diff options
Diffstat (limited to 'drivers/ide/it821x.c')
| -rw-r--r-- | drivers/ide/it821x.c | 715 |
1 files changed, 715 insertions, 0 deletions
diff --git a/drivers/ide/it821x.c b/drivers/ide/it821x.c new file mode 100644 index 00000000..2e3169f2 --- /dev/null +++ b/drivers/ide/it821x.c @@ -0,0 +1,715 @@ +/* + * Copyright (C) 2004 Red Hat + * Copyright (C) 2007 Bartlomiej Zolnierkiewicz + * + * May be copied or modified under the terms of the GNU General Public License + * Based in part on the ITE vendor provided SCSI driver. + * + * Documentation: + * Datasheet is freely available, some other documents under NDA. + * + * The ITE8212 isn't exactly a standard IDE controller. It has two + * modes. In pass through mode then it is an IDE controller. In its smart + * mode its actually quite a capable hardware raid controller disguised + * as an IDE controller. Smart mode only understands DMA read/write and + * identify, none of the fancier commands apply. The IT8211 is identical + * in other respects but lacks the raid mode. + * + * Errata: + * o Rev 0x10 also requires master/slave hold the same DMA timings and + * cannot do ATAPI MWDMA. + * o The identify data for raid volumes lacks CHS info (technically ok) + * but also fails to set the LBA28 and other bits. We fix these in + * the IDE probe quirk code. + * o If you write LBA48 sized I/O's (ie > 256 sector) in smart mode + * raid then the controller firmware dies + * o Smart mode without RAID doesn't clear all the necessary identify + * bits to reduce the command set to the one used + * + * This has a few impacts on the driver + * - In pass through mode we do all the work you would expect + * - In smart mode the clocking set up is done by the controller generally + * but we must watch the other limits and filter. + * - There are a few extra vendor commands that actually talk to the + * controller but only work PIO with no IRQ. + * + * Vendor areas of the identify block in smart mode are used for the + * timing and policy set up. Each HDD in raid mode also has a serial + * block on the disk. The hardware extra commands are get/set chip status, + * rebuild, get rebuild status. + * + * In Linux the driver supports pass through mode as if the device was + * just another IDE controller. If the smart mode is running then + * volumes are managed by the controller firmware and each IDE "disk" + * is a raid volume. Even more cute - the controller can do automated + * hotplug and rebuild. + * + * The pass through controller itself is a little demented. It has a + * flaw that it has a single set of PIO/MWDMA timings per channel so + * non UDMA devices restrict each others performance. It also has a + * single clock source per channel so mixed UDMA100/133 performance + * isn't perfect and we have to pick a clock. Thankfully none of this + * matters in smart mode. ATAPI DMA is not currently supported. + * + * It seems the smart mode is a win for RAID1/RAID10 but otherwise not. + * + * TODO + * - ATAPI UDMA is ok but not MWDMA it seems + * - RAID configuration ioctls + * - Move to libata once it grows up + */ + +#include <linux/types.