | |
46 | struct pci_dev *dev = hwif->pci_dev; | |
47 | u8 channel_offset = hwif->channel ? 0x74 : 0x70; | |
48 | u16 timing = 0; | |
49 | u32 triflex_timings = 0; | |
50 | u8 unit = (drive->select.b.unit & 0x01); | |
51 | u8 speed = ide_rate_filter(0, xferspeed); | |
52 | ||
53 | pci_read_config_dword(dev, channel_offset, &triflex_timings); | |
54 | ||
55 | switch(speed) { | |
56 | case XFER_MW_DMA_2: | |
57 | timing = 0x0103; | |
58 | break; | |
59 | case XFER_MW_DMA_1: | |
60 | timing = 0x0203; | |
61 | break; | |
62 | case XFER_MW_DMA_0: | |
63 | timing = 0x0808; | |
64 | break; | |
65 | case XFER_SW_DMA_2: | |
66 | case XFER_SW_DMA_1: | |
67 | case XFER_SW_DMA_0: | |
68 | timing = 0x0f0f; | |
69 | break; | |
70 | case XFER_PIO_4: | |
71 | timing = 0x0202; | |
72 | break; | |
73 | case XFER_PIO_3: | |
74 | timing = 0x0204; | |
75 | break; | |
76 | case XFER_PIO_2: | |
77 | timing = 0x0404; | |
78 | break; | |
79 | case XFER_PIO_1: | |
80 | timing = 0x0508; | |
81 | break; | |
82 | case XFER_PIO_0: | |
83 | timing = 0x0808; | |
84 | break; | |
85 | default: | |
86 | return -1; | |
87 | } | |
88 | ||
89 | triflex_timings &= ~(0xFFFF << (16 * unit)); | |
90 | triflex_timings |= (timing << (16 * unit)); | |
91 | ||
92 | pci_write_config_dword(dev, channel_offset, triflex_timings); | |
93 | ||
94 | return (ide_config_drive_speed(drive, speed)); | |
95 | } | |
96 | ||
97 | static void triflex_tune_drive(ide_drive_t *drive, u8 pio) | |
98 | { | |
99 | int use_pio = ide_get_best_pio_mode(drive, pio, 4, NULL); | |
100 | (void) triflex_tune_chipset(drive, (XFER_PIO_0 + use_pio)); | |
101 | } | |
102 | ||
103 | static int triflex_config_drive_for_dma(ide_drive_t *drive) | |
104 | { | |
105 | int speed = ide_dma_speed(drive, 0); /* No ultra speeds */ | |
106 | ||
107 | if (!speed) { | |
108 | u8 pspeed = ide_get_best_pio_mode(drive, 255, 4, NULL); | |
109 | speed = XFER_PIO_0 + pspeed; | |
110 | } | |
111 | ||
112 | (void) triflex_tune_chipset(drive, speed); | |
113 | return ide_dma_enable(drive); | |
114 | } | |
115 | ||
116 | static int triflex_config_drive_xfer_rate(ide_drive_t *drive) | |
117 | { | |
118 | ide_hwif_t *hwif = HWIF(drive); | |
119 | struct hd_driveid *id = drive->id; | |
120 | ||
121 | if ((id->capability & 1) && drive->autodma) { | |
122 | if (ide_use_dma(drive)) { | |
123 | if (triflex_config_drive_for_dma(drive)) | |
124 | return hwif->ide_dma_on(drive); | |
125 | } | |
126 | } | |
127 | ||
128 | hwif->tuneproc(drive, 255); | |
129 | return hwif->ide_dma_off_quietly(drive); | |
130 | } | |
131 | ||
d6904ab6 | 132 | static void __devinit init_hwif_triflex(ide_hwif_t *hwif) |
1da177e4 LT |
133 | { |
134 | hwif->tuneproc = &triflex_tune_drive; | |
135 | hwif->speedproc = &triflex_tune_chipset; | |
136 | ||
137 | hwif->atapi_dma = 1; | |
138 | hwif->mwdma_mask = 0x07; | |
139 | hwif->swdma_mask = 0x07; | |
140 | hwif->ide_dma_check = &triflex_config_drive_xfer_rate; | |
141 | ||
142 | if (!noautodma) | |
143 | hwif->autodma = 1; | |
144 | hwif->drives[0].autodma = hwif->autodma; | |
145 | hwif->drives[1].autodma = hwif->autodma; | |
146 | } | |
147 | ||
148 | static ide_pci_device_t triflex_device __devinitdata = { | |
149 | .name = "TRIFLEX", | |
150 | .init_hwif = init_hwif_triflex, | |
151 | .channels = 2, | |
152 | .autodma = AUTODMA, | |
153 | .enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}}, | |
154 | .bootable = ON_BOARD, | |
155 | }; | |
156 | ||
157 | static int __devinit triflex_init_one(struct pci_dev *dev, | |
158 | const struct pci_device_id *id) | |
159 | { | |
160 | return ide_setup_pci_device(dev, &triflex_device); | |
161 | } | |
162 | ||
163 | static struct pci_device_id triflex_pci_tbl[] = { | |
164 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE, | |
165 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
166 | { 0, }, | |
167 | }; | |
168 | MODULE_DEVICE_TABLE(pci, triflex_pci_tbl); | |
169 | ||
170 | static struct pci_driver driver = { | |
171 | .name = "TRIFLEX_IDE", | |
172 | .id_table = triflex_pci_tbl, | |
173 | .probe = triflex_init_one, | |
174 | }; | |
175 | ||
176 | static int triflex_ide_init(void) | |
177 | { | |
178 | return ide_pci_register_driver(&driver); | |
179 | } | |
180 | ||
181 | module_init(triflex_ide_init); | |
182 | ||
183 | MODULE_AUTHOR("Torben Mathiasen"); | |
184 | MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE"); | |
185 | MODULE_LICENSE("GPL"); | |
186 | ||
187 |