Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
[qemu.git] / include / hw / char / stm32f2xx_usart.h
1 /*
2 * STM32F2XX USART
3 *
4 * Copyright (c) 2014 Alistair Francis <alistair@alistair23.me>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #ifndef HW_STM32F2XX_USART_H
26 #define HW_STM32F2XX_USART_H
27
28 #include "hw/sysbus.h"
29 #include "chardev/char-fe.h"
30 #include "qom/object.h"
31
32 #define USART_SR 0x00
33 #define USART_DR 0x04
34 #define USART_BRR 0x08
35 #define USART_CR1 0x0C
36 #define USART_CR2 0x10
37 #define USART_CR3 0x14
38 #define USART_GTPR 0x18
39
40 /*
41 * NB: The reset value mentioned in "24.6.1 Status register" seems bogus.
42 * Looking at "Table 98 USART register map and reset values", it seems it
43 * should be 0xc0, and that's how real hardware behaves.
44 */
45 #define USART_SR_RESET (USART_SR_TXE | USART_SR_TC)
46
47 #define USART_SR_TXE (1 << 7)
48 #define USART_SR_TC (1 << 6)
49 #define USART_SR_RXNE (1 << 5)
50
51 #define USART_CR1_UE (1 << 13)
52 #define USART_CR1_RXNEIE (1 << 5)
53 #define USART_CR1_TE (1 << 3)
54 #define USART_CR1_RE (1 << 2)
55
56 #define TYPE_STM32F2XX_USART "stm32f2xx-usart"
57 OBJECT_DECLARE_SIMPLE_TYPE(STM32F2XXUsartState, STM32F2XX_USART)
58
59 struct STM32F2XXUsartState {
60 /* <private> */
61 SysBusDevice parent_obj;
62
63 /* <public> */
64 MemoryRegion mmio;
65
66 uint32_t usart_sr;
67 uint32_t usart_dr;
68 uint32_t usart_brr;
69 uint32_t usart_cr1;
70 uint32_t usart_cr2;
71 uint32_t usart_cr3;
72 uint32_t usart_gtpr;
73
74 CharBackend chr;
75 qemu_irq irq;
76 };
77 #endif /* HW_STM32F2XX_USART_H */