From patchwork Wed Nov 13 03:52:33 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kai-Heng Feng X-Patchwork-Id: 1193976 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.ubuntu.com (client-ip=91.189.94.19; helo=huckleberry.canonical.com; envelope-from=kernel-team-bounces@lists.ubuntu.com; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=canonical.com Received: from huckleberry.canonical.com (huckleberry.canonical.com [91.189.94.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47CW0f3rYbz9sNT; Wed, 13 Nov 2019 14:52:50 +1100 (AEDT) Received: from localhost ([127.0.0.1] helo=huckleberry.canonical.com) by huckleberry.canonical.com with esmtp (Exim 4.86_2) (envelope-from ) id 1iUji2-0000mz-TQ; Wed, 13 Nov 2019 03:52:46 +0000 Received: from youngberry.canonical.com ([91.189.89.112]) by huckleberry.canonical.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1iUji0-0000mE-95 for kernel-team@lists.ubuntu.com; Wed, 13 Nov 2019 03:52:44 +0000 Received: from 61-220-137-37.hinet-ip.hinet.net ([61.220.137.37] helo=localhost) by youngberry.canonical.com with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1iUjhz-00085i-JI for kernel-team@lists.ubuntu.com; Wed, 13 Nov 2019 03:52:44 +0000 From: Kai-Heng Feng To: kernel-team@lists.ubuntu.com Subject: [Unstable] [PATCH 1/1] r8152: Add macpassthru support for ThinkPad Thunderbolt 3 Dock Gen 2 Date: Wed, 13 Nov 2019 11:52:33 +0800 Message-Id: <20191113035233.1942-3-kai.heng.feng@canonical.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191113035233.1942-1-kai.heng.feng@canonical.com> References: <20191113035233.1942-1-kai.heng.feng@canonical.com> X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" BugLink: https://bugs.launchpad.net/bugs/1827961 ThinkPad Thunderbolt 3 Dock Gen 2 is another docking station that uses RTL8153 based USB ethernet. The device supports macpassthru, but it failed to pass the test of -AD, -BND and -BD. Simply bypass these tests since the device supports this feature just fine. Also the ACPI objects have some differences between Dell's and Lenovo's, so make those ACPI infos no longer hardcoded. BugLink: https://bugs.launchpad.net/bugs/1827961 Signed-off-by: Kai-Heng Feng Acked-by: Hayes Wang Signed-off-by: David S. Miller (cherry picked from commit 9647722befbedcd6735e00655ffec392c05f0c56 linux-next) Signed-off-by: Kai-Heng Feng Acked-by: Andrea Righi --- drivers/net/usb/cdc_ether.c | 7 +++++ drivers/net/usb/r8152.c | 58 +++++++++++++++++++++++++------------ 2 files changed, 46 insertions(+), 19 deletions(-) diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c index fe630438f67b..0cdb2ce47645 100644 --- a/drivers/net/usb/cdc_ether.c +++ b/drivers/net/usb/cdc_ether.c @@ -766,6 +766,13 @@ static const struct usb_device_id products[] = { .driver_info = 0, }, +/* ThinkPad Thunderbolt 3 Dock Gen 2 (based on Realtek RTL8153) */ +{ + USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3082, USB_CLASS_COMM, + USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), + .driver_info = 0, +}, + /* Lenovo Thinkpad USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */ { USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x7205, USB_CLASS_COMM, diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index d4a95b50bda6..014655ca37f2 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -622,6 +622,7 @@ enum rtl8152_flags { SCHEDULE_TASKLET, GREEN_ETHERNET, DELL_TB_RX_AGG_BUG, + LENOVO_MACPASSTHRU, }; /* Define