[SCSI] megaraid_sas: Fix FastPath I/O to work on degraded raid 1
[linux-2.6.git] / 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_adjust_queue_depth(device, MSG_SIMPLE_TAG,
419                                 host->can_queue - 1);
420         } else {
421                 scsi_adjust_queue_depth(device, 0, 1);
422         }
423         return 0;
424 }
425
426 static int adpt_queue_lck(struct scsi_cmnd * cmd, void (*done) (struct scsi_cmnd *))
427 {
428         adpt_hba* pHba = NULL;
429         struct adpt_device* pDev = NULL;        /* dpt per device information */
430
431         cmd->scsi_done = done;
432         /*
433          * SCSI REQUEST_SENSE commands will be executed automatically by the 
434          * Host Adapter for any errors, so they should not be executed 
435          * explicitly unless the Sense Data is zero indicating that no error 
436          * occurred.
437          */
438
439         if ((cmd->cmnd[0] == REQUEST_SENSE) && (cmd->sense_buffer[0] != 0)) {
440                 cmd->result = (DID_OK << 16);
441                 cmd->scsi_done(cmd);
442                 return 0;
443         }
444
445         pHba = (adpt_hba*)cmd->device->host->hostdata[0];
446         if (!pHba) {
447                 return FAILED;
448         }
449
450         rmb();
451         /*
452          * TODO: I need to block here if I am processing ioctl cmds
453          * but if the outstanding cmds all finish before the ioctl,
454          * the scsi-core will not know to start sending cmds to me again.
455          * I need to a way to restart the scsi-cores queues or should I block
456          * calling scsi_done on the outstanding cmds instead
457          * for now we don't set the IOCTL state
458          */
459         if(((pHba->state) & DPTI_STATE_IOCTL) || ((pHba->state) & DPTI_STATE_RESET)) {
460                 pHba->host->last_reset = jiffies;
461                 pHba->host->resetting = 1;
462                 return 1;
463         }
464
465         // TODO if the cmd->device if offline then I may need to issue a bus rescan
466         // followed by a get_lct to see if the device is there anymore
467         if((pDev = (struct adpt_device*) (cmd->device->hostdata)) == NULL) {
468                 /*
469                  * First command request for this device.  Set up a pointer
470                  * to the device structure.  This should be a TEST_UNIT_READY
471                  * command from scan_scsis_single.
472                  */
473                 if ((pDev = adpt_find_device(pHba, (u32)cmd->device->channel, (u32)cmd->device->id, (u32)cmd->device->lun)) == NULL) {
474                         // TODO: if any luns are at this bus, scsi id then fake a TEST_UNIT_READY and INQUIRY response 
475                         // with type 7F (for all luns less than the max for this bus,id) so the lun scan will continue.
476                         cmd->result = (DID_NO_CONNECT << 16);
477                         cmd->scsi_done(cmd);
478                         return 0;
479                 }
480                 cmd->device->hostdata = pDev;
481         }
482         pDev->pScsi_dev = cmd->device;
483
484         /*
485          * If we are being called from when the device is being reset, 
486          * delay processing of the command until later.
487          */
488         if (pDev->state & DPTI_DEV_RESET ) {
489                 return FAILED;
490         }
491         return adpt_scsi_to_i2o(pHba, cmd, pDev);
492 }
493
494 static DEF_SCSI_QCMD(adpt_queue)
495
496 static int adpt_bios_param(struct scsi_device *sdev, struct block_device *dev,
497                 sector_t capacity, int geom[])
498 {
499         int heads=-1;
500         int sectors=-1;
501         int cylinders=-1;
502
503         // *** First lets set the default geometry ****
504         
505         // If the capacity is less than ox2000
506         if (capacity < 0x2000 ) {       // floppy
507                 heads = 18;
508                 sectors = 2;
509         } 
510         // else if between 0x2000 and 0x20000
511         else if (capacity < 0x20000) {
512                 heads = 64;
513                 sectors = 32;
514         }
515         // else if between 0x20000 and 0x40000
516         else if (capacity < 0x40000) {
517                 heads = 65;
518                 sectors = 63;
519         }
520         // else if between 0x4000 and 0x80000
521         else if (capacity < 0x80000) {
522                 heads = 128;
523                 sectors = 63;
524         }
525         // else if greater than 0x80000
526         else {
527                 heads = 255;
528                 sectors = 63;
529         }
530         cylinders = sector_div(capacity, heads * sectors);
531
532         // Special case if CDROM
533         if(sdev->type == 5) {  // CDROM
534                 heads = 252;
535                 sectors = 63;
536                 cylinders = 1111;
537         }
538
539         geom[0] = heads;
540         geom[1] = sectors;
541         geom[2] = cylinders;
542         
543         PDEBUG("adpt_bios_param: exit\n");
544         return 0;
545 }
546
547
548 static const char *adpt_info(struct Scsi_Host *host)
549 {
550         adpt_hba* pHba;
551
552         pHba = (adpt_hba *) host->hostdata[0];
553         return (char *) (pHba->detail);
554 }
555
556 static int adpt_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset,
557                   int length, int inout)
558 {
559         struct adpt_device* d;
560         int id;
561         int chan;
562         int len = 0;
563         int begin = 0;
564         int pos = 0;
565         adpt_hba* pHba;
566         int unit;
567
568         *start = buffer;
569         if (inout == TRUE) {
570                 /*
571                  * The user has done a write and wants us to take the
572                  * data in the buffer and do something with it.
573                  * proc_scsiwrite calls us with inout = 1
574                  *
575                  * Read data from buffer (writing to us) - NOT SUPPORTED
576                  */
577                 return -EINVAL;
578         }
579
580         /*
581          * inout = 0 means the user has done a read and wants information
582          * returned, so we write information about the cards into the buffer
583          * proc_scsiread() calls us with inout = 0
584          */
585
586         // Find HBA (host bus adapter) we are looking for
587         mutex_lock(&adpt_configuration_lock);
588         for (pHba = hba_chain; pHba; pHba = pHba->next) {
589                 if (pHba->host == host) {
590                         break;  /* found adapter */
591                 }
592         }
593         mutex_unlock(&adpt_configuration_lock);
594         if (pHba == NULL) {
595                 return 0;
596         }
597         host = pHba->host;
598
599         len  = sprintf(buffer    , "Adaptec I2O RAID Driver Version: %s\n\n", DPT_I2O_VERSION);
600         len += sprintf(buffer+len, "%s\n", pHba->detail);
601         len += sprintf(buffer+len, "SCSI Host=scsi%d  Control Node=/dev/%s  irq=%d\n", 
602                         pHba->host->host_no, pHba->name, host->irq);
603         len += sprintf(buffer+len, "\tpost fifo size  = %d\n\treply fifo size = %d\n\tsg table size   = %d\n\n",
604                         host->can_queue, (int) pHba->reply_fifo_size , host->sg_tablesize);
605
606         pos = begin + len;
607
608         /* CHECKPOINT */
609         if(pos > offset + length) {
610                 goto stop_output;
611         }
612         if(pos <= offset) {
613                 /*
614                  * If we haven't even written to where we last left
615                  * off (the last time we were called), reset the 
616                  * beginning pointer.
617                  */
618                 len = 0;
619                 begin = pos;
620         }
621         len +=  sprintf(buffer+len, "Devices:\n");
622         for(chan = 0; chan < MAX_CHANNEL; chan++) {
623                 for(id = 0; id < MAX_ID; id++) {
624                         d = pHba->channel[chan].device[id];
625                         while(d){
626                                 len += sprintf(buffer+len,"\t%-24.24s", d->pScsi_dev->vendor);
627                                 len += sprintf(buffer+len," Rev: %-8.8s\n", d->pScsi_dev->rev);
628                                 pos = begin + len;
629
630
631                                 /* CHECKPOINT */
632                                 if(pos > offset + length) {
633                                         goto stop_output;
634                                 }
635                                 if(pos <= offset) {
636                                         len = 0;
637                                         begin = pos;
638                                 }
639
640                                 unit = d->pI2o_dev->lct_data.tid;
641                                 len += sprintf(buffer+len, "\tTID=%d, (Channel=%d, Target=%d, Lun=%d)  (%s)\n\n",
642                                                unit, (int)d->scsi_channel, (int)d->scsi_id, (int)d->scsi_lun,
643                                                scsi_device_online(d->pScsi_dev)? "online":"offline"); 
644                                 pos = begin + len;
645
646                                 /* CHECKPOINT */
647                                 if(pos > offset + length) {
648                                         goto stop_output;
649                                 }
650                                 if(pos <= offset) {
651                                         len = 0;
652                                         begin = pos;
653                                 }
654
655                                 d = d->next_lun;
656                         }
657                 }
658         }
659
660         /*
661          * begin is where we last checked our position with regards to offset
662          * begin is always less than offset.  len is relative to begin.  It
663          * is the number of bytes written past begin
664          *
665          */
666 stop_output:
667         /* stop the output and calculate the correct length */
668         *(buffer + len) = '\0';
669
670         *start = buffer + (offset - begin);     /* Start of wanted data */
671         len -= (offset - begin);
672         if(len > length) {
673                 len = length;
674         } else if(len < 0){
675                 len = 0;
676                 **start = '\0';
677         }
678         return len;
679 }
680
681 /*
682  *      Turn a struct scsi_cmnd * into a unique 32 bit 'context'.
683  */
684 static u32 adpt_cmd_to_context(struct scsi_cmnd *cmd)
685 {
686         return (u32)cmd->serial_number;
687 }
688
689 /*
690  *      Go from a u32 'context' to a struct scsi_cmnd * .
691  *      This could probably be made more efficient.
692  */
693 static struct scsi_cmnd *
694         adpt_cmd_from_context(adpt_hba * pHba, u32 context)
695 {
696         struct scsi_cmnd * cmd;
697         struct scsi_device * d;
698
699         if (context == 0)
700                 return NULL;
701
702         spin_unlock(pHba->host->host_lock);
703         shost_for_each_device(d, pHba->host) {
704                 unsigned long flags;
705                 spin_lock_irqsave(&d->list_lock, flags);
706                 list_for_each_entry(cmd, &d->cmd_list, list) {
707                         if (((u32)cmd->serial_number == context)) {
708                                 spin_unlock_irqrestore(&d->list_lock, flags);
709                                 scsi_device_put(d);
710                                 spin_lock(pHba->host->host_lock);
711                                 return cmd;
712                         }
713                 }
714                 spin_unlock_irqrestore(&d->list_lock, flags);
715         }
716         spin_lock(pHba->host->host_lock);
717
718         return NULL;
719 }
720
721 /*
722  *      Turn a pointer to ioctl reply data into an u32 'context'
723  */
724 static u32 adpt_ioctl_to_context(adpt_hba * pHba, void *reply)
725 {
726 #if BITS_PER_LONG == 32
727         return (u32)(unsigned long)reply;
728 #else
729         ulong flags = 0;
730         u32 nr, i;
731
732         spin_lock_irqsave(pHba->host->host_lock, flags);
733         nr = ARRAY_SIZE(pHba->ioctl_reply_context);
734         for (i = 0; i < nr; i++) {
735                 if (pHba->ioctl_reply_context[i] == NULL) {
736                         pHba->ioctl_reply_context[i] = reply;
737                         break;
738                 }
739         }
740         spin_unlock_irqrestore(pHba->host->host_lock, flags);
741         if (i >= nr) {
742                 kfree (reply);
743                 printk(KERN_WARNING"%s: Too many outstanding "
744                                 "ioctl commands\n", pHba->name);
745                 return (u32)-1;
746         }
747
748         return i;
749 #endif
750 }
751
752 /*
753  *      Go from an u32 'context' to a pointer to ioctl reply data.
754  */
755 static void *adpt_ioctl_from_context(adpt_hba *pHba, u32 context)
756 {
757 #if BITS_PER_LONG == 32
758         return (void *)(unsigned long)context;
759 #else
760         void *p = pHba->ioctl_reply_context[context];
761         pHba->ioctl_reply_context[context] = NULL;
762
763         return p;
764 #endif
765 }
766
767 /*===========================================================================
768  * Error Handling routines
769  *===========================================================================
770  */
771
772 static int adpt_abort(struct scsi_cmnd * cmd)
773 {
774         adpt_hba* pHba = NULL;  /* host bus adapter structure */
775         struct adpt_device* dptdevice;  /* dpt per device information */
776         u32 msg[5];
777         int rcode;
778
779         if(cmd->serial_number == 0){
780                 return FAILED;
781         }
782         pHba = (adpt_hba*) cmd->device->host->hostdata[0];
783         printk(KERN_INFO"%s: Trying to Abort\n",pHba->name);
784         if ((dptdevice = (void*) (cmd->device->hostdata)) == NULL) {
785                 printk(KERN_ERR "%s: Unable to abort: No device in cmnd\n",pHba->name);
786                 return FAILED;
787         }
788
789         memset(msg, 0, sizeof(msg));
790         msg[0] = FIVE_WORD_MSG_SIZE|SGL_OFFSET_0;
791         msg[1] = I2O_CMD_SCSI_ABORT<<24|HOST_TID<<12|dptdevice->tid;
792         msg[2] = 0;
793         msg[3]= 0; 
794         msg[4] = adpt_cmd_to_context(cmd);
795         if (pHba->host)
796                 spin_lock_irq(pHba->host->host_lock);
797         rcode = adpt_i2o_post_wait(pHba, msg, sizeof(msg), FOREVER);
798         if (pHba->host)
799                 spin_unlock_irq(pHba->host->host_lock);
800         if (rcode != 0) {
801                 if(rcode == -EOPNOTSUPP ){
802                         printk(KERN_INFO"%s: Abort cmd not supported\n",pHba->name);
803                         return FAILED;
804                 }
805                 printk(KERN_INFO"%s: Abort failed.\n",pHba->name);
806                 return FAILED;
807         } 
808         printk(KERN_INFO"%s: Abort complete.\n",pHba->name);
809         return SUCCESS;
810 }
811
812
813 #define I2O_DEVICE_RESET 0x27
814 // This is the same for BLK and SCSI devices
815 // NOTE this is wrong in the i2o.h definitions
816 // This is not currently supported by our adapter but we issue it anyway
817 static int adpt_device_reset(struct scsi_cmnd* cmd)
818 {
819         adpt_hba* pHba;
820         u32 msg[4];
821         u32 rcode;
822         int old_state;
823         struct adpt_device* d = cmd->device->hostdata;
824
825         pHba = (void*) cmd->device->host->hostdata[0];
826         printk(KERN_INFO"%s: Trying to reset device\n",pHba->name);
827         if (!d) {
828                 printk(KERN_INFO"%s: Reset Device: Device Not found\n",pHba->name);
829                 return FAILED;
830         }
831         memset(msg, 0, sizeof(msg));
832         msg[0] = FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
833         msg[1] = (I2O_DEVICE_RESET<<24|HOST_TID<<12|d->tid);
834         msg[2] = 0;
835         msg[3] = 0;
836
837         if (pHba->host)
838                 spin_lock_irq(pHba->host->host_lock);
839         old_state = d->state;
840         d->state |= DPTI_DEV_RESET;
841         rcode = adpt_i2o_post_wait(pHba, msg,sizeof(msg), FOREVER);
842         d->state = old_state;
843         if (pHba->host)
844                 spin_unlock_irq(pHba->host->host_lock);
845         if (rcode != 0) {
846                 if(rcode == -EOPNOTSUPP ){
847                         printk(KERN_INFO"%s: Device reset not supported\n",pHba->name);
848                         return FAILED;
849                 }
850                 printk(KERN_INFO"%s: Device reset failed\n",pHba->name);
851                 return FAILED;
852         } else {
853                 printk(KERN_INFO"%s: Device reset successful\n",pHba->name);
854                 return SUCCESS;
855         }
856 }
857
858
859 #define I2O_HBA_BUS_RESET 0x87
860 // This version of bus reset is called by the eh_error handler
861 static int adpt_bus_reset(struct scsi_cmnd* cmd)
862 {
863         adpt_hba* pHba;
864         u32 msg[4];
865         u32 rcode;
866
867         pHba = (adpt_hba*)cmd->device->host->hostdata[0];
868         memset(msg, 0, sizeof(msg));
869         printk(KERN_WARNING"%s: Bus reset: SCSI Bus %d: tid: %d\n",pHba->name, cmd->device->channel,pHba->channel[cmd->device->channel].tid );
870         msg[0] = FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
871         msg[1] = (I2O_HBA_BUS_RESET<<24|HOST_TID<<12|pHba->channel[cmd->device->channel].tid);
872         msg[2] = 0;
873         msg[3] = 0;
874         if (pHba->host)
875                 spin_lock_irq(pHba->host->host_lock);
