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, 553 insertions, 0 deletions

diff --git a/arch/mips/bcm63xx/irq.c b/arch/mips/bcm63xx/irq.c
new file mode 100644
index 000000000..254801344
--- /dev/null
+++ b/arch/mips/bcm63xx/irq.c
@@ -0,0 +1,553 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
+ * Copyright (C) 2008 Nicolas Schichan <nschichan@freebox.fr>
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/spinlock.h>
+#include <asm/irq_cpu.h>
+#include <asm/mipsregs.h>
+#include <bcm63xx_cpu.h>
+#include <bcm63xx_regs.h>
+#include <bcm63xx_io.h>
+#include <bcm63xx_irq.h>
+
+
+static DEFINE_SPINLOCK(ipic_lock);
+static DEFINE_SPINLOCK(epic_lock);
+
+static u32 irq_stat_addr[2];
+static u32 irq_mask_addr[2];
+static void (*dispatch_internal)(int cpu);
+static int is_ext_irq_cascaded;
+static unsigned int ext_irq_count;
+static unsigned int ext_irq_start, ext_irq_end;
+static unsigned int ext_irq_cfg_reg1, ext_irq_cfg_reg2;
+static void (*internal_irq_mask)(struct irq_data *d);
+static void (*internal_irq_unmask)(struct irq_data *d, const struct cpumask *m);
+
+
+static inline u32 get_ext_irq_perf_reg(int irq)
+{
+	if (irq < 4)
+		return ext_irq_cfg_reg1;
+	return ext_irq_cfg_reg2;
+}
+
+static inline void handle_internal(int intbit)
+{
+	if (is_ext_irq_cascaded &&
+	    intbit >= ext_irq_start && intbit <= ext_irq_end)
+		do_IRQ(intbit - ext_irq_start + IRQ_EXTERNAL_BASE);
+	else
+		do_IRQ(intbit + IRQ_INTERNAL_BASE);
+}
+
+static inline int enable_irq_for_cpu(int cpu, struct irq_data *d,
+				     const struct cpumask *m)
+{
+	bool enable = cpu_online(cpu);
+
+#ifdef CONFIG_SMP
+	if (m)
+		enable &= cpumask_test_cpu(cpu, m);
+	else if (irqd_affinity_was_set(d))
+		enable &= cpumask_test_cpu(cpu, irq_data_get_affinity_mask(d));
+#endif
+	return enable;
+}
+
+/*
+ * dispatch internal devices IRQ (uart, enet, watchdog, ...). do not
+ * prioritize any interrupt relatively to another. the static counter
+ * will resume the loop where it ended the last time we left this
+ * function.
+ */
+
+#define BUILD_IPIC_INTERNAL(width)					\
+void __dispatch_internal_##width(int cpu)				\
+{									\
+	u32 pending[width / 32];					\
+	unsigned int src, tgt;						\
+	bool irqs_pending = false;					\
+	static unsigned int i[2];					\
+	unsigned int *next = &i[cpu];					\
+	unsigned long flags;						\
+									\
+	/* read registers in reverse order */				\
+	spin_lock_irqsave(&ipic_lock, flags);				\
+	for (src = 0, tgt = (width / 32); src < (width / 32); src++) {	\
+		u32 val;						\
+									\
+		val = bcm_readl(irq_stat_addr[cpu] + src * sizeof(u32)); \
+		val &= bcm_readl(irq_mask_addr[cpu] + src * sizeof(u32)); \
+		pending[--tgt] = val;					\
+									\
+		if (val)						\
+			irqs_pending = true;				\
+	}								\
+	spin_unlock_irqrestore(&ipic_lock, flags);			\
+									\
+	if (!irqs_pending)						\
