Commit e5a11847 authored by Mike Nawrocki's avatar Mike Nawrocki Committed by Paolo Bonzini
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Enable 8-byte wide MMIO for 16550 serial devices



Some drivers for the PPMC7400 PowerPC evaluation board accesses the
serial registers through the floating point unit (stfd/ldfd), which is
an 8-byte wide access. This patch enables that behavior.

Signed-off-by: default avatarMike Nawrocki <michael.nawrocki@gtri.gatech.edu>
Message-Id: <20171106161039.32596-1-michael.nawrocki@gtri.gatech.edu>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent d24aaf2a
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+7 −1
Original line number Diff line number Diff line
@@ -1005,7 +1005,7 @@ static void serial_mm_write(void *opaque, hwaddr addr,
                            uint64_t value, unsigned size)
{
    SerialState *s = opaque;
    value &= ~0u >> (32 - (size * 8));
    value &= 255;
    serial_ioport_write(s, addr >> s->it_shift, value, 1);
}

@@ -1014,16 +1014,22 @@ static const MemoryRegionOps serial_mm_ops[3] = {
        .read = serial_mm_read,
        .write = serial_mm_write,
        .endianness = DEVICE_NATIVE_ENDIAN,
        .valid.max_access_size = 8,
        .impl.max_access_size = 8,
    },
    [DEVICE_LITTLE_ENDIAN] = {
        .read = serial_mm_read,
        .write = serial_mm_write,
        .endianness = DEVICE_LITTLE_ENDIAN,
        .valid.max_access_size = 8,
        .impl.max_access_size = 8,
    },
    [DEVICE_BIG_ENDIAN] = {
        .read = serial_mm_read,
        .write = serial_mm_write,
        .endianness = DEVICE_BIG_ENDIAN,
        .valid.max_access_size = 8,
        .impl.max_access_size = 8,
    },
};