1 /* Copyright(c) 2000, Compaq Computer Corporation
2 * Fibre Channel Host Bus Adapter
4 * Originally developed and tested on:
5 * (front): [chip] Tachyon TS HPFC-5166A/1.2 L2C1090 ...
6 * SP# P225CXCBFIEL6T, Rev XC
7 * SP# 161290-001, Rev XD
8 * (back): Board No. 010008-001 A/W Rev X5, FAB REV X5
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2, or (at your option) any
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 * Written by Don Zimmerman
20 * IOCTL and procfs added by Jouke Numan
21 * SMP testing by Chel Van Gennip
23 * portions copied from:
24 * QLogic CPQFCTS SCSI-FCP
25 * Written by Erik H. Moe, ehm@cris.com
26 * Copyright 1995, Erik H. Moe
27 * Renamed and updated to 1.3.x by Michael Griffith <grif@cs.ucr.edu>
28 * Chris Loveland <cwl@iol.unh.edu> to support the isp2100 and isp2200
32 #define LinuxVersionCode(v, p, s) (((v)<<16)+((p)<<8)+(s))
34 #include <linux/config.h>
35 #include <linux/interrupt.h>
36 #include <linux/module.h>
37 #include <linux/version.h>
38 #include <linux/blkdev.h>
39 #include <linux/kernel.h>
40 #include <linux/string.h>
41 #include <linux/types.h>
42 #include <linux/pci.h>
43 #include <linux/delay.h>
44 #include <linux/timer.h>
45 #include <linux/init.h>
46 #include <linux/ioport.h> // request_region() prototype
47 #include <linux/completion.h>
50 #include <asm/uaccess.h> // ioctl related
52 #include <linux/spinlock.h>
54 #include <scsi/scsi_host.h>
55 #include <scsi/scsi_ioctl.h>
56 #include "cpqfcTSchip.h"
57 #include "cpqfcTSstructs.h"
58 #include "cpqfcTStrigger.h"
62 /* Embedded module documentation macros - see module.h */
63 MODULE_AUTHOR("Compaq Computer Corporation");
64 MODULE_DESCRIPTION("Driver for Compaq 64-bit/66Mhz PCI Fibre Channel HBA v. 2.5.4");
65 MODULE_LICENSE("GPL");
67 int cpqfcTS_TargetDeviceReset( Scsi_Device *ScsiDev, unsigned int reset_flags);
69 // This struct was originally defined in
70 // /usr/src/linux/include/linux/proc_fs.h
71 // since it's only partially implemented, we only use first
73 // NOTE: proc_fs changes in 2.4 kernel
75 #if LINUX_VERSION_CODE < LinuxVersionCode(2,3,27)
76 static struct proc_dir_entry proc_scsi_cpqfcTS =
78 PROC_SCSI_CPQFCTS, // ushort low_ino (enumerated list)
80 DEV_NAME, // const char* name
81 S_IFDIR | S_IRUGO | S_IXUGO, // mode_t mode
89 #if LINUX_VERSION_CODE >= LinuxVersionCode(2,4,7)
90 # define CPQFC_DECLARE_COMPLETION(x) DECLARE_COMPLETION(x)
91 # define CPQFC_WAITING waiting
92 # define CPQFC_COMPLETE(x) complete(x)
93 # define CPQFC_WAIT_FOR_COMPLETION(x) wait_for_completion(x);
95 # define CPQFC_DECLARE_COMPLETION(x) DECLARE_MUTEX_LOCKED(x)
96 # define CPQFC_WAITING sem
97 # define CPQFC_COMPLETE(x) up(x)
98 # define CPQFC_WAIT_FOR_COMPLETION(x) down(x)
101 static int cpqfc_alloc_private_data_pool(CPQFCHBA *hba);
103 /* local function to load our per-HBA (local) data for chip
104 registers, FC link state, all FC exchanges, etc.
106 We allocate space and compute address offsets for the
107 most frequently accessed addresses; others (like World Wide
108 Name) are not necessary.
110 static void Cpqfc_initHBAdata(CPQFCHBA *cpqfcHBAdata, struct pci_dev *PciDev )
113 cpqfcHBAdata->PciDev = PciDev; // copy PCI info ptr
115 // since x86 port space is 64k, we only need the lower 16 bits
116 cpqfcHBAdata->fcChip.Registers.IOBaseL =
117 PciDev->resource[1].start & PCI_BASE_ADDRESS_IO_MASK;
119 cpqfcHBAdata->fcChip.Registers.IOBaseU =
120 PciDev->resource[2].start & PCI_BASE_ADDRESS_IO_MASK;
122 // 32-bit memory addresses
123 cpqfcHBAdata->fcChip.Registers.MemBase =
124 PciDev->resource[3].start & PCI_BASE_ADDRESS_MEM_MASK;
126 cpqfcHBAdata->fcChip.Registers.ReMapMemBase =
127 ioremap( PciDev->resource[3].start & PCI_BASE_ADDRESS_MEM_MASK,
130 cpqfcHBAdata->fcChip.Registers.RAMBase =
131 PciDev->resource[4].start;
133 cpqfcHBAdata->fcChip.Registers.SROMBase = // NULL for HP TS adapter
134 PciDev->resource[5].start;
136 // now the Tachlite chip registers
137 // the REGISTER struct holds both the physical address & last
138 // written value (some TL registers are WRITE ONLY)
140 cpqfcHBAdata->fcChip.Registers.SFQconsumerIndex.address =
141 cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_SFQ_CONSUMER_INDEX;
143 cpqfcHBAdata->fcChip.Registers.ERQproducerIndex.address =
144 cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_ERQ_PRODUCER_INDEX;
147 cpqfcHBAdata->fcChip.Registers.FMconfig.address =
148 cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_CONFIG;
149 cpqfcHBAdata->fcChip.Registers.FMcontrol.address =
150 cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_CONTROL;
151 cpqfcHBAdata->fcChip.Registers.FMstatus.address =
152 cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_STATUS;
153 cpqfcHBAdata->fcChip.Registers.FMLinkStatus1.address =
154 cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_LINK_STAT1;
155 cpqfcHBAdata->fcChip.Registers.FMLinkStatus2.address =
156 cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_LINK_STAT2;
157 cpqfcHBAdata->fcChip.Registers.FMBB_CreditZero.address =
158 cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_BB_CREDIT0;
161 cpqfcHBAdata->fcChip.Registers.TYconfig.address =
162 cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_TACH_CONFIG;
163 cpqfcHBAdata->fcChip.Registers.TYcontrol.address =
164 cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_TACH_CONTROL;
165 cpqfcHBAdata->fcChip.Registers.TYstatus.address =
166 cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_TACH_STATUS;
167 cpqfcHBAdata->fcChip.Registers.rcv_al_pa.address =
168 cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_RCV_AL_PA;
169 cpqfcHBAdata->fcChip.Registers.ed_tov.address =
170 cpqfcHBAdata->fcChip.Registers.ReMapMemBase + TL_MEM_FM_ED_TOV;
173 cpqfcHBAdata->fcChip.Registers.INTEN.address =
174 cpqfcHBAdata->fcChip.Registers.ReMapMemBase + IINTEN;
175 cpqfcHBAdata->fcChip.Registers.INTPEND.address =
176 cpqfcHBAdata->fcChip.Registers.ReMapMemBase + IINTPEND;
177 cpqfcHBAdata->fcChip.Registers.INTSTAT.address =
178 cpqfcHBAdata->fcChip.Registers.ReMapMemBase + IINTSTAT;
180 DEBUG_PCI(printk(" cpqfcHBAdata->fcChip.Registers. :\n"));
181 DEBUG_PCI(printk(" IOBaseL = %x\n",
182 cpqfcHBAdata->fcChip.Registers.IOBaseL));
183 DEBUG_PCI(printk(" IOBaseU = %x\n",
184 cpqfcHBAdata->fcChip.Registers.IOBaseU));
186 /* printk(" ioremap'd Membase: %p\n", cpqfcHBAdata->fcChip.Registers.ReMapMemBase); */
188 DEBUG_PCI(printk(" SFQconsumerIndex.address = %p\n",
189 cpqfcHBAdata->fcChip.Registers.SFQconsumerIndex.address));
190 DEBUG_PCI(printk(" ERQproducerIndex.address = %p\n",
191 cpqfcHBAdata->fcChip.Registers.ERQproducerIndex.address));
192 DEBUG_PCI(printk(" TYconfig.address = %p\n",
193 cpqfcHBAdata->fcChip.Registers.TYconfig.address));
194 DEBUG_PCI(printk(" FMconfig.address = %p\n",
195 cpqfcHBAdata->fcChip.Registers.FMconfig.address));
196 DEBUG_PCI(printk(" FMcontrol.address = %p\n",
197 cpqfcHBAdata->fcChip.Registers.FMcontrol.address));
199 // set default options for FC controller (chip)
200 cpqfcHBAdata->fcChip.Options.initiator = 1; // default: SCSI initiator
201 cpqfcHBAdata->fcChip.Options.target = 0; // default: SCSI target
202 cpqfcHBAdata->fcChip.Options.extLoopback = 0;// default: no loopback @GBIC
