1/* fc.c: Generic Fibre Channel and FC4 SCSI driver. 2 * 3 * Copyright (C) 1997,1998,1999 Jakub Jelinek (jj@ultra.linux.cz) 4 * Copyright (C) 1997,1998 Jirka Hanika (geo@ff.cuni.cz) 5 * 6 * There are two kinds of Fibre Channel adapters used in Linux. Either 7 * the adapter is "smart" and does all FC bookkeeping by itself and 8 * just presents a standard SCSI interface to the operating system 9 * (that's e.g. the case with Qlogic FC cards), or leaves most of the FC 10 * bookkeeping to the OS (e.g. soc, socal). Drivers for the former adapters 11 * will look like normal SCSI drivers (with the exception of max_id will be 12 * usually 127), the latter on the other side allows SCSI, IP over FC and other 13 * protocols. This driver tree is for the latter adapters. 14 * 15 * This file should support both Point-to-Point and Arbitrated Loop topologies. 16 * 17 * Sources: 18 * Fibre Channel Physical & Signaling Interface (FC-PH), dpANS, 1994 19 * dpANS Fibre Channel Protocol for SCSI (X3.269-199X), Rev. 012, 1995 20 * Fibre Channel Arbitrated Loop (FC-AL), Rev. 4.5, 1995 21 * Fibre Channel Private Loop SCSI Direct Attach (FC-PLDA), Rev. 2.1, 1997 22 */ 23 24#include <linux/module.h> 25#include <linux/kernel.h> 26#include <linux/sched.h> 27#include <linux/types.h> 28#include <linux/fcntl.h> 29#include <linux/interrupt.h> 30#include <linux/ptrace.h> 31#include <linux/ioport.h> 32#include <linux/in.h> 33#include <linux/slab.h> 34#include <linux/string.h> 35#include <linux/init.h> 36#include <linux/blk.h> 37 38#include <asm/pgtable.h> 39#include <asm/irq.h> 40#include <asm/semaphore.h> 41#include "fcp_impl.h" 42#include "../scsi/hosts.h" 43 44/* #define FCDEBUG */ 45 46#define fc_printk printk ("%s: ", fc->name); printk 47 48#ifdef FCDEBUG 49#define FCD(x) fc_printk x; 50#define FCND(x) printk ("FC: "); printk x; 51#else 52#define FCD(x) 53#define FCND(x) 54#endif 55 56#ifdef __sparc__ 57#define dma_alloc_consistent(d,s,p) sbus_alloc_consistent(d,s,p) 58#define dma_free_consistent(d,s,v,h) sbus_free_consistent(d,s,v,h) 59#define dma_map_single(d,v,s,dir) sbus_map_single(d,v,s,dir) 60#define dma_unmap_single(d,h,s,dir) sbus_unmap_single(d,h,s,dir) 61#define dma_map_sg(d,s,n,dir) sbus_map_sg(d,s,n,dir) 62#define dma_unmap_sg(d,s,n,dir) sbus_unmap_sg(d,s,n,dir) 63#define scsi_to_fc_dma_dir(dir) scsi_to_sbus_dma_dir(dir) 64#define FC_DMA_BIDIRECTIONAL SBUS_DMA_BIDIRECTIONAL 65#else 66#define dma_alloc_consistent(d,s,p) pci_alloc_consistent(d,s,p) 67#define dma_free_consistent(d,s,v,h) pci_free_consistent(d,s,v,h) 68#define dma_map_single(d,v,s,dir) pci_map_single(d,v,s,dir) 69#define dma_unmap_single(d,h,s,dir) pci_unmap_single(d,h,s,dir) 70#define dma_map_sg(d,s,n,dir) pci_map_sg(d,s,n,dir) 71#define dma_unmap_sg(d,s,n,dir) pci_unmap_sg(d,s,n,dir) 72#define scsi_to_fc_dma_dir(dir) scsi_to_pci_dma_dir(dir) 73#define FC_DMA_BIDIRECTIONAL PCI_DMA_BIDIRECTIONAL 74#endif 75 76#define FCP_CMND(SCpnt) ((fcp_cmnd *)&(SCpnt->SCp)) 77#define FC_SCMND(SCpnt) ((fc_channel *)(SCpnt->host->hostdata[0])) 78#define SC_FCMND(fcmnd) ((Scsi_Cmnd *)((long)fcmnd - (long)&(((Scsi_Cmnd *)0)->SCp))) 79 80static int fcp_scsi_queue_it(fc_channel *, Scsi_Cmnd *, fcp_cmnd *, int); 81void fcp_queue_empty(fc_channel *); 82 83static void fcp_scsi_insert_queue (fc_channel *fc, fcp_cmnd *fcmd) 84{ 85 if (!fc->scsi_que) { 86 fc->scsi_que = fcmd; 87 fcmd->next = fcmd; 88 fcmd->prev = fcmd; 89 } else { 90 fc->scsi_que->prev->next = fcmd; 91 fcmd->prev = fc->scsi_que->prev; 92 fc->scsi_que->prev = fcmd; 93 fcmd->next = fc->scsi_que; 94 } 95} 96 97static void fcp_scsi_remove_queue (fc_channel *fc, fcp_cmnd *fcmd) 98{ 99 if (fcmd == fcmd->next) { 100 fc->scsi_que = NULL; 101 return; 102 } 103 if (fcmd == fc->scsi_que) 104 fc->scsi_que = fcmd->next; 105 fcmd->prev->next = fcmd->next; 106 fcmd->next->prev = fcmd->prev; 107} 108 109fc_channel *fc_channels = NULL; 110 111#define LSMAGIC 620829043 112typedef struct { 113 /* Must be first */ 114 struct semaphore sem; 115 int magic; 116 int count; 117 logi *logi; 118 fcp_cmnd *fcmds; 119 atomic_t todo; 120 struct timer_list timer; 121 unsigned char grace[0]; 122} ls; 123 124#define LSOMAGIC 654907799 125typedef struct { 126 /* Must be first */ 127 struct semaphore sem; 128 int magic; 129 int count; 130 fcp_cmnd *fcmds; 131 atomic_t todo; 132 struct timer_list timer; 133} lso; 134 135#define LSEMAGIC 84482456 136typedef struct { 137 /* Must be first */ 138 struct semaphore