1 /* 2 * QEMU PowerMac CUDA device support 3 * 4 * Copyright (c) 2004-2007 Fabrice Bellard 5 * Copyright (c) 2007 Jocelyn Mayer 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a copy 8 * of this software and associated documentation files (the "Software"), to deal 9 * in the Software without restriction, including without limitation the rights 10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 * copies of the Software, and to permit persons to whom the Software is 12 * furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 * THE SOFTWARE. 24 */ 25 #include "qemu/osdep.h" 26 #include "hw/hw.h" 27 #include "hw/ppc/mac.h" 28 #include "hw/input/adb.h" 29 #include "qemu/timer.h" 30 #include "sysemu/sysemu.h" 31 #include "qemu/cutils.h" 32 #include "qemu/log.h" 33 34 /* XXX: implement all timer modes */ 35 36 /* debug CUDA */ 37 //#define DEBUG_CUDA 38 39 /* debug CUDA packets */ 40 //#define DEBUG_CUDA_PACKET 41 42 #ifdef DEBUG_CUDA 43 #define CUDA_DPRINTF(fmt, ...) \ 44 do { printf("CUDA: " fmt , ## __VA_ARGS__); } while (0) 45 #else 46 #define CUDA_DPRINTF(fmt, ...) 47 #endif 48 49 /* Bits in B data register: all active low */ 50 #define TREQ 0x08 /* Transfer request (input) */ 51 #define TACK 0x10 /* Transfer acknowledge (output) */ 52 #define TIP 0x20 /* Transfer in progress (output) */ 53 54 /* Bits in ACR */ 55 #define SR_CTRL 0x1c /* Shift register control bits */ 56 #define SR_EXT 0x0c /* Shift on external clock */ 57 #define SR_OUT 0x10 /* Shift out if 1 */ 58 59 /* Bits in IFR and IER */ 60 #define IER_SET 0x80 /* set bits in IER */ 61 #define IER_CLR 0 /* clear bits in IER */ 62 #define SR_INT 0x04 /* Shift register full/empty */ 63 #define SR_DATA_INT 0x08 64 #define SR_CLOCK_INT 0x10 65 #define T1_INT 0x40 /* Timer 1 interrupt */ 66 #define T2_INT 0x20 /* Timer 2 interrupt */ 67 68 /* Bits in ACR */ 69 #define T1MODE 0xc0 /* Timer 1 mode */ 70 #define T1MODE_CONT 0x40 /* continuous interrupts */ 71 72 /* commands (1st byte) */ 73 #define ADB_PACKET 0 74 #define CUDA_PACKET 1 75 #define ERROR_PACKET 2 76 #define TIMER_PACKET 3 77 #define POWER_PACKET 4 78 #define MACIIC_PACKET 5 79 #define PMU_PACKET 6 80 81 82 /* CUDA commands (2nd byte) */ 83 #define CUDA_WARM_START 0x0 84 #define CUDA_AUTOPOLL 0x1 85 #define CUDA_GET_6805_ADDR 0x2 86 #define CUDA_GET_TIME 0x3 87 #define CUDA_GET_PRAM 0x7 88 #define CUDA_SET_6805_ADDR 0x8 89 #define CUDA_SET_TIME 0x9 90 #define CUDA_POWERDOWN 0xa 91 #define CUDA_POWERUP_TIME 0xb 92 #define CUDA_SET_PRAM 0xc 93 #define CUDA_MS_RESET 0xd 94 #define CUDA_SEND_DFAC 0xe 95 #define CUDA_BATTERY_SWAP_SENSE 0x10 96 #define CUDA_RESET_SYSTEM 0x11 97 #define CUDA_SET_IPL 0x12 98 #define CUDA_FILE_SERVER_FLAG 0x13 99 #define CUDA_SET_AUTO_RATE 0x14 100 #define CUDA_GET_AUTO_RATE 0x16 101 #define CUDA_SET_DEVICE_LIST 0x19 102 #define CUDA_GET_DEVICE_LIST 0x1a 103 #define CUDA_SET_ONE_SECOND_MODE 0x1b 104 #define CUDA_SET_POWER_MESSAGES 0x21 105 #define CUDA_GET_SET_IIC 0x22 106 #define CUDA_WAKEUP 0x23 107 #define CUDA_TIMER_TICKLE 0x24 108 #define CUDA_COMBINED_FORMAT_IIC 0x25 109 110 #define CUDA_TIMER_FREQ (4700000 / 6) 111 112 /* CUDA returns time_t's offset from Jan 1, 1904, not 1970 */ 113 #define RTC_OFFSET 2082844800 114 