Commit bdab00b7 authored Jul 09, 2007 by Bartlomiej Zolnierkiewicz

via82cxxx: backport short cables support from pata_via.c



Backport short cables support from pata_via.c.

This patch should allow UDMA > 2 modes on Acer Ferrari 3400.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>

parent f2befd9e

drivers/ide/pci/via82cxxx.c

+41 −7

Original line number	Diff line number	Diff line
		/*
		*
		* Version 3.40
		* Version 3.45
		*
		* VIA IDE driver for Linux. Supported southbridges:
		*
		@@ -34,6 +34,8 @@
		#include <linux/pci.h>
		#include <linux/init.h>
		#include <linux/ide.h>
		#include <linux/dmi.h>

		#include <asm/io.h>

		#ifdef CONFIG_PPC_CHRP
		@@ -415,6 +417,42 @@ static unsigned int __devinit init_chipset_via82cxxx(struct pci_dev *dev, const
		return 0;
		}

		/*
		* Cable special cases
		*/

		static struct dmi_system_id cable_dmi_table[] = {
		{
		.ident = "Acer Ferrari 3400",
		.matches = {
		DMI_MATCH(DMI_BOARD_VENDOR, "Acer,Inc."),
		DMI_MATCH(DMI_BOARD_NAME, "Ferrari 3400"),
		},
		},
		{ }
		};

		static int via_cable_override(void)
		{
		/* Systems by DMI */
		if (dmi_check_system(cable_dmi_table))
		return 1;
		return 0;
		}

		static u8 __devinit via82cxxx_cable_detect(ide_hwif_t *hwif)
		{
		struct via82cxxx_dev *vdev = pci_get_drvdata(hwif->pci_dev);

		if (via_cable_override())
		return ATA_CBL_PATA40_SHORT;

		if ((vdev->via_80w >> hwif->channel) & 1)
		return ATA_CBL_PATA80;
		else
		return ATA_CBL_PATA40;
		}

		static void __devinit init_hwif_via82cxxx(ide_hwif_t *hwif)
		{
		struct via82cxxx_dev *vdev = pci_get_drvdata(hwif->pci_dev);
		@@ -448,12 +486,8 @@ static void __devinit init_hwif_via82cxxx(ide_hwif_t *hwif)
		hwif->mwdma_mask = 0x07;
		hwif->swdma_mask = 0x07;

		if (hwif->cbl != ATA_CBL_PATA40_SHORT) {
		if ((vdev->via_80w >> hwif->channel) & 1)
		hwif->cbl = ATA_CBL_PATA80;
		else
		hwif->cbl = ATA_CBL_PATA40;
		}
		if (hwif->cbl != ATA_CBL_PATA40_SHORT)
		hwif->cbl = via82cxxx_cable_detect(hwif);

		hwif->ide_dma_check = &via82cxxx_ide_dma_check;
		if (!noautodma)