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1156 lines
32 KiB
1156 lines
32 KiB
/* fc.c: Generic Fibre Channel and FC4 SCSI driver.
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*
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* Copyright (C) 1997,1998,1999 Jakub Jelinek (jj@ultra.linux.cz)
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* Copyright (C) 1997,1998 Jirka Hanika (geo@ff.cuni.cz)
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*
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* There are two kinds of Fibre Channel adapters used in Linux. Either
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* the adapter is "smart" and does all FC bookkeeping by itself and
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* just presents a standard SCSI interface to the operating system
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* (that's e.g. the case with Qlogic FC cards), or leaves most of the FC
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* bookkeeping to the OS (e.g. soc, socal). Drivers for the former adapters
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* will look like normal SCSI drivers (with the exception of max_id will be
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* usually 127), the latter on the other side allows SCSI, IP over FC and other
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* protocols. This driver tree is for the latter adapters.
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*
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* This file should support both Point-to-Point and Arbitrated Loop topologies.
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*
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* Sources:
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* Fibre Channel Physical & Signaling Interface (FC-PH), dpANS, 1994
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* dpANS Fibre Channel Protocol for SCSI (X3.269-199X), Rev. 012, 1995
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* Fibre Channel Arbitrated Loop (FC-AL), Rev. 4.5, 1995
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* Fibre Channel Private Loop SCSI Direct Attach (FC-PLDA), Rev. 2.1, 1997
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/jiffies.h>
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#include <linux/types.h>
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#include <linux/fcntl.h>
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#include <linux/interrupt.h>
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#include <linux/ptrace.h>
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#include <linux/ioport.h>
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#include <linux/in.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/init.h>
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#include <asm/pgtable.h>
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#include <asm/irq.h>
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#include <asm/semaphore.h>
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#include "fcp_impl.h"
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#include <scsi/scsi_host.h>
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/* #define FCDEBUG */
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#define fc_printk printk ("%s: ", fc->name); printk
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#ifdef FCDEBUG
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#define FCD(x) fc_printk x;
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#define FCND(x) printk ("FC: "); printk x;
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#else
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#define FCD(x)
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#define FCND(x)
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#endif
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#ifdef __sparc__
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#define dma_alloc_consistent(d,s,p) sbus_alloc_consistent(d,s,p)
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#define dma_free_consistent(d,s,v,h) sbus_free_consistent(d,s,v,h)
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#define dma_map_single(d,v,s,dir) sbus_map_single(d,v,s,dir)
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#define dma_unmap_single(d,h,s,dir) sbus_unmap_single(d,h,s,dir)
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#define dma_map_sg(d,s,n,dir) sbus_map_sg(d,s,n,dir)
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#define dma_unmap_sg(d,s,n,dir) sbus_unmap_sg(d,s,n,dir)
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#else
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#define dma_alloc_consistent(d,s,p) pci_alloc_consistent(d,s,p)
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#define dma_free_consistent(d,s,v,h) pci_free_consistent(d,s,v,h)
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#define dma_map_single(d,v,s,dir) pci_map_single(d,v,s,dir)
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#define dma_unmap_single(d,h,s,dir) pci_unmap_single(d,h,s,dir)
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#define dma_map_sg(d,s,n,dir) pci_map_sg(d,s,n,dir)
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#define dma_unmap_sg(d,s,n,dir) pci_unmap_sg(d,s,n,dir)
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#endif
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#define FCP_CMND(SCpnt) ((fcp_cmnd *)&(SCpnt->SCp))
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#define FC_SCMND(SCpnt) ((fc_channel *)(SCpnt->device->host->hostdata[0]))
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#define SC_FCMND(fcmnd) ((Scsi_Cmnd *)((long)fcmnd - (long)&(((Scsi_Cmnd *)0)->SCp)))
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static int fcp_scsi_queue_it(fc_channel *, Scsi_Cmnd *, fcp_cmnd *, int);
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void fcp_queue_empty(fc_channel *);
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static void fcp_scsi_insert_queue (fc_channel *fc, fcp_cmnd *fcmd)
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{
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if (!fc->scsi_que) {
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fc->scsi_que = fcmd;
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fcmd->next = fcmd;
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fcmd->prev = fcmd;
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} else {
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fc->scsi_que->prev->next = fcmd;
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fcmd->prev = fc->scsi_que->prev;
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fc->scsi_que->prev = fcmd;
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fcmd->next = fc->scsi_que;
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}
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}
