1 /* 2 * Copyright (c) 2016-2017 The Linux Foundation. All rights reserved. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for 5 * any purpose with or without fee is hereby granted, provided that the 6 * above copyright notice and this permission notice appear in all 7 * copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 10 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED 11 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE 12 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 13 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 14 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 15 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 16 * PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #ifndef _WBM_RELEASE_RING_H_ 20 #define _WBM_RELEASE_RING_H_ 21 #if !defined(__ASSEMBLER__) 22 #endif 23 24 #include "buffer_addr_info.h" 25 #include "tx_rate_stats_info.h" 26 27 // ################ START SUMMARY ################# 28 // 29 // Dword Fields 30 // 0-1 struct buffer_addr_info released_buff_or_desc_addr_info; 31 // 2 release_source_module[2:0], bm_action[5:3], buffer_or_desc_type[8:6], first_msdu_index[12:9], tqm_release_reason[15:13], rxdma_push_reason[17:16], rxdma_error_code[22:18], reo_push_reason[24:23], reo_error_code[29:25], wbm_internal_error[30], reserved_2[31] 32 // 3 tqm_status_number[23:0], transmit_count[30:24], reserved_3a[31] 33 // 4 ack_frame_rssi[7:0], sw_release_details_valid[8], first_msdu[9], last_msdu[10], msdu_part_of_amsdu[11], fw_tx_notify_frame[12], buffer_timestamp[31:13] 34 // 5-6 struct tx_rate_stats_info tx_rate_stats; 35 // 7 sw_peer_id[15:0], tid[19:16], ring_id[27:20], looping_count[31:28] 36 // 37 // ################ END SUMMARY ################# 38 39 #define NUM_OF_DWORDS_WBM_RELEASE_RING 8 40 41 struct wbm_release_ring { 42 struct buffer_addr_info released_buff_or_desc_addr_info; 43 uint32_t release_source_module : 3, //[2:0] 44 bm_action : 3, //[5:3] 45 buffer_or_desc_type : 3, //[8:6] 46 first_msdu_index : 4, //[12:9] 47 tqm_release_reason : 3, //[15:13] 48 rxdma_push_reason : 2, //[17:16] 49 rxdma_error_code : 5, //[22:18] 50 reo_push_reason : 2, //[24:23] 51 reo_error_code : 5, //[29:25] 52 wbm_internal_error : 1, //[30] 53 reserved_2 : 1; //[31] 54 uint32_t tqm_status_number : 24, //[23:0] 55 transmit_count : 7, //[30:24] 56 reserved_3a : 1; //[31] 57 uint32_t ack_frame_rssi : 8, //[7:0] 58 sw_release_details_valid : 1, //[8] 59 first_msdu : 1, //[9] 60 last_msdu : 1, //[10] 61 msdu_part_of_amsdu : 1, //[11] 62 fw_tx_notify_frame : 1, //[12] 63 buffer_timestamp : 19; //[31:13] 64 struct tx_rate_stats_info tx_rate_stats; 65 uint32_t sw_peer_id : 16, //[15:0] 66 tid : 4, //[19:16] 67 ring_id : 8, //[27:20] 68 looping_count : 4; //[31:28] 69 }; 70 71 /* 72 73 struct buffer_addr_info released_buff_or_desc_addr_info 74 75 Consumer: WBM/SW/FW 76 77 Producer: SW/TQM/RXDMA/REO/SWITCH 78 79 80 81 Details of the physical address of the buffer or link 82 descriptor that is being released. Note that within this 83 descriptor, WBM will look at the 'owner' of the released 84 buffer/descriptor and forward it to SW/FW is WBM is not the 85 owner. 86 87 release_source_module 88 89 Indicates which module initiated the release of this 90 buffer or descriptor 91 92 93 94 <enum 0 release_source_TQM> TQM released this buffer or 95 descriptor 96 97 <enum 1 release_source_RXDMA> RXDMA released this buffer 98 or descriptor 99 100 <enum 2 release_source_REO> REO released this buffer or 101 descriptor 102 103 <enum 3 release_source_FW> FW released this buffer or 104 descriptor 105 106 <enum 4 release_source_SW> SW released this buffer or 107 descriptor 108 109 <legal 0-4> 110 111 bm_action 112 113 Consumer: WBM/SW/FW 114 115 Producer: SW/TQM/RXDMA/REO/SWITCH 116 117 118 119 Field only valid when the field return_buffer_manager in 120 the Released_buff_or_desc_addr_info indicates: 121 122 WBM_IDLE_BUF_LIST or 123 124 WBM_IDLE_DESC_LIST 125 126 127 128 An MSDU extension descriptor shall never be marked as 129 130 131 132 <enum 0 Put_in_idle_list> Put the buffer or descriptor 133 back in the idle list. In case of MSDU or MDPU link 134 descriptor, BM does not need to check to release any 135 individual MSDU buffers 136 137 138 139 <enum 1 release_msdu_list > This BM action can only be 140 used in combination with buffer_or_desc_type being 141 msdu_link_descriptor. Field first_msdu_index points out 142 which MSDU pointer in the MSDU link descriptor is the first 143 of an MPDU that is released. 144 145 BM shall release all the MSDU buffers linked to this 146 first MSDU buffer pointer. All related MSDU buffer pointer 147 entries shall be set to value 0, which represents the 'NULL 148 pointer. When all MSDU buffer pointers in the MSDU link 149 descriptor are 'NULL', the MSDU link descriptor itself shall 150 also be released. 151 152 153 154 <enum 2 Put_in_idle_list_expanded> CURRENTLY NOT 155 IMPLEMENTED.... 156 157 Put the buffer or descriptor back in the idle list. Only 158 valid in combination with buffer_or_desc_type indicating 159 MDPU_link_descriptor. 160 161 BM shall release the MPDU link descriptor as well as all 162 MSDUs that are linked to the MPDUs in this descriptor. 