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Linux/drivers/scsi/dpt_i2o.c

  1 /***************************************************************************
  2                           dpti.c  -  description
  3                              -------------------
  4     begin                : Thu Sep 7 2000
  5     copyright            : (C) 2000 by Adaptec
  6 
  7                            July 30, 2001 First version being submitted
  8                            for inclusion in the kernel.  V2.4
  9 
 10     See Documentation/scsi/dpti.txt for history, notes, license info
 11     and credits
 12  ***************************************************************************/
 13 
 14 /***************************************************************************
 15  *                                                                         *
 16  *   This program is free software; you can redistribute it and/or modify  *
 17  *   it under the terms of the GNU General Public License as published by  *
 18  *   the Free Software Foundation; either version 2 of the License, or     *
 19  *   (at your option) any later version.                                   *
 20  *                                                                         *
 21  ***************************************************************************/
 22 /***************************************************************************
 23  * Sat Dec 20 2003 Go Taniguchi <go@turbolinux.co.jp>
 24  - Support 2.6 kernel and DMA-mapping
 25  - ioctl fix for raid tools
 26  - use schedule_timeout in long long loop
 27  **************************************************************************/
 28 
 29 /*#define DEBUG 1 */
 30 /*#define UARTDELAY 1 */
 31 
 32 #include <linux/module.h>
 33 
 34 MODULE_AUTHOR("Deanna Bonds, with _lots_ of help from Mark Salyzyn");
 35 MODULE_DESCRIPTION("Adaptec I2O RAID Driver");
 36 
 37 ////////////////////////////////////////////////////////////////
 38 
 39 #include <linux/ioctl.h>        /* For SCSI-Passthrough */
 40 #include <asm/uaccess.h>
 41 
 42 #include <linux/stat.h>
 43 #include <linux/slab.h>         /* for kmalloc() */
 44 #include <linux/pci.h>          /* for PCI support */
 45 #include <linux/proc_fs.h>
 46 #include <linux/blkdev.h>
 47 #include <linux/delay.h>        /* for udelay */
 48 #include <linux/interrupt.h>
 49 #include <linux/kernel.h>       /* for printk */
 50 #include <linux/sched.h>
 51 #include <linux/reboot.h>
 52 #include <linux/spinlock.h>
 53 #include <linux/dma-mapping.h>
 54 
 55 #include <linux/timer.h>
 56 #include <linux/string.h>
 57 #include <linux/ioport.h>
 58 #include <linux/mutex.h>
 59 
 60 #include <asm/processor.h>      /* for boot_cpu_data */
 61 #include <asm/pgtable.h>
 62 #include <asm/io.h>             /* for virt_to_bus, etc. */
 63 
 64 #include <scsi/scsi.h>
 65 #include <scsi/scsi_cmnd.h>
 66 #include <scsi/scsi_device.h>
 67 #include <scsi/scsi_host.h>
 68 #include <scsi/scsi_tcq.h>
 69 
 70 #include "dpt/dptsig.h"
 71 #include "dpti.h"
 72 
 73 /*============================================================================
 74  * Create a binary signature - this is read by dptsig
 75  * Needed for our management apps
 76  *============================================================================
 77  */
 78 static DEFINE_MUTEX(adpt_mutex);
 79 static dpt_sig_S DPTI_sig = {
 80         {'d', 'P', 't', 'S', 'i', 'G'}, SIG_VERSION,
 81 #ifdef __i386__
 82         PROC_INTEL, PROC_386 | PROC_486 | PROC_PENTIUM | PROC_SEXIUM,
 83 #elif defined(__ia64__)
 84         PROC_INTEL, PROC_IA64,
 85 #elif defined(__sparc__)
 86         PROC_ULTRASPARC, PROC_ULTRASPARC,
 87 #elif defined(__alpha__)
 88         PROC_ALPHA, PROC_ALPHA,
 89 #else
 90         (-1),(-1),
 91 #endif
 92          FT_HBADRVR, 0, OEM_DPT, OS_LINUX, CAP_OVERLAP, DEV_ALL,
 93         ADF_ALL_SC5, 0, 0, DPT_VERSION, DPT_REVISION, DPT_SUBREVISION,
 94         DPT_MONTH, DPT_DAY, DPT_YEAR, "Adaptec Linux I2O RAID Driver"
 95 };
 96 
 97 
 98 
 99 
100 /*============================================================================
101  * Globals
102  *============================================================================
103  */
104 
105 static DEFINE_MUTEX(adpt_configuration_lock);
106 
107 static struct i2o_sys_tbl *sys_tbl;
108 static dma_addr_t sys_tbl_pa;
109 static int sys_tbl_ind;
110 static int sys_tbl_len;
111 
112 static adpt_hba* hba_chain = NULL;
113 static int hba_count = 0;
114 
115 static struct class *adpt_sysfs_class;
116 
117 static long adpt_unlocked_ioctl(struct file *, unsigned int, unsigned long);
118 #ifdef CONFIG_COMPAT
119 static long compat_adpt_ioctl(struct file *, unsigned int, unsigned long);
120 #endif
121 
122 static const struct file_operations adpt_fops = {
123         .unlocked_ioctl = adpt_unlocked_ioctl,
124         .open           = adpt_open,
125         .release        = adpt_close,
126 #ifdef CONFIG_COMPAT
127         .compat_ioctl   = compat_adpt_ioctl,
128 #endif
129         .llseek         = noop_llseek,
130 };
131 
132 /* Structures and definitions for synchronous message posting.
133  * See adpt_i2o_post_wait() for description
134  * */
135 struct adpt_i2o_post_wait_data
136 {
137         int status;
138         u32 id;
139         adpt_wait_queue_head_t *wq;
140         struct adpt_i2o_post_wait_data *next;
141 };
142 
143 static struct adpt_i2o_post_wait_data *adpt_post_wait_queue = NULL;
144 static u32 adpt_post_wait_id = 0;
145 static DEFINE_SPINLOCK(adpt_post_wait_lock);
146 
147 
148 /*============================================================================
149  *                              Functions
150  *============================================================================
151  */
152 
153 static inline int dpt_dma64(adpt_hba *pHba)
154 {
155         return (sizeof(dma_addr_t) > 4 && (pHba)->dma64);
156 }
157 
158 static inline u32 dma_high(dma_addr_t addr)
159 {
160         return upper_32_bits(addr);
161 }
162 
163 static inline u32 dma_low(dma_addr_t addr)
164 {
165         return (u32)addr;
166 }
167 
168 static u8 adpt_read_blink_led(adpt_hba* host)
169 {
170         if (host->FwDebugBLEDflag_P) {
171                 if( readb(host->FwDebugBLEDflag_P) == 0xbc ){
172                         return readb(host->FwDebugBLEDvalue_P);
173                 }
174         }
175         return 0;
176 }
177 
178 /*============================================================================
179  * Scsi host template interface functions
180  *============================================================================
181  */
182 
183 static struct pci_device_id dptids[] = {
184         { PCI_DPT_VENDOR_ID, PCI_DPT_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,},
185         { PCI_DPT_VENDOR_ID, PCI_DPT_RAPTOR_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,},
186         { 0, }
187 };
188 MODULE_DEVICE_TABLE(pci,dptids);
189 
190 static int adpt_detect(struct scsi_host_template* sht)
191 {
192         struct pci_dev *pDev = NULL;
193         adpt_hba *pHba;
194         adpt_hba *next;
195 
196         PINFO("Detecting Adaptec I2O RAID controllers...\n");
197 
198         /* search for all Adatpec I2O RAID cards */
199         while ((pDev = pci_get_device( PCI_DPT_VENDOR_ID, PCI_ANY_ID, pDev))) {
200                 if(pDev->device == PCI_DPT_DEVICE_ID ||
201                    pDev->device == PCI_DPT_RAPTOR_DEVICE_ID){
202                         if(adpt_install_hba(sht, pDev) ){
203                                 PERROR("Could not Init an I2O RAID device\n");
204                                 PERROR("Will not try to detect others.\n");
205                                 return hba_count-1;
206                         }
207                         pci_dev_get(pDev);
208                 }
209         }
210 
211         /* In INIT state, Activate IOPs */
212         for (pHba = hba_chain; pHba; pHba = next) {
213                 next = pHba->next;
214                 // Activate does get status , init outbound, and get hrt
215                 if (adpt_i2o_activate_hba(pHba) < 0) {
216                         adpt_i2o_delete_hba(pHba);
217                 }
218         }
219 
220 
221         /* Active IOPs in HOLD state */
222 
223 rebuild_sys_tab:
224         if (hba_chain == NULL) 
225                 return 0;
226 
227         /*
228          * If build_sys_table fails, we kill everything and bail
229          * as we can't init the IOPs w/o a system table
230          */     
231         if (adpt_i2o_build_sys_table() < 0) {
232                 adpt_i2o_sys_shutdown();
233                 return 0;
234         }
235 
236         PDEBUG("HBA's in HOLD state\n");
237 
238         /* If IOP don't get online, we need to rebuild the System table */
239         for (pHba = hba_chain; pHba; pHba = pHba->next) {
240                 if (adpt_i2o_online_hba(pHba) < 0) {
241                         adpt_i2o_delete_hba(pHba);      
242                         goto rebuild_sys_tab;
243                 }
244         }
245 
246         /* Active IOPs now in OPERATIONAL state */
247         PDEBUG("HBA's in OPERATIONAL state\n");
248 
249         printk("dpti: If you have a lot of devices this could take a few minutes.\n");
250         for (pHba = hba_chain; pHba; pHba = next) {
251                 next = pHba->next;
252                 printk(KERN_INFO"%s: Reading the hardware resource table.\n", pHba->name);
253                 if (adpt_i2o_lct_get(pHba) < 0){
254                         adpt_i2o_delete_hba(pHba);
255                         continue;
256                 }
257 
258                 if (adpt_i2o_parse_lct(pHba) < 0){
259                         adpt_i2o_delete_hba(pHba);
260                         continue;
261                 }
262                 adpt_inquiry(pHba);
263         }
264 
265         adpt_sysfs_class = class_create(THIS_MODULE, "dpt_i2o");
266         if (IS_ERR(adpt_sysfs_class)) {
267                 printk(KERN_WARNING"dpti: unable to create dpt_i2o class\n");
268                 adpt_sysfs_class = NULL;
269         }
270 
271         for (pHba = hba_chain; pHba; pHba = next) {
272                 next = pHba->next;
273                 if (adpt_scsi_host_alloc(pHba, sht) < 0){
274                         adpt_i2o_delete_hba(pHba);
275                         continue;
276                 }
277                 pHba->initialized = TRUE;
278                 pHba->state &= ~DPTI_STATE_RESET;
279                 if (adpt_sysfs_class) {
280                         struct device *dev = device_create(adpt_sysfs_class,
281                                 NULL, MKDEV(DPTI_I2O_MAJOR, pHba->unit), NULL,
282                                 "dpti%d", pHba->unit);
283                         if (IS_ERR(dev)) {
284                                 printk(KERN_WARNING"dpti%d: unable to "
285                                         "create device in dpt_i2o class\n",
286                                         pHba->unit);
287                         }
288                 }
289         }
290 
291         // Register our control device node
292         // nodes will need to be created in /dev to access this
293         // the nodes can not be created from within the driver
294         if (hba_count && register_chrdev(DPTI_I2O_MAJOR, DPT_DRIVER, &adpt_fops)) {
295                 adpt_i2o_sys_shutdown();
296                 return 0;
297         }
298         return hba_count;
299 }
300 
301 
302 /*
303  * scsi_unregister will be called AFTER we return.
304  */
305 static int adpt_release(struct Scsi_Host *host)
306 {
307         adpt_hba* pHba = (adpt_hba*) host->hostdata[0];
308 //      adpt_i2o_quiesce_hba(pHba);
309         adpt_i2o_delete_hba(pHba);
310         scsi_unregister(host);
311         return 0;
312 }
313 
314 
315 static void adpt_inquiry(adpt_hba* pHba)
316 {
317         u32 msg[17]; 
318         u32 *mptr;
319         u32 *lenptr;
320         int direction;
321         int scsidir;
322         u32 len;
323         u32 reqlen;
324         u8* buf;
325         dma_addr_t addr;
326         u8  scb[16];
327         s32 rcode;
328 
329         memset(msg, 0, sizeof(msg));
330         buf = dma_alloc_coherent(&pHba->pDev->dev, 80, &addr, GFP_KERNEL);
331         if(!buf){
332                 printk(KERN_ERR"%s: Could not allocate buffer\n",pHba->name);
333                 return;
334         }
335         memset((void*)buf, 0, 36);
336         
337         len = 36;
338         direction = 0x00000000; 
339         scsidir  =0x40000000;   // DATA IN  (iop<--dev)
340 
341         if (dpt_dma64(pHba))
342                 reqlen = 17;            // SINGLE SGE, 64 bit
343         else
344                 reqlen = 14;            // SINGLE SGE, 32 bit
345         /* Stick the headers on */
346         msg[0] = reqlen<<16 | SGL_OFFSET_12;
347         msg[1] = (0xff<<24|HOST_TID<<12|ADAPTER_TID);
348         msg[2] = 0;
349         msg[3]  = 0;
350         // Adaptec/DPT Private stuff 
351         msg[4] = I2O_CMD_SCSI_EXEC|DPT_ORGANIZATION_ID<<16;
352         msg[5] = ADAPTER_TID | 1<<16 /* Interpret*/;
353         /* Direction, disconnect ok | sense data | simple queue , CDBLen */
354         // I2O_SCB_FLAG_ENABLE_DISCONNECT | 
355         // I2O_SCB_FLAG_SIMPLE_QUEUE_TAG | 
356         // I2O_SCB_FLAG_SENSE_DATA_IN_MESSAGE;
357         msg[6] = scsidir|0x20a00000| 6 /* cmd len*/;
358 
359         mptr=msg+7;
360 
361         memset(scb, 0, sizeof(scb));
362         // Write SCSI command into the message - always 16 byte block 
363         scb[0] = INQUIRY;
364         scb[1] = 0;
365         scb[2] = 0;
366         scb[3] = 0;
367         scb[4] = 36;
368         scb[5] = 0;
369         // Don't care about the rest of scb
370 
371         memcpy(mptr, scb, sizeof(scb));
372         mptr+=4;
373         lenptr=mptr++;          /* Remember me - fill in when we know */
374 
375         /* Now fill in the SGList and command */
376         *lenptr = len;
377         if (dpt_dma64(pHba)) {
378                 *mptr++ = (0x7C<<24)+(2<<16)+0x02; /* Enable 64 bit */
379                 *mptr++ = 1 << PAGE_SHIFT;
380                 *mptr++ = 0xD0000000|direction|len;
381                 *mptr++ = dma_low(addr);
382                 *mptr++ = dma_high(addr);
383         } else {
384                 *mptr++ = 0xD0000000|direction|len;
385                 *mptr++ = addr;
386         }
387 
388         // Send it on it's way
389         rcode = adpt_i2o_post_wait(pHba, msg, reqlen<<2, 120);
390         if (rcode != 0) {
391                 sprintf(pHba->detail, "Adaptec I2O RAID");
392                 printk(KERN_INFO "%s: Inquiry Error (%d)\n",pHba->name,rcode);
393                 if (rcode != -ETIME && rcode != -EINTR)
394                         dma_free_coherent(&pHba->pDev->dev, 80, buf, addr);
395         } else {
396                 memset(pHba->detail, 0, sizeof(pHba->detail));
397                 memcpy(&(pHba->detail), "Vendor: Adaptec ", 16);
398                 memcpy(&(pHba->detail[16]), " Model: ", 8);
399                 memcpy(&(pHba->detail[24]), (u8*) &buf[16], 16);
400                 memcpy(&(pHba->detail[40]), " FW: ", 4);
401                 memcpy(&(pHba->detail[44]), (u8*) &buf[32], 4);
402                 pHba->detail[48] = '\0';        /* precautionary */
403                 dma_free_coherent(&pHba->pDev->dev, 80, buf, addr);
404         }
405         adpt_i2o_status_get(pHba);
406         return ;
407 }
408 
409 
410 static int adpt_slave_configure(struct scsi_device * device)
411 {
412         struct Scsi_Host *host = device->host;
413         adpt_hba* pHba;
414 
415         pHba = (adpt_hba *) host->hostdata[0];
416 
417         if (host->can_queue && device->tagged_supported) {
418                 scsi_change_queue_depth(device,
419                                 host->can_queue - 1);
420         }
421         return 0;
422 }
423 
424 static int adpt_queue_lck(struct scsi_cmnd * cmd, void (*done) (struct scsi_cmnd *))
425 {
426         adpt_hba* pHba = NULL;
427         struct adpt_device* pDev = NULL;        /* dpt per device information */
428 
429         cmd->scsi_done = done;
430         /*
431          * SCSI REQUEST_SENSE commands will be executed automatically by the 
432          * Host Adapter for any errors, so they should not be executed 
433          * explicitly unless the Sense Data is zero indicating that no error 
434          * occurred.
435          */
436 
437         if ((cmd->cmnd[0] == REQUEST_SENSE) && (cmd->sense_buffer[0] != 0)) {
438                 cmd->result = (DID_OK << 16);
439                 cmd->scsi_done(cmd);
440                 return 0;
441         }
442 
443         pHba = (adpt_hba*)cmd->device->host->hostdata[0];
444         if (!pHba) {
445                 return FAILED;
446         }
447 
448         rmb();
449         if ((pHba->state) & DPTI_STATE_RESET)
450                 return SCSI_MLQUEUE_HOST_BUSY;
451 
452         // TODO if the cmd->device if offline then I may need to issue a bus rescan
453         // followed by a get_lct to see if the device is there anymore
454         if((pDev = (struct adpt_device*) (cmd->device->hostdata)) == NULL) {
455                 /*
456                  * First command request for this device.  Set up a pointer
457                  * to the device structure.  This should be a TEST_UNIT_READY
458                  * command from scan_scsis_single.
459                  */
460                 if ((pDev = adpt_find_device(pHba, (u32)cmd->device->channel, (u32)cmd->device->id, cmd->device->lun)) == NULL) {
461                         // TODO: if any luns are at this bus, scsi id then fake a TEST_UNIT_READY and INQUIRY response 
462                         // with type 7F (for all luns less than the max for this bus,id) so the lun scan will continue.
463                         cmd->result = (DID_NO_CONNECT << 16);
464                         cmd->scsi_done(cmd);
465                         return 0;
466                 }
467                 cmd->device->hostdata = pDev;
468         }
469         pDev->pScsi_dev = cmd->device;
470 
471         /*
472          * If we are being called from when the device is being reset, 
473          * delay processing of the command until later.
