1 /** 2 * Copyright (C) 2005 - 2010 ServerEngines 3 * All rights reserved. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License version 2 7 * as published by the Free Software Foundation. The full GNU General 8 * Public License is included in this distribution in the file called COPYING. 9 * 10 * Written by: Jayamohan Kallickal (jayamohank@serverengines.com) 11 * 12 * Contact Information: 13 * linux-drivers@serverengines.com 14 * 15 * ServerEngines 16 * 209 N. Fair Oaks Ave 17 * Sunnyvale, CA 94085 18 * 19 */ 20 21 #ifndef _BEISCSI_MAIN_ 22 #define _BEISCSI_MAIN_ 23 24 #include <linux/kernel.h> 25 #include <linux/pci.h> 26 #include <linux/if_ether.h> 27 #include <linux/in.h> 28 #include <scsi/scsi.h> 29 #include <scsi/scsi_cmnd.h> 30 #include <scsi/scsi_device.h> 31 #include <scsi/scsi_host.h> 32 #include <scsi/iscsi_proto.h> 33 #include <scsi/libiscsi.h> 34 #include <scsi/scsi_transport_iscsi.h> 35 36 #include "be.h" 37 #define DRV_NAME "be2iscsi" 38 #define BUILD_STR "2.0.549.0" 39 #define BE_NAME "ServerEngines BladeEngine2" \ 40 "Linux iSCSI Driver version" BUILD_STR 41 #define DRV_DESC BE_NAME " " "Driver" 42 43 #define BE_VENDOR_ID 0x19A2 44 /* DEVICE ID's for BE2 */ 45 #define BE_DEVICE_ID1 0x212 46 #define OC_DEVICE_ID1 0x702 47 #define OC_DEVICE_ID2 0x703 48 49 /* DEVICE ID's for BE3 */ 50 #define BE_DEVICE_ID2 0x222 51 #define OC_DEVICE_ID3 0x712 52 53 #define BE2_IO_DEPTH 1024 54 #define BE2_MAX_SESSIONS 256 55 #define BE2_CMDS_PER_CXN 128 56 #define BE2_TMFS 16 57 #define BE2_NOPOUT_REQ 16 58 #define BE2_SGE 32 59 #define BE2_DEFPDU_HDR_SZ 64 60 #define BE2_DEFPDU_DATA_SZ 8192 61 62 #define MAX_CPUS 31 63 #define BEISCSI_SGLIST_ELEMENTS 30 64 65 #define BEISCSI_CMD_PER_LUN 128 /* scsi_host->cmd_per_lun */ 66 #define BEISCSI_MAX_SECTORS 2048 /* scsi_host->max_sectors */ 67 68 #define BEISCSI_MAX_CMD_LEN 16 /* scsi_host->max_cmd_len */ 69 #define BEISCSI_NUM_MAX_LUN 256 /* scsi_host->max_lun */ 70 #define BEISCSI_NUM_DEVICES_SUPPORTED 0x01 71 #define BEISCSI_MAX_FRAGS_INIT 192 72 #define BE_NUM_MSIX_ENTRIES 1 73 74 #define MPU_EP_CONTROL 0 75 #define MPU_EP_SEMAPHORE 0xac 76 #define BE2_SOFT_RESET 0x5c 77 #define BE2_PCI_ONLINE0 0xb0 78 #define BE2_PCI_ONLINE1 0xb4 79 #define BE2_SET_RESET 0x80 80 #define BE2_MPU_IRAM_ONLINE 0x00000080 81 82 #define BE_SENSE_INFO_SIZE 258 83 #define BE_ISCSI_PDU_HEADER_SIZE 64 84 #define BE_MIN_MEM_SIZE 16384 85 #define MAX_CMD_SZ 65536 86 #define IIOC_SCSI_DATA 0x05 /* Write Operation */ 87 88 #define DBG_LVL 0x00000001 89 #define DBG_LVL_1 0x00000001 90 #define DBG_LVL_2 0x00000002 91 #define DBG_LVL_3 0x00000004 92 #define DBG_LVL_4 0x00000008 93 #define DBG_LVL_5 0x00000010 94 #define DBG_LVL_6 0x00000020 95 #define DBG_LVL_7 0x00000040 96 #define DBG_LVL_8 0x00000080 97 98 #define SE_DEBUG(debug_mask, fmt, args...) \ 99 do { \ 100 if (debug_mask & DBG_LVL) { \ 101 printk(KERN_ERR "(%s():%d):", __func__, __LINE__);\ 102 printk(fmt, ##args); \ 103 } \ 104 } while (0); 105 106 #define BE_ADAPTER_UP 0x00000000 107 #define BE_ADAPTER_LINK_DOWN 0x00000001 108 /** 109 * hardware needs the async PDU buffers to be posted in multiples of 8 110 * So have atleast 8 of them by default 111 */ 112 113 #define HWI_GET_ASYNC_PDU_CTX(phwi) (phwi->phwi_ctxt->pasync_ctx) 114 115 /********* Memory BAR register ************/ 116 #define PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET 0xfc 117 /** 118 * Host Interrupt Enable, if set interrupts are enabled although "PCI Interrupt 119 * Disable" may still globally block interrupts in addition to individual 120 * interrupt masks; a mechanism for the device driver to block all interrupts 121 * atomically without having to arbitrate for the PCI Interrupt Disable bit 122 * with the OS. 123 */ 124 #define MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK (1 << 29) /* bit 29 */ 125 126 /********* ISR0 Register offset **********/ 127 #define CEV_ISR0_OFFSET 0xC18 128 #define CEV_ISR_SIZE 4 129 130 /** 131 * Macros for reading/writing a protection domain or CSR registers 132 * in BladeEngine. 133 */ 134 135 #define DB_TXULP0_OFFSET 0x40 136 #define DB_RXULP0_OFFSET 0xA0 137 /********* Event Q door bell *************/ 138 #define DB_EQ_OFFSET DB_CQ_OFFSET 139 #define DB_EQ_RING_ID_MASK 0x1FF /* bits 0 - 8 */ 140 /* Clear the interrupt for this eq */ 141 #define DB_EQ_CLR_SHIFT (9) /* bit 9 */ 142 /* Must be 1 */ 143 #define DB_EQ_EVNT_SHIFT (10) /* bit 10 */ 144 /* Number of event entries processed */ 145 #define DB_EQ_NUM_POPPED_SHIFT (16) /* bits 16 - 28 */ 146 /* Rearm bit */ 147 #define DB_EQ_REARM_SHIFT (29) /* bit 29 */ 148 149 /********* Compl Q door bell *************/ 150 #define DB_CQ_OFFSET 0x120 151 #define DB_CQ_RING_ID_MASK 0x3FF /* bits 0 - 9 */ 152 /* Number of event entries processed */ 153 #define DB_CQ_NUM_POPPED_SHIFT (16) /* bits 16 - 28 */ 154 /* Rearm bit */ 155 #define DB_CQ_REARM_SHIFT (29) /* bit 29 */ 156 157 #define GET_HWI_CONTROLLER_WS(pc) (pc->phwi_ctrlr) 158 #define HWI_GET_DEF_BUFQ_ID(pc) (((struct hwi_controller *)\ 159 (GET_HWI_CONTROLLER_WS(pc)))->default_pdu_data.id) 160 #define HWI_GET_DEF_HDRQ_ID(pc) (((struct hwi_controller *)\ 161 (GET_HWI_CONTROLLER_WS(pc)))->default_pdu_hdr.id) 162 163 #define PAGES_REQUIRED(x) \ 164 ((x < PAGE_SIZE) ? 1 : ((x + PAGE_SIZE - 1) / PAGE_SIZE)) 165 166 enum be_mem_enum { 167 HWI_MEM_ADDN_CONTEXT, 168 HWI_MEM_WRB, 169 HWI_MEM_WRBH, 170 HWI_MEM_SGLH, 171 HWI_MEM_SGE, 172 HWI_MEM_ASYNC_HEADER_BUF, /* 5 */ 173 HWI_MEM_ASYNC_DATA_BUF, 174 HWI_MEM_ASYNC_HEADER_RING, 175 HWI_MEM_ASYNC_DATA_RING, 176 HWI_MEM_ASYNC_HEADER_HANDLE, 177 HWI_MEM_ASYNC_DATA_HANDLE, /* 10 */ 178 HWI_MEM_ASYNC_PDU_CONTEXT, 179 ISCSI_MEM_GLOBAL_HEADER, 180 SE_MEM_MAX 181 }; 182 183 struct be_bus_address32 { 184 unsigned int address_lo; 185 unsigned int address_hi; 186 }; 187 188 struct be_bus_address64 { 189 unsigned long long address; 190 }; 191 192 struct be_bus_address { 193 union { 194 struct be_bus_address32 a32; 195 struct be_bus_address64 a64; 196 } u; 197 }; 198 199 struct mem_array { 200 struct be_bus_address bus_address; /* Bus address of location */ 201 void *virtual_address; /* virtual address