203 cpqfcHBAdata->fcChip.Options.intLoopback = 0;// default: no loopback inside chip
205 // set highest and lowest FC-PH version the adapter/driver supports
206 // (NOT strict compliance)
207 cpqfcHBAdata->fcChip.highest_FCPH_ver = FC_PH3;
208 cpqfcHBAdata->fcChip.lowest_FCPH_ver = FC_PH43;
210 // set function points for this controller / adapter
211 cpqfcHBAdata->fcChip.ResetTachyon = CpqTsResetTachLite;
212 cpqfcHBAdata->fcChip.FreezeTachyon = CpqTsFreezeTachlite;
213 cpqfcHBAdata->fcChip.UnFreezeTachyon = CpqTsUnFreezeTachlite;
214 cpqfcHBAdata->fcChip.CreateTachyonQues = CpqTsCreateTachLiteQues;
215 cpqfcHBAdata->fcChip.DestroyTachyonQues = CpqTsDestroyTachLiteQues;
216 cpqfcHBAdata->fcChip.InitializeTachyon = CpqTsInitializeTachLite;
217 cpqfcHBAdata->fcChip.LaserControl = CpqTsLaserControl;
218 cpqfcHBAdata->fcChip.ProcessIMQEntry = CpqTsProcessIMQEntry;
219 cpqfcHBAdata->fcChip.InitializeFrameManager = CpqTsInitializeFrameManager;
220 cpqfcHBAdata->fcChip.ReadWriteWWN = CpqTsReadWriteWWN;
221 cpqfcHBAdata->fcChip.ReadWriteNVRAM = CpqTsReadWriteNVRAM;
223 if (cpqfc_alloc_private_data_pool(cpqfcHBAdata) != 0) {
225 "cpqfc: unable to allocate pool for passthru ioctls. "
226 "Passthru ioctls disabled.\n");
231 /* (borrowed from linux/drivers/scsi/hosts.c) */
232 static void launch_FCworker_thread(struct Scsi_Host *HostAdapter)
234 DECLARE_MUTEX_LOCKED(sem);
236 CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
238 ENTER("launch_FC_worker_thread");
240 cpqfcHBAdata->notify_wt = &sem;
242 /* must unlock before kernel_thread(), for it may cause a reschedule. */
243 spin_unlock_irq(HostAdapter->host_lock);
244 kernel_thread((int (*)(void *))cpqfcTSWorkerThread,
245 (void *) HostAdapter, 0);
247 * Now wait for the kernel error thread to initialize itself
251 spin_lock_irq(HostAdapter->host_lock);
252 cpqfcHBAdata->notify_wt = NULL;
254 LEAVE("launch_FC_worker_thread");
259 /* "Entry" point to discover if any supported PCI
260 bus adapter can be found
263 * Compaq 64-bit, 66MHz HBA with Tachyon TS
269 #ifndef PCI_DEVICE_ID_COMPAQ_
270 #define PCI_DEVICE_ID_COMPAQ_TACHYON 0xa0fc
273 static struct SupportedPCIcards cpqfc_boards[] __initdata = {
274 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TACHYON},
275 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_TACHLITE},
276 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_TACHYON},
280 int cpqfcTS_detect(Scsi_Host_Template *ScsiHostTemplate)
282 int NumberOfAdapters=0; // how many of our PCI adapters are found?
283 struct pci_dev *PciDev = NULL;
284 struct Scsi_Host *HostAdapter = NULL;
285 CPQFCHBA *cpqfcHBAdata = NULL;
286 struct timer_list *cpqfcTStimer = NULL;
289 ENTER("cpqfcTS_detect");
291 #if LINUX_VERSION_CODE < LinuxVersionCode(2,3,27)
292 ScsiHostTemplate->proc_dir = &proc_scsi_cpqfcTS;
294 ScsiHostTemplate->proc_name = "cpqfcTS";
297 for( i=0; i < HBA_TYPES; i++)
299 // look for all HBAs of each type
301 while((PciDev = pci_find_device(cpqfc_boards[i].vendor_id,
302 cpqfc_boards[i].device_id, PciDev)))
305 if (pci_enable_device(PciDev)) {
307 "cpqfc: can't enable PCI device at %s\n", pci_name(PciDev));
311 if (pci_set_dma_mask(PciDev, CPQFCTS_DMA_MASK) != 0) {
313 "cpqfc: HBA cannot support required DMA mask, skipping.\n");
314 goto err_disable_dev;
317 // NOTE: (kernel 2.2.12-32) limits allocation to 128k bytes...
318 /* printk(" scsi_register allocating %d bytes for FC HBA\n",
319 (ULONG)sizeof(CPQFCHBA)); */
321 HostAdapter = scsi_register( ScsiHostTemplate, sizeof( CPQFCHBA ) );
323 if(HostAdapter == NULL) {
325 "cpqfc: can't register SCSI HBA, skipping.\n");
326 goto err_disable_dev;
328 DEBUG_PCI( printk(" HBA found!\n"));
329 DEBUG_PCI( printk(" HostAdapter->PciDev->irq = %u\n", PciDev->irq) );
330 DEBUG_PCI(printk(" PciDev->baseaddress[0]= %lx\n",
331 PciDev->resource[0].start));
332 DEBUG_PCI(printk(" PciDev->baseaddress[1]= %lx\n",
333 PciDev->resource[1].start));
334 DEBUG_PCI(printk(" PciDev->baseaddress[2]= %lx\n",
335 PciDev->resource[2].start));
336 DEBUG_PCI(printk(" PciDev->baseaddress[3]= %lx\n",
337 PciDev->resource[3].start));
339 HostAdapter->irq = PciDev->irq; // copy for Scsi layers
341 // HP Tachlite uses two (255-byte) ranges of Port I/O (lower & upper),
342 // for a total I/O port address space of 512 bytes.
343 // mask out the I/O port address (lower) & record
344 HostAdapter->io_port = (unsigned int)
345 PciDev->resource[1].start & PCI_BASE_ADDRESS_IO_MASK;
346 HostAdapter->n_io_port = 0xff;
348 // i.e., expect 128 targets (arbitrary number), while the
349 // RA-4000 supports 32 LUNs
350 HostAdapter->max_id = 0; // incremented as devices log in
351 HostAdapter->max_lun = CPQFCTS_MAX_LUN; // LUNs per FC device
352 HostAdapter->max_channel = CPQFCTS_MAX_CHANNEL; // multiple busses?
354 // get the pointer to our HBA specific data... (one for
355 // each HBA on the PCI bus(ses)).
356 cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
358 // make certain our data struct is clear
359 memset( cpqfcHBAdata, 0, sizeof( CPQFCHBA ) );
362 // initialize our HBA info
363 cpqfcHBAdata->HBAnum = NumberOfAdapters;
365 cpqfcHBAdata->HostAdapter = HostAdapter; // back ptr
366 Cpqfc_initHBAdata( cpqfcHBAdata, PciDev ); // fill MOST fields
368 cpqfcHBAdata->HBAnum = NumberOfAdapters;
369 spin_lock_init(&cpqfcHBAdata->hba_spinlock);
371 // request necessary resources and check for conflicts
372 if( request_irq( HostAdapter->irq,
373 cpqfcTS_intr_handler,
374 SA_INTERRUPT | SA_SHIRQ,
378 printk(KERN_WARNING "cpqfc: IRQ %u already used\n", HostAdapter->irq);
382 // Since we have two 256-byte I/O port ranges (upper
383 // and lower), check them both
384 if( !request_region( cpqfcHBAdata->fcChip.Registers.IOBaseU,
387 printk(KERN_WARNING "cpqfc: address in use: %x\n",
388 cpqfcHBAdata->fcChip.Registers.IOBaseU);
392 if( !request_region( cpqfcHBAdata->fcChip.Registers.IOBaseL,
395 printk(KERN_WARNING "cpqfc: address in use: %x\n",
396 cpqfcHBAdata->fcChip.Registers.IOBaseL);
397 goto err_release_region_U;
400 // OK, we have grabbed everything we need now.
401 DEBUG_PCI(printk(" Reserved 255 I/O addresses @ %x\n",
402 cpqfcHBAdata->fcChip.Registers.IOBaseL ));
403 DEBUG_PCI(printk(" Reserved 255 I/O addresses @ %x\n",
404 cpqfcHBAdata->fcChip.Registers.IOBaseU ));
408 // start our kernel worker thread
410 spin_lock_irq(HostAdapter->host_lock);
411 launch_FCworker_thread(HostAdapter);
414 // start our TimerTask...
416 cpqfcTStimer = &cpqfcHBAdata->cpqfcTStimer;
418 init_timer( cpqfcTStimer); // Linux clears next/prev values
419 cpqfcTStimer->expires = jiffies + HZ; // one second
420 cpqfcTStimer->data = (unsigned long)cpqfcHBAdata; // this adapter
421 cpqfcTStimer->function = cpqfcTSheartbeat; // handles timeouts, housekeeping
423 add_timer( cpqfcTStimer); // give it to Linux
426 // now initialize our hardware...
427 if (cpqfcHBAdata->fcChip.InitializeTachyon( cpqfcHBAdata, 1,1)) {
428 printk(KERN_WARNING "cpqfc: initialization of HBA hardware failed.\n");
429 goto err_release_region_L;
432 cpqfcHBAdata->fcStatsTime = jiffies; // (for FC Statistics delta)
434 // give our HBA time to initialize and login current devices...
