75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
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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_setting_t cfg;
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uint hdma;
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u32 timeout = 0xfffff;
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printf("make sure dma contorller has inited\n");
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//dma
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cfg.loop_mode = 0;
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cfg.wait_cyc = 8;
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cfg.data_block_size = 1 * 32/8;
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//config recv(from dram to dram)
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cfg.cfg.src_drq_type = DMAC_CFG_SRC_TYPE_DRAM; //dram
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cfg.cfg.src_addr_mode = DMAC_CFG_DEST_ADDR_TYPE_LINEAR_MODE;
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cfg.cfg.src_burst_length = DMAC_CFG_SRC_1_BURST;
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cfg.cfg.src_data_width = DMAC_CFG_SRC_DATA_WIDTH_32BIT;
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cfg.cfg.reserved0 = 0;
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cfg.cfg.dst_drq_type = DMAC_CFG_DEST_TYPE_DRAM; //DRAM
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cfg.cfg.dst_addr_mode = DMAC_CFG_DEST_ADDR_TYPE_LINEAR_MODE;
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cfg.cfg.dst_burst_length = DMAC_CFG_DEST_1_BURST;
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cfg.cfg.dst_data_width = DMAC_CFG_DEST_DATA_WIDTH_32BIT;
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cfg.cfg.reserved1 = 0;
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if(argc < 3)
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{
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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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{
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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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hdma = sunxi_dma_request(0);
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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,&cfg);
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sunxi_dma_start(hdma,src_addr,dst_addr,len);
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while((timeout-- > 0)&&sunxi_dma_querystatus(hdma));
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if (timeout <= 0) {
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printf("wait dma timeout!\n");
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return -1;
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}
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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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