Ezequiel Garcia [Tue, 28 Apr 2015 22:08:35 +0000 (19:08 -0300)] 
MIPS: Pistachio: Support 8250-based early printk
Pistachio SoCs are capable of early printk with generic 8250 support,
so let's select the options to enable it.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: James Hartley <james.hartley@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/9913/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Jaedon Shin [Fri, 8 May 2015 12:59:18 +0000 (21:59 +0900)] 
MIPS: BMIPS: dts: Add uart device nodes to bcm7xxx platforms
Add two uart device nodes known as the uart1 and uart2 for the bcm7xxx
platforms.
Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/9991/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Florian Fainelli [Tue, 5 May 2015 01:10:57 +0000 (18:10 -0700)] 
MIPS: BMIPS: Add support for Broadcom BCM97435SVMB
Add a DTS file and Kconfig entry for the BCM97435SVMB evaluation board
using bcm7435.dtsi as an example.
The current code needs some tweaking to allow us to use the
dual-threaded dual BMIPS5200 CPUs, so for now we limit ourselves to
allowing just a single CPU to be booted.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: blogic@openwrt.org
Cc: cernekee@chromium.org
Cc: Steven.Hill@imgtec.com
Patchwork: https://patchwork.linux-mips.org/patch/9972/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Florian Fainelli [Tue, 5 May 2015 01:10:56 +0000 (18:10 -0700)]
MIPS: BMIPS: Add BCM7435 dtsi
Add the bare minimum required to boot a BCM7435-based system:
- BMIPS5200 CPU nodes
- Level 1 and 2 interrupt controllers
- UARTs
- EHCI/OHCI controllers
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: blogic@openwrt.org
Cc: cernekee@chromium.org
Cc: Steven.Hill@imgtec.com
Patchwork: https://patchwork.linux-mips.org/patch/9971/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Florian Fainelli [Mon, 4 May 2015 19:09:44 +0000 (12:09 -0700)]
MIPS: BCM63xx: Utilize asm/bmips-spaces.h
Since BCM63xx runs on BMIPS3300 which requires the use of a FIXADDR_TOP
to avoid collisions with the SBR, utilize asm/bmips-spaces.h which
defines FIXADDR_TOP for us now.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: blogic@openwrt.org
Cc: cernekee@chromium.org
Cc: jogo@openwrt.org
Patchwork: https://patchwork.linux-mips.org/patch/9969/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Florian Fainelli [Mon, 4 May 2015 19:09:43 +0000 (12:09 -0700)]
MIPS: BMIPS: Define BMIPS_FIXADDR_TOP in asm/bmips-spaces.h
The FIXADDR_TOP value used by mach-bmips is in fact required whenever we
run on BMIPS3300 BMIPS CPUs, and is not machine, but CPU-specific, move
this constant to asm/bmips-spaces.h and use it in mach-bmips/spaces.h.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: blogic@openwrt.org
Cc: cernekee@chromium.org
Cc: jogo@openwrt.org
Patchwork: https://patchwork.linux-mips.org/patch/9968/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Rafał Miłecki [Fri, 29 May 2015 05:39:26 +0000 (07:39 +0200)] 
MAINTAINERS: Add Broadcom BCM47xx entry
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Cc: Arend van Spriel <arend@broadcom.com>
Patchwork: https://patchwork.linux-mips.org/patch/10207/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:47 +0000 (16:11 +0100)] 
MIPS: ingenic: Initial MIPS Creator CI20 support
Add an initial device tree for the Ingenic JZ4780 based MIPS Creator
CI20 board.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10162/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:46 +0000 (16:11 +0100)]
MIPS: ingenic: Initial JZ4780 support
Support the Ingenic JZ4780 SoC using the existing code under
arch/mips/jz4740 now that it has been generalised sufficiently.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: Joshua Kinard <kumba@gentoo.org>
Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: Andreas Herrmann <andreas.herrmann@caviumnetworks.com>
Patchwork: https://patchwork.linux-mips.org/patch/10164/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:45 +0000 (16:11 +0100)]
MIPS: JZ4740: use Ingenic SoC UART driver
Remove the serial support from arch/mips/jz4740 & make use of the new
Ingenic SoC UART driver. This is done for both regular & early console
output.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Apelete Seketeli <apelete@seketeli.net>
Cc: Alexandre Courbot <gnurou@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10160/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:44 +0000 (16:11 +0100)]
serial: 8250_ingenic: support for Ingenic SoC UARTs
Introduce a driver suitable for use with the UARTs present in
Ingenic SoCs such as the JZ4740 & JZ4780. These are described as being
ns16550 compatible but aren't quite - they require the setting of an
extra bit in the FCR register to enable the UART module. The serial_out
implementation is the same as that in arch/mips/jz4740/serial.c - which
will shortly be removed.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-serial@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: linux-kernel@vger.kernel.org
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: John Crispin <blogic@openwrt.org>
Patchwork: https://patchwork.linux-mips.org/patch/10159/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:43 +0000 (16:11 +0100)]
devicetree: document Ingenic SoC UART binding
Add binding documentation for the UARTs found in Ingenic SoCs.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Acked-by: Rob Herring <robh@kernel.org>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10161/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:42 +0000 (16:11 +0100)]
MIPS: JZ4740: only detect RAM size if not specified in DT
Allow a devicetree to specify the memory present in the system rather
than probing it from the memory controller. This both saves the probing
for systems where the amount of memory is fixed, and will simplify the
bringup of later Ingenic SoCs where the memory controller register
layout differs.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: 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/10163/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:41 +0000 (16:11 +0100)]
MIPS: JZ4740: remove clock.h
The only thing remaining in arch/mips/jz4740/clock.h is declarations of
the jz4740_clock_{suspend,resume} functions. Move these to
arch/mips/include/asm/mach-jz4740/clock.h for consistency with similar
functions, and remove the redundant arch/mips/jz4740/clock.h header.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: 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/10156/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:40 +0000 (16:11 +0100)]
clk: ingenic: add JZ4780 CGU support
Add support for the clocks provided by the CGU in the Ingenic JZ4780
SoC, making use of the SoC-agnostic CGU code to do the heavy lifting.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Co-authored-by: Paul Cercueil <paul@crapouillou.net>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mike Turquette <mturquette@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10157/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:39 +0000 (16:11 +0100)]
MIPS, clk: move jz4740 clock suspend, resume functions to jz4740-cgu
The jz4740-cgu driver already has access to the CGU, so it makes sense
to move the few remaining accesses to the CGU from arch/mips/jz4740
there too. Move the jz4740_clock_{suspend,resume} functions there for
such consistency. The arch/mips/jz4740/clock.c file now contains nothing
more of use & so is removed.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mike Turquette <mturquette@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10158/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:38 +0000 (16:11 +0100)]
MIPS, clk: move jz4740 UDC auto suspend functions to jz4740-cgu
The jz4740-cgu driver already has access to the CGU, so it makes sense
to move the few remaining accesses to the CGU from arch/mips/jz4740
there too. Move the jz4740_clock_udc_{dis,en}able_auto_suspend functions
there for such consistency.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mike Turquette <mturquette@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10154/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:37 +0000 (16:11 +0100)]
MIPS,clk: move jz4740_clock_set_wait_mode to jz4740-cgu
The jz4740-cgu driver already has access to the CGU, so it makes sense
to move the few remaining accesses to the CGU from arch/mips/jz4740
there too. Move jz4740_clock_set_wait_mode for such consistency.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mike Turquette <mturquette@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10153/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:36 +0000 (16:11 +0100)]
