diff options
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_dfs.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_dfs.c | 780 |
1 files changed, 780 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_dfs.c b/drivers/scsi/qla2xxx/qla_dfs.c new file mode 100644 index 000000000..a7a364760 --- /dev/null +++ b/drivers/scsi/qla2xxx/qla_dfs.c @@ -0,0 +1,780 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * QLogic Fibre Channel HBA Driver + * Copyright (c) 2003-2014 QLogic Corporation + */ +#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; + +#define QLA_DFS_RPORT_DEVLOSS_TMO 1 + +static int +qla_dfs_rport_get(struct fc_port *fp, int attr_id, u64 *val) +{ + switch (attr_id) { + case QLA_DFS_RPORT_DEVLOSS_TMO: + /* Only supported for FC-NVMe devices that are registered. */ + if (!(fp->nvme_flag & NVME_FLAG_REGISTERED)) + return -EIO; + *val = fp->nvme_remote_port->dev_loss_tmo; + break; + default: + return -EINVAL; + } + return 0; +} + +static int +qla_dfs_rport_set(struct fc_port *fp, int attr_id, u64 val) +{ + switch (attr_id) { + case QLA_DFS_RPORT_DEVLOSS_TMO: + /* Only supported for FC-NVMe devices that are registered. */ + if (!(fp->nvme_flag & NVME_FLAG_REGISTERED)) + return -EIO; +#if (IS_ENABLED(CONFIG_NVME_FC)) + return nvme_fc_set_remoteport_devloss(fp->nvme_remote_port, + val); +#else /* CONFIG_NVME_FC */ + return -EINVAL; +#endif /* CONFIG_NVME_FC */ + default: + return -EINVAL; + } + return 0; +} + +#define DEFINE_QLA_DFS_RPORT_RW_ATTR(_attr_id, _attr) \ +static int qla_dfs_rport_##_attr##_get(void *data, u64 *val) \ +{ \ + struct fc_port *fp = data; \ + return qla_dfs_rport_get(fp, _attr_id, val); \ +} \ +static int qla_dfs_rport_##_attr##_set(void *data, u64 val) \ +{ \ + struct fc_port *fp = data; \ + return qla_dfs_rport_set(fp, _attr_id, val); \ +} \ +DEFINE_DEBUGFS_ATTRIBUTE(qla_dfs_rport_##_attr##_fops, \ + qla_dfs_rport_##_attr##_get, \ + qla_dfs_rport_##_attr##_set, "%llu\n") + +/* + * Wrapper for getting fc_port fields. + * + * _attr : Attribute name. + * _get_val : Accessor macro to retrieve the value. + */ +#define DEFINE_QLA_DFS_RPORT_FIELD_GET(_attr, _get_val) \ +static int qla_dfs_rport_field_##_attr##_get(void *data, u64 *val) \ +{ \ + struct fc_port *fp = data; \ + *val = _get_val; \ + return 0; \ +} \ +DEFINE_DEBUGFS_ATTRIBUTE(qla_dfs_rport_field_##_attr##_fops, \ + qla_dfs_rport_field_##_attr##_get, \ + NULL, "%llu\n") + +#define DEFINE_QLA_DFS_RPORT_ACCESS(_attr, _get_val) \ + DEFINE_QLA_DFS_RPORT_FIELD_GET(_attr, _get_val) + +#define DEFINE_QLA_DFS_RPORT_FIELD(_attr) \ + DEFINE_QLA_DFS_RPORT_FIELD_GET(_attr, fp->_attr) + +DEFINE_QLA_DFS_RPORT_RW_ATTR(QLA_DFS_RPORT_DEVLOSS_TMO, dev_loss_tmo); + +DEFINE_QLA_DFS_RPORT_FIELD(disc_state); +DEFINE_QLA_DFS_RPORT_FIELD(scan_state); +DEFINE_QLA_DFS_RPORT_FIELD(fw_login_state); +DEFINE_QLA_DFS_RPORT_FIELD(login_pause); +DEFINE_QLA_DFS_RPORT_FIELD(flags); +DEFINE_QLA_DFS_RPORT_FIELD(nvme_flag); +DEFINE_QLA_DFS_RPORT_FIELD(last_rscn_gen); +DEFINE_QLA_DFS_RPORT_FIELD(rscn_gen); +DEFINE_QLA_DFS_RPORT_FIELD(login_gen); +DEFINE_QLA_DFS_RPORT_FIELD(loop_id); +DEFINE_QLA_DFS_RPORT_FIELD_GET(port_id, fp->d_id.b24); +DEFINE_QLA_DFS_RPORT_FIELD_GET(sess_kref, kref_read(&fp->sess_kref)); + +void +qla2x00_dfs_create_rport(scsi_qla_host_t *vha, struct fc_port *fp) +{ + char wwn[32]; + +#define QLA_CREATE_RPORT_FIELD_ATTR(_attr) \ + debugfs_create_file(#_attr, 0400, fp->dfs_rport_dir, \ + fp, &qla_dfs_rport_field_##_attr##_fops) + + if (!vha->dfs_rport_root || fp->dfs_rport_dir) + return; + + sprintf(wwn, "pn-%016llx", wwn_to_u64(fp->port_name)); + fp->dfs_rport_dir = debugfs_create_dir(wwn, vha->dfs_rport_root); + if (IS_ERR(fp->dfs_rport_dir)) + return; + if (NVME_TARGET(vha->hw, fp)) + debugfs_create_file("dev_loss_tmo", 