436 // The Brocade switch (e.g. 2400, 2010, etc.) as of March 2000,
437 // has the following algorithm for FL_Port startup:
439 // 0: Device Plugin and LIP(F7,F7) transmission
441 // 1.027 LISA incoming, no CLS! (link not up)
442 // 1.028 NOS incoming (switch test for N_Port)
443 // 1.577 ED_TOV expired, transmit LIPs again
444 // 3.0 LIP(F8,F7) incoming (switch passes Tach Prim.Sig)
445 // 3.028 LILP received, link up, FLOGI starts
446 // slowest(worst) case, measured on 1Gb Finisar GT analyzer
448 unsigned long stop_time;
450 spin_unlock_irq(HostAdapter->host_lock);
451 stop_time = jiffies + 4*HZ;
452 while ( time_before(jiffies, stop_time) )
453 schedule(); // (our worker task needs to run)
457 spin_lock_irq(HostAdapter->host_lock);
459 spin_unlock_irq(HostAdapter->host_lock);
463 err_release_region_L:
464 release_region( cpqfcHBAdata->fcChip.Registers.IOBaseL, 0xff );
465 err_release_region_U:
466 release_region( cpqfcHBAdata->fcChip.Registers.IOBaseU, 0xff );
468 free_irq( HostAdapter->irq, HostAdapter);
470 scsi_unregister( HostAdapter);
472 pci_disable_device( PciDev );
478 LEAVE("cpqfcTS_detect");
480 return NumberOfAdapters;
484 static void my_ioctl_done (Scsi_Cmnd * SCpnt)
486 struct request * req;
488 req = SCpnt->request;
489 req->rq_status = RQ_SCSI_DONE; /* Busy, but indicate request done */
491 if (req->CPQFC_WAITING != NULL)
492 CPQFC_COMPLETE(req->CPQFC_WAITING);
496 static int cpqfc_alloc_private_data_pool(CPQFCHBA *hba)
498 hba->private_data_bits = NULL;
499 hba->private_data_pool = NULL;
500 hba->private_data_bits =
501 kmalloc(((CPQFC_MAX_PASSTHRU_CMDS+BITS_PER_LONG-1) /
502 BITS_PER_LONG)*sizeof(unsigned long),
504 if (hba->private_data_bits == NULL)
506 memset(hba->private_data_bits, 0,
507 ((CPQFC_MAX_PASSTHRU_CMDS+BITS_PER_LONG-1) /
508 BITS_PER_LONG)*sizeof(unsigned long));
509 hba->private_data_pool = kmalloc(sizeof(cpqfc_passthru_private_t) *
510 CPQFC_MAX_PASSTHRU_CMDS, GFP_KERNEL);
511 if (hba->private_data_pool == NULL) {
512 kfree(hba->private_data_bits);
513 hba->private_data_bits = NULL;
519 static void cpqfc_free_private_data_pool(CPQFCHBA *hba)
521 kfree(hba->private_data_bits);
522 kfree(hba->private_data_pool);
525 int is_private_data_of_cpqfc(CPQFCHBA *hba, void *pointer)
527 /* Is pointer within our private data pool?
528 We use Scsi_Request->upper_private_data (normally
529 reserved for upper layer drivers, e.g. the sg driver)
530 We check to see if the pointer is ours by looking at
531 its address. Is this ok? Hmm, it occurs to me that
532 a user app might do something bad by using sg to send
533 a cpqfc passthrough ioctl with upper_data_private
534 forged to be somewhere in our pool..., though they'd
535 normally have to be root already to do this. */
537 return (pointer != NULL &&
538 pointer >= (void *) hba->private_data_pool &&
539 pointer < (void *) hba->private_data_pool +
540 sizeof(*hba->private_data_pool) *
541 CPQFC_MAX_PASSTHRU_CMDS);
544 cpqfc_passthru_private_t *cpqfc_alloc_private_data(CPQFCHBA *hba)
549 i = find_first_zero_bit(hba->private_data_bits,
550 CPQFC_MAX_PASSTHRU_CMDS);
551 if (i == CPQFC_MAX_PASSTHRU_CMDS)
553 } while ( test_and_set_bit(i & (BITS_PER_LONG - 1),
554 hba->private_data_bits+(i/BITS_PER_LONG)) != 0);
555 return &hba->private_data_pool[i];
558 void cpqfc_free_private_data(CPQFCHBA *hba, cpqfc_passthru_private_t *data)
561 i = data - hba->private_data_pool;
562 clear_bit(i&(BITS_PER_LONG-1),
563 hba->private_data_bits+(i/BITS_PER_LONG));
566 int cpqfcTS_ioctl( struct scsi_device *ScsiDev, int Cmnd, void *arg)
569 struct Scsi_Host *HostAdapter = ScsiDev->host;
570 CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
571 PTACHYON fcChip = &cpqfcHBAdata->fcChip;
572 PFC_LOGGEDIN_PORT pLoggedInPort = NULL;
573 struct scsi_cmnd *DumCmnd;
575 VENDOR_IOCTL_REQ ioc;
576 cpqfc_passthru_t *vendor_cmd;
578 Scsi_Request *ScsiPassThruReq;
579 cpqfc_passthru_private_t *privatedata;
581 ENTER("cpqfcTS_ioctl ");
583 // printk("ioctl CMND %d", Cmnd);
585 // Passthrough provides a mechanism to bypass the RAID
586 // or other controller and talk directly to the devices
587 // (e.g. physical disk drive)
588 // Passthrough commands, unfortunately, tend to be vendor
589 // specific; this is tailored to COMPAQ's RAID (RA4x00)
590 case CPQFCTS_SCSI_PASSTHRU:
592 void *buf = NULL; // for kernel space buffer for user data
594 /* Check that our pool got allocated ok. */
595 if (cpqfcHBAdata->private_data_pool == NULL)
601 // must be super user to send stuff directly to the
602 // controller and/or physical drives...
603 if( !capable(CAP_SYS_RAWIO) )
606 // copy the caller's struct to our space.
607 if( copy_from_user( &ioc, arg, sizeof( VENDOR_IOCTL_REQ)))
610 vendor_cmd = ioc.argp; // i.e., CPQ specific command struct
612 // If necessary, grab a kernel/DMA buffer
615 buf = kmalloc( vendor_cmd->len, GFP_KERNEL);
619 // Now build a Scsi_Request to pass down...
620 ScsiPassThruReq = scsi_allocate_request(ScsiDev, GFP_KERNEL);
621 if (ScsiPassThruReq == NULL) {
625 ScsiPassThruReq->upper_private_data =
626 cpqfc_alloc_private_data(cpqfcHBAdata);
627 if (ScsiPassThruReq->upper_private_data == NULL) {
629 scsi_release_request(ScsiPassThruReq); // "de-allocate"
633 if (vendor_cmd->rw_flag == VENDOR_WRITE_OPCODE) {
634 if (vendor_cmd->len) { // Need data from user?
635 if (copy_from_user(buf, vendor_cmd->bufp,
638 cpqfc_free_private_data(cpqfcHBAdata,
639 ScsiPassThruReq->upper_private_data);
640 scsi_release_request(ScsiPassThruReq);
644 ScsiPassThruReq->sr_data_direction = DMA_TO_DEVICE;
645 } else if (vendor_cmd->rw_flag == VENDOR_READ_OPCODE) {
646 ScsiPassThruReq->sr_data_direction = DMA_FROM_DEVICE;
648 // maybe this means a bug in the user app
649 ScsiPassThruReq->sr_data_direction = DMA_BIDIRECTIONAL;
651 ScsiPassThruReq->sr_cmd_len = 0; // set correctly by scsi_do_req()
652 ScsiPassThruReq->sr_sense_buffer[0] = 0;
653 ScsiPassThruReq->sr_sense_buffer[2] = 0;
655 // We copy the scheme used by sd.c:spinup_disk() to submit commands
656 // to our own HBA. We do this in order to stall the
657 // thread calling the IOCTL until it completes, and use
658 // the same "_quecommand" function for synchronizing
659 // FC Link events with our "worker thread".
661 privatedata = ScsiPassThruReq->upper_private_data;
662 privatedata->bus = vendor_cmd->bus;
663 privatedata->pdrive = vendor_cmd->pdrive;
665 // eventually gets us to our own _quecommand routine
666 scsi_wait_req(ScsiPassThruReq,
667 &vendor_cmd->cdb[0], buf, vendor_cmd->len,
670 result = ScsiPassThruReq->sr_result;
672 // copy any sense data back to caller
675 memcpy( vendor_cmd->sense_data, // see struct def - size=40
676 ScsiPassThruReq->sr_sense_buffer,
677 sizeof(ScsiPassThruReq->sr_sense_buffer) <
678 sizeof(vendor_cmd->sense_data) ?
679 sizeof(ScsiPassThruReq->sr_sense_buffer) :
680 sizeof(vendor_cmd->sense_data)
683 SDpnt = ScsiPassThruReq->sr_device;
684 /* upper_private_data is already freed in call_scsi_done() */
685 scsi_release_request(ScsiPassThruReq); // "de-allocate"
686 ScsiPassThruReq = NULL;
688 // need to pass data back to user (space)?
