root / hw / pci.c @ e9283f8b
History | View | Annotate | Download (28 kB)
| 1 |
/*
|
|---|---|
| 2 |
* QEMU PCI bus manager
|
| 3 |
*
|
| 4 |
* Copyright (c) 2004 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 |
#include "hw.h" |
| 25 |
#include "pci.h" |
| 26 |
#include "monitor.h" |
| 27 |
#include "net.h" |
| 28 |
#include "sysemu.h" |
| 29 |
|
| 30 |
//#define DEBUG_PCI
|
| 31 |
|
| 32 |
struct PCIBus {
|
| 33 |
BusState qbus; |
| 34 |
int bus_num;
|
| 35 |
int devfn_min;
|
| 36 |
pci_set_irq_fn set_irq; |
| 37 |
pci_map_irq_fn map_irq; |
| 38 |
uint32_t config_reg; /* XXX: suppress */
|
| 39 |
/* low level pic */
|
| 40 |
SetIRQFunc *low_set_irq; |
| 41 |
qemu_irq *irq_opaque; |
| 42 |
PCIDevice *devices[256];
|
| 43 |
PCIDevice *parent_dev; |
| 44 |
PCIBus *next; |
| 45 |
/* The bus IRQ state is the logical OR of the connected devices.
|
| 46 |
Keep a count of the number of devices with raised IRQs. */
|
| 47 |
int nirq;
|
| 48 |
int irq_count[];
|
| 49 |
}; |
| 50 |
|
| 51 |
static void pci_update_mappings(PCIDevice *d); |
| 52 |
static void pci_set_irq(void *opaque, int irq_num, int level); |
| 53 |
|
| 54 |
target_phys_addr_t pci_mem_base; |
| 55 |
static uint16_t pci_default_sub_vendor_id = PCI_SUBVENDOR_ID_REDHAT_QUMRANET;
|
| 56 |
static uint16_t pci_default_sub_device_id = PCI_SUBDEVICE_ID_QEMU;
|
| 57 |
static PCIBus *first_bus;
|
| 58 |
|
| 59 |
static void pcibus_save(QEMUFile *f, void *opaque) |
| 60 |
{
|
| 61 |
PCIBus *bus = (PCIBus *)opaque; |
| 62 |
int i;
|
| 63 |
|
| 64 |
qemu_put_be32(f, bus->nirq); |
| 65 |
for (i = 0; i < bus->nirq; i++) |
| 66 |
qemu_put_be32(f, bus->irq_count[i]); |
| 67 |
} |
| 68 |
|
| 69 |
static int pcibus_load(QEMUFile *f, void *opaque, int version_id) |
| 70 |
{
|
| 71 |
PCIBus *bus = (PCIBus *)opaque; |
| 72 |
int i, nirq;
|
| 73 |
|
| 74 |
if (version_id != 1) |
| 75 |
return -EINVAL;
|
| 76 |
|
| 77 |
nirq = qemu_get_be32(f); |
| 78 |
if (bus->nirq != nirq) {
|
| 79 |
fprintf(stderr, "pcibus_load: nirq mismatch: src=%d dst=%d\n",
|
| 80 |
nirq, bus->nirq); |
| 81 |
return -EINVAL;
|
| 82 |
} |
| 83 |
|
| 84 |
for (i = 0; i < nirq; i++) |
| 85 |
bus->irq_count[i] = qemu_get_be32(f); |
| 86 |
|
| 87 |
return 0; |
| 88 |
} |
| 89 |
|
| 90 |
static void pci_bus_reset(void *opaque) |
| 91 |
{
|
| 92 |
PCIBus *bus = (PCIBus *)opaque; |
| 93 |
int i;
|
| 94 |
|
| 95 |
for (i = 0; i < bus->nirq; i++) { |
| 96 |
bus->irq_count[i] = 0;
|
| 97 |
} |
| 98 |
for (i = 0; i < 256; i++) { |
| 99 |
if (bus->devices[i])
|
| 100 |
memset(bus->devices[i]->irq_state, 0,
|
| 101 |
sizeof(bus->devices[i]->irq_state));
|
| 102 |
} |
| 103 |
} |
| 104 |
|
| 105 |
PCIBus *pci_register_bus(DeviceState *parent, const char *name, |
| 106 |
pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, |
| 107 |
qemu_irq *pic, int devfn_min, int nirq) |
| 108 |
{
|
| 109 |
PCIBus *bus; |
| 110 |
static int nbus = 0; |
| 111 |
|
| 112 |
bus = FROM_QBUS(PCIBus, qbus_create(BUS_TYPE_PCI, |
| 113 |
sizeof(PCIBus) + (nirq * sizeof(int)), |
| 114 |
parent, name)); |
| 115 |
bus->set_irq = set_irq; |
| 116 |
bus->map_irq = map_irq; |
| 117 |
bus->irq_opaque = pic; |
| 118 |
bus->devfn_min = devfn_min; |
| 119 |
bus->nirq = nirq; |
| 120 |
bus->next = first_bus; |
| 121 |
first_bus = bus; |
| 122 |
register_savevm("PCIBUS", nbus++, 1, pcibus_save, pcibus_load, bus); |
| 123 |
qemu_register_reset(pci_bus_reset, 0, bus);
|
| 124 |
return bus;
|
| 125 |
} |
| 126 |
|
| 127 |
static PCIBus *pci_register_secondary_bus(PCIDevice *dev, pci_map_irq_fn map_irq)
|
| 128 |
{
|
| 129 |
PCIBus *bus; |
| 130 |
bus = qemu_mallocz(sizeof(PCIBus));
|
| 131 |
bus->map_irq = map_irq; |
| 132 |
bus->parent_dev = dev; |
| 133 |
bus->next = dev->bus->next; |
| 134 |
dev->bus->next = bus; |
| 135 |
return bus;
|
| 136 |
} |
| 137 |
|
| 138 |
int pci_bus_num(PCIBus *s)
|
| 139 |
{
|
| 140 |
return s->bus_num;
|
| 141 |
} |
| 142 |
|
| 143 |
void pci_device_save(PCIDevice *s, QEMUFile *f)
|
| 144 |
{
|
| 145 |
int i;
|
| 146 |
