1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2012-2016, The Linux Foundation. All rights reserved. 4 * Copyright (C) 2017 Linaro Ltd. 5 */ 6 7 #include <linux/delay.h> 8 #include <linux/device.h> 9 #include <linux/dma-mapping.h> 10 #include <linux/interrupt.h> 11 #include <linux/iopoll.h> 12 #include <linux/kernel.h> 13 #include <linux/slab.h> 14 15 #include "core.h" 16 #include "hfi_cmds.h" 17 #include "hfi_msgs.h" 18 #include "hfi_venus.h" 19 #include "hfi_venus_io.h" 20 #include "firmware.h" 21 22 #define HFI_MASK_QHDR_TX_TYPE 0xff000000 23 #define HFI_MASK_QHDR_RX_TYPE 0x00ff0000 24 #define HFI_MASK_QHDR_PRI_TYPE 0x0000ff00 25 #define HFI_MASK_QHDR_ID_TYPE 0x000000ff 26 27 #define HFI_HOST_TO_CTRL_CMD_Q 0 28 #define HFI_CTRL_TO_HOST_MSG_Q 1 29 #define HFI_CTRL_TO_HOST_DBG_Q 2 30 #define HFI_MASK_QHDR_STATUS 0x000000ff 31 32 #define IFACEQ_NUM 3 33 #define IFACEQ_CMD_IDX 0 34 #define IFACEQ_MSG_IDX 1 35 #define IFACEQ_DBG_IDX 2 36 #define IFACEQ_MAX_BUF_COUNT 50 37 #define IFACEQ_MAX_PARALLEL_CLNTS 16 38 #define IFACEQ_DFLT_QHDR 0x01010000 39 40 #define POLL_INTERVAL_US 50 41 42 #define IFACEQ_MAX_PKT_SIZE 1024 43 #define IFACEQ_MED_PKT_SIZE 768 44 #define IFACEQ_MIN_PKT_SIZE 8 45 #define IFACEQ_VAR_SMALL_PKT_SIZE 100 46 #define IFACEQ_VAR_LARGE_PKT_SIZE 512 47 #define IFACEQ_VAR_HUGE_PKT_SIZE (1024 * 12) 48 49 struct hfi_queue_table_header { 50 u32 version; 51 u32 size; 52 u32 qhdr0_offset; 53 u32 qhdr_size; 54 u32 num_q; 55 u32 num_active_q; 56 }; 57 58 struct hfi_queue_header { 59 u32 status; 60 u32 start_addr; 61 u32 type; 62 u32 q_size; 63 u32 pkt_size; 64 u32 pkt_drop_cnt; 65 u32 rx_wm; 66 u32 tx_wm; 67 u32 rx_req; 68 u32 tx_req; 69 u32 rx_irq_status; 70 u32 tx_irq_status; 71 u32 read_idx; 72 u32 write_idx; 73 }; 74 75 #define IFACEQ_TABLE_SIZE \ 76 (sizeof(struct hfi_queue_table_header) + \ 77 sizeof(struct hfi_queue_header) * IFACEQ_NUM) 78 79 #define IFACEQ_QUEUE_SIZE (IFACEQ_MAX_PKT_SIZE * \ 80 IFACEQ_MAX_BUF_COUNT * IFACEQ_MAX_PARALLEL_CLNTS) 81 82 #define IFACEQ_GET_QHDR_START_ADDR(ptr, i) \ 83 (void *)(((ptr) + sizeof(struct hfi_queue_table_header)) + \ 84 ((i) * sizeof(struct hfi_queue_header))) 85 86 #define QDSS_SIZE SZ_4K 87 #define SFR_SIZE SZ_4K 88 #define QUEUE_SIZE \ 89 (IFACEQ_TABLE_SIZE + (IFACEQ_QUEUE_SIZE * IFACEQ_NUM)) 90 91 #define ALIGNED_QDSS_SIZE ALIGN(QDSS_SIZE, SZ_4K) 92 #define ALIGNED_SFR_SIZE ALIGN(SFR_SIZE, SZ_4K) 93 #define ALIGNED_QUEUE_SIZE ALIGN(QUEUE_SIZE, SZ_4K) 94 #define SHARED_QSIZE ALIGN(ALIGNED_SFR_SIZE + ALIGNED_QUEUE_SIZE + \ 95 ALIGNED_QDSS_SIZE, SZ_1M) 96 97 struct mem_desc { 98 dma_addr_t da; /* device address */ 99 void *kva; /* kernel virtual address */ 100 u32 size; 101 unsigned long attrs; 102 }; 103 104 struct iface_queue { 105 struct hfi_queue_header *qhdr; 106 struct mem_desc qmem; 107 }; 108 109 enum venus_state { 110 VENUS_STATE_DEINIT = 1, 111 VENUS_STATE_INIT, 112 }; 113 114 struct venus_hfi_device { 115 struct venus_core *core; 116 u32 irq_status; 117 u32 last_packet_type; 118 bool power_enabled; 119 bool suspended; 120 enum venus_state state; 121 /* serialize read / write to the shared memory */ 122 struct mutex lock; 123 struct completion pwr_collapse_prep; 124 struct completion release_resource; 125 struct mem_desc ifaceq_table; 126 struct mem_desc sfr; 127 struct iface_queue queues[IFACEQ_NUM]; 128 u8 pkt_buf[IFACEQ_VAR_HUGE_PKT_SIZE]; 129 u8 dbg_buf[IFACEQ_VAR_HUGE_PKT_SIZE]; 130 }; 131 132 static bool venus_pkt_debug; 133 static int venus_fw_debug = HFI_DEBUG_MSG_ERROR | HFI_DEBUG_MSG_FATAL; 134 static bool venus_sys_idle_indicator; 135 static bool venus_fw_low_power_mode = true; 136 static int venus_hw_rsp_timeout = 1000; 137 static bool venus_fw_coverage; 138 139 static void venus_set_state(struct venus_hfi_device *hdev, 140 enum venus_state state) 141 { 142 mutex_lock(&hdev->lock); 143 hdev->state = state; 144 mutex_unlock(&hdev->lock); 145 } 146 147 static bool venus_is_valid_state(struct venus_hfi_device *hdev) 148 { 149 return hdev->state != VENUS_STATE_DEINIT; 150 } 151 152 static void venus_dump_packet(struct venus_hfi_device *hdev, const void *packet) 153 { 154 size_t pkt_size = *(u32 *)packet; 155 156 if (!venus_pkt_debug) 157 return; 158 159 print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 1, packet, 160 pkt_size, true); 161 } 162 163 static int venus_write_queue(struct venus_hfi_device *hdev, 164 struct iface_queue *queue, 165 void *packet, u32 *rx_req) 166 { 167 struct hfi_queue_header *qhdr; 168 u32 dwords, new_wr_idx; 169 u32 empty_space, rd_idx, wr_idx, qsize; 170 u32 *wr_ptr; 171 172 if (!queue->qmem.kva) 173 return -EINVAL; 174 175 qhdr = queue->qhdr; 176 if (!qhdr) 177 return -EINVAL; 178 179 venus_dump_packet(hdev, packet); 180 181 dwords = (*(u32 *)packet) >> 2; 182 if (!dwords) 183 return -EINVAL; 184 185 rd_idx = qhdr->read_idx; 186 wr_idx = qhdr->write_idx; 187 qsize = qhdr->q_size; 188 /* ensure rd/wr indices's are read from memory */ 189 rmb(); 190 191 if (wr_idx >= rd_idx) 192 empty_space = qsize - (wr_idx - rd_idx); 193 else 194 empty_space = rd_idx - wr_idx; 195 196 if (empty_space <= dwords) { 197 qhdr->tx_req = 1; 198 /* ensure tx_req is updated in memory */ 199 wmb(); 200 return -ENOSPC; 201 } 202 203 qhdr->tx_req = 0; 204 /* ensure tx_req is updated in memory */ 205 wmb(); 206 207 new_wr_idx = wr_idx + dwords; 208 wr_ptr = (u32 *)(queue->qmem.kva + (wr_idx << 2)); 209 if (new_wr_idx < qsize) { 210 memcpy(wr_ptr, packet, dwords << 2); 211 } else { 212 size_t len; 213 214 new_wr_idx -= qsize; 215 len = (dwords - new_wr_idx) << 2; 216 memcpy(wr_ptr, packet, len); 217 memcpy(queue->qmem.kva, packet + len, new_wr_idx << 2); 218 } 219 220 /* make sure packet is written before updating the write index */ 221 wmb(); 222 223 qhdr->write_idx = new_wr_idx; 224 *rx_req = qhdr->rx_req ? 