From: Anup Patel <anup.patel@broadcom.com>
To: Vinod Koul <vinod.koul@intel.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
"David S . Miller" <davem@davemloft.net>,
Jassi Brar <jassisinghbrar@gmail.com>
Cc: Dan Williams <dan.j.williams@intel.com>,
Ray Jui <rjui@broadcom.com>,
Scott Branden <sbranden@broadcom.com>,
Jon Mason <jonmason@broadcom.com>,
Rob Rice <rob.rice@broadcom.com>,
bcm-kernel-feedback-list@broadcom.com, dmaengine@vger.kernel.org,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org,
linux-raid@vger.kernel.org, Anup Patel <anup.patel@broadcom.com>
Subject: [PATCH v2 0/5] Broadcom SBA RAID support
Date: Tue, 7 Feb 2017 13:46:41 +0530 [thread overview]
Message-ID: <1486455406-11202-1-git-send-email-anup.patel@broadcom.com> (raw)
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-rc2 and depends on patchset
"[PATCH v4 0/2] Broadcom FlexRM ring manager support"
It is also available at sba-raid-v2 branch of
https://github.com/Broadcom/arm64-linux.git
Changes since v1:
- Droped patch to add mbox_channel_device() API
- Used GENMASK and BIT macros wherever possible in bcm-sba-raid driver
- Replaced C_MDATA macros with static inline functions in
bcm-sba-raid driver
- Removed sba_alloc_chan_resources() callback in bcm-sba-raid driver
- Used dev_err() instead of dev_info() wherever applicable
- Removed call to sba_issue_pending() from sba_tx_submit() in
bcm-sba-raid driver
- Implemented SBA request chaning for handling (len > sba->req_size)
in bcm-sba-raid driver
- Implemented device_terminate_all() callback in bcm-sba-raid driver
Anup Patel (5):
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 | 1470 ++++++++++++++++++++
include/linux/dmaengine.h | 19 +
include/linux/raid/pq.h | 4 +
lib/raid6/mktables.c | 20 +
9 files changed, 1571 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
next reply other threads:[~2017-02-07 8:17 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-07 8:16 Anup Patel [this message]
2017-02-07 8:16 ` [PATCH v2 1/5] lib/raid6: Add log-of-2 table for RAID6 HW requiring disk position Anup Patel
2017-02-07 8:16 ` [PATCH v2 2/5] async_tx: Handle DMA devices having support for fewer PQ coefficients Anup Patel
2017-02-07 8:27 ` Dan Williams
2017-02-07 9:02 ` Anup Patel
2017-02-07 16:42 ` Vinod Koul
2017-02-08 6:37 ` Anup Patel
2017-02-07 18:16 ` Dan Williams
2017-02-08 8:57 ` Anup Patel
2017-02-08 16:24 ` Dan Williams
2017-02-09 9:29 ` Anup Patel
2017-02-09 16:44 ` Dan Williams
2017-02-10 3:24 ` Anup Patel
2017-02-07 8:16 ` [PATCH v2 3/5] async_tx: Fix DMA_PREP_FENCE usage in do_async_gen_syndrome() Anup Patel
2017-02-07 8:16 ` [PATCH v2 4/5] dmaengine: Add Broadcom SBA RAID driver Anup Patel
2017-02-07 8:16 ` [PATCH v2 5/5] dt-bindings: Add DT bindings document for " Anup Patel
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