linux/drivers/ide/ide-pci-generic.c
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   1/*
   2 *  Copyright (C) 2001-2002     Andre Hedrick <andre@linux-ide.org>
   3 *  Portions (C) Copyright 2002  Red Hat Inc
   4 *
   5 * This program is free software; you can redistribute it and/or modify it
   6 * under the terms of the GNU General Public License as published by the
   7 * Free Software Foundation; either version 2, or (at your option) any
   8 * later version.
   9 *
  10 * This program is distributed in the hope that it will be useful, but
  11 * WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 * General Public License for more details.
  14 *
  15 * For the avoidance of doubt the "preferred form" of this code is one which
  16 * is in an open non patent encumbered format. Where cryptographic key signing
  17 * forms part of the process of creating an executable the information
  18 * including keys needed to generate an equivalently functional executable
  19 * are deemed to be part of the source code.
  20 */
  21
  22#include <linux/types.h>
  23#include <linux/module.h>
  24#include <linux/kernel.h>
  25#include <linux/pci.h>
  26#include <linux/ide.h>
  27#include <linux/init.h>
  28
  29#define DRV_NAME "ide_pci_generic"
  30
  31static bool ide_generic_all;            /* Set to claim all devices */
  32
  33module_param_named(all_generic_ide, ide_generic_all, bool, 0444);
  34MODULE_PARM_DESC(all_generic_ide, "IDE generic will claim all unknown PCI IDE storage controllers.");
  35
  36static void netcell_quirkproc(ide_drive_t *drive)
  37{
  38        /* mark words 85-87 as valid */
  39        drive->id[ATA_ID_CSF_DEFAULT] |= 0x4000;
  40}
  41
  42static const struct ide_port_ops netcell_port_ops = {
  43        .quirkproc              = netcell_quirkproc,
  44};
  45
  46#define DECLARE_GENERIC_PCI_DEV(extra_flags) \
  47        { \
  48                .name           = DRV_NAME, \
  49                .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA | \
  50                                  extra_flags, \
  51                .swdma_mask     = ATA_SWDMA2, \
  52                .mwdma_mask     = ATA_MWDMA2, \
  53                .udma_mask      = ATA_UDMA6, \
  54        }
  55
  56static const struct ide_port_info generic_chipsets[] = {
  57        /*  0: Unknown */
  58        DECLARE_GENERIC_PCI_DEV(0),
  59
  60        {       /* 1: NS87410 */
  61                .name           = DRV_NAME,
  62                .enablebits     = { {0x43, 0x08, 0x08}, {0x47, 0x08, 0x08} },
  63                .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
  64                .swdma_mask     = ATA_SWDMA2,
  65                .mwdma_mask     = ATA_MWDMA2,
  66                .udma_mask      = ATA_UDMA6,
  67        },
  68
  69        /*  2: SAMURAI / HT6565 / HINT_IDE */
  70        DECLARE_GENERIC_PCI_DEV(0),
  71        /*  3: UM8673F / UM8886A / UM8886BF */
  72        DECLARE_GENERIC_PCI_DEV(IDE_HFLAG_NO_DMA),
  73        /*  4: VIA_IDE / OPTI621V / Piccolo010{2,3,5} */
  74        DECLARE_GENERIC_PCI_DEV(IDE_HFLAG_NO_AUTODMA),
  75
  76        {       /* 5: VIA8237SATA */
  77                .name           = DRV_NAME,
  78                .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  79                                  IDE_HFLAG_OFF_BOARD,
  80                .swdma_mask     = ATA_SWDMA2,
  81                .mwdma_mask     = ATA_MWDMA2,
  82                .udma_mask      = ATA_UDMA6,
  83        },
  84
  85        {       /* 6: Revolution */
  86                .name           = DRV_NAME,
  87                .port_ops       = &netcell_port_ops,
  88                .host_flags     = IDE_HFLAG_CLEAR_SIMPLEX |
  89                                  IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  90                                  IDE_HFLAG_OFF_BOARD,
  91                .swdma_mask     = ATA_SWDMA2,
  92                .mwdma_mask     = ATA_MWDMA2,
  93                .udma_mask      = ATA_UDMA6,
  94        }
  95};
  96
  97/**
  98 *      generic_init_one        -       called when a PIIX is found
  99 *      @dev: the generic device
 100 *      @id: the matching pci id
 101 *
 102 *      Called when the PCI registration layer (or the IDE initialization)
 103 *      finds a device matching our IDE device tables.