115 /* CUDA registers */ 116 #define CUDA_REG_B 0x00 117 #define CUDA_REG_A 0x01 118 #define CUDA_REG_DIRB 0x02 119 #define CUDA_REG_DIRA 0x03 120 #define CUDA_REG_T1CL 0x04 121 #define CUDA_REG_T1CH 0x05 122 #define CUDA_REG_T1LL 0x06 123 #define CUDA_REG_T1LH 0x07 124 #define CUDA_REG_T2CL 0x08 125 #define CUDA_REG_T2CH 0x09 126 #define CUDA_REG_SR 0x0a 127 #define CUDA_REG_ACR 0x0b 128 #define CUDA_REG_PCR 0x0c 129 #define CUDA_REG_IFR 0x0d 130 #define CUDA_REG_IER 0x0e 131 #define CUDA_REG_ANH 0x0f 132 133 static void cuda_update(CUDAState *s); 134 static void cuda_receive_packet_from_host(CUDAState *s, 135 const uint8_t *data, int len); 136 static void cuda_timer_update(CUDAState *s, CUDATimer *ti, 137 int64_t current_time); 138 139 static void cuda_update_irq(CUDAState *s) 140 { 141 if (s->ifr & s->ier & (SR_INT | T1_INT | T2_INT)) { 142 qemu_irq_raise(s->irq); 143 } else { 144 qemu_irq_lower(s->irq); 145 } 146 } 147 148 static uint64_t get_tb(uint64_t time, uint64_t freq) 149 { 150 return muldiv64(time, freq, NANOSECONDS_PER_SECOND); 151 } 152 153 static unsigned int get_counter(CUDATimer *ti) 154 { 155 int64_t d; 156 unsigned int counter; 157 uint64_t tb_diff; 158 uint64_t current_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 159 160 /* Reverse of the tb calculation algorithm that Mac OS X uses on bootup. */ 161 tb_diff = get_tb(current_time, ti->frequency) - ti->load_time; 162 d = (tb_diff * 0xBF401675E5DULL) / (ti->frequency << 24); 163 164 if (ti->index == 0) { 165 /* the timer goes down from latch to -1 (period of latch + 2) */ 166 if (d <= (ti->counter_value + 1)) { 167 counter = (ti->counter_value - d) & 0xffff; 168 } else { 169 counter = (d - (ti->counter_value + 1)) % (ti->latch + 2); 170 counter = (ti->latch - counter) & 0xffff; 171 } 172 } else { 173 counter = (ti->counter_value - d) & 0xffff; 174 } 175 return counter; 176 } 177 178 static void set_counter(CUDAState *s, CUDATimer *ti, unsigned int val) 179 { 180 CUDA_DPRINTF("T%d.counter=%d\n", 1 + ti->index, val); 181 ti->load_time = get_tb(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), 182 s->frequency); 183 ti->counter_value = val; 184 cuda_timer_update(s, ti, ti->load_time); 185 } 186 187 static int64_t get_next_irq_time(CUDATimer *s, int64_t current_time) 188 { 189 int64_t d, next_time; 190 unsigned int counter; 191 192 /* current counter value */ 193 d = muldiv64(current_time - s->load_time, 194 CUDA_TIMER_FREQ, NANOSECONDS_PER_SECOND); 195 /* the timer goes down from latch to -1 (period of latch + 2) */ 196 if (d <= (s->counter_value + 1)) { 197 counter = (s->counter_value - d) & 0xffff; 198 } else { 199 counter = (d - (s->counter_value + 1)) % (s->latch + 2); 200 counter = (s->latch - counter) & 0xffff; 201 } 202 203 /* Note: we consider the irq is raised on 0 */ 204 if (counter == 0xffff) { 205 next_time = d + s->latch + 1; 206 } else if (counter == 0) { 207 next_time = d + s->latch + 2; 208 } else { 209 next_time = d + counter; 210 } 211 CUDA_DPRINTF("latch=%d counter=%" PRId64 " delta_next=%" PRId64 "\n", 212 s->latch, d, next_time - d); 213 next_time = muldiv64(next_time, NANOSECONDS_PER_SECOND, CUDA_TIMER_FREQ) + 214 s->load_time; 215 if (next_time <= current_time) 216 next_time = current_time + 1; 217 return next_time; 218 } 219 220 static void cuda_timer_update(CUDAState *s, CUDATimer *ti, 221 int64_t current_time) 222 { 223 if (!ti->timer) 224 return; 225 if (ti->index == 0 && (s->acr & T1MODE) != T1MODE_CONT) { 226 timer_del(ti->timer); 227 } else { 228 ti->next_irq_time = get_next_irq_time(ti, current_time); 229 timer_mod(ti->timer, ti->next_irq_time); 230 } 231 } 232 233 static void cuda_timer1(void *opaque) 234 { 235 CUDAState *s = opaque; 236 CUDATimer *ti = &s->timers[0]; 237 238 cuda_timer_update(s, ti, ti->next_irq_time); 239 s->ifr |= T1_INT; 240 cuda_update_irq(s); 241 } 242 243 static void cuda_timer2(void *opaque) 244 { 245 CUDAState *s = opaque; 246 CUDATimer *ti = &s->timers[1]; 247 248 cuda_timer_update(s, ti, ti->next_irq_time); 249 s->ifr |= T2_INT; 250 cuda_update_irq(s); 251 } 252 253 static void cuda_set_sr_int(void *opaque) 254 { 255 CUDAState *s = opaque; 256 257 CUDA_DPRINTF("CUDA: %s:%d\n", __func__, __LINE__); 258 s->ifr |= SR_INT; 259 cuda_update_irq(s); 260 } 261 262 static void cuda_delay_set_sr_int(CUDAState *s) 263 { 264 int64_t expire; 265 266 if (s->dirb == 0xff) { 267 /* Not in Mac OS, fire the IRQ directly */ 268 cuda_set_sr_int(s); 269 return; 270 } 271 272 CUDA_DPRINTF("CUDA: %s:%d\n", __func__, __LINE__); 273 274 expire = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 300 * SCALE_US; 275 timer_mod(s->sr_delay_timer, expire); 276 } 277 278 static uint32_t cuda_readb(void *opaque, hwaddr addr) 279 { 280 CUDAState *s = opaque; 281 uint32_t val; 282 283 addr = (addr >> 9) & 0xf; 284 switch(addr) { 285 case CUDA_REG_B: 286 val = s->b; 287 break; 288 case CUDA_REG_A: 289 val = s->a; 290 break; 291 case CUDA_REG_DIRB: 292 val = s->dirb; 293 break; 294 case CUDA_REG_DIRA: 295 val = s->dira; 296 break; 297 case CUDA_REG_T1CL: 298 val = get_counter(&s->timers[0]) & 0xff; 299 s->ifr &= ~T1_INT; 300 cuda_update_irq(s); 301 break; 302 case CUDA_REG_T1CH: 303 val = get_counter(&s->timers[0]) >> 8; 304 cuda_update_irq(s); 305 break; 306 case CUDA_REG_T1LL: 307 val = s->timers[0].latch & 0xff; 308 break; 309 case CUDA_REG_T1LH: 310 /* XXX: check this */ 311 val = (s->timers[0].latch >> 8) & 0xff; 312 break; 313 case CUDA_REG_T2CL: 314 val = get_counter(&s->timers[1]) & 0xff; 315 s->ifr &= ~T2_INT; 316 cuda_update_irq(s); 317 break; 318 case CUDA_REG_T2CH: 319 val = get_counter(&s->timers[1]) >> 8; 320 break; 321 case CUDA_REG_SR: 322 val = s->sr; 323 s->ifr &= ~(SR_INT | SR_CLOCK_INT | SR_DATA_INT); 324 cuda_update_irq(s); 325 break; 326 case CUDA_REG_ACR: 327 val = s->acr; 328 break; 329 case CUDA_REG_PCR: 330 val = s->pcr; 331 break; 332 case CUDA_REG_IFR: 333 val = s->ifr; 334 if (s->ifr & s->ier) { 335 val |= 0x80; 336 } 337 break; 338 case CUDA_REG_IER: 339 val = s->ier | 0x80; 340 break; 341 default: 342 case CUDA_REG_ANH: 343 val = s->anh; 344 break; 345 } 346 if (addr != CUDA_REG_IFR || val != 0) { 347 CUDA_DPRINTF("read: reg=0x%x val=%02x\n", (int)addr, val); 348 } 349 350 return val; 351 } 352 353 static void cuda_writeb(void *opaque, hwaddr addr, uint32_t val) 354 { 355 CUDAState *s = opaque; 356 357 addr = (addr >> 9) & 0xf; 358 CUDA_DPRINTF("write: reg=0x%x val=%02x\n", (int)addr, val); 359 360 