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, 925 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
new file mode 100644
index 000000000..52aede324
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
@@ -0,0 +1,925 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2014-2019 Intel Corporation
+ */
+
+#include "gem/i915_gem_lmem.h"
+#include "gt/intel_gt.h"
+#include "gt/intel_gt_irq.h"
+#include "gt/intel_gt_pm_irq.h"
+#include "gt/intel_gt_regs.h"
+#include "intel_guc.h"
+#include "intel_guc_ads.h"
+#include "intel_guc_capture.h"
+#include "intel_guc_slpc.h"
+#include "intel_guc_submission.h"
+#include "i915_drv.h"
+#include "i915_irq.h"
+
+/**
+ * DOC: GuC
+ *
+ * The GuC is a microcontroller inside the GT HW, introduced in gen9. The GuC is
+ * designed to offload some of the functionality usually performed by the host
+ * driver; currently the main operations it can take care of are:
+ *
+ * - Authentication of the HuC, which is required to fully enable HuC usage.
+ * - Low latency graphics context scheduling (a.k.a. GuC submission).
+ * - GT Power management.
+ *
+ * The enable_guc module parameter can be used to select which of those
+ * operations to enable within GuC. Note that not all the operations are
+ * supported on all gen9+ platforms.
+ *
+ * Enabling the GuC is not mandatory and therefore the firmware is only loaded
+ * if at least one of the operations is selected. However, not loading the GuC
+ * might result in the loss of some features that do require the GuC (currently
+ * just the HuC, but more are expected to land in the future).
+ */
+
+void intel_guc_notify(struct intel_guc *guc)
+{
+	struct intel_gt *gt = guc_to_gt(guc);
+
+	/*
+	 * On Gen11+, the value written to the register is passes as a payload
+	 * to the FW. However, the FW currently treats all values the same way
+	 * (H2G interrupt), so we can just write the value that the HW expects
+	 * on older gens.
+	 */
+	intel_uncore_write(gt->uncore, guc->notify_reg, GUC_SEND_TRIGGER);
+}
+
+static inline i915_reg_t guc_send_reg(struct intel_guc *guc, u32 i)
+{
+	GEM_BUG_ON(!guc->send_regs.base);
+	GEM_BUG_ON(!guc->send_regs.count);
+	GEM_BUG_ON(i >= guc->send_regs.count);
+
+	return _MMIO(guc->send_regs.base + 4 * i);
+}
+
+void intel_guc_init_send_regs(struct intel_guc *guc)
+{
+	struct intel_gt *gt = guc_to_gt(guc);
+	enum forcewake_domains fw_domains = 0;
+	unsigned int i;
+
+	GEM_BUG_ON(!guc->send_regs.base);
+	GEM_BUG_ON(!guc->send_regs.count);
+
+	for (i = 0; i < guc->send_regs.count; i++) {
+		fw_domains |= intel_uncore_forcewake_for_reg(gt->uncore,
+					guc_send_reg(guc, i),
+					FW_REG_READ | FW_REG_WRITE);
+	}
+	guc->send_regs.fw_domains = fw_domains;
+}
+
+static void gen9_reset_guc_interrupts(struct intel_guc *guc)
+{
+	struct intel_gt *gt = guc_to_gt(guc);
+
+	assert_rpm_wakelock_held(&gt->i915->runtime_pm);
+
+	spin_lock_irq(gt->irq_lock);
+	gen6_gt_pm_reset_iir(gt, gt->pm_guc_events);
+	spin_unlock_irq(gt->irq_lock);
+}
+
+static void gen9_enable_guc_interrupts(struct intel_guc *guc)
+{
+	struct intel_gt *gt = guc_to_gt(guc);
+
+	assert_rpm_wakelock_held(&gt->i915->runtime_pm);
+
