> > - EITHER:
> >
> > * each HCD is modified to manage page DMA
> > mappings if needed, in the same places they now
> > handle the single shot DMA mappings
> >
> > - OR:
> >
> > * the (new) hcd layer does this, once. In that case
> > it'd be
> - EITHER:
>
> * each HCD is modified to manage page DMA
> mappings if needed, in the same places they now
> handle the single shot DMA mappings
>
> - OR:
>
> * the (new) hcd layer does this, once. In that case
> it'd be advantageous to add
OK, so it looks like URBs need to learn about highmem.
Here's a quick proposal. It's rather first-drafty, and needs
discussion (for a week or so?).
- Add to struct urb:
struct page *page;/* [in] transfer buffer page */
unsigned offset;/* [in] offset within page
