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/bus/omap_l3_smx.c | 303 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 303 insertions(+) create mode 100644 drivers/bus/omap_l3_smx.c (limited to 'drivers/bus/omap_l3_smx.c') diff --git a/drivers/bus/omap_l3_smx.c b/drivers/bus/omap_l3_smx.c new file mode 100644 index 000000000..bb1606f5c --- /dev/null +++ b/drivers/bus/omap_l3_smx.c @@ -0,0 +1,303 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * OMAP3XXX L3 Interconnect Driver + * + * Copyright (C) 2011 Texas Corporation + * Felipe Balbi + * Santosh Shilimkar + * Sricharan + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "omap_l3_smx.h" + +static inline u64 omap3_l3_readll(void __iomem *base, u16 reg) +{ + return __raw_readll(base + reg); +} + +static inline void omap3_l3_writell(void __iomem *base, u16 reg, u64 value) +{ + __raw_writell(value, base + reg); +} + +static inline enum omap3_l3_code omap3_l3_decode_error_code(u64 error) +{ + return (error & 0x0f000000) >> L3_ERROR_LOG_CODE; +} + +static inline u32 omap3_l3_decode_addr(u64 error_addr) +{ + return error_addr & 0xffffffff; +} + +static inline unsigned omap3_l3_decode_cmd(u64 error) +{ + return (error & 0x07) >> L3_ERROR_LOG_CMD; +} + +static inline enum omap3_l3_initiator_id omap3_l3_decode_initid(u64 error) +{ + return (error & 0xff00) >> L3_ERROR_LOG_INITID; +} + +static inline unsigned omap3_l3_decode_req_info(u64 error) +{ + return (error >> 32) & 0xffff; +} + +static char *omap3_l3_code_string(u8 code) +{ + switch (code) { + case OMAP_L3_CODE_NOERROR: + return "No Error"; + case OMAP_L3_CODE_UNSUP_CMD: + return "Unsupported Command"; + case OMAP_L3_CODE_ADDR_HOLE: + return "Address Hole"; + case OMAP_L3_CODE_PROTECT_VIOLATION: + return "Protection Violation"; + case OMAP_L3_CODE_IN_BAND_ERR: + return "In-band Error"; + case OMAP_L3_CODE_REQ_TOUT_NOT_ACCEPT: + return "Request Timeout Not Accepted"; + case OMAP_L3_CODE_REQ_TOUT_NO_RESP: + return "Request Timeout, no response"; + default: + return "UNKNOWN error"; + } +} + +static char *omap3_l3_initiator_string(u8 initid) +{ + switch (initid) { + case OMAP_L3_LCD: + return "LCD"; + case OMAP_L3_SAD2D: + return "SAD2D"; + case OMAP_L3_IA_MPU_SS_1: + case OMAP_L3_IA_MPU_SS_2: + case OMAP_L3_IA_MPU_SS_3: + case OMAP_L3_IA_MPU_SS_4: + case OMAP_L3_IA_MPU_SS_5: + return "MPU"; + case OMAP_L3_IA_IVA_SS_1: + case OMAP_L3_IA_IVA_SS_2: + case OMAP_L3_IA_IVA_SS_3: + return "IVA_SS"; + case OMAP_L3_IA_IVA_SS_DMA_1: + case OMAP_L3_IA_IVA_SS_DMA_2: + case OMAP_L3_IA_IVA_SS_DMA_3: + case OMAP_L3_IA_IVA_SS_DMA_4: + case OMAP_L3_IA_IVA_SS_DMA_5: + case OMAP_L3_IA_IVA_SS_DMA_6: + return "IVA_SS_DMA"; + case OMAP_L3_IA_SGX: + return "SGX"; + case OMAP_L3_IA_CAM_1: + case OMAP_L3_IA_CAM_2: + case OMAP_L3_IA_CAM_3: + return "CAM"; + case OMAP_L3_IA_DAP: + return "DAP"; + case OMAP_L3_SDMA_WR_1: + case OMAP_L3_SDMA_WR_2: + return "SDMA_WR"; + case OMAP_L3_SDMA_RD_1: + case OMAP_L3_SDMA_RD_2: + case OMAP_L3_SDMA_RD_3: + case OMAP_L3_SDMA_RD_4: + return "SDMA_RD"; + case OMAP_L3_USBOTG: + return "USB_OTG"; + case OMAP_L3_USBHOST: + return "USB_HOST"; + default: + return "UNKNOWN Initiator"; + } +} + +/* + * omap3_l3_block_irq - handles a register block's irq + * @l3: struct omap3_l3 * + * @base: register block base address + * @error: L3_ERROR_LOG register of our block + * + * Called in hard-irq context. Caller should take care of locking + * + * OMAP36xx TRM gives, on page 2001, Figure 9-10, the Typical Error + * Analysis Sequence, we are following that sequence here, please + * refer to that Figure for more information on the subject. + */ +static irqreturn_t omap3_l3_block_irq(struct omap3_l3 *l3, + u64 error, int error_addr) +{ + u8 code = omap3_l3_decode_error_code(error); + u8 initid = omap3_l3_decode_initid(error); + u8 multi = error & L3_ERROR_LOG_MULTI; + u32 address = omap3_l3_decode_addr(error_addr); + + pr_err("%s seen by %s %s at address %x\n", + omap3_l3_code_string(code), + omap3_l3_initiator_string(initid), + multi ? "Multiple Errors" : "", address); + WARN_ON(1); + + return IRQ_HANDLED; +} + +static irqreturn_t omap3_l3_app_irq(int irq, void *_l3) +{ + struct omap3_l3 *l3 = _l3; + u64 status, clear; + u64 error; + u64 error_addr; + u64 err_source = 0; + void __iomem *base; + int int_type; + irqreturn_t ret = IRQ_NONE; + + int_type = irq == l3->app_irq ? L3_APPLICATION_ERROR : L3_DEBUG_ERROR; + if (!int_type) { + status = omap3_l3_readll(l3->rt, L3_SI_FLAG_STATUS_0); + /* + * if we have a timeout error, there's nothing we can + * do besides rebooting the board. So let's BUG on any + * of such errors and handle the others. timeout error + * is severe and not expected to occur. + */ + BUG_ON(status & L3_STATUS_0_TIMEOUT_MASK); + } else { + status = omap3_l3_readll(l3->rt, L3_SI_FLAG_STATUS_1); + /* No timeout error for debug sources */ + } + + /* identify the error source */ + err_source = __ffs(status); + + base = l3->rt + omap3_l3_bases[int_type][err_source]; + error = omap3_l3_readll(base, L3_ERROR_LOG); + if (error) { + error_addr = omap3_l3_readll(base, L3_ERROR_LOG_ADDR); + ret |= omap3_l3_block_irq(l3, error, error_addr); + } + + /* Clear the status register */ + clear = (L3_AGENT_STATUS_CLEAR_IA << int_type) | + L3_AGENT_STATUS_CLEAR_TA; + omap3_l3_writell(base, L3_AGENT_STATUS, clear); + + /* clear the error log register */ + omap3_l3_writell(base, L3_ERROR_LOG, error); + + return ret; +} + +#if IS_BUILTIN(CONFIG_OF) +static const struct of_device_id omap3_l3_match[] = { + { + .compatible = "ti,omap3-l3-smx", + }, + { }, +}; +MODULE_DEVICE_TABLE(of, omap3_l3_match); +#endif + +static int omap3_l3_probe(struct platform_device *pdev) +{ + struct omap3_l3 *l3; + struct resource *res; + int ret; + + l3 = kzalloc(sizeof(*l3), GFP_KERNEL); + if (!l3) + return -ENOMEM; + + platform_set_drvdata(pdev, l3); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "couldn't find resource\n"); + ret = -ENODEV; + goto err0; + } + l3->rt = ioremap(res->start, resource_size(res)); + if (!l3->rt) { + dev_err(&pdev->dev, "ioremap failed\n"); + ret = -ENOMEM; + goto err0; + } + + l3->debug_irq = platform_get_irq(pdev, 0); + ret = request_irq(l3->debug_irq, omap3_l3_app_irq, IRQF_TRIGGER_RISING, + "l3-debug-irq", l3); + if (ret) { + dev_err(&pdev->dev, "couldn't request debug irq\n"); + goto err1; + } + + l3->app_irq = platform_get_irq(pdev, 1); + ret = request_irq(l3->app_irq, omap3_l3_app_irq, IRQF_TRIGGER_RISING, + "l3-app-irq", l3); + if (ret) { + dev_err(&pdev->dev, "couldn't request app irq\n"); + goto err2; + } + + return 0; + +err2: + free_irq(l3->debug_irq, l3); +err1: + iounmap(l3->rt); +err0: + kfree(l3); + return ret; +} + +static int omap3_l3_remove(struct platform_device *pdev) +{ + struct omap3_l3 *l3 = platform_get_drvdata(pdev); + + free_irq(l3->app_irq, l3); + free_irq(l3->debug_irq, l3); + iounmap(l3->rt); + kfree(l3); + + return 0; +} + +static struct platform_driver omap3_l3_driver = { + .probe = omap3_l3_probe, + .remove = omap3_l3_remove, + .driver = { + .name = "omap_l3_smx", + .of_match_table = of_match_ptr(omap3_l3_match), + }, +}; + +static int __init omap3_l3_init(void) +{ + return platform_driver_register(&omap3_l3_driver); +} +postcore_initcall_sync(omap3_l3_init); + +static void __exit omap3_l3_exit(void) +{ + platform_driver_unregister(&omap3_l3_driver); +} +module_exit(omap3_l3_exit); + +MODULE_AUTHOR("Felipe Balbi"); +MODULE_AUTHOR("Santosh Shilimkar"); +MODULE_AUTHOR("Sricharan R"); +MODULE_DESCRIPTION("OMAP3XXX L3 Interconnect Driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3