[PATCH net-next v2 0/3] hinic: add debugfs support

[PATCH net-next v2 0/3] hinic: add debugfs support

[Luo bin]

add debugfs node for querying sq/rq info and function table

Luo bin (3):
  hinic: add support to query sq info
  hinic: add support to query rq info
  hinic: add support to query function table

 drivers/net/ethernet/huawei/hinic/Makefile    |   3 +-
 .../net/ethernet/huawei/hinic/hinic_debugfs.c | 318 ++++++++++++++++++
 .../net/ethernet/huawei/hinic/hinic_debugfs.h | 114 +++++++
 drivers/net/ethernet/huawei/hinic/hinic_dev.h |  20 ++
 .../net/ethernet/huawei/hinic/hinic_hw_dev.c  |   1 +
 .../net/ethernet/huawei/hinic/hinic_hw_dev.h  |   2 +
 .../net/ethernet/huawei/hinic/hinic_hw_io.c   |   2 +
 .../net/ethernet/huawei/hinic/hinic_hw_io.h   |   1 +
 .../net/ethernet/huawei/hinic/hinic_hw_qp.h   |   6 +
 .../net/ethernet/huawei/hinic/hinic_main.c    |  83 ++++-
 10 files changed, 544 insertions(+), 6 deletions(-)
 create mode 100644 drivers/net/ethernet/huawei/hinic/hinic_debugfs.c
 create mode 100644 drivers/net/ethernet/huawei/hinic/hinic_debugfs.h

-- 
2.17.1

[PATCH net-next v2 1/3] hinic: add support to query sq info

[Luo bin]

add debugfs node for querying sq info, for example:
cat /sys/kernel/debug/hinic/0000:15:00.0/SQs/0x0/sq_pi

Signed-off-by: Luo bin <luobin9@huawei.com>
---
V0~V1:
- remove command interfaces to the read only files
- split addition of each object into a separate patch

 drivers/net/ethernet/huawei/hinic/Makefile    |   3 +-
 .../net/ethernet/huawei/hinic/hinic_debugfs.c | 162 ++++++++++++++++++
 .../net/ethernet/huawei/hinic/hinic_debugfs.h |  27 +++
 drivers/net/ethernet/huawei/hinic/hinic_dev.h |  15 ++
 .../net/ethernet/huawei/hinic/hinic_hw_dev.c  |   1 +
 .../net/ethernet/huawei/hinic/hinic_hw_io.c   |   1 +
 .../net/ethernet/huawei/hinic/hinic_hw_io.h   |   1 +
 .../net/ethernet/huawei/hinic/hinic_hw_qp.h   |   3 +
 .../net/ethernet/huawei/hinic/hinic_main.c    |  45 ++++-
 9 files changed, 254 insertions(+), 4 deletions(-)
 create mode 100644 drivers/net/ethernet/huawei/hinic/hinic_debugfs.c
 create mode 100644 drivers/net/ethernet/huawei/hinic/hinic_debugfs.h