sem; 139 int magic; 140 int status; 141 struct timer_list timer; 142} lse; 143 144static void fcp_login_timeout(unsigned long data) 145{ 146 ls *l = (ls *)data; 147 FCND(("Login timeout\n")) 148 up(&l->sem); 149} 150 151static void fcp_login_done(fc_channel *fc, int i, int status) 152{ 153 fcp_cmnd *fcmd; 154 logi *plogi; 155 fc_hdr *fch; 156 ls *l = (ls *)fc->ls; 157 158 FCD(("Login done %d %d\n", i, status)) 159 if (i < l->count) { 160 if (fc->state == FC_STATE_FPORT_OK) { 161 FCD(("Additional FPORT_OK received with status %d\n", status)) 162 return; 163 } 164 switch (status) { 165 case FC_STATUS_OK: /* Oh, we found a fabric */ 166 case FC_STATUS_P_RJT: /* Oh, we haven't found any */ 167 fc->state = FC_STATE_FPORT_OK; 168 fcmd = l->fcmds + i; 169 plogi = l->logi + 3 * i; 170 dma_unmap_single (fc->dev, fcmd->cmd, 3 * sizeof(logi), 171 FC_DMA_BIDIRECTIONAL); 172 plogi->code = LS_PLOGI; 173 memcpy (&plogi->nport_wwn, &fc->wwn_nport, sizeof(fc_wwn)); 174 memcpy (&plogi->node_wwn, &fc->wwn_node, sizeof(fc_wwn)); 175 memcpy (&plogi->common, fc->common_svc, sizeof(common_svc_parm)); 176 memcpy (&plogi->class1, fc->class_svcs, 3*sizeof(svc_parm)); 177 fch = &fcmd->fch; 178 fcmd->token += l->count; 179 FILL_FCHDR_RCTL_DID(fch, R_CTL_ELS_REQ, fc->did); 180 FILL_FCHDR_SID(fch, fc->sid); 181#ifdef FCDEBUG 182 { 183 int i; 184 unsigned *x = (unsigned *)plogi; 185 printk ("logi: "); 186 for (i = 0; i < 21; i++) 187 printk ("%08x ", x[i]); 188 printk ("\n"); 189 } 190#endif 191 fcmd->cmd = dma_map_single (fc->dev, plogi, 3 * sizeof(logi), 192 FC_DMA_BIDIRECTIONAL); 193 fcmd->rsp = fcmd->cmd + 2 * sizeof(logi); 194 if (fc->hw_enque (fc, fcmd)) 195 printk ("FC: Cannot enque PLOGI packet on %s\n", fc->name); 196 break; 197 case FC_STATUS_ERR_OFFLINE: 198 fc->state = FC_STATE_MAYBEOFFLINE; 199 FCD (("FC is offline %d\n", l->grace[i])) 200 break; 201 default: 202 printk ("FLOGI failed for %s with status %d\n", fc->name, status); 203 /* Do some sort of error recovery here */ 204 break; 205 } 206 } else { 207 i -= l->count; 208 if (fc->state != FC_STATE_FPORT_OK) { 209 FCD(("Unexpected N-PORT rsp received")) 210 return; 211 } 212 switch (status) { 213 case FC_STATUS_OK: 214 plogi = l->logi + 3 * i; 215 dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi), 216 FC_DMA_BIDIRECTIONAL); 217 if (!fc->wwn_dest.lo && !fc->wwn_dest.hi) { 218 memcpy (&fc->wwn_dest, &plogi[1].node_wwn, sizeof(fc_wwn)); 219 FCD(("Dest WWN %08x%08x\n", *(u32 *)&fc->wwn_dest, fc->wwn_dest.lo)) 220 } else if (fc->wwn_dest.lo != plogi[1].node_wwn.lo || 221 fc->wwn_dest.hi != plogi[1].node_wwn.hi) { 222 printk ("%s: mismatch in wwns. Got %08x%08x, expected %08x%08x\n", 223 fc->name, 224 *(u32 *)&plogi[1].node_wwn, plogi[1].node_wwn.lo, 225 *(u32 *)&fc->wwn_dest, fc->wwn_dest.lo); 226 } 227 fc->state = FC_STATE_ONLINE; 228 printk ("%s: ONLINE\n", fc->name); 229 if (atomic_dec_and_test (&l->todo)) 230 up(&l->sem); 231 break; 232 case FC_STATUS_ERR_OFFLINE: 233 fc->state = FC_STATE_OFFLINE; 234 dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi), 235 FC_DMA_BIDIRECTIONAL); 236 printk ("%s: FC is offline\n", fc->name); 237 if (atomic_dec_and_test (&l->todo)) 238 up(&l->sem); 239 break; 240 default: 241 printk ("PLOGI failed for %s with status %d\n", fc->name, status); 242 /* Do some sort of error recovery here */ 243 break; 244 } 245 } 246} 247 248static void fcp_report_map_done(fc_channel *fc, int i, int status) 249{ 250 fcp_cmnd *fcmd; 251 fc_hdr *fch; 252 unsigned char j; 253 ls *l = (ls *)fc->ls; 254 fc_al_posmap *p; 255 256 FCD(("Report map done %d %d\n", i, status)) 257 switch (status) { 258 case FC_STATUS_OK: /* Ok, let's have a fun on a loop */ 259 dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi), 260 FC_DMA_BIDIRECTIONAL); 261 p = (fc_al_posmap *)(l->logi + 3 * i); 262#ifdef FCDEBUG 263 { 264 u32 *u = (u32 *)p; 265 FCD(("%08x\n", u[0])) 266 u ++; 267 FCD(("%08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n", u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7])) 268 } 269#endif 270 if ((p->magic & 0xffff0000) != FC_AL_LILP || !p->len) { 271 printk ("FC: Bad magic from REPORT_AL_MAP on %s - %08x\n", fc->name, p->magic); 272 fc->state = FC_STATE_OFFLINE; 273 } else { 274 fc->posmap = (fcp_posmap *)kmalloc(sizeof(fcp_posmap)+p->len, GFP_KERNEL); 275 if (!fc->posmap) { 276 printk("FC: Not enough memory, offlining channel\n"); 277 fc->state = FC_STATE_OFFLINE; 278 } else { 279 