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sys/dev/mana/gdma.h
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2021 Microsoft Corp. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * $FreeBSD$ 31 * 32 */ 33 34 #ifndef _GDMA_H 35 #define _GDMA_H 36 37 #include <sys/bus.h> 38 #include <sys/bus_dma.h> 39 #include <sys/types.h> 40 #include <sys/limits.h> 41 #include <sys/sx.h> 42 43 #include "gdma_util.h" 44 #include "shm_channel.h" 45 46 #define GDMA_STATUS_MORE_ENTRIES 0x00000105 47 48 /* Structures labeled with "HW DATA" are exchanged with the hardware. All of 49 * them are naturally aligned and hence don't need __packed. 50 */ 51 52 #define GDMA_BAR0 0 53 54 #define GDMA_IRQNAME_SZ 40 55 56 struct gdma_bus { 57 bus_space_handle_t bar0_h; 58 bus_space_tag_t bar0_t; 59 }; 60 61 struct gdma_msix_entry { 62 int entry; 63 int vector; 64 }; 65 66 enum gdma_request_type { 67 GDMA_VERIFY_VF_DRIVER_VERSION = 1, 68 GDMA_QUERY_MAX_RESOURCES = 2, 69 GDMA_LIST_DEVICES = 3, 70 GDMA_REGISTER_DEVICE = 4, 71 GDMA_DEREGISTER_DEVICE = 5, 72 GDMA_GENERATE_TEST_EQE = 10, 73 GDMA_CREATE_QUEUE = 12, 74 GDMA_DISABLE_QUEUE = 13, 75 GDMA_ALLOCATE_RESOURCE_RANGE = 22, 76 GDMA_DESTROY_RESOURCE_RANGE = 24, 77 GDMA_CREATE_DMA_REGION = 25, 78 GDMA_DMA_REGION_ADD_PAGES = 26, 79 GDMA_DESTROY_DMA_REGION = 27, 80 GDMA_CREATE_PD = 29, 81 GDMA_DESTROY_PD = 30, 82 GDMA_CREATE_MR = 31, 83 GDMA_DESTROY_MR = 32, 84 }; 85 86 #define GDMA_RESOURCE_DOORBELL_PAGE 27 87 88 enum gdma_queue_type { 89 GDMA_INVALID_QUEUE, 90 GDMA_SQ, 91 GDMA_RQ, 92 GDMA_CQ, 93 GDMA_EQ, 94 }; 95 96 enum gdma_work_request_flags { 97 GDMA_WR_NONE = 0, 98 GDMA_WR_OOB_IN_SGL = BIT(0), 99 GDMA_WR_PAD_BY_SGE0 = BIT(1), 100 }; 101 102 enum gdma_eqe_type { 103 GDMA_EQE_COMPLETION = 3, 104 GDMA_EQE_TEST_EVENT = 64, 105 GDMA_EQE_HWC_INIT_EQ_ID_DB = 129, 106 GDMA_EQE_HWC_INIT_DATA = 130, 107 GDMA_EQE_HWC_INIT_DONE = 131, 108 }; 109 110 enum { 111 GDMA_DEVICE_NONE = 0, 112 GDMA_DEVICE_HWC = 1, 113 GDMA_DEVICE_MANA = 2, 114 }; 115 116 typedef uint64_t gdma_obj_handle_t; 117 118 struct gdma_resource { 119 /* Protect the bitmap */ 120 struct mtx lock_spin; 121 122 /* The bitmap size in bits. */ 123 uint32_t size; 124 125 /* The bitmap tracks the resources. */ 126 unsigned long *map; 127 }; 128 129 union gdma_doorbell_entry { 130 uint64_t as_uint64; 131 132 struct { 133 uint64_t id : 24; 134 uint64_t reserved : 8; 135 uint64_t tail_ptr : 31; 136 uint64_t arm : 1; 137 } cq; 138 139 struct { 140 uint64_t id : 24; 141 uint64_t wqe_cnt : 8; 142 uint64_t tail_ptr : 32; 143 } rq; 144 145 struct { 146 uint64_t id : 24; 147 uint64_t reserved : 8; 148 uint64_t tail_ptr : 32; 149 } sq; 150 151 struct { 152 uint64_t id : 16; 153 uint64_t reserved : 16; 154 uint64_t tail_ptr : 31; 155 uint64_t arm : 1; 156 } eq; 157 }; /* HW DATA */ 158 159 struct gdma_msg_hdr { 160 uint32_t hdr_type; 161 uint32_t msg_type; 162 uint16_t msg_version; 163 uint16_t hwc_msg_id; 164 uint32_t msg_size; 165 }; /* HW DATA */ 166 167 struct gdma_dev_id { 168 union { 169 