From patchwork Thu Aug 16 17:54:55 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Deucher X-Patchwork-Id: 1334691 Return-Path: X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by patchwork1.kernel.org (Postfix) with ESMTP id CE13840210 for ; Thu, 16 Aug 2012 17:55:18 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9316FA0ECC for ; Thu, 16 Aug 2012 10:55:18 -0700 (PDT) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-yx0-f177.google.com (mail-yx0-f177.google.com [209.85.213.177]) by gabe.freedesktop.org (Postfix) with ESMTP id 6A1509E824 for ; Thu, 16 Aug 2012 10:55:05 -0700 (PDT) Received: by yenq9 with SMTP id q9so3415169yen.36 for ; Thu, 16 Aug 2012 10:55:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer; bh=nVsQI6ygeNT8vKo0p0pt3xk25FBvzYK18c8E0/IC4jA=; b=nYISkUsZvtNpeL2PQ1tjK4yqQF9XlF8RzQ+n/WPzCCPXD8FEwJKDO9+4wbCVOYTfmb +/Y+8NhV52utwodLP7TbFEregvSmL5uCC82OCtq7+OQIE7WIH+fnHFGYL/xFkMGe2Cdg BB/TCJCmSH4VXvvb4V/Zd80ftWlZWwp9jXDVew2qVkIlPDeF8Uzj00lqIF5c8qFuKNjv r+E8t96RM4GM+ijJCysmlgWpNaGo6bHh/C5VOT3yKZMevSy3Sa5LlOIp9dAx/c1Qa/4A onVWihaRMv+her/MmP1N8Fp6y+WEDuxPh6cZtOJr3pqE2O7NsDLiXCCKSIKK5MlYq8dg Ix1A== Received: by 10.236.81.111 with SMTP id l75mr2359912yhe.77.1345139704908; Thu, 16 Aug 2012 10:55:04 -0700 (PDT) Received: from localhost.localdomain (static-74-96-105-49.washdc.fios.verizon.net. [74.96.105.49]) by mx.google.com with ESMTPS id e5sm9465954yhk.21.2012.08.16.10.55.03 (version=SSLv3 cipher=OTHER); Thu, 16 Aug 2012 10:55:04 -0700 (PDT) From: alexdeucher@gmail.com To: airlied@gmail.com, dri-devel@lists.freedesktop.org Subject: [PATCH 1/2] drm/radeon: implement ACPI VFCT vbios fetch Date: Thu, 16 Aug 2012 13:54:55 -0400 Message-Id: <1345139696-28050-1-git-send-email-alexdeucher@gmail.com> X-Mailer: git-send-email 1.7.7.5 Cc: Alex Deucher , stable@vger.kernel.org, David L X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org Errors-To: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org From: David L This is required for pure UEFI systems. The vbios is stored in ACPI rather than at the legacy vga location. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=26891 Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Reviewed-by: Jerome Glisse --- drivers/gpu/drm/radeon/radeon_bios.c | 59 ++++++++++++++++++++++++++++++++++ 1 files changed, 59 insertions(+), 0 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c index 501f488..f06494a7 100644 --- a/drivers/gpu/drm/radeon/radeon_bios.c +++ b/drivers/gpu/drm/radeon/radeon_bios.c @@ -32,6 +32,9 @@ #include #include +#ifdef CONFIG_ACPI +#include +#endif /* * BIOS. */ @@ -476,6 +479,58 @@ static bool radeon_read_disabled_bios(struct radeon_device *rdev) return legacy_read_disabled_bios(rdev); } +#ifdef CONFIG_ACPI +static bool radeon_acpi_vfct_bios(struct radeon_device *rdev) +{ + bool ret = false; + struct acpi_table_header *hdr; + /* acpi_get_table_with_size is not exported :( */ + acpi_size tbl_size = 0x7fffffff; + UEFI_ACPI_VFCT *vfct; + GOP_VBIOS_CONTENT *vbios; + VFCT_IMAGE_HEADER *vhdr; + + if (!ACPI_SUCCESS(acpi_get_table("VFCT", 1, &hdr))) + return false; + if (tbl_size < sizeof(UEFI_ACPI_VFCT)) { + DRM_ERROR("ACPI VFCT table present but broken (too short #1)\n"); + goto out_unmap; + } + + vfct = (UEFI_ACPI_VFCT *)hdr; + if (vfct->VBIOSImageOffset + sizeof(VFCT_IMAGE_HEADER) > tbl_size) { + DRM_ERROR("ACPI VFCT table present but broken (too short #2)\n"); + goto out_unmap; + } + + vbios = (GOP_VBIOS_CONTENT *)((char *)hdr + vfct->VBIOSImageOffset); + vhdr = &vbios->VbiosHeader; + DRM_INFO("ACPI VFCT contains a BIOS for %02x:%02x.%d %04x:%04x, size %d\n", + vhdr->PCIBus, vhdr->PCIDevice, vhdr->PCIFunction, + vhdr->VendorID, vhdr->DeviceID, vhdr->ImageLength); + + if (vhdr->PCIBus != rdev->pdev->bus->number || + vhdr->PCIDevice != PCI_SLOT(rdev->pdev->devfn) || + vhdr->PCIFunction != PCI_FUNC(rdev->pdev->devfn) || + vhdr->VendorID != rdev->pdev->vendor || + vhdr->DeviceID != rdev->pdev->device) { + DRM_INFO("ACPI VFCT table is not for this card\n"); + goto out_unmap; + }; + + if (vfct->VBIOSImageOffset + sizeof(VFCT_IMAGE_HEADER) + vhdr->ImageLength > tbl_size) { + DRM_ERROR("ACPI VFCT image truncated\n"); + goto out_unmap; + } + + rdev->bios = kmemdup(&vbios->VbiosContent, vhdr->ImageLength, GFP_KERNEL); + ret = !!rdev->bios; + +out_unmap: + /* uh, no idea what to do here... */ + return ret; +} +#endif bool radeon_get_bios(struct radeon_device *rdev) { @@ -487,6 +542,10 @@ bool radeon_get_bios(struct radeon_device *rdev) r = igp_read_bios_from_vram(rdev); if (r == false) r = radeon_read_bios(rdev); +#ifdef CONFIG_ACPI + if (r == false) + r = radeon_acpi_vfct_bios(rdev); +#endif if (r == false) { r = radeon_read_disabled_bios(rdev); }