203 lines
6.9 KiB
C
203 lines
6.9 KiB
C
/******************************************************************************
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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* Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
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* Copyright(c) 2016 - 2017 Intel Deutschland GmbH
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program.
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*
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* The full GNU General Public License is included in this distribution
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* in the file called COPYING.
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*
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* Contact Information:
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* Intel Linux Wireless <linuxwifi@intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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* BSD LICENSE
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*
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* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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* Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
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* Copyright(c) 2016 - 2017 Intel Deutschland GmbH
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*****************************************************************************/
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#include "api/commands.h"
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#include "debugfs.h"
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#include "dbg.h"
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#define FWRT_DEBUGFS_READ_FILE_OPS(name) \
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static ssize_t iwl_dbgfs_##name##_read(struct iwl_fw_runtime *fwrt, \
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char *buf, size_t count, \
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loff_t *ppos); \
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static const struct file_operations iwl_dbgfs_##name##_ops = { \
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.read = iwl_dbgfs_##name##_read, \
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.open = simple_open, \
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.llseek = generic_file_llseek, \
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}
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#define FWRT_DEBUGFS_WRITE_WRAPPER(name, buflen) \
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static ssize_t iwl_dbgfs_##name##_write(struct iwl_fw_runtime *fwrt, \
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char *buf, size_t count, \
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loff_t *ppos); \
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static ssize_t _iwl_dbgfs_##name##_write(struct file *file, \
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const char __user *user_buf, \
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size_t count, loff_t *ppos) \
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{ \
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struct iwl_fw_runtime *fwrt = file->private_data; \
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char buf[buflen] = {}; \
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size_t buf_size = min(count, sizeof(buf) - 1); \
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\
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if (copy_from_user(buf, user_buf, buf_size)) \
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return -EFAULT; \
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\
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return iwl_dbgfs_##name##_write(fwrt, buf, buf_size, ppos); \
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}
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#define FWRT_DEBUGFS_READ_WRITE_FILE_OPS(name, buflen) \
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FWRT_DEBUGFS_WRITE_WRAPPER(name, buflen) \
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static const struct file_operations iwl_dbgfs_##name##_ops = { \
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.write = _iwl_dbgfs_##name##_write, \
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.read = iwl_dbgfs_##name##_read, \
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.open = simple_open, \
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.llseek = generic_file_llseek, \
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}
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#define FWRT_DEBUGFS_WRITE_FILE_OPS(name, buflen) \
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FWRT_DEBUGFS_WRITE_WRAPPER(name, buflen) \
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static const struct file_operations iwl_dbgfs_##name##_ops = { \
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.write = _iwl_dbgfs_##name##_write, \
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.open = simple_open, \
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.llseek = generic_file_llseek, \
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}
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#define FWRT_DEBUGFS_ADD_FILE_ALIAS(alias, name, parent, mode) do { \
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if (!debugfs_create_file(alias, mode, parent, fwrt, \
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&iwl_dbgfs_##name##_ops)) \
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goto err; \
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} while (0)
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#define FWRT_DEBUGFS_ADD_FILE(name, parent, mode) \
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FWRT_DEBUGFS_ADD_FILE_ALIAS(#name, name, parent, mode)
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static int iwl_fw_send_timestamp_marker_cmd(struct iwl_fw_runtime *fwrt)
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{
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struct iwl_mvm_marker marker = {
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.dw_len = sizeof(struct iwl_mvm_marker) / 4,
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.marker_id = MARKER_ID_SYNC_CLOCK,
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/* the real timestamp is taken from the ftrace clock
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* this is for finding the match between fw and kernel logs
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*/
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.timestamp = cpu_to_le64(fwrt->timestamp.seq++),
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};
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struct iwl_host_cmd hcmd = {
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.id = MARKER_CMD,
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.flags = CMD_ASYNC,
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.data[0] = &marker,
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.len[0] = sizeof(marker),
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};
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return iwl_trans_send_cmd(fwrt->trans, &hcmd);
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}
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static void iwl_fw_timestamp_marker_wk(struct work_struct *work)
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{
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int ret;
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struct iwl_fw_runtime *fwrt =
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container_of(work, struct iwl_fw_runtime, timestamp.wk.work);
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unsigned long delay = fwrt->timestamp.delay;
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ret = iwl_fw_send_timestamp_marker_cmd(fwrt);
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if (!ret && delay)
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schedule_delayed_work(&fwrt->timestamp.wk,
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round_jiffies_relative(delay));
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else
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IWL_INFO(fwrt,
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"stopping timestamp_marker, ret: %d, delay: %u\n",
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ret, jiffies_to_msecs(delay) / 1000);
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}
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void iwl_fw_trigger_timestamp(struct iwl_fw_runtime *fwrt, u32 delay)
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{
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IWL_INFO(fwrt,
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"starting timestamp_marker trigger with delay: %us\n",
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delay);
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iwl_fw_cancel_timestamp(fwrt);
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fwrt->timestamp.delay = msecs_to_jiffies(delay * 1000);
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schedule_delayed_work(&fwrt->timestamp.wk,
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round_jiffies_relative(fwrt->timestamp.delay));
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}
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static ssize_t iwl_dbgfs_timestamp_marker_write(struct iwl_fw_runtime *fwrt,
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char *buf, size_t count,
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loff_t *ppos)
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{
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int ret;
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u32 delay;
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ret = kstrtou32(buf, 10, &delay);
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if (ret < 0)
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return ret;
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iwl_fw_trigger_timestamp(fwrt, delay);
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return count;
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}
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FWRT_DEBUGFS_WRITE_FILE_OPS(timestamp_marker, 10);
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int iwl_fwrt_dbgfs_register(struct iwl_fw_runtime *fwrt,
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struct dentry *dbgfs_dir)
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{
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INIT_DELAYED_WORK(&fwrt->timestamp.wk, iwl_fw_timestamp_marker_wk);
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FWRT_DEBUGFS_ADD_FILE(timestamp_marker, dbgfs_dir, 0200);
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return 0;
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err:
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IWL_ERR(fwrt, "Can't create the fwrt debugfs directory\n");
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return -ENOMEM;
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}
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