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Jim Quinlan f86f55d3ad MIPS: DMA: For BMIPS5000 cores flush region just like non-coherent R10000 
The BMIPS5000 (Zephyr) processor utilizes instruction speculation. A
stale misprediction address in either the JTB or the CRS may trigger
a prefetch inside a region that is currently being used by a DMA engine,
which is not IO-coherent.  This prefetch will fetch a line into the
scache, and that line will soon become stale (ie wrong) during/after the
DMA.  Mayhem ensues.

In dma-default.c, the r10000 is handled as a special case in the same way
that we want to handle Zephyr.  So we generalize the exception cases into
a function, and include Zephyr as one of the processors that needs this
special care.

Signed-off-by: Jim Quinlan <jim2101024@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: cernekee@gmail.com
Patchwork: https://patchwork.linux-mips.org/patch/5776/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-09-04 18:55:58 +02:00
..
alchemy MIPS: Idle: Consolidate all declarations in <asm/idle.h>. 2013-05-22 01:34:27 +02:00
ar7 MIPS: FW: Remove obsolete header file for MTI platforms. 2013-05-08 12:30:10 +02:00
ath79 MIPS: ath79: Switch to the clkdev framework 2013-09-03 23:22:18 +02:00
bcm47xx MIPS: Set default CPU type for BCM47XX platforms 2013-07-30 18:48:50 +02:00
bcm63xx Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-07-13 14:52:21 -07:00
boot MIPS: Add uImage build target 2013-09-03 18:00:01 +02:00
cavium-octeon MIPS: Move declaration of Octeon function fixup_irqs() to header. 2013-09-03 18:19:28 +02:00
cobalt MIPS: Idle: Consolidate all declarations in <asm/idle.h>. 2013-05-22 01:34:27 +02:00
configs MIPS: Lantiq: Add defconfig for xway SoC 2013-09-03 23:22:16 +02:00
dec MIPS: DEC: remove unbuildable promcon.c 2013-06-18 00:31:29 +02:00
emma MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
fw MIPS: sibyte: Declare the cfe_write() buffer as constant 2013-06-21 18:07:02 +02:00
include MIPS: ralink: mt7620: Add cpu-feature-override header 2013-09-04 16:58:31 +02:00
jazz Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-03-02 07:44:16 -08:00
jz4740 MIPS: jz4740: Correct clock gate bit for DMA controller 2013-07-05 11:40:53 +05:30
kernel MIPS: Netlogic: Add support for XLP2XX 2013-09-03 23:22:19 +02:00
kvm MIPS: kvm: Kconfig: Drop HAVE_KVM dependency from VIRTUALIZATION 2013-07-19 12:45:57 +02:00
lantiq MIPS: Lantiq: Falcon: fix asc clock definition 2013-09-03 23:22:16 +02:00
lasat MIPS: Refactor load/entry address calculations 2013-09-03 17:58:37 +02:00
lib MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
loongson Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-07-13 14:52:21 -07:00
loongson1 MIPS: Idle: Consolidate all declarations in <asm/idle.h>. 2013-05-22 01:34:27 +02:00
math-emu MIPS: Remove unreachable break statements from cp1emu.c 2013-08-26 15:33:40 +02:00
mm MIPS: DMA: For BMIPS5000 cores flush region just like non-coherent R10000 2013-09-04 18:55:58 +02:00
mti-malta MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
mti-sead3 MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
netlogic MIPS: Netlogic: Built-in DTB for XLP2xx SoC boards 2013-09-03 23:22:20 +02:00
oprofile MIPS: oprofile: Fix BUG due to smp_processor_id() in preemptible code. 2013-08-05 13:34:22 +02:00
pci MIPS: cavium-octeon: fix I/O space setup on non-PCI systems 2013-08-26 15:31:54 +02:00
pmcs-msp71xx MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
pnx833x MIPS: PNX833x: PNX8335_PCI_ETHERNET_INT depends on CONFIG_SOC_PNX8335 2013-08-05 13:34:22 +02:00
power MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
powertv MIPS: powertv: Fix arguments for free_reserved_area() 2013-07-30 18:50:31 +02:00
ralink MIPS: ralink: Add support for reset-controller API 2013-09-04 18:27:28 +02:00
rb532 MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
sgi-ip22 MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
sgi-ip27 MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
sgi-ip32 MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
sibyte MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code 2013-07-14 19:36:51 -04:00
sni MIPS: SNI: pcit: Fix build error with CONFIG_PCI=n disabled. 2013-06-25 17:10:28 +02:00
txx9 net: pass info struct via netdevice notifier 2013-05-28 13:11:01 -07:00
vr41xx MIPS: Idle: Consolidate all declarations in <asm/idle.h>. 2013-05-22 01:34:27 +02:00
Kbuild KVM/MIPS32: Infrastructure/build files. 2013-05-08 03:55:34 +02:00
Kbuild.platforms MIPS: Delete Wind River ppmc eval board support. 2013-07-01 15:10:53 +02:00
Kconfig MIPS: ralink: Add support for reset-controller API 2013-09-04 18:27:28 +02:00
Kconfig.debug consolidate per-arch stack overflow debugging options 2013-07-04 11:25:39 -07:00
Makefile MIPS: Add uImage build target 2013-09-03 18:00:01 +02:00