1 /** 2 * Copyright (C) 2005 - 2013 Emulex 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 (jayamohan.kallickal@emulex.com) 11 * 12 * Contact Information: 13 * linux-drivers@emulex.com 14 * 15 * Emulex 16 * 3333 Susan Street 17 * Costa Mesa, CA 92626 18 */ 19 20 #ifndef _BEISCSI_MAIN_ 21 #define _BEISCSI_MAIN_ 22 23 #include <linux/kernel.h> 24 #include <linux/pci.h> 25 #include <linux/if_ether.h> 26 #include <linux/in.h> 27 #include <linux/ctype.h> 28 #include <linux/module.h> 29 #include <linux/aer.h> 30 #include <scsi/scsi.h> 31 #include <scsi/scsi_cmnd.h> 32 #include <scsi/scsi_device.h> 33 #include <scsi/scsi_host.h> 34 #include <scsi/iscsi_proto.h> 35 #include <scsi/libiscsi.h> 36 #include <scsi/scsi_transport_iscsi.h> 37 38 #define DRV_NAME "be2iscsi" 39 #define BUILD_STR "10.2.273.0" 40 #define BE_NAME "Emulex OneConnect" \ 41 "Open-iSCSI Driver version" BUILD_STR 42 #define DRV_DESC BE_NAME " " "Driver" 43 44 #define BE_VENDOR_ID 0x19A2 45 #define ELX_VENDOR_ID 0x10DF 46 /* DEVICE ID's for BE2 */ 47 #define BE_DEVICE_ID1 0x212 48 #define OC_DEVICE_ID1 0x702 49 #define OC_DEVICE_ID2 0x703 50 51 /* DEVICE ID's for BE3 */ 52 #define BE_DEVICE_ID2 0x222 53 #define OC_DEVICE_ID3 0x712 54 55 /* DEVICE ID for SKH */ 56 #define OC_SKH_ID1 0x722 57 58 #define BE2_IO_DEPTH 1024 59 #define BE2_MAX_SESSIONS 256 60 #define BE2_CMDS_PER_CXN 128 61 #define BE2_TMFS 16 62 #define BE2_NOPOUT_REQ 16 63 #define BE2_SGE 32 64 #define BE2_DEFPDU_HDR_SZ 64 65 #define BE2_DEFPDU_DATA_SZ 8192 66 67 #define MAX_CPUS 64 68 #define BEISCSI_MAX_NUM_CPUS 7 69 70 #define BEISCSI_VER_STRLEN 32 71 72 #define BEISCSI_SGLIST_ELEMENTS 30 73 74 #define BEISCSI_CMD_PER_LUN 128 /* scsi_host->cmd_per_lun */ 75 #define BEISCSI_MAX_SECTORS 1024 /* scsi_host->max_sectors */ 76 #define BEISCSI_TEMPLATE_HDR_PER_CXN_SIZE 128 /* Template size per cxn */ 77 78 #define BEISCSI_MAX_CMD_LEN 16 /* scsi_host->max_cmd_len */ 79 #define BEISCSI_NUM_MAX_LUN 256 /* scsi_host->max_lun */ 80 #define BEISCSI_NUM_DEVICES_SUPPORTED 0x01 81 #define BEISCSI_MAX_FRAGS_INIT 192 82 #define BE_NUM_MSIX_ENTRIES 1 83 84 #define MPU_EP_CONTROL 0 85 #define MPU_EP_SEMAPHORE 0xac 86 #define BE2_SOFT_RESET 0x5c 87 #define BE2_PCI_ONLINE0 0xb0 88 #define BE2_PCI_ONLINE1 0xb4 89 #define BE2_SET_RESET 0x80 90 #define BE2_MPU_IRAM_ONLINE 0x00000080 91 92 #define BE_SENSE_INFO_SIZE 258 93 #define BE_ISCSI_PDU_HEADER_SIZE 64 94 #define BE_MIN_MEM_SIZE 16384 95 #define MAX_CMD_SZ 65536 96 #define IIOC_SCSI_DATA 0x05 /* Write Operation */ 97 98 #define INVALID_SESS_HANDLE 0xFFFFFFFF 99 100 /** 101 * Adapter States 102 **/ 103 #define BE_ADAPTER_LINK_UP 0x001 104 #define BE_ADAPTER_LINK_DOWN 0x002 105 #define BE_ADAPTER_PCI_ERR 0x004 106 #define BE_ADAPTER_STATE_SHUTDOWN 0x008 107 108 109 #define BEISCSI_CLEAN_UNLOAD 0x01 110 #define BEISCSI_EEH_UNLOAD 0x02 111 /** 112 * hardware needs the async PDU buffers to be posted in multiples of 8 113 * So have atleast 8 of them by default 114 */ 115 116 #define HWI_GET_ASYNC_PDU_CTX(phwi, ulp_num) \ 117 (phwi->phwi_ctxt->pasync_ctx[ulp_num]) 118 119 /********* Memory BAR register ************/ 120 #define PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET 0xfc 121 /** 122 * Host Interrupt Enable, if set interrupts are enabled although "PCI Interrupt 123 * Disable" may still globally block interrupts in addition to individual 124 * interrupt masks; a mechanism for the device driver to block all interrupts 125 * atomically without having to arbitrate for the PCI Interrupt Disable bit 126 * with the OS. 127 */ 128 #define MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK (1 << 29) /* bit 29 */ 129 130 /********* ISR0 Register offset **********/ 131 #define CEV_ISR0_OFFSET 0xC18 132 #define CEV_ISR_SIZE 4 133 134 /** 135 * Macros for reading/writing a protection domain or CSR registers 136 * in BladeEngine. 