MIPS,clk: migrate JZ4740 to common clock framework
Migrate the JZ4740 & the qi_lb60 board to use common clock framework
via the new Ingenic SoC CGU driver. Note that the JZ4740-specific
debugfs code is removed since common clock framework provides its own
debug capabilities.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Co-authored-by: Paul Cercueil <paul@crapouillou.net>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Turquette <mturquette@linaro.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: devicetree@vger.kernel.org
Cc: linux-clk@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10151/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:35 +0000 (16:11 +0100)]
clk: ingenic: add driver for Ingenic SoC CGU clocks
This driver supports the CGU clocks for Ingenic SoCs. It is generic
enough to be usable across at least the JZ4740 to the JZ4780, and will
be made use of on such devices in subsequent commits. This patch by
itself only adds the SoC-agnostic infrastructure that forms the bulk of
the CGU driver for the aforementioned further commits to make use of.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Co-authored-by: Paul Cercueil <paul@crapouillou.net>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mike Turquette <mturquette@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10150/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:34 +0000 (16:11 +0100)]
DEVICETREE: Add Ingenic CGU binding documentation
Document the devicetree binding for Ingenic SoC CGUs, and add headers
defining the clock specifiers for clocks provided by the JZ4740 & JZ4780
CGU blocks.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Turquette <mturquette@linaro.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10152/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:33 +0000 (16:11 +0100)]
MIPS: JZ4740: replace use of jz4740_clock_bdata
Replace uses of the jz4740_clock_bdata struct with calls to clk_get_rate
for the appropriate clock. This is in preparation for migrating the
clocks towards common clock framework & devicetree.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Cc: Apelete Seketeli <apelete@seketeli.net>
Patchwork: https://patchwork.linux-mips.org/patch/10149/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:32 +0000 (16:11 +0100)]
MIPS: JZ4740: Call jz4740_clock_init earlier
Call jz4740_clock_init before any uses of jz4740_clock_bdata occur. This
is in preparation for replacing uses of that struct with calls to
clk_get_rate, which will allow the clocks to be migrated towards common
clock framework & devicetree.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10148/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:31 +0000 (16:11 +0100)]
MIPS/IRQCHIP: Move Ingenic SoC intc driver to drivers/irqchip
Move the driver for Ingenic SoC interrupt controllers into
drivers/irqchip where it belongs.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10147/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:30 +0000 (16:11 +0100)]
MIPS: JZ4740: support newer SoC interrupt controllers
Allow the interrupt controllers of the JZ4770, JZ4775 & JZ4780 SoCs to
be probed via devicetree, supporting the 64 interrupts they provide.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10155/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:29 +0000 (16:11 +0100)]
MIPS: JZ4740: Avoid JZ4740-specific naming
Rename the functions including jz4740 in their names to be more generic
in preparation for supporting further SoCs, and for moving this
interrupt controller code to drivers/irqchip.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Patchwork: https://patchwork.linux-mips.org/patch/10146/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:28 +0000 (16:11 +0100)]
MIPS: JZ4740: read intc base address from DT
Read the base address of the SoC interrupt controller from the device
tree rather than relying upon the JZ4740_INTC_BASE_ADDR macro, in order
to remove the dependency on the asm/mach-jz4740/base.h header.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10145/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:27 +0000 (16:11 +0100)]
MIPS: JZ4740: define IRQ numbers based on number of intc IRQs
For interrupts numbered after those of the interrupt controller, define
their numbers based upon the number of interrupts provided by the SoC
interrupt controller. This is in preparation for supporting newer
Ingenic SoCs which provide more interrupts.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10143/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:26 +0000 (16:11 +0100)]
MIPS: JZ4740: support >32 interrupts
On newer Ingenic SoCs the interrupt controller supports more than 32
interrupts, which it does by duplicating the registers at intervals
of 0x20 bytes within its address space. Add support for an arbitrary
number of interrupts using multiple generic chips, and provide the
number of chips to register from the interrupt controller probe
function.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10141/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:25 +0000 (16:11 +0100)]
MIPS: JZ4740: Remove jz_intc_base global
Avoid the need for the global variable jz_intc_base by introducing a
struct ingenic_intc_data and passing it around as the IRQ handler data.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10144/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:24 +0000 (16:11 +0100)]
MIPS: JZ4740: drop intc debugfs code
The debugfs code becomes a nuisance when attempting to avoid globals,
since the interrupt controller probe function run too early for it to be
safe to create the debugfs files. Drop it.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10139/
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:23 +0000 (16:11 +0100)]
MIPS: JZ4740: register an irq_domain for the interrupt controller
When probing the interrupt controller, register an IRQ domain such
that the interrupts can be translated by devicetree code & thus used
from devicetree.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10140/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:22 +0000 (16:11 +0100)]
MIPS: JZ4740: parse SoC interrupt controller parent IRQ from DT
Rather than hardcoding the IRQ number used to cascade interrupts from
the SoC interrupt controller to the CPU interrupt controller, read that
IRQ number from the DT describing the system.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10137/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:21 +0000 (16:11 +0100)]
MIPS: JZ4740: probe interrupt controller via DT
Declare the JZ4740 interrupt controller for probe via DT using the
standard irqchip_init function, and make use of that function to probe
the controller by adding the appropriate node to the JZ4740 dtsi.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10135/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:20 +0000 (16:11 +0100)]
devicetree: document Ingenic SoC interrupt controller binding
Add binding documentation for Ingenic SoC interrupt controllers.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Acked-by: Rob Herring <robh@kernel.org>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10134/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:19 +0000 (16:11 +0100)]
MIPS: JZ4740: Move arch_init_irq out of arch/mips/jz4740/irq.c
In preparation for moving the JZ4740 interrupt controller driver to
drivers/irqchip, move arch_init_irq into setup.c such that everything
remaining in irq.c is related to said JZ4740 interrupt controller.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10136/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:18 +0000 (16:11 +0100)]
MIPS: JZ4740: use generic plat_irq_dispatch
Make use of the generic plat_irq_dispatch function introduced by commit
85f7cdacbb81 "MIPS: Provide a generic plat_irq_dispatch", in order to
reduce unnecessary code duplication.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10138/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 22:37:42 +0000 (23:37 +0100)]
MIPS: JZ4740: probe CPU interrupt controller via DT
Use the generic irqchip_init function to probe irqchip drivers using DT,
and add the appropriate node to the JZ4740 devicetree in place of the
call to mips_cpu_irq_init.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Patchwork: https://patchwork.linux-mips.org/patch/10166/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:16 +0000 (16:11 +0100)]
IRQCHIP: irq_cpu: declare irqchip table entry
Allow the MIPS CPU interrupt controller to be probed from DT using the
generic __irqchip_of_table for platforms which use irqchip_init. This
will avoid such platforms needing to duplicate the compatible string &
init function pointer.