+		return;							\
+									\
+	while (1) {							\
+		unsigned int to_call = *next;				\
+									\
+		*next = (*next + 1) & (width - 1);			\
+		if (pending[to_call / 32] & (1 << (to_call & 0x1f))) {	\
+			handle_internal(to_call);			\
+			break;						\
+		}							\
+	}								\
+}									\
+									\
+static void __internal_irq_mask_##width(struct irq_data *d)		\
+{									\
+	u32 val;							\
+	unsigned irq = d->irq - IRQ_INTERNAL_BASE;			\
+	unsigned reg = (irq / 32) ^ (width/32 - 1);			\
+	unsigned bit = irq & 0x1f;					\
+	unsigned long flags;						\
+	int cpu;							\
+									\
+	spin_lock_irqsave(&ipic_lock, flags);				\
+	for_each_present_cpu(cpu) {					\
+		if (!irq_mask_addr[cpu])				\
+			break;						\
+									\
+		val = bcm_readl(irq_mask_addr[cpu] + reg * sizeof(u32));\
+		val &= ~(1 << bit);					\
+		bcm_writel(val, irq_mask_addr[cpu] + reg * sizeof(u32));\
+	}								\
+	spin_unlock_irqrestore(&ipic_lock, flags);			\
+}									\
+									\
+static void __internal_irq_unmask_##width(struct irq_data *d,		\
+					  const struct cpumask *m)	\
+{									\
+	u32 val;							\
+	unsigned irq = d->irq - IRQ_INTERNAL_BASE;			\
+	unsigned reg = (irq / 32) ^ (width/32 - 1);			\
+	unsigned bit = irq & 0x1f;					\
+	unsigned long flags;						\
+	int cpu;							\
+									\
+	spin_lock_irqsave(&ipic_lock, flags);				\
+	for_each_present_cpu(cpu) {					\
+		if (!irq_mask_addr[cpu])				\
+			break;						\
+									\
+		val = bcm_readl(irq_mask_addr[cpu] + reg * sizeof(u32));\
+		if (enable_irq_for_cpu(cpu, d, m))			\
+			val |= (1 << bit);				\
+		else							\
+			val &= ~(1 << bit);				\
+		bcm_writel(val, irq_mask_addr[cpu] + reg * sizeof(u32));\
+	}								\
+	spin_unlock_irqrestore(&ipic_lock, flags);			\
+}
+
+BUILD_IPIC_INTERNAL(32);
+BUILD_IPIC_INTERNAL(64);
+
+asmlinkage void plat_irq_dispatch(void)
+{
+	u32 cause;
+
+	do {
+		cause = read_c0_cause() & read_c0_status() & ST0_IM;
+
+		if (!cause)
+			break;
+
+		if (cause & CAUSEF_IP7)
+			do_IRQ(7);
+		if (cause & CAUSEF_IP0)
+			do_IRQ(0);
+		if (cause & CAUSEF_IP1)
+			do_IRQ(1);
+		if (cause & CAUSEF_IP2)
+			dispatch_internal(0);
+		if (is_ext_irq_cascaded) {
+			if (cause & CAUSEF_IP3)
+				dispatch_internal(1);
+		} else {
+			if (cause & CAUSEF_IP3)
+				do_IRQ(IRQ_EXT_0);
+			if (cause & CAUSEF_IP4)
+				do_IRQ(IRQ_EXT_1);
+			if (cause & CAUSEF_IP5)
+				do_IRQ(IRQ_EXT_2);
+			if (cause & CAUSEF_IP6)
+				do_IRQ(IRQ_EXT_3);
+		}
+	} while (1);
+}
+
+/*
+ * internal IRQs operations: only mask/unmask on PERF irq mask
+ * register.
+ */
+static void bcm63xx_internal_irq_mask(struct irq_data *d)
+{
+	internal_irq_mask(d);
+}
+
+static void bcm63xx_internal_irq_unmask(struct irq_data *d)
+{
+	internal_irq_unmask(d, NULL);
+}
+
+/*
+ * external IRQs operations: mask/unmask and clear on PERF external
+ * irq control register.
