On Apr 15, 2008, at 11:25 AM, Gutson Daniel-ADG035 wrote:
Hi, I'm doing some work on 2.6.10, and got this problem: - there are some io_block_mapping calls in the setup_io_mapping callback, that use the BATs, and passing same va and pa each one. Problem arises later when vmallocs gets a a pointer within the mapped ranges. In other words, seems like the VMM is not aware of the BATs mapping.So what I did is: called first ioremap and then io_block_mapping in thecallback thus not hardcoding the va, something like: va = ioremap(pa, size); io_block_mapping(pa, va, size); Questions: 1) Is it right? 2) Should I unmap that address sometime later? (i.e. after mem_init_done).
You should look at getting ride of your io_block_mapping calls as we've removed that in new kernels.
However, ioremap() should work properly in that it should lookup the address you are mapping via p_mapped_by_bats().
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