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 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_set_registers(struct venus_hfi_device *hdev) 349 { 350 const struct venus_resources *res = hdev->core->res; 351 const struct reg_val *tbl = res->reg_tbl; 352 unsigned int count = res->reg_tbl_size; 353 unsigned int i; 354 355 for (i = 0; i < count; i++) 356 writel(tbl[i].value, hdev->core->base + tbl[i].reg); 357 } 358 359 static void venus_soft_int(struct venus_hfi_device *hdev) 360 { 361 void __iomem *cpu_ic_base = hdev->core->cpu_ic_base; 362 u32 clear_bit; 363 364 if (IS_V6(hdev->core)) 365 clear_bit = BIT(CPU_IC_SOFTINT_H2A_SHIFT_V6); 366 else 367 clear_bit = BIT(CPU_IC_SOFTINT_H2A_SHIFT); 368 369 writel(clear_bit, cpu_ic_base + CPU_IC_SOFTINT); 370 } 371 372 static int venus_iface_cmdq_write_nolock(struct venus_hfi_device *hdev, 373 void *pkt, bool sync) 374 { 375 struct device *dev = hdev->core->dev; 376 struct hfi_pkt_hdr *cmd_packet; 377 struct iface_queue *queue; 378 u32 rx_req; 379 int ret; 380 381 if (!venus_is_valid_state(hdev)) 382 return -EINVAL; 383 384 cmd_packet = (struct hfi_pkt_hdr *)pkt; 385 hdev->last_packet_type = cmd_packet->pkt_type; 386 387 queue = &hdev->queues[IFACEQ_CMD_IDX]; 388 389 ret = venus_write_queue(hdev, queue, pkt, &rx_req); 390 if (ret) { 391 dev_err(dev, "write to iface cmd queue failed (%d)\n", ret); 392 return ret; 393 } 394 395 if (sync) { 396 /* 397 * Inform video hardware to raise interrupt for synchronous 398 * commands 399 */ 400 queue = &hdev->queues[IFACEQ_MSG_IDX]; 401 queue->qhdr->rx_req = 1; 402 /* ensure rx_req is updated in memory */ 403 wmb(); 404 } 405 406 if (rx_req) 407 venus_soft_int(hdev); 408 409 return 0; 410 } 411 412 static int venus_iface_cmdq_write(struct venus_hfi_device *hdev, void *pkt, bool sync) 413 { 414 int ret; 415 416 mutex_lock(&hdev->lock); 417 ret = venus_iface_cmdq_write_nolock(hdev, pkt, sync); 418 mutex_unlock(&hdev->lock); 419 420 return ret; 421 } 422 423 static int venus_hfi_core_set_resource(struct venus_core *core, u32 id, 424 u32 size, u32 addr, void *cookie) 425 { 426 struct venus_hfi_device *hdev = to_hfi_priv(core); 427 struct hfi_sys_set_resource_pkt *pkt; 428 u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; 429 int ret; 430 431 if (id == VIDC_RESOURCE_NONE) 432 return 0; 433 434 pkt = (struct hfi_sys_set_resource_pkt *)packet; 435 436 ret = pkt_sys_set_resource(pkt, id, size, addr, cookie); 437 if (ret) 438 return ret; 439 440 ret = venus_iface_cmdq_write(hdev, pkt, false); 441 if (ret) 442 return ret; 443 444 return 0; 445 } 446 447 static int venus_boot_core(struct venus_hfi_device *hdev) 448 { 449 struct device *dev = hdev->core->dev; 450 static const unsigned int max_tries = 100; 451 u32 ctrl_status = 0, mask_val; 452 unsigned int count = 0; 453 void __iomem *cpu_cs_base = hdev->core->cpu_cs_base; 454 void __iomem *wrapper_base = hdev->core->wrapper_base; 455 int ret = 0; 456 457 writel(BIT(VIDC_CTRL_INIT_CTRL_SHIFT), cpu_cs_base + VIDC_CTRL_INIT); 458 if (IS_V6(hdev->core)) { 459 mask_val = readl(wrapper_base + WRAPPER_INTR_MASK); 460 mask_val &= ~(WRAPPER_INTR_MASK_A2HWD_BASK_V6 | 461 WRAPPER_INTR_MASK_A2HCPU_MASK); 462 } else { 463 mask_val = WRAPPER_INTR_MASK_A2HVCODEC_MASK; 464 } 465 writel(mask_val, wrapper_base + WRAPPER_INTR_MASK); 466 writel(1, cpu_cs_base + CPU_CS_SCIACMDARG3); 467 468 while (!ctrl_status && count < max_tries) { 469 ctrl_status = readl(cpu_cs_base + CPU_CS_SCIACMDARG0); 470 if ((ctrl_status & CPU_CS_SCIACMDARG0_ERROR_STATUS_MASK) == 4) { 471 dev_err(dev, "invalid setting for UC_REGION\n"); 472 ret = -EINVAL; 473 break; 474 } 475 476 usleep_range(500, 1000); 477 count++; 478 } 479 480 if (count >= max_tries) 481 ret = -ETIMEDOUT; 482 483 if (IS_V6(hdev->core)) { 484 writel(0x1, cpu_cs_base + CPU_CS_H2XSOFTINTEN_V6); 485 writel(0x0, cpu_cs_base + CPU_CS_X2RPMH_V6); 486 } 487 488 return ret; 489 } 490 491 static u32 venus_hwversion(struct venus_hfi_device *hdev) 492 { 493 struct device *dev = hdev->core->dev; 494 void __iomem *wrapper_base = hdev->core->wrapper_base; 495 u32 ver; 496 u32 major, minor, step; 497 498 ver = readl(wrapper_base + WRAPPER_HW_VERSION); 499 major = ver & WRAPPER_HW_VERSION_MAJOR_VERSION_MASK; 500 major = major >> WRAPPER_HW_VERSION_MAJOR_VERSION_SHIFT; 501 minor = ver & WRAPPER_HW_VERSION_MINOR_VERSION_MASK; 502 minor = minor >> WRAPPER_HW_VERSION_MINOR_VERSION_SHIFT; 503 step = ver & WRAPPER_HW_VERSION_STEP_VERSION_MASK; 504 505 dev_dbg(dev, VDBGL "venus hw version %x.%x.