137 */ 138 139 #define DB_TXULP0_OFFSET 0x40 140 #define DB_RXULP0_OFFSET 0xA0 141 /********* Event Q door bell *************/ 142 #define DB_EQ_OFFSET DB_CQ_OFFSET 143 #define DB_EQ_RING_ID_LOW_MASK 0x1FF /* bits 0 - 8 */ 144 /* Clear the interrupt for this eq */ 145 #define DB_EQ_CLR_SHIFT (9) /* bit 9 */ 146 /* Must be 1 */ 147 #define DB_EQ_EVNT_SHIFT (10) /* bit 10 */ 148 /* Higher Order EQ_ID bit */ 149 #define DB_EQ_RING_ID_HIGH_MASK 0x1F /* bits 11 - 15 */ 150 #define DB_EQ_HIGH_SET_SHIFT 11 151 #define DB_EQ_HIGH_FEILD_SHIFT 9 152 /* Number of event entries processed */ 153 #define DB_EQ_NUM_POPPED_SHIFT (16) /* bits 16 - 28 */ 154 /* Rearm bit */ 155 #define DB_EQ_REARM_SHIFT (29) /* bit 29 */ 156 157 /********* Compl Q door bell *************/ 158 #define DB_CQ_OFFSET 0x120 159 #define DB_CQ_RING_ID_LOW_MASK 0x3FF /* bits 0 - 9 */ 160 /* Higher Order CQ_ID bit */ 161 #define DB_CQ_RING_ID_HIGH_MASK 0x1F /* bits 11 - 15 */ 162 #define DB_CQ_HIGH_SET_SHIFT 11 163 #define DB_CQ_HIGH_FEILD_SHIFT 10 164 165 /* Number of event entries processed */ 166 #define DB_CQ_NUM_POPPED_SHIFT (16) /* bits 16 - 28 */ 167 /* Rearm bit */ 168 #define DB_CQ_REARM_SHIFT (29) /* bit 29 */ 169 170 #define GET_HWI_CONTROLLER_WS(pc) (pc->phwi_ctrlr) 171 #define HWI_GET_DEF_BUFQ_ID(pc, ulp_num) (((struct hwi_controller *)\ 172 (GET_HWI_CONTROLLER_WS(pc)))->default_pdu_data[ulp_num].id) 173 #define HWI_GET_DEF_HDRQ_ID(pc, ulp_num) (((struct hwi_controller *)\ 174 (GET_HWI_CONTROLLER_WS(pc)))->default_pdu_hdr[ulp_num].id) 175 176 #define PAGES_REQUIRED(x) \ 177 ((x < PAGE_SIZE) ? 1 : ((x + PAGE_SIZE - 1) / PAGE_SIZE)) 178 179 #define BEISCSI_MSI_NAME 20 /* size of msi_name string */ 180 181 #define MEM_DESCR_OFFSET 8 182 #define BEISCSI_DEFQ_HDR 1 183 #define BEISCSI_DEFQ_DATA 0 184 enum be_mem_enum { 185 HWI_MEM_ADDN_CONTEXT, 186 HWI_MEM_WRB, 187 HWI_MEM_WRBH, 188 HWI_MEM_SGLH, 189 HWI_MEM_SGE, 190 HWI_MEM_TEMPLATE_HDR_ULP0, 191 HWI_MEM_ASYNC_HEADER_BUF_ULP0, /* 6 */ 192 HWI_MEM_ASYNC_DATA_BUF_ULP0, 193 HWI_MEM_ASYNC_HEADER_RING_ULP0, 194 HWI_MEM_ASYNC_DATA_RING_ULP0, 195 HWI_MEM_ASYNC_HEADER_HANDLE_ULP0, 196 HWI_MEM_ASYNC_DATA_HANDLE_ULP0, /* 11 */ 197 HWI_MEM_ASYNC_PDU_CONTEXT_ULP0, 198 HWI_MEM_TEMPLATE_HDR_ULP1, 199 HWI_MEM_ASYNC_HEADER_BUF_ULP1, /* 14 */ 200 HWI_MEM_ASYNC_DATA_BUF_ULP1, 201 HWI_MEM_ASYNC_HEADER_RING_ULP1, 202 HWI_MEM_ASYNC_DATA_RING_ULP1, 203 HWI_MEM_ASYNC_HEADER_HANDLE_ULP1, 204 HWI_MEM_ASYNC_DATA_HANDLE_ULP1, /* 19 */ 205 HWI_MEM_ASYNC_PDU_CONTEXT_ULP1, 206 ISCSI_MEM_GLOBAL_HEADER, 207 SE_MEM_MAX 208 }; 209 210 struct be_bus_address32 { 211 unsigned int address_lo; 212 unsigned int address_hi; 213 }; 214 215 struct be_bus_address64 { 216 unsigned long long address; 217 }; 218 219 struct be_bus_address { 220 union { 221 struct be_bus_address32 a32; 222 struct be_bus_address64 a64; 223 } u; 224 }; 225 226 struct mem_array { 227 struct be_bus_address bus_address; /* Bus address of location */ 228 void *virtual_address; /* virtual address to the location */ 229 unsigned int size; /* Size required by memory block */ 230 }; 231 232 struct be_mem_descriptor { 233 unsigned int index; /* Index of this memory parameter */ 234 unsigned int category; /* type indicates cached/non-cached */ 235 unsigned int num_elements; /* number of elements in this 236 * descriptor 237 */ 238 unsigned int alignment_mask; /* Alignment mask for this block */ 239 unsigned int size_in_bytes; /* Size required by memory block */ 240 struct mem_array *mem_array; 241 }; 242 243 struct sgl_handle { 244 unsigned int sgl_index; 245 unsigned int type; 246 unsigned int cid; 247 struct iscsi_task *task; 248 struct iscsi_sge *pfrag; 249 }; 250 251 struct hba_parameters { 252 unsigned int ios_per_ctrl; 253 unsigned int cxns_per_ctrl; 254 unsigned int asyncpdus_per_ctrl; 255 unsigned int icds_per_ctrl; 256 unsigned int num_sge_per_io; 257 unsigned int defpdu_hdr_sz; 258 unsigned int defpdu_data_sz; 259 unsigned int num_cq_entries; 260 unsigned int num_eq_entries; 261 unsigned int wrbs_per_cxn; 262 unsigned int crashmode; 263 unsigned int hba_num; 264 265 unsigned int mgmt_ws_sz; 266 unsigned int hwi_ws_sz; 267 268 unsigned int eto; 269 unsigned int ldto; 