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Diffstat (limited to '')
| -rw-r--r-- | services/std_svc/spm/el3_spmc/spmc_shared_mem.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/services/std_svc/spm/el3_spmc/spmc_shared_mem.h b/services/std_svc/spm/el3_spmc/spmc_shared_mem.h new file mode 100644 index 0000000..839f7a1 --- /dev/null +++ b/services/std_svc/spm/el3_spmc/spmc_shared_mem.h @@ -0,0 +1,115 @@ +/* + * Copyright (c) 2022, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef SPMC_SHARED_MEM_H +#define SPMC_SHARED_MEM_H + +#include <services/el3_spmc_ffa_memory.h> + +/** + * struct ffa_mem_relinquish_descriptor - Relinquish request descriptor. + * @handle: + * Id of shared memory object to relinquish. + * @flags: + * If bit 0 is set clear memory after unmapping from borrower. Must be 0 + * for share. Bit[1]: Time slicing. Not supported, must be 0. All other + * bits are reserved 0. + * @endpoint_count: + * Number of entries in @endpoint_array. + * @endpoint_array: + * Array of endpoint ids. + */ +struct ffa_mem_relinquish_descriptor { + uint64_t handle; + uint32_t flags; + uint32_t endpoint_count; + ffa_endpoint_id16_t endpoint_array[]; +}; +CASSERT(sizeof(struct ffa_mem_relinquish_descriptor) == 16, + assert_ffa_mem_relinquish_descriptor_size_mismatch); + +/** + * struct spmc_shmem_obj_state - Global state. + * @data: Backing store for spmc_shmem_obj objects. + * @data_size: The size allocated for the backing store. + * @allocated: Number of bytes allocated in @data. + * @next_handle: Handle used for next allocated object. + * @lock: Lock protecting all state in this file. + */ +struct spmc_shmem_obj_state { + uint8_t *data; + size_t data_size; + size_t allocated; + uint64_t next_handle; + spinlock_t lock; +}; + +extern struct spmc_shmem_obj_state spmc_shmem_obj_state; +extern int plat_spmc_shmem_begin(struct ffa_mtd *desc); +extern int plat_spmc_shmem_reclaim(struct ffa_mtd *desc); + +long spmc_ffa_mem_send(uint32_t smc_fid, + bool secure_origin, + uint64_t total_length, + uint32_t fragment_length, + uint64_t address, + uint32_t page_count, + void *cookie, + void *handle, + uint64_t flags); + +long spmc_ffa_mem_frag_tx(uint32_t smc_fid, + bool secure_origin, + uint64_t handle_low, + uint64_t handle_high, + uint32_t fragment_length, + uint32_t sender_id, + void *cookie, + void *handle, + uint64_t flags); + +long spmc_ffa_mem_retrieve_req(uint32_t smc_fid, + bool secure_origin, + uint32_t total_length, + uint32_t fragment_length, + uint64_t address, + uint32_t page_count, + void *cookie, + void *handle, + uint64_t flags); + +long spmc_ffa_mem_frag_rx(uint32_t smc_fid, + bool secure_origin, + uint32_t handle_low, + uint32_t handle_high, + uint32_t fragment_offset, + uint32_t sender_id, + void *cookie, + void *handle, + uint64_t flags); + + +int spmc_ffa_mem_relinquish(uint32_t smc_fid, + bool secure_origin, + uint32_t handle_low, + uint32_t handle_high, + uint32_t fragment_offset, + uint32_t sender_id, + void *cookie, + void *handle, + uint64_t flags); + +int spmc_ffa_mem_reclaim(uint32_t smc_fid, + bool secure_origin, + uint32_t handle_low, + uint32_t handle_high, + uint32_t mem_flags, + uint64_t x4, + void *cookie, + void *handle, + uint64_t flags); + +#endif /* SPMC_SHARED_MEM_H */ |