xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ioatdma: Adding support for 16 src PQ ops and super extended descriptors

Browse Source 
v3.3 introduced 16 sources PQ operations. This also introduced super extended
descriptors to support the 16 srcs operations. This patch adds support for
the 16 sources ops and in turn adds the super extended descriptors for those
ops.

5 SED pools are created depending on the descriptor sizes. An SED can be a 64
bytes sized descriptor or larger and must be physically contiguous. A kmem
cache pool is created for allocating the software descriptor that manages the
hardware descriptor. The super extended descriptor will take place of extended
descriptor under certain operations and be "attached" to the op descriptor
during operation. This is a new feature for ioatdma v3.3.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <djbw@fb.com>
Acked-by: Dan Williams <djbw@fb.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Dave Jiang
2013-04-15 10:25:56 -07:00
committed by Vinod Koul
parent e0884772d3
commit 7727eaa449
6 changed files with 438 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/dma/ioat/pci.c
View File

@@ -207,6 +207,9 @@ static void ioat_remove(struct pci_dev *pdev)
if (!device)
return;
if (device->version >= IOAT_VER_3_0)
ioat3_dma_remove(device);
dev_err(&pdev->dev, "Removing dma and dca services\n");
if (device->dca) {
unregister_dca_provider(device->dca, &pdev->dev);