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/pci.h> +#include <linux/ide.h> +#include <linux/init.h> + +#define DRV_NAME "it821x" + +#define QUIRK_VORTEX86 1 + +struct it821x_dev +{ + unsigned int smart:1, /* Are we in smart raid mode */ + timing10:1; /* Rev 0x10 */ + u8 clock_mode; /* 0, ATA_50 or ATA_66 */ + u8 want[2][2]; /* Mode/Pri log for master slave */ + /* We need these for switching the clock when DMA goes on/off + The high byte is the 66Mhz timing */ + u16 pio[2]; /* Cached PIO values */ + u16 mwdma[2]; /* Cached MWDMA values */ + u16 udma[2]; /* Cached UDMA values (per drive) */ + u16 quirks; +}; + +#define ATA_66 0 +#define ATA_50 1 +#define ATA_ANY 2 + +#define UDMA_OFF 0 +#define MWDMA_OFF 0 + +/* + * We allow users to force the card into non raid mode without + * flashing the alternative BIOS. This is also necessary right now + * for embedded platforms that cannot run a PC BIOS but are using this + * device. + */ + +static int it8212_noraid; + +/** + * it821x_program - program the PIO/MWDMA registers + * @drive: drive to tune + * @timing: timing info + * + * Program the PIO/MWDMA timing for this channel according to the + * current clock. + */ + +static void it821x_program(ide_drive_t *drive, u16 timing) +{ + ide_hwif_t *hwif = drive->hwif; + struct pci_dev *dev = to_pci_dev(hwif->dev); + struct it821x_dev *itdev = ide_get_hwifdata(hwif); + int channel = hwif->channel; + u8 conf; + + /* Program PIO/MWDMA timing bits */ + if(itdev->clock_mode == ATA_66) + conf = timing >> 8; + else + conf = timing & 0xFF; + + pci_write_config_byte(dev, 0x54 + 4 * channel, conf); +} + +/** + * it821x_program_udma - program the UDMA registers + * @drive: drive to tune + * @timing: timing info + * + * Program the UDMA timing for this drive according to the + * current clock. + */ + +static void it821x_program_udma(ide_drive_t *drive, u16 timing) +{ + ide_hwif_t *hwif = drive->hwif; + struct pci_dev *dev = to_pci_dev(hwif->dev); + struct it821x_dev *itdev = ide_get_hwifdata(hwif); + int channel = hwif->channel; + u8 unit = drive->dn & 1, conf; + + /* Program UDMA timing bits */ + if(itdev->clock_mode == ATA_66) + conf = timing >> 8; + else + conf = timing & 0xFF; + + if (itdev->timing10 == 0) + pci_write_config_byte(dev, 0x56 + 4 * channel + unit, conf); + else { + pci_write_config_byte(dev, 0x56 + 4 * channel, conf); + pci_write_config_byte(dev, 0x56 + 4 * channel + 1, conf); + } +} + +/** + * it821x_clock_strategy + * @drive: drive to set up + * + * Select between the 50 and 66Mhz base clocks to get the best + * results for this interface. + */ + +static void it821x_clock_strategy(ide_drive_t *drive) +{ + ide_hwif_t *hwif = drive->hwif; + struct pci_dev *dev = to_pci_dev(hwif->dev); + struct it821x_dev *itdev = ide_get_hwifdata(hwif); + ide_drive_t *pair = ide_get_pair_dev(drive); + int clock, altclock, sel = 0; + u8 unit = drive->dn & 1, v; + + if(itdev->want[0][0] > itdev->want[1][0]) { + clock = itdev->want[0][1]; + altclock = itdev->want[1][1]; + } else { + clock = itdev->want[1][1]; + altclock = itdev->want[0][1]; + } + + /* + * if both clocks can be used for the mode with the higher priority + * use the clock needed by the mode with the lower priority + */ + if (clock == ATA_ANY) + clock = altclock; + + /* Nobody cares - keep the same clock */ + if(clock == ATA_ANY) + return; + /* No change */ + if(clock == itdev->clock_mode) + return; + + /* Load this into the controller ? */ + if(clock == ATA_66) + itdev->clock_mode = ATA_66; + else { + itdev->clock_mode = ATA_50; + sel = 1; + } + + pci_read_config_byte(dev, 0x50, &v); + v &= ~(1 << (1 + hwif->channel)); + v |= sel << (1 + hwif->channel); + pci_write_config_byte(dev, 0x50, v); + + /* + * Reprogram the UDMA/PIO of the pair drive for the switch + * MWDMA will be dealt with by the dma switcher + */ + if(pair && itdev->udma[1-unit] != UDMA_OFF) { + it821x_program_udma(pair, itdev->udma[1-unit]); + it821x_program(pair, itdev->pio[1-unit]); + } + /* + * Reprogram the UDMA/PIO of our drive for the switch. + * MWDMA will be dealt with by the dma switcher + */ + if(itdev->udma[unit] != UDMA_OFF) { + it821x_program_udma(drive, itdev->udma[unit]); + it821x_program(drive, itdev->pio[unit]); + } +} + +/** + * it821x_set_pio_mode - set host controller for PIO mode + * @hwif: port + * @drive: drive + * + * Tune the host to the desired PIO mode taking into the consideration + * the maximum PIO mode supported by the other device on the cable. + */ + +static void it821x_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive) +{ + struct it821x_dev *itdev = ide_get_hwifdata(hwif); + ide_drive_t *pair = ide_get_pair_dev(drive); + const u8 pio = drive->pio_mode - XFER_PIO_0; + u8 unit = drive->dn & 1, set_pio = pio; + + /* Spec says 89 ref driver uses 88 */ + static u16 pio_timings[]= { 0xAA88, 0xA382, 0xA181, 0x3332, 0x3121 }; + static u8 pio_want[] = { ATA_66, ATA_66, ATA_66, ATA_66, ATA_ANY }; + + /* + * Compute the best PIO mode we can for a given device. We must + * pick a speed that does not cause problems with the other device + * on the cable. + */ + if (pair) { + u8 pair_pio = pair->pio_mode - XFER_PIO_0; + /* trim PIO to the slowest of the master/slave */ + if (pair_pio < set_pio) + set_pio = pair_pio; + } + + /* We prefer 66Mhz clock for PIO 0-3, don't care for PIO4 */ + itdev->want[unit][1] = pio_want[set_pio]; + itdev->want[unit][0] = 1; /* PIO is lowest priority */ + itdev->pio[unit] = pio_timings[set_pio]; + it821x_clock_strategy(drive); + it821x_program(drive, itdev->pio[unit]); +} + +/** + * it821x_tune_mwdma - tune a channel for MWDMA + * @drive: drive to set up + * @mode_wanted: the target operating mode + * + * Load the timing settings for this device mode into the + * controller when doing MWDMA in pass through mode. The caller + * must manage the whole lack of per device MWDMA/PIO timings and + * the shared MWDMA/PIO timing register. + */ + +static void it821x_tune_mwdma(ide_drive_t *drive, u8 mode_wanted) +{ + ide_hwif_t *hwif = drive->hwif; + struct pci_dev *dev = to_pci_dev(hwif->dev); + struct it821x_dev *itdev = (void *)ide_get_hwifdata(hwif); + u8 unit = drive->dn & 1, channel = hwif->channel, conf; + + static u16 dma[] = { 0x8866, 0x3222, 0x3121 }; + static u8 mwdma_want[] = { ATA_ANY, ATA_66, ATA_ANY }; + + itdev->want[unit][1] = mwdma_want[mode_wanted]; + itdev->want[unit][0] = 2; /* MWDMA is low priority */ + itdev->mwdma[unit] = dma[mode_wanted]; + itdev->udma[unit] = UDMA_OFF; + + /* UDMA bits off - Revision 0x10 do them in pairs */ + pci_read_config_byte(dev, 0x50, &conf); + if (itdev->timing10) + conf |= channel ? 0x60: 0x18; + else + conf |= 1 << (3 + 2 * channel + unit); + pci_write_config_byte(dev, 0x50, conf); + + it821x_clock_strategy(drive); + /* FIXME: do we need to program this ? */ + /* it821x_program(drive, itdev->mwdma[unit]); */ +} + +/** + * it821x_tune_udma - tune a channel for UDMA + * @drive: drive to set up + * @mode_wanted: the target operating mode + * + * Load the timing settings for this device mode into the + * controller when doing UDMA modes in pass through. + */ + +static void it821x_tune_udma(ide_drive_t *drive, u8 mode_wanted) +{ + ide_hwif_t *hwif = drive->hwif; + struct pci_dev *dev = to_pci_dev(hwif->dev); + struct it821x_dev *itdev = ide_get_hwifdata(hwif); + u8 unit = drive->dn & 1, channel = hwif->channel, conf; + + static u16 udma[] = { 0x4433, 0x4231, 0x3121, 0x2121, 0x1111, 0x2211, 0x1111 }; + static u8 udma_want[] = { ATA_ANY, ATA_50, ATA_ANY, ATA_66, ATA_66, ATA_50, ATA_66 }; + + itdev->want[unit][1] = udma_want[mode_wanted]; + itdev->want[unit][0] = 3; /* UDMA is high priority */ + itdev->mwdma[unit] = MWDMA_OFF; + itdev->udma[unit] = udma[mode_wanted]; + if(mode_wanted >= 5) + itdev->udma[unit] |= 0x8080; /* UDMA 5/6 select on */ + + /* UDMA on. Again revision 0x10 must do the pair */ + pci_read_config_byte(dev, 0x50, &conf); + if (itdev->timing10) + conf &= channel ? 