@@ -18,6 +18,14 @@
#define MTK_FW_ROM_PATCH_SEC_MAP_SIZE 64
#define MTK_SEC_MAP_COMMON_SIZE 12
#define MTK_SEC_MAP_NEED_SEND_SIZE 52
+#define MTK_DRIVER_NAME_LEN 16
+#define MTK_COREDUMP_END "coredump end"
+
+enum {
+ BTMTK_COREDUMP_INIT,
+ BTMTK_COREDUMP_DISABLED,
+ BTMTK_COREDUMP_ACTIVE,
+};
struct btmtk_patch_header {
u8 datetime[16];
@@ -53,8 +61,65 @@ struct btmtk_section_map {
};
} __packed;
+static struct btmtk_coredump_info {
+ struct hci_dev *hdev;
+ char driver_name[MTK_DRIVER_NAME_LEN];
+ u32 dev_id;
+ u32 fw_version;
+ int state;
+} coredump_info;
+
static struct btmtk_reset_work reset_work;
+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 int btmtk_coredump_hdr(struct hci_dev *hdev, char *buf, size_t size)
+{
+ char *ptr = buf;
+ size_t rem = size;
+ size_t read = 0;
+
+ read = snprintf(ptr, rem, "Controller Name: 0x%X\n", coredump_info.dev_id);
+ rem -= read;
+ ptr += read;
+
+ read = snprintf(ptr, rem, "Firmware Version: 0x%X\n", coredump_info.fw_version);
+ rem -= read;
+ ptr += read;
+
+ read = snprintf(ptr, rem, "Driver: %s\n", coredump_info.driver_name);
+ rem -= read;
+ ptr += read;
+
+ read = snprintf(ptr, rem, "Vendor: MediaTek\n");
+ rem -= read;
+ ptr += read;
+
+ return size - rem;
+}
+
+static void btmtk_coredump_notify(struct hci_dev *hdev, int state)
+{
+ switch (state) {
+ case HCI_DEVCOREDUMP_ACTIVE:
+ coredump_info.state = BTMTK_COREDUMP_ACTIVE;
+ break;
+ case HCI_DEVCOREDUMP_TIMEOUT:
+ case HCI_DEVCOREDUMP_ABORT:
+ case HCI_DEVCOREDUMP_DONE:
+ coredump_info.state = BTMTK_COREDUMP_INIT;
+ btmtk_reset_sync(coredump_info.hdev);
+ break;
+ }
+}
+
int btmtk_setup_firmware_79xx(struct hci_dev *hdev, const char *fwname,
wmt_cmd_sync_func_t wmt_cmd_sync)
{
@@ -296,6 +361,65 @@ void btmtk_reset_sync(struct hci_dev *hdev)
}
EXPORT_SYMBOL_GPL(btmtk_reset_sync);
+void btmtk_register_coredump(struct hci_dev *hdev, u32 dev_id,
+ const char *name, u32 fw_version)
+{
+ if (!IS_ENABLED(CONFIG_DEV_COREDUMP))
+ return;
+
+ coredump_info.hdev = hdev;
+ coredump_info.dev_id = dev_id;
+ coredump_info.fw_version = fw_version;
+ coredump_info.state = BTMTK_COREDUMP_INIT;
+ strncpy(coredump_info.driver_name, name, MTK_DRIVER_NAME_LEN - 1);
+
+ hci_devcoredump_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)
+{
+ int err;
+
+ if (!IS_ENABLED(CONFIG_DEV_COREDUMP))
+ return 0;
+
+ switch (coredump_info.state) {
+ case BTMTK_COREDUMP_DISABLED:
+ err = -EINVAL;
+ break;
+ case BTMTK_COREDUMP_INIT:
+ err = hci_devcoredump_init(hdev, 1024000);
+ if (err < 0)
+ break;
+ /* It is supposed coredump can be done within 5 seconds */
+ schedule_delayed_work(&hdev->dump.dump_timeout,
+ msecs_to_jiffies(5000));
+ fallthrough;
+ case BTMTK_COREDUMP_ACTIVE:
+ default:
+ err = hci_devcoredump_append(hdev, skb);
+ if (err < 0)
+ break;
+
+ if (skb->len > 12 &&
+ !strncmp((char *)&skb->data[skb->len - 13],
+ MTK_COREDUMP_END, 12))
+ hci_devcoredump_complete(hdev);
+
+ break;
+ }
+
+ if (err < 0) {
+ coredump_info.state = BTMTK_COREDUMP_DISABLED;
+ 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);
@@ -138,6 +138,9 @@ int btmtk_setup_firmware(struct hci_dev *hdev, const char *fwname,
wmt_cmd_sync_func_t wmt_cmd_sync);
void btmtk_init_reset_work(struct hci_dev *hdev, work_func_t func);
void btmtk_reset_sync(struct hci_dev *hdev);
+void btmtk_register_coredump(struct hci_dev *hdev, u32 dev_id, 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,
@@ -165,4 +168,14 @@ static void btmtk_init_reset_work(struct hci_dev *hdev, work_func_t func)
static void btmtk_reset_sync(struct hci_dev *hdev)
{
}
+
+void btmtk_register_coredump(struct hci_dev *hdev, u32 dev_id, const char *name,
+ u32 fw_version)
+{
+}
+
+static int btmtk_process_coredump(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ return -EOPNOTSUPP;
+}
#endif
@@ -2777,6 +2777,7 @@ static int btusb_mtk_setup(struct hci_dev *hdev)
}
btmtk_init_reset_work(hdev, btusb_mtk_reset_work);
+ btmtk_register_coredump(hdev, dev_id, btusb_driver.name, fw_version);
switch (dev_id) {
case 0x7663:
@@ -2931,6 +2932,7 @@ 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 */
@@ -2938,6 +2940,15 @@ 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 */