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Fri, 30 Apr 2021 07:37:18 -0400 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-132-1NLom1taMGSV-tIvzPrDvQ-1; Fri, 30 Apr 2021 07:37:08 -0400 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 A965B9196A1; Fri, 30 Apr 2021 11:37:07 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-112-203.ams2.redhat.com [10.36.112.203]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 071925D719; Fri, 30 Apr 2021 11:37:01 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id E726F18007A5; Fri, 30 Apr 2021 13:35:47 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1619782632; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=w1HS3FPzeemdBuzJ0MMLNIXg7ZaeNhkU7tj//MSnykU=; b=f61AOPlCQQPwuWoqLtV9Ft+s8GpfgmnHODzaaA9FvMAT1rBtfxyiYJWkKZvHipKFQraBOk zgOhgs8O22Id/LkYjeDD9lQPQgkcCWbeo00MTisaSqLibYCjMQ88L08I1UWSS+UYYu2gz7 Ax2h7MKulkPr56xD4XRqSN1SCZEph+c= X-MC-Unique: 1NLom1taMGSV-tIvzPrDvQ-1 From: Gerd Hoffmann To: qemu-devel@nongnu.org Subject: [PATCH v2 15/16] modules: add have_vga Date: Fri, 30 Apr 2021 13:35:46 +0200 Message-Id: <20210430113547.1816178-16-kraxel@redhat.com> In-Reply-To: <20210430113547.1816178-1-kraxel@redhat.com> References: <20210430113547.1816178-1-kraxel@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kraxel@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable 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; Received-SPF: pass client-ip=170.10.133.124; envelope-from=kraxel@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.22, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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: Paolo Bonzini , tina.zhang@intel.com, Gerd Hoffmann , vivek.kasireddy@intel.com, "Michael S. Tsirkin" Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Introduce a symbol which can be used to prevent display modules which need vga support being loaded into system emulators with CONFIG_VGA=3Dn. Signed-off-by: Gerd Hoffmann --- include/hw/display/vga.h | 6 ++++++ hw/display/vga.c | 2 ++ 2 files changed, 8 insertions(+) diff --git a/include/hw/display/vga.h b/include/hw/display/vga.h index ca0003dbfd92..5f7825e0e368 100644 --- a/include/hw/display/vga.h +++ b/include/hw/display/vga.h @@ -11,6 +11,12 @@ =20 #include "exec/hwaddr.h" =20 +/* + * modules can reference this symbol to avoid being loaded + * into system emulators without vga support + */ +extern bool have_vga; + enum vga_retrace_method { VGA_RETRACE_DUMB, VGA_RETRACE_PRECISE diff --git a/hw/display/vga.c b/hw/display/vga.c index 836ad50c7b6d..28a90e30d0cf 100644 --- a/hw/display/vga.c +++ b/hw/display/vga.c @@ -39,6 +39,8 @@ //#define DEBUG_VGA_MEM //#define DEBUG_VGA_REG =20 +bool have_vga =3D true; + /* 16 state changes per vertical frame @60 Hz */ #define VGA_TEXT_CURSOR_PERIOD_MS (1000 * 2 * 16 / 60) =20 --=20 2.30.2