* Add ->mdma_filter to ide_hwif_t and use it in ide_get_mode_mask().
* Remove needless setting of drive->using_dma from auide_dma_check().
* Split off auide_mdma_filter() from auide_dma_check().
* Use ide_tune_dma() in auide_dma_check(), this fixes following issues:
- device's DMA capability bit not being checked
- device not being checked against generic DMA blacklist
- transfer mode not being set on device/host
* Add PIO autotune fallback to auide_dma_check().
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
---
drivers/ide/ide-dma.c | 3 +++
drivers/ide/ide.c | 1 +
drivers/ide/mips/au1xxx-ide.c | 36 ++++++++++++++++++++++--------------
include/linux/ide.h | 1 +
4 files changed, 27 insertions(+), 14 deletions(-)
Index: b/drivers/ide/ide-dma.c
===================================================================
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -677,6 +677,9 @@ static unsigned int ide_get_mode_mask(id
case XFER_MW_DMA_0:
if (id->field_valid & 2)
mask = id->dma_mword & hwif->mwdma_mask;
+
+ if (hwif->mdma_filter)
+ mask &= hwif->mdma_filter(drive);
break;
case XFER_SW_DMA_0:
if (id->field_valid & 2) {
Index: b/drivers/ide/ide.c
===================================================================
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -398,6 +398,7 @@ static void ide_hwif_restore(ide_hwif_t
hwif->set_pio_mode = tmp_hwif->set_pio_mode;
hwif->set_dma_mode = tmp_hwif->set_dma_mode;
+ 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: b/drivers/ide/mips/au1xxx-ide.c
===================================================================
--- a/drivers/ide/mips/au1xxx-ide.c
+++ b/drivers/ide/mips/au1xxx-ide.c
@@ -351,11 +351,18 @@ static int auide_dma_setup(ide_drive_t *
return 0;
}
-static int auide_dma_check(ide_drive_t *drive)
+static u8 auide_mdma_filter(ide_drive_t *drive)
{
- u8 speed = ide_max_dma_mode(drive);
+ /*
+ * FIXME: ->white_list and ->black_list are based on completely bogus
+ * ->ide_dma_check implementation which didn't set neither the host
+ * controller timings nor the device for the desired transfer mode.
+ *
+ * They should be either removed or 0x00 MWDMA mask should be
+ * returned for devices on the ->black_list.
+ */
- if( dbdma_init_done == 0 ){
+ if (dbdma_init_done == 0) {
auide_hwif.white_list = ide_in_drive_list(drive->id,
dma_white_list);
auide_hwif.black_list = ide_in_drive_list(drive->id,
@@ -366,21 +373,20 @@ static int auide_dma_check(ide_drive_t *
}
/* Is the drive in our DMA black list? */
-
- if ( auide_hwif.black_list ) {
- drive->using_dma = 0;
-
- /* Borrowed the warning message from ide-dma.c */
-
+ if (auide_hwif.black_list)
printk(KERN_WARNING "%s: Disabling DMA for %s (blacklisted)\n",
- drive->name, drive->id->model);
- }
- else
- drive->using_dma = 1;
+ drive->name, drive->id->model);
- if (drive->autodma && (speed & XFER_MODE) != XFER_PIO)
+ return drive->hwif->mwdma_mask;
+}
+
+static int auide_dma_check(ide_drive_t *drive)
+{
+ if (ide_tune_dma(drive))
return 0;
+ ide_set_max_pio(drive);
+
return -1;
}
@@ -692,6 +698,8 @@ static int au_ide_probe(struct device *d
hwif->dma_off_quietly = &auide_dma_off_quietly;
hwif->dma_timeout = &auide_dma_timeout;
+ hwif->mdma_filter = &auide_mdma_filter;
+
hwif->ide_dma_check = &auide_dma_check;
hwif->dma_exec_cmd = &auide_dma_exec_cmd;
hwif->dma_start = &auide_dma_start;
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/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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