Merge tag 'pull-hex-20221003' of https://github.com/quic/qemu into staging
[qemu.git] / hw / sd / aspeed_sdhci.c
1 /*
2 * Aspeed SD Host Controller
3 * Eddie James <eajames@linux.ibm.com>
4 *
5 * Copyright (C) 2019 IBM Corp
6 * SPDX-License-Identifier: GPL-2.0-or-later
7 */
8
9 #include "qemu/osdep.h"
10 #include "qemu/log.h"
11 #include "qemu/error-report.h"
12 #include "hw/sd/aspeed_sdhci.h"
13 #include "qapi/error.h"
14 #include "hw/irq.h"
15 #include "migration/vmstate.h"
16 #include "hw/qdev-properties.h"
17 #include "trace.h"
18
19 #define ASPEED_SDHCI_INFO 0x00
20 #define ASPEED_SDHCI_INFO_SLOT1 (1 << 17)
21 #define ASPEED_SDHCI_INFO_SLOT0 (1 << 16)
22 #define ASPEED_SDHCI_INFO_RESET (1 << 0)
23 #define ASPEED_SDHCI_DEBOUNCE 0x04
24 #define ASPEED_SDHCI_DEBOUNCE_RESET 0x00000005
25 #define ASPEED_SDHCI_BUS 0x08
26 #define ASPEED_SDHCI_SDIO_140 0x10
27 #define ASPEED_SDHCI_SDIO_148 0x18
28 #define ASPEED_SDHCI_SDIO_240 0x20
29 #define ASPEED_SDHCI_SDIO_248 0x28
30 #define ASPEED_SDHCI_WP_POL 0xec
31 #define ASPEED_SDHCI_CARD_DET 0xf0
32 #define ASPEED_SDHCI_IRQ_STAT 0xfc
33
34 #define TO_REG(addr) ((addr) / sizeof(uint32_t))
35
36 static uint64_t aspeed_sdhci_read(void *opaque, hwaddr addr, unsigned int size)
37 {
38 uint32_t val = 0;
39 AspeedSDHCIState *sdhci = opaque;
40
41 switch (addr) {
42 case ASPEED_SDHCI_SDIO_140:
43 val = (uint32_t)sdhci->slots[0].capareg;
44 break;
45 case ASPEED_SDHCI_SDIO_148:
46 val = (uint32_t)sdhci->slots[0].maxcurr;
47 break;
48 case ASPEED_SDHCI_SDIO_240:
49 val = (uint32_t)sdhci->slots[1].capareg;
50 break;
51 case ASPEED_SDHCI_SDIO_248:
52 val = (uint32_t)sdhci->slots[1].maxcurr;
53 break;
54 default:
55 if (addr < ASPEED_SDHCI_REG_SIZE) {
56 val = sdhci->regs[TO_REG(addr)];
57 } else {
58 qemu_log_mask(LOG_GUEST_ERROR,
59 "%s: Out-of-bounds read at 0x%" HWADDR_PRIx "\n",
60 __func__, addr);
61 }
62 }
63
64 trace_aspeed_sdhci_read(addr, size, (uint64_t) val);
65
66 return (uint64_t)val;
67 }
68
69 static void aspeed_sdhci_write(void *opaque, hwaddr addr, uint64_t val,
70 unsigned int size)
71 {
72 AspeedSDHCIState *sdhci = opaque;
73
74 trace_aspeed_sdhci_write(addr, size, val);
75
76 switch (addr) {
77 case ASPEED_SDHCI_INFO:
78 /* The RESET bit automatically clears. */
79 sdhci->regs[TO_REG(addr)] = (uint32_t)val & ~ASPEED_SDHCI_INFO_RESET;
80 break;
81 case ASPEED_SDHCI_SDIO_140:
82 sdhci->slots[0].capareg = (uint64_t)(uint32_t)val;
83 break;
84 case ASPEED_SDHCI_SDIO_148:
85 sdhci->slots[0].maxcurr = (uint64_t)(uint32_t)val;
86 break;
87 case ASPEED_SDHCI_SDIO_240:
88 sdhci->slots[1].capareg = (uint64_t)(uint32_t)val;
89 break;
90 case ASPEED_SDHCI_SDIO_248:
91 sdhci->slots[1].maxcurr = (uint64_t)(uint32_t)val;
92 break;
93 default:
94 if (addr < ASPEED_SDHCI_REG_SIZE) {
95 sdhci->regs[TO_REG(addr)] = (uint32_t)val;
96 } else {
97 qemu_log_mask(LOG_GUEST_ERROR,
98 "%s: Out-of-bounds write at 0x%" HWADDR_PRIx "\n",
99 __func__, addr);
100 }
101 }
102 }
103
104 static const MemoryRegionOps aspeed_sdhci_ops = {
105 .read = aspeed_sdhci_read,
106 .write = aspeed_sdhci_write,
107 .endianness = DEVICE_NATIVE_ENDIAN,
