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gpu: nvgpu: Remove mapping of comptags to user VA

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Remove the kernel feature to map compbit backing store areas to GPU VA.
The feature is not used, and the relevant user space code is getting
removed, too.

Change-Id: I94f8bb9145da872694fdc5d3eb3c1365b2f47945
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1547898
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: Sami Kiminki <skiminki@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
This commit is contained in:
Terje Bergstrom
2017-08-29 13:00:22 -07:00
committed by mobile promotions
parent d2dce545bb
commit bb457e675e
7 changed files with 4 additions and 355 deletions
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12
drivers/gpu/nvgpu/common/linux/vm.c
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@@ -199,8 +199,6 @@ u64 nvgpu_vm_map(struct vm_gk20a *vm,
struct gk20a_comptags comptags;
bool clear_ctags = false;
struct scatterlist *sgl;
u64 ctag_map_win_size = 0;
u32 ctag_map_win_ctagline = 0;
struct nvgpu_vm_area *vm_area = NULL;
u32 ctag_offset;
enum nvgpu_aperture aperture;
@@ -298,15 +296,10 @@ u64 nvgpu_vm_map(struct vm_gk20a *vm,
g->ops.fb.compression_page_size(g));
if (bfr.ctag_lines && !comptags.lines) {
const bool user_mappable =
!!(flags & NVGPU_AS_MAP_BUFFER_FLAGS_MAPPABLE_COMPBITS);
/* allocate compression resources if needed */
err = gk20a_alloc_comptags(g, dev, dmabuf,
ctag_allocator,
bfr.ctag_lines, user_mappable,
&ctag_map_win_size,
&ctag_map_win_ctagline);
bfr.ctag_lines);
if (err) {
/* ok to fall back here if we ran out */
/* TBD: we can partially alloc ctags as well... */
@@ -370,9 +363,6 @@ u64 nvgpu_vm_map(struct vm_gk20a *vm,
mapped_buffer->ctag_offset = bfr.ctag_offset;
mapped_buffer->ctag_lines = bfr.ctag_lines;
mapped_buffer->ctag_allocated_lines = bfr.ctag_allocated_lines;
mapped_buffer->ctags_mappable = bfr.ctag_user_mappable;
mapped_buffer->ctag_map_win_size = ctag_map_win_size;
mapped_buffer->ctag_map_win_ctagline = ctag_map_win_ctagline;
mapped_buffer->vm = vm;
mapped_buffer->flags = flags;
mapped_buffer->kind = kind;