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/wireless/ti/wl1251/spi.c | 347 +++++++++++++++++++++++++++++++++++ 1 file changed, 347 insertions(+) create mode 100644 drivers/net/wireless/ti/wl1251/spi.c (limited to 'drivers/net/wireless/ti/wl1251/spi.c') diff --git a/drivers/net/wireless/ti/wl1251/spi.c b/drivers/net/wireless/ti/wl1251/spi.c new file mode 100644 index 000000000..29292f06b --- /dev/null +++ b/drivers/net/wireless/ti/wl1251/spi.c @@ -0,0 +1,347 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * This file is part of wl1251 + * + * Copyright (C) 2008 Nokia Corporation + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "wl1251.h" +#include "reg.h" +#include "spi.h" + +struct wl1251_spi { + struct spi_device *spi; + struct gpio_desc *power_gpio; +}; + +static irqreturn_t wl1251_irq(int irq, void *cookie) +{ + struct wl1251 *wl; + + wl1251_debug(DEBUG_IRQ, "IRQ"); + + wl = cookie; + + ieee80211_queue_work(wl->hw, &wl->irq_work); + + return IRQ_HANDLED; +} + +static void wl1251_spi_reset(struct wl1251 *wl) +{ + struct wl1251_spi *wl_spi = wl->if_priv; + u8 *cmd; + struct spi_transfer t; + struct spi_message m; + + cmd = kzalloc(WSPI_INIT_CMD_LEN, GFP_KERNEL); + if (!cmd) { + wl1251_error("could not allocate cmd for spi reset"); + return; + } + + memset(&t, 0, sizeof(t)); + spi_message_init(&m); + + memset(cmd, 0xff, WSPI_INIT_CMD_LEN); + + t.tx_buf = cmd; + t.len = WSPI_INIT_CMD_LEN; + spi_message_add_tail(&t, &m); + + spi_sync(wl_spi->spi, &m); + + wl1251_dump(DEBUG_SPI, "spi reset -> ", cmd, WSPI_INIT_CMD_LEN); + + kfree(cmd); +} + +static void wl1251_spi_wake(struct wl1251 *wl) +{ + struct wl1251_spi *wl_spi = wl->if_priv; + struct spi_transfer t; + struct spi_message m; + u8 *cmd = kzalloc(WSPI_INIT_CMD_LEN, GFP_KERNEL); + + if (!cmd) { + wl1251_error("could not allocate cmd for spi init"); + return; + } + + memset(&t, 0, sizeof(t)); + spi_message_init(&m); + + /* Set WSPI_INIT_COMMAND + * the data is being send from the MSB to LSB + */ + cmd[0] = 0xff; + cmd[1] = 0xff; + cmd[2] = WSPI_INIT_CMD_START | WSPI_INIT_CMD_TX; + cmd[3] = 0; + cmd[4] = 0; + cmd[5] = HW_ACCESS_WSPI_INIT_CMD_MASK << 3; + cmd[5] |= HW_ACCESS_WSPI_FIXED_BUSY_LEN & WSPI_INIT_CMD_FIXEDBUSY_LEN; + + cmd[6] = WSPI_INIT_CMD_IOD | WSPI_INIT_CMD_IP | WSPI_INIT_CMD_CS + | WSPI_INIT_CMD_WSPI | WSPI_INIT_CMD_WS; + + if (HW_ACCESS_WSPI_FIXED_BUSY_LEN == 0) + cmd[6] |= WSPI_INIT_CMD_DIS_FIXEDBUSY; + else + cmd[6] |= WSPI_INIT_CMD_EN_FIXEDBUSY; + + cmd[7] = crc7_be(0, cmd+2, WSPI_INIT_CMD_CRC_LEN) | WSPI_INIT_CMD_END; + /* + * The above is the logical order; it must actually be stored + * in the buffer byte-swapped. + */ + __swab32s((u32 *)cmd); + __swab32s((u32 *)cmd+1); + + t.tx_buf = cmd; + t.len = WSPI_INIT_CMD_LEN; + spi_message_add_tail(&t, &m); + + spi_sync(wl_spi->spi, &m); + + wl1251_dump(DEBUG_SPI, "spi init -> ", cmd, WSPI_INIT_CMD_LEN); + + kfree(cmd); +} + +static void wl1251_spi_reset_wake(struct wl1251 *wl) +{ + wl1251_spi_reset(wl); + wl1251_spi_wake(wl); +} + +static void wl1251_spi_read(struct wl1251 *wl, int addr, void *buf, + size_t len) +{ + struct wl1251_spi *wl_spi = wl->if_priv; + struct spi_transfer t[3]; + struct spi_message m; + u8 *busy_buf; + u32 *cmd; + + cmd = &wl->buffer_cmd; + busy_buf = wl->buffer_busyword; + + *cmd = 0; + *cmd |= WSPI_CMD_READ; + *cmd |= (len << WSPI_CMD_BYTE_LENGTH_OFFSET) & WSPI_CMD_BYTE_LENGTH; + *cmd |= addr & WSPI_CMD_BYTE_ADDR; + + spi_message_init(&m); + memset(t, 0, sizeof(t)); + + t[0].tx_buf = cmd; + t[0].len = 4; + spi_message_add_tail(&t[0], &m); + + /* Busy and non busy words read */ + t[1].rx_buf = busy_buf; + t[1].len = WL1251_BUSY_WORD_LEN; + spi_message_add_tail(&t[1], &m); + + t[2].rx_buf = buf; + t[2].len = len; + spi_message_add_tail(&t[2], &m); + + spi_sync(wl_spi->spi, &m); + + /* FIXME: check busy words */ + + wl1251_dump(DEBUG_SPI, "spi_read cmd -> ", cmd, sizeof(*cmd)); + wl1251_dump(DEBUG_SPI, "spi_read