| /** |
| * \file |
| * |
| * \brief Memory with DMA functionality implementation. |
| * |
| * Copyright (c) 2016-2018 Microchip Technology Inc. and its subsidiaries. |
| * |
| * \asf_license_start |
| * |
| * \page License |
| * |
| * Subject to your compliance with these terms, you may use Microchip |
| * software and any derivatives exclusively with Microchip products. |
| * It is your responsibility to comply with third party license terms applicable |
| * to your use of third party software (including open source software) that |
| * may accompany Microchip software. |
| * |
| * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, |
| * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, |
| * INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, |
| * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE |
| * LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL |
| * LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE |
| * SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE |
| * POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT |
| * ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY |
| * RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY, |
| * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE. |
| * |
| * \asf_license_stop |
| * |
| */ |
| |
| #include "dma_memory.h" |
| #include "dma_memory_config.h" |
| #include <utils_assert.h> |
| #include <utils.h> |
| #include <hal_atomic.h> |
| |
| /** |
| * \brief Driver version |
| */ |
| #define DRIVER_VERSION 0x00000001u |
| |
| /** |
| * \brief memory with dma descriptor instance |
| */ |
| static struct dma_memory_descriptor descr; |
| |
| /** |
| * \internal Process transfer done interrupts |
| * |
| * \param[in] resource The pointer to memory resource |
| */ |
| static void dma_transfer_done(struct _dma_resource *resource) |
| { |
| (void)resource; |
| if (descr.memory_cb.complete) { |
| descr.memory_cb.complete(); |
| } |
| } |
| |
| /** |
| * \internal Process transfer error interrupts |
| * |
| * \param[in] resource The pointer to memory resource |
| */ |
| static void dma_memory_error(struct _dma_resource *resource) |
| { |
| (void)resource; |
| if (descr.memory_cb.error) { |
| descr.memory_cb.error(); |
| } |
| } |
| |
| /** |
| * \brief Initialize DMA |
| */ |
| int32_t dma_memory_init(void) |
| { |
| _dma_get_channel_resource(&descr.resource, CONF_DMA_MEMORY_CHANNEL); |
| descr.resource->dma_cb.transfer_done = dma_transfer_done; |
| descr.resource->dma_cb.error = dma_memory_error; |
| |
| return ERR_NONE; |
| } |
| |
| /** |
| * \brief Register DMA callback |
| */ |
| int32_t dma_memory_register_callback(const enum dma_memory_callback_type type, dma_memory_cb_t cb) |
| { |
| switch (type) { |
| case DMA_MEMORY_COMPLETE_CB: |
| descr.memory_cb.complete = cb; |
| break; |
| |
| case DMA_MEMORY_ERROR_CB: |
| descr.memory_cb.error = cb; |
| break; |
| |
| default: |
| return ERR_INVALID_ARG; |
| } |
| |
| _dma_set_irq_state(CONF_DMA_MEMORY_CHANNEL, (enum _dma_callback_type)type, (cb != NULL)); |
| |
| return ERR_NONE; |
| } |
| |
| /** |
| * \brief Memory copy with dma |
| */ |
| int32_t dma_memcpy(void *dst, void *src, uint32_t size) |
| { |
| _dma_srcinc_enable(CONF_DMA_MEMORY_CHANNEL, true); |
| _dma_dstinc_enable(CONF_DMA_MEMORY_CHANNEL, true); |
| _dma_set_destination_address(CONF_DMA_MEMORY_CHANNEL, dst); |
| _dma_set_source_address(CONF_DMA_MEMORY_CHANNEL, src); |
| _dma_set_data_amount(CONF_DMA_MEMORY_CHANNEL, size); |
| _dma_enable_transaction(CONF_DMA_MEMORY_CHANNEL, true); |
| |
| return ERR_NONE; |
| } |
| |
| /** |
| * \brief Memory set with dma |
| */ |
| int32_t dma_memset(void *dst, int32_t ch, uint32_t size) |
| { |
| static int32_t tmp_ch; |
| |
| tmp_ch = ch; |
| |
| _dma_set_source_address(CONF_DMA_MEMORY_CHANNEL, &tmp_ch); |
| _dma_srcinc_enable(CONF_DMA_MEMORY_CHANNEL, false); |
| _dma_dstinc_enable(CONF_DMA_MEMORY_CHANNEL, true); |
| _dma_set_destination_address(CONF_DMA_MEMORY_CHANNEL, dst); |
| _dma_set_data_amount(CONF_DMA_MEMORY_CHANNEL, size); |
| _dma_enable_transaction(CONF_DMA_MEMORY_CHANNEL, true); |
| |
| return ERR_NONE; |
| } |