0x9F: 0xE7; + else + conf &= ~ (1 << (3 + 2 * channel + unit)); + pci_write_config_byte(dev, 0x50, conf); + + it821x_clock_strategy(drive); + it821x_program_udma(drive, itdev->udma[unit]); + +} + +/** + * it821x_dma_read - DMA hook + * @drive: drive for DMA + * + * The IT821x has a single timing register for MWDMA and for PIO + * operations. As we flip back and forth we have to reload the + * clock. In addition the rev 0x10 device only works if the same + * timing value is loaded into the master and slave UDMA clock + * so we must also reload that. + * + * FIXME: we could figure out in advance if we need to do reloads + */ + +static void it821x_dma_start(ide_drive_t *drive) +{ + ide_hwif_t *hwif = drive->hwif; + struct it821x_dev *itdev = ide_get_hwifdata(hwif); + u8 unit = drive->dn & 1; + + if(itdev->mwdma[unit] != MWDMA_OFF) + it821x_program(drive, itdev->mwdma[unit]); + else if(itdev->udma[unit] != UDMA_OFF && itdev->timing10) + it821x_program_udma(drive, itdev->udma[unit]); + ide_dma_start(drive); +} + +/** + * it821x_dma_write - DMA hook + * @drive: drive for DMA stop + * + * The IT821x has a single timing register for MWDMA and for PIO + * operations. As we flip back and forth we have to reload the + * clock. + */ + +static int it821x_dma_end(ide_drive_t *drive) +{ + ide_hwif_t *hwif = drive->hwif; + struct it821x_dev *itdev = ide_get_hwifdata(hwif); + int ret = ide_dma_end(drive); + u8 unit = drive->dn & 1; + + if(itdev->mwdma[unit] != MWDMA_OFF) + it821x_program(drive, itdev->pio[unit]); + return ret; +} + +/** + * it821x_set_dma_mode - set host controller for DMA mode + * @hwif: port + * @drive: drive + * + * Tune the ITE chipset for the desired DMA mode. + */ + +static void it821x_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive) +{ + const u8 speed = drive->dma_mode; + + /* + * MWDMA tuning is really hard because our MWDMA and PIO + * timings are kept in the same place. We can switch in the + * host dma on/off callbacks. + */ + if (speed >= XFER_UDMA_0 && speed <= XFER_UDMA_6) + it821x_tune_udma(drive, speed - XFER_UDMA_0); + else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2) + it821x_tune_mwdma(drive, speed - XFER_MW_DMA_0); +} + +/** + * it821x_cable_detect - cable detection + * @hwif: interface to check + * + * Check for the presence of an ATA66 capable cable on the + * interface. Problematic as it seems some cards don't have + * the needed logic onboard. + */ + +static u8 it821x_cable_detect(ide_hwif_t *hwif) +{ + /* The reference driver also only does disk side */ + return ATA_CBL_PATA80; +} + +/** + * it821x_quirkproc - post init callback + * @drive: drive + * + * This callback is run after the drive has been probed but + * before anything gets attached. It allows drivers to do any + * final tuning that is needed, or fixups to work around bugs. + */ + +static void it821x_quirkproc(ide_drive_t *drive) +{ + struct it821x_dev *itdev = ide_get_hwifdata(drive->hwif); + u16 *id = drive->id; + + if (!itdev->smart) { + /* + * If we are in pass through mode then not much + * needs to be done, but we do bother to clear the + * IRQ mask as we may well be in PIO (eg rev 0x10) + * for now and we know unmasking is safe on this chipset. + */ + drive->dev_flags |= IDE_DFLAG_UNMASK; + } else { + /* + * Perform fixups on smart mode. We need to "lose" some + * capabilities