gpu: nvgpu: vgpu: add general event support

Events like bpt int/pause will help cuda work properly.

Bug 200173403
VFND-1568

Change-Id: I29e534969028bf08aedd81c99f5a536779f431d1
Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-on: http://git-master/r/1159621
(cherry picked from commit a266e53c514639e15ed166e2c8ce5a55efc48eda)
Reviewed-on: http://git-master/r/1152154
Reviewed-by: Aingara Paramakuru <aparamakuru@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/vgpu.c b/drivers/gpu/nvgpu/vgpu/vgpu.c
index aa4ece5f..0d5dd27b 100644
--- a/drivers/gpu/nvgpu/vgpu/vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/vgpu.c
@@ -23,6 +23,8 @@
 #include "gk20a/hal_gk20a.h"
 #include "gk20a/hw_mc_gk20a.h"
 #include "gk20a/ctxsw_trace_gk20a.h"
+#include "gk20a/tsg_gk20a.h"
+#include "gk20a/channel_gk20a.h"
 #include "gm20b/hal_gm20b.h"
 
 #ifdef CONFIG_ARCH_TEGRA_18x_SOC
@@ -97,6 +99,32 @@ int vgpu_get_attribute(u64 handle, u32 attrib, u32 *value)
         return 0;
 }
 
+static void vgpu_handle_general_event(struct gk20a *g,
+                        struct tegra_vgpu_general_event_info *info)
+{
+        if (info->id >= g->fifo.num_channels ||
+                info->event_id >= NVGPU_IOCTL_CHANNEL_EVENT_ID_MAX) {
+                gk20a_err(g->dev, "invalid general event");
+                return;
+        }
+
+        if (info->is_tsg) {
+                struct tsg_gk20a *tsg = &g->fifo.tsg[info->id];
+
+                gk20a_tsg_event_id_post_event(tsg, info->event_id);
+        } else {
+                struct channel_gk20a *ch = &g->fifo.channel[info->id];
+
+                if (!gk20a_channel_get(ch)) {
+                        gk20a_err(g->dev, "invalid channel %d for event %d",
+                                        (int)info->id, (int)info->event_id);
+                        return;
+                }
+                gk20a_channel_event_id_post_event(ch, info->event_id);
+                gk20a_channel_put(ch);
+        }
+}
+
 static int vgpu_intr_thread(void *dev_id)
 {
         struct gk20a *g = dev_id;
@@ -127,6 +155,12 @@ static int vgpu_intr_thread(void *dev_id)
                         continue;
                 }
 
+                if (msg->event == TEGRA_VGPU_EVENT_CHANNEL) {
+                        vgpu_handle_general_event(g, &msg->info.general_event);
+                        tegra_gr_comm_release(handle);
+                        continue;
+                }
+
                 if (msg->unit == TEGRA_VGPU_INTR_GR)
                         vgpu_gr_isr(g, &msg->info.gr_intr);
                 else if (msg->unit == TEGRA_VGPU_NONSTALL_INTR_GR)