Kévin Redon | c94e0fc | 2019-03-07 19:15:29 +0100 | [diff] [blame] | 1 | /** |
| 2 | * \file |
| 3 | * |
| 4 | * \brief Memory with DMA functionality implementation. |
| 5 | * |
| 6 | * Copyright (c) 2016-2018 Microchip Technology Inc. and its subsidiaries. |
| 7 | * |
| 8 | * \asf_license_start |
| 9 | * |
| 10 | * \page License |
| 11 | * |
| 12 | * Subject to your compliance with these terms, you may use Microchip |
| 13 | * software and any derivatives exclusively with Microchip products. |
| 14 | * It is your responsibility to comply with third party license terms applicable |
| 15 | * to your use of third party software (including open source software) that |
| 16 | * may accompany Microchip software. |
| 17 | * |
| 18 | * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, |
| 19 | * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, |
| 20 | * INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, |
| 21 | * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE |
| 22 | * LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL |
| 23 | * LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE |
| 24 | * SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE |
| 25 | * POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT |
| 26 | * ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY |
| 27 | * RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY, |
| 28 | * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE. |
| 29 | * |
| 30 | * \asf_license_stop |
| 31 | * |
| 32 | */ |
| 33 | |
| 34 | #include "dma_memory.h" |
| 35 | #include "dma_memory_config.h" |
| 36 | #include <utils_assert.h> |
| 37 | #include <utils.h> |
| 38 | #include <hal_atomic.h> |
| 39 | |
| 40 | /** |
| 41 | * \brief Driver version |
| 42 | */ |
| 43 | #define DRIVER_VERSION 0x00000001u |
| 44 | |
| 45 | /** |
| 46 | * \brief memory with dma descriptor instance |
| 47 | */ |
| 48 | static struct dma_memory_descriptor descr; |
| 49 | |
| 50 | /** |
| 51 | * \internal Process transfer done interrupts |
| 52 | * |
| 53 | * \param[in] resource The pointer to memory resource |
| 54 | */ |
| 55 | static void dma_transfer_done(struct _dma_resource *resource) |
| 56 | { |
| 57 | (void)resource; |
| 58 | if (descr.memory_cb.complete) { |
| 59 | descr.memory_cb.complete(); |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * \internal Process transfer error interrupts |
| 65 | * |
| 66 | * \param[in] resource The pointer to memory resource |
| 67 | */ |
| 68 | static void dma_memory_error(struct _dma_resource *resource) |
| 69 | { |
| 70 | (void)resource; |
| 71 | if (descr.memory_cb.error) { |
| 72 | descr.memory_cb.error(); |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | /** |
| 77 | * \brief Initialize DMA |
| 78 | */ |
| 79 | int32_t dma_memory_init(void) |
| 80 | { |
| 81 | _dma_get_channel_resource(&descr.resource, CONF_DMA_MEMORY_CHANNEL); |
| 82 | descr.resource->dma_cb.transfer_done = dma_transfer_done; |
| 83 | descr.resource->dma_cb.error = dma_memory_error; |
| 84 | |
| 85 | return ERR_NONE; |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * \brief Register DMA callback |
| 90 | */ |
| 91 | int32_t dma_memory_register_callback(const enum dma_memory_callback_type type, dma_memory_cb_t cb) |
| 92 | { |
| 93 | switch (type) { |
| 94 | case DMA_MEMORY_COMPLETE_CB: |
| 95 | descr.memory_cb.complete = cb; |
| 96 | break; |
| 97 | |
| 98 | case DMA_MEMORY_ERROR_CB: |
| 99 | descr.memory_cb.error = cb; |
| 100 | break; |
| 101 | |
| 102 | default: |
| 103 | return ERR_INVALID_ARG; |
| 104 | } |
| 105 | |
| 106 | _dma_set_irq_state(CONF_DMA_MEMORY_CHANNEL, (enum _dma_callback_type)type, (cb != NULL)); |
| 107 | |
| 108 | return ERR_NONE; |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * \brief Memory copy with dma |
| 113 | */ |
| 114 | int32_t dma_memcpy(void *dst, void *src, uint32_t size) |
| 115 | { |
| 116 | _dma_srcinc_enable(CONF_DMA_MEMORY_CHANNEL, true); |
| 117 | _dma_dstinc_enable(CONF_DMA_MEMORY_CHANNEL, true); |
| 118 | _dma_set_destination_address(CONF_DMA_MEMORY_CHANNEL, dst); |
| 119 | _dma_set_source_address(CONF_DMA_MEMORY_CHANNEL, src); |
| 120 | _dma_set_data_amount(CONF_DMA_MEMORY_CHANNEL, size); |
| 121 | _dma_enable_transaction(CONF_DMA_MEMORY_CHANNEL, true); |
| 122 | |
| 123 | return ERR_NONE; |
| 124 | } |
| 125 | |
| 126 | /** |
| 127 | * \brief Memory set with dma |
| 128 | */ |
| 129 | int32_t dma_memset(void *dst, int32_t ch, uint32_t size) |
| 130 | { |
| 131 | static int32_t tmp_ch; |
| 132 | |
| 133 | tmp_ch = ch; |
| 134 | |
| 135 | _dma_set_source_address(CONF_DMA_MEMORY_CHANNEL, &tmp_ch); |
| 136 | _dma_srcinc_enable(CONF_DMA_MEMORY_CHANNEL, false); |
| 137 | _dma_dstinc_enable(CONF_DMA_MEMORY_CHANNEL, true); |
| 138 | _dma_set_destination_address(CONF_DMA_MEMORY_CHANNEL, dst); |
| 139 | _dma_set_data_amount(CONF_DMA_MEMORY_CHANNEL, size); |
| 140 | _dma_enable_transaction(CONF_DMA_MEMORY_CHANNEL, true); |
| 141 | |
| 142 | return ERR_NONE; |
| 143 | } |