[ralf@linux-mips.org: Resolved conflict due the preceeding commit that
moves irq-cpu.c.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: linux-kernel@vger.kernel.org
Cc: Felix Fietkau <nbd@openwrt.org>
Patchwork: https://patchwork.linux-mips.org/patch/10131/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Tue, 26 May 2015 16:20:06 +0000 (18:20 +0200)] 
MIPS/IRQCHIP: Move irq_chip from arch/mips to drivers/irqchip.
While at it, rename it because in drivers/irqchip no longer every CPU is
a MIPS.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:15 +0000 (16:11 +0100)]
MIPS: JZ4740: require & include DT
Require a DT for JZ4740 based systems, and add a stub one for the
qi_lb60 (Ben NanoNote) board. Devices will be migrated to being probed
via this DT over time.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10132/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:14 +0000 (16:11 +0100)]
MIPS: ingenic: Add newer vendor IDs
Ingenic have actually varied the vendor/company ID of the XBurst cores
across their range of SoCs, whilst keeping the product ID & revision
constant... Add definitions for vendor IDs known to be used in some of
Ingenic's newer SoCs, and handle them in the same way as the existing
Ingenic vendor ID from the JZ4740.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Co-authored-by: Paul Cercueil <paul@crapouillou.net>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-mips@linux-mips.org
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Joshua Kinard <kumba@gentoo.org>
Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-kernel@vger.kernel.org
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/10128/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:13 +0000 (16:11 +0100)]
MIPS: JZ4740: introduce CONFIG_MACH_INGENIC
In preparation for supporting Ingenic SoCs other than the JZ4740,
introduce MACH_INGENIC to Kconfig & move MACH_JZ4740 to a separate
entry selected by the board when appropriate. This allows MACH_INGENIC
to be used to enable things generic across Ingenic SoCs.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Andrew Bresticker <abrestic@chromium.org>
Patchwork: https://patchwork.linux-mips.org/patch/10130/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:12 +0000 (16:11 +0100)]
devicetree/bindings: add Qi Hardware vendor prefix
Define a vendor prefix for Qi Hardware, creators of the Ben Nanonote
(qi_lb60) among other open devices.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Acked-by: Rob Herring <robh@kernel.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Hayato Suzuki <hytszk@gmail.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: linux-kernel@vger.kernel.org
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Arnaud Ebalard <arno@natisbad.org>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10142/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Paul Burton [Sun, 24 May 2015 15:11:11 +0000 (16:11 +0100)]
devicetree/bindings: add Ingenic Semiconductor vendor prefix
Define a vendor prefix for Ingenic Semiconductor, a vendor of MIPS-based
SoCs. Simply use 'ingenic'.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Acked-by: Rob Herring <robh@kernel.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Hayato Suzuki <hytszk@gmail.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: linux-kernel@vger.kernel.org
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Arnaud Ebalard <arno@natisbad.org>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10129/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Maciej W. Rozycki [Wed, 27 May 2015 13:15:31 +0000 (14:15 +0100)] 
MIPS: DEC: Update CPU overrides
Update CPU overrides for the DEC port with the recent additions, shaving
off some effectively dead code:
text data bss dec hex filename
5586952 233132
5990368 11810452 b43694 vmlinux.32-old
5581248 233140
5990368 11804756 b42054 vmlinux.32-new
text data bss dec hex filename
6036936 356648
10756544 17150128 105b0b0 vmlinux.64-old
6029896 360752
10756544 17147192 105a538 vmlinux.64-new
The data size increase is due to the special alignment requirement of
`init_thread_union' aka `.data..init_task' moving it up to the nearest
page boundary and making the amount of padding at its front rely on how
far within a page text ends.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10197/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Brian Norris [Mon, 18 May 2015 23:21:12 +0000 (16:21 -0700)] 
MIPS: netlogic: remove unnecessary MTD partition probe specification
The cmdlinepart parser is already supported in the default probe.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: linux-mtd@lists.infradead.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10071/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Maciej W. Rozycki [Wed, 27 May 2015 13:15:20 +0000 (14:15 +0100)]
MIPS: tlb-r3k: Optimise a TLBWI barrier in TLB invalidation
Replace an explicit barrier with a useful processor instruction in TLB
invalidation, following several other such cases elsewhere in
`tlb-r3k.c'.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10196/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Maciej W. Rozycki [Wed, 27 May 2015 13:15:15 +0000 (14:15 +0100)]
MIPS: tlb-r3k: Move CP0.Wired register initialisation to `tlb_init'
Move the initialisation of the CP0.Wired register implemented by Toshiba
TX3922 and TX3927 processors from `tx39_cache_init' to `tlb_init' where
it belongs, correcting code structure and making sure initialisation
does not rely on `tx39_cache_init' being called before `tlb_init' to
work correctly.
Make `r3k_have_wired_reg' static as it's no longer externally referred
to; remove a stale declaration too.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10195/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Maciej W. Rozycki [Wed, 27 May 2015 13:15:08 +0000 (14:15 +0100)]
MIPS: tlb-r3k: Also invalidate wired TLB entries on boot
Most R3k processor implementations have their 8 first TLB entries fixed
as wired, so we always skip them in TLB invalidation. That however
means any leftover entries present there at boot will stay throughout
the life of the kernel, unless replaced with new ones.
So rename `local_flush_tlb_all' to `local_flush_tlb_from' and make it
accept the TLB entry to start from. Then use 0 initially at bootstrap,
and the first regular entry later on, bypassing any wired entries.
Wrap the latter arrangement into a new `local_flush_tlb_all' entry
point.
There is no need to disable interrupts in the call made from `tlb_init'
because it's made before the interrupt subsystem has been initialised;
this is also true for secondary processors, should we ever support R3k
SMP. So move this piece of code to new `local_flush_tlb_all'.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10194/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
James Hogan [Tue, 19 May 2015 08:50:38 +0000 (09:50 +0100)] 
MIPS: dump_tlb: Take XPA into account
XPA extends the physical addresses on MIPS32, including the EntryLo
registers. Update dump_tlb() to concatenate the PFNX field from the high
end of the EntryLo registers (as read by mfhc0).
The width of physical and virtual addresses are also separated to show
only 8 nibbles of virtual but 11 nibbles of physical with XPA.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10077/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
James Hogan [Tue, 19 May 2015 08:50:37 +0000 (09:50 +0100)]
MIPS: dump_tlb: Take RI/XI bits into account
The RI/XI bits when present are above the PFN field in the EntryLo
registers, at bits 63,62 when read with dmfc0, and bits 31,30 when read
with mfc0. This makes them appear as part of the physical address, since
the other bits are masked with PAGE_MASK, for example:
Index: 253 pgmask=16kb va=
77b18000 asid=75
[pa=
1000744000 c=5 d=1 v=1 g=0] [pa=
100134c000 c=5 d=1 v=1 g=0]
The physical addresses have bit 36 set, which corresponds to bit 30 of
EntryLo1, the XI bit.