+	spin_lock_irq(gt->irq_lock);
+	WARN_ON_ONCE(intel_uncore_read(gt->uncore, GEN8_GT_IIR(2)) &
+		     gt->pm_guc_events);
+	gen6_gt_pm_enable_irq(gt, gt->pm_guc_events);
+	spin_unlock_irq(gt->irq_lock);
+
+	guc->interrupts.enabled = true;
+}
+
+static void gen9_disable_guc_interrupts(struct intel_guc *guc)
+{
+	struct intel_gt *gt = guc_to_gt(guc);
+
+	assert_rpm_wakelock_held(&gt->i915->runtime_pm);
+	guc->interrupts.enabled = false;
+
+	spin_lock_irq(gt->irq_lock);
+
+	gen6_gt_pm_disable_irq(gt, gt->pm_guc_events);
+
+	spin_unlock_irq(gt->irq_lock);
+	intel_synchronize_irq(gt->i915);
+
+	gen9_reset_guc_interrupts(guc);
+}
+
+static bool __gen11_reset_guc_interrupts(struct intel_gt *gt)
+{
+	u32 irq = gt->type == GT_MEDIA ? MTL_MGUC : GEN11_GUC;
+
+	lockdep_assert_held(gt->irq_lock);
+	return gen11_gt_reset_one_iir(gt, 0, irq);
+}
+
+static void gen11_reset_guc_interrupts(struct intel_guc *guc)
+{
+	struct intel_gt *gt = guc_to_gt(guc);
+
+	spin_lock_irq(gt->irq_lock);
+	__gen11_reset_guc_interrupts(gt);
+	spin_unlock_irq(gt->irq_lock);
+}
+
+static void gen11_enable_guc_interrupts(struct intel_guc *guc)
+{
+	struct intel_gt *gt = guc_to_gt(guc);
+
+	spin_lock_irq(gt->irq_lock);
+	__gen11_reset_guc_interrupts(gt);
+	spin_unlock_irq(gt->irq_lock);
+
+	guc->interrupts.enabled = true;
+}
+
+static void gen11_disable_guc_interrupts(struct intel_guc *guc)
+{
+	struct intel_gt *gt = guc_to_gt(guc);
+
+	guc->interrupts.enabled = false;
+	intel_synchronize_irq(gt->i915);
+
+	gen11_reset_guc_interrupts(guc);
+}
+
+void intel_guc_init_early(struct intel_guc *guc)
+{
+	struct intel_gt *gt = guc_to_gt(guc);
+	struct drm_i915_private *i915 = gt->i915;
+
+	intel_uc_fw_init_early(&guc->fw, INTEL_UC_FW_TYPE_GUC);
+	intel_guc_ct_init_early(&guc->ct);
+	intel_guc_log_init_early(&guc->log);
+	intel_guc_submission_init_early(guc);
+	intel_guc_slpc_init_early(&guc->slpc);
+	intel_guc_rc_init_early(guc);
+
+	mutex_init(&guc->send_mutex);
+	spin_lock_init(&guc->irq_lock);
+	if (GRAPHICS_VER(i915) >= 11) {
+		guc->interrupts.reset = gen11_reset_guc_interrupts;
+		guc->interrupts.enable = gen11_enable_guc_interrupts;
+		guc->interrupts.disable = gen11_disable_guc_interrupts;
+		if (gt->type == GT_MEDIA) {
+			guc->notify_reg = MEDIA_GUC_HOST_INTERRUPT;
+			guc->send_regs.base = i915_mmio_reg_offset(MEDIA_SOFT_SCRATCH(0));
+		} else {
+			guc->notify_reg = GEN11_GUC_HOST_INTERRUPT;
+			guc->send_regs.base = i915_mmio_reg_offset(GEN11_SOFT_SCRATCH(0));
+		}
+
+		guc->send_regs.count = GEN11_SOFT_SCRATCH_COUNT;
+
+	} else {
+		guc->notify_reg = GUC_SEND_INTERRUPT;
+		guc->interrupts.reset = gen9_reset_guc_interrupts;
+		guc->interrupts.enable = gen9_enable_guc_interrupts;
+		guc->interrupts.disable = gen9_disable_guc_interrupts;
+		guc->send_regs.base = i915_mmio_reg_offset(SOFT_SCRATCH(0));
+		guc->send_regs.count = GUC_MAX_MMIO_MSG_LEN;
+		BUILD_BUG_ON(GUC_MAX_MMIO_MSG_LEN > SOFT_SCRATCH_COUNT);
+	}
+
+	intel_guc_enable_msg(guc, INTEL_GUC_RECV_MSG_EXCEPTION |
+				  INTEL_GUC_RECV_MSG_CRASH_DUMP_POSTED);
+}
+
+void intel_guc_init_late(struct intel_guc *guc)
+{
+	intel_guc_ads_init_late(guc);
+}
+
+static u32 guc_ctl_debug_flags(struct intel_guc *guc)
