dmaengine: fsl-dpaa2-qdma: Fix the size of dma pools

In case of long format of qDMA command descriptor, there are one frame
descriptor, three entries in the frame list and two data entries. So the
size of dma_pool_create for these three fields should be the same with
the total size of entries respectively, or the contents may be overwritten
by the next allocated descriptor.

Fixes: 7fdf9b05c73b ("dmaengine: fsl-dpaa2-qdma: Add NXP dpaa2 qDMA controller driver for Layerscape SoCs")
Signed-off-by: Guanhua Gao <guanhua.gao@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20240118162917.2951450-1-Frank.Li@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

dmaengine: fsl-dpaa2-qdma: Remove redundant initialization owner in dpaa2_qdma_driver

The fsl_mc_driver_register() will set "THIS_MODULE" to driver.owner when
register a fsl_mc_driver driver, so it is redundant initialization to set
driver.owner in dpaa2_qdma_driver statement. Remove it for clean code.

Signed-off-by: Li Zetao <lizetao1@huawei.com>
Link: https://lore.kernel.org/r/20230804100245.100068-1-lizetao1@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

bus: fsl-mc: Make remove function return void

The value returned by an fsl-mc driver's remove function is mostly
ignored. (Only an error message is printed if the value is non-zero
and then device removal continues unconditionally.)

So change the prototype of the remove function to return no value. This
way driver authors are not tempted to assume that passing an error to
the upper layer is a good idea. All drivers are adapted accordingly.
There is no intended change of behaviour, all callbacks were prepared to
return 0 before.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com> # sanity checks
Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Tested-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>

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>

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>

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>

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>

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>

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>