From patchwork Fri May 12 21:20:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: sean.wang@mediatek.com X-Patchwork-Id: 93415 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp5401162vqo; Fri, 12 May 2023 14:29:22 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ5A3UIF9Xz4XZz54SwoQLWQG2YB4dLuqK6p58EASz7OsjoNh9m7ZgYwzX2Z6KWwFZVXyEy5 X-Received: by 2002:a05:6a20:6a14:b0:d9:250:665c with SMTP id p20-20020a056a206a1400b000d90250665cmr31572961pzk.15.1683926962555; Fri, 12 May 2023 14:29:22 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1683926962; cv=none; d=google.com; s=arc-20160816; b=Tiwwx6d6Za/M/axnY8n5CZx+DYLynOVWMPk+Tv/t9gjfdR6VOk560jJtocCx7MED1d 1vWrAd6QwimAaKxR4psI3tUAK3Tp5omT+Dy2V6+AMGjqSDAKa8Y07px14tOfP5W5/n4H aCL4TIlOre8WT9hSjof07YdAUCA3aRFN5zF5j64JtuB03H6O/yMvrMLtY4O9Nuo8PHVt g7PAdDZrvwpYBp0hKf0iczRh7uYESF/VVgabthbx++YxA99+Fmiv76kpQ9JpXJ9l0ToA Bx1quc3+Zj7Rmbvdz6iWFjHMF5B3q6yDF/A37JSJmj+VYfyzGOpJRR2v3xwurr+peEua KLQQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:message-id:date:subject:cc:to:from :dkim-signature; bh=RyC+sBrNP9jY0U1et1wYi4MO7UH4FsSyLmrleV55OIc=; b=MGXdsO8JXSPfs7sDWkYdeUYemR3oByY80E1RDjlIDSb95mgvhFd1BrypnobQvKAnBm dDbxbZXqgSPIDE2MtJFQfpcKkVpVBYmJ9T6nXe7lsUljsR7SjDxqkZVPoal2fzIMxw3Z /QQmG8ENNomiL1/KGHSzKyzJE9Ft063wLCsIJiuvyhrkRLXbfGlOEt9IbBQg2hh5KlG9 1gsqHu4wggzMRAsoEDU33JMdpdnbsCGUzF1kyTuxaJcEw1QDGuoDTEcRxlcI0hHj+ebN 1SvdDHYBslwPcfzNxs1Asl3Fqmx8OwJMkvRACNyUebNywFqdNu+nYUW+WU9+kRtDIL4/ DJMA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@mediatek.com header.s=dk header.b=ZDYToNoQ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=mediatek.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id p6-20020a637f46000000b00528cd045e4asi9369856pgn.391.2023.05.12.14.29.08; Fri, 12 May 2023 14:29:22 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@mediatek.com header.s=dk header.b=ZDYToNoQ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=mediatek.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238411AbjELVUX (ORCPT + 99 others); Fri, 12 May 2023 17:20:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48592 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229611AbjELVUV (ORCPT ); Fri, 12 May 2023 17:20:21 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AEBC3CE; Fri, 12 May 2023 14:20:16 -0700 (PDT) X-UUID: c77b309cf10a11ed9cb5633481061a41-20230513 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=RyC+sBrNP9jY0U1et1wYi4MO7UH4FsSyLmrleV55OIc=; b=ZDYToNoQzdgpthB38Zc9NKw3Z4L93/JDBSixMafnMuvDjQBvNPXG1yry+awPg2JalB3hIo+FWVkW1FZeIuUFWSjm4plZ7zvLtjFzgLZZDc6SNihUHvogs97UpZ8gPeqnIfnduO3fWhOwFr40GeFxBrlJLbAXjbxAmmdvqyibeVI=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.24,REQID:fcfd1623-04d1-4824-b120-7ed6ac68343f,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:178d4d4,CLOUDID:3d87afc0-e32c-4c97-918d-fbb3fc224d4e,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-UUID: c77b309cf10a11ed9cb5633481061a41-20230513 Received: from mtkmbs13n2.mediatek.inc [(172.21.101.108)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 98166889; Sat, 13 May 2023 05:20:11 +0800 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) 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 15.2.1118.26; Sat, 13 May 2023 05:20:10 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Sat, 13 May 2023 05:20:10 +0800 From: To: , , CC: , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v6 1/3] Bluetooth: btusb: mediatek: use readx_poll_timeout instead of open coding Date: Sat, 13 May 2023 05:20:07 +0800 Message-ID: X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 X-MTK: N X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS, T_SCC_BODY_TEXT_LINE,T_SPF_TEMPERROR,UNPARSEABLE_RELAY,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1765725398448294349?