|
| 147 |
qemu_put_be32(f, 2); /* PCI device version */ |
| 148 |
qemu_put_buffer(f, s->config, 256);
|
| 149 |
for (i = 0; i < 4; i++) |
| 150 |
qemu_put_be32(f, s->irq_state[i]); |
| 151 |
} |
| 152 |
|
| 153 |
int pci_device_load(PCIDevice *s, QEMUFile *f)
|
| 154 |
{
|
| 155 |
uint8_t config[PCI_CONFIG_SPACE_SIZE]; |
| 156 |
uint32_t version_id; |
| 157 |
int i;
|
| 158 |
|
| 159 |
version_id = qemu_get_be32(f); |
| 160 |
if (version_id > 2) |
| 161 |
return -EINVAL;
|
| 162 |
qemu_get_buffer(f, config, sizeof config);
|
| 163 |
for (i = 0; i < sizeof config; ++i) |
| 164 |
if ((config[i] ^ s->config[i]) & s->cmask[i] & ~s->wmask[i])
|
| 165 |
return -EINVAL;
|
| 166 |
memcpy(s->config, config, sizeof config);
|
| 167 |
|
| 168 |
pci_update_mappings(s); |
| 169 |
|
| 170 |
if (version_id >= 2) |
| 171 |
for (i = 0; i < 4; i ++) |
| 172 |
s->irq_state[i] = qemu_get_be32(f); |
| 173 |
return 0; |
| 174 |
} |
| 175 |
|
| 176 |
static int pci_set_default_subsystem_id(PCIDevice *pci_dev) |
| 177 |
{
|
| 178 |
uint16_t *id; |
| 179 |
|
| 180 |
id = (void*)(&pci_dev->config[PCI_SUBVENDOR_ID]);
|
| 181 |
id[0] = cpu_to_le16(pci_default_sub_vendor_id);
|
| 182 |
id[1] = cpu_to_le16(pci_default_sub_device_id);
|
| 183 |
return 0; |
| 184 |
} |
| 185 |
|
| 186 |
/*
|
| 187 |
* Parse [[<domain>:]<bus>:]<slot>, return -1 on error
|
| 188 |
*/
|
| 189 |
static int pci_parse_devaddr(const char *addr, int *domp, int *busp, unsigned *slotp) |
| 190 |
{
|
| 191 |
const char *p; |
| 192 |
char *e;
|
| 193 |
unsigned long val; |
| 194 |
unsigned long dom = 0, bus = 0; |
| 195 |
unsigned slot = 0; |
| 196 |
|
| 197 |
p = addr; |
| 198 |
val = strtoul(p, &e, 16);
|
| 199 |
if (e == p)
|
| 200 |
return -1; |
| 201 |
if (*e == ':') { |
| 202 |
bus = val; |
| 203 |
p = e + 1;
|
| 204 |
val = strtoul(p, &e, 16);
|
| 205 |
if (e == p)
|
| 206 |
return -1; |
| 207 |
if (*e == ':') { |
| 208 |
dom = bus; |
| 209 |
bus = val; |
| 210 |
p = e + 1;
|
| 211 |
val = strtoul(p, &e, 16);
|
| 212 |
if (e == p)
|
| 213 |
return -1; |
| 214 |
} |
| 215 |
} |
| 216 |
|
| 217 |
if (dom > 0xffff || bus > 0xff || val > 0x1f) |
| 218 |
return -1; |
| 219 |
|
| 220 |
slot = val; |
| 221 |
|
| 222 |
if (*e)
|
| 223 |
return -1; |
| 224 |
|
| 225 |
/* Note: QEMU doesn't implement domains other than 0 */
|
| 226 |
if (dom != 0 || pci_find_bus(bus) == NULL) |
| 227 |
return -1; |
| 228 |
|
| 229 |
*domp = dom; |
| 230 |
*busp = bus; |
| 231 |
*slotp = slot; |
| 232 |
return 0; |
| 233 |
} |
| 234 |
|
| 235 |
int pci_read_devaddr(Monitor *mon, const char *addr, int *domp, int *busp, |
| 236 |
unsigned *slotp)
|
| 237 |
{
|
| 238 |
/* strip legacy tag */
|
| 239 |
if (!strncmp(addr, "pci_addr=", 9)) { |
| 240 |
addr += 9;
|
| 241 |
} |
| 242 |
if (pci_parse_devaddr(addr, domp, busp, slotp)) {
|
| 243 |
monitor_printf(mon, "Invalid pci address\n");
|
| 244 |
return -1; |
| 245 |
} |
| 246 |
return 0; |
| 247 |
} |
| 248 |
|
| 249 |
static PCIBus *pci_get_bus_devfn(int *devfnp, const char *devaddr) |
| 250 |
{
|
| 251 |
int dom, bus;
|
| 252 |
unsigned slot;
|
| 253 |
|
| 254 |
if (!devaddr) {
|
| 255 |
*devfnp = -1;
|
| 256 |
return pci_find_bus(0); |
| 257 |
} |
| 258 |
|
| 259 |
if (pci_parse_devaddr(devaddr, &dom, &bus, &slot) < 0) { |
| 260 |
return NULL; |
| 261 |
} |
| 262 |
|
| 263 |
*devfnp = slot << 3;
|
| 264 |
return pci_find_bus(bus);
|
| 265 |
} |
| 266 |
|
| 267 |
static void pci_init_cmask(PCIDevice *dev) |
| 268 |
{
|
| 269 |
pci_set_word(dev->cmask + PCI_VENDOR_ID, 0xffff);
|
| 270 |
pci_set_word(dev->cmask + PCI_DEVICE_ID, 0xffff);
|
| 271 |
dev->cmask[PCI_STATUS] = PCI_STATUS_CAP_LIST; |
| 272 |
dev->cmask[PCI_REVISION_ID] = 0xff;
|
| 273 |
dev->cmask[PCI_CLASS_PROG] = 0xff;
|
| 274 |
pci_set_word(dev->cmask + PCI_CLASS_DEVICE, 0xffff);
|
| 275 |
dev->cmask[PCI_HEADER_TYPE] = 0xff;
|
| 276 |
dev->cmask[PCI_CAPABILITY_LIST] = 0xff;
|
| 277 |
} |
| 278 |
|
| 279 |
static void pci_init_wmask(PCIDevice *dev) |
| 280 |
{
|
| 281 |
int i;
|
| 282 |
