Commit Graph

6074 Commits

Author SHA1 Message Date
Catalin Marinas 3bbf7157ac arm64: Convert pte handling from inline asm to using (cmp)xchg
With the support for hardware updates of the access and dirty states,
the following pte handling functions had to be implemented using
exclusives: __ptep_test_and_clear_young(), ptep_get_and_clear(),
ptep_set_wrprotect() and ptep_set_access_flags(). To take advantage of
the LSE atomic instructions and also make the code cleaner, convert
these pte functions to use the more generic cmpxchg()/xchg().

Reviewed-by: Will Deacon <will.deacon@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Steve Capper <steve.capper@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-21 11:12:29 +01:00
Romain Perier 6f2dea1f5f arm64: dts: rockchip: Add basic cpu frequencies for RK3368
This adds and enable the operating points that have been tested and are
currently supported by the SoC. This also adds clocks for ARMCLKL and
ARMCLKB.

Signed-off-by: Romain Perier <romain.perier@collabora.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2017-08-21 12:08:37 +02:00
Joseph Chen 1e28037ec8 arm64: dts: rockchip: add rk805 node for rk3328-evb
RK805 consists of 4 DCDCs, 3 LDOs. It's different from RK808
and RK818 that there are 2 output only GPIOs, we should add
properties "gpio-controller" and "gpio-cells = <2>".

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2017-08-21 12:03:51 +02:00
Ingo Molnar 94edf6f3c2 Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney:

 - Removal of spin_unlock_wait()
 - SRCU updates
 - Torture-test updates
 - Documentation updates
 - Miscellaneous fixes
 - CPU-hotplug fixes
 - Miscellaneous non-RCU fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-08-21 09:45:19 +02:00
Ard Biesheuvel 760b61d76d efi/libstub/arm64: Use hidden attribute for struct screen_info reference
To prevent the compiler from emitting absolute references to screen_info
when building position independent code, redeclare the symbol with hidden
visibility.

Tested-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20170818194947.19347-3-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-08-21 09:43:49 +02:00
Arnd Bergmann b2d3b787e8 Allwinner arm64 device tree changes for 4.14, round 2
The usual improvement patches:
 
   - PMIC, USB and WiFi enabled for Bananapi M64
 
   - New board added: NanoPi A64
 
   - New board added: Olimex A64-OLinuXino
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Merge tag 'sunxi-dt64-for-4.14-2' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into next/dt64

Pull "Allwinner arm64 device tree changes for 4.14, round 2" from Chen-Yu Tsai:

The usual improvement patches:

  - PMIC, USB and WiFi enabled for Bananapi M64

  - New board added: NanoPi A64

  - New board added: Olimex A64-OLinuXino

* tag 'sunxi-dt64-for-4.14-2' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  arm64: allwinner: a64: Add A64-OLinuXino initial support
  arm64: allwinner: a64: Add initial NanoPi A64 support
  arm64: allwinner: a64: add proper support for the Wi-Fi on BPi M64
  arm64: allwinner: a64: enable AXP803 for Banana Pi M64
  arm64: allwinner: a64: enable USB host controller for BPi M64
2017-08-21 09:33:36 +02:00
Arnd Bergmann ddd0eb3d29 Allwinner arm64 defconfig changes for 4.14
Enable X-Powers AXP series PMIC mfd and regulator support by default.
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Merge tag 'sunxi-config64-for-4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into next/arm64

Pull "Allwinner arm64 defconfig changes for 4.14" from Chen-Yu Tsai:

Enable X-Powers AXP series PMIC mfd and regulator support by default.

* tag 'sunxi-config64-for-4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  arm64: defconfig: Enable REGULATOR_AXP20X
  arm64: defconfig: Enable MFD_AXP20X_RSB
2017-08-21 09:21:26 +02:00
Linus Torvalds 2615a38f14 Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
 "A few small fixes for timer drivers:

   - Prevent infinite recursion in the arm architected timer driver with
     ftrace

   - Propagate error codes to the caller in case of failure in EM STI
     driver

   - Adjust a bogus loop iteration in the arm architected timer driver

   - Add a missing Kconfig dependency to the pistachio clocksource to
     prevent build failures

   - Correctly check for IS_ERR() instead of NULL in the shared timer-of
     code"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource/drivers/arm_arch_timer: Avoid infinite recursion when ftrace is enabled
  clocksource/drivers/Kconfig: Fix CLKSRC_PISTACHIO dependencies
  clocksource/drivers/timer-of: Checking for IS_ERR() instead of NULL
  clocksource/drivers/em_sti: Fix error return codes in em_sti_probe()
  clocksource/drivers/arm_arch_timer: Fix mem frame loop initialization
2017-08-20 09:34:24 -07:00
Jeffy Chen 147f6ec570 arm64: dts: rockchip: Assign mic irq to correct device for Gru
Currently we are assigning mic irq to rt5514 i2c driver, which is wrong.
Assign it to rt5514 spi driver instead.

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2017-08-19 01:16:38 +02:00
Kever Yang 617f4472bd arm64: dts: rockchip: init rk3399 vop clock rates
We need to init vop aclk and hclk incase the U-Boot does not do
the initialize.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Mark Yao <mark.yao@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2017-08-19 01:16:35 +02:00
David Wu 0bb2ef6117 arm64: dts: rockchip: Add pwm nodes for rk3328
There are 4 pwm channels built in rk3328 soc, need to configure
the both APB clock and bus clock.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2017-08-19 01:05:06 +02:00
Jeffy Chen a4c6bbcb9e arm64: dts: rockchip: Fix wrong rt5514 dmic delay property for Gru
According to rt5514 dt-binding, it should be "realtek,dmic-init-delay-ms".

Fixes: 48f4d9796d (arm64: dts: rockchip: add Gru/Kevin DTS)
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2017-08-19 00:59:57 +02:00
Kees Cook c715b72c1b mm: revert x86_64 and arm64 ELF_ET_DYN_BASE base changes
Moving the x86_64 and arm64 PIE base from 0x555555554000 to 0x000100000000
broke AddressSanitizer.  This is a partial revert of:

  eab09532d4 ("binfmt_elf: use ELF_ET_DYN_BASE only for PIE")
  02445990a9 ("arm64: move ELF_ET_DYN_BASE to 4GB / 4MB")

The AddressSanitizer tool has hard-coded expectations about where
executable mappings are loaded.

The motivation for changing the PIE base in the above commits was to
avoid the Stack-Clash CVEs that allowed executable mappings to get too
close to heap and stack.  This was mainly a problem on 32-bit, but the
64-bit bases were moved too, in an effort to proactively protect those
systems (proofs of concept do exist that show 64-bit collisions, but
other recent changes to fix stack accounting and setuid behaviors will
minimize the impact).

The new 32-bit PIE base is fine for ASan (since it matches the ET_EXEC
base), so only the 64-bit PIE base needs to be reverted to let x86 and
arm64 ASan binaries run again.  Future changes to the 64-bit PIE base on
these architectures can be made optional once a more dynamic method for
dealing with AddressSanitizer is found.  (e.g.  always loading PIE into
the mmap region for marked binaries.)

Link: http://lkml.kernel.org/r/20170807201542.GA21271@beast
Fixes: eab09532d4 ("binfmt_elf: use ELF_ET_DYN_BASE only for PIE")
Fixes: 02445990a9 ("arm64: move ELF_ET_DYN_BASE to 4GB / 4MB")
Signed-off-by: Kees Cook <keescook@chromium.org>
Reported-by: Kostya Serebryany <kcc@google.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-08-18 15:32:02 -07:00
Arnd Bergmann f4da0ed9d6 Qualcomm ARM64 Based defconfig Updates for v4.14
* Enable Qualcomm IPQ8074 clocks and pinctrl
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Merge tag 'qcom-arm64-defconfig-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into next/arm64

Pull "Qualcomm ARM64 Based defconfig Updates for v4.14" from Andy Gross:

* Enable Qualcomm IPQ8074 clocks and pinctrl

* tag 'qcom-arm64-defconfig-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux:
  arm64: defconfig: Enable QCOM IPQ8074 clock and pinctrl
2017-08-19 00:06:43 +02:00
Arnd Bergmann 354865087b ZTE SoC updates for 4.14:
- Select PINCTRL for ZTE platform, so that pinctrl driver for ZX296718
    can be enabled.
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Merge tag 'zte-soc-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/arm64

Pull "ZTE SoC updates for 4.14" from Shawn Guo:

 - Select PINCTRL for ZTE platform, so that pinctrl driver for ZX296718
   can be enabled.

* tag 'zte-soc-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  arm64: select PINCTRL for ZTE platform
2017-08-19 00:01:03 +02:00
Arnd Bergmann 32f4049a1f This pull request contains ARM64 defconfig changes for Broadcom ARM64-based
SoCs for 4.14, please pull the following:
 
 - Markus enables the Broadcom STB AVS thermal monitoring driver as a module
   which is currently queued in Rui Zhang's tree
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Merge tag 'arm-soc/for-4.14/defconfig-arm64' of http://github.com/Broadcom/stblinux into next/arm64

Pull "Broadcom defconfig-arm64 changes for 4.14" from Florian Fainelli:

This pull request contains ARM64 defconfig changes for Broadcom ARM64-based
SoCs for 4.14, please pull the following:

- Markus enables the Broadcom STB AVS thermal monitoring driver as a module
  which is currently queued in Rui Zhang's tree

* tag 'arm-soc/for-4.14/defconfig-arm64' of http://github.com/Broadcom/stblinux:
  arm64: defconfig: add CONFIG_BRCMSTB_THERMAL
2017-08-18 23:59:07 +02:00
Arnd Bergmann 6d6776e140 mvebu dt64 for 4.14 (part 2)
- Enable uSD on ESPRESSObin (Armada 37xx based board)
 - Add NAND support on Armada 7K/8K SoCs
 - Enable USB host on Armada-7040-DB and Armada-8040-DB boards
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Merge tag 'mvebu-dt64-4.14-2' of git://git.infradead.org/linux-mvebu into next/dt64

Pull "mvebu dt64 for 4.14 (part 2)" from Gregory CLEMENT:

- Enable uSD on ESPRESSObin (Armada 37xx based board)
- Add NAND support on Armada 7K/8K SoCs
- Enable USB host on Armada-7040-DB and Armada-8040-DB boards

* tag 'mvebu-dt64-4.14-2' of git://git.infradead.org/linux-mvebu:
  ARM64: dts: marvell: enable USB host on Armada-8040-DB
  ARM64: dts: marvell: enable USB host on Armada-7040-DB
  ARM64: dts: marvell: add NAND support on the CP110
  ARM64: dts: marvell: armada-37xx: Enable uSD on ESPRESSObin
  arm64: dts: marvell: Fully re-order nodes in Marvell CP110 dtsi files
2017-08-18 23:19:35 +02:00
Rob Herring 6b5fc336c4 arm64: dts: apm: fix PCI bus dtc warnings
dtc recently added PCI bus checks. Fix these warnings.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Duc Dang <dhdang@apm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2017-08-18 23:17:43 +02:00
Arnd Bergmann fc9cc2797a Second Round of Renesas ARM64 Based SoC DT Updates for v4.14
* Add PFC device node to R-Car D3 (r8a77995)
 
   This is a step towards enabling devices that use multiplexed pins
   - including ethernet - on boards that use the r8a7796 SoC.
 
 * Add USB nodes to R-Car M3-W (r8a7796)
 
   This is a step towards enabling USB devices on boards that
   use the r8a7796 SoC.
 
 * Use newly added Gen-3 fallback compat string
 
   This is consistent with ongoing efforts to use per-generation
   fallback strings where appropriate across devices found
   on R-Car SoCs. The aim of the effort being to strike a balance
   between the limited information available about the compatibility
   of devices found on different SoCs and the desire to ease enabling
   devices on new SoCs.
 
   This has no run-time effect due to the presence of a per-SoC
   compat string.
 
 * Cleanup whitespace and extra LVDS port label
 
   Minor cleanups, no run-time effect.
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Merge tag 'renesas-arm64-dt2-for-v4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/dt64

Pull "Second Round of Renesas ARM64 Based SoC DT Updates for v4.14" from Simon Horman:

* Add PFC device node to R-Car D3 (r8a77995)

  This is a step towards enabling devices that use multiplexed pins
  - including ethernet - on boards that use the r8a7796 SoC.

* Add USB nodes to R-Car M3-W (r8a7796)

  This is a step towards enabling USB devices on boards that
  use the r8a7796 SoC.

* Use newly added Gen-3 fallback compat string

  This is consistent with ongoing efforts to use per-generation
  fallback strings where appropriate across devices found
  on R-Car SoCs. The aim of the effort being to strike a balance
  between the limited information available about the compatibility
  of devices found on different SoCs and the desire to ease enabling
  devices on new SoCs.

  This has no run-time effect due to the presence of a per-SoC
  compat string.

* Cleanup whitespace and extra LVDS port label

  Minor cleanups, no run-time effect.

* tag 'renesas-arm64-dt2-for-v4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  arm64: dts: r8a77995: add pfc device node
  arm64: dts: r8a7796: Add HSUSB device node
  arm64: dts: r8a7796: Add USB-DMAC device nodes
  arm64: dts: r8a7796: Add USB3.0 host device node
  arm64: dts: r8a7796: add USB2.0 Host (EHCI/OHCI) device nodes
  arm64: dts: r8a7796: add usb2_phy device nodes
  arm64: dts: r8a7795: correct whitespace of companion property
  arm64: dts: r8a7795: Use R-Car SATA Gen3 fallback compat string
  arm64: dts: salvator-common: Remove extra LVDS port label
2017-08-18 23:14:15 +02:00
Arnd Bergmann a282ac2d41 Qualcomm ARM64 Updates for v4.14 Part 2
* Add IPQ8074 SoC and HK01 board support
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Merge tag 'qcom-arm64-for-4.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into next/dt64

Pull "Qualcomm ARM64 Updates for v4.14 Part 2" from Andy Gross:

* Add IPQ8074 SoC and HK01 board support

* tag 'qcom-arm64-for-4.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux:
  arm64: dts: Add ipq8074 SoC and HK01 board support
2017-08-18 23:04:36 +02:00
Arnd Bergmann 522a6efef2 This pull request contains Broadcom ARM-based SoCs Device Tree changes for
4.14, please pull the following:
 
 - Eric moves the bcm2837 DT file from arm64 to arm because it created a maintenance
   problem and would have required either duplication or cross merges
 
 - Stefan changes how the pinmuxing is defined and pushes it at the board level
   to support Raspberry Pi Zero Wireless. He then adds supports for the actual
   Raspberry Pi Zero Wireless board along with binding documentation. Stefan
   also defines a proper SMP enable-method property and binding for BCM2836
   (Raspbery Pi 2)
 
 - Rafal describes the BCM5301X USB ports correctly in Device Tree such that
   it becomes possible to assign them to specific LED triggers (e.g: USB activity).
   He does the same thing for BCM53573 and defines default LED triggers for USB.
 
 - Jon provides a fix for Northstar Plus which consists in correctly defining
   the "dma-coherent" property for peripherals which are DMA coherent. He also
   does a bit of re-arrangement of the USB DT nodes and finally adds USB 3 PHY
   and host controller support for NorthStar Plus
 
 - Florian adds support for Broadcom's BCM947189ACDBMR reference board which is
   based on BCM47182/53573 and which supports external MoCA (BCM6802)
 
 - Ray fixes the wrong UART2 base address for Cygnus
 
 - Scott moves the v3d node in the proper unit address order and defines the correct
   UART alias for the BCM91130_entphn reference board to be UART3
 
 - Jason adds the DT node for the Cygnus Cortex-A9 Performance Monitoring Unit
 
 - Jonathan adds a bunch of additional peripherals to the Cygnus DTS include file:
   SDHCI, Keypad, SPI, DMA and pinmux configurations
 
 - Raveendra adds the Cygnus OHCI and EHCI Device Tree nodes
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Merge tag 'arm-soc/for-4.14/devicetree' of http://github.com/Broadcom/stblinux into next/dt

Pull "Broadcom devicetree changes for 4.14" from Florian Fainelli:

This pull request contains Broadcom ARM-based SoCs Device Tree changes for
4.14, please pull the following:

- Eric moves the bcm2837 DT file from arm64 to arm because it created a maintenance
  problem and would have required either duplication or cross merges

- Stefan changes how the pinmuxing is defined and pushes it at the board level
  to support Raspberry Pi Zero Wireless. He then adds supports for the actual
  Raspberry Pi Zero Wireless board along with binding documentation. Stefan
  also defines a proper SMP enable-method property and binding for BCM2836
  (Raspbery Pi 2)

- Rafal describes the BCM5301X USB ports correctly in Device Tree such that
  it becomes possible to assign them to specific LED triggers (e.g: USB activity).
  He does the same thing for BCM53573 and defines default LED triggers for USB.

