linux-imx
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committed fe31edc8a3bx
}/** * init_hwif_piix - fill in the hwif for the PIIX * @hwif: IDE interface * * Set up the ide_hwif_t for the PIIX interface according to the * capabilities of the hardware. */static void __devinit init_hwif_piix(ide_hwif_t *hwif)static void init_hwif_piix(ide_hwif_t *hwif){ if (!hwif->dma_base) return; if (no_piix_dma) hwif->ultra_mask = hwif->mwdma_mask = hwif->swdma_mask = 0;}static const struct ide_port_ops piix_port_ops = { .set_pio_mode = piix_set_pio_mode, .init_chipset = init_chipset_ich, \ .init_hwif = init_hwif_piix, \ .enablebits = {{0x41,0x80,0x80}, {0x43,0x80,0x80}}, \ .port_ops = &ich_port_ops, \ .pio_mask = ATA_PIO4, \ .swdma_mask = ATA_SWDMA2_ONLY, \ .mwdma_mask = mwdma, \ .udma_mask = udma, \ }static const struct ide_port_info piix_pci_info[] __devinitconst = {static const struct ide_port_info piix_pci_info[] = { /* 0: MPIIX */ { /* * MPIIX actually has only a single IDE channel mapped to * the primary or secondary ports depending on the value * of the bit 14 of the IDETIM register at offset 0x6c */ .name = DRV_NAME, .enablebits = {{0x6d,0xc0,0x80}, {0x6d,0xc0,0xc0}}, .host_flags = IDE_HFLAG_ISA_PORTS | IDE_HFLAG_NO_DMA, .pio_mask = ATA_PIO4,/** * piix_init_one - called when a PIIX is found * @dev: the piix 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 piix_init_one(struct pci_dev *dev, const struct pci_device_id *id)static int piix_init_one(struct pci_dev *dev, const struct pci_device_id *id){ return ide_pci_init_one(dev, &piix_pci_info[id->driver_data], NULL);}/** * piix_check_450nx - Check for problem 450NX setup * * Check for the present of 450NX errata #19 and errata #25. If * they are found, disable use of DMA IDE */static void __devinit piix_check_450nx(void)static void piix_check_450nx(void){ struct pci_dev *pdev = NULL; u16 cfg; while((pdev=pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev))!=NULL) { /* Look for 450NX PXB. Check for problem configurations A PCI quirk checks bit 6 already */ pci_read_config_word(pdev, 0x41, &cfg); /* Only on the original revision: IDE DMA can hang */ if (pdev->revision == 0x00)