%x\n", major, minor, step); 506 507 return major; 508 } 509 510 static int venus_run(struct venus_hfi_device *hdev) 511 { 512 struct device *dev = hdev->core->dev; 513 void __iomem *cpu_cs_base = hdev->core->cpu_cs_base; 514 int ret; 515 516 /* 517 * Re-program all of the registers that get reset as a result of 518 * regulator_disable() and _enable() 519 */ 520 venus_set_registers(hdev); 521 522 writel(hdev->ifaceq_table.da, cpu_cs_base + UC_REGION_ADDR); 523 writel(SHARED_QSIZE, cpu_cs_base + UC_REGION_SIZE); 524 writel(hdev->ifaceq_table.da, cpu_cs_base + CPU_CS_SCIACMDARG2); 525 writel(0x01, cpu_cs_base + CPU_CS_SCIACMDARG1); 526 if (hdev->sfr.da) 527 writel(hdev->sfr.da, cpu_cs_base + SFR_ADDR); 528 529 ret = venus_boot_core(hdev); 530 if (ret) { 531 dev_err(dev, "failed to reset venus core\n"); 532 return ret; 533 } 534 535 venus_hwversion(hdev); 536 537 return 0; 538 } 539 540 static int venus_halt_axi(struct venus_hfi_device *hdev) 541 { 542 void __iomem *wrapper_base = hdev->core->wrapper_base; 543 void __iomem *vbif_base = hdev->core->vbif_base; 544 void __iomem *cpu_cs_base = hdev->core->cpu_cs_base; 545 void __iomem *aon_base = hdev->core->aon_base; 546 struct device *dev = hdev->core->dev; 547 u32 val; 548 u32 mask_val; 549 int ret; 550 551 if (IS_V6(hdev->core)) { 552 writel(0x3, cpu_cs_base + CPU_CS_X2RPMH_V6); 553 554 if (hdev->core->res->num_vpp_pipes == 1) 555 goto skip_aon_mvp_noc; 556 557 writel(0x1, aon_base + AON_WRAPPER_MVP_NOC_LPI_CONTROL); 558 ret = readl_poll_timeout(aon_base + AON_WRAPPER_MVP_NOC_LPI_STATUS, 559 val, 560 val & BIT(0), 561 POLL_INTERVAL_US, 562 VBIF_AXI_HALT_ACK_TIMEOUT_US); 563 if (ret) 564 return -ETIMEDOUT; 565 566 skip_aon_mvp_noc: 567 mask_val = (BIT(2) | BIT(1) | BIT(0)); 568 writel(mask_val, wrapper_base + WRAPPER_DEBUG_BRIDGE_LPI_CONTROL_V6); 569 570 writel(0x00, wrapper_base + WRAPPER_DEBUG_BRIDGE_LPI_CONTROL_V6); 571 ret = readl_poll_timeout(wrapper_base + WRAPPER_DEBUG_BRIDGE_LPI_STATUS_V6, 572 val, 573 val == 0, 574 POLL_INTERVAL_US, 575 VBIF_AXI_HALT_ACK_TIMEOUT_US); 576 577 if (ret) { 578 dev_err(dev, "DBLP Release: lpi_status %x\n", val); 579 return -ETIMEDOUT; 580 } 581 return 0; 582 } 583 584 if (IS_V4(hdev->core)) { 585 val = readl(wrapper_base + WRAPPER_CPU_AXI_HALT); 586 val |= WRAPPER_CPU_AXI_HALT_HALT; 587 writel(val, wrapper_base + WRAPPER_CPU_AXI_HALT); 588 589 ret = readl_poll_timeout(wrapper_base + WRAPPER_CPU_AXI_HALT_STATUS, 590 val, 591 val & WRAPPER_CPU_AXI_HALT_STATUS_IDLE, 592 POLL_INTERVAL_US, 593 VBIF_AXI_HALT_ACK_TIMEOUT_US); 594 if (ret) { 595 dev_err(dev, "AXI bus port halt timeout\n"); 596 return ret; 597 } 598 599 return 0; 600 } 601 602 /* Halt AXI and AXI IMEM VBIF Access */ 603 val = readl(vbif_base + VBIF_AXI_HALT_CTRL0); 604 val |= VBIF_AXI_HALT_CTRL0_HALT_REQ; 605 writel(val, vbif_base + VBIF_AXI_HALT_CTRL0); 606 607 /* Request for AXI bus port halt */ 608 ret = readl_poll_timeout(vbif_base + VBIF_AXI_HALT_CTRL1, val, 609 val & VBIF_AXI_HALT_CTRL1_HALT_ACK, 610 POLL_INTERVAL_US, 611 VBIF_AXI_HALT_ACK_TIMEOUT_US); 612 if (ret) { 613 dev_err(dev, "AXI bus port halt timeout\n"); 614 return ret; 615 } 616 617 return 0; 618 } 619 620 static int venus_power_off(struct venus_hfi_device *hdev) 621 { 622 int ret; 623 624 if (!hdev->power_enabled) 625 return 0; 626 627 ret = venus_set_hw_state_suspend(hdev->core); 628 if (ret) 629 return ret; 630 631 ret = venus_halt_axi(hdev); 632 if (ret) 633 return ret; 634 635 hdev->power_enabled = false; 636 637 return 0; 638 } 639 640 static int venus_power_on(struct venus_hfi_device *hdev) 641 { 642 int ret; 643 644 if (hdev->power_enabled) 645 return 0; 646 647 ret = venus_set_hw_state_resume(hdev->core); 648 if (ret) 649 goto err; 650 651 ret = venus_run(hdev); 652 if (ret) 653 goto err_suspend; 654 655 hdev->power_enabled = true; 656 657 return 0; 658 659 err_suspend: 660 venus_set_hw_state_suspend(hdev->core); 661 err: 662 hdev->power_enabled = false; 663 return ret; 664 } 665 666 static int venus_iface_msgq_read_nolock(struct venus_hfi_device *hdev, 667 void *pkt) 668 { 669 struct iface_queue *queue; 670 u32 tx_req; 671 int ret; 672 673 if (!venus_is_valid_state(hdev)) 674 return -EINVAL; 675 676 queue = &hdev->queues[IFACEQ_MSG_IDX]; 677 678 ret = venus_read_queue(hdev, queue, pkt, &tx_req); 679 if (ret) 680 return ret; 681 682 if (tx_req) 683 venus_soft_int(hdev); 684 685 return 0; 686 } 687 688 static int venus_iface_msgq_read(struct venus_hfi_device *hdev, void *pkt) 689 { 690 int ret; 691 692 mutex_lock(&hdev->lock); 693 ret = venus_iface_msgq_read_nolock(hdev, pkt); 694 mutex_unlock(&hdev->lock); 695 696 return ret; 697 } 698 699 static int venus_iface_dbgq_read_nolock(struct venus_hfi_device *hdev, 700 void *pkt) 701 { 702 struct iface_queue *queue; 703 u32 tx_req; 704 int ret; 705 