qemu

FORK: QEMU emulator
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pl022.h (1208B)

      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