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, 949 insertions, 0 deletions

diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
new file mode 100644
index 000000000..447e664e4
--- /dev/null
+++ b/include/drm/drm_plane.h
@@ -0,0 +1,949 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef __DRM_PLANE_H__
+#define __DRM_PLANE_H__
+
+#include <linux/list.h>
+#include <linux/ctype.h>
+#include <drm/drm_mode_object.h>
+#include <drm/drm_color_mgmt.h>
+#include <drm/drm_rect.h>
+#include <drm/drm_modeset_lock.h>
+#include <drm/drm_util.h>
+
+struct drm_crtc;
+struct drm_printer;
+struct drm_modeset_acquire_ctx;
+
+enum drm_scaling_filter {
+	DRM_SCALING_FILTER_DEFAULT,
+	DRM_SCALING_FILTER_NEAREST_NEIGHBOR,
+};
+
+/**
+ * struct drm_plane_state - mutable plane state
+ *
+ * Please note that the destination coordinates @crtc_x, @crtc_y, @crtc_h and
+ * @crtc_w and the source coordinates @src_x, @src_y, @src_h and @src_w are the
+ * raw coordinates provided by userspace. Drivers should use
+ * drm_atomic_helper_check_plane_state() and only use the derived rectangles in
+ * @src and @dst to program the hardware.
+ */
+struct drm_plane_state {
+	/** @plane: backpointer to the plane */
+	struct drm_plane *plane;
+
+	/**
+	 * @crtc:
+	 *
+	 * Currently bound CRTC, NULL if disabled. Do not this write directly,
+	 * use drm_atomic_set_crtc_for_plane()
+	 */
+	struct drm_crtc *crtc;
+
+	/**
+	 * @fb:
+	 *
+	 * Currently bound framebuffer. Do not write this directly, use
+	 * drm_atomic_set_fb_for_plane()
+	 */
+	struct drm_framebuffer *fb;
+
+	/**
+	 * @fence:
+	 *
+	 * Optional fence to wait for before scanning out @fb. The core atomic
+	 * code will set this when userspace is using explicit fencing. Do not
+	 * write this field directly for a driver's implicit fence.
+	 *
+	 * Drivers should store any implicit fence in this from their
+	 * &drm_plane_helper_funcs.prepare_fb callback. See drm_gem_plane_helper_prepare_fb()
+	 * and drm_gem_simple_display_pipe_prepare_fb() for suitable helpers.
+	 */
+	struct dma_fence *fence;
+
+	/**
+	 * @crtc_x:
+	 *
+	 * Left position of visible portion of plane on crtc, signed dest
+	 * location allows it to be partially off screen.
+	 */
+
+	int32_t crtc_x;
+	/**
+	 * @crtc_y:
+	 *
+	 * Upper position of visible portion of plane on crtc, signed dest
+	 * location allows it to be partially off screen.
+	 */
+	int32_t crtc_y;
+
+	/** @crtc_w: width of visible portion of plane on crtc */
+	/** @crtc_h: height of visible portion of plane on crtc */
+	uint32_t crtc_w, crtc_h;
+
+	/**
+	 * @src_x: left position of visible portion of plane within plane (in
+	 * 16.16 fixed point).
+	 */
+	uint32_t src_x;
+	/**
+	 * @src_y: upper position of visible portion of plane within plane (in
+	 * 16.16 fixed point).
+	 */
+	uint32_t src_y;
+	/** @src_w: width of visible portion of plane (in 16.16) */
+	/** @src_h: height of visible portion of plane (in 16.16) */
+	uint32_t src_h, src_w;
+
+	/**
+	 * @alpha:
+	 * Opacity of the plane with 0 as completely transparent and 0xffff as
+	 * completely opaque. See drm_plane_create_alpha_property() for more
+	 * details.
+	 */
+	u16 alpha;
+
+	/**
+	 * @pixel_blend_mode:
+	 * The alpha blending equation selection, describing how the pixels from
+	 * the current plane are composited with the background. Value can be
+	 * one of DRM_MODE_BLEND_*
+	 */
+	uint16_t pixel_blend_mode;
+
+	/**
+	 * @rotation:
+	 * Rotation of the plane. See drm_plane_create_rotation_property() for
+	 * more details.
+	 */
+	unsigned int rotation;
+
+	/**
+	 * @zpos:
+	 * Priority of the given plane on crtc (optional).