+ */
+static void bcm63xx_external_irq_mask(struct irq_data *d)
+{
+	unsigned int irq = d->irq - IRQ_EXTERNAL_BASE;
+	u32 reg, regaddr;
+	unsigned long flags;
+
+	regaddr = get_ext_irq_perf_reg(irq);
+	spin_lock_irqsave(&epic_lock, flags);
+	reg = bcm_perf_readl(regaddr);
+
+	if (BCMCPU_IS_6348())
+		reg &= ~EXTIRQ_CFG_MASK_6348(irq % 4);
+	else
+		reg &= ~EXTIRQ_CFG_MASK(irq % 4);
+
+	bcm_perf_writel(reg, regaddr);
+	spin_unlock_irqrestore(&epic_lock, flags);
+
+	if (is_ext_irq_cascaded)
+		internal_irq_mask(irq_get_irq_data(irq + ext_irq_start));
+}
+
+static void bcm63xx_external_irq_unmask(struct irq_data *d)
+{
+	unsigned int irq = d->irq - IRQ_EXTERNAL_BASE;
+	u32 reg, regaddr;
+	unsigned long flags;
+
+	regaddr = get_ext_irq_perf_reg(irq);
+	spin_lock_irqsave(&epic_lock, flags);
+	reg = bcm_perf_readl(regaddr);
+
+	if (BCMCPU_IS_6348())
+		reg |= EXTIRQ_CFG_MASK_6348(irq % 4);
+	else
+		reg |= EXTIRQ_CFG_MASK(irq % 4);
+
+	bcm_perf_writel(reg, regaddr);
+	spin_unlock_irqrestore(&epic_lock, flags);
+
+	if (is_ext_irq_cascaded)
+		internal_irq_unmask(irq_get_irq_data(irq + ext_irq_start),
+				    NULL);
+}
+
+static void bcm63xx_external_irq_clear(struct irq_data *d)
+{
+	unsigned int irq = d->irq - IRQ_EXTERNAL_BASE;
+	u32 reg, regaddr;
+	unsigned long flags;
+
+	regaddr = get_ext_irq_perf_reg(irq);
+	spin_lock_irqsave(&epic_lock, flags);
+	reg = bcm_perf_readl(regaddr);
+
+	if (BCMCPU_IS_6348())
+		reg |= EXTIRQ_CFG_CLEAR_6348(irq % 4);
+	else
+		reg |= EXTIRQ_CFG_CLEAR(irq % 4);
+
+	bcm_perf_writel(reg, regaddr);
+	spin_unlock_irqrestore(&epic_lock, flags);
+}
+
+static int bcm63xx_external_irq_set_type(struct irq_data *d,
+					 unsigned int flow_type)
+{
+	unsigned int irq = d->irq - IRQ_EXTERNAL_BASE;
+	u32 reg, regaddr;
+	int levelsense, sense, bothedge;
+	unsigned long flags;
+
+	flow_type &= IRQ_TYPE_SENSE_MASK;
+
+	if (flow_type == IRQ_TYPE_NONE)
+		flow_type = IRQ_TYPE_LEVEL_LOW;
+
+	levelsense = sense = bothedge = 0;
+	switch (flow_type) {
+	case IRQ_TYPE_EDGE_BOTH:
+		bothedge = 1;
+		break;
+
+	case IRQ_TYPE_EDGE_RISING:
+		sense = 1;
+		break;
+
+	case IRQ_TYPE_EDGE_FALLING:
+		break;
+
+	case IRQ_TYPE_LEVEL_HIGH:
+		levelsense = 1;
+		sense = 1;
+		break;
+
+	case IRQ_TYPE_LEVEL_LOW:
+		levelsense = 1;
+		break;
+
+	default:
+		pr_err("bogus flow type combination given !\n");
+		return -EINVAL;
+	}
+
+	regaddr = get_ext_irq_perf_reg(irq);
+	spin_lock_irqsave(&epic_lock, flags);
+	reg = bcm_perf_readl(regaddr);
+	irq %= 4;
+
+	switch (bcm63xx_get_cpu_id()) {
+	case BCM6348_CPU_ID:
+		if (levelsense)
+			reg |= EXTIRQ_CFG_LEVELSENSE_6348(irq);
+		else
+			reg &= ~EXTIRQ_CFG_LEVELSENSE_6348(irq);
+		if (sense)
+			reg |= EXTIRQ_CFG_SENSE_6348(irq);
+		else
+			reg &= ~EXTIRQ_CFG_SENSE_6348(irq);
+		if (bothedge)
+			reg |= EXTIRQ_CFG_BOTHEDGE_6348(irq);
+		else
+			reg &= ~EXTIRQ_CFG_BOTHEDGE_6348(irq);
+		break;
+
+	case BCM3368_CPU_ID:
+	case BCM6328_CPU_ID:
+	case BCM6338_CPU_ID:
+	case BCM6345_CPU_ID:
+	case BCM6358_CPU_ID:
+	case BCM6362_CPU_ID:
+	case BCM6368_CPU_ID:
+		if (levelsense)
+			reg |= EXTIRQ_CFG_LEVELSENSE(irq);
+		else