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static void fcp_scsi_remove_queue (fc_channel *fc, fcp_cmnd *fcmd)
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{
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if (fcmd == fcmd->next) {
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fc->scsi_que = NULL;
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return;
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}
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if (fcmd == fc->scsi_que)
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fc->scsi_que = fcmd->next;
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fcmd->prev->next = fcmd->next;
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fcmd->next->prev = fcmd->prev;
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}
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fc_channel *fc_channels = NULL;
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#define LSMAGIC 620829043
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typedef struct {
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/* Must be first */
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struct semaphore sem;
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int magic;
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int count;
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logi *logi;
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fcp_cmnd *fcmds;
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atomic_t todo;
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struct timer_list timer;
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unsigned char grace[0];
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} ls;
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#define LSOMAGIC 654907799
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typedef struct {
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/* Must be first */
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struct semaphore sem;
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int magic;
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int count;
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fcp_cmnd *fcmds;
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atomic_t todo;
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struct timer_list timer;
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} lso;
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#define LSEMAGIC 84482456
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typedef struct {
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/* Must be first */
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struct semaphore sem;
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int magic;
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int status;
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struct timer_list timer;
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} lse;
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static void fcp_login_timeout(unsigned long data)
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{
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ls *l = (ls *)data;
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FCND(("Login timeout\n"))
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up(&l->sem);
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}
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static void fcp_login_done(fc_channel *fc, int i, int status)
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{
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fcp_cmnd *fcmd;
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logi *plogi;
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fc_hdr *fch;
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ls *l = (ls *)fc->ls;
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FCD(("Login done %d %d\n", i, status))
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if (i < l->count) {
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if (fc->state == FC_STATE_FPORT_OK) {
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FCD(("Additional FPORT_OK received with status %d\n", status))
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return;
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}
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switch (status) {
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case FC_STATUS_OK: /* Oh, we found a fabric */
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case FC_STATUS_P_RJT: /* Oh, we haven't found any */
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fc->state = FC_STATE_FPORT_OK;
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fcmd = l->fcmds + i;
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plogi = l->logi + 3 * i;
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dma_unmap_single (fc->dev, fcmd->cmd, 3 * sizeof(logi),
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DMA_BIDIRECTIONAL);
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plogi->code = LS_PLOGI;
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memcpy (&plogi->nport_wwn, &fc->wwn_nport, sizeof(fc_wwn));
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memcpy (&plogi->node_wwn, &fc->wwn_node, sizeof(fc_wwn));
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memcpy (&plogi->common, fc->common_svc, sizeof(common_svc_parm));
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memcpy (&plogi->class1, fc->class_svcs, 3*sizeof(svc_parm));
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fch = &fcmd->fch;
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fcmd->token += l->count;
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FILL_FCHDR_RCTL_DID(fch, R_CTL_ELS_REQ, fc->did);
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FILL_FCHDR_SID(fch, fc->sid);
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#ifdef FCDEBUG
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{
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int i;
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unsigned *x = (unsigned *)plogi;
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printk ("logi: ");
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for (i = 0; i < 21; i++)
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printk ("%08x ", x[i]);
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printk ("\n");
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}
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#endif
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fcmd->cmd = dma_map_single (fc->dev, plogi, 3 * sizeof(logi),
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DMA_BIDIRECTIONAL);
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fcmd->rsp = fcmd->cmd + 2 * sizeof(logi);
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if (fc->hw_enque (fc, fcmd))
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printk ("FC: Cannot enque PLOGI packet on %s\n", fc->name);
