At 02/15/2012 12:52 AM, Jan Kiszka Wrote:
> On 2012-02-09 04:21, Wen Congyang wrote:
>> This API will be used in the following patch.
>>
>> Signed-off-by: Wen Congyang <[email protected]>
>> ---
>> cpu-common.h | 2 ++
>> exec.c | 16 ++++++++++++++++
>> 2 files changed, 18 insertions(+), 0 deletions(-)
>>
>> diff --git a/cpu-common.h b/cpu-common.h
>> index a40c57d..d047137 100644
>> --- a/cpu-common.h
>> +++ b/cpu-common.h
>> @@ -71,6 +71,8 @@ void cpu_physical_memory_unmap(void *buffer,
>> target_phys_addr_t len,
>> void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque));
>> void cpu_unregister_map_client(void *cookie);
>>
>> +bool is_io_addr(target_phys_addr_t phys_addr);
>
> Something like cpu_physical_memory_is_io would be more consistent with
> other APIs around.
Do you mean change the API's name? If so, I will change it.
>
>> +
>> /* Coalesced MMIO regions are areas where write operations can be reordered.
>> * This usually implies that write operations are side-effect free. This
>> allows
>> * batching which can make a major impact on performance when using
>> diff --git a/exec.c b/exec.c
>> index b81677a..edc5684 100644
>> --- a/exec.c
>> +++ b/exec.c
>> @@ -4435,3 +4435,19 @@ bool virtio_is_big_endian(void)
>> #undef env
>>
>> #endif
>> +
>> +bool is_io_addr(target_phys_addr_t phys_addr)
>> +{
>> + ram_addr_t pd;
>> + PhysPageDesc p;
>> +
>> + p = phys_page_find(phys_addr >> TARGET_PAGE_BITS);
>> + pd = p.phys_offset;
>> +
>> + if (!is_ram_rom_romd(pd)) {
>
> return !is_ram_rom_romd(pd); ?
Yes, I will change the code.
Thanks
Wen Congyang
>
>> + /* I/O region */
>> + return true;
>> + }
>> +
>> + return false;
>> +}
>
> Jan
>
