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, 539 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/gt/intel_gt_irq.c b/drivers/gpu/drm/i915/gt/intel_gt_irq.c
new file mode 100644
index 000000000..6f6b9e04d
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/intel_gt_irq.c
@@ -0,0 +1,539 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include <linux/sched/clock.h>
+
+#include "i915_drv.h"
+#include "i915_irq.h"
+#include "intel_breadcrumbs.h"
+#include "intel_gt.h"
+#include "intel_gt_irq.h"
+#include "intel_gt_regs.h"
+#include "intel_uncore.h"
+#include "intel_rps.h"
+#include "pxp/intel_pxp_irq.h"
+
+static void guc_irq_handler(struct intel_guc *guc, u16 iir)
+{
+	if (unlikely(!guc->interrupts.enabled))
+		return;
+
+	if (iir & GUC_INTR_GUC2HOST)
+		intel_guc_to_host_event_handler(guc);
+}
+
+static u32
+gen11_gt_engine_identity(struct intel_gt *gt,
+			 const unsigned int bank, const unsigned int bit)
+{
+	void __iomem * const regs = gt->uncore->regs;
+	u32 timeout_ts;
+	u32 ident;
+
+	lockdep_assert_held(gt->irq_lock);
+
+	raw_reg_write(regs, GEN11_IIR_REG_SELECTOR(bank), BIT(bit));
+
+	/*
+	 * NB: Specs do not specify how long to spin wait,
+	 * so we do ~100us as an educated guess.
+	 */
+	timeout_ts = (local_clock() >> 10) + 100;
+	do {
+		ident = raw_reg_read(regs, GEN11_INTR_IDENTITY_REG(bank));
+	} while (!(ident & GEN11_INTR_DATA_VALID) &&
+		 !time_after32(local_clock() >> 10, timeout_ts));
+
+	if (unlikely(!(ident & GEN11_INTR_DATA_VALID))) {
+		drm_err(&gt->i915->drm,
+			"INTR_IDENTITY_REG%u:%u 0x%08x not valid!\n",
+			bank, bit, ident);
+		return 0;
+	}
+
+	raw_reg_write(regs, GEN11_INTR_IDENTITY_REG(bank),
+		      GEN11_INTR_DATA_VALID);
+
+	return ident;
+}
+
+static void
+gen11_other_irq_handler(struct intel_gt *gt, const u8 instance,
+			const u16 iir)
+{
+	struct intel_gt *media_gt = gt->i915->media_gt;
+
+	if (instance == OTHER_GUC_INSTANCE)
+		return guc_irq_handler(&gt->uc.guc, iir);
+	if (instance == OTHER_MEDIA_GUC_INSTANCE && media_gt)
+		return guc_irq_handler(&media_gt->uc.guc, iir);
+
+	if (instance == OTHER_GTPM_INSTANCE)
+		return gen11_rps_irq_handler(&gt->rps, iir);
+	if (instance == OTHER_MEDIA_GTPM_INSTANCE && media_gt)
+		return gen11_rps_irq_handler(&media_gt->rps, iir);
+
+	if (instance == OTHER_KCR_INSTANCE)
+		return intel_pxp_irq_handler(&gt->pxp, iir);
+
+	if (instance == OTHER_GSC_INSTANCE)
+		return intel_gsc_irq_handler(gt, iir);
+
+	WARN_ONCE(1, "unhandled other interrupt instance=0x%x, iir=0x%x\n",
+		  instance, iir);
+}
+
+static struct intel_gt *pick_gt(struct intel_gt *gt, u8 class, u8 instance)
+{
+	struct intel_gt *media_gt = gt->i915->media_gt;
+
+	/* we expect the non-media gt to be passed in */
+	GEM_BUG_ON(gt == media_gt);
+
+	if (!media_gt)
+		return gt;
+
+	switch (class) {
+	case VIDEO_DECODE_CLASS:
+	case VIDEO_ENHANCEMENT_CLASS:
+		return media_gt;
+	case OTHER_CLASS:
+		if (instance == OTHER_GSC_INSTANCE && HAS_ENGINE(media_gt, GSC0))
+			return media_gt;
+		fallthrough;
+	default:
+		return gt;
+	}
+}
+
+static void
+gen11_gt_identity_handler(struct intel_gt *gt, const u32 identity)
+{
+	const u8 class = GEN11_INTR_ENGINE_CLASS(identity);
+	const u8 instance = GEN11_INTR_ENGINE_INSTANCE(identity);
+	const u16 intr = GEN11_INTR_ENGINE_INTR(identity);
+
+	if (unlikely(!intr))
+		return;
+
+	/*
+	 * Platforms with standalone media have the media and GSC engines in
+	 * another GT.
