412 lines
11 KiB
C
412 lines
11 KiB
C
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// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
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/*
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* Copyright (C) 2012-2014, 2018-2020 Intel Corporation
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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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#include "api/commands.h"
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#include "debugfs.h"
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#include "dbg.h"
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#include <linux/seq_file.h>
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#define FWRT_DEBUGFS_OPEN_WRAPPER(name, buflen, argtype) \
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struct dbgfs_##name##_data { \
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argtype *arg; \
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bool read_done; \
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ssize_t rlen; \
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char rbuf[buflen]; \
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}; \
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static int _iwl_dbgfs_##name##_open(struct inode *inode, \
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struct file *file) \
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{ \
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struct dbgfs_##name##_data *data; \
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\
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data = kzalloc(sizeof(*data), GFP_KERNEL); \
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if (!data) \
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return -ENOMEM; \
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\
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data->read_done = false; \
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data->arg = inode->i_private; \
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file->private_data = data; \
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\
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return 0; \
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}
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#define FWRT_DEBUGFS_READ_WRAPPER(name) \
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static ssize_t _iwl_dbgfs_##name##_read(struct file *file, \
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char __user *user_buf, \
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size_t count, loff_t *ppos) \
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{ \
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struct dbgfs_##name##_data *data = file->private_data; \
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\
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if (!data->read_done) { \
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data->read_done = true; \
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data->rlen = iwl_dbgfs_##name##_read(data->arg, \
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sizeof(data->rbuf),\
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data->rbuf); \
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} \
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\
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if (data->rlen < 0) \
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return data->rlen; \
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return simple_read_from_buffer(user_buf, count, ppos, \
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data->rbuf, data->rlen); \
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}
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static int _iwl_dbgfs_release(struct inode *inode, struct file *file)
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{
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kfree(file->private_data);
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return 0;
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}
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#define _FWRT_DEBUGFS_READ_FILE_OPS(name, buflen, argtype) \
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FWRT_DEBUGFS_OPEN_WRAPPER(name, buflen, argtype) \
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FWRT_DEBUGFS_READ_WRAPPER(name) \
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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 = _iwl_dbgfs_##name##_open, \
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.llseek = generic_file_llseek, \
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.release = _iwl_dbgfs_release, \
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}
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#define FWRT_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype) \
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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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argtype *arg = \
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((struct dbgfs_##name##_data *)file->private_data)->arg;\
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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(arg, buf, buf_size); \
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}
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#define _FWRT_DEBUGFS_READ_WRITE_FILE_OPS(name, buflen, argtype) \
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FWRT_DEBUGFS_OPEN_WRAPPER(name, buflen, argtype) \
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FWRT_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype) \
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FWRT_DEBUGFS_READ_WRAPPER(name) \
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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 = _iwl_dbgfs_##name##_open, \
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.llseek = generic_file_llseek, \
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.release = _iwl_dbgfs_release, \
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}
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#define _FWRT_DEBUGFS_WRITE_FILE_OPS(name, buflen, argtype) \
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FWRT_DEBUGFS_OPEN_WRAPPER(name, buflen, argtype) \
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FWRT_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype) \
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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 = _iwl_dbgfs_##name##_open, \
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.llseek = generic_file_llseek, \
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.release = _iwl_dbgfs_release, \
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}
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#define FWRT_DEBUGFS_READ_FILE_OPS(name, bufsz) \
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_FWRT_DEBUGFS_READ_FILE_OPS(name, bufsz, struct iwl_fw_runtime)
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#define FWRT_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
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_FWRT_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct iwl_fw_runtime)
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#define FWRT_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
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_FWRT_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct iwl_fw_runtime)
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#define FWRT_DEBUGFS_ADD_FILE_ALIAS(alias, name, parent, mode) do { \
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debugfs_create_file(alias, mode, parent, fwrt, \
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&iwl_dbgfs_##name##_ops); \
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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 int iwl_dbgfs_enabled_severities_write(struct iwl_fw_runtime *fwrt,
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char *buf, size_t count)
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{
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struct iwl_dbg_host_event_cfg_cmd event_cfg;
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struct iwl_host_cmd hcmd = {
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.id = WIDE_ID(DEBUG_GROUP, HOST_EVENT_CFG),
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.flags = CMD_ASYNC,
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.data[0] = &event_cfg,
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.len[0] = sizeof(event_cfg),
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};
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u32 enabled_severities;
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int ret = kstrtou32(buf, 10, &enabled_severities);
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if (ret < 0)
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return ret;
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event_cfg.enabled_severities = cpu_to_le32(enabled_severities);
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ret = iwl_trans_send_cmd(fwrt->trans, &hcmd);
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IWL_INFO(fwrt,
