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24d4e7f642
mirror_ubuntu-kernels/arch/mips
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David Daney 24d4e7f642 MIPS: OCTEON: Add semaphore to serialize bootbus accesses. 
Some hardware blocks attached to the OCTEON bootbus run asynchronously
to accesses from the CPUs.  These include MMC/SD host, CF(when using
DMA), and NAND controller.  A bus error, or corrupt data may occur if
a CPU is trying to access a bootbus connected device at the same time
the bus is running asynchronous operations.

To work around these problems we add this semaphore that must be
acquired before initiating bootbus activity.  Subsequent patches will
add users for this.

Signed-off-by: David Daney <david.daney@cavium.com>
[aleksey.makarov@auriga.com: combine the patches]
Signed-off-by: Aleksey Makarov <aleksey.makarov@auriga.com>
Signed-off-by: Chandrakala Chavva <cchavva@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/9459/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-04-01 17:21:42 +02:00
..
alchemy Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2015-02-21 19:41:38 -08:00
ar7 mips: Convert pr_warning to pr_warn 2014-11-24 07:44:51 +01:00
ath25 MIPS: ath25: add Wireless device support 2014-11-24 07:45:29 +01:00
ath79 MIPS: ath79: Read the initrd address from the firmware environment 2014-11-24 07:45:30 +01:00
bcm47xx MIPS: BCM47XX: Support SPROM prefixes for PCI devices 2015-03-24 15:15:33 +01:00
bcm63xx MIPS: Remove useless parentheses 2014-11-24 07:44:49 +01:00
bmips MIPS: BMIPS: Add DTS files for several platforms 2015-04-01 17:21:42 +02:00
boot MIPS: BMIPS: Add DTS files for several platforms 2015-04-01 17:21:42 +02:00
cavium-octeon MIPS: OCTEON: Add semaphore to serialize bootbus accesses. 2015-04-01 17:21:42 +02:00
cobalt
configs MIPS: BMIPS: Enable additional peripheral and CPU support in defconfig 2015-04-01 17:21:41 +02:00
dec Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-06-09 18:10:34 -07:00
emma
fw MIPS: ARC: Use __noreturn / unreachable in ARC termination functions. 2015-01-13 16:04:27 +01:00
include MIPS: OCTEON: Add semaphore to serialize bootbus accesses. 2015-04-01 17:21:42 +02:00
jazz
jz4740 MIPS: jz4740: Implement read_sched_clock 2015-04-01 17:21:31 +02:00
kernel MIPS: Let __dt_register_buses accept a single bus type 2015-04-01 17:21:38 +02:00
kvm KVM: MIPS: Enable after disabling interrupt 2015-03-02 19:18:12 -03:00
lantiq Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
lasat MIPS: Lasat: Add missing CONFIG_PROC_FS dependency to PICVUE_PROC 2014-10-21 17:35:44 +02:00
lib MIPS: lib: memset: Add MIPS R6 support 2015-02-17 15:37:30 +00:00
loongson Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-12-11 17:56:37 -08:00
loongson1 MIPS: Loongson1B: Add a clockevent/clocksource using PWM Timer 2014-11-24 07:45:09 +01:00
math-emu MIPS: Handle MIPS IV, V and R2 FPU instructions on MIPS R6 as well 2015-02-17 15:37:37 +00:00
mm Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2015-02-21 19:41:38 -08:00
mti-malta MIPS: Malta: malta-time: Ensure GIC counter is running 2015-03-31 12:04:13 +02:00
mti-sead3 MIPS: sead3: Corrected get_c0_perfcount_int 2015-02-20 23:53:09 +01:00
net module: remove mod arg from module_free, rename module_memfree(). 2015-01-20 11:38:33 +10:30
netlogic mips: use %*pb[l] to print bitmaps including cpumasks and nodemasks 2015-02-13 21:21:36 -08:00
oprofile MIPS: OProfile: Allow sharing IRQ with timer 2015-03-31 12:04:12 +02:00
paravirt mips: Update the email address of Geert Uytterhoeven 2014-06-02 16:34:41 +02:00
pci MIPS: PCI: Add struct pci_ops member names to initialization 2015-01-22 13:55:31 -06:00
pistachio MIPS: Add support for the IMG Pistachio SoC 2015-03-31 12:04:12 +02:00
pmcs-msp71xx kconfig: use bool instead of boolean for type definition attributes 2015-01-07 13:08:04 +01:00
pnx833x MIPS: PNX833x: Remove checks for CONFIG_I2C_PNX0105 2014-05-23 15:12:39 +02:00
power nosave: consolidate __nosave_{begin,end} in <asm/sections.h> 2014-10-09 22:26:04 -04:00
ralink Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
rb532 MIPS: Replace use of phys_t with phys_addr_t. 2014-11-24 22:47:31 +01:00
sgi-ip22 MIPS: ip22-gio: Remove legacy suspend/resume support 2015-02-20 13:30:55 +01:00
sgi-ip27 MIPS: sgi-ip27: Implement read_sched_clock 2015-04-01 17:21:29 +02:00
sgi-ip32 MIPS: IP32: Use __noreturn instead of open coded attributes in declarations. 2015-01-13 16:04:28 +01:00
sibyte MIPS: Replace use of phys_t with phys_addr_t. 2014-11-24 22:47:31 +01:00
sni
txx9 Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
vr41xx
Kbuild MIPS: net: Add BPF JIT 2014-05-30 16:10:20 +02:00
Kbuild.platforms MIPS: bcm3384: Rename "bcm3384" target to "bmips" 2015-04-01 17:21:35 +02:00
Kconfig MIPS: BMIPS: Add DTS files for several platforms 2015-04-01 17:21:42 +02:00
Kconfig.debug MIPS: kernel: elf: Improve the overall ABI and FPU mode checks 2015-02-17 15:37:39 +00:00
Makefile MIPS: Add dtbs_install target 2015-04-01 17:21:34 +02:00