+	 */
+	gt = pick_gt(gt, class, instance);
+
+	if (class <= MAX_ENGINE_CLASS && instance <= MAX_ENGINE_INSTANCE) {
+		struct intel_engine_cs *engine = gt->engine_class[class][instance];
+		if (engine)
+			return intel_engine_cs_irq(engine, intr);
+	}
+
+	if (class == OTHER_CLASS)
+		return gen11_other_irq_handler(gt, instance, intr);
+
+	WARN_ONCE(1, "unknown interrupt class=0x%x, instance=0x%x, intr=0x%x\n",
+		  class, instance, intr);
+}
+
+static void
+gen11_gt_bank_handler(struct intel_gt *gt, const unsigned int bank)
+{
+	void __iomem * const regs = gt->uncore->regs;
+	unsigned long intr_dw;
+	unsigned int bit;
+
+	lockdep_assert_held(gt->irq_lock);
+
+	intr_dw = raw_reg_read(regs, GEN11_GT_INTR_DW(bank));
+
+	for_each_set_bit(bit, &intr_dw, 32) {
+		const u32 ident = gen11_gt_engine_identity(gt, bank, bit);
+
+		gen11_gt_identity_handler(gt, ident);
+	}
+
+	/* Clear must be after shared has been served for engine */
+	raw_reg_write(regs, GEN11_GT_INTR_DW(bank), intr_dw);
+}
+
+void gen11_gt_irq_handler(struct intel_gt *gt, const u32 master_ctl)
+{
+	unsigned int bank;
+
+	spin_lock(gt->irq_lock);
+
+	for (bank = 0; bank < 2; bank++) {
+		if (master_ctl & GEN11_GT_DW_IRQ(bank))
+			gen11_gt_bank_handler(gt, bank);
+	}
+
+	spin_unlock(gt->irq_lock);
+}
+
+bool gen11_gt_reset_one_iir(struct intel_gt *gt,
+			    const unsigned int bank, const unsigned int bit)
+{
+	void __iomem * const regs = gt->uncore->regs;
+	u32 dw;
+
+	lockdep_assert_held(gt->irq_lock);
+
+	dw = raw_reg_read(regs, GEN11_GT_INTR_DW(bank));
+	if (dw & BIT(bit)) {
+		/*
+		 * According to the BSpec, DW_IIR bits cannot be cleared without
+		 * first servicing the Selector & Shared IIR registers.
+		 */
+		gen11_gt_engine_identity(gt, bank, bit);
+
+		/*
+		 * We locked GT INT DW by reading it. If we want to (try
+		 * to) recover from this successfully, we need to clear
+		 * our bit, otherwise we are locking the register for
+		 * everybody.