Explicitly mask off the RI and XI bits from the printed physical
address, and print the RI and XI bits separately if they exist, giving
output more like this:
Index: 226 pgmask=16kb va=
77be0000 asid=79
[ri=0 xi=1 pa=
01288000 c=5 d=1 v=1 g=0] [ri=0 xi=0 pa=
010e4000 c=5 d=0 v=1 g=0]
Cc: linux-mips@linux-mips.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: David Daney <ddaney@caviumnetworks.com>
Patchwork: https://patchwork.linux-mips.org/patch/10080/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
James Hogan [Tue, 19 May 2015 08:50:36 +0000 (09:50 +0100)]
MIPS: dump_tlb: Take EHINV bit into account
The EHINV bit in EntryHi allows a TLB entry to be properly marked
invalid so that EntryHi doesn't have to be set to a unique value to
avoid machine check exceptions due to multiple matching entries.
Unfortunately dump_tlb() doesn't take this into account so it will print
all the uninteresting invalid TLB entries if the current ASID happens to
be 00. Therefore add a condition to skip entries which are marked
invalid with the EHINV bit.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10076/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
James Hogan [Tue, 19 May 2015 08:50:35 +0000 (09:50 +0100)]
MIPS: dump_tlb: Take global bit into account
The TLB only matches the ASID when the global bit isn't set, so
dump_tlb() shouldn't really be skipping global entries just because the
ASID doesn't match. Fix the condition to read the TLB entry's global bit
from EntryLo0. Note that after a TLB read the global bits in both
EntryLo registers reflect the same global bit in the TLB entry.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10079/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
James Hogan [Tue, 19 May 2015 08:50:34 +0000 (09:50 +0100)]
MIPS: dump_tlb: Make use of EntryLo bit definitions
Make use of recently added EntryLo bit definitions in mipsregs.h when
dumping TLB contents.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10075/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
James Hogan [Tue, 19 May 2015 08:50:33 +0000 (09:50 +0100)]
MIPS: dump_tlb: Refactor TLB matching
Refactor the TLB matching code in dump_tlb() slightly so that the
conditions which can cause a TLB entry to be skipped can be more easily
extended. This should prevent the match condition getting unwieldy once
it is updated to take further conditions into account.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10081/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
James Hogan [Tue, 19 May 2015 08:50:32 +0000 (09:50 +0100)]
MIPS: dump_tlb: Use tlbr hazard macros
Use the new tlb read hazard macros from <asm/hazards.h> rather than the
local BARRIER() macro which uses 7 ops regardless of the kernel
configuration.
We use mtc0_tlbr_hazard for the hazard between mtc0 to the index
register and the tlbr, and tlb_read_hazard for the hazard between the
tlbr and the mfc0 of the TLB registers written by tlbr.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10074/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
James Hogan [Tue, 19 May 2015 08:50:31 +0000 (09:50 +0100)]
MIPS: mipsregs.h: Add EntryLo bit definitions
Add definitions for EntryLo register bits in mipsregs.h. The R4000
compatible ones are prefixed MIPS_ENTRYLO_ and the R3000 compatible ones
are prefixed R3K_ENTRYLO_.
These will be used in later patches.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/10073/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
James Hogan [Tue, 19 May 2015 08:50:30 +0000 (09:50 +0100)]
MIPS: hazards: Add hazard macros for tlb read
Add hazard macros to <asm/hazards.h> for the following hazards around
tlbr (TLB read) instructions, which are used in TLB dumping code and
some KVM TLB management code:
- mtc0_tlbr_hazard
Between mtc0 (Index) and tlbr. This is copied from mtc0_tlbw_hazard in
all cases on the assumption that tlbr always has similar data user
timings to tlbw.
- tlb_read_hazard
Between tlbr and mfc0 (various TLB registers). This is copied from
tlbw_use_hazard in all cases on the assumption that tlbr has similar
data writer characteristics to tlbw, and mfc0 has similar data user
characteristics to loads and stores.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10078/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
James Hogan [Tue, 19 May 2015 08:50:29 +0000 (09:50 +0100)]
MIPS: Add SysRq operation to dump TLBs on all CPUs
Add a MIPS specific SysRq operation to dump the TLB entries on all CPUs,
using the 'x' trigger key.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10072/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Petri Gynther [Fri, 8 May 2015 22:10:10 +0000 (15:10 -0700)] 
MIPS: traps: print Exception Code in __show_regs()
Print Exception Code when printing the Cause register.
Signed-off-by: Petri Gynther <pgynther@google.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9998/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Rafał Miłecki [Tue, 12 May 2015 11:05:18 +0000 (13:05 +0200)]
MIPS: BCM47xx: Read board info for all bcma buses
Extra bcma buses may be totally different models, see following dump:
boardtype=0x0646
pci/1/1/boardtype=0x0545
pci/2/1/boardtype=0x62b
We need to detect them properly to allow drivers apply some board
specific hacks.
[ralf@linux-mips.org: folded in Rafal's fix.]
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: https://patchwork.linux-mips.org/patch/10028/
Patchwork: https://patchwork.linux-mips.org/patch/10048/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Rafał Miłecki [Tue, 12 May 2015 09:54:48 +0000 (11:54 +0200)]
MIPS: BCM47xx: Extract info about et2 interface
New devices may have more than 1 Ethernet core (device). We should
extract info about them to make it available to Ethernet drivers.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Hante Meuleman <meuleman@broadcom.com>
Cc: Ian Kent <raven@themaw.net>
Patchwork: https://patchwork.linux-mips.org/patch/10027/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Rafał Miłecki [Tue, 12 May 2015 09:31:02 +0000 (11:31 +0200)]
MIPS: BCM47xx: Extract all boardflags to new u32 fields
For years we planned to get rid of old u16 fields, let's start doing it
with MIPS code. This process will take some time, it requires doing the
same in ssb/bcma and then switching all drivers to new fields. This will
be handled in separated patches submitted to appropriate trees.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: https://patchwork.linux-mips.org/patch/10026/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Rafał Miłecki [Tue, 12 May 2015 16:46:12 +0000 (18:46 +0200)]
MIPS: BCM47XX: Simplify function looking for NVRAM entry
First of all it shouldn't modify copied NVRAM just to make sure it can
loop over all entries. It's enough to just compare current position
pointer with the end of buffer address.
Secondly buffer is guaranteed to be \0 ended, so we don't need strnchr.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Hante Meuleman <meuleman@broadcom.com>
Cc: Ian Kent <raven@themaw.net>
Patchwork: https://patchwork.linux-mips.org/patch/10032/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Rafał Miłecki [Tue, 12 May 2015 16:46:11 +0000 (18:46 +0200)]
MIPS: BCM47XX: Make sure NVRAM buffer ends with \0
This will simplify reading its contents.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Hante Meuleman <meuleman@broadcom.com>
Cc: Ian Kent <raven@themaw.net>
Patchwork: https://patchwork.linux-mips.org/patch/10031/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Wed, 6 May 2015 11:09:54 +0000 (12:09 +0100)]
MIPS: Malta: Make maltasmvp_defconfig useful again.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Fri, 6 Sep 2013 18:24:48 +0000 (20:24 +0200)]
MIPS: ftrace: Enable support for syscall tracepoints.