diff --git a/drivers/net/ethernet/huawei/hinic/Makefile b/drivers/net/ethernet/huawei/hinic/Makefile
index 67b59d0ba769..2f89119c9b69 100644
--- a/drivers/net/ethernet/huawei/hinic/Makefile
+++ b/drivers/net/ethernet/huawei/hinic/Makefile
@@ -4,4 +4,5 @@ obj-$(CONFIG_HINIC) += hinic.o
 hinic-y := hinic_main.o hinic_tx.o hinic_rx.o hinic_port.o hinic_hw_dev.o \
 	   hinic_hw_io.o hinic_hw_qp.o hinic_hw_cmdq.o hinic_hw_wq.o \
 	   hinic_hw_mgmt.o hinic_hw_api_cmd.o hinic_hw_eqs.o hinic_hw_if.o \
-	   hinic_common.o hinic_ethtool.o hinic_devlink.o hinic_hw_mbox.o hinic_sriov.o
+	   hinic_common.o hinic_ethtool.o hinic_devlink.o hinic_hw_mbox.o \
+	   hinic_sriov.o hinic_debugfs.o
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c b/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c
new file mode 100644
index 000000000000..2a1050cb400e
--- /dev/null
+++ b/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c
@@ -0,0 +1,162 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Huawei HiNIC PCI Express Linux driver
+ * Copyright(c) 2017 Huawei Technologies Co., Ltd
+ */
+
+#include <linux/debugfs.h>
+#include <linux/device.h>
+
+#include "hinic_debugfs.h"
+
+static struct dentry *hinic_dbgfs_root;
+
+enum sq_dbg_info {
+	GLB_SQ_ID,
+	SQ_PI,
+	SQ_CI,
+	SQ_FI,
+	SQ_MSIX_ENTRY,
+};
+
+static char *sq_fields[] = {"glb_sq_id", "sq_pi", "sq_ci", "sq_fi", "sq_msix_entry"};
+
+static u64 hinic_dbg_get_sq_info(struct hinic_dev *nic_dev, struct hinic_sq *sq, int idx)
+{
+	struct hinic_wq *wq = sq->wq;
+
+	switch (idx) {
+	case GLB_SQ_ID:
+		return nic_dev->hwdev->func_to_io.global_qpn + sq->qid;
+	case SQ_PI:
+		return atomic_read(&wq->prod_idx) & wq->mask;
+	case SQ_CI:
+		return atomic_read(&wq->cons_idx) & wq->mask;
+	case SQ_FI:
+		return be16_to_cpu(*(__be16 *)(sq->hw_ci_addr)) & wq->mask;
+	case SQ_MSIX_ENTRY:
+		return sq->msix_entry;
+	}
+
+	return 0;
+}
+
+static ssize_t hinic_dbg_cmd_read(struct file *filp, char __user *buffer, size_t count,
+				  loff_t *ppos)
+{
+	struct hinic_debug_priv *dbg;
+	char ret_buf[20];
+	int *desc;
+	u64 out;
+	int ret;
+
+	desc = filp->private_data;
+	dbg = container_of(desc, struct hinic_debug_priv, field_id[*desc]);
+
+	switch (dbg->type) {
+	case HINIC_DBG_SQ_INFO:
+		out = hinic_dbg_get_sq_info(dbg->dev, dbg->object, *desc);
+		break;
+
+	default:
+		netif_warn(dbg->dev, drv, dbg->dev->netdev, "Invalid hinic debug cmd: %d\n",
+			   dbg->type);
+		return -EINVAL;
+	}
+
+	ret = snprintf(ret_buf, sizeof(ret_buf), "0x%llx\n", out);
+
+	return simple_read_from_buffer(buffer, count, ppos, ret_buf, ret);
+}
+
+static const struct file_operations hinic_dbg_cmd_fops = {
+	.owner = THIS_MODULE,
+	.open  = simple_open,
+	.read  = hinic_dbg_cmd_read,
+};
+
+static int create_dbg_files(struct hinic_dev *dev, enum hinic_dbg_type type, void *data,
+			    struct dentry *root, struct hinic_debug_priv **dbg, char **field,
+			    int nfile)
+{
+	struct hinic_debug_priv *tmp;
+	int i;
+
+	tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
+	if (!tmp)
+		return -ENOMEM;
+
+	tmp->dev = dev;
+	tmp->object = data;
+	tmp->type = type;
+	tmp->root = root;
+
+	for (i = 0; i < nfile; i++) {
+		tmp->field_id[i] = i;
+		debugfs_create_file(field[i], 0400, root, &tmp->field_id[i], &hinic_dbg_cmd_fops);
+	}
+
+	*dbg = tmp;
+
+	return 0;
+}
+
+static void rem_dbg_files(struct hinic_debug_priv *dbg)
+{
+	debugfs_remove_recursive(dbg->root);
+	kfree(dbg);
+}
+
+int hinic_sq_debug_add(struct hinic_dev *dev, u16 sq_id)
+{
+	struct hinic_sq *sq;
+	struct dentry *root;
+	char sub_dir[16];
+
+	sq = dev->txqs[sq_id].sq;
+
+	sprintf(sub_dir, "0x%x", sq_id);
+
+	root = debugfs_create_dir(sub_dir, dev->sq_dbgfs);
+
+	return create_dbg_files(dev, HINIC_DBG_SQ_INFO, sq, root, &sq->dbg, sq_fields,
+				ARRAY_SIZE(sq_fields));
+}
+
+void hinic_sq_debug_rem(struct hinic_sq *sq)
+{
+	if (sq->dbg)
+		rem_dbg_files(sq->dbg);
+}
+
+void hinic_sq_dbgfs_init(struct hinic_dev *nic_dev)
+{
+	nic_dev->sq_dbgfs = debugfs_create_dir("SQs", nic_dev->dbgfs_root);
+}
+
+void hinic_sq_dbgfs_uninit(struct hinic_dev *nic_dev)
+{
+	debugfs_remove_recursive(nic_dev->sq_dbgfs);
+}
+
+void hinic_dbg_init(struct hinic_dev *nic_dev)
+{
+	nic_dev->dbgfs_root = debugfs_create_dir(pci_name(nic_dev->hwdev->hwif->pdev),
+						 hinic_dbgfs_root);
+}
+
+void hinic_dbg_uninit(struct hinic_dev *nic_dev)
+{
+	debugfs_remove_recursive(nic_dev->dbgfs_root);
+	nic_dev->dbgfs_root = NULL;
+}
+
+void hinic_dbg_register_debugfs(const char *debugfs_dir_name)
+{
+	hinic_dbgfs_root = debugfs_create_dir(debugfs_dir_name, NULL);
+}
+
+void hinic_dbg_unregister_debugfs(void)
+{
+	debugfs_remove_recursive(hinic_dbgfs_root);
+	hinic_dbgfs_root = NULL;
+}
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_debugfs.h b/drivers/net/ethernet/huawei/hinic/hinic_debugfs.h
new file mode 100644
index 000000000000..45fb3b40f487
--- /dev/null
+++ b/drivers/net/ethernet/huawei/hinic/hinic_debugfs.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Huawei HiNIC PCI Express Linux driver
+ * Copyright(c) 2017 Huawei Technologies Co., Ltd
+ */
+
+#ifndef HINIC_DEBUGFS_H
+#define HINIC_DEBUGFS_H
+
+#include "hinic_dev.h"
+
+int hinic_sq_debug_add(struct hinic_dev *dev, u16 sq_id);
+
+void hinic_sq_debug_rem(struct hinic_sq *sq);
+
+void hinic_sq_dbgfs_init(struct hinic_dev *nic_dev);
+
+void hinic_sq_dbgfs_uninit(struct hinic_dev *nic_dev);
+
+void hinic_dbg_init(struct hinic_dev *nic_dev);
+
+void hinic_dbg_uninit(struct hinic_dev *nic_dev);
+
+void hinic_dbg_register_debugfs(const char *debugfs_dir_name);
+
+void hinic_dbg_unregister_debugfs(void);
+
+#endif
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_dev.h b/drivers/net/ethernet/huawei/hinic/hinic_dev.h
index 0a1e20edf7cf..95d9548014ac 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_dev.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_dev.h
@@ -58,6 +58,18 @@ struct hinic_intr_coal_info {
 	u8	resend_timer_cfg;
 };
 
