trace: switch position of headers to what Meson requires
[qemu.git] / hw / misc / iotkit-sysinfo.c
1 /*
2 * ARM IoTKit system information block
3 *
4 * Copyright (c) 2018 Linaro Limited
5 * Written by Peter Maydell
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 "system information block" which is part of the
14 * Arm IoTKit and documented in
15 * http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ecm0601256/index.html
16 * It consists of 2 read-only version/config registers, plus the
17 * usual ID registers.
18 */
19
20 #include "qemu/osdep.h"
21 #include "qemu/log.h"
22 #include "qemu/module.h"
23 #include "trace.h"
24 #include "qapi/error.h"
25 #include "hw/sysbus.h"
26 #include "hw/registerfields.h"
27 #include "hw/misc/iotkit-sysinfo.h"
28 #include "hw/qdev-properties.h"
29
30 REG32(SYS_VERSION, 0x0)
31 REG32(SYS_CONFIG, 0x4)
32 REG32(PID4, 0xfd0)
33 REG32(PID5, 0xfd4)
34 REG32(PID6, 0xfd8)
35 REG32(PID7, 0xfdc)
36 REG32(PID0, 0xfe0)
37 REG32(PID1, 0xfe4)
38 REG32(PID2, 0xfe8)
39 REG32(PID3, 0xfec)
40 REG32(CID0, 0xff0)
41 REG32(CID1, 0xff4)
42 REG32(CID2, 0xff8)
43 REG32(CID3, 0xffc)
44
45 /* PID/CID values */
46 static const int sysinfo_id[] = {
47 0x04, 0x00, 0x00, 0x00, /* PID4..PID7 */
48 0x58, 0xb8, 0x0b, 0x00, /* PID0..PID3 */
49 0x0d, 0xf0, 0x05, 0xb1, /* CID0..CID3 */
50 };
51
52 static uint64_t iotkit_sysinfo_read(void *opaque, hwaddr offset,
53 unsigned size)
54 {
55 IoTKitSysInfo *s = IOTKIT_SYSINFO(opaque);
56 uint64_t r;
57
58 switch (offset) {
59 case A_SYS_VERSION:
60 r = s->sys_version;
61 break;
62
63 case A_SYS_CONFIG:
64 r = s->sys_config;
65 break;
66 case A_PID4 ... A_CID3:
67 r = sysinfo_id[(offset - A_PID4) / 4];
68 break;
69 default:
70 qemu_log_mask(LOG_GUEST_ERROR,
71 "IoTKit SysInfo read: bad offset %x\n", (int)offset);
72 r = 0;
73 break;
74 }
75 trace_iotkit_sysinfo_read(offset, r, size);
76 return r;
77 }
78
79 static void iotkit_sysinfo_write(void *opaque, hwaddr offset,
80 uint64_t value, unsigned size)
81 {
82 trace_iotkit_sysinfo_write(offset, value, size);
83
84 qemu_log_mask(LOG_GUEST_ERROR,
85 "IoTKit SysInfo: write to RO offset 0x%x\n", (int)offset);
86 }
87
88 static const MemoryRegionOps iotkit_sysinfo_ops = {
89 .read = iotkit_sysinfo_read,
90 .write = iotkit_sysinfo_write,
91 .endianness = DEVICE_LITTLE_ENDIAN,
92 /* byte/halfword accesses are just zero-padded on reads and writes */
93 .impl.min_access_size = 4,
94 .impl.max_access_size = 4,
95 .valid.min_access_size = 1,
96 .valid.max_access_size = 4,
97 };
98
99 static Property iotkit_sysinfo_props[] = {
100 DEFINE_PROP_UINT32("SYS_VERSION", IoTKitSysInfo, sys_version, 0),
101 DEFINE_PROP_UINT32("SYS_CONFIG", IoTKitSysInfo, sys_config, 0),
102 DEFINE_PROP_END_OF_LIST()
103 };
104
105 static void iotkit_sysinfo_init(Object *obj)
106 {
107 SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
108 IoTKitSysInfo *s = IOTKIT_SYSINFO(obj);
109
110 memory_region_init_io(&s->iomem, obj, &iotkit_sysinfo_ops,
111 s, "iotkit-sysinfo", 0x1000);
112 sysbus_init_mmio(sbd, &s->iomem);
113 }
114
115 static void iotkit_sysinfo_class_init(ObjectClass *klass, void *data)
116 {
117 DeviceClass *dc = DEVICE_CLASS(klass);
118
119 /*
120 * This device has no guest-modifiable state and so it
121 * does not need a reset function or VMState.
122 */
123
124 device_class_set_props(dc, iotkit_sysinfo_props);
125 }
126
127 static const TypeInfo iotkit_sysinfo_info = {
128 .name = TYPE_IOTKIT_SYSINFO,
129 .parent = TYPE_SYS_BUS_DEVICE,
130 .instance_size = sizeof(IoTKitSysInfo),
131 .instance_init = iotkit_sysinfo_init,
132 .class_init = iotkit_sysinfo_class_init,
133 };
134
135 static void iotkit_sysinfo_register_types(void)
136 {
137 type_register_static(&iotkit_sysinfo_info);
138 }
139
140 type_init(iotkit_sysinfo_register_types);