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/powerpc/kernel/swsusp_asm64.S | 266 +++++++++++++++++++++++++++++++++++++ 1 file changed, 266 insertions(+) create mode 100644 arch/powerpc/kernel/swsusp_asm64.S (limited to 'arch/powerpc/kernel/swsusp_asm64.S') diff --git a/arch/powerpc/kernel/swsusp_asm64.S b/arch/powerpc/kernel/swsusp_asm64.S new file mode 100644 index 000000000..f645652c2 --- /dev/null +++ b/arch/powerpc/kernel/swsusp_asm64.S @@ -0,0 +1,266 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * PowerPC 64-bit swsusp implementation + * + * Copyright 2006 Johannes Berg + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * Structure for storing CPU registers on the save area. + */ +#define SL_r1 0x00 /* stack pointer */ +#define SL_PC 0x08 +#define SL_MSR 0x10 +#define SL_SDR1 0x18 +#define SL_XER 0x20 +#define SL_TB 0x40 +#define SL_r2 0x48 +#define SL_CR 0x50 +#define SL_LR 0x58 +#define SL_r12 0x60 +#define SL_r13 0x68 +#define SL_r14 0x70 +#define SL_r15 0x78 +#define SL_r16 0x80 +#define SL_r17 0x88 +#define SL_r18 0x90 +#define SL_r19 0x98 +#define SL_r20 0xa0 +#define SL_r21 0xa8 +#define SL_r22 0xb0 +#define SL_r23 0xb8 +#define SL_r24 0xc0 +#define SL_r25 0xc8 +#define SL_r26 0xd0 +#define SL_r27 0xd8 +#define SL_r28 0xe0 +#define SL_r29 0xe8 +#define SL_r30 0xf0 +#define SL_r31 0xf8 +#define SL_SPRG1 0x100 +#define SL_TCR 0x108 +#define SL_SIZE SL_TCR+8 + +/* these macros rely on the save area being + * pointed to by r11 */ + +#define SAVE_SPR(register) \ + mfspr r0, SPRN_##register ;\ + std r0, SL_##register(r11) +#define RESTORE_SPR(register) \ + ld r0, SL_##register(r11) ;\ + mtspr SPRN_##register, r0 +#define SAVE_SPECIAL(special) \ + mf##special r0 ;\ + std r0, SL_##special(r11) +#define RESTORE_SPECIAL(special) \ + ld r0, SL_##special(r11) ;\ + mt##special r0 +#define SAVE_REGISTER(reg) \ + std reg, SL_##reg(r11) +#define RESTORE_REGISTER(reg) \ + ld reg, SL_##reg(r11) + +/* space for storing cpu state */ + .section .data + .align 5 +swsusp_save_area: + .space SL_SIZE + + .section .text + .align 5 +_GLOBAL(swsusp_arch_suspend) + LOAD_REG_ADDR(r11, swsusp_save_area) + SAVE_SPECIAL(LR) + SAVE_REGISTER(r1) + SAVE_SPECIAL(CR) + SAVE_SPECIAL(TB) + SAVE_REGISTER(r2) + SAVE_REGISTER(r12) + SAVE_REGISTER(r13) + SAVE_REGISTER(r14) + SAVE_REGISTER(r15) + SAVE_REGISTER(r16) + SAVE_REGISTER(r17) + SAVE_REGISTER(r18) + SAVE_REGISTER(r19) + SAVE_REGISTER(r20) + SAVE_REGISTER(r21) + SAVE_REGISTER(r22) + SAVE_REGISTER(r23) + SAVE_REGISTER(r24) + SAVE_REGISTER(r25) + SAVE_REGISTER(r26) + SAVE_REGISTER(r27) + SAVE_REGISTER(r28) + SAVE_REGISTER(r29) + SAVE_REGISTER(r30) + SAVE_REGISTER(r31) + SAVE_SPECIAL(MSR) + SAVE_SPECIAL(XER) +#ifdef CONFIG_PPC_BOOK3S_64 +BEGIN_FW_FTR_SECTION + SAVE_SPECIAL(SDR1) +END_FW_FTR_SECTION_IFCLR(FW_FEATURE_LPAR) +#else + SAVE_SPR(TCR) + + /* Save SPRG1, SPRG1 be used save paca */ + SAVE_SPR(SPRG1) +#endif + + /* we push the stack up 128 bytes but don't store the + * stack pointer on the stack like a real stackframe */ + addi r1,r1,-128 + + bl swsusp_save + + /* restore LR */ + LOAD_REG_ADDR(r11, swsusp_save_area) + RESTORE_SPECIAL(LR) + addi r1,r1,128 + + blr + +/* Resume code */ +_GLOBAL(swsusp_arch_resume) + /* Stop pending alitvec streams and memory accesses */ +BEGIN_FTR_SECTION + PPC_DSSALL +END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC) + sync + + LOAD_REG_ADDR(r11, restore_pblist) + ld r12,0(r12) + + cmpdi r12,0 + beq- nothing_to_copy + li r15,PAGE_SIZE>>3 +copyloop: + ld r13,pbe_address(r12) + ld r14,pbe_orig_address(r12) + + mtctr r15 + li r10,0 +copy_page_loop: + ldx r0,r10,r13 + stdx r0,r10,r14 + addi r10,r10,8 + bdnz copy_page_loop + + ld r12,pbe_next(r12) + cmpdi r12,0 + bne+ copyloop +nothing_to_copy: + +#ifdef CONFIG_PPC_BOOK3S_64 + /* flush caches */ + lis r3, 0x10 + mtctr r3 + li r3, 0 + ori r3, r3, CONFIG_KERNEL_START>>48 + li r0, 48 + sld r3, r3, r0 + li r0, 0 +1: + dcbf 0,r3 + addi r3,r3,0x20 + bdnz 1b + + sync + + tlbia +#endif + + LOAD_REG_ADDR(r11, swsusp_save_area) + + RESTORE_SPECIAL(CR) + + /* restore timebase */ + /* load saved tb */ + ld r1, SL_TB(r11) + /* get upper 32 bits of it */ + srdi r2, r1, 32 + /* clear tb lower to avoid wrap */ + li r0, 0 + mttbl r0 + /* set tb upper */ + mttbu r2 + /* set tb lower */ + mttbl r1 + + /* restore registers */ + RESTORE_REGISTER(r1) + RESTORE_REGISTER(r2) + RESTORE_REGISTER(r12) + RESTORE_REGISTER(r13) + RESTORE_REGISTER(r14) + RESTORE_REGISTER(r15) + RESTORE_REGISTER(r16) + RESTORE_REGISTER(r17) + RESTORE_REGISTER(r18) + RESTORE_REGISTER(r19) + RESTORE_REGISTER(r20) + RESTORE_REGISTER(r21) + RESTORE_REGISTER(r22) + RESTORE_REGISTER(r23) + RESTORE_REGISTER(r24) + RESTORE_REGISTER(r25) + RESTORE_REGISTER(r26) + RESTORE_REGISTER(r27) + RESTORE_REGISTER(r28) + RESTORE_REGISTER(r29) + RESTORE_REGISTER(r30) + RESTORE_REGISTER(r31) + +#ifdef CONFIG_PPC_BOOK3S_64 + /* can't use RESTORE_SPECIAL(MSR) */ + ld r0, SL_MSR(r11) + mtmsrd r0, 0 +BEGIN_FW_FTR_SECTION + RESTORE_SPECIAL(SDR1) +END_FW_FTR_SECTION_IFCLR(FW_FEATURE_LPAR) +#else + /* Restore SPRG1, be used to save paca */ + ld r0, SL_SPRG1(r11) + mtsprg 1, r0 + + RESTORE_SPECIAL(MSR) + + /* Restore TCR and clear any pending bits in TSR. */ + RESTORE_SPR(TCR) + lis r0, (TSR_ENW | TSR_WIS | TSR_DIS | TSR_FIS)@h + mtspr SPRN_TSR, r0 + + /* Kick decrementer */ + li r0, 1 + mtdec r0 + + /* Invalidate all tlbs */ + bl _tlbil_all +#endif + RESTORE_SPECIAL(XER) + + sync + + addi r1,r1,-128 +#ifdef CONFIG_PPC_BOOK3S_64 + bl slb_flush_and_restore_bolted +#endif + bl do_after_copyback + addi r1,r1,128 + + LOAD_REG_ADDR(r11, swsusp_save_area) + RESTORE_SPECIAL(LR) + + li r3, 0 + blr -- cgit v1.2.3