- Jon provides a fix for Northstar Plus which consists in correctly defining
  the "dma-coherent" property for peripherals which are DMA coherent. He also
  does a bit of re-arrangement of the USB DT nodes and finally adds USB 3 PHY
  and host controller support for NorthStar Plus

- Florian adds support for Broadcom's BCM947189ACDBMR reference board which is
  based on BCM47182/53573 and which supports external MoCA (BCM6802)

- Ray fixes the wrong UART2 base address for Cygnus

- Scott moves the v3d node in the proper unit address order and defines the correct
  UART alias for the BCM91130_entphn reference board to be UART3

- Jason adds the DT node for the Cygnus Cortex-A9 Performance Monitoring Unit

- Jonathan adds a bunch of additional peripherals to the Cygnus DTS include file:
  SDHCI, Keypad, SPI, DMA and pinmux configurations

- Raveendra adds the Cygnus OHCI and EHCI Device Tree nodes

* tag 'arm-soc/for-4.14/devicetree' of http://github.com/Broadcom/stblinux:
  ARM: BCM53573: Specify ports for USB LED for Tenda AC9
  ARM: dts: cygnus: Add generic-ehci/ohci nodes
  ARM: dts: cygnus: add serial0 alias for uart3 on bcm91130_entphn
  ARM: dts: cygnus: Add additional peripherals to dtsi
  ARM: dts: cygnus: Enable Performance Monitoring Unit
  ARM: dts: cygnus: place v3d in proper address ordered location
  ARM: dts: cygnus: Fix incorrect UART2 register base
  ARM: dts: bcm283x: Add 32-bit enable method for SMP
  dt-bindings: arm: add SMP enable-method for BCM2836
  ARM: dts: BCM53573: Add Broadcom BCM947189ACDBMR board support
  ARM: dts: BCM5301X: Specify USB ports for USB LEDs of few devices
  ARM: dts: NSP: Add USB3 and USB3 PHY to NSP
  ARM: dts: NSP: Rearrage USB entries
  ARM: dts: NSP: Add dma-coherent to relevant DT entries
  ARM: dts: bcm2835: Add Raspberry Pi Zero W
  dt-bindings: bcm: Add Raspberry Pi Zero W
  ARM: bcm283x: Define UART pinmuxing on board level
  ARM: dts: BCM5301X: Specify USB ports for each controller
  ARM: dts: bcm283x: Move the BCM2837 DT contents from arm64 to arm.
2017-08-18 22:57:43 +02:00
Abhishek Sahu dc6159fd04 arm64: defconfig: Enable QCOM IPQ8074 clock and pinctrl
These configs are required for booting kernel in QCOM
IPQ8074 boards.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-18 15:48:50 -05:00
Arnd Bergmann d4a3168095 ZTE arm64 device tree updates for 4.14:
- A clean up patch from Shawn Lin to remove the deprecated dwmmc
    property 'num-slots' from ZX296718 device tree.
  - Enable various devices for ZX296718 SoC support, VGA display, I2S
    audio, pinctrl, GPIO, PWM and IRDEC.
  - Update zx296718-evb support to use audio-graph-card for HDMI audio
    and add I2S sound card.
  - Add initial zx296718-pcbox board support with storage, audio,
    display devices enabled.
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Merge tag 'zte-dt64-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/dt64

Pull "ZTE arm64 device tree updates for 4.14" from Shawn Guo:

 - A clean up patch from Shawn Lin to remove the deprecated dwmmc
   property 'num-slots' from ZX296718 device tree.
 - Enable various devices for ZX296718 SoC support, VGA display, I2S
   audio, pinctrl, GPIO, PWM and IRDEC.
 - Update zx296718-evb support to use audio-graph-card for HDMI audio
   and add I2S sound card.
 - Add initial zx296718-pcbox board support with storage, audio,
   display devices enabled.

* tag 'zte-dt64-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  arm64: dts: zte: add initial zx296718-pcbox board support
  arm64: dts: zx296718-evb: add I2S sound card support
  arm64: dts: zx296718-evb: use audio-graph-card for HDMI audio
  arm64: dts: zx296718: add irdec device for remote control
  arm64: dts: zx296718: add PWM device support
  arm64: dts: zx296718: add voltage data into OPP table
  arm64: dts: zx296718: set a better parent clock for I2S0
  arm64: dts: zx296718: add pinctrl and gpio devices
  arm64: dts: zx296718: add I2S and I2C audio codec
  arm64: dts: zx296718: add VGA device support
  arm64: dts: zte: remove num-slots from zx296718
2017-08-18 22:47:35 +02:00
Arnd Bergmann bda8f04da8 Freescale arm64 device tree updates for 4.14:
- Correct the typo in fsl-ls1088a-rdb board name.
  - A series from Horia Geantă to consolidate aliases node and enable
    crypto support for ls208xa and ls1088a.
  - Enable USB host support for ls1012a.
  - Enable cpuidle support for ls1088a and ls208xa.
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Merge tag 'imx-dt64-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/dt64

Pull "Freescale arm64 device tree updates for 4.14" from Shawn Guo:
 - Correct the typo in fsl-ls1088a-rdb board name.
 - A series from Horia Geantă to consolidate aliases node and enable
   crypto support for ls208xa and ls1088a.
 - Enable USB host support for ls1012a.
 - Enable cpuidle support for ls1088a and ls208xa.

* tag 'imx-dt64-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  arm64: dts: ls1088: Correction in Board name from "L1088A" to "LS1088A"
  arm64: dts: ls208xa: add cpu idle support
  arm64: dts: ls1088a: add cpu idle support
  arm64: dts: freescale: ls1088a: add crypto node
  arm64: dts: freescale: ls208xa: add crypto node
  arm64: dts: freescale: ls208xa: share aliases node
  arm64: dts: ls1012a: add USB host controller nodes
2017-08-18 22:45:30 +02:00
Arnd Bergmann 3004a512ed This pull request contains Broadcom ARM64-based SoCs Device Tree changes for
4.14, please pull the following:
 
 - Scott moves all the Northstar 2 DTS files into a sub-directory to be consistent
   with what was done for stingray and to future proof the addition of new board
   DTS files
 
 - Velibor adds the ARM CCN-502 interconnect DT node to the Stingray SoC
   DTS include file
 
 - Srinath adds the MDIO multiplexer and SATA nodes to the Stingray DTS
   include files
 
 - Anup adds the SP804 timers, FlexRM (mailbox) and RAID engine DT nodes
   to the Stingray DTS include files
 
 - Abishek adds the BGMAC (Ethernet controller) node to the Stingray DTS
   files
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Merge tag 'arm-soc/for-4.14/devicetree-arm64' of http://github.com/Broadcom/stblinux into next/dt64

Pull "Broadcom devicetree-arm64 changes for 4.14" from Florian Fainelli:

This pull request contains Broadcom ARM64-based SoCs Device Tree changes for
4.14, please pull the following:

- Scott moves all the Northstar 2 DTS files into a sub-directory to be consistent
  with what was done for stingray and to future proof the addition of new board
  DTS files

- Velibor adds the ARM CCN-502 interconnect DT node to the Stingray SoC
  DTS include file

- Srinath adds the MDIO multiplexer and SATA nodes to the Stingray DTS
  include files

- Anup adds the SP804 timers, FlexRM (mailbox) and RAID engine DT nodes
  to the Stingray DTS include files

- Abishek adds the BGMAC (Ethernet controller) node to the Stingray DTS
  files

* tag 'arm-soc/for-4.14/devicetree-arm64' of http://github.com/Broadcom/stblinux:
  arm64: dts: Add SBA-RAID DT nodes for Stingray SoC
  arm64: dts: Add FlexRM DT nodes for Stingray
  arm64: dts: Add SATA DT nodes for Stingray SoC
  arm64: dts: Add DT node to enable BGMAC driver on Stingray
  arm64: dts: Add sp804 DT nodes for Stingray SoC
  arm64: dts: Add MDIO multiplexer DT node for Stingray
  arm64: dts: Enable stats for CCN-502 interconnect on Stingray
  arm64: dts: move ns2 into northstar2 directory
2017-08-18 22:43:51 +02:00
Arnd Bergmann 36d0f13881 - add SoC mt7622 and its reference board
- cleanup of dts bindings
 - mt6797: add watchdog and delete unused clock
 - add support for SoC mt2701 and it's eval board
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Merge tag 'v4.13-next-dts64' of https://github.com/mbgg/linux-mediatek into next/dt64

Pull "arm: mediatek: dts64 updates for v4.14" from Matthias Brugger:

- add SoC mt7622 and its reference board
- cleanup of dts bindings
- mt6797: add watchdog and delete unused clock
- add support for SoC mt2701 and it's eval board

* tag 'v4.13-next-dts64' of https://github.com/mbgg/linux-mediatek:
  arm64: dts: Add Mediatek SoC MT2712 and evaluation board dts and Makefile
  dt-bindings: arm: Add bindings for Mediatek MT2712 SoC Platform
  arm64: dts: mediatek: Delete unused dummy clock for MT6797
  arm64: dts: mediatek: add watchdog to MT6797
  ARM: mediatek: dts: Add MT6797 binding
  ARM: mediatek: dts: Cleanup bindings documentation
  arm64: dts: mt7622: add dts file for MT7622 reference board variant 1
  arm64: dts: mt7622: add basic nodes to the mt7622.dtsi file
2017-08-18 22:33:18 +02:00
Varadarajan Narayanan 41dac73e24 arm64: dts: Add ipq8074 SoC and HK01 board support
Add initial device tree support for the Qualcomm IPQ8074 SoC and
HK01 evaluation board.

Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Manoharan Vijaya Raghavan <mraghava@codeaurora.org>
Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-18 14:47:25 -05:00
Catalin Marinas a7ba38d680 Merge branch 'for-next/kernel-mode-neon' into for-next/core
* for-next/kernel-mode-neon:
  arm64: neon/efi: Make EFI fpsimd save/restore variables static
  arm64: neon: Forbid when irqs are disabled
  arm64: neon: Export kernel_neon_busy to loadable modules
  arm64: neon: Temporarily add a kernel_mode_begin_partial() definition
  arm64: neon: Remove support for nested or hardirq kernel-mode NEON
  arm64: neon: Allow EFI runtime services to use FPSIMD in irq context
  arm64: fpsimd: Consistently use __this_cpu_ ops where appropriate
  arm64: neon: Add missing header guard in <asm/neon.h>
  arm64: neon: replace generic definition of may_use_simd()
2017-08-18 18:32:50 +01:00
Catalin Marinas cda94408d7 Merge branch 'for-next/perf' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into for-next/core
* 'for-next/perf' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux:
  arm64: perf: add support for Cortex-A35
  arm64: perf: add support for Cortex-A73
  arm64: perf: Remove redundant entries from CPU-specific event maps
  arm64: perf: Connect additional events to pmu counters
  arm64: perf: Allow standard PMUv3 events to be extended by the CPU type
  perf: xgene: Remove unnecessary managed resources cleanup
  arm64: perf: Allow more than one cycle counter to be used
2017-08-18 18:30:30 +01:00
Dave Martin 3b66023d57 arm64: neon/efi: Make EFI fpsimd save/restore variables static
The percpu variables efi_fpsimd_state and efi_fpsimd_state_used,
used by the FPSIMD save/restore routines for EFI calls, are
unintentionally global.

There's no reason for anything outside fpsimd.c to touch these, so
this patch makes them static (as they should have been in the first
place).

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-18 18:29:10 +01:00
Arnd Bergmann 552c497c40 Allwinner fixes for 4.13, round 2
Three fixes adding a missing alias for the Ethernet controller on A64
 boards. One adding a missing interrupt for the pin controller.
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Merge tag 'sunxi-fixes-for-4.13-2' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into fixes

Pull "Allwinner fixes for 4.13, round 2" from Chen-Yu Tsai:

Three fixes adding a missing alias for the Ethernet controller on A64
boards. One adding a missing interrupt for the pin controller.

* tag 'sunxi-fixes-for-4.13-2' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  arm64: allwinner: h5: fix pinctrl IRQs
  arm64: allwinner: a64: sopine: add missing ethernet0 alias
  arm64: allwinner: a64: pine64: add missing ethernet0 alias
  arm64: allwinner: a64: bananapi-m64: add missing ethernet0 alias
2017-08-18 11:55:44 +02:00
William Wu 1d5bcbbd98 arm64: dts: rockchip: disable tx ipgap linecheck for rk3399 dwc3
RK3399 USB DWC3 controller has a issue that FS/LS devices not
recognized if inserted through USB 3.0 HUB. It's because that
the inter-packet delay between the SSPLIT token to SETUP token
is about 566ns, more then the USB spec requirement.

This patch adds a quirk "snps,dis-tx-ipgap-linecheck-quirk" to
disable the u2mac linestate check to decrease the SSPLIT token
to SETUP token inter-packet delay from 566ns to 466ns.

Signed-off-by: William Wu <william.wu@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2017-08-18 11:16:55 +02:00
Paul E. McKenney 656e7c0c0a Merge branches 'doc.2017.08.17a', 'fixes.2017.08.17a', 'hotplug.2017.07.25b', 'misc.2017.08.17a', 'spin_unlock_wait_no.2017.08.17a', 'srcu.2017.07.27c' and 'torture.2017.07.24c' into HEAD
doc.2017.08.17a: Documentation updates.
fixes.2017.08.17a: RCU fixes.
hotplug.2017.07.25b: CPU-hotplug updates.
misc.2017.08.17a: Miscellaneous fixes outside of RCU (give or take conflicts).
spin_unlock_wait_no.2017.08.17a: Remove spin_unlock_wait().
srcu.2017.07.27c: SRCU updates.
torture.2017.07.24c: Torture-test updates.
2017-08-17 08:10:04 -07:00
Paul E. McKenney 952111d7db arch: Remove spin_unlock_wait() arch-specific definitions
There is no agreed-upon definition of spin_unlock_wait()'s semantics,
and it appears that all callers could do just as well with a lock/unlock
pair.  This commit therefore removes the underlying arch-specific
arch_spin_unlock_wait() for all architectures providing them.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: <linux-arch@vger.kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Andrea Parri <parri.andrea@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Boqun Feng <boqun.feng@gmail.com>
2017-08-17 08:08:59 -07:00
Mathieu Desnoyers 22e4ebb975 membarrier: Provide expedited private command
Implement MEMBARRIER_CMD_PRIVATE_EXPEDITED with IPIs using cpumask built
from all runqueues for which current thread's mm is the same as the
thread calling sys_membarrier. It executes faster than the non-expedited
variant (no blocking). It also works on NOHZ_FULL configurations.

Scheduler-wise, it requires a memory barrier before and after context
switching between processes (which have different mm). The memory
barrier before context switch is already present. For the barrier after
context switch:

* Our TSO archs can do RELEASE without being a full barrier. Look at
  x86 spin_unlock() being a regular STORE for example.  But for those
  archs, all atomics imply smp_mb and all of them have atomic ops in
  switch_mm() for mm_cpumask(), and on x86 the CR3 load acts as a full
  barrier.

* From all weakly ordered machines, only ARM64 and PPC can do RELEASE,
  the rest does indeed do smp_mb(), so there the spin_unlock() is a full
  barrier and we're good.

* ARM64 has a very heavy barrier in switch_to(), which suffices.

* PPC just removed its barrier from switch_to(), but appears to be
  talking about adding something to switch_mm(). So add a
  smp_mb__after_unlock_lock() for now, until this is settled on the PPC
  side.

Changes since v3:
- Properly document the memory barriers provided by each architecture.

Changes since v2:
- Address comments from Peter Zijlstra,
- Add smp_mb__after_unlock_lock() after finish_lock_switch() in
  finish_task_switch() to add the memory barrier we need after storing
  to rq->curr. This is much simpler than the previous approach relying
  on atomic_dec_and_test() in mmdrop(), which actually added a memory
  barrier in the common case of switching between userspace processes.
- Return -EINVAL when MEMBARRIER_CMD_SHARED is used on a nohz_full
  kernel, rather than having the whole membarrier system call returning
  -ENOSYS. Indeed, CMD_PRIVATE_EXPEDITED is compatible with nohz_full.
  Adapt the CMD_QUERY mask accordingly.

Changes since v1:
- move membarrier code under kernel/sched/ because it uses the
  scheduler runqueue,
- only add the barrier when we switch from a kernel thread. The case
  where we switch from a user-space thread is already handled by
  the atomic_dec_and_test() in mmdrop().
- add a comment to mmdrop() documenting the requirement on the implicit
  memory barrier.

CC: Peter Zijlstra <peterz@infradead.org>
CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
CC: Boqun Feng <boqun.feng@gmail.com>
CC: Andrew Hunter <ahh@google.com>
CC: Maged Michael <maged.michael@gmail.com>
CC: gromer@google.com
CC: Avi Kivity <avi@scylladb.com>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: Paul Mackerras <paulus@samba.org>
CC: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Dave Watson <davejwatson@fb.com>
2017-08-17 07:28:05 -07:00
yt.shen@mediatek.com bdf2cbb2b3 arm64: dts: Add Mediatek SoC MT2712 and evaluation board dts and Makefile
This adds basic chip support for Mediatek 2712

Signed-off-by: YT Shen <yt.shen@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
2017-08-17 15:33:45 +02:00
Matthias Brugger 6ebbe61d90 arm64: dts: mediatek: Delete unused dummy clock for MT6797
After adding the clock subsystem to the SOC, the dummy
clock clk32k is not longer needed. Delete it.

Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
2017-08-17 15:33:44 +02:00
Matthias Brugger 6717728cac arm64: dts: mediatek: add watchdog to MT6797
This patch adds the watchdog driver to the MT6797 SoC.

Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
2017-08-17 15:33:43 +02:00
Arnd Bergmann 395cd0e66e Amlogic 64-bit DT updates for v4.14
- add GPIO line names to a few boards
 - MMC regulator settle time updates
 - misc cleanups/fixups
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Merge tag 'amlogic-dt64' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic into next/dt64

Pull "Amlogic 64-bit DT updates for v4.14" from Kevin Hilman:

- add GPIO line names to a few boards
- MMC regulator settle time updates
- misc cleanups/fixups

* tag 'amlogic-dt64' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
  ARM64: dts: meson-gx: use stable UART bindings with correct gate clock
  ARM64: dts: meson-gxbb-nanopi-k2: Add GPIO lines names
  ARM64: dts: meson-gxl-khadas-vim: Add GPIO lines names
  ARM64: dts: meson-gxbb: p20x: add card regulator settle times
  dt-bindings: amlogic: add unstable statement
  ARM64: dts: meson-gx: Add SoC info register
  ARM64: dts: meson-gx: consistently use the GIC_SPI and IRQ type macros
2017-08-17 11:06:39 +02:00
Yoshihiro Shimoda 1fa0b494f6 arm64: dts: r8a77995: add pfc device node
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-08-17 11:03:44 +02:00
Yoshihiro Shimoda b953585377 arm64: dts: r8a7796: Add HSUSB device node
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-08-17 11:03:42 +02:00
Yoshihiro Shimoda 834bda65b7 arm64: dts: r8a7796: Add USB-DMAC device nodes
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-08-17 11:03:41 +02:00
Yoshihiro Shimoda 7b39ccbb4b arm64: dts: r8a7796: Add USB3.0 host device node
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-08-17 11:03:40 +02:00
Yoshihiro Shimoda 3e95050a3d arm64: dts: r8a7796: add USB2.0 Host (EHCI/OHCI) device nodes
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-08-17 11:03:39 +02:00
Yoshihiro Shimoda bf68012373 arm64: dts: r8a7796: add usb2_phy device nodes
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-08-17 11:03:38 +02:00
Simon Horman c3a937bbdd arm64: dts: r8a7795: correct whitespace of companion property
Fixes: 4dad6dcdae ("arm64: dts: renesas: r8a7795: add usb2.0 host ch3 device nodes")
Fixes: 1c422b4c50 ("arm64: dts: renesas: r8a7795: Add usb companion property in EHCI")
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-08-17 11:03:34 +02:00
Simon Horman 41f148f63b arm64: dts: r8a7795: Use R-Car SATA Gen3 fallback compat string
Use newly added R-Car SATA Gen3 fallback compat string
in the DT of the r8a7795 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before the fallback compat string is considered.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
2017-08-17 11:03:33 +02:00
Laurent Pinchart 111c074476 arm64: dts: salvator-common: Remove extra LVDS port label
The DU LVDS output is on port 3 on R8A7795 but on port 2 on R8A7796. The
lvds_connector label thus can't be defined in salvator-common.dtsi,
common to the two SoCs.

The lvds_connector label is meant for convenience to be referenced from
panel device tree files, such as r8a77xx-aa104xd12-panel.dtsi or
r8a77xx-aa121td01-panel.dtsi.  As those files are not included in any
device tree source, and the label never used elsewhere, we can simply
remove it. Out-of-tree patches that include panel device tree files can
then add a

	#define lvds_connector du_out_lvds0

before including the panel device tree file.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-08-17 11:03:26 +02:00
Arnd Bergmann 872784bffb Fourth Round of Renesas ARM Based SoC Fixes for v4.13
* Avoid audio_clkout naming conflict for salvator boards using
   Renesas R-Car Gen 3 SoCs
 
   Morimoto-san says "The clock name of "audio_clkout" is used by the
   Renesas sound driver.  This duplicated naming breaks its clock
   registering/unregistering.  Especially when unbind/bind it can't handle
   clkout correctly.  This patch renames "audio_clkout" to "audio-clkout" to
   avoid the naming conflict."
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Merge tag 'renesas-fixes4-for-v4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes

Pull "Fourth Round of Renesas ARM Based SoC Fixes for v4.13" from Simon Horman:

* Avoid audio_clkout naming conflict for salvator boards using
  Renesas R-Car Gen 3 SoCs

  Morimoto-san says "The clock name of "audio_clkout" is used by the
  Renesas sound driver.  This duplicated naming breaks its clock
  registering/unregistering.  Especially when unbind/bind it can't handle
  clkout correctly.  This patch renames "audio_clkout" to "audio-clkout" to
  avoid the naming conflict."

* tag 'renesas-fixes4-for-v4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  arm64: renesas: salvator-common: avoid audio_clkout naming conflict
2017-08-17 11:00:26 +02:00
Arnd Bergmann 63b5e000a8 Qualcomm ARM64 Updates for v4.14
* Force USB host mode on APQ8016
 * Update coresight nodes on MSM8916
 * Add MSM8996 support for USB, PCIE phy, RPM/GLink, and modem SMP2P
 * Add db820c PM8994 regulator node
 * Add PMI8994 gpios
 * Add assorted MSM8916 nodes including GPU, IOMMU, Venus, and CEC clock.
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Merge tag 'qcom-arm64-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into next/dt64

Pull "Qualcomm ARM64 Updates for v4.14" from Andy Gross:

* Force USB host mode on APQ8016
* Update coresight nodes on MSM8916
* Add MSM8996 support for USB, PCIE phy, RPM/GLink, and modem SMP2P
* Add db820c PM8994 regulator node
* Add PMI8994 gpios
* Add assorted MSM8916 nodes including GPU, IOMMU, Venus, and CEC clock.

* tag 'qcom-arm64-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux:
  arm64: dts: qcom: msm8916: Add IOMMU support
  arm64: dts: qcom: msm8916: Add Venus video codec support
  arm64: dts: qcom: msm8916: Add gpu support
  arm64: dts: qcom: msm8996: Specify smd-edge for ADSP
  arm64: dts: msm8996: Add modem smp2p nodes
  arm64: dts: qcom: db820c: Add pm8994 regulator node
  arm64: dts: qcom: Add RPM glink nodes to msm8996
  arm64: dts: msm8996: Add device node for qcom,dwc3
  arm64: dts: msm8996: Add device node for qcom qmp-phy for pcie
  arm64: dts: msm8996: Add device node for qcom qmp-phy for usb
  arm64: dts: msm8996: Add device node for qcom qusb2 phy
  arm64: dts: qcom: add cec clock for apq8016 board
  arm64: dts: pmi8994: Add device node for pmi8994 gpios
  arm64: dts: qcom-msm8916: dts: Update coresight replicator
  arm64: dts: qcom: Force host mode for USB on apq8016-sbc
2017-08-16 23:52:00 +02:00
Arnd Bergmann dbc1c5fc15 ARM64: DT: Hisilicon SoC DT updates for 4.14
- Add PCIe node for hip07
 - Add acpu_sctrl node and refine the usb tx fifo size for hi6220
 - Add cpu idle states, L2 cache, PMU, OP-TEE, reboot, pstore,
   k3-dma and watchdog nodes for hi3660 and hikey960
 - Update mmc and bluetooth nodes for hi3660 and hikey960
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Merge tag 'hisi-arm64-dt-for-4.14-v2' of git://github.com/hisilicon/linux-hisi into next/dt64

Pull "ARM64: DT: Hisilicon SoC DT updates for 4.14" from Wei Xu:

- Add PCIe node for hip07
- Add acpu_sctrl node and refine the usb tx fifo size for hi6220
- Add cpu idle states, L2 cache, PMU, OP-TEE, reboot, pstore,
  k3-dma and watchdog nodes for hi3660 and hikey960
- Update mmc and bluetooth nodes for hi3660 and hikey960

* tag 'hisi-arm64-dt-for-4.14-v2' of git://github.com/hisilicon/linux-hisi:
  arm64: dts: hi3660: enable watchdog
  arm64: dts: hi3660: add bindings for DMA
  arm64: dts: hikey960: change bluetooth uart max-speed to 3mbps
  arm64: dts: hi3660: Reset the mmc hosts
  arm64: dts: hikey960: Add pstore support
  arm64: dts: hikey960: Add support for syscon-reboot-mode
  arm64: dts: hikey960: Add optee node
  arm64: dts: hi3660: add pmu dt node for hi3660
  arm64: dts: hi3660: add L2 cache topology
  arm64: dts: hi3660: enable idle states
  arm64: dts: hi6220: improve g-tx-fifo-size setting for usb device
  arm64: dts: hi6220: add acpu_sctrl
  arm64: dts: hisi: add PCIe host controller node for hip07 SoC
2017-08-16 23:50:44 +02:00
Arnd Bergmann 029fb7c2e3 UniPhier ARM64 SoC DT updates for v4.14
- add nodes for NAND, Watchdog
 - replace /include/ with #include
 - use #include <arm/...> instead of symlinks
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Merge tag 'uniphier-dt64-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-uniphier into next/dt64

Pull "UniPhier ARM64 SoC DT updates for v4.14" from Masahiro Yamada:

- add nodes for NAND, Watchdog
- replace /include/ with #include
- use #include <arm/...> instead of symlinks

* tag 'uniphier-dt64-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-uniphier:
  arm64: dts: uniphier: add Denali NAND controller nodes
  arm64: dts: uniphier: use cross-arch include instead of symlinks
  arm64: dts: uniphier: use #include instead of /include/
  arm64: dts: uniphier: add watchdog node for LD11 and LD20
2017-08-16 23:46:59 +02:00
Arnd Bergmann 23f8f601d2 ARMv8 Vexpress/Juno DT updates for v4.14
1. Replaces old coresight ATB programmable replicator compatible with
    new and more generic one
 
 2. Replaces incorrect usage of underscores for device node names in the
    device tree with hyphen
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Merge tag 'juno-updates-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into next/dt64

Pull "ARMv8 Vexpress/Juno DT updates for v4.14" from Sudeep Holla:

1. Replaces old coresight ATB programmable replicator compatible with
   new and more generic one

2. Replaces incorrect usage of underscores for device node names in the
   device tree with hyphen

* tag 'juno-updates-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  arm64: dts: juno: replace underscores with hyphen in device node names
  arm64: dts: juno: Use the new coresight replicator string
2017-08-16 23:43:49 +02:00
Arnd Bergmann 9bbf339030 Allwinner arm64 DT changes for 4.14
The usual improvement patches:
 
   - R_INTC interrupt controller enabled for the A64 SoC
 
   - AXP803 PMIC added and enabled on the Pine64 and SoPine boards
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Merge tag 'sunxi-dt64-for-4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into next/dt64

Pull "Allwinner arm64 DT changes for 4.14" from Chen-Yu Tsai:

The usual improvement patches:

  - R_INTC interrupt controller enabled for the A64 SoC

  - AXP803 PMIC added and enabled on the Pine64 and SoPine boards

* tag 'sunxi-dt64-for-4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  arm64: allwinner: a64: add AXP803 PMIC support to SoPine and the baseboard
  arm64: allwinner: a64: enable AXP803 regulators for Pine64
  arm64: allwinner: a64: add DTSI file for AXP803 PMIC
  arm64: allwinner: a64: add AXP803 node to Pine64 device tree
  arm64: allwinner: a64: add NMI (R_INTC) controller on A64
2017-08-16 23:42:28 +02:00
Arnd Bergmann 4fda1e7387 64bit Rockchip devicetree changes containing fixes for pinctrl typos
and the use of keep-power-in-suspend in non-sdio nodes as well as the
 removal of the deprecated num-slots property from dwmmc nodes.
 
 rk3328 gets support for spdif, io-domains and usb (including enablement
 of usb on the evaluation board), while rk3368 gains support for spdif.
 
 The biggest chunk of course aims for the rk3399 with a number of pcie
 changes, support for the mali gpu, a new power-domain, sdmmc support
 on the firefly board and dynamic-power-coefficients.
 
 The gru family also gets support for their quite central pwm regulators
 using the newly introduced vctrl regulator types.
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Merge tag 'v4.14-rockchip-dts64-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into next/dt64

Pull "Rockchip dts64 changes for 4.14" from Heiko Stübner:

64bit Rockchip devicetree changes containing fixes for pinctrl typos
and the use of keep-power-in-suspend in non-sdio nodes as well as the
removal of the deprecated num-slots property from dwmmc nodes.

rk3328 gets support for spdif, io-domains and usb (including enablement
of usb on the evaluation board), while rk3368 gains support for spdif.

The biggest chunk of course aims for the rk3399 with a number of pcie
changes, support for the mali gpu, a new power-domain, sdmmc support
on the firefly board and dynamic-power-coefficients.

The gru family also gets support for their quite central pwm regulators
using the newly introduced vctrl regulator types.

* tag 'v4.14-rockchip-dts64-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  arm64: dts: rockchip: update dynamic-power-coefficient for rk3399
  arm64: dts: rockchip: add rk3328 spdif node
  arm64: dts: rockchip: add rk3368 spdif node
  arm64: dts: rockchip: enable sdmmc controller on rk3399-firefly
  arm64: dts: rockchip: Add rk3328 io-domain node
  arm64: dts: rockchip: kill pcie_clkreqn and pcie_clkreqnb for rk3399
  arm64: dts: rockchip: change clkreq mode for rk3399-firefly
  arm64: dts: rockchip: enable the GPU for RK3399-GRU
  arm64: dts: rockchip: add ARM Mali GPU node for RK3399 SoCs
  dt-bindings: gpu: add the RK3399 mali for rockchip specifics
  arm64: dts: rockchip: remove abused keep-power-in-suspend
  arm64: dts: rockchip: remove num-slots from all platforms
  arm64: dts: rockchip: change clkreq mode for rk3399-evb
  arm64: dts: rockchip: add SdioAudio pd control for rk3399
  arm64: dts: rockchip: enable usb2 for RK3328 evaluation board
  arm64: dts: rockchip: add usb2 nodes for RK3328 SoCs
  arm64: dts: rockchip: set rk3399 dynamic CPU power coefficients
  arm64: dts: rockchip: Use vctrl regulators for dynamic CPU voltages on Gru/Kevin
  arm64: dts: rockchip: Update CPU regulator voltage ranges for Gru
  arm64: dts: rockchip: fix typo in mmc pinctrl
2017-08-16 23:41:03 +02:00
Arnd Bergmann 77dcb02f0d mvebu dt64 for 4.14 (part 1)
For Armada 37xx:
 - GIC improvement
 - Add PMUv3
 - Enable USB2 on EspressoBin
 
 For Armada 7K/8K:
 - add GPIO interrupts for CP110
 - add pinctrl nodes to describe the CPM I2C0 and CPS SPI1
 - re-order RTC nodes in Marvell CP110 description
 - on MacchiatoBin
     - fix USB3 regulator definition
     - add support for i2c mux
     - add support for PCIe
     - add an stdout-path
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Merge tag 'mvebu-dt64-4.14-1' of git://git.infradead.org/linux-mvebu into next/dt64

Pull "mvebu dt64 for 4.14 (part 1)" from Gregory CLEMENT:

For Armada 37xx:
- GIC improvement
- Add PMUv3
- Enable USB2 on EspressoBin

For Armada 7K/8K:
- add GPIO interrupts for CP110
- add pinctrl nodes to describe the CPM I2C0 and CPS SPI1
- re-order RTC nodes in Marvell CP110 description
- on MacchiatoBin
    - fix USB3 regulator definition
    - add support for i2c mux
    - add support for PCIe
    - add an stdout-path

* tag 'mvebu-dt64-4.14-1' of git://git.infradead.org/linux-mvebu:
  arm64: dts: marvell: re-order RTC nodes in Marvell CP110 description
  arm64: dts: marvell: mcbin: add an stdout-path
  arm64: dts: marvell: mcbin: add support for PCIe
  arm64: dts: marvell: mcbin: add support for i2c mux
  arm64: dts: marvell: fix USB3 regulator definition on MacchiatoBin
  arm64: dts: marvell: mcbin: add pinctrl nodes
  arm64: dts: marvell: cp110: add GPIO interrupts
  ARM64: dts: marvell: armada-37xx: Enable USB2 on espressobin
  ARM64: dts: marvell: armada-37xx: Wire PMUv3
  ARM64: dts: marvell: armada-37xx: Enable memory-mapped GIC CPU interface
  ARM64: dts: marvell: armada-37xx: Fix GIC maintenance interrupt
2017-08-16 23:39:19 +02:00
Arnd Bergmann 6421d89fab Renesas ARM64 Based SoC DT Updates for v4.14
* Add usb2.0 for R-Car H3 (r8a7795) ES2.0 SoC
 
 * Add R-Car D3 (r8a77995) SoC and Draak board support
 
   Adds minimal support for the R-Car D3 SoC and the Draak development
   board, allowing to boot from a ramdisk using a serial console.
 
 * Add Add VC6 clock generator to R-Car H3 (r8a7795)/Salvator-XS board
 
   The VC6 is an I2C-controlled programmable clock generator, used on the
   board to provide a display dot clock. Add it to DT.
 
 * Add missing second pair of DMA names to MSIOF nodes to
   R-Car M3-W (r8a7796) SoC
 
   MSIOF0 and MSIOF1 are tied to two DMA controllers through two pairs of
   DMA specifiers.  However, the second pair of corresponding DMA names was
   missing.
 