switch(addr) { 361 case CUDA_REG_B: 362 s->b = val; 363 cuda_update(s); 364 break; 365 case CUDA_REG_A: 366 s->a = val; 367 break; 368 case CUDA_REG_DIRB: 369 s->dirb = val; 370 break; 371 case CUDA_REG_DIRA: 372 s->dira = val; 373 break; 374 case CUDA_REG_T1CL: 375 s->timers[0].latch = (s->timers[0].latch & 0xff00) | val; 376 cuda_timer_update(s, &s->timers[0], qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); 377 break; 378 case CUDA_REG_T1CH: 379 s->timers[0].latch = (s->timers[0].latch & 0xff) | (val << 8); 380 s->ifr &= ~T1_INT; 381 set_counter(s, &s->timers[0], s->timers[0].latch); 382 break; 383 case CUDA_REG_T1LL: 384 s->timers[0].latch = (s->timers[0].latch & 0xff00) | val; 385 cuda_timer_update(s, &s->timers[0], qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); 386 break; 387 case CUDA_REG_T1LH: 388 s->timers[0].latch = (s->timers[0].latch & 0xff) | (val << 8); 389 s->ifr &= ~T1_INT; 390 cuda_timer_update(s, &s->timers[0], qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); 391 break; 392 case CUDA_REG_T2CL: 393 s->timers[1].latch = (s->timers[1].latch & 0xff00) | val; 394 break; 395 case CUDA_REG_T2CH: 396 /* To ensure T2 generates an interrupt on zero crossing with the 397 common timer code, write the value directly from the latch to 398 the counter */ 399 s->timers[1].latch = (s->timers[1].latch & 0xff) | (val << 8); 400 s->ifr &= ~T2_INT; 401 set_counter(s, &s->timers[1], s->timers[1].latch); 402 break; 403 case CUDA_REG_SR: 404 s->sr = val; 405 break; 406 case CUDA_REG_ACR: 407 s->acr = val; 408 cuda_timer_update(s, &s->timers[0], qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); 409 cuda_update(s); 410 break; 411 case CUDA_REG_PCR: 412 s->pcr = val; 413 break; 414 case CUDA_REG_IFR: 415 /* reset bits */ 416 s->ifr &= ~val; 417 cuda_update_irq(s); 418 break; 419 case CUDA_REG_IER: 420 if (val & IER_SET) { 421 /* set bits */ 422 s->ier |= val & 0x7f; 423 } else { 424 /* reset bits */ 425 s->ier &= ~val; 426 } 427 cuda_update_irq(s); 428 break; 429 default: 430 case CUDA_REG_ANH: 431 s->anh = val; 432 break; 433 } 434 } 435 436 /* NOTE: TIP and TREQ are negated */ 437 static void cuda_update(CUDAState *s) 438 { 439 int packet_received, len; 440 441 packet_received = 0; 442 if (!(s->b & TIP)) { 443 /* transfer requested from host */ 444 445 if (s->acr & SR_OUT) { 446 /* data output */ 447 if ((s->b & (TACK | TIP)) != (s->last_b & (TACK | TIP))) { 448 if (s->data_out_index < sizeof(s->data_out)) { 449 CUDA_DPRINTF("send: %02x\n", s->sr); 450 s->data_out[s->data_out_index++] = s->sr; 451 cuda_delay_set_sr_int(s); 452 } 453 } 454 } else { 455 if (s->data_in_index < s->data_in_size) { 456 /* data input */ 457 if ((s->b & (TACK | TIP)) != (s->last_b & (TACK | TIP))) { 458 s->sr = s->data_in[s->data_in_index++]; 459 CUDA_DPRINTF("recv: %02x\n", s->sr); 460 /* indicate end of transfer */ 461 if (s->data_in_index >= s->data_in_size) { 462 s->b = (s->b | TREQ); 463 } 464 cuda_delay_set_sr_int(s); 465 } 466 } 467 } 468 } else { 469 /* no transfer requested: handle sync case */ 470 if ((s->last_b & TIP) && (s->b & TACK) != (s->last_b & TACK)) { 471 /* update TREQ state each time TACK change state */ 472 if (s->b & TACK) 473 s->b = (s->b | TREQ); 474 else 475 s->b = (s->b & ~TREQ); 476 cuda_delay_set_sr_int(s); 477 } else { 478 if (!