From patchwork Thu Mar 17 13:49:51 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Isaku Yamahata X-Patchwork-Id: 87375 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 083C4B6FAB for ; Fri, 18 Mar 2011 00:51:03 +1100 (EST) Received: from localhost ([127.0.0.1]:46216 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Q0DbQ-0000YH-BT for incoming@patchwork.ozlabs.org; Thu, 17 Mar 2011 09:51:00 -0400 Received: from [140.186.70.92] (port=55621 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Q0DaS-0000WE-Nj for qemu-devel@nongnu.org; Thu, 17 Mar 2011 09:50:01 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Q0DaR-0000j5-09 for qemu-devel@nongnu.org; Thu, 17 Mar 2011 09:50:00 -0400 Received: from mail.valinux.co.jp ([210.128.90.3]:36907) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Q0DaQ-0000gd-Iw for qemu-devel@nongnu.org; Thu, 17 Mar 2011 09:49:58 -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 9128F18905; Thu, 17 Mar 2011 22:49:53 +0900 (JST) Received: (nullmailer pid 5160 invoked by uid 1000); Thu, 17 Mar 2011 13:49:53 -0000 From: Isaku Yamahata To: qemu-devel@nongnu.org Date: Thu, 17 Mar 2011 22:49:51 +0900 Message-Id: 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 1/3] 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 d6c5e66..67cb3d7 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 46b3ad3..f523722 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, int 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); /* 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD */ int pci_swizzle_map_irq_fn(void *opaque, PCIDevice *pci_dev, int pin);