Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1158 insertions, 0 deletions

diff --git a/drivers/fc4/fc.c b/drivers/fc4/fc.c
new file mode 100644
index 00000000000..1fbb219aa9b
--- /dev/null
+++ b/drivers/fc4/fc.c
@@ -0,0 +1,1158 @@
+/* fc.c: Generic Fibre Channel and FC4 SCSI driver.
+ *
+ * Copyright (C) 1997,1998,1999 Jakub Jelinek (jj@ultra.linux.cz)
+ * Copyright (C) 1997,1998 Jirka Hanika (geo@ff.cuni.cz)
+ *
+ * There are two kinds of Fibre Channel adapters used in Linux. Either
+ * the adapter is "smart" and does all FC bookkeeping by itself and
+ * just presents a standard SCSI interface to the operating system
+ * (that's e.g. the case with Qlogic FC cards), or leaves most of the FC
+ * bookkeeping to the OS (e.g. soc, socal). Drivers for the former adapters
+ * will look like normal SCSI drivers (with the exception of max_id will be
+ * usually 127), the latter on the other side allows SCSI, IP over FC and other
+ * protocols. This driver tree is for the latter adapters.
+ *
+ * This file should support both Point-to-Point and Arbitrated Loop topologies.
+ *
+ * Sources:
+ *	Fibre Channel Physical & Signaling Interface (FC-PH), dpANS, 1994
+ *	dpANS Fibre Channel Protocol for SCSI (X3.269-199X), Rev. 012, 1995
+ *	Fibre Channel Arbitrated Loop (FC-AL), Rev. 4.5, 1995
+ *	Fibre Channel Private Loop SCSI Direct Attach (FC-PLDA), Rev. 2.1, 1997
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/jiffies.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/init.h>
+
+#include <asm/pgtable.h>
+#include <asm/irq.h>
+#include <asm/semaphore.h>
+#include "fcp_impl.h"
+#include <scsi/scsi_host.h>
+
+/* #define FCDEBUG */
+
+#define fc_printk printk ("%s: ", fc->name); printk 
+
+#ifdef FCDEBUG
+#define FCD(x)  fc_printk x;
+#define FCND(x)	printk ("FC: "); printk x;
+#else
+#define FCD(x)
+#define FCND(x)
+#endif
+
+#ifdef __sparc__
+#define dma_alloc_consistent(d,s,p) sbus_alloc_consistent(d,s,p)
+#define dma_free_consistent(d,s,v,h) sbus_free_consistent(d,s,v,h)
+#define dma_map_single(d,v,s,dir) sbus_map_single(d,v,s,dir)
+#define dma_unmap_single(d,h,s,dir) sbus_unmap_single(d,h,s,dir)
+#define dma_map_sg(d,s,n,dir) sbus_map_sg(d,s,n,dir)
+#define dma_unmap_sg(d,s,n,dir) sbus_unmap_sg(d,s,n,dir)
+#else
+#define dma_alloc_consistent(d,s,p) pci_alloc_consistent(d,s,p)
+#define dma_free_consistent(d,s,v,h) pci_free_consistent(d,s,v,h)
+#define dma_map_single(d,v,s,dir) pci_map_single(d,v,s,dir)
+#define dma_unmap_single(d,h,s,dir) pci_unmap_single(d,h,s,dir)
+#define dma_map_sg(d,s,n,dir) pci_map_sg(d,s,n,dir)
+#define dma_unmap_sg(d,s,n,dir) pci_unmap_sg(d,s,n,dir)
+#endif							       
+
+#define FCP_CMND(SCpnt) ((fcp_cmnd *)&(SCpnt->SCp))
+#define FC_SCMND(SCpnt) ((fc_channel *)(SCpnt->device->host->hostdata[0]))
+#define SC_FCMND(fcmnd) ((Scsi_Cmnd *)((long)fcmnd - (long)&(((Scsi_Cmnd *)0)->SCp)))
+
+static int fcp_scsi_queue_it(fc_channel *, Scsi_Cmnd *, fcp_cmnd *, int);
+void fcp_queue_empty(fc_channel *);
+
+static void fcp_scsi_insert_queue (fc_channel *fc, fcp_cmnd *fcmd)
+{
+	if (!fc->scsi_que) {
+		fc->scsi_que = fcmd;
+		fcmd->next = fcmd;
+		fcmd->prev = fcmd;
+	} else {
+		fc->scsi_que->prev->next = fcmd;
+		fcmd->prev = fc->scsi_que->prev;
+		fc->scsi_que->prev = fcmd;
+		fcmd->next = fc->scsi_que;
+	}
+}
+
+static void fcp_scsi_remove_queue (fc_channel *fc, fcp_cmnd *fcmd)
+{
+	if (fcmd == fcmd->next) {
+		fc->scsi_que = NULL;
+		return;
+	}
+	if (fcmd == fc->scsi_que)
+		fc->scsi_que = fcmd->next;
+	fcmd->prev->next = fcmd->next;
+	fcmd->next->prev = fcmd->prev;
+}
+
+fc_channel *fc_channels = NULL;
+
+#define LSMAGIC	620829043
+typedef struct {
+	/* Must be first */
+	struct semaphore sem;
+	int magic;
+	int count;
+	logi *logi;
+	fcp_cmnd *fcmds;
+	atomic_t todo;
+	struct timer_list timer;
+	unsigned char grace[0];
+} ls;
+
+#define LSOMAGIC 654907799
+typedef struct {
+	/* Must be first */
+	struct semaphore sem;
+	int magic;
+	int count;
+	fcp_cmnd *fcmds;
+	atomic_t todo;
+	struct timer_list timer;
+} lso;
+
+#define LSEMAGIC 84482456
+typedef struct {
+	/* Must be first */
+	struct semaphore sem;
+	int magic;
+	int status;
+	struct timer_list timer;
+} lse;
+
+static void fcp_login_timeout(unsigned long data)
+{
+	ls *l = (ls *)data;