= X-GMAIL-MSGID: =?utf-8?q?1765725398448294349?= From: Sean Wang Use readx_poll_timeout instead of open coding to poll the hardware reset status until it is done. Signed-off-by: Sean Wang --- v2: use 20ms as the unit to poll according to the requirement of readx_poll_timeout v3: refine btusb_mtk_reset_done and drop the necessary error check in btusb_mtk_cmd_timeout v4, v5, v6: rebase onto the latest codebase --- drivers/bluetooth/btusb.c | 30 +++++++++++++++--------------- 1 file changed, 15 insertions(+), 15 deletions(-) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 2a8e2bb038f5..275e0666503d 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2566,8 +2566,6 @@ static int btusb_setup_realtek(struct hci_dev *hdev) #define MTK_EP_RST_OPT 0x74011890 #define MTK_EP_RST_IN_OUT_OPT 0x00010001 #define MTK_BT_RST_DONE 0x00000100 -#define MTK_BT_RESET_WAIT_MS 100 -#define MTK_BT_RESET_NUM_TRIES 10 static void btusb_mtk_wmt_recv(struct urb *urb) { @@ -2938,6 +2936,16 @@ static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id) return btusb_mtk_reg_read(data, reg, id); } +static u32 btusb_mtk_reset_done(struct hci_dev *hdev) +{ + struct btusb_data *data = hci_get_drvdata(hdev); + u32 val = 0; + + btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val); + + return val & MTK_BT_RST_DONE; +} + static int btusb_mtk_setup(struct hci_dev *hdev) { struct btusb_data *data = hci_get_drvdata(hdev); @@ -3127,7 +3135,7 @@ static void btusb_mtk_cmd_timeout(struct hci_dev *hdev) { struct btusb_data *data = hci_get_drvdata(hdev); u32 val; - int err, retry = 0; + int err; /* It's MediaTek specific bluetooth reset mechanism via USB */ if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { @@ -3158,18 +3166,10 @@ static void btusb_mtk_cmd_timeout(struct hci_dev *hdev) btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0); btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val); - /* Poll the register until reset is completed */ - do { - btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val); - if (val & MTK_BT_RST_DONE) { - bt_dev_dbg(hdev, "Bluetooth Reset Successfully"); - break; - } - - bt_dev_dbg(hdev, "Polling Bluetooth Reset CR"); - retry++; - msleep(MTK_BT_RESET_WAIT_MS); - } while (retry < MTK_BT_RESET_NUM_TRIES); + 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) From patchwork Fri May 12 21:20:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: sean.wang@mediatek.com X-Patchwork-Id: 93411 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp5399699vqo; Fri, 12 May 2023 14:26:11 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ6R9YPbqeeIa5wqOBP0zJqWOwDkNFLoSaE4sedQkVhutL9pbynYgZwhKBO74+nurH7nXSm7 X-Received: by 2002:a05:6a20:4325:b0:100:ac13:9a57 with SMTP id h37-20020a056a20432500b00100ac139a57mr24871996pzk.55.1683926771322; Fri, 12 May 2023 14:26:11 