From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:47230) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QUH16-0003Yi-RH for qemu-devel@nongnu.org; Wed, 08 Jun 2011 07:33:46 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QUH15-0006n2-7w for qemu-devel@nongnu.org; Wed, 08 Jun 2011 07:33:44 -0400 Received: from mnementh.archaic.org.uk ([81.2.115.146]:44379) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QUH14-0006ma-Gv for qemu-devel@nongnu.org; Wed, 08 Jun 2011 07:33:42 -0400 From: Peter Maydell Date: Wed, 8 Jun 2011 12:33:33 +0100 Message-Id: <1307532813-27175-4-git-send-email-peter.maydell@linaro.org> In-Reply-To: <1307532813-27175-1-git-send-email-peter.maydell@linaro.org> References: <1307532813-27175-1-git-send-email-peter.maydell@linaro.org> Subject: [Qemu-devel] [PATCH RFC 3/3] sysbus: Allow passthrough of single IRQ List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Markus Armbruster , Anthony Liguori , =?UTF-8?q?Juha=20Riihim=C3=A4ki?= , Paul Brook , patches@linaro.org Add a sysbus_pass_one_irq() function to allow one sysbus device to pass a single IRQ through to another. (It is already possible to delegate all your IRQs to another device with sysbus_pass_irq().) Signed-off-by: Peter Maydell --- hw/sysbus.c | 9 +++++++++ hw/sysbus.h | 1 + 2 files changed, 10 insertions(+), 0 deletions(-) diff --git a/hw/sysbus.c b/hw/sysbus.c index 793b0c1..8211e8f 100644 --- a/hw/sysbus.c +++ b/hw/sysbus.c @@ -134,6 +134,15 @@ void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target) } } +void sysbus_pass_one_irq(SysBusDevice *dev, SysBusDevice *target, int tn) +{ + int n; + + assert(dev->num_irq < QDEV_MAX_IRQ); + n = dev->num_irq++; + dev->irqp[n] = target->irqp[tn]; +} + void sysbus_init_mmio(SysBusDevice *dev, target_phys_addr_t size, ram_addr_t iofunc) { diff --git a/hw/sysbus.h b/hw/sysbus.h index 789e4c5..a6a873c 100644 --- a/hw/sysbus.h +++ b/hw/sysbus.h @@ -51,6 +51,7 @@ void sysbus_init_mmio_cb(SysBusDevice *dev, target_phys_addr_t size, void sysbus_pass_mmio(SysBusDevice *dev, SysBusDevice *target, int target_mmio); void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p); void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target); +void sysbus_pass_one_irq(SysBusDevice *dev, SysBusDevice *target, int tn); void sysbus_init_ioports(SysBusDevice *dev, pio_addr_t ioport, pio_addr_t size); -- 1.7.1