+	FCND(("Login timeout\n"))
+	up(&l->sem);
+}
+
+static void fcp_login_done(fc_channel *fc, int i, int status)
+{
+	fcp_cmnd *fcmd;
+	logi *plogi;
+	fc_hdr *fch;
+	ls *l = (ls *)fc->ls;
+	
+	FCD(("Login done %d %d\n", i, status))
+	if (i < l->count) {
+		if (fc->state == FC_STATE_FPORT_OK) {
+			FCD(("Additional FPORT_OK received with status %d\n", status))
+			return;
+		}
+		switch (status) {
+		case FC_STATUS_OK: /* Oh, we found a fabric */
+		case FC_STATUS_P_RJT: /* Oh, we haven't found any */
+			fc->state = FC_STATE_FPORT_OK;
+			fcmd = l->fcmds + i;
+			plogi = l->logi + 3 * i;
+			dma_unmap_single (fc->dev, fcmd->cmd, 3 * sizeof(logi),
+					  DMA_BIDIRECTIONAL);
+			plogi->code = LS_PLOGI;
+			memcpy (&plogi->nport_wwn, &fc->wwn_nport, sizeof(fc_wwn));
+			memcpy (&plogi->node_wwn, &fc->wwn_node, sizeof(fc_wwn));
+			memcpy (&plogi->common, fc->common_svc, sizeof(common_svc_parm));
+			memcpy (&plogi->class1, fc->class_svcs, 3*sizeof(svc_parm));
+			fch = &fcmd->fch;
+			fcmd->token += l->count;
+			FILL_FCHDR_RCTL_DID(fch, R_CTL_ELS_REQ, fc->did);
+			FILL_FCHDR_SID(fch, fc->sid);
+#ifdef FCDEBUG
+			{
+				int i;
+				unsigned *x = (unsigned *)plogi;
+				printk ("logi: ");
+				for (i = 0; i < 21; i++)
+					printk ("%08x ", x[i]);
+				printk ("\n");
+			}
+#endif			
+			fcmd->cmd = dma_map_single (fc->dev, plogi, 3 * sizeof(logi),
+						    DMA_BIDIRECTIONAL);
+			fcmd->rsp = fcmd->cmd + 2 * sizeof(logi);
+			if (fc->hw_enque (fc, fcmd))
+				printk ("FC: Cannot enque PLOGI packet on %s\n", fc->name);
+			break;
+		case FC_STATUS_ERR_OFFLINE:
+			fc->state = FC_STATE_MAYBEOFFLINE;
+			FCD (("FC is offline %d\n", l->grace[i]))
+			break;
+		default:
+			printk ("FLOGI failed for %s with status %d\n", fc->name, status);
+			/* Do some sort of error recovery here */
+			break;
+		}
+	} else {
+		i -= l->count;
+		if (fc->state != FC_STATE_FPORT_OK) {
+			FCD(("Unexpected N-PORT rsp received"))
+			return;
+		}
+		switch (status) {
+		case FC_STATUS_OK:
+			plogi = l->logi + 3 * i;
+			dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi),
+					  DMA_BIDIRECTIONAL);
+			if (!fc->wwn_dest.lo && !fc->wwn_dest.hi) {
+				memcpy (&fc->wwn_dest, &plogi[1].node_wwn, sizeof(fc_wwn)); 
+				FCD(("Dest WWN %08x%08x\n", *(u32 *)&fc->wwn_dest, fc->wwn_dest.lo))
+			} else if (fc->wwn_dest.lo != plogi[1].node_wwn.lo ||
+				   fc->wwn_dest.hi != plogi[1].node_wwn.hi) {
+				printk ("%s: mismatch in wwns. Got %08x%08x, expected %08x%08x\n",
+					fc->name,
+					*(u32 *)&plogi[1].node_wwn, plogi[1].node_wwn.lo,
+					*(u32 *)&fc->wwn_dest, fc->wwn_dest.lo);
+			}
+			fc->state = FC_STATE_ONLINE;
+			printk ("%s: ONLINE\n", fc->name);
+			if (atomic_dec_and_test (&l->todo))
+				up(&l->sem);
+			break;
+		case FC_STATUS_ERR_OFFLINE:
+			fc->state = FC_STATE_OFFLINE;
+			dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi),
+					  DMA_BIDIRECTIONAL);
+			printk ("%s: FC is offline\n", fc->name);
+			if (atomic_dec_and_test (&l->todo))
+				up(&l->sem);
+			break;
+		default:
+			printk ("PLOGI failed for %s with status %d\n", fc->name, status);
+			/* Do some sort of error recovery here */
+			break;
+		}
+	}
+}
+
+static void fcp_report_map_done(fc_channel *fc, int i, int status)
+{
+	fcp_cmnd *fcmd;
+	fc_hdr *fch;
+	unsigned char j;
+	ls *l = (ls *)fc->ls;
+	fc_al_posmap *p;
+	
+	FCD(("Report map done %d %d\n", i, status))
+	switch (status) {
+	case FC_STATUS_OK: /* Ok, let's have a fun on a loop */
+		dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi),
+				  DMA_BIDIRECTIONAL);
+		p = (fc_al_posmap *)(l->logi + 3 * i);
+#ifdef FCDEBUG
+		{
+		u32 *u = (u32 *)p;
+		FCD(("%08x\n", u[0]))
+		u ++;
+		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]))
+		}
+#endif		
+		if ((p->magic & 0xffff0000) != FC_AL_LILP || !p->len) {
+			printk ("FC: Bad magic from REPORT_AL_MAP on %s - %08x\n", fc->name, p->magic);
+			fc->state = FC_STATE_OFFLINE;
+		} else {
+			fc->posmap = (fcp_posmap *)kmalloc(sizeof(fcp_posmap)+p->len, GFP_KERNEL);
+			if (!fc->posmap) {
+				printk("FC: Not enough memory, offlining channel\n");
+				fc->state = FC_STATE_OFFLINE;
+			} else {
+				int k;
+				memset(fc->posmap, 0, sizeof(fcp_posmap)+p->len);
+				/* FIXME: This is where SOCAL transfers our AL-PA.
