Merge remote-tracking branch 'remotes/philmd-gitlab/tags/renesas-20201027' into staging
[qemu.git] / hw / misc / imx7_ccm.c
1 /*
2 * Copyright (c) 2018, Impinj, Inc.
3 *
4 * i.MX7 CCM, PMU and ANALOG IP blocks emulation code
5 *
6 * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
7 *
8 * This work is licensed under the terms of the GNU GPL, version 2 or later.
9 * See the COPYING file in the top-level directory.
10 */
11
12 #include "qemu/osdep.h"
13 #include "qemu/log.h"
14 #include "qemu/module.h"
15
16 #include "hw/misc/imx7_ccm.h"
17 #include "migration/vmstate.h"
18
19 static void imx7_analog_reset(DeviceState *dev)
20 {
21 IMX7AnalogState *s = IMX7_ANALOG(dev);
22
23 memset(s->pmu, 0, sizeof(s->pmu));
24 memset(s->analog, 0, sizeof(s->analog));
25
26 s->analog[ANALOG_PLL_ARM] = 0x00002042;
27 s->analog[ANALOG_PLL_DDR] = 0x0060302c;
28 s->analog[ANALOG_PLL_DDR_SS] = 0x00000000;
29 s->analog[ANALOG_PLL_DDR_NUM] = 0x06aaac4d;
30 s->analog[ANALOG_PLL_DDR_DENOM] = 0x100003ec;
31 s->analog[ANALOG_PLL_480] = 0x00002000;
32 s->analog[ANALOG_PLL_480A] = 0x52605a56;
33 s->analog[ANALOG_PLL_480B] = 0x52525216;
34 s->analog[ANALOG_PLL_ENET] = 0x00001fc0;
35 s->analog[ANALOG_PLL_AUDIO] = 0x0001301b;
36 s->analog[ANALOG_PLL_AUDIO_SS] = 0x00000000;
37 s->analog[ANALOG_PLL_AUDIO_NUM] = 0x05f5e100;
38 s->analog[ANALOG_PLL_AUDIO_DENOM] = 0x2964619c;
39 s->analog[ANALOG_PLL_VIDEO] = 0x0008201b;
40 s->analog[ANALOG_PLL_VIDEO_SS] = 0x00000000;
41 s->analog[ANALOG_PLL_VIDEO_NUM] = 0x0000f699;
42 s->analog[ANALOG_PLL_VIDEO_DENOM] = 0x000f4240;
43 s->analog[ANALOG_PLL_MISC0] = 0x00000000;
44
45 /* all PLLs need to be locked */
46 s->analog[ANALOG_PLL_ARM] |= ANALOG_PLL_LOCK;
47 s->analog[ANALOG_PLL_DDR] |= ANALOG_PLL_LOCK;
48 s->analog[ANALOG_PLL_480] |= ANALOG_PLL_LOCK;
49 s->analog[ANALOG_PLL_480A] |= ANALOG_PLL_LOCK;
50 s->analog[ANALOG_PLL_480B] |= ANALOG_PLL_LOCK;
51 s->analog[ANALOG_PLL_ENET] |= ANALOG_PLL_LOCK;
52 s->analog[ANALOG_PLL_AUDIO] |= ANALOG_PLL_LOCK;
53 s->analog[ANALOG_PLL_VIDEO] |= ANALOG_PLL_LOCK;
54 s->analog[ANALOG_PLL_MISC0] |= ANALOG_PLL_LOCK;
55
56 /*
57 * Since I couldn't find any info about this in the reference
58 * manual the value of this register is based strictly on matching
59 * what Linux kernel expects it to be.
60 */
61 s->analog[ANALOG_DIGPROG] = 0x720000;
62 /*
63 * Set revision to be 1.0 (Arbitrary choice, no particular
64 * reason).
