| From: |
| Anup Patel <anup.patel-AT-broadcom.com> |
| To: |
| Vinod Koul <vinod.koul-AT-intel.com>, Rob Herring <robh+dt-AT-kernel.org>, Mark Rutland <mark.rutland-AT-arm.com>, Herbert Xu <herbert-AT-gondor.apana.org.au>, "David S . Miller" <davem-AT-davemloft.net>, Jassi Brar <jassisinghbrar-AT-gmail.com> |
| Subject: |
| [PATCH 0/6] Broadcom SBA RAID support |
| Date: |
| Thu, 2 Feb 2017 10:17:10 +0530 |
| Message-ID: |
| <1486010836-25228-1-git-send-email-anup.patel@broadcom.com> |
| Cc: |
| Dan Williams <dan.j.williams-AT-intel.com>, Ray Jui <rjui-AT-broadcom.com>, Scott Branden <sbranden-AT-broadcom.com>, Jon Mason <jonmason-AT-broadcom.com>, Rob Rice <rob.rice-AT-broadcom.com>, bcm-kernel-feedback-list-AT-broadcom.com, dmaengine-AT-vger.kernel.org, devicetree-AT-vger.kernel.org, linux-arm-kernel-AT-lists.infradead.org, linux-kernel-AT-vger.kernel.org, linux-crypto-AT-vger.kernel.org, linux-raid-AT-vger.kernel.org, Anup Patel <anup.patel-AT-broadcom.com> |
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
controller).
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
https://github.com/Broadcom/arm64-linux.git
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
--
2.7.4
