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, 230 insertions, 0 deletions

diff --git a/drivers/media/pci/pt3/pt3_i2c.c b/drivers/media/pci/pt3/pt3_i2c.c
new file mode 100644
index 000000000..b02be789a
--- /dev/null
+++ b/drivers/media/pci/pt3/pt3_i2c.c
@@ -0,0 +1,230 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Earthsoft PT3 driver
+ *
+ * Copyright (C) 2014 Akihiro Tsukada <tskd08@gmail.com>
+ */
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/io.h>
+#include <linux/pci.h>
+
+#include "pt3.h"
+
+#define PT3_I2C_BASE  2048
+#define PT3_CMD_ADDR_NORMAL 0
+#define PT3_CMD_ADDR_INIT_DEMOD  4096
+#define PT3_CMD_ADDR_INIT_TUNER  (4096 + 2042)
+
+/* masks for I2C status register */
+#define STAT_SEQ_RUNNING 0x1
+#define STAT_SEQ_ERROR   0x6
+#define STAT_NO_SEQ      0x8
+
+#define PT3_I2C_RUN   (1 << 16)
+#define PT3_I2C_RESET (1 << 17)
+
+enum ctl_cmd {
+	I_END,
+	I_ADDRESS,
+	I_CLOCK_L,
+	I_CLOCK_H,
+	I_DATA_L,
+	I_DATA_H,
+	I_RESET,
+	I_SLEEP,
+	I_DATA_L_NOP  = 0x08,
+	I_DATA_H_NOP  = 0x0c,
+	I_DATA_H_READ = 0x0d,
+	I_DATA_H_ACK0 = 0x0e,
+	I_DATA_H_ACK1 = 0x0f,
+};
+
+
+static void cmdbuf_add(struct pt3_i2cbuf *cbuf, enum ctl_cmd cmd)
+{
+	int buf_idx;
+
+	if ((cbuf->num_cmds % 2) == 0)
+		cbuf->tmp = cmd;
+	else {
+		cbuf->tmp |= cmd << 4;
+		buf_idx = cbuf->num_cmds / 2;
+		if (buf_idx < ARRAY_SIZE(cbuf->data))
+			cbuf->data[buf_idx] = cbuf->tmp;
+	}
+	cbuf->num_cmds++;
+}
+
+static void put_end(struct pt3_i2cbuf *cbuf)
+{
+	cmdbuf_add(cbuf, I_END);
+	if (cbuf->num_cmds % 2)
+		cmdbuf_add(cbuf, I_END);
+}
+
+static void put_start(struct pt3_i2cbuf *cbuf)
+{
+	cmdbuf_add(cbuf, I_DATA_H);
+	cmdbuf_add(cbuf, I_CLOCK_H);
+	cmdbuf_add(cbuf, I_DATA_L);
+	cmdbuf_add(cbuf, I_CLOCK_L);
+}
+
+static void put_byte_write(struct pt3_i2cbuf *cbuf, u8 val)
+{
+	u8 mask;
+
+	for (mask = 0x80; mask > 0; mask >>= 1)
+		cmdbuf_add(cbuf, (val & mask) ? I_DATA_H_NOP : I_DATA_L_NOP);
+	cmdbuf_add(cbuf, I_DATA_H_ACK0);
+}
+
+static void put_byte_read(struct pt3_i2cbuf *cbuf, u32 size)
+{
+	int i, j;
+
+	for (i = 0; i < size; i++) {
+		for (j = 0; j < 8; j++)
+			cmdbuf_add(cbuf, I_DATA_H_READ);
+		cmdbuf_add(cbuf, (i == size - 1) ? I_DATA_H_NOP : I_DATA_L_NOP);
+	}
+}
+
+static void put_stop(struct pt3_i2cbuf *cbuf)
+{
+	cmdbuf_add(cbuf, I_DATA_L);
+	cmdbuf_add(cbuf, I_CLOCK_H);
+	cmdbuf_add(cbuf, I_DATA_H);
+}
+
+
+/* translates msgs to internal commands for bit-banging */
+static void translate(struct pt3_i2cbuf *cbuf, struct i2c_msg *msgs, int num)
+{
+	int i, j;
+	bool rd;
+
+	cbuf->num_cmds = 0;
+	for (i = 0; i < num; i++) {
+		rd = !!(msgs[i].flags & I2C_M_RD);
+		put_start(cbuf);
+		put_byte_write(cbuf, msgs[i].addr << 1 | rd);