65 */
66 s->analog[ANALOG_DIGPROG] |= 0x000010;
67 }
68
69 static void imx7_ccm_reset(DeviceState *dev)
70 {
71 IMX7CCMState *s = IMX7_CCM(dev);
72
73 memset(s->ccm, 0, sizeof(s->ccm));
74 }
75
76 #define CCM_INDEX(offset) (((offset) & ~(hwaddr)0xF) / sizeof(uint32_t))
77 #define CCM_BITOP(offset) ((offset) & (hwaddr)0xF)
78
79 enum {
80 CCM_BITOP_NONE = 0x00,
81 CCM_BITOP_SET = 0x04,
82 CCM_BITOP_CLR = 0x08,
83 CCM_BITOP_TOG = 0x0C,
84 };
85
86 static uint64_t imx7_set_clr_tog_read(void *opaque, hwaddr offset,
87 unsigned size)
88 {
89 const uint32_t *mmio = opaque;
90
91 return mmio[CCM_INDEX(offset)];
92 }
93
94 static void imx7_set_clr_tog_write(void *opaque, hwaddr offset,
95 uint64_t value, unsigned size)
96 {
97 const uint8_t bitop = CCM_BITOP(offset);
98 const uint32_t index = CCM_INDEX(offset);
99 uint32_t *mmio = opaque;
100
101 switch (bitop) {
102 case CCM_BITOP_NONE:
103 mmio[index] = value;
104 break;
105 case CCM_BITOP_SET:
106 mmio[index] |= value;
107 break;
108 case CCM_BITOP_CLR:
109 mmio[index] &= ~value;
110 break;
111 case CCM_BITOP_TOG:
112 mmio[index] ^= value;
113 break;
114 };
115 }
116
117 static const struct MemoryRegionOps imx7_set_clr_tog_ops = {
118 .read = imx7_set_clr_tog_read,
119 .write = imx7_set_clr_tog_write,
120 .endianness = DEVICE_NATIVE_ENDIAN,
121 .impl = {
122 /*
123 * Our device would not work correctly if the guest was doing
124 * unaligned access. This might not be a limitation on the real
125 * device but in practice there is no reason for a guest to access
126 * this device unaligned.
127 */
128 .min_access_size = 4,
129 .max_access_size = 4,
130 .unaligned = false,
131 },
132 };
133
134 static const struct MemoryRegionOps imx7_digprog_ops = {
135 .read = imx7_set_clr_tog_read,
136 .endianness = DEVICE_NATIVE_ENDIAN,
137 .impl = {
138 .min_access_size = 4,
139 .max_access_size = 4,
140 .unaligned = false,
141 },
142 };
143
144 static void imx7_ccm_init(Object *obj)
145 {
146 SysBusDevice *sd = SYS_BUS_DEVICE(obj);
147 IMX7CCMState *s = IMX7_CCM(obj);
148
149 memory_region_init_io(&s->iomem,
150 obj,
151 &imx7_set_clr_tog_ops,
152 s->ccm,
153 TYPE_IMX7_CCM ".ccm",
154 sizeof(s->ccm));
155
156 sysbus_init_mmio(sd, &s->iomem);
157 }
158
159 static void imx7_analog_init(Object *obj)
160 {
161 SysBusDevice *sd = SYS_BUS_DEVICE(obj);
162 IMX7AnalogState *s = IMX7_ANALOG(obj);
163
164 memory_region_init(&s->mmio.container, obj, TYPE_IMX7_ANALOG,
165 0x10000);
166
167 memory_region_init_io(&s->mmio.analog,
168 obj,
169 &imx7_set_clr_tog_ops,
170 s->analog,
171 TYPE_IMX7_ANALOG,
172 sizeof(s->analog));
173
174 memory_region_add_subregion(&s->mmio.container,
175 0x60, &s->mmio.analog);
176
177 memory_region_init_io(&s->mmio.pmu,
178 obj,
179 &imx7_set_clr_tog_ops,
180 s->pmu,
181 TYPE_IMX7_ANALOG ".pmu",
182 sizeof(s->pmu));
183
