MIPS: Loongson: Oprofile: add a new do_perfcnt_IRQ()
On FuLoong-2F IP6 is shared by the performance counter overflow interrupt
and the Bonito northbridge interrupt. To reduce overhead only call
do_IRQ() when oprofile is enabled to reduce overhead.
This patch adds an inline function do_perfcnt_IRQ() to hide the #if's ,
which can be shared by the other Loongson machines, i.e. gdium.
David Daney [Sat, 24 Jul 2010 17:16:05 +0000 (10:16 -0700)]
WATCHDOG: Add watchdog driver for OCTEON SOCs
The OCTEON is a MIPS64 based SOC family with an on chip watchdog unit.
The driver is split into two source files one for the C code and one
for assembly. Assembly is needed to handle the NMI and then print the
machine state before the reboot is triggered.
Signed-off-by: David Daney <ddaney@caviumnetworks.com> Cc: Wim Van Sebroeck <wim@iguana.be> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Tony Lindgren <tony@atomide.com> Cc: Marc Zyngier <maz@misterjones.org> Cc: Thierry Reding <thierry.reding@avionic-design.de> Cc: Sam Ravnborg <sam@ravnborg.org>
To: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org,
Patchwork: https://patchwork.linux-mips.org/patch/1503/ Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
create mode 100644 drivers/watchdog/octeon-wdt-main.c
create mode 100644 drivers/watchdog/octeon-wdt-nmi.S
David Daney [Sat, 24 Jul 2010 01:41:43 +0000 (18:41 -0700)]
MIPS: uasm: Add option to export uasm API.
A 'select EXPORT_UASM' in Kconfig will cause the uasm to be exported
for use in modules. When it is exported, all the uasm data and code
cease to be __init and __initdata.
Also daddiu_bug cannot be __cpuinitdata if uasm is exported. The
cleanest thing is to just make it normal data.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
To: wim@iguana.be Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1500/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Tue, 1 Jun 2010 20:18:15 +0000 (13:18 -0700)]
MIPS: Octeon: Implement delays with cycle counter.
Power throttling make deterministic delay loops impossible.
Re-implement delays using the cycle counter. This also allows us to
get rid of the code that calculates loops per jiffy.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1317/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The JZ4740 UART interface is almost 16550 compatible.
The UART module needs to be enabled by setting a bit in the FCR register
and it has support for receive timeout interrupts. Instead of adding yet
another machine specific quirk to the 8250 serial driver we provide a
serial_out implementation which sets the required additional flags.
Add support for the timer/counter unit on a JZ4740 SoC. This code is used
as a common base for the JZ4740 clocksource/clockevent implementation and
PWM support.
MIPS: JZ4740: Add base support for Ingenic JZ4740 System-on-a-Chip
Adds a new cpu type for the JZ4740 to the Linux MIPS architecture code.
It also adds the iomem addresses for the different components found on
a JZ4740 SoC.
David Daney [Fri, 23 Jul 2010 17:43:49 +0000 (10:43 -0700)]
MIPS: Octeon: Make MSI use handle_simple_irq().
The use of handle_percpu_irq() is not really what we want for MSI, use
handle_simple_irq() instead. This is probably the prototypical case
for using handle_simple_irq(), because all the MSIs are dispatched from
the root interrupt service routine.
Also since the base IRQ is not shared, don't pass IRQF_SHARED.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1488/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Fri, 23 Jul 2010 17:43:46 +0000 (10:43 -0700)]
MIPS: Octeon: Improve interrupt handling.
The main change is to change most of the IRQs from handle_percpu_irq
to handle_fasteoi_irq. This necessitates extracting all the .ack code
to common functions that are not exposed to the irq core.
The affinity code now acts more sanely, by doing round-robin
distribution instead of broadcasting.
Because of the change to handle_fasteoi_irq and affinity, some of the
IRQs had to be split into separate groups with their own struct
irq_chip to prevent undefined operations on specific IRQ lines.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1485/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Manuel Lauss [Wed, 21 Jul 2010 12:30:50 +0000 (14:30 +0200)]
MIPS: au1000_eth: Get ethernet address from platform_data
au1000_eth uses firmware calls to get a valid MAC address, and changes
it depending on platform device id. This patch moves this logic out of
the driver into the platform device registration part, where boards with
supported chips can use whatever firmware interface they need; the default
implementation maintains compatibility with existing, YAMON-based firmware.
