1 /* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */ 2 /* Copyright 2013-2016 Freescale Semiconductor Inc. 3 * Copyright 2016 NXP 4 */ 5 #ifndef __FSL_DPNI_H 6 #define __FSL_DPNI_H 7 8 #include "dpkg.h" 9 10 struct fsl_mc_io; 11 12 /** 13 * Data Path Network Interface API 14 * Contains initialization APIs and runtime control APIs for DPNI 15 */ 16 17 /** General DPNI macros */ 18 19 /** 20 * Maximum number of traffic classes 21 */ 22 #define DPNI_MAX_TC 8 23 /** 24 * Maximum number of buffer pools per DPNI 25 */ 26 #define DPNI_MAX_DPBP 8 27 28 /** 29 * All traffic classes considered; see dpni_set_queue() 30 */ 31 #define DPNI_ALL_TCS (u8)(-1) 32 /** 33 * All flows within traffic class considered; see dpni_set_queue() 34 */ 35 #define DPNI_ALL_TC_FLOWS (u16)(-1) 36 /** 37 * Generate new flow ID; see dpni_set_queue() 38 */ 39 #define DPNI_NEW_FLOW_ID (u16)(-1) 40 41 /** 42 * Tx traffic is always released to a buffer pool on transmit, there are no 43 * resources allocated to have the frames confirmed back to the source after 44 * transmission. 45 */ 46 #define DPNI_OPT_TX_FRM_RELEASE 0x000001 47 /** 48 * Disables support for MAC address filtering for addresses other than primary 49 * MAC address. This affects both unicast and multicast. Promiscuous mode can 50 * still be enabled/disabled for both unicast and multicast. If promiscuous mode 51 * is disabled, only traffic matching the primary MAC address will be accepted. 52 */ 53 #define DPNI_OPT_NO_MAC_FILTER 0x000002 54 /** 55 * Allocate policers for this DPNI. They can be used to rate-limit traffic per 56 * traffic class (TC) basis. 57 */ 58 #define DPNI_OPT_HAS_POLICING 0x000004 59 /** 60 * Congestion can be managed in several ways, allowing the buffer pool to 61 * deplete on ingress, taildrop on each queue or use congestion groups for sets 62 * of queues. If set, it configures a single congestion groups across all TCs. 63 * If reset, a congestion group is allocated for each TC. Only relevant if the 64 * DPNI has multiple traffic classes. 65 */ 66 #define DPNI_OPT_SHARED_CONGESTION 0x000008 67 /** 68 * Enables TCAM for Flow Steering and QoS look-ups. If not specified, all 69 * look-ups are exact match. Note that TCAM is not available on LS1088 and its 70 * variants. Setting this bit on these SoCs will trigger an error. 71 */ 72 #define DPNI_OPT_HAS_KEY_MASKING 0x000010 73 /** 74 * Disables the flow steering table. 75 */ 76 #define DPNI_OPT_NO_FS 0x000020 77 78 int dpni_open(struct fsl_mc_io *mc_io, 79 u32 cmd_flags, 80 int dpni_id, 81 u16 *token); 82 83 int dpni_close(struct fsl_mc_io *mc_io, 84 u32 cmd_flags, 85 u16 token); 86 87 /** 88 * struct dpni_pools_cfg - Structure representing buffer pools configuration 89 * @num_dpbp: Number of DPBPs 90 * @pools: Array of buffer pools parameters; The number of valid entries 91 * must match 'num_dpbp' value 92 * @pools.dpbp_id: DPBP object ID 93 * @pools.buffer_size: Buffer size 94 * @pools.backup_pool: Backup pool 95 */ 96 struct dpni_pools_cfg { 97 u8 num_dpbp; 98 struct { 99 int dpbp_id; 100 u16 buffer_size; 101 int backup_pool; 102 } pools[DPNI_MAX_DPBP]; 103 }; 104 105 int dpni_set_pools(struct fsl_mc_io *mc_io, 106 u32 cmd_flags, 107 u16 token, 108 const struct dpni_pools_cfg *cfg); 109 110 int dpni_enable(struct fsl_mc_io *mc_io, 111 u32 cmd_flags, 112 u16 token); 113 114 int dpni_disable(struct fsl_mc_io *mc_io, 115 u32 cmd_flags, 116 u16 token); 117 118 int dpni_is_enabled(struct fsl_mc_io *mc_io, 119 u32 cmd_flags, 120 u16 token, 121 int *en); 122 123 int dpni_reset(struct fsl_mc_io *mc_io, 124 u32 cmd_flags, 125 u16 token); 126 127 /** 128 * DPNI IRQ Index and Events 129 */ 130 131 /** 132 * IRQ index 133 */ 134 #define DPNI_IRQ_INDEX 0 135 /** 136 * IRQ event - indicates a change in link state 137 */ 138 #define DPNI_IRQ_EVENT_LINK_CHANGED 0x00000001 139 140 int dpni_set_irq_enable(struct fsl_mc_io *mc_io, 141 u32 cmd_flags, 142 u16 token, 143 u8 irq_index, 144 u8 en); 145 146 int dpni_get_irq_enable(struct fsl_mc_io *mc_io, 147 u32 cmd_flags, 148 u16 token, 149 u8 irq_index, 150 u8 *en); 151 152 int dpni_set_irq_mask(struct fsl_mc_io *mc_io, 153 u32 cmd_flags, 154 u16 token, 155 u8 irq_index, 156 u32 mask); 157 158 int dpni_get_irq_mask(struct fsl_mc_io *mc_io, 159 u32 cmd_flags, 160 u16 token, 161 u8 irq_index, 162 u32 *mask); 163 164 int dpni_get_irq_status(struct fsl_mc_io *mc_io, 165 u32 cmd_flags, 166 u16 token, 167 u8 irq_index, 168 u32 *status); 169 170 int dpni_clear_irq_status(struct fsl_mc_io *mc_io, 171 u32 cmd_flags, 172 u16 token, 173 u8 irq_index, 174 u32 status); 175 176 /** 177 * struct dpni_attr - Structure representing DPNI attributes 178 * @options: Any combination of the following options: 179 * DPNI_OPT_TX_FRM_RELEASE 180 * DPNI_OPT_NO_MAC_FILTER 181 * DPNI_OPT_HAS_POLICING 182 * DPNI_OPT_SHARED_CONGESTION 183 * DPNI_OPT_HAS_KEY_MASKING 184 * DPNI_OPT_NO_FS 185 * @num_queues: Number of Tx and Rx queues used for traffic distribution. 186 * @num_tcs: Number of traffic classes (TCs), reserved for the DPNI. 187 * @mac_filter_entries: Number of entries in the MAC address filtering table. 188 * @vlan_filter_entries: Number of entries in the VLAN address filtering table. 189 * @qos_entries: Number of entries in the QoS classification table. 190 * @fs_entries: Number of entries in the flow steering table. 191 * @qos_key_size: Size, in bytes, of the QoS look-up key. Defining a key larger 192 * than this when adding QoS entries will result in an error. 193 * @fs_key_size: Size, in bytes, of the flow steering look-up key. Defining a 194 * key larger than this when composing the hash + FS key will 195 * result in an error. 196 * @wriop_version: Version of WRIOP HW block. The 3 version values are stored 197 * on 6, 5, 5 bits respectively. 198 */ 199 struct dpni_attr { 200 u32 options; 201 u8 num_queues; 202 u8 num_tcs; 203 u8 mac_filter_entries; 204 u8 vlan_filter_entries; 205 u8 qos_entries; 206 u16 fs_entries; 207 u8 qos_key_size; 208 u8 fs_key_size; 209 u16 wriop_version; 210 }; 211 212 int dpni_get_attributes(struct fsl_mc_io *mc_io, 213 u32 cmd_flags, 214 u16 token, 215 struct dpni_attr *attr); 216 217 /** 218 * DPNI errors 219 */ 220 221 /** 222 * Extract out of frame header error 223 */ 224 #define DPNI_ERROR_EOFHE 0x00020000 225 /** 226 * Frame length error 227 */ 228 #define DPNI_ERROR_FLE 0x00002000 229 /** 230 * Frame physical error 231 */ 232 #define DPNI_ERROR_FPE 0x00001000 233 /** 234 * Parsing header error 235 */ 236 #define DPNI_ERROR_PHE 0x00000020 237 /** 238 * Parser L3 checksum error 239 */ 240 #define DPNI_ERROR_L3CE 0x00000004 241 /** 242 * Parser L3 checksum error 243 */ 244 #define DPNI_ERROR_L4CE 0x00000001 245 246 /** 247 * enum dpni_error_action - Defines DPNI behavior for errors 248 * @DPNI_ERROR_ACTION_DISCARD: Discard the frame 249 * @DPNI_ERROR_ACTION_CONTINUE: Continue with the normal flow 250 * @DPNI_ERROR_ACTION_SEND_TO_ERROR_QUEUE: Send the frame to the error queue 251 */ 252 enum dpni_error_action { 253 DPNI_ERROR_ACTION_DISCARD = 0, 254 DPNI_ERROR_ACTION_CONTINUE = 1, 255 DPNI_ERROR_ACTION_SEND_TO_ERROR_QUEUE = 2 256 }; 257 258 /** 259 * struct dpni_error_cfg - Structure representing DPNI errors treatment 260 * @errors: Errors mask; use 'DPNI_ERROR__<X> 261 * @error_action: The desired action for the errors mask 262 * @set_frame_annotation: Set to '1' to mark the errors in frame annotation 263 * status (FAS); relevant only for the non-discard action 264 */ 265 struct dpni_error_cfg { 266 u32 errors; 267 enum dpni_error_action error_action; 268 int set_frame_annotation; 