+		 */
+		raw_reg_write(regs, GEN11_GT_INTR_DW(bank), BIT(bit));
+
+		return true;
+	}
+
+	return false;
+}
+
+void gen11_gt_irq_reset(struct intel_gt *gt)
+{
+	struct intel_uncore *uncore = gt->uncore;
+
+	/* Disable RCS, BCS, VCS and VECS class engines. */
+	intel_uncore_write(uncore, GEN11_RENDER_COPY_INTR_ENABLE, 0);
+	intel_uncore_write(uncore, GEN11_VCS_VECS_INTR_ENABLE,	  0);
+	if (CCS_MASK(gt))
+		intel_uncore_write(uncore, GEN12_CCS_RSVD_INTR_ENABLE, 0);
+	if (HAS_HECI_GSC(gt->i915) || HAS_ENGINE(gt, GSC0))
+		intel_uncore_write(uncore, GEN11_GUNIT_CSME_INTR_ENABLE, 0);
+
+	/* Restore masks irqs on RCS, BCS, VCS and VECS engines. */
+	intel_uncore_write(uncore, GEN11_RCS0_RSVD_INTR_MASK,	~0);
+	intel_uncore_write(uncore, GEN11_BCS_RSVD_INTR_MASK,	~0);
+	if (HAS_ENGINE(gt, BCS1) || HAS_ENGINE(gt, BCS2))
+		intel_uncore_write(uncore, XEHPC_BCS1_BCS2_INTR_MASK, ~0);
+	if (HAS_ENGINE(gt, BCS3) || HAS_ENGINE(gt, BCS4))
+		intel_uncore_write(uncore, XEHPC_BCS3_BCS4_INTR_MASK, ~0);
+	if (HAS_ENGINE(gt, BCS5) || HAS_ENGINE(gt, BCS6))
+		intel_uncore_write(uncore, XEHPC_BCS5_BCS6_INTR_MASK, ~0);
+	if (HAS_ENGINE(gt, BCS7) || HAS_ENGINE(gt, BCS8))
+		intel_uncore_write(uncore, XEHPC_BCS7_BCS8_INTR_MASK, ~0);
+	intel_uncore_write(uncore, GEN11_VCS0_VCS1_INTR_MASK,	~0);
+	intel_uncore_write(uncore, GEN11_VCS2_VCS3_INTR_MASK,	~0);
+	if (HAS_ENGINE(gt, VCS4) || HAS_ENGINE(gt, VCS5))
+		intel_uncore_write(uncore, GEN12_VCS4_VCS5_INTR_MASK,   ~0);
+	if (HAS_ENGINE(gt, VCS6) || HAS_ENGINE(gt, VCS7))
+		intel_uncore_write(uncore, GEN12_VCS6_VCS7_INTR_MASK,   ~0);
+	intel_uncore_write(uncore, GEN11_VECS0_VECS1_INTR_MASK,	~0);
+	if (HAS_ENGINE(gt, VECS2) || HAS_ENGINE(gt, VECS3))
+		intel_uncore_write(uncore, GEN12_VECS2_VECS3_INTR_MASK, ~0);
+	if (HAS_ENGINE(gt, CCS0) || HAS_ENGINE(gt, CCS1))
+		intel_uncore_write(uncore, GEN12_CCS0_CCS1_INTR_MASK, ~0);
+	if (HAS_ENGINE(gt, CCS2) || HAS_ENGINE(gt, CCS3))
+		intel_uncore_write(uncore, GEN12_CCS2_CCS3_INTR_MASK, ~0);
+	if (HAS_HECI_GSC(gt->i915) || HAS_ENGINE(gt, GSC0))
+		intel_uncore_write(uncore, GEN11_GUNIT_CSME_INTR_MASK, ~0);
+
+	intel_uncore_write(uncore, GEN11_GPM_WGBOXPERF_INTR_ENABLE, 0);
+	intel_uncore_write(uncore, GEN11_GPM_WGBOXPERF_INTR_MASK,  ~0);
+	intel_uncore_write(uncore, GEN11_GUC_SG_INTR_ENABLE, 0);
+	intel_uncore_write(uncore, GEN11_GUC_SG_INTR_MASK,  ~0);
+
+	intel_uncore_write(uncore, GEN11_CRYPTO_RSVD_INTR_ENABLE, 0);
+	intel_uncore_write(uncore, GEN11_CRYPTO_RSVD_INTR_MASK,  ~0);
+}
+
+void gen11_gt_irq_postinstall(struct intel_gt *gt)
+{
+	struct intel_uncore *uncore = gt->uncore;