270 271 unsigned int dbg_flags; 272 unsigned int num_cxn; 273 274 unsigned int eq_timer; 275 /** 276 * These are calculated from other params. They're here 277 * for debug purposes 278 */ 279 unsigned int num_mcc_pages; 280 unsigned int num_mcc_cq_pages; 281 unsigned int num_cq_pages; 282 unsigned int num_eq_pages; 283 284 unsigned int num_async_pdu_buf_pages; 285 unsigned int num_async_pdu_buf_sgl_pages; 286 unsigned int num_async_pdu_buf_cq_pages; 287 288 unsigned int num_async_pdu_hdr_pages; 289 unsigned int num_async_pdu_hdr_sgl_pages; 290 unsigned int num_async_pdu_hdr_cq_pages; 291 292 unsigned int num_sge; 293 }; 294 295 struct invalidate_command_table { 296 unsigned short icd; 297 unsigned short cid; 298 } __packed; 299 300 #define BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr, cri) \ 301 (phwi_ctrlr->wrb_context[cri].ulp_num) 302 struct hwi_wrb_context { 303 struct list_head wrb_handle_list; 304 struct list_head wrb_handle_drvr_list; 305 struct wrb_handle **pwrb_handle_base; 306 struct wrb_handle **pwrb_handle_basestd; 307 struct iscsi_wrb *plast_wrb; 308 unsigned short alloc_index; 309 unsigned short free_index; 310 unsigned short wrb_handles_available; 311 unsigned short cid; 312 uint8_t ulp_num; /* ULP to which CID binded */ 313 uint16_t register_set; 314 uint16_t doorbell_format; 315 uint32_t doorbell_offset; 316 }; 317 318 struct ulp_cid_info { 319 unsigned short *cid_array; 320 unsigned short avlbl_cids; 321 unsigned short cid_alloc; 322 unsigned short cid_free; 323 }; 324 325 #include "be.h" 326 #define chip_be2(phba) (phba->generation == BE_GEN2) 327 #define chip_be3_r(phba) (phba->generation == BE_GEN3) 328 #define is_chip_be2_be3r(phba) (chip_be3_r(phba) || (chip_be2(phba))) 329 330 #define BEISCSI_ULP0 0 331 #define BEISCSI_ULP1 1 332 #define BEISCSI_ULP_COUNT 2 333 #define BEISCSI_ULP0_LOADED 0x01 334 #define BEISCSI_ULP1_LOADED 0x02 335 336 #define BEISCSI_ULP_AVLBL_CID(phba, ulp_num) \ 337 (((struct ulp_cid_info *)phba->cid_array_info[ulp_num])->avlbl_cids) 338 #define BEISCSI_ULP0_AVLBL_CID(phba) \ 339 BEISCSI_ULP_AVLBL_CID(phba, BEISCSI_ULP0) 340 #define BEISCSI_ULP1_AVLBL_CID(phba) \ 341 BEISCSI_ULP_AVLBL_CID(phba, BEISCSI_ULP1) 342 343 struct beiscsi_hba { 344 struct hba_parameters params; 345 struct hwi_controller *phwi_ctrlr; 346 unsigned int mem_req[SE_MEM_MAX]; 347 /* PCI BAR mapped addresses */ 348 u8 __iomem *csr_va; /* CSR */ 349 u8 __iomem *db_va; /* Door Bell */ 350 u8 __iomem *pci_va; /* PCI Config */ 351 struct be_bus_address csr_pa; /* CSR */ 352 struct be_bus_address db_pa; /* CSR */ 353 struct be_bus_address pci_pa; /* CSR */ 354 /* PCI representation of our HBA */ 355 struct pci_dev *pcidev; 356 unsigned short asic_revision; 357 unsigned int num_cpus; 358 unsigned int nxt_cqid; 359 struct msix_entry msix_entries[MAX_CPUS]; 360 char *msi_name[MAX_CPUS]; 361 bool msix_enabled; 362 struct be_mem_descriptor *init_mem; 363 364 unsigned short io_sgl_alloc_index; 365 unsigned short io_sgl_free_index; 366 unsigned short io_sgl_hndl_avbl; 367 struct sgl_handle **io_sgl_hndl_base; 368 struct sgl_handle **sgl_hndl_array; 369 370 unsigned short eh_sgl_alloc_index; 371 unsigned short eh_sgl_free_index; 372 unsigned short eh_sgl_hndl_avbl; 373 struct sgl_handle **eh_sgl_hndl_base; 374 spinlock_t io_sgl_lock; 375 spinlock_t mgmt_sgl_lock; 376 spinlock_t isr_lock; 377 spinlock_t async_pdu_lock; 378 unsigned int age; 379 struct list_head hba_queue; 380 #define BE_MAX_SESSION 2048 381 #define BE_SET_CID_TO_CRI(cri_index, cid) \ 382 (phba->cid_to_cri_map[cid] = cri_index) 383 #define BE_GET_CRI_FROM_CID(cid) (phba->cid_to_cri_map[cid]) 384 unsigned short cid_to_cri_map[BE_MAX_SESSION]; 385 struct ulp_cid_info *cid_array_info[BEISCSI_ULP_COUNT]; 386 struct iscsi_endpoint **ep_array; 387 struct beiscsi_conn **conn_table; 388 struct iscsi_boot_kset *boot_kset; 389 struct Scsi_Host *shost; 390 struct iscsi_iface *ipv4_iface; 391 struct iscsi_iface *ipv6_iface; 392 struct { 393 /** 394 * group together since they are used