1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * QLogic iSCSI Offload Driver 4 * Copyright (c) 2016 Cavium Inc. 5 */ 6 7 #include "qedi.h" 8 #include "qedi_dbg.h" 9 10 #include <linux/uaccess.h> 11 #include <linux/debugfs.h> 12 #include <linux/module.h> 13 14 int qedi_do_not_recover; 15 static struct dentry *qedi_dbg_root; 16 17 void 18 qedi_dbg_host_init(struct qedi_dbg_ctx *qedi, 19 const struct qedi_debugfs_ops *dops, 20 const struct file_operations *fops) 21 { 22 char host_dirname[32]; 23 24 sprintf(host_dirname, "host%u", qedi->host_no); 25 qedi->bdf_dentry = debugfs_create_dir(host_dirname, qedi_dbg_root); 26 27 while (dops) { 28 if (!(dops->name)) 29 break; 30 31 debugfs_create_file(dops->name, 0600, qedi->bdf_dentry, qedi, 32 fops); 33 dops++; 34 fops++; 35 } 36 } 37 38 void 39 qedi_dbg_host_exit(struct qedi_dbg_ctx *qedi) 40 { 41 debugfs_remove_recursive(qedi->bdf_dentry); 42 qedi->bdf_dentry = NULL; 43 } 44 45 void 46 qedi_dbg_init(char *drv_name) 47 { 48 qedi_dbg_root = debugfs_create_dir(drv_name, NULL); 49 } 50 51 void 52 qedi_dbg_exit(void) 53 { 54 debugfs_remove_recursive(qedi_dbg_root); 55 qedi_dbg_root = NULL; 56 } 57 58 static ssize_t 59 qedi_dbg_do_not_recover_enable(struct qedi_dbg_ctx *qedi_dbg) 60 { 61 if (!qedi_do_not_recover) 62 qedi_do_not_recover = 1; 63 64 QEDI_INFO(qedi_dbg, QEDI_LOG_DEBUGFS, "do_not_recover=%d\n", 65 qedi_do_not_recover); 66 return 0; 67 } 68 69 static ssize_t 70 qedi_dbg_do_not_recover_disable(struct qedi_dbg_ctx *qedi_dbg) 71 { 72 if (qedi_do_not_recover) 73 qedi_do_not_recover = 0; 74 75 QEDI_INFO(qedi_dbg, QEDI_LOG_DEBUGFS, "do_not_recover=%d\n", 76 qedi_do_not_recover); 77 return 0; 78 } 79 80 static struct qedi_list_of_funcs qedi_dbg_do_not_recover_ops[] = { 81 { "enable", qedi_dbg_do_not_recover_enable }, 82 { "disable", qedi_dbg_do_not_recover_disable }, 83 { NULL, NULL } 84 }; 85 86 const struct qedi_debugfs_ops qedi_debugfs_ops[] = { 87 { "gbl_ctx", NULL }, 88 { "do_not_recover", qedi_dbg_do_not_recover_ops}, 89 { "io_trace", NULL }, 90 { NULL, NULL } 91 }; 92 93 static ssize_t 94 qedi_dbg_do_not_recover_cmd_write(struct file *filp, const char __user *buffer, 95 size_t count, loff_t *ppos) 96 { 97 size_t cnt = 0; 98 struct qedi_dbg_ctx *qedi_dbg = 99 (struct qedi_dbg_ctx *)filp->private_data; 100 struct qedi_list_of_funcs *lof = qedi_dbg_do_not_recover_ops; 101 102 if (*ppos) 103 return 0; 104 105 while (lof) { 106 if (!(lof->oper_str)) 107 break; 108 109 if (!strncmp(lof->oper_str, buffer, strlen(lof->oper_str))) { 110 cnt = lof->oper_func(qedi_dbg); 111 break; 112 } 113 114 lof++; 115 } 116 return (count - cnt); 117 } 118 119 static ssize_t 120 qedi_dbg_do_not_recover_cmd_read(struct file *filp, char __user *buffer, 121 size_t count, loff_t *ppos) 122 { 123 size_t cnt = 0; 124 125 if (*ppos) 126 return 0; 127 128 cnt = sprintf(buffer, "do_not_recover=%d\n", qedi_do_not_recover); 129 cnt = min_t(int, count, cnt - *ppos); 130 *ppos += cnt; 131 return cnt; 132 } 133 134 static int 135 qedi_gbl_ctx_show(struct seq_file *s, void *unused) 136 { 137 struct qedi_fastpath *fp = NULL; 138 struct qed_sb_info *sb_info = NULL; 139 struct status_block_e4 *sb = NULL; 140 struct global_queue *que = NULL; 141 int id; 142 u16 prod_idx; 143 struct qedi_ctx *qedi = s->private; 144 unsigned long flags; 145 146 seq_puts(s, " DUMP CQ CONTEXT:\n"); 147 148 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 149 spin_lock_irqsave(&qedi->hba_lock, flags); 150 seq_printf(s, "=========FAST CQ PATH [%d] ==========\n", id); 151 fp = &qedi->fp_array[id]; 152 sb_info = fp->sb_info; 153 sb = sb_info->sb_virt; 154 prod_idx = (sb->pi_array[QEDI_PROTO_CQ_PROD_IDX] & 155 STATUS_BLOCK_E4_PROD_INDEX_MASK); 156 seq_printf(s, "SB PROD IDX: %d\n", prod_idx); 157 que = qedi->global_queues[fp->sb_id]; 158 seq_printf(s, "DRV CONS IDX: %d\n", que->cq_cons_idx); 159 seq_printf(s, "CQ complete host memory: %d\n", fp->sb_id); 160 seq_puts(s, "=========== END ==================\n\n\n"); 161 spin_unlock_irqrestore(&qedi->hba_lock, flags); 162 } 163 return 0; 164 } 165 166 static int 167 qedi_dbg_gbl_ctx_open(struct inode *inode, struct file *file) 168 { 169 struct qedi_dbg_ctx *qedi_dbg = inode->i_private; 170 struct qedi_ctx *qedi = container_of(qedi_dbg, struct qedi_ctx, 171 dbg_ctx); 172 173 return single_open(file, qedi_gbl_ctx_show, qedi); 174 } 175 176 static int 177 qedi_io_trace_show(struct seq_file *s, void *unused) 178 { 179 int id, idx = 0; 180 struct qedi_ctx *qedi = s->private; 181 struct qedi_io_log *io_log; 182 unsigned long flags; 183 184 seq_puts(s, " DUMP IO LOGS:\n"); 185 spin_lock_irqsave(&qedi->io_trace_lock, flags); 186 idx = qedi->io_trace_idx; 187 for (id = 0; id < QEDI_IO_TRACE_SIZE; id++) { 188 io_log = &qedi->io_trace_buf[idx]; 189 seq_printf(s, "iodir-%d:", io_log->direction); 190 seq_printf(s, "tid-0x%x:", io_log->task_id); 191 seq_printf(s, "cid-0x%x:", io_log->cid); 192 seq_printf(s, "lun-%d:", io_log->lun); 193 seq_printf(s, "op-0x%02x:", io_log->op); 194 seq_printf(s, "0x%02x%02x%02x%02x:", io_log->lba[0], 195 io_log->lba[1], io_log->lba[2], io_log->lba[3]); 196 seq_printf(s, "buflen-%d:", io_log->bufflen); 197 seq_printf(s, "sgcnt-%d:", io_log->sg_count); 198 seq_printf(s, "res-0x%08x:", io_log->result); 199 seq_printf(s, "jif-%lu:", io_log->jiffies); 200 seq_printf(s, "blk_req_cpu-%d:", io_log->blk_req_cpu); 201 seq_printf(s, "req_cpu-%d:", io_log->req_cpu); 202 seq_printf(s, "intr_cpu-%d:", io_log->intr_cpu); 203 seq_printf(s, "blk_rsp_cpu-%d\n", io_log->blk_rsp_cpu); 204 205 idx++; 206 if (idx == QEDI_IO_TRACE_SIZE) 207 idx = 0; 208 } 209 spin_unlock_irqrestore(&qedi->io_trace_lock, flags); 210 return 0; 211 } 212 213 static int 214 qedi_dbg_io_trace_open(struct inode *inode, struct file *file) 215 { 216 struct qedi_dbg_ctx *qedi_dbg = inode->i_private; 217 struct qedi_ctx *qedi = container_of(qedi_dbg, struct qedi_ctx, 218 dbg_ctx); 219 220 return single_open(file, qedi_io_trace_show, qedi); 221 } 222 223 const struct file_operations qedi_dbg_fops[] = { 224 qedi_dbg_fileops_seq(qedi, gbl_ctx), 225 qedi_dbg_fileops(qedi, do_not_recover), 226 qedi_dbg_fileops_seq(qedi, io_trace), 227 { }, 228 }; 229