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authorLucas Meneghel Rodrigues <lmr@redhat.com>2012-12-13 12:48:53 -0200
committerGerd Hoffmann <kraxel@redhat.com>2013-01-04 09:11:30 +0100
commitee0cc5415e6edc043bd84e855f7d0bf85bd97547 (patch)
tree34676a2076b588572d11029b8a39489c588919ce
parentbb355b1859dde19fbb4f856c6d0b8f46733142d7 (diff)
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hw: Add test device for unittests execution
Add a test device which supports the kvmctl ioports, so one can run the KVM unittest suite. Intended Usage: qemu-system-x86_64 -nographic \ -device pc-testdev \ -device isa-debug-exit,iobase=0xf4,iosize=0x04 \ -kernel /path/to/kvm/unittests/msr.flat Where msr.flat is one of the KVM unittests, present on a separate repo, git://git.kernel.org/pub/scm/virt/kvm/kvm-unit-tests.git [ kraxel: more memory api + qom fixes ] CC: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
-rw-r--r--hw/i386/Makefile.objs1
-rw-r--r--hw/pc-testdev.c182
2 files changed, 183 insertions, 0 deletions
diff --git a/hw/i386/Makefile.objs b/hw/i386/Makefile.objs
index 2ba04db..025803a 100644
--- a/hw/i386/Makefile.objs
+++ b/hw/i386/Makefile.objs
@@ -12,5 +12,6 @@ obj-$(CONFIG_XEN_PCI_PASSTHROUGH) += xen-host-pci-device.o
obj-$(CONFIG_XEN_PCI_PASSTHROUGH) += xen_pt.o xen_pt_config_init.o xen_pt_msi.o
obj-y += kvm/
obj-$(CONFIG_SPICE) += qxl.o qxl-logger.o qxl-render.o
+obj-y += pc-testdev.o
obj-y := $(addprefix ../,$(obj-y))
diff --git a/hw/pc-testdev.c b/hw/pc-testdev.c
new file mode 100644
index 0000000..620c86c
--- /dev/null
+++ b/hw/pc-testdev.c
@@ -0,0 +1,182 @@
+/*
+ * QEMU x86 ISA testdev
+ *
+ * Copyright (c) 2012 Avi Kivity, Gerd Hoffmann, Marcelo Tosatti
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/*
+ * This device is used to test KVM features specific to the x86 port, such
+ * as emulation, power management, interrupt routing, among others. It's meant
+ * to be used like:
+ *
+ * qemu-system-x86_64 -device pc-testdev -serial stdio \
+ * -device isa-debug-exit,iobase=0xf4,iosize=0x4 \
+ * -kernel /home/lmr/Code/virt-test.git/kvm/unittests/msr.flat
+ *
+ * Where msr.flat is one of the KVM unittests, present on a separate repo,
+ * git://git.kernel.org/pub/scm/virt/kvm/kvm-unit-tests.git
+*/
+
+#include <sys/mman.h>
+#include "hw.h"
+#include "qdev.h"
+#include "isa.h"
+
+#define IOMEM_LEN 0x10000
+
+typedef struct PCTestdev {
+ ISADevice parent_obj;
+
+ MemoryRegion ioport;
+ MemoryRegion flush;
+ MemoryRegion irq;
+ MemoryRegion iomem;
+ uint32_t ioport_data;
+ char iomem_buf[IOMEM_LEN];
+} PCTestdev;
+
+#define TYPE_TESTDEV "pc-testdev"
+#define TESTDEV(obj) \
+ OBJECT_CHECK(struct PCTestdev, (obj), TYPE_TESTDEV)
+
+static void test_irq_line(void *opaque, hwaddr addr, uint64_t data,
+ unsigned len)
+{
+ struct PCTestdev *dev = opaque;
+ struct ISADevice *isa = ISA_DEVICE(dev);
+
+ qemu_set_irq(isa_get_irq(isa, addr), !!data);
+}
+
+static const MemoryRegionOps test_irq_ops = {
+ .write = test_irq_line,
