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, 415 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c b/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c
new file mode 100644
index 000000000..4233955e3
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c
@@ -0,0 +1,415 @@
+/*
+ * Copyright 2019 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
+ *
+ */
+
+#include <linux/slab.h>
+
+#include "dm_services.h"
+#include "dm_helpers.h"
+#include "include/hdcp_types.h"
+#include "include/i2caux_interface.h"
+#include "include/signal_types.h"
+#include "core_types.h"
+#include "dc_link_ddc.h"
+#include "link_hwss.h"
+#include "inc/link_dpcd.h"
+
+#define DC_LOGGER \
+	link->ctx->logger
+#define HDCP14_KSV_SIZE 5
+#define HDCP14_MAX_KSV_FIFO_SIZE 127*HDCP14_KSV_SIZE
+
+static const bool hdcp_cmd_is_read[HDCP_MESSAGE_ID_MAX] = {
+	[HDCP_MESSAGE_ID_READ_BKSV] = true,
+	[HDCP_MESSAGE_ID_READ_RI_R0] = true,
+	[HDCP_MESSAGE_ID_READ_PJ] = true,
+	[HDCP_MESSAGE_ID_WRITE_AKSV] = false,
+	[HDCP_MESSAGE_ID_WRITE_AINFO] = false,
+	[HDCP_MESSAGE_ID_WRITE_AN] = false,
+	[HDCP_MESSAGE_ID_READ_VH_X] = true,
+	[HDCP_MESSAGE_ID_READ_VH_0] = true,
+	[HDCP_MESSAGE_ID_READ_VH_1] = true,
+	[HDCP_MESSAGE_ID_READ_VH_2] = true,
+	[HDCP_MESSAGE_ID_READ_VH_3] = true,
+	[HDCP_MESSAGE_ID_READ_VH_4] = true,
+	[HDCP_MESSAGE_ID_READ_BCAPS] = true,
+	[HDCP_MESSAGE_ID_READ_BSTATUS] = true,
+	[HDCP_MESSAGE_ID_READ_KSV_FIFO] = true,
+	[HDCP_MESSAGE_ID_READ_BINFO] = true,
+	[HDCP_MESSAGE_ID_HDCP2VERSION] = true,
+	[HDCP_MESSAGE_ID_RX_CAPS] = true,
+	[HDCP_MESSAGE_ID_WRITE_AKE_INIT] = false,
+	[HDCP_MESSAGE_ID_READ_AKE_SEND_CERT] = true,
+	[HDCP_MESSAGE_ID_WRITE_AKE_NO_STORED_KM] = false,
+	[HDCP_MESSAGE_ID_WRITE_AKE_STORED_KM] = false,
+	[HDCP_MESSAGE_ID_READ_AKE_SEND_H_PRIME] = true,
+	[HDCP_MESSAGE_ID_READ_AKE_SEND_PAIRING_INFO] = true,
+	[HDCP_MESSAGE_ID_WRITE_LC_INIT] = false,
+	[HDCP_MESSAGE_ID_READ_LC_SEND_L_PRIME] = true,
+	[HDCP_MESSAGE_ID_WRITE_SKE_SEND_EKS] = false,
+	[HDCP_MESSAGE_ID_READ_REPEATER_AUTH_SEND_RECEIVERID_LIST] = true,
+	[HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_SEND_ACK] = false,
+	[HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_STREAM_MANAGE] = false,
+	[HDCP_MESSAGE_ID_READ_REPEATER_AUTH_STREAM_READY] = true,
+	[HDCP_MESSAGE_ID_READ_RXSTATUS] = true,
+	[HDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE] = false
+};
+
+static const uint8_t hdcp_i2c_offsets[HDCP_MESSAGE_ID_MAX] = {
+	[HDCP_MESSAGE_ID_READ_BKSV] = 0x0,
+	[HDCP_MESSAGE_ID_READ_RI_R0] = 0x8,
+	[HDCP_MESSAGE_ID_READ_PJ] = 0xA,
+	[HDCP_MESSAGE_ID_WRITE_AKSV] = 0x10,
+	[HDCP_MESSAGE_ID_WRITE_AINFO] = 0x15,
+	[HDCP_MESSAGE_ID_WRITE_AN] = 0x18,
+	[HDCP_MESSAGE_ID_READ_VH_X] = 0x20,
+	[HDCP_MESSAGE_ID_READ_VH_0] = 0x20,
+	[HDCP_MESSAGE_ID_READ_VH_1] = 0x24,
+	[HDCP_MESSAGE_ID_READ_VH_2] = 0x28,
+	[HDCP_MESSAGE_ID_READ_VH_3] = 0x2C,
+	[HDCP_MESSAGE_ID_READ_VH_4] = 0x30,
+	[HDCP_MESSAGE_ID_READ_BCAPS] = 0x40,
+	[HDCP_MESSAGE_ID_READ_BSTATUS] = 0x41,
+	[HDCP_MESSAGE_ID_READ_KSV_FIFO] = 0x43,
+	[HDCP_MESSAGE_ID_READ_BINFO] = 0xFF,