int k; 280 memset(fc->posmap, 0, sizeof(fcp_posmap)+p->len); 281 fc->sid = (p->magic & 0xff); 282 for (i = 0; i < p->len; i++) 283 if (p->alpa[i] == fc->sid) 284 break; 285 k = p->len; 286 if (i == p->len) 287 i = 0; 288 else { 289 p->len--; 290 i++; 291 } 292 fc->posmap->len = p->len; 293 for (j = 0; j < p->len; j++) { 294 if (i == k) i = 0; 295 fc->posmap->list[j] = p->alpa[i++]; 296 } 297 fc->state = FC_STATE_ONLINE; 298 } 299 } 300 printk ("%s: ONLINE\n", fc->name); 301 if (atomic_dec_and_test (&l->todo)) 302 up(&l->sem); 303 break; 304 case FC_STATUS_POINTTOPOINT: /* We're Point-to-Point, no AL... */ 305 FCD(("SID %d DID %d\n", fc->sid, fc->did)) 306 fcmd = l->fcmds + i; 307 dma_unmap_single(fc->dev, fcmd->cmd, 3 * sizeof(logi), 308 FC_DMA_BIDIRECTIONAL); 309 fch = &fcmd->fch; 310 memset(l->logi + 3 * i, 0, 3 * sizeof(logi)); 311 FILL_FCHDR_RCTL_DID(fch, R_CTL_ELS_REQ, FS_FABRIC_F_PORT); 312 FILL_FCHDR_SID(fch, 0); 313 FILL_FCHDR_TYPE_FCTL(fch, TYPE_EXTENDED_LS, F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE); 314 FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0); 315 FILL_FCHDR_OXRX(fch, 0xffff, 0xffff); 316 fch->param = 0; 317 l->logi [3 * i].code = LS_FLOGI; 318 fcmd->cmd = dma_map_single (fc->dev, l->logi + 3 * i, 3 * sizeof(logi), 319 FC_DMA_BIDIRECTIONAL); 320 fcmd->rsp = fcmd->cmd + sizeof(logi); 321 fcmd->cmdlen = sizeof(logi); 322 fcmd->rsplen = sizeof(logi); 323 fcmd->data = (dma_addr_t)NULL; 324 fcmd->class = FC_CLASS_SIMPLE; 325 fcmd->proto = TYPE_EXTENDED_LS; 326 if (fc->hw_enque (fc, fcmd)) 327 printk ("FC: Cannot enque FLOGI packet on %s\n", fc->name); 328 break; 329 case FC_STATUS_ERR_OFFLINE: 330 fc->state = FC_STATE_MAYBEOFFLINE; 331 FCD (("FC is offline %d\n", l->grace[i])) 332 break; 333 default: 334 printk ("FLOGI failed for %s with status %d\n", fc->name, status); 335 /* Do some sort of error recovery here */ 336 break; 337 } 338} 339 340void fcp_register(fc_channel *fc, u8 type, int unregister) 341{ 342 int size, i; 343 int slots = (fc->can_queue * 3) >> 1; 344 345 FCND(("Going to %sregister\n", unregister ? "un" : "")) 346 347 if (type == TYPE_SCSI_FCP) { 348 if (!unregister) { 349 fc->scsi_cmd_pool = (fcp_cmd *) 350 dma_alloc_consistent (fc->dev, 351 slots * (sizeof (fcp_cmd) + fc->rsp_size), 352 &fc->dma_scsi_cmd); 353 fc->scsi_rsp_pool = (char *)(fc->scsi_cmd_pool + slots); 354 fc->dma_scsi_rsp = fc->dma_scsi_cmd + slots * sizeof (fcp_cmd); 355 fc->scsi_bitmap_end = (slots + 63) & ~63; 356 size = fc->scsi_bitmap_end / 8; 357 fc->scsi_bitmap = kmalloc (size, GFP_KERNEL); 358 memset (fc->scsi_bitmap, 0, size); 359 set_bit (0, fc->scsi_bitmap); 360 for (i = fc->can_queue; i < fc->scsi_bitmap_end; i++) 361 set_bit (i, fc->scsi_bitmap); 362 fc->scsi_free = fc->can_queue; 363 fc->cmd_slots = (fcp_cmnd **)kmalloc(slots * sizeof(fcp_cmnd*), GFP_KERNEL); 364 memset(fc->cmd_slots, 0, slots * sizeof(fcp_cmnd*)); 365 fc->abort_count = 0; 366 } else { 367 fc->scsi_name[0] = 0; 368 kfree (fc->scsi_bitmap); 369 kfree (fc->cmd_slots); 370 FCND(("Unregistering\n")); 371 if (fc->rst_pkt) { 372 if (fc->rst_pkt->eh_state == SCSI_STATE_UNUSED) 373 kfree(fc->rst_pkt); 374 else { 375 /* Can't happen. Some memory would be lost. */ 376 printk("FC: Reset in progress. Now?!"); 377 } 378 } 379 FCND(("Unregistered\n")); 380 } 381 } else 382 printk ("FC: %segistering unknown type %02x\n", unregister ? "Unr" : "R", type); 383} 384 385static void fcp_scsi_done(Scsi_Cmnd *SCpnt); 386 387static inline void fcp_scsi_receive(fc_channel *fc, int token, int status, fc_hdr *fch) 388{ 389 fcp_cmnd *fcmd; 390 fcp_rsp *rsp; 391 int host_status; 392 Scsi_Cmnd *SCpnt; 393 int sense_len; 394 int rsp_status; 395 396 fcmd = fc->cmd_slots[token]; 397 if (!fcmd) return; 398 rsp = (fcp_rsp *) (fc->scsi_rsp_pool + fc->rsp_size * token); 399 SCpnt = SC_FCMND(fcmd); 400 401 if (SCpnt->done != fcp_scsi_done) 402 return; 403 404 rsp_status = rsp->fcp_status; 405 FCD(("rsp_status %08x status %08x\n", rsp_status, status)) 406 switch (status) { 407 case FC_STATUS_OK: 408 host_status=DID_OK; 409 410 if (rsp_status & FCP_STATUS_RESID) { 411#ifdef FCDEBUG 412 FCD(("Resid %d\n", rsp->fcp_resid)) 413 { 414 fcp_cmd *cmd = fc->scsi_cmd_pool + token; 415 int i; 416 417 printk ("Command "); 418 for (i = 0; i < sizeof(fcp_cmd); i+=4) 419 printk ("%08x ", *(u32 *)(((char *)cmd)+i)); 420 printk ("\nResponse "); 421 for (i = 0; i < fc->rsp_size; i+=4) 422 printk ("%08x ", *(u32 *)(((char *)rsp)+i)); 423 printk ("\n"); 424 } 425#endif 426 } 427 428 if (rsp_status & FCP_STATUS_SENSE_LEN) { 429 sense_len = rsp->fcp_sense_len; 430 if (sense_len > sizeof(SCpnt->sense_buffer)) sense_len = sizeof(SCpnt->sense_buffer); 431 memcpy(SCpnt->sense_buffer, ((char *)(rsp+1)), sense_len); 432 } 433 434 if (fcmd->data) { 435 if (SCpnt->use_sg) 436 dma_unmap_sg(fc->dev, (struct scatterlist *)SCpnt->buffer, SCpnt->use_sg, 437 scsi_to_fc_dma_dir(SCpnt->sc_data_direction)); 438 else 439 dma_unmap_single(fc->dev, fcmd->data, SCpnt->request_bufflen, 440 scsi_to_fc_dma_dir(SCpnt->sc_data_direction)); 441 } 442 break; 443 default: 444 host_status=DID_ERROR; 445 FCD(("Wrong FC status %d for token %d\n", status, token)) 446 break; 447 } 448 449 if (status_byte(rsp_status) == QUEUE_FULL) { 450 printk ("%s: (%d,%d) Received rsp_status 0x%x\n", fc->name, SCpnt->channel, SCpnt->target, rsp_status); 451 } 452 453 SCpnt->result = (host_status << 16) | (rsp_status & 0xff); 454#ifdef FCDEBUG 455 if (host_status || SCpnt->result || rsp_status) printk("FC: host_status %d, packet status %d\n", 456 host_status, SCpnt->result); 457#endif 458 SCpnt->done = fcmd->done; 459 fcmd->done=NULL; 460 clear_bit(token, fc->scsi_bitmap); 461 fc->scsi_free++; 462 FCD(("Calling scsi_done with %08x\n", SCpnt->result)) 463 SCpnt->scsi_done(SCpnt); 464} 465 466void fcp_receive_solicited(fc_channel *fc, int proto, int token, int status, fc_hdr *fch) 467{ 468 int magic; 469 FCD(("receive_solicited %d %d %d\n", proto, token, status)) 470 switch (proto) { 471 case TYPE_SCSI_FCP: 472 fcp_scsi_receive(fc, token, status, fch); break; 473 case TYPE_EXTENDED_LS: 474 case PROTO_REPORT_AL_MAP: 475 magic = 0; 476 if (fc->ls) 477 magic = ((ls *)(fc->ls))->magic; 478 if (magic == LSMAGIC) { 479 ls *l = (ls *)fc->ls; 480 int i = (token >= l->count) ? token - l->count : token; 481 482 /* Let's be sure */ 483 if ((unsigned)i < l->count && l->fcmds[i].fc == fc) { 484 if (proto == TYPE_EXTENDED_LS) 485 fcp_login_done(fc, token, status); 486 else 487 fcp_report_map_done(fc, token, status); 488 break; 489 } 490 } 491 FCD(("fc %p fc->ls %p fc->cmd_slots %p\n", fc, fc->ls, fc->cmd_slots)) 492 if (proto == TYPE_EXTENDED_LS && !fc->ls && fc->cmd_slots) { 493 fcp_cmnd *fcmd; 494 495 fcmd = fc->cmd_slots[token]; 496 if (fcmd && fcmd->ls && ((ls *)(fcmd->ls))->magic == LSEMAGIC) { 497 lse *l = (lse *)fcmd->ls; 498 499 l->status = status; 500 up (&l->sem); 501 } 502 } 503 break; 504 case PROTO_OFFLINE: 505 if (fc->ls && ((lso *)(fc->ls))->magic == LSOMAGIC) { 506 lso *l = (lso *)fc->ls; 507 508 if ((unsigned)token < l->count && l->fcmds[token].fc == fc) { 509 /* Wow, OFFLINE response arrived :) */ 510 FCD(("OFFLINE Response arrived\n")) 511 fc->state = FC_STATE_OFFLINE; 512 if (atomic_dec_and_test (&l->todo)) 513 up(&l->sem); 514 } 515 } 516 break; 517 518 default: 519 break; 520 } 521} 522 523void fcp_state_change(fc_channel *fc, int state) 524{ 525 FCD(("state_change %d %d\n", state, fc->state)) 526 if (state == FC_STATE_ONLINE && fc->state == FC_STATE_MAYBEOFFLINE) 527 fc->state = FC_STATE_UNINITED; 528 else if (state == FC_STATE_ONLINE) 529 printk (KERN_WARNING "%s: state change to ONLINE\n", fc->name); 530 else 531 printk (KERN_ERR "%s: state change to OFFLINE\n", fc->name); 532} 533 534int fcp_initialize(fc_channel *fcchain, int count) 535{ 536 fc_channel *fc; 537 fcp_cmnd *fcmd; 538 int i, retry, ret; 539 ls *l; 540 541 FCND(("fcp_inititialize %08lx\n", (long)fcp_init)) 542 FCND(("fc_channels %08lx\n", (long)fc_channels)) 543 FCND((" SID %d DID %d\n", fcchain->sid, fcchain->did)) 544 l = kmalloc(sizeof (ls) + count, GFP_KERNEL); 545 if (!l) { 546 printk ("FC: Cannot allocate memory for initialization\n"); 547 return -ENOMEM; 548 } 549 memset (l, 0, sizeof(ls) + count); 550 l->magic = LSMAGIC; 551 l->count = count; 552 FCND(("FCP Init for %d channels\n", count)) 553 init_MUTEX_LOCKED(&l->sem); 554 l->timer.function = fcp_login_timeout; 555 l->timer.data = (unsigned long)l; 556 atomic_set (&l->todo, count); 557 l->logi = kmalloc (count * 3 * sizeof(logi), GFP_KERNEL); 558 l->fcmds = kmalloc (count * sizeof(fcp_cmnd), GFP_KERNEL); 559 if (!l->logi || !l->fcmds) { 560 if (l->logi) kfree (l->logi); 561 if (l->fcmds) kfree (l->fcmds); 562 kfree (l); 563 printk ("FC: Cannot allocate DMA memory for initialization\n"); 564 return -ENOMEM; 565 } 566 memset (l->logi, 0, count * 3 * sizeof(logi)); 567 memset (l->fcmds, 