drivers/ide/pci/generic.c

   1 /*
   2  *  linux/drivers/ide/pci/generic.c     Version 0.11    December 30, 2002
   3  *
   4  *  Copyright (C) 2001-2002     Andre Hedrick <andre@linux-ide.org>
   5  *  Portions (C) Copyright 2002  Red Hat Inc <alan@redhat.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2, or (at your option) any
  10  * later version.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * For the avoidance of doubt the "preferred form" of this code is one which
  18  * is in an open non patent encumbered format. Where cryptographic key signing
  19  * forms part of the process of creating an executable the information
  20  * including keys needed to generate an equivalently functional executable
  21  * are deemed to be part of the source code.
  22  */
  23
  24 #include <linux/types.h>
  25 #include <linux/module.h>
  26 #include <linux/kernel.h>
  27 #include <linux/delay.h>
  28 #include <linux/timer.h>
  29 #include <linux/mm.h>
  30 #include <linux/ioport.h>
  31 #include <linux/blkdev.h>
  32 #include <linux/hdreg.h>
  33 #include <linux/pci.h>
  34 #include <linux/ide.h>
  35 #include <linux/init.h>
  36
  37 #include <asm/io.h>
  38
  39 static int ide_generic_all;             /* Set to claim all devices */
  40
  41 /*
  42  * the module_param_named() was added for the modular case
  43  * the __setup() is left as compatibility for existing setups
  44  */
  45 #ifndef MODULE
  46 static int __init ide_generic_all_on(char *unused)
  47 {
  48         ide_generic_all = 1;
  49         printk(KERN_INFO "IDE generic will claim all unknown PCI IDE storage controllers.\n");
  50         return 1;
  51 }
  52 __setup("all-generic-ide", ide_generic_all_on);
  53 #endif
  54 module_param_named(all_generic_ide, ide_generic_all, bool, 0444);
  55 MODULE_PARM_DESC(all_generic_ide, "IDE generic will claim all unknown PCI IDE storage controllers.");
  56
  57 #define IDE_HFLAGS_UMC (IDE_HFLAG_NO_DMA | IDE_HFLAG_FORCE_LEGACY_IRQS)
  58
  59 #define DECLARE_GENERIC_PCI_DEV(name_str, extra_flags) \
  60         { \
  61                 .name           = name_str, \
  62                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA | \
  63                                   extra_flags | \
  64                                   IDE_HFLAG_BOOTABLE, \
  65                 .swdma_mask     = ATA_SWDMA2, \
  66                 .mwdma_mask     = ATA_MWDMA2, \
  67                 .udma_mask      = ATA_UDMA6, \
  68         }
  69
  70 static ide_pci_device_t generic_chipsets[] __devinitdata = {
  71         /*  0 */ DECLARE_GENERIC_PCI_DEV("Unknown",     0),
  72
  73         {       /* 1 */
  74                 .name           = "NS87410",
  75                 .enablebits     = {{0x43,0x08,0x08}, {0x47,0x08,0x08}},
  76                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  77                                   IDE_HFLAG_BOOTABLE,
  78                 .swdma_mask     = ATA_SWDMA2,
  79                 .mwdma_mask     = ATA_MWDMA2,
  80                 .udma_mask      = ATA_UDMA6,
  81         },
  82
  83         /*  2 */ DECLARE_GENERIC_PCI_DEV("SAMURAI",     0),
  84         /*  3 */ DECLARE_GENERIC_PCI_DEV("HT6565",      0),
  85         /*  4 */ DECLARE_GENERIC_PCI_DEV("UM8673F",     IDE_HFLAGS_UMC),
  86         /*  5 */ DECLARE_GENERIC_PCI_DEV("UM8886A",     IDE_HFLAGS_UMC),
  87         /*  6 */ DECLARE_GENERIC_PCI_DEV("UM8886BF",    IDE_HFLAGS_UMC),
  88         /*  7 */ DECLARE_GENERIC_PCI_DEV("HINT_IDE",    0),
  89         /*  8 */ DECLARE_GENERIC_PCI_DEV("VIA_IDE",     IDE_HFLAG_NO_AUTODMA),
  90         /*  9 */ DECLARE_GENERIC_PCI_DEV("OPTI621V",    IDE_HFLAG_NO_AUTODMA),
  91
  92         {       /* 10 */
  93                 .name           = "VIA8237SATA",
  94                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  95                                   IDE_HFLAG_OFF_BOARD,
  96                 .swdma_mask     = ATA_SWDMA2,
  97                 .mwdma_mask     = ATA_MWDMA2,
  98                 .udma_mask      = ATA_UDMA6,
  99         },
 100
 101         /* 11 */ DECLARE_GENERIC_PCI_DEV("Piccolo0102", IDE_HFLAG_NO_AUTODMA),
 102         /* 12 */ DECLARE_GENERIC_PCI_DEV("Piccolo0103", IDE_HFLAG_NO_AUTODMA),
 103         /* 13 */ DECLARE_GENERIC_PCI_DEV("Piccolo0105", IDE_HFLAG_NO_AUTODMA),
 104
 105         {       /* 14 */
 106                 .name           = "Revolution",
 107                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
 108                                   IDE_HFLAG_OFF_BOARD,
 109                 .swdma_mask     = ATA_SWDMA2,
 110                 .mwdma_mask     = ATA_MWDMA2,
 111                 .udma_mask      = ATA_UDMA6,
 112         }
 113 };
 114
 115 /**
 116  *      generic_init_one        -       called when a PIIX is found
 117  *      @dev: the generic device
 118  *      @id: the matching pci id
 119  *
 120  *      Called when the PCI registration layer (or the IDE initialization)
 121  *      finds a device matching our IDE device tables.
