From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 EE8C8C2D0A3 for ; Tue, 3 Nov 2020 21:52:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 93A9120780 for ; Tue, 3 Nov 2020 21:52:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604440364; bh=RbG2j+0IlLrYXnhvDjB3G8JULbcoe59KwJwsx1edzEw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=OLM+ngFHr1Kzk3RY7DnPXgJBOrJXerQN7p0iLNlNGSiXXO5TpFkhRFSXar7waEfKE +cpY5FUFRQbflgeTyw3IBIZxvxpum2SPt54ZYdNyM4VdMJodMmDEqywEJpUk5NhEBC SrvVbySW6gS47M7W07LPuJJO4bcjyH7N5mQfuz1A= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731258AbgKCVwn (ORCPT ); Tue, 3 Nov 2020 16:52:43 -0500 Received: from mail.kernel.org ([198.145.29.99]:36560 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731254AbgKCUqs (ORCPT ); Tue, 3 Nov 2020 15:46:48 -0500 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 99F2F223FD; Tue, 3 Nov 2020 20:46:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604436408; bh=RbG2j+0IlLrYXnhvDjB3G8JULbcoe59KwJwsx1edzEw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pEbz/RyZlWktE8hefs1uOVO2x46hJpgbsM4yJab0wZrGX7miR3oAF4Z6BKI86qIeJ CwnXYrz+MXgu1oAsNrFRfyqICdZCFsUjjwcG/HE0NXazXcNtyzcwm3o8N2uqlcM/hL MGThEdYXvLmphsdbPl8ULDtlx2mxDAONFx9wzdV8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sanket Goswami , Sandeep Singh , Mathias Nyman Subject: [PATCH 5.9 238/391] usb: xhci: Workaround for S3 issue on AMD SNPS 3.0 xHC Date: Tue, 3 Nov 2020 21:34:49 +0100 Message-Id: <20201103203403.062423379@linuxfoundation.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201103203348.153465465@linuxfoundation.org> References: <20201103203348.153465465@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sandeep Singh commit 2a632815683d2d34df52b701a36fe5ac6654e719 upstream. On some platform of AMD, S3 fails with HCE and SRE errors. To fix this, need to disable a bit which is enable in sparse controller. Cc: stable@vger.kernel.org #v4.19+ Signed-off-by: Sanket Goswami Signed-off-by: Sandeep Singh Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20201028203124.375344-3-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 17 +++++++++++++++++ drivers/usb/host/xhci.h | 1 + 2 files changed, 18 insertions(+) --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -22,6 +22,8 @@ #define SSIC_PORT_CFG2_OFFSET 0x30 #define PROG_DONE (1 << 30) #define SSIC_PORT_UNUSED (1 << 31) +#define SPARSE_DISABLE_BIT 17 +#define SPARSE_CNTL_ENABLE 0xC12C /* Device for a quirk */ #define PCI_VENDOR_ID_FRESCO_LOGIC 0x1b73 @@ -160,6 +162,9 @@ static void xhci_pci_quirks(struct devic (pdev->device == 0x15e0 || pdev->device == 0x15e1)) xhci->quirks |= XHCI_SNPS_BROKEN_SUSPEND; + if (pdev->vendor == PCI_VENDOR_ID_AMD && pdev->device == 0x15e5) + xhci->quirks |= XHCI_DISABLE_SPARSE; + if (pdev->vendor == PCI_VENDOR_ID_AMD) xhci->quirks |= XHCI_TRUST_TX_LENGTH; @@ -490,6 +495,15 @@ static void xhci_pme_quirk(struct usb_hc readl(reg); } +static void xhci_sparse_control_quirk(struct usb_hcd *hcd) +{ + u32 reg; + + reg = readl(hcd->regs + SPARSE_CNTL_ENABLE); + reg &= ~BIT(SPARSE_DISABLE_BIT); + writel(reg, hcd->regs + SPARSE_CNTL_ENABLE); +} + static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); @@ -509,6 +523,9 @@ static int xhci_pci_suspend(struct usb_h if (xhci->quirks & XHCI_SSIC_PORT_UNUSED) xhci_ssic_port_unused_quirk(hcd, true); + if (xhci->quirks & XHCI_DISABLE_SPARSE) + xhci_sparse_control_quirk(hcd); + ret = xhci_suspend(xhci, do_wakeup); if (ret && (xhci->quirks & XHCI_SSIC_PORT_UNUSED)) xhci_ssic_port_unused_quirk(hcd, false); --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1874,6 +1874,7 @@ struct xhci_hcd { #define XHCI_RESET_PLL_ON_DISCONNECT BIT_ULL(34) #define XHCI_SNPS_BROKEN_SUSPEND BIT_ULL(35) #define XHCI_RENESAS_FW_QUIRK BIT_ULL(36) +#define XHCI_DISABLE_SPARSE BIT_ULL(38) unsigned int num_active_eps; unsigned int limit_active_eps;