• David Brownell's avatar
    [PATCH] HCDs support new DMA APIs (part 1 of 2) · f7503d44
    David Brownell authored
    -  teaches the hardware-specific code to
       use urb->*_dma instead of creating mappings.
       (And tells ohci-sa1111 to init its buffer pools.)
       EHCI and UHCI also eliminated duplicated state;
       all the HCDs are now a smidgeon smaller.
    
    Sanity checked by enumerating, including through
    a hub, and using a USB Ethernet adapter, with each
    of the three host controllers.
    
    Worth noting:  this removes pci_dma_sync_single()
    calls from UHCI.  On x86 (and some others) that's
    a NOP, but for UHCI on other platforms (rare except
    maybe on IA64, as I understand) this anticipates
    the upcoming patch to remove interrupt automagic.
    (I'll likely submit that after a Linus release that
    catches up to your USB tree. :)
    f7503d44
ehci.h 14.6 KB