these values to match your device */ @@ -1222,38 +1223,52 @@ static int vendor_mac_passthru_addr_read(struct r8152 *tp, struct sockaddr *sa) int ret = -EINVAL; u32 ocp_data; unsigned char buf[6]; - - /* test for -AD variant of RTL8153 */ - ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0); - if ((ocp_data & AD_MASK) == 0x1000) { - /* test for MAC address pass-through bit */ - ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, EFUSE); - if ((ocp_data & PASS_THRU_MASK) != 1) { - netif_dbg(tp, probe, tp->netdev, - "No efuse for RTL8153-AD MAC pass through\n"); - return -ENODEV; - } + char *mac_obj_name; + acpi_object_type mac_obj_type; + int mac_strlen; + + if (test_bit(LENOVO_MACPASSTHRU, &tp->flags)) { + mac_obj_name = "\\MACA"; + mac_obj_type = ACPI_TYPE_STRING; + mac_strlen = 0x16; } else { - /* test for RTL8153-BND and RTL8153-BD */ - ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_1); - if ((ocp_data & BND_MASK) == 0 && (ocp_data & BD_MASK) == 0) { - netif_dbg(tp, probe, tp->netdev, - "Invalid variant for MAC pass through\n"); - return -ENODEV; + /* test for -AD variant of RTL8153 */ + ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0); + if ((ocp_data & AD_MASK) == 0x1000) { + /* test for MAC address pass-through bit */ + ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, EFUSE); + if ((ocp_data & PASS_THRU_MASK) != 1) { + netif_dbg(tp, probe, tp->netdev, + "No efuse for RTL8153-AD MAC pass through\n"); + return -ENODEV; + } + } else { + /* test for RTL8153-BND and RTL8153-BD */ + ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_1); + if ((ocp_data & BND_MASK) == 0 && (ocp_data & BD_MASK) == 0) { + netif_dbg(tp, probe, tp->netdev, + "Invalid variant for MAC pass through\n"); + return -ENODEV; + } } + + mac_obj_name = "\\_SB.AMAC"; + mac_obj_type = ACPI_TYPE_BUFFER; + mac_strlen = 0x17; } /* returns _AUXMAC_#AABBCCDDEEFF# */ - status = acpi_evaluate_object(NULL, "\\_SB.AMAC", NULL, &buffer); + status = acpi_evaluate_object(NULL, mac_obj_name, NULL, &buffer); obj = (union acpi_object *)buffer.pointer; if (!ACPI_SUCCESS(status)) return -ENODEV; - if (obj->type != ACPI_TYPE_BUFFER || obj->string.length != 0x17) { + if (obj->type != mac_obj_type || obj->string.length != mac_strlen) { netif_warn(tp, probe, tp->netdev, "Invalid buffer for pass-thru MAC addr: (%d, %d)\n", obj->type, obj->string.length); goto amacout; } + if (strncmp(obj->string.pointer, "_AUXMAC_#", 9) != 0 || strncmp(obj->string.pointer + 0x15, "#", 1) != 0) { netif_warn(tp, probe, tp->netdev, @@ -5632,6 +5647,10 @@ static int rtl8152_probe(struct usb_interface *intf, netdev->hw_features &= ~NETIF_F_RXCSUM; } + if (le16_to_cpu(udev->descriptor.idVendor) == VENDOR_ID_LENOVO && + le16_to_cpu(udev->descriptor.idProduct) == 0x3082) + set_bit(LENOVO_MACPASSTHRU, &tp->flags); + if (le16_to_cpu(udev->descriptor.bcdDevice) == 0x3011 && udev->serial && (!strcmp(udev->serial, "000001000000") || !strcmp(udev->serial, "000002000000"))) { dev_info(&udev->dev, "Dell TB16 Dock, disable RX aggregation"); @@ -5752,6 +5771,7 @@ static const struct usb_device_id rtl8152_table[] = { {REALTEK_USB_DEVICE(VENDOR_ID_LENOVO, 0x304f)}, {REALTEK_USB_DEVICE(VENDOR_ID_LENOVO, 0x3062)}, {REALTEK_USB_DEVICE(VENDOR_ID_LENOVO, 0x3069)}, + {REALTEK_USB_DEVICE(VENDOR_ID_LENOVO, 0x3082)}, {REALTEK_USB_DEVICE(VENDOR_ID_LENOVO, 0x7205)}, {REALTEK_USB_DEVICE(VENDOR_ID_LENOVO, 0x720c)}, {REALTEK_USB_DEVICE(VENDOR_ID_LENOVO, 0x7214)},