linux/drivers/ide/pci/generic.c
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   1/*
   2 *  linux/drivers/ide/pci/generic.c     Version 0.11    December 30, 2002
   3 *
   4 *  Copyright (C) 2001-2002     Andre Hedrick <andre@linux-ide.org>
   5 *  Portions (C) Copyright 2002  Red Hat Inc <alan@redhat.com>
   6 *
   7 * This program is free software; you can redistribute it and/or modify it
   8 * under the terms of the GNU General Public License as published by the
   9 * Free Software Foundation; either version 2, or (at your option) any
  10 * later version.
  11 *
  12 * This program is distributed in the hope that it will be useful, but
  13 * WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 * General Public License for more details.
  16 *
  17 * For the avoidance of doubt the "preferred form" of this code is one which
  18 * is in an open non patent encumbered format. Where cryptographic key signing
  19 * forms part of the process of creating an executable the information
  20 * including keys needed to generate an equivalently functional executable
  21 * are deemed to be part of the source code.
  22 */
  23
  24#include <linux/types.h>
  25#include <linux/module.h>
  26#include <linux/kernel.h>
  27#include <linux/delay.h>
  28#include <linux/timer.h>
  29#include <linux/mm.h>
  30#include <linux/ioport.h>
  31#include <linux/blkdev.h>
  32#include <linux/hdreg.h>
  33#include <linux/pci.h>
  34#include <linux/ide.h>
  35#include <linux/init.h>
  36
  37#include <asm/io.h>
  38
  39static int ide_generic_all;             /* Set to claim all devices */
  40
  41/*
  42 * the module_param_named() was added for the modular case
  43 * the __setup() is left as compatibility for existing setups
  44 */
  45#ifndef MODULE
  46static int __init ide_generic_all_on(char *unused)
  47{
  48        ide_generic_all = 1;
  49        printk(KERN_INFO "IDE generic will claim all unknown PCI IDE storage controllers.\n");
  50        return 1;
  51}
  52const __setup("all-generic-ide", ide_generic_all_on);
  53#endif
  54module_param_named(all_generic_ide, ide_generic_all, bool, 0444);
  55MODULE_PARM_DESC(all_generic_ide, "IDE generic will claim all unknown PCI IDE storage controllers.");
  56
  57#define IDE_HFLAGS_UMC (IDE_HFLAG_NO_DMA | IDE_HFLAG_FORCE_LEGACY_IRQS)
  58
  59#define DECLARE_GENERIC_PCI_DEV(name_str, extra_flags) \
  60        { \
  61                .name           = name_str, \
  62                .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA | \
  63                                  extra_flags | \
  64                                  IDE_HFLAG_BOOTABLE, \
  65                .swdma_mask     = ATA_SWDMA2, \
  66                .mwdma_mask     = ATA_MWDMA2, \
  67                .udma_mask      = ATA_UDMA6, \
  68        }
  69
  70static const struct ide_port_info generic_chipsets[] __devinitdata = {
  71        /*  0 */ DECLARE_GENERIC_PCI_DEV("Unknown",     0),
  72
  73        {       /* 1 */
  74                .name           = "NS87410",
  75                .enablebits     = {{0x43,0x08,0x08}, {0x47,0x08,0x08}},
  76                .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  77                                  IDE_HFLAG_BOOTABLE,
  78                .swdma_mask     = ATA_SWDMA2,
  79                .mwdma_mask     = ATA_MWDMA2,
  80                .udma_mask      = ATA_UDMA6,
  81        },
  82
  83        /*  2 */ DECLARE_GENERIC_PCI_DEV("SAMURAI",     0),
  84        /*  3 */ DECLARE_GENERIC_PCI_DEV("HT6565",      0),
  85        /*  4 */ DECLARE_GENERIC_PCI_DEV("UM8673F",     IDE_HFLAGS_UMC),
  86        /*  5 */ DECLARE_GENERIC_PCI_DEV("UM8886A",     IDE_HFLAGS_UMC),
  87        /*  6 */ DECLARE_GENERIC_PCI_DEV("UM8886BF",    IDE_HFLAGS_UMC),
  88        /*  7 */ DECLARE_GENERIC_PCI_DEV("HINT_IDE",    0),
  89        /*  8 */ DECLARE_GENERIC_PCI_DEV("VIA_IDE",     IDE_HFLAG_NO_AUTODMA),
  90        /*  9 */ DECLARE_GENERIC_PCI_DEV("OPTI621V",    IDE_HFLAG_NO_AUTODMA),
  91
  92        {       /* 10 */
  93                .name           = "VIA8237SATA",
  94                .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  95                                  IDE_HFLAG_OFF_BOARD,
  96                .swdma_mask     = ATA_SWDMA2,
  97                .mwdma_mask     = ATA_MWDMA2,
  98                .udma_mask      = ATA_UDMA6,
  99        },
 100
 101        /* 11 */ DECLARE_GENERIC_PCI_DEV("Piccolo0102", IDE_HFLAG_NO_AUTODMA),
 102        /* 12 */ DECLARE_GENERIC_PCI_DEV("Piccolo0103", IDE_HFLAG_NO_AUTODMA),
 103        /* 13 */ DECLARE_GENERIC_PCI_DEV("Piccolo0105", IDE_HFLAG_NO_AUTODMA),
 104
 105        {       /* 14 */
 106                .name           = "Revolution",
 107                .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
 108                                  IDE_HFLAG_OFF_BOARD,
 109                .swdma_mask     = ATA_SWDMA2,
 110                .mwdma_mask     = ATA_MWDMA2,
 111                .udma_mask      = ATA_UDMA6,
 112        }
 113};
 114
 115/**
 116 *      generic_init_one        -       called when a PIIX is found
 117 *      @dev: the generic device
 118 *      @id: the matching pci id
 119 *
 120 *      Called when the PCI registration layer (or the IDE initialization)
 121 *      finds a device matching our IDE device tables.