+	 *
+	 * User-space may set mutable zpos properties so that multiple active
+	 * planes on the same CRTC have identical zpos values. This is a
+	 * user-space bug, but drivers can solve the conflict by comparing the
+	 * plane object IDs; the plane with a higher ID is stacked on top of a
+	 * plane with a lower ID.
+	 *
+	 * See drm_plane_create_zpos_property() and
+	 * drm_plane_create_zpos_immutable_property() for more details.
+	 */
+	unsigned int zpos;
+
+	/**
+	 * @normalized_zpos:
+	 * Normalized value of zpos: unique, range from 0 to N-1 where N is the
+	 * number of active planes for given crtc. Note that the driver must set
+	 * &drm_mode_config.normalize_zpos or call drm_atomic_normalize_zpos() to
+	 * update this before it can be trusted.
+	 */
+	unsigned int normalized_zpos;
+
+	/**
+	 * @color_encoding:
+	 *
+	 * Color encoding for non RGB formats
+	 */
+	enum drm_color_encoding color_encoding;
+
+	/**
+	 * @color_range:
+	 *
+	 * Color range for non RGB formats
+	 */
+	enum drm_color_range color_range;
+
+	/**
+	 * @fb_damage_clips:
+	 *
+	 * Blob representing damage (area in plane framebuffer that changed
+	 * since last plane update) as an array of &drm_mode_rect in framebuffer
+	 * coodinates of the attached framebuffer. Note that unlike plane src,
+	 * damage clips are not in 16.16 fixed point.
+	 *
+	 * See drm_plane_get_damage_clips() and
+	 * drm_plane_get_damage_clips_count() for accessing these.
+	 */
+	struct drm_property_blob *fb_damage_clips;
+
+	/**
+	 * @src:
+	 *
+	 * source coordinates of the plane (in 16.16).
+	 *
+	 * When using drm_atomic_helper_check_plane_state(),
+	 * the coordinates are clipped, but the driver may choose
+	 * to use unclipped coordinates instead when the hardware
+	 * performs the clipping automatically.
+	 */
+	/**
+	 * @dst:
+	 *
+	 * clipped destination coordinates of the plane.
+	 *
+	 * When using drm_atomic_helper_check_plane_state(),
+	 * the coordinates are clipped, but the driver may choose
+	 * to use unclipped coordinates instead when the hardware
+	 * performs the clipping automatically.
+	 */
+	struct drm_rect src, dst;
+
+	/**
+	 * @visible:
+	 *
+	 * Visibility of the plane. This can be false even if fb!=NULL and
+	 * crtc!=NULL, due to clipping.
+	 */
+	bool visible;
+
+	/**
+	 * @scaling_filter:
+	 *
+	 * Scaling filter to be applied
+	 */
+	enum drm_scaling_filter scaling_filter;
+
+	/**
+	 * @commit: Tracks the pending commit to prevent use-after-free conditions,
+	 * and for async plane updates.
+	 *
+	 * May be NULL.
+	 */
+	struct drm_crtc_commit *commit;
+
+	/** @state: backpointer to global drm_atomic_state */
+	struct drm_atomic_state *state;
+};
+
+static inline struct drm_rect
+drm_plane_state_src(const struct drm_plane_state *state)
+{
+	struct drm_rect src = {
+		.x1 = state->src_x,
+		.y1 = state->src_y,
+		.x2 = state->src_x + state->src_w,
+		.y2 = state->src_y + state->src_h,
+	};
+	return src;
+}
+
+static inline struct drm_rect
+drm_plane_state_dest(const struct drm_plane_state *state)
+{
+	struct drm_rect dest = {
+		.x1 = state->crtc_x,
+		.y1 = state->crtc_y,
+		.x2 = state->crtc_x + state->crtc_w,
+		.y2 = state->crtc_y + state->crtc_h,
+	};
+	return dest;
+}
+
+/**
+ * struct drm_plane_funcs - driver plane control functions
+ */
+struct drm_plane_funcs {
+	/**
+	 * @update_plane:
+	 *
+	 * This is the legacy entry point to enable and configure the plane for
+	 * the given CRTC and framebuffer. It is never called to disable the
+	 * plane, i.e. the passed-in crtc and fb paramters are never NULL.