struct { 170 uint16_t type; 171 uint16_t instance; 172 }; 173 174 uint32_t as_uint32; 175 }; 176 }; /* HW DATA */ 177 178 struct gdma_req_hdr { 179 struct gdma_msg_hdr req; 180 struct gdma_msg_hdr resp; /* The expected response */ 181 struct gdma_dev_id dev_id; 182 uint32_t activity_id; 183 }; /* HW DATA */ 184 185 struct gdma_resp_hdr { 186 struct gdma_msg_hdr response; 187 struct gdma_dev_id dev_id; 188 uint32_t activity_id; 189 uint32_t status; 190 uint32_t reserved; 191 }; /* HW DATA */ 192 193 struct gdma_general_req { 194 struct gdma_req_hdr hdr; 195 }; /* HW DATA */ 196 197 #define GDMA_MESSAGE_V1 1 198 199 struct gdma_general_resp { 200 struct gdma_resp_hdr hdr; 201 }; /* HW DATA */ 202 203 #define GDMA_STANDARD_HEADER_TYPE 0 204 205 static inline void 206 mana_gd_init_req_hdr(struct gdma_req_hdr *hdr, uint32_t code, 207 uint32_t req_size, uint32_t resp_size) 208 { 209 hdr->req.hdr_type = GDMA_STANDARD_HEADER_TYPE; 210 hdr->req.msg_type = code; 211 hdr->req.msg_version = GDMA_MESSAGE_V1; 212 hdr->req.msg_size = req_size; 213 214 hdr->resp.hdr_type = GDMA_STANDARD_HEADER_TYPE; 215 hdr->resp.msg_type = code; 216 hdr->resp.msg_version = GDMA_MESSAGE_V1; 217 hdr->resp.msg_size = resp_size; 218 } 219 220 /* The 16-byte struct is part of the GDMA work queue entry (WQE). */ 221 struct gdma_sge { 222 uint64_t address; 223 uint32_t mem_key; 224 uint32_t size; 225 }; /* HW DATA */ 226 227 struct gdma_wqe_request { 228 struct gdma_sge *sgl; 229 uint32_t num_sge; 230 231 uint32_t inline_oob_size; 232 const void *inline_oob_data; 233 234 uint32_t flags; 235 uint32_t client_data_unit; 236 }; 237 238 enum gdma_page_type { 239 GDMA_PAGE_TYPE_4K, 240 }; 241 242 #define GDMA_INVALID_DMA_REGION 0 243 244 struct gdma_mem_info { 245 device_t dev; 246 247 bus_dma_tag_t dma_tag; 248 bus_dmamap_t dma_map; 249 bus_addr_t dma_handle; /* Physical address */ 250 void *virt_addr; /* Virtual address */ 251 uint64_t length; 252 253 /* Allocated by the PF driver */ 254 gdma_obj_handle_t dma_region_handle; 255 }; 256 257 #define REGISTER_ATB_MST_MKEY_LOWER_SIZE 8 258 259 struct gdma_dev { 260 struct gdma_context *gdma_context; 261 262 struct gdma_dev_id dev_id; 263 264 uint32_t pdid; 265 uint32_t doorbell; 266 uint32_t gpa_mkey; 267 268 /* GDMA driver specific pointer */ 269 void *driver_data; 270 }; 271 272 #define MINIMUM_SUPPORTED_PAGE_SIZE PAGE_SIZE 273 274 #define GDMA_CQE_SIZE 64 275 #define GDMA_EQE_SIZE 16 276 #define GDMA_MAX_SQE_SIZE 512 277 #define GDMA_MAX_RQE_SIZE 256 278 279 #define GDMA_COMP_DATA_SIZE 0x3C 280 281 #define GDMA_EVENT_DATA_SIZE 0xC 282 283 /* The WQE size must be a multiple of the Basic Unit, which is 32 bytes. */ 284 #define GDMA_WQE_BU_SIZE 32 285 286 #define INVALID_PDID UINT_MAX 287 #define INVALID_DOORBELL UINT_MAX 288 #define INVALID_MEM_KEY UINT_MAX 289 #define INVALID_QUEUE_ID UINT_MAX 290 #define INVALID_PCI_MSIX_INDEX UINT_MAX 291 292 struct gdma_comp { 293 uint32_t cqe_data[GDMA_COMP_DATA_SIZE / 4]; 294 uint32_t wq_num; 295 bool is_sq; 296 }; 297 298 struct