gpu: nvgpu: add HAL to insert semaphore commands

Add below new HALs
gops.fifo.add_sema_cmd() to insert HOST semaphore acquire/release methods
gops.fifo.get_sema_wait_cmd_size() to get size of acquire command buffer
gops.fifo.get_sema_incr_cmd_size() to get size of release command buffer

Separate out new API gk20a_fifo_add_sema_cmd() to implement semaphore acquire/
release sequence and set it to gops.fifo.add_sema_cmd()

Add gk20a_fifo_get_sema_wait_cmd_size() and gk20a_fifo_get_sema_incr_cmd_size()
to return respective command buffer sizes

Jira NVGPUT-16

Change-Id: Ia81a50921a6a56ebc237f2f90b137268aaa2d749
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1704490
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/os_fence_android_sema.c b/drivers/gpu/nvgpu/common/linux/os_fence_android_sema.c
index 2bb71c99..25832417 100644
--- a/drivers/gpu/nvgpu/common/linux/os_fence_android_sema.c
+++ b/drivers/gpu/nvgpu/common/linux/os_fence_android_sema.c
@@ -34,12 +34,14 @@ int nvgpu_os_fence_sema_wait_gen_cmd(struct nvgpu_os_fence *s,
         int max_wait_cmds)
 {
         int err;
-        const int wait_cmd_size = 8;
+        int wait_cmd_size;
         int num_wait_cmds;
         int i;
         struct nvgpu_semaphore *sema;
         struct sync_fence *sync_fence = nvgpu_get_sync_fence(s);
 
+        wait_cmd_size = c->g->ops.fifo.get_sema_wait_cmd_size();
+
         num_wait_cmds = sync_fence->num_fences;
         if (num_wait_cmds == 0)
                 return 0;