drivers/ide/pci/generic.c

   1 /*
   2  *  Copyright (C) 2001-2002     Andre Hedrick <andre@linux-ide.org>
   3  *  Portions (C) Copyright 2002  Red Hat Inc <alan@redhat.com>
   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/hdreg.h>
  26 #include <linux/pci.h>
  27 #include <linux/ide.h>
  28 #include <linux/init.h>
  29
  30 static int ide_generic_all;             /* Set to claim all devices */
  31
  32 module_param_named(all_generic_ide, ide_generic_all, bool, 0444);
  33 MODULE_PARM_DESC(all_generic_ide, "IDE generic will claim all unknown PCI IDE storage controllers.");
  34
  35 #define IDE_HFLAGS_UMC (IDE_HFLAG_NO_DMA | IDE_HFLAG_FORCE_LEGACY_IRQS)
  36
  37 #define DECLARE_GENERIC_PCI_DEV(name_str, extra_flags) \
  38         { \
  39                 .name           = name_str, \
  40                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA | \
  41                                   extra_flags | \
  42                                   IDE_HFLAG_BOOTABLE, \
  43                 .swdma_mask     = ATA_SWDMA2, \
  44                 .mwdma_mask     = ATA_MWDMA2, \
  45                 .udma_mask      = ATA_UDMA6, \
  46         }
  47
  48 static const struct ide_port_info generic_chipsets[] __devinitdata = {
  49         /*  0 */ DECLARE_GENERIC_PCI_DEV("Unknown",     0),
  50
  51         {       /* 1 */
  52                 .name           = "NS87410",
  53                 .enablebits     = {{0x43,0x08,0x08}, {0x47,0x08,0x08}},
  54                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  55                                   IDE_HFLAG_BOOTABLE,
  56                 .swdma_mask     = ATA_SWDMA2,
  57                 .mwdma_mask     = ATA_MWDMA2,
  58                 .udma_mask      = ATA_UDMA6,
  59         },
  60
  61         /*  2 */ DECLARE_GENERIC_PCI_DEV("SAMURAI",     0),
  62         /*  3 */ DECLARE_GENERIC_PCI_DEV("HT6565",      0),
  63         /*  4 */ DECLARE_GENERIC_PCI_DEV("UM8673F",     IDE_HFLAGS_UMC),
  64         /*  5 */ DECLARE_GENERIC_PCI_DEV("UM8886A",     IDE_HFLAGS_UMC),
  65         /*  6 */ DECLARE_GENERIC_PCI_DEV("UM8886BF",    IDE_HFLAGS_UMC),
  66         /*  7 */ DECLARE_GENERIC_PCI_DEV("HINT_IDE",    0),
  67         /*  8 */ DECLARE_GENERIC_PCI_DEV("VIA_IDE",     IDE_HFLAG_NO_AUTODMA),
  68         /*  9 */ DECLARE_GENERIC_PCI_DEV("OPTI621V",    IDE_HFLAG_NO_AUTODMA),
  69
  70         {       /* 10 */
  71                 .name           = "VIA8237SATA",
  72                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  73                                   IDE_HFLAG_OFF_BOARD,
  74                 .swdma_mask     = ATA_SWDMA2,
  75                 .mwdma_mask     = ATA_MWDMA2,
  76                 .udma_mask      = ATA_UDMA6,
  77         },
  78
  79         /* 11 */ DECLARE_GENERIC_PCI_DEV("Piccolo0102", IDE_HFLAG_NO_AUTODMA),
  80         /* 12 */ DECLARE_GENERIC_PCI_DEV("Piccolo0103", IDE_HFLAG_NO_AUTODMA),
  81         /* 13 */ DECLARE_GENERIC_PCI_DEV("Piccolo0105", IDE_HFLAG_NO_AUTODMA),
  82
  83         {       /* 14 */
  84                 .name           = "Revolution",
  85                 .host_flags     = IDE_HFLAG_CLEAR_SIMPLEX |
  86                                   IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  87                                   IDE_HFLAG_OFF_BOARD,
  88                 .swdma_mask     = ATA_SWDMA2,
  89                 .mwdma_mask     = ATA_MWDMA2,
  90                 .udma_mask      = ATA_UDMA6,
  91         }
  92 };
  93
  94 /**
  95  *      generic_init_one        -       called when a PIIX is found
  96  *      @dev: the generic device
  97  *      @id: the matching pci id
  98  *
  99  *      Called when the PCI registration layer (or the IDE initialization)
 100  *      finds a device matching our IDE device tables.
