6194ed5d02c4e694bc2bfbe3faf9a56860a2ade5
[linux-3.10.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/smp_lock.h>
53 #include <linux/spinlock.h>
54 #include <linux/dma-mapping.h>
55
56 #include <linux/timer.h>
57 #include <linux/string.h>
58 #include <linux/ioport.h>
59 #include <linux/mutex.h>
60
61 #include <asm/processor.h>      /* for boot_cpu_data */
62 #include <asm/pgtable.h>
63 #include <asm/io.h>             /* for virt_to_bus, etc. */
64
65 #include <scsi/scsi.h>
66 #include <scsi/scsi_cmnd.h>
67 #include <scsi/scsi_device.h>
68 #include <scsi/scsi_host.h>
69 #include <scsi/scsi_tcq.h>
70
71 #include "dpt/dptsig.h"
72 #include "dpti.h"
73
74 /*============================================================================
75  * Create a binary signature - this is read by dptsig
76  * Needed for our management apps
77  *============================================================================
78  */
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 #ifdef CONFIG_COMPAT
118 static long compat_adpt_ioctl(struct file *, unsigned int, unsigned long);
119 #endif
120
121 static const struct file_operations adpt_fops = {
122         .ioctl          = adpt_ioctl,
123         .open           = adpt_open,
124         .release        = adpt_close,
125 #ifdef CONFIG_COMPAT
126         .compat_ioctl   = compat_adpt_ioctl,
127 #endif
128 };
129
130 /* Structures and definitions for synchronous message posting.
131  * See adpt_i2o_post_wait() for description
132  * */
133 struct adpt_i2o_post_wait_data
134 {
135         int status;
136         u32 id;
137         adpt_wait_queue_head_t *wq;
138         struct adpt_i2o_post_wait_data *next;
139 };
140
141 static struct adpt_i2o_post_wait_data *adpt_post_wait_queue = NULL;
142 static u32 adpt_post_wait_id = 0;
143 static DEFINE_SPINLOCK(adpt_post_wait_lock);
144
145
146 /*============================================================================
147  *                              Functions
148  *============================================================================
149  */
150
151 static inline int dpt_dma64(adpt_hba *pHba)
152 {
153         return (sizeof(dma_addr_t) > 4 && (pHba)->dma64);
154 }
155
156 static inline u32 dma_high(dma_addr_t addr)
157 {
158         return upper_32_bits(addr);
159 }
160
161 static inline u32 dma_low(dma_addr_t addr)
162 {
163         return (u32)addr;
164 }
165
166 static u8 adpt_read_blink_led(adpt_hba* host)
167 {
168         if (host->FwDebugBLEDflag_P) {
169                 if( readb(host->FwDebugBLEDflag_P) == 0xbc ){
170                         return readb(host->FwDebugBLEDvalue_P);
171                 }
172         }
173         return 0;
174 }
175
176 /*============================================================================
177  * Scsi host template interface functions
178  *============================================================================
179  */
180
181 static struct pci_device_id dptids[] = {
182         { PCI_DPT_VENDOR_ID, PCI_DPT_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,},
183         { PCI_DPT_VENDOR_ID, PCI_DPT_RAPTOR_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,},
184         { 0, }
185 };
186 MODULE_DEVICE_TABLE(pci,dptids);
187
188 static int adpt_detect(struct scsi_host_template* sht)
189 {
190         struct pci_dev *pDev = NULL;
191         adpt_hba* pHba;
192
193         PINFO("Detecting Adaptec I2O RAID controllers...\n");
194
195         /* search for all Adatpec I2O RAID cards */
196         while ((pDev = pci_get_device( PCI_DPT_VENDOR_ID, PCI_ANY_ID, pDev))) {
197                 if(pDev->device == PCI_DPT_DEVICE_ID ||
198                    pDev->device == PCI_DPT_RAPTOR_DEVICE_ID){
199                         if(adpt_install_hba(sht, pDev) ){
200                                 PERROR("Could not Init an I2O RAID device\n");
201                                 PERROR("Will not try to detect others.\n");
202                                 return hba_count-1;
203                         }
204                         pci_dev_get(pDev);
205                 }
206         }
207
208         /* In INIT state, Activate IOPs */
209         for (pHba = hba_chain; pHba; pHba = pHba->next) {
210                 // Activate does get status , init outbound, and get hrt
211                 if (adpt_i2o_activate_hba(pHba) < 0) {
212                         adpt_i2o_delete_hba(pHba);
213                 }
214         }
215
216
217         /* Active IOPs in HOLD state */
218
219 rebuild_sys_tab:
220         if (hba_chain == NULL) 
221                 return 0;
222
223         /*
224          * If build_sys_table fails, we kill everything and bail
225          * as we can't init the IOPs w/o a system table
226          */     
227         if (adpt_i2o_build_sys_table() < 0) {
228                 adpt_i2o_sys_shutdown();
229                 return 0;
230         }
231
232         PDEBUG("HBA's in HOLD state\n");
233
234         /* If IOP don't get online, we need to rebuild the System table */
235         for (pHba = hba_chain; pHba; pHba = pHba->next) {
236                 if (adpt_i2o_online_hba(pHba) < 0) {
237                         adpt_i2o_delete_hba(pHba);      
238                         goto rebuild_sys_tab;
239                 }
240         }
241
242         /* Active IOPs now in OPERATIONAL state */
243         PDEBUG("HBA's in OPERATIONAL state\n");
244
245         printk("dpti: If you have a lot of devices this could take a few minutes.\n");
246         for (pHba = hba_chain; pHba; pHba = pHba->next) {
247                 printk(KERN_INFO"%s: Reading the hardware resource table.\n", pHba->name);
248                 if (adpt_i2o_lct_get(pHba) < 0){
249                         adpt_i2o_delete_hba(pHba);
250                         continue;
251                 }
252
253                 if (adpt_i2o_parse_lct(pHba) < 0){
254                         adpt_i2o_delete_hba(pHba);
255                         continue;
256                 }
257                 adpt_inquiry(pHba);
258         }
259
260         adpt_sysfs_class = class_create(THIS_MODULE, "dpt_i2o");
261         if (IS_ERR(adpt_sysfs_class)) {
262                 printk(KERN_WARNING"dpti: unable to create dpt_i2o class\n");
263                 adpt_sysfs_class = NULL;
264         }
265
266         for (pHba = hba_chain; pHba; pHba = pHba->next) {
267                 if (adpt_scsi_host_alloc(pHba, sht) < 0){
268                         adpt_i2o_delete_hba(pHba);
269                         continue;
270                 }
271                 pHba->initialized = TRUE;
272                 pHba->state &= ~DPTI_STATE_RESET;
273                 if (adpt_sysfs_class) {
274                         struct device *dev = device_create(adpt_sysfs_class,
275                                 NULL, MKDEV(DPTI_I2O_MAJOR, pHba->unit), NULL,
276                                 "dpti%d", pHba->unit);
277                         if (IS_ERR(dev)) {
278                                 printk(KERN_WARNING"dpti%d: unable to "
279                                         "create device in dpt_i2o class\n",
280                                         pHba->unit);
281                         }
282                 }
283         }
284
285         // Register our control device node
286         // nodes will need to be created in /dev to access this
287         // the nodes can not be created from within the driver
288         if (hba_count && register_chrdev(DPTI_I2O_MAJOR, DPT_DRIVER, &adpt_fops)) {
289                 adpt_i2o_sys_shutdown();
290                 return 0;
291         }
292         return hba_count;
293 }
294
295
296 /*
297  * scsi_unregister will be called AFTER we return.
298  */
299 static int adpt_release(struct Scsi_Host *host)
300 {
301         adpt_hba* pHba = (adpt_hba*) host->hostdata[0];
302 //      adpt_i2o_quiesce_hba(pHba);
303         adpt_i2o_delete_hba(pHba);
304         scsi_unregister(host);
305         return 0;
306 }
307
308
309 static void adpt_inquiry(adpt_hba* pHba)
310 {
311         u32 msg[17]; 
312         u32 *mptr;
313         u32 *lenptr;
314         int direction;
315         int scsidir;
316         u32 len;
317         u32 reqlen;
318         u8* buf;
319         dma_addr_t addr;
320         u8  scb[16];
321         s32 rcode;
322
323         memset(msg, 0, sizeof(msg));
324         buf = dma_alloc_coherent(&pHba->pDev->dev, 80, &addr, GFP_KERNEL);
325         if(!buf){
326                 printk(KERN_ERR"%s: Could not allocate buffer\n",pHba->name);
327                 return;
328         }
329         memset((void*)buf, 0, 36);
330         
331         len = 36;
332         direction = 0x00000000; 
333         scsidir  =0x40000000;   // DATA IN  (iop<--dev)
334
335         if (dpt_dma64(pHba))
336                 reqlen = 17;            // SINGLE SGE, 64 bit
337         else
338                 reqlen = 14;            // SINGLE SGE, 32 bit
339         /* Stick the headers on */
340         msg[0] = reqlen<<16 | SGL_OFFSET_12;
341         msg[1] = (0xff<<24|HOST_TID<<12|ADAPTER_TID);
342         msg[2] = 0;
343         msg[3]  = 0;
344         // Adaptec/DPT Private stuff 
345         msg[4] = I2O_CMD_SCSI_EXEC|DPT_ORGANIZATION_ID<<16;
346         msg[5] = ADAPTER_TID | 1<<16 /* Interpret*/;
347         /* Direction, disconnect ok | sense data | simple queue , CDBLen */
348         // I2O_SCB_FLAG_ENABLE_DISCONNECT | 
349         // I2O_SCB_FLAG_SIMPLE_QUEUE_TAG | 
350         // I2O_SCB_FLAG_SENSE_DATA_IN_MESSAGE;
351         msg[6] = scsidir|0x20a00000| 6 /* cmd len*/;
352
353         mptr=msg+7;
354
355         memset(scb, 0, sizeof(scb));
356         // Write SCSI command into the message - always 16 byte block 
357         scb[0] = INQUIRY;
358         scb[1] = 0;
359         scb[2] = 0;
360         scb[3] = 0;
361         scb[4] = 36;
362         scb[5] = 0;
363         // Don't care about the rest of scb
364
365         memcpy(mptr, scb, sizeof(scb));
366         mptr+=4;
367         lenptr=mptr++;          /* Remember me - fill in when we know */
368
369         /* Now fill in the SGList and command */
370         *lenptr = len;
371         if (dpt_dma64(pHba)) {
372                 *mptr++ = (0x7C<<24)+(2<<16)+0x02; /* Enable 64 bit */
373                 *mptr++ = 1 << PAGE_SHIFT;
374                 *mptr++ = 0xD0000000|direction|len;
375                 *mptr++ = dma_low(addr);
376                 *mptr++ = dma_high(addr);
377         } else {
378                 *mptr++ = 0xD0000000|direction|len;
379                 *mptr++ = addr;
380         }
381
382         // Send it on it's way
383         rcode = adpt_i2o_post_wait(pHba, msg, reqlen<<2, 120);
384         if (rcode != 0) {
385                 sprintf(pHba->detail, "Adaptec I2O RAID");
386                 printk(KERN_INFO "%s: Inquiry Error (%d)\n",pHba->name,rcode);
387                 if (rcode != -ETIME && rcode != -EINTR)
388                         dma_free_coherent(&pHba->pDev->dev, 80, buf, addr);
389         } else {
390                 memset(pHba->detail, 0, sizeof(pHba->detail));
391                 memcpy(&(pHba->detail), "Vendor: Adaptec ", 16);
392                 memcpy(&(pHba->detail[16]), " Model: ", 8);
393                 memcpy(&(pHba->detail[24]), (u8*) &buf[16], 16);
394                 memcpy(&(pHba->detail[40]), " FW: ", 4);
395                 memcpy(&(pHba->detail[44]), (u8*) &buf[32], 4);
396                 pHba->detail[48] = '\0';        /* precautionary */
397                 dma_free_coherent(&pHba->pDev->dev, 80, buf, addr);
398         }
399         adpt_i2o_status_get(pHba);
400         return ;
401 }
402
403
404 static int adpt_slave_configure(struct scsi_device * device)
405 {
406         struct Scsi_Host *host = device->host;
407         adpt_hba* pHba;
408
409         pHba = (adpt_hba *) host->hostdata[0];
410
411         if (host->can_queue && device->tagged_supported) {
412                 scsi_adjust_queue_depth(device, MSG_SIMPLE_TAG,
413                                 host->can_queue - 1);
414         } else {
415                 scsi_adjust_queue_depth(device, 0, 1);
416         }
417         return 0;
418 }
419
420 static int adpt_queue(struct scsi_cmnd * cmd, void (*done) (struct scsi_cmnd *))
421 {
422         adpt_hba* pHba = NULL;
423         struct adpt_device* pDev = NULL;        /* dpt per device information */
424
425         cmd->scsi_done = done;
426         /*
427          * SCSI REQUEST_SENSE commands will be executed automatically by the 
428          * Host Adapter for any errors, so they should not be executed 
429          * explicitly unless the Sense Data is zero indicating that no error 
430          * occurred.
431          */
432
433         if ((cmd->cmnd[0] == REQUEST_SENSE) && (cmd->sense_buffer[0] != 0)) {
434                 cmd->result = (DID_OK << 16);
435                 cmd->scsi_done(cmd);
436                 return 0;
437         }
438
439         pHba = (adpt_hba*)cmd->device->host->hostdata[0];
440         if (!pHba) {
441                 return FAILED;
442         }
443
444         rmb();
445         /*
446          * TODO: I need to block here if I am processing ioctl cmds
447          * but if the outstanding cmds all finish before the ioctl,
448          * the scsi-core will not know to start sending cmds to me again.
449          * I need to a way to restart the scsi-cores queues or should I block
450          * calling scsi_done on the outstanding cmds instead
451          * for now we don't set the IOCTL state
452          */
453         if(((pHba->state) & DPTI_STATE_IOCTL) || ((pHba->state) & DPTI_STATE_RESET)) {
454                 pHba->host->last_reset = jiffies;
455                 pHba->host->resetting = 1;
456                 return 1;
457         }
458
459         // TODO if the cmd->device if offline then I may need to issue a bus rescan
460         // followed by a get_lct to see if the device is there anymore
461         if((pDev = (struct adpt_device*) (cmd->device->hostdata)) == NULL) {
462                 /*
463                  * First command request for this device.  Set up a pointer
464                  * to the device structure.  This should be a TEST_UNIT_READY
465                  * command from scan_scsis_single.
466                  */
467                 if ((pDev = adpt_find_device(pHba, (u32)cmd->device->channel, (u32)cmd->device->id, (u32)cmd->device->lun)) == NULL) {
468                         // TODO: if any luns are at this bus, scsi id then fake a TEST_UNIT_READY and INQUIRY response 
469                         // with type 7F (for all luns less than the max for this bus,id) so the lun scan will continue.
470                         cmd->result = (DID_NO_CONNECT << 16);
471                         cmd->scsi_done(cmd);
472                         return 0;
473                 }
474                 cmd->device->hostdata = pDev;
475         }
476         pDev->pScsi_dev = cmd->device;
477
478         /*
479          * If we are being called from when the device is being reset, 
480          * delay processing of the command until later.
481          */
482         if (pDev->state & DPTI_DEV_RESET ) {
483                 return FAILED;
484         }
485         return adpt_scsi_to_i2o(pHba, cmd, pDev);
486 }
487
488 static int adpt_bios_param(struct scsi_device *sdev, struct block_device *dev,
489                 sector_t capacity, int geom[])
490 {
491         int heads=-1;
492         int sectors=-1;
493         int cylinders=-1;
494
495         // *** First lets set the default geometry ****
496         
497         // If the capacity is less than ox2000
498         if (capacity < 0x2000 ) {       // floppy
499                 heads = 18;
500                 sectors = 2;
501         } 
502         // else if between 0x2000 and 0x20000
503         else if (capacity < 0x20000) {
504                 heads = 64;
505                 sectors = 32;
506         }
507         // else if between 0x20000 and 0x40000
508         else if (capacity < 0x40000) {
509                 heads = 65;
510                 sectors = 63;
511         }
512         // else if between 0x4000 and 0x80000
513         else if (capacity < 0x80000) {
514                 heads = 128;
515                 sectors = 63;
516         }
517         // else if greater than 0x80000
518         else {
519                 heads = 255;
520                 sectors = 63;
521         }
522         cylinders = sector_div(capacity, heads * sectors);
523
524         // Special case if CDROM
525         if(sdev->type == 5) {  // CDROM
526                 heads = 252;
527                 sectors = 63;
528                 cylinders = 1111;
529         }
530
531         geom[0] = heads;
532         geom[1] = sectors;
533         geom[2] = cylinders;
534         
535         PDEBUG("adpt_bios_param: exit\n");
536         return 0;
537 }
538
539
540 static const char *adpt_info(struct Scsi_Host *host)
541 {
542         adpt_hba* pHba;
543
544         pHba = (adpt_hba *) host->hostdata[0];
545         return (char *) (pHba->detail);
546 }
547
548 static int adpt_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset,
549                   int length, int inout)
550 {
551         struct adpt_device* d;
552         int id;
553         int chan;
554         int len = 0;
555         int begin = 0;
556         int pos = 0;
557         adpt_hba* pHba;
558         int unit;
559
560         *start = buffer;
561         if (inout == TRUE) {
562                 /*
563                  * The user has done a write and wants us to take the
564                  * data in the buffer and do something with it.
