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#include <common.h>
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#include <command.h>
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#include <malloc.h>
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#include <asm/arch/dma.h>
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static void sunxi_dma_isr(void *p_arg)
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{
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printf("dma int occur\n");
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}
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static int do_sunxi_dma_test(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
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{
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unsigned int src_addr = 0, dst_addr= 0, len = 512;
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sunxi_dma_set dma_set;
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uint hdma, st=0;
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ulong timeout;
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if(argc < 3) {
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printf("parameters error\n");
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return -1;
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}
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else {
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/* use argument only*/
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src_addr = simple_strtoul(argv[1], NULL, 16);
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dst_addr = simple_strtoul(argv[2], NULL, 16);
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if(argc == 4)
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len = simple_strtoul(argv[3], NULL, 16);
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}
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len = ALIGN(len, 4);
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printf("sunxi dma: 0x%08x ====> 0x%08x, len %d \n", src_addr, dst_addr, len);
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/* dma */
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dma_set.loop_mode = 0;
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dma_set.wait_cyc = 8;
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dma_set.data_block_size = 1 * 32/8;
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/* channal config (from dram to dram)*/
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dma_set.channal_cfg.src_drq_type = DMAC_CFG_TYPE_DRAM ; //dram
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dma_set.channal_cfg.src_addr_mode = DMAC_CFG_DEST_ADDR_TYPE_LINEAR_MODE;
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dma_set.channal_cfg.src_burst_length = DMAC_CFG_SRC_1_BURST;
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dma_set.channal_cfg.src_data_width = DMAC_CFG_SRC_DATA_WIDTH_32BIT;
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dma_set.channal_cfg.reserved0 = 0;
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dma_set.channal_cfg.dst_drq_type = DMAC_CFG_TYPE_DRAM; //dram
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dma_set.channal_cfg.dst_burst_length = DMAC_CFG_DEST_1_BURST;
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dma_set.channal_cfg.dst_addr_mode = DMAC_CFG_DEST_ADDR_TYPE_LINEAR_MODE;
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dma_set.channal_cfg.dst_data_width = DMAC_CFG_DEST_DATA_WIDTH_32BIT;
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dma_set.channal_cfg.reserved1 = 0;
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flush_cache(src_addr, len);
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flush_cache(dst_addr, len);
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sunxi_dma_init();
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hdma = sunxi_dma_request(0);
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if(!hdma)
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printf("can't request dma\n");
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sunxi_dma_install_int(hdma, sunxi_dma_isr, NULL);
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sunxi_dma_enable_int(hdma);
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sunxi_dma_setting(hdma, &dma_set);
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sunxi_dma_start(hdma, src_addr, dst_addr, len);
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/* timeout : 1000 ms */
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timeout = get_timer(0);
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st = sunxi_dma_querystatus(hdma);
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while((get_timer(timeout) < 1000) && st)
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st = sunxi_dma_querystatus(hdma);
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if (st) {
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printf("wait dma timeout!\n");
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}
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sunxi_dma_stop(hdma);
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sunxi_dma_release(hdma);
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return 0;
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}
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U_BOOT_CMD(
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sunxi_dma, 3, 1, do_sunxi_dma_test,
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"do dma test",
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"sunxi_dma src_addr dst_addr"
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);
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