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Commit | Line | Data |
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32993977 IY |
1 | /* |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
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 | /* | |
669dcb60 | 25 | * split out ioport related stuffs from vl.c. |
32993977 IY |
26 | */ |
27 | ||
d38ea87a | 28 | #include "qemu/osdep.h" |
33c11879 | 29 | #include "cpu.h" |
022c62cb | 30 | #include "exec/ioport.h" |
022c62cb | 31 | #include "exec/memory.h" |
b40acf99 | 32 | #include "exec/address-spaces.h" |
8b7a5507 | 33 | #include "trace.h" |
32993977 | 34 | |
28770689 MCA |
35 | struct MemoryRegionPortioList { |
36 | Object obj; | |
37 | ||
b40acf99 JK |
38 | MemoryRegion mr; |
39 | void *portio_opaque; | |
d2f07b75 | 40 | MemoryRegionPortio *ports; |
28770689 MCA |
41 | }; |
42 | ||
43 | #define TYPE_MEMORY_REGION_PORTIO_LIST "memory-region-portio-list" | |
44 | OBJECT_DECLARE_SIMPLE_TYPE(MemoryRegionPortioList, MEMORY_REGION_PORTIO_LIST) | |
b40acf99 | 45 | |
3bb28b72 JK |
46 | static uint64_t unassigned_io_read(void *opaque, hwaddr addr, unsigned size) |
47 | { | |
48 | return -1ULL; | |
49 | } | |
50 | ||
51 | static void unassigned_io_write(void *opaque, hwaddr addr, uint64_t val, | |
52 | unsigned size) | |
53 | { | |
54 | } | |
55 | ||
56 | const MemoryRegionOps unassigned_io_ops = { | |
57 | .read = unassigned_io_read, | |
58 | .write = unassigned_io_write, | |
59 | .endianness = DEVICE_NATIVE_ENDIAN, | |
60 | }; | |
61 | ||
89a80e74 | 62 | void cpu_outb(uint32_t addr, uint8_t val) |
32993977 | 63 | { |
6f94b7d9 | 64 | trace_cpu_out(addr, 'b', val); |
5c9eb028 PM |
65 | address_space_write(&address_space_io, addr, MEMTXATTRS_UNSPECIFIED, |
66 | &val, 1); | |
32993977 IY |
67 | } |
68 | ||
89a80e74 | 69 | void cpu_outw(uint32_t addr, uint16_t val) |
32993977 | 70 | { |
b40acf99 JK |
71 | uint8_t buf[2]; |
72 | ||
6f94b7d9 | 73 | trace_cpu_out(addr, 'w', val); |
b40acf99 | 74 | stw_p(buf, val); |
5c9eb028 PM |
75 | address_space_write(&address_space_io, addr, MEMTXATTRS_UNSPECIFIED, |
76 | buf, 2); | |
32993977 IY |
77 | } |
78 | ||
89a80e74 | 79 | void cpu_outl(uint32_t addr, uint32_t val) |
32993977 | 80 | { |
b40acf99 JK |
81 | uint8_t buf[4]; |
82 | ||
6f94b7d9 | 83 | trace_cpu_out(addr, 'l', val); |
b40acf99 | 84 | stl_p(buf, val); |
5c9eb028 PM |
85 | address_space_write(&address_space_io, addr, MEMTXATTRS_UNSPECIFIED, |
86 | buf, 4); | |
32993977 IY |
87 | } |
88 | ||
89a80e74 | 89 | uint8_t cpu_inb(uint32_t addr) |
32993977 | 90 | { |
07323531 | 91 | uint8_t val; |
b40acf99 | 92 | |
5c9eb028 PM |
93 | address_space_read(&address_space_io, addr, MEMTXATTRS_UNSPECIFIED, |
94 | &val, 1); | |
6f94b7d9 | 95 | trace_cpu_in(addr, 'b', val); |
32993977 IY |
96 | return val; |
97 | } | |
98 | ||
89a80e74 | 99 | uint16_t cpu_inw(uint32_t addr) |
32993977 | 100 | { |
b40acf99 | 101 | uint8_t buf[2]; |
07323531 | 102 | uint16_t val; |
b40acf99 | 103 | |
5c9eb028 | 104 | address_space_read(&address_space_io, addr, MEMTXATTRS_UNSPECIFIED, buf, 2); |
b40acf99 | 105 | val = lduw_p(buf); |
6f94b7d9 | 106 | trace_cpu_in(addr, 'w', val); |
32993977 IY |
107 | return val; |
108 | } | |
109 | ||
89a80e74 | 110 | uint32_t cpu_inl(uint32_t addr) |
32993977 | 111 | { |
b40acf99 | 112 | uint8_t buf[4]; |
