From patchwork Tue Jul 27 23:51:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tedd Ho-Jeong An X-Patchwork-Id: 12404677 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 53724C4320E for ; Tue, 27 Jul 2021 23:51:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 392A260FD8 for ; Tue, 27 Jul 2021 23:51:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233449AbhG0Xvs (ORCPT ); Tue, 27 Jul 2021 19:51:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37208 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233412AbhG0Xvp (ORCPT ); Tue, 27 Jul 2021 19:51:45 -0400 Received: from mail-pj1-x102f.google.com (mail-pj1-x102f.google.com [IPv6:2607:f8b0:4864:20::102f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AA720C061757 for ; Tue, 27 Jul 2021 16:51:44 -0700 (PDT) Received: by mail-pj1-x102f.google.com with SMTP id mz5-20020a17090b3785b0290176ecf64922so7223234pjb.3 for ; Tue, 27 Jul 2021 16:51:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ylIJAmp+yr1bvyYwwG8PQSq7oO8H0eUvt5uuIq7+q+4=; b=Oi5Ojwywb/uI7I2MdJPBNyXegskfjr58cAFmnL7qzzgLXUj6WfAyM5jyS53YduERYs 5RciH5I8gw0wJW3hkagK44q0mV9TwArBNYEtiCPGhcdutnuG3jJMMIZZ/lqYDTkdeOiB qFydUwhRwphtXTLQ759ajUGZPl+J6u4OIk0e8+Czb5+ggefyavnKvPGEzKRox6NNNAv2 Gp476CEEek5Y3hlYBBDkFQVEnYLJLeh9SYIfSfH86L6sddt4VHS8wau+4BMEMwU0M+RC jrCaHgSqPz0jsP7bR8zqsRzaN6trvkSRDUqAvIk59N9gRFi1uWjlh3IV/yKAvukar0yY AIDQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ylIJAmp+yr1bvyYwwG8PQSq7oO8H0eUvt5uuIq7+q+4=; b=el6IIfa27lAnTKD1AmZZiC2oqLA/BAQL8o4HZ05oFXLx5T4FwxGroM3foToLjltOIW H7G4E9h2K93Q+F9Gs2lPmDDzB9xBL3CJHZerHCWqD6BB8SKQ1LobG0Hn8lbog7E7zsU0 HLaM9PwreZPtRntnUsVp7ib/22rF7Dh2P9bQV3yLq2OULiC6KAoVGZ5CRzDxnPqObhRB G2DoJXwZwdCicHTGgx0Z0Yoo5mDCCwNxU4uME8ioTZZEEfi4PtlZdoij6yOgoV8RN/8c panOd3dtcwYw7PHiMEMc0v5Qr6WQjOTPmYMZpjLZt6Lx8Y7cFkveT3R+x5HesWmBqpzT B7/g== X-Gm-Message-State: AOAM530c/8ITnZQtKh0ACkxWKbRxHOYHJflhDoiCZF0FPi1xJJkx8n4B PkNIl9n/c9DatXNqaPRGLm822cqljsw= X-Google-Smtp-Source: ABdhPJwp3XIOG5Out2IzQUk0rJmFWo0d7PhN3F8EuFc8dNzt4NliRDhj7dCheDjuAVwLtIaiDFjKxw== X-Received: by 2002:a17:902:e843:b029:129:acb4:2464 with SMTP id t3-20020a170902e843b0290129acb42464mr20736770plg.77.1627429904036; Tue, 27 Jul 2021 16:51:44 -0700 (PDT) Received: from localhost.localdomain ([2601:1c0:6a01:d830::7cb2]) by smtp.gmail.com with ESMTPSA id y9sm1545332pfq.199.2021.07.27.16.51.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Jul 2021 16:51:43 -0700 (PDT) From: Tedd Ho-Jeong An To: linux-bluetooth@vger.kernel.org Cc: Tedd Ho-Jeong An Subject: [RFC PATCH v4 05/11] Bluetooth: btintel: Fix the first HCI command not work with ROM device. Date: Tue, 27 Jul 2021 16:51:21 -0700 Message-Id: <20210727235127.173149-6-hj.tedd.an@gmail.com> X-Mailer: git-send-email 2.26.3 In-Reply-To: <20210727235127.173149-1-hj.tedd.an@gmail.com> References: <20210727235127.173149-1-hj.tedd.an@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Tedd Ho-Jeong An The some legacy ROM controllers have a bug with the first HCI command sent to it returning number of completed commands as zero, which would stall the command processing in the Bluetooth core. As a workaround, send HCI Rest command first which will reset the controller to fix the issue. Signed-off-by: Tedd Ho-Jeong An --- drivers/bluetooth/btintel.c | 21 +++++++++++++++++++++ drivers/bluetooth/btintel.h | 1 + drivers/bluetooth/btusb.c | 16 ++++++++++++++-- 3 files changed, 36 insertions(+), 2 deletions(-) diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c index bf0ad05b80fe..65ecf2ae9a10 100644 --- a/drivers/bluetooth/btintel.c +++ b/drivers/bluetooth/btintel.c @@ -1659,6 +1659,7 @@ static int btintel_legacy_rom_setup(struct hci_dev *hdev, int btintel_setup_combined(struct hci_dev *hdev) { + struct btintel_data *intel = hci_get_priv(hdev); const u8 param[1] = { 0xFF }; struct intel_version ver; struct intel_version_tlv ver_tlv; @@ -1667,6 +1668,26 @@ int btintel_setup_combined(struct hci_dev *hdev) BT_DBG("%s", hdev->name); + /* The some controllers have a bug with the first HCI command sent to it + * returning number of completed commands as zero. This would stall the + * command processing in the Bluetooth core. + * + * As a workaround, send HCI Reset command first which will reset the + * number of completed commands and allow normal command processing + * from now on. + */ + if (test_bit(INTEL_BROKEN_READ_VERSION, &intel->flags)) { + skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, + HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + bt_dev_err(hdev, + "sending initial HCI reset failed (%ld)", + PTR_ERR(skb)); + return PTR_ERR(skb); + } + kfree_skb(skb); + } + /* Starting from TyP device, the command parameter and response are * changed even though the OCF for HCI_Intel_Read_Version command * remains same. The legacy devices can handle even if the diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h index df7aa30142b4..29b678364a79 100644 --- a/drivers/bluetooth/btintel.h +++ b/drivers/bluetooth/btintel.h @@ -143,6 +143,7 @@ struct intel_debug_features { #define INTEL_FIRMWARE_LOADED 2 #define INTEL_FIRMWARE_FAILED 3 #define INTEL_BOOTING 4 +#define INTEL_BROKEN_READ_VERSION 5 struct btintel_data { unsigned long flags; diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 4cd49a758bb0..28ad13d6c032 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -62,6 +62,7 @@ static struct usb_driver btusb_driver; #define BTUSB_QCA_WCN6855 0x1000000 #define BTUSB_INTEL_NEWGEN 0x2000000 #define BTUSB_INTEL_COMBINED 0x4000000 +#define BTUSB_INTEL_BROKEN_READ_VERSION 0x8000000 static const struct usb_device_id btusb_table[] = { /* Generic Bluetooth USB device */ @@ -376,11 +377,14 @@ static const struct usb_device_id blacklist_table[] = { BTUSB_WIDEBAND_SPEECH | BTUSB_VALID_LE_STATES }, { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR }, - { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED }, - { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED }, + { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED | + BTUSB_INTEL_BROKEN_READ_VERSION }, + { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED | + BTUSB_INTEL_BROKEN_READ_VERSION }, { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW | BTUSB_WIDEBAND_SPEECH }, { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED | + BTUSB_INTEL_BROKEN_READ_VERSION | BTUSB_WIDEBAND_SPEECH }, { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW | BTUSB_WIDEBAND_SPEECH | @@ -4221,6 +4225,11 @@ static int btusb_probe(struct usb_interface *intf, priv_size = 0; + if (id->driver_info & BTUSB_INTEL_COMBINED) { + /* Allocate extra space for Intel device */ + priv_size += sizeof(struct btintel_data); + } + if (id->driver_info & BTUSB_INTEL_NEW) { data->recv_event = btusb_recv_event_intel; data->recv_bulk = btusb_recv_bulk_intel; @@ -4315,6 +4324,9 @@ static int btusb_probe(struct usb_interface *intf, set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks); + + if (id->driver_info & BTUSB_INTEL_BROKEN_READ_VERSION) + btintel_set_flags(hdev, INTEL_BROKEN_READ_VERSION); } if (id->driver_info & BTUSB_INTEL_NEW) {