* [PATCH v8 2/3] Bluetooth: btmtk: introduce btmtk reset work
2023-06-28 22:54 [PATCH v8 1/3] Bluetooth: btusb: mediatek: readx_poll_timeout replaces open coding sean.wang
@ 2023-06-28 22:54 ` sean.wang
2023-06-28 22:54 ` [PATCH v8 3/3] Bluetooth: btusb: mediatek: add MediaTek devcoredump support sean.wang
2023-06-29 19:24 ` [PATCH v8 1/3] Bluetooth: btusb: mediatek: readx_poll_timeout replaces open coding patchwork-bot+bluetooth
2 siblings, 0 replies; 4+ messages in thread
From: sean.wang @ 2023-06-28 22:54 UTC (permalink / raw)
To: marcel, johan.hedberg, luiz.dentz
Cc: sean.wang, chris.lu, Soul.Huang, Leon.Yen, Deren.Wu, km.lin,
robin.chiu, Eddie.Chen, ch.yeh, jenhao.yang, Stella.Chang,
Tom.Chou, steve.lee, jsiuda, frankgor, abhishekpandit,
michaelfsun, mmandlik, abhishekpandit, mcchou, shawnku,
linux-bluetooth, linux-mediatek, linux-kernel, Jing Cai
From: Jing Cai <jing.cai@mediatek.com>
Introduce btmtk_reset_work which can be called whenever the firmware abort,
HCI command timeout, other fatal error happen.
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>
---
v2, v3, v4: rebase onto the latest codebase
v5: reset the device on hdev basis and use hci_cmd_sync_queue to
schedule reset work
v6 and v7: rebase onto the latest codebase
v8: drop _work suffix
---
drivers/bluetooth/btmtk.c | 15 ++++
drivers/bluetooth/btmtk.h | 8 +++
drivers/bluetooth/btusb.c | 145 +++++++++++++++++++-------------------
3 files changed, 97 insertions(+), 71 deletions(-)
diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c
index 8490d59502a5..c83ea3fd524f 100644
--- a/drivers/bluetooth/btmtk.c
+++ b/drivers/bluetooth/btmtk.c
@@ -285,6 +285,21 @@ int btmtk_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
}
EXPORT_SYMBOL_GPL(btmtk_set_bdaddr);
+void btmtk_reset_sync(struct hci_dev *hdev)
+{
+ struct btmediatek_data *reset_work = hci_get_priv(hdev);
+ int err;
+
+ hci_dev_lock(hdev);
+
+ err = hci_cmd_sync_queue(hdev, reset_work->reset_sync, NULL, NULL);
+ if (err)
+ bt_dev_err(hdev, "failed to reset (%d)", err);
+
+ hci_dev_unlock(hdev);
+}
+EXPORT_SYMBOL_GPL(btmtk_reset_sync);
+
MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
MODULE_AUTHOR("Mark Chen <mark-yw.chen@mediatek.com>");
MODULE_DESCRIPTION("Bluetooth support for MediaTek devices ver " VERSION);
diff --git a/drivers/bluetooth/btmtk.h b/drivers/bluetooth/btmtk.h
index fadc1a520652..75d8e71efcd3 100644
--- a/drivers/bluetooth/btmtk.h
+++ b/drivers/bluetooth/btmtk.h
@@ -120,8 +120,11 @@ struct btmtk_hci_wmt_params {
u32 *status;
};
+typedef int (*btmtk_reset_sync_func_t)(struct hci_dev *, void *);
+
struct btmediatek_data {
u32 dev_id;
+ btmtk_reset_sync_func_t reset_sync;
};
typedef int (*wmt_cmd_sync_func_t)(struct hci_dev *,
@@ -136,6 +139,8 @@ int btmtk_setup_firmware_79xx(struct hci_dev *hdev, const char *fwname,
int btmtk_setup_firmware(struct hci_dev *hdev, const char *fwname,
wmt_cmd_sync_func_t wmt_cmd_sync);
+
+void btmtk_reset_sync(struct hci_dev *hdev);
#else
static inline int btmtk_set_bdaddr(struct hci_dev *hdev,
@@ -156,4 +161,7 @@ static int btmtk_setup_firmware(struct hci_dev *hdev, const char *fwname,
return -EOPNOTSUPP;
}
+static void btmtk_reset_sync(struct hci_dev *hdev)
+{
+}
#endif