All the necessary support code is already there so all that's left is
to enable the feature in kconfig.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Linus Torvalds [Mon, 15 Jun 2015 01:51:10 +0000 (15:51 -1000)] 
Linux 4.1-rc8
Linus Torvalds [Mon, 15 Jun 2015 01:48:26 +0000 (15:48 -1000)]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine fixes from Vinod Koul:
"Here are hopefully last set of fixes for 4.1. This time we have:
- fixing pause capability reporting on both dmaengine pause & resume
support by Krzysztof
- locking fix fir at_xdmac by Ludovic
- slave configuration fix for at_xdmac by Ludovic"
* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: Fix choppy sound because of unimplemented resume
dmaengine: at_xdmac: rework slave configuration part
dmaengine: at_xdmac: lock fixes
Linus Torvalds [Mon, 15 Jun 2015 01:46:43 +0000 (15:46 -1000)]
Merge tag 'ntb-4.1' of git://github.com/jonmason/ntb
Pull NTB fixes from Jon Mason:
"I apologize for the tardiness of this request. Here are a couple of
last minute NTB bug fixes for v4.1:
NTB bug fixes to address issues in unmapping the MW reg base and
vbase, and an uninitialized variable on Atom platforms"
* tag 'ntb-4.1' of git://github.com/jonmason/ntb:
ntb: initialize max_mw for Atom before using it
ntb: iounmap MW reg and vbase in error path
Linus Torvalds [Mon, 15 Jun 2015 01:38:57 +0000 (15:38 -1000)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus
Pull more MIPS fixes from Ralf Baechle:
"Another round of 4.1 MIPS fixes, one fix to a MIPS-specific #if
condition in lib/mpi, one fix to the MIPS GIC irqchip driver and one
SSB fix.
Details:
- fix handling of clock in chipco SSB driver.
- fix two MIPS-specific #if conditions to correctly work for GCC 5.1.
- fix damage to R6 pgtable bits done by XPA support.
- fix possible crash due to unloading modules that contain statically
defined platform devices.
- fix disabling of the MSA ASE on context switch to also work
correctly when a new thread/process has the CPU for the very first
time.
This is part of linux-next and has been beaten to death on
Imagination's test farm.
While things are not looking too grim this pull request also means the
rate of fixes for 4.1 remains nearly constant so I'd not be unhappy if
you'd delay the release"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MPI: MIPS: Fix compilation error with GCC 5.1
IRQCHIP: mips-gic: Don't nest calls to do_IRQ()
MIPS: MSA: bugfix - disable MSA correctly for new threads/processes.
MIPS: Loongson: Do not register 8250 platform device from module.
MIPS: Cobalt: Do not build MTD platform device registration code as module.
SSB: Fix handling of ssb_pmu_get_alp_clock()
MIPS: pgtable-bits: Fix XPA damage to R6 definitions.
Linus Torvalds [Mon, 15 Jun 2015 00:53:02 +0000 (14:53 -1000)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull irqchip fix from Thomas Gleixner:
"A single fix for an off by one bug in the sunxi irqchip driver"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip: sunxi-nmi: Fix off-by-one error in irq iterator
Linus Torvalds [Mon, 15 Jun 2015 00:03:11 +0000 (14:03 -1000)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull lockdep fix from Ingo Molnar:
"A lockdep/modules unload race fix that can oops"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
lockdep: Fix a race between /proc/lock_stat and module unload
Linus Torvalds [Mon, 15 Jun 2015 00:00:13 +0000 (14:00 -1000)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"A regression fix for a crash, and a Intel HSW uncore PMU driver fix"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Revert "perf/x86/intel/uncore: Move uncore_box_init() out of driver initialization"
perf/x86/intel/uncore: Fix CBOX bit wide and UBOX reg on Haswell-EP
Linus Torvalds [Sun, 14 Jun 2015 23:55:24 +0000 (13:55 -1000)]
Merge tag 'sound-4.1-rc8' of git://git./linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Most of commits are regression fixes for HD-audio: a few corner case
fixes for regmap transition, and i915 binding issues.
In addition, a quirk for another USB-audio device supporting DSD"
* tag 'sound-4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Abort the probe without i915 binding for HSW/BDW
ALSA: hda - Re-add the lost fake mute support
ALSA: hda - Continue probing even if i915 binding fails
ALSA: hda - Don't actually write registers for caps overwrites
ALSA: hda - fix number of devices query on hotplug
ALSA: usb-audio: add native DSD support for JLsounds I2SoverUSB
Jaedon Shin [Fri, 12 Jun 2015 09:04:14 +0000 (18:04 +0900)]
MPI: MIPS: Fix compilation error with GCC 5.1
This patch fixes mips compilation error:
lib/mpi/generic_mpih-mul1.c: In function 'mpihelp_mul_1':
lib/mpi/longlong.h:651:2: error: impossible constraint in 'asm'
Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/10546/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Rabin Vincent [Fri, 12 Jun 2015 08:01:56 +0000 (10:01 +0200)] 
IRQCHIP: mips-gic: Don't nest calls to do_IRQ()
The GIC chained handlers use do_IRQ() to call the subhandlers. This
means that irq_enter() calls get nested, which leads to preempt count
looking like we're in nested interrupts, which in turn leads to all
system time being accounted as IRQ time in account_system_time().
Fix it by using generic_handle_irq(). Since these same functions are
used in some systems (if cpu_has_veic) from a low-level vectored
interrupt handler which does not go throught do_IRQ(), we need to do it
conditionally.
Signed-off-by: Rabin Vincent <rabin.vincent@axis.com>
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mips@linux-mips.org
Cc: tglx@linutronix.de
Cc: jason@lakedaemon.net
Patchwork: https://patchwork.linux-mips.org/patch/10545/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Linus Torvalds [Sat, 13 Jun 2015 06:54:16 +0000 (20:54 -1000)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Fix uninitialized struct station_info in cfg80211_wireless_stats(),
from Johannes Berg.
2) Revert commit attempt to fix ipv6 protocol resubmission, it adds
regressions.
3) Endless loops can be created in bridge port lists, fix from Nikolay
Aleksandrov.
4) Don't WARN_ON() if sk->sk_forward_alloc is non-zero in
sk_clear_memalloc, it is a legal situation during swap deactivation.
Fix from Mel Gorman.
5) Fix order of disabling interrupts and unlocking NAPI in enic driver
to avoid a race. From Govindarajulu Varadarajan.
6) High and low register writes are swapped when programming the start
of periodic output in igb driver. From Richard Cochran.
7) Fix device rename handling in mpls stack, from Robert Shearman.
8) Do not trigger compaction synchronously when optimistically trying
to allocate an order 3 page in alloc_skb_with_frags() and
skb_page_frag_refill(). From Shaohua Li.