dev->wmask[PCI_CACHE_LINE_SIZE] = 0xff;
|
| 283 |
dev->wmask[PCI_INTERRUPT_LINE] = 0xff;
|
| 284 |
dev->wmask[PCI_COMMAND] = PCI_COMMAND_IO | PCI_COMMAND_MEMORY |
| 285 |
| PCI_COMMAND_MASTER; |
| 286 |
for (i = PCI_CONFIG_HEADER_SIZE; i < PCI_CONFIG_SPACE_SIZE; ++i)
|
| 287 |
dev->wmask[i] = 0xff;
|
| 288 |
} |
| 289 |
|
| 290 |
/* -1 for devfn means auto assign */
|
| 291 |
static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus,
|
| 292 |
const char *name, int devfn, |
| 293 |
PCIConfigReadFunc *config_read, |
| 294 |
PCIConfigWriteFunc *config_write) |
| 295 |
{
|
| 296 |
if (devfn < 0) { |
| 297 |
for(devfn = bus->devfn_min ; devfn < 256; devfn += 8) { |
| 298 |
if (!bus->devices[devfn])
|
| 299 |
goto found;
|
| 300 |
} |
| 301 |
return NULL; |
| 302 |
found: ;
|
| 303 |
} else if (bus->devices[devfn]) { |
| 304 |
return NULL; |
| 305 |
} |
| 306 |
pci_dev->bus = bus; |
| 307 |
pci_dev->devfn = devfn; |
| 308 |
pstrcpy(pci_dev->name, sizeof(pci_dev->name), name);
|
| 309 |
memset(pci_dev->irq_state, 0, sizeof(pci_dev->irq_state)); |
| 310 |
pci_set_default_subsystem_id(pci_dev); |
| 311 |
pci_init_cmask(pci_dev); |
| 312 |
pci_init_wmask(pci_dev); |
| 313 |
|
| 314 |
if (!config_read)
|
| 315 |
config_read = pci_default_read_config; |
| 316 |
if (!config_write)
|
| 317 |
config_write = pci_default_write_config; |
| 318 |
pci_dev->config_read = config_read; |
| 319 |
pci_dev->config_write = config_write; |
| 320 |
bus->devices[devfn] = pci_dev; |
| 321 |
pci_dev->irq = qemu_allocate_irqs(pci_set_irq, pci_dev, 4);
|
| 322 |
return pci_dev;
|
| 323 |
} |
| 324 |
|
| 325 |
PCIDevice *pci_register_device(PCIBus *bus, const char *name, |
| 326 |
int instance_size, int devfn, |
| 327 |
PCIConfigReadFunc *config_read, |
| 328 |
PCIConfigWriteFunc *config_write) |
| 329 |
{
|
| 330 |
PCIDevice *pci_dev; |
| 331 |
|
| 332 |
pci_dev = qemu_mallocz(instance_size); |
| 333 |
pci_dev = do_pci_register_device(pci_dev, bus, name, devfn, |
| 334 |
config_read, config_write); |
| 335 |
return pci_dev;
|
| 336 |
} |
| 337 |
static target_phys_addr_t pci_to_cpu_addr(target_phys_addr_t addr)
|
| 338 |
{
|
| 339 |
return addr + pci_mem_base;
|
| 340 |
} |
| 341 |
|
| 342 |
static void pci_unregister_io_regions(PCIDevice *pci_dev) |
| 343 |
{
|
| 344 |
PCIIORegion *r; |
| 345 |
int i;
|
| 346 |
|
| 347 |
for(i = 0; i < PCI_NUM_REGIONS; i++) { |
| 348 |
r = &pci_dev->io_regions[i]; |
| 349 |
if (!r->size || r->addr == -1) |
| 350 |
continue;
|
| 351 |
if (r->type == PCI_ADDRESS_SPACE_IO) {
|
| 352 |
isa_unassign_ioport(r->addr, r->size); |
| 353 |
} else {
|
| 354 |
cpu_register_physical_memory(pci_to_cpu_addr(r->addr), |
| 355 |
r->size, |
| 356 |
IO_MEM_UNASSIGNED); |
| 357 |
} |
| 358 |
} |
| 359 |
} |
| 360 |
|
| 361 |
int pci_unregister_device(PCIDevice *pci_dev)
|
| 362 |
{
|
| 363 |
int ret = 0; |
| 364 |
|
| 365 |
if (pci_dev->unregister)
|
| 366 |
ret = pci_dev->unregister(pci_dev); |
| 367 |
if (ret)
|
| 368 |
return ret;
|
| 369 |
|
| 370 |
pci_unregister_io_regions(pci_dev); |
| 371 |
|
| 372 |
qemu_free_irqs(pci_dev->irq); |
| 373 |
pci_dev->bus->devices[pci_dev->devfn] = NULL;
|
| 374 |
qdev_free(&pci_dev->qdev); |
| 375 |
return 0; |
| 376 |
} |
| 377 |
|
| 378 |
void pci_register_bar(PCIDevice *pci_dev, int region_num, |
| 379 |
uint32_t size, int type,
|
| 380 |
PCIMapIORegionFunc *map_func) |
| 381 |
{
|
| 382 |
PCIIORegion *r; |
| 383 |
uint32_t addr; |
| 384 |
uint32_t wmask; |
| 385 |
|
| 386 |
if ((unsigned int)region_num >= PCI_NUM_REGIONS) |
| 387 |
return;
|
| 388 |
|
| 389 |
if (size & (size-1)) { |
| 390 |
fprintf(stderr, "ERROR: PCI region size must be pow2 "
|
| 391 |
"type=0x%x, size=0x%x\n", type, size);
|
| 392 |
exit(1);
|
| 393 |
} |
| 394 |
|
| 395 |
r = &pci_dev->io_regions[region_num]; |
| 396 |
r->addr = -1;
|
| 397 |
r->size = size; |
| 398 |
r->type = type; |
| 399 |
r->map_func = map_func; |
| 400 |
|
| 401 |
wmask = ~(size - 1);
|
| 402 |
if (region_num == PCI_ROM_SLOT) {
|
| 403 |