876         rcode = adpt_i2o_post_wait(pHba, msg,sizeof(msg), FOREVER);
877         if (pHba->host)
878                 spin_unlock_irq(pHba->host->host_lock);
879         if (rcode != 0) {
880                 printk(KERN_WARNING"%s: Bus reset failed.\n",pHba->name);
881                 return FAILED;
882         } else {
883                 printk(KERN_WARNING"%s: Bus reset success.\n",pHba->name);
884                 return SUCCESS;
885         }
886 }
887
888 // This version of reset is called by the eh_error_handler
889 static int __adpt_reset(struct scsi_cmnd* cmd)
890 {
891         adpt_hba* pHba;
892         int rcode;
893         pHba = (adpt_hba*)cmd->device->host->hostdata[0];
894         printk(KERN_WARNING"%s: Hba Reset: scsi id %d: tid: %d\n",pHba->name,cmd->device->channel,pHba->channel[cmd->device->channel].tid );
895         rcode =  adpt_hba_reset(pHba);
896         if(rcode == 0){
897                 printk(KERN_WARNING"%s: HBA reset complete\n",pHba->name);
898                 return SUCCESS;
899         } else {
900                 printk(KERN_WARNING"%s: HBA reset failed (%x)\n",pHba->name, rcode);
901                 return FAILED;
902         }
903 }
904
905 static int adpt_reset(struct scsi_cmnd* cmd)
906 {
907         int rc;
908
909         spin_lock_irq(cmd->device->host->host_lock);
910         rc = __adpt_reset(cmd);
911         spin_unlock_irq(cmd->device->host->host_lock);
912
913         return rc;
914 }
915
916 // This version of reset is called by the ioctls and indirectly from eh_error_handler via adpt_reset
917 static int adpt_hba_reset(adpt_hba* pHba)
918 {
919         int rcode;
920
921         pHba->state |= DPTI_STATE_RESET;
922
923         // Activate does get status , init outbound, and get hrt
924         if ((rcode=adpt_i2o_activate_hba(pHba)) < 0) {
925                 printk(KERN_ERR "%s: Could not activate\n", pHba->name);
926                 adpt_i2o_delete_hba(pHba);
927                 return rcode;
928         }
929
930         if ((rcode=adpt_i2o_build_sys_table()) < 0) {
931                 adpt_i2o_delete_hba(pHba);
932                 return rcode;
933         }
934         PDEBUG("%s: in HOLD state\n",pHba->name);
935
936         if ((rcode=adpt_i2o_online_hba(pHba)) < 0) {
937                 adpt_i2o_delete_hba(pHba);      
938                 return rcode;
939         }
940         PDEBUG("%s: in OPERATIONAL state\n",pHba->name);
941
942         if ((rcode=adpt_i2o_lct_get(pHba)) < 0){
943                 adpt_i2o_delete_hba(pHba);
944                 return rcode;
945         }
946
947         if ((rcode=adpt_i2o_reparse_lct(pHba)) < 0){
948                 adpt_i2o_delete_hba(pHba);
949                 return rcode;
950         }
951         pHba->state &= ~DPTI_STATE_RESET;
952
953         adpt_fail_posted_scbs(pHba);
954         return 0;       /* return success */
955 }
956
957 /*===========================================================================
958  * 
959  *===========================================================================
960  */
961
962
963 static void adpt_i2o_sys_shutdown(void)
964 {
965         adpt_hba *pHba, *pNext;
966         struct adpt_i2o_post_wait_data *p1, *old;
967
968          printk(KERN_INFO"Shutting down Adaptec I2O controllers.\n");
969          printk(KERN_INFO"   This could take a few minutes if there are many devices attached\n");
970         /* Delete all IOPs from the controller chain */
971         /* They should have already been released by the
972          * scsi-core
973          */
974         for (pHba = hba_chain; pHba; pHba = pNext) {
975                 pNext = pHba->next;
976                 adpt_i2o_delete_hba(pHba);
977         }
978
979         /* Remove any timedout entries from the wait queue.  */
980 //      spin_lock_irqsave(&adpt_post_wait_lock, flags);
981         /* Nothing should be outstanding at this point so just
982          * free them 
983          */
984         for(p1 = adpt_post_wait_queue; p1;) {
985                 old = p1;
986                 p1 = p1->next;
987                 kfree(old);
988         }
989 //      spin_unlock_irqrestore(&adpt_post_wait_lock, flags);
990         adpt_post_wait_queue = NULL;
991
992          printk(KERN_INFO "Adaptec I2O controllers down.\n");
993 }
994
995 static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev)
996 {
997
998         adpt_hba* pHba = NULL;
999         adpt_hba* p = NULL;
1000         ulong base_addr0_phys = 0;
1001         ulong base_addr1_phys = 0;
1002         u32 hba_map0_area_size = 0;
1003         u32 hba_map1_area_size = 0;
1004         void __iomem *base_addr_virt = NULL;
1005         void __iomem *msg_addr_virt = NULL;
1006         int dma64 = 0;
1007
1008         int raptorFlag = FALSE;
1009
1010         if(pci_enable_device(pDev)) {
1011                 return -EINVAL;
1012         }
1013
1014         if (pci_request_regions(pDev, "dpt_i2o")) {
1015                 PERROR("dpti: adpt_config_hba: pci request region failed\n");
1016                 return -EINVAL;
1017         }
1018
1019         pci_set_master(pDev);
1020
1021         /*
1022          *      See if we should enable dma64 mode.
1023          */
1024         if (sizeof(dma_addr_t) > 4 &&
1025             pci_set_dma_mask(pDev, DMA_BIT_MASK(64)) == 0) {
1026                 if (dma_get_required_mask(&pDev->dev) > DMA_BIT_MASK(32))
1027                         dma64 = 1;
1028         }
1029         if (!dma64 && pci_set_dma_mask(pDev, DMA_BIT_MASK(32)) != 0)
1030                 return -EINVAL;
1031
1032         /* adapter only supports message blocks below 4GB */
1033         pci_set_consistent_dma_mask(pDev, DMA_BIT_MASK(32));
1034
1035         base_addr0_phys = pci_resource_start(pDev,0);
1036         hba_map0_area_size = pci_resource_len(pDev,0);
1037
1038         // Check if standard PCI card or single BAR Raptor
1039         if(pDev->device == PCI_DPT_DEVICE_ID){
1040                 if(pDev->subsystem_device >=0xc032 && pDev->subsystem_device <= 0xc03b){
1041                         // Raptor card with this device id needs 4M
1042                         hba_map0_area_size = 0x400000;
1043                 } else { // Not Raptor - it is a PCI card
1044                         if(hba_map0_area_size > 0x100000 ){ 
1045                                 hba_map0_area_size = 0x100000;
1046                         }
1047                 }
1048         } else {// Raptor split BAR config
1049                 // Use BAR1 in this configuration
1050                 base_addr1_phys = pci_resource_start(pDev,1);
1051                 hba_map1_area_size = pci_resource_len(pDev,1);
1052                 raptorFlag = TRUE;
1053         }
1054
1055 #if BITS_PER_LONG == 64
1056         /*
1057          *      The original Adaptec 64 bit driver has this comment here:
1058          *      "x86_64 machines need more optimal mappings"
1059          *
1060          *      I assume some HBAs report ridiculously large mappings
1061          *      and we need to limit them on platforms with IOMMUs.
1062          */
1063         if (raptorFlag == TRUE) {
1064                 if (hba_map0_area_size > 128)
1065                         hba_map0_area_size = 128;
1066                 if (hba_map1_area_size > 524288)
1067                         hba_map1_area_size = 524288;
1068         } else {
1069                 if (hba_map0_area_size > 524288)
1070                         hba_map0_area_size = 524288;
1071         }
1072 #endif
1073
1074         base_addr_virt = ioremap(base_addr0_phys,hba_map0_area_size);
1075         if (!base_addr_virt) {
1076                 pci_release_regions(pDev);
1077                 PERROR("dpti: adpt_config_hba: io remap failed\n");
1078                 return -EINVAL;
1079         }
1080
1081         if(raptorFlag == TRUE) {
1082                 msg_addr_virt = ioremap(base_addr1_phys, hba_map1_area_size );
1083                 if (!msg_addr_virt) {
1084                         PERROR("dpti: adpt_config_hba: io remap failed on BAR1\n");
1085                         iounmap(base_addr_virt);
1086                         pci_release_regions(pDev);
1087                         return -EINVAL;
1088                 }
1089         } else {
1090                 msg_addr_virt = base_addr_virt;
1091         }
1092         
1093         // Allocate and zero the data structure
1094         pHba = kzalloc(sizeof(adpt_hba), GFP_KERNEL);
1095         if (!pHba) {
1096                 if (msg_addr_virt != base_addr_virt)
1097                         iounmap(msg_addr_virt);
1098                 iounmap(base_addr_virt);
1099                 pci_release_regions(pDev);
1100                 return -ENOMEM;
1101         }
1102
1103         mutex_lock(&adpt_configuration_lock);
1104
1105         if(hba_chain != NULL){
1106                 for(p = hba_chain; p->next; p = p->next);
1107                 p->next = pHba;
1108         } else {
1109                 hba_chain = pHba;
1110         }
1111         pHba->next = NULL;
1112         pHba->unit = hba_count;
1113         sprintf(pHba->name, "dpti%d", hba_count);
1114         hba_count++;
1115         
1116         mutex_unlock(&adpt_configuration_lock);
1117
1118         pHba->pDev = pDev;
1119         pHba->base_addr_phys = base_addr0_phys;
1120
1121         // Set up the Virtual Base Address of the I2O Device
1122         pHba->base_addr_virt = base_addr_virt;
1123         pHba->msg_addr_virt = msg_addr_virt;
1124         pHba->irq_mask = base_addr_virt+0x30;
1125         pHba->post_port = base_addr_virt+0x40;
1126         pHba->reply_port = base_addr_virt+0x44;
1127
1128         pHba->hrt = NULL;
1129         pHba->lct = NULL;
1130         pHba->lct_size = 0;
1131         pHba->status_block = NULL;
1132         pHba->post_count = 0;
1133         pHba->state = DPTI_STATE_RESET;
1134         pHba->pDev = pDev;
1135         pHba->devices = NULL;
1136         pHba->dma64 = dma64;
1137
1138         // Initializing the spinlocks
1139         spin_lock_init(&pHba->state_lock);
1140         spin_lock_init(&adpt_post_wait_lock);
1141
1142         if(raptorFlag == 0){
1143                 printk(KERN_INFO "Adaptec I2O RAID controller"
1144                                  " %d at %p size=%x irq=%d%s\n", 
1145                         hba_count-1, base_addr_virt,
1146                         hba_map0_area_size, pDev->irq,
1147                         dma64 ? " (64-bit DMA)" : "");
1148         } else {
1149                 printk(KERN_INFO"Adaptec I2O RAID controller %d irq=%d%s\n",
1150                         hba_count-1, pDev->irq,
1151                         dma64 ? " (64-bit DMA)" : "");
1152                 printk(KERN_INFO"     BAR0 %p - size= %x\n",base_addr_virt,hba_map0_area_size);
1153                 printk(KERN_INFO"     BAR1 %p - size= %x\n",msg_addr_virt,hba_map1_area_size);
1154         }
1155
1156         if (request_irq (pDev->irq, adpt_isr, IRQF_SHARED, pHba->name, pHba)) {
1157                 printk(KERN_ERR"%s: Couldn't register IRQ %d\n", pHba->name, pDev->irq);
1158                 adpt_i2o_delete_hba(pHba);
1159                 return -EINVAL;
1160         }
1161
1162         return 0;
1163 }
1164
1165
1166 static void adpt_i2o_delete_hba(adpt_hba* pHba)
1167 {
1168         adpt_hba* p1;
1169         adpt_hba* p2;
1170         struct i2o_device* d;
1171         struct i2o_device* next;
1172         int i;
1173         int j;
1174         struct adpt_device* pDev;
1175         struct adpt_device* pNext;
1176
1177
1178         mutex_lock(&adpt_configuration_lock);
1179         // scsi_unregister calls our adpt_release which
1180         // does a quiese
1181         if(pHba->host){
1182                 free_irq(pHba->host->irq, pHba);
1183         }
1184         p2 = NULL;
1185         for( p1 = hba_chain; p1; p2 = p1,p1=p1->next){
1186                 if(p1 == pHba) {
1187                         if(p2) {
1188                                 p2->next = p1->next;
1189                         } else {
1190                                 hba_chain = p1->next;
1191                         }
1192                         break;
1193                 }
1194         }
1195
1196         hba_count--;
1197         mutex_unlock(&adpt_configuration_lock);
1198
1199         iounmap(pHba->base_addr_virt);
1200         pci_release_regions(pHba->pDev);
1201         if(pHba->msg_addr_virt != pHba->base_addr_virt){
1202                 iounmap(pHba->msg_addr_virt);
1203         }
1204         if(pHba->FwDebugBuffer_P)
1205                 iounmap(pHba->FwDebugBuffer_P);
1206         if(pHba->hrt) {
1207                 dma_free_coherent(&pHba->pDev->dev,
1208                         pHba->hrt->num_entries * pHba->hrt->entry_len << 2,
1209                         pHba->hrt, pHba->hrt_pa);
1210         }
1211         if(pHba->lct) {
1212                 dma_free_coherent(&pHba->pDev->dev, pHba->lct_size,
1213                         pHba->lct, pHba->lct_pa);
1214         }
1215         if(pHba->status_block) {
1216                 dma_free_coherent(&pHba->pDev->dev, sizeof(i2o_status_block),
1217                         pHba->status_block, pHba->status_block_pa);
1218         }
1219         if(pHba->reply_pool) {
1220                 dma_free_coherent(&pHba->pDev->dev,
1221                         pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
1222                         pHba->reply_pool, pHba->reply_pool_pa);
1223         }
1224
1225         for(d = pHba->devices; d ; d = next){
1226                 next = d->next;
1227                 kfree(d);
1228         }
1229         for(i = 0 ; i < pHba->top_scsi_channel ; i++){
1230                 for(j = 0; j < MAX_ID; j++){
1231                         if(pHba->channel[i].device[j] != NULL){
1232                                 for(pDev = pHba->channel[i].device[j]; pDev; pDev = pNext){
1233                                         pNext = pDev->next_lun;
1234                                         kfree(pDev);
1235                                 }
1236                         }
1237                 }
1238         }
1239         pci_dev_put(pHba->pDev);
1240         if (adpt_sysfs_class)
1241                 device_destroy(adpt_sysfs_class,
1242                                 MKDEV(DPTI_I2O_MAJOR, pHba->unit));
1243         kfree(pHba);
1244
1245         if(hba_count <= 0){
1246                 unregister_chrdev(DPTI_I2O_MAJOR, DPT_DRIVER);   
1247                 if (adpt_sysfs_class) {
1248                         class_destroy(adpt_sysfs_class);
1249                         adpt_sysfs_class = NULL;
1250                 }
1251         }
1252 }
1253
1254 static struct adpt_device* adpt_find_device(adpt_hba* pHba, u32 chan, u32 id, u32 lun)
1255 {
1256         struct adpt_device* d;
1257
1258         if(chan < 0 || chan >= MAX_CHANNEL)
1259                 return NULL;
1260         
1261         if( pHba->channel[chan].device == NULL){
1262                 printk(KERN_DEBUG"Adaptec I2O RAID: Trying to find device before they are allocated\n");
1263                 return NULL;
1264         }
1265
1266         d = pHba->channel[chan].device[id];
1267         if(!d || d->tid == 0) {
1268                 return NULL;
1269         }
1270
1271         /* If it is the only lun at that address then this should match*/
1272         if(d->scsi_lun == lun){
1273                 return d;
1274         }
1275
1276         /* else we need to look through all the luns */
1277         for(d=d->next_lun ; d ; d = d->next_lun){
1278                 if(d->scsi_lun == lun){
1279                         return d;
1280                 }
1281         }
1282         return NULL;
1283 }
1284
1285
1286 static int adpt_i2o_post_wait(adpt_hba* pHba, u32* msg, int len, int timeout)
1287 {
1288         // I used my own version of the WAIT_QUEUE_HEAD
1289         // to handle some version differences
1290         // When embedded in the kernel this could go back to the vanilla one
1291         ADPT_DECLARE_WAIT_QUEUE_HEAD(adpt_wq_i2o_post);
1292         int status = 0;
1293         ulong flags = 0;
1294         struct adpt_i2o_post_wait_data *p1, *p2;
1295         struct adpt_i2o_post_wait_data *wait_data =
1296                 kmalloc(sizeof(struct adpt_i2o_post_wait_data), GFP_ATOMIC);
1297         DECLARE_WAITQUEUE(wait, current);
1298
1299         if (!wait_data)
1300                 return -ENOMEM;
1301
1302         /*
1303          * The spin locking is needed to keep anyone from playing
1304          * with the queue pointers and id while we do the same
1305          */
1306         spin_lock_irqsave(&adpt_post_wait_lock, flags);
1307        // TODO we need a MORE unique way of getting ids
1308        // to support async LCT get
1309         wait_data->next = adpt_post_wait_queue;
1310         adpt_post_wait_queue = wait_data;
1311         adpt_post_wait_id++;
1312         adpt_post_wait_id &= 0x7fff;
1313         wait_data->id =  adpt_post_wait_id;
1314         spin_unlock_irqrestore(&adpt_post_wait_lock, flags);
1315
1316         wait_data->wq = &adpt_wq_i2o_post;
1317         wait_data->status = -ETIMEDOUT;
1318
1319         add_wait_queue(&adpt_wq_i2o_post, &wait);
1320
1321         msg[2] |= 0x80000000 | ((u32)wait_data->id);
1322         timeout *= HZ;
1323         if((status = adpt_i2o_post_this(pHba, msg, len)) == 0){
1324                 set_current_state(TASK_INTERRUPTIBLE);
1325                 if(pHba->host)
1326                         spin_unlock_irq(pHba->host->host_lock);
1327                 if (!timeout)
1328                         schedule();
1329                 else{
1330                         timeout = schedule_timeout(timeout);
1331                         if (timeout == 0) {
1332                                 // I/O issued, but cannot get result in
1333                                 // specified time. Freeing resorces is
1334                                 // dangerous.
