include/hw/ssi/sifive_spi.h

   1 /*
   2  * QEMU model of the SiFive SPI Controller
   3  *
   4  * Copyright (c) 2021 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 modify it
  10  * under the terms and conditions of the GNU General Public License,
  11  * version 2 or later, as published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope it will be useful, but WITHOUT
  14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  16  * more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along with
  19  * this program.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #ifndef HW_SIFIVE_SPI_H
  23 #define HW_SIFIVE_SPI_H
  24
  25 #include "qemu/fifo8.h"
  26 #include "hw/sysbus.h"
  27
  28 #define SIFIVE_SPI_REG_NUM  (0x78 / 4)
  29
  30 #define TYPE_SIFIVE_SPI "sifive.spi"
  31 #define SIFIVE_SPI(obj) OBJECT_CHECK(SiFiveSPIState, (obj), TYPE_SIFIVE_SPI)
  32
  33 typedef struct SiFiveSPIState {
  34     SysBusDevice parent_obj;
  35
  36     MemoryRegion mmio;
  37     qemu_irq irq;
  38
  39     uint32_t num_cs;
  40     qemu_irq *cs_lines;
  41
  42     SSIBus *spi;
  43
  44     Fifo8 tx_fifo;
  45     Fifo8 rx_fifo;
  46
  47     uint32_t regs[SIFIVE_SPI_REG_NUM];
  48 } SiFiveSPIState;
  49
  50 #endif /* HW_SIFIVE_SPI_H */