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(). ... --- drivers/misc/hpilo.h | 214 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 214 insertions(+) create mode 100644 drivers/misc/hpilo.h (limited to 'drivers/misc/hpilo.h') diff --git a/drivers/misc/hpilo.h b/drivers/misc/hpilo.h new file mode 100644 index 000000000..d57c34680 --- /dev/null +++ b/drivers/misc/hpilo.h @@ -0,0 +1,214 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * linux/drivers/char/hpilo.h + * + * Copyright (C) 2008 Hewlett-Packard Development Company, L.P. + * David Altobelli + */ +#ifndef __HPILO_H +#define __HPILO_H + +#define ILO_NAME "hpilo" + +/* iLO ASIC PCI revision id */ +#define PCI_REV_ID_NECHES 7 + +/* max number of open channel control blocks per device, hw limited to 32 */ +#define MAX_CCB 24 +/* min number of open channel control blocks per device, hw limited to 32 */ +#define MIN_CCB 8 +/* max number of supported devices */ +#define MAX_ILO_DEV 1 +/* max number of files */ +#define MAX_OPEN (MAX_CCB * MAX_ILO_DEV) +/* total wait time in usec */ +#define MAX_WAIT_TIME 10000 +/* per spin wait time in usec */ +#define WAIT_TIME 10 +/* spin counter for open/close delay */ +#define MAX_WAIT (MAX_WAIT_TIME / WAIT_TIME) + +/* + * Per device, used to track global memory allocations. + */ +struct ilo_hwinfo { + /* mmio registers on device */ + char __iomem *mmio_vaddr; + + /* doorbell registers on device */ + char __iomem *db_vaddr; + + /* shared memory on device used for channel control blocks */ + char __iomem *ram_vaddr; + + /* files corresponding to this device */ + struct ccb_data *ccb_alloc[MAX_CCB]; + + struct pci_dev *ilo_dev; + + /* + * open_lock serializes ccb_cnt during open and close + * [ irq disabled ] + * -> alloc_lock used when adding/removing/searching ccb_alloc, + * which represents all ccbs open on the device + * --> fifo_lock controls access to fifo queues shared with hw + * + * Locks must be taken in this order, but open_lock and alloc_lock + * are optional, they do not need to be held in order to take a + * lower level lock. + */ + spinlock_t open_lock; + spinlock_t alloc_lock; + spinlock_t fifo_lock; + + struct cdev cdev; +}; + +/* offset from mmio_vaddr for enabling doorbell interrupts */ +#define DB_IRQ 0xB2 +/* offset from mmio_vaddr for outbound communications */ +#define DB_OUT 0xD4 +/* DB_OUT reset bit */ +#define DB_RESET 26 + +/* + * Channel control block. Used to manage hardware queues. + * The format must match hw's version. The hw ccb is 128 bytes, + * but the context area shouldn't be touched by the driver. + */ +#define ILOSW_CCB_SZ 64 +#define ILOHW_CCB_SZ 128 +struct ccb { + union { + char *send_fifobar; + u64 send_fifobar_pa; + } ccb_u1; + union { + char *send_desc; + u64 send_desc_pa; + } ccb_u2; + u64 send_ctrl; + + union { + char *recv_fifobar; + u64 recv_fifobar_pa; + } ccb_u3; + union { + char *recv_desc; + u64 recv_desc_pa; + } ccb_u4; + u64 recv_ctrl; + + union { + char __iomem *db_base; + u64 padding5; + } ccb_u5; + + u64 