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gpu: nvgpu: Per-SoC compressible page size

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Define smallest compressible page size per SoC, and use that for
determining if a compressible kind should be downgraded to
uncompressed.

Bug 1605769

Change-Id: I7c9991ba0ae82fe533641f045e506c0b01a10d8b
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/724492
This commit is contained in:
Terje Bergstrom
2015-03-31 14:37:21 -07:00
committed by Dan Willemsen
parent 9f4405aeb5
commit 9974201d61
4 changed files with 15 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/nvgpu/gk20a/fb_gk20a.c
View File

@@ -55,11 +55,17 @@ static int gk20a_fb_compression_page_size(struct gk20a *g)
return SZ_128K;
}
static int gk20a_fb_compressible_page_size(struct gk20a *g)
{
return SZ_64K;
}
void gk20a_init_fb(struct gpu_ops *gops)
{
gops->fb.reset = fb_gk20a_reset;
gops->fb.set_mmu_page_size = gk20a_fb_set_mmu_page_size;
gops->fb.compression_page_size = gk20a_fb_compression_page_size;
gops->fb.compressible_page_size = gk20a_fb_compressible_page_size;
gk20a_init_uncompressed_kind_map();
gk20a_init_kind_attr();
}

1
drivers/gpu/nvgpu/gk20a/gk20a.h
View File

@@ -182,6 +182,7 @@ struct gpu_ops {
void (*init_kind_attr)(struct gk20a *g);
void (*set_mmu_page_size)(struct gk20a *g);
int (*compression_page_size)(struct gk20a *g);
int (*compressible_page_size)(struct gk20a *g);
void (*dump_vpr_wpr_info)(struct gk20a *g);
} fb;
struct {

4
drivers/gpu/nvgpu/gk20a/mm_gk20a.c
View File

@@ -1001,8 +1001,8 @@ static int setup_buffer_kind_and_compression(struct vm_gk20a *vm,
}
}
/* comptags only supported for suitable kinds, 128KB pagesize */
if (unlikely(kind_compressible &&
(vm->gmmu_page_sizes[pgsz_idx] != vm->big_page_size))) {
if (kind_compressible &&
vm->gmmu_page_sizes[pgsz_idx] < g->ops.fb.compressible_page_size(g)) {
/*
gk20a_warn(d, "comptags specified"
" but pagesize being used doesn't support it");*/

6
drivers/gpu/nvgpu/gm20b/fb_gm20b.c
View File

@@ -95,6 +95,11 @@ static int gm20b_fb_compression_page_size(struct gk20a *g)
return SZ_128K;
}
static int gm20b_fb_compressible_page_size(struct gk20a *g)
{
return SZ_64K;
}
static void gm20b_fb_dump_vpr_wpr_info(struct gk20a *g)
{
u32 val;
@@ -129,6 +134,7 @@ void gm20b_init_fb(struct gpu_ops *gops)
gops->fb.init_fs_state = fb_gm20b_init_fs_state;
gops->fb.set_mmu_page_size = gm20b_fb_set_mmu_page_size;
gops->fb.compression_page_size = gm20b_fb_compression_page_size;
gops->fb.compressible_page_size = gm20b_fb_compressible_page_size;
gops->fb.dump_vpr_wpr_info = gm20b_fb_dump_vpr_wpr_info;
gm20b_init_uncompressed_kind_map();
gm20b_init_kind_attr();