1335                                 status = -ETIME;
1336                         }
1337                 }
1338                 if(pHba->host)
1339                         spin_lock_irq(pHba->host->host_lock);
1340         }
1341         remove_wait_queue(&adpt_wq_i2o_post, &wait);
1342
1343         if(status == -ETIMEDOUT){
1344                 printk(KERN_INFO"dpti%d: POST WAIT TIMEOUT\n",pHba->unit);
1345                 // We will have to free the wait_data memory during shutdown
1346                 return status;
1347         }
1348
1349         /* Remove the entry from the queue.  */
1350         p2 = NULL;
1351         spin_lock_irqsave(&adpt_post_wait_lock, flags);
1352         for(p1 = adpt_post_wait_queue; p1; p2 = p1, p1 = p1->next) {
1353                 if(p1 == wait_data) {
1354                         if(p1->status == I2O_DETAIL_STATUS_UNSUPPORTED_FUNCTION ) {
1355                                 status = -EOPNOTSUPP;
1356                         }
1357                         if(p2) {
1358                                 p2->next = p1->next;
1359                         } else {
1360                                 adpt_post_wait_queue = p1->next;
1361                         }
1362                         break;
1363                 }
1364         }
1365         spin_unlock_irqrestore(&adpt_post_wait_lock, flags);
1366
1367         kfree(wait_data);
1368
1369         return status;
1370 }
1371
1372
1373 static s32 adpt_i2o_post_this(adpt_hba* pHba, u32* data, int len)
1374 {
1375
1376         u32 m = EMPTY_QUEUE;
1377         u32 __iomem *msg;
1378         ulong timeout = jiffies + 30*HZ;
1379         do {
1380                 rmb();
1381                 m = readl(pHba->post_port);
1382                 if (m != EMPTY_QUEUE) {
1383                         break;
1384                 }
1385                 if(time_after(jiffies,timeout)){
1386                         printk(KERN_WARNING"dpti%d: Timeout waiting for message frame!\n", pHba->unit);
1387                         return -ETIMEDOUT;
1388                 }
1389                 schedule_timeout_uninterruptible(1);
1390         } while(m == EMPTY_QUEUE);
1391                 
1392         msg = pHba->msg_addr_virt + m;
1393         memcpy_toio(msg, data, len);
1394         wmb();
1395
1396         //post message
1397         writel(m, pHba->post_port);
1398         wmb();
1399
1400         return 0;
1401 }
1402
1403
1404 static void adpt_i2o_post_wait_complete(u32 context, int status)
1405 {
1406         struct adpt_i2o_post_wait_data *p1 = NULL;
1407         /*
1408          * We need to search through the adpt_post_wait
1409          * queue to see if the given message is still
1410          * outstanding.  If not, it means that the IOP
1411          * took longer to respond to the message than we
1412          * had allowed and timer has already expired.
1413          * Not much we can do about that except log
1414          * it for debug purposes, increase timeout, and recompile
1415          *
1416          * Lock needed to keep anyone from moving queue pointers
1417          * around while we're looking through them.
1418          */
1419
1420         context &= 0x7fff;
1421
1422         spin_lock(&adpt_post_wait_lock);
1423         for(p1 = adpt_post_wait_queue; p1; p1 = p1->next) {
1424                 if(p1->id == context) {
1425                         p1->status = status;
1426                         spin_unlock(&adpt_post_wait_lock);
1427                         wake_up_interruptible(p1->wq);
1428                         return;
1429                 }
1430         }
1431         spin_unlock(&adpt_post_wait_lock);
1432         // If this happens we lose commands that probably really completed
1433         printk(KERN_DEBUG"dpti: Could Not find task %d in wait queue\n",context);
1434         printk(KERN_DEBUG"      Tasks in wait queue:\n");
1435         for(p1 = adpt_post_wait_queue; p1; p1 = p1->next) {
1436                 printk(KERN_DEBUG"           %d\n",p1->id);
1437         }
1438         return;
1439 }
1440
1441 static s32 adpt_i2o_reset_hba(adpt_hba* pHba)                   
1442 {
1443         u32 msg[8];
1444         u8* status;
1445         dma_addr_t addr;
1446         u32 m = EMPTY_QUEUE ;
1447         ulong timeout = jiffies + (TMOUT_IOPRESET*HZ);
1448
1449         if(pHba->initialized  == FALSE) {       // First time reset should be quick
1450                 timeout = jiffies + (25*HZ);
1451         } else {
1452                 adpt_i2o_quiesce_hba(pHba);
1453         }
1454
1455         do {
1456                 rmb();
1457                 m = readl(pHba->post_port);
1458                 if (m != EMPTY_QUEUE) {
1459                         break;
1460                 }
1461                 if(time_after(jiffies,timeout)){
1462                         printk(KERN_WARNING"Timeout waiting for message!\n");
1463                         return -ETIMEDOUT;
1464                 }
1465                 schedule_timeout_uninterruptible(1);
1466         } while (m == EMPTY_QUEUE);
1467
1468         status = dma_alloc_coherent(&pHba->pDev->dev, 4, &addr, GFP_KERNEL);
1469         if(status == NULL) {
1470                 adpt_send_nop(pHba, m);
1471                 printk(KERN_ERR"IOP reset failed - no free memory.\n");
1472                 return -ENOMEM;
1473         }
1474         memset(status,0,4);
1475
1476         msg[0]=EIGHT_WORD_MSG_SIZE|SGL_OFFSET_0;
1477         msg[1]=I2O_CMD_ADAPTER_RESET<<24|HOST_TID<<12|ADAPTER_TID;
1478         msg[2]=0;
1479         msg[3]=0;
1480         msg[4]=0;
1481         msg[5]=0;
1482         msg[6]=dma_low(addr);
1483         msg[7]=dma_high(addr);
1484
1485         memcpy_toio(pHba->msg_addr_virt+m, msg, sizeof(msg));
1486         wmb();
1487         writel(m, pHba->post_port);
1488         wmb();
1489
1490         while(*status == 0){
1491                 if(time_after(jiffies,timeout)){
1492                         printk(KERN_WARNING"%s: IOP Reset Timeout\n",pHba->name);
1493                         /* We lose 4 bytes of "status" here, but we cannot
1494                            free these because controller may awake and corrupt
1495                            those bytes at any time */
1496                         /* dma_free_coherent(&pHba->pDev->dev, 4, buf, addr); */
1497                         return -ETIMEDOUT;
1498                 }
1499                 rmb();
1500                 schedule_timeout_uninterruptible(1);
1501         }
1502
1503         if(*status == 0x01 /*I2O_EXEC_IOP_RESET_IN_PROGRESS*/) {
1504                 PDEBUG("%s: Reset in progress...\n", pHba->name);
1505                 // Here we wait for message frame to become available
1506                 // indicated that reset has finished
1507                 do {
1508                         rmb();
1509                         m = readl(pHba->post_port);
1510                         if (m != EMPTY_QUEUE) {
1511                                 break;
1512                         }
1513                         if(time_after(jiffies,timeout)){
1514                                 printk(KERN_ERR "%s:Timeout waiting for IOP Reset.\n",pHba->name);
1515                                 /* We lose 4 bytes of "status" here, but we
1516                                    cannot free these because controller may
1517                                    awake and corrupt those bytes at any time */
1518                                 /* dma_free_coherent(&pHba->pDev->dev, 4, buf, addr); */
1519                                 return -ETIMEDOUT;
1520                         }
1521                         schedule_timeout_uninterruptible(1);
1522                 } while (m == EMPTY_QUEUE);
1523                 // Flush the offset
1524                 adpt_send_nop(pHba, m);
1525         }
1526         adpt_i2o_status_get(pHba);
1527         if(*status == 0x02 ||
1528                         pHba->status_block->iop_state != ADAPTER_STATE_RESET) {
1529                 printk(KERN_WARNING"%s: Reset reject, trying to clear\n",
1530                                 pHba->name);
1531         } else {
1532                 PDEBUG("%s: Reset completed.\n", pHba->name);
1533         }
1534
1535         dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
1536 #ifdef UARTDELAY
1537         // This delay is to allow someone attached to the card through the debug UART to 
1538         // set up the dump levels that they want before the rest of the initialization sequence
1539         adpt_delay(20000);
1540 #endif
1541         return 0;
1542 }
1543
1544
1545 static int adpt_i2o_parse_lct(adpt_hba* pHba)
1546 {
1547         int i;
1548         int max;
1549         int tid;
1550         struct i2o_device *d;
1551         i2o_lct *lct = pHba->lct;
1552         u8 bus_no = 0;
1553         s16 scsi_id;
1554         s16 scsi_lun;
1555         u32 buf[10]; // larger than 7, or 8 ...
1556         struct adpt_device* pDev; 
1557         
1558         if (lct == NULL) {
1559                 printk(KERN_ERR "%s: LCT is empty???\n",pHba->name);
1560                 return -1;
1561         }
1562         
1563         max = lct->table_size;  
1564         max -= 3;
1565         max /= 9;
1566
1567         for(i=0;i<max;i++) {
1568                 if( lct->lct_entry[i].user_tid != 0xfff){
1569                         /*
1570                          * If we have hidden devices, we need to inform the upper layers about
1571                          * the possible maximum id reference to handle device access when
1572                          * an array is disassembled. This code has no other purpose but to
1573                          * allow us future access to devices that are currently hidden
1574                          * behind arrays, hotspares or have not been configured (JBOD mode).
1575                          */
1576                         if( lct->lct_entry[i].class_id != I2O_CLASS_RANDOM_BLOCK_STORAGE &&
1577                             lct->lct_entry[i].class_id != I2O_CLASS_SCSI_PERIPHERAL &&
1578                             lct->lct_entry[i].class_id != I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL ){
1579                                 continue;
1580                         }
1581                         tid = lct->lct_entry[i].tid;
1582                         // I2O_DPT_DEVICE_INFO_GROUP_NO;
1583                         if(adpt_i2o_query_scalar(pHba, tid, 0x8000, -1, buf, 32)<0) {
1584                                 continue;
1585                         }
1586                         bus_no = buf[0]>>16;
1587                         scsi_id = buf[1];
1588                         scsi_lun = (buf[2]>>8 )&0xff;
1589                         if(bus_no >= MAX_CHANNEL) {     // Something wrong skip it
1590                                 printk(KERN_WARNING"%s: Channel number %d out of range \n", pHba->name, bus_no);
1591                                 continue;
1592                         }
1593                         if (scsi_id >= MAX_ID){
1594                                 printk(KERN_WARNING"%s: SCSI ID %d out of range \n", pHba->name, bus_no);
1595                                 continue;
1596                         }
1597                         if(bus_no > pHba->top_scsi_channel){
1598                                 pHba->top_scsi_channel = bus_no;
1599                         }
1600                         if(scsi_id > pHba->top_scsi_id){
1601                                 pHba->top_scsi_id = scsi_id;
1602                         }
1603                         if(scsi_lun > pHba->top_scsi_lun){
1604                                 pHba->top_scsi_lun = scsi_lun;
1605                         }
1606                         continue;
1607                 }
1608                 d = kmalloc(sizeof(struct i2o_device), GFP_KERNEL);
1609                 if(d==NULL)
1610                 {
1611                         printk(KERN_CRIT"%s: Out of memory for I2O device data.\n",pHba->name);
1612                         return -ENOMEM;
1613                 }
1614                 
1615                 d->controller = pHba;
1616                 d->next = NULL;
1617
1618                 memcpy(&d->lct_data, &lct->lct_entry[i], sizeof(i2o_lct_entry));
1619
1620                 d->flags = 0;
1621                 tid = d->lct_data.tid;
1622                 adpt_i2o_report_hba_unit(pHba, d);
1623                 adpt_i2o_install_device(pHba, d);
1624         }
1625         bus_no = 0;
1626         for(d = pHba->devices; d ; d = d->next) {
1627                 if(d->lct_data.class_id  == I2O_CLASS_BUS_ADAPTER_PORT ||
1628                    d->lct_data.class_id  == I2O_CLASS_FIBRE_CHANNEL_PORT){
1629                         tid = d->lct_data.tid;
1630                         // TODO get the bus_no from hrt-but for now they are in order
1631                         //bus_no = 
1632                         if(bus_no > pHba->top_scsi_channel){
1633                                 pHba->top_scsi_channel = bus_no;
1634                         }
1635                         pHba->channel[bus_no].type = d->lct_data.class_id;
1636                         pHba->channel[bus_no].tid = tid;
1637                         if(adpt_i2o_query_scalar(pHba, tid, 0x0200, -1, buf, 28)>=0)
1638                         {
1639                                 pHba->channel[bus_no].scsi_id = buf[1];
1640                                 PDEBUG("Bus %d - SCSI ID %d.\n", bus_no, buf[1]);
1641                         }
1642                         // TODO remove - this is just until we get from hrt
1643                         bus_no++;
1644                         if(bus_no >= MAX_CHANNEL) {     // Something wrong skip it
1645                                 printk(KERN_WARNING"%s: Channel number %d out of range - LCT\n", pHba->name, bus_no);
1646                                 break;
1647                         }
1648                 }
1649         }
1650
1651         // Setup adpt_device table
1652         for(d = pHba->devices; d ; d = d->next) {
1653                 if(d->lct_data.class_id  == I2O_CLASS_RANDOM_BLOCK_STORAGE ||
1654                    d->lct_data.class_id  == I2O_CLASS_SCSI_PERIPHERAL ||
1655                    d->lct_data.class_id  == I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL ){
1656
1657                         tid = d->lct_data.tid;
1658                         scsi_id = -1;
1659                         // I2O_DPT_DEVICE_INFO_GROUP_NO;
1660                         if(adpt_i2o_query_scalar(pHba, tid, 0x8000, -1, buf, 32)>=0) {
1661                                 bus_no = buf[0]>>16;
1662                                 scsi_id = buf[1];
1663                                 scsi_lun = (buf[2]>>8 )&0xff;
1664                                 if(bus_no >= MAX_CHANNEL) {     // Something wrong skip it
1665                                         continue;
1666                                 }
1667                                 if (scsi_id >= MAX_ID) {
1668                                         continue;
1669                                 }
1670                                 if( pHba->channel[bus_no].device[scsi_id] == NULL){
1671                                         pDev =  kzalloc(sizeof(struct adpt_device),GFP_KERNEL);
1672                                         if(pDev == NULL) {
1673                                                 return -ENOMEM;
1674                                         }
1675                                         pHba->channel[bus_no].device[scsi_id] = pDev;
1676                                 } else {
1677                                         for( pDev = pHba->channel[bus_no].device[scsi_id];      
1678                                                         pDev->next_lun; pDev = pDev->next_lun){
1679                                         }
1680                                         pDev->next_lun = kzalloc(sizeof(struct adpt_device),GFP_KERNEL);
1681                                         if(pDev->next_lun == NULL) {
1682                                                 return -ENOMEM;
1683                                         }
1684                                         pDev = pDev->next_lun;
1685                                 }
1686                                 pDev->tid = tid;
1687                                 pDev->scsi_channel = bus_no;
1688                                 pDev->scsi_id = scsi_id;
1689                                 pDev->scsi_lun = scsi_lun;
1690                                 pDev->pI2o_dev = d;
1691                                 d->owner = pDev;
1692                                 pDev->type = (buf[0])&0xff;
1693                                 pDev->flags = (buf[0]>>8)&0xff;
1694                                 if(scsi_id > pHba->top_scsi_id){
1695                                         pHba->top_scsi_id = scsi_id;
1696                                 }
1697                                 if(scsi_lun > pHba->top_scsi_lun){
1698                                         pHba->top_scsi_lun = scsi_lun;
1699                                 }
1700                         }
1701                         if(scsi_id == -1){
1702                                 printk(KERN_WARNING"Could not find SCSI ID for %s\n",
1703                                                 d->lct_data.identity_tag);
1704                         }
1705                 }
1706         }
1707         return 0;
1708 }
1709
1710
1711 /*
1712  *      Each I2O controller has a chain of devices on it - these match
1713  *      the useful parts of the LCT of the board.
