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(). ... --- .../net/wireless/ath/ath9k/ath9k_pci_owl_loader.c | 261 +++++++++++++++++++++ 1 file changed, 261 insertions(+) create mode 100644 drivers/net/wireless/ath/ath9k/ath9k_pci_owl_loader.c (limited to 'drivers/net/wireless/ath/ath9k/ath9k_pci_owl_loader.c') diff --git a/drivers/net/wireless/ath/ath9k/ath9k_pci_owl_loader.c b/drivers/net/wireless/ath/ath9k/ath9k_pci_owl_loader.c new file mode 100644 index 000000000..708c8969b --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/ath9k_pci_owl_loader.c @@ -0,0 +1,261 @@ +// SPDX-License-Identifier: ISC +/* Initialize Owl Emulation Devices + * + * Copyright (C) 2016 Christian Lamparter + * Copyright (C) 2016 Martin Blumenstingl + * + * Some devices (like the Cisco Meraki Z1 Cloud Managed Teleworker Gateway) + * need to be able to initialize the PCIe wifi device. Normally, this is done + * during the early stages as a pci quirk. + * However, this isn't possible for devices which have the init code for the + * Atheros chip stored on UBI Volume on NAND. Hence, this module can be used to + * initialize the chip when the user-space is ready to extract the init code. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct owl_ctx { + struct pci_dev *pdev; + struct completion eeprom_load; + struct work_struct work; + struct nvmem_cell *cell; +}; + +#define EEPROM_FILENAME_LEN 100 + +#define AR5416_EEPROM_MAGIC 0xa55a + +static int ath9k_pci_fixup(struct pci_dev *pdev, const u16 *cal_data, + size_t cal_len) +{ + void __iomem *mem; + const void *cal_end = (void *)cal_data + cal_len; + const struct { + u16 reg; + u16 low_val; + u16 high_val; + } __packed * data; + u16 cmd; + u32 bar0; + bool swap_needed = false; + + /* also note that we are doing *u16 operations on the file */ + if (cal_len > 4096 || cal_len < 0x200 || (cal_len & 1) == 1) { + dev_err(&pdev->dev, "eeprom has an invalid size.\n"); + return -EINVAL; + } + + if (*cal_data != AR5416_EEPROM_MAGIC) { + if (*cal_data != swab16(AR5416_EEPROM_MAGIC)) { + dev_err(&pdev->dev, "invalid calibration data\n"); + return -EINVAL; + } + + dev_dbg(&pdev->dev, "calibration data needs swapping\n"); + swap_needed = true; + } + + dev_info(&pdev->dev, "fixup device configuration\n"); + + mem = pcim_iomap(pdev, 0, 0); + if (!mem) { + dev_err(&pdev->dev, "ioremap error\n"); + return -EINVAL; + } + + pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &bar0); + pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, + pci_resource_start(pdev, 0)); + pci_read_config_word(pdev, PCI_COMMAND, &cmd); + cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; + pci_write_config_word(pdev, PCI_COMMAND, cmd); + + /* set pointer to first reg address */ + for (data = (const void *)(cal_data + 3); + (const void *)data <= cal_end && data->reg != (u16)~0; + data++) { + u32 val; + u16 reg; + + reg = data->reg; + val = data->low_val; + val |= ((u32)data->high_val) << 16; + + if (swap_needed) { + reg = swab16(reg); + val = swahb32(val); + } + + iowrite32(val, mem + reg); + usleep_range(100, 120); + } + + pci_read_config_word(pdev, PCI_COMMAND, &cmd); + cmd &= ~(PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY); + pci_write_config_word(pdev, PCI_COMMAND, cmd); + + pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, bar0); + pcim_iounmap(pdev, mem); + + pci_disable_device(pdev); + + return 0; +} + +static void owl_rescan(struct