+				   Keep it here till we found out what other cards do... */
+				fc->sid = (p->magic & 0xff);
+				for (i = 0; i < p->len; i++)
+					if (p->alpa[i] == fc->sid)
+						break;
+				k = p->len;
+				if (i == p->len)
+					i = 0;
+				else {
+					p->len--;
+					i++;
+				}
+				fc->posmap->len = p->len;
+				for (j = 0; j < p->len; j++) {
+					if (i == k) i = 0;
+					fc->posmap->list[j] = p->alpa[i++];
+				}
+				fc->state = FC_STATE_ONLINE;
+			}
+		}
+		printk ("%s: ONLINE\n", fc->name);
+		if (atomic_dec_and_test (&l->todo))
+			up(&l->sem);
+		break;
+	case FC_STATUS_POINTTOPOINT: /* We're Point-to-Point, no AL... */
+		FCD(("SID %d DID %d\n", fc->sid, fc->did))
+		fcmd = l->fcmds + i;
+		dma_unmap_single(fc->dev, fcmd->cmd, 3 * sizeof(logi),
+				 DMA_BIDIRECTIONAL);
+		fch = &fcmd->fch;
+		memset(l->logi + 3 * i, 0, 3 * sizeof(logi));
+		FILL_FCHDR_RCTL_DID(fch, R_CTL_ELS_REQ, FS_FABRIC_F_PORT);
+		FILL_FCHDR_SID(fch, 0);
+		FILL_FCHDR_TYPE_FCTL(fch, TYPE_EXTENDED_LS, F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE);
+		FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0);
+		FILL_FCHDR_OXRX(fch, 0xffff, 0xffff);
+		fch->param = 0;
+		l->logi [3 * i].code = LS_FLOGI;
+		fcmd->cmd = dma_map_single (fc->dev, l->logi + 3 * i, 3 * sizeof(logi),
+					    DMA_BIDIRECTIONAL);
+		fcmd->rsp = fcmd->cmd + sizeof(logi);
+		fcmd->cmdlen = sizeof(logi);
+		fcmd->rsplen = sizeof(logi);
+		fcmd->data = (dma_addr_t)NULL;
+		fcmd->class = FC_CLASS_SIMPLE;
+		fcmd->proto = TYPE_EXTENDED_LS;
+		if (fc->hw_enque (fc, fcmd))
+			printk ("FC: Cannot enque FLOGI packet on %s\n", fc->name);
+		break;
+	case FC_STATUS_ERR_OFFLINE:
+		fc->state = FC_STATE_MAYBEOFFLINE;
+		FCD (("FC is offline %d\n", l->grace[i]))
+		break;
+	default:
+		printk ("FLOGI failed for %s with status %d\n", fc->name, status);
+		/* Do some sort of error recovery here */
+		break;
+	}
+}
+
+void fcp_register(fc_channel *fc, u8 type, int unregister)
+{
+	int size, i;
+	int slots = (fc->can_queue * 3) >> 1;
+
+	FCND(("Going to %sregister\n", unregister ? "un" : ""))
+
+	if (type == TYPE_SCSI_FCP) {
+		if (!unregister) {
+			fc->scsi_cmd_pool = (fcp_cmd *)
+				dma_alloc_consistent (fc->dev,
+						      slots * (sizeof (fcp_cmd) + fc->rsp_size),
+						      &fc->dma_scsi_cmd);
+			fc->scsi_rsp_pool = (char *)(fc->scsi_cmd_pool + slots);
+			fc->dma_scsi_rsp = fc->dma_scsi_cmd + slots * sizeof (fcp_cmd);
+			fc->scsi_bitmap_end = (slots + 63) & ~63;
+			size = fc->scsi_bitmap_end / 8;
+			fc->scsi_bitmap = kmalloc (size, GFP_KERNEL);
+			memset (fc->scsi_bitmap, 0, size);
+			set_bit (0, fc->scsi_bitmap);
+			for (i = fc->can_queue; i < fc->scsi_bitmap_end; i++)
+				set_bit (i, fc->scsi_bitmap);
+			fc->scsi_free = fc->can_queue;
+			fc->cmd_slots = (fcp_cmnd **)kmalloc(slots * sizeof(fcp_cmnd*), GFP_KERNEL);
+			memset(fc->cmd_slots, 0, slots * sizeof(fcp_cmnd*));
+			fc->abort_count = 0;
+		} else {
+			fc->scsi_name[0] = 0;
+			kfree (fc->scsi_bitmap);
+			kfree (fc->cmd_slots);
+			FCND(("Unregistering\n"));
+			if (fc->rst_pkt) {
+				if (fc->rst_pkt->eh_state == SCSI_STATE_UNUSED)
+					kfree(fc->rst_pkt);
+				else {
+					/* Can't happen. Some memory would be lost. */
+					printk("FC: Reset in progress. Now?!");
+				}
+			}
+			FCND(("Unregistered\n"));
+		}
+	} else
+		printk ("FC: %segistering unknown type %02x\n", unregister ? "Unr" : "R", type);
+}
+
+static void fcp_scsi_done(Scsi_Cmnd *SCpnt);
+
+static inline void fcp_scsi_receive(fc_channel *fc, int token, int status, fc_hdr *fch)
+{
+	fcp_cmnd *fcmd;
+	fcp_rsp  *rsp;
+	int host_status;
+	Scsi_Cmnd *SCpnt;
+	int sense_len;
+	int rsp_status;
+
+	fcmd = fc->cmd_slots[token];
+	if (!fcmd) return;
+	rsp = (fcp_rsp *) (fc->scsi_rsp_pool + fc->rsp_size * token);
+	SCpnt = SC_FCMND(fcmd);
+
+	if (SCpnt->done != fcp_scsi_done)
+		return;
+
+	rsp_status = rsp->fcp_status;
+	FCD(("rsp_status %08x status %08x\n", rsp_status, status))
+	switch (status) {
+	case FC_STATUS_OK:
+		host_status=DID_OK;
+		
+		if (rsp_status & FCP_STATUS_RESID) {
+#ifdef FCDEBUG
+			FCD(("Resid %d\n", rsp->fcp_resid))
+			{
+				fcp_cmd *cmd = fc->scsi_cmd_pool + token;
+				int i;
+				
+				printk ("Command ");
+				for (i = 0; i < sizeof(fcp_cmd); i+=4)
+					printk ("%08x ", *(u32 *)(((char *)cmd)+i));
+				printk ("\nResponse ");
+				for (i = 0; i < fc->rsp_size; i+=4)
+					printk ("%08x ", *(u32 *)(((char *)rsp)+i));
+				printk ("\n");
+			}
+#endif			
+		}
+
+		if (rsp_status & FCP_STATUS_SENSE_LEN) {
+			sense_len = rsp->fcp_sense_len;
+			if (sense_len > sizeof(SCpnt->sense_buffer)) sense_len = sizeof(SCpnt->sense_buffer);
+			memcpy(SCpnt->sense_buffer, ((char *)(rsp+1)), sense_len);
+		}
+		
+		if (fcmd->data) {
+			if (SCpnt->use_sg)