9) Authentication with COOKIE_ECHO is not handled properly in SCTP, fix
from Marcelo Ricardo Leitner.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
Doc: networking: Fix URL for wiki.wireshark.org in udplite.txt
sctp: allow authenticating DATA chunks that are bundled with COOKIE_ECHO
net: don't wait for order-3 page allocation
mpls: handle device renames for per-device sysctls
net: igb: fix the start time for periodic output signals
enic: fix memory leak in rq_clean
enic: check return value for stat dump
enic: unlock napi busy poll before unmasking intr
net, swap: Remove a warning and clarify why sk_mem_reclaim is required when deactivating swap
bridge: fix multicast router rlist endless loop
tipc: disconnect socket directly after probe failure
Revert "ipv6: Fix protocol resubmission"
cfg80211: wext: clear sinfo struct before calling driver
Masanari Iida [Fri, 12 Jun 2015 15:23:21 +0000 (00:23 +0900)] 
Doc: networking: Fix URL for wiki.wireshark.org in udplite.txt
This patch fix URL (http to https) for wiki.wireshark.org.
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Marcelo Ricardo Leitner [Thu, 11 Jun 2015 17:49:46 +0000 (14:49 -0300)] 
sctp: allow authenticating DATA chunks that are bundled with COOKIE_ECHO
Currently, we can ask to authenticate DATA chunks and we can send DATA
chunks on the same packet as COOKIE_ECHO, but if you try to combine
both, the DATA chunk will be sent unauthenticated and peer won't accept
it, leading to a communication failure.
This happens because even though the data was queued after it was
requested to authenticate DATA chunks, it was also queued before we
could know that remote peer can handle authenticating, so
sctp_auth_send_cid() returns false.
The fix is whenever we set up an active key, re-check send queue for
chunks that now should be authenticated. As a result, such packet will
now contain COOKIE_ECHO + AUTH + DATA chunks, in that order.
Reported-by: Liu Wei <weliu@redhat.com>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 12 Jun 2015 18:35:19 +0000 (11:35 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block layer fixes from Jens Axboe:
"Remember about a week ago when I sent the last pull request for 4.1?
Well, I lied. Now, I don't want to shift the blame, but Dan, Ming,
and Richard made a liar out of me.
Here are three small patches that should go into 4.1. More
specifically, this pull request contains:
- A Kconfig dependency for the pmem block driver, so it can't be
selected if HAS_IOMEM isn't availble. From Richard Weinberger.
- A fix for genhd, making the ext_devt_lock softirq safe. This makes
lockdep happier, since we also end up grabbing this lock on release
off the softirq path. From Dan Williams.
- A blk-mq software queue release fix from Ming Lei.
Last two are headed to stable, first fixes an issue introduced in this
cycle"
* 'for-linus' of git://git.kernel.dk/linux-block:
block: pmem: Add dependency on HAS_IOMEM
block: fix ext_dev_lock lockdep report
blk-mq: free hctx->ctxs in queue's release handler
Linus Torvalds [Fri, 12 Jun 2015 18:33:03 +0000 (11:33 -0700)]
Merge tag 'md/4.1-rc7-fixes' of git://neil.brown.name/md
Pull three more md fixes from Neil Brown:
"Hasn't been a good cycle for md has it :-(
The main issue fixed here is a rare race which can result in two
reshape threads running at once, which doesn't end well.
Also a minor issue with a write to a sysfs file returning the wrong
value. Backports to 4.0-stable are indicated"
* tag 'md/4.1-rc7-fixes' of git://neil.brown.name/md:
md: make sure MD_RECOVERY_DONE is clear before starting recovery/resync
md: Close race when setting 'action' to 'idle'.
md: don't return 0 from array_state_store
Linus Torvalds [Fri, 12 Jun 2015 18:28:57 +0000 (11:28 -0700)]
Merge git://git.infradead.org/intel-iommu
Pull VT-d hardware workarounds from David Woodhouse:
"This contains a workaround for hardware issues which I *thought* were
never going to be seen on production hardware. I'm glad I checked
that before the 4.1 release...
Firstly, PASID support is so broken on existing chips that we're just
going to declare the old capability bit 28 as 'reserved' and change
the VT-d spec to move PASID support to another bit. So any existing
hardware doesn't support SVM; it only sets that (now) meaningless bit
28.
That patch *wasn't* imperative for 4.1 because we don't have PASID
support yet. But *even* the extended context tables are broken — if
you just enable the wider tables and use none of the new bits in them,
which is precisely what 4.1 does, you find that translations don't
work. It's this problem which I thought was caught in time to be
fixed before production, but wasn't.
To avoid triggering this issue, we now *only* enable the extended
context tables on hardware which also advertises "we have PASID
support and we actually tested it this time" with the new PASID
feature bit.
In addition, I've added an 'intel_iommu=ecs_off' command line
parameter to allow us to disable it manually if we need to"
* git://git.infradead.org/intel-iommu:
iommu/vt-d: Only enable extended context tables if PASID is supported
iommu/vt-d: Change PASID support to bit 40 of Extended Capability Register
David Woodhouse [Fri, 12 Jun 2015 09:15:49 +0000 (10:15 +0100)] 
iommu/vt-d: Only enable extended context tables if PASID is supported
Although the extended tables are theoretically a completely orthogonal
feature to PASID and anything else that *uses* the newly-available bits,
some of the early hardware has problems even when all we do is enable
them and use only the same bits that were in the old context tables.
For now, there's no motivation to support extended tables unless we're
going to use PASID support to do SVM. So just don't use them unless
PASID support is advertised too. Also add a command-line bailout just in
case later chips also have issues.
The equivalent problem for PASID support has already been fixed with the
upcoming VT-d spec update and commit
bd00c606a ("iommu/vt-d: Change
PASID support to bit 40 of Extended Capability Register"), because the
problematic platforms use the old definition of the PASID-capable bit,
which is now marked as reserved and meaningless.
So with this change, we'll magically start using ECS again only when we
see the new hardware advertising "hey, we have PASID support and we
actually tested it this time" on bit 40.
The VT-d hardware architect has promised that we are not going to have
any reason to support ECS *without* PASID any time soon, and he'll make
sure he checks with us before changing that.
In the future, if hypothetical new features also use new bits in the
context tables and can be seen on implementations *without* PASID support,
we might need to add their feature bits to the ecs_enabled() macro.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
NeilBrown [Fri, 12 Jun 2015 10:05:04 +0000 (20:05 +1000)] 
md: make sure MD_RECOVERY_DONE is clear before starting recovery/resync
MD_RECOVERY_DONE is normally cleared by md_check_recovery after a
resync etc finished. However it is possible for raid5_start_reshape
to race and start a reshape before MD_RECOVERY_DONE is cleared. This
can lean to multiple reshapes running at the same time, which isn't
good.
To make sure it is cleared before starting a reshape, and also clear
it when reaping a thread, just to be safe.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Fri, 12 Jun 2015 09:51:27 +0000 (19:51 +1000)]
md: Close race when setting 'action' to 'idle'.
