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/rapidio/switches/idt_gen3.c | 378 ++++++++++++++++++++++++++++++++++++ 1 file changed, 378 insertions(+) create mode 100644 drivers/rapidio/switches/idt_gen3.c (limited to 'drivers/rapidio/switches/idt_gen3.c') diff --git a/drivers/rapidio/switches/idt_gen3.c b/drivers/rapidio/switches/idt_gen3.c new file mode 100644 index 000000000..d7537e621 --- /dev/null +++ b/drivers/rapidio/switches/idt_gen3.c @@ -0,0 +1,378 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * IDT RXS Gen.3 Serial RapidIO switch family support + * + * Copyright 2016 Integrated Device Technology, Inc. + */ + +#include +#include +#include +#include +#include +#include + +#include +#include "../rio.h" + +#define RIO_EM_PW_STAT 0x40020 +#define RIO_PW_CTL 0x40204 +#define RIO_PW_CTL_PW_TMR 0xffffff00 +#define RIO_PW_ROUTE 0x40208 + +#define RIO_EM_DEV_INT_EN 0x40030 + +#define RIO_PLM_SPx_IMP_SPEC_CTL(x) (0x10100 + (x)*0x100) +#define RIO_PLM_SPx_IMP_SPEC_CTL_SOFT_RST 0x02000000 + +#define RIO_PLM_SPx_PW_EN(x) (0x10118 + (x)*0x100) +#define RIO_PLM_SPx_PW_EN_OK2U 0x40000000 +#define RIO_PLM_SPx_PW_EN_LINIT 0x10000000 + +#define RIO_BC_L2_Gn_ENTRYx_CSR(n, x) (0x31000 + (n)*0x400 + (x)*0x4) +#define RIO_SPx_L2_Gn_ENTRYy_CSR(x, n, y) \ + (0x51000 + (x)*0x2000 + (n)*0x400 + (y)*0x4) + +static int +idtg3_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount, + u16 table, u16 route_destid, u8 route_port) +{ + u32 rval; + u32 entry = route_port; + int err = 0; + + pr_debug("RIO: %s t=0x%x did_%x to p_%x\n", + __func__, table, route_destid, entry); + + if (route_destid > 0xFF) + return -EINVAL; + + if (route_port == RIO_INVALID_ROUTE) + entry = RIO_RT_ENTRY_DROP_PKT; + + if (table == RIO_GLOBAL_TABLE) { + /* Use broadcast register to update all per-port tables */ + err = rio_mport_write_config_32(mport, destid, hopcount, + RIO_BC_L2_Gn_ENTRYx_CSR(0, route_destid), + entry); + return err; + } + + /* + * Verify that specified port/table number is valid + */ + err = rio_mport_read_config_32(mport, destid, hopcount, + RIO_SWP_INFO_CAR, &rval); + if (err) + return err; + + if (table >= RIO_GET_TOTAL_PORTS(rval)) + return -EINVAL; + + err = rio_mport_write_config_32(mport, destid, hopcount, + RIO_SPx_L2_Gn_ENTRYy_CSR(table, 0, route_destid), + entry); + return err; +} + +static int +idtg3_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount, + u16 table, u16 route_destid, u8 *route_port) +{ + u32 rval; + int err; + + if (route_destid > 0xFF) + return -EINVAL; + + err = rio_mport_read_config_32(mport, destid, hopcount, + RIO_SWP_INFO_CAR, &rval); + if (err) + return err; + + /* + * This switch device does not have the dedicated global routing table. + * It is substituted by reading routing table of the ingress port of + * maintenance read requests. + */ + if (table == RIO_GLOBAL_TABLE) + table = RIO_GET_PORT_NUM(rval); + else if (table >= RIO_GET_TOTAL_PORTS(rval)) + return -EINVAL; + + err = rio_mport_read_config_32(mport, destid, hopcount, + RIO_SPx_L2_Gn_ENTRYy_CSR(table, 0, route_destid), + &rval); + if (err) + return err; + + if (rval == RIO_RT_ENTRY_DROP_PKT) + *route_port = RIO_INVALID_ROUTE; + else + *route_port = (u8)rval; + + return 0; +} + +static int +idtg3_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount, + u16 table) +{ + u32 i; + u32 rval; + int err; + + if (table == RIO_GLOBAL_TABLE) { + for (i = 0; i <= 0xff; i++) { + err = rio_mport_write_config_32(mport, destid, hopcount, + RIO_BC_L2_Gn_ENTRYx_CSR(0, i), + RIO_RT_ENTRY_DROP_PKT); + if (err) + break; + } + + return err; + } + + err = rio_mport_read_config_32(mport, destid, hopcount, + RIO_SWP_INFO_CAR, &rval); + if (err) + return err; + + if (table >= RIO_GET_TOTAL_PORTS(rval)) + return -EINVAL; + + for (i = 0; i <= 0xff; i++) { + err = rio_mport_write_config_32(mport, destid, hopcount, + RIO_SPx_L2_Gn_ENTRYy_CSR(table, 0, i), + RIO_RT_ENTRY_DROP_PKT); + if (err) + break; + } + + return err; +} + +/* + * This routine performs device-specific initialization only. + * All standard EM configuration should be performed at upper level. + */ +static int +idtg3_em_init(struct rio_dev *rdev) +{ + int i, tmp; + u32 rval; + + pr_debug("RIO: %s [%d:%d]\n", __func__, rdev->destid, rdev->hopcount); + + /* Disable assertion of interrupt signal */ + rio_write_config_32(rdev, RIO_EM_DEV_INT_EN, 0); + + /* Disable port-write event notifications during initialization */ + rio_write_config_32(rdev, rdev->em_efptr + RIO_EM_PW_TX_CTRL, + RIO_EM_PW_TX_CTRL_PW_DIS); + + /* Configure Port-Write notifications for hot-swap events */ + tmp = RIO_GET_TOTAL_PORTS(rdev->swpinfo); + for (i = 0; i < tmp; i++) { + + rio_read_config_32(rdev, + RIO_DEV_PORT_N_ERR_STS_CSR(rdev, i), + &rval); + if (rval & RIO_PORT_N_ERR_STS_PORT_UA) + continue; + + /* Clear events signaled before enabling notification */ + rio_write_config_32(rdev, + rdev->em_efptr + RIO_EM_PN_ERR_DETECT(i), 0); + + /* Enable event notifications */ + rio_write_config_32(rdev, + rdev->em_efptr + RIO_EM_PN_ERRRATE_EN(i), + RIO_EM_PN_ERRRATE_EN_OK2U | RIO_EM_PN_ERRRATE_EN_U2OK); + /* Enable port-write generation on events */ + rio_write_config_32(rdev, RIO_PLM_SPx_PW_EN(i), + RIO_PLM_SPx_PW_EN_OK2U | RIO_PLM_SPx_PW_EN_LINIT); + + } + + /* Set Port-Write destination port */ + tmp = RIO_GET_PORT_NUM(rdev->swpinfo); + rio_write_config_32(rdev, RIO_PW_ROUTE, 1 << tmp); + + + /* Enable sending port-write event notifications */ + rio_write_config_32(rdev, rdev->em_efptr + RIO_EM_PW_TX_CTRL, 0); + + /* set TVAL = ~50us */ + rio_write_config_32(rdev, + rdev->phys_efptr + RIO_PORT_LINKTO_CTL_CSR, 0x8e << 8); + return 0; +} + + +/* + * idtg3_em_handler - device-specific error handler + * + * If the link is down (PORT_UNINIT) does nothing - this is considered + * as link partner removal from the port. + * + * If the link is up (PORT_OK) - situation is handled as *new* device insertion. + * In this case ERR_STOP bits are cleared by issuing soft reset command to the + * reporting port. Inbound and outbound ackIDs are cleared by the reset as well. + * This way the port is synchronized with freshly inserted device (assuming it + * was reset/powered-up on insertion). + * + * TODO: This is not sufficient in a situation when a link between two devices + * was down and up again (e.g. cable disconnect). For that situation full ackID + * realignment process has to be implemented. + */ +static int +idtg3_em_handler(struct rio_dev *rdev, u8 pnum) +{ + u32 err_status; + u32 rval; + + rio_read_config_32(rdev, + RIO_DEV_PORT_N_ERR_STS_CSR(rdev, pnum), + &err_status); + + /* Do nothing for device/link removal */ + if (err_status & RIO_PORT_N_ERR_STS_PORT_UNINIT) + return 0; + + /* When link is OK we have a device insertion. + * Request port soft reset to clear errors if they present. + * Inbound and outbound ackIDs will be 0 after reset. + */ + if (err_status & (RIO_PORT_N_ERR_STS_OUT_ES | + RIO_PORT_N_ERR_STS_INP_ES)) { + rio_read_config_32(rdev, RIO_PLM_SPx_IMP_SPEC_CTL(pnum), &rval); + rio_write_config_32(rdev, RIO_PLM_SPx_IMP_SPEC_CTL(pnum), + rval | RIO_PLM_SPx_IMP_SPEC_CTL_SOFT_RST); + udelay(10); + rio_write_config_32(rdev, RIO_PLM_SPx_IMP_SPEC_CTL(pnum), rval); + msleep(500); + } + + return 0; +} + +static struct rio_switch_ops idtg3_switch_ops = { + .owner = THIS_MODULE, + .add_entry = idtg3_route_add_entry, + .get_entry = idtg3_route_get_entry, + .clr_table = idtg3_route_clr_table, + .em_init = idtg3_em_init, + .em_handle = idtg3_em_handler, +}; + +static int idtg3_probe(struct rio_dev *rdev, const struct rio_device_id *id) +{ + pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev)); + + spin_lock(&rdev->rswitch->lock); + + if (rdev->rswitch->ops) { + spin_unlock(&rdev->rswitch->lock); + return -EINVAL; + } + + rdev->rswitch->ops = &idtg3_switch_ops; + + if (rdev->do_enum) { + /* Disable hierarchical routing support: Existing fabric + * enumeration/discovery process (see rio-scan.c) uses 8-bit + * flat destination ID routing only. + */ + rio_write_config_32(rdev, 0x5000 + RIO_BC_RT_CTL_CSR, 0); + } + + spin_unlock(&rdev->rswitch->lock); + + return 0; +} + +static void idtg3_remove(struct rio_dev *rdev) +{ + pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev)); + spin_lock(&rdev->rswitch->lock); + if (rdev->rswitch->ops == &idtg3_switch_ops) + rdev->rswitch->ops = NULL; + spin_unlock(&rdev->rswitch->lock); +} + +/* + * Gen3 switches repeat sending PW messages until a corresponding event flag + * is cleared. Use shutdown notification to disable generation of port-write + * messages if their destination node is shut down. + */ +static void idtg3_shutdown(struct rio_dev *rdev) +{ + int i; + u32 rval; + u16 destid; + + /* Currently the enumerator node acts also as PW handler */ + if (!rdev->do_enum) + return; + + pr_debug("RIO: %s(%s)\n", __func__, rio_name(rdev)); + + rio_read_config_32(rdev, RIO_PW_ROUTE, &rval); + i = RIO_GET_PORT_NUM(rdev->swpinfo); + + /* Check port-write destination port */ + if (!((1 << i) & rval)) + return; + + /* Disable sending port-write event notifications if PW destID + * matches to one of the enumerator node + */ + rio_read_config_32(rdev, rdev->em_efptr + RIO_EM_PW_TGT_DEVID, &rval); + + if (rval & RIO_EM_PW_TGT_DEVID_DEV16) + destid = rval >> 16; + else + destid = ((rval & RIO_EM_PW_TGT_DEVID_D8) >> 16); + + if (rdev->net->hport->host_deviceid == destid) { + rio_write_config_32(rdev, + rdev->em_efptr + RIO_EM_PW_TX_CTRL, 0); + pr_debug("RIO: %s(%s) PW transmission disabled\n", + __func__, rio_name(rdev)); + } +} + +static const struct rio_device_id idtg3_id_table[] = { + {RIO_DEVICE(RIO_DID_IDTRXS1632, RIO_VID_IDT)}, + {RIO_DEVICE(RIO_DID_IDTRXS2448, RIO_VID_IDT)}, + { 0, } /* terminate list */ +}; + +static struct rio_driver idtg3_driver = { + .name = "idt_gen3", + .id_table = idtg3_id_table, + .probe = idtg3_probe, + .remove = idtg3_remove, + .shutdown = idtg3_shutdown, +}; + +static int __init idtg3_init(void) +{ + return rio_register_driver(&idtg3_driver); +} + +static void __exit idtg3_exit(void) +{ + pr_debug("RIO: %s\n", __func__); + rio_unregister_driver(&idtg3_driver); + pr_debug("RIO: %s done\n", __func__); +} + +device_initcall(idtg3_init); +module_exit(idtg3_exit); + +MODULE_DESCRIPTION("IDT RXS Gen.3 Serial RapidIO switch family driver"); +MODULE_AUTHOR("Integrated Device Technology, Inc."); +MODULE_LICENSE("GPL"); -- cgit v1.2.3