Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

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().
  ...

1 files changed, 298 insertions, 0 deletions

diff --git a/sound/soc/intel/catpt/ipc.c b/sound/soc/intel/catpt/ipc.c
new file mode 100644
index 000000000..5b718a846
--- /dev/null
+++ b/sound/soc/intel/catpt/ipc.c
@@ -0,0 +1,298 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright(c) 2020 Intel Corporation. All rights reserved.
+//
+// Author: Cezary Rojewski <cezary.rojewski@intel.com>
+//
+
+#include <linux/irqreturn.h>
+#include "core.h"
+#include "messages.h"
+#include "registers.h"
+#include "trace.h"
+
+#define CATPT_IPC_TIMEOUT_MS	300
+
+void catpt_ipc_init(struct catpt_ipc *ipc, struct device *dev)
+{
+	ipc->dev = dev;
+	ipc->ready = false;
+	ipc->default_timeout = CATPT_IPC_TIMEOUT_MS;
+	init_completion(&ipc->done_completion);
+	init_completion(&ipc->busy_completion);
+	spin_lock_init(&ipc->lock);
+	mutex_init(&ipc->mutex);
+}
+
+static int catpt_ipc_arm(struct catpt_ipc *ipc, struct catpt_fw_ready *config)
+{
+	/*
+	 * Both tx and rx are put into and received from outbox. Inbox is
+	 * only used for notifications where payload size is known upfront,
+	 * thus no separate buffer is allocated for it.
+	 */
+	ipc->rx.data = devm_kzalloc(ipc->dev, config->outbox_size, GFP_KERNEL);
+	if (!ipc->rx.data)
+		return -ENOMEM;
+
+	memcpy(&ipc->config, config, sizeof(*config));
+	ipc->ready = true;
+
+	return 0;
+}
+
+static void catpt_ipc_msg_init(struct catpt_ipc *ipc,
+			       struct catpt_ipc_msg *reply)
+{
+	lockdep_assert_held(&ipc->lock);
+
+	ipc->rx.header = 0;
+	ipc->rx.size = reply ? reply->size : 0;
+	reinit_completion(&ipc->done_completion);
+	reinit_completion(&ipc->busy_completion);
+}
+
+static void catpt_dsp_send_tx(struct catpt_dev *cdev,
+			      const struct catpt_ipc_msg *tx)
+{
+	u32 header = tx->header | CATPT_IPCC_BUSY;
+
+	trace_catpt_ipc_request(header);
+	trace_catpt_ipc_payload(tx->data, tx->size);
+
+	memcpy_toio(catpt_outbox_addr(cdev), tx->data, tx->size);
+	catpt_writel_shim(cdev, IPCC, header);
+}
+
+static int catpt_wait_msg_completion(struct catpt_dev *cdev, int timeout)
+{
+	struct catpt_ipc *ipc = &cdev->ipc;
+	int ret;
+
+	ret = wait_for_completion_timeout(&ipc->done_completion,
+					  msecs_to_jiffies(timeout));
+	if (!ret)
+		return -ETIMEDOUT;
+	if (ipc->rx.rsp.status != CATPT_REPLY_PENDING)
+		return 0;
+
+	/* wait for delayed reply */
+	ret = wait_for_completion_timeout(&ipc->busy_completion,
+					  msecs_to_jiffies(timeout));
+	return ret ? 0 : -ETIMEDOUT;
+}
+
+static int catpt_dsp_do_send_msg(struct catpt_dev *cdev,
+				 struct catpt_ipc_msg request,
+				 struct catpt_ipc_msg *reply, int timeout)
+{