gdma_event { 299 uint32_t details[GDMA_EVENT_DATA_SIZE / 4]; 300 uint8_t type; 301 }; 302 303 struct gdma_queue; 304 305 typedef void gdma_eq_callback(void *context, struct gdma_queue *q, 306 struct gdma_event *e); 307 308 typedef void gdma_cq_callback(void *context, struct gdma_queue *q); 309 310 /* The 'head' is the producer index. For SQ/RQ, when the driver posts a WQE 311 * (Note: the WQE size must be a multiple of the 32-byte Basic Unit), the 312 * driver increases the 'head' in BUs rather than in bytes, and notifies 313 * the HW of the updated head. For EQ/CQ, the driver uses the 'head' to track 314 * the HW head, and increases the 'head' by 1 for every processed EQE/CQE. 315 * 316 * The 'tail' is the consumer index for SQ/RQ. After the CQE of the SQ/RQ is 317 * processed, the driver increases the 'tail' to indicate that WQEs have 318 * been consumed by the HW, so the driver can post new WQEs into the SQ/RQ. 319 * 320 * The driver doesn't use the 'tail' for EQ/CQ, because the driver ensures 321 * that the EQ/CQ is big enough so they can't overflow, and the driver uses 322 * the owner bits mechanism to detect if the queue has become empty. 323 */ 324 struct gdma_queue { 325 struct gdma_dev *gdma_dev; 326 327 enum gdma_queue_type type; 328 uint32_t id; 329 330 struct gdma_mem_info mem_info; 331 332 void *queue_mem_ptr; 333 uint32_t queue_size; 334 335 bool monitor_avl_buf; 336 337 uint32_t head; 338 uint32_t tail; 339 340 /* Extra fields specific to EQ/CQ. */ 341 union { 342 struct { 343 bool disable_needed; 344 345 gdma_eq_callback *callback; 346 void *context; 347 348 unsigned int msix_index; 349 350 uint32_t log2_throttle_limit; 351 } eq; 352 353 struct { 354 gdma_cq_callback *callback; 355 void *context; 356 357 /* For CQ/EQ relationship */ 358 struct gdma_queue *parent; 359 } cq; 360 }; 361 }; 362 363 struct gdma_queue_spec { 364 enum gdma_queue_type type; 365 bool monitor_avl_buf; 366 unsigned int queue_size; 367 368 /* Extra fields specific to EQ/CQ. */ 369 union { 370 struct { 371 gdma_eq_callback *callback; 372 void *context; 373 374 unsigned long log2_throttle_limit; 375 } eq; 376 377 struct { 378 gdma_cq_callback *callback; 379 void *context; 380 381 struct gdma_queue *parent_eq; 382 383 } cq; 384 }; 385 }; 386 387 struct mana_eq { 388 struct gdma_queue *eq; 389 }; 390 391 struct gdma_irq_context { 392 struct gdma_msix_entry msix_e; 393 struct resource *res; 394 driver_intr_t *handler; 395 void *arg; 396 void *cookie; 397 bool requested; 398 int cpu; 399 char name[GDMA_IRQNAME_SZ]; 400 }; 401 402 struct gdma_context { 403 device_t dev; 404 405 struct gdma_bus gd_bus; 406 407 /* Per-vPort max number of queues */ 408 unsigned int max_num_queues; 409 unsigned int max_num_msix; 410 unsigned int num_msix_usable; 411 struct gdma_resource msix_resource; 412 struct gdma_irq_context *irq_contexts; 413 414 /* This maps a CQ index to the queue structure. */ 415 unsigned int max_num_cqs; 416 struct gdma_queue **cq_table; 417 418 /* Protect eq_test_event and test_event_eq_id */ 419 struct sx eq_test_event_sx; 420 struct completion eq_test_event; 421 uint32_t test_event_eq_id; 422 423 struct resource *bar0; 424 struct resource *msix; 425 int msix_rid; 426 void __iomem *shm_base; 427 void __iomem *db_page_base; 428 vm_paddr_t phys_db_page_base; 429 uint32_t db_page_size; 430 431 /* Shared memory chanenl (used to bootstrap HWC) */ 432 struct shm_channel shm_channel; 433 434 /* Hardware communication channel (HWC) */ 435 struct gdma_dev hwc; 436 437 /* Azure network adapter */ 438 struct gdma_dev mana; 439 }; 440 441 #define MAX_NUM_GDMA_DEVICES 4 442 443 static inline bool mana_gd_is_mana(struct gdma_dev *gd) 444 { 445 return gd->dev_id.type == GDMA_DEVICE_MANA; 446 } 447 448 static inline bool mana_gd_is_hwc(struct gdma_dev *gd) 449 { 450 return gd->dev_id.type == GDMA_DEVICE_HWC; 451 } 452 453 uint8_t *mana_gd_get_wqe_ptr(const struct gdma_queue *wq, uint32_t wqe_offset); 454 uint32_t mana_gd_wq_avail_space(struct gdma_queue *wq); 455 456 int mana_gd_test_eq(struct gdma_context *gc, struct gdma_queue *eq); 457 458 int mana_gd_create_hwc_queue(struct gdma_dev *gd, 459 const struct gdma_queue_spec *spec, 460 struct gdma_queue **queue_ptr); 461 462 int mana_gd_create_mana_eq(struct gdma_dev *gd, 463 const struct gdma_queue_spec *spec, 464 struct gdma_queue **queue_ptr); 465 466 int mana_gd_create_mana_wq_cq(struct gdma_dev *gd, 467 const struct gdma_queue_spec *spec, 468 struct gdma_queue **queue_ptr); 469 470 void mana_gd_destroy_queue(struct gdma_context *gc, struct gdma_queue *queue); 471 472 int mana_gd_poll_cq(struct gdma_queue *cq, struct gdma_comp *comp, int num_cqe); 473 474 void mana_gd_ring_cq(struct gdma_queue *cq, uint8_t arm_bit); 475 476 struct gdma_wqe { 477 uint32_t reserved :24; 478 uint32_t last_vbytes :8; 479 480 union { 481 uint32_t flags; 482 483 struct { 484 uint32_t num_sge :8; 485 uint32_t inline_oob_size_div4 :3; 486 uint32_t client_oob_in_sgl :1; 487 uint32_t reserved1 :4; 488 uint32_t client_data_unit :14; 489 uint32_t reserved2 :2; 490 }; 491 }; 492 }; /* HW DATA */ 493 494 #define INLINE_OOB_SMALL_SIZE 8 495 #define INLINE_OOB_LARGE_SIZE 24 496 497 #define MAX_TX_WQE_SIZE 512 498 #define MAX_RX_WQE_SIZE 256 499 500 #define MAX_TX_WQE_SGL_ENTRIES ((GDMA_MAX_SQE_SIZE - \ 501 sizeof(struct gdma_sge) - INLINE_OOB_SMALL_SIZE) / \ 502 sizeof(struct gdma_sge)) 503 504 #define MAX_RX_WQE_SGL_ENTRIES ((GDMA_MAX_RQE_SIZE - \ 505 sizeof(struct gdma_sge)) / sizeof(struct gdma_sge)) 506 507 struct gdma_cqe { 508 uint32_t cqe_data[GDMA_COMP_DATA_SIZE / 4]; 509 510 union { 511 uint32_t as_uint32; 512 513 struct { 514 uint32_t wq_num :24; 515 uint32_t is_sq :1; 516 uint32_t reserved :4; 517 uint32_t owner_bits :3; 518 }; 519 } cqe_info; 520 }; /* HW DATA */ 521 522 #define GDMA_CQE_OWNER_BITS 3 523 524 #define GDMA_CQE_OWNER_MASK ((1 << GDMA_CQE_OWNER_BITS) - 1) 525 526 #define SET_ARM_BIT 1 527 528 #define GDMA_EQE_OWNER_BITS 3 529 530 union gdma_eqe_info { 531 uint32_t as_uint32; 532 533 struct { 534 uint32_t type : 8; 535 