269 }; 270 271 int dpni_set_errors_behavior(struct fsl_mc_io *mc_io, 272 u32 cmd_flags, 273 u16 token, 274 struct dpni_error_cfg *cfg); 275 276 /** 277 * DPNI buffer layout modification options 278 */ 279 280 /** 281 * Select to modify the time-stamp setting 282 */ 283 #define DPNI_BUF_LAYOUT_OPT_TIMESTAMP 0x00000001 284 /** 285 * Select to modify the parser-result setting; not applicable for Tx 286 */ 287 #define DPNI_BUF_LAYOUT_OPT_PARSER_RESULT 0x00000002 288 /** 289 * Select to modify the frame-status setting 290 */ 291 #define DPNI_BUF_LAYOUT_OPT_FRAME_STATUS 0x00000004 292 /** 293 * Select to modify the private-data-size setting 294 */ 295 #define DPNI_BUF_LAYOUT_OPT_PRIVATE_DATA_SIZE 0x00000008 296 /** 297 * Select to modify the data-alignment setting 298 */ 299 #define DPNI_BUF_LAYOUT_OPT_DATA_ALIGN 0x00000010 300 /** 301 * Select to modify the data-head-room setting 302 */ 303 #define DPNI_BUF_LAYOUT_OPT_DATA_HEAD_ROOM 0x00000020 304 /** 305 * Select to modify the data-tail-room setting 306 */ 307 #define DPNI_BUF_LAYOUT_OPT_DATA_TAIL_ROOM 0x00000040 308 309 /** 310 * struct dpni_buffer_layout - Structure representing DPNI buffer layout 311 * @options: Flags representing the suggested modifications to the buffer 312 * layout; Use any combination of 'DPNI_BUF_LAYOUT_OPT_<X>' flags 313 * @pass_timestamp: Pass timestamp value 314 * @pass_parser_result: Pass parser results 315 * @pass_frame_status: Pass frame status 316 * @private_data_size: Size kept for private data (in bytes) 317 * @data_align: Data alignment 318 * @data_head_room: Data head room 319 * @data_tail_room: Data tail room 320 */ 321 struct dpni_buffer_layout { 322 u32 options; 323 int pass_timestamp; 324 int pass_parser_result; 325 int pass_frame_status; 326 u16 private_data_size; 327 u16 data_align; 328 u16 data_head_room; 329 u16 data_tail_room; 330 }; 331 332 /** 333 * enum dpni_queue_type - Identifies a type of queue targeted by the command 334 * @DPNI_QUEUE_RX: Rx queue 335 * @DPNI_QUEUE_TX: Tx queue 336 * @DPNI_QUEUE_TX_CONFIRM: Tx confirmation queue 337 * @DPNI_QUEUE_RX_ERR: Rx error queue 338 */enum dpni_queue_type { 339 DPNI_QUEUE_RX, 340 DPNI_QUEUE_TX, 341 DPNI_QUEUE_TX_CONFIRM, 342 DPNI_QUEUE_RX_ERR, 343 }; 344 345 int dpni_get_buffer_layout(struct fsl_mc_io *mc_io, 346 u32 cmd_flags, 347 u16 token, 348 enum dpni_queue_type qtype, 349 struct dpni_buffer_layout *layout); 350 351 int dpni_set_buffer_layout(struct fsl_mc_io *mc_io, 352 u32 cmd_flags, 353 u16 token, 354 enum dpni_queue_type qtype, 355 const struct dpni_buffer_layout *layout); 356 357 /** 358 * enum dpni_offload - Identifies a type of offload targeted by the command 359 * @DPNI_OFF_RX_L3_CSUM: Rx L3 checksum validation 360 * @DPNI_OFF_RX_L4_CSUM: Rx L4 checksum validation 361 * @DPNI_OFF_TX_L3_CSUM: Tx L3 checksum generation 362 * @DPNI_OFF_TX_L4_CSUM: Tx L4 checksum generation 363 */ 364 enum dpni_offload { 365 DPNI_OFF_RX_L3_CSUM, 366 DPNI_OFF_RX_L4_CSUM, 367 DPNI_OFF_TX_L3_CSUM, 368 DPNI_OFF_TX_L4_CSUM, 369 }; 370 371 int dpni_set_offload(struct fsl_mc_io *mc_io, 372 u32 cmd_flags, 373 u16 token, 374 enum dpni_offload type, 375 u32 config); 376 377 int dpni_get_offload(struct fsl_mc_io *mc_io, 378 u32 cmd_flags, 379 u16 token, 380 enum dpni_offload type, 381 u32 *config); 382 383 int dpni_get_qdid(struct fsl_mc_io *mc_io, 384 u32 cmd_flags, 385 u16 token, 386 enum dpni_queue_type qtype, 387 u16 *qdid); 388 389 int dpni_get_tx_data_offset(struct fsl_mc_io *mc_io, 390 u32 cmd_flags, 391 u16 token, 392 u16 *data_offset); 393 394 #define DPNI_STATISTICS_CNT 7 395 396 /** 397 * union dpni_statistics - Union describing the DPNI statistics 398 * @page_0: Page_0 statistics structure 399 * @page_0.ingress_all_frames: Ingress frame count 400 * @page_0.ingress_all_bytes: Ingress byte