]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/drivers/ide/pci/rz1000.c Version 0.06 January 12, 2003 | |
3 | * | |
4 | * Copyright (C) 1995-1998 Linus Torvalds & author (see below) | |
5 | */ | |
6 | ||
7 | /* | |
8 | * Principal Author: mlord@pobox.com (Mark Lord) | |
9 | * | |
10 | * See linux/MAINTAINERS for address of current maintainer. | |
11 | * | |
12 | * This file provides support for disabling the buggy read-ahead | |
13 | * mode of the RZ1000 IDE chipset, commonly used on Intel motherboards. | |
14 | * | |
15 | * Dunno if this fixes both ports, or only the primary port (?). | |
16 | */ | |
17 | ||
18 | #undef REALLY_SLOW_IO /* most systems can safely undef this */ | |
19 | ||
1da177e4 LT |
20 | #include <linux/types.h> |
21 | #include <linux/module.h> | |
22 | #include <linux/kernel.h> | |
23 | #include <linux/delay.h> | |
24 | #include <linux/timer.h> | |
25 | #include <linux/mm.h> | |
26 | #include <linux/ioport.h> | |
27 | #include <linux/blkdev.h> | |
28 | #include <linux/hdreg.h> | |
29 | #include <linux/pci.h> | |
30 | #include <linux/ide.h> | |
31 | #include <linux/init.h> | |
32 | ||
33 | #include <asm/io.h> | |
34 | ||
35 | static void __devinit init_hwif_rz1000 (ide_hwif_t *hwif) | |
36 | { | |
37 | u16 reg; | |
38 | struct pci_dev *dev = hwif->pci_dev; | |
39 | ||
40 | hwif->chipset = ide_rz1000; | |
41 | if (!pci_read_config_word (dev, 0x40, ®) && | |
42 | !pci_write_config_word(dev, 0x40, reg & 0xdfff)) { | |
43 | printk(KERN_INFO "%s: disabled chipset read-ahead " | |
44 | "(buggy RZ1000/RZ1001)\n", hwif->name); | |
45 | } else { | |
46 | hwif->serialized = 1; | |
47 | hwif->drives[0].no_unmask = 1; | |
48 | hwif->drives[1].no_unmask = 1; | |
49 | printk(KERN_INFO "%s: serialized, disabled unmasking " | |
50 | "(buggy RZ1000/RZ1001)\n", hwif->name); | |
51 | } | |
52 | } | |
53 | ||
54 | static ide_pci_device_t rz1000_chipset __devinitdata = { | |
55 | .name = "RZ100x", | |
56 | .init_hwif = init_hwif_rz1000, | |
57 | .channels = 2, | |
58 | .autodma = NODMA, | |
59 | .bootable = ON_BOARD, | |
60 | }; | |
61 | ||
62 | static int __devinit rz1000_init_one(struct pci_dev *dev, const struct pci_device_id *id) | |
63 | { | |
64 | return ide_setup_pci_device(dev, &rz1000_chipset); | |
65 | } | |
66 | ||
67 | static struct pci_device_id rz1000_pci_tbl[] = { | |
68 | { PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_RZ1000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
69 | { PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_RZ1001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
70 | { 0, }, | |
71 | }; | |
72 | MODULE_DEVICE_TABLE(pci, rz1000_pci_tbl); | |
73 | ||
74 | static struct pci_driver driver = { | |
75 | .name = "RZ1000_IDE", | |
76 | .id_table = rz1000_pci_tbl, | |
77 | .probe = rz1000_init_one, | |
78 | }; | |
79 | ||
80 | static int rz1000_ide_init(void) | |
81 | { | |
82 | return ide_pci_register_driver(&driver); | |
83 | } | |
84 | ||
85 | module_init(rz1000_ide_init); | |
86 | ||
87 | MODULE_AUTHOR("Andre Hedrick"); | |
88 | MODULE_DESCRIPTION("PCI driver module for RZ1000 IDE"); | |
89 | MODULE_LICENSE("GPL"); | |
90 |