+	u32 irqs = GT_RENDER_USER_INTERRUPT;
+	u32 guc_mask = intel_uc_wants_guc(&gt->uc) ? GUC_INTR_GUC2HOST : 0;
+	u32 gsc_mask = 0;
+	u32 dmask;
+	u32 smask;
+
+	if (!intel_uc_wants_guc_submission(&gt->uc))
+		irqs |= GT_CS_MASTER_ERROR_INTERRUPT |
+			GT_CONTEXT_SWITCH_INTERRUPT |
+			GT_WAIT_SEMAPHORE_INTERRUPT;
+
+	dmask = irqs << 16 | irqs;
+	smask = irqs << 16;
+
+	if (HAS_ENGINE(gt, GSC0))
+		gsc_mask = irqs;
+	else if (HAS_HECI_GSC(gt->i915))
+		gsc_mask = GSC_IRQ_INTF(0) | GSC_IRQ_INTF(1);
+
+	BUILD_BUG_ON(irqs & 0xffff0000);
+
+	/* Enable RCS, BCS, VCS and VECS class interrupts. */
+	intel_uncore_write(uncore, GEN11_RENDER_COPY_INTR_ENABLE, dmask);
+	intel_uncore_write(uncore, GEN11_VCS_VECS_INTR_ENABLE, dmask);
+	if (CCS_MASK(gt))
+		intel_uncore_write(uncore, GEN12_CCS_RSVD_INTR_ENABLE, smask);
+	if (gsc_mask)
+		intel_uncore_write(uncore, GEN11_GUNIT_CSME_INTR_ENABLE, gsc_mask);
+
+	/* Unmask irqs on RCS, BCS, VCS and VECS engines. */
+	intel_uncore_write(uncore, GEN11_RCS0_RSVD_INTR_MASK, ~smask);
+	intel_uncore_write(uncore, GEN11_BCS_RSVD_INTR_MASK, ~smask);
+	if (HAS_ENGINE(gt, BCS1) || HAS_ENGINE(gt, BCS2))
+		intel_uncore_write(uncore, XEHPC_BCS1_BCS2_INTR_MASK, ~dmask);
+	if (HAS_ENGINE(gt, BCS3) || HAS_ENGINE(gt, BCS4))
+		intel_uncore_write(uncore, XEHPC_BCS3_BCS4_INTR_MASK, ~dmask);
+	if (HAS_ENGINE(gt, BCS5) || HAS_ENGINE(gt, BCS6))
+		intel_uncore_write(uncore, XEHPC_BCS5_BCS6_INTR_MASK, ~dmask);
+	if (HAS_ENGINE(gt, BCS7) || HAS_ENGINE(gt, BCS8))
+		intel_uncore_write(uncore, XEHPC_BCS7_BCS8_INTR_MASK, ~dmask);
+	intel_uncore_write(uncore, GEN11_VCS0_VCS1_INTR_MASK, ~dmask);
+	intel_uncore_write(uncore, GEN11_VCS2_VCS3_INTR_MASK, ~dmask);
+	if (HAS_ENGINE(gt, VCS4) || HAS_ENGINE(gt, VCS5))
+		intel_uncore_write(uncore, GEN12_VCS4_VCS5_INTR_MASK, ~dmask);
+	if (HAS_ENGINE(gt, VCS6) || HAS_ENGINE(gt, VCS7))
+		intel_uncore_write(uncore, GEN12_VCS6_VCS7_INTR_MASK, ~dmask);
+	intel_uncore_write(uncore, GEN11_VECS0_VECS1_INTR_MASK, ~dmask);
+	if (HAS_ENGINE(gt, VECS2) || HAS_ENGINE(gt, VECS3))
+		intel_uncore_write(uncore, GEN12_VECS2_VECS3_INTR_MASK, ~dmask);
+	if (HAS_ENGINE(gt, CCS0) || HAS_ENGINE(gt, CCS1))
+		intel_uncore_write(uncore, GEN12_CCS0_CCS1_INTR_MASK, ~dmask);
+	if (HAS_ENGINE(gt, CCS2) || HAS_ENGINE(gt, CCS3))
+		intel_uncore_write(uncore, GEN12_CCS2_CCS3_INTR_MASK, ~dmask);
+	if (gsc_mask)
+		intel_uncore_write(uncore, GEN11_GUNIT_CSME_INTR_MASK, ~gsc_mask);
+
+	if (guc_mask) {
+		/* the enable bit is common for both GTs but the masks are separate */
+		u32 mask = gt->type == GT_MEDIA ?
