/drivers/scsi/qla2xxx/qla_dfs.c
http://github.com/mirrors/linux · C · 531 lines · 433 code · 89 blank · 9 comment · 45 complexity · 70c2103c7fa8588a8e31c4f9c059327b MD5 · raw file
- /*
- * QLogic Fibre Channel HBA Driver
- * Copyright (c) 2003-2014 QLogic Corporation
- *
- * See LICENSE.qla2xxx for copyright and licensing details.
- */
- #include "qla_def.h"
- #include <linux/debugfs.h>
- #include <linux/seq_file.h>
- static struct dentry *qla2x00_dfs_root;
- static atomic_t qla2x00_dfs_root_count;
- static int
- qla2x00_dfs_tgt_sess_show(struct seq_file *s, void *unused)
- {
- scsi_qla_host_t *vha = s->private;
- struct qla_hw_data *ha = vha->hw;
- unsigned long flags;
- struct fc_port *sess = NULL;
- struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
- seq_printf(s, "%s\n", vha->host_str);
- if (tgt) {
- seq_puts(s, "Port ID Port Name Handle\n");
- spin_lock_irqsave(&ha->tgt.sess_lock, flags);
- list_for_each_entry(sess, &vha->vp_fcports, list)
- seq_printf(s, "%02x:%02x:%02x %8phC %d\n",
- sess->d_id.b.domain, sess->d_id.b.area,
- sess->d_id.b.al_pa, sess->port_name,
- sess->loop_id);
- spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
- }
- return 0;
- }
- static int
- qla2x00_dfs_tgt_sess_open(struct inode *inode, struct file *file)
- {
- scsi_qla_host_t *vha = inode->i_private;
- return single_open(file, qla2x00_dfs_tgt_sess_show, vha);
- }
- static const struct file_operations dfs_tgt_sess_ops = {
- .open = qla2x00_dfs_tgt_sess_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- };
- static int
- qla2x00_dfs_tgt_port_database_show(struct seq_file *s, void *unused)
- {
- scsi_qla_host_t *vha = s->private;
- struct qla_hw_data *ha = vha->hw;
- struct gid_list_info *gid_list, *gid;
- dma_addr_t gid_list_dma;
- fc_port_t fc_port;
- int rc, i;
- uint16_t entries, loop_id;
- struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
- seq_printf(s, "%s\n", vha->host_str);
- if (tgt) {
- gid_list = dma_alloc_coherent(&ha->pdev->dev,
- qla2x00_gid_list_size(ha),
- &gid_list_dma, GFP_KERNEL);
- if (!gid_list) {
- ql_dbg(ql_dbg_user, vha, 0x7018,
- "DMA allocation failed for %u\n",
- qla2x00_gid_list_size(ha));
- return 0;
- }
- rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma,
- &entries);
- if (rc != QLA_SUCCESS)
- goto out_free_id_list;
- gid = gid_list;
- seq_puts(s, "Port Name Port ID Loop ID\n");
- for (i = 0; i < entries; i++) {
- loop_id = le16_to_cpu(gid->loop_id);
- memset(&fc_port, 0, sizeof(fc_port_t));
- fc_port.loop_id = loop_id;
- rc = qla24xx_gpdb_wait(vha, &fc_port, 0);
- seq_printf(s, "%8phC %02x%02x%02x %d\n",
- fc_port.port_name, fc_port.d_id.b.domain,
- fc_port.d_id.b.area, fc_port.d_id.b.al_pa,
- fc_port.loop_id);
- gid = (void *)gid + ha->gid_list_info_size;
- }
- out_free_id_list:
- dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
- gid_list, gid_list_dma);
- }
- return 0;
- }
- static int
