X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=drivers%2Fide%2Fsetup-pci.c;h=8ff5a0ef10adc35bc4e50c7dc4892b03fcf91617;hb=59bca8cc995428c34d8cdfadfa87c8e3f01c4340;hp=25fd090532206197212576093088ebbcbeced62b;hpb=99fee6d7e5748d96884667a4628118f7fc130ea0;p=~andy%2Flinux diff --git a/drivers/ide/setup-pci.c b/drivers/ide/setup-pci.c index 25fd0905322..8ff5a0ef10a 100644 --- a/drivers/ide/setup-pci.c +++ b/drivers/ide/setup-pci.c @@ -1,9 +1,8 @@ /* - * linux/drivers/ide/setup-pci.c Version 1.10 2002/08/19 + * Copyright (C) 1998-2000 Andre Hedrick + * Copyright (C) 1995-1998 Mark Lord + * Copyright (C) 2007 Bartlomiej Zolnierkiewicz * - * Copyright (c) 1998-2000 Andre Hedrick - * - * Copyright (c) 1995-1998 Mark Lord * May be copied or modified under the terms of the GNU General Public License */ @@ -140,6 +139,16 @@ static int ide_setup_pci_baseregs (struct pci_dev *dev, const char *name) } #ifdef CONFIG_BLK_DEV_IDEDMA_PCI +static void ide_pci_clear_simplex(unsigned long dma_base, const char *name) +{ + u8 dma_stat = inb(dma_base + 2); + + outb(dma_stat & 0x60, dma_base + 2); + dma_stat = inb(dma_base + 2); + if (dma_stat & 0x80) + printk(KERN_INFO "%s: simplex device: DMA forced\n", name); +} + /** * ide_get_or_set_dma_base - setup BMIBA * @d: IDE port info @@ -152,8 +161,9 @@ static int ide_setup_pci_baseregs (struct pci_dev *dev, const char *name) static unsigned long ide_get_or_set_dma_base(const struct ide_port_info *d, ide_hwif_t *hwif) { - unsigned long dma_base = 0; - struct pci_dev *dev = hwif->pci_dev; + struct pci_dev *dev = to_pci_dev(hwif->dev); + unsigned long dma_base = 0; + u8 dma_stat = 0; if (hwif->mmio) return hwif->dma_base; @@ -165,57 +175,39 @@ static unsigned long ide_get_or_set_dma_base(const struct ide_port_info *d, ide_ dma_base = pci_resource_start(dev, baridx); - if (dma_base == 0) + if (dma_base == 0) { printk(KERN_ERR "%s: DMA base is invalid\n", d->name); + return 0; + } } - if ((d->host_flags & IDE_HFLAG_CS5520) == 0 && dma_base) { - u8 simplex_stat = 0; - dma_base += hwif->channel ? 8 : 0; - - switch(dev->device) { - case PCI_DEVICE_ID_AL_M5219: - case PCI_DEVICE_ID_AL_M5229: - case PCI_DEVICE_ID_AMD_VIPER_7409: - case PCI_DEVICE_ID_CMD_643: - case PCI_DEVICE_ID_SERVERWORKS_CSB5IDE: - case PCI_DEVICE_ID_REVOLUTION: - simplex_stat = inb(dma_base + 2); - outb(simplex_stat & 0x60, dma_base + 2); - simplex_stat = inb(dma_base + 2); - if (simplex_stat & 0x80) { - printk(KERN_INFO "%s: simplex device: " - "DMA forced\n", - d->name); - } - break; - default: - /* - * If the device claims "simplex" DMA, - * this means only one of the two interfaces - * can be trusted with DMA at any point in time. - * So we should enable DMA only on one of the - * two interfaces. - */ - simplex_stat = hwif->INB(dma_base + 2); - if (simplex_stat & 0x80) { - /* simplex device? */ -/* - * At this point we haven't probed the drives so we can't make the - * appropriate decision. Really we should defer this problem - * until we tune the drive then try to grab DMA ownership if we want - * to be the DMA end. This has to be become dynamic to handle hot - * plug. - */ - if (hwif->mate && hwif->mate->dma_base) { - printk(KERN_INFO "%s: simplex device: " - "DMA disabled\n", - d->name); - dma_base = 0; - } - } - } + if (hwif->channel) + dma_base += 8; + + if (d->host_flags & IDE_HFLAG_CS5520) + goto out; + + if (d->host_flags & IDE_HFLAG_CLEAR_SIMPLEX) { + ide_pci_clear_simplex(dma_base, d->name); + goto out; } + + /* + * If the device claims "simplex" DMA, this means that only one of + * the two interfaces can be trusted with DMA at any point in time + * (so we should enable DMA only on one of the two interfaces). + * + * FIXME: At this point we haven't probed the drives so we can't make + * the appropriate decision. Really we should defer this problem until + * we tune the drive then try to grab DMA ownership if we want to be + * the DMA end. This has to be become dynamic to handle hot-plug. + */ + dma_stat = hwif->INB(dma_base + 2); + if ((dma_stat & 0x80) && hwif->mate && hwif->mate->dma_base) { + printk(KERN_INFO "%s: simplex device: DMA disabled\n", d->name); + dma_base = 0; + } +out: return dma_base; } #endif /* CONFIG_BLK_DEV_IDEDMA_PCI */ @@ -359,6 +351,8 @@ static ide_hwif_t *ide_hwif_configure(struct pci_dev *dev, const struct ide_port unsigned long ctl = 0, base = 0; ide_hwif_t *hwif; u8 bootable = (d->host_flags & IDE_HFLAG_BOOTABLE) ? 1 : 0; + u8 oldnoprobe = 0; + struct hw_regs_s hw; if ((d->host_flags & IDE_HFLAG_ISA_PORTS) == 0) { /* Possibly we should fail if these checks report true */ @@ -381,26 +375,25 @@ static ide_hwif_t *ide_hwif_configure(struct pci_dev *dev, const struct ide_port } if ((hwif = ide_match_hwif(base, bootable, d->name)) == NULL) return NULL; /* no room in ide_hwifs[] */ - if (hwif->io_ports[IDE_DATA_OFFSET] != base || - hwif->io_ports[IDE_CONTROL_OFFSET] != (ctl | 2)) { - hw_regs_t hw; - - memset(&hw, 0, sizeof(hw)); -#ifndef CONFIG_IDE_ARCH_OBSOLETE_INIT - ide_std_init_ports(&hw, base, ctl | 2); -#else - ide_init_hwif_ports(&hw, base, ctl | 2, NULL); -#endif - memcpy(hwif->io_ports, hw.io_ports, sizeof(hwif->io_ports)); - hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET]; - } - hwif->chipset = d->chipset ? d->chipset : ide_pci; - hwif->pci_dev = dev; + + memset(&hw, 0, sizeof(hw)); + hw.irq = hwif->irq ? hwif->irq : irq; + hw.dev = &dev->dev; + hw.chipset = d->chipset ? d->chipset : ide_pci; + ide_std_init_ports(&hw, base, ctl | 2); + + if (hwif->io_ports[IDE_DATA_OFFSET] == base && + hwif->io_ports[IDE_CONTROL_OFFSET] == (ctl | 2)) + oldnoprobe = hwif->noprobe; + + ide_init_port_hw(hwif, &hw); + + hwif->noprobe = oldnoprobe; + + hwif->dev = &dev->dev; hwif->cds = d; hwif->channel = port; - if (!hwif->irq) - hwif->irq = irq; if (mate) { hwif->mate = mate; mate->mate = hwif; @@ -446,7 +439,7 @@ static void ide_hwif_setup_dma(struct pci_dev *dev, const struct ide_port_info * if (d->init_dma) { d->init_dma(hwif, dma_base); } else { - ide_setup_dma(hwif, dma_base, 8); + ide_setup_dma(hwif, dma_base); } } else { printk(KERN_INFO "%s: %s Bus-Master DMA disabled " @@ -535,12 +528,8 @@ void ide_pci_setup_ports(struct pci_dev *dev, const struct ide_port_info *d, int if ((hwif = ide_hwif_configure(dev, d, mate, port, pciirq)) == NULL) continue; - /* setup proper ancestral information */ - hwif->gendev.parent = &dev->dev; - *(idx + port) = hwif->index; - if (d->init_iops) d->init_iops(hwif); @@ -551,8 +540,6 @@ void ide_pci_setup_ports(struct pci_dev *dev, const struct ide_port_info *d, int (d->host_flags & IDE_HFLAG_FORCE_LEGACY_IRQS)) hwif->irq = port ? 