drivers/ide/ide-pci-generic.c

   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
  31 static bool ide_generic_all;            /* Set to claim all devices */
  32
  33 module_param_named(all_generic_ide, ide_generic_all, bool, 0444);
  34 MODULE_PARM_DESC(all_generic_ide, "IDE generic will claim all unknown PCI IDE storage controllers.");
  35
  36 static void netcell_quirkproc(ide_drive_t *drive)
  37 {
  38         /* mark words 85-87 as valid */
  39         drive->id[ATA_ID_CSF_DEFAULT] |= 0x4000;
  40 }
  41
  42 static const struct ide_port_ops netcell_port_ops = {
  43         .quirkproc              = netcell_quirkproc,
  44 };
  45
  46 #define DECLARE_GENERIC_PCI_DEV(extra_flags) \
  47         { \
  48                 .name           = DRV_NAME, \
  49                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA | \
  50                                   extra_flags, \
  51                 .swdma_mask     = ATA_SWDMA2, \
  52                 .mwdma_mask     = ATA_MWDMA2, \
  53                 .udma_mask      = ATA_UDMA6, \
  54         }
  55
  56 static const struct ide_port_info generic_chipsets[] = {
  57         /*  0: Unknown */
  58         DECLARE_GENERIC_PCI_DEV(0),
  59
  60         {       /* 1: NS87410 */
  61                 .name           = DRV_NAME,
  62                 .enablebits     = { {0x43, 0x08, 0x08}, {0x47, 0x08, 0x08} },
  63                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
  64                 .swdma_mask     = ATA_SWDMA2,
  65                 .mwdma_mask     = ATA_MWDMA2,
  66                 .udma_mask      = ATA_UDMA6,
  67         },
  68
  69         /*  2: SAMURAI / HT6565 / HINT_IDE */
  70         DECLARE_GENERIC_PCI_DEV(0),
  71         /*  3: UM8673F / UM8886A / UM8886BF */
  72         DECLARE_GENERIC_PCI_DEV(IDE_HFLAG_NO_DMA),
  73         /*  4: VIA_IDE / OPTI621V / Piccolo010{2,3,5} */
  74         DECLARE_GENERIC_PCI_DEV(IDE_HFLAG_NO_AUTODMA),
  75
  76         {       /* 5: VIA8237SATA */
  77                 .name           = DRV_NAME,
  78                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  79                                   IDE_HFLAG_OFF_BOARD,
  80                 .swdma_mask     = ATA_SWDMA2,
  81                 .mwdma_mask     = ATA_MWDMA2,
  82                 .udma_mask      = ATA_UDMA6,
  83         },
  84
  85         {       /* 6: Revolution */
  86                 .name           = DRV_NAME,
  87                 .port_ops       = &netcell_port_ops,
  88                 .host_flags     = IDE_HFLAG_CLEAR_SIMPLEX |
  89                                   IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  90                                   IDE_HFLAG_OFF_BOARD,
  91                 .swdma_mask     = ATA_SWDMA2,
  92                 .mwdma_mask     = ATA_MWDMA2,
  93                 .udma_mask      = ATA_UDMA6,
  94         }
  95 };
  96
  97 /**
  98  *      generic_init_one        -       called when a PIIX is found
  99  *      @dev: the generic device
 100  *      @id: the matching pci id
 101  *
 102  *      Called when the PCI registration layer (or the IDE initialization)
 103  *      finds a device matching our IDE device tables.
 104  */
 105
 106 static int generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 107 {
 108         const struct ide_port_info *d = &generic_chipsets[id->driver_data];
 109         int ret = -ENODEV;
 110
 111         /* Don't use the generic entry unless instructed to do so */
 112         if (id->driver_data == 0 && ide_generic_all == 0)
 113                         goto out;
 114
 115         switch (dev->vendor) {
 116         case PCI_VENDOR_ID_UMC:
 117                 if (dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
 118                                 !(PCI_FUNC(dev->devfn) & 1))
 119                         goto out; /* UM8886A/BF pair */
 120                 break;
 121         case PCI_VENDOR_ID_OPTI:
 122                 if (dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
 123                                 !(PCI_FUNC(dev->devfn) & 1))
 124                         goto out;
 125                 break;
 126         case PCI_VENDOR_ID_JMICRON:
 127                 if (dev->device != PCI_DEVICE_ID_JMICRON_JMB368 &&
 128                                 PCI_FUNC(dev->devfn) != 1)
 129                         goto out;
 130                 break;
 131         case PCI_VENDOR_ID_NS:
 132                 if (dev->device == PCI_DEVICE_ID_NS_87410 &&
 133                                 (dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
 134                         goto out;
 135                 break;
 136         }
 137
 138         if (dev->vendor != PCI_VENDOR_ID_JMICRON) {
 139                 u16 command;
 140                 pci_read_config_word(dev, PCI_COMMAND, &command);
 141                 if (!(command & PCI_COMMAND_IO)) {
 142                         printk(KERN_INFO "%s %s: skipping disabled "
 143                                 "controller\n", d->name, pci_name(dev));
 144                         goto out;
 145                 }
 146         }
 147         ret = ide_pci_init_one(dev, d, NULL);
 148 out:
 149         return ret;
 150 }
 151
 152 static const struct pci_device_id generic_pci_tbl[] = {
 153         { PCI_VDEVICE(NS,       PCI_DEVICE_ID_NS_87410),                 1 },
 154         { PCI_VDEVICE(PCTECH,   PCI_DEVICE_ID_PCTECH_SAMURAI_IDE),       2 },
 155         { PCI_VDEVICE(HOLTEK,   PCI_DEVICE_ID_HOLTEK_6565),              2 },
 156         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8673F),              3 },
 157         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886A),              3 },
 158         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886BF),             3 },
 159         { PCI_VDEVICE(HINT,     PCI_DEVICE_ID_HINT_VXPROII_IDE),         2 },
 160         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_82C561),               4 },
 161         { PCI_VDEVICE(OPTI,     PCI_DEVICE_ID_OPTI_82C558),              4 },
 162 #ifdef CONFIG_BLK_DEV_IDE_SATA
 163         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_8237_SATA),            5 },
 164 #endif
 165         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_1),        4 },
 166         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),        4 },
 167         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_3),        4 },
 168         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_5),        4 },
 169         { PCI_VDEVICE(NETCELL,  PCI_DEVICE_ID_REVOLUTION),               6 },
 170         /*
 171          * Must come last.  If you add entries adjust
 172          * this table and generic_chipsets[] appropriately.
 173          */
 174         { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 0 },
 175         { 0, },
 176 };
 177 MODULE_DEVICE_TABLE(pci, generic_pci_tbl);
 178
 179 static struct pci_driver generic_pci_driver = {
 180         .name           = "PCI_IDE",
 181         .id_table       = generic_pci_tbl,
 182         .probe          = generic_init_one,
 183         .remove         = ide_pci_remove,
 184         .suspend        = ide_pci_suspend,
 185         .resume         = ide_pci_resume,
 186 };
 187
 188 static int __init generic_ide_init(void)
 189 {
 190         return ide_pci_register_driver(&generic_pci_driver);
 191 }
 192
 193 static void __exit generic_ide_exit(void)
 194 {
 195         pci_unregister_driver(&generic_pci_driver);
 196 }
 197
 198 module_init(generic_ide_init);
 199 module_exit(generic_ide_exit);
 200
 201 MODULE_AUTHOR("Andre Hedrick");
 202 MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
 203 MODULE_LICENSE("GPL");