| /* |
| * linux/drivers/ide/pci/rz1000.c Version 0.06 January 12, 2003 |
| * |
| * Copyright (C) 1995-1998 Linus Torvalds & author (see below) |
| */ |
| |
| /* |
| * Principal Author: mlord@pobox.com (Mark Lord) |
| * |
| * See linux/MAINTAINERS for address of current maintainer. |
| * |
| * This file provides support for disabling the buggy read-ahead |
| * mode of the RZ1000 IDE chipset, commonly used on Intel motherboards. |
| * |
| * Dunno if this fixes both ports, or only the primary port (?). |
| */ |
| |
| #undef REALLY_SLOW_IO /* most systems can safely undef this */ |
| |
| #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> |
| |
| #include <asm/io.h> |
| |
| static void __devinit init_hwif_rz1000 (ide_hwif_t *hwif) |
| { |
| u16 reg; |
| struct pci_dev *dev = hwif->pci_dev; |
| |
| hwif->chipset = ide_rz1000; |
| if (!pci_read_config_word (dev, 0x40, ®) && |
| !pci_write_config_word(dev, 0x40, reg & 0xdfff)) { |
| printk(KERN_INFO "%s: disabled chipset read-ahead " |
| "(buggy RZ1000/RZ1001)\n", hwif->name); |
| } else { |
| hwif->serialized = 1; |
| hwif->drives[0].no_unmask = 1; |
| hwif->drives[1].no_unmask = 1; |
| printk(KERN_INFO "%s: serialized, disabled unmasking " |
| "(buggy RZ1000/RZ1001)\n", hwif->name); |
| } |
| } |
| |
| static ide_pci_device_t rz1000_chipset __devinitdata = { |
| .name = "RZ100x", |
| .init_hwif = init_hwif_rz1000, |
| .channels = 2, |
| .autodma = NODMA, |
| .bootable = ON_BOARD, |
| }; |
| |
| static int __devinit rz1000_init_one(struct pci_dev *dev, const struct pci_device_id *id) |
| { |
| return ide_setup_pci_device(dev, &rz1000_chipset); |
| } |
| |
| static struct pci_device_id rz1000_pci_tbl[] = { |
| { PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_RZ1000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
| { PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_RZ1001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
| { 0, }, |
| }; |
| MODULE_DEVICE_TABLE(pci, rz1000_pci_tbl); |
| |
| static struct pci_driver driver = { |
| .name = "RZ1000_IDE", |
| .id_table = rz1000_pci_tbl, |
| .probe = rz1000_init_one, |
| }; |
| |
| static int rz1000_ide_init(void) |
| { |
| return ide_pci_register_driver(&driver); |
| } |
| |
| module_init(rz1000_ide_init); |
| |
| MODULE_AUTHOR("Andre Hedrick"); |
| MODULE_DESCRIPTION("PCI driver module for RZ1000 IDE"); |
| MODULE_LICENSE("GPL"); |
| |