 * Add support for the DU to R-Car H3 (r8a7795) SoC
 
   Add a compatible string and VSP links to the DU node. The H3 ES1.x and H3
   ES2.0 are compatible save for the links to the VSPs that are described
   explicitly in DT, so there's no need for a new ES2-specific compatible
   string.
 
 * Enable HDMI on R-Car H3 (r8a7795) and M3-W (r8a7796) ULCB boards
 
 * Enable DU on R-Car M3-W (r8a7796) Salvator-X board
 
 * Enable I2C for DVFS on R-Car H3 (r8a7795) and M3-W (r8a7796) ULCB boards
 
 * Add Add DRIF support to R-Car H3 (r8a7795) and M3-W (r8a7796) SoCs
 
   Ramesh Shanmugasundaram says, "R-Car Gen3 DRIF is a SPI like receive only
   slave device."
 
 * Move CPG_AUDIO_CLK_I from board to soc files
 
   Geert Uytterhoeven says, "The definition of CPG_AUDIO_CLK_I is
   SoC-specific, not board-specific."
 
 * Add IMR-LX4 support to R-Car H3 (r8a7795) and M3-W (r8a7796) SoCs
 
   Sergei Shtylyov says, "The image renderer light extended 4 (IMR-LX4) or
   the distortion correction engine is a drawing processor with a simple
   instruction system capable of referencing data on an external memory as
   2D texture data and performing texture mapping and drawing with respect
   to any shape that is split into triangular objects."
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Merge tag 'renesas-arm64-dt-for-v4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/dt64

Pull "Renesas ARM64 Based SoC DT Updates for v4.14" from Simon Horman:

* Add usb2.0 for R-Car H3 (r8a7795) ES2.0 SoC

* Add R-Car D3 (r8a77995) SoC and Draak board support

  Adds minimal support for the R-Car D3 SoC and the Draak development
  board, allowing to boot from a ramdisk using a serial console.

* Add Add VC6 clock generator to R-Car H3 (r8a7795)/Salvator-XS board

  The VC6 is an I2C-controlled programmable clock generator, used on the
  board to provide a display dot clock. Add it to DT.

* Add missing second pair of DMA names to MSIOF nodes to
  R-Car M3-W (r8a7796) SoC

  MSIOF0 and MSIOF1 are tied to two DMA controllers through two pairs of
  DMA specifiers.  However, the second pair of corresponding DMA names was
  missing.

* Add support for the DU to R-Car H3 (r8a7795) SoC

  Add a compatible string and VSP links to the DU node. The H3 ES1.x and H3
  ES2.0 are compatible save for the links to the VSPs that are described
  explicitly in DT, so there's no need for a new ES2-specific compatible
  string.

* Enable HDMI on R-Car H3 (r8a7795) and M3-W (r8a7796) ULCB boards

* Enable DU on R-Car M3-W (r8a7796) Salvator-X board

* Enable I2C for DVFS on R-Car H3 (r8a7795) and M3-W (r8a7796) ULCB boards

* Add Add DRIF support to R-Car H3 (r8a7795) and M3-W (r8a7796) SoCs

  Ramesh Shanmugasundaram says, "R-Car Gen3 DRIF is a SPI like receive only
  slave device."

* Move CPG_AUDIO_CLK_I from board to soc files

  Geert Uytterhoeven says, "The definition of CPG_AUDIO_CLK_I is
  SoC-specific, not board-specific."

* Add IMR-LX4 support to R-Car H3 (r8a7795) and M3-W (r8a7796) SoCs

  Sergei Shtylyov says, "The image renderer light extended 4 (IMR-LX4) or
  the distortion correction engine is a drawing processor with a simple
  instruction system capable of referencing data on an external memory as
  2D texture data and performing texture mapping and drawing with respect
  to any shape that is split into triangular objects."

* tag 'renesas-arm64-dt-for-v4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: (31 commits)
  arm64: dts: renesas: r8a7795: add hsusb ch3 device node
  arm64: dts: renesas: r8a7795: add usb-dmac ch2 and ch3 device nodes
  arm64: dts: renesas: r8a7795: add usb2.0 host ch3 device nodes
  arm64: dts: renesas: r8a7795: add usb2_phy ch3 device node
  arm64: dts: renesas: r8a7795: Add usb companion property in EHCI
  arm64: dts: renesas: Add Renesas Draak board support
  arm64: dts: renesas: Add Renesas R8A77995 SoC support
  arm64: renesas: Add Renesas R8A77995 Kconfig support
  arm64: dts: r8a7795: salvator-xs: Connect DU dot clocks 0 and 3
  arm64: dts: salvator-xs: Add VC6 clock generator
  arm64: dts: r8a7796: Add missing second pair of DMA names to MSIOF nodes
  arm64: dts: r8a7795: Add all MSIOF nodes
  arm64: dts: r8a7795: Add support for the DU
  arm64: dts: ulcb: Enable HDMI output
  arm64: dts: ulcb: Add HDMI output connector
  arm64: dts: r8a7796: m3ulcb: Add DU external dot clocks
  arm64: dts: r8a7795: h3ulcb: Add DU external dot clocks
  arm64: dts: ulcb: Add DU external dot clock sources
  arm64: dts: r8a7796: salvator-x: Enable HDMI output
  arm64: dts: r8a7796: salvator-x: Add DU external dot clocks
  ...
2017-08-16 23:37:28 +02:00
Arnd Bergmann 34a39ff1db Samsung DTS ARM64 changes for v4.14
1. Remove deprecated and unneeded properties from Exynos boards.
 2. Implement proper (working) support for USB On-The-Go on Exynos5433
    TM2/TM2E boards.
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Merge tag 'samsung-dt64-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/dt64

Pull "Samsung DTS ARM64 changes for v4.14" from Krzysztof Kozłowski:

1. Remove deprecated and unneeded properties from Exynos boards.
2. Implement proper (working) support for USB On-The-Go on Exynos5433
   TM2/TM2E boards.

* tag 'samsung-dt64-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
  arm64: dts: exynos: Remove num-slots from exynos platforms
  arm64: dts: exynos: Add extcon property for TM2 and TM2E
  arm64: dts: exynos: Fix wrong label for USB 3.0 controller node
  arm64: dts: exynos: Remove the OF graph from DSI node
2017-08-16 23:36:22 +02:00
Rob Clark 6a6729f384 arm64: dts: qcom: msm8916: Add IOMMU support
This patch adds the IOMMU node for the IOMMU that resides on the
Qualcomm MSM8916 platforms.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-16 10:09:03 -05:00
Stanimir Varbanov 16bd6c8205 arm64: dts: qcom: msm8916: Add Venus video codec support
This patch adds the Qualcomm Venus video codec node for the video
codec hardware residing on MSM8916 platforms.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-16 10:08:55 -05:00
Leo Yan 487f00d4b9 arm64: dts: hi3660: enable watchdog
This patch is to add watchdog binding for Hi3660 on Hikey960 board.

Cc: Guodong Xu <guodong.xu@linaro.org>
Cc: Zhong Kaihua <zhongkaihua@huawei.com>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-16 09:32:12 +01:00
Wang Ruyi 0b507e91de arm64: dts: hi3660: add bindings for DMA
Add bindings for DMA.

Signed-off-by: Wang Ruyi <wangruyi@huawei.com>
Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-16 09:32:11 +01:00
Guodong Xu bf1ff5328a arm64: dts: hikey960: change bluetooth uart max-speed to 3mbps
Update bluetooth UART max-speed to 3Mbps

Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-16 09:32:11 +01:00
Guodong Xu 996707d765 arm64: dts: hi3660: Reset the mmc hosts
Add reset-names = "reset" into mmc nodes.

Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-16 09:32:10 +01:00
Guodong Xu 9c24dc9d00 arm64: dts: hikey960: Add pstore support
This patch reserves some memory in the DTS and sets up a
pstore device tree node to enable pstore support on HiKey960.

Cc: John Stultz <john.stultz@linaro.org>
Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-16 09:32:09 +01:00
Guodong Xu b6b681c144 arm64: dts: hikey960: Add support for syscon-reboot-mode
Add support to hikey960 dts for the syscon-reboot-mode driver.

Cc: John Stultz <john.stultz@linaro.org>
Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-16 09:32:09 +01:00
Victor Chong 313aebda84 arm64: dts: hikey960: Add optee node
This patch adds op-tee node for hikey960

Signed-off-by: Victor Chong <victor.chong@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-16 09:32:08 +01:00
YiPing Xu f8054fb8a7 arm64: dts: hi3660: add pmu dt node for hi3660
Add pmu dt node for hi3660

Signed-off-by: YiPing Xu <xuyiping@hisilicon.com>
Signed-off-by: Zhong Kaihua <zhongkaihua@huawei.com>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Jumana Mundichipparakkal <jumana.mp@arm.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-16 09:32:07 +01:00
Leo Yan a6d083441c arm64: dts: hi3660: add L2 cache topology
This patch adds the L2 cache topology on 96boards Hikey960.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-16 09:32:06 +01:00
Leo Yan 30fec8268c arm64: dts: hi3660: enable idle states
There are two clusters on the Hi3660, the first one is Cortex-A53 based
and the other one is Cortex-A73 based. These two clusters have different
idle states.

Thanks to Daniel Lezcano's recent changes, the generic ARM cpuidle
driver can now support several clusters with different idle states, thus
supporting the big.Little architecture.

In addition to the WFI idle state which is the default shallowest state
for all ARM cpus, the Hi3660 supports the following states:

 - CA53 CPUs:
        - CPU_SLEEP:       CPU power off state
        - CLUSTER_SLEEP_0: Cluster power off state

 - CA73 CPUs:
        - CPU_NAP:         CPU retention state
        - CPU_SLEEP:       CPU power off state
        - CLUSTER_SLEEP_1: Cluster power off state

This patch adds the idle states description for the Hi3660 to the device
tree.

Cc: Kevin Wang <jean.wangtao@linaro.org>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-16 09:32:06 +01:00
Shawn Guo 341b26b719 arm64: dts: hi6220: improve g-tx-fifo-size setting for usb device
The current usb device g-tx-fifo-size setting in DT causes two problems
for kernel driver.

1. On hi6220, there are 15 tx_fifo dedicated for all EPs except EP0,
   while DT only provides tx_fifo settings for 6 EPs.  It results in the
   following annoying complaints from kernel.

[    4.451623] dwc2 f72c0000.usb: dwc2_check_param_tx_fifo_sizes: Invalid parameter g_tx_fifo_size[7]=0
[    4.461303] dwc2 f72c0000.usb: dwc2_check_param_tx_fifo_sizes: Invalid parameter g_tx_fifo_size[8]=0
[    4.470969] dwc2 f72c0000.usb: dwc2_check_param_tx_fifo_sizes: Invalid parameter g_tx_fifo_size[9]=0
[    4.480632] dwc2 f72c0000.usb: dwc2_check_param_tx_fifo_sizes: Invalid parameter g_tx_fifo_size[10]=0
[    4.490385] dwc2 f72c0000.usb: dwc2_check_param_tx_fifo_sizes: Invalid parameter g_tx_fifo_size[11]=0
[    4.500140] dwc2 f72c0000.usb: dwc2_check_param_tx_fifo_sizes: Invalid parameter g_tx_fifo_size[12]=0
[    4.509892] dwc2 f72c0000.usb: dwc2_check_param_tx_fifo_sizes: Invalid parameter g_tx_fifo_size[13]=0
[    4.519646] dwc2 f72c0000.usb: dwc2_check_param_tx_fifo_sizes: Invalid parameter g_tx_fifo_size[14]=0
[    4.529399] dwc2 f72c0000.usb: dwc2_check_param_tx_fifo_sizes: Invalid parameter g_tx_fifo_size[15]=0
[    4.539244] dwc2 f72c0000.usb: EPs: 16, dedicated fifos, 1920 entries in SPRAM

   Besides of that, the total 1920 fifo entries isn't fully utilized.
   Endpoint Info Control block consumes 128 entries, g-rx-fifo-size
   is 512, and g-np-tx-fifo-size is 128.  So the fifi entries available
   for tx_fifo is: 1920 - 128 - 512 - 128 = 1152.  Considering that
   the minimal valid tx_fifo size for each EP is 16, it should be
   reasonable to allocate 1152 entries as: 128 x 8 + 16 x 7 = 1136 (only
   16 entries unused).  With this new setting, we can get more EPs to
   use while removing the above warning messages in the meantime.

2. Another consequence of above invalid g_tx_fifo_size parameter is that
   kernel driver will use values read from hardware register as the
   fall-back.  The value is 2048 for each EP fifo.  That's obviously
   invalid either, because even fifo entries for one EP exceeds the
   total entries 1920.  That's why we see the following fat warning from
   function dwc2_hsotg_init_fifo().  The new g-tx-fifo-size settings
   help to remove the warning as well.

[   65.431634] dwc2 f72c0000.usb: Do port resume before switching to device mode
[   65.624176] insufficient fifo memory
[   65.624369] ------------[ cut here ]------------
[   65.633633] WARNING: CPU: 0 PID: 5 at drivers/usb/dwc2/gadget.c:330 dwc2_hsotg_init_fifo+0x164/0x1ac
[   65.643808] CPU: 0 PID: 5 Comm: kworker/u16:0 Not tainted 4.13.0-rc1-00022-g50861cf9dc1b-dirty #81
[   65.653769] Hardware name: HiKey Development Board (DT)
[   65.659624] Workqueue: dwc2 dwc2_conn_id_status_change
[   65.665377] task: ffffffc005f73400 task.stack: ffffffc005f98000
[   65.671987] PC is at dwc2_hsotg_init_fifo+0x164/0x1ac
[   65.677633] LR is at dwc2_hsotg_init_fifo+0x164/0x1ac
[   65.683275] pc : [<ffffff8008638044>] lr : [<ffffff8008638044>] pstate: 600001c5
[   65.691504] sp : ffffffc005f9bce0
[   65.695218] x29: ffffffc005f9bce0 x28: ffffffc005f6ac00
[   65.701172] x27: ffffffc005f73400 x26: 0000000008000580
[   65.707124] x25: ffffff8008bb4af0 x24: ffffff8008d02b70
[   65.713074] x23: 0000003fcc831084 x22: ffffffc0337cf0bc
[   65.719024] x21: 0000000000000580 x20: ffffffc0337cf018
[   65.724976] x19: ffffffc0337cf098 x18: 0000000000000000
[   65.730926] x17: 0000000000000000 x16: 0000000000000000
[   65.736873] x15: 0000000000000000 x14: ffffff8008ca8900
[   65.742825] x13: 0000004035299000 x12: 0000000034d5d91d
[   65.748775] x11: 0000000000000000 x10: 00000000000008d0
[   65.754726] x9 : ffffffc005f9bce0 x8 : 00000000000001b5
[   65.760674] x7 : 66696620746e6569 x6 : ffffff8008d60050
[   65.766623] x5 : 0000000000000000 x4 : 0000000000000000
[   65.772573] x3 : 0000000000000002 x2 : 0000000000000002
[   65.778521] x1 : 0000000000000001 x0 : 0000000000000018
[   65.784469] Call trace:
[   65.787236] Exception stack(0xffffffc005f9bb10 to 0xffffffc005f9bc40)
[   65.794420] bb00:                                   ffffffc0337cf098 0000008000000000
[   65.803145] bb20: ffffffc005f9bce0 ffffff8008638044 ffffff8008bb4af0 0000000008000580
[   65.811870] bb40: ffffffc005f73400 ffffffc005f6ac00 0000000000000000 ffffff8008da2998
[   65.820595] bb60: ffffffc005f9bce0 ffffffc005f9bce0 ffffffc005f9bca0 00000000ffffffc8
[   65.829315] bb80: ffffffc005f9bbb0 ffffff80081046a0 ffffffc005f9bce0 ffffffc005f9bce0
[   65.838038] bba0: ffffffc005f9bca0 00000000ffffffc8 0000000000000018 0000000000000001
[   65.846761] bbc0: 0000000000000002 0000000000000002 0000000000000000 0000000000000000
[   65.855485] bbe0: ffffff8008d60050 66696620746e6569 00000000000001b5 ffffffc005f9bce0
[   65.864207] bc00: 00000000000008d0 0000000000000000 0000000034d5d91d 0000004035299000
[   65.872928] bc20: ffffff8008ca8900 0000000000000000 0000000000000000 0000000000000000
[   65.900856] [<ffffff8008638044>] dwc2_hsotg_init_fifo+0x164/0x1ac
[   65.927195] [<ffffff800863b390>] dwc2_hsotg_core_init_disconnected+0x80/0x3c0
[   65.954736] [<ffffff800862fef0>] dwc2_conn_id_status_change+0xfc/0x21c
[   65.981561] [<ffffff80080d1ca8>] process_one_work+0x124/0x294
[   66.007419] [<ffffff80080d1e70>] worker_thread+0x58/0x3c8
[   66.023243] [<ffffff80080d79a0>] kthread+0x100/0x12c
[   66.032455] [<ffffff8008082ec0>] ret_from_fork+0x10/0x50
[   66.041987] ---[ end trace 7079dcaa2d9e46fa ]---

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-16 09:32:05 +01:00
Zhangfei Gao 94d2d94b40 arm64: dts: hi6220: add acpu_sctrl
Add acpu_sctrl clock node

Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Li Pengcheng <lipengcheng8@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-16 09:31:01 +01:00
Rob Clark 61b83be911 arm64: dts: qcom: msm8916: Add gpu support
This patch adds the Qualcomm Adreno GPU node that exists in the
MSM8916.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-15 14:07:51 -05:00
Catalin Marinas df5b95bee1 Merge branch 'arm64/vmap-stack' of git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux into for-next/core
* 'arm64/vmap-stack' of git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux:
  arm64: add VMAP_STACK overflow detection
  arm64: add on_accessible_stack()
  arm64: add basic VMAP_STACK support
  arm64: use an irq stack pointer
  arm64: assembler: allow adr_this_cpu to use the stack pointer
  arm64: factor out entry stack manipulation
  efi/arm64: add EFI_KIMG_ALIGN
  arm64: move SEGMENT_ALIGN to <asm/memory.h>
  arm64: clean up irq stack definitions
  arm64: clean up THREAD_* definitions
  arm64: factor out PAGE_* and CONT_* definitions
  arm64: kernel: remove {THREAD,IRQ_STACK}_START_SP
  fork: allow arch-override of VMAP stack alignment
  arm64: remove __die()'s stack dump
2017-08-15 18:40:58 +01:00
Mark Rutland 872d8327ce arm64: add VMAP_STACK overflow detection
This patch adds stack overflow detection to arm64, usable when vmap'd stacks
are in use.