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"sent host event cfg with enabled_severities: %u, ret: %d\n",
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enabled_severities, ret);
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return ret ?: count;
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}
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FWRT_DEBUGFS_WRITE_FILE_OPS(enabled_severities, 16);
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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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{
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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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static ssize_t iwl_dbgfs_timestamp_marker_read(struct iwl_fw_runtime *fwrt,
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size_t size, char *buf)
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{
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u32 delay_secs = jiffies_to_msecs(fwrt->timestamp.delay) / 1000;
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return scnprintf(buf, size, "%d\n", delay_secs);
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}
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FWRT_DEBUGFS_READ_WRITE_FILE_OPS(timestamp_marker, 16);
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struct hcmd_write_data {
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__be32 cmd_id;
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__be32 flags;
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__be16 length;
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u8 data[];
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} __packed;
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static ssize_t iwl_dbgfs_send_hcmd_write(struct iwl_fw_runtime *fwrt, char *buf,
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size_t count)
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{
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size_t header_size = (sizeof(u32) * 2 + sizeof(u16)) * 2;
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size_t data_size = (count - 1) / 2;
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int ret;
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struct hcmd_write_data *data;
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struct iwl_host_cmd hcmd = {
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.len = { 0, },
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.data = { NULL, },
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};
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if (fwrt->ops && fwrt->ops->fw_running &&
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!fwrt->ops->fw_running(fwrt->ops_ctx))
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return -EIO;
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if (count < header_size + 1 || count > 1024 * 4)
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return -EINVAL;
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data = kmalloc(data_size, GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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ret = hex2bin((u8 *)data, buf, data_size);
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if (ret)
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goto out;
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hcmd.id = be32_to_cpu(data->cmd_id);
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hcmd.flags = be32_to_cpu(data->flags);
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hcmd.len[0] = be16_to_cpu(data->length);
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hcmd.data[0] = data->data;
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if (count != header_size + hcmd.len[0] * 2 + 1) {
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IWL_ERR(fwrt,
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"host command data size does not match header length\n");
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ret = -EINVAL;
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goto out;
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}
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if (fwrt->ops && fwrt->ops->send_hcmd)
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ret = fwrt->ops->send_hcmd(fwrt->ops_ctx, &hcmd);
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else
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ret = -EPERM;
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if (ret < 0)
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goto out;
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if (hcmd.flags & CMD_WANT_SKB)
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iwl_free_resp(&hcmd);
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out:
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kfree(data);
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return ret ?: count;
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}
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FWRT_DEBUGFS_WRITE_FILE_OPS(send_hcmd, 512);
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static ssize_t iwl_dbgfs_fw_dbg_domain_read(struct iwl_fw_runtime *fwrt,
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size_t size, char *buf)
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{
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return scnprintf(buf, size, "0x%08x\n",
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fwrt->trans->dbg.domains_bitmap);
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}
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FWRT_DEBUGFS_READ_FILE_OPS(fw_dbg_domain, 20);
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struct iwl_dbgfs_fw_info_priv {
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struct iwl_fw_runtime *fwrt;
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};
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struct iwl_dbgfs_fw_info_state {
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loff_t pos;
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};
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static void *iwl_dbgfs_fw_info_seq_next(struct seq_file *seq,
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void *v, loff_t *pos)
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{
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struct iwl_dbgfs_fw_info_state *state = v;
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struct iwl_dbgfs_fw_info_priv *priv = seq->private;
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const struct iwl_fw *fw = priv->fwrt->fw;
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*pos = ++state->pos;
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if (*pos >= fw->ucode_capa.n_cmd_versions) {
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kfree(state);
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return NULL;
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}
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return state;
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}
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static void iwl_dbgfs_fw_info_seq_stop(struct seq_file *seq,
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void *v)
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{
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kfree(v);
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}
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static void *iwl_dbgfs_fw_info_seq_start(struct seq_file *seq, loff_t *pos)
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{
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struct iwl_dbgfs_fw_info_priv *priv = seq->private;
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const struct iwl_fw *fw = priv->fwrt->fw;
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struct iwl_dbgfs_fw_info_state *state;
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if (*pos >= fw->ucode_capa.n_cmd_versions)
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return NULL;
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state = kzalloc(sizeof(*state), GFP_KERNEL);
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if (!state)
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return NULL;
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state->pos = *pos;
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return state;
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};
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static int iwl_dbgfs_fw_info_seq_show(struct seq_file *seq, void *v)
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{
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struct iwl_dbgfs_fw_info_state *state = v;
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struct iwl_dbgfs_fw_info_priv *priv = seq->private;
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|
|
const struct iwl_fw *fw = priv->fwrt->fw;
|
||
|
|
const struct iwl_fw_cmd_version *ver;
|
||
|
|
u32 cmd_id;
|
||
|
|
|
||
|
|
if (!state->pos)
|
||
|
|
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);
|
||
|
|
FWRT_DEBUGFS_ADD_FILE(enabled_severities, dbgfs_dir, 0200);
|
||
|
|
FWRT_DEBUGFS_ADD_FILE(fw_dbg_domain, dbgfs_dir, 0400);
|
||
|
|
}
|