From patchwork Sat Oct 3 08:02:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kiran K X-Patchwork-Id: 267380 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=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 49E88C4363D for ; Sat, 3 Oct 2020 08:03:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F418D206CD for ; Sat, 3 Oct 2020 08:03:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="lCv9SXIF" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725766AbgJCIDj (ORCPT ); Sat, 3 Oct 2020 04:03:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47548 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725601AbgJCIDj (ORCPT ); Sat, 3 Oct 2020 04:03:39 -0400 Received: from mail-pf1-x442.google.com (mail-pf1-x442.google.com [IPv6:2607:f8b0:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5E864C0613D0 for ; Sat, 3 Oct 2020 01:03:35 -0700 (PDT) Received: by mail-pf1-x442.google.com with SMTP id b124so3052711pfg.13 for ; Sat, 03 Oct 2020 01:03:35 -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; bh=VHq76mflUrpLLMYIX0Ha0byfzDPuu1c5EYRaHHK8yt0=; b=lCv9SXIFEofhmZm1EnibU1ine+2gp0qwmLfOQUt2Kbz6mRKF0XQAaibctgNxXWiLfJ 6KctJEdnNykqoRA2zPo0NgTle8Afn6bnwjGTwTGdXFHWsIxdG34Qu7N47JJ7h0fyQVzR HsHuqN17SxkMP6YICSAEhKBVpkJ1U9v/YxkCt1HWWI2rhJPhhz4saU4211/1rAfkwIpQ J+onFSWT6SZYqTIW1/leXVGNa1lnzSMFXIlqJEEMK3nQ8h4itkOTcMFozKRXS18hvKaS UUcdS2ppE+NNI/XhcVM3AWs+VGUf9VDKLieiQfMsFN6tsyK2oTpx2zdJXr2JtnFuEghg w0nA== 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; bh=VHq76mflUrpLLMYIX0Ha0byfzDPuu1c5EYRaHHK8yt0=; b=LeTM+kLbnw/9KiMq1BoU2BgXby8JLtbyRpV/oennomoJ5AfV7divmWcAgWgiQUkS3I 6JsNKRDuDxPBCA1P2retpV+nBHLFYvo7Txj3ZQUROvB/91zZPXKRgyVxrOkcZ+uj9x85 bkHLoq7EmV5to8DFpDyaFkBWkf6oubpVQjbOdvsoL2N77eSN4fYRt5RYEIBp9BGeRa3G +KLX/FpQ1x5omQaap9y99RXIQRrTYlue1Ck48OaxVebclVlAhaVYxDyPod2B4pGt7jXm dmTc9YWmkTAq2ATKs3pv8nbbUFRSbHZSUDty4M1uxBN2YDpCrHUKwAN3Jl/+DKGyTauC qR7w== X-Gm-Message-State: AOAM5323bUQR6XNOH1DcYdJmK0oWp6T4gkWn5Tqx6Lw2I3aTRFVqKsKm 2QeCva7yDZtZI9BD2tZi/koQ2GFtzfm9Vg== X-Google-Smtp-Source: ABdhPJz4kCn2oAvJYL/VGJ0UnaE2CYYPn3SvZvgfgA2qsL5ZS/cdpzCROiBBBUftKUQ/wBbN/ABQAw== X-Received: by 2002:a63:ff01:: with SMTP id k1mr5830962pgi.141.1601712214284; Sat, 03 Oct 2020 01:03:34 -0700 (PDT) Received: from localhost.localdomain ([122.171.170.99]) by smtp.gmail.com with ESMTPSA id m14sm4742835pfo.202.2020.10.03.01.03.31 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 03 Oct 2020 01:03:33 -0700 (PDT) From: Kiran K X-Google-Original-From: Kiran K To: linux-bluetooth@vger.kernel.org Cc: sathish.narasimman@intel.com, chethan.tumkur.narayan@intel.com, ravishankar.srivatsa@intel.com, kiraank@gmail.com, Kiran K , Amit K Bag , Raghuram Hegde Subject: [PATCH v5 2/2] Bluetooth: btintel: Add *setup* function for new generation Intel controllers Date: Sat, 3 Oct 2020 13:32:59 +0530 Message-Id: <1601712179-13540-2-git-send-email-kiran.k@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1601712179-13540-1-git-send-email-kiran.k@intel.com> References: <1601712179-13540-1-git-send-email-kiran.k@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org 1) add a helper function to download firmware 2) add a function to construct firmware / ddc file name 3) define *setup* and hook it up for new genertion Intel controllers Signed-off-by: Kiran K Signed-off-by: Amit K Bag Signed-off-by: Raghuram Hegde Reviewed-by: Sathish Narasimman Reviewed-by: Chethan T N Reviewed-by: Srivatsa Ravishankar --- Changes in v5: * Remove BTUSB_INTEL_NEWGEN and use usb vid/pid combination to identify controller type Changes in v4: * Rebase patchset * Fix indentation issues * make btusb_setup_intel_new_get_fw_name to return void as return value is not getting used Changes in v3: * Combine the two patches in v2 series to one to avoid