operation it continues the calculation with new sources @DMA_PREP_FENCE - tell the driver that subsequent operations depend on the result of this operation @DMA_CTRL_REUSE: client can reuse the descriptor and submit again till cleared or freed */ 配置成功后会返回一个结构体,如果使用了DMA_PREP_...
DMA_PREP_INTERRUPT:告诉DMA controller driver,本次传输完成后,产生一个中断,并调用client提供的回调函数 DMA_PREP_FENCE:告诉DMA controller driver,后续的传输,依赖本次传输的结果(这样controller driver就会小心的组织多个dma传输之间的顺序) … structdma_async_tx_descriptor*dmaengine_prep_dma_cyclic(...
Fonction ReadUInt32NoFence Fonction ReadUInt32Raw structure REENUMERATE_SELF_INTERFACE_STANDARD structure REG_CALLBACK_CONTEXT_CLEANUP_INFORMATION structure REG_CREATE_KEY_INFORMATION structure REG_CREATE_KEY_INFORMATION_V1 structure REG_DELETE_KEY_INFORMATION structure REG_DELETE_VALUE_KEY_INFORMATION structur...
ReadUInt32NoFence-Funktion ReadUInt32Raw-Funktion REENUMERATE_SELF_INTERFACE_STANDARD Struktur REG_CALLBACK_CONTEXT_CLEANUP_INFORMATION Struktur REG_CREATE_KEY_INFORMATION Struktur REG_CREATE_KEY_INFORMATION_V1 Struktur REG_DELETE_KEY_INFORMATION Struktur REG_DELETE_VALUE_KEY_INFORMATION Struktur REG_ENUMERAT...
I'm more on the hardware side of the fence so I recommend the mailing list at rocketboards as well. One thing to know is that if you want to maximize the throughput of moving data from SDRAM in the HPS to the FPGA the fastest method is to have the FPGA...
I'm more on the hardware side of the fence so I recommend the mailing list at rocketboards as well. One thing to know is that if you want to maximize the throughput of moving data from SDRAM in the HPS to the FPGA the fastest method is to have the FPGA ...
info->status = dma_fence_get_status(fence); while (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags) && !test_bit(DMA_FENCE_FLAG_TIMESTAMP_BIT, &fence->flags)) cpu_relax(); info->timestamp_ns = test_bit(DMA_FENCE_FLAG_TIMESTAMP_BIT, &fence->flags) ? ktime_to_ns(fence->...
strlcpy(info->driver_name, fence->ops->get_driver_name(fence), sizeof(info->driver_name));info->status = dma_fence_get_status(fence); while (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags) && !test_bit(DMA_FENCE_FLAG_TIMESTAMP_BIT, &fence->flags)) @@ -400,12 +366...
dma_fence_set_deadline(f, deadline); } } const struct dma_fence_ops dma_fence_chain_ops = { .use_64bit_seqno = true, .get_driver_name = dma_fence_chain_get_driver_name, .get_timeline_name = dma_fence_chain_get_timeline_name, .enable_signaling = dma_fence_chain_enable_signaling...
* @DMA_PREP_FENCE - tell the driver that subsequent operations depend * on the result of this operation * @DMA_CTRL_REUSE: client can reuse the descriptor and submit again till * cleared or freed * @DMA_PREP_CMD: tell the driver that the data passed to DMA API is...