diff options
Diffstat (limited to 'drivers/ata/ata_generic.c')
| -rw-r--r-- | drivers/ata/ata_generic.c | 252 |
1 files changed, 127 insertions, 125 deletions
diff --git a/drivers/ata/ata_generic.c b/drivers/ata/ata_generic.c index 908751d27e7..9ff545ce8da 100644 --- a/drivers/ata/ata_generic.c +++ b/drivers/ata/ata_generic.c @@ -1,6 +1,6 @@ /* * ata_generic.c - Generic PATA/SATA controller driver. - * Copyright 2005 Red Hat Inc <alan@redhat.com>, all rights reserved. + * Copyright 2005 Red Hat Inc, all rights reserved. * * Elements from ide/pci/generic.c * Copyright (C) 2001-2002 Andre Hedrick <andre@linux-ide.org> @@ -19,51 +19,28 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> -#include <linux/init.h> #include <linux/blkdev.h> #include <linux/delay.h> #include <scsi/scsi_host.h> #include <linux/libata.h> #define DRV_NAME "ata_generic" -#define DRV_VERSION "0.2.10" +#define DRV_VERSION "0.2.15" /* * A generic parallel ATA driver using libata */ -/** - * generic_pre_reset - probe begin - * @ap: ATA port - * - * Set up cable type and use generic probe init - */ - -static int generic_pre_reset(struct ata_port *ap) -{ - ap->cbl = ATA_CBL_PATA80; - return ata_std_prereset(ap); -} - - -/** - * generic_error_handler - Probe specified port on PATA host controller - * @ap: Port to probe - * @classes: - * - * LOCKING: - * None (inherited from caller). - */ - - -static void generic_error_handler(struct ata_port *ap) -{ - ata_bmdma_drive_eh(ap, generic_pre_reset, ata_std_softreset, NULL, ata_std_postreset); -} +enum { + ATA_GEN_CLASS_MATCH = (1 << 0), + ATA_GEN_FORCE_DMA = (1 << 1), + ATA_GEN_INTEL_IDER = (1 << 2), +}; /** * generic_set_mode - mode setting - * @ap: interface to set up + * @link: link to set up + * @unused: returned device on error * * Use a non standard set_mode function. We don't want to be tuned. * The BIOS configured everything. Our job is not to fiddle. We @@ -71,92 +48,109 @@ static void generic_error_handler(struct ata_port *ap) * and respect them. */ -static void generic_set_mode(struct ata_port *ap) +static int generic_set_mode(struct ata_link *link, struct ata_device **unused) { + struct ata_port *ap = link->ap; + const struct pci_device_id *id = ap->host->private_data; int dma_enabled = 0; - int i; + struct ata_device *dev; - /* Bits 5 and 6 indicate if DMA is active on master/slave */ - if (ap->ioaddr.bmdma_addr) - dma_enabled = inb(ap->ioaddr.bmdma_addr + ATA_DMA_CMD); + if (id->driver_data & ATA_GEN_FORCE_DMA) { + dma_enabled = 0xff; + } else if (ap->ioaddr.bmdma_addr) { + /* Bits 5 and 6 indicate if DMA is active on master/slave */ + dma_enabled = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); + } - for (i = 0; i < ATA_MAX_DEVICES; i++) { - struct ata_device *dev = &ap->device[i]; - if (ata_dev_enabled(dev)) { - /* We don't really care */ - dev->pio_mode = XFER_PIO_0; - dev->dma_mode = XFER_MW_DMA_0; - /* We do need the right mode information for DMA or PIO - and this comes from the current configuration flags */ - if (dma_enabled & (1 << (5 + i))) { - dev->xfer_mode = XFER_MW_DMA_0; - dev->xfer_shift = ATA_SHIFT_MWDMA; - dev->flags &= ~ATA_DFLAG_PIO; - } else { - dev->xfer_mode = XFER_PIO_0; - dev->xfer_shift = ATA_SHIFT_PIO; - dev->flags |= ATA_DFLAG_PIO; + ata_for_each_dev(dev, link, ENABLED) { + /* We don't really care */ + dev->pio_mode = XFER_PIO_0; + dev->dma_mode = XFER_MW_DMA_0; + /* We do need the right mode information for DMA or PIO + and this comes from the current configuration flags */ + if (dma_enabled & (1 << (5 + dev->devno))) { + unsigned int xfer_mask = ata_id_xfermask(dev->id); + const