+enum hinic_dbg_type {
+	HINIC_DBG_SQ_INFO,
+};
+
+struct hinic_debug_priv {
+	struct hinic_dev	*dev;
+	void			*object;
+	enum hinic_dbg_type	type;
+	struct dentry		*root;
+	int			field_id[64];
+};
+
 struct hinic_dev {
 	struct net_device               *netdev;
 	struct hinic_hwdev              *hwdev;
@@ -97,6 +109,9 @@ struct hinic_dev {
 	int				lb_test_rx_idx;
 	int				lb_pkt_len;
 	u8				*lb_test_rx_buf;
+
+	struct dentry			*dbgfs_root;
+	struct dentry			*sq_dbgfs;
 	struct devlink			*devlink;
 	bool				cable_unplugged;
 	bool				module_unrecognized;
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c b/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c
index 0c737765d113..239685152f6e 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c
@@ -465,6 +465,7 @@ int hinic_hwdev_ifup(struct hinic_hwdev *hwdev, u16 sq_depth, u16 rq_depth)
 	func_to_io->hwdev = hwdev;
 	func_to_io->sq_depth = sq_depth;
 	func_to_io->rq_depth = rq_depth;
+	func_to_io->global_qpn = base_qpn;
 
 	err = hinic_io_init(func_to_io, hwif, nic_cap->max_qps, num_ceqs,
 			    ceq_msix_entries);
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_io.c b/drivers/net/ethernet/huawei/hinic/hinic_hw_io.c
index 3e3fa742e476..39a38edb89d6 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_hw_io.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_io.c
@@ -305,6 +305,7 @@ static int init_qp(struct hinic_func_to_io *func_to_io,
 
 	func_to_io->sq_db[q_id] = db_base;
 
+	qp->sq.qid = q_id;
 	err = hinic_init_sq(&qp->sq, hwif, &func_to_io->sq_wq[q_id],
 			    sq_msix_entry,
 			    CI_ADDR(func_to_io->ci_addr_base, q_id),
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_io.h b/drivers/net/ethernet/huawei/hinic/hinic_hw_io.h
index ee6d60762d84..52159a90278a 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_hw_io.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_io.h
@@ -59,6 +59,7 @@ struct hinic_nic_cfg {
 struct hinic_func_to_io {
 	struct hinic_hwif       *hwif;
 	struct hinic_hwdev      *hwdev;
+	u16			global_qpn;
 	struct hinic_ceqs       ceqs;
 
 	struct hinic_wqs        wqs;
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_qp.h b/drivers/net/ethernet/huawei/hinic/hinic_hw_qp.h
index ca3e2d060284..936605cec4ab 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_hw_qp.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_qp.h
@@ -81,6 +81,8 @@ struct hinic_sq {
 
 	struct hinic_wq         *wq;
 
+	u16			qid;
+
 	u32                     irq;
 	u16                     msix_entry;
 
@@ -90,6 +92,7 @@ struct hinic_sq {
 	void __iomem            *db_base;
 
 	struct sk_buff          **saved_skb;
+	struct hinic_debug_priv	*dbg;
 };
 
 struct hinic_rq {
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_main.c b/drivers/net/ethernet/huawei/hinic/hinic_main.c
index 501056fd32ee..aad1e5e1bfbe 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_main.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_main.c
@@ -24,6 +24,7 @@
 #include <linux/delay.h>
 #include <linux/err.h>
 
+#include "hinic_debugfs.h"
 #include "hinic_hw_qp.h"
 #include "hinic_hw_dev.h"
 #include "hinic_devlink.h"
@@ -153,6 +154,8 @@ static int create_txqs(struct hinic_dev *nic_dev)
 	if (!nic_dev->txqs)
 		return -ENOMEM;
 
+	hinic_sq_dbgfs_init(nic_dev);
+
 	for (i = 0; i < num_txqs; i++) {
 		struct hinic_sq *sq = hinic_hwdev_get_sq(nic_dev->hwdev, i);
 
@@ -162,13 +165,27 @@ static int create_txqs(struct hinic_dev *nic_dev)
 				  "Failed to init Txq\n");
 			goto err_init_txq;
 		}
+
+		err = hinic_sq_debug_add(nic_dev, i);
+		if (err) {
+			netif_err(nic_dev, drv, netdev,
+				  "Failed to add SQ%d debug\n", i);
+			goto err_add_sq_dbg;
+		}
+
 	}
 
 	return 0;
 