1714  */
1715  
1716 static int adpt_i2o_install_device(adpt_hba* pHba, struct i2o_device *d)
1717 {
1718         mutex_lock(&adpt_configuration_lock);
1719         d->controller=pHba;
1720         d->owner=NULL;
1721         d->next=pHba->devices;
1722         d->prev=NULL;
1723         if (pHba->devices != NULL){
1724                 pHba->devices->prev=d;
1725         }
1726         pHba->devices=d;
1727         *d->dev_name = 0;
1728
1729         mutex_unlock(&adpt_configuration_lock);
1730         return 0;
1731 }
1732
1733 static int adpt_open(struct inode *inode, struct file *file)
1734 {
1735         int minor;
1736         adpt_hba* pHba;
1737
1738         mutex_lock(&adpt_mutex);
1739         //TODO check for root access
1740         //
1741         minor = iminor(inode);
1742         if (minor >= hba_count) {
1743                 mutex_unlock(&adpt_mutex);
1744                 return -ENXIO;
1745         }
1746         mutex_lock(&adpt_configuration_lock);
1747         for (pHba = hba_chain; pHba; pHba = pHba->next) {
1748                 if (pHba->unit == minor) {
1749                         break;  /* found adapter */
1750                 }
1751         }
1752         if (pHba == NULL) {
1753                 mutex_unlock(&adpt_configuration_lock);
1754                 mutex_unlock(&adpt_mutex);
1755                 return -ENXIO;
1756         }
1757
1758 //      if(pHba->in_use){
1759         //      mutex_unlock(&adpt_configuration_lock);
1760 //              return -EBUSY;
1761 //      }
1762
1763         pHba->in_use = 1;
1764         mutex_unlock(&adpt_configuration_lock);
1765         mutex_unlock(&adpt_mutex);
1766
1767         return 0;
1768 }
1769
1770 static int adpt_close(struct inode *inode, struct file *file)
1771 {
1772         int minor;
1773         adpt_hba* pHba;
1774
1775         minor = iminor(inode);
1776         if (minor >= hba_count) {
1777                 return -ENXIO;
1778         }
1779         mutex_lock(&adpt_configuration_lock);
1780         for (pHba = hba_chain; pHba; pHba = pHba->next) {
1781                 if (pHba->unit == minor) {
1782                         break;  /* found adapter */
1783                 }
1784         }
1785         mutex_unlock(&adpt_configuration_lock);
1786         if (pHba == NULL) {
1787                 return -ENXIO;
1788         }
1789
1790         pHba->in_use = 0;
1791
1792         return 0;
1793 }
1794
1795
1796 static int adpt_i2o_passthru(adpt_hba* pHba, u32 __user *arg)
1797 {
1798         u32 msg[MAX_MESSAGE_SIZE];
1799         u32* reply = NULL;
1800         u32 size = 0;
1801         u32 reply_size = 0;
1802         u32 __user *user_msg = arg;
1803         u32 __user * user_reply = NULL;
1804         void *sg_list[pHba->sg_tablesize];
1805         u32 sg_offset = 0;
1806         u32 sg_count = 0;
1807         int sg_index = 0;
1808         u32 i = 0;
1809         u32 rcode = 0;
1810         void *p = NULL;
1811         dma_addr_t addr;
1812         ulong flags = 0;
1813
1814         memset(&msg, 0, MAX_MESSAGE_SIZE*4);
1815         // get user msg size in u32s 
1816         if(get_user(size, &user_msg[0])){
1817                 return -EFAULT;
1818         }
1819         size = size>>16;
1820
1821         user_reply = &user_msg[size];
1822         if(size > MAX_MESSAGE_SIZE){
1823                 return -EFAULT;
1824         }
1825         size *= 4; // Convert to bytes
1826
1827         /* Copy in the user's I2O command */
1828         if(copy_from_user(msg, user_msg, size)) {
1829                 return -EFAULT;
1830         }
1831         get_user(reply_size, &user_reply[0]);
1832         reply_size = reply_size>>16;
1833         if(reply_size > REPLY_FRAME_SIZE){
1834                 reply_size = REPLY_FRAME_SIZE;
1835         }
1836         reply_size *= 4;
1837         reply = kzalloc(REPLY_FRAME_SIZE*4, GFP_KERNEL);
1838         if(reply == NULL) {
1839                 printk(KERN_WARNING"%s: Could not allocate reply buffer\n",pHba->name);
1840                 return -ENOMEM;
1841         }
1842         sg_offset = (msg[0]>>4)&0xf;
1843         msg[2] = 0x40000000; // IOCTL context
1844         msg[3] = adpt_ioctl_to_context(pHba, reply);
1845         if (msg[3] == (u32)-1)
1846                 return -EBUSY;
1847
1848         memset(sg_list,0, sizeof(sg_list[0])*pHba->sg_tablesize);
1849         if(sg_offset) {
1850                 // TODO add 64 bit API
1851                 struct sg_simple_element *sg =  (struct sg_simple_element*) (msg+sg_offset);
1852                 sg_count = (size - sg_offset*4) / sizeof(struct sg_simple_element);
1853                 if (sg_count > pHba->sg_tablesize){
1854                         printk(KERN_DEBUG"%s:IOCTL SG List too large (%u)\n", pHba->name,sg_count);
1855                         kfree (reply);
1856                         return -EINVAL;
1857                 }
1858
1859                 for(i = 0; i < sg_count; i++) {
1860                         int sg_size;
1861
1862                         if (!(sg[i].flag_count & 0x10000000 /*I2O_SGL_FLAGS_SIMPLE_ADDRESS_ELEMENT*/)) {
1863                                 printk(KERN_DEBUG"%s:Bad SG element %d - not simple (%x)\n",pHba->name,i,  sg[i].flag_count);
1864                                 rcode = -EINVAL;
1865                                 goto cleanup;
1866                         }
1867                         sg_size = sg[i].flag_count & 0xffffff;      
1868                         /* Allocate memory for the transfer */
1869                         p = dma_alloc_coherent(&pHba->pDev->dev, sg_size, &addr, GFP_KERNEL);
1870                         if(!p) {
1871                                 printk(KERN_DEBUG"%s: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
1872                                                 pHba->name,sg_size,i,sg_count);
1873                                 rcode = -ENOMEM;
1874                                 goto cleanup;
1875                         }
1876                         sg_list[sg_index++] = p; // sglist indexed with input frame, not our internal frame.
1877                         /* Copy in the user's SG buffer if necessary */
1878                         if(sg[i].flag_count & 0x04000000 /*I2O_SGL_FLAGS_DIR*/) {
1879                                 // sg_simple_element API is 32 bit
1880                                 if (copy_from_user(p,(void __user *)(ulong)sg[i].addr_bus, sg_size)) {
1881                                         printk(KERN_DEBUG"%s: Could not copy SG buf %d FROM user\n",pHba->name,i);
1882                                         rcode = -EFAULT;
1883                                         goto cleanup;
1884                                 }
1885                         }
1886                         /* sg_simple_element API is 32 bit, but addr < 4GB */
1887                         sg[i].addr_bus = addr;
1888                 }
1889         }
1890
1891         do {
1892                 if(pHba->host)
1893                         spin_lock_irqsave(pHba->host->host_lock, flags);
1894                 // This state stops any new commands from enterring the
1895                 // controller while processing the ioctl
1896 //              pHba->state |= DPTI_STATE_IOCTL;
1897 //              We can't set this now - The scsi subsystem sets host_blocked and
1898 //              the queue empties and stops.  We need a way to restart the queue
1899                 rcode = adpt_i2o_post_wait(pHba, msg, size, FOREVER);
1900                 if (rcode != 0)
1901                         printk("adpt_i2o_passthru: post wait failed %d %p\n",
1902                                         rcode, reply);
1903 //              pHba->state &= ~DPTI_STATE_IOCTL;
1904                 if(pHba->host)
1905                         spin_unlock_irqrestore(pHba->host->host_lock, flags);
1906         } while(rcode == -ETIMEDOUT);  
1907
1908         if(rcode){
1909                 goto cleanup;
1910         }
1911
1912         if(sg_offset) {
1913         /* Copy back the Scatter Gather buffers back to user space */
1914                 u32 j;
1915                 // TODO add 64 bit API
1916                 struct sg_simple_element* sg;
1917                 int sg_size;
1918
1919                 // re-acquire the original message to handle correctly the sg copy operation
1920                 memset(&msg, 0, MAX_MESSAGE_SIZE*4); 
1921                 // get user msg size in u32s 
1922                 if(get_user(size, &user_msg[0])){
1923                         rcode = -EFAULT; 
1924                         goto cleanup; 
1925                 }
1926                 size = size>>16;
1927                 size *= 4;
1928                 if (size > MAX_MESSAGE_SIZE) {
1929                         rcode = -EINVAL;
1930                         goto cleanup;
1931                 }
1932                 /* Copy in the user's I2O command */
1933                 if (copy_from_user (msg, user_msg, size)) {
1934                         rcode = -EFAULT;
1935                         goto cleanup;
1936                 }
1937                 sg_count = (size - sg_offset*4) / sizeof(struct sg_simple_element);
1938
1939                 // TODO add 64 bit API
1940                 sg       = (struct sg_simple_element*)(msg + sg_offset);
1941                 for (j = 0; j < sg_count; j++) {
1942                         /* Copy out the SG list to user's buffer if necessary */
1943                         if(! (sg[j].flag_count & 0x4000000 /*I2O_SGL_FLAGS_DIR*/)) {
1944                                 sg_size = sg[j].flag_count & 0xffffff; 
1945                                 // sg_simple_element API is 32 bit
1946                                 if (copy_to_user((void __user *)(ulong)sg[j].addr_bus,sg_list[j], sg_size)) {
1947                                         printk(KERN_WARNING"%s: Could not copy %p TO user %x\n",pHba->name, sg_list[j], sg[j].addr_bus);
1948                                         rcode = -EFAULT;
1949                                         goto cleanup;
1950                                 }
1951                         }
1952                 }
1953         } 
1954
1955         /* Copy back the reply to user space */
1956         if (reply_size) {
1957                 // we wrote our own values for context - now restore the user supplied ones
1958                 if(copy_from_user(reply+2, user_msg+2, sizeof(u32)*2)) {
1959                         printk(KERN_WARNING"%s: Could not copy message context FROM user\n",pHba->name);
1960                         rcode = -EFAULT;
1961                 }
1962                 if(copy_to_user(user_reply, reply, reply_size)) {
1963                         printk(KERN_WARNING"%s: Could not copy reply TO user\n",pHba->name);
1964                         rcode = -EFAULT;
1965                 }
1966         }
1967
1968
1969 cleanup:
1970         if (rcode != -ETIME && rcode != -EINTR) {
1971                 struct sg_simple_element *sg =
1972                                 (struct sg_simple_element*) (msg +sg_offset);
1973                 kfree (reply);
1974                 while(sg_index) {
1975                         if(sg_list[--sg_index]) {
1976                                 dma_free_coherent(&pHba->pDev->dev,
1977                                         sg[sg_index].flag_count & 0xffffff,
1978                                         sg_list[sg_index],
1979                                         sg[sg_index].addr_bus);
1980                         }
1981                 }
1982         }
1983         return rcode;
1984 }
1985
1986 #if defined __ia64__ 
1987 static void adpt_ia64_info(sysInfo_S* si)
1988 {
1989         // This is all the info we need for now
1990         // We will add more info as our new
1991         // managmenent utility requires it
1992         si->processorType = PROC_IA64;
1993 }
1994 #endif
1995
1996 #if defined __sparc__ 
1997 static void adpt_sparc_info(sysInfo_S* si)
1998 {
1999         // This is all the info we need for now
2000         // We will add more info as our new
2001         // managmenent utility requires it
2002         si->processorType = PROC_ULTRASPARC;
2003 }
2004 #endif
2005 #if defined __alpha__ 
2006 static void adpt_alpha_info(sysInfo_S* si)
2007 {
2008         // This is all the info we need for now
2009         // We will add more info as our new
2010         // managmenent utility requires it
2011         si->processorType = PROC_ALPHA;
2012 }
2013 #endif
2014
2015 #if defined __i386__
2016 static void adpt_i386_info(sysInfo_S* si)
2017 {
2018         // This is all the info we need for now
2019         // We will add more info as our new
2020         // managmenent utility requires it
2021         switch (boot_cpu_data.x86) {
2022         case CPU_386:
2023                 si->processorType = PROC_386;
2024                 break;
2025         case CPU_486:
2026                 si->processorType = PROC_486;
2027                 break;
2028         case CPU_586:
2029                 si->processorType = PROC_PENTIUM;
2030                 break;
2031         default:  // Just in case 
2032                 si->processorType = PROC_PENTIUM;
2033                 break;
2034         }
2035 }
2036 #endif
2037
2038 /*
2039  * This routine returns information about the system.  This does not effect
2040  * any logic and if the info is wrong - it doesn't matter.
