| Message ID | 037a3ab699b7f545884b493c5ea5a4b7e7b667a8.1682549719.git.objelf@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v4,1/3] Bluetooth: btusb: mediatek: use readx_poll_timeout instead of open coding | expand |
Hi Sean, On Wed, Apr 26, 2023 at 4:08 PM <sean.wang@mediatek.com> wrote: > > 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: 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 > --- > drivers/bluetooth/btmtk.c | 16 ++++++ > drivers/bluetooth/btmtk.h | 14 +++++ > drivers/bluetooth/btusb.c | 106 ++++++++++++++++++++------------------ > 3 files changed, 86 insertions(+), 50 deletions(-) > > diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c > index 809762d64fc6..77df7b5c3ef3 100644 > --- a/drivers/bluetooth/btmtk.c > +++ b/drivers/bluetooth/btmtk.c > @@ -53,6 +53,8 @@ struct btmtk_section_map { > }; > } __packed; > > +static struct btmtk_reset_work reset_work; > + > int btmtk_setup_firmware_79xx(struct hci_dev *hdev, const char *fwname, > wmt_cmd_sync_func_t wmt_cmd_sync) > { > @@ -280,6 +282,20 @@ int btmtk_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr) > } > EXPORT_SYMBOL_GPL(btmtk_set_bdaddr); > > +void btmtk_init_reset_work(struct hci_dev *hdev, work_func_t func) > +{ > + reset_work.hdev = hdev; > + INIT_WORK(&reset_work.work, func); > +} > +EXPORT_SYMBOL_GPL(btmtk_init_reset_work); > + > +void btmtk_reset_sync(struct hci_dev *hdev) > +{ > + schedule_work(&reset_work.work); > + flush_work(&reset_work.work); > +} > +EXPORT_SYMBOL_GPL(btmtk_reset_sync); Lets stop assuming there is only one controller in the system, so works like reset_work need to be store on a per hdev basis, not using a global variable, also Im not sure why you would need dedicated work for reset? Can't you use hci_cmd_sync_queue/hci_cmd_sync_submit? > 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 2a88ea8e475e..22d39f637652 100644 > --- a/drivers/bluetooth/btmtk.h > +++ b/drivers/bluetooth/btmtk.h > @@ -119,6 +119,11 @@ struct btmtk_hci_wmt_params { > u32 *status; > }; > > +struct btmtk_reset_work { > + struct hci_dev *hdev; > + struct work_struct work; > +}; > + > typedef int (*wmt_cmd_sync_func_t)(struct hci_dev *, > struct btmtk_hci_wmt_params *); > > @@ -131,6 +136,8 @@ 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_init_reset_work(struct hci_dev *hdev, work_func_t func); > +void btmtk_reset_sync(struct hci_dev *hdev); > #else > > static inline int btmtk_set_bdaddr(struct hci_dev *hdev, > @@ -151,4 +158,11 @@ static int btmtk_setup_firmware(struct hci_dev *hdev, const char *fwname, > return -EOPNOTSUPP; > } > > +static void btmtk_init_reset_work(struct hci_dev *hdev, work_func_t func) > +{ > +} > + > +static void btmtk_reset_sync(struct hci_dev *hdev) > +{ > +} > #endif > diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c > index 275e0666503d..e84f1a8d03a3 100644 > --- a/drivers/bluetooth/btusb.c > +++ b/drivers/bluetooth/btusb.c > @@ -2946,6 +2946,59 @@ static u32 btusb_mtk_reset_done(struct hci_dev *hdev) > return val & MTK_BT_RST_DONE; > } > > +static void btusb_mtk_reset_work(struct work_struct *work) > +{ > + struct btmtk_reset_work *info = container_of(work, > + struct btmtk_reset_work, > + work); > + struct hci_dev *hdev = info->hdev; > + struct btusb_data *data = hci_get_drvdata(hdev); > + 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; > + } > + > + err = usb_autopm_get_interface(data->intf); > + if (err < 0) > + return; > + > + btusb_stop_traffic(data); > + usb_kill_anchored_urbs(&data->tx_anchor); > + > + /* 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_mtk_setup(struct