char *name; + + if (xfer_mask & (ATA_MASK_MWDMA | ATA_MASK_UDMA)) + name = ata_mode_string(xfer_mask); + else { + /* SWDMA perhaps? */ + name = "DMA"; + xfer_mask |= ata_xfer_mode2mask(XFER_MW_DMA_0); } + + ata_dev_info(dev, "configured for %s\n", name); + + dev->xfer_mode = ata_xfer_mask2mode(xfer_mask); + dev->xfer_shift = ata_xfer_mode2shift(dev->xfer_mode); + dev->flags &= ~ATA_DFLAG_PIO; + } else { + ata_dev_info(dev, "configured for PIO\n"); + dev->xfer_mode = XFER_PIO_0; + dev->xfer_shift = ATA_SHIFT_PIO; + dev->flags |= ATA_DFLAG_PIO; } } + return 0; } static struct scsi_host_template generic_sht = { - .module = THIS_MODULE, - .name = DRV_NAME, - .ioctl = ata_scsi_ioctl, - .queuecommand = ata_scsi_queuecmd, - .can_queue = ATA_DEF_QUEUE, - .this_id = ATA_SHT_THIS_ID, - .sg_tablesize = LIBATA_MAX_PRD, - .cmd_per_lun = ATA_SHT_CMD_PER_LUN, - .emulated = ATA_SHT_EMULATED, - .use_clustering = ATA_SHT_USE_CLUSTERING, - .proc_name = DRV_NAME, - .dma_boundary = ATA_DMA_BOUNDARY, - .slave_configure = ata_scsi_slave_config, - .slave_destroy = ata_scsi_slave_destroy, - .bios_param = ata_std_bios_param, - .resume = ata_scsi_device_resume, - .suspend = ata_scsi_device_suspend, + ATA_BMDMA_SHT(DRV_NAME), }; static struct ata_port_operations generic_port_ops = { + .inherits = &ata_bmdma_port_ops, + .cable_detect = ata_cable_unknown, .set_mode = generic_set_mode, - - .port_disable = ata_port_disable, - .tf_load = ata_tf_load, - .tf_read = ata_tf_read, - .check_status = ata_check_status, - .exec_command = ata_exec_command, - .dev_select = ata_std_dev_select, - - .bmdma_setup = ata_bmdma_setup, - .bmdma_start = ata_bmdma_start, - .bmdma_stop = ata_bmdma_stop, - .bmdma_status = ata_bmdma_status, - - .data_xfer = ata_pio_data_xfer, - - .freeze = ata_bmdma_freeze, - .thaw = ata_bmdma_thaw, - .error_handler = generic_error_handler, - .post_internal_cmd = ata_bmdma_post_internal_cmd, - - .qc_prep = ata_qc_prep, - .qc_issue = ata_qc_issue_prot, - - .irq_handler = ata_interrupt, - .irq_clear = ata_bmdma_irq_clear, - - .port_start = ata_port_start, - .port_stop = ata_port_stop, - .host_stop = ata_host_stop }; static int all_generic_ide; /* Set to claim all devices */ /** + * is_intel_ider - identify intel IDE-R devices + * @dev: PCI device + * + * Distinguish Intel IDE-R controller devices from other Intel IDE + * devices. IDE-R devices have no timing registers and are in + * most respects virtual. They should be driven by the ata_generic + * driver. + * + * IDE-R devices have PCI offset 0xF8.L as zero, later Intel ATA has + * it non zero. All Intel ATA has 0x40 writable (timing), but it is + * not writable on IDE-R devices (this is guaranteed). + */ + +static int is_intel_ider(struct pci_dev *dev) +{ + /* For Intel IDE the value at 0xF8 is only zero on IDE-R + interfaces */ + u32 r; + u16 t; + + /* Check the manufacturing ID, it will be zero for IDE-R */ + pci_read_config_dword(dev, 0xF8, &r); + /* Not IDE-R: punt so that ata_(old)piix gets it */ + if (r != 0) + return 0; + /* 0xF8 will also be zero on some early Intel IDE devices + but they will have a sane timing register */ + pci_read_config_word(dev, 0x40, &t); + if (t != 0) + return 0; + /* Finally check if the timing register is writable so that + we eliminate any early devices hot-docked in a docking + station */ + pci_write_config_word(dev, 0x40, 1); + pci_read_config_word(dev, 0x40, &t); + if (t) { + pci_write_config_word(dev, 0x40, 0); + return 0; + } + return 1; +} + +/** * ata_generic_init - attach generic IDE * @dev: PCI device found * @id: match entry @@ -169,20 +163,23 @@ static int all_generic_ide; /* Set to claim all devices */ static int ata_generic_init_one(struct pci_dev *dev, const struct pci_device_id *id) { u16 command; - static struct ata_port_info info = { - .sht = &generic_sht, - .