| Shruti Gupta | 9110508 | 2024-11-27 05:29:55 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2024, Arm Limited. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | * |
| 6 | */ |
| 7 | #ifndef REALM_PSI_H |
| 8 | #define REALM_PSI_H |
| 9 | |
| 10 | #include <stdint.h> |
| 11 | #include <realm_rsi.h> |
| 12 | |
| 13 | /* |
| 14 | * Plane Service Interface |
| 15 | * ABIs are designed to be used by auxillary planes to interact with primary plane. |
| 16 | * PSI calls uses HVC conduit which causes Plane exit to P0 |
| 17 | * PSI commands and Planes shared buffer can be used for communication. |
| 18 | */ |
| 19 | #define PSI_RETURN_TO_P0 1U |
| 20 | #define PSI_RETURN_TO_PN 2U |
| 21 | |
| 22 | /* PSI Commands to return back to P0 */ |
| 23 | #define PSI_P0_CALL RSI_HOST_CALL |
| 24 | #define PSI_REALM_CONFIG RSI_REALM_CONFIG |
| 25 | #define PSI_CALL_EXIT_PRINT_CMD HOST_CALL_EXIT_PRINT_CMD |
| 26 | #define PSI_CALL_EXIT_SUCCESS_CMD HOST_CALL_EXIT_SUCCESS_CMD |
| 27 | #define PSI_CALL_EXIT_FAILED_CMD HOST_CALL_EXIT_FAILED_CMD |
| 28 | #define PSI_CALL_GET_PLANE_ID_CMD HOST_CALL_GET_PLANE_ID_CMD |
| 29 | #define PSI_CALL_GET_SHARED_BUFF_CMD HOST_CALL_GET_SHARED_BUFF_CMD |
| 30 | |
| 31 | /* Exit back to Plane 0 */ |
| 32 | void psi_exit_to_plane0(u_register_t psi_cmd, |
| 33 | u_register_t arg1, |
| 34 | u_register_t arg2, |
| 35 | u_register_t arg3, |
| 36 | u_register_t arg4, |
| 37 | u_register_t arg5, |
| 38 | u_register_t arg6, |
| 39 | u_register_t arg7); |
| 40 | |
| 41 | /* Request plane_id from P0 */ |
| 42 | u_register_t psi_get_plane_id(void); |
| 43 | |
| 44 | #endif /* REALM_PSI_H */ |