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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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79
include/uapi/linux/nvgpu.h
View File

@@ -193,6 +193,77 @@ struct nvgpu_tsg_delete_subcontext_args {
__u32 reserved;
};
/*
* NVGPU_TSG_IOCTL_GET_SHARE_TOKEN - get TSG share token ioctl.
*
* This IOCTL creates a TSG share token. The TSG share token may be
* specified when opening new TSG fds with NVGPU_GPU_IOCTL_OPEN_TSG.
* In this case, the underlying HW TSG will be shared.
*
* The source_device_instance_id is checked to be authorized while
* creating share token.
*
* TBD: TSG share tokens have an expiration time. This is controlled
* by /sys/kernel/debug/<gpu>/tsg_share_token_timeout_ms. The default
* timeout is 30000 ms on silicon platforms and 0 (= no timeout) on
* pre-silicon platforms.
*
* When the TSG is closed, all share tokens on the TSG will be
* invalidated. Share token can also be invalidated by calling
* the ioctl NVGPU_TSG_IOCTL_REVOKE_SHARE_TOKEN.
*
* When creating a TSG fd with share token, it is ensured that
* target_device_instance_id specified here matches with the
* device instance id that is used to call the ioctl
* NVGPU_GPU_IOCTL_OPEN_TSG. This will secure the sharing of
* the TSG within trusted parties.
*
* Note: share token is unique in the context of the source and
* target device instance ids for a TSG.
*
* return 0 on success, -1 on error.
* retval EINVAL if invalid parameters are specified.
* (if any of the device id argument is zero or
* unauthorized device).
*/
/* Arguments for NVGPU_TSG_IOCTL_GET_SHARE_TOKEN */
struct nvgpu_tsg_get_share_token_args {
/* in: Source (exporter) device id */
__u64 source_device_instance_id;
/* in: Target (importer) device id */
__u64 target_device_instance_id;
/* out: Share token */
__u64 share_token;
};
/*
* NVGPU_TSG_IOCTL_REVOKE_SHARE_TOKEN - revoke TSG share token ioctl.
*
* This IOCTL revokes a TSG share token. It is intended to be called
* whe the share token data exchange with the other end point is
* unsuccessful.
*
* return 0 on success, -1 on error.
* retval EINVAL if invalid parameters are specified.
* (if any of the argument is zero or unauthorized device).
* retval EINVAL if share token doesn't exist or is expired.
*/
/* Arguments for NVGPU_TSG_IOCTL_REVOKE_SHARE_TOKEN */
struct nvgpu_tsg_revoke_share_token_args {
/* in: Source (exporter) device id */
__u64 source_device_instance_id;
/* in: Target (importer) device id */
__u64 target_device_instance_id;
/* in: Share token */
__u64 share_token;
};
#define NVGPU_TSG_IOCTL_BIND_CHANNEL \
_IOW(NVGPU_TSG_IOCTL_MAGIC, 1, int)
#define NVGPU_TSG_IOCTL_UNBIND_CHANNEL \
@@ -237,11 +308,17 @@ struct nvgpu_tsg_delete_subcontext_args {
#define NVGPU_TSG_IOCTL_DELETE_SUBCONTEXT \
_IOW(NVGPU_TSG_IOCTL_MAGIC, 19, \
struct nvgpu_tsg_delete_subcontext_args)
#define NVGPU_TSG_IOCTL_GET_SHARE_TOKEN \
_IOWR(NVGPU_TSG_IOCTL_MAGIC, 20, \
struct nvgpu_tsg_get_share_token_args)
#define NVGPU_TSG_IOCTL_REVOKE_SHARE_TOKEN \
_IOW(NVGPU_TSG_IOCTL_MAGIC, 21, \
struct nvgpu_tsg_revoke_share_token_args)
#define NVGPU_TSG_IOCTL_MAX_ARG_SIZE \
sizeof(struct nvgpu_tsg_bind_scheduling_domain_args)
#define NVGPU_TSG_IOCTL_LAST \
_IOC_NR(NVGPU_TSG_IOCTL_DELETE_SUBCONTEXT)
_IOC_NR(NVGPU_TSG_IOCTL_REVOKE_SHARE_TOKEN)
/*
* /dev/nvhost-dbg-gpu device