diff options
Diffstat (limited to 'lib/sprt/sprt_queue.c')
-rw-r--r-- | lib/sprt/sprt_queue.c | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/lib/sprt/sprt_queue.c b/lib/sprt/sprt_queue.c deleted file mode 100644 index 2bd4139ea4..0000000000 --- a/lib/sprt/sprt_queue.c +++ /dev/null @@ -1,104 +0,0 @@ -/* - * Copyright (c) 2018, Arm Limited. All rights reserved. - * - * SPDX-License-Identifier: BSD-3-Clause - */ - -#include <assert.h> -#include <errno.h> -#include <stdint.h> -#include <string.h> - -#include "sprt_queue.h" - -void sprt_queue_init(void *queue_base, uint32_t entry_num, uint32_t entry_size) -{ - assert(queue_base != NULL); - assert(entry_size > 0U); - assert(entry_num > 0U); - - struct sprt_queue *queue = (struct sprt_queue *)queue_base; - - queue->entry_num = entry_num; - queue->entry_size = entry_size; - queue->idx_write = 0U; - queue->idx_read = 0U; - - memset(queue->data, 0, entry_num * entry_size); -} - -int sprt_queue_is_empty(void *queue_base) -{ - assert(queue_base != NULL); - - struct sprt_queue *queue = (struct sprt_queue *)queue_base; - - return (queue->idx_write == queue->idx_read); -} - -int sprt_queue_is_full(void *queue_base) -{ - assert(queue_base != NULL); - - struct sprt_queue *queue = (struct sprt_queue *)queue_base; - - uint32_t idx_next_write = (queue->idx_write + 1) % queue->entry_num; - - return (idx_next_write == queue->idx_read); -} - -int sprt_queue_push(void *queue_base, const void *entry) -{ - assert(entry != NULL); - assert(queue_base != NULL); - - if (sprt_queue_is_full(queue_base) != 0) { - return -ENOMEM; - } - - struct sprt_queue *queue = (struct sprt_queue *)queue_base; - - uint8_t *dst_entry = &queue->data[queue->entry_size * queue->idx_write]; - - memcpy(dst_entry, entry, queue->entry_size); - - /* - * Make sure that the message data is visible before increasing the - * counter of available messages. - */ - __asm__ volatile("dmb st" ::: "memory"); - - queue->idx_write = (queue->idx_write + 1) % queue->entry_num; - - __asm__ volatile("dmb st" ::: "memory"); - - return 0; -} - -int sprt_queue_pop(void *queue_base, void *entry) -{ - assert(entry != NULL); - assert(queue_base != NULL); - - if (sprt_queue_is_empty(queue_base) != 0) { - return -ENOENT; - } - - struct sprt_queue *queue = (struct sprt_queue *)queue_base; - - uint8_t *src_entry = &queue->data[queue->entry_size * queue->idx_read]; - - memcpy(entry, src_entry, queue->entry_size); - - /* - * Make sure that the message data is visible before increasing the - * counter of read messages. - */ - __asm__ volatile("dmb st" ::: "memory"); - - queue->idx_read = (queue->idx_read + 1) % queue->entry_num; - - __asm__ volatile("dmb st" ::: "memory"); - - return 0; -} |