Overflow is detected in a small preamble executed for each exception entry,
which checks whether there is enough space on the current stack for the general
purpose registers to be saved. If there is not enough space, the overflow
handler is invoked on a per-cpu overflow stack. This approach preserves the
original exception information in ESR_EL1 (and where appropriate, FAR_EL1).

Task and IRQ stacks are aligned to double their size, enabling overflow to be
detected with a single bit test. For example, a 16K stack is aligned to 32K,
ensuring that bit 14 of the SP must be zero. On an overflow (or underflow),
this bit is flipped. Thus, overflow (of less than the size of the stack) can be
detected by testing whether this bit is set.

The overflow check is performed before any attempt is made to access the
stack, avoiding recursive faults (and the loss of exception information
these would entail). As logical operations cannot be performed on the SP
directly, the SP is temporarily swapped with a general purpose register
using arithmetic operations to enable the test to be performed.

This gives us a useful error message on stack overflow, as can be trigger with
the LKDTM overflow test:

[  305.388749] lkdtm: Performing direct entry OVERFLOW
[  305.395444] Insufficient stack space to handle exception!
[  305.395482] ESR: 0x96000047 -- DABT (current EL)
[  305.399890] FAR: 0xffff00000a5e7f30
[  305.401315] Task stack:     [0xffff00000a5e8000..0xffff00000a5ec000]
[  305.403815] IRQ stack:      [0xffff000008000000..0xffff000008004000]
[  305.407035] Overflow stack: [0xffff80003efce4e0..0xffff80003efcf4e0]
[  305.409622] CPU: 0 PID: 1219 Comm: sh Not tainted 4.13.0-rc3-00021-g9636aea #5
[  305.412785] Hardware name: linux,dummy-virt (DT)
[  305.415756] task: ffff80003d051c00 task.stack: ffff00000a5e8000
[  305.419221] PC is at recursive_loop+0x10/0x48
[  305.421637] LR is at recursive_loop+0x38/0x48
[  305.423768] pc : [<ffff00000859f330>] lr : [<ffff00000859f358>] pstate: 40000145
[  305.428020] sp : ffff00000a5e7f50
[  305.430469] x29: ffff00000a5e8350 x28: ffff80003d051c00
[  305.433191] x27: ffff000008981000 x26: ffff000008f80400
[  305.439012] x25: ffff00000a5ebeb8 x24: ffff00000a5ebeb8
[  305.440369] x23: ffff000008f80138 x22: 0000000000000009
[  305.442241] x21: ffff80003ce65000 x20: ffff000008f80188
[  305.444552] x19: 0000000000000013 x18: 0000000000000006
[  305.446032] x17: 0000ffffa2601280 x16: ffff0000081fe0b8
[  305.448252] x15: ffff000008ff546d x14: 000000000047a4c8
[  305.450246] x13: ffff000008ff7872 x12: 0000000005f5e0ff
[  305.452953] x11: ffff000008ed2548 x10: 000000000005ee8d
[  305.454824] x9 : ffff000008545380 x8 : ffff00000a5e8770
[  305.457105] x7 : 1313131313131313 x6 : 00000000000000e1
[  305.459285] x5 : 0000000000000000 x4 : 0000000000000000
[  305.461781] x3 : 0000000000000000 x2 : 0000000000000400
[  305.465119] x1 : 0000000000000013 x0 : 0000000000000012
[  305.467724] Kernel panic - not syncing: kernel stack overflow
[  305.470561] CPU: 0 PID: 1219 Comm: sh Not tainted 4.13.0-rc3-00021-g9636aea #5
[  305.473325] Hardware name: linux,dummy-virt (DT)
[  305.475070] Call trace:
[  305.476116] [<ffff000008088ad8>] dump_backtrace+0x0/0x378
[  305.478991] [<ffff000008088e64>] show_stack+0x14/0x20
[  305.481237] [<ffff00000895a178>] dump_stack+0x98/0xb8
[  305.483294] [<ffff0000080c3288>] panic+0x118/0x280
[  305.485673] [<ffff0000080c2e9c>] nmi_panic+0x6c/0x70
[  305.486216] [<ffff000008089710>] handle_bad_stack+0x118/0x128
[  305.486612] Exception stack(0xffff80003efcf3a0 to 0xffff80003efcf4e0)
[  305.487334] f3a0: 0000000000000012 0000000000000013 0000000000000400 0000000000000000
[  305.488025] f3c0: 0000000000000000 0000000000000000 00000000000000e1 1313131313131313
[  305.488908] f3e0: ffff00000a5e8770 ffff000008545380 000000000005ee8d ffff000008ed2548
[  305.489403] f400: 0000000005f5e0ff ffff000008ff7872 000000000047a4c8 ffff000008ff546d
[  305.489759] f420: ffff0000081fe0b8 0000ffffa2601280 0000000000000006 0000000000000013
[  305.490256] f440: ffff000008f80188 ffff80003ce65000 0000000000000009 ffff000008f80138
[  305.490683] f460: ffff00000a5ebeb8 ffff00000a5ebeb8 ffff000008f80400 ffff000008981000
[  305.491051] f480: ffff80003d051c00 ffff00000a5e8350 ffff00000859f358 ffff00000a5e7f50
[  305.491444] f4a0: ffff00000859f330 0000000040000145 0000000000000000 0000000000000000
[  305.492008] f4c0: 0001000000000000 0000000000000000 ffff00000a5e8350 ffff00000859f330
[  305.493063] [<ffff00000808205c>] __bad_stack+0x88/0x8c
[  305.493396] [<ffff00000859f330>] recursive_loop+0x10/0x48
[  305.493731] [<ffff00000859f358>] recursive_loop+0x38/0x48
[  305.494088] [<ffff00000859f358>] recursive_loop+0x38/0x48
[  305.494425] [<ffff00000859f358>] recursive_loop+0x38/0x48
[  305.494649] [<ffff00000859f358>] recursive_loop+0x38/0x48
[  305.494898] [<ffff00000859f358>] recursive_loop+0x38/0x48
[  305.495205] [<ffff00000859f358>] recursive_loop+0x38/0x48
[  305.495453] [<ffff00000859f358>] recursive_loop+0x38/0x48
[  305.495708] [<ffff00000859f358>] recursive_loop+0x38/0x48
[  305.496000] [<ffff00000859f358>] recursive_loop+0x38/0x48
[  305.496302] [<ffff00000859f358>] recursive_loop+0x38/0x48
[  305.496644] [<ffff00000859f358>] recursive_loop+0x38/0x48
[  305.496894] [<ffff00000859f358>] recursive_loop+0x38/0x48
[  305.497138] [<ffff00000859f358>] recursive_loop+0x38/0x48
[  305.497325] [<ffff00000859f3dc>] lkdtm_OVERFLOW+0x14/0x20
[  305.497506] [<ffff00000859f314>] lkdtm_do_action+0x1c/0x28
[  305.497786] [<ffff00000859f178>] direct_entry+0xe0/0x170
[  305.498095] [<ffff000008345568>] full_proxy_write+0x60/0xa8
[  305.498387] [<ffff0000081fb7f4>] __vfs_write+0x1c/0x128
[  305.498679] [<ffff0000081fcc68>] vfs_write+0xa0/0x1b0
[  305.498926] [<ffff0000081fe0fc>] SyS_write+0x44/0xa0
[  305.499182] Exception stack(0xffff00000a5ebec0 to 0xffff00000a5ec000)
[  305.499429] bec0: 0000000000000001 000000001c4cf5e0 0000000000000009 000000001c4cf5e0
[  305.499674] bee0: 574f4c465245564f 0000000000000000 0000000000000000 8000000080808080
[  305.499904] bf00: 0000000000000040 0000000000000038 fefefeff1b4bc2ff 7f7f7f7f7f7fff7f
[  305.500189] bf20: 0101010101010101 0000000000000000 000000000047a4c8 0000000000000038
[  305.500712] bf40: 0000000000000000 0000ffffa2601280 0000ffffc63f6068 00000000004b5000
[  305.501241] bf60: 0000000000000001 000000001c4cf5e0 0000000000000009 000000001c4cf5e0
[  305.501791] bf80: 0000000000000020 0000000000000000 00000000004b5000 000000001c4cc458
[  305.502314] bfa0: 0000000000000000 0000ffffc63f7950 000000000040a3c4 0000ffffc63f70e0
[  305.502762] bfc0: 0000ffffa2601268 0000000080000000 0000000000000001 0000000000000040
[  305.503207] bfe0: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[  305.503680] [<ffff000008082fb0>] el0_svc_naked+0x24/0x28
[  305.504720] Kernel Offset: disabled
[  305.505189] CPU features: 0x002082
[  305.505473] Memory Limit: none
[  305.506181] ---[ end Kernel panic - not syncing: kernel stack overflow

This patch was co-authored by Ard Biesheuvel and Mark Rutland.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
2017-08-15 18:36:18 +01:00
Mark Rutland 12964443e8 arm64: add on_accessible_stack()
Both unwind_frame() and dump_backtrace() try to check whether a stack
address is sane to access, with very similar logic. Both will need
updating in order to handle overflow stacks.

Factor out this logic into a helper, so that we can avoid further
duplication when we add overflow stacks.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
2017-08-15 18:36:12 +01:00
Mark Rutland e3067861ba arm64: add basic VMAP_STACK support
This patch enables arm64 to be built with vmap'd task and IRQ stacks.

As vmap'd stacks are mapped at page granularity, stacks must be a multiple of
PAGE_SIZE. This means that a 64K page kernel must use stacks of at least 64K in
size.

To minimize the increase in Image size, IRQ stacks are dynamically allocated at
boot time, rather than embedding the boot CPU's IRQ stack in the kernel image.

This patch was co-authored by Ard Biesheuvel and Mark Rutland.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
2017-08-15 18:36:04 +01:00
Mark Rutland f60fe78f13 arm64: use an irq stack pointer
We allocate our IRQ stacks using a percpu array. This allows us to generate our
IRQ stack pointers with adr_this_cpu, but bloats the kernel Image with the boot
CPU's IRQ stack. Additionally, these are packed with other percpu variables,
and aren't guaranteed to have guard pages.

When we enable VMAP_STACK we'll want to vmap our IRQ stacks also, in order to
provide guard pages and to permit more stringent alignment requirements. Doing
so will require that we use a percpu pointer to each IRQ stack, rather than
allocating a percpu IRQ stack in the kernel image.

This patch updates our IRQ stack code to use a percpu pointer to the base of
each IRQ stack. This will allow us to change the way the stack is allocated
with minimal changes elsewhere. In some cases we may try to backtrace before
the IRQ stack pointers are initialised, so on_irq_stack() is updated to account
for this.

In testing with cyclictest, there was no measureable difference between using
adr_this_cpu (for irq_stack) and ldr_this_cpu (for irq_stack_ptr) in the IRQ
entry path.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
2017-08-15 18:35:54 +01:00
Ard Biesheuvel 8ea41b11ef arm64: assembler: allow adr_this_cpu to use the stack pointer
Given that adr_this_cpu already requires a temp register in addition
to the destination register, tweak the instruction sequence so that sp
may be used as well.

This will simplify switching to per-cpu stacks in subsequent patches. While
this limits the range of adr_this_cpu, to +/-4GiB, we don't currently use
adr_this_cpu in modules, and this is not problematic for the main kernel image.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
[Mark: add more commit text]
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
2017-08-15 18:35:47 +01:00
Mark Rutland b11e5759bf arm64: factor out entry stack manipulation
In subsequent patches, we will detect stack overflow in our exception
entry code, by verifying the SP after it has been decremented to make
space for the exception regs.

This verification code is small, and we can minimize its impact by
placing it directly in the vectors. To avoid redundant modification of
the SP, we also need to move the initial decrement of the SP into the
vectors.

As a preparatory step, this patch introduces kernel_ventry, which
performs this decrement, and updates the entry code accordingly.
Subsequent patches will fold SP verification into kernel_ventry.

There should be no functional change as a result of this patch.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
[Mark: turn into prep patch, expand commit msg]
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
2017-08-15 18:35:40 +01:00
Mark Rutland 170976bcab efi/arm64: add EFI_KIMG_ALIGN
The EFI stub is intimately coupled with the kernel, and takes advantage
of this by relocating the kernel at a weaker alignment than the
documented boot protocol mandates.

However, it does so by assuming it can align the kernel to the segment
alignment, and assumes that this is 64K. In subsequent patches, we'll
have to consider other details to determine this de-facto alignment
constraint.

This patch adds a new EFI_KIMG_ALIGN definition that will track the
kernel's de-facto alignment requirements. Subsequent patches will modify
this as required.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
2017-08-15 18:35:32 +01:00
Mark Rutland 8018ba4edf arm64: move SEGMENT_ALIGN to <asm/memory.h>
Currently we define SEGMENT_ALIGN directly in our vmlinux.lds.S.

This is unfortunate, as the EFI stub currently open-codes the same
number, and in future we'll want to fiddle with this.

This patch moves the definition to our <asm/memory.h>, where it can be
used by both vmlinux.lds.S and the EFI stub code.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
2017-08-15 18:35:22 +01:00
Mark Rutland f60ad4edcf arm64: clean up irq stack definitions
Before we add yet another stack to the kernel, it would be nice to
ensure that we consistently organise stack definitions and related
helper functions.

This patch moves the basic IRQ stack defintions to <asm/memory.h> to
live with their task stack counterparts. Helpers used for unwinding are
moved into <asm/stacktrace.h>, where subsequent patches will add helpers
for other stacks. Includes are fixed up accordingly.

This patch is a pure refactoring -- there should be no functional
changes as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
2017-08-15 18:35:14 +01:00
Mark Rutland dbc9344a68 arm64: clean up THREAD_* definitions
Currently we define THREAD_SIZE and THREAD_SIZE_ORDER separately, with
the latter dependent on particular CONFIG_ARM64_*K_PAGES definitions.
This is somewhat opaque, and will get in the way of future modifications
to THREAD_SIZE.

This patch cleans this up, defining both in terms of a common
THREAD_SHIFT, and using PAGE_SHIFT to calculate THREAD_SIZE_ORDER,
rather than using a number of definitions dependent on config symbols.
Subsequent patches will make use of this to alter the stack size used in
some configurations.

At the same time, these are moved into <asm/memory.h>, which will avoid
circular include issues in subsequent patches. To ensure that existing
code isn't adversely affected, <asm/thread_info.h> is updated to
transitively include these definitions.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
2017-08-15 18:35:07 +01:00
Mark Rutland b6531456ba arm64: factor out PAGE_* and CONT_* definitions
Some headers rely on PAGE_* definitions from <asm/page.h>, but cannot
include this due to potential circular includes. For example, a number
of definitions in <asm/memory.h> rely on PAGE_SHIFT, and <asm/page.h>
includes <asm/memory.h>.

This requires users of these definitions to include both headers, which
is fragile and error-prone.

This patch ameliorates matters by moving the basic definitions out to a
new header, <asm/page-def.h>. Both <asm/page.h> and <asm/memory.h> are
updated to include this, avoiding this fragility, and avoiding the
possibility of circular include dependencies.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
2017-08-15 18:35:00 +01:00
Ard Biesheuvel 34be98f494 arm64: kernel: remove {THREAD,IRQ_STACK}_START_SP
For historical reasons, we leave the top 16 bytes of our task and IRQ
stacks unused, a practice used to ensure that the SP can always be
masked to find the base of the current stack (historically, where
thread_info could be found).

However, this is not necessary, as:

* When an exception is taken from a task stack, we decrement the SP by
  S_FRAME_SIZE and stash the exception registers before we compare the
  SP against the task stack. In such cases, the SP must be at least
  S_FRAME_SIZE below the limit, and can be safely masked to determine
  whether the task stack is in use.

* When transitioning to an IRQ stack, we'll place a dummy frame onto the
  IRQ stack before enabling asynchronous exceptions, or executing code
  we expect to trigger faults. Thus, if an exception is taken from the
  IRQ stack, the SP must be at least 16 bytes below the limit.