to the location */ 202 unsigned int size; /* Size required by memory block */ 203 }; 204 205 struct be_mem_descriptor { 206 unsigned int index; /* Index of this memory parameter */ 207 unsigned int category; /* type indicates cached/non-cached */ 208 unsigned int num_elements; /* number of elements in this 209 * descriptor 210 */ 211 unsigned int alignment_mask; /* Alignment mask for this block */ 212 unsigned int size_in_bytes; /* Size required by memory block */ 213 struct mem_array *mem_array; 214 }; 215 216 struct sgl_handle { 217 unsigned int sgl_index; 218 unsigned int type; 219 unsigned int cid; 220 struct iscsi_task *task; 221 struct iscsi_sge *pfrag; 222 }; 223 224 struct hba_parameters { 225 unsigned int ios_per_ctrl; 226 unsigned int cxns_per_ctrl; 227 unsigned int asyncpdus_per_ctrl; 228 unsigned int icds_per_ctrl; 229 unsigned int num_sge_per_io; 230 unsigned int defpdu_hdr_sz; 231 unsigned int defpdu_data_sz; 232 unsigned int num_cq_entries; 233 unsigned int num_eq_entries; 234 unsigned int wrbs_per_cxn; 235 unsigned int crashmode; 236 unsigned int hba_num; 237 238 unsigned int mgmt_ws_sz; 239 unsigned int hwi_ws_sz; 240 241 unsigned int eto; 242 unsigned int ldto; 243 244 unsigned int dbg_flags; 245 unsigned int num_cxn; 246 247 unsigned int eq_timer; 248 /** 249 * These are calculated from other params. They're here 250 * for debug purposes 251 */ 252 unsigned int num_mcc_pages; 253 unsigned int num_mcc_cq_pages; 254 unsigned int num_cq_pages; 255 unsigned int num_eq_pages; 256 257 unsigned int num_async_pdu_buf_pages; 258 unsigned int num_async_pdu_buf_sgl_pages; 259 unsigned int num_async_pdu_buf_cq_pages; 260 261 unsigned int num_async_pdu_hdr_pages; 262 unsigned int num_async_pdu_hdr_sgl_pages; 263 unsigned int num_async_pdu_hdr_cq_pages; 264 265 unsigned int num_sge; 266 }; 267 268 struct invalidate_command_table { 269 unsigned short icd; 270 unsigned short cid; 271 } __packed; 272 273 struct beiscsi_hba { 274 struct hba_parameters params; 275 struct hwi_controller *phwi_ctrlr; 276 unsigned int mem_req[SE_MEM_MAX]; 277 /* PCI BAR mapped addresses */ 278 u8 __iomem *csr_va; /* CSR */ 279 u8 __iomem *db_va; /* Door Bell */ 280 u8 __iomem *pci_va; /* PCI Config */ 281 struct be_bus_address csr_pa; /* CSR */ 282 struct be_bus_address db_pa; /* CSR */ 283 struct be_bus_address pci_pa; /* CSR */ 284 /* PCI representation of our HBA */ 285 struct pci_dev *pcidev; 286 unsigned int state; 287 unsigned short asic_revision; 288 unsigned int num_cpus; 289 unsigned int nxt_cqid; 290 struct msix_entry msix_entries[MAX_CPUS + 1]; 291 bool msix_enabled; 292 struct be_mem_descriptor *init_mem; 293 294 unsigned short io_sgl_alloc_index; 295 unsigned short io_sgl_free_index; 296 unsigned short io_sgl_hndl_avbl; 297 struct sgl_handle **io_sgl_hndl_base; 298 struct sgl_handle **sgl_hndl_array; 299 300 unsigned short eh_sgl_alloc_index; 301 unsigned short eh_sgl_free_index; 302 unsigned short eh_sgl_hndl_avbl; 303 struct sgl_handle **eh_sgl_hndl_base; 304 spinlock_t io_sgl_lock; 305 spinlock_t mgmt_sgl_lock; 306 spinlock_t