(s->last_b & TIP)) { 479 /* handle end of host to cuda transfer */ 480 packet_received = (s->data_out_index > 0); 481 /* always an IRQ at the end of transfer */ 482 cuda_delay_set_sr_int(s); 483 } 484 /* signal if there is data to read */ 485 if (s->data_in_index < s->data_in_size) { 486 s->b = (s->b & ~TREQ); 487 } 488 } 489 } 490 491 s->last_acr = s->acr; 492 s->last_b = s->b; 493 494 /* NOTE: cuda_receive_packet_from_host() can call cuda_update() 495 recursively */ 496 if (packet_received) { 497 len = s->data_out_index; 498 s->data_out_index = 0; 499 cuda_receive_packet_from_host(s, s->data_out, len); 500 } 501 } 502 503 static void cuda_send_packet_to_host(CUDAState *s, 504 const uint8_t *data, int len) 505 { 506 #ifdef DEBUG_CUDA_PACKET 507 { 508 int i; 509 printf("cuda_send_packet_to_host:\n"); 510 for(i = 0; i < len; i++) 511 printf(" %02x", data[i]); 512 printf("\n"); 513 } 514 #endif 515 memcpy(s->data_in, data, len); 516 s->data_in_size = len; 517 s->data_in_index = 0; 518 cuda_update(s); 519 cuda_delay_set_sr_int(s); 520 } 521 522 static void cuda_adb_poll(void *opaque) 523 { 524 CUDAState *s = opaque; 525 uint8_t obuf[ADB_MAX_OUT_LEN + 2]; 526 int olen; 527 528 olen = adb_poll(&s->adb_bus, obuf + 2, s->adb_poll_mask); 529 if (olen > 0) { 530 obuf[0] = ADB_PACKET; 531 obuf[1] = 0x40; /* polled data */ 532 cuda_send_packet_to_host(s, obuf, olen + 2); 533 } 534 timer_mod(s->adb_poll_timer, 535 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 536 (NANOSECONDS_PER_SECOND / (1000 / s->autopoll_rate_ms))); 537 } 538 539 /* description of commands */ 540 typedef struct CudaCommand { 541 uint8_t command; 542 const char *name; 543 bool (*handler)(CUDAState *s, 544 const uint8_t *in_args, int in_len, 545 uint8_t *out_args, int *out_len); 546 } CudaCommand; 547 548 static bool cuda_cmd_autopoll(CUDAState *s, 549 const uint8_t *in_data, int in_len, 550 uint8_t *out_data, int *out_len) 551 { 552 int autopoll; 553 554 if (in_len != 1) { 555 return false; 556 } 557 558 autopoll = (in_data[0] != 0); 559 if (autopoll != s->autopoll) { 560 s->autopoll = autopoll; 561 if (autopoll) { 562 timer_mod(s->adb_poll_timer, 563 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 564 (NANOSECONDS_PER_SECOND / (1000 / s->autopoll_rate_ms))); 565 } else { 566 timer_del(s->adb_poll_timer); 567 } 568 } 569 return true; 570 } 571 572 static bool cuda_cmd_set_autorate(CUDAState *s, 573 const uint8_t *in_data, int in_len, 574 uint8_t *out_data, int *out_len) 575 { 576 if (in_len != 1) { 577 return false; 578 } 579 580 /* we don't want a period of 0 ms */ 581 /* FIXME: check what real hardware does */ 582 if (in_data[0] == 0) { 583 return false; 584 } 585 586 s->autopoll_rate_ms = in_data[0]; 587 if (s->autopoll) { 588 timer_mod(s->adb_poll_timer, 589 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 590 (NANOSECONDS_PER_SECOND / (1000 / s->autopoll_rate_ms))); 591 } 592 return true; 593 } 594 595 static bool cuda_cmd_set_device_list(CUDAState *s, 596 const uint8_t *in_data, int in_len, 597 uint8_t *out_data, int *out_len) 598 { 599 if (in_len != 2) { 600 return false; 601 } 602 603 s->adb_poll_mask = (((uint16_t)in_data[0]) << 8) | in_data[1]; 604 return true; 605 } 606 607 static bool cuda_cmd_powerdown(CUDAState *s, 608 const uint8_t *in_data, int in_len, 609 uint8_t *out_data, int *out_len) 610 { 611 if (in_len != 0) { 612 return false; 613 } 614 615 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); 616 return true; 617 } 618 619 static bool cuda_cmd_reset_system(CUDAState *s, 620 const uint8_t *in_data, int in_len, 621 uint8_t *out_data, int *out_len) 622 { 623 if (in_len != 0) { 624 return false; 625 } 626 627 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 628 return true; 629 } 630 631 static bool cuda_cmd_set_file_server_flag(CUDAState *s, 632 const uint8_t *in_data, int in_len, 633 uint8_t *out_data, int *out_len) 634 { 635 if (in_len != 1) { 636 return false; 637 } 638 639 qemu_log_mask(LOG_UNIMP, 640 "CUDA: unimplemented command FILE_SERVER_FLAG %d\n", 641 in_data[0]); 642 return true; 643 } 644 645 static bool cuda_cmd_set_power_message(CUDAState *s, 646 const uint8_t *in_data, int in_len, 647 uint8_t *out_data, int *out_len) 648 { 649 if (in_len != 1) { 650 return false; 651 } 652 653 qemu_log_mask(LOG_UNIMP, 654 "CUDA: unimplemented command SET_POWER_MESSAGE %d\n", 655 in_data[0]); 656 return true; 657 } 658 659 static bool cuda_cmd_get_time(CUDAState *s, 660 const uint8_t *in_data, int in_len, 661 uint8_t *out_data, int *out_len) 662 { 663 uint32_t ti; 664 665 if (in_len != 0) { 666 return false; 667 } 668 669 ti = s->tick_offset + (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) 670 / NANOSECONDS_PER_SECOND); 671 out_data[0] = ti >> 24; 672 out_data[1] = ti >> 16; 673 out_data[2] = ti >> 8; 674 out_data[3] = ti; 675 *out_len = 4; 676 return true; 677 } 678 679 static bool cuda_cmd_set_time(CUDAState *s, 680 const uint8_t *in_data, int in_len, 681 uint8_t *out_data, int *out_len) 682 { 683 uint32_t ti; 684 685 if (in_len != 4) { 686 return false; 687 } 688 689 ti = (((uint32_t)in_data[0]) << 24) + (((uint32_t)in_data[1]) << 16) 690 + (((uint32_t)in_data[2]) << 8) + in_data[3]; 691 s->tick_offset = ti - (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) 692 / NANOSECONDS_PER_SECOND); 693 return true; 694 } 695 696 static const CudaCommand handlers[] = { 697 { CUDA_AUTOPOLL, "AUTOPOLL", cuda_cmd_autopoll }, 698 { CUDA_SET_AUTO_RATE, "SET_AUTO_RATE", cuda_cmd_set_autorate }, 699 { CUDA_SET_DEVICE_LIST, "SET_DEVICE_LIST", cuda_cmd_set_device_list }, 700 { CUDA_POWERDOWN, "POWERDOWN", cuda_cmd_powerdown }, 701 { CUDA_RESET_SYSTEM, "RESET_SYSTEM", cuda_cmd_reset_system }, 702 { CUDA_FILE_SERVER_FLAG, "FILE_SERVER_FLAG", 703 cuda_cmd_set_file_server_flag }, 704 { CUDA_SET_POWER_MESSAGES, "SET_POWER_MESSAGES", 705 cuda_cmd_set_power_message }, 706 { CUDA_GET_TIME, "GET_TIME", cuda_cmd_get_time }, 707 { CUDA_SET_TIME, "SET_TIME", cuda_cmd_set_time }, 708 }; 709 710 static void cuda_receive_packet(CUDAState *s, 711 const uint8_t *data, int len) 712 { 713 uint8_t obuf[16] = { CUDA_PACKET, 0, data[0] }; 714 int i, out_len = 0; 715 716 for (i = 0; i < ARRAY_SIZE(handlers); i++) { 717 const CudaCommand *desc = &handlers[i]; 718 if (desc->command == data[0]) { 719 CUDA_DPRINTF("handling command %s\n", desc->name); 720 out_len = 0; 721 if (desc->handler(s, data + 1, len - 1, obuf + 3, &out_len)) { 722 cuda_send_packet_to_host(s, obuf, 3 + out_len); 723 } else { 724 qemu_log_mask(LOG_GUEST_ERROR, 725 "CUDA: %s: wrong parameters %d\n", 726 desc->name, len); 727 obuf[0] = ERROR_PACKET; 728 obuf[1] = 0x5; /* bad parameters */ 729 obuf[2] = CUDA_PACKET; 730 obuf[3] = data[0]; 731 cuda_send_packet_to_host(s, obuf, 4); 732 } 733 return; 734 } 735 } 736 737 qemu_log_mask(LOG_GUEST_ERROR, "CUDA: unknown command 0x%02x\n", data[0]); 738 obuf[0] = ERROR_PACKET; 739 obuf[1] = 0x2; /* unknown command */ 740 obuf[2] = CUDA_PACKET; 741 obuf[3] = data[0]; 742 cuda_send_packet_to_host(s, obuf, 4); 743 } 744 745 static void cuda_receive_packet_from_host(CUDAState *s, 746 const uint8_t *data, int len) 747 { 748 #ifdef DEBUG_CUDA_PACKET 749 { 750 int i; 751 printf("cuda_receive_packet_from_host:\n"); 752 for(i = 0; i < len; i++) 753 printf(" %02x", data[i]); 754 printf("\n"); 755 } 756 #endif 757 switch(data[0]) { 758 case ADB_PACKET: 759 { 760 uint8_t obuf[ADB_MAX_OUT_LEN + 3]; 761 int olen; 762 olen = adb_request(&s->adb_bus, obuf + 2, data + 1, len - 1); 763 if (olen > 0) { 764 obuf[0] = ADB_PACKET; 765 obuf[1] = 0x00; 766 cuda_send_packet_to_host(s, obuf, olen + 2); 767 } else { 768 /* error */ 769 obuf[0] = ADB_PACKET; 770 obuf[1] = -olen; 771 obuf[2] = data[1]; 772 olen = 0; 773 cuda_send_packet_to_host(s, obuf, olen + 3); 774 } 775 } 776 break; 777 case CUDA_PACKET: 778 cuda_receive_packet(s, data + 1, len - 1); 779 break; 780 } 781 } 782 783 static void cuda_writew (void *opaque, hwaddr addr, uint32_t value) 784 { 785 } 786 787 static void cuda_writel (void *opaque, hwaddr addr, uint32_t value) 788 { 789 } 790 791 static uint32_t cuda_readw (void *opaque, hwaddr addr) 792 { 793 return 0; 794 } 795 796 static uint32_t cuda_readl (void *opaque, hwaddr addr) 797 { 798 return 0; 799 } 800 801 static const MemoryRegionOps cuda_ops = { 802 .old_mmio = { 803 .write = { 804 cuda_writeb, 805 cuda_writew, 806 cuda_writel, 807 }, 808 .read = { 809 cuda_readb, 810 cuda_readw, 811 cuda_readl, 812 }, 813 }, 814 .endianness = DEVICE_NATIVE_ENDIAN, 815 }; 816 817 static bool cuda_timer_exist(void *opaque, int version_id) 818 { 819 CUDATimer *s = opaque; 820 821 return s->timer != NULL; 822 } 823 824 static const VMStateDescription vmstate_cuda_timer = { 825 .name = "cuda_timer", 826 .version_id = 0, 827 .minimum_version_id = 0, 828 .fields = (VMStateField[]) { 829 VMSTATE_UINT16(latch, CUDATimer), 830 VMSTATE_UINT16(counter_value, CUDATimer), 831 VMSTATE_INT64(load_time, CUDATimer), 832 VMSTATE_INT64(next_irq_time, CUDATimer), 833 VMSTATE_TIMER_PTR_TEST(timer, CUDATimer, cuda_timer_exist), 834 VMSTATE_END_OF_LIST() 835 } 836 }; 837 838 static const VMStateDescription vmstate_cuda = { 839 .name = "cuda", 840 .version_id = 4, 841 .minimum_version_id = 4, 842 .fields = (VMStateField[]) { 843 VMSTATE_UINT8(a, CUDAState), 844 VMSTATE_UINT8(b, CUDAState), 845 VMSTATE_UINT8(last_b, CUDAState), 846 VMSTATE_UINT8(dira, CUDAState), 847 VMSTATE_UINT8(dirb, CUDAState), 848 VMSTATE_UINT8(sr, CUDAState), 849 VMSTATE_UINT8(acr, CUDAState), 850 VMSTATE_UINT8(last_acr, CUDAState), 851 VMSTATE_UINT8(pcr, CUDAState), 852 VMSTATE_UINT8(ifr, CUDAState), 853 