+				dma_unmap_sg(fc->dev, (struct scatterlist *)SCpnt->buffer,
+						SCpnt->use_sg,
+						SCpnt->sc_data_direction);
+			else
+				dma_unmap_single(fc->dev, fcmd->data, SCpnt->request_bufflen,
+						 SCpnt->sc_data_direction);
+		}
+		break;
+	default:
+		host_status=DID_ERROR; /* FIXME */
+		FCD(("Wrong FC status %d for token %d\n", status, token))
+		break;
+	}
+
+	if (status_byte(rsp_status) == QUEUE_FULL) {
+		printk ("%s: (%d,%d) Received rsp_status 0x%x\n", fc->name, SCpnt->device->channel, SCpnt->device->id, rsp_status);
+	}	
+	
+	SCpnt->result = (host_status << 16) | (rsp_status & 0xff);
+#ifdef FCDEBUG	
+	if (host_status || SCpnt->result || rsp_status) printk("FC: host_status %d, packet status %d\n",
+			host_status, SCpnt->result);
+#endif
+	SCpnt->done = fcmd->done;
+	fcmd->done=NULL;
+	clear_bit(token, fc->scsi_bitmap);
+	fc->scsi_free++;
+	FCD(("Calling scsi_done with %08x\n", SCpnt->result))
+	SCpnt->scsi_done(SCpnt);
+}
+
+void fcp_receive_solicited(fc_channel *fc, int proto, int token, int status, fc_hdr *fch)
+{
+	int magic;
+	FCD(("receive_solicited %d %d %d\n", proto, token, status))
+	switch (proto) {
+	case TYPE_SCSI_FCP:
+		fcp_scsi_receive(fc, token, status, fch); break;
+	case TYPE_EXTENDED_LS:
+	case PROTO_REPORT_AL_MAP:
+		magic = 0;
+		if (fc->ls)
+			magic = ((ls *)(fc->ls))->magic;
+		if (magic == LSMAGIC) {
+			ls *l = (ls *)fc->ls;
+			int i = (token >= l->count) ? token - l->count : token;
+
+			/* Let's be sure */
+			if ((unsigned)i < l->count && l->fcmds[i].fc == fc) {
+				if (proto == TYPE_EXTENDED_LS)
+					fcp_login_done(fc, token, status);
+				else
+					fcp_report_map_done(fc, token, status);
+				break;
+			}
+		}
+		FCD(("fc %p fc->ls %p fc->cmd_slots %p\n", fc, fc->ls, fc->cmd_slots))
+		if (proto == TYPE_EXTENDED_LS && !fc->ls && fc->cmd_slots) {
+			fcp_cmnd *fcmd;
+			
+			fcmd = fc->cmd_slots[token];
+			if (fcmd && fcmd->ls && ((ls *)(fcmd->ls))->magic == LSEMAGIC) {
+				lse *l = (lse *)fcmd->ls;
+				
+				l->status = status;
+				up (&l->sem);
+			}
+		}
+		break;
+	case PROTO_OFFLINE:
+		if (fc->ls && ((lso *)(fc->ls))->magic == LSOMAGIC) {
+			lso *l = (lso *)fc->ls;
+
+			if ((unsigned)token < l->count && l->fcmds[token].fc == fc) {
+				/* Wow, OFFLINE response arrived :) */
+				FCD(("OFFLINE Response arrived\n"))
+				fc->state = FC_STATE_OFFLINE;
+				if (atomic_dec_and_test (&l->todo))
+					up(&l->sem);
+			}
+		}
+		break;
+		
+	default:
+		break;
+	}
+}
+
+void fcp_state_change(fc_channel *fc, int state)
+{
+	FCD(("state_change %d %d\n", state, fc->state))
+	if (state == FC_STATE_ONLINE && fc->state == FC_STATE_MAYBEOFFLINE)
+		fc->state = FC_STATE_UNINITED;
+	else if (state == FC_STATE_ONLINE)
+		printk (KERN_WARNING "%s: state change to ONLINE\n", fc->name);
+	else
+		printk (KERN_ERR "%s: state change to OFFLINE\n", fc->name);
+}
+
+int fcp_initialize(fc_channel *fcchain, int count)
+{
+	fc_channel *fc;
+	fcp_cmnd *fcmd;
+	int i, retry, ret;
+	ls *l;
+
+	FCND(("fcp_inititialize %08lx\n", (long)fcp_init))
+	FCND(("fc_channels %08lx\n", (long)fc_channels))
+	FCND((" SID %d DID %d\n", fcchain->sid, fcchain->did))
+	l = kmalloc(sizeof (ls) + count, GFP_KERNEL);
+	if (!l) {
+		printk ("FC: Cannot allocate memory for initialization\n");
+		return -ENOMEM;
+	}
+	memset (l, 0, sizeof(ls) + count);
+	l->magic = LSMAGIC;
+	l->count = count;
+	FCND(("FCP Init for %d channels\n", count))
+	init_MUTEX_LOCKED(&l->sem);
+	init_timer(&l->timer);
+	l->timer.function = fcp_login_timeout;
+	l->timer.data = (unsigned long)l;
+	atomic_set (&l->todo, count);
+	l->logi = kmalloc (count * 3 * sizeof(logi), GFP_KERNEL);
+	l->fcmds = kmalloc (count * sizeof(fcp_cmnd), GFP_KERNEL);
+	if (!l->logi || !l->fcmds) {
+		if (l->logi) kfree (l->logi);
+		if (l->fcmds) kfree (l->fcmds);
+		kfree (l);
+		printk ("FC: Cannot allocate DMA memory for initialization\n");
+		return -ENOMEM;
+	}
+	memset (l->logi, 0, count * 3 * sizeof(logi));
+	memset (l->fcmds, 0, count * sizeof(fcp_cmnd));
+	for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++) {
+		fc->state = FC_STATE_UNINITED;
+		fc->rst_pkt = NULL;	/* kmalloc when first used */
+	}
+	/* First try if we are in a AL topology */
+	FCND(("Initializing REPORT_MAP packets\n"))
+	for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++) {
+		fcmd = l->fcmds + i;
+		fc->login = fcmd;
+		fc->ls = (void *)l;
+		/* Assumes sizeof(fc_al_posmap) < 3 * sizeof(logi), which is true */
+		fcmd->cmd = dma_map_single (fc->dev, l->logi + 3 * i, 3 * sizeof(logi),
+					    DMA_BIDIRECTIONAL);
+		fcmd->proto = PROTO_REPORT_AL_MAP;
+		fcmd->token = i;
+		fcmd->fc = fc;
+	}
+	for (retry = 0; retry < 8; retry++) {
+		int nqueued = 0;
+		FCND(("Sending REPORT_MAP/FLOGI/PLOGI packets\n"))
