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28#include "qemu/osdep.h"
29#include "qemu/event_notifier.h"
30#include "qemu/module.h"
31#include "qemu/thread.h"
32#include "qemu/sockets.h"
33#include "qapi/error.h"
34#include "chardev/char.h"
35#include "hw/irq.h"
36#include "hw/pci/pci.h"
37#include "hw/qdev-properties.h"
38#include "migration/vmstate.h"
39#include "net/can_emu.h"
40
41#include "can_sja1000.h"
42#include "qom/object.h"
43
44#define TYPE_CAN_PCI_DEV "pcm3680_pci"
45
46typedef struct Pcm3680iPCIState Pcm3680iPCIState;
47DECLARE_INSTANCE_CHECKER(Pcm3680iPCIState, PCM3680i_PCI_DEV,
48 TYPE_CAN_PCI_DEV)
49
50
51#ifndef PCM3680i_PCI_VENDOR_ID1
52#define PCM3680i_PCI_VENDOR_ID1 0x13fe
53#endif
54
55#ifndef PCM3680i_PCI_DEVICE_ID1
56#define PCM3680i_PCI_DEVICE_ID1 0xc002
57#endif
58
59#define PCM3680i_PCI_SJA_COUNT 2
60#define PCM3680i_PCI_SJA_RANGE 0x100
61
62#define PCM3680i_PCI_BYTES_PER_SJA 0x20
63
64struct Pcm3680iPCIState {
65
66 PCIDevice dev;
67
68 MemoryRegion sja_io[PCM3680i_PCI_SJA_COUNT];
69
70 CanSJA1000State sja_state[PCM3680i_PCI_SJA_COUNT];
71 qemu_irq irq;
72
73 char *model;
74 CanBusState *canbus[PCM3680i_PCI_SJA_COUNT];
75};
76
77static void pcm3680i_pci_reset(DeviceState *dev)
78{
79 Pcm3680iPCIState *d = PCM3680i_PCI_DEV(dev);
80 int i;
81
82 for (i = 0; i < PCM3680i_PCI_SJA_COUNT; i++) {
83 can_sja_hardware_reset(&d->sja_state[i]);
84 }
85}
86
87static uint64_t pcm3680i_pci_sja1_io_read(void *opaque, hwaddr addr,
88 unsigned size)
89{
90 Pcm3680iPCIState *d = opaque;
91 CanSJA1000State *s = &d->sja_state[0];
92
93 if (addr >= PCM3680i_PCI_BYTES_PER_SJA) {
94 return 0;
95 }
96
97 return can_sja_mem_read(s, addr, size);
98}
99
100static void pcm3680i_pci_sja1_io_write(void *opaque, hwaddr addr,
101 uint64_t data, unsigned size)
102{
103 Pcm3680iPCIState *d = opaque;
104 CanSJA1000State *s = &d->sja_state[0];
105
106 if (addr >= PCM3680i_PCI_BYTES_PER_SJA) {
107 return;
108 }
109
110 can_sja_mem_write(s, addr, data, size);
111}
112
113static uint64_t pcm3680i_pci_sja2_io_read(void *opaque, hwaddr addr,
114 unsigned size)
115{
116 Pcm3680iPCIState *d = opaque;
117 CanSJA1000State *s = &d->sja_state[1];
118
119 if (addr >= PCM3680i_PCI_BYTES_PER_SJA) {
120 return 0;
121 }
122
123 return can_sja_mem_read(s, addr, size);
124}
125
126static void pcm3680i_pci_sja2_io_write(void *opaque, hwaddr addr, uint64_t data,
127 unsigned size)
128{
129 Pcm3680iPCIState *d = opaque;
130 CanSJA1000State *s = &d->sja_state[1];
131
132 if (addr >= PCM3680i_PCI_BYTES_PER_SJA) {
133 return;
134 }
135
136 can_sja_mem_write(s, addr, data, size);
137}
138
139static const MemoryRegionOps pcm3680i_pci_sja1_io_ops = {
140 .read = pcm3680i_pci_sja1_io_read,
141 .write = pcm3680i_pci_sja1_io_write,
142 .endianness = DEVICE_LITTLE_ENDIAN,
143 .impl = {
144 .max_access_size = 1,
145 },
146};
147
148static const MemoryRegionOps pcm3680i_pci_sja2_io_ops = {
149 .read = pcm3680i_pci_sja2_io_read,
150 .write = pcm3680i_pci_sja2_io_write,
151 .endianness = DEVICE_LITTLE_ENDIAN,
152 .impl = {
153 .max_access_size = 1,
154 },
155};
156
157static void pcm3680i_pci_realize(PCIDevice *pci_dev, Error **errp)
158{
159 Pcm3680iPCIState *d = PCM3680i_PCI_DEV(pci_dev);