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break;
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case FC_STATUS_ERR_OFFLINE:
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fc->state = FC_STATE_MAYBEOFFLINE;
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FCD (("FC is offline %d\n", l->grace[i]))
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break;
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default:
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printk ("FLOGI failed for %s with status %d\n", fc->name, status);
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/* Do some sort of error recovery here */
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break;
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}
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} else {
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i -= l->count;
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if (fc->state != FC_STATE_FPORT_OK) {
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FCD(("Unexpected N-PORT rsp received"))
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return;
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}
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switch (status) {
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case FC_STATUS_OK:
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plogi = l->logi + 3 * i;
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dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi),
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DMA_BIDIRECTIONAL);
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if (!fc->wwn_dest.lo && !fc->wwn_dest.hi) {
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memcpy (&fc->wwn_dest, &plogi[1].node_wwn, sizeof(fc_wwn));
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FCD(("Dest WWN %08x%08x\n", *(u32 *)&fc->wwn_dest, fc->wwn_dest.lo))
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} else if (fc->wwn_dest.lo != plogi[1].node_wwn.lo ||
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fc->wwn_dest.hi != plogi[1].node_wwn.hi) {
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printk ("%s: mismatch in wwns. Got %08x%08x, expected %08x%08x\n",
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fc->name,
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*(u32 *)&plogi[1].node_wwn, plogi[1].node_wwn.lo,
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*(u32 *)&fc->wwn_dest, fc->wwn_dest.lo);
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}
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fc->state = FC_STATE_ONLINE;
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printk ("%s: ONLINE\n", fc->name);
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if (atomic_dec_and_test (&l->todo))
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up(&l->sem);
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break;
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case FC_STATUS_ERR_OFFLINE:
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fc->state = FC_STATE_OFFLINE;
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dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi),
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DMA_BIDIRECTIONAL);
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printk ("%s: FC is offline\n", fc->name);
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if (atomic_dec_and_test (&l->todo))
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up(&l->sem);
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break;
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default:
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printk ("PLOGI failed for %s with status %d\n", fc->name, status);
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/* Do some sort of error recovery here */
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break;
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}
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}
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}
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static void fcp_report_map_done(fc_channel *fc, int i, int status)
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{
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fcp_cmnd *fcmd;
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fc_hdr *fch;
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unsigned char j;
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ls *l = (ls *)fc->ls;
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fc_al_posmap *p;
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FCD(("Report map done %d %d\n", i, status))
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switch (status) {
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case FC_STATUS_OK: /* Ok, let's have a fun on a loop */
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dma_unmap_single (fc->dev, l->fcmds[i].cmd, 3 * sizeof(logi),
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DMA_BIDIRECTIONAL);
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p = (fc_al_posmap *)(l->logi + 3 * i);
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#ifdef FCDEBUG
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{
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u32 *u = (u32 *)p;
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FCD(("%08x\n", u[0]))
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u ++;
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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]))
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}
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#endif
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if ((p->magic & 0xffff0000) != FC_AL_LILP || !p->len) {
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printk ("FC: Bad magic from REPORT_AL_MAP on %s - %08x\n", fc->name, p->magic);
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fc->state = FC_STATE_OFFLINE;
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} else {
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fc->posmap = (fcp_posmap *)kzalloc(sizeof(fcp_posmap)+p->len, GFP_KERNEL);
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if (!fc->posmap) {
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printk("FC: Not enough memory, offlining channel\n");
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fc->state = FC_STATE_OFFLINE;
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} else {
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int k;
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/* FIXME: This is where SOCAL transfers our AL-PA.
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Keep it here till we found out what other cards do... */
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fc->sid = (p->magic & 0xff);
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for (i = 0; i < p->len; i++)
