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/net/wwan/iosm/iosm_ipc_pm.h | 207 ++++++++++++++++++++++++++++++++++++ 1 file changed, 207 insertions(+) create mode 100644 drivers/net/wwan/iosm/iosm_ipc_pm.h (limited to 'drivers/net/wwan/iosm/iosm_ipc_pm.h') diff --git a/drivers/net/wwan/iosm/iosm_ipc_pm.h b/drivers/net/wwan/iosm/iosm_ipc_pm.h new file mode 100644 index 000000000..e7c00f388 --- /dev/null +++ b/drivers/net/wwan/iosm/iosm_ipc_pm.h @@ -0,0 +1,207 @@ +/* SPDX-License-Identifier: GPL-2.0-only + * + * Copyright (C) 2020-21 Intel Corporation. + */ + +#ifndef IOSM_IPC_PM_H +#define IOSM_IPC_PM_H + +/* Trigger the doorbell interrupt on cp to change the PM sleep/active status */ +#define ipc_cp_irq_sleep_control(ipc_pcie, data) \ + ipc_doorbell_fire(ipc_pcie, IPC_DOORBELL_IRQ_SLEEP, data) + +/* Trigger the doorbell interrupt on CP to do hpda update */ +#define ipc_cp_irq_hpda_update(ipc_pcie, data) \ + ipc_doorbell_fire(ipc_pcie, IPC_DOORBELL_IRQ_HPDA, 0xFF & (data)) + +/** + * union ipc_pm_cond - Conditions for D3 and the sleep message to CP. + * @raw: raw/combined value for faster check + * @irq: IRQ towards CP + * @hs: Host Sleep + * @link: Device link state. + */ +union ipc_pm_cond { + unsigned int raw; + + struct { + unsigned int irq:1, + hs:1, + link:1; + }; +}; + +/** + * enum ipc_mem_host_pm_state - Possible states of the HOST SLEEP finite state + * machine. + * @IPC_MEM_HOST_PM_ACTIVE: Host is active + * @IPC_MEM_HOST_PM_ACTIVE_WAIT: Intermediate state before going to + * active + * @IPC_MEM_HOST_PM_SLEEP_WAIT_IDLE: Intermediate state to wait for idle + * before going into sleep + * @IPC_MEM_HOST_PM_SLEEP_WAIT_D3: Intermediate state to wait for D3 + * before going to sleep + * @IPC_MEM_HOST_PM_SLEEP: after this state the interface is not + * accessible host is in suspend to RAM + * @IPC_MEM_HOST_PM_SLEEP_WAIT_EXIT_SLEEP: Intermediate state before exiting + * sleep + */ +enum ipc_mem_host_pm_state { + IPC_MEM_HOST_PM_ACTIVE, + IPC_MEM_HOST_PM_ACTIVE_WAIT, + IPC_MEM_HOST_PM_SLEEP_WAIT_IDLE, + IPC_MEM_HOST_PM_SLEEP_WAIT_D3, + IPC_MEM_HOST_PM_SLEEP, + IPC_MEM_HOST_PM_SLEEP_WAIT_EXIT_SLEEP, +}; + +/** + * enum ipc_mem_dev_pm_state - Possible states of the DEVICE SLEEP finite state + * machine. + * @IPC_MEM_DEV_PM_ACTIVE: IPC_MEM_DEV_PM_ACTIVE is the initial + * power management state. + * IRQ(struct ipc_mem_device_info: + * device_sleep_notification) + * and DOORBELL-IRQ-HPDA(data) values. + * @IPC_MEM_DEV_PM_SLEEP: IPC_MEM_DEV_PM_SLEEP is PM state for + * sleep. + * @IPC_MEM_DEV_PM_WAKEUP: DOORBELL-IRQ-DEVICE_WAKE(data). + * @IPC_MEM_DEV_PM_HOST_SLEEP: DOORBELL-IRQ-HOST_SLEEP(data). + * @IPC_MEM_DEV_PM_ACTIVE_WAIT: Local intermediate states. + * @IPC_MEM_DEV_PM_FORCE_SLEEP: DOORBELL-IRQ-FORCE_SLEEP. + * @IPC_MEM_DEV_PM_FORCE_ACTIVE: DOORBELL-IRQ-FORCE_ACTIVE. + */ +enum ipc_mem_dev_pm_state { + IPC_MEM_DEV_PM_ACTIVE, + IPC_MEM_DEV_PM_SLEEP, + IPC_MEM_DEV_PM_WAKEUP, + IPC_MEM_DEV_PM_HOST_SLEEP, + IPC_MEM_DEV_PM_ACTIVE_WAIT, + IPC_MEM_DEV_PM_FORCE_SLEEP = 7, + IPC_MEM_DEV_PM_FORCE_ACTIVE, +}; + +/** + * struct iosm_pm - Power management instance + * @pcie: Pointer to iosm_pcie structure + * @dev: Pointer to device structure + * @host_pm_state: PM states for host + * @host_sleep_pend: Variable to indicate Host Sleep Pending + * @host_sleep_complete: Generic wait-for-completion used in + * case of Host Sleep + * @pm_cond: Conditions for power management + * @ap_state: Current power management state, the + * initial state is IPC_MEM_DEV_PM_ACTIVE eq. 0. + * @cp_state: PM State of CP + * @device_sleep_notification: last handled device_sleep_notfication + * @pending_hpda_update: is a HPDA update pending? + */ +struct iosm_pm { + struct iosm_pcie *pcie; + struct device *dev; + enum ipc_mem_host_pm_state host_pm_state; + unsigned long host_sleep_pend; + struct completion host_sleep_complete; + union ipc_pm_cond pm_cond; + enum ipc_mem_dev_pm_state ap_state; + enum ipc_mem_dev_pm_state cp_state; + u32 device_sleep_notification; + u8 pending_hpda_update:1; +}; + +/** + * enum ipc_pm_unit - Power management units. + * @IPC_PM_UNIT_IRQ: IRQ towards CP + * @IPC_PM_UNIT_HS: Host Sleep for converged protocol + * @IPC_PM_UNIT_LINK: Link state controlled by CP. + */ +enum ipc_pm_unit { + IPC_PM_UNIT_IRQ, + IPC_PM_UNIT_HS, + IPC_PM_UNIT_LINK, +}; + +/** + * ipc_pm_init - Allocate power management component + * @ipc_protocol: Pointer to iosm_protocol structure + */ +void ipc_pm_init(struct iosm_protocol *ipc_protocol); + +/** + * ipc_pm_deinit - Free power management component, invalidating its pointer. + * @ipc_protocol: Pointer to iosm_protocol structure + */ +void ipc_pm_deinit(struct iosm_protocol *ipc_protocol); + +/** + * ipc_pm_dev_slp_notification - Handle a sleep notification message from the + * device. This can be called from interrupt state + * This function handles Host Sleep requests too + * if the Host Sleep protocol is register based. + * @ipc_pm: Pointer to power management component + * @sleep_notification: Actual notification from device + * + * Returns: true if dev sleep state has to be checked, false otherwise. + */ +bool ipc_pm_dev_slp_notification(struct iosm_pm *ipc_pm, + u32 sleep_notification); + +/** + * ipc_pm_set_s2idle_sleep - Set PM variables to sleep/active + * @ipc_pm: Pointer to power management component + * @sleep: true to enter sleep/false to exit sleep + */ +void ipc_pm_set_s2idle_sleep(struct iosm_pm *ipc_pm, bool sleep); + +/** + * ipc_pm_prepare_host_sleep - Prepare the PM for sleep by entering + * IPC_MEM_HOST_PM_SLEEP_WAIT_D3 state. + * @ipc_pm: Pointer to power management component + * + * Returns: true on success, false if the host was not active. + */ +bool ipc_pm_prepare_host_sleep(struct iosm_pm *ipc_pm); + +/** + * ipc_pm_prepare_host_active - Prepare the PM for wakeup by entering + * IPC_MEM_HOST_PM_ACTIVE_WAIT state. + * @ipc_pm: Pointer to power management component + * + * Returns: true on success, false if the host was not sleeping. + */ +bool ipc_pm_prepare_host_active(struct iosm_pm *ipc_pm); + +/** + * ipc_pm_wait_for_device_active - Wait upto IPC_PM_ACTIVE_TIMEOUT_MS ms + * for the device to reach active state + * @ipc_pm: Pointer to power management component + * + * Returns: true if device is active, false on timeout + */ +bool ipc_pm_wait_for_device_active(struct iosm_pm *ipc_pm); + +/** + * ipc_pm_signal_hpda_doorbell - Wake up the device if it is in low power mode + * and trigger a head pointer update interrupt. + * @ipc_pm: Pointer to power management component + * @identifier: specifies what component triggered hpda update irq + * @host_slp_check: if set to true then Host Sleep state machine check will + * be performed. If Host Sleep state machine allows HP + * update then only doorbell is triggered otherwise pending + * flag will be set. If set to false then Host Sleep check + * will not be performed. This is helpful for Host Sleep + * negotiation through message ring. + */ +void ipc_pm_signal_hpda_doorbell(struct iosm_pm *ipc_pm, u32 identifier, + bool host_slp_check); +/** + * ipc_pm_trigger - Update power manager and wake up the link if needed + * @ipc_pm: Pointer to power management component + * @unit: Power management units + * @active: Device link state + * + * Returns: true if link is unchanged or active, false otherwise + */ +bool ipc_pm_trigger(struct iosm_pm *ipc_pm, enum ipc_pm_unit unit, bool active); + +#endif -- cgit v1.2.3