count 401 * @page_0.ingress_multicast_frames: Ingress multicast frame count 402 * @page_0.ingress_multicast_bytes: Ingress multicast byte count 403 * @page_0.ingress_broadcast_frames: Ingress broadcast frame count 404 * @page_0.ingress_broadcast_bytes: Ingress broadcast byte count 405 * @page_1: Page_1 statistics structure 406 * @page_1.egress_all_frames: Egress frame count 407 * @page_1.egress_all_bytes: Egress byte count 408 * @page_1.egress_multicast_frames: Egress multicast frame count 409 * @page_1.egress_multicast_bytes: Egress multicast byte count 410 * @page_1.egress_broadcast_frames: Egress broadcast frame count 411 * @page_1.egress_broadcast_bytes: Egress broadcast byte count 412 * @page_2: Page_2 statistics structure 413 * @page_2.ingress_filtered_frames: Ingress filtered frame count 414 * @page_2.ingress_discarded_frames: Ingress discarded frame count 415 * @page_2.ingress_nobuffer_discards: Ingress discarded frame count due to 416 * lack of buffers 417 * @page_2.egress_discarded_frames: Egress discarded frame count 418 * @page_2.egress_confirmed_frames: Egress confirmed frame count 419 * @page3: Page_3 statistics structure 420 * @page_3.egress_dequeue_bytes: Cumulative count of the number of bytes 421 * dequeued from egress FQs 422 * @page_3.egress_dequeue_frames: Cumulative count of the number of frames 423 * dequeued from egress FQs 424 * @page_3.egress_reject_bytes: Cumulative count of the number of bytes in 425 * egress frames whose enqueue was rejected 426 * @page_3.egress_reject_frames: Cumulative count of the number of egress 427 * frames whose enqueue was rejected 428 * @page_4: Page_4 statistics structure: congestion points 429 * @page_4.cgr_reject_frames: number of rejected frames due to congestion point 430 * @page_4.cgr_reject_bytes: number of rejected bytes due to congestion point 431 * @page_5: Page_5 statistics structure: policer 432 * @page_5.policer_cnt_red: NUmber of red colored frames 433 * @page_5.policer_cnt_yellow: number of yellow colored frames 434 * @page_5.policer_cnt_green: number of green colored frames 435 * @page_5.policer_cnt_re_red: number of recolored red frames 436 * @page_5.policer_cnt_re_yellow: number of recolored yellow frames 437 * @page_6: Page_6 statistics structure 438 * @page_6.tx_pending_frames: total number of frames pending in egress FQs 439 * @raw: raw statistics structure, used to index counters 440 */ 441 union dpni_statistics { 442 struct { 443 u64 ingress_all_frames; 444 u64 ingress_all_bytes; 445 u64 ingress_multicast_frames; 446 u64 ingress_multicast_bytes; 447 u64 ingress_broadcast_frames; 448 u64 ingress_broadcast_bytes; 449 } page_0; 450 struct { 451 u64 egress_all_frames; 452 u64 egress_all_bytes; 453 u64 egress_multicast_frames; 454 u64 egress_multicast_bytes; 455 u64 egress_broadcast_frames; 456 u64 egress_broadcast_bytes; 457 } page_1; 458 struct { 459 u64 ingress_filtered_frames; 460 u64 ingress_discarded_frames; 461 u64 ingress_nobuffer_discards; 462 u64 egress_discarded_frames; 463 u64 egress_confirmed_frames; 464 } page_2; 465 struct { 466 u64 egress_dequeue_bytes; 467 u64 egress_dequeue_frames; 468 u64 egress_reject_bytes; 469 u64 egress_reject_frames; 470 } page_3; 471 struct { 472 u64 cgr_reject_frames; 473 u64 cgr_reject_bytes; 474 } page_4; 475 struct { 476 u64 policer_cnt_red; 477 u64 policer_cnt_yellow; 478 u64 policer_cnt_green; 479 u64 policer_cnt_re_red; 480 u64 policer_cnt_re_yellow; 481 } page_5; 482 struct { 483 u64 tx_pending_frames; 484 } page_6; 485 struct { 486 u64 counter[DPNI_STATISTICS_CNT]; 487 } raw; 488 }; 489 490 int dpni_get_statistics(struct fsl_mc_io *mc_io, 491 u32 cmd_flags, 492 u16 token, 493 u8 page, 494 union dpni_statistics *stat); 495 496 /** 497 * Enable auto-negotiation 498 */ 499 #define DPNI_LINK_OPT_AUTONEG 