include/hw/ssi/pl022.h

   1 /*
   2  * ARM PrimeCell PL022 Synchronous Serial Port
   3  *
   4  * Copyright (c) 2007 CodeSourcery.
   5  * Written by Paul Brook
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 or
   9  * (at your option) any later version.
  10  */
  11
  12 /*
  13  * This is a model of the Arm PrimeCell PL022 synchronous serial port.
  14  * The PL022 TRM is:
  15  * https://developer.arm.com/documentation/ddi0194/latest
  16  *
  17  * QEMU interface:
  18  * + sysbus IRQ: SSPINTR combined interrupt line
  19  * + sysbus MMIO region 0: MemoryRegion for the device's registers
  20  */
  21
  22 #ifndef HW_SSI_PL022_H
  23 #define HW_SSI_PL022_H
  24
  25 #include "hw/sysbus.h"
  26 #include "qom/object.h"
  27
  28 #define TYPE_PL022 "pl022"
  29 OBJECT_DECLARE_SIMPLE_TYPE(PL022State, PL022)
  30
  31 struct PL022State {
  32     SysBusDevice parent_obj;
  33
  34     MemoryRegion iomem;
  35     uint32_t cr0;
  36     uint32_t cr1;
  37     uint32_t bitmask;
  38     uint32_t sr;
  39     uint32_t cpsr;
  40     uint32_t is;
  41     uint32_t im;
  42     /* The FIFO head points to the next empty entry.  */
  43     int tx_fifo_head;
  44     int rx_fifo_head;
  45     int tx_fifo_len;
  46     int rx_fifo_len;
  47     uint16_t tx_fifo[8];
  48     uint16_t rx_fifo[8];
  49     qemu_irq irq;
  50     SSIBus *ssi;
  51 };
  52
  53 #endif