 104 */
 105
 106static int generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 107{
 108        const struct ide_port_info *d = &generic_chipsets[id->driver_data];
 109        int ret = -ENODEV;
 110
 111        /* Don't use the generic entry unless instructed to do so */
 112        if (id->driver_data == 0 && ide_generic_all == 0)
 113                        goto out;
 114
 115        switch (dev->vendor) {
 116        case PCI_VENDOR_ID_UMC:
 117                if (dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
 118                                !(PCI_FUNC(dev->devfn) & 1))
 119                        goto out; /* UM8886A/BF pair */
 120                break;
 121        case PCI_VENDOR_ID_OPTI:
 122                if (dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
 123                                !(PCI_FUNC(dev->devfn) & 1))
 124                        goto out;
 125                break;
 126        case PCI_VENDOR_ID_JMICRON:
 127                if (dev->device != PCI_DEVICE_ID_JMICRON_JMB368 &&
 128                                PCI_FUNC(dev->devfn) != 1)
 129                        goto out;
 130                break;
 131        case PCI_VENDOR_ID_NS:
 132                if (dev->device == PCI_DEVICE_ID_NS_87410 &&
 133                                (dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
 134                        goto out;
 135                break;
 136        }
 137
 138        if (dev->vendor != PCI_VENDOR_ID_JMICRON) {
 139                u16 command;
 140                pci_read_config_word(dev, PCI_COMMAND, &command);
 141                if (!(command & PCI_COMMAND_IO)) {
 142                        printk(KERN_INFO "%s %s: skipping disabled "
 143                                "controller\n", d->name, pci_name(dev));
 144                        goto out;
 145                }
 146        }
 147        ret = ide_pci_init_one(dev, d, NULL);
 148out:
 149        return ret;
 150}
 151
 152static const struct pci_device_id generic_pci_tbl[] = {
 153        { PCI_VDEVICE(NS,       PCI_DEVICE_ID_NS_87410),                 1 },
 154        { PCI_VDEVICE(PCTECH,   PCI_DEVICE_ID_PCTECH_SAMURAI_IDE),       2 },
 155        { PCI_VDEVICE(HOLTEK,   PCI_DEVICE_ID_HOLTEK_6565),              2 },
 156        { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8673F),              3 },
 157        { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886A),              3 },
 158        { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886BF),             3 },
 159        { PCI_VDEVICE(HINT,     PCI_DEVICE_ID_HINT_VXPROII_IDE),         2 },
 160        { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_82C561),               4 },
 161        { PCI_VDEVICE(OPTI,     PCI_DEVICE_ID_OPTI_82C558),              4 },
 162#ifdef CONFIG_BLK_DEV_IDE_SATA
 163        { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_8237_SATA),            5 },
 164#endif
 165        { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_1),        4 },
 166        { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),        4 },
 167        { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_3),        4 },
 168        { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_5),        4 },
 169        { PCI_VDEVICE(NETCELL,  PCI_DEVICE_ID_REVOLUTION),               6 },
 170        /*
 171         * Must come last.  If you add entries adjust
 172         * this table and generic_chipsets[] appropriately.
 173         */
 174        { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 0 },
 175        { 0, },
 176};
 177MODULE_DEVICE_TABLE(pci, generic_pci_tbl);
 178
 179static struct pci_driver generic_pci_driver = {
 180        .name           = "PCI_IDE",
 181        .id_table       = generic_pci_tbl,
 182        .probe          = generic_init_one,
 183        .remove         = ide_pci_remove,
 184        .suspend        = ide_pci_suspend,
 185        .resume         = ide_pci_resume,
 186};
 187
 188static int __init generic_ide_init(void)
 189{
 190        return ide_pci_register_driver(&generic_pci_driver);
 191}
 192
 193static void __exit generic_ide_exit(void)
 194{
 195        pci_unregister_driver(&generic_pci_driver);
 196}
 197
 198module_init(generic_ide_init);
 199module_exit(generic_ide_exit);
 200
 201MODULE_AUTHOR("Andre Hedrick");
 202MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
 203MODULE_LICENSE("GPL");
 204
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