+		for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++) {
+			if (fc->state == FC_STATE_ONLINE || fc->state == FC_STATE_OFFLINE)
+				continue;
+			disable_irq(fc->irq);
+			if (fc->state == FC_STATE_MAYBEOFFLINE) {
+				if (!l->grace[i]) {
+					l->grace[i]++;
+					FCD(("Grace\n"))
+				} else {
+					fc->state = FC_STATE_OFFLINE;
+					enable_irq(fc->irq);
+					dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi), DMA_BIDIRECTIONAL);
+					if (atomic_dec_and_test (&l->todo))
+						goto all_done;
+				}
+			}
+			ret = fc->hw_enque (fc, fc->login);
+			enable_irq(fc->irq);
+			if (!ret) {
+				nqueued++;
+				continue;
+			}
+			if (ret == -ENOSYS && fc->login->proto == PROTO_REPORT_AL_MAP) {
+				/* Oh yes, this card handles Point-to-Point only, so let's try that. */
+				fc_hdr *fch;
+
+				FCD(("SID %d DID %d\n", fc->sid, fc->did))
+				fcmd = l->fcmds + i;
+				dma_unmap_single(fc->dev, fcmd->cmd, 3 * sizeof(logi), DMA_BIDIRECTIONAL);
+				fch = &fcmd->fch;
+				FILL_FCHDR_RCTL_DID(fch, R_CTL_ELS_REQ, FS_FABRIC_F_PORT);
+				FILL_FCHDR_SID(fch, 0);
+				FILL_FCHDR_TYPE_FCTL(fch, TYPE_EXTENDED_LS, F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE);
+				FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0);
+				FILL_FCHDR_OXRX(fch, 0xffff, 0xffff);
+				fch->param = 0;
+				l->logi [3 * i].code = LS_FLOGI;
+				fcmd->cmd = dma_map_single (fc->dev, l->logi + 3 * i, 3 * sizeof(logi), DMA_BIDIRECTIONAL);
+				fcmd->rsp = fcmd->cmd + sizeof(logi);
+				fcmd->cmdlen = sizeof(logi);
+				fcmd->rsplen = sizeof(logi);
+				fcmd->data = (dma_addr_t)NULL;
+				fcmd->class = FC_CLASS_SIMPLE;
+				fcmd->proto = TYPE_EXTENDED_LS;
+			} else
+				printk ("FC: Cannot enque FLOGI/REPORT_MAP packet on %s\n", fc->name);
+		}
+		
+		if (nqueued) {
+			l->timer.expires = jiffies + 5 * HZ;
+			add_timer(&l->timer);
+
+			down(&l->sem);
+			if (!atomic_read(&l->todo)) {
+				FCND(("All channels answered in time\n"))
+				break; /* All fc channels have answered us */
+			}
+		}
+	}
+all_done:
+	for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++) {
+		fc->ls = NULL;
+		switch (fc->state) {
+		case FC_STATE_ONLINE: break;
+		case FC_STATE_OFFLINE: break;
+		default: dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi), DMA_BIDIRECTIONAL);
+			break;
+		}
+	}
+	del_timer(&l->timer);
+	kfree (l->logi);
+	kfree (l->fcmds);
+	kfree (l);
+	return 0;
+}
+
+int fcp_forceoffline(fc_channel *fcchain, int count)
+{
+	fc_channel *fc;
+	fcp_cmnd *fcmd;
+	int i, ret;
+	lso l;
+
+	memset (&l, 0, sizeof(lso));
+	l.count = count;
+	l.magic = LSOMAGIC;
+	FCND(("FCP Force Offline for %d channels\n", count))
+	init_MUTEX_LOCKED(&l.sem);
+	init_timer(&l.timer);
+	l.timer.function = fcp_login_timeout;
+	l.timer.data = (unsigned long)&l;
+	atomic_set (&l.todo, count);
+	l.fcmds = kmalloc (count * sizeof(fcp_cmnd), GFP_KERNEL);
+	if (!l.fcmds) {
+		kfree (l.fcmds);
+		printk ("FC: Cannot allocate memory for forcing offline\n");
+		return -ENOMEM;
+	}
+	memset (l.fcmds, 0, count * sizeof(fcp_cmnd));
+	FCND(("Initializing OFFLINE packets\n"))
+	for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++) {
+		fc->state = FC_STATE_UNINITED;
+		fcmd = l.fcmds + i;
+		fc->login = fcmd;
+		fc->ls = (void *)&l;
+		fcmd->did = fc->did;
+		fcmd->class = FC_CLASS_OFFLINE;
+		fcmd->proto = PROTO_OFFLINE;
+		fcmd->token = i;
+		fcmd->fc = fc;
+		disable_irq(fc->irq);
+		ret = fc->hw_enque (fc, fc->login);
+		enable_irq(fc->irq);
+		if (ret) printk ("FC: Cannot enque OFFLINE packet on %s\n", fc->name);
+	}
+		
+	l.timer.expires = jiffies + 5 * HZ;
+	add_timer(&l.timer);
+	down(&l.sem);
+	del_timer(&l.timer);
+	
+	for (fc = fcchain, i = 0; fc && i < count; fc = fc->next, i++)
+		fc->ls = NULL;
+	kfree (l.fcmds);
+	return 0;
+}
+
+int fcp_init(fc_channel *fcchain)
+{
+	fc_channel *fc;
+	int count=0;
+	int ret;
+	
+	for (fc = fcchain; fc; fc = fc->next) {
+		fc->fcp_register = fcp_register;
+		count++;
+	}
+
+	ret = fcp_initialize (fcchain, count);
+	if (ret)
+		return ret;
+		
+	if (!fc_channels)
+		fc_channels = fcchain;
+	else {
+		for (fc = fc_channels; fc->next; fc = fc->next);
+		fc->next = fcchain;
+	}
+	return ret;
+}
+
+void fcp_release(fc_channel *fcchain, int count)  /* count must > 0 */
+{
+	fc_channel *fc;
+	fc_channel *fcx;
+
+	for (fc = fcchain; --count && fc->next; fc = fc->next);
+	if (count) {
+		printk("FC: nothing to release\n");
+		return;
+	}
+	
+	if (fc_channels == fcchain)
+		fc_channels = fc->next;
+	else {
+		for (fcx = fc_channels; fcx->next != fcchain; fcx = fcx->next);
+		fcx->next = fc->next;
+	}
+	fc->next = NULL;
+
+	/*
+	 *  We've just grabbed fcchain out of the fc_channel list
+	 *  and zero-terminated it, while destroying the count.