+{
+	u32 level = intel_guc_log_get_level(&guc->log);
+	u32 flags = 0;
+
+	if (!GUC_LOG_LEVEL_IS_VERBOSE(level))
+		flags |= GUC_LOG_DISABLED;
+	else
+		flags |= GUC_LOG_LEVEL_TO_VERBOSITY(level) <<
+			 GUC_LOG_VERBOSITY_SHIFT;
+
+	return flags;
+}
+
+static u32 guc_ctl_feature_flags(struct intel_guc *guc)
+{
+	u32 flags = 0;
+
+	if (!intel_guc_submission_is_used(guc))
+		flags |= GUC_CTL_DISABLE_SCHEDULER;
+
+	if (intel_guc_slpc_is_used(guc))
+		flags |= GUC_CTL_ENABLE_SLPC;
+
+	return flags;
+}
+
+static u32 guc_ctl_log_params_flags(struct intel_guc *guc)
+{
+	struct intel_guc_log *log = &guc->log;
+	u32 offset, flags;
+
+	GEM_BUG_ON(!log->sizes_initialised);
+
+	offset = intel_guc_ggtt_offset(guc, log->vma) >> PAGE_SHIFT;
+
+	flags = GUC_LOG_VALID |
+		GUC_LOG_NOTIFY_ON_HALF_FULL |
+		log->sizes[GUC_LOG_SECTIONS_DEBUG].flag |
+		log->sizes[GUC_LOG_SECTIONS_CAPTURE].flag |
+		(log->sizes[GUC_LOG_SECTIONS_CRASH].count << GUC_LOG_CRASH_SHIFT) |
+		(log->sizes[GUC_LOG_SECTIONS_DEBUG].count << GUC_LOG_DEBUG_SHIFT) |
+		(log->sizes[GUC_LOG_SECTIONS_CAPTURE].count << GUC_LOG_CAPTURE_SHIFT) |
+		(offset << GUC_LOG_BUF_ADDR_SHIFT);
+
+	return flags;
+}
+
+static u32 guc_ctl_ads_flags(struct intel_guc *guc)
+{
+	u32 ads = intel_guc_ggtt_offset(guc, guc->ads_vma) >> PAGE_SHIFT;
+	u32 flags = ads << GUC_ADS_ADDR_SHIFT;
+
+	return flags;
+}
+
+static u32 guc_ctl_wa_flags(struct intel_guc *guc)
+{
+	struct intel_gt *gt = guc_to_gt(guc);
+	u32 flags = 0;
+
+	/* Wa_22012773006:gen11,gen12 < XeHP */
+	if (GRAPHICS_VER(gt->i915) >= 11 &&
+	    GRAPHICS_VER_FULL(gt->i915) < IP_VER(12, 50))
+		flags |= GUC_WA_POLLCS;
+
+	/* Wa_16011759253:dg2_g10:a0 */
+	if (IS_DG2_GRAPHICS_STEP(gt->i915, G10, STEP_A0, STEP_B0))
+		flags |= GUC_WA_GAM_CREDITS;
+
+	/* Wa_14014475959:dg2 */
+	if (IS_DG2(gt->i915))
+		flags |= GUC_WA_HOLD_CCS_SWITCHOUT;
+
+	/*
+	 * Wa_14012197797:dg2_g10:a0,dg2_g11:a0
+	 * Wa_22011391025:dg2_g10,dg2_g11,dg2_g12
+	 *
+	 * The same WA bit is used for both and 22011391025 is applicable to
+	 * all DG2.
+	 */
+	if (IS_DG2(gt->i915))
+		flags |= GUC_WA_DUAL_QUEUE;
+
+	/* Wa_22011802037: graphics version 11/12 */
+	if (IS_GRAPHICS_VER(gt->i915, 11, 12))
+		flags |= GUC_WA_PRE_PARSER;
+
+	/* Wa_16011777198:dg2 */
+	if (IS_DG2_GRAPHICS_STEP(gt->i915, G10, STEP_A0, STEP_C0) ||
+	    IS_DG2_GRAPHICS_STEP(gt->i915, G11, STEP_A0, STEP_B0))
+		flags |= GUC_WA_RCS_RESET_BEFORE_RC6;
+
+	/*
+	 * Wa_22012727170:dg2_g10[a0-c0), dg2_g11[a0..)
+	 * Wa_22012727685:dg2_g11[a0..)
+	 */
+	if (IS_DG2_GRAPHICS_STEP(gt->i915, G10, STEP_A0, STEP_C0) ||
+	    IS_DG2_GRAPHICS_STEP(gt->i915, G11, STEP_A0, STEP_FOREVER))
+		flags |= GUC_WA_CONTEXT_ISOLATION;
+
+	/* Wa_16015675438 */
+	if (!RCS_MASK(gt))
+		flags |= GUC_WA_RCS_REGS_IN_CCS_REGS_LIST;
+
+	return flags;
+}
+
+static u32 guc_ctl_devid(struct intel_guc *guc)
+{
+	struct drm_i915_private *i915 = guc_to_gt(guc)->i915;
+
+	return (INTEL_DEVID(i915) << 16) | INTEL_REVID(i915);
+}
+
+/*
+ * Initialise the GuC parameter block before starting the firmware
+ * transfer. These parameters are read by the firmware on startup
+ * and cannot be changed thereafter.
