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generic.c

/*
 *  linux/drivers/ide/pci/generic.c Version 0.11      December 30, 2002
 *
 *  Copyright (C) 2001-2002   Andre Hedrick <andre@linux-ide.org>
 *  Portions (C) Copyright 2002  Red Hat Inc <alan@redhat.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * For the avoidance of doubt the "preferred form" of this code is one which
 * is in an open non patent encumbered format. Where cryptographic key signing
 * forms part of the process of creating an executable the information
 * including keys needed to generate an equivalently functional executable
 * are deemed to be part of the source code.
 */

#include <linux/types.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/ioport.h>
#include <linux/blkdev.h>
#include <linux/hdreg.h>
#include <linux/pci.h>
#include <linux/ide.h>
#include <linux/init.h>

#include <asm/io.h>

static int ide_generic_all;         /* Set to claim all devices */

/*
 * the module_param_named() was added for the modular case
 * the __setup() is left as compatibility for existing setups
 */
#ifndef MODULE
static int __init ide_generic_all_on(char *unused)
{
      ide_generic_all = 1;
      printk(KERN_INFO "IDE generic will claim all unknown PCI IDE storage controllers.\n");
      return 1;
}
const __setup("all-generic-ide", ide_generic_all_on);
#endif
module_param_named(all_generic_ide, ide_generic_all, bool, 0444);
MODULE_PARM_DESC(all_generic_ide, "IDE generic will claim all unknown PCI IDE storage controllers.");

#define IDE_HFLAGS_UMC (IDE_HFLAG_NO_DMA | IDE_HFLAG_FORCE_LEGACY_IRQS)

#define DECLARE_GENERIC_PCI_DEV(name_str, extra_flags) \
      { \
            .name       = name_str, \
            .host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA | \
                          extra_flags | \
                          IDE_HFLAG_BOOTABLE, \
            .swdma_mask = ATA_SWDMA2, \
            .mwdma_mask = ATA_MWDMA2, \
            .udma_mask  = ATA_UDMA6, \
      }

static const struct ide_port_info generic_chipsets[] __devinitdata = {
      /*  0 */ DECLARE_GENERIC_PCI_DEV("Unknown",     0),

      {     /* 1 */
            .name       = "NS87410",
            .enablebits = {{0x43,0x08,0x08}, {0x47,0x08,0x08}},
            .host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
                          IDE_HFLAG_BOOTABLE,
            .swdma_mask = ATA_SWDMA2,
            .mwdma_mask = ATA_MWDMA2,
            .udma_mask  = ATA_UDMA6,
      },

      /*  2 */ DECLARE_GENERIC_PCI_DEV("SAMURAI",     0),
      /*  3 */ DECLARE_GENERIC_PCI_DEV("HT6565",      0),
      /*  4 */ DECLARE_GENERIC_PCI_DEV("UM8673F",     IDE_HFLAGS_UMC),
      /*  5 */ DECLARE_GENERIC_PCI_DEV("UM8886A",     IDE_HFLAGS_UMC),
      /*  6 */ DECLARE_GENERIC_PCI_DEV("UM8886BF",    IDE_HFLAGS_UMC),
      /*  7 */ DECLARE_GENERIC_PCI_DEV("HINT_IDE",    0),
      /*  8 */ DECLARE_GENERIC_PCI_DEV("VIA_IDE",     IDE_HFLAG_NO_AUTODMA),
      /*  9 */ DECLARE_GENERIC_PCI_DEV("OPTI621V",    IDE_HFLAG_NO_AUTODMA),

      {     /* 10 */
            .name       = "VIA8237SATA",
            .host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
                          IDE_HFLAG_OFF_BOARD,
            .swdma_mask = ATA_SWDMA2,
            .mwdma_mask = ATA_MWDMA2,
            .udma_mask  = ATA_UDMA6,
      },

