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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-07-09 23:17:58 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-07-09 23:17:58 +0200 |
| commit | bdab00b73d2f77075a3c73556e2692bf06849c17 (patch) | |
| tree | 0ea8db6c990de201487d910bc51ca691f9e3887b /drivers/ide/pci/via82cxxx.c | |
| parent | f2befd9e80b39a5aa54d65cf59b6a5feb9a8117e (diff) | |
| download | lwn-bdab00b73d2f77075a3c73556e2692bf06849c17.tar.gz lwn-bdab00b73d2f77075a3c73556e2692bf06849c17.zip | |
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>
Diffstat (limited to 'drivers/ide/pci/via82cxxx.c')
| -rw-r--r-- | drivers/ide/pci/via82cxxx.c | 48 |
1 files changed, 41 insertions, 7 deletions
diff --git a/drivers/ide/pci/via82cxxx.c b/drivers/ide/pci/via82cxxx.c index ae88e9f65921..d21dd2e7eeb3 100644 --- a/drivers/ide/pci/via82cxxx.c +++ b/drivers/ide/pci/via82cxxx.c @@ -1,6 +1,6 @@ /* * - * 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) |