689 if( (vendor_cmd->rw_flag == VENDOR_READ_OPCODE) &&
691 if( copy_to_user( vendor_cmd->bufp, buf, vendor_cmd->len))
699 case CPQFCTS_GETPCIINFO:
701 cpqfc_pci_info_struct pciinfo;
708 pciinfo.bus = cpqfcHBAdata->PciDev->bus->number;
709 pciinfo.dev_fn = cpqfcHBAdata->PciDev->devfn;
710 pciinfo.board_id = cpqfcHBAdata->PciDev->device |
711 (cpqfcHBAdata->PciDev->vendor <<16);
713 if(copy_to_user( arg, &pciinfo, sizeof(cpqfc_pci_info_struct)))
718 case CPQFCTS_GETDRIVVER:
720 DriverVer_type DriverVer =
721 CPQFCTS_DRIVER_VER( VER_MAJOR,VER_MINOR,VER_SUBMINOR);
726 if(copy_to_user( arg, &DriverVer, sizeof(DriverVer)))
733 case CPQFC_IOCTL_FC_TARGET_ADDRESS:
734 // can we find an FC device mapping to this SCSI target?
735 /* DumCmnd.channel = ScsiDev->channel; */ // For searching
736 /* DumCmnd.target = ScsiDev->id; */
737 /* DumCmnd.lun = ScsiDev->lun; */
739 DumCmnd = scsi_get_command (ScsiDev, GFP_KERNEL);
743 pLoggedInPort = fcFindLoggedInPort( fcChip,
744 DumCmnd, // search Scsi Nexus
745 0, // DON'T search linked list for FC port id
746 NULL, // DON'T search linked list for FC WWN
747 NULL); // DON'T care about end of list
748 scsi_put_command (DumCmnd);
749 if (pLoggedInPort == NULL) {
753 result = access_ok(VERIFY_WRITE, arg, sizeof(Scsi_FCTargAddress)) ? 0 : -EFAULT;
756 put_user(pLoggedInPort->port_id,
757 &((Scsi_FCTargAddress *) arg)->host_port_id);
759 for( i=3,j=0; i>=0; i--) // copy the LOGIN port's WWN
760 put_user(pLoggedInPort->u.ucWWN[i],
761 &((Scsi_FCTargAddress *) arg)->host_wwn[j++]);
762 for( i=7; i>3; i--) // copy the LOGIN port's WWN
763 put_user(pLoggedInPort->u.ucWWN[i],
764 &((Scsi_FCTargAddress *) arg)->host_wwn[j++]);
768 case CPQFC_IOCTL_FC_TDR:
770 result = cpqfcTS_TargetDeviceReset( ScsiDev, 0);
782 LEAVE("cpqfcTS_ioctl");
787 /* "Release" the Host Bus Adapter...
788 disable interrupts, stop the HBA, release the interrupt,
789 and free all resources */
791 int cpqfcTS_release(struct Scsi_Host *HostAdapter)
793 CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
796 ENTER("cpqfcTS_release");
798 DEBUG_PCI( printk(" cpqfcTS: delete timer...\n"));
799 del_timer( &cpqfcHBAdata->cpqfcTStimer);
801 // disable the hardware...
802 DEBUG_PCI( printk(" disable hardware, destroy queues, free mem\n"));
803 cpqfcHBAdata->fcChip.ResetTachyon( cpqfcHBAdata, CLEAR_FCPORTS);
805 // kill kernel thread
806 if( cpqfcHBAdata->worker_thread ) // (only if exists)
808 DECLARE_MUTEX_LOCKED(sem); // synchronize thread kill
810 cpqfcHBAdata->notify_wt = &sem;
811 DEBUG_PCI( printk(" killing kernel thread\n"));
812 send_sig( SIGKILL, cpqfcHBAdata->worker_thread, 1);
814 cpqfcHBAdata->notify_wt = NULL;
818 cpqfc_free_private_data_pool(cpqfcHBAdata);
819 // free Linux resources
820 DEBUG_PCI( printk(" cpqfcTS: freeing resources...\n"));
821 free_irq( HostAdapter->irq, HostAdapter);
822 scsi_unregister( HostAdapter);
823 release_region( cpqfcHBAdata->fcChip.Registers.IOBaseL, 0xff);
824 release_region( cpqfcHBAdata->fcChip.Registers.IOBaseU, 0xff);
825 /* we get "vfree: bad address" executing this - need to investigate...
826 if( (void*)((unsigned long)cpqfcHBAdata->fcChip.Registers.MemBase) !=
827 cpqfcHBAdata->fcChip.Registers.ReMapMemBase)
828 vfree( cpqfcHBAdata->fcChip.Registers.ReMapMemBase);
830 pci_disable_device( cpqfcHBAdata->PciDev);
832 LEAVE("cpqfcTS_release");
837 const char * cpqfcTS_info(struct Scsi_Host *HostAdapter)
839 static char buf[300];
841 int BusSpeed, BusWidth;
843 // get the pointer to our Scsi layer HBA buffer
844 cpqfcHBA = (CPQFCHBA *)HostAdapter->hostdata;
846 BusWidth = (cpqfcHBA->fcChip.Registers.PCIMCTR &0x4) > 0 ?
849 if( cpqfcHBA->fcChip.Registers.TYconfig.value & 0x80000000)
855 "%s: WWN %08X%08X\n on PCI bus %d device 0x%02x irq %d IObaseL 0x%x, MEMBASE 0x%x\nPCI bus width %d bits, bus speed %d MHz\nFCP-SCSI Driver v%d.%d.%d",
856 cpqfcHBA->fcChip.Name,
857 cpqfcHBA->fcChip.Registers.wwn_hi,
858 cpqfcHBA->fcChip.Registers.wwn_lo,
859 cpqfcHBA->PciDev->bus->number,
860 cpqfcHBA->PciDev->device,
862 cpqfcHBA->fcChip.Registers.IOBaseL,
863 cpqfcHBA->fcChip.Registers.MemBase,
866 VER_MAJOR, VER_MINOR, VER_SUBMINOR
870 cpqfcTSDecodeGBICtype( &cpqfcHBA->fcChip, &buf[ strlen(buf)]);
871 cpqfcTSGetLPSM( &cpqfcHBA->fcChip, &buf[ strlen(buf)]);
876 // /proc/scsi support. The following routines allow us to do 'normal'
877 // sprintf like calls to return the currently requested piece (buflenght
878 // chars, starting at bufoffset) of the file. Although procfs allows for
879 // a 1 Kb bytes overflow after te supplied buffer, I consider it bad
880 // programming to use it to make programming a little simpler. This piece
881 // of coding is borrowed from ncr53c8xx.c with some modifications
885 char *buffer; // Pointer to output buffer
886 int buflength; // It's length
887 int bufoffset; // File offset corresponding with buf[0]
888 int buffillen; // Current filled length
889 int filpos; // Current file offset
892 static void copy_mem_info(struct info_str *info, char *data, int datalen)
895 if (info->filpos < info->bufoffset) { // Current offset before buffer offset
896 if (info->filpos + datalen <= info->bufoffset) {
897 info->filpos += datalen; // Discard if completely before buffer
899 } else { // Partial copy, set to begin
900 data += (info->bufoffset - info->filpos);
901 datalen -= (info->bufoffset - info->filpos);
902 info->filpos = info->bufoffset;
906 info->filpos += datalen; // Update current offset
908 if (info->buffillen == info->buflength) // Buffer full, discard
911 if (info->buflength - info->buffillen < datalen) // Overflows buffer ?
912 datalen = info->buflength - info->buffillen;
914 memcpy(info->buffer + info->buffillen, data, datalen);
915 info->buffillen += datalen;
918 static int copy_info(struct info_str *info, char *fmt, ...)
925 len = vsprintf(buf, fmt, args);
928 copy_mem_info(info, buf, len);
933 // Routine to get data for /proc RAM filesystem
935 int cpqfcTS_proc_info (struct Scsi_Host *host, char *buffer, char **start, off_t offset, int length,
938 struct scsi_cmnd *DumCmnd;
939 struct scsi_device *ScsiDev;
941 struct info_str info;
944 PFC_LOGGEDIN_PORT pLoggedInPort;
947 if (inout) return -EINVAL;
949 // get the pointer to our Scsi layer HBA buffer
950 cpqfcHBA = (CPQFCHBA *)host->hostdata;
951 fcChip = &cpqfcHBA->fcChip;
955 info.buffer = buffer;
956 info.buflength = length;
957 info.bufoffset = offset;
960 copy_info(&info, "Driver version = %d.%d.%d", VER_MAJOR, VER_MINOR, VER_SUBMINOR);
961 cpqfcTSDecodeGBICtype( &cpqfcHBA->fcChip, &buf[0]);
962 cpqfcTSGetLPSM( &cpqfcHBA->fcChip, &buf[ strlen(buf)]);
963 copy_info(&info, "%s\n", buf);
965 #define DISPLAY_WWN_INFO
966 #ifdef DISPLAY_WWN_INFO
967 ScsiDev = scsi_get_host_dev (host);
970 DumCmnd = scsi_get_command (ScsiDev, GFP_KERNEL);
972 scsi_free_host_dev (ScsiDev);
975 copy_info(&info, "WWN database: (\"port_id: 000000\" means disconnected)\n");
976 for ( Chan=0; Chan <= host->max_channel; Chan++) {
977 DumCmnd->device->channel = Chan;
978 for (Targ=0; Targ <= host->max_id; Targ++) {
979 DumCmnd->device->id = Targ;
980 if ((pLoggedInPort = fcFindLoggedInPort( fcChip,
981 DumCmnd, // search Scsi Nexus
982 0, // DON'T search list for FC port id
983 NULL, // DON'T search list for FC WWN
984 NULL))){ // DON'T care about end of list
985 copy_info(&info, "Host: scsi%d Channel: %02d TargetId: %02d -> WWN: ",
986 host->host_no, Chan, Targ);
987 for( i=3; i>=0; i--) // copy the LOGIN port's WWN
988 copy_info(&info, "%02X", pLoggedInPort->u.ucWWN[i]);
989 for( i=7; i>3; i--) // copy the LOGIN port's WWN
990 copy_info(&info, "%02X", pLoggedInPort->u.ucWWN[i]);
991 copy_info(&info, " port_id: %06X\n", pLoggedInPort->port_id);
996 scsi_put_command (DumCmnd);
997 scsi_free_host_dev (ScsiDev);
1004 // Unfortunately, the proc_info buffer isn't big enough
1005 // for everything we would like...