0, count * sizeof(fcp_cmnd)); 568 for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++) { 569 fc->state = FC_STATE_UNINITED; 570 fc->rst_pkt = NULL; /* kmalloc when first used */ 571 } 572 /* First try if we are in a AL topology */ 573 FCND(("Initializing REPORT_MAP packets\n")) 574 for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++) { 575 fcmd = l->fcmds + i; 576 fc->login = fcmd; 577 fc->ls = (void *)l; 578 /* Assumes sizeof(fc_al_posmap) < 3 * sizeof(logi), which is true */ 579 fcmd->cmd = dma_map_single (fc->dev, l->logi + 3 * i, 3 * sizeof(logi), 580 FC_DMA_BIDIRECTIONAL); 581 fcmd->proto = PROTO_REPORT_AL_MAP; 582 fcmd->token = i; 583 fcmd->fc = fc; 584 } 585 for (retry = 0; retry < 8; retry++) { 586 int nqueued = 0; 587 FCND(("Sending REPORT_MAP/FLOGI/PLOGI packets\n")) 588 for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++) { 589 if (fc->state == FC_STATE_ONLINE || fc->state == FC_STATE_OFFLINE) 590 continue; 591 disable_irq(fc->irq); 592 if (fc->state == FC_STATE_MAYBEOFFLINE) { 593 if (!l->grace[i]) { 594 l->grace[i]++; 595 FCD(("Grace\n")) 596 } else { 597 fc->state = FC_STATE_OFFLINE; 598 enable_irq(fc->irq); 599 dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi), FC_DMA_BIDIRECTIONAL); 600 if (atomic_dec_and_test (&l->todo)) 601 goto all_done; 602 } 603 } 604 ret = fc->hw_enque (fc, fc->login); 605 enable_irq(fc->irq); 606 if (!ret) { 607 nqueued++; 608 continue; 609 } 610 if (ret == -ENOSYS && fc->login->proto == PROTO_REPORT_AL_MAP) { 611 /* Oh yes, this card handles Point-to-Point only, so let's try that. */ 612 fc_hdr *fch; 613 614 FCD(("SID %d DID %d\n", fc->sid, fc->did)) 615 fcmd = l->fcmds + i; 616 dma_unmap_single(fc->dev, fcmd->cmd, 3 * sizeof(logi), FC_DMA_BIDIRECTIONAL); 617 fch = &fcmd->fch; 618 FILL_FCHDR_RCTL_DID(fch, R_CTL_ELS_REQ, FS_FABRIC_F_PORT); 619 FILL_FCHDR_SID(fch, 0); 620 FILL_FCHDR_TYPE_FCTL(fch, TYPE_EXTENDED_LS, F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE); 621 FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0); 622 FILL_FCHDR_OXRX(fch, 0xffff, 0xffff); 623 fch->param = 0; 624 l->logi [3 * i].code = LS_FLOGI; 625 fcmd->cmd = dma_map_single (fc->dev, l->logi + 3 * i, 3 * sizeof(logi), FC_DMA_BIDIRECTIONAL); 626 fcmd->rsp = fcmd->cmd + sizeof(logi); 627 fcmd->cmdlen = sizeof(logi); 628 fcmd->rsplen = sizeof(logi); 629 fcmd->data = (dma_addr_t)NULL; 630 fcmd->class = FC_CLASS_SIMPLE; 631 fcmd->proto = TYPE_EXTENDED_LS; 632 } else 633 printk ("FC: Cannot enque FLOGI/REPORT_MAP packet on %s\n", fc->name); 634 } 635 636 if (nqueued) { 637 l->timer.expires = jiffies + 5 * HZ; 638 add_timer(&l->timer); 639 640 down(&l->sem); 641 if (!atomic_read(&l->todo)) { 642 FCND(("All channels answered in time\n")) 643 break; /* All fc channels have answered us */ 644 } 645 } 646 } 647all_done: 648 for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++) { 649 fc->ls = NULL; 650 switch (fc->state) { 651 case FC_STATE_ONLINE: break; 652 case FC_STATE_OFFLINE: break; 653 default: dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi), FC_DMA_BIDIRECTIONAL); 654 break; 655 } 656 } 657 del_timer(&l->timer); 658 kfree (l->logi); 659 kfree (l->fcmds); 660 kfree (l); 661 return 0; 662} 663 664int fcp_forceoffline(fc_channel *fcchain, int count) 665{ 666 fc_channel *fc; 667 fcp_cmnd *fcmd; 668 int i, ret; 669 lso l; 670 671 memset (&l, 0, sizeof(lso)); 672 l.count = count; 673 l.magic = LSOMAGIC; 674 FCND(("FCP Force Offline for %d channels\n", count)) 675 init_MUTEX_LOCKED(&l.sem); 676 l.timer.function = fcp_login_timeout; 677 l.timer.data = (unsigned long)&l; 678 atomic_set (&l.todo, count); 679 l.fcmds = kmalloc (count * sizeof(fcp_cmnd), GFP_KERNEL); 680 if (!l.fcmds) { 681 kfree (l.fcmds); 682 printk ("FC: Cannot allocate memory for forcing offline\n"); 683 return -ENOMEM; 684 } 685 memset (l.fcmds, 0, count * sizeof(fcp_cmnd)); 686 FCND(("Initializing OFFLINE packets\n")) 687 for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++) { 688 fc->state = FC_STATE_UNINITED; 689 fcmd = l.fcmds + i; 690 fc->login = fcmd; 691 fc->ls = (void *)&l; 692 fcmd->did = fc->did; 693 fcmd->class = FC_CLASS_OFFLINE; 694 fcmd->proto = PROTO_OFFLINE; 695 fcmd->token = i; 696 fcmd->fc = fc; 697 disable_irq(fc->irq); 698 ret = fc->hw_enque (fc, fc->login); 699 enable_irq(fc->irq); 700 if (ret) printk ("FC: Cannot enque OFFLINE packet on %s\n", fc->name); 701 } 702 703 l.timer.expires = jiffies + 5 * HZ; 704 