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/mips/alchemy/devboards/pm.c | 254 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 254 insertions(+) create mode 100644 arch/mips/alchemy/devboards/pm.c (limited to 'arch/mips/alchemy/devboards/pm.c') diff --git a/arch/mips/alchemy/devboards/pm.c b/arch/mips/alchemy/devboards/pm.c new file mode 100644 index 000000000..b17a0d199 --- /dev/null +++ b/arch/mips/alchemy/devboards/pm.c @@ -0,0 +1,254 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Alchemy Development Board example suspend userspace interface. + * + * (c) 2008 Manuel Lauss + */ + +#include +#include +#include +#include +#include +#include +#include + +/* + * Generic suspend userspace interface for Alchemy development boards. + * This code exports a few sysfs nodes under /sys/power/db1x/ which + * can be used by userspace to en/disable all au1x-provided wakeup + * sources and configure the timeout after which the TOYMATCH2 irq + * is to trigger a wakeup. + */ + + +static unsigned long db1x_pm_sleep_secs; +static unsigned long db1x_pm_wakemsk; +static unsigned long db1x_pm_last_wakesrc; + +static int db1x_pm_enter(suspend_state_t state) +{ + unsigned short bcsrs[16]; + int i, j, hasint; + + /* save CPLD regs */ + hasint = bcsr_read(BCSR_WHOAMI); + hasint = BCSR_WHOAMI_BOARD(hasint) >= BCSR_WHOAMI_DB1200; + j = (hasint) ? BCSR_MASKSET : BCSR_SYSTEM; + + for (i = BCSR_STATUS; i <= j; i++) + bcsrs[i] = bcsr_read(i); + + /* shut off hexleds */ + bcsr_write(BCSR_HEXCLEAR, 3); + + /* enable GPIO based wakeup */ + alchemy_gpio1_input_enable(); + + /* clear and setup wake cause and source */ + alchemy_wrsys(0, AU1000_SYS_WAKEMSK); + alchemy_wrsys(0, AU1000_SYS_WAKESRC); + + alchemy_wrsys(db1x_pm_wakemsk, AU1000_SYS_WAKEMSK); + + /* setup 1Hz-timer-based wakeup: wait for reg access */ + while (alchemy_rdsys(AU1000_SYS_CNTRCTRL) & SYS_CNTRL_M20) + asm volatile ("nop"); + + alchemy_wrsys(alchemy_rdsys(AU1000_SYS_TOYREAD) + db1x_pm_sleep_secs, + AU1000_SYS_TOYMATCH2); + + /* wait for value to really hit the register */ + while (alchemy_rdsys(AU1000_SYS_CNTRCTRL) & SYS_CNTRL_M20) + asm volatile ("nop"); + + /* ...and now the sandman can come! */ + au_sleep(); + + + /* restore CPLD regs */ + for (i = BCSR_STATUS; i <= BCSR_SYSTEM; i++) + bcsr_write(i, bcsrs[i]); + + /* restore CPLD int registers */ + if (hasint) { + bcsr_write(BCSR_INTCLR, 0xffff); + bcsr_write(BCSR_MASKCLR, 0xffff); + bcsr_write(BCSR_INTSTAT, 0xffff); + bcsr_write(BCSR_INTSET, bcsrs[BCSR_INTSET]); + bcsr_write(BCSR_MASKSET, bcsrs[BCSR_MASKSET]); + } + + /* light up hexleds */ + bcsr_write(BCSR_HEXCLEAR, 0); + + return 0; +} + +static int db1x_pm_begin(suspend_state_t state) +{ + if (!db1x_pm_wakemsk) { + printk(KERN_ERR "db1x: no wakeup source activated!\n"); + return -EINVAL; + } + + return 0; +} + +static void db1x_pm_end(void) +{ + /* read and store wakeup source, the clear the register. To + * be able to clear it, WAKEMSK must be cleared first. + */ + db1x_pm_last_wakesrc = alchemy_rdsys(AU1000_SYS_WAKESRC); + + alchemy_wrsys(0, AU1000_SYS_WAKEMSK); + alchemy_wrsys(0, AU1000_SYS_WAKESRC); +} + +static const struct platform_suspend_ops db1x_pm_ops = { + .valid = suspend_valid_only_mem, + .begin = db1x_pm_begin, + .enter = db1x_pm_enter, + .end = db1x_pm_end, +}; + +#define ATTRCMP(x) (0 == strcmp(attr->attr.name, #x)) + +static ssize_t db1x_pmattr_show(struct kobject *kobj, + struct kobj_attribute *attr, + char *buf) +{ + int idx; + + if (ATTRCMP(timer_timeout)) + return sprintf(buf, "%lu\n", db1x_pm_sleep_secs); + + else if (ATTRCMP(timer)) + return sprintf(buf, "%u\n", + !!