+ */
+static void guc_init_params(struct intel_guc *guc)
+{
+	u32 *params = guc->params;
+	int i;
+
+	BUILD_BUG_ON(sizeof(guc->params) != GUC_CTL_MAX_DWORDS * sizeof(u32));
+
+	params[GUC_CTL_LOG_PARAMS] = guc_ctl_log_params_flags(guc);
+	params[GUC_CTL_FEATURE] = guc_ctl_feature_flags(guc);
+	params[GUC_CTL_DEBUG] = guc_ctl_debug_flags(guc);
+	params[GUC_CTL_ADS] = guc_ctl_ads_flags(guc);
+	params[GUC_CTL_WA] = guc_ctl_wa_flags(guc);
+	params[GUC_CTL_DEVID] = guc_ctl_devid(guc);
+
+	for (i = 0; i < GUC_CTL_MAX_DWORDS; i++)
+		DRM_DEBUG_DRIVER("param[%2d] = %#x\n", i, params[i]);
+}
+
+/*
+ * Initialise the GuC parameter block before starting the firmware
+ * transfer. These parameters are read by the firmware on startup
+ * and cannot be changed thereafter.
+ */
+void intel_guc_write_params(struct intel_guc *guc)
+{
+	struct intel_uncore *uncore = guc_to_gt(guc)->uncore;
+	int i;
+
+	/*
+	 * All SOFT_SCRATCH registers are in FORCEWAKE_GT domain and
+	 * they are power context saved so it's ok to release forcewake
+	 * when we are done here and take it again at xfer time.
+	 */
+	intel_uncore_forcewake_get(uncore, FORCEWAKE_GT);
+
+	intel_uncore_write(uncore, SOFT_SCRATCH(0), 0);
+
+	for (i = 0; i < GUC_CTL_MAX_DWORDS; i++)
+		intel_uncore_write(uncore, SOFT_SCRATCH(1 + i), guc->params[i]);
+
+	intel_uncore_forcewake_put(uncore, FORCEWAKE_GT);
+}
+
+void intel_guc_dump_time_info(struct intel_guc *guc, struct drm_printer *p)
+{
+	struct intel_gt *gt = guc_to_gt(guc);
+	intel_wakeref_t wakeref;
+	u32 stamp = 0;
+	u64 ktime;
+
+	with_intel_runtime_pm(&gt->i915->runtime_pm, wakeref)
+		stamp = intel_uncore_read(gt->uncore, GUCPMTIMESTAMP);
+	ktime = ktime_get_boottime_ns();
+
+	drm_printf(p, "Kernel timestamp: 0x%08llX [%llu]\n", ktime, ktime);
+	drm_printf(p, "GuC timestamp: 0x%08X [%u]\n", stamp, stamp);
+	drm_printf(p, "CS timestamp frequency: %u Hz, %u ns\n",
+		   gt->clock_frequency, gt->clock_period_ns);
+}
+
+int intel_guc_init(struct intel_guc *guc)
+{
+	struct intel_gt *gt = guc_to_gt(guc);
+	int ret;
+
+	ret = intel_uc_fw_init(&guc->fw);
+	if (ret)
+		goto out;
+
+	ret = intel_guc_log_create(&guc->log);
+	if (ret)
+		goto err_fw;
+
+	ret = intel_guc_capture_init(guc);
+	if (ret)
+		goto err_log;
+
+	ret = intel_guc_ads_create(guc);
+	if (ret)
+		goto err_capture;
+
+	GEM_BUG_ON(!guc->ads_vma);
+
+	ret = intel_guc_ct_init(&guc->ct);
+	if (ret)
+		goto err_ads;
+
+	if (intel_guc_submission_is_used(guc)) {
+		/*
+		 * This is stuff we need to have available at fw load time
+		 * if we are planning to enable submission later
+		 */
+		ret = intel_guc_submission_init(guc);
+		if (ret)
+			goto err_ct;
+	}
+
+	if (intel_guc_slpc_is_used(guc)) {
+		ret = intel_guc_slpc_init(&guc->slpc);
+		if (ret)
+			goto err_submission;
+	}
+
+	/* now that everything is perma-pinned, initialize the parameters */
+	guc_init_params(guc);
+
+	/* We need to notify the guc whenever we change the GGTT */
+	i915_ggtt_enable_guc(gt->ggtt);
+
+	intel_uc_fw_change_status(&guc->fw, INTEL_UC_FIRMWARE_LOADABLE);
+
+	return 0;
+
+err_submission:
+	intel_guc_submission_fini(guc);
+err_ct:
+	intel_guc_ct_fini(&guc->ct);
+err_ads:
+	intel_guc_ads_destroy(guc);
+err_capture:
+	intel_guc_capture_destroy(guc);
+err_log:
+	intel_guc_log_destroy(&guc->log);
+err_fw:
+	intel_uc_fw_fini(&guc->fw);
+out:
+	intel_uc_fw_change_status(&guc->fw, INTEL_UC_FIRMWARE_INIT_FAIL);
+	i915_probe_error(gt->i915, "failed with %d\n", ret);
+	return ret;
+}
+
+void intel_guc_fini(struct intel_guc *guc)
+{
+	struct intel_gt *gt = guc_to_gt(guc);
+
+	if (!intel_uc_fw_is_loadable(&guc->fw))
+		return;
+
+	i915_ggtt_disable_guc(gt->ggtt);
+
+	if (intel_guc_slpc_is_used(guc))
+		intel_guc_slpc_fini(&guc->slpc);
+
+	if (intel_guc_submission_is_used(guc))
+		intel_guc_submission_fini(guc);
+
+	intel_guc_ct_fini(&guc->ct);
+
+	intel_guc_ads_destroy(guc);
+	intel_guc_capture_destroy(guc);
+	intel_guc_log_destroy(&guc->log);
+	intel_uc_fw_fini(&guc->fw);
+}
+
+/*
+ * This function implements the MMIO based host to GuC interface.