Checking ->sync_thread without holding the mddev_lock()
isn't really safe, even after flushing the workqueue which
ensures md_start_sync() has been run.
While this code is waiting for the lock, md_check_recovery could reap
the thread itself, and then start another thread (e.g. recovery might
finish, then reshape starts). When this thread gets the lock
md_start_sync() hasn't run so it doesn't get reaped, but
MD_RECOVERY_RUNNING gets cleared. This allows two threads to start
which leads to confusion.
So don't both if MD_RECOVERY_RUNNING isn't set, but if it is do
the flush and the test and the reap all under the mddev_lock to
avoid any race with md_check_recovery.
Signed-off-by: NeilBrown <neilb@suse.de>
Fixes: 6791875e2e53 ("md: make reconfig_mutex optional for writes to md sysfs files.")
Cc: stable@vger.kernel.org (v4.0+)
NeilBrown [Fri, 12 Jun 2015 09:46:44 +0000 (19:46 +1000)]
md: don't return 0 from array_state_store
Returning zero from a 'store' function is bad.
The return value should be either len length of the string
or an error.
So use 'len' if 'err' is zero.
Fixes: 6791875e2e53 ("md: make reconfig_mutex optional for writes to md sysfs files.")
Signed-off-by: NeilBrown <neilb@suse.de>
Cc: stable@vger.kernel (v4.0+)
Krzysztof Kozlowski [Wed, 10 Jun 2015 08:17:07 +0000 (17:17 +0900)] 
dmaengine: Fix choppy sound because of unimplemented resume
Some drivers implement only pause operation (no resuming). Example is
pl330 where pause is needed for getting residuum. pl330 does not support
resume operation, transfer must be stopped after pause.
However for slaves this is exposed always as "pause and resume" which
introduces subtle errors on Odroid U3 board (Exynos4412 with pl330).
After adding pause function to pl330 driver the audio playback
(utilizing DMA) gets choppy after some time (approximately 24 hours).
Fix this by exposing "cmd_pause" if and only if pause and resume are
implemented.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reported-by: gabriel@unseen.is
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: <stable@vger.kernel.org>
Fixes: 88987d2c7534 ("dmaengine: pl330: add DMA_PAUSE feature")
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Takashi Iwai [Fri, 12 Jun 2015 05:53:58 +0000 (07:53 +0200)] 
ALSA: hda - Abort the probe without i915 binding for HSW/BDW
The previous patch tried to continue the probe if i915 binding fails.
For for simplicity reason, we haven't implemented abort even for
controller chips that are dedicated for HDMI/DP on HSW and BDW.
However, Mengdong suggested that this can be dangerous; BIOS may
disable gfx power well although the PCI entry for HD-audio is left,
and this may result in the unexpected behavior, kernel errors, etc.
For avoiding this situation, abort the probe at i915 binding failure
only for HSW/BDW chips selectively. For other chips, it still
continues.
Fixes: bf06848bdbe5 ('ALSA: hda - Continue probing even if i915 binding fails')
Reported-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Linus Torvalds [Fri, 12 Jun 2015 00:35:14 +0000 (17:35 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"i915 and radeon fixes:
i915:
fix for connector oops regression
DDC probing fix
radeon:
two radeon reverts, along with a freeze workaround and a fix"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/radeon: Make sure radeon_vm_bo_set_addr always unreserves the BO
Revert "drm/radeon: adjust pll when audio is not enabled"
Revert "drm/radeon: don't share plls if monitors differ in audio support"
drm/radeon: fix freeze for laptop with Turks/Thames GPU.
drm/i915: Fix DDC probe for passive adapters
drm/i915: Properly initialize SDVO analog connectors
Shaohua Li [Thu, 11 Jun 2015 23:50:48 +0000 (16:50 -0700)] 
net: don't wait for order-3 page allocation
We saw excessive direct memory compaction triggered by skb_page_frag_refill.
This causes performance issues and add latency. Commit
5640f7685831e0
introduces the order-3 allocation. According to the changelog, the order-3
allocation isn't a must-have but to improve performance. But direct memory
compaction has high overhead. The benefit of order-3 allocation can't
compensate the overhead of direct memory compaction.
This patch makes the order-3 page allocation atomic. If there is no memory
pressure and memory isn't fragmented, the alloction will still success, so we
don't sacrifice the order-3 benefit here. If the atomic allocation fails,
direct memory compaction will not be triggered, skb_page_frag_refill will
fallback to order-0 immediately, hence the direct memory compaction overhead is
avoided. In the allocation failure case, kswapd is waken up and doing
compaction, so chances are allocation could success next time.
alloc_skb_with_frags is the same.
The mellanox driver does similar thing, if this is accepted, we must fix
the driver too.
V3: fix the same issue in alloc_skb_with_frags as pointed out by Eric
V2: make the changelog clearer
Cc: Eric Dumazet <edumazet@google.com>
Cc: Chris Mason <clm@fb.com>
Cc: Debabrata Banerjee <dbavatar@gmail.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dave Airlie [Fri, 12 Jun 2015 00:11:50 +0000 (10:11 +1000)] 
Merge tag 'drm-intel-fixes-2015-06-11' of git://anongit.freedesktop.org/drm-intel into drm-fixes
Fix for the regression Linus called out, and another for probing
dongles.
* tag 'drm-intel-fixes-2015-06-11' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Fix DDC probe for passive adapters
drm/i915: Properly initialize SDVO analog connectors
Dave Airlie [Fri, 12 Jun 2015 00:11:14 +0000 (10:11 +1000)]
Merge branch 'drm-fixes-4.1' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
Two regression reverts, and two fixes, one for a dpm boot freeze.
* 'drm-fixes-4.1' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon: Make sure radeon_vm_bo_set_addr always unreserves the BO
Revert "drm/radeon: adjust pll when audio is not enabled"
Revert "drm/radeon: don't share plls if monitors differ in audio support"
drm/radeon: fix freeze for laptop with Turks/Thames GPU.