buf <- ", buf, len); +} + +static void wl1251_spi_write(struct wl1251 *wl, int addr, void *buf, + size_t len) +{ + struct wl1251_spi *wl_spi = wl->if_priv; + struct spi_transfer t[2]; + struct spi_message m; + u32 *cmd; + + cmd = &wl->buffer_cmd; + + *cmd = 0; + *cmd |= WSPI_CMD_WRITE; + *cmd |= (len << WSPI_CMD_BYTE_LENGTH_OFFSET) & WSPI_CMD_BYTE_LENGTH; + *cmd |= addr & WSPI_CMD_BYTE_ADDR; + + spi_message_init(&m); + memset(t, 0, sizeof(t)); + + t[0].tx_buf = cmd; + t[0].len = sizeof(*cmd); + spi_message_add_tail(&t[0], &m); + + t[1].tx_buf = buf; + t[1].len = len; + spi_message_add_tail(&t[1], &m); + + spi_sync(wl_spi->spi, &m); + + wl1251_dump(DEBUG_SPI, "spi_write cmd -> ", cmd, sizeof(*cmd)); + wl1251_dump(DEBUG_SPI, "spi_write buf -> ", buf, len); +} + +static void wl1251_spi_enable_irq(struct wl1251 *wl) +{ + return enable_irq(wl->irq); +} + +static void wl1251_spi_disable_irq(struct wl1251 *wl) +{ + return disable_irq(wl->irq); +} + +static int wl1251_spi_set_power(struct wl1251 *wl, bool enable) +{ + struct wl1251_spi *wl_spi = wl->if_priv; + + if (wl_spi->power_gpio) + gpiod_set_value_cansleep(wl_spi->power_gpio, enable); + + return 0; +} + +static const struct wl1251_if_operations wl1251_spi_ops = { + .read = wl1251_spi_read, + .write = wl1251_spi_write, + .reset = wl1251_spi_reset_wake, + .enable_irq = wl1251_spi_enable_irq, + .disable_irq = wl1251_spi_disable_irq, + .power = wl1251_spi_set_power, +}; + +static int wl1251_spi_probe(struct spi_device *spi) +{ + struct device_node *np = spi->dev.of_node; + struct ieee80211_hw *hw; + struct wl1251_spi *wl_spi; + struct wl1251 *wl; + int ret; + + if (!np) + return -ENODEV; + + wl_spi = devm_kzalloc(&spi->dev, sizeof(*wl_spi), GFP_KERNEL); + if (!wl_spi) + return -ENOMEM; + + wl_spi->spi = spi; + + hw = wl1251_alloc_hw(); + if (IS_ERR(hw)) + return PTR_ERR(hw); + + wl = hw->priv; + + SET_IEEE80211_DEV(hw, &spi->dev); + spi_set_drvdata(spi, wl); + wl->if_priv = wl_spi; + wl->if_ops = &wl1251_spi_ops; + + /* This is the only SPI value that we need to set here, the rest + * comes from the board-peripherals file + */ + spi->bits_per_word = 32; + + ret = spi_setup(spi); + if (ret < 0) { + wl1251_error("spi_setup failed"); + goto out_free; + } + + wl->use_eeprom = of_property_read_bool(np, "ti,wl1251-has-eeprom"); + + wl_spi->power_gpio = devm_gpiod_get_optional(&spi->dev, "ti,power", + GPIOD_OUT_LOW); + ret = PTR_ERR_OR_ZERO(wl_spi->power_gpio); + if (ret) { + if (ret != -EPROBE_DEFER) + wl1251_error("Failed to request gpio: %d\n", ret); + goto out_free; + } + + gpiod_set_consumer_name(wl_spi->power_gpio, "wl1251 power"); + + wl->irq = spi->irq; + if (wl->irq < 0) { + wl1251_error("irq missing in platform data"); + ret = -ENODEV; + goto out_free; + } + + irq_set_status_flags(wl->irq, IRQ_NOAUTOEN); + ret = devm_request_irq(&spi->dev, wl->irq, wl1251_irq, 0, + DRIVER_NAME, wl); + if (ret < 0) { + wl1251_error("request_irq() failed: %d", ret); + goto out_free; + } + + irq_set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING); + + wl->vio = devm_regulator_get(&spi->dev, "vio"); + if (IS_ERR(wl->vio)) { + ret = PTR_ERR(wl->vio); + wl1251_error("vio regulator missing: %d", ret); + goto out_free; + } + + ret = regulator_enable(wl->vio); + if (ret) + goto out_free; + + ret = wl1251_init_ieee80211(wl); + if (ret) + goto disable_regulator; + + return 0; + +disable_regulator: + regulator_disable(wl->vio); +out_free: + ieee80211_free_hw(hw); + + return ret; +} + +static void wl1251_spi_remove(struct spi_device *spi) +{ + struct wl1251 *wl = spi_get_drvdata(spi); + + wl1251_free_hw(wl); + regulator_disable(wl->vio); +} + +static struct spi_driver wl1251_spi_driver = { + .driver = { + .name = DRIVER_NAME, + }, + + .probe = wl1251_spi_probe, + .remove = wl1251_spi_remove, +}; + +module_spi_driver(wl1251_spi_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Kalle Valo "); +MODULE_ALIAS("spi:wl1251"); -- cgit v1.2.3