1006 // For FC stats, compile this and turn off WWN stuff above
1007 //#define DISPLAY_FC_STATS
1008 #ifdef DISPLAY_FC_STATS
1009 // get the Fibre Channel statistics
1011 int DeltaSecs = (jiffies - cpqfcHBA->fcStatsTime) / HZ;
1012 int days,hours,minutes,secs;
1014 days = DeltaSecs / (3600*24); // days
1015 hours = (DeltaSecs% (3600*24)) / 3600; // hours
1016 minutes = (DeltaSecs%3600 /60); // minutes
1017 secs = DeltaSecs%60; // secs
1018 copy_info( &info, "Fibre Channel Stats (time dd:hh:mm:ss %02u:%02u:%02u:%02u\n",
1019 days, hours, minutes, secs);
1022 cpqfcHBA->fcStatsTime = jiffies; // (for next delta)
1024 copy_info( &info, " LinkUp %9u LinkDown %u\n",
1025 fcChip->fcStats.linkUp, fcChip->fcStats.linkDown);
1027 copy_info( &info, " Loss of Signal %9u Loss of Sync %u\n",
1028 fcChip->fcStats.LossofSignal, fcChip->fcStats.LossofSync);
1030 copy_info( &info, " Discarded Frames %9u Bad CRC Frame %u\n",
1031 fcChip->fcStats.Dis_Frm, fcChip->fcStats.Bad_CRC);
1033 copy_info( &info, " TACH LinkFailTX %9u TACH LinkFailRX %u\n",
1034 fcChip->fcStats.linkFailTX, fcChip->fcStats.linkFailRX);
1036 copy_info( &info, " TACH RxEOFa %9u TACH Elastic Store %u\n",
1037 fcChip->fcStats.Rx_EOFa, fcChip->fcStats.e_stores);
1039 copy_info( &info, " BufferCreditWait %9uus TACH FM Inits %u\n",
1040 fcChip->fcStats.BB0_Timer*10, fcChip->fcStats.FMinits );
1042 copy_info( &info, " FC-2 Timeouts %9u FC-2 Logouts %u\n",
1043 fcChip->fcStats.timeouts, fcChip->fcStats.logouts);
1045 copy_info( &info, " FC-2 Aborts %9u FC-4 Aborts %u\n",
1046 fcChip->fcStats.FC2aborted, fcChip->fcStats.FC4aborted);
1048 // clear the counters
1049 cpqfcTSClearLinkStatusCounters( fcChip);
1052 return info.buffillen;
1058 UCHAR *ScsiToAscii( UCHAR ScsiCommand)
1063 Routine Description:
1065 Converts a SCSI command to a text string for debugging purposes.
1070 ScsiCommand -- hex value SCSI Command
1075 An ASCII, null-terminated string if found, else returns NULL.
1077 Original code from M. McGowen, Compaq
1081 switch (ScsiCommand)
1084 return( "Test Unit Ready" );
1087 return( "Rezero Unit or Rewind" );
1090 return( "Request Block Address" );
1093 return( "Requese Sense" );
1096 return( "Format Unit" );
1099 return( "Read Block Limits" );
1102 return( "Reassign Blocks" );
1105 return( "Read (6)" );
1108 return( "Write (6)" );
1111 return( "Seek (6)" );
1114 return( "Inquiry" );
1117 return( "Mode Select (6)" );
1120 return( "Reserve" );
1123 return( "Release" );
1126 return( "ModeSen(6)" );
1129 return( "Start/Stop Unit" );
1132 return( "Receive Diagnostic Results" );
1135 return( "Send Diagnostic" );
1138 return( "Read Capacity" );
1141 return( "Read (10)" );
1144 return( "Write (10)" );
1147 return( "Seek (10)" );
1150 return( "Write and Verify" );
1156 return( "Pre-Fetch" );
1159 return( "Synchronize Cache" );
1162 return( "Read Defect Data (10)" );
1165 return( "Write Buffer" );
1168 return( "Read Buffer" );
1171 return( "Read Long" );
1174 return( "Write Long" );
1177 return( "Write Same" );
1180 return( "Log Select" );
1183 return( "Log Sense" );
1186 return( "Reserve (10)" );
1189 return( "Release (10)" );
1192 return( "ReportLuns" );
1195 return( "Read Defect Data (12)" );
1198 return( "Peripheral Device Addressing SCSI Passthrough" );
1201 return( "Compaq Array Firmware Passthrough" );
1207 } // end ScsiToAscii()
1209 void cpqfcTS_print_scsi_cmd(Scsi_Cmnd * cmd)
1212 printk("cpqfcTS: (%s) chnl 0x%02x, trgt = 0x%02x, lun = 0x%02x, cmd_len = 0x%02x\n",
1213 ScsiToAscii( cmd->cmnd[0]), cmd->channel, cmd->target, cmd->lun, cmd->cmd_len);
1215 if( cmd->cmnd[0] == 0) // Test Unit Ready?
1219 printk("Cmnd->request_bufflen = 0x%X, ->use_sg = %d, ->bufflen = %d\n",
1220 cmd->request_bufflen, cmd->use_sg, cmd->bufflen);
1221 printk("Cmnd->request_buffer = %p, ->sglist_len = %d, ->buffer = %p\n",
1222 cmd->request_buffer, cmd->sglist_len, cmd->buffer);
1223 for (i = 0; i < cmd->cmd_len; i++)
1224 printk("0x%02x ", cmd->cmnd[i]);
1230 #endif /* DEBUG_CMND */
1235 static void QueCmndOnBoardLock( CPQFCHBA *cpqfcHBAdata, Scsi_Cmnd *Cmnd)
1239 for( i=0; i< CPQFCTS_REQ_QUEUE_LEN; i++)
1240 { // find spare slot
1241 if( cpqfcHBAdata->BoardLockCmnd[i] == NULL )
1243 cpqfcHBAdata->BoardLockCmnd[i] = Cmnd;
1244 // printk(" BoardLockCmnd[%d] %p Queued, chnl/target/lun %d/%d/%d\n",
1245 // i,Cmnd, Cmnd->channel, Cmnd->target, Cmnd->lun);
1249 if( i >= CPQFCTS_REQ_QUEUE_LEN)
1251 printk(" cpqfcTS WARNING: Lost Cmnd %p on BoardLock Q full!", Cmnd);
1257 static void QueLinkDownCmnd( CPQFCHBA *cpqfcHBAdata, Scsi_Cmnd *Cmnd)
1261 // Remember the command ptr so we can return; we'll complete when
1262 // the device comes back, causing immediate retry
1263 for( indx=0; indx < CPQFCTS_REQ_QUEUE_LEN; indx++)//, SCptr++)
1265 if( cpqfcHBAdata->LinkDnCmnd[indx] == NULL ) // available?
1267 #ifdef DUMMYCMND_DBG
1268 printk(" @add Cmnd %p to LnkDnCmnd[%d]@ ", Cmnd,indx);
1270 cpqfcHBAdata->LinkDnCmnd[indx] = Cmnd;
1275 if( indx >= CPQFCTS_REQ_QUEUE_LEN ) // no space for Cmnd??
1277 // this will result in an _abort call later (with possible trouble)
1278 printk("no buffer for LinkDnCmnd!! %p\n", Cmnd);
1286 // The file <scsi/scsi_host.h> says not to call scsi_done from
1287 // inside _queuecommand, so we'll do it from the heartbeat timer
1288 // (clarification: Turns out it's ok to call scsi_done from queuecommand
1289 // for cases that don't go to the hardware like scsi cmds destined
1290 // for LUNs we know don't exist, so this code might be simplified...)
1292 static void QueBadTargetCmnd( CPQFCHBA *cpqfcHBAdata, Scsi_Cmnd *Cmnd)
1295 // printk(" can't find target %d\n", Cmnd->target);
1297 for( i=0; i< CPQFCTS_MAX_TARGET_ID; i++)
1298 { // find spare slot
1299 if( cpqfcHBAdata->BadTargetCmnd[i] == NULL )
1301 cpqfcHBAdata->BadTargetCmnd[i] = Cmnd;
1302 // printk(" BadTargetCmnd[%d] %p Queued, chnl/target/lun %d/%d/%d\n",
1303 // i,Cmnd, Cmnd->channel, Cmnd->target, Cmnd->lun);
1310 // This is the "main" entry point for Linux Scsi commands --
1311 // it all starts here.