+ */
+int intel_guc_send_mmio(struct intel_guc *guc, const u32 *request, u32 len,
+			u32 *response_buf, u32 response_buf_size)
+{
+	struct drm_i915_private *i915 = guc_to_gt(guc)->i915;
+	struct intel_uncore *uncore = guc_to_gt(guc)->uncore;
+	u32 header;
+	int i;
+	int ret;
+
+	GEM_BUG_ON(!len);
+	GEM_BUG_ON(len > guc->send_regs.count);
+
+	GEM_BUG_ON(FIELD_GET(GUC_HXG_MSG_0_ORIGIN, request[0]) != GUC_HXG_ORIGIN_HOST);
+	GEM_BUG_ON(FIELD_GET(GUC_HXG_MSG_0_TYPE, request[0]) != GUC_HXG_TYPE_REQUEST);
+
+	mutex_lock(&guc->send_mutex);
+	intel_uncore_forcewake_get(uncore, guc->send_regs.fw_domains);
+
+retry:
+	for (i = 0; i < len; i++)
+		intel_uncore_write(uncore, guc_send_reg(guc, i), request[i]);
+
+	intel_uncore_posting_read(uncore, guc_send_reg(guc, i - 1));
+
+	intel_guc_notify(guc);
+
+	/*
+	 * No GuC command should ever take longer than 10ms.
+	 * Fast commands should still complete in 10us.
+	 */
+	ret = __intel_wait_for_register_fw(uncore,
+					   guc_send_reg(guc, 0),
+					   GUC_HXG_MSG_0_ORIGIN,
+					   FIELD_PREP(GUC_HXG_MSG_0_ORIGIN,
+						      GUC_HXG_ORIGIN_GUC),
+					   10, 10, &header);
+	if (unlikely(ret)) {
+timeout:
+		drm_err(&i915->drm, "mmio request %#x: no reply %x\n",
+			request[0], header);
+		goto out;
+	}
+
+	if (FIELD_GET(GUC_HXG_MSG_0_TYPE, header) == GUC_HXG_TYPE_NO_RESPONSE_BUSY) {
+#define done ({ header = intel_uncore_read(uncore, guc_send_reg(guc, 0)); \
+		FIELD_GET(GUC_HXG_MSG_0_ORIGIN, header) != GUC_HXG_ORIGIN_GUC || \
+		FIELD_GET(GUC_HXG_MSG_0_TYPE, header) != GUC_HXG_TYPE_NO_RESPONSE_BUSY; })
+
+		ret = wait_for(done, 1000);
+		if (unlikely(ret))
+			goto timeout;
+		if (unlikely(FIELD_GET(GUC_HXG_MSG_0_ORIGIN, header) !=
+				       GUC_HXG_ORIGIN_GUC))
+			goto proto;
+#undef done
+	}
+
+	if (FIELD_GET(GUC_HXG_MSG_0_TYPE, header) == GUC_HXG_TYPE_NO_RESPONSE_RETRY) {
+		u32 reason = FIELD_GET(GUC_HXG_RETRY_MSG_0_REASON, header);
+
+		drm_dbg(&i915->drm, "mmio request %#x: retrying, reason %u\n",
+			request[0], reason);
+		goto retry;
+	}
+
+	if (FIELD_GET(GUC_HXG_MSG_0_TYPE, header) == GUC_HXG_TYPE_RESPONSE_FAILURE) {
+		u32 hint = FIELD_GET(GUC_HXG_FAILURE_MSG_0_HINT, header);
+		u32 error = FIELD_GET(GUC_HXG_FAILURE_MSG_0_ERROR, header);
+
+		drm_err(&i915->drm, "mmio request %#x: failure %x/%u\n",
+			request[0], error, hint);
+		ret = -ENXIO;
+		goto out;
+	}
+
+	if (FIELD_GET(GUC_HXG_MSG_0_TYPE, header) != GUC_HXG_TYPE_RESPONSE_SUCCESS) {
+proto:
+		drm_err(&i915->drm, "mmio request %#x: unexpected reply %#x\n",
+			request[0], header);
+		ret = -EPROTO;
+		goto out;
+	}
+
+	if (response_buf) {
+		int count = min(response_buf_size, guc->send_regs.count);
+
+		GEM_BUG_ON(!count);
+
+		response_buf[0] = header;
+
+		for (i = 1; i < count; i++)
+			response_buf[i] = intel_uncore_read(uncore,
+							    guc_send_reg(guc, i));
+
+		/* Use number of copied dwords as our return value */
+		ret = count;
+	} else {
