include/hw/dma/sifive_pdma.h

   1 /*
   2  * SiFive Platform DMA emulation
   3  *
   4  * Copyright (c) 2020 Wind River Systems, Inc.
   5  *
   6  * Author:
   7  *   Bin Meng <bin.meng@windriver.com>
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation; either version 2 or
  12  * (at your option) version 3 of the License.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23 #ifndef SIFIVE_PDMA_H
  24 #define SIFIVE_PDMA_H
  25
  26 #include "hw/sysbus.h"
  27
  28 struct sifive_pdma_chan {
  29     uint32_t control;
  30     uint32_t next_config;
  31     uint64_t next_bytes;
  32     uint64_t next_dst;
  33     uint64_t next_src;
  34     uint32_t exec_config;
  35     uint64_t exec_bytes;
  36     uint64_t exec_dst;
  37     uint64_t exec_src;
  38     int state;
  39 };
  40
  41 #define SIFIVE_PDMA_CHANS           4
  42 #define SIFIVE_PDMA_IRQS            (SIFIVE_PDMA_CHANS * 2)
  43 #define SIFIVE_PDMA_REG_SIZE        0x100000
  44 #define SIFIVE_PDMA_CHAN_NO(reg)    ((reg & (SIFIVE_PDMA_REG_SIZE - 1)) >> 12)
  45
  46 typedef struct SiFivePDMAState {
  47     SysBusDevice parent;
  48     MemoryRegion iomem;
  49     qemu_irq irq[SIFIVE_PDMA_IRQS];
  50
  51     struct sifive_pdma_chan chan[SIFIVE_PDMA_CHANS];
  52 } SiFivePDMAState;
  53
  54 #define TYPE_SIFIVE_PDMA    "sifive.pdma"
  55
  56 #define SIFIVE_PDMA(obj)    \
  57     OBJECT_CHECK(SiFivePDMAState, (obj), TYPE_SIFIVE_PDMA)
  58
  59 #endif /* SIFIVE_PDMA_H */