addr = 0x30;
|
| 404 |
/* ROM enable bit is writeable */
|
| 405 |
wmask |= 1;
|
| 406 |
} else {
|
| 407 |
addr = 0x10 + region_num * 4; |
| 408 |
} |
| 409 |
*(uint32_t *)(pci_dev->config + addr) = cpu_to_le32(type); |
| 410 |
*(uint32_t *)(pci_dev->wmask + addr) = cpu_to_le32(wmask); |
| 411 |
*(uint32_t *)(pci_dev->cmask + addr) = 0xffffffff;
|
| 412 |
} |
| 413 |
|
| 414 |
static void pci_update_mappings(PCIDevice *d) |
| 415 |
{
|
| 416 |
PCIIORegion *r; |
| 417 |
int cmd, i;
|
| 418 |
uint32_t last_addr, new_addr, config_ofs; |
| 419 |
|
| 420 |
cmd = le16_to_cpu(*(uint16_t *)(d->config + PCI_COMMAND)); |
| 421 |
for(i = 0; i < PCI_NUM_REGIONS; i++) { |
| 422 |
r = &d->io_regions[i]; |
| 423 |
if (i == PCI_ROM_SLOT) {
|
| 424 |
config_ofs = 0x30;
|
| 425 |
} else {
|
| 426 |
config_ofs = 0x10 + i * 4; |
| 427 |
} |
| 428 |
if (r->size != 0) { |
| 429 |
if (r->type & PCI_ADDRESS_SPACE_IO) {
|
| 430 |
if (cmd & PCI_COMMAND_IO) {
|
| 431 |
new_addr = le32_to_cpu(*(uint32_t *)(d->config + |
| 432 |
config_ofs)); |
| 433 |
new_addr = new_addr & ~(r->size - 1);
|
| 434 |
last_addr = new_addr + r->size - 1;
|
| 435 |
/* NOTE: we have only 64K ioports on PC */
|
| 436 |
if (last_addr <= new_addr || new_addr == 0 || |
| 437 |
last_addr >= 0x10000) {
|
| 438 |
new_addr = -1;
|
| 439 |
} |
| 440 |
} else {
|
| 441 |
new_addr = -1;
|
| 442 |
} |
| 443 |
} else {
|
| 444 |
if (cmd & PCI_COMMAND_MEMORY) {
|
| 445 |
new_addr = le32_to_cpu(*(uint32_t *)(d->config + |
| 446 |
config_ofs)); |
| 447 |
/* the ROM slot has a specific enable bit */
|
| 448 |
if (i == PCI_ROM_SLOT && !(new_addr & 1)) |
| 449 |
goto no_mem_map;
|
| 450 |
new_addr = new_addr & ~(r->size - 1);
|
| 451 |
last_addr = new_addr + r->size - 1;
|
| 452 |
/* NOTE: we do not support wrapping */
|
| 453 |
/* XXX: as we cannot support really dynamic
|
| 454 |
mappings, we handle specific values as invalid
|
| 455 |
mappings. */
|
| 456 |
if (last_addr <= new_addr || new_addr == 0 || |
| 457 |
last_addr == -1) {
|
| 458 |
new_addr = -1;
|
| 459 |
} |
| 460 |
} else {
|
| 461 |
no_mem_map:
|
| 462 |
new_addr = -1;
|
| 463 |
} |
| 464 |
} |
| 465 |
/* now do the real mapping */
|
| 466 |
if (new_addr != r->addr) {
|
| 467 |
if (r->addr != -1) { |
| 468 |
if (r->type & PCI_ADDRESS_SPACE_IO) {
|
| 469 |
int class;
|
| 470 |
/* NOTE: specific hack for IDE in PC case:
|
| 471 |
only one byte must be mapped. */
|
| 472 |
class = d->config[0x0a] | (d->config[0x0b] << 8); |
| 473 |
if (class == 0x0101 && r->size == 4) { |
| 474 |
isa_unassign_ioport(r->addr + 2, 1); |
| 475 |
} else {
|
| 476 |
isa_unassign_ioport(r->addr, r->size); |
| 477 |
} |
| 478 |
} else {
|
| 479 |
cpu_register_physical_memory(pci_to_cpu_addr(r->addr), |
| 480 |
r->size, |
| 481 |
IO_MEM_UNASSIGNED); |
| 482 |
qemu_unregister_coalesced_mmio(r->addr, r->size); |
| 483 |
} |
| 484 |
} |
| 485 |
r->addr = new_addr; |
| 486 |
if (r->addr != -1) { |
| 487 |
r->map_func(d, i, r->addr, r->size, r->type); |
| 488 |
} |
| 489 |
} |
| 490 |
} |
| 491 |
} |
| 492 |
} |
| 493 |
|
| 494 |
uint32_t pci_default_read_config(PCIDevice *d, |
| 495 |
uint32_t address, int len)
|
| 496 |
{
|
| 497 |
uint32_t val; |
| 498 |
|
| 499 |
switch(len) {
|
| 500 |
default:
|
| 501 |
case 4: |
| 502 |
if (address <= 0xfc) { |
| 503 |
val = le32_to_cpu(*(uint32_t *)(d->config + address)); |
| 504 |
break;
|
| 505 |
} |
| 506 |
/* fall through */
|
| 507 |
case 2: |
| 508 |
if (address <= 0xfe) { |
| 509 |
val = le16_to_cpu(*(uint16_t *)(d->config + address)); |
| 510 |
break;
|
| 511 |
} |
| 512 |
/* fall through */
|
| 513 |
case 1: |
| 514 |
val = d->config[address]; |
| 515 |
break;
|
| 516 |
} |
| 517 |
return val;
|
| 518 |
} |
| 519 |
|
| 520 |
void pci_default_write_config(PCIDevice *d, uint32_t addr, uint32_t val, int l) |
| 521 |
{
|
| 522 |
uint8_t orig[PCI_CONFIG_SPACE_SIZE]; |
| 523 |
int i;
|
| 524 |
|
| 525 |
/* not efficient, but simple */
|
| 526 |
memcpy(orig, d->config, PCI_CONFIG_SPACE_SIZE); |
| 527 |