706 ret = venus_is_valid_state(hdev); 707 if (!ret) 708 return -EINVAL; 709 710 queue = &hdev->queues[IFACEQ_DBG_IDX]; 711 712 ret = venus_read_queue(hdev, queue, pkt, &tx_req); 713 if (ret) 714 return ret; 715 716 if (tx_req) 717 venus_soft_int(hdev); 718 719 return 0; 720 } 721 722 static int venus_iface_dbgq_read(struct venus_hfi_device *hdev, void *pkt) 723 { 724 int ret; 725 726 if (!pkt) 727 return -EINVAL; 728 729 mutex_lock(&hdev->lock); 730 ret = venus_iface_dbgq_read_nolock(hdev, pkt); 731 mutex_unlock(&hdev->lock); 732 733 return ret; 734 } 735 736 static void venus_set_qhdr_defaults(struct hfi_queue_header *qhdr) 737 { 738 qhdr->status = 1; 739 qhdr->type = IFACEQ_DFLT_QHDR; 740 qhdr->q_size = IFACEQ_QUEUE_SIZE / 4; 741 qhdr->pkt_size = 0; 742 qhdr->rx_wm = 1; 743 qhdr->tx_wm = 1; 744 qhdr->rx_req = 1; 745 qhdr->tx_req = 0; 746 qhdr->rx_irq_status = 0; 747 qhdr->tx_irq_status = 0; 748 qhdr->read_idx = 0; 749 qhdr->write_idx = 0; 750 } 751 752 static void venus_interface_queues_release(struct venus_hfi_device *hdev) 753 { 754 mutex_lock(&hdev->lock); 755 756 venus_free(hdev, &hdev->ifaceq_table); 757 venus_free(hdev, &hdev->sfr); 758 759 memset(hdev->queues, 0, sizeof(hdev->queues)); 760 memset(&hdev->ifaceq_table, 0, sizeof(hdev->ifaceq_table)); 761 memset(&hdev->sfr, 0, sizeof(hdev->sfr)); 762 763 mutex_unlock(&hdev->lock); 764 } 765 766 static int venus_interface_queues_init(struct venus_hfi_device *hdev) 767 { 768 struct hfi_queue_table_header *tbl_hdr; 769 struct iface_queue *queue; 770 struct hfi_sfr *sfr; 771 struct mem_desc desc = {0}; 772 unsigned int offset; 773 unsigned int i; 774 int ret; 775 776 ret = venus_alloc(hdev, &desc, ALIGNED_QUEUE_SIZE); 777 if (ret) 778 return ret; 779 780 hdev->ifaceq_table = desc; 781 offset = IFACEQ_TABLE_SIZE; 782 783 for (i = 0; i < IFACEQ_NUM; i++) { 784 queue = &hdev->queues[i]; 785 queue->qmem.da = desc.da + offset; 786 queue->qmem.kva = desc.kva + offset; 787 queue->qmem.size = IFACEQ_QUEUE_SIZE; 788 offset += queue->qmem.size; 789 queue->qhdr = 790 IFACEQ_GET_QHDR_START_ADDR(hdev->ifaceq_table.kva, i); 791 792 venus_set_qhdr_defaults(queue->qhdr); 793 794 queue->qhdr->start_addr = queue->qmem.da; 795 796 if (i == IFACEQ_CMD_IDX) 797 queue->qhdr->type |= HFI_HOST_TO_CTRL_CMD_Q; 798 else if (i == IFACEQ_MSG_IDX) 799 queue->qhdr->type |= HFI_CTRL_TO_HOST_MSG_Q; 800 else if (i == IFACEQ_DBG_IDX) 801 queue->qhdr->type |= HFI_CTRL_TO_HOST_DBG_Q; 802 } 803 804 tbl_hdr = hdev->ifaceq_table.kva; 805 tbl_hdr->version = 0; 806 tbl_hdr->size = IFACEQ_TABLE_SIZE; 807 tbl_hdr->qhdr0_offset = sizeof(struct hfi_queue_table_header); 808 tbl_hdr->qhdr_size = sizeof(struct hfi_queue_header); 809 tbl_hdr->num_q = IFACEQ_NUM; 810 tbl_hdr->num_active_q = IFACEQ_NUM; 811 812 /* 813 * Set receive request to zero on debug queue as there is no 814 * need of interrupt from video hardware for debug messages 815 */ 816 queue = &hdev->queues[IFACEQ_DBG_IDX]; 817 queue->qhdr->rx_req = 0; 818 819 ret = venus_alloc(hdev, &desc, ALIGNED_SFR_SIZE); 820 if (ret) { 821 hdev->sfr.da = 0; 822 } else { 823 hdev->sfr = desc; 824 sfr = hdev->sfr.kva; 825 sfr->buf_size = ALIGNED_SFR_SIZE; 826 } 827 828 /* ensure table and queue header structs are settled in memory */ 829 wmb(); 830 831 return 0; 832 } 833 834 static int venus_sys_set_debug(struct venus_hfi_device *hdev, u32 debug) 835 { 836 struct hfi_sys_set_property_pkt *pkt; 837 u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; 838 int ret; 839 840 pkt = (struct hfi_sys_set_property_pkt *)packet; 841 842 pkt_sys_debug_config(pkt, HFI_DEBUG_MODE_QUEUE, debug); 843 844 ret = venus_iface_cmdq_write(hdev, pkt, false); 845 if (ret) 846 return ret; 847 848 return 0; 849 } 850 851 static int venus_sys_set_coverage(struct venus_hfi_device *hdev, u32 mode) 852 { 853 struct hfi_sys_set_property_pkt *pkt; 854 u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; 855 int ret; 856 857 pkt = (struct hfi_sys_set_property_pkt *)packet; 858 859 pkt_sys_coverage_config(pkt, mode); 860 861 ret = venus_iface_cmdq_write(hdev, pkt, false); 862 if (ret) 863 return ret; 864 865 return 0; 866 } 867 868 static int venus_sys_set_idle_message(struct venus_hfi_device *hdev, 869 bool enable) 870 { 871 struct hfi_sys_set_property_pkt *pkt; 872 u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; 873 int ret; 874 875 if (!enable) 876 return 0; 877 878 pkt = (struct hfi_sys_set_property_pkt *)packet; 879 880 pkt_sys_idle_indicator(pkt, enable); 881 882 ret = venus_iface_cmdq_write(hdev, pkt, false); 883 if (ret) 884 return ret; 885 886 return 0; 887 } 888 889 static int venus_sys_set_power_control(struct venus_hfi_device *hdev, 890 bool enable) 891 { 892 struct hfi_sys_set_property_pkt *pkt; 893 u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; 894 int ret; 895 896 pkt = (struct hfi_sys_set_property_pkt *)packet; 897 898 pkt_sys_power_control(pkt, enable); 899 900 ret = venus_iface_cmdq_write(hdev, pkt, false); 901 if (ret) 902 return ret; 903 904 return 0; 905 } 906 907 static int venus_get_queue_size(struct venus_hfi_device *hdev, 908 unsigned int index) 909 { 910 struct hfi_queue_header *qhdr; 911 912 if (index >= IFACEQ_NUM) 913 return -EINVAL; 914 915 qhdr = hdev->queues[index].qhdr; 916 if (!qhdr) 917 return -EINVAL; 918 919 return abs(qhdr->read_idx - qhdr->write_idx); 920 } 921 922 static int venus_sys_set_default_properties(struct venus_hfi_device *hdev) 923 { 924 struct device *dev = hdev->core->dev; 925 int ret; 926 927 ret = venus_sys_set_debug(hdev, venus_fw_debug); 928 if (ret) 929 dev_warn(dev, "setting fw debug msg ON failed (%d)\n", ret); 930 931 /* 932 * Idle indicator is disabled by default on some 4xx firmware versions, 933 * enable it explicitly in order to make suspend functional by checking 934 * WFI (wait-for-interrupt) bit. 935 */ 936 if (IS_V4(hdev->core) || IS_V6(hdev->core)) 937 venus_sys_idle_indicator = true; 938 939 ret = venus_sys_set_idle_message(hdev, venus_sys_idle_indicator); 940 if (ret) 941 dev_warn(dev, "setting idle response ON failed (%d)\n", ret); 942 943 ret = venus_sys_set_power_control(hdev, venus_fw_low_power_mode); 944 if (ret) 945 dev_warn(dev, "setting hw power collapse ON failed (%d)\n", 946 ret); 947 948 return ret; 949 } 950 951 static int venus_session_cmd(struct venus_inst *inst, u32 pkt_type, bool sync) 952 { 953 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 954 struct hfi_session_pkt pkt; 955 956 pkt_session_cmd(&pkt, pkt_type, inst); 957 958 return venus_iface_cmdq_write(hdev, &pkt, sync); 959 } 960 961 static void venus_flush_debug_queue(struct venus_hfi_device *hdev) 962 { 963 struct device *dev = hdev->core->dev; 964 void *packet = hdev->dbg_buf; 965 966 while (!venus_iface_dbgq_read(hdev, packet)) { 967 struct hfi_msg_sys_coverage_pkt *pkt = packet; 968 969 if (pkt->hdr.pkt_type != HFI_MSG_SYS_COV) { 970 struct hfi_msg_sys_debug_pkt *pkt = packet; 971 972 dev_dbg(dev, VDBGFW "%s", pkt->msg_data); 973 } 974 } 975 } 976 977 static int venus_prepare_power_collapse(struct venus_hfi_device *hdev, 978 bool wait) 979 { 980 unsigned long timeout = msecs_to_jiffies(venus_hw_rsp_timeout); 981 struct hfi_sys_pc_prep_pkt pkt; 982 int ret; 983 984 init_completion(&hdev->pwr_collapse_prep); 985 986 pkt_sys_pc_prep(&pkt); 987 988 ret = venus_iface_cmdq_write(hdev, &pkt, false); 989 if (ret) 990 return ret; 991 992 if (!wait) 993 return 0; 994 995 ret = wait_for_completion_timeout(&hdev->pwr_collapse_prep, timeout); 996 if (!ret) { 997 venus_flush_debug_queue(hdev); 998 return -ETIMEDOUT; 999 } 1000 1001 return 0; 1002 } 1003 1004 static int venus_are_queues_empty(struct venus_hfi_device *hdev) 1005 { 1006 int ret1, ret2; 1007 1008 ret1 = venus_get_queue_size(hdev, IFACEQ_MSG_IDX); 1009 if (ret1 < 0) 1010 return ret1; 1011 1012 ret2 = venus_get_queue_size(hdev, IFACEQ_CMD_IDX); 1013 if (ret2 < 0) 1014 return ret2; 1015 1016 if (!ret1 && !ret2) 1017 return 1; 1018 1019 return 0; 1020 } 1021 1022 static void venus_sfr_print(struct venus_hfi_device *hdev) 1023 { 1024 struct device *dev = hdev->core->dev; 1025 struct hfi_sfr *sfr = hdev->sfr.kva; 1026 void *p; 1027 1028 if (!sfr) 1029 return; 1030 1031 p = memchr(sfr->data, '\0', sfr->buf_size); 1032 /* 1033 * SFR isn't guaranteed to be NULL terminated since SYS_ERROR indicates 1034 * that Venus is in the process of crashing. 1035 */ 1036 if (!p) 1037 sfr->data[sfr->buf_size - 1] = '\0'; 1038 1039 dev_err_ratelimited(dev, "SFR message from FW: %s\n", sfr->data); 1040 } 1041 1042 static void venus_process_msg_sys_error(struct venus_hfi_device *hdev, 1043 void *packet) 1044 { 1045 struct hfi_msg_event_notify_pkt *event_pkt = packet; 1046 1047 if (event_pkt->event_id != HFI_EVENT_SYS_ERROR) 1048 return; 1049 1050 venus_set_state(hdev, VENUS_STATE_DEINIT); 1051 1052 venus_sfr_print(hdev); 1053 } 1054 1055 static irqreturn_t venus_isr_thread(struct venus_core *core) 1056 { 1057 struct venus_hfi_device *hdev = to_hfi_priv(core); 1058 const struct venus_resources *res; 1059 void *pkt; 1060 u32 msg_ret; 1061 1062 if (!hdev) 1063 return IRQ_NONE; 1064 1065 res = hdev->core->res; 1066 pkt = hdev->pkt_buf; 1067 1068 1069 while (!venus_iface_msgq_read(hdev, pkt)) { 1070 msg_ret = hfi_process_msg_packet(core, pkt); 1071 switch (msg_ret) { 1072 case HFI_MSG_EVENT_NOTIFY: 1073 