+	 *
+	 * The source rectangle in frame buffer memory coordinates is given by
+	 * the src_x, src_y, src_w and src_h parameters (as 16.16 fixed point
+	 * values). Devices that don't support subpixel plane coordinates can
+	 * ignore the fractional part.
+	 *
+	 * The destination rectangle in CRTC coordinates is given by the
+	 * crtc_x, crtc_y, crtc_w and crtc_h parameters (as integer values).
+	 * Devices scale the source rectangle to the destination rectangle. If
+	 * scaling is not supported, and the source rectangle size doesn't match
+	 * the destination rectangle size, the driver must return a
+	 * -<errorname>EINVAL</errorname> error.
+	 *
+	 * Drivers implementing atomic modeset should use
+	 * drm_atomic_helper_update_plane() to implement this hook.
+	 *
+	 * RETURNS:
+	 *
+	 * 0 on success or a negative error code on failure.
+	 */
+	int (*update_plane)(struct drm_plane *plane,
+			    struct drm_crtc *crtc, struct drm_framebuffer *fb,
+			    int crtc_x, int crtc_y,
+			    unsigned int crtc_w, unsigned int crtc_h,
+			    uint32_t src_x, uint32_t src_y,
+			    uint32_t src_w, uint32_t src_h,
+			    struct drm_modeset_acquire_ctx *ctx);
+
+	/**
+	 * @disable_plane:
+	 *
+	 * This is the legacy entry point to disable the plane. The DRM core
+	 * calls this method in response to a DRM_IOCTL_MODE_SETPLANE IOCTL call
+	 * with the frame buffer ID set to 0.  Disabled planes must not be
+	 * processed by the CRTC.
+	 *
+	 * Drivers implementing atomic modeset should use
+	 * drm_atomic_helper_disable_plane() to implement this hook.
+	 *
+	 * RETURNS:
+	 *
+	 * 0 on success or a negative error code on failure.
+	 */
+	int (*disable_plane)(struct drm_plane *plane,
+			     struct drm_modeset_acquire_ctx *ctx);
+
+	/**
+	 * @destroy:
+	 *
+	 * Clean up plane resources. This is only called at driver unload time
+	 * through drm_mode_config_cleanup() since a plane cannot be hotplugged
+	 * in DRM.
+	 */
+	void (*destroy)(struct drm_plane *plane);
+
+	/**
+	 * @reset:
+	 *
+	 * Reset plane hardware and software state to off. This function isn't
+	 * called by the core directly, only through drm_mode_config_reset().
+	 * It's not a helper hook only for historical reasons.
+	 *
+	 * Atomic drivers can use drm_atomic_helper_plane_reset() to reset
+	 * atomic state using this hook.
+	 */
+	void (*reset)(struct drm_plane *plane);
+
+	/**
+	 * @set_property:
+	 *
+	 * This is the legacy entry point to update a property attached to the
+	 * plane.
+	 *
+	 * This callback is optional if the driver does not support any legacy
+	 * driver-private properties. For atomic drivers it is not used because
+	 * property handling is done entirely in the DRM core.
+	 *
+	 * RETURNS:
+	 *
+	 * 0 on success or a negative error code on failure.
+	 */
+	int (*set_property)(struct drm_plane *plane,
+			    struct drm_property *property, uint64_t val);
+
+	/**
+	 * @atomic_duplicate_state:
+	 *
+	 * Duplicate the current atomic state for this plane and return it.
+	 * The core and helpers guarantee that any atomic state duplicated with
+	 * this hook and still owned by the caller (i.e. not transferred to the
+	 * driver by calling &drm_mode_config_funcs.atomic_commit) will be
+	 * cleaned up by calling the @atomic_destroy_state hook in this
+	 * structure.
+	 *
+	 * This callback is mandatory for atomic drivers.
+	 *
+	 * Atomic drivers which don't subclass &struct drm_plane_state should use
+	 * drm_atomic_helper_plane_duplicate_state(). Drivers that subclass the
+	 * state structure to extend it with driver-private state should use
+	 * __drm_atomic_helper_plane_duplicate_state() to make sure shared state is
+	 * duplicated in a consistent fashion across drivers.
+	 *
+	 * It is an error to call this hook before &drm_plane.state has been
+	 * initialized correctly.