163 164 165 166 <legal 0-2> 167 168 buffer_or_desc_type 169 170 Consumer: WBM/SW/FW 171 172 Producer: SW/TQM/RXDMA/REO/SWITCH 173 174 175 176 Field only valid when WBM is marked as the 177 return_buffer_manager in the Released_Buffer_address_info 178 179 180 181 Indicates that type of buffer or descriptor is being 182 released 183 184 185 186 <enum 0 MSDU_rel_buffer> The address points to an MSDU 187 buffer 188 189 <enum 1 msdu_link_descriptor> The address points to an 190 TX MSDU link descriptor 191 192 <enum 2 mpdu_link_descriptor> The address points to an 193 MPDU link descriptor 194 195 <enum 3 msdu_ext_descriptor > The address points to an 196 MSDU extension descriptor. 197 198 In case BM finds this one in a release ring, it passes 199 it on to FW... 200 201 <enum 4 queue_ext_descriptor> The address points to an 202 TQM queue extension descriptor. WBM should treat this is the 203 same way as a link descriptor. That is, put the 128 byte 204 buffer back in the link buffer idle list. 205 206 207 208 <legal 0-4> 209 210 first_msdu_index 211 212 Consumer: WBM/SW/FW 213 214 Producer: SW/TQM/RXDMA/REO/SWITCH 215 216 217 218 Field only valid for the bm_action release_msdu_list. 219 220 221 222 The index of the first MSDU in an MSDU link descriptor 223 all belonging to the same MPDU. 224 225 226 227 <legal 0-6> 228 229 tqm_release_reason 230 231 Consumer: WBM/SW/FW 232 233 Producer: TQM 234 235 236 237 Field only valid when Release_source_module is set to 238 release_source_TQM 239 240 241 242 (rr = Release Reason) 243 244 <enum 0 tqm_rr_frame_acked> frame is removed because an 245 ACK of BA for it was received 246 247 <enum 1 tqm_rr_rem_cmd_rem> frame is removed because a 248 remove command of type Remove_mpdus initiated by SW 249 250 <enum 2 tqm_rr_rem_cmd_tx> frame is removed because a 251 remove command of type Remove_transmitted_mpdus initiated by 252 SW 253 254 <enum 3 tqm_rr_rem_cmd_notx> frame is removed because a 255 remove command of type Remove_untransmitted_mpdus initiated 256 by SW 257 258 <enum 4 tqm_rr_rem_cmd_aged> frame is removed because a 259 remove command of type Remove_aged_mpdus or 260 Remove_aged_msdus initiated by SW 261 262 <enum 5 tqm_fw_reason1> frame is removed because a 263 remove command where fw indicated that remove reason is 264 fw_reason1 265 266 <enum 6 tqm_fw_reason2> frame is removed because a 267 remove command where fw indicated that remove reason is 268 fw_reason1 269 270 <enum 7 tqm_fw_reason3> frame is removed because a 271 remove command where fw indicated that remove reason is 272 fw_reason1 273 274 275 276 <legal 0-7> 277 278 rxdma_push_reason 279 280 Field only valid when Release_source_module is set to 281 release_source_RXDMA 282 283 284 285 Indicates why rxdma pushed the frame to this ring 286 287 288 289 <enum 0 rxdma_error_detected> RXDMA detected an error an 290 pushed this frame to this queue 291 292 <enum 1 rxdma_routing_instruction> RXDMA pushed the 293 frame to this queue per received routing instructions. No 294 error within RXDMA was detected 295 296 <enum 2 rxdma_rx_flush> RXDMA received an RX_FLUSH. As a 297 result the MSDU link descriptor might not have the 298 last_msdu_in_mpdu_flag set, but instead WBM might just see a 299 NULL pointer in the MSDU link descriptor. This is to be 300 considered a normal condition for this scenario. 301 302 303 304 <legal 0 - 2> 305 306 rxdma_error_code 307 308 Field only valid when 'rxdma_push_reason' set to 309 'rxdma_error_detected'. 310 311 312 313 <enum 0 rxdma_overflow_err>MPDU frame is not complete 314 due to a FIFO overflow error in RXPCU. 315 316 <enum 1 rxdma_mpdu_length_err>MPDU frame is not complete 317 due to receiving incomplete MPDU from the PHY 318 319 320 <enum 3 rxdma_decrypt_err>CRYPTO reported a decryption 321 error or CRYPTO received an encrypted frame, but did not get 322 a valid corresponding key id in the peer entry. 323 324 <enum 4 rxdma_tkip_mic_err>CRYPTO reported a TKIP MIC 325 error 326 327 <enum 5 rxdma_unecrypted_err>CRYPTO reported an 328 unencrypted frame error when encrypted was expected 329 330 <enum 6 rxdma_msdu_len_err>RX OLE reported an MSDU 331 length error 332 333 <enum 7 rxdma_msdu_limit_err>RX OLE reported that max 334 number of MSDUs allowed in an MPDU got exceeded 335 336 <enum 8 rxdma_wifi_parse_err>RX OLE reported a parsing 337 error 338 339 <enum 9 rxdma_amsdu_parse_err>RX OLE reported an A-MSDU 340 parsing error 341 342 <enum 10 rxdma_sa_timeout_err>RX OLE reported a timeout 343 during SA search 344 345 <enum 11 rxdma_da_timeout_err>RX OLE reported a timeout 346 during DA search 347 348 <enum 12 rxdma_flow_timeout_err>RX OLE reported a 349 timeout during flow search 350 351 <enum 13 Rxdma_flush_request>RXDMA received a flush 352 request 353 354 reo_push_reason 355 356 Field only valid when Release_source_module is set to 357 release_source_REO 358 359 360 361 Indicates why REO pushed the frame to this release ring 362 363 364 365 <enum 0 reo_error_detected> Reo detected an error an 366 pushed this frame to this queue 367 368 <enum 1 reo_routing_instruction> Reo pushed the frame to 369 this queue per received routing instructions. No error 370 within REO was detected 371 372 373 374 <legal 0 - 1> 375 376 reo_error_code 377 378 Field only valid when 'Reo_push_reason' set to 379 'reo_error_detected'. 