In order to track access to reserved I/O space, use yet
another UnimplementedDevice covering the whole device
memory range. Mapped with lower priority (-1).
The memory flat view becomes:
(qemu) info mtree -f
FlatView #0
Root memory region: system
0000000081000000-00000000810007e3 (prio 0, ram): ethlite.tx[0]buf
00000000810007e4-00000000810007f3 (prio 0, i/o): ethlite.mdio
00000000810007f4-00000000810007ff (prio 0, i/o): ethlite.tx[0]io
0000000081000800-0000000081000fe3 (prio 0, ram): ethlite.tx[1]buf
0000000081000fe4-0000000081000ff3 (prio -1, i/o): ethlite.reserved
@0000000000000fe4
0000000081000ff4-0000000081000fff (prio 0, i/o): ethlite.tx[1]io
0000000081001000-00000000810017e3 (prio 0, ram): ethlite.rx[0]buf
00000000810017e4-00000000810017fb (prio -1, i/o): ethlite.reserved
@00000000000017e4
00000000810017fc-00000000810017ff (prio 0, i/o): ethlite.rx[0]io
0000000081001800-0000000081001fe3 (prio 0, ram): ethlite.rx[1]buf
0000000081001fe4-0000000081001ffb (prio -1, i/o): ethlite.reserved
@0000000000001fe4
0000000081001ffc-0000000081001fff (prio 0, i/o): ethlite.rx[1]io
Signed-off-by: Philippe Mathieu-Daudé <phi...@linaro.org>
---
hw/net/xilinx_ethlite.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/hw/net/xilinx_ethlite.c b/hw/net/xilinx_ethlite.c
index 5f1ff7b712..1be38c44dd 100644
--- a/hw/net/xilinx_ethlite.c
+++ b/hw/net/xilinx_ethlite.c
@@ -95,6 +95,7 @@ struct XlnxXpsEthLite
uint32_t c_rx_pingpong;
unsigned int port_index; /* dual port RAM index */
+ UnimplementedDeviceState rsvd;
UnimplementedDeviceState mdio;
XlnxXpsEthLitePort port[2];
};
@@ -304,6 +305,16 @@ static void xilinx_ethlite_realize(DeviceState *dev, Error
**errp)
memory_region_init(&s->container, OBJECT(dev),
"xlnx.xps-ethernetlite", 0x2000);
+ object_initialize_child(OBJECT(dev), "ethlite.reserved", &s->rsvd,
+ TYPE_UNIMPLEMENTED_DEVICE);
+ qdev_prop_set_string(DEVICE(&s->rsvd), "name", "ethlite.reserved");
+ qdev_prop_set_uint64(DEVICE(&s->rsvd), "size",
+ memory_region_size(&s->container));
+ sysbus_realize(SYS_BUS_DEVICE(&s->rsvd), &error_fatal);
+ memory_region_add_subregion_overlap(&s->container, 0,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->rsvd), 0),
+ -1);
+
object_initialize_child(OBJECT(dev), "ethlite.mdio", &s->mdio,
TYPE_UNIMPLEMENTED_DEVICE);
qdev_prop_set_string(DEVICE(&s->mdio), "name", "ethlite.mdio");
--
2.45.2
