xref: /openbmc/qemu/include/hw/ssi/pl022.h (revision f4ceebde)
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
54