380 381 382 383 <enum 0 reo_queue_desc_addr_zero> Reo queue descriptor 384 provided in the REO_ENTRANCE ring is set to 0 385 386 <enum 1 reo_queue_desc_not_valid> Reo queue descriptor 387 valid bit is NOT set 388 389 <enum 2 ampdu_in_non_ba> AMPDU frame received without BA 390 session having been setup. 391 392 <enum 3 non_ba_duplicate> Non-BA session, SN equal to 393 SSN, Retry bit set: duplicate frame 394 395 <enum 4 ba_duplicate> BA session, duplicate frame 396 397 <enum 5 regular_frame_2k_jump> A normal (management/data 398 frame) received with 2K jump in SN 399 400 <enum 6 bar_frame_2k_jump> A bar received with 2K jump 401 in SSN 402 403 <enum 7 regular_frame_OOR> A normal (management/data 404 frame) received with SN falling within the OOR window 405 406 <enum 8 bar_frame_OOR> A bar received with SSN falling 407 within the OOR window 408 409 <enum 9 bar_frame_no_ba_session> A bar received without 410 a BA session 411 412 <enum 10 bar_frame_sn_equals_ssn> A bar received with 413 SSN equal to SN 414 415 <enum 11 pn_check_failed> PN Check Failed packet. 416 417 <enum 12 2k_error_handling_flag_set> Frame is forwarded 418 as a result of the 'Seq_2k_error_detected_flag' been set in 419 the REO Queue descriptor 420 421 <enum 13 pn_error_handling_flag_set> Frame is forwarded 422 as a result of the 'pn_error_detected_flag' been set in the 423 REO Queue descriptor 424 425 <enum 14 queue_descriptor_blocked_set> Frame is 426 forwarded as a result of the queue descriptor(address) being 427 blocked as SW/FW seems to be currently in the process of 428 making updates to this descriptor... 429 430 431 432 <legal 0-14> 433 434 wbm_internal_error 435 436 Can only be set by WBM. 437 438 439 440 Is set when WBM got a buffer pointer but the action was 441 to push it to the idle link descriptor ring or do link 442 related activity 443 444 OR 445 446 Is set when WBM got a link buffer pointer but the action 447 was to push it to the buffer descriptor ring 448 449 450 451 <legal all> 452 453 reserved_2 454 455 <legal 0> 456 457 tqm_status_number 458 459 Field only valid when Release_source_module is set to 460 release_source_TQM 461 462 463 464 The value in this field is equal to value of the 465 'TQM_CMD_Number' field the TQM command or the 466 'TQM_add_cmd_Number' field from the TQM entrance ring 467 descriptor 468 469 470 471 This field helps to correlate the statuses with the TQM 472 commands. 473 474 475 476 NOTE that SW could program this number to be equal to 477 the PPDU_ID number in case direct correlation with the PPDU 478 ID is desired 479 480 481 482 <legal all> 483 484 transmit_count 485 486 Field only valid when Release_source_module is set to 487 release_source_TQM 488 489 490 491 The number of times this frame has been transmitted 492 493 reserved_3a 494 495 <legal 0> 496 497 ack_frame_rssi 498 499 This field is only valid when the source is TQM. 500 501 502 503 If this frame is removed as the result of the reception 504 of an ACK or BA, this field indicates the RSSI of the 505 received ACK or BA frame. 506 507 508 509 When the frame is removed as result of a direct remove 510 command from the SW, this field is set to 0x0 (which is 511 never a valid value when real RSSI is available) 512 513 514 515 <legal all> 516 517 sw_release_details_valid 518 519 Consumer: SW 520 521 Producer: WBM 522 523 524 525 When set, some WBM specific release info for SW is 526 valid. 527 528 This is set when WMB got a 'release_msdu_list' command 529 from TQM and the return buffer manager is not WMB. WBM will 530 then de-aggregate all the MSDUs and pass them one at a time 531 on to the 'buffer owner' 532 533 534 535 <legal all> 536 537 first_msdu 538 539 Field only valid when SW_release_details_valid is set. 540 541 542 543 Consumer: SW 544 545 Producer: WBM 546 547 548 549 When set, this MSDU is the first MSDU pointed to in the 550 'release_msdu_list' command. 551 552 553 554 <legal all> 555 556 last_msdu 557 558 Field only valid when SW_release_details_valid is set. 559 560 561 562 Consumer: SW 563 564 Producer: WBM 565 566 567 568 When set, this MSDU is the last MSDU pointed to in the 569 'release_msdu_list' command. 570 571 572 573 <legal all> 574 575 msdu_part_of_amsdu 576 577 Field only valid when SW_release_details_valid is set. 578 579 580 581 Consumer: SW 582 583 Producer: WBM 584 585 586 587 When set, this MSDU was part of an A-MSDU in MPDU 588 589 <legal all> 590 591 fw_tx_notify_frame 592 593 Field only valid when SW_release_details_valid is set. 594 595 596 597 Consumer: SW 598 599 Producer: WBM 600 601 602 603 This is the FW_tx_notify_frame field from the 604 605 <legal all> 606 607 buffer_timestamp 608 609 Field only valid when SW_release_details_valid is set. 610 611 612 613 Consumer: SW 614 615 Producer: WBM 616 617 618 619 This is the Buffer_timestamp field from the 620 621 <legal all> 622 623 struct tx_rate_stats_info tx_rate_stats 624 625 Consumer: TQM 626 627 Producer: SW/SCH(from TXPCU, PDG) 628 629 630 631 Details for command execution tracking purposes. 