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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * QLogic iSCSI Offload Driver4 * 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 14int qedi_do_not_recover;15static struct dentry *qedi_dbg_root;16 17void18qedi_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 38void39qedi_dbg_host_exit(struct qedi_dbg_ctx *qedi)40{41 debugfs_remove_recursive(qedi->bdf_dentry);42 qedi->bdf_dentry = NULL;43}44 45void46qedi_dbg_init(char *drv_name)47{48 qedi_dbg_root = debugfs_create_dir(drv_name, NULL);49}50 51void52qedi_dbg_exit(void)53{54 debugfs_remove_recursive(qedi_dbg_root);55 qedi_dbg_root = NULL;56}57 58static ssize_t59qedi_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 69static ssize_t70qedi_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 80static 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 86const 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 93static ssize_t94qedi_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 119static ssize_t120qedi_dbg_do_not_recover_cmd_read(struct file *filp, char __user *buffer,121 size_t count, loff_t *ppos)122{123 char buf[64];124 int len;125 126 len = sprintf(buf, "do_not_recover=%d\n", qedi_do_not_recover);127 return simple_read_from_buffer(buffer, count, ppos, buf, len);128}129 130static int131qedi_gbl_ctx_show(struct seq_file *s, void *unused)132{133 struct qedi_fastpath *fp = NULL;134 struct qed_sb_info *sb_info = NULL;135 struct status_block *sb = NULL;136 struct global_queue *que = NULL;137 int id;138 u16 prod_idx;139 struct qedi_ctx *qedi = s->private;140 unsigned long flags;141 142 seq_puts(s, " DUMP CQ CONTEXT:\n");143 144 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {145 spin_lock_irqsave(&qedi->hba_lock, flags);146 seq_printf(s, "=========FAST CQ PATH [%d] ==========\n", id);147 fp = &qedi->fp_array[id];148 sb_info = fp->sb_info;149 sb = sb_info->sb_virt;150 prod_idx = (sb->pi_array[QEDI_PROTO_CQ_PROD_IDX] &151 STATUS_BLOCK_PROD_INDEX_MASK);152 seq_printf(s, "SB PROD IDX: %d\n", prod_idx);153 que = qedi->global_queues[fp->sb_id];154 seq_printf(s, "DRV CONS IDX: %d\n", que->cq_cons_idx);155 seq_printf(s, "CQ complete host memory: %d\n", fp->sb_id);156 seq_puts(s, "=========== END ==================\n\n\n");157 spin_unlock_irqrestore(&qedi->hba_lock, flags);158 }159 return 0;160}161 162static int163qedi_dbg_gbl_ctx_open(struct inode *inode, struct file *file)164{165 struct qedi_dbg_ctx *qedi_dbg = inode->i_private;166 struct qedi_ctx *qedi = container_of(qedi_dbg, struct qedi_ctx,167 dbg_ctx);168 169 return single_open(file, qedi_gbl_ctx_show, qedi);170}171 172static int173qedi_io_trace_show(struct seq_file *s, void *unused)174{175 int id, idx = 0;176 struct qedi_ctx *qedi = s->private;177 struct qedi_io_log *io_log;178 unsigned long flags;179 180 seq_puts(s, " DUMP IO LOGS:\n");181 spin_lock_irqsave(&qedi->io_trace_lock, flags);182 idx = qedi->io_trace_idx;183 for (id = 0; id < QEDI_IO_TRACE_SIZE; id++) {184 io_log = &qedi->io_trace_buf[idx];185 seq_printf(s, "iodir-%d:", io_log->direction);186 seq_printf(s, "tid-0x%x:", io_log->task_id);187 seq_printf(s, "cid-0x%x:", io_log->cid);188 seq_printf(s, "lun-%d:", io_log->lun);189 seq_printf(s, "op-0x%02x:", io_log->op);190 seq_printf(s, "0x%02x%02x%02x%02x:", io_log->lba[0],191 io_log->lba[1], io_log->lba[2], io_log->lba[3]);192 seq_printf(s, "buflen-%d:", io_log->bufflen);193 seq_printf(s, "sgcnt-%d:", io_log->sg_count);194 seq_printf(s, "res-0x%08x:", io_log->result);195 seq_printf(s, "jif-%lu:", io_log->jiffies);196 seq_printf(s, "blk_req_cpu-%d:", io_log->blk_req_cpu);197 seq_printf(s, "req_cpu-%d:", io_log->req_cpu);198 seq_printf(s, "intr_cpu-%d:", io_log->intr_cpu);199 seq_printf(s, "blk_rsp_cpu-%d\n", io_log->blk_rsp_cpu);200 201 idx++;202 if (idx == QEDI_IO_TRACE_SIZE)203 idx = 0;204 }205 spin_unlock_irqrestore(&qedi->io_trace_lock, flags);206 return 0;207}208 209static int210qedi_dbg_io_trace_open(struct inode *inode, struct file *file)211{212 struct qedi_dbg_ctx *qedi_dbg = inode->i_private;213 struct qedi_ctx *qedi = container_of(qedi_dbg, struct qedi_ctx,214 dbg_ctx);215 216 return single_open(file, qedi_io_trace_show, qedi);217}218 219const struct file_operations qedi_dbg_fops[] = {220 qedi_dbg_fileops_seq(qedi, gbl_ctx),221 qedi_dbg_fileops(qedi, do_not_recover),222 qedi_dbg_fileops_seq(qedi, io_trace),223 { },224};225