From: Philippe Mathieu-Daudé Date: Thu, 14 Nov 2024 17:46:36 +0000 (+0100) Subject: hw/net/xilinx_ethlite: Map RESERVED I/O as unimplemented X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=74f1caa8c33f608168c4224bb23d9a6453224a56;p=qemu.git hw/net/xilinx_ethlite: Map RESERVED I/O as unimplemented 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 Reviewed-by: Alex Bennée Message-Id: <20241114210010.34502-20-philmd@linaro.org> --- diff --git a/hw/net/xilinx_ethlite.c b/hw/net/xilinx_ethlite.c index a7f6d1b368..14bf2b2e17 100644 --- a/hw/net/xilinx_ethlite.c +++ b/hw/net/xilinx_ethlite.c @@ -94,6 +94,7 @@ struct XlnxXpsEthLite uint32_t c_rx_pingpong; unsigned int port_index; /* dual port RAM index */ + UnimplementedDeviceState rsvd; UnimplementedDeviceState mdio; XlnxXpsEthLitePort port[2]; }; @@ -303,6 +304,16 @@ 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");