+ .valid.min_access_size = 1,
+ .valid.max_access_size = 1,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static void test_ioport_write(void *opaque, hwaddr addr, uint64_t data,
+ unsigned len)
+{
+ struct PCTestdev *dev = opaque;
+ dev->ioport_data = data;
+}
+
+static uint64_t test_ioport_read(void *opaque, hwaddr addr, unsigned len)
+{
+ struct PCTestdev *dev = opaque;
+ return dev->ioport_data;
+}
+
+static const MemoryRegionOps test_ioport_ops = {
+ .read = test_ioport_read,
+ .write = test_ioport_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static void test_flush_page(void *opaque, hwaddr addr, uint64_t data,
+ unsigned len)
+{
+ hwaddr page = 4096;
+ void *a = cpu_physical_memory_map(data & ~0xffful, &page, 0);
+
+ /* We might not be able to get the full page, only mprotect what we actually
+ have mapped */
+ mprotect(a, page, PROT_NONE);
+ mprotect(a, page, PROT_READ|PROT_WRITE);
+ cpu_physical_memory_unmap(a, page, 0, 0);
+}
+
+static const MemoryRegionOps test_flush_ops = {
+ .write = test_flush_page,
+ .valid.min_access_size = 4,
+ .valid.max_access_size = 4,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static uint64_t test_iomem_read(void *opaque, hwaddr addr, unsigned len)
+{
+ struct PCTestdev *dev = opaque;
+ uint64_t ret = 0;
+ memcpy(&ret, &dev->iomem_buf[addr], len);
+ ret = le64_to_cpu(ret);
+
+ return ret;
+}
+
+static void test_iomem_write(void *opaque, hwaddr addr, uint64_t val,
+ unsigned len)
+{
+ struct PCTestdev *dev = opaque;
+ val = cpu_to_le64(val);
+ memcpy(&dev->iomem_buf[addr], &val, len);
+ dev->iomem_buf[addr] = val;
+}
+
+static const MemoryRegionOps test_iomem_ops = {
+ .read = test_iomem_read,
+ .write = test_iomem_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static int init_test_device(ISADevice *isa)
+{
+ struct PCTestdev *dev = TESTDEV(isa);
+ MemoryRegion *mem = isa_address_space(isa);
+ MemoryRegion *io = isa_address_space_io(isa);
+
+ memory_region_init_io(&dev->ioport, &test_ioport_ops, dev,
+ "pc-testdev-ioport", 4);
+ memory_region_init_io(&dev->flush, &test_flush_ops, dev,
+ "pc-testdev-flush-page", 4);
+ memory_region_init_io(&dev->irq, &test_irq_ops, dev,
+ "pc-testdev-irq-line", 24);
+ memory_region_init_io(&dev->iomem, &test_iomem_ops, dev,
+ "pc-testdev-iomem", IOMEM_LEN);
+
+ memory_region_add_subregion(io, 0xe0, &dev->ioport);
+ memory_region_add_subregion(io, 0xe4, &dev->flush);
+ memory_region_add_subregion(io, 0x2000, &dev->irq);
+ memory_region_add_subregion(mem, 0xff000000, &dev->iomem);
+
+ return 0;
+}
+
+static void testdev_class_init(ObjectClass *klass, void *data)
+{
+ ISADeviceClass *k = ISA_DEVICE_CLASS(klass);
+
+ k->init = init_test_device;
+}
+
+static TypeInfo testdev_info = {
+ .name = TYPE_TESTDEV,
+ .parent = TYPE_ISA_DEVICE,
+ .instance_size = sizeof(struct PCTestdev),
+ .class_init = testdev_class_init,
+};
+
+static void testdev_register_types(void)
+{
+ type_register_static(&testdev_info);
+}
+
+type_init(testdev_register_types)