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, 381 insertions, 0 deletions

diff --git a/drivers/irqchip/irq-sun6i-r.c b/drivers/irqchip/irq-sun6i-r.c
new file mode 100644
index 000000000..a01e44049
--- /dev/null
+++ b/drivers/irqchip/irq-sun6i-r.c
@@ -0,0 +1,381 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * The R_INTC in Allwinner A31 and newer SoCs manages several types of
+ * interrupts, as shown below:
+ *
+ *             NMI IRQ                DIRECT IRQs           MUXED IRQs
+ *              bit 0                  bits 1-15^           bits 19-31
+ *
+ *   +---------+                      +---------+    +---------+  +---------+
+ *   | NMI Pad |                      |  IRQ d  |    |  IRQ m  |  | IRQ m+7 |
+ *   +---------+                      +---------+    +---------+  +---------+
+ *        |                             |     |         |    |      |    |
+ *        |                             |     |         |    |......|    |
+ * +------V------+ +------------+       |     |         | +--V------V--+ |
+ * |   Invert/   | | Write 1 to |       |     |         | |  AND with  | |
+ * | Edge Detect | | PENDING[0] |       |     |         | |  MUX[m/8]  | |
+ * +-------------+ +------------+       |     |         | +------------+ |
+ *            |       |                 |     |         |       |        |
+ *         +--V-------V--+           +--V--+  |      +--V--+    |     +--V--+
+ *         | Set    Reset|           | GIC |  |      | GIC |    |     | GIC |
+ *         |    Latch    |           | SPI |  |      | SPI |... |  ...| SPI |
+ *         +-------------+           | N+d |  |      |  m  |    |     | m+7 |
+ *             |     |               +-----+  |      +-----+    |     +-----+
+ *             |     |                        |                 |
+ *     +-------V-+ +-V----------+   +---------V--+     +--------V--------+
+ *     | GIC SPI | |  AND with  |   |  AND with  |     |    AND with     |
+ *     | N (=32) | |  ENABLE[0] |   |  ENABLE[d] |     |  ENABLE[19+m/8] |
+ *     +---------+ +------------+   +------------+     +-----------------+
+ *                        |                |                    |
+ *                 +------V-----+   +------V-----+     +--------V--------+
+ *                 |    Read    |   |    Read    |     |     Read        |
+ *                 | PENDING[0] |   | PENDING[d] |     | PENDING[19+m/8] |
+ *                 +------------+   +------------+     +-----------------+
+ *
+ * ^ bits 16-18 are direct IRQs for peripherals with banked interrupts, such as
+ *   the MSGBOX. These IRQs do not map to any GIC SPI.
+ *
+ * The H6 variant adds two more (banked) direct IRQs and implements the full
+ * set of 128 mux bits. This requires a second set of top-level registers.
+ */
+
+#include <linux/bitmap.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/irqchip.h>
+#include <linux/irqdomain.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/syscore_ops.h>
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+#define SUN6I_NMI_CTRL			(0x0c)
+#define SUN6I_IRQ_PENDING(n)		(0x10 + 4 * (n))
