include/hw/dma/xlnx_csu_dma.h

   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