1313 int cpqfcTS_queuecommand(Scsi_Cmnd *Cmnd, void (* done)(Scsi_Cmnd *))
1315 struct Scsi_Host *HostAdapter = Cmnd->device->host;
1316 CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
1317 PTACHYON fcChip = &cpqfcHBAdata->fcChip;
1318 TachFCHDR_GCMND fchs; // only use for FC destination id field
1319 PFC_LOGGEDIN_PORT pLoggedInPort;
1320 ULONG ulStatus, SESTtype;
1326 ENTER("cpqfcTS_queuecommand");
1328 PCI_TRACEO( (ULONG)Cmnd, 0x98)
1331 Cmnd->scsi_done = done;
1333 cpqfcTS_print_scsi_cmd( Cmnd);
1336 // prevent board contention with kernel thread...
1338 if( cpqfcHBAdata->BoardLock )
1340 // printk(" @BrdLck Hld@ ");
1341 QueCmndOnBoardLock( cpqfcHBAdata, Cmnd);
1347 // in the current system (2.2.12), this routine is called
1348 // after spin_lock_irqsave(), so INTs are disabled. However,
1349 // we might have something pending in the LinkQ, which
1350 // might cause the WorkerTask to run. In case that
1351 // happens, make sure we lock it out.
1356 CPQ_SPINLOCK_HBA( cpqfcHBAdata)
1359 // can we find an FC device mapping to this SCSI target?
1360 pLoggedInPort = fcFindLoggedInPort( fcChip,
1361 Cmnd, // search Scsi Nexus
1362 0, // DON'T search linked list for FC port id
1363 NULL, // DON'T search linked list for FC WWN
1364 NULL); // DON'T care about end of list
1366 if( pLoggedInPort == NULL ) // not found!
1368 // printk(" @Q bad targ cmnd %p@ ", Cmnd);
1369 QueBadTargetCmnd( cpqfcHBAdata, Cmnd);
1371 else if (Cmnd->device->lun >= CPQFCTS_MAX_LUN)
1373 printk(KERN_WARNING "cpqfc: Invalid LUN: %d\n", Cmnd->device->lun);
1374 QueBadTargetCmnd( cpqfcHBAdata, Cmnd);
1377 else // we know what FC device to send to...
1380 // does this device support FCP target functions?
1381 // (determined by PRLI field)
1383 if( !(pLoggedInPort->fcp_info & TARGET_FUNCTION) )
1385 printk(" Doesn't support TARGET functions port_id %Xh\n",
1386 pLoggedInPort->port_id );
1387 QueBadTargetCmnd( cpqfcHBAdata, Cmnd);
1390 // In this case (previous login OK), the device is temporarily
1391 // unavailable waiting for re-login, in which case we expect it
1392 // to be back in between 25 - 500ms.
1393 // If the FC port doesn't log back in within several seconds
1394 // (i.e. implicit "logout"), or we get an explicit logout,
1395 // we set "device_blocked" in Scsi_Device struct; in this
1396 // case 30 seconds will elapse before Linux/Scsi sends another
1397 // command to the device.
1398 else if( pLoggedInPort->prli != TRUE )
1400 // printk("Device (Chnl/Target %d/%d) invalid PRLI, port_id %06lXh\n",
1401 // Cmnd->channel, Cmnd->target, pLoggedInPort->port_id);
1402 QueLinkDownCmnd( cpqfcHBAdata, Cmnd);
1403 // Need to use "blocked" flag??
1404 // Cmnd->device->device_blocked = TRUE; // just let it timeout
1406 else // device supports TARGET functions, and is logged in...
1408 // (context of fchs is to "reply" to...)
1409 fchs.s_id = pLoggedInPort->port_id; // destination FC address
1411 // what is the data direction? For data TO the device,
1412 // we need IWE (Intiator Write Entry). Otherwise, IRE.
1414 if( Cmnd->cmnd[0] == WRITE_10 ||
1415 Cmnd->cmnd[0] == WRITE_6 ||
1416 Cmnd->cmnd[0] == WRITE_BUFFER ||
1417 Cmnd->cmnd[0] == VENDOR_WRITE_OPCODE || // CPQ specific
1418 Cmnd->cmnd[0] == MODE_SELECT )
1420 SESTtype = SCSI_IWE; // data from HBA to Device
1423 SESTtype = SCSI_IRE; // data from Device to HBA
1425 ulStatus = cpqfcTSBuildExchange(
1427 SESTtype, // e.g. Initiator Read Entry (IRE)
1428 &fchs, // we are originator; only use d_id
1429 Cmnd, // Linux SCSI command (with scatter/gather list)
1430 &ExchangeID );// fcController->fcExchanges index, -1 if failed
1432 if( !ulStatus ) // Exchange setup?
1435 if( cpqfcHBAdata->BoardLock )
1437 TriggerHBA( fcChip->Registers.ReMapMemBase, 0);
1438 printk(" @bl! %d, xID %Xh@ ", current->pid, ExchangeID);
1441 ulStatus = cpqfcTSStartExchange( cpqfcHBAdata, ExchangeID );
1444 PCI_TRACEO( ExchangeID, 0xB8)
1445 // submitted to Tach's Outbound Que (ERQ PI incremented)
1446 // waited for completion for ELS type (Login frames issued
1450 // check reason for Exchange not being started - we might
1451 // want to Queue and start later, or fail with error
1453 printk("quecommand: cpqfcTSStartExchange failed: %Xh\n", ulStatus );
1455 } // end good BuildExchange status
1457 else // SEST table probably full -- why? hardware hang?
1459 printk("quecommand: cpqfcTSBuildExchange faild: %Xh\n", ulStatus);
1461 } // end can't do FCP-SCSI target functions
1462 } // end can't find target (FC device)
1464 CPQ_SPINUNLOCK_HBA( cpqfcHBAdata)
1467 PCI_TRACEO( (ULONG)Cmnd, 0x9C)
1468 LEAVE("cpqfcTS_queuecommand");
1473 // Entry point for upper Scsi layer intiated abort. Typically
1474 // this is called if the command (for hard disk) fails to complete
1475 // in 30 seconds. This driver intends to complete all disk commands
1476 // within Exchange ".timeOut" seconds (now 7) with target status, or
1477 // in case of ".timeOut" expiration, a DID_SOFT_ERROR which causes
1479 // If any disk commands get the _abort call, except for the case that
1480 // the physical device was removed or unavailable due to hardware
1481 // errors, it should be considered a driver error and reported to
1484 int cpqfcTS_abort(Scsi_Cmnd *Cmnd)
1486 // printk(" cpqfcTS_abort called?? \n");
1490 int cpqfcTS_eh_abort(Scsi_Cmnd *Cmnd)
1493 struct Scsi_Host *HostAdapter = Cmnd->device->host;
1494 // get the pointer to our Scsi layer HBA buffer
1495 CPQFCHBA *cpqfcHBAdata = (CPQFCHBA *)HostAdapter->hostdata;
1496 PTACHYON fcChip = &cpqfcHBAdata->fcChip;
1497 FC_EXCHANGES *Exchanges = fcChip->Exchanges;
1499 ENTER("cpqfcTS_eh_abort");
1501 Cmnd->result = DID_ABORT <<16; // assume we'll find it
1503 printk(" @Linux _abort Scsi_Cmnd %p ", Cmnd);
1504 // See if we can find a Cmnd pointer that matches...
1505 // The most likely case is we accepted the command
1506 // from Linux Scsi (e.g. ceated a SEST entry) and it
1507 // got lost somehow. If we can't find any reference
1508 // to the passed pointer, we can only presume it
1509 // got completed as far as our driver is concerned.
1510 // If we found it, we will try to abort it through
1511 // common mechanism. If FC ABTS is successful (ACC)
1512 // or is rejected (RJT) by target, we will call
1513 // Scsi "done" quickly. Otherwise, the ABTS will timeout
1514 // and we'll call "done" later.
1516 // Search the SEST exchanges for a matching Cmnd ptr.
1517 for( i=0; i< TACH_SEST_LEN; i++)
1519 if( Exchanges->fcExchange[i].Cmnd == Cmnd )
1523 printk(" x_ID %Xh, type %Xh\n", i, Exchanges->fcExchange[i].type);
1525 Exchanges->fcExchange[i].status = INITIATOR_ABORT; // seconds default
1526 Exchanges->fcExchange[i].timeOut = 10; // seconds default (changed later)
1528 // Since we need to immediately return the aborted Cmnd to Scsi
1529 // upper layers, we can't make future reference to any of its
1530 // fields (e.g the Nexus).
1532 cpqfcTSPutLinkQue( cpqfcHBAdata, BLS_ABTS, &i);
1538 if( i >= TACH_SEST_LEN ) // didn't find Cmnd ptr in chip's SEST?
1540 // now search our non-SEST buffers (i.e. Cmnd waiting to
1541 // start on the HBA or waiting to complete with error for retry).
1543 // first check BadTargetCmnd
1544 for( i=0; i< CPQFCTS_MAX_TARGET_ID; i++)
1546 if( cpqfcHBAdata->BadTargetCmnd[i] == Cmnd )
1548 cpqfcHBAdata->BadTargetCmnd[i] = NULL;
1549 printk("in BadTargetCmnd Q\n");
1554 // if not found above...
