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pc-testdev: add I/O port to test memory.c auto split/combine

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The ports at 0xe8..0xeb have impl.min/max_access_size == 1, so
that memory accesses are split and combined by the memory core.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Message-id: 1374501278-31549-29-git-send-email-pbonzini@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Paolo Bonzini 2013-07-22 15:54:38 +02:00 • committed by Anthony Liguori
parent e7342aa39b
commit d2f5ea9704
2 changed files with 117 additions and 0 deletions
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15
hw/misc/pc-testdev.c
View file

@ -49,6 +49,7 @@ typedef struct PCTestdev {
ISADevice parent_obj;
MemoryRegion ioport;
MemoryRegion ioport_byte;
MemoryRegion flush;
MemoryRegion irq;
MemoryRegion iomem;
@ -102,6 +103,16 @@ static const MemoryRegionOps test_ioport_ops = {
.endianness = DEVICE_LITTLE_ENDIAN,
};
static const MemoryRegionOps test_ioport_byte_ops = {
.read = test_ioport_read,
.write = test_ioport_write,
.valid.min_access_size = 1,
.valid.max_access_size = 4,
.impl.min_access_size = 1,
.impl.max_access_size = 1,
.endianness = DEVICE_LITTLE_ENDIAN,
};
static void test_flush_page(void *opaque, hwaddr addr, uint64_t data,
unsigned len)
{
@ -156,6 +167,9 @@ static void testdev_realizefn(DeviceState *d, Error **errp)
memory_region_init_io(&dev->ioport, OBJECT(dev), &test_ioport_ops, dev,
"pc-testdev-ioport", 4);
memory_region_init_io(&dev->ioport_byte, OBJECT(dev),
&test_ioport_byte_ops, dev,
"pc-testdev-ioport-byte", 4);
memory_region_init_io(&dev->flush, OBJECT(dev), &test_flush_ops, dev,
"pc-testdev-flush-page", 4);
memory_region_init_io(&dev->irq, OBJECT(dev), &test_irq_ops, dev,
@ -165,6 +179,7 @@ static void testdev_realizefn(DeviceState *d, Error **errp)
memory_region_add_subregion(io, 0xe0, &dev->ioport);
memory_region_add_subregion(io, 0xe4, &dev->flush);
memory_region_add_subregion(io, 0xe8, &dev->ioport_byte);
memory_region_add_subregion(io, 0x2000, &dev->irq);
memory_region_add_subregion(mem, 0xff000000, &dev->iomem);
}