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if (p->alpa[i] == fc->sid)
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break;
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k = p->len;
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if (i == p->len)
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i = 0;
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else {
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p->len--;
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i++;
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}
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fc->posmap->len = p->len;
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for (j = 0; j < p->len; j++) {
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if (i == k) i = 0;
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fc->posmap->list[j] = p->alpa[i++];
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}
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fc->state = FC_STATE_ONLINE;
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}
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}
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printk ("%s: ONLINE\n", fc->name);
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if (atomic_dec_and_test (&l->todo))
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up(&l->sem);
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break;
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case FC_STATUS_POINTTOPOINT: /* We're Point-to-Point, no AL... */
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FCD(("SID %d DID %d\n", fc->sid, fc->did))
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fcmd = l->fcmds + i;
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dma_unmap_single(fc->dev, fcmd->cmd, 3 * sizeof(logi),
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DMA_BIDIRECTIONAL);
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fch = &fcmd->fch;
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memset(l->logi + 3 * i, 0, 3 * sizeof(logi));
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FILL_FCHDR_RCTL_DID(fch, R_CTL_ELS_REQ, FS_FABRIC_F_PORT);
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FILL_FCHDR_SID(fch, 0);
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FILL_FCHDR_TYPE_FCTL(fch, TYPE_EXTENDED_LS, F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE);
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FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0);
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FILL_FCHDR_OXRX(fch, 0xffff, 0xffff);
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fch->param = 0;
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l->logi [3 * i].code = LS_FLOGI;
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fcmd->cmd = dma_map_single (fc->dev, l->logi + 3 * i, 3 * sizeof(logi),
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DMA_BIDIRECTIONAL);
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fcmd->rsp = fcmd->cmd + sizeof(logi);
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fcmd->cmdlen = sizeof(logi);
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fcmd->rsplen = sizeof(logi);
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fcmd->data = (dma_addr_t)NULL;
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fcmd->class = FC_CLASS_SIMPLE;
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fcmd->proto = TYPE_EXTENDED_LS;
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if (fc->hw_enque (fc, fcmd))
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printk ("FC: Cannot enque FLOGI packet on %s\n", fc->name);
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break;
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case FC_STATUS_ERR_OFFLINE:
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fc->state = FC_STATE_MAYBEOFFLINE;
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FCD (("FC is offline %d\n", l->grace[i]))
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break;
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default:
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printk ("FLOGI failed for %s with status %d\n", fc->name, status);
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/* Do some sort of error recovery here */
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break;
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}
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}
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void fcp_register(fc_channel *fc, u8 type, int unregister)
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{
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int size, i;
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int slots = (fc->can_queue * 3) >> 1;
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FCND(("Going to %sregister\n", unregister ? "un" : ""))
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if (type == TYPE_SCSI_FCP) {
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if (!unregister) {
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fc->scsi_cmd_pool = (fcp_cmd *)
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dma_alloc_consistent (fc->dev,
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slots * (sizeof (fcp_cmd) + fc->rsp_size),
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&fc->dma_scsi_cmd);
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fc->scsi_rsp_pool = (char *)(fc->scsi_cmd_pool + slots);
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fc->dma_scsi_rsp = fc->dma_scsi_cmd + slots * sizeof (fcp_cmd);
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fc->scsi_bitmap_end = (slots + 63) & ~63;
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size = fc->scsi_bitmap_end / 8;
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fc->scsi_bitmap = kzalloc (size, GFP_KERNEL);
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set_bit (0, fc->scsi_bitmap);
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for (i = fc->can_queue; i < fc->scsi_bitmap_end; i++)
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set_bit (i, fc->scsi_bitmap);
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fc->scsi_free = fc->can_queue;
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fc->cmd_slots = (fcp_cmnd **)kzalloc(slots * sizeof(fcp_cmnd*), GFP_KERNEL);
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fc->abort_count = 0;
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} else {
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fc->scsi_name[0] = 0;
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kfree (fc->scsi_bitmap);
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kfree (fc->cmd_slots);
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FCND(("Unregistering\n"));
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#if 0
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if (fc->rst_pkt) {
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if (fc->rst_pkt->eh_state == SCSI_STATE_UNUSED)