- qla2x00_dfs_tgt_port_database_open(struct inode *inode, struct file *file)
- {
- scsi_qla_host_t *vha = inode->i_private;
- return single_open(file, qla2x00_dfs_tgt_port_database_show, vha);
- }
- static const struct file_operations dfs_tgt_port_database_ops = {
- .open = qla2x00_dfs_tgt_port_database_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- };
- static int
- qla_dfs_fw_resource_cnt_show(struct seq_file *s, void *unused)
- {
- struct scsi_qla_host *vha = s->private;
- uint16_t mb[MAX_IOCB_MB_REG];
- int rc;
- rc = qla24xx_res_count_wait(vha, mb, SIZEOF_IOCB_MB_REG);
- if (rc != QLA_SUCCESS) {
- seq_printf(s, "Mailbox Command failed %d, mb %#x", rc, mb[0]);
- } else {
- seq_puts(s, "FW Resource count\n\n");
- seq_printf(s, "Original TGT exchg count[%d]\n", mb[1]);
- seq_printf(s, "Current TGT exchg count[%d]\n", mb[2]);
- seq_printf(s, "Current Initiator Exchange count[%d]\n", mb[3]);
- seq_printf(s, "Original Initiator Exchange count[%d]\n", mb[6]);
- seq_printf(s, "Current IOCB count[%d]\n", mb[7]);
- seq_printf(s, "Original IOCB count[%d]\n", mb[10]);
- seq_printf(s, "MAX VP count[%d]\n", mb[11]);
- seq_printf(s, "MAX FCF count[%d]\n", mb[12]);
- seq_printf(s, "Current free pageable XCB buffer cnt[%d]\n",
- mb[20]);
- seq_printf(s, "Original Initiator fast XCB buffer cnt[%d]\n",
- mb[21]);
- seq_printf(s, "Current free Initiator fast XCB buffer cnt[%d]\n",
- mb[22]);
- seq_printf(s, "Original Target fast XCB buffer cnt[%d]\n",
- mb[23]);
- }
- return 0;
- }
- static int
- qla_dfs_fw_resource_cnt_open(struct inode *inode, struct file *file)
- {
- struct scsi_qla_host *vha = inode->i_private;
- return single_open(file, qla_dfs_fw_resource_cnt_show, vha);
- }
- static const struct file_operations dfs_fw_resource_cnt_ops = {
- .open = qla_dfs_fw_resource_cnt_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- };
- static int
- qla_dfs_tgt_counters_show(struct seq_file *s, void *unused)
- {
- struct scsi_qla_host *vha = s->private;
- struct qla_qpair *qpair = vha->hw->base_qpair;
- uint64_t qla_core_sbt_cmd, core_qla_que_buf, qla_core_ret_ctio,
- core_qla_snd_status, qla_core_ret_sta_ctio, core_qla_free_cmd,
- num_q_full_sent, num_alloc_iocb_failed, num_term_xchg_sent;
- u16 i;
- qla_core_sbt_cmd = qpair->tgt_counters.qla_core_sbt_cmd;
- core_qla_que_buf = qpair->tgt_counters.core_qla_que_buf;
- qla_core_ret_ctio = qpair->tgt_counters.qla_core_ret_ctio;
- core_qla_snd_status = qpair->tgt_counters.core_qla_snd_status;
- qla_core_ret_sta_ctio = qpair->tgt_counters.qla_core_ret_sta_ctio;
- core_qla_free_cmd = qpair->tgt_counters.core_qla_free_cmd;
- num_q_full_sent = qpair->tgt_counters.num_q_full_sent;
- num_alloc_iocb_failed = qpair->tgt_counters.num_alloc_iocb_failed;
- num_term_xchg_sent = qpair->tgt_counters.num_term_xchg_sent;
- for (i = 0; i < vha->hw->max_qpairs; i++) {
- qpair = vha->hw->queue_pair_map[i];
- if (!qpair)