 101  */
 102
 103 static int __devinit generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 104 {
 105         const struct ide_port_info *d = &generic_chipsets[id->driver_data];
 106         int ret = -ENODEV;
 107
 108         /* Don't use the generic entry unless instructed to do so */
 109         if (id->driver_data == 0 && ide_generic_all == 0)
 110                         goto out;
 111
 112         switch (dev->vendor) {
 113         case PCI_VENDOR_ID_UMC:
 114                 if (dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
 115                                 !(PCI_FUNC(dev->devfn) & 1))
 116                         goto out; /* UM8886A/BF pair */
 117                 break;
 118         case PCI_VENDOR_ID_OPTI:
 119                 if (dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
 120                                 !(PCI_FUNC(dev->devfn) & 1))
 121                         goto out;
 122                 break;
 123         case PCI_VENDOR_ID_JMICRON:
 124                 if (dev->device != PCI_DEVICE_ID_JMICRON_JMB368 &&
 125                                 PCI_FUNC(dev->devfn) != 1)
 126                         goto out;
 127                 break;
 128         case PCI_VENDOR_ID_NS:
 129                 if (dev->device == PCI_DEVICE_ID_NS_87410 &&
 130                                 (dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
 131                         goto out;
 132                 break;
 133         }
 134
 135         if (dev->vendor != PCI_VENDOR_ID_JMICRON) {
 136                 u16 command;
 137                 pci_read_config_word(dev, PCI_COMMAND, &command);
 138                 if (!(command & PCI_COMMAND_IO)) {
 139                         printk(KERN_INFO "Skipping disabled %s IDE "
 140                                         "controller.\n", d->name);
 141                         goto out;
 142                 }
 143         }
 144         ret = ide_setup_pci_device(dev, d);
 145 out:
 146         return ret;
 147 }
 148
 149 static const struct pci_device_id generic_pci_tbl[] = {
 150         { PCI_VDEVICE(NS,       PCI_DEVICE_ID_NS_87410),                 1 },
 151         { PCI_VDEVICE(PCTECH,   PCI_DEVICE_ID_PCTECH_SAMURAI_IDE),       2 },
 152         { PCI_VDEVICE(HOLTEK,   PCI_DEVICE_ID_HOLTEK_6565),              3 },
 153         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8673F),              4 },
 154         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886A),              5 },
 155         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886BF),             6 },
 156         { PCI_VDEVICE(HINT,     PCI_DEVICE_ID_HINT_VXPROII_IDE),         7 },
 157         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_82C561),               8 },
 158         { PCI_VDEVICE(OPTI,     PCI_DEVICE_ID_OPTI_82C558),              9 },
 159 #ifdef CONFIG_BLK_DEV_IDE_SATA
 160         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_8237_SATA),           10 },
 161 #endif
 162         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO),         11 },
 163         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_1),       12 },
 164         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),       13 },
 165         { PCI_VDEVICE(NETCELL,  PCI_DEVICE_ID_REVOLUTION),              14 },
 166         /*
 167          * Must come last.  If you add entries adjust
 168          * this table and generic_chipsets[] appropriately.
 169          */
 170         { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 0 },
 171         { 0, },
 172 };
 173 MODULE_DEVICE_TABLE(pci, generic_pci_tbl);
 174
 175 static struct pci_driver driver = {
 176         .name           = "PCI_IDE",
 177         .id_table       = generic_pci_tbl,
 178         .probe          = generic_init_one,
 179 };
 180
 181 static int __init generic_ide_init(void)
 182 {
 183         return ide_pci_register_driver(&driver);
 184 }
 185
 186 module_init(generic_ide_init);
 187
 188 MODULE_AUTHOR("Andre Hedrick");
 189 MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
 190 MODULE_LICENSE("GPL");