+	[HDCP_MESSAGE_ID_HDCP2VERSION] = 0x50,
+	[HDCP_MESSAGE_ID_WRITE_AKE_INIT] = 0x60,
+	[HDCP_MESSAGE_ID_READ_AKE_SEND_CERT] = 0x80,
+	[HDCP_MESSAGE_ID_WRITE_AKE_NO_STORED_KM] = 0x60,
+	[HDCP_MESSAGE_ID_WRITE_AKE_STORED_KM] = 0x60,
+	[HDCP_MESSAGE_ID_READ_AKE_SEND_H_PRIME] = 0x80,
+	[HDCP_MESSAGE_ID_READ_AKE_SEND_PAIRING_INFO] = 0x80,
+	[HDCP_MESSAGE_ID_WRITE_LC_INIT] = 0x60,
+	[HDCP_MESSAGE_ID_READ_LC_SEND_L_PRIME] = 0x80,
+	[HDCP_MESSAGE_ID_WRITE_SKE_SEND_EKS] = 0x60,
+	[HDCP_MESSAGE_ID_READ_REPEATER_AUTH_SEND_RECEIVERID_LIST] = 0x80,
+	[HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_SEND_ACK] = 0x60,
+	[HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_STREAM_MANAGE] = 0x60,
+	[HDCP_MESSAGE_ID_READ_REPEATER_AUTH_STREAM_READY] = 0x80,
+	[HDCP_MESSAGE_ID_READ_RXSTATUS] = 0x70,
+	[HDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE] = 0x0,
+};
+
+struct protection_properties {
+	bool supported;
+	bool (*process_transaction)(
+		struct dc_link *link,
+		struct hdcp_protection_message *message_info);
+};
+
+static const struct protection_properties non_supported_protection = {
+	.supported = false
+};
+
+static bool hdmi_14_process_transaction(
+	struct dc_link *link,
+	struct hdcp_protection_message *message_info)
+{
+	uint8_t *buff = NULL;
+	bool result;
+	const uint8_t hdcp_i2c_addr_link_primary = 0x3a; /* 0x74 >> 1*/
+	const uint8_t hdcp_i2c_addr_link_secondary = 0x3b; /* 0x76 >> 1*/
+	struct i2c_command i2c_command;
+	uint8_t offset = hdcp_i2c_offsets[message_info->msg_id];
+	struct i2c_payload i2c_payloads[] = {
+		{ true, 0, 1, &offset },
+		/* actual hdcp payload, will be filled later, zeroed for now*/
+		{ 0 }
+	};
+
+	switch (message_info->link) {
+	case HDCP_LINK_SECONDARY:
+		i2c_payloads[0].address = hdcp_i2c_addr_link_secondary;
+		i2c_payloads[1].address = hdcp_i2c_addr_link_secondary;
+		break;
+	case HDCP_LINK_PRIMARY:
+	default:
+		i2c_payloads[0].address = hdcp_i2c_addr_link_primary;
+		i2c_payloads[1].address = hdcp_i2c_addr_link_primary;
+		break;
+	}
+
+	if (hdcp_cmd_is_read[message_info->msg_id]) {
+		i2c_payloads[1].write = false;
+		i2c_command.number_of_payloads = ARRAY_SIZE(i2c_payloads);
+		i2c_payloads[1].length = message_info->length;
+		i2c_payloads[1].data = message_info->data;
+	} else {
+		i2c_command.number_of_payloads = 1;
+		buff = kzalloc(message_info->length + 1, GFP_KERNEL);
+
+		if (!buff)
+			return false;
+
+		buff[0] = offset;
+		memmove(&buff[1], message_info->data, message_info->length);
+		i2c_payloads[0].length = message_info->length + 1;
+		i2c_payloads[0].data = buff;
+	}
+
+	i2c_command.payloads = i2c_payloads;
+	i2c_command.engine = I2C_COMMAND_ENGINE_HW;//only HW
+	i2c_command.speed = link->ddc->ctx->dc->caps.i2c_speed_in_khz;
+
+	result = dm_helpers_submit_i2c(
+			link->ctx,
+			link,
+			&i2c_command);
+	kfree(buff);
+
+	return result;
+}
+
+static const struct protection_properties hdmi_14_protection = {
+	.supported = true,
+	.process_transaction = hdmi_14_process_transaction
+};
+
+static const uint32_t hdcp_dpcd_addrs[HDCP_MESSAGE_ID_MAX] = {
