hns_roce_debugfs.c

  1// SPDX-License-Identifier: GPL-2.0+
  2/*
  3 * Copyright (c) 2023 Hisilicon Limited.
  4 */
  5
  6#include <linux/debugfs.h>
  7#include <linux/device.h>
  8#include <linux/pci.h>
  9
 10#include "hns_roce_device.h"
 11
 12static struct dentry *hns_roce_dbgfs_root;
 13
 14static int hns_debugfs_seqfile_open(struct inode *inode, struct file *f)
 15{
 16	struct hns_debugfs_seqfile *seqfile = inode->i_private;
 17
 18	return single_open(f, seqfile->read, seqfile->data);
 19}
 20
 21static const struct file_operations hns_debugfs_seqfile_fops = {
 22	.owner = THIS_MODULE,
 23	.open = hns_debugfs_seqfile_open,
 24	.release = single_release,
 25	.read = seq_read,
 26	.llseek = seq_lseek
 27};
 28
 29static void init_debugfs_seqfile(struct hns_debugfs_seqfile *seq,
 30				 const char *name, struct dentry *parent,
 31				 int (*read_fn)(struct seq_file *, void *),
 32				 void *data)
 33{
 34	debugfs_create_file(name, 0400, parent, seq, &hns_debugfs_seqfile_fops);
 35
 36	seq->read = read_fn;
 37	seq->data = data;
 38}
 39
 40static const char * const sw_stat_info[] = {
 41	[HNS_ROCE_DFX_AEQE_CNT] = "aeqe",
 42	[HNS_ROCE_DFX_CEQE_CNT] = "ceqe",
 43	[HNS_ROCE_DFX_CMDS_CNT] = "cmds",
 44	[HNS_ROCE_DFX_CMDS_ERR_CNT] = "cmds_err",
 45	[HNS_ROCE_DFX_MBX_POSTED_CNT] = "posted_mbx",
 46	[HNS_ROCE_DFX_MBX_POLLED_CNT] = "polled_mbx",
 47	[HNS_ROCE_DFX_MBX_EVENT_CNT] = "mbx_event",
 48	[HNS_ROCE_DFX_QP_CREATE_ERR_CNT] = "qp_create_err",
 49	[HNS_ROCE_DFX_QP_MODIFY_ERR_CNT] = "qp_modify_err",
 50	[HNS_ROCE_DFX_CQ_CREATE_ERR_CNT] = "cq_create_err",
 51	[HNS_ROCE_DFX_CQ_MODIFY_ERR_CNT] = "cq_modify_err",
 52	[HNS_ROCE_DFX_SRQ_CREATE_ERR_CNT] = "srq_create_err",
 53	[HNS_ROCE_DFX_SRQ_MODIFY_ERR_CNT] = "srq_modify_err",
 54	[HNS_ROCE_DFX_XRCD_ALLOC_ERR_CNT] = "xrcd_alloc_err",
 55	[HNS_ROCE_DFX_MR_REG_ERR_CNT] = "mr_reg_err",
 56	[HNS_ROCE_DFX_MR_REREG_ERR_CNT] = "mr_rereg_err",
 57	[HNS_ROCE_DFX_AH_CREATE_ERR_CNT] = "ah_create_err",
 58	[HNS_ROCE_DFX_MMAP_ERR_CNT] = "mmap_err",
 59	[HNS_ROCE_DFX_UCTX_ALLOC_ERR_CNT] = "uctx_alloc_err",
 60};
 61
 62static int sw_stat_debugfs_show(struct seq_file *file, void *offset)
 63{
 64	struct hns_roce_dev *hr_dev = file->private;
 65	int i;
 66
 67	for (i = 0; i < HNS_ROCE_DFX_CNT_TOTAL; i++)
 68		seq_printf(file, "%-20s --- %lld\n", sw_stat_info[i],
 69			   atomic64_read(&hr_dev->dfx_cnt[i]));
 70
 71	return 0;
 72}
 73
 74static void create_sw_stat_debugfs(struct hns_roce_dev *hr_dev,
 75				   struct dentry *parent)
 76{
 77	struct hns_sw_stat_debugfs *dbgfs = &hr_dev->dbgfs.sw_stat_root;
 78
 79	dbgfs->root = debugfs_create_dir("sw_stat", parent);
 80
 81	init_debugfs_seqfile(&dbgfs->sw_stat, "sw_stat", dbgfs->root,
 82			     sw_stat_debugfs_show, hr_dev);
 83}
 84
 85/* debugfs for device */
 86void hns_roce_register_debugfs(struct hns_roce_dev *hr_dev)
 87{
 88	struct hns_roce_dev_debugfs *dbgfs = &hr_dev->dbgfs;
 89
 90	dbgfs->root = debugfs_create_dir(pci_name(hr_dev->pci_dev),
 91					 hns_roce_dbgfs_root);
 92
 93	create_sw_stat_debugfs(hr_dev, dbgfs->root);
 94}
 95
 96void hns_roce_unregister_debugfs(struct hns_roce_dev *hr_dev)
 97{
 98	debugfs_remove_recursive(hr_dev->dbgfs.root);
 99}
100
101/* debugfs for hns module */
102void hns_roce_init_debugfs(void)
103{
104	hns_roce_dbgfs_root = debugfs_create_dir("hns_roce", NULL);
105}
106
107void hns_roce_cleanup_debugfs(void)
108{
109	debugfs_remove_recursive(hns_roce_dbgfs_root);
110	hns_roce_dbgfs_root = NULL;
111}