From: Jack Morgenstein <jackm@dev.mellanox.co.il>
Date: Tue, 6 Mar 2012 13:50:49 +0000 (+0200)
Subject: mlx4_core: Report thermal error events
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5984be90046fa978d94a5ec08bbf8f760cff2b30;p=linux-beck.git

mlx4_core: Report thermal error events

Print an error message when a thermal error async event is reported by the HW.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Dotan Barak <dotanb@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
---

diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c
index 8fa41f3082cf..780b5adf8e7d 100644
--- a/drivers/net/ethernet/mellanox/mlx4/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/eq.c
@@ -79,7 +79,8 @@ enum {
 			       (1ull << MLX4_EVENT_TYPE_SRQ_LIMIT)	    | \
 			       (1ull << MLX4_EVENT_TYPE_CMD)		    | \
 			       (1ull << MLX4_EVENT_TYPE_COMM_CHANNEL)       | \
-			       (1ull << MLX4_EVENT_TYPE_FLR_EVENT))
+			       (1ull << MLX4_EVENT_TYPE_FLR_EVENT)	    | \
+			       (1ull << MLX4_EVENT_TYPE_FATAL_WARNING))
 
 static void eq_set_ci(struct mlx4_eq *eq, int req_not)
 {
@@ -443,6 +444,35 @@ static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq)
 			queue_work(priv->mfunc.master.comm_wq,
 				   &priv->mfunc.master.slave_flr_event_work);
 			break;
+
+		case MLX4_EVENT_TYPE_FATAL_WARNING:
+			if (eqe->subtype == MLX4_FATAL_WARNING_SUBTYPE_WARMING) {
+				if (mlx4_is_master(dev))
+					for (i = 0; i < dev->num_slaves; i++) {
+						mlx4_dbg(dev, "%s: Sending "
+							"MLX4_FATAL_WARNING_SUBTYPE_WARMING"
+							" to slave: %d\n", __func__, i);
+						if (i == dev->caps.function)
+							continue;
+						mlx4_slave_event(dev, i, eqe);
+					}
+				mlx4_err(dev, "Temperature Threshold was reached! "
+					"Threshold: %d celsius degrees; "
+					"Current Temperature: %d\n",
+					be16_to_cpu(eqe->event.warming.warning_threshold),
+					be16_to_cpu(eqe->event.warming.current_temperature));
+			} else
+				mlx4_warn(dev, "Unhandled event FATAL WARNING (%02x), "
+					  "subtype %02x on EQ %d at index %u. owner=%x, "
+					  "nent=0x%x, slave=%x, ownership=%s\n",
+					  eqe->type, eqe->subtype, eq->eqn,
+					  eq->cons_index, eqe->owner, eq->nent,
+					  eqe->slave_id,
+					  !!(eqe->owner & 0x80) ^
+					  !!(eq->cons_index & eq->nent) ? "HW" : "SW");
+
+			break;
+
 		case MLX4_EVENT_TYPE_EEC_CATAS_ERROR:
 		case MLX4_EVENT_TYPE_ECC_DETECT:
 		default:
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4.h b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
index c92269f8c057..ac2d6061268d 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
@@ -363,6 +363,10 @@ struct mlx4_eqe {
 		struct {
 			__be32	slave_id;
 		} __packed flr_event;
+		struct {
+			__be16  current_temperature;
+			__be16  warning_threshold;
+		} __packed warming;
 	}			event;
 	u8			slave_id;
 	u8			reserved3[2];
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 263d2ae21ac1..4b3fbf122533 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -133,6 +133,7 @@ enum mlx4_event {
 	MLX4_EVENT_TYPE_CMD		   = 0x0a,
 	MLX4_EVENT_TYPE_VEP_UPDATE	   = 0x19,
 	MLX4_EVENT_TYPE_COMM_CHANNEL	   = 0x18,
+	MLX4_EVENT_TYPE_FATAL_WARNING	   = 0x1b,
 	MLX4_EVENT_TYPE_FLR_EVENT	   = 0x1c,
 	MLX4_EVENT_TYPE_NONE		   = 0xff,
 };
@@ -142,6 +143,10 @@ enum {
 	MLX4_PORT_CHANGE_SUBTYPE_ACTIVE	= 4
 };
 
+enum {
+	MLX4_FATAL_WARNING_SUBTYPE_WARMING = 0,
+};
+
 enum {
 	MLX4_PERM_LOCAL_READ	= 1 << 10,
 	MLX4_PERM_LOCAL_WRITE	= 1 << 11,