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, 657 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h
new file mode 100644
index 000000000..3db537698
--- /dev/null
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h
@@ -0,0 +1,657 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2016 Intel Corporation
+ */
+
+#ifndef __I915_GEM_OBJECT_H__
+#define __I915_GEM_OBJECT_H__
+
+#include <drm/drm_gem.h>
+#include <drm/drm_file.h>
+#include <drm/drm_device.h>
+
+#include "display/intel_frontbuffer.h"
+#include "intel_memory_region.h"
+#include "i915_gem_object_types.h"
+#include "i915_gem_gtt.h"
+#include "i915_gem_ww.h"
+#include "i915_vma_types.h"
+
+enum intel_region_id;
+
+/*
+ * XXX: There is a prevalence of the assumption that we fit the
+ * object's page count inside a 32bit _signed_ variable. Let's document
+ * this and catch if we ever need to fix it. In the meantime, if you do
+ * spot such a local variable, please consider fixing!
+ *
+ * Aside from our own locals (for which we have no excuse!):
+ * - sg_table embeds unsigned int for num_pages
+ * - get_user_pages*() mixed ints with longs
+ */
+#define GEM_CHECK_SIZE_OVERFLOW(sz) \
+	GEM_WARN_ON((sz) >> PAGE_SHIFT > INT_MAX)
+
+static inline bool i915_gem_object_size_2big(u64 size)
+{
+	struct drm_i915_gem_object *obj;
+
+	if (GEM_CHECK_SIZE_OVERFLOW(size))
+		return true;
+
+	if (overflows_type(size, obj->base.size))
+		return true;
+
+	return false;
+}
+
+void i915_gem_init__objects(struct drm_i915_private *i915);
+
+void i915_objects_module_exit(void);
+int i915_objects_module_init(void);
+
+struct drm_i915_gem_object *i915_gem_object_alloc(void);
+void i915_gem_object_free(struct drm_i915_gem_object *obj);
+
+void i915_gem_object_init(struct drm_i915_gem_object *obj,
+			  const struct drm_i915_gem_object_ops *ops,
+			  struct lock_class_key *key,
+			  unsigned alloc_flags);
+
+void __i915_gem_object_fini(struct drm_i915_gem_object *obj);
+
+struct drm_i915_gem_object *
+i915_gem_object_create_shmem(struct drm_i915_private *i915,
+			     resource_size_t size);
+struct drm_i915_gem_object *
+i915_gem_object_create_shmem_from_data(struct drm_i915_private *i915,
+				       const void *data, resource_size_t size);
+struct drm_i915_gem_object *
+__i915_gem_object_create_user(struct drm_i915_private *i915, u64 size,
+			      struct intel_memory_region **placements,
+			      unsigned int n_placements);
+
+extern const struct drm_i915_gem_object_ops i915_gem_shmem_ops;
+
+void __i915_gem_object_release_shmem(struct drm_i915_gem_object *obj,
+				     struct sg_table *pages,
+				     bool needs_clflush);
+
+int i915_gem_object_pwrite_phys(struct drm_i915_gem_object *obj,
+				const struct drm_i915_gem_pwrite *args);
+int i915_gem_object_pread_phys(struct drm_i915_gem_object *obj,
+			       const struct drm_i915_gem_pread *args);
+
+int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj, int align);
+void i915_gem_object_put_pages_shmem(struct drm_i915_gem_object *obj,
+				     struct sg_table *pages);
+void i915_gem_object_put_pages_phys(struct drm_i915_gem_object *obj,
+				    struct sg_table *pages);
+
+void i915_gem_flush_free_objects(struct drm_i915_private *i915);
+
+struct sg_table *
+__i915_gem_object_unset_pages(struct drm_i915_gem_object *obj);
+
+/**
+ * i915_gem_object_lookup_rcu - look up a temporary GEM object from its handle
+ * @filp: DRM file private date
+ * @handle: userspace handle
+ *
+ * Returns:
+ *
+ * A pointer to the object named by the handle if such exists on @filp, NULL
+ * otherwise. This object is only valid whilst under the RCU read lock, and
+ * note carefully the object may be in the process of being destroyed.
