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Add iommus property to the MMC node for r8a779g0.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230123013448.1250991-6-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add iommus properties to the DMAC nodes for r8a779g0.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230123013448.1250991-5-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add IPMMU nodes for r8a779g0.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20230123013448.1250991-4-yoshihiro.shimoda.uh@renesas.com
[geert: Drop indices from renesas,ipmmu-main properties]
[geert: s/hsc/hc/, s/vc0/vc/]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Since IMSSTR register was undocumented on the latest datasheet and
dt-bindings of renesas,ipmmu-vmsa was updated about
the renesas,ipmmu-main property, revise the property on each cache
IPMMU node.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20230123013448.1250991-2-yoshihiro.shimoda.uh@renesas.com
[geert: Drop indices from renesas,ipmmu-main properties]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Enable CRU, CSI on RZ/G2L SMARC EVK and tie the CSI to OV5645 sensor
using Device Tree overlay. rz-smarc-cru-csi-ov5645.dtsi is created so
that RZ/G2L alike EVKs can make use of it.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230322125648.24948-3-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add CSI and CRU nodes r9a07g044 (RZ/G2L) SoC DTSI.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230322125648.24948-2-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Enable sci0 node using dt overlay and disable can{0,1}-stb-hog
nodes in DT overlay as its pins are shared with sci0 pins.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230321114753.75038-6-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add support for the 7 PWM channels provided by PWM Timers on R-Car H2,
by adding device nodes describing the PWM Timers.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/9755b3af4296060ee31c4652def639574cbbd2fb.1679330878.git.geert+renesas@glider.be
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Add support for the 4 PWM channels provided by the 16-bit Timer Pulse
Unit on R-Car H2, by adding a device node describing the TPU.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/75da1e63135a3fc8a3aaafbff7139bd5d7509be3.1679330727.git.geert+renesas@glider.be
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Enable the single I2C bus available on the Marzen development board.
As this bus contains an AK4643 codec, it must be limited to 100 kHz.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/77b87378397fd26f39c73f68e3ea465db6d38fb1.1679330016.git.geert+renesas@glider.be
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Describe the four General Purpose Switches on the Marzen development
board, so they can be used for user input and/or for wake-up from s2ram.
The GPIO block on R-Car H1 does not support triggering interrupts on
both edges of a changing input signal, hence one cannot use gpio-keys
with gpios properties. Instead, one of two alternatives needs to be
used:
1. Use gpio-keys with interrupts instead of gpios properties, at the
expense of receiving only key presses (release events will be
auto-generated),
2. Use gpio-keys-polled with gpios properties, at the expense of
making these keys unusable as wake-up sources.
As the DTS for the Marzen development board serves mainly as an example,
the approach taken is to use the first alternative for the first two
switches, and the second alternative for the last two switches.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/f834a3c397362f2424fcae6a0c0440356208b182.1679329829.git.geert+renesas@glider.be
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Add support for the 7 PWM channels provided by PWM Timers on R-Car
H1, by describing the PWM Timers and their module clock.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/71622584db692f571d542ef2dcf088ce549aed3f.1679329211.git.geert+renesas@glider.be
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Add the module clock used by the PWM Timers on the Renesas R-Car H1
(R8A7779) SoC.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/1397b517fccbe716a71cfae770512ed577730a25.1679329211.git.geert+renesas@glider.be
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Add clock-names and reset-names to RZ/G2{L,LC,UL}, RZ/V2L and
RZ/Five DMAC nodes.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230315064726.22739-2-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Despite the name, R-Car V3U is the first member of the R-Car Gen4
family. Hence update the compatible property in the CAN-FD device node
to include the family-specific compatible value for R-Car Gen4.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/9823058fa57156e88a084a4a99fc8525af1686ff.1678705389.git.geert+renesas@glider.be
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Add a device node for the I2C EEPROM which serves as external storage
for the PMIC setup.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/b52c6c21a94aa7320ac0c900f7023a5dfca76a29.1678375464.git.geert+renesas@glider.be
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Add a device node for the I2C EEPROM which serves as external storage
for the PMIC setup.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/84971f48eca0b696f592a922268af8c150d9bae3.1678375464.git.geert+renesas@glider.be
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Add a device node for the M24C01 I2C EEPROM which serves as external
storage for the Ethernet MAC address.
