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 int 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
  36#define IDE_HFLAGS_UMC (IDE_HFLAG_NO_DMA | IDE_HFLAG_FORCE_LEGACY_IRQS)
  37
  38#define DECLARE_GENERIC_PCI_DEV(extra_flags) \
  39        { \
  40                .name           = DRV_NAME, \
  41                .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA | \
  42                                  extra_flags, \
  43                .swdma_mask     = ATA_SWDMA2, \
  44                .mwdma_mask     = ATA_MWDMA2, \
  45                .udma_mask      = ATA_UDMA6, \
  46        }
  47
  48static const struct ide_port_info generic_chipsets[] __devinitdata = {
  49        /*  0: Unknown */
  50        DECLARE_GENERIC_PCI_DEV(0),
  51
  52        {       /* 1: NS87410 */
  53                .name           = DRV_NAME,
  54                .enablebits     = { {0x43, 0x08, 0x08}, {0x47, 0x08, 0x08} },
  55                .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
  56                .swdma_mask     = ATA_SWDMA2,
  57                .mwdma_mask     = ATA_MWDMA2,
  58                .udma_mask      = ATA_UDMA6,
  59        },
  60
  61        /*  2: SAMURAI / HT6565 / HINT_IDE */
  62        DECLARE_GENERIC_PCI_DEV(0),
  63        /*  3: UM8673F / UM8886A / UM8886BF */
  64        DECLARE_GENERIC_PCI_DEV(IDE_HFLAGS_UMC),
  65        /*  4: VIA_IDE / OPTI621V / Piccolo010{2,3,5} */
  66        DECLARE_GENERIC_PCI_DEV(IDE_HFLAG_NO_AUTODMA),
  67
  68        {       /* 5: VIA8237SATA */
  69                .name           = DRV_NAME,
  70                .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  71                                  IDE_HFLAG_OFF_BOARD,
  72                .swdma_mask     = ATA_SWDMA2,
  73                .mwdma_mask     = ATA_MWDMA2,
  74                .udma_mask      = ATA_UDMA6,
  75        },
  76
  77        {       /* 6: Revolution */
  78                .name           = DRV_NAME,
  79                .host_flags     = IDE_HFLAG_CLEAR_SIMPLEX |
  80                                  IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  81                                  IDE_HFLAG_OFF_BOARD,
  82                .swdma_mask     = ATA_SWDMA2,
  83                .mwdma_mask     = ATA_MWDMA2,
  84                .udma_mask      = ATA_UDMA6,
  85        }
  86};
  87
  88/**
  89 *      generic_init_one        -       called when a PIIX is found
  90 *      @dev: the generic device
  91 *      @id: the matching pci id
  92 *
  93 *      Called when the PCI registration layer (or the IDE initialization)
  94 *      finds a device matching our IDE device tables.
  95 */
  96
  97static int __devinit generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
  98{
  99        const struct ide_port_info *d = &generic_chipsets[id->driver_data];
 100        int ret = -ENODEV;
 101
 102        /* Don't use the generic entry unless instructed to do so */
 103        if (id->driver_data == 0 && ide_generic_all == 0)
 104                        goto out;
 105
 106        switch (dev->vendor) {
 107        case PCI_VENDOR_ID_UMC:
 108                if (dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
 109                                !(PCI_FUNC(dev->devfn) & 1))
 110                        goto out; /* UM8886A/BF pair */
 111                break;
 112        case PCI_VENDOR_ID_OPTI:
 113                if (dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
 114                                !(PCI_FUNC(dev->devfn) & 1))
 115                        goto out;
 116                break;
 117        case PCI_VENDOR_ID_JMICRON:
 118                if (dev->device != PCI_DEVICE_ID_JMICRON_JMB368 &&
 119                                PCI_FUNC(dev->devfn) != 1)
 120                        goto out;
 121                break;
 122        case PCI_VENDOR_ID_NS:
 123                if (dev->device == PCI_DEVICE_ID_NS_87410 &&
 124                                (dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
 125                        goto out;
 126                break;
 127        }
 128
 129        if (dev->vendor != PCI_VENDOR_ID_JMICRON) {
 130                u16 command;
 131                pci_read_config_word(dev, PCI_COMMAND, &command);
 132                if (!(command & PCI_COMMAND_IO)) {
 133                        printk(KERN_INFO "%s %s: skipping disabled "
 134                                "controller\n", d->name, pci_name(dev));
 135                        goto out;
 136                }
 137        }
 138        ret = ide_pci_init_one(dev, d, NULL);
 139out:
 140        return ret;
 141}
 142
 143static const struct pci_device_id generic_pci_tbl[] = {
 144        { PCI_VDEVICE(NS,       PCI_DEVICE_ID_NS_87410),                 1 },
 145        { PCI_VDEVICE(PCTECH,   PCI_DEVICE_ID_PCTECH_SAMURAI_IDE),       2 },
 146        { PCI_VDEVICE(HOLTEK,   PCI_DEVICE_ID_HOLTEK_6565),              2 },
 147        { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8673F),              3 },
 148        { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886A),              3 },
 149        { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886BF),             3 },
 150        { PCI_VDEVICE(HINT,     PCI_DEVICE_ID_HINT_VXPROII_IDE),         2 },
 151        { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_82C561),               4 },
 152        { PCI_VDEVICE(OPTI,     PCI_DEVICE_ID_OPTI_82C558),              4 },
 153#ifdef CONFIG_BLK_DEV_IDE_SATA
 154        { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_8237_SATA),            5 },
 155#endif
 156        { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO),          4 },
 157        { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_1),        4 },
 158        { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),        4 },
 159        { PCI_VDEVICE(NETCELL,  PCI_DEVICE_ID_REVOLUTION),               6 },
 160        /*
 161         * Must come last.  If you add entries adjust
 162         * this table and generic_chipsets[] appropriately.
 163         */
 164        { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 0 },
 165        { 0, },
 166};
 167MODULE_DEVICE_TABLE(pci, generic_pci_tbl);
 168
 169static struct pci_driver generic_pci_driver = {
 170        .name           = "PCI_IDE",
 171        .id_table       = generic_pci_tbl,
 172        .probe          = generic_init_one,
 173        .remove         = ide_pci_remove,
 174        .suspend        = ide_pci_suspend,
 175        .resume         = ide_pci_resume,
 176};
 177
 178static int __init generic_ide_init(void)
 179{
 180        return ide_pci_register_driver(&generic_pci_driver);
 181}
 182
 183static void __exit generic_ide_exit(void)
 184{
 185        pci_unregister_driver(&generic_pci_driver);
 186}
 187
 188module_init(generic_ide_init);
 189module_exit(generic_ide_exit);
 190
 191MODULE_AUTHOR("Andre Hedrick");
 192MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
 193MODULE_LICENSE("GPL");
 194