 122  */
 123
 124 static int __devinit generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 125 {
 126         ide_pci_device_t *d = &generic_chipsets[id->driver_data];
 127         int ret = -ENODEV;
 128
 129         /* Don't use the generic entry unless instructed to do so */
 130         if (id->driver_data == 0 && ide_generic_all == 0)
 131                         goto out;
 132
 133         switch (dev->vendor) {
 134         case PCI_VENDOR_ID_UMC:
 135                 if (dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
 136                                 !(PCI_FUNC(dev->devfn) & 1))
 137                         goto out; /* UM8886A/BF pair */
 138                 break;
 139         case PCI_VENDOR_ID_OPTI:
 140                 if (dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
 141                                 !(PCI_FUNC(dev->devfn) & 1))
 142                         goto out;
 143                 break;
 144         case PCI_VENDOR_ID_JMICRON:
 145                 if (dev->device != PCI_DEVICE_ID_JMICRON_JMB368 &&
 146                                 PCI_FUNC(dev->devfn) != 1)
 147                         goto out;
 148                 break;
 149         case PCI_VENDOR_ID_NS:
 150                 if (dev->device == PCI_DEVICE_ID_NS_87410 &&
 151                                 (dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
 152                         goto out;
 153                 break;
 154         }
 155
 156         if (dev->vendor != PCI_VENDOR_ID_JMICRON) {
 157                 u16 command;
 158                 pci_read_config_word(dev, PCI_COMMAND, &command);
 159                 if (!(command & PCI_COMMAND_IO)) {
 160                         printk(KERN_INFO "Skipping disabled %s IDE "
 161                                         "controller.\n", d->name);
 162                         goto out;
 163                 }
 164         }
 165         ret = ide_setup_pci_device(dev, d);
 166 out:
 167         return ret;
 168 }
 169
 170 static const struct pci_device_id generic_pci_tbl[] = {
 171         { PCI_VDEVICE(NS,       PCI_DEVICE_ID_NS_87410),                 1 },
 172         { PCI_VDEVICE(PCTECH,   PCI_DEVICE_ID_PCTECH_SAMURAI_IDE),       2 },
 173         { PCI_VDEVICE(HOLTEK,   PCI_DEVICE_ID_HOLTEK_6565),              3 },
 174         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8673F),              4 },
 175         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886A),              5 },
 176         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886BF),             6 },
 177         { PCI_VDEVICE(HINT,     PCI_DEVICE_ID_HINT_VXPROII_IDE),         7 },
 178         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_82C561),               8 },
 179         { PCI_VDEVICE(OPTI,     PCI_DEVICE_ID_OPTI_82C558),              9 },
 180 #ifdef CONFIG_BLK_DEV_IDE_SATA
 181         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_8237_SATA),           10 },
 182 #endif
 183         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO),         11 },
 184         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_1),       12 },
 185         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),       13 },
 186         { PCI_VDEVICE(NETCELL,  PCI_DEVICE_ID_REVOLUTION),              14 },
 187         /*
 188          * Must come last.  If you add entries adjust
 189          * this table and generic_chipsets[] appropriately.
 190          */
 191         { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 0 },
 192         { 0, },
 193 };
 194 MODULE_DEVICE_TABLE(pci, generic_pci_tbl);
 195
 196 static struct pci_driver driver = {
 197         .name           = "PCI_IDE",
 198         .id_table       = generic_pci_tbl,
 199         .probe          = generic_init_one,
 200 };
 201
 202 static int __init generic_ide_init(void)
 203 {
 204         return ide_pci_register_driver(&driver);
 205 }
 206
 207 module_init(generic_ide_init);
 208
 209 MODULE_AUTHOR("Andre Hedrick");
 210 MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
 211 MODULE_LICENSE("GPL");