From patchwork Tue Jun 22 08:57:46 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Isaku Yamahata X-Patchwork-Id: 56437 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [199.232.76.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id A63F6B6EF0 for ; Tue, 22 Jun 2010 19:13:59 +1000 (EST) Received: from localhost ([127.0.0.1]:32934 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OQzYI-00036K-Tq for incoming@patchwork.ozlabs.org; Tue, 22 Jun 2010 05:13:54 -0400 Received: from [140.186.70.92] (port=35007 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OQzPe-0007d3-Ni for qemu-devel@nongnu.org; Tue, 22 Jun 2010 05:04:59 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OQzMS-0002sj-NI for qemu-devel@nongnu.org; Tue, 22 Jun 2010 05:01:42 -0400 Received: from mail.valinux.co.jp ([210.128.90.3]:55557) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OQzMS-0002s4-9x for qemu-devel@nongnu.org; Tue, 22 Jun 2010 05:01:40 -0400 Received: from ps.local.valinux.co.jp (vagw.valinux.co.jp [210.128.90.14]) by mail.valinux.co.jp (Postfix) with SMTP id 3E62310742E; Tue, 22 Jun 2010 18:01:39 +0900 (JST) Received: (nullmailer pid 28812 invoked by uid 1000); Tue, 22 Jun 2010 08:57:53 -0000 From: Isaku Yamahata To: seabios@seabios.org Date: Tue, 22 Jun 2010 17:57:46 +0900 Message-Id: <6a0cf784e42b843673483ba6432adb00a85c5682.1277196704.git.yamahata@valinux.co.jp> X-Mailer: git-send-email 1.6.6.1 In-Reply-To: References: In-Reply-To: References: X-Virus-Scanned: clamav-milter 0.95.2 at va-mail.local.valinux.co.jp X-Virus-Status: Clean X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) Cc: stefano.stabellini@eu.citrix.com, jan.kiszka@siemens.com, mst@redhat.com, allen.m.kay@intel.com, qemu-devel@nongnu.org, yamahata@valinux.co.jp, jean.guyader@gmail.com Subject: [Qemu-devel] [PATCH v2 1/8] seabios: pci: introduce foreachpci_in_bus() helper macro. X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This patch introduces foreachpci_in_bus() helper macro for depth first recursion. foreachpci() is for width first recursion. The macro will be used later to initialize pci bridge that requires depth first recursion. Signed-off-by: Isaku Yamahata --- changes v1 -> v2: - simplified according to Kevin's suggestion. --- src/pci.h | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-) diff --git a/src/pci.h b/src/pci.h index 8a21c06..e40e116 100644 --- a/src/pci.h +++ b/src/pci.h @@ -21,6 +21,9 @@ static inline u8 pci_bdf_to_fn(u16 bdf) { static inline u16 pci_to_bdf(int bus, int dev, int fn) { return (bus<<8) | (dev<<3) | fn; } +static inline u16 pci_bus_devfn_to_bdf(int bus, u16 devfn) { + return (bus << 8) | devfn; +} static inline u32 pci_vd(u16 vendor, u16 device) { return (device << 16) | vendor; @@ -50,6 +53,13 @@ int pci_next(int bdf, int *pmax); ; BDF >= 0 \ ; BDF=pci_next(BDF+1, &MAX)) +#define foreachpci_in_bus(BDF, MAX, BUS) \ + for (MAX = pci_bus_devfn_to_bdf(BUS, 0) + 0x0100, \ + BDF = pci_next(pci_bus_devfn_to_bdf(BUS, 0), &MAX) \ + ; BDF >= 0 && BDF < pci_bus_devfn_to_bdf(BUS, 0) + 0x0100 \ + ; MAX = pci_bus_devfn_to_bdf(BUS, 0) + 0x0100, \ + BDF = pci_next(BDF + 1, &MAX)) + // pirtable.c void create_pirtable(void);