15 : 14; - hwif->fixup = d->fixup; - hwif->host_flags = d->host_flags; hwif->pio_mask = d->pio_mask; @@ -699,104 +686,3 @@ out: } EXPORT_SYMBOL_GPL(ide_setup_pci_devices); - -#ifdef CONFIG_IDEPCI_PCIBUS_ORDER -/* - * Module interfaces - */ - -static int pre_init = 1; /* Before first ordered IDE scan */ -static LIST_HEAD(ide_pci_drivers); - -/* - * __ide_pci_register_driver - attach IDE driver - * @driver: pci driver - * @module: owner module of the driver - * - * Registers a driver with the IDE layer. The IDE layer arranges that - * boot time setup is done in the expected device order and then - * hands the controllers off to the core PCI code to do the rest of - * the work. - * - * Returns are the same as for pci_register_driver - */ - -int __ide_pci_register_driver(struct pci_driver *driver, struct module *module, - const char *mod_name) -{ - if(!pre_init) - return __pci_register_driver(driver, module, mod_name); - driver->driver.owner = module; - list_add_tail(&driver->node, &ide_pci_drivers); - return 0; -} - -EXPORT_SYMBOL_GPL(__ide_pci_register_driver); - -/** - * ide_scan_pcidev - find an IDE driver for a device - * @dev: PCI device to check - * - * Look for an IDE driver to handle the device we are considering. - * This is only used during boot up to get the ordering correct. After - * boot up the pci layer takes over the job. - */ - -static int __init ide_scan_pcidev(struct pci_dev *dev) -{ - struct list_head *l; - struct pci_driver *d; - - list_for_each(l, &ide_pci_drivers) { - d = list_entry(l, struct pci_driver, node); - if (d->id_table) { - const struct pci_device_id *id = pci_match_id(d->id_table, - dev); - if (id != NULL && d->probe(dev, id) >= 0) { - dev->driver = d; - pci_dev_get(dev); - return 1; - } - } - } - return 0; -} - -/** - * ide_scan_pcibus - perform the initial IDE driver scan - * @scan_direction: set for reverse order scanning - * - * Perform the initial bus rather than driver ordered scan of the - * PCI drivers. After this all IDE pci handling becomes standard - * module ordering not traditionally ordered. - */ - -void __init ide_scan_pcibus (int scan_direction) -{ - struct pci_dev *dev = NULL; - struct pci_driver *d; - struct list_head *l, *n; - - pre_init = 0; - if (!scan_direction) - while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) - ide_scan_pcidev(dev); - else - while ((dev = pci_get_device_reverse(PCI_ANY_ID, PCI_ANY_ID, dev)) - != NULL) - ide_scan_pcidev(dev); - - /* - * Hand the drivers over to the PCI layer now we - * are post init. - */ - - list_for_each_safe(l, n, &ide_pci_drivers) { - list_del(l); - d = list_entry(l, struct pci_driver, node); - if (__pci_register_driver(d, d->driver.owner, d->driver.mod_name)) - printk(KERN_ERR "%s: failed to register driver for %s\n", - __FUNCTION__, d->driver.mod_name); - } -} -#endif