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, 345 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.h b/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.h
new file mode 100644
index 000000000..3f45ecd18
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.h
@@ -0,0 +1,345 @@
+/*
+ * Copyright 2018 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 __DCE_I2C_HW_H__
+#define __DCE_I2C_HW_H__
+
+enum dc_i2c_status {
+	DC_I2C_STATUS__DC_I2C_STATUS_IDLE,
+	DC_I2C_STATUS__DC_I2C_STATUS_USED_BY_SW,
+	DC_I2C_STATUS__DC_I2C_STATUS_USED_BY_HW,
+	DC_I2C_REG_RW_CNTL_STATUS_DMCU_ONLY = 2,
+};
+
+enum dc_i2c_arbitration {
+	DC_I2C_ARBITRATION__DC_I2C_SW_PRIORITY_NORMAL,
+	DC_I2C_ARBITRATION__DC_I2C_SW_PRIORITY_HIGH
+};
+
+enum i2c_channel_operation_result {
+	I2C_CHANNEL_OPERATION_SUCCEEDED,
+	I2C_CHANNEL_OPERATION_FAILED,
+	I2C_CHANNEL_OPERATION_NOT_GRANTED,
+	I2C_CHANNEL_OPERATION_IS_BUSY,
+	I2C_CHANNEL_OPERATION_NO_HANDLE_PROVIDED,
+	I2C_CHANNEL_OPERATION_CHANNEL_IN_USE,
+	I2C_CHANNEL_OPERATION_CHANNEL_CLIENT_MAX_ALLOWED,
+	I2C_CHANNEL_OPERATION_ENGINE_BUSY,
+	I2C_CHANNEL_OPERATION_TIMEOUT,
+	I2C_CHANNEL_OPERATION_NO_RESPONSE,
+	I2C_CHANNEL_OPERATION_HW_REQUEST_I2C_BUS,
+	I2C_CHANNEL_OPERATION_WRONG_PARAMETER,
+	I2C_CHANNEL_OPERATION_OUT_NB_OF_RETRIES,
+	I2C_CHANNEL_OPERATION_NOT_STARTED
+};
+
+
+enum dce_i2c_transaction_action {
+	DCE_I2C_TRANSACTION_ACTION_I2C_WRITE = 0x00,
+	DCE_I2C_TRANSACTION_ACTION_I2C_READ = 0x10,
+	DCE_I2C_TRANSACTION_ACTION_I2C_STATUS_REQUEST = 0x20,
+
+	DCE_I2C_TRANSACTION_ACTION_I2C_WRITE_MOT = 0x40,
+	DCE_I2C_TRANSACTION_ACTION_I2C_READ_MOT = 0x50,
+	DCE_I2C_TRANSACTION_ACTION_I2C_STATUS_REQUEST_MOT = 0x60,
+
+	DCE_I2C_TRANSACTION_ACTION_DP_WRITE = 0x80,
+	DCE_I2C_TRANSACTION_ACTION_DP_READ = 0x90
+};
+
+enum {
+	I2C_SETUP_TIME_LIMIT_DCE = 255,
+	I2C_SETUP_TIME_LIMIT_DCN = 3,
+	I2C_HW_BUFFER_SIZE_DCE100 = 538,
+	I2C_HW_BUFFER_SIZE_DCE = 144,
+	I2C_SEND_RESET_LENGTH_9 = 9,
+	I2C_SEND_RESET_LENGTH_10 = 10,
+	DEFAULT_I2C_HW_SPEED = 50,
+	DEFAULT_I2C_HW_SPEED_100KHZ = 100,
+	TRANSACTION_TIMEOUT_IN_I2C_CLOCKS = 32,
+};
+
+#define I2C_HW_ENGINE_COMMON_REG_LIST(id)\
+	SRI(SETUP, DC_I2C_DDC, id),\
+	SRI(SPEED, DC_I2C_DDC, id),\