+	[HDCP_MESSAGE_ID_READ_BKSV] = 0x68000,
+	[HDCP_MESSAGE_ID_READ_RI_R0] = 0x68005,
+	[HDCP_MESSAGE_ID_READ_PJ] = 0xFFFFFFFF,
+	[HDCP_MESSAGE_ID_WRITE_AKSV] = 0x68007,
+	[HDCP_MESSAGE_ID_WRITE_AINFO] = 0x6803B,
+	[HDCP_MESSAGE_ID_WRITE_AN] = 0x6800c,
+	[HDCP_MESSAGE_ID_READ_VH_X] = 0x68014,
+	[HDCP_MESSAGE_ID_READ_VH_0] = 0x68014,
+	[HDCP_MESSAGE_ID_READ_VH_1] = 0x68018,
+	[HDCP_MESSAGE_ID_READ_VH_2] = 0x6801c,
+	[HDCP_MESSAGE_ID_READ_VH_3] = 0x68020,
+	[HDCP_MESSAGE_ID_READ_VH_4] = 0x68024,
+	[HDCP_MESSAGE_ID_READ_BCAPS] = 0x68028,
+	[HDCP_MESSAGE_ID_READ_BSTATUS] = 0x68029,
+	[HDCP_MESSAGE_ID_READ_KSV_FIFO] = 0x6802c,
+	[HDCP_MESSAGE_ID_READ_BINFO] = 0x6802a,
+	[HDCP_MESSAGE_ID_RX_CAPS] = 0x6921d,
+	[HDCP_MESSAGE_ID_WRITE_AKE_INIT] = 0x69000,
+	[HDCP_MESSAGE_ID_READ_AKE_SEND_CERT] = 0x6900b,
+	[HDCP_MESSAGE_ID_WRITE_AKE_NO_STORED_KM] = 0x69220,
+	[HDCP_MESSAGE_ID_WRITE_AKE_STORED_KM] = 0x692a0,
+	[HDCP_MESSAGE_ID_READ_AKE_SEND_H_PRIME] = 0x692c0,
+	[HDCP_MESSAGE_ID_READ_AKE_SEND_PAIRING_INFO] = 0x692e0,
+	[HDCP_MESSAGE_ID_WRITE_LC_INIT] = 0x692f0,
+	[HDCP_MESSAGE_ID_READ_LC_SEND_L_PRIME] = 0x692f8,
+	[HDCP_MESSAGE_ID_WRITE_SKE_SEND_EKS] = 0x69318,
+	[HDCP_MESSAGE_ID_READ_REPEATER_AUTH_SEND_RECEIVERID_LIST] = 0x69330,
+	[HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_SEND_ACK] = 0x693e0,
+	[HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_STREAM_MANAGE] = 0x693f0,
+	[HDCP_MESSAGE_ID_READ_REPEATER_AUTH_STREAM_READY] = 0x69473,
+	[HDCP_MESSAGE_ID_READ_RXSTATUS] = 0x69493,
+	[HDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE] = 0x69494
+};
+
+static bool dpcd_access_helper(
+	struct dc_link *link,
+	uint32_t length,
+	uint8_t *data,
+	uint32_t dpcd_addr,
+	bool is_read)
+{
+	enum dc_status status;
+	uint32_t cur_length = 0;
+	uint32_t offset = 0;
+	uint32_t ksv_read_size = 0x6803b - 0x6802c;
+
+	/* Read KSV, need repeatedly handle */
+	if (dpcd_addr == 0x6802c) {
+		if (length % HDCP14_KSV_SIZE) {
+			DC_LOG_ERROR("%s: KsvFifo Size(%d) is not a multiple of HDCP14_KSV_SIZE(%d)\n",
+				__func__,
+				length,
+				HDCP14_KSV_SIZE);
+		}
+		if (length > HDCP14_MAX_KSV_FIFO_SIZE) {
+			DC_LOG_ERROR("%s: KsvFifo Size(%d) is greater than HDCP14_MAX_KSV_FIFO_SIZE(%d)\n",
+				__func__,
+				length,
+				HDCP14_MAX_KSV_FIFO_SIZE);
+		}
+
+		DC_LOG_ERROR("%s: Reading %d Ksv(s) from KsvFifo\n",
+			__func__,
+			length / HDCP14_KSV_SIZE);
+
+		while (length > 0) {
+			if (length > ksv_read_size) {
+				status = core_link_read_dpcd(
+					link,
+					dpcd_addr + offset,
+					data + offset,
+					ksv_read_size);
+
+				data += ksv_read_size;
+				length -= ksv_read_size;
+			} else {
+				status = core_link_read_dpcd(
+					link,
+					dpcd_addr + offset,
+					data + offset,
+					length);
+
+				data += length;
+				length = 0;
+			}
+
+			if (status != DC_OK)
+				return false;
+		}
+	} else {
+		while (length > 0) {
+			if (length > DEFAULT_AUX_MAX_DATA_SIZE)
+				cur_length = DEFAULT_AUX_MAX_DATA_SIZE;
+			else
+				cur_length = length;
+
+			if (is_read) {
+				status = core_link_read_dpcd(