+		if (rd)
+			put_byte_read(cbuf, msgs[i].len);
+		else
+			for (j = 0; j < msgs[i].len; j++)
+				put_byte_write(cbuf, msgs[i].buf[j]);
+	}
+	if (num > 0) {
+		put_stop(cbuf);
+		put_end(cbuf);
+	}
+}
+
+static int wait_i2c_result(struct pt3_board *pt3, u32 *result, int max_wait)
+{
+	int i;
+	u32 v;
+
+	for (i = 0; i < max_wait; i++) {
+		v = ioread32(pt3->regs[0] + REG_I2C_R);
+		if (!(v & STAT_SEQ_RUNNING))
+			break;
+		usleep_range(500, 750);
+	}
+	if (i >= max_wait)
+		return -EIO;
+	if (result)
+		*result = v;
+	return 0;
+}
+
+/* send [pre-]translated i2c msgs stored at addr */
+static int send_i2c_cmd(struct pt3_board *pt3, u32 addr)
+{
+	u32 ret;
+
+	/* make sure that previous transactions had finished */
+	if (wait_i2c_result(pt3, NULL, 50)) {
+		dev_warn(&pt3->pdev->dev, "(%s) prev. transaction stalled\n",
+				__func__);
+		return -EIO;
+	}
+
+	iowrite32(PT3_I2C_RUN | addr, pt3->regs[0] + REG_I2C_W);
+	usleep_range(200, 300);
+	/* wait for the current transaction to finish */
+	if (wait_i2c_result(pt3, &ret, 500) || (ret & STAT_SEQ_ERROR)) {
+		dev_warn(&pt3->pdev->dev, "(%s) failed.\n", __func__);
+		return -EIO;
+	}
+	return 0;
+}
+
+
+/* init commands for each demod are combined into one transaction
+ *  and hidden in ROM with the address PT3_CMD_ADDR_INIT_DEMOD.
+ */
+int  pt3_init_all_demods(struct pt3_board *pt3)
+{
+	ioread32(pt3->regs[0] + REG_I2C_R);
+	return send_i2c_cmd(pt3, PT3_CMD_ADDR_INIT_DEMOD);
+}
+
+/* init commands for two ISDB-T tuners are hidden in ROM. */
+int  pt3_init_all_mxl301rf(struct pt3_board *pt3)
+{
+	usleep_range(1000, 2000);
+	return send_i2c_cmd(pt3, PT3_CMD_ADDR_INIT_TUNER);
+}
+
+void pt3_i2c_reset(struct pt3_board *pt3)
+{
+	iowrite32(PT3_I2C_RESET, pt3->regs[0] + REG_I2C_W);
+}
+
+/*
+ * I2C algorithm
+ */
+int
+pt3_i2c_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
+{
+	struct pt3_board *pt3;
+	struct pt3_i2cbuf *cbuf;
+	int i;
+	void __iomem *p;
+
+	pt3 = i2c_get_adapdata(adap);
+	cbuf = pt3->i2c_buf;
+
+	for (i = 0; i < num; i++)
+		if (msgs[i].flags & I2C_M_RECV_LEN) {
+			dev_warn(&pt3->pdev->dev,
+				"(%s) I2C_M_RECV_LEN not supported.\n",
+				__func__);
+			return -EINVAL;
+		}
+
+	translate(cbuf, msgs, num);
+	memcpy_toio(pt3->regs[1] + PT3_I2C_BASE + PT3_CMD_ADDR_NORMAL / 2,
+			cbuf->data, cbuf->num_cmds);
+
+	if (send_i2c_cmd(pt3, PT3_CMD_ADDR_NORMAL) < 0)
+		return -EIO;
+
+	p = pt3->regs[1] + PT3_I2C_BASE;
+	for (i = 0; i < num; i++)
+		if ((msgs[i].flags & I2C_M_RD) && msgs[i].len > 0) {
+			memcpy_fromio(msgs[i].buf, p, msgs[i].len);
+			p += msgs[i].len;
+		}
+
+	return num;
+}
+
+u32 pt3_i2c_functionality(struct i2c_adapter *adap)
+{
+	return I2C_FUNC_I2C;
+}