iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
98e58b01e1
linux/arch/mips
History
Hauke Mehrtens 98e58b01e1 MIPS: Lantiq: Lock DMA register accesses for SMP 
The DMA controller channel and port configuration is changed by
selecting the port or channel in one register and then update the
configuration in other registers. This has to be done in an atomic
operation. Previously only the local interrupts were deactivated which
works for single CPU systems. If the system supports SMP a better
locking is needed, use spinlocks instead.
On more recent SoCs (at least xrx200 and later) there are two memory
regions to change the configuration, there we could use one area for
each CPU and do not have to synchronize between the CPUs and more.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: john@phrozen.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14912/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-25 02:51:12 +01:00
..
alchemy MIPS: Alchemy: Remove duplicate initializer 2017-01-25 02:51:10 +01:00
ar7
ath25
ath79 mips: ath79: clock:- Unmap region obtained by of_iomap 2017-01-25 02:51:12 +01:00
bcm47xx MIPS: BCM47XX: Add Luxul devices to the database 2017-01-25 02:51:12 +01:00
bcm63xx MIPS: BCM63xx: Let clk_disable() return immediately if clk is NULL 2016-10-04 16:13:57 +02:00
bmips MIPS: BMIPS: Support APPENDED_DTB 2016-10-06 17:31:02 +02:00
boot MIPS: BMIPS: Add support SPI device nodes 2017-01-24 18:30:34 +01:00
cavium-octeon MIPS: Octeon: Avoid empty-body warning 2017-01-25 02:51:11 +01:00
cobalt MIPS: Cobalt: Fix typo 2016-08-03 08:16:30 +02:00
configs MIPS: Update ip27_defconfig for SCSI_DH change 2017-01-24 18:30:35 +01:00
dec Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
emma MIPS: Avoid old-style declaration 2017-01-25 02:51:11 +01:00
fw
generic MIPS: generic/kexec: add support for a DTB passed in a separate buffer 2017-01-03 16:34:46 +01:00
include MIPS: BCM47XX: Add Luxul devices to the database 2017-01-25 02:51:12 +01:00
jazz Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
jz4740 clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
kernel MIPS: syscall: Return directly in mips_mmap() 2017-01-25 02:51:11 +01:00
kvm KVM: MIPS: Precalculate MMIO load resume PC 2016-10-26 13:43:55 +02:00
lantiq MIPS: Lantiq: Lock DMA register accesses for SMP 2017-01-25 02:51:12 +01:00
lasat mips: separate extable.h, switch module.h to it 2016-10-05 18:36:18 -04:00
lib MIPS: Fix modversions 2017-01-24 18:30:35 +01:00
loongson32 MIPS: Loongson1B: Change the OSC clock name 2017-01-03 16:48:40 +01:00
loongson64 MIPS: Loongson64: Fix empty-body warning in dma_alloc 2017-01-25 02:51:11 +01:00
math-emu Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
mm MIPS: sc-mips: L2 cache is inclusive of L1 dcache for CM3 2017-01-03 16:48:40 +01:00
mti-malta clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
net treewide: remove redundant #include <linux/kconfig.h> 2016-10-11 15:06:33 -07:00
netlogic MIPS: Avoid old-style declaration 2017-01-25 02:51:11 +01:00
oprofile Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-12-25 14:05:56 -08:00
paravirt
pci MIPS: TXx9: Modernize printing of kernel messages 2017-01-03 16:34:32 +01:00
pic32 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-08-06 09:13:11 -04:00
pistachio Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-08-06 09:13:11 -04:00
pmcs-msp71xx
pnx833x MIPS: Squash lines for simple wrapper functions 2016-10-04 16:13:57 +02:00
power
ralink MIPS: ralink: Remove unused rt*_wdt_reset functions 2017-01-25 02:51:10 +01:00
rb532
sgi-ip22 MIPS: ip22: Fix ip28 build for modern gcc 2017-01-25 02:51:11 +01:00
sgi-ip27 MIPS: Avoid old-style declaration 2017-01-25 02:51:11 +01:00
sgi-ip32 MIPS: Avoid old-style declaration 2017-01-25 02:51:11 +01:00
sibyte Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
sni char/genrtc: remove asm-generic/rtc.h from mips 2016-06-04 00:23:36 +02:00
txx9 MIPS: TXx9: Modernize printing of kernel messages 2017-01-03 16:34:32 +01:00
vdso MIPS: Fix modversions 2017-01-24 18:30:35 +01:00
vr41xx MIPS: VR41xx: Fix typo 2016-05-28 12:35:09 +02:00
xilfpga MIPS: xilfpga: Use irqchip instead of the legacy way 2017-01-03 16:34:39 +01:00
Kbuild
Kbuild.platforms MIPS: generic: Convert SEAD-3 to a generic board 2016-10-06 18:04:20 +02:00
Kconfig MIPS: Generic: Fix big endian CPUs on generic machine 2017-01-25 02:51:12 +01:00
Kconfig.debug MIPS: Remove compact branch policy Kconfig entries 2016-09-13 14:14:50 +02:00
Makefile MIPS: 'make -s' should be silent 2017-01-25 02:51:09 +01:00
Makefile.postlink MIPS: Use Makefile.postlink to insert relocations into vmlinux 2017-01-03 16:34:37 +01:00