most frequently 395 * for cid to cri conversion 396 */ 397 unsigned int phys_port; 398 unsigned int eqid_count; 399 unsigned int cqid_count; 400 unsigned int iscsi_cid_start[BEISCSI_ULP_COUNT]; 401 #define BEISCSI_GET_CID_COUNT(phba, ulp_num) \ 402 (phba->fw_config.iscsi_cid_count[ulp_num]) 403 unsigned int iscsi_cid_count[BEISCSI_ULP_COUNT]; 404 unsigned int iscsi_icd_count[BEISCSI_ULP_COUNT]; 405 unsigned int iscsi_icd_start[BEISCSI_ULP_COUNT]; 406 unsigned int iscsi_chain_start[BEISCSI_ULP_COUNT]; 407 unsigned int iscsi_chain_count[BEISCSI_ULP_COUNT]; 408 409 unsigned short iscsi_features; 410 uint16_t dual_ulp_aware; 411 unsigned long ulp_supported; 412 } fw_config; 413 414 unsigned int state; 415 bool fw_timeout; 416 bool ue_detected; 417 struct delayed_work beiscsi_hw_check_task; 418 419 bool mac_addr_set; 420 u8 mac_address[ETH_ALEN]; 421 char fw_ver_str[BEISCSI_VER_STRLEN]; 422 char wq_name[20]; 423 struct workqueue_struct *wq; /* The actuak work queue */ 424 struct be_ctrl_info ctrl; 425 unsigned int generation; 426 unsigned int interface_handle; 427 struct mgmt_session_info boot_sess; 428 struct invalidate_command_table inv_tbl[128]; 429 430 struct be_aic_obj aic_obj[MAX_CPUS]; 431 unsigned int attr_log_enable; 432 int (*iotask_fn)(struct iscsi_task *, 433 struct scatterlist *sg, 434 uint32_t num_sg, uint32_t xferlen, 435 uint32_t writedir); 436 }; 437 438 struct beiscsi_session { 439 struct pci_pool *bhs_pool; 440 }; 441 442 /** 443 * struct beiscsi_conn - iscsi connection structure 444 */ 445 struct beiscsi_conn { 446 struct iscsi_conn *conn; 447 struct beiscsi_hba *phba; 448 u32 exp_statsn; 449 u32 doorbell_offset; 450 u32 beiscsi_conn_cid; 451 struct beiscsi_endpoint *ep; 452 unsigned short login_in_progress; 453 struct wrb_handle *plogin_wrb_handle; 454 struct sgl_handle *plogin_sgl_handle; 455 struct beiscsi_session *beiscsi_sess; 456 struct iscsi_task *task; 457 }; 458 459 /* This structure is used by the chip */ 460 struct pdu_data_out { 461 u32 dw[12]; 462 }; 463 /** 464 * Pseudo amap definition in which each bit of the actual structure is defined 465 * as a byte: used to calculate offset/shift/mask of each field 466 */ 467 struct amap_pdu_data_out { 468 u8 opcode[6]; /* opcode */ 469 u8 rsvd0[2]; /* should be 0 */ 470 u8 rsvd1[7]; 471 u8 final_bit; /* F bit */ 472 u8 rsvd2[16]; 473 u8 ahs_length[8]; /* no AHS */ 474 u8 data_len_hi[8]; 475 u8 data_len_lo[16]; /* DataSegmentLength */ 476 u8 lun[64]; 477 u8 itt[32]; /* ITT; initiator task tag */ 478 u8 ttt[32]; /* TTT; valid for R2T or 0xffffffff */ 479 u8 rsvd3[32]; 480 u8 exp_stat_sn[32]; 481 u8 rsvd4[32]; 482 u8 data_sn[32]; 483 u8 buffer_offset[32]; 484 u8 rsvd5[32]; 485 }; 486 487 struct be_cmd_bhs { 488 struct iscsi_scsi_req iscsi_hdr; 489 unsigned char pad1[16]; 490 struct pdu_data_out iscsi_data_pdu; 491 unsigned char pad2[BE_SENSE_INFO_SIZE - 492 sizeof(struct pdu_data_out)]; 493 }; 494 495 struct beiscsi_io_task { 496 struct wrb_handle *pwrb_handle; 497 struct sgl_handle *psgl_handle; 498 struct beiscsi_conn *conn; 499 struct scsi_cmnd *scsi_cmnd; 500 unsigned int cmd_sn; 501 unsigned int flags; 502 unsigned short cid; 503 unsigned short header_len; 504 itt_t libiscsi_itt; 505 struct be_cmd_bhs *cmd_bhs; 506 struct be_bus_address bhs_pa; 507 unsigned short bhs_len; 508 dma_addr_t mtask_addr; 509 uint32_t mtask_data_count; 510 uint8_t wrb_type; 511 }; 512 513 struct be_nonio_bhs { 514 struct iscsi_hdr iscsi_hdr; 515 unsigned char pad1[16]; 516 struct pdu_data_out iscsi_data_pdu; 517 unsigned char pad2[BE_SENSE_INFO_SIZE - 518 sizeof(struct pdu_data_out)]; 519 }; 520 521 struct be_status_bhs { 522 struct iscsi_scsi_req iscsi_hdr; 523 unsigned char pad1[16]; 524 /** 525 * The plus 2 below is to hold the sense info length that gets 526 * DMA'ed by RxULP 527 */ 528 unsigned char sense_info[BE_SENSE_INFO_SIZE]; 529 }; 530 531 struct iscsi_sge { 532 u32 dw[4]; 533 }; 534 535 /** 536 * Pseudo amap definition in which each bit of the actual structure is defined 537 * as a byte: used to