+ */
+static inline struct drm_i915_gem_object *
+i915_gem_object_lookup_rcu(struct drm_file *file, u32 handle)
+{
+#ifdef CONFIG_LOCKDEP
+	WARN_ON(debug_locks && !lock_is_held(&rcu_lock_map));
+#endif
+	return idr_find(&file->object_idr, handle);
+}
+
+static inline struct drm_i915_gem_object *
+i915_gem_object_get_rcu(struct drm_i915_gem_object *obj)
+{
+	if (obj && !kref_get_unless_zero(&obj->base.refcount))
+		obj = NULL;
+
+	return obj;
+}
+
+static inline struct drm_i915_gem_object *
+i915_gem_object_lookup(struct drm_file *file, u32 handle)
+{
+	struct drm_i915_gem_object *obj;
+
+	rcu_read_lock();
+	obj = i915_gem_object_lookup_rcu(file, handle);
+	obj = i915_gem_object_get_rcu(obj);
+	rcu_read_unlock();
+
+	return obj;
+}
+
+__deprecated
+struct drm_gem_object *
+drm_gem_object_lookup(struct drm_file *file, u32 handle);
+
+__attribute__((nonnull))
+static inline struct drm_i915_gem_object *
+i915_gem_object_get(struct drm_i915_gem_object *obj)
+{
+	drm_gem_object_get(&obj->base);
+	return obj;
+}
+
+__attribute__((nonnull))
+static inline void
+i915_gem_object_put(struct drm_i915_gem_object *obj)
+{
+	__drm_gem_object_put(&obj->base);
+}
+
+#define assert_object_held(obj) dma_resv_assert_held((obj)->base.resv)
+
+/*
+ * If more than one potential simultaneous locker, assert held.
+ */
+static inline void assert_object_held_shared(const struct drm_i915_gem_object *obj)
+{
+	/*
+	 * Note mm list lookup is protected by
+	 * kref_get_unless_zero().
+	 */
+	if (IS_ENABLED(CONFIG_LOCKDEP) &&
+	    kref_read(&obj->base.refcount) > 0)
+		assert_object_held(obj);
+}
+
+static inline int __i915_gem_object_lock(struct drm_i915_gem_object *obj,
+					 struct i915_gem_ww_ctx *ww,
+					 bool intr)
+{
+	int ret;
+
+	if (intr)
+		ret = dma_resv_lock_interruptible(obj->base.resv, ww ? &ww->ctx : NULL);
+	else
+		ret = dma_resv_lock(obj->base.resv, ww ? &ww->ctx : NULL);
+
+	if (!ret && ww) {
+		i915_gem_object_get(obj);
+		list_add_tail(&obj->obj_link, &ww->obj_list);
+	}
+	if (ret == -EALREADY)
+		ret = 0;
+
+	if (ret == -EDEADLK) {
+		i915_gem_object_get(obj);
+		ww->contended = obj;
+	}
+
+	return ret;
+}
+
+static inline int i915_gem_object_lock(struct drm_i915_gem_object *obj,
+				       struct i915_gem_ww_ctx *ww)
+{
+	return __i915_gem_object_lock(obj, ww, ww && ww->intr);
+}
+
+static inline int i915_gem_object_lock_interruptible(struct drm_i915_gem_object *obj,
+						     struct i915_gem_ww_ctx *ww)
+{
+	WARN_ON(ww && !ww->intr);
+	return __i915_gem_object_lock(obj, ww, true);
+}
+
+static inline bool i915_gem_object_trylock(struct drm_i915_gem_object *obj,
+					   struct i915_gem_ww_ctx *ww)
+{
+	if (!ww)
+		return dma_resv_trylock(obj->base.resv);
+	else
+		return ww_mutex_trylock(&obj->base.resv->lock, &ww->ctx);
+}
+
+static inline void i915_gem_object_unlock(struct drm_i915_gem_object *obj)
+{
+	if (obj->ops->adjust_lru)
+		obj->ops->adjust_lru(obj);
+
+	dma_resv_unlock(obj->base.resv);
+}
+
+static inline void
+i915_gem_object_set_readonly(struct drm_i915_gem_object *obj)
+{
+	obj->flags |= I915_BO_READONLY;
+}
+
+static inline bool
+i915_gem_object_is_readonly(const struct drm_i915_gem_object *obj)
+{
+	return obj->flags & I915_BO_READONLY;
+}
+
+static inline bool