1 : 0; 225 226 /* make sure write index is updated before an interrupt is raised */ 227 mb(); 228 229 return 0; 230 } 231 232 static int venus_read_queue(struct venus_hfi_device *hdev, 233 struct iface_queue *queue, void *pkt, u32 *tx_req) 234 { 235 struct hfi_queue_header *qhdr; 236 u32 dwords, new_rd_idx; 237 u32 rd_idx, wr_idx, type, qsize; 238 u32 *rd_ptr; 239 u32 recv_request = 0; 240 int ret = 0; 241 242 if (!queue->qmem.kva) 243 return -EINVAL; 244 245 qhdr = queue->qhdr; 246 if (!qhdr) 247 return -EINVAL; 248 249 type = qhdr->type; 250 rd_idx = qhdr->read_idx; 251 wr_idx = qhdr->write_idx; 252 qsize = qhdr->q_size; 253 254 /* make sure data is valid before using it */ 255 rmb(); 256 257 /* 258 * Do not set receive request for debug queue, if set, Venus generates 259 * interrupt for debug messages even when there is no response message 260 * available. In general debug queue will not become full as it is being 261 * emptied out for every interrupt from Venus. Venus will anyway 262 * generates interrupt if it is full. 263 */ 264 if (type & HFI_CTRL_TO_HOST_MSG_Q) 265 recv_request = 1; 266 267 if (rd_idx == wr_idx) { 268 qhdr->rx_req = recv_request; 269 *tx_req = 0; 270 /* update rx_req field in memory */ 271 wmb(); 272 return -ENODATA; 273 } 274 275 rd_ptr = (u32 *)(queue->qmem.kva + (rd_idx << 2)); 276 dwords = *rd_ptr >> 2; 277 if (!dwords) 278 return -EINVAL; 279 280 new_rd_idx = rd_idx + dwords; 281 if (((dwords << 2) <= IFACEQ_VAR_HUGE_PKT_SIZE) && rd_idx <= qsize) { 282 if (new_rd_idx < qsize) { 283 memcpy(pkt, rd_ptr, dwords << 2); 284 } else { 285 size_t len; 286 287 new_rd_idx -= qsize; 288 len = (dwords - new_rd_idx) << 2; 289 memcpy(pkt, rd_ptr, len); 290 memcpy(pkt + len, queue->qmem.kva, new_rd_idx << 2); 291 } 292 } else { 293 /* bad packet received, dropping */ 294 new_rd_idx = qhdr->write_idx; 295 ret = -EBADMSG; 296 } 297 298 /* ensure the packet is read before updating read index */ 299 rmb(); 300 301 qhdr->read_idx = new_rd_idx; 302 /* ensure updating read index */ 303 wmb(); 304 305 rd_idx = qhdr->read_idx; 306 wr_idx = qhdr->write_idx; 307 /* ensure rd/wr indices are read from memory */ 308 rmb(); 309 310 if (rd_idx != wr_idx) 311 qhdr->rx_req = 0; 312 else 313 qhdr->rx_req = recv_request; 314 315 *tx_req = qhdr->tx_req ? 1 : 0; 316 317 /* ensure rx_req is stored to memory and tx_req is loaded from memory */ 318 mb(); 319 320 venus_dump_packet(hdev, pkt); 321 322 return ret; 323 } 324 325 static int venus_alloc(struct venus_hfi_device *hdev, struct mem_desc *desc, 326 u32 size) 327 { 328 struct device *dev = hdev->core->dev; 329 330 desc->attrs = DMA_ATTR_WRITE_COMBINE; 331 desc->size = ALIGN(size, SZ_4K); 332 333 desc->kva = dma_alloc_attrs(dev, desc->size, &desc->da, GFP_KERNEL, 334 desc->attrs); 335 if (!desc->kva) 336 return -ENOMEM; 337 338 return 0; 339 } 340 341 static void venus_free(struct venus_hfi_device *hdev, struct mem_desc *mem) 342 { 343 struct device *dev = hdev->core->dev; 344 345 dma_free_attrs(dev, mem->size, mem->kva, mem->da, mem->attrs); 346 } 347 348 static void venus_writel(struct venus_hfi_device *hdev, u32 reg, u32 value) 349 { 350 writel(value, hdev->core->base + reg); 351 } 352 353 static u32 venus_readl(struct venus_hfi_device *hdev, u32 reg) 354 { 355 return readl(hdev->core->base + reg); 356 } 357 358 static void venus_set_registers(struct venus_hfi_device *hdev) 359 { 360 const struct venus_resources *res = hdev->core->res; 361 const struct reg_val *tbl = res->reg_tbl; 362 unsigned int count = res->reg_tbl_size; 363 unsigned int i; 364 365 for (i = 0; i < count; i++) 366 venus_writel(hdev, tbl[i].reg, tbl[i].value); 367 } 368 369 static void venus_soft_int(struct venus_hfi_device *hdev) 370 { 371 venus_writel(hdev, CPU_IC_SOFTINT, BIT(CPU_IC_SOFTINT_H2A_SHIFT)); 372 } 373 374 static int venus_iface_cmdq_write_nolock(struct venus_hfi_device *hdev, 375 void *pkt) 376 { 377 struct device *dev = hdev->core->dev; 378 struct hfi_pkt_hdr *cmd_packet; 379 struct iface_queue *queue; 380 u32 rx_req; 381 int ret; 382 383 if (!venus_is_valid_state(hdev)) 384 return -EINVAL; 385 386 cmd_packet = (struct hfi_pkt_hdr *)pkt; 387 hdev->last_packet_type = cmd_packet->pkt_type; 388 389 queue = &hdev->queues[IFACEQ_CMD_IDX]; 390 391 ret = venus_write_queue(hdev, queue, pkt, &rx_req); 392 if (ret) { 393 dev_err(dev, "write to iface cmd queue failed (%d)\n", ret); 394 return ret; 395 } 396 397 if (rx_req) 398 venus_soft_int(hdev); 399 400 return 0; 401 } 402 403 static int venus_iface_cmdq_write(struct venus_hfi_device *hdev, void *pkt) 404 { 405 int ret; 406 