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1683926771; cv=none; d=google.com; s=arc-20160816; b=WqmUnstEUi2enlnMUFiVdy+2TepqCvj6fxkFxu3JizjcWl+JIA2N+LV9MOkqSK7xSU PnDb5cLjxv8q26kM4e2brrbyCf3Sx10wVRfe0s0ER6IacMRkOvldmkpnxjaLcRrIRPm+ ANyRb7kNwG5cZqQpNknYaI7+HCdyWJhchZkQ+wGdJFRPqzBo6TH+bhKlxvWcHi89cCFD aDdk1ljctV/4r6ckd0eWtA686LFZwrz8Eo9jnWaJOigfv6jCgzjWLEPPZJE7Xk+xUOvA 1M+TPbk2eUZ88F9nPkm2RoI1PfWC5vJ5rjVmvSyJiwpHbxpmKepy4KG8Y8rpyt/sufSz HJ1Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=3a+vrSpCVQeFi0WqRUg8vGI8nykKk7w7OUqSqNUJKko=; b=GJ0W8Qd7Enh20GEyphOSZmJB8PgMWMBdPbroNnp7gTakYiRQW1Azci/ZfL+vrH2Xyp Pumex4qhBPjwI0G8pWRzjPox1FP0J1uIg7jsmVzK7i7QSVBdFgJEoWzel91Hwo75xUjD XjITn96W4RjjtXTHHD102J/PbD/Rc2b7YQbzJiO0yonUR4fyTm59BeAxBF8LJyj7tUD1 h7Vqw1IHqkJ3QdHbc3Riq46VKI0EsLXIZyxNgiWOihpQ2a96175oLKOFpLXudxfHAYsy Io2ePgp3UXBEbCFvN+XfMTsbn7qAqMDM3xrArB3CJZjncGqPrxCCCWzuQMSFGChg3jVo LmCQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@mediatek.com header.s=dk header.b=GVPDhsB9; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=mediatek.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id d12-20020a63734c000000b00524cbd19d01si10154758pgn.679.2023.05.12.14.25.59; Fri, 12 May 2023 14:26:11 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@mediatek.com header.s=dk header.b=GVPDhsB9; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=mediatek.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240039AbjELVU1 (ORCPT + 99 others); Fri, 12 May 2023 17:20:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48606 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239452AbjELVUY (ORCPT ); Fri, 12 May 2023 17:20:24 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7198DCD; Fri, 12 May 2023 14:20:19 -0700 (PDT) X-UUID: c90c1390f10a11ed9cb5633481061a41-20230513 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=3a+vrSpCVQeFi0WqRUg8vGI8nykKk7w7OUqSqNUJKko=; b=GVPDhsB9z0QMPLJVfkU2HCO/0ZdcxacurIym1XIhtMEpc+jqkDbR5Oua11lnaO/dBEVbpGbil2WnTaB5LS1cO86styuvB365B2DrR5ixAv8PycOagR4B4zJ6QVxzSfqKJrdkHA5vF3K6PtnYHYcs907Mqo3rs0V9DEjT6lItmLE=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.24,REQID:d9fba5a5-be82-480c-b789-6e5d6f3a3a20,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:178d4d4,CLOUDID:6787afc0-e32c-4c97-918d-fbb3fc224d4e,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-UUID: c90c1390f10a11ed9cb5633481061a41-20230513 Received: from mtkmbs10n2.mediatek.inc [(172.21.101.183)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 641274908; Sat, 13 May 2023 05:20:14 +0800 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Sat, 13 May 2023 05:20:13 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Sat, 13 May 2023 05:20:12 +0800 From: To: , , CC: , , , , , , , , , , , , , , , , , , , , , , , Jing Cai Subject: [PATCH v6 2/3] Bluetooth: btmtk: introduce btmtk reset work Date: Sat, 13 May 2023 05:20:08 +0800 Message-ID: X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: MIME-Version: 1.0 X-MTK: N X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS, T_SCC_BODY_TEXT_LINE,T_SPF_TEMPERROR,UNPARSEABLE_RELAY,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1765725198251999795?= X-GMAIL-MSGID: =?utf-8?q?1765725198251999795?