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gpu: nvgpu: add user API to get a syncpoint

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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 <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1658009
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Deepak Nibade
2018-02-13 04:02:38 -08:00
committed by mobile promotions
parent 180604fec0
commit 8d5536271f
10 changed files with 111 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
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@@ -294,6 +294,13 @@ static int gk20a_channel_syncpt_id(struct gk20a_channel_sync *s)
return sp->id;
}
static u64 gk20a_channel_syncpt_address(struct gk20a_channel_sync *s)
{
struct gk20a_channel_syncpt *sp =
container_of(s, struct gk20a_channel_syncpt, ops);
return sp->syncpt_buf.gpu_va;
}
static void gk20a_channel_syncpt_destroy(struct gk20a_channel_sync *s)
{
struct gk20a_channel_syncpt *sp =
@@ -345,6 +352,7 @@ gk20a_channel_syncpt_create(struct channel_gk20a *c)
sp->ops.set_min_eq_max = gk20a_channel_syncpt_set_min_eq_max;
sp->ops.signal_timeline = gk20a_channel_syncpt_signal_timeline;
sp->ops.syncpt_id = gk20a_channel_syncpt_id;
sp->ops.syncpt_address = gk20a_channel_syncpt_address;
sp->ops.destroy = gk20a_channel_syncpt_destroy;
return &sp->ops;
@@ -865,6 +873,11 @@ static int gk20a_channel_semaphore_syncpt_id(struct gk20a_channel_sync *s)
return -EINVAL;
}
static u64 gk20a_channel_semaphore_syncpt_address(struct gk20a_channel_sync *s)
{
return 0;
}
static void gk20a_channel_semaphore_destroy(struct gk20a_channel_sync *s)
{
struct gk20a_channel_semaphore *sema =
@@ -916,6 +929,7 @@ gk20a_channel_semaphore_create(struct channel_gk20a *c)
sema->ops.set_min_eq_max = gk20a_channel_semaphore_set_min_eq_max;
sema->ops.signal_timeline = gk20a_channel_semaphore_signal_timeline;
sema->ops.syncpt_id = gk20a_channel_semaphore_syncpt_id;
sema->ops.syncpt_address = gk20a_channel_semaphore_syncpt_address;
sema->ops.destroy = gk20a_channel_semaphore_destroy;
return &sema->ops;