+i915_gem_object_is_contiguous(const struct drm_i915_gem_object *obj)
+{
+	return obj->flags & I915_BO_ALLOC_CONTIGUOUS;
+}
+
+static inline bool
+i915_gem_object_is_volatile(const struct drm_i915_gem_object *obj)
+{
+	return obj->flags & I915_BO_ALLOC_VOLATILE;
+}
+
+static inline void
+i915_gem_object_set_volatile(struct drm_i915_gem_object *obj)
+{
+	obj->flags |= I915_BO_ALLOC_VOLATILE;
+}
+
+static inline bool
+i915_gem_object_has_tiling_quirk(struct drm_i915_gem_object *obj)
+{
+	return test_bit(I915_TILING_QUIRK_BIT, &obj->flags);
+}
+
+static inline void
+i915_gem_object_set_tiling_quirk(struct drm_i915_gem_object *obj)
+{
+	set_bit(I915_TILING_QUIRK_BIT, &obj->flags);
+}
+
+static inline void
+i915_gem_object_clear_tiling_quirk(struct drm_i915_gem_object *obj)
+{
+	clear_bit(I915_TILING_QUIRK_BIT, &obj->flags);
+}
+
+static inline bool
+i915_gem_object_is_protected(const struct drm_i915_gem_object *obj)
+{
+	return obj->flags & I915_BO_PROTECTED;
+}
+
+static inline bool
+i915_gem_object_type_has(const struct drm_i915_gem_object *obj,
+			 unsigned long flags)
+{
+	return obj->ops->flags & flags;
+}
+
+bool i915_gem_object_has_struct_page(const struct drm_i915_gem_object *obj);
+
+bool i915_gem_object_has_iomem(const struct drm_i915_gem_object *obj);
+
+static inline bool
+i915_gem_object_is_shrinkable(const struct drm_i915_gem_object *obj)
+{
+	return i915_gem_object_type_has(obj, I915_GEM_OBJECT_IS_SHRINKABLE);
+}
+
+static inline bool
+i915_gem_object_has_self_managed_shrink_list(const struct drm_i915_gem_object *obj)
+{
+	return i915_gem_object_type_has(obj, I915_GEM_OBJECT_SELF_MANAGED_SHRINK_LIST);
+}
+
+static inline bool
+i915_gem_object_is_proxy(const struct drm_i915_gem_object *obj)
+{
+	return i915_gem_object_type_has(obj, I915_GEM_OBJECT_IS_PROXY);
+}
+
+static inline bool
+i915_gem_object_never_mmap(const struct drm_i915_gem_object *obj)
+{
+	return i915_gem_object_type_has(obj, I915_GEM_OBJECT_NO_MMAP);
+}
+
+static inline bool
+i915_gem_object_is_framebuffer(const struct drm_i915_gem_object *obj)
+{
+	return READ_ONCE(obj->frontbuffer);
+}
+
+static inline unsigned int
+i915_gem_object_get_tiling(const struct drm_i915_gem_object *obj)
+{
+	return obj->tiling_and_stride & TILING_MASK;
+}
+
+static inline bool
+i915_gem_object_is_tiled(const struct drm_i915_gem_object *obj)
+{
+	return i915_gem_object_get_tiling(obj) != I915_TILING_NONE;
+}
+
+static inline unsigned int
+i915_gem_object_get_stride(const struct drm_i915_gem_object *obj)
+{
+	return obj->tiling_and_stride & STRIDE_MASK;
+}
+
+static inline unsigned int
+i915_gem_tile_height(unsigned int tiling)
+{
+	GEM_BUG_ON(!tiling);
+	return tiling == I915_TILING_Y ? 32 : 8;
+}
+
+static inline unsigned int
+i915_gem_object_get_tile_height(const struct drm_i915_gem_object *obj)
+{
+	return i915_gem_tile_height(i915_gem_object_get_tiling(obj));
+}
+
+static inline unsigned int
+i915_gem_object_get_tile_row_size(const struct drm_i915_gem_object *obj)
+{
+	return (i915_gem_object_get_stride(obj) *
+		i915_gem_object_get_tile_height(obj));
+}
+
+int i915_gem_object_set_tiling(struct drm_i915_gem_object *obj,
+			       unsigned int tiling, unsigned int stride);
+
+struct scatterlist *
+__i915_gem_object_get_sg(struct drm_i915_gem_object *obj,