565                  * proc_scsiwrite calls us with inout = 1
566                  *
567                  * Read data from buffer (writing to us) - NOT SUPPORTED
568                  */
569                 return -EINVAL;
570         }
571
572         /*
573          * inout = 0 means the user has done a read and wants information
574          * returned, so we write information about the cards into the buffer
575          * proc_scsiread() calls us with inout = 0
576          */
577
578         // Find HBA (host bus adapter) we are looking for
579         mutex_lock(&adpt_configuration_lock);
580         for (pHba = hba_chain; pHba; pHba = pHba->next) {
581                 if (pHba->host == host) {
582                         break;  /* found adapter */
583                 }
584         }
585         mutex_unlock(&adpt_configuration_lock);
586         if (pHba == NULL) {
587                 return 0;
588         }
589         host = pHba->host;
590
591         len  = sprintf(buffer    , "Adaptec I2O RAID Driver Version: %s\n\n", DPT_I2O_VERSION);
592         len += sprintf(buffer+len, "%s\n", pHba->detail);
593         len += sprintf(buffer+len, "SCSI Host=scsi%d  Control Node=/dev/%s  irq=%d\n", 
594                         pHba->host->host_no, pHba->name, host->irq);
595         len += sprintf(buffer+len, "\tpost fifo size  = %d\n\treply fifo size = %d\n\tsg table size   = %d\n\n",
596                         host->can_queue, (int) pHba->reply_fifo_size , host->sg_tablesize);
597
598         pos = begin + len;
599
600         /* CHECKPOINT */
601         if(pos > offset + length) {
602                 goto stop_output;
603         }
604         if(pos <= offset) {
605                 /*
606                  * If we haven't even written to where we last left
607                  * off (the last time we were called), reset the 
608                  * beginning pointer.
609                  */
610                 len = 0;
611                 begin = pos;
612         }
613         len +=  sprintf(buffer+len, "Devices:\n");
614         for(chan = 0; chan < MAX_CHANNEL; chan++) {
615                 for(id = 0; id < MAX_ID; id++) {
616                         d = pHba->channel[chan].device[id];
617                         while(d){
618                                 len += sprintf(buffer+len,"\t%-24.24s", d->pScsi_dev->vendor);
619                                 len += sprintf(buffer+len," Rev: %-8.8s\n", d->pScsi_dev->rev);
620                                 pos = begin + len;
621
622
623                                 /* CHECKPOINT */
624                                 if(pos > offset + length) {
625                                         goto stop_output;
626                                 }
627                                 if(pos <= offset) {
628                                         len = 0;
629                                         begin = pos;
630                                 }
631
632                                 unit = d->pI2o_dev->lct_data.tid;
633                                 len += sprintf(buffer+len, "\tTID=%d, (Channel=%d, Target=%d, Lun=%d)  (%s)\n\n",
634                                                unit, (int)d->scsi_channel, (int)d->scsi_id, (int)d->scsi_lun,
635                                                scsi_device_online(d->pScsi_dev)? "online":"offline"); 
636                                 pos = begin + len;
637
638                                 /* CHECKPOINT */
639                                 if(pos > offset + length) {
640                                         goto stop_output;
641                                 }
642                                 if(pos <= offset) {
643                                         len = 0;
644                                         begin = pos;
645                                 }
646
647                                 d = d->next_lun;
648                         }
649                 }
650         }
651
652         /*
653          * begin is where we last checked our position with regards to offset
654          * begin is always less than offset.  len is relative to begin.  It
655          * is the number of bytes written past begin
656          *
657          */
658 stop_output:
659         /* stop the output and calculate the correct length */
660         *(buffer + len) = '\0';
661
662         *start = buffer + (offset - begin);     /* Start of wanted data */
663         len -= (offset - begin);
664         if(len > length) {
665                 len = length;
666         } else if(len < 0){
667                 len = 0;
668                 **start = '\0';
669         }
670         return len;
671 }
672
673 /*
674  *      Turn a struct scsi_cmnd * into a unique 32 bit 'context'.
675  */
676 static u32 adpt_cmd_to_context(struct scsi_cmnd *cmd)
677 {
678         return (u32)cmd->serial_number;
679 }
680
681 /*
682  *      Go from a u32 'context' to a struct scsi_cmnd * .
683  *      This could probably be made more efficient.
684  */
685 static struct scsi_cmnd *
686         adpt_cmd_from_context(adpt_hba * pHba, u32 context)
687 {
688         struct scsi_cmnd * cmd;
689         struct scsi_device * d;
690
691         if (context == 0)
692                 return NULL;
693
694         spin_unlock(pHba->host->host_lock);
695         shost_for_each_device(d, pHba->host) {
696                 unsigned long flags;
697                 spin_lock_irqsave(&d->list_lock, flags);
698                 list_for_each_entry(cmd, &d->cmd_list, list) {
699                         if (((u32)cmd->serial_number == context)) {
700                                 spin_unlock_irqrestore(&d->list_lock, flags);
701                                 scsi_device_put(d);
702                                 spin_lock(pHba->host->host_lock);
703                                 return cmd;
704                         }
705                 }
706                 spin_unlock_irqrestore(&d->list_lock, flags);
707         }
708         spin_lock(pHba->host->host_lock);
709
710         return NULL;
711 }
712
713 /*
714  *      Turn a pointer to ioctl reply data into an u32 'context'
715  */
716 static u32 adpt_ioctl_to_context(adpt_hba * pHba, void *reply)
717 {
718 #if BITS_PER_LONG == 32
719         return (u32)(unsigned long)reply;
720 #else
721         ulong flags = 0;
722         u32 nr, i;
723
724         spin_lock_irqsave(pHba->host->host_lock, flags);
725         nr = ARRAY_SIZE(pHba->ioctl_reply_context);
726         for (i = 0; i < nr; i++) {
727                 if (pHba->ioctl_reply_context[i] == NULL) {
728                         pHba->ioctl_reply_context[i] = reply;
729                         break;
730                 }
731         }
732         spin_unlock_irqrestore(pHba->host->host_lock, flags);
733         if (i >= nr) {
734                 kfree (reply);
735                 printk(KERN_WARNING"%s: Too many outstanding "
736                                 "ioctl commands\n", pHba->name);
737                 return (u32)-1;
738         }
739
740         return i;
741 #endif
742 }
743
744 /*
745  *      Go from an u32 'context' to a pointer to ioctl reply data.
746  */
747 static void *adpt_ioctl_from_context(adpt_hba *pHba, u32 context)
748 {
749 #if BITS_PER_LONG == 32
750         return (void *)(unsigned long)context;
751 #else
752         void *p = pHba->ioctl_reply_context[context];
753         pHba->ioctl_reply_context[context] = NULL;
754
755         return p;
756 #endif
757 }
758
759 /*===========================================================================
760  * Error Handling routines
761  *===========================================================================
762  */
763
764 static int adpt_abort(struct scsi_cmnd * cmd)
765 {
766         adpt_hba* pHba = NULL;  /* host bus adapter structure */
767         struct adpt_device* dptdevice;  /* dpt per device information */
768         u32 msg[5];
769         int rcode;
770
771         if(cmd->serial_number == 0){
772                 return FAILED;
773         }
774         pHba = (adpt_hba*) cmd->device->host->hostdata[0];
775         printk(KERN_INFO"%s: Trying to Abort cmd=%ld\n",pHba->name, cmd->serial_number);
776         if ((dptdevice = (void*) (cmd->device->hostdata)) == NULL) {
777                 printk(KERN_ERR "%s: Unable to abort: No device in cmnd\n",pHba->name);
778                 return FAILED;
779         }
780
781         memset(msg, 0, sizeof(msg));
782         msg[0] = FIVE_WORD_MSG_SIZE|SGL_OFFSET_0;
783         msg[1] = I2O_CMD_SCSI_ABORT<<24|HOST_TID<<12|dptdevice->tid;
784         msg[2] = 0;
785         msg[3]= 0; 
786         msg[4] = adpt_cmd_to_context(cmd);
787         if (pHba->host)
788                 spin_lock_irq(pHba->host->host_lock);
789         rcode = adpt_i2o_post_wait(pHba, msg, sizeof(msg), FOREVER);
790         if (pHba->host)
791                 spin_unlock_irq(pHba->host->host_lock);
792         if (rcode != 0) {
793                 if(rcode == -EOPNOTSUPP ){
794                         printk(KERN_INFO"%s: Abort cmd not supported\n",pHba->name);
795                         return FAILED;
796                 }
797                 printk(KERN_INFO"%s: Abort cmd=%ld failed.\n",pHba->name, cmd->serial_number);
798                 return FAILED;
799         } 
800         printk(KERN_INFO"%s: Abort cmd=%ld complete.\n",pHba->name, cmd->serial_number);
801         return SUCCESS;
802 }
803
804
805 #define I2O_DEVICE_RESET 0x27
806 // This is the same for BLK and SCSI devices
807 // NOTE this is wrong in the i2o.h definitions
808 // This is not currently supported by our adapter but we issue it anyway
809 static int adpt_device_reset(struct scsi_cmnd* cmd)
810 {
811         adpt_hba* pHba;
812         u32 msg[4];
813         u32 rcode;
814         int old_state;
815         struct adpt_device* d = cmd->device->hostdata;
816
817         pHba = (void*) cmd->device->host->hostdata[0];
818         printk(KERN_INFO"%s: Trying to reset device\n",pHba->name);
819         if (!d) {
820                 printk(KERN_INFO"%s: Reset Device: Device Not found\n",pHba->name);
821                 return FAILED;
822         }
823         memset(msg, 0, sizeof(msg));
824         msg[0] = FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
825         msg[1] = (I2O_DEVICE_RESET<<24|HOST_TID<<12|d->tid);
826         msg[2] = 0;
827         msg[3] = 0;
828
829         if (pHba->host)
830                 spin_lock_irq(pHba->host->host_lock);
831         old_state = d->state;
832         d->state |= DPTI_DEV_RESET;
833         rcode = adpt_i2o_post_wait(pHba, msg,sizeof(msg), FOREVER);
834         d->state = old_state;
835         if (pHba->host)
836                 spin_unlock_irq(pHba->host->host_lock);
837         if (rcode != 0) {
838                 if(rcode == -EOPNOTSUPP ){
839                         printk(KERN_INFO"%s: Device reset not supported\n",pHba->name);
840                         return FAILED;
841                 }
842                 printk(KERN_INFO"%s: Device reset failed\n",pHba->name);
843                 return FAILED;
844         } else {
845                 printk(KERN_INFO"%s: Device reset successful\n",pHba->name);
846                 return SUCCESS;
847         }
848 }
849
850
851 #define I2O_HBA_BUS_RESET 0x87
852 // This version of bus reset is called by the eh_error handler
853 static int adpt_bus_reset(struct scsi_cmnd* cmd)
854 {
855         adpt_hba* pHba;
856         u32 msg[4];
857         u32 rcode;
858
859         pHba = (adpt_hba*)cmd->device->host->hostdata[0];
860         memset(msg, 0, sizeof(msg));
861         printk(KERN_WARNING"%s: Bus reset: SCSI Bus %d: tid: %d\n",pHba->name, cmd->device->channel,pHba->channel[cmd->device->channel].tid );
862         msg[0] = FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
863         msg[1] = (I2O_HBA_BUS_RESET<<24|HOST_TID<<12|pHba->channel[cmd->device->channel].tid);
864         msg[2] = 0;
865         msg[3] = 0;
866         if (pHba->host)
867                 spin_lock_irq(pHba->host->host_lock);
868         rcode = adpt_i2o_post_wait(pHba, msg,sizeof(msg), FOREVER);
869         if (pHba->host)
870                 spin_unlock_irq(pHba->host->host_lock);
871         if (rcode != 0) {
872                 printk(KERN_WARNING"%s: Bus reset failed.\n",pHba->name);
873                 return FAILED;
874         } else {
875                 printk(KERN_WARNING"%s: Bus reset success.\n",pHba->name);
876                 return SUCCESS;
877         }
878 }
879
880 // This version of reset is called by the eh_error_handler
881 static int __adpt_reset(struct scsi_cmnd* cmd)
882 {
883         adpt_hba* pHba;
884         int rcode;
885         pHba = (adpt_hba*)cmd->device->host->hostdata[0];
886         printk(KERN_WARNING"%s: Hba Reset: scsi id %d: tid: %d\n",pHba->name,cmd->device->channel,pHba->channel[cmd->device->channel].tid );
887         rcode =  adpt_hba_reset(pHba);
888         if(rcode == 0){
889                 printk(KERN_WARNING"%s: HBA reset complete\n",pHba->name);
890                 return SUCCESS;
891         } else {
892                 printk(KERN_WARNING"%s: HBA reset failed (%x)\n",pHba->name, rcode);
893                 return FAILED;
894         }
895 }
896
897 static int adpt_reset(struct scsi_cmnd* cmd)
898 {
899         int rc;
900
901         spin_lock_irq(cmd->device->host->host_lock);
902         rc = __adpt_reset(cmd);
903         spin_unlock_irq(cmd->device->host->host_lock);
904
905         return rc;
906 }
907
908 // This version of reset is called by the ioctls and indirectly from eh_error_handler via adpt_reset
909 static int adpt_hba_reset(adpt_hba* pHba)
910 {
911         int rcode;
912
913         pHba->state |= DPTI_STATE_RESET;
914
915         // Activate does get status , init outbound, and get hrt
916         if ((rcode=adpt_i2o_activate_hba(pHba)) < 0) {
917                 printk(KERN_ERR "%s: Could not activate\n", pHba->name);
918                 adpt_i2o_delete_hba(pHba);
919                 return rcode;
920         }
921
922         if ((rcode=adpt_i2o_build_sys_table()) < 0) {
923                 adpt_i2o_delete_hba(pHba);
924                 return rcode;
925         }
926         PDEBUG("%s: in HOLD state\n",pHba->name);
927
928         if ((rcode=adpt_i2o_online_hba(pHba)) < 0) {
929                 adpt_i2o_delete_hba(pHba);      
930                 return rcode;
931         }
932         PDEBUG("%s: in OPERATIONAL state\n",pHba->name);
933
934         if ((rcode=adpt_i2o_lct_get(pHba)) < 0){
935                 adpt_i2o_delete_hba(pHba);
936                 return rcode;
937         }
938
939         if ((rcode=adpt_i2o_reparse_lct(pHba)) < 0){
940                 adpt_i2o_delete_hba(pHba);
941                 return rcode;
942         }
943         pHba->state &= ~DPTI_STATE_RESET;
944
945         adpt_fail_posted_scbs(pHba);
946         return 0;       /* return success */
947 }
948
949 /*===========================================================================
950  * 
951  *===========================================================================
952  */
953
954
955 static void adpt_i2o_sys_shutdown(void)
956 {
957         adpt_hba *pHba, *pNext;
958         struct adpt_i2o_post_wait_data *p1, *old;
959
960          printk(KERN_INFO"Shutting down Adaptec I2O controllers.\n");
961          printk(KERN_INFO"   This could take a few minutes if there are many devices attached\n");
962         /* Delete all IOPs from the controller chain */
963         /* They should have already been released by the
964          * scsi-core
965          */
966         for (pHba = hba_chain; pHba; pHba = pNext) {
967                 pNext = pHba->next;
968                 adpt_i2o_delete_hba(pHba);
969         }
970
971         /* Remove any timedout entries from the wait queue.  */
972 //      spin_lock_irqsave(&adpt_post_wait_lock, flags);
973         /* Nothing should be outstanding at this point so just
974          * free them 
975          */
976         for(p1 = adpt_post_wait_queue; p1;) {
977                 old = p1;
978                 p1 = p1->next;
979                 kfree(old);
980         }
981 //      spin_unlock_irqrestore(&adpt_post_wait_lock, flags);
982         adpt_post_wait_queue = NULL;
983
984          printk(KERN_INFO "Adaptec I2O controllers down.\n");
985 }
986
987 static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev)
988 {
989
990         adpt_hba* pHba = NULL;
991         adpt_hba* p = NULL;
992         ulong base_addr0_phys = 0;
993         ulong base_addr1_phys = 0;
994         u32 hba_map0_area_size = 0;
995         u32 hba_map1_area_size = 0;
996         void __iomem *base_addr_virt = NULL;
997         void __iomem *msg_addr_virt = NULL;
998         int dma64 = 0;
999
1000         int raptorFlag = FALSE;
1001
1002         if(pci_enable_device(pDev)) {
1003                 return -EINVAL;
1004         }
1005
1006         if (pci_request_regions(pDev, "dpt_i2o")) {
1007                 PERROR("dpti: adpt_config_hba: pci request region failed\n");
1008                 return -EINVAL;
1009         }
1010
1011         pci_set_master(pDev);
1012
1013         /*
1014          *      See if we should enable dma64 mode.
1015          */
1016         if (sizeof(dma_addr_t) > 4 &&
1017             pci_set_dma_mask(pDev, DMA_64BIT_MASK) == 0) {
1018                 if (dma_get_required_mask(&pDev->dev) > DMA_32BIT_MASK)
1019                         dma64 = 1;
1020         }
1021         if (!dma64 && pci_set_dma_mask(pDev, DMA_32BIT_MASK) != 0)
1022                 return -EINVAL;
1023
1024         /* adapter only supports message blocks below 4GB */
1025         pci_set_consistent_dma_mask(pDev, DMA_32BIT_MASK);
1026
1027         base_addr0_phys = pci_resource_start(pDev,0);
1028         hba_map0_area_size = pci_resource_len(pDev,0);
1029
1030         // Check if standard PCI card or single BAR Raptor
1031         if(pDev->device == PCI_DPT_DEVICE_ID){
1032                 if(pDev->subsystem_device >=0xc032 && pDev->subsystem_device <= 0xc03b){
1033                         // Raptor card with this device id needs 4M
1034                         hba_map0_area_size = 0x400000;
1035                 } else { // Not Raptor - it is a PCI card
1036                         if(hba_map0_area_size > 0x100000 ){ 
1037                                 hba_map0_area_size = 0x100000;
1038                         }
1039                 }
1040         } else {// Raptor split BAR config
1041                 // Use BAR1 in this configuration
1042                 base_addr1_phys = pci_resource_start(pDev,1);
1043                 hba_map1_area_size = pci_resource_len(pDev,1);
1044                 raptorFlag = TRUE;
1045         }
1046
1047 #if BITS_PER_LONG == 64
1048         /*
1049          *      The original Adaptec 64 bit driver has this comment here:
1050          *      "x86_64 machines need more optimal mappings"
1051          *
1052          *      I assume some HBAs report ridiculously large mappings
1053          *      and we need to limit them on platforms with IOMMUs.