the firmware lacks but does not filter, and + * also patch up some capability bits that it forgets to set + * in RAID mode. + */ + + /* Check for RAID v native */ + if (strstr((char *)&id[ATA_ID_PROD], + "Integrated Technology Express")) { + /* In raid mode the ident block is slightly buggy + We need to set the bits so that the IDE layer knows + LBA28. LBA48 and DMA ar valid */ + id[ATA_ID_CAPABILITY] |= (3 << 8); /* LBA28, DMA */ + id[ATA_ID_COMMAND_SET_2] |= 0x0400; /* LBA48 valid */ + id[ATA_ID_CFS_ENABLE_2] |= 0x0400; /* LBA48 on */ + /* Reporting logic */ + printk(KERN_INFO "%s: IT8212 %sRAID %d volume", + drive->name, id[147] ? "Bootable " : "", + id[ATA_ID_CSFO]); + if (id[ATA_ID_CSFO] != 1) + printk(KERN_CONT "(%dK stripe)", id[146]); + printk(KERN_CONT ".\n"); + } else { + /* Non RAID volume. Fixups to stop the core code + doing unsupported things */ + id[ATA_ID_FIELD_VALID] &= 3; + id[ATA_ID_QUEUE_DEPTH] = 0; + id[ATA_ID_COMMAND_SET_1] = 0; + id[ATA_ID_COMMAND_SET_2] &= 0xC400; + id[ATA_ID_CFSSE] &= 0xC000; + id[ATA_ID_CFS_ENABLE_1] = 0; + id[ATA_ID_CFS_ENABLE_2] &= 0xC400; + id[ATA_ID_CSF_DEFAULT] &= 0xC000; + id[127] = 0; + id[ATA_ID_DLF] = 0; + id[ATA_ID_CSFO] = 0; + id[ATA_ID_CFA_POWER] = 0; + printk(KERN_INFO "%s: Performing identify fixups.\n", + drive->name); + } + + /* + * Set MWDMA0 mode as enabled/support - just to tell + * IDE core that DMA is supported (it821x hardware + * takes care of DMA mode programming). + */ + if (ata_id_has_dma(id)) { + id[ATA_ID_MWDMA_MODES] |= 0x0101; + drive->current_speed = XFER_MW_DMA_0; + } + } + +} + +static struct ide_dma_ops it821x_pass_through_dma_ops = { + .dma_host_set = ide_dma_host_set, + .dma_setup = ide_dma_setup, + .dma_start = it821x_dma_start, + .dma_end = it821x_dma_end, + .dma_test_irq = ide_dma_test_irq, + .dma_lost_irq = ide_dma_lost_irq, + .dma_timer_expiry = ide_dma_sff_timer_expiry, + .dma_sff_read_status = ide_dma_sff_read_status, +}; + +/** + * init_hwif_it821x - set up hwif structs + * @hwif: interface to set up + * + * We do the basic set up of the interface structure. The IT8212 + * requires several custom handlers so we override the default + * ide DMA handlers appropriately + */ + +static void __devinit init_hwif_it821x(ide_hwif_t *hwif) +{ + struct pci_dev *dev = to_pci_dev(hwif->dev); + struct ide_host *host = pci_get_drvdata(dev); + struct it821x_dev *itdevs = host->host_priv; + struct it821x_dev *idev = itdevs + hwif->channel; + u8 conf; + + ide_set_hwifdata(hwif, idev); + + pci_read_config_byte(dev, 0x50, &conf); + if (conf & 1) { + idev->smart = 1; + hwif->host_flags |= IDE_HFLAG_NO_ATAPI_DMA; + /* Long I/O's although allowed in LBA48 space cause the + onboard firmware to enter the twighlight zone */ + hwif->rqsize = 256; + } + + /* Pull the current clocks from 0x50 also */ + if (conf & (1 << (1 + hwif->channel))) + idev->clock_mode = ATA_50; + else + idev->clock_mode = ATA_66; + + idev->want[0][1] = ATA_ANY; + idev->want[1][1] = ATA_ANY; + + /* + * Not in the docs but according to the reference driver + * this is necessary. + */ + + if (dev->revision == 0x10) { + idev->timing10 = 1; + hwif->host_flags |= IDE_HFLAG_NO_ATAPI_DMA; + if (idev->smart == 0) + printk(KERN_WARNING DRV_NAME " %s: revision 0x10, " + "workarounds activated\n", pci_name(dev)); + } + + if (idev->smart == 0) { + /* MWDMA/PIO clock switching for pass through mode */ + hwif->dma_ops = &it821x_pass_through_dma_ops; + } else + hwif->host_flags |= IDE_HFLAG_NO_SET_MODE; + + if (hwif->dma_base == 0) + return; + + hwif->ultra_mask = ATA_UDMA6; + hwif->mwdma_mask = ATA_MWDMA2; + + /* Vortex86SX