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 /* This is a model of the Arm PrimeCell PL022 synchronous serial port.
  13  * The PL022 TRM is:
  14  * http://infocenter.arm.com/help/topic/com.arm.doc.ddi0194h/DDI0194H_ssp_pl022_trm.pdf
  15  *
  16  * QEMU interface:
  17  * + sysbus IRQ: SSPINTR combined interrupt line
  18  * + sysbus MMIO region 0: MemoryRegion for the device's registers
  19  */
  20
  21 #ifndef HW_SSI_PL022_H
  22 #define HW_SSI_PL022_H
  23
  24 #include "hw/sysbus.h"
  25 #include "qom/object.h"
  26
  27 #define TYPE_PL022 "pl022"
  28 typedef struct PL022State PL022State;
  29 DECLARE_INSTANCE_CHECKER(PL022State, PL022,
  30                          TYPE_PL022)
  31
  32 struct PL022State {
  33     SysBusDevice parent_obj;
  34
  35     MemoryRegion iomem;
  36     uint32_t cr0;
  37     uint32_t cr1;
  38     uint32_t bitmask;
  39     uint32_t sr;
  40     uint32_t cpsr;
  41     uint32_t is;
  42     uint32_t im;
  43     /* The FIFO head points to the next empty entry.  */
  44     int tx_fifo_head;
  45     int rx_fifo_head;
  46     int tx_fifo_len;
  47     int rx_fifo_len;
  48     uint16_t tx_fifo[8];
  49     uint16_t rx_fifo[8];
  50     qemu_irq irq;
  51     SSIBus *ssi;
  52 };
  53
  54 #endif