160 uint8_t *pci_conf;
161 int i;
162
163 pci_conf = pci_dev->config;
164 pci_conf[PCI_INTERRUPT_PIN] = 0x01;
165
166 d->irq = pci_allocate_irq(&d->dev);
167
168 for (i = 0; i < PCM3680i_PCI_SJA_COUNT; i++) {
169 can_sja_init(&d->sja_state[i], d->irq);
170 }
171
172 for (i = 0; i < PCM3680i_PCI_SJA_COUNT; i++) {
173 if (can_sja_connect_to_bus(&d->sja_state[i], d->canbus[i]) < 0) {
174 error_setg(errp, "can_sja_connect_to_bus failed");
175 return;
176 }
177 }
178
179 memory_region_init_io(&d->sja_io[0], OBJECT(d), &pcm3680i_pci_sja1_io_ops,
180 d, "pcm3680i_pci-sja1", PCM3680i_PCI_SJA_RANGE);
181
182 memory_region_init_io(&d->sja_io[1], OBJECT(d), &pcm3680i_pci_sja2_io_ops,
183 d, "pcm3680i_pci-sja2", PCM3680i_PCI_SJA_RANGE);
184
185 for (i = 0; i < PCM3680i_PCI_SJA_COUNT; i++) {
186 pci_register_bar(&d->dev, i, PCI_BASE_ADDRESS_SPACE_IO,
187 &d->sja_io[i]);
188 }
189}
190
191static void pcm3680i_pci_exit(PCIDevice *pci_dev)
192{
193 Pcm3680iPCIState *d = PCM3680i_PCI_DEV(pci_dev);
194 int i;
195
196 for (i = 0; i < PCM3680i_PCI_SJA_COUNT; i++) {
197 can_sja_disconnect(&d->sja_state[i]);
198 }
199
200 qemu_free_irq(d->irq);
201}
202
203static const VMStateDescription vmstate_pcm3680i_pci = {
204 .name = "pcm3680i_pci",
205 .version_id = 1,
206 .minimum_version_id = 1,
207 .fields = (VMStateField[]) {
208 VMSTATE_PCI_DEVICE(dev, Pcm3680iPCIState),
209 VMSTATE_STRUCT(sja_state[0], Pcm3680iPCIState, 0,
210 vmstate_can_sja, CanSJA1000State),
211 VMSTATE_STRUCT(sja_state[1], Pcm3680iPCIState, 0,
212 vmstate_can_sja, CanSJA1000State),
213 VMSTATE_END_OF_LIST()
214 }
215};
216
217static void pcm3680i_pci_instance_init(Object *obj)
218{
219 Pcm3680iPCIState *d = PCM3680i_PCI_DEV(obj);
220
221 object_property_add_link(obj, "canbus0", TYPE_CAN_BUS,
222 (Object **)&d->canbus[0],
223 qdev_prop_allow_set_link_before_realize,
224 0);
225 object_property_add_link(obj, "canbus1", TYPE_CAN_BUS,
226 (Object **)&d->canbus[1],
227 qdev_prop_allow_set_link_before_realize,
228 0);
229}
230
231static void pcm3680i_pci_class_init(ObjectClass *klass, void *data)
232{
233 DeviceClass *dc = DEVICE_CLASS(klass);
234 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
235
236 k->realize = pcm3680i_pci_realize;
237 k->exit = pcm3680i_pci_exit;
238 k->vendor_id = PCM3680i_PCI_VENDOR_ID1;
239 k->device_id = PCM3680i_PCI_DEVICE_ID1;
240 k->revision = 0x00;
241 k->class_id = 0x000c09;
242 k->subsystem_vendor_id = PCM3680i_PCI_VENDOR_ID1;
243 k->subsystem_id = PCM3680i_PCI_DEVICE_ID1;
244 dc->desc = "Pcm3680i PCICANx";
245 dc->vmsd = &vmstate_pcm3680i_pci;
246 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
247 dc->reset = pcm3680i_pci_reset;
248}
249
250static const TypeInfo pcm3680i_pci_info = {
251 .name = TYPE_CAN_PCI_DEV,
252 .parent = TYPE_PCI_DEVICE,
253 .instance_size = sizeof(Pcm3680iPCIState),
254 .class_init = pcm3680i_pci_class_init,
255 .instance_init = pcm3680i_pci_instance_init,
256 .interfaces = (InterfaceInfo[]) {
257 { INTERFACE_CONVENTIONAL_PCI_DEVICE },
258 { },
259 },
260};
261
262static void pcm3680i_pci_register_types(void)
263{
264 type_register_static(&pcm3680i_pci_info);
265}
266
267type_init(pcm3680i_pci_register_types)
268