1556 for( i=0; i < CPQFCTS_REQ_QUEUE_LEN; i++)
1558 if( cpqfcHBAdata->LinkDnCmnd[i] == Cmnd )
1560 cpqfcHBAdata->LinkDnCmnd[i] = NULL;
1561 printk("in LinkDnCmnd Q\n");
1567 for( i=0; i< CPQFCTS_REQ_QUEUE_LEN; i++)
1568 { // find spare slot
1569 if( cpqfcHBAdata->BoardLockCmnd[i] == Cmnd )
1571 cpqfcHBAdata->BoardLockCmnd[i] = NULL;
1572 printk("in BoardLockCmnd Q\n");
1577 Cmnd->result = DID_ERROR <<16; // Hmmm...
1578 printk("Not found! ");
1585 LEAVE("cpqfcTS_eh_abort");
1586 return 0; // (see scsi.h)
1590 // FCP-SCSI Target Device Reset
1591 // See dpANS Fibre Channel Protocol for SCSI
1592 // X3.269-199X revision 12, pg 25
1594 #ifdef SUPPORT_RESET
1596 int cpqfcTS_TargetDeviceReset( Scsi_Device *ScsiDev,
1597 unsigned int reset_flags)
1599 int timeout = 10*HZ;
1604 Scsi_Device * SDpnt;
1606 // FIXME, cpqfcTS_TargetDeviceReset needs to be fixed
1607 // similarly to how the passthrough ioctl was fixed
1608 // around the 2.5.30 kernel. Scsi_Cmnd replaced with
1609 // Scsi_Request, etc.
1610 // For now, so people don't fall into a hole...
1612 // printk(" ENTERING cpqfcTS_TargetDeviceReset() - flag=%d \n",reset_flags);
1614 if (ScsiDev->host->eh_active) return FAILED;
1616 memset( scsi_cdb, 0, sizeof( scsi_cdb));
1618 scsi_cdb[0] = RELEASE;
1620 SCpnt = scsi_get_command(ScsiDev, GFP_KERNEL);
1622 CPQFC_DECLARE_COMPLETION(wait);
1624 SCpnt->SCp.buffers_residual = FCP_TARGET_RESET;
1626 // FIXME: this would panic, SCpnt->request would be NULL.
1627 SCpnt->request->CPQFC_WAITING = &wait;
1628 scsi_do_cmd(SCpnt, scsi_cdb, NULL, 0, my_ioctl_done, timeout, retries);
1629 CPQFC_WAIT_FOR_COMPLETION(&wait);
1630 SCpnt->request->CPQFC_WAITING = NULL;
1634 if(driver_byte(SCpnt->result) != 0)
1635 switch(SCpnt->sense_buffer[2] & 0xf) {
1636 case ILLEGAL_REQUEST:
1637 if(cmd[0] == ALLOW_MEDIUM_REMOVAL) dev->lockable = 0;
1638 else printk("SCSI device (ioctl) reports ILLEGAL REQUEST.\n");
1640 case NOT_READY: // This happens if there is no disc in drive
1641 if(dev->removable && (cmd[0] != TEST_UNIT_READY)){
1642 printk(KERN_INFO "Device not ready. Make sure there is a disc in the drive.\n");
1645 case UNIT_ATTENTION:
1646 if (dev->removable){
1648 SCpnt->result = 0; // This is no longer considered an error
1649 // gag this error, VFS will log it anyway /axboe
1650 // printk(KERN_INFO "Disc change detected.\n");
1653 default: // Fall through for non-removable media
1654 printk("SCSI error: host %d id %d lun %d return code = %x\n",
1659 printk("\tSense class %x, sense error %x, extended sense %x\n",
1660 sense_class(SCpnt->sense_buffer[0]),
1661 sense_error(SCpnt->sense_buffer[0]),
1662 SCpnt->sense_buffer[2] & 0xf);
1665 result = SCpnt->result;
1667 SDpnt = SCpnt->device;
1668 scsi_put_command(SCpnt);
1671 // printk(" LEAVING cpqfcTS_TargetDeviceReset() - return SUCCESS \n");
1676 int cpqfcTS_TargetDeviceReset( Scsi_Device *ScsiDev,
1677 unsigned int reset_flags)
1682 #endif /* SUPPORT_RESET */
1684 int cpqfcTS_eh_device_reset(Scsi_Cmnd *Cmnd)
1687 Scsi_Device *SDpnt = Cmnd->device;
1688 // printk(" ENTERING cpqfcTS_eh_device_reset() \n");
1689 spin_unlock_irq(Cmnd->device->host->host_lock);
1690 retval = cpqfcTS_TargetDeviceReset( SDpnt, 0);
1691 spin_lock_irq(Cmnd->device->host->host_lock);
1696 int cpqfcTS_reset(Scsi_Cmnd *Cmnd, unsigned int reset_flags)
1699 ENTER("cpqfcTS_reset");
1701 LEAVE("cpqfcTS_reset");
1702 return SCSI_RESET_ERROR; /* Bus Reset Not supported */
1705 /* This function determines the bios parameters for a given
1706 harddisk. These tend to be numbers that are made up by the
1707 host adapter. Parameters:
1708 size, device number, list (heads, sectors,cylinders).
1712 int cpqfcTS_biosparam(struct scsi_device *sdev, struct block_device *n,
1713 sector_t capacity, int ip[])
1715 int size = capacity;
1717 ENTER("cpqfcTS_biosparam");
1726 ip[2] = size / (ip[0] * ip[1]);
1729 LEAVE("cpqfcTS_biosparam");
1735 irqreturn_t cpqfcTS_intr_handler( int irq,
1737 struct pt_regs *regs)
1740 unsigned long flags, InfLoopBrk=0;
1741 struct Scsi_Host *HostAdapter = dev_id;
1742 CPQFCHBA *cpqfcHBA = (CPQFCHBA *)HostAdapter->hostdata;
1743 int MoreMessages = 1; // assume we have something to do
1747 ENTER("intr_handler");
1748 spin_lock_irqsave( HostAdapter->host_lock, flags);
1750 IntPending = readb( cpqfcHBA->fcChip.Registers.INTPEND.address);
1752 // broken boards can generate messages forever, so
1753 // prevent the infinite loop
1754 #define INFINITE_IMQ_BREAK 10000
1758 // mask our HBA interrupts until we handle it...
1759 writeb( 0, cpqfcHBA->fcChip.Registers.INTEN.address);
1761 if( IntPending & 0x4) // "INT" - Tach wrote to IMQ
1763 while( (++InfLoopBrk < INFINITE_IMQ_BREAK) && (MoreMessages ==1) )
1765 MoreMessages = CpqTsProcessIMQEntry( HostAdapter); // ret 0 when done
1767 if( InfLoopBrk >= INFINITE_IMQ_BREAK )
1769 printk("WARNING: Compaq FC adapter generating excessive INTs -REPLACE\n");
1770 printk("or investigate alternate causes (e.g. physical FC layer)\n");
1773 else // working normally - re-enable INTs and continue
1774 writeb( 0x1F, cpqfcHBA->fcChip.Registers.INTEN.address);
1776 } // (...ProcessIMQEntry() clears INT by writing IMQ consumer)
1777 else // indications of errors or problems...
1778 // these usually indicate critical system hardware problems.
1780 if( IntPending & 0x10 )
1781 printk(" cpqfcTS adapter external memory parity error detected\n");
1782 if( IntPending & 0x8 )
1783 printk(" cpqfcTS adapter PCI master address crossed 45-bit boundary\n");
1784 if( IntPending & 0x2 )
1785 printk(" cpqfcTS adapter DMA error detected\n");
1786 if( IntPending & 0x1 ) {
1788 printk(" cpqfcTS adapter PCI error detected\n");
1789 IntStat = readb( cpqfcHBA->fcChip.Registers.INTSTAT.address);
1790 printk("cpqfc: ISR = 0x%02x\n", IntStat);
1791 if (IntStat & 0x1) {
1793 /* read the pci status register */
1794 pci_read_config_word(cpqfcHBA->PciDev, 0x06, &pcistat);
1795 printk("PCI status register is 0x%04x\n", pcistat);
1796 if (pcistat & 0x8000) printk("Parity Error Detected.\n");
1797 if (pcistat & 0x4000) printk("Signalled System Error\n");
1798 if (pcistat & 0x2000) printk("Received Master Abort\n");
1799 if (pcistat & 0x1000) printk("Received Target Abort\n");
1800 if (pcistat & 0x0800) printk("Signalled Target Abort\n");
1802 if (IntStat & 0x4) printk("(INT)\n");
1804 printk("CRS: PCI master address crossed 46 bit bouandary\n");
1805 if (IntStat & 0x10) printk("MRE: external memory parity error.\n");
1809 spin_unlock_irqrestore( HostAdapter->host_lock, flags);
1810 LEAVE("intr_handler");
1811 return IRQ_RETVAL(handled);
1817 int cpqfcTSDecodeGBICtype( PTACHYON fcChip, char cErrorString[])
1819 // Verify GBIC type (if any) and correct Tachyon Port State Machine
1820 // (GBIC) module definition is:
1821 // GPIO1, GPIO0, GPIO4 for MD2, MD1, MD0. The input states appear
1822 // to be inverted -- i.e., a setting of 111 is read when there is NO
1823 // GBIC present. The Module Def (MD) spec says 000 is "no GBIC"
1824 // Hard code the bit states to detect Copper,
1825 // Long wave (single mode), Short wave (multi-mode), and absent GBIC
1829 sprintf( cErrorString, "\nGBIC detected: ");
1831 ulBuff = fcChip->Registers.TYstatus.value & 0x13;
1834 case 0x13: // GPIO4, GPIO1, GPIO0 = 111; no GBIC!