compiler warnings reported by kernel bot (lkp) Changed in v2: * Fix typo in commit message drivers/bluetooth/btintel.h | 6 + drivers/bluetooth/btusb.c | 318 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 324 insertions(+) diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h index 09346ae..c4e28a8 100644 --- a/drivers/bluetooth/btintel.h +++ b/drivers/bluetooth/btintel.h @@ -132,6 +132,12 @@ struct intel_debug_features { __u8 page1[16]; } __packed; +#define INTEL_HW_PLATFORM(cnvx_bt) ((u8)(((cnvx_bt) & 0x0000ff00) >> 8)) +#define INTEL_HW_VARIANT(cnvx_bt) ((u8)(((cnvx_bt) & 0x003f0000) >> 16)) +#define INTEL_CNVX_TOP_TYPE(cnvx_top) ((cnvx_top) & 0x00000fff) +#define INTEL_CNVX_TOP_STEP(cnvx_top) (((cnvx_top) & 0x0f000000) >> 24) +#define INTEL_CNVX_TOP_PACK_SWAB(t, s) __swab16(((__u16)(((t) << 4) | (s)))) + #if IS_ENABLED(CONFIG_BT_INTEL) int btintel_check_bdaddr(struct hci_dev *hdev); diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index e2cd78d..635229c 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2359,6 +2359,181 @@ static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver, return true; } +static void btusb_setup_intel_newgen_get_fw_name(const struct intel_version_tlv *ver_tlv, + char *fw_name, size_t len, + const char *suffix) +{ + /* The firmware file name for new generation controllers will be + * ibt-- + */ + snprintf(fw_name, len, "intel/ibt-%04x-%04x.%s", + INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver_tlv->cnvi_top), + INTEL_CNVX_TOP_STEP(ver_tlv->cnvi_top)), + INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver_tlv->cnvr_top), + INTEL_CNVX_TOP_STEP(ver_tlv->cnvr_top)), + suffix); +} + +static int btusb_intel_download_firmware_newgen(struct hci_dev *hdev, + struct intel_version_tlv *ver, + u32 *boot_param) +{ + const struct firmware *fw; + char fwname[64]; + int err; + struct btusb_data *data = hci_get_drvdata(hdev); + + if (!ver || !boot_param) + return -EINVAL; + + /* The hardware platform number has a fixed value of 0x37 and + * for now only accept this single value. + */ + if (INTEL_HW_PLATFORM(ver->cnvi_bt) != 0x37) { + bt_dev_err(hdev, "Unsupported Intel hardware platform (0x%2x)", + INTEL_HW_PLATFORM(ver->cnvi_bt)); + return -EINVAL; + } + + /* The firmware variant determines if the device is in bootloader + * mode or is running operational firmware. The value 0x03 identifies + * the bootloader and the value 0x23 identifies the operational + * firmware. + * + * When the operational firmware is already present, then only + * the check for valid Bluetooth device address is needed. This + * determines if the device will be added as configured or + * unconfigured controller. + * + * It is not possible to use the Secure Boot Parameters in this + * case since that command is only available in bootloader mode. + */ + if (ver->img_type == 0x03) { + clear_bit(BTUSB_BOOTLOADER, &data->flags); + btintel_check_bdaddr(hdev); + return 0; + } + + /* Check for supported iBT hardware variants of this firmware + * loading method. + * + * This check has been put in place to ensure correct forward + * compatibility options when newer hardware variants come along. + */ + switch (INTEL_HW_VARIANT(ver->cnvi_bt)) { + case 0x17: /* TyP */ + case 0x18: /* Slr */ + case 0x19: /* Slr-F */ + break; + default: + bt_dev_err(hdev, "Unsupported Intel hardware variant (0x%x)", + INTEL_HW_VARIANT(ver->cnvi_bt)); + return -EINVAL; + } + + /* If the device is not in bootloader mode, then the only possible + * choice is to return an error and abort the device initialization. + */ + if (ver->img_type != 0x01) { + bt_dev_err(hdev, "Unsupported Intel firmware variant (0x%x)", + ver->img_type); + return -ENODEV; + } + + /* It is required that every single firmware