474          */
475         if (pDev->state & DPTI_DEV_RESET ) {
476                 return FAILED;
477         }
478         return adpt_scsi_to_i2o(pHba, cmd, pDev);
479 }
480 
481 static DEF_SCSI_QCMD(adpt_queue)
482 
483 static int adpt_bios_param(struct scsi_device *sdev, struct block_device *dev,
484                 sector_t capacity, int geom[])
485 {
486         int heads=-1;
487         int sectors=-1;
488         int cylinders=-1;
489 
490         // *** First lets set the default geometry ****
491         
492         // If the capacity is less than ox2000
493         if (capacity < 0x2000 ) {       // floppy
494                 heads = 18;
495                 sectors = 2;
496         } 
497         // else if between 0x2000 and 0x20000
498         else if (capacity < 0x20000) {
499                 heads = 64;
500                 sectors = 32;
501         }
502         // else if between 0x20000 and 0x40000
503         else if (capacity < 0x40000) {
504                 heads = 65;
505                 sectors = 63;
506         }
507         // else if between 0x4000 and 0x80000
508         else if (capacity < 0x80000) {
509                 heads = 128;
510                 sectors = 63;
511         }
512         // else if greater than 0x80000
513         else {
514                 heads = 255;
515                 sectors = 63;
516         }
517         cylinders = sector_div(capacity, heads * sectors);
518 
519         // Special case if CDROM
520         if(sdev->type == 5) {  // CDROM
521                 heads = 252;
522                 sectors = 63;
523                 cylinders = 1111;
524         }
525 
526         geom[0] = heads;
527         geom[1] = sectors;
528         geom[2] = cylinders;
529         
530         PDEBUG("adpt_bios_param: exit\n");
531         return 0;
532 }
533 
534 
535 static const char *adpt_info(struct Scsi_Host *host)
536 {
537         adpt_hba* pHba;
538 
539         pHba = (adpt_hba *) host->hostdata[0];
540         return (char *) (pHba->detail);
541 }
542 
543 static int adpt_show_info(struct seq_file *m, struct Scsi_Host *host)
544 {
545         struct adpt_device* d;
546         int id;
547         int chan;
548         adpt_hba* pHba;
549         int unit;
550 
551         // Find HBA (host bus adapter) we are looking for
552         mutex_lock(&adpt_configuration_lock);
553         for (pHba = hba_chain; pHba; pHba = pHba->next) {
554                 if (pHba->host == host) {
555                         break;  /* found adapter */
556                 }
557         }
558         mutex_unlock(&adpt_configuration_lock);
559         if (pHba == NULL) {
560                 return 0;
561         }
562         host = pHba->host;
563 
564         seq_printf(m, "Adaptec I2O RAID Driver Version: %s\n\n", DPT_I2O_VERSION);
565         seq_printf(m, "%s\n", pHba->detail);
566         seq_printf(m, "SCSI Host=scsi%d  Control Node=/dev/%s  irq=%d\n", 
567                         pHba->host->host_no, pHba->name, host->irq);
568         seq_printf(m, "\tpost fifo size  = %d\n\treply fifo size = %d\n\tsg table size   = %d\n\n",
569                         host->can_queue, (int) pHba->reply_fifo_size , host->sg_tablesize);
570 
571         seq_puts(m, "Devices:\n");
572         for(chan = 0; chan < MAX_CHANNEL; chan++) {
573                 for(id = 0; id < MAX_ID; id++) {
574                         d = pHba->channel[chan].device[id];
575                         while(d) {
576                                 seq_printf(m,"\t%-24.24s", d->pScsi_dev->vendor);
577                                 seq_printf(m," Rev: %-8.8s\n", d->pScsi_dev->rev);
578 
579                                 unit = d->pI2o_dev->lct_data.tid;
580                                 seq_printf(m, "\tTID=%d, (Channel=%d, Target=%d, Lun=%llu)  (%s)\n\n",
581                                                unit, (int)d->scsi_channel, (int)d->scsi_id, d->scsi_lun,
582                                                scsi_device_online(d->pScsi_dev)? "online":"offline"); 
583                                 d = d->next_lun;
584                         }
585                 }
586         }
587         return 0;
588 }
589 
590 /*
591  *      Turn a struct scsi_cmnd * into a unique 32 bit 'context'.
592  */
593 static u32 adpt_cmd_to_context(struct scsi_cmnd *cmd)
594 {
595         return (u32)cmd->serial_number;
596 }
597 
598 /*
599  *      Go from a u32 'context' to a struct scsi_cmnd * .
600  *      This could probably be made more efficient.
601  */
602 static struct scsi_cmnd *
603         adpt_cmd_from_context(adpt_hba * pHba, u32 context)
604 {
605         struct scsi_cmnd * cmd;
606         struct scsi_device * d;
607 
608         if (context == 0)
609                 return NULL;
610 
611         spin_unlock(pHba->host->host_lock);
612         shost_for_each_device(d, pHba->host) {
613                 unsigned long flags;
614                 spin_lock_irqsave(&d->list_lock, flags);
615                 list_for_each_entry(cmd, &d->cmd_list, list) {
616                         if (((u32)cmd->serial_number == context)) {
617                                 spin_unlock_irqrestore(&d->list_lock, flags);
618                                 scsi_device_put(d);
619                                 spin_lock(pHba->host->host_lock);
620                                 return cmd;
621                         }
622                 }
623                 spin_unlock_irqrestore(&d->list_lock, flags);
624         }
625         spin_lock(pHba->host->host_lock);
626 
627         return NULL;
628 }
629 
630 /*
631  *      Turn a pointer to ioctl reply data into an u32 'context'
632  */
633 static u32 adpt_ioctl_to_context(adpt_hba * pHba, void *reply)
634 {
635 #if BITS_PER_LONG == 32
636         return (u32)(unsigned long)reply;
637 #else
638         ulong flags = 0;
639         u32 nr, i;
640 
641         spin_lock_irqsave(pHba->host->host_lock, flags);
642         nr = ARRAY_SIZE(pHba->ioctl_reply_context);
643         for (i = 0; i < nr; i++) {
644                 if (pHba->ioctl_reply_context[i] == NULL) {
645                         pHba->ioctl_reply_context[i] = reply;
646                         break;
647                 }
648         }
649         spin_unlock_irqrestore(pHba->host->host_lock, flags);
650         if (i >= nr) {
651                 kfree (reply);
652                 printk(KERN_WARNING"%s: Too many outstanding "
653                                 "ioctl commands\n", pHba->name);
654                 return (u32)-1;
655         }
656 
657         return i;
658 #endif
659 }
660 
661 /*
662  *      Go from an u32 'context' to a pointer to ioctl reply data.
663  */
664 static void *adpt_ioctl_from_context(adpt_hba *pHba, u32 context)
665 {
666 #if BITS_PER_LONG == 32
667         return (void *)(unsigned long)context;
668 #else
669         void *p = pHba->ioctl_reply_context[context];
670         pHba->ioctl_reply_context[context] = NULL;
671 
672         return p;
673 #endif
674 }
675 
676 /*===========================================================================
677  * Error Handling routines
678  *===========================================================================
679  */
680 
681 static int adpt_abort(struct scsi_cmnd * cmd)
682 {
683         adpt_hba* pHba = NULL;  /* host bus adapter structure */
684         struct adpt_device* dptdevice;  /* dpt per device information */
685         u32 msg[5];
686         int rcode;
687 
688         if(cmd->serial_number == 0){
689                 return FAILED;
690         }
691         pHba = (adpt_hba*) cmd->device->host->hostdata[0];
692         printk(KERN_INFO"%s: Trying to Abort\n",pHba->name);
693         if ((dptdevice = (void*) (cmd->device->hostdata)) == NULL) {
694                 printk(KERN_ERR "%s: Unable to abort: No device in cmnd\n",pHba->name);
695                 return FAILED;
696         }
697 
698         memset(msg, 0, sizeof(msg));
699         msg[0] = FIVE_WORD_MSG_SIZE|SGL_OFFSET_0;
700         msg[1] = I2O_CMD_SCSI_ABORT<<24|HOST_TID<<12|dptdevice->tid;
701         msg[2] = 0;
702         msg[3]= 0; 
703         msg[4] = adpt_cmd_to_context(cmd);
704         if (pHba->host)
705                 spin_lock_irq(pHba->host->host_lock);
706         rcode = adpt_i2o_post_wait(pHba, msg, sizeof(msg), FOREVER);
707         if (pHba->host)
708                 spin_unlock_irq(pHba->host->host_lock);
709         if (rcode != 0) {
710                 if(rcode == -EOPNOTSUPP ){
711                         printk(KERN_INFO"%s: Abort cmd not supported\n",pHba->name);
712                         return FAILED;
713                 }
714                 printk(KERN_INFO"%s: Abort failed.\n",pHba->name);
715                 return FAILED;
716         } 
717         printk(KERN_INFO"%s: Abort complete.\n",pHba->name);
718         return SUCCESS;
719 }
720 
721 
722 #define I2O_DEVICE_RESET 0x27
723 // This is the same for BLK and SCSI devices
724 // NOTE this is wrong in the i2o.h definitions
725 // This is not currently supported by our adapter but we issue it anyway
726 static int adpt_device_reset(struct scsi_cmnd* cmd)
727 {
728         adpt_hba* pHba;
729         u32 msg[4];
730         u32 rcode;
731         int old_state;
732         struct adpt_device* d = cmd->device->hostdata;
733 
734         pHba = (void*) cmd->device->host->hostdata[0];
735         printk(KERN_INFO"%s: Trying to reset device\n",pHba->name);
736         if (!d) {
737                 printk(KERN_INFO"%s: Reset Device: Device Not found\n",pHba->name);
738                 return FAILED;
739         }
740         memset(msg, 0, sizeof(msg));
741         msg[0] = FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
742         msg[1] = (I2O_DEVICE_RESET<<24|HOST_TID<<12|d->tid);
743         msg[2] = 0;
744         msg[3] = 0;
745 
746         if (pHba->host)
747                 spin_lock_irq(pHba->host->host_lock);
748         old_state = d->state;
749         d->state |= DPTI_DEV_RESET;
750         rcode = adpt_i2o_post_wait(pHba, msg,sizeof(msg), FOREVER);
751         d->state = old_state;
752         if (pHba->host)
753                 spin_unlock_irq(pHba->host->host_lock);
754         if (rcode != 0) {
755                 if(rcode == -EOPNOTSUPP ){
756                         printk(KERN_INFO"%s: Device reset not supported\n",pHba->name);
757                         return FAILED;
758                 }
759                 printk(KERN_INFO"%s: Device reset failed\n",pHba->name);
760                 return FAILED;
761         } else {
762                 printk(KERN_INFO"%s: Device reset successful\n",pHba->name);
763                 return SUCCESS;
764         }
765 }
766 
767 
768 #define I2O_HBA_BUS_RESET 0x87
769 // This version of bus reset is called by the eh_error handler
770 static int adpt_bus_reset(struct scsi_cmnd* cmd)
771 {
772         adpt_hba* pHba;
773         u32 msg[4];
774         u32 rcode;
775 
776         pHba = (adpt_hba*)cmd->device->host->hostdata[0];
777         memset(msg, 0, sizeof(msg));
778         printk(KERN_WARNING"%s: Bus reset: SCSI Bus %d: tid: %d\n",pHba->name, cmd->device->channel,pHba->channel[cmd->device->channel].tid );
779         msg[0] = FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
780         msg[1] = (I2O_HBA_BUS_RESET<<24|HOST_TID<<12|pHba->channel[cmd->device->channel].tid);
781         msg[2] = 0;
782         msg[3] = 0;
783         if (pHba->host)
784                 spin_lock_irq(pHba->host->host_lock);
785         rcode = adpt_i2o_post_wait(pHba, msg,sizeof(msg), FOREVER);
786         if (pHba->host)
787                 spin_unlock_irq(pHba->host->host_lock);
788         if (rcode != 0) {
789                 printk(KERN_WARNING"%s: Bus reset failed.\n",pHba->name);
790                 return FAILED;
791         } else {
792                 printk(KERN_WARNING"%s: Bus reset success.\n",pHba->name);
793                 return SUCCESS;
794         }
795 }
796 
797 // This version of reset is called by the eh_error_handler
798 static int __adpt_reset(struct scsi_cmnd* cmd)
799 {
800         adpt_hba* pHba;
801         int rcode;
802         pHba = (adpt_hba*)cmd->device->host->hostdata[0];
803         printk(KERN_WARNING"%s: Hba Reset: scsi id %d: tid: %d\n",pHba->name,cmd->device->channel,pHba->channel[cmd->device->channel].tid );
804         rcode =  adpt_hba_reset(pHba);
805         if(rcode == 0){
806                 printk(KERN_WARNING"%s: HBA reset complete\n",pHba->name);
807                 return SUCCESS;
808         } else {
809                 printk(KERN_WARNING"%s: HBA reset failed (%x)\n",pHba->name, rcode);
810                 return FAILED;
811         }
812 }
813 
814 static int adpt_reset(struct scsi_cmnd* cmd)
815 {
816         int rc;
817 
818         spin_lock_irq(cmd->device->host->host_lock);
819         rc = __adpt_reset(cmd);
820         spin_unlock_irq(cmd->device->host->host_lock);
821 
822         return rc;
823 }
824 
825 // This version of reset is called by the ioctls and indirectly from eh_error_handler via adpt_reset
826 static int adpt_hba_reset(adpt_hba* pHba)
827 {
828         int rcode;
829 
830         pHba->state |= DPTI_STATE_RESET;
831 
832         // Activate does get status , init outbound, and get hrt
833         if ((rcode=adpt_i2o_activate_hba(pHba)) < 0) {
834                 printk(KERN_ERR "%s: Could not activate\n", pHba->name);
835                 adpt_i2o_delete_hba(pHba);
836                 return rcode;
837         }
838 
839         if ((rcode=adpt_i2o_build_sys_table()) < 0) {
840                 adpt_i2o_delete_hba(pHba);
841                 return rcode;
842         }
843         PDEBUG("%s: in HOLD state\n",pHba->name);
844 
845         if ((rcode=adpt_i2o_online_hba(pHba)) < 0) {
846                 adpt_i2o_delete_hba(pHba);      
847                 return rcode;
848         }
849         PDEBUG("%s: in OPERATIONAL state\n",pHba->name);
850 
851         if ((rcode=adpt_i2o_lct_get(pHba)) < 0){
852                 adpt_i2o_delete_hba(pHba);
853                 return rcode;
854         }
855 
856         if ((rcode=adpt_i2o_reparse_lct(pHba)) < 0){
857                 adpt_i2o_delete_hba(pHba);
858                 return rcode;
859         }
860         pHba->state &= ~DPTI_STATE_RESET;
861 
862         adpt_fail_posted_scbs(pHba);
863         return 0;       /* return success */
864 }
865 
866 /*===========================================================================
867  * 
868  *===========================================================================
869  */
870 
871 
872 static void adpt_i2o_sys_shutdown(void)
873 {
874         adpt_hba *pHba, *pNext;
875         struct adpt_i2o_post_wait_data *p1, *old;
876 
877          printk(KERN_INFO"Shutting down Adaptec I2O controllers.\n");
878          printk(KERN_INFO"   This could take a few minutes if there are many devices attached\n");
879         /* Delete all IOPs from the controller chain */
880         /* They should have already been released by the
881          * scsi-core
882          */
883         for (pHba = hba_chain; pHba; pHba = pNext) {
884                 pNext = pHba->next;
885                 adpt_i2o_delete_hba(pHba);
886         }
887 
888         /* Remove any timedout entries from the wait queue.  */
889 //      spin_lock_irqsave(&adpt_post_wait_lock, flags);
890         /* Nothing should be outstanding at this point so just
891          * free them 
892          */
893         for(p1 = adpt_post_wait_queue; p1;) {
894                 old = p1;
895                 p1 = p1->next;
896                 kfree(old);
897         }
898 //      spin_unlock_irqrestore(&adpt_post_wait_lock, flags);
899         adpt_post_wait_queue = NULL;
900 
901          printk(KERN_INFO "Adaptec I2O controllers down.\n");
902 }
903 
904 static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev)
905 {
906 
907         adpt_hba* pHba = NULL;
908         adpt_hba* p = NULL;
909         ulong base_addr0_phys = 0;
910         ulong base_addr1_phys = 0;
911         u32 hba_map0_area_size = 0;
912         u32 hba_map1_area_size = 0;
913         void __iomem *base_addr_virt = NULL;
914         void __iomem *msg_addr_virt = NULL;
915         int dma64 = 0;
916 
917         int raptorFlag = FALSE;
918 
919         if(pci_enable_device(pDev)) {
920                 return -EINVAL;
921         }
922 
923         if (pci_request_regions(pDev, "dpt_i2o")) {
924                 PERROR("dpti: adpt_config_hba: pci request region failed\n");
925                 return -EINVAL;
926         }
927 
928         pci_set_master(pDev);
929 
930         /*
931          *      See if we should enable dma64 mode.
932          */
933         if (sizeof(dma_addr_t) > 4 &&
934             pci_set_dma_mask(pDev, DMA_BIT_MASK(64)) == 0) {
935                 if (dma_get_required_mask(&pDev->dev) > DMA_BIT_MASK(32))
936                         dma64 = 1;
937         }
938         if (!dma64 && pci_set_dma_mask(pDev, DMA_BIT_MASK(32)) != 0)
939                 return -EINVAL;
940 
941         /* adapter only supports message blocks below 4GB */
942         pci_set_consistent_dma_mask(pDev, DMA_BIT_MASK(32));
943 
944         base_addr0_phys = pci_resource_start(pDev,0);
945         hba_map0_area_size = pci_resource_len(pDev,0);
946 
947         // Check if standard PCI card or single BAR Raptor
948         if(pDev->device == PCI_DPT_DEVICE_ID){
949                 if(pDev->subsystem_device >=0xc032 && pDev->subsystem_device <= 0xc03b){
950                         // Raptor card with this device id needs 4M
951                         hba_map0_area_size = 0x400000;
952                 } else { // Not Raptor - it is a PCI card
953                         if(hba_map0_area_size > 0x100000 ){ 
954                                 hba_map0_area_size = 0x100000;
955                         }
956                 }
957         } else {// Raptor split BAR config
958                 // Use BAR1 in this configuration
959                 base_addr1_phys = pci_resource_start(pDev,1);
960                 hba_map1_area_size = pci_resource_len(pDev,1);
961                 raptorFlag = TRUE;
962         }
963 
964 #if BITS_PER_LONG == 64
965         /*
966          *      The original Adaptec 64 bit driver has this comment here:
967          *      "x86_64 machines need more optimal mappings"
968          *
969          *      I assume some HBAs report ridiculously large mappings
970          *      and we need to limit them on platforms with IOMMUs.