07323531 | 113 | uint32_t val; |
b40acf99 | 114 | |
5c9eb028 | 115 | address_space_read(&address_space_io, addr, MEMTXATTRS_UNSPECIFIED, buf, 4); |
b40acf99 | 116 | val = ldl_p(buf); |
6f94b7d9 | 117 | trace_cpu_in(addr, 'l', val); |
32993977 IY |
118 | return val; |
119 | } | |
6bf9fd43 AK |
120 | |
121 | void portio_list_init(PortioList *piolist, | |
db10ca90 | 122 | Object *owner, |
6bf9fd43 AK |
123 | const MemoryRegionPortio *callbacks, |
124 | void *opaque, const char *name) | |
125 | { | |
126 | unsigned n = 0; | |
127 | ||
128 | while (callbacks[n].size) { | |
129 | ++n; | |
130 | } | |
131 | ||
132 | piolist->ports = callbacks; | |
133 | piolist->nr = 0; | |
134 | piolist->regions = g_new0(MemoryRegion *, n); | |
135 | piolist->address_space = NULL; | |
ad2b6523 | 136 | piolist->addr = 0; |
6bf9fd43 | 137 | piolist->opaque = opaque; |
db10ca90 | 138 | piolist->owner = owner; |
6bf9fd43 | 139 | piolist->name = name; |
c76bc480 JK |
140 | piolist->flush_coalesced_mmio = false; |
141 | } | |
142 | ||
143 | void portio_list_set_flush_coalesced(PortioList *piolist) | |
144 | { | |
145 | piolist->flush_coalesced_mmio = true; | |
6bf9fd43 AK |
146 | } |
147 | ||
148 | void portio_list_destroy(PortioList *piolist) | |
149 | { | |
e3fb0ade PB |
150 | MemoryRegionPortioList *mrpio; |
151 | unsigned i; | |
152 | ||
153 | for (i = 0; i < piolist->nr; ++i) { | |
154 | mrpio = container_of(piolist->regions[i], MemoryRegionPortioList, mr); | |
d8d95814 | 155 | object_unparent(OBJECT(&mrpio->mr)); |
28770689 | 156 | object_unref(mrpio); |
e3fb0ade | 157 | } |
6bf9fd43 AK |
158 | g_free(piolist->regions); |
159 | } | |
160 | ||
b40acf99 JK |
161 | static const MemoryRegionPortio *find_portio(MemoryRegionPortioList *mrpio, |
162 | uint64_t offset, unsigned size, | |
163 | bool write) | |
164 | { | |
165 | const MemoryRegionPortio *mrp; | |
166 | ||
167 | for (mrp = mrpio->ports; mrp->size; ++mrp) { | |
168 | if (offset >= mrp->offset && offset < mrp->offset + mrp->len && | |
169 | size == mrp->size && | |
170 | (write ? (bool)mrp->write : (bool)mrp->read)) { | |
171 | return mrp; | |
172 | } | |
173 | } | |
174 | return NULL; | |
175 | } | |
176 | ||
177 | static uint64_t portio_read(void *opaque, hwaddr addr, unsigned size) | |
178 | { | |
179 | MemoryRegionPortioList *mrpio = opaque; | |
180 | const MemoryRegionPortio *mrp = find_portio(mrpio, addr, size, false); | |
181 | uint64_t data; | |
182 | ||
183 | data = ((uint64_t)1 << (size * 8)) - 1; | |
184 | if (mrp) { | |
4edee342 | 185 | data = mrp->read(mrpio->portio_opaque, mrpio->mr.addr + addr); |
b40acf99 JK |
186 | } else if (size == 2) { |
187 | mrp = find_portio(mrpio, addr, 1, false); | |
147ed379 | 188 | if (mrp) { |
4edee342 | 189 | data = mrp->read(mrpio->portio_opaque, mrpio->mr.addr + addr); |
147ed379 | 190 | if (addr + 1 < mrp->offset + mrp->len) { |
4edee342 | 191 | data |= mrp->read(mrpio->portio_opaque, mrpio->mr.addr + addr + 1) << 8; |
147ed379 PB |
192 | } else { |
193 | data |= 0xff00; | |
194 | } | |
195 | } | |
b40acf99 JK |
196 | } |
197 | return data; | |
198 | } | |
199 | ||
200 | static void portio_write(void *opaque, hwaddr addr, uint64_t data, | |
201 | unsigned size) | |
202 | { | |
203 | MemoryRegionPortioList *mrpio = opaque; | |
204 | const MemoryRegionPortio *mrp = find_portio(mrpio, addr, size, true); | |
205 | ||