channel; + + /* unused context area (64 bytes) */ +}; + +/* ccb queue parameters */ +#define SENDQ 1 +#define RECVQ 2 +#define NR_QENTRY 4 +#define L2_QENTRY_SZ 12 + +/* ccb ctrl bitfields */ +#define CTRL_BITPOS_L2SZ 0 +#define CTRL_BITPOS_FIFOINDEXMASK 4 +#define CTRL_BITPOS_DESCLIMIT 18 +#define CTRL_BITPOS_A 30 +#define CTRL_BITPOS_G 31 + +/* ccb doorbell macros */ +#define L2_DB_SIZE 14 +#define ONE_DB_SIZE (1 << L2_DB_SIZE) + +/* + * Per fd structure used to track the ccb allocated to that dev file. + */ +struct ccb_data { + /* software version of ccb, using virtual addrs */ + struct ccb driver_ccb; + + /* hardware version of ccb, using physical addrs */ + struct ccb ilo_ccb; + + /* hardware ccb is written to this shared mapped device memory */ + struct ccb __iomem *mapped_ccb; + + /* dma'able memory used for send/recv queues */ + void *dma_va; + dma_addr_t dma_pa; + size_t dma_size; + + /* pointer to hardware device info */ + struct ilo_hwinfo *ilo_hw; + + /* queue for this ccb to wait for recv data */ + wait_queue_head_t ccb_waitq; + + /* usage count, to allow for shared ccb's */ + int ccb_cnt; + + /* open wanted exclusive access to this ccb */ + int ccb_excl; +}; + +/* + * FIFO queue structure, shared with hw. + */ +#define ILO_START_ALIGN 4096 +#define ILO_CACHE_SZ 128 +struct fifo { + u64 nrents; /* user requested number of fifo entries */ + u64 imask; /* mask to extract valid fifo index */ + u64 merge; /* O/C bits to merge in during enqueue operation */ + u64 reset; /* set to non-zero when the target device resets */ + u8 pad_0[ILO_CACHE_SZ - (sizeof(u64) * 4)]; + + u64 head; + u8 pad_1[ILO_CACHE_SZ - (sizeof(u64))]; + + u64 tail; + u8 pad_2[ILO_CACHE_SZ - (sizeof(u64))]; + + u64 fifobar[]; +}; + +/* convert between struct fifo, and the fifobar, which is saved in the ccb */ +#define FIFOHANDLESIZE (sizeof(struct fifo)) +#define FIFOBARTOHANDLE(_fifo) \ + ((struct fifo *)(((char *)(_fifo)) - FIFOHANDLESIZE)) + +/* the number of qwords to consume from the entry descriptor */ +#define ENTRY_BITPOS_QWORDS 0 +/* descriptor index number (within a specified queue) */ +#define ENTRY_BITPOS_DESCRIPTOR 10 +/* state bit, fifo entry consumed by consumer */ +#define ENTRY_BITPOS_C 22 +/* state bit, fifo entry is occupied */ +#define ENTRY_BITPOS_O 23 + +#define ENTRY_BITS_QWORDS 10 +#define ENTRY_BITS_DESCRIPTOR 12 +#define ENTRY_BITS_C 1 +#define ENTRY_BITS_O 1 +#define ENTRY_BITS_TOTAL \ + (ENTRY_BITS_C + ENTRY_BITS_O + \ + ENTRY_BITS_QWORDS + ENTRY_BITS_DESCRIPTOR) + +/* extract various entry fields */ +#define ENTRY_MASK ((1 << ENTRY_BITS_TOTAL) - 1) +#define ENTRY_MASK_C (((1 << ENTRY_BITS_C) - 1) << ENTRY_BITPOS_C) +#define ENTRY_MASK_O (((1 << ENTRY_BITS_O) - 1) << ENTRY_BITPOS_O) +#define ENTRY_MASK_QWORDS \ + (((1 << ENTRY_BITS_QWORDS) - 1) << ENTRY_BITPOS_QWORDS) +#define ENTRY_MASK_DESCRIPTOR \ + (((1 << ENTRY_BITS_DESCRIPTOR) - 1) << ENTRY_BITPOS_DESCRIPTOR) + +#define ENTRY_MASK_NOSTATE (ENTRY_MASK >> (ENTRY_BITS_C + ENTRY_BITS_O)) + +#endif /* __HPILO_H */ -- cgit v1.2.3