[lkml]   [2017]   [Feb]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Subject[PATCH 0/6] Broadcom SBA RAID support
The Broadcom SBA RAID is a stream-based device which provides
RAID5/6 offload.

It requires a SoC specific ring manager (such as Broadcom FlexRM
ring manager) to provide ring-based programming interface. Due to
this, the Broadcom SBA RAID driver (mailbox client) implements
DMA device having one DMA channel using a set of mailbox channels
provided by Broadcom SoC specific ring manager driver (mailbox

Important limitations of Broadcom SBA RAID hardware are:
1. Requires disk position instead of disk coefficient
2. Supports only 30 PQ disk coefficients

To address limitation #1, we have added raid_gflog table which
will help driver convert disk coefficient to disk position. To
address limitation #2, we have extended Linux Async Tx APIs to
check for available PQ coefficients before doing PQ offload.

This patchset is based on Linux-4.10-rc6 and depends on patchset
"[PATCH v4 0/2] Broadcom FlexRM ring manager support"

It is also available at sba-raid-v1 branch of

Anup Patel (6):
mailbox: Add new API mbox_channel_device() for clients
lib/raid6: Add log-of-2 table for RAID6 HW requiring disk position
async_tx: Handle DMA devices having support for fewer PQ coefficients
async_tx: Fix DMA_PREP_FENCE usage in do_async_gen_syndrome()
dmaengine: Add Broadcom SBA RAID driver
dt-bindings: Add DT bindings document for Broadcom SBA RAID driver

.../devicetree/bindings/dma/brcm,iproc-sba.txt | 29 +
crypto/async_tx/async_pq.c | 8 +-
crypto/async_tx/async_raid6_recov.c | 12 +-
drivers/dma/Kconfig | 13 +
drivers/dma/Makefile | 1 +
drivers/dma/bcm-sba-raid.c | 1309 ++++++++++++++++++++
drivers/mailbox/mailbox.c | 21 +
include/linux/dmaengine.h | 19 +
include/linux/mailbox_client.h | 1 +
include/linux/raid/pq.h | 4 +
lib/raid6/mktables.c | 20 +
11 files changed, 1432 insertions(+), 5 deletions(-)
create mode 100644 Documentation/devicetree/bindings/dma/brcm,iproc-sba.txt
create mode 100644 drivers/dma/bcm-sba-raid.c


 \ /
  Last update: 2017-02-02 05:50    [W:0.137 / U:28.828 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site