Lines Matching refs:fc
0 /* fc.c: Generic Fibre Channel and FC4 SCSI driver.
45 #define fc_printk printk ("%s: ", fc->name); printk
78 static void fcp_scsi_insert_queue (fc_channel *fc, fcp_cmnd *fcmd)
80 if (!fc->scsi_que) {
81 fc->scsi_que = fcmd;
85 fc->scsi_que->prev->next = fcmd;
86 fcmd->prev = fc->scsi_que->prev;
87 fc->scsi_que->prev = fcmd;
88 fcmd->next = fc->scsi_que;
92 static void fcp_scsi_remove_queue (fc_channel *fc, fcp_cmnd *fcmd)
95 fc->scsi_que = NULL;
98 if (fcmd == fc->scsi_que)
99 fc->scsi_que = fcmd->next;
146 static void fcp_login_done(fc_channel *fc, int i, int status)
151 ls *l = (ls *)fc->ls;
155 if (fc->state == FC_STATE_FPORT_OK) {
162 fc->state = FC_STATE_FPORT_OK;
165 dma_unmap_single (fc->dev, fcmd->cmd, 3 * sizeof(logi),
168 memcpy (&plogi->nport_wwn, &fc->wwn_nport, sizeof(fc_wwn));
169 memcpy (&plogi->node_wwn, &fc->wwn_node, sizeof(fc_wwn));
170 memcpy (&plogi->common, fc->common_svc, sizeof(common_svc_parm));
171 memcpy (&plogi->class1, fc->class_svcs, 3*sizeof(svc_parm));
174 FILL_FCHDR_RCTL_DID(fch, R_CTL_ELS_REQ, fc->did);
175 FILL_FCHDR_SID(fch, fc->sid);
186 fcmd->cmd = dma_map_single (fc->dev, plogi, 3 * sizeof(logi),
189 if (fc->hw_enque (fc, fcmd))
190 printk ("FC: Cannot enque PLOGI packet on %s\n", fc->name);
193 fc->state = FC_STATE_MAYBEOFFLINE;
197 printk ("FLOGI failed for %s with status %d\n", fc->name, status);
203 if (fc->state != FC_STATE_FPORT_OK) {
210 dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi),
212 if (!fc->wwn_dest.lo && !fc->wwn_dest.hi) {
213 memcpy (&fc->wwn_dest, &plogi[1].node_wwn, sizeof(fc_wwn));
214 FCD(("Dest WWN %08x%08x\n", *(u32 *)&fc->wwn_dest, fc->wwn_dest.lo))
215 } else if (fc->wwn_dest.lo != plogi[1].node_wwn.lo ||
216 fc->wwn_dest.hi != plogi[1].node_wwn.hi) {
218 fc->name,
220 *(u32 *)&fc->wwn_dest, fc->wwn_dest.lo);
222 fc->state = FC_STATE_ONLINE;
223 printk ("%s: ONLINE\n", fc->name);
228 fc->state = FC_STATE_OFFLINE;
229 dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi),
231 printk ("%s: FC is offline\n", fc->name);
236 printk ("PLOGI failed for %s with status %d\n", fc->name, status);
243 static void fcp_report_map_done(fc_channel *fc, int i, int status)
248 ls *l = (ls *)fc->ls;
254 dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi),
266 printk ("FC: Bad magic from REPORT_AL_MAP on %s - %08x\n", fc->name, p->magic);
267 fc->state = FC_STATE_OFFLINE;
269 fc->posmap = kzalloc(sizeof(fcp_posmap)+p->len, GFP_KERNEL);
270 if (!fc->posmap) {
272 fc->state = FC_STATE_OFFLINE;
275 fc->sid = (p->magic & 0xff);
277 if (p->alpa[i] == fc->sid)
286 fc->posmap->len = p->len;
289 fc->posmap->list[j] = p->alpa[i++];
291 fc->state = FC_STATE_ONLINE;
294 printk ("%s: ONLINE\n", fc->name);
299 FCD(("SID %d DID %d\n", fc->sid, fc->did))
301 dma_unmap_single(fc->dev, fcmd->cmd, 3 * sizeof(logi),
312 fcmd->cmd = dma_map_single (fc->dev, l->logi + 3 * i, 3 * sizeof(logi),
320 if (fc->hw_enque (fc, fcmd))
321 printk ("FC: Cannot enque FLOGI packet on %s\n", fc->name);
324 fc->state = FC_STATE_MAYBEOFFLINE;
328 printk ("FLOGI failed for %s with status %d\n", fc->name, status);
334 void fcp_register(fc_channel *fc, u8 type, int unregister)
337 int slots = (fc->can_queue * 3) >> 1;
343 fc->scsi_cmd_pool = (fcp_cmd *)
344 dma_alloc_consistent (fc->dev,
345 slots * (sizeof (fcp_cmd) + fc->rsp_size),
346 &fc->dma_scsi_cmd);
347 fc->scsi_rsp_pool = (char *)(fc->scsi_cmd_pool + slots);
348 fc->dma_scsi_rsp = fc->dma_scsi_cmd + slots * sizeof (fcp_cmd);
349 fc->scsi_bitmap_end = (slots + 63) & ~63;
350 size = fc->scsi_bitmap_end / 8;
351 fc->scsi_bitmap = kzalloc (size, GFP_KERNEL);
352 set_bit (0, fc->scsi_bitmap);
353 for (i = fc->can_queue; i < fc->scsi_bitmap_end; i++)
354 set_bit (i, fc->scsi_bitmap);
355 fc->scsi_free = fc->can_queue;
356 fc->cmd_slots = kzalloc(slots * sizeof(fcp_cmnd*), GFP_KERNEL);
357 fc->abort_count = 0;
359 fc->scsi_name[0] = 0;
360 kfree (fc->scsi_bitmap);
361 kfree (fc->cmd_slots);