+			reg &= ~EXTIRQ_CFG_LEVELSENSE(irq);
+		if (sense)
+			reg |= EXTIRQ_CFG_SENSE(irq);
+		else
+			reg &= ~EXTIRQ_CFG_SENSE(irq);
+		if (bothedge)
+			reg |= EXTIRQ_CFG_BOTHEDGE(irq);
+		else
+			reg &= ~EXTIRQ_CFG_BOTHEDGE(irq);
+		break;
+	default:
+		BUG();
+	}
+
+	bcm_perf_writel(reg, regaddr);
+	spin_unlock_irqrestore(&epic_lock, flags);
+
+	irqd_set_trigger_type(d, flow_type);
+	if (flow_type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))
+		irq_set_handler_locked(d, handle_level_irq);
+	else
+		irq_set_handler_locked(d, handle_edge_irq);
+
+	return IRQ_SET_MASK_OK_NOCOPY;
+}
+
+#ifdef CONFIG_SMP
+static int bcm63xx_internal_set_affinity(struct irq_data *data,
+					 const struct cpumask *dest,
+					 bool force)
+{
+	if (!irqd_irq_disabled(data))
+		internal_irq_unmask(data, dest);
+
+	return 0;
+}
+#endif
+
+static struct irq_chip bcm63xx_internal_irq_chip = {
+	.name		= "bcm63xx_ipic",
+	.irq_mask	= bcm63xx_internal_irq_mask,
+	.irq_unmask	= bcm63xx_internal_irq_unmask,
+};
+
+static struct irq_chip bcm63xx_external_irq_chip = {
+	.name		= "bcm63xx_epic",
+	.irq_ack	= bcm63xx_external_irq_clear,
+
+	.irq_mask	= bcm63xx_external_irq_mask,
+	.irq_unmask	= bcm63xx_external_irq_unmask,
+
+	.irq_set_type	= bcm63xx_external_irq_set_type,
+};
+
+static void bcm63xx_init_irq(void)
+{
+	int irq_bits;
+
+	irq_stat_addr[0] = bcm63xx_regset_address(RSET_PERF);
+	irq_mask_addr[0] = bcm63xx_regset_address(RSET_PERF);
+	irq_stat_addr[1] = bcm63xx_regset_address(RSET_PERF);
+	irq_mask_addr[1] = bcm63xx_regset_address(RSET_PERF);
+
+	switch (bcm63xx_get_cpu_id()) {
+	case BCM3368_CPU_ID:
+		irq_stat_addr[0] += PERF_IRQSTAT_3368_REG;
+		irq_mask_addr[0] += PERF_IRQMASK_3368_REG;
+		irq_stat_addr[1] = 0;
+		irq_mask_addr[1] = 0;
+		irq_bits = 32;
+		ext_irq_count = 4;
+		ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_3368;
+		break;
+	case BCM6328_CPU_ID:
+		irq_stat_addr[0] += PERF_IRQSTAT_6328_REG(0);
+		irq_mask_addr[0] += PERF_IRQMASK_6328_REG(0);
+		irq_stat_addr[1] += PERF_IRQSTAT_6328_REG(1);
+		irq_mask_addr[1] += PERF_IRQMASK_6328_REG(1);
+		irq_bits = 64;
+		ext_irq_count = 4;
+		is_ext_irq_cascaded = 1;
+		ext_irq_start = BCM_6328_EXT_IRQ0 - IRQ_INTERNAL_BASE;
+		ext_irq_end = BCM_6328_EXT_IRQ3 - IRQ_INTERNAL_BASE;
+		ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6328;
+		break;
+	case BCM6338_CPU_ID:
+		irq_stat_addr[0] += PERF_IRQSTAT_6338_REG;
+		irq_mask_addr[0] += PERF_IRQMASK_6338_REG;
+		irq_stat_addr[1] = 0;
+		irq_mask_addr[1] = 0;
+		irq_bits = 32;
+		ext_irq_count = 4;
+		ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6338;
+		break;
+	case BCM6345_CPU_ID:
+		irq_stat_addr[0] += PERF_IRQSTAT_6345_REG;
+		irq_mask_addr[0] += PERF_IRQMASK_6345_REG;
+		irq_stat_addr[1] = 0;
+		irq_mask_addr[1] = 0;
+		irq_bits = 32;
+		ext_irq_count = 4;
+		ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6345;
+		break;
+	case BCM6348_CPU_ID:
+		irq_stat_addr[0] += PERF_IRQSTAT_6348_REG;
+		irq_mask_addr[0] += PERF_IRQMASK_6348_REG;
+		irq_stat_addr[1] = 0;
+		irq_mask_addr[1] = 0;
+		irq_bits = 32;
+		ext_irq_count = 4;
+		ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6348;
