From patchwork Fri Jan 4 08:16:02 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gerd Hoffmann X-Patchwork-Id: 209374 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id CFFE62C007B for ; Fri, 4 Jan 2013 19:16:23 +1100 (EST) Received: from localhost ([::1]:38295 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Tr2Rx-0000Ui-Pt for incoming@patchwork.ozlabs.org; Fri, 04 Jan 2013 03:16:21 -0500 Received: from eggs.gnu.org ([208.118.235.92]:59411) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Tr2Rl-0000UJ-Tg for qemu-devel@nongnu.org; Fri, 04 Jan 2013 03:16:11 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Tr2Rj-0005J9-NZ for qemu-devel@nongnu.org; Fri, 04 Jan 2013 03:16:09 -0500 Received: from mx1.redhat.com ([209.132.183.28]:57366) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Tr2Rj-0005IW-Ft for qemu-devel@nongnu.org; Fri, 04 Jan 2013 03:16:07 -0500 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r048G6NZ004719 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Fri, 4 Jan 2013 03:16:06 -0500 Received: from rincewind.home.kraxel.org (ovpn-116-25.ams2.redhat.com [10.36.116.25]) by int-mx02.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id r048G5KN028072; Fri, 4 Jan 2013 03:16:06 -0500 Received: by rincewind.home.kraxel.org (Postfix, from userid 500) id EC831408B6; Fri, 4 Jan 2013 09:16:04 +0100 (CET) From: Gerd Hoffmann To: qemu-devel@nongnu.org Date: Fri, 4 Jan 2013 09:16:02 +0100 Message-Id: <1357287364-24921-3-git-send-email-kraxel@redhat.com> In-Reply-To: <1357287364-24921-1-git-send-email-kraxel@redhat.com> References: <1357287364-24921-1-git-send-email-kraxel@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.12 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: Gerd Hoffmann Subject: [Qemu-devel] [PATCH 2/4] add isa-debug-exit device. X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org When present it makes qemu exit on any write. Mapped to port 0x501 by default. Without this patch Anthony doesn't allow me to remove the bochs bios debug ports because his test suite uses this. Signed-off-by: Gerd Hoffmann --- hw/debugexit.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++++ hw/i386/Makefile.objs | 2 +- 2 files changed, 76 insertions(+), 1 deletions(-) create mode 100644 hw/debugexit.c diff --git a/hw/debugexit.c b/hw/debugexit.c new file mode 100644 index 0000000..90642eb --- /dev/null +++ b/hw/debugexit.c @@ -0,0 +1,75 @@ +/* + * debug exit port emulation + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 or + * (at your option) any later version. + */ + +#include "hw.h" +#include "isa.h" + +#define TYPE_ISA_DEBUG_EXIT_DEVICE "isa-debug-exit" +#define ISA_DEBUG_EXIT_DEVICE(obj) \ + OBJECT_CHECK(ISADebugExitState, (obj), TYPE_ISA_DEBUG_EXIT_DEVICE) + +typedef struct ISADebugExitState { + ISADevice parent_obj; + + uint32_t iobase; + uint32_t iosize; + MemoryRegion io; +} ISADebugExitState; + +static void debug_exit_write(void *opaque, hwaddr addr, uint64_t val, + unsigned width) +{ + exit((val << 1) | 1); +} + +static const MemoryRegionOps debug_exit_ops = { + .write = debug_exit_write, + .valid.min_access_size = 1, + .valid.max_access_size = 4, + .endianness = DEVICE_LITTLE_ENDIAN, +}; + +static int debug_exit_initfn(ISADevice *dev) +{ + ISADebugExitState *isa = ISA_DEBUG_EXIT_DEVICE(dev); + + memory_region_init_io(&isa->io, &debug_exit_ops, isa, + TYPE_ISA_DEBUG_EXIT_DEVICE, isa->iosize); + memory_region_add_subregion(isa_address_space_io(dev), + isa->iobase, &isa->io); + return 0; +} + +static Property debug_exit_properties[] = { + DEFINE_PROP_HEX32("iobase", ISADebugExitState, iobase, 0x501), + DEFINE_PROP_HEX32("iosize", ISADebugExitState, iosize, 0x02), + DEFINE_PROP_END_OF_LIST(), +}; + +static void debug_exit_class_initfn(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + ISADeviceClass *ic = ISA_DEVICE_CLASS(klass); + ic->init = debug_exit_initfn; + dc->props = debug_exit_properties; +} + +static TypeInfo debug_exit_info = { + .name = TYPE_ISA_DEBUG_EXIT_DEVICE, + .parent = TYPE_ISA_DEVICE, + .instance_size = sizeof(ISADebugExitState), + .class_init = debug_exit_class_initfn, +}; + +static void debug_exit_register_types(void) +{ + type_register_static(&debug_exit_info); +} + +type_init(debug_exit_register_types) diff --git a/hw/i386/Makefile.objs b/hw/i386/Makefile.objs index 257f3c1..2ba04db 100644 --- a/hw/i386/Makefile.objs +++ b/hw/i386/Makefile.objs @@ -3,7 +3,7 @@ obj-y += apic_common.o apic.o kvmvapic.o obj-y += sga.o ioapic_common.o ioapic.o piix_pci.o obj-y += vmport.o obj-y += pci/pci-hotplug.o smbios.o wdt_ib700.o -obj-y += debugcon.o multiboot.o +obj-y += debugcon.o debugexit.o multiboot.o obj-y += pc_piix.o obj-y += pc_sysfw.o obj-y += lpc_ich9.o q35.o pc_q35.o