      /* 11 */ DECLARE_GENERIC_PCI_DEV("Piccolo0102", IDE_HFLAG_NO_AUTODMA),
      /* 12 */ DECLARE_GENERIC_PCI_DEV("Piccolo0103", IDE_HFLAG_NO_AUTODMA),
      /* 13 */ DECLARE_GENERIC_PCI_DEV("Piccolo0105", IDE_HFLAG_NO_AUTODMA),

      {     /* 14 */
            .name       = "Revolution",
            .host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
                          IDE_HFLAG_OFF_BOARD,
            .swdma_mask = ATA_SWDMA2,
            .mwdma_mask = ATA_MWDMA2,
            .udma_mask  = ATA_UDMA6,
      }
};

/**
 *    generic_init_one  -     called when a PIIX is found
 *    @dev: the generic device
 *    @id: the matching pci id
 *
 *    Called when the PCI registration layer (or the IDE initialization)
 *    finds a device matching our IDE device tables.
 */
 
static int __devinit generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
      const struct ide_port_info *d = &generic_chipsets[id->driver_data];
      int ret = -ENODEV;

      /* Don't use the generic entry unless instructed to do so */
      if (id->driver_data == 0 && ide_generic_all == 0)
                  goto out;

      switch (dev->vendor) {
      case PCI_VENDOR_ID_UMC:
            if (dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
                        !(PCI_FUNC(dev->devfn) & 1))
                  goto out; /* UM8886A/BF pair */
            break;
      case PCI_VENDOR_ID_OPTI:
            if (dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
                        !(PCI_FUNC(dev->devfn) & 1))
                  goto out;
            break;
      case PCI_VENDOR_ID_JMICRON:
            if (dev->device != PCI_DEVICE_ID_JMICRON_JMB368 &&
                        PCI_FUNC(dev->devfn) != 1)
                  goto out;
            break;
      case PCI_VENDOR_ID_NS:
            if (dev->device == PCI_DEVICE_ID_NS_87410 &&
                        (dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
                  goto out;
            break;
      }

      if (dev->vendor != PCI_VENDOR_ID_JMICRON) {
            u16 command;
            pci_read_config_word(dev, PCI_COMMAND, &command);
            if (!(command & PCI_COMMAND_IO)) {
                  printk(KERN_INFO "Skipping disabled %s IDE "
                              "controller.\n", d->name);
                  goto out;
            }
      }
      ret = ide_setup_pci_device(dev, d);
out:
      return ret;
}

static const struct pci_device_id generic_pci_tbl[] = {
      { PCI_VDEVICE(NS, PCI_DEVICE_ID_NS_87410),             1 },
      { PCI_VDEVICE(PCTECH,   PCI_DEVICE_ID_PCTECH_SAMURAI_IDE),   2 },
      { PCI_VDEVICE(HOLTEK,   PCI_DEVICE_ID_HOLTEK_6565),          3 },
      { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8673F),          4 },
      { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886A),          5 },
      { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886BF),         6 },
      { PCI_VDEVICE(HINT,     PCI_DEVICE_ID_HINT_VXPROII_IDE),     7 },
      { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_82C561),           8 },
      { PCI_VDEVICE(OPTI,     PCI_DEVICE_ID_OPTI_82C558),          9 },
#ifdef CONFIG_BLK_DEV_IDE_SATA
      { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_8237_SATA),       10 },
#endif
      { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO),           11 },
      { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_1),   12 },
      { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),   13 },
      { PCI_VDEVICE(NETCELL,  PCI_DEVICE_ID_REVOLUTION),          14 },
      /*
       * Must come last.  If you add entries adjust
       * this table and generic_chipsets[] appropriately.
       */
      { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 0 },
      { 0, },
};
MODULE_DEVICE_TABLE(pci, generic_pci_tbl);

static struct pci_driver driver = {
      .name       = "PCI_IDE",
      .id_table   = generic_pci_tbl,
      .probe            = generic_init_one,
};

static int __init generic_ide_init(void)
{
      return ide_pci_register_driver(&driver);
}

module_init(generic_ide_init);

MODULE_AUTHOR("Andre Hedrick");
MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
MODULE_LICENSE("GPL");

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