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