mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
Bluetooth: btmrvl add firmware dump support
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>
This commit is contained in:
Xinming Hu
Marcel Holtmann
parent
7365d475bf
commit
dc759613b0
6 changed files with 364 additions and 0 deletions
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@ -210,6 +210,7 @@ config BT_MRVL_SDIO
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tristate "Marvell BT-over-SDIO driver"
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depends on BT_MRVL && MMC
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select FW_LOADER
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select WANT_DEV_COREDUMP
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help
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The driver for Marvell Bluetooth chipsets with SDIO interface.
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@ -167,6 +167,35 @@ static const struct file_operations btmrvl_hscmd_fops = {
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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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@ -197,6 +226,8 @@ void btmrvl_debugfs_init(struct hci_dev *hdev)
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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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@ -32,6 +32,24 @@
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/* Time to wait for command response in millisecond */
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#define WAIT_UNTIL_CMD_RESP 5000
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enum rdwr_status {
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RDWR_STATUS_SUCCESS = 0,
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RDWR_STATUS_FAILURE = 1,
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RDWR_STATUS_DONE = 2
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};
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#define FW_DUMP_MAX_NAME_LEN 8
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#define FW_DUMP_HOST_READY 0xEE
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#define FW_DUMP_DONE 0xFF
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#define FW_DUMP_READ_DONE 0xFE
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struct memory_type_mapping {
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u8 mem_name[FW_DUMP_MAX_NAME_LEN];
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u8 *mem_ptr;
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u32 mem_size;
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u8 done_flag;
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};
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struct btmrvl_thread {
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struct task_struct *task;
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wait_queue_head_t wait_q;
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@ -81,6 +99,7 @@ struct btmrvl_private {
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u8 *payload, u16 nb);
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int (*hw_wakeup_firmware) (struct btmrvl_private *priv);
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int (*hw_process_int_status) (struct btmrvl_private *priv);
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void (*firmware_dump)(struct btmrvl_private *priv);
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spinlock_t driver_lock; /* spinlock used by driver */
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#ifdef CONFIG_DEBUG_FS
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void *debugfs_data;
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@ -151,6 +170,7 @@ int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv);
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int btmrvl_enable_ps(struct btmrvl_private *priv);
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int btmrvl_prepare_command(struct btmrvl_private *priv);
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int btmrvl_enable_hs(struct btmrvl_private *priv);
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void btmrvl_firmware_dump(struct btmrvl_private *priv);
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#ifdef CONFIG_DEBUG_FS
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void btmrvl_debugfs_init(struct hci_dev *hdev);
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@ -22,6 +22,7 @@
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#include <linux/of.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 <linux/mmc/sdio_func.h>
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#include "btmrvl_drv.h"
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#include "btmrvl_sdio.h"
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@ -335,6 +336,12 @@ int btmrvl_prepare_command(struct btmrvl_private *priv)
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return ret;
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}
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void btmrvl_firmware_dump(struct btmrvl_private *priv)
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{
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if (priv->firmware_dump)
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priv->firmware_dump(priv);
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}
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static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
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{
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int ret = 0;
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@ -24,6 +24,7 @@
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#include <linux/mmc/sdio_ids.h>
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#include <linux/mmc/sdio_func.h>
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#include <linux/module.h>
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#include <linux/devcoredump.h>
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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@ -33,6 +34,24 @@
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#define VERSION "1.0"
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static struct memory_type_mapping mem_type_mapping_tbl[] = {
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{"ITCM", NULL, 0, 0xF0},
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{"DTCM", NULL, 0, 0xF1},
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{"SQRAM", NULL, 0, 0xF2},
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{"APU", NULL, 0, 0xF3},
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{"CIU", NULL, 0, 0xF4},
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{"ICU", NULL, 0, 0xF5},
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{"MAC", NULL, 0, 0xF6},
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{"EXT7", NULL, 0, 0xF7},
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{"EXT8", NULL, 0, 0xF8},
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{"EXT9", NULL, 0, 0xF9},
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{"EXT10", NULL, 0, 0xFA},
