From patchwork Thu Aug 10 23:21:27 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aleksandr Bezzubikov X-Patchwork-Id: 800360 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="NW68FMzR"; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3xT40m1y0hz9sN5 for ; Fri, 11 Aug 2017 09:22:12 +1000 (AEST) Received: from localhost ([::1]:57401 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dfwmH-00038S-1m for incoming@patchwork.ozlabs.org; Thu, 10 Aug 2017 19:22:09 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43034) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dfwlo-00037g-Ae for qemu-devel@nongnu.org; Thu, 10 Aug 2017 19:21:41 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dfwlm-0002lV-9T for qemu-devel@nongnu.org; Thu, 10 Aug 2017 19:21:40 -0400 Received: from mail-lf0-x241.google.com ([2a00:1450:4010:c07::241]:35015) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1dfwlm-0002kq-1v for qemu-devel@nongnu.org; Thu, 10 Aug 2017 19:21:38 -0400 Received: by mail-lf0-x241.google.com with SMTP id w199so1367217lff.2 for ; Thu, 10 Aug 2017 16:21:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=hFN+yM4WCJUeicW8KR6rwDTmVoViQRFuPVsqkazL6O4=; b=NW68FMzRY12ZcvtoFb3X4HFs3axkEOtFjwiUqmJj493bzN1PzZtG//WyMd7hqB4SWW NXLQmaJK9Cimtm+HoqW9aSBp8b00KsFQ6q0jowWmW4KUsFwmnZ0a61BlRQ8YBQkYUvaY 9is40UprGgt9QFnrnyXxitkY9qkhMu9Fkjt5eX5eVcWNLo++yY2ClOGMhS5n0RyDK9Rp YvgdP8LPog+WBb6fXZiexX/69E0CVWaG9foCHWWPx6ZTzoe8FnT6PWCUGiSzbXPmRMK0 yNknPVdIn2m1lJJZ6EKgopDMws05ViKF1wjilVATpicUlTLWpcXieYdGfED5OIoWLPZF 7azg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=hFN+yM4WCJUeicW8KR6rwDTmVoViQRFuPVsqkazL6O4=; b=atA4Gt+oH7p9PmxeB+617WwNQ0QvbUPCZ9ZqEdTVJx6KJSc39ZJ6Z4EZ+/jeT0YPzI Ecmeg83SI9Xie5ir5mK0Fc/M9Y4xHbX8SwZdtUMZyfb10hFjPdHWDhcwmSd5C4poVN2i Iz6MmL6QzZkcpO3X+u41bOQkRoOPOyJTbvTKg10XMFeSNWZ0GZPt5HYpoJAFTXMeF8Vj 583mFrSChKk3JXgvyz5uAqg7/uB9kVevw2mxkxwWqgs9KJnU2gAMAPTboFeCq9XYZLMT BT/kUz0OQQlynrl0+gWcc2mLPFD++X5Sdj09DhmstjvSQHqRxTtEHGAqfTwDKWI3H9o3 JUaw== X-Gm-Message-State: AHYfb5hJYM24XXPS7T76K3oiI7njQ6eOpk4hDu3oijTEfQyyZbj9vCEw u8pNyEVZRbzwRA== X-Received: by 10.25.83.139 with SMTP id h11mr4104273lfl.166.1502407296806; Thu, 10 Aug 2017 16:21:36 -0700 (PDT) Received: from localhost.localdomain (broadband-109-173-19-108.moscow.rt.ru. [109.173.19.108]) by smtp.gmail.com with ESMTPSA id g84sm1399994lfl.61.2017.08.10.16.21.35 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 10 Aug 2017 16:21:36 -0700 (PDT) From: Aleksandr Bezzubikov To: seabios@seabios.org Date: Fri, 11 Aug 2017 02:21:27 +0300 Message-Id: <1502407288-22226-3-git-send-email-zuban32s@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1502407288-22226-1-git-send-email-zuban32s@gmail.com> References: <1502407288-22226-1-git-send-email-zuban32s@gmail.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4010:c07::241 Subject: [Qemu-devel] [PATCH v5 2/3] pci: add QEMU-specific PCI capability structure X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mst@redhat.com, qemu-devel@nongnu.org, Aleksandr Bezzubikov , kevin@koconnor.net, kraxel@redhat.com, marcel@redhat.com, lersek@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" On PCI init PCI bridge devices may need some extra info about bus number to reserve, IO, memory and prefetchable memory limits. QEMU can provide this with special vendor-specific PCI capability. This capability is intended to be used only for Red Hat PCI bridges, i.e. QEMU cooperation. Signed-off-by: Aleksandr Bezzubikov --- src/fw/dev-pci.h | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 src/fw/dev-pci.h diff --git a/src/fw/dev-pci.h b/src/fw/dev-pci.h new file mode 100644 index 0000000..cf16b2e --- /dev/null +++ b/src/fw/dev-pci.h @@ -0,0 +1,52 @@ +#ifndef _PCI_CAP_H +#define _PCI_CAP_H + +#include "types.h" + +/* + * + * QEMU-specific vendor(Red Hat)-specific capability. + * It's intended to provide some hints for firmware to init PCI devices. + * + * Its structure is shown below: + * + * Header: + * + * u8 id; Standard PCI Capability Header field + * u8 next; Standard PCI Capability Header field + * u8 len; Standard PCI Capability Header field + * u8 type; Red Hat vendor-specific capability type + * Data: + * + * u32 bus_res; minimum bus number to reserve; + * this is necessary for PCI Express Root Ports + * to support PCI bridges hotplug + * u64 io; IO space to reserve + * u32 mem; non-prefetchable memory to reserve + * + * this two fields are mutually exclusive: + * u32 prefetchable_mem_32; prefetchable memory to reserve (32-bit MMIO) + * u64 prefetchable_mem_64; prefetchable memory to reserve (64-bit MMIO) + * + * + * If any field value in Data section is 0xFF...F, + * it means that such kind of reservation is not needed and must be ignored. + * +*/ + +/* Offset of vendor-specific capability type field */ +#define PCI_CAP_REDHAT_TYPE_OFFSET 3 + +/* List of valid Red Hat vendor-specific capability types */ +#define REDHAT_CAP_RESOURCE_RESERVE 1 + + +/* Offsets of RESOURCE_RESERVE capability fields */ +#define RES_RESERVE_BUS_RES 4 +#define RES_RESERVE_IO 8 +#define RES_RESERVE_MEM 16 +#define RES_RESERVE_PREF_MEM_32 20 +#define RES_RESERVE_PREF_MEM_64 24 +#define RES_RESERVE_CAP_SIZE 32 + +#endif /* _PCI_CAP_H */