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linux-stable/drivers/dma
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Linus Walleij 1e1cfc7213 dmaengine: pl08x: Add support for Faraday Technology FTDMAC020 
After reading the specs for the Faraday Technology FTDMAC020 found
in the Gemini platform, it becomes pretty evident that this is just
another PL08x derivative, and should be handled like such by simply
extending the existing PL08x driver to handle the quirks in this
hardware.

This patch makes memcpy work and has been tested on the Gemini and
also regression-tested on the Nomadik NHK15 using dmatest with
10 threads per channel without a hinch for hours.

I have not implemented slave DMA in those codepaths, because this
device (Gemini) does not use slave DMA, and it seems like devices
using FTDMAC020 for device DMA have a slightly different register
layout so some real hardware is needed to proceed with this. I
left some FIXME etc in the code for this.

I had to do some refactorings of some helper functions, but I have
not split those into separate patches because these refactorings
do not make much sense without the increased complexity of handling
the FTDMAC020.

The DMA test would hang the platform on me on the Gemini after a
few thousand iterations, however after turning of the caches the
problem immediately disappeared and I could run the DMA engine
with 10 threads pers physical channel for days in a row without
a crash. I think there is no problem with the DMA driver: instead
it is something fishy in the FA526 cache handling code that get
pretty heavily exercised by the DMA engine and we need to go and
fix that instead.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2017-05-24 09:44:32 +05:30
..
bestcomm dmaengine: NO_IRQ removal from powerpc-only drivers 2016-09-14 18:57:38 +05:30
dw dmaengine updates for 4.11-rc1 2017-02-21 17:06:22 -08:00
hsu serial: 8250_mid: handle interrupt correctly in DMA case 2017-01-19 14:20:23 +01:00
ioat dmaengine: ioat: use setup_timer 2017-04-24 09:38:41 +05:30
ipu dmaengine: ipu: Make sure the interrupt routine checks all interrupts. 2017-01-02 10:48:44 +05:30
ppc4xx Merge branch 'topic/unmap_cleanup' into for-linus 2016-10-03 09:36:11 +05:30
qcom dmaengine: qcom_hidma: pause the channel on shutdown 2017-03-27 10:43:38 +05:30
sh dmaengine: rcar-dmac: enable descriptor mode on 40bit 2017-03-27 10:06:37 +05:30
xilinx dmaengine: xilinx: avoid memory corruption for device_prep_dma_memcpy() 2017-03-14 16:14:29 +05:30
acpi-dma.c dmaengine: acpi-dma: align debug message with flow 2016-02-22 09:06:09 +05:30
amba-pl08x.c dmaengine: pl08x: Add support for Faraday Technology FTDMAC020 2017-05-24 09:44:32 +05:30
at_hdmac.c dmaengine: at_hdmac: move to dma_pool_zalloc 2016-12-08 21:24:17 +05:30
at_hdmac_regs.h dmaengine: at_hdmac: use %pad format string for dma_addr_t 2015-11-16 09:21:05 +05:30
at_xdmac.c dmaengine: at_xdmac: don't restore unsaved status 2016-12-06 10:45:48 +05:30
bcm2835-dma.c dmaengine: bcm2835: Fix cyclic DMA period splitting 2017-03-06 08:49:11 +05:30
coh901318.c Merge branch 'topic/err_reporting' into for-linus 2016-10-03 09:17:33 +05:30
coh901318.h
coh901318_lli.c dmaengine: coh901318: use NULL for pointer initialization 2016-09-26 22:28:24 +05:30
cppi41.c dmaengine: cppi41: Fix an Oops happening in cppi41_dma_probe() 2017-04-06 12:41:59 +05:30
dma-axi-dmac.c dmaengine: axi-dmac: Return IRQ_NONE if no IRQs are pending 2016-07-01 22:56:41 +05:30
dma-jz4740.c dmaengine: jz4740: remove unused arch header 2016-09-26 22:25:57 +05:30
dma-jz4780.c Merge branch 'topic/compile_test' into for-linus 2016-10-03 09:16:03 +05:30
dmaengine.c dmaengine: Fix array index out of bounds warning in __get_unmap_pool() 2017-03-14 10:11:27 +05:30
dmaengine.h dmaengine: add support to provide error result from a DMA transation 2016-08-08 08:11:42 +05:30
dmatest.c dmaengine: dmatest: Add check for supported buffer count (sg_buffers) 2017-05-01 15:51:06 +05:30
edma.c dmaengine updates for 4.10-rc1 2016-12-14 20:42:45 -08:00
ep93xx_dma.c Merge branch 'topic/err_reporting' into for-linus 2016-10-03 09:17:33 +05:30
fsl-edma.c dmaengine: fsl-edma: kill the tasklets upon exit 2016-07-16 20:19:00 +05:30
fsl_raid.c dmaengine: fsl_raid: Fix module autoload 2016-11-14 08:35:13 +05:30