add_timer(&l.timer); 705 down(&l.sem); 706 del_timer(&l.timer); 707 708 for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++) 709 fc->ls = NULL; 710 kfree (l.fcmds); 711 return 0; 712} 713 714int fcp_init(fc_channel *fcchain) 715{ 716 fc_channel *fc; 717 int count=0; 718 int ret; 719 720 for (fc = fcchain; fc; fc = fc->next) { 721 fc->fcp_register = fcp_register; 722 count++; 723 } 724 725 ret = fcp_initialize (fcchain, count); 726 if (ret) 727 return ret; 728 729 if (!fc_channels) 730 fc_channels = fcchain; 731 else { 732 for (fc = fc_channels; fc->next; fc = fc->next); 733 fc->next = fcchain; 734 } 735 return ret; 736} 737 738void fcp_release(fc_channel *fcchain, int count) /* count must > 0 */ 739{ 740 fc_channel *fc; 741 fc_channel *fcx; 742 743 for (fc = fcchain; --count && fc->next; fc = fc->next); 744 if (count) { 745 printk("FC: nothing to release\n"); 746 return; 747 } 748 749 if (fc_channels == fcchain) 750 fc_channels = fc->next; 751 else { 752 for (fcx = fc_channels; fcx->next != fcchain; fcx = fcx->next); 753 fcx->next = fc->next; 754 } 755 fc->next = NULL; 756 757 /* 758 * We've just grabbed fcchain out of the fc_channel list 759 * and zero-terminated it, while destroying the count. 760 * 761 * Freeing the fc's is the low level driver's responsibility. 762 */ 763} 764 765 766static void fcp_scsi_done (Scsi_Cmnd *SCpnt) 767{ 768 if (FCP_CMND(SCpnt)->done) 769 FCP_CMND(SCpnt)->done(SCpnt); 770} 771 772static int fcp_scsi_queue_it(fc_channel *fc, Scsi_Cmnd *SCpnt, fcp_cmnd *fcmd, int prepare) 773{ 774 long i; 775 fcp_cmd *cmd; 776 u32 fcp_cntl; 777 if (prepare) { 778 i = find_first_zero_bit (fc->scsi_bitmap, fc->scsi_bitmap_end); 779 set_bit (i, fc->scsi_bitmap); 780 fcmd->token = i; 781 cmd = fc->scsi_cmd_pool + i; 782 783 if (fc->encode_addr (SCpnt, cmd->fcp_addr, fc, fcmd)) { 784 /* Invalid channel/id/lun and couldn't map it into fcp_addr */ 785 clear_bit (i, fc->scsi_bitmap); 786 SCpnt->result = (DID_BAD_TARGET << 16); 787 SCpnt->scsi_done(SCpnt); 788 return 0; 789 } 790 fc->scsi_free--; 791 fc->cmd_slots[fcmd->token] = fcmd; 792 793 if (SCpnt->device->tagged_supported) { 794 if (jiffies - fc->ages[SCpnt->channel * fc->targets + SCpnt->target] > (5 * 60 * HZ)) { 795 fc->ages[SCpnt->channel * fc->targets + SCpnt->target] = jiffies; 796 fcp_cntl = FCP_CNTL_QTYPE_ORDERED; 797 } else 798 fcp_cntl = FCP_CNTL_QTYPE_SIMPLE; 799 } else 800 fcp_cntl = FCP_CNTL_QTYPE_UNTAGGED; 801 if (!SCpnt->request_bufflen && !SCpnt->use_sg) { 802 cmd->fcp_cntl = fcp_cntl; 803 fcmd->data = (dma_addr_t)NULL; 804 } else { 805 switch (SCpnt->cmnd[0]) { 806 case WRITE_6: 807 case WRITE_10: 808 case WRITE_12: 809 cmd->fcp_cntl = (FCP_CNTL_WRITE | fcp_cntl); break; 810 default: 811 cmd->fcp_cntl = (FCP_CNTL_READ | fcp_cntl); break; 812 } 813 if (!SCpnt->use_sg) { 814 cmd->fcp_data_len = SCpnt->request_bufflen; 815 fcmd->data = dma_map_single (fc->dev, (char *)SCpnt->request_buffer, 816 SCpnt->request_bufflen, 817 scsi_to_fc_dma_dir(SCpnt->sc_data_direction)); 818 } else { 819 struct scatterlist *sg = (struct scatterlist *)SCpnt->buffer; 820 int nents; 821 822 FCD(("XXX: Use_sg %d %d\n", SCpnt->use_sg, sg->length)) 823 nents = dma_map_sg (fc->dev, sg, SCpnt->use_sg, 824 scsi_to_fc_dma_dir(SCpnt->sc_data_direction)); 825 if (nents > 1) printk ("%s: SG for nents %d (use_sg %d) not handled yet\n", fc->name, nents, SCpnt->use_sg); 826 fcmd->data = sg_dma_address(sg); 827 cmd->fcp_data_len = sg_dma_len(sg); 828 } 829 } 830 memcpy (cmd->fcp_cdb, SCpnt->cmnd, SCpnt->cmd_len); 831 memset (cmd->fcp_cdb+SCpnt->cmd_len, 0, sizeof(cmd->fcp_cdb)-SCpnt->cmd_len); 832 FCD(("XXX: %04x.%04x.%04x.%04x - %08x%08x%08x\n", cmd->fcp_addr[0], cmd->fcp_addr[1], cmd->fcp_addr[2], cmd->fcp_addr[3], *(u32 *)SCpnt->cmnd, *(u32 *)(SCpnt->cmnd+4), *(u32 *)(SCpnt->cmnd+8))) 833 } 834 FCD(("Trying to enque %p\n", fcmd)) 835 if (!fc->scsi_que) { 836 if (!fc->hw_enque (fc, fcmd)) { 837 FCD(("hw_enque succeeded for %p\n", fcmd)) 838 return 0; 839 } 840 } 841 FCD(("Putting into que1 %p\n", fcmd)) 842 fcp_scsi_insert_queue (fc, fcmd); 843 return 0; 844} 845 846int fcp_scsi_queuecommand(Scsi_Cmnd *SCpnt, void (* done)(Scsi_Cmnd *)) 847{ 848 fcp_cmnd *fcmd = FCP_CMND(SCpnt); 849 fc_channel *fc = FC_SCMND(SCpnt); 850 851 FCD(("Entering SCSI queuecommand %p\n", fcmd)) 852 if (SCpnt->done != fcp_scsi_done) { 853 fcmd->done = SCpnt->done; 854 SCpnt->done = fcp_scsi_done; 855 SCpnt->scsi_done = done; 856 fcmd->proto = TYPE_SCSI_FCP; 857 if (!fc->scsi_free) { 858 FCD(("FC: !scsi_free, putting cmd on ML queue\n")) 859#if FCP_SCSI_USE_NEW_EH_CODE == 0 860 printk("fcp_scsi_queue_command: queue full, losing cmd, bad\n"); 861#endif 862 return 1; 863 } 864 return fcp_scsi_queue_it(fc, SCpnt, fcmd, 1); 865 } 866 return fcp_scsi_queue_it(fc, SCpnt, fcmd, 0); 867} 868 869void fcp_queue_empty(fc_channel *fc) 870{ 871 fcp_cmnd *fcmd; 872 873 FCD(("Queue empty\n")) 874 while ((fcmd = fc->scsi_que)) { 875 /* The hw told us we can try again queue some packet */ 876 if (fc->hw_enque (fc, fcmd)) 877 break; 878 fcp_scsi_remove_queue (fc, fcmd); 879 } 880} 881 882int fcp_old_abort(Scsi_Cmnd *SCpnt) 883{ 884 printk("FC: Abort not implemented\n"); 885 return 1; 886} 887 888int fcp_scsi_abort(Scsi_Cmnd *SCpnt) 889{ 890 /* Internal bookkeeping only. Lose 1 cmd_slots slot. */ 891 fcp_cmnd *fcmd = FCP_CMND(SCpnt); 892 fc_channel *fc = FC_SCMND(SCpnt); 893 894 /* 895 * We react to abort requests by simply forgetting 896 * about the command and pretending everything's sweet. 897 * This may or may not be silly. We can't, however, 898 * immediately reuse the command's cmd_slots slot, 899 * as its result may arrive later and we cannot 900 * check whether it is the aborted one, can't we? 901 * 902 * Therefore, after the first few aborts are done, 903 * we tell the scsi error handler to do something clever. 904 * It will eventually call host reset, refreshing 905 * cmd_slots for us. 906 * 907 * There is a theoretical chance that we sometimes allow 908 * more than can_queue packets to the jungle this way, 909 * but the worst outcome possible is a series of 910 * more aborts and eventually the dev_reset catharsis. 911 */ 912 913 if (++fc->abort_count < (fc->can_queue >> 1)) { 914 SCpnt->result = DID_ABORT; 915 fcmd->done(SCpnt); 916 printk("FC: soft abort\n"); 917 return SUCCESS; 918 } else { 919 printk("FC: hard abort refused\n"); 920 return FAILED; 921 } 922} 923 924void fcp_scsi_reset_done(Scsi_Cmnd *SCpnt) 925{ 926 fc_channel *fc = FC_SCMND(SCpnt); 927 928 fc->rst_pkt->eh_state = SCSI_STATE_FINISHED; 929 up(fc->rst_pkt->host->eh_action); 930} 931 932#define FCP_RESET_TIMEOUT (2*HZ) 933 934int fcp_scsi_dev_reset(Scsi_Cmnd *SCpnt) 935{ 936 fcp_cmd *cmd; 937 fcp_cmnd *fcmd; 938 fc_channel *fc = FC_SCMND(SCpnt); 939 DECLARE_MUTEX_LOCKED(sem); 940 941 if (!fc->rst_pkt) { 942 fc->rst_pkt = (Scsi_Cmnd *) kmalloc(sizeof(SCpnt), GFP_KERNEL); 943 if (!fc->rst_pkt) return FAILED; 944 945 fcmd = FCP_CMND(fc->rst_pkt); 946 947 948 fcmd->token = 0; 949 cmd = fc->scsi_cmd_pool + 0; 950 FCD(("Preparing rst packet\n")) 951 fc->encode_addr (SCpnt, cmd->fcp_addr, fc, fcmd); 952 fc->rst_pkt->channel = SCpnt->channel; 953 fc->rst_pkt->target = SCpnt->target; 954 fc->rst_pkt->lun = 0; 955 fc->rst_pkt->cmd_len = 0; 956 957 fc->cmd_slots[0] = fcmd; 958 959 cmd->fcp_cntl = FCP_CNTL_QTYPE_ORDERED | FCP_CNTL_RESET; 960 fcmd->data = (dma_addr_t)NULL; 961 fcmd->proto = TYPE_SCSI_FCP; 962 963 memcpy (cmd->fcp_cdb, SCpnt->cmnd, SCpnt->cmd_len); 964 memset (cmd->fcp_cdb+SCpnt->cmd_len, 0, sizeof(cmd->fcp_cdb)-SCpnt->cmd_len); 965 FCD(("XXX: %04x.%04x.%04x.%04x - %08x%08x%08x\n", cmd->fcp_addr[0], cmd->fcp_addr[1], cmd->fcp_addr[2], cmd->fcp_addr[3], *(u32 *)SCpnt->cmnd, *(u32 *)(SCpnt->cmnd+4), *(u32 *)(SCpnt->cmnd+8))) 966 } else { 967 fcmd = FCP_CMND(fc->rst_pkt); 968 if (fc->rst_pkt->eh_state == SCSI_STATE_QUEUED) 969 return FAILED; /* or SUCCESS. Only these */ 970 } 971 fc->rst_pkt->done = NULL; 972 973 974 fc->rst_pkt->eh_state = SCSI_STATE_QUEUED; 975 976 fc->rst_pkt->eh_timeout.data = (unsigned long) fc->rst_pkt; 977 fc->rst_pkt->eh_timeout.expires = jiffies + FCP_RESET_TIMEOUT; 978 fc->rst_pkt->eh_timeout.function = (void (*)(unsigned long))fcp_scsi_reset_done; 979 980 add_timer(&fc->rst_pkt->eh_timeout); 981 982 /* 983 * Set up the semaphore so we wait for the command to complete. 984 */ 985 986 fc->rst_pkt->host->eh_action = &sem; 987 fc->rst_pkt->request.rq_status = RQ_SCSI_BUSY; 988 989 fc->rst_pkt->done = fcp_scsi_reset_done; 990 fcp_scsi_queue_it(fc, fc->rst_pkt, fcmd, 0); 991 992 down(&sem); 993 994 fc->rst_pkt->host->eh_action = NULL; 995 del_timer(&fc->rst_pkt->eh_timeout); 996 997 /* 998 * See if timeout. If so, tell the host to forget about it. 999 * In other words, we don't want a callback any more. 1000 */ 1001 if (fc->rst_pkt->eh_state == SCSI_STATE_TIMEOUT ) { 1002 fc->rst_pkt->eh_state = SCSI_STATE_UNUSED; 1003 return FAILED; 1004 } 1005 fc->rst_pkt->eh_state = SCSI_STATE_UNUSED; 1006 return SUCCESS; 1007} 1008 1009int fcp_scsi_bus_reset(Scsi_Cmnd *SCpnt) 1010{ 1011 printk ("FC: bus reset!