* We no longer mask the SP to find the thread_info, which is now found
  via sp_el0. Note that historically, the offset was critical to ensure
  that cpu_switch_to() found the correct stack for new threads that
  hadn't yet executed ret_from_fork().

Given that, this initial offset serves no purpose, and can be removed.
This brings us in-line with other architectures (e.g. x86) which do not
rely on this masking.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
[Mark: rebase, kill THREAD_START_SP, commit msg additions]
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
2017-08-15 18:34:53 +01:00
Mark Rutland c5bc503cbe arm64: remove __die()'s stack dump
Our __die() implementation tries to dump the stack memory, in addition
to a backtrace, which is problematic.

For contemporary 16K stacks, this can be a lot of data, which can take a
long time to dump, and can push other useful context out of the kernel's
printk ringbuffer (and/or a user's scrollback buffer on an attached
console).

Additionally, the code implicitly assumes that the SP is on the task's
stack, and tries to dump everything between the SP and the highest task
stack address. When the SP points at an IRQ stack (or is corrupted),
this makes the kernel attempt to dump vast amounts of VA space. With
vmap'd stacks, this may result in erroneous accesses to peripherals.

This patch removes the memory dump, leaving us to rely on the backtrace,
and other means of dumping stack memory such as kdump.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
2017-08-15 18:34:39 +01:00
Markus Mayer d551250771 arm64: defconfig: add CONFIG_BRCMSTB_THERMAL
Turn on CONFIG_BRCMSTB_THERMAL as module.

Signed-off-by: Markus Mayer <mmayer@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2017-08-15 10:21:37 -07:00
Arnd Bergmann 4d3ae0d173 ARM64: hisilicon: defconfig updates for 4.14
- Enable Kirin PCIe host, hi6421v530 mfd and regulator,
   syscon reboot mode, serdev bus, OP-TEE and K3 DMA support
   for hikey and hikey960
 
 - Enable pcie based sas controller support for hip08 SoC
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Merge tag 'hisi-defconfig-for-4.14' of git://github.com/hisilicon/linux-hisi into next/arm64

Pull "ARM64: hisilicon: defconfig updates for 4.14" from Wei Xu:

- Enable Kirin PCIe host, hi6421v530 mfd and regulator,
  syscon reboot mode, serdev bus, OP-TEE and K3 DMA support
  for hikey and hikey960

- Enable pcie based sas controller support for hip08 SoC

* tag 'hisi-defconfig-for-4.14' of git://github.com/hisilicon/linux-hisi:
  arm64: defconfig: enable DMA driver for hi3660
  arm64: defconfig: enable OP-TEE
  arm64: defconfig: enable support for serial port connected device
  arm64: defconfig: enable CONFIG_SYSCON_REBOOT_MODE
  arm64: defconfig: enable support hi6421v530 PMIC
  arm64: defconfig: enable Kirin PCIe
  arm64: defconfig: enable SCSI_HISI_SAS_PCI
2017-08-15 18:06:32 +02:00
Ard Biesheuvel f736eb382b arm64: defconfig: add recently added crypto drivers as modules
Add the arm64 crypto drivers that have been added over the past
couple of kernel releases to its defconfig as modules.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2017-08-15 18:05:09 +02:00
Arnd Bergmann 4c28f1958a mvebu arm64 for 4.14 (part 1)
Enabling nop-xceiv PHY driver in the defconfig, needed for USB support
 on A8K SoC based board.
 
 Enabling fine-grained task level IRQ time accounting for ARMv8 as it was
 already done for x86
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Merge tag 'mvebu-arm64-4.14-1' of git://git.infradead.org/linux-mvebu into next/arm64

Pull "mvebu arm64 for 4.14 (part 1)" from Gregory CLEMENT:

Enabling nop-xceiv PHY driver in the defconfig, needed for USB support
on A8K SoC based board.

Enabling fine-grained task level IRQ time accounting for ARMv8 as it was
already done for x86

* tag 'mvebu-arm64-4.14-1' of git://git.infradead.org/linux-mvebu:
  arm64: defconfig: enable fine-grained task level IRQ time accounting
  arm64: defconfig: enable nop-xceiv PHY driver
2017-08-15 18:04:01 +02:00
Keiji Hayashibara 6920c36d2b arm64: defconfig: enable CONFIG_UNIPHIER_WATCHDOG
Enable the watchdog driver for UniPhier SoC

Signed-off-by: Keiji Hayashibara <hayashibara.keiji@socionext.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2017-08-15 18:02:44 +02:00
Arnd Bergmann 01d1cddb20 Renesas ARM64 Based SoC Defconfig Updates for v4.14
* compile ak4613 and renesas sound as modules
 
   This is intended to reduce the size of a kernel image compiled
   using the defconfig. This is timely as it brings the kernel image
   back below the size that can be booted in my environment, a limit
   it crept over in v4.13-rc1.
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Merge tag 'renesas-arm64-defconfig-for-v4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/arm64

Pull "Renesas ARM64 Based SoC Defconfig Updates for v4.14" from Simon Horman:

* compile ak4613 and renesas sound as modules

  This is intended to reduce the size of a kernel image compiled
  using the defconfig. This is timely as it brings the kernel image
  back below the size that can be booted in my environment, a limit
  it crept over in v4.13-rc1.

* tag 'renesas-arm64-defconfig-for-v4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  arm64: defconfig: compile ak4613 and renesas sound as modules
2017-08-15 18:00:40 +02:00
Viresh Kumar e675ac4767 arm64: defconfig: Enable CONFIG_WQ_POWER_EFFICIENT_DEFAULT
commit cee22a1505 ("workqueues: Introduce new flag WQ_POWER_EFFICIENT
for power oriented workqueues") introduced the concept of power
efficient workqueues (4 years back), but it was never enabled in
upstream kernel configs.

Power efficient workqueues are simply marked as "unbound," so that jobs
queued to them can run on any CPU in the system. It leaves the target
CPU selection to the scheduler, which is the best place for such
decision making. This improves power efficiency for workqueues which are
otherwise pinned to a CPU.

Enable it for ARM64 platforms as ARM platforms were the main target for
the introduction of power efficient workqueues.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2017-08-15 18:00:22 +02:00
Dou Liyang 969ff73e72 arm64: numa: Remove the unused parent_node() macro
Commit a7be6e5a7f ("mm: drop useless local parameters of
__register_one_node()") removes the last user of parent_node().

The parent_node() macro in ARM64 platform is unnecessary.

Remove it for cleanup.

Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-15 14:37:45 +01:00
Jagan Teki 4969efb28b arm64: allwinner: a64: Add A64-OLinuXino initial support
OLimex A64-OLinuXino is an open-source hardware board
using the Allwinner A64 SOC.

OLimex A64-OLinuXino has
- A64 Quad-core Cortex-A53 64bit
- 1GB or 2GB RAM DDR3L @ 672Mhz
- microSD slot and 4/8/16GB eMMC
- Debug TTL UART
- HDMI
- LCD
- IR receiver
- 5V DC power supply

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2017-08-15 12:07:11 +08:00
Jagan Teki bf39721453 arm64: allwinner: a64: Add initial NanoPi A64 support
NanoPi A64 is a new board of high performance with low cost
designed by FriendlyElec., using the Allwinner A64 SOC.

Nanopi A64 features
- Allwinner A64, 64-bit Quad-core Cortex-A53@648MHz to 1.152GHz, DVFS
- 1GB DDR3 RAM
- MicroSD
- Gigabit Ethernet (RTL8211E)
- Wi-Fi 802.11b/g/n
- IR receiver
- Audio In/Out
- Video In/Out
- Serial Debug Port
- microUSB 5V 2A DC power-supply

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2017-08-15 12:07:10 +08:00
Wang Ruyi 4bd68d6038 arm64: defconfig: enable DMA driver for hi3660
enable DMA driver for hi3660.

Signed-off-by: Wang Ruyi <wangruyi@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-14 16:14:16 +01:00
Victor Chong e5e489fb46 arm64: defconfig: enable OP-TEE
This patch enables configs for Trusted Execution Environment (TEE) and
OP-TEE.

+CONFIG_TEE=y
+CONFIG_OPTEE=y

Signed-off-by: Victor Chong <victor.chong@linaro.org>
Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-14 16:14:14 +01:00
Guodong Xu 9a713a529b arm64: defconfig: enable support for serial port connected device
This patch enables these configs:

+CONFIG_SERIAL_DEV_BUS=y
+CONFIG_SERIAL_DEV_CTRL_TTYPORT=y

As example, a bluetooth device connected to UART port can be supported by
this.

Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-14 16:14:12 +01:00
Guodong Xu a0d62c70e3 arm64: defconfig: enable CONFIG_SYSCON_REBOOT_MODE
Enable CONFIG_SYSCON_REBOOT_MODE

Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-14 16:14:10 +01:00
Guodong Xu 24dec0d532 arm64: defconfig: enable support hi6421v530 PMIC
Enable configs for hi6421v530 mfd and regulator driver
 + CONFIG_MFD_HI6421_PMIC=y
 + CONFIG_REGULATOR_HI6421V530=y

Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-14 16:14:08 +01:00
Xiaowei Song 9133e4fb37 arm64: defconfig: enable Kirin PCIe
Enable HiSilicon Kirin series SoCs PCIe controllers

Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Xiaowei Song <songxiaowei@hisilicon.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-14 15:50:05 +01:00
John Garry 904353e0b6 arm64: defconfig: enable SCSI_HISI_SAS_PCI
Enable HiSilicon SAS controller based on PCI device,
which is included in hip08 SoC.

Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-14 15:49:00 +01:00
Grzegorz Jaszczyk 0ea62502a5 ARM64: dts: marvell: enable USB host on Armada-8040-DB
Enable USB host on Armada-8040-DB by adding USB PHY nodes for the
following ports:
  - host 0 and 1 of CPM
  - host 0 of CPS

These PHY are enabled by lanes coming from regulators based on two
I2C expanders.

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2017-08-14 16:30:43 +02:00
Hanna Hawa 915c71da13 ARM64: dts: marvell: enable USB host on Armada-7040-DB
Add I2C expander and USB host PHY (host 0 and host 1) to enable
USB VBUS on USB ports of type A on Armada-7040-DB.

Signed-off-by: Hanna Hawa <hannah@marvell.com>
Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2017-08-14 16:30:34 +02:00
Gregory CLEMENT 40118824c5 ARM64: dts: marvell: add NAND support on the CP110
The NAND controller used in A7K/A8K is present on the CP110. It is
compatible with the pxa-nand driver.

However, due to the limiation of the pins available this controller is
only usable on the CPM for A7K and on the CPS for A8K.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2017-08-14 16:28:58 +02:00
Zhou Wang 9f5ce88de8 arm64: dts: hisi: add PCIe host controller node for hip07 SoC
Add one PCIe host controller node for HiSilicon Hip07 SoC and enable it in
D05 board.

Signed-off-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
2017-08-14 15:25:39 +01:00
Jagan Teki 908d10b02b arm64: defconfig: Enable REGULATOR_AXP20X
The Allwinner A64 SoC is paired with the X-Powers AXP803 PMIC over the
Reduced Serial Bus (RSB). The regulators of this PMIC supply all power
rails of the SoC and many external peripherals.

Enable the driver for the regulators of this PMIC.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
[wens@csie.org: refined commit message]
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2017-08-14 15:26:09 +08:00
Jagan Teki 88e96d58ad arm64: defconfig: Enable MFD_AXP20X_RSB
The Allwinner A64 SoC is paired with the X-Powers AXP803 PMIC over the
Reduced Serial Bus (RSB).

Enable the driver for this PMIC.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
[wens@csie.org: Refined commit message]
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2017-08-14 15:23:09 +08:00
Icenowy Zheng d86e63e1f0 arm64: allwinner: h5: fix pinctrl IRQs
The pin controller of H5 has three IRQs at the chip's GIC, which
represents three banks of pinctrl IRQs. However, the device tree used to
miss the third IRQ of the pin controller, which makes the PG bank IRQ
not usable.

Add the missing IRQ to the pinctrl node.

Fixes: 4e36de179f ("arm64: allwinner: h5: add Allwinner H5 .dtsi")
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2017-08-14 14:18:21 +08:00
Shawn Guo 5470964f8c arm64: dts: zte: add initial zx296718-pcbox board support
It adds the initial zx296718-pcbox board support with devices like
storage, audio and VGA output enabled.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2017-08-14 09:51:16 +08:00
Shawn Guo e419a9a010 arm64: dts: zx296718-evb: add I2S sound card support
It enables the I2S sound card support, which is used to drive audio
through aud96p22 codec in case of TV output.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2017-08-14 09:51:15 +08:00
Shawn Guo 6285fccee5 arm64: dts: zx296718-evb: use audio-graph-card for HDMI audio
Instead of simple-audio-card, audio-graph-card is recommended for audio
bindings.  Let's change to it, so that the HDMI/SPDIF audio card can
align with the new I2S/Codec card which will be added later.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2017-08-14 09:51:15 +08:00
Shawn Guo a9aa280a5c arm64: dts: zx296718: add irdec device for remote control
Add irdec device for remote control support.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2017-08-14 09:51:15 +08:00
Shawn Guo 2b31230aa0 arm64: dts: zx296718: add PWM device support
It adds PWM device support which will be used to control voltage of core
supply on some boards.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2017-08-14 09:51:15 +08:00
Shawn Guo dceb9491c6 arm64: dts: zx296718: add voltage data into OPP table
We will enable PWM device to control voltage through pwm-regulator
support.  So let's add voltage data into OPP table.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2017-08-14 09:51:15 +08:00
Shawn Guo 41ec0d50e2 arm64: dts: zx296718: set a better parent clock for I2S0
The default I2S0 parent clock AUDIO_24M can not be divided into required
sample rate in some cases, for example when 48KHz is needed.  Change the
parent clock to AUDIO_99M which works for most sample rates.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2017-08-14 09:51:14 +08:00
Shawn Guo 9e5edc8271 arm64: dts: zx296718: add pinctrl and gpio devices
It adds pinctrl and gpio devices for zx296718 SoC support.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2017-08-14 09:51:14 +08:00
Shawn Guo 391752fbaa arm64: dts: zx296718: add I2S and I2C audio codec
It adds I2S and I2C audio codec devices for zx296718 SoC support.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2017-08-14 09:51:14 +08:00
Shawn Guo 0d348d53e6 arm64: dts: zx296718: add VGA device support
It adds VGA device in zx296718.dtsi, so that boards with VGA connector
can enable the support by changing 'status' in board DTS file.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2017-08-14 09:51:14 +08:00
Shawn Guo 03d95c264a arm64: select PINCTRL for ZTE platform
Select PINCTRL for ZTE platform, so that we can have ZX pinctrl driver
options available for enabling.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2017-08-14 09:50:24 +08:00
Ashish Kumar f83de4f008 arm64: dts: ls1088: Correction in Board name from "L1088A" to "LS1088A"
Signed-off-by: Ashish Kumar <Ashish.Kumar@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2017-08-14 09:39:45 +08:00
Yuantian Tang 39a71db1e2 arm64: dts: ls208xa: add cpu idle support
ls208xa supports another cpu idle state which is pw20 which saves
more power when cpu is idle.
It was implemented through psci firmware.

Signed-off-by: Tang Yuantian <andy.tang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2017-08-14 09:14:19 +08:00
Yuantian Tang 5334e1a249 arm64: dts: ls1088a: add cpu idle support
ls1088a supports another cpu idle state which is ph20 which saves
more power when cpu is idle.
It was implemented through psci firmware.

Signed-off-by: Tang Yuantian <andy.tang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2017-08-14 09:14:14 +08:00
Heiko Stuebner ed562b2f39 arm64: dts: rockchip: remove num-slots property from rk3399-sapphire
When adding the rk3399 sapphire som, two more of the recently removed
num-slots properties of dw-mmc nodes slipped in.
Remove them again.

Fixes: 8164a84cca ("arm64: dts: rockchip: Add support for rk3399 sapphire SOM")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2017-08-13 13:56:30 +02:00
Ingo Molnar b60bf53abc Merge branch 'clockevents/4.13-fixes' of http://git.linaro.org/people/daniel.lezcano/linux into timers/urgent
Pull clockevents fixes from Daniel Lezcano:

" - Fix error check against IS_ERR() instead of NULL for the timer-of code (Dan Carpenter)
  - Fix infinite recusion with ftrace for the ARM architected timer (Ding Tianhong)
  - Fix the error code return in the em_sti's probe function (Gustavo A. R.  Silva)
  - Fix Kconfig dependency for the pistachio driver (Matt Redfearn)
  - Fix mem frame loop initialization for the ARM architected timer (Matthias Kaehlcke)"

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-08-13 11:39:45 +02:00
Masahiro Yamada e5aefb380e arm64: dts: uniphier: add Denali NAND controller nodes
Add NAND controller node to LD11 and LD20.  Neither of them supports
the CS1 line, so pinctrl is set up for a single CS line.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-08-13 08:43:27 +09:00
David Wu 4b05bc6157 ARM64: dts: rockchip: Enable gmac2phy for rk3328-evb
Enable the gmac2phy, make the gmac2phy work on
the rk3328-evb board.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11 14:28:59 -07:00
David Wu 9c4cc910fe ARM64: dts: rockchip: Add gmac2phy node support for rk3328
The gmac2phy controller of rk3328 is connected to integrated PHY
directly inside, add the node for the integrated PHY support.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11 14:28:59 -07:00
David Wu 6b49668e17 arm64: defconfig: Enable CONFIG_ROCKCHIP_PHY
Make the rockchip PHY driver built into the kernel.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11 14:28:58 -07:00
Rocky Hao ab78718bda arm64: dts: rockchip: Enable tsadc module on RK3328 eavluation board
enable tsadc module on RK3328 eavluation board

Signed-off-by: Rocky Hao <rocky.hao@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2017-08-11 17:15:02 +02:00
Rocky Hao 87e0d607e5 arm64: dts: rockchip: add thermal nodes for rk3328 SoC
add thermal zone and dynamic CPU power coefficients for rk3328

Signed-off-by: Rocky Hao <rocky.hao@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2017-08-11 17:14:20 +02:00
Rocky Hao 20590de280 arm64: dts: rockchip: add tsadc node for rk3328 SoC
add tsadc needed main information for rk3328 SoC.
50000Hz is the max clock rate supported by tsadc module.

