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/common/linux/nvhost.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/gpu/nvgpu/common/linux/nvhost.c') diff --git a/drivers/gpu/nvgpu/common/linux/nvhost.c b/drivers/gpu/nvgpu/common/linux/nvhost.c index 94bbfd70..a76953e3 100644 --- a/drivers/gpu/nvgpu/common/linux/nvhost.c +++ b/drivers/gpu/nvgpu/common/linux/nvhost.c @@ -138,6 +138,14 @@ u32 nvgpu_nvhost_get_syncpt_host_managed( param, syncpt_name); } +u32 nvgpu_nvhost_get_syncpt_client_managed( + struct nvgpu_nvhost_dev *nvhost_dev, + const char *syncpt_name) +{ + return nvhost_get_syncpt_client_managed(nvhost_dev->host1x_pdev, + syncpt_name); +} + int nvgpu_nvhost_syncpt_wait_timeout_ext( struct nvgpu_nvhost_dev *nvhost_dev, u32 id, u32 thresh, u32 timeout, u32 *value, struct timespec *ts) -- cgit v1.2.2