1054          */
1055         if (raptorFlag == TRUE) {
1056                 if (hba_map0_area_size > 128)
1057                         hba_map0_area_size = 128;
1058                 if (hba_map1_area_size > 524288)
1059                         hba_map1_area_size = 524288;
1060         } else {
1061                 if (hba_map0_area_size > 524288)
1062                         hba_map0_area_size = 524288;
1063         }
1064 #endif
1065
1066         base_addr_virt = ioremap(base_addr0_phys,hba_map0_area_size);
1067         if (!base_addr_virt) {
1068                 pci_release_regions(pDev);
1069                 PERROR("dpti: adpt_config_hba: io remap failed\n");
1070                 return -EINVAL;
1071         }
1072
1073         if(raptorFlag == TRUE) {
1074                 msg_addr_virt = ioremap(base_addr1_phys, hba_map1_area_size );
1075                 if (!msg_addr_virt) {
1076                         PERROR("dpti: adpt_config_hba: io remap failed on BAR1\n");
1077                         iounmap(base_addr_virt);
1078                         pci_release_regions(pDev);
1079                         return -EINVAL;
1080                 }
1081         } else {
1082                 msg_addr_virt = base_addr_virt;
1083         }
1084         
1085         // Allocate and zero the data structure
1086         pHba = kzalloc(sizeof(adpt_hba), GFP_KERNEL);
1087         if (!pHba) {
1088                 if (msg_addr_virt != base_addr_virt)
1089                         iounmap(msg_addr_virt);
1090                 iounmap(base_addr_virt);
1091                 pci_release_regions(pDev);
1092                 return -ENOMEM;
1093         }
1094
1095         mutex_lock(&adpt_configuration_lock);
1096
1097         if(hba_chain != NULL){
1098                 for(p = hba_chain; p->next; p = p->next);
1099                 p->next = pHba;
1100         } else {
1101                 hba_chain = pHba;
1102         }
1103         pHba->next = NULL;
1104         pHba->unit = hba_count;
1105         sprintf(pHba->name, "dpti%d", hba_count);
1106         hba_count++;
1107         
1108         mutex_unlock(&adpt_configuration_lock);
1109
1110         pHba->pDev = pDev;
1111         pHba->base_addr_phys = base_addr0_phys;
1112
1113         // Set up the Virtual Base Address of the I2O Device
1114         pHba->base_addr_virt = base_addr_virt;
1115         pHba->msg_addr_virt = msg_addr_virt;
1116         pHba->irq_mask = base_addr_virt+0x30;
1117         pHba->post_port = base_addr_virt+0x40;
1118         pHba->reply_port = base_addr_virt+0x44;
1119
1120         pHba->hrt = NULL;
1121         pHba->lct = NULL;
1122         pHba->lct_size = 0;
1123         pHba->status_block = NULL;
1124         pHba->post_count = 0;
1125         pHba->state = DPTI_STATE_RESET;
1126         pHba->pDev = pDev;
1127         pHba->devices = NULL;
1128         pHba->dma64 = dma64;
1129
1130         // Initializing the spinlocks
1131         spin_lock_init(&pHba->state_lock);
1132         spin_lock_init(&adpt_post_wait_lock);
1133
1134         if(raptorFlag == 0){
1135                 printk(KERN_INFO "Adaptec I2O RAID controller"
1136                                  " %d at %p size=%x irq=%d%s\n", 
1137                         hba_count-1, base_addr_virt,
1138                         hba_map0_area_size, pDev->irq,
1139                         dma64 ? " (64-bit DMA)" : "");
1140         } else {
1141                 printk(KERN_INFO"Adaptec I2O RAID controller %d irq=%d%s\n",
1142                         hba_count-1, pDev->irq,
1143                         dma64 ? " (64-bit DMA)" : "");
1144                 printk(KERN_INFO"     BAR0 %p - size= %x\n",base_addr_virt,hba_map0_area_size);
1145                 printk(KERN_INFO"     BAR1 %p - size= %x\n",msg_addr_virt,hba_map1_area_size);
1146         }
1147
1148         if (request_irq (pDev->irq, adpt_isr, IRQF_SHARED, pHba->name, pHba)) {
1149                 printk(KERN_ERR"%s: Couldn't register IRQ %d\n", pHba->name, pDev->irq);
1150                 adpt_i2o_delete_hba(pHba);
1151                 return -EINVAL;
1152         }
1153
1154         return 0;
1155 }
1156
1157
1158 static void adpt_i2o_delete_hba(adpt_hba* pHba)
1159 {
1160         adpt_hba* p1;
1161         adpt_hba* p2;
1162         struct i2o_device* d;
1163         struct i2o_device* next;
1164         int i;
1165         int j;
1166         struct adpt_device* pDev;
1167         struct adpt_device* pNext;
1168
1169
1170         mutex_lock(&adpt_configuration_lock);
1171         // scsi_unregister calls our adpt_release which
1172         // does a quiese
1173         if(pHba->host){
1174                 free_irq(pHba->host->irq, pHba);
1175         }
1176         p2 = NULL;
1177         for( p1 = hba_chain; p1; p2 = p1,p1=p1->next){
1178                 if(p1 == pHba) {
1179                         if(p2) {
1180                                 p2->next = p1->next;
1181                         } else {
1182                                 hba_chain = p1->next;
1183                         }
1184                         break;
1185                 }
1186         }
1187
1188         hba_count--;
1189         mutex_unlock(&adpt_configuration_lock);
1190
1191         iounmap(pHba->base_addr_virt);
1192         pci_release_regions(pHba->pDev);
1193         if(pHba->msg_addr_virt != pHba->base_addr_virt){
1194                 iounmap(pHba->msg_addr_virt);
1195         }
1196         if(pHba->FwDebugBuffer_P)
1197                 iounmap(pHba->FwDebugBuffer_P);
1198         if(pHba->hrt) {
1199                 dma_free_coherent(&pHba->pDev->dev,
1200                         pHba->hrt->num_entries * pHba->hrt->entry_len << 2,
1201                         pHba->hrt, pHba->hrt_pa);
1202         }
1203         if(pHba->lct) {
1204                 dma_free_coherent(&pHba->pDev->dev, pHba->lct_size,
1205                         pHba->lct, pHba->lct_pa);
1206         }
1207         if(pHba->status_block) {
1208                 dma_free_coherent(&pHba->pDev->dev, sizeof(i2o_status_block),
1209                         pHba->status_block, pHba->status_block_pa);
1210         }
1211         if(pHba->reply_pool) {
1212                 dma_free_coherent(&pHba->pDev->dev,
1213                         pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
1214                         pHba->reply_pool, pHba->reply_pool_pa);
1215         }
1216
1217         for(d = pHba->devices; d ; d = next){
1218                 next = d->next;
1219                 kfree(d);
1220         }
1221         for(i = 0 ; i < pHba->top_scsi_channel ; i++){
1222                 for(j = 0; j < MAX_ID; j++){
1223                         if(pHba->channel[i].device[j] != NULL){
1224                                 for(pDev = pHba->channel[i].device[j]; pDev; pDev = pNext){
1225                                         pNext = pDev->next_lun;
1226                                         kfree(pDev);
1227                                 }
1228                         }
1229                 }
1230         }
1231         pci_dev_put(pHba->pDev);
1232         kfree(pHba);
1233
1234         if (adpt_sysfs_class)
1235                 device_destroy(adpt_sysfs_class,
1236                                 MKDEV(DPTI_I2O_MAJOR, pHba->unit));
1237
1238         if(hba_count <= 0){
1239                 unregister_chrdev(DPTI_I2O_MAJOR, DPT_DRIVER);   
1240                 if (adpt_sysfs_class) {
1241                         class_destroy(adpt_sysfs_class);
1242                         adpt_sysfs_class = NULL;
1243                 }
1244         }
1245 }
1246
1247 static struct adpt_device* adpt_find_device(adpt_hba* pHba, u32 chan, u32 id, u32 lun)
1248 {
1249         struct adpt_device* d;
1250
1251         if(chan < 0 || chan >= MAX_CHANNEL)
1252                 return NULL;
1253         
1254         if( pHba->channel[chan].device == NULL){
1255                 printk(KERN_DEBUG"Adaptec I2O RAID: Trying to find device before they are allocated\n");
1256                 return NULL;
1257         }
1258
1259         d = pHba->channel[chan].device[id];
1260         if(!d || d->tid == 0) {
1261                 return NULL;
1262         }
1263
1264         /* If it is the only lun at that address then this should match*/
1265         if(d->scsi_lun == lun){
1266                 return d;
1267         }
1268
1269         /* else we need to look through all the luns */
1270         for(d=d->next_lun ; d ; d = d->next_lun){
1271                 if(d->scsi_lun == lun){
1272                         return d;
1273                 }
1274         }
1275         return NULL;
1276 }
1277
1278
1279 static int adpt_i2o_post_wait(adpt_hba* pHba, u32* msg, int len, int timeout)
1280 {
1281         // I used my own version of the WAIT_QUEUE_HEAD
1282         // to handle some version differences
1283         // When embedded in the kernel this could go back to the vanilla one
1284         ADPT_DECLARE_WAIT_QUEUE_HEAD(adpt_wq_i2o_post);
1285         int status = 0;
1286         ulong flags = 0;
1287         struct adpt_i2o_post_wait_data *p1, *p2;
1288         struct adpt_i2o_post_wait_data *wait_data =
1289                 kmalloc(sizeof(struct adpt_i2o_post_wait_data),GFP_KERNEL);
1290         DECLARE_WAITQUEUE(wait, current);
1291
1292         if (!wait_data)
1293                 return -ENOMEM;
1294
1295         /*
1296          * The spin locking is needed to keep anyone from playing
1297          * with the queue pointers and id while we do the same
1298          */
1299         spin_lock_irqsave(&adpt_post_wait_lock, flags);
1300        // TODO we need a MORE unique way of getting ids
1301        // to support async LCT get
1302         wait_data->next = adpt_post_wait_queue;
1303         adpt_post_wait_queue = wait_data;
1304         adpt_post_wait_id++;
1305         adpt_post_wait_id &= 0x7fff;
1306         wait_data->id =  adpt_post_wait_id;
1307         spin_unlock_irqrestore(&adpt_post_wait_lock, flags);
1308
1309         wait_data->wq = &adpt_wq_i2o_post;
1310         wait_data->status = -ETIMEDOUT;
1311
1312         add_wait_queue(&adpt_wq_i2o_post, &wait);
1313
1314         msg[2] |= 0x80000000 | ((u32)wait_data->id);
1315         timeout *= HZ;
1316         if((status = adpt_i2o_post_this(pHba, msg, len)) == 0){
1317                 set_current_state(TASK_INTERRUPTIBLE);
1318                 if(pHba->host)
1319                         spin_unlock_irq(pHba->host->host_lock);
1320                 if (!timeout)
1321                         schedule();
1322                 else{
1323                         timeout = schedule_timeout(timeout);
1324                         if (timeout == 0) {
1325                                 // I/O issued, but cannot get result in
1326                                 // specified time. Freeing resorces is
1327                                 // dangerous.
1328                                 status = -ETIME;
1329                         }
1330                 }
1331                 if(pHba->host)
1332                         spin_lock_irq(pHba->host->host_lock);
1333         }
1334         remove_wait_queue(&adpt_wq_i2o_post, &wait);
1335
1336         if(status == -ETIMEDOUT){
1337                 printk(KERN_INFO"dpti%d: POST WAIT TIMEOUT\n",pHba->unit);
1338                 // We will have to free the wait_data memory during shutdown
1339                 return status;
1340         }
1341
1342         /* Remove the entry from the queue.  */
1343         p2 = NULL;
1344         spin_lock_irqsave(&adpt_post_wait_lock, flags);
1345         for(p1 = adpt_post_wait_queue; p1; p2 = p1, p1 = p1->next) {
1346                 if(p1 == wait_data) {
1347                         if(p1->status == I2O_DETAIL_STATUS_UNSUPPORTED_FUNCTION ) {
1348                                 status = -EOPNOTSUPP;
1349                         }
1350                         if(p2) {
1351                                 p2->next = p1->next;
1352                         } else {
1353                                 adpt_post_wait_queue = p1->next;
1354                         }
1355                         break;
1356                 }
1357         }
1358         spin_unlock_irqrestore(&adpt_post_wait_lock, flags);
1359
1360         kfree(wait_data);
1361
1362         return status;
1363 }
1364
1365
1366 static s32 adpt_i2o_post_this(adpt_hba* pHba, u32* data, int len)
1367 {
1368
1369         u32 m = EMPTY_QUEUE;
1370         u32 __iomem *msg;
1371         ulong timeout = jiffies + 30*HZ;
1372         do {
1373                 rmb();
1374                 m = readl(pHba->post_port);
1375                 if (m != EMPTY_QUEUE) {
1376                         break;
1377                 }
1378                 if(time_after(jiffies,timeout)){
1379                         printk(KERN_WARNING"dpti%d: Timeout waiting for message frame!\n", pHba->unit);
1380                         return -ETIMEDOUT;
1381                 }
1382                 schedule_timeout_uninterruptible(1);
1383         } while(m == EMPTY_QUEUE);
1384                 
1385         msg = pHba->msg_addr_virt + m;
1386         memcpy_toio(msg, data, len);
1387         wmb();
1388
1389         //post message
1390         writel(m, pHba->post_port);
1391         wmb();
1392
1393         return 0;
1394 }
1395
1396
1397 static void adpt_i2o_post_wait_complete(u32 context, int status)
1398 {
1399         struct adpt_i2o_post_wait_data *p1 = NULL;
1400         /*
1401          * We need to search through the adpt_post_wait
1402          * queue to see if the given message is still
1403          * outstanding.  If not, it means that the IOP
1404          * took longer to respond to the message than we
1405          * had allowed and timer has already expired.
1406          * Not much we can do about that except log
1407          * it for debug purposes, increase timeout, and recompile
1408          *
1409          * Lock needed to keep anyone from moving queue pointers
1410          * around while we're looking through them.
1411          */
1412
1413         context &= 0x7fff;
1414
1415         spin_lock(&adpt_post_wait_lock);
1416         for(p1 = adpt_post_wait_queue; p1; p1 = p1->next) {
1417                 if(p1->id == context) {
1418                         p1->status = status;
1419                         spin_unlock(&adpt_post_wait_lock);
1420                         wake_up_interruptible(p1->wq);
1421                         return;
1422                 }
1423         }
1424         spin_unlock(&adpt_post_wait_lock);
1425         // If this happens we lose commands that probably really completed
1426         printk(KERN_DEBUG"dpti: Could Not find task %d in wait queue\n",context);
1427         printk(KERN_DEBUG"      Tasks in wait queue:\n");
1428         for(p1 = adpt_post_wait_queue; p1; p1 = p1->next) {
1429                 printk(KERN_DEBUG"           %d\n",p1->id);
1430         }
1431         return;
1432 }
1433
1434 static s32 adpt_i2o_reset_hba(adpt_hba* pHba)                   
1435 {
1436         u32 msg[8];
1437         u8* status;
1438         dma_addr_t addr;
1439         u32 m = EMPTY_QUEUE ;
1440         ulong timeout = jiffies + (TMOUT_IOPRESET*HZ);
1441
1442         if(pHba->initialized  == FALSE) {       // First time reset should be quick
1443                 timeout = jiffies + (25*HZ);
1444         } else {
1445                 adpt_i2o_quiesce_hba(pHba);
1446         }
1447
1448         do {
1449                 rmb();
1450                 m = readl(pHba->post_port);
1451                 if (m != EMPTY_QUEUE) {
1452                         break;
1453                 }
1454                 if(time_after(jiffies,timeout)){
1455                         printk(KERN_WARNING"Timeout waiting for message!\n");
1456                         return -ETIMEDOUT;
1457                 }
1458                 schedule_timeout_uninterruptible(1);
1459         } while (m == EMPTY_QUEUE);
1460
1461         status = dma_alloc_coherent(&pHba->pDev->dev, 4, &addr, GFP_KERNEL);
1462         if(status == NULL) {
1463                 adpt_send_nop(pHba, m);
1464                 printk(KERN_ERR"IOP reset failed - no free memory.\n");
1465                 return -ENOMEM;
1466         }
1467         memset(status,0,4);
1468
1469         msg[0]=EIGHT_WORD_MSG_SIZE|SGL_OFFSET_0;
1470         msg[1]=I2O_CMD_ADAPTER_RESET<<24|HOST_TID<<12|ADAPTER_TID;
1471         msg[2]=0;
1472         msg[3]=0;
1473         msg[4]=0;
1474         msg[5]=0;
1475         msg[6]=dma_low(addr);
1476         msg[7]=dma_high(addr);
1477
1478         memcpy_toio(pHba->msg_addr_virt+m, msg, sizeof(msg));
1479         wmb();
1480         writel(m, pHba->post_port);
1481         wmb();
1482
1483         while(*status == 0){
1484                 if(time_after(jiffies,timeout)){
1485                         printk(KERN_WARNING"%s: IOP Reset Timeout\n",pHba->name);
1486                         /* We lose 4 bytes of "status" here, but we cannot
1487                            free these because controller may awake and corrupt
1488                            those bytes at any time */
1489                         /* dma_free_coherent(&pHba->pDev->dev, 4, buf, addr); */
1490                         return -ETIMEDOUT;
1491                 }
1492                 rmb();
1493                 schedule_timeout_uninterruptible(1);
1494         }
1495
1496         if(*status == 0x01 /*I2O_EXEC_IOP_RESET_IN_PROGRESS*/) {
1497                 PDEBUG("%s: Reset in progress...\n", pHba->name);
1498                 // Here we wait for message frame to become available
1499                 // indicated that reset has finished
1500                 do {
1501                         rmb();
1502                         m = readl(pHba->post_port);
1503                         if (m != EMPTY_QUEUE) {
1504                                 break;
1505                         }
1506                         if(time_after(jiffies,timeout)){
1507                                 printk(KERN_ERR "%s:Timeout waiting for IOP Reset.\n",pHba->name);
1508                                 /* We lose 4 bytes of "status" here, but we
1509                                    cannot free these because controller may
1510                                    awake and corrupt those bytes at any time */
1511                                 /* dma_free_coherent(&pHba->pDev->dev, 4, buf, addr); */
1512                                 return -ETIMEDOUT;
1513                         }
1514                         schedule_timeout_uninterruptible(1);
1515                 } while (m == EMPTY_QUEUE);
1516                 // Flush the offset
1517                 adpt_send_nop(pHba, m);
1518         }
1519         adpt_i2o_status_get(pHba);
1520         if(*status == 0x02 ||
1521                         pHba->status_block->iop_state != ADAPTER_STATE_RESET) {
1522                 printk(KERN_WARNING"%s: Reset reject, trying to clear\n",
1523                                 pHba->name);
1524         } else {
1525                 PDEBUG("%s: Reset completed.\n", pHba->name);
1526         }
1527
1528         dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
1529 #ifdef UARTDELAY
1530         // This delay is to allow someone attached to the card through the debug UART to 
1531         // set up the dump levels that they want before the rest of the initialization sequence
1532         adpt_delay(20000);
1533 #endif
1534         return 0;
1535 }
1536
1537
1538 static int adpt_i2o_parse_lct(adpt_hba* pHba)
1539 {
1540         int i;
1541         int max;
1542         int tid;
1543         struct i2o_device *d;
1544         i2o_lct *lct = pHba->lct;
1545         u8 bus_no = 0;
1546         s16 scsi_id;
1547         s16 scsi_lun;
1548         u32 buf[10]; // larger than 7, or 8 ...