206 | if (mrp) { | |
4edee342 | 207 | mrp->write(mrpio->portio_opaque, mrpio->mr.addr + addr, data); |
b40acf99 JK |
208 | } else if (size == 2) { |
209 | mrp = find_portio(mrpio, addr, 1, true); | |
147ed379 | 210 | if (mrp) { |
4edee342 | 211 | mrp->write(mrpio->portio_opaque, mrpio->mr.addr + addr, data & 0xff); |
147ed379 | 212 | if (addr + 1 < mrp->offset + mrp->len) { |
4edee342 | 213 | mrp->write(mrpio->portio_opaque, mrpio->mr.addr + addr + 1, data >> 8); |
147ed379 PB |
214 | } |
215 | } | |
b40acf99 JK |
216 | } |
217 | } | |
218 | ||
219 | static const MemoryRegionOps portio_ops = { | |
220 | .read = portio_read, | |
221 | .write = portio_write, | |
f36a6382 | 222 | .endianness = DEVICE_LITTLE_ENDIAN, |
b40acf99 JK |
223 | .valid.unaligned = true, |
224 | .impl.unaligned = true, | |
225 | }; | |
226 | ||
6bf9fd43 AK |
227 | static void portio_list_add_1(PortioList *piolist, |
228 | const MemoryRegionPortio *pio_init, | |
229 | unsigned count, unsigned start, | |
230 | unsigned off_low, unsigned off_high) | |
231 | { | |
b40acf99 | 232 | MemoryRegionPortioList *mrpio; |
690705ca MCA |
233 | Object *owner; |
234 | char *name; | |
6bf9fd43 AK |
235 | unsigned i; |
236 | ||
237 | /* Copy the sub-list and null-terminate it. */ | |
28770689 MCA |
238 | mrpio = MEMORY_REGION_PORTIO_LIST( |
239 | object_new(TYPE_MEMORY_REGION_PORTIO_LIST)); | |
b40acf99 | 240 | mrpio->portio_opaque = piolist->opaque; |
d2f07b75 | 241 | mrpio->ports = g_malloc0(sizeof(MemoryRegionPortio) * (count + 1)); |
b40acf99 JK |
242 | memcpy(mrpio->ports, pio_init, sizeof(MemoryRegionPortio) * count); |
243 | memset(mrpio->ports + count, 0, sizeof(MemoryRegionPortio)); | |
6bf9fd43 AK |
244 | |
245 | /* Adjust the offsets to all be zero-based for the region. */ | |
246 | for (i = 0; i < count; ++i) { | |
b40acf99 | 247 | mrpio->ports[i].offset -= off_low; |
6bf9fd43 AK |
248 | } |
249 | ||
690705ca MCA |
250 | /* |
251 | * The MemoryRegion owner is the MemoryRegionPortioList since that manages | |
252 | * the lifecycle via the refcount | |
253 | */ | |
254 | memory_region_init_io(&mrpio->mr, OBJECT(mrpio), &portio_ops, mrpio, | |
db10ca90 | 255 | piolist->name, off_high - off_low); |
690705ca MCA |
256 | |
257 | /* Reparent the MemoryRegion to the piolist owner */ | |
258 | object_ref(&mrpio->mr); | |
259 | object_unparent(OBJECT(&mrpio->mr)); | |
260 | if (!piolist->owner) { | |
261 | owner = container_get(qdev_get_machine(), "/unattached"); | |
262 | } else { | |
263 | owner = piolist->owner; | |
264 | } | |
265 | name = g_strdup_printf("%s[*]", piolist->name); | |
266 | object_property_add_child(owner, name, OBJECT(&mrpio->mr)); | |
267 | g_free(name); | |
268 | ||
c76bc480 JK |
269 | if (piolist->flush_coalesced_mmio) { |
270 | memory_region_set_flush_coalesced(&mrpio->mr); | |
271 | } | |
6bf9fd43 | 272 | memory_region_add_subregion(piolist->address_space, |
b40acf99 JK |
273 | start + off_low, &mrpio->mr); |
274 | piolist->regions[piolist->nr] = &mrpio->mr; | |
de58ac72 | 275 | ++piolist->nr; |
6bf9fd43 AK |
276 | } |
277 | ||
278 | void portio_list_add(PortioList *piolist, | |
279 | MemoryRegion *address_space, | |
280 | uint32_t start) | |
281 | { | |
282 | const MemoryRegionPortio *pio, *pio_start = piolist->ports; | |
283 | unsigned int off_low, off_high, off_last, count; | |
284 | ||
