Commit 9cd1e97a authored by Mark Cave-Ayland's avatar Mark Cave-Ayland Committed by Michael S. Tsirkin
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pci: allow 32-bit PCI IO accesses to pass through the PCI bridge 



Whilst the underlying PCI bridge implementation supports 32-bit PCI IO
accesses, unfortunately they are truncated at the legacy 64K limit.

Signed-off-by: default avatarMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: default avatarRichard Henderson <richard.henderson@linaro.org>
Reviewed-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 5c0ba1be

hw/pci/pci_bridge.c

+2 −1
Original line number Diff line number Diff line
@@ -379,7 +379,8 @@ void pci_bridge_initfn(PCIDevice *dev, const char *typename) 
    sec_bus->address_space_mem = &br->address_space_mem;

    memory_region_init(&br->address_space_mem, OBJECT(br), "pci_bridge_pci", UINT64_MAX);

    sec_bus->address_space_io = &br->address_space_io;

    memory_region_init(&br->address_space_io, OBJECT(br), "pci_bridge_io", 65536);

    memory_region_init(&br->address_space_io, OBJECT(br), "pci_bridge_io",

                       UINT32_MAX);

    br->windows = pci_bridge_region_init(br);

    QLIST_INIT(&sec_bus->child);

    QLIST_INSERT_HEAD(&parent->child, sec_bus, sibling);