1549         struct adpt_device* pDev; 
1550         
1551         if (lct == NULL) {
1552                 printk(KERN_ERR "%s: LCT is empty???\n",pHba->name);
1553                 return -1;
1554         }
1555         
1556         max = lct->table_size;  
1557         max -= 3;
1558         max /= 9;
1559
1560         for(i=0;i<max;i++) {
1561                 if( lct->lct_entry[i].user_tid != 0xfff){
1562                         /*
1563                          * If we have hidden devices, we need to inform the upper layers about
1564                          * the possible maximum id reference to handle device access when
1565                          * an array is disassembled. This code has no other purpose but to
1566                          * allow us future access to devices that are currently hidden
1567                          * behind arrays, hotspares or have not been configured (JBOD mode).
1568                          */
1569                         if( lct->lct_entry[i].class_id != I2O_CLASS_RANDOM_BLOCK_STORAGE &&
1570                             lct->lct_entry[i].class_id != I2O_CLASS_SCSI_PERIPHERAL &&
1571                             lct->lct_entry[i].class_id != I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL ){
1572                                 continue;
1573                         }
1574                         tid = lct->lct_entry[i].tid;
1575                         // I2O_DPT_DEVICE_INFO_GROUP_NO;
1576                         if(adpt_i2o_query_scalar(pHba, tid, 0x8000, -1, buf, 32)<0) {
1577                                 continue;
1578                         }
1579                         bus_no = buf[0]>>16;
1580                         scsi_id = buf[1];
1581                         scsi_lun = (buf[2]>>8 )&0xff;
1582                         if(bus_no >= MAX_CHANNEL) {     // Something wrong skip it
1583                                 printk(KERN_WARNING"%s: Channel number %d out of range \n", pHba->name, bus_no);
1584                                 continue;
1585                         }
1586                         if (scsi_id >= MAX_ID){
1587                                 printk(KERN_WARNING"%s: SCSI ID %d out of range \n", pHba->name, bus_no);
1588                                 continue;
1589                         }
1590                         if(bus_no > pHba->top_scsi_channel){
1591                                 pHba->top_scsi_channel = bus_no;
1592                         }
1593                         if(scsi_id > pHba->top_scsi_id){
1594                                 pHba->top_scsi_id = scsi_id;
1595                         }
1596                         if(scsi_lun > pHba->top_scsi_lun){
1597                                 pHba->top_scsi_lun = scsi_lun;
1598                         }
1599                         continue;
1600                 }
1601                 d = kmalloc(sizeof(struct i2o_device), GFP_KERNEL);
1602                 if(d==NULL)
1603                 {
1604                         printk(KERN_CRIT"%s: Out of memory for I2O device data.\n",pHba->name);
1605                         return -ENOMEM;
1606                 }
1607                 
1608                 d->controller = pHba;
1609                 d->next = NULL;
1610
1611                 memcpy(&d->lct_data, &lct->lct_entry[i], sizeof(i2o_lct_entry));
1612
1613                 d->flags = 0;
1614                 tid = d->lct_data.tid;
1615                 adpt_i2o_report_hba_unit(pHba, d);
1616                 adpt_i2o_install_device(pHba, d);
1617         }
1618         bus_no = 0;
1619         for(d = pHba->devices; d ; d = d->next) {
1620                 if(d->lct_data.class_id  == I2O_CLASS_BUS_ADAPTER_PORT ||
1621                    d->lct_data.class_id  == I2O_CLASS_FIBRE_CHANNEL_PORT){
1622                         tid = d->lct_data.tid;
1623                         // TODO get the bus_no from hrt-but for now they are in order
1624                         //bus_no = 
1625                         if(bus_no > pHba->top_scsi_channel){
1626                                 pHba->top_scsi_channel = bus_no;
1627                         }
1628                         pHba->channel[bus_no].type = d->lct_data.class_id;
1629                         pHba->channel[bus_no].tid = tid;
1630                         if(adpt_i2o_query_scalar(pHba, tid, 0x0200, -1, buf, 28)>=0)
1631                         {
1632                                 pHba->channel[bus_no].scsi_id = buf[1];
1633                                 PDEBUG("Bus %d - SCSI ID %d.\n", bus_no, buf[1]);
1634                         }
1635                         // TODO remove - this is just until we get from hrt
1636                         bus_no++;
1637                         if(bus_no >= MAX_CHANNEL) {     // Something wrong skip it
1638                                 printk(KERN_WARNING"%s: Channel number %d out of range - LCT\n", pHba->name, bus_no);
1639                                 break;
1640                         }
1641                 }
1642         }
1643
1644         // Setup adpt_device table
1645         for(d = pHba->devices; d ; d = d->next) {
1646                 if(d->lct_data.class_id  == I2O_CLASS_RANDOM_BLOCK_STORAGE ||
1647                    d->lct_data.class_id  == I2O_CLASS_SCSI_PERIPHERAL ||
1648                    d->lct_data.class_id  == I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL ){
1649
1650                         tid = d->lct_data.tid;
1651                         scsi_id = -1;
1652                         // I2O_DPT_DEVICE_INFO_GROUP_NO;
1653                         if(adpt_i2o_query_scalar(pHba, tid, 0x8000, -1, buf, 32)>=0) {
1654                                 bus_no = buf[0]>>16;
1655                                 scsi_id = buf[1];
1656                                 scsi_lun = (buf[2]>>8 )&0xff;
1657                                 if(bus_no >= MAX_CHANNEL) {     // Something wrong skip it
1658                                         continue;
1659                                 }
1660                                 if (scsi_id >= MAX_ID) {
1661                                         continue;
1662                                 }
1663                                 if( pHba->channel[bus_no].device[scsi_id] == NULL){
1664                                         pDev =  kzalloc(sizeof(struct adpt_device),GFP_KERNEL);
1665                                         if(pDev == NULL) {
1666                                                 return -ENOMEM;
1667                                         }
1668                                         pHba->channel[bus_no].device[scsi_id] = pDev;
1669                                 } else {
1670                                         for( pDev = pHba->channel[bus_no].device[scsi_id];      
1671                                                         pDev->next_lun; pDev = pDev->next_lun){
1672                                         }
1673                                         pDev->next_lun = kzalloc(sizeof(struct adpt_device),GFP_KERNEL);
1674                                         if(pDev->next_lun == NULL) {
1675                                                 return -ENOMEM;
1676                                         }
1677                                         pDev = pDev->next_lun;
1678                                 }
1679                                 pDev->tid = tid;
1680                                 pDev->scsi_channel = bus_no;
1681                                 pDev->scsi_id = scsi_id;
1682                                 pDev->scsi_lun = scsi_lun;
1683                                 pDev->pI2o_dev = d;
1684                                 d->owner = pDev;
1685                                 pDev->type = (buf[0])&0xff;
1686                                 pDev->flags = (buf[0]>>8)&0xff;
1687                                 if(scsi_id > pHba->top_scsi_id){
1688                                         pHba->top_scsi_id = scsi_id;
1689                                 }
1690                                 if(scsi_lun > pHba->top_scsi_lun){
1691                                         pHba->top_scsi_lun = scsi_lun;
1692                                 }
1693                         }
1694                         if(scsi_id == -1){
1695                                 printk(KERN_WARNING"Could not find SCSI ID for %s\n",
1696                                                 d->lct_data.identity_tag);
1697                         }
1698                 }
1699         }
1700         return 0;
1701 }
1702
1703
1704 /*
1705  *      Each I2O controller has a chain of devices on it - these match
1706  *      the useful parts of the LCT of the board.
1707  */
1708  
1709 static int adpt_i2o_install_device(adpt_hba* pHba, struct i2o_device *d)
1710 {
1711         mutex_lock(&adpt_configuration_lock);
1712         d->controller=pHba;
1713         d->owner=NULL;
1714         d->next=pHba->devices;
1715         d->prev=NULL;
1716         if (pHba->devices != NULL){
1717                 pHba->devices->prev=d;
1718         }
1719         pHba->devices=d;
1720         *d->dev_name = 0;
1721
1722         mutex_unlock(&adpt_configuration_lock);
1723         return 0;
1724 }
1725
1726 static int adpt_open(struct inode *inode, struct file *file)
1727 {
1728         int minor;
1729         adpt_hba* pHba;
1730
1731         lock_kernel();
1732         //TODO check for root access
1733         //
1734         minor = iminor(inode);
1735         if (minor >= hba_count) {
1736                 unlock_kernel();
1737                 return -ENXIO;
1738         }
1739         mutex_lock(&adpt_configuration_lock);
1740         for (pHba = hba_chain; pHba; pHba = pHba->next) {
1741                 if (pHba->unit == minor) {
1742                         break;  /* found adapter */
1743                 }
1744         }
1745         if (pHba == NULL) {
1746                 mutex_unlock(&adpt_configuration_lock);
1747                 unlock_kernel();
1748                 return -ENXIO;
1749         }
1750
1751 //      if(pHba->in_use){
1752         //      mutex_unlock(&adpt_configuration_lock);
1753 //              return -EBUSY;
1754 //      }
1755
1756         pHba->in_use = 1;
1757         mutex_unlock(&adpt_configuration_lock);
1758         unlock_kernel();
1759
1760         return 0;
1761 }
1762
1763 static int adpt_close(struct inode *inode, struct file *file)
1764 {
1765         int minor;
1766         adpt_hba* pHba;
1767
1768         minor = iminor(inode);
1769         if (minor >= hba_count) {
1770                 return -ENXIO;
1771         }
1772         mutex_lock(&adpt_configuration_lock);
1773         for (pHba = hba_chain; pHba; pHba = pHba->next) {
1774                 if (pHba->unit == minor) {
1775                         break;  /* found adapter */
1776                 }
1777         }
1778         mutex_unlock(&adpt_configuration_lock);
1779         if (pHba == NULL) {
1780                 return -ENXIO;
1781         }
1782
1783         pHba->in_use = 0;
1784
1785         return 0;
1786 }
1787
1788
1789 static int adpt_i2o_passthru(adpt_hba* pHba, u32 __user *arg)
1790 {
1791         u32 msg[MAX_MESSAGE_SIZE];
1792         u32* reply = NULL;
1793         u32 size = 0;
1794         u32 reply_size = 0;
1795         u32 __user *user_msg = arg;
1796         u32 __user * user_reply = NULL;
1797         void *sg_list[pHba->sg_tablesize];
1798         u32 sg_offset = 0;
1799         u32 sg_count = 0;
1800         int sg_index = 0;
1801         u32 i = 0;
1802         u32 rcode = 0;
1803         void *p = NULL;
1804         dma_addr_t addr;
1805         ulong flags = 0;
1806
1807         memset(&msg, 0, MAX_MESSAGE_SIZE*4);
1808         // get user msg size in u32s 
1809         if(get_user(size, &user_msg[0])){
1810                 return -EFAULT;
1811         }
1812         size = size>>16;
1813
1814         user_reply = &user_msg[size];
1815         if(size > MAX_MESSAGE_SIZE){
1816                 return -EFAULT;
1817         }
1818         size *= 4; // Convert to bytes
1819
1820         /* Copy in the user's I2O command */
1821         if(copy_from_user(msg, user_msg, size)) {
1822                 return -EFAULT;
1823         }
1824         get_user(reply_size, &user_reply[0]);
1825         reply_size = reply_size>>16;
1826         if(reply_size > REPLY_FRAME_SIZE){
1827                 reply_size = REPLY_FRAME_SIZE;
1828         }
1829         reply_size *= 4;
1830         reply = kzalloc(REPLY_FRAME_SIZE*4, GFP_KERNEL);
1831         if(reply == NULL) {
1832                 printk(KERN_WARNING"%s: Could not allocate reply buffer\n",pHba->name);
1833                 return -ENOMEM;
1834         }
1835         sg_offset = (msg[0]>>4)&0xf;
1836         msg[2] = 0x40000000; // IOCTL context
1837         msg[3] = adpt_ioctl_to_context(pHba, reply);
1838         if (msg[3] == (u32)-1)
1839                 return -EBUSY;
1840
1841         memset(sg_list,0, sizeof(sg_list[0])*pHba->sg_tablesize);
1842         if(sg_offset) {
1843                 // TODO add 64 bit API
1844                 struct sg_simple_element *sg =  (struct sg_simple_element*) (msg+sg_offset);
1845                 sg_count = (size - sg_offset*4) / sizeof(struct sg_simple_element);
1846                 if (sg_count > pHba->sg_tablesize){
1847                         printk(KERN_DEBUG"%s:IOCTL SG List too large (%u)\n", pHba->name,sg_count);
1848                         kfree (reply);
1849                         return -EINVAL;
1850                 }
1851
1852                 for(i = 0; i < sg_count; i++) {
1853                         int sg_size;
1854
1855                         if (!(sg[i].flag_count & 0x10000000 /*I2O_SGL_FLAGS_SIMPLE_ADDRESS_ELEMENT*/)) {
1856                                 printk(KERN_DEBUG"%s:Bad SG element %d - not simple (%x)\n",pHba->name,i,  sg[i].flag_count);
1857                                 rcode = -EINVAL;
1858                                 goto cleanup;
1859                         }
1860                         sg_size = sg[i].flag_count & 0xffffff;      
1861                         /* Allocate memory for the transfer */
1862                         p = dma_alloc_coherent(&pHba->pDev->dev, sg_size, &addr, GFP_KERNEL);
1863                         if(!p) {
1864                                 printk(KERN_DEBUG"%s: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
1865                                                 pHba->name,sg_size,i,sg_count);
1866                                 rcode = -ENOMEM;
1867                                 goto cleanup;
1868                         }
1869                         sg_list[sg_index++] = p; // sglist indexed with input frame, not our internal frame.
1870                         /* Copy in the user's SG buffer if necessary */
1871                         if(sg[i].flag_count & 0x04000000 /*I2O_SGL_FLAGS_DIR*/) {
1872                                 // sg_simple_element API is 32 bit
1873                                 if (copy_from_user(p,(void __user *)(ulong)sg[i].addr_bus, sg_size)) {
1874                                         printk(KERN_DEBUG"%s: Could not copy SG buf %d FROM user\n",pHba->name,i);
1875                                         rcode = -EFAULT;
1876                                         goto cleanup;
1877                                 }
1878                         }
1879                         /* sg_simple_element API is 32 bit, but addr < 4GB */
1880                         sg[i].addr_bus = addr;
1881                 }
1882         }
1883
1884         do {
1885                 if(pHba->host)
1886                         spin_lock_irqsave(pHba->host->host_lock, flags);
1887                 // This state stops any new commands from enterring the
1888                 // controller while processing the ioctl
1889 //              pHba->state |= DPTI_STATE_IOCTL;
1890 //              We can't set this now - The scsi subsystem sets host_blocked and
1891 //              the queue empties and stops.  We need a way to restart the queue
1892                 rcode = adpt_i2o_post_wait(pHba, msg, size, FOREVER);
1893                 if (rcode != 0)
1894                         printk("adpt_i2o_passthru: post wait failed %d %p\n",
1895                                         rcode, reply);
1896 //              pHba->state &= ~DPTI_STATE_IOCTL;
1897                 if(pHba->host)
1898                         spin_unlock_irqrestore(pHba->host->host_lock, flags);
1899         } while(rcode == -ETIMEDOUT);  
1900
1901         if(rcode){
1902                 goto cleanup;
1903         }
1904
1905         if(sg_offset) {
1906         /* Copy back the Scatter Gather buffers back to user space */
1907                 u32 j;
1908                 // TODO add 64 bit API
1909                 struct sg_simple_element* sg;
1910                 int sg_size;
1911
1912                 // re-acquire the original message to handle correctly the sg copy operation
1913                 memset(&msg, 0, MAX_MESSAGE_SIZE*4); 
1914                 // get user msg size in u32s 
1915                 if(get_user(size, &user_msg[0])){
1916                         rcode = -EFAULT; 
1917                         goto cleanup; 
1918                 }
1919                 size = size>>16;
1920                 size *= 4;
1921                 /* Copy in the user's I2O command */
1922                 if (copy_from_user (msg, user_msg, size)) {
1923                         rcode = -EFAULT;
1924                         goto cleanup;
1925                 }
1926                 sg_count = (size - sg_offset*4) / sizeof(struct sg_simple_element);
1927
1928                 // TODO add 64 bit API
1929                 sg       = (struct sg_simple_element*)(msg + sg_offset);
1930                 for (j = 0; j < sg_count; j++) {
1931                         /* Copy out the SG list to user's buffer if necessary */
1932                         if(! (sg[j].flag_count & 0x4000000 /*I2O_SGL_FLAGS_DIR*/)) {
1933                                 sg_size = sg[j].flag_count & 0xffffff; 
1934                                 // sg_simple_element API is 32 bit
1935                                 if (copy_to_user((void __user *)(ulong)sg[j].addr_bus,sg_list[j], sg_size)) {
1936                                         printk(KERN_WARNING"%s: Could not copy %p TO user %x\n",pHba->name, sg_list[j], sg[j].addr_bus);
1937                                         rcode = -EFAULT;
1938                                         goto cleanup;
1939                                 }
1940                         }
1941                 }
1942         } 
1943
1944         /* Copy back the reply to user space */
1945         if (reply_size) {
1946                 // we wrote our own values for context - now restore the user supplied ones
1947                 if(copy_from_user(reply+2, user_msg+2, sizeof(u32)*2)) {
1948                         printk(KERN_WARNING"%s: Could not copy message context FROM user\n",pHba->name);
1949                         rcode = -EFAULT;
1950                 }
1951                 if(copy_to_user(user_reply, reply, reply_size)) {
1952                         printk(KERN_WARNING"%s: Could not copy reply TO user\n",pHba->name);
1953                         rcode = -EFAULT;
1954                 }
1955         }
1956
1957
1958 cleanup:
1959         if (rcode != -ETIME && rcode != -EINTR) {
1960                 struct sg_simple_element *sg =
1961                                 (struct sg_simple_element*) (msg +sg_offset);
1962                 kfree (reply);
1963                 while(sg_index) {
1964                         if(sg_list[--sg_index]) {
1965                                 dma_free_coherent(&pHba->pDev->dev,
1966                                         sg[sg_index].flag_count & 0xffffff,
1967                                         sg_list[sg_index],
1968                                         sg[sg_index].addr_bus);
1969                         }
1970                 }
1971         }
1972         return rcode;
1973 }
1974
1975 #if defined __ia64__ 
1976 static void adpt_ia64_info(sysInfo_S* si)
1977 {
1978         // This is all the info we need for now
1979         // We will add more info as our new
1980         // managmenent utility requires it
1981         si->processorType = PROC_IA64;
1982 }
1983 #endif
1984
1985 #if defined __sparc__ 
1986 static void adpt_sparc_info(sysInfo_S* si)
1987 {
1988         // This is all the info we need for now
1989         // We will add more info as our new
1990         // managmenent utility requires it
1991         si->processorType = PROC_ULTRASPARC;
1992 }
1993 #endif
1994 #if defined __alpha__ 
1995 static void adpt_alpha_info(sysInfo_S* si)
1996 {
1997         // This is all the info we need for now
1998         // We will add more info as our new
1999         // managmenent utility requires it
2000         si->processorType = PROC_ALPHA;
2001 }
2002 #endif
2003
2004 #if defined __i386__
2005 static void adpt_i386_info(sysInfo_S* si)
2006 {
2007         // This is all the info we need for now
2008         // We will add more info as our new
2009         // managmenent utility requires it
2010         switch (boot_cpu_data.x86) {
2011         case CPU_386:
2012                 si->processorType = PROC_386;
2013                 break;
2014         case CPU_486:
2015                 si->processorType = PROC_486;
2016                 break;
2017         case CPU_586:
2018                 si->processorType = PROC_PENTIUM;
2019                 break;
2020         default:  // Just in case 
2021                 si->processorType = PROC_PENTIUM;
2022                 break;
2023         }
2024 }
2025 #endif
2026
2027 /*
2028  * This routine returns information about the system.  This does not effect
2029  * any logic and if the info is wrong - it doesn't matter.