407 mutex_lock(&hdev->lock); 408 ret = venus_iface_cmdq_write_nolock(hdev, pkt); 409 mutex_unlock(&hdev->lock); 410 411 return ret; 412 } 413 414 static int venus_hfi_core_set_resource(struct venus_core *core, u32 id, 415 u32 size, u32 addr, void *cookie) 416 { 417 struct venus_hfi_device *hdev = to_hfi_priv(core); 418 struct hfi_sys_set_resource_pkt *pkt; 419 u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; 420 int ret; 421 422 if (id == VIDC_RESOURCE_NONE) 423 return 0; 424 425 pkt = (struct hfi_sys_set_resource_pkt *)packet; 426 427 ret = pkt_sys_set_resource(pkt, id, size, addr, cookie); 428 if (ret) 429 return ret; 430 431 ret = venus_iface_cmdq_write(hdev, pkt); 432 if (ret) 433 return ret; 434 435 return 0; 436 } 437 438 static int venus_boot_core(struct venus_hfi_device *hdev) 439 { 440 struct device *dev = hdev->core->dev; 441 static const unsigned int max_tries = 100; 442 u32 ctrl_status = 0; 443 unsigned int count = 0; 444 int ret = 0; 445 446 venus_writel(hdev, VIDC_CTRL_INIT, BIT(VIDC_CTRL_INIT_CTRL_SHIFT)); 447 venus_writel(hdev, WRAPPER_INTR_MASK, WRAPPER_INTR_MASK_A2HVCODEC_MASK); 448 venus_writel(hdev, CPU_CS_SCIACMDARG3, 1); 449 450 while (!ctrl_status && count < max_tries) { 451 ctrl_status = venus_readl(hdev, CPU_CS_SCIACMDARG0); 452 if ((ctrl_status & CPU_CS_SCIACMDARG0_ERROR_STATUS_MASK) == 4) { 453 dev_err(dev, "invalid setting for UC_REGION\n"); 454 ret = -EINVAL; 455 break; 456 } 457 458 usleep_range(500, 1000); 459 count++; 460 } 461 462 if (count >= max_tries) 463 ret = -ETIMEDOUT; 464 465 return ret; 466 } 467 468 static u32 venus_hwversion(struct venus_hfi_device *hdev) 469 { 470 struct device *dev = hdev->core->dev; 471 u32 ver = venus_readl(hdev, WRAPPER_HW_VERSION); 472 u32 major, minor, step; 473 474 major = ver & WRAPPER_HW_VERSION_MAJOR_VERSION_MASK; 475 major = major >> WRAPPER_HW_VERSION_MAJOR_VERSION_SHIFT; 476 minor = ver & WRAPPER_HW_VERSION_MINOR_VERSION_MASK; 477 minor = minor >> WRAPPER_HW_VERSION_MINOR_VERSION_SHIFT; 478 step = ver & WRAPPER_HW_VERSION_STEP_VERSION_MASK; 479 480 dev_dbg(dev, "venus hw version %x.%x.%x\n", major, minor, step); 481 482 return major; 483 } 484 485 static int venus_run(struct venus_hfi_device *hdev) 486 { 487 struct device *dev = hdev->core->dev; 488 int ret; 489 490 /* 491 * Re-program all of the registers that get reset as a result of 492 * regulator_disable() and _enable() 493 */ 494 venus_set_registers(hdev); 495 496 venus_writel(hdev, UC_REGION_ADDR, hdev->ifaceq_table.da); 497 venus_writel(hdev, UC_REGION_SIZE, SHARED_QSIZE); 498 venus_writel(hdev, CPU_CS_SCIACMDARG2, hdev->ifaceq_table.da); 499 venus_writel(hdev, CPU_CS_SCIACMDARG1, 0x01); 500 if (hdev->sfr.da) 501 venus_writel(hdev, SFR_ADDR, hdev->sfr.da); 502 503 ret = venus_boot_core(hdev); 504 if (ret) { 505 dev_err(dev, "failed to reset venus core\n"); 506 return ret; 507 } 508 509 venus_hwversion(hdev); 510 511 return 0; 512 } 513 514 static int venus_halt_axi(struct venus_hfi_device *hdev) 515 { 516 void __iomem *base = hdev->core->base; 517 struct device *dev = hdev->core->dev; 518 u32 val; 519 int ret; 520 521 if (IS_V4(hdev->core)) { 522 val = venus_readl(hdev, WRAPPER_CPU_AXI_HALT); 523 val |= WRAPPER_CPU_AXI_HALT_HALT; 524 venus_writel(hdev, WRAPPER_CPU_AXI_HALT, val); 525 526 ret = readl_poll_timeout(base + WRAPPER_CPU_AXI_HALT_STATUS, 527 val, 528 val & WRAPPER_CPU_AXI_HALT_STATUS_IDLE, 529 POLL_INTERVAL_US, 530 VBIF_AXI_HALT_ACK_TIMEOUT_US); 531 if (ret) { 532 dev_err(dev, "AXI bus port halt timeout\n"); 533 return ret; 534 } 535 536 return 0; 537 } 538 539 /* Halt AXI and AXI IMEM VBIF Access */ 540 val = venus_readl(hdev, VBIF_AXI_HALT_CTRL0); 541 val |= VBIF_AXI_HALT_CTRL0_HALT_REQ; 542 venus_writel(hdev, VBIF_AXI_HALT_CTRL0, val); 543 544 /* Request for AXI bus port halt */ 545 ret = readl_poll_timeout(base + VBIF_AXI_HALT_CTRL1, val, 546 val & VBIF_AXI_HALT_CTRL1_HALT_ACK, 547 POLL_INTERVAL_US, 548 VBIF_AXI_HALT_ACK_TIMEOUT_US); 549 if (ret) { 550 dev_err(dev, "AXI bus port halt timeout\n"); 551 return ret; 552 } 553 554 return 0; 555 } 556 557 static int venus_power_off(struct venus_hfi_device *hdev) 558 { 559 int ret; 560 561 if (!hdev->power_enabled) 562 return 0; 563 564 ret = venus_set_hw_state_suspend(hdev->core); 565 if (ret) 566 return ret; 567 568 ret = venus_halt_axi(hdev); 569 if (ret) 570 return ret; 571 572 hdev->power_enabled = false; 573 574 return 0; 575 } 576 577 static int venus_power_on(struct venus_hfi_device *hdev) 578 { 579 int ret; 580 581 if (hdev->power_enabled) 582 return 0; 583 584 ret = venus_set_hw_state_resume(hdev->core); 585 if (ret) 586 goto err; 587 588 ret = venus_run(hdev); 589 if (ret) 590 goto err_suspend; 591 592 hdev->power_enabled = true; 593 594 return 0; 595 596 err_suspend: 597 venus_set_hw_state_suspend(hdev->core); 598 err: 599 hdev->power_enabled = false; 600 return ret; 601 } 602 603 static int venus_iface_msgq_read_nolock(struct venus_hfi_device *hdev, 604 void *pkt) 605 { 606 struct iface_queue *queue; 607 u32 tx_req; 608 int ret; 609 610 if (!venus_is_valid_state(hdev)) 611 return -EINVAL; 612 613 queue = &hdev->queues[IFACEQ_MSG_IDX]; 614 615 ret = venus_read_queue(hdev, queue, pkt, &tx_req); 