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/ath/ath9k/ar9003_rtt.c | 258 ++++++++++++++++++++++++++++ 1 file changed, 258 insertions(+) create mode 100644 drivers/net/wireless/ath/ath9k/ar9003_rtt.c (limited to 'drivers/net/wireless/ath/ath9k/ar9003_rtt.c') diff --git a/drivers/net/wireless/ath/ath9k/ar9003_rtt.c b/drivers/net/wireless/ath/ath9k/ar9003_rtt.c new file mode 100644 index 000000000..e4d11fa7f --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/ar9003_rtt.c @@ -0,0 +1,258 @@ +/* + * Copyright (c) 2010-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "hw.h" +#include "hw-ops.h" +#include "ar9003_phy.h" +#include "ar9003_rtt.h" + +#define RTT_RESTORE_TIMEOUT 1000 +#define RTT_ACCESS_TIMEOUT 100 +#define RTT_BAD_VALUE 0x0bad0bad + +/* + * RTT (Radio Retention Table) hardware implementation information + * + * There is an internal table (i.e. the rtt) for each chain (or bank). + * Each table contains 6 entries and each entry is corresponding to + * a specific calibration parameter as depicted below. + * 0~2 - DC offset DAC calibration: loop, low, high (offsetI/Q_...) + * 3 - Filter cal (filterfc) + * 4 - RX gain settings + * 5 - Peak detector offset calibration (agc_caldac) + */ + +void ar9003_hw_rtt_enable(struct ath_hw *ah) +{ + REG_WRITE(ah, AR_PHY_RTT_CTRL, 1); +} + +void ar9003_hw_rtt_disable(struct ath_hw *ah) +{ + REG_WRITE(ah, AR_PHY_RTT_CTRL, 0); +} + +void ar9003_hw_rtt_set_mask(struct ath_hw *ah, u32 rtt_mask) +{ + REG_RMW_FIELD(ah, AR_PHY_RTT_CTRL, + AR_PHY_RTT_CTRL_RESTORE_MASK, rtt_mask); +} + +bool ar9003_hw_rtt_force_restore(struct ath_hw *ah) +{ + if (!ath9k_hw_wait(ah, AR_PHY_RTT_CTRL, + AR_PHY_RTT_CTRL_FORCE_RADIO_RESTORE, + 0, RTT_RESTORE_TIMEOUT)) + return false; + + REG_RMW_FIELD(ah, AR_PHY_RTT_CTRL, + AR_PHY_RTT_CTRL_FORCE_RADIO_RESTORE, 1); + + if (!ath9k_hw_wait(ah, AR_PHY_RTT_CTRL, + AR_PHY_RTT_CTRL_FORCE_RADIO_RESTORE, + 0, RTT_RESTORE_TIMEOUT)) + return false; + + return true; +} + +static void ar9003_hw_rtt_load_hist_entry(struct ath_hw *ah, u8 chain, + u32 index, u32 data28) +{ + u32 val; + + val = SM(data28, AR_PHY_RTT_SW_RTT_TABLE_DATA); + REG_WRITE(ah, AR_PHY_RTT_TABLE_SW_INTF_1_B(chain), val); + + val = SM(0, AR_PHY_RTT_SW_RTT_TABLE_ACCESS) | + SM(1, AR_PHY_RTT_SW_RTT_TABLE_WRITE) | + SM(index, AR_PHY_RTT_SW_RTT_TABLE_ADDR); + REG_WRITE(ah, AR_PHY_RTT_TABLE_SW_INTF_B(chain), val); + udelay(1); + + val |= SM(1, AR_PHY_RTT_SW_RTT_TABLE_ACCESS); + REG_WRITE(ah, AR_PHY_RTT_TABLE_SW_INTF_B(chain), val); + udelay(1); + + if (!ath9k_hw_wait(ah, AR_PHY_RTT_TABLE_SW_INTF_B(chain), + AR_PHY_RTT_SW_RTT_TABLE_ACCESS, 0, + RTT_ACCESS_TIMEOUT)) + return; + + val &= ~SM(1, AR_PHY_RTT_SW_RTT_TABLE_WRITE); + REG_WRITE(ah, AR_PHY_RTT_TABLE_SW_INTF_B(chain), val); + udelay(1); + + ath9k_hw_wait(ah, AR_PHY_RTT_TABLE_SW_INTF_B(chain), + AR_PHY_RTT_SW_RTT_TABLE_ACCESS, 0, + RTT_ACCESS_TIMEOUT); +} + +void ar9003_hw_rtt_load_hist(struct ath_hw *ah) +{ + int chain, i; + + for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) { + if (!