0600, fp->dfs_rport_dir, + fp, &qla_dfs_rport_dev_loss_tmo_fops); + + QLA_CREATE_RPORT_FIELD_ATTR(disc_state); + QLA_CREATE_RPORT_FIELD_ATTR(scan_state); + QLA_CREATE_RPORT_FIELD_ATTR(fw_login_state); + QLA_CREATE_RPORT_FIELD_ATTR(login_pause); + QLA_CREATE_RPORT_FIELD_ATTR(flags); + QLA_CREATE_RPORT_FIELD_ATTR(nvme_flag); + QLA_CREATE_RPORT_FIELD_ATTR(last_rscn_gen); + QLA_CREATE_RPORT_FIELD_ATTR(rscn_gen); + QLA_CREATE_RPORT_FIELD_ATTR(login_gen); + QLA_CREATE_RPORT_FIELD_ATTR(loop_id); + QLA_CREATE_RPORT_FIELD_ATTR(port_id); + QLA_CREATE_RPORT_FIELD_ATTR(sess_kref); +} + +void +qla2x00_dfs_remove_rport(scsi_qla_host_t *vha, struct fc_port *fp) +{ + if (!vha->dfs_rport_root || !fp->dfs_rport_dir) + return; + debugfs_remove_recursive(fp->dfs_rport_dir); + fp->dfs_rport_dir = NULL; +} + +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; +} + +DEFINE_SHOW_ATTRIBUTE(qla2x00_dfs_tgt_sess); + +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; + dma_addr_t gid_list_dma; + fc_port_t fc_port; + char *id_iter; + int rc, i; + uint16_t entries, loop_id; + + seq_printf(s, "%s\n", vha->host_str); + 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; + + id_iter = (char *)gid_list; + + seq_puts(s, "Port Name Port ID Loop ID\n"); + + for (i = 0; i < entries; i++) { + struct gid_list_info *gid = + (struct gid_list_info *)id_iter; + 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); + id_iter += 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; +} + +DEFINE_SHOW_ATTRIBUTE(qla2x00_dfs_tgt_port_database); + +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; + struct qla_hw_data *ha = vha->hw; + u16 iocbs_used, i, exch_used; + + 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]); + } + + if (ql2xenforce_iocb_limit) { + /* lock is not require. It's an estimate. */ + iocbs_used = ha->base_qpair->fwres.iocbs_used; + exch_used = ha->base_qpair->fwres.exch_used; + for (i = 0; i < ha->max_qpairs; i++) { + if (ha->queue_pair_map[i]) { + iocbs_used += ha->queue_pair_map[i]->fwres.iocbs_used; + exch_used += ha->queue_pair_map[i]->fwres.exch_used; + } + } + + seq_printf(s, "Driver: estimate iocb used [%d] high water limit [%d]\n", + iocbs_used, ha->base_qpair->fwres.iocbs_limit); + + seq_printf(s, "estimate exchange used[%d] high water limit [%d] n", + exch_used, ha->base_qpair->fwres.exch_limit); + + if (ql2xenforce_iocb_limit == 2) { + iocbs_used = atomic_read(&ha->fwres.iocb_used); + exch_used = atomic_read(&ha->fwres.exch_used); + seq_printf(s, " estimate iocb2 used [%d] high water limit [%d]\n", + iocbs_used, ha->fwres.iocb_limit); + + seq_printf(s, " estimate exchange2 used[%d] high water limit [%d] \n", + exch_used, ha->fwres.exch_limit); + } + } + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(qla_dfs_fw_resource_cnt); + +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; + fc_port_t *fcport = NULL; + + if (qla2x00_chip_is_down(vha)) + return 0; + + 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); + + seq_puts(s, "\n"); + seq_puts(s, "Initiator Error Counters\n"); + seq_printf(s, "HW Error Count = %14lld\n", + vha->hw_err_cnt); + seq_printf(s, "Link Down Count = %14lld\n", + vha->short_link_down_cnt); + seq_printf(s, "Interface Err Count = %14lld\n", + vha->interface_err_cnt); + seq_printf(s, "Cmd Timeout Count = %14lld\n", + vha->cmd_timeout_cnt); + seq_printf(s, "Reset Count = %14lld\n", + vha->reset_cmd_err_cnt); + seq_puts(s, "\n"); + + list_for_each_entry(fcport, &vha->vp_fcports, list) { + if (!fcport->rport) + continue; + + seq_printf(s, "Target Num = %7d Link Down Count = %14lld\n", + fcport->rport->number, fcport->tgt_short_link_down_cnt); + } + seq_puts(s, "\n"); + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(qla_dfs_tgt_counters); + +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; +} + +/* + * Helper macros for setting up debugfs entries. + * _name: The name of the debugfs entry + * _ctx_struct: The context that was