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 4c38d1c0f059..983380c4e609 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -3040,6 +3040,78 @@ static u32 btusb_mtk_reset_done(struct hci_dev *hdev)
return val & MTK_BT_RST_DONE;
}
+static int btusb_mtk_reset(struct hci_dev *hdev, void *rst_data)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct btmediatek_data *mediatek;
+ u32 val;
+ int err;
+
+ /* It's MediaTek specific bluetooth reset mechanism via USB */
+ if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
+ bt_dev_err(hdev, "last reset failed? Not resetting again");
+ return -EBUSY;
+ }
+
+ err = usb_autopm_get_interface(data->intf);
+ if (err < 0)
+ return err;
+
+ btusb_stop_traffic(data);
+ usb_kill_anchored_urbs(&data->tx_anchor);
+ mediatek = hci_get_priv(hdev);
+
+ if (mediatek->dev_id == 0x7925) {
+ btusb_mtk_uhw_reg_read(data, MTK_BT_RESET_REG_CONNV3, &val);
+ val |= (1 << 5);
+ btusb_mtk_uhw_reg_write(data, MTK_BT_RESET_REG_CONNV3, val);
+ btusb_mtk_uhw_reg_read(data, MTK_BT_RESET_REG_CONNV3, &val);
+ val &= 0xFFFF00FF;
+ val |= (1 << 13);
+ btusb_mtk_uhw_reg_write(data, MTK_BT_RESET_REG_CONNV3, val);
+ btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, 0x00010001);
+ btusb_mtk_uhw_reg_read(data, MTK_BT_RESET_REG_CONNV3, &val);
+ val |= (1 << 0);
+ btusb_mtk_uhw_reg_write(data, MTK_BT_RESET_REG_CONNV3, val);
+ btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF);
+ btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val);
+ btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF);
+ btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val);
+ msleep(100);
+ } else {
+ /* It's Device EndPoint Reset Option Register */
+ bt_dev_dbg(hdev, "Initiating reset mechanism via uhw");
+ btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
+ btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val);
+
+ /* Reset the bluetooth chip via USB interface. */
+ btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1);
+ btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF);
+ btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val);
+ btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF);
+ btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val);
+ /* MT7921 need to delay 20ms between toggle reset bit */
+ msleep(20);
+ btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0);
+ btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val);
+ }
+
+ err = readx_poll_timeout(btusb_mtk_reset_done, hdev, val,
+ val & MTK_BT_RST_DONE, 20000, 1000000);
+ if (err < 0)
+ bt_dev_err(hdev, "Reset timeout");
+
+ btusb_mtk_id_get(data, 0x70010200, &val);
+ if (!val)
+ bt_dev_err(hdev, "Can't get device id, subsys reset fail.");
+
+ usb_queue_reset_device(data->intf);
+
+ clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags);
+
+ return err;
+}
+
static int btusb_mtk_setup(struct hci_dev *hdev)
{
struct btusb_data *data = hci_get_drvdata(hdev);
@@ -3079,6 +3151,7 @@ static int btusb_mtk_setup(struct hci_dev *hdev)
mediatek = hci_get_priv(hdev);
mediatek->dev_id = dev_id;
+ mediatek->reset_sync = btusb_mtk_reset;
switch (dev_id) {
case 0x7663:
@@ -3236,76 +3309,6 @@ static int btusb_mtk_shutdown(struct hci_dev *hdev)
return 0;
}
-static void btusb_mtk_cmd_timeout(struct hci_dev *hdev)
-{
- struct btusb_data *data = hci_get_drvdata(hdev);
