245 lines
6 KiB
C
245 lines
6 KiB
C
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/*
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* QLogic iSCSI Offload Driver
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* Copyright (c) 2016 Cavium Inc.
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*
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* This software is available under the terms of the GNU General Public License
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* (GPL) Version 2, available from the file COPYING in the main directory of
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* this source tree.
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*/
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#include "qedi.h"
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#include "qedi_dbg.h"
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#include <linux/uaccess.h>
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#include <linux/debugfs.h>
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#include <linux/module.h>
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int qedi_do_not_recover;
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static struct dentry *qedi_dbg_root;
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void
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qedi_dbg_host_init(struct qedi_dbg_ctx *qedi,
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const struct qedi_debugfs_ops *dops,
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const struct file_operations *fops)
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{
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char host_dirname[32];
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struct dentry *file_dentry = NULL;
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sprintf(host_dirname, "host%u", qedi->host_no);
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qedi->bdf_dentry = debugfs_create_dir(host_dirname, qedi_dbg_root);
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if (!qedi->bdf_dentry)
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return;
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while (dops) {
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if (!(dops->name))
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break;
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file_dentry = debugfs_create_file(dops->name, 0600,
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qedi->bdf_dentry, qedi,
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fops);
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if (!file_dentry) {
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QEDI_INFO(qedi, QEDI_LOG_DEBUGFS,
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"Debugfs entry %s creation failed\n",
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dops->name);
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debugfs_remove_recursive(qedi->bdf_dentry);
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return;
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}
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dops++;
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fops++;
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}
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}
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void
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qedi_dbg_host_exit(struct qedi_dbg_ctx *qedi)
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{
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debugfs_remove_recursive(qedi->bdf_dentry);
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qedi->bdf_dentry = NULL;
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}
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void
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qedi_dbg_init(char *drv_name)
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{
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qedi_dbg_root = debugfs_create_dir(drv_name, NULL);
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if (!qedi_dbg_root)
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QEDI_INFO(NULL, QEDI_LOG_DEBUGFS, "Init of debugfs failed\n");
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}
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void
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qedi_dbg_exit(void)
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{
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debugfs_remove_recursive(qedi_dbg_root);
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qedi_dbg_root = NULL;
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}
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static ssize_t
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qedi_dbg_do_not_recover_enable(struct qedi_dbg_ctx *qedi_dbg)
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{
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if (!qedi_do_not_recover)
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qedi_do_not_recover = 1;
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QEDI_INFO(qedi_dbg, QEDI_LOG_DEBUGFS, "do_not_recover=%d\n",
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qedi_do_not_recover);
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return 0;
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}
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static ssize_t
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qedi_dbg_do_not_recover_disable(struct qedi_dbg_ctx *qedi_dbg)
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{
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if (qedi_do_not_recover)
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qedi_do_not_recover = 0;
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QEDI_INFO(qedi_dbg, QEDI_LOG_DEBUGFS, "do_not_recover=%d\n",
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qedi_do_not_recover);
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return 0;
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}
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static struct qedi_list_of_funcs qedi_dbg_do_not_recover_ops[] = {
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{ "enable", qedi_dbg_do_not_recover_enable },
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{ "disable", qedi_dbg_do_not_recover_disable },
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{ NULL, NULL }
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};
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const struct qedi_debugfs_ops qedi_debugfs_ops[] = {
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{ "gbl_ctx", NULL },
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{ "do_not_recover", qedi_dbg_do_not_recover_ops},
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{ "io_trace", NULL },
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{ NULL, NULL }
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};
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static ssize_t
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qedi_dbg_do_not_recover_cmd_write(struct file *filp, const char __user *buffer,
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size_t count, loff_t *ppos)
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{
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size_t cnt = 0;
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struct qedi_dbg_ctx *qedi_dbg =
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(struct qedi_dbg_ctx *)filp->private_data;
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struct qedi_list_of_funcs *lof = qedi_dbg_do_not_recover_ops;
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if (*ppos)
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return 0;
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while (lof) {
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if (!(lof->oper_str))
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break;
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if (!strncmp(lof->oper_str, buffer, strlen(lof->oper_str))) {
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cnt = lof->oper_func(qedi_dbg);
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break;
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}
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lof++;
