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| author | Jing Cai <jing.cai@mediatek.com> | 2023-06-29 06:54:57 +0800 |
|---|---|---|
| committer | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2023-08-11 11:41:56 -0700 |
| commit | 0b70151328781a89c89e4cf3fae21fc0e98d869e (patch) | |
| tree | bfb34faf1fd8e0ef1e1ed1dc70880a10c5cb86d0 /drivers/bluetooth/btusb.c | |
| parent | 25b6d7593a3af75a00374c9afe548a72794e5af0 (diff) | |
| download | linux-stable-0b70151328781a89c89e4cf3fae21fc0e98d869e.tar.gz linux-stable-0b70151328781a89c89e4cf3fae21fc0e98d869e.tar.bz2 linux-stable-0b70151328781a89c89e4cf3fae21fc0e98d869e.zip | |
Bluetooth: btusb: mediatek: add MediaTek devcoredump support
This patch implement function .coredump() and dmp_hdr() in btusb
driver for MediaTek controller. FW core dump was triggered by FW
specific event to show something unexpected happened in the controller.
The driver would be responsible for collecting and uploading the device
core dump pieces in hci driver using core dump API. Once we finished
the whole process, the driver would reset the controller to recover the
kind of fatal error.
Co-developed-by: Chris Lu <chris.lu@mediatek.com>
Signed-off-by: Chris Lu <chris.lu@mediatek.com>
Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Jing Cai <jing.cai@mediatek.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Diffstat (limited to 'drivers/bluetooth/btusb.c')
| -rw-r--r-- | drivers/bluetooth/btusb.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 2d3e2cb7963f..2bd819bf6d10 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -3153,6 +3153,10 @@ static int btusb_mtk_setup(struct hci_dev *hdev) mediatek->dev_id = dev_id; mediatek->reset_sync = btusb_mtk_reset; + err = btmtk_register_coredump(hdev, btusb_driver.name, fw_version); + if (err < 0) + bt_dev_err(hdev, "Failed to register coredump (%d)", err); + switch (dev_id) { case 0x7663: fwname = FIRMWARE_MT7663; @@ -3313,6 +3317,7 @@ static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb) { struct btusb_data *data = hci_get_drvdata(hdev); u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle); + struct sk_buff *skb_cd; switch (handle) { case 0xfc6f: /* Firmware dump from device */ @@ -3320,6 +3325,15 @@ static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb) * suspend and thus disable auto-suspend. */ usb_disable_autosuspend(data->udev); + + /* We need to forward the diagnostic packet to userspace daemon + * for backward compatibility, so we have to clone the packet + * extraly for the in-kernel coredump support. + */ + skb_cd = skb_clone(skb, GFP_ATOMIC); + if (skb_cd) + btmtk_process_coredump(hdev, skb_cd); + fallthrough; case 0x05ff: /* Firmware debug logging 1 */ case 0x05fe: /* Firmware debug logging 2 */ |