Xil_Out32(AXI_DMA_ADDR+XAXIDMA_CR_OFFSET, Xil_In32(AXI_DMA_ADDR+XAXIDMA_CR_OFFSET)&(~XAXIDMA_IRQ_ALL_MASK)); //It can be ignored due to system reset; //set DMA_Desc address Xil_Out32(AXI_DMA_ADDR+XAXIDMA_CDESC_OFFSET, (UINTPTR)(&(DMA_Desc[0])));//将首个描述符的描述...
PYNQ开发板使用-使用DMA进行数据搬移-Scatter Gather(sg) DMA transfer 模式,程序员大本营,技术文章内容聚合第一站。
+ dma_sync_sg_for_cpu(mmc_dev(host->mmc), data->sg, + data->sg_len, direction); - for_each_sg(data->sg, sg, host->sg_count, i) { - if (sg_dma_address(sg) & host->align_mask) { - size = host->align_sz - - (sg_dma_address(sg) & host->align_mask); + align =...
static int __pci_p2pdma_map_sg(struct pci_p2pdma_pagemap *p2p_pgmap, struct device *dev, struct scatterlist *sg, int nents) { struct scatterlist *s; int i;for_each_sg(sg, s, nents, i) {s->dma_address = sg_phys(s) + p2p_pgmap->bus_offset;...
if (dir == DMA_DEV_TO_MEM) { @@ -845,13 +845,12 @@ static struct dma_async_tx_descriptor *omap_dma_prep_slave_sg( en = burst; frame_bytes = es_bytes[es] * en; for_each_sg(sgl, sgent, sglen, i) { - d->sg[j].addr = sg_dma_address(sgent); ...
DMA address translation scheme and cache with modified scatter gather element including SG list and descriptor tablesA scatter gather element based caching system is provided along with a modified scatter gather element, that supports efficient logical to physical address translation for arbitrarily aligned...
从图3可以看出,Scatter/Gather Mode下的寄存器列表中没有了Address、Length相关的寄存器了,取而代之的是CURDESC、TAILDESC。Multichannel DMA:S2MM和MM2S都支持多个通道。Multichannel模式下,S2MM有16个通道,每个通道都有独立的CURDESC和TAILDESC寄存器,而CR和SR则是共用的。MM2S多个通道共用一份CURDESC和TAILDESC...
Support DMA transfers The data depth of endpoint 0 is 8 byte The data depth of endpoint 1 and endpoint 2 is 64 byte I2C Port Can be used as host or slave Support the I2C STAND/FAST mode Slave mode compatible with 8/10 address PWM0/1/2 Complementary output and control dead zone time...
int send_udp_packet(u8 *buffer, unsigned int length, unsigned int target_address) { int status; uint32_t tx_ctrl; XAxiDma_BdRing *tx_ring; XAxiDma_Bd *tx_bd_ptr; XAxiDma_Bd *tx_last_bd_ptr; int i; tx_ring = XAxiDma_GetTxRing(&AxiDma); ...
val channelAddress = channelToAddress(channel) @@ -1618,10 +1680,11 @@ abstract class DmaSgTester(p : DmaSg.Parameter, def channelConfig(channel : Int, fifoBase : Int, fifoBytes : Int, priority : Int): Unit ={ priority : Int, weight : Int): Unit ={ val channelAddress = channel...