ide-pci-generic.c

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/*
 *  Copyright (C) 2001-2002 Andre Hedrick <[email protected]>
 *  Portions (C) Copyright 2002  Red Hat Inc
 *
 * 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/pci.h>
#include <linux/ide.h>
#include <linux/init.h>

#define DRV_NAME "ide_pci_generic"

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

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.");

static void netcell_quirkproc(ide_drive_t *drive)
{
    /* mark words 85-87 as valid */
    drive->id[ATA_ID_CSF_DEFAULT] |= 0x4000;
}

static const struct ide_port_ops netcell_port_ops = {
    .quirkproc      = netcell_quirkproc,
};

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

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

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

    /*  2: SAMURAI / HT6565 / HINT_IDE */
    DECLARE_GENERIC_PCI_DEV(0),
    /*  3: UM8673F / UM8886A / UM8886BF */
    DECLARE_GENERIC_PCI_DEV(IDE_HFLAG_NO_DMA),
    /*  4: VIA_IDE / OPTI621V / Piccolo010{2,3,5} */
    DECLARE_GENERIC_PCI_DEV(IDE_HFLAG_NO_AUTODMA),

    {   /* 5: VIA8237SATA */
        .name       = DRV_NAME,
        .host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
                  IDE_HFLAG_OFF_BOARD,
        .swdma_mask = ATA_SWDMA2,
        .mwdma_mask = ATA_MWDMA2,
        .udma_mask  = ATA_UDMA6,
    },

    {   /* 6: Revolution */
        .name       = DRV_NAME,
        .port_ops   = &netcell_port_ops,
        .host_flags = IDE_HFLAG_CLEAR_SIMPLEX |
                  IDE_HFLAG_TRUST_BIOS_FOR_DMA |
                  IDE_HFLAG_OFF_BOARD,
        .swdma_mask = ATA_SWDMA2,
        .mwdma_mask = ATA_MWDMA2,
        .udma_mask  = ATA_UDMA6,
    }
};

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 "%s %s: skipping disabled "
                "controller\n", d->name, pci_name(dev));
            goto out;
        }
    }
    ret = ide_pci_init_one(dev, d, NULL);
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),      2 },
    { PCI_VDEVICE(UMC,  PCI_DEVICE_ID_UMC_UM8673F),      3 },
    { PCI_VDEVICE(UMC,  PCI_DEVICE_ID_UMC_UM8886A),      3 },
    { PCI_VDEVICE(UMC,  PCI_DEVICE_ID_UMC_UM8886BF),         3 },
    { PCI_VDEVICE(HINT, PCI_DEVICE_ID_HINT_VXPROII_IDE),     2 },
    { PCI_VDEVICE(VIA,  PCI_DEVICE_ID_VIA_82C561),       4 },
    { PCI_VDEVICE(OPTI, PCI_DEVICE_ID_OPTI_82C558),      4 },
#ifdef CONFIG_BLK_DEV_IDE_SATA
    { PCI_VDEVICE(VIA,  PCI_DEVICE_ID_VIA_8237_SATA),        5 },
#endif
    { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_1),    4 },
    { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),    4 },
    { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_3),    4 },
    { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_5),    4 },
    { PCI_VDEVICE(NETCELL,  PCI_DEVICE_ID_REVOLUTION),       6 },
    /*
     * 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 generic_pci_driver = {
    .name       = "PCI_IDE",
    .id_table   = generic_pci_tbl,
    .probe      = generic_init_one,
    .remove     = ide_pci_remove,
    .suspend    = ide_pci_suspend,
    .resume     = ide_pci_resume,
};

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

static void __exit generic_ide_exit(void)
{
    pci_unregister_driver(&generic_pci_driver);
}

module_init(generic_ide_init);
module_exit(generic_ide_exit);

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