From 35593573b25f8774ce16be8a7d703b7740964e81 Mon Sep 17 00:00:00 2001 From: Xuzhou Cheng Date: Wed, 3 Mar 2021 21:52:50 +0800 Subject: hw/dma: Implement a Xilinx CSU DMA model ZynqMP QSPI supports SPI transfer using DMA mode, but currently this is unimplemented. When QSPI is programmed to use DMA mode, QEMU will crash. This is observed when testing VxWorks 7. This adds a Xilinx CSU DMA model and the implementation is based on https://github.com/Xilinx/qemu/blob/master/hw/dma/csu_stream_dma.c. The DST part of the model is verified along with ZynqMP GQSPI model. Signed-off-by: Xuzhou Cheng Signed-off-by: Bin Meng Tested-by: Edgar E. Iglesias Reviewed-by: Edgar E. Iglesias Message-id: 20210303135254.3970-2-bmeng.cn@gmail.com Signed-off-by: Peter Maydell --- include/hw/dma/xlnx_csu_dma.h | 52 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 include/hw/dma/xlnx_csu_dma.h (limited to 'include') diff --git a/include/hw/dma/xlnx_csu_dma.h b/include/hw/dma/xlnx_csu_dma.h new file mode 100644 index 0000000..204d94c --- /dev/null +++ b/include/hw/dma/xlnx_csu_dma.h @@ -0,0 +1,52 @@ +/* + * Xilinx Platform CSU Stream DMA emulation + * + * This implementation is based on + * https://github.com/Xilinx/qemu/blob/master/hw/dma/csu_stream_dma.c + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 or + * (at your option) version 3 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + */ + +#ifndef XLNX_CSU_DMA_H +#define XLNX_CSU_DMA_H + +#define TYPE_XLNX_CSU_DMA "xlnx.csu_dma" + +#define XLNX_CSU_DMA_R_MAX (0x2c / 4) + +typedef struct XlnxCSUDMA { + SysBusDevice busdev; + MemoryRegion iomem; + MemTxAttrs attr; + MemoryRegion *dma_mr; + AddressSpace *dma_as; + qemu_irq irq; + StreamSink *tx_dev; /* Used as generic StreamSink */ + ptimer_state *src_timer; + + uint16_t width; + bool is_dst; + bool r_size_last_word; + + StreamCanPushNotifyFn notify; + void *notify_opaque; + + uint32_t regs[XLNX_CSU_DMA_R_MAX]; + RegisterInfo regs_info[XLNX_CSU_DMA_R_MAX]; +} XlnxCSUDMA; + +#define XLNX_CSU_DMA(obj) \ + OBJECT_CHECK(XlnxCSUDMA, (obj), TYPE_XLNX_CSU_DMA) + +#endif -- cgit v1.1