971          */
972         if (raptorFlag == TRUE) {
973                 if (hba_map0_area_size > 128)
974                         hba_map0_area_size = 128;
975                 if (hba_map1_area_size > 524288)
976                         hba_map1_area_size = 524288;
977         } else {
978                 if (hba_map0_area_size > 524288)
979                         hba_map0_area_size = 524288;
980         }
981 #endif
982 
983         base_addr_virt = ioremap(base_addr0_phys,hba_map0_area_size);
984         if (!base_addr_virt) {
985                 pci_release_regions(pDev);
986                 PERROR("dpti: adpt_config_hba: io remap failed\n");
987                 return -EINVAL;
988         }
989 
990         if(raptorFlag == TRUE) {
991                 msg_addr_virt = ioremap(base_addr1_phys, hba_map1_area_size );
992                 if (!msg_addr_virt) {
993                         PERROR("dpti: adpt_config_hba: io remap failed on BAR1\n");
994                         iounmap(base_addr_virt);
995                         pci_release_regions(pDev);
996                         return -EINVAL;
997                 }
998         } else {
999                 msg_addr_virt = base_addr_virt;
1000         }
1001         
1002         // Allocate and zero the data structure
1003         pHba = kzalloc(sizeof(adpt_hba), GFP_KERNEL);
1004         if (!pHba) {
1005                 if (msg_addr_virt != base_addr_virt)
1006                         iounmap(msg_addr_virt);
1007                 iounmap(base_addr_virt);
1008                 pci_release_regions(pDev);
1009                 return -ENOMEM;
1010         }
1011 
1012         mutex_lock(&adpt_configuration_lock);
1013 
1014         if(hba_chain != NULL){
1015                 for(p = hba_chain; p->next; p = p->next);
1016                 p->next = pHba;
1017         } else {
1018                 hba_chain = pHba;
1019         }
1020         pHba->next = NULL;
1021         pHba->unit = hba_count;
1022         sprintf(pHba->name, "dpti%d", hba_count);
1023         hba_count++;
1024         
1025         mutex_unlock(&adpt_configuration_lock);
1026 
1027         pHba->pDev = pDev;
1028         pHba->base_addr_phys = base_addr0_phys;
1029 
1030         // Set up the Virtual Base Address of the I2O Device
1031         pHba->base_addr_virt = base_addr_virt;
1032         pHba->msg_addr_virt = msg_addr_virt;
1033         pHba->irq_mask = base_addr_virt+0x30;
1034         pHba->post_port = base_addr_virt+0x40;
1035         pHba->reply_port = base_addr_virt+0x44;
1036 
1037         pHba->hrt = NULL;
1038         pHba->lct = NULL;
1039         pHba->lct_size = 0;
1040         pHba->status_block = NULL;
1041         pHba->post_count = 0;
1042         pHba->state = DPTI_STATE_RESET;
1043         pHba->pDev = pDev;
1044         pHba->devices = NULL;
1045         pHba->dma64 = dma64;
1046 
1047         // Initializing the spinlocks
1048         spin_lock_init(&pHba->state_lock);
1049         spin_lock_init(&adpt_post_wait_lock);
1050 
1051         if(raptorFlag == 0){
1052                 printk(KERN_INFO "Adaptec I2O RAID controller"
1053                                  " %d at %p size=%x irq=%d%s\n", 
1054                         hba_count-1, base_addr_virt,
1055                         hba_map0_area_size, pDev->irq,
1056                         dma64 ? " (64-bit DMA)" : "");
1057         } else {
1058                 printk(KERN_INFO"Adaptec I2O RAID controller %d irq=%d%s\n",
1059                         hba_count-1, pDev->irq,
1060                         dma64 ? " (64-bit DMA)" : "");
1061                 printk(KERN_INFO"     BAR0 %p - size= %x\n",base_addr_virt,hba_map0_area_size);
1062                 printk(KERN_INFO"     BAR1 %p - size= %x\n",msg_addr_virt,hba_map1_area_size);
1063         }
1064 
1065         if (request_irq (pDev->irq, adpt_isr, IRQF_SHARED, pHba->name, pHba)) {
1066                 printk(KERN_ERR"%s: Couldn't register IRQ %d\n", pHba->name, pDev->irq);
1067                 adpt_i2o_delete_hba(pHba);
1068                 return -EINVAL;
1069         }
1070 
1071         return 0;
1072 }
1073 
1074 
1075 static void adpt_i2o_delete_hba(adpt_hba* pHba)
1076 {
1077         adpt_hba* p1;
1078         adpt_hba* p2;
1079         struct i2o_device* d;
1080         struct i2o_device* next;
1081         int i;
1082         int j;
1083         struct adpt_device* pDev;
1084         struct adpt_device* pNext;
1085 
1086 
1087         mutex_lock(&adpt_configuration_lock);
1088         // scsi_unregister calls our adpt_release which
1089         // does a quiese
1090         if(pHba->host){
1091                 free_irq(pHba->host->irq, pHba);
1092         }
1093         p2 = NULL;
1094         for( p1 = hba_chain; p1; p2 = p1,p1=p1->next){
1095                 if(p1 == pHba) {
1096                         if(p2) {
1097                                 p2->next = p1->next;
1098                         } else {
1099                                 hba_chain = p1->next;
1100                         }
1101                         break;
1102                 }
1103         }
1104 
1105         hba_count--;
1106         mutex_unlock(&adpt_configuration_lock);
1107 
1108         iounmap(pHba->base_addr_virt);
1109         pci_release_regions(pHba->pDev);
1110         if(pHba->msg_addr_virt != pHba->base_addr_virt){
1111                 iounmap(pHba->msg_addr_virt);
1112         }
1113         if(pHba->FwDebugBuffer_P)
1114                 iounmap(pHba->FwDebugBuffer_P);
1115         if(pHba->hrt) {
1116                 dma_free_coherent(&pHba->pDev->dev,
1117                         pHba->hrt->num_entries * pHba->hrt->entry_len << 2,
1118                         pHba->hrt, pHba->hrt_pa);
1119         }
1120         if(pHba->lct) {
1121                 dma_free_coherent(&pHba->pDev->dev, pHba->lct_size,
1122                         pHba->lct, pHba->lct_pa);
1123         }
1124         if(pHba->status_block) {
1125                 dma_free_coherent(&pHba->pDev->dev, sizeof(i2o_status_block),
1126                         pHba->status_block, pHba->status_block_pa);
1127         }
1128         if(pHba->reply_pool) {
1129                 dma_free_coherent(&pHba->pDev->dev,
1130                         pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
1131                         pHba->reply_pool, pHba->reply_pool_pa);
1132         }
1133 
1134         for(d = pHba->devices; d ; d = next){
1135                 next = d->next;
1136                 kfree(d);
1137         }
1138         for(i = 0 ; i < pHba->top_scsi_channel ; i++){
1139                 for(j = 0; j < MAX_ID; j++){
1140                         if(pHba->channel[i].device[j] != NULL){
1141                                 for(pDev = pHba->channel[i].device[j]; pDev; pDev = pNext){
1142                                         pNext = pDev->next_lun;
1143                                         kfree(pDev);
1144                                 }
1145                         }
1146                 }
1147         }
1148         pci_dev_put(pHba->pDev);
1149         if (adpt_sysfs_class)
1150                 device_destroy(adpt_sysfs_class,
1151                                 MKDEV(DPTI_I2O_MAJOR, pHba->unit));
1152         kfree(pHba);
1153 
1154         if(hba_count <= 0){
1155                 unregister_chrdev(DPTI_I2O_MAJOR, DPT_DRIVER);   
1156                 if (adpt_sysfs_class) {
1157                         class_destroy(adpt_sysfs_class);
1158                         adpt_sysfs_class = NULL;
1159                 }
1160         }
1161 }
1162 
1163 static struct adpt_device* adpt_find_device(adpt_hba* pHba, u32 chan, u32 id, u64 lun)
1164 {
1165         struct adpt_device* d;
1166 
1167         if(chan < 0 || chan >= MAX_CHANNEL)
1168                 return NULL;
1169         
1170         if( pHba->channel[chan].device == NULL){
1171                 printk(KERN_DEBUG"Adaptec I2O RAID: Trying to find device before they are allocated\n");
1172                 return NULL;
1173         }
1174 
1175         d = pHba->channel[chan].device[id];
1176         if(!d || d->tid == 0) {
1177                 return NULL;
1178         }
1179 
1180         /* If it is the only lun at that address then this should match*/
1181         if(d->scsi_lun == lun){
1182                 return d;
1183         }
1184 
1185         /* else we need to look through all the luns */
1186         for(d=d->next_lun ; d ; d = d->next_lun){
1187                 if(d->scsi_lun == lun){
1188                         return d;
1189                 }
1190         }
1191         return NULL;
1192 }
1193 
1194 
1195 static int adpt_i2o_post_wait(adpt_hba* pHba, u32* msg, int len, int timeout)
1196 {
1197         // I used my own version of the WAIT_QUEUE_HEAD
1198         // to handle some version differences
1199         // When embedded in the kernel this could go back to the vanilla one
1200         ADPT_DECLARE_WAIT_QUEUE_HEAD(adpt_wq_i2o_post);
1201         int status = 0;
1202         ulong flags = 0;
1203         struct adpt_i2o_post_wait_data *p1, *p2;
1204         struct adpt_i2o_post_wait_data *wait_data =
1205                 kmalloc(sizeof(struct adpt_i2o_post_wait_data), GFP_ATOMIC);
1206         DECLARE_WAITQUEUE(wait, current);
1207 
1208         if (!wait_data)
1209                 return -ENOMEM;
1210 
1211         /*
1212          * The spin locking is needed to keep anyone from playing
1213          * with the queue pointers and id while we do the same
1214          */
1215         spin_lock_irqsave(&adpt_post_wait_lock, flags);
1216        // TODO we need a MORE unique way of getting ids
1217        // to support async LCT get
1218         wait_data->next = adpt_post_wait_queue;
1219         adpt_post_wait_queue = wait_data;
1220         adpt_post_wait_id++;
1221         adpt_post_wait_id &= 0x7fff;
1222         wait_data->id =  adpt_post_wait_id;
1223         spin_unlock_irqrestore(&adpt_post_wait_lock, flags);
1224 
1225         wait_data->wq = &adpt_wq_i2o_post;
1226         wait_data->status = -ETIMEDOUT;
1227 
1228         add_wait_queue(&adpt_wq_i2o_post, &wait);
1229 
1230         msg[2] |= 0x80000000 | ((u32)wait_data->id);
1231         timeout *= HZ;
1232         if((status = adpt_i2o_post_this(pHba, msg, len)) == 0){
1233                 set_current_state(TASK_INTERRUPTIBLE);
1234                 if(pHba->host)
1235                         spin_unlock_irq(pHba->host->host_lock);
1236                 if (!timeout)
1237                         schedule();
1238                 else{
1239                         timeout = schedule_timeout(timeout);
1240                         if (timeout == 0) {
1241                                 // I/O issued, but cannot get result in
1242                                 // specified time. Freeing resorces is
1243                                 // dangerous.
1244                                 status = -ETIME;
1245                         }
1246                 }
1247                 if(pHba->host)
1248                         spin_lock_irq(pHba->host->host_lock);
1249         }
1250         remove_wait_queue(&adpt_wq_i2o_post, &wait);
1251 
1252         if(status == -ETIMEDOUT){
1253                 printk(KERN_INFO"dpti%d: POST WAIT TIMEOUT\n",pHba->unit);
1254                 // We will have to free the wait_data memory during shutdown
1255                 return status;
1256         }
1257 
1258         /* Remove the entry from the queue.  */
1259         p2 = NULL;
1260         spin_lock_irqsave(&adpt_post_wait_lock, flags);
1261         for(p1 = adpt_post_wait_queue; p1; p2 = p1, p1 = p1->next) {
1262                 if(p1 == wait_data) {
1263                         if(p1->status == I2O_DETAIL_STATUS_UNSUPPORTED_FUNCTION ) {
1264                                 status = -EOPNOTSUPP;
1265                         }
1266                         if(p2) {
1267                                 p2->next = p1->next;
1268                         } else {
1269                                 adpt_post_wait_queue = p1->next;
1270                         }
1271                         break;
1272                 }
1273         }
1274         spin_unlock_irqrestore(&adpt_post_wait_lock, flags);
1275 
1276         kfree(wait_data);
1277 
1278         return status;
1279 }
1280 
1281 
1282 static s32 adpt_i2o_post_this(adpt_hba* pHba, u32* data, int len)
1283 {
1284 
1285         u32 m = EMPTY_QUEUE;
1286         u32 __iomem *msg;
1287         ulong timeout = jiffies + 30*HZ;
1288         do {
1289                 rmb();
1290                 m = readl(pHba->post_port);
1291                 if (m != EMPTY_QUEUE) {
1292                         break;
1293                 }
1294                 if(time_after(jiffies,timeout)){
1295                         printk(KERN_WARNING"dpti%d: Timeout waiting for message frame!\n", pHba->unit);
1296                         return -ETIMEDOUT;
1297                 }
1298                 schedule_timeout_uninterruptible(1);
1299         } while(m == EMPTY_QUEUE);
1300                 
1301         msg = pHba->msg_addr_virt + m;
1302         memcpy_toio(msg, data, len);
1303         wmb();
1304 
1305         //post message
1306         writel(m, pHba->post_port);
1307         wmb();
1308 
1309         return 0;
1310 }
1311 
1312 
1313 static void adpt_i2o_post_wait_complete(u32 context, int status)
1314 {
1315         struct adpt_i2o_post_wait_data *p1 = NULL;
1316         /*
1317          * We need to search through the adpt_post_wait
1318          * queue to see if the given message is still
1319          * outstanding.  If not, it means that the IOP
1320          * took longer to respond to the message than we
1321          * had allowed and timer has already expired.
1322          * Not much we can do about that except log
1323          * it for debug purposes, increase timeout, and recompile
1324          *
1325          * Lock needed to keep anyone from moving queue pointers
1326          * around while we're looking through them.
1327          */
1328 
1329         context &= 0x7fff;
1330 
1331         spin_lock(&adpt_post_wait_lock);
1332         for(p1 = adpt_post_wait_queue; p1; p1 = p1->next) {
1333                 if(p1->id == context) {
1334                         p1->status = status;
1335                         spin_unlock(&adpt_post_wait_lock);
1336                         wake_up_interruptible(p1->wq);
1337                         return;
1338                 }
1339         }
1340         spin_unlock(&adpt_post_wait_lock);
1341         // If this happens we lose commands that probably really completed
1342         printk(KERN_DEBUG"dpti: Could Not find task %d in wait queue\n",context);
1343         printk(KERN_DEBUG"      Tasks in wait queue:\n");
1344         for(p1 = adpt_post_wait_queue; p1; p1 = p1->next) {
1345                 printk(KERN_DEBUG"           %d\n",p1->id);
1346         }
1347         return;
1348 }
1349 
1350 static s32 adpt_i2o_reset_hba(adpt_hba* pHba)                   
1351 {
1352         u32 msg[8];
1353         u8* status;
1354         dma_addr_t addr;
1355         u32 m = EMPTY_QUEUE ;
1356         ulong timeout = jiffies + (TMOUT_IOPRESET*HZ);
1357 
1358         if(pHba->initialized  == FALSE) {       // First time reset should be quick
1359                 timeout = jiffies + (25*HZ);
1360         } else {
1361                 adpt_i2o_quiesce_hba(pHba);
1362         }
1363 
1364         do {
1365                 rmb();
1366                 m = readl(pHba->post_port);
1367                 if (m != EMPTY_QUEUE) {
1368                         break;
1369                 }
1370                 if(time_after(jiffies,timeout)){
1371                         printk(KERN_WARNING"Timeout waiting for message!\n");
1372                         return -ETIMEDOUT;
1373                 }
1374                 schedule_timeout_uninterruptible(1);
1375         } while (m == EMPTY_QUEUE);
1376 
1377         status = dma_alloc_coherent(&pHba->pDev->dev, 4, &addr, GFP_KERNEL);
1378         if(status == NULL) {
1379                 adpt_send_nop(pHba, m);
1380                 printk(KERN_ERR"IOP reset failed - no free memory.\n");
1381                 return -ENOMEM;
1382         }
1383         memset(status,0,4);
1384 
1385         msg[0]=EIGHT_WORD_MSG_SIZE|SGL_OFFSET_0;
1386         msg[1]=I2O_CMD_ADAPTER_RESET<<24|HOST_TID<<12|ADAPTER_TID;
1387         msg[2]=0;
1388         msg[3]=0;
1389         msg[4]=0;
1390         msg[5]=0;
1391         msg[6]=dma_low(addr);
1392         msg[7]=dma_high(addr);
1393 
1394         memcpy_toio(pHba->msg_addr_virt+m, msg, sizeof(msg));
1395         wmb();
1396         writel(m, pHba->post_port);
1397         wmb();
1398 
1399         while(*status == 0){
1400                 if(time_after(jiffies,timeout)){
1401                         printk(KERN_WARNING"%s: IOP Reset Timeout\n",pHba->name);
1402                         /* We lose 4 bytes of "status" here, but we cannot
1403                            free these because controller may awake and corrupt
1404                            those bytes at any time */
1405                         /* dma_free_coherent(&pHba->pDev->dev, 4, buf, addr); */
1406                         return -ETIMEDOUT;
1407                 }
1408                 rmb();
1409                 schedule_timeout_uninterruptible(1);
1410         }
1411 
1412         if(*status == 0x01 /*I2O_EXEC_IOP_RESET_IN_PROGRESS*/) {
1413                 PDEBUG("%s: Reset in progress...\n", pHba->name);
1414                 // Here we wait for message frame to become available
1415                 // indicated that reset has finished
1416                 do {
1417                         rmb();
1418                         m = readl(pHba->post_port);
1419                         if (m != EMPTY_QUEUE) {
1420                                 break;
1421                         }
1422                         if(time_after(jiffies,timeout)){
1423                                 printk(KERN_ERR "%s:Timeout waiting for IOP Reset.\n",pHba->name);
1424                                 /* We lose 4 bytes of "status" here, but we
1425                                    cannot free these because controller may
1426                                    awake and corrupt those bytes at any time */
1427                                 /* dma_free_coherent(&pHba->pDev->dev, 4, buf, addr); */
1428                                 return -ETIMEDOUT;
1429                         }
1430                         schedule_timeout_uninterruptible(1);
1431                 } while (m == EMPTY_QUEUE);
1432                 // Flush the offset
1433                 adpt_send_nop(pHba, m);
1434         }
1435         adpt_i2o_status_get(pHba);
1436         if(*status == 0x02 ||
1437                         pHba->status_block->iop_state != ADAPTER_STATE_RESET) {
1438                 printk(KERN_WARNING"%s: Reset reject, trying to clear\n",
1439                                 pHba->name);
1440         } else {
1441                 PDEBUG("%s: Reset completed.\n", pHba->name);
1442         }
1443 
1444         dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
1445 #ifdef UARTDELAY
1446         // This delay is to allow someone attached to the card through the debug UART to 
1447         // set up the dump levels that they want before the rest of the initialization sequence
1448         adpt_delay(20000);
1449 #endif
1450         return 0;
1451 }
1452 
1453 
1454 static int adpt_i2o_parse_lct(adpt_hba* pHba)
1455 {
1456         int i;
1457         int max;
1458         int tid;
1459         struct i2o_device *d;
1460         i2o_lct *lct = pHba->lct;
1461         u8 bus_no = 0;
1462         s16 scsi_id;
1463         u64 scsi_lun;
1464         u32 buf[10]; // larger than 7, or 8 ...