passed when creating the debugfs file + * + * QLA_DFS_SETUP_RD could be used when there is only a show function. + * - show function take the name qla_dfs_<sysfs-name>_show + * + * QLA_DFS_SETUP_RW could be used when there are both show and write functions. + * - show function take the name qla_dfs_<sysfs-name>_show + * - write function take the name qla_dfs_<sysfs-name>_write + * + * To have a new debugfs entry, do: + * 1. Create a "struct dentry *" in the appropriate structure in the format + * dfs_<sysfs-name> + * 2. Setup debugfs entries using QLA_DFS_SETUP_RD / QLA_DFS_SETUP_RW + * 3. Create debugfs file in qla2x00_dfs_setup() using QLA_DFS_CREATE_FILE + * or QLA_DFS_ROOT_CREATE_FILE + * 4. Remove debugfs file in qla2x00_dfs_remove() using QLA_DFS_REMOVE_FILE + * or QLA_DFS_ROOT_REMOVE_FILE + * + * Example for creating "TEST" sysfs file: + * 1. struct qla_hw_data { ... struct dentry *dfs_TEST; } + * 2. QLA_DFS_SETUP_RD(TEST, scsi_qla_host_t); + * 3. In qla2x00_dfs_setup(): + * QLA_DFS_CREATE_FILE(ha, TEST, 0600, ha->dfs_dir, vha); + * 4. In qla2x00_dfs_remove(): + * QLA_DFS_REMOVE_FILE(ha, TEST); + */ +#define QLA_DFS_SETUP_RD(_name, _ctx_struct) \ +static int \ +qla_dfs_##_name##_open(struct inode *inode, struct file *file) \ +{ \ + _ctx_struct *__ctx = inode->i_private; \ + \ + return single_open(file, qla_dfs_##_name##_show, __ctx); \ +} \ + \ +static const struct file_operations qla_dfs_##_name##_ops = { \ + .open = qla_dfs_##_name##_open, \ + .read = seq_read, \ + .llseek = seq_lseek, \ + .release = single_release, \ +}; + +#define QLA_DFS_SETUP_RW(_name, _ctx_struct) \ +static int \ +qla_dfs_##_name##_open(struct inode *inode, struct file *file) \ +{ \ + _ctx_struct *__ctx = inode->i_private; \ + \ + return single_open(file, qla_dfs_##_name##_show, __ctx); \ +} \ + \ +static const struct file_operations qla_dfs_##_name##_ops = { \ + .open = qla_dfs_##_name##_open, \ + .read = seq_read, \ + .llseek = seq_lseek, \ + .release = single_release, \ + .write = qla_dfs_##_name##_write, \ +}; + +#define QLA_DFS_ROOT_CREATE_FILE(_name, _perm, _ctx) \ + do { \ + if (!qla_dfs_##_name) \ + qla_dfs_##_name = debugfs_create_file(#_name, \ + _perm, qla2x00_dfs_root, _ctx, \ + &qla_dfs_##_name##_ops); \ + } while (0) + +#define QLA_DFS_ROOT_REMOVE_FILE(_name) \ + do { \ + if (qla_dfs_##_name) { \ + debugfs_remove(qla_dfs_##_name); \ + qla_dfs_##_name = NULL; \ + } \ + } while (0) + +#define QLA_DFS_CREATE_FILE(_struct, _name, _perm, _parent, _ctx) \ + do { \ + (_struct)->dfs_##_name = debugfs_create_file(#_name, \ + _perm, _parent, _ctx, \ + &qla_dfs_##_name##_ops) \ + } while (0) + +#define QLA_DFS_REMOVE_FILE(_struct, _name) \ + do { \ + if ((_struct)->dfs_##_name) { \ + debugfs_remove((_struct)->dfs_##_name); \ + (_struct)->dfs_##_name = NULL; \ + } \ + } while (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, &qla_dfs_fw_resource_cnt_fops); + + ha->dfs_tgt_counters = debugfs_create_file("tgt_counters", S_IRUSR, + ha->dfs_dir, vha, &qla_dfs_tgt_counters_fops); + + ha->tgt.dfs_tgt_port_database = debugfs_create_file("tgt_port_database", + S_IRUSR, ha->dfs_dir, vha, &qla2x00_dfs_tgt_port_database_fops); + + 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, &qla2x00_dfs_tgt_sess_fops); + + 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); + if (IS_ERR(ha->tgt.dfs_naqp)) { + ql_log(ql_log_warn, vha, 0xd011, + "Unable to create debugFS naqp node.\n"); + goto out; + } + } + vha->dfs_rport_root = debugfs_create_dir("rports", ha->dfs_dir); + if (IS_ERR(vha->dfs_rport_root)) { + ql_log(ql_log_warn, vha, 0xd012, + "Unable to create debugFS rports node.\n"); + goto out; + } +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 (vha->dfs_rport_root) { + debugfs_remove_recursive(vha->dfs_rport_root); + vha->dfs_rport_root = 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; +} |