+	 *
+	 *  Freeing the fc's is the low level driver's responsibility.
+	 */
+}
+
+
+static void fcp_scsi_done (Scsi_Cmnd *SCpnt)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(SCpnt->device->host->host_lock, flags);
+	if (FCP_CMND(SCpnt)->done)
+		FCP_CMND(SCpnt)->done(SCpnt);
+	spin_unlock_irqrestore(SCpnt->device->host->host_lock, flags);
+}
+
+static int fcp_scsi_queue_it(fc_channel *fc, Scsi_Cmnd *SCpnt, fcp_cmnd *fcmd, int prepare)
+{
+	long i;
+	fcp_cmd *cmd;
+	u32 fcp_cntl;
+	if (prepare) {
+		i = find_first_zero_bit (fc->scsi_bitmap, fc->scsi_bitmap_end);
+		set_bit (i, fc->scsi_bitmap);
+		fcmd->token = i;
+		cmd = fc->scsi_cmd_pool + i;
+
+		if (fc->encode_addr (SCpnt, cmd->fcp_addr, fc, fcmd)) {
+			/* Invalid channel/id/lun and couldn't map it into fcp_addr */
+			clear_bit (i, fc->scsi_bitmap);
+			SCpnt->result = (DID_BAD_TARGET << 16);
+			SCpnt->scsi_done(SCpnt);
+			return 0;
+		}
+		fc->scsi_free--;
+		fc->cmd_slots[fcmd->token] = fcmd;
+
+		if (SCpnt->device->tagged_supported) {
+			if (jiffies - fc->ages[SCpnt->device->channel * fc->targets + SCpnt->device->id] > (5 * 60 * HZ)) {
+				fc->ages[SCpnt->device->channel * fc->targets + SCpnt->device->id] = jiffies;
+				fcp_cntl = FCP_CNTL_QTYPE_ORDERED;
+			} else
+				fcp_cntl = FCP_CNTL_QTYPE_SIMPLE;
+		} else
+			fcp_cntl = FCP_CNTL_QTYPE_UNTAGGED;
+		if (!SCpnt->request_bufflen && !SCpnt->use_sg) {
+			cmd->fcp_cntl = fcp_cntl;
+			fcmd->data = (dma_addr_t)NULL;
+		} else {
+			switch (SCpnt->cmnd[0]) {
+			case WRITE_6:
+			case WRITE_10:
+			case WRITE_12:
+				cmd->fcp_cntl = (FCP_CNTL_WRITE | fcp_cntl); break;
+			default:
+				cmd->fcp_cntl = (FCP_CNTL_READ | fcp_cntl); break;
+			}
+			if (!SCpnt->use_sg) {
+				cmd->fcp_data_len = SCpnt->request_bufflen;
+				fcmd->data = dma_map_single (fc->dev, (char *)SCpnt->request_buffer,
+							     SCpnt->request_bufflen,
+							     SCpnt->sc_data_direction);
+			} else {
+				struct scatterlist *sg = (struct scatterlist *)SCpnt->buffer;
+				int nents;
+
+				FCD(("XXX: Use_sg %d %d\n", SCpnt->use_sg, sg->length))
+				nents = dma_map_sg (fc->dev, sg, SCpnt->use_sg,
+						    SCpnt->sc_data_direction);
+				if (nents > 1) printk ("%s: SG for nents %d (use_sg %d) not handled yet\n", fc->name, nents, SCpnt->use_sg);
+				fcmd->data = sg_dma_address(sg);
+				cmd->fcp_data_len = sg_dma_len(sg);
+			}
+		}
+		memcpy (cmd->fcp_cdb, SCpnt->cmnd, SCpnt->cmd_len);
+		memset (cmd->fcp_cdb+SCpnt->cmd_len, 0, sizeof(cmd->fcp_cdb)-SCpnt->cmd_len);
+		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)))
+	}
+	FCD(("Trying to enque %p\n", fcmd))
+	if (!fc->scsi_que) {
+		if (!fc->hw_enque (fc, fcmd)) {
+			FCD(("hw_enque succeeded for %p\n", fcmd))
+			return 0;
+		}
+	}
+	FCD(("Putting into que1 %p\n", fcmd))
+	fcp_scsi_insert_queue (fc, fcmd);
+	return 0;
+}
+
+int fcp_scsi_queuecommand(Scsi_Cmnd *SCpnt, void (* done)(Scsi_Cmnd *))
+{
+	fcp_cmnd *fcmd = FCP_CMND(SCpnt);
+	fc_channel *fc = FC_SCMND(SCpnt);
+	
+	FCD(("Entering SCSI queuecommand %p\n", fcmd))
+	if (SCpnt->done != fcp_scsi_done) {
+		fcmd->done = SCpnt->done;
+		SCpnt->done = fcp_scsi_done;
+		SCpnt->scsi_done = done;
+		fcmd->proto = TYPE_SCSI_FCP;
+		if (!fc->scsi_free) {
+			FCD(("FC: !scsi_free, putting cmd on ML queue\n"))
+#if (FCP_SCSI_USE_NEW_EH_CODE == 0)
+			printk("fcp_scsi_queue_command: queue full, losing cmd, bad\n");
+#endif
+			return 1;
+		}
+		return fcp_scsi_queue_it(fc, SCpnt, fcmd, 1);
+	}
+	return fcp_scsi_queue_it(fc, SCpnt, fcmd, 0);
+}
+
+void fcp_queue_empty(fc_channel *fc)
+{
+	fcp_cmnd *fcmd;
+	
+	FCD(("Queue empty\n"))
+	while ((fcmd = fc->scsi_que)) {
+		/* The hw told us we can try again queue some packet */
+		if (fc->hw_enque (fc, fcmd))
+			break;
+		fcp_scsi_remove_queue (fc, fcmd);
+	}
+}
+
+int fcp_scsi_abort(Scsi_Cmnd *SCpnt)
+{
+	/* Internal bookkeeping only. Lose 1 cmd_slots slot. */
+	fcp_cmnd *fcmd = FCP_CMND(SCpnt);
+	fc_channel *fc = FC_SCMND(SCpnt);
+	
+	/*
+	 * We react to abort requests by simply forgetting
+	 * about the command and pretending everything's sweet.
