diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw/debugfs.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/debugfs.c | 297 |
1 files changed, 208 insertions, 89 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/debugfs.c b/drivers/net/wireless/intel/iwlwifi/fw/debugfs.c index 3e120dd47305..3b0e8c43ba4a 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/debugfs.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/debugfs.c @@ -1,69 +1,13 @@ -/****************************************************************************** - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. - * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH - * Copyright(c) 2016 - 2017 Intel Deutschland GmbH - * Copyright (C) 2018 Intel Corporation - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * The full GNU General Public License is included in this distribution - * in the file called COPYING. - * - * Contact Information: - * Intel Linux Wireless <linuxwifi@intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - * BSD LICENSE - * - * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. - * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH - * Copyright(c) 2016 - 2017 Intel Deutschland GmbH - * Copyright (C) 2018 Intel Corporation - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - *****************************************************************************/ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause +/* + * Copyright (C) 2012-2014, 2018-2024 Intel Corporation + * Copyright (C) 2013-2015 Intel Mobile Communications GmbH + * Copyright (C) 2016-2017 Intel Deutschland GmbH + */ #include "api/commands.h" #include "debugfs.h" #include "dbg.h" +#include <linux/seq_file.h> #define FWRT_DEBUGFS_OPEN_WRAPPER(name, buflen, argtype) \ struct dbgfs_##name##_data { \ @@ -173,35 +117,62 @@ static const struct file_operations iwl_dbgfs_##name##_ops = { \ _FWRT_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct iwl_fw_runtime) #define FWRT_DEBUGFS_ADD_FILE_ALIAS(alias, name, parent, mode) do { \ - if (!debugfs_create_file(alias, mode, parent, fwrt, \ - &iwl_dbgfs_##name##_ops)) \ - goto err; \ + debugfs_create_file(alias, mode, parent, fwrt, \ + &iwl_dbgfs_##name##_ops); \ } while (0) #define FWRT_DEBUGFS_ADD_FILE(name, parent, mode) \ FWRT_DEBUGFS_ADD_FILE_ALIAS(#name, name, parent, mode) -static int iwl_fw_send_timestamp_marker_cmd(struct iwl_fw_runtime *fwrt) +static ssize_t iwl_dbgfs_fw_dbg_collect_write(struct iwl_fw_runtime *fwrt, + char *buf, size_t count) { - struct iwl_mvm_marker marker = { - .dw_len = sizeof(struct iwl_mvm_marker) / 4, - .marker_id = MARKER_ID_SYNC_CLOCK, - - /* the real timestamp is taken from the ftrace clock - * this is for finding the match between fw and kernel logs - */ - .timestamp = cpu_to_le64(fwrt->timestamp.seq++), - }; + if (count == 0) + return 0; + + if (!iwl_trans_fw_running(fwrt->trans)) + return count; + + iwl_dbg_tlv_time_point(fwrt, IWL_FW_INI_TIME_POINT_USER_TRIGGER, NULL); + + iwl_fw_dbg_collect(fwrt, FW_DBG_TRIGGER_USER, buf, (count - 1), NULL); + + return count; +} + +FWRT_DEBUGFS_WRITE_FILE_OPS(fw_dbg_collect, 16); +static int