From 8d5536271f989e01018a543016340a3d76a2fae2 Mon Sep 17 00:00:00 2001 From: Deepak Nibade Date: Tue, 13 Feb 2018 04:02:38 -0800 Subject: gpu: nvgpu: add user API to get a syncpoint Add new user API NVGPU_IOCTL_CHANNEL_GET_USER_SYNCPOINT which will expose per-channel allocated syncpoint to user space API will also return current value of the syncpoint On supported platforms, this API will also return a RW semaphore address (corresponding to syncpoint shim) to user space Add new characteristics flag NVGPU_GPU_FLAGS_SUPPORT_USER_SYNCPOINT to indicate support for this new API Add new flag NVGPU_SUPPORT_USER_SYNCPOINT for use of core driver Set this flag for GV11B and GP10B for now Add a new API (*syncpt_address) in struct gk20a_channel_sync to get GPU_VA address of a syncpoint Add new API nvgpu_nvhost_syncpt_read_maxval() which will read and return MAX value of syncpoint Bug 200326065 Jira NVGPU-179 Change-Id: I9da6f17b85996f4fc6731c0bf94fca6f3181c3e0 Signed-off-by: Deepak Nibade Reviewed-on: https://git-master.nvidia.com/r/1658009 Reviewed-by: svc-mobile-coverity GVS: Gerrit_Virtual_Submit Reviewed-by: Konsta Holtta Reviewed-by: Vijayakumar Subbu Reviewed-by: mobile promotions Tested-by: mobile promotions --- drivers/gpu/nvgpu/common/linux/nvhost.c | 6 ++++++ 1 file changed, 6 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 e0f83612..94bbfd70 100644 --- a/drivers/gpu/nvgpu/common/linux/nvhost.c +++ b/drivers/gpu/nvgpu/common/linux/nvhost.c @@ -152,6 +152,12 @@ int nvgpu_nvhost_syncpt_read_ext_check( return nvhost_syncpt_read_ext_check(nvhost_dev->host1x_pdev, id, val); } +u32 nvgpu_nvhost_syncpt_read_maxval( + struct nvgpu_nvhost_dev *nvhost_dev, u32 id) +{ + return nvhost_syncpt_read_maxval(nvhost_dev->host1x_pdev, id); +} + int nvgpu_nvhost_create_symlink(struct gk20a *g) { struct device *dev = dev_from_gk20a(g); -- cgit v1.2.2