From patchwork Fri Nov 6 09:20:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sathish Narasimman X-Patchwork-Id: 11886437 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=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 D138AC388F2 for ; Fri, 6 Nov 2020 09:15:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 76633208B3 for ; Fri, 6 Nov 2020 09:15:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726589AbgKFJPH (ORCPT ); Fri, 6 Nov 2020 04:15:07 -0500 Received: from mga05.intel.com ([192.55.52.43]:30919 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725868AbgKFJPG (ORCPT ); Fri, 6 Nov 2020 04:15:06 -0500 IronPort-SDR: 2cr2blRLUmDeCd42lAo4tn++BCr3bNw1p3UmI+I4lsOXFJtDQxSDG4fh+eSQTd9RgdaDh59NnI f3jTSRYMP65Q== X-IronPort-AV: E=McAfee;i="6000,8403,9796"; a="254228474" X-IronPort-AV: E=Sophos;i="5.77,456,1596524400"; d="scan'208";a="254228474" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Nov 2020 01:15:05 -0800 IronPort-SDR: 27+GbXJIz6cQOylf48CDCtqQ37u34hlezwpHTdJBHHcdOCy2DkCUxxTSMqPmmRN+r3p2dn6L4b rdf9kxIfGpqg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,456,1596524400"; d="scan'208";a="353309373" Received: from nsathish-latitude-7480.iind.intel.com ([10.224.186.105]) by orsmga008.jf.intel.com with ESMTP; 06 Nov 2020 01:15:03 -0800 From: Sathish Narasimman To: linux-bluetooth@vger.kernel.org Cc: chethan.tumkur.narayan@intel.com, ravishankar.srivatsa@intel.com, Sathish Narasimman Subject: [PATCH] Bluetooth: btintel parse TLV structure Date: Fri, 6 Nov 2020 14:50:24 +0530 Message-Id: <20201106092024.20430-1-sathish.narasimman@intel.com> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Latest intel firmware supports TLV structure in operational mode for intel read version. so made changes accordingly to support both bootloader and operational mode . These changes are only to specific intel bluetooth controller for example ThP, CcP. Signed-off-by: Sathish Narasimman --- drivers/bluetooth/btintel.c | 105 +++++++++++++++++++++++++++--------- drivers/bluetooth/btintel.h | 16 ++++++ drivers/bluetooth/btusb.c | 41 ++++++++++---- 3 files changed, 129 insertions(+), 33 deletions(-) diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c index 88ce5f0ffc4b..67267afc83e1 100644 --- a/drivers/bluetooth/btintel.c +++ b/drivers/bluetooth/btintel.c @@ -401,31 +401,9 @@ void btintel_version_info_tlv(struct hci_dev *hdev, struct intel_version_tlv *ve } EXPORT_SYMBOL_GPL(btintel_version_info_tlv); -int btintel_read_version_tlv(struct hci_dev *hdev, struct intel_version_tlv *version) +static void btintel_parse_tlv(struct sk_buff *skb, + struct intel_version_tlv *version) { - struct sk_buff *skb; - const u8 param[1] = { 0xFF }; - - if (!version) - return -EINVAL; - - skb = __hci_cmd_sync(hdev, 0xfc05, 1, param, HCI_CMD_TIMEOUT); - if (IS_ERR(skb)) { - bt_dev_err(hdev, "Reading Intel version information failed (%ld)", - PTR_ERR(skb)); - return PTR_ERR(skb); - } - - if (skb->data[0]) { - bt_dev_err(hdev, "Intel Read Version command failed (%02x)", - skb->data[0]); - kfree_skb(skb); - return -EIO; - } - - /* Consume Command Complete Status field */ - skb_pull(skb, 1); - /* Event parameters contatin multiple TLVs. Read each of them * and only keep the required data. Also, it use existing legacy * version field like hw_platform, hw_variant, and fw_variant @@ -496,6 +474,85 @@ int