+#define SUN6I_IRQ_ENABLE(n)		(0x40 + 4 * (n))
+#define SUN6I_MUX_ENABLE(n)		(0xc0 + 4 * (n))
+
+#define SUN6I_NMI_SRC_TYPE_LEVEL_LOW	0
+#define SUN6I_NMI_SRC_TYPE_EDGE_FALLING	1
+#define SUN6I_NMI_SRC_TYPE_LEVEL_HIGH	2
+#define SUN6I_NMI_SRC_TYPE_EDGE_RISING	3
+
+#define SUN6I_NMI_BIT			BIT(0)
+
+#define SUN6I_NMI_NEEDS_ACK		((void *)1)
+
+#define SUN6I_NR_TOP_LEVEL_IRQS		64
+#define SUN6I_NR_DIRECT_IRQS		16
+#define SUN6I_NR_MUX_BITS		128
+
+struct sun6i_r_intc_variant {
+	u32		first_mux_irq;
+	u32		nr_mux_irqs;
+	u32		mux_valid[BITS_TO_U32(SUN6I_NR_MUX_BITS)];
+};
+
+static void __iomem *base;
+static irq_hw_number_t nmi_hwirq;
+static DECLARE_BITMAP(wake_irq_enabled, SUN6I_NR_TOP_LEVEL_IRQS);
+static DECLARE_BITMAP(wake_mux_enabled, SUN6I_NR_MUX_BITS);
+static DECLARE_BITMAP(wake_mux_valid, SUN6I_NR_MUX_BITS);
+
+static void sun6i_r_intc_ack_nmi(void)
+{
+	writel_relaxed(SUN6I_NMI_BIT, base + SUN6I_IRQ_PENDING(0));
+}
+
+static void sun6i_r_intc_nmi_ack(struct irq_data *data)
+{
+	if (irqd_get_trigger_type(data) & IRQ_TYPE_EDGE_BOTH)
+		sun6i_r_intc_ack_nmi();
+	else
+		data->chip_data = SUN6I_NMI_NEEDS_ACK;
+}
+
+static void sun6i_r_intc_nmi_eoi(struct irq_data *data)
+{
+	/* For oneshot IRQs, delay the ack until the IRQ is unmasked. */
+	if (data->chip_data == SUN6I_NMI_NEEDS_ACK && !irqd_irq_masked(data)) {
+		data->chip_data = NULL;
+		sun6i_r_intc_ack_nmi();
+	}
+
+	irq_chip_eoi_parent(data);
+}
+
+static void sun6i_r_intc_nmi_unmask(struct irq_data *data)
+{
+	if (data->chip_data == SUN6I_NMI_NEEDS_ACK) {
+		data->chip_data = NULL;
+		sun6i_r_intc_ack_nmi();
+	}
+
+	irq_chip_unmask_parent(data);
+}
+
+static int sun6i_r_intc_nmi_set_type(struct irq_data *data, unsigned int type)
+{
+	u32 nmi_src_type;
+
+	switch (type) {
+	case IRQ_TYPE_EDGE_RISING:
+		nmi_src_type = SUN6I_NMI_SRC_TYPE_EDGE_RISING;
+		break;
+	case IRQ_TYPE_EDGE_FALLING:
+		nmi_src_type = SUN6I_NMI_SRC_TYPE_EDGE_FALLING;
+		break;
+	case IRQ_TYPE_LEVEL_HIGH:
+		nmi_src_type = SUN6I_NMI_SRC_TYPE_LEVEL_HIGH;
+		break;
+	case IRQ_TYPE_LEVEL_LOW:
+		nmi_src_type = SUN6I_NMI_SRC_TYPE_LEVEL_LOW;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	writel_relaxed(nmi_src_type, base + SUN6I_NMI_CTRL);
+
+	/*
+	 * The "External NMI" GIC input connects to a latch inside R_INTC, not
+	 * directly to the pin. So the GIC trigger type does not depend on the
+	 * NMI pin trigger type.
+	 */
+	return irq_chip_set_type_parent(data, IRQ_TYPE_LEVEL_HIGH);
+}
+
+static int sun6i_r_intc_nmi_set_irqchip_state(struct irq_data *data,
+					      enum irqchip_irq_state which,
+					      bool state)
+{
+	if (which == IRQCHIP_STATE_PENDING && !state)
+		sun6i_r_intc_ack_nmi();
+
+	return irq_chip_set_parent_state(data, which, state);
+}
+
+static int sun6i_r_intc_irq_set_wake(struct irq_data *data, unsigned int on)
+{
+	unsigned long offset_from_nmi = data->hwirq - nmi_hwirq;
+
+	if (offset_from_nmi < SUN6I_NR_DIRECT_IRQS)
+		assign_bit(offset_from_nmi, wake_irq_enabled, on);
+	else if (test_bit(data->hwirq, wake_mux_valid))
+		assign_bit(data->hwirq, wake_mux_enabled, on);
+	else
+		/* Not wakeup capable. */
+		return -EPERM;