0x0000000000000001ULL 500 /** 501 * Enable half-duplex mode 502 */ 503 #define DPNI_LINK_OPT_HALF_DUPLEX 0x0000000000000002ULL 504 /** 505 * Enable pause frames 506 */ 507 #define DPNI_LINK_OPT_PAUSE 0x0000000000000004ULL 508 /** 509 * Enable a-symmetric pause frames 510 */ 511 #define DPNI_LINK_OPT_ASYM_PAUSE 0x0000000000000008ULL 512 513 /** 514 * struct - Structure representing DPNI link configuration 515 * @rate: Rate 516 * @options: Mask of available options; use 'DPNI_LINK_OPT_<X>' values 517 */ 518 struct dpni_link_cfg { 519 u32 rate; 520 u64 options; 521 }; 522 523 int dpni_set_link_cfg(struct fsl_mc_io *mc_io, 524 u32 cmd_flags, 525 u16 token, 526 const struct dpni_link_cfg *cfg); 527 528 int dpni_get_link_cfg(struct fsl_mc_io *mc_io, 529 u32 cmd_flags, 530 u16 token, 531 struct dpni_link_cfg *cfg); 532 533 /** 534 * struct dpni_link_state - Structure representing DPNI link state 535 * @rate: Rate 536 * @options: Mask of available options; use 'DPNI_LINK_OPT_<X>' values 537 * @up: Link state; '0' for down, '1' for up 538 */ 539 struct dpni_link_state { 540 u32 rate; 541 u64 options; 542 int up; 543 }; 544 545 int dpni_get_link_state(struct fsl_mc_io *mc_io, 546 u32 cmd_flags, 547 u16 token, 548 struct dpni_link_state *state); 549 550 int dpni_set_max_frame_length(struct fsl_mc_io *mc_io, 551 u32 cmd_flags, 552 u16 token, 553 u16 max_frame_length); 554 555 int dpni_get_max_frame_length(struct fsl_mc_io *mc_io, 556 u32 cmd_flags, 557 u16 token, 558 u16 *max_frame_length); 559 560 int dpni_set_multicast_promisc(struct fsl_mc_io *mc_io, 561 u32 cmd_flags, 562 u16 token, 563 int en); 564 565 int dpni_get_multicast_promisc(struct fsl_mc_io *mc_io, 566 u32 cmd_flags, 567 u16 token, 568 int *en); 569 570 int dpni_set_unicast_promisc(struct fsl_mc_io *mc_io, 571 u32 cmd_flags, 572 u16 token, 573 int en); 574 575 int dpni_get_unicast_promisc(struct fsl_mc_io *mc_io, 576 u32 cmd_flags, 577 u16 token, 578 int *en); 579 580 int dpni_set_primary_mac_addr(struct fsl_mc_io *mc_io, 581 u32 cmd_flags, 582 u16 token, 583 const u8 mac_addr[6]); 584 585 int dpni_get_primary_mac_addr(struct fsl_mc_io *mc_io, 586 u32 cmd_flags, 587 u16 token, 588 u8 mac_addr[6]); 589 590 int dpni_get_port_mac_addr(struct fsl_mc_io *mc_io, 591 u32 cm_flags, 592 u16 token, 593 u8 mac_addr[6]); 594 595 int dpni_add_mac_addr(struct fsl_mc_io *mc_io, 596 u32 cmd_flags, 597 u16 token, 598 const u8 mac_addr[6]); 599 600 int dpni_remove_mac_addr(struct fsl_mc_io *mc_io, 601 u32 cmd_flags, 602 u16 token, 603 const u8 mac_addr[6]); 604 605 int dpni_clear_mac_filters(struct fsl_mc_io *mc_io, 606 u32 cmd_flags, 607 u16 token, 608 int unicast, 609 int multicast); 610 611 /** 612 * enum dpni_dist_mode - DPNI distribution mode 613 * @DPNI_DIST_MODE_NONE: No distribution 614 * @DPNI_DIST_MODE_HASH: Use hash distribution; only relevant if 615 * the 'DPNI_OPT_DIST_HASH' option was set at DPNI creation 616 * @DPNI_DIST_MODE_FS: Use explicit flow steering; only relevant if 617 * the 'DPNI_OPT_DIST_FS' option was set at DPNI creation 618 */ 619 enum dpni_dist_mode { 620 DPNI_DIST_MODE_NONE = 0, 621 DPNI_DIST_MODE_HASH = 1, 622 DPNI_DIST_MODE_FS = 2 623 }; 624 625 /** 626 * enum dpni_fs_miss_action - DPNI Flow Steering miss action 627 * @DPNI_FS_MISS_DROP: In case of no-match, drop the frame 628 * @DPNI_FS_MISS_EXPLICIT_FLOWID: In case of no-match, use explicit flow-id 629 * @DPNI_FS_MISS_HASH: In case of no-match, distribute using hash 630 */ 631 enum dpni_fs_miss_action { 632 DPNI_FS_MISS_DROP = 0, 633 DPNI_FS_MISS_EXPLICIT_FLOWID = 1, 634 DPNI_FS_MISS_HASH = 2 635 }; 636 637 /** 638 * struct dpni_fs_tbl_cfg - Flow Steering table configuration 639 * @miss_action: Miss action selection 640 * @default_flow_id: Used when 'miss_action = DPNI_FS_MISS_EXPLICIT_FLOWID' 