+	 *
+	 * NOTE:
+	 *
+	 * If the duplicate state references refcounted resources this hook must
+	 * acquire a reference for each of them. The driver must release these
+	 * references again in @atomic_destroy_state.
+	 *
+	 * RETURNS:
+	 *
+	 * Duplicated atomic state or NULL when the allocation failed.
+	 */
+	struct drm_plane_state *(*atomic_duplicate_state)(struct drm_plane *plane);
+
+	/**
+	 * @atomic_destroy_state:
+	 *
+	 * Destroy a state duplicated with @atomic_duplicate_state and release
+	 * or unreference all resources it references
+	 *
+	 * This callback is mandatory for atomic drivers.
+	 */
+	void (*atomic_destroy_state)(struct drm_plane *plane,
+				     struct drm_plane_state *state);
+
+	/**
+	 * @atomic_set_property:
+	 *
+	 * Decode a driver-private property value and store the decoded value
+	 * into the passed-in state structure. Since the atomic core decodes all
+	 * standardized properties (even for extensions beyond the core set of
+	 * properties which might not be implemented by all drivers) this
+	 * requires drivers to subclass the state structure.
+	 *
+	 * Such driver-private properties should really only be implemented for
+	 * truly hardware/vendor specific state. Instead it is preferred to
+	 * standardize atomic extension and decode the properties used to expose
+	 * such an extension in the core.
+	 *
+	 * Do not call this function directly, use
+	 * drm_atomic_plane_set_property() instead.
+	 *
+	 * This callback is optional if the driver does not support any
+	 * driver-private atomic properties.
+	 *
+	 * NOTE:
+	 *
+	 * This function is called in the state assembly phase of atomic
+	 * modesets, which can be aborted for any reason (including on
+	 * userspace's request to just check whether a configuration would be
+	 * possible). Drivers MUST NOT touch any persistent state (hardware or
+	 * software) or data structures except the passed in @state parameter.
+	 *
+	 * Also since userspace controls in which order properties are set this
+	 * function must not do any input validation (since the state update is
+	 * incomplete and hence likely inconsistent). Instead any such input
+	 * validation must be done in the various atomic_check callbacks.
+	 *
+	 * RETURNS:
+	 *
+	 * 0 if the property has been found, -EINVAL if the property isn't
+	 * implemented by the driver (which shouldn't ever happen, the core only
+	 * asks for properties attached to this plane). No other validation is
+	 * allowed by the driver. The core already checks that the property
+	 * value is within the range (integer, valid enum value, ...) the driver
+	 * set when registering the property.
+	 */
+	int (*atomic_set_property)(struct drm_plane *plane,
+				   struct drm_plane_state *state,
+				   struct drm_property *property,
+				   uint64_t val);
+
+	/**
+	 * @atomic_get_property:
+	 *
+	 * Reads out the decoded driver-private property. This is used to
+	 * implement the GETPLANE IOCTL.
+	 *
+	 * Do not call this function directly, use
+	 * drm_atomic_plane_get_property() instead.
+	 *
+	 * This callback is optional if the driver does not support any
+	 * driver-private atomic properties.
+	 *
+	 * RETURNS:
+	 *
+	 * 0 on success, -EINVAL if the property isn't implemented by the
+	 * driver (which should never happen, the core only asks for
+	 * properties attached to this plane).
+	 */
+	int (*atomic_get_property)(struct drm_plane *plane,
+				   const struct drm_plane_state *state,
+				   struct drm_property *property,
+				   uint64_t *val);
+	/**
+	 * @late_register:
+	 *
+	 * This optional hook can be used to register additional userspace
+	 * interfaces attached to the plane like debugfs interfaces.
+	 * It is called late in the driver load sequence from drm_dev_register().
+	 * Everything added from this callback should be unregistered in
+	 * the early_unregister callback.
+	 *
+	 * Returns:
+	 *
+	 * 0 on success, or a negative error code on failure.
+	 */
+	int (*late_register)(struct drm_plane *plane);
+
+	/**
+	 * @early_unregister:
+	 *
+	 * This optional hook should be used to unregister the additional
+	 * userspace interfaces attached to the plane from
+	 * @late_register. It is called from drm_dev_unregister(),
+	 * early in the driver unload sequence to disable userspace access
+	 * before data structures are torndown.