for(i = 0; i < l && addr < PCI_CONFIG_SPACE_SIZE; val >>= 8, ++i, ++addr) { |
| 528 |
uint8_t wmask = d->wmask[addr]; |
| 529 |
d->config[addr] = (d->config[addr] & ~wmask) | (val & wmask); |
| 530 |
} |
| 531 |
if (memcmp(orig + PCI_BASE_ADDRESS_0, d->config + PCI_BASE_ADDRESS_0, 24) |
| 532 |
|| ((orig[PCI_COMMAND] ^ d->config[PCI_COMMAND]) |
| 533 |
& (PCI_COMMAND_MEMORY | PCI_COMMAND_IO))) |
| 534 |
pci_update_mappings(d); |
| 535 |
} |
| 536 |
|
| 537 |
void pci_data_write(void *opaque, uint32_t addr, uint32_t val, int len) |
| 538 |
{
|
| 539 |
PCIBus *s = opaque; |
| 540 |
PCIDevice *pci_dev; |
| 541 |
int config_addr, bus_num;
|
| 542 |
|
| 543 |
#if defined(DEBUG_PCI) && 0 |
| 544 |
printf("pci_data_write: addr=%08x val=%08x len=%d\n",
|
| 545 |
addr, val, len); |
| 546 |
#endif
|
| 547 |
bus_num = (addr >> 16) & 0xff; |
| 548 |
while (s && s->bus_num != bus_num)
|
| 549 |
s = s->next; |
| 550 |
if (!s)
|
| 551 |
return;
|
| 552 |
pci_dev = s->devices[(addr >> 8) & 0xff]; |
| 553 |
if (!pci_dev)
|
| 554 |
return;
|
| 555 |
config_addr = addr & 0xff;
|
| 556 |
#if defined(DEBUG_PCI)
|
| 557 |
printf("pci_config_write: %s: addr=%02x val=%08x len=%d\n",
|
| 558 |
pci_dev->name, config_addr, val, len); |
| 559 |
#endif
|
| 560 |
pci_dev->config_write(pci_dev, config_addr, val, len); |
| 561 |
} |
| 562 |
|
| 563 |
uint32_t pci_data_read(void *opaque, uint32_t addr, int len) |
| 564 |
{
|
| 565 |
PCIBus *s = opaque; |
| 566 |
PCIDevice *pci_dev; |
| 567 |
int config_addr, bus_num;
|
| 568 |
uint32_t val; |
| 569 |
|
| 570 |
bus_num = (addr >> 16) & 0xff; |
| 571 |
while (s && s->bus_num != bus_num)
|
| 572 |
s= s->next; |
| 573 |
if (!s)
|
| 574 |
goto fail;
|
| 575 |
pci_dev = s->devices[(addr >> 8) & 0xff]; |
| 576 |
if (!pci_dev) {
|
| 577 |
fail:
|
| 578 |
switch(len) {
|
| 579 |
case 1: |
| 580 |
val = 0xff;
|
| 581 |
break;
|
| 582 |
case 2: |
| 583 |
val = 0xffff;
|
| 584 |
break;
|
| 585 |
default:
|
| 586 |
case 4: |
| 587 |
val = 0xffffffff;
|
| 588 |
break;
|
| 589 |
} |
| 590 |
goto the_end;
|
| 591 |
} |
| 592 |
config_addr = addr & 0xff;
|
| 593 |
val = pci_dev->config_read(pci_dev, config_addr, len); |
| 594 |
#if defined(DEBUG_PCI)
|
| 595 |
printf("pci_config_read: %s: addr=%02x val=%08x len=%d\n",
|
| 596 |
pci_dev->name, config_addr, val, len); |
| 597 |
#endif
|
| 598 |
the_end:
|
| 599 |
#if defined(DEBUG_PCI) && 0 |
| 600 |
printf("pci_data_read: addr=%08x val=%08x len=%d\n",
|
| 601 |
addr, val, len); |
| 602 |
#endif
|
| 603 |
return val;
|
| 604 |
} |
| 605 |
|
| 606 |
/***********************************************************/
|
| 607 |
/* generic PCI irq support */
|
| 608 |
|
| 609 |
/* 0 <= irq_num <= 3. level must be 0 or 1 */
|
| 610 |
static void pci_set_irq(void *opaque, int irq_num, int level) |
| 611 |
{
|
| 612 |
PCIDevice *pci_dev = (PCIDevice *)opaque; |
| 613 |
PCIBus *bus; |
| 614 |
int change;
|
| 615 |
|
| 616 |
change = level - pci_dev->irq_state[irq_num]; |
| 617 |
if (!change)
|
| 618 |
return;
|
| 619 |
|
| 620 |
pci_dev->irq_state[irq_num] = level; |
| 621 |
for (;;) {
|
| 622 |
bus = pci_dev->bus; |
| 623 |
irq_num = bus->map_irq(pci_dev, irq_num); |
| 624 |
if (bus->set_irq)
|
| 625 |
break;
|
| 626 |
pci_dev = bus->parent_dev; |
| 627 |
} |
| 628 |
bus->irq_count[irq_num] += change; |
| 629 |
bus->set_irq(bus->irq_opaque, irq_num, bus->irq_count[irq_num] != 0);
|
| 630 |
} |
| 631 |
|
| 632 |
/***********************************************************/
|
| 633 |
/* monitor info on PCI */
|
| 634 |
|
| 635 |
typedef struct { |
| 636 |
uint16_t class; |
| 637 |
const char *desc; |
| 638 |
} pci_class_desc; |
| 639 |
|
| 640 |
static const pci_class_desc pci_class_descriptions[] = |
| 641 |
{
|
| 642 |
{ 0x0100, "SCSI controller"},
|
| 643 |
{ 0x0101, "IDE controller"},
|
| 644 |
{ 0x0102, "Floppy controller"},
|
| 645 |
{ 0x0103, "IPI controller"},
|
| 646 |
{ 0x0104, "RAID controller"},
|
| 647 |
{ 0x0106, "SATA controller"},
|
| 648 |
{ 0x0107, "SAS controller"},
