diff options
Diffstat (limited to 'drivers/ide/generic.c')
| -rw-r--r-- | drivers/ide/generic.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/drivers/ide/generic.c b/drivers/ide/generic.c new file mode 100644 index 00000000000..474f96a7c07 --- /dev/null +++ b/drivers/ide/generic.c @@ -0,0 +1,193 @@ +/* + * 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/pci.h> +#include <linux/ide.h> +#include <linux/init.h> + +#define DRV_NAME "ide_pci_generic" + +static int 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."); + +#define IDE_HFLAGS_UMC (IDE_HFLAG_NO_DMA | IDE_HFLAG_FORCE_LEGACY_IRQS) + +#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[] __devinitdata = { + /* 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_HFLAGS_UMC), + /* 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, + .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, + } +}; + +/** + * 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 "%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), 4 }, + { PCI_VDEVICE(TOSHIBA, PCI_DEVICE_ID_TOSHIBA_PICCOLO_1), 4 }, + { PCI_VDEVICE(TOSHIBA, PCI_DEVICE_ID_TOSHIBA_PICCOLO_2), 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"); |