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 12 static struct dentry *hns_roce_dbgfs_root; 13 14 static 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 21 static 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 29 static 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 40 static 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 62 static 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 74 static 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 */ 86 void 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 96 void 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 */ 102 void hns_roce_init_debugfs(void) 103 { 104 hns_roce_dbgfs_root = debugfs_create_dir("hns_roce", NULL); 105 } 106 107 void hns_roce_cleanup_debugfs(void) 108 { 109 debugfs_remove_recursive(hns_roce_dbgfs_root); 110 hns_roce_dbgfs_root = NULL; 111 } 112