calculate offset/shift/mask of each field 538 */ 539 struct amap_iscsi_sge { 540 u8 addr_hi[32]; 541 u8 addr_lo[32]; 542 u8 sge_offset[22]; /* DWORD 2 */ 543 u8 rsvd0[9]; /* DWORD 2 */ 544 u8 last_sge; /* DWORD 2 */ 545 u8 len[17]; /* DWORD 3 */ 546 u8 rsvd1[15]; /* DWORD 3 */ 547 }; 548 549 struct beiscsi_offload_params { 550 u32 dw[6]; 551 }; 552 553 #define OFFLD_PARAMS_ERL 0x00000003 554 #define OFFLD_PARAMS_DDE 0x00000004 555 #define OFFLD_PARAMS_HDE 0x00000008 556 #define OFFLD_PARAMS_IR2T 0x00000010 557 #define OFFLD_PARAMS_IMD 0x00000020 558 #define OFFLD_PARAMS_DATA_SEQ_INORDER 0x00000040 559 #define OFFLD_PARAMS_PDU_SEQ_INORDER 0x00000080 560 #define OFFLD_PARAMS_MAX_R2T 0x00FFFF00 561 562 /** 563 * Pseudo amap definition in which each bit of the actual structure is defined 564 * as a byte: used to calculate offset/shift/mask of each field 565 */ 566 struct amap_beiscsi_offload_params { 567 u8 max_burst_length[32]; 568 u8 max_send_data_segment_length[32]; 569 u8 first_burst_length[32]; 570 u8 erl[2]; 571 u8 dde[1]; 572 u8 hde[1]; 573 u8 ir2t[1]; 574 u8 imd[1]; 575 u8 data_seq_inorder[1]; 576 u8 pdu_seq_inorder[1]; 577 u8 max_r2t[16]; 578 u8 pad[8]; 579 u8 exp_statsn[32]; 580 u8 max_recv_data_segment_length[32]; 581 }; 582 583 /* void hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn, 584 struct beiscsi_hba *phba, struct sol_cqe *psol);*/ 585 586 struct async_pdu_handle { 587 struct list_head link; 588 struct be_bus_address pa; 589 void *pbuffer; 590 unsigned int consumed; 591 unsigned char index; 592 unsigned char is_header; 593 unsigned short cri; 594 unsigned long buffer_len; 595 }; 596 597 struct hwi_async_entry { 598 struct { 599 unsigned char hdr_received; 600 unsigned char hdr_len; 601 unsigned short bytes_received; 602 unsigned int bytes_needed; 603 struct list_head list; 604 } wait_queue; 605 606 struct list_head header_busy_list; 607 struct list_head data_busy_list; 608 }; 609 610 struct hwi_async_pdu_context { 611 struct { 612 struct be_bus_address pa_base; 613 void *va_base; 614 void *ring_base; 615 struct async_pdu_handle *handle_base; 616 617 unsigned int host_write_ptr; 618 unsigned int ep_read_ptr; 619 unsigned int writables; 620 621 unsigned int free_entries; 622 unsigned int busy_entries; 623 624 struct list_head free_list; 625 } async_header; 626 627 struct { 628 struct be_bus_address pa_base; 629 void *va_base; 630 void *ring_base; 631 struct async_pdu_handle *handle_base; 632 633 unsigned int host_write_ptr; 634 unsigned int ep_read_ptr; 635 unsigned int writables; 636 637 unsigned int free_entries; 638 unsigned int busy_entries; 639 struct list_head free_list; 640 } async_data; 641 642 unsigned int buffer_size; 643 unsigned int num_entries; 644 #define BE_GET_ASYNC_CRI_FROM_CID(cid) (pasync_ctx->cid_to_async_cri_map[cid]) 645 unsigned short cid_to_async_cri_map[BE_MAX_SESSION]; 646 /** 647 * This is a varying size list! Do not add anything 648 * after this entry!! 649 */ 650 struct hwi_async_entry *async_entry; 651 }; 652 653 #define PDUCQE_CODE_MASK 0x0000003F 654 #define PDUCQE_DPL_MASK 0xFFFF0000 655 #define PDUCQE_INDEX_MASK 0x0000FFFF 656 657 struct i_t_dpdu_cqe { 658 u32 dw[4]; 659 } __packed; 660 661 /** 662 * Pseudo amap definition in which each bit of the actual structure is defined 663 * as a byte: used to calculate offset/shift/mask of each field 664 */ 665 struct amap_i_t_dpdu_cqe { 666 u8 db_addr_hi[32]; 667 u8 db_addr_lo[32]; 668 u8 code[6]; 669 u8 cid[10]; 670 u8 dpl[16]; 671 u8 index[16]; 672 u8 num_cons[10]; 673 u8 rsvd0[4]; 674 u8 final; 675 u8 valid; 676 } __packed; 677 678 struct amap_i_t_dpdu_cqe_v2 { 679 u8 db_addr_hi[32]; /* DWORD 0 */ 680 u8 db_addr_lo[32]; /* DWORD 1 */ 681 u8 code[6]; /* DWORD 2 */ 682 u8 num_cons; /* DWORD 2*/ 683 u8 rsvd0[8]; /* DWORD 2 */ 684 u8 dpl[17]; /* DWORD 2 */ 685 u8 index[16]; /* DWORD 3 */ 686 u8 cid[13]; /* DWORD 3 */ 687 u8 rsvd1; /* DWORD 3 */ 688 u8 final; /* DWORD 3 */ 689 u8 valid; /* DWORD 3 */ 690 } __packed; 691 692 #define CQE_VALID_MASK 0x80000000 693 #define CQE_CODE_MASK 0x0000003F 694 #define CQE_CID_MASK 0x0000FFC0 695 696 #define EQE_VALID_MASK 0x00000001 697 #define EQE_MAJORCODE_MASK 0x0000000E 698 #define EQE_RESID_MASK 0xFFFF0000 699 700 struct be_eq_entry { 701 u32 dw[1]; 702 } __packed; 703 704 /** 705 * Pseudo amap definition in which each bit of the actual structure is defined 706 * as a byte: used to calculate offset/shift/mask of each field 707 */ 708 struct amap_eq_entry { 709 u8 valid; /* DWORD 0 */ 710 u8 major_code[3]; /* DWORD 0 */ 711 u8 minor_code[12]; /* DWORD 0 */ 712 u8 resource_id[16]; /* DWORD 0 */ 713 714 } __packed; 715 716 struct cq_db { 717 u32 dw[1]; 718 } __packed; 719 720 /** 721 * Pseudo amap definition in which each bit of the actual structure is defined 722 * as a byte: used to calculate offset/shift/mask of each field 723 */ 724 struct amap_cq_db { 725 u8 qid[10]; 726 u8 event[1]; 727 u8 rsvd0[5]; 728 u8 num_popped[13]; 729 u8 rearm[1]; 730 u8 rsvd1[2]; 731 } __packed; 732 733 void beiscsi_process_eq(struct beiscsi_hba *phba); 734 735 struct iscsi_wrb { 736 u32 dw[16]; 737 } __packed; 738 739 #define WRB_TYPE_MASK 0xF0000000 740 #define SKH_WRB_TYPE_OFFSET 27 741 #define BE_WRB_TYPE_OFFSET 28 742 743 #define ADAPTER_SET_WRB_TYPE(pwrb, wrb_type, type_offset) \ 744 (pwrb->dw[0] |= (wrb_type << type_offset)) 745 746 /** 747 * Pseudo amap definition in which each bit of the actual structure is defined 748 * as a byte: used to calculate offset/shift/mask of each field 749 */ 750 struct amap_iscsi_wrb { 751 u8 lun[14]; /* DWORD 0 */ 752 u8 lt; /* DWORD 0 */ 753 u8 invld; /* DWORD 0 */ 754 u8 wrb_idx[8]; /* DWORD 0 */ 755 u8 dsp; /* DWORD 0 */ 756 u8 dmsg; /* DWORD 0 */ 757 u8 undr_run; /* DWORD 0 */ 758 u8 over_run; /* DWORD 0 */ 759 u8 type[4]; /* DWORD 0 */ 760 u8 ptr2nextwrb[8]; /* DWORD 1 */ 761 u8 r2t_exp_dtl[24]; /* DWORD 1 */ 762 u8 sgl_icd_idx[12]; /* DWORD 2 */ 763 u8 rsvd0[20]; /* DWORD 2 */ 764 u8 exp_data_sn[32]; /* DWORD 3 */ 765 u8 iscsi_bhs_addr_hi[32]; /* DWORD 4 */ 766 u8 iscsi_bhs_addr_lo[32]; /* DWORD 5 */ 767 u8 cmdsn_itt[32]; /* DWORD 6 */ 768 u8 dif_ref_tag[32]; /* DWORD 7 */ 769 u8 sge0_addr_hi[32]; /* DWORD 8 */ 770 u8 sge0_addr_lo[32]; /* DWORD 9 */ 771 u8 sge0_offset[22]; /* DWORD 10 */ 772 u8 pbs; /* DWORD 10 */ 773 u8 dif_mode[2]; /* DWORD 10 */ 774 u8 rsvd1[6]; /* DWORD 10 */ 775 u8 sge0_last; /* DWORD 10 */ 776 u8 sge0_len[17]; /* DWORD 11 */ 777 u8 dif_meta_tag[14]; /* DWORD 11 */ 778 u8 sge0_in_ddr; /* DWORD 11 */ 779 u8 sge1_addr_hi[32]; /* DWORD 12 */ 780 u8 sge1_addr_lo[32]; /* DWORD 13 */ 781 u8 sge1_r2t_offset[22]; /* DWORD 14 */ 782 u8 rsvd2[9]; /* DWORD 14 */ 783 u8 sge1_last; /* DWORD 14 */ 784 u8 sge1_len[17]; /* DWORD 15 */ 785 u8 ref_sgl_icd_idx[12]; /* DWORD 15 */ 786 u8 rsvd3[2]; /* DWORD 15 */ 787 u8 sge1_in_ddr; /* DWORD 15 */ 788 789 } __packed; 790 791 struct amap_iscsi_wrb_v2 { 792 u8 r2t_exp_dtl[25]; /* DWORD 0 */ 793 u8 rsvd0[2]; /* DWORD 0*/ 794 u8 type[5]; /* DWORD 0 */ 795 u8 ptr2nextwrb[8]; /* DWORD 1 */ 796 u8 wrb_idx[8]; /* DWORD 1 */ 797 u8 lun[16]; /* DWORD 1 */ 798 u8 sgl_idx[16]; /* DWORD 2 */ 799 u8 ref_sgl_icd_idx[16]; /* DWORD 2 */ 800 u8 exp_data_sn[32]; /* DWORD 3 */ 801 u8 iscsi_bhs_addr_hi[32]; /* DWORD 4 */ 802 u8 iscsi_bhs_addr_lo[32]; /* DWORD 5 */ 803 u8 cq_id[16]; /* DWORD 6 */ 804 u8 rsvd1[16]; /* DWORD 6 */ 805 u8 cmdsn_itt[32]; /* DWORD 7 */ 806 u8 sge0_addr_hi[32]; /* DWORD 8 */ 807 u8 sge0_addr_lo[32]; /* DWORD 9 */ 808 u8 sge0_offset[24]; /* DWORD 10 */ 809 u8 rsvd2[7]; /* DWORD 10 */ 810 u8 sge0_last; /* DWORD 10 */ 811 u8 sge0_len[17]; /* DWORD 11 */ 812 u8 rsvd3[7]; /* DWORD 11 */ 813 u8 diff_enbl; /* DWORD 11 */ 814 u8 u_run; /* DWORD 11 */ 815 u8 o_run; /* DWORD 11 */ 816 u8 invalid; /* DWORD 11 */ 817 u8 dsp; /* DWORD 11 */ 818 u8 dmsg; /* DWORD 11 */ 819 u8 rsvd4; /* DWORD 11 */ 820 u8 lt; /* DWORD 11 */ 821 u8 sge1_addr_hi[32]; /* DWORD 12 */ 822 u8 sge1_addr_lo[32]; /* DWORD 13 */ 823 u8 sge1_r2t_offset[24]; /* DWORD 14 */ 824 u8 rsvd5[7]; /* DWORD 14 */ 825 u8 sge1_last; /* DWORD 