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Code Issues Releases Wiki Activity

accel/ivpu: Remove support for uncached buffers

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Usages of DRM_IVPU_BO_UNCACHED should be replaced by DRM_IVPU_BO_WC.
There is no functional benefit from DRM_IVPU_BO_UNCACHED if these
buffers are never mapped to host VM.

This allows to cut the buffer handling code in the kernel driver
by half.

Usage of DRM_IVPU_BO_UNCACHED buffers was removed from user-space
driver and will not be part of first UMD release.

Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231031073156.1301669-4-stanislaw.gruszka@linux.intel.com
This commit is contained in:
Jacek Lawrynowicz 2023-10-31 08:31:55 +01:00
parent 48aea7f2a2
commit 48d45fac39
3 changed files with 2 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/accel/ivpu/ivpu_fw.c
View file

@ -286,7 +286,7 @@ static int ivpu_fw_mem_init(struct ivpu_device *vdev)
if (fw->shave_nn_size) {
fw->mem_shave_nn = ivpu_bo_alloc_internal(vdev, vdev->hw->ranges.shave.start,
fw->shave_nn_size, DRM_IVPU_BO_UNCACHED);
fw->shave_nn_size, DRM_IVPU_BO_WC);
if (!fw->mem_shave_nn) {
ivpu_err(vdev, "Failed to allocate shavenn buffer\n");
ret = -ENOMEM;

3
drivers/accel/ivpu/ivpu_gem.c
View file

@ -89,8 +89,6 @@ static int __must_check shmem_alloc_pages_locked(struct ivpu_bo *bo)
if (bo->flags & DRM_IVPU_BO_WC)
set_pages_array_wc(pages, npages);
else if (bo->flags & DRM_IVPU_BO_UNCACHED)
set_pages_array_uc(pages, npages);
bo->pages = pages;
return 0;
@ -366,7 +364,6 @@ ivpu_bo_alloc(struct ivpu_device *vdev, u64 size, u32 flags, const struct ivpu_b
switch (flags & DRM_IVPU_BO_CACHE_MASK) {
case DRM_IVPU_BO_CACHED:
case DRM_IVPU_BO_UNCACHED:
case DRM_IVPU_BO_WC:
break;
default:

2
include/uapi/drm/ivpu_accel.h
View file

@ -196,7 +196,7 @@ struct drm_ivpu_bo_create {
*
* %DRM_IVPU_BO_UNCACHED:
*
* Allocated BO will not be cached on host side nor snooped on the VPU side.
* Not supported. Use DRM_IVPU_BO_WC instead.
*
* %DRM_IVPU_BO_WC:
*