+err_add_sq_dbg:
+	hinic_clean_txq(&nic_dev->txqs[i]);
 err_init_txq:
-	for (j = 0; j < i; j++)
+	for (j = 0; j < i; j++) {
+		hinic_sq_debug_rem(nic_dev->txqs[j].sq);
 		hinic_clean_txq(&nic_dev->txqs[j]);
+	}
+
+	hinic_sq_dbgfs_uninit(nic_dev);
 
 	devm_kfree(&netdev->dev, nic_dev->txqs);
 	return err;
@@ -186,8 +203,12 @@ static void free_txqs(struct hinic_dev *nic_dev)
 	if (!nic_dev->txqs)
 		return;
 
-	for (i = 0; i < num_txqs; i++)
+	for (i = 0; i < num_txqs; i++) {
+		hinic_sq_debug_rem(nic_dev->txqs[i].sq);
 		hinic_clean_txq(&nic_dev->txqs[i]);
+	}
+
+	hinic_sq_dbgfs_uninit(nic_dev);
 
 	devm_kfree(&netdev->dev, nic_dev->txqs);
 	nic_dev->txqs = NULL;
@@ -1260,6 +1281,8 @@ static int nic_dev_init(struct pci_dev *pdev)
 		goto err_init_intr;
 	}
 
+	hinic_dbg_init(nic_dev);
+
 	err = register_netdev(netdev);
 	if (err) {
 		dev_err(&pdev->dev, "Failed to register netdev\n");
@@ -1269,6 +1292,7 @@ static int nic_dev_init(struct pci_dev *pdev)
 	return 0;
 
 err_reg_netdev:
+	hinic_dbg_uninit(nic_dev);
 	hinic_free_intr_coalesce(nic_dev);
 err_init_intr:
 err_set_pfc:
@@ -1391,6 +1415,8 @@ static void hinic_remove(struct pci_dev *pdev)
 
 	unregister_netdev(netdev);
 
+	hinic_dbg_uninit(nic_dev);
+
 	hinic_free_intr_coalesce(nic_dev);
 
 	hinic_port_del_mac(nic_dev, netdev->dev_addr, 0);
@@ -1445,4 +1471,17 @@ static struct pci_driver hinic_driver = {
 	.sriov_configure = hinic_pci_sriov_configure,
 };
 
-module_pci_driver(hinic_driver);
+static int __init hinic_module_init(void)
+{
+	hinic_dbg_register_debugfs(HINIC_DRV_NAME);
+	return pci_register_driver(&hinic_driver);
+}
+
+static void __exit hinic_module_exit(void)
+{
+	pci_unregister_driver(&hinic_driver);
+	hinic_dbg_unregister_debugfs();
+}
+
+module_init(hinic_module_init);
+module_exit(hinic_module_exit);
-- 
2.17.1

[PATCH net-next v2 2/3] hinic: add support to query rq info

[Luo bin]

add debugfs node for querying rq info, for example:
cat /sys/kernel/debug/hinic/0000:15:00.0/RQs/0x0/rq_hw_pi

Signed-off-by: Luo bin <luobin9@huawei.com>
---
V0~V1:
- remove command interfaces to the read only files
- split addition of each object into a separate patch

 .../net/ethernet/huawei/hinic/hinic_debugfs.c | 66 +++++++++++++++++++
 .../net/ethernet/huawei/hinic/hinic_debugfs.h |  8 +++
 drivers/net/ethernet/huawei/hinic/hinic_dev.h |  2 +
 .../net/ethernet/huawei/hinic/hinic_hw_io.c   |  1 +
 .../net/ethernet/huawei/hinic/hinic_hw_qp.h   |  3 +
 .../net/ethernet/huawei/hinic/hinic_main.c    | 23 ++++++-
 6 files changed, 101 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c b/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c
index 2a1050cb400e..d10d0a6d9f13 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c
@@ -40,6 +40,36 @@ static u64 hinic_dbg_get_sq_info(struct hinic_dev *nic_dev, struct hinic_sq *sq,
 	return 0;
 }
 
+enum rq_dbg_info {
+	GLB_RQ_ID,
+	RQ_HW_PI,
+	RQ_SW_CI,
+	RQ_SW_PI,
+	RQ_MSIX_ENTRY,
+};
+
+static char *rq_fields[] = {"glb_rq_id", "rq_hw_pi", "rq_sw_ci", "rq_sw_pi", "rq_msix_entry"};
+
+static u64 hinic_dbg_get_rq_info(struct hinic_dev *nic_dev, struct hinic_rq *rq, int idx)
+{
+	struct hinic_wq *wq = rq->wq;
+
+	switch (idx) {
+	case GLB_RQ_ID:
+		return nic_dev->hwdev->func_to_io.global_qpn + rq->qid;
+	case RQ_HW_PI:
+		return be16_to_cpu(*(__be16 *)(rq->pi_virt_addr)) & wq->mask;
+	case RQ_SW_CI:
+		return atomic_read(&wq->cons_idx) & wq->mask;
+	case RQ_SW_PI:
+		return atomic_read(&wq->prod_idx) & wq->mask;
+	case RQ_MSIX_ENTRY:
+		return rq->msix_entry;
+	}
+
+	return 0;
+}
+
 static ssize_t hinic_dbg_cmd_read(struct file *filp, char __user *buffer, size_t count,
 				  loff_t *ppos)
 {
@@ -57,6 +87,10 @@ static ssize_t hinic_dbg_cmd_read(struct file *filp, char __user *buffer, size_t
 		out = hinic_dbg_get_sq_info(dbg->dev, dbg->object, *desc);
 		break;
 
