[PATCH 0/3] dma-mapping: introduce new dma unmap and sync variants
Laurentiu Tudor
laurentiu.tudor at nxp.com
Thu Oct 24 10:55:45 UTC 2019
From: Laurentiu Tudor <laurentiu.tudor at nxp.com>
This series introduces a few new dma unmap and sync api variants that,
on top of what the originals do, return the physical address
corresponding to the input dma address. In order to do that a new dma
map op is added, .get_phys_addr that takes the input dma address and
returns the physical address backing it up.
The second patch adds an implementation for this new dma map op in the
generic iommu dma glue code and wires it in.
The third patch updates the dpaa2-eth driver to use the new apis.
Context: https://lkml.org/lkml/2019/5/31/684
Changes since RFC
* completely changed the approach: added unmap and sync variants that
return the phys addr instead of adding a new dma to phys conversion
function
Laurentiu Tudor (3):
dma-mapping: introduce new dma unmap and sync api variants
iommu/dma: wire-up new dma map op .get_phys_addr
dpaa2_eth: use new unmap and sync dma api variants
drivers/iommu/dma-iommu.c | 12 ++++
.../net/ethernet/freescale/dpaa2/dpaa2-eth.c | 43 ++++++---------
.../net/ethernet/freescale/dpaa2/dpaa2-eth.h | 1 -
include/linux/dma-mapping.h | 55 +++++++++++++++++++
4 files changed, 85 insertions(+), 26 deletions(-)
--
2.17.1
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