14 */ 826 u8 sge1_len[17]; /* DWORD 15 */ 827 u8 rsvd6[15]; /* DWORD 15 */ 828 } __packed; 829 830 831 struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid); 832 void 833 free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle); 834 835 void beiscsi_process_all_cqs(struct work_struct *work); 836 void beiscsi_free_mgmt_task_handles(struct beiscsi_conn *beiscsi_conn, 837 struct iscsi_task *task); 838 839 void hwi_ring_cq_db(struct beiscsi_hba *phba, 840 unsigned int id, unsigned int num_processed, 841 unsigned char rearm, unsigned char event); 842 static inline bool beiscsi_error(struct beiscsi_hba *phba) 843 { 844 return phba->ue_detected || phba->fw_timeout; 845 } 846 847 struct pdu_nop_out { 848 u32 dw[12]; 849 }; 850 851 /** 852 * Pseudo amap definition in which each bit of the actual structure is defined 853 * as a byte: used to calculate offset/shift/mask of each field 854 */ 855 struct amap_pdu_nop_out { 856 u8 opcode[6]; /* opcode 0x00 */ 857 u8 i_bit; /* I Bit */ 858 u8 x_bit; /* reserved; should be 0 */ 859 u8 fp_bit_filler1[7]; 860 u8 f_bit; /* always 1 */ 861 u8 reserved1[16]; 862 u8 ahs_length[8]; /* no AHS */ 863 u8 data_len_hi[8]; 864 u8 data_len_lo[16]; /* DataSegmentLength */ 865 u8 lun[64]; 866 u8 itt[32]; /* initiator id for ping or 0xffffffff */ 867 u8 ttt[32]; /* target id for ping or 0xffffffff */ 868 u8 cmd_sn[32]; 869 u8 exp_stat_sn[32]; 870 u8 reserved5[128]; 871 }; 872 873 #define PDUBASE_OPCODE_MASK 0x0000003F 874 #define PDUBASE_DATALENHI_MASK 0x0000FF00 875 #define PDUBASE_DATALENLO_MASK 0xFFFF0000 876 877 struct pdu_base { 878 u32 dw[16]; 879 } __packed; 880 881 /** 882 * Pseudo amap definition in which each bit of the actual structure is defined 883 * as a byte: used to calculate offset/shift/mask of each field 884 */ 885 struct amap_pdu_base { 886 u8 opcode[6]; 887 u8 i_bit; /* immediate bit */ 888 u8 x_bit; /* reserved, always 0 */ 889 u8 reserved1[24]; /* opcode-specific fields */ 890 u8 ahs_length[8]; /* length units is 4 byte words */ 891 u8 data_len_hi[8]; 892 u8 data_len_lo[16]; /* DatasegmentLength */ 893 u8 lun[64]; /* lun or opcode-specific fields */ 894 u8 itt[32]; /* initiator task tag */ 895 u8 reserved4[224]; 896 }; 897 898 struct iscsi_target_context_update_wrb { 899 u32 dw[16]; 900 } __packed; 901 902 /** 903 * Pseudo amap definition in which each bit of the actual structure is defined 904 * as a byte: used to calculate offset/shift/mask of each field 905 */ 906 #define BE_TGT_CTX_UPDT_CMD 0x07 907 struct amap_iscsi_target_context_update_wrb { 908 u8 lun[14]; /* DWORD 0 */ 909 u8 lt; /* DWORD 0 */ 910 u8 invld; /* DWORD 0 */ 911 u8 wrb_idx[8]; /* DWORD 0 */ 912 u8 dsp; /* DWORD 0 */ 913 u8 dmsg; /* DWORD 0 */ 914 u8 undr_run; /* DWORD 0 */ 915 u8 over_run; /* DWORD 0 */ 916 u8 type[4]; /* DWORD 0 */ 917 u8 ptr2nextwrb[8]; /* DWORD 1 */ 918 u8 max_burst_length[19]; /* DWORD 1 */ 919 u8 rsvd0[5]; /* DWORD 1 */ 920 u8 rsvd1[15]; /* DWORD 2 */ 921 u8 max_send_data_segment_length[17]; /* DWORD 2 */ 922 u8 first_burst_length[14]; /* DWORD 3 */ 923 u8 rsvd2[2]; /* DWORD 3 */ 924 u8 tx_wrbindex_drv_msg[8]; /* DWORD 3 */ 925 u8 rsvd3[5]; /* DWORD 3 */ 926 u8 session_state[3]; /* DWORD 3 */ 927 u8 rsvd4[16]; /* DWORD 4 */ 928 u8 tx_jumbo; /* DWORD 4 */ 929 u8 hde; /* DWORD 4 */ 930 u8 dde; /* DWORD 4 */ 931 u8 erl[2]; /* DWORD 4 */ 932 u8 domain_id[5]; /* DWORD 4 */ 933 u8 mode; /* DWORD 4 */ 934 u8 imd; /* DWORD 4 */ 935 u8 ir2t; /* DWORD 4 */ 936 u8 notpredblq[2]; /* DWORD 4 */ 937 u8 compltonack; /* DWORD 4 */ 938 u8 stat_sn[32]; /* DWORD 5 */ 939 u8 pad_buffer_addr_hi[32]; /* DWORD 6 */ 940 u8 pad_buffer_addr_lo[32]; /* DWORD 7 */ 941 u8 pad_addr_hi[32]; /* DWORD 8 */ 942 u8 pad_addr_lo[32]; /* DWORD 9 */ 943 u8 rsvd5[32]; /* DWORD 10 */ 944 u8 rsvd6[32]; /* DWORD 11 */ 945 u8 rsvd7[32]; /* DWORD 12 */ 946 u8 rsvd8[32]; /* DWORD 13 */ 947 u8 rsvd9[32]; /* DWORD 14 */ 948 u8 rsvd10[32]; /* DWORD 15 */ 949 950 } __packed; 951 952 #define BEISCSI_MAX_RECV_DATASEG_LEN (64 * 1024) 953 #define BEISCSI_MAX_CXNS 