+	SRI(HW_STATUS, DC_I2C_DDC, id),\
+	SR(DC_I2C_ARBITRATION),\
+	SR(DC_I2C_CONTROL),\
+	SR(DC_I2C_SW_STATUS),\
+	SR(DC_I2C_TRANSACTION0),\
+	SR(DC_I2C_TRANSACTION1),\
+	SR(DC_I2C_TRANSACTION2),\
+	SR(DC_I2C_TRANSACTION3),\
+	SR(DC_I2C_DATA),\
+	SR(MICROSECOND_TIME_BASE_DIV)
+
+#define I2C_HW_ENGINE_COMMON_REG_LIST_DCN30(id)\
+	I2C_HW_ENGINE_COMMON_REG_LIST(id),\
+	SR(DIO_MEM_PWR_CTRL),\
+	SR(DIO_MEM_PWR_STATUS)
+
+#define I2C_SF(reg_name, field_name, post_fix)\
+	.field_name = reg_name ## __ ## field_name ## post_fix
+
+#define I2C_COMMON_MASK_SH_LIST_DCE_COMMON_BASE(mask_sh)\
+	I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_ENABLE, mask_sh),\
+	I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_TIME_LIMIT, mask_sh),\
+	I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_DATA_DRIVE_EN, mask_sh),\
+	I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_CLK_DRIVE_EN, mask_sh),\
+	I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_DATA_DRIVE_SEL, mask_sh),\
+	I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_INTRA_TRANSACTION_DELAY, mask_sh),\
+	I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_INTRA_BYTE_DELAY, mask_sh),\
+	I2C_SF(DC_I2C_DDC1_HW_STATUS, DC_I2C_DDC1_HW_STATUS, mask_sh),\
+	I2C_SF(DC_I2C_ARBITRATION, DC_I2C_SW_USE_I2C_REG_REQ, mask_sh),\
+	I2C_SF(DC_I2C_ARBITRATION, DC_I2C_SW_DONE_USING_I2C_REG, mask_sh),\
+	I2C_SF(DC_I2C_ARBITRATION, DC_I2C_NO_QUEUED_SW_GO, mask_sh),\
+	I2C_SF(DC_I2C_ARBITRATION, DC_I2C_SW_PRIORITY, mask_sh),\
+	I2C_SF(DC_I2C_CONTROL, DC_I2C_SOFT_RESET, mask_sh),\
+	I2C_SF(DC_I2C_CONTROL, DC_I2C_SW_STATUS_RESET, mask_sh),\
+	I2C_SF(DC_I2C_CONTROL, DC_I2C_GO, mask_sh),\
+	I2C_SF(DC_I2C_CONTROL, DC_I2C_SEND_RESET, mask_sh),\
+	I2C_SF(DC_I2C_CONTROL, DC_I2C_TRANSACTION_COUNT, mask_sh),\
+	I2C_SF(DC_I2C_CONTROL, DC_I2C_DDC_SELECT, mask_sh),\
+	I2C_SF(DC_I2C_DDC1_SPEED, DC_I2C_DDC1_PRESCALE, mask_sh),\
+	I2C_SF(DC_I2C_DDC1_SPEED, DC_I2C_DDC1_THRESHOLD, mask_sh),\
+	I2C_SF(DC_I2C_SW_STATUS, DC_I2C_SW_STOPPED_ON_NACK, mask_sh),\
+	I2C_SF(DC_I2C_SW_STATUS, DC_I2C_SW_TIMEOUT, mask_sh),\
+	I2C_SF(DC_I2C_SW_STATUS, DC_I2C_SW_ABORTED, mask_sh),\
+	I2C_SF(DC_I2C_SW_STATUS, DC_I2C_SW_DONE, mask_sh),\
