Files
android_kernel_xiaomi_sm8450/arch/mips/include/asm
Paul Burton 20d330645c MIPS: Support per-device DMA coherence
On some MIPS systems, a subset of devices may have DMA coherent with CPU
caches. For example in systems including a MIPS I/O Coherence Unit
(IOCU), some devices may be connected to that IOCU whilst others are
not.

Prior to this patch, we have a plat_device_is_coherent() function but no
implementation which does anything besides return a global true or
false, optionally chosen at runtime. For devices such as those described
above this is insufficient.

Fix this by tracking DMA coherence on a per-device basis with a
dma_coherent field in struct dev_archdata. Setting this from
arch_setup_dma_ops() takes care of devices which set the dma-coherent
property via device tree, and any PCI devices beneath a bridge described
in DT, automatically.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14349/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-06 18:02:01 +02:00
..
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2016-05-28 12:35:06 +02:00
2015-06-21 21:52:44 +02:00
2016-05-28 12:35:07 +02:00
2014-08-26 02:18:58 +02:00
2016-05-28 12:35:07 +02:00
2016-04-03 12:32:09 +02:00
2016-05-28 12:35:08 +02:00
2016-04-03 12:32:09 +02:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2015-11-11 08:36:36 +01:00
2014-01-22 20:19:02 +01:00
2015-05-13 10:55:42 +02:00
2013-02-01 10:00:22 +01:00
2015-11-12 11:35:47 +01:00
2016-10-04 16:13:57 +02:00
2013-02-01 10:00:22 +01:00
2013-01-24 13:20:09 +01:00
2015-05-28 15:31:53 +02:00
2014-08-26 02:18:56 +02:00
2012-03-28 18:30:02 +01:00
2014-05-24 00:07:01 +02:00
2013-02-01 10:00:22 +01:00
2016-02-01 23:36:38 +01:00
2013-02-01 10:00:22 +01:00
2016-05-28 12:35:06 +02:00
2011-07-26 16:49:47 -07:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2016-05-13 14:01:58 +02:00
2015-09-03 12:08:05 +02:00
2012-12-13 16:46:47 +01:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2016-05-28 12:35:07 +02:00
2016-09-29 18:59:49 +02:00
2013-02-01 10:00:22 +01:00
2016-10-04 16:13:57 +02:00
2015-09-03 12:08:05 +02:00
2014-08-02 00:06:38 +02:00
2013-02-01 10:00:22 +01:00
2014-01-22 20:19:02 +01:00
2016-04-03 12:32:09 +02:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2016-05-09 12:00:02 +02:00
2015-09-03 12:08:05 +02:00
2011-12-07 22:01:45 +00:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2016-07-05 16:08:35 +02:00
2013-09-18 17:13:58 +02:00
2013-02-01 10:00:22 +01:00
2016-05-09 12:00:02 +02:00