fragment is acknowledged + * with a command complete event. If the boot parameters indicate + * that this bootloader does not send them, then abort the setup. + */ + if (ver->limited_cce != 0x00) { + bt_dev_err(hdev, "Unsupported Intel firmware loading method (0x%x)", + ver->limited_cce); + return -EINVAL; + } + + /* Secure boot engine type should be either 1 (ECDSA) or 0 (RSA) */ + if (ver->sbe_type > 0x01) { + bt_dev_err(hdev, "Unsupported Intel secure boot engine type (0x%x)", + ver->sbe_type); + return -EINVAL; + } + + /* If the OTP has no valid Bluetooth device address, then there will + * also be no valid address for the operational firmware. + */ + if (!bacmp(&ver->otp_bd_addr, BDADDR_ANY)) { + bt_dev_info(hdev, "No device address configured"); + set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks); + } + + btusb_setup_intel_newgen_get_fw_name(ver, fwname, sizeof(fwname), "sfi"); + err = request_firmware(&fw, fwname, &hdev->dev); + if (err < 0) { + bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err); + return err; + } + + bt_dev_info(hdev, "Found device firmware: %s", fwname); + + if (fw->size < 644) { + bt_dev_err(hdev, "Invalid size of firmware file (%zu)", + fw->size); + err = -EBADF; + goto done; + } + + set_bit(BTUSB_DOWNLOADING, &data->flags); + + /* Start firmware downloading and get boot parameter */ + err = btintel_download_firmware_newgen(hdev, fw, boot_param, + INTEL_HW_VARIANT(ver->cnvi_bt), + ver->sbe_type); + if (err < 0) { + /* When FW download fails, send Intel Reset to retry + * FW download. + */ + btintel_reset_to_bootloader(hdev); + goto done; + } + set_bit(BTUSB_FIRMWARE_LOADED, &data->flags); + + bt_dev_info(hdev, "Waiting for firmware download to complete"); + + /* Before switching the device into operational mode and with that + * booting the loaded firmware, wait for the bootloader notification + * that all fragments have been successfully received. + * + * When the event processing receives the notification, then the + * BTUSB_DOWNLOADING flag will be cleared. + * + * The firmware loading should not take longer than 5 seconds + * and thus just timeout if that happens and fail the setup + * of this device. + */ + err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING, + TASK_INTERRUPTIBLE, + msecs_to_jiffies(5000)); + if (err == -EINTR) { + bt_dev_err(hdev, "Firmware loading interrupted"); + goto done; + } + + if (err) { + bt_dev_err(hdev, "Firmware loading timeout"); + err = -ETIMEDOUT; + btintel_reset_to_bootloader(hdev); + goto done; + } + + if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) { + bt_dev_err(hdev, "Firmware loading failed"); + err = -ENOEXEC; + goto done; + } + +done: + release_firmware(fw); + return err; +} static int btusb_intel_download_firmware(struct hci_dev *hdev, struct intel_version *ver, struct intel_boot_params *params, @@ -2693,6 +2868,135 @@ static int btusb_setup_intel_new(struct hci_dev *hdev) return 0; } +static int btusb_setup_intel_newgen(struct hci_dev *hdev) +{ + struct btusb_data *data = hci_get_drvdata(hdev); + u32 boot_param; + char ddcname[64]; + ktime_t calltime, delta, rettime; + unsigned long long duration; + int err; + struct intel_debug_features features; + struct intel_version_tlv version; + + BT_DBG("%s", hdev->name); + + /* Set the default boot parameter to 0x0 and it is updated to + * SKU specific boot parameter after reading Intel_Write_Boot_Params + * command while downloading the firmware. + */ + boot_param = 0x00000000; + + calltime = ktime_get(); + + /* Read the Intel version information to determine if the device + * is in bootloader mode or if it already has operational firmware + * loaded. + */ + err = btintel_read_version_tlv(hdev, &version); + if (err) { + bt_dev_err(hdev, "Intel