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/mediatek/mt76/eeprom.c | 359 ++++++++++++++++++++++++++++ 1 file changed, 359 insertions(+) create mode 100644 drivers/net/wireless/mediatek/mt76/eeprom.c (limited to 'drivers/net/wireless/mediatek/mt76/eeprom.c') diff --git a/drivers/net/wireless/mediatek/mt76/eeprom.c b/drivers/net/wireless/mediatek/mt76/eeprom.c new file mode 100644 index 000000000..dce851d42 --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/eeprom.c @@ -0,0 +1,359 @@ +// SPDX-License-Identifier: ISC +/* + * Copyright (C) 2016 Felix Fietkau + */ +#include +#include +#include +#include +#include +#include "mt76.h" + +int mt76_get_of_eeprom(struct mt76_dev *dev, void *eep, int offset, int len) +{ +#if defined(CONFIG_OF) && defined(CONFIG_MTD) + struct device_node *np = dev->dev->of_node; + struct mtd_info *mtd; + const __be32 *list; + const void *data; + const char *part; + phandle phandle; + int size; + size_t retlen; + int ret; + + if (!np) + return -ENOENT; + + data = of_get_property(np, "mediatek,eeprom-data", &size); + if (data) { + if (size > len) + return -EINVAL; + + memcpy(eep, data, size); + + return 0; + } + + list = of_get_property(np, "mediatek,mtd-eeprom", &size); + if (!list) + return -ENOENT; + + phandle = be32_to_cpup(list++); + if (!phandle) + return -ENOENT; + + np = of_find_node_by_phandle(phandle); + if (!np) + return -EINVAL; + + part = of_get_property(np, "label", NULL); + if (!part) + part = np->name; + + mtd = get_mtd_device_nm(part); + if (IS_ERR(mtd)) { + ret = PTR_ERR(mtd); + goto out_put_node; + } + + if (size <= sizeof(*list)) { + ret = -EINVAL; + goto out_put_node; + } + + offset = be32_to_cpup(list); + ret = mtd_read(mtd, offset, len, &retlen, eep); + put_mtd_device(mtd); + if (mtd_is_bitflip(ret)) + ret = 0; + if (ret) { + dev_err(dev->dev, "reading EEPROM from mtd %s failed: %i\n", + part, ret); + goto out_put_node; + } + + if (retlen < len) { + ret = -EINVAL; + goto out_put_node; + } + + if (of_property_read_bool(dev->dev->of_node, "big-endian")) { + u8 *data = (u8 *)eep; + int i; + + /* convert eeprom data in Little Endian */ + for (i = 0; i < round_down(len, 2); i += 2) + put_unaligned_le16(get_unaligned_be16(&data[i]), + &data[i]); + } + +#ifdef CONFIG_NL80211_TESTMODE + dev->test_mtd.name = devm_kstrdup(dev->dev, part, GFP_KERNEL); + dev->test_mtd.offset = offset; +#endif + +out_put_node: + of_node_put(np); + return ret; +#else + return -ENOENT; +#endif +} +EXPORT_SYMBOL_GPL(mt76_get_of_eeprom); + +void +mt76_eeprom_override(struct mt76_phy *phy) +{ + struct mt76_dev *dev = phy->dev; + struct device_node *np = dev->dev->of_node; + + of_get_mac_address(np, phy->macaddr); + + if (!is_valid_ether_addr(phy->macaddr)) { + eth_random_addr(phy->macaddr); + dev_info(dev->dev, + "Invalid MAC address, using random address %pM\n", + phy->macaddr); + } +} +EXPORT_SYMBOL_GPL(mt76_eeprom_override); + +static bool mt76_string_prop_find(struct property *prop, const char *str) +{ + const char *cp = NULL; + + if (!prop || !str || !str[0]) + return false; + + while ((cp = of_prop_next_string(prop, cp)) != NULL) + if (!strcasecmp(cp, str)) + return true; + + return false; +} + +static struct device_node * +mt76_find_power_limits_node(struct mt76_dev *dev) +{ + struct device_node *np = dev->dev->of_node; + const char *const region_names[] = { + [NL80211_DFS_UNSET] = "ww", + [NL80211_DFS_ETSI] = "etsi", + [NL80211_DFS_FCC] = "fcc", + [NL80211_DFS_JP] = "jp", + }; + struct device_node *cur, *fallback = NULL; + const char *region_name = NULL; + + if (dev->region < ARRAY_SIZE(region_names)) + region_name = region_names[dev->region]; + + np = of_get_child_by_name(np, "power-limits"); + if (!np) + return NULL; + + for_each_child_of_node(np, cur) { + struct property *country = of_find_property(cur, "country", NULL); + struct property *regd = of_find_property(cur, "regdomain", NULL); + + if (!country && !regd) { + fallback = cur; + continue; + } + + if (mt76_string_prop_find(country, dev->alpha2) || + mt76_string_prop_find(regd, region_name)) { + of_node_put(np); + return cur; + } + } + + of_node_put(np); + return fallback; +} + +static