/* * 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 (?). */ #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 __init 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");