From df2100018db1dba730937fe76464a8edf8ebf5dc Mon Sep 17 00:00:00 2001 From: Deepak Nibade Date: Wed, 28 Feb 2018 03:56:36 -0800 Subject: gpu: nvgpu: allocate separate client managed syncpoint for User We right now allocate a nvgpu managed syncpoint in c->sync and share that with user space But to avoid conflicts between user space and kernel space increments allocate a separate "client managed" syncpoint for User space in c->user_sync Add new API nvgpu_nvhost_get_syncpt_client_managed() to request a client managed syncpoint from nvhost. Note that nvhost/nvgpu do not keep track of MAX/threshold value of this syncpoint Update gk20a_channel_syncpt_create() to receive a flag to indicate whether a User space syncpoint is required or not Unset NVGPU_SUPPORT_USER_SYNCPOINT for gp10b since we don't want to allocate double syncpoints per channel on that platform For gv11b, once we move to use user space submits, support for c->sync will be dropped so we keep using only one syncpoint per channel Bug 200326065 Jira NVGPU-179 Change-Id: I78d94de4276db1c897ea2a4fe4c2db8b2a179722 Signed-off-by: Deepak Nibade Reviewed-on: https://git-master.nvidia.com/r/1665828 Reviewed-by: svc-mobile-coverity GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom Reviewed-by: mobile promotions Tested-by: mobile promotions --- drivers/gpu/nvgpu/include/nvgpu/nvhost.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/gpu/nvgpu/include') diff --git a/drivers/gpu/nvgpu/include/nvgpu/nvhost.h b/drivers/gpu/nvgpu/include/nvgpu/nvhost.h index cb70f436..d5b5831a 100644 --- a/drivers/gpu/nvgpu/include/nvgpu/nvhost.h +++ b/drivers/gpu/nvgpu/include/nvgpu/nvhost.h @@ -65,6 +65,8 @@ void nvgpu_nvhost_syncpt_put_ref_ext(struct nvgpu_nvhost_dev *nvhost_dev, u32 nvgpu_nvhost_get_syncpt_host_managed(struct nvgpu_nvhost_dev *nvhost_dev, u32 param, const char *syncpt_name); +u32 nvgpu_nvhost_get_syncpt_client_managed(struct nvgpu_nvhost_dev *nvhost_dev, + const char *syncpt_name); int nvgpu_nvhost_create_symlink(struct gk20a *g); void nvgpu_nvhost_remove_symlink(struct gk20a *g); -- cgit v1.2.2