iwl_dbgfs_enabled_severities_write(struct iwl_fw_runtime *fwrt, + char *buf, size_t count) +{ + struct iwl_dbg_host_event_cfg_cmd event_cfg; struct iwl_host_cmd hcmd = { - .id = MARKER_CMD, + .id = WIDE_ID(DEBUG_GROUP, HOST_EVENT_CFG), .flags = CMD_ASYNC, - .data[0] = &marker, - .len[0] = sizeof(marker), + .data[0] = &event_cfg, + .len[0] = sizeof(event_cfg), }; + u32 enabled_severities; + int ret = kstrtou32(buf, 10, &enabled_severities); + + if (ret < 0) + return ret; + + event_cfg.enabled_severities = cpu_to_le32(enabled_severities); + + if (fwrt->ops && fwrt->ops->send_hcmd) + ret = fwrt->ops->send_hcmd(fwrt->ops_ctx, &hcmd); + else + ret = -EPERM; + + IWL_INFO(fwrt, + "sent host event cfg with enabled_severities: %u, ret: %d\n", + enabled_severities, ret); - return iwl_trans_send_cmd(fwrt->trans, &hcmd); + return ret ?: count; } +FWRT_DEBUGFS_WRITE_FILE_OPS(enabled_severities, 16); + static void iwl_fw_timestamp_marker_wk(struct work_struct *work) { int ret; @@ -227,7 +198,7 @@ void iwl_fw_trigger_timestamp(struct iwl_fw_runtime *fwrt, u32 delay) iwl_fw_cancel_timestamp(fwrt); - fwrt->timestamp.delay = msecs_to_jiffies(delay * 1000); + fwrt->timestamp.delay = secs_to_jiffies(delay); schedule_delayed_work(&fwrt->timestamp.wk, round_jiffies_relative(fwrt->timestamp.delay)); @@ -262,7 +233,7 @@ struct hcmd_write_data { __be32 cmd_id; __be32 flags; __be16 length; - u8 data[0]; + u8 data[]; } __packed; static ssize_t iwl_dbgfs_send_hcmd_write(struct iwl_fw_runtime *fwrt, char *buf, @@ -277,8 +248,7 @@ static ssize_t iwl_dbgfs_send_hcmd_write(struct iwl_fw_runtime *fwrt, char *buf, .data = { NULL, }, }; - if (fwrt->ops && fwrt->ops->fw_running && - !fwrt->ops->fw_running(fwrt->ops_ctx)) + if (!iwl_trans_fw_running(fwrt->trans)) return -EIO; if (count < header_size + 1 || count > 1024 * 4) @@ -321,14 +291,163 @@ out: FWRT_DEBUGFS_WRITE_FILE_OPS(send_hcmd, 512); -int iwl_fwrt_dbgfs_register(struct iwl_fw_runtime *fwrt, +static ssize_t iwl_dbgfs_fw_dbg_domain_read(struct iwl_fw_runtime *fwrt, + size_t size, char *buf) +{ + return scnprintf(buf, size, "0x%08x\n", + fwrt->trans->dbg.domains_bitmap); +} + +FWRT_DEBUGFS_READ_FILE_OPS(fw_dbg_domain, 20); + +static ssize_t iwl_dbgfs_fw_ver_read(struct iwl_fw_runtime *fwrt, + size_t size, char *buf) +{ + char *pos = buf; + char *endpos = buf + size; + + pos += scnprintf(pos, endpos - pos, "FW id: %s\n", + fwrt->fw->fw_version); + pos += scnprintf(pos, endpos - pos, "FW: %s\n", + fwrt->fw->human_readable); + pos += scnprintf(pos, endpos - pos, "Device: %s\n", + fwrt->trans->info.name); + pos += scnprintf(pos, endpos - pos, "Bus: %s\n", + fwrt->dev->bus->name); + + return pos - buf; +} + +FWRT_DEBUGFS_READ_FILE_OPS(fw_ver, 1024); + +struct iwl_dbgfs_fw_info_priv { + struct iwl_fw_runtime *fwrt; +}; + +struct iwl_dbgfs_fw_info_state { + loff_t pos; +}; + +static void *iwl_dbgfs_fw_info_seq_next(struct seq_file *seq, + void *v, loff_t *pos) +{ + struct iwl_dbgfs_fw_info_state *state = v; + struct iwl_dbgfs_fw_info_priv *priv = seq->private; + const struct iwl_fw *fw = priv->fwrt->fw; + + *pos = ++state->pos; + if (*pos >= fw->ucode_capa.n_cmd_versions) { + kfree(state); + return