+			REG_FIELD_PREP(ENGINE0_MASK, guc_mask) :
+			REG_FIELD_PREP(ENGINE1_MASK, guc_mask);
+
+		intel_uncore_write(uncore, GEN11_GUC_SG_INTR_ENABLE,
+				   REG_FIELD_PREP(ENGINE1_MASK, guc_mask));
+
+		/* we might not be the first GT to write this reg */
+		intel_uncore_rmw(uncore, MTL_GUC_MGUC_INTR_MASK, mask, 0);
+	}
+
+	/*
+	 * RPS interrupts will get enabled/disabled on demand when RPS itself
+	 * is enabled/disabled.
+	 */
+	gt->pm_ier = 0x0;
+	gt->pm_imr = ~gt->pm_ier;
+	intel_uncore_write(uncore, GEN11_GPM_WGBOXPERF_INTR_ENABLE, 0);
+	intel_uncore_write(uncore, GEN11_GPM_WGBOXPERF_INTR_MASK,  ~0);
+}
+
+void gen5_gt_irq_handler(struct intel_gt *gt, u32 gt_iir)
+{
+	if (gt_iir & GT_RENDER_USER_INTERRUPT)
+		intel_engine_cs_irq(gt->engine_class[RENDER_CLASS][0],
+				    gt_iir);
+
+	if (gt_iir & ILK_BSD_USER_INTERRUPT)
+		intel_engine_cs_irq(gt->engine_class[VIDEO_DECODE_CLASS][0],
+				    gt_iir);
+}
+
+static void gen7_parity_error_irq_handler(struct intel_gt *gt, u32 iir)
+{
+	if (!HAS_L3_DPF(gt->i915))
+		return;
+
+	spin_lock(gt->irq_lock);
+	gen5_gt_disable_irq(gt, GT_PARITY_ERROR(gt->i915));
+	spin_unlock(gt->irq_lock);
+
+	if (iir & GT_RENDER_L3_PARITY_ERROR_INTERRUPT_S1)
+		gt->i915->l3_parity.which_slice |= 1 << 1;
+
+	if (iir & GT_RENDER_L3_PARITY_ERROR_INTERRUPT)
+		gt->i915->l3_parity.which_slice |= 1 << 0;
+
+	schedule_work(&gt->i915->l3_parity.error_work);
+}
+
+void gen6_gt_irq_handler(struct intel_gt *gt, u32 gt_iir)
+{
+	if (gt_iir & GT_RENDER_USER_INTERRUPT)
+		intel_engine_cs_irq(gt->engine_class[RENDER_CLASS][0],
+				    gt_iir);
+
+	if (gt_iir & GT_BSD_USER_INTERRUPT)
+		intel_engine_cs_irq(gt->engine_class[VIDEO_DECODE_CLASS][0],
+				    gt_iir >> 12);
+
+	if (gt_iir & GT_BLT_USER_INTERRUPT)
+		intel_engine_cs_irq(gt->engine_class[COPY_ENGINE_CLASS][0],
+				    gt_iir >> 22);
+
+	if (gt_iir & (GT_BLT_CS_ERROR_INTERRUPT |
+		      GT_BSD_CS_ERROR_INTERRUPT |
+		      GT_CS_MASTER_ERROR_INTERRUPT))
+		drm_dbg(&gt->i915->drm, "Command parser error, gt_iir 0x%08x\n",
+			gt_iir);
+
+	if (gt_iir & GT_PARITY_ERROR(gt->i915))
+		gen7_parity_error_irq_handler(gt, gt_iir);
+}
+
+void gen8_gt_irq_handler(struct intel_gt *gt, u32 master_ctl)
+{
+	void __iomem * const regs = gt->uncore->regs;
+	u32 iir;
+
+	if (master_ctl & (GEN8_GT_RCS_IRQ | GEN8_GT_BCS_IRQ)) {