+					link,
+					dpcd_addr + offset,
+					data + offset,
+					cur_length);
+			} else {
+				status = core_link_write_dpcd(
+					link,
+					dpcd_addr + offset,
+					data + offset,
+					cur_length);
+			}
+
+			if (status != DC_OK)
+				return false;
+
+			length -= cur_length;
+			offset += cur_length;
+		}
+	}
+	return true;
+}
+
+static bool dp_11_process_transaction(
+	struct dc_link *link,
+	struct hdcp_protection_message *message_info)
+{
+	return dpcd_access_helper(
+		link,
+		message_info->length,
+		message_info->data,
+		hdcp_dpcd_addrs[message_info->msg_id],
+		hdcp_cmd_is_read[message_info->msg_id]);
+}
+
+static const struct protection_properties dp_11_protection = {
+	.supported = true,
+	.process_transaction = dp_11_process_transaction
+};
+
+static const struct protection_properties *get_protection_properties_by_signal(
+	struct dc_link *link,
+	enum signal_type st,
+	enum hdcp_version version)
+{
+	switch (version) {
+	case HDCP_VERSION_14:
+		switch (st) {
+		case SIGNAL_TYPE_DVI_SINGLE_LINK:
+		case SIGNAL_TYPE_DVI_DUAL_LINK:
+		case SIGNAL_TYPE_HDMI_TYPE_A:
+			return &hdmi_14_protection;
+		case SIGNAL_TYPE_DISPLAY_PORT:
+			if (link &&
+				(link->dpcd_caps.dongle_type == DISPLAY_DONGLE_DP_VGA_CONVERTER ||
+				link->dpcd_caps.dongle_caps.dongle_type == DISPLAY_DONGLE_DP_VGA_CONVERTER)) {
+				return &non_supported_protection;
+			}
+			return &dp_11_protection;
+		case SIGNAL_TYPE_DISPLAY_PORT_MST:
+		case SIGNAL_TYPE_EDP:
+			return &dp_11_protection;
+		default:
+			return &non_supported_protection;
+		}
+		break;
+	case HDCP_VERSION_22:
+		switch (st) {
+		case SIGNAL_TYPE_DVI_SINGLE_LINK:
+		case SIGNAL_TYPE_DVI_DUAL_LINK:
+		case SIGNAL_TYPE_HDMI_TYPE_A:
+			return &hdmi_14_protection; //todo version2.2
+		case SIGNAL_TYPE_DISPLAY_PORT:
+		case SIGNAL_TYPE_DISPLAY_PORT_MST:
+		case SIGNAL_TYPE_EDP:
+			return &dp_11_protection;  //todo version2.2
+		default:
+			return &non_supported_protection;
+		}
+		break;
+	default:
+		return &non_supported_protection;
+	}
+}
+
+enum hdcp_message_status dc_process_hdcp_msg(
+	enum signal_type signal,
+	struct dc_link *link,
+	struct hdcp_protection_message *message_info)
+{
+	enum hdcp_message_status status = HDCP_MESSAGE_FAILURE;
+	uint32_t i = 0;
+
+	const struct protection_properties *protection_props;
+
+	if (!message_info)
+		return HDCP_MESSAGE_UNSUPPORTED;
+
+	if (message_info->msg_id < HDCP_MESSAGE_ID_READ_BKSV ||
+		message_info->msg_id >= HDCP_MESSAGE_ID_MAX)
+		return HDCP_MESSAGE_UNSUPPORTED;
+
+	protection_props =
+		get_protection_properties_by_signal(
+			link,
+			signal,
+			message_info->version);
+
+	if (!protection_props->supported)
+		return HDCP_MESSAGE_UNSUPPORTED;
+
+	if (protection_props->process_transaction(
+		link,
+		message_info)) {
+		status = HDCP_MESSAGE_SUCCESS;
+	} else {
+		for (i = 0; i < message_info->max_retries; i++) {
+			if (protection_props->process_transaction(
+						link,
+						message_info)) {
+				status = HDCP_MESSAGE_SUCCESS;
+				break;
+			}
+		}
+	}
+
+	return status;
+}
+