2041  */
2042
2043 /* Get all the info we can not get from kernel services */
2044 static int adpt_system_info(void __user *buffer)
2045 {
2046         sysInfo_S si;
2047
2048         memset(&si, 0, sizeof(si));
2049
2050         si.osType = OS_LINUX;
2051         si.osMajorVersion = 0;
2052         si.osMinorVersion = 0;
2053         si.osRevision = 0;
2054         si.busType = SI_PCI_BUS;
2055         si.processorFamily = DPTI_sig.dsProcessorFamily;
2056
2057 #if defined __i386__
2058         adpt_i386_info(&si);
2059 #elif defined (__ia64__)
2060         adpt_ia64_info(&si);
2061 #elif defined(__sparc__)
2062         adpt_sparc_info(&si);
2063 #elif defined (__alpha__)
2064         adpt_alpha_info(&si);
2065 #else
2066         si.processorType = 0xff ;
2067 #endif
2068         if (copy_to_user(buffer, &si, sizeof(si))){
2069                 printk(KERN_WARNING"dpti: Could not copy buffer TO user\n");
2070                 return -EFAULT;
2071         }
2072
2073         return 0;
2074 }
2075
2076 static int adpt_ioctl(struct inode *inode, struct file *file, uint cmd, ulong arg)
2077 {
2078         int minor;
2079         int error = 0;
2080         adpt_hba* pHba;
2081         ulong flags = 0;
2082         void __user *argp = (void __user *)arg;
2083
2084         minor = iminor(inode);
2085         if (minor >= DPTI_MAX_HBA){
2086                 return -ENXIO;
2087         }
2088         mutex_lock(&adpt_configuration_lock);
2089         for (pHba = hba_chain; pHba; pHba = pHba->next) {
2090                 if (pHba->unit == minor) {
2091                         break;  /* found adapter */
2092                 }
2093         }
2094         mutex_unlock(&adpt_configuration_lock);
2095         if(pHba == NULL){
2096                 return -ENXIO;
2097         }
2098
2099         while((volatile u32) pHba->state & DPTI_STATE_RESET )
2100                 schedule_timeout_uninterruptible(2);
2101
2102         switch (cmd) {
2103         // TODO: handle 3 cases
2104         case DPT_SIGNATURE:
2105                 if (copy_to_user(argp, &DPTI_sig, sizeof(DPTI_sig))) {
2106                         return -EFAULT;
2107                 }
2108                 break;
2109         case I2OUSRCMD:
2110                 return adpt_i2o_passthru(pHba, argp);
2111
2112         case DPT_CTRLINFO:{
2113                 drvrHBAinfo_S HbaInfo;
2114
2115 #define FLG_OSD_PCI_VALID 0x0001
2116 #define FLG_OSD_DMA       0x0002
2117 #define FLG_OSD_I2O       0x0004
2118                 memset(&HbaInfo, 0, sizeof(HbaInfo));
2119                 HbaInfo.drvrHBAnum = pHba->unit;
2120                 HbaInfo.baseAddr = (ulong) pHba->base_addr_phys;
2121                 HbaInfo.blinkState = adpt_read_blink_led(pHba);
2122                 HbaInfo.pciBusNum =  pHba->pDev->bus->number;
2123                 HbaInfo.pciDeviceNum=PCI_SLOT(pHba->pDev->devfn); 
2124                 HbaInfo.Interrupt = pHba->pDev->irq; 
2125                 HbaInfo.hbaFlags = FLG_OSD_PCI_VALID | FLG_OSD_DMA | FLG_OSD_I2O;
2126                 if(copy_to_user(argp, &HbaInfo, sizeof(HbaInfo))){
2127                         printk(KERN_WARNING"%s: Could not copy HbaInfo TO user\n",pHba->name);
2128                         return -EFAULT;
2129                 }
2130                 break;
2131                 }
2132         case DPT_SYSINFO:
2133                 return adpt_system_info(argp);
2134         case DPT_BLINKLED:{
2135                 u32 value;
2136                 value = (u32)adpt_read_blink_led(pHba);
2137                 if (copy_to_user(argp, &value, sizeof(value))) {
2138                         return -EFAULT;
2139                 }
2140                 break;
2141                 }
2142         case I2ORESETCMD:
2143                 if(pHba->host)
2144                         spin_lock_irqsave(pHba->host->host_lock, flags);
2145                 adpt_hba_reset(pHba);
2146                 if(pHba->host)
2147                         spin_unlock_irqrestore(pHba->host->host_lock, flags);
2148                 break;
2149         case I2ORESCANCMD:
2150                 adpt_rescan(pHba);
2151                 break;
2152         default:
2153                 return -EINVAL;
2154         }
2155
2156         return error;
2157 }
2158
2159 static long adpt_unlocked_ioctl(struct file *file, uint cmd, ulong arg)
2160 {
2161         struct inode *inode;
2162         long ret;
2163  
2164         inode = file->f_dentry->d_inode;
2165  
2166         mutex_lock(&adpt_mutex);
2167         ret = adpt_ioctl(inode, file, cmd, arg);
2168         mutex_unlock(&adpt_mutex);
2169
2170         return ret;
2171 }
2172
2173 #ifdef CONFIG_COMPAT
2174 static long compat_adpt_ioctl(struct file *file,
2175                                 unsigned int cmd, unsigned long arg)
2176 {
2177         struct inode *inode;
2178         long ret;
2179  
2180         inode = file->f_dentry->d_inode;
2181  
2182         mutex_lock(&adpt_mutex);
2183  
2184         switch(cmd) {
2185                 case DPT_SIGNATURE:
2186                 case I2OUSRCMD:
2187                 case DPT_CTRLINFO:
2188                 case DPT_SYSINFO:
2189                 case DPT_BLINKLED:
2190                 case I2ORESETCMD:
2191                 case I2ORESCANCMD:
2192                 case (DPT_TARGET_BUSY & 0xFFFF):
2193                 case DPT_TARGET_BUSY:
2194                         ret = adpt_ioctl(inode, file, cmd, arg);
2195                         break;
2196                 default:
2197                         ret =  -ENOIOCTLCMD;
2198         }
2199  
2200         mutex_unlock(&adpt_mutex);
2201  
2202         return ret;
2203 }
2204 #endif
2205
2206 static irqreturn_t adpt_isr(int irq, void *dev_id)
2207 {
2208         struct scsi_cmnd* cmd;
2209         adpt_hba* pHba = dev_id;
2210         u32 m;
2211         void __iomem *reply;
2212         u32 status=0;
2213         u32 context;
2214         ulong flags = 0;
2215         int handled = 0;
2216
2217         if (pHba == NULL){
2218                 printk(KERN_WARNING"adpt_isr: NULL dev_id\n");
2219                 return IRQ_NONE;
2220         }
2221         if(pHba->host)
2222                 spin_lock_irqsave(pHba->host->host_lock, flags);
2223
2224         while( readl(pHba->irq_mask) & I2O_INTERRUPT_PENDING_B) {
2225                 m = readl(pHba->reply_port);
2226                 if(m == EMPTY_QUEUE){
2227                         // Try twice then give up
2228                         rmb();
2229                         m = readl(pHba->reply_port);
2230                         if(m == EMPTY_QUEUE){ 
2231                                 // This really should not happen
2232                                 printk(KERN_ERR"dpti: Could not get reply frame\n");
2233                                 goto out;
2234                         }
2235                 }
2236                 if (pHba->reply_pool_pa <= m &&
2237                     m < pHba->reply_pool_pa +
2238                         (pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4)) {
2239                         reply = (u8 *)pHba->reply_pool +
2240                                                 (m - pHba->reply_pool_pa);
2241                 } else {
2242                         /* Ick, we should *never* be here */
2243                         printk(KERN_ERR "dpti: reply frame not from pool\n");
2244                         reply = (u8 *)bus_to_virt(m);
2245                 }
2246
2247                 if (readl(reply) & MSG_FAIL) {
2248                         u32 old_m = readl(reply+28); 
2249                         void __iomem *msg;
2250                         u32 old_context;
2251                         PDEBUG("%s: Failed message\n",pHba->name);
2252                         if(old_m >= 0x100000){
2253                                 printk(KERN_ERR"%s: Bad preserved MFA (%x)- dropping frame\n",pHba->name,old_m);
2254                                 writel(m,pHba->reply_port);
2255                                 continue;
2256                         }
2257                         // Transaction context is 0 in failed reply frame
2258                         msg = pHba->msg_addr_virt + old_m;
2259                         old_context = readl(msg+12);
2260                         writel(old_context, reply+12);
2261                         adpt_send_nop(pHba, old_m);
2262                 } 
2263                 context = readl(reply+8);
2264                 if(context & 0x40000000){ // IOCTL
2265                         void *p = adpt_ioctl_from_context(pHba, readl(reply+12));
2266                         if( p != NULL) {
2267                                 memcpy_fromio(p, reply, REPLY_FRAME_SIZE * 4);
2268                         }
2269                         // All IOCTLs will also be post wait
2270                 }
2271                 if(context & 0x80000000){ // Post wait message
2272                         status = readl(reply+16);
2273                         if(status  >> 24){
2274                                 status &=  0xffff; /* Get detail status */
2275                         } else {
2276                                 status = I2O_POST_WAIT_OK;
2277                         }
2278                         if(!(context & 0x40000000)) {
2279                                 cmd = adpt_cmd_from_context(pHba,
2280                                                         readl(reply+12));
2281                                 if(cmd != NULL) {
2282                                         printk(KERN_WARNING"%s: Apparent SCSI cmd in Post Wait Context - cmd=%p context=%x\n", pHba->name, cmd, context);
2283                                 }
2284                         }
2285                         adpt_i2o_post_wait_complete(context, status);
2286                 } else { // SCSI message
2287                         cmd = adpt_cmd_from_context (pHba, readl(reply+12));
2288                         if(cmd != NULL){
2289                                 scsi_dma_unmap(cmd);
2290                                 if(cmd->serial_number != 0) { // If not timedout
2291                                         adpt_i2o_to_scsi(reply, cmd);
2292                                 }
2293                         }
2294                 }
2295                 writel(m, pHba->reply_port);
2296                 wmb();
2297                 rmb();
2298         }
2299         handled = 1;
2300 out:    if(pHba->host)
2301                 spin_unlock_irqrestore(pHba->host->host_lock, flags);
2302         return IRQ_RETVAL(handled);
2303 }
2304
2305 static s32 adpt_scsi_to_i2o(adpt_hba* pHba, struct scsi_cmnd* cmd, struct adpt_device* d)
2306 {
2307         int i;
2308         u32 msg[MAX_MESSAGE_SIZE];
2309         u32* mptr;
2310         u32* lptr;
2311         u32 *lenptr;
2312         int direction;
2313         int scsidir;
2314         int nseg;
2315         u32 len;
2316         u32 reqlen;
2317         s32 rcode;
2318         dma_addr_t addr;
2319
2320         memset(msg, 0 , sizeof(msg));
2321         len = scsi_bufflen(cmd);
2322         direction = 0x00000000; 
2323         
2324         scsidir = 0x00000000;                   // DATA NO XFER
2325         if(len) {
2326                 /*
2327                  * Set SCBFlags to indicate if data is being transferred
2328                  * in or out, or no data transfer
2329                  * Note:  Do not have to verify index is less than 0 since
2330                  * cmd->cmnd[0] is an unsigned char
2331                  */
2332                 switch(cmd->sc_data_direction){
2333                 case DMA_FROM_DEVICE:
2334                         scsidir  =0x40000000;   // DATA IN  (iop<--dev)
2335                         break;
2336                 case DMA_TO_DEVICE:
2337                         direction=0x04000000;   // SGL OUT
2338                         scsidir  =0x80000000;   // DATA OUT (iop-->dev)
2339                         break;
2340                 case DMA_NONE:
2341                         break;
2342                 case DMA_BIDIRECTIONAL:
2343                         scsidir  =0x40000000;   // DATA IN  (iop<--dev)
2344                         // Assume In - and continue;
2345                         break;
2346                 default:
2347                         printk(KERN_WARNING"%s: scsi opcode 0x%x not supported.\n",
2348                              pHba->name, cmd->cmnd[0]);
2349                         cmd->result = (DID_OK <<16) | (INITIATOR_ERROR << 8);
2350                         cmd->scsi_done(cmd);
2351                         return  0;
2352                 }
2353         }
2354         // msg[0] is set later
2355         // I2O_CMD_SCSI_EXEC
2356         msg[1] = ((0xff<<24)|(HOST_TID<<12)|d->tid);
2357         msg[2] = 0;
2358         msg[3] = adpt_cmd_to_context(cmd);  /* Want SCSI control block back */
2359         // Our cards use the transaction context as the tag for queueing
2360         // Adaptec/DPT Private stuff 
2361         msg[4] = I2O_CMD_SCSI_EXEC|(DPT_ORGANIZATION_ID<<16);
2362         msg[5] = d->tid;
2363         /* Direction, disconnect ok | sense data | simple queue , CDBLen */
2364         // I2O_SCB_FLAG_ENABLE_DISCONNECT | 
2365         // I2O_SCB_FLAG_SIMPLE_QUEUE_TAG | 
2366         // I2O_SCB_FLAG_SENSE_DATA_IN_MESSAGE;
2367         msg[6] = scsidir|0x20a00000|cmd->cmd_len;
2368
2369         mptr=msg+7;
2370
2371         // Write SCSI command into the message - always 16 byte block 
2372         memset(mptr, 0,  16);
2373         memcpy(mptr, cmd->cmnd, cmd->cmd_len);
2374         mptr+=4;
2375         lenptr=mptr++;          /* Remember me - fill in when we know */
2376         if (dpt_dma64(pHba)) {
2377                 reqlen = 16;            // SINGLE SGE
2378                 *mptr++ = (0x7C<<24)+(2<<16)+0x02; /* Enable 64 bit */
2379                 *mptr++ = 1 << PAGE_SHIFT;
2380         } else {
2381                 reqlen = 14;            // SINGLE SGE
2382         }
2383         /* Now fill in the SGList and command */
2384
2385         nseg = scsi_dma_map(cmd);
2386         BUG_ON(nseg < 0);
2387         if (nseg) {
2388                 struct scatterlist *sg;
2389
2390                 len = 0;
2391                 scsi_for_each_sg(cmd, sg, nseg, i) {
2392                         lptr = mptr;
2393                         *mptr++ = direction|0x10000000|sg_dma_len(sg);
2394                         len+=sg_dma_len(sg);
2395                         addr = sg_dma_address(sg);
2396                         *mptr++ = dma_low(addr);
2397                         if (dpt_dma64(pHba))
2398                                 *mptr++ = dma_high(addr);
2399                         /* Make this an end of list */
2400                         if (i == nseg - 1)
2401                                 *lptr = direction|0xD0000000|sg_dma_len(sg);
2402                 }
2403                 reqlen = mptr - msg;
2404                 *lenptr = len;
2405                 
2406                 if(cmd->underflow && len != cmd->underflow){
2407                         printk(KERN_WARNING"Cmd len %08X Cmd underflow %08X\n",
2408                                 len, cmd->underflow);
2409                 }
2410         } else {
2411                 *lenptr = len = 0;
2412                 reqlen = 12;
2413         }
2414         
2415         /* Stick the headers on */
2416         msg[0] = reqlen<<16 | ((reqlen > 12) ? SGL_OFFSET_12 : SGL_OFFSET_0);
2417         
2418         // Send it on it's way
2419         rcode = adpt_i2o_post_this(pHba, msg, reqlen<<2);
2420         if (rcode == 0) {
2421                 return 0;
2422         }
2423         return rcode;
2424 }
2425
2426
2427 static s32 adpt_scsi_host_alloc(adpt_hba* pHba, struct scsi_host_template *sht)
2428 {
2429         struct Scsi_Host *host;
2430
2431         host = scsi_host_alloc(sht, sizeof(adpt_hba*));
2432         if (host == NULL) {
2433                 printk("%s: scsi_host_alloc returned NULL\n", pHba->name);
2434                 return -1;
2435         }
2436         host->hostdata[0] = (unsigned long)pHba;
2437         pHba->host = host;
2438
2439         host->irq = pHba->pDev->irq;
2440         /* no IO ports, so don't have to set host->io_port and
2441          * host->n_io_port
2442          */
2443         host->io_port = 0;
2444         host->n_io_port = 0;
2445                                 /* see comments in scsi_host.h */
2446         host->max_id = 16;
2447         host->max_lun = 256;
2448         host->max_channel = pHba->top_scsi_channel + 1;
2449         host->cmd_per_lun = 1;
2450         host->unique_id = (u32)sys_tbl_pa + pHba->unit;
2451         host->sg_tablesize = pHba->sg_tablesize;
2452         host->can_queue = pHba->post_fifo_size;
2453
2454         return 0;
2455 }
2456
2457
2458 static s32 adpt_i2o_to_scsi(void __iomem *reply, struct scsi_cmnd* cmd)
2459 {
2460         adpt_hba* pHba;
2461         u32 hba_status;
2462         u32 dev_status;
2463         u32 reply_flags = readl(reply) & 0xff00; // Leave it shifted up 8 bits 
2464         // I know this would look cleaner if I just read bytes
2465         // but the model I have been using for all the rest of the
2466         // io is in 4 byte words - so I keep that model
2467         u16 detailed_status = readl(reply+16) &0xffff;
2468         dev_status = (detailed_status & 0xff);
2469         hba_status = detailed_status >> 8;
2470
2471         // calculate resid for sg 
2472         scsi_set_resid(cmd, scsi_bufflen(cmd) - readl(reply+20));
2473
2474         pHba = (adpt_hba*) cmd->device->host->hostdata[0];
2475
2476         cmd->sense_buffer[0] = '\0';  // initialize sense valid flag to false
2477
2478         if(!(reply_flags & MSG_FAIL)) {
2479                 switch(detailed_status & I2O_SCSI_DSC_MASK) {
2480                 case I2O_SCSI_DSC_SUCCESS:
2481                         cmd->result = (DID_OK << 16);
2482                         // handle underflow
2483                         if (readl(reply+20) < cmd->underflow) {
2484                                 cmd->result = (DID_ERROR <<16);
2485                                 printk(KERN_WARNING"%s: SCSI CMD underflow\n",pHba->name);
2486                         }
2487                         break;
2488                 case I2O_SCSI_DSC_REQUEST_ABORTED:
2489                         cmd->result = (DID_ABORT << 16);
2490                         break;
2491                 case I2O_SCSI_DSC_PATH_INVALID:
2492                 case I2O_SCSI_DSC_DEVICE_NOT_PRESENT:
2493                 case I2O_SCSI_DSC_SELECTION_TIMEOUT:
2494                 case I2O_SCSI_DSC_COMMAND_TIMEOUT:
2495                 case I2O_SCSI_DSC_NO_ADAPTER:
2496                 case I2O_SCSI_DSC_RESOURCE_UNAVAILABLE:
2497                         printk(KERN_WARNING"%s: SCSI Timeout-Device (%d,%d,%d) hba status=0x%x, dev status=0x%x, cmd=0x%x\n",
2498                                 pHba->name, (u32)cmd->device->channel, (u32)cmd->device->id, (u32)cmd->device->lun, hba_status, dev_status, cmd->cmnd[0]);
2499                         cmd->result = (DID_TIME_OUT << 16);
2500                         break;
2501                 case I2O_SCSI_DSC_ADAPTER_BUSY:
2502                 case I2O_SCSI_DSC_BUS_BUSY:
2503                         cmd->result = (DID_BUS_BUSY << 16);
2504                         break;
2505                 case I2O_SCSI_DSC_SCSI_BUS_RESET:
2506                 case I2O_SCSI_DSC_BDR_MESSAGE_SENT:
2507                         cmd->result = (DID_RESET << 16);
2508                         break;
2509                 case I2O_SCSI_DSC_PARITY_ERROR_FAILURE:
2510                         printk(KERN_WARNING"%s: SCSI CMD parity error\n",pHba->name);
2511                         cmd->result = (DID_PARITY << 16);
2512                         break;
2513                 case I2O_SCSI_DSC_UNABLE_TO_ABORT:
2514                 case I2O_SCSI_DSC_COMPLETE_WITH_ERROR:
2515                 case I2O_SCSI_DSC_UNABLE_TO_TERMINATE:
2516                 case I2O_SCSI_DSC_MR_MESSAGE_RECEIVED:
2517                 case I2O_SCSI_DSC_AUTOSENSE_FAILED:
2518                 case I2O_SCSI_DSC_DATA_OVERRUN:
2519                 case I2O_SCSI_DSC_UNEXPECTED_BUS_FREE:
2520                 case I2O_SCSI_DSC_SEQUENCE_FAILURE:
2521                 case I2O_SCSI_DSC_REQUEST_LENGTH_ERROR:
2522                 case I2O_SCSI_DSC_PROVIDE_FAILURE:
2523                 case I2O_SCSI_DSC_REQUEST_TERMINATED:
2524                 case I2O_SCSI_DSC_IDE_MESSAGE_SENT:
2525                 case I2O_SCSI_DSC_UNACKNOWLEDGED_EVENT:
2526                 case I2O_SCSI_DSC_MESSAGE_RECEIVED:
2527                 case I2O_SCSI_DSC_INVALID_CDB:
2528                 case I2O_SCSI_DSC_LUN_INVALID:
2529                 case I2O_SCSI_DSC_SCSI_TID_INVALID:
2530                 case I2O_SCSI_DSC_FUNCTION_UNAVAILABLE:
2531                 case I2O_SCSI_DSC_NO_NEXUS:
2532                 case I2O_SCSI_DSC_CDB_RECEIVED:
2533                 case I2O_SCSI_DSC_LUN_ALREADY_ENABLED:
2534                 case I2O_SCSI_DSC_QUEUE_FROZEN:
2535                 case I2O_SCSI_DSC_REQUEST_INVALID:
2536                 default:
2537                         printk(KERN_WARNING"%s: SCSI error %0x-Device(%d,%d,%d) hba_status=0x%x, dev_status=0x%x, cmd=0x%x\n",
2538                                 pHba->name, detailed_status & I2O_SCSI_DSC_MASK, (u32)cmd->device->channel, (u32)cmd->device->id, (u32)cmd->device->lun,
2539                                hba_status, dev_status, cmd->cmnd[0]);
2540                         cmd->result = (DID_ERROR << 16);
2541                         break;
2542                 }
2543
2544                 // copy over the request sense data if it was a check
2545                 // condition status
2546                 if (dev_status == SAM_STAT_CHECK_CONDITION) {
2547                         u32 len = min(SCSI_SENSE_BUFFERSIZE, 40);
2548                         // Copy over the sense data
2549                         memcpy_fromio(cmd->sense_buffer, (reply+28) , len);
2550                         if(cmd->sense_buffer[0] == 0x70 /* class 7 */ && 
2551                            cmd->sense_buffer[2] == DATA_PROTECT ){
2552                                 /* This is to handle an array failed */
2553                                 cmd->result = (DID_TIME_OUT << 16);
2554                                 printk(KERN_WARNING"%s: SCSI Data Protect-Device (%d,%d,%d) hba_status=0x%x, dev_status=0x%x, cmd=0x%x\n",
2555                                         pHba->name, (u32)cmd->device->channel, (u32)cmd->device->id, (u32)cmd->device->lun, 
2556                                         hba_status, dev_status, cmd->cmnd[0]);
2557
2558                         }
2559                 }
2560         } else {
2561                 /* In this condtion we could not talk to the tid
2562                  * the card rejected it.  We should signal a retry
2563                  * for a limitted number of retries.