|
| 649 |
{ 0x0180, "Storage controller"},
|
| 650 |
{ 0x0200, "Ethernet controller"},
|
| 651 |
{ 0x0201, "Token Ring controller"},
|
| 652 |
{ 0x0202, "FDDI controller"},
|
| 653 |
{ 0x0203, "ATM controller"},
|
| 654 |
{ 0x0280, "Network controller"},
|
| 655 |
{ 0x0300, "VGA controller"},
|
| 656 |
{ 0x0301, "XGA controller"},
|
| 657 |
{ 0x0302, "3D controller"},
|
| 658 |
{ 0x0380, "Display controller"},
|
| 659 |
{ 0x0400, "Video controller"},
|
| 660 |
{ 0x0401, "Audio controller"},
|
| 661 |
{ 0x0402, "Phone"},
|
| 662 |
{ 0x0480, "Multimedia controller"},
|
| 663 |
{ 0x0500, "RAM controller"},
|
| 664 |
{ 0x0501, "Flash controller"},
|
| 665 |
{ 0x0580, "Memory controller"},
|
| 666 |
{ 0x0600, "Host bridge"},
|
| 667 |
{ 0x0601, "ISA bridge"},
|
| 668 |
{ 0x0602, "EISA bridge"},
|
| 669 |
{ 0x0603, "MC bridge"},
|
| 670 |
{ 0x0604, "PCI bridge"},
|
| 671 |
{ 0x0605, "PCMCIA bridge"},
|
| 672 |
{ 0x0606, "NUBUS bridge"},
|
| 673 |
{ 0x0607, "CARDBUS bridge"},
|
| 674 |
{ 0x0608, "RACEWAY bridge"},
|
| 675 |
{ 0x0680, "Bridge"},
|
| 676 |
{ 0x0c03, "USB controller"},
|
| 677 |
{ 0, NULL}
|
| 678 |
}; |
| 679 |
|
| 680 |
static void pci_info_device(PCIDevice *d) |
| 681 |
{
|
| 682 |
Monitor *mon = cur_mon; |
| 683 |
int i, class;
|
| 684 |
PCIIORegion *r; |
| 685 |
const pci_class_desc *desc;
|
| 686 |
|
| 687 |
monitor_printf(mon, " Bus %2d, device %3d, function %d:\n",
|
| 688 |
d->bus->bus_num, d->devfn >> 3, d->devfn & 7); |
| 689 |
class = le16_to_cpu(*((uint16_t *)(d->config + PCI_CLASS_DEVICE))); |
| 690 |
monitor_printf(mon, " ");
|
| 691 |
desc = pci_class_descriptions; |
| 692 |
while (desc->desc && class != desc->class)
|
| 693 |
desc++; |
| 694 |
if (desc->desc) {
|
| 695 |
monitor_printf(mon, "%s", desc->desc);
|
| 696 |
} else {
|
| 697 |
monitor_printf(mon, "Class %04x", class);
|
| 698 |
} |
| 699 |
monitor_printf(mon, ": PCI device %04x:%04x\n",
|
| 700 |
le16_to_cpu(*((uint16_t *)(d->config + PCI_VENDOR_ID))), |
| 701 |
le16_to_cpu(*((uint16_t *)(d->config + PCI_DEVICE_ID)))); |
| 702 |
|
| 703 |
if (d->config[PCI_INTERRUPT_PIN] != 0) { |
| 704 |
monitor_printf(mon, " IRQ %d.\n",
|
| 705 |
d->config[PCI_INTERRUPT_LINE]); |
| 706 |
} |
| 707 |
if (class == 0x0604) { |
| 708 |
monitor_printf(mon, " BUS %d.\n", d->config[0x19]); |
| 709 |
} |
| 710 |
for(i = 0;i < PCI_NUM_REGIONS; i++) { |
| 711 |
r = &d->io_regions[i]; |
| 712 |
if (r->size != 0) { |
| 713 |
monitor_printf(mon, " BAR%d: ", i);
|
| 714 |
if (r->type & PCI_ADDRESS_SPACE_IO) {
|
| 715 |
monitor_printf(mon, "I/O at 0x%04x [0x%04x].\n",
|
| 716 |
r->addr, r->addr + r->size - 1);
|
| 717 |
} else {
|
| 718 |
monitor_printf(mon, "32 bit memory at 0x%08x [0x%08x].\n",
|
| 719 |
r->addr, r->addr + r->size - 1);
|
| 720 |
} |
| 721 |
} |
| 722 |
} |
| 723 |
if (class == 0x0604 && d->config[0x19] != 0) { |
| 724 |
pci_for_each_device(d->config[0x19], pci_info_device);
|
| 725 |
} |
| 726 |
} |
| 727 |
|
| 728 |
void pci_for_each_device(int bus_num, void (*fn)(PCIDevice *d)) |
| 729 |
{
|
| 730 |
PCIBus *bus = first_bus; |
| 731 |
PCIDevice *d; |
| 732 |
int devfn;
|
| 733 |
|
| 734 |
while (bus && bus->bus_num != bus_num)
|
| 735 |
bus = bus->next; |
| 736 |
if (bus) {
|
| 737 |
for(devfn = 0; devfn < 256; devfn++) { |
| 738 |
d = bus->devices[devfn]; |
| 739 |
if (d)
|
| 740 |
fn(d); |
| 741 |
} |
| 742 |
} |
| 743 |
} |
| 744 |
|
| 745 |
void pci_info(Monitor *mon)
|
| 746 |
{
|
| 747 |
pci_for_each_device(0, pci_info_device);
|
| 748 |
} |
| 749 |
|
| 750 |
PCIDevice *pci_create(const char *name, const char *devaddr) |
| 751 |
{
|
| 752 |
PCIBus *bus; |
| 753 |
int devfn;
|
| 754 |
DeviceState *dev; |
| 755 |
|
| 756 |
bus = pci_get_bus_devfn(&devfn, devaddr); |
| 757 |
if (!bus) {
|
| 758 |
fprintf(stderr, "Invalid PCI device address %s for device %s\n",
|
| 759 |
devaddr, name); |
| 760 |
exit(1);
|
| 761 |
} |
| 762 |
|
| 763 |
dev = qdev_create(&bus->qbus, name); |
| 764 |
qdev_set_prop_int(dev, "devfn", devfn);
|
| 765 |