632 633 sw_peer_id 634 635 Field only valid when Release_source_module is set to 636 release_source_TQM 637 638 639 640 1) Release of msdu buffer due to drop_frame = 1. Flow is 641 not fetched and hence sw_peer_id and tid = 0 642 643 buffer_or_desc_type = e_num 0 644 MSDU_rel_buffertqm_release_reason = e_num 1 645 tqm_rr_rem_cmd_rem 646 647 648 649 650 651 2) Release of msdu buffer due to Flow is not fetched and 652 hence sw_peer_id and tid = 0 653 654 buffer_or_desc_type = e_num 0 655 MSDU_rel_buffertqm_release_reason = e_num 1 656 tqm_rr_rem_cmd_rem 657 658 659 660 661 662 3) Release of msdu link due to remove_mpdu or acked_mpdu 663 command. 664 665 buffer_or_desc_type = e_num1 666 msdu_link_descriptortqm_release_reason can be:e_num 1 667 tqm_rr_rem_cmd_reme_num 2 tqm_rr_rem_cmd_tx 668 669 e_num 3 tqm_rr_rem_cmd_notxe_num 4 tqm_rr_rem_cmd_aged 670 671 672 673 Sw_peer_id from the TX_MSDU_FLOW descriptor or 674 TX_MPDU_QUEUE descriptor 675 676 <legal all> 677 678 tid 679 680 Field only valid when Release_source_module is set to 681 release_source_TQM 682 683 684 685 1) Release of msdu buffer due to drop_frame = 1. Flow is 686 not fetched and hence sw_peer_id and tid = 0 687 688 buffer_or_desc_type = e_num 0 689 MSDU_rel_buffertqm_release_reason = e_num 1 690 tqm_rr_rem_cmd_rem 691 692 693 694 695 696 2) Release of msdu buffer due to Flow is not fetched and 697 hence sw_peer_id and tid = 0 698 699 buffer_or_desc_type = e_num 0 700 MSDU_rel_buffertqm_release_reason = e_num 1 701 tqm_rr_rem_cmd_rem 702 703 704 705 706 707 3) Release of msdu link due to remove_mpdu or acked_mpdu 708 command. 709 710 buffer_or_desc_type = e_num1 711 msdu_link_descriptortqm_release_reason can be:e_num 1 712 tqm_rr_rem_cmd_reme_num 2 tqm_rr_rem_cmd_tx 713 714 e_num 3 tqm_rr_rem_cmd_notxe_num 4 tqm_rr_rem_cmd_aged 715 716 717 718 719 720 This field represents the TID from the TX_MSDU_FLOW 721 descriptor or TX_MPDU_QUEUE descriptor 722 723 724 725 <legal all> 726 727 ring_id 728 729 Consumer: TQM/REO/RXDMA/SW 730 731 Producer: SRNG (of RXDMA) 732 733 734 735 For debugging. 736 737 This field is filled in by the SRNG module. 738 739 It help to identify the ring that is being looked <legal 740 all> 741 742 looping_count 743 744 Consumer: WBM/SW/FW 745 746 Producer: SW/TQM/RXDMA/REO/SWITCH 747 748 749 750 A count value that indicates the number of times the 751 producer of entries into the Buffer Manager Ring has looped 752 around the ring. 753 754 At initialization time, this value is set to 0. On the 755 first loop, this value is set to 1. After the max value is 756 reached allowed by the number of bits for this field, the 757 count value continues with 0 again. 758 759 760 761 In case SW is the consumer of the ring entries, it can 762 use this field to figure out up to where the producer of 763 entries has created new entries. This eliminates the need to 764 check where the head pointer' of the ring is located once 765 the SW starts processing an interrupt indicating that new 766 entries have been put into this ring... 767 768 769 770 Also note that SW if it wants only needs to look at the 771 LSB bit of this count value. 772 773 <legal all> 774 */ 775 776 #define WBM_RELEASE_RING_0_BUFFER_ADDR_INFO_RELEASED_BUFF_OR_DESC_ADDR_INFO_OFFSET 0x00000000 777 #define WBM_RELEASE_RING_0_BUFFER_ADDR_INFO_RELEASED_BUFF_OR_DESC_ADDR_INFO_LSB 28 778 #define WBM_RELEASE_RING_0_BUFFER_ADDR_INFO_RELEASED_BUFF_OR_DESC_ADDR_INFO_MASK 0xffffffff 779 #define WBM_RELEASE_RING_1_BUFFER_ADDR_INFO_RELEASED_BUFF_OR_DESC_ADDR_INFO_OFFSET 0x00000004 780 #define WBM_RELEASE_RING_1_BUFFER_ADDR_INFO_RELEASED_BUFF_OR_DESC_ADDR_INFO_LSB 28 781 #define WBM_RELEASE_RING_1_BUFFER_ADDR_INFO_RELEASED_BUFF_OR_DESC_ADDR_INFO_MASK 0xffffffff 782 783 /* Description WBM_RELEASE_RING_2_RELEASE_SOURCE_MODULE 784 785 Indicates which module initiated the release of this 786 buffer or descriptor 787 788 789 790 <enum 0 release_source_TQM> TQM released this buffer or 791 descriptor 792 793 <enum 1 release_source_RXDMA> RXDMA released this buffer 794 or descriptor 795 796 <enum 2 release_source_REO> REO released this buffer or 797 descriptor 798 799 <enum 3 release_source_FW> FW released this buffer or 800 descriptor 801 802 <enum 4 release_source_SW> SW released this buffer or 803 descriptor 804 805 <legal 0-4> 806 */ 807 #define WBM_RELEASE_RING_2_RELEASE_SOURCE_MODULE_OFFSET 0x00000008 808 #define WBM_RELEASE_RING_2_RELEASE_SOURCE_MODULE_LSB 0 809 #define WBM_RELEASE_RING_2_RELEASE_SOURCE_MODULE_MASK 0x00000007 810 811 /* Description WBM_RELEASE_RING_2_BM_ACTION 812 813 Consumer: WBM/SW/FW 814 815 Producer: SW/TQM/RXDMA/REO/SWITCH 816 817 818 819 Field only valid when the field return_buffer_manager in 820 the Released_buff_or_desc_addr_info indicates: 821 822 WBM_IDLE_BUF_LIST or 823 824 WBM_IDLE_DESC_LIST 825 826 827 828 An MSDU extension descriptor shall never be marked as 829 830 831 832 <enum 0 Put_in_idle_list> Put the buffer or descriptor 833 back in the idle list. In case of MSDU or MDPU link 834 descriptor, BM does not need to check to release any 835 individual MSDU buffers 836 837 838 839 <enum 1 release_msdu_list > This BM action can only be 840 used in combination with buffer_or_desc_type being 841 msdu_link_descriptor. Field first_msdu_index points out 842 which MSDU pointer in the MSDU link descriptor is the first 843 of an MPDU that is released. 