- continue;
- qla_core_sbt_cmd += qpair->tgt_counters.qla_core_sbt_cmd;
- core_qla_que_buf += qpair->tgt_counters.core_qla_que_buf;
- qla_core_ret_ctio += qpair->tgt_counters.qla_core_ret_ctio;
- core_qla_snd_status += qpair->tgt_counters.core_qla_snd_status;
- qla_core_ret_sta_ctio +=
- qpair->tgt_counters.qla_core_ret_sta_ctio;
- core_qla_free_cmd += qpair->tgt_counters.core_qla_free_cmd;
- num_q_full_sent += qpair->tgt_counters.num_q_full_sent;
- num_alloc_iocb_failed +=
- qpair->tgt_counters.num_alloc_iocb_failed;
- num_term_xchg_sent += qpair->tgt_counters.num_term_xchg_sent;
- }
- seq_puts(s, "Target Counters\n");
- seq_printf(s, "qla_core_sbt_cmd = %lld\n",
- qla_core_sbt_cmd);
- seq_printf(s, "qla_core_ret_sta_ctio = %lld\n",
- qla_core_ret_sta_ctio);
- seq_printf(s, "qla_core_ret_ctio = %lld\n",
- qla_core_ret_ctio);
- seq_printf(s, "core_qla_que_buf = %lld\n",
- core_qla_que_buf);
- seq_printf(s, "core_qla_snd_status = %lld\n",
- core_qla_snd_status);
- seq_printf(s, "core_qla_free_cmd = %lld\n",
- core_qla_free_cmd);
- seq_printf(s, "num alloc iocb failed = %lld\n",
- num_alloc_iocb_failed);
- seq_printf(s, "num term exchange sent = %lld\n",
- num_term_xchg_sent);
- seq_printf(s, "num Q full sent = %lld\n",
- num_q_full_sent);
- /* DIF stats */
- seq_printf(s, "DIF Inp Bytes = %lld\n",
- vha->qla_stats.qla_dif_stats.dif_input_bytes);
- seq_printf(s, "DIF Outp Bytes = %lld\n",
- vha->qla_stats.qla_dif_stats.dif_output_bytes);
- seq_printf(s, "DIF Inp Req = %lld\n",
- vha->qla_stats.qla_dif_stats.dif_input_requests);
- seq_printf(s, "DIF Outp Req = %lld\n",
- vha->qla_stats.qla_dif_stats.dif_output_requests);
- seq_printf(s, "DIF Guard err = %d\n",
- vha->qla_stats.qla_dif_stats.dif_guard_err);
- seq_printf(s, "DIF Ref tag err = %d\n",
- vha->qla_stats.qla_dif_stats.dif_ref_tag_err);
- seq_printf(s, "DIF App tag err = %d\n",
- vha->qla_stats.qla_dif_stats.dif_app_tag_err);
- return 0;
- }
- static int
- qla_dfs_tgt_counters_open(struct inode *inode, struct file *file)
- {
- struct scsi_qla_host *vha = inode->i_private;
- return single_open(file, qla_dfs_tgt_counters_show, vha);
- }
- static const struct file_operations dfs_tgt_counters_ops = {
- .open = qla_dfs_tgt_counters_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- };
- static int
- qla2x00_dfs_fce_show(struct seq_file *s, void *unused)
- {
- scsi_qla_host_t *vha = s->private;
- uint32_t cnt;
- uint32_t *fce;
- uint64_t fce_start;
- struct qla_hw_data *ha = vha->hw;
- mutex_lock(&ha->fce_mutex);
- seq_puts(s, "FCE Trace Buffer\n");
- seq_printf(s, "In Pointer = %llx\n\n", (unsigned long long)ha->fce_wr);
- seq_printf(s, "Base = %llx\n\n", (unsigned long long) ha->fce_dma);
- seq_puts(s, "FCE Enable Registers\n");
- seq_printf(s, "%08x %08x %08x %08x %08x %08x\n",
- ha->fce_mb[0], ha->fce_mb[2], ha->fce_mb[3], ha->fce_mb[4],
- ha->fce_mb[5], ha->fce_mb[6]);