While at it, restore sort order (by unit address) of the devices on the
I2C bus.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/6d402b289fd20125d9f6f6b2a4f239aa1887daa6.1678375464.git.geert+renesas@glider.be
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R-Car H3 ES1.* was only available to an internal development group and
needed a lot of quirks and workarounds. These become a maintenance
burden now, so our development group decided to remove upstream support
and disable booting for this SoC. Public users only have ES2 onwards.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230307105645.5285-3-wsa+renesas@sang-engineering.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add R-Car Sound support for the White Hawk board with the
ARD-AUDIO-DA7212 external audio board, using a DT overlay.
Signed-off-by: Linh Phung <linh.phung.jy@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/87o7p5l9t7.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add sound support for R-Car V4H.
Signed-off-by: Linh Phung <linh.phung.jy@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/87pm9ll9ue.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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From R01UH0968EJ0100 Rev.1.00 HW manual the interrupt numbers for SSI
channels have been updated,
SPI 329 - SSIF0 is now marked as reserved
SPI 333 - SSIF1 is now marked as reserved
SPI 335 - SSIF2 is now marked as reserved
SPI 336 - SSIF2 is now marked as reserved
SPI 341 - SSIF3 is now marked as reserved
This patch drops the above IRQs from SoC DTSI.
Fixes: 559f2b0708c70 ("arm64: dts: renesas: r9a07g043: Add SSI{1,2,3} nodes and fillup the SSI0 stub node")
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230217185225.43310-5-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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From R01UH0936EJ0120 Rev.1.20 HW manual the interrupt numbers for SSI
channels have been updated,
SPI 329 - SSIF0 is now marked as reserved
SPI 333 - SSIF1 is now marked as reserved
SPI 335 - SSIF2 is now marked as reserved
SPI 336 - SSIF2 is now marked as reserved
SPI 341 - SSIF3 is now marked as reserved
This patch drops the above IRQs from SoC DTSI.
Fixes: cd0339ec25895c0b ("arm64: dts: renesas: r9a07g054: Add SSI{1,2,3} nodes and fillup the SSI0 stub node")
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230217185225.43310-4-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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From R01UH0914EJ0120 Rev.1.20 HW manual the interrupt numbers for SSI
channels have been updated,
SPI 329 - SSIF0 is now marked as reserved
SPI 333 - SSIF1 is now marked as reserved
SPI 335 - SSIF2 is now marked as reserved
SPI 336 - SSIF2 is now marked as reserved
SPI 341 - SSIF3 is now marked as reserved
This patch drops the above IRQs from SoC DTSI.
Fixes: 92a341315afc9 ("arm64: dts: renesas: r9a07g044: Add SSI support")
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230217185225.43310-4-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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According to the RZ/G Series, 2nd Generation Hardware User’s Manual
Rev. 1.11, the System CPU cores on RZ/G2E do not have their own power
supply, but use the common internal power supply (typical 1.03V).
Hence remove the "opp-microvolt" properties from the Operating
Performance Points table. They are optional, and unused, when none of
the CPU nodes is tied to a regulator using the "cpu-supply" property.
Fixes: 231d8908a66fa98f ("arm64: dts: renesas: r8a774c0: Add OPPs table for cpu devices")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/8348e18a011ded94e35919cd8e17c0be1f9acf2f.1676560856.git.geert+renesas@glider.be
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According to the R-Car Series, 3rd Generation Hardware User’s Manual
Rev. 2.30, the System CPU cores on R-Car E3 do not have their own power
supply, but use the common internal power supply (typical 1.03V).
Hence remove the "opp-microvolt" properties from the Operating
Performance Points table. They are optional, and unused, when none of
the CPU nodes is tied to a regulator using the "cpu-supply" property.
