projects / deliverable / linux.git / blame
| 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 | ||
| 82ab1eec | 80 | static int __init rz1000_ide_init(void) |
| 1da177e4 LT |
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 |