371 static inline void fcp_scsi_receive(fc_channel *fc, int token, int status, fc_hdr *fch)
380 fcmd = fc->cmd_slots[token];
382 rsp = (fcp_rsp *) (fc->scsi_rsp_pool + fc->rsp_size * token);
398 fcp_cmd *cmd = fc->scsi_cmd_pool + token;
405 for (i = 0; i < fc->rsp_size; i+=4)
420 dma_unmap_sg(fc->dev, (struct scatterlist *)SCpnt->request_buffer,
424 dma_unmap_single(fc->dev, fcmd->data, SCpnt->request_bufflen,
435 printk ("%s: (%d,%d) Received rsp_status 0x%x\n", fc->name, SCpnt->device->channel, SCpnt->device->id, rsp_status);
445 clear_bit(token, fc->scsi_bitmap);
446 fc->scsi_free++;
451 void fcp_receive_solicited(fc_channel *fc, int proto, int token, int status, fc_hdr *fch)
457 fcp_scsi_receive(fc, token, status, fch); break;
461 if (fc->ls)
462 magic = ((ls *)(fc->ls))->magic;
464 ls *l = (ls *)fc->ls;
468 if ((unsigned)i < l->count && l->fcmds[i].fc == fc) {
470 fcp_login_done(fc, token, status);
472 fcp_report_map_done(fc, token, status);
476 FCD(("fc %p fc->ls %p fc->cmd_slots %p\n", fc, fc->ls, fc->cmd_slots))
477 if (proto == TYPE_EXTENDED_LS && !fc->ls && fc->cmd_slots) {
480 fcmd = fc->cmd_slots[token];
490 if (fc->ls && ((lso *)(fc->ls))->magic == LSOMAGIC) {
491 lso *l = (lso *)fc->ls;
493 if ((unsigned)token < l->count && l->fcmds[token].fc == fc) {
496 fc->state = FC_STATE_OFFLINE;
508 void fcp_state_change(fc_channel *fc, int state)
510 FCD(("state_change %d %d\n", state, fc->state))
511 if (state == FC_STATE_ONLINE && fc->state == FC_STATE_MAYBEOFFLINE)
512 fc->state = FC_STATE_UNINITED;
514 printk (KERN_WARNING "%s: state change to ONLINE\n", fc->name);
516 printk (KERN_ERR "%s: state change to OFFLINE\n", fc->name);
521 fc_channel *fc;
551 for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++) {
552 fc->state = FC_STATE_UNINITED;
553 fc->rst_pkt = NULL; /* kmalloc when first used */
557 for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++) {
559 fc->login = fcmd;
560 fc->ls = (void *)l;
562 fcmd->cmd = dma_map_single (fc->dev, l->logi + 3 * i, 3 * sizeof(logi),
566 fcmd->fc = fc;
571 for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++) {
572 if (fc->state == FC_STATE_ONLINE || fc->state == FC_STATE_OFFLINE)
574 disable_irq(fc->irq);
575 if (fc->state == FC_STATE_MAYBEOFFLINE) {
580 fc->state = FC_STATE_OFFLINE;
581 enable_irq(fc->irq);
582 dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi), DMA_BIDIRECTIONAL);
587 ret = fc->hw_enque (fc, fc->login);
588 enable_irq(fc->irq);
593 if (ret == -ENOSYS && fc->login->proto == PROTO_REPORT_AL_MAP) {
597 FCD(("SID %d DID %d\n", fc->sid, fc->did))
599 dma_unmap_single(fc->dev, fcmd->cmd, 3 * sizeof(logi), DMA_BIDIRECTIONAL);
608 fcmd->cmd = dma_map_single (fc->dev, l->logi + 3 * i, 3 * sizeof(logi), DMA_BIDIRECTIONAL);
616 printk ("FC: Cannot enque FLOGI/REPORT_MAP packet on %s\n", fc->name);
626 break; /* All fc channels have answered us */
631 for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++) {
632 fc->ls = NULL;
633 switch (fc->state) {
636 default: dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi), DMA_BIDIRECTIONAL);
649 fc_channel *fc;
669 for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++) {
670 fc->state = FC_STATE_UNINITED;
672 fc->login = fcmd;
673 fc->ls = (void *)&l;
674 fcmd->did = fc->did;
678 fcmd->fc = fc;
679 disable_irq(fc->irq);
680 ret = fc->hw_enque (fc, fc->login);
681 enable_irq(fc->irq);
682 if (ret) printk ("FC: Cannot enque OFFLINE packet on %s\n", fc->name);
690 for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++)
691 fc->ls = NULL;
698 fc_channel *fc;
702 for (fc = fcchain; fc; fc = fc->next) {
703 fc->fcp_register = fcp_register;
714 for (fc = fc_channels; fc->next; fc = fc->next);
715 fc->next = fcchain;
722 fc_channel *fc;
725 for (fc = fcchain; --count && fc->next; fc = fc->next);
732 fc_channels = fc->next;
735 fcx->next = fc->next;
737 fc->next = NULL;
743 * Freeing the fc's is the low level driver's responsibility.