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{"EXT11", NULL, 0, 0xFB},
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{"EXT12", NULL, 0, 0xFC},
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{"EXT13", NULL, 0, 0xFD},
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{"EXTLAST", NULL, 0, 0xFE},
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};
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/* The btmrvl_sdio_remove() callback function is called
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* when user removes this module from kernel space or ejects
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* the card from the slot. The driver handles these 2 cases
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@ -122,6 +141,9 @@ static const struct btmrvl_sdio_card_reg btmrvl_reg_8897 = {
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.int_read_to_clear = true,
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.host_int_rsr = 0x01,
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.card_misc_cfg = 0xcc,
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.fw_dump_ctrl = 0xe2,
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.fw_dump_start = 0xe3,
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.fw_dump_end = 0xea,
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};
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static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
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@ -130,6 +152,7 @@ static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
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.reg = &btmrvl_reg_8688,
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.support_pscan_win_report = false,
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.sd_blksz_fw_dl = 64,
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.supports_fw_dump = false,
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};
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static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
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@ -138,6 +161,7 @@ static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
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.reg = &btmrvl_reg_87xx,
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.support_pscan_win_report = false,
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.sd_blksz_fw_dl = 256,
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.supports_fw_dump = false,
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};
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static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
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@ -146,6 +170,7 @@ static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
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.reg = &btmrvl_reg_87xx,
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.support_pscan_win_report = false,
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.sd_blksz_fw_dl = 256,
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.supports_fw_dump = false,
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};
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static const struct btmrvl_sdio_device btmrvl_sdio_sd8887 = {
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@ -154,6 +179,7 @@ static const struct btmrvl_sdio_device btmrvl_sdio_sd8887 = {
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.reg = &btmrvl_reg_8887,
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.support_pscan_win_report = true,
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.sd_blksz_fw_dl = 256,
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.supports_fw_dump = false,
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};
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static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = {
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@ -162,6 +188,7 @@ static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = {
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.reg = &btmrvl_reg_8897,
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.support_pscan_win_report = true,
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.sd_blksz_fw_dl = 256,
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.supports_fw_dump = true,
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};
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static const struct sdio_device_id btmrvl_sdio_ids[] = {
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@ -1080,6 +1107,277 @@ static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
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return ret;
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}
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static void btmrvl_sdio_dump_regs(struct btmrvl_private *priv)
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{
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struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
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int ret = 0;
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unsigned int reg, reg_start, reg_end;
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char buf[256], *ptr;
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u8 loop, func, data;
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int MAX_LOOP = 2;
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btmrvl_sdio_wakeup_fw(priv);
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sdio_claim_host(card->func);
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for (loop = 0; loop < MAX_LOOP; loop++) {
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memset(buf, 0, sizeof(buf));
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ptr = buf;
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if (loop == 0) {
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/* Read the registers of SDIO function0 */
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func = loop;
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reg_start = 0;
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reg_end = 9;
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} else {
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func = 2;
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reg_start = 0;
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reg_end = 0x09;
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}
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ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
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func, reg_start, reg_end);
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for (reg = reg_start; reg <= reg_end; reg++) {
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if (func == 0)
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data = sdio_f0_readb(card->func, reg, &ret);
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else
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data = sdio_readb(card->func, reg, &ret);
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if (!ret) {
