qed: Add support for debug data collection

This patch adds the support for dumping and formatting the HW/FW debug data.

Signed-off-by: Tomer Tayar <Tomer.Tayar@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qed/Makefile

@@ -2,5 +2,5 @@ obj-$(CONFIG_QED) := qed.o
 
 qed-y := qed_cxt.o qed_dev.o qed_hw.o qed_init_fw_funcs.o qed_init_ops.o \
 	 qed_int.o qed_main.o qed_mcp.o qed_sp_commands.o qed_spq.o qed_l2.o \
-	 qed_selftest.o qed_dcbx.o
+	 qed_selftest.o qed_dcbx.o qed_debug.o
 qed-$(CONFIG_QED_SRIOV) += qed_sriov.o qed_vf.o

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

@@ -23,6 +23,7 @@
 #include <linux/zlib.h>
 #include <linux/hashtable.h>
 #include <linux/qed/qed_if.h>
+#include "qed_debug.h"
 #include "qed_hsi.h"
 
 extern const struct qed_common_ops qed_common_ops_pass;
@@ -395,6 +396,8 @@ struct qed_hwfn {
 	/* Buffer for unzipping firmware data */
 	void				*unzip_buf;
 
+	struct dbg_tools_data		dbg_info;
+
 	struct qed_simd_fp_handler	simd_proto_handler[64];
 
 #ifdef CONFIG_QED_SRIOV
@@ -430,6 +433,19 @@ struct qed_int_params {
 	u8			fp_msix_cnt;
 };
 
+struct qed_dbg_feature {
+	struct dentry *dentry;
+	u8 *dump_buf;
+	u32 buf_size;
+	u32 dumped_dwords;
+};
+
+struct qed_dbg_params {
+	struct qed_dbg_feature features[DBG_FEATURE_NUM];
+	u8 engine_for_debug;
+	bool print_data;
+};
+
 struct qed_dev {
 	u32	dp_module;
 	u8	dp_level;
@@ -444,6 +460,8 @@ struct qed_dev {
 				 CHIP_REV_IS_A0(dev))
 #define QED_IS_BB_B0(dev)       (QED_IS_BB(dev) && \
 				 CHIP_REV_IS_B0(dev))
+#define QED_IS_AH(dev)  ((dev)->type == QED_DEV_TYPE_AH)
+#define QED_IS_K2(dev)  QED_IS_AH(dev)
 
 #define QED_GET_TYPE(dev)       (QED_IS_BB_A0(dev) ? CHIP_BB_A0 : \
 				 QED_IS_BB_B0(dev) ? CHIP_BB_B0 : CHIP_K2)
@@ -544,6 +562,8 @@ struct qed_dev {
 	} protocol_ops;
 	void				*ops_cookie;
 
+	struct qed_dbg_params		dbg_params;
+
 	const struct firmware		*firmware;
 };
 

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

@@ -0,0 +1,54 @@
+/* QLogic qed NIC Driver
+ * Copyright (c) 2015 QLogic Corporation
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+
+#ifndef _QED_DEBUGFS_H
+#define _QED_DEBUGFS_H
+
+enum qed_dbg_features {
+	DBG_FEATURE_GRC,
+	DBG_FEATURE_IDLE_CHK,
+	DBG_FEATURE_MCP_TRACE,
+	DBG_FEATURE_REG_FIFO,
+	DBG_FEATURE_IGU_FIFO,
+	DBG_FEATURE_PROTECTION_OVERRIDE,
+	DBG_FEATURE_FW_ASSERTS,
+	DBG_FEATURE_NUM
+};
+
+int qed_dbg_grc(struct qed_dev *cdev, void *buffer, u32 *num_dumped_bytes);
+int qed_dbg_grc_size(struct qed_dev *cdev);
+int qed_dbg_idle_chk(struct qed_dev *cdev, void *buffer,
+		     u32 *num_dumped_bytes);
+int qed_dbg_idle_chk_size(struct qed_dev *cdev);
+int qed_dbg_reg_fifo(struct qed_dev *cdev, void *buffer,
+		     u32 *num_dumped_bytes);
+int qed_dbg_reg_fifo_size(struct qed_dev *cdev);
+int qed_dbg_igu_fifo(struct qed_dev *cdev, void *buffer,
+		     u32 *num_dumped_bytes);
+int qed_dbg_igu_fifo_size(struct qed_dev *cdev);
+int qed_dbg_protection_override(struct qed_dev *cdev, void *buffer,
+				u32 *num_dumped_bytes);
+int qed_dbg_protection_override_size(struct qed_dev *cdev);
+int qed_dbg_fw_asserts(struct qed_dev *cdev, void *buffer,
+		       u32 *num_dumped_bytes);
+int qed_dbg_fw_asserts_size(struct qed_dev *cdev);
+int qed_dbg_mcp_trace(struct qed_dev *cdev, void *buffer,
+		      u32 *num_dumped_bytes);
+int qed_dbg_mcp_trace_size(struct qed_dev *cdev);
+int qed_dbg_all_data(struct qed_dev *cdev, void *buffer);
+int qed_dbg_all_data_size(struct qed_dev *cdev);
+u8 qed_get_debug_engine(struct qed_dev *cdev);
+void qed_set_debug_engine(struct qed_dev *cdev, int engine_number);
+int qed_dbg_feature(struct qed_dev *cdev, void *buffer,
+		    enum qed_dbg_features feature, u32 *num_dumped_bytes);
+int qed_dbg_feature_size(struct qed_dev *cdev, enum qed_dbg_features feature);
+
+void qed_dbg_pf_init(struct qed_dev *cdev);
+void qed_dbg_pf_exit(struct qed_dev *cdev);
+
+#endif

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

@@ -588,6 +588,8 @@ static int qed_nic_stop(struct qed_dev *cdev)
 		}
 	}
 
+	qed_dbg_pf_exit(cdev);
+
 	return rc;
 }
 
@@ -846,6 +848,8 @@ static int qed_slowpath_start(struct qed_dev *cdev,
 
 		/* First Dword used to diffrentiate between various sources */
 		data = cdev->firmware->data + sizeof(u32);
+
+		qed_dbg_pf_init(cdev);
 	}
 
 	memset(&tunn_info, 0, sizeof(tunn_info));

include/linux/qed/common_hsi.h

@@ -143,6 +143,9 @@
 #define GTT_BYTE_SIZE_BITS	(GTT_DWORD_SIZE_BITS + 2)
 #define GTT_DWORD_SIZE		BIT(GTT_DWORD_SIZE_BITS)
 
+/* Tools Version */
+#define TOOLS_VERSION 10
+
 /*****************/
 /* CDU CONSTANTS */
 /*****************/