isr_lock; 307 unsigned int age; 308 unsigned short avlbl_cids; 309 unsigned short cid_alloc; 310 unsigned short cid_free; 311 struct beiscsi_conn *conn_table[BE2_MAX_SESSIONS * 2]; 312 struct list_head hba_queue; 313 unsigned short *cid_array; 314 struct iscsi_endpoint **ep_array; 315 struct iscsi_boot_kset *boot_kset; 316 struct Scsi_Host *shost; 317 struct { 318 /** 319 * group together since they are used most frequently 320 * for cid to cri conversion 321 */ 322 unsigned int iscsi_cid_start; 323 unsigned int phys_port; 324 325 unsigned int isr_offset; 326 unsigned int iscsi_icd_start; 327 unsigned int iscsi_cid_count; 328 unsigned int iscsi_icd_count; 329 unsigned int pci_function; 330 331 unsigned short cid_alloc; 332 unsigned short cid_free; 333 unsigned short avlbl_cids; 334 unsigned short iscsi_features; 335 spinlock_t cid_lock; 336 } fw_config; 337 338 u8 mac_address[ETH_ALEN]; 339 unsigned short todo_cq; 340 unsigned short todo_mcc_cq; 341 char wq_name[20]; 342 struct workqueue_struct *wq; /* The actuak work queue */ 343 struct work_struct work_cqs; /* The work being queued */ 344 struct be_ctrl_info ctrl; 345 unsigned int generation; 346 unsigned int read_mac_address; 347 struct mgmt_session_info boot_sess; 348 struct invalidate_command_table inv_tbl[128]; 349 350 }; 351 352 struct beiscsi_session { 353 struct pci_pool *bhs_pool; 354 }; 355 356 /** 357 * struct beiscsi_conn - iscsi connection structure 358 */ 359 struct beiscsi_conn { 360 struct iscsi_conn *conn; 361 struct beiscsi_hba *phba; 362 u32 exp_statsn; 363 u32 beiscsi_conn_cid; 364 struct beiscsi_endpoint *ep; 365 unsigned short login_in_progress; 366 struct wrb_handle *plogin_wrb_handle; 367 struct sgl_handle *plogin_sgl_handle; 368 struct beiscsi_session *beiscsi_sess; 369 struct iscsi_task *task; 370 }; 371 372 /* This structure is used by the chip */ 373 struct pdu_data_out { 374 u32 dw[12]; 375 }; 376 /** 377 * Pseudo amap definition in which each bit of the actual structure is defined 378 * as a byte: used to calculate offset/shift/mask of each field 379 */ 380 struct amap_pdu_data_out { 381 u8 opcode[6]; /* opcode */ 382 u8 rsvd0[2]; /* should be 0 */ 383 u8 rsvd1[7]; 384 u8 final_bit; /* F bit */ 385 u8 rsvd2[16]; 386 u8 ahs_length[8]; /* no AHS */ 387 u8 data_len_hi[8]; 388 u8 data_len_lo[16]; /* DataSegmentLength */ 389 u8 lun[64]; 390 u8 itt[32]; /* ITT; initiator task tag */ 391 u8 ttt[32]; /* TTT; valid for R2T or 0xffffffff */ 392 u8 rsvd3[32]; 393 u8 exp_stat_sn[32]; 394 u8 rsvd4[32]; 395 u8 data_sn[32]; 396 u8 buffer_offset[32]; 397 u8 rsvd5[32]; 398 }; 399 400 struct be_cmd_bhs { 401 struct iscsi_cmd iscsi_hdr; 402 unsigned char pad1[16]; 403 struct pdu_data_out iscsi_data_pdu; 404 unsigned char pad2[BE_SENSE_INFO_SIZE - 405 sizeof(struct pdu_data_out)]; 406 }; 407 408 struct beiscsi_io_task { 409 struct wrb_handle *pwrb_handle; 410 struct sgl_handle *psgl_handle; 411 struct beiscsi_conn *conn; 412 struct scsi_cmnd *scsi_cmnd; 413 unsigned int cmd_sn; 414 unsigned int flags; 415 unsigned short cid; 416 unsigned short header_len; 