+			 struct i915_gem_object_page_iter *iter,
+			 unsigned int n,
+			 unsigned int *offset, bool dma);
+
+static inline struct scatterlist *
+i915_gem_object_get_sg(struct drm_i915_gem_object *obj,
+		       unsigned int n,
+		       unsigned int *offset)
+{
+	return __i915_gem_object_get_sg(obj, &obj->mm.get_page, n, offset, false);
+}
+
+static inline struct scatterlist *
+i915_gem_object_get_sg_dma(struct drm_i915_gem_object *obj,
+			   unsigned int n,
+			   unsigned int *offset)
+{
+	return __i915_gem_object_get_sg(obj, &obj->mm.get_dma_page, n, offset, true);
+}
+
+struct page *
+i915_gem_object_get_page(struct drm_i915_gem_object *obj,
+			 unsigned int n);
+
+struct page *
+i915_gem_object_get_dirty_page(struct drm_i915_gem_object *obj,
+			       unsigned int n);
+
+dma_addr_t
+i915_gem_object_get_dma_address_len(struct drm_i915_gem_object *obj,
+				    unsigned long n,
+				    unsigned int *len);
+
+dma_addr_t
+i915_gem_object_get_dma_address(struct drm_i915_gem_object *obj,
+				unsigned long n);
+
+void __i915_gem_object_set_pages(struct drm_i915_gem_object *obj,
+				 struct sg_table *pages);
+
+int ____i915_gem_object_get_pages(struct drm_i915_gem_object *obj);
+int __i915_gem_object_get_pages(struct drm_i915_gem_object *obj);
+
+static inline int __must_check
+i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
+{
+	assert_object_held(obj);
+
+	if (atomic_inc_not_zero(&obj->mm.pages_pin_count))
+		return 0;
+
+	return __i915_gem_object_get_pages(obj);
+}
+
+int i915_gem_object_pin_pages_unlocked(struct drm_i915_gem_object *obj);
+
+static inline bool
+i915_gem_object_has_pages(struct drm_i915_gem_object *obj)
+{
+	return !IS_ERR_OR_NULL(READ_ONCE(obj->mm.pages));
+}
+
+static inline void
+__i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
+{
+	GEM_BUG_ON(!i915_gem_object_has_pages(obj));
+
+	atomic_inc(&obj->mm.pages_pin_count);
+}
+
+static inline bool
+i915_gem_object_has_pinned_pages(struct drm_i915_gem_object *obj)
+{
+	return atomic_read(&obj->mm.pages_pin_count);
+}
+
+static inline void
+__i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
+{
+	GEM_BUG_ON(!i915_gem_object_has_pages(obj));
+	GEM_BUG_ON(!i915_gem_object_has_pinned_pages(obj));
+
+	atomic_dec(&obj->mm.pages_pin_count);
+}
+
+static inline void
+i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
+{
+	__i915_gem_object_unpin_pages(obj);
+}
+
+int __i915_gem_object_put_pages(struct drm_i915_gem_object *obj);
+int i915_gem_object_truncate(struct drm_i915_gem_object *obj);
+
+/**
+ * i915_gem_object_pin_map - return a contiguous mapping of the entire object
+ * @obj: the object to map into kernel address space
+ * @type: the type of mapping, used to select pgprot_t
+ *
+ * Calls i915_gem_object_pin_pages() to prevent reaping of the object's
+ * pages and then returns a contiguous mapping of the backing storage into
+ * the kernel address space. Based on the @type of mapping, the PTE will be
+ * set to either WriteBack or WriteCombine (via pgprot_t).
+ *
+ * The caller is responsible for calling i915_gem_object_unpin_map() when the
+ * mapping is no longer required.
+ *
+ * Returns the pointer through which to access the mapped object, or an
+ * ERR_PTR() on error.
