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, 258 insertions, 0 deletions

diff --git a/drivers/gpu/drm/mediatek/mtk_cec.c b/drivers/gpu/drm/mediatek/mtk_cec.c
new file mode 100644
index 000000000..cdfa64891
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_cec.c
@@ -0,0 +1,258 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2014 MediaTek Inc.
+ * Author: Jie Qiu <jie.qiu@mediatek.com>
+ */
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
+
+#include "mtk_cec.h"
+
+#define TR_CONFIG		0x00
+#define CLEAR_CEC_IRQ			BIT(15)
+
+#define CEC_CKGEN		0x04
+#define CEC_32K_PDN			BIT(19)
+#define PDN				BIT(16)
+
+#define RX_EVENT		0x54
+#define HDMI_PORD			BIT(25)
+#define HDMI_HTPLG			BIT(24)
+#define HDMI_PORD_INT_EN		BIT(9)
+#define HDMI_HTPLG_INT_EN		BIT(8)
+
+#define RX_GEN_WD		0x58
+#define HDMI_PORD_INT_32K_STATUS	BIT(26)
+#define RX_RISC_INT_32K_STATUS		BIT(25)
+#define HDMI_HTPLG_INT_32K_STATUS	BIT(24)
+#define HDMI_PORD_INT_32K_CLR		BIT(18)
+#define RX_INT_32K_CLR			BIT(17)
+#define HDMI_HTPLG_INT_32K_CLR		BIT(16)
+#define HDMI_PORD_INT_32K_STA_MASK	BIT(10)
+#define RX_RISC_INT_32K_STA_MASK	BIT(9)
+#define HDMI_HTPLG_INT_32K_STA_MASK	BIT(8)
+#define HDMI_PORD_INT_32K_EN		BIT(2)
+#define RX_INT_32K_EN			BIT(1)
+#define HDMI_HTPLG_INT_32K_EN		BIT(0)
+
+#define NORMAL_INT_CTRL		0x5C
+#define HDMI_HTPLG_INT_STA		BIT(0)
+#define HDMI_PORD_INT_STA		BIT(1)
+#define HDMI_HTPLG_INT_CLR		BIT(16)
+#define HDMI_PORD_INT_CLR		BIT(17)
+#define HDMI_FULL_INT_CLR		BIT(20)
+
+struct mtk_cec {
+	void __iomem *regs;
+	struct clk *clk;
+	int irq;
+	bool hpd;
+	void (*hpd_event)(bool hpd, struct device *dev);
+	struct device *hdmi_dev;
+	spinlock_t lock;
+};
+
+static void mtk_cec_clear_bits(struct mtk_cec *cec, unsigned int offset,
+			       unsigned int bits)
+{
+	void __iomem *reg = cec->regs + offset;
+	u32 tmp;
+
+	tmp = readl(reg);
+	tmp &= ~bits;
+	writel(tmp, reg);
+}
+
+static void mtk_cec_set_bits(struct mtk_cec *cec, unsigned int offset,
+			     unsigned int bits)
+{
+	void __iomem *reg = cec->regs + offset;
+	u32 tmp;
+
+	tmp = readl(reg);
+	tmp |= bits;
+	writel(tmp, reg);
+}
+
+static void mtk_cec_mask(struct mtk_cec *cec, unsigned int offset,
+			 unsigned int val, unsigned int mask)
+{
+	u32 tmp = readl(cec->regs + offset) & ~mask;
+
+	tmp |= val & mask;
+	writel(tmp, cec->regs + offset);
+}
+
+void mtk_cec_set_hpd_event(struct device *dev,
+			   void (*hpd_event)(bool hpd, struct device *dev),
+			   struct device *hdmi_dev)
+{
+	struct mtk_cec *cec = dev_get_drvdata(dev);
+	unsigned long flags;
+
+	spin_lock_irqsave(&cec->lock, flags);
+	cec->hdmi_dev = hdmi_dev;
+	cec->hpd_event = hpd_event;
+	spin_unlock_irqrestore(&cec->lock, flags);
+}
+
+bool mtk_cec_hpd_high(struct device *dev)
+{
+	struct mtk_cec *cec = dev_get_drvdata(dev);
+	unsigned int status;
+
+	status = readl(cec->regs + RX_EVENT);
+
+	return (status & (HDMI_PORD | HDMI_HTPLG)) == (HDMI_PORD | HDMI_HTPLG);
+}
+
+static void mtk_cec_htplg_irq_init(struct mtk_cec *cec)
+{
+	mtk_cec_mask(cec, CEC_CKGEN, 0 | CEC_32K_PDN, PDN | CEC_32K_PDN);
+	mtk_cec_set_bits(cec, RX_GEN_WD, HDMI_PORD_INT_32K_CLR |
+			 RX_INT_32K_CLR | HDMI_HTPLG_INT_32K_CLR);
+	mtk_cec_mask(cec, RX_GEN_WD, 0, HDMI_PORD_INT_32K_CLR | RX_INT_32K_CLR |
+		     HDMI_HTPLG_INT_32K_CLR | HDMI_PORD_INT_32K_EN |
+		     RX_INT_32K_EN | HDMI_HTPLG_INT_32K_EN);
+}
+
+static void mtk_cec_htplg_irq_enable(struct mtk_cec *cec)
