add debugfs node for querying sq info, for example:
cat /sys/kernel/debug/hinic/:15:00.0/SQs/0x0/sq_pi
Signed-off-by: Luo bin
---
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 ..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
+#include
+
+#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(>prod_idx) & wq->mask;
+ case SQ_CI:
+ return atomic_read(>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, >field_id[i],
_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;
+