 122 */
 123 
 124static int __devinit generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 125{
 126        const struct ide_port_info *d = &generic_chipsets[id->driver_data];
 127        int ret = -ENODEV;
 128
 129        /* Don't use the generic entry unless instructed to do so */
 130        if (id->driver_data == 0 && ide_generic_all == 0)
 131                        goto out;
 132
 133        switch (dev->vendor) {
 134        case PCI_VENDOR_ID_UMC:
 135                if (dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
 136                                !(PCI_FUNC(dev->devfn) & 1))
 137                        goto out; /* UM8886A/BF pair */
 138                break;
 139        case PCI_VENDOR_ID_OPTI:
 140                if (dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
 141                                !(PCI_FUNC(dev->devfn) & 1))
 142                        goto out;
 143                break;
 144        case PCI_VENDOR_ID_JMICRON:
 145                if (dev->device != PCI_DEVICE_ID_JMICRON_JMB368 &&
 146                                PCI_FUNC(dev->devfn) != 1)
 147                        goto out;
 148                break;
 149        case PCI_VENDOR_ID_NS:
 150                if (dev->device == PCI_DEVICE_ID_NS_87410 &&
 151                                (dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
 152                        goto out;
 153                break;
 154        }
 155
 156        if (dev->vendor != PCI_VENDOR_ID_JMICRON) {
 157                u16 command;
 158                pci_read_config_word(dev, PCI_COMMAND, &command);
 159                if (!(command & PCI_COMMAND_IO)) {
 160                        printk(KERN_INFO "Skipping disabled %s IDE "
 161                                        "controller.\n", d->name);
 162                        goto out;
 163                }
 164        }
 165        ret = ide_setup_pci_device(dev, d);
 166out:
 167        return ret;
 168}
 169
 170static const struct pci_device_id generic_pci_tbl[] = {
 171        { PCI_VDEVICE(NS,       PCI_DEVICE_ID_NS_87410),                 1 },
 172        { PCI_VDEVICE(PCTECH,   PCI_DEVICE_ID_PCTECH_SAMURAI_IDE),       2 },
 173        { PCI_VDEVICE(HOLTEK,   PCI_DEVICE_ID_HOLTEK_6565),              3 },
 174        { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8673F),              4 },
 175        { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886A),              5 },
 176        { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886BF),             6 },
 177        { PCI_VDEVICE(HINT,     PCI_DEVICE_ID_HINT_VXPROII_IDE),         7 },
 178        { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_82C561),               8 },
 179        { PCI_VDEVICE(OPTI,     PCI_DEVICE_ID_OPTI_82C558),              9 },
 180#ifdef CONFIG_BLK_DEV_IDE_SATA
 181        { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_8237_SATA),           10 },
 182#endif
 183        { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO),         11 },
 184        { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_1),       12 },
 185        { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),       13 },
 186        { PCI_VDEVICE(NETCELL,  PCI_DEVICE_ID_REVOLUTION),              14 },
 187        /*
 188         * Must come last.  If you add entries adjust
 189         * this table and generic_chipsets[] appropriately.
 190         */
 191        { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 0 },
 192        { 0, },
 193};
 194MODULE_DEVICE_TABLE(pci, generic_pci_tbl);
 195
 196static struct pci_driver driver = {
 197        .name           = "PCI_IDE",
 198        .id_table       = generic_pci_tbl,
 199        .probe          = generic_init_one,
 200};
 201
 202static int __init generic_ide_init(void)
 203{
 204        return ide_pci_register_driver(&driver);
 205}
 206
 207module_init(generic_ide_init);
 208
 209MODULE_AUTHOR("Andre Hedrick");
 210MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
 211MODULE_LICENSE("GPL");
 212
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