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=-6.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS 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 1B643C83000 for ; Wed, 29 Apr 2020 14:13:31 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D4EE32083B for ; Wed, 29 Apr 2020 14:13:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="erpqD3+O" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D4EE32083B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:46954 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jTnSs-00071q-02 for qemu-devel@archiver.kernel.org; Wed, 29 Apr 2020 10:13:30 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42540) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jTnGp-0002OP-6p for qemu-devel@nongnu.org; Wed, 29 Apr 2020 10:01:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.90_1) (envelope-from ) id 1jTnGJ-00043D-Rn for qemu-devel@nongnu.org; Wed, 29 Apr 2020 10:01:02 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:33513 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jTnGJ-00042p-CJ for qemu-devel@nongnu.org; Wed, 29 Apr 2020 10:00:31 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588168830; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=0yOenfebwnpVX6l3vwC13KeDvVoVS9CkDx3osunlcAo=; b=erpqD3+OO3nPUcmy7kFMIeUd5MOU9rnoaVO2LS1vCL1TPQIv3nbQn5zMTh/dnmOJlTb6f3 ZcS0Wr6o65ndmzQRqLWRh+edxe9hkYru+bwSgkElzSBi0FMVnB0Z/Io+zAlp67xySlvkiM WCdStOrLvst8orzUkvN+yW3b61xgzCE= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-150-cQsdcgFANPOBFzFpzZjgCQ-1; Wed, 29 Apr 2020 10:00:27 -0400 X-MC-Unique: cQsdcgFANPOBFzFpzZjgCQ-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id A3674835B5C; Wed, 29 Apr 2020 14:00:26 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-113-193.ams2.redhat.com [10.36.113.193]) by smtp.corp.redhat.com (Postfix) with ESMTP id B3FE95D76A; Wed, 29 Apr 2020 14:00:16 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 6D40E9DA1; Wed, 29 Apr 2020 16:00:03 +0200 (CEST) From: Gerd Hoffmann To: qemu-devel@nongnu.org Subject: [PATCH v3 08/15] acpi: serial: don't use _STA method Date: Wed, 29 Apr 2020 15:59:56 +0200 Message-Id: <20200429140003.7336-9-kraxel@redhat.com> In-Reply-To: <20200429140003.7336-1-kraxel@redhat.com> References: <20200429140003.7336-1-kraxel@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=205.139.110.120; envelope-from=kraxel@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/04/29 01:42:37 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.120 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: , Cc: Kevin Wolf , Laurent Vivier , Thomas Huth , Eduardo Habkost , qemu-block@nongnu.org, "Michael S. Tsirkin" , Max Reitz , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Gerd Hoffmann , Paolo Bonzini , Igor Mammedov , John Snow , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The _STA method dates back to the days where we had a static DSDT. The device is listed in the DSDT table unconditionally and the _STA method checks a bit in the isa bridge pci config space to figure whenever a given is isa device is present or not, then evaluates to 0x0f (present) or 0x00 (absent). These days the DSDT is generated by qemu anyway, so if a device is not present we can simply drop it from the DSDT instead. Signed-off-by: Gerd Hoffmann Reviewed-by: Igor Mammedov --- hw/i386/acpi-build.c | 32 ++++++++------------------------ 1 file changed, 8 insertions(+), 24 deletions(-) diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index f79e5eaf170d..a99e5bbd1156 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -1202,50 +1202,34 @@ static Aml *build_lpt_device_aml(void) return dev; } =20 -static Aml *build_com_device_aml(uint8_t uid) +static void build_com_device_aml(Aml *scope, uint8_t uid) { Aml *dev; Aml *crs; - Aml *method; - Aml *if_ctx; - Aml *else_ctx; - Aml *zero =3D aml_int(0); - Aml *is_present =3D aml_local(0); - const char *enabled_field =3D "CAEN"; uint8_t irq =3D 4; uint16_t io_port =3D 0x03F8; =20 assert(uid =3D=3D 1 || uid =3D=3D 2); if (uid =3D=3D 2) { - enabled_field =3D "CBEN"; irq =3D 3; io_port =3D 0x02F8; } + if (!memory_region_present(get_system_io(), io_port)) { + return; + } =20 dev =3D aml_device("COM%d", uid); aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0501"))); aml_append(dev, aml_name_decl("_UID", aml_int(uid))); =20 - method =3D aml_method("_STA", 0, AML_NOTSERIALIZED); - aml_append(method, aml_store(aml_name("%s", enabled_field), is_present= )); - if_ctx =3D aml_if(aml_equal(is_present, zero)); - { - aml_append(if_ctx, aml_return(aml_int(0x00))); - } - aml_append(method, if_ctx); - else_ctx =3D aml_else(); - { - aml_append(else_ctx, aml_return(aml_int(0x0f))); - } - aml_append(method, else_ctx); - aml_append(dev, method); + aml_append(dev, aml_name_decl("_STA", aml_int(0xf))); =20 crs =3D aml_resource_template(); aml_append(crs, aml_io(AML_DECODE16, io_port, io_port, 0x00, 0x08)); aml_append(crs, aml_irq_no_flags(irq)); aml_append(dev, aml_name_decl("_CRS", crs)); =20 - return dev; + aml_append(scope, dev); } =20 static void build_isa_devices_aml(Aml *table) @@ -1262,8 +1246,8 @@ static void build_isa_devices_aml(Aml *table) aml_append(scope, build_fdc_device_aml(fdc)); } aml_append(scope, build_lpt_device_aml()); - aml_append(scope, build_com_device_aml(1)); - aml_append(scope, build_com_device_aml(2)); + build_com_device_aml(scope, 1); + build_com_device_aml(scope, 2); =20 if (ambiguous) { error_report("Multiple ISA busses, unable to define IPMI ACPI data= "); --=20 2.18.2