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6 Commits

Author SHA1 Message Date
Colin Ian King
64d57d2c64 dmaengine: fsl-dpaa2-qdma: Fix spelling mistake "faile" -> "failed" 
There is a spelling mistake in a dev_err error message. Fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210826122500.13743-1-colin.king@canonical.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
 2021-08-29 19:14:20 +05:30
Baokun Li
df208d63cf dmaengine: fsl-dpaa2-qdma: Use list_move_tail instead of list_del/list_add_tail 
Using list_move_tail() instead of list_del() + list_add_tail().

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Link: https://lore.kernel.org/r/20210609072802.1368785-1-libaokun1@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
 2021-07-28 12:06:22 +05:30
Zhen Lei
17866bc6b2 dmaengine: fsl-dpaa2-qdma: Fix error return code in two functions 
Fix to return a negative error code from the error handling case instead
of 0, as done elsewhere in the function where it is.

Fixes: 7fdf9b05c73b ("dmaengine: fsl-dpaa2-qdma: Add NXP dpaa2 qDMA controller driver for Layerscape SoCs")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20210508030056.2027-1-thunder.leizhen@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
 2021-05-10 21:34:49 +05:30
YueHaibing
05fb806718 dmaengine: fsl-dpaa2-qdma: remove set but not used variable 'dpaa2_qdma' 
drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c: In function dpaa2_qdma_shutdown:
drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.c:795:28: warning: variable dpaa2_qdma set but not used [-Wunused-but-set-variable]

commit 3e0ca3c38dc2 ("dmaengine: fsl-dpaa2-qdma: Adding shutdown hook")
involved this, remove it.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20200303131347.28392-1-yuehaibing@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
 2020-03-06 19:04:55 +05:30
Peng Ma
3e0ca3c38d dmaengine: fsl-dpaa2-qdma: Adding shutdown hook 
We need to ensure DMA engine could be stopped in order for kexec
to start the next kernel.
So add the shutdown operation support.

Signed-off-by: Peng Ma <peng.ma@nxp.com>
Link: https://lore.kernel.org/r/20200227042841.18358-1-peng.ma@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
 2020-03-02 14:56:22 +05:30
Peng Ma
7fdf9b05c7 dmaengine: fsl-dpaa2-qdma: Add NXP dpaa2 qDMA controller driver for Layerscape SoCs 
DPPA2(Data Path Acceleration Architecture 2) qDMA supports
virtualized channel by allowing DMA jobs to be enqueued into
different work queues. Core can initiate a DMA transaction by
preparing a frame descriptor(FD) for each DMA job and enqueuing
this job through a hardware portal. DPAA2 components can also
prepare a FD and enqueue a DMA job through a hardware portal.
The qDMA prefetches DMA jobs through DPAA2 hardware portal. It
then schedules and dispatches to internal DMA hardware engines,
which generate read and write requests. Both qDMA source data and
destination data can be either contiguous or non-contiguous using
one or more scatter/gather tables.
The qDMA supports global bandwidth flow control where all DMA
transactions are stalled if the bandwidth threshold has been reached.
Also supported are transaction based read throttling.

Add NXP dppa2 qDMA to support some of Layerscape SoCs.
such as: LS1088A, LS208xA, LX2, etc.

Signed-off-by: Peng Ma <peng.ma@nxp.com>
Link: https://lore.kernel.org/r/20190930020440.7754-2-peng.ma@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
 2019-10-17 09:41:07 +05:30