From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- arch/sh/kernel/cpu/shmobile/sleep.S | 402 ++++++++++++++++++++++++++++++++++++ 1 file changed, 402 insertions(+) create mode 100644 arch/sh/kernel/cpu/shmobile/sleep.S (limited to 'arch/sh/kernel/cpu/shmobile/sleep.S') diff --git a/arch/sh/kernel/cpu/shmobile/sleep.S b/arch/sh/kernel/cpu/shmobile/sleep.S new file mode 100644 index 000000000..f928c0315 --- /dev/null +++ b/arch/sh/kernel/cpu/shmobile/sleep.S @@ -0,0 +1,402 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * arch/sh/kernel/cpu/sh4a/sleep-sh_mobile.S + * + * Sleep mode and Standby modes support for SuperH Mobile + * + * Copyright (C) 2009 Magnus Damm + */ + +#include +#include +#include +#include +#include + +/* + * Kernel mode register usage, see entry.S: + * k0 scratch + * k1 scratch + */ +#define k0 r0 +#define k1 r1 + +/* manage self-refresh and enter standby mode. must be self-contained. + * this code will be copied to on-chip memory and executed from there. + */ + .balign 4 +ENTRY(sh_mobile_sleep_enter_start) + + /* save mode flags */ + mov.l r4, @(SH_SLEEP_MODE, r5) + + /* save original vbr */ + stc vbr, r0 + mov.l r0, @(SH_SLEEP_VBR, r5) + + /* point vbr to our on-chip memory page */ + ldc r5, vbr + + /* save return address */ + sts pr, r0 + mov.l r0, @(SH_SLEEP_SPC, r5) + + /* save sr */ + stc sr, r0 + mov.l r0, @(SH_SLEEP_SR, r5) + + /* save general purpose registers to stack if needed */ + mov.l @(SH_SLEEP_MODE, r5), r0 + tst #SUSP_SH_REGS, r0 + bt skip_regs_save + + sts.l pr, @-r15 + mov.l r14, @-r15 + mov.l r13, @-r15 + mov.l r12, @-r15 + mov.l r11, @-r15 + mov.l r10, @-r15 + mov.l r9, @-r15 + mov.l r8, @-r15 + + /* make sure bank0 is selected, save low registers */ + mov.l rb_bit, r9 + not r9, r9 + bsr set_sr + mov #0, r10 + + bsr save_low_regs + nop + + /* switch to bank 1, save low registers */ + mov.l rb_bit, r10 + bsr set_sr + mov #-1, r9 + + bsr save_low_regs + nop + + /* switch back to bank 0 */ + mov.l rb_bit, r9 + not r9, r9 + bsr set_sr + mov #0, r10 + +skip_regs_save: + + /* save sp, also set to internal ram */ + mov.l r15, @(SH_SLEEP_SP, r5) + mov r5, r15 + + /* save stbcr */ + bsr save_register + mov #SH_SLEEP_REG_STBCR, r0 + + /* save mmu and cache context if needed */ + mov.l @(SH_SLEEP_MODE, r5), r0 + tst #SUSP_SH_MMU, r0 + bt skip_mmu_save_disable + + /* save mmu state */ + bsr save_register + mov #SH_SLEEP_REG_PTEH, r0 + + bsr save_register + mov #SH_SLEEP_REG_PTEL, r0 + + bsr save_register + mov #SH_SLEEP_REG_TTB, r0 + + bsr save_register + mov #SH_SLEEP_REG_TEA, r0 + + bsr save_register + mov #SH_SLEEP_REG_MMUCR, r0 + + bsr save_register + mov #SH_SLEEP_REG_PTEA, r0 + + bsr save_register + mov #SH_SLEEP_REG_PASCR, r0 + + bsr save_register + mov #SH_SLEEP_REG_IRMCR, r0 + + /* invalidate TLBs and disable the MMU */ + bsr get_register + mov #SH_SLEEP_REG_MMUCR, r0 + mov #4, r1 + mov.l r1, @r0 + icbi @r0 + + /* save cache registers and disable caches */ + bsr save_register + mov #SH_SLEEP_REG_CCR, r0 + + bsr save_register + mov #SH_SLEEP_REG_RAMCR, r0 + + bsr get_register + mov #SH_SLEEP_REG_CCR, r0 + mov #0, r1 + mov.l r1, @r0 + icbi @r0 + +skip_mmu_save_disable: + /* call self-refresh entering code if needed */ + mov.l @(SH_SLEEP_MODE, r5), r0 + tst #SUSP_SH_SF, r0 + bt skip_set_sf + + mov.l @(SH_SLEEP_SF_PRE, r5), r0 + jsr @r0 + nop + +skip_set_sf: + mov.l @(SH_SLEEP_MODE, r5), r0 + tst #SUSP_SH_STANDBY, r0 + bt test_rstandby + + /* set mode to "software standby mode" */ + bra do_sleep + mov #0x80, r1 + +test_rstandby: + tst #SUSP_SH_RSTANDBY, r0 + bt test_ustandby + + /* setup BAR register */ + bsr get_register + mov #SH_SLEEP_REG_BAR, r0 + mov.l @(SH_SLEEP_RESUME, r5), r1 + mov.l r1, @r0 + + /* set mode to "r-standby mode" */ + bra do_sleep + mov #0x20, r1 + +test_ustandby: + tst #SUSP_SH_USTANDBY, r0 + bt force_sleep + + /* set mode to "u-standby mode" */ + bra do_sleep + mov #0x10, r1 + +force_sleep: + + /* set mode to "sleep mode" */ + mov #0x00, r1 + +do_sleep: + /* setup and enter selected standby mode */ + bsr get_register + mov #SH_SLEEP_REG_STBCR, r0 + mov.l r1, @r0 +again: + sleep + bra again + nop + +save_register: + add #SH_SLEEP_BASE_ADDR, r0 + mov.l @(r0, r5), r1 + add #-SH_SLEEP_BASE_ADDR, r0 + mov.l @r1, r1 + add #SH_SLEEP_BASE_DATA, r0 + mov.l r1, @(r0, r5) + add #-SH_SLEEP_BASE_DATA, r0 + rts + nop + +get_register: + add #SH_SLEEP_BASE_ADDR, r0 + mov.l @(r0, r5), r0 + rts + nop + +set_sr: + stc sr, r8 + and r9, r8 + or r10, r8 + ldc r8, sr + rts + nop + +save_low_regs: + mov.l r7, @-r15 + mov.l r6, @-r15 + mov.l r5, @-r15 + mov.l r4, @-r15 + mov.l r3, @-r15 + mov.l r2, @-r15 + mov.l r1, @-r15 + rts + mov.l r0, @-r15 + + .balign 4 +rb_bit: .long 0x20000000 ! RB=1 + +ENTRY(sh_mobile_sleep_enter_end) + + .balign 4 +ENTRY(sh_mobile_sleep_resume_start) + + /* figure out start address */ + bsr 0f + nop +0: + sts pr, k1 + mov.l 1f, k0 + and k0, k1 + + /* store pointer to data area in VBR */ + ldc k1, vbr + + /* setup sr with saved sr */ + mov.l @(SH_SLEEP_SR, k1), k0 + ldc k0, sr + + /* now: user register set! */ + stc vbr, r5 + + /* setup spc with return address to c code */ + mov.l @(SH_SLEEP_SPC, r5), r0 + ldc r0, spc + + /* restore vbr */ + mov.l @(SH_SLEEP_VBR, r5), r0 + ldc r0, vbr + + /* setup ssr with saved sr */ + mov.l @(SH_SLEEP_SR, r5), r0 + ldc r0, ssr + + /* restore sp */ + mov.l @(SH_SLEEP_SP, r5), r15 + + /* restore sleep mode register */ + bsr restore_register + mov #SH_SLEEP_REG_STBCR, r0 + + /* call self-refresh resume code if needed */ + mov.l @(SH_SLEEP_MODE, r5), r0 + tst #SUSP_SH_SF, r0 + bt skip_restore_sf + + mov.l @(SH_SLEEP_SF_POST, r5), r0 + jsr @r0 + nop + +skip_restore_sf: + /* restore mmu and cache state if needed */ + mov.l @(SH_SLEEP_MODE, r5), r0 + tst #SUSP_SH_MMU, r0 + bt skip_restore_mmu + + /* restore mmu state */ + bsr restore_register + mov #SH_SLEEP_REG_PTEH, r0 + + bsr restore_register + mov #SH_SLEEP_REG_PTEL, r0 + + bsr restore_register + mov #SH_SLEEP_REG_TTB, r0 + + bsr restore_register + mov #SH_SLEEP_REG_TEA, r0 + + bsr restore_register + mov #SH_SLEEP_REG_PTEA, r0 + + bsr restore_register + mov #SH_SLEEP_REG_PASCR, r0 + + bsr restore_register + mov #SH_SLEEP_REG_IRMCR, r0 + + bsr restore_register + mov #SH_SLEEP_REG_MMUCR, r0 + icbi @r0 + + /* restore cache settings */ + bsr restore_register + mov #SH_SLEEP_REG_RAMCR, r0 + icbi @r0 + + bsr restore_register + mov #SH_SLEEP_REG_CCR, r0 + icbi @r0 + +skip_restore_mmu: + + /* restore general purpose registers if needed */ + mov.l @(SH_SLEEP_MODE, r5), r0 + tst #SUSP_SH_REGS, r0 + bt skip_restore_regs + + /* switch to bank 1, restore low registers */ + mov.l _rb_bit, r10 + bsr _set_sr + mov #-1, r9 + + bsr restore_low_regs + nop + + /* switch to bank0, restore low registers */ + mov.l _rb_bit, r9 + not r9, r9 + bsr _set_sr + mov #0, r10 + + bsr restore_low_regs + nop + + /* restore the rest of the registers */ + mov.l @r15+, r8 + mov.l @r15+, r9 + mov.l @r15+, r10 + mov.l @r15+, r11 + mov.l @r15+, r12 + mov.l @r15+, r13 + mov.l @r15+, r14 + lds.l @r15+, pr + +skip_restore_regs: + rte + nop + +restore_register: + add #SH_SLEEP_BASE_DATA, r0 + mov.l @(r0, r5), r1 + add #-SH_SLEEP_BASE_DATA, r0 + add #SH_SLEEP_BASE_ADDR, r0 + mov.l @(r0, r5), r0 + mov.l r1, @r0 + rts + nop + +_set_sr: + stc sr, r8 + and r9, r8 + or r10, r8 + ldc r8, sr + rts + nop + +restore_low_regs: + mov.l @r15+, r0 + mov.l @r15+, r1 + mov.l @r15+, r2 + mov.l @r15+, r3 + mov.l @r15+, r4 + mov.l @r15+, r5 + mov.l @r15+, r6 + rts + mov.l @r15+, r7 + + .balign 4 +_rb_bit: .long 0x20000000 ! RB=1 +1: .long ~0x7ff +ENTRY(sh_mobile_sleep_resume_end) -- cgit v1.2.3