+		/* Use data from the GuC response as our return value */
+		ret = FIELD_GET(GUC_HXG_RESPONSE_MSG_0_DATA0, header);
+	}
+
+out:
+	intel_uncore_forcewake_put(uncore, guc->send_regs.fw_domains);
+	mutex_unlock(&guc->send_mutex);
+
+	return ret;
+}
+
+int intel_guc_to_host_process_recv_msg(struct intel_guc *guc,
+				       const u32 *payload, u32 len)
+{
+	u32 msg;
+
+	if (unlikely(!len))
+		return -EPROTO;
+
+	/* Make sure to handle only enabled messages */
+	msg = payload[0] & guc->msg_enabled_mask;
+
+	if (msg & INTEL_GUC_RECV_MSG_CRASH_DUMP_POSTED)
+		drm_err(&guc_to_gt(guc)->i915->drm, "Received early GuC crash dump notification!\n");
+	if (msg & INTEL_GUC_RECV_MSG_EXCEPTION)
+		drm_err(&guc_to_gt(guc)->i915->drm, "Received early GuC exception notification!\n");
+
+	return 0;
+}
+
+/**
+ * intel_guc_auth_huc() - Send action to GuC to authenticate HuC ucode
+ * @guc: intel_guc structure
+ * @rsa_offset: rsa offset w.r.t ggtt base of huc vma
+ *
+ * Triggers a HuC firmware authentication request to the GuC via intel_guc_send
+ * INTEL_GUC_ACTION_AUTHENTICATE_HUC interface. This function is invoked by
+ * intel_huc_auth().
+ *
+ * Return:	non-zero code on error
+ */
+int intel_guc_auth_huc(struct intel_guc *guc, u32 rsa_offset)
+{
+	u32 action[] = {
+		INTEL_GUC_ACTION_AUTHENTICATE_HUC,
+		rsa_offset
+	};
+
+	return intel_guc_send(guc, action, ARRAY_SIZE(action));
+}
+
+/**
+ * intel_guc_suspend() - notify GuC entering suspend state
+ * @guc:	the guc
+ */
+int intel_guc_suspend(struct intel_guc *guc)
+{
+	int ret;
+	u32 action[] = {
+		INTEL_GUC_ACTION_CLIENT_SOFT_RESET,
+	};
+
+	if (!intel_guc_is_ready(guc))
+		return 0;
+
+	if (intel_guc_submission_is_used(guc)) {
+		/*
+		 * This H2G MMIO command tears down the GuC in two steps. First it will
+		 * generate a G2H CTB for every active context indicating a reset. In
+		 * practice the i915 shouldn't ever get a G2H as suspend should only be
+		 * called when the GPU is idle. Next, it tears down the CTBs and this
+		 * H2G MMIO command completes.
+		 *
+		 * Don't abort on a failure code from the GuC. Keep going and do the
+		 * clean up in santize() and re-initialisation on resume and hopefully
+		 * the error here won't be problematic.
+		 */
+		ret = intel_guc_send_mmio(guc, action, ARRAY_SIZE(action), NULL, 0);
+		if (ret)
+			DRM_ERROR("GuC suspend: RESET_CLIENT action failed with error %d!\n", ret);
+	}
+
+	/* Signal that the GuC isn't running. */
+	intel_guc_sanitize(guc);
+
+	return 0;
+}
+
+/**
+ * intel_guc_resume() - notify GuC resuming from suspend state
+ * @guc:	the guc
+ */
+int intel_guc_resume(struct intel_guc *guc)
+{
+	/*
+	 * NB: This function can still be called even if GuC submission is
+	 * disabled, e.g. if GuC is enabled for HuC authentication only. Thus,
+	 * if any code is later added here, it must be support doing nothing
+	 * if submission is disabled (as per intel_guc_suspend).