+	I2C_SF(DC_I2C_SW_STATUS, DC_I2C_SW_STATUS, mask_sh),\
+	I2C_SF(DC_I2C_TRANSACTION0, DC_I2C_STOP_ON_NACK0, mask_sh),\
+	I2C_SF(DC_I2C_TRANSACTION0, DC_I2C_START0, mask_sh),\
+	I2C_SF(DC_I2C_TRANSACTION0, DC_I2C_RW0, mask_sh),\
+	I2C_SF(DC_I2C_TRANSACTION0, DC_I2C_STOP0, mask_sh),\
+	I2C_SF(DC_I2C_TRANSACTION0, DC_I2C_COUNT0, mask_sh),\
+	I2C_SF(DC_I2C_DATA, DC_I2C_DATA_RW, mask_sh),\
+	I2C_SF(DC_I2C_DATA, DC_I2C_DATA, mask_sh),\
+	I2C_SF(DC_I2C_DATA, DC_I2C_INDEX, mask_sh),\
+	I2C_SF(DC_I2C_DATA, DC_I2C_INDEX_WRITE, mask_sh),\
+	I2C_SF(MICROSECOND_TIME_BASE_DIV, XTAL_REF_DIV, mask_sh),\
+	I2C_SF(MICROSECOND_TIME_BASE_DIV, MICROSECOND_TIME_BASE_DIV, mask_sh),\
+	I2C_SF(DC_I2C_ARBITRATION, DC_I2C_REG_RW_CNTL_STATUS, mask_sh)
+
+#define I2C_COMMON_MASK_SH_LIST_DCE110(mask_sh)\
+	I2C_COMMON_MASK_SH_LIST_DCE_COMMON_BASE(mask_sh),\
+	I2C_SF(DC_I2C_DDC1_SPEED, DC_I2C_DDC1_START_STOP_TIMING_CNTL, mask_sh)
+
+struct dce_i2c_shift {
+	uint8_t DC_I2C_DDC1_ENABLE;
+	uint8_t DC_I2C_DDC1_TIME_LIMIT;
+	uint8_t DC_I2C_DDC1_DATA_DRIVE_EN;
+	uint8_t DC_I2C_DDC1_CLK_DRIVE_EN;
+	uint8_t DC_I2C_DDC1_DATA_DRIVE_SEL;
+	uint8_t DC_I2C_DDC1_INTRA_TRANSACTION_DELAY;
+	uint8_t DC_I2C_DDC1_INTRA_BYTE_DELAY;
+	uint8_t DC_I2C_DDC1_HW_STATUS;
+	uint8_t DC_I2C_SW_DONE_USING_I2C_REG;
+	uint8_t DC_I2C_SW_USE_I2C_REG_REQ;
+	uint8_t DC_I2C_NO_QUEUED_SW_GO;
+	uint8_t DC_I2C_SW_PRIORITY;
+	uint8_t DC_I2C_SOFT_RESET;
+	uint8_t DC_I2C_SW_STATUS_RESET;
+	uint8_t DC_I2C_GO;
+	uint8_t DC_I2C_SEND_RESET;
+	uint8_t DC_I2C_TRANSACTION_COUNT;
+	uint8_t DC_I2C_DDC_SELECT;
+	uint8_t DC_I2C_DDC1_PRESCALE;
+	uint8_t DC_I2C_DDC1_THRESHOLD;
+	uint8_t DC_I2C_DDC1_START_STOP_TIMING_CNTL;
+	uint8_t DC_I2C_SW_STOPPED_ON_NACK;
+	uint8_t DC_I2C_SW_TIMEOUT;
+	uint8_t DC_I2C_SW_ABORTED;
+	uint8_t DC_I2C_SW_DONE;
+	uint8_t DC_I2C_SW_STATUS;
+	uint8_t DC_I2C_STOP_ON_NACK0;
+	uint8_t DC_I2C_START0;
+	uint8_t DC_I2C_RW0;
+	uint8_t DC_I2C_STOP0;
+	uint8_t DC_I2C_COUNT0;
+	uint8_t DC_I2C_DATA_RW;
+	uint8_t DC_I2C_DATA;
+	uint8_t DC_I2C_INDEX;
+	uint8_t DC_I2C_INDEX_WRITE;
+	uint8_t XTAL_REF_DIV;
+	uint8_t MICROSECOND_TIME_BASE_DIV;
+	uint8_t DC_I2C_DDC1_SEND_RESET_LENGTH;
+	uint8_t DC_I2C_REG_RW_CNTL_STATUS;
+	uint8_t I2C_LIGHT_SLEEP_FORCE;