+		iir = raw_reg_read(regs, GEN8_GT_IIR(0));
+		if (likely(iir)) {
+			intel_engine_cs_irq(gt->engine_class[RENDER_CLASS][0],
+					    iir >> GEN8_RCS_IRQ_SHIFT);
+			intel_engine_cs_irq(gt->engine_class[COPY_ENGINE_CLASS][0],
+					    iir >> GEN8_BCS_IRQ_SHIFT);
+			raw_reg_write(regs, GEN8_GT_IIR(0), iir);
+		}
+	}
+
+	if (master_ctl & (GEN8_GT_VCS0_IRQ | GEN8_GT_VCS1_IRQ)) {
+		iir = raw_reg_read(regs, GEN8_GT_IIR(1));
+		if (likely(iir)) {
+			intel_engine_cs_irq(gt->engine_class[VIDEO_DECODE_CLASS][0],
+					    iir >> GEN8_VCS0_IRQ_SHIFT);
+			intel_engine_cs_irq(gt->engine_class[VIDEO_DECODE_CLASS][1],
+					    iir >> GEN8_VCS1_IRQ_SHIFT);
+			raw_reg_write(regs, GEN8_GT_IIR(1), iir);
+		}
+	}
+
+	if (master_ctl & GEN8_GT_VECS_IRQ) {
+		iir = raw_reg_read(regs, GEN8_GT_IIR(3));
+		if (likely(iir)) {
+			intel_engine_cs_irq(gt->engine_class[VIDEO_ENHANCEMENT_CLASS][0],
+					    iir >> GEN8_VECS_IRQ_SHIFT);
+			raw_reg_write(regs, GEN8_GT_IIR(3), iir);
+		}
+	}
+
+	if (master_ctl & (GEN8_GT_PM_IRQ | GEN8_GT_GUC_IRQ)) {
+		iir = raw_reg_read(regs, GEN8_GT_IIR(2));
+		if (likely(iir)) {
+			gen6_rps_irq_handler(&gt->rps, iir);
+			guc_irq_handler(&gt->uc.guc, iir >> 16);
+			raw_reg_write(regs, GEN8_GT_IIR(2), iir);
+		}
+	}
+}
+
+void gen8_gt_irq_reset(struct intel_gt *gt)
+{
+	struct intel_uncore *uncore = gt->uncore;
+
+	GEN8_IRQ_RESET_NDX(uncore, GT, 0);
+	GEN8_IRQ_RESET_NDX(uncore, GT, 1);
+	GEN8_IRQ_RESET_NDX(uncore, GT, 2);
+	GEN8_IRQ_RESET_NDX(uncore, GT, 3);
+}
+
+void gen8_gt_irq_postinstall(struct intel_gt *gt)
+{
+	/* These are interrupts we'll toggle with the ring mask register */
+	const u32 irqs =
+		GT_CS_MASTER_ERROR_INTERRUPT |
+		GT_RENDER_USER_INTERRUPT |
+		GT_CONTEXT_SWITCH_INTERRUPT |
+		GT_WAIT_SEMAPHORE_INTERRUPT;
+	const u32 gt_interrupts[] = {
+		irqs << GEN8_RCS_IRQ_SHIFT | irqs << GEN8_BCS_IRQ_SHIFT,
+		irqs << GEN8_VCS0_IRQ_SHIFT | irqs << GEN8_VCS1_IRQ_SHIFT,
+		0,
+		irqs << GEN8_VECS_IRQ_SHIFT,
+	};
+	struct intel_uncore *uncore = gt->uncore;
+
+	gt->pm_ier = 0x0;
+	gt->pm_imr = ~gt->pm_ier;
+	GEN8_IRQ_INIT_NDX(uncore, GT, 0, ~gt_interrupts[0], gt_interrupts[0]);
+	GEN8_IRQ_INIT_NDX(uncore, GT, 1, ~gt_interrupts[1], gt_interrupts[1]);
+	/*
+	 * RPS interrupts will get enabled/disabled on demand when RPS itself
+	 * is enabled/disabled. Same wil be the case for GuC interrupts.