1465         struct adpt_device* pDev; 
1466         
1467         if (lct == NULL) {
1468                 printk(KERN_ERR "%s: LCT is empty???\n",pHba->name);
1469                 return -1;
1470         }
1471         
1472         max = lct->table_size;  
1473         max -= 3;
1474         max /= 9;
1475 
1476         for(i=0;i<max;i++) {
1477                 if( lct->lct_entry[i].user_tid != 0xfff){
1478                         /*
1479                          * If we have hidden devices, we need to inform the upper layers about
1480                          * the possible maximum id reference to handle device access when
1481                          * an array is disassembled. This code has no other purpose but to
1482                          * allow us future access to devices that are currently hidden
1483                          * behind arrays, hotspares or have not been configured (JBOD mode).
1484                          */
1485                         if( lct->lct_entry[i].class_id != I2O_CLASS_RANDOM_BLOCK_STORAGE &&
1486                             lct->lct_entry[i].class_id != I2O_CLASS_SCSI_PERIPHERAL &&
1487                             lct->lct_entry[i].class_id != I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL ){
1488                                 continue;
1489                         }
1490                         tid = lct->lct_entry[i].tid;
1491                         // I2O_DPT_DEVICE_INFO_GROUP_NO;
1492                         if(adpt_i2o_query_scalar(pHba, tid, 0x8000, -1, buf, 32)<0) {
1493                                 continue;
1494                         }
1495                         bus_no = buf[0]>>16;
1496                         scsi_id = buf[1];
1497                         scsi_lun = scsilun_to_int((struct scsi_lun *)&buf[2]);
1498                         if(bus_no >= MAX_CHANNEL) {     // Something wrong skip it
1499                                 printk(KERN_WARNING"%s: Channel number %d out of range \n", pHba->name, bus_no);
1500                                 continue;
1501                         }
1502                         if (scsi_id >= MAX_ID){
1503                                 printk(KERN_WARNING"%s: SCSI ID %d out of range \n", pHba->name, bus_no);
1504                                 continue;
1505                         }
1506                         if(bus_no > pHba->top_scsi_channel){
1507                                 pHba->top_scsi_channel = bus_no;
1508                         }
1509                         if(scsi_id > pHba->top_scsi_id){
1510                                 pHba->top_scsi_id = scsi_id;
1511                         }
1512                         if(scsi_lun > pHba->top_scsi_lun){
1513                                 pHba->top_scsi_lun = scsi_lun;
1514                         }
1515                         continue;
1516                 }
1517                 d = kmalloc(sizeof(struct i2o_device), GFP_KERNEL);
1518                 if(d==NULL)
1519                 {
1520                         printk(KERN_CRIT"%s: Out of memory for I2O device data.\n",pHba->name);
1521                         return -ENOMEM;
1522                 }
1523                 
1524                 d->controller = pHba;
1525                 d->next = NULL;
1526 
1527                 memcpy(&d->lct_data, &lct->lct_entry[i], sizeof(i2o_lct_entry));
1528 
1529                 d->flags = 0;
1530                 tid = d->lct_data.tid;
1531                 adpt_i2o_report_hba_unit(pHba, d);
1532                 adpt_i2o_install_device(pHba, d);
1533         }
1534         bus_no = 0;
1535         for(d = pHba->devices; d ; d = d->next) {
1536                 if(d->lct_data.class_id  == I2O_CLASS_BUS_ADAPTER_PORT ||
1537                    d->lct_data.class_id  == I2O_CLASS_FIBRE_CHANNEL_PORT){
1538                         tid = d->lct_data.tid;
1539                         // TODO get the bus_no from hrt-but for now they are in order
1540                         //bus_no = 
1541                         if(bus_no > pHba->top_scsi_channel){
1542                                 pHba->top_scsi_channel = bus_no;
1543                         }
1544                         pHba->channel[bus_no].type = d->lct_data.class_id;
1545                         pHba->channel[bus_no].tid = tid;
1546                         if(adpt_i2o_query_scalar(pHba, tid, 0x0200, -1, buf, 28)>=0)
1547                         {
1548                                 pHba->channel[bus_no].scsi_id = buf[1];
1549                                 PDEBUG("Bus %d - SCSI ID %d.\n", bus_no, buf[1]);
1550                         }
1551                         // TODO remove - this is just until we get from hrt
1552                         bus_no++;
1553                         if(bus_no >= MAX_CHANNEL) {     // Something wrong skip it
1554                                 printk(KERN_WARNING"%s: Channel number %d out of range - LCT\n", pHba->name, bus_no);
1555                                 break;
1556                         }
1557                 }
1558         }
1559 
1560         // Setup adpt_device table
1561         for(d = pHba->devices; d ; d = d->next) {
1562                 if(d->lct_data.class_id  == I2O_CLASS_RANDOM_BLOCK_STORAGE ||
1563                    d->lct_data.class_id  == I2O_CLASS_SCSI_PERIPHERAL ||
1564                    d->lct_data.class_id  == I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL ){
1565 
1566                         tid = d->lct_data.tid;
1567                         scsi_id = -1;
1568                         // I2O_DPT_DEVICE_INFO_GROUP_NO;
1569                         if(adpt_i2o_query_scalar(pHba, tid, 0x8000, -1, buf, 32)>=0) {
1570                                 bus_no = buf[0]>>16;
1571                                 scsi_id = buf[1];
1572                                 scsi_lun = scsilun_to_int((struct scsi_lun *)&buf[2]);
1573                                 if(bus_no >= MAX_CHANNEL) {     // Something wrong skip it
1574                                         continue;
1575                                 }
1576                                 if (scsi_id >= MAX_ID) {
1577                                         continue;
1578                                 }
1579                                 if( pHba->channel[bus_no].device[scsi_id] == NULL){
1580                                         pDev =  kzalloc(sizeof(struct adpt_device),GFP_KERNEL);
1581                                         if(pDev == NULL) {
1582                                                 return -ENOMEM;
1583                                         }
1584                                         pHba->channel[bus_no].device[scsi_id] = pDev;
1585                                 } else {
1586                                         for( pDev = pHba->channel[bus_no].device[scsi_id];      
1587                                                         pDev->next_lun; pDev = pDev->next_lun){
1588                                         }
1589                                         pDev->next_lun = kzalloc(sizeof(struct adpt_device),GFP_KERNEL);
1590                                         if(pDev->next_lun == NULL) {
1591                                                 return -ENOMEM;
1592                                         }
1593                                         pDev = pDev->next_lun;
1594                                 }
1595                                 pDev->tid = tid;
1596                                 pDev->scsi_channel = bus_no;
1597                                 pDev->scsi_id = scsi_id;
1598                                 pDev->scsi_lun = scsi_lun;
1599                                 pDev->pI2o_dev = d;
1600                                 d->owner = pDev;
1601                                 pDev->type = (buf[0])&0xff;
1602                                 pDev->flags = (buf[0]>>8)&0xff;
1603                                 if(scsi_id > pHba->top_scsi_id){
1604                                         pHba->top_scsi_id = scsi_id;
1605                                 }
1606                                 if(scsi_lun > pHba->top_scsi_lun){
1607                                         pHba->top_scsi_lun = scsi_lun;
1608                                 }
1609                         }
1610                         if(scsi_id == -1){
1611                                 printk(KERN_WARNING"Could not find SCSI ID for %s\n",
1612                                                 d->lct_data.identity_tag);
1613                         }
1614                 }
1615         }
1616         return 0;
1617 }
1618 
1619 
1620 /*
1621  *      Each I2O controller has a chain of devices on it - these match
1622  *      the useful parts of the LCT of the board.
1623  */
1624  
1625 static int adpt_i2o_install_device(adpt_hba* pHba, struct i2o_device *d)
1626 {
1627         mutex_lock(&adpt_configuration_lock);
1628         d->controller=pHba;
1629         d->owner=NULL;
1630         d->next=pHba->devices;
1631         d->prev=NULL;
1632         if (pHba->devices != NULL){
1633                 pHba->devices->prev=d;
1634         }
1635         pHba->devices=d;
1636         *d->dev_name = 0;
1637 
1638         mutex_unlock(&adpt_configuration_lock);
1639         return 0;
1640 }
1641 
1642 static int adpt_open(struct inode *inode, struct file *file)
1643 {
1644         int minor;
1645         adpt_hba* pHba;
1646 
1647         mutex_lock(&adpt_mutex);
1648         //TODO check for root access
1649         //
1650         minor = iminor(inode);
1651         if (minor >= hba_count) {
1652                 mutex_unlock(&adpt_mutex);
1653                 return -ENXIO;
1654         }
1655         mutex_lock(&adpt_configuration_lock);
1656         for (pHba = hba_chain; pHba; pHba = pHba->next) {
1657                 if (pHba->unit == minor) {
1658                         break;  /* found adapter */
1659                 }
1660         }
1661         if (pHba == NULL) {
1662                 mutex_unlock(&adpt_configuration_lock);
1663                 mutex_unlock(&adpt_mutex);
1664                 return -ENXIO;
1665         }
1666 
1667 //      if(pHba->in_use){
1668         //      mutex_unlock(&adpt_configuration_lock);
1669 //              return -EBUSY;
1670 //      }
1671 
1672         pHba->in_use = 1;
1673         mutex_unlock(&adpt_configuration_lock);
1674         mutex_unlock(&adpt_mutex);
1675 
1676         return 0;
1677 }
1678 
1679 static int adpt_close(struct inode *inode, struct file *file)
1680 {
1681         int minor;
1682         adpt_hba* pHba;
1683 
1684         minor = iminor(inode);
1685         if (minor >= hba_count) {
1686                 return -ENXIO;
1687         }
1688         mutex_lock(&adpt_configuration_lock);
1689         for (pHba = hba_chain; pHba; pHba = pHba->next) {
1690                 if (pHba->unit == minor) {
1691                         break;  /* found adapter */
1692                 }
1693         }
1694         mutex_unlock(&adpt_configuration_lock);
1695         if (pHba == NULL) {
1696                 return -ENXIO;
1697         }
1698 
1699         pHba->in_use = 0;
1700 
1701         return 0;
1702 }
1703 
1704 
1705 static int adpt_i2o_passthru(adpt_hba* pHba, u32 __user *arg)
1706 {
1707         u32 msg[MAX_MESSAGE_SIZE];
1708         u32* reply = NULL;
1709         u32 size = 0;
1710         u32 reply_size = 0;
1711         u32 __user *user_msg = arg;
1712         u32 __user * user_reply = NULL;
1713         void *sg_list[pHba->sg_tablesize];
1714         u32 sg_offset = 0;
1715         u32 sg_count = 0;
1716         int sg_index = 0;
1717         u32 i = 0;
1718         u32 rcode = 0;
1719         void *p = NULL;
1720         dma_addr_t addr;
1721         ulong flags = 0;
1722 
1723         memset(&msg, 0, MAX_MESSAGE_SIZE*4);
1724         // get user msg size in u32s 
1725         if(get_user(size, &user_msg[0])){
1726                 return -EFAULT;
1727         }
1728         size = size>>16;
1729 
1730         user_reply = &user_msg[size];
1731         if(size > MAX_MESSAGE_SIZE){
1732                 return -EFAULT;
1733         }
1734         size *= 4; // Convert to bytes
1735 
1736         /* Copy in the user's I2O command */
1737         if(copy_from_user(msg, user_msg, size)) {
1738                 return -EFAULT;
1739         }
1740         get_user(reply_size, &user_reply[0]);
1741         reply_size = reply_size>>16;
1742         if(reply_size > REPLY_FRAME_SIZE){
1743                 reply_size = REPLY_FRAME_SIZE;
1744         }
1745         reply_size *= 4;
1746         reply = kzalloc(REPLY_FRAME_SIZE*4, GFP_KERNEL);
1747         if(reply == NULL) {
1748                 printk(KERN_WARNING"%s: Could not allocate reply buffer\n",pHba->name);
1749                 return -ENOMEM;
1750         }
1751         sg_offset = (msg[0]>>4)&0xf;
1752         msg[2] = 0x40000000; // IOCTL context
1753         msg[3] = adpt_ioctl_to_context(pHba, reply);
1754         if (msg[3] == (u32)-1)
1755                 return -EBUSY;
1756 
1757         memset(sg_list,0, sizeof(sg_list[0])*pHba->sg_tablesize);
1758         if(sg_offset) {
1759                 // TODO add 64 bit API
1760                 struct sg_simple_element *sg =  (struct sg_simple_element*) (msg+sg_offset);
1761                 sg_count = (size - sg_offset*4) / sizeof(struct sg_simple_element);
1762                 if (sg_count > pHba->sg_tablesize){
1763                         printk(KERN_DEBUG"%s:IOCTL SG List too large (%u)\n", pHba->name,sg_count);
1764                         kfree (reply);
1765                         return -EINVAL;
1766                 }
1767 
1768                 for(i = 0; i < sg_count; i++) {
1769                         int sg_size;
1770 
1771                         if (!(sg[i].flag_count & 0x10000000 /*I2O_SGL_FLAGS_SIMPLE_ADDRESS_ELEMENT*/)) {
1772                                 printk(KERN_DEBUG"%s:Bad SG element %d - not simple (%x)\n",pHba->name,i,  sg[i].flag_count);
1773                                 rcode = -EINVAL;
1774                                 goto cleanup;
1775                         }
1776                         sg_size = sg[i].flag_count & 0xffffff;      
1777                         /* Allocate memory for the transfer */
1778                         p = dma_alloc_coherent(&pHba->pDev->dev, sg_size, &addr, GFP_KERNEL);
1779                         if(!p) {
1780                                 printk(KERN_DEBUG"%s: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
1781                                                 pHba->name,sg_size,i,sg_count);
1782                                 rcode = -ENOMEM;
1783                                 goto cleanup;
1784                         }
1785                         sg_list[sg_index++] = p; // sglist indexed with input frame, not our internal frame.
1786                         /* Copy in the user's SG buffer if necessary */
1787                         if(sg[i].flag_count & 0x04000000 /*I2O_SGL_FLAGS_DIR*/) {
1788                                 // sg_simple_element API is 32 bit
1789                                 if (copy_from_user(p,(void __user *)(ulong)sg[i].addr_bus, sg_size)) {
1790                                         printk(KERN_DEBUG"%s: Could not copy SG buf %d FROM user\n",pHba->name,i);
1791                                         rcode = -EFAULT;
1792                                         goto cleanup;
1793                                 }
1794                         }
1795                         /* sg_simple_element API is 32 bit, but addr < 4GB */
1796                         sg[i].addr_bus = addr;
1797                 }
1798         }
1799 
1800         do {
1801                 /*
1802                  * Stop any new commands from enterring the
1803                  * controller while processing the ioctl
1804                  */
1805                 if (pHba->host) {
1806                         scsi_block_requests(pHba->host);
1807                         spin_lock_irqsave(pHba->host->host_lock, flags);
1808                 }
1809                 rcode = adpt_i2o_post_wait(pHba, msg, size, FOREVER);
1810                 if (rcode != 0)
1811                         printk("adpt_i2o_passthru: post wait failed %d %p\n",
1812                                         rcode, reply);
1813                 if (pHba->host) {
1814                         spin_unlock_irqrestore(pHba->host->host_lock, flags);
1815                         scsi_unblock_requests(pHba->host);
1816                 }
1817         } while (rcode == -ETIMEDOUT);
1818 
1819         if(rcode){
1820                 goto cleanup;
1821         }
1822 
1823         if(sg_offset) {
1824         /* Copy back the Scatter Gather buffers back to user space */
1825                 u32 j;
1826                 // TODO add 64 bit API
1827                 struct sg_simple_element* sg;
1828                 int sg_size;
1829 
1830                 // re-acquire the original message to handle correctly the sg copy operation
1831                 memset(&msg, 0, MAX_MESSAGE_SIZE*4); 
1832                 // get user msg size in u32s 
1833                 if(get_user(size, &user_msg[0])){
1834                         rcode = -EFAULT; 
1835                         goto cleanup; 
1836                 }
1837                 size = size>>16;
1838                 size *= 4;
1839                 if (size > MAX_MESSAGE_SIZE) {
1840                         rcode = -EINVAL;
1841                         goto cleanup;
1842                 }
1843                 /* Copy in the user's I2O command */
1844                 if (copy_from_user (msg, user_msg, size)) {
1845                         rcode = -EFAULT;
1846                         goto cleanup;
1847                 }
1848                 sg_count = (size - sg_offset*4) / sizeof(struct sg_simple_element);
1849 
1850                 // TODO add 64 bit API
1851                 sg       = (struct sg_simple_element*)(msg + sg_offset);
1852                 for (j = 0; j < sg_count; j++) {
1853                         /* Copy out the SG list to user's buffer if necessary */
1854                         if(! (sg[j].flag_count & 0x4000000 /*I2O_SGL_FLAGS_DIR*/)) {
1855                                 sg_size = sg[j].flag_count & 0xffffff; 
1856                                 // sg_simple_element API is 32 bit
1857                                 if (copy_to_user((void __user *)(ulong)sg[j].addr_bus,sg_list[j], sg_size)) {
1858                                         printk(KERN_WARNING"%s: Could not copy %p TO user %x\n",pHba->name, sg_list[j], sg[j].addr_bus);
1859                                         rcode = -EFAULT;
1860                                         goto cleanup;
1861                                 }
1862                         }
1863                 }
1864         } 
1865 
1866         /* Copy back the reply to user space */
1867         if (reply_size) {
1868                 // we wrote our own values for context - now restore the user supplied ones
1869                 if(copy_from_user(reply+2, user_msg+2, sizeof(u32)*2)) {
1870                         printk(KERN_WARNING"%s: Could not copy message context FROM user\n",pHba->name);
1871                         rcode = -EFAULT;
1872                 }
1873                 if(copy_to_user(user_reply, reply, reply_size)) {
1874                         printk(KERN_WARNING"%s: Could not copy reply TO user\n",pHba->name);
1875                         rcode = -EFAULT;
1876                 }
1877         }
1878 
1879 
1880 cleanup:
1881         if (rcode != -ETIME && rcode != -EINTR) {
1882                 struct sg_simple_element *sg =
1883                                 (struct sg_simple_element*) (msg +sg_offset);
1884                 kfree (reply);
1885                 while(sg_index) {
1886                         if(sg_list[--sg_index]) {
1887                                 dma_free_coherent(&pHba->pDev->dev,
1888                                         sg[sg_index].flag_count & 0xffffff,
1889                                         sg_list[sg_index],
1890                                         sg[sg_index].addr_bus);
1891                         }
1892                 }
1893         }
1894         return rcode;
1895 }
1896 
1897 #if defined __ia64__ 
1898 static void adpt_ia64_info(sysInfo_S* si)
1899 {
1900         // This is all the info we need for now
1901         // We will add more info as our new
1902         // managmenent utility requires it
1903         si->processorType = PROC_IA64;
1904 }
1905 #endif
1906 
1907 #if defined __sparc__ 
1908 static void adpt_sparc_info(sysInfo_S* si)
1909 {
1910         // This is all the info we need for now
1911         // We will add more info as our new
1912         // managmenent utility requires it
1913         si->processorType = PROC_ULTRASPARC;
1914 }
1915 #endif
1916 #if defined __alpha__ 
1917 static void adpt_alpha_info(sysInfo_S* si)
1918 {
1919         // This is all the info we need for now
1920         // We will add more info as our new
1921         // managmenent utility requires it
1922         si->processorType = PROC_ALPHA;
1923 }
1924 #endif
1925 
1926 #if defined __i386__
1927 static void adpt_i386_info(sysInfo_S* si)
1928 {
1929         // This is all the info we need for now
1930         // We will add more info as our new
1931         // managmenent utility requires it
1932         switch (boot_cpu_data.x86) {
1933         case CPU_386:
1934                 si->processorType = PROC_386;
1935                 break;
1936         case CPU_486:
1937                 si->processorType = PROC_486;
1938                 break;
1939         case CPU_586:
1940                 si->processorType = PROC_PENTIUM;
1941                 break;
1942         default:  // Just in case 
1943                 si->processorType = PROC_PENTIUM;
1944                 break;
1945         }
1946 }
1947 #endif
1948 
1949 /*
1950  * This routine returns information about the system.  This does not effect
1951  * any logic and if the info is wrong - it doesn't matter.
