include/hw/ssi/mss-spi.h

   1 /*
   2  * Microsemi SmartFusion2 SPI
   3  *
   4  * Copyright (c) 2017 Subbaraya Sundeep <sundeep.lkml@gmail.com>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #ifndef HW_MSS_SPI_H
  26 #define HW_MSS_SPI_H
  27
  28 #include "hw/sysbus.h"
  29 #include "hw/ssi/ssi.h"
  30 #include "qemu/fifo32.h"
  31
  32 #define TYPE_MSS_SPI   "mss-spi"
  33 #define MSS_SPI(obj)   OBJECT_CHECK(MSSSpiState, (obj), TYPE_MSS_SPI)
  34
  35 #define R_SPI_MAX             16
  36
  37 typedef struct MSSSpiState {
  38     SysBusDevice parent_obj;
  39
  40     MemoryRegion mmio;
  41
  42     qemu_irq irq;
  43
  44     qemu_irq cs_line;
  45
  46     SSIBus *spi;
  47
  48     Fifo32 rx_fifo;
  49     Fifo32 tx_fifo;
  50
  51     int fifo_depth;
  52     uint32_t frame_count;
  53     bool enabled;
  54
  55     uint32_t regs[R_SPI_MAX];
  56 } MSSSpiState;
  57
  58 #endif /* HW_MSS_SPI_H */