habanalabs: add print upon clock change

Add print upon clock slow down due to power consumption or overheating.
In addition, add print when back to optimal clock.

Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>

diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c
index 9d4295c..68f0656 100644 (file)
--- a/drivers/misc/habanalabs/goya/goya.c
+++ b/drivers/misc/habanalabs/goya/goya.c
@@ -324,7 +324,11 @@ static u32 goya_all_events[] = {
        GOYA_ASYNC_EVENT_ID_DMA_BM_CH1,
        GOYA_ASYNC_EVENT_ID_DMA_BM_CH2,
        GOYA_ASYNC_EVENT_ID_DMA_BM_CH3,
-       GOYA_ASYNC_EVENT_ID_DMA_BM_CH4
+       GOYA_ASYNC_EVENT_ID_DMA_BM_CH4,
+       GOYA_ASYNC_EVENT_ID_FIX_POWER_ENV_S,
+       GOYA_ASYNC_EVENT_ID_FIX_POWER_ENV_E,
+       GOYA_ASYNC_EVENT_ID_FIX_THERMAL_ENV_S,
+       GOYA_ASYNC_EVENT_ID_FIX_THERMAL_ENV_E
 };
 
 static int goya_mmu_clear_pgt_range(struct hl_device *hdev);
@@ -4389,6 +4393,14 @@ static const char *_goya_get_event_desc(u16 event_type)
                return "TPC%d_bmon_spmu";
        case GOYA_ASYNC_EVENT_ID_DMA_BM_CH0 ... GOYA_ASYNC_EVENT_ID_DMA_BM_CH4:
                return "DMA_bm_ch%d";
+       case GOYA_ASYNC_EVENT_ID_FIX_POWER_ENV_S:
+               return "POWER_ENV_S";
+       case GOYA_ASYNC_EVENT_ID_FIX_POWER_ENV_E:
+               return "POWER_ENV_E";
+       case GOYA_ASYNC_EVENT_ID_FIX_THERMAL_ENV_S:
+               return "THERMAL_ENV_S";
+       case GOYA_ASYNC_EVENT_ID_FIX_THERMAL_ENV_E:
+               return "THERMAL_ENV_E";
        default:
                return "N/A";
        }
@@ -4619,6 +4631,33 @@ static int goya_unmask_irq(struct hl_device *hdev, u16 event_type)
        return rc;
 }
 
+static void goya_print_clk_change_info(struct hl_device *hdev, u16 event_type)
+{
+       switch (event_type) {
+       case GOYA_ASYNC_EVENT_ID_FIX_POWER_ENV_S:
+               dev_info_ratelimited(hdev->dev,
+                       "Clock throttling due to power consumption\n");
+               break;
+       case GOYA_ASYNC_EVENT_ID_FIX_POWER_ENV_E:
+               dev_info_ratelimited(hdev->dev,
+                       "Power envelop is safe, back to optimal clock\n");
+               break;
+       case GOYA_ASYNC_EVENT_ID_FIX_THERMAL_ENV_S:
+               dev_info_ratelimited(hdev->dev,
+                       "Clock throttling due to overheating\n");
+               break;
+       case GOYA_ASYNC_EVENT_ID_FIX_THERMAL_ENV_E:
+               dev_info_ratelimited(hdev->dev,
+                       "Thermal envelop is safe, back to optimal clock\n");
+               break;
+
+       default:
+               dev_err(hdev->dev, "Received invalid clock change event %d\n",
+                       event_type);
+               break;
+       }
+}
+
 void goya_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_entry)
 {
        u32 ctl = le32_to_cpu(eq_entry->hdr.ctl);
@@ -4702,6 +4741,14 @@ void goya_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_entry)
                goya_unmask_irq(hdev, event_type);
                break;
 
+       case GOYA_ASYNC_EVENT_ID_FIX_POWER_ENV_S:
+       case GOYA_ASYNC_EVENT_ID_FIX_POWER_ENV_E:
+       case GOYA_ASYNC_EVENT_ID_FIX_THERMAL_ENV_S:
+       case GOYA_ASYNC_EVENT_ID_FIX_THERMAL_ENV_E:
+               goya_print_clk_change_info(hdev, event_type);
+               goya_unmask_irq(hdev, event_type);
+               break;
+
        default:
                dev_err(hdev->dev, "Received invalid H/W interrupt %d\n",
                                event_type);

diff --git a/drivers/misc/habanalabs/include/goya/goya_async_events.h b/drivers/misc/habanalabs/include/goya/goya_async_events.h
index bb7a1aa..5fb9236 100644 (file)
--- a/drivers/misc/habanalabs/include/goya/goya_async_events.h
+++ b/drivers/misc/habanalabs/include/goya/goya_async_events.h
@@ -188,6 +188,10 @@ enum goya_async_event_id {
        GOYA_ASYNC_EVENT_ID_HALT_MACHINE = 485,
        GOYA_ASYNC_EVENT_ID_INTS_REGISTER = 486,
        GOYA_ASYNC_EVENT_ID_SOFT_RESET = 487,
+       GOYA_ASYNC_EVENT_ID_FIX_POWER_ENV_S = 507,
+       GOYA_ASYNC_EVENT_ID_FIX_POWER_ENV_E = 508,
+       GOYA_ASYNC_EVENT_ID_FIX_THERMAL_ENV_S = 509,
+       GOYA_ASYNC_EVENT_ID_FIX_THERMAL_ENV_E = 510,
        GOYA_ASYNC_EVENT_ID_LAST_VALID_ID = 1023,
        GOYA_ASYNC_EVENT_ID_SIZE
 };