+	uint8_t I2C_MEM_PWR_STATE;
+};
+
+struct dce_i2c_mask {
+	uint32_t DC_I2C_DDC1_ENABLE;
+	uint32_t DC_I2C_DDC1_TIME_LIMIT;
+	uint32_t DC_I2C_DDC1_DATA_DRIVE_EN;
+	uint32_t DC_I2C_DDC1_CLK_DRIVE_EN;
+	uint32_t DC_I2C_DDC1_DATA_DRIVE_SEL;
+	uint32_t DC_I2C_DDC1_INTRA_TRANSACTION_DELAY;
+	uint32_t DC_I2C_DDC1_INTRA_BYTE_DELAY;
+	uint32_t DC_I2C_DDC1_HW_STATUS;
+	uint32_t DC_I2C_SW_DONE_USING_I2C_REG;
+	uint32_t DC_I2C_SW_USE_I2C_REG_REQ;
+	uint32_t DC_I2C_NO_QUEUED_SW_GO;
+	uint32_t DC_I2C_SW_PRIORITY;
+	uint32_t DC_I2C_SOFT_RESET;
+	uint32_t DC_I2C_SW_STATUS_RESET;
+	uint32_t DC_I2C_GO;
+	uint32_t DC_I2C_SEND_RESET;
+	uint32_t DC_I2C_TRANSACTION_COUNT;
+	uint32_t DC_I2C_DDC_SELECT;
+	uint32_t DC_I2C_DDC1_PRESCALE;
+	uint32_t DC_I2C_DDC1_THRESHOLD;
+	uint32_t DC_I2C_DDC1_START_STOP_TIMING_CNTL;
+	uint32_t DC_I2C_SW_STOPPED_ON_NACK;
+	uint32_t DC_I2C_SW_TIMEOUT;
+	uint32_t DC_I2C_SW_ABORTED;
+	uint32_t DC_I2C_SW_DONE;
+	uint32_t DC_I2C_SW_STATUS;
+	uint32_t DC_I2C_STOP_ON_NACK0;
+	uint32_t DC_I2C_START0;
+	uint32_t DC_I2C_RW0;
+	uint32_t DC_I2C_STOP0;
+	uint32_t DC_I2C_COUNT0;
+	uint32_t DC_I2C_DATA_RW;
+	uint32_t DC_I2C_DATA;
+	uint32_t DC_I2C_INDEX;
+	uint32_t DC_I2C_INDEX_WRITE;
+	uint32_t XTAL_REF_DIV;
+	uint32_t MICROSECOND_TIME_BASE_DIV;
+	uint32_t DC_I2C_DDC1_SEND_RESET_LENGTH;
+	uint32_t DC_I2C_REG_RW_CNTL_STATUS;
+	uint32_t I2C_LIGHT_SLEEP_FORCE;
+	uint32_t I2C_MEM_PWR_STATE;
+};
+
+#define I2C_COMMON_MASK_SH_LIST_DCN2(mask_sh)\
+	I2C_COMMON_MASK_SH_LIST_DCE110(mask_sh),\
+	I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_SEND_RESET_LENGTH, mask_sh)
+
+#define I2C_COMMON_MASK_SH_LIST_DCN30(mask_sh)\
+	I2C_COMMON_MASK_SH_LIST_DCN2(mask_sh),\
+	I2C_SF(DIO_MEM_PWR_CTRL, I2C_LIGHT_SLEEP_FORCE, mask_sh),\
+	I2C_SF(DIO_MEM_PWR_STATUS, I2C_MEM_PWR_STATE, mask_sh)
+
+struct dce_i2c_registers {
+	uint32_t SETUP;
+	uint32_t SPEED;
+	uint32_t HW_STATUS;
+	uint32_t DC_I2C_ARBITRATION;
+	uint32_t DC_I2C_CONTROL;
+	uint32_t DC_I2C_SW_STATUS;
+	uint32_t DC_I2C_TRANSACTION0;
+	uint32_t DC_I2C_TRANSACTION1;
+	uint32_t DC_I2C_TRANSACTION2;
+	uint32_t DC_I2C_TRANSACTION3;
+	uint32_t DC_I2C_DATA;
+	uint32_t MICROSECOND_TIME_BASE_DIV;
+	uint32_t DIO_MEM_PWR_CTRL;
+	uint32_t DIO_MEM_PWR_STATUS;