641 */ 642 struct dpni_fs_tbl_cfg { 643 enum dpni_fs_miss_action miss_action; 644 u16 default_flow_id; 645 }; 646 647 int dpni_prepare_key_cfg(const struct dpkg_profile_cfg *cfg, 648 u8 *key_cfg_buf); 649 650 /** 651 * struct dpni_rx_tc_dist_cfg - Rx traffic class distribution configuration 652 * @dist_size: Set the distribution size; 653 * supported values: 1,2,3,4,6,7,8,12,14,16,24,28,32,48,56,64,96, 654 * 112,128,192,224,256,384,448,512,768,896,1024 655 * @dist_mode: Distribution mode 656 * @key_cfg_iova: I/O virtual address of 256 bytes DMA-able memory filled with 657 * the extractions to be used for the distribution key by calling 658 * dpni_prepare_key_cfg() relevant only when 659 * 'dist_mode != DPNI_DIST_MODE_NONE', otherwise it can be '0' 660 * @fs_cfg: Flow Steering table configuration; only relevant if 661 * 'dist_mode = DPNI_DIST_MODE_FS' 662 */ 663 struct dpni_rx_tc_dist_cfg { 664 u16 dist_size; 665 enum dpni_dist_mode dist_mode; 666 u64 key_cfg_iova; 667 struct dpni_fs_tbl_cfg fs_cfg; 668 }; 669 670 int dpni_set_rx_tc_dist(struct fsl_mc_io *mc_io, 671 u32 cmd_flags, 672 u16 token, 673 u8 tc_id, 674 const struct dpni_rx_tc_dist_cfg *cfg); 675 676 /** 677 * When used for fs_miss_flow_id in function dpni_set_rx_dist, 678 * will signal to dpni to drop all unclassified frames 679 */ 680 #define DPNI_FS_MISS_DROP ((uint16_t)-1) 681 682 /** 683 * struct dpni_rx_dist_cfg - Rx distribution configuration 684 * @dist_size: distribution size 685 * @key_cfg_iova: I/O virtual address of 256 bytes DMA-able memory filled with 686 * the extractions to be used for the distribution key by calling 687 * dpni_prepare_key_cfg(); relevant only when enable!=0 otherwise 688 * it can be '0' 689 * @enable: enable/disable the distribution. 690 * @tc: TC id for which distribution is set 691 * @fs_miss_flow_id: when packet misses all rules from flow steering table and 692 * hash is disabled it will be put into this queue id; use 693 * DPNI_FS_MISS_DROP to drop frames. The value of this field is 694 * used only when flow steering distribution is enabled and hash 695 * distribution is disabled 696 */ 697 struct dpni_rx_dist_cfg { 698 u16 dist_size; 699 u64 key_cfg_iova; 700 u8 enable; 701 u8 tc; 702 u16 fs_miss_flow_id; 703 }; 704 705 int dpni_set_rx_fs_dist(struct fsl_mc_io *mc_io, 706 u32 cmd_flags, 707 u16 token, 708 const struct dpni_rx_dist_cfg *cfg); 709 710 int dpni_set_rx_hash_dist(struct fsl_mc_io *mc_io, 711 u32 cmd_flags, 712 u16 token, 713 const struct dpni_rx_dist_cfg *cfg); 714 715 /** 716 * enum dpni_dest - DPNI destination types 717 * @DPNI_DEST_NONE: Unassigned destination; The queue is set in parked mode and 718 * does not generate FQDAN notifications; user is expected to 719 * dequeue from the queue based on polling or other user-defined 720 * method 721 * @DPNI_DEST_DPIO: The queue is set in schedule mode and generates FQDAN 722 * notifications to the specified DPIO; user is expected to dequeue 723 * from the queue only after notification is received 724 * @DPNI_DEST_DPCON: The queue is set in schedule mode and does not generate 725 * FQDAN notifications, but is connected to the specified DPCON 726 * object; user is expected to dequeue from the DPCON channel 727 */ 728 enum dpni_dest { 729 DPNI_DEST_NONE = 0, 730 DPNI_DEST_DPIO = 1, 731 DPNI_DEST_DPCON = 2 732 }; 733 734 /** 735 * struct dpni_queue - Queue structure 736 * @destination - Destination structure 737 * @destination.id: ID of the destination, only relevant if DEST_TYPE is > 0. 738 * Identifies either a DPIO or a DPCON object. 739 * Not relevant for Tx queues. 