uint32_t reserved1 : 8; 536 uint32_t client_id : 2; 537 uint32_t reserved2 : 11; 538 uint32_t owner_bits : 3; 539 }; 540 }; /* HW DATA */ 541 542 #define GDMA_EQE_OWNER_MASK ((1 << GDMA_EQE_OWNER_BITS) - 1) 543 #define INITIALIZED_OWNER_BIT(log2_num_entries) (1UL << (log2_num_entries)) 544 545 struct gdma_eqe { 546 uint32_t details[GDMA_EVENT_DATA_SIZE / 4]; 547 uint32_t eqe_info; 548 }; /* HW DATA */ 549 550 #define GDMA_REG_DB_PAGE_OFFSET 8 551 #define GDMA_REG_DB_PAGE_SIZE 0x10 552 #define GDMA_REG_SHM_OFFSET 0x18 553 554 struct gdma_posted_wqe_info { 555 uint32_t wqe_size_in_bu; 556 }; 557 558 /* GDMA_GENERATE_TEST_EQE */ 559 struct gdma_generate_test_event_req { 560 struct gdma_req_hdr hdr; 561 uint32_t queue_index; 562 }; /* HW DATA */ 563 564 /* GDMA_VERIFY_VF_DRIVER_VERSION */ 565 enum { 566 GDMA_PROTOCOL_V1 = 1, 567 GDMA_PROTOCOL_FIRST = GDMA_PROTOCOL_V1, 568 GDMA_PROTOCOL_LAST = GDMA_PROTOCOL_V1, 569 }; 570 571 struct gdma_verify_ver_req { 572 struct gdma_req_hdr hdr; 573 574 /* Mandatory fields required for protocol establishment */ 575 uint64_t protocol_ver_min; 576 uint64_t protocol_ver_max; 577 uint64_t drv_cap_flags1; 578 uint64_t drv_cap_flags2; 579 uint64_t drv_cap_flags3; 580 uint64_t drv_cap_flags4; 581 582 /* Advisory fields */ 583 uint64_t drv_ver; 584 uint32_t os_type; /* Linux = 0x10; Windows = 0x20; Other = 0x30 */ 585 uint32_t reserved; 586 uint32_t os_ver_major; 587 uint32_t os_ver_minor; 588 uint32_t os_ver_build; 589 uint32_t os_ver_platform; 590 uint64_t reserved_2; 591 uint8_t os_ver_str1[128]; 592 uint8_t os_ver_str2[128]; 593 uint8_t os_ver_str3[128]; 594 uint8_t os_ver_str4[128]; 595 }; /* HW DATA */ 596 597 struct gdma_verify_ver_resp { 598 struct gdma_resp_hdr hdr; 599 uint64_t gdma_protocol_ver; 600 uint64_t pf_cap_flags1; 601 uint64_t pf_cap_flags2; 602 uint64_t pf_cap_flags3; 603 uint64_t pf_cap_flags4; 604 }; /* HW DATA */ 605 606 /* GDMA_QUERY_MAX_RESOURCES */ 607 struct gdma_query_max_resources_resp { 608 struct gdma_resp_hdr hdr; 609 uint32_t status; 610 uint32_t max_sq; 611 uint32_t max_rq; 612 uint32_t max_cq; 613 uint32_t max_eq; 614 uint32_t max_db; 615 uint32_t max_mst; 616 uint32_t max_cq_mod_ctx; 617 uint32_t max_mod_cq; 618 uint32_t max_msix; 619 }; /* HW DATA */ 620 621 /* GDMA_LIST_DEVICES */ 622 struct gdma_list_devices_resp { 623 struct gdma_resp_hdr hdr; 624 uint32_t num_of_devs; 625 uint32_t reserved; 626 struct gdma_dev_id devs[64]; 627 }; /* HW DATA */ 628 629 /* GDMA_REGISTER_DEVICE */ 630 struct gdma_register_device_resp { 631 struct gdma_resp_hdr hdr; 632 uint32_t pdid; 633 uint32_t gpa_mkey; 634 uint32_t db_id; 635 }; /* HW DATA */ 636 637 struct gdma_allocate_resource_range_req { 638 struct gdma_req_hdr hdr; 639 uint32_t resource_type; 640 uint32_t num_resources; 641 uint32_t alignment; 642 uint32_t allocated_resources; 643 }; 644 645 struct gdma_allocate_resource_range_resp { 646 struct gdma_resp_hdr hdr; 647 uint32_t allocated_resources; 648 }; 649 650 struct gdma_destroy_resource_range_req { 651 struct gdma_req_hdr