- u32 val;
- int err;
- struct btmediatek_data *mediatek;
-
- /* It's MediaTek specific bluetooth reset mechanism via USB */
- if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
- bt_dev_err(hdev, "last reset failed? Not resetting again");
- return;
- }
-
- err = usb_autopm_get_interface(data->intf);
- if (err < 0)
- return;
-
- btusb_stop_traffic(data);
- usb_kill_anchored_urbs(&data->tx_anchor);
- mediatek = hci_get_priv(hdev);
-
- if (mediatek->dev_id == 0x7925) {
- btusb_mtk_uhw_reg_read(data, MTK_BT_RESET_REG_CONNV3, &val);
- val |= (1 << 5);
- btusb_mtk_uhw_reg_write(data, MTK_BT_RESET_REG_CONNV3, val);
- btusb_mtk_uhw_reg_read(data, MTK_BT_RESET_REG_CONNV3, &val);
- val &= 0xFFFF00FF;
- val |= (1 << 13);
- btusb_mtk_uhw_reg_write(data, MTK_BT_RESET_REG_CONNV3, val);
- btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, 0x00010001);
- btusb_mtk_uhw_reg_read(data, MTK_BT_RESET_REG_CONNV3, &val);
- val |= (1 << 0);
- btusb_mtk_uhw_reg_write(data, MTK_BT_RESET_REG_CONNV3, val);
- btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF);
- btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val);
- btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF);
- btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val);
- msleep(100);
- } else {
- /* It's Device EndPoint Reset Option Register */
- bt_dev_dbg(hdev, "Initiating reset mechanism via uhw");
- btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
- btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val);
-
- /* Reset the bluetooth chip via USB interface. */
- btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1);
- btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF);
- btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val);
- btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF);
- btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val);
- /* MT7921 need to delay 20ms between toggle reset bit */
- msleep(20);
- btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0);
- btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val);
- }
-
- err = readx_poll_timeout(btusb_mtk_reset_done, hdev, val,
- val & MTK_BT_RST_DONE, 20000, 1000000);
- if (err < 0)
- bt_dev_err(hdev, "Reset timeout");
-
- btusb_mtk_id_get(data, 0x70010200, &val);
- if (!val)
- bt_dev_err(hdev, "Can't get device id, subsys reset fail.");
-
- usb_queue_reset_device(data->intf);
-
- clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags);
-}
-
static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb)
{
struct btusb_data *data = hci_get_drvdata(hdev);
@@ -4432,7 +4435,7 @@ static int btusb_probe(struct usb_interface *intf,
hdev->setup = btusb_mtk_setup;
hdev->shutdown = btusb_mtk_shutdown;
hdev->manufacturer = 70;
- hdev->cmd_timeout = btusb_mtk_cmd_timeout;
+ hdev->cmd_timeout = btmtk_reset_sync;
hdev->set_bdaddr = btmtk_set_bdaddr;
set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
--
2.25.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH v8 3/3] Bluetooth: btusb: mediatek: add MediaTek devcoredump support
2023-06-28 22:54 [PATCH v8 1/3] Bluetooth: btusb: mediatek: readx_poll_timeout replaces open coding sean.wang
2023-06-28 22:54 ` [PATCH v8 2/3] Bluetooth: btmtk: introduce btmtk reset work sean.wang
@ 2023-06-28 22:54 ` sean.wang
