The Marvell bridge chips used on HighPoint SATA cards do not seem to support the MWDMA modes (at least that caould be seen in their so-called drivers :-), so the driver needs to account for this -- to achieve this: - add mdma_filter() method from the original patch by Bartlomiej Zolnierkewicz with his consent, also adding the method callout to ide_rate_filter(); - install the method for all chips to only return empty mask if a SATA drive is detected on HPT372{AN]/374 chips... Signed-off-by: Sergei Shtylyov <sshtylyov@xxxxxxxxxxxxx> --- This patch is against the current Linus' tree. It has not been tested on a real SATA card... drivers/ide/ide-dma.c | 9 +++++++-- drivers/ide/ide.c | 1 + drivers/ide/pci/hpt366.c | 23 +++++++++++++++++++++-- include/linux/ide.h | 1 + 4 files changed, 30 insertions(+), 4 deletions(-) Index: linux-2.6/drivers/ide/ide-dma.c =================================================================== --- linux-2.6.orig/drivers/ide/ide-dma.c +++ linux-2.6/drivers/ide/ide-dma.c @@ -674,8 +674,13 @@ static unsigned int ide_get_mode_mask(id mask &= 0x07; break; case XFER_MW_DMA_0: - if (id->field_valid & 2) - mask = id->dma_mword & hwif->mwdma_mask; + if ((id->field_valid & 2) == 0) + break; + if (hwif->mdma_filter) + mask = hwif->mdma_filter(drive); + else + mask = hwif->mwdma_mask; + mask &= id->dma_mword; break; case XFER_SW_DMA_0: if (id->field_valid & 2) { Index: linux-2.6/drivers/ide/ide.c =================================================================== --- linux-2.6.orig/drivers/ide/ide.c +++ linux-2.6/drivers/ide/ide.c @@ -398,6 +398,7 @@ static void ide_hwif_restore(ide_hwif_t hwif->tuneproc = tmp_hwif->tuneproc; hwif->speedproc = tmp_hwif->speedproc; + hwif->mdma_filter = tmp_hwif->mdma_filter; hwif->udma_filter = tmp_hwif->udma_filter; hwif->selectproc = tmp_hwif->selectproc; hwif->reset_poll = tmp_hwif->reset_poll; Index: linux-2.6/drivers/ide/pci/hpt366.c =================================================================== --- linux-2.6.orig/drivers/ide/pci/hpt366.c +++ linux-2.6/drivers/ide/pci/hpt366.c @@ -1,5 +1,5 @@ /* - * linux/drivers/ide/pci/hpt366.c Version 1.12 Aug 19, 2007 + * linux/drivers/ide/pci/hpt366.c Version 1.13 Sep 29, 2007 * * Copyright (C) 1999-2003 Andre Hedrick <andre@xxxxxxxxxxxxx> * Portions Copyright (C) 2001 Sun Microsystems, Inc. @@ -114,7 +114,7 @@ * unify HPT36x/37x timing setup code and the speedproc handlers by joining * the register setting lists into the table indexed by the clock selected * - set the correct hwif->ultra_mask for each individual chip - * - add UltraDMA mode filtering for the HPT37[24] based SATA cards + * - add Ultra and MW DMA mode filtering for the HPT37[24] based SATA cards * Sergei Shtylyov, <sshtylyov@xxxxxxxxxxxxx> or <source@xxxxxxxxxx> */ @@ -562,6 +562,24 @@ static u8 hpt3xx_udma_filter(ide_drive_t return check_in_drive_list(drive, bad_ata33) ? 0x00 : mask; } +static u8 hpt3xx_mdma_filter(ide_drive_t *drive) +{ + ide_hwif_t *hwif = HWIF(drive); + struct hpt_info *info = pci_get_drvdata(hwif->pci_dev); + + switch (info->chip_type) { + case HPT372 : + case HPT372A: + case HPT372N: + case HPT374 : + if (ide_dev_is_sata(drive->id)) + return 0x00; + /* Fall thru */ + default: + return 0x07; + } +} + static u32 get_speed_setting(u8 speed, struct hpt_info *info) { int i; @@ -1257,6 +1275,7 @@ static void __devinit init_hwif_hpt366(i hwif->busproc = &hpt3xx_busproc; hwif->udma_filter = &hpt3xx_udma_filter; + hwif->mdma_filter = &hpt3xx_mdma_filter; /* * HPT3xxN chips have some complications: Index: linux-2.6/include/linux/ide.h =================================================================== --- linux-2.6.orig/include/linux/ide.h +++ linux-2.6/include/linux/ide.h @@ -723,6 +723,7 @@ typedef struct hwif_s { /* driver soft-power interface */ int (*busproc)(ide_drive_t *, int); #endif + u8 (*mdma_filter)(ide_drive_t *); u8 (*udma_filter)(ide_drive_t *); void (*ata_input_data)(ide_drive_t *, void *, u32); - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html