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, 584 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h
new file mode 100644
index 000000000..2e18bcf6b
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dc_link.h
@@ -0,0 +1,584 @@
+/*
+ * Copyright 2012-14 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#ifndef DC_LINK_H_
+#define DC_LINK_H_
+
+#include "dc.h"
+#include "dc_types.h"
+#include "grph_object_defs.h"
+
+struct link_resource;
+
+enum dc_link_fec_state {
+	dc_link_fec_not_ready,
+	dc_link_fec_ready,
+	dc_link_fec_enabled
+};
+
+struct dc_link_status {
+	bool link_active;
+	struct dpcd_caps *dpcd_caps;
+};
+
+struct dprx_states {
+	bool cable_id_written;
+};
+
+/* DP MST stream allocation (payload bandwidth number) */
+struct link_mst_stream_allocation {
+	/* DIG front */
+	const struct stream_encoder *stream_enc;
+	/* HPO DP Stream Encoder */
+	const struct hpo_dp_stream_encoder *hpo_dp_stream_enc;
+	/* associate DRM payload table with DC stream encoder */
+	uint8_t vcp_id;
+	/* number of slots required for the DP stream in transport packet */
+	uint8_t slot_count;
+};
+
+/* DP MST stream allocation table */
+struct link_mst_stream_allocation_table {
+	/* number of DP video streams */
+	int stream_count;
+	/* array of stream allocations */
+	struct link_mst_stream_allocation stream_allocations[MAX_CONTROLLER_NUM];
+};
+
+struct edp_trace_power_timestamps {
+	uint64_t poweroff;
+	uint64_t poweron;
+};
+
+struct dp_trace_lt_counts {
+	unsigned int total;
+	unsigned int fail;
+};
+
+struct dp_trace_lt {
+	struct dp_trace_lt_counts counts;
+	struct dp_trace_timestamps {
+		unsigned long long start;
+		unsigned long long end;
+	} timestamps;
+	enum link_training_result result;
+	bool is_logged;
+};
+
+struct dp_trace {
+	struct dp_trace_lt detect_lt_trace;
+	struct dp_trace_lt commit_lt_trace;
+	unsigned int link_loss_count;
+	bool is_initialized;
+	struct edp_trace_power_timestamps edp_trace_power_timestamps;
+};
+
+/* PSR feature flags */
+struct psr_settings {
+	bool psr_feature_enabled;		// PSR is supported by sink
+	bool psr_allow_active;			// PSR is currently active
+	enum dc_psr_version psr_version;		// Internal PSR version, determined based on DPCD
+	bool psr_vtotal_control_support;	// Vtotal control is supported by sink
+
+	/* These parameters are calculated in Driver,
+	 * based on display timing and Sink capabilities.
+	 * If VBLANK region is too small and Sink takes a long time
+	 * to set up RFB, it may take an extra frame to enter PSR state.
+	 */
+	bool psr_frame_capture_indication_req;
+	unsigned int psr_sdp_transmit_line_num_deadline;
+	uint8_t force_ffu_mode;
+	unsigned int psr_power_opt;
+};
+
+/* To split out "global" and "per-panel" config settings.
+ * Add a struct dc_panel_config under dc_link
+ */
+struct dc_panel_config {
+	/* extra panel power sequence parameters */
+	struct pps {
+		unsigned int extra_t3_ms;
+		unsigned int extra_t7_ms;
+		unsigned int extra_delay_backlight_off;
+		unsigned int extra_post_t7_ms;
+		unsigned int extra_pre_t11_ms;
+		unsigned int extra_t12_ms;
+		unsigned int extra_post_OUI_ms;
+	} pps;
+	/* PSR */
+	struct psr {
+		bool disable_psr;
+		bool disallow_psrsu;
+		bool rc_disable;
+		bool rc_allow_static_screen;
+		bool rc_allow_fullscreen_VPB;
+	} psr;
+	/* ABM */
+	struct varib {
+		unsigned int varibright_feature_enable;
+		unsigned int def_varibright_level;
+		unsigned int abm_config_setting;
+	} varib;
+	/* edp DSC */
+	struct dsc {
+		bool disable_dsc_edp;
+		unsigned int force_dsc_edp_policy;
+	} dsc;
+	/* eDP ILR */
+	struct ilr {
+		bool optimize_edp_link_rate; /* eDP ILR */
+	} ilr;
+};
+
+/*
+ *  USB4 DPIA BW ALLOCATION STRUCTS
+ */
+struct dc_dpia_bw_alloc {
+	int sink_verified_bw;  // The Verified BW that sink can allocated and use that has been verified already
+	int sink_allocated_bw; // The Actual Allocated BW that sink currently allocated
+	int padding_bw;        // The Padding "Un-used" BW allocated by CM for padding reasons
+	int sink_max_bw;       // The Max BW that sink can require/support
+	int estimated_bw;      // The estimated available BW for this DPIA
+	int bw_granularity;    // BW Granularity
+	bool bw_alloc_enabled; // The BW Alloc Mode Support is turned ON for all 3:  DP-Tx & Dpia & CM
+};
+
+/*
+ * A link contains one or more sinks and their connected status.
