summaryrefslogtreecommitdiff
path: root/drivers/ide/pci/triflex.c
blob: 68e1e9adf84dbb9595cc5845a51daefbdc2a4873 (plain)
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
144
145
146
147
148
149
/*
 * triflex.c
 * 
 * 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>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 * Loosely based on the piix & svwks drivers.
 *
 * Documentation:
 *	Not publically available.
 */

#include <linux/types.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/ioport.h>
#include <linux/blkdev.h>
#include <linux/hdreg.h>
#include <linux/pci.h>
#include <linux/ide.h>
#include <linux/init.h>

static void triflex_set_mode(ide_drive_t *drive, const u8 speed)
{
	ide_hwif_t *hwif = HWIF(drive);
	struct pci_dev *dev = hwif->pci_dev;
	u8 channel_offset = hwif->channel ? 0x74 : 0x70;
	u16 timing = 0;
	u32 triflex_timings = 0;
	u8 unit = (drive->select.b.unit & 0x01);
	
	pci_read_config_dword(dev, channel_offset, &triflex_timings);
	
	switch(speed) {
		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;
		default:
			return;
	}

	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_drive_t *drive, const u8 pio)
{
	triflex_set_mode(drive, XFER_PIO_0 + pio);
}

static void __devinit init_hwif_triflex(ide_hwif_t *hwif)
{
	hwif->set_pio_mode = &triflex_set_pio_mode;
	hwif->set_dma_mode = &triflex_set_mode;

	if (hwif->dma_base == 0)
		return;

	hwif->mwdma_mask = 0x07;
	hwif->swdma_mask = 0x07;
}

static ide_pci_device_t triflex_device __devinitdata = {
	.name		= "TRIFLEX",
	.init_hwif	= init_hwif_triflex,
	.autodma	= AUTODMA,
	.enablebits	= {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
	.bootable	= ON_BOARD,
	.pio_mask	= ATA_PIO4,
};

static int __devinit triflex_init_one(struct pci_dev *dev, 
		const struct pci_device_id *id)
{
	return ide_setup_pci_device(dev, &triflex_device);
}

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);

static struct pci_driver driver = {
	.name		= "TRIFLEX_IDE",
	.id_table	= triflex_pci_tbl,
	.probe		= triflex_init_one,
};

static int __init triflex_ide_init(void)
{
	return ide_pci_register_driver(&driver);
}

module_init(triflex_ide_init);

MODULE_AUTHOR("Torben Mathiasen");
MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
MODULE_LICENSE("GPL");