(db1x_pm_wakemsk & SYS_WAKEMSK_M2)); + + else if (ATTRCMP(wakesrc)) + return sprintf(buf, "%lu\n", db1x_pm_last_wakesrc); + + else if (ATTRCMP(gpio0) || ATTRCMP(gpio1) || ATTRCMP(gpio2) || + ATTRCMP(gpio3) || ATTRCMP(gpio4) || ATTRCMP(gpio5) || + ATTRCMP(gpio6) || ATTRCMP(gpio7)) { + idx = (attr->attr.name)[4] - '0'; + return sprintf(buf, "%d\n", + !!(db1x_pm_wakemsk & SYS_WAKEMSK_GPIO(idx))); + + } else if (ATTRCMP(wakemsk)) { + return sprintf(buf, "%08lx\n", db1x_pm_wakemsk); + } + + return -ENOENT; +} + +static ssize_t db1x_pmattr_store(struct kobject *kobj, + struct kobj_attribute *attr, + const char *instr, + size_t bytes) +{ + unsigned long l; + int tmp; + + if (ATTRCMP(timer_timeout)) { + tmp = kstrtoul(instr, 0, &l); + if (tmp) + return tmp; + + db1x_pm_sleep_secs = l; + + } else if (ATTRCMP(timer)) { + if (instr[0] != '0') + db1x_pm_wakemsk |= SYS_WAKEMSK_M2; + else + db1x_pm_wakemsk &= ~SYS_WAKEMSK_M2; + + } else if (ATTRCMP(gpio0) || ATTRCMP(gpio1) || ATTRCMP(gpio2) || + ATTRCMP(gpio3) || ATTRCMP(gpio4) || ATTRCMP(gpio5) || + ATTRCMP(gpio6) || ATTRCMP(gpio7)) { + tmp = (attr->attr.name)[4] - '0'; + if (instr[0] != '0') { + db1x_pm_wakemsk |= SYS_WAKEMSK_GPIO(tmp); + } else { + db1x_pm_wakemsk &= ~SYS_WAKEMSK_GPIO(tmp); + } + + } else if (ATTRCMP(wakemsk)) { + tmp = kstrtoul(instr, 0, &l); + if (tmp) + return tmp; + + db1x_pm_wakemsk = l & 0x0000003f; + + } else + bytes = -ENOENT; + + return bytes; +} + +#define ATTR(x) \ + static struct kobj_attribute x##_attribute = \ + __ATTR(x, 0664, db1x_pmattr_show, \ + db1x_pmattr_store); + +ATTR(gpio0) /* GPIO-based wakeup enable */ +ATTR(gpio1) +ATTR(gpio2) +ATTR(gpio3) +ATTR(gpio4) +ATTR(gpio5) +ATTR(gpio6) +ATTR(gpio7) +ATTR(timer) /* TOYMATCH2-based wakeup enable */ +ATTR(timer_timeout) /* timer-based wakeup timeout value, in seconds */ +ATTR(wakesrc) /* contents of SYS_WAKESRC after last wakeup */ +ATTR(wakemsk) /* direct access to SYS_WAKEMSK */ + +#define ATTR_LIST(x) & x ## _attribute.attr +static struct attribute *db1x_pmattrs[] = { + ATTR_LIST(gpio0), + ATTR_LIST(gpio1), + ATTR_LIST(gpio2), + ATTR_LIST(gpio3), + ATTR_LIST(gpio4), + ATTR_LIST(gpio5), + ATTR_LIST(gpio6), + ATTR_LIST(gpio7), + ATTR_LIST(timer), + ATTR_LIST(timer_timeout), + ATTR_LIST(wakesrc), + ATTR_LIST(wakemsk), + NULL, /* terminator */ +}; + +static struct attribute_group db1x_pmattr_group = { + .name = "db1x", + .attrs = db1x_pmattrs, +}; + +/* + * Initialize suspend interface + */ +static int __init pm_init(void) +{ + /* init TOY to tick at 1Hz if not already done. No need to wait + * for confirmation since there's plenty of time from here to + * the next suspend cycle. + */ + if (alchemy_rdsys(AU1000_SYS_TOYTRIM) != 32767) + alchemy_wrsys(32767, AU1000_SYS_TOYTRIM); + + db1x_pm_last_wakesrc = alchemy_rdsys(AU1000_SYS_WAKESRC); + + alchemy_wrsys(0, AU1000_SYS_WAKESRC); + alchemy_wrsys(0, AU1000_SYS_WAKEMSK); + + suspend_set_ops(&db1x_pm_ops); + + return sysfs_create_group(power_kobj, &db1x_pmattr_group); +} + +late_initcall(pm_init); -- cgit v1.2.3