| Varun Wadekar | b374103 | 2017-09-25 13:27:45 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #ifndef INTF_H |
| 8 | #define INTF_H |
| 9 | |
| 10 | /** |
| 11 | * Flags used in IPC req |
| 12 | */ |
| 13 | #define FLAG_DO_ACK (U(1) << 0) |
| 14 | #define FLAG_RING_DOORBELL (U(1) << 1) |
| 15 | |
| 16 | /* Bit 1 is designated for CCPlex in secure world */ |
| 17 | #define HSP_MASTER_CCPLEX_BIT (U(1) << 1) |
| 18 | /* Bit 19 is designated for BPMP in non-secure world */ |
| 19 | #define HSP_MASTER_BPMP_BIT (U(1) << 19) |
| 20 | /* Timeout to receive response from BPMP is 1 sec */ |
| 21 | #define TIMEOUT_RESPONSE_FROM_BPMP_US U(1000000) /* in microseconds */ |
| 22 | |
| 23 | /** |
| 24 | * IVC protocol defines and command/response frame |
| 25 | */ |
| 26 | |
| 27 | /** |
| 28 | * IVC specific defines |
| 29 | */ |
| 30 | #define IVC_CMD_SZ_BYTES U(128) |
| 31 | #define IVC_DATA_SZ_BYTES U(120) |
| 32 | |
| 33 | /** |
| 34 | * Holds frame data for an IPC request |
| 35 | */ |
| 36 | struct frame_data { |
| 37 | /* Identification as to what kind of data is being transmitted */ |
| 38 | uint32_t mrq; |
| 39 | |
| 40 | /* Flags for slave as to how to respond back */ |
| 41 | uint32_t flags; |
| 42 | |
| 43 | /* Actual data being sent */ |
| 44 | uint8_t data[IVC_DATA_SZ_BYTES]; |
| 45 | }; |
| 46 | |
| 47 | /** |
| 48 | * Commands send to the BPMP firmware |
| 49 | */ |
| 50 | |
| 51 | /** |
| 52 | * MRQ code to issue a module reset command to BPMP |
| 53 | */ |
| 54 | #define MRQ_RESET U(20) |
| 55 | |
| 56 | /** |
| 57 | * Reset sub-commands |
| 58 | */ |
| 59 | #define CMD_RESET_ASSERT U(1) |
| 60 | #define CMD_RESET_DEASSERT U(2) |
| 61 | #define CMD_RESET_MODULE U(3) |
| 62 | |
| 63 | /** |
| 64 | * Used by the sender of an #MRQ_RESET message to request BPMP to |
| 65 | * assert or deassert a given reset line. |
| 66 | */ |
| 67 | struct __attribute__((packed)) mrq_reset_request { |
| 68 | /* reset action to perform (mrq_reset_commands) */ |
| 69 | uint32_t cmd; |
| 70 | /* id of the reset to affected */ |
| 71 | uint32_t reset_id; |
| 72 | }; |
| 73 | |
| 74 | #endif /* INTF_H */ |