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ca7f285171
linux/drivers/dma
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Serge Semin ca7f285171 dmaengine: dw: Introduce max burst length hw config 
IP core of the DW DMA controller may be synthesized with different
max burst length of the transfers per each channel. According to Synopsis
having the fixed maximum burst transactions length may provide some
performance gain. At the same time setting up the source and destination
multi size exceeding the max burst length limitation may cause a serious
problems. In our case the DMA transaction just hangs up. In order to fix
this lets introduce the max burst length platform config of the DW DMA
controller device and don't let the DMA channels configuration code
exceed the burst length hardware limitation.

Note the maximum burst length parameter can be detected either in runtime
from the DWC parameter registers or from the dedicated DT property.
Depending on the IP core configuration the maximum value can vary from
channel to channel so by overriding the channel slave max_burst capability
we make sure a DMA consumer will get the channel-specific max burst
length.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200723005848.31907-10-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-07-27 14:30:55 +05:30
..
bestcomm treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
dw dmaengine: dw: Introduce max burst length hw config 2020-07-27 14:30:55 +05:30
dw-axi-dmac dmaengine: virt-dma: Add missing locking 2019-12-26 10:04:18 +05:30
dw-edma dmaengine: dw-edma: support local dma device transfer semantics 2020-05-04 14:24:27 +05:30
fsl-dpaa2-qdma dmaengine: fsl-dpaa2-qdma: remove set but not used variable 'dpaa2_qdma' 2020-03-06 19:04:55 +05:30
hsu dmaengine updates for v5.3-rc1 2019-07-17 09:55:43 -07:00
idxd dmaengine: idxd: move idxd interrupt handling to mask instead of ignore 2020-07-13 14:48:02 +05:30
ioat dmaengine: ioat: Fix some parameter misspelling and provide description for phys_complete 2020-07-15 17:50:57 +05:30
ipu treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mediatek dmaengine: mediatek: mtk-hsdma: Fix formatting in 'struct mtk_hsdma_pdesc' doc block 2020-07-15 17:50:46 +05:30
ppc4xx dmaengine: ppc4xx: Use scnprintf() for avoiding potential buffer overflow 2020-03-11 15:10:45 +05:30
qcom treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
sf-pdma dmaengine: sf-pdma: Simplify the error handling path in 'sf_pdma_probe()' 2020-05-13 17:07:50 +05:30
sh dmaengine: fix spelling mistake "exceds" -> "exceeds" 2020-03-23 11:39:49 +05:30
ti dmaengine: ti: k3-udma: Query throughput level information from hardware 2020-07-27 14:23:03 +05:30
xilinx dmaengine: zynqmp_dma: Move list_del inside zynqmp_dma_free_descriptor. 2020-05-15 11:21:11 +05:30
acpi-dma.c dmaengine: acpi: Drop double check for ACPI companion device 2020-06-24 11:28:41 +05:30
altera-msgdma.c dmaengine: altera-msgdma: Fix struct documentation blocks 2020-07-15 17:50:46 +05:30
amba-pl08x.c dmaengine updates for v5.3-rc1 2019-07-17 09:55:43 -07:00
at_hdmac_regs.h dmaengine: at_hdmac: Replace zero-length array with flexible-array 2020-05-13 20:25:16 +05:30
at_hdmac.c dmaengine: at_hdmac: Repair parameter misspelling and demote non-kerneldoc headers 2020-07-15 17:50:46 +05:30
at_xdmac.c dmaengine: at_xdmac: Replace zero-length array with flexible-array 2020-05-13 20:25:41 +05:30
bcm2835-dma.c dmaengine: bcm2835: do not call vchan_vdesc_fini() with lock held 2019-12-26 10:04:18 +05:30