+	 */
+	void (*early_unregister)(struct drm_plane *plane);
+
+	/**
+	 * @atomic_print_state:
+	 *
+	 * If driver subclasses &struct drm_plane_state, it should implement
+	 * this optional hook for printing additional driver specific state.
+	 *
+	 * Do not call this directly, use drm_atomic_plane_print_state()
+	 * instead.
+	 */
+	void (*atomic_print_state)(struct drm_printer *p,
+				   const struct drm_plane_state *state);
+
+	/**
+	 * @format_mod_supported:
+	 *
+	 * This optional hook is used for the DRM to determine if the given
+	 * format/modifier combination is valid for the plane. This allows the
+	 * DRM to generate the correct format bitmask (which formats apply to
+	 * which modifier), and to validate modifiers at atomic_check time.
+	 *
+	 * If not present, then any modifier in the plane's modifier
+	 * list is allowed with any of the plane's formats.
+	 *
+	 * Returns:
+	 *
+	 * True if the given modifier is valid for that format on the plane.
+	 * False otherwise.
+	 */
+	bool (*format_mod_supported)(struct drm_plane *plane, uint32_t format,
+				     uint64_t modifier);
+};
+
+/**
+ * enum drm_plane_type - uapi plane type enumeration
+ *
+ * For historical reasons not all planes are made the same. This enumeration is
+ * used to tell the different types of planes apart to implement the different
+ * uapi semantics for them. For userspace which is universal plane aware and
+ * which is using that atomic IOCTL there's no difference between these planes
+ * (beyong what the driver and hardware can support of course).
+ *
+ * For compatibility with legacy userspace, only overlay planes are made
+ * available to userspace by default. Userspace clients may set the
+ * &DRM_CLIENT_CAP_UNIVERSAL_PLANES client capability bit to indicate that they
+ * wish to receive a universal plane list containing all plane types. See also
+ * drm_for_each_legacy_plane().
+ *
+ * In addition to setting each plane's type, drivers need to setup the
+ * &drm_crtc.primary and optionally &drm_crtc.cursor pointers for legacy
+ * IOCTLs. See drm_crtc_init_with_planes().
+ *
+ * WARNING: The values of this enum is UABI since they're exposed in the "type"
+ * property.
+ */
+enum drm_plane_type {
+	/**
+	 * @DRM_PLANE_TYPE_OVERLAY:
+	 *
+	 * Overlay planes represent all non-primary, non-cursor planes. Some
+	 * drivers refer to these types of planes as "sprites" internally.
+	 */
+	DRM_PLANE_TYPE_OVERLAY,
+
+	/**
+	 * @DRM_PLANE_TYPE_PRIMARY:
+	 *
+	 * A primary plane attached to a CRTC is the most likely to be able to
+	 * light up the CRTC when no scaling/cropping is used and the plane
+	 * covers the whole CRTC.
+	 */
+	DRM_PLANE_TYPE_PRIMARY,
+
+	/**
+	 * @DRM_PLANE_TYPE_CURSOR:
+	 *
+	 * A cursor plane attached to a CRTC is more likely to be able to be
+	 * enabled when no scaling/cropping is used and the framebuffer has the
+	 * size indicated by &drm_mode_config.cursor_width and
+	 * &drm_mode_config.cursor_height. Additionally, if the driver doesn't
+	 * support modifiers, the framebuffer should have a linear layout.
+	 */
+	DRM_PLANE_TYPE_CURSOR,
+};
+
+
+/**
+ * struct drm_plane - central DRM plane control structure
+ *
+ * Planes represent the scanout hardware of a display block. They receive their
+ * input data from a &drm_framebuffer and feed it to a &drm_crtc. Planes control
+ * the color conversion, see `Plane Composition Properties`_ for more details,
+ * and are also involved in the color conversion of input pixels, see `Color
+ * Management Properties`_ for details on that.
+ */
+struct drm_plane {
+	/** @dev: DRM device this plane belongs to */
+	struct drm_device *dev;
+
+	/**
+	 * @head:
+	 *
+	 * List of all planes on @dev, linked from &drm_mode_config.plane_list.
+	 * Invariant over the lifetime of @dev and therefore does not need
+	 * locking.
+	 */
+	struct list_head head;
+
+	/** @name: human readable name, can be overwritten by the driver */
+	char *name;
+
+	/**
+	 * @mutex:
+	 *
+	 * Protects modeset plane state, together with the &drm_crtc.mutex of
+	 * CRTC this plane is linked to (when active, getting activated or
+	 * getting disabled).
