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gpu: nvgpu: support platform specific physical address translation

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On some GPUs certain physical address bits have special meaning. This
patch adds support for setting those bits based on the GMMU attributes
struct.

Jira GPUT19X-10
Bug 200279508

Change-Id: I32b8a028be7fd62af06a60c393a8c9251de0ef3c
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master/r/1512600
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
This commit is contained in:
Deepak Nibade
2017-07-03 17:16:48 +05:30
committed by mobile promotions
parent d479a781c6
commit 40c19c67d0
3 changed files with 12 additions and 2 deletions
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5
drivers/gpu/nvgpu/common/mm/gmmu.c
View File

@@ -404,8 +404,9 @@ static int __set_pd_level(struct vm_gk20a *vm,
* to be the table of PDEs. When the next level is PTEs the
* target addr is the real physical address we are aiming for.
*/
target_addr = next_pd ? nvgpu_pde_phys_addr(g, next_pd) :
phys_addr;
target_addr = next_pd ?
nvgpu_pde_phys_addr(g, next_pd) :
g->ops.mm.gpu_phys_addr(g, attrs, phys_addr);
l->update_entry(vm, l,
pd, pd_idx,

2
drivers/gpu/nvgpu/gk20a/gk20a.h
View File

@@ -713,6 +713,8 @@ struct gpu_ops {
(*get_mmu_levels)(struct gk20a *g, u32 big_page_size);
void (*init_pdb)(struct gk20a *g, struct nvgpu_mem *inst_block,
struct vm_gk20a *vm);
u64 (*gpu_phys_addr)(struct gk20a *g,
struct nvgpu_gmmu_attrs *attrs, u64 phys);
u64 (*get_iova_addr)(struct gk20a *g, struct scatterlist *sgl,
u32 flags);
size_t (*get_vidmem_size)(struct gk20a *g);

7
drivers/gpu/nvgpu/gm20b/mm_gm20b.c
View File

@@ -60,6 +60,12 @@ static bool gm20b_mm_is_bar1_supported(struct gk20a *g)
return true;
}
u64 gm20b_gpu_phys_addr(struct gk20a *g,
struct nvgpu_gmmu_attrs *attrs, u64 phys)
{
return phys;
}
void gm20b_init_mm(struct gpu_ops *gops)
{
gops->mm.support_sparse = gm20b_mm_support_sparse;
@@ -73,6 +79,7 @@ void gm20b_init_mm(struct gpu_ops *gops)
gops->mm.set_big_page_size = gm20b_mm_set_big_page_size;
gops->mm.get_big_page_sizes = gm20b_mm_get_big_page_sizes;
gops->mm.get_default_big_page_size = gm20b_mm_get_default_big_page_size;
gops->mm.gpu_phys_addr = gm20b_gpu_phys_addr;
gops->mm.get_iova_addr = gk20a_mm_iova_addr;
gops->mm.get_physical_addr_bits = gk20a_mm_get_physical_addr_bits;
gops->mm.get_mmu_levels = gk20a_mm_get_mmu_levels;