4 Commits

Author	SHA1	Message	Date
Debarshi Dutta	3f2e287235	gpu: nvgpu: add missing necessary callbacks for DMA_BUF export ... DMA_BUF export needs some of the callbacks to be non-NULL such as map_dma_buf, unmap_dma_buf and release callbacks. Absence of gives gives a Warning and returns a failure. Jira NVGPU-8619 Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Change-Id: Iea109cbfe06c1b2eb8741c727b52fcfd0ffece8e Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2815108 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com> Reviewed-by: Sagar Kamble <skamble@nvidia.com> Reviewed-by: Vaibhav Kachore <vkachore@nvidia.com> GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com> Tested-by: Prateek Sethi <prsethi@nvidia.com>	2022-11-30 10:43:35 -08:00
prsethi	de0808ea5b	gpu:nvgpu: fix below issue with ctrl nvs. ... - Move queue lock at correct place. - Free the allocated memory. Jira NVGPU-8622 Change-Id: Ia996d80498e53fb21ddf1f1202abd6fb8e3f6168 Signed-off-by: prsethi <prsethi@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2791618 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svcacv <svcacv@nvidia.com> Reviewed-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-by: Ankur Kishore <ankkishore@nvidia.com> GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>	2022-10-28 15:28:46 -07:00
Debarshi Dutta	3d95f2b803	gpu: nvgpu: add support for event queue observers ... Add support for accessing Event Queue for non-exclusive users. Allows, non-exclusive users to open Event Queues before exclusive users. Non-Exclusive users can only use the Event Queue in a read-only mode. Add VM_SHARED for Event Queues across all users instead of just Read-Only users. Event queues are shared with multiple processes and as such require VM_SHARED across all users(exclusive and observers). Jira NVGPU-8608 Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Change-Id: Id9733c2511ded6f06dd9feea880005bdc92e51a0 Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2745083 Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> GVS: Gerrit_Virtual_Submit	2022-07-29 00:04:51 -07:00
Debarshi Dutta	e7f9de6567	gpu: nvgpu: add control-fifo queues ... Added implementation for following IOCTLs NVGPU_NVS_CTRL_FIFO_CREATE_QUEUE NVGPU_NVS_CTRL_FIFO_RELEASE_QUEUE The above ioctls are supported only for users with R/W permissions. 1) NVGPU_NVS_CTRL_FIFO_CREATE_QUEUE constructs a memory region via the nvgpu_dma_alloc_sys() API and creates the corresponding GPU and kernel mappings. Upon successful creation, KMD exports this buffer to the userspace via a dmabuf fd that the UMD can use to mmap it into its process address space. 2) Added plumbing to store VMA's corresponding to different users for event queue in future. 3) Added necessary validation checks for the IOCTLs 4) NVGPU_NVS_CTRL_FIFO_RELEASE_QUEUE is used to clear the queues. 5) Using a global queue lock to protect access to the queues. This could be modified to be more fine-grained in future when there is more clarity on GSP's implementation and access of queues. 6) Added plumbing to enable user subscription to queues. NVGPU_NVS_CTRL_FIFO_RELEASE_QUEUE is used to unsubscribe the user from the queue. Once, the last user is deleted, all the queues will be cleared. User must ensure that any mappings are removed before calling release queue. 7) Set the default queue_size for event queues to PAGE_SIZE. This can be modified later. For event queues, UMD shall fetch the queue_size. Jira NVGPU-8129 Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Change-Id: I31633174e960ec6feb77caede9d143b3b3c145d7 Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2723198 Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> GVS: Gerrit_Virtual_Submit	2022-07-15 07:08:32 -07:00