UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity
OpenCloudOS-Kernel/drivers/dma
History
Lars-Peter Clausen cbb796ccd8 dmaengine: Use sg_dma_address instead of sg_phys 
dmaengine drivers should always use sg_dma_address instead of sg_phys to get the
addresses for the transfer from a sg element.

To quote Russel King:
	sg_phys(sg) of course has nothing to do with DMA addresses. It's the
	physical address _to the CPU_ of the memory associated with the scatterlist
	entry. That may, or may not have the same value for the DMA engine,
	particularly if IOMMUs are involved.

	And if these drivers are used on ARM, they must be fixed, sooner rather
	than later.  There's patches in the works which will mean we will end up
	with IOMMU support in the DMA mapping later, which means everything I've
	said above will become reality.

The patch has been generated using the following coccinelle patch:
<smpl>
@@
struct scatterlist *sg;
@@
-sg_phys(sg)
+sg_dma_address(sg)
</smpl>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
 		2012-05-11 12:04:38 +05:30
..
ioat dmaengine: fix for cookie changes and merge 2012-03-13 11:58:12 +05:30
ipu dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
ppc4xx dmaengine: ensure all DMA engine drivers initialize their cookies 2012-03-13 11:37:42 +05:30
Kconfig Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2012-03-29 15:34:57 -07:00
Makefile DMA: sa11x0: add SA-11x0 DMA driver 2012-03-07 11:32:21 +00:00
TODO dmaengine: remove ste_dma40 from issue_pending TODO 2011-07-14 04:02:08 +05:30
amba-pl08x.c dmaengine: Use sg_dma_address instead of sg_phys 2012-05-11 12:04:38 +05:30
at_hdmac.c dmaengine: at_hdmac: remove clear-on-read in atc_dostart() 2012-04-20 15:38:05 +05:30
at_hdmac_regs.h dmaengine: at_hdmac: add slave config operation 2012-03-21 21:12:29 +05:30
coh901318.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
coh901318_lli.c dmaengine: Use sg_dma_address instead of sg_phys 2012-05-11 12:04:38 +05:30
coh901318_lli.h dmaengine: move drivers to dma_transfer_direction 2011-10-27 20:53:43 +05:30
dmaengine.c dma: dmaengine: Distinguish between 'dmaengine: failed to get' messages 2012-03-06 17:01:07 +05:30
dmaengine.h dmaengine: consolidate initialization of cookies 2012-03-13 11:37:22 +05:30
dmatest.c dmaengine: fix missing 'cnt' in ?: in dmatest 2012-01-23 11:43:18 -08:00
dw_dmac.c dmaengine: Use sg_dma_address instead of sg_phys 2012-05-11 12:04:38 +05:30
dw_dmac_regs.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30
ep93xx_dma.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
fsldma.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
fsldma.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30
imx-dma.c dmaengine: imx-dma: dont complete descriptor for cyclic dma 2012-04-20 15:28:07 +05:30
imx-sdma.c dma: imx-sdma: keep the callbacks invoked in the tasklet 2012-05-11 11:08:10 +05:30
intel_mid_dma.c dmaengine: Use sg_dma_address instead of sg_phys 2012-05-11 12:04:38 +05:30
intel_mid_dma_regs.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30
iop-adma.c Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2012-03-29 15:34:57 -07:00
iovlock.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mpc512x_dma.c dmaengine: consolidate initialization of cookies 2012-03-13 11:37:22 +05:30
mv_xor.c dmaengine: ensure all DMA engine drivers initialize their cookies 2012-03-13 11:37:42 +05:30
mv_xor.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30
mxs-dma.c dma: mxs-dma: enable channel in device_issue_pending call 2012-04-20 15:35:58 +05:30
pch_dma.c dmaengine: Use sg_dma_address instead of sg_phys 2012-05-11 12:04:38 +05:30
pl330.c DMA: PL330: Remove duplicate header file inclusion 2012-05-11 11:58:15 +05:30
sa11x0-dma.c DMA: sa11x0: add SA-11x0 DMA driver 2012-03-07 11:32:21 +00:00
shdma.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
shdma.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30
sirf-dma.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
ste_dma40.c dma/ste_dma40: fix erroneous comparison 2012-04-23 18:07:05 +05:30
ste_dma40_ll.c dma40: cyclic xfer support 2011-01-30 22:27:21 -08:00
ste_dma40_ll.h dma40: Improve the logic of stopping logical chan 2012-04-23 17:56:17 +05:30
timb_dma.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
txx9dmac.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
txx9dmac.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30