NULL; + } + + return state; +} + +static void iwl_dbgfs_fw_info_seq_stop(struct seq_file *seq, + void *v) +{ + kfree(v); +} + +static void *iwl_dbgfs_fw_info_seq_start(struct seq_file *seq, loff_t *pos) +{ + struct iwl_dbgfs_fw_info_priv *priv = seq->private; + const struct iwl_fw *fw = priv->fwrt->fw; + struct iwl_dbgfs_fw_info_state *state; + + if (*pos >= fw->ucode_capa.n_cmd_versions) + return NULL; + + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (!state) + return NULL; + state->pos = *pos; + return state; +}; + +static int iwl_dbgfs_fw_info_seq_show(struct seq_file *seq, void *v) +{ + struct iwl_dbgfs_fw_info_state *state = v; + struct iwl_dbgfs_fw_info_priv *priv = seq->private; + const struct iwl_fw *fw = priv->fwrt->fw; + const struct iwl_fw_cmd_version *ver; + u32 cmd_id; + int has_capa; + + if (!state->pos) { + seq_puts(seq, "fw_capa:\n"); + has_capa = fw_has_capa(&fw->ucode_capa, + IWL_UCODE_TLV_CAPA_PPAG_CHINA_BIOS_SUPPORT) ? 1 : 0; + seq_printf(seq, + " %d: %d\n", + IWL_UCODE_TLV_CAPA_PPAG_CHINA_BIOS_SUPPORT, + has_capa); + has_capa = fw_has_capa(&fw->ucode_capa, + IWL_UCODE_TLV_CAPA_CHINA_22_REG_SUPPORT) ? 1 : 0; + seq_printf(seq, + " %d: %d\n", + IWL_UCODE_TLV_CAPA_CHINA_22_REG_SUPPORT, + has_capa); + has_capa = fw_has_capa(&fw->ucode_capa, + IWL_UCODE_TLV_CAPA_FW_ACCEPTS_RAW_DSM_TABLE) ? 1 : 0; + seq_printf(seq, + " %d: %d\n", + IWL_UCODE_TLV_CAPA_FW_ACCEPTS_RAW_DSM_TABLE, + has_capa); + seq_puts(seq, "fw_api_ver:\n"); + } + + ver = &fw->ucode_capa.cmd_versions[state->pos]; + + cmd_id = WIDE_ID(ver->group, ver->cmd); + + seq_printf(seq, " 0x%04x:\n", cmd_id); + seq_printf(seq, " name: %s\n", + iwl_get_cmd_string(priv->fwrt->trans, cmd_id)); + seq_printf(seq, " cmd_ver: %d\n", ver->cmd_ver); + seq_printf(seq, " notif_ver: %d\n", ver->notif_ver); + return 0; +} + +static const struct seq_operations iwl_dbgfs_info_seq_ops = { + .start = iwl_dbgfs_fw_info_seq_start, + .next = iwl_dbgfs_fw_info_seq_next, + .stop = iwl_dbgfs_fw_info_seq_stop, + .show = iwl_dbgfs_fw_info_seq_show, +}; + +static int iwl_dbgfs_fw_info_open(struct inode *inode, struct file *filp) +{ + struct iwl_dbgfs_fw_info_priv *priv; + + priv = __seq_open_private(filp, &iwl_dbgfs_info_seq_ops, + sizeof(*priv)); + + if (!priv) + return -ENOMEM; + + priv->fwrt = inode->i_private; + return 0; +} + +static const struct file_operations iwl_dbgfs_fw_info_ops = { + .owner = THIS_MODULE, + .open = iwl_dbgfs_fw_info_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release_private, +}; + +void iwl_fwrt_dbgfs_register(struct iwl_fw_runtime *fwrt, struct dentry *dbgfs_dir) { INIT_DELAYED_WORK(&fwrt->timestamp.wk, iwl_fw_timestamp_marker_wk); FWRT_DEBUGFS_ADD_FILE(timestamp_marker, dbgfs_dir, 0200); + FWRT_DEBUGFS_ADD_FILE(fw_info, dbgfs_dir, 0200); FWRT_DEBUGFS_ADD_FILE(send_hcmd, dbgfs_dir, 0200); - return 0; -err: - IWL_ERR(fwrt, "Can't create the fwrt debugfs directory\n"); - return -ENOMEM; + FWRT_DEBUGFS_ADD_FILE(enabled_severities, dbgfs_dir, 0200); + FWRT_DEBUGFS_ADD_FILE(fw_dbg_collect, dbgfs_dir, 0200); + FWRT_DEBUGFS_ADD_FILE(fw_dbg_domain, dbgfs_dir, 0400); + FWRT_DEBUGFS_ADD_FILE(fw_ver, dbgfs_dir, 0400); } |