- fce = (uint32_t *) ha->fce;
- fce_start = (unsigned long long) ha->fce_dma;
- for (cnt = 0; cnt < fce_calc_size(ha->fce_bufs) / 4; cnt++) {
- if (cnt % 8 == 0)
- seq_printf(s, "\n%llx: ",
- (unsigned long long)((cnt * 4) + fce_start));
- else
- seq_putc(s, ' ');
- seq_printf(s, "%08x", *fce++);
- }
- seq_puts(s, "\nEnd\n");
- mutex_unlock(&ha->fce_mutex);
- return 0;
- }
- static int
- qla2x00_dfs_fce_open(struct inode *inode, struct file *file)
- {
- scsi_qla_host_t *vha = inode->i_private;
- struct qla_hw_data *ha = vha->hw;
- int rval;
- if (!ha->flags.fce_enabled)
- goto out;
- mutex_lock(&ha->fce_mutex);
- /* Pause tracing to flush FCE buffers. */
- rval = qla2x00_disable_fce_trace(vha, &ha->fce_wr, &ha->fce_rd);
- if (rval)
- ql_dbg(ql_dbg_user, vha, 0x705c,
- "DebugFS: Unable to disable FCE (%d).\n", rval);
- ha->flags.fce_enabled = 0;
- mutex_unlock(&ha->fce_mutex);
- out:
- return single_open(file, qla2x00_dfs_fce_show, vha);
- }
- static int
- qla2x00_dfs_fce_release(struct inode *inode, struct file *file)
- {
- scsi_qla_host_t *vha = inode->i_private;
- struct qla_hw_data *ha = vha->hw;
- int rval;
- if (ha->flags.fce_enabled)
- goto out;
- mutex_lock(&ha->fce_mutex);
- /* Re-enable FCE tracing. */
- ha->flags.fce_enabled = 1;
- memset(ha->fce, 0, fce_calc_size(ha->fce_bufs));
- rval = qla2x00_enable_fce_trace(vha, ha->fce_dma, ha->fce_bufs,
- ha->fce_mb, &ha->fce_bufs);
- if (rval) {
- ql_dbg(ql_dbg_user, vha, 0x700d,
- "DebugFS: Unable to reinitialize FCE (%d).\n", rval);
- ha->flags.fce_enabled = 0;
- }
- mutex_unlock(&ha->fce_mutex);
- out:
- return single_release(inode, file);
- }
- static const struct file_operations dfs_fce_ops = {
- .open = qla2x00_dfs_fce_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = qla2x00_dfs_fce_release,
- };
- static int
- qla_dfs_naqp_show(struct seq_file *s, void *unused)
- {
- struct scsi_qla_host *vha = s->private;
- struct qla_hw_data *ha = vha->hw;
- seq_printf(s, "%d\n", ha->tgt.num_act_qpairs);
- return 0;
- }
- static int
- qla_dfs_naqp_open(struct inode *inode, struct file *file)
- {
- struct scsi_qla_host *vha = inode->i_private;
- return single_open(file, qla_dfs_naqp_show, vha);
- }
- static ssize_t
- qla_dfs_naqp_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *pos)
- {
- struct seq_file *s = file->private_data;
- struct scsi_qla_host *vha = s->private;
- struct qla_hw_data *ha = vha->hw;
- char *buf;
- int rc = 0;
- unsigned long num_act_qp;
- if (!(IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha))) {
- pr_err("host%ld: this adapter does not support Multi Q.",
- vha->host_no);
- return -EINVAL;
- }
- if (!vha->flags.qpairs_available) {
- pr_err("host%ld: Driver is not setup with Multi Q.",
- vha->host_no);
- return -EINVAL;
- }
- buf = memdup_user_nul(buffer, count);
- if (IS_ERR(buf)) {
- pr_err("host%ld: fail to copy user buffer.",
- vha->host_no);
- return PTR_ERR(buf);