return (PCIDevice *)dev;
|
| 766 |
} |
| 767 |
|
| 768 |
static const char * const pci_nic_models[] = { |
| 769 |
"ne2k_pci",
|
| 770 |
"i82551",
|
| 771 |
"i82557b",
|
| 772 |
"i82559er",
|
| 773 |
"rtl8139",
|
| 774 |
"e1000",
|
| 775 |
"pcnet",
|
| 776 |
"virtio",
|
| 777 |
NULL
|
| 778 |
}; |
| 779 |
|
| 780 |
static const char * const pci_nic_names[] = { |
| 781 |
"ne2k_pci",
|
| 782 |
"i82551",
|
| 783 |
"i82557b",
|
| 784 |
"i82559er",
|
| 785 |
"rtl8139",
|
| 786 |
"e1000",
|
| 787 |
"pcnet",
|
| 788 |
"virtio-net-pci",
|
| 789 |
NULL
|
| 790 |
}; |
| 791 |
|
| 792 |
/* Initialize a PCI NIC. */
|
| 793 |
PCIDevice *pci_nic_init(NICInfo *nd, const char *default_model, |
| 794 |
const char *default_devaddr) |
| 795 |
{
|
| 796 |
const char *devaddr = nd->devaddr ? nd->devaddr : default_devaddr; |
| 797 |
PCIDevice *pci_dev; |
| 798 |
DeviceState *dev; |
| 799 |
int i;
|
| 800 |
|
| 801 |
qemu_check_nic_model_list(nd, pci_nic_models, default_model); |
| 802 |
|
| 803 |
for (i = 0; pci_nic_models[i]; i++) { |
| 804 |
if (strcmp(nd->model, pci_nic_models[i]) == 0) { |
| 805 |
pci_dev = pci_create(pci_nic_names[i], devaddr); |
| 806 |
dev = &pci_dev->qdev; |
| 807 |
qdev_set_netdev(dev, nd); |
| 808 |
qdev_init(dev); |
| 809 |
nd->private = dev; |
| 810 |
return pci_dev;
|
| 811 |
} |
| 812 |
} |
| 813 |
|
| 814 |
return NULL; |
| 815 |
} |
| 816 |
|
| 817 |
typedef struct { |
| 818 |
PCIDevice dev; |
| 819 |
PCIBus *bus; |
| 820 |
} PCIBridge; |
| 821 |
|
| 822 |
static void pci_bridge_write_config(PCIDevice *d, |
| 823 |
uint32_t address, uint32_t val, int len)
|
| 824 |
{
|
| 825 |
PCIBridge *s = (PCIBridge *)d; |
| 826 |
|
| 827 |
pci_default_write_config(d, address, val, len); |
| 828 |
s->bus->bus_num = d->config[PCI_SECONDARY_BUS]; |
| 829 |
} |
| 830 |
|
| 831 |
PCIBus *pci_find_bus(int bus_num)
|
| 832 |
{
|
| 833 |
PCIBus *bus = first_bus; |
| 834 |
|
| 835 |
while (bus && bus->bus_num != bus_num)
|
| 836 |
bus = bus->next; |
| 837 |
|
| 838 |
return bus;
|
| 839 |
} |
| 840 |
|
| 841 |
PCIDevice *pci_find_device(int bus_num, int slot, int function) |
| 842 |
{
|
| 843 |
PCIBus *bus = pci_find_bus(bus_num); |
| 844 |
|
| 845 |
if (!bus)
|
| 846 |
return NULL; |
| 847 |
|
| 848 |
return bus->devices[PCI_DEVFN(slot, function)];
|
| 849 |
} |
| 850 |
|
| 851 |
PCIBus *pci_bridge_init(PCIBus *bus, int devfn, uint16_t vid, uint16_t did,
|
| 852 |
pci_map_irq_fn map_irq, const char *name) |
| 853 |
{
|
| 854 |
PCIBridge *s; |
| 855 |
s = (PCIBridge *)pci_register_device(bus, name, sizeof(PCIBridge),
|
| 856 |
devfn, NULL, pci_bridge_write_config);
|
| 857 |
|
| 858 |
pci_config_set_vendor_id(s->dev.config, vid); |
| 859 |
pci_config_set_device_id(s->dev.config, did); |
| 860 |
|
| 861 |
s->dev.config[0x04] = 0x06; // command = bus master, pci mem |
| 862 |
s->dev.config[0x05] = 0x00; |
| 863 |
s->dev.config[0x06] = 0xa0; // status = fast back-to-back, 66MHz, no error |
| 864 |
s->dev.config[0x07] = 0x00; // status = fast devsel |
| 865 |
s->dev.config[0x08] = 0x00; // revision |
| 866 |
s->dev.config[0x09] = 0x00; // programming i/f |
| 867 |
pci_config_set_class(s->dev.config, PCI_CLASS_BRIDGE_PCI); |
| 868 |
s->dev.config[0x0D] = 0x10; // latency_timer |
| 869 |
s->dev.config[PCI_HEADER_TYPE] = |
| 870 |
PCI_HEADER_TYPE_MULTI_FUNCTION | PCI_HEADER_TYPE_BRIDGE; // header_type
|
| 871 |
s->dev.config[0x1E] = 0xa0; // secondary status |
| 872 |
|
| 873 |
s->bus = pci_register_secondary_bus(&s->dev, map_irq); |
| 874 |
return s->bus;
|
| 875 |
} |
| 876 |
|
| 877 |
typedef struct { |
| 878 |
DeviceInfo qdev; |
| 879 |
pci_qdev_initfn init; |
| 880 |
} PCIDeviceInfo; |
| 881 |
|
| 882 |
static void pci_qdev_init(DeviceState *qdev, DeviceInfo *base) |
| 883 |
{
|
| 884 |
PCIDevice *pci_dev = (PCIDevice *)qdev; |
| 885 |
PCIDeviceInfo *info = container_of(base, PCIDeviceInfo, qdev); |
| 886 |
PCIBus *bus; |
| 887 |
int devfn;
|
| 888 |
|
| 889 |
bus = FROM_QBUS(PCIBus, qdev_get_parent_bus(qdev)); |
| 890 |
