gpu: nvgpu: add tsg_open HAL interface

Add HAL interface for TSG open, which is intended to
be called from the exisiting gk20a_tsg_open function.

The tsg_open entryoint is only implemented for vgpu,
as the server needs to clear metadata when a tsg is opened.

Bug 200215060

Change-Id: Icc8fd602f31e52d9fa9b2e7786b665b9e7b9294e
Signed-off-by: Sachit Kadle <skadle@nvidia.com>
Reviewed-on: http://git-master/r/1249218
(cherry picked from commit 35c86f7c796c6574d3dc336e20012ea5c16d7cb4)
Reviewed-on: http://git-master/r/1256468
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/tsg_vgpu.c b/drivers/gpu/nvgpu/vgpu/tsg_vgpu.c
index 2033fd7a..9daf9e6d 100644
--- a/drivers/gpu/nvgpu/vgpu/tsg_vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/tsg_vgpu.c
@@ -23,6 +23,28 @@
 #include "gk20a/tsg_gk20a.h"
 #include "vgpu.h"
 
+static int vgpu_tsg_open(struct tsg_gk20a *tsg)
+{
+        struct tegra_vgpu_cmd_msg msg = {};
+        struct tegra_vgpu_tsg_open_params *p =
+                                &msg.params.tsg_open;
+        int err;
+
+        gk20a_dbg_fn("");
+
+        msg.cmd = TEGRA_VGPU_CMD_TSG_OPEN;
+        msg.handle = vgpu_get_handle(tsg->g);
+        p->tsg_id = tsg->tsgid;
+        err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
+        err = err ? err : msg.ret;
+        if (err) {
+                gk20a_err(dev_from_gk20a(tsg->g),
+                        "vgpu_tsg_open failed, tsgid %d", tsg->tsgid);
+        }
+
+        return err;
+}
+
 static int vgpu_tsg_bind_channel(struct tsg_gk20a *tsg,
                         struct channel_gk20a *ch)
 {
@@ -101,4 +123,5 @@ void vgpu_init_tsg_ops(struct gpu_ops *gops)
         gops->fifo.tsg_bind_channel = vgpu_tsg_bind_channel;
         gops->fifo.tsg_unbind_channel = vgpu_tsg_unbind_channel;
         gops->fifo.tsg_set_timeslice = vgpu_tsg_set_timeslice;
+        gops->fifo.tsg_open = vgpu_tsg_open;
 }