hdr; 652 uint32_t resource_type; 653 uint32_t num_resources; 654 uint32_t allocated_resources; 655 }; 656 657 /* GDMA_CREATE_QUEUE */ 658 struct gdma_create_queue_req { 659 struct gdma_req_hdr hdr; 660 uint32_t type; 661 uint32_t reserved1; 662 uint32_t pdid; 663 uint32_t doolbell_id; 664 gdma_obj_handle_t gdma_region; 665 uint32_t reserved2; 666 uint32_t queue_size; 667 uint32_t log2_throttle_limit; 668 uint32_t eq_pci_msix_index; 669 uint32_t cq_mod_ctx_id; 670 uint32_t cq_parent_eq_id; 671 uint8_t rq_drop_on_overrun; 672 uint8_t rq_err_on_wqe_overflow; 673 uint8_t rq_chain_rec_wqes; 674 uint8_t sq_hw_db; 675 uint32_t reserved3; 676 }; /* HW DATA */ 677 678 struct gdma_create_queue_resp { 679 struct gdma_resp_hdr hdr; 680 uint32_t queue_index; 681 }; /* HW DATA */ 682 683 /* GDMA_DISABLE_QUEUE */ 684 struct gdma_disable_queue_req { 685 struct gdma_req_hdr hdr; 686 uint32_t type; 687 uint32_t queue_index; 688 uint32_t alloc_res_id_on_creation; 689 }; /* HW DATA */ 690 691 enum atb_page_size { 692 ATB_PAGE_SIZE_4K, 693 ATB_PAGE_SIZE_8K, 694 ATB_PAGE_SIZE_16K, 695 ATB_PAGE_SIZE_32K, 696 ATB_PAGE_SIZE_64K, 697 ATB_PAGE_SIZE_128K, 698 ATB_PAGE_SIZE_256K, 699 ATB_PAGE_SIZE_512K, 700 ATB_PAGE_SIZE_1M, 701 ATB_PAGE_SIZE_2M, 702 ATB_PAGE_SIZE_MAX, 703 }; 704 705 enum gdma_mr_access_flags { 706 GDMA_ACCESS_FLAG_LOCAL_READ = BIT(0), 707 GDMA_ACCESS_FLAG_LOCAL_WRITE = BIT(1), 708 GDMA_ACCESS_FLAG_REMOTE_READ = BIT(2), 709 GDMA_ACCESS_FLAG_REMOTE_WRITE = BIT(3), 710 GDMA_ACCESS_FLAG_REMOTE_ATOMIC = BIT(4), 711 }; 712 713 /* GDMA_CREATE_DMA_REGION */ 714 struct gdma_create_dma_region_req { 715 struct gdma_req_hdr hdr; 716 717 /* The total size of the DMA region */ 718 uint64_t length; 719 720 /* The offset in the first page */ 721 uint32_t offset_in_page; 722 723 /* enum gdma_page_type */ 724 uint32_t gdma_page_type; 725 726 /* The total number of pages */ 727 uint32_t page_count; 728 729 /* If page_addr_list_len is smaller than page_count, 730 * the remaining page addresses will be added via the 731 * message GDMA_DMA_REGION_ADD_PAGES. 732 */ 733 uint32_t page_addr_list_len; 734 uint64_t page_addr_list[]; 735 }; /* HW DATA */ 736 737 struct gdma_create_dma_region_resp { 738 struct gdma_resp_hdr hdr; 739 gdma_obj_handle_t dma_region_handle; 740 }; /* HW DATA */ 741 742 /* GDMA_DMA_REGION_ADD_PAGES */ 743 struct gdma_dma_region_add_pages_req { 744 struct gdma_req_hdr hdr; 745 746 gdma_obj_handle_t dma_region_handle; 747 748 uint32_t page_addr_list_len; 749 uint32_t reserved3; 750 751 uint64_t page_addr_list[]; 752 }; /* HW DATA */ 753 754 /* GDMA_DESTROY_DMA_REGION */ 755 struct gdma_destroy_dma_region_req { 756 struct gdma_req_hdr hdr; 757 758 gdma_obj_handle_t dma_region_handle; 759 }; /* HW DATA */ 760 761 enum gdma_pd_flags { 762 GDMA_PD_FLAG_INVALID = 0, 763 }; 764 765 struct gdma_create_pd_req { 766 struct gdma_req_hdr hdr; 767 enum gdma_pd_flags flags; 768 uint32_t reserved; 769 };/* HW DATA */ 770 771 struct gdma_create_pd_resp { 772 struct gdma_resp_hdr hdr; 773 