Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20211016' into staging
[qemu.git] / include / hw / char / nrf51_uart.h
1 /*
2 * nRF51 SoC UART emulation
3 *
4 * Copyright (c) 2018 Julia Suvorova <jusual@mail.ru>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 or
8 * (at your option) any later version.
9 */
10
11 #ifndef NRF51_UART_H
12 #define NRF51_UART_H
13
14 #include "hw/sysbus.h"
15 #include "chardev/char-fe.h"
16 #include "hw/registerfields.h"
17 #include "qom/object.h"
18
19 #define UART_FIFO_LENGTH 6
20 #define UART_SIZE 0x1000
21
22 #define TYPE_NRF51_UART "nrf51_soc.uart"
23 OBJECT_DECLARE_SIMPLE_TYPE(NRF51UARTState, NRF51_UART)
24
25 REG32(UART_STARTRX, 0x000)
26 REG32(UART_STOPRX, 0x004)
27 REG32(UART_STARTTX, 0x008)
28 REG32(UART_STOPTX, 0x00C)
29 REG32(UART_SUSPEND, 0x01C)
30
31 REG32(UART_CTS, 0x100)
32 REG32(UART_NCTS, 0x104)
33 REG32(UART_RXDRDY, 0x108)
34 REG32(UART_TXDRDY, 0x11C)
35 REG32(UART_ERROR, 0x124)
36 REG32(UART_RXTO, 0x144)
37
38 REG32(UART_INTEN, 0x300)
39 FIELD(UART_INTEN, CTS, 0, 1)
40 FIELD(UART_INTEN, NCTS, 1, 1)
41 FIELD(UART_INTEN, RXDRDY, 2, 1)
42 FIELD(UART_INTEN, TXDRDY, 7, 1)
43 FIELD(UART_INTEN, ERROR, 9, 1)
44 FIELD(UART_INTEN, RXTO, 17, 1)
45 REG32(UART_INTENSET, 0x304)
46 REG32(UART_INTENCLR, 0x308)
47 REG32(UART_ERRORSRC, 0x480)
48 REG32(UART_ENABLE, 0x500)
49 REG32(UART_PSELRTS, 0x508)
50 REG32(UART_PSELTXD, 0x50C)
51 REG32(UART_PSELCTS, 0x510)
52 REG32(UART_PSELRXD, 0x514)
53 REG32(UART_RXD, 0x518)
54 REG32(UART_TXD, 0x51C)
55 REG32(UART_BAUDRATE, 0x524)
56 REG32(UART_CONFIG, 0x56C)
57
58 struct NRF51UARTState {
59 SysBusDevice parent_obj;
60
61 MemoryRegion iomem;
62 CharBackend chr;
63 qemu_irq irq;
64 guint watch_tag;
65
66 uint8_t rx_fifo[UART_FIFO_LENGTH];
67 unsigned int rx_fifo_pos;
68 unsigned int rx_fifo_len;
69
70 uint32_t reg[0x56C];
71
72 bool rx_started;
73 bool tx_started;
74 bool pending_tx_byte;
75 bool enabled;
76 };
77
78 #endif