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Date: Mon, 3 Sep 2007 00:19:22 +0400
From: Sergei Shtylyov <sshtylyov@...mvista.com>
To: bzolnier@...il.com
Cc: linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/4] hpt366: MWDMA filter for SATA cards
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();
- installed the method for all chips to only return empty mask if a SATA drive
is detected onHPT372{AN]/374 chips...
Signed-off-by: Sergei Shtylyov <sshtylyov@...mvista.com>
---
This patch against the current Linus' tree and unfortunately I was able to only
compile test it since that tree gives MODPOST warning and dies early on bootup.
Will hopefully try to test if/when I have time... :-)
drivers/ide/ide-dma.c | 9 +++++++--
drivers/ide/ide-lib.c | 4 +++-
drivers/ide/ide.c | 1 +
drivers/ide/pci/hpt366.c | 23 +++++++++++++++++++++--
include/linux/ide.h | 1 +
5 files changed, 33 insertions(+), 5 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-lib.c
===================================================================
--- linux-2.6.orig/drivers/ide/ide-lib.c
+++ linux-2.6/drivers/ide/ide-lib.c
@@ -103,7 +103,9 @@ u8 ide_rate_filter(ide_drive_t *drive, u
base = XFER_MW_DMA_0;
/* Fall thru */
case XFER_MW_DMA_0:
- if (hwif->mwdma_mask & bit)
+ mask = hwif->mdma_filter ? hwif->mdma_filter(drive) :
+ hwif->mwdma_mask;
+ if (mask & bit)
break;
base = XFER_SW_DMA_0;
/* Fall thru */
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 25, 2007
+ * linux/drivers/ide/pci/hpt366.c Version 1.13 Aug 22, 2007
*
* Copyright (C) 1999-2003 Andre Hedrick <andre@...ux-ide.org>
* 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@...mvista.com> or <source@...sta.com>
*/
@@ -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);
-
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