The patch titled
iommu sg merging: add accessors for segment_boundary_mask in device_dma_parameters()
has been removed from the -mm tree. Its filename was
add-accessors-for-segment_boundary_mask-in.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: iommu sg merging: add accessors for segment_boundary_mask in device_dma_parameters()
From: FUJITA Tomonori <tomof@xxxxxxx>
This adds new accessors for segment_boundary_mask in device_dma_parameters
structure in the same way I did for max_segment_size. So we can easily change
where to place struct device_dma_parameters in the future.
dma_get_segment boundary returns 0xffffffff if dma_parms in struct device
isn't set up properly. 0xffffffff is the default value used in the block
layer and the scsi mid layer.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx>
Cc: James Bottomley <James.Bottomley@xxxxxxxxxxxx>
Cc: Jens Axboe <jens.axboe@xxxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Cc: Jeff Garzik <jeff@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/dma-mapping.h | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff -puN include/linux/dma-mapping.h~add-accessors-for-segment_boundary_mask-in include/linux/dma-mapping.h
--- a/include/linux/dma-mapping.h~add-accessors-for-segment_boundary_mask-in
+++ a/include/linux/dma-mapping.h
@@ -75,6 +75,21 @@ static inline unsigned int dma_set_max_s
return -EIO;
}
+static inline unsigned long dma_get_seg_boundary(struct device *dev)
+{
+ return dev->dma_parms ?
+ dev->dma_parms->segment_boundary_mask : 0xffffffff;
+}
+
+static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask)
+{
+ if (dev->dma_parms) {
+ dev->dma_parms->segment_boundary_mask = mask;
+ return 0;
+ } else
+ return -EIO;
+}
+
/* flags for the coherent memory api */
#define DMA_MEMORY_MAP 0x01
#define DMA_MEMORY_IO 0x02
_
Patches currently in -mm which might be from tomof@xxxxxxx are
origin.patch
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