venus_process_msg_sys_error(hdev, pkt); 1074 break; 1075 case HFI_MSG_SYS_INIT: 1076 venus_hfi_core_set_resource(core, res->vmem_id, 1077 res->vmem_size, 1078 res->vmem_addr, 1079 hdev); 1080 break; 1081 case HFI_MSG_SYS_RELEASE_RESOURCE: 1082 complete(&hdev->release_resource); 1083 break; 1084 case HFI_MSG_SYS_PC_PREP: 1085 complete(&hdev->pwr_collapse_prep); 1086 break; 1087 default: 1088 break; 1089 } 1090 } 1091 1092 venus_flush_debug_queue(hdev); 1093 1094 return IRQ_HANDLED; 1095 } 1096 1097 static irqreturn_t venus_isr(struct venus_core *core) 1098 { 1099 struct venus_hfi_device *hdev = to_hfi_priv(core); 1100 u32 status; 1101 void __iomem *cpu_cs_base; 1102 void __iomem *wrapper_base; 1103 1104 if (!hdev) 1105 return IRQ_NONE; 1106 1107 cpu_cs_base = hdev->core->cpu_cs_base; 1108 wrapper_base = hdev->core->wrapper_base; 1109 1110 status = readl(wrapper_base + WRAPPER_INTR_STATUS); 1111 if (IS_V6(core)) { 1112 if (status & WRAPPER_INTR_STATUS_A2H_MASK || 1113 status & WRAPPER_INTR_STATUS_A2HWD_MASK_V6 || 1114 status & CPU_CS_SCIACMDARG0_INIT_IDLE_MSG_MASK) 1115 hdev->irq_status = status; 1116 } else { 1117 if (status & WRAPPER_INTR_STATUS_A2H_MASK || 1118 status & WRAPPER_INTR_STATUS_A2HWD_MASK || 1119 status & CPU_CS_SCIACMDARG0_INIT_IDLE_MSG_MASK) 1120 hdev->irq_status = status; 1121 } 1122 writel(1, cpu_cs_base + CPU_CS_A2HSOFTINTCLR); 1123 if (!IS_V6(core)) 1124 writel(status, wrapper_base + WRAPPER_INTR_CLEAR); 1125 1126 return IRQ_WAKE_THREAD; 1127 } 1128 1129 static int venus_core_init(struct venus_core *core) 1130 { 1131 struct venus_hfi_device *hdev = to_hfi_priv(core); 1132 struct device *dev = core->dev; 1133 struct hfi_sys_get_property_pkt version_pkt; 1134 struct hfi_sys_init_pkt pkt; 1135 int ret; 1136 1137 pkt_sys_init(&pkt, HFI_VIDEO_ARCH_OX); 1138 1139 venus_set_state(hdev, VENUS_STATE_INIT); 1140 1141 ret = venus_iface_cmdq_write(hdev, &pkt, false); 1142 if (ret) 1143 return ret; 1144 1145 pkt_sys_image_version(&version_pkt); 1146 1147 ret = venus_iface_cmdq_write(hdev, &version_pkt, false); 1148 if (ret) 1149 dev_warn(dev, "failed to send image version pkt to fw\n"); 1150 1151 ret = venus_sys_set_default_properties(hdev); 1152 if (ret) 1153 return ret; 1154 1155 return 0; 1156 } 1157 1158 static int venus_core_deinit(struct venus_core *core) 1159 { 1160 struct venus_hfi_device *hdev = to_hfi_priv(core); 1161 1162 venus_set_state(hdev, VENUS_STATE_DEINIT); 1163 hdev->suspended = true; 1164 hdev->power_enabled = false; 1165 1166 return 0; 1167 } 1168 1169 static int venus_core_ping(struct venus_core *core, u32 cookie) 1170 { 1171 struct venus_hfi_device *hdev = to_hfi_priv(core); 1172 struct hfi_sys_ping_pkt pkt; 1173 1174 pkt_sys_ping(&pkt, cookie); 1175 1176 return venus_iface_cmdq_write(hdev, &pkt, false); 1177 } 1178 1179 static int venus_core_trigger_ssr(struct venus_core *core, u32 trigger_type) 1180 { 1181 struct venus_hfi_device *hdev = to_hfi_priv(core); 1182 struct hfi_sys_test_ssr_pkt pkt; 1183 int ret; 1184 1185 ret = pkt_sys_ssr_cmd(&pkt, trigger_type); 1186 if (ret) 1187 return ret; 1188 1189 return venus_iface_cmdq_write(hdev, &pkt, false); 1190 } 1191 1192 static int venus_session_init(struct venus_inst *inst, u32 session_type, 1193 u32 codec) 1194 { 1195 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1196 struct hfi_session_init_pkt pkt; 1197 int ret; 1198 1199 ret = venus_sys_set_debug(hdev, venus_fw_debug); 1200 if (ret) 1201 goto err; 1202 1203 ret = pkt_session_init(&pkt, inst, session_type, codec); 1204 if (ret) 1205 goto err; 1206 1207 ret = venus_iface_cmdq_write(hdev, &pkt, true); 1208 if (ret) 1209 goto err; 1210 1211 return 0; 1212 1213 err: 1214 venus_flush_debug_queue(hdev); 1215 return ret; 1216 } 1217 1218 static int venus_session_end(struct venus_inst *inst) 1219 { 1220 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1221 struct device *dev = hdev->core->dev; 1222 1223 if (venus_fw_coverage) { 1224 if (venus_sys_set_coverage(hdev, venus_fw_coverage)) 1225 dev_warn(dev, "fw coverage msg ON failed\n"); 1226 } 1227 1228 return venus_session_cmd(inst, HFI_CMD_SYS_SESSION_END, true); 1229 } 1230 1231 static int venus_session_abort(struct venus_inst *inst) 1232 { 1233 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1234 1235 venus_flush_debug_queue(hdev); 1236 1237 return venus_session_cmd(inst, HFI_CMD_SYS_SESSION_ABORT, true); 1238 } 1239 1240 static int venus_session_flush(struct venus_inst *inst, u32 flush_mode) 1241 { 1242 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1243 struct hfi_session_flush_pkt pkt; 1244 int ret; 1245 1246 ret = pkt_session_flush(&pkt, inst, flush_mode); 1247 if (ret) 1248 return ret; 1249 