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kfree(fc->rst_pkt);
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else {
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/* Can't happen. Some memory would be lost. */
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printk("FC: Reset in progress. Now?!");
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}
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}
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#endif
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FCND(("Unregistered\n"));
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}
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} else
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printk ("FC: %segistering unknown type %02x\n", unregister ? "Unr" : "R", type);
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}
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|
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static void fcp_scsi_done(Scsi_Cmnd *SCpnt);
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static inline void fcp_scsi_receive(fc_channel *fc, int token, int status, fc_hdr *fch)
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{
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fcp_cmnd *fcmd;
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fcp_rsp *rsp;
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int host_status;
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Scsi_Cmnd *SCpnt;
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int sense_len;
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int rsp_status;
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fcmd = fc->cmd_slots[token];
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if (!fcmd) return;
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rsp = (fcp_rsp *) (fc->scsi_rsp_pool + fc->rsp_size * token);
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SCpnt = SC_FCMND(fcmd);
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if (SCpnt->done != fcp_scsi_done)
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return;
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rsp_status = rsp->fcp_status;
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FCD(("rsp_status %08x status %08x\n", rsp_status, status))
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switch (status) {
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case FC_STATUS_OK:
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host_status=DID_OK;
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if (rsp_status & FCP_STATUS_RESID) {
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#ifdef FCDEBUG
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FCD(("Resid %d\n", rsp->fcp_resid))
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{
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fcp_cmd *cmd = fc->scsi_cmd_pool + token;
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int i;
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printk ("Command ");
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for (i = 0; i < sizeof(fcp_cmd); i+=4)
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printk ("%08x ", *(u32 *)(((char *)cmd)+i));
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printk ("\nResponse ");
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for (i = 0; i < fc->rsp_size; i+=4)
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printk ("%08x ", *(u32 *)(((char *)rsp)+i));
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printk ("\n");
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}
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#endif
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}
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|
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if (rsp_status & FCP_STATUS_SENSE_LEN) {
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sense_len = rsp->fcp_sense_len;
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if (sense_len > sizeof(SCpnt->sense_buffer)) sense_len = sizeof(SCpnt->sense_buffer);
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memcpy(SCpnt->sense_buffer, ((char *)(rsp+1)), sense_len);
|
|
}
|
|
|
|
if (fcmd->data) {
|
|
if (SCpnt->use_sg)
|
|
dma_unmap_sg(fc->dev, (struct scatterlist *)SCpnt->request_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 = kzalloc(sizeof (ls) + count, GFP_KERNEL);
|
|
if (!l) {
|
|
printk ("FC: Cannot allocate memory for initialization\n");
|
|
return -ENOMEM;
|
|
}
|
|
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 = kzalloc (count * 3 * sizeof(logi), GFP_KERNEL);
|
|
l->fcmds = kzalloc (count * sizeof(fcp_cmnd), GFP_KERNEL);
|
|
if (!l->logi || !l->fcmds) {
|
|
kfree (l->logi);
|
|
kfree (l->fcmds);
|
|
kfree (l);
|
|
printk ("FC: Cannot allocate DMA memory for initialization\n");
|
|
return -ENOMEM;
|
|
}
|
|
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 = kzalloc (count * sizeof(fcp_cmnd), GFP_KERNEL);
|
|
if (!l.fcmds) {
|
|
printk ("FC: Cannot allocate memory for forcing offline\n");
|
|
return -ENOMEM;
|
|
}
|
|
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)
|
|
{
|
|
if (FCP_CMND(SCpnt)->done)
|
|
FCP_CMND(SCpnt)->done(SCpnt);
|
|
}
|
|
|
|
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->request_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)) {
|
|
SCpnt->result = DID_ABORT;
|
|
fcmd->done(SCpnt);
|
|
printk("FC: soft abort\n");
|
|
return SUCCESS;
|
|
} else {
|
|
printk("FC: hard abort refused\n");
|
|
return FAILED;
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
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);
|
|
}
|
|
#endif
|
|
|
|
#define FCP_RESET_TIMEOUT (2*HZ)
|
|
|
|
int fcp_scsi_dev_reset(Scsi_Cmnd *SCpnt)
|
|
{
|
|
#if 0 /* broken junk, but if davem wants to compile this driver, let him.. */
|
|
unsigned long flags;
|
|
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;
|
|
|
|
spin_lock_irqsave(SCpnt->device->host->host_lock, flags);
|
|
fcp_scsi_queue_it(fc, fc->rst_pkt, fcmd, 0);
|
|
spin_unlock_irqrestore(SCpnt->device->host->host_lock, flags);
|
|
|
|
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;
|
|
#endif
|
|
return SUCCESS;
|
|
}
|
|
|
|
static 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;
|
|
}
|
|
|
|
int fcp_scsi_host_reset(Scsi_Cmnd *SCpnt)
|
|
{
|
|
unsigned long flags;
|
|
int rc;
|
|
|
|
spin_lock_irqsave(SCpnt->device->host->host_lock, flags);
|
|
rc = __fcp_scsi_host_reset(SCpnt);
|
|
spin_unlock_irqrestore(SCpnt->device->host->host_lock, flags);
|
|
|
|
return rc;
|
|
}
|
|
|
|
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(fcp_cmnd));
|
|
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 *)kzalloc(2 * sizeof(logi), GFP_KERNEL);
|
|
if (!l) return -ENOMEM;
|
|
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 *)kzalloc(2 * sizeof(prli), GFP_KERNEL);
|
|
if (!p) return -ENOMEM;
|
|
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");
|
|
|
|
|