hci_dev *hdev) > { > struct btusb_data *data = hci_get_drvdata(hdev); > @@ -2982,6 +3035,8 @@ static int btusb_mtk_setup(struct hci_dev *hdev) > } > } > > + btmtk_init_reset_work(hdev, btusb_mtk_reset_work); > + > switch (dev_id) { > case 0x7663: > fwname = FIRMWARE_MT7663; > @@ -3131,55 +3186,6 @@ 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; > - > - /* 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); > - > - /* 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); > @@ -4301,7 +4307,7 @@ 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 >
diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c index 809762d64fc6..77df7b5c3ef3 100644 --- a/drivers/bluetooth/btmtk.c +++ b/drivers/bluetooth/btmtk.c @@ -53,6 +53,8 @@ struct btmtk_section_map { }; } __packed; +static struct btmtk_reset_work reset_work; + int btmtk_setup_firmware_79xx(struct hci_dev *hdev, const char *fwname, wmt_cmd_sync_func_t wmt_cmd_sync) { @@ -280,6 +282,20 @@ int btmtk_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr) } EXPORT_SYMBOL_GPL(btmtk_set_bdaddr); +void btmtk_init_reset_work(struct hci_dev *hdev, work_func_t func) +{ + reset_work.hdev = hdev; + INIT_WORK(&reset_work.work, func); +} +EXPORT_SYMBOL_GPL(btmtk_init_reset_work); + +void btmtk_reset_sync(struct hci_dev *hdev) +{ + schedule_work(&reset_work.work); + flush_work(&reset_work.work); +} +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 2a88ea8e475e..22d39f637652 100644 --- a/drivers/bluetooth/btmtk.h +++ b/drivers/bluetooth/btmtk.h @@ -119,6 +119,11 @@ struct btmtk_hci_wmt_params { u32 *status; }; +struct btmtk_reset_work { + struct hci_dev *hdev; + struct work_struct work; +}; + typedef int (*wmt_cmd_sync_func_t)(struct hci_dev *, struct btmtk_hci_wmt_params *); @@ -131,6 +136,8 @@ 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_init_reset_work(struct hci_dev *hdev, work_func_t func); +void btmtk_reset_sync(struct hci_dev *hdev); #else static inline int btmtk_set_bdaddr(struct hci_dev *hdev, @@ -151,4 +158,11 @@ static int btmtk_setup_firmware(struct hci_dev *hdev, const char *fwname, return -EOPNOTSUPP; } +static void btmtk_init_reset_work(struct hci_dev *hdev, work_func_t func) +{ +} + +static void btmtk_reset_sync(struct hci_dev *hdev) +{ +} #endif diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 275e0666503d..e84f1a8d03a3 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2946,6 +2946,59 @@ static u32 btusb_mtk_reset_done(struct hci_dev *hdev) return val & MTK_BT_RST_DONE; } +static void btusb_mtk_reset_work(struct work_struct *work) +{ + struct btmtk_reset_work *info = container_of(work, + struct btmtk_reset_work, + work); + struct hci_dev *hdev = info->hdev; + struct btusb_data *data = hci_get_drvdata(hdev); + 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; + } + + err = usb_autopm_get_interface(data->intf); + if (err < 0) + return; + + btusb_stop_traffic(data); + usb_kill_anchored_urbs(&data->tx_anchor); + + /* 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_mtk_setup(struct hci_dev *hdev) { struct btusb_data *data = hci_get_drvdata(hdev); @@ -2982,6 +3035,8 @@ static int btusb_mtk_setup(struct hci_dev *hdev) } } + btmtk_init_reset_work(hdev, btusb_mtk_reset_work); + switch (dev_id) { case 0x7663: fwname = FIRMWARE_MT7663; @@ -3131,55 +3186,6 @@ 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; - - /* 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); - - /* 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); @@ -4301,7 +4307,7 @@ 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);