I/O Memory Mapping failed

[Markus Partheymueller]

Hi,

I just wanted to ask about the status of this issue.

Cheers

Markus

On 23 July 2012 17:20, Markus Partheymueller <mail at ...119...> wrote:
> Hi,
>
>
>
>> Please try to subtract the offset from the initial '_map' call:
>
> That didn't do it, because it still uses the base address with offset
> for the io mem connection. What did help was to use _base - _offset()
> in the constructor of Io_mem_connection. Now I could successfully boot
> genode with USB input devices and launch scout.
>
> But that is of course a very dirty hack to get it running. The
> question is, why the creation of io_mem_connection fails, or if the
> memory map has some issues.
>
>>
>> diff --git a/os/src/drivers/acpi/acpi.cc b/os/src/drivers/acpi/acpi.cc
>> index 6f4970e..a8322b2 100644
>> --- a/os/src/drivers/acpi/acpi.cc
>> +++ b/os/src/drivers/acpi/acpi.cc
>> @@ -206,7 +206,7 @@ class Table_wrapper
>>          Table_wrapper(addr_t base)
>>          : _base(base), _io_mem(0), _table(0)
>>          {
>> -            _map(0x1000);
>> +            _map(0x1000 - _offset());
>>
>>              /* remap if table size is larger than current size */
>>              if (_offset() + _table->size > 0x1000) {
>>
>> If this should work, we have to make sure that 0x1000 - offset is at
>> least 8 Bytes wide.
>>
>> Sebastian
>>
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