+	 */
+	GEN8_IRQ_INIT_NDX(uncore, GT, 2, gt->pm_imr, gt->pm_ier);
+	GEN8_IRQ_INIT_NDX(uncore, GT, 3, ~gt_interrupts[3], gt_interrupts[3]);
+}
+
+static void gen5_gt_update_irq(struct intel_gt *gt,
+			       u32 interrupt_mask,
+			       u32 enabled_irq_mask)
+{
+	lockdep_assert_held(gt->irq_lock);
+
+	GEM_BUG_ON(enabled_irq_mask & ~interrupt_mask);
+
+	gt->gt_imr &= ~interrupt_mask;
+	gt->gt_imr |= (~enabled_irq_mask & interrupt_mask);
+	intel_uncore_write(gt->uncore, GTIMR, gt->gt_imr);
+}
+
+void gen5_gt_enable_irq(struct intel_gt *gt, u32 mask)
+{
+	gen5_gt_update_irq(gt, mask, mask);
+	intel_uncore_posting_read_fw(gt->uncore, GTIMR);
+}
+
+void gen5_gt_disable_irq(struct intel_gt *gt, u32 mask)
+{
+	gen5_gt_update_irq(gt, mask, 0);
+}
+
+void gen5_gt_irq_reset(struct intel_gt *gt)
+{
+	struct intel_uncore *uncore = gt->uncore;
+
+	GEN3_IRQ_RESET(uncore, GT);
+	if (GRAPHICS_VER(gt->i915) >= 6)
+		GEN3_IRQ_RESET(uncore, GEN6_PM);
+}
+
+void gen5_gt_irq_postinstall(struct intel_gt *gt)
+{
+	struct intel_uncore *uncore = gt->uncore;
+	u32 pm_irqs = 0;
+	u32 gt_irqs = 0;
+
+	gt->gt_imr = ~0;
+	if (HAS_L3_DPF(gt->i915)) {
+		/* L3 parity interrupt is always unmasked. */
+		gt->gt_imr = ~GT_PARITY_ERROR(gt->i915);
+		gt_irqs |= GT_PARITY_ERROR(gt->i915);
+	}
+
+	gt_irqs |= GT_RENDER_USER_INTERRUPT;
+	if (GRAPHICS_VER(gt->i915) == 5)
+		gt_irqs |= ILK_BSD_USER_INTERRUPT;
+	else
+		gt_irqs |= GT_BLT_USER_INTERRUPT | GT_BSD_USER_INTERRUPT;
+
+	GEN3_IRQ_INIT(uncore, GT, gt->gt_imr, gt_irqs);
+
+	if (GRAPHICS_VER(gt->i915) >= 6) {
+		/*
+		 * RPS interrupts will get enabled/disabled on demand when RPS
+		 * itself is enabled/disabled.
+		 */
+		if (HAS_ENGINE(gt, VECS0)) {
+			pm_irqs |= PM_VEBOX_USER_INTERRUPT;
+			gt->pm_ier |= PM_VEBOX_USER_INTERRUPT;
+		}
+
+		gt->pm_imr = 0xffffffff;
+		GEN3_IRQ_INIT(uncore, GEN6_PM, gt->pm_imr, pm_irqs);
+	}
+}