1952  */
1953 
1954 /* Get all the info we can not get from kernel services */
1955 static int adpt_system_info(void __user *buffer)
1956 {
1957         sysInfo_S si;
1958 
1959         memset(&si, 0, sizeof(si));
1960 
1961         si.osType = OS_LINUX;
1962         si.osMajorVersion = 0;
1963         si.osMinorVersion = 0;
1964         si.osRevision = 0;
1965         si.busType = SI_PCI_BUS;
1966         si.processorFamily = DPTI_sig.dsProcessorFamily;
1967 
1968 #if defined __i386__
1969         adpt_i386_info(&si);
1970 #elif defined (__ia64__)
1971         adpt_ia64_info(&si);
1972 #elif defined(__sparc__)
1973         adpt_sparc_info(&si);
1974 #elif defined (__alpha__)
1975         adpt_alpha_info(&si);
1976 #else
1977         si.processorType = 0xff ;
1978 #endif
1979         if (copy_to_user(buffer, &si, sizeof(si))){
1980                 printk(KERN_WARNING"dpti: Could not copy buffer TO user\n");
1981                 return -EFAULT;
1982         }
1983 
1984         return 0;
1985 }
1986 
1987 static int adpt_ioctl(struct inode *inode, struct file *file, uint cmd, ulong arg)
1988 {
1989         int minor;
1990         int error = 0;
1991         adpt_hba* pHba;
1992         ulong flags = 0;
1993         void __user *argp = (void __user *)arg;
1994 
1995         minor = iminor(inode);
1996         if (minor >= DPTI_MAX_HBA){
1997                 return -ENXIO;
1998         }
1999         mutex_lock(&adpt_configuration_lock);
2000         for (pHba = hba_chain; pHba; pHba = pHba->next) {
2001                 if (pHba->unit == minor) {
2002                         break;  /* found adapter */
2003                 }
2004         }
2005         mutex_unlock(&adpt_configuration_lock);
2006         if(pHba == NULL){
2007                 return -ENXIO;
2008         }
2009 
2010         while((volatile u32) pHba->state & DPTI_STATE_RESET )
2011                 schedule_timeout_uninterruptible(2);
2012 
2013         switch (cmd) {
2014         // TODO: handle 3 cases
2015         case DPT_SIGNATURE:
2016                 if (copy_to_user(argp, &DPTI_sig, sizeof(DPTI_sig))) {
2017                         return -EFAULT;
2018                 }
2019                 break;
2020         case I2OUSRCMD:
2021                 return adpt_i2o_passthru(pHba, argp);
2022 
2023         case DPT_CTRLINFO:{
2024                 drvrHBAinfo_S HbaInfo;
2025 
2026 #define FLG_OSD_PCI_VALID 0x0001
2027 #define FLG_OSD_DMA       0x0002
2028 #define FLG_OSD_I2O       0x0004
2029                 memset(&HbaInfo, 0, sizeof(HbaInfo));
2030                 HbaInfo.drvrHBAnum = pHba->unit;
2031                 HbaInfo.baseAddr = (ulong) pHba->base_addr_phys;
2032                 HbaInfo.blinkState = adpt_read_blink_led(pHba);
2033                 HbaInfo.pciBusNum =  pHba->pDev->bus->number;
2034                 HbaInfo.pciDeviceNum=PCI_SLOT(pHba->pDev->devfn); 
2035                 HbaInfo.Interrupt = pHba->pDev->irq; 
2036                 HbaInfo.hbaFlags = FLG_OSD_PCI_VALID | FLG_OSD_DMA | FLG_OSD_I2O;
2037                 if(copy_to_user(argp, &HbaInfo, sizeof(HbaInfo))){
2038                         printk(KERN_WARNING"%s: Could not copy HbaInfo TO user\n",pHba->name);
2039                         return -EFAULT;
2040                 }
2041                 break;
2042                 }
2043         case DPT_SYSINFO:
2044                 return adpt_system_info(argp);
2045         case DPT_BLINKLED:{
2046                 u32 value;
2047                 value = (u32)adpt_read_blink_led(pHba);
2048                 if (copy_to_user(argp, &value, sizeof(value))) {
2049                         return -EFAULT;
2050                 }
2051                 break;
2052                 }
2053         case I2ORESETCMD:
2054                 if(pHba->host)
2055                         spin_lock_irqsave(pHba->host->host_lock, flags);
2056                 adpt_hba_reset(pHba);
2057                 if(pHba->host)
2058                         spin_unlock_irqrestore(pHba->host->host_lock, flags);
2059                 break;
2060         case I2ORESCANCMD:
2061                 adpt_rescan(pHba);
2062                 break;
2063         default:
2064                 return -EINVAL;
2065         }
2066 
2067         return error;
2068 }
2069 
2070 static long adpt_unlocked_ioctl(struct file *file, uint cmd, ulong arg)
2071 {
2072         struct inode *inode;
2073         long ret;
2074  
2075         inode = file_inode(file);
2076  
2077         mutex_lock(&adpt_mutex);
2078         ret = adpt_ioctl(inode, file, cmd, arg);
2079         mutex_unlock(&adpt_mutex);
2080 
2081         return ret;
2082 }
2083 
2084 #ifdef CONFIG_COMPAT
2085 static long compat_adpt_ioctl(struct file *file,
2086                                 unsigned int cmd, unsigned long arg)
2087 {
2088         struct inode *inode;
2089         long ret;
2090  
2091         inode = file_inode(file);
2092  
2093         mutex_lock(&adpt_mutex);
2094  
2095         switch(cmd) {
2096                 case DPT_SIGNATURE:
2097                 case I2OUSRCMD:
2098                 case DPT_CTRLINFO:
2099                 case DPT_SYSINFO:
2100                 case DPT_BLINKLED:
2101                 case I2ORESETCMD:
2102                 case I2ORESCANCMD:
2103                 case (DPT_TARGET_BUSY & 0xFFFF):
2104                 case DPT_TARGET_BUSY:
2105                         ret = adpt_ioctl(inode, file, cmd, arg);
2106                         break;
2107                 default:
2108                         ret =  -ENOIOCTLCMD;
2109         }
2110  
2111         mutex_unlock(&adpt_mutex);
2112  
2113         return ret;
2114 }
2115 #endif
2116 
2117 static irqreturn_t adpt_isr(int irq, void *dev_id)
2118 {
2119         struct scsi_cmnd* cmd;
2120         adpt_hba* pHba = dev_id;
2121         u32 m;
2122         void __iomem *reply;
2123         u32 status=0;
2124         u32 context;
2125         ulong flags = 0;
2126         int handled = 0;
2127 
2128         if (pHba == NULL){
2129                 printk(KERN_WARNING"adpt_isr: NULL dev_id\n");
2130                 return IRQ_NONE;
2131         }
2132         if(pHba->host)
2133                 spin_lock_irqsave(pHba->host->host_lock, flags);
2134 
2135         while( readl(pHba->irq_mask) & I2O_INTERRUPT_PENDING_B) {
2136                 m = readl(pHba->reply_port);
2137                 if(m == EMPTY_QUEUE){
2138                         // Try twice then give up
2139                         rmb();
2140                         m = readl(pHba->reply_port);
2141                         if(m == EMPTY_QUEUE){ 
2142                                 // This really should not happen
2143                                 printk(KERN_ERR"dpti: Could not get reply frame\n");
2144                                 goto out;
2145                         }
2146                 }
2147                 if (pHba->reply_pool_pa <= m &&
2148                     m < pHba->reply_pool_pa +
2149                         (pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4)) {
2150                         reply = (u8 *)pHba->reply_pool +
2151                                                 (m - pHba->reply_pool_pa);
2152                 } else {
2153                         /* Ick, we should *never* be here */
2154                         printk(KERN_ERR "dpti: reply frame not from pool\n");
2155                         reply = (u8 *)bus_to_virt(m);
2156                 }
2157 
2158                 if (readl(reply) & MSG_FAIL) {
2159                         u32 old_m = readl(reply+28); 
2160                         void __iomem *msg;
2161                         u32 old_context;
2162                         PDEBUG("%s: Failed message\n",pHba->name);
2163                         if(old_m >= 0x100000){
2164                                 printk(KERN_ERR"%s: Bad preserved MFA (%x)- dropping frame\n",pHba->name,old_m);
2165                                 writel(m,pHba->reply_port);
2166                                 continue;
2167                         }
2168                         // Transaction context is 0 in failed reply frame
2169                         msg = pHba->msg_addr_virt + old_m;
2170                         old_context = readl(msg+12);
2171                         writel(old_context, reply+12);
2172                         adpt_send_nop(pHba, old_m);
2173                 } 
2174                 context = readl(reply+8);
2175                 if(context & 0x40000000){ // IOCTL
2176                         void *p = adpt_ioctl_from_context(pHba, readl(reply+12));
2177                         if( p != NULL) {
2178                                 memcpy_fromio(p, reply, REPLY_FRAME_SIZE * 4);
2179                         }
2180                         // All IOCTLs will also be post wait
2181                 }
2182                 if(context & 0x80000000){ // Post wait message
2183                         status = readl(reply+16);
2184                         if(status  >> 24){
2185                                 status &=  0xffff; /* Get detail status */
2186                         } else {
2187                                 status = I2O_POST_WAIT_OK;
2188                         }
2189                         if(!(context & 0x40000000)) {
2190                                 cmd = adpt_cmd_from_context(pHba,
2191                                                         readl(reply+12));
2192                                 if(cmd != NULL) {
2193                                         printk(KERN_WARNING"%s: Apparent SCSI cmd in Post Wait Context - cmd=%p context=%x\n", pHba->name, cmd, context);
2194                                 }
2195                         }
2196                         adpt_i2o_post_wait_complete(context, status);
2197                 } else { // SCSI message
2198                         cmd = adpt_cmd_from_context (pHba, readl(reply+12));
2199                         if(cmd != NULL){
2200                                 scsi_dma_unmap(cmd);
2201                                 if(cmd->serial_number != 0) { // If not timedout
2202                                         adpt_i2o_to_scsi(reply, cmd);
2203                                 }
2204                         }
2205                 }
2206                 writel(m, pHba->reply_port);
2207                 wmb();
2208                 rmb();
2209         }
2210         handled = 1;
2211 out:    if(pHba->host)
2212                 spin_unlock_irqrestore(pHba->host->host_lock, flags);
2213         return IRQ_RETVAL(handled);
2214 }
2215 
2216 static s32 adpt_scsi_to_i2o(adpt_hba* pHba, struct scsi_cmnd* cmd, struct adpt_device* d)
2217 {
2218         int i;
2219         u32 msg[MAX_MESSAGE_SIZE];
2220         u32* mptr;
2221         u32* lptr;
2222         u32 *lenptr;
2223         int direction;
2224         int scsidir;
2225         int nseg;
2226         u32 len;
2227         u32 reqlen;
2228         s32 rcode;
2229         dma_addr_t addr;
2230 
2231         memset(msg, 0 , sizeof(msg));
2232         len = scsi_bufflen(cmd);
2233         direction = 0x00000000; 
2234         
2235         scsidir = 0x00000000;                   // DATA NO XFER
2236         if(len) {
2237                 /*
2238                  * Set SCBFlags to indicate if data is being transferred
2239                  * in or out, or no data transfer
2240                  * Note:  Do not have to verify index is less than 0 since
2241                  * cmd->cmnd[0] is an unsigned char
2242                  */
2243                 switch(cmd->sc_data_direction){
2244                 case DMA_FROM_DEVICE:
2245                         scsidir  =0x40000000;   // DATA IN  (iop<--dev)
2246                         break;
2247                 case DMA_TO_DEVICE:
2248                         direction=0x04000000;   // SGL OUT
2249                         scsidir  =0x80000000;   // DATA OUT (iop-->dev)
2250                         break;
2251                 case DMA_NONE:
2252                         break;
2253                 case DMA_BIDIRECTIONAL:
2254                         scsidir  =0x40000000;   // DATA IN  (iop<--dev)
2255                         // Assume In - and continue;
2256                         break;
2257                 default:
2258                         printk(KERN_WARNING"%s: scsi opcode 0x%x not supported.\n",
2259                              pHba->name, cmd->cmnd[0]);
2260                         cmd->result = (DID_OK <<16) | (INITIATOR_ERROR << 8);
2261                         cmd->scsi_done(cmd);
2262                         return  0;
2263                 }
2264         }
2265         // msg[0] is set later
2266         // I2O_CMD_SCSI_EXEC
2267         msg[1] = ((0xff<<24)|(HOST_TID<<12)|d->tid);
2268         msg[2] = 0;
2269         msg[3] = adpt_cmd_to_context(cmd);  /* Want SCSI control block back */
2270         // Our cards use the transaction context as the tag for queueing
2271         // Adaptec/DPT Private stuff 
2272         msg[4] = I2O_CMD_SCSI_EXEC|(DPT_ORGANIZATION_ID<<16);
2273         msg[5] = d->tid;
2274         /* Direction, disconnect ok | sense data | simple queue , CDBLen */
2275         // I2O_SCB_FLAG_ENABLE_DISCONNECT | 
2276         // I2O_SCB_FLAG_SIMPLE_QUEUE_TAG | 
2277         // I2O_SCB_FLAG_SENSE_DATA_IN_MESSAGE;
2278         msg[6] = scsidir|0x20a00000|cmd->cmd_len;
2279 
2280         mptr=msg+7;
2281 
2282         // Write SCSI command into the message - always 16 byte block 
2283         memset(mptr, 0,  16);
2284         memcpy(mptr, cmd->cmnd, cmd->cmd_len);
2285         mptr+=4;
2286         lenptr=mptr++;          /* Remember me - fill in when we know */
2287         if (dpt_dma64(pHba)) {
2288                 reqlen = 16;            // SINGLE SGE
2289                 *mptr++ = (0x7C<<24)+(2<<16)+0x02; /* Enable 64 bit */
2290                 *mptr++ = 1 << PAGE_SHIFT;
2291         } else {
2292                 reqlen = 14;            // SINGLE SGE
2293         }
2294         /* Now fill in the SGList and command */
2295 
2296         nseg = scsi_dma_map(cmd);
2297         BUG_ON(nseg < 0);
2298         if (nseg) {
2299                 struct scatterlist *sg;
2300 
2301                 len = 0;
2302                 scsi_for_each_sg(cmd, sg, nseg, i) {
2303                         lptr = mptr;
2304                         *mptr++ = direction|0x10000000|sg_dma_len(sg);
2305                         len+=sg_dma_len(sg);
2306                         addr = sg_dma_address(sg);
2307                         *mptr++ = dma_low(addr);
2308                         if (dpt_dma64(pHba))
2309                                 *mptr++ = dma_high(addr);
2310                         /* Make this an end of list */
2311                         if (i == nseg - 1)
2312                                 *lptr = direction|0xD0000000|sg_dma_len(sg);
2313                 }
2314                 reqlen = mptr - msg;
2315                 *lenptr = len;
2316                 
2317                 if(cmd->underflow && len != cmd->underflow){
2318                         printk(KERN_WARNING"Cmd len %08X Cmd underflow %08X\n",
2319                                 len, cmd->underflow);
2320                 }
2321         } else {
2322                 *lenptr = len = 0;
2323                 reqlen = 12;
2324         }
2325         
2326         /* Stick the headers on */
2327         msg[0] = reqlen<<16 | ((reqlen > 12) ? SGL_OFFSET_12 : SGL_OFFSET_0);
2328         
2329         // Send it on it's way
2330         rcode = adpt_i2o_post_this(pHba, msg, reqlen<<2);
2331         if (rcode == 0) {
2332                 return 0;
2333         }
2334         return rcode;
2335 }
2336 
2337 
2338 static s32 adpt_scsi_host_alloc(adpt_hba* pHba, struct scsi_host_template *sht)
2339 {
2340         struct Scsi_Host *host;
2341 
2342         host = scsi_host_alloc(sht, sizeof(adpt_hba*));
2343         if (host == NULL) {
2344                 printk("%s: scsi_host_alloc returned NULL\n", pHba->name);
2345                 return -1;
2346         }
2347         host->hostdata[0] = (unsigned long)pHba;
2348         pHba->host = host;
2349 
2350         host->irq = pHba->pDev->irq;
2351         /* no IO ports, so don't have to set host->io_port and
2352          * host->n_io_port
2353          */
2354         host->io_port = 0;
2355         host->n_io_port = 0;
2356                                 /* see comments in scsi_host.h */
2357         host->max_id = 16;
2358         host->max_lun = 256;
2359         host->max_channel = pHba->top_scsi_channel + 1;
2360         host->cmd_per_lun = 1;
2361         host->unique_id = (u32)sys_tbl_pa + pHba->unit;
2362         host->sg_tablesize = pHba->sg_tablesize;
2363         host->can_queue = pHba->post_fifo_size;
2364         host->use_cmd_list = 1;
2365 
2366         return 0;
2367 }
2368 
2369 
2370 static s32 adpt_i2o_to_scsi(void __iomem *reply, struct scsi_cmnd* cmd)
2371 {
2372         adpt_hba* pHba;
2373         u32 hba_status;
2374         u32 dev_status;
2375         u32 reply_flags = readl(reply) & 0xff00; // Leave it shifted up 8 bits 
