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/delay.h>
  26 #include <linux/timer.h>
  27 #include <linux/mm.h>
  28 #include <linux/ioport.h>
  29 #include <linux/blkdev.h>
  30 #include <linux/hdreg.h>
  31 #include <linux/pci.h>
  32 #include <linux/ide.h>
  33 #include <linux/init.h>
  34
  35 #include <asm/io.h>
  36
  37 static int ide_generic_all;             /* Set to claim all devices */
  38
  39 /*
  40  * the module_param_named() was added for the modular case
  41  * the __setup() is left as compatibility for existing setups
  42  */
  43 #ifndef MODULE
  44 static int __init ide_generic_all_on(char *unused)
  45 {
  46         ide_generic_all = 1;
  47         printk(KERN_INFO "IDE generic will claim all unknown PCI IDE storage controllers.\n");
  48         return 1;
  49 }
  50 const __setup("all-generic-ide", ide_generic_all_on);
  51 #endif
  52 module_param_named(all_generic_ide, ide_generic_all, bool, 0444);
  53 MODULE_PARM_DESC(all_generic_ide, "IDE generic will claim all unknown PCI IDE storage controllers.");
  54
  55 #define IDE_HFLAGS_UMC (IDE_HFLAG_NO_DMA | IDE_HFLAG_FORCE_LEGACY_IRQS)
  56
  57 #define DECLARE_GENERIC_PCI_DEV(name_str, extra_flags) \
  58         { \
  59                 .name           = name_str, \
  60                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA | \
  61                                   extra_flags | \
  62                                   IDE_HFLAG_BOOTABLE, \
  63                 .swdma_mask     = ATA_SWDMA2, \
  64                 .mwdma_mask     = ATA_MWDMA2, \
  65                 .udma_mask      = ATA_UDMA6, \
  66         }
  67
  68 static const struct ide_port_info generic_chipsets[] __devinitdata = {
  69         /*  0 */ DECLARE_GENERIC_PCI_DEV("Unknown",     0),
  70
  71         {       /* 1 */
  72                 .name           = "NS87410",
  73                 .enablebits     = {{0x43,0x08,0x08}, {0x47,0x08,0x08}},
  74                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  75                                   IDE_HFLAG_BOOTABLE,
  76                 .swdma_mask     = ATA_SWDMA2,
  77                 .mwdma_mask     = ATA_MWDMA2,
  78                 .udma_mask      = ATA_UDMA6,
  79         },
  80
  81         /*  2 */ DECLARE_GENERIC_PCI_DEV("SAMURAI",     0),
  82         /*  3 */ DECLARE_GENERIC_PCI_DEV("HT6565",      0),
  83         /*  4 */ DECLARE_GENERIC_PCI_DEV("UM8673F",     IDE_HFLAGS_UMC),
  84         /*  5 */ DECLARE_GENERIC_PCI_DEV("UM8886A",     IDE_HFLAGS_UMC),
  85         /*  6 */ DECLARE_GENERIC_PCI_DEV("UM8886BF",    IDE_HFLAGS_UMC),
  86         /*  7 */ DECLARE_GENERIC_PCI_DEV("HINT_IDE",    0),
  87         /*  8 */ DECLARE_GENERIC_PCI_DEV("VIA_IDE",     IDE_HFLAG_NO_AUTODMA),
  88         /*  9 */ DECLARE_GENERIC_PCI_DEV("OPTI621V",    IDE_HFLAG_NO_AUTODMA),
  89
  90         {       /* 10 */
  91                 .name           = "VIA8237SATA",
  92                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
  93                                   IDE_HFLAG_OFF_BOARD,
  94                 .swdma_mask     = ATA_SWDMA2,
  95                 .mwdma_mask     = ATA_MWDMA2,
  96                 .udma_mask      = ATA_UDMA6,
  97         },
  98
  99         /* 11 */ DECLARE_GENERIC_PCI_DEV("Piccolo0102", IDE_HFLAG_NO_AUTODMA),
 100         /* 12 */ DECLARE_GENERIC_PCI_DEV("Piccolo0103", IDE_HFLAG_NO_AUTODMA),
 101         /* 13 */ DECLARE_GENERIC_PCI_DEV("Piccolo0105", IDE_HFLAG_NO_AUTODMA),
 102
 103         {       /* 14 */
 104                 .name           = "Revolution",
 105                 .host_flags     = IDE_HFLAG_CLEAR_SIMPLEX |
 106                                   IDE_HFLAG_TRUST_BIOS_FOR_DMA |
 107                                   IDE_HFLAG_OFF_BOARD,
 108                 .swdma_mask     = ATA_SWDMA2,
 109                 .mwdma_mask     = ATA_MWDMA2,
 110                 .udma_mask      = ATA_UDMA6,
 111         }
 112 };
 113
 114 /**
 115  *      generic_init_one        -       called when a PIIX is found
 116  *      @dev: the generic device
 117  *      @id: the matching pci id
 118  *
 119  *      Called when the PCI registration layer (or the IDE initialization)
 120  *      finds a device matching our IDE device tables.
