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gpu: nvgpu: select map access type from dmabuf permission and user request

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Add api to translate dmabuf's fmode_t to gk20a_mem_rw_flag
for read only/read write mapping selection.

By default dmabuf fd mapping permission should be a maximum
access permission associated to a particual dmabuf fd.

Remove bit flag MAP_ACCESS_NO_WRITE and add 2 bit values for
user access requests NVGPU_VM_MAP_ACCESS_DEFAULT|READ_ONLY|
READ_WRITE.

To unify map access type handling in Linux and QNX move the
parameter NVGPU_VM_MAP_ACCESS_* check to common function
nvgpu_vm_map.

Set MAP_ACCESS_TYPE enabled flag in common characteristics
init function as it is supported for Linux and QNX.

Bug 200717195
Bug 3250920

Change-Id: I1a249f7c52bda099390dd4f371b005e1a7cef62f
Signed-off-by: Lakshmanan M <lm@nvidia.com>
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2507150
Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Lakshmanan M
2021-03-29 15:02:08 +05:30
committed by mobile promotions
parent 261bdb9cc2
commit 19186c8a02
9 changed files with 105 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
userspace/units/mm/vm/vm.c
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@@ -355,6 +355,7 @@ int test_map_buffer_error_cases(struct unit_module *m, struct gk20a *g,
buf_size,
0,
gk20a_mem_flag_none,
NVGPU_VM_MAP_ACCESS_READ_WRITE,
NVGPU_VM_MAP_CACHEABLE,
NV_KIND_INVALID,
0,
@@ -377,6 +378,7 @@ int test_map_buffer_error_cases(struct unit_module *m, struct gk20a *g,
buf_size,
0,
gk20a_mem_flag_none,
NVGPU_VM_MAP_ACCESS_READ_WRITE,
NVGPU_VM_MAP_CACHEABLE,
NV_KIND_INVALID,
0,
@@ -399,6 +401,7 @@ int test_map_buffer_error_cases(struct unit_module *m, struct gk20a *g,
buf_size,
0,
gk20a_mem_flag_none,
NVGPU_VM_MAP_ACCESS_READ_WRITE,
NVGPU_VM_MAP_CACHEABLE,
NV_KIND_INVALID,
0,
@@ -420,6 +423,7 @@ int test_map_buffer_error_cases(struct unit_module *m, struct gk20a *g,
SZ_1G,
0,
gk20a_mem_flag_none,
NVGPU_VM_MAP_ACCESS_READ_WRITE,
NVGPU_VM_MAP_CACHEABLE,
NV_KIND_INVALID,
0,
@@ -441,6 +445,7 @@ int test_map_buffer_error_cases(struct unit_module *m, struct gk20a *g,
buf_size,
0,
gk20a_mem_flag_none,
NVGPU_VM_MAP_ACCESS_READ_WRITE,
NVGPU_VM_MAP_CACHEABLE,
NVGPU_KIND_INVALID,
NVGPU_KIND_INVALID,
@@ -463,6 +468,7 @@ int test_map_buffer_error_cases(struct unit_module *m, struct gk20a *g,
buf_size,
0,
gk20a_mem_flag_none,
NVGPU_VM_MAP_ACCESS_READ_WRITE,
NVGPU_VM_MAP_CACHEABLE,
NV_KIND_INVALID,
0,
@@ -616,6 +622,7 @@ static int map_buffer(struct unit_module *m,
buf_size,
0,
gk20a_mem_flag_none,
NVGPU_VM_MAP_ACCESS_READ_WRITE,
flags,
compr_kind,
0,
@@ -641,6 +648,7 @@ static int map_buffer(struct unit_module *m,
buf_size,
0,
gk20a_mem_flag_none,
NVGPU_VM_MAP_ACCESS_READ_WRITE,
flags,
compr_kind,
0,