btintel_read_version_tlv(struct hci_dev *hdev, struct intel_version_tlv *ver /* consume the current tlv and move to next*/ skb_pull(skb, tlv->len + sizeof(*tlv)); } +} + +int btintel_read_version_new(struct hci_dev *hdev, struct btintel_version *ver) +{ + struct sk_buff *skb; + struct intel_version *version = &ver->ver; + const u8 param[1] = { 0xFF }; + + skb = __hci_cmd_sync(hdev, 0xfc05, 1, param, HCI_CMD_TIMEOUT); + if (IS_ERR(skb)) { + bt_dev_err(hdev, "Reading Intel version info failed (%ld)", + PTR_ERR(skb)); + return PTR_ERR(skb); + } + + if (skb->data[0]) { + bt_dev_err(hdev, "Intel Read Version command failed (%02x)", + skb->data[0]); + kfree_skb(skb); + return -EIO; + } + + /* The new Intel read version is backward compatible for Thp and CcP + * type cards. when the controller is in bootloader mode the controller + * response remains same as old intel_read version. For ThP/CcP cards + * TLV structure supports only during the Operation Mode. The best way + * to differentiate the read_version response is to check the length + * parameter and the first byte of the payload, which is a fixed value. + * After the status parameter if the payload starts with 0x37(This is + * a fixed value) and length of the payload is 10 then it is identified + * as legacy struct intel_version. In the latest firmware the support + * of TLV structure is added during Operational Firmware. + */ + if (skb->len == sizeof(*version) && skb->data[1] == 0x37) { + memcpy(version, skb->data, sizeof(*version)); + ver->tlv_format = false; + goto finish; + } + + /* Consume Command Complete Status field */ + skb_pull(skb, 1); + + ver->tlv_format = true; + + bt_dev_info(hdev, "Parsing TLV Supported intel read version"); + btintel_parse_tlv(skb, &ver->ver_tlv); + +finish: + kfree_skb(skb); + return 0; +} +EXPORT_SYMBOL_GPL(btintel_read_version_new); + +int btintel_read_version_tlv(struct hci_dev *hdev, struct intel_version_tlv *version) +{ + struct sk_buff *skb; + const u8 param[1] = { 0xFF }; + + if (!version) + return -EINVAL; + + skb = __hci_cmd_sync(hdev, 0xfc05, 1, param, HCI_CMD_TIMEOUT); + if (IS_ERR(skb)) { + bt_dev_err(hdev, "Reading Intel version information failed (%ld)", + PTR_ERR(skb)); + return PTR_ERR(skb); + } + + if (skb->data[0]) { + bt_dev_err(hdev, "Intel Read Version command failed (%02x)", + skb->data[0]); + kfree_skb(skb); + return -EIO; + } + + /* Consume Command Complete Status field */ + skb_pull(skb, 1); + + btintel_parse_tlv(skb, version); kfree_skb(skb); return 0; diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h index 09346ae308eb..952da44b79de 100644 --- a/drivers/bluetooth/btintel.h +++ b/drivers/bluetooth/btintel.h @@ -132,6 +132,15 @@ struct intel_debug_features { __u8 page1[16]; } __packed; +struct btintel_version { + bool tlv_format; + union { + struct intel_version ver; /*Legacy Intel read version*/ + struct intel_version_tlv ver_tlv; + }; +} __packed; + +#define INTEL_HW_VARIANT(cnvx_bt) ((u8)(((cnvx_bt) & 0x003f0000) >> 16)) #if IS_ENABLED(CONFIG_BT_INTEL) int btintel_check_bdaddr(struct hci_dev *hdev); @@ -151,6 +160,7 @@ int btintel_set_event_mask(struct hci_dev *hdev, bool debug); int btintel_set_event_mask_mfg(struct hci_dev *hdev, bool debug); int btintel_read_version(struct hci_dev *hdev, struct intel_version *ver); int btintel_read_version_tlv(struct hci_dev *hdev, struct