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