Read version failed (%d)", err); + btintel_reset_to_bootloader(hdev); + return err; + } + + btintel_version_info_tlv(hdev, &version); + + err = btusb_intel_download_firmware_newgen(hdev, &version, &boot_param); + if (err) + return err; + + /* check if controller is already having an operational firmware */ + if (version.img_type == 0x03) + goto finish; + + rettime = ktime_get(); + delta = ktime_sub(rettime, calltime); + duration = (unsigned long long)ktime_to_ns(delta) >> 10; + + bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration); + + calltime = ktime_get(); + + set_bit(BTUSB_BOOTING, &data->flags); + + err = btintel_send_intel_reset(hdev, boot_param); + if (err) { + bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err); + btintel_reset_to_bootloader(hdev); + return err; + } + + /* The bootloader will not indicate when the device is ready. This + * is done by the operational firmware sending bootup notification. + * + * Booting into operational firmware should not take longer than + * 1 second. However if that happens, then just fail the setup + * since something went wrong. + */ + bt_dev_info(hdev, "Waiting for device to boot"); + + err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING, + TASK_INTERRUPTIBLE, + msecs_to_jiffies(1000)); + + if (err == -EINTR) { + bt_dev_err(hdev, "Device boot interrupted"); + return -EINTR; + } + + if (err) { + bt_dev_err(hdev, "Device boot timeout"); + btintel_reset_to_bootloader(hdev); + return -ETIMEDOUT; + } + + rettime = ktime_get(); + delta = ktime_sub(rettime, calltime); + duration = (unsigned long long)ktime_to_ns(delta) >> 10; + + bt_dev_info(hdev, "Device booted in %llu usecs", duration); + + clear_bit(BTUSB_BOOTLOADER, &data->flags); + + btusb_setup_intel_newgen_get_fw_name(&version, ddcname, sizeof(ddcname), + "ddc"); + + /* Once the device is running in operational mode, it needs to + * apply the device configuration (DDC) parameters. + * + * The device can work without DDC parameters, so even if it + * fails to load the file, no need to fail the setup. + */ + btintel_load_ddc_config(hdev, ddcname); + + /* Read the Intel supported features and if new exception formats + * supported, need to load the additional DDC config to enable. + */ + btintel_read_debug_features(hdev, &features); + + /* Set DDC mask for available debug features */ + btintel_set_debug_features(hdev, &features); + + /* Read the Intel version information after loading the FW */ + err = btintel_read_version_tlv(hdev, &version); + if (err) + return err; + + btintel_version_info_tlv(hdev, &version); + +finish: + /* Set the event mask for Intel specific vendor events. This enables + * a few extra events that are useful during general operation. It + * does not enable any debugging related events. + * + * The device will function correctly without these events enabled + * and thus no need to fail the setup. + */ + btintel_set_event_mask(hdev, false); + + return 0; +} static int btusb_shutdown_intel(struct hci_dev *hdev) { struct sk_buff *skb; @@ -3977,6 +4281,7 @@ static int btusb_probe(struct usb_interface *intf, case 0x0025: case 0x0026: case 0x0029: + case 0x0032: case 0x0a2b: case 0x0aaa: data->recv_event = btusb_recv_event_intel; @@ -4092,6 +4397,19 @@ static int btusb_probe(struct usb_interface *intf, set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks); break; + case 0x0032: + hdev->manufacturer = 2; + hdev->send = btusb_send_frame_intel; + hdev->setup = btusb_setup_intel_newgen; + hdev->shutdown = btusb_shutdown_intel_new; + hdev->hw_error = btintel_hw_error; + hdev->set_diag = btintel_set_diag; + hdev->set_bdaddr = btintel_set_bdaddr; + hdev->cmd_timeout = btusb_intel_cmd_timeout; + 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); + break; } }