From patchwork Fri Sep 30 00:23:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Wang X-Patchwork-Id: 12994803 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4872EC4332F for ; Fri, 30 Sep 2022 00:24:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229501AbiI3AYK (ORCPT ); Thu, 29 Sep 2022 20:24:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60708 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229813AbiI3AYG (ORCPT ); Thu, 29 Sep 2022 20:24:06 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 718D8200B34; Thu, 29 Sep 2022 17:24:00 -0700 (PDT) X-UUID: ce21a9f71c744652a60dcae5e190c2ff-20220930 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=2rBXAtDrZQiCn2meVosVdWFsBacLsqSXRiPraabhiYs=; b=Cso5nGPe/40aL2LVNNfaHNyZKzUq4kvs02R8cC4ejOpFyGiVBA7LBdYYE65ME96SZz+Y0ATTF4rXUnffxuSIZxnPAnHX8zd/dWSjjwTljI9KimovtY0SS9Dmuv2ZVawGei4xouF5NUpf22WkX7OLG1xBlgxjw8d5PJy+nkonWCI=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.11,REQID:a7fe1c65-950f-4211-a34e-20534ab72b79,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:95 X-CID-INFO: VERSION:1.1.11,REQID:a7fe1c65-950f-4211-a34e-20534ab72b79,IP:0,URL :0,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Spam_GS981B3D,ACTION :quarantine,TS:95 X-CID-META: VersionHash:39a5ff1,CLOUDID:87e0b2e4-87f9-4bb0-97b6-34957dc0fbbe,B ulkID:220930082356UBP5GDE7,BulkQuantity:0,Recheck:0,SF:38|28|17|19|48|823| 824,TC:nil,Content:0,EDM:-3,IP:nil,URL:11|1,File:nil,Bulk:nil,QS:nil,BEC:n il,COL:0 X-UUID: ce21a9f71c744652a60dcae5e190c2ff-20220930 Received: from mtkcas11.mediatek.inc [(172.21.101.40)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 948858056; Fri, 30 Sep 2022 08:23:55 +0800 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs11n2.mediatek.inc (172.21.101.187) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Fri, 30 Sep 2022 08:23:53 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Fri, 30 Sep 2022 08:23:53 +0800 From: To: , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , Jing Cai Subject: [PATCH v2 2/3] Bluetooth: btmtk: introduce btmtk reset work Date: Fri, 30 Sep 2022 08:23:48 +0800 Message-ID: <5e49a1add04ad2377711c6da0512bb450fcbb49c.1664497281.git.objelf@gmail.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Jing Cai Introduce btmtk_reset_work which can be called whenever the firmware abort, HCI command timeout, other fatal error happen. Co-developed-by: Sean Wang Signed-off-by: Sean Wang Signed-off-by: Jing Cai --- The patch is built and tested on the top of the patches [v6,1/3] Bluetooth: Add support for hci devcoredump [v6,2/3] Bluetooth: btusb: Add btusb devcoredump support [v6,3/3] Bluetooth: btintel: Add Intel devcoredump support which are contributed from Manish Mandlik v2: rebase onto the latest codebase --- drivers/bluetooth/btmtk.c | 16 ++++++ drivers/bluetooth/btmtk.h | 14 +++++ drivers/bluetooth/btusb.c | 114 ++++++++++++++++++++------------------ 3 files changed, 90 insertions(+), 54 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); + MODULE_AUTHOR("Sean Wang "); MODULE_AUTHOR("Mark Chen "); 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 9ef0dc648573..d0130a5b91d6 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2741,6 +2741,63 @@ static u32 btusb_mtk_reset_done(struct hci_dev *hdev) return val; } +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"); + + if (val & MTK_BT_RST_DONE) + bt_dev_err(hdev, "Bluetooth Reset Successfully"); + + 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); @@ -2777,6 +2834,8 @@ 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; @@ -2926,59 +2985,6 @@ 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"); - - if (val & MTK_BT_RST_DONE) - bt_dev_dbg(hdev, "Bluetooth Reset Successfully"); - - 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); @@ -3902,7 +3908,7 @@ 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);