+ * The currently active signal type (HDMI, DP-SST, DP-MST) is also reported.
+ */
+struct dc_link {
+	struct dc_sink *remote_sinks[MAX_SINKS_PER_LINK];
+	unsigned int sink_count;
+	struct dc_sink *local_sink;
+	unsigned int link_index;
+	enum dc_connection_type type;
+	enum signal_type connector_signal;
+	enum dc_irq_source irq_source_hpd;
+	enum dc_irq_source irq_source_hpd_rx;/* aka DP Short Pulse  */
+	bool is_hpd_filter_disabled;
+	bool dp_ss_off;
+
+	/**
+	 * @link_state_valid:
+	 *
+	 * If there is no link and local sink, this variable should be set to
+	 * false. Otherwise, it should be set to true; usually, the function
+	 * core_link_enable_stream sets this field to true.
+	 */
+	bool link_state_valid;
+	bool aux_access_disabled;
+	bool sync_lt_in_progress;
+	bool is_internal_display;
+
+	/* TODO: Rename. Flag an endpoint as having a programmable mapping to a
+	 * DIG encoder. */
+	bool is_dig_mapping_flexible;
+	bool hpd_status; /* HPD status of link without physical HPD pin. */
+	bool is_hpd_pending; /* Indicates a new received hpd */
+	bool is_automated; /* Indicates automated testing */
+
+	bool edp_sink_present;
+
+	struct dp_trace dp_trace;
+
+	/* caps is the same as reported_link_cap. link_traing use
+	 * reported_link_cap. Will clean up.  TODO
+	 */
+	struct dc_link_settings reported_link_cap;
+	struct dc_link_settings verified_link_cap;
+	struct dc_link_settings cur_link_settings;
+	struct dc_lane_settings cur_lane_setting[LANE_COUNT_DP_MAX];
+	struct dc_link_settings preferred_link_setting;
+	/* preferred_training_settings are override values that
+	 * come from DM. DM is responsible for the memory
+	 * management of the override pointers.
+	 */
+	struct dc_link_training_overrides preferred_training_settings;
+	struct dp_audio_test_data audio_test_data;
+
+	uint8_t ddc_hw_inst;
+
+	uint8_t hpd_src;
+
+	uint8_t link_enc_hw_inst;
+	/* DIG link encoder ID. Used as index in link encoder resource pool.
+	 * For links with fixed mapping to DIG, this is not changed after dc_link
+	 * object creation.
+	 */
+	enum engine_id eng_id;
+
+	bool test_pattern_enabled;
+	union compliance_test_state compliance_test_state;
+
+	void *priv;
+
+	struct ddc_service *ddc;
+
+	bool aux_mode;
+
+	/* Private to DC core */
+
+	const struct dc *dc;
+
+	struct dc_context *ctx;
+
+	struct panel_cntl *panel_cntl;
+	struct link_encoder *link_enc;
+	struct graphics_object_id link_id;
+	/* Endpoint type distinguishes display endpoints which do not have entries
+	 * in the BIOS connector table from those that do. Helps when tracking link
+	 * encoder to display endpoint assignments.
