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Bluetooth: btmrvl: support sysfs initiated firmware coredump 

Since commit 3c47d19ff4 ("drivers: base: add coredump driver ops")
it is possible to initiate a device coredump from user-space. This
patch adds support for it in btmrvl_sdio adding the .coredump()
driver callback. This makes dump through debugfs obsolete so removing
it.

Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Arend van Spriel 2018-05-18 00:15:12 +02:00 committed by Marcel Holtmann
parent 803cdb8ce5
commit 45650499ee
4 changed files with 8 additions and 42 deletions
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31
drivers/bluetooth/btmrvl_debugfs.c
View File

@ -167,35 +167,6 @@ static const struct file_operations btmrvl_hscmd_fops = {
.llseek = default_llseek,
};
static ssize_t btmrvl_fwdump_write(struct file *file, const char __user *ubuf,
size_t count, loff_t *ppos)
{
struct btmrvl_private *priv = file->private_data;
char buf[16];
bool result;
memset(buf, 0, sizeof(buf));
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
return -EFAULT;
if (strtobool(buf, &result))
return -EINVAL;
if (!result)
return -EINVAL;
btmrvl_firmware_dump(priv);
return count;
}
static const struct file_operations btmrvl_fwdump_fops = {
.write = btmrvl_fwdump_write,
.open = simple_open,
.llseek = default_llseek,
};
void btmrvl_debugfs_init(struct hci_dev *hdev)
{
struct btmrvl_private *priv = hci_get_drvdata(hdev);
@ -226,8 +197,6 @@ void btmrvl_debugfs_init(struct hci_dev *hdev)
priv, &btmrvl_hscmd_fops);
debugfs_create_file("hscfgcmd", 0644, dbg->config_dir,
priv, &btmrvl_hscfgcmd_fops);
debugfs_create_file("fw_dump", 0200, dbg->config_dir,
priv, &btmrvl_fwdump_fops);
dbg->status_dir = debugfs_create_dir("status", hdev->debugfs);
debugfs_create_u8("curpsmode", 0444, dbg->status_dir,

2
drivers/bluetooth/btmrvl_drv.h
View File

@ -110,7 +110,6 @@ struct btmrvl_private {
u8 *payload, u16 nb);
int (*hw_wakeup_firmware)(struct btmrvl_private *priv);
int (*hw_process_int_status)(struct btmrvl_private *priv);
void (*firmware_dump)(struct btmrvl_private *priv);
spinlock_t driver_lock; /* spinlock used by driver */
#ifdef CONFIG_DEBUG_FS
void *debugfs_data;
@ -183,7 +182,6 @@ int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv);
int btmrvl_enable_ps(struct btmrvl_private *priv);
int btmrvl_prepare_command(struct btmrvl_private *priv);
int btmrvl_enable_hs(struct btmrvl_private *priv);
void btmrvl_firmware_dump(struct btmrvl_private *priv);
#ifdef CONFIG_DEBUG_FS
void btmrvl_debugfs_init(struct hci_dev *hdev);

6
drivers/bluetooth/btmrvl_main.c
View File

@ -358,12 +358,6 @@ int btmrvl_prepare_command(struct btmrvl_private *priv)
return ret;
}
void btmrvl_firmware_dump(struct btmrvl_private *priv)
{
if (priv->firmware_dump)
priv->firmware_dump(priv);
}
static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
{
int ret = 0;

11
drivers/bluetooth/btmrvl_sdio.c
View File

@ -1311,9 +1311,11 @@ rdwr_status btmrvl_sdio_rdwr_firmware(struct btmrvl_private *priv,
}
/* This function dump sdio register and memory data */
static void btmrvl_sdio_dump_firmware(struct btmrvl_private *priv)
static void btmrvl_sdio_coredump(struct device *dev)
{
struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
struct sdio_func *func = dev_to_sdio_func(dev);
struct btmrvl_sdio_card *card;
struct btmrvl_private *priv;
int ret = 0;
unsigned int reg, reg_start, reg_end;
enum rdwr_status stat;
@ -1321,6 +1323,9 @@ static void btmrvl_sdio_dump_firmware(struct btmrvl_private *priv)
u8 dump_num = 0, idx, i, read_reg, doneflag = 0;
u32 memory_size, fw_dump_len = 0;
card = sdio_get_drvdata(func);
priv = card->priv;
/* dump sdio register first */
btmrvl_sdio_dump_regs(priv);
@ -1547,7 +1552,6 @@ 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!");
@ -1717,6 +1721,7 @@ static struct sdio_driver bt_mrvl_sdio = {
.remove = btmrvl_sdio_remove,
.drv = {
.owner = THIS_MODULE,
.coredump = btmrvl_sdio_coredump,
.pm = &btmrvl_sdio_pm_ops,
}
};