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, 300 insertions, 0 deletions

diff --git a/drivers/regulator/mt6315-regulator.c b/drivers/regulator/mt6315-regulator.c
new file mode 100644
index 000000000..284c229e1
--- /dev/null
+++ b/drivers/regulator/mt6315-regulator.c
@@ -0,0 +1,300 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (c) 2021 MediaTek Inc.
+
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/mt6315-regulator.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/spmi.h>
+
+#define MT6315_BUCK_MODE_AUTO		0
+#define MT6315_BUCK_MODE_FORCE_PWM	1
+#define MT6315_BUCK_MODE_LP		2
+
+struct mt6315_regulator_info {
+	struct regulator_desc desc;
+	u32 status_reg;
+	u32 lp_mode_mask;
+	u32 lp_mode_shift;
+};
+
+struct mt_regulator_init_data {
+	u32 modeset_mask[MT6315_VBUCK_MAX];
+};
+
+struct mt6315_chip {
+	struct device *dev;
+	struct regmap *regmap;
+};
+
+#define MT_BUCK(_name, _bid, _vsel)				\
+[_bid] = {							\
+	.desc = {						\
+		.name = _name,					\
+		.of_match = of_match_ptr(_name),		\
+		.regulators_node = "regulators",		\
+		.ops = &mt6315_volt_range_ops,			\
+		.type = REGULATOR_VOLTAGE,			\
+		.id = _bid,					\
+		.owner = THIS_MODULE,				\
+		.n_voltages = 0xc0,				\
+		.linear_ranges = mt_volt_range1,		\
+		.n_linear_ranges = ARRAY_SIZE(mt_volt_range1),	\
+		.vsel_reg = _vsel,				\
+		.vsel_mask = 0xff,				\
+		.enable_reg = MT6315_BUCK_TOP_CON0,		\
+		.enable_mask = BIT(_bid),			\
+		.of_map_mode = mt6315_map_mode,			\
+	},							\
+	.status_reg = _bid##_DBG4,				\
+	.lp_mode_mask = BIT(_bid),				\
+	.lp_mode_shift = _bid,					\
+}
+
+static const struct linear_range mt_volt_range1[] = {
+	REGULATOR_LINEAR_RANGE(0, 0, 0xbf, 6250),
+};
+
+static unsigned int mt6315_map_mode(unsigned int mode)
+{
+	switch (mode) {
+	case MT6315_BUCK_MODE_AUTO:
+		return REGULATOR_MODE_NORMAL;
+	case MT6315_BUCK_MODE_FORCE_PWM:
+		return REGULATOR_MODE_FAST;
+	case MT6315_BUCK_MODE_LP:
+		return REGULATOR_MODE_IDLE;
+	default:
+		return REGULATOR_MODE_INVALID;
+	}
+}
+
+static unsigned int mt6315_regulator_get_mode(struct regulator_dev *rdev)
+{
+	struct mt_regulator_init_data *init = rdev_get_drvdata(rdev);
+	const struct mt6315_regulator_info *info;
+	int ret, regval;
+	u32 modeset_mask;
+
+	info = container_of(rdev->desc, struct mt6315_regulator_info, desc);
+	modeset_mask = init->modeset_mask[rdev_get_id(rdev)];
+	ret = regmap_read(rdev->regmap, MT6315_BUCK_TOP_4PHASE_ANA_CON42, &regval);
+	if (ret != 0) {
+		dev_err(&rdev->dev, "Failed to get mode: %d\n", ret);
+		return ret;
+	}
+
+	if ((regval & modeset_mask) == modeset_mask)
+		return REGULATOR_MODE_FAST;
+
+	ret = regmap_read(rdev->regmap, MT6315_BUCK_TOP_CON1, &regval);
+	if (ret != 0) {
+		dev_err(&rdev->dev, "Failed to get lp mode: %d\n", ret);
+		return ret;
+	}
+
+	if (regval & info->lp_mode_mask)
