| Marc Bonnici | 9f23c8d | 2021-10-01 16:06:04 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2022, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #ifndef SPMC_SHARED_MEM_H |
| 8 | #define SPMC_SHARED_MEM_H |
| 9 | |
| 10 | #include <services/el3_spmc_ffa_memory.h> |
| 11 | |
| 12 | /** |
| 13 | * struct ffa_mem_relinquish_descriptor - Relinquish request descriptor. |
| 14 | * @handle: |
| 15 | * Id of shared memory object to relinquish. |
| 16 | * @flags: |
| 17 | * If bit 0 is set clear memory after unmapping from borrower. Must be 0 |
| 18 | * for share. Bit[1]: Time slicing. Not supported, must be 0. All other |
| 19 | * bits are reserved 0. |
| 20 | * @endpoint_count: |
| 21 | * Number of entries in @endpoint_array. |
| 22 | * @endpoint_array: |
| 23 | * Array of endpoint ids. |
| 24 | */ |
| 25 | struct ffa_mem_relinquish_descriptor { |
| 26 | uint64_t handle; |
| 27 | uint32_t flags; |
| 28 | uint32_t endpoint_count; |
| 29 | ffa_endpoint_id16_t endpoint_array[]; |
| 30 | }; |
| 31 | CASSERT(sizeof(struct ffa_mem_relinquish_descriptor) == 16, |
| 32 | assert_ffa_mem_relinquish_descriptor_size_mismatch); |
| 33 | |
| 34 | /** |
| 35 | * struct spmc_shmem_obj_state - Global state. |
| 36 | * @data: Backing store for spmc_shmem_obj objects. |
| 37 | * @data_size: The size allocated for the backing store. |
| 38 | * @allocated: Number of bytes allocated in @data. |
| 39 | * @next_handle: Handle used for next allocated object. |
| 40 | * @lock: Lock protecting all state in this file. |
| 41 | */ |
| 42 | struct spmc_shmem_obj_state { |
| 43 | uint8_t *data; |
| 44 | size_t data_size; |
| 45 | size_t allocated; |
| 46 | uint64_t next_handle; |
| 47 | spinlock_t lock; |
| 48 | }; |
| 49 | |
| 50 | extern struct spmc_shmem_obj_state spmc_shmem_obj_state; |
| 51 | |
| 52 | long spmc_ffa_mem_send(uint32_t smc_fid, |
| 53 | bool secure_origin, |
| 54 | uint64_t total_length, |
| 55 | uint32_t fragment_length, |
| 56 | uint64_t address, |
| 57 | uint32_t page_count, |
| 58 | void *cookie, |
| 59 | void *handle, |
| 60 | uint64_t flags); |
| 61 | |
| 62 | long spmc_ffa_mem_frag_tx(uint32_t smc_fid, |
| 63 | bool secure_origin, |
| 64 | uint64_t handle_low, |
| 65 | uint64_t handle_high, |
| 66 | uint32_t fragment_length, |
| 67 | uint32_t sender_id, |
| 68 | void *cookie, |
| 69 | void *handle, |
| 70 | uint64_t flags); |
| 71 | |
| 72 | long spmc_ffa_mem_retrieve_req(uint32_t smc_fid, |
| 73 | bool secure_origin, |
| 74 | uint32_t total_length, |
| 75 | uint32_t fragment_length, |
| 76 | uint64_t address, |
| 77 | uint32_t page_count, |
| 78 | void *cookie, |
| 79 | void *handle, |
| 80 | uint64_t flags); |
| 81 | |
| 82 | long spmc_ffa_mem_frag_rx(uint32_t smc_fid, |
| 83 | bool secure_origin, |
| 84 | uint32_t handle_low, |
| 85 | uint32_t handle_high, |
| 86 | uint32_t fragment_offset, |
| 87 | uint32_t sender_id, |
| 88 | void *cookie, |
| 89 | void *handle, |
| 90 | uint64_t flags); |
| 91 | |
| 92 | |
| 93 | int spmc_ffa_mem_relinquish(uint32_t smc_fid, |
| 94 | bool secure_origin, |
| 95 | uint32_t handle_low, |
| 96 | uint32_t handle_high, |
| 97 | uint32_t fragment_offset, |
| 98 | uint32_t sender_id, |
| 99 | void *cookie, |
| 100 | void *handle, |
| 101 | uint64_t flags); |
| 102 | |
| 103 | int spmc_ffa_mem_reclaim(uint32_t smc_fid, |
| 104 | bool secure_origin, |
| 105 | uint32_t handle_low, |
| 106 | uint32_t handle_high, |
| 107 | uint32_t mem_flags, |
| 108 | uint64_t x4, |
| 109 | void *cookie, |
| 110 | void *handle, |
| 111 | uint64_t flags); |
| 112 | |
| 113 | #endif /* SPMC_SHARED_MEM_H */ |