Signed-off-by: Rocky Hao <rocky.hao@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2017-08-11 17:13:34 +02:00
Ding Tianhong adb4f11e0a clocksource/drivers/arm_arch_timer: Avoid infinite recursion when ftrace is enabled
On platforms with an arch timer erratum workaround, it's possible for
arch_timer_reg_read_stable() to recurse into itself when certain
tracing options are enabled, leading to stack overflows and related
problems.

For example, when PREEMPT_TRACER and FUNCTION_GRAPH_TRACER are
selected, it's possible to trigger this with:

$ mount -t debugfs nodev /sys/kernel/debug/
$ echo function_graph > /sys/kernel/debug/tracing/current_tracer

The problem is that in such cases, preempt_disable() instrumentation
attempts to acquire a timestamp via trace_clock(), resulting in a call
back to arch_timer_reg_read_stable(), and hence recursion.

This patch changes arch_timer_reg_read_stable() to use
preempt_{disable,enable}_notrace(), which avoids this.

This problem is similar to the fixed by upstream commit 96b3d28bf4
("sched/clock: Prevent tracing recursion in sched_clock_cpu()").

Fixes: 6acc71ccac ("arm64: arch_timer: Allows a CPU-specific erratum to only affect a subset of CPUs")
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2017-08-11 16:01:43 +02:00
Kevin Brodsky 82d24d114f arm64: compat: Remove leftover variable declaration
Commit a1d5ebaf8c ("arm64: big-endian: don't treat code as data when
copying sigret code") moved the 32-bit sigreturn trampoline code from
the aarch32_sigret_code array to kuser32.S. The commit removed the
array definition from signal32.c, but not its declaration in
signal32.h. Remove the leftover declaration.

Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
Signed-off-by: Mark Salyzyn <salyzyn@android.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-10 18:17:32 +01:00
Arnd Bergmann caf5ef7d15 arm64: fix pmem interface definition
Defining the two functions as 'static inline' and exporting them
leads to the interesting case where we can use the interface
from loadable modules, but not from built-in drivers, as shown
in this link failure:

vers/nvdimm/claim.o: In function `nsio_rw_bytes':
claim.c:(.text+0x1b8): undefined reference to `arch_invalidate_pmem'
drivers/nvdimm/pmem.o: In function `pmem_dax_flush':
pmem.c:(.text+0x11c): undefined reference to `arch_wb_cache_pmem'
drivers/nvdimm/pmem.o: In function `pmem_make_request':
pmem.c:(.text+0x5a4): undefined reference to `arch_invalidate_pmem'
pmem.c:(.text+0x650): undefined reference to `arch_invalidate_pmem'
pmem.c:(.text+0x6d4): undefined reference to `arch_invalidate_pmem'

This removes the bogus 'static inline'.

Fixes: d50e071fda ("arm64: Implement pmem API support")
Acked-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-10 18:13:59 +01:00
Julien Thierry e884f80cf2 arm64: perf: add support for Cortex-A35
The Cortex-A35 uses some implementation defined perf events.

The Cortex-A35 derives from the Cortex-A53 core, using the same event mapings
based on Cortex-A35 TRM r0p2, section C2.3 - Performance monitoring events
(pages C2-562 to C2-565).

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-08-10 17:46:49 +01:00
Julien Thierry 5561b6c5e9 arm64: perf: add support for Cortex-A73
The Cortex-A73 uses some implementation defined perf events.

This patch sets up the necessary mapping for Cortex-A73.

Mappings are based on Cortex-A73 TRM r0p2, section 11.9 Events
(pages 11-457 to 11-460).

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-08-10 17:46:44 +01:00
Will Deacon d0d09d4d99 arm64: perf: Remove redundant entries from CPU-specific event maps
Now that the event mapping code always looks into the PMUv3 events
before any extended mappings, the extended mappings can be reduced to
only those events that are not discoverable through the PMCEID registers.

Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-08-10 17:45:07 +01:00
Julien Thierry 5cf7fb26ea arm64: perf: Connect additional events to pmu counters
Last level caches and node events were almost never connected in current
supported cores.

We connect last level caches to the actual last level within the core and
node events are connected to bus accesses.

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-08-10 17:44:58 +01:00
Masami Hiramatsu 229a718605 irq: Make the irqentry text section unconditional
Generate irqentry and softirqentry text sections without
any Kconfig dependencies. This will add extra sections, but
there should be no performace impact.

Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: David S . Miller <davem@davemloft.net>
Cc: Francis Deslauriers <francis.deslauriers@efficios.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: linux-arch@vger.kernel.org
Cc: linux-cris-kernel@axis.com
Cc: mathieu.desnoyers@efficios.com
Link: http://lkml.kernel.org/r/150172789110.27216.3955739126693102122.stgit@devbox
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-08-10 16:28:53 +02:00
Peter Zijlstra a9668cd6ee locking: Remove smp_mb__before_spinlock()
Now that there are no users of smp_mb__before_spinlock() left, remove
it entirely.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-08-10 12:29:03 +02:00
Peter Zijlstra d89e588ca4 locking: Introduce smp_mb__after_spinlock()
Since its inception, our understanding of ACQUIRE, esp. as applied to
spinlocks, has changed somewhat. Also, I wonder if, with a simple
change, we cannot make it provide more.

The problem with the comment is that the STORE done by spin_lock isn't
itself ordered by the ACQUIRE, and therefore a later LOAD can pass over
it and cross with any prior STORE, rendering the default WMB
insufficient (pointed out by Alan).

Now, this is only really a problem on PowerPC and ARM64, both of
which already defined smp_mb__before_spinlock() as a smp_mb().

At the same time, we can get a much stronger construct if we place
that same barrier _inside_ the spin_lock(). In that case we upgrade
the RCpc spinlock to an RCsc.  That would make all schedule() calls
fully transitive against one another.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-08-10 12:29:02 +02:00
Robin Murphy 21cfa0e96d arm64: uaccess: Add the uaccess_flushcache.c file
The uaccess_flushcache.c file was inadvertently dropped by the
maintainer in a previous commit. Add it back.

Fixes: 5d7bdeb1ee ("arm64: uaccess: Implement *_flushcache variants")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-10 10:49:21 +01:00
Icenowy Zheng 3bc1de8c75 arm64: allwinner: a64: add proper support for the Wi-Fi on BPi M64
BPi M64 has an AP6212 Wi-Fi/Bluetooth combo module, and the Wi-Fi SDIO
card is connected to the mmc1 controller.

The pwrseq of the mmc1 (used to reset the card) used to missing, and the
out-of-band interrupt line of the card is not specified.

Fix these issues for proper Wi-Fi support of BPi M64.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2017-08-10 15:23:46 +08:00
Icenowy Zheng 0ff75efbc9 arm64: allwinner: a64: enable AXP803 for Banana Pi M64
Banana Pi M64 board uses an AXP803 PMIC.

Enable the PMIC and its regulators.

As we have now proper regulators support, missing or dummy regulators
are changed to the correct ones.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2017-08-10 15:19:32 +08:00
Icenowy Zheng 15ec959872 arm64: allwinner: a64: enable USB host controller for BPi M64
Banana Pi M64 connects the USB host-only controller on A64 SoC to a USB
hub, which provided the two USB Type-A ports on the board.

Enable the USB host controller.

The OTG function of the Micro-USB port needs the drivevbus function of
the AXP803 driver implemented, so it's not enabled now.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2017-08-10 15:17:26 +08:00
Icenowy Zheng 56a9155074 arm64: allwinner: a64: sopine: add missing ethernet0 alias
The EMAC Ethernet controller was enabled, but an accompanying alias
was not added. This results in unstable numbering if other Ethernet
devices, such as a USB dongle, are present. Also, the bootloader uses
the alias to assign a generated stable MAC address to the device node.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Fixes: 96219b0048 ("arm64: allwinner: a64: add device tree for SoPine
		      with baseboard")
[wens@csie.org: Rewrite commit log as fixing a previous patch with Fixes]
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2017-08-10 14:02:38 +08:00
Icenowy Zheng dff751c689 arm64: allwinner: a64: pine64: add missing ethernet0 alias
The EMAC Ethernet controller was enabled, but an accompanying alias
was not added. This results in unstable numbering if other Ethernet
devices, such as a USB dongle, are present. Also, the bootloader uses
the alias to assign a generated stable MAC address to the device node.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Fixes: 9702394374 ("arm64: allwinner: pine64: Enable dwmac-sun8i")
[wens@csie.org: Rewrite commit log as fixing a previous patch with Fixes]
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2017-08-10 14:01:38 +08:00
Icenowy Zheng 7dc88d2afb arm64: allwinner: a64: bananapi-m64: add missing ethernet0 alias
The EMAC Ethernet controller was enabled, but an accompanying alias
was not added. This results in unstable numbering if other Ethernet
devices, such as a USB dongle, are present. Also, the bootloader uses
the alias to assign a generated stable MAC address to the device node.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Fixes: e729549990 ("arm64: allwinner: bananapi-m64: Enable dwmac-sun8i")
[wens@csie.org: Rewrite commit log as fixing a previous patch with Fixes]
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2017-08-10 14:00:10 +08:00
Daniel Borkmann c362b2f34e bpf, arm64: implement jiting of BPF_J{LT, LE, SLT, SLE}
This work implements jiting of BPF_J{LT,LE,SLT,SLE} instructions
with BPF_X/BPF_K variants for the arm64 eBPF JIT.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-09 16:53:56 -07:00
Masahiro Yamada 6b8b062ead arm64: dts: uniphier: use cross-arch include instead of symlinks
On UniPhier platform, some DTSI files are shared between arm and arm64.
Recently, inclusion of DT material of different architectures has been
supported by the build system level.  Use #include <arm/...>, which
will work without relying on the exact same hierarchy as the kernel.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-08-10 01:47:52 +09:00
Masahiro Yamada 5740ea4e7b arm64: dts: uniphier: use #include instead of /include/
To include dt-bindings headers.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-08-10 01:47:48 +09:00
Catalin Marinas 0553896787 Merge branch 'arm64/exception-stack' of git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux into for-next/core
* 'arm64/exception-stack' of git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux:
  arm64: unwind: remove sp from struct stackframe
  arm64: unwind: reference pt_regs via embedded stack frame
  arm64: unwind: disregard frame.sp when validating frame pointer
  arm64: unwind: avoid percpu indirection for irq stack
  arm64: move non-entry code out of .entry.text
  arm64: consistently use bl for C exception entry
  arm64: Add ASM_BUG()
2017-08-09 15:37:49 +01:00
Dave Martin 66c3ec5a71 arm64: neon: Forbid when irqs are disabled
Currently, may_use_simd() can return true if IRQs are disabled.  If
the caller goes ahead and calls kernel_neon_begin(), this can
result in use of local_bh_enable() in an unsafe context.

In particular, __efi_fpsimd_begin() may do this when calling EFI as
part of system shutdown.

This patch ensures that callers don't think they can use
kernel_neon_begin() in such a context.

Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-09 15:05:59 +01:00
Ard Biesheuvel 31e43ad3b7 arm64: unwind: remove sp from struct stackframe
The unwind code sets the sp member of struct stackframe to
'frame pointer + 0x10' unconditionally, without regard for whether
doing so produces a legal value. So let's simply remove it now that
we have stopped using it anyway.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
2017-08-09 14:10:29 +01:00
Ard Biesheuvel 7326749801 arm64: unwind: reference pt_regs via embedded stack frame
As it turns out, the unwind code is slightly broken, and probably has
been for a while. The problem is in the dumping of the exception stack,
which is intended to dump the contents of the pt_regs struct at each
level in the call stack where an exception was taken and routed to a
routine marked as __exception (which means its stack frame is right
below the pt_regs struct on the stack).

'Right below the pt_regs struct' is ill defined, though: the unwind
code assigns 'frame pointer + 0x10' to the .sp member of the stackframe
struct at each level, and dump_backtrace() happily dereferences that as
the pt_regs pointer when encountering an __exception routine. However,
the actual size of the stack frame created by this routine (which could
be one of many __exception routines we have in the kernel) is not known,
and so frame.sp is pretty useless to figure out where struct pt_regs
really is.

So it seems the only way to ensure that we can find our struct pt_regs
when walking the stack frames is to put it at a known fixed offset of
the stack frame pointer that is passed to such __exception routines.
The simplest way to do that is to put it inside pt_regs itself, which is
the main change implemented by this patch. As a bonus, doing this allows
us to get rid of a fair amount of cruft related to walking from one stack
to the other, which is especially nice since we intend to introduce yet
another stack for overflow handling once we add support for vmapped
stacks. It also fixes an inconsistency where we only add a stack frame
pointing to ELR_EL1 if we are executing from the IRQ stack but not when
we are executing from the task stack.

To consistly identify exceptions regs even in the presence of exceptions
taken from entry code, we must check whether the next frame was created
by entry text, rather than whether the current frame was crated by
exception text.

To avoid backtracing using PCs that fall in the idmap, or are controlled
by userspace, we must explcitly zero the FP and LR in startup paths, and
must ensure that the frame embedded in pt_regs is zeroed upon entry from
EL0. To avoid these NULL entries showin in the backtrace, unwind_frame()
is updated to avoid them.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
[Mark: compare current frame against .entry.text, avoid bogus PCs]
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
2017-08-09 14:07:13 +01:00
Dmitry Safonov 739586951b arm64/vdso: Support mremap() for vDSO
vDSO VMA address is saved in mm_context for the purpose of using
restorer from vDSO page to return to userspace after signal handling.

In Checkpoint Restore in Userspace (CRIU) project we place vDSO VMA
on restore back to the place where it was on the dump.
With the exception for x86 (where there is API to map vDSO with
arch_prctl()), we move vDSO inherited from CRIU task to restoree
position by mremap().

CRIU does support arm64 architecture, but kernel doesn't update
context.vdso pointer after mremap(). Which results in translation
fault after signal handling on restored application:
https://github.com/xemul/criu/issues/288

Make vDSO code track the VMA address by supplying .mremap() fops
the same way it's done for x86 and arm32 by:
commit b059a453b1 ("x86/vdso: Add mremap hook to vm_special_mapping")
commit 280e87e98c ("ARM: 8683/1: ARM32: Support mremap() for sigpage/vDSO").

Cc: Russell King <rmk+kernel@armlinux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Pavel Emelyanov <xemul@virtuozzo.com>
Cc: Christopher Covington <cov@codeaurora.org>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-09 12:16:28 +01:00
Robin Murphy 5d7bdeb1ee arm64: uaccess: Implement *_flushcache variants
Implement the set of copy functions with guarantees of a clean cache
upon completion necessary to support the pmem driver.

Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-09 12:16:26 +01:00
Robin Murphy d50e071fda arm64: Implement pmem API support
Add a clean-to-point-of-persistence cache maintenance helper, and wire
up the basic architectural support for the pmem driver based on it.

Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
[catalin.marinas@arm.com: move arch_*_pmem() functions to arch/arm64/mm/flush.c]
[catalin.marinas@arm.com: change dmb(sy) to dmb(osh)]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-09 12:15:45 +01:00
Robin Murphy e1bc5d1b8e arm64: Handle trapped DC CVAP
Cache clean to PoP is subject to the same access controls as to PoC, so
if we are trapping userspace cache maintenance with SCTLR_EL1.UCI, we
need to be prepared to handle it. To avoid getting into complicated
fights with binutils about ARMv8.2 options, we'll just cheat and use the
raw SYS instruction rather than the 'proper' DC alias.

Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-09 11:00:43 +01:00
Robin Murphy 7aac405ebb arm64: Expose DC CVAP to userspace
The ARMv8.2-DCPoP feature introduces persistent memory support to the
architecture, by defining a point of persistence in the memory
hierarchy, and a corresponding cache maintenance operation, DC CVAP.
Expose the support via HWCAP and MRS emulation.

Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-09 11:00:35 +01:00
Robin Murphy d46befef4c arm64: Convert __inval_cache_range() to area-based
__inval_cache_range() is already the odd one out among our data cache
maintenance routines as the only remaining range-based one; as we're
going to want an invalidation routine to call from C code for the pmem
API, let's tweak the prototype and name to bring it in line with the
clean operations, and to make its relationship with __dma_inv_area()
neatly mirror that of __clean_dcache_area_poc() and __dma_clean_area().
The loop clearing the early page tables gets mildly massaged in the
process for the sake of consistency.

Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-09 11:00:23 +01:00
Robin Murphy 09c2a7dc4c arm64: mm: Fix set_memory_valid() declaration
Clearly, set_memory_valid() has never been seen in the same room as its
declaration... Whilst the type mismatch is such that kexec probably
wasn't broken in practice, fix it to match the definition as it should.

Fixes: 9b0aa14e31 ("arm64: mm: add set_memory_valid()")
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-09 10:59:52 +01:00
Helmut Klein f72d6f6037 ARM64: dts: meson-gx: use stable UART bindings with correct gate clock
This patch switches to the stable UART bindings but also add the correct
gate clock to the non-AO UART nodes for GXBB and GXL SoCs.

Acked-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Helmut Klein <hgkr.klein@gmail.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2017-08-08 14:48:56 -07:00
Bjorn Andersson cadcd35ffa arm64: dts: qcom: msm8996: Specify smd-edge for ADSP
Add the smd-edge node for the adsp, to allow SMD communication with the
ADSP.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-08 16:29:55 -05:00
Bjorn Andersson a147eda711 arm64: dts: msm8996: Add modem smp2p nodes
This patch adds the SMP2P nodes for the modem.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-08 16:29:54 -05:00
Rajendra Nayak 660a9763c6 arm64: dts: qcom: db820c: Add pm8994 regulator node
Add PM8994 RPM regulators with their min/max voltages to DB820c.

Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-08 16:29:54 -05:00
Bjorn Andersson f742f8788f arm64: dts: qcom: Add RPM glink nodes to msm8996
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-08 16:29:53 -05:00
Vivek Gautam 1e39255ed2 arm64: dts: msm8996: Add device node for qcom,dwc3
Adding required device node for couple of DWC3 controllers
present on msm8996 chipset to enable High speed and Super
speed USB support.

Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-08 16:29:52 -05:00
Vivek Gautam 12c67fe688 arm64: dts: msm8996: Add device node for qcom qmp-phy for pcie
Add required device node for QMP phy based 3-lane PCIe phy
present on msm8996 chipset to enable support for the same.

Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-08 16:29:52 -05:00
Vivek Gautam 42bd05442e arm64: dts: msm8996: Add device node for qcom qmp-phy for usb
Adding required device node for USB3 QMP phy present on
msm8996 chipset to enable support for the same. This phy
provides super speed usb functionality for dwc3 controller
on msm8996.

Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-08 16:29:51 -05:00
Vivek Gautam 6785fa95fc arm64: dts: msm8996: Add device node for qcom qusb2 phy
Adding device node for QUSB2 phy and the required infrastructure
to enable support for the same. This phy is used by dwc3 controller
present on msm8996.

Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-08 16:29:50 -05:00
Hans Verkuil 5a125b63df arm64: dts: qcom: add cec clock for apq8016 board
The adv7533 on this board needs a cec clock. Hook it up in the dtsi
to enable CEC for the HDMI transmitters.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-08 16:29:50 -05:00
Vivek Gautam 133767d94a arm64: dts: pmi8994: Add device node for pmi8994 gpios
Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-08 16:29:49 -05:00
Suzuki K. Poulose 8e0b000921 arm64: dts: qcom-msm8916: dts: Update coresight replicator
Replace the obsolete compatible string for Coresight programmable
replicator with the new one.

Cc: Andy Gross <andy.gross@linaro.org>
Cc: David Brown <david.brown@linaro.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-08 16:29:49 -05:00
Stephen Boyd 2691cb4e42 arm64: dts: qcom: Force host mode for USB on apq8016-sbc
Commit ed75d6a969 ("arm64: dts: qcom: Collapse usb support into
one node") breaks host mode support on apq8016-sbc boards. This
is because the mux driver (tc7usb40mu) hasn't been merged.
Without that driver, we can't toggle the GPIO going to the mux to
route out the D+/D- lines to the USB hub that's on the board.

One solution would be to totally revert this change, but that
opens us up to other problems when two USB drivers are operating
the same hardware block at the same time. Let's modify the DT so
that the USB controller is always in host mode and connected to
the hub so that things like USB keyboards and mouses work. This
is the mode that most people prefer anyway with these devices. We
also delete the usb-switch node because the binding was never
accepted upstream.

In the future, we can add muxing support and then update the DT
to support both modes at runtime. Patches to support this are
already on the mailing list.

Fixes: ed75d6a969 ("arm64: dts: qcom: Collapse usb support into one node")
Reported-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-08-08 16:29:48 -05:00
Will Deacon 6c833bb924 arm64: perf: Allow standard PMUv3 events to be extended by the CPU type
Rather than continue adding CPU-specific event maps, instead look up by
default in the PMUv3 event map and only fallback to the CPU-specific maps
if either the event isn't described by PMUv3, or it is described but
the PMCEID registers say that it is unsupported by the current CPU.

Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-08-08 17:12:34 +01:00
Ard Biesheuvel c736533075 arm64: unwind: disregard frame.sp when validating frame pointer
Currently, when unwinding the call stack, we validate the frame pointer
of each frame against frame.sp, whose value is not clearly defined, and
which makes it more difficult to link stack frames together across
different stacks. It is far better to simply check whether the frame
pointer itself points into a valid stack.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
2017-08-08 16:28:26 +01:00
Mark Rutland 096683724c arm64: unwind: avoid percpu indirection for irq stack
Our IRQ_STACK_PTR() and on_irq_stack() helpers both take a cpu argument,
used to generate a percpu address. In all cases, they are passed
{raw_,}smp_processor_id(), so this parameter is redundant.

Since {raw_,}smp_processor_id() use a percpu variable internally, this
approach means we generate a percpu offset to find the current cpu, then
use this to index an array of percpu offsets, which we then use to find
the current CPU's IRQ stack pointer. Thus, most of the work is
redundant.

Instead, we can consistently use raw_cpu_ptr() to generate the CPU's
irq_stack pointer by simply adding the percpu offset to the irq_stack
address, which is simpler in both respects.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
2017-08-08 16:28:25 +01:00
Mark Rutland ed84b4e958 arm64: move non-entry code out of .entry.text
Currently, cpu_switch_to and ret_from_fork both live in .entry.text,
though neither form the critical path for an exception entry.

In subsequent patches, we will require that code in .entry.text is part
of the critical path for exception entry, for which we can assume
certain properties (e.g. the presence of exception regs on the stack).

Neither cpu_switch_to nor ret_from_fork will meet these requirements, so
we must move them out of .entry.text. To ensure that neither are kprobed
after being moved out of .entry.text, we must explicitly blacklist them,
requiring a new NOKPROBE() asm helper.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
2017-08-08 16:28:25 +01:00
Mark Rutland 2d0e751a47 arm64: consistently use bl for C exception entry
In most cases, our exception entry assembly branches to C handlers with
a BL instruction, but in cases where we do not expect to return, we use
B instead.

While this is correct today, it means that backtraces for fatal
exceptions miss the entry assembly (as the LR is stale at the point we
call C code), while non-fatal exceptions have the entry assembly in the
LR. In subsequent patches, we will need the LR to be set in these cases
in order to backtrace reliably.

This patch updates these sites to use a BL, ensuring consistency, and
preparing for backtrace rework. An ASM_BUG() is added after each of
these new BLs, which both catches unexpected returns, and ensures that
the LR value doesn't point to another function label.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
2017-08-08 16:28:24 +01:00
Mark Rutland db44e9c5ec arm64: Add ASM_BUG()
Currently. we can only use BUG() from C code, though there are
situations where we would like an equivalent mechanism in assembly code.

This patch refactors our BUG() definition such that it can be used in
either C or assembly, in the form of a new ASM_BUG().

The refactoring requires the removal of escape sequences, such as '\n'
and '\t', but these aren't strictly necessary as we can use ';' to
terminate assembler statements.

The low-level assembly is factored out into <asm/asm-bug.h>, with
<asm/bug.h> retained as the C wrapper.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Martin <dave.martin@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
2017-08-08 16:28:13 +01:00
Pratyush Anand 1031a15929 arm64: perf: Allow more than one cycle counter to be used
Currently:
$ perf stat -e cycles:u -e cycles:k  true

 Performance counter stats for 'true':

          2,24,699      cycles:u
     <not counted>      cycles:k	(0.00%)

       0.000788087 seconds time elapsed

We can not count more than one cycle counter in one instance,because we
allow to map cycle counter into PMCCNTR_EL0 only. However, if I did not
miss anything then specification do not prohibit to use PMEVCNTR<n>_EL0
for cycle count as well.

Modify the code so that it still prefers to use PMCCNTR_EL0 for cycle
counter, however allow to use PMEVCNTR<n>_EL0 if PMCCNTR_EL0 is already
in use.

After this patch:

$ perf stat -e cycles:u -e cycles:k   true

 Performance counter stats for 'true':

          2,17,310      cycles:u
          7,40,009      cycles:k

       0.000764149 seconds time elapsed

Signed-off-by: Pratyush Anand <panand@redhat.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-08-08 14:33:13 +01:00
Longpeng(Mike) f01fbd2fad KVM: arm: implements the kvm_arch_vcpu_in_kernel()
This implements the kvm_arch_vcpu_in_kernel() for ARM, and adjusts
the calls to kvm_vcpu_on_spin().

Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-08-08 10:57:43 +02:00
Longpeng(Mike) 199b5763d3 KVM: add spinlock optimization framework
If a vcpu exits due to request a user mode spinlock, then
the spinlock-holder may be preempted in user mode or kernel mode.
(Note that not all architectures trap spin loops in user mode,
only AMD x86 and ARM/ARM64 currently do).

But if a vcpu exits in kernel mode, then the holder must be
preempted in kernel mode, so we should choose a vcpu in kernel mode
as a more likely candidate for the lock holder.

This introduces kvm_arch_vcpu_in_kernel() to decide whether the
vcpu is in kernel-mode when it's preempted.  kvm_vcpu_on_spin's
new argument says the same of the spinning VCPU.

Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-08-08 10:57:43 +02:00
Sugar Zhang d80ef50a13 arm64: dts: rockchip: add rk3328 i2s nodes
This patch add the i2s dt nodes for rk3328.

Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2017-08-07 23:29:46 +02:00
Anup Patel 63b2ff6aa6 arm64: dts: Add SBA-RAID DT nodes for Stingray SoC
This patch adds Broadcom SBA-RAID DT nodes for Stingray SoC.

The Stingray SoC has total 32 SBA-RAID FlexRM rings and it has
8 CPUs so we create 8 SBA-RAID instances (one for each CPU).
This way Linux DMAENGINE will have one SBA-RAID DMA device for
each CPU.

Signed-off-by: Anup Patel <anup.patel@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2017-08-07 10:30:14 -07:00
Anup Patel c6e9559869 arm64: dts: Add FlexRM DT nodes for Stingray
We have two instances of FlexRM on Stingray. One for SBA RAID
offload engine and another for SPU2 Crypto offload engine.

This patch adds FlexRM mailbox controller DT nodes for Stingray.

Signed-off-by: Anup Patel <anup.patel@broadcom.com>
Signed-off-by: Raveendra Padasalagi <raveendra.padasalagi@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2017-08-07 10:30:06 -07:00
Srinath Mannam 344a2e5141 arm64: dts: Add SATA DT nodes for Stingray SoC
Add DT nodes for SATA host controllers and SATA PHYs
on Stingray SoC

Signed-off-by: Srinath Mannam <srinath.mannam@broadcom.com>
Reviewed-by: Ray Jui <ray.jui@broadcom.com>
Reviewed-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2017-08-07 10:30:01 -07:00
Abhishek Shah 80e2cbc136 arm64: dts: Add DT node to enable BGMAC driver on Stingray
This patch adds DT node to enable BGMAC driver on Stingray

Signed-off-by: Abhishek Shah <abhishek.shah@broadcom.com>
Reviewed-by: Ray Jui <ray.jui@broadcom.com>
Reviewed-by: Oza Oza <oza.oza@broadcom.com>
Reviewed-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2017-08-07 10:29:53 -07:00
Anup Patel 567b3b0a5b arm64: dts: Add sp804 DT nodes for Stingray SoC
We have 8 instances of sp804 in Stingray SoC. Let's enable
it in Stingray DT.

Signed-off-by: Anup Patel <anup.patel@broadcom.com>
Reviewed-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2017-08-07 10:29:48 -07:00
Srinath Mannam fd898f75da arm64: dts: Add MDIO multiplexer DT node for Stingray
Added MDIO multiplexer iproc DT node for Stingray, which contains
the child nodes of PCIe serdes, RGMII, SATA and USB phy MDIO slaves.

Signed-off-by: Srinath Mannam <srinath.mannam@broadcom.com>
Reviewed-by: Ray Jui <ray.jui@broadcom.com>
Reviewed-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2017-08-07 10:29:07 -07:00
Velibor Markovski 5ace353397 arm64: dts: Enable stats for CCN-502 interconnect on Stingray
This patch enables stats for CCN-502 interconnect on Stingray.

Signed-off-by: Velibor Markovski <velibor.markovski@broadcom.com>
Reviewed-by: Ray Jui <ray.jui@broadcom.com>
Reviewed-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2017-08-07 10:28:53 -07:00
Catalin Marinas 11cefd5ac2 arm64: neon: Export kernel_neon_busy to loadable modules
may_use_simd() can be invoked from loadable modules and it accesses
kernel_neon_busy. Make sure that the latter is exported.

Fixes: cb84d11e16 ("arm64: neon: Remove support for nested or hardirq kernel-mode NEON")
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-07 12:36:35 +01:00
Julien Thierry 1f9b8936f3 arm64: Decode information from ESR upon mem faults
When receiving unhandled faults from the CPU, description is very sparse.
Adding information about faults decoded from ESR.

Added defines to esr.h corresponding ESR fields. Values are based on ARM
Archtecture Reference Manual (DDI 0487B.a), section D7.2.28 ESR_ELx, Exception
Syndrome Register (ELx) (pages D7-2275 to D7-2280).

New output is of the form:
[   77.818059] Mem abort info:
[   77.820826]   Exception class = DABT (current EL), IL = 32 bits
[   77.826706]   SET = 0, FnV = 0
[   77.829742]   EA = 0, S1PTW = 0
[   77.832849] Data abort info:
[   77.835713]   ISV = 0, ISS = 0x00000070
[   77.839522]   CM = 0, WnR = 1

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
[catalin.marinas@arm.com: fix "%lu" in a pr_alert() call]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-07 09:58:33 +01:00
Dave Martin 17c2895860 arm64: Abstract syscallno manipulation
The -1 "no syscall" value is written in various ways, shared with
the user ABI in some places, and generally obscure.

This patch attempts to make things a little more consistent and
readable by replacing all these uses with a single #define.  A
couple of symbolic helpers are provided to clarify the intent
further.

Because the in-syscall check in do_signal() is changed from >= 0 to
!= NO_SYSCALL by this patch, different behaviour may be observable
if syscallno is set to values less than -1 by a tracer.  However,
this is not different from the behaviour that is already observable
if a tracer sets syscallno to a value >= __NR_(compat_)syscalls.

It appears that this can cause spurious syscall restarting, but
that is not a new behaviour either, and does not appear harmful.

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-07 09:58:33 +01:00
Dave Martin 35d0e6fb4d arm64: syscallno is secretly an int, make it official
The upper 32 bits of the syscallno field in thread_struct are
handled inconsistently, being sometimes zero extended and sometimes
sign-extended.  In fact, only the lower 32 bits seem to have any
real significance for the behaviour of the code: it's been OK to
handle the upper bits inconsistently because they don't matter.

Currently, the only place I can find where those bits are
significant is in calling trace_sys_enter(), which may be
unintentional: for example, if a compat tracer attempts to cancel a
syscall by passing -1 to (COMPAT_)PTRACE_SET_SYSCALL at the
syscall-enter-stop, it will be traced as syscall 4294967295
rather than -1 as might be expected (and as occurs for a native
tracer doing the same thing).  Elsewhere, reads of syscallno cast
it to an int or truncate it.

There's also a conspicuous amount of code and casting to bodge
around the fact that although semantically an int, syscallno is
stored as a u64.

Let's not pretend any more.

In order to preserve the stp x instruction that stores the syscall
number in entry.S, this patch special-cases the layout of struct
pt_regs for big endian so that the newly 32-bit syscallno field
maps onto the low bits of the stored value.  This is not beautiful,
but benchmarking of the getpid syscall on Juno suggests indicates a
minor slowdown if the stp is split into an stp x and stp w.

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-08-07 09:58:33 +01:00
Kuninori Morimoto 8cd7b51ff5 arm64: renesas: salvator-common: avoid audio_clkout naming conflict
clock name of "audio_clkout" is used by Renesas sound driver.
This duplicated naming breaks its clock registering/unregistering.
Especially, when unbind/bind it can't handle clkout correctly.
This patch renames "audio_clkout" to "audio-clkout" to avoid
naming conflict.

Fixes: 8a8f181d2c ("arm64: renesas: salvator-x: use CS2000 as AUDIO_CLK_B")
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-08-07 09:50:10 +02:00