1 /* 2 * Xilinx Platform CSU Stream DMA emulation 3 * 4 * This implementation is based on 5 * https://github.com/Xilinx/qemu/blob/master/hw/dma/csu_stream_dma.c 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License as 9 * published by the Free Software Foundation; either version 2 or 10 * (at your option) version 3 of the License. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License along 18 * with this program; if not, see <http://www.gnu.org/licenses/>. 19 */ 20 21 #ifndef XLNX_CSU_DMA_H 22 #define XLNX_CSU_DMA_H 23 24 #define TYPE_XLNX_CSU_DMA "xlnx.csu_dma" 25 26 #define XLNX_CSU_DMA_R_MAX (0x2c / 4) 27 28 typedef struct XlnxCSUDMA { 29 SysBusDevice busdev; 30 MemoryRegion iomem; 31 MemTxAttrs attr; 32 MemoryRegion *dma_mr; 33 AddressSpace *dma_as; 34 qemu_irq irq; 35 StreamSink *tx_dev; /* Used as generic StreamSink */ 36 ptimer_state *src_timer; 37 38 uint16_t width; 39 bool is_dst; 40 bool r_size_last_word; 41 42 StreamCanPushNotifyFn notify; 43 void *notify_opaque; 44 45 uint32_t regs[XLNX_CSU_DMA_R_MAX]; 46 RegisterInfo regs_info[XLNX_CSU_DMA_R_MAX]; 47 } XlnxCSUDMA; 48 49 #define XLNX_CSU_DMA(obj) \ 50 OBJECT_CHECK(XlnxCSUDMA, (obj), TYPE_XLNX_CSU_DMA) 51 52 #endif 53