devfn = qdev_get_prop_int(qdev, "devfn", -1); |
| 891 |
pci_dev = do_pci_register_device(pci_dev, bus, "FIXME", devfn,
|
| 892 |
NULL, NULL);//FIXME:config_read, config_write); |
| 893 |
assert(pci_dev); |
| 894 |
info->init(pci_dev); |
| 895 |
} |
| 896 |
|
| 897 |
void pci_qdev_register(const char *name, int size, pci_qdev_initfn init) |
| 898 |
{
|
| 899 |
PCIDeviceInfo *info; |
| 900 |
|
| 901 |
info = qemu_mallocz(sizeof(*info));
|
| 902 |
info->qdev.name = qemu_strdup(name); |
| 903 |
info->qdev.size = size; |
| 904 |
info->init = init; |
| 905 |
info->qdev.init = pci_qdev_init; |
| 906 |
info->qdev.bus_type = BUS_TYPE_PCI; |
| 907 |
|
| 908 |
qdev_register(&info->qdev); |
| 909 |
} |
| 910 |
|
| 911 |
PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name) |
| 912 |
{
|
| 913 |
DeviceState *dev; |
| 914 |
|
| 915 |
dev = qdev_create(&bus->qbus, name); |
| 916 |
qdev_set_prop_int(dev, "devfn", devfn);
|
| 917 |
qdev_init(dev); |
| 918 |
|
| 919 |
return (PCIDevice *)dev;
|
| 920 |
} |
| 921 |
|
| 922 |
static int pci_find_space(PCIDevice *pdev, uint8_t size) |
| 923 |
{
|
| 924 |
int offset = PCI_CONFIG_HEADER_SIZE;
|
| 925 |
int i;
|
| 926 |
for (i = PCI_CONFIG_HEADER_SIZE; i < PCI_CONFIG_SPACE_SIZE; ++i)
|
| 927 |
if (pdev->used[i])
|
| 928 |
offset = i + 1;
|
| 929 |
else if (i - offset + 1 == size) |
| 930 |
return offset;
|
| 931 |
return 0; |
| 932 |
} |
| 933 |
|
| 934 |
static uint8_t pci_find_capability_list(PCIDevice *pdev, uint8_t cap_id,
|
| 935 |
uint8_t *prev_p) |
| 936 |
{
|
| 937 |
uint8_t next, prev; |
| 938 |
|
| 939 |
if (!(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST))
|
| 940 |
return 0; |
| 941 |
|
| 942 |
for (prev = PCI_CAPABILITY_LIST; (next = pdev->config[prev]);
|
| 943 |
prev = next + PCI_CAP_LIST_NEXT) |
| 944 |
if (pdev->config[next + PCI_CAP_LIST_ID] == cap_id)
|
| 945 |
break;
|
| 946 |
|
| 947 |
if (prev_p)
|
| 948 |
*prev_p = prev; |
| 949 |
return next;
|
| 950 |
} |
| 951 |
|
| 952 |
/* Reserve space and add capability to the linked list in pci config space */
|
| 953 |
int pci_add_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size)
|
| 954 |
{
|
| 955 |
uint8_t offset = pci_find_space(pdev, size); |
| 956 |
uint8_t *config = pdev->config + offset; |
| 957 |
if (!offset)
|
| 958 |
return -ENOSPC;
|
| 959 |
config[PCI_CAP_LIST_ID] = cap_id; |
| 960 |
config[PCI_CAP_LIST_NEXT] = pdev->config[PCI_CAPABILITY_LIST]; |
| 961 |
pdev->config[PCI_CAPABILITY_LIST] = offset; |
| 962 |
pdev->config[PCI_STATUS] |= PCI_STATUS_CAP_LIST; |
| 963 |
memset(pdev->used + offset, 0xFF, size);
|
| 964 |
/* Make capability read-only by default */
|
| 965 |
memset(pdev->wmask + offset, 0, size);
|
| 966 |
/* Check capability by default */
|
| 967 |
memset(pdev->cmask + offset, 0xFF, size);
|
| 968 |
return offset;
|
| 969 |
} |
| 970 |
|
| 971 |
/* Unlink capability from the pci config space. */
|
| 972 |
void pci_del_capability(PCIDevice *pdev, uint8_t cap_id, uint8_t size)
|
| 973 |
{
|
| 974 |
uint8_t prev, offset = pci_find_capability_list(pdev, cap_id, &prev); |
| 975 |
if (!offset)
|
| 976 |
return;
|
| 977 |
pdev->config[prev] = pdev->config[offset + PCI_CAP_LIST_NEXT]; |
| 978 |
/* Make capability writeable again */
|
| 979 |
memset(pdev->wmask + offset, 0xff, size);
|
| 980 |
/* Clear cmask as device-specific registers can't be checked */
|
| 981 |
memset(pdev->cmask + offset, 0, size);
|
| 982 |
memset(pdev->used + offset, 0, size);
|
| 983 |
|
| 984 |
if (!pdev->config[PCI_CAPABILITY_LIST])
|
| 985 |
pdev->config[PCI_STATUS] &= ~PCI_STATUS_CAP_LIST; |
| 986 |
} |
| 987 |
|
| 988 |
/* Reserve space for capability at a known offset (to call after load). */
|
| 989 |
void pci_reserve_capability(PCIDevice *pdev, uint8_t offset, uint8_t size)
|
| 990 |
{
|
| 991 |
memset(pdev->used + offset, 0xff, size);
|
| 992 |
} |
| 993 |
|
| 994 |
uint8_t pci_find_capability(PCIDevice *pdev, uint8_t cap_id) |
| 995 |
{
|
| 996 |
return pci_find_capability_list(pdev, cap_id, NULL); |
| 997 |
} |