1 954 struct amap_iscsi_target_context_update_wrb_v2 { 955 u8 max_burst_length[24]; /* DWORD 0 */ 956 u8 rsvd0[3]; /* DWORD 0 */ 957 u8 type[5]; /* DWORD 0 */ 958 u8 ptr2nextwrb[8]; /* DWORD 1 */ 959 u8 wrb_idx[8]; /* DWORD 1 */ 960 u8 rsvd1[16]; /* DWORD 1 */ 961 u8 max_send_data_segment_length[24]; /* DWORD 2 */ 962 u8 rsvd2[8]; /* DWORD 2 */ 963 u8 first_burst_length[24]; /* DWORD 3 */ 964 u8 rsvd3[8]; /* DOWRD 3 */ 965 u8 max_r2t[16]; /* DWORD 4 */ 966 u8 rsvd4; /* DWORD 4 */ 967 u8 hde; /* DWORD 4 */ 968 u8 dde; /* DWORD 4 */ 969 u8 erl[2]; /* DWORD 4 */ 970 u8 rsvd5[6]; /* DWORD 4 */ 971 u8 imd; /* DWORD 4 */ 972 u8 ir2t; /* DWORD 4 */ 973 u8 rsvd6[3]; /* DWORD 4 */ 974 u8 stat_sn[32]; /* DWORD 5 */ 975 u8 rsvd7[32]; /* DWORD 6 */ 976 u8 rsvd8[32]; /* DWORD 7 */ 977 u8 max_recv_dataseg_len[24]; /* DWORD 8 */ 978 u8 rsvd9[8]; /* DWORD 8 */ 979 u8 rsvd10[32]; /* DWORD 9 */ 980 u8 rsvd11[32]; /* DWORD 10 */ 981 u8 max_cxns[16]; /* DWORD 11 */ 982 u8 rsvd12[11]; /* DWORD 11*/ 983 u8 invld; /* DWORD 11 */ 984 u8 rsvd13;/* DWORD 11*/ 985 u8 dmsg; /* DWORD 11 */ 986 u8 data_seq_inorder; /* DWORD 11 */ 987 u8 pdu_seq_inorder; /* DWORD 11 */ 988 u8 rsvd14[32]; /*DWORD 12 */ 989 u8 rsvd15[32]; /* DWORD 13 */ 990 u8 rsvd16[32]; /* DWORD 14 */ 991 u8 rsvd17[32]; /* DWORD 15 */ 992 } __packed; 993 994 995 struct be_ring { 996 u32 pages; /* queue size in pages */ 997 u32 id; /* queue id assigned by beklib */ 998 u32 num; /* number of elements in queue */ 999 u32 cidx; /* consumer index */ 1000 u32 pidx; /* producer index -- not used by most rings */ 1001 u32 item_size; /* size in bytes of one object */ 1002 u8 ulp_num; /* ULP to which CID binded */ 1003 u16 register_set; 1004 u16 doorbell_format; 1005 u32 doorbell_offset; 1006 1007 void *va; /* The virtual address of the ring. This 1008 * should be last to allow 32 & 64 bit debugger 1009 * extensions to work. 1010 */ 1011 }; 1012 1013 struct hwi_controller { 1014 struct list_head io_sgl_list; 1015 struct list_head eh_sgl_list; 1016 struct sgl_handle *psgl_handle_base; 1017 unsigned int wrb_mem_index; 1018 1019 struct hwi_wrb_context *wrb_context; 1020 struct mcc_wrb *pmcc_wrb_base; 1021 struct be_ring default_pdu_hdr[BEISCSI_ULP_COUNT]; 1022 struct be_ring default_pdu_data[BEISCSI_ULP_COUNT]; 1023 struct hwi_context_memory *phwi_ctxt; 1024 }; 1025 1026 enum hwh_type_enum { 1027 HWH_TYPE_IO = 1, 1028 HWH_TYPE_LOGOUT = 2, 1029 HWH_TYPE_TMF = 3, 1030 HWH_TYPE_NOP = 4, 1031 HWH_TYPE_IO_RD = 5, 1032 HWH_TYPE_LOGIN = 11, 1033 HWH_TYPE_INVALID = 0xFFFFFFFF 1034 }; 1035 1036 struct wrb_handle { 1037 enum hwh_type_enum type; 1038 unsigned short wrb_index; 1039 unsigned short nxt_wrb_index; 1040 1041 struct iscsi_task *pio_handle; 1042 struct iscsi_wrb *pwrb; 1043 }; 1044 1045 struct hwi_context_memory { 1046 /* Adaptive interrupt coalescing (AIC) info */ 1047 u16 min_eqd; /* in usecs */ 1048 u16 max_eqd; /* in usecs */ 1049 u16 cur_eqd; /* in usecs */ 1050 struct be_eq_obj be_eq[MAX_CPUS]; 1051 struct be_queue_info be_cq[MAX_CPUS - 1]; 1052 1053 struct be_queue_info *be_wrbq; 1054 struct be_queue_info be_def_hdrq[BEISCSI_ULP_COUNT]; 1055 struct be_queue_info be_def_dataq[BEISCSI_ULP_COUNT]; 1056 struct hwi_async_pdu_context *pasync_ctx[BEISCSI_ULP_COUNT]; 1057 }; 1058 1059 /* Logging related definitions */ 1060 #define BEISCSI_LOG_INIT 0x0001 /* Initialization events */ 1061 #define BEISCSI_LOG_MBOX 0x0002 /* Mailbox Events */ 1062 #define BEISCSI_LOG_MISC 0x0004 /* Miscllaneous Events */ 1063 #define BEISCSI_LOG_EH 0x0008 /* Error Handler */ 1064 #define BEISCSI_LOG_IO 0x0010 /* IO Code Path */ 1065 #define BEISCSI_LOG_CONFIG 0x0020 /* CONFIG Code Path */ 1066 #define BEISCSI_LOG_ISCSI 0x0040 /* SCSI/iSCSI Protocol related Logs */ 1067 1068 #define beiscsi_log(phba, level, mask, fmt, arg...) \ 1069 do { \ 1070 uint32_t log_value = phba->attr_log_enable; \ 1071 if (((mask) & log_value) || (level[1] <= '3')) \ 1072 shost_printk(level, phba->shost, \ 1073 fmt, __LINE__, ##arg); \ 1074 } while (0) 1075 1076 #endif 1077