+
+	return 0;
+}
+
+static struct irq_chip sun6i_r_intc_nmi_chip = {
+	.name			= "sun6i-r-intc",
+	.irq_ack		= sun6i_r_intc_nmi_ack,
+	.irq_mask		= irq_chip_mask_parent,
+	.irq_unmask		= sun6i_r_intc_nmi_unmask,
+	.irq_eoi		= sun6i_r_intc_nmi_eoi,
+	.irq_set_affinity	= irq_chip_set_affinity_parent,
+	.irq_set_type		= sun6i_r_intc_nmi_set_type,
+	.irq_set_irqchip_state	= sun6i_r_intc_nmi_set_irqchip_state,
+	.irq_set_wake		= sun6i_r_intc_irq_set_wake,
+	.flags			= IRQCHIP_SET_TYPE_MASKED,
+};
+
+static struct irq_chip sun6i_r_intc_wakeup_chip = {
+	.name			= "sun6i-r-intc",
+	.irq_mask		= irq_chip_mask_parent,
+	.irq_unmask		= irq_chip_unmask_parent,
+	.irq_eoi		= irq_chip_eoi_parent,
+	.irq_set_affinity	= irq_chip_set_affinity_parent,
+	.irq_set_type		= irq_chip_set_type_parent,
+	.irq_set_wake		= sun6i_r_intc_irq_set_wake,
+	.flags			= IRQCHIP_SET_TYPE_MASKED,
+};
+
+static int sun6i_r_intc_domain_translate(struct irq_domain *domain,
+					 struct irq_fwspec *fwspec,
+					 unsigned long *hwirq,
+					 unsigned int *type)
+{
+	/* Accept the old two-cell binding for the NMI only. */
+	if (fwspec->param_count == 2 && fwspec->param[0] == 0) {
+		*hwirq = nmi_hwirq;
+		*type  = fwspec->param[1] & IRQ_TYPE_SENSE_MASK;
+		return 0;
+	}
+
+	/* Otherwise this binding should match the GIC SPI binding. */
+	if (fwspec->param_count < 3)
+		return -EINVAL;
+	if (fwspec->param[0] != GIC_SPI)
+		return -EINVAL;
+
+	*hwirq = fwspec->param[1];
+	*type  = fwspec->param[2] & IRQ_TYPE_SENSE_MASK;
+
+	return 0;
+}
+
+static int sun6i_r_intc_domain_alloc(struct irq_domain *domain,
+				     unsigned int virq,
+				     unsigned int nr_irqs, void *arg)
+{
+	struct irq_fwspec *fwspec = arg;
+	struct irq_fwspec gic_fwspec;
+	unsigned long hwirq;
+	unsigned int type;
+	int i, ret;
+
+	ret = sun6i_r_intc_domain_translate(domain, fwspec, &hwirq, &type);
+	if (ret)
+		return ret;
+	if (hwirq + nr_irqs > SUN6I_NR_MUX_BITS)
+		return -EINVAL;
+
+	/* Construct a GIC-compatible fwspec from this fwspec. */
+	gic_fwspec = (struct irq_fwspec) {
+		.fwnode      = domain->parent->fwnode,
+		.param_count = 3,
+		.param       = { GIC_SPI, hwirq, type },
+	};
+
+	ret = irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, &gic_fwspec);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < nr_irqs; ++i, ++hwirq, ++virq) {
+		if (hwirq == nmi_hwirq) {
+			irq_domain_set_hwirq_and_chip(domain, virq, hwirq,
+						      &sun6i_r_intc_nmi_chip,
+						      NULL);
+			irq_set_handler(virq, handle_fasteoi_ack_irq);
+		} else {
+			irq_domain_set_hwirq_and_chip(domain, virq, hwirq,
+						      &sun6i_r_intc_wakeup_chip,
+						      NULL);
+		}
+	}
+
+	return 0;
+}
+
+static const struct irq_domain_ops sun6i_r_intc_domain_ops = {
+	.translate	= sun6i_r_intc_domain_translate,
+	.alloc		= sun6i_r_intc_domain_alloc,
+	.free		= irq_domain_free_irqs_common,
+};
+
+static int sun6i_r_intc_suspend(void)
+{
+	u32 buf[BITS_TO_U32(max(SUN6I_NR_TOP_LEVEL_IRQS, SUN6I_NR_MUX_BITS))];
+	int i;
+
+	/* Wake IRQs are enabled during system sleep and shutdown. */
+	bitmap_to_arr32(buf, wake_irq_enabled, SUN6I_NR_TOP_LEVEL_IRQS);