Fixes: dd7188eb4ed128dc ("arm64: dts: renesas: r8a77990: Add OPPs table for cpu devices")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/9232578d9d395d529f64db3333a371e31327f459.1676560856.git.geert+renesas@glider.be
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Enable the performance monitor unit for the Cortex-A55 cores on the
RZ/V2L (r9a07g054) SoC.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230206001300.28937-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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The sub-board contains two MAX96712 connected to the main-board using
I2C and CSI-2, record the connections. Also enable all nodes (VIN, CSI-2
and ISP) that are part of the downstream video capture pipeline.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230211150012.3824154-3-niklas.soderlund+renesas@ragnatech.se
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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The V4H have 16 VIN, 2 CSI-2 and 2 ISP nodes that interact with each
other for video capture. Add all nodes and record how they are
interconnected.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230211150012.3824154-2-niklas.soderlund+renesas@ragnatech.se
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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The documentation provides information about the placement of the zones,
so that can be used for more descriptive labels.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230209200735.3882-1-wsa+renesas@sang-engineering.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add device nodes for the Thermal Sensor/Chip Internal Voltage
Monitor/Core Voltage Monitor (THS/CIVM/CVM) and the various thermal
zones on the Renesas R-Car V4H (R8A779G0) SoC.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/b92a1a28afb9f75f24f0137af9f77e95d7ebaec3.1675959327.git.geert+renesas@glider.be
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Add uart0 pins in pinctrl node and update the uart0 node
to include pinctrl and uart-has-rtscts properties.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230209131422.192941-1-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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The GICv3 interrupts binding does not have a cpumask. The CPU mask only
applies to pre-GICv3. So just drop using them from GICv3 systems.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230206002136.29401-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Enable the performance monitor unit for the Cortex-A55 cores on the
RZ/G2L (r9a07g044) SoC.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230206001300.28937-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Enable the performance monitor unit for the Cortex-A55 core on the
RZ/G2UL (r9a07g043u) SoC.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230206001133.28776-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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On several R-Car Gen3(e) SoCs, multiple (up to 4) operating points in
the same cluster are marked with the "turbo-mode" property, which is
meant only for operating points beyond "Normal Mode".
Fix this by dropping the property from all operating points but the
"High Performance" one.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/866d06aec09e5a86dba11970f93a728b3e34e9f5.1675335086.git.geert+renesas@glider.be
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Add the missing clock-skew property for the GEther's Micrel KSZ9031 PHY.
Signed-off-by: Nam Nguyen <nam.nguyen.yh@renesas.com>
Signed-off-by: Phong Hoang <phong.hoang.wz@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/39ab4e92d2242e1d7e83db92f91fc6e0e7e76c47.1675334998.git.geert+renesas@glider.be
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Describe the 40 MHz Crystal Clock Oscillator providing CAN_CLK.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/0bf36a1708ad87c00455b96ebaacc63fb7305b7a.1675164686.git.geert+renesas@glider.be
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The RZ/V2M EVK comes with a slot for a uSD card, and an eMMC.
Add support for the both of them.
Please note that the pinctrl driver for RZ/V2M doesn't support
interrupts yet, therefore the card detect pin has been connected
to the SDHI IP directly in this patch.
We'll connect the card detect pin to its corresponding GPIO when
we'll have driver support for interrupts in the RZ/V2M pinctrl
driver.
Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230130191152.182826-1-fabrizio.castro.jz@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Enable confirmed-working CAN-FD channels 0 and 1 on the White-Hawk
development board:
- Channel 0 uses an NXP TJR1443AT CAN transceiver, which must be
enabled through a GPIO,
- Channels 1-7 use Microchip MCP2558FD-H/SN CAN transceivers (not
mounted for channels 4-7), which do not need explicit description,
but channels 2-3 do not seem to work.
Inspired by a patch in the BSP by Kazuya Mizuguch.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/a19d0a70aacaf4c3517a226bf32ea49db3542da4.1674500205.git.geert+renesas@glider.be
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Add device nodes for the CAN-FD interface and the related external CAN
clock on the Renesas R-Car V4H (R8A779G0) SoC.
Based on a patch in the BSP by Kazuya Mizuguch.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/6c55d0995089917216ee261a8b8cbb980c7b5304.1674500205.git.geert+renesas@glider.be
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Enable USB3 role switch on RZ/V2M EVK by linking USB3 peri node
with hd3ss3220 controller node.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230121145853.4792-13-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Enable USB3 Host, Peripheral and DRD modules on RZ/V2M EVK.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230121145853.4792-12-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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This patch add usb3 host and peripheral device node as child of usb3 drd
node to RZ/V2M SoC dtsi. The host/device needs to issue reset release on
DRD module before accessing host/device registers.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230121145853.4792-11-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Commit aa47a7c215e7 ("lib/cpumask: deprecate nr_cpumask_bits") resulted
in the cpumask operations potentially becoming hugely less efficient,
because suddenly the cpumask was always considered to be variable-sized.