2030  */
2031
2032 /* Get all the info we can not get from kernel services */
2033 static int adpt_system_info(void __user *buffer)
2034 {
2035         sysInfo_S si;
2036
2037         memset(&si, 0, sizeof(si));
2038
2039         si.osType = OS_LINUX;
2040         si.osMajorVersion = 0;
2041         si.osMinorVersion = 0;
2042         si.osRevision = 0;
2043         si.busType = SI_PCI_BUS;
2044         si.processorFamily = DPTI_sig.dsProcessorFamily;
2045
2046 #if defined __i386__
2047         adpt_i386_info(&si);
2048 #elif defined (__ia64__)
2049         adpt_ia64_info(&si);
2050 #elif defined(__sparc__)
2051         adpt_sparc_info(&si);
2052 #elif defined (__alpha__)
2053         adpt_alpha_info(&si);
2054 #else
2055         si.processorType = 0xff ;
2056 #endif
2057         if (copy_to_user(buffer, &si, sizeof(si))){
2058                 printk(KERN_WARNING"dpti: Could not copy buffer TO user\n");
2059                 return -EFAULT;
2060         }
2061
2062         return 0;
2063 }
2064
2065 static int adpt_ioctl(struct inode *inode, struct file *file, uint cmd,
2066               ulong arg)
2067 {
2068         int minor;
2069         int error = 0;
2070         adpt_hba* pHba;
2071         ulong flags = 0;
2072         void __user *argp = (void __user *)arg;
2073
2074         minor = iminor(inode);
2075         if (minor >= DPTI_MAX_HBA){
2076                 return -ENXIO;
2077         }
2078         mutex_lock(&adpt_configuration_lock);
2079         for (pHba = hba_chain; pHba; pHba = pHba->next) {
2080                 if (pHba->unit == minor) {
2081                         break;  /* found adapter */
2082                 }
2083         }
2084         mutex_unlock(&adpt_configuration_lock);
2085         if(pHba == NULL){
2086                 return -ENXIO;
2087         }
2088
2089         while((volatile u32) pHba->state & DPTI_STATE_RESET )
2090                 schedule_timeout_uninterruptible(2);
2091
2092         switch (cmd) {
2093         // TODO: handle 3 cases
2094         case DPT_SIGNATURE:
2095                 if (copy_to_user(argp, &DPTI_sig, sizeof(DPTI_sig))) {
2096                         return -EFAULT;
2097                 }
2098                 break;
2099         case I2OUSRCMD:
2100                 return adpt_i2o_passthru(pHba, argp);
2101
2102         case DPT_CTRLINFO:{
2103                 drvrHBAinfo_S HbaInfo;
2104
2105 #define FLG_OSD_PCI_VALID 0x0001
2106 #define FLG_OSD_DMA       0x0002
2107 #define FLG_OSD_I2O       0x0004
2108                 memset(&HbaInfo, 0, sizeof(HbaInfo));
2109                 HbaInfo.drvrHBAnum = pHba->unit;
2110                 HbaInfo.baseAddr = (ulong) pHba->base_addr_phys;
2111                 HbaInfo.blinkState = adpt_read_blink_led(pHba);
2112                 HbaInfo.pciBusNum =  pHba->pDev->bus->number;
2113                 HbaInfo.pciDeviceNum=PCI_SLOT(pHba->pDev->devfn); 
2114                 HbaInfo.Interrupt = pHba->pDev->irq; 
2115                 HbaInfo.hbaFlags = FLG_OSD_PCI_VALID | FLG_OSD_DMA | FLG_OSD_I2O;
2116                 if(copy_to_user(argp, &HbaInfo, sizeof(HbaInfo))){
2117                         printk(KERN_WARNING"%s: Could not copy HbaInfo TO user\n",pHba->name);
2118                         return -EFAULT;
2119                 }
2120                 break;
2121                 }
2122         case DPT_SYSINFO:
2123                 return adpt_system_info(argp);
2124         case DPT_BLINKLED:{
2125                 u32 value;
2126                 value = (u32)adpt_read_blink_led(pHba);
2127                 if (copy_to_user(argp, &value, sizeof(value))) {
2128                         return -EFAULT;
2129                 }
2130                 break;
2131                 }
2132         case I2ORESETCMD:
2133                 if(pHba->host)
2134                         spin_lock_irqsave(pHba->host->host_lock, flags);
2135                 adpt_hba_reset(pHba);
2136                 if(pHba->host)
2137                         spin_unlock_irqrestore(pHba->host->host_lock, flags);
2138                 break;
2139         case I2ORESCANCMD:
2140                 adpt_rescan(pHba);
2141                 break;
2142         default:
2143                 return -EINVAL;
2144         }
2145
2146         return error;
2147 }
2148
2149 #ifdef CONFIG_COMPAT
2150 static long compat_adpt_ioctl(struct file *file,
2151                                 unsigned int cmd, unsigned long arg)
2152 {
2153         struct inode *inode;
2154         long ret;
2155  
2156         inode = file->f_dentry->d_inode;
2157  
2158         lock_kernel();
2159  
2160         switch(cmd) {
2161                 case DPT_SIGNATURE:
2162                 case I2OUSRCMD:
2163                 case DPT_CTRLINFO:
2164                 case DPT_SYSINFO:
2165                 case DPT_BLINKLED:
2166                 case I2ORESETCMD:
2167                 case I2ORESCANCMD:
2168                 case (DPT_TARGET_BUSY & 0xFFFF):
2169                 case DPT_TARGET_BUSY:
2170                         ret = adpt_ioctl(inode, file, cmd, arg);
2171                         break;
2172                 default:
2173                         ret =  -ENOIOCTLCMD;
2174         }
2175  
2176         unlock_kernel();
2177  
2178         return ret;
2179 }
2180 #endif
2181
2182 static irqreturn_t adpt_isr(int irq, void *dev_id)
2183 {
2184         struct scsi_cmnd* cmd;
2185         adpt_hba* pHba = dev_id;
2186         u32 m;
2187         void __iomem *reply;
2188         u32 status=0;
2189         u32 context;
2190         ulong flags = 0;
2191         int handled = 0;
2192
2193         if (pHba == NULL){
2194                 printk(KERN_WARNING"adpt_isr: NULL dev_id\n");
2195                 return IRQ_NONE;
2196         }
2197         if(pHba->host)
2198                 spin_lock_irqsave(pHba->host->host_lock, flags);
2199
2200         while( readl(pHba->irq_mask) & I2O_INTERRUPT_PENDING_B) {
2201                 m = readl(pHba->reply_port);
2202                 if(m == EMPTY_QUEUE){
2203                         // Try twice then give up
2204                         rmb();
2205                         m = readl(pHba->reply_port);
2206                         if(m == EMPTY_QUEUE){ 
2207                                 // This really should not happen
2208                                 printk(KERN_ERR"dpti: Could not get reply frame\n");
2209                                 goto out;
2210                         }
2211                 }
2212                 if (pHba->reply_pool_pa <= m &&
2213                     m < pHba->reply_pool_pa +
2214                         (pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4)) {
2215                         reply = (u8 *)pHba->reply_pool +
2216                                                 (m - pHba->reply_pool_pa);
2217                 } else {
2218                         /* Ick, we should *never* be here */
2219                         printk(KERN_ERR "dpti: reply frame not from pool\n");
2220                         reply = (u8 *)bus_to_virt(m);
2221                 }
2222
2223                 if (readl(reply) & MSG_FAIL) {
2224                         u32 old_m = readl(reply+28); 
2225                         void __iomem *msg;
2226                         u32 old_context;
2227                         PDEBUG("%s: Failed message\n",pHba->name);
2228                         if(old_m >= 0x100000){
2229                                 printk(KERN_ERR"%s: Bad preserved MFA (%x)- dropping frame\n",pHba->name,old_m);
2230                                 writel(m,pHba->reply_port);
2231                                 continue;
2232                         }
2233                         // Transaction context is 0 in failed reply frame
2234                         msg = pHba->msg_addr_virt + old_m;
2235                         old_context = readl(msg+12);
2236                         writel(old_context, reply+12);
2237                         adpt_send_nop(pHba, old_m);
2238                 } 
2239                 context = readl(reply+8);
2240                 if(context & 0x40000000){ // IOCTL
2241                         void *p = adpt_ioctl_from_context(pHba, readl(reply+12));
2242                         if( p != NULL) {
2243                                 memcpy_fromio(p, reply, REPLY_FRAME_SIZE * 4);
2244                         }
2245                         // All IOCTLs will also be post wait
2246                 }
2247                 if(context & 0x80000000){ // Post wait message
2248                         status = readl(reply+16);
2249                         if(status  >> 24){
2250                                 status &=  0xffff; /* Get detail status */
2251                         } else {
2252                                 status = I2O_POST_WAIT_OK;
2253                         }
2254                         if(!(context & 0x40000000)) {
2255                                 cmd = adpt_cmd_from_context(pHba,
2256                                                         readl(reply+12));
2257                                 if(cmd != NULL) {
2258                                         printk(KERN_WARNING"%s: Apparent SCSI cmd in Post Wait Context - cmd=%p context=%x\n", pHba->name, cmd, context);
2259                                 }
2260                         }
2261                         adpt_i2o_post_wait_complete(context, status);
2262                 } else { // SCSI message
2263                         cmd = adpt_cmd_from_context (pHba, readl(reply+12));
2264                         if(cmd != NULL){
2265                                 scsi_dma_unmap(cmd);
2266                                 if(cmd->serial_number != 0) { // If not timedout
2267                                         adpt_i2o_to_scsi(reply, cmd);
2268                                 }
2269                         }
2270                 }
2271                 writel(m, pHba->reply_port);
2272                 wmb();
2273                 rmb();
2274         }
2275         handled = 1;
2276 out:    if(pHba->host)
2277                 spin_unlock_irqrestore(pHba->host->host_lock, flags);
2278         return IRQ_RETVAL(handled);
2279 }
2280
2281 static s32 adpt_scsi_to_i2o(adpt_hba* pHba, struct scsi_cmnd* cmd, struct adpt_device* d)
2282 {
2283         int i;
2284         u32 msg[MAX_MESSAGE_SIZE];
2285         u32* mptr;
2286         u32* lptr;
2287         u32 *lenptr;
2288         int direction;
2289         int scsidir;
2290         int nseg;
2291         u32 len;
2292         u32 reqlen;
2293         s32 rcode;
2294         dma_addr_t addr;
2295
2296         memset(msg, 0 , sizeof(msg));
2297         len = scsi_bufflen(cmd);
2298         direction = 0x00000000; 
2299         
2300         scsidir = 0x00000000;                   // DATA NO XFER
2301         if(len) {
2302                 /*
2303                  * Set SCBFlags to indicate if data is being transferred
2304                  * in or out, or no data transfer
2305                  * Note:  Do not have to verify index is less than 0 since
2306                  * cmd->cmnd[0] is an unsigned char
2307                  */
2308                 switch(cmd->sc_data_direction){
2309                 case DMA_FROM_DEVICE:
2310                         scsidir  =0x40000000;   // DATA IN  (iop<--dev)
2311                         break;
2312                 case DMA_TO_DEVICE:
2313                         direction=0x04000000;   // SGL OUT
2314                         scsidir  =0x80000000;   // DATA OUT (iop-->dev)
2315                         break;
2316                 case DMA_NONE:
2317                         break;
2318                 case DMA_BIDIRECTIONAL:
2319                         scsidir  =0x40000000;   // DATA IN  (iop<--dev)
2320                         // Assume In - and continue;
2321                         break;
2322                 default:
2323                         printk(KERN_WARNING"%s: scsi opcode 0x%x not supported.\n",
2324                              pHba->name, cmd->cmnd[0]);
2325                         cmd->result = (DID_OK <<16) | (INITIATOR_ERROR << 8);
2326                         cmd->scsi_done(cmd);
2327                         return  0;
2328                 }
2329         }
2330         // msg[0] is set later
2331         // I2O_CMD_SCSI_EXEC
2332         msg[1] = ((0xff<<24)|(HOST_TID<<12)|d->tid);
2333         msg[2] = 0;
2334         msg[3] = adpt_cmd_to_context(cmd);  /* Want SCSI control block back */
2335         // Our cards use the transaction context as the tag for queueing
2336         // Adaptec/DPT Private stuff 
2337         msg[4] = I2O_CMD_SCSI_EXEC|(DPT_ORGANIZATION_ID<<16);
2338         msg[5] = d->tid;
2339         /* Direction, disconnect ok | sense data | simple queue , CDBLen */
2340         // I2O_SCB_FLAG_ENABLE_DISCONNECT | 
2341         // I2O_SCB_FLAG_SIMPLE_QUEUE_TAG | 
2342         // I2O_SCB_FLAG_SENSE_DATA_IN_MESSAGE;
2343         msg[6] = scsidir|0x20a00000|cmd->cmd_len;
2344
2345         mptr=msg+7;
2346
2347         // Write SCSI command into the message - always 16 byte block 
2348         memset(mptr, 0,  16);
2349         memcpy(mptr, cmd->cmnd, cmd->cmd_len);
2350         mptr+=4;
2351         lenptr=mptr++;          /* Remember me - fill in when we know */
2352         if (dpt_dma64(pHba)) {
2353                 reqlen = 16;            // SINGLE SGE
2354                 *mptr++ = (0x7C<<24)+(2<<16)+0x02; /* Enable 64 bit */
2355                 *mptr++ = 1 << PAGE_SHIFT;
2356         } else {
2357                 reqlen = 14;            // SINGLE SGE
2358         }
2359         /* Now fill in the SGList and command */
2360
2361         nseg = scsi_dma_map(cmd);
2362         BUG_ON(nseg < 0);
2363         if (nseg) {
2364                 struct scatterlist *sg;
2365
2366                 len = 0;
2367                 scsi_for_each_sg(cmd, sg, nseg, i) {
2368                         lptr = mptr;
2369                         *mptr++ = direction|0x10000000|sg_dma_len(sg);
2370                         len+=sg_dma_len(sg);
2371                         addr = sg_dma_address(sg);
2372                         *mptr++ = dma_low(addr);
2373                         if (dpt_dma64(pHba))
2374                                 *mptr++ = dma_high(addr);
2375                         /* Make this an end of list */
2376                         if (i == nseg - 1)
2377                                 *lptr = direction|0xD0000000|sg_dma_len(sg);
2378                 }
2379                 reqlen = mptr - msg;
2380                 *lenptr = len;
2381                 
2382                 if(cmd->underflow && len != cmd->underflow){
2383                         printk(KERN_WARNING"Cmd len %08X Cmd underflow %08X\n",
2384                                 len, cmd->underflow);
2385                 }
2386         } else {
2387                 *lenptr = len = 0;
2388                 reqlen = 12;
2389         }
2390         
2391         /* Stick the headers on */
2392         msg[0] = reqlen<<16 | ((reqlen > 12) ? SGL_OFFSET_12 : SGL_OFFSET_0);
2393         
2394         // Send it on it's way
2395         rcode = adpt_i2o_post_this(pHba, msg, reqlen<<2);
2396         if (rcode == 0) {
2397                 return 0;
2398         }
2399         return rcode;
2400 }
2401
2402
2403 static s32 adpt_scsi_host_alloc(adpt_hba* pHba, struct scsi_host_template *sht)
2404 {
2405         struct Scsi_Host *host;
2406
2407         host = scsi_host_alloc(sht, sizeof(adpt_hba*));
2408         if (host == NULL) {
2409                 printk("%s: scsi_host_alloc returned NULL\n", pHba->name);
2410                 return -1;
2411         }
2412         host->hostdata[0] = (unsigned long)pHba;
2413         pHba->host = host;
2414
2415         host->irq = pHba->pDev->irq;
2416         /* no IO ports, so don't have to set host->io_port and
2417          * host->n_io_port
2418          */
2419         host->io_port = 0;
2420         host->n_io_port = 0;
2421                                 /* see comments in scsi_host.h */
2422         host->max_id = 16;
2423         host->max_lun = 256;
2424         host->max_channel = pHba->top_scsi_channel + 1;
2425         host->cmd_per_lun = 1;
2426         host->unique_id = (u32)sys_tbl_pa + pHba->unit;
2427         host->sg_tablesize = pHba->sg_tablesize;
2428         host->can_queue = pHba->post_fifo_size;
2429
2430         return 0;
2431 }
2432
2433
2434 static s32 adpt_i2o_to_scsi(void __iomem *reply, struct scsi_cmnd* cmd)
2435 {
2436         adpt_hba* pHba;
2437         u32 hba_status;
2438         u32 dev_status;
2439         u32 reply_flags = readl(reply) & 0xff00; // Leave it shifted up 8 bits 
2440         // I know this would look cleaner if I just read bytes
2441         // but the model I have been using for all the rest of the
2442         // io is in 4 byte words - so I keep that model
2443         u16 detailed_status = readl(reply+16) &0xffff;
2444         dev_status = (detailed_status & 0xff);
2445         hba_status = detailed_status >> 8;
2446
2447         // calculate resid for sg 
2448         scsi_set_resid(cmd, scsi_bufflen(cmd) - readl(reply+20));
2449
2450         pHba = (adpt_hba*) cmd->device->host->hostdata[0];
2451
2452         cmd->sense_buffer[0] = '\0';  // initialize sense valid flag to false
2453
2454         if(!(reply_flags & MSG_FAIL)) {
2455                 switch(detailed_status & I2O_SCSI_DSC_MASK) {
2456                 case I2O_SCSI_DSC_SUCCESS:
2457                         cmd->result = (DID_OK << 16);
2458                         // handle underflow
2459                         if (readl(reply+20) < cmd->underflow) {
2460                                 cmd->result = (DID_ERROR <<16);
2461                                 printk(KERN_WARNING"%s: SCSI CMD underflow\n",pHba->name);
2462                         }