+	case HINIC_DBG_RQ_INFO:
+		out = hinic_dbg_get_rq_info(dbg->dev, dbg->object, *desc);
+		break;
+
 	default:
 		netif_warn(dbg->dev, drv, dbg->dev->netdev, "Invalid hinic debug cmd: %d\n",
 			   dbg->type);
@@ -128,6 +162,28 @@ void hinic_sq_debug_rem(struct hinic_sq *sq)
 		rem_dbg_files(sq->dbg);
 }
 
+int hinic_rq_debug_add(struct hinic_dev *dev, u16 rq_id)
+{
+	struct hinic_rq *rq;
+	struct dentry *root;
+	char sub_dir[16];
+
+	rq = dev->rxqs[rq_id].rq;
+
+	sprintf(sub_dir, "0x%x", rq_id);
+
+	root = debugfs_create_dir(sub_dir, dev->rq_dbgfs);
+
+	return create_dbg_files(dev, HINIC_DBG_RQ_INFO, rq, root, &rq->dbg, rq_fields,
+				ARRAY_SIZE(rq_fields));
+}
+
+void hinic_rq_debug_rem(struct hinic_rq *rq)
+{
+	if (rq->dbg)
+		rem_dbg_files(rq->dbg);
+}
+
 void hinic_sq_dbgfs_init(struct hinic_dev *nic_dev)
 {
 	nic_dev->sq_dbgfs = debugfs_create_dir("SQs", nic_dev->dbgfs_root);
@@ -138,6 +194,16 @@ void hinic_sq_dbgfs_uninit(struct hinic_dev *nic_dev)
 	debugfs_remove_recursive(nic_dev->sq_dbgfs);
 }
 
+void hinic_rq_dbgfs_init(struct hinic_dev *nic_dev)
+{
+	nic_dev->rq_dbgfs = debugfs_create_dir("RQs", nic_dev->dbgfs_root);
+}
+
+void hinic_rq_dbgfs_uninit(struct hinic_dev *nic_dev)
+{
+	debugfs_remove_recursive(nic_dev->rq_dbgfs);
+}
+
 void hinic_dbg_init(struct hinic_dev *nic_dev)
 {
 	nic_dev->dbgfs_root = debugfs_create_dir(pci_name(nic_dev->hwdev->hwif->pdev),
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_debugfs.h b/drivers/net/ethernet/huawei/hinic/hinic_debugfs.h
index 45fb3b40f487..186ca4a26919 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_debugfs.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_debugfs.h
@@ -12,10 +12,18 @@ int hinic_sq_debug_add(struct hinic_dev *dev, u16 sq_id);
 
 void hinic_sq_debug_rem(struct hinic_sq *sq);
 
+int hinic_rq_debug_add(struct hinic_dev *dev, u16 rq_id);
+
+void hinic_rq_debug_rem(struct hinic_rq *rq);
+
 void hinic_sq_dbgfs_init(struct hinic_dev *nic_dev);
 
 void hinic_sq_dbgfs_uninit(struct hinic_dev *nic_dev);
 
+void hinic_rq_dbgfs_init(struct hinic_dev *nic_dev);
+
+void hinic_rq_dbgfs_uninit(struct hinic_dev *nic_dev);
+
 void hinic_dbg_init(struct hinic_dev *nic_dev);
 
 void hinic_dbg_uninit(struct hinic_dev *nic_dev);
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_dev.h b/drivers/net/ethernet/huawei/hinic/hinic_dev.h
index 95d9548014ac..0876a699d205 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_dev.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_dev.h
@@ -60,6 +60,7 @@ struct hinic_intr_coal_info {
 
 enum hinic_dbg_type {
 	HINIC_DBG_SQ_INFO,
+	HINIC_DBG_RQ_INFO,
 };
 
 struct hinic_debug_priv {
@@ -112,6 +113,7 @@ struct hinic_dev {
 
 	struct dentry			*dbgfs_root;
 	struct dentry			*sq_dbgfs;
+	struct dentry			*rq_dbgfs;
 	struct devlink			*devlink;
 	bool				cable_unplugged;
 	bool				module_unrecognized;
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_io.c b/drivers/net/ethernet/huawei/hinic/hinic_hw_io.c
index 39a38edb89d6..6772d8978722 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_hw_io.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_io.c
@@ -315,6 +315,7 @@ static int init_qp(struct hinic_func_to_io *func_to_io,
 		goto err_sq_init;
 	}
 
+	qp->rq.qid = q_id;
 	err = hinic_init_rq(&qp->rq, hwif, &func_to_io->rq_wq[q_id],
 			    rq_msix_entry);
 	if (err) {
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_qp.h b/drivers/net/ethernet/huawei/hinic/hinic_hw_qp.h
index 936605cec4ab..0dfa51ad5855 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_hw_qp.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_qp.h
@@ -100,6 +100,8 @@ struct hinic_rq {
 
 	struct hinic_wq         *wq;
 
