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gpu: nvgpu: UAPI specification for TSG sharing

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Add below ioctls for TSG share token management:
1. NVGPU_TSG_IOCTL_GET_SHARE_TOKEN
2. NVGPU_TSG_IOCTL_REVOKE_SHARE_TOKEN

Update the ioctl NVGPU_GPU_IOCTL_OPEN_TSG to consider
the creation of TSG with share token.

Bug 3677982
JIRA NVGPU-8681

Change-Id: I436217061bc0e9f6424ea793cf7efbc3368d0817
Signed-off-by: Sami Kiminki <skiminki@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2792078
Tested-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-by: Scott Long <scottl@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Sami Kiminki
2022-09-26 17:46:58 +05:30
committed by mobile promotions
parent 675edd5053
commit 31a4701931
2 changed files with 126 additions and 3 deletions
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50
include/uapi/linux/nvgpu-ctrl.h
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@@ -434,9 +434,55 @@ struct nvgpu_alloc_as_args {
__u32 padding[6];
};
/*
* NVGPU_GPU_IOCTL_OPEN_TSG - create/share TSG ioctl.
*
* This IOCTL allocates one of the available TSG for user when called
* without share token specified. When called with share token specified,
* fd is created for already allocated TSG for sharing the TSG under
* different device/CTRL object hierarchies in different processes.
*
* Source device is specified in the arguments and target device is
* implied from the caller. Share token is unique for a TSG.
*
* When the TSG is successfully created first time or is opened with share
* token, the device instance id associated with the CTRL fd will be added
* to the TSG private data structure as authorized device instance ids.
* This is used for a security check when creating a TSG share token with
* nvgpu_tsg_get_share_token.
*
* return 0 on success, -1 on error.
* retval EINVAL if invalid parameters are specified (if TSG_FLAGS_SHARE
* is set but source_device_instance_id and/or share token
* are zero or TSG_FLAGS_SHARE is not set but other
* arguments are non-zero).
* retval EINVAL if share token doesn't exist or is expired.
*/
/*
* Specify that the newly created TSG fd will map to existing hardware
* TSG resources.
*/
#define NVGPU_GPU_IOCTL_OPEN_TSG_FLAGS_SHARE ((__u32)1U << 0U)
/* Arguments for NVGPU_GPU_IOCTL_OPEN_TSG */
struct nvgpu_gpu_open_tsg_args {
__u32 tsg_fd; /* out, tsg fd */
__u32 reserved; /* must be zero */
__u32 tsg_fd; /* out: tsg fd */
__u32 flags; /* in: NVGPU_GPU_IOCTL_OPEN_TSG_FLAGS_* */
__u64 source_device_instance_id; /*
* in: source device instance id
* that created the token. Ignored when
* NVGPU_GPU_IOCTL_OPEN_TSG_FLAGS_SHARE
* is unset.
*/
__u64 share_token; /*
* in: share token obtained from
* NVGPU_TSG_IOCTL_GET_SHARE_TOKEN. Ignored when
* NVGPU_GPU_IOCTL_OPEN_TSG_FLAGS_SHARE
* is unset.
*/
};
struct nvgpu_gpu_get_tpc_masks_args {