const __be32 * +mt76_get_of_array(struct device_node *np, char *name, size_t *len, int min) +{ + struct property *prop = of_find_property(np, name, NULL); + + if (!prop || !prop->value || prop->length < min * 4) + return NULL; + + *len = prop->length; + + return prop->value; +} + +static struct device_node * +mt76_find_channel_node(struct device_node *np, struct ieee80211_channel *chan) +{ + struct device_node *cur; + const __be32 *val; + size_t len; + + for_each_child_of_node(np, cur) { + val = mt76_get_of_array(cur, "channels", &len, 2); + if (!val) + continue; + + while (len >= 2 * sizeof(*val)) { + if (chan->hw_value >= be32_to_cpu(val[0]) && + chan->hw_value <= be32_to_cpu(val[1])) + return cur; + + val += 2; + len -= 2 * sizeof(*val); + } + } + + return NULL; +} + +static s8 +mt76_get_txs_delta(struct device_node *np, u8 nss) +{ + const __be32 *val; + size_t len; + + val = mt76_get_of_array(np, "txs-delta", &len, nss); + if (!val) + return 0; + + return be32_to_cpu(val[nss - 1]); +} + +static void +mt76_apply_array_limit(s8 *pwr, size_t pwr_len, const __be32 *data, + s8 target_power, s8 nss_delta, s8 *max_power) +{ + int i; + + if (!data) + return; + + for (i = 0; i < pwr_len; i++) { + pwr[i] = min_t(s8, target_power, + be32_to_cpu(data[i]) + nss_delta); + *max_power = max(*max_power, pwr[i]); + } +} + +static void +mt76_apply_multi_array_limit(s8 *pwr, size_t pwr_len, s8 pwr_num, + const __be32 *data, size_t len, s8 target_power, + s8 nss_delta, s8 *max_power) +{ + int i, cur; + + if (!data) + return; + + len /= 4; + cur = be32_to_cpu(data[0]); + for (i = 0; i < pwr_num; i++) { + if (len < pwr_len + 1) + break; + + mt76_apply_array_limit(pwr + pwr_len * i, pwr_len, data + 1, + target_power, nss_delta, max_power); + if (--cur > 0) + continue; + + data += pwr_len + 1; + len -= pwr_len + 1; + if (!len) + break; + + cur = be32_to_cpu(data[0]); + } +} + +s8 mt76_get_rate_power_limits(struct mt76_phy *phy, + struct ieee80211_channel *chan, + struct mt76_power_limits *dest, + s8 target_power) +{ + struct mt76_dev *dev = phy->dev; + struct device_node *np; + const __be32 *val; + char name[16]; + u32 mcs_rates = dev->drv->mcs_rates; + u32 ru_rates = ARRAY_SIZE(dest->ru[0]); + char band; + size_t len; + s8 max_power = 0; + s8 txs_delta; + + if (!mcs_rates) + mcs_rates = 10; + + memset(dest, target_power, sizeof(*dest)); + + if (!IS_ENABLED(CONFIG_OF)) + return target_power; + + np = mt76_find_power_limits_node(dev); + if (!np) + return target_power; + + switch (chan->band) { + case NL80211_BAND_2GHZ: + band = '2'; + break; + case NL80211_BAND_5GHZ: + band = '5'; + break; + case NL80211_BAND_6GHZ: + band = '6'; + break; + default: + return target_power; + } + + snprintf(name, sizeof(name), "txpower-%cg", band); + np = of_get_child_by_name(np, name); + if (!np) + return target_power; + + np = mt76_find_channel_node(np, chan); + if (!np) + return target_power; + + txs_delta = mt76_get_txs_delta(np, hweight8(phy->antenna_mask)); + + val = mt76_get_of_array(np, "rates-cck", &len, ARRAY_SIZE(dest->cck)); + mt76_apply_array_limit(dest->cck, ARRAY_SIZE(dest->cck), val, + target_power, txs_delta, &max_power); + + val = mt76_get_of_array(np, "rates-ofdm", + &len, ARRAY_SIZE(dest->ofdm)); + mt76_apply_array_limit(dest->ofdm, ARRAY_SIZE(dest->ofdm), val, + target_power, txs_delta, &max_power); + + val = mt76_get_of_array(np, "rates-mcs", &len, mcs_rates + 1); + mt76_apply_multi_array_limit(dest->mcs[0], ARRAY_SIZE(dest->mcs[0]), + ARRAY_SIZE(dest->mcs), val, len, + target_power, txs_delta, &max_power); + + val = mt76_get_of_array(np, "rates-ru", &len, ru_rates + 1); + mt76_apply_multi_array_limit(dest->ru[0], ARRAY_SIZE(dest->ru[0]), + ARRAY_SIZE(dest->ru), val, len, + target_power, txs_delta, &max_power); + + return max_power; +} +EXPORT_SYMBOL_GPL(mt76_get_rate_power_limits); + +int +mt76_eeprom_init(struct mt76_dev *dev, int len) +{ + dev->eeprom.size = len; + dev->eeprom.data = devm_kzalloc(dev->dev, len, GFP_KERNEL); + if (!dev->eeprom.data) + return -ENOMEM; + + return !mt76_get_of_eeprom(dev, dev->eeprom.data, 0, len); +} +EXPORT_SYMBOL_GPL(mt76_eeprom_init); -- cgit v1.2.3