2564                  */
2565                 cmd->result = (DID_TIME_OUT << 16);
2566                 printk(KERN_WARNING"%s: I2O MSG_FAIL - Device (%d,%d,%d) tid=%d, cmd=0x%x\n",
2567                         pHba->name, (u32)cmd->device->channel, (u32)cmd->device->id, (u32)cmd->device->lun,
2568                         ((struct adpt_device*)(cmd->device->hostdata))->tid, cmd->cmnd[0]);
2569         }
2570
2571         cmd->result |= (dev_status);
2572
2573         if(cmd->scsi_done != NULL){
2574                 cmd->scsi_done(cmd);
2575         } 
2576         return cmd->result;
2577 }
2578
2579
2580 static s32 adpt_rescan(adpt_hba* pHba)
2581 {
2582         s32 rcode;
2583         ulong flags = 0;
2584
2585         if(pHba->host)
2586                 spin_lock_irqsave(pHba->host->host_lock, flags);
2587         if ((rcode=adpt_i2o_lct_get(pHba)) < 0)
2588                 goto out;
2589         if ((rcode=adpt_i2o_reparse_lct(pHba)) < 0)
2590                 goto out;
2591         rcode = 0;
2592 out:    if(pHba->host)
2593                 spin_unlock_irqrestore(pHba->host->host_lock, flags);
2594         return rcode;
2595 }
2596
2597
2598 static s32 adpt_i2o_reparse_lct(adpt_hba* pHba)
2599 {
2600         int i;
2601         int max;
2602         int tid;
2603         struct i2o_device *d;
2604         i2o_lct *lct = pHba->lct;
2605         u8 bus_no = 0;
2606         s16 scsi_id;
2607         s16 scsi_lun;
2608         u32 buf[10]; // at least 8 u32's
2609         struct adpt_device* pDev = NULL;
2610         struct i2o_device* pI2o_dev = NULL;
2611         
2612         if (lct == NULL) {
2613                 printk(KERN_ERR "%s: LCT is empty???\n",pHba->name);
2614                 return -1;
2615         }
2616         
2617         max = lct->table_size;  
2618         max -= 3;
2619         max /= 9;
2620
2621         // Mark each drive as unscanned
2622         for (d = pHba->devices; d; d = d->next) {
2623                 pDev =(struct adpt_device*) d->owner;
2624                 if(!pDev){
2625                         continue;
2626                 }
2627                 pDev->state |= DPTI_DEV_UNSCANNED;
2628         }
2629
2630         printk(KERN_INFO "%s: LCT has %d entries.\n", pHba->name,max);
2631         
2632         for(i=0;i<max;i++) {
2633                 if( lct->lct_entry[i].user_tid != 0xfff){
2634                         continue;
2635                 }
2636
2637                 if( lct->lct_entry[i].class_id == I2O_CLASS_RANDOM_BLOCK_STORAGE ||
2638                     lct->lct_entry[i].class_id == I2O_CLASS_SCSI_PERIPHERAL ||
2639                     lct->lct_entry[i].class_id == I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL ){
2640                         tid = lct->lct_entry[i].tid;
2641                         if(adpt_i2o_query_scalar(pHba, tid, 0x8000, -1, buf, 32)<0) {
2642                                 printk(KERN_ERR"%s: Could not query device\n",pHba->name);
2643                                 continue;
2644                         }
2645                         bus_no = buf[0]>>16;
2646                         if (bus_no >= MAX_CHANNEL) {    /* Something wrong skip it */
2647                                 printk(KERN_WARNING
2648                                         "%s: Channel number %d out of range\n",
2649                                         pHba->name, bus_no);
2650                                 continue;
2651                         }
2652
2653                         scsi_id = buf[1];
2654                         scsi_lun = (buf[2]>>8 )&0xff;
2655                         pDev = pHba->channel[bus_no].device[scsi_id];
2656                         /* da lun */
2657                         while(pDev) {
2658                                 if(pDev->scsi_lun == scsi_lun) {
2659                                         break;
2660                                 }
2661                                 pDev = pDev->next_lun;
2662                         }
2663                         if(!pDev ) { // Something new add it
2664                                 d = kmalloc(sizeof(struct i2o_device),
2665                                             GFP_ATOMIC);
2666                                 if(d==NULL)
2667                                 {
2668                                         printk(KERN_CRIT "Out of memory for I2O device data.\n");
2669                                         return -ENOMEM;
2670                                 }
2671                                 
2672                                 d->controller = pHba;
2673                                 d->next = NULL;
2674
2675                                 memcpy(&d->lct_data, &lct->lct_entry[i], sizeof(i2o_lct_entry));
2676
2677                                 d->flags = 0;
2678                                 adpt_i2o_report_hba_unit(pHba, d);
2679                                 adpt_i2o_install_device(pHba, d);
2680         
2681                                 pDev = pHba->channel[bus_no].device[scsi_id];   
2682                                 if( pDev == NULL){
2683                                         pDev =
2684                                           kzalloc(sizeof(struct adpt_device),
2685                                                   GFP_ATOMIC);
2686                                         if(pDev == NULL) {
2687                                                 return -ENOMEM;
2688                                         }
2689                                         pHba->channel[bus_no].device[scsi_id] = pDev;
2690                                 } else {
2691                                         while (pDev->next_lun) {
2692                                                 pDev = pDev->next_lun;
2693                                         }
2694                                         pDev = pDev->next_lun =
2695                                           kzalloc(sizeof(struct adpt_device),
2696                                                   GFP_ATOMIC);
2697                                         if(pDev == NULL) {
2698                                                 return -ENOMEM;
2699                                         }
2700                                 }
2701                                 pDev->tid = d->lct_data.tid;
2702                                 pDev->scsi_channel = bus_no;
2703                                 pDev->scsi_id = scsi_id;
2704                                 pDev->scsi_lun = scsi_lun;
2705                                 pDev->pI2o_dev = d;
2706                                 d->owner = pDev;
2707                                 pDev->type = (buf[0])&0xff;
2708                                 pDev->flags = (buf[0]>>8)&0xff;
2709                                 // Too late, SCSI system has made up it's mind, but what the hey ...
2710                                 if(scsi_id > pHba->top_scsi_id){
2711                                         pHba->top_scsi_id = scsi_id;
2712                                 }
2713                                 if(scsi_lun > pHba->top_scsi_lun){
2714                                         pHba->top_scsi_lun = scsi_lun;
2715                                 }
2716                                 continue;
2717                         } // end of new i2o device
2718
2719                         // We found an old device - check it
2720                         while(pDev) {
2721                                 if(pDev->scsi_lun == scsi_lun) {
2722                                         if(!scsi_device_online(pDev->pScsi_dev)) {
2723                                                 printk(KERN_WARNING"%s: Setting device (%d,%d,%d) back online\n",
2724                                                                 pHba->name,bus_no,scsi_id,scsi_lun);
2725                                                 if (pDev->pScsi_dev) {
2726                                                         scsi_device_set_state(pDev->pScsi_dev, SDEV_RUNNING);
2727                                                 }
2728                                         }
2729                                         d = pDev->pI2o_dev;
2730                                         if(d->lct_data.tid != tid) { // something changed
2731                                                 pDev->tid = tid;
2732                                                 memcpy(&d->lct_data, &lct->lct_entry[i], sizeof(i2o_lct_entry));
2733                                                 if (pDev->pScsi_dev) {
2734                                                         pDev->pScsi_dev->changed = TRUE;
2735                                                         pDev->pScsi_dev->removable = TRUE;
2736                                                 }
2737                                         }
2738                                         // Found it - mark it scanned
2739                                         pDev->state = DPTI_DEV_ONLINE;
2740                                         break;
2741                                 }
2742                                 pDev = pDev->next_lun;
2743                         }
2744                 }
2745         }
2746         for (pI2o_dev = pHba->devices; pI2o_dev; pI2o_dev = pI2o_dev->next) {
2747                 pDev =(struct adpt_device*) pI2o_dev->owner;
2748                 if(!pDev){
2749                         continue;
2750                 }
2751                 // Drive offline drives that previously existed but could not be found
2752                 // in the LCT table
2753                 if (pDev->state & DPTI_DEV_UNSCANNED){
2754                         pDev->state = DPTI_DEV_OFFLINE;
2755                         printk(KERN_WARNING"%s: Device (%d,%d,%d) offline\n",pHba->name,pDev->scsi_channel,pDev->scsi_id,pDev->scsi_lun);
2756                         if (pDev->pScsi_dev) {
2757                                 scsi_device_set_state(pDev->pScsi_dev, SDEV_OFFLINE);
2758                         }
2759                 }
2760         }
2761         return 0;
2762 }
2763
2764 static void adpt_fail_posted_scbs(adpt_hba* pHba)
2765 {
2766         struct scsi_cmnd*       cmd = NULL;
2767         struct scsi_device*     d = NULL;
2768
2769         shost_for_each_device(d, pHba->host) {
2770                 unsigned long flags;
2771                 spin_lock_irqsave(&d->list_lock, flags);
2772                 list_for_each_entry(cmd, &d->cmd_list, list) {
2773                         if(cmd->serial_number == 0){
2774                                 continue;
2775                         }
2776                         cmd->result = (DID_OK << 16) | (QUEUE_FULL <<1);
2777                         cmd->scsi_done(cmd);
2778                 }
2779                 spin_unlock_irqrestore(&d->list_lock, flags);
2780         }
2781 }
2782
2783
2784 /*============================================================================
2785  *  Routines from i2o subsystem
2786  *============================================================================
2787  */
2788
2789
2790
2791 /*
2792  *      Bring an I2O controller into HOLD state. See the spec.
2793  */
2794 static int adpt_i2o_activate_hba(adpt_hba* pHba)
2795 {
2796         int rcode;
2797
2798         if(pHba->initialized ) {
2799                 if (adpt_i2o_status_get(pHba) < 0) {
2800                         if((rcode = adpt_i2o_reset_hba(pHba)) != 0){
2801                                 printk(KERN_WARNING"%s: Could NOT reset.\n", pHba->name);
2802                                 return rcode;
2803                         }
2804                         if (adpt_i2o_status_get(pHba) < 0) {
2805                                 printk(KERN_INFO "HBA not responding.\n");
2806                                 return -1;
2807                         }
2808                 }
2809
2810                 if(pHba->status_block->iop_state == ADAPTER_STATE_FAULTED) {
2811                         printk(KERN_CRIT "%s: hardware fault\n", pHba->name);
2812                         return -1;
2813                 }
2814
2815                 if (pHba->status_block->iop_state == ADAPTER_STATE_READY ||
2816                     pHba->status_block->iop_state == ADAPTER_STATE_OPERATIONAL ||
2817                     pHba->status_block->iop_state == ADAPTER_STATE_HOLD ||
2818                     pHba->status_block->iop_state == ADAPTER_STATE_FAILED) {
2819                         adpt_i2o_reset_hba(pHba);                       
2820                         if (adpt_i2o_status_get(pHba) < 0 || pHba->status_block->iop_state != ADAPTER_STATE_RESET) {
2821                                 printk(KERN_ERR "%s: Failed to initialize.\n", pHba->name);
2822                                 return -1;
2823                         }
2824                 }
2825         } else {
2826                 if((rcode = adpt_i2o_reset_hba(pHba)) != 0){
2827                         printk(KERN_WARNING"%s: Could NOT reset.\n", pHba->name);
2828                         return rcode;
2829                 }
2830
2831         }
2832
2833         if (adpt_i2o_init_outbound_q(pHba) < 0) {
2834                 return -1;
2835         }
2836
2837         /* In HOLD state */
2838         
2839         if (adpt_i2o_hrt_get(pHba) < 0) {
2840                 return -1;
2841         }
2842
2843         return 0;
2844 }
2845
2846 /*
2847  *      Bring a controller online into OPERATIONAL state. 