417 itt_t libiscsi_itt; 418 struct be_cmd_bhs *cmd_bhs; 419 struct be_bus_address bhs_pa; 420 unsigned short bhs_len; 421 }; 422 423 struct be_nonio_bhs { 424 struct iscsi_hdr iscsi_hdr; 425 unsigned char pad1[16]; 426 struct pdu_data_out iscsi_data_pdu; 427 unsigned char pad2[BE_SENSE_INFO_SIZE - 428 sizeof(struct pdu_data_out)]; 429 }; 430 431 struct be_status_bhs { 432 struct iscsi_cmd iscsi_hdr; 433 unsigned char pad1[16]; 434 /** 435 * The plus 2 below is to hold the sense info length that gets 436 * DMA'ed by RxULP 437 */ 438 unsigned char sense_info[BE_SENSE_INFO_SIZE]; 439 }; 440 441 struct iscsi_sge { 442 u32 dw[4]; 443 }; 444 445 /** 446 * Pseudo amap definition in which each bit of the actual structure is defined 447 * as a byte: used to calculate offset/shift/mask of each field 448 */ 449 struct amap_iscsi_sge { 450 u8 addr_hi[32]; 451 u8 addr_lo[32]; 452 u8 sge_offset[22]; /* DWORD 2 */ 453 u8 rsvd0[9]; /* DWORD 2 */ 454 u8 last_sge; /* DWORD 2 */ 455 u8 len[17]; /* DWORD 3 */ 456 u8 rsvd1[15]; /* DWORD 3 */ 457 }; 458 459 struct beiscsi_offload_params { 460 u32 dw[5]; 461 }; 462 463 #define OFFLD_PARAMS_ERL 0x00000003 464 #define OFFLD_PARAMS_DDE 0x00000004 465 #define OFFLD_PARAMS_HDE 0x00000008 466 #define OFFLD_PARAMS_IR2T 0x00000010 467 #define OFFLD_PARAMS_IMD 0x00000020 468 469 /** 470 * Pseudo amap definition in which each bit of the actual structure is defined 471 * as a byte: used to calculate offset/shift/mask of each field 472 */ 473 struct amap_beiscsi_offload_params { 474 u8 max_burst_length[32]; 475 u8 max_send_data_segment_length[32]; 476 u8 first_burst_length[32]; 477 u8 erl[2]; 478 u8 dde[1]; 479 u8 hde[1]; 480 u8 ir2t[1]; 481 u8 imd[1]; 482 u8 pad[26]; 483 u8 exp_statsn[32]; 484 }; 485 486 /* void hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn, 487 struct beiscsi_hba *phba, struct sol_cqe *psol);*/ 488 489 struct async_pdu_handle { 490 struct list_head link; 491 struct be_bus_address pa; 492 void *pbuffer; 493 unsigned int consumed; 494 unsigned char index; 495 unsigned char is_header; 496 unsigned short cri; 497 unsigned long buffer_len; 498 }; 499 500 struct hwi_async_entry { 501 struct { 502 unsigned char hdr_received; 503 unsigned char hdr_len; 504 unsigned short bytes_received; 505 unsigned int bytes_needed; 506 struct list_head list; 507 } wait_queue; 508 509 struct list_head header_busy_list; 510 struct list_head data_busy_list; 511 }; 512 513 struct hwi_async_pdu_context { 514 struct { 515 struct be_bus_address pa_base; 516 void *va_base; 517 void *ring_base; 518 struct async_pdu_handle *handle_base; 519 520 unsigned int host_write_ptr; 521 unsigned int ep_read_ptr; 522 unsigned int writables; 523 524 unsigned int free_entries; 525 unsigned int busy_entries; 526 unsigned int buffer_size; 527 unsigned int num_entries; 528 529 struct list_head free_list; 530 } async_header; 531 532 struct { 533 struct be_bus_address pa_base; 534 void *va_base; 535 void *ring_base; 536 struct async_pdu_handle *handle_base; 537 538 unsigned int host_write_ptr; 539 unsigned int ep_read_ptr; 540 unsigned int writables; 541 542 unsigned int free_entries; 543 unsigned int busy_entries; 544 unsigned int buffer_size; 545 struct list_head free_list; 546 unsigned int num_entries; 547 } async_data; 548 549 /** 550 * This is a varying size list! Do not add anything 551 * after this entry!! 