108 .valid.min_access_size = 4,
109 .valid.max_access_size = 4,
110 };
111
112 static void aspeed_sdhci_set_irq(void *opaque, int n, int level)
113 {
114 AspeedSDHCIState *sdhci = opaque;
115
116 if (level) {
117 sdhci->regs[TO_REG(ASPEED_SDHCI_IRQ_STAT)] |= BIT(n);
118
119 qemu_irq_raise(sdhci->irq);
120 } else {
121 sdhci->regs[TO_REG(ASPEED_SDHCI_IRQ_STAT)] &= ~BIT(n);
122
123 qemu_irq_lower(sdhci->irq);
124 }
125 }
126
127 static void aspeed_sdhci_realize(DeviceState *dev, Error **errp)
128 {
129 SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
130 AspeedSDHCIState *sdhci = ASPEED_SDHCI(dev);
131
132 /* Create input irqs for the slots */
133 qdev_init_gpio_in_named_with_opaque(DEVICE(sbd), aspeed_sdhci_set_irq,
134 sdhci, NULL, sdhci->num_slots);
135
136 sysbus_init_irq(sbd, &sdhci->irq);
137 memory_region_init_io(&sdhci->iomem, OBJECT(sdhci), &aspeed_sdhci_ops,
138 sdhci, TYPE_ASPEED_SDHCI, 0x1000);
139 sysbus_init_mmio(sbd, &sdhci->iomem);
140
141 for (int i = 0; i < sdhci->num_slots; ++i) {
142 Object *sdhci_slot = OBJECT(&sdhci->slots[i]);
143 SysBusDevice *sbd_slot = SYS_BUS_DEVICE(&sdhci->slots[i]);
144
145 if (!object_property_set_int(sdhci_slot, "sd-spec-version", 2, errp)) {
146 return;
147 }
148
149 if (!object_property_set_uint(sdhci_slot, "capareg",
150 ASPEED_SDHCI_CAPABILITIES, errp)) {
151 return;
152 }
153
154 if (!sysbus_realize(sbd_slot, errp)) {
155 return;
156 }
157
158 sysbus_connect_irq(sbd_slot, 0, qdev_get_gpio_in(DEVICE(sbd), i));
159 memory_region_add_subregion(&sdhci->iomem, (i + 1) * 0x100,
160 &sdhci->slots[i].iomem);
161 }
162 }
163
164 static void aspeed_sdhci_reset(DeviceState *dev)
165 {
166 AspeedSDHCIState *sdhci = ASPEED_SDHCI(dev);
167
168 memset(sdhci->regs, 0, ASPEED_SDHCI_REG_SIZE);
169
170 sdhci->regs[TO_REG(ASPEED_SDHCI_INFO)] = ASPEED_SDHCI_INFO_SLOT0;
171 if (sdhci->num_slots == 2) {
172 sdhci->regs[TO_REG(ASPEED_SDHCI_INFO)] |= ASPEED_SDHCI_INFO_SLOT1;
173 }
174 sdhci->regs[TO_REG(ASPEED_SDHCI_DEBOUNCE)] = ASPEED_SDHCI_DEBOUNCE_RESET;
175 }
176
177 static const VMStateDescription vmstate_aspeed_sdhci = {
178 .name = TYPE_ASPEED_SDHCI,
179 .version_id = 1,
180 .fields = (VMStateField[]) {
181 VMSTATE_UINT32_ARRAY(regs, AspeedSDHCIState, ASPEED_SDHCI_NUM_REGS),
182 VMSTATE_END_OF_LIST(),
183 },
184 };
185
186 static Property aspeed_sdhci_properties[] = {
187 DEFINE_PROP_UINT8("num-slots", AspeedSDHCIState, num_slots, 0),
188 DEFINE_PROP_END_OF_LIST(),
189 };
190
191 static void aspeed_sdhci_class_init(ObjectClass *classp, void *data)
192 {
193 DeviceClass *dc = DEVICE_CLASS(classp);
194
195 dc->realize = aspeed_sdhci_realize;
196 dc->reset = aspeed_sdhci_reset;
197 dc->vmsd = &vmstate_aspeed_sdhci;
198 device_class_set_props(dc, aspeed_sdhci_properties);
199 }
200
201 static const TypeInfo aspeed_sdhci_info = {
202 .name = TYPE_ASPEED_SDHCI,
203 .parent = TYPE_SYS_BUS_DEVICE,
204 .instance_size = sizeof(AspeedSDHCIState),
205 .class_init = aspeed_sdhci_class_init,
206 };
207
208 static void aspeed_sdhci_register_types(void)
209 {
210 type_register_static(&aspeed_sdhci_info);
211 }
212
213 type_init(aspeed_sdhci_register_types)