+	 * This may or may not be silly. We can't, however,
+	 * immediately reuse the command's cmd_slots slot,
+	 * as its result may arrive later and we cannot
+	 * check whether it is the aborted one, can't we?
+	 *
+	 * Therefore, after the first few aborts are done,
+	 * we tell the scsi error handler to do something clever.
+	 * It will eventually call host reset, refreshing
+	 * cmd_slots for us.
+	 *
+	 * There is a theoretical chance that we sometimes allow
+	 * more than can_queue packets to the jungle this way,
+	 * but the worst outcome possible is a series of
+	 * more aborts and eventually the dev_reset catharsis.
+	 */
+
+	if (++fc->abort_count < (fc->can_queue >> 1)) {
+		unsigned long flags;
+
+		SCpnt->result = DID_ABORT;
+		spin_lock_irqsave(SCpnt->device->host->host_lock, flags);
+		fcmd->done(SCpnt);
+		spin_unlock_irqrestore(SCpnt->device->host->host_lock, flags);
+		printk("FC: soft abort\n");
+		return SUCCESS;
+	} else {
+		printk("FC: hard abort refused\n");
+		return FAILED;
+	}
+}
+
+void fcp_scsi_reset_done(Scsi_Cmnd *SCpnt)
+{
+	fc_channel *fc = FC_SCMND(SCpnt);
+
+	fc->rst_pkt->eh_state = SCSI_STATE_FINISHED;
+	up(fc->rst_pkt->device->host->eh_action);
+}
+
+#define FCP_RESET_TIMEOUT (2*HZ)
+
+int fcp_scsi_dev_reset(Scsi_Cmnd *SCpnt)
+{
+	fcp_cmd *cmd;
+	fcp_cmnd *fcmd;
+	fc_channel *fc = FC_SCMND(SCpnt);
+        DECLARE_MUTEX_LOCKED(sem);
+
+	if (!fc->rst_pkt) {
+		fc->rst_pkt = (Scsi_Cmnd *) kmalloc(sizeof(SCpnt), GFP_KERNEL);
+		if (!fc->rst_pkt) return FAILED;
+		
+		fcmd = FCP_CMND(fc->rst_pkt);
+
+
+		fcmd->token = 0;
+		cmd = fc->scsi_cmd_pool + 0;
+		FCD(("Preparing rst packet\n"))
+		fc->encode_addr (SCpnt, cmd->fcp_addr, fc, fcmd);
+		fc->rst_pkt->device = SCpnt->device;
+		fc->rst_pkt->cmd_len = 0;
+		
+		fc->cmd_slots[0] = fcmd;
+
+		cmd->fcp_cntl = FCP_CNTL_QTYPE_ORDERED | FCP_CNTL_RESET;
+		fcmd->data = (dma_addr_t)NULL;
+		fcmd->proto = TYPE_SCSI_FCP;
+
+		memcpy (cmd->fcp_cdb, SCpnt->cmnd, SCpnt->cmd_len);
+		memset (cmd->fcp_cdb+SCpnt->cmd_len, 0, sizeof(cmd->fcp_cdb)-SCpnt->cmd_len);
+		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)))
+	} else {
+		fcmd = FCP_CMND(fc->rst_pkt);
+		if (fc->rst_pkt->eh_state == SCSI_STATE_QUEUED)
+			return FAILED; /* or SUCCESS. Only these */
+	}
+	fc->rst_pkt->done = NULL;
+
+
+        fc->rst_pkt->eh_state = SCSI_STATE_QUEUED;
+	init_timer(&fc->rst_pkt->eh_timeout);
+	fc->rst_pkt->eh_timeout.data = (unsigned long) fc->rst_pkt;
+	fc->rst_pkt->eh_timeout.expires = jiffies + FCP_RESET_TIMEOUT;
+	fc->rst_pkt->eh_timeout.function = (void (*)(unsigned long))fcp_scsi_reset_done;
+
+        add_timer(&fc->rst_pkt->eh_timeout);
+
+	/*
+	 * Set up the semaphore so we wait for the command to complete.
+	 */
+
+	fc->rst_pkt->device->host->eh_action = &sem;
+	fc->rst_pkt->request->rq_status = RQ_SCSI_BUSY;
+
+	fc->rst_pkt->done = fcp_scsi_reset_done;
+	fcp_scsi_queue_it(fc, fc->rst_pkt, fcmd, 0);
+	
+	down(&sem);
+
+	fc->rst_pkt->device->host->eh_action = NULL;
+	del_timer(&fc->rst_pkt->eh_timeout);
+
+	/*
+	 * See if timeout.  If so, tell the host to forget about it.
+	 * In other words, we don't want a callback any more.