552 */ 553 struct hwi_async_entry async_entry[BE2_MAX_SESSIONS * 2]; 554 }; 555 556 #define PDUCQE_CODE_MASK 0x0000003F 557 #define PDUCQE_DPL_MASK 0xFFFF0000 558 #define PDUCQE_INDEX_MASK 0x0000FFFF 559 560 struct i_t_dpdu_cqe { 561 u32 dw[4]; 562 } __packed; 563 564 /** 565 * Pseudo amap definition in which each bit of the actual structure is defined 566 * as a byte: used to calculate offset/shift/mask of each field 567 */ 568 struct amap_i_t_dpdu_cqe { 569 u8 db_addr_hi[32]; 570 u8 db_addr_lo[32]; 571 u8 code[6]; 572 u8 cid[10]; 573 u8 dpl[16]; 574 u8 index[16]; 575 u8 num_cons[10]; 576 u8 rsvd0[4]; 577 u8 final; 578 u8 valid; 579 } __packed; 580 581 #define CQE_VALID_MASK 0x80000000 582 #define CQE_CODE_MASK 0x0000003F 583 #define CQE_CID_MASK 0x0000FFC0 584 585 #define EQE_VALID_MASK 0x00000001 586 #define EQE_MAJORCODE_MASK 0x0000000E 587 #define EQE_RESID_MASK 0xFFFF0000 588 589 struct be_eq_entry { 590 u32 dw[1]; 591 } __packed; 592 593 /** 594 * Pseudo amap definition in which each bit of the actual structure is defined 595 * as a byte: used to calculate offset/shift/mask of each field 596 */ 597 struct amap_eq_entry { 598 u8 valid; /* DWORD 0 */ 599 u8 major_code[3]; /* DWORD 0 */ 600 u8 minor_code[12]; /* DWORD 0 */ 601 u8 resource_id[16]; /* DWORD 0 */ 602 603 } __packed; 604 605 struct cq_db { 606 u32 dw[1]; 607 } __packed; 608 609 /** 610 * Pseudo amap definition in which each bit of the actual structure is defined 611 * as a byte: used to calculate offset/shift/mask of each field 612 */ 613 struct amap_cq_db { 614 u8 qid[10]; 615 u8 event[1]; 616 u8 rsvd0[5]; 617 u8 num_popped[13]; 618 u8 rearm[1]; 619 u8 rsvd1[2]; 620 } __packed; 621 622 void beiscsi_process_eq(struct beiscsi_hba *phba); 623 624 struct iscsi_wrb { 625 u32 dw[16]; 626 } __packed; 627 628 #define WRB_TYPE_MASK 0xF0000000 629 630 /** 631 * Pseudo amap definition in which each bit of the actual structure is defined 632 * as a byte: used to calculate offset/shift/mask of each field 633 */ 634 struct amap_iscsi_wrb { 635 u8 lun[14]; /* DWORD 0 */ 636 u8 lt; /* DWORD 0 */ 637 u8 invld; /* DWORD 0 */ 638 u8 wrb_idx[8]; /* DWORD 0 */ 639 u8 dsp; /* DWORD 0 */ 640 u8 dmsg; /* DWORD 0 */ 641 u8 undr_run; /* DWORD 0 */ 642 u8 over_run; /* DWORD 0 */ 643 u8 type[4]; /* DWORD 0 */ 644 u8 ptr2nextwrb[8]; /* DWORD 1 */ 645 u8 r2t_exp_dtl[24]; /* DWORD 1 */ 646 u8 sgl_icd_idx[12]; /* DWORD 2 */ 647 u8 rsvd0[20]; /* DWORD 2 */ 648 u8 exp_data_sn[32]; /* DWORD 3 */ 649 u8 iscsi_bhs_addr_hi[32]; /* DWORD 4 */ 650 u8 iscsi_bhs_addr_lo[32]; /* DWORD 5 */ 651 u8 cmdsn_itt[32]; /* DWORD 6 */ 652 u8 dif_ref_tag[32]; /* DWORD 7 */ 653 u8 sge0_addr_hi[32]; /* DWORD 8 */ 654 u8 sge0_addr_lo[32]; /* DWORD 9 */ 655 u8 sge0_offset[22]; /* DWORD 10 */ 656 u8 pbs; /* DWORD 10 */ 657 u8 dif_mode[2]; /* DWORD 10 */ 658 u8 rsvd1[6]; /* DWORD 10 */ 659 u8 sge0_last; /* DWORD 10 */ 660 u8 sge0_len[17]; /* DWORD 11 */ 661 u8 dif_meta_tag[14]; /* DWORD 11 */ 662 u8 sge0_in_ddr; /* DWORD 11 */ 663 u8 sge1_addr_hi[32]; /* DWORD 12 */ 664 u8 sge1_addr_lo[32]; /* DWORD 13 */ 665 u8 sge1_r2t_offset[22]; /* DWORD 14 */ 666 u8 rsvd2[9]; /* DWORD 14 */ 667 u8 sge1_last; /* DWORD 14 */ 668 u8 sge1_len[17]; /* DWORD 15 */ 669 u8 ref_sgl_icd_idx[12]; /* DWORD 15 */ 670 u8 rsvd3[2]; /* DWORD 15 */ 671 u8 sge1_in_ddr; /* DWORD 15 */ 672 673 } __packed; 674 675 struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid); 676 void 677 free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle); 678 679 void beiscsi_process_all_cqs(struct work_struct *work); 680 681 struct pdu_nop_out { 682 u32 dw[12]; 683 }; 684 685 /** 686 * Pseudo amap definition in which each bit of the actual structure is defined 687 * as a byte: used to calculate offset/shift/mask of each field 688 */ 689 struct amap_pdu_nop_out { 690 u8 opcode[6]; /* opcode 0x00 */ 691 u8 i_bit; /* I Bit */ 692 u8 x_bit; /* reserved; should be 0 */ 693 u8 fp_bit_filler1[7]; 694 u8 f_bit; /* always 1 */ 695 u8 reserved1[16]; 696 u8 ahs_length[8]; /* no AHS */ 697 u8 data_len_hi[8]; 698 u8 data_len_lo[16]; /* DataSegmentLength */ 699 u8 lun[64]; 700 u8 itt[32]; /* initiator id for ping or 0xffffffff */ 701 u8 ttt[32]; /* target id for ping or 0xffffffff */ 702 u8 cmd_sn[32]; 703 u8 exp_stat_sn[32]; 704 u8 reserved5[128]; 705 }; 706 707 #define PDUBASE_OPCODE_MASK 0x0000003F 708 #define PDUBASE_DATALENHI_MASK 0x0000FF00 709 #define PDUBASE_DATALENLO_MASK 0xFFFF0000 710 711 struct pdu_base { 712 u32 dw[16]; 713 } __packed; 714 715 /** 716 * Pseudo amap definition in which each bit of the actual structure is defined 717 * as a byte: used to calculate offset/shift/mask of each field 718 */ 719 struct amap_pdu_base { 720 u8 opcode[6]; 721 u8 i_bit; /* immediate bit */ 722 u8 x_bit; /* reserved, always 0 */ 723 u8 reserved1[24]; /* opcode-specific fields */ 724 u8 ahs_length[8]; /* length units is 4 byte words */ 725 u8 data_len_hi[8]; 726 u8 data_len_lo[16]; /* DatasegmentLength */ 727 u8 lun[64]; /* lun or opcode-specific fields */ 728 u8 itt[32]; /* initiator task tag */ 729 u8 reserved4[224]; 730 }; 731 732 struct iscsi_target_context_update_wrb { 733 u32 dw[16]; 734 } __packed; 735 736 /** 737 * Pseudo amap definition in which each bit of the actual structure is defined 738 * as a byte: used to calculate offset/shift/mask of each field 739 */ 740 struct amap_iscsi_target_context_update_wrb { 741 u8 lun[14]; /* DWORD 0 */ 742 u8 lt; /* DWORD 0 */ 743 u8 invld; /* DWORD 0 */ 744 u8 wrb_idx[8]; /* DWORD 0 */ 745 u8 dsp; /* DWORD 0 */ 746 u8 dmsg; /* DWORD 0 */ 747 u8 undr_run; /* DWORD 0 */ 748 u8 over_run; /* DWORD 0 */ 749 u8 type[4]; /* DWORD 0 */ 750 u8 ptr2nextwrb[8]; /* DWORD 1 */ 751 u8 max_burst_length[19]; /* DWORD 1 */ 752 u8 rsvd0[5]; /* DWORD 1 */ 753 u8 rsvd1[15]; /* DWORD 2 */ 754 u8 max_send_data_segment_length[17]; /* DWORD 2 */ 755 u8 