+{
+	mtk_cec_set_bits(cec, RX_EVENT, HDMI_PORD_INT_EN | HDMI_HTPLG_INT_EN);
+}
+
+static void mtk_cec_htplg_irq_disable(struct mtk_cec *cec)
+{
+	mtk_cec_clear_bits(cec, RX_EVENT, HDMI_PORD_INT_EN | HDMI_HTPLG_INT_EN);
+}
+
+static void mtk_cec_clear_htplg_irq(struct mtk_cec *cec)
+{
+	mtk_cec_set_bits(cec, TR_CONFIG, CLEAR_CEC_IRQ);
+	mtk_cec_set_bits(cec, NORMAL_INT_CTRL, HDMI_HTPLG_INT_CLR |
+			 HDMI_PORD_INT_CLR | HDMI_FULL_INT_CLR);
+	mtk_cec_set_bits(cec, RX_GEN_WD, HDMI_PORD_INT_32K_CLR |
+			 RX_INT_32K_CLR | HDMI_HTPLG_INT_32K_CLR);
+	usleep_range(5, 10);
+	mtk_cec_clear_bits(cec, NORMAL_INT_CTRL, HDMI_HTPLG_INT_CLR |
+			   HDMI_PORD_INT_CLR | HDMI_FULL_INT_CLR);
+	mtk_cec_clear_bits(cec, TR_CONFIG, CLEAR_CEC_IRQ);
+	mtk_cec_clear_bits(cec, RX_GEN_WD, HDMI_PORD_INT_32K_CLR |
+			   RX_INT_32K_CLR | HDMI_HTPLG_INT_32K_CLR);
+}
+
+static void mtk_cec_hpd_event(struct mtk_cec *cec, bool hpd)
+{
+	void (*hpd_event)(bool hpd, struct device *dev);
+	struct device *hdmi_dev;
+	unsigned long flags;
+
+	spin_lock_irqsave(&cec->lock, flags);
+	hpd_event = cec->hpd_event;
+	hdmi_dev = cec->hdmi_dev;
+	spin_unlock_irqrestore(&cec->lock, flags);
+
+	if (hpd_event)
+		hpd_event(hpd, hdmi_dev);
+}
+
+static irqreturn_t mtk_cec_htplg_isr_thread(int irq, void *arg)
+{
+	struct device *dev = arg;
+	struct mtk_cec *cec = dev_get_drvdata(dev);
+	bool hpd;
+
+	mtk_cec_clear_htplg_irq(cec);
+	hpd = mtk_cec_hpd_high(dev);
+
+	if (cec->hpd != hpd) {
+		dev_dbg(dev, "hotplug event! cur hpd = %d, hpd = %d\n",
+			cec->hpd, hpd);
+		cec->hpd = hpd;
+		mtk_cec_hpd_event(cec, hpd);
+	}
+	return IRQ_HANDLED;
+}
+
+static int mtk_cec_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct mtk_cec *cec;
+	struct resource *res;
+	int ret;
+
+	cec = devm_kzalloc(dev, sizeof(*cec), GFP_KERNEL);
+	if (!cec)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, cec);
+	spin_lock_init(&cec->lock);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	cec->regs = devm_ioremap_resource(dev, res);
+	if (IS_ERR(cec->regs)) {
+		ret = PTR_ERR(cec->regs);
+		dev_err(dev, "Failed to ioremap cec: %d\n", ret);
+		return ret;
+	}
+
+	cec->clk = devm_clk_get(dev, NULL);
+	if (IS_ERR(cec->clk)) {
+		ret = PTR_ERR(cec->clk);
+		dev_err(dev, "Failed to get cec clock: %d\n", ret);
+		return ret;
+	}
+
+	cec->irq = platform_get_irq(pdev, 0);
+	if (cec->irq < 0)
+		return cec->irq;
+
+	ret = devm_request_threaded_irq(dev, cec->irq, NULL,
+					mtk_cec_htplg_isr_thread,
+					IRQF_SHARED | IRQF_TRIGGER_LOW |
+					IRQF_ONESHOT, "hdmi hpd", dev);
+	if (ret) {
+		dev_err(dev, "Failed to register cec irq: %d\n", ret);
+		return ret;
+	}
+
+	ret = clk_prepare_enable(cec->clk);
+	if (ret) {
+		dev_err(dev, "Failed to enable cec clock: %d\n", ret);
+		return ret;
+	}
+
+	mtk_cec_htplg_irq_init(cec);
+	mtk_cec_htplg_irq_enable(cec);
+
+	return 0;
+}
+
+static int mtk_cec_remove(struct platform_device *pdev)
+{
+	struct mtk_cec *cec = platform_get_drvdata(pdev);
+
+	mtk_cec_htplg_irq_disable(cec);
+	clk_disable_unprepare(cec->clk);
+	return 0;
+}
+
+static const struct of_device_id mtk_cec_of_ids[] = {
+	{ .compatible = "mediatek,mt8173-cec", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, mtk_cec_of_ids);
+
+struct platform_driver mtk_cec_driver = {
+	.probe = mtk_cec_probe,
+	.remove = mtk_cec_remove,
+	.driver = {
+		.name = "mediatek-cec",
+		.of_match_table = mtk_cec_of_ids,
+	},
+};