= 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: Chris Lu Signed-off-by: Chris Lu Co-developed-by: Sean Wang Signed-off-by: Sean Wang Signed-off-by: Jing Cai --- 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: rebase onto the latest codebase --- drivers/bluetooth/btmtk.c | 15 ++++++ drivers/bluetooth/btmtk.h | 11 ++++ drivers/bluetooth/btusb.c | 108 ++++++++++++++++++++------------------ 3 files changed, 84 insertions(+), 50 deletions(-) diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c index 809762d64fc6..ac2fac7e3c5f 100644 --- a/drivers/bluetooth/btmtk.c +++ b/drivers/bluetooth/btmtk.c @@ -280,6 +280,21 @@ 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 btmtk_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 "); 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..6245662f6ccb 100644 --- a/drivers/bluetooth/btmtk.h +++ b/drivers/bluetooth/btmtk.h @@ -122,6 +122,12 @@ struct btmtk_hci_wmt_params { typedef int (*wmt_cmd_sync_func_t)(struct hci_dev *, struct btmtk_hci_wmt_params *); +typedef int (*btmtk_reset_sync_func_t)(struct hci_dev *, void *); + +struct btmtk_data { + btmtk_reset_sync_func_t reset_sync; +}; + #if IS_ENABLED(CONFIG_BT_MTK) int btmtk_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr); @@ -131,6 +137,8 @@ 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, @@ -151,4 +159,7 @@ 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 275e0666503d..034edd8ad777 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2946,8 +2946,60 @@ static u32 btusb_mtk_reset_done(struct hci_dev *hdev) return val & MTK_BT_RST_DONE; } +static int btusb_mtk_reset_work(struct hci_dev *hdev, void *rst_data) +{ + 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 -EBUSY; + } + + err = usb_autopm_get_interface(data->intf); + if (err < 0) + return err; + + 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); + + return err; +} + static int btusb_mtk_setup(struct hci_dev *hdev) { + struct btmtk_data *btmtk_data = hci_get_priv(hdev); struct btusb_data *data = hci_get_drvdata(hdev); struct btmtk_hci_wmt_params wmt_params; ktime_t calltime, delta, rettime; @@ -2982,6 +3034,8 @@ static int btusb_mtk_setup(struct hci_dev *hdev) } } + btmtk_data->reset_sync = btusb_mtk_reset_work; + switch (dev_id) { case 0x7663: fwname = FIRMWARE_MT7663; @@ -3131,55 +3185,6 @@ 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); @@ -4195,6 +4200,9 @@ static int btusb_probe(struct usb_interface *intf, } else if (id->driver_info & BTUSB_REALTEK) { /* Allocate extra space for Realtek device */ priv_size += sizeof(struct btrealtek_data); + } else if (id->driver_info & BTUSB_MEDIATEK) { + /* Allocate extra space for Mediatek device */ + priv_size += sizeof(struct btmtk_data); } data->recv_acl = hci_recv_frame; @@ -4301,7 +4309,7 @@ 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); From patchwork Fri May 12 21:20:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: sean.wang@mediatek.com X-Patchwork-Id: 93412 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp5399785vqo; Fri, 12 May 2023 14:26:19 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ4z70vg75vR3YEdYlWopym/iLVmpMi+bTDIsLBmYy8liLHcMnlxclNoqgOQNufKaXwvZELE X-Received: by 2002:a17:903:2cb:b0:1ac:73e9:de5 with SMTP id s11-20020a17090302cb00b001ac73e90de5mr23173861plk.46.1683926779412; Fri, 12 May 2023 14:26:19 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1683926779; cv=none; d=google.com; s=arc-20160816; b=pe4p12KrI9b17ermJ9GLsrcbtg42UnVvDlzQul6twOzPojINifW/IY3EqZPt46lnxB