The optimization was then later added back in a limited form by commit
6f9c07be9d02 ("lib/cpumask: add FORCE_NR_CPUS config option"), but that
FORCE_NR_CPUS option is not useful in a generic kernel and more of a
special case for embedded situations with fixed hardware.
Instead, just re-introduce the optimization, with some changes.
Instead of depending on CPUMASK_OFFSTACK being false, and then always
using the full constant cpumask width, this introduces three different
cpumask "sizes":
- the exact size (nr_cpumask_bits) remains identical to nr_cpu_ids.
This is used for situations where we should use the exact size.
- the "small" size (small_cpumask_bits) is the NR_CPUS constant if it
fits in a single word and the bitmap operations thus end up able
to trigger the "small_const_nbits()" optimizations.
This is used for the operations that have optimized single-word
cases that get inlined, notably the bit find and scanning functions.
- the "large" size (large_cpumask_bits) is the NR_CPUS constant if it
is an sufficiently small constant that makes simple "copy" and
"clear" operations more efficient.
This is arbitrarily set at four words or less.
As a an example of this situation, without this fixed size optimization,
cpumask_clear() will generate code like
movl nr_cpu_ids(%rip), %edx
addq $63, %rdx
shrq $3, %rdx
andl $-8, %edx
callq memset@PLT
on x86-64, because it would calculate the "exact" number of longwords
that need to be cleared.
In contrast, with this patch, using a MAX_CPU of 64 (which is quite a
reasonable value to use), the above becomes a single
movq $0,cpumask
instruction instead, because instead of caring to figure out exactly how
many CPU's the system has, it just knows that the cpumask will be a
single word and can just clear it all.
Note that this does end up tightening the rules a bit from the original
version in another way: operations that set bits in the cpumask are now
limited to the actual nr_cpu_ids limit, whereas we used to do the
nr_cpumask_bits thing almost everywhere in the cpumask code.
But if you just clear bits, or scan for bits, we can use the simpler
compile-time constants.
In the process, remove 'cpumask_complement()' and 'for_each_cpu_not()'
which were not useful, and which fundamentally have to be limited to
'nr_cpu_ids'. Better remove them now than have somebody introduce use
of them later.
Of course, on x86-64 with MAXSMP there is no sane small compile-time
constant for the cpumask sizes, and we end up using the actual CPU bits,
and will generate the above kind of horrors regardless. Please don't
use MAXSMP unless you really expect to have machines with thousands of
cores.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fix from Herbert Xu:
"Fix a regression in the caam driver"
* tag 'v6.3-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: caam - Fix edesc/iv ordering mixup
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 updates from Thomas Gleixner:
"A small set of updates for x86:
- Return -EIO instead of success when the certificate buffer for SEV
guests is not large enough
- Allow STIPB to be enabled with legacy IBSR. Legacy IBRS is cleared
on return to userspace for performance reasons, but the leaves user
space vulnerable to cross-thread attacks which STIBP prevents.
Update the documentation accordingly"
* tag 'x86-urgent-2023-03-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
virt/sev-guest: Return -EIO if certificate buffer is not large enough
Documentation/hw-vuln: Document the interaction between IBRS and STIBP
x86/speculation: Allow enabling STIBP with legacy IBRS
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq updates from Thomas Gleixner:
"A set of updates for the interrupt susbsystem:
- Prevent possible NULL pointer derefences in
irq_data_get_affinity_mask() and irq_domain_create_hierarchy()
- Take the per device MSI lock before invoking code which relies on
it being hold
- Make sure that MSI descriptors are unreferenced before freeing
them. This was overlooked when the platform MSI code was converted
to use core infrastructure and results in a fals positive warning
- Remove dead code in the MSI subsystem
- Clarify the documentation for pci_msix_free_irq()
- More kobj_type constification"
* tag 'irq-urgent-2023-03-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/msi, platform-msi: Ensure that MSI descriptors are unreferenced
genirq/msi: Drop dead domain name assignment
irqdomain: Add missing NULL pointer check in irq_domain_create_hierarchy()
genirq/irqdesc: Make kobj_type structures constant
PCI/MSI: Clarify usage of pci_msix_free_irq()
genirq/msi: Take the per-device MSI lock before validating the control structure
genirq/ipi: Fix NULL pointer deref in irq_data_get_affinity_mask()
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Pull vfs update from Al Viro:
"Adding Christian Brauner as VFS co-maintainer"
* tag 'pull-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
Adding VFS co-maintainer
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