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ptr += sprintf(ptr, "%02x ", data);
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} else {
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ptr += sprintf(ptr, "ERR");
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break;
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}
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}
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BT_INFO("%s", buf);
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}
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sdio_release_host(card->func);
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}
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/* This function read/write firmware */
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static enum
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rdwr_status btmrvl_sdio_rdwr_firmware(struct btmrvl_private *priv,
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u8 doneflag)
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{
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struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
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int ret, tries;
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u8 ctrl_data = 0;
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sdio_writeb(card->func, FW_DUMP_HOST_READY, card->reg->fw_dump_ctrl,
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&ret);
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if (ret) {
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BT_ERR("SDIO write err");
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return RDWR_STATUS_FAILURE;
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}
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for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
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ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
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&ret);
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if (ret) {
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BT_ERR("SDIO read err");
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return RDWR_STATUS_FAILURE;
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}
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if (ctrl_data == FW_DUMP_DONE)
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break;
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if (doneflag && ctrl_data == doneflag)
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return RDWR_STATUS_DONE;
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if (ctrl_data != FW_DUMP_HOST_READY) {
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BT_INFO("The ctrl reg was changed, re-try again!");
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sdio_writeb(card->func, FW_DUMP_HOST_READY,
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card->reg->fw_dump_ctrl, &ret);
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if (ret) {
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BT_ERR("SDIO write err");
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return RDWR_STATUS_FAILURE;
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}
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}
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usleep_range(100, 200);
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}
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if (ctrl_data == FW_DUMP_HOST_READY) {
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BT_ERR("Fail to pull ctrl_data");
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return RDWR_STATUS_FAILURE;
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}
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return RDWR_STATUS_SUCCESS;
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}
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/* This function dump sdio register and memory data */
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static void btmrvl_sdio_dump_firmware(struct btmrvl_private *priv)
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{
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struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
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int ret = 0;
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unsigned int reg, reg_start, reg_end;
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enum rdwr_status stat;
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u8 *dbg_ptr, *end_ptr, *fw_dump_data, *fw_dump_ptr;
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u8 dump_num, idx, i, read_reg, doneflag = 0;
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u32 memory_size, fw_dump_len = 0;
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/* dump sdio register first */
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btmrvl_sdio_dump_regs(priv);
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if (!card->supports_fw_dump) {
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BT_ERR("Firmware dump not supported for this card!");
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return;
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}
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for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
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struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
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if (entry->mem_ptr) {
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vfree(entry->mem_ptr);
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entry->mem_ptr = NULL;
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}
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entry->mem_size = 0;
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}
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btmrvl_sdio_wakeup_fw(priv);
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sdio_claim_host(card->func);
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BT_INFO("== btmrvl firmware dump start ==");
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stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
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if (stat == RDWR_STATUS_FAILURE)
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goto done;
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reg = card->reg->fw_dump_start;
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/* Read the number of the memories which will dump */
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dump_num = sdio_readb(card->func, reg, &ret);
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if (ret) {
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BT_ERR("SDIO read memory length err");
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goto done;
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}
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/* Read the length of every memory which will dump */
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for (idx = 0; idx < dump_num; idx++) {
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struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