616 if (ret) 617 return ret; 618 619 if (tx_req) 620 venus_soft_int(hdev); 621 622 return 0; 623 } 624 625 static int venus_iface_msgq_read(struct venus_hfi_device *hdev, void *pkt) 626 { 627 int ret; 628 629 mutex_lock(&hdev->lock); 630 ret = venus_iface_msgq_read_nolock(hdev, pkt); 631 mutex_unlock(&hdev->lock); 632 633 return ret; 634 } 635 636 static int venus_iface_dbgq_read_nolock(struct venus_hfi_device *hdev, 637 void *pkt) 638 { 639 struct iface_queue *queue; 640 u32 tx_req; 641 int ret; 642 643 ret = venus_is_valid_state(hdev); 644 if (!ret) 645 return -EINVAL; 646 647 queue = &hdev->queues[IFACEQ_DBG_IDX]; 648 649 ret = venus_read_queue(hdev, queue, pkt, &tx_req); 650 if (ret) 651 return ret; 652 653 if (tx_req) 654 venus_soft_int(hdev); 655 656 return 0; 657 } 658 659 static int venus_iface_dbgq_read(struct venus_hfi_device *hdev, void *pkt) 660 { 661 int ret; 662 663 if (!pkt) 664 return -EINVAL; 665 666 mutex_lock(&hdev->lock); 667 ret = venus_iface_dbgq_read_nolock(hdev, pkt); 668 mutex_unlock(&hdev->lock); 669 670 return ret; 671 } 672 673 static void venus_set_qhdr_defaults(struct hfi_queue_header *qhdr) 674 { 675 qhdr->status = 1; 676 qhdr->type = IFACEQ_DFLT_QHDR; 677 qhdr->q_size = IFACEQ_QUEUE_SIZE / 4; 678 qhdr->pkt_size = 0; 679 qhdr->rx_wm = 1; 680 qhdr->tx_wm = 1; 681 qhdr->rx_req = 1; 682 qhdr->tx_req = 0; 683 qhdr->rx_irq_status = 0; 684 qhdr->tx_irq_status = 0; 685 qhdr->read_idx = 0; 686 qhdr->write_idx = 0; 687 } 688 689 static void venus_interface_queues_release(struct venus_hfi_device *hdev) 690 { 691 mutex_lock(&hdev->lock); 692 693 venus_free(hdev, &hdev->ifaceq_table); 694 venus_free(hdev, &hdev->sfr); 695 696 memset(hdev->queues, 0, sizeof(hdev->queues)); 697 memset(&hdev->ifaceq_table, 0, sizeof(hdev->ifaceq_table)); 698 memset(&hdev->sfr, 0, sizeof(hdev->sfr)); 699 700 mutex_unlock(&hdev->lock); 701 } 702 703 static int venus_interface_queues_init(struct venus_hfi_device *hdev) 704 { 705 struct hfi_queue_table_header *tbl_hdr; 706 struct iface_queue *queue; 707 struct hfi_sfr *sfr; 708 struct mem_desc desc = {0}; 709 unsigned int offset; 710 unsigned int i; 711 int ret; 712 713 ret = venus_alloc(hdev, &desc, ALIGNED_QUEUE_SIZE); 714 if (ret) 715 return ret; 716 717 hdev->ifaceq_table = desc; 718 offset = IFACEQ_TABLE_SIZE; 719 720 for (i = 0; i < IFACEQ_NUM; i++) { 721 queue = &hdev->queues[i]; 722 queue->qmem.da = desc.da + offset; 723 queue->qmem.kva = desc.kva + offset; 724 queue->qmem.size = IFACEQ_QUEUE_SIZE; 725 offset += queue->qmem.size; 726 queue->qhdr = 727 IFACEQ_GET_QHDR_START_ADDR(hdev->ifaceq_table.kva, i); 728 729 venus_set_qhdr_defaults(queue->qhdr); 730 731 queue->qhdr->start_addr = queue->qmem.da; 732 733 if (i == IFACEQ_CMD_IDX) 734 queue->qhdr->type |= HFI_HOST_TO_CTRL_CMD_Q; 735 else if (i == IFACEQ_MSG_IDX) 736 queue->qhdr->type |= HFI_CTRL_TO_HOST_MSG_Q; 737 else if (i == IFACEQ_DBG_IDX) 738 queue->qhdr->type |= HFI_CTRL_TO_HOST_DBG_Q; 739 } 740 741 tbl_hdr = hdev->ifaceq_table.kva; 742 tbl_hdr->version = 0; 743 tbl_hdr->size = IFACEQ_TABLE_SIZE; 744 tbl_hdr->qhdr0_offset = sizeof(struct hfi_queue_table_header); 745 tbl_hdr->qhdr_size = sizeof(struct hfi_queue_header); 746 tbl_hdr->num_q = IFACEQ_NUM; 747 tbl_hdr->num_active_q = IFACEQ_NUM; 748 749 /* 750 * Set receive request to zero on debug queue as there is no 751 * need of interrupt from video hardware for debug messages 752 */ 753 queue = &hdev->queues[IFACEQ_DBG_IDX]; 754 queue->qhdr->rx_req = 0; 755 756 ret = venus_alloc(hdev, &desc, ALIGNED_SFR_SIZE); 757 if (ret) { 758 hdev->sfr.da = 0; 759 } else { 760 hdev->sfr = desc; 761 sfr = hdev->sfr.kva; 762 sfr->buf_size = ALIGNED_SFR_SIZE; 763 } 764 765 /* ensure table and queue header structs are settled in memory */ 766 wmb(); 767 768 return 0; 769 } 770 771 static int venus_sys_set_debug(struct venus_hfi_device *hdev, u32 debug) 772 { 773 struct hfi_sys_set_property_pkt *pkt; 774 u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; 775 int ret; 776 777 pkt = (struct hfi_sys_set_property_pkt *)packet; 778 779 pkt_sys_debug_config(pkt, HFI_DEBUG_MODE_QUEUE, debug); 780 781 ret = venus_iface_cmdq_write(hdev, pkt); 782 if (ret) 783 return ret; 784 785 return 0; 786 } 787 788 static int venus_sys_set_coverage(struct venus_hfi_device *hdev, u32 mode) 789 { 790 struct hfi_sys_set_property_pkt *pkt; 791 u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; 792 int ret; 793 794 pkt = (struct hfi_sys_set_property_pkt *)packet; 795 796 pkt_sys_coverage_config(pkt, mode); 797 798 ret = venus_iface_cmdq_write(hdev, pkt); 799 if (ret) 800 return ret; 801 802 return 0; 803 } 804 805 static int venus_sys_set_idle_message(struct venus_hfi_device *hdev, 806 bool enable) 807 { 808 struct hfi_sys_set_property_pkt *pkt; 809 u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; 810 int ret; 811 812 if (!enable) 813 return 0; 814 815 pkt = (struct hfi_sys_set_property_pkt *)packet; 816 817 pkt_sys_idle_indicator(pkt, enable); 818 819 ret = venus_iface_cmdq_write(hdev, pkt); 820 if (ret) 821 return ret; 822 823 return 0; 824 } 825 826 static int venus_sys_set_power_control(struct venus_hfi_device *hdev, 827 bool enable) 828 { 829 struct