+	 */
+	enum display_endpoint_type ep_type;
+	union ddi_channel_mapping ddi_channel_mapping;
+	struct connector_device_tag_info device_tag;
+	struct dpcd_caps dpcd_caps;
+	uint32_t dongle_max_pix_clk;
+	unsigned short chip_caps;
+	unsigned int dpcd_sink_count;
+#if defined(CONFIG_DRM_AMD_DC_HDCP)
+	struct hdcp_caps hdcp_caps;
+#endif
+	enum edp_revision edp_revision;
+	union dpcd_sink_ext_caps dpcd_sink_ext_caps;
+
+	struct psr_settings psr_settings;
+
+	/* Drive settings read from integrated info table */
+	struct dc_lane_settings bios_forced_drive_settings;
+
+	/* Vendor specific LTTPR workaround variables */
+	uint8_t vendor_specific_lttpr_link_rate_wa;
+	bool apply_vendor_specific_lttpr_link_rate_wa;
+
+	/* MST record stream using this link */
+	struct link_flags {
+		bool dp_keep_receiver_powered;
+		bool dp_skip_DID2;
+		bool dp_skip_reset_segment;
+		bool dp_mot_reset_segment;
+		/* Some USB4 docks do not handle turning off MST DSC once it has been enabled. */
+		bool dpia_mst_dsc_always_on;
+		/* Forced DPIA into TBT3 compatibility mode. */
+		bool dpia_forced_tbt3_mode;
+		bool dongle_mode_timing_override;
+	} wa_flags;
+	struct link_mst_stream_allocation_table mst_stream_alloc_table;
+
+	struct dc_link_status link_status;
+	struct dprx_states dprx_states;
+
+	struct gpio *hpd_gpio;
+	enum dc_link_fec_state fec_state;
+	struct dc_panel_config panel_config;
+	struct phy_state phy_state;
+};
+
+const struct dc_link_status *dc_link_get_status(const struct dc_link *dc_link);
+
+/**
+ * dc_get_link_at_index() - Return an enumerated dc_link.
+ *
+ * dc_link order is constant and determined at
+ * boot time.  They cannot be created or destroyed.
+ * Use dc_get_caps() to get number of links.
+ */
+static inline struct dc_link *dc_get_link_at_index(struct dc *dc, uint32_t link_index)
+{
+	return dc->links[link_index];
+}
+
+static inline void get_edp_links(const struct dc *dc,
+		struct dc_link **edp_links,
+		int *edp_num)
+{
+	int i;
+
+	*edp_num = 0;
+	for (i = 0; i < dc->link_count; i++) {
+		// report any eDP links, even unconnected DDI's
+		if (!dc->links[i])
+			continue;
+		if (dc->links[i]->connector_signal == SIGNAL_TYPE_EDP) {
+			edp_links[*edp_num] = dc->links[i];
+			if (++(*edp_num) == MAX_NUM_EDP)
+				return;
+		}
+	}
+}
+
+static inline bool dc_get_edp_link_panel_inst(const struct dc *dc,
+		const struct dc_link *link,
+		unsigned int *inst_out)
+{
+	struct dc_link *edp_links[MAX_NUM_EDP];
+	int edp_num;
+
+	if (link->connector_signal != SIGNAL_TYPE_EDP)
+		return false;
+	get_edp_links(dc, edp_links, &edp_num);
+	if ((edp_num > 1) && (link->link_index > edp_links[0]->link_index))
+		*inst_out = 1;
+	else
+		*inst_out = 0;
+	return true;
+}
+
+/* Set backlight level of an embedded panel (eDP, LVDS).
+ * backlight_pwm_u16_16 is unsigned 32 bit with 16 bit integer
+ * and 16 bit fractional, where 1.0 is max backlight value.
+ */
+bool dc_link_set_backlight_level(const struct dc_link *dc_link,
+		uint32_t backlight_pwm_u16_16,
+		uint32_t frame_ramp);
+
+/* Set/get nits-based backlight level of an embedded panel (eDP, LVDS). */
+bool dc_link_set_backlight_level_nits(struct dc_link *link,
+		bool isHDR,
+		uint32_t backlight_millinits,
+		uint32_t transition_time_in_ms);
+
+bool dc_link_get_backlight_level_nits(struct dc_link *link,
+		uint32_t *backlight_millinits,
+		uint32_t *backlight_millinits_peak);
+
+bool dc_link_backlight_enable_aux(struct dc_link *link, bool enable);
+
+bool dc_link_read_default_bl_aux(struct dc_link *link, uint32_t *backlight_millinits);
+bool dc_link_set_default_brightness_aux(struct dc_link *link);
+
+int dc_link_get_backlight_level(const struct dc_link *dc_link);
+
+int dc_link_get_target_backlight_pwm(const struct dc_link *link);
+
+bool dc_link_set_psr_allow_active(struct dc_link *dc_link, const bool *enable,
+		bool wait, bool force_static, const unsigned int *power_opts);
+
+bool dc_link_get_psr_state(const struct dc_link *dc_link, enum dc_psr_state *state);
+
+bool dc_link_setup_psr(struct dc_link *dc_link,
+		const struct dc_stream_state *stream, struct psr_config *psr_config,
+		struct psr_context *psr_context);
+
+bool dc_power_alpm_dpcd_enable(struct dc_link *link, bool enable);
+
+void dc_link_get_psr_residency(const struct dc_link *link, uint32_t *residency);
+
+void dc_link_blank_all_dp_displays(struct dc *dc);
+void dc_link_blank_all_edp_displays(struct dc *dc);
+
+void dc_link_blank_dp_stream(struct dc_link *link, bool hw_init);
+bool dc_link_set_sink_vtotal_in_psr_active(const struct dc_link *link,
+		uint16_t psr_vtotal_idle, uint16_t psr_vtotal_su);
+
+/* Request DC to detect if there is a Panel connected.