844 845 BM shall release all the MSDU buffers linked to this 846 first MSDU buffer pointer. All related MSDU buffer pointer 847 entries shall be set to value 0, which represents the 'NULL 848 pointer. When all MSDU buffer pointers in the MSDU link 849 descriptor are 'NULL', the MSDU link descriptor itself shall 850 also be released. 851 852 853 854 <enum 2 Put_in_idle_list_expanded> CURRENTLY NOT 855 IMPLEMENTED.... 856 857 Put the buffer or descriptor back in the idle list. Only 858 valid in combination with buffer_or_desc_type indicating 859 MDPU_link_descriptor. 860 861 BM shall release the MPDU link descriptor as well as all 862 MSDUs that are linked to the MPDUs in this descriptor. 863 864 865 866 <legal 0-2> 867 */ 868 #define WBM_RELEASE_RING_2_BM_ACTION_OFFSET 0x00000008 869 #define WBM_RELEASE_RING_2_BM_ACTION_LSB 3 870 #define WBM_RELEASE_RING_2_BM_ACTION_MASK 0x00000038 871 872 /* Description WBM_RELEASE_RING_2_BUFFER_OR_DESC_TYPE 873 874 Consumer: WBM/SW/FW 875 876 Producer: SW/TQM/RXDMA/REO/SWITCH 877 878 879 880 Field only valid when WBM is marked as the 881 return_buffer_manager in the Released_Buffer_address_info 882 883 884 885 Indicates that type of buffer or descriptor is being 886 released 887 888 889 890 <enum 0 MSDU_rel_buffer> The address points to an MSDU 891 buffer 892 893 <enum 1 msdu_link_descriptor> The address points to an 894 TX MSDU link descriptor 895 896 <enum 2 mpdu_link_descriptor> The address points to an 897 MPDU link descriptor 898 899 <enum 3 msdu_ext_descriptor > The address points to an 900 MSDU extension descriptor. 901 902 In case BM finds this one in a release ring, it passes 903 it on to FW... 904 905 <enum 4 queue_ext_descriptor> The address points to an 906 TQM queue extension descriptor. WBM should treat this is the 907 same way as a link descriptor. That is, put the 128 byte 908 buffer back in the link buffer idle list. 909 910 911 912 <legal 0-4> 913 */ 914 #define WBM_RELEASE_RING_2_BUFFER_OR_DESC_TYPE_OFFSET 0x00000008 915 #define WBM_RELEASE_RING_2_BUFFER_OR_DESC_TYPE_LSB 6 916 #define WBM_RELEASE_RING_2_BUFFER_OR_DESC_TYPE_MASK 0x000001c0 917 918 /* Description WBM_RELEASE_RING_2_FIRST_MSDU_INDEX 919 920 Consumer: WBM/SW/FW 921 922 Producer: SW/TQM/RXDMA/REO/SWITCH 923 924 925 926 Field only valid for the bm_action release_msdu_list. 927 928 929 930 The index of the first MSDU in an MSDU link descriptor 931 all belonging to the same MPDU. 932 933 934 935 <legal 0-6> 936 */ 937 #define WBM_RELEASE_RING_2_FIRST_MSDU_INDEX_OFFSET 0x00000008 938 #define WBM_RELEASE_RING_2_FIRST_MSDU_INDEX_LSB 9 939 #define WBM_RELEASE_RING_2_FIRST_MSDU_INDEX_MASK 0x00001e00 940 941 /* Description WBM_RELEASE_RING_2_TQM_RELEASE_REASON 942 943 Consumer: WBM/SW/FW 944 945 Producer: TQM 946 947 948 949 Field only valid when Release_source_module is set to 950 release_source_TQM 951 952 953 954 (rr = Release Reason) 955 956 <enum 0 tqm_rr_frame_acked> frame is removed because an 957 ACK of BA for it was received 958 959 <enum 1 tqm_rr_rem_cmd_rem> frame is removed because a 960 remove command of type Remove_mpdus initiated by SW 961 962 <enum 2 tqm_rr_rem_cmd_tx> frame is removed because a 963 remove command of type Remove_transmitted_mpdus initiated by 964 SW 965 966 <enum 3 tqm_rr_rem_cmd_notx> frame is removed because a 967 remove command of type Remove_untransmitted_mpdus initiated 968 by SW 969 970 <enum 4 tqm_rr_rem_cmd_aged> frame is removed because a 971 remove command of type Remove_aged_mpdus or 972 Remove_aged_msdus initiated by SW 973 974 <enum 5 tqm_fw_reason1> frame is removed because a 975 remove command where fw indicated that remove reason is 976 fw_reason1 977 978 <enum 6 tqm_fw_reason2> frame is removed because a 979 remove command where fw indicated that remove reason is 980 fw_reason1 981 982 <enum 7 tqm_fw_reason3> frame is removed because a 983 remove command where fw indicated that remove reason is 984 fw_reason1 985 986 987 988 <legal 0-7> 989 */ 990 #define WBM_RELEASE_RING_2_TQM_RELEASE_REASON_OFFSET 0x00000008 991 #define WBM_RELEASE_RING_2_TQM_RELEASE_REASON_LSB 13 992 #define WBM_RELEASE_RING_2_TQM_RELEASE_REASON_MASK 0x0000e000 993 994 /* Description WBM_RELEASE_RING_2_RXDMA_PUSH_REASON 995 996 Field only valid when Release_source_module is set to 997 release_source_RXDMA 998 999 1000 1001 Indicates why rxdma pushed the frame to this ring 1002 1003 1004 1005 <enum 0 rxdma_error_detected> RXDMA detected an error an 1006 pushed this frame to this queue 1007 1008 <enum 1 rxdma_routing_instruction> RXDMA pushed the 1009 frame to this queue per received routing instructions. No 1010 error within RXDMA was detected 1011 1012 <enum 2 rxdma_rx_flush> RXDMA received an RX_FLUSH. As a 1013 result the MSDU link descriptor might not have the 1014 last_msdu_in_mpdu_flag set, but instead WBM might just see a 1015 NULL pointer in the MSDU link descriptor. This is to be 1016 considered a normal condition for this scenario. 