2023-06-29 19:24 ` [PATCH v8 1/3] Bluetooth: btusb: mediatek: readx_poll_timeout replaces open coding patchwork-bot+bluetooth
2 siblings, 0 replies; 4+ messages in thread
From: sean.wang @ 2023-06-28 22:54 UTC (permalink / raw)
To: marcel, johan.hedberg, luiz.dentz
Cc: sean.wang, chris.lu, Soul.Huang, Leon.Yen, Deren.Wu, km.lin,
robin.chiu, Eddie.Chen, ch.yeh, jenhao.yang, Stella.Chang,
Tom.Chou, steve.lee, jsiuda, frankgor, abhishekpandit,
michaelfsun, mmandlik, abhishekpandit, mcchou, shawnku,
linux-bluetooth, linux-mediatek, linux-kernel, Jing Cai
From: Jing Cai <jing.cai@mediatek.com>
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>
---
v2, v3: rebase onto the latest codebase
v4: update the newest API usage for the coredump which was already
into the upstream
v5: support devcoredump on hdev basis
v6: reuse the coredump state HCI_DEVCOREDUMP_* in driver
and drop the driver name copying
v7: rebase onto the latest codebase and refine the check if
we are reaching the end of the coredump
v8: rebase onto the latest tree
---
drivers/bluetooth/btmtk.c | 112 ++++++++++++++++++++++++++++++++++++++
drivers/bluetooth/btmtk.h | 28 ++++++++++
drivers/bluetooth/btusb.c | 14 +++++
3 files changed, 154 insertions(+)
diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c
index c83ea3fd524f..786f775196ae 100644
--- a/drivers/bluetooth/btmtk.c
+++ b/drivers/bluetooth/btmtk.c
@@ -53,6 +53,56 @@ struct btmtk_section_map {
};
} __packed;
+static void btmtk_coredump(struct hci_dev *hdev)
+{
+ int err;
+
+ err = __hci_cmd_send(hdev, 0xfd5b, 0, NULL);
+ if (err < 0)
+ bt_dev_err(hdev, "Coredump failed (%d)", err);
+}
+
+static void btmtk_coredump_hdr(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct btmediatek_data *data = hci_get_priv(hdev);
+ char buf[80];
+
+ snprintf(buf, sizeof(buf), "Controller Name: 0x%X\n",
+ data->dev_id);
+ skb_put_data(skb, buf, strlen(buf));
+
+ snprintf(buf, sizeof(buf), "Firmware Version: 0x%X\n",
+ data->cd_info.fw_version);
+ skb_put_data(skb, buf, strlen(buf));
+
+ snprintf(buf, sizeof(buf), "Driver: %s\n",
+ data->cd_info.driver_name);
+ skb_put_data(skb, buf, strlen(buf));
+
+ snprintf(buf, sizeof(buf), "Vendor: MediaTek\n");
+ skb_put_data(skb, buf, strlen(buf));
+}
+
+static void btmtk_coredump_notify(struct hci_dev *hdev, int state)
+{
+ struct btmediatek_data *data = hci_get_priv(hdev);
+
+ switch (state) {
+ case HCI_DEVCOREDUMP_IDLE:
+ data->cd_info.state = HCI_DEVCOREDUMP_IDLE;
+ break;
+ case HCI_DEVCOREDUMP_ACTIVE:
+ data->cd_info.state = HCI_DEVCOREDUMP_ACTIVE;
+ break;
+ case HCI_DEVCOREDUMP_TIMEOUT:
+ case HCI_DEVCOREDUMP_ABORT:
+ case HCI_DEVCOREDUMP_DONE:
+ data->cd_info.state = HCI_DEVCOREDUMP_IDLE;
+ btmtk_reset_sync(hdev);
+ break;
+ }
+}
+
int btmtk_setup_firmware_79xx(struct hci_dev *hdev, const char *fwname,
wmt_cmd_sync_func_t wmt_cmd_sync)
{
@@ -300,6 +350,68 @@ void btmtk_reset_sync(struct hci_dev *hdev)
}
EXPORT_SYMBOL_GPL(btmtk_reset_sync);
+int btmtk_register_coredump(struct hci_dev *hdev, const char *name,
+ u32 fw_version)
+{
+ struct btmediatek_data *data = hci_get_priv(hdev);
+
+ if (!IS_ENABLED(CONFIG_DEV_COREDUMP))
+ return -EOPNOTSUPP;
+
+ data->cd_info.fw_version = fw_version;
+ data->cd_info.state = HCI_DEVCOREDUMP_IDLE;
+ data->cd_info.driver_name = name;
