gpu: nvgpu: handle vf curve change due to temp

JIRA DNVGPU-129

1)Add function hook for PMU VFE event handler which will do for VF
curve re-evaluation

2)Add function hook to send temperature limit of GPU sensor

3)Call VFE event handler from PMU's event handle function

Change-Id: I2e3577d3d895e97e6ad06e92f0f4827f9855d0b6
Signed-off-by: Vijayakumar <vsubbu@nvidia.com>
Reviewed-on: http://git-master/r/1245393
(cherry picked from commit 1a5c6c32cdec73fb23735430f43577eda675e5af)
Reviewed-on: http://git-master/r/1268060
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

3 files changed, 15 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 02d3ffe0..ed3a1d2d 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -589,6 +589,8 @@ struct gpu_ops {
                 int (*elcg_init_idle_filters)(struct gk20a *g);
                 void (*therm_debugfs_init)(struct gk20a *g);
                 int (*get_internal_sensor_curr_temp)(struct gk20a *g, u32 *temp_f24_8);
+                void (*get_internal_sensor_limits)(s32 *max_24_8,
+                                                        s32 *min_24_8);
         } therm;
         struct {
                 bool (*is_pmu_supported)(struct gk20a *g);
@@ -642,6 +644,9 @@ struct gpu_ops {
                 int (*get_arbiter_clk_default)(struct gk20a *g, u32 api_domain,
                                 u16 *default_mhz);
         } clk_arb;
+        struct {
+                int (*handle_pmu_perf_event)(struct gk20a *g, void *pmu_msg);
+        } perf;
         bool privsecurity;
         bool securegpccs;
         bool pmupstate;
diff --git a/drivers/gpu/nvgpu/gk20a/pmu_gk20a.c b/drivers/gpu/nvgpu/gk20a/pmu_gk20a.c
index 1e9f291f..1d580dae 100644
--- a/drivers/gpu/nvgpu/gk20a/pmu_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/pmu_gk20a.c
@@ -3976,14 +3976,22 @@ static int pmu_handle_perfmon_event(struct pmu_gk20a *pmu,
 static int pmu_handle_event(struct pmu_gk20a *pmu, struct pmu_msg *msg)
 {
         int err = 0;
+        struct gk20a *g = gk20a_from_pmu(pmu);
 
         gk20a_dbg_fn("");
-
         switch (msg->hdr.unit_id) {
         case PMU_UNIT_PERFMON:
         case PMU_UNIT_PERFMON_T18X:
                 err = pmu_handle_perfmon_event(pmu, &msg->msg.perfmon);
                 break;
+        case PMU_UNIT_PERF:
+                if (g->ops.perf.handle_pmu_perf_event != NULL) {
+                        err = g->ops.perf.handle_pmu_perf_event(g,
+                                (void *)&msg->msg.perf);
+                } else {
+                        WARN_ON(1);
+                }
+                break;
         default:
                 break;
         }
diff --git a/drivers/gpu/nvgpu/pmuif/gpmuifperf.h b/drivers/gpu/nvgpu/pmuif/gpmuifperf.h
index b1d2f3fd..181a65f5 100644
--- a/drivers/gpu/nvgpu/pmuif/gpmuifperf.h
+++ b/drivers/gpu/nvgpu/pmuif/gpmuifperf.h
@@ -87,6 +87,7 @@ struct nv_pmu_perf_rpc {
 #define NV_PMU_PERF_MSG_ID_RPC                                      (0x00000003)
 #define NV_PMU_PERF_MSG_ID_BOARDOBJ_GRP_SET                         (0x00000004)
 #define NV_PMU_PERF_MSG_ID_BOARDOBJ_GRP_GET_STATUS                  (0x00000006)
+#define NV_PMU_PERF_MSG_ID_VFE_CALLBACK                             (0x00000005)
 
 /*!
 * Message carrying the result of the perf RPC execution.