 121  */
 122
 123 static int __devinit generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 124 {
 125         const struct ide_port_info *d = &generic_chipsets[id->driver_data];
 126         int ret = -ENODEV;
 127
 128         /* Don't use the generic entry unless instructed to do so */
 129         if (id->driver_data == 0 && ide_generic_all == 0)
 130                         goto out;
 131
 132         switch (dev->vendor) {
 133         case PCI_VENDOR_ID_UMC:
 134                 if (dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
 135                                 !(PCI_FUNC(dev->devfn) & 1))
 136                         goto out; /* UM8886A/BF pair */
 137                 break;
 138         case PCI_VENDOR_ID_OPTI:
 139                 if (dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
 140                                 !(PCI_FUNC(dev->devfn) & 1))
 141                         goto out;
 142                 break;
 143         case PCI_VENDOR_ID_JMICRON:
 144                 if (dev->device != PCI_DEVICE_ID_JMICRON_JMB368 &&
 145                                 PCI_FUNC(dev->devfn) != 1)
 146                         goto out;
 147                 break;
 148         case PCI_VENDOR_ID_NS:
 149                 if (dev->device == PCI_DEVICE_ID_NS_87410 &&
 150                                 (dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
 151                         goto out;
 152                 break;
 153         }
 154
 155         if (dev->vendor != PCI_VENDOR_ID_JMICRON) {
 156                 u16 command;
 157                 pci_read_config_word(dev, PCI_COMMAND, &command);
 158                 if (!(command & PCI_COMMAND_IO)) {
 159                         printk(KERN_INFO "Skipping disabled %s IDE "
 160                                         "controller.\n", d->name);
 161                         goto out;
 162                 }
 163         }
 164         ret = ide_setup_pci_device(dev, d);
 165 out:
 166         return ret;
 167 }
 168
 169 static const struct pci_device_id generic_pci_tbl[] = {
 170         { PCI_VDEVICE(NS,       PCI_DEVICE_ID_NS_87410),                 1 },
 171         { PCI_VDEVICE(PCTECH,   PCI_DEVICE_ID_PCTECH_SAMURAI_IDE),       2 },
 172         { PCI_VDEVICE(HOLTEK,   PCI_DEVICE_ID_HOLTEK_6565),              3 },
 173         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8673F),              4 },
 174         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886A),              5 },
 175         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886BF),             6 },
 176         { PCI_VDEVICE(HINT,     PCI_DEVICE_ID_HINT_VXPROII_IDE),         7 },
 177         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_82C561),               8 },
 178         { PCI_VDEVICE(OPTI,     PCI_DEVICE_ID_OPTI_82C558),              9 },
 179 #ifdef CONFIG_BLK_DEV_IDE_SATA
 180         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_8237_SATA),           10 },
 181 #endif
 182         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO),         11 },
 183         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_1),       12 },
 184         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),       13 },
 185         { PCI_VDEVICE(NETCELL,  PCI_DEVICE_ID_REVOLUTION),              14 },
 186         /*
 187          * Must come last.  If you add entries adjust
 188          * this table and generic_chipsets[] appropriately.
 189          */
 190         { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 0 },
 191         { 0, },
 192 };
 193 MODULE_DEVICE_TABLE(pci, generic_pci_tbl);
 194
 195 static struct pci_driver driver = {
 196         .name           = "PCI_IDE",
 197         .id_table       = generic_pci_tbl,
 198         .probe          = generic_init_one,
 199 };
 200
 201 static int __init generic_ide_init(void)
 202 {
 203         return ide_pci_register_driver(&driver);
 204 }
 205
 206 module_init(generic_ide_init);
 207
 208 MODULE_AUTHOR("Andre Hedrick");
 209 MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
 210 MODULE_LICENSE("GPL");