(ah->caps.rx_chainmask & (1 << chain))) + continue; + for (i = 0; i < MAX_RTT_TABLE_ENTRY; i++) { + ar9003_hw_rtt_load_hist_entry(ah, chain, i, + ah->caldata->rtt_table[chain][i]); + ath_dbg(ath9k_hw_common(ah), CALIBRATE, + "Load RTT value at idx %d, chain %d: 0x%x\n", + i, chain, ah->caldata->rtt_table[chain][i]); + } + } +} + +static void ar9003_hw_patch_rtt(struct ath_hw *ah, int index, int chain) +{ + int agc, caldac; + + if (!test_bit(SW_PKDET_DONE, &ah->caldata->cal_flags)) + return; + + if ((index != 5) || (chain >= 2)) + return; + + agc = REG_READ_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain), + AR_PHY_65NM_RXRF_AGC_AGC_OVERRIDE); + if (!agc) + return; + + caldac = ah->caldata->caldac[chain]; + ah->caldata->rtt_table[chain][index] &= 0xFFFF05FF; + caldac = (caldac & 0x20) | ((caldac & 0x1F) << 7); + ah->caldata->rtt_table[chain][index] |= (caldac << 4); +} + +static int ar9003_hw_rtt_fill_hist_entry(struct ath_hw *ah, u8 chain, u32 index) +{ + u32 val; + + val = SM(0, AR_PHY_RTT_SW_RTT_TABLE_ACCESS) | + SM(0, AR_PHY_RTT_SW_RTT_TABLE_WRITE) | + SM(index, AR_PHY_RTT_SW_RTT_TABLE_ADDR); + + REG_WRITE(ah, AR_PHY_RTT_TABLE_SW_INTF_B(chain), val); + udelay(1); + + val |= SM(1, AR_PHY_RTT_SW_RTT_TABLE_ACCESS); + REG_WRITE(ah, AR_PHY_RTT_TABLE_SW_INTF_B(chain), val); + udelay(1); + + if (!ath9k_hw_wait(ah, AR_PHY_RTT_TABLE_SW_INTF_B(chain), + AR_PHY_RTT_SW_RTT_TABLE_ACCESS, 0, + RTT_ACCESS_TIMEOUT)) + return RTT_BAD_VALUE; + + val = MS(REG_READ(ah, AR_PHY_RTT_TABLE_SW_INTF_1_B(chain)), + AR_PHY_RTT_SW_RTT_TABLE_DATA); + + + return val; +} + +void ar9003_hw_rtt_fill_hist(struct ath_hw *ah) +{ + int chain, i; + + for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) { + if (!(ah->caps.rx_chainmask & (1 << chain))) + continue; + for (i = 0; i < MAX_RTT_TABLE_ENTRY; i++) { + ah->caldata->rtt_table[chain][i] = + ar9003_hw_rtt_fill_hist_entry(ah, chain, i); + + ar9003_hw_patch_rtt(ah, i, chain); + + ath_dbg(ath9k_hw_common(ah), CALIBRATE, + "RTT value at idx %d, chain %d is: 0x%x\n", + i, chain, ah->caldata->rtt_table[chain][i]); + } + } + + set_bit(RTT_DONE, &ah->caldata->cal_flags); +} + +void ar9003_hw_rtt_clear_hist(struct ath_hw *ah) +{ + int chain, i; + + for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) { + if (!(ah->caps.rx_chainmask & (1 << chain))) + continue; + for (i = 0; i < MAX_RTT_TABLE_ENTRY; i++) + ar9003_hw_rtt_load_hist_entry(ah, chain, i, 0); + } + + if (ah->caldata) + clear_bit(RTT_DONE, &ah->caldata->cal_flags); +} + +bool ar9003_hw_rtt_restore(struct ath_hw *ah, struct ath9k_channel *chan) +{ + bool restore; + + if (!ah->caldata) + return false; + + if (test_bit(SW_PKDET_DONE, &ah->caldata->cal_flags)) { + if (IS_CHAN_2GHZ(chan)){ + REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(0), + AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR, + ah->caldata->caldac[0]); + REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(1), + AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR, + ah->caldata->caldac[1]); + } else { + REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(0), + AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR, + ah->caldata->caldac[0]); + REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(1), + AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR, + ah->caldata->caldac[1]); + } + REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(1), + AR_PHY_65NM_RXRF_AGC_AGC_OVERRIDE, 0x1); + REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(0), + AR_PHY_65NM_RXRF_AGC_AGC_OVERRIDE, 0x1); + } + + if (!test_bit(RTT_DONE, &ah->caldata->cal_flags)) + return false; + + ar9003_hw_rtt_enable(ah); + + if (test_bit(SW_PKDET_DONE, &ah->caldata->cal_flags)) + ar9003_hw_rtt_set_mask(ah, 0x30); + else + ar9003_hw_rtt_set_mask(ah, 0x10); + + if (!ath9k_hw_rfbus_req(ah)) { + ath_err(ath9k_hw_common(ah), "Could not stop baseband\n"); + restore = false; + goto fail; + } + + ar9003_hw_rtt_load_hist(ah); + restore = ar9003_hw_rtt_force_restore(ah); + +fail: + ath9k_hw_rfbus_done(ah); + ar9003_hw_rtt_disable(ah); + return restore; +} -- cgit v1.2.3