bcm-sba-raid.c dmaengine: bcm-sba-raid: Replace zero-length array with flexible-array member 2020-02-13 20:15:35 +05:30
coh901318_lli.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194 2019-05-30 11:29:22 -07:00
coh901318.c dmaengine: coh901318: Fix a double lock bug in dma_tc_handle() 2020-02-24 21:59:45 +05:30
coh901318.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194 2019-05-30 11:29:22 -07:00
dma-axi-dmac.c dmaengine: axi-dmac: add a check for devm_regmap_init_mmio 2019-12-11 16:11:50 +05:30
dma-jz4780.c dmaengine updates for v5.6-rc1 2020-01-27 10:55:50 -08:00
dmaengine.c dmaengine: Introduce DMA-device device_caps callback 2020-07-27 14:30:55 +05:30
dmaengine.h dmaengine: Create debug directories for DMA devices 2020-03-11 14:56:14 +05:30
dmatest.c dmaengine: cookie bypass for out of order completion 2020-06-17 19:45:14 +05:30
ep93xx_dma.c dmaengine: ep93xx_dma: Provide some missing struct attribute documentation 2020-07-15 17:50:46 +05:30
fsl_raid.c dmaengine: fsl_raid: make of_device_ids const. 2017-06-29 09:25:28 +05:30
fsl_raid.h
fsl-edma-common.c dmaengine: fsl-edma: Add eDMA support for QorIQ LS1028A platform 2019-12-18 11:55:46 +05:30
fsl-edma-common.h dmaengine: fsl-edma: Add eDMA support for QorIQ LS1028A platform 2019-12-18 11:55:46 +05:30
fsl-edma.c dmaengine: fsl-edma: Add eDMA support for QorIQ LS1028A platform 2019-12-18 11:55:46 +05:30
fsl-qdma.c dmaengine: Extend NXP QDMA driver to check transmission errors 2020-07-17 11:50:03 +05:30
fsldma.c dmaengine: fsldma: Mark expected switch fall-through 2019-08-20 19:42:34 -05:00
fsldma.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 40 2019-05-24 17:27:12 +02:00
hisi_dma.c dmaengine: hisilicon: Use struct_size() in devm_kzalloc() 2020-06-24 11:26:23 +05:30
idma64.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
idma64.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
img-mdc-dma.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 422 2019-06-05 17:37:15 +02:00
imx-dma.c dmaengine: imx-dma: Mark expected switch fall-through 2019-07-31 20:49:04 +05:30
imx-sdma.c dmaengine: imx-sdma: Correct formatting issue and provide 2 new descriptions 2020-07-15 17:50:47 +05:30
iop-adma.c dmaengine: iop-adma: Function parameter documentation must adhere to correct formatting 2020-07-15 17:50:47 +05:30
iop-adma.h dma: iop-adma: allow building without platform headers 2019-08-14 15:36:22 +02:00
k3dma.c dmaengine: k3dma: Avoid null pointer traversal 2019-12-23 13:21:14 +05:30
Kconfig dmaengine: idxd: fix PCI_MSI build errors 2020-07-15 11:33:39 +05:30
lpc18xx-dmamux.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
Makefile dmaengine: uniphier-xdmac: Add UniPhier external DMA controller driver 2020-03-02 14:54:34 +05:30
mcf-edma.c dmaengine: fsl-edma: add drvdata for fsl-edma 2019-07-03 13:28:22 +05:30
mic_x100_dma.c dmaengine updates for v5.3-rc1 2019-07-17 09:55:43 -07:00
mic_x100_dma.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 290 2019-06-05 17:36:38 +02:00
milbeaut-hdmac.c dmaengine: milbeaut-hdmac: remove redundant error log 2019-11-08 09:26:17 +05:30
milbeaut-xdmac.c dmaengine: milbeaut-xdmac: remove redundant error log 2019-11-08 09:26:17 +05:30
mmp_pdma.c dmaengine: mmp_pdma: Demote obvious misuse of kerneldoc to standard comment blocks 2020-07-15 17:50:46 +05:30
mmp_tdma.c dmaengine: mmp_tdma: share the IRQ line 2020-06-16 21:59:01 +05:30
moxart-dma.c dmaengine: moxart-dma: Drop pointless static qualifier in moxart_probe() 2020-05-13 17:33:17 +05:30