+	 *
+	 * For atomic drivers specifically this protects @state.
+	 */
+	struct drm_modeset_lock mutex;
+
+	/** @base: base mode object */
+	struct drm_mode_object base;
+
+	/**
+	 * @possible_crtcs: pipes this plane can be bound to constructed from
+	 * drm_crtc_mask()
+	 */
+	uint32_t possible_crtcs;
+	/** @format_types: array of formats supported by this plane */
+	uint32_t *format_types;
+	/** @format_count: Size of the array pointed at by @format_types. */
+	unsigned int format_count;
+	/**
+	 * @format_default: driver hasn't supplied supported formats for the
+	 * plane. Used by the non-atomic driver compatibility wrapper only.
+	 */
+	bool format_default;
+
+	/** @modifiers: array of modifiers supported by this plane */
+	uint64_t *modifiers;
+	/** @modifier_count: Size of the array pointed at by @modifier_count. */
+	unsigned int modifier_count;
+
+	/**
+	 * @crtc:
+	 *
+	 * Currently bound CRTC, only meaningful for non-atomic drivers. For
+	 * atomic drivers this is forced to be NULL, atomic drivers should
+	 * instead check &drm_plane_state.crtc.
+	 */
+	struct drm_crtc *crtc;
+
+	/**
+	 * @fb:
+	 *
+	 * Currently bound framebuffer, only meaningful for non-atomic drivers.
+	 * For atomic drivers this is forced to be NULL, atomic drivers should
+	 * instead check &drm_plane_state.fb.
+	 */
+	struct drm_framebuffer *fb;
+
+	/**
+	 * @old_fb:
+	 *
+	 * Temporary tracking of the old fb while a modeset is ongoing. Only
+	 * used by non-atomic drivers, forced to be NULL for atomic drivers.
+	 */
+	struct drm_framebuffer *old_fb;
+
+	/** @funcs: plane control functions */
+	const struct drm_plane_funcs *funcs;
+
+	/** @properties: property tracking for this plane */
+	struct drm_object_properties properties;
+
+	/** @type: Type of plane, see &enum drm_plane_type for details. */
+	enum drm_plane_type type;
+
+	/**
+	 * @index: Position inside the mode_config.list, can be used as an array
+	 * index. It is invariant over the lifetime of the plane.
+	 */
+	unsigned index;
+
+	/** @helper_private: mid-layer private data */
+	const struct drm_plane_helper_funcs *helper_private;
+
+	/**
+	 * @state:
+	 *
+	 * Current atomic state for this plane.
+	 *
+	 * This is protected by @mutex. Note that nonblocking atomic commits
+	 * access the current plane state without taking locks. Either by going
+	 * through the &struct drm_atomic_state pointers, see
+	 * for_each_oldnew_plane_in_state(), for_each_old_plane_in_state() and
+	 * for_each_new_plane_in_state(). Or through careful ordering of atomic
+	 * commit operations as implemented in the atomic helpers, see
+	 * &struct drm_crtc_commit.
+	 */
+	struct drm_plane_state *state;
+
+	/**
+	 * @alpha_property:
+	 * Optional alpha property for this plane. See
+	 * drm_plane_create_alpha_property().
+	 */
+	struct drm_property *alpha_property;
+	/**
+	 * @zpos_property:
+	 * Optional zpos property for this plane. See
+	 * drm_plane_create_zpos_property().
+	 */
+	struct drm_property *zpos_property;
+	/**
+	 * @rotation_property:
+	 * Optional rotation property for this plane. See
+	 * drm_plane_create_rotation_property().
+	 */
+	struct drm_property *rotation_property;
+	/**
+	 * @blend_mode_property:
+	 * Optional "pixel blend mode" enum property for this plane.
+	 * Blend mode property represents the alpha blending equation selection,
+	 * describing how the pixels from the current plane are composited with
+	 * the background.
+	 */
+	struct drm_property *blend_mode_property;
+
+	/**
+	 * @color_encoding_property:
+	 *
+	 * Optional "COLOR_ENCODING" enum property for specifying
+	 * color encoding for non RGB formats.
+	 * See drm_plane_create_color_properties().