740 * @destination.type: May be one of the following: 741 * 0 - No destination, queue can be manually 742 * queried, but will not push traffic or 743 * notifications to a DPIO; 744 * 1 - The destination is a DPIO. When traffic 745 * becomes available in the queue a FQDAN 746 * (FQ data available notification) will be 747 * generated to selected DPIO; 748 * 2 - The destination is a DPCON. The queue is 749 * associated with a DPCON object for the 750 * purpose of scheduling between multiple 751 * queues. The DPCON may be independently 752 * configured to generate notifications. 753 * Not relevant for Tx queues. 754 * @destination.hold_active: Hold active, maintains a queue scheduled for longer 755 * in a DPIO during dequeue to reduce spread of traffic. 756 * Only relevant if queues are 757 * not affined to a single DPIO. 758 * @user_context: User data, presented to the user along with any frames 759 * from this queue. Not relevant for Tx queues. 760 * @flc: FD FLow Context structure 761 * @flc.value: Default FLC value for traffic dequeued from 762 * this queue. Please check description of FD 763 * structure for more information. 764 * Note that FLC values set using dpni_add_fs_entry, 765 * if any, take precedence over values per queue. 766 * @flc.stash_control: Boolean, indicates whether the 6 lowest 767 * - significant bits are used for stash control. 768 * significant bits are used for stash control. If set, the 6 769 * least significant bits in value are interpreted as follows: 770 * - bits 0-1: indicates the number of 64 byte units of context 771 * that are stashed. FLC value is interpreted as a memory address 772 * in this case, excluding the 6 LS bits. 773 * - bits 2-3: indicates the number of 64 byte units of frame 774 * annotation to be stashed. Annotation is placed at FD[ADDR]. 775 * - bits 4-5: indicates the number of 64 byte units of frame 776 * data to be stashed. Frame data is placed at FD[ADDR] + 777 * FD[OFFSET]. 778 * For more details check the Frame Descriptor section in the 779 * hardware documentation. 780 */ 781 struct dpni_queue { 782 struct { 783 u16 id; 784 enum dpni_dest type; 785 char hold_active; 786 u8 priority; 787 } destination; 788 u64 user_context; 789 struct { 790 u64 value; 791 char stash_control; 792 } flc; 793 }; 794 795 /** 796 * struct dpni_queue_id - Queue identification, used for enqueue commands 797 * or queue control 798 * @fqid: FQID used for enqueueing to and/or configuration of this specific FQ 799 * @qdbin: Queueing bin, used to enqueue using QDID, DQBIN, QPRI. Only relevant 800 * for Tx queues. 801 */ 802 struct dpni_queue_id { 803 u32 fqid; 804 u16 qdbin; 805 }; 806 807 /** 808 * Set User Context 809 */ 810 #define DPNI_QUEUE_OPT_USER_CTX 0x00000001 811 #define DPNI_QUEUE_OPT_DEST 0x00000002 812 #define DPNI_QUEUE_OPT_FLC 0x00000004 813 #define DPNI_QUEUE_OPT_HOLD_ACTIVE 0x00000008 814 815 int dpni_set_queue(struct fsl_mc_io *mc_io, 816 u32 cmd_flags, 817 u16 token, 818 enum dpni_queue_type qtype, 819 u8 tc, 820 u8 index, 821 u8 options, 822 const struct dpni_queue *queue); 823 824 int dpni_get_queue(struct fsl_mc_io *mc_io, 825 u32 cmd_flags, 826 u16 token, 827 enum dpni_queue_type qtype, 828 u8 tc, 829 u8 index, 830 struct dpni_queue *queue, 831 struct dpni_queue_id *qid); 832 833 /** 834 * enum dpni_congestion_unit - DPNI congestion units 835 * @DPNI_CONGESTION_UNIT_BYTES: bytes units 836 * @DPNI_CONGESTION_UNIT_FRAMES: frames units 837 */ 838 enum dpni_congestion_unit { 839 DPNI_CONGESTION_UNIT_BYTES = 0, 840 DPNI_CONGESTION_UNIT_FRAMES 841 }; 842 843 /** 844 * enum dpni_congestion_point - Structure representing congestion point 845 * @DPNI_CP_QUEUE: Set taildrop per queue, identified by QUEUE_TYPE, TC and 846 * QUEUE_INDEX 847 * @DPNI_CP_GROUP: Set taildrop per queue group. Depending on options used to 848 * define the DPNI this can be either per TC (default) or per 849 * interface (DPNI_OPT_SHARED_CONGESTION set at DPNI create). 