2376         // I know this would look cleaner if I just read bytes
2377         // but the model I have been using for all the rest of the
2378         // io is in 4 byte words - so I keep that model
2379         u16 detailed_status = readl(reply+16) &0xffff;
2380         dev_status = (detailed_status & 0xff);
2381         hba_status = detailed_status >> 8;
2382 
2383         // calculate resid for sg 
2384         scsi_set_resid(cmd, scsi_bufflen(cmd) - readl(reply+20));
2385 
2386         pHba = (adpt_hba*) cmd->device->host->hostdata[0];
2387 
2388         cmd->sense_buffer[0] = '\0';  // initialize sense valid flag to false
2389 
2390         if(!(reply_flags & MSG_FAIL)) {
2391                 switch(detailed_status & I2O_SCSI_DSC_MASK) {
2392                 case I2O_SCSI_DSC_SUCCESS:
2393                         cmd->result = (DID_OK << 16);
2394                         // handle underflow
2395                         if (readl(reply+20) < cmd->underflow) {
2396                                 cmd->result = (DID_ERROR <<16);
2397                                 printk(KERN_WARNING"%s: SCSI CMD underflow\n",pHba->name);
2398                         }
2399                         break;
2400                 case I2O_SCSI_DSC_REQUEST_ABORTED:
2401                         cmd->result = (DID_ABORT << 16);
2402                         break;
2403                 case I2O_SCSI_DSC_PATH_INVALID:
2404                 case I2O_SCSI_DSC_DEVICE_NOT_PRESENT:
2405                 case I2O_SCSI_DSC_SELECTION_TIMEOUT:
2406                 case I2O_SCSI_DSC_COMMAND_TIMEOUT:
2407                 case I2O_SCSI_DSC_NO_ADAPTER:
2408                 case I2O_SCSI_DSC_RESOURCE_UNAVAILABLE:
2409                         printk(KERN_WARNING"%s: SCSI Timeout-Device (%d,%d,%llu) hba status=0x%x, dev status=0x%x, cmd=0x%x\n",
2410                                 pHba->name, (u32)cmd->device->channel, (u32)cmd->device->id, cmd->device->lun, hba_status, dev_status, cmd->cmnd[0]);
2411                         cmd->result = (DID_TIME_OUT << 16);
2412                         break;
2413                 case I2O_SCSI_DSC_ADAPTER_BUSY:
2414                 case I2O_SCSI_DSC_BUS_BUSY:
2415                         cmd->result = (DID_BUS_BUSY << 16);
2416                         break;
2417                 case I2O_SCSI_DSC_SCSI_BUS_RESET:
2418                 case I2O_SCSI_DSC_BDR_MESSAGE_SENT:
2419                         cmd->result = (DID_RESET << 16);
2420                         break;
2421                 case I2O_SCSI_DSC_PARITY_ERROR_FAILURE:
2422                         printk(KERN_WARNING"%s: SCSI CMD parity error\n",pHba->name);
2423                         cmd->result = (DID_PARITY << 16);
2424                         break;
2425                 case I2O_SCSI_DSC_UNABLE_TO_ABORT:
2426                 case I2O_SCSI_DSC_COMPLETE_WITH_ERROR:
2427                 case I2O_SCSI_DSC_UNABLE_TO_TERMINATE:
2428                 case I2O_SCSI_DSC_MR_MESSAGE_RECEIVED:
2429                 case I2O_SCSI_DSC_AUTOSENSE_FAILED:
2430                 case I2O_SCSI_DSC_DATA_OVERRUN:
2431                 case I2O_SCSI_DSC_UNEXPECTED_BUS_FREE:
2432                 case I2O_SCSI_DSC_SEQUENCE_FAILURE:
2433                 case I2O_SCSI_DSC_REQUEST_LENGTH_ERROR:
2434                 case I2O_SCSI_DSC_PROVIDE_FAILURE:
2435                 case I2O_SCSI_DSC_REQUEST_TERMINATED:
2436                 case I2O_SCSI_DSC_IDE_MESSAGE_SENT:
2437                 case I2O_SCSI_DSC_UNACKNOWLEDGED_EVENT:
2438                 case I2O_SCSI_DSC_MESSAGE_RECEIVED:
2439                 case I2O_SCSI_DSC_INVALID_CDB:
2440                 case I2O_SCSI_DSC_LUN_INVALID:
2441                 case I2O_SCSI_DSC_SCSI_TID_INVALID:
2442                 case I2O_SCSI_DSC_FUNCTION_UNAVAILABLE:
2443                 case I2O_SCSI_DSC_NO_NEXUS:
2444                 case I2O_SCSI_DSC_CDB_RECEIVED:
2445                 case I2O_SCSI_DSC_LUN_ALREADY_ENABLED:
2446                 case I2O_SCSI_DSC_QUEUE_FROZEN:
2447                 case I2O_SCSI_DSC_REQUEST_INVALID:
2448                 default:
2449                         printk(KERN_WARNING"%s: SCSI error %0x-Device(%d,%d,%llu) hba_status=0x%x, dev_status=0x%x, cmd=0x%x\n",
2450                                 pHba->name, detailed_status & I2O_SCSI_DSC_MASK, (u32)cmd->device->channel, (u32)cmd->device->id, cmd->device->lun,
2451                                hba_status, dev_status, cmd->cmnd[0]);
2452                         cmd->result = (DID_ERROR << 16);
2453                         break;
2454                 }
2455 
2456                 // copy over the request sense data if it was a check
2457                 // condition status
2458                 if (dev_status == SAM_STAT_CHECK_CONDITION) {
2459                         u32 len = min(SCSI_SENSE_BUFFERSIZE, 40);
2460                         // Copy over the sense data
2461                         memcpy_fromio(cmd->sense_buffer, (reply+28) , len);
2462                         if(cmd->sense_buffer[0] == 0x70 /* class 7 */ && 
2463                            cmd->sense_buffer[2] == DATA_PROTECT ){
2464                                 /* This is to handle an array failed */
2465                                 cmd->result = (DID_TIME_OUT << 16);
2466                                 printk(KERN_WARNING"%s: SCSI Data Protect-Device (%d,%d,%llu) hba_status=0x%x, dev_status=0x%x, cmd=0x%x\n",
2467                                         pHba->name, (u32)cmd->device->channel, (u32)cmd->device->id, cmd->device->lun,
2468                                         hba_status, dev_status, cmd->cmnd[0]);
2469 
2470                         }
2471                 }
2472         } else {
2473                 /* In this condtion we could not talk to the tid
2474                  * the card rejected it.  We should signal a retry
2475                  * for a limitted number of retries.
2476                  */
2477                 cmd->result = (DID_TIME_OUT << 16);
2478                 printk(KERN_WARNING"%s: I2O MSG_FAIL - Device (%d,%d,%llu) tid=%d, cmd=0x%x\n",
2479                         pHba->name, (u32)cmd->device->channel, (u32)cmd->device->id, cmd->device->lun,
2480                         ((struct adpt_device*)(cmd->device->hostdata))->tid, cmd->cmnd[0]);
2481         }
2482 
2483         cmd->result |= (dev_status);
2484 
2485         if(cmd->scsi_done != NULL){
2486                 cmd->scsi_done(cmd);
2487         } 
2488         return cmd->result;
2489 }
2490 
2491 
2492 static s32 adpt_rescan(adpt_hba* pHba)
2493 {
2494         s32 rcode;
2495         ulong flags = 0;
2496 
2497         if(pHba->host)
2498                 spin_lock_irqsave(pHba->host->host_lock, flags);
2499         if ((rcode=adpt_i2o_lct_get(pHba)) < 0)
2500                 goto out;
2501         if ((rcode=adpt_i2o_reparse_lct(pHba)) < 0)
2502                 goto out;
2503         rcode = 0;
2504 out:    if(pHba->host)
2505                 spin_unlock_irqrestore(pHba->host->host_lock, flags);
2506         return rcode;
2507 }
2508 
2509 
2510 static s32 adpt_i2o_reparse_lct(adpt_hba* pHba)
2511 {
2512         int i;
2513         int max;
2514         int tid;
2515         struct i2o_device *d;
2516         i2o_lct *lct = pHba->lct;
2517         u8 bus_no = 0;
2518         s16 scsi_id;
2519         u64 scsi_lun;
2520         u32 buf[10]; // at least 8 u32's
2521         struct adpt_device* pDev = NULL;
2522         struct i2o_device* pI2o_dev = NULL;
2523         
2524         if (lct == NULL) {
2525                 printk(KERN_ERR "%s: LCT is empty???\n",pHba->name);
2526                 return -1;
2527         }
2528         
2529         max = lct->table_size;  
2530         max -= 3;
2531         max /= 9;
2532 
2533         // Mark each drive as unscanned
2534         for (d = pHba->devices; d; d = d->next) {
2535                 pDev =(struct adpt_device*) d->owner;
2536                 if(!pDev){
2537                         continue;
2538                 }
2539                 pDev->state |= DPTI_DEV_UNSCANNED;
2540         }
2541 
2542         printk(KERN_INFO "%s: LCT has %d entries.\n", pHba->name,max);
2543         
2544         for(i=0;i<max;i++) {
2545                 if( lct->lct_entry[i].user_tid != 0xfff){
2546                         continue;
2547                 }
2548 
2549                 if( lct->lct_entry[i].class_id == I2O_CLASS_RANDOM_BLOCK_STORAGE ||
2550                     lct->lct_entry[i].class_id == I2O_CLASS_SCSI_PERIPHERAL ||
2551                     lct->lct_entry[i].class_id == I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL ){
2552                         tid = lct->lct_entry[i].tid;
2553                         if(adpt_i2o_query_scalar(pHba, tid, 0x8000, -1, buf, 32)<0) {
2554                                 printk(KERN_ERR"%s: Could not query device\n",pHba->name);
2555                                 continue;
2556                         }
2557                         bus_no = buf[0]>>16;
2558                         if (bus_no >= MAX_CHANNEL) {    /* Something wrong skip it */
2559                                 printk(KERN_WARNING
2560                                         "%s: Channel number %d out of range\n",
2561                                         pHba->name, bus_no);
2562                                 continue;
2563                         }
2564 
2565                         scsi_id = buf[1];
2566                         scsi_lun = scsilun_to_int((struct scsi_lun *)&buf[2]);
2567                         pDev = pHba->channel[bus_no].device[scsi_id];
2568                         /* da lun */
2569                         while(pDev) {
2570                                 if(pDev->scsi_lun == scsi_lun) {
2571                                         break;
2572                                 }
2573                                 pDev = pDev->next_lun;
2574                         }
2575                         if(!pDev ) { // Something new add it
2576                                 d = kmalloc(sizeof(struct i2o_device),
2577                                             GFP_ATOMIC);
2578                                 if(d==NULL)
2579                                 {
2580                                         printk(KERN_CRIT "Out of memory for I2O device data.\n");
2581                                         return -ENOMEM;
2582                                 }
2583                                 
2584                                 d->controller = pHba;
2585                                 d->next = NULL;
2586 
2587                                 memcpy(&d->lct_data, &lct->lct_entry[i], sizeof(i2o_lct_entry));
2588 
2589                                 d->flags = 0;
2590                                 adpt_i2o_report_hba_unit(pHba, d);
2591                                 adpt_i2o_install_device(pHba, d);
2592         
2593                                 pDev = pHba->channel[bus_no].device[scsi_id];   
2594                                 if( pDev == NULL){
2595                                         pDev =
2596                                           kzalloc(sizeof(struct adpt_device),
2597                                                   GFP_ATOMIC);
2598                                         if(pDev == NULL) {
2599                                                 return -ENOMEM;
2600                                         }
2601                                         pHba->channel[bus_no].device[scsi_id] = pDev;
2602                                 } else {
2603                                         while (pDev->next_lun) {
2604                                                 pDev = pDev->next_lun;
2605                                         }
2606                                         pDev = pDev->next_lun =
2607                                           kzalloc(sizeof(struct adpt_device),
2608                                                   GFP_ATOMIC);
2609                                         if(pDev == NULL) {
2610                                                 return -ENOMEM;
2611                                         }
2612                                 }
2613                                 pDev->tid = d->lct_data.tid;
2614                                 pDev->scsi_channel = bus_no;
2615                                 pDev->scsi_id = scsi_id;
2616                                 pDev->scsi_lun = scsi_lun;
2617                                 pDev->pI2o_dev = d;
2618                                 d->owner = pDev;
2619                                 pDev->type = (buf[0])&0xff;
2620                                 pDev->flags = (buf[0]>>8)&0xff;
2621                                 // Too late, SCSI system has made up it's mind, but what the hey ...
2622                                 if(scsi_id > pHba->top_scsi_id){
2623                                         pHba->top_scsi_id = scsi_id;
2624                                 }
2625                                 if(scsi_lun > pHba->top_scsi_lun){
2626                                         pHba->top_scsi_lun = scsi_lun;
2627                                 }
2628                                 continue;
2629                         } // end of new i2o device
2630 
2631                         // We found an old device - check it
2632                         while(pDev) {
2633                                 if(pDev->scsi_lun == scsi_lun) {
2634                                         if(!scsi_device_online(pDev->pScsi_dev)) {
2635                                                 printk(KERN_WARNING"%s: Setting device (%d,%d,%llu) back online\n",
2636                                                                 pHba->name,bus_no,scsi_id,scsi_lun);
2637                                                 if (pDev->pScsi_dev) {
2638                                                         scsi_device_set_state(pDev->pScsi_dev, SDEV_RUNNING);
2639                                                 }
2640                                         }
2641                                         d = pDev->pI2o_dev;
2642                                         if(d->lct_data.tid != tid) { // something changed
2643                                                 pDev->tid = tid;
2644                                                 memcpy(&d->lct_data, &lct->lct_entry[i], sizeof(i2o_lct_entry));
2645                                                 if (pDev->pScsi_dev) {
2646                                                         pDev->pScsi_dev->changed = TRUE;
2647                                                         pDev->pScsi_dev->removable = TRUE;
2648                                                 }
2649                                         }
2650                                         // Found it - mark it scanned
2651                                         pDev->state = DPTI_DEV_ONLINE;
2652                                         break;
2653                                 }
2654                                 pDev = pDev->next_lun;
2655                         }
2656                 }
2657         }
2658         for (pI2o_dev = pHba->devices; pI2o_dev; pI2o_dev = pI2o_dev->next) {
2659                 pDev =(struct adpt_device*) pI2o_dev->owner;
2660                 if(!pDev){
2661                         continue;
2662                 }
2663                 // Drive offline drives that previously existed but could not be found
2664                 // in the LCT table
2665                 if (pDev->state & DPTI_DEV_UNSCANNED){
2666                         pDev->state = DPTI_DEV_OFFLINE;
2667                         printk(KERN_WARNING"%s: Device (%d,%d,%llu) offline\n",pHba->name,pDev->scsi_channel,pDev->scsi_id,pDev->scsi_lun);
2668                         if (pDev->pScsi_dev) {
2669                                 scsi_device_set_state(pDev->pScsi_dev, SDEV_OFFLINE);
2670                         }
2671                 }
2672         }
2673         return 0;
2674 }
2675 
2676 static void adpt_fail_posted_scbs(adpt_hba* pHba)
2677 {
2678         struct scsi_cmnd*       cmd = NULL;
2679         struct scsi_device*     d = NULL;
2680 
2681         shost_for_each_device(d, pHba->host) {
2682                 unsigned long flags;
2683                 spin_lock_irqsave(&d->list_lock, flags);
2684                 list_for_each_entry(cmd, &d->cmd_list, list) {
2685                         if(cmd->serial_number == 0){
2686                                 continue;
2687                         }
2688                         cmd->result = (DID_OK << 16) | (QUEUE_FULL <<1);
2689                         cmd->scsi_done(cmd);
2690                 }
2691                 spin_unlock_irqrestore(&d->list_lock, flags);
2692         }
2693 }
2694 
2695 
2696 /*============================================================================
2697  *  Routines from i2o subsystem
2698  *============================================================================
2699  */
2700 
2701 
2702 
2703 /*
2704  *      Bring an I2O controller into HOLD state. See the spec.