mpc512x_dma.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 7 2019-05-21 11:28:40 +02:00
mv_xor_v2.c dmaengine: mv_xor_v2: Supply some missing 'struct mv_xor_v2_device' attribute docs 2020-07-15 17:50:47 +05:30
mv_xor.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
mv_xor.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
mxs-dma.c dmaengine updates for v5.3-rc1 2019-07-17 09:55:43 -07:00
nbpfaxi.c dmaengine: nbpfaxi: Provide some missing attribute docs and split out slave info 2020-07-15 17:50:47 +05:30
of-dma.c dmaengine: of-dma: Fix misspellings/formatting issues in some function headers 2020-07-15 17:50:46 +05:30
owl-dma.c dmaengine: owl: Use correct lock in owl_dma_get_pchan() 2020-05-04 14:25:06 +05:30
pch_dma.c dmaengine: pch_dma.c: Avoid data race between probe and irq handler 2020-04-23 11:47:16 +05:30
pl330.c dmaengine: pl330: Demote obvious misuse of kerneldoc to standard comment block 2020-07-15 17:50:46 +05:30
plx_dma.c dmaengine: plx-dma: Implement descriptor submission 2020-01-15 19:40:51 +05:30
pxa_dma.c dmaengine updates for v5.3-rc1 2019-07-17 09:55:43 -07:00
s3c24xx-dma.c dmaengine: s3c24xx-dma: fix spelling mistake "to" -> "too" 2020-01-23 17:03:25 +05:30
sa11x0-dma.c dmaengine: sa11x0: Replace zero-length array with flexible-array member 2020-02-19 17:48:40 +05:30
sirf-dma.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 4 2019-05-21 11:28:40 +02:00
sprd-dma.c dmaengine: sprd: Set request pending flag when DMA controller is active 2020-03-23 11:38:24 +05:30
st_fdma.c dmaengine: Remove dev_err() usage after platform_get_irq() 2019-07-31 20:50:53 +05:30
st_fdma.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ste_dma40_ll.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194 2019-05-30 11:29:22 -07:00
ste_dma40_ll.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194 2019-05-30 11:29:22 -07:00
ste_dma40.c dmaengine: ste_dma40: Supply 2 missing struct attribute descriptions 2020-07-15 17:50:46 +05:30
stm32-dma.c dmaengine: stm32-dma: direct mode support through device tree 2020-04-27 21:40:12 +05:30
stm32-dmamux.c dmaengine: stm32-dmamux: driver defers probe for clock and reset 2020-02-24 22:22:44 +05:30
stm32-mdma.c dmaengine: stm32-mdma: use vchan_terminate_vdesc() in .terminate_all 2020-02-24 22:20:01 +05:30
sun4i-dma.c dmaengine: sun4i-dma: Demote obvious misuse of kerneldoc to standard comment blocks 2020-07-15 17:50:47 +05:30
sun6i-dma.c dmaengine: Remove dev_err() usage after platform_get_irq() 2019-07-31 20:50:53 +05:30
tegra20-apb-dma.c dmaengine: tegra-apb: Ensure that clock is enabled during of DMA synchronization 2020-04-27 21:35:35 +05:30
tegra210-adma.c dmaengine: tegra210-adma: Fix an error handling path in 'tegra_adma_probe()' 2020-05-19 22:26:01 +05:30
timb_dma.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
TODO
txx9dmac.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
txx9dmac.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
uniphier-mdmac.c dmaengine: uniphier-mdmac: replace zero-length array with flexible-array member 2020-02-13 20:15:57 +05:30
uniphier-xdmac.c dmaengine: uniphier-xdmac: Remove redandant error log for platform_get_irq 2020-03-26 12:22:56 +05:30
virt-dma.c dmaengine updates for v5.6-rc1 2020-01-27 10:55:50 -08:00
virt-dma.h dmaengine: virt-dma: Add missing locking around list operations 2019-12-26 10:04:18 +05:30
xgene-dma.c dmaengine: xgene-dma: Provide descriptions for 'dev' and 'clk' in device's ddata 2020-07-15 17:50:47 +05:30
zx_dma.c dmaengine: zx: remove: removed dmam_pool_destroy 2019-11-14 12:16:53 +05:30