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 /*
  33  * the module_param_named() was added for the modular case
  34  * the __setup() is left as compatibility for existing setups
  35  */
  36 #ifndef MODULE
  37 static int __init ide_generic_all_on(char *unused)
  38 {
  39         ide_generic_all = 1;
  40         printk(KERN_INFO "IDE generic will claim all unknown PCI IDE storage controllers.\n");
  41         return 1;
  42 }
  43 const __setup("all-generic-ide", ide_generic_all_on);
  44 #endif
  45 module_param_named(all_generic_ide, ide_generic_all, bool, 0444);
  46 MODULE_PARM_DESC(all_generic_ide, "IDE generic will claim all unknown PCI IDE storage controllers.");
  47
  48 #define IDE_HFLAGS_UMC (IDE_HFLAG_NO_DMA | IDE_HFLAG_FORCE_LEGACY_IRQS)
  49
  50 #define DECLARE_GENERIC_PCI_DEV(name_str, extra_flags) \
  51         { \
  52                 .name           = name_str, \
  53                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA | \
  54                                   extra_flags | \
  55                                   IDE_HFLAG_BOOTABLE, \
  56                 .swdma_mask     = ATA_SWDMA2, \
  57                 .mwdma_mask     = ATA_MWDMA2, \
  58                 .udma_mask      = ATA_UDMA6, \
  59         }
  60
  61 static const struct ide_port_info generic_chipsets[] __devinitdata = {
  62         /*  0 */ DECLARE_GENERIC_PCI_DEV("Unknown",     0),
  63
  64         {       /* 1 */
  65                 .name           = "NS87410",
  66                 .enablebits     = {{0x43,0x08,0x08}, {0x47,0x08,0x08}},
  67                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  68                                   IDE_HFLAG_BOOTABLE,
  69                 .swdma_mask     = ATA_SWDMA2,
  70                 .mwdma_mask     = ATA_MWDMA2,
  71                 .udma_mask      = ATA_UDMA6,
  72         },
  73
  74         /*  2 */ DECLARE_GENERIC_PCI_DEV("SAMURAI",     0),
  75         /*  3 */ DECLARE_GENERIC_PCI_DEV("HT6565",      0),
  76         /*  4 */ DECLARE_GENERIC_PCI_DEV("UM8673F",     IDE_HFLAGS_UMC),
  77         /*  5 */ DECLARE_GENERIC_PCI_DEV("UM8886A",     IDE_HFLAGS_UMC),
  78         /*  6 */ DECLARE_GENERIC_PCI_DEV("UM8886BF",    IDE_HFLAGS_UMC),
  79         /*  7 */ DECLARE_GENERIC_PCI_DEV("HINT_IDE",    0),
  80         /*  8 */ DECLARE_GENERIC_PCI_DEV("VIA_IDE",     IDE_HFLAG_NO_AUTODMA),
  81         /*  9 */ DECLARE_GENERIC_PCI_DEV("OPTI621V",    IDE_HFLAG_NO_AUTODMA),
  82
  83         {       /* 10 */
  84                 .name           = "VIA8237SATA",
  85                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  86                                   IDE_HFLAG_OFF_BOARD,
  87                 .swdma_mask     = ATA_SWDMA2,
  88                 .mwdma_mask     = ATA_MWDMA2,
  89                 .udma_mask      = ATA_UDMA6,
  90         },
  91
  92         /* 11 */ DECLARE_GENERIC_PCI_DEV("Piccolo0102", IDE_HFLAG_NO_AUTODMA),
  93         /* 12 */ DECLARE_GENERIC_PCI_DEV("Piccolo0103", IDE_HFLAG_NO_AUTODMA),
  94         /* 13 */ DECLARE_GENERIC_PCI_DEV("Piccolo0105", IDE_HFLAG_NO_AUTODMA),
  95
  96         {       /* 14 */
  97                 .name           = "Revolution",
  98                 .host_flags     = IDE_HFLAG_CLEAR_SIMPLEX |
  99                                   IDE_HFLAG_TRUST_BIOS_FOR_DMA |
 100                                   IDE_HFLAG_OFF_BOARD,
 101                 .swdma_mask     = ATA_SWDMA2,
 102                 .mwdma_mask     = ATA_MWDMA2,
 103                 .udma_mask      = ATA_UDMA6,
 104         }
 105 };
 106
 107 /**
 108  *      generic_init_one        -       called when a PIIX is found
 109  *      @dev: the generic device
 110  *      @id: the matching pci id
 111  *
 112  *      Called when the PCI registration layer (or the IDE initialization)
 113  *      finds a device matching our IDE device tables.