+ */
+void *__must_check i915_gem_object_pin_map(struct drm_i915_gem_object *obj,
+					   enum i915_map_type type);
+
+void *__must_check i915_gem_object_pin_map_unlocked(struct drm_i915_gem_object *obj,
+						    enum i915_map_type type);
+
+enum i915_map_type i915_coherent_map_type(struct drm_i915_private *i915,
+					  struct drm_i915_gem_object *obj,
+					  bool always_coherent);
+
+void __i915_gem_object_flush_map(struct drm_i915_gem_object *obj,
+				 unsigned long offset,
+				 unsigned long size);
+static inline void i915_gem_object_flush_map(struct drm_i915_gem_object *obj)
+{
+	__i915_gem_object_flush_map(obj, 0, obj->base.size);
+}
+
+/**
+ * i915_gem_object_unpin_map - releases an earlier mapping
+ * @obj: the object to unmap
+ *
+ * After pinning the object and mapping its pages, once you are finished
+ * with your access, call i915_gem_object_unpin_map() to release the pin
+ * upon the mapping. Once the pin count reaches zero, that mapping may be
+ * removed.
+ */
+static inline void i915_gem_object_unpin_map(struct drm_i915_gem_object *obj)
+{
+	i915_gem_object_unpin_pages(obj);
+}
+
+void __i915_gem_object_release_map(struct drm_i915_gem_object *obj);
+
+int i915_gem_object_prepare_read(struct drm_i915_gem_object *obj,
+				 unsigned int *needs_clflush);
+int i915_gem_object_prepare_write(struct drm_i915_gem_object *obj,
+				  unsigned int *needs_clflush);
+#define CLFLUSH_BEFORE	BIT(0)
+#define CLFLUSH_AFTER	BIT(1)
+#define CLFLUSH_FLAGS	(CLFLUSH_BEFORE | CLFLUSH_AFTER)
+
+static inline void
+i915_gem_object_finish_access(struct drm_i915_gem_object *obj)
+{
+	i915_gem_object_unpin_pages(obj);
+}
+
+int i915_gem_object_get_moving_fence(struct drm_i915_gem_object *obj,
+				     struct dma_fence **fence);
+int i915_gem_object_wait_moving_fence(struct drm_i915_gem_object *obj,
+				      bool intr);
+bool i915_gem_object_has_unknown_state(struct drm_i915_gem_object *obj);
+
+void i915_gem_object_set_cache_coherency(struct drm_i915_gem_object *obj,
+					 unsigned int cache_level);
+bool i915_gem_object_can_bypass_llc(struct drm_i915_gem_object *obj);
+void i915_gem_object_flush_if_display(struct drm_i915_gem_object *obj);
+void i915_gem_object_flush_if_display_locked(struct drm_i915_gem_object *obj);
+bool i915_gem_cpu_write_needs_clflush(struct drm_i915_gem_object *obj);
+
+int __must_check
+i915_gem_object_set_to_wc_domain(struct drm_i915_gem_object *obj, bool write);
+int __must_check
+i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj, bool write);
+int __must_check
+i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write);
+struct i915_vma * __must_check
+i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
+				     struct i915_gem_ww_ctx *ww,
+				     u32 alignment,
+				     const struct i915_gtt_view *view,
+				     unsigned int flags);
+
+void i915_gem_object_make_unshrinkable(struct drm_i915_gem_object *obj);
+void i915_gem_object_make_shrinkable(struct drm_i915_gem_object *obj);
+void __i915_gem_object_make_shrinkable(struct drm_i915_gem_object *obj);
+void __i915_gem_object_make_purgeable(struct drm_i915_gem_object *obj);
+void i915_gem_object_make_purgeable(struct drm_i915_gem_object *obj);
+
+static inline void __start_cpu_write(struct drm_i915_gem_object *obj)
+{
+	obj->read_domains = I915_GEM_DOMAIN_CPU;
+	obj->write_domain = I915_GEM_DOMAIN_CPU;
+	if (i915_gem_cpu_write_needs_clflush(obj))
+		obj->cache_dirty = true;
+}
+
+void i915_gem_fence_wait_priority(struct dma_fence *fence,
