rt-thread/bsp/allwinner/libraries/sunxi-hal/hal/test/dma/test_dma.c

/*
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*
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* the the people's Republic of China and other countries.
* All Allwinner Technology Co.,Ltd. trademarks are used with permission.
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*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <hal_log.h>
#include <hal_cmd.h>
#include <hal_mem.h>
#include <hal_cache.h>
#include <hal_dma.h>

#define DMA_TEST_LEN    1024
static void dma_test_cb(void *param)
{
    hal_log_info("DMA finished, callback to do something...\n");
}

int cmd_test_dma(int argc, char **argv)
{
    int ret, i;
    struct sunxi_dma_chan *hdma = NULL;
    char *buf1 = NULL,*buf2 = NULL;
    struct dma_slave_config config = {0};
    uint32_t size = 0;

    hal_log_info("run in dma test");

    buf2 = hal_malloc(DMA_TEST_LEN);
    buf1 = hal_malloc(DMA_TEST_LEN);

    if (buf1 == NULL) {
        hal_log_err("malloc buf1 error!");
        goto end;
    }

    if (buf2 == NULL) {
        hal_log_err("malloc buf2 error!");
        goto end;
    }

    memset(buf1, 0, DMA_TEST_LEN);
    memset(buf2, 0, DMA_TEST_LEN);

    for (i = 0;i < DMA_TEST_LEN; i++)
        buf1[i] = i & 0xff;

    hal_dcache_clean_all();

    /* request dma chan */
    ret = hal_dma_chan_request(&hdma);
    if (ret == HAL_DMA_CHAN_STATUS_BUSY) {
        hal_log_err("dma channel busy!");
        goto end;
    }

    /* register dma callback */
    ret = hal_dma_callback_install(hdma, dma_test_cb, hdma);
    if (ret != HAL_DMA_STATUS_OK) {
        hal_log_err("register dma callback failed!");
        goto end;
    }

    config.direction = DMA_MEM_TO_MEM;
    config.dst_addr_width = DMA_SLAVE_BUSWIDTH_8_BYTES;
    config.src_addr_width = DMA_SLAVE_BUSWIDTH_8_BYTES;
    config.dst_maxburst = DMA_SLAVE_BURST_16;
    config.src_maxburst = DMA_SLAVE_BURST_16;
    config.slave_id = sunxi_slave_id(DRQDST_SDRAM, DRQSRC_SDRAM);

    ret = hal_dma_slave_config(hdma, &config);

    if (ret != HAL_DMA_STATUS_OK) {
        hal_log_err("dma config error, ret:%d", ret);
        goto end;
    }

    ret = hal_dma_prep_memcpy(hdma, (uint32_t)buf2, (uint32_t)buf1, DMA_TEST_LEN);
    if (ret != HAL_DMA_STATUS_OK) {
        hal_log_err("dma prep error, ret:%d", ret);
        goto end;
    }

    ret = hal_dma_start(hdma);
    if (ret != HAL_DMA_STATUS_OK) {
        hal_log_err("dma start error, ret:%d", ret);
        goto end;
    }

    while (hal_dma_tx_status(hdma, &size)!= 0);

    ret = hal_dma_stop(hdma);
    if (ret != HAL_DMA_STATUS_OK) {
        hal_log_err("dma stop error, ret:%d", ret);
        goto end;
    }

    ret = hal_dma_chan_free(hdma);
    if (ret != HAL_DMA_STATUS_OK) {
        hal_log_err("dma free error, ret:%d", ret);
        goto end;
    }

    hal_dcache_invalidate_all();

    hal_log_info("src buf:\n");
    for (i = 0;i < DMA_TEST_LEN; i++)
        printf("0x%x ", buf1[i]);
    hal_log_info("dst buf:\n");
    for (i = 0;i < DMA_TEST_LEN; i++)
        printf("0x%x ", buf2[i]);

end:
    hal_free(buf1);
    hal_free(buf2);

    return 0;
}

MSH_CMD_EXPORT_ALIAS(cmd_test_dma, hal_dma, dma hal APIs tests)