hfi_sys_set_property_pkt *pkt; 830 u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; 831 int ret; 832 833 pkt = (struct hfi_sys_set_property_pkt *)packet; 834 835 pkt_sys_power_control(pkt, enable); 836 837 ret = venus_iface_cmdq_write(hdev, pkt); 838 if (ret) 839 return ret; 840 841 return 0; 842 } 843 844 static int venus_get_queue_size(struct venus_hfi_device *hdev, 845 unsigned int index) 846 { 847 struct hfi_queue_header *qhdr; 848 849 if (index >= IFACEQ_NUM) 850 return -EINVAL; 851 852 qhdr = hdev->queues[index].qhdr; 853 if (!qhdr) 854 return -EINVAL; 855 856 return abs(qhdr->read_idx - qhdr->write_idx); 857 } 858 859 static int venus_sys_set_default_properties(struct venus_hfi_device *hdev) 860 { 861 struct device *dev = hdev->core->dev; 862 int ret; 863 864 ret = venus_sys_set_debug(hdev, venus_fw_debug); 865 if (ret) 866 dev_warn(dev, "setting fw debug msg ON failed (%d)\n", ret); 867 868 /* 869 * Idle indicator is disabled by default on some 4xx firmware versions, 870 * enable it explicitly in order to make suspend functional by checking 871 * WFI (wait-for-interrupt) bit. 872 */ 873 if (IS_V4(hdev->core)) 874 venus_sys_idle_indicator = true; 875 876 ret = venus_sys_set_idle_message(hdev, venus_sys_idle_indicator); 877 if (ret) 878 dev_warn(dev, "setting idle response ON failed (%d)\n", ret); 879 880 ret = venus_sys_set_power_control(hdev, venus_fw_low_power_mode); 881 if (ret) 882 dev_warn(dev, "setting hw power collapse ON failed (%d)\n", 883 ret); 884 885 return ret; 886 } 887 888 static int venus_session_cmd(struct venus_inst *inst, u32 pkt_type) 889 { 890 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 891 struct hfi_session_pkt pkt; 892 893 pkt_session_cmd(&pkt, pkt_type, inst); 894 895 return venus_iface_cmdq_write(hdev, &pkt); 896 } 897 898 static void venus_flush_debug_queue(struct venus_hfi_device *hdev) 899 { 900 struct device *dev = hdev->core->dev; 901 void *packet = hdev->dbg_buf; 902 903 while (!venus_iface_dbgq_read(hdev, packet)) { 904 struct hfi_msg_sys_coverage_pkt *pkt = packet; 905 906 if (pkt->hdr.pkt_type != HFI_MSG_SYS_COV) { 907 struct hfi_msg_sys_debug_pkt *pkt = packet; 908 909 dev_dbg(dev, "%s", pkt->msg_data); 910 } 911 } 912 } 913 914 static int venus_prepare_power_collapse(struct venus_hfi_device *hdev, 915 bool wait) 916 { 917 unsigned long timeout = msecs_to_jiffies(venus_hw_rsp_timeout); 918 struct hfi_sys_pc_prep_pkt pkt; 919 int ret; 920 921 init_completion(&hdev->pwr_collapse_prep); 922 923 pkt_sys_pc_prep(&pkt); 924 925 ret = venus_iface_cmdq_write(hdev, &pkt); 926 if (ret) 927 return ret; 928 929 if (!wait) 930 return 0; 931 932 ret = wait_for_completion_timeout(&hdev->pwr_collapse_prep, timeout); 933 if (!ret) { 934 venus_flush_debug_queue(hdev); 935 return -ETIMEDOUT; 936 } 937 938 return 0; 939 } 940 941 static int venus_are_queues_empty(struct venus_hfi_device *hdev) 942 { 943 int ret1, ret2; 944 945 ret1 = venus_get_queue_size(hdev, IFACEQ_MSG_IDX); 946 if (ret1 < 0) 947 return ret1; 948 949 ret2 = venus_get_queue_size(hdev, IFACEQ_CMD_IDX); 950 if (ret2 < 0) 951 return ret2; 952 953 if (!ret1 && !ret2) 954 return 1; 955 956 return 0; 957 } 958 959 static void venus_sfr_print(struct venus_hfi_device *hdev) 960 { 961 struct device *dev = hdev->core->dev; 962 struct hfi_sfr *sfr = hdev->sfr.kva; 963 void *p; 964 965 if (!sfr) 966 return; 967 968 p = memchr(sfr->data, '\0', sfr->buf_size); 969 /* 970 * SFR isn't guaranteed to be NULL terminated since SYS_ERROR indicates 971 * that Venus is in the process of crashing. 972 */ 973 if (!p) 974 sfr->data[sfr->buf_size - 1] = '\0'; 975 976 dev_err_ratelimited(dev, "SFR message from FW: %s\n", sfr->data); 977 } 978 979 static void venus_process_msg_sys_error(struct venus_hfi_device *hdev, 980 void *packet) 981 { 982 struct hfi_msg_event_notify_pkt *event_pkt = packet; 983 984 if (event_pkt->event_id != HFI_EVENT_SYS_ERROR) 985 return; 986 987 venus_set_state(hdev, VENUS_STATE_DEINIT); 988 989 /* 990 * Once SYS_ERROR received from HW, it is safe to halt the AXI. 991 * With SYS_ERROR, Venus FW may have crashed and HW might be 992 * active and causing unnecessary transactions. Hence it is 993 * safe to stop all AXI transactions from venus subsystem. 994 */ 995 venus_halt_axi(hdev); 996 venus_sfr_print(hdev); 997 } 998 999 static irqreturn_t venus_isr_thread(struct venus_core *core) 1000 { 1001 struct venus_hfi_device *hdev = to_hfi_priv(core); 1002 const struct venus_resources *res; 1003 void *pkt; 1004 u32 msg_ret; 1005 1006 if (!hdev) 1007 return IRQ_NONE; 1008 1009 res = hdev->core->res; 1010 pkt = hdev->pkt_buf; 1011 1012 if (hdev->irq_status & WRAPPER_INTR_STATUS_A2HWD_MASK) { 1013 venus_sfr_print(hdev); 1014 hfi_process_watchdog_timeout(core); 1015 } 1016 1017 while (!venus_iface_msgq_read(hdev, pkt)) { 1018 msg_ret = hfi_process_msg_packet(core, pkt); 1019 switch (msg_ret) { 1020 case HFI_MSG_EVENT_NOTIFY: 1021 venus_process_msg_sys_error(hdev, pkt); 1022 break; 1023 case HFI_MSG_SYS_INIT: 1024 venus_hfi_core_set_resource(core, res->vmem_id, 1025 res->vmem_size, 1026 res->vmem_addr, 1027 hdev); 1028 break; 1029 case HFI_MSG_SYS_RELEASE_RESOURCE: 1030 complete(&hdev->release_resource); 1031 