2705  */
2706 static int adpt_i2o_activate_hba(adpt_hba* pHba)
2707 {
2708         int rcode;
2709 
2710         if(pHba->initialized ) {
2711                 if (adpt_i2o_status_get(pHba) < 0) {
2712                         if((rcode = adpt_i2o_reset_hba(pHba)) != 0){
2713                                 printk(KERN_WARNING"%s: Could NOT reset.\n", pHba->name);
2714                                 return rcode;
2715                         }
2716                         if (adpt_i2o_status_get(pHba) < 0) {
2717                                 printk(KERN_INFO "HBA not responding.\n");
2718                                 return -1;
2719                         }
2720                 }
2721 
2722                 if(pHba->status_block->iop_state == ADAPTER_STATE_FAULTED) {
2723                         printk(KERN_CRIT "%s: hardware fault\n", pHba->name);
2724                         return -1;
2725                 }
2726 
2727                 if (pHba->status_block->iop_state == ADAPTER_STATE_READY ||
2728                     pHba->status_block->iop_state == ADAPTER_STATE_OPERATIONAL ||
2729                     pHba->status_block->iop_state == ADAPTER_STATE_HOLD ||
2730                     pHba->status_block->iop_state == ADAPTER_STATE_FAILED) {
2731                         adpt_i2o_reset_hba(pHba);                       
2732                         if (adpt_i2o_status_get(pHba) < 0 || pHba->status_block->iop_state != ADAPTER_STATE_RESET) {
2733                                 printk(KERN_ERR "%s: Failed to initialize.\n", pHba->name);
2734                                 return -1;
2735                         }
2736                 }
2737         } else {
2738                 if((rcode = adpt_i2o_reset_hba(pHba)) != 0){
2739                         printk(KERN_WARNING"%s: Could NOT reset.\n", pHba->name);
2740                         return rcode;
2741                 }
2742 
2743         }
2744 
2745         if (adpt_i2o_init_outbound_q(pHba) < 0) {
2746                 return -1;
2747         }
2748 
2749         /* In HOLD state */
2750         
2751         if (adpt_i2o_hrt_get(pHba) < 0) {
2752                 return -1;
2753         }
2754 
2755         return 0;
2756 }
2757 
2758 /*
2759  *      Bring a controller online into OPERATIONAL state. 
2760  */
2761  
2762 static int adpt_i2o_online_hba(adpt_hba* pHba)
2763 {
2764         if (adpt_i2o_systab_send(pHba) < 0) {
2765                 adpt_i2o_delete_hba(pHba);
2766                 return -1;
2767         }
2768         /* In READY state */
2769 
2770         if (adpt_i2o_enable_hba(pHba) < 0) {
2771                 adpt_i2o_delete_hba(pHba);
2772                 return -1;
2773         }
2774 
2775         /* In OPERATIONAL state  */
2776         return 0;
2777 }
2778 
2779 static s32 adpt_send_nop(adpt_hba*pHba,u32 m)
2780 {
2781         u32 __iomem *msg;
2782         ulong timeout = jiffies + 5*HZ;
2783 
2784         while(m == EMPTY_QUEUE){
2785                 rmb();
2786                 m = readl(pHba->post_port);
2787                 if(m != EMPTY_QUEUE){
2788                         break;
2789                 }
2790                 if(time_after(jiffies,timeout)){
2791                         printk(KERN_ERR "%s: Timeout waiting for message frame!\n",pHba->name);
2792                         return 2;
2793                 }
2794                 schedule_timeout_uninterruptible(1);
2795         }
2796         msg = (u32 __iomem *)(pHba->msg_addr_virt + m);
2797         writel( THREE_WORD_MSG_SIZE | SGL_OFFSET_0,&msg[0]);
2798         writel( I2O_CMD_UTIL_NOP << 24 | HOST_TID << 12 | 0,&msg[1]);
2799         writel( 0,&msg[2]);
2800         wmb();
2801 
2802         writel(m, pHba->post_port);
2803         wmb();
2804         return 0;
2805 }
2806 
2807 static s32 adpt_i2o_init_outbound_q(adpt_hba* pHba)
2808 {
2809         u8 *status;
2810         dma_addr_t addr;
2811         u32 __iomem *msg = NULL;
2812         int i;
2813         ulong timeout = jiffies + TMOUT_INITOUTBOUND*HZ;
2814         u32 m;
2815 
2816         do {
2817                 rmb();
2818                 m = readl(pHba->post_port);
2819                 if (m != EMPTY_QUEUE) {
2820                         break;
2821                 }
2822 
2823                 if(time_after(jiffies,timeout)){
2824                         printk(KERN_WARNING"%s: Timeout waiting for message frame\n",pHba->name);
2825                         return -ETIMEDOUT;
2826                 }
2827                 schedule_timeout_uninterruptible(1);
2828         } while(m == EMPTY_QUEUE);
2829 
2830         msg=(u32 __iomem *)(pHba->msg_addr_virt+m);
2831 
2832         status = dma_alloc_coherent(&pHba->pDev->dev, 4, &addr, GFP_KERNEL);
2833         if (!status) {
2834                 adpt_send_nop(pHba, m);
2835                 printk(KERN_WARNING"%s: IOP reset failed - no free memory.\n",
2836                         pHba->name);
2837                 return -ENOMEM;
2838         }
2839         memset(status, 0, 4);
2840 
2841         writel(EIGHT_WORD_MSG_SIZE| SGL_OFFSET_6, &msg[0]);
2842         writel(I2O_CMD_OUTBOUND_INIT<<24 | HOST_TID<<12 | ADAPTER_TID, &msg[1]);
2843         writel(0, &msg[2]);
2844         writel(0x0106, &msg[3]);        /* Transaction context */
2845         writel(4096, &msg[4]);          /* Host page frame size */
2846         writel((REPLY_FRAME_SIZE)<<16|0x80, &msg[5]);   /* Outbound msg frame size and Initcode */
2847         writel(0xD0000004, &msg[6]);            /* Simple SG LE, EOB */
2848         writel((u32)addr, &msg[7]);
2849 
2850         writel(m, pHba->post_port);
2851         wmb();
2852 
2853         // Wait for the reply status to come back
2854         do {
2855                 if (*status) {
2856                         if (*status != 0x01 /*I2O_EXEC_OUTBOUND_INIT_IN_PROGRESS*/) {
2857                                 break;
2858                         }
2859                 }
2860                 rmb();
2861                 if(time_after(jiffies,timeout)){
2862                         printk(KERN_WARNING"%s: Timeout Initializing\n",pHba->name);
2863                         /* We lose 4 bytes of "status" here, but we
2864                            cannot free these because controller may
2865                            awake and corrupt those bytes at any time */
2866                         /* dma_free_coherent(&pHba->pDev->dev, 4, status, addr); */
2867                         return -ETIMEDOUT;
2868                 }
2869                 schedule_timeout_uninterruptible(1);
2870         } while (1);
2871 
2872         // If the command was successful, fill the fifo with our reply
2873         // message packets
2874         if(*status != 0x04 /*I2O_EXEC_OUTBOUND_INIT_COMPLETE*/) {
2875                 dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
2876                 return -2;
2877         }
2878         dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
2879 
2880         if(pHba->reply_pool != NULL) {
2881                 dma_free_coherent(&pHba->pDev->dev,
2882                         pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
2883                         pHba->reply_pool, pHba->reply_pool_pa);
2884         }
2885 
2886         pHba->reply_pool = dma_alloc_coherent(&pHba->pDev->dev,
2887                                 pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
2888                                 &pHba->reply_pool_pa, GFP_KERNEL);
2889         if (!pHba->reply_pool) {
2890                 printk(KERN_ERR "%s: Could not allocate reply pool\n", pHba->name);
2891                 return -ENOMEM;
2892         }
2893         memset(pHba->reply_pool, 0 , pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4);
2894 
2895         for(i = 0; i < pHba->reply_fifo_size; i++) {
2896                 writel(pHba->reply_pool_pa + (i * REPLY_FRAME_SIZE * 4),
2897                         pHba->reply_port);
2898                 wmb();
2899         }
2900         adpt_i2o_status_get(pHba);
2901         return 0;
2902 }
2903 
2904 
2905 /*
2906  * I2O System Table.  Contains information about
2907  * all the IOPs in the system.  Used to inform IOPs
2908  * about each other's existence.
2909  *
2910  * sys_tbl_ver is the CurrentChangeIndicator that is
2911  * used by IOPs to track changes.
2912  */
2913 
2914 
2915 
2916 static s32 adpt_i2o_status_get(adpt_hba* pHba)
2917 {
2918         ulong timeout;
2919         u32 m;
2920         u32 __iomem *msg;
2921         u8 *status_block=NULL;
2922 
2923         if(pHba->status_block == NULL) {
2924                 pHba->status_block = dma_alloc_coherent(&pHba->pDev->dev,
2925                                         sizeof(i2o_status_block),
2926                                         &pHba->status_block_pa, GFP_KERNEL);
2927                 if(pHba->status_block == NULL) {
2928                         printk(KERN_ERR
2929                         "dpti%d: Get Status Block failed; Out of memory. \n", 
2930                         pHba->unit);
2931                         return -ENOMEM;
2932                 }
2933         }
2934         memset(pHba->status_block, 0, sizeof(i2o_status_block));
2935         status_block = (u8*)(pHba->status_block);
2936         timeout = jiffies+TMOUT_GETSTATUS*HZ;
2937         do {
2938                 rmb();
2939                 m = readl(pHba->post_port);
2940                 if (m != EMPTY_QUEUE) {
2941                         break;
2942                 }
2943                 if(time_after(jiffies,timeout)){
2944                         printk(KERN_ERR "%s: Timeout waiting for message !\n",
2945                                         pHba->name);
2946                         return -ETIMEDOUT;
2947                 }
2948                 schedule_timeout_uninterruptible(1);
2949         } while(m==EMPTY_QUEUE);
2950 
2951         
2952         msg=(u32 __iomem *)(pHba->msg_addr_virt+m);
2953 
2954         writel(NINE_WORD_MSG_SIZE|SGL_OFFSET_0, &msg[0]);
2955         writel(I2O_CMD_STATUS_GET<<24|HOST_TID<<12|ADAPTER_TID, &msg[1]);
2956         writel(1, &msg[2]);
2957         writel(0, &msg[3]);
2958         writel(0, &msg[4]);
2959         writel(0, &msg[5]);
2960         writel( dma_low(pHba->status_block_pa), &msg[6]);
2961         writel( dma_high(pHba->status_block_pa), &msg[7]);
2962         writel(sizeof(i2o_status_block), &msg[8]); // 88 bytes
2963 
2964         //post message
2965         writel(m, pHba->post_port);
2966         wmb();
2967 
2968         while(status_block[87]!=0xff){
2969                 if(time_after(jiffies,timeout)){
2970                         printk(KERN_ERR"dpti%d: Get status timeout.\n",
2971                                 pHba->unit);
2972                         return -ETIMEDOUT;
2973                 }
2974                 rmb();
2975                 schedule_timeout_uninterruptible(1);
2976         }
2977 
2978         // Set up our number of outbound and inbound messages
2979         pHba->post_fifo_size = pHba->status_block->max_inbound_frames;
2980         if (pHba->post_fifo_size > MAX_TO_IOP_MESSAGES) {
2981                 pHba->post_fifo_size = MAX_TO_IOP_MESSAGES;
2982         }
2983 
2984         pHba->reply_fifo_size = pHba->status_block->max_outbound_frames;
2985         if (pHba->reply_fifo_size > MAX_FROM_IOP_MESSAGES) {
2986                 pHba->reply_fifo_size = MAX_FROM_IOP_MESSAGES;
2987         }
2988 
2989         // Calculate the Scatter Gather list size
2990         if (dpt_dma64(pHba)) {
2991                 pHba->sg_tablesize
2992                   = ((pHba->status_block->inbound_frame_size * 4
2993                   - 14 * sizeof(u32))
2994                   / (sizeof(struct sg_simple_element) + sizeof(u32)));
2995         } else {
2996                 pHba->sg_tablesize
2997                   = ((pHba->status_block->inbound_frame_size * 4
2998                   - 12 * sizeof(u32))
2999                   / sizeof(struct sg_simple_element));
3000         }
3001         if (pHba->sg_tablesize > SG_LIST_ELEMENTS) {
3002                 pHba->sg_tablesize = SG_LIST_ELEMENTS;
3003         }
3004 
3005 
3006 #ifdef DEBUG
3007         printk("dpti%d: State = ",pHba->unit);
3008         switch(pHba->status_block->iop_state) {
3009                 case 0x01:
3010                         printk("INIT\n");
3011                         break;
3012                 case 0x02:
3013                         printk("RESET\n");
3014                         break;
3015                 case 0x04:
3016                         printk("HOLD\n");
3017                         break;
3018                 case 0x05:
3019                         printk("READY\n");
3020                         break;
3021                 case 0x08:
3022                         printk("OPERATIONAL\n");
3023                         break;
3024                 case 0x10:
3025                         printk("FAILED\n");
3026                         break;
3027                 case 0x11:
3028                         printk("FAULTED\n");
3029                         break;
3030                 default:
3031                         printk("%x (unknown!!)\n",pHba->status_block->iop_state);
3032         }
3033 #endif
3034         return 0;
3035 }
3036 
3037 /*
3038  * Get the IOP's Logical Configuration Table
3039  */
3040 static int adpt_i2o_lct_get(adpt_hba* pHba)
3041 {
3042         u32 msg[8];
3043         int ret;
3044         u32 buf[16];
3045 
3046         if ((pHba->lct_size == 0) || (pHba->lct == NULL)){
3047                 pHba->lct_size = pHba->status_block->expected_lct_size;
3048         }
3049         do {
3050                 if (pHba->lct == NULL) {
3051                         pHba->lct = dma_alloc_coherent(&pHba->pDev->dev,
3052                                         pHba->lct_size, &pHba->lct_pa,
3053                                         GFP_ATOMIC);
3054                         if(pHba->lct == NULL) {
3055                                 printk(KERN_CRIT "%s: Lct Get failed. Out of memory.\n",
3056                                         pHba->name);
3057                                 return -ENOMEM;
3058                         }
3059                 }
3060                 memset(pHba->lct, 0, pHba->lct_size);
3061 
3062                 msg[0] = EIGHT_WORD_MSG_SIZE|SGL_OFFSET_6;
3063                 msg[1] = I2O_CMD_LCT_NOTIFY<<24 | HOST_TID<<12 | ADAPTER_TID;
3064                 msg[2] = 0;
3065                 msg[3] = 0;
3066                 msg[4] = 0xFFFFFFFF;    /* All devices */
3067                 msg[5] = 0x00000000;    /* Report now */
3068                 msg[6] = 0xD0000000|pHba->lct_size;
3069                 msg[7] = (u32)pHba->lct_pa;
3070 
3071                 if ((ret=adpt_i2o_post_wait(pHba, msg, sizeof(msg), 360))) {
3072                         printk(KERN_ERR "%s: LCT Get failed (status=%#10x.\n", 
3073                                 pHba->name, ret);       
3074                         printk(KERN_ERR"Adaptec: Error Reading Hardware.\n");
3075                         return ret;
3076                 }
3077 
3078                 if ((pHba->lct->table_size << 2) > pHba->lct_size) {
3079                         pHba->lct_size = pHba->lct->table_size << 2;
3080                         dma_free_coherent(&pHba->pDev->dev, pHba->lct_size,
3081                                         pHba->lct, pHba->lct_pa);
3082                         pHba->lct = NULL;
3083                 }
3084         } while (pHba->lct == NULL);
3085 
3086         PDEBUG("%s: Hardware resource table read.\n", pHba->name);
3087 
3088 
3089         // I2O_DPT_EXEC_IOP_BUFFERS_GROUP_NO;
3090         if(adpt_i2o_query_scalar(pHba, 0 , 0x8000, -1, buf, sizeof(buf))>=0) {
3091                 pHba->FwDebugBufferSize = buf[1];
3092                 pHba->FwDebugBuffer_P = ioremap(pHba->base_addr_phys + buf[0],
3093                                                 pHba->FwDebugBufferSize);
3094                 if (pHba->FwDebugBuffer_P) {
3095                         pHba->FwDebugFlags_P     = pHba->FwDebugBuffer_P +
3096                                                         FW_DEBUG_FLAGS_OFFSET;
3097                         pHba->FwDebugBLEDvalue_P = pHba->FwDebugBuffer_P +
3098                                                         FW_DEBUG_BLED_OFFSET;
3099                         pHba->FwDebugBLEDflag_P  = pHba->FwDebugBLEDvalue_P + 1;
3100                         pHba->FwDebugStrLength_P = pHba->FwDebugBuffer_P +
3101                                                 FW_DEBUG_STR_LENGTH_OFFSET;
3102                         pHba->FwDebugBuffer_P += buf[2]; 
3103                         pHba->FwDebugFlags = 0;
3104                 }
3105         }
3106 
3107         return 0;
3108 }
3109 
3110 static int adpt_i2o_build_sys_table(void)
3111 {
3112         adpt_hba* pHba = hba_chain;
3113         int count = 0;
3114 
3115         if (sys_tbl)
3116                 dma_free_coherent(&pHba->pDev->dev, sys_tbl_len,
3117                                         sys_tbl, sys_tbl_pa);
3118 
3119         sys_tbl_len = sizeof(struct i2o_sys_tbl) +      // Header + IOPs
3120                                 (hba_count) * sizeof(struct i2o_sys_tbl_entry);
3121 
3122         sys_tbl = dma_alloc_coherent(&pHba->pDev->dev,
3123                                 sys_tbl_len, &sys_tbl_pa, GFP_KERNEL);
3124         if (!sys_tbl) {
3125                 printk(KERN_WARNING "SysTab Set failed. Out of memory.\n");     
3126                 return -ENOMEM;
3127         }
3128         memset(sys_tbl, 0, sys_tbl_len);
3129 
3130         sys_tbl->num_entries = hba_count;
3131         sys_tbl->version = I2OVERSION;
3132         sys_tbl->change_ind = sys_tbl_ind++;
3133 
3134         for(pHba = hba_chain; pHba; pHba = pHba->next) {
3135                 u64 addr;
3136                 // Get updated Status Block so we have the latest information
3137                 if (adpt_i2o_status_get(pHba)) {
3138                         sys_tbl->num_entries--;
3139                         continue; // try next one       
3140                 }
3141 
3142                 sys_tbl->iops[count].org_id = pHba->status_block->org_id;
3143                 sys_tbl->iops[count].iop_id = pHba->unit + 2;
3144                 sys_tbl->iops[count].seg_num = 0;
3145                 sys_tbl->iops[count].i2o_version = pHba->status_block->i2o_version;
3146                 sys_tbl->iops[count].iop_state = pHba->status_block->iop_state;
3147                 sys_tbl->iops[count].msg_type = pHba->status_block->msg_type;
3148                 sys_tbl->iops[count].frame_size = pHba->status_block->inbound_frame_size;
3149                 sys_tbl->iops[count].last_changed = sys_tbl_ind - 1; // ??
