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9ff6f72f43
linux-next/drivers/ide/pci/generic.c
Bartlomiej Zolnierkiewicz 9ff6f72f43 ide: remove hwif->autodma and drive->autodma 
* hpt34x.c: disable DMA masks for HPT345
  (hwif->autodma is zero so DMA won't be enabled anyway).

* trm290.c: disable IDE_HFLAG_TRUST_BIOS_FOR_DMA flag
  (hwif->autodma is zero so DMA won't be enabled anyway).

* Check noautodma global variable instead of drive->autodma in ide_tune_dma().

  This fixes handling of "ide=nodma" kernel parameter for icside, ide-cris,
  au1xxx-ide, pmac, it821x, jmicron, sgiioc4 and siimage host drivers.

* Remove hwif->autodma (it was not checked by IDE core code anyway) and
  drive->autodma (was set by all host drivers - except HPT345/TRM290 special
  cases - unless "ide=nodma" was used).

While at it:
- remove needless printk() from icside.c
- remove stale FIXME/comment from ide-probe.c
- don't force DMA off if PCI bus-mastering had to be enabled in setup-pci.c
  (this setting was always later over-ridden by host drivers anyway)

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16 22:29:58 +02:00

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7.9 KiB
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/*
* 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;
}
__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.");
static void __devinit init_hwif_generic (ide_hwif_t *hwif)
{
switch(hwif->pci_dev->device) {
case PCI_DEVICE_ID_UMC_UM8673F:
case PCI_DEVICE_ID_UMC_UM8886A:
case PCI_DEVICE_ID_UMC_UM8886BF:
hwif->irq = hwif->channel ? 15 : 14;
break;
default:
break;
}
if (!(hwif->dma_base))
return;
hwif->atapi_dma = 1;
hwif->ultra_mask = 0x7f;
hwif->mwdma_mask = 0x07;
hwif->swdma_mask = 0x07;
}
#if 0
/* Logic to add back later on */
if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE) {
ide_pci_device_t *unknown = unknown_chipset;
init_setup_unknown(dev, unknown);
return 1;
}
return 0;
#endif
static ide_pci_device_t generic_chipsets[] __devinitdata = {
{ /* 0 */
.name = "Unknown",
.init_hwif = init_hwif_generic,
.autodma = AUTODMA,
.bootable = ON_BOARD,
.host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
},{ /* 1 */
.name = "NS87410",
.init_hwif = init_hwif_generic,
.autodma = AUTODMA,
.enablebits = {{0x43,0x08,0x08}, {0x47,0x08,0x08}},
.bootable = ON_BOARD,
.host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
},{ /* 2 */
.name = "SAMURAI",
.init_hwif = init_hwif_generic,
.autodma = AUTODMA,
.bootable = ON_BOARD,
.host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
},{ /* 3 */
.name = "HT6565",
.init_hwif = init_hwif_generic,
.autodma = AUTODMA,
.bootable = ON_BOARD,
.host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
},{ /* 4 */
.name = "UM8673F",
.init_hwif = init_hwif_generic,
.autodma = NODMA,
.bootable = ON_BOARD,
.host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
},{ /* 5 */
.name = "UM8886A",
.init_hwif = init_hwif_generic,
.autodma = NODMA,
.bootable = ON_BOARD,
.host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
},{ /* 6 */
.name = "UM8886BF",
.init_hwif = init_hwif_generic,
.autodma = NODMA,
.bootable = ON_BOARD,
.host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
},{ /* 7 */
.name = "HINT_IDE",
.init_hwif = init_hwif_generic,
.autodma = AUTODMA,
.bootable = ON_BOARD,
.host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
},{ /* 8 */
.name = "VIA_IDE",
.init_hwif = init_hwif_generic,
.autodma = NOAUTODMA,
.bootable = ON_BOARD,
.host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
},{ /* 9 */
.name = "OPTI621V",
.init_hwif = init_hwif_generic,
.autodma = NOAUTODMA,
.bootable = ON_BOARD,
.host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
},{ /* 10 */
.name = "VIA8237SATA",
.init_hwif = init_hwif_generic,
.autodma = AUTODMA,
.bootable = OFF_BOARD,
.host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
},{ /* 11 */
.name = "Piccolo0102",
.init_hwif = init_hwif_generic,
.autodma = NOAUTODMA,
.bootable = ON_BOARD,
.host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
},{ /* 12 */
.name = "Piccolo0103",
.init_hwif = init_hwif_generic,
.autodma = NOAUTODMA,
.bootable = ON_BOARD,
.host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
},{ /* 13 */
.name = "Piccolo0105",
.init_hwif = init_hwif_generic,
.autodma = NOAUTODMA,
.bootable = ON_BOARD,
.host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
},{ /* 14 */
.name = "Revolution",
.init_hwif = init_hwif_generic,
.autodma = AUTODMA,
.bootable = OFF_BOARD,
.host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
}
};
/**
* 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)
{
ide_pci_device_t *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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