1017 1018 1019 1020 <legal 0 - 2> 1021 */ 1022 #define WBM_RELEASE_RING_2_RXDMA_PUSH_REASON_OFFSET 0x00000008 1023 #define WBM_RELEASE_RING_2_RXDMA_PUSH_REASON_LSB 16 1024 #define WBM_RELEASE_RING_2_RXDMA_PUSH_REASON_MASK 0x00030000 1025 1026 /* Description WBM_RELEASE_RING_2_RXDMA_ERROR_CODE 1027 1028 Field only valid when 'rxdma_push_reason' set to 1029 'rxdma_error_detected'. 1030 1031 1032 1033 <enum 0 rxdma_overflow_err>MPDU frame is not complete 1034 due to a FIFO overflow error in RXPCU. 1035 1036 <enum 1 rxdma_mpdu_length_err>MPDU frame is not complete 1037 due to receiving incomplete MPDU from the PHY 1038 1039 1040 <enum 3 rxdma_decrypt_err>CRYPTO reported a decryption 1041 error or CRYPTO received an encrypted frame, but did not get 1042 a valid corresponding key id in the peer entry. 1043 1044 <enum 4 rxdma_tkip_mic_err>CRYPTO reported a TKIP MIC 1045 error 1046 1047 <enum 5 rxdma_unecrypted_err>CRYPTO reported an 1048 unencrypted frame error when encrypted was expected 1049 1050 <enum 6 rxdma_msdu_len_err>RX OLE reported an MSDU 1051 length error 1052 1053 <enum 7 rxdma_msdu_limit_err>RX OLE reported that max 1054 number of MSDUs allowed in an MPDU got exceeded 1055 1056 <enum 8 rxdma_wifi_parse_err>RX OLE reported a parsing 1057 error 1058 1059 <enum 9 rxdma_amsdu_parse_err>RX OLE reported an A-MSDU 1060 parsing error 1061 1062 <enum 10 rxdma_sa_timeout_err>RX OLE reported a timeout 1063 during SA search 1064 1065 <enum 11 rxdma_da_timeout_err>RX OLE reported a timeout 1066 during DA search 1067 1068 <enum 12 rxdma_flow_timeout_err>RX OLE reported a 1069 timeout during flow search 1070 1071 <enum 13 Rxdma_flush_request>RXDMA received a flush 1072 request 1073 */ 1074 #define WBM_RELEASE_RING_2_RXDMA_ERROR_CODE_OFFSET 0x00000008 1075 #define WBM_RELEASE_RING_2_RXDMA_ERROR_CODE_LSB 18 1076 #define WBM_RELEASE_RING_2_RXDMA_ERROR_CODE_MASK 0x007c0000 1077 1078 /* Description WBM_RELEASE_RING_2_REO_PUSH_REASON 1079 1080 Field only valid when Release_source_module is set to 1081 release_source_REO 1082 1083 1084 1085 Indicates why REO pushed the frame to this release ring 1086 1087 1088 1089 <enum 0 reo_error_detected> Reo detected an error an 1090 pushed this frame to this queue 1091 1092 <enum 1 reo_routing_instruction> Reo pushed the frame to 1093 this queue per received routing instructions. No error 1094 within REO was detected 1095 1096 1097 1098 <legal 0 - 1> 1099 */ 1100 #define WBM_RELEASE_RING_2_REO_PUSH_REASON_OFFSET 0x00000008 1101 #define WBM_RELEASE_RING_2_REO_PUSH_REASON_LSB 23 1102 #define WBM_RELEASE_RING_2_REO_PUSH_REASON_MASK 0x01800000 1103 1104 /* Description WBM_RELEASE_RING_2_REO_ERROR_CODE 1105 1106 Field only valid when 'Reo_push_reason' set to 1107 'reo_error_detected'. 1108 1109 1110 1111 <enum 0 reo_queue_desc_addr_zero> Reo queue descriptor 1112 provided in the REO_ENTRANCE ring is set to 0 1113 1114 <enum 1 reo_queue_desc_not_valid> Reo queue descriptor 1115 valid bit is NOT set 1116 1117 <enum 2 ampdu_in_non_ba> AMPDU frame received without BA 1118 session having been setup. 1119 1120 <enum 3 non_ba_duplicate> Non-BA session, SN equal to 1121 SSN, Retry bit set: duplicate frame 1122 1123 <enum 4 ba_duplicate> BA session, duplicate frame 1124 1125 <enum 5 regular_frame_2k_jump> A normal (management/data 1126 frame) received with 2K jump in SN 1127 1128 <enum 6 bar_frame_2k_jump> A bar received with 2K jump 1129 in SSN 1130 1131 <enum 7 regular_frame_OOR> A normal (management/data 1132 frame) received with SN falling within the OOR window 1133 1134 <enum 8 bar_frame_OOR> A bar received with SSN falling 1135 within the OOR window 1136 1137 <enum 9 bar_frame_no_ba_session> A bar received without 1138 a BA session 1139 1140 <enum 10 bar_frame_sn_equals_ssn> A bar received with 1141 SSN equal to SN 1142 1143 <enum 11 pn_check_failed> PN Check Failed packet. 1144 1145 <enum 12 2k_error_handling_flag_set> Frame is forwarded 1146 as a result of the 'Seq_2k_error_detected_flag' been set in 1147 the REO Queue descriptor 1148 1149 <enum 13 pn_error_handling_flag_set> Frame is forwarded 1150 as a result of the 'pn_error_detected_flag' been set in the 1151 REO Queue descriptor 1152 1153 <enum 14 queue_descriptor_blocked_set> Frame is 1154 forwarded as a result of the queue descriptor(address) being 1155 blocked as SW/FW seems to be currently in the process of 1156 making updates to this descriptor... 