Daiki Kato / mbed-os-lychee

mbed-os for GR-LYCHEE

Dependents:   mbed-os-example-blinky-gr-lychee GR-Boads_Camera_sample GR-Boards_Audio_Recoder GR-Boads_Camera_DisplayApp ... more

features/FEATURE_LWIP/lwip-interface/emac_stack_lwip.cpp@0:f782d9c66c49, 2018-02-02 (annotated)

Committer:
dkato
Date:
Fri Feb 02 05:42:23 2018 +0000
Revision:
0:f782d9c66c49
mbed-os for GR-LYCHEE

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dkato 0:f782d9c66c49 1 /* mbed Microcontroller Library
dkato 0:f782d9c66c49 2 * Copyright (c) 2016 ARM Limited
dkato 0:f782d9c66c49 3 *
dkato 0:f782d9c66c49 4 * Licensed under the Apache License, Version 2.0 (the "License");
dkato 0:f782d9c66c49 5 * you may not use this file except in compliance with the License.
dkato 0:f782d9c66c49 6 * You may obtain a copy of the License at
dkato 0:f782d9c66c49 7 *
dkato 0:f782d9c66c49 8 * http://www.apache.org/licenses/LICENSE-2.0
dkato 0:f782d9c66c49 9 *
dkato 0:f782d9c66c49 10 * Unless required by applicable law or agreed to in writing, software
dkato 0:f782d9c66c49 11 * distributed under the License is distributed on an "AS IS" BASIS,
dkato 0:f782d9c66c49 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
dkato 0:f782d9c66c49 13 * See the License for the specific language governing permissions and
dkato 0:f782d9c66c49 14 * limitations under the License.
dkato 0:f782d9c66c49 15 */
dkato 0:f782d9c66c49 16
dkato 0:f782d9c66c49 17 #if DEVICE_EMAC
dkato 0:f782d9c66c49 18
dkato 0:f782d9c66c49 19 #include "emac_stack_mem.h"
dkato 0:f782d9c66c49 20 #include "pbuf.h"
dkato 0:f782d9c66c49 21
dkato 0:f782d9c66c49 22 emac_stack_mem_t *emac_stack_mem_alloc(emac_stack_t* stack, uint32_t size, uint32_t align)
dkato 0:f782d9c66c49 23 {
dkato 0:f782d9c66c49 24
dkato 0:f782d9c66c49 25 struct pbuf *pbuf = pbuf_alloc(PBUF_RAW, size + align, PBUF_RAM);
dkato 0:f782d9c66c49 26 if (pbuf == NULL) {
dkato 0:f782d9c66c49 27 return NULL;
dkato 0:f782d9c66c49 28 }
dkato 0:f782d9c66c49 29
dkato 0:f782d9c66c49 30 if (align) {
dkato 0:f782d9c66c49 31 uint32_t remainder = (uint32_t)pbuf->payload % align;
dkato 0:f782d9c66c49 32 uint32_t offset = align - remainder;
dkato 0:f782d9c66c49 33 if (offset >= align) {
dkato 0:f782d9c66c49 34 offset = align;
dkato 0:f782d9c66c49 35 }
dkato 0:f782d9c66c49 36
dkato 0:f782d9c66c49 37 pbuf->payload = (void*)((char*)pbuf->payload + offset);
dkato 0:f782d9c66c49 38 pbuf->tot_len -= offset;
dkato 0:f782d9c66c49 39 pbuf->len -= offset;
dkato 0:f782d9c66c49 40 }
dkato 0:f782d9c66c49 41
dkato 0:f782d9c66c49 42 return (emac_stack_mem_t*)pbuf;
dkato 0:f782d9c66c49 43 }
dkato 0:f782d9c66c49 44
dkato 0:f782d9c66c49 45 void emac_stack_mem_free(emac_stack_t* stack, emac_stack_mem_t *mem)
dkato 0:f782d9c66c49 46 {
dkato 0:f782d9c66c49 47 pbuf_free((struct pbuf*)mem);
dkato 0:f782d9c66c49 48 }
dkato 0:f782d9c66c49 49
dkato 0:f782d9c66c49 50 void emac_stack_mem_copy(emac_stack_t* stack, emac_stack_mem_t *to, emac_stack_mem_t *from)
dkato 0:f782d9c66c49 51 {
dkato 0:f782d9c66c49 52 pbuf_copy((struct pbuf*)to, (struct pbuf*)from);
dkato 0:f782d9c66c49 53 }
dkato 0:f782d9c66c49 54
dkato 0:f782d9c66c49 55 void *emac_stack_mem_ptr(emac_stack_t* stack, emac_stack_mem_t *mem)
dkato 0:f782d9c66c49 56 {
dkato 0:f782d9c66c49 57 return ((struct pbuf*)mem)->payload;
dkato 0:f782d9c66c49 58 }
dkato 0:f782d9c66c49 59
dkato 0:f782d9c66c49 60 uint32_t emac_stack_mem_len(emac_stack_t* stack, emac_stack_mem_t *mem)
dkato 0:f782d9c66c49 61 {
dkato 0:f782d9c66c49 62 return ((struct pbuf*)mem)->len;
dkato 0:f782d9c66c49 63 }
dkato 0:f782d9c66c49 64
dkato 0:f782d9c66c49 65 void emac_stack_mem_set_len(emac_stack_t* stack, emac_stack_mem_t *mem, uint32_t len)
dkato 0:f782d9c66c49 66 {
dkato 0:f782d9c66c49 67 struct pbuf *pbuf = (struct pbuf*)mem;
dkato 0:f782d9c66c49 68
dkato 0:f782d9c66c49 69 pbuf->len = len;
dkato 0:f782d9c66c49 70 }
dkato 0:f782d9c66c49 71
dkato 0:f782d9c66c49 72 emac_stack_mem_t *emac_stack_mem_chain_dequeue(emac_stack_t* stack, emac_stack_mem_chain_t **chain)
dkato 0:f782d9c66c49 73 {
dkato 0:f782d9c66c49 74 struct pbuf **list = (struct pbuf**)chain;
dkato 0:f782d9c66c49 75 struct pbuf *head = *list;
dkato 0:f782d9c66c49 76 *list = (*list)->next;
dkato 0:f782d9c66c49 77
dkato 0:f782d9c66c49 78 return (emac_stack_mem_t *)head;
dkato 0:f782d9c66c49 79 }
dkato 0:f782d9c66c49 80
dkato 0:f782d9c66c49 81 uint32_t emac_stack_mem_chain_len(emac_stack_t* stack, emac_stack_mem_chain_t *chain)
dkato 0:f782d9c66c49 82 {
dkato 0:f782d9c66c49 83 return ((struct pbuf*)chain)->tot_len;
dkato 0:f782d9c66c49 84 }
dkato 0:f782d9c66c49 85
dkato 0:f782d9c66c49 86 void emac_stack_mem_ref(emac_stack_t* stack, emac_stack_mem_t *mem)
dkato 0:f782d9c66c49 87 {
dkato 0:f782d9c66c49 88 pbuf_ref((struct pbuf*)mem);
dkato 0:f782d9c66c49 89 }
dkato 0:f782d9c66c49 90
dkato 0:f782d9c66c49 91 #endif /* DEVICE_EMAC */