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137bd11090
linux/drivers/dma
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Jon Medhurst 137bd11090 dmaengine: pl330: Align DMA memcpy operations to MFIFO width 
The algorithm used for programming the DMA Controller doesn't take into
consideration the requirements of transfers that are not aligned to the
bus width. This failure may result in DMA transferring one too few MFIFO
entries (so too few bytes are copied) or the DMA trying to write one too
many MFIFO entries and hanging because this is never provided.

See "MFIFO Usage Overview" chapter in the the TRM for "CoreLink DMA
Controller DMA-330", Revision r1p1.

We work around these shortcomings by making sure we pick a burst size
and length which ensures no bursts straddle an MFIFO entry.

Signed-off-by: Jon Medhurst <tixy@linaro.org>
[squashed linker error "undefined reference to `__aeabi_uldivmod]
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17 13:01:09 +05:30
..
bestcomm drivers: clean-up prom.h implicit includes 2013-10-09 20:04:04 -05:00
dw dmaengine: dw: export probe()/remove() and Co to users 2014-10-15 20:31:05 +05:30
ioat net_dma: simple removal 2014-09-28 07:05:16 -07:00
ipu dmaengine: ipu: use return value of request_irq 2014-07-25 15:39:50 +05:30
ppc4xx Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2014-01-29 20:27:23 -08:00
sh dma: rcar-audmapp: Fix for no corresponding slave ID 2014-08-28 12:42:10 +05:30
xilinx dma: xilinx: Remove .owner field for driver 2014-08-19 22:36:50 +05:30
acpi-dma.c acpi-dma: convert to return error code when asked for channel 2014-02-11 23:30:50 +05:30
amba-pl08x.c dma: pl08x: Use correct specifier for size_t values 2014-08-04 13:45:26 +05:30
at_hdmac_regs.h dmaengine: at_hdmac: remove unused function 2013-12-12 22:43:41 -08:00
at_hdmac.c dma: at_hdmac: fix invalid remaining bytes detection 2014-08-07 21:52:27 +05:30
bcm2835-dma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
coh901318_lli.c Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2013-02-26 09:24:48 -08:00
coh901318.c dmaengine: coh901318: use dmaengine_terminate_all() API 2014-10-15 21:30:59 +05:30
coh901318.h dma: coh901318: merge header files 2013-01-07 17:36:37 +01:00
cppi41.c dma: cppi41: Switch to using managed resource in probe 2014-10-15 20:26:45 +05:30
dma-jz4740.c dmaengine: jz4740: Fix non-cyclic descriptor completion 2014-09-11 10:54:25 +05:30
dmaengine.c dmaengine-3.17 2014-10-07 20:39:25 -04:00
dmaengine.h dmaengine: consolidate initialization of cookies 2012-03-13 11:37:22 +05:30
dmatest.c dmaengine-3.17 2014-10-07 20:39:25 -04:00
edma.c dmaengine: edma: check for echan->edesc => NULL in edma_dma_pause() 2014-10-15 20:55:04 +05:30
ep93xx_dma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
fsl-edma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
fsldma.c dmaengine: freescale: remove FSLDMA_EXTERNAL_START control method 2014-10-15 21:31:28 +05:30
fsldma.h dmaengine: Freescale: change descriptor release process for supporting async_tx 2014-07-14 21:32:18 +05:30
imx-dma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
imx-sdma.c dma: imx-sdma: fix another incorrect __init annotation 2014-09-28 21:30:05 +05:30
intel_mid_dma_regs.h dma: fix comments 2012-09-01 08:57:12 -07:00
intel_mid_dma.c dmaengine: intel_mid_dma: use DMA_COMPLETE for dma completion status 2013-10-25 11:16:04 +05:30
iop-adma.c Merge commit 'dmaengine-3.13-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine 2013-11-16 12:02:36 +05:30
k3dma.c dmaengine: k3dma: fix sparse warnings 2014-01-20 13:53:20 +05:30
Kconfig Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2014-10-18 18:11:04 -07:00
Makefile dmaengine-3.17 2014-10-07 20:39:25 -04:00
mic_x100_dma.c dma: MIC X100 DMA Driver 2014-07-12 09:57:42 -07:00
mic_x100_dma.h dma: MIC X100 DMA Driver 2014-07-12 09:57:42 -07:00
mmp_pdma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
mmp_tdma.c dmaengine: mmp_tdma: add DMA_PREP_INTERRUPT flag support 2014-09-11 10:47:44 +05:30
moxart-dma.c dmaengine: Add MOXA ART DMA engine driver 2014-01-20 12:32:46 +05:30
mpc512x_dma.c dmaengine: mpc512x: register for device tree channel lookup 2014-07-26 00:21:42 +05:30
mv_xor.c Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2014-10-18 18:11:04 -07:00
mv_xor.h dma: mv_xor: Add support for DMA_INTERRUPT 2014-09-23 20:17:01 +05:30
mxs-dma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
nbpfaxi.c dmaengine: nbpf_error_get_channel() can be static 2014-08-05 22:00:18 +05:30
of-dma.c dmaengine: of: add common xlate function for matching by channel id 2014-07-26 00:21:41 +05:30
omap-dma.c dmaengine: omap-dma: Restore the CLINK_CTRL in resume path 2014-09-23 18:22:55 +05:30
pch_dma.c dmaengine: pch: fix compilation for alpha target 2014-05-22 18:50:49 +05:30
pl330.c dmaengine: pl330: Align DMA memcpy operations to MFIFO width 2014-11-17 13:01:09 +05:30
qcom_bam_dma.c dmaengine: qcom_bam_dma: Add descriptor flags 2014-07-14 22:06:41 +05:30
s3c24xx-dma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
sa11x0-dma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
sirf-dma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
ste_dma40_ll.c dmaengine: ste_dma40_ll: Replace meaningless register set with comment 2013-06-04 11:12:10 +02:00
ste_dma40_ll.h dmaengine: ste_dma40: Remove unnecessary call to d40_phy_cfg() 2013-05-23 21:13:19 +02:00
ste_dma40.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
sun6i-dma.c dmaengine: sun6i: Fix memcpy operation 2014-11-12 14:54:09 +05:30
tegra20-apb-dma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
timb_dma.c dmaengine: remove DMA unmap from drivers 2013-11-14 11:04:38 -08:00
TODO dmaengine: dw: don't perform DMA when dmaengine_submit is called 2014-07-15 22:14:30 +05:30
txx9dmac.c dma: fix build warnings in txx9 2013-12-12 22:43:41 -08:00
txx9dmac.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30
virt-dma.c dmaengine: virt-dma: add support for cyclic DMA periodic callbacks 2012-07-01 14:15:23 +01:00
virt-dma.h dma: fix vchan_cookie_complete() debug print 2014-01-26 17:33:45 +05:30