+	struct catpt_ipc *ipc = &cdev->ipc;
+	unsigned long flags;
+	int ret;
+
+	if (!ipc->ready)
+		return -EPERM;
+	if (request.size > ipc->config.outbox_size ||
+	    (reply && reply->size > ipc->config.outbox_size))
+		return -EINVAL;
+
+	spin_lock_irqsave(&ipc->lock, flags);
+	catpt_ipc_msg_init(ipc, reply);
+	catpt_dsp_send_tx(cdev, &request);
+	spin_unlock_irqrestore(&ipc->lock, flags);
+
+	ret = catpt_wait_msg_completion(cdev, timeout);
+	if (ret) {
+		dev_crit(cdev->dev, "communication severed: %d, rebooting dsp..\n",
+			 ret);
+		ipc->ready = false;
+		/* TODO: attempt recovery */
+		return ret;
+	}
+
+	ret = ipc->rx.rsp.status;
+	if (reply) {
+		reply->header = ipc->rx.header;
+
+		if (!ret && reply->data)
+			memcpy(reply->data, ipc->rx.data, reply->size);
+	}
+
+	return ret;
+}
+
+int catpt_dsp_send_msg_timeout(struct catpt_dev *cdev,
+			       struct catpt_ipc_msg request,
+			       struct catpt_ipc_msg *reply, int timeout)
+{
+	struct catpt_ipc *ipc = &cdev->ipc;
+	int ret;
+
+	mutex_lock(&ipc->mutex);
+	ret = catpt_dsp_do_send_msg(cdev, request, reply, timeout);
+	mutex_unlock(&ipc->mutex);
+
+	return ret;
+}
+
+int catpt_dsp_send_msg(struct catpt_dev *cdev, struct catpt_ipc_msg request,
+		       struct catpt_ipc_msg *reply)
+{
+	return catpt_dsp_send_msg_timeout(cdev, request, reply,
+					  cdev->ipc.default_timeout);
+}
+
+static void
+catpt_dsp_notify_stream(struct catpt_dev *cdev, union catpt_notify_msg msg)
+{
+	struct catpt_stream_runtime *stream;
+	struct catpt_notify_position pos;
+	struct catpt_notify_glitch glitch;
+
+	stream = catpt_stream_find(cdev, msg.stream_hw_id);
+	if (!stream) {
+		dev_warn(cdev->dev, "notify %d for non-existent stream %d\n",
+			 msg.notify_reason, msg.stream_hw_id);
+		return;
+	}
+
+	switch (msg.notify_reason) {
+	case CATPT_NOTIFY_POSITION_CHANGED:
+		memcpy_fromio(&pos, catpt_inbox_addr(cdev), sizeof(pos));
+		trace_catpt_ipc_payload((u8 *)&pos, sizeof(pos));
+
+		catpt_stream_update_position(cdev, stream, &pos);
+		break;
+
+	case CATPT_NOTIFY_GLITCH_OCCURRED:
+		memcpy_fromio(&glitch, catpt_inbox_addr(cdev), sizeof(glitch));
+		trace_catpt_ipc_payload((u8 *)&glitch, sizeof(glitch));
+
+		dev_warn(cdev->dev, "glitch %d at pos: 0x%08llx, wp: 0x%08x\n",
+			 glitch.type, glitch.presentation_pos,
+			 glitch.write_pos);
+		break;
+
+	default:
+		dev_warn(cdev->dev, "unknown notification: %d received\n",
+			 msg.notify_reason);
+		break;
+	}
+}
+
+static void catpt_dsp_copy_rx(struct catpt_dev *cdev, u32 header)
+{
+	struct catpt_ipc *ipc = &cdev->ipc;
+
+	ipc->rx.header = header;
+	if (ipc->rx.rsp.status != CATPT_REPLY_SUCCESS)
+		return;
+
+	memcpy_fromio(ipc->rx.data, catpt_outbox_addr(cdev), ipc->rx.size);
+	trace_catpt_ipc_payload(ipc->rx.data, ipc->rx.size);
