tree 8b71e45be3fae1ef83a7a2808141fb02e7160fae
parent 75216638572f53612304c05a374f0246fe1d16da
author Ralph Campbell <ralph.campbell@qlogic.com> 1165962461 -0800
committer Roland Dreier <rolandd@cisco.com> 1165962461 -0800

IB: Add DMA mapping functions to allow device drivers to interpose

The QLogic InfiniPath HCAs use programmed I/O instead of HW DMA.
This patch allows a verbs device driver to interpose on DMA mapping
function calls in order to avoid relying on bus_to_virt() and
phys_to_virt() to undo the mappings created by dma_map_single(),
dma_map_sg(), etc.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>