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stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
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if (stat == RDWR_STATUS_FAILURE)
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goto done;
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memory_size = 0;
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reg = card->reg->fw_dump_start;
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for (i = 0; i < 4; i++) {
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read_reg = sdio_readb(card->func, reg, &ret);
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if (ret) {
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BT_ERR("SDIO read err");
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goto done;
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}
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memory_size |= (read_reg << i*8);
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reg++;
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}
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if (memory_size == 0) {
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BT_INFO("Firmware dump finished!");
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break;
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}
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BT_INFO("%s_SIZE=0x%x", entry->mem_name, memory_size);
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entry->mem_ptr = vzalloc(memory_size + 1);
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entry->mem_size = memory_size;
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if (!entry->mem_ptr) {
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BT_ERR("Vzalloc %s failed", entry->mem_name);
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goto done;
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}
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fw_dump_len += (strlen("========Start dump ") +
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strlen(entry->mem_name) +
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strlen("========\n") +
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(memory_size + 1) +
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strlen("\n========End dump========\n"));
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dbg_ptr = entry->mem_ptr;
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end_ptr = dbg_ptr + memory_size;
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doneflag = entry->done_flag;
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BT_INFO("Start %s output, please wait...",
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entry->mem_name);
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do {
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stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
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if (stat == RDWR_STATUS_FAILURE)
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goto done;
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reg_start = card->reg->fw_dump_start;
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reg_end = card->reg->fw_dump_end;
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for (reg = reg_start; reg <= reg_end; reg++) {
|
||||
*dbg_ptr = sdio_readb(card->func, reg, &ret);
|
||||
if (ret) {
|
||||
BT_ERR("SDIO read err");
|
||||
goto done;
|
||||
}
|
||||
if (dbg_ptr < end_ptr)
|
||||
dbg_ptr++;
|
||||
else
|
||||
BT_ERR("Allocated buffer not enough");
|
||||
}
|
||||
|
||||
if (stat != RDWR_STATUS_DONE) {
|
||||
continue;
|
||||
} else {
|
||||
BT_INFO("%s done: size=0x%tx",
|
||||
entry->mem_name,
|
||||
dbg_ptr - entry->mem_ptr);
|
||||
break;
|
||||
}
|
||||
} while (1);
|
||||
}
|
||||
|
||||
BT_INFO("== btmrvl firmware dump end ==");
|
||||
|
||||
done:
|
||||
sdio_release_host(card->func);
|
||||
|
||||
if (fw_dump_len == 0)
|
||||
return;
|
||||
|
||||
fw_dump_data = vzalloc(fw_dump_len+1);
|
||||
if (!fw_dump_data) {
|
||||
BT_ERR("Vzalloc fw_dump_data fail!");
|
||||
return;
|
||||
}
|
||||
fw_dump_ptr = fw_dump_data;
|
||||
|
||||
/* Dump all the memory data into single file, a userspace script will
|
||||
be used to split all the memory data to multiple files*/
|
||||
BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump start");
|
||||
for (idx = 0; idx < dump_num; idx++) {
|
||||
struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
|
||||
|
||||
if (entry->mem_ptr) {
|
||||
strcpy(fw_dump_ptr, "========Start dump ");
|
||||
fw_dump_ptr += strlen("========Start dump ");
|
||||
|
||||
strcpy(fw_dump_ptr, entry->mem_name);
|
||||
fw_dump_ptr += strlen(entry->mem_name);
|
||||
|
||||
strcpy(fw_dump_ptr, "========\n");
|
||||
fw_dump_ptr += strlen("========\n");
|
||||
|
||||
memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
|
||||
fw_dump_ptr += entry->mem_size;
|
||||
|
||||
strcpy(fw_dump_ptr, "\n========End dump========\n");
|
||||
fw_dump_ptr += strlen("\n========End dump========\n");
|
||||
|
||||
vfree(mem_type_mapping_tbl[idx].mem_ptr);
|
||||
mem_type_mapping_tbl[idx].mem_ptr = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
/* fw_dump_data will be free in device coredump release function
|
||||
after 5 min*/
|
||||
dev_coredumpv(&priv->btmrvl_dev.hcidev->dev, fw_dump_data,
|
||||
fw_dump_len, GFP_KERNEL);
|
||||
BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump end");
|
||||
}
|
||||
|
||||
static int btmrvl_sdio_probe(struct sdio_func *func,
|
||||
const struct sdio_device_id *id)
|
||||
{
|
||||
|
|
@ -1103,6 +1401,7 @@ static int btmrvl_sdio_probe(struct sdio_func *func,
|
|||
card->reg = data->reg;
|
||||
card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
|
||||
card->support_pscan_win_report = data->support_pscan_win_report;
|
||||
card->supports_fw_dump = data->supports_fw_dump;
|
||||
}
|
||||
|
||||
if (btmrvl_sdio_register_dev(card) < 0) {
|
||||
|
|
@ -1134,6 +1433,7 @@ static int btmrvl_sdio_probe(struct sdio_func *func,
|
|||
priv->hw_host_to_card = btmrvl_sdio_host_to_card;
|
||||
priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
|
||||
priv->hw_process_int_status = btmrvl_sdio_process_int_status;
|
||||
priv->firmware_dump = btmrvl_sdio_dump_firmware;
|
||||
|
||||
if (btmrvl_register_hdev(priv)) {
|
||||
BT_ERR("Register hdev failed!");
|
||||
|
|
|
|||
|
|
@ -81,6 +81,9 @@ struct btmrvl_sdio_card_reg {
|
|||
bool int_read_to_clear;
|
||||
u8 host_int_rsr;
|
||||
u8 card_misc_cfg;
|
||||
u8 fw_dump_ctrl;
|
||||
u8 fw_dump_start;
|
||||
u8 fw_dump_end;
|
||||
};
|
||||
|
||||
struct btmrvl_sdio_card {
|
||||
|
|
@ -90,6 +93,7 @@ struct btmrvl_sdio_card {
|
|||
const char *firmware;
|
||||
const struct btmrvl_sdio_card_reg *reg;
|
||||
bool support_pscan_win_report;
|
||||
bool supports_fw_dump;
|
||||
u16 sd_blksz_fw_dl;
|
||||
u8 rx_unit;
|
||||
struct btmrvl_private *priv;
|
||||
|
|
@ -101,6 +105,7 @@ struct btmrvl_sdio_device {
|
|||
const struct btmrvl_sdio_card_reg *reg;
|
||||
const bool support_pscan_win_report;
|
||||
u16 sd_blksz_fw_dl;
|
||||
bool supports_fw_dump;
|
||||
};
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue