linux-toradex.git/include/soc, branch v6.4-rc1 Linux kernel for Apalis and Colibri modules Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux 2023-04-30T00:29:39+00:00 Linus Torvalds torvalds@linux-foundation.org 2023-04-30T00:29:39+00:00 e81507acdc19d91df4121f409871f3e4e055f6c2 Pull clk updates from Stephen Boyd: "Nothing looks out of the ordinary in this batch of clk driver updates. There are a couple patches to the core clk framework, but they're all basically cleanups or debugging aids. The driver updates and new additions are dominated in the diffstat by Qualcomm and MediaTek drivers. Qualcomm gained a handful of new drivers for various SoCs, and MediaTek gained a bunch of drivers for MT8188. The MediaTek drivers are being modernized as well, so there are updates all over that vendor's clk drivers. There's also a couple other new clk drivers in here, for example the Starfive JH7110 SoC support is added. Outside of the two major SoC vendors though, we have the usual collection of non-critical fixes and cleanups to various clk drivers. It's good to see that we're getting more cleanups and modernization patches. Maybe one day we'll be able to properly split clk providers from clk consumers. Core: - Print an informational message before disabling unused clks New Drivers: - BCM63268 timer clock and reset controller - Frequency Hopping (FHCTL) on MediaTek MT6795, MT8173, MT8192 and MT8195 SoCs - Mediatek MT8188 SoC clk drivers - Clock driver for Sunplus SP7021 SoC - Clk driver support for Loongson-2 SoCs - Clock driver for Skyworks Si521xx I2C PCIe clock generators - Initial Starfive JH7110 clk/reset support - Global clock controller drivers for Qualcomm SM7150, IPQ9574, MSM8917 and IPQ5332 SoCs - GPU clock controller drivers for SM6115, SM6125, SM6375 and SA8775P SoCs Updates: - Shrink size of clk_fractional_divider a little - Convert various clk drivers to devm_of_clk_add_hw_provider() - Convert platform clk drivers to remove_new() - Converted most Mediatek clock drivers to struct platform_driver - MediaTek clock drivers can be built as modules - Reimplement Loongson-1 clk driver with DT support - Migrate socfpga clk driver to of_clk_add_hw_provider() - Support for i3c clks on Aspeed ast2600 SoCs - Add clock generic devm_clk_hw_register_gate_parent_data - Add audiomix block control for i.MX8MP - Add support for determine_rate to i.MX composite-8m - Let the LCDIF Pixel clock of i.MX8MM and i.MX8MN set parent rate - Provide clock name in error message for clk-gpr-mux on get parent failure - Drop duplicate imx_clk_mux_flags macro - Register the i.MX8MP Media Disp2 Pix clock as bus clock - Add Media LDB root clock to i.MX8MP - Make i.MX8MP nand_usdhc_bus clock as non-critical - Fix the rate table for i.MX fracn-gppll - Disable HW control for the fracn-gppll in order to be controlled by register write - Add support for interger PLL in fracn-gppll - Add mcore_booted module parameter to i.MX93 provider - Add NIC, A55 and ARM PLL clocks to i.MX93 - Fix i.MX8ULP XBAR_DIVBUS and AD_SLOW clock parents - Use "divider closest" clock type for PLL4_PFD dividers on i.MX8ULP to get more accurate clock rates - Mark the MU0_Bi and TPM5 clocks on i.MX8ULP as critical - Update some of the i.MX critical clocks flags to allow glitchless on-the-fly rate change. - Add I2C5 clock on Renesas R-Car V3H - Exynos850: Add CMU_G3D clock controller for the Mali GPU - Extract Exynos5433 (ARM64) clock controller power management code to common driver parts - Exynos850: make PMU_ALIVE_PCLK clock critical - Add Audio, thermal, camera (CSI-2), Image Signal Processor/Channel Selector (ISPCS), and video capture (VIN) clocks on Renesas R-Car V4H - Add video capture (VIN) clocks on Renesas R-Car V3H - Add Cortex-A53 System CPU (Z2) clocks on Renesas R-Car V3M and V3H - Support for Stromer Plus PLL on Qualcomm IPQ5332 - Add a missing reset to Qualcomm QCM2290 - Migrate Qualcomm IPQ4019 to clk_parent_data - Make USB GDSCs enter retention state when disabled on Qualcomm SM6375, MSM8996 and MSM8998 SoCs - Set floor rounding clk_ops for Qualcomm QCM2290 SDCC2 clk - Add two EMAC GDSCs on Qualcomm SC8280XP - Use shared rcg clk ops in Qualcomm SM6115 GCC - Park Qualcomm SM8350 PCIe PIPE clks when disabled - Add GDSCs to Qualcomm SC7280 LPASS audio clock controller - Add missing XO clocks to Qualcomm MSM8226 and MSM8974 - Convert some Qualcomm clk DT bindings to YAML - Reparenting fix for the clock supplying camera modules on Rockchip rk3399 - Mark more critical (bus-)clocks on Rockchip rk3588" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (290 commits) clk: qcom: gcc-sc8280xp: Add EMAC GDSCs clk: starfive: Delete the redundant dev_set_drvdata() in JH7110 clock drivers clk: rockchip: rk3588: make gate linked clocks critical clk: qcom: dispcc-qcm2290: Remove inexistent DSI1PHY clk clk: qcom: add the GPUCC driver for sa8775p dt-bindings: clock: qcom: describe the GPUCC clock for SA8775P clk: qcom: gcc-sm8350: fix PCIe PIPE clocks handling clk: qcom: lpassaudiocc-sc7280: Add required gdsc power domain clks in lpass_cc_sc7280_desc clk: qcom: lpasscc-sc7280: Skip qdsp6ss clock registration dt-bindings: clock: qcom,sc7280-lpasscc: Add qcom,adsp-pil-mode property clk: starfive: Avoid casting iomem pointers clk: microchip: fix potential UAF in auxdev release callback clk: qcom: rpm: Use managed `of_clk_add_hw_provider()` clk: mediatek: fhctl: Mark local variables static clk: sifive: make SiFive clk drivers depend on ARCH_ symbols clk: uniphier: Use managed `of_clk_add_hw_provider()` clk: si5351: Use managed `of_clk_add_hw_provider()` clk: si570: Use managed `of_clk_add_hw_provider()` clk: si514: Use managed `of_clk_add_hw_provider()` clk: lmk04832: Use managed `of_clk_add_hw_provider()` ... 
Pull clk updates from Stephen Boyd:
 "Nothing looks out of the ordinary in this batch of clk driver updates.

  There are a couple patches to the core clk framework, but they're all
  basically cleanups or debugging aids. The driver updates and new
  additions are dominated in the diffstat by Qualcomm and MediaTek
  drivers. Qualcomm gained a handful of new drivers for various SoCs,
  and MediaTek gained a bunch of drivers for MT8188. The MediaTek
  drivers are being modernized as well, so there are updates all over
  that vendor's clk drivers. There's also a couple other new clk drivers
  in here, for example the Starfive JH7110 SoC support is added.

  Outside of the two major SoC vendors though, we have the usual
  collection of non-critical fixes and cleanups to various clk drivers.
  It's good to see that we're getting more cleanups and modernization
  patches. Maybe one day we'll be able to properly split clk providers
  from clk consumers.

  Core:
   - Print an informational message before disabling unused clks

  New Drivers:
   - BCM63268 timer clock and reset controller
   - Frequency Hopping (FHCTL) on MediaTek MT6795, MT8173, MT8192 and
     MT8195 SoCs
   - Mediatek MT8188 SoC clk drivers
   - Clock driver for Sunplus SP7021 SoC
   - Clk driver support for Loongson-2 SoCs
   - Clock driver for Skyworks Si521xx I2C PCIe clock generators
   - Initial Starfive JH7110 clk/reset support
   - Global clock controller drivers for Qualcomm SM7150, IPQ9574,
     MSM8917 and IPQ5332 SoCs
   - GPU clock controller drivers for SM6115, SM6125, SM6375 and SA8775P
     SoCs

  Updates:
   - Shrink size of clk_fractional_divider a little
   - Convert various clk drivers to devm_of_clk_add_hw_provider()
   - Convert platform clk drivers to remove_new()
   - Converted most Mediatek clock drivers to struct platform_driver
   - MediaTek clock drivers can be built as modules
   - Reimplement Loongson-1 clk driver with DT support
   - Migrate socfpga clk driver to of_clk_add_hw_provider()
   - Support for i3c clks on Aspeed ast2600 SoCs
   - Add clock generic devm_clk_hw_register_gate_parent_data
   - Add audiomix block control for i.MX8MP
   - Add support for determine_rate to i.MX composite-8m
   - Let the LCDIF Pixel clock of i.MX8MM and i.MX8MN set parent rate
   - Provide clock name in error message for clk-gpr-mux on get parent
     failure
   - Drop duplicate imx_clk_mux_flags macro
   - Register the i.MX8MP Media Disp2 Pix clock as bus clock
   - Add Media LDB root clock to i.MX8MP
   - Make i.MX8MP nand_usdhc_bus clock as non-critical
   - Fix the rate table for i.MX fracn-gppll
   - Disable HW control for the fracn-gppll in order to be controlled by
     register write
   - Add support for interger PLL in fracn-gppll
   - Add mcore_booted module parameter to i.MX93 provider
   - Add NIC, A55 and ARM PLL clocks to i.MX93
   - Fix i.MX8ULP XBAR_DIVBUS and AD_SLOW clock parents
   - Use "divider closest" clock type for PLL4_PFD dividers on i.MX8ULP
     to get more accurate clock rates
   - Mark the MU0_Bi and TPM5 clocks on i.MX8ULP as critical
   - Update some of the i.MX critical clocks flags to allow glitchless
     on-the-fly rate change.
   - Add I2C5 clock on Renesas R-Car V3H
   - Exynos850: Add CMU_G3D clock controller for the Mali GPU
   - Extract Exynos5433 (ARM64) clock controller power management code
     to common driver parts
   - Exynos850: make PMU_ALIVE_PCLK clock critical
   - Add Audio, thermal, camera (CSI-2), Image Signal Processor/Channel
     Selector (ISPCS), and video capture (VIN) clocks on Renesas R-Car
     V4H
   - Add video capture (VIN) clocks on Renesas R-Car V3H
   - Add Cortex-A53 System CPU (Z2) clocks on Renesas R-Car V3M and V3H
   - Support for Stromer Plus PLL on Qualcomm IPQ5332
   - Add a missing reset to Qualcomm QCM2290
   - Migrate Qualcomm IPQ4019 to clk_parent_data
   - Make USB GDSCs enter retention state when disabled on Qualcomm
     SM6375, MSM8996 and MSM8998 SoCs
   - Set floor rounding clk_ops for Qualcomm QCM2290 SDCC2 clk
   - Add two EMAC GDSCs on Qualcomm SC8280XP
   - Use shared rcg clk ops in Qualcomm SM6115 GCC
   - Park Qualcomm SM8350 PCIe PIPE clks when disabled
   - Add GDSCs to Qualcomm SC7280 LPASS audio clock controller
   - Add missing XO clocks to Qualcomm MSM8226 and MSM8974
   - Convert some Qualcomm clk DT bindings to YAML
   - Reparenting fix for the clock supplying camera modules on Rockchip
     rk3399
   - Mark more critical (bus-)clocks on Rockchip rk3588"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (290 commits)
  clk: qcom: gcc-sc8280xp: Add EMAC GDSCs
  clk: starfive: Delete the redundant dev_set_drvdata() in JH7110 clock drivers
  clk: rockchip: rk3588: make gate linked clocks critical
  clk: qcom: dispcc-qcm2290: Remove inexistent DSI1PHY clk
  clk: qcom: add the GPUCC driver for sa8775p
  dt-bindings: clock: qcom: describe the GPUCC clock for SA8775P
  clk: qcom: gcc-sm8350: fix PCIe PIPE clocks handling
  clk: qcom: lpassaudiocc-sc7280: Add required gdsc power domain clks in lpass_cc_sc7280_desc
  clk: qcom: lpasscc-sc7280: Skip qdsp6ss clock registration
  dt-bindings: clock: qcom,sc7280-lpasscc: Add qcom,adsp-pil-mode property
  clk: starfive: Avoid casting iomem pointers
  clk: microchip: fix potential UAF in auxdev release callback
  clk: qcom: rpm: Use managed `of_clk_add_hw_provider()`
  clk: mediatek: fhctl: Mark local variables static
  clk: sifive: make SiFive clk drivers depend on ARCH_ symbols
  clk: uniphier: Use managed `of_clk_add_hw_provider()`
  clk: si5351: Use managed `of_clk_add_hw_provider()`
  clk: si570: Use managed `of_clk_add_hw_provider()`
  clk: si514: Use managed `of_clk_add_hw_provider()`
  clk: lmk04832: Use managed `of_clk_add_hw_provider()`
  ...
Merge tag 'timers-core-2023-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2023-04-29T17:24:30+00:00 Linus Torvalds torvalds@linux-foundation.org 2023-04-29T17:24:30+00:00 7d8d20191c8557584269b6ba8eae5409564dc84b Pull more timer updates from Thomas Gleixner: "Timekeeping and clocksource/event driver updates the second batch: - A trivial documentation fix in the timekeeping core - A really boring set of small fixes, enhancements and cleanups in the drivers code. No new clocksource/clockevent drivers for a change" * tag 'timers-core-2023-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: timekeeping: Fix references to nonexistent ktime_get_fast_ns() dt-bindings: timer: rockchip: Add rk3588 compatible dt-bindings: timer: rockchip: Drop superfluous rk3288 compatible clocksource/drivers/ti: Use of_property_read_bool() for boolean properties clocksource/drivers/timer-ti-dm: Fix finding alwon timer clocksource/drivers/davinci: Fix memory leak in davinci_timer_register when init fails clocksource/drivers/stm32-lp: Drop of_match_ptr for ID table clocksource/drivers/timer-ti-dm: Convert to platform remove callback returning void clocksource/drivers/timer-tegra186: Convert to platform remove callback returning void clocksource/drivers/timer-ti-dm: Improve error message in .remove clocksource/drivers/timer-stm32-lp: Mark driver as non-removable clocksource/drivers/sh_mtu2: Mark driver as non-removable clocksource/drivers/timer-ti-dm: Use of_address_to_resource() clocksource/drivers/timer-imx-gpt: Remove non-DT function clocksource/drivers/timer-mediatek: Split out CPUXGPT timers clocksource/drivers/exynos_mct: Explicitly return 0 for shared timer 
Pull more timer updates from Thomas Gleixner:
 "Timekeeping and clocksource/event driver updates the second batch:

   - A trivial documentation fix in the timekeeping core

   - A really boring set of small fixes, enhancements and cleanups in
     the drivers code. No new clocksource/clockevent drivers for a
     change"

* tag 'timers-core-2023-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timekeeping: Fix references to nonexistent ktime_get_fast_ns()
  dt-bindings: timer: rockchip: Add rk3588 compatible
  dt-bindings: timer: rockchip: Drop superfluous rk3288 compatible
  clocksource/drivers/ti: Use of_property_read_bool() for boolean properties
  clocksource/drivers/timer-ti-dm: Fix finding alwon timer
  clocksource/drivers/davinci: Fix memory leak in davinci_timer_register when init fails
  clocksource/drivers/stm32-lp: Drop of_match_ptr for ID table
  clocksource/drivers/timer-ti-dm: Convert to platform remove callback returning void
  clocksource/drivers/timer-tegra186: Convert to platform remove callback returning void
  clocksource/drivers/timer-ti-dm: Improve error message in .remove
  clocksource/drivers/timer-stm32-lp: Mark driver as non-removable
  clocksource/drivers/sh_mtu2: Mark driver as non-removable
  clocksource/drivers/timer-ti-dm: Use of_address_to_resource()
  clocksource/drivers/timer-imx-gpt: Remove non-DT function
  clocksource/drivers/timer-mediatek: Split out CPUXGPT timers
  clocksource/drivers/exynos_mct: Explicitly return 0 for shared timer
Merge tag 'sound-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound 2023-04-27T17:58:37+00:00 Linus Torvalds torvalds@linux-foundation.org 2023-04-27T17:58:37+00:00 1c15ca4e4efaddb78f83eed31eeee34c522c3ae2 Pull sound updates from Takashi Iwai: "At this time, it's an interesting mixture of changes for both old and new stuff. Majority of changes are about ASoC (lots of systematic changes for converting remove callbacks to void, and cleanups), while we got the fixes and the enhancements of very old PCI cards, too. Here are some highlights: ALSA/ASoC Core: - Continued effort of more ASoC core cleanups - Minor improvements for XRUN handling in indirect PCM helpers - Code refactoring of PCM core code ASoC: - Continued feature and simplification work on SOF, including addition of a no-DSP mode for bringup, HDA MLink and extensions to the IPC4 protocol - Hibernation support for CS35L45 - More DT binding conversions - Support for Cirrus Logic CS35L56, Freescale QMC, Maxim MAX98363, nVidia systems with MAX9809x and RT5631, Realtek RT712, Renesas R-Car Gen4, Rockchip RK3588 and TI TAS5733 ALSA: - Lots of works for legacy emu10k1 and ymfpci PCI drivers - PCM kselftest fixes and enhancements" * tag 'sound-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (586 commits) ALSA: emu10k1: use high-level I/O in set_filterQ() ALSA: emu10k1: use high-level I/O functions also during init ALSA: emu10k1: fix error handling in snd_audigy_i2c_volume_put() ALSA: emu10k1: don't stop DSP in _snd_emu10k1_{,audigy_}init_efx() ALSA: emu10k1: fix SNDRV_EMU10K1_IOCTL_SINGLE_STEP ALSA: emu10k1: skip Sound Blaster-specific hacks for E-MU cards ALSA: emu10k1: fixup DSP defines ALSA: emu10k1: pull in some register definitions from kX-project ALSA: emu10k1: remove some bogus defines ALSA: emu10k1: eliminate some unused defines ALSA: emu10k1: fix lineup of EMU_HANA_* defines ALSA: emu10k1: comment updates ALSA: emu10k1: fix snd_emu1010_fpga_read() input masking for rev2 cards ALSA: emu10k1: remove unused emu->pcm_playback_efx_substream field ALSA: emu10k1: remove unused `resume` parameter from snd_emu10k1_init() ALSA: emu10k1: minor optimizations ALSA: emu10k1: remove remaining cruft from snd_emu10k1_emu1010_init() ALSA: emu10k1: remove apparently pointless EMU_HANA_OPTION_CARDS reads ALSA: emu10k1: remove apparently pointless FPGA reads ALSA: emu10k1: stop doing weird things with HCFG in snd_emu10k1_emu1010_init() ... 
Pull sound updates from Takashi Iwai:
 "At this time, it's an interesting mixture of changes for both old and
  new stuff. Majority of changes are about ASoC (lots of systematic
  changes for converting remove callbacks to void, and cleanups), while
  we got the fixes and the enhancements of very old PCI cards, too.

  Here are some highlights:

  ALSA/ASoC Core:
   - Continued effort of more ASoC core cleanups
   - Minor improvements for XRUN handling in indirect PCM helpers
   - Code refactoring of PCM core code

  ASoC:
   - Continued feature and simplification work on SOF, including
     addition of a no-DSP mode for bringup, HDA MLink and extensions to
     the IPC4 protocol
   - Hibernation support for CS35L45
   - More DT binding conversions
   - Support for Cirrus Logic CS35L56, Freescale QMC, Maxim MAX98363,
     nVidia systems with MAX9809x and RT5631, Realtek RT712, Renesas
     R-Car Gen4, Rockchip RK3588 and TI TAS5733

  ALSA:
   - Lots of works for legacy emu10k1 and ymfpci PCI drivers
   - PCM kselftest fixes and enhancements"

* tag 'sound-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (586 commits)
  ALSA: emu10k1: use high-level I/O in set_filterQ()
  ALSA: emu10k1: use high-level I/O functions also during init
  ALSA: emu10k1: fix error handling in snd_audigy_i2c_volume_put()
  ALSA: emu10k1: don't stop DSP in _snd_emu10k1_{,audigy_}init_efx()
  ALSA: emu10k1: fix SNDRV_EMU10K1_IOCTL_SINGLE_STEP
  ALSA: emu10k1: skip Sound Blaster-specific hacks for E-MU cards
  ALSA: emu10k1: fixup DSP defines
  ALSA: emu10k1: pull in some register definitions from kX-project
  ALSA: emu10k1: remove some bogus defines
  ALSA: emu10k1: eliminate some unused defines
  ALSA: emu10k1: fix lineup of EMU_HANA_* defines
  ALSA: emu10k1: comment updates
  ALSA: emu10k1: fix snd_emu1010_fpga_read() input masking for rev2 cards
  ALSA: emu10k1: remove unused emu->pcm_playback_efx_substream field
  ALSA: emu10k1: remove unused `resume` parameter from snd_emu10k1_init()
  ALSA: emu10k1: minor optimizations
  ALSA: emu10k1: remove remaining cruft from snd_emu10k1_emu1010_init()
  ALSA: emu10k1: remove apparently pointless EMU_HANA_OPTION_CARDS reads
  ALSA: emu10k1: remove apparently pointless FPGA reads
  ALSA: emu10k1: stop doing weird things with HCFG in snd_emu10k1_emu1010_init()
  ...
Merge tag 'net-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2023-04-26T23:07:23+00:00 Linus Torvalds torvalds@linux-foundation.org 2023-04-26T23:07:23+00:00 6e98b09da931a00bf4e0477d0fa52748bf28fcce Pull networking updates from Paolo Abeni: "Core: - Introduce a config option to tweak MAX_SKB_FRAGS. Increasing the default value allows for better BIG TCP performances - Reduce compound page head access for zero-copy data transfers - RPS/RFS improvements, avoiding unneeded NET_RX_SOFTIRQ when possible - Threaded NAPI improvements, adding defer skb free support and unneeded softirq avoidance - Address dst_entry reference count scalability issues, via false sharing avoidance and optimize refcount tracking - Add lockless accesses annotation to sk_err[_soft] - Optimize again the skb struct layout - Extends the skb drop reasons to make it usable by multiple subsystems - Better const qualifier awareness for socket casts BPF: - Add skb and XDP typed dynptrs which allow BPF programs for more ergonomic and less brittle iteration through data and variable-sized accesses - Add a new BPF netfilter program type and minimal support to hook BPF programs to netfilter hooks such as prerouting or forward - Add more precise memory usage reporting for all BPF map types - Adds support for using {FOU,GUE} encap with an ipip device operating in collect_md mode and add a set of BPF kfuncs for controlling encap params - Allow BPF programs to detect at load time whether a particular kfunc exists or not, and also add support for this in light skeleton - Bigger batch of BPF verifier improvements to prepare for upcoming BPF open-coded iterators allowing for less restrictive looping capabilities - Rework RCU enforcement in the verifier, add kptr_rcu and enforce BPF programs to NULL-check before passing such pointers into kfunc - Add support for kptrs in percpu hashmaps, percpu LRU hashmaps and in local storage maps - Enable RCU semantics for task BPF kptrs and allow referenced kptr tasks to be stored in BPF maps - Add support for refcounted local kptrs to the verifier for allowing shared ownership, useful for adding a node to both the BPF list and rbtree - Add BPF verifier support for ST instructions in convert_ctx_access() which will help new -mcpu=v4 clang flag to start emitting them - Add ARM32 USDT support to libbpf - Improve bpftool's visual program dump which produces the control flow graph in a DOT format by adding C source inline annotations Protocols: - IPv4: Allow adding to IPv4 address a 'protocol' tag. Such value indicates the provenance of the IP address - IPv6: optimize route lookup, dropping unneeded R/W lock acquisition - Add the handshake upcall mechanism, allowing the user-space to implement generic TLS handshake on kernel's behalf - Bridge: support per-{Port, VLAN} neighbor suppression, increasing resilience to nodes failures - SCTP: add support for Fair Capacity and Weighted Fair Queueing schedulers - MPTCP: delay first subflow allocation up to its first usage. This will allow for later better LSM interaction - xfrm: Remove inner/outer modes from input/output path. These are not needed anymore - WiFi: - reduced neighbor report (RNR) handling for AP mode - HW timestamping support - support for randomized auth/deauth TA for PASN privacy - per-link debugfs for multi-link - TC offload support for mac80211 drivers - mac80211 mesh fast-xmit and fast-rx support - enable Wi-Fi 7 (EHT) mesh support Netfilter: - Add nf_tables 'brouting' support, to force a packet to be routed instead of being bridged - Update bridge netfilter and ovs conntrack helpers to handle IPv6 Jumbo packets properly, i.e. fetch the packet length from hop-by-hop extension header. This is needed for BIT TCP support - The iptables 32bit compat interface isn't compiled in by default anymore - Move ip(6)tables builtin icmp matches to the udptcp one. This has the advantage that icmp/icmpv6 match doesn't load the iptables/ip6tables modules anymore when iptables-nft is used - Extended netlink error report for netdevice in flowtables and netdev/chains. Allow for incrementally add/delete devices to netdev basechain. Allow to create netdev chain without device Driver API: - Remove redundant Device Control Error Reporting Enable, as PCI core has already error reporting enabled at enumeration time - Move Multicast DB netlink handlers to core, allowing devices other then bridge to use them - Allow the page_pool to directly recycle the pages from safely localized NAPI - Implement lockless TX queue stop/wake combo macros, allowing for further code de-duplication and sanitization - Add YNL support for user headers and struct attrs - Add partial YNL specification for devlink - Add partial YNL specification for ethtool - Add tc-mqprio and tc-taprio support for preemptible traffic classes - Add tx push buf len param to ethtool, specifies the maximum number of bytes of a transmitted packet a driver can push directly to the underlying device - Add basic LED support for switch/phy - Add NAPI documentation, stop relaying on external links - Convert dsa_master_ioctl() to netdev notifier. This is a preparatory work to make the hardware timestamping layer selectable by user space - Add transceiver support and improve the error messages for CAN-FD controllers New hardware / drivers: - Ethernet: - AMD/Pensando core device support - MediaTek MT7981 SoC - MediaTek MT7988 SoC - Broadcom BCM53134 embedded switch - Texas Instruments CPSW9G ethernet switch - Qualcomm EMAC3 DWMAC ethernet - StarFive JH7110 SoC - NXP CBTX ethernet PHY - WiFi: - Apple M1 Pro/Max devices - RealTek rtl8710bu/rtl8188gu - RealTek rtl8822bs, rtl8822cs and rtl8821cs SDIO chipset - Bluetooth: - Realtek RTL8821CS, RTL8851B, RTL8852BS - Mediatek MT7663, MT7922 - NXP w8997 - Actions Semi ATS2851 - QTI WCN6855 - Marvell 88W8997 - Can: - STMicroelectronics bxcan stm32f429 Drivers: - Ethernet NICs: - Intel (1G, icg): - add tracking and reporting of QBV config errors - add support for configuring max SDU for each Tx queue - Intel (100G, ice): - refactor mailbox overflow detection to support Scalable IOV - GNSS interface optimization - Intel (i40e): - support XDP multi-buffer - nVidia/Mellanox: - add the support for linux bridge multicast offload - enable TC offload for egress and engress MACVLAN over bond - add support for VxLAN GBP encap/decap flows offload - extend packet offload to fully support libreswan - support tunnel mode in mlx5 IPsec packet offload - extend XDP multi-buffer support - support MACsec VLAN offload - add support for dynamic msix vectors allocation - drop RX page_cache and fully use page_pool - implement thermal zone to report NIC temperature - Netronome/Corigine: - add support for multi-zone conntrack offload - Solarflare/Xilinx: - support offloading TC VLAN push/pop actions to the MAE - support TC decap rules - support unicast PTP - Other NICs: - Broadcom (bnxt): enforce software based freq adjustments only on shared PHC NIC - RealTek (r8169): refactor to addess ASPM issues during NAPI poll - Micrel (lan8841): add support for PTP_PF_PEROUT - Cadence (macb): enable PTP unicast - Engleder (tsnep): add XDP socket zero-copy support - virtio-net: implement exact header length guest feature - veth: add page_pool support for page recycling - vxlan: add MDB data path support - gve: add XDP support for GQI-QPL format - geneve: accept every ethertype - macvlan: allow some packets to bypass broadcast queue - mana: add support for jumbo frame - Ethernet high-speed switches: - Microchip (sparx5): Add support for TC flower templates - Ethernet embedded switches: - Broadcom (b54): - configure 6318 and 63268 RGMII ports - Marvell (mv88e6xxx): - faster C45 bus scan - Microchip: - lan966x: - add support for IS1 VCAP - better TX/RX from/to CPU performances - ksz9477: add ETS Qdisc support - ksz8: enhance static MAC table operations and error handling - sama7g5: add PTP capability - NXP (ocelot): - add support for external ports - add support for preemptible traffic classes - Texas Instruments: - add CPSWxG SGMII support for J7200 and J721E - Intel WiFi (iwlwifi): - preparation for Wi-Fi 7 EHT and multi-link support - EHT (Wi-Fi 7) sniffer support - hardware timestamping support for some devices/firwmares - TX beacon protection on newer hardware - Qualcomm 802.11ax WiFi (ath11k): - MU-MIMO parameters support - ack signal support for management packets - RealTek WiFi (rtw88): - SDIO bus support - better support for some SDIO devices (e.g. MAC address from efuse) - RealTek WiFi (rtw89): - HW scan support for 8852b - better support for 6 GHz scanning - support for various newer firmware APIs - framework firmware backwards compatibility - MediaTek WiFi (mt76): - P2P support - mesh A-MSDU support - EHT (Wi-Fi 7) support - coredump support" * tag 'net-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2078 commits) net: phy: hide the PHYLIB_LEDS knob net: phy: marvell-88x2222: remove unnecessary (void*) conversions tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp. net: amd: Fix link leak when verifying config failed net: phy: marvell: Fix inconsistent indenting in led_blink_set lan966x: Don't use xdp_frame when action is XDP_TX tsnep: Add XDP socket zero-copy TX support tsnep: Add XDP socket zero-copy RX support tsnep: Move skb receive action to separate function tsnep: Add functions for queue enable/disable tsnep: Rework TX/RX queue initialization tsnep: Replace modulo operation with mask net: phy: dp83867: Add led_brightness_set support net: phy: Fix reading LED reg property drivers: nfc: nfcsim: remove return value check of `dev_dir` net: phy: dp83867: Remove unnecessary (void*) conversions net: ethtool: coalesce: try to make user settings stick twice net: mana: Check if netdev/napi_alloc_frag returns single page net: mana: Rename mana_refill_rxoob and remove some empty lines net: veth: add page_pool stats ... 
Pull networking updates from Paolo Abeni:
 "Core:

   - Introduce a config option to tweak MAX_SKB_FRAGS. Increasing the
     default value allows for better BIG TCP performances

   - Reduce compound page head access for zero-copy data transfers

   - RPS/RFS improvements, avoiding unneeded NET_RX_SOFTIRQ when
     possible

   - Threaded NAPI improvements, adding defer skb free support and
     unneeded softirq avoidance

   - Address dst_entry reference count scalability issues, via false
     sharing avoidance and optimize refcount tracking

   - Add lockless accesses annotation to sk_err[_soft]

   - Optimize again the skb struct layout

   - Extends the skb drop reasons to make it usable by multiple
     subsystems

   - Better const qualifier awareness for socket casts

  BPF:

   - Add skb and XDP typed dynptrs which allow BPF programs for more
     ergonomic and less brittle iteration through data and
     variable-sized accesses

   - Add a new BPF netfilter program type and minimal support to hook
     BPF programs to netfilter hooks such as prerouting or forward

   - Add more precise memory usage reporting for all BPF map types

   - Adds support for using {FOU,GUE} encap with an ipip device
     operating in collect_md mode and add a set of BPF kfuncs for
     controlling encap params

   - Allow BPF programs to detect at load time whether a particular
     kfunc exists or not, and also add support for this in light
     skeleton

   - Bigger batch of BPF verifier improvements to prepare for upcoming
     BPF open-coded iterators allowing for less restrictive looping
     capabilities

   - Rework RCU enforcement in the verifier, add kptr_rcu and enforce
     BPF programs to NULL-check before passing such pointers into kfunc

   - Add support for kptrs in percpu hashmaps, percpu LRU hashmaps and
     in local storage maps

   - Enable RCU semantics for task BPF kptrs and allow referenced kptr
     tasks to be stored in BPF maps

   - Add support for refcounted local kptrs to the verifier for allowing
     shared ownership, useful for adding a node to both the BPF list and
     rbtree

   - Add BPF verifier support for ST instructions in
     convert_ctx_access() which will help new -mcpu=v4 clang flag to
     start emitting them

   - Add ARM32 USDT support to libbpf

   - Improve bpftool's visual program dump which produces the control
     flow graph in a DOT format by adding C source inline annotations

  Protocols:

   - IPv4: Allow adding to IPv4 address a 'protocol' tag. Such value
     indicates the provenance of the IP address

   - IPv6: optimize route lookup, dropping unneeded R/W lock acquisition

   - Add the handshake upcall mechanism, allowing the user-space to
     implement generic TLS handshake on kernel's behalf

   - Bridge: support per-{Port, VLAN} neighbor suppression, increasing
     resilience to nodes failures

   - SCTP: add support for Fair Capacity and Weighted Fair Queueing
     schedulers

   - MPTCP: delay first subflow allocation up to its first usage. This
     will allow for later better LSM interaction

   - xfrm: Remove inner/outer modes from input/output path. These are
     not needed anymore

   - WiFi:
      - reduced neighbor report (RNR) handling for AP mode
      - HW timestamping support
      - support for randomized auth/deauth TA for PASN privacy
      - per-link debugfs for multi-link
      - TC offload support for mac80211 drivers
      - mac80211 mesh fast-xmit and fast-rx support
      - enable Wi-Fi 7 (EHT) mesh support

  Netfilter:

   - Add nf_tables 'brouting' support, to force a packet to be routed
     instead of being bridged

   - Update bridge netfilter and ovs conntrack helpers to handle IPv6
     Jumbo packets properly, i.e. fetch the packet length from
     hop-by-hop extension header. This is needed for BIT TCP support

   - The iptables 32bit compat interface isn't compiled in by default
     anymore

   - Move ip(6)tables builtin icmp matches to the udptcp one. This has
     the advantage that icmp/icmpv6 match doesn't load the
     iptables/ip6tables modules anymore when iptables-nft is used

   - Extended netlink error report for netdevice in flowtables and
     netdev/chains. Allow for incrementally add/delete devices to netdev
     basechain. Allow to create netdev chain without device

  Driver API:

   - Remove redundant Device Control Error Reporting Enable, as PCI core
     has already error reporting enabled at enumeration time

   - Move Multicast DB netlink handlers to core, allowing devices other
     then bridge to use them

   - Allow the page_pool to directly recycle the pages from safely
     localized NAPI

   - Implement lockless TX queue stop/wake combo macros, allowing for
     further code de-duplication and sanitization

   - Add YNL support for user headers and struct attrs

   - Add partial YNL specification for devlink

   - Add partial YNL specification for ethtool

   - Add tc-mqprio and tc-taprio support for preemptible traffic classes

   - Add tx push buf len param to ethtool, specifies the maximum number
     of bytes of a transmitted packet a driver can push directly to the
     underlying device

   - Add basic LED support for switch/phy

   - Add NAPI documentation, stop relaying on external links

   - Convert dsa_master_ioctl() to netdev notifier. This is a
     preparatory work to make the hardware timestamping layer selectable
     by user space

   - Add transceiver support and improve the error messages for CAN-FD
     controllers

  New hardware / drivers:

   - Ethernet:
      - AMD/Pensando core device support
      - MediaTek MT7981 SoC
      - MediaTek MT7988 SoC
      - Broadcom BCM53134 embedded switch
      - Texas Instruments CPSW9G ethernet switch
      - Qualcomm EMAC3 DWMAC ethernet
      - StarFive JH7110 SoC
      - NXP CBTX ethernet PHY

   - WiFi:
      - Apple M1 Pro/Max devices
      - RealTek rtl8710bu/rtl8188gu
      - RealTek rtl8822bs, rtl8822cs and rtl8821cs SDIO chipset

   - Bluetooth:
      - Realtek RTL8821CS, RTL8851B, RTL8852BS
      - Mediatek MT7663, MT7922
      - NXP w8997
      - Actions Semi ATS2851
      - QTI WCN6855
      - Marvell 88W8997

   - Can:
      - STMicroelectronics bxcan stm32f429

  Drivers:

   - Ethernet NICs:
      - Intel (1G, icg):
         - add tracking and reporting of QBV config errors
         - add support for configuring max SDU for each Tx queue
      - Intel (100G, ice):
         - refactor mailbox overflow detection to support Scalable IOV
         - GNSS interface optimization
      - Intel (i40e):
         - support XDP multi-buffer
      - nVidia/Mellanox:
         - add the support for linux bridge multicast offload
         - enable TC offload for egress and engress MACVLAN over bond
         - add support for VxLAN GBP encap/decap flows offload
         - extend packet offload to fully support libreswan
         - support tunnel mode in mlx5 IPsec packet offload
         - extend XDP multi-buffer support
         - support MACsec VLAN offload
         - add support for dynamic msix vectors allocation
         - drop RX page_cache and fully use page_pool
         - implement thermal zone to report NIC temperature
      - Netronome/Corigine:
         - add support for multi-zone conntrack offload
      - Solarflare/Xilinx:
         - support offloading TC VLAN push/pop actions to the MAE
         - support TC decap rules
         - support unicast PTP

   - Other NICs:
      - Broadcom (bnxt): enforce software based freq adjustments only on
        shared PHC NIC
      - RealTek (r8169): refactor to addess ASPM issues during NAPI poll
      - Micrel (lan8841): add support for PTP_PF_PEROUT
      - Cadence (macb): enable PTP unicast
      - Engleder (tsnep): add XDP socket zero-copy support
      - virtio-net: implement exact header length guest feature
      - veth: add page_pool support for page recycling
      - vxlan: add MDB data path support
      - gve: add XDP support for GQI-QPL format
      - geneve: accept every ethertype
      - macvlan: allow some packets to bypass broadcast queue
      - mana: add support for jumbo frame

   - Ethernet high-speed switches:
      - Microchip (sparx5): Add support for TC flower templates

   - Ethernet embedded switches:
      - Broadcom (b54):
         - configure 6318 and 63268 RGMII ports
      - Marvell (mv88e6xxx):
         - faster C45 bus scan
      - Microchip:
         - lan966x:
            - add support for IS1 VCAP
            - better TX/RX from/to CPU performances
         - ksz9477: add ETS Qdisc support
         - ksz8: enhance static MAC table operations and error handling
         - sama7g5: add PTP capability
      - NXP (ocelot):
         - add support for external ports
         - add support for preemptible traffic classes
      - Texas Instruments:
         - add CPSWxG SGMII support for J7200 and J721E

   - Intel WiFi (iwlwifi):
      - preparation for Wi-Fi 7 EHT and multi-link support
      - EHT (Wi-Fi 7) sniffer support
      - hardware timestamping support for some devices/firwmares
      - TX beacon protection on newer hardware

   - Qualcomm 802.11ax WiFi (ath11k):
      - MU-MIMO parameters support
      - ack signal support for management packets

   - RealTek WiFi (rtw88):
      - SDIO bus support
      - better support for some SDIO devices (e.g. MAC address from
        efuse)

   - RealTek WiFi (rtw89):
      - HW scan support for 8852b
      - better support for 6 GHz scanning
      - support for various newer firmware APIs
      - framework firmware backwards compatibility

   - MediaTek WiFi (mt76):
      - P2P support
      - mesh A-MSDU support
      - EHT (Wi-Fi 7) support
      - coredump support"

* tag 'net-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2078 commits)
  net: phy: hide the PHYLIB_LEDS knob
  net: phy: marvell-88x2222: remove unnecessary (void*) conversions
  tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp.
  net: amd: Fix link leak when verifying config failed
  net: phy: marvell: Fix inconsistent indenting in led_blink_set
  lan966x: Don't use xdp_frame when action is XDP_TX
  tsnep: Add XDP socket zero-copy TX support
  tsnep: Add XDP socket zero-copy RX support
  tsnep: Move skb receive action to separate function
  tsnep: Add functions for queue enable/disable
  tsnep: Rework TX/RX queue initialization
  tsnep: Replace modulo operation with mask
  net: phy: dp83867: Add led_brightness_set support
  net: phy: Fix reading LED reg property
  drivers: nfc: nfcsim: remove return value check of `dev_dir`
  net: phy: dp83867: Remove unnecessary (void*) conversions
  net: ethtool: coalesce: try to make user settings stick twice
  net: mana: Check if netdev/napi_alloc_frag returns single page
  net: mana: Rename mana_refill_rxoob and remove some empty lines
  net: veth: add page_pool stats
  ...
clocksource/drivers/timer-imx-gpt: Remove non-DT function 2023-04-24T14:56:13+00:00 Fabio Estevam festevam@denx.de 2023-03-07T12:43:13+00:00 f68a40ee4732731f149961abab27a45b6c11f413 mxc_timer_init() was originally only used by non-DT i.MX platforms. i.MX has already been converted to be a DT-only platform. Remove the unused mxc_timer_init() function. Signed-off-by: Fabio Estevam <festevam@denx.de> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20230307124313.708255-1-festevam@denx.de 
mxc_timer_init() was originally only used by non-DT i.MX platforms.

i.MX has already been converted to be a DT-only platform.

Remove the unused mxc_timer_init() function.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20230307124313.708255-1-festevam@denx.de
net: mscc: ocelot: add support for preemptible traffic classes 2023-04-18T02:01:19+00:00 Vladimir Oltean vladimir.oltean@nxp.com 2023-04-15T17:05:51+00:00 403ffc2c34de5297d007e0e169bf022094d444c2 In order to not transmit (preemptible) frames which will be received by the link partner as corrupted (because it doesn't support FP), the hardware requires the driver to program the QSYS_PREEMPTION_CFG_P_QUEUES register only after the MAC Merge layer becomes active (verification succeeds, or was disabled). There are some cases when FP is known (through experimentation) to be broken. Give priority to FP over cut-through switching, and disable FP for known broken link modes. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
In order to not transmit (preemptible) frames which will be received by
the link partner as corrupted (because it doesn't support FP), the
hardware requires the driver to program the QSYS_PREEMPTION_CFG_P_QUEUES
register only after the MAC Merge layer becomes active (verification
succeeds, or was disabled).

There are some cases when FP is known (through experimentation) to be
broken. Give priority to FP over cut-through switching, and disable FP
for known broken link modes.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net: mscc: ocelot: add support for mqprio offload 2023-04-18T02:01:19+00:00 Vladimir Oltean vladimir.oltean@nxp.com 2023-04-15T17:05:49+00:00 aac80140dc31963d818a65a522c2e2da81979857 This doesn't apply anything to hardware and in general doesn't do anything that the software variant doesn't do, except for checking that there isn't more than 1 TXQ per TC (TXQs for a DSA switch are a dubious concept anyway). The reason we add this is to be able to parse one more field added to struct tc_mqprio_qopt_offload, namely preemptible_tcs. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Ferenc Fejes <fejes@inf.elte.hu> Reviewed-by: Simon Horman <simon.horman@corigine.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
This doesn't apply anything to hardware and in general doesn't do
anything that the software variant doesn't do, except for checking that
there isn't more than 1 TXQ per TC (TXQs for a DSA switch are a dubious
concept anyway). The reason we add this is to be able to parse one more
field added to struct tc_mqprio_qopt_offload, namely preemptible_tcs.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ferenc Fejes <fejes@inf.elte.hu>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net: mscc: ocelot: optimize ocelot_mm_irq() 2023-04-18T02:01:18+00:00 Vladimir Oltean vladimir.oltean@nxp.com 2023-04-15T17:05:47+00:00 7bf4a5b071e59f48de8d39dfde07a3a65e7f6488 The MAC Merge IRQ of all ports is shared with the PTP TX timestamp IRQ of all ports, which means that currently, when a PTP TX timestamp is generated, felix_irq_handler() also polls for the MAC Merge layer status of all ports, looking for changes. This makes the kernel do more work, and under certain circumstances may make ptp4l require a tx_timestamp_timeout argument higher than before. Changes to the MAC Merge layer status are only to be expected under certain conditions - its TX direction needs to be enabled - so we can check early if that is the case, and omit register access otherwise. Make ocelot_mm_update_port_status() skip register access if mm->tx_enabled is unset, and also call it once more, outside IRQ context, from ocelot_port_set_mm(), when mm->tx_enabled transitions from true to false, because an IRQ is also expected in that case. Also, a port may have its MAC Merge layer enabled but it may not have generated the interrupt. In that case, there's no point in writing to DEV_MM_STATUS to acknowledge that IRQ. We can reduce the number of register writes per port with MM enabled by keeping an "ack" variable which writes the "write-one-to-clear" bits. Those are 3 in number: PRMPT_ACTIVE_STICKY, UNEXP_RX_PFRM_STICKY and UNEXP_TX_PFRM_STICKY. The other fields in DEV_MM_STATUS are read-only and it doesn't matter what is written to them, so writing zero is just fine. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
The MAC Merge IRQ of all ports is shared with the PTP TX timestamp IRQ
of all ports, which means that currently, when a PTP TX timestamp is
generated, felix_irq_handler() also polls for the MAC Merge layer status
of all ports, looking for changes. This makes the kernel do more work,
and under certain circumstances may make ptp4l require a
tx_timestamp_timeout argument higher than before.

Changes to the MAC Merge layer status are only to be expected under
certain conditions - its TX direction needs to be enabled - so we can
check early if that is the case, and omit register access otherwise.

Make ocelot_mm_update_port_status() skip register access if
mm->tx_enabled is unset, and also call it once more, outside IRQ
context, from ocelot_port_set_mm(), when mm->tx_enabled transitions from
true to false, because an IRQ is also expected in that case.

Also, a port may have its MAC Merge layer enabled but it may not have
generated the interrupt. In that case, there's no point in writing to
DEV_MM_STATUS to acknowledge that IRQ. We can reduce the number of
register writes per port with MM enabled by keeping an "ack" variable
which writes the "write-one-to-clear" bits. Those are 3 in number:
PRMPT_ACTIVE_STICKY, UNEXP_RX_PFRM_STICKY and UNEXP_TX_PFRM_STICKY.
The other fields in DEV_MM_STATUS are read-only and it doesn't matter
what is written to them, so writing zero is just fine.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net: mscc: ocelot: remove struct ocelot_mm_state :: lock 2023-04-18T02:01:18+00:00 Vladimir Oltean vladimir.oltean@nxp.com 2023-04-15T17:05:46+00:00 3ff468ef987e38740de9ca0a811c55e11bfb2141 Unfortunately, the workarounds for the hardware bugs make it pointless to keep fine-grained locking for the MAC Merge state of each port. Our vsc9959_cut_through_fwd() implementation requires ocelot->fwd_domain_lock to be held, in order to serialize with changes to the bridging domains and to port speed changes (which affect which ports can be cut-through). Simultaneously, the traffic classes which can be cut-through cannot be preemptible at the same time, and this will depend on the MAC Merge layer state (which changes from threaded interrupt context). Since vsc9959_cut_through_fwd() would have to hold the mm->lock of all ports for a correct and race-free implementation with respect to ocelot_mm_irq(), in practice it means that any time a port's mm->lock is held, it would potentially block holders of ocelot->fwd_domain_lock. In the interest of simple locking rules, make all MAC Merge layer state changes (and preemptible traffic class changes) be serialized by the ocelot->fwd_domain_lock. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Unfortunately, the workarounds for the hardware bugs make it pointless
to keep fine-grained locking for the MAC Merge state of each port.

Our vsc9959_cut_through_fwd() implementation requires
ocelot->fwd_domain_lock to be held, in order to serialize with changes
to the bridging domains and to port speed changes (which affect which
ports can be cut-through). Simultaneously, the traffic classes which can
be cut-through cannot be preemptible at the same time, and this will
depend on the MAC Merge layer state (which changes from threaded
interrupt context).

Since vsc9959_cut_through_fwd() would have to hold the mm->lock of all
ports for a correct and race-free implementation with respect to
ocelot_mm_irq(), in practice it means that any time a port's mm->lock is
held, it would potentially block holders of ocelot->fwd_domain_lock.

In the interest of simple locking rules, make all MAC Merge layer state
changes (and preemptible traffic class changes) be serialized by the
ocelot->fwd_domain_lock.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net: mscc: ocelot: export a single ocelot_mm_irq() 2023-04-18T02:01:18+00:00 Vladimir Oltean vladimir.oltean@nxp.com 2023-04-15T17:05:45+00:00 15f93f46f31232da863316769182c699e364c45f When the switch emits an IRQ, we don't know what caused it, and we iterate through all ports to check the MAC Merge status. Move that iteration inside the ocelot lib; we will change the locking in a future change and it would be good to encapsulate that lock completely within the ocelot lib. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
When the switch emits an IRQ, we don't know what caused it, and we
iterate through all ports to check the MAC Merge status.

Move that iteration inside the ocelot lib; we will change the locking in
a future change and it would be good to encapsulate that lock completely
within the ocelot lib.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>