From: Laurentiu Tudor <laurentiu.tudor@xxxxxxx>
This patch series adds SMMU support for NXP LS1043A and LS1046A chips
and consists mostly in important driver fixes and the required device
tree updates. It touches several subsystems and consists of three main
parts:
- changes in soc/drivers/fsl/qbman drivers adding iommu mapping of
reserved memory areas, fixes and defered probe support
- changes in drivers/net/ethernet/freescale/dpaa_eth drivers
consisting in misc dma mapping related fixes and probe ordering
- addition of the actual arm smmu device tree node together with
various adjustments to the device trees
Performance impact
Running iperf benchmarks in a back-to-back setup (both sides
having smmu enabled) on a 10GBps port show an important
networking performance degradation of around 40% (9.48Gbps
linerate vs 5.45Gbps) and around 30%-35% with iommu.strict=1.
If you need performance but without SMMU support you can use
"iommu.passthrough=1" to disable SMMU.
The patch set is based on net-next so, if generally agreed, I'd suggest
to get the patches through the netdev tree after getting all the Acks.
Changes in v3:
- redesigned the badly broken logic behind qbman portal probe
checking APIs. Updated commit message with details
- dropped few patches that were picked through arm-soc tree [2]
- added Madalin's Ack [1] for fsl/fman and dpaa_eth
[1] https://lkml.org/lkml/2018/9/27/831
[2] [PATCH 05/23] soc/fsl/qbman: add APIs to retrieve the probing status
[PATCH 06/23] soc/fsl/qman_portals: defer probe after qman's probe
[PATCH 07/23] soc/fsl/bman_portals: defer probe after bman's probe
Changes in v2:
- dropped confusing comments in smmu interrupt property (Robin)
- add an intermediate usb simple-bus to fix dma size issue (Robin)
- use defines instead of numbers in smmu interrupt definition
- drop double iommu_get_domain_for_dev() call in few qbman patches
Laurentiu Tudor (22):
soc/fsl/qman: fixup liodns only on ppc targets
soc/fsl/bman: map FBPR area in the iommu
soc/fsl/qman: map FQD and PFDR areas in the iommu
soc/fsl/qman-portal: map CENA area in the iommu
soc/fsl/qbman: add APIs to retrieve the probing status
soc/fsl/qman_portals: defer probe after qman's probe
soc/fsl/bman_portals: defer probe after bman's probe
soc/fsl/qbman_portals: add APIs to retrieve the probing status
fsl/fman: backup and restore ICID registers
fsl/fman: add API to get the device behind a fman port
dpaa_eth: defer probing after qbman
dpaa_eth: base dma mappings on the fman rx port
dpaa_eth: fix iova handling for contiguous frames
dpaa_eth: fix iova handling for sg frames
dpaa_eth: fix SG frame cleanup
arm64: dts: ls1046a: add smmu node
arm64: dts: ls1043a: add smmu node
arm64: dts: ls104xa: set mask to drop TBU ID from StreamID
arm64: dts: ls104x: add missing dma ranges property
arm64: dts: ls104x: add iommu-map to pci controllers
arm64: dts: ls104x: make dma-coherent global to the SoC
arm64: dts: ls104x: use a pseudo-bus to constrain usb dma size
.../arm64/boot/dts/freescale/fsl-ls1043a.dtsi | 106 ++++++++++----
.../arm64/boot/dts/freescale/fsl-ls1046a.dtsi | 102 ++++++++++---
.../net/ethernet/freescale/dpaa/dpaa_eth.c | 136 ++++++++++++------
drivers/net/ethernet/freescale/fman/fman.c | 35 ++++-
drivers/net/ethernet/freescale/fman/fman.h | 4 +
.../net/ethernet/freescale/fman/fman_port.c | 14 ++
.../net/ethernet/freescale/fman/fman_port.h | 2 +
drivers/soc/fsl/qbman/bman_ccsr.c | 22 +++
drivers/soc/fsl/qbman/bman_portal.c | 32 ++++-
drivers/soc/fsl/qbman/qman_ccsr.c | 28 ++++
drivers/soc/fsl/qbman/qman_portal.c | 48 ++++++-
include/soc/fsl/bman.h | 16 +++
include/soc/fsl/qman.h | 17 +++
13 files changed, 455 insertions(+), 107 deletions(-)
--
2.17.1