+	u16			qid;
+
 	struct cpumask		affinity_mask;
 	u32                     irq;
 	u16                     msix_entry;
@@ -113,6 +115,7 @@ struct hinic_rq {
 
 	u16                     *pi_virt_addr;
 	dma_addr_t              pi_dma_addr;
+	struct hinic_debug_priv	*dbg;
 };
 
 struct hinic_qp {
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_main.c b/drivers/net/ethernet/huawei/hinic/hinic_main.c
index aad1e5e1bfbe..27ae780d581a 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_main.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_main.c
@@ -234,6 +234,8 @@ static int create_rxqs(struct hinic_dev *nic_dev)
 	if (!nic_dev->rxqs)
 		return -ENOMEM;
 
+	hinic_rq_dbgfs_init(nic_dev);
+
 	for (i = 0; i < num_rxqs; i++) {
 		struct hinic_rq *rq = hinic_hwdev_get_rq(nic_dev->hwdev, i);
 
@@ -243,13 +245,26 @@ static int create_rxqs(struct hinic_dev *nic_dev)
 				  "Failed to init rxq\n");
 			goto err_init_rxq;
 		}
+
+		err = hinic_rq_debug_add(nic_dev, i);
+		if (err) {
+			netif_err(nic_dev, drv, netdev,
+				  "Failed to add RQ%d debug\n", i);
+			goto err_add_rq_dbg;
+		}
 	}
 
 	return 0;
 
+err_add_rq_dbg:
+	hinic_clean_rxq(&nic_dev->rxqs[i]);
 err_init_rxq:
-	for (j = 0; j < i; j++)
+	for (j = 0; j < i; j++) {
+		hinic_rq_debug_rem(nic_dev->rxqs[j].rq);
 		hinic_clean_rxq(&nic_dev->rxqs[j]);
+	}
+
+	hinic_rq_dbgfs_uninit(nic_dev);
 
 	devm_kfree(&netdev->dev, nic_dev->rxqs);
 	return err;
@@ -267,8 +282,12 @@ static void free_rxqs(struct hinic_dev *nic_dev)
 	if (!nic_dev->rxqs)
 		return;
 
-	for (i = 0; i < num_rxqs; i++)
+	for (i = 0; i < num_rxqs; i++) {
+		hinic_rq_debug_rem(nic_dev->rxqs[i].rq);
 		hinic_clean_rxq(&nic_dev->rxqs[i]);
+	}
+
+	hinic_rq_dbgfs_uninit(nic_dev);
 
 	devm_kfree(&netdev->dev, nic_dev->rxqs);
 	nic_dev->rxqs = NULL;
-- 
2.17.1

[PATCH net-next v2 3/3] hinic: add support to query function table

[Luo bin]

add debugfs node for querying function table, for example:
cat /sys/kernel/debug/hinic/0000:15:00.0/func_table/valid

Signed-off-by: Luo bin <luobin9@huawei.com>
---
V0~V1:
- remove command interfaces to the read only files
- split addition of each object into a separate patch

V1~V2:
- remove vlan_id and vlan_mode from the func_table_fields

 .../net/ethernet/huawei/hinic/hinic_debugfs.c | 92 ++++++++++++++++++-
 .../net/ethernet/huawei/hinic/hinic_debugfs.h | 79 ++++++++++++++++
 drivers/net/ethernet/huawei/hinic/hinic_dev.h |  3 +
 .../net/ethernet/huawei/hinic/hinic_hw_dev.h  |  2 +
 .../net/ethernet/huawei/hinic/hinic_main.c    | 15 +++
 5 files changed, 190 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c b/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c
index d10d0a6d9f13..19eb839177ec 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_debugfs.c
@@ -70,6 +70,63 @@ static u64 hinic_dbg_get_rq_info(struct hinic_dev *nic_dev, struct hinic_rq *rq,
 	return 0;
 }
 
+enum func_tbl_info {
+	VALID,
+	RX_MODE,
+	MTU,
+	RQ_DEPTH,
+	QUEUE_NUM,
+};
+
+static char *func_table_fields[] = {"valid", "rx_mode", "mtu", "rq_depth", "cfg_q_num"};
+
+static int hinic_dbg_get_func_table(struct hinic_dev *nic_dev, int idx)
+{
+	struct tag_sml_funcfg_tbl *funcfg_table_elem;
+	struct hinic_cmd_lt_rd *read_data;
+	u16 out_size = sizeof(*read_data);
+	int err;
+
+	read_data = kzalloc(sizeof(*read_data), GFP_KERNEL);
+	if (!read_data)
+		return ~0;
+
+	read_data->node = TBL_ID_FUNC_CFG_SM_NODE;
+	read_data->inst = TBL_ID_FUNC_CFG_SM_INST;
+	read_data->entry_size = HINIC_FUNCTION_CONFIGURE_TABLE_SIZE;
+	read_data->lt_index = HINIC_HWIF_FUNC_IDX(nic_dev->hwdev->hwif);
+	read_data->len = HINIC_FUNCTION_CONFIGURE_TABLE_SIZE;
+
+	err = hinic_port_msg_cmd(nic_dev->hwdev, HINIC_PORT_CMD_RD_LINE_TBL, read_data,
+				 sizeof(*read_data), read_data, &out_size);
+	if (err || out_size != sizeof(*read_data) || read_data->status) {
+		netif_err(nic_dev, drv, nic_dev->netdev,
+			  "Failed to get func table, err: %d, status: 0x%x, out size: 0x%x\n",
+			  err, read_data->status, out_size);
+		kfree(read_data);
+		return ~0;
+	}
+
+	funcfg_table_elem = (struct tag_sml_funcfg_tbl *)read_data->data;
+
+	switch (idx) {
+	case VALID:
+		return funcfg_table_elem->dw0.bs.valid;
+	case RX_MODE:
+		return funcfg_table_elem->dw0.bs.nic_rx_mode;
+	case MTU:
+		return funcfg_table_elem->dw1.bs.mtu;
+	case RQ_DEPTH:
+		return funcfg_table_elem->dw13.bs.cfg_rq_depth;
+	case QUEUE_NUM:
+		return funcfg_table_elem->dw13.bs.cfg_q_num;
+	}
+
+	kfree(read_data);
+
+	return ~0;
+}
+
 static ssize_t hinic_dbg_cmd_read(struct file *filp, char __user *buffer, size_t count,
 				  loff_t *ppos)
 {
@@ -91,6 +148,10 @@ static ssize_t hinic_dbg_cmd_read(struct file *filp, char __user *buffer, size_t
 		out = hinic_dbg_get_rq_info(dbg->dev, dbg->object, *desc);
 		break;
 
