qed: Add APIs for configuring grc dump config flags.

The patch adds driver support for configuring the grc dump config flags.

Signed-off-by: Sudarsana Reddy Kalluru <skalluru@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qed/qed_debug.c

@@ -1756,6 +1756,15 @@ static u32 qed_read_unaligned_dword(u8 *buf)
 	return dword;
 }
 
+/* Sets the value of the specified GRC param */
+static void qed_grc_set_param(struct qed_hwfn *p_hwfn,
+			      enum dbg_grc_params grc_param, u32 val)
+{
+	struct dbg_tools_data *dev_data = &p_hwfn->dbg_info;
+
+	dev_data->grc.param_val[grc_param] = val;
+}
+
 /* Returns the value of the specified GRC param */
 static u32 qed_grc_get_param(struct qed_hwfn *p_hwfn,
 			     enum dbg_grc_params grc_param)
@@ -5119,6 +5128,69 @@ bool qed_read_fw_info(struct qed_hwfn *p_hwfn,
 	return false;
 }
 
+enum dbg_status qed_dbg_grc_config(struct qed_hwfn *p_hwfn,
+				   struct qed_ptt *p_ptt,
+				   enum dbg_grc_params grc_param, u32 val)
+{
+	enum dbg_status status;
+	int i;
+
+	DP_VERBOSE(p_hwfn, QED_MSG_DEBUG,
+		   "dbg_grc_config: paramId = %d, val = %d\n", grc_param, val);
+
+	status = qed_dbg_dev_init(p_hwfn, p_ptt);
+	if (status != DBG_STATUS_OK)
+		return status;
+
+	/* Initializes the GRC parameters (if not initialized). Needed in order
+	 * to set the default parameter values for the first time.
+	 */
+	qed_dbg_grc_init_params(p_hwfn);
+
+	if (grc_param >= MAX_DBG_GRC_PARAMS)
+		return DBG_STATUS_INVALID_ARGS;
+	if (val < s_grc_param_defs[grc_param].min ||
+	    val > s_grc_param_defs[grc_param].max)
+		return DBG_STATUS_INVALID_ARGS;
+
+	if (s_grc_param_defs[grc_param].is_preset) {
+		/* Preset param */
+
+		/* Disabling a preset is not allowed. Call
+		 * dbg_grc_set_params_default instead.
+		 */
+		if (!val)
+			return DBG_STATUS_INVALID_ARGS;
+
+		/* Update all params with the preset values */
+		for (i = 0; i < MAX_DBG_GRC_PARAMS; i++) {
+			u32 preset_val;
+
+			/* Skip persistent params */
+			if (s_grc_param_defs[i].is_persistent)
+				continue;
+
+			/* Find preset value */
+			if (grc_param == DBG_GRC_PARAM_EXCLUDE_ALL)
+				preset_val =
+				    s_grc_param_defs[i].exclude_all_preset_val;
+			else if (grc_param == DBG_GRC_PARAM_CRASH)
+				preset_val =
+				    s_grc_param_defs[i].crash_preset_val;
+			else
+				return DBG_STATUS_INVALID_ARGS;
+
+			qed_grc_set_param(p_hwfn,
+					  (enum dbg_grc_params)i, preset_val);
+		}
+	} else {
+		/* Regular param - set its value */
+		qed_grc_set_param(p_hwfn, grc_param, val);
+	}
+
+	return DBG_STATUS_OK;
+}
+
 /* Assign default GRC param values */
 void qed_dbg_grc_set_params_default(struct qed_hwfn *p_hwfn)
 {
@@ -7997,9 +8069,16 @@ static u32 qed_calc_regdump_header(enum debug_print_features feature,
 int qed_dbg_all_data(struct qed_dev *cdev, void *buffer)
 {
 	u8 cur_engine, omit_engine = 0, org_engine;
+	struct qed_hwfn *p_hwfn =
+		&cdev->hwfns[cdev->dbg_params.engine_for_debug];
+	struct dbg_tools_data *dev_data = &p_hwfn->dbg_info;
+	int grc_params[MAX_DBG_GRC_PARAMS], i;
 	u32 offset = 0, feature_size;
 	int rc;
 
