From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- .../drm/amd/display/modules/hdcp/hdcp2_execution.c | 889 +++++++++++++++++++++ 1 file changed, 889 insertions(+) create mode 100644 drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c (limited to 'drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c') diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c new file mode 100644 index 000000000..91c22b96e --- /dev/null +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c @@ -0,0 +1,889 @@ +/* + * 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 + * + */ + +#include + +#include "hdcp.h" + +static inline enum mod_hdcp_status check_receiver_id_list_ready(struct mod_hdcp *hdcp) +{ + uint8_t is_ready = 0; + + if (is_dp_hdcp(hdcp)) + is_ready = HDCP_2_2_DP_RXSTATUS_READY(hdcp->auth.msg.hdcp2.rxstatus_dp) ? 1 : 0; + else + is_ready = (HDCP_2_2_HDMI_RXSTATUS_READY(hdcp->auth.msg.hdcp2.rxstatus[1]) && + (HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 | + hdcp->auth.msg.hdcp2.rxstatus[0])) ? 1 : 0; + return is_ready ? MOD_HDCP_STATUS_SUCCESS : + MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_NOT_READY; +} + +static inline enum mod_hdcp_status check_hdcp2_capable(struct mod_hdcp *hdcp) +{ + enum mod_hdcp_status status; + + if (is_dp_hdcp(hdcp)) + status = (hdcp->auth.msg.hdcp2.rxcaps_dp[0] == HDCP_2_2_RX_CAPS_VERSION_VAL) && + HDCP_2_2_DP_HDCP_CAPABLE(hdcp->auth.msg.hdcp2.rxcaps_dp[2]) ? + MOD_HDCP_STATUS_SUCCESS : + MOD_HDCP_STATUS_HDCP2_NOT_CAPABLE; + else + status = (hdcp->auth.msg.hdcp2.hdcp2version_hdmi & HDCP_2_2_HDMI_SUPPORT_MASK) ? + MOD_HDCP_STATUS_SUCCESS : + MOD_HDCP_STATUS_HDCP2_NOT_CAPABLE; + return status; +} + +static inline enum mod_hdcp_status check_reauthentication_request( + struct mod_hdcp *hdcp) +{ + uint8_t ret = 0; + + if (is_dp_hdcp(hdcp)) + ret = HDCP_2_2_DP_RXSTATUS_REAUTH_REQ(hdcp->auth.msg.hdcp2.rxstatus_dp) ? + MOD_HDCP_STATUS_HDCP2_REAUTH_REQUEST : + MOD_HDCP_STATUS_SUCCESS; + else + ret = HDCP_2_2_HDMI_RXSTATUS_REAUTH_REQ(hdcp->auth.msg.hdcp2.rxstatus[1]) ? + MOD_HDCP_STATUS_HDCP2_REAUTH_REQUEST : + MOD_HDCP_STATUS_SUCCESS; + return ret; +} + +static inline enum mod_hdcp_status check_link_integrity_failure_dp( + struct mod_hdcp *hdcp) +{ + return HDCP_2_2_DP_RXSTATUS_LINK_FAILED(hdcp->auth.msg.hdcp2.rxstatus_dp) ? + MOD_HDCP_STATUS_HDCP2_REAUTH_LINK_INTEGRITY_FAILURE : + MOD_HDCP_STATUS_SUCCESS; +} + +static enum mod_hdcp_status check_ake_cert_available(struct mod_hdcp *hdcp) +{ + enum mod_hdcp_status status; + uint16_t size; + + if (is_dp_hdcp(hdcp)) { + status = MOD_HDCP_STATUS_SUCCESS; + } else { + status = mod_hdcp_read_rxstatus(hdcp); + if (status == MOD_HDCP_STATUS_SUCCESS) { + size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 | + hdcp->auth.msg.hdcp2.rxstatus[0]; + status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_cert)) ? + MOD_HDCP_STATUS_SUCCESS : + MOD_HDCP_STATUS_HDCP2_AKE_CERT_PENDING; + } + } + return status; +} + +static enum mod_hdcp_status check_h_prime_available(struct mod_hdcp *hdcp) +{ + enum mod_hdcp_status status; + uint8_t size; + + status = mod_hdcp_read_rxstatus(hdcp); + if (status != MOD_HDCP_STATUS_SUCCESS) + goto out; + + if (is_dp_hdcp(hdcp)) { + status = HDCP_2_2_DP_RXSTATUS_H_PRIME(hdcp->auth.msg.hdcp2.rxstatus_dp) ? + MOD_HDCP_STATUS_SUCCESS : + MOD_HDCP_STATUS_HDCP2_H_PRIME_PENDING; + } else { + size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 | + hdcp->auth.msg.hdcp2.rxstatus[0]; + status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_h_prime)) ? + MOD_HDCP_STATUS_SUCCESS : + MOD_HDCP_STATUS_HDCP2_H_PRIME_PENDING; + } +out: + return status; +} + +static enum mod_hdcp_status check_pairing_info_available(struct mod_hdcp *hdcp) +{ + enum mod_hdcp_status status; + uint8_t size; + + status = mod_hdcp_read_rxstatus(hdcp); + if (status != MOD_HDCP_STATUS_SUCCESS) + goto out; + + if (is_dp_hdcp(hdcp)) { + status = HDCP_2_2_DP_RXSTATUS_PAIRING(hdcp->auth.msg.hdcp2.rxstatus_dp) ? + MOD_HDCP_STATUS_SUCCESS : + MOD_HDCP_STATUS_HDCP2_PAIRING_INFO_PENDING; + } else { + size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 | + hdcp->auth.msg.hdcp2.rxstatus[0]; + status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_pairing_info)) ? + MOD_HDCP_STATUS_SUCCESS : + MOD_HDCP_STATUS_HDCP2_PAIRING_INFO_PENDING; + } +out: + return status; +} + +static enum mod_hdcp_status poll_l_prime_available(struct mod_hdcp *hdcp) +{ + enum mod_hdcp_status status; + uint8_t size; + uint16_t max_wait = 20; // units of ms + uint16_t num_polls = 5; + uint16_t wait_time = max_wait / num_polls; + + if (is_dp_hdcp(hdcp)) + status = MOD_HDCP_STATUS_INVALID_OPERATION; + else + for (; num_polls; num_polls--) { + msleep(wait_time); + + status = mod_hdcp_read_rxstatus(hdcp); + if (status != MOD_HDCP_STATUS_SUCCESS) + break; + + size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 | + hdcp->auth.msg.hdcp2.rxstatus[0]; + status = (size == sizeof(hdcp->auth.msg.hdcp2.lc_l_prime)) ? + MOD_HDCP_STATUS_SUCCESS : + MOD_HDCP_STATUS_HDCP2_L_PRIME_PENDING; + if (status == MOD_HDCP_STATUS_SUCCESS) + break; + } + return status; +} + +static enum mod_hdcp_status check_stream_ready_available(struct mod_hdcp *hdcp) +{ + enum mod_hdcp_status status; + uint8_t size; + + if (is_dp_hdcp(hdcp)) { + status = MOD_HDCP_STATUS_INVALID_OPERATION; + } else { + status = mod_hdcp_read_rxstatus(hdcp); + if (status != MOD_HDCP_STATUS_SUCCESS) + goto out; + size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 | + hdcp->auth.msg.hdcp2.rxstatus[0]; + status = (size == sizeof(hdcp->auth.msg.hdcp2.repeater_auth_stream_ready)) ? + MOD_HDCP_STATUS_SUCCESS : + MOD_HDCP_STATUS_HDCP2_STREAM_READY_PENDING; + } +out: + return status; +} + +static inline uint8_t get_device_count(struct mod_hdcp *hdcp) +{ + return HDCP_2_2_DEV_COUNT_LO(hdcp->auth.msg.hdcp2.rx_id_list[2]) + + (HDCP_2_2_DEV_COUNT_HI(hdcp->auth.msg.hdcp2.rx_id_list[1]) << 4); +} + +static enum mod_hdcp_status check_device_count(struct mod_hdcp *hdcp) +{ + /* Avoid device count == 0 to do authentication */ + if (0 == get_device_count(hdcp)) { + return MOD_HDCP_STATUS_HDCP1_DEVICE_COUNT_MISMATCH_FAILURE; + } + + /* Some MST display may choose to report the internal panel as an HDCP RX. */ + /* To update this condition with 1(because the immediate repeater's internal */ + /* panel is possibly not included in DEVICE_COUNT) + get_device_count(hdcp). */ + /* Device count must be greater than or equal to tracked hdcp displays. */ + return ((1 + get_device_count(hdcp)) < get_active_display_count(hdcp)) ? + MOD_HDCP_STATUS_HDCP2_DEVICE_COUNT_MISMATCH_FAILURE : + MOD_HDCP_STATUS_SUCCESS; +} + +static uint8_t process_rxstatus(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input, + enum mod_hdcp_status *status) +{ + if (!mod_hdcp_execute_and_set(mod_hdcp_read_rxstatus, + &input->rxstatus_read, status, + hdcp, "rxstatus_read")) + goto out; + if (!mod_hdcp_execute_and_set(check_reauthentication_request, + &input->reauth_request_check, status, + hdcp, "reauth_request_check")) + goto out; + if (is_dp_hdcp(hdcp)) { + if (!mod_hdcp_execute_and_set(check_link_integrity_failure_dp, + &input->link_integrity_check_dp, status, + hdcp, "link_integrity_check_dp")) + goto out; + } + if (hdcp->connection.is_repeater) + if (check_receiver_id_list_ready(hdcp) == + MOD_HDCP_STATUS_SUCCESS) { + HDCP_INPUT_PASS_TRACE(hdcp, "rx_id_list_ready"); + event_ctx->rx_id_list_ready = 1; + if (is_dp_hdcp(hdcp)) + hdcp->auth.msg.hdcp2.rx_id_list_size = + sizeof(hdcp->auth.msg.hdcp2.rx_id_list); + else + hdcp->auth.msg.hdcp2.rx_id_list_size = + HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 | + hdcp->auth.msg.hdcp2.rxstatus[0]; + } +out: + return (*status == MOD_HDCP_STATUS_SUCCESS); +} + +static enum mod_hdcp_status known_hdcp2_capable_rx(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) { + event_ctx->unexpected_event = 1; + goto out; + } + + if (!mod_hdcp_execute_and_set(mod_hdcp_read_hdcp2version, + &input->hdcp2version_read, &status, + hdcp, "hdcp2version_read")) + goto out; + if (!mod_hdcp_execute_and_set(check_hdcp2_capable, + &input->hdcp2_capable_check, &status, + hdcp, "hdcp2_capable")) + goto out; +out: + return status; +} + +static enum mod_hdcp_status send_ake_init(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) { + event_ctx->unexpected_event = 1; + goto out; + } + + if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_create_session, + &input->create_session, &status, + hdcp, "create_session")) + goto out; + if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_ake_init, + &input->ake_init_prepare, &status, + hdcp, "ake_init_prepare")) + goto out; + if (!mod_hdcp_execute_and_set(mod_hdcp_write_ake_init, + &input->ake_init_write, &status, + hdcp, "ake_init_write")) + goto out; +out: + return status; +} + +static enum mod_hdcp_status validate_ake_cert(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && + event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { + event_ctx->unexpected_event = 1; + goto out; + } + + if (is_hdmi_dvi_sl_hdcp(hdcp)) + if (!mod_hdcp_execute_and_set(check_ake_cert_available, + &input->ake_cert_available, &status, + hdcp, "ake_cert_available")) + goto out; + if (!mod_hdcp_execute_and_set(mod_hdcp_read_ake_cert, + &input->ake_cert_read, &status, + hdcp, "ake_cert_read")) + goto out; + if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_ake_cert, + &input->ake_cert_validation, &status, + hdcp, "ake_cert_validation")) + goto out; +out: + return status; +} + +static enum mod_hdcp_status send_no_stored_km(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) { + event_ctx->unexpected_event = 1; + goto out; + } + + if (!mod_hdcp_execute_and_set(mod_hdcp_write_no_stored_km, + &input->no_stored_km_write, &status, + hdcp, "no_stored_km_write")) + goto out; +out: + return status; +} + +static enum mod_hdcp_status read_h_prime(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && + event_ctx->event != MOD_HDCP_EVENT_CPIRQ && + event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { + event_ctx->unexpected_event = 1; + goto out; + } + + if (!mod_hdcp_execute_and_set(check_h_prime_available, + &input->h_prime_available, &status, + hdcp, "h_prime_available")) + goto out; + + if (!mod_hdcp_execute_and_set(mod_hdcp_read_h_prime, + &input->h_prime_read, &status, + hdcp, "h_prime_read")) + goto out; +out: + return status; +} + +static enum mod_hdcp_status read_pairing_info_and_validate_h_prime( + struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && + event_ctx->event != MOD_HDCP_EVENT_CPIRQ && + event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { + event_ctx->unexpected_event = 1; + goto out; + } + + if (!mod_hdcp_execute_and_set(check_pairing_info_available, + &input->pairing_available, &status, + hdcp, "pairing_available")) + goto out; + if (!mod_hdcp_execute_and_set(mod_hdcp_read_pairing_info, + &input->pairing_info_read, &status, + hdcp, "pairing_info_read")) + goto out; + if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_h_prime, + &input->h_prime_validation, &status, + hdcp, "h_prime_validation")) + goto out; +out: + return status; +} + +static enum mod_hdcp_status send_stored_km(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) { + event_ctx->unexpected_event = 1; + goto out; + } + + if (!mod_hdcp_execute_and_set(mod_hdcp_write_stored_km, + &input->stored_km_write, &status, + hdcp, "stored_km_write")) + goto out; +out: + return status; +} + +static enum mod_hdcp_status