break; 1032 case HFI_MSG_SYS_PC_PREP: 1033 complete(&hdev->pwr_collapse_prep); 1034 break; 1035 default: 1036 break; 1037 } 1038 } 1039 1040 venus_flush_debug_queue(hdev); 1041 1042 return IRQ_HANDLED; 1043 } 1044 1045 static irqreturn_t venus_isr(struct venus_core *core) 1046 { 1047 struct venus_hfi_device *hdev = to_hfi_priv(core); 1048 u32 status; 1049 1050 if (!hdev) 1051 return IRQ_NONE; 1052 1053 status = venus_readl(hdev, WRAPPER_INTR_STATUS); 1054 1055 if (status & WRAPPER_INTR_STATUS_A2H_MASK || 1056 status & WRAPPER_INTR_STATUS_A2HWD_MASK || 1057 status & CPU_CS_SCIACMDARG0_INIT_IDLE_MSG_MASK) 1058 hdev->irq_status = status; 1059 1060 venus_writel(hdev, CPU_CS_A2HSOFTINTCLR, 1); 1061 venus_writel(hdev, WRAPPER_INTR_CLEAR, status); 1062 1063 return IRQ_WAKE_THREAD; 1064 } 1065 1066 static int venus_core_init(struct venus_core *core) 1067 { 1068 struct venus_hfi_device *hdev = to_hfi_priv(core); 1069 struct device *dev = core->dev; 1070 struct hfi_sys_get_property_pkt version_pkt; 1071 struct hfi_sys_init_pkt pkt; 1072 int ret; 1073 1074 pkt_sys_init(&pkt, HFI_VIDEO_ARCH_OX); 1075 1076 venus_set_state(hdev, VENUS_STATE_INIT); 1077 1078 ret = venus_iface_cmdq_write(hdev, &pkt); 1079 if (ret) 1080 return ret; 1081 1082 pkt_sys_image_version(&version_pkt); 1083 1084 ret = venus_iface_cmdq_write(hdev, &version_pkt); 1085 if (ret) 1086 dev_warn(dev, "failed to send image version pkt to fw\n"); 1087 1088 ret = venus_sys_set_default_properties(hdev); 1089 if (ret) 1090 return ret; 1091 1092 return 0; 1093 } 1094 1095 static int venus_core_deinit(struct venus_core *core) 1096 { 1097 struct venus_hfi_device *hdev = to_hfi_priv(core); 1098 1099 venus_set_state(hdev, VENUS_STATE_DEINIT); 1100 hdev->suspended = true; 1101 hdev->power_enabled = false; 1102 1103 return 0; 1104 } 1105 1106 static int venus_core_ping(struct venus_core *core, u32 cookie) 1107 { 1108 struct venus_hfi_device *hdev = to_hfi_priv(core); 1109 struct hfi_sys_ping_pkt pkt; 1110 1111 pkt_sys_ping(&pkt, cookie); 1112 1113 return venus_iface_cmdq_write(hdev, &pkt); 1114 } 1115 1116 static int venus_core_trigger_ssr(struct venus_core *core, u32 trigger_type) 1117 { 1118 struct venus_hfi_device *hdev = to_hfi_priv(core); 1119 struct hfi_sys_test_ssr_pkt pkt; 1120 int ret; 1121 1122 ret = pkt_sys_ssr_cmd(&pkt, trigger_type); 1123 if (ret) 1124 return ret; 1125 1126 return venus_iface_cmdq_write(hdev, &pkt); 1127 } 1128 1129 static int venus_session_init(struct venus_inst *inst, u32 session_type, 1130 u32 codec) 1131 { 1132 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1133 struct hfi_session_init_pkt pkt; 1134 int ret; 1135 1136 ret = pkt_session_init(&pkt, inst, session_type, codec); 1137 if (ret) 1138 goto err; 1139 1140 ret = venus_iface_cmdq_write(hdev, &pkt); 1141 if (ret) 1142 goto err; 1143 1144 return 0; 1145 1146 err: 1147 venus_flush_debug_queue(hdev); 1148 return ret; 1149 } 1150 1151 static int venus_session_end(struct venus_inst *inst) 1152 { 1153 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1154 struct device *dev = hdev->core->dev; 1155 1156 if (venus_fw_coverage) { 1157 if (venus_sys_set_coverage(hdev, venus_fw_coverage)) 1158 dev_warn(dev, "fw coverage msg ON failed\n"); 1159 } 1160 1161 return venus_session_cmd(inst, HFI_CMD_SYS_SESSION_END); 1162 } 1163 1164 static int venus_session_abort(struct venus_inst *inst) 1165 { 1166 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1167 1168 venus_flush_debug_queue(hdev); 1169 1170 return venus_session_cmd(inst, HFI_CMD_SYS_SESSION_ABORT); 1171 } 1172 1173 static int venus_session_flush(struct venus_inst *inst, u32 flush_mode) 1174 { 1175 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1176 struct hfi_session_flush_pkt pkt; 1177 int ret; 1178 1179 ret = pkt_session_flush(&pkt, inst, flush_mode); 1180 if (ret) 1181 return ret; 1182 1183 return venus_iface_cmdq_write(hdev, &pkt); 1184 } 1185 1186 static int venus_session_start(struct venus_inst *inst) 1187 { 1188 return venus_session_cmd(inst, HFI_CMD_SESSION_START); 1189 } 1190 1191 static int venus_session_stop(struct venus_inst *inst) 1192 { 1193 return venus_session_cmd(inst, HFI_CMD_SESSION_STOP); 1194 } 1195 1196 static int venus_session_continue(struct venus_inst *inst) 1197 { 1198 return venus_session_cmd(inst, HFI_CMD_SESSION_CONTINUE); 1199 } 1200 1201 static int venus_session_etb(struct venus_inst *inst, 1202 struct hfi_frame_data *in_frame) 1203 { 1204 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1205 u32 session_type = inst->session_type; 1206 int ret; 1207 1208 if (session_type == VIDC_SESSION_TYPE_DEC) { 1209 struct hfi_session_empty_buffer_compressed_pkt pkt; 1210 1211 ret = pkt_session_etb_decoder(&pkt, inst, in_frame); 1212 if (ret) 1213 return ret; 1214 1215 ret = venus_iface_cmdq_write(hdev, &pkt); 1216 } else if (session_type == VIDC_SESSION_TYPE_ENC) { 1217 struct hfi_session_empty_buffer_uncompressed_plane0_pkt pkt; 1218 1219 ret = pkt_session_etb_encoder(&pkt, inst, in_frame); 1220 if (ret) 1221 return ret; 1222 1223 ret = venus_iface_cmdq_write(hdev, &pkt); 1224 } else { 1225 ret = -EINVAL; 1226 } 1227 1228 return ret; 1229 } 1230 1231 static int venus_session_ftb(struct