1 /* Copyright (c) 2022 Intel Corporation 2 * SPDX-License-Identifier: Apache-2.0 3 */ 4 #ifndef ZEPHYR_SOC_INTEL_ADSP_ACE_IPC_REGS_H 5 #define ZEPHYR_SOC_INTEL_ADSP_ACE_IPC_REGS_H 6 7 #include <intel_adsp_ipc.h> 8 #include <intel_adsp_ipc_devtree.h> 9 10 /** 11 * @file 12 * 13 * Inter Processor Communication - used for sending interrupts to and receiving 14 * them from another device. ACE uses it to talk to the host and the CSME. 15 * In general there is one of these blocks instantiated for each endpoint of a 16 * connection. 17 */ 18 19 /** 20 * @brief IPC registers layout for Intel ADSP ACE1X SoC family. 21 */ 22 struct intel_adsp_ipc { 23 uint32_t tdr; 24 uint32_t tda; 25 uint32_t unused0[2]; 26 uint32_t idr; 27 uint32_t ida; 28 uint32_t unused1[2]; 29 uint32_t cst; 30 uint32_t csr; 31 uint32_t ctl; 32 uint32_t cap; 33 uint32_t unused2[52]; 34 uint32_t tdd; 35 uint32_t unused3[31]; 36 uint32_t idd; 37 }; 38 39 #define INTEL_ADSP_IPC_BUSY BIT(31) 40 #define INTEL_ADSP_IPC_DONE BIT(31) 41 42 /** 43 * @brief Clear TDA busy bit. 44 * 45 * On ACE SoC family boards TDA bit 31 (BUSY) during IPC doorbell acknowledgment 46 * must be cleared (!), not set (in contrary to CAVS SoC family boards). 47 * This clears BUSY on the other side of the connection in IDR register. 48 */ 49 #define INTEL_ADSP_IPC_ACE1X_TDA_DONE 0 50 51 #define INTEL_ADSP_IPC_CTL_TBIE BIT(0) 52 #define INTEL_ADSP_IPC_CTL_IDIE BIT(1) 53 /** 54 * @brief ACE SoC family Intra DSP Communication. 55 * 56 * ACE SoC platform family provides an array of IPC endpoints to be used for 57 * peer-to-peer communication between DSP cores - master to slave and backwards. 58 * Given endpoint can be accessed by: 59 * @code 60 * IDC[slave_core_id].agents[agent_id].ipc; 61 * @endcode 62 */ 63 struct ace_idc { 64 /** 65 * @brief IPC Agent Endpoints. 66 * 67 * Each connection is organized into two "agents" ("A" - master core and "B" - slave core). 68 * Each agent is wired to its own interrupt. 69 * Agents array represents mutually exclusive IPC endpoint access: 70 * (A=1/B=0) - agents[0]. 71 * (A=0/B=1) - agents[1]. 72 */ 73 union { 74 int8_t unused[512]; 75 struct intel_adsp_ipc ipc; 76 } agents[2]; 77 }; 78 79 /** 80 * @brief Defines register for intra DSP communication. 81 */ 82 #define IDC ((volatile struct ace_idc *)INTEL_ADSP_IDC_REG_ADDRESS) 83 84 #endif /* ZEPHYR_SOC_INTEL_ADSP_ACE_IPC_REGS_H */ 85