fsl_raid.h dmaengine: Driver support for FSL RaidEngine device. 2015-04-02 16:10:27 +05:30
fsldma.c Merge branch 'topic/unmap_cleanup' into for-linus 2016-10-03 09:36:11 +05:30
fsldma.h
idma64.c dmaengine: idma64: clear LLP_[SD]_EN bits in last descriptor 2016-02-15 22:06:45 +05:30
idma64.h asm-generic changes for 4.6 2016-03-24 23:13:48 -07:00
img-mdc-dma.c dmaengine: img-mdc: remove unused ‘prev_phys’ 2016-12-12 22:25:22 +05:30
imx-dma.c dmaengine: imx-dma: convert callback to helper function 2016-08-08 08:11:39 +05:30
imx-sdma.c dmaengine: imx-sdma: add 1ms delay to ensure SDMA channel is stopped 2017-03-27 10:50:59 +05:30
iop-adma.c dmaengine: iop-adma: convert callback to helper function 2016-08-08 08:11:39 +05:30
k3dma.c dmaengine: k3dma: move to dma_pool_zalloc 2016-12-08 21:24:21 +05:30
Kconfig dmaengine: pl08x: Add support for Faraday Technology FTDMAC020 2017-05-24 09:44:32 +05:30
lpc18xx-dmamux.c dmaengine: add driver for lpc18xx dmamux 2015-08-18 22:12:14 +05:30
Makefile dmaengine: zx: rename zx296702_dma.c to zx_dma.c 2017-01-02 10:53:48 +05:30
mic_x100_dma.c dmaengine: mic_x100_dma: remove unused ‘data’ 2016-12-12 22:25:22 +05:30
mic_x100_dma.h dmaengine: Add an enum for the dmaengine alignment constraints 2015-08-05 10:53:52 +05:30
mmp_pdma.c dmaengine: mmp_pdma: convert callback to helper function 2016-08-08 08:11:39 +05:30
mmp_tdma.c Merge branch 'topic/err_reporting' into for-linus 2016-10-03 09:17:33 +05:30
moxart-dma.c dmaengine: moxart: remove NO_IRQ 2016-09-05 16:40:52 +05:30
mpc512x_dma.c Merge branch 'topic/err_reporting' into for-linus 2016-10-03 09:17:33 +05:30
mv_xor.c dmaengine: mv_xor: use offset_in_page() macro 2017-04-24 18:40:03 +05:30
mv_xor.h dmaengine: mv_xor: Add support for scatter-gather DMA mode 2016-11-25 11:16:36 +05:30
mv_xor_v2.c dmaengine: mv_xor_v2: remove trailing whitespace 2016-07-12 10:10:00 +05:30
mxs-dma.c Merge branch 'topic/no_irq' into for-linus 2016-10-03 09:18:29 +05:30
nbpfaxi.c dmaengine: nbpfaxi: add optional max-burst property for memory reads/writes 2016-11-14 10:07:58 +05:30
of-dma.c dmaengine: of_dma: approximate an average distribution 2016-05-14 13:34:10 +05:30
omap-dma.c dmaengine: omap-dma: Fix the port_window support 2017-01-10 11:08:01 +05:30
pch_dma.c dmaengine: pch_dma: remove unused ‘cookie’ 2016-12-12 22:25:22 +05:30
pl330.c dmaengine: pl330: remove pdata based initialization 2017-03-28 21:37:48 +05:30
pxa_dma.c Revert "dmaengine: pxa_dma: add support for legacy transition" 2016-10-18 20:14:32 +05:30
s3c24xx-dma.c dmaengine: s3c24xx: remove unused ‘cdata’ 2016-12-12 22:25:22 +05:30
sa11x0-dma.c dmaengine: sa11x0: use correct print specifiers for size_t 2016-09-26 22:29:26 +05:30
sirf-dma.c dmaengine: sirf-dma: remove unused ‘sdesc’ 2016-12-12 22:25:22 +05:30
st_fdma.c dmaengine: st_fdma: Fix the error return code in st_fdma_probe() 2016-10-19 22:29:33 +05:30
st_fdma.h dmaengine: st_fdma: Add STMicroelectronics FDMA driver header file 2016-10-18 20:12:06 +05:30
ste_dma40.c dmaengine: ste_dma40: indicate granularity on channels 2017-01-14 20:33:42 +05:30
ste_dma40_ll.c dmaengine: ste_dma40_ll: make d40_width_to_bits static 2016-06-08 08:59:55 +05:30
ste_dma40_ll.h
stm32-dma.c dmaengine: stm32-dma: fix up error dev_err message 2017-03-06 10:41:24 +05:30
sun4i-dma.c dmaengine: sun4i: fix invalid argument 2017-04-24 09:50:05 +05:30
sun6i-dma.c dmaengine: sun6i: fix the uninitialized value for v_lli 2016-11-25 11:49:38 +05:30
tegra20-apb-dma.c dmaengine: tegra20-apb-dma: convert callback to helper function 2016-08-08 08:11:41 +05:30
tegra210-adma.c dmaengine: tegra210-adma: Update driver to use of_pm_clk_add_clk 2016-08-22 11:55:05 +05:30
ti-dma-crossbar.c dmaengine: ti-dma-crossbar: Add some 'of_node_put()' in error path. 2017-01-02 10:37:26 +05:30
timb_dma.c dmaengine: timb_dma: convert callback to helper function 2016-08-08 08:11:41 +05:30
TODO
txx9dmac.c dmaengine: txx9dmac: convert callback to helper function 2016-08-08 08:11:41 +05:30
txx9dmac.h
virt-dma.c dmaengine: virt-dma: Convert to use list_for_each_entry_safe() 2017-04-26 09:03:27 +05:30
virt-dma.h dmaengine: virt-dma: move function declarations 2016-10-01 11:41:39 +05:30
xgene-dma.c dmaengine: xgene-dma: move unmap to before callback 2016-08-08 08:11:43 +05:30
zx_dma.c dmaengine: zx: fix build warning 2017-01-25 15:33:45 +05:30