first_burst_length[14]; /* DWORD 3 */ 756 u8 rsvd2[2]; /* DWORD 3 */ 757 u8 tx_wrbindex_drv_msg[8]; /* DWORD 3 */ 758 u8 rsvd3[5]; /* DWORD 3 */ 759 u8 session_state[3]; /* DWORD 3 */ 760 u8 rsvd4[16]; /* DWORD 4 */ 761 u8 tx_jumbo; /* DWORD 4 */ 762 u8 hde; /* DWORD 4 */ 763 u8 dde; /* DWORD 4 */ 764 u8 erl[2]; /* DWORD 4 */ 765 u8 domain_id[5]; /* DWORD 4 */ 766 u8 mode; /* DWORD 4 */ 767 u8 imd; /* DWORD 4 */ 768 u8 ir2t; /* DWORD 4 */ 769 u8 notpredblq[2]; /* DWORD 4 */ 770 u8 compltonack; /* DWORD 4 */ 771 u8 stat_sn[32]; /* DWORD 5 */ 772 u8 pad_buffer_addr_hi[32]; /* DWORD 6 */ 773 u8 pad_buffer_addr_lo[32]; /* DWORD 7 */ 774 u8 pad_addr_hi[32]; /* DWORD 8 */ 775 u8 pad_addr_lo[32]; /* DWORD 9 */ 776 u8 rsvd5[32]; /* DWORD 10 */ 777 u8 rsvd6[32]; /* DWORD 11 */ 778 u8 rsvd7[32]; /* DWORD 12 */ 779 u8 rsvd8[32]; /* DWORD 13 */ 780 u8 rsvd9[32]; /* DWORD 14 */ 781 u8 rsvd10[32]; /* DWORD 15 */ 782 783 } __packed; 784 785 struct be_ring { 786 u32 pages; /* queue size in pages */ 787 u32 id; /* queue id assigned by beklib */ 788 u32 num; /* number of elements in queue */ 789 u32 cidx; /* consumer index */ 790 u32 pidx; /* producer index -- not used by most rings */ 791 u32 item_size; /* size in bytes of one object */ 792 793 void *va; /* The virtual address of the ring. This 794 * should be last to allow 32 & 64 bit debugger 795 * extensions to work. 796 */ 797 }; 798 799 struct hwi_wrb_context { 800 struct list_head wrb_handle_list; 801 struct list_head wrb_handle_drvr_list; 802 struct wrb_handle **pwrb_handle_base; 803 struct wrb_handle **pwrb_handle_basestd; 804 struct iscsi_wrb *plast_wrb; 805 unsigned short alloc_index; 806 unsigned short free_index; 807 unsigned short wrb_handles_available; 808 unsigned short cid; 809 }; 810 811 struct hwi_controller { 812 struct list_head io_sgl_list; 813 struct list_head eh_sgl_list; 814 struct sgl_handle *psgl_handle_base; 815 unsigned int wrb_mem_index; 816 817 struct hwi_wrb_context wrb_context[BE2_MAX_SESSIONS * 2]; 818 struct mcc_wrb *pmcc_wrb_base; 819 struct be_ring default_pdu_hdr; 820 struct be_ring default_pdu_data; 821 struct hwi_context_memory *phwi_ctxt; 822 }; 823 824 enum hwh_type_enum { 825 HWH_TYPE_IO = 1, 826 HWH_TYPE_LOGOUT = 2, 827 HWH_TYPE_TMF = 3, 828 HWH_TYPE_NOP = 4, 829 HWH_TYPE_IO_RD = 5, 830 HWH_TYPE_LOGIN = 11, 831 HWH_TYPE_INVALID = 0xFFFFFFFF 832 }; 833 834 struct wrb_handle { 835 enum hwh_type_enum type; 836 unsigned short wrb_index; 837 unsigned short nxt_wrb_index; 838 839 struct iscsi_task *pio_handle; 840 struct iscsi_wrb *pwrb; 841 }; 842 843 struct hwi_context_memory { 844 /* Adaptive interrupt coalescing (AIC) info */ 845 u16 min_eqd; /* in usecs */ 846 u16 max_eqd; /* in usecs */ 847 u16 cur_eqd; /* in usecs */ 848 struct be_eq_obj be_eq[MAX_CPUS]; 849 struct be_queue_info be_cq[MAX_CPUS]; 850 851 struct be_queue_info be_def_hdrq; 852 struct be_queue_info be_def_dataq; 853 854 struct be_queue_info be_wrbq[BE2_MAX_SESSIONS]; 855 struct be_mcc_wrb_context *pbe_mcc_context; 856 857 struct hwi_async_pdu_context *pasync_ctx; 858 }; 859 860 #endif 861