[Skiboot] [PATCH 0/6] npu2: Add support for relaxed-ordering mode
Reza Arbab
arbab at linux.ibm.com
Thu Aug 2 06:01:13 AEST 2018
We've only recently been given a suitable driver stack and hardware with which
to test relaxed ordering, so I took the work Alistair had stashed away some
time ago and fleshed it out.
Patches 1-4 are very simple prep, but I thought the main patch was easier to
read with them separated out.
In light testing, GPUDirect throughput to an InfiniBand adapter increases ~3.6x
when relaxed ordering is enabled.
v3:
* Add new OPAL APIs and ibm,phb-pec-index to documentation
* Reword commit log of "npu2: Add support for relaxed-ordering mode"
v2:
* http://patchwork.ozlabs.org/project/skiboot/list/?series=58350
* Drop patch adding pci_next_phb() as it was never used
* Validate argument to npu2_relaxed_ordering_source_grpchp()
* Correct headline comment of npu2_set_relaxed_ordering()
* Lower log level in npu2_check_relaxed_ordering()
v1:
* http://patchwork.ozlabs.org/project/skiboot/list/?series=57991
---
Reza Arbab (6):
pci: Move logging macros to pci.h
phb4: Track PEC index in dt and phb4 struct
npu2: Add NPU2_SM_REG_OFFSET()
npu2: Don't open code NPU2_RELAXED_ORDERING_CFG2
npu2: Add support for relaxed-ordering mode
doc/opal-api: Document npu2 relaxed ordering APIs
core/pci.c | 21 --
doc/device-tree/pci.rst | 1 +
.../opal-npu2-get-set-relaxed-order-168-169.rst | 67 +++++
hw/npu2.c | 302 +++++++++++++++++++--
hw/phb4.c | 2 +
include/npu2-regs.h | 27 +-
include/opal-api.h | 4 +-
include/pci.h | 29 ++
include/phb4.h | 4 +
9 files changed, 414 insertions(+), 43 deletions(-)
create mode 100644 doc/opal-api/opal-npu2-get-set-relaxed-order-168-169.rst
--
1.8.3.1
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