From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EDD84C433DF for ; Mon, 10 Aug 2020 19:28:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C607A2080C for ; Mon, 10 Aug 2020 19:28:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597087684; bh=15qDq60fpjZ7HW0bZaWJ+geijTtQUm7ianQRg3nvz3w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=FEYyN/PTBfPEYBzmLBcDAb3PMjI8AbkgrbHysb+ZRZcHEMYBmnH3Nj5Bgxp0bdFvl Cr+NQ3Wv2QTm8M15NaSDhnj90H/e9Bn0M0ekSxnNDFI/PRbzNRST3IAXUyPHmpQc5Y vkt6DvR50DOtkVHNDpPVoy6JATpz9zlmN/nduGK4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728564AbgHJT2A (ORCPT ); Mon, 10 Aug 2020 15:28:00 -0400 Received: from mail.kernel.org ([198.145.29.99]:39638 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729236AbgHJTLU (ORCPT ); Mon, 10 Aug 2020 15:11:20 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BCF2B20885; Mon, 10 Aug 2020 19:11:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597086679; bh=15qDq60fpjZ7HW0bZaWJ+geijTtQUm7ianQRg3nvz3w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=J2x1NPFUqtMDmyv+ggKk38bvT/3wnkNlk1KEJDjeZRW5CvWHl3euiPceSptJ/x+qN hmskQr28qqd2EmG3+4RnjM7VUgzJekGUaF+yQbjjaivdewkOsRLamtPjeu3t+82u2r e5IkpNVazwjsoJ8v1FNk2xCOEmBt41RTjSxjy+AY= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Venkata Lakshmi Narayana Gubba , Marcel Holtmann , Sasha Levin , linux-bluetooth@vger.kernel.org Subject: [PATCH AUTOSEL 5.7 37/60] Bluetooth: hci_qca: Bug fixes for SSR Date: Mon, 10 Aug 2020 15:10:05 -0400 Message-Id: <20200810191028.3793884-37-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200810191028.3793884-1-sashal@kernel.org> References: <20200810191028.3793884-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Venkata Lakshmi Narayana Gubba [ Upstream commit 3344537f614b966f726c1ec044d1c70a8cabe178 ] 1.During SSR for command time out if BT SoC goes to inresponsive state, power cycling of BT SoC was not happening. Given the fix by sending hw error event to reset the BT SoC. 2.If SSR is triggered then ignore the transmit data requests to BT SoC until SSR is completed. Signed-off-by: Venkata Lakshmi Narayana Gubba Signed-off-by: Marcel Holtmann Signed-off-by: Sasha Levin --- drivers/bluetooth/hci_qca.c | 40 +++++++++++++++++++++++++++++++++---- 1 file changed, 36 insertions(+), 4 deletions(-) diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index 0b1036e5e963c..14e4d2eaf8959 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -71,7 +71,8 @@ enum qca_flags { QCA_DROP_VENDOR_EVENT, QCA_SUSPENDING, QCA_MEMDUMP_COLLECTION, - QCA_HW_ERROR_EVENT + QCA_HW_ERROR_EVENT, + QCA_SSR_TRIGGERED }; @@ -854,6 +855,13 @@ static int qca_enqueue(struct hci_uart *hu, struct sk_buff *skb) BT_DBG("hu %p qca enq skb %p tx_ibs_state %d", hu, skb, qca->tx_ibs_state); + if (test_bit(QCA_SSR_TRIGGERED, &qca->flags)) { + /* As SSR is in progress, ignore the packets */ + bt_dev_dbg(hu->hdev, "SSR is in progress"); + kfree_skb(skb); + return 0; + } + /* Prepend skb with frame type */ memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1); @@ -1085,6 +1093,7 @@ static int qca_controller_memdump_event(struct hci_dev *hdev, struct hci_uart *hu = hci_get_drvdata(hdev); struct qca_data *qca = hu->priv; + set_bit(QCA_SSR_TRIGGERED, &qca->flags); skb_queue_tail(&qca->rx_memdump_q, skb); queue_work(qca->workqueue, &qca->ctrl_memdump_evt); @@ -1445,6 +1454,7 @@ static void qca_hw_error(struct hci_dev *hdev, u8 code) struct qca_memdump_data *qca_memdump = qca->qca_memdump; char *memdump_buf = NULL; + set_bit(QCA_SSR_TRIGGERED, &qca->flags); set_bit(QCA_HW_ERROR_EVENT, &qca->flags); bt_dev_info(hdev, "mem_dump_status: %d", qca->memdump_state); @@ -1489,10 +1499,30 @@ static void qca_cmd_timeout(struct hci_dev *hdev) struct hci_uart *hu = hci_get_drvdata(hdev); struct qca_data *qca = hu->priv; - if (qca->memdump_state == QCA_MEMDUMP_IDLE) + set_bit(QCA_SSR_TRIGGERED, &qca->flags); + if (qca->memdump_state == QCA_MEMDUMP_IDLE) { + set_bit(QCA_MEMDUMP_COLLECTION, &qca->flags); qca_send_crashbuffer(hu); - else - bt_dev_info(hdev, "Dump collection is in process"); + qca_wait_for_dump_collection(hdev); + } else if (qca->memdump_state == QCA_MEMDUMP_COLLECTING) { + /* Let us wait here until memory dump collected or + * memory dump timer expired. + */ + bt_dev_info(hdev, "waiting for dump to complete"); + qca_wait_for_dump_collection(hdev); + } + + mutex_lock(&qca->hci_memdump_lock); + if (qca->memdump_state != QCA_MEMDUMP_COLLECTED) { + qca->memdump_state = QCA_MEMDUMP_TIMEOUT; + if (!test_bit(QCA_HW_ERROR_EVENT, &qca->flags)) { + /* Inject hw error event to reset the device + * and driver. + */ + hci_reset_dev(hu->hdev); + } + } + mutex_unlock(&qca->hci_memdump_lock); } static int qca_wcn3990_init(struct hci_uart *hu) @@ -1603,6 +1633,8 @@ static int qca_setup(struct hci_uart *hu) if (ret) return ret; + clear_bit(QCA_SSR_TRIGGERED, &qca->flags); + if (qca_is_wcn399x(soc_type)) { set_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hdev->quirks); -- 2.25.1