gpu: nvgpu: add TSG interleave support

Add support for changing a TSG's runlist interleave
level.

JIRA VFND-1497
Bug 1749744

Change-Id: I3cf3ebc2334f83b1bfb6b3230fae2ca73c75c239
Signed-off-by: Aingara Paramakuru <aparamakuru@nvidia.com>
Reviewed-on: http://git-master/r/1122677
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

2 files changed, 37 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/tsg_gk20a.c b/drivers/gpu/nvgpu/gk20a/tsg_gk20a.c
index 7b98c80f..0eaa23ab 100644
--- a/drivers/gpu/nvgpu/gk20a/tsg_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/tsg_gk20a.c
@@ -325,6 +325,26 @@ static int gk20a_tsg_event_id_ctrl(struct gk20a *g, struct tsg_gk20a *tsg,
         return err;
 }
 
+static int gk20a_tsg_set_runlist_interleave(struct tsg_gk20a *tsg, u32 level)
+{
+        struct gk20a *g = tsg->g;
+        int ret;
+
+        switch (level) {
+        case NVGPU_RUNLIST_INTERLEAVE_LEVEL_LOW:
+        case NVGPU_RUNLIST_INTERLEAVE_LEVEL_MEDIUM:
+        case NVGPU_RUNLIST_INTERLEAVE_LEVEL_HIGH:
+                ret = g->ops.fifo.set_runlist_interleave(g, tsg->tsgid,
+                                                        true, 0, level);
+                break;
+        default:
+                ret = -EINVAL;
+                break;
+        }
+
+        return ret ? ret : g->ops.fifo.update_runlist(g, 0, ~0, true, true);
+}
+
 static void release_used_tsg(struct fifo_gk20a *f, struct tsg_gk20a *tsg)
 {
         mutex_lock(&f->tsg_inuse_mutex);
@@ -520,6 +540,20 @@ long gk20a_tsg_dev_ioctl(struct file *filp, unsigned int cmd,
                 break;
                 }
 
+        case NVGPU_IOCTL_TSG_SET_RUNLIST_INTERLEAVE:
+                {
+                err = gk20a_busy(g->dev);
+                if (err) {
+                        gk20a_err(dev_from_gk20a(g),
+                           "failed to host gk20a for ioctl cmd: 0x%x", cmd);
+                        return err;
+                }
+                err = gk20a_tsg_set_runlist_interleave(tsg,
+                        ((struct nvgpu_runlist_interleave_args *)buf)->level);
+                gk20a_idle(g->dev);
+                break;
+                }
+
         default:
                 gk20a_err(dev_from_gk20a(g),
                            "unrecognized tsg gpu ioctl cmd: 0x%x",
diff --git a/include/uapi/linux/nvgpu.h b/include/uapi/linux/nvgpu.h
index cf89b9d8..16d60261 100644
--- a/include/uapi/linux/nvgpu.h
+++ b/include/uapi/linux/nvgpu.h
@@ -465,11 +465,13 @@ struct nvgpu_gpu_get_gpu_time_args {
         _IOW(NVGPU_TSG_IOCTL_MAGIC, 6, struct nvgpu_set_priority_args)
 #define NVGPU_IOCTL_TSG_EVENT_ID_CTRL \
         _IOWR(NVGPU_TSG_IOCTL_MAGIC, 7, struct nvgpu_event_id_ctrl_args)
+#define NVGPU_IOCTL_TSG_SET_RUNLIST_INTERLEAVE \
+        _IOW(NVGPU_TSG_IOCTL_MAGIC, 8, struct nvgpu_runlist_interleave_args)
 
 #define NVGPU_TSG_IOCTL_MAX_ARG_SIZE    \
         sizeof(struct nvgpu_event_id_ctrl_args)
 #define NVGPU_TSG_IOCTL_LAST            \
-        _IOC_NR(NVGPU_IOCTL_TSG_EVENT_ID_CTRL)
+        _IOC_NR(NVGPU_IOCTL_TSG_SET_RUNLIST_INTERLEAVE)
 
 
 /*