+ * boot - If this call is during initial boot.
+ * Return false for any type of detection failure or MST detection
+ * true otherwise. True meaning further action is required (status update
+ * and OS notification).
+ */
+enum dc_detect_reason {
+	DETECT_REASON_BOOT,
+	DETECT_REASON_RESUMEFROMS3S4,
+	DETECT_REASON_HPD,
+	DETECT_REASON_HPDRX,
+	DETECT_REASON_FALLBACK,
+	DETECT_REASON_RETRAIN,
+	DETECT_REASON_TDR,
+};
+
+bool dc_link_detect(struct dc_link *dc_link, enum dc_detect_reason reason);
+bool dc_link_get_hpd_state(struct dc_link *dc_link);
+enum dc_status dc_link_allocate_mst_payload(struct pipe_ctx *pipe_ctx);
+enum dc_status dc_link_reduce_mst_payload(struct pipe_ctx *pipe_ctx, uint32_t req_pbn);
+enum dc_status dc_link_increase_mst_payload(struct pipe_ctx *pipe_ctx, uint32_t req_pbn);
+
+/* Notify DC about DP RX Interrupt (aka Short Pulse Interrupt).
+ * Return:
+ * true - Downstream port status changed. DM should call DC to do the
+ * detection.
+ * false - no change in Downstream port status. No further action required
+ * from DM. */
+bool dc_link_handle_hpd_rx_irq(struct dc_link *dc_link,
+		union hpd_irq_data *hpd_irq_dpcd_data, bool *out_link_loss,
+		bool defer_handling, bool *has_left_work);
+
+/*
+ * On eDP links this function call will stall until T12 has elapsed.
+ * If the panel is not in power off state, this function will return
+ * immediately.
+ */
+bool dc_link_wait_for_t12(struct dc_link *link);
+
+void dc_link_dp_handle_automated_test(struct dc_link *link);
+void dc_link_dp_handle_link_loss(struct dc_link *link);
+bool dc_link_dp_allow_hpd_rx_irq(const struct dc_link *link);
+
+struct dc_sink_init_data;
+
+struct dc_sink *dc_link_add_remote_sink(
+		struct dc_link *dc_link,
+		const uint8_t *edid,
+		int len,
+		struct dc_sink_init_data *init_data);
+
+void dc_link_remove_remote_sink(
+	struct dc_link *link,
+	struct dc_sink *sink);
+
+/* Used by diagnostics for virtual link at the moment */
+
+void dc_link_dp_set_drive_settings(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	struct link_training_settings *lt_settings);
+
+bool dc_link_dp_perform_link_training_skip_aux(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	const struct dc_link_settings *link_setting);
+
+enum link_training_result dc_link_dp_perform_link_training(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	const struct dc_link_settings *link_settings,
+	bool skip_video_pattern);
+
+bool dc_link_dp_sync_lt_begin(struct dc_link *link);
+
+enum link_training_result dc_link_dp_sync_lt_attempt(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	struct dc_link_settings *link_setting,
+	struct dc_link_training_overrides *lt_settings);
+
+bool dc_link_dp_sync_lt_end(struct dc_link *link, bool link_down);
+
+void dc_link_dp_enable_hpd(const struct dc_link *link);
+
+void dc_link_dp_disable_hpd(const struct dc_link *link);
+
+bool dc_link_dp_set_test_pattern(
+	struct dc_link *link,
+	enum dp_test_pattern test_pattern,
+	enum dp_test_pattern_color_space test_pattern_color_space,
+	const struct link_training_settings *p_link_settings,
+	const unsigned char *p_custom_pattern,
+	unsigned int cust_pattern_size);
+
+bool dc_link_dp_get_max_link_enc_cap(const struct dc_link *link, struct dc_link_settings *max_link_enc_cap);
+
+void dc_link_enable_hpd_filter(struct dc_link *link, bool enable);
+