+	for (i = 0; i < BITS_TO_U32(SUN6I_NR_TOP_LEVEL_IRQS); ++i)
+		writel_relaxed(buf[i], base + SUN6I_IRQ_ENABLE(i));
+	bitmap_to_arr32(buf, wake_mux_enabled, SUN6I_NR_MUX_BITS);
+	for (i = 0; i < BITS_TO_U32(SUN6I_NR_MUX_BITS); ++i)
+		writel_relaxed(buf[i], base + SUN6I_MUX_ENABLE(i));
+
+	return 0;
+}
+
+static void sun6i_r_intc_resume(void)
+{
+	int i;
+
+	/* Only the NMI is relevant during normal operation. */
+	writel_relaxed(SUN6I_NMI_BIT, base + SUN6I_IRQ_ENABLE(0));
+	for (i = 1; i < BITS_TO_U32(SUN6I_NR_TOP_LEVEL_IRQS); ++i)
+		writel_relaxed(0, base + SUN6I_IRQ_ENABLE(i));
+}
+
+static void sun6i_r_intc_shutdown(void)
+{
+	sun6i_r_intc_suspend();
+}
+
+static struct syscore_ops sun6i_r_intc_syscore_ops = {
+	.suspend	= sun6i_r_intc_suspend,
+	.resume		= sun6i_r_intc_resume,
+	.shutdown	= sun6i_r_intc_shutdown,
+};
+
+static int __init sun6i_r_intc_init(struct device_node *node,
+				    struct device_node *parent,
+				    const struct sun6i_r_intc_variant *v)
+{
+	struct irq_domain *domain, *parent_domain;
+	struct of_phandle_args nmi_parent;
+	int ret;
+
+	/* Extract the NMI hwirq number from the OF node. */
+	ret = of_irq_parse_one(node, 0, &nmi_parent);
+	if (ret)
+		return ret;
+	if (nmi_parent.args_count < 3 ||
+	    nmi_parent.args[0] != GIC_SPI ||
+	    nmi_parent.args[2] != IRQ_TYPE_LEVEL_HIGH)
+		return -EINVAL;
+	nmi_hwirq = nmi_parent.args[1];
+
+	bitmap_set(wake_irq_enabled, v->first_mux_irq, v->nr_mux_irqs);
+	bitmap_from_arr32(wake_mux_valid, v->mux_valid, SUN6I_NR_MUX_BITS);
+
+	parent_domain = irq_find_host(parent);
+	if (!parent_domain) {
+		pr_err("%pOF: Failed to obtain parent domain\n", node);
+		return -ENXIO;
+	}
+
+	base = of_io_request_and_map(node, 0, NULL);
+	if (IS_ERR(base)) {
+		pr_err("%pOF: Failed to map MMIO region\n", node);
+		return PTR_ERR(base);
+	}
+
+	domain = irq_domain_add_hierarchy(parent_domain, 0, 0, node,
+					  &sun6i_r_intc_domain_ops, NULL);
+	if (!domain) {
+		pr_err("%pOF: Failed to allocate domain\n", node);
+		iounmap(base);
+		return -ENOMEM;
+	}
+
+	register_syscore_ops(&sun6i_r_intc_syscore_ops);
+
+	sun6i_r_intc_ack_nmi();
+	sun6i_r_intc_resume();
+
+	return 0;
+}
+
+static const struct sun6i_r_intc_variant sun6i_a31_r_intc_variant __initconst = {
+	.first_mux_irq	= 19,
+	.nr_mux_irqs	= 13,
+	.mux_valid	= { 0xffffffff, 0xfff80000, 0xffffffff, 0x0000000f },
+};
+
+static int __init sun6i_a31_r_intc_init(struct device_node *node,
+					struct device_node *parent)
+{
+	return sun6i_r_intc_init(node, parent, &sun6i_a31_r_intc_variant);
+}
+IRQCHIP_DECLARE(sun6i_a31_r_intc, "allwinner,sun6i-a31-r-intc", sun6i_a31_r_intc_init);
+
+static const struct sun6i_r_intc_variant sun50i_h6_r_intc_variant __initconst = {
+	.first_mux_irq	= 21,
+	.nr_mux_irqs	= 16,
+	.mux_valid	= { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff },
+};
+
+static int __init sun50i_h6_r_intc_init(struct device_node *node,
+					struct device_node *parent)
+{
+	return sun6i_r_intc_init(node, parent, &sun50i_h6_r_intc_variant);
+}
+IRQCHIP_DECLARE(sun50i_h6_r_intc, "allwinner,sun50i-h6-r-intc", sun50i_h6_r_intc_init);