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/parisc/kernel/hpmc.S | 289 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 289 insertions(+) create mode 100644 arch/parisc/kernel/hpmc.S (limited to 'arch/parisc/kernel/hpmc.S') diff --git a/arch/parisc/kernel/hpmc.S b/arch/parisc/kernel/hpmc.S new file mode 100644 index 000000000..eb2e4bd67 --- /dev/null +++ b/arch/parisc/kernel/hpmc.S @@ -0,0 +1,289 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * HPMC (High Priority Machine Check) handler. + * + * Copyright (C) 1999 Philipp Rumpf + * Copyright (C) 1999 Hewlett-Packard (Frank Rowand) + * Copyright (C) 2000 Hewlett-Packard (John Marvin) + */ + + +/* + * This HPMC handler retrieves the HPMC pim data, resets IO and + * returns to the default trap handler with code set to 1 (HPMC). + * The default trap handler calls handle interruption, which + * does a stack and register dump. This at least allows kernel + * developers to get back to C code in virtual mode, where they + * have the option to examine and print values from memory that + * would help in debugging an HPMC caused by a software bug. + * + * There is more to do here: + * + * 1) On MP systems we need to synchronize processors + * before calling pdc/iodc. + * 2) We should be checking the system state and not + * returning to the fault handler if things are really + * bad. + * + */ + + .level 1.1 + +#include +#include +#include + +#include +#include + + /* + * stack for os_hpmc, the HPMC handler. + * buffer for IODC procedures (for the HPMC handler). + * + * IODC requires 7K byte stack. That leaves 1K byte for os_hpmc. + */ + + .import toc_stack,data +#define hpmc_stack toc_stack /* re-use the TOC stack */ + +#define HPMC_IODC_BUF_SIZE 0x8000 + + __PAGE_ALIGNED_BSS + .align 4096 +hpmc_iodc_buf: + .block HPMC_IODC_BUF_SIZE + + .section .bss + .align 8 +hpmc_raddr: + .block 128 + +#define HPMC_PIM_DATA_SIZE 896 /* Enough to hold all architected 2.0 state */ + + .section .bss + .align 8 +ENTRY(hpmc_pim_data) + .block HPMC_PIM_DATA_SIZE +END(hpmc_pim_data) + + .text + + .import intr_save, code + .align 16 +ENTRY(os_hpmc) +.os_hpmc: + + /* + * registers modified: + * + * Using callee saves registers without saving them. The + * original values are in the pim dump if we need them. + * + * r2 (rp) return pointer + * r3 address of PDCE_PROC + * r4 scratch + * r5 scratch + * r23 (arg3) procedure arg + * r24 (arg2) procedure arg + * r25 (arg1) procedure arg + * r26 (arg0) procedure arg + * r30 (sp) stack pointer + * + * registers read: + * + * r26 contains address of PDCE_PROC on entry + * r28 (ret0) return value from procedure + */ + + copy arg0, %r3 /* save address of PDCE_PROC */ + + /* + * disable nested HPMCs + * + * Increment os_hpmc checksum to invalidate it. + * Do this before turning the PSW M bit off. + */ + + mfctl %cr14, %r4 + ldw 52(%r4),%r5 + addi 1,%r5,%r5 + stw %r5,52(%r4) + + /* MP_FIXME: synchronize all processors. */ + + /* Setup stack pointer. */ + + load32 PA(hpmc_stack),sp + + ldo 128(sp),sp /* leave room for arguments */ + + /* + * Most PDC routines require that the M bit be off. + * So turn on the Q bit and turn off the M bit. + */ + + ldi PSW_SM_Q,%r4 /* PSW Q on, PSW M off */ + mtctl %r4,ipsw + mtctl %r0,pcsq + mtctl %r0,pcsq + load32 PA(os_hpmc_1),%r4 + mtctl %r4,pcoq + ldo 4(%r4),%r4 + mtctl %r4,pcoq + rfi + nop + +os_hpmc_1: + + /* Call PDC_PIM to get HPMC pim info */ + + /* + * Note that on some newer boxes, PDC_PIM must be called + * before PDC_IO