pci_dev *pdev) +{ + struct pci_bus *bus = pdev->bus; + + pci_lock_rescan_remove(); + pci_stop_and_remove_bus_device(pdev); + /* the device should come back with the proper + * ProductId. But we have to initiate a rescan. + */ + pci_rescan_bus(bus); + pci_unlock_rescan_remove(); +} + +static void owl_fw_cb(const struct firmware *fw, void *context) +{ + struct owl_ctx *ctx = (struct owl_ctx *)context; + + complete(&ctx->eeprom_load); + + if (fw) { + ath9k_pci_fixup(ctx->pdev, (const u16 *)fw->data, fw->size); + owl_rescan(ctx->pdev); + } else { + dev_err(&ctx->pdev->dev, "no eeprom data received.\n"); + } + release_firmware(fw); +} + +static const char *owl_get_eeprom_name(struct pci_dev *pdev) +{ + struct device *dev = &pdev->dev; + char *eeprom_name; + + dev_dbg(dev, "using auto-generated eeprom filename\n"); + + eeprom_name = devm_kzalloc(dev, EEPROM_FILENAME_LEN, GFP_KERNEL); + if (!eeprom_name) + return NULL; + + /* this should match the pattern used in ath9k/init.c */ + scnprintf(eeprom_name, EEPROM_FILENAME_LEN, "ath9k-eeprom-pci-%s.bin", + dev_name(dev)); + + return eeprom_name; +} + +static void owl_nvmem_work(struct work_struct *work) +{ + struct owl_ctx *ctx = container_of(work, struct owl_ctx, work); + void *buf; + size_t len; + + complete(&ctx->eeprom_load); + + buf = nvmem_cell_read(ctx->cell, &len); + if (!IS_ERR(buf)) { + ath9k_pci_fixup(ctx->pdev, buf, len); + kfree(buf); + owl_rescan(ctx->pdev); + } else { + dev_err(&ctx->pdev->dev, "no nvmem data received.\n"); + } +} + +static int owl_nvmem_probe(struct owl_ctx *ctx) +{ + int err; + + ctx->cell = devm_nvmem_cell_get(&ctx->pdev->dev, "calibration"); + if (IS_ERR(ctx->cell)) { + err = PTR_ERR(ctx->cell); + if (err == -ENOENT || err == -EOPNOTSUPP) + return 1; /* not present, try firmware_request */ + + return err; + } + + INIT_WORK(&ctx->work, owl_nvmem_work); + schedule_work(&ctx->work); + + return 0; +} + +static int owl_probe(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + struct owl_ctx *ctx; + const char *eeprom_name; + int err = 0; + + if (pcim_enable_device(pdev)) + return -EIO; + + pcim_pin_device(pdev); + + ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + init_completion(&ctx->eeprom_load); + ctx->pdev = pdev; + + pci_set_drvdata(pdev, ctx); + + err = owl_nvmem_probe(ctx); + if (err <= 0) + return err; + + eeprom_name = owl_get_eeprom_name(pdev); + if (!eeprom_name) { + dev_err(&pdev->dev, "no eeprom filename found.\n"); + return -ENODEV; + } + + err = request_firmware_nowait(THIS_MODULE, true, eeprom_name, + &pdev->dev, GFP_KERNEL, ctx, owl_fw_cb); + if (err) + dev_err(&pdev->dev, "failed to request caldata (%d).\n", err); + + return err; +} + +static void owl_remove(struct pci_dev *pdev) +{ + struct owl_ctx *ctx = pci_get_drvdata(pdev); + + if (ctx) { + wait_for_completion(&ctx->eeprom_load); + pci_set_drvdata(pdev, NULL); + } +} + +static const struct pci_device_id owl_pci_table[] = { + { PCI_VDEVICE(ATHEROS, 0xff1c) }, /* PCIe */ + { PCI_VDEVICE(ATHEROS, 0xff1d) }, /* PCI */ + { }, +}; +MODULE_DEVICE_TABLE(pci, owl_pci_table); + +static struct pci_driver owl_driver = { + .name = KBUILD_MODNAME, + .id_table = owl_pci_table, + .probe = owl_probe, + .remove = owl_remove, +}; +module_pci_driver(owl_driver); +MODULE_AUTHOR("Christian Lamparter "); +MODULE_DESCRIPTION("External EEPROM data loader for Atheros AR500X to AR92XX"); +MODULE_LICENSE("Dual BSD/GPL"); -- cgit v1.2.3