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![Xinming Hu](/assets/img/avatar_default.png)
This patch adds firmware dump support for marvell bluetooth chipset. Currently only SD8897 is supported. This is implemented based on dev_coredump, a new mechnism introduced in kernel 3.18rc3 Firmware dump can be trigger by echo 1 > /sys/kernel/debug/bluetooth/hci*/config/fw_dump and when the dump operation is completed, data can be read by cat /sys/class/devcoredump/devcd*/data We have prepared following script to divide fw memory dump data into multiple files based on memory type. [root]# cat btmrvl_split_dump_data.sh #!/bin/bash # usage: ./btmrvl_split_dump_data.sh dump_data fw_dump_data=$1 mem_type="ITCM DTCM SQRAM APU CIU ICU MAC EXT7 EXT8 EXT9 EXT10 EXT11 EXT12 EXT13 EXTLAST" for name in ${mem_type[@]} do sed -n "/Start dump $name/,/End dump/p" $fw_dump_data > tmp.$name.log if [ ! -s tmp.$name.log ] then rm -rf tmp.$name.log else # Remove the describle info "Start dump" and "End dump" sed '1d' tmp.$name.log | sed '$d' > /data/$name.log if [ -s /data/$name.log ] then echo "generate /data/$name.log" else sed '1d' tmp.$name.log | sed '$d' > /var/$name.log echo "generate /var/$name.log" fi rm -rf tmp.$name.log fi done Signed-off-by: Xinming Hu <huxm@marvell.com> Signed-off-by: Cathy Luo <cluo@marvell.com> Signed-off-by: Avinash Patil <patila@marvell.com> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Reviewed-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
255 lines
6.5 KiB
C
255 lines
6.5 KiB
C
/**
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* Marvell Bluetooth driver: debugfs related functions
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*
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* Copyright (C) 2009, Marvell International Ltd.
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*
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* This software file (the "File") is distributed by Marvell International
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* Ltd. under the terms of the GNU General Public License Version 2, June 1991
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* (the "License"). You may use, redistribute and/or modify this File in
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* accordance with the terms and conditions of the License, a copy of which
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* is available by writing to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
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* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
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*
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*
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* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
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* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
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* this warranty disclaimer.
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**/
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#include <linux/debugfs.h>
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#include <linux/slab.h>
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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#include "btmrvl_drv.h"
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struct btmrvl_debugfs_data {
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struct dentry *config_dir;
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struct dentry *status_dir;
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};
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static ssize_t btmrvl_hscfgcmd_write(struct file *file,
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const char __user *ubuf, size_t count, loff_t *ppos)
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{
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struct btmrvl_private *priv = file->private_data;
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char buf[16];
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long result, ret;
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memset(buf, 0, sizeof(buf));
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if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
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return -EFAULT;
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ret = kstrtol(buf, 10, &result);
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if (ret)
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return ret;
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priv->btmrvl_dev.hscfgcmd = result;
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if (priv->btmrvl_dev.hscfgcmd) {
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btmrvl_prepare_command(priv);
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wake_up_interruptible(&priv->main_thread.wait_q);
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}
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return count;
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}
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static ssize_t btmrvl_hscfgcmd_read(struct file *file, char __user *userbuf,
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size_t count, loff_t *ppos)
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{
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struct btmrvl_private *priv = file->private_data;
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char buf[16];
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int ret;
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ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
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priv->btmrvl_dev.hscfgcmd);
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return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
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}
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static const struct file_operations btmrvl_hscfgcmd_fops = {
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.read = btmrvl_hscfgcmd_read,
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.write = btmrvl_hscfgcmd_write,
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.open = simple_open,
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.llseek = default_llseek,
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};
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static ssize_t btmrvl_pscmd_write(struct file *file, const char __user *ubuf,
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size_t count, loff_t *ppos)
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{
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struct btmrvl_private *priv = file->private_data;
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char buf[16];
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long result, ret;
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memset(buf, 0, sizeof(buf));
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if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
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return -EFAULT;
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ret = kstrtol(buf, 10, &result);
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if (ret)
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return ret;
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priv->btmrvl_dev.pscmd = result;
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if (priv->btmrvl_dev.pscmd) {
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btmrvl_prepare_command(priv);
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wake_up_interruptible(&priv->main_thread.wait_q);
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}
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return count;
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}
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static ssize_t btmrvl_pscmd_read(struct file *file, char __user *userbuf,
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size_t count, loff_t *ppos)
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{
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struct btmrvl_private *priv = file->private_data;
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char buf[16];
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int ret;
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ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.pscmd);
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return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
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}
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static const struct file_operations btmrvl_pscmd_fops = {
