From patchwork Fri Apr 21 20:38:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weitao Wang X-Patchwork-Id: 13219946 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6C178C77B75 for ; Fri, 21 Apr 2023 12:39:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231452AbjDUMjU (ORCPT ); Fri, 21 Apr 2023 08:39:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41178 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232090AbjDUMjF (ORCPT ); Fri, 21 Apr 2023 08:39:05 -0400 Received: from mx2.zhaoxin.com (mx2.zhaoxin.com [203.110.167.99]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5C3BCCC36 for ; Fri, 21 Apr 2023 05:39:01 -0700 (PDT) X-ASG-Debug-ID: 1682080734-1eb14e6388386f0004-YVMibp Received: from ZXSHMBX1.zhaoxin.com (ZXSHMBX1.zhaoxin.com [10.28.252.163]) by mx2.zhaoxin.com with ESMTP id VSV32zGVYm9kDjkW (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO); Fri, 21 Apr 2023 20:38:56 +0800 (CST) X-Barracuda-Envelope-From: WeitaoWang-oc@zhaoxin.com X-Barracuda-RBL-Trusted-Forwarder: 10.28.252.163 Received: from zxbjmbx1.zhaoxin.com (10.29.252.163) by ZXSHMBX1.zhaoxin.com (10.28.252.163) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.16; Fri, 21 Apr 2023 20:38:55 +0800 Received: from L440.zhaoxin.com (10.29.8.21) by zxbjmbx1.zhaoxin.com (10.29.252.163) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.16; Fri, 21 Apr 2023 20:38:54 +0800 X-Barracuda-RBL-Trusted-Forwarder: 10.28.252.163 From: Weitao Wang X-Barracuda-RBL-Trusted-Forwarder: 10.29.252.163 To: , , , CC: , Subject: [PATCH v2 3/4] xhci: Show zhaoxin xHCI root hub speed correctly Date: Sat, 22 Apr 2023 04:38:52 +0800 X-ASG-Orig-Subj: [PATCH v2 3/4] xhci: Show zhaoxin xHCI root hub speed correctly Message-ID: <20230421203853.387210-4-WeitaoWang-oc@zhaoxin.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20230421203853.387210-1-WeitaoWang-oc@zhaoxin.com> References: <20230421203853.387210-1-WeitaoWang-oc@zhaoxin.com> MIME-Version: 1.0 X-Originating-IP: [10.29.8.21] X-ClientProxiedBy: zxbjmbx1.zhaoxin.com (10.29.252.163) To zxbjmbx1.zhaoxin.com (10.29.252.163) X-Barracuda-Connect: ZXSHMBX1.zhaoxin.com[10.28.252.163] X-Barracuda-Start-Time: 1682080735 X-Barracuda-Encrypted: ECDHE-RSA-AES128-GCM-SHA256 X-Barracuda-URL: https://10.28.252.36:4443/cgi-mod/mark.cgi X-Virus-Scanned: by bsmtpd at zhaoxin.com X-Barracuda-Scan-Msg-Size: 1770 X-Barracuda-BRTS-Status: 1 X-Barracuda-Bayes: INNOCENT GLOBAL 0.0004 1.0000 -2.0184 X-Barracuda-Spam-Score: 1.09 X-Barracuda-Spam-Status: No, SCORE=1.09 using global scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=9.0 tests=DATE_IN_FUTURE_06_12, DATE_IN_FUTURE_06_12_2 X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.107724 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- 0.01 DATE_IN_FUTURE_06_12 Date: is 6 to 12 hours after Received: date 3.10 DATE_IN_FUTURE_06_12_2 DATE_IN_FUTURE_06_12_2 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Some zhaoxin xHCI controllers follow usb3.1 spec, but only support gen1 speed 5G. While in Linux kernel, if xHCI suspport usb3.1,root hub speed will show on 10G. To fix this issue of zhaoxin xHCI platforms, read usb speed ID supported by xHCI to determine root hub speed. Signed-off-by: Weitao Wang --- drivers/usb/host/xhci.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 6307bae9cddf..31d6ace9cace 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -5294,6 +5294,7 @@ static void xhci_hcd_init_usb2_data(struct xhci_hcd *xhci, struct usb_hcd *hcd) static void xhci_hcd_init_usb3_data(struct xhci_hcd *xhci, struct usb_hcd *hcd) { unsigned int minor_rev; + unsigned int i, j; /* * Early xHCI 1.1 spec did not mention USB 3.1 capable hosts @@ -5323,6 +5324,27 @@ static void xhci_hcd_init_usb3_data(struct xhci_hcd *xhci, struct usb_hcd *hcd) hcd->self.root_hub->ssp_rate = USB_SSP_GEN_2x1; break; } + + /* Usb3.1 has gen1 and gen2, Some zhaoxin's xHCI controller + * that follow usb3.1 spec but only support gen1. + */ + if (xhci->quirks & XHCI_ZHAOXIN_HOST) { + minor_rev = 0; + for (j = 0; j < xhci->num_port_caps; j++) { + for (i = 0; i < xhci->port_caps[j].psi_count; i++) { + if (XHCI_EXT_PORT_PSIV(xhci->port_caps[j].psi[i]) >= 5) { + minor_rev = 1; + break; + } + } + if (minor_rev) + break; + } + if (minor_rev != 1) { + hcd->speed = HCD_USB3; + hcd->self.root_hub->speed = USB_SPEED_SUPER; + } + } xhci_info(xhci, "Host supports USB 3.%x %sSuperSpeed\n", minor_rev, minor_rev ? "Enhanced " : "");