754 static int fcp_scsi_queue_it(fc_channel *fc, struct scsi_cmnd *SCpnt,
761 i = find_first_zero_bit (fc->scsi_bitmap, fc->scsi_bitmap_end);
762 set_bit (i, fc->scsi_bitmap);
764 cmd = fc->scsi_cmd_pool + i;
766 if (fc->encode_addr (SCpnt, cmd->fcp_addr, fc, fcmd)) {
768 clear_bit (i, fc->scsi_bitmap);
773 fc->scsi_free--;
774 fc->cmd_slots[fcmd->token] = fcmd;
777 if (jiffies - fc->ages[SCpnt->device->channel * fc->targets + SCpnt->device->id] > (5 * 60 * HZ)) {
778 fc->ages[SCpnt->device->channel * fc->targets + SCpnt->device->id] = jiffies;
798 fcmd->data = dma_map_single (fc->dev, (char *)SCpnt->request_buffer,
806 nents = dma_map_sg (fc->dev, sg, SCpnt->use_sg,
808 if (nents > 1) printk ("%s: SG for nents %d (use_sg %d) not handled yet\n", fc->name, nents, SCpnt->use_sg);
818 if (!fc->scsi_que) {
819 if (!fc->hw_enque (fc, fcmd)) {
825 fcp_scsi_insert_queue (fc, fcmd);
833 fc_channel *fc = FC_SCMND(SCpnt);
841 if (!fc->scsi_free) {
848 return fcp_scsi_queue_it(fc, SCpnt, fcmd, 1);
850 return fcp_scsi_queue_it(fc, SCpnt, fcmd, 0);
853 void fcp_queue_empty(fc_channel *fc)
858 while ((fcmd = fc->scsi_que)) {
860 if (fc->hw_enque (fc, fcmd))
862 fcp_scsi_remove_queue (fc, fcmd);
870 fc_channel *fc = FC_SCMND(SCpnt);
891 if (++fc->abort_count < (fc->can_queue >> 1)) {
912 fc_channel *fc = FC_SCMND(SCpnt);
918 for (i=0; i < fc->can_queue; i++) {
919 if (fc->cmd_slots[i] && SCpnt->result != DID_ABORT) {
922 fc->cmd_slots[i] = NULL;
925 fc->reset(fc);
926 fc->abort_count = 0;
927 if (fcp_initialize(fc, 1)) return SUCCESS;
943 static int fcp_els_queue_it(fc_channel *fc, fcp_cmnd *fcmd)
947 i = find_first_zero_bit (fc->scsi_bitmap, fc->scsi_bitmap_end);
948 set_bit (i, fc->scsi_bitmap);
950 fc->scsi_free--;
951 fc->cmd_slots[fcmd->token] = fcmd;
952 return fcp_scsi_queue_it(fc, NULL, fcmd, 0);
955 static int fc_do_els(fc_channel *fc, unsigned int alpa, void *data, int len)
964 FCD(("PLOGI SID %d DID %d\n", fc->sid, alpa))
967 FILL_FCHDR_SID(fch, fc->sid);
972 fcmd->cmd = dma_map_single (fc->dev, data, 2 * len, DMA_BIDIRECTIONAL);
977 fcmd->fc = fc;
989 disable_irq(fc->irq);
990 fcp_els_queue_it(fc, fcmd);
991 enable_irq(fc->irq);
1000 disable_irq(fc->irq);
1001 fcp_scsi_queue_it(fc, NULL, fcmd, 0);
1002 enable_irq(fc->irq);
1005 clear_bit(fcmd->token, fc->scsi_bitmap);
1006 fc->scsi_free++;
1007 dma_unmap_single (fc->dev, fcmd->cmd, 2 * len, DMA_BIDIRECTIONAL);
1011 int fc_do_plogi(fc_channel *fc, unsigned char alpa, fc_wwn *node, fc_wwn *nport)
1019 memcpy (&l->nport_wwn, &fc->wwn_nport, sizeof(fc_wwn));
1020 memcpy (&l->node_wwn, &fc->wwn_node, sizeof(fc_wwn));
1021 memcpy (&l->common, fc->common_svc, sizeof(common_svc_parm));
1022 memcpy (&l->class1, fc->class_svcs, 3*sizeof(svc_parm));
1023 status = fc_do_els(fc, alpa, l, sizeof(logi));
1045 int fc_do_prli(fc_channel *fc, unsigned char alpa)
1055 status = fc_do_els(fc, alpa, p, sizeof(prli));