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}
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return (count - cnt);
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}
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static ssize_t
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qedi_dbg_do_not_recover_cmd_read(struct file *filp, char __user *buffer,
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size_t count, loff_t *ppos)
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{
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size_t cnt = 0;
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if (*ppos)
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return 0;
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cnt = sprintf(buffer, "do_not_recover=%d\n", qedi_do_not_recover);
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cnt = min_t(int, count, cnt - *ppos);
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*ppos += cnt;
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return cnt;
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}
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static int
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qedi_gbl_ctx_show(struct seq_file *s, void *unused)
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{
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struct qedi_fastpath *fp = NULL;
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struct qed_sb_info *sb_info = NULL;
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struct status_block_e4 *sb = NULL;
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struct global_queue *que = NULL;
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int id;
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u16 prod_idx;
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struct qedi_ctx *qedi = s->private;
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unsigned long flags;
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seq_puts(s, " DUMP CQ CONTEXT:\n");
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for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
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spin_lock_irqsave(&qedi->hba_lock, flags);
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seq_printf(s, "=========FAST CQ PATH [%d] ==========\n", id);
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fp = &qedi->fp_array[id];
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sb_info = fp->sb_info;
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sb = sb_info->sb_virt;
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prod_idx = (sb->pi_array[QEDI_PROTO_CQ_PROD_IDX] &
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STATUS_BLOCK_E4_PROD_INDEX_MASK);
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seq_printf(s, "SB PROD IDX: %d\n", prod_idx);
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que = qedi->global_queues[fp->sb_id];
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seq_printf(s, "DRV CONS IDX: %d\n", que->cq_cons_idx);
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seq_printf(s, "CQ complete host memory: %d\n", fp->sb_id);
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seq_puts(s, "=========== END ==================\n\n\n");
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spin_unlock_irqrestore(&qedi->hba_lock, flags);
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}
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return 0;
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}
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static int
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qedi_dbg_gbl_ctx_open(struct inode *inode, struct file *file)
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{
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struct qedi_dbg_ctx *qedi_dbg = inode->i_private;
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struct qedi_ctx *qedi = container_of(qedi_dbg, struct qedi_ctx,
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dbg_ctx);
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return single_open(file, qedi_gbl_ctx_show, qedi);
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}
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static int
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qedi_io_trace_show(struct seq_file *s, void *unused)
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{
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int id, idx = 0;
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struct qedi_ctx *qedi = s->private;
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struct qedi_io_log *io_log;
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unsigned long flags;
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seq_puts(s, " DUMP IO LOGS:\n");
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spin_lock_irqsave(&qedi->io_trace_lock, flags);
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idx = qedi->io_trace_idx;
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for (id = 0; id < QEDI_IO_TRACE_SIZE; id++) {
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io_log = &qedi->io_trace_buf[idx];
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seq_printf(s, "iodir-%d:", io_log->direction);
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seq_printf(s, "tid-0x%x:", io_log->task_id);
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seq_printf(s, "cid-0x%x:", io_log->cid);
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seq_printf(s, "lun-%d:", io_log->lun);
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seq_printf(s, "op-0x%02x:", io_log->op);
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seq_printf(s, "0x%02x%02x%02x%02x:", io_log->lba[0],
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io_log->lba[1], io_log->lba[2], io_log->lba[3]);
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seq_printf(s, "buflen-%d:", io_log->bufflen);
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seq_printf(s, "sgcnt-%d:", io_log->sg_count);
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seq_printf(s, "res-0x%08x:", io_log->result);
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seq_printf(s, "jif-%lu:", io_log->jiffies);
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seq_printf(s, "blk_req_cpu-%d:", io_log->blk_req_cpu);
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seq_printf(s, "req_cpu-%d:", io_log->req_cpu);
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seq_printf(s, "intr_cpu-%d:", io_log->intr_cpu);
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seq_printf(s, "blk_rsp_cpu-%d\n", io_log->blk_rsp_cpu);
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idx++;
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if (idx == QEDI_IO_TRACE_SIZE)
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idx = 0;
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}
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spin_unlock_irqrestore(&qedi->io_trace_lock, flags);
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return 0;
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}
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static int
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qedi_dbg_io_trace_open(struct inode *inode, struct file *file)
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{
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struct qedi_dbg_ctx *qedi_dbg = inode->i_private;
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struct qedi_ctx *qedi = container_of(qedi_dbg, struct qedi_ctx,
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dbg_ctx);
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return single_open(file, qedi_io_trace_show, qedi);
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}
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const struct file_operations qedi_dbg_fops[] = {
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qedi_dbg_fileops_seq(qedi, gbl_ctx),
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qedi_dbg_fileops(qedi, do_not_recover),
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qedi_dbg_fileops_seq(qedi, io_trace),
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{ },
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};
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