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nvdla: kmd: set DMA direction based on access type

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Based on access permission requested through pin, DMA direction
is set. This allows setting a reduced access permission for DLA
firmware and/or hardware.

Jira DLA-5775

Change-Id: Ie28e9da87325f36de12269eab1487407f6272053
Signed-off-by: Arvind M <am@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2682040
Reviewed-by: Amit Sharma (SW-TEGRA) <amisharma@nvidia.com>
Reviewed-by: Praveen K <kpraveen@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Ken Adams <kadams@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Arvind M
2022-03-15 21:28:56 +05:30
committed by Laxman Dewangan
parent 1c9a3507d5
commit 3349513ab1
2 changed files with 21 additions and 2 deletions
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4
include/uapi/linux/nvhost_nvdla_ioctl.h
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@@ -75,6 +75,10 @@ struct nvdla_ping_args {
struct nvdla_mem_share_handle {
__u32 share_id;
__u32 offset;
#define NVDLA_MEM_ACCESS_NONE (0U)
#define NVDLA_MEM_ACCESS_READ (1U << 0U)
#define NVDLA_MEM_ACCESS_WRITE (1U << 1U)
#define NVDLA_MEM_ACCESS_READ_WRITE (NVDLA_MEM_ACCESS_READ | NVDLA_MEM_ACCESS_WRITE)
__u32 access_flags;
__u32 import_id;
};