venus_inst *inst, 1232 struct hfi_frame_data *out_frame) 1233 { 1234 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1235 struct hfi_session_fill_buffer_pkt pkt; 1236 int ret; 1237 1238 ret = pkt_session_ftb(&pkt, inst, out_frame); 1239 if (ret) 1240 return ret; 1241 1242 return venus_iface_cmdq_write(hdev, &pkt); 1243 } 1244 1245 static int venus_session_set_buffers(struct venus_inst *inst, 1246 struct hfi_buffer_desc *bd) 1247 { 1248 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1249 struct hfi_session_set_buffers_pkt *pkt; 1250 u8 packet[IFACEQ_VAR_LARGE_PKT_SIZE]; 1251 int ret; 1252 1253 if (bd->buffer_type == HFI_BUFFER_INPUT) 1254 return 0; 1255 1256 pkt = (struct hfi_session_set_buffers_pkt *)packet; 1257 1258 ret = pkt_session_set_buffers(pkt, inst, bd); 1259 if (ret) 1260 return ret; 1261 1262 return venus_iface_cmdq_write(hdev, pkt); 1263 } 1264 1265 static int venus_session_unset_buffers(struct venus_inst *inst, 1266 struct hfi_buffer_desc *bd) 1267 { 1268 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1269 struct hfi_session_release_buffer_pkt *pkt; 1270 u8 packet[IFACEQ_VAR_LARGE_PKT_SIZE]; 1271 int ret; 1272 1273 if (bd->buffer_type == HFI_BUFFER_INPUT) 1274 return 0; 1275 1276 pkt = (struct hfi_session_release_buffer_pkt *)packet; 1277 1278 ret = pkt_session_unset_buffers(pkt, inst, bd); 1279 if (ret) 1280 return ret; 1281 1282 return venus_iface_cmdq_write(hdev, pkt); 1283 } 1284 1285 static int venus_session_load_res(struct venus_inst *inst) 1286 { 1287 return venus_session_cmd(inst, HFI_CMD_SESSION_LOAD_RESOURCES); 1288 } 1289 1290 static int venus_session_release_res(struct venus_inst *inst) 1291 { 1292 return venus_session_cmd(inst, HFI_CMD_SESSION_RELEASE_RESOURCES); 1293 } 1294 1295 static int venus_session_parse_seq_hdr(struct venus_inst *inst, u32 seq_hdr, 1296 u32 seq_hdr_len) 1297 { 1298 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1299 struct hfi_session_parse_sequence_header_pkt *pkt; 1300 u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; 1301 int ret; 1302 1303 pkt = (struct hfi_session_parse_sequence_header_pkt *)packet; 1304 1305 ret = pkt_session_parse_seq_header(pkt, inst, seq_hdr, seq_hdr_len); 1306 if (ret) 1307 return ret; 1308 1309 ret = venus_iface_cmdq_write(hdev, pkt); 1310 if (ret) 1311 return ret; 1312 1313 return 0; 1314 } 1315 1316 static int venus_session_get_seq_hdr(struct venus_inst *inst, u32 seq_hdr, 1317 u32 seq_hdr_len) 1318 { 1319 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1320 struct hfi_session_get_sequence_header_pkt *pkt; 1321 u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; 1322 int ret; 1323 1324 pkt = (struct hfi_session_get_sequence_header_pkt *)packet; 1325 1326 ret = pkt_session_get_seq_hdr(pkt, inst, seq_hdr, seq_hdr_len); 1327 if (ret) 1328 return ret; 1329 1330 return venus_iface_cmdq_write(hdev, pkt); 1331 } 1332 1333 static int venus_session_set_property(struct venus_inst *inst, u32 ptype, 1334 void *pdata) 1335 { 1336 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1337 struct hfi_session_set_property_pkt *pkt; 1338 u8 packet[IFACEQ_VAR_LARGE_PKT_SIZE]; 1339 int ret; 1340 1341 pkt = (struct hfi_session_set_property_pkt *)packet; 1342 1343 ret = pkt_session_set_property(pkt, inst, ptype, pdata); 1344 if (ret == -ENOTSUPP) 1345 return 0; 1346 if (ret) 1347 return ret; 1348 1349 return venus_iface_cmdq_write(hdev, pkt); 1350 } 1351 1352 static int venus_session_get_property(struct venus_inst *inst, u32 ptype) 1353 { 1354 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1355 struct hfi_session_get_property_pkt pkt; 1356 int ret; 1357 1358 ret = pkt_session_get_property(&pkt, inst, ptype); 1359 if (ret) 1360 return ret; 1361 1362 return venus_iface_cmdq_write(hdev, &pkt); 1363 } 1364 1365 static int venus_resume(struct venus_core *core) 1366 { 1367 struct venus_hfi_device *hdev = to_hfi_priv(core); 1368 int ret = 0; 1369 1370 mutex_lock(&hdev->lock); 1371 1372 if (!hdev->suspended) 1373 goto unlock; 1374 1375 ret = venus_power_on(hdev); 1376 1377 unlock: 1378 if (!ret) 1379 hdev->suspended = false; 1380 1381 mutex_unlock(&hdev->lock); 1382 1383 return ret; 1384 } 1385 1386 static int venus_suspend_1xx(struct venus_core *core) 1387 { 1388 struct venus_hfi_device *hdev = to_hfi_priv(core); 1389 struct device *dev = core->dev; 1390 u32 ctrl_status; 1391 int ret; 1392 1393 if (!hdev->power_enabled || hdev->suspended) 1394 return 0; 1395 1396 mutex_lock(&hdev->lock); 1397 ret = venus_is_valid_state(hdev); 1398 mutex_unlock(&hdev->lock); 1399 1400 if (!ret) { 1401 dev_err(dev, "bad state, cannot suspend\n"); 1402 return -EINVAL; 1403 } 1404 1405 ret = venus_prepare_power_collapse(hdev, true); 1406 if (ret) { 1407 dev_err(dev, "prepare for power collapse fail (%d)\n", ret); 1408 return ret; 1409 } 1410 1411 mutex_lock(&hdev->lock); 1412 1413 if (hdev->last_packet_type != HFI_CMD_SYS_PC_PREP) { 1414 mutex_unlock(&hdev->lock); 1415 return -EINVAL; 1416 } 1417 1418 ret = venus_are_queues_empty(hdev); 1419 if (ret < 0 || !ret) { 1420 mutex_unlock(&hdev->lock); 1421 return -EINVAL; 1422 } 1423 1424 ctrl_status = venus_readl(hdev, CPU_CS_SCIACMDARG0); 1425 if (!