From patchwork Fri Apr 1 11:43:21 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Isaku Yamahata X-Patchwork-Id: 89247 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 87B9EB6F8A for ; Fri, 1 Apr 2011 22:44:57 +1100 (EST) Received: from localhost ([127.0.0.1]:48263 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Q5cma-0002A2-AH for incoming@patchwork.ozlabs.org; Fri, 01 Apr 2011 07:44:52 -0400 Received: from [140.186.70.92] (port=42928 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Q5clJ-00029f-7a for qemu-devel@nongnu.org; Fri, 01 Apr 2011 07:43:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Q5clF-0004vE-V1 for qemu-devel@nongnu.org; Fri, 01 Apr 2011 07:43:33 -0400 Received: from mail.valinux.co.jp ([210.128.90.3]:52009) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Q5clF-0004uc-Jh for qemu-devel@nongnu.org; Fri, 01 Apr 2011 07:43:29 -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 5A8952800A; Fri, 1 Apr 2011 20:43:25 +0900 (JST) Received: (nullmailer pid 20786 invoked by uid 1000); Fri, 01 Apr 2011 11:43:24 -0000 From: Isaku Yamahata To: qemu-devel@nongnu.org Date: Fri, 1 Apr 2011 20:43:21 +0900 Message-Id: <5586b68bd389a837f2637fef5eb3508354ab5500.1301657711.git.yamahata@valinux.co.jp> X-Mailer: git-send-email 1.7.1.1 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) X-Received-From: 210.128.90.3 Cc: yamahata@valinux.co.jp, mst@redhat.com Subject: [Qemu-devel] [PATCH v7 1/4] pci: add accessor function to get irq levels 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 Introduce accessor function to know INTx levels. It will be used later by q35. Although piix_pci tracks the intx line levels, it can be eliminated by this helper function. Cc: Michael S. Tsirkin Signed-off-by: Isaku Yamahata --- hw/pci.c | 7 +++++++ hw/pci.h | 1 + 2 files changed, 8 insertions(+), 0 deletions(-) diff --git a/hw/pci.c b/hw/pci.c index 6b577e1..3ee4871 100644 --- a/hw/pci.c +++ b/hw/pci.c @@ -126,6 +126,13 @@ static void pci_change_irq_level(PCIDevice *pci_dev, int irq_num, int change) bus->set_irq(bus->irq_opaque, irq_num, bus->irq_count[irq_num] != 0); } +int pci_bus_get_irq_level(PCIBus *bus, int irq_num) +{ + assert(irq_num >= 0); + assert(irq_num < bus->nirq); + return !!bus->irq_count[irq_num]; +} + /* Update interrupt status bit in config space on interrupt * state change. */ static void pci_update_irq_status(PCIDevice *dev) diff --git a/hw/pci.h b/hw/pci.h index 52ee8c9..a5f875d 100644 --- a/hw/pci.h +++ b/hw/pci.h @@ -234,6 +234,7 @@ void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent, PCIBus *pci_bus_new(DeviceState *parent, const char *name, uint8_t devfn_min); void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, void *irq_opaque, int nirq); +int pci_bus_get_irq_level(PCIBus *bus, int irq_num); void pci_bus_hotplug(PCIBus *bus, pci_hotplug_fn hotplug, DeviceState *dev); PCIBus *pci_register_bus(DeviceState *parent, const char *name, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,