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.read = btmrvl_pscmd_read,
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.write = btmrvl_pscmd_write,
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.open = simple_open,
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.llseek = default_llseek,
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};
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static ssize_t btmrvl_hscmd_write(struct file *file, const char __user *ubuf,
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size_t count, loff_t *ppos)
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{
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struct btmrvl_private *priv = file->private_data;
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char buf[16];
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long result, ret;
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memset(buf, 0, sizeof(buf));
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if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
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return -EFAULT;
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ret = kstrtol(buf, 10, &result);
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if (ret)
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return ret;
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priv->btmrvl_dev.hscmd = result;
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if (priv->btmrvl_dev.hscmd) {
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btmrvl_prepare_command(priv);
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wake_up_interruptible(&priv->main_thread.wait_q);
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}
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return count;
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}
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static ssize_t btmrvl_hscmd_read(struct file *file, char __user *userbuf,
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size_t count, loff_t *ppos)
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{
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struct btmrvl_private *priv = file->private_data;
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char buf[16];
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int ret;
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ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hscmd);
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return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
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}
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static const struct file_operations btmrvl_hscmd_fops = {
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.read = btmrvl_hscmd_read,
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.write = btmrvl_hscmd_write,
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.open = simple_open,
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.llseek = default_llseek,
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};
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static ssize_t btmrvl_fwdump_write(struct file *file, const char __user *ubuf,
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size_t count, loff_t *ppos)
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{
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struct btmrvl_private *priv = file->private_data;
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char buf[16];
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bool result;
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memset(buf, 0, sizeof(buf));
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if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
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return -EFAULT;
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if (strtobool(buf, &result))
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return -EINVAL;
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if (!result)
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return -EINVAL;
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btmrvl_firmware_dump(priv);
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return count;
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}
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static const struct file_operations btmrvl_fwdump_fops = {
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.write = btmrvl_fwdump_write,
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.open = simple_open,
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.llseek = default_llseek,
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};
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void btmrvl_debugfs_init(struct hci_dev *hdev)
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{
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struct btmrvl_private *priv = hci_get_drvdata(hdev);
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struct btmrvl_debugfs_data *dbg;
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if (!hdev->debugfs)
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return;
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dbg = kzalloc(sizeof(*dbg), GFP_KERNEL);
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priv->debugfs_data = dbg;
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if (!dbg) {
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BT_ERR("Can not allocate memory for btmrvl_debugfs_data.");
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return;
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}
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dbg->config_dir = debugfs_create_dir("config", hdev->debugfs);
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debugfs_create_u8("psmode", 0644, dbg->config_dir,
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&priv->btmrvl_dev.psmode);
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debugfs_create_file("pscmd", 0644, dbg->config_dir,
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priv, &btmrvl_pscmd_fops);
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debugfs_create_x16("gpiogap", 0644, dbg->config_dir,
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&priv->btmrvl_dev.gpio_gap);
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debugfs_create_u8("hsmode", 0644, dbg->config_dir,
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&priv->btmrvl_dev.hsmode);
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debugfs_create_file("hscmd", 0644, dbg->config_dir,
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priv, &btmrvl_hscmd_fops);
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debugfs_create_file("hscfgcmd", 0644, dbg->config_dir,
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priv, &btmrvl_hscfgcmd_fops);
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debugfs_create_file("fw_dump", 0200, dbg->config_dir,
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priv, &btmrvl_fwdump_fops);
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dbg->status_dir = debugfs_create_dir("status", hdev->debugfs);
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debugfs_create_u8("curpsmode", 0444, dbg->status_dir,
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&priv->adapter->psmode);
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debugfs_create_u8("psstate", 0444, dbg->status_dir,
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&priv->adapter->ps_state);
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debugfs_create_u8("hsstate", 0444, dbg->status_dir,
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&priv->adapter->hs_state);
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debugfs_create_u8("txdnldready", 0444, dbg->status_dir,
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&priv->btmrvl_dev.tx_dnld_rdy);
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}
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void btmrvl_debugfs_remove(struct hci_dev *hdev)
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{
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struct btmrvl_private *priv = hci_get_drvdata(hdev);
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struct btmrvl_debugfs_data *dbg = priv->debugfs_data;
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if (!dbg)
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return;
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debugfs_remove_recursive(dbg->config_dir);
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debugfs_remove_recursive(dbg->status_dir);
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kfree(dbg);
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}
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