+		return REGULATOR_MODE_IDLE;
+	else
+		return REGULATOR_MODE_NORMAL;
+}
+
+static int mt6315_regulator_set_mode(struct regulator_dev *rdev,
+				     u32 mode)
+{
+	struct mt_regulator_init_data *init = rdev_get_drvdata(rdev);
+	const struct mt6315_regulator_info *info;
+	int ret, val, curr_mode;
+	u32 modeset_mask;
+
+	info = container_of(rdev->desc, struct mt6315_regulator_info, desc);
+	modeset_mask = init->modeset_mask[rdev_get_id(rdev)];
+	curr_mode = mt6315_regulator_get_mode(rdev);
+	switch (mode) {
+	case REGULATOR_MODE_FAST:
+		ret = regmap_update_bits(rdev->regmap,
+					 MT6315_BUCK_TOP_4PHASE_ANA_CON42,
+					 modeset_mask,
+					 modeset_mask);
+		break;
+	case REGULATOR_MODE_NORMAL:
+		if (curr_mode == REGULATOR_MODE_FAST) {
+			ret = regmap_update_bits(rdev->regmap,
+						 MT6315_BUCK_TOP_4PHASE_ANA_CON42,
+						 modeset_mask,
+						 0);
+		} else if (curr_mode == REGULATOR_MODE_IDLE) {
+			ret = regmap_update_bits(rdev->regmap,
+						 MT6315_BUCK_TOP_CON1,
+						 info->lp_mode_mask,
+						 0);
+			usleep_range(100, 110);
+		} else {
+			ret = -EINVAL;
+		}
+		break;
+	case REGULATOR_MODE_IDLE:
+		val = MT6315_BUCK_MODE_LP >> 1;
+		val <<= info->lp_mode_shift;
+		ret = regmap_update_bits(rdev->regmap,
+					 MT6315_BUCK_TOP_CON1,
+					 info->lp_mode_mask,
+					 val);
+		break;
+	default:
+		ret = -EINVAL;
+		dev_err(&rdev->dev, "Unsupported mode: %d\n", mode);
+		break;
+	}
+
+	if (ret != 0) {
+		dev_err(&rdev->dev, "Failed to set mode: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int mt6315_get_status(struct regulator_dev *rdev)
+{
+	const struct mt6315_regulator_info *info;
+	int ret;
+	u32 regval;
+
+	info = container_of(rdev->desc, struct mt6315_regulator_info, desc);
+	ret = regmap_read(rdev->regmap, info->status_reg, &regval);
+	if (ret < 0) {
+		dev_err(&rdev->dev, "Failed to get enable reg: %d\n", ret);
+		return ret;
+	}
+
+	return (regval & BIT(0)) ? REGULATOR_STATUS_ON : REGULATOR_STATUS_OFF;
+}
+
+static const struct regulator_ops mt6315_volt_range_ops = {
+	.list_voltage = regulator_list_voltage_linear_range,
+	.map_voltage = regulator_map_voltage_linear_range,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.set_voltage_time_sel = regulator_set_voltage_time_sel,
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.is_enabled = regulator_is_enabled_regmap,
+	.get_status = mt6315_get_status,
+	.set_mode = mt6315_regulator_set_mode,
+	.get_mode = mt6315_regulator_get_mode,
+};
+
+static const struct mt6315_regulator_info mt6315_regulators[MT6315_VBUCK_MAX] = {
+	MT_BUCK("vbuck1", MT6315_VBUCK1, MT6315_BUCK_TOP_ELR0),
+	MT_BUCK("vbuck2", MT6315_VBUCK2, MT6315_BUCK_TOP_ELR2),
+	MT_BUCK("vbuck3", MT6315_VBUCK3, MT6315_BUCK_TOP_ELR4),
+	MT_BUCK("vbuck4", MT6315_VBUCK4, MT6315_BUCK_TOP_ELR6),
+};
+
+static const struct regmap_config mt6315_regmap_config = {