Tested-by: Wolfgang Grandegger <wg@denx.de> Acked-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
To: Linux-MIPS <linux-mips@linux-mips.org> Cc: netdev@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1481/ Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Manuel Lauss [Thu, 15 Jul 2010 19:45:05 +0000 (21:45 +0200)]
SERIAL: 8250: Remove SERIAL_8250_AU1X00
Remove the SERIAL_8250_AU1X00 config symbol. Instead, use the MIPS_ALCHEMY
one which is always defined when building an Au1x00-based platform.
Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
To: Linux-MIPS <linux-mips@linux-mips.org> Cc: Linux-serial <linux-serial@vger.kernel.org>
Patchwork: https://patchwork.linux-mips.org/patch/1461/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This one depends on a previous patch (which removes SOC_AU1X00 and changes
MACH_ALCHEMY) to apply cleanly (and then actually work), so I'd love for
this to go in via the mips tree.
The commit "MIPS: Tracing: Cleanup the arguments passing of
prepare_ftrace_return" has moved the "jal prepare_ftrace_return"
instruction after the handling of the 3rd argument but forgot to remove
the superfluous space before the related instructions.
Although all EMMAxxx SoCs can support IP2 and IP3 hardware interrupts,
current EMMA2RH plat_irq_dispatch() supports IP2 only. We can make it
configurable in the future, but for the time being, would like to make
things explicitly allcated to IP2 in accordance with plat_irq_dispatch().
For historical reasons, we used to put MIPS CPU IRQs behind SoC-specific
IRQs in the queue, and have been using CPU_IRQ_BASE as MIPS_CPU_IRQ_BASE.
In recent years, however, we've brought it back to normal order, and now
CPU_IRQ_BASE just redefines the generic MIPS_CPU_IRQ_BASE.
At the same time, NUM_CPU_IRQ is also removed as useless.
Shamelessly stealing wisdom from pasemi_mac.c, I found char2hex() could
be replaced with a single call to sscanf(), looks cleaner to me at
least. The result is 100 bytes trimmed off the size of a compiled
cpmac_get_mac() and as an extra bonus it grumbles and gracefully fails
over to using random_ether_addr() when an attempt to parse an invalid
MAC address is made.
Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
To: linux-mips@linux-mips.org Cc: florian@openwrt.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David VomLehn [Thu, 1 Jul 2010 20:37:52 +0000 (13:37 -0700)]
MIPS: PowerTV: Simplify command line handling and needed config changes
Additional changes to Youichi Yuasa's command line simplication code
The PowerTV platform uses a non-standard way to get the kernel command
line--we insert a built-in command line into arcs_cmdline and to
get additional command line information from the bootloader via a
pointer in the a1 register. It is necessary to insert a space between
to the two strings or the last argument from arcs_cmdline and the first
argument from the bootloader may be inadvertantly combined.
It is also necessary to set CONFIG_CMDLINE_BOOL to "y" and to set the
default command line to an empty string to get the simplified code to
work properly in the PowerTV environment.
Signed-off-by: David VomLehn <dvomlehn@cisco.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1438/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Christoph Egger [Wed, 9 Jun 2010 11:23:02 +0000 (13:23 +0200)]
MIPS: PowerTV: Removing dead CONFIG_DIAGNOSTICS
CONFIG_DIAGNOSTICS doesn't exist in Kconfig, therefore removing all
references for it from the source code.
Signed-off-by: Christoph Egger <siccegge@cs.fau.de>
To: David VomLehn <dvomlehn@cisco.com>
To: Yoichi Yuasa <yuasa@linux-mips.org>
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org Cc: vamos@i4.informatik.uni-erlangen.de
Patchwork: https://patchwork.linux-mips.org/patch/1374/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Christoph Egger [Wed, 9 Jun 2010 11:21:30 +0000 (13:21 +0200)]
MIPS: Remove dead CONFIG_MTD_PB1550_BOOT, CONFIG_MTD_PB1550_USER
CONFIG_MTD_PB1550_BOOT, CONFIG_MTD_PB1550_USER doesn't exist in
Kconfig, therefore removing all references for it from the source
code.