- }
- num_act_qp = simple_strtoul(buf, NULL, 0);
- if (num_act_qp >= vha->hw->max_qpairs) {
- pr_err("User set invalid number of qpairs %lu. Max = %d",
- num_act_qp, vha->hw->max_qpairs);
- rc = -EINVAL;
- goto out_free;
- }
- if (num_act_qp != ha->tgt.num_act_qpairs) {
- ha->tgt.num_act_qpairs = num_act_qp;
- qlt_clr_qp_table(vha);
- }
- rc = count;
- out_free:
- kfree(buf);
- return rc;
- }
- static const struct file_operations dfs_naqp_ops = {
- .open = qla_dfs_naqp_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = qla_dfs_naqp_write,
- };
- int
- qla2x00_dfs_setup(scsi_qla_host_t *vha)
- {
- struct qla_hw_data *ha = vha->hw;
- if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
- !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
- goto out;
- if (!ha->fce)
- goto out;
- if (qla2x00_dfs_root)
- goto create_dir;
- atomic_set(&qla2x00_dfs_root_count, 0);
- qla2x00_dfs_root = debugfs_create_dir(QLA2XXX_DRIVER_NAME, NULL);
- create_dir:
- if (ha->dfs_dir)
- goto create_nodes;
- mutex_init(&ha->fce_mutex);
- ha->dfs_dir = debugfs_create_dir(vha->host_str, qla2x00_dfs_root);
- atomic_inc(&qla2x00_dfs_root_count);
- create_nodes:
- ha->dfs_fw_resource_cnt = debugfs_create_file("fw_resource_count",
- S_IRUSR, ha->dfs_dir, vha, &dfs_fw_resource_cnt_ops);
- ha->dfs_tgt_counters = debugfs_create_file("tgt_counters", S_IRUSR,
- ha->dfs_dir, vha, &dfs_tgt_counters_ops);
- ha->tgt.dfs_tgt_port_database = debugfs_create_file("tgt_port_database",
- S_IRUSR, ha->dfs_dir, vha, &dfs_tgt_port_database_ops);
- ha->dfs_fce = debugfs_create_file("fce", S_IRUSR, ha->dfs_dir, vha,
- &dfs_fce_ops);
- ha->tgt.dfs_tgt_sess = debugfs_create_file("tgt_sess",
- S_IRUSR, ha->dfs_dir, vha, &dfs_tgt_sess_ops);
- if (IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha))
- ha->tgt.dfs_naqp = debugfs_create_file("naqp",
- 0400, ha->dfs_dir, vha, &dfs_naqp_ops);
- out:
- return 0;
- }
- int
- qla2x00_dfs_remove(scsi_qla_host_t *vha)
- {
- struct qla_hw_data *ha = vha->hw;
- if (ha->tgt.dfs_naqp) {
- debugfs_remove(ha->tgt.dfs_naqp);
- ha->tgt.dfs_naqp = NULL;
- }
- if (ha->tgt.dfs_tgt_sess) {
- debugfs_remove(ha->tgt.dfs_tgt_sess);
- ha->tgt.dfs_tgt_sess = NULL;
- }
- if (ha->tgt.dfs_tgt_port_database) {
- debugfs_remove(ha->tgt.dfs_tgt_port_database);
- ha->tgt.dfs_tgt_port_database = NULL;
- }
- if (ha->dfs_fw_resource_cnt) {
- debugfs_remove(ha->dfs_fw_resource_cnt);
- ha->dfs_fw_resource_cnt = NULL;
- }
- if (ha->dfs_tgt_counters) {
- debugfs_remove(ha->dfs_tgt_counters);
- ha->dfs_tgt_counters = NULL;
- }
- if (ha->dfs_fce) {
- debugfs_remove(ha->dfs_fce);
- ha->dfs_fce = NULL;
- }
- if (ha->dfs_dir) {
- debugfs_remove(ha->dfs_dir);
- ha->dfs_dir = NULL;
- atomic_dec(&qla2x00_dfs_root_count);
- }
- if (atomic_read(&qla2x00_dfs_root_count) == 0 &&
- qla2x00_dfs_root) {
- debugfs_remove(qla2x00_dfs_root);
- qla2x00_dfs_root = NULL;
- }
- return 0;
- }