+				  const struct i915_sched_attr *attr);
+
+int i915_gem_object_wait(struct drm_i915_gem_object *obj,
+			 unsigned int flags,
+			 long timeout);
+int i915_gem_object_wait_priority(struct drm_i915_gem_object *obj,
+				  unsigned int flags,
+				  const struct i915_sched_attr *attr);
+
+void __i915_gem_object_flush_frontbuffer(struct drm_i915_gem_object *obj,
+					 enum fb_op_origin origin);
+void __i915_gem_object_invalidate_frontbuffer(struct drm_i915_gem_object *obj,
+					      enum fb_op_origin origin);
+
+static inline void
+i915_gem_object_flush_frontbuffer(struct drm_i915_gem_object *obj,
+				  enum fb_op_origin origin)
+{
+	if (unlikely(rcu_access_pointer(obj->frontbuffer)))
+		__i915_gem_object_flush_frontbuffer(obj, origin);
+}
+
+static inline void
+i915_gem_object_invalidate_frontbuffer(struct drm_i915_gem_object *obj,
+				       enum fb_op_origin origin)
+{
+	if (unlikely(rcu_access_pointer(obj->frontbuffer)))
+		__i915_gem_object_invalidate_frontbuffer(obj, origin);
+}
+
+int i915_gem_object_read_from_page(struct drm_i915_gem_object *obj, u64 offset, void *dst, int size);
+
+bool i915_gem_object_is_shmem(const struct drm_i915_gem_object *obj);
+
+void __i915_gem_free_object_rcu(struct rcu_head *head);
+
+void __i915_gem_object_pages_fini(struct drm_i915_gem_object *obj);
+
+void __i915_gem_free_object(struct drm_i915_gem_object *obj);
+
+bool i915_gem_object_evictable(struct drm_i915_gem_object *obj);
+
+bool i915_gem_object_migratable(struct drm_i915_gem_object *obj);
+
+int i915_gem_object_migrate(struct drm_i915_gem_object *obj,
+			    struct i915_gem_ww_ctx *ww,
+			    enum intel_region_id id);
+int __i915_gem_object_migrate(struct drm_i915_gem_object *obj,
+			      struct i915_gem_ww_ctx *ww,
+			      enum intel_region_id id,
+			      unsigned int flags);
+
+bool i915_gem_object_can_migrate(struct drm_i915_gem_object *obj,
+				 enum intel_region_id id);
+
+int i915_gem_object_wait_migration(struct drm_i915_gem_object *obj,
+				   unsigned int flags);
+
+bool i915_gem_object_placement_possible(struct drm_i915_gem_object *obj,
+					enum intel_memory_type type);
+
+bool i915_gem_object_needs_ccs_pages(struct drm_i915_gem_object *obj);
+
+int shmem_sg_alloc_table(struct drm_i915_private *i915, struct sg_table *st,
+			 size_t size, struct intel_memory_region *mr,
+			 struct address_space *mapping,
+			 unsigned int max_segment);
+void shmem_sg_free_table(struct sg_table *st, struct address_space *mapping,
+			 bool dirty, bool backup);
+void __shmem_writeback(size_t size, struct address_space *mapping);
+
+#ifdef CONFIG_MMU_NOTIFIER
+static inline bool
+i915_gem_object_is_userptr(struct drm_i915_gem_object *obj)
+{
+	return obj->userptr.notifier.mm;
+}
+
+int i915_gem_object_userptr_submit_init(struct drm_i915_gem_object *obj);
+int i915_gem_object_userptr_submit_done(struct drm_i915_gem_object *obj);
+int i915_gem_object_userptr_validate(struct drm_i915_gem_object *obj);
+#else
+static inline bool i915_gem_object_is_userptr(struct drm_i915_gem_object *obj) { return false; }
+
+static inline int i915_gem_object_userptr_submit_init(struct drm_i915_gem_object *obj) { GEM_BUG_ON(1); return -ENODEV; }
+static inline int i915_gem_object_userptr_submit_done(struct drm_i915_gem_object *obj) { GEM_BUG_ON(1); return -ENODEV; }
+static inline int i915_gem_object_userptr_validate(struct drm_i915_gem_object *obj) { GEM_BUG_ON(1); return -ENODEV; }
+
+#endif
+
+#endif