On 2011-09-18 17:37, Avi Kivity wrote:
> On 09/18/2011 03:51 PM, Jan Kiszka wrote:
>> From: Jan Kiszka<address@hidden>
>>
>> As we register old portio regions via ioport_register, we are also
>> responsible for providing the word access wrapper.
>>
>> Signed-off-by: Jan Kiszka<address@hidden>
>> ---
>>
>> Oops, was lacking a shift for word reads.
>>
>> memory.c | 10 ++++++++++
>> 1 files changed, 10 insertions(+), 0 deletions(-)
>>
>> diff --git a/memory.c b/memory.c
>> index b3ee232..aef4702 100644
>> --- a/memory.c
>> +++ b/memory.c
>> @@ -397,6 +397,11 @@ static void memory_region_iorange_read(IORange
>> *iorange,
>> *data = ((uint64_t)1<< (width * 8)) - 1;
>> if (mrp) {
>> *data = mrp->read(mr->opaque, offset + mr->offset);
>> + } else if (width == 2) {
>> + mrp = find_portio(mr, offset, 1, false);
>> + assert(mrp);
>> + *data = mrp->read(mr->opaque, offset + mr->offset) |
>> + (mrp->read(mr->opaque, offset + mr->offset +
>> 1)<< 8);
>> }
>
> What about width 4?
This is PIO, limited by the x86 address space to 16 bit. Will add a comment.