285 | piolist->address_space = address_space; | |
ad2b6523 | 286 | piolist->addr = start; |
6bf9fd43 AK |
287 | |
288 | /* Handle the first entry specially. */ | |
289 | off_last = off_low = pio_start->offset; | |
4080a13c | 290 | off_high = off_low + pio_start->len + pio_start->size - 1; |
6bf9fd43 AK |
291 | count = 1; |
292 | ||
293 | for (pio = pio_start + 1; pio->size != 0; pio++, count++) { | |
294 | /* All entries must be sorted by offset. */ | |
295 | assert(pio->offset >= off_last); | |
296 | off_last = pio->offset; | |
297 | ||
298 | /* If we see a hole, break the region. */ | |
299 | if (off_last > off_high) { | |
300 | portio_list_add_1(piolist, pio_start, count, start, off_low, | |
301 | off_high); | |
302 | /* ... and start collecting anew. */ | |
303 | pio_start = pio; | |
304 | off_low = off_last; | |
4080a13c | 305 | off_high = off_low + pio->len + pio_start->size - 1; |
6bf9fd43 AK |
306 | count = 0; |
307 | } else if (off_last + pio->len > off_high) { | |
4080a13c | 308 | off_high = off_last + pio->len + pio_start->size - 1; |
6bf9fd43 AK |
309 | } |
310 | } | |
311 | ||
312 | /* There will always be an open sub-list. */ | |
313 | portio_list_add_1(piolist, pio_start, count, start, off_low, off_high); | |
314 | } | |
315 | ||
316 | void portio_list_del(PortioList *piolist) | |
317 | { | |
b40acf99 | 318 | MemoryRegionPortioList *mrpio; |
6bf9fd43 AK |
319 | unsigned i; |
320 | ||
321 | for (i = 0; i < piolist->nr; ++i) { | |
b40acf99 JK |
322 | mrpio = container_of(piolist->regions[i], MemoryRegionPortioList, mr); |
323 | memory_region_del_subregion(piolist->address_space, &mrpio->mr); | |
6bf9fd43 AK |
324 | } |
325 | } | |
28770689 | 326 | |
f165cdf1 BB |
327 | void portio_list_set_enabled(PortioList *piolist, bool enabled) |
328 | { | |
329 | unsigned i; | |
330 | ||
331 | for (i = 0; i < piolist->nr; ++i) { | |
332 | memory_region_set_enabled(piolist->regions[i], enabled); | |
333 | } | |
334 | } | |
335 | ||
ad2b6523 BB |
336 | void portio_list_set_address(PortioList *piolist, uint32_t addr) |
337 | { | |
338 | MemoryRegionPortioList *mrpio; | |
339 | unsigned i, j; | |
340 | ||
341 | for (i = 0; i < piolist->nr; ++i) { | |
342 | mrpio = container_of(piolist->regions[i], MemoryRegionPortioList, mr); | |
343 | memory_region_set_address(&mrpio->mr, | |
344 | mrpio->mr.addr - piolist->addr + addr); | |
345 | for (j = 0; mrpio->ports[j].size; ++j) { | |
346 | mrpio->ports[j].offset += addr - piolist->addr; | |
347 | } | |
348 | } | |
349 | ||
350 | piolist->addr = addr; | |
351 | } | |
352 | ||
28770689 MCA |
353 | static void memory_region_portio_list_finalize(Object *obj) |
354 | { | |
355 | MemoryRegionPortioList *mrpio = MEMORY_REGION_PORTIO_LIST(obj); | |
356 | ||
690705ca | 357 | object_unref(&mrpio->mr); |
28770689 MCA |
358 | g_free(mrpio->ports); |
359 | } | |
360 | ||
361 | static const TypeInfo memory_region_portio_list_info = { | |
362 | .parent = TYPE_OBJECT, | |
363 | .name = TYPE_MEMORY_REGION_PORTIO_LIST, | |
364 | .instance_size = sizeof(MemoryRegionPortioList), | |
365 | .instance_finalize = memory_region_portio_list_finalize, | |
366 | }; | |
367 | ||
368 | static void ioport_register_types(void) | |
369 | { | |
370 | type_register_static(&memory_region_portio_list_info); | |
371 | } | |
372 | ||
373 | type_init(ioport_register_types) |