(ctrl_status & CPU_CS_SCIACMDARG0_PC_READY)) { 1426 mutex_unlock(&hdev->lock); 1427 return -EINVAL; 1428 } 1429 1430 ret = venus_power_off(hdev); 1431 if (ret) { 1432 mutex_unlock(&hdev->lock); 1433 return ret; 1434 } 1435 1436 hdev->suspended = true; 1437 1438 mutex_unlock(&hdev->lock); 1439 1440 return 0; 1441 } 1442 1443 static bool venus_cpu_and_video_core_idle(struct venus_hfi_device *hdev) 1444 { 1445 u32 ctrl_status, cpu_status; 1446 1447 cpu_status = venus_readl(hdev, WRAPPER_CPU_STATUS); 1448 ctrl_status = venus_readl(hdev, CPU_CS_SCIACMDARG0); 1449 1450 if (cpu_status & WRAPPER_CPU_STATUS_WFI && 1451 ctrl_status & CPU_CS_SCIACMDARG0_INIT_IDLE_MSG_MASK) 1452 return true; 1453 1454 return false; 1455 } 1456 1457 static bool venus_cpu_idle_and_pc_ready(struct venus_hfi_device *hdev) 1458 { 1459 u32 ctrl_status, cpu_status; 1460 1461 cpu_status = venus_readl(hdev, WRAPPER_CPU_STATUS); 1462 ctrl_status = venus_readl(hdev, CPU_CS_SCIACMDARG0); 1463 1464 if (cpu_status & WRAPPER_CPU_STATUS_WFI && 1465 ctrl_status & CPU_CS_SCIACMDARG0_PC_READY) 1466 return true; 1467 1468 return false; 1469 } 1470 1471 static int venus_suspend_3xx(struct venus_core *core) 1472 { 1473 struct venus_hfi_device *hdev = to_hfi_priv(core); 1474 struct device *dev = core->dev; 1475 u32 ctrl_status; 1476 bool val; 1477 int ret; 1478 1479 if (!hdev->power_enabled || hdev->suspended) 1480 return 0; 1481 1482 mutex_lock(&hdev->lock); 1483 ret = venus_is_valid_state(hdev); 1484 mutex_unlock(&hdev->lock); 1485 1486 if (!ret) { 1487 dev_err(dev, "bad state, cannot suspend\n"); 1488 return -EINVAL; 1489 } 1490 1491 ctrl_status = venus_readl(hdev, CPU_CS_SCIACMDARG0); 1492 if (ctrl_status & CPU_CS_SCIACMDARG0_PC_READY) 1493 goto power_off; 1494 1495 /* 1496 * Power collapse sequence for Venus 3xx and 4xx versions: 1497 * 1. Check for ARM9 and video core to be idle by checking WFI bit 1498 * (bit 0) in CPU status register and by checking Idle (bit 30) in 1499 * Control status register for video core. 1500 * 2. Send a command to prepare for power collapse. 1501 * 3. Check for WFI and PC_READY bits. 1502 */ 1503 ret = readx_poll_timeout(venus_cpu_and_video_core_idle, hdev, val, val, 1504 1500, 100 * 1500); 1505 if (ret) 1506 return ret; 1507 1508 ret = venus_prepare_power_collapse(hdev, false); 1509 if (ret) { 1510 dev_err(dev, "prepare for power collapse fail (%d)\n", ret); 1511 return ret; 1512 } 1513 1514 ret = readx_poll_timeout(venus_cpu_idle_and_pc_ready, hdev, val, val, 1515 1500, 100 * 1500); 1516 if (ret) 1517 return ret; 1518 1519 power_off: 1520 mutex_lock(&hdev->lock); 1521 1522 ret = venus_power_off(hdev); 1523 if (ret) { 1524 dev_err(dev, "venus_power_off (%d)\n", ret); 1525 mutex_unlock(&hdev->lock); 1526 return ret; 1527 } 1528 1529 hdev->suspended = true; 1530 1531 mutex_unlock(&hdev->lock); 1532 1533 return 0; 1534 } 1535 1536 static int venus_suspend(struct venus_core *core) 1537 { 1538 if (IS_V3(core) || IS_V4(core)) 1539 return venus_suspend_3xx(core); 1540 1541 return venus_suspend_1xx(core); 1542 } 1543 1544 static const struct hfi_ops venus_hfi_ops = { 1545 .core_init = venus_core_init, 1546 .core_deinit = venus_core_deinit, 1547 .core_ping = venus_core_ping, 1548 .core_trigger_ssr = venus_core_trigger_ssr, 1549 1550 .session_init = venus_session_init, 1551 .session_end = venus_session_end, 1552 .session_abort = venus_session_abort, 1553 .session_flush = venus_session_flush, 1554 .session_start = venus_session_start, 1555 .session_stop = venus_session_stop, 1556 .session_continue = venus_session_continue, 1557 .session_etb = venus_session_etb, 1558 .session_ftb = venus_session_ftb, 1559 .session_set_buffers = venus_session_set_buffers, 1560 .session_unset_buffers = venus_session_unset_buffers, 1561 .session_load_res = venus_session_load_res, 1562 .session_release_res = venus_session_release_res, 1563 .session_parse_seq_hdr = venus_session_parse_seq_hdr, 1564 .session_get_seq_hdr = venus_session_get_seq_hdr, 1565 .session_set_property = venus_session_set_property, 1566 .session_get_property = venus_session_get_property, 1567 1568 .resume = venus_resume, 1569 .suspend = venus_suspend, 1570 1571 .isr = venus_isr, 1572 .isr_thread = venus_isr_thread, 1573 }; 1574 1575 void venus_hfi_destroy(struct venus_core *core) 1576 { 1577 struct venus_hfi_device *hdev = to_hfi_priv(core); 1578 1579 venus_interface_queues_release(hdev); 1580 mutex_destroy(&hdev->lock); 1581 kfree(hdev); 1582 core->priv = NULL; 1583 core->ops = NULL; 1584 } 1585 1586 int venus_hfi_create(struct venus_core *core) 1587 { 1588 struct venus_hfi_device *hdev; 1589 int ret; 1590 1591 hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); 1592 if (!hdev) 1593 return -ENOMEM; 1594 1595 mutex_init(&hdev->lock); 1596 1597 hdev->core = core; 1598 hdev->suspended = true; 1599 core->priv = hdev; 1600 core->ops = &venus_hfi_ops; 1601 core->core_caps = ENC_ROTATION_CAPABILITY | ENC_SCALING_CAPABILITY | 1602 ENC_DEINTERLACE_CAPABILITY | 1603 DEC_MULTI_STREAM_CAPABILITY; 1604 1605 ret = venus_interface_queues_init(hdev); 1606 if (ret) 1607 goto err_kfree; 1608 1609 return 0; 1610 1611 err_kfree: 1612 kfree(hdev); 1613 core->priv = NULL; 1614 core->ops = NULL; 1615 return ret; 1616 } 1617