+	case HINIC_DBG_FUNC_TABLE:
+		out = hinic_dbg_get_func_table(dbg->dev, *desc);
+		break;
+
 	default:
 		netif_warn(dbg->dev, drv, dbg->dev->netdev, "Invalid hinic debug cmd: %d\n",
 			   dbg->type);
@@ -136,7 +197,9 @@ static int create_dbg_files(struct hinic_dev *dev, enum hinic_dbg_type type, voi
 
 static void rem_dbg_files(struct hinic_debug_priv *dbg)
 {
-	debugfs_remove_recursive(dbg->root);
+	if (dbg->type != HINIC_DBG_FUNC_TABLE)
+		debugfs_remove_recursive(dbg->root);
+
 	kfree(dbg);
 }
 
@@ -184,6 +247,21 @@ void hinic_rq_debug_rem(struct hinic_rq *rq)
 		rem_dbg_files(rq->dbg);
 }
 
+int hinic_func_table_debug_add(struct hinic_dev *dev)
+{
+	if (HINIC_IS_VF(dev->hwdev->hwif))
+		return 0;
+
+	return create_dbg_files(dev, HINIC_DBG_FUNC_TABLE, dev, dev->func_tbl_dbgfs, &dev->dbg,
+				func_table_fields, ARRAY_SIZE(func_table_fields));
+}
+
+void hinic_func_table_debug_rem(struct hinic_dev *dev)
+{
+	if (!HINIC_IS_VF(dev->hwdev->hwif) && dev->dbg)
+		rem_dbg_files(dev->dbg);
+}
+
 void hinic_sq_dbgfs_init(struct hinic_dev *nic_dev)
 {
 	nic_dev->sq_dbgfs = debugfs_create_dir("SQs", nic_dev->dbgfs_root);
@@ -204,6 +282,18 @@ void hinic_rq_dbgfs_uninit(struct hinic_dev *nic_dev)
 	debugfs_remove_recursive(nic_dev->rq_dbgfs);
 }
 
+void hinic_func_tbl_dbgfs_init(struct hinic_dev *nic_dev)
+{
+	if (!HINIC_IS_VF(nic_dev->hwdev->hwif))
+		nic_dev->func_tbl_dbgfs = debugfs_create_dir("func_table", nic_dev->dbgfs_root);
+}
+
+void hinic_func_tbl_dbgfs_uninit(struct hinic_dev *nic_dev)
+{
+	if (!HINIC_IS_VF(nic_dev->hwdev->hwif))
+		debugfs_remove_recursive(nic_dev->func_tbl_dbgfs);
+}
+
 void hinic_dbg_init(struct hinic_dev *nic_dev)
 {
 	nic_dev->dbgfs_root = debugfs_create_dir(pci_name(nic_dev->hwdev->hwif->pdev),
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_debugfs.h b/drivers/net/ethernet/huawei/hinic/hinic_debugfs.h
index 186ca4a26919..e9e00cfa1329 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_debugfs.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_debugfs.h
@@ -8,6 +8,77 @@
 
 #include "hinic_dev.h"
 
+#define    TBL_ID_FUNC_CFG_SM_NODE                      11
+#define    TBL_ID_FUNC_CFG_SM_INST                      1
+
+#define HINIC_FUNCTION_CONFIGURE_TABLE_SIZE             64
+#define HINIC_FUNCTION_CONFIGURE_TABLE			1
+
+struct hinic_cmd_lt_rd {
+	u8	status;
+	u8	version;
+	u8	rsvd0[6];
+
+	unsigned char node;
+	unsigned char inst;
+	unsigned char entry_size;
+	unsigned char rsvd;
+	unsigned int lt_index;
+	unsigned int offset;
+	unsigned int len;
+	unsigned char data[100];
+};
+
+struct tag_sml_funcfg_tbl {
+	union {
+		struct {
+			u32 rsvd0            :8;
+			u32 nic_rx_mode      :5;
+			u32 rsvd1            :18;
+			u32 valid            :1;
+		} bs;
+
+		u32 value;
+	} dw0;
+
+	union {
+		struct {
+			u32 vlan_id             :12;
+			u32 vlan_mode           :3;
+			u32 fast_recycled_mode  :1;
+			u32 mtu                 :16;
+		} bs;
+
+		u32 value;
+	} dw1;
+
+	u32 dw2;
+	u32 dw3;
+	u32 dw4;
+	u32 dw5;
+	u32 dw6;
+	u32 dw7;
+	u32 dw8;
+	u32 dw9;
+	u32 dw10;
+	u32 dw11;
+	u32 dw12;
+
+	union {
+		struct {
+			u32 rsvd2               :15;
+			u32 cfg_q_num           :9;
+			u32 cfg_rq_depth        :6;
+			u32 vhd_type            :2;
+		} bs;
+
+		u32 value;
+	} dw13;
+
+	u32 dw14;
+	u32 dw15;
+};
+
 int hinic_sq_debug_add(struct hinic_dev *dev, u16 sq_id);
 