2463                         break;
2464                 case I2O_SCSI_DSC_REQUEST_ABORTED:
2465                         cmd->result = (DID_ABORT << 16);
2466                         break;
2467                 case I2O_SCSI_DSC_PATH_INVALID:
2468                 case I2O_SCSI_DSC_DEVICE_NOT_PRESENT:
2469                 case I2O_SCSI_DSC_SELECTION_TIMEOUT:
2470                 case I2O_SCSI_DSC_COMMAND_TIMEOUT:
2471                 case I2O_SCSI_DSC_NO_ADAPTER:
2472                 case I2O_SCSI_DSC_RESOURCE_UNAVAILABLE:
2473                         printk(KERN_WARNING"%s: SCSI Timeout-Device (%d,%d,%d) hba status=0x%x, dev status=0x%x, cmd=0x%x\n",
2474                                 pHba->name, (u32)cmd->device->channel, (u32)cmd->device->id, (u32)cmd->device->lun, hba_status, dev_status, cmd->cmnd[0]);
2475                         cmd->result = (DID_TIME_OUT << 16);
2476                         break;
2477                 case I2O_SCSI_DSC_ADAPTER_BUSY:
2478                 case I2O_SCSI_DSC_BUS_BUSY:
2479                         cmd->result = (DID_BUS_BUSY << 16);
2480                         break;
2481                 case I2O_SCSI_DSC_SCSI_BUS_RESET:
2482                 case I2O_SCSI_DSC_BDR_MESSAGE_SENT:
2483                         cmd->result = (DID_RESET << 16);
2484                         break;
2485                 case I2O_SCSI_DSC_PARITY_ERROR_FAILURE:
2486                         printk(KERN_WARNING"%s: SCSI CMD parity error\n",pHba->name);
2487                         cmd->result = (DID_PARITY << 16);
2488                         break;
2489                 case I2O_SCSI_DSC_UNABLE_TO_ABORT:
2490                 case I2O_SCSI_DSC_COMPLETE_WITH_ERROR:
2491                 case I2O_SCSI_DSC_UNABLE_TO_TERMINATE:
2492                 case I2O_SCSI_DSC_MR_MESSAGE_RECEIVED:
2493                 case I2O_SCSI_DSC_AUTOSENSE_FAILED:
2494                 case I2O_SCSI_DSC_DATA_OVERRUN:
2495                 case I2O_SCSI_DSC_UNEXPECTED_BUS_FREE:
2496                 case I2O_SCSI_DSC_SEQUENCE_FAILURE:
2497                 case I2O_SCSI_DSC_REQUEST_LENGTH_ERROR:
2498                 case I2O_SCSI_DSC_PROVIDE_FAILURE:
2499                 case I2O_SCSI_DSC_REQUEST_TERMINATED:
2500                 case I2O_SCSI_DSC_IDE_MESSAGE_SENT:
2501                 case I2O_SCSI_DSC_UNACKNOWLEDGED_EVENT:
2502                 case I2O_SCSI_DSC_MESSAGE_RECEIVED:
2503                 case I2O_SCSI_DSC_INVALID_CDB:
2504                 case I2O_SCSI_DSC_LUN_INVALID:
2505                 case I2O_SCSI_DSC_SCSI_TID_INVALID:
2506                 case I2O_SCSI_DSC_FUNCTION_UNAVAILABLE:
2507                 case I2O_SCSI_DSC_NO_NEXUS:
2508                 case I2O_SCSI_DSC_CDB_RECEIVED:
2509                 case I2O_SCSI_DSC_LUN_ALREADY_ENABLED:
2510                 case I2O_SCSI_DSC_QUEUE_FROZEN:
2511                 case I2O_SCSI_DSC_REQUEST_INVALID:
2512                 default:
2513                         printk(KERN_WARNING"%s: SCSI error %0x-Device(%d,%d,%d) hba_status=0x%x, dev_status=0x%x, cmd=0x%x\n",
2514                                 pHba->name, detailed_status & I2O_SCSI_DSC_MASK, (u32)cmd->device->channel, (u32)cmd->device->id, (u32)cmd->device->lun,
2515                                hba_status, dev_status, cmd->cmnd[0]);
2516                         cmd->result = (DID_ERROR << 16);
2517                         break;
2518                 }
2519
2520                 // copy over the request sense data if it was a check
2521                 // condition status
2522                 if (dev_status == SAM_STAT_CHECK_CONDITION) {
2523                         u32 len = min(SCSI_SENSE_BUFFERSIZE, 40);
2524                         // Copy over the sense data
2525                         memcpy_fromio(cmd->sense_buffer, (reply+28) , len);
2526                         if(cmd->sense_buffer[0] == 0x70 /* class 7 */ && 
2527                            cmd->sense_buffer[2] == DATA_PROTECT ){
2528                                 /* This is to handle an array failed */
2529                                 cmd->result = (DID_TIME_OUT << 16);
2530                                 printk(KERN_WARNING"%s: SCSI Data Protect-Device (%d,%d,%d) hba_status=0x%x, dev_status=0x%x, cmd=0x%x\n",
2531                                         pHba->name, (u32)cmd->device->channel, (u32)cmd->device->id, (u32)cmd->device->lun, 
2532                                         hba_status, dev_status, cmd->cmnd[0]);
2533
2534                         }
2535                 }
2536         } else {
2537                 /* In this condtion we could not talk to the tid
2538                  * the card rejected it.  We should signal a retry
2539                  * for a limitted number of retries.
2540                  */
2541                 cmd->result = (DID_TIME_OUT << 16);
2542                 printk(KERN_WARNING"%s: I2O MSG_FAIL - Device (%d,%d,%d) tid=%d, cmd=0x%x\n",
2543                         pHba->name, (u32)cmd->device->channel, (u32)cmd->device->id, (u32)cmd->device->lun,
2544                         ((struct adpt_device*)(cmd->device->hostdata))->tid, cmd->cmnd[0]);
2545         }
2546
2547         cmd->result |= (dev_status);
2548
2549         if(cmd->scsi_done != NULL){
2550                 cmd->scsi_done(cmd);
2551         } 
2552         return cmd->result;
2553 }
2554
2555
2556 static s32 adpt_rescan(adpt_hba* pHba)
2557 {
2558         s32 rcode;
2559         ulong flags = 0;
2560
2561         if(pHba->host)
2562                 spin_lock_irqsave(pHba->host->host_lock, flags);
2563         if ((rcode=adpt_i2o_lct_get(pHba)) < 0)
2564                 goto out;
2565         if ((rcode=adpt_i2o_reparse_lct(pHba)) < 0)
2566                 goto out;
2567         rcode = 0;
2568 out:    if(pHba->host)
2569                 spin_unlock_irqrestore(pHba->host->host_lock, flags);
2570         return rcode;
2571 }
2572
2573
2574 static s32 adpt_i2o_reparse_lct(adpt_hba* pHba)
2575 {
2576         int i;
2577         int max;
2578         int tid;
2579         struct i2o_device *d;
2580         i2o_lct *lct = pHba->lct;
2581         u8 bus_no = 0;
2582         s16 scsi_id;
2583         s16 scsi_lun;
2584         u32 buf[10]; // at least 8 u32's
2585         struct adpt_device* pDev = NULL;
2586         struct i2o_device* pI2o_dev = NULL;
2587         
2588         if (lct == NULL) {
2589                 printk(KERN_ERR "%s: LCT is empty???\n",pHba->name);
2590                 return -1;
2591         }
2592         
2593         max = lct->table_size;  
2594         max -= 3;
2595         max /= 9;
2596
2597         // Mark each drive as unscanned
2598         for (d = pHba->devices; d; d = d->next) {
2599                 pDev =(struct adpt_device*) d->owner;
2600                 if(!pDev){
2601                         continue;
2602                 }
2603                 pDev->state |= DPTI_DEV_UNSCANNED;
2604         }
2605
2606         printk(KERN_INFO "%s: LCT has %d entries.\n", pHba->name,max);
2607         
2608         for(i=0;i<max;i++) {
2609                 if( lct->lct_entry[i].user_tid != 0xfff){
2610                         continue;
2611                 }
2612
2613                 if( lct->lct_entry[i].class_id == I2O_CLASS_RANDOM_BLOCK_STORAGE ||
2614                     lct->lct_entry[i].class_id == I2O_CLASS_SCSI_PERIPHERAL ||
2615                     lct->lct_entry[i].class_id == I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL ){
2616                         tid = lct->lct_entry[i].tid;
2617                         if(adpt_i2o_query_scalar(pHba, tid, 0x8000, -1, buf, 32)<0) {
2618                                 printk(KERN_ERR"%s: Could not query device\n",pHba->name);
2619                                 continue;
2620                         }
2621                         bus_no = buf[0]>>16;
2622                         scsi_id = buf[1];
2623                         scsi_lun = (buf[2]>>8 )&0xff;
2624                         pDev = pHba->channel[bus_no].device[scsi_id];
2625                         /* da lun */
2626                         while(pDev) {
2627                                 if(pDev->scsi_lun == scsi_lun) {
2628                                         break;
2629                                 }
2630                                 pDev = pDev->next_lun;
2631                         }
2632                         if(!pDev ) { // Something new add it
2633                                 d = kmalloc(sizeof(struct i2o_device), GFP_KERNEL);
2634                                 if(d==NULL)
2635                                 {
2636                                         printk(KERN_CRIT "Out of memory for I2O device data.\n");
2637                                         return -ENOMEM;
2638                                 }
2639                                 
2640                                 d->controller = pHba;
2641                                 d->next = NULL;
2642
2643                                 memcpy(&d->lct_data, &lct->lct_entry[i], sizeof(i2o_lct_entry));
2644
2645                                 d->flags = 0;
2646                                 adpt_i2o_report_hba_unit(pHba, d);
2647                                 adpt_i2o_install_device(pHba, d);
2648         
2649                                 if(bus_no >= MAX_CHANNEL) {     // Something wrong skip it
2650                                         printk(KERN_WARNING"%s: Channel number %d out of range \n", pHba->name, bus_no);
2651                                         continue;
2652                                 }
2653                                 pDev = pHba->channel[bus_no].device[scsi_id];   
2654                                 if( pDev == NULL){
2655                                         pDev =  kzalloc(sizeof(struct adpt_device),GFP_KERNEL);
2656                                         if(pDev == NULL) {
2657                                                 return -ENOMEM;
2658                                         }
2659                                         pHba->channel[bus_no].device[scsi_id] = pDev;
2660                                 } else {
2661                                         while (pDev->next_lun) {
2662                                                 pDev = pDev->next_lun;
2663                                         }
2664                                         pDev = pDev->next_lun = kzalloc(sizeof(struct adpt_device),GFP_KERNEL);
2665                                         if(pDev == NULL) {
2666                                                 return -ENOMEM;
2667                                         }
2668                                 }
2669                                 pDev->tid = d->lct_data.tid;
2670                                 pDev->scsi_channel = bus_no;
2671                                 pDev->scsi_id = scsi_id;
2672                                 pDev->scsi_lun = scsi_lun;
2673                                 pDev->pI2o_dev = d;
2674                                 d->owner = pDev;
2675                                 pDev->type = (buf[0])&0xff;
2676                                 pDev->flags = (buf[0]>>8)&0xff;
2677                                 // Too late, SCSI system has made up it's mind, but what the hey ...
2678                                 if(scsi_id > pHba->top_scsi_id){
2679                                         pHba->top_scsi_id = scsi_id;
2680                                 }
2681                                 if(scsi_lun > pHba->top_scsi_lun){
2682                                         pHba->top_scsi_lun = scsi_lun;
2683                                 }
2684                                 continue;
2685                         } // end of new i2o device
2686
2687                         // We found an old device - check it
2688                         while(pDev) {
2689                                 if(pDev->scsi_lun == scsi_lun) {
2690                                         if(!scsi_device_online(pDev->pScsi_dev)) {
2691                                                 printk(KERN_WARNING"%s: Setting device (%d,%d,%d) back online\n",
2692                                                                 pHba->name,bus_no,scsi_id,scsi_lun);
2693                                                 if (pDev->pScsi_dev) {
2694                                                         scsi_device_set_state(pDev->pScsi_dev, SDEV_RUNNING);
2695                                                 }
2696                                         }
2697                                         d = pDev->pI2o_dev;
2698                                         if(d->lct_data.tid != tid) { // something changed
2699                                                 pDev->tid = tid;
2700                                                 memcpy(&d->lct_data, &lct->lct_entry[i], sizeof(i2o_lct_entry));
2701                                                 if (pDev->pScsi_dev) {
2702                                                         pDev->pScsi_dev->changed = TRUE;
2703                                                         pDev->pScsi_dev->removable = TRUE;
2704                                                 }
2705                                         }
2706                                         // Found it - mark it scanned
2707                                         pDev->state = DPTI_DEV_ONLINE;
2708                                         break;
2709                                 }
2710                                 pDev = pDev->next_lun;
2711                         }
2712                 }
2713         }
2714         for (pI2o_dev = pHba->devices; pI2o_dev; pI2o_dev = pI2o_dev->next) {
2715                 pDev =(struct adpt_device*) pI2o_dev->owner;
2716                 if(!pDev){
2717                         continue;
2718                 }
2719                 // Drive offline drives that previously existed but could not be found
2720                 // in the LCT table
2721                 if (pDev->state & DPTI_DEV_UNSCANNED){
2722                         pDev->state = DPTI_DEV_OFFLINE;
2723                         printk(KERN_WARNING"%s: Device (%d,%d,%d) offline\n",pHba->name,pDev->scsi_channel,pDev->scsi_id,pDev->scsi_lun);
2724                         if (pDev->pScsi_dev) {
2725                                 scsi_device_set_state(pDev->pScsi_dev, SDEV_OFFLINE);
2726                         }
2727                 }
2728         }
2729         return 0;
2730 }
2731
2732 static void adpt_fail_posted_scbs(adpt_hba* pHba)
2733 {
2734         struct scsi_cmnd*       cmd = NULL;
2735         struct scsi_device*     d = NULL;
2736
2737         shost_for_each_device(d, pHba->host) {
2738                 unsigned long flags;
2739                 spin_lock_irqsave(&d->list_lock, flags);
2740                 list_for_each_entry(cmd, &d->cmd_list, list) {
2741                         if(cmd->serial_number == 0){
2742                                 continue;
2743                         }
2744                         cmd->result = (DID_OK << 16) | (QUEUE_FULL <<1);
2745                         cmd->scsi_done(cmd);
2746                 }
2747                 spin_unlock_irqrestore(&d->list_lock, flags);
2748         }
2749 }
2750
2751
2752 /*============================================================================
2753  *  Routines from i2o subsystem
2754  *============================================================================
2755  */
2756
2757
2758
2759 /*
2760  *      Bring an I2O controller into HOLD state. See the spec.
2761  */
2762 static int adpt_i2o_activate_hba(adpt_hba* pHba)
2763 {
2764         int rcode;
2765
2766         if(pHba->initialized ) {
2767                 if (adpt_i2o_status_get(pHba) < 0) {
2768                         if((rcode = adpt_i2o_reset_hba(pHba)) != 0){
2769                                 printk(KERN_WARNING"%s: Could NOT reset.\n", pHba->name);
2770                                 return rcode;
2771                         }
2772                         if (adpt_i2o_status_get(pHba) < 0) {
2773                                 printk(KERN_INFO "HBA not responding.\n");
2774                                 return -1;
2775                         }
2776                 }
2777
2778                 if(pHba->status_block->iop_state == ADAPTER_STATE_FAULTED) {
2779                         printk(KERN_CRIT "%s: hardware fault\n", pHba->name);
2780                         return -1;
2781                 }
2782
2783                 if (pHba->status_block->iop_state == ADAPTER_STATE_READY ||
2784                     pHba->status_block->iop_state == ADAPTER_STATE_OPERATIONAL ||
2785                     pHba->status_block->iop_state == ADAPTER_STATE_HOLD ||
2786                     pHba->status_block->iop_state == ADAPTER_STATE_FAILED) {
2787                         adpt_i2o_reset_hba(pHba);                       
2788                         if (adpt_i2o_status_get(pHba) < 0 || pHba->status_block->iop_state != ADAPTER_STATE_RESET) {
2789                                 printk(KERN_ERR "%s: Failed to initialize.\n", pHba->name);
2790                                 return -1;
2791                         }
2792                 }
2793         } else {
2794                 if((rcode = adpt_i2o_reset_hba(pHba)) != 0){
2795                         printk(KERN_WARNING"%s: Could NOT reset.\n", pHba->name);
2796                         return rcode;
2797                 }
2798
2799         }
2800
2801         if (adpt_i2o_init_outbound_q(pHba) < 0) {
2802                 return -1;
2803         }
2804
2805         /* In HOLD state */
2806         
2807         if (adpt_i2o_hrt_get(pHba) < 0) {
2808                 return -1;
2809         }
2810
2811         return 0;
2812 }
2813
2814 /*
2815  *      Bring a controller online into OPERATIONAL state. 