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, - .pio_mask = 0x1f, - .mwdma_mask = 0x07, - .udma_mask = 0x3f, + static const struct ata_port_info info = { + .flags = ATA_FLAG_SLAVE_POSS, + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .udma_mask = ATA_UDMA5, .port_ops = &generic_port_ops }; - static struct ata_port_info *port_info[2] = { &info, &info }; + const struct ata_port_info *ppi[] = { &info, NULL }; /* Don't use the generic entry unless instructed to do so */ - if (id->driver_data == 1 && all_generic_ide == 0) + if ((id->driver_data & ATA_GEN_CLASS_MATCH) && all_generic_ide == 0) return -ENODEV; + if ((id->driver_data & ATA_GEN_INTEL_IDER) && !all_generic_ide) + if (!is_intel_ider(dev)) + return -ENODEV; + /* Devices that need care */ if (dev->vendor == PCI_VENDOR_ID_UMC && dev->device == PCI_DEVICE_ID_UMC_UM8886A && @@ -201,9 +198,15 @@ static int ata_generic_init_one(struct pci_dev *dev, const struct pci_device_id return -ENODEV; if (dev->vendor == PCI_VENDOR_ID_AL) - ata_pci_clear_simplex(dev); + ata_pci_bmdma_clear_simplex(dev); - return ata_pci_init_one(dev, port_info, 2); + if (dev->vendor == PCI_VENDOR_ID_ATI) { + int rc = pcim_enable_device(dev); + if (rc < 0) + return rc; + pcim_pin_device(dev); + } + return ata_pci_bmdma_init_one(dev, ppi, &generic_sht, (void *)id, 0); } static struct pci_device_id ata_generic[] = { @@ -215,11 +218,21 @@ static struct pci_device_id ata_generic[] = { { PCI_DEVICE(PCI_VENDOR_ID_HINT, PCI_DEVICE_ID_HINT_VXPROII_IDE), }, { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C561), }, { PCI_DEVICE(PCI_VENDOR_ID_OPTI, PCI_DEVICE_ID_OPTI_82C558), }, - { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO), }, + { PCI_DEVICE(PCI_VENDOR_ID_CENATEK,PCI_DEVICE_ID_CENATEK_IDE), + .driver_data = ATA_GEN_FORCE_DMA }, +#if !defined(CONFIG_PATA_TOSHIBA) && !defined(CONFIG_PATA_TOSHIBA_MODULE) { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_1), }, { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_2), }, + { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_3), }, + { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_5), }, +#endif + /* Intel, IDE class device */ + { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, + PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, + .driver_data = ATA_GEN_INTEL_IDER }, /* Must come last. If you add entries adjust this table appropriately */ - { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 1}, + { PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL), + .driver_data = ATA_GEN_CLASS_MATCH }, { 0, }, }; @@ -228,21 +241,13 @@ static struct pci_driver ata_generic_pci_driver = { .id_table = ata_generic, .probe = ata_generic_init_one, .remove = ata_pci_remove_one, +#ifdef CONFIG_PM_SLEEP .suspend = ata_pci_device_suspend, .resume = ata_pci_device_resume, +#endif }; -static int __init ata_generic_init(void) -{ - return pci_register_driver(&ata_generic_pci_driver); -} - - -static void __exit ata_generic_exit(void) -{ - pci_unregister_driver(&ata_generic_pci_driver); -} - +module_pci_driver(ata_generic_pci_driver); MODULE_AUTHOR("Alan Cox"); MODULE_DESCRIPTION("low-level driver for generic ATA"); @@ -250,7 +255,4 @@ MODULE_LICENSE("GPL"); MODULE_DEVICE_TABLE(pci, ata_generic); MODULE_VERSION(DRV_VERSION); -module_init(ata_generic_init); -module_exit(ata_generic_exit); - module_param(all_generic_ide, int, 0); |