1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * IDE Chipset driver for the Compaq TriFlex IDE controller.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Known to work with the Compaq Workstation 5x00 series.
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Copyright (C) 2002 Hewlett-Packard Development Group, L.P.
8*4882a593Smuzhiyun * Author: Torben Mathiasen <torben.mathiasen@hp.com>
9*4882a593Smuzhiyun *
10*4882a593Smuzhiyun * Loosely based on the piix & svwks drivers.
11*4882a593Smuzhiyun *
12*4882a593Smuzhiyun * Documentation:
13*4882a593Smuzhiyun * Not publicly available.
14*4882a593Smuzhiyun */
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun #include <linux/types.h>
17*4882a593Smuzhiyun #include <linux/module.h>
18*4882a593Smuzhiyun #include <linux/kernel.h>
19*4882a593Smuzhiyun #include <linux/pci.h>
20*4882a593Smuzhiyun #include <linux/ide.h>
21*4882a593Smuzhiyun #include <linux/init.h>
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun #define DRV_NAME "triflex"
24*4882a593Smuzhiyun
triflex_set_mode(ide_hwif_t * hwif,ide_drive_t * drive)25*4882a593Smuzhiyun static void triflex_set_mode(ide_hwif_t *hwif, ide_drive_t *drive)
26*4882a593Smuzhiyun {
27*4882a593Smuzhiyun struct pci_dev *dev = to_pci_dev(hwif->dev);
28*4882a593Smuzhiyun u32 triflex_timings = 0;
29*4882a593Smuzhiyun u16 timing = 0;
30*4882a593Smuzhiyun u8 channel_offset = hwif->channel ? 0x74 : 0x70, unit = drive->dn & 1;
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun pci_read_config_dword(dev, channel_offset, &triflex_timings);
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun switch (drive->dma_mode) {
35*4882a593Smuzhiyun case XFER_MW_DMA_2:
36*4882a593Smuzhiyun timing = 0x0103;
37*4882a593Smuzhiyun break;
38*4882a593Smuzhiyun case XFER_MW_DMA_1:
39*4882a593Smuzhiyun timing = 0x0203;
40*4882a593Smuzhiyun break;
41*4882a593Smuzhiyun case XFER_MW_DMA_0:
42*4882a593Smuzhiyun timing = 0x0808;
43*4882a593Smuzhiyun break;
44*4882a593Smuzhiyun case XFER_SW_DMA_2:
45*4882a593Smuzhiyun case XFER_SW_DMA_1:
46*4882a593Smuzhiyun case XFER_SW_DMA_0:
47*4882a593Smuzhiyun timing = 0x0f0f;
48*4882a593Smuzhiyun break;
49*4882a593Smuzhiyun case XFER_PIO_4:
50*4882a593Smuzhiyun timing = 0x0202;
51*4882a593Smuzhiyun break;
52*4882a593Smuzhiyun case XFER_PIO_3:
53*4882a593Smuzhiyun timing = 0x0204;
54*4882a593Smuzhiyun break;
55*4882a593Smuzhiyun case XFER_PIO_2:
56*4882a593Smuzhiyun timing = 0x0404;
57*4882a593Smuzhiyun break;
58*4882a593Smuzhiyun case XFER_PIO_1:
59*4882a593Smuzhiyun timing = 0x0508;
60*4882a593Smuzhiyun break;
61*4882a593Smuzhiyun case XFER_PIO_0:
62*4882a593Smuzhiyun timing = 0x0808;
63*4882a593Smuzhiyun break;
64*4882a593Smuzhiyun }
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun triflex_timings &= ~(0xFFFF << (16 * unit));
67*4882a593Smuzhiyun triflex_timings |= (timing << (16 * unit));
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun pci_write_config_dword(dev, channel_offset, triflex_timings);
70*4882a593Smuzhiyun }
71*4882a593Smuzhiyun
triflex_set_pio_mode(ide_hwif_t * hwif,ide_drive_t * drive)72*4882a593Smuzhiyun static void triflex_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
73*4882a593Smuzhiyun {
74*4882a593Smuzhiyun drive->dma_mode = drive->pio_mode;