validate_h_prime(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && + event_ctx->event != MOD_HDCP_EVENT_CPIRQ && + event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { + event_ctx->unexpected_event = 1; + goto out; + } + + if (!mod_hdcp_execute_and_set(check_h_prime_available, + &input->h_prime_available, &status, + hdcp, "h_prime_available")) + goto out; + if (!mod_hdcp_execute_and_set(mod_hdcp_read_h_prime, + &input->h_prime_read, &status, + hdcp, "h_prime_read")) + goto out; + if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_h_prime, + &input->h_prime_validation, &status, + hdcp, "h_prime_validation")) + goto out; +out: + return status; +} + +static enum mod_hdcp_status locality_check(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) { + event_ctx->unexpected_event = 1; + goto out; + } + + if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_lc_init, + &input->lc_init_prepare, &status, + hdcp, "lc_init_prepare")) + goto out; + if (!mod_hdcp_execute_and_set(mod_hdcp_write_lc_init, + &input->lc_init_write, &status, + hdcp, "lc_init_write")) + goto out; + if (is_dp_hdcp(hdcp)) + msleep(16); + else + if (!mod_hdcp_execute_and_set(poll_l_prime_available, + &input->l_prime_available_poll, &status, + hdcp, "l_prime_available_poll")) + goto out; + if (!mod_hdcp_execute_and_set(mod_hdcp_read_l_prime, + &input->l_prime_read, &status, + hdcp, "l_prime_read")) + goto out; + if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_l_prime, + &input->l_prime_validation, &status, + hdcp, "l_prime_validation")) + goto out; +out: + return status; +} + +static enum mod_hdcp_status exchange_ks_and_test_for_repeater(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) { + event_ctx->unexpected_event = 1; + goto out; + } + + if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_eks, + &input->eks_prepare, &status, + hdcp, "eks_prepare")) + goto out; + if (!mod_hdcp_execute_and_set(mod_hdcp_write_eks, + &input->eks_write, &status, + hdcp, "eks_write")) + goto out; +out: + return status; +} + +static enum mod_hdcp_status enable_encryption(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && + event_ctx->event != MOD_HDCP_EVENT_CPIRQ) { + event_ctx->unexpected_event = 1; + goto out; + } + if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) { + process_rxstatus(hdcp, event_ctx, input, &status); + goto out; + } + + if (is_hdmi_dvi_sl_hdcp(hdcp)) { + if (!process_rxstatus(hdcp, event_ctx, input, &status)) + goto out; + if (event_ctx->rx_id_list_ready) + goto out; + } + if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_enable_encryption, + &input->enable_encryption, &status, + hdcp, "enable_encryption")) + goto out; + if (is_dp_mst_hdcp(hdcp)) { + if (!mod_hdcp_execute_and_set( + mod_hdcp_hdcp2_enable_dp_stream_encryption, + &input->stream_encryption_dp, &status, + hdcp, "stream_encryption_dp")) + goto out; + } +out: + return status; +} + +static enum mod_hdcp_status authenticated(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && + event_ctx->event != MOD_HDCP_EVENT_CPIRQ) { + event_ctx->unexpected_event = 1; + goto out; + } + + process_rxstatus(hdcp, event_ctx, input, &status); +out: + return status; +} + +static enum mod_hdcp_status wait_for_rx_id_list(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && + event_ctx->event != MOD_HDCP_EVENT_CPIRQ && + event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { + event_ctx->unexpected_event = 1; + goto out; + } + + if (!process_rxstatus(hdcp, event_ctx, input, &status)) + goto out; + if (!event_ctx->rx_id_list_ready) { + status = MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_NOT_READY; + goto out; + } +out: + return status; +} + +static enum mod_hdcp_status verify_rx_id_list_and_send_ack(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && + event_ctx->event != MOD_HDCP_EVENT_CPIRQ) { + event_ctx->unexpected_event = 1; + goto out; + } + if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) { + process_rxstatus(hdcp, event_ctx, input, &status); + goto out; + } + + if (!mod_hdcp_execute_and_set(mod_hdcp_read_rx_id_list, + &input->rx_id_list_read, + &status, hdcp, "receiver_id_list_read")) + goto out; + if (!mod_hdcp_execute_and_set(check_device_count, + &input->device_count_check, + &status, hdcp, "device_count_check")) + goto out; + if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_rx_id_list, + &input->rx_id_list_validation, + &status, hdcp, "rx_id_list_validation")) + goto out; + if (!mod_hdcp_execute_and_set(mod_hdcp_write_repeater_auth_ack, + &input->repeater_auth_ack_write, + &status, hdcp, "repeater_auth_ack_write")) + goto out; +out: + return status; +} + +static enum mod_hdcp_status send_stream_management(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && + event_ctx->event != MOD_HDCP_EVENT_CPIRQ) { + event_ctx->unexpected_event = 1; + goto out; + } + if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) { + process_rxstatus(hdcp, event_ctx, input, &status); + goto out; + } + + if (is_hdmi_dvi_sl_hdcp(hdcp)) { + if (!process_rxstatus(hdcp, event_ctx, input, &status)) + goto out; + if (event_ctx->rx_id_list_ready) + goto out; + } + if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_stream_management, + &input->prepare_stream_manage, + &status, hdcp, "prepare_stream_manage")) + goto out; + + if (!mod_hdcp_execute_and_set(mod_hdcp_write_stream_manage, + &input->stream_manage_write, + &status, hdcp, "stream_manage_write")) + goto out; +out: + return status; +} + +static enum mod_hdcp_status validate_stream_ready(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && + event_ctx->event != MOD_HDCP_EVENT_CPIRQ && + event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) { + event_ctx->unexpected_event = 1; + goto out; + } + if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) { + process_rxstatus(hdcp, event_ctx, input, &status); + goto out; + } + + if (is_hdmi_dvi_sl_hdcp(hdcp)) { + if (!process_rxstatus(hdcp, event_ctx, input, &status)) + goto out; + if (event_ctx->rx_id_list_ready) { + goto out; + } + } + if (is_hdmi_dvi_sl_hdcp(hdcp)) + if (!mod_hdcp_execute_and_set(check_stream_ready_available, + &input->stream_ready_available, + &status, hdcp, "stream_ready_available")) + goto out; + if (!mod_hdcp_execute_and_set(mod_hdcp_read_stream_ready, + &input->stream_ready_read, + &status, hdcp, "stream_ready_read")) + goto out; + if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_stream_ready, + &input->stream_ready_validation, + &status, hdcp, "stream_ready_validation")) + goto out; + +out: + return status; +} + +static enum mod_hdcp_status determine_rx_hdcp_capable_dp(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) { + event_ctx->unexpected_event = 1; + goto out; + } + + if (!mod_hdcp_execute_and_set(mod_hdcp_read_rxcaps, + &input->rx_caps_read_dp, + &status, hdcp, "rx_caps_read_dp")) + goto out; + if (!mod_hdcp_execute_and_set(check_hdcp2_capable, + &input->hdcp2_capable_check, &status, + hdcp, "hdcp2_capable_check")) + goto out; +out: + return status; +} + +static enum mod_hdcp_status send_content_stream_type_dp(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK && + event_ctx->event != MOD_HDCP_EVENT_CPIRQ) { + event_ctx->unexpected_event = 1; + goto out; + } + + if (!process_rxstatus(hdcp, event_ctx, input, &status)) + goto out; + if (!mod_hdcp_execute_and_set(mod_hdcp_write_content_type, + &input->content_stream_type_write, &status, + hdcp, "content_stream_type_write")) + goto out; +out: + return status; +} + +enum mod_hdcp_status mod_hdcp_hdcp2_execution(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + switch (current_state(hdcp)) { + case