2848  */
2849  
2850 static int adpt_i2o_online_hba(adpt_hba* pHba)
2851 {
2852         if (adpt_i2o_systab_send(pHba) < 0) {
2853                 adpt_i2o_delete_hba(pHba);
2854                 return -1;
2855         }
2856         /* In READY state */
2857
2858         if (adpt_i2o_enable_hba(pHba) < 0) {
2859                 adpt_i2o_delete_hba(pHba);
2860                 return -1;
2861         }
2862
2863         /* In OPERATIONAL state  */
2864         return 0;
2865 }
2866
2867 static s32 adpt_send_nop(adpt_hba*pHba,u32 m)
2868 {
2869         u32 __iomem *msg;
2870         ulong timeout = jiffies + 5*HZ;
2871
2872         while(m == EMPTY_QUEUE){
2873                 rmb();
2874                 m = readl(pHba->post_port);
2875                 if(m != EMPTY_QUEUE){
2876                         break;
2877                 }
2878                 if(time_after(jiffies,timeout)){
2879                         printk(KERN_ERR "%s: Timeout waiting for message frame!\n",pHba->name);
2880                         return 2;
2881                 }
2882                 schedule_timeout_uninterruptible(1);
2883         }
2884         msg = (u32 __iomem *)(pHba->msg_addr_virt + m);
2885         writel( THREE_WORD_MSG_SIZE | SGL_OFFSET_0,&msg[0]);
2886         writel( I2O_CMD_UTIL_NOP << 24 | HOST_TID << 12 | 0,&msg[1]);
2887         writel( 0,&msg[2]);
2888         wmb();
2889
2890         writel(m, pHba->post_port);
2891         wmb();
2892         return 0;
2893 }
2894
2895 static s32 adpt_i2o_init_outbound_q(adpt_hba* pHba)
2896 {
2897         u8 *status;
2898         dma_addr_t addr;
2899         u32 __iomem *msg = NULL;
2900         int i;
2901         ulong timeout = jiffies + TMOUT_INITOUTBOUND*HZ;
2902         u32 m;
2903
2904         do {
2905                 rmb();
2906                 m = readl(pHba->post_port);
2907                 if (m != EMPTY_QUEUE) {
2908                         break;
2909                 }
2910
2911                 if(time_after(jiffies,timeout)){
2912                         printk(KERN_WARNING"%s: Timeout waiting for message frame\n",pHba->name);
2913                         return -ETIMEDOUT;
2914                 }
2915                 schedule_timeout_uninterruptible(1);
2916         } while(m == EMPTY_QUEUE);
2917
2918         msg=(u32 __iomem *)(pHba->msg_addr_virt+m);
2919
2920         status = dma_alloc_coherent(&pHba->pDev->dev, 4, &addr, GFP_KERNEL);
2921         if (!status) {
2922                 adpt_send_nop(pHba, m);
2923                 printk(KERN_WARNING"%s: IOP reset failed - no free memory.\n",
2924                         pHba->name);
2925                 return -ENOMEM;
2926         }
2927         memset(status, 0, 4);
2928
2929         writel(EIGHT_WORD_MSG_SIZE| SGL_OFFSET_6, &msg[0]);
2930         writel(I2O_CMD_OUTBOUND_INIT<<24 | HOST_TID<<12 | ADAPTER_TID, &msg[1]);
2931         writel(0, &msg[2]);
2932         writel(0x0106, &msg[3]);        /* Transaction context */
2933         writel(4096, &msg[4]);          /* Host page frame size */
2934         writel((REPLY_FRAME_SIZE)<<16|0x80, &msg[5]);   /* Outbound msg frame size and Initcode */
2935         writel(0xD0000004, &msg[6]);            /* Simple SG LE, EOB */
2936         writel((u32)addr, &msg[7]);
2937
2938         writel(m, pHba->post_port);
2939         wmb();
2940
2941         // Wait for the reply status to come back
2942         do {
2943                 if (*status) {
2944                         if (*status != 0x01 /*I2O_EXEC_OUTBOUND_INIT_IN_PROGRESS*/) {
2945                                 break;
2946                         }
2947                 }
2948                 rmb();
2949                 if(time_after(jiffies,timeout)){
2950                         printk(KERN_WARNING"%s: Timeout Initializing\n",pHba->name);
2951                         /* We lose 4 bytes of "status" here, but we
2952                            cannot free these because controller may
2953                            awake and corrupt those bytes at any time */
2954                         /* dma_free_coherent(&pHba->pDev->dev, 4, status, addr); */
2955                         return -ETIMEDOUT;
2956                 }
2957                 schedule_timeout_uninterruptible(1);
2958         } while (1);
2959
2960         // If the command was successful, fill the fifo with our reply
2961         // message packets
2962         if(*status != 0x04 /*I2O_EXEC_OUTBOUND_INIT_COMPLETE*/) {
2963                 dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
2964                 return -2;
2965         }
2966         dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
2967
2968         if(pHba->reply_pool != NULL) {
2969                 dma_free_coherent(&pHba->pDev->dev,
2970                         pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
2971                         pHba->reply_pool, pHba->reply_pool_pa);
2972         }
2973
2974         pHba->reply_pool = dma_alloc_coherent(&pHba->pDev->dev,
2975                                 pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
2976                                 &pHba->reply_pool_pa, GFP_KERNEL);
2977         if (!pHba->reply_pool) {
2978                 printk(KERN_ERR "%s: Could not allocate reply pool\n", pHba->name);
2979                 return -ENOMEM;
2980         }
2981         memset(pHba->reply_pool, 0 , pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4);
2982
2983         for(i = 0; i < pHba->reply_fifo_size; i++) {
2984                 writel(pHba->reply_pool_pa + (i * REPLY_FRAME_SIZE * 4),
2985                         pHba->reply_port);
2986                 wmb();
2987         }
2988         adpt_i2o_status_get(pHba);
2989         return 0;
2990 }
2991
2992
2993 /*
2994  * I2O System Table.  Contains information about
2995  * all the IOPs in the system.  Used to inform IOPs
2996  * about each other's existence.
2997  *
2998  * sys_tbl_ver is the CurrentChangeIndicator that is
2999  * used by IOPs to track changes.
3000  */
3001
3002
3003
3004 static s32 adpt_i2o_status_get(adpt_hba* pHba)
3005 {
3006         ulong timeout;
3007         u32 m;
3008         u32 __iomem *msg;
3009         u8 *status_block=NULL;
3010
3011         if(pHba->status_block == NULL) {
3012                 pHba->status_block = dma_alloc_coherent(&pHba->pDev->dev,
3013                                         sizeof(i2o_status_block),
3014                                         &pHba->status_block_pa, GFP_KERNEL);
3015                 if(pHba->status_block == NULL) {
3016                         printk(KERN_ERR
3017                         "dpti%d: Get Status Block failed; Out of memory. \n", 
3018                         pHba->unit);
3019                         return -ENOMEM;
3020                 }
3021         }
3022         memset(pHba->status_block, 0, sizeof(i2o_status_block));
3023         status_block = (u8*)(pHba->status_block);
3024         timeout = jiffies+TMOUT_GETSTATUS*HZ;
3025         do {
3026                 rmb();
3027                 m = readl(pHba->post_port);
3028                 if (m != EMPTY_QUEUE) {
3029                         break;
3030                 }
3031                 if(time_after(jiffies,timeout)){
3032                         printk(KERN_ERR "%s: Timeout waiting for message !\n",
3033                                         pHba->name);
3034                         return -ETIMEDOUT;
3035                 }
3036                 schedule_timeout_uninterruptible(1);
3037         } while(m==EMPTY_QUEUE);
3038
3039         
3040         msg=(u32 __iomem *)(pHba->msg_addr_virt+m);
3041
3042         writel(NINE_WORD_MSG_SIZE|SGL_OFFSET_0, &msg[0]);
3043         writel(I2O_CMD_STATUS_GET<<24|HOST_TID<<12|ADAPTER_TID, &msg[1]);
3044         writel(1, &msg[2]);
3045         writel(0, &msg[3]);
3046         writel(0, &msg[4]);
3047         writel(0, &msg[5]);
3048         writel( dma_low(pHba->status_block_pa), &msg[6]);
3049         writel( dma_high(pHba->status_block_pa), &msg[7]);
3050         writel(sizeof(i2o_status_block), &msg[8]); // 88 bytes
3051
3052         //post message
3053         writel(m, pHba->post_port);
3054         wmb();
3055
3056         while(status_block[87]!=0xff){
3057                 if(time_after(jiffies,timeout)){
3058                         printk(KERN_ERR"dpti%d: Get status timeout.\n",
3059                                 pHba->unit);
3060                         return -ETIMEDOUT;
3061                 }
3062                 rmb();
3063                 schedule_timeout_uninterruptible(1);
3064         }
3065
3066         // Set up our number of outbound and inbound messages
3067         pHba->post_fifo_size = pHba->status_block->max_inbound_frames;
3068         if (pHba->post_fifo_size > MAX_TO_IOP_MESSAGES) {
3069                 pHba->post_fifo_size = MAX_TO_IOP_MESSAGES;
3070         }
3071
3072         pHba->reply_fifo_size = pHba->status_block->max_outbound_frames;
3073         if (pHba->reply_fifo_size > MAX_FROM_IOP_MESSAGES) {
3074                 pHba->reply_fifo_size = MAX_FROM_IOP_MESSAGES;
3075         }
3076
3077         // Calculate the Scatter Gather list size
3078         if (dpt_dma64(pHba)) {
3079                 pHba->sg_tablesize
3080                   = ((pHba->status_block->inbound_frame_size * 4
3081                   - 14 * sizeof(u32))
3082                   / (sizeof(struct sg_simple_element) + sizeof(u32)));
3083         } else {
3084                 pHba->sg_tablesize
3085                   = ((pHba->status_block->inbound_frame_size * 4
3086                   - 12 * sizeof(u32))
3087                   / sizeof(struct sg_simple_element));
3088         }
3089         if (pHba->sg_tablesize > SG_LIST_ELEMENTS) {
3090                 pHba->sg_tablesize = SG_LIST_ELEMENTS;
3091         }
3092
3093
3094 #ifdef DEBUG
3095         printk("dpti%d: State = ",pHba->unit);
3096         switch(pHba->status_block->iop_state) {
3097                 case 0x01:
3098                         printk("INIT\n");
3099                         break;
3100                 case 0x02:
3101                         printk("RESET\n");
3102                         break;
3103                 case 0x04:
3104                         printk("HOLD\n");
3105                         break;
3106                 case 0x05:
3107                         printk("READY\n");
3108                         break;
3109                 case 0x08:
3110                         printk("OPERATIONAL\n");
3111                         break;
3112                 case 0x10:
3113                         printk("FAILED\n");
3114                         break;
3115                 case 0x11:
3116                         printk("FAULTED\n");
3117                         break;
3118                 default:
3119                         printk("%x (unknown!!)\n",pHba->status_block->iop_state);
3120         }
3121 #endif
3122         return 0;
3123 }
3124
3125 /*
3126  * Get the IOP's Logical Configuration Table
3127  */
3128 static int adpt_i2o_lct_get(adpt_hba* pHba)
3129 {
3130         u32 msg[8];
3131         int ret;
3132         u32 buf[16];
3133
3134         if ((pHba->lct_size == 0) || (pHba->lct == NULL)){
3135                 pHba->lct_size = pHba->status_block->expected_lct_size;
3136         }
3137         do {
3138                 if (pHba->lct == NULL) {
3139                         pHba->lct = dma_alloc_coherent(&pHba->pDev->dev,
3140                                         pHba->lct_size, &pHba->lct_pa,
3141                                         GFP_ATOMIC);
3142                         if(pHba->lct == NULL) {
3143                                 printk(KERN_CRIT "%s: Lct Get failed. Out of memory.\n",
3144                                         pHba->name);
3145                                 return -ENOMEM;
3146                         }
3147                 }
3148                 memset(pHba->lct, 0, pHba->lct_size);
3149
3150                 msg[0] = EIGHT_WORD_MSG_SIZE|SGL_OFFSET_6;
3151                 msg[1] = I2O_CMD_LCT_NOTIFY<<24 | HOST_TID<<12 | ADAPTER_TID;
3152                 msg[2] = 0;
3153                 msg[3] = 0;
3154                 msg[4] = 0xFFFFFFFF;    /* All devices */
3155                 msg[5] = 0x00000000;    /* Report now */
3156                 msg[6] = 0xD0000000|pHba->lct_size;
3157                 msg[7] = (u32)pHba->lct_pa;
3158
3159                 if ((ret=adpt_i2o_post_wait(pHba, msg, sizeof(msg), 360))) {
3160                         printk(KERN_ERR "%s: LCT Get failed (status=%#10x.\n", 
3161                                 pHba->name, ret);       
3162                         printk(KERN_ERR"Adaptec: Error Reading Hardware.\n");
3163                         return ret;
3164                 }
3165
3166                 if ((pHba->lct->table_size << 2) > pHba->lct_size) {
3167                         pHba->lct_size = pHba->lct->table_size << 2;
3168                         dma_free_coherent(&pHba->pDev->dev, pHba->lct_size,
3169                                         pHba->lct, pHba->lct_pa);
3170                         pHba->lct = NULL;
3171                 }
3172         } while (pHba->lct == NULL);
3173
3174         PDEBUG("%s: Hardware resource table read.\n", pHba->name);
3175
3176
3177         // I2O_DPT_EXEC_IOP_BUFFERS_GROUP_NO;
3178         if(adpt_i2o_query_scalar(pHba, 0 , 0x8000, -1, buf, sizeof(buf))>=0) {
3179                 pHba->FwDebugBufferSize = buf[1];
3180                 pHba->FwDebugBuffer_P = ioremap(pHba->base_addr_phys + buf[0],
3181                                                 pHba->FwDebugBufferSize);
3182                 if (pHba->FwDebugBuffer_P) {
3183                         pHba->FwDebugFlags_P     = pHba->FwDebugBuffer_P +
3184                                                         FW_DEBUG_FLAGS_OFFSET;
3185                         pHba->FwDebugBLEDvalue_P = pHba->FwDebugBuffer_P +
3186                                                         FW_DEBUG_BLED_OFFSET;
3187                         pHba->FwDebugBLEDflag_P  = pHba->FwDebugBLEDvalue_P + 1;
3188                         pHba->FwDebugStrLength_P = pHba->FwDebugBuffer_P +
3189                                                 FW_DEBUG_STR_LENGTH_OFFSET;
3190                         pHba->FwDebugBuffer_P += buf[2]; 
3191                         pHba->FwDebugFlags = 0;
3192                 }
3193         }
3194
3195         return 0;
3196 }
3197
3198 static int adpt_i2o_build_sys_table(void)
3199 {
3200         adpt_hba* pHba = hba_chain;
3201         int count = 0;
3202
3203         if (sys_tbl)
3204                 dma_free_coherent(&pHba->pDev->dev, sys_tbl_len,
3205                                         sys_tbl, sys_tbl_pa);
3206
3207         sys_tbl_len = sizeof(struct i2o_sys_tbl) +      // Header + IOPs
3208                                 (hba_count) * sizeof(struct i2o_sys_tbl_entry);
3209
3210         sys_tbl = dma_alloc_coherent(&pHba->pDev->dev,
3211                                 sys_tbl_len, &sys_tbl_pa, GFP_KERNEL);
3212         if (!sys_tbl) {
3213                 printk(KERN_WARNING "SysTab Set failed. Out of memory.\n");     
3214                 return -ENOMEM;
3215         }
3216         memset(sys_tbl, 0, sys_tbl_len);
3217
3218         sys_tbl->num_entries = hba_count;
3219         sys_tbl->version = I2OVERSION;
3220         sys_tbl->change_ind = sys_tbl_ind++;
3221
3222         for(pHba = hba_chain; pHba; pHba = pHba->next) {
3223                 u64 addr;
3224                 // Get updated Status Block so we have the latest information
3225                 if (adpt_i2o_status_get(pHba)) {
3226                         sys_tbl->num_entries--;
3227                         continue; // try next one       
3228                 }
3229
3230                 sys_tbl->iops[count].org_id = pHba->status_block->org_id;
3231                 sys_tbl->iops[count].iop_id = pHba->unit + 2;
3232                 sys_tbl->iops[count].seg_num = 0;
3233                 sys_tbl->iops[count].i2o_version = pHba->status_block->i2o_version;
3234                 sys_tbl->iops[count].iop_state = pHba->status_block->iop_state;
3235                 sys_tbl->iops[count].msg_type = pHba->status_block->msg_type;
3236                 sys_tbl->iops[count].frame_size = pHba->status_block->inbound_frame_size;
3237                 sys_tbl->iops[count].last_changed = sys_tbl_ind - 1; // ??
3238                 sys_tbl->iops[count].iop_capabilities = pHba->status_block->iop_capabilities;
3239                 addr = pHba->base_addr_phys + 0x40;
3240                 sys_tbl->iops[count].inbound_low = dma_low(addr);
3241                 sys_tbl->iops[count].inbound_high = dma_high(addr);
3242
3243                 count++;
3244         }
3245
3246 #ifdef DEBUG
3247 {
3248         u32 *table = (u32*)sys_tbl;
3249         printk(KERN_DEBUG"sys_tbl_len=%d in 32bit words\n",(sys_tbl_len >>2));
3250         for(count = 0; count < (sys_tbl_len >>2); count++) {
3251                 printk(KERN_INFO "sys_tbl[%d] = %0#10x\n", 
3252                         count, table[count]);
3253         }
3254 }
3255 #endif
3256
3257         return 0;
3258 }
3259
3260
3261 /*
3262  *       Dump the information block associated with a given unit (TID)
3263  */
3264  
3265 static void adpt_i2o_report_hba_unit(adpt_hba* pHba, struct i2o_device *d)
3266 {
3267         char buf[64];
3268         int unit = d->lct_data.tid;
3269
3270         printk(KERN_INFO "TID %3.3d ", unit);
3271
3272         if(adpt_i2o_query_scalar(pHba, unit, 0xF100, 3, buf, 16)>=0)
3273         {
3274                 buf[16]=0;
3275                 printk(" Vendor: %-12.12s", buf);
3276         }
3277         if(adpt_i2o_query_scalar(pHba, unit, 0xF100, 4, buf, 16)>=0)
3278         {
3279                 buf[16]=0;
3280                 printk(" Device: %-12.12s", buf);
3281         }
3282         if(adpt_i2o_query_scalar(pHba, unit, 0xF100, 6, buf, 8)>=0)
3283         {
3284                 buf[8]=0;
3285                 printk(" Rev: %-12.12s\n", buf);
3286         }
3287 #ifdef DEBUG
3288          printk(KERN_INFO "\tClass: %.21s\n", adpt_i2o_get_class_name(d->lct_data.class_id));
3289          printk(KERN_INFO "\tSubclass: 0x%04X\n", d->lct_data.sub_class);
3290          printk(KERN_INFO "\tFlags: ");
3291
3292          if(d->lct_data.device_flags&(1<<0))
3293                   printk("C");       // ConfigDialog requested
3294          if(d->lct_data.device_flags&(1<<1))
3295                   printk("U");       // Multi-user capable
3296          if(!(d->lct_data.device_flags&(1<<4)))
3297                   printk("P");       // Peer service enabled!
