From patchwork Tue Jul 11 16:43:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sui Jingfeng X-Patchwork-Id: 13309088 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7A6B4EB64DC for ; Tue, 11 Jul 2023 16:43:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C055810E3DC; Tue, 11 Jul 2023 16:43:37 +0000 (UTC) Received: from out-41.mta1.migadu.com (out-41.mta1.migadu.com [95.215.58.41]) by gabe.freedesktop.org (Postfix) with ESMTPS id 76E8C10E3DC for ; Tue, 11 Jul 2023 16:43:34 +0000 (UTC) X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1689093812; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=qerYEjJsYQa89wBNUybGoMjyzLMs27H7zUPn+Dcw/G0=; b=cLX+YcBRiHpKikMeKMwG3mmNyBOCt0RfzhMRCQMFVMsE5PUvN0MMXatH5virGuBPf1bPzP TlrzyZr2xWSz6KpDcpt68BaSDQcRrPHi91BQyPlN45VH8b+lOC+BzDNGujXDPizGjou5oq GspWd6OWyS+7lx+YxAilLOZFQYnLH5E= From: Sui Jingfeng To: David Airlie Date: Wed, 12 Jul 2023 00:43:04 +0800 Message-Id: <20230711164310.791756-4-sui.jingfeng@linux.dev> In-Reply-To: <20230711164310.791756-1-sui.jingfeng@linux.dev> References: <20230711164310.791756-1-sui.jingfeng@linux.dev> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT Subject: [Intel-gfx] [PATCH v3 3/9] PCI/VGA: Switch to aperture_contain_firmware_fb_nonreloc() X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-fbdev@vger.kernel.org, Sui Jingfeng , kvm@vger.kernel.org, intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Sui Jingfeng The observation behind this is that we should avoid accessing the global screen_info directly. Call the aperture_contain_firmware_fb_nonreloc() function to implement the detection of whether an aperture contains the firmware FB. This patch helps to decouple the determination from the implementation. Or, in other words, we intend to make the determination opaque to the caller. The determination may choose to be arch-dependent or arch-independent. But vgaarb, as a consumer of the determination, shouldn't care how the does determination is implemented. Signed-off-by: Sui Jingfeng --- drivers/pci/vgaarb.c | 19 ++++--------------- 1 file changed, 4 insertions(+), 15 deletions(-) diff --git a/drivers/pci/vgaarb.c b/drivers/pci/vgaarb.c index bf96e085751d..953daf731b2c 100644 --- a/drivers/pci/vgaarb.c +++ b/drivers/pci/vgaarb.c @@ -14,6 +14,7 @@ #define vgaarb_info(dev, fmt, arg...) dev_info(dev, "vgaarb: " fmt, ##arg) #define vgaarb_err(dev, fmt, arg...) dev_err(dev, "vgaarb: " fmt, ##arg) +#include #include #include #include @@ -26,7 +27,6 @@ #include #include #include -#include #include #include #include @@ -558,20 +558,11 @@ void vga_put(struct pci_dev *pdev, unsigned int rsrc) } EXPORT_SYMBOL(vga_put); +/* Select the device owning the boot framebuffer if there is one */ static bool vga_is_firmware_default(struct pci_dev *pdev) { #if defined(CONFIG_X86) || defined(CONFIG_IA64) - u64 base = screen_info.lfb_base; - u64 size = screen_info.lfb_size; struct resource *r; - u64 limit; - - /* Select the device owning the boot framebuffer if there is one */ - - if (screen_info.capabilities & VIDEO_CAPABILITY_64BIT_BASE) - base |= (u64)screen_info.ext_lfb_base << 32; - - limit = base + size; /* Does firmware framebuffer belong to us? */ pci_dev_for_each_resource(pdev, r) { @@ -581,10 +572,8 @@ static bool vga_is_firmware_default(struct pci_dev *pdev) if (!r->start || !r->end) continue; - if (base < r->start || limit >= r->end) - continue; - - return true; + if (aperture_contain_firmware_fb_nonreloc(r->start, r->end)) + return true; } #endif return false;