+}
+
+static void catpt_dsp_process_response(struct catpt_dev *cdev, u32 header)
+{
+	union catpt_notify_msg msg = CATPT_MSG(header);
+	struct catpt_ipc *ipc = &cdev->ipc;
+
+	if (msg.fw_ready) {
+		struct catpt_fw_ready config;
+		/* to fit 32b header original address is shifted right by 3 */
+		u32 off = msg.mailbox_address << 3;
+
+		memcpy_fromio(&config, cdev->lpe_ba + off, sizeof(config));
+		trace_catpt_ipc_payload((u8 *)&config, sizeof(config));
+
+		catpt_ipc_arm(ipc, &config);
+		complete(&cdev->fw_ready);
+		return;
+	}
+
+	switch (msg.global_msg_type) {
+	case CATPT_GLB_REQUEST_CORE_DUMP:
+		dev_err(cdev->dev, "ADSP device coredump received\n");
+		ipc->ready = false;
+		catpt_coredump(cdev);
+		/* TODO: attempt recovery */
+		break;
+
+	case CATPT_GLB_STREAM_MESSAGE:
+		switch (msg.stream_msg_type) {
+		case CATPT_STRM_NOTIFICATION:
+			catpt_dsp_notify_stream(cdev, msg);
+			break;
+		default:
+			catpt_dsp_copy_rx(cdev, header);
+			/* signal completion of delayed reply */
+			complete(&ipc->busy_completion);
+			break;
+		}
+		break;
+
+	default:
+		dev_warn(cdev->dev, "unknown response: %d received\n",
+			 msg.global_msg_type);
+		break;
+	}
+}
+
+irqreturn_t catpt_dsp_irq_thread(int irq, void *dev_id)
+{
+	struct catpt_dev *cdev = dev_id;
+	u32 ipcd;
+
+	ipcd = catpt_readl_shim(cdev, IPCD);
+	trace_catpt_ipc_notify(ipcd);
+
+	/* ensure there is delayed reply or notification to process */
+	if (!(ipcd & CATPT_IPCD_BUSY))
+		return IRQ_NONE;
+
+	catpt_dsp_process_response(cdev, ipcd);
+
+	/* tell DSP processing is completed */
+	catpt_updatel_shim(cdev, IPCD, CATPT_IPCD_BUSY | CATPT_IPCD_DONE,
+			   CATPT_IPCD_DONE);
+	/* unmask dsp BUSY interrupt */
+	catpt_updatel_shim(cdev, IMC, CATPT_IMC_IPCDB, 0);
+
+	return IRQ_HANDLED;
+}
+
+irqreturn_t catpt_dsp_irq_handler(int irq, void *dev_id)
+{
+	struct catpt_dev *cdev = dev_id;
+	irqreturn_t ret = IRQ_NONE;
+	u32 isc, ipcc;
+
+	isc = catpt_readl_shim(cdev, ISC);
+	trace_catpt_irq(isc);
+
+	/* immediate reply */
+	if (isc & CATPT_ISC_IPCCD) {
+		/* mask host DONE interrupt */
+		catpt_updatel_shim(cdev, IMC, CATPT_IMC_IPCCD, CATPT_IMC_IPCCD);
+
+		ipcc = catpt_readl_shim(cdev, IPCC);
+		trace_catpt_ipc_reply(ipcc);
+		catpt_dsp_copy_rx(cdev, ipcc);
+		complete(&cdev->ipc.done_completion);
+
+		/* tell DSP processing is completed */
+		catpt_updatel_shim(cdev, IPCC, CATPT_IPCC_DONE, 0);
+		/* unmask host DONE interrupt */
+		catpt_updatel_shim(cdev, IMC, CATPT_IMC_IPCCD, 0);
+		ret = IRQ_HANDLED;
+	}
+
+	/* delayed reply or notification */
+	if (isc & CATPT_ISC_IPCDB) {
+		/* mask dsp BUSY interrupt */
+		catpt_updatel_shim(cdev, IMC, CATPT_IMC_IPCDB, CATPT_IMC_IPCDB);
+		ret = IRQ_WAKE_THREAD;
+	}
+
+	return ret;
+}