2816  */
2817  
2818 static int adpt_i2o_online_hba(adpt_hba* pHba)
2819 {
2820         if (adpt_i2o_systab_send(pHba) < 0) {
2821                 adpt_i2o_delete_hba(pHba);
2822                 return -1;
2823         }
2824         /* In READY state */
2825
2826         if (adpt_i2o_enable_hba(pHba) < 0) {
2827                 adpt_i2o_delete_hba(pHba);
2828                 return -1;
2829         }
2830
2831         /* In OPERATIONAL state  */
2832         return 0;
2833 }
2834
2835 static s32 adpt_send_nop(adpt_hba*pHba,u32 m)
2836 {
2837         u32 __iomem *msg;
2838         ulong timeout = jiffies + 5*HZ;
2839
2840         while(m == EMPTY_QUEUE){
2841                 rmb();
2842                 m = readl(pHba->post_port);
2843                 if(m != EMPTY_QUEUE){
2844                         break;
2845                 }
2846                 if(time_after(jiffies,timeout)){
2847                         printk(KERN_ERR "%s: Timeout waiting for message frame!\n",pHba->name);
2848                         return 2;
2849                 }
2850                 schedule_timeout_uninterruptible(1);
2851         }
2852         msg = (u32 __iomem *)(pHba->msg_addr_virt + m);
2853         writel( THREE_WORD_MSG_SIZE | SGL_OFFSET_0,&msg[0]);
2854         writel( I2O_CMD_UTIL_NOP << 24 | HOST_TID << 12 | 0,&msg[1]);
2855         writel( 0,&msg[2]);
2856         wmb();
2857
2858         writel(m, pHba->post_port);
2859         wmb();
2860         return 0;
2861 }
2862
2863 static s32 adpt_i2o_init_outbound_q(adpt_hba* pHba)
2864 {
2865         u8 *status;
2866         dma_addr_t addr;
2867         u32 __iomem *msg = NULL;
2868         int i;
2869         ulong timeout = jiffies + TMOUT_INITOUTBOUND*HZ;
2870         u32 m;
2871
2872         do {
2873                 rmb();
2874                 m = readl(pHba->post_port);
2875                 if (m != EMPTY_QUEUE) {
2876                         break;
2877                 }
2878
2879                 if(time_after(jiffies,timeout)){
2880                         printk(KERN_WARNING"%s: Timeout waiting for message frame\n",pHba->name);
2881                         return -ETIMEDOUT;
2882                 }
2883                 schedule_timeout_uninterruptible(1);
2884         } while(m == EMPTY_QUEUE);
2885
2886         msg=(u32 __iomem *)(pHba->msg_addr_virt+m);
2887
2888         status = dma_alloc_coherent(&pHba->pDev->dev, 4, &addr, GFP_KERNEL);
2889         if (!status) {
2890                 adpt_send_nop(pHba, m);
2891                 printk(KERN_WARNING"%s: IOP reset failed - no free memory.\n",
2892                         pHba->name);
2893                 return -ENOMEM;
2894         }
2895         memset(status, 0, 4);
2896
2897         writel(EIGHT_WORD_MSG_SIZE| SGL_OFFSET_6, &msg[0]);
2898         writel(I2O_CMD_OUTBOUND_INIT<<24 | HOST_TID<<12 | ADAPTER_TID, &msg[1]);
2899         writel(0, &msg[2]);
2900         writel(0x0106, &msg[3]);        /* Transaction context */
2901         writel(4096, &msg[4]);          /* Host page frame size */
2902         writel((REPLY_FRAME_SIZE)<<16|0x80, &msg[5]);   /* Outbound msg frame size and Initcode */
2903         writel(0xD0000004, &msg[6]);            /* Simple SG LE, EOB */
2904         writel((u32)addr, &msg[7]);
2905
2906         writel(m, pHba->post_port);
2907         wmb();
2908
2909         // Wait for the reply status to come back
2910         do {
2911                 if (*status) {
2912                         if (*status != 0x01 /*I2O_EXEC_OUTBOUND_INIT_IN_PROGRESS*/) {
2913                                 break;
2914                         }
2915                 }
2916                 rmb();
2917                 if(time_after(jiffies,timeout)){
2918                         printk(KERN_WARNING"%s: Timeout Initializing\n",pHba->name);
2919                         /* We lose 4 bytes of "status" here, but we
2920                            cannot free these because controller may
2921                            awake and corrupt those bytes at any time */
2922                         /* dma_free_coherent(&pHba->pDev->dev, 4, status, addr); */
2923                         return -ETIMEDOUT;
2924                 }
2925                 schedule_timeout_uninterruptible(1);
2926         } while (1);
2927
2928         // If the command was successful, fill the fifo with our reply
2929         // message packets
2930         if(*status != 0x04 /*I2O_EXEC_OUTBOUND_INIT_COMPLETE*/) {
2931                 dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
2932                 return -2;
2933         }
2934         dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
2935
2936         if(pHba->reply_pool != NULL) {
2937                 dma_free_coherent(&pHba->pDev->dev,
2938                         pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
2939                         pHba->reply_pool, pHba->reply_pool_pa);
2940         }
2941
2942         pHba->reply_pool = dma_alloc_coherent(&pHba->pDev->dev,
2943                                 pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
2944                                 &pHba->reply_pool_pa, GFP_KERNEL);
2945         if (!pHba->reply_pool) {
2946                 printk(KERN_ERR "%s: Could not allocate reply pool\n", pHba->name);
2947                 return -ENOMEM;
2948         }
2949         memset(pHba->reply_pool, 0 , pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4);
2950
2951         for(i = 0; i < pHba->reply_fifo_size; i++) {
2952                 writel(pHba->reply_pool_pa + (i * REPLY_FRAME_SIZE * 4),
2953                         pHba->reply_port);
2954                 wmb();
2955         }
2956         adpt_i2o_status_get(pHba);
2957         return 0;
2958 }
2959
2960
2961 /*
2962  * I2O System Table.  Contains information about
2963  * all the IOPs in the system.  Used to inform IOPs
2964  * about each other's existence.
2965  *
2966  * sys_tbl_ver is the CurrentChangeIndicator that is
2967  * used by IOPs to track changes.
2968  */
2969
2970
2971
2972 static s32 adpt_i2o_status_get(adpt_hba* pHba)
2973 {
2974         ulong timeout;
2975         u32 m;
2976         u32 __iomem *msg;
2977         u8 *status_block=NULL;
2978
2979         if(pHba->status_block == NULL) {
2980                 pHba->status_block = dma_alloc_coherent(&pHba->pDev->dev,
2981                                         sizeof(i2o_status_block),
2982                                         &pHba->status_block_pa, GFP_KERNEL);
2983                 if(pHba->status_block == NULL) {
2984                         printk(KERN_ERR
2985                         "dpti%d: Get Status Block failed; Out of memory. \n", 
2986                         pHba->unit);
2987                         return -ENOMEM;
2988                 }
2989         }
2990         memset(pHba->status_block, 0, sizeof(i2o_status_block));
2991         status_block = (u8*)(pHba->status_block);
2992         timeout = jiffies+TMOUT_GETSTATUS*HZ;
2993         do {
2994                 rmb();
2995                 m = readl(pHba->post_port);
2996                 if (m != EMPTY_QUEUE) {
2997                         break;
2998                 }
2999                 if(time_after(jiffies,timeout)){
3000                         printk(KERN_ERR "%s: Timeout waiting for message !\n",
3001                                         pHba->name);
3002                         return -ETIMEDOUT;
3003                 }
3004                 schedule_timeout_uninterruptible(1);
3005         } while(m==EMPTY_QUEUE);
3006
3007         
3008         msg=(u32 __iomem *)(pHba->msg_addr_virt+m);
3009
3010         writel(NINE_WORD_MSG_SIZE|SGL_OFFSET_0, &msg[0]);
3011         writel(I2O_CMD_STATUS_GET<<24|HOST_TID<<12|ADAPTER_TID, &msg[1]);
3012         writel(1, &msg[2]);
3013         writel(0, &msg[3]);
3014         writel(0, &msg[4]);
3015         writel(0, &msg[5]);
3016         writel( dma_low(pHba->status_block_pa), &msg[6]);
3017         writel( dma_high(pHba->status_block_pa), &msg[7]);
3018         writel(sizeof(i2o_status_block), &msg[8]); // 88 bytes
3019
3020         //post message
3021         writel(m, pHba->post_port);
3022         wmb();
3023
3024         while(status_block[87]!=0xff){
3025                 if(time_after(jiffies,timeout)){
3026                         printk(KERN_ERR"dpti%d: Get status timeout.\n",
3027                                 pHba->unit);
3028                         return -ETIMEDOUT;
3029                 }
3030                 rmb();
3031                 schedule_timeout_uninterruptible(1);
3032         }
3033
3034         // Set up our number of outbound and inbound messages
3035         pHba->post_fifo_size = pHba->status_block->max_inbound_frames;
3036         if (pHba->post_fifo_size > MAX_TO_IOP_MESSAGES) {
3037                 pHba->post_fifo_size = MAX_TO_IOP_MESSAGES;
3038         }
3039
3040         pHba->reply_fifo_size = pHba->status_block->max_outbound_frames;
3041         if (pHba->reply_fifo_size > MAX_FROM_IOP_MESSAGES) {
3042                 pHba->reply_fifo_size = MAX_FROM_IOP_MESSAGES;
3043         }
3044
3045         // Calculate the Scatter Gather list size
3046         if (dpt_dma64(pHba)) {
3047                 pHba->sg_tablesize
3048                   = ((pHba->status_block->inbound_frame_size * 4
3049                   - 14 * sizeof(u32))
3050                   / (sizeof(struct sg_simple_element) + sizeof(u32)));
3051         } else {
3052                 pHba->sg_tablesize
3053                   = ((pHba->status_block->inbound_frame_size * 4
3054                   - 12 * sizeof(u32))
3055                   / sizeof(struct sg_simple_element));
3056         }
3057         if (pHba->sg_tablesize > SG_LIST_ELEMENTS) {
3058                 pHba->sg_tablesize = SG_LIST_ELEMENTS;
3059         }
3060
3061
3062 #ifdef DEBUG
3063         printk("dpti%d: State = ",pHba->unit);
3064         switch(pHba->status_block->iop_state) {
3065                 case 0x01:
3066                         printk("INIT\n");
3067                         break;
3068                 case 0x02:
3069                         printk("RESET\n");
3070                         break;
3071                 case 0x04:
3072                         printk("HOLD\n");
3073                         break;
3074                 case 0x05:
3075                         printk("READY\n");
3076                         break;
3077                 case 0x08:
3078                         printk("OPERATIONAL\n");
3079                         break;
3080                 case 0x10:
3081                         printk("FAILED\n");
3082                         break;
3083                 case 0x11:
3084                         printk("FAULTED\n");
3085                         break;
3086                 default:
3087                         printk("%x (unknown!!)\n",pHba->status_block->iop_state);
3088         }
3089 #endif
3090         return 0;
3091 }
3092
3093 /*
3094  * Get the IOP's Logical Configuration Table
3095  */
3096 static int adpt_i2o_lct_get(adpt_hba* pHba)
3097 {
3098         u32 msg[8];
3099         int ret;
3100         u32 buf[16];
3101
3102         if ((pHba->lct_size == 0) || (pHba->lct == NULL)){
3103                 pHba->lct_size = pHba->status_block->expected_lct_size;
3104         }
3105         do {
3106                 if (pHba->lct == NULL) {
3107                         pHba->lct = dma_alloc_coherent(&pHba->pDev->dev,
3108                                         pHba->lct_size, &pHba->lct_pa,
3109                                         GFP_KERNEL);
3110                         if(pHba->lct == NULL) {
3111                                 printk(KERN_CRIT "%s: Lct Get failed. Out of memory.\n",
3112                                         pHba->name);
3113                                 return -ENOMEM;
3114                         }
3115                 }
3116                 memset(pHba->lct, 0, pHba->lct_size);
3117
3118                 msg[0] = EIGHT_WORD_MSG_SIZE|SGL_OFFSET_6;
3119                 msg[1] = I2O_CMD_LCT_NOTIFY<<24 | HOST_TID<<12 | ADAPTER_TID;
3120                 msg[2] = 0;
3121                 msg[3] = 0;
3122                 msg[4] = 0xFFFFFFFF;    /* All devices */
3123                 msg[5] = 0x00000000;    /* Report now */
3124                 msg[6] = 0xD0000000|pHba->lct_size;
3125                 msg[7] = (u32)pHba->lct_pa;
3126
3127                 if ((ret=adpt_i2o_post_wait(pHba, msg, sizeof(msg), 360))) {
3128                         printk(KERN_ERR "%s: LCT Get failed (status=%#10x.\n", 
3129                                 pHba->name, ret);       
3130                         printk(KERN_ERR"Adaptec: Error Reading Hardware.\n");
3131                         return ret;
3132                 }
3133
3134                 if ((pHba->lct->table_size << 2) > pHba->lct_size) {
3135                         pHba->lct_size = pHba->lct->table_size << 2;
3136                         dma_free_coherent(&pHba->pDev->dev, pHba->lct_size,
3137                                         pHba->lct, pHba->lct_pa);
3138                         pHba->lct = NULL;
3139                 }
3140         } while (pHba->lct == NULL);
3141
3142         PDEBUG("%s: Hardware resource table read.\n", pHba->name);
3143
3144
3145         // I2O_DPT_EXEC_IOP_BUFFERS_GROUP_NO;
3146         if(adpt_i2o_query_scalar(pHba, 0 , 0x8000, -1, buf, sizeof(buf))>=0) {
3147                 pHba->FwDebugBufferSize = buf[1];
3148                 pHba->FwDebugBuffer_P = ioremap(pHba->base_addr_phys + buf[0],
3149                                                 pHba->FwDebugBufferSize);
3150                 if (pHba->FwDebugBuffer_P) {
3151                         pHba->FwDebugFlags_P     = pHba->FwDebugBuffer_P +
3152                                                         FW_DEBUG_FLAGS_OFFSET;
3153                         pHba->FwDebugBLEDvalue_P = pHba->FwDebugBuffer_P +
3154                                                         FW_DEBUG_BLED_OFFSET;
3155                         pHba->FwDebugBLEDflag_P  = pHba->FwDebugBLEDvalue_P + 1;
3156                         pHba->FwDebugStrLength_P = pHba->FwDebugBuffer_P +
3157                                                 FW_DEBUG_STR_LENGTH_OFFSET;
3158                         pHba->FwDebugBuffer_P += buf[2]; 
3159                         pHba->FwDebugFlags = 0;
3160                 }
3161         }
3162
3163         return 0;
3164 }
3165
3166 static int adpt_i2o_build_sys_table(void)
3167 {
3168         adpt_hba* pHba = hba_chain;
3169         int count = 0;
3170
3171         if (sys_tbl)
3172                 dma_free_coherent(&pHba->pDev->dev, sys_tbl_len,
3173                                         sys_tbl, sys_tbl_pa);
3174
3175         sys_tbl_len = sizeof(struct i2o_sys_tbl) +      // Header + IOPs
3176                                 (hba_count) * sizeof(struct i2o_sys_tbl_entry);
3177
3178         sys_tbl = dma_alloc_coherent(&pHba->pDev->dev,
3179                                 sys_tbl_len, &sys_tbl_pa, GFP_KERNEL);
3180         if (!sys_tbl) {
3181                 printk(KERN_WARNING "SysTab Set failed. Out of memory.\n");     
3182                 return -ENOMEM;
3183         }
3184         memset(sys_tbl, 0, sys_tbl_len);
3185
3186         sys_tbl->num_entries = hba_count;
3187         sys_tbl->version = I2OVERSION;
3188         sys_tbl->change_ind = sys_tbl_ind++;
3189
3190         for(pHba = hba_chain; pHba; pHba = pHba->next) {
3191                 u64 addr;
3192                 // Get updated Status Block so we have the latest information
3193                 if (adpt_i2o_status_get(pHba)) {
3194                         sys_tbl->num_entries--;
3195                         continue; // try next one       
3196                 }
3197
3198                 sys_tbl->iops[count].org_id = pHba->status_block->org_id;
3199                 sys_tbl->iops[count].iop_id = pHba->unit + 2;
3200                 sys_tbl->iops[count].seg_num = 0;
3201                 sys_tbl->iops[count].i2o_version = pHba->status_block->i2o_version;
3202                 sys_tbl->iops[count].iop_state = pHba->status_block->iop_state;
3203                 sys_tbl->iops[count].msg_type = pHba->status_block->msg_type;
3204                 sys_tbl->iops[count].frame_size = pHba->status_block->inbound_frame_size;
3205                 sys_tbl->iops[count].last_changed = sys_tbl_ind - 1; // ??