intel_version_tlv *ver); +int btintel_read_version_new(struct hci_dev *hdev, struct btintel_version *ver); struct regmap *btintel_regmap_init(struct hci_dev *hdev, u16 opcode_read, u16 opcode_write); @@ -248,6 +258,12 @@ static inline int btintel_read_version_tlv(struct hci_dev *hdev, return -EOPNOTSUPP; } +static inline int btintel_read_version_new(struct hci_dev *hdev, + struct btintel_version *ver) +{ + return -EOPNOTSUPP; +} + static inline struct regmap *btintel_regmap_init(struct hci_dev *hdev, u16 opcode_read, u16 opcode_write) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 1005b6e8ff74..c63bc8a0c84f 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2554,7 +2554,8 @@ static int btusb_intel_download_firmware(struct hci_dev *hdev, static int btusb_setup_intel_new(struct hci_dev *hdev) { struct btusb_data *data = hci_get_drvdata(hdev); - struct intel_version ver; + struct btintel_version bt_ver; + u8 hw_variant; struct intel_boot_params params; u32 boot_param; char ddcname[64]; @@ -2577,19 +2578,33 @@ static int btusb_setup_intel_new(struct hci_dev *hdev) * is in bootloader mode or if it already has operational firmware * loaded. */ - err = btintel_read_version(hdev, &ver); + err = btintel_read_version_new(hdev, &bt_ver); if (err) { bt_dev_err(hdev, "Intel Read version failed (%d)", err); btintel_reset_to_bootloader(hdev); return err; } - err = btusb_intel_download_firmware(hdev, &ver, ¶ms, &boot_param); + /* If TLV format is supported then it is in Operational Firmware. TLV + * structure is supported only in operational mode in latest Firmware. + */ + if (bt_ver.tlv_format && bt_ver.ver_tlv.img_type == 0x03) { + btintel_version_info_tlv(hdev, &bt_ver.ver_tlv); + clear_bit(BTUSB_BOOTLOADER, &data->flags); + goto finish; + } + + err = btusb_intel_download_firmware(hdev, &bt_ver.ver, ¶ms, + &boot_param); if (err) return err; - /* controller is already having an operational firmware */ - if (ver.fw_variant == 0x23) + /* In case if old firmware is used, it should be backward compatible + * to check for operational firmware. only on latest firmware the + * support for TLV structure is added. so check for tlv is not + * required here. + */ + if (bt_ver.ver.fw_variant == 0x23) goto finish; rettime = ktime_get(); @@ -2641,7 +2656,7 @@ static int btusb_setup_intel_new(struct hci_dev *hdev) clear_bit(BTUSB_BOOTLOADER, &data->flags); - err = btusb_setup_intel_new_get_fw_name(&ver, ¶ms, ddcname, + err = btusb_setup_intel_new_get_fw_name(&bt_ver.ver, ¶ms, ddcname, sizeof(ddcname), "ddc"); if (!err) { @@ -2665,17 +2680,25 @@ static int btusb_setup_intel_new(struct hci_dev *hdev) btintel_set_debug_features(hdev, &features); /* Read the Intel version information after loading the FW */ - err = btintel_read_version(hdev, &ver); + err = btintel_read_version_new(hdev, &bt_ver); if (err) return err; - btintel_version_info(hdev, &ver); + if (bt_ver.tlv_format) + btintel_version_info_tlv(hdev, &bt_ver.ver_tlv); + else + btintel_version_info(hdev, &bt_ver.ver); finish: /* All Intel controllers that support the Microsoft vendor * extension are using 0xFC1E for VsMsftOpCode. */ - switch (ver.hw_variant) { + if (!bt_ver.tlv_format) + hw_variant = bt_ver.ver.hw_variant; + else + hw_variant = INTEL_HW_VARIANT(bt_ver.ver_tlv.cnvi_bt); + + switch (hw_variant) { case 0x12: /* ThP */ hci_set_msft_opcode(hdev, 0xFC1E); break;