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