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/drivers/ide/pci/rz1000.c

https://bitbucket.org/evzijst/gittest
C | 91 lines | 62 code | 14 blank | 15 comment | 2 complexity | 3209543f799c9bdc8b7bad59862360e2 MD5 | raw file
 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
20#include <linux/config.h> /* for CONFIG_BLK_DEV_IDEPCI */
21#include <linux/types.h>
22#include <linux/module.h>
23#include <linux/kernel.h>
24#include <linux/delay.h>
25#include <linux/timer.h>
26#include <linux/mm.h>
27#include <linux/ioport.h>
28#include <linux/blkdev.h>
29#include <linux/hdreg.h>
30#include <linux/pci.h>
31#include <linux/ide.h>
32#include <linux/init.h>
33
34#include <asm/io.h>
35
36static void __devinit init_hwif_rz1000 (ide_hwif_t *hwif)
37{
38	u16 reg;
39	struct pci_dev *dev = hwif->pci_dev;
40
41	hwif->chipset = ide_rz1000;
42	if (!pci_read_config_word (dev, 0x40, &reg) &&
43	    !pci_write_config_word(dev, 0x40, reg & 0xdfff)) {
44		printk(KERN_INFO "%s: disabled chipset read-ahead "
45			"(buggy RZ1000/RZ1001)\n", hwif->name);
46	} else {
47		hwif->serialized = 1;
48		hwif->drives[0].no_unmask = 1;
49		hwif->drives[1].no_unmask = 1;
50		printk(KERN_INFO "%s: serialized, disabled unmasking "
51			"(buggy RZ1000/RZ1001)\n", hwif->name);
52	}
53}
54
55static ide_pci_device_t rz1000_chipset __devinitdata = {
56	.name		= "RZ100x",
57	.init_hwif	= init_hwif_rz1000,
58	.channels	= 2,
59	.autodma	= NODMA,
60	.bootable	= ON_BOARD,
61};
62
63static int __devinit rz1000_init_one(struct pci_dev *dev, const struct pci_device_id *id)
64{
65	return ide_setup_pci_device(dev, &rz1000_chipset);
66}
67
68static struct pci_device_id rz1000_pci_tbl[] = {
69	{ PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_RZ1000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
70	{ PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_RZ1001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
71	{ 0, },
72};
73MODULE_DEVICE_TABLE(pci, rz1000_pci_tbl);
74
75static struct pci_driver driver = {
76	.name		= "RZ1000_IDE",
77	.id_table	= rz1000_pci_tbl,
78	.probe		= rz1000_init_one,
79};
80
81static int rz1000_ide_init(void)
82{
83	return ide_pci_register_driver(&driver);
84}
85
86module_init(rz1000_ide_init);
87
88MODULE_AUTHOR("Andre Hedrick");
89MODULE_DESCRIPTION("PCI driver module for RZ1000 IDE");
90MODULE_LICENSE("GPL");
91