+	 */
+	return 0;
+}
+
+/**
+ * DOC: GuC Memory Management
+ *
+ * GuC can't allocate any memory for its own usage, so all the allocations must
+ * be handled by the host driver. GuC accesses the memory via the GGTT, with the
+ * exception of the top and bottom parts of the 4GB address space, which are
+ * instead re-mapped by the GuC HW to memory location of the FW itself (WOPCM)
+ * or other parts of the HW. The driver must take care not to place objects that
+ * the GuC is going to access in these reserved ranges. The layout of the GuC
+ * address space is shown below:
+ *
+ * ::
+ *
+ *     +===========> +====================+ <== FFFF_FFFF
+ *     ^             |      Reserved      |
+ *     |             +====================+ <== GUC_GGTT_TOP
+ *     |             |                    |
+ *     |             |        DRAM        |
+ *    GuC            |                    |
+ *  Address    +===> +====================+ <== GuC ggtt_pin_bias
+ *   Space     ^     |                    |
+ *     |       |     |                    |
+ *     |      GuC    |        GuC         |
+ *     |     WOPCM   |       WOPCM        |
+ *     |      Size   |                    |
+ *     |       |     |                    |
+ *     v       v     |                    |
+ *     +=======+===> +====================+ <== 0000_0000
+ *
+ * The lower part of GuC Address Space [0, ggtt_pin_bias) is mapped to GuC WOPCM
+ * while upper part of GuC Address Space [ggtt_pin_bias, GUC_GGTT_TOP) is mapped
+ * to DRAM. The value of the GuC ggtt_pin_bias is the GuC WOPCM size.
+ */
+
+/**
+ * intel_guc_allocate_vma() - Allocate a GGTT VMA for GuC usage
+ * @guc:	the guc
+ * @size:	size of area to allocate (both virtual space and memory)
+ *
+ * This is a wrapper to create an object for use with the GuC. In order to
+ * use it inside the GuC, an object needs to be pinned lifetime, so we allocate
+ * both some backing storage and a range inside the Global GTT. We must pin
+ * it in the GGTT somewhere other than than [0, GUC ggtt_pin_bias) because that
+ * range is reserved inside GuC.
+ *
+ * Return:	A i915_vma if successful, otherwise an ERR_PTR.
+ */
+struct i915_vma *intel_guc_allocate_vma(struct intel_guc *guc, u32 size)
+{
+	struct intel_gt *gt = guc_to_gt(guc);
+	struct drm_i915_gem_object *obj;
+	struct i915_vma *vma;
+	u64 flags;
+	int ret;
+
+	if (HAS_LMEM(gt->i915))
+		obj = i915_gem_object_create_lmem(gt->i915, size,
+						  I915_BO_ALLOC_CPU_CLEAR |
+						  I915_BO_ALLOC_CONTIGUOUS |
+						  I915_BO_ALLOC_PM_EARLY);
+	else
+		obj = i915_gem_object_create_shmem(gt->i915, size);
+
+	if (IS_ERR(obj))
+		return ERR_CAST(obj);
+
+	vma = i915_vma_instance(obj, &gt->ggtt->vm, NULL);
+	if (IS_ERR(vma))
+		goto err;
+
+	flags = PIN_OFFSET_BIAS | i915_ggtt_pin_bias(vma);
+	ret = i915_ggtt_pin(vma, NULL, 0, flags);
+	if (ret) {
+		vma = ERR_PTR(ret);
+		goto err;
+	}
+
+	return i915_vma_make_unshrinkable(vma);
+
+err:
+	i915_gem_object_put(obj);
+	return vma;
+}
+
+/**
+ * intel_guc_allocate_and_map_vma() - Allocate and map VMA for GuC usage
+ * @guc:	the guc
+ * @size:	size of area to allocate (both virtual space and memory)
+ * @out_vma:	return variable for the allocated vma pointer
+ * @out_vaddr:	return variable for the obj mapping
+ *
+ * This wrapper calls intel_guc_allocate_vma() and then maps the allocated
+ * object with I915_MAP_WB.
+ *
+ * Return:	0 if successful, a negative errno code otherwise.
+ */
+int intel_guc_allocate_and_map_vma(struct intel_guc *guc, u32 size,
+				   struct i915_vma **out_vma, void **out_vaddr)
+{
+	struct i915_vma *vma;
+	void *vaddr;
+
+	vma = intel_guc_allocate_vma(guc, size);
+	if (IS_ERR(vma))
+		return PTR_ERR(vma);
+
+	vaddr = i915_gem_object_pin_map_unlocked(vma->obj,
+						 i915_coherent_map_type(guc_to_gt(guc)->i915,
+									vma->obj, true));
+	if (IS_ERR(vaddr)) {
+		i915_vma_unpin_and_release(&vma, 0);