+	 */
+	if (fc->rst_pkt->eh_state == SCSI_STATE_TIMEOUT ) {
+		fc->rst_pkt->eh_state = SCSI_STATE_UNUSED;
+		return FAILED;
+	}
+	fc->rst_pkt->eh_state = SCSI_STATE_UNUSED;
+	return SUCCESS;
+}
+
+int fcp_scsi_bus_reset(Scsi_Cmnd *SCpnt)
+{
+	printk ("FC: bus reset!\n");
+	return FAILED;
+}
+
+int fcp_scsi_host_reset(Scsi_Cmnd *SCpnt)
+{
+	fc_channel *fc = FC_SCMND(SCpnt);
+	fcp_cmnd *fcmd = FCP_CMND(SCpnt);
+	int i;
+
+	printk ("FC: host reset\n");
+
+	for (i=0; i < fc->can_queue; i++) {
+		if (fc->cmd_slots[i] && SCpnt->result != DID_ABORT) {
+			SCpnt->result = DID_RESET;
+			fcmd->done(SCpnt);
+			fc->cmd_slots[i] = NULL;
+		}
+	}
+	fc->reset(fc);
+	fc->abort_count = 0;
+	if (fcp_initialize(fc, 1)) return SUCCESS;
+	else return FAILED;
+}
+
+static int fcp_els_queue_it(fc_channel *fc, fcp_cmnd *fcmd)
+{
+	long i;
+
+	i = find_first_zero_bit (fc->scsi_bitmap, fc->scsi_bitmap_end);
+	set_bit (i, fc->scsi_bitmap);
+	fcmd->token = i;
+	fc->scsi_free--;
+	fc->cmd_slots[fcmd->token] = fcmd;
+	return fcp_scsi_queue_it(fc, NULL, fcmd, 0);
+}
+
+static int fc_do_els(fc_channel *fc, unsigned int alpa, void *data, int len)
+{
+	fcp_cmnd _fcmd, *fcmd;
+	fc_hdr *fch;
+	lse l;
+	int i;
+
+	fcmd = &_fcmd;
+	memset(fcmd, 0, sizeof(fcmd));
+	FCD(("PLOGI SID %d DID %d\n", fc->sid, alpa))
+	fch = &fcmd->fch;
+	FILL_FCHDR_RCTL_DID(fch, R_CTL_ELS_REQ, alpa);
+	FILL_FCHDR_SID(fch, fc->sid);
+	FILL_FCHDR_TYPE_FCTL(fch, TYPE_EXTENDED_LS, F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE);
+	FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0);
+	FILL_FCHDR_OXRX(fch, 0xffff, 0xffff);
+	fch->param = 0;
+	fcmd->cmd = dma_map_single (fc->dev, data, 2 * len, DMA_BIDIRECTIONAL);
+	fcmd->rsp = fcmd->cmd + len;
+	fcmd->cmdlen = len;
+	fcmd->rsplen = len;
+	fcmd->data = (dma_addr_t)NULL;
+	fcmd->fc = fc;
+	fcmd->class = FC_CLASS_SIMPLE;
+	fcmd->proto = TYPE_EXTENDED_LS;
+	
+	memset (&l, 0, sizeof(lse));
+	l.magic = LSEMAGIC;
+	init_MUTEX_LOCKED(&l.sem);
+	l.timer.function = fcp_login_timeout;
+	l.timer.data = (unsigned long)&l;
+	l.status = FC_STATUS_TIMED_OUT;
+	fcmd->ls = (void *)&l;
+
+	disable_irq(fc->irq);	
+	fcp_els_queue_it(fc, fcmd);
+	enable_irq(fc->irq);
+
+	for (i = 0;;) {
+		l.timer.expires = jiffies + 5 * HZ;
+		add_timer(&l.timer);
+		down(&l.sem);
+		del_timer(&l.timer);
+		if (l.status != FC_STATUS_TIMED_OUT) break;
+		if (++i == 3) break;
+		disable_irq(fc->irq);
+		fcp_scsi_queue_it(fc, NULL, fcmd, 0);
+		enable_irq(fc->irq);
+	}
+	
+	clear_bit(fcmd->token, fc->scsi_bitmap);
+	fc->scsi_free++;
+	dma_unmap_single (fc->dev, fcmd->cmd, 2 * len, DMA_BIDIRECTIONAL);
+	return l.status;
+}
+
+int fc_do_plogi(fc_channel *fc, unsigned char alpa, fc_wwn *node, fc_wwn *nport)
+{
+	logi *l;
+	int status;
+
+	l = (logi *)kmalloc(2 * sizeof(logi), GFP_KERNEL);
+	if (!l) return -ENOMEM;
+	memset(l, 0, 2 * sizeof(logi));
+	l->code = LS_PLOGI;
+	memcpy (&l->nport_wwn, &fc->wwn_nport, sizeof(fc_wwn));
+	memcpy (&l->node_wwn, &fc->wwn_node, sizeof(fc_wwn));
+	memcpy (&l->common, fc->common_svc, sizeof(common_svc_parm));
+	memcpy (&l->class1, fc->class_svcs, 3*sizeof(svc_parm));
+	status = fc_do_els(fc, alpa, l, sizeof(logi));
+	if (status == FC_STATUS_OK) {
+		if (l[1].code == LS_ACC) {
+#ifdef FCDEBUG
+			u32 *u = (u32 *)&l[1].nport_wwn;
+			FCD(("AL-PA %02x: Port WWN %08x%08x Node WWN %08x%08x\n", alpa, 
+				u[0], u[1], u[2], u[3]))
+#endif
+			memcpy(nport, &l[1].nport_wwn, sizeof(fc_wwn));
+			memcpy(node, &l[1].node_wwn, sizeof(fc_wwn));
+		} else
+			status = FC_STATUS_BAD_RSP;
+	}
+	kfree(l);
+	return status;
+}
+
+typedef struct {
+	unsigned int code;
+	unsigned params[4];
+} prli;
+
+int fc_do_prli(fc_channel *fc, unsigned char alpa)
+{
+	prli *p;
+	int status;
+
+	p = (prli *)kmalloc(2 * sizeof(prli), GFP_KERNEL);
+	if (!p) return -ENOMEM;
+	memset(p, 0, 2 * sizeof(prli));
+	p->code = LS_PRLI;
+	p->params[0] = 0x08002000;
+	p->params[3] = 0x00000022;
+	status = fc_do_els(fc, alpa, p, sizeof(prli));
+	if (status == FC_STATUS_OK && p[1].code != LS_PRLI_ACC && p[1].code != LS_ACC)
+		status = FC_STATUS_BAD_RSP;
+	kfree(p);
+	return status;
+}
+
+MODULE_LICENSE("GPL");
+