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(). ... --- sound/hda/ext/hdac_ext_controller.c | 393 ++++++++++++++++++++++++++++++++++++ 1 file changed, 393 insertions(+) create mode 100644 sound/hda/ext/hdac_ext_controller.c (limited to 'sound/hda/ext/hdac_ext_controller.c') diff --git a/sound/hda/ext/hdac_ext_controller.c b/sound/hda/ext/hdac_ext_controller.c new file mode 100644 index 000000000..6199bb60c --- /dev/null +++ b/sound/hda/ext/hdac_ext_controller.c @@ -0,0 +1,393 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * hdac-ext-controller.c - HD-audio extended controller functions. + * + * Copyright (C) 2014-2015 Intel Corp + * Author: Jeeja KP + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ + +#include +#include +#include +#include + +/* + * processing pipe helpers - these helpers are useful for dealing with HDA + * new capability of processing pipelines + */ + +/** + * snd_hdac_ext_bus_ppcap_enable - enable/disable processing pipe capability + * @bus: the pointer to HDAC bus object + * @enable: flag to turn on/off the capability + */ +void snd_hdac_ext_bus_ppcap_enable(struct hdac_bus *bus, bool enable) +{ + + if (!bus->ppcap) { + dev_err(bus->dev, "Address of PP capability is NULL"); + return; + } + + if (enable) + snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, + AZX_PPCTL_GPROCEN, AZX_PPCTL_GPROCEN); + else + snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, + AZX_PPCTL_GPROCEN, 0); +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_ppcap_enable); + +/** + * snd_hdac_ext_bus_ppcap_int_enable - ppcap interrupt enable/disable + * @bus: the pointer to HDAC bus object + * @enable: flag to enable/disable interrupt + */ +void snd_hdac_ext_bus_ppcap_int_enable(struct hdac_bus *bus, bool enable) +{ + + if (!bus->ppcap) { + dev_err(bus->dev, "Address of PP capability is NULL\n"); + return; + } + + if (enable) + snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, + AZX_PPCTL_PIE, AZX_PPCTL_PIE); + else + snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, + AZX_PPCTL_PIE, 0); +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_ppcap_int_enable); + +/* + * Multilink helpers - these helpers are useful for dealing with HDA + * new multilink capability + */ + +/** + * snd_hdac_ext_bus_get_ml_capabilities - get multilink capability + * @bus: the pointer to HDAC bus object + * + * This will parse all links and read the mlink capabilities and add them + * in hlink_list of extended hdac bus + * Note: this will be freed on bus exit by driver + */ +int snd_hdac_ext_bus_get_ml_capabilities(struct hdac_bus *bus) +{ + int idx; + u32 link_count; + struct hdac_ext_link *hlink; + + link_count = readl(bus->mlcap + AZX_REG_ML_MLCD) + 1; + + dev_dbg(bus->dev, "In %s Link count: %d\n", __func__, link_count); + + for (idx = 0; idx < link_count; idx++) { + hlink = kzalloc(sizeof(*hlink), GFP_KERNEL); + if (!hlink) + return -ENOMEM; + hlink->index = idx; + hlink->bus = bus; + hlink->ml_addr = bus->mlcap + AZX_ML_BASE + + (AZX_ML_INTERVAL * idx); + hlink->lcaps = readl(hlink->ml_addr + AZX_REG_ML_LCAP); + hlink->lsdiid = readw(hlink->ml_addr + AZX_REG_ML_LSDIID); + + /* since link in On, update the ref */ + hlink->ref_count = 1; + + list_add_tail(&hlink->list, &bus->hlink_list); + } + + return 0; +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_get_ml_capabilities); + +/** + * snd_hdac_ext_link_free_all- free hdac extended link objects + * + * @bus: the pointer to HDAC bus object + */ + +void snd_hdac_ext_link_free_all(struct hdac_bus *bus) +{ + struct hdac_ext_link *hlink; + + while (!list_empty(&bus->hlink_list)) { + hlink = list_first_entry(&bus->hlink_list, struct hdac_ext_link, list); + list_del(&hlink->list); + kfree(hlink); + } +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_link_free_all); + +/** + * snd_hdac_ext_bus_get_hlink_by_addr - get hlink at specified address + * @bus: hlink's parent bus device + * @addr: codec device address + * + * Returns hlink object or NULL if matching hlink is not found. + */ +struct hdac_ext_link *snd_hdac_ext_bus_get_hlink_by_addr(struct hdac_bus *bus, int addr) +{ + struct hdac_ext_link *hlink; + + list_for_each_entry(hlink, &bus->hlink_list, list) + if (hlink->lsdiid & (0x1 << addr)) + return hlink; + return NULL; +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_get_hlink_by_addr); + +/** + * snd_hdac_ext_bus_get_hlink_by_name - get hlink based on codec name + * @bus: the pointer to HDAC bus object + * @codec_name: codec name + */ +struct hdac_ext_link *snd_hdac_ext_bus_get_hlink_by_name(struct hdac_bus *bus, + const char *codec_name) +{ + int bus_idx, addr; + + if (sscanf(codec_name, "ehdaudio%dD%d", &bus_idx, &addr) != 2) + return NULL; + if (bus->idx != bus_idx) + return NULL; + if (addr < 0 || addr > 31) + return NULL; + + return snd_hdac_ext_bus_get_hlink_by_addr(bus, addr); +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_get_hlink_by_name); + +static int check_hdac_link_power_active(struct hdac_ext_link *hlink, bool enable) +{ + int timeout; + u32 val; + int mask = (1 << AZX_ML_LCTL_CPA_SHIFT); + + udelay(3); + timeout = 150; + + do { + val = readl(hlink->ml_addr + AZX_REG_ML_LCTL); + if (enable) { + if (((val & mask) >> AZX_ML_LCTL_CPA_SHIFT)) + return 0; + } else { + if (!((val & mask) >> AZX_ML_LCTL_CPA_SHIFT)) + return 0; + } + udelay(3); + } while (--timeout); + + return -EIO; +} + +/** + * snd_hdac_ext_bus_link_power_up -power up hda link + * @hlink: HD-audio extended link + */ +int snd_hdac_ext_bus_link_power_up(struct hdac_ext_link *hlink) +{ + snd_hdac_updatel(hlink->ml_addr, AZX_REG_ML_LCTL, + AZX_ML_LCTL_SPA, AZX_ML_LCTL_SPA); + + return check_hdac_link_power_active(hlink, true); +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_up); + +/** + * snd_hdac_ext_bus_link_power_down -power down hda link + * @hlink: HD-audio extended link + */ +int snd_hdac_ext_bus_link_power_down(struct hdac_ext_link *hlink) +{ + snd_hdac_updatel(hlink->ml_addr, AZX_REG_ML_LCTL, AZX_ML_LCTL_SPA, 0); + + return check_hdac_link_power_active(hlink, false); +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_down); + +/** + * snd_hdac_ext_bus_link_power_up_all -power up all hda link + * @bus: the pointer to HDAC bus object + */ +int snd_hdac_ext_bus_link_power_up_all(struct hdac_bus *bus) +{ + struct hdac_ext_link *hlink = NULL; + int ret; + + list_for_each_entry(hlink, &bus->hlink_list, list) { + ret = snd_hdac_ext_bus_link_power_up(hlink); + if (ret < 0) + return ret; + } + + return 0; +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_up_all); + +/** + * snd_hdac_ext_bus_link_power_down_all -power down all hda link + * @bus: the pointer to HDAC bus object + */ +int snd_hdac_ext_bus_link_power_down_all(struct hdac_bus *bus) +{ + struct hdac_ext_link *hlink = NULL; + int ret; + + list_for_each_entry(hlink, &bus->hlink_list, list) { + ret = snd_hdac_ext_bus_link_power_down(hlink); + if (ret < 0) + return ret; + } + + return 0; +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_down_all); + +/** + * snd_hdac_ext_bus_link_set_stream_id - maps stream id to link output + * @link: HD-audio ext link to set up + * @stream: stream id + */ +void snd_hdac_ext_bus_link_set_stream_id(struct hdac_ext_link *link, + int stream) +{ + snd_hdac_updatew(link->ml_addr, AZX_REG_ML_LOSIDV, (1 << stream), 1 << stream); +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_set_stream_id); + +/** + * snd_hdac_ext_bus_link_clear_stream_id - maps stream id to link output + * @link: HD-audio ext link to set up + * @stream: stream id + */ +void snd_hdac_ext_bus_link_clear_stream_id(struct hdac_ext_link *link, + int stream) +{ + snd_hdac_updatew(link->ml_addr, AZX_REG_ML_LOSIDV, (1 << stream), 0); +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_clear_stream_id); + +int snd_hdac_ext_bus_link_get(struct hdac_bus *bus, + struct hdac_ext_link *hlink) +{ + unsigned long codec_mask; + int ret = 0; + + mutex_lock(&bus->lock); + + /* + * if we move from 0 to 1, count will be 1 so power up this link + * as well, also check the dma status and trigger that + */ + if (++hlink->ref_count == 1) { + if (!bus->cmd_dma_state) { + snd_hdac_bus_init_cmd_io(bus); + bus->cmd_dma_state = true; + } + + ret = snd_hdac_ext_bus_link_power_up(hlink); + + /* + * clear the register to invalidate all the output streams + */ + snd_hdac_updatew(hlink->ml_addr, AZX_REG_ML_LOSIDV, + AZX_ML_LOSIDV_STREAM_MASK, 0); + /* + * wait for 521usec for codec to report status + * HDA spec section 4.3 - Codec Discovery + */ + udelay(521); + codec_mask = snd_hdac_chip_readw(bus, STATESTS); + dev_dbg(bus->dev, "codec_mask = 0x%lx\n", codec_mask); + snd_hdac_chip_writew(bus, STATESTS, codec_mask); + if (!bus->codec_mask) + bus->codec_mask = codec_mask; + } + + mutex_unlock(&bus->lock); + return ret; +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_get); + +int snd_hdac_ext_bus_link_put(struct hdac_bus *bus, + struct hdac_ext_link *hlink) +{ + int ret = 0; + struct hdac_ext_link *hlink_tmp; + bool link_up = false; + + mutex_lock(&bus->lock); + + /* + * if we move from 1 to 0, count will be 0 + * so power down this link as well + */ + if (--hlink->ref_count == 0) { + ret = snd_hdac_ext_bus_link_power_down(hlink); + + /* + * now check if all links are off, if so turn off + * cmd dma as well + */ + list_for_each_entry(hlink_tmp, &bus->hlink_list, list) { + if (hlink_tmp->ref_count) { + link_up = true; + break; + } + } + + if (!link_up) { + snd_hdac_bus_stop_cmd_io(bus); + bus->cmd_dma_state = false; + } + } + + mutex_unlock(&bus->lock); + return ret; +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_put); + +static void hdac_ext_codec_link_up(struct hdac_device *codec) +{ + const char *devname = dev_name(&codec->dev); + struct hdac_ext_link *hlink = + snd_hdac_ext_bus_get_hlink_by_name(codec->bus, devname); + + if (hlink) + snd_hdac_ext_bus_link_get(codec->bus, hlink); +} + +static void hdac_ext_codec_link_down(struct hdac_device *codec) +{ + const char *devname = dev_name(&codec->dev); + struct hdac_ext_link *hlink = + snd_hdac_ext_bus_get_hlink_by_name(codec->bus, devname); + + if (hlink) + snd_hdac_ext_bus_link_put(codec->bus, hlink); +} + +void snd_hdac_ext_bus_link_power(struct hdac_device *codec, bool enable) +{ + struct hdac_bus *bus = codec->bus; + bool oldstate = test_bit(codec->addr, &bus->codec_powered); + + if (enable == oldstate) + return; + + snd_hdac_bus_link_power(codec, enable); + + if (enable) + hdac_ext_codec_link_up(codec); + else + hdac_ext_codec_link_down(codec); +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power); -- cgit v1.2.3