Robert Shearman [Thu, 11 Jun 2015 18:58:26 +0000 (19:58 +0100)] 
mpls: handle device renames for per-device sysctls
If a device is renamed and the original name is subsequently reused
for a new device, the following warning is generated:
sysctl duplicate entry: /net/mpls/conf/veth0//input
CPU: 3 PID: 1379 Comm: ip Not tainted 4.1.0-rc4+ #20
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
0000000000000000 0000000000000000 ffffffff81566aaf 0000000000000000
ffffffff81236279 ffff88002f7d7f00 0000000000000000 ffff88000db336d8
ffff88000db33698 0000000000000005 ffff88002e046000 ffff8800168c9280
Call Trace:
[<
ffffffff81566aaf>] ? dump_stack+0x40/0x50
[<
ffffffff81236279>] ? __register_sysctl_table+0x289/0x5a0
[<
ffffffffa051a24f>] ? mpls_dev_notify+0x1ff/0x300 [mpls_router]
[<
ffffffff8108db7f>] ? notifier_call_chain+0x4f/0x70
[<
ffffffff81470e72>] ? register_netdevice+0x2b2/0x480
[<
ffffffffa0524748>] ? veth_newlink+0x178/0x2d3 [veth]
[<
ffffffff8147f84c>] ? rtnl_newlink+0x73c/0x8e0
[<
ffffffff8147f27a>] ? rtnl_newlink+0x16a/0x8e0
[<
ffffffff81459ff2>] ? __kmalloc_reserve.isra.30+0x32/0x90
[<
ffffffff8147ccfd>] ? rtnetlink_rcv_msg+0x8d/0x250
[<
ffffffff8145b027>] ? __alloc_skb+0x47/0x1f0
[<
ffffffff8149badb>] ? __netlink_lookup+0xab/0xe0
[<
ffffffff8147cc70>] ? rtnetlink_rcv+0x30/0x30
[<
ffffffff8149e7a0>] ? netlink_rcv_skb+0xb0/0xd0
[<
ffffffff8147cc64>] ? rtnetlink_rcv+0x24/0x30
[<
ffffffff8149df17>] ? netlink_unicast+0x107/0x1a0
[<
ffffffff8149e4be>] ? netlink_sendmsg+0x50e/0x630
[<
ffffffff8145209c>] ? sock_sendmsg+0x3c/0x50
[<
ffffffff81452beb>] ? ___sys_sendmsg+0x27b/0x290
[<
ffffffff811bd258>] ? mem_cgroup_try_charge+0x88/0x110
[<
ffffffff811bd5b6>] ? mem_cgroup_commit_charge+0x56/0xa0
[<
ffffffff811d7700>] ? do_filp_open+0x30/0xa0
[<
ffffffff8145336e>] ? __sys_sendmsg+0x3e/0x80
[<
ffffffff8156c3f2>] ? system_call_fastpath+0x16/0x75
Fix this by unregistering the previous sysctl table (registered for
the path containing the original device name) and re-registering the
table for the path containing the new device name.
Fixes: 37bde79979c3 ("mpls: Per-device enabling of packet input")
Reported-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: Robert Shearman <rshearma@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Cochran [Thu, 11 Jun 2015 12:51:30 +0000 (14:51 +0200)] 
net: igb: fix the start time for periodic output signals
When programming the start of a periodic output, the code wrongly places
the seconds value into the "low" register and the nanoseconds into the
"high" register. Even though this is backwards, it slipped through my
testing, because the re-arming code in the interrupt service routine is
correct, and the signal does appear starting with the second edge.
This patch fixes the issue by programming the registers correctly.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Weinberger [Mon, 4 May 2015 18:58:57 +0000 (20:58 +0200)] 
block: pmem: Add dependency on HAS_IOMEM
Not all architectures have io memory.
Fixes:
drivers/block/pmem.c: In function ‘pmem_alloc’:
drivers/block/pmem.c:146:2: error: implicit declaration of function ‘ioremap_nocache’ [-Werror=implicit-function-declaration]
pmem->virt_addr = ioremap_nocache(pmem->phys_addr, pmem->size);
^
drivers/block/pmem.c:146:18: warning: assignment makes pointer from integer without a cast [enabled by default]
pmem->virt_addr = ioremap_nocache(pmem->phys_addr, pmem->size);
^
drivers/block/pmem.c:182:2: error: implicit declaration of function ‘iounmap’ [-Werror=implicit-function-declaration]
iounmap(pmem->virt_addr);
^
Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Linus Torvalds [Thu, 11 Jun 2015 21:00:10 +0000 (14:00 -0700)]
Merge tag 'trace-rb-bm-fix-4.1-rc7' of git://git./linux/kernel/git/rostedt/linux-trace
Pull ring buffer benchmark buglet fix from Steven Rostedt:
"Wang Long fixed a minor bug in the module parameter for the ring
buffer benchmark, where the produce_fifo was being ignored and the
producer thread's priority was being set with the consumer_fifo
parameter"
* tag 'trace-rb-bm-fix-4.1-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ring-buffer-benchmark: Fix the wrong sched_priority of producer
Dan Williams [Thu, 11 Jun 2015 03:47:14 +0000 (23:47 -0400)] 
block: fix ext_dev_lock lockdep report
=================================
[ INFO: inconsistent lock state ]
4.1.0-rc7+ #217 Tainted: G O
---------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
swapper/6/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
(ext_devt_lock){+.?...}, at: [<
ffffffff8143a60c>] blk_free_devt+0x3c/0x70
{SOFTIRQ-ON-W} state was registered at:
[<
ffffffff810bf6b1>] __lock_acquire+0x461/0x1e70
[<
ffffffff810c1947>] lock_acquire+0xb7/0x290
[<
ffffffff818ac3a8>] _raw_spin_lock+0x38/0x50
[<
ffffffff8143a07d>] blk_alloc_devt+0x6d/0xd0 <-- take the lock in process context
[..]
[<
ffffffff810bf64e>] __lock_acquire+0x3fe/0x1e70
[<
ffffffff810c00ad>] ? __lock_acquire+0xe5d/0x1e70
[<
ffffffff810c1947>] lock_acquire+0xb7/0x290
[<
ffffffff8143a60c>] ? blk_free_devt+0x3c/0x70
[<
ffffffff818ac3a8>] _raw_spin_lock+0x38/0x50
[<
ffffffff8143a60c>] ? blk_free_devt+0x3c/0x70
[<
ffffffff8143a60c>] blk_free_devt+0x3c/0x70 <-- take the lock in softirq
[<
ffffffff8143bfec>] part_release+0x1c/0x50
[<
ffffffff8158edf6>] device_release+0x36/0xb0
[<
ffffffff8145ac2b>] kobject_cleanup+0x7b/0x1a0
[<
ffffffff8145aad0>] kobject_put+0x30/0x70
[<
ffffffff8158f147>] put_device+0x17/0x20
[<
ffffffff8143c29c>] delete_partition_rcu_cb+0x16c/0x180
[<
ffffffff8143c130>] ? read_dev_sector+0xa0/0xa0
[<
ffffffff810e0e0f>] rcu_process_callbacks+0x2ff/0xa90
[<
ffffffff810e0dcf>] ? rcu_process_callbacks+0x2bf/0xa90
[<
ffffffff81067e2e>] __do_softirq+0xde/0x600
Neil sees this in his tests and it also triggers on pmem driver unbind
for the libnvdimm tests. This fix is on top of an initial fix by Keith
for incorrect usage of mutex_lock() in this path:
2da78092dda1 "block:
Fix dev_t minor allocation lifetime". Both this and
2da78092dda1 are
candidates for -stable.
Fixes: 2da78092dda1 ("block: Fix dev_t minor allocation lifetime")
Cc: <stable@vger.kernel.org>
Cc: Keith Busch <keith.busch@intel.com>
Reported-by: NeilBrown <neilb@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Michel Dänzer [Thu, 11 Jun 2015 09:38:38 +0000 (18:38 +0900)] 
drm/radeon: Make sure radeon_vm_bo_set_addr always unreserves the BO
Some error paths didn't unreserve the BO. This resulted in a deadlock
down the road on the next attempt to reserve the (still reserved) BO.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=90873
Cc: stable@vger.kernel.org
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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