3206                 sys_tbl->iops[count].iop_capabilities = pHba->status_block->iop_capabilities;
3207                 addr = pHba->base_addr_phys + 0x40;
3208                 sys_tbl->iops[count].inbound_low = dma_low(addr);
3209                 sys_tbl->iops[count].inbound_high = dma_high(addr);
3210
3211                 count++;
3212         }
3213
3214 #ifdef DEBUG
3215 {
3216         u32 *table = (u32*)sys_tbl;
3217         printk(KERN_DEBUG"sys_tbl_len=%d in 32bit words\n",(sys_tbl_len >>2));
3218         for(count = 0; count < (sys_tbl_len >>2); count++) {
3219                 printk(KERN_INFO "sys_tbl[%d] = %0#10x\n", 
3220                         count, table[count]);
3221         }
3222 }
3223 #endif
3224
3225         return 0;
3226 }
3227
3228
3229 /*
3230  *       Dump the information block associated with a given unit (TID)
3231  */
3232  
3233 static void adpt_i2o_report_hba_unit(adpt_hba* pHba, struct i2o_device *d)
3234 {
3235         char buf[64];
3236         int unit = d->lct_data.tid;
3237
3238         printk(KERN_INFO "TID %3.3d ", unit);
3239
3240         if(adpt_i2o_query_scalar(pHba, unit, 0xF100, 3, buf, 16)>=0)
3241         {
3242                 buf[16]=0;
3243                 printk(" Vendor: %-12.12s", buf);
3244         }
3245         if(adpt_i2o_query_scalar(pHba, unit, 0xF100, 4, buf, 16)>=0)
3246         {
3247                 buf[16]=0;
3248                 printk(" Device: %-12.12s", buf);
3249         }
3250         if(adpt_i2o_query_scalar(pHba, unit, 0xF100, 6, buf, 8)>=0)
3251         {
3252                 buf[8]=0;
3253                 printk(" Rev: %-12.12s\n", buf);
3254         }
3255 #ifdef DEBUG
3256          printk(KERN_INFO "\tClass: %.21s\n", adpt_i2o_get_class_name(d->lct_data.class_id));
3257          printk(KERN_INFO "\tSubclass: 0x%04X\n", d->lct_data.sub_class);
3258          printk(KERN_INFO "\tFlags: ");
3259
3260          if(d->lct_data.device_flags&(1<<0))
3261                   printk("C");       // ConfigDialog requested
3262          if(d->lct_data.device_flags&(1<<1))
3263                   printk("U");       // Multi-user capable
3264          if(!(d->lct_data.device_flags&(1<<4)))
3265                   printk("P");       // Peer service enabled!
3266          if(!(d->lct_data.device_flags&(1<<5)))
3267                   printk("M");       // Mgmt service enabled!
3268          printk("\n");
3269 #endif
3270 }
3271
3272 #ifdef DEBUG
3273 /*
3274  *      Do i2o class name lookup
3275  */
3276 static const char *adpt_i2o_get_class_name(int class)
3277 {
3278         int idx = 16;
3279         static char *i2o_class_name[] = {
3280                 "Executive",
3281                 "Device Driver Module",
3282                 "Block Device",
3283                 "Tape Device",
3284                 "LAN Interface",
3285                 "WAN Interface",
3286                 "Fibre Channel Port",
3287                 "Fibre Channel Device",
3288                 "SCSI Device",
3289                 "ATE Port",
3290                 "ATE Device",
3291                 "Floppy Controller",
3292                 "Floppy Device",
3293                 "Secondary Bus Port",
3294                 "Peer Transport Agent",
3295                 "Peer Transport",
3296                 "Unknown"
3297         };
3298         
3299         switch(class&0xFFF) {
3300         case I2O_CLASS_EXECUTIVE:
3301                 idx = 0; break;
3302         case I2O_CLASS_DDM:
3303                 idx = 1; break;
3304         case I2O_CLASS_RANDOM_BLOCK_STORAGE:
3305                 idx = 2; break;
3306         case I2O_CLASS_SEQUENTIAL_STORAGE:
3307                 idx = 3; break;
3308         case I2O_CLASS_LAN:
3309                 idx = 4; break;
3310         case I2O_CLASS_WAN:
3311                 idx = 5; break;
3312         case I2O_CLASS_FIBRE_CHANNEL_PORT:
3313                 idx = 6; break;
3314         case I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL:
3315                 idx = 7; break;
3316         case I2O_CLASS_SCSI_PERIPHERAL:
3317                 idx = 8; break;
3318         case I2O_CLASS_ATE_PORT:
3319                 idx = 9; break;
3320         case I2O_CLASS_ATE_PERIPHERAL:
3321                 idx = 10; break;
3322         case I2O_CLASS_FLOPPY_CONTROLLER:
3323                 idx = 11; break;
3324         case I2O_CLASS_FLOPPY_DEVICE:
3325                 idx = 12; break;
3326         case I2O_CLASS_BUS_ADAPTER_PORT:
3327                 idx = 13; break;
3328         case I2O_CLASS_PEER_TRANSPORT_AGENT:
3329                 idx = 14; break;
3330         case I2O_CLASS_PEER_TRANSPORT:
3331                 idx = 15; break;
3332         }
3333         return i2o_class_name[idx];
3334 }
3335 #endif
3336
3337
3338 static s32 adpt_i2o_hrt_get(adpt_hba* pHba)
3339 {
3340         u32 msg[6];
3341         int ret, size = sizeof(i2o_hrt);
3342
3343         do {
3344                 if (pHba->hrt == NULL) {
3345                         pHba->hrt = dma_alloc_coherent(&pHba->pDev->dev,
3346                                         size, &pHba->hrt_pa, GFP_KERNEL);
3347                         if (pHba->hrt == NULL) {
3348                                 printk(KERN_CRIT "%s: Hrt Get failed; Out of memory.\n", pHba->name);
3349                                 return -ENOMEM;
3350                         }
3351                 }
3352
3353                 msg[0]= SIX_WORD_MSG_SIZE| SGL_OFFSET_4;
3354                 msg[1]= I2O_CMD_HRT_GET<<24 | HOST_TID<<12 | ADAPTER_TID;
3355                 msg[2]= 0;
3356                 msg[3]= 0;
3357                 msg[4]= (0xD0000000 | size);    /* Simple transaction */
3358                 msg[5]= (u32)pHba->hrt_pa;      /* Dump it here */
3359
3360                 if ((ret = adpt_i2o_post_wait(pHba, msg, sizeof(msg),20))) {
3361                         printk(KERN_ERR "%s: Unable to get HRT (status=%#10x)\n", pHba->name, ret);
3362                         return ret;
3363                 }
3364
3365                 if (pHba->hrt->num_entries * pHba->hrt->entry_len << 2 > size) {
3366                         int newsize = pHba->hrt->num_entries * pHba->hrt->entry_len << 2;
3367                         dma_free_coherent(&pHba->pDev->dev, size,
3368                                 pHba->hrt, pHba->hrt_pa);
3369                         size = newsize;
3370                         pHba->hrt = NULL;
3371                 }
3372         } while(pHba->hrt == NULL);
3373         return 0;
3374 }                                                                                                                                       
3375
3376 /*
3377  *       Query one scalar group value or a whole scalar group.
3378  */                     
3379 static int adpt_i2o_query_scalar(adpt_hba* pHba, int tid, 
3380                         int group, int field, void *buf, int buflen)
3381 {
3382         u16 opblk[] = { 1, 0, I2O_PARAMS_FIELD_GET, group, 1, field };
3383         u8 *opblk_va;
3384         dma_addr_t opblk_pa;
3385         u8 *resblk_va;
3386         dma_addr_t resblk_pa;
3387
3388         int size;
3389
3390         /* 8 bytes for header */
3391         resblk_va = dma_alloc_coherent(&pHba->pDev->dev,
3392                         sizeof(u8) * (8 + buflen), &resblk_pa, GFP_KERNEL);
3393         if (resblk_va == NULL) {
3394                 printk(KERN_CRIT "%s: query scalar failed; Out of memory.\n", pHba->name);
3395                 return -ENOMEM;
3396         }
3397
3398         opblk_va = dma_alloc_coherent(&pHba->pDev->dev,
3399                         sizeof(opblk), &opblk_pa, GFP_KERNEL);
3400         if (opblk_va == NULL) {
3401                 dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
3402                         resblk_va, resblk_pa);
3403                 printk(KERN_CRIT "%s: query operatio failed; Out of memory.\n",
3404                         pHba->name);
3405                 return -ENOMEM;
3406         }
3407         if (field == -1)                /* whole group */
3408                         opblk[4] = -1;
3409
3410         memcpy(opblk_va, opblk, sizeof(opblk));
3411         size = adpt_i2o_issue_params(I2O_CMD_UTIL_PARAMS_GET, pHba, tid, 
3412                 opblk_va, opblk_pa, sizeof(opblk),
3413                 resblk_va, resblk_pa, sizeof(u8)*(8+buflen));
3414         dma_free_coherent(&pHba->pDev->dev, sizeof(opblk), opblk_va, opblk_pa);
3415         if (size == -ETIME) {
3416                 dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
3417                                                         resblk_va, resblk_pa);
3418                 printk(KERN_WARNING "%s: issue params failed; Timed out.\n", pHba->name);
3419                 return -ETIME;
3420         } else if (size == -EINTR) {
3421                 dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
3422                                                         resblk_va, resblk_pa);
3423                 printk(KERN_WARNING "%s: issue params failed; Interrupted.\n", pHba->name);
3424                 return -EINTR;
3425         }
3426                         
3427         memcpy(buf, resblk_va+8, buflen);  /* cut off header */
3428
3429         dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
3430                                                 resblk_va, resblk_pa);
3431         if (size < 0)
3432                 return size;    
3433
3434         return buflen;
3435 }
3436
3437
3438 /*      Issue UTIL_PARAMS_GET or UTIL_PARAMS_SET
3439  *
3440  *      This function can be used for all UtilParamsGet/Set operations.
3441  *      The OperationBlock is given in opblk-buffer, 
3442  *      and results are returned in resblk-buffer.
3443  *      Note that the minimum sized resblk is 8 bytes and contains
3444  *      ResultCount, ErrorInfoSize, BlockStatus and BlockSize.
3445  */
3446 static int adpt_i2o_issue_params(int cmd, adpt_hba* pHba, int tid, 
3447                   void *opblk_va,  dma_addr_t opblk_pa, int oplen,
3448                 void *resblk_va, dma_addr_t resblk_pa, int reslen)
3449 {
3450         u32 msg[9]; 
3451         u32 *res = (u32 *)resblk_va;
3452         int wait_status;
3453
3454         msg[0] = NINE_WORD_MSG_SIZE | SGL_OFFSET_5;
3455         msg[1] = cmd << 24 | HOST_TID << 12 | tid; 
3456         msg[2] = 0;
3457         msg[3] = 0;
3458         msg[4] = 0;
3459         msg[5] = 0x54000000 | oplen;    /* OperationBlock */
3460         msg[6] = (u32)opblk_pa;
3461         msg[7] = 0xD0000000 | reslen;   /* ResultBlock */
3462         msg[8] = (u32)resblk_pa;
3463
3464         if ((wait_status = adpt_i2o_post_wait(pHba, msg, sizeof(msg), 20))) {
3465                 printk("adpt_i2o_issue_params: post_wait failed (%p)\n", resblk_va);
3466                 return wait_status;     /* -DetailedStatus */
3467         }
3468
3469         if (res[1]&0x00FF0000) {        /* BlockStatus != SUCCESS */
3470                 printk(KERN_WARNING "%s: %s - Error:\n  ErrorInfoSize = 0x%02x, "
3471                         "BlockStatus = 0x%02x, BlockSize = 0x%04x\n",
3472                         pHba->name,
3473                         (cmd == I2O_CMD_UTIL_PARAMS_SET) ? "PARAMS_SET"
3474                                                          : "PARAMS_GET",   
3475                         res[1]>>24, (res[1]>>16)&0xFF, res[1]&0xFFFF);
3476                 return -((res[1] >> 16) & 0xFF); /* -BlockStatus */
3477         }
3478
3479          return 4 + ((res[1] & 0x0000FFFF) << 2); /* bytes used in resblk */ 
3480 }
3481
3482
3483 static s32 adpt_i2o_quiesce_hba(adpt_hba* pHba)
3484 {
3485         u32 msg[4];
3486         int ret;
3487
3488         adpt_i2o_status_get(pHba);
3489
3490         /* SysQuiesce discarded if IOP not in READY or OPERATIONAL state */
3491
3492         if((pHba->status_block->iop_state != ADAPTER_STATE_READY) &&
3493            (pHba->status_block->iop_state != ADAPTER_STATE_OPERATIONAL)){
3494                 return 0;
3495         }
3496
3497         msg[0] = FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
3498         msg[1] = I2O_CMD_SYS_QUIESCE<<24|HOST_TID<<12|ADAPTER_TID;
3499         msg[2] = 0;
3500         msg[3] = 0;
3501
3502         if((ret = adpt_i2o_post_wait(pHba, msg, sizeof(msg), 240))) {
3503                 printk(KERN_INFO"dpti%d: Unable to quiesce (status=%#x).\n",
3504                                 pHba->unit, -ret);
3505         } else {
3506                 printk(KERN_INFO"dpti%d: Quiesced.\n",pHba->unit);
3507         }
3508
3509         adpt_i2o_status_get(pHba);
3510         return ret;
3511 }
3512
3513
3514 /* 
3515  * Enable IOP. Allows the IOP to resume external operations.
3516  */
3517 static int adpt_i2o_enable_hba(adpt_hba* pHba)
3518 {
3519         u32 msg[4];
3520         int ret;
3521         
3522         adpt_i2o_status_get(pHba);
3523         if(!pHba->status_block){
3524                 return -ENOMEM;
3525         }
3526         /* Enable only allowed on READY state */
3527         if(pHba->status_block->iop_state == ADAPTER_STATE_OPERATIONAL)
3528                 return 0;
3529
3530         if(pHba->status_block->iop_state != ADAPTER_STATE_READY)
3531                 return -EINVAL;
3532
3533         msg[0]=FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
3534         msg[1]=I2O_CMD_SYS_ENABLE<<24|HOST_TID<<12|ADAPTER_TID;
3535         msg[2]= 0;
3536         msg[3]= 0;
3537
3538         if ((ret = adpt_i2o_post_wait(pHba, msg, sizeof(msg), 240))) {
3539                 printk(KERN_WARNING"%s: Could not enable (status=%#10x).\n", 
3540                         pHba->name, ret);
3541         } else {
3542                 PDEBUG("%s: Enabled.\n", pHba->name);
3543         }
3544
3545         adpt_i2o_status_get(pHba);
3546         return ret;
3547 }
3548
3549
3550 static int adpt_i2o_systab_send(adpt_hba* pHba)
3551 {
3552          u32 msg[12];
3553          int ret;
3554
3555         msg[0] = I2O_MESSAGE_SIZE(12) | SGL_OFFSET_6;
3556         msg[1] = I2O_CMD_SYS_TAB_SET<<24 | HOST_TID<<12 | ADAPTER_TID;
3557         msg[2] = 0;
3558         msg[3] = 0;
3559         msg[4] = (0<<16) | ((pHba->unit+2) << 12); /* Host 0 IOP ID (unit + 2) */
3560         msg[5] = 0;                                /* Segment 0 */
3561
3562         /* 
3563          * Provide three SGL-elements:
3564          * System table (SysTab), Private memory space declaration and 
3565          * Private i/o space declaration  
3566          */
3567         msg[6] = 0x54000000 | sys_tbl_len;
3568         msg[7] = (u32)sys_tbl_pa;
3569         msg[8] = 0x54000000 | 0;
3570         msg[9] = 0;
3571         msg[10] = 0xD4000000 | 0;
3572         msg[11] = 0;
3573
3574         if ((ret=adpt_i2o_post_wait(pHba, msg, sizeof(msg), 120))) {
3575                 printk(KERN_INFO "%s: Unable to set SysTab (status=%#10x).\n", 
3576                         pHba->name, ret);
3577         }
3578 #ifdef DEBUG
3579         else {
3580                 PINFO("%s: SysTab set.\n", pHba->name);
3581         }
3582 #endif
3583
3584         return ret;     
3585  }
3586
3587
3588 /*============================================================================
3589  *
3590  *============================================================================
3591  */
3592
3593
3594 #ifdef UARTDELAY 
3595
3596 static static void adpt_delay(int millisec)
3597 {
3598         int i;
3599         for (i = 0; i < millisec; i++) {
3600                 udelay(1000);   /* delay for one millisecond */
3601         }
3602 }
3603
3604 #endif
3605
3606 static struct scsi_host_template driver_template = {
3607         .module                 = THIS_MODULE,
3608         .name                   = "dpt_i2o",
3609         .proc_name              = "dpt_i2o",
3610         .proc_info              = adpt_proc_info,
3611         .info                   = adpt_info,
3612         .queuecommand           = adpt_queue,
3613         .eh_abort_handler       = adpt_abort,
3614         .eh_device_reset_handler = adpt_device_reset,
3615         .eh_bus_reset_handler   = adpt_bus_reset,
3616         .eh_host_reset_handler  = adpt_reset,
3617         .bios_param             = adpt_bios_param,
3618         .slave_configure        = adpt_slave_configure,
3619         .can_queue              = MAX_TO_IOP_MESSAGES,
3620         .this_id                = 7,
3621         .cmd_per_lun            = 1,
3622         .use_clustering         = ENABLE_CLUSTERING,
3623 };
3624
3625 static int __init adpt_init(void)
3626 {
3627         int             error;
3628         adpt_hba        *pHba, *next;
3629
3630         printk("Loading Adaptec I2O RAID: Version " DPT_I2O_VERSION "\n");
3631
3632         error = adpt_detect(&driver_template);
3633         if (error < 0)
3634                 return error;
3635         if (hba_chain == NULL)
3636                 return -ENODEV;
3637
3638         for (pHba = hba_chain; pHba; pHba = pHba->next) {
3639                 error = scsi_add_host(pHba->host, &pHba->pDev->dev);
3640                 if (error)
3641                         goto fail;
3642                 scsi_scan_host(pHba->host);
3643         }
3644         return 0;
3645 fail:
3646         for (pHba = hba_chain; pHba; pHba = next) {
3647                 next = pHba->next;
3648                 scsi_remove_host(pHba->host);
3649         }
3650         return error;
3651 }
3652
3653 static void __exit adpt_exit(void)
3654 {
3655         adpt_hba        *pHba, *next;
3656
3657         for (pHba = hba_chain; pHba; pHba = pHba->next)
3658                 scsi_remove_host(pHba->host);
3659         for (pHba = hba_chain; pHba; pHba = next) {
3660                 next = pHba->next;
3661                 adpt_release(pHba->host);
3662         }
3663 }
3664
3665 module_init(adpt_init);
3666 module_exit(adpt_exit);
3667
3668 MODULE_LICENSE("GPL");