\n"); 1012 return FAILED; 1013} 1014 1015int fcp_scsi_host_reset(Scsi_Cmnd *SCpnt) 1016{ 1017 fc_channel *fc = FC_SCMND(SCpnt); 1018 fcp_cmnd *fcmd = FCP_CMND(SCpnt); 1019 int i; 1020 1021 printk ("FC: host reset\n"); 1022 1023 for (i=0; i < fc->can_queue; i++) { 1024 if (fc->cmd_slots[i] && SCpnt->result != DID_ABORT) { 1025 SCpnt->result = DID_RESET; 1026 fcmd->done(SCpnt); 1027 fc->cmd_slots[i] = NULL; 1028 } 1029 } 1030 fc->reset(fc); 1031 fc->abort_count = 0; 1032 if (fcp_initialize(fc, 1)) return SUCCESS; 1033 else return FAILED; 1034} 1035 1036static int fcp_els_queue_it(fc_channel *fc, fcp_cmnd *fcmd) 1037{ 1038 long i; 1039 1040 i = find_first_zero_bit (fc->scsi_bitmap, fc->scsi_bitmap_end); 1041 set_bit (i, fc->scsi_bitmap); 1042 fcmd->token = i; 1043 fc->scsi_free--; 1044 fc->cmd_slots[fcmd->token] = fcmd; 1045 return fcp_scsi_queue_it(fc, NULL, fcmd, 0); 1046} 1047 1048static int fc_do_els(fc_channel *fc, unsigned int alpa, void *data, int len) 1049{ 1050 fcp_cmnd _fcmd, *fcmd; 1051 fc_hdr *fch; 1052 lse l; 1053 int i; 1054 1055 fcmd = &_fcmd; 1056 memset(fcmd, 0, sizeof(fcmd)); 1057 FCD(("PLOGI SID %d DID %d\n", fc->sid, alpa)) 1058 fch = &fcmd->fch; 1059 FILL_FCHDR_RCTL_DID(fch, R_CTL_ELS_REQ, alpa); 1060 FILL_FCHDR_SID(fch, fc->sid); 1061 FILL_FCHDR_TYPE_FCTL(fch, TYPE_EXTENDED_LS, F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE); 1062 FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0); 1063 FILL_FCHDR_OXRX(fch, 0xffff, 0xffff); 1064 fch->param = 0; 1065 fcmd->cmd = dma_map_single (fc->dev, data, 2 * len, FC_DMA_BIDIRECTIONAL); 1066 fcmd->rsp = fcmd->cmd + len; 1067 fcmd->cmdlen = len; 1068 fcmd->rsplen = len; 1069 fcmd->data = (dma_addr_t)NULL; 1070 fcmd->fc = fc; 1071 fcmd->class = FC_CLASS_SIMPLE; 1072 fcmd->proto = TYPE_EXTENDED_LS; 1073 1074 memset (&l, 0, sizeof(lse)); 1075 l.magic = LSEMAGIC; 1076 init_MUTEX_LOCKED(&l.sem); 1077 l.timer.function = fcp_login_timeout; 1078 l.timer.data = (unsigned long)&l; 1079 l.status = FC_STATUS_TIMED_OUT; 1080 fcmd->ls = (void *)&l; 1081 1082 disable_irq(fc->irq); 1083 fcp_els_queue_it(fc, fcmd); 1084 enable_irq(fc->irq); 1085 1086 for (i = 0;;) { 1087 l.timer.expires = jiffies + 5 * HZ; 1088 add_timer(&l.timer); 1089 down(&l.sem); 1090 del_timer(&l.timer); 1091 if (l.status != FC_STATUS_TIMED_OUT) break; 1092 if (++i == 3) break; 1093 disable_irq(fc->irq); 1094 fcp_scsi_queue_it(fc, NULL, fcmd, 0); 1095 enable_irq(fc->irq); 1096 } 1097 1098 clear_bit(fcmd->token, fc->scsi_bitmap); 1099 fc->scsi_free++; 1100 dma_unmap_single (fc->dev, fcmd->cmd, 2 * len, FC_DMA_BIDIRECTIONAL); 1101 return l.status; 1102} 1103 1104int fc_do_plogi(fc_channel *fc, unsigned char alpa, fc_wwn *node, fc_wwn *nport) 1105{ 1106 logi *l; 1107 int status; 1108 1109 l = (logi *)kmalloc(2 * sizeof(logi), GFP_KERNEL); 1110 if (!l) return -ENOMEM; 1111 memset(l, 0, 2 * sizeof(logi)); 1112 l->code = LS_PLOGI; 1113 memcpy (&l->nport_wwn, &fc->wwn_nport, sizeof(fc_wwn)); 1114 memcpy (&l->node_wwn, &fc->wwn_node, sizeof(fc_wwn)); 1115 memcpy (&l->common, fc->common_svc, sizeof(common_svc_parm)); 1116 memcpy (&l->class1, fc->class_svcs, 3*sizeof(svc_parm)); 1117 status = fc_do_els(fc, alpa, l, sizeof(logi)); 1118 if (status == FC_STATUS_OK) { 1119 if (l[1].code == LS_ACC) { 1120#ifdef FCDEBUG 1121 u32 *u = (u32 *)&l[1].nport_wwn; 1122 FCD(("AL-PA %02x: Port WWN %08x%08x Node WWN %08x%08x\n", alpa, 1123 u[0], u[1], u[2], u[3])) 1124#endif 1125 memcpy(nport, &l[1].nport_wwn, sizeof(fc_wwn)); 1126 memcpy(node, &l[1].node_wwn, sizeof(fc_wwn)); 1127 } else 1128 status = FC_STATUS_BAD_RSP; 1129 } 1130 kfree(l); 1131 return status; 1132} 1133 1134typedef struct { 1135 unsigned int code; 1136 unsigned params[4]; 1137} prli; 1138 1139int fc_do_prli(fc_channel *fc, unsigned char alpa) 1140{ 1141 prli *p; 1142 int status; 1143 1144 p = (prli *)kmalloc(2 * sizeof(prli), GFP_KERNEL); 1145 if (!p) return -ENOMEM; 1146 memset(p, 0, 2 * sizeof(prli)); 1147 p->code = LS_PRLI; 1148 p->params[0] = 0x08002000; 1149 p->params[3] = 0x00000022; 1150 status = fc_do_els(fc, alpa, p, sizeof(prli)); 1151 if (status == FC_STATUS_OK && p[1].code != LS_PRLI_ACC && p[1].code != LS_ACC) 1152 status = FC_STATUS_BAD_RSP; 1153 kfree(p); 1154 return status; 1155} 1156