ra1DnTGropzGgfmp14yjMumOSPNHELGCF5eV6v0+yAqzxmPjJ3mof5ZDYuccvhZf7FO8 hX6NU+c18oeH+OH7OM2KsCWo4cD/VTtGHTPpew91SyvZcleTBDH96Brh2P29ycs3quI3 q9wMP4+lVaQHYkNZXh7dgzIilKFCX2gHRIezFCwfvsIGP9fsBej44sOn5S1ycdLAqune Pco7EuxGn+5D50aQs5BTG/teQ+55JJd7CGgd+klBoqus/BdTlAiYFL442bAMA87uW2HE ZEqw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=2y69ufMAqUYfVUbII4JxVwe9FvW7v4sAn6IsWvtVGOs=; b=wbGaleT3M4vUw/VrW9pp89ZmJYcJkm74WObGwHGvWoSHdfz6+NWp4w0GDjW0FEJxda hqhaLiwLllwhifOccuN6rXnaJdL6UugQIVXkcI/Qx8TDryuVE/0UyOrlrLtOCz+1ll6n GyDNmD+aVSMX/mg3g+2NH9r+NEw4J0ge7AOMI/hDaArp1kmAgWmlUMBqXeLN/RU+bHxw NxePMzXeR2MWxXj6ZN3y77dgLPgDmJAoFS6AAFq18rLolHo2SxXgW/JVYraguN0Vr1W9 2kJyWWvFloV3Aw4Jhwdll/yYYXLajxPTamRDQ+DmumsNZqHrmzTqBrvRWdfjVSlYnr7U 1Bow== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@mediatek.com header.s=dk header.b=Be5jqB8e; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=mediatek.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id ij25-20020a170902ab5900b001a971d32b41si9248286plb.267.2023.05.12.14.26.07; Fri, 12 May 2023 14:26:19 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@mediatek.com header.s=dk header.b=Be5jqB8e; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=mediatek.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239452AbjELVUb (ORCPT + 99 others); Fri, 12 May 2023 17:20:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239485AbjELVU0 (ORCPT ); Fri, 12 May 2023 17:20:26 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B740DAD; Fri, 12 May 2023 14:20:23 -0700 (PDT) X-UUID: c9bb79f2f10a11edb20a276fd37b9834-20230513 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=2y69ufMAqUYfVUbII4JxVwe9FvW7v4sAn6IsWvtVGOs=; b=Be5jqB8eF7A0jkCPxRgVmL3pxXhwYoI23jljbMkQKQ19DAALpLm6dk+jh2gt5NnMASKocWXoy06H1Mg6+fv8+/RPMIqHz0I9OjsK4UmhAhAuAVihwTNw77+fpP1lI+4v6dXmFse6LEPmUljoQ+kH5wo4Dq2EcmNhwye7w7RiIh4=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.24,REQID:93ad1c50-0684-42bf-baa9-e345a14c2ff2,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:1.1.24,REQID:93ad1c50-0684-42bf-baa9-e345a14c2ff2,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:178d4d4,CLOUDID:a728a86b-2f20-4998-991c-3b78627e4938,B ulkID:23051305201733QEI01H,BulkQuantity:0,Recheck:0,SF:17|19|48|38|29|28,T C:nil,Content:0,EDM:-3,IP:nil,URL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,CO L:0,OSI:0,OSA:0,AV:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-UUID: c9bb79f2f10a11edb20a276fd37b9834-20230513 Received: from mtkmbs13n1.mediatek.inc [(172.21.101.193)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 118793442; Sat, 13 May 2023 05:20:15 +0800 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs13n2.mediatek.inc (172.21.101.108) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Sat, 13 May 2023 05:20:14 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Sat, 13 May 2023 05:20:14 +0800 From: To: , , CC: , , , , , , , , , , , , , , , , , , , , , , , Jing Cai Subject: [PATCH v6 3/3] Bluetooth: btusb: mediatek: add MediaTek devcoredump support Date: Sat, 13 May 2023 05:20:09 +0800 Message-ID: <850ac832598f9d8558996fade7f7db0c0cf73521.1683925801.git.objelf@gmail.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: MIME-Version: 1.0 X-MTK: N X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS, SPF_PASS,T_SCC_BODY_TEXT_LINE,UNPARSEABLE_RELAY,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1765725206122561420?