From: Lucas Meneghel Rodrigues <lmr@redhat.com>
To: qemu-devel@nongnu.org
Cc: jan.kiszka@siemens.com, kraxel@redhat.com
Subject: [Qemu-devel] [PATCH 1/2] hw: add isa-debug-exit device
Date: Thu, 13 Dec 2012 12:48:51 -0200 [thread overview]
Message-ID: <1355410133-3281-2-git-send-email-lmr@redhat.com> (raw)
In-Reply-To: <1355410133-3281-1-git-send-email-lmr@redhat.com>
From: Gerd Hoffmann <kraxel@redhat.com>
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.
Changes from v1: Add access_size property to the
device, needed for kvm-unit-tests.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
hw/debugexit.c | 73 +++++++++++++++++++++++++++++++++++++++++++++++++
hw/i386/Makefile.objs | 2 +-
2 files changed, 74 insertions(+), 1 deletion(-)
create mode 100644 hw/debugexit.c
diff --git a/hw/debugexit.c b/hw/debugexit.c
new file mode 100644
index 0000000..dfe1b2d
--- /dev/null
+++ b/hw/debugexit.c
@@ -0,0 +1,73 @@
+/*
+ * 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) version 3 of the License.
+ */
+
+#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;
+ uint8_t access_size;
+ 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 = 1,
+ .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->access_size);
+ 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_UINT8("access-size", ISADebugExitState, access_size, 1),
+ 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 0d3f6a8..56aaa9d 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-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
--
1.7.10.4
next prev parent reply other threads:[~2012-12-13 14:49 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-13 14:48 [Qemu-devel] [PATCH 0/2] Add pc-testdev to qemu v6 Lucas Meneghel Rodrigues
2012-12-13 14:48 ` Lucas Meneghel Rodrigues [this message]
2012-12-13 14:48 ` [Qemu-devel] [PATCH 1/2] hw: add isa-debug-exit device v3 Lucas Meneghel Rodrigues
2012-12-13 15:40 ` Andreas Färber
2012-12-13 22:13 ` Hervé Poussineau
2012-12-19 1:41 ` Lucas Meneghel
2012-12-19 8:49 ` Gerd Hoffmann
2012-12-13 14:48 ` [Qemu-devel] [PATCH 2/2] hw: Add test device for unittests execution v6 Lucas Meneghel Rodrigues
2012-12-13 15:54 ` Jan Kiszka
-- strict thread matches above, loose matches on Subject: below --
2012-12-13 14:47 [Qemu-devel] [PATCH 0/2] Add pc-testdev to qemu v6 Lucas Meneghel Rodrigues
2012-12-13 14:47 ` [Qemu-devel] [PATCH 1/2] hw: add isa-debug-exit device Lucas Meneghel Rodrigues
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