+bool dc_link_is_dp_sink_present(struct dc_link *link);
+
+bool dc_link_detect_sink(struct dc_link *link, enum dc_connection_type *type);
+/*
+ * DPCD access interfaces
+ */
+
+#ifdef CONFIG_DRM_AMD_DC_HDCP
+bool dc_link_is_hdcp14(struct dc_link *link, enum signal_type signal);
+bool dc_link_is_hdcp22(struct dc_link *link, enum signal_type signal);
+#endif
+void dc_link_set_drive_settings(struct dc *dc,
+				struct link_training_settings *lt_settings,
+				const struct dc_link *link);
+void dc_link_set_preferred_link_settings(struct dc *dc,
+					 struct dc_link_settings *link_setting,
+					 struct dc_link *link);
+void dc_link_set_preferred_training_settings(struct dc *dc,
+					struct dc_link_settings *link_setting,
+					struct dc_link_training_overrides *lt_overrides,
+					struct dc_link *link,
+					bool skip_immediate_retrain);
+void dc_link_enable_hpd(const struct dc_link *link);
+void dc_link_disable_hpd(const struct dc_link *link);
+void dc_link_set_test_pattern(struct dc_link *link,
+			enum dp_test_pattern test_pattern,
+			enum dp_test_pattern_color_space test_pattern_color_space,
+			const struct link_training_settings *p_link_settings,
+			const unsigned char *p_custom_pattern,
+			unsigned int cust_pattern_size);
+uint32_t dc_link_bandwidth_kbps(
+	const struct dc_link *link,
+	const struct dc_link_settings *link_setting);
+
+const struct dc_link_settings *dc_link_get_link_cap(
+		const struct dc_link *link);
+
+void dc_link_overwrite_extended_receiver_cap(
+		struct dc_link *link);
+
+bool dc_is_oem_i2c_device_present(
+	struct dc *dc,
+	size_t slave_address
+);
+
+bool dc_submit_i2c(
+		struct dc *dc,
+		uint32_t link_index,
+		struct i2c_command *cmd);
+
+bool dc_submit_i2c_oem(
+		struct dc *dc,
+		struct i2c_command *cmd);
+
+uint32_t dc_bandwidth_in_kbps_from_timing(
+	const struct dc_crtc_timing *timing);
+
+bool dc_link_is_fec_supported(const struct dc_link *link);
+bool dc_link_should_enable_fec(const struct dc_link *link);
+
+uint32_t dc_link_bw_kbps_from_raw_frl_link_rate_data(uint8_t bw);
+enum dp_link_encoding dc_link_dp_mst_decide_link_encoding_format(const struct dc_link *link);
+
+void dc_link_get_cur_link_res(const struct dc_link *link,
+		struct link_resource *link_res);
+/* take a snapshot of current link resource allocation state */
+void dc_get_cur_link_res_map(const struct dc *dc, uint32_t *map);
+/* restore link resource allocation state from a snapshot */
+void dc_restore_link_res_map(const struct dc *dc, uint32_t *map);
+void dc_link_clear_dprx_states(struct dc_link *link);
+struct gpio *get_hpd_gpio(struct dc_bios *dcb,
+		struct graphics_object_id link_id,
+		struct gpio_service *gpio_service);
+void dp_trace_reset(struct dc_link *link);
+bool dc_dp_trace_is_initialized(struct dc_link *link);
+unsigned long long dc_dp_trace_get_lt_end_timestamp(struct dc_link *link,
+		bool in_detection);
+void dc_dp_trace_set_is_logged_flag(struct dc_link *link,
+		bool in_detection,
+		bool is_logged);
+bool dc_dp_trace_is_logged(struct dc_link *link,
+		bool in_detection);
+struct dp_trace_lt_counts *dc_dp_trace_get_lt_counts(struct dc_link *link,
+		bool in_detection);
+unsigned int dc_dp_trace_get_link_loss_count(struct dc_link *link);
+
+/* Destruct the mst topology of the link and reset the allocated payload table */
+bool reset_cur_dp_mst_topology(struct dc_link *link);
+#endif /* DC_LINK_H_ */