H2_A0_KNOWN_HDCP2_CAPABLE_RX: + status = known_hdcp2_capable_rx(hdcp, event_ctx, input); + break; + case H2_A1_SEND_AKE_INIT: + status = send_ake_init(hdcp, event_ctx, input); + break; + case H2_A1_VALIDATE_AKE_CERT: + status = validate_ake_cert(hdcp, event_ctx, input); + break; + case H2_A1_SEND_NO_STORED_KM: + status = send_no_stored_km(hdcp, event_ctx, input); + break; + case H2_A1_READ_H_PRIME: + status = read_h_prime(hdcp, event_ctx, input); + break; + case H2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME: + status = read_pairing_info_and_validate_h_prime(hdcp, + event_ctx, input); + break; + case H2_A1_SEND_STORED_KM: + status = send_stored_km(hdcp, event_ctx, input); + break; + case H2_A1_VALIDATE_H_PRIME: + status = validate_h_prime(hdcp, event_ctx, input); + break; + case H2_A2_LOCALITY_CHECK: + status = locality_check(hdcp, event_ctx, input); + break; + case H2_A3_EXCHANGE_KS_AND_TEST_FOR_REPEATER: + status = exchange_ks_and_test_for_repeater(hdcp, event_ctx, input); + break; + case H2_ENABLE_ENCRYPTION: + status = enable_encryption(hdcp, event_ctx, input); + break; + case H2_A5_AUTHENTICATED: + status = authenticated(hdcp, event_ctx, input); + break; + case H2_A6_WAIT_FOR_RX_ID_LIST: + status = wait_for_rx_id_list(hdcp, event_ctx, input); + break; + case H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK: + status = verify_rx_id_list_and_send_ack(hdcp, event_ctx, input); + break; + case H2_A9_SEND_STREAM_MANAGEMENT: + status = send_stream_management(hdcp, event_ctx, input); + break; + case H2_A9_VALIDATE_STREAM_READY: + status = validate_stream_ready(hdcp, event_ctx, input); + break; + default: + status = MOD_HDCP_STATUS_INVALID_STATE; + break; + } + + return status; +} + +enum mod_hdcp_status mod_hdcp_hdcp2_dp_execution(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + struct mod_hdcp_transition_input_hdcp2 *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + switch (current_state(hdcp)) { + case D2_A0_DETERMINE_RX_HDCP_CAPABLE: + status = determine_rx_hdcp_capable_dp(hdcp, event_ctx, input); + break; + case D2_A1_SEND_AKE_INIT: + status = send_ake_init(hdcp, event_ctx, input); + break; + case D2_A1_VALIDATE_AKE_CERT: + status = validate_ake_cert(hdcp, event_ctx, input); + break; + case D2_A1_SEND_NO_STORED_KM: + status = send_no_stored_km(hdcp, event_ctx, input); + break; + case D2_A1_READ_H_PRIME: + status = read_h_prime(hdcp, event_ctx, input); + break; + case D2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME: + status = read_pairing_info_and_validate_h_prime(hdcp, + event_ctx, input); + break; + case D2_A1_SEND_STORED_KM: + status = send_stored_km(hdcp, event_ctx, input); + break; + case D2_A1_VALIDATE_H_PRIME: + status = validate_h_prime(hdcp, event_ctx, input); + break; + case D2_A2_LOCALITY_CHECK: + status = locality_check(hdcp, event_ctx, input); + break; + case D2_A34_EXCHANGE_KS_AND_TEST_FOR_REPEATER: + status = exchange_ks_and_test_for_repeater(hdcp, + event_ctx, input); + break; + case D2_SEND_CONTENT_STREAM_TYPE: + status = send_content_stream_type_dp(hdcp, event_ctx, input); + break; + case D2_ENABLE_ENCRYPTION: + status = enable_encryption(hdcp, event_ctx, input); + break; + case D2_A5_AUTHENTICATED: + status = authenticated(hdcp, event_ctx, input); + break; + case D2_A6_WAIT_FOR_RX_ID_LIST: + status = wait_for_rx_id_list(hdcp, event_ctx, input); + break; + case D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK: + status = verify_rx_id_list_and_send_ack(hdcp, event_ctx, input); + break; + case D2_A9_SEND_STREAM_MANAGEMENT: + status = send_stream_management(hdcp, event_ctx, input); + break; + case D2_A9_VALIDATE_STREAM_READY: + status = validate_stream_ready(hdcp, event_ctx, input); + break; + default: + status = MOD_HDCP_STATUS_INVALID_STATE; + break; + } + + return status; +} -- cgit v1.2.3