1835 sprintf( &cErrorString[ strlen( cErrorString)],
1840 case 0x11: // Copper GBIC detected
1841 sprintf( &cErrorString[ strlen( cErrorString)],
1845 case 0x10: // Long-wave (single mode) GBIC detected
1846 sprintf( &cErrorString[ strlen( cErrorString)],
1849 case 0x1: // Short-wave (multi mode) GBIC detected
1850 sprintf( &cErrorString[ strlen( cErrorString)],
1853 default: // unknown GBIC - presumably it will work (?)
1854 sprintf( &cErrorString[ strlen( cErrorString)],
1858 } // end switch GBIC detection
1868 int cpqfcTSGetLPSM( PTACHYON fcChip, char cErrorString[])
1870 // Tachyon's Frame Manager LPSM in LinkDown state?
1871 // (For non-loop port, check PSM instead.)
1872 // return string with state and FALSE is Link Down
1876 if( fcChip->Registers.FMstatus.value & 0x80 )
1881 sprintf( &cErrorString[ strlen( cErrorString)],
1883 (fcChip->Registers.FMstatus.value >>4) & 0xf );
1886 switch( fcChip->Registers.FMstatus.value & 0xF0)
1890 sprintf( &cErrorString[ strlen( cErrorString)], "ARB");
1893 sprintf( &cErrorString[ strlen( cErrorString)], "ARBwon");
1896 sprintf( &cErrorString[ strlen( cErrorString)], "OPEN");
1899 sprintf( &cErrorString[ strlen( cErrorString)], "OPENed");
1902 sprintf( &cErrorString[ strlen( cErrorString)], "XmitCLS");
1905 sprintf( &cErrorString[ strlen( cErrorString)], "RxCLS");
1908 sprintf( &cErrorString[ strlen( cErrorString)], "Xfer");
1911 sprintf( &cErrorString[ strlen( cErrorString)], "Init");
1914 sprintf( &cErrorString[ strlen( cErrorString)], "O-IInitFin");
1917 sprintf( &cErrorString[ strlen( cErrorString)], "O-IProtocol");
1920 sprintf( &cErrorString[ strlen( cErrorString)], "O-ILipRcvd");
1923 sprintf( &cErrorString[ strlen( cErrorString)], "HostControl");
1926 sprintf( &cErrorString[ strlen( cErrorString)], "LoopFail");
1929 sprintf( &cErrorString[ strlen( cErrorString)], "Offline");
1932 sprintf( &cErrorString[ strlen( cErrorString)], "OldPort");
1936 sprintf( &cErrorString[ strlen( cErrorString)], "Monitor");
1947 #include "linux/slab.h"
1949 // Dynamic memory allocation alignment routines
1950 // HP's Tachyon Fibre Channel Controller chips require
1951 // certain memory queues and register pointers to be aligned
1952 // on various boundaries, usually the size of the Queue in question.
1953 // Alignment might be on 2, 4, 8, ... or even 512 byte boundaries.
1954 // Since most O/Ss don't allow this (usually only Cache aligned -
1955 // 32-byte boundary), these routines provide generic alignment (after
1956 // O/S allocation) at any boundary, and store the original allocated
1957 // pointer for deletion (O/S free function). Typically, we expect
1958 // these functions to only be called at HBA initialization and
1959 // removal time (load and unload times)
1961 // Memory allocation varies by compiler and platform. In the worst case,
1962 // we are only assured BYTE alignment, but in the best case, we can
1963 // request allocation on any desired boundary. Our strategy: pad the
1964 // allocation request size (i.e. waste memory) so that we are assured
1965 // of passing desired boundary near beginning of contiguous space, then
1966 // mask out lower address bits.
1967 // We define the following algorithm:
1968 // allocBoundary - compiler/platform specific address alignment
1969 // in number of bytes (default is single byte; i.e. 1)
1970 // n_alloc - number of bytes application wants @ aligned address
1971 // ab - alignment boundary, in bytes (e.g. 4, 32, ...)
1972 // t_alloc - total allocation needed to ensure desired boundary
1973 // mask - to clear least significant address bits for boundary
1975 // t_alloc = n_alloc + (ab - allocBoundary)
1976 // allocate t_alloc bytes @ alloc_address
1977 // mask = NOT (ab - 1)
1978 // (e.g. if ab=32 _0001 1111 -> _1110 0000
1979 // aligned_address = alloc_address & mask
1980 // set n_alloc bytes to 0
1981 // return aligned_address (NULL if failed)
1983 // If u32_AlignedAddress is non-zero, then search for BaseAddress (stored
1984 // from previous allocation). If found, invoke call to FREE the memory.
1985 // Return NULL if BaseAddress not found
1987 // we need about 8 allocations per HBA. Figuring at most 10 HBAs per server
1988 // size the dynamic_mem array at 80.
1990 void* fcMemManager( struct pci_dev *pdev, ALIGNED_MEM *dynamic_mem,
1991 ULONG n_alloc, ULONG ab, ULONG u32_AlignedAddress,
1992 dma_addr_t *dma_handle)
1994 USHORT allocBoundary=1; // compiler specific - worst case 1
1995 // best case - replace malloc() call
1996 // with function that allocates exactly
1997 // at desired boundary
1999 unsigned long ulAddress;
2001 void *alloc_address = 0; // def. error code / address not found
2002 LONG mask; // must be 32-bits wide!
2004 ENTER("fcMemManager");
2005 if( u32_AlignedAddress ) // are we freeing existing memory?
2007 // printk(" freeing AlignedAddress %Xh\n", u32_AlignedAddress);
2008 for( i=0; i<DYNAMIC_ALLOCATIONS; i++) // look for the base address
2010 // printk("dynamic_mem[%u].AlignedAddress %lX\n", i, dynamic_mem[i].AlignedAddress);
2011 if( dynamic_mem[i].AlignedAddress == u32_AlignedAddress )
2013 alloc_address = dynamic_mem[i].BaseAllocated; // 'success' status
2014 pci_free_consistent(pdev,dynamic_mem[i].size,
2016 dynamic_mem[i].dma_handle);
2017 dynamic_mem[i].BaseAllocated = 0; // clear for next use
2018 dynamic_mem[i].AlignedAddress = 0;
2019 dynamic_mem[i].size = 0;
2020 break; // quit for loop; done
2024 else if( n_alloc ) // want new memory?
2027 t_alloc = n_alloc + (ab - allocBoundary); // pad bytes for alignment
2028 // printk("pci_alloc_consistent() for Tach alignment: %ld bytes\n", t_alloc);
2030 // (would like to) allow thread block to free pages
2031 alloc_address = // total bytes (NumberOfBytes)
2032 pci_alloc_consistent(pdev, t_alloc, &handle);
2034 // now mask off least sig. bits of address
2035 if( alloc_address ) // (only if non-NULL)
2037 // find place to store ptr, so we
2038 // can free it later...
2040 mask = (LONG)(ab - 1); // mask all low-order bits
2041 mask = ~mask; // invert bits
2042 for( i=0; i<DYNAMIC_ALLOCATIONS; i++) // look for free slot
2044 if( dynamic_mem[i].BaseAllocated == 0) // take 1st available
2046 dynamic_mem[i].BaseAllocated = alloc_address;// address from O/S
2047 dynamic_mem[i].dma_handle = handle;
2048 if (dma_handle != NULL)
2050 // printk("handle = %p, ab=%d, boundary = %d, mask=0x%08x\n",
2051 // handle, ab, allocBoundary, mask);
2052 *dma_handle = (dma_addr_t)
2053 ((((ULONG)handle) + (ab - allocBoundary)) & mask);
2055 dynamic_mem[i].size = t_alloc;
2059 ulAddress = (unsigned long)alloc_address;
2061 ulAddress += (ab - allocBoundary); // add the alignment bytes-
2062 // then truncate address...
2063 alloc_address = (void*)(ulAddress & mask);
2065 dynamic_mem[i].AlignedAddress =
2066 (ULONG)(ulAddress & mask); // 32bit Tach address
2067 memset( alloc_address, 0, n_alloc ); // clear new memory
2069 else // O/S dynamic mem alloc failed!
2070 alloc_address = 0; // (for debugging breakpt)
2074 LEAVE("fcMemManager");
2075 return alloc_address; // good (or NULL) address
2079 static Scsi_Host_Template driver_template = {
2080 .detect = cpqfcTS_detect,
2081 .release = cpqfcTS_release,
2082 .info = cpqfcTS_info,
2083 .proc_info = cpqfcTS_proc_info,
2084 .ioctl = cpqfcTS_ioctl,
2085 .queuecommand = cpqfcTS_queuecommand,
2086 .eh_device_reset_handler = cpqfcTS_eh_device_reset,
2087 .eh_abort_handler = cpqfcTS_eh_abort,
2088 .bios_param = cpqfcTS_biosparam,
2089 .can_queue = CPQFCTS_REQ_QUEUE_LEN,
2091 .sg_tablesize = SG_ALL,
2092 .cmd_per_lun = CPQFCTS_CMD_PER_LUN,
2093 .use_clustering = ENABLE_CLUSTERING,
2095 #include "scsi_module.c"