gpu: nvgpu: vgpu: add channel enable support

Bug 200173403
VFND-1568

Change-Id: I3636a77bbbbd719e961dce5ca7ca7bdd5aa33881
Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-on: http://git-master/r/1159620
(cherry picked from commit b22fb6518da15a09c3e298213af5e60b8e6907a2)
Reviewed-on: http://git-master/r/1155403
Reviewed-by: Aingara Paramakuru <aparamakuru@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 18 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c b/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c
index dad9464a..9591c72a 100644
--- a/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c
@@ -102,6 +102,23 @@ static void vgpu_channel_free_inst(struct gk20a *g, struct channel_gk20a *ch)
         WARN_ON(err || msg.ret);
 }
 
+static void vgpu_channel_enable(struct channel_gk20a *ch)
+{
+        struct gk20a_platform *platform = gk20a_get_platform(ch->g->dev);
+        struct tegra_vgpu_cmd_msg msg;
+        struct tegra_vgpu_channel_config_params *p =
+                        &msg.params.channel_config;
+        int err;
+
+        gk20a_dbg_fn("");
+
+        msg.cmd = TEGRA_VGPU_CMD_CHANNEL_ENABLE;
+        msg.handle = platform->virt_handle;
+        p->handle = ch->virt_ctx;
+        err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
+        WARN_ON(err || msg.ret);
+}
+
 static void vgpu_channel_disable(struct channel_gk20a *ch)
 {
         struct gk20a_platform *platform = gk20a_get_platform(ch->g->dev);
@@ -741,7 +758,7 @@ void vgpu_init_fifo_ops(struct gpu_ops *gops)
 {
         gops->fifo.bind_channel = vgpu_channel_bind;
         gops->fifo.unbind_channel = vgpu_channel_unbind;
-        gops->fifo.enable_channel = NULL;
+        gops->fifo.enable_channel = vgpu_channel_enable;
         gops->fifo.disable_channel = vgpu_channel_disable;
         gops->fifo.alloc_inst = vgpu_channel_alloc_inst;
         gops->fifo.free_inst = vgpu_channel_free_inst;