1157 1158 1159 1160 <legal 0-14> 1161 */ 1162 #define WBM_RELEASE_RING_2_REO_ERROR_CODE_OFFSET 0x00000008 1163 #define WBM_RELEASE_RING_2_REO_ERROR_CODE_LSB 25 1164 #define WBM_RELEASE_RING_2_REO_ERROR_CODE_MASK 0x3e000000 1165 1166 /* Description WBM_RELEASE_RING_2_WBM_INTERNAL_ERROR 1167 1168 Can only be set by WBM. 1169 1170 1171 1172 Is set when WBM got a buffer pointer but the action was 1173 to push it to the idle link descriptor ring or do link 1174 related activity 1175 1176 OR 1177 1178 Is set when WBM got a link buffer pointer but the action 1179 was to push it to the buffer descriptor ring 1180 1181 1182 1183 <legal all> 1184 */ 1185 #define WBM_RELEASE_RING_2_WBM_INTERNAL_ERROR_OFFSET 0x00000008 1186 #define WBM_RELEASE_RING_2_WBM_INTERNAL_ERROR_LSB 30 1187 #define WBM_RELEASE_RING_2_WBM_INTERNAL_ERROR_MASK 0x40000000 1188 1189 /* Description WBM_RELEASE_RING_2_RESERVED_2 1190 1191 <legal 0> 1192 */ 1193 #define WBM_RELEASE_RING_2_RESERVED_2_OFFSET 0x00000008 1194 #define WBM_RELEASE_RING_2_RESERVED_2_LSB 31 1195 #define WBM_RELEASE_RING_2_RESERVED_2_MASK 0x80000000 1196 1197 /* Description WBM_RELEASE_RING_3_TQM_STATUS_NUMBER 1198 1199 Field only valid when Release_source_module is set to 1200 release_source_TQM 1201 1202 1203 1204 The value in this field is equal to value of the 1205 'TQM_CMD_Number' field the TQM command or the 1206 'TQM_add_cmd_Number' field from the TQM entrance ring 1207 descriptor 1208 1209 1210 1211 This field helps to correlate the statuses with the TQM 1212 commands. 1213 1214 1215 1216 NOTE that SW could program this number to be equal to 1217 the PPDU_ID number in case direct correlation with the PPDU 1218 ID is desired 1219 1220 1221 1222 <legal all> 1223 */ 1224 #define WBM_RELEASE_RING_3_TQM_STATUS_NUMBER_OFFSET 0x0000000c 1225 #define WBM_RELEASE_RING_3_TQM_STATUS_NUMBER_LSB 0 1226 #define WBM_RELEASE_RING_3_TQM_STATUS_NUMBER_MASK 0x00ffffff 1227 1228 /* Description WBM_RELEASE_RING_3_TRANSMIT_COUNT 1229 1230 Field only valid when Release_source_module is set to 1231 release_source_TQM 1232 1233 1234 1235 The number of times this frame has been transmitted 1236 */ 1237 #define WBM_RELEASE_RING_3_TRANSMIT_COUNT_OFFSET 0x0000000c 1238 #define WBM_RELEASE_RING_3_TRANSMIT_COUNT_LSB 24 1239 #define WBM_RELEASE_RING_3_TRANSMIT_COUNT_MASK 0x7f000000 1240 1241 /* Description WBM_RELEASE_RING_3_RESERVED_3A 1242 1243 <legal 0> 1244 */ 1245 #define WBM_RELEASE_RING_3_RESERVED_3A_OFFSET 0x0000000c 1246 #define WBM_RELEASE_RING_3_RESERVED_3A_LSB 31 1247 #define WBM_RELEASE_RING_3_RESERVED_3A_MASK 0x80000000 1248 1249 /* Description WBM_RELEASE_RING_4_ACK_FRAME_RSSI 1250 1251 This field is only valid when the source is TQM. 1252 1253 1254 1255 If this frame is removed as the result of the reception 1256 of an ACK or BA, this field indicates the RSSI of the 1257 received ACK or BA frame. 1258 1259 1260 1261 When the frame is removed as result of a direct remove 1262 command from the SW, this field is set to 0x0 (which is 1263 never a valid value when real RSSI is available) 1264 1265 1266 1267 <legal all> 1268 */ 1269 #define WBM_RELEASE_RING_4_ACK_FRAME_RSSI_OFFSET 0x00000010 1270 #define WBM_RELEASE_RING_4_ACK_FRAME_RSSI_LSB 0 1271 #define WBM_RELEASE_RING_4_ACK_FRAME_RSSI_MASK 0x000000ff 1272 1273 /* Description WBM_RELEASE_RING_4_SW_RELEASE_DETAILS_VALID 1274 1275 Consumer: SW 1276 1277 Producer: WBM 1278 1279 1280 1281 When set, some WBM specific release info for SW is 1282 valid. 1283 1284 This is set when WMB got a 'release_msdu_list' command 1285 from TQM and the return buffer manager is not WMB. WBM will 1286 then de-aggregate all the MSDUs and pass them one at a time 1287 on to the 'buffer owner' 1288 1289 1290 1291 <legal all> 1292 */ 1293 #define WBM_RELEASE_RING_4_SW_RELEASE_DETAILS_VALID_OFFSET 0x00000010 1294 #define WBM_RELEASE_RING_4_SW_RELEASE_DETAILS_VALID_LSB 8 1295 #define WBM_RELEASE_RING_4_SW_RELEASE_DETAILS_VALID_MASK 0x00000100 1296 1297 /* Description WBM_RELEASE_RING_4_FIRST_MSDU 1298 1299 Field only valid when SW_release_details_valid is set. 1300 1301 1302 1303 Consumer: SW 1304 1305 Producer: WBM 1306 1307 1308 1309 When set, this MSDU is the first MSDU pointed to in the 1310 'release_msdu_list' command. 1311 1312 1313 1314 <legal all> 1315 */ 1316 #define WBM_RELEASE_RING_4_FIRST_MSDU_OFFSET 0x00000010 1317 #define WBM_RELEASE_RING_4_FIRST_MSDU_LSB 9 1318 #define WBM_RELEASE_RING_4_FIRST_MSDU_MASK 0x00000200 1319 1320 /* Description WBM_RELEASE_RING_4_LAST_MSDU 1321 1322 Field only valid when SW_release_details_valid is set. 1323 1324 1325 1326 Consumer: SW 1327 1328 Producer: WBM 1329 1330 1331 1332 When set, this MSDU is the last MSDU pointed to in the 1333 'release_msdu_list' command. 1334 1335 1336 1337 <legal all> 1338 */ 1339 #define WBM_RELEASE_RING_4_LAST_MSDU_OFFSET 0x00000010 1340 #define WBM_RELEASE_RING_4_LAST_MSDU_LSB 10 1341 #define WBM_RELEASE_RING_4_LAST_MSDU_MASK 0x00000400 1342 1343 /* Description WBM_RELEASE_RING_4_MSDU_PART_OF_AMSDU 1344 1345 Field only valid when SW_release_details_valid is set. 1346 1347 1348 1349 Consumer: SW 1350 1351 Producer: WBM 1352 1353 1354 1355 When set, this MSDU was part of an A-MSDU in MPDU 1356 1357 <legal all> 1358 */ 1359 #define WBM_RELEASE_RING_4_MSDU_PART_OF_AMSDU_OFFSET 0x00000010 1360 #define WBM_RELEASE_RING_4_MSDU_PART_OF_AMSDU_LSB 11 1361 #define WBM_RELEASE_RING_4_MSDU_PART_OF_AMSDU_MASK 0x00000800 1362 1363 /* Description WBM_RELEASE_RING_4_FW_TX_NOTIFY_FRAME 1364 1365 Field only valid when SW_release_details_valid is set. 1366 1367 1368 1369 Consumer: SW 1370 1371 Producer: WBM 1372 1373 1374 1375 This is the FW_tx_notify_frame field from the 1376 1377 <legal all> 1378 */ 1379 #define WBM_RELEASE_RING_4_FW_TX_NOTIFY_FRAME_OFFSET 0x00000010 1380 #define WBM_RELEASE_RING_4_FW_TX_NOTIFY_FRAME_LSB 12 1381 #define