+	 */
+	struct drm_property *color_encoding_property;
+	/**
+	 * @color_range_property:
+	 *
+	 * Optional "COLOR_RANGE" enum property for specifying
+	 * color range for non RGB formats.
+	 * See drm_plane_create_color_properties().
+	 */
+	struct drm_property *color_range_property;
+
+	/**
+	 * @scaling_filter_property: property to apply a particular filter while
+	 * scaling.
+	 */
+	struct drm_property *scaling_filter_property;
+};
+
+#define obj_to_plane(x) container_of(x, struct drm_plane, base)
+
+__printf(9, 10)
+int drm_universal_plane_init(struct drm_device *dev,
+			     struct drm_plane *plane,
+			     uint32_t possible_crtcs,
+			     const struct drm_plane_funcs *funcs,
+			     const uint32_t *formats,
+			     unsigned int format_count,
+			     const uint64_t *format_modifiers,
+			     enum drm_plane_type type,
+			     const char *name, ...);
+void drm_plane_cleanup(struct drm_plane *plane);
+
+__printf(10, 11)
+void *__drmm_universal_plane_alloc(struct drm_device *dev,
+				   size_t size, size_t offset,
+				   uint32_t possible_crtcs,
+				   const struct drm_plane_funcs *funcs,
+				   const uint32_t *formats,
+				   unsigned int format_count,
+				   const uint64_t *format_modifiers,
+				   enum drm_plane_type plane_type,
+				   const char *name, ...);
+
+/**
+ * drmm_universal_plane_alloc - Allocate and initialize an universal plane object
+ * @dev: DRM device
+ * @type: the type of the struct which contains struct &drm_plane
+ * @member: the name of the &drm_plane within @type
+ * @possible_crtcs: bitmask of possible CRTCs
+ * @funcs: callbacks for the new plane
+ * @formats: array of supported formats (DRM_FORMAT\_\*)
+ * @format_count: number of elements in @formats
+ * @format_modifiers: array of struct drm_format modifiers terminated by
+ *                    DRM_FORMAT_MOD_INVALID
+ * @plane_type: type of plane (overlay, primary, cursor)
+ * @name: printf style format string for the plane name, or NULL for default name
+ *
+ * Allocates and initializes a plane object of type @type. Cleanup is
+ * automatically handled through registering drm_plane_cleanup() with
+ * drmm_add_action().
+ *
+ * The @drm_plane_funcs.destroy hook must be NULL.
+ *
+ * Drivers that only support the DRM_FORMAT_MOD_LINEAR modifier support may set
+ * @format_modifiers to NULL. The plane will advertise the linear modifier.
+ *
+ * Returns:
+ * Pointer to new plane, or ERR_PTR on failure.
+ */
+#define drmm_universal_plane_alloc(dev, type, member, possible_crtcs, funcs, formats, \
+				   format_count, format_modifiers, plane_type, name, ...) \
+	((type *)__drmm_universal_plane_alloc(dev, sizeof(type), \
+					      offsetof(type, member), \
+					      possible_crtcs, funcs, formats, \
+					      format_count, format_modifiers, \
+					      plane_type, name, ##__VA_ARGS__))
+
+__printf(10, 11)
+void *__drm_universal_plane_alloc(struct drm_device *dev,
+				  size_t size, size_t offset,
+				  uint32_t possible_crtcs,
+				  const struct drm_plane_funcs *funcs,
+				  const uint32_t *formats,
+				  unsigned int format_count,
+				  const uint64_t *format_modifiers,
+				  enum drm_plane_type plane_type,
+				  const char *name, ...);
+
+/**
+ * drm_universal_plane_alloc() - Allocate and initialize an universal plane object
+ * @dev: DRM device
+ * @type: the type of the struct which contains struct &drm_plane
+ * @member: the name of the &drm_plane within @type
+ * @possible_crtcs: bitmask of possible CRTCs
+ * @funcs: callbacks for the new plane
+ * @formats: array of supported formats (DRM_FORMAT\_\*)
+ * @format_count: number of elements in @formats
+ * @format_modifiers: array of struct drm_format modifiers terminated by
+ *                    DRM_FORMAT_MOD_INVALID
+ * @plane_type: type of plane (overlay, primary, cursor)
+ * @name: printf style format string for the plane name, or NULL for default name
+ *
+ * Allocates and initializes a plane object of type @type. The caller
+ * is responsible for releasing the allocated memory with kfree().
