Linux-2.6.12-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!
diff --git a/drivers/fc4/fc.c b/drivers/fc4/fc.c
new file mode 100644
index 0000000..1fbb219
--- /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");
+