+};
+
+enum dce_i2c_transaction_address_space {
+	DCE_I2C_TRANSACTION_ADDRESS_SPACE_I2C = 1,
+	DCE_I2C_TRANSACTION_ADDRESS_SPACE_DPCD
+};
+
+struct i2c_request_transaction_data {
+	enum dce_i2c_transaction_action action;
+	enum i2c_channel_operation_result status;
+	uint8_t address;
+	uint32_t length;
+	uint8_t *data;
+};
+
+struct dce_i2c_hw {
+	struct ddc *ddc;
+	uint32_t engine_keep_power_up_count;
+	uint32_t transaction_count;
+	uint32_t buffer_used_bytes;
+	uint32_t buffer_used_write;
+	uint32_t reference_frequency;
+	uint32_t default_speed;
+	uint32_t engine_id;
+	uint32_t setup_limit;
+	uint32_t send_reset_length;
+	uint32_t buffer_size;
+	struct dc_context *ctx;
+
+	const struct dce_i2c_registers *regs;
+	const struct dce_i2c_shift *shifts;
+	const struct dce_i2c_mask *masks;
+};
+
+void dce_i2c_hw_construct(
+	struct dce_i2c_hw *dce_i2c_hw,
+	struct dc_context *ctx,
+	uint32_t engine_id,
+	const struct dce_i2c_registers *regs,
+	const struct dce_i2c_shift *shifts,
+	const struct dce_i2c_mask *masks);
+
+void dce100_i2c_hw_construct(
+	struct dce_i2c_hw *dce_i2c_hw,
+	struct dc_context *ctx,
+	uint32_t engine_id,
+	const struct dce_i2c_registers *regs,
+	const struct dce_i2c_shift *shifts,
+	const struct dce_i2c_mask *masks);
+
+void dce112_i2c_hw_construct(
+	struct dce_i2c_hw *dce_i2c_hw,
+	struct dc_context *ctx,
+	uint32_t engine_id,
+	const struct dce_i2c_registers *regs,
+	const struct dce_i2c_shift *shifts,
+	const struct dce_i2c_mask *masks);
+
+void dcn1_i2c_hw_construct(
+	struct dce_i2c_hw *dce_i2c_hw,
+	struct dc_context *ctx,
+	uint32_t engine_id,
+	const struct dce_i2c_registers *regs,
+	const struct dce_i2c_shift *shifts,
+	const struct dce_i2c_mask *masks);
+
+void dcn2_i2c_hw_construct(
+	struct dce_i2c_hw *dce_i2c_hw,
+	struct dc_context *ctx,
+	uint32_t engine_id,
+	const struct dce_i2c_registers *regs,
+	const struct dce_i2c_shift *shifts,
+	const struct dce_i2c_mask *masks);
+
+bool dce_i2c_submit_command_hw(
+	struct resource_pool *pool,
+	struct ddc *ddc,
+	struct i2c_command *cmd,
+	struct dce_i2c_hw *dce_i2c_hw);
+
+struct dce_i2c_hw *acquire_i2c_hw_engine(
+	struct resource_pool *pool,
+	struct ddc *ddc);
+
+#endif