= X-GMAIL-MSGID: =?utf-8?q?1765725206122561420?= From: Jing Cai 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 Signed-off-by: Chris Lu Co-developed-by: Sean Wang Signed-off-by: Sean Wang Signed-off-by: Jing Cai --- 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 --- drivers/bluetooth/btmtk.c | 106 ++++++++++++++++++++++++++++++++++++++ drivers/bluetooth/btmtk.h | 27 ++++++++++ drivers/bluetooth/btusb.c | 14 +++++ 3 files changed, 147 insertions(+) diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c index ac2fac7e3c5f..60233afc0a9c 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 btmtk_data *data = hci_get_priv(hdev); + char buf[80]; + + snprintf(buf, sizeof(buf), "Controller Name: 0x%X\n", + data->cd_info.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 btmtk_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) { @@ -295,6 +345,62 @@ void btmtk_reset_sync(struct hci_dev *hdev) } EXPORT_SYMBOL_GPL(btmtk_reset_sync); +int btmtk_register_coredump(struct hci_dev *hdev, u32 dev_id, + const char *name, u32 fw_version) +{ + struct btmtk_data *data = hci_get_priv(hdev); + + if (!IS_ENABLED(CONFIG_DEV_COREDUMP)) + return -EOPNOTSUPP; + + data->cd_info.dev_id = dev_id; + 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 btmtk_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; + /* 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; + + if (skb->len > 12 && + !strncmp((char *)&skb->data[skb->len - 13], + MTK_COREDUMP_END, 12)) + hci_devcd_complete(hdev); + + break; + } + + if (err < 0) + kfree_skb(skb); + + return err; +} +EXPORT_SYMBOL_GPL(btmtk_process_coredump); + 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 6245662f6ccb..852a67db8f80 100644 --- a/drivers/bluetooth/btmtk.h +++ b/drivers/bluetooth/btmtk.h @@ -21,6 +21,9 @@ #define MT7921_DLSTATUS 0x7c053c10 #define BT_DL_STATE BIT(1) +#define MTK_COREDUMP_SIZE (1024 * 1000) +#define MTK_COREDUMP_END "coredump end" + enum { BTMTK_WMT_PATCH_DWNLD = 0x1, BTMTK_WMT_TEST = 0x2, @@ -119,12 +122,20 @@ struct btmtk_hci_wmt_params { u32 *status; }; +struct btmtk_coredump_info { + const char *driver_name; + u32 dev_id; + u32 fw_version; + int state; +}; + typedef int (*wmt_cmd_sync_func_t)(struct hci_dev *, struct btmtk_hci_wmt_params *); typedef int (*btmtk_reset_sync_func_t)(struct hci_dev *, void *); struct btmtk_data { + struct btmtk_coredump_info cd_info; btmtk_reset_sync_func_t reset_sync; }; @@ -139,6 +150,11 @@ 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, 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, @@ -162,4 +178,15 @@ 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, u32 dev_id, 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 034edd8ad777..1c2a0cbcf62e 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -3035,6 +3035,10 @@ static int btusb_mtk_setup(struct hci_dev *hdev) } btmtk_data->reset_sync = btusb_mtk_reset_work; + err = btmtk_register_coredump(hdev, dev_id, btusb_driver.name, + fw_version); + if (err < 0) + bt_dev_err(hdev, "Failed to register coredump (%d)", err); switch (dev_id) { case 0x7663: @@ -3189,6 +3193,7 @@ 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 */ @@ -3196,6 +3201,15 @@ 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 */