+		break;
+	case BCM6358_CPU_ID:
+		irq_stat_addr[0] += PERF_IRQSTAT_6358_REG(0);
+		irq_mask_addr[0] += PERF_IRQMASK_6358_REG(0);
+		irq_stat_addr[1] += PERF_IRQSTAT_6358_REG(1);
+		irq_mask_addr[1] += PERF_IRQMASK_6358_REG(1);
+		irq_bits = 32;
+		ext_irq_count = 4;
+		is_ext_irq_cascaded = 1;
+		ext_irq_start = BCM_6358_EXT_IRQ0 - IRQ_INTERNAL_BASE;
+		ext_irq_end = BCM_6358_EXT_IRQ3 - IRQ_INTERNAL_BASE;
+		ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6358;
+		break;
+	case BCM6362_CPU_ID:
+		irq_stat_addr[0] += PERF_IRQSTAT_6362_REG(0);
+		irq_mask_addr[0] += PERF_IRQMASK_6362_REG(0);
+		irq_stat_addr[1] += PERF_IRQSTAT_6362_REG(1);
+		irq_mask_addr[1] += PERF_IRQMASK_6362_REG(1);
+		irq_bits = 64;
+		ext_irq_count = 4;
+		is_ext_irq_cascaded = 1;
+		ext_irq_start = BCM_6362_EXT_IRQ0 - IRQ_INTERNAL_BASE;
+		ext_irq_end = BCM_6362_EXT_IRQ3 - IRQ_INTERNAL_BASE;
+		ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6362;
+		break;
+	case BCM6368_CPU_ID:
+		irq_stat_addr[0] += PERF_IRQSTAT_6368_REG(0);
+		irq_mask_addr[0] += PERF_IRQMASK_6368_REG(0);
+		irq_stat_addr[1] += PERF_IRQSTAT_6368_REG(1);
+		irq_mask_addr[1] += PERF_IRQMASK_6368_REG(1);
+		irq_bits = 64;
+		ext_irq_count = 6;
+		is_ext_irq_cascaded = 1;
+		ext_irq_start = BCM_6368_EXT_IRQ0 - IRQ_INTERNAL_BASE;
+		ext_irq_end = BCM_6368_EXT_IRQ5 - IRQ_INTERNAL_BASE;
+		ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6368;
+		ext_irq_cfg_reg2 = PERF_EXTIRQ_CFG_REG2_6368;
+		break;
+	default:
+		BUG();
+	}
+
+	if (irq_bits == 32) {
+		dispatch_internal = __dispatch_internal_32;
+		internal_irq_mask = __internal_irq_mask_32;
+		internal_irq_unmask = __internal_irq_unmask_32;
+	} else {
+		dispatch_internal = __dispatch_internal_64;
+		internal_irq_mask = __internal_irq_mask_64;
+		internal_irq_unmask = __internal_irq_unmask_64;
+	}
+}
+
+void __init arch_init_irq(void)
+{
+	int i, irq;
+
+	bcm63xx_init_irq();
+	mips_cpu_irq_init();
+	for (i = IRQ_INTERNAL_BASE; i < NR_IRQS; ++i)
+		irq_set_chip_and_handler(i, &bcm63xx_internal_irq_chip,
+					 handle_level_irq);
+
+	for (i = IRQ_EXTERNAL_BASE; i < IRQ_EXTERNAL_BASE + ext_irq_count; ++i)
+		irq_set_chip_and_handler(i, &bcm63xx_external_irq_chip,
+					 handle_edge_irq);
+
+	if (!is_ext_irq_cascaded) {
+		for (i = 3; i < 3 + ext_irq_count; ++i) {
+			irq = MIPS_CPU_IRQ_BASE + i;
+			if (request_irq(irq, no_action, IRQF_NO_THREAD,
+					"cascade_extirq", NULL)) {
+				pr_err("Failed to request irq %d (cascade_extirq)\n",
+				       irq);
+			}
+		}
+	}
+
+	irq = MIPS_CPU_IRQ_BASE + 2;
+	if (request_irq(irq, no_action, IRQF_NO_THREAD,	"cascade_ip2", NULL))
+		pr_err("Failed to request irq %d (cascade_ip2)\n", irq);
+#ifdef CONFIG_SMP
+	if (is_ext_irq_cascaded) {
+		irq = MIPS_CPU_IRQ_BASE + 3;
+		if (request_irq(irq, no_action,	IRQF_NO_THREAD, "cascade_ip3",
+				NULL))
+			pr_err("Failed to request irq %d (cascade_ip3)\n", irq);
+		bcm63xx_internal_irq_chip.irq_set_affinity =
+			bcm63xx_internal_set_affinity;
+
+		cpumask_clear(irq_default_affinity);
+		cpumask_set_cpu(smp_processor_id(), irq_default_affinity);
+	}
+#endif
+}