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This patch is based on previous work by Sony and Himanshu Chauhan.
I have done some cleanup and implemented JProbes and KRETPROBES. The
KRETPROBES part is pretty much copied verbatim from powerpc. A possible
future enhance might be to factor out the common code.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: Himanshu Chauhan <hschauhan@nulltrace.org>
To: linux-mips@linux-mips.org
To: ananth@in.ibm.com,
To: anil.s.keshavamurthy@intel.com
To: davem@davemloft.net
To: masami.hiramatsu.pt@hitachi.com
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1525/
Patchwork: https://patchwork.linux-mips.org/patch/1530/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
To: ananth@in.ibm.com
To: anil.s.keshavamurthy@intel.com
To: davem@davemloft.net
To: masami.hiramatsu.pt@hitachi.com
Cc: linux-kernel@vger.kernel.org
Cc: hschauhan@nulltrace.org
Patchwork: https://patchwork.linux-mips.org/patch/1524/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
To: ananth@in.ibm.com
To: anil.s.keshavamurthy@intel.com
To: davem@davemloft.net
To: masami.hiramatsu.pt@hitachi.com
Cc: linux-kernel@vger.kernel.org,
Cc: hschauhan@nulltrace.org
Patchwork: https://patchwork.linux-mips.org/patch/1529/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This belongs into userland.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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MSI-X interrupts are not supported yet for Octeon, return error if
MSI-X interrupts are requested by driver so that the driver will fall
back to use MSI interrupts.
Signed-off-by: Chandrakala Chavva <cchavva@caviumnetworks.com>
To: linux-mips@linux-mips.org
Cc: David Daney <ddaney@caviumnetworks.com>
Patchwork: https://patchwork.linux-mips.org/patch/1506/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
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Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1507/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The struct cpuinfo_mips.core field should be populated with the
physical core number. For R2 CPUs, this is carried in the low 10 bits
of Ebase.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1505/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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While at it, drop 0x prefix.
Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
To: kernel-janitors@vger.kernel.org
Cc: Chris Dearman <chris@mips.com>
Cc: "Robert P. J. Day" <rpjday@crashcourse.ca>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: André Goddard Rosa <andre.goddard@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1458/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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LOONGSON2_PERFCNT_IRQ is used for the irq number of the performance
overflow interrupts; LOONGSON_PERFCNT_IRQ is unused so remove it.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1494/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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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.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1492/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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set_irq_trigger_mode() is not needed on all platforms so remove it
and move the related source code to mach_init_irq().
This will allow gdium to share the common irq.c without adding an empty
set_irq_trigger_mode().
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1493/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This is used by the forthcoming OCTEON watchdog patch.
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/1498/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The forthcoming Octeon watchdog driver will use them.
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/1499/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The forthcoming watchdog driver will use it.
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/1499/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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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>
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These are OCTEON specific instructions.
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/1496/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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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/1495/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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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>
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Add support for the qi_lb60 (a.k.a QI Ben NanoNote) clamshell device.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1472/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Matt Fleming <matt@console-pimps.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Matt Fleming <matt@console-pimps.org>
Cc: linux-mmc@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1463/
Patchwork: https://patchwork.linux-mips.org/patch/1523/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add support for the NAND controller on JZ4740 SoCs.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: linux-mtd@lists.infradead.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1470/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add support for the LCD controller on JZ4740 SoCs.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-fbdev@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1470/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add the Kbuild files for the JZ4740 architecture and adds JZ4740 support
to the MIPS Kbuild files.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1406/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add platform devices for all the JZ4740 platform drivers.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1469/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add support for initializing arcs_cmdline on JZ4740 based machines and
provides a prom_putchar implementation.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1404/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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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.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1403/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add support for the PWM part of the timer unit on a JZ4740 SoC.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1468/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add support for DMA transfers on JZ4740 SoCs.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1401/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add gpiolib support for JZ4740 SoCs.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1467/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add plat_mem_setup and get_system_type for JZ4740 SoCs.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1399/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add support for suspend/resume and poweroff/reboot on a JZ4740 SoC.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1398/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add clocksource and clockevent support for the timer/counter unit on
JZ4740 SoCs.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1397/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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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.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1396/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add support for IRQ handling on a JZ4740 SoC.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1465/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add support for managing the clocks found on JZ4740 SoC through the
Linux clock API.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1466/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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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.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1464/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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* Rename camel-case InitTLBStart_addr to octeon_bootloader_entry_addr.
* Convert calls to cvmx_read64_uint32(), to simple pointer
dereferences.
* Set proper ebase.
* Don't confuse coreid and cpu numbers.
* Try to maintain consistent bootloader coremask.
* Update the signature and boot_init_vector of supported bootloaders.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1491/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1490/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Also number offline CPUs that could potentially be brought on-line
later.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1489/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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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>
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MSI IRQ numbers are allocated dynamically, so there is no reason to
have all these static definitions.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1487/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The original version went behind the back of everything, leaving
things in an inconsistent state.
Now we use the irq_set_affinity() to do the work for us. This has the
advantage that the IRQ core's view of the affinity stays consistent.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1486/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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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>
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Put all the MSI code in one place (msi-octeon.c). This simplifies
octeon-irq.c and gets rid of some ugly #ifdefs
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1484/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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From: Wolfgang Grandegger <wg@denx.de>
Add basic support for the General Purpose Router (GPR) board from
Trapeze ITS.
Signed-off-by: Wolfgang Grandegger <wg@denx.de>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1460/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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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>
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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.
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Remove the CONFIG_SOC_AU1X00 Kconfig symbol since its job can also be done
by MACH_ALCHEMY, now renamed to MIPS_ALCHEMY.
Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
To: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/1461/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add support for the external T-cache interface. Allow for platform
independent size probing from 512KB to 8MB in powers of two.
Signed-off-by: Ricardo Mendoza <ricmm@gentoo.org>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1477/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Small cleanup of the cache code to get rid of inline asm, in preparation
to give tertiary cache support.
Signed-off-by: Ricardo Mendoza <ricmm@gentoo.org>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1476/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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David Daney
Ralf Baechle
Chandrakala Chavva
Kulikov Vasiliy
Wu Zhangjin
Lars-Peter Clausen
Wolfgang Grandegger
Manuel Lauss
Ricardo Mendoza