VMSTATE_UINT8(ier, CUDAState), 854 VMSTATE_UINT8(anh, CUDAState), 855 VMSTATE_INT32(data_in_size, CUDAState), 856 VMSTATE_INT32(data_in_index, CUDAState), 857 VMSTATE_INT32(data_out_index, CUDAState), 858 VMSTATE_UINT8(autopoll, CUDAState), 859 VMSTATE_UINT8(autopoll_rate_ms, CUDAState), 860 VMSTATE_UINT16(adb_poll_mask, CUDAState), 861 VMSTATE_BUFFER(data_in, CUDAState), 862 VMSTATE_BUFFER(data_out, CUDAState), 863 VMSTATE_UINT32(tick_offset, CUDAState), 864 VMSTATE_STRUCT_ARRAY(timers, CUDAState, 2, 1, 865 vmstate_cuda_timer, CUDATimer), 866 VMSTATE_TIMER_PTR(adb_poll_timer, CUDAState), 867 VMSTATE_TIMER_PTR(sr_delay_timer, CUDAState), 868 VMSTATE_END_OF_LIST() 869 } 870 }; 871 872 static void cuda_reset(DeviceState *dev) 873 { 874 CUDAState *s = CUDA(dev); 875 876 s->b = 0; 877 s->a = 0; 878 s->dirb = 0xff; 879 s->dira = 0; 880 s->sr = 0; 881 s->acr = 0; 882 s->pcr = 0; 883 s->ifr = 0; 884 s->ier = 0; 885 // s->ier = T1_INT | SR_INT; 886 s->anh = 0; 887 s->data_in_size = 0; 888 s->data_in_index = 0; 889 s->data_out_index = 0; 890 s->autopoll = 0; 891 892 s->timers[0].latch = 0xffff; 893 set_counter(s, &s->timers[0], 0xffff); 894 895 s->timers[1].latch = 0xffff; 896 897 s->sr_delay_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, cuda_set_sr_int, s); 898 } 899 900 static void cuda_realizefn(DeviceState *dev, Error **errp) 901 { 902 CUDAState *s = CUDA(dev); 903 struct tm tm; 904 905 s->timers[0].timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, cuda_timer1, s); 906 s->timers[0].frequency = s->frequency; 907 s->timers[1].timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, cuda_timer2, s); 908 s->timers[1].frequency = (SCALE_US * 6000) / 4700; 909 910 qemu_get_timedate(&tm, 0); 911 s->tick_offset = (uint32_t)mktimegm(&tm) + RTC_OFFSET; 912 913 s->adb_poll_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, cuda_adb_poll, s); 914 s->autopoll_rate_ms = 20; 915 s->adb_poll_mask = 0xffff; 916 } 917 918 static void cuda_initfn(Object *obj) 919 { 920 SysBusDevice *d = SYS_BUS_DEVICE(obj); 921 CUDAState *s = CUDA(obj); 922 int i; 923 924 memory_region_init_io(&s->mem, obj, &cuda_ops, s, "cuda", 0x2000); 925 sysbus_init_mmio(d, &s->mem); 926 sysbus_init_irq(d, &s->irq); 927 928 for (i = 0; i < ARRAY_SIZE(s->timers); i++) { 929 s->timers[i].index = i; 930 } 931 932 qbus_create_inplace(&s->adb_bus, sizeof(s->adb_bus), TYPE_ADB_BUS, 933 DEVICE(obj), "adb.0"); 934 } 935 936 static Property cuda_properties[] = { 937 DEFINE_PROP_UINT64("frequency", CUDAState, frequency, 0), 938 DEFINE_PROP_END_OF_LIST() 939 }; 940 941 static void cuda_class_init(ObjectClass *oc, void *data) 942 { 943 DeviceClass *dc = DEVICE_CLASS(oc); 944 945 dc->realize = cuda_realizefn; 946 dc->reset = cuda_reset; 947 dc->vmsd = &vmstate_cuda; 948 dc->props = cuda_properties; 949 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 950 } 951 952 static const TypeInfo cuda_type_info = { 953 .name = TYPE_CUDA, 954 .parent = TYPE_SYS_BUS_DEVICE, 955 .instance_size = sizeof(CUDAState), 956 .instance_init = cuda_initfn, 957 .class_init = cuda_class_init, 958 }; 959 960 static void cuda_register_types(void) 961 { 962 type_register_static(&cuda_type_info); 963 } 964 965 type_init(cuda_register_types) 966