 void hinic_sq_debug_rem(struct hinic_sq *sq);
@@ -16,6 +87,10 @@ int hinic_rq_debug_add(struct hinic_dev *dev, u16 rq_id);
 
 void hinic_rq_debug_rem(struct hinic_rq *rq);
 
+int hinic_func_table_debug_add(struct hinic_dev *dev);
+
+void hinic_func_table_debug_rem(struct hinic_dev *dev);
+
 void hinic_sq_dbgfs_init(struct hinic_dev *nic_dev);
 
 void hinic_sq_dbgfs_uninit(struct hinic_dev *nic_dev);
@@ -24,6 +99,10 @@ void hinic_rq_dbgfs_init(struct hinic_dev *nic_dev);
 
 void hinic_rq_dbgfs_uninit(struct hinic_dev *nic_dev);
 
+void hinic_func_tbl_dbgfs_init(struct hinic_dev *nic_dev);
+
+void hinic_func_tbl_dbgfs_uninit(struct hinic_dev *nic_dev);
+
 void hinic_dbg_init(struct hinic_dev *nic_dev);
 
 void hinic_dbg_uninit(struct hinic_dev *nic_dev);
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_dev.h b/drivers/net/ethernet/huawei/hinic/hinic_dev.h
index 0876a699d205..fb3e89141a0d 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_dev.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_dev.h
@@ -61,6 +61,7 @@ struct hinic_intr_coal_info {
 enum hinic_dbg_type {
 	HINIC_DBG_SQ_INFO,
 	HINIC_DBG_RQ_INFO,
+	HINIC_DBG_FUNC_TABLE,
 };
 
 struct hinic_debug_priv {
@@ -114,6 +115,8 @@ struct hinic_dev {
 	struct dentry			*dbgfs_root;
 	struct dentry			*sq_dbgfs;
 	struct dentry			*rq_dbgfs;
+	struct dentry			*func_tbl_dbgfs;
+	struct hinic_debug_priv		*dbg;
 	struct devlink			*devlink;
 	bool				cable_unplugged;
 	bool				module_unrecognized;
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.h b/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.h
index 701eb81e09a7..416492e48274 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.h
@@ -96,6 +96,8 @@ enum hinic_port_cmd {
 
 	HINIC_PORT_CMD_RSS_TEMP_MGR	= 49,
 
+	HINIC_PORT_CMD_RD_LINE_TBL	= 57,
+
 	HINIC_PORT_CMD_RSS_CFG		= 66,
 
 	HINIC_PORT_CMD_FWCTXT_INIT      = 69,
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_main.c b/drivers/net/ethernet/huawei/hinic/hinic_main.c
index 27ae780d581a..797c55a1d9c6 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_main.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_main.c
@@ -1302,6 +1302,14 @@ static int nic_dev_init(struct pci_dev *pdev)
 
 	hinic_dbg_init(nic_dev);
 
+	hinic_func_tbl_dbgfs_init(nic_dev);
+
+	err = hinic_func_table_debug_add(nic_dev);
+	if (err) {
+		dev_err(&pdev->dev, "Failed to add func_table debug\n");
+		goto err_add_func_table_dbg;
+	}
+
 	err = register_netdev(netdev);
 	if (err) {
 		dev_err(&pdev->dev, "Failed to register netdev\n");
@@ -1311,6 +1319,9 @@ static int nic_dev_init(struct pci_dev *pdev)
 	return 0;
 
 err_reg_netdev:
+	hinic_func_table_debug_rem(nic_dev);
+err_add_func_table_dbg:
+	hinic_func_tbl_dbgfs_uninit(nic_dev);
 	hinic_dbg_uninit(nic_dev);
 	hinic_free_intr_coalesce(nic_dev);
 err_init_intr:
@@ -1434,6 +1445,10 @@ static void hinic_remove(struct pci_dev *pdev)
 
 	unregister_netdev(netdev);
 
+	hinic_func_table_debug_rem(nic_dev);
+
+	hinic_func_tbl_dbgfs_uninit(nic_dev);
+
 	hinic_dbg_uninit(nic_dev);
 
 	hinic_free_intr_coalesce(nic_dev);
-- 
2.17.1

Re: [PATCH net-next v2 0/3] hinic: add debugfs support

[David Miller]

From: Luo bin <luobin9@huawei.com>
Date: Fri, 28 Aug 2020 11:37:45 +0800

> add debugfs node for querying sq/rq info and function table

Series applied, thanks.