 114  */
 115
 116 static int __devinit generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 117 {
 118         const struct ide_port_info *d = &generic_chipsets[id->driver_data];
 119         int ret = -ENODEV;
 120
 121         /* Don't use the generic entry unless instructed to do so */
 122         if (id->driver_data == 0 && ide_generic_all == 0)
 123                         goto out;
 124
 125         switch (dev->vendor) {
 126         case PCI_VENDOR_ID_UMC:
 127                 if (dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
 128                                 !(PCI_FUNC(dev->devfn) & 1))
 129                         goto out; /* UM8886A/BF pair */
 130                 break;
 131         case PCI_VENDOR_ID_OPTI:
 132                 if (dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
 133                                 !(PCI_FUNC(dev->devfn) & 1))
 134                         goto out;
 135                 break;
 136         case PCI_VENDOR_ID_JMICRON:
 137                 if (dev->device != PCI_DEVICE_ID_JMICRON_JMB368 &&
 138                                 PCI_FUNC(dev->devfn) != 1)
 139                         goto out;
 140                 break;
 141         case PCI_VENDOR_ID_NS:
 142                 if (dev->device == PCI_DEVICE_ID_NS_87410 &&
 143                                 (dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
 144                         goto out;
 145                 break;
 146         }
 147
 148         if (dev->vendor != PCI_VENDOR_ID_JMICRON) {
 149                 u16 command;
 150                 pci_read_config_word(dev, PCI_COMMAND, &command);
 151                 if (!(command & PCI_COMMAND_IO)) {
 152                         printk(KERN_INFO "Skipping disabled %s IDE "
 153                                         "controller.\n", d->name);
 154                         goto out;
 155                 }
 156         }
 157         ret = ide_setup_pci_device(dev, d);
 158 out:
 159         return ret;
 160 }
 161
 162 static const struct pci_device_id generic_pci_tbl[] = {
 163         { PCI_VDEVICE(NS,       PCI_DEVICE_ID_NS_87410),                 1 },
 164         { PCI_VDEVICE(PCTECH,   PCI_DEVICE_ID_PCTECH_SAMURAI_IDE),       2 },
 165         { PCI_VDEVICE(HOLTEK,   PCI_DEVICE_ID_HOLTEK_6565),              3 },
 166         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8673F),              4 },
 167         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886A),              5 },
 168         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886BF),             6 },
 169         { PCI_VDEVICE(HINT,     PCI_DEVICE_ID_HINT_VXPROII_IDE),         7 },
 170         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_82C561),               8 },
 171         { PCI_VDEVICE(OPTI,     PCI_DEVICE_ID_OPTI_82C558),              9 },
 172 #ifdef CONFIG_BLK_DEV_IDE_SATA
 173         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_8237_SATA),           10 },
 174 #endif
 175         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO),         11 },
 176         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_1),       12 },
 177         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),       13 },
 178         { PCI_VDEVICE(NETCELL,  PCI_DEVICE_ID_REVOLUTION),              14 },
 179         /*
 180          * Must come last.  If you add entries adjust
 181          * this table and generic_chipsets[] appropriately.
 182          */
 183         { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 0 },
 184         { 0, },
 185 };
 186 MODULE_DEVICE_TABLE(pci, generic_pci_tbl);
 187
 188 static struct pci_driver driver = {
 189         .name           = "PCI_IDE",
 190         .id_table       = generic_pci_tbl,
 191         .probe          = generic_init_one,
 192 };
 193
 194 static int __init generic_ide_init(void)
 195 {
 196         return ide_pci_register_driver(&driver);
 197 }
 198
 199 module_init(generic_ide_init);
 200
 201 MODULE_AUTHOR("Andre Hedrick");
 202 MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
 203 MODULE_LICENSE("GPL");