Signed-off-by: Christoph Egger <siccegge@cs.fau.de>
To: Manuel Lauss <manuel.lauss@gmail.com>,
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org Cc: vamos@i4.informatik.uni-erlangen.de
Patchwork: https://patchwork.linux-mips.org/patch/1370/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Christoph Egger [Wed, 9 Jun 2010 11:20:41 +0000 (13:20 +0200)]
MIPS: Cavium: Remove dead CONFIG_GDB_CONSOLE
CONFIG_GDB_CONSOLE doesn't exist in Kconfig, therefore removing all
references for it from the source code.
Signed-off-by: Christoph Egger <siccegge@cs.fau.de>
To: David Daney <ddaney@caviumnetworks.com>
To: Yang Shi <yang.shi@windriver.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
To: Tejun Heo <tj@kernel.org>
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org Cc: vamos@i4.informatik.uni-erlangen.de
Patchwork: https://patchwork.linux-mips.org/patch/1368/ Acked-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Kevin Cernekee [Fri, 4 Jun 2010 05:11:25 +0000 (22:11 -0700)]
printk: fix delayed messages from CPU hotplug events
When a secondary CPU is being brought up, it is not uncommon for
printk() to be invoked when cpu_online(smp_processor_id()) == 0. The
case that I witnessed personally was on MIPS:
http://lkml.org/lkml/2010/5/30/4
If (can_use_console() == 0), printk() will spool its output to log_buf
and it will be visible in "dmesg", but that output will NOT be echoed to
the console until somebody calls release_console_sem() from a CPU that
is online. Therefore, the boot time messages from the new CPU can get
stuck in "limbo" for a long time, and might suddenly appear on the
screen when a completely unrelated event (e.g. "eth0: link is down")
occurs.
This patch modifies the console code so that any pending messages are
automatically flushed out to the console whenever a CPU hotplug
operation completes successfully or aborts.
The issue was seen on 2.6.34.
Original patch by Kevin Cernekee with cleanups by akpm and additional fixes
by Santosh Shilimkar. This patch superseeds
https://patchwork.linux-mips.org/patch/1357/.
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
To: <mingo@elte.hu>
To: <akpm@linux-foundation.org>
To: <simon.kagstrom@netinsight.net>
To: <David.Woodhouse@intel.com>
To: <lethal@linux-sh.org> Cc: <linux-kernel@vger.kernel.org> Cc: <linux-mips@linux-mips.org> Reviewed-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/1534/
LKML-Reference: <ede63b5a20af951c755736f035d1e787772d7c28@localhost>
LKML-Reference: <EAF47CD23C76F840A9E7FCE10091EFAB02C5DB6D1F@dbde02.ent.ti.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Sam Ravnborg [Sun, 30 May 2010 14:28:03 +0000 (16:28 +0200)]
MIPS: Refactor arch/mips/boot/compressed/Makefile
- use hostprogs-y for the elf2ecoff
- list all *.o file in targets
- renamed obj-y to vmlinuzobjs-y (it was confusing to re-use a kbuild variable)
- fix all uses of if_changed/cmd
- use kbuild rules to beautify output
- update clean-file to clean vmlinuz.* in top-level directory
- simplied logic in arch/mips/Makefile for compressed targets
The net result is a more kbuild conformant Makefile but
readability did not increase.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
To: linux-mips <linux-mips@linux-mips.org>
To: Wu Zhangjin <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/1304/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Sam Ravnborg [Sun, 30 May 2010 14:27:33 +0000 (16:27 +0200)]
MIPS: Refactor arch/mips/boot/Makefile
- remove stuff that is not needed
VMLINUX assignment, all: rule
- use hostprogs-y for the host program
- use kbuild rules for the three targets - to beautify output
- drop clean-files - it is no longer needed
- simplify arch/mips/Makefile when calling targets in boot/Makefile
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
To: linux-mips <linux-mips@linux-mips.org>
To: Wu Zhangjin <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/1303/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Thu, 5 Aug 2010 12:25:56 +0000 (13:25 +0100)]
MIPS: PNX8550: Move code one directory level up.
It was sharing the nxp directory but no code with pnx833x and will fit
better into the new platform makefile scheme, if moved. Also after the
pnx833x code has been moved up, the pnx8550 Code was the last users of
the nxp dir.
projects / linux-beck.git / log