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/i3c/master/mipi-i3c-hci/hci.h | 144 ++++++++++++++++++++++++++++++++++ 1 file changed, 144 insertions(+) create mode 100644 drivers/i3c/master/mipi-i3c-hci/hci.h (limited to 'drivers/i3c/master/mipi-i3c-hci/hci.h') diff --git a/drivers/i3c/master/mipi-i3c-hci/hci.h b/drivers/i3c/master/mipi-i3c-hci/hci.h new file mode 100644 index 000000000..f109923f6 --- /dev/null +++ b/drivers/i3c/master/mipi-i3c-hci/hci.h @@ -0,0 +1,144 @@ +/* SPDX-License-Identifier: BSD-3-Clause */ +/* + * Copyright (c) 2020, MIPI Alliance, Inc. + * + * Author: Nicolas Pitre + * + * Common HCI stuff + */ + +#ifndef HCI_H +#define HCI_H + + +/* Handy logging macro to save on line length */ +#define DBG(x, ...) pr_devel("%s: " x "\n", __func__, ##__VA_ARGS__) + +/* 32-bit word aware bit and mask macros */ +#define W0_MASK(h, l) GENMASK((h) - 0, (l) - 0) +#define W1_MASK(h, l) GENMASK((h) - 32, (l) - 32) +#define W2_MASK(h, l) GENMASK((h) - 64, (l) - 64) +#define W3_MASK(h, l) GENMASK((h) - 96, (l) - 96) + +/* Same for single bit macros (trailing _ to align with W*_MASK width) */ +#define W0_BIT_(x) BIT((x) - 0) +#define W1_BIT_(x) BIT((x) - 32) +#define W2_BIT_(x) BIT((x) - 64) +#define W3_BIT_(x) BIT((x) - 96) + + +struct hci_cmd_ops; + +/* Our main structure */ +struct i3c_hci { + struct i3c_master_controller master; + void __iomem *base_regs; + void __iomem *DAT_regs; + void __iomem *DCT_regs; + void __iomem *RHS_regs; + void __iomem *PIO_regs; + void __iomem *EXTCAPS_regs; + void __iomem *AUTOCMD_regs; + void __iomem *DEBUG_regs; + const struct hci_io_ops *io; + void *io_data; + const struct hci_cmd_ops *cmd; + atomic_t next_cmd_tid; + u32 caps; + unsigned int quirks; + unsigned int DAT_entries; + unsigned int DAT_entry_size; + void *DAT_data; + unsigned int DCT_entries; + unsigned int DCT_entry_size; + u8 version_major; + u8 version_minor; + u8 revision; + u32 vendor_mipi_id; + u32 vendor_version_id; + u32 vendor_product_id; + void *vendor_data; +}; + + +/* + * Structure to represent a master initiated transfer. + * The rnw, data and data_len fields must be initialized before calling any + * hci->cmd->*() method. The cmd method will initialize cmd_desc[] and + * possibly modify (clear) the data field. Then xfer->cmd_desc[0] can + * be augmented with CMD_0_ROC and/or CMD_0_TOC. + * The completion field needs to be initialized before queueing with + * hci->io->queue_xfer(), and requires CMD_0_ROC to be set. + */ +struct hci_xfer { + u32 cmd_desc[4]; + u32 response; + bool rnw; + void *data; + unsigned int data_len; + unsigned int cmd_tid; + struct completion *completion; + union { + struct { + /* PIO specific */ + struct hci_xfer *next_xfer; + struct hci_xfer *next_data; + struct hci_xfer *next_resp; + unsigned int data_left; + u32 data_word_before_partial; + }; + struct { + /* DMA specific */ + dma_addr_t data_dma; + int ring_number; + int ring_entry; + }; + }; +}; + +static inline struct hci_xfer *hci_alloc_xfer(unsigned int n) +{ + return kcalloc(n, sizeof(struct hci_xfer), GFP_KERNEL); +} + +static inline void hci_free_xfer(struct hci_xfer *xfer, unsigned int n) +{ + kfree(xfer); +} + + +/* This abstracts PIO vs DMA operations */ +struct hci_io_ops { + bool (*irq_handler)(struct i3c_hci *hci, unsigned int mask); + int (*queue_xfer)(struct i3c_hci *hci, struct hci_xfer *xfer, int n); + bool (*dequeue_xfer)(struct i3c_hci *hci, struct hci_xfer *xfer, int n); + int (*request_ibi)(struct i3c_hci *hci, struct i3c_dev_desc *dev, + const struct i3c_ibi_setup *req); + void (*free_ibi)(struct i3c_hci *hci, struct i3c_dev_desc *dev); + void (*recycle_ibi_slot)(struct i3c_hci *hci, struct i3c_dev_desc *dev, + struct i3c_ibi_slot *slot); + int (*init)(struct i3c_hci *hci); + void (*cleanup)(struct i3c_hci *hci); +}; + +extern const struct hci_io_ops mipi_i3c_hci_pio; +extern const struct hci_io_ops mipi_i3c_hci_dma; + + +/* Our per device master private data */ +struct i3c_hci_dev_data { + int dat_idx; + void *ibi_data; +}; + + +/* list of quirks */ +#define HCI_QUIRK_RAW_CCC BIT(1) /* CCC framing must be explicit */ + + +/* global functions */ +void mipi_i3c_hci_resume(struct i3c_hci *hci); +void mipi_i3c_hci_pio_reset(struct i3c_hci *hci); +void mipi_i3c_hci_dct_index_reset(struct i3c_hci *hci); + +#endif -- cgit v1.2.3