1250 return venus_iface_cmdq_write(hdev, &pkt, true); 1251 } 1252 1253 static int venus_session_start(struct venus_inst *inst) 1254 { 1255 return venus_session_cmd(inst, HFI_CMD_SESSION_START, true); 1256 } 1257 1258 static int venus_session_stop(struct venus_inst *inst) 1259 { 1260 return venus_session_cmd(inst, HFI_CMD_SESSION_STOP, true); 1261 } 1262 1263 static int venus_session_continue(struct venus_inst *inst) 1264 { 1265 return venus_session_cmd(inst, HFI_CMD_SESSION_CONTINUE, false); 1266 } 1267 1268 static int venus_session_etb(struct venus_inst *inst, 1269 struct hfi_frame_data *in_frame) 1270 { 1271 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1272 u32 session_type = inst->session_type; 1273 int ret; 1274 1275 if (session_type == VIDC_SESSION_TYPE_DEC) { 1276 struct hfi_session_empty_buffer_compressed_pkt pkt; 1277 1278 ret = pkt_session_etb_decoder(&pkt, inst, in_frame); 1279 if (ret) 1280 return ret; 1281 1282 ret = venus_iface_cmdq_write(hdev, &pkt, false); 1283 } else if (session_type == VIDC_SESSION_TYPE_ENC) { 1284 struct hfi_session_empty_buffer_uncompressed_plane0_pkt pkt; 1285 1286 ret = pkt_session_etb_encoder(&pkt, inst, in_frame); 1287 if (ret) 1288 return ret; 1289 1290 ret = venus_iface_cmdq_write(hdev, &pkt, false); 1291 } else { 1292 ret = -EINVAL; 1293 } 1294 1295 return ret; 1296 } 1297 1298 static int venus_session_ftb(struct venus_inst *inst, 1299 struct hfi_frame_data *out_frame) 1300 { 1301 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1302 struct hfi_session_fill_buffer_pkt pkt; 1303 int ret; 1304 1305 ret = pkt_session_ftb(&pkt, inst, out_frame); 1306 if (ret) 1307 return ret; 1308 1309 return venus_iface_cmdq_write(hdev, &pkt, false); 1310 } 1311 1312 static int venus_session_set_buffers(struct venus_inst *inst, 1313 struct hfi_buffer_desc *bd) 1314 { 1315 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1316 struct hfi_session_set_buffers_pkt *pkt; 1317 u8 packet[IFACEQ_VAR_LARGE_PKT_SIZE]; 1318 int ret; 1319 1320 if (bd->buffer_type == HFI_BUFFER_INPUT) 1321 return 0; 1322 1323 pkt = (struct hfi_session_set_buffers_pkt *)packet; 1324 1325 ret = pkt_session_set_buffers(pkt, inst, bd); 1326 if (ret) 1327 return ret; 1328 1329 return venus_iface_cmdq_write(hdev, pkt, false); 1330 } 1331 1332 static int venus_session_unset_buffers(struct venus_inst *inst, 1333 struct hfi_buffer_desc *bd) 1334 { 1335 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1336 struct hfi_session_release_buffer_pkt *pkt; 1337 u8 packet[IFACEQ_VAR_LARGE_PKT_SIZE]; 1338 int ret; 1339 1340 if (bd->buffer_type == HFI_BUFFER_INPUT) 1341 return 0; 1342 1343 pkt = (struct hfi_session_release_buffer_pkt *)packet; 1344 1345 ret = pkt_session_unset_buffers(pkt, inst, bd); 1346 if (ret) 1347 return ret; 1348 1349 return venus_iface_cmdq_write(hdev, pkt, true); 1350 } 1351 1352 static int venus_session_load_res(struct venus_inst *inst) 1353 { 1354 return venus_session_cmd(inst, HFI_CMD_SESSION_LOAD_RESOURCES, true); 1355 } 1356 1357 static int venus_session_release_res(struct venus_inst *inst) 1358 { 1359 return venus_session_cmd(inst, HFI_CMD_SESSION_RELEASE_RESOURCES, true); 1360 } 1361 1362 static int venus_session_parse_seq_hdr(struct venus_inst *inst, u32 seq_hdr, 1363 u32 seq_hdr_len) 1364 { 1365 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1366 struct hfi_session_parse_sequence_header_pkt *pkt; 1367 u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; 1368 int ret; 1369 1370 pkt = (struct hfi_session_parse_sequence_header_pkt *)packet; 1371 1372 ret = pkt_session_parse_seq_header(pkt, inst, seq_hdr, seq_hdr_len); 1373 if (ret) 1374 return ret; 1375 1376 ret = venus_iface_cmdq_write(hdev, pkt, false); 1377 if (ret) 1378 return ret; 1379 1380 return 0; 1381 } 1382 1383 static int venus_session_get_seq_hdr(struct venus_inst *inst, u32 seq_hdr, 1384 u32 seq_hdr_len) 1385 { 1386 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1387 struct hfi_session_get_sequence_header_pkt *pkt; 1388 u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; 1389 int ret; 1390 1391 pkt = (struct hfi_session_get_sequence_header_pkt *)packet; 1392 1393 ret = pkt_session_get_seq_hdr(pkt, inst, seq_hdr, seq_hdr_len); 1394 if (ret) 1395 return ret; 1396 1397 return venus_iface_cmdq_write(hdev, pkt, false); 1398 } 1399 1400 static int venus_session_set_property(struct venus_inst *inst, u32 ptype, 1401 void *pdata) 1402 { 1403 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1404 struct hfi_session_set_property_pkt *pkt; 1405 u8 packet[IFACEQ_VAR_LARGE_PKT_SIZE]; 1406 int ret; 1407 1408 pkt = (struct hfi_session_set_property_pkt *)packet; 1409 1410 ret = pkt_session_set_property(pkt, inst, ptype, pdata); 1411 if (ret == -ENOTSUPP) 1412 return 0; 1413 if (ret) 1414 return ret; 1415 1416 return venus_iface_cmdq_write(hdev, pkt, false); 1417 } 1418 1419 static int venus_session_get_property(struct venus_inst *inst, u32 ptype) 1420 { 1421 struct venus_hfi_device *hdev = to_hfi_priv(inst->core); 1422 struct hfi_session_get_property_pkt pkt; 1423 int ret; 1424 1425 ret = pkt_session_get_property(&pkt, inst, ptype); 1426 if (ret) 1427 return ret; 1428 1429 return venus_iface_cmdq_write(hdev, &pkt, true); 1430 } 1431 1432 static int venus_resume(struct venus_core *core) 1433 { 1434 struct venus_hfi_device *hdev = to_hfi_priv(core); 1435 int ret = 0; 1436 1437 mutex_lock(&hdev->lock); 1438 1439 if (!hdev->suspended) 1440 goto unlock; 1441 1442 ret = venus_power_on(hdev); 1443 1444 unlock: 1445 if (!ret) 1446 hdev->suspended = false; 1447 1448 mutex_unlock(&hdev->lock); 1449 1450 return ret; 1451 } 1452 1453 static int venus_suspend_1xx(struct venus_core *core) 1454 { 1455 struct venus_hfi_device *hdev = to_hfi_priv(core); 1456 struct device *dev = core->dev; 1457 void __iomem *cpu_cs_base = hdev->core->cpu_cs_base; 1458 u32 ctrl_status; 1459 int ret; 1460 1461 if (!hdev->power_enabled || hdev->suspended) 1462 return 0; 1463 1464 mutex_lock(&hdev->lock); 1465 ret = venus_is_valid_state(hdev); 1466 mutex_unlock(&hdev->lock); 1467 1468 if (!ret) { 1469 dev_err(dev, "bad state, cannot suspend\n"); 1470 return -EINVAL; 1471 } 1472 1473 ret = venus_prepare_power_collapse(hdev, true); 1474 if (ret) { 1475 dev_err(dev, "prepare for power collapse fail (%d)\n", ret); 1476 return ret; 1477 } 1478 1479 mutex_lock(&hdev->lock); 1480 1481 if (hdev->last_packet_type != HFI_CMD_SYS_PC_PREP) { 1482 mutex_unlock(&hdev->lock); 1483 return -EINVAL; 1484 } 1485 1486 ret = venus_are_queues_empty(hdev); 1487 if (ret < 0 || !ret) { 1488 mutex_unlock(&hdev->lock); 1489 return -EINVAL; 1490 } 1491 1492 ctrl_status = readl(cpu_cs_base + CPU_CS_SCIACMDARG0); 1493 if (!(ctrl_status & CPU_CS_SCIACMDARG0_PC_READY)) { 1494 mutex_unlock(&hdev->lock); 1495 return -EINVAL; 1496 } 1497 1498 ret = venus_power_off(hdev); 1499 if (ret) { 1500 mutex_unlock(&hdev->lock); 1501 return ret; 1502 } 1503 1504 hdev->suspended = true; 1505 1506 mutex_unlock(&hdev->lock); 1507 1508 return 0; 1509 } 1510 1511 static bool venus_cpu_and_video_core_idle(struct venus_hfi_device *hdev) 1512 { 1513 void __iomem *wrapper_base = hdev->core->wrapper_base; 1514 void __iomem *wrapper_tz_base = hdev->core->wrapper_tz_base; 1515 void __iomem *cpu_cs_base = hdev->core->cpu_cs_base; 1516 u32 ctrl_status, cpu_status; 1517 1518 if (IS_V6(hdev->core)) 1519 cpu_status = readl(wrapper_tz_base + WRAPPER_TZ_CPU_STATUS_V6); 1520 else 1521 cpu_status = readl(wrapper_base + WRAPPER_CPU_STATUS); 1522 ctrl_status = readl(cpu_cs_base + CPU_CS_SCIACMDARG0); 1523 1524 if (cpu_status & WRAPPER_CPU_STATUS_WFI && 1525 ctrl_status & CPU_CS_SCIACMDARG0_INIT_IDLE_MSG_MASK) 1526 return true; 1527 1528 return false; 1529 } 1530 1531 static bool venus_cpu_idle_and_pc_ready(struct venus_hfi_device *hdev) 1532 { 1533 void __iomem *wrapper_base = hdev->core->wrapper_base; 1534 void __iomem *wrapper_tz_base = hdev->core->wrapper_tz_base; 1535 void __iomem *cpu_cs_base = hdev->core->cpu_cs_base; 1536 u32 ctrl_status, cpu_status; 1537 1538 if (IS_V6(hdev->core)) 1539 cpu_status = readl(wrapper_tz_base + WRAPPER_TZ_CPU_STATUS_V6); 1540 else 1541 cpu_status = readl(wrapper_base + WRAPPER_CPU_STATUS); 1542 ctrl_status = readl(cpu_cs_base + CPU_CS_SCIACMDARG0); 1543 1544 if (cpu_status & WRAPPER_CPU_STATUS_WFI && 1545 ctrl_status & CPU_CS_SCIACMDARG0_PC_READY) 1546 return true; 1547 1548 return false; 1549 } 1550 1551 static int venus_suspend_3xx(struct venus_core *core) 1552 { 1553 struct venus_hfi_device *hdev = to_hfi_priv(core); 1554 struct device *dev = core->dev; 1555 void __iomem *cpu_cs_base = hdev->core->cpu_cs_base; 1556 u32 ctrl_status; 1557 bool val; 1558 int ret; 1559 1560 if (!hdev->power_enabled || hdev->suspended) 1561 return 0; 1562 1563 mutex_lock(&hdev->lock); 1564 ret = venus_is_valid_state(hdev); 1565 mutex_unlock(&hdev->lock); 1566 1567 if (!ret) { 1568 dev_err(dev, "bad state, cannot suspend\n"); 1569 return -EINVAL; 1570 } 1571 1572 ctrl_status = readl(cpu_cs_base + CPU_CS_SCIACMDARG0); 1573 if (ctrl_status & CPU_CS_SCIACMDARG0_PC_READY) 1574 goto power_off; 1575 1576 /* 1577 * Power collapse sequence for Venus 3xx and 4xx versions: 1578 * 1. Check for ARM9 and video core to be idle by checking WFI bit 1579 * (bit 0) in CPU status register and by checking Idle (bit 30) in 1580 * Control status register for video core. 1581 * 2. Send a command to prepare for power collapse. 