WBM_RELEASE_RING_4_FW_TX_NOTIFY_FRAME_MASK 0x00001000 1382 1383 /* Description WBM_RELEASE_RING_4_BUFFER_TIMESTAMP 1384 1385 Field only valid when SW_release_details_valid is set. 1386 1387 1388 1389 Consumer: SW 1390 1391 Producer: WBM 1392 1393 1394 1395 This is the Buffer_timestamp field from the 1396 1397 <legal all> 1398 */ 1399 #define WBM_RELEASE_RING_4_BUFFER_TIMESTAMP_OFFSET 0x00000010 1400 #define WBM_RELEASE_RING_4_BUFFER_TIMESTAMP_LSB 13 1401 #define WBM_RELEASE_RING_4_BUFFER_TIMESTAMP_MASK 0xffffe000 1402 #define WBM_RELEASE_RING_5_TX_RATE_STATS_INFO_TX_RATE_STATS_OFFSET 0x00000014 1403 #define WBM_RELEASE_RING_5_TX_RATE_STATS_INFO_TX_RATE_STATS_LSB 13 1404 #define WBM_RELEASE_RING_5_TX_RATE_STATS_INFO_TX_RATE_STATS_MASK 0xffffffff 1405 #define WBM_RELEASE_RING_6_TX_RATE_STATS_INFO_TX_RATE_STATS_OFFSET 0x00000018 1406 #define WBM_RELEASE_RING_6_TX_RATE_STATS_INFO_TX_RATE_STATS_LSB 13 1407 #define WBM_RELEASE_RING_6_TX_RATE_STATS_INFO_TX_RATE_STATS_MASK 0xffffffff 1408 1409 /* Description WBM_RELEASE_RING_7_SW_PEER_ID 1410 1411 Field only valid when Release_source_module is set to 1412 release_source_TQM 1413 1414 1415 1416 1) Release of msdu buffer due to drop_frame = 1. Flow is 1417 not fetched and hence sw_peer_id and tid = 0 1418 1419 buffer_or_desc_type = e_num 0 1420 MSDU_rel_buffertqm_release_reason = e_num 1 1421 tqm_rr_rem_cmd_rem 1422 1423 1424 1425 1426 1427 2) Release of msdu buffer due to Flow is not fetched and 1428 hence sw_peer_id and tid = 0 1429 1430 buffer_or_desc_type = e_num 0 1431 MSDU_rel_buffertqm_release_reason = e_num 1 1432 tqm_rr_rem_cmd_rem 1433 1434 1435 1436 1437 1438 3) Release of msdu link due to remove_mpdu or acked_mpdu 1439 command. 1440 1441 buffer_or_desc_type = e_num1 1442 msdu_link_descriptortqm_release_reason can be:e_num 1 1443 tqm_rr_rem_cmd_reme_num 2 tqm_rr_rem_cmd_tx 1444 1445 e_num 3 tqm_rr_rem_cmd_notxe_num 4 tqm_rr_rem_cmd_aged 1446 1447 1448 1449 Sw_peer_id from the TX_MSDU_FLOW descriptor or 1450 TX_MPDU_QUEUE descriptor 1451 1452 <legal all> 1453 */ 1454 #define WBM_RELEASE_RING_7_SW_PEER_ID_OFFSET 0x0000001c 1455 #define WBM_RELEASE_RING_7_SW_PEER_ID_LSB 0 1456 #define WBM_RELEASE_RING_7_SW_PEER_ID_MASK 0x0000ffff 1457 1458 /* Description WBM_RELEASE_RING_7_TID 1459 1460 Field only valid when Release_source_module is set to 1461 release_source_TQM 1462 1463 1464 1465 1) Release of msdu buffer due to drop_frame = 1. Flow is 1466 not fetched and hence sw_peer_id and tid = 0 1467 1468 buffer_or_desc_type = e_num 0 1469 MSDU_rel_buffertqm_release_reason = e_num 1 1470 tqm_rr_rem_cmd_rem 1471 1472 1473 1474 1475 1476 2) Release of msdu buffer due to Flow is not fetched and 1477 hence sw_peer_id and tid = 0 1478 1479 buffer_or_desc_type = e_num 0 1480 MSDU_rel_buffertqm_release_reason = e_num 1 1481 tqm_rr_rem_cmd_rem 1482 1483 1484 1485 1486 1487 3) Release of msdu link due to remove_mpdu or acked_mpdu 1488 command. 1489 1490 buffer_or_desc_type = e_num1 1491 msdu_link_descriptortqm_release_reason can be:e_num 1 1492 tqm_rr_rem_cmd_reme_num 2 tqm_rr_rem_cmd_tx 1493 1494 e_num 3 tqm_rr_rem_cmd_notxe_num 4 tqm_rr_rem_cmd_aged 1495 1496 1497 1498 1499 1500 This field represents the TID from the TX_MSDU_FLOW 1501 descriptor or TX_MPDU_QUEUE descriptor 1502 1503 1504 1505 <legal all> 1506 */ 1507 #define WBM_RELEASE_RING_7_TID_OFFSET 0x0000001c 1508 #define WBM_RELEASE_RING_7_TID_LSB 16 1509 #define WBM_RELEASE_RING_7_TID_MASK 0x000f0000 1510 1511 /* Description WBM_RELEASE_RING_7_RING_ID 1512 1513 Consumer: TQM/REO/RXDMA/SW 1514 1515 Producer: SRNG (of RXDMA) 1516 1517 1518 1519 For debugging. 1520 1521 This field is filled in by the SRNG module. 1522 1523 It help to identify the ring that is being looked <legal 1524 all> 1525 */ 1526 #define WBM_RELEASE_RING_7_RING_ID_OFFSET 0x0000001c 1527 #define WBM_RELEASE_RING_7_RING_ID_LSB 20 1528 #define WBM_RELEASE_RING_7_RING_ID_MASK 0x0ff00000 1529 1530 /* Description WBM_RELEASE_RING_7_LOOPING_COUNT 1531 1532 Consumer: WBM/SW/FW 1533 1534 Producer: SW/TQM/RXDMA/REO/SWITCH 1535 1536 1537 1538 A count value that indicates the number of times the 1539 producer of entries into the Buffer Manager Ring has looped 1540 around the ring. 1541 1542 At initialization time, this value is set to 0. On the 1543 first loop, this value is set to 1. After the max value is 1544 reached allowed by the number of bits for this field, the 1545 count value continues with 0 again. 1546 1547 1548 1549 In case SW is the consumer of the ring entries, it can 1550 use this field to figure out up to where the producer of 1551 entries has created new entries. This eliminates the need to 1552 check where the head pointer' of the ring is located once 1553 the SW starts processing an interrupt indicating that new 1554 entries have been put into this ring... 1555 1556 1557 1558 Also note that SW if it wants only needs to look at the 1559 LSB bit of this count value. 1560 1561 <legal all> 1562 */ 1563 #define WBM_RELEASE_RING_7_LOOPING_COUNT_OFFSET 0x0000001c 1564 #define WBM_RELEASE_RING_7_LOOPING_COUNT_LSB 28 1565 #define WBM_RELEASE_RING_7_LOOPING_COUNT_MASK 0xf0000000 1566 1567 1568 #endif // _WBM_RELEASE_RING_H_ 1569