| /* |
| * Copyright (C) 2018 Marvell International Ltd. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| * https://spdx.org/licenses |
| */ |
| |
| #ifndef __PM_IPC_DRV_H |
| #define __PM_IPC_DRV_H |
| |
| #include <psci.h> |
| |
| #define MV_PM_FW_IPC_VERSION_MAGIC (0xCA530000) /* Do NOT change */ |
| /* Increament for each version */ |
| #define MV_PM_FW_IPC_VERSION_SEQ (0x00000001) |
| #define MV_PM_FW_IPC_VERSION (MV_PM_FW_IPC_VERSION_MAGIC | \ |
| MV_PM_FW_IPC_VERSION_SEQ) |
| |
| #define IPC_MSG_STATE_LOC (0x0) |
| #define IPC_MSG_SYNC_ID_LOC (0x4) |
| #define IPC_MSG_ID_LOC (0x8) |
| #define IPC_MSG_RET_CH_ID_LOC (0xC) |
| #define IPC_MSG_CPU_ID_LOC (0x10) |
| #define IPC_MSG_CLUSTER_ID_LOC (0x14) |
| #define IPC_MSG_SYSTEM_ID_LOC (0x18) |
| #define IPC_MSG_POWER_STATE_LOC (0x1C) |
| #define IPC_MSG_REPLY_LOC (0x20) |
| #define IPC_MSG_RESERVED_LOC (0x24) |
| |
| /* IPC initialization state */ |
| enum mss_pm_ipc_init_state { |
| IPC_UN_INITIALIZED = 1, |
| IPC_INITIALIZED = 2 |
| }; |
| |
| /* IPC queue direction */ |
| enum mss_pm_ipc_init_msg_dir { |
| IPC_MSG_TX = 0, |
| IPC_MSG_RX = 1 |
| }; |
| |
| /* IPC message state */ |
| enum mss_pm_ipc_msg_state { |
| IPC_MSG_FREE = 1, |
| IPC_MSG_OCCUPY = 2 |
| |
| }; |
| |
| /* IPC control block */ |
| struct mss_pm_ipc_ctrl { |
| unsigned int ctrl_base_address; |
| unsigned int msg_base_address; |
| unsigned int num_of_channels; |
| unsigned int channel_size; |
| unsigned int queue_size; |
| }; |
| |
| /* IPC message types */ |
| enum mss_pm_msg_id { |
| PM_IPC_MSG_CPU_SUSPEND = 1, |
| PM_IPC_MSG_CPU_OFF = 2, |
| PM_IPC_MSG_CPU_ON = 3, |
| PM_IPC_MSG_SYSTEM_RESET = 4, |
| PM_IPC_MSG_SYSTEM_SUSPEND = 5, |
| PM_IPC_MAX_MSG |
| }; |
| |
| struct mss_pm_ipc_msg { |
| unsigned int msg_sync_id; /* |
| * Sync number, validate message |
| * reply corresponding to message |
| * received |
| */ |
| unsigned int msg_id; /* Message Id */ |
| unsigned int ret_channel_id; /* IPC channel reply */ |
| unsigned int cpu_id; /* CPU Id */ |
| unsigned int cluster_id; /* Cluster Id */ |
| unsigned int system_id; /* System Id */ |
| unsigned int power_state; |
| unsigned int msg_reply; /* Message reply */ |
| }; |
| |
| /* IPC queue */ |
| struct mss_pm_ipc_queue { |
| unsigned int state; |
| struct mss_pm_ipc_msg msg; |
| }; |
| |
| /* IPC channel */ |
| struct mss_pm_ipc_ch { |
| struct mss_pm_ipc_queue *tx_queue; |
| struct mss_pm_ipc_queue *rx_queue; |
| }; |
| |
| /***************************************************************************** |
| * mv_pm_ipc_init |
| * |
| * DESCRIPTION: Initialize PM IPC infrastructure |
| ***************************************************************************** |
| */ |
| int mv_pm_ipc_init(unsigned long ipc_control_addr); |
| |
| /***************************************************************************** |
| * mv_pm_ipc_msg_rx |
| * |
| * DESCRIPTION: Retrieve message from IPC channel |
| ***************************************************************************** |
| */ |
| int mv_pm_ipc_msg_rx(unsigned int channel_id, struct mss_pm_ipc_msg *msg); |
| |
| /***************************************************************************** |
| * mv_pm_ipc_msg_tx |
| * |
| * DESCRIPTION: Send message via IPC channel |
| ***************************************************************************** |
| */ |
| int mv_pm_ipc_msg_tx(unsigned int channel_id, unsigned int msg_id, |
| unsigned int cluster_power_state); |
| |
| #endif /* __PM_IPC_DRV_H */ |