1582 * 3. Check for WFI and PC_READY bits. 1583 */ 1584 ret = readx_poll_timeout(venus_cpu_and_video_core_idle, hdev, val, val, 1585 1500, 100 * 1500); 1586 if (ret) 1587 return ret; 1588 1589 ret = venus_prepare_power_collapse(hdev, false); 1590 if (ret) { 1591 dev_err(dev, "prepare for power collapse fail (%d)\n", ret); 1592 return ret; 1593 } 1594 1595 ret = readx_poll_timeout(venus_cpu_idle_and_pc_ready, hdev, val, val, 1596 1500, 100 * 1500); 1597 if (ret) 1598 return ret; 1599 1600 power_off: 1601 mutex_lock(&hdev->lock); 1602 1603 ret = venus_power_off(hdev); 1604 if (ret) { 1605 dev_err(dev, "venus_power_off (%d)\n", ret); 1606 mutex_unlock(&hdev->lock); 1607 return ret; 1608 } 1609 1610 hdev->suspended = true; 1611 1612 mutex_unlock(&hdev->lock); 1613 1614 return 0; 1615 } 1616 1617 static int venus_suspend(struct venus_core *core) 1618 { 1619 if (IS_V3(core) || IS_V4(core) || IS_V6(core)) 1620 return venus_suspend_3xx(core); 1621 1622 return venus_suspend_1xx(core); 1623 } 1624 1625 static const struct hfi_ops venus_hfi_ops = { 1626 .core_init = venus_core_init, 1627 .core_deinit = venus_core_deinit, 1628 .core_ping = venus_core_ping, 1629 .core_trigger_ssr = venus_core_trigger_ssr, 1630 1631 .session_init = venus_session_init, 1632 .session_end = venus_session_end, 1633 .session_abort = venus_session_abort, 1634 .session_flush = venus_session_flush, 1635 .session_start = venus_session_start, 1636 .session_stop = venus_session_stop, 1637 .session_continue = venus_session_continue, 1638 .session_etb = venus_session_etb, 1639 .session_ftb = venus_session_ftb, 1640 .session_set_buffers = venus_session_set_buffers, 1641 .session_unset_buffers = venus_session_unset_buffers, 1642 .session_load_res = venus_session_load_res, 1643 .session_release_res = venus_session_release_res, 1644 .session_parse_seq_hdr = venus_session_parse_seq_hdr, 1645 .session_get_seq_hdr = venus_session_get_seq_hdr, 1646 .session_set_property = venus_session_set_property, 1647 .session_get_property = venus_session_get_property, 1648 1649 .resume = venus_resume, 1650 .suspend = venus_suspend, 1651 1652 .isr = venus_isr, 1653 .isr_thread = venus_isr_thread, 1654 }; 1655 1656 void venus_hfi_destroy(struct venus_core *core) 1657 { 1658 struct venus_hfi_device *hdev = to_hfi_priv(core); 1659 1660 core->priv = NULL; 1661 venus_interface_queues_release(hdev); 1662 mutex_destroy(&hdev->lock); 1663 kfree(hdev); 1664 core->ops = NULL; 1665 } 1666 1667 int venus_hfi_create(struct venus_core *core) 1668 { 1669 struct venus_hfi_device *hdev; 1670 int ret; 1671 1672 hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); 1673 if (!hdev) 1674 return -ENOMEM; 1675 1676 mutex_init(&hdev->lock); 1677 1678 hdev->core = core; 1679 hdev->suspended = true; 1680 core->priv = hdev; 1681 core->ops = &venus_hfi_ops; 1682 1683 ret = venus_interface_queues_init(hdev); 1684 if (ret) 1685 goto err_kfree; 1686 1687 return 0; 1688 1689 err_kfree: 1690 kfree(hdev); 1691 core->priv = NULL; 1692 core->ops = NULL; 1693 return ret; 1694 } 1695 1696 void venus_hfi_queues_reinit(struct venus_core *core) 1697 { 1698 struct venus_hfi_device *hdev = to_hfi_priv(core); 1699 struct hfi_queue_table_header *tbl_hdr; 1700 struct iface_queue *queue; 1701 struct hfi_sfr *sfr; 1702 unsigned int i; 1703 1704 mutex_lock(&hdev->lock); 1705 1706 for (i = 0; i < IFACEQ_NUM; i++) { 1707 queue = &hdev->queues[i]; 1708 queue->qhdr = 1709 IFACEQ_GET_QHDR_START_ADDR(hdev->ifaceq_table.kva, i); 1710 1711 venus_set_qhdr_defaults(queue->qhdr); 1712 1713 queue->qhdr->start_addr = queue->qmem.da; 1714 1715 if (i == IFACEQ_CMD_IDX) 1716 queue->qhdr->type |= HFI_HOST_TO_CTRL_CMD_Q; 1717 else if (i == IFACEQ_MSG_IDX) 1718 queue->qhdr->type |= HFI_CTRL_TO_HOST_MSG_Q; 1719 else if (i == IFACEQ_DBG_IDX) 1720 queue->qhdr->type |= HFI_CTRL_TO_HOST_DBG_Q; 1721 } 1722 1723 tbl_hdr = hdev->ifaceq_table.kva; 1724 tbl_hdr->version = 0; 1725 tbl_hdr->size = IFACEQ_TABLE_SIZE; 1726 tbl_hdr->qhdr0_offset = sizeof(struct hfi_queue_table_header); 1727 tbl_hdr->qhdr_size = sizeof(struct hfi_queue_header); 1728 tbl_hdr->num_q = IFACEQ_NUM; 1729 tbl_hdr->num_active_q = IFACEQ_NUM; 1730 1731 /* 1732 * Set receive request to zero on debug queue as there is no 1733 * need of interrupt from video hardware for debug messages 1734 */ 1735 queue = &hdev->queues[IFACEQ_DBG_IDX]; 1736 queue->qhdr->rx_req = 0; 1737 1738 sfr = hdev->sfr.kva; 1739 sfr->buf_size = ALIGNED_SFR_SIZE; 1740 1741 /* ensure table and queue header structs are settled in memory */ 1742 wmb(); 1743 1744 mutex_unlock(&hdev->lock); 1745 } 1746