if you want IO to be reset. PDC_PIM sets + * a flag that PDC_IO examines. + */ + + ldo PDC_PIM(%r0), arg0 + ldo PDC_PIM_HPMC(%r0),arg1 /* Transfer HPMC data */ + load32 PA(hpmc_raddr),arg2 + load32 PA(hpmc_pim_data),arg3 + load32 HPMC_PIM_DATA_SIZE,%r4 + stw %r4,-52(sp) + + ldil L%PA(os_hpmc_2), rp + bv (r3) /* call pdce_proc */ + ldo R%PA(os_hpmc_2)(rp), rp + +os_hpmc_2: + comib,<> 0,ret0, os_hpmc_fail + + /* Reset IO by calling the hversion dependent PDC_IO routine */ + + ldo PDC_IO(%r0),arg0 + ldo 0(%r0),arg1 /* log IO errors */ + ldo 0(%r0),arg2 /* reserved */ + ldo 0(%r0),arg3 /* reserved */ + stw %r0,-52(sp) /* reserved */ + + ldil L%PA(os_hpmc_3),rp + bv (%r3) /* call pdce_proc */ + ldo R%PA(os_hpmc_3)(rp),rp + +os_hpmc_3: + + /* FIXME? Check for errors from PDC_IO (-1 might be OK) */ + + /* + * Initialize the IODC console device (HPA,SPA, path etc. + * are stored on page 0. + */ + + /* + * Load IODC into hpmc_iodc_buf by calling PDC_IODC. + * Note that PDC_IODC handles flushing the appropriate + * data and instruction cache lines. + */ + + ldo PDC_IODC(%r0),arg0 + ldo PDC_IODC_READ(%r0),arg1 + load32 PA(hpmc_raddr),arg2 + ldw BOOT_CONSOLE_HPA_OFFSET(%r0),arg3 /* console hpa */ + ldo PDC_IODC_RI_INIT(%r0),%r4 + stw %r4,-52(sp) + load32 PA(hpmc_iodc_buf),%r4 + stw %r4,-56(sp) + load32 HPMC_IODC_BUF_SIZE,%r4 + stw %r4,-60(sp) + + ldil L%PA(os_hpmc_4),rp + bv (%r3) /* call pdce_proc */ + ldo R%PA(os_hpmc_4)(rp),rp + +os_hpmc_4: + comib,<> 0,ret0,os_hpmc_fail + + /* Call the entry init (just loaded by PDC_IODC) */ + + ldw BOOT_CONSOLE_HPA_OFFSET(%r0),arg0 /* console hpa */ + ldo ENTRY_INIT_MOD_DEV(%r0), arg1 + ldw BOOT_CONSOLE_SPA_OFFSET(%r0),arg2 /* console spa */ + depi 0,31,11,arg2 /* clear bits 21-31 */ + ldo BOOT_CONSOLE_PATH_OFFSET(%r0),arg3 /* console path */ + load32 PA(hpmc_raddr),%r4 + stw %r4, -52(sp) + stw %r0, -56(sp) /* HV */ + stw %r0, -60(sp) /* HV */ + stw %r0, -64(sp) /* HV */ + stw %r0, -68(sp) /* lang, must be zero */ + + load32 PA(hpmc_iodc_buf),%r5 + ldil L%PA(os_hpmc_5),rp + bv (%r5) + ldo R%PA(os_hpmc_5)(rp),rp + +os_hpmc_5: + comib,<> 0,ret0,os_hpmc_fail + + /* Prepare to call intr_save */ + + /* + * Load kernel page directory (load into user also, since + * we don't intend to ever return to user land anyway) + */ + + load32 PA(swapper_pg_dir),%r4 + mtctl %r4,%cr24 /* Initialize kernel root pointer */ + mtctl %r4,%cr25 /* Initialize user root pointer */ + + /* Clear sr4-sr7 */ + + mtsp %r0, %sr4 + mtsp %r0, %sr5 + mtsp %r0, %sr6 + mtsp %r0, %sr7 + + tovirt_r1 %r30 /* make sp virtual */ + + rsm PSW_SM_Q,%r0 /* Clear Q bit */ + ldi 1,%r8 /* Set trap code to "1" for HPMC */ + load32 PA(intr_save),%r1 + be 0(%sr7,%r1) + nop + +os_hpmc_fail: + + /* + * Reset the system + * + * Some systems may lockup from a broadcast reset, so try the + * hversion PDC_BROADCAST_RESET() first. + * MP_FIXME: reset all processors if more than one central bus. + */ + + /* PDC_BROADCAST_RESET() */ + + ldo PDC_BROADCAST_RESET(%r0),arg0 + ldo 0(%r0),arg1 /* do reset */ + + ldil L%PA(os_hpmc_6),rp + bv (%r3) /* call pdce_proc */ + ldo R%PA(os_hpmc_6)(rp),rp + +os_hpmc_6: + + /* + * possible return values: + * -1 non-existent procedure + * -2 non-existent option + * -16 unaligned stack + * + * If call returned, do a broadcast reset. + */ + + ldil L%0xfffc0000,%r4 /* IO_BROADCAST */ + ldo 5(%r0),%r5 + stw %r5,48(%r4) /* CMD_RESET to IO_COMMAND offset */ + + b . + nop + .align 16 /* make function length multiple of 16 bytes */ -- cgit v1.2.3