184 memory_region_add_subregion(&s->mmio.container,
185 0x200, &s->mmio.pmu);
186
187 memory_region_init_io(&s->mmio.digprog,
188 obj,
189 &imx7_digprog_ops,
190 &s->analog[ANALOG_DIGPROG],
191 TYPE_IMX7_ANALOG ".digprog",
192 sizeof(uint32_t));
193
194 memory_region_add_subregion_overlap(&s->mmio.container,
195 0x800, &s->mmio.digprog, 10);
196
197
198 sysbus_init_mmio(sd, &s->mmio.container);
199 }
200
201 static const VMStateDescription vmstate_imx7_ccm = {
202 .name = TYPE_IMX7_CCM,
203 .version_id = 1,
204 .minimum_version_id = 1,
205 .fields = (VMStateField[]) {
206 VMSTATE_UINT32_ARRAY(ccm, IMX7CCMState, CCM_MAX),
207 VMSTATE_END_OF_LIST()
208 },
209 };
210
211 static uint32_t imx7_ccm_get_clock_frequency(IMXCCMState *dev, IMXClk clock)
212 {
213 /*
214 * This function is "consumed" by GPT emulation code, however on
215 * i.MX7 each GPT block can have their own clock root. This means
216 * that this functions needs somehow to know requester's identity
217 * and the way to pass it: be it via additional IMXClk constants
218 * or by adding another argument to this method needs to be
219 * figured out
220 */
221 qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Not implemented\n",
222 TYPE_IMX7_CCM, __func__);
223 return 0;
224 }
225
226 static void imx7_ccm_class_init(ObjectClass *klass, void *data)
227 {
228 DeviceClass *dc = DEVICE_CLASS(klass);
229 IMXCCMClass *ccm = IMX_CCM_CLASS(klass);
230
231 dc->reset = imx7_ccm_reset;
232 dc->vmsd = &vmstate_imx7_ccm;
233 dc->desc = "i.MX7 Clock Control Module";
234
235 ccm->get_clock_frequency = imx7_ccm_get_clock_frequency;
236 }
237
238 static const TypeInfo imx7_ccm_info = {
239 .name = TYPE_IMX7_CCM,
240 .parent = TYPE_IMX_CCM,
241 .instance_size = sizeof(IMX7CCMState),
242 .instance_init = imx7_ccm_init,
243 .class_init = imx7_ccm_class_init,
244 };
245
246 static const VMStateDescription vmstate_imx7_analog = {
247 .name = TYPE_IMX7_ANALOG,
248 .version_id = 1,
249 .minimum_version_id = 1,
250 .fields = (VMStateField[]) {
251 VMSTATE_UINT32_ARRAY(analog, IMX7AnalogState, ANALOG_MAX),
252 VMSTATE_UINT32_ARRAY(pmu, IMX7AnalogState, PMU_MAX),
253 VMSTATE_END_OF_LIST()
254 },
255 };
256
257 static void imx7_analog_class_init(ObjectClass *klass, void *data)
258 {
259 DeviceClass *dc = DEVICE_CLASS(klass);
260
261 dc->reset = imx7_analog_reset;
262 dc->vmsd = &vmstate_imx7_analog;
263 dc->desc = "i.MX7 Analog Module";
264 }
265
266 static const TypeInfo imx7_analog_info = {
267 .name = TYPE_IMX7_ANALOG,
268 .parent = TYPE_SYS_BUS_DEVICE,
269 .instance_size = sizeof(IMX7AnalogState),
270 .instance_init = imx7_analog_init,
271 .class_init = imx7_analog_class_init,
272 };
273
274 static void imx7_ccm_register_type(void)
275 {
276 type_register_static(&imx7_ccm_info);
277 type_register_static(&imx7_analog_info);
278 }
279 type_init(imx7_ccm_register_type)