quirk: prevent Ultra-DMA mode to fix BadCRC issue */ + if (idev->quirks & QUIRK_VORTEX86) { + if (dev->revision == 0x11) + hwif->ultra_mask = 0; + } +} + +static void it8212_disable_raid(struct pci_dev *dev) +{ + /* Reset local CPU, and set BIOS not ready */ + pci_write_config_byte(dev, 0x5E, 0x01); + + /* Set to bypass mode, and reset PCI bus */ + pci_write_config_byte(dev, 0x50, 0x00); + pci_write_config_word(dev, PCI_COMMAND, + PCI_COMMAND_PARITY | PCI_COMMAND_IO | + PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); + pci_write_config_word(dev, 0x40, 0xA0F3); + + pci_write_config_dword(dev,0x4C, 0x02040204); + pci_write_config_byte(dev, 0x42, 0x36); + pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x20); +} + +static int init_chipset_it821x(struct pci_dev *dev) +{ + u8 conf; + static char *mode[2] = { "pass through", "smart" }; + + /* Force the card into bypass mode if so requested */ + if (it8212_noraid) { + printk(KERN_INFO DRV_NAME " %s: forcing bypass mode\n", + pci_name(dev)); + it8212_disable_raid(dev); + } + pci_read_config_byte(dev, 0x50, &conf); + printk(KERN_INFO DRV_NAME " %s: controller in %s mode\n", + pci_name(dev), mode[conf & 1]); + return 0; +} + +static const struct ide_port_ops it821x_port_ops = { + /* it821x_set_{pio,dma}_mode() are only used in pass-through mode */ + .set_pio_mode = it821x_set_pio_mode, + .set_dma_mode = it821x_set_dma_mode, + .quirkproc = it821x_quirkproc, + .cable_detect = it821x_cable_detect, +}; + +static const struct ide_port_info it821x_chipset __devinitdata = { + .name = DRV_NAME, + .init_chipset = init_chipset_it821x, + .init_hwif = init_hwif_it821x, + .port_ops = &it821x_port_ops, + .pio_mask = ATA_PIO4, +}; + +/** + * it821x_init_one - pci layer discovery entry + * @dev: PCI device + * @id: ident table entry + * + * Called by the PCI code when it finds an ITE821x controller. + * We then use the IDE PCI generic helper to do most of the work. + */ + +static int __devinit it821x_init_one(struct pci_dev *dev, const struct pci_device_id *id) +{ + struct it821x_dev *itdevs; + int rc; + + itdevs = kzalloc(2 * sizeof(*itdevs), GFP_KERNEL); + if (itdevs == NULL) { + printk(KERN_ERR DRV_NAME " %s: out of memory\n", pci_name(dev)); + return -ENOMEM; + } + + itdevs->quirks = id->driver_data; + + rc = ide_pci_init_one(dev, &it821x_chipset, itdevs); + if (rc) + kfree(itdevs); + + return rc; +} + +static void __devexit it821x_remove(struct pci_dev *dev) +{ + struct ide_host *host = pci_get_drvdata(dev); + struct it821x_dev *itdevs = host->host_priv; + + ide_pci_remove(dev); + kfree(itdevs); +} + +static const struct pci_device_id it821x_pci_tbl[] = { + { PCI_VDEVICE(ITE, PCI_DEVICE_ID_ITE_8211), 0 }, + { PCI_VDEVICE(ITE, PCI_DEVICE_ID_ITE_8212), 0 }, + { PCI_VDEVICE(RDC, PCI_DEVICE_ID_RDC_D1010), QUIRK_VORTEX86 }, + { 0, }, +}; + +MODULE_DEVICE_TABLE(pci, it821x_pci_tbl); + +static struct pci_driver it821x_pci_driver = { + .name = "ITE821x IDE", + .id_table = it821x_pci_tbl, + .probe = it821x_init_one, + .remove = __devexit_p(it821x_remove), + .suspend = ide_pci_suspend, + .resume = ide_pci_resume, +}; + +static int __init it821x_ide_init(void) +{ + return ide_pci_register_driver(&it821x_pci_driver); +} + +static void __exit it821x_ide_exit(void) +{ + pci_unregister_driver(&it821x_pci_driver); +} + +module_init(it821x_ide_init); +module_exit(it821x_ide_exit); + +module_param_named(noraid, it8212_noraid, int, S_IRUGO); +MODULE_PARM_DESC(noraid, "Force card into bypass mode"); + +MODULE_AUTHOR("Alan Cox"); +MODULE_DESCRIPTION("PCI driver module for the ITE 821x"); +MODULE_LICENSE("GPL"); |