From nobody Wed Nov 12 21:50:37 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=gmail.com ARC-Seal: i=1; a=rsa-sha256; t=1574436530; cv=none; d=zohomail.com; s=zohoarc; b=Fyn7413yHxOlg17hJUjCC/cIV9n2d1B5qKqw6vBb2Qd7jj+B0OG07523VfoZ32uJPxSb/Hak28sDKSGYmB4pQIK7sj+09rgClvyCAcouuACDR37pJG5o4H3aHXRMwuM1xEnCX+DsMNvIwKobDUXkUO15PehjeE2Bu1QWJd7xtBM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1574436530; h=Date:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:Sender:Subject:To; bh=GCzWriIu4N0LBgO938q0R/XT7fvDgSNrqLwMyXX/ghY=; b=Mo2najjfxpHjW8gFfq5bsh9jvcqMwKGzfgPh1Z7LrwpHRvPvehFeoDdiW8c/jhoEtuGYTtC8skBMhipCGOyPTBkcfHlle+E8kqih9PWUW8TLqFv2iIe6B/GU81kQmxUplb4KonVsxbrwjUb8+Z8m47mplWmWJDzWRJXAWHWhBRc= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 157443653033195.08051884923634; Fri, 22 Nov 2019 07:28:50 -0800 (PST) Received: from localhost ([::1]:52106 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iYArW-0006rm-1r for importer@patchew.org; Fri, 22 Nov 2019 10:28:46 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:42641) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iYAqm-0006FR-5T for qemu-devel@nongnu.org; Fri, 22 Nov 2019 10:28:01 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iYAqk-0005Uy-W5 for qemu-devel@nongnu.org; Fri, 22 Nov 2019 10:27:59 -0500 Received: from mail-pl1-x643.google.com ([2607:f8b0:4864:20::643]:45308) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iYAqk-0005Up-Qy; Fri, 22 Nov 2019 10:27:58 -0500 Received: by mail-pl1-x643.google.com with SMTP id w7so3219472plz.12; Fri, 22 Nov 2019 07:27:58 -0800 (PST) Received: from localhost.localdomain (unknown-224-80.windriver.com. [147.11.224.80]) by smtp.gmail.com with ESMTPSA id b9sm8020053pfp.77.2019.11.22.07.27.56 (version=TLS1 cipher=AES128-SHA bits=128/128); Fri, 22 Nov 2019 07:27:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id; bh=GCzWriIu4N0LBgO938q0R/XT7fvDgSNrqLwMyXX/ghY=; b=jexQjhrg3l111yJwZky4vkESt7FDIKSlWOPtolE0JxOfOBBFqySZEoYvDteTf9KeTb M4hjsxBFlnkaTYbx6e4qRLT4B+tVPLagrWTMTjlwedpu9eMGahvwRj53oVY9qPXPfXxR T21tXZo2poIYDUYUHLFUXCWAFZJbTAJ7GHumj3eznQeBf9LLijx6iMXGytdnt5s38nVO vviEs5yxDrgLk6y8oTnBwtLqjhH9+YoKnXMDdRo8y6urLQp5Kg7bfaWr8Zb3VaVJdb/N vorkMw5MD3ZigEb9qr0j9Z6DOxUnm9+cSuqljKlbrrwqEqco4/K7nDjmS4eOqLzEV2Ci GA7A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id; bh=GCzWriIu4N0LBgO938q0R/XT7fvDgSNrqLwMyXX/ghY=; b=ofSR1EihNJvhFMim/Z4Ag3yEbBESn4s3irPlN241526S40umrrsbpZaKMe2yf2a7oh anX2vzGL0phBg3lMEkHW19a9cPeVWgWkYjGqKskB1h+g6LEsXfbl1VUK6bRqYCvSWi9l h4yg3GMTAbeoXHYgrYhmRJLY2ob95zPVAgqB+l9vJbVLaz27GAsJbnumgeV1mqHOj99C Lsb0BFk0SqwuHFCMaaOKO+qeMUBHZ+dD8wdhgz9GxMaN7Wlf4OWhLAcYDW2v67b6iWzb EJcslu46uZ5e1tmDEkHellVR5vkKHk92dG6h1UvhldlIgEC7aq2MNonPD/OFkTNonGeH SwZQ== X-Gm-Message-State: APjAAAX12+/FeLL7XmsLQhoBIAUO5yuQ2/xxGjMiFqchwVwiMCecXZx8 0eyFOhzNNG1crZ6KmXjLxCE= X-Google-Smtp-Source: APXvYqxWZykeGlXWdoUQq7xaO4FnDylmzVZ5Rd6/tM11UB0hb0FM8TowVLCx4e12nooG2DtJzIz4Yg== X-Received: by 2002:a17:902:758e:: with SMTP id j14mr15094859pll.254.1574436477615; Fri, 22 Nov 2019 07:27:57 -0800 (PST) From: Bin Meng To: Alistair Francis , Bastian Koppelmann , Palmer Dabbelt , Sagar Karandikar , qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [PATCH] riscv: virt: Allow PCI address 0 Date: Fri, 22 Nov 2019 07:27:52 -0800 Message-Id: <1574436472-6017-1-git-send-email-bmeng.cn@gmail.com> X-Mailer: git-send-email 1.7.1 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::643 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @gmail.com) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" When testing e1000 with the virt machine, e1000's I/O space cannot be accessed. Debugging shows that the I/O BAR (BAR1) is correctly written with address 0 plus I/O enable bit, but QEMU's "info pci" shows that: Bus 0, device 1, function 0: Ethernet controller: PCI device 8086:100e ... BAR1: I/O at 0xffffffffffffffff [0x003e]. ... It turns out we should set pci_allow_0_address to true to allow 0 PCI address, otherwise pci_bar_address() treats such address as PCI_BAR_UNMAPPED. Signed-off-by: Bin Meng Reviewed-by: Palmer Dabbelt --- hw/riscv/virt.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c index 23f340d..411bef5 100644 --- a/hw/riscv/virt.c +++ b/hw/riscv/virt.c @@ -603,6 +603,7 @@ static void riscv_virt_machine_class_init(ObjectClass *= oc, void *data) mc->init =3D riscv_virt_board_init; mc->max_cpus =3D 8; mc->default_cpu_type =3D VIRT_CPU; + mc->pci_allow_0_address =3D true; } =20 static const TypeInfo riscv_virt_machine_typeinfo =3D { --=20 2.7.4