3150                 sys_tbl->iops[count].iop_capabilities = pHba->status_block->iop_capabilities;
3151                 addr = pHba->base_addr_phys + 0x40;
3152                 sys_tbl->iops[count].inbound_low = dma_low(addr);
3153                 sys_tbl->iops[count].inbound_high = dma_high(addr);
3154 
3155                 count++;
3156         }
3157 
3158 #ifdef DEBUG
3159 {
3160         u32 *table = (u32*)sys_tbl;
3161         printk(KERN_DEBUG"sys_tbl_len=%d in 32bit words\n",(sys_tbl_len >>2));
3162         for(count = 0; count < (sys_tbl_len >>2); count++) {
3163                 printk(KERN_INFO "sys_tbl[%d] = %0#10x\n", 
3164                         count, table[count]);
3165         }
3166 }
3167 #endif
3168 
3169         return 0;
3170 }
3171 
3172 
3173 /*
3174  *       Dump the information block associated with a given unit (TID)
3175  */
3176  
3177 static void adpt_i2o_report_hba_unit(adpt_hba* pHba, struct i2o_device *d)
3178 {
3179         char buf[64];
3180         int unit = d->lct_data.tid;
3181 
3182         printk(KERN_INFO "TID %3.3d ", unit);
3183 
3184         if(adpt_i2o_query_scalar(pHba, unit, 0xF100, 3, buf, 16)>=0)
3185         {
3186                 buf[16]=0;
3187                 printk(" Vendor: %-12.12s", buf);
3188         }
3189         if(adpt_i2o_query_scalar(pHba, unit, 0xF100, 4, buf, 16)>=0)
3190         {
3191                 buf[16]=0;
3192                 printk(" Device: %-12.12s", buf);
3193         }
3194         if(adpt_i2o_query_scalar(pHba, unit, 0xF100, 6, buf, 8)>=0)
3195         {
3196                 buf[8]=0;
3197                 printk(" Rev: %-12.12s\n", buf);
3198         }
3199 #ifdef DEBUG
3200          printk(KERN_INFO "\tClass: %.21s\n", adpt_i2o_get_class_name(d->lct_data.class_id));
3201          printk(KERN_INFO "\tSubclass: 0x%04X\n", d->lct_data.sub_class);
3202          printk(KERN_INFO "\tFlags: ");
3203 
3204          if(d->lct_data.device_flags&(1<<0))
3205                   printk("C");       // ConfigDialog requested
3206          if(d->lct_data.device_flags&(1<<1))
3207                   printk("U");       // Multi-user capable
3208          if(!(d->lct_data.device_flags&(1<<4)))
3209                   printk("P");       // Peer service enabled!
3210          if(!(d->lct_data.device_flags&(1<<5)))
3211                   printk("M");       // Mgmt service enabled!
3212          printk("\n");
3213 #endif
3214 }
3215 
3216 #ifdef DEBUG
3217 /*
3218  *      Do i2o class name lookup
3219  */
3220 static const char *adpt_i2o_get_class_name(int class)
3221 {
3222         int idx = 16;
3223         static char *i2o_class_name[] = {
3224                 "Executive",
3225                 "Device Driver Module",
3226                 "Block Device",
3227                 "Tape Device",
3228                 "LAN Interface",
3229                 "WAN Interface",
3230                 "Fibre Channel Port",
3231                 "Fibre Channel Device",
3232                 "SCSI Device",
3233                 "ATE Port",
3234                 "ATE Device",
3235                 "Floppy Controller",
3236                 "Floppy Device",
3237                 "Secondary Bus Port",
3238                 "Peer Transport Agent",
3239                 "Peer Transport",
3240                 "Unknown"
3241         };
3242         
3243         switch(class&0xFFF) {
3244         case I2O_CLASS_EXECUTIVE:
3245                 idx = 0; break;
3246         case I2O_CLASS_DDM:
3247                 idx = 1; break;
3248         case I2O_CLASS_RANDOM_BLOCK_STORAGE:
3249                 idx = 2; break;
3250         case I2O_CLASS_SEQUENTIAL_STORAGE:
3251                 idx = 3; break;
3252         case I2O_CLASS_LAN:
3253                 idx = 4; break;
3254         case I2O_CLASS_WAN:
3255                 idx = 5; break;
3256         case I2O_CLASS_FIBRE_CHANNEL_PORT:
3257                 idx = 6; break;
3258         case I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL:
3259                 idx = 7; break;
3260         case I2O_CLASS_SCSI_PERIPHERAL:
3261                 idx = 8; break;
3262         case I2O_CLASS_ATE_PORT:
3263                 idx = 9; break;
3264         case I2O_CLASS_ATE_PERIPHERAL:
3265                 idx = 10; break;
3266         case I2O_CLASS_FLOPPY_CONTROLLER:
3267                 idx = 11; break;
3268         case I2O_CLASS_FLOPPY_DEVICE:
3269                 idx = 12; break;
3270         case I2O_CLASS_BUS_ADAPTER_PORT:
3271                 idx = 13; break;
3272         case I2O_CLASS_PEER_TRANSPORT_AGENT:
3273                 idx = 14; break;
3274         case I2O_CLASS_PEER_TRANSPORT:
3275                 idx = 15; break;
3276         }
3277         return i2o_class_name[idx];
3278 }
3279 #endif
3280 
3281 
3282 static s32 adpt_i2o_hrt_get(adpt_hba* pHba)
3283 {
3284         u32 msg[6];
3285         int ret, size = sizeof(i2o_hrt);
3286 
3287         do {
3288                 if (pHba->hrt == NULL) {
3289                         pHba->hrt = dma_alloc_coherent(&pHba->pDev->dev,
3290                                         size, &pHba->hrt_pa, GFP_KERNEL);
3291                         if (pHba->hrt == NULL) {
3292                                 printk(KERN_CRIT "%s: Hrt Get failed; Out of memory.\n", pHba->name);
3293                                 return -ENOMEM;
3294                         }
3295                 }
3296 
3297                 msg[0]= SIX_WORD_MSG_SIZE| SGL_OFFSET_4;
3298                 msg[1]= I2O_CMD_HRT_GET<<24 | HOST_TID<<12 | ADAPTER_TID;
3299                 msg[2]= 0;
3300                 msg[3]= 0;
3301                 msg[4]= (0xD0000000 | size);    /* Simple transaction */
3302                 msg[5]= (u32)pHba->hrt_pa;      /* Dump it here */
3303 
3304                 if ((ret = adpt_i2o_post_wait(pHba, msg, sizeof(msg),20))) {
3305                         printk(KERN_ERR "%s: Unable to get HRT (status=%#10x)\n", pHba->name, ret);
3306                         return ret;
3307                 }
3308 
3309                 if (pHba->hrt->num_entries * pHba->hrt->entry_len << 2 > size) {
3310                         int newsize = pHba->hrt->num_entries * pHba->hrt->entry_len << 2;
3311                         dma_free_coherent(&pHba->pDev->dev, size,
3312                                 pHba->hrt, pHba->hrt_pa);
3313                         size = newsize;
3314                         pHba->hrt = NULL;
3315                 }
3316         } while(pHba->hrt == NULL);
3317         return 0;
3318 }                                                                                                                                       
3319 
3320 /*
3321  *       Query one scalar group value or a whole scalar group.
3322  */                     
3323 static int adpt_i2o_query_scalar(adpt_hba* pHba, int tid, 
3324                         int group, int field, void *buf, int buflen)
3325 {
3326         u16 opblk[] = { 1, 0, I2O_PARAMS_FIELD_GET, group, 1, field };
3327         u8 *opblk_va;
3328         dma_addr_t opblk_pa;
3329         u8 *resblk_va;
3330         dma_addr_t resblk_pa;
3331 
3332         int size;
3333 
3334         /* 8 bytes for header */
3335         resblk_va = dma_alloc_coherent(&pHba->pDev->dev,
3336                         sizeof(u8) * (8 + buflen), &resblk_pa, GFP_KERNEL);
3337         if (resblk_va == NULL) {
3338                 printk(KERN_CRIT "%s: query scalar failed; Out of memory.\n", pHba->name);
3339                 return -ENOMEM;
3340         }
3341 
3342         opblk_va = dma_alloc_coherent(&pHba->pDev->dev,
3343                         sizeof(opblk), &opblk_pa, GFP_KERNEL);
3344         if (opblk_va == NULL) {
3345                 dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
3346                         resblk_va, resblk_pa);
3347                 printk(KERN_CRIT "%s: query operatio failed; Out of memory.\n",
3348                         pHba->name);
3349                 return -ENOMEM;
3350         }
3351         if (field == -1)                /* whole group */
3352                         opblk[4] = -1;
3353 
3354         memcpy(opblk_va, opblk, sizeof(opblk));
3355         size = adpt_i2o_issue_params(I2O_CMD_UTIL_PARAMS_GET, pHba, tid, 
3356                 opblk_va, opblk_pa, sizeof(opblk),
3357                 resblk_va, resblk_pa, sizeof(u8)*(8+buflen));
3358         dma_free_coherent(&pHba->pDev->dev, sizeof(opblk), opblk_va, opblk_pa);
3359         if (size == -ETIME) {
3360                 dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
3361                                                         resblk_va, resblk_pa);
3362                 printk(KERN_WARNING "%s: issue params failed; Timed out.\n", pHba->name);
3363                 return -ETIME;
3364         } else if (size == -EINTR) {
3365                 dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
3366                                                         resblk_va, resblk_pa);
3367                 printk(KERN_WARNING "%s: issue params failed; Interrupted.\n", pHba->name);
3368                 return -EINTR;
3369         }
3370                         
3371         memcpy(buf, resblk_va+8, buflen);  /* cut off header */
3372 
3373         dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
3374                                                 resblk_va, resblk_pa);
3375         if (size < 0)
3376                 return size;    
3377 
3378         return buflen;
3379 }
3380 
3381 
3382 /*      Issue UTIL_PARAMS_GET or UTIL_PARAMS_SET
3383  *
3384  *      This function can be used for all UtilParamsGet/Set operations.
3385  *      The OperationBlock is given in opblk-buffer, 
3386  *      and results are returned in resblk-buffer.
3387  *      Note that the minimum sized resblk is 8 bytes and contains
3388  *      ResultCount, ErrorInfoSize, BlockStatus and BlockSize.
3389  */
3390 static int adpt_i2o_issue_params(int cmd, adpt_hba* pHba, int tid, 
3391                   void *opblk_va,  dma_addr_t opblk_pa, int oplen,
3392                 void *resblk_va, dma_addr_t resblk_pa, int reslen)
3393 {
3394         u32 msg[9]; 
3395         u32 *res = (u32 *)resblk_va;
3396         int wait_status;
3397 
3398         msg[0] = NINE_WORD_MSG_SIZE | SGL_OFFSET_5;
3399         msg[1] = cmd << 24 | HOST_TID << 12 | tid; 
3400         msg[2] = 0;
3401         msg[3] = 0;
3402         msg[4] = 0;
3403         msg[5] = 0x54000000 | oplen;    /* OperationBlock */
3404         msg[6] = (u32)opblk_pa;
3405         msg[7] = 0xD0000000 | reslen;   /* ResultBlock */
3406         msg[8] = (u32)resblk_pa;
3407 
3408         if ((wait_status = adpt_i2o_post_wait(pHba, msg, sizeof(msg), 20))) {
3409                 printk("adpt_i2o_issue_params: post_wait failed (%p)\n", resblk_va);
3410                 return wait_status;     /* -DetailedStatus */
3411         }
3412 
3413         if (res[1]&0x00FF0000) {        /* BlockStatus != SUCCESS */
3414                 printk(KERN_WARNING "%s: %s - Error:\n  ErrorInfoSize = 0x%02x, "
3415                         "BlockStatus = 0x%02x, BlockSize = 0x%04x\n",
3416                         pHba->name,
3417                         (cmd == I2O_CMD_UTIL_PARAMS_SET) ? "PARAMS_SET"
3418                                                          : "PARAMS_GET",   
3419                         res[1]>>24, (res[1]>>16)&0xFF, res[1]&0xFFFF);
3420                 return -((res[1] >> 16) & 0xFF); /* -BlockStatus */
3421         }
3422 
3423          return 4 + ((res[1] & 0x0000FFFF) << 2); /* bytes used in resblk */ 
3424 }
3425 
3426 
3427 static s32 adpt_i2o_quiesce_hba(adpt_hba* pHba)
3428 {
3429         u32 msg[4];
3430         int ret;
3431 
3432         adpt_i2o_status_get(pHba);
3433 
3434         /* SysQuiesce discarded if IOP not in READY or OPERATIONAL state */
3435 
3436         if((pHba->status_block->iop_state != ADAPTER_STATE_READY) &&
3437            (pHba->status_block->iop_state != ADAPTER_STATE_OPERATIONAL)){
3438                 return 0;
3439         }
3440 
3441         msg[0] = FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
3442         msg[1] = I2O_CMD_SYS_QUIESCE<<24|HOST_TID<<12|ADAPTER_TID;
3443         msg[2] = 0;
3444         msg[3] = 0;
3445 
3446         if((ret = adpt_i2o_post_wait(pHba, msg, sizeof(msg), 240))) {
3447                 printk(KERN_INFO"dpti%d: Unable to quiesce (status=%#x).\n",
3448                                 pHba->unit, -ret);
3449         } else {
3450                 printk(KERN_INFO"dpti%d: Quiesced.\n",pHba->unit);
3451         }
3452 
3453         adpt_i2o_status_get(pHba);
3454         return ret;
3455 }
3456 
3457 
3458 /* 
3459  * Enable IOP. Allows the IOP to resume external operations.
3460  */
3461 static int adpt_i2o_enable_hba(adpt_hba* pHba)
3462 {
3463         u32 msg[4];
3464         int ret;
3465         
3466         adpt_i2o_status_get(pHba);
3467         if(!pHba->status_block){
3468                 return -ENOMEM;
3469         }
3470         /* Enable only allowed on READY state */
3471         if(pHba->status_block->iop_state == ADAPTER_STATE_OPERATIONAL)
3472                 return 0;
3473 
3474         if(pHba->status_block->iop_state != ADAPTER_STATE_READY)
3475                 return -EINVAL;
3476 
3477         msg[0]=FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
3478         msg[1]=I2O_CMD_SYS_ENABLE<<24|HOST_TID<<12|ADAPTER_TID;
3479         msg[2]= 0;
3480         msg[3]= 0;
3481 
3482         if ((ret = adpt_i2o_post_wait(pHba, msg, sizeof(msg), 240))) {
3483                 printk(KERN_WARNING"%s: Could not enable (status=%#10x).\n", 
3484                         pHba->name, ret);
3485         } else {
3486                 PDEBUG("%s: Enabled.\n", pHba->name);
3487         }
3488 
3489         adpt_i2o_status_get(pHba);
3490         return ret;
3491 }
3492 
3493 
3494 static int adpt_i2o_systab_send(adpt_hba* pHba)
3495 {
3496          u32 msg[12];
3497          int ret;
3498 
3499         msg[0] = I2O_MESSAGE_SIZE(12) | SGL_OFFSET_6;
3500         msg[1] = I2O_CMD_SYS_TAB_SET<<24 | HOST_TID<<12 | ADAPTER_TID;
3501         msg[2] = 0;
3502         msg[3] = 0;
3503         msg[4] = (0<<16) | ((pHba->unit+2) << 12); /* Host 0 IOP ID (unit + 2) */
3504         msg[5] = 0;                                /* Segment 0 */
3505 
3506         /* 
3507          * Provide three SGL-elements:
3508          * System table (SysTab), Private memory space declaration and 
3509          * Private i/o space declaration  
3510          */
3511         msg[6] = 0x54000000 | sys_tbl_len;
3512         msg[7] = (u32)sys_tbl_pa;
3513         msg[8] = 0x54000000 | 0;
3514         msg[9] = 0;
3515         msg[10] = 0xD4000000 | 0;
3516         msg[11] = 0;
3517 
3518         if ((ret=adpt_i2o_post_wait(pHba, msg, sizeof(msg), 120))) {
3519                 printk(KERN_INFO "%s: Unable to set SysTab (status=%#10x).\n", 
3520                         pHba->name, ret);
3521         }
3522 #ifdef DEBUG
3523         else {
3524                 PINFO("%s: SysTab set.\n", pHba->name);
3525         }
3526 #endif
3527 
3528         return ret;     
3529  }
3530 
3531 
3532 /*============================================================================
3533  *
3534  *============================================================================
3535  */
3536 
3537 
3538 #ifdef UARTDELAY 
3539 
3540 static static void adpt_delay(int millisec)
3541 {
3542         int i;
3543         for (i = 0; i < millisec; i++) {
3544                 udelay(1000);   /* delay for one millisecond */
3545         }
3546 }
3547 
3548 #endif
3549 
3550 static struct scsi_host_template driver_template = {
3551         .module                 = THIS_MODULE,
3552         .name                   = "dpt_i2o",
3553         .proc_name              = "dpt_i2o",
3554         .show_info              = adpt_show_info,
3555         .info                   = adpt_info,
3556         .queuecommand           = adpt_queue,
3557         .eh_abort_handler       = adpt_abort,
3558         .eh_device_reset_handler = adpt_device_reset,
3559         .eh_bus_reset_handler   = adpt_bus_reset,
3560         .eh_host_reset_handler  = adpt_reset,
3561         .bios_param             = adpt_bios_param,
3562         .slave_configure        = adpt_slave_configure,
3563         .can_queue              = MAX_TO_IOP_MESSAGES,
3564         .this_id                = 7,
3565         .cmd_per_lun            = 1,
3566         .use_clustering         = ENABLE_CLUSTERING,
3567 };
3568 
3569 static int __init adpt_init(void)
3570 {
3571         int             error;
3572         adpt_hba        *pHba, *next;
3573 
3574         printk("Loading Adaptec I2O RAID: Version " DPT_I2O_VERSION "\n");
3575 
3576         error = adpt_detect(&driver_template);
3577         if (error < 0)
3578                 return error;
3579         if (hba_chain == NULL)
3580                 return -ENODEV;
3581 
3582         for (pHba = hba_chain; pHba; pHba = pHba->next) {
3583                 error = scsi_add_host(pHba->host, &pHba->pDev->dev);
3584                 if (error)
3585                         goto fail;
3586                 scsi_scan_host(pHba->host);
3587         }
3588         return 0;
3589 fail:
3590         for (pHba = hba_chain; pHba; pHba = next) {
3591                 next = pHba->next;
3592                 scsi_remove_host(pHba->host);
3593         }
3594         return error;
3595 }
3596 
3597 static void __exit adpt_exit(void)
3598 {
3599         adpt_hba        *pHba, *next;
3600 
3601         for (pHba = hba_chain; pHba; pHba = pHba->next)
3602                 scsi_remove_host(pHba->host);
3603         for (pHba = hba_chain; pHba; pHba = next) {
3604                 next = pHba->next;
3605                 adpt_release(pHba->host);
3606         }
3607 }
3608 
3609 module_init(adpt_init);
3610 module_exit(adpt_exit);
3611 
3612 MODULE_LICENSE("GPL");
3613 

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