850 * QUEUE_INDEX is ignored if this type is used. 851 */ 852 enum dpni_congestion_point { 853 DPNI_CP_QUEUE, 854 DPNI_CP_GROUP, 855 }; 856 857 /** 858 * struct dpni_taildrop - Structure representing the taildrop 859 * @enable: Indicates whether the taildrop is active or not. 860 * @units: Indicates the unit of THRESHOLD. Queue taildrop only supports 861 * byte units, this field is ignored and assumed = 0 if 862 * CONGESTION_POINT is 0. 863 * @threshold: Threshold value, in units identified by UNITS field. Value 0 864 * cannot be used as a valid taildrop threshold, THRESHOLD must 865 * be > 0 if the taildrop is enabled. 866 */ 867 struct dpni_taildrop { 868 char enable; 869 enum dpni_congestion_unit units; 870 u32 threshold; 871 }; 872 873 int dpni_set_taildrop(struct fsl_mc_io *mc_io, 874 u32 cmd_flags, 875 u16 token, 876 enum dpni_congestion_point cg_point, 877 enum dpni_queue_type q_type, 878 u8 tc, 879 u8 q_index, 880 struct dpni_taildrop *taildrop); 881 882 int dpni_get_taildrop(struct fsl_mc_io *mc_io, 883 u32 cmd_flags, 884 u16 token, 885 enum dpni_congestion_point cg_point, 886 enum dpni_queue_type q_type, 887 u8 tc, 888 u8 q_index, 889 struct dpni_taildrop *taildrop); 890 891 /** 892 * struct dpni_rule_cfg - Rule configuration for table lookup 893 * @key_iova: I/O virtual address of the key (must be in DMA-able memory) 894 * @mask_iova: I/O virtual address of the mask (must be in DMA-able memory) 895 * @key_size: key and mask size (in bytes) 896 */ 897 struct dpni_rule_cfg { 898 u64 key_iova; 899 u64 mask_iova; 900 u8 key_size; 901 }; 902 903 /** 904 * Discard matching traffic. If set, this takes precedence over any other 905 * configuration and matching traffic is always discarded. 906 */ 907 #define DPNI_FS_OPT_DISCARD 0x1 908 909 /** 910 * Set FLC value. If set, flc member of struct dpni_fs_action_cfg is used to 911 * override the FLC value set per queue. 912 * For more details check the Frame Descriptor section in the hardware 913 * documentation. 914 */ 915 #define DPNI_FS_OPT_SET_FLC 0x2 916 917 /** 918 * Indicates whether the 6 lowest significant bits of FLC are used for stash 919 * control. If set, the 6 least significant bits in value are interpreted as 920 * follows: 921 * - bits 0-1: indicates the number of 64 byte units of context that are 922 * stashed. FLC value is interpreted as a memory address in this case, 923 * excluding the 6 LS bits. 924 * - bits 2-3: indicates the number of 64 byte units of frame annotation 925 * to be stashed. Annotation is placed at FD[ADDR]. 926 * - bits 4-5: indicates the number of 64 byte units of frame data to be 927 * stashed. Frame data is placed at FD[ADDR] + FD[OFFSET]. 928 * This flag is ignored if DPNI_FS_OPT_SET_FLC is not specified. 929 */ 930 #define DPNI_FS_OPT_SET_STASH_CONTROL 0x4 931 932 /** 933 * struct dpni_fs_action_cfg - Action configuration for table look-up 934 * @flc: FLC value for traffic matching this rule. Please check the 935 * Frame Descriptor section in the hardware documentation for 936 * more information. 937 * @flow_id: Identifies the Rx queue used for matching traffic. Supported 938 * values are in range 0 to num_queue-1. 939 * @options: Any combination of DPNI_FS_OPT_ values. 940 */ 941 struct dpni_fs_action_cfg { 942 u64 flc; 943 u16 flow_id; 944 u16 options; 945 }; 946 947 int dpni_add_fs_entry(struct fsl_mc_io *mc_io, 948 u32 cmd_flags, 949 u16 token, 950 u8 tc_id, 951 u16 index, 952 const struct dpni_rule_cfg *cfg, 953 const struct dpni_fs_action_cfg *action); 954 955 int dpni_remove_fs_entry(struct fsl_mc_io *mc_io, 956 u32 cmd_flags, 957 u16 token, 958 u8 tc_id, 959 const struct dpni_rule_cfg *cfg); 960 961 int dpni_get_api_version(struct fsl_mc_io *mc_io, 962 u32 cmd_flags, 963 u16 *major_ver, 964 u16 *minor_ver); 965 966 #endif /* __FSL_DPNI_H */ 967