+	.reg_bits	= 16,
+	.val_bits	= 8,
+	.max_register	= 0x16d0,
+	.fast_io	= true,
+};
+
+static const struct of_device_id mt6315_of_match[] = {
+	{
+		.compatible = "mediatek,mt6315-regulator",
+	}, {
+		/* sentinel */
+	},
+};
+MODULE_DEVICE_TABLE(of, mt6315_of_match);
+
+static int mt6315_regulator_probe(struct spmi_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct regmap *regmap;
+	struct mt6315_chip *chip;
+	struct mt_regulator_init_data *init_data;
+	struct regulator_config config = {};
+	struct regulator_dev *rdev;
+	int i;
+
+	regmap = devm_regmap_init_spmi_ext(pdev, &mt6315_regmap_config);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	chip = devm_kzalloc(dev, sizeof(struct mt6315_chip), GFP_KERNEL);
+	if (!chip)
+		return -ENOMEM;
+
+	init_data = devm_kzalloc(dev, sizeof(struct mt_regulator_init_data), GFP_KERNEL);
+	if (!init_data)
+		return -ENOMEM;
+
+	switch (pdev->usid) {
+	case MT6315_PP:
+		init_data->modeset_mask[MT6315_VBUCK1] = BIT(MT6315_VBUCK1) | BIT(MT6315_VBUCK2) |
+							 BIT(MT6315_VBUCK4);
+		break;
+	case MT6315_SP:
+	case MT6315_RP:
+		init_data->modeset_mask[MT6315_VBUCK1] = BIT(MT6315_VBUCK1) | BIT(MT6315_VBUCK2);
+		break;
+	default:
+		init_data->modeset_mask[MT6315_VBUCK1] = BIT(MT6315_VBUCK1);
+		break;
+	}
+	for (i = MT6315_VBUCK2; i < MT6315_VBUCK_MAX; i++)
+		init_data->modeset_mask[i] = BIT(i);
+
+	chip->dev = dev;
+	chip->regmap = regmap;
+	dev_set_drvdata(dev, chip);
+
+	config.dev = dev;
+	config.regmap = regmap;
+	for (i = MT6315_VBUCK1; i < MT6315_VBUCK_MAX; i++) {
+		config.driver_data = init_data;
+		rdev = devm_regulator_register(dev, &mt6315_regulators[i].desc, &config);
+		if (IS_ERR(rdev)) {
+			dev_err(dev, "Failed to register %s\n",
+				mt6315_regulators[i].desc.name);
+			return PTR_ERR(rdev);
+		}
+	}
+
+	return 0;
+}
+
+static void mt6315_regulator_shutdown(struct spmi_device *pdev)
+{
+	struct mt6315_chip *chip = dev_get_drvdata(&pdev->dev);
+	int ret = 0;
+
+	ret |= regmap_write(chip->regmap, MT6315_TOP_TMA_KEY_H, PROTECTION_KEY_H);
+	ret |= regmap_write(chip->regmap, MT6315_TOP_TMA_KEY, PROTECTION_KEY);
+	ret |= regmap_update_bits(chip->regmap, MT6315_TOP2_ELR7, 1, 1);
+	ret |= regmap_write(chip->regmap, MT6315_TOP_TMA_KEY, 0);
+	ret |= regmap_write(chip->regmap, MT6315_TOP_TMA_KEY_H, 0);
+	if (ret < 0)
+		dev_err(&pdev->dev, "[%#x] Failed to enable power off sequence. %d\n",
+			   pdev->usid, ret);
+}
+
+static struct spmi_driver mt6315_regulator_driver = {
+	.driver		= {
+		.name	= "mt6315-regulator",
+		.of_match_table = mt6315_of_match,
+	},
+	.probe = mt6315_regulator_probe,
+	.shutdown = mt6315_regulator_shutdown,
+};
+
+module_spmi_driver(mt6315_regulator_driver);
+
+MODULE_AUTHOR("Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>");
+MODULE_DESCRIPTION("Regulator Driver for MediaTek MT6315 PMIC");
+MODULE_LICENSE("GPL");