75*4882a593Smuzhiyun triflex_set_mode(hwif, drive);
76*4882a593Smuzhiyun }
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun static const struct ide_port_ops triflex_port_ops = {
79*4882a593Smuzhiyun .set_pio_mode = triflex_set_pio_mode,
80*4882a593Smuzhiyun .set_dma_mode = triflex_set_mode,
81*4882a593Smuzhiyun };
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun static const struct ide_port_info triflex_device = {
84*4882a593Smuzhiyun .name = DRV_NAME,
85*4882a593Smuzhiyun .enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
86*4882a593Smuzhiyun .port_ops = &triflex_port_ops,
87*4882a593Smuzhiyun .pio_mask = ATA_PIO4,
88*4882a593Smuzhiyun .swdma_mask = ATA_SWDMA2,
89*4882a593Smuzhiyun .mwdma_mask = ATA_MWDMA2,
90*4882a593Smuzhiyun };
91*4882a593Smuzhiyun
triflex_init_one(struct pci_dev * dev,const struct pci_device_id * id)92*4882a593Smuzhiyun static int triflex_init_one(struct pci_dev *dev, const struct pci_device_id *id)
93*4882a593Smuzhiyun {
94*4882a593Smuzhiyun return ide_pci_init_one(dev, &triflex_device, NULL);
95*4882a593Smuzhiyun }
96*4882a593Smuzhiyun
97*4882a593Smuzhiyun static const struct pci_device_id triflex_pci_tbl[] = {
98*4882a593Smuzhiyun { PCI_VDEVICE(COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE), 0 },
99*4882a593Smuzhiyun { 0, },
100*4882a593Smuzhiyun };
101*4882a593Smuzhiyun MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);
102*4882a593Smuzhiyun
103*4882a593Smuzhiyun #ifdef CONFIG_PM
triflex_ide_pci_suspend(struct pci_dev * dev,pm_message_t state)104*4882a593Smuzhiyun static int triflex_ide_pci_suspend(struct pci_dev *dev, pm_message_t state)
105*4882a593Smuzhiyun {
106*4882a593Smuzhiyun /*
107*4882a593Smuzhiyun * We must not disable or powerdown the device.
108*4882a593Smuzhiyun * APM bios refuses to suspend if IDE is not accessible.
109*4882a593Smuzhiyun */
110*4882a593Smuzhiyun pci_save_state(dev);
111*4882a593Smuzhiyun return 0;
112*4882a593Smuzhiyun }
113*4882a593Smuzhiyun #else
114*4882a593Smuzhiyun #define triflex_ide_pci_suspend NULL
115*4882a593Smuzhiyun #endif
116*4882a593Smuzhiyun
117*4882a593Smuzhiyun static struct pci_driver triflex_pci_driver = {
118*4882a593Smuzhiyun .name = "TRIFLEX_IDE",
119*4882a593Smuzhiyun .id_table = triflex_pci_tbl,
120*4882a593Smuzhiyun .probe = triflex_init_one,
121*4882a593Smuzhiyun .remove = ide_pci_remove,
122*4882a593Smuzhiyun .suspend = triflex_ide_pci_suspend,
123*4882a593Smuzhiyun .resume = ide_pci_resume,
124*4882a593Smuzhiyun };
125*4882a593Smuzhiyun
triflex_ide_init(void)126*4882a593Smuzhiyun static int __init triflex_ide_init(void)
127*4882a593Smuzhiyun {
128*4882a593Smuzhiyun return ide_pci_register_driver(&triflex_pci_driver);
129*4882a593Smuzhiyun }
130*4882a593Smuzhiyun
triflex_ide_exit(void)131*4882a593Smuzhiyun static void __exit triflex_ide_exit(void)
132*4882a593Smuzhiyun {
133*4882a593Smuzhiyun pci_unregister_driver(&triflex_pci_driver);
134*4882a593Smuzhiyun }
135*4882a593Smuzhiyun
136*4882a593Smuzhiyun module_init(triflex_ide_init);
137*4882a593Smuzhiyun module_exit(triflex_ide_exit);
138*4882a593Smuzhiyun
139*4882a593Smuzhiyun MODULE_AUTHOR("Torben Mathiasen");
140*4882a593Smuzhiyun MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
141*4882a593Smuzhiyun MODULE_LICENSE("GPL");
142*4882a593Smuzhiyun
143*4882a593Smuzhiyun
144