+	for (i = 0; i < MAX_DBG_GRC_PARAMS; i++)
+		grc_params[i] = dev_data->grc.param_val[i];
+
 	if (cdev->num_hwfns == 1)
 		omit_engine = 1;
 
@@ -8087,6 +8166,9 @@ int qed_dbg_all_data(struct qed_dev *cdev, void *buffer)
 			       rc);
 		}
 
+		for (i = 0; i < MAX_DBG_GRC_PARAMS; i++)
+			dev_data->grc.param_val[i] = grc_params[i];
+
 		/* GRC dump - must be last because when mcp stuck it will
 		 * clutter idle_chk, reg_fifo, ...
 		 */

drivers/net/ethernet/qlogic/qed/qed_hsi.h

@@ -3024,6 +3024,21 @@ void qed_read_regs(struct qed_hwfn *p_hwfn,
  */
 bool qed_read_fw_info(struct qed_hwfn *p_hwfn,
 		      struct qed_ptt *p_ptt, struct fw_info *fw_info);
+/**
+ * @brief qed_dbg_grc_config - Sets the value of a GRC parameter.
+ *
+ * @param p_hwfn -	HW device data
+ * @param grc_param -	GRC parameter
+ * @param val -		Value to set.
+ *
+ * @return error if one of the following holds:
+ *	- the version wasn't set
+ *	- grc_param is invalid
+ *	- val is outside the allowed boundaries
+ */
+enum dbg_status qed_dbg_grc_config(struct qed_hwfn *p_hwfn,
+				   struct qed_ptt *p_ptt,
+				   enum dbg_grc_params grc_param, u32 val);
 
 /**
  * @brief qed_dbg_grc_set_params_default - Reverts all GRC parameters to their

drivers/net/ethernet/qlogic/qed/qed_main.c

@@ -2583,6 +2583,26 @@ static int qed_read_module_eeprom(struct qed_dev *cdev, char *buf,
 	return rc;
 }
 
+static int qed_set_grc_config(struct qed_dev *cdev, u32 cfg_id, u32 val)
+{
+	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
+	struct qed_ptt *ptt;
+	int rc = 0;
+
+	if (IS_VF(cdev))
+		return 0;
+
+	ptt = qed_ptt_acquire(hwfn);
+	if (!ptt)
+		return -EAGAIN;
+
+	rc = qed_dbg_grc_config(hwfn, ptt, cfg_id, val);
+
+	qed_ptt_release(hwfn, ptt);
+
+	return rc;
+}
+
 static u8 qed_get_affin_hwfn_idx(struct qed_dev *cdev)
 {
 	return QED_AFFIN_HWFN_IDX(cdev);
@@ -2637,6 +2657,7 @@ const struct qed_common_ops qed_common_ops_pass = {
 	.read_module_eeprom = &qed_read_module_eeprom,
 	.get_affin_hwfn_idx = &qed_get_affin_hwfn_idx,
 	.read_nvm_cfg = &qed_nvm_flash_cfg_read,
+	.set_grc_config = &qed_set_grc_config,
 };
 
 void qed_get_protocol_stats(struct qed_dev *cdev,

include/linux/qed/qed_if.h

@@ -1143,6 +1143,15 @@ struct qed_common_ops {
  */
 	int (*read_nvm_cfg)(struct qed_dev *cdev, u8 **buf, u32 cmd,
 			    u32 entity_id);
+
+/**
+ * @brief set_grc_config - Configure value for grc config id.
+ * @param cdev
+ * @param cfg_id - grc config id
+ * @param val - grc config value
+ *
+ */
+	int (*set_grc_config)(struct qed_dev *cdev, u32 cfg_id, u32 val);
 };
 
 #define MASK_FIELD(_name, _value) \