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 #define DRV_NAME "ide_pci_generic"
  31
  32 static int ide_generic_all;             /* Set to claim all devices */
  33
  34 module_param_named(all_generic_ide, ide_generic_all, bool, 0444);
  35 MODULE_PARM_DESC(all_generic_ide, "IDE generic will claim all unknown PCI IDE storage controllers.");
  36
  37 #define IDE_HFLAGS_UMC (IDE_HFLAG_NO_DMA | IDE_HFLAG_FORCE_LEGACY_IRQS)
  38
  39 #define DECLARE_GENERIC_PCI_DEV(extra_flags) \
  40         { \
  41                 .name           = DRV_NAME, \
  42                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA | \
  43                                   extra_flags, \
  44                 .swdma_mask     = ATA_SWDMA2, \
  45                 .mwdma_mask     = ATA_MWDMA2, \
  46                 .udma_mask      = ATA_UDMA6, \
  47         }
  48
  49 static const struct ide_port_info generic_chipsets[] __devinitdata = {
  50         /*  0: Unknown */
  51         DECLARE_GENERIC_PCI_DEV(0),
  52
  53         {       /* 1: NS87410 */
  54                 .name           = DRV_NAME,
  55                 .enablebits     = { {0x43, 0x08, 0x08}, {0x47, 0x08, 0x08} },
  56                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
  57                 .swdma_mask     = ATA_SWDMA2,
  58                 .mwdma_mask     = ATA_MWDMA2,
  59                 .udma_mask      = ATA_UDMA6,
  60         },
  61
  62         /*  2: SAMURAI / HT6565 / HINT_IDE */
  63         DECLARE_GENERIC_PCI_DEV(0),
  64         /*  3: UM8673F / UM8886A / UM8886BF */
  65         DECLARE_GENERIC_PCI_DEV(IDE_HFLAGS_UMC),
  66         /*  4: VIA_IDE / OPTI621V / Piccolo010{2,3,5} */
  67         DECLARE_GENERIC_PCI_DEV(IDE_HFLAG_NO_AUTODMA),
  68
  69         {       /* 5: VIA8237SATA */
  70                 .name           = DRV_NAME,
  71                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  72                                   IDE_HFLAG_OFF_BOARD,
  73                 .swdma_mask     = ATA_SWDMA2,
  74                 .mwdma_mask     = ATA_MWDMA2,
  75                 .udma_mask      = ATA_UDMA6,
  76         },
  77
  78         {       /* 6: Revolution */
  79                 .name           = DRV_NAME,
  80                 .host_flags     = IDE_HFLAG_CLEAR_SIMPLEX |
  81                                   IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  82                                   IDE_HFLAG_OFF_BOARD,
  83                 .swdma_mask     = ATA_SWDMA2,
  84                 .mwdma_mask     = ATA_MWDMA2,
  85                 .udma_mask      = ATA_UDMA6,
  86         }
  87 };
  88
  89 /**
  90  *      generic_init_one        -       called when a PIIX is found
  91  *      @dev: the generic device
  92  *      @id: the matching pci id
  93  *
  94  *      Called when the PCI registration layer (or the IDE initialization)
  95  *      finds a device matching our IDE device tables.
  96  */
  97
  98 static int __devinit generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
  99 {
 100         const struct ide_port_info *d = &generic_chipsets[id->driver_data];
 101         int ret = -ENODEV;
 102
 103         /* Don't use the generic entry unless instructed to do so */
 104         if (id->driver_data == 0 && ide_generic_all == 0)
 105                         goto out;
 106
 107         switch (dev->vendor) {
 108         case PCI_VENDOR_ID_UMC:
 109                 if (dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
 110                                 !(PCI_FUNC(dev->devfn) & 1))
 111                         goto out; /* UM8886A/BF pair */
 112                 break;
 113         case PCI_VENDOR_ID_OPTI:
 114                 if (dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
 115                                 !(PCI_FUNC(dev->devfn) & 1))
 116                         goto out;
 117                 break;
 118         case PCI_VENDOR_ID_JMICRON:
 119                 if (dev->device != PCI_DEVICE_ID_JMICRON_JMB368 &&
 120                                 PCI_FUNC(dev->devfn) != 1)
 121                         goto out;
 122                 break;
 123         case PCI_VENDOR_ID_NS:
 124                 if (dev->device == PCI_DEVICE_ID_NS_87410 &&
 125                                 (dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
 126                         goto out;
 127                 break;
 128         }
 129
 130         if (dev->vendor != PCI_VENDOR_ID_JMICRON) {
 131                 u16 command;
 132                 pci_read_config_word(dev, PCI_COMMAND, &command);
 133                 if (!(command & PCI_COMMAND_IO)) {
 134                         printk(KERN_INFO "%s %s: skipping disabled "
 135                                 "controller\n", d->name, pci_name(dev));
 136                         goto out;
 137                 }
 138         }
 139         ret = ide_pci_init_one(dev, d, NULL);
 140 out:
 141         return ret;
 142 }
 143
 144 static const struct pci_device_id generic_pci_tbl[] = {
 145         { PCI_VDEVICE(NS,       PCI_DEVICE_ID_NS_87410),                 1 },
 146         { PCI_VDEVICE(PCTECH,   PCI_DEVICE_ID_PCTECH_SAMURAI_IDE),       2 },
 147         { PCI_VDEVICE(HOLTEK,   PCI_DEVICE_ID_HOLTEK_6565),              2 },
 148         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8673F),              3 },
 149         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886A),              3 },
 150         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886BF),             3 },
 151         { PCI_VDEVICE(HINT,     PCI_DEVICE_ID_HINT_VXPROII_IDE),         2 },
 152         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_82C561),               4 },
 153         { PCI_VDEVICE(OPTI,     PCI_DEVICE_ID_OPTI_82C558),              4 },
 154 #ifdef CONFIG_BLK_DEV_IDE_SATA
 155         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_8237_SATA),            5 },
 156 #endif
 157         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO),          4 },
 158         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_1),        4 },
 159         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),        4 },
 160         { PCI_VDEVICE(NETCELL,  PCI_DEVICE_ID_REVOLUTION),               6 },
 161         /*
 162          * Must come last.  If you add entries adjust
 163          * this table and generic_chipsets[] appropriately.
 164          */
 165         { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 0 },
 166         { 0, },
 167 };
 168 MODULE_DEVICE_TABLE(pci, generic_pci_tbl);
 169
 170 static struct pci_driver driver = {
 171         .name           = "PCI_IDE",
 172         .id_table       = generic_pci_tbl,
 173         .probe          = generic_init_one,
 174         .remove         = ide_pci_remove,
 175 };
 176
 177 static int __init generic_ide_init(void)
 178 {
 179         return ide_pci_register_driver(&driver);
 180 }
 181
 182 static void __exit generic_ide_exit(void)
 183 {
 184         pci_unregister_driver(&driver);
 185 }
 186
 187 module_init(generic_ide_init);
 188 module_exit(generic_ide_exit);
 189
 190 MODULE_AUTHOR("Andre Hedrick");
 191 MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
 192 MODULE_LICENSE("GPL");