+
+ return hci_devcd_register(hdev, btmtk_coredump, btmtk_coredump_hdr,
+ btmtk_coredump_notify);
+}
+EXPORT_SYMBOL_GPL(btmtk_register_coredump);
+
+int btmtk_process_coredump(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct btmediatek_data *data = hci_get_priv(hdev);
+ int err;
+
+ if (!IS_ENABLED(CONFIG_DEV_COREDUMP))
+ return 0;
+
+ switch (data->cd_info.state) {
+ case HCI_DEVCOREDUMP_IDLE:
+ err = hci_devcd_init(hdev, MTK_COREDUMP_SIZE);
+ if (err < 0)
+ break;
+ data->cd_info.cnt = 0;
+
+ /* It is supposed coredump can be done within 5 seconds */
+ schedule_delayed_work(&hdev->dump.dump_timeout,
+ msecs_to_jiffies(5000));
+ fallthrough;
+ case HCI_DEVCOREDUMP_ACTIVE:
+ default:
+ err = hci_devcd_append(hdev, skb);
+ if (err < 0)
+ break;
+ data->cd_info.cnt++;
+
+ /* Mediatek coredump data would be more than MTK_COREDUMP_NUM */
+ if (data->cd_info.cnt > MTK_COREDUMP_NUM &&
+ skb->len > sizeof(MTK_COREDUMP_END) &&
+ !memcmp((char *)&skb->data[skb->len - sizeof(MTK_COREDUMP_END)],
+ MTK_COREDUMP_END, sizeof(MTK_COREDUMP_END) - 1)) {
+ bt_dev_info(hdev, "Mediatek coredump end");
+ hci_devcd_complete(hdev);
+ }
+
+ break;
+ }
+
+ if (err < 0)
+ kfree_skb(skb);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(btmtk_process_coredump);
+
MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
MODULE_AUTHOR("Mark Chen <mark-yw.chen@mediatek.com>");
MODULE_DESCRIPTION("Bluetooth support for MediaTek devices ver " VERSION);
diff --git a/drivers/bluetooth/btmtk.h b/drivers/bluetooth/btmtk.h
index 75d8e71efcd3..68309dfe076a 100644
--- a/drivers/bluetooth/btmtk.h
+++ b/drivers/bluetooth/btmtk.h
@@ -22,6 +22,10 @@
#define MT7921_DLSTATUS 0x7c053c10
#define BT_DL_STATE BIT(1)
+#define MTK_COREDUMP_SIZE (1024 * 1000)
+#define MTK_COREDUMP_END "coredump end"
+#define MTK_COREDUMP_NUM 255
+
enum {
BTMTK_WMT_PATCH_DWNLD = 0x1,
BTMTK_WMT_TEST = 0x2,
@@ -122,9 +126,17 @@ struct btmtk_hci_wmt_params {
typedef int (*btmtk_reset_sync_func_t)(struct hci_dev *, void *);
+struct btmtk_coredump_info {
+ const char *driver_name;
+ u32 fw_version;
+ u16 cnt;
+ int state;
+};
+
struct btmediatek_data {
u32 dev_id;
btmtk_reset_sync_func_t reset_sync;
+ struct btmtk_coredump_info cd_info;
};
typedef int (*wmt_cmd_sync_func_t)(struct hci_dev *,
@@ -141,6 +153,11 @@ int btmtk_setup_firmware(struct hci_dev *hdev, const char *fwname,
wmt_cmd_sync_func_t wmt_cmd_sync);
void btmtk_reset_sync(struct hci_dev *hdev);
+
+int btmtk_register_coredump(struct hci_dev *hdev, const char *name,
+ u32 fw_version);
+
+int btmtk_process_coredump(struct hci_dev *hdev, struct sk_buff *skb);
#else
static inline int btmtk_set_bdaddr(struct hci_dev *hdev,
@@ -164,4 +181,15 @@ static int btmtk_setup_firmware(struct hci_dev *hdev, const char *fwname,
static void btmtk_reset_sync(struct hci_dev *hdev)
{
}
+
+static int btmtk_register_coredump(struct hci_dev *hdev, const char *name,
+ u32 fw_version)
+{
+ return -EOPNOTSUPP;
+}
+
+static int btmtk_process_coredump(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ return -EOPNOTSUPP;
+}
#endif
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 983380c4e609..bd27eddc1820 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 */
--
2.25.1
^ permalink raw reply related [flat|nested] 4+ messages in thread