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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 87BD6C2D0C4 for ; Tue, 10 Dec 2019 21:31:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5D1BC2073B for ; Tue, 10 Dec 2019 21:31:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576013491; bh=yS2KDEXb1mtqkGjsdBPg69ZkH+a+Qekok3ngQXZ45Jc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ljngQaeVDsFzLJhuJe8asfTt6NuI1x5l3x2E6z8EXrS535hwKyYWIPAoEl2LaQ4wF 4E5Ezv5oVE2209zQjyfmSKyFG7mnRDynHkhjKQe797OHIRGEipe8sKpBDmnWovxhad yUzY7XQfpjcUNgdPkZmIrummcY3woDmLOAB941hE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728175AbfLJVJ3 (ORCPT ); Tue, 10 Dec 2019 16:09:29 -0500 Received: from mail.kernel.org ([198.145.29.99]:57884 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726913AbfLJVJZ (ORCPT ); Tue, 10 Dec 2019 16:09:25 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D915824699; Tue, 10 Dec 2019 21:09:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576012164; bh=yS2KDEXb1mtqkGjsdBPg69ZkH+a+Qekok3ngQXZ45Jc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BBOMGUX+vuZ2Ifb1HTSH9xfKyc6fTsWNsWvTyOrj4GnZ3RIZX+4Hvspq7kgmVsPVR CKjV2dudYXM4AXWEJDJ4zp5GgrK450tnk315R3MTXv7yGiBnFKjaXfZ1ZTRdSWaTIo Rr/QfXkWxNaaHS3H51cD6WkWPH21B9eVY4dv4CkE= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Dmytro Laktyushkin , Bhawanpreet Lakha , Roman Li , Alex Deucher , Sasha Levin , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.4 125/350] drm/amd/display: enable hostvm based on roimmu active for dcn2.1 Date: Tue, 10 Dec 2019 16:03:50 -0500 Message-Id: <20191210210735.9077-86-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191210210735.9077-1-sashal@kernel.org> References: <20191210210735.9077-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dmytro Laktyushkin [ Upstream commit 48d92e8eda3d9b61978377e7539bfc5958e850cf ] Enabling hostvm when ROIMMU is not active seems to break GPUVM. This fixes the issue by not enabling hostvm if ROIMMU is not activated. Signed-off-by: Dmytro Laktyushkin Acked-by: Bhawanpreet Lakha Reviewed-by: Roman Li Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- .../drm/amd/display/dc/dcn21/dcn21_hubbub.c | 40 ++++++++++++------- 1 file changed, 25 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubbub.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubbub.c index d1266741763b9..f5f6b4a0f0aa4 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubbub.c +++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubbub.c @@ -22,6 +22,7 @@ * Authors: AMD * */ +#include #include "dm_services.h" #include "dcn20/dcn20_hubbub.h" #include "dcn21_hubbub.h" @@ -71,30 +72,39 @@ static uint32_t convert_and_clamp( void dcn21_dchvm_init(struct hubbub *hubbub) { struct dcn20_hubbub *hubbub1 = TO_DCN20_HUBBUB(hubbub); + uint32_t riommu_active; + int i; //Init DCHVM block REG_UPDATE(DCHVM_CTRL0, HOSTVM_INIT_REQ, 1); //Poll until RIOMMU_ACTIVE = 1 - //TODO: Figure out interval us and retry count - REG_WAIT(DCHVM_RIOMMU_STAT0, RIOMMU_ACTIVE, 1, 5, 100); + for (i = 0; i < 100; i++) { + REG_GET(DCHVM_RIOMMU_STAT0, RIOMMU_ACTIVE, &riommu_active); - //Reflect the power status of DCHUBBUB - REG_UPDATE(DCHVM_RIOMMU_CTRL0, HOSTVM_POWERSTATUS, 1); + if (riommu_active) + break; + else + udelay(5); + } + + if (riommu_active) { + //Reflect the power status of DCHUBBUB + REG_UPDATE(DCHVM_RIOMMU_CTRL0, HOSTVM_POWERSTATUS, 1); - //Start rIOMMU prefetching - REG_UPDATE(DCHVM_RIOMMU_CTRL0, HOSTVM_PREFETCH_REQ, 1); + //Start rIOMMU prefetching + REG_UPDATE(DCHVM_RIOMMU_CTRL0, HOSTVM_PREFETCH_REQ, 1); - // Enable dynamic clock gating - REG_UPDATE_4(DCHVM_CLK_CTRL, - HVM_DISPCLK_R_GATE_DIS, 0, - HVM_DISPCLK_G_GATE_DIS, 0, - HVM_DCFCLK_R_GATE_DIS, 0, - HVM_DCFCLK_G_GATE_DIS, 0); + // Enable dynamic clock gating + REG_UPDATE_4(DCHVM_CLK_CTRL, + HVM_DISPCLK_R_GATE_DIS, 0, + HVM_DISPCLK_G_GATE_DIS, 0, + HVM_DCFCLK_R_GATE_DIS, 0, + HVM_DCFCLK_G_GATE_DIS, 0); - //Poll until HOSTVM_PREFETCH_DONE = 1 - //TODO: Figure out interval us and retry count - REG_WAIT(DCHVM_RIOMMU_STAT0, HOSTVM_PREFETCH_DONE, 1, 5, 100); + //Poll until HOSTVM_PREFETCH_DONE = 1 + REG_WAIT(DCHVM_RIOMMU_STAT0, HOSTVM_PREFETCH_DONE, 1, 5, 100); + } } static int hubbub21_init_dchub(struct hubbub *hubbub, -- 2.20.1