+		return PTR_ERR(vaddr);
+	}
+
+	*out_vma = vma;
+	*out_vaddr = vaddr;
+
+	return 0;
+}
+
+static int __guc_action_self_cfg(struct intel_guc *guc, u16 key, u16 len, u64 value)
+{
+	u32 request[HOST2GUC_SELF_CFG_REQUEST_MSG_LEN] = {
+		FIELD_PREP(GUC_HXG_MSG_0_ORIGIN, GUC_HXG_ORIGIN_HOST) |
+		FIELD_PREP(GUC_HXG_MSG_0_TYPE, GUC_HXG_TYPE_REQUEST) |
+		FIELD_PREP(GUC_HXG_REQUEST_MSG_0_ACTION, GUC_ACTION_HOST2GUC_SELF_CFG),
+		FIELD_PREP(HOST2GUC_SELF_CFG_REQUEST_MSG_1_KLV_KEY, key) |
+		FIELD_PREP(HOST2GUC_SELF_CFG_REQUEST_MSG_1_KLV_LEN, len),
+		FIELD_PREP(HOST2GUC_SELF_CFG_REQUEST_MSG_2_VALUE32, lower_32_bits(value)),
+		FIELD_PREP(HOST2GUC_SELF_CFG_REQUEST_MSG_3_VALUE64, upper_32_bits(value)),
+	};
+	int ret;
+
+	GEM_BUG_ON(len > 2);
+	GEM_BUG_ON(len == 1 && upper_32_bits(value));
+
+	/* Self config must go over MMIO */
+	ret = intel_guc_send_mmio(guc, request, ARRAY_SIZE(request), NULL, 0);
+
+	if (unlikely(ret < 0))
+		return ret;
+	if (unlikely(ret > 1))
+		return -EPROTO;
+	if (unlikely(!ret))
+		return -ENOKEY;
+
+	return 0;
+}
+
+static int __guc_self_cfg(struct intel_guc *guc, u16 key, u16 len, u64 value)
+{
+	struct drm_i915_private *i915 = guc_to_gt(guc)->i915;
+	int err = __guc_action_self_cfg(guc, key, len, value);
+
+	if (unlikely(err))
+		i915_probe_error(i915, "Unsuccessful self-config (%pe) key %#hx value %#llx\n",
+				 ERR_PTR(err), key, value);
+	return err;
+}
+
+int intel_guc_self_cfg32(struct intel_guc *guc, u16 key, u32 value)
+{
+	return __guc_self_cfg(guc, key, 1, value);
+}
+
+int intel_guc_self_cfg64(struct intel_guc *guc, u16 key, u64 value)
+{
+	return __guc_self_cfg(guc, key, 2, value);
+}
+
+/**
+ * intel_guc_load_status - dump information about GuC load status
+ * @guc: the GuC
+ * @p: the &drm_printer
+ *
+ * Pretty printer for GuC load status.
+ */
+void intel_guc_load_status(struct intel_guc *guc, struct drm_printer *p)
+{
+	struct intel_gt *gt = guc_to_gt(guc);
+	struct intel_uncore *uncore = gt->uncore;
+	intel_wakeref_t wakeref;
+
+	if (!intel_guc_is_supported(guc)) {
+		drm_printf(p, "GuC not supported\n");
+		return;
+	}
+
+	if (!intel_guc_is_wanted(guc)) {
+		drm_printf(p, "GuC disabled\n");
+		return;
+	}
+
+	intel_uc_fw_dump(&guc->fw, p);
+
+	with_intel_runtime_pm(uncore->rpm, wakeref) {
+		u32 status = intel_uncore_read(uncore, GUC_STATUS);
+		u32 i;
+
+		drm_printf(p, "GuC status 0x%08x:\n", status);
+		drm_printf(p, "\tBootrom status = 0x%x\n",
+			   (status & GS_BOOTROM_MASK) >> GS_BOOTROM_SHIFT);
+		drm_printf(p, "\tuKernel status = 0x%x\n",
+			   (status & GS_UKERNEL_MASK) >> GS_UKERNEL_SHIFT);
+		drm_printf(p, "\tMIA Core status = 0x%x\n",
+			   (status & GS_MIA_MASK) >> GS_MIA_SHIFT);
+		drm_puts(p, "Scratch registers:\n");
+		for (i = 0; i < 16; i++) {
+			drm_printf(p, "\t%2d: \t0x%x\n",
+				   i, intel_uncore_read(uncore, SOFT_SCRATCH(i)));
+		}
+	}
+}
+
+void intel_guc_write_barrier(struct intel_guc *guc)
+{
+	struct intel_gt *gt = guc_to_gt(guc);
+
+	if (i915_gem_object_is_lmem(guc->ct.vma->obj)) {
+		/*
+		 * Ensure intel_uncore_write_fw can be used rather than
+		 * intel_uncore_write.
+		 */
+		GEM_BUG_ON(guc->send_regs.fw_domains);
+
+		/*
+		 * This register is used by the i915 and GuC for MMIO based
+		 * communication. Once we are in this code CTBs are the only
+		 * method the i915 uses to communicate with the GuC so it is
+		 * safe to write to this register (a value of 0 is NOP for MMIO
+		 * communication). If we ever start mixing CTBs and MMIOs a new
+		 * register will have to be chosen. This function is also used
+		 * to enforce ordering of a work queue item write and an update
+		 * to the process descriptor. When a work queue is being used,
+		 * CTBs are also the only mechanism of communication.
+		 */
+		intel_uncore_write_fw(gt->uncore, GEN11_SOFT_SCRATCH(0), 0);
+	} else {
+		/* wmb() sufficient for a barrier if in smem */
+		wmb();
+	}
+}