[QEMU-KVM,01/34] Add test device

Commit Message

Avi Kivity Sept. 16, 2009, 9:25 a.m. UTC

From: Gerd Hoffmann <[e-mail]>

Add a test device which supports the kvmctl ioports, for running the test
suite.

Usage:

  qemu
     -chardev file,path=/log/file/some/where,id=testlog
     -device testdev,chardev=testlog

Signed-off-by: Gerd Hoffmann <[e-mail]>
Signed-off-by: Avi Kivity <[e-mail]>
---
 Makefile.target |    1 +
 hw/testdev.c    |   55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+), 0 deletions(-)
 create mode 100644 hw/testdev.c

Patch

diff --git a/Makefile.target b/Makefile.target
index c8c9568..a08e432 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -216,6 +216,7 @@  obj-i386-y += device-hotplug.o pci-hotplug.o smbios.o wdt_ib700.o
 obj-i386-y += extboot.o
 obj-i386-y += piix4.o
 obj-i386-y += ne2000-isa.o
+obj-i386-y += testdev.o
 ifeq ($(USE_KVM_PIT), 1)
 obj-i386-y += i8254-kvm.o
 endif
diff --git a/hw/testdev.c b/hw/testdev.c
new file mode 100644
index 0000000..199731e
--- /dev/null
+++ b/hw/testdev.c
@@ -0,0 +1,55 @@ 
+#include "hw.h"
+#include "qdev.h"
+#include "isa.h"
+
+struct testdev {
+    ISADevice dev;
+    CharDriverState *chr;
+};
+
+static void test_device_serial_write(void *opaque, uint32_t addr, uint32_t data)
+{
+    struct testdev *dev = opaque;
+    uint8_t buf[1] = { data };
+
+    if (dev->chr) {
+        qemu_chr_write(dev->chr, buf, 1);
+    }
+}
+
+static void test_device_exit(void *opaque, uint32_t addr, uint32_t data)
+{
+    exit(data);
+}
+
+static uint32_t test_device_memsize_read(void *opaque, uint32_t addr)
+{
+    return ram_size;
+}
+
+static int init_test_device(ISADevice *isa)
+{
+    struct testdev *dev = DO_UPCAST(struct testdev, dev, isa);
+
+    register_ioport_write(0xf1, 1, 1, test_device_serial_write, dev);
+    register_ioport_write(0xf4, 1, 4, test_device_exit, dev);
+    register_ioport_read(0xd1, 1, 4, test_device_memsize_read, dev);
+    return 0;
+}
+
+static ISADeviceInfo testdev_info = {
+    .qdev.name  = "testdev",
+    .qdev.size  = sizeof(struct testdev),
+    .init       = init_test_device,
+    .qdev.props = (Property[]) {
+        DEFINE_PROP_CHR("chardev", struct testdev, chr),
+        DEFINE_PROP_END_OF_LIST(),
+    },
+};
+
+static void testdev_register_devices(void)
+{
+    isa_qdev_register(&testdev_info);
+}
+
+device_init(testdev_register_devices)