+ *
+ * Drivers are encouraged to use drmm_universal_plane_alloc() instead.
+ *
+ * Drivers that only support the DRM_FORMAT_MOD_LINEAR modifier support may set
+ * @format_modifiers to NULL. The plane will advertise the linear modifier.
+ *
+ * Returns:
+ * Pointer to new plane, or ERR_PTR on failure.
+ */
+#define drm_universal_plane_alloc(dev, type, member, possible_crtcs, funcs, formats, \
+				   format_count, format_modifiers, plane_type, name, ...) \
+	((type *)__drm_universal_plane_alloc(dev, sizeof(type), \
+					     offsetof(type, member), \
+					     possible_crtcs, funcs, formats, \
+					     format_count, format_modifiers, \
+					     plane_type, name, ##__VA_ARGS__))
+
+/**
+ * drm_plane_index - find the index of a registered plane
+ * @plane: plane to find index for
+ *
+ * Given a registered plane, return the index of that plane within a DRM
+ * device's list of planes.
+ */
+static inline unsigned int drm_plane_index(const struct drm_plane *plane)
+{
+	return plane->index;
+}
+
+/**
+ * drm_plane_mask - find the mask of a registered plane
+ * @plane: plane to find mask for
+ */
+static inline u32 drm_plane_mask(const struct drm_plane *plane)
+{
+	return 1 << drm_plane_index(plane);
+}
+
+struct drm_plane * drm_plane_from_index(struct drm_device *dev, int idx);
+void drm_plane_force_disable(struct drm_plane *plane);
+
+int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
+				       struct drm_property *property,
+				       uint64_t value);
+
+/**
+ * drm_plane_find - find a &drm_plane
+ * @dev: DRM device
+ * @file_priv: drm file to check for lease against.
+ * @id: plane id
+ *
+ * Returns the plane with @id, NULL if it doesn't exist. Simple wrapper around
+ * drm_mode_object_find().
+ */
+static inline struct drm_plane *drm_plane_find(struct drm_device *dev,
+		struct drm_file *file_priv,
+		uint32_t id)
+{
+	struct drm_mode_object *mo;
+	mo = drm_mode_object_find(dev, file_priv, id, DRM_MODE_OBJECT_PLANE);
+	return mo ? obj_to_plane(mo) : NULL;
+}
+
+/**
+ * drm_for_each_plane_mask - iterate over planes specified by bitmask
+ * @plane: the loop cursor
+ * @dev: the DRM device
+ * @plane_mask: bitmask of plane indices
+ *
+ * Iterate over all planes specified by bitmask.
+ */
+#define drm_for_each_plane_mask(plane, dev, plane_mask) \
+	list_for_each_entry((plane), &(dev)->mode_config.plane_list, head) \
+		for_each_if ((plane_mask) & drm_plane_mask(plane))
+
+/**
+ * drm_for_each_legacy_plane - iterate over all planes for legacy userspace
+ * @plane: the loop cursor
+ * @dev: the DRM device
+ *
+ * Iterate over all legacy planes of @dev, excluding primary and cursor planes.
+ * This is useful for implementing userspace apis when userspace is not
+ * universal plane aware. See also &enum drm_plane_type.
+ */
+#define drm_for_each_legacy_plane(plane, dev) \
+	list_for_each_entry(plane, &(dev)->mode_config.plane_list, head) \
+		for_each_if (plane->type == DRM_PLANE_TYPE_OVERLAY)
+
+/**
+ * drm_for_each_plane - iterate over all planes
+ * @plane: the loop cursor
+ * @dev: the DRM device
+ *
+ * Iterate over all planes of @dev, include primary and cursor planes.
+ */
+#define drm_for_each_plane(plane, dev) \
+	list_for_each_entry(plane, &(dev)->mode_config.plane_list, head)
+
+bool drm_any_plane_has_format(struct drm_device *dev,
+			      u32 format, u64 modifier);
+
+void drm_plane_enable_fb_damage_clips(struct drm_plane *plane);
+unsigned int
+drm_plane_get_damage_clips_count(const struct drm_plane_state *state);
+struct drm_mode_rect *
+drm_plane_get_damage_clips(const struct drm_plane_state *state);
+
+int drm_plane_create_scaling_filter_property(struct drm_plane *plane,
+					     unsigned int supported_filters);
+
+#endif