gdma_obj_handle_t pd_handle; 774 uint32_t pd_id; 775 uint32_t reserved; 776 };/* HW DATA */ 777 778 struct gdma_destroy_pd_req { 779 struct gdma_req_hdr hdr; 780 gdma_obj_handle_t pd_handle; 781 };/* HW DATA */ 782 783 struct gdma_destory_pd_resp { 784 struct gdma_resp_hdr hdr; 785 };/* HW DATA */ 786 787 enum gdma_mr_type { 788 /* Guest Virtual Address - MRs of this type allow access 789 * to memory mapped by PTEs associated with this MR using a virtual 790 * address that is set up in the MST 791 */ 792 GDMA_MR_TYPE_GVA = 2, 793 }; 794 795 struct gdma_create_mr_params { 796 gdma_obj_handle_t pd_handle; 797 enum gdma_mr_type mr_type; 798 union { 799 struct { 800 gdma_obj_handle_t dma_region_handle; 801 uint64_t virtual_address; 802 enum gdma_mr_access_flags access_flags; 803 } gva; 804 }; 805 }; 806 807 struct gdma_create_mr_request { 808 struct gdma_req_hdr hdr; 809 gdma_obj_handle_t pd_handle; 810 enum gdma_mr_type mr_type; 811 uint32_t reserved_1; 812 813 union { 814 struct { 815 gdma_obj_handle_t dma_region_handle; 816 uint64_t virtual_address; 817 enum gdma_mr_access_flags access_flags; 818 } gva; 819 820 }; 821 uint32_t reserved_2; 822 };/* HW DATA */ 823 824 struct gdma_create_mr_response { 825 struct gdma_resp_hdr hdr; 826 gdma_obj_handle_t mr_handle; 827 uint32_t lkey; 828 uint32_t rkey; 829 };/* HW DATA */ 830 831 struct gdma_destroy_mr_request { 832 struct gdma_req_hdr hdr; 833 gdma_obj_handle_t mr_handle; 834 };/* HW DATA */ 835 836 struct gdma_destroy_mr_response { 837 struct gdma_resp_hdr hdr; 838 };/* HW DATA */ 839 840 int mana_gd_verify_vf_version(device_t dev); 841 842 int mana_gd_register_device(struct gdma_dev *gd); 843 int mana_gd_deregister_device(struct gdma_dev *gd); 844 845 int mana_gd_post_work_request(struct gdma_queue *wq, 846 const struct gdma_wqe_request *wqe_req, 847 struct gdma_posted_wqe_info *wqe_info); 848 849 int mana_gd_post_and_ring(struct gdma_queue *queue, 850 const struct gdma_wqe_request *wqe, 851 struct gdma_posted_wqe_info *wqe_info); 852 853 int mana_gd_alloc_res_map(uint32_t res_avil, struct gdma_resource *r, 854 const char *lock_name); 855 void mana_gd_free_res_map(struct gdma_resource *r); 856 857 void mana_gd_wq_ring_doorbell(struct gdma_context *gc, 858 struct gdma_queue *queue); 859 860 int mana_gd_alloc_memory(struct gdma_context *gc, unsigned int length, 861 struct gdma_mem_info *gmi); 862 863 void mana_gd_free_memory(struct gdma_mem_info *gmi); 864 865 void mana_gd_dma_map_paddr(void *arg, bus_dma_segment_t *segs, 866 int nseg, int error); 867 868 int mana_gd_send_request(struct gdma_context *gc, uint32_t req_len, 869 const void *req, uint32_t resp_len, void *resp); 870 871 int mana_gd_allocate_doorbell_page(struct gdma_context *gc, 872 int *doorbell_page); 873 874 int mana_gd_destroy_doorbell_page(struct gdma_context *gc, 875 int doorbell_page); 876 877 int mana_gd_destroy_dma_region(struct gdma_context *gc, 878 gdma_obj_handle_t dma_region_handle); 879 #endif /* _GDMA_H */
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