3298          if(!(d->lct_data.device_flags&(1<<5)))
3299                   printk("M");       // Mgmt service enabled!
3300          printk("\n");
3301 #endif
3302 }
3303
3304 #ifdef DEBUG
3305 /*
3306  *      Do i2o class name lookup
3307  */
3308 static const char *adpt_i2o_get_class_name(int class)
3309 {
3310         int idx = 16;
3311         static char *i2o_class_name[] = {
3312                 "Executive",
3313                 "Device Driver Module",
3314                 "Block Device",
3315                 "Tape Device",
3316                 "LAN Interface",
3317                 "WAN Interface",
3318                 "Fibre Channel Port",
3319                 "Fibre Channel Device",
3320                 "SCSI Device",
3321                 "ATE Port",
3322                 "ATE Device",
3323                 "Floppy Controller",
3324                 "Floppy Device",
3325                 "Secondary Bus Port",
3326                 "Peer Transport Agent",
3327                 "Peer Transport",
3328                 "Unknown"
3329         };
3330         
3331         switch(class&0xFFF) {
3332         case I2O_CLASS_EXECUTIVE:
3333                 idx = 0; break;
3334         case I2O_CLASS_DDM:
3335                 idx = 1; break;
3336         case I2O_CLASS_RANDOM_BLOCK_STORAGE:
3337                 idx = 2; break;
3338         case I2O_CLASS_SEQUENTIAL_STORAGE:
3339                 idx = 3; break;
3340         case I2O_CLASS_LAN:
3341                 idx = 4; break;
3342         case I2O_CLASS_WAN:
3343                 idx = 5; break;
3344         case I2O_CLASS_FIBRE_CHANNEL_PORT:
3345                 idx = 6; break;
3346         case I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL:
3347                 idx = 7; break;
3348         case I2O_CLASS_SCSI_PERIPHERAL:
3349                 idx = 8; break;
3350         case I2O_CLASS_ATE_PORT:
3351                 idx = 9; break;
3352         case I2O_CLASS_ATE_PERIPHERAL:
3353                 idx = 10; break;
3354         case I2O_CLASS_FLOPPY_CONTROLLER:
3355                 idx = 11; break;
3356         case I2O_CLASS_FLOPPY_DEVICE:
3357                 idx = 12; break;
3358         case I2O_CLASS_BUS_ADAPTER_PORT:
3359                 idx = 13; break;
3360         case I2O_CLASS_PEER_TRANSPORT_AGENT:
3361                 idx = 14; break;
3362         case I2O_CLASS_PEER_TRANSPORT:
3363                 idx = 15; break;
3364         }
3365         return i2o_class_name[idx];
3366 }
3367 #endif
3368
3369
3370 static s32 adpt_i2o_hrt_get(adpt_hba* pHba)
3371 {
3372         u32 msg[6];
3373         int ret, size = sizeof(i2o_hrt);
3374
3375         do {
3376                 if (pHba->hrt == NULL) {
3377                         pHba->hrt = dma_alloc_coherent(&pHba->pDev->dev,
3378                                         size, &pHba->hrt_pa, GFP_KERNEL);
3379                         if (pHba->hrt == NULL) {
3380                                 printk(KERN_CRIT "%s: Hrt Get failed; Out of memory.\n", pHba->name);
3381                                 return -ENOMEM;
3382                         }
3383                 }
3384
3385                 msg[0]= SIX_WORD_MSG_SIZE| SGL_OFFSET_4;
3386                 msg[1]= I2O_CMD_HRT_GET<<24 | HOST_TID<<12 | ADAPTER_TID;
3387                 msg[2]= 0;
3388                 msg[3]= 0;
3389                 msg[4]= (0xD0000000 | size);    /* Simple transaction */
3390                 msg[5]= (u32)pHba->hrt_pa;      /* Dump it here */
3391
3392                 if ((ret = adpt_i2o_post_wait(pHba, msg, sizeof(msg),20))) {
3393                         printk(KERN_ERR "%s: Unable to get HRT (status=%#10x)\n", pHba->name, ret);
3394                         return ret;
3395                 }
3396
3397                 if (pHba->hrt->num_entries * pHba->hrt->entry_len << 2 > size) {
3398                         int newsize = pHba->hrt->num_entries * pHba->hrt->entry_len << 2;
3399                         dma_free_coherent(&pHba->pDev->dev, size,
3400                                 pHba->hrt, pHba->hrt_pa);
3401                         size = newsize;
3402                         pHba->hrt = NULL;
3403                 }
3404         } while(pHba->hrt == NULL);
3405         return 0;
3406 }                                                                                                                                       
3407
3408 /*
3409  *       Query one scalar group value or a whole scalar group.
3410  */                     
3411 static int adpt_i2o_query_scalar(adpt_hba* pHba, int tid, 
3412                         int group, int field, void *buf, int buflen)
3413 {
3414         u16 opblk[] = { 1, 0, I2O_PARAMS_FIELD_GET, group, 1, field };
3415         u8 *opblk_va;
3416         dma_addr_t opblk_pa;
3417         u8 *resblk_va;
3418         dma_addr_t resblk_pa;
3419
3420         int size;
3421
3422         /* 8 bytes for header */
3423         resblk_va = dma_alloc_coherent(&pHba->pDev->dev,
3424                         sizeof(u8) * (8 + buflen), &resblk_pa, GFP_KERNEL);
3425         if (resblk_va == NULL) {
3426                 printk(KERN_CRIT "%s: query scalar failed; Out of memory.\n", pHba->name);
3427                 return -ENOMEM;
3428         }
3429
3430         opblk_va = dma_alloc_coherent(&pHba->pDev->dev,
3431                         sizeof(opblk), &opblk_pa, GFP_KERNEL);
3432         if (opblk_va == NULL) {
3433                 dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
3434                         resblk_va, resblk_pa);
3435                 printk(KERN_CRIT "%s: query operatio failed; Out of memory.\n",
3436                         pHba->name);
3437                 return -ENOMEM;
3438         }
3439         if (field == -1)                /* whole group */
3440                         opblk[4] = -1;
3441
3442         memcpy(opblk_va, opblk, sizeof(opblk));
3443         size = adpt_i2o_issue_params(I2O_CMD_UTIL_PARAMS_GET, pHba, tid, 
3444                 opblk_va, opblk_pa, sizeof(opblk),
3445                 resblk_va, resblk_pa, sizeof(u8)*(8+buflen));
3446         dma_free_coherent(&pHba->pDev->dev, sizeof(opblk), opblk_va, opblk_pa);
3447         if (size == -ETIME) {
3448                 dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
3449                                                         resblk_va, resblk_pa);
3450                 printk(KERN_WARNING "%s: issue params failed; Timed out.\n", pHba->name);
3451                 return -ETIME;
3452         } else if (size == -EINTR) {
3453                 dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
3454                                                         resblk_va, resblk_pa);
3455                 printk(KERN_WARNING "%s: issue params failed; Interrupted.\n", pHba->name);
3456                 return -EINTR;
3457         }
3458                         
3459         memcpy(buf, resblk_va+8, buflen);  /* cut off header */
3460
3461         dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
3462                                                 resblk_va, resblk_pa);
3463         if (size < 0)
3464                 return size;    
3465
3466         return buflen;
3467 }
3468
3469
3470 /*      Issue UTIL_PARAMS_GET or UTIL_PARAMS_SET
3471  *
3472  *      This function can be used for all UtilParamsGet/Set operations.
3473  *      The OperationBlock is given in opblk-buffer, 
3474  *      and results are returned in resblk-buffer.
3475  *      Note that the minimum sized resblk is 8 bytes and contains
3476  *      ResultCount, ErrorInfoSize, BlockStatus and BlockSize.
3477  */
3478 static int adpt_i2o_issue_params(int cmd, adpt_hba* pHba, int tid, 
3479                   void *opblk_va,  dma_addr_t opblk_pa, int oplen,
3480                 void *resblk_va, dma_addr_t resblk_pa, int reslen)
3481 {
3482         u32 msg[9]; 
3483         u32 *res = (u32 *)resblk_va;
3484         int wait_status;
3485
3486         msg[0] = NINE_WORD_MSG_SIZE | SGL_OFFSET_5;
3487         msg[1] = cmd << 24 | HOST_TID << 12 | tid; 
3488         msg[2] = 0;
3489         msg[3] = 0;
3490         msg[4] = 0;
3491         msg[5] = 0x54000000 | oplen;    /* OperationBlock */
3492         msg[6] = (u32)opblk_pa;
3493         msg[7] = 0xD0000000 | reslen;   /* ResultBlock */
3494         msg[8] = (u32)resblk_pa;
3495
3496         if ((wait_status = adpt_i2o_post_wait(pHba, msg, sizeof(msg), 20))) {
3497                 printk("adpt_i2o_issue_params: post_wait failed (%p)\n", resblk_va);
3498                 return wait_status;     /* -DetailedStatus */
3499         }
3500
3501         if (res[1]&0x00FF0000) {        /* BlockStatus != SUCCESS */
3502                 printk(KERN_WARNING "%s: %s - Error:\n  ErrorInfoSize = 0x%02x, "
3503                         "BlockStatus = 0x%02x, BlockSize = 0x%04x\n",
3504                         pHba->name,
3505                         (cmd == I2O_CMD_UTIL_PARAMS_SET) ? "PARAMS_SET"
3506                                                          : "PARAMS_GET",   
3507                         res[1]>>24, (res[1]>>16)&0xFF, res[1]&0xFFFF);
3508                 return -((res[1] >> 16) & 0xFF); /* -BlockStatus */
3509         }
3510
3511          return 4 + ((res[1] & 0x0000FFFF) << 2); /* bytes used in resblk */ 
3512 }
3513
3514
3515 static s32 adpt_i2o_quiesce_hba(adpt_hba* pHba)
3516 {
3517         u32 msg[4];
3518         int ret;
3519
3520         adpt_i2o_status_get(pHba);
3521
3522         /* SysQuiesce discarded if IOP not in READY or OPERATIONAL state */
3523
3524         if((pHba->status_block->iop_state != ADAPTER_STATE_READY) &&
3525            (pHba->status_block->iop_state != ADAPTER_STATE_OPERATIONAL)){
3526                 return 0;
3527         }
3528
3529         msg[0] = FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
3530         msg[1] = I2O_CMD_SYS_QUIESCE<<24|HOST_TID<<12|ADAPTER_TID;
3531         msg[2] = 0;
3532         msg[3] = 0;
3533
3534         if((ret = adpt_i2o_post_wait(pHba, msg, sizeof(msg), 240))) {
3535                 printk(KERN_INFO"dpti%d: Unable to quiesce (status=%#x).\n",
3536                                 pHba->unit, -ret);
3537         } else {
3538                 printk(KERN_INFO"dpti%d: Quiesced.\n",pHba->unit);
3539         }
3540
3541         adpt_i2o_status_get(pHba);
3542         return ret;
3543 }
3544
3545
3546 /* 
3547  * Enable IOP. Allows the IOP to resume external operations.
3548  */
3549 static int adpt_i2o_enable_hba(adpt_hba* pHba)
3550 {
3551         u32 msg[4];
3552         int ret;
3553         
3554         adpt_i2o_status_get(pHba);
3555         if(!pHba->status_block){
3556                 return -ENOMEM;
3557         }
3558         /* Enable only allowed on READY state */
3559         if(pHba->status_block->iop_state == ADAPTER_STATE_OPERATIONAL)
3560                 return 0;
3561
3562         if(pHba->status_block->iop_state != ADAPTER_STATE_READY)
3563                 return -EINVAL;
3564
3565         msg[0]=FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
3566         msg[1]=I2O_CMD_SYS_ENABLE<<24|HOST_TID<<12|ADAPTER_TID;
3567         msg[2]= 0;
3568         msg[3]= 0;
3569
3570         if ((ret = adpt_i2o_post_wait(pHba, msg, sizeof(msg), 240))) {
3571                 printk(KERN_WARNING"%s: Could not enable (status=%#10x).\n", 
3572                         pHba->name, ret);
3573         } else {
3574                 PDEBUG("%s: Enabled.\n", pHba->name);
3575         }
3576
3577         adpt_i2o_status_get(pHba);
3578         return ret;
3579 }
3580
3581
3582 static int adpt_i2o_systab_send(adpt_hba* pHba)
3583 {
3584          u32 msg[12];
3585          int ret;
3586
3587         msg[0] = I2O_MESSAGE_SIZE(12) | SGL_OFFSET_6;
3588         msg[1] = I2O_CMD_SYS_TAB_SET<<24 | HOST_TID<<12 | ADAPTER_TID;
3589         msg[2] = 0;
3590         msg[3] = 0;
3591         msg[4] = (0<<16) | ((pHba->unit+2) << 12); /* Host 0 IOP ID (unit + 2) */
3592         msg[5] = 0;                                /* Segment 0 */
3593
3594         /* 
3595          * Provide three SGL-elements:
3596          * System table (SysTab), Private memory space declaration and 
3597          * Private i/o space declaration  
3598          */
3599         msg[6] = 0x54000000 | sys_tbl_len;
3600         msg[7] = (u32)sys_tbl_pa;
3601         msg[8] = 0x54000000 | 0;
3602         msg[9] = 0;
3603         msg[10] = 0xD4000000 | 0;
3604         msg[11] = 0;
3605
3606         if ((ret=adpt_i2o_post_wait(pHba, msg, sizeof(msg), 120))) {
3607                 printk(KERN_INFO "%s: Unable to set SysTab (status=%#10x).\n", 
3608                         pHba->name, ret);
3609         }
3610 #ifdef DEBUG
3611         else {
3612                 PINFO("%s: SysTab set.\n", pHba->name);
3613         }
3614 #endif
3615
3616         return ret;     
3617  }
3618
3619
3620 /*============================================================================
3621  *
3622  *============================================================================
3623  */
3624
3625
3626 #ifdef UARTDELAY 
3627
3628 static static void adpt_delay(int millisec)
3629 {
3630         int i;
3631         for (i = 0; i < millisec; i++) {
3632                 udelay(1000);   /* delay for one millisecond */
3633         }
3634 }
3635
3636 #endif
3637
3638 static struct scsi_host_template driver_template = {
3639         .module                 = THIS_MODULE,
3640         .name                   = "dpt_i2o",
3641         .proc_name              = "dpt_i2o",
3642         .proc_info              = adpt_proc_info,
3643         .info                   = adpt_info,
3644         .queuecommand           = adpt_queue,
3645         .eh_abort_handler       = adpt_abort,
3646         .eh_device_reset_handler = adpt_device_reset,
3647         .eh_bus_reset_handler   = adpt_bus_reset,
3648         .eh_host_reset_handler  = adpt_reset,
3649         .bios_param             = adpt_bios_param,
3650         .slave_configure        = adpt_slave_configure,
3651         .can_queue              = MAX_TO_IOP_MESSAGES,
3652         .this_id                = 7,
3653         .cmd_per_lun            = 1,
3654         .use_clustering         = ENABLE_CLUSTERING,
3655 };
3656
3657 static int __init adpt_init(void)
3658 {
3659         int             error;
3660         adpt_hba        *pHba, *next;
3661
3662         printk("Loading Adaptec I2O RAID: Version " DPT_I2O_VERSION "\n");
3663
3664         error = adpt_detect(&driver_template);
3665         if (error < 0)
3666                 return error;
3667         if (hba_chain == NULL)
3668                 return -ENODEV;
3669
3670         for (pHba = hba_chain; pHba; pHba = pHba->next) {
3671                 error = scsi_add_host(pHba->host, &pHba->pDev->dev);
3672                 if (error)
3673                         goto fail;
3674                 scsi_scan_host(pHba->host);
3675         }
3676         return 0;
3677 fail:
3678         for (pHba = hba_chain; pHba; pHba = next) {
3679                 next = pHba->next;
3680                 scsi_remove_host(pHba->host);
3681         }
3682         return error;
3683 }
3684
3685 static void __exit adpt_exit(void)
3686 {
3687         adpt_hba        *pHba, *next;
3688
3689         for (pHba = hba_chain; pHba; pHba = pHba->next)
3690                 scsi_remove_host(pHba->host);
3691         for (pHba = hba_chain; pHba; pHba = next) {
3692                 next = pHba->next;
3693                 adpt_release(pHba->host);
3694         }
3695 }
3696
3697 module_init(adpt_init);
3698 module_exit(adpt_exit);
3699
3700 MODULE_LICENSE("GPL");