From patchwork Wed Jun 22 12:24:51 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Efimov Vasily X-Patchwork-Id: 639147 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org 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 3rZP9V0p8Rz9sdm for ; Wed, 22 Jun 2016 22:31:58 +1000 (AEST) Received: from localhost ([::1]:57931 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bFhJz-0001XT-U0 for incoming@patchwork.ozlabs.org; Wed, 22 Jun 2016 08:31:55 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49799) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bFhE4-0003NG-EK for qemu-devel@nongnu.org; Wed, 22 Jun 2016 08:25:49 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bFhE3-0001uW-BS for qemu-devel@nongnu.org; Wed, 22 Jun 2016 08:25:48 -0400 Received: from smtp.ispras.ru ([83.149.199.79]:37772) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bFhDu-0001oK-1q; Wed, 22 Jun 2016 08:25:38 -0400 Received: from real.intra.ispras.ru (unknown [83.149.199.91]) by smtp.ispras.ru (Postfix) with ESMTP id 8CAD82040E; Wed, 22 Jun 2016 15:25:06 +0300 (MSK) From: Efimov Vasily To: qemu-devel@nongnu.org Date: Wed, 22 Jun 2016 15:24:51 +0300 Message-Id: <1466598298-21214-8-git-send-email-real@ispras.ru> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1466598298-21214-1-git-send-email-real@ispras.ru> References: <1466598298-21214-1-git-send-email-real@ispras.ru> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 83.149.199.79 Subject: [Qemu-devel] [PATCH v2 07/14] pckbd: handle A20 IRQ as GPIO 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: Kevin Wolf , Peter Maydell , Eduardo Habkost , qemu-block@nongnu.org, "Michael S. Tsirkin" , Markus Armbruster , Efimov Vasily , Max Reitz , =?UTF-8?q?Herv=C3=A9=20Poussineau?= , Gerd Hoffmann , Marcel Apfelbaum , Paolo Bonzini , Kirill Batuzov , John Snow , Richard Henderson Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The i8042 device has outgouing IRQ line A20. Currently the IRQ is referenced by a pointer which normally is set during machine initialization. The pointer is never changed at runtime. So common GPIO model can be applied to A20 IRQ line. Note that checking for IRQ to be connected as in previous version of code is not required because qemu_set_irq will do it. Signed-off-by: Efimov Vasily --- hw/input/pckbd.c | 21 +++++++-------------- include/hw/i386/pc.h | 1 + 2 files changed, 8 insertions(+), 14 deletions(-) diff --git a/hw/input/pckbd.c b/hw/input/pckbd.c index 1d932ec..dc57e2c 100644 --- a/hw/input/pckbd.c +++ b/hw/input/pckbd.c @@ -146,7 +146,7 @@ typedef struct KBDState { qemu_irq irq_kbd; qemu_irq irq_mouse; - qemu_irq *a20_out; + qemu_irq a20_out; hwaddr mask; } KBDState; @@ -224,9 +224,7 @@ static void outport_write(KBDState *s, uint32_t val) { DPRINTF("kbd: write outport=0x%02x\n", val); s->outport = val; - if (s->a20_out) { - qemu_set_irq(*s->a20_out, (val >> 1) & 1); - } + qemu_set_irq(s->a20_out, (val >> 1) & 1); if (!(val & 1)) { qemu_system_reset_request(); } @@ -295,15 +293,11 @@ static void kbd_write_command(void *opaque, hwaddr addr, kbd_queue(s, s->outport, 0); break; case KBD_CCMD_ENABLE_A20: - if (s->a20_out) { - qemu_irq_raise(*s->a20_out); - } + qemu_irq_raise(s->a20_out); s->outport |= KBD_OUT_A20; break; case KBD_CCMD_DISABLE_A20: - if (s->a20_out) { - qemu_irq_lower(*s->a20_out); - } + qemu_irq_lower(s->a20_out); s->outport &= ~KBD_OUT_A20; break; case KBD_CCMD_RESET: @@ -507,10 +501,7 @@ void i8042_isa_mouse_fake_event(void *opaque) void i8042_setup_a20_line(ISADevice *dev, qemu_irq *a20_out) { - ISAKBDState *isa = I8042(dev); - KBDState *s = &isa->kbd; - - s->a20_out = a20_out; + qdev_connect_gpio_out_named(DEVICE(dev), I8042_A20_LINE, 0, *a20_out); } static const VMStateDescription vmstate_kbd_isa = { @@ -552,6 +543,8 @@ static void i8042_initfn(Object *obj) "i8042-data", 1); memory_region_init_io(isa_s->io + 1, obj, &i8042_cmd_ops, s, "i8042-cmd", 1); + + qdev_init_gpio_out_named(DEVICE(obj), &s->a20_out, I8042_A20_LINE, 1); } static void i8042_realizefn(DeviceState *dev, Error **errp) diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index 1e4e383..d615727 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -212,6 +212,7 @@ void vmmouse_get_data(uint32_t *data); void vmmouse_set_data(const uint32_t *data); /* pckbd.c */ +#define I8042_A20_LINE "a20" void i8042_init(qemu_irq kbd_irq, qemu_irq mouse_irq, uint32_t io_base); void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq,