GNU Linux-libre 5.10.219-gnu1
[releases.git] / drivers / scsi / aacraid / comminit.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *      Adaptec AAC series RAID controller driver
4  *      (c) Copyright 2001 Red Hat Inc.
5  *
6  * based on the old aacraid driver that is..
7  * Adaptec aacraid device driver for Linux.
8  *
9  * Copyright (c) 2000-2010 Adaptec, Inc.
10  *               2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
11  *               2016-2017 Microsemi Corp. (aacraid@microsemi.com)
12  *
13  * Module Name:
14  *  comminit.c
15  *
16  * Abstract: This supports the initialization of the host adapter commuication interface.
17  *    This is a platform dependent module for the pci cyclone board.
18  */
19
20 #include <linux/kernel.h>
21 #include <linux/init.h>
22 #include <linux/types.h>
23 #include <linux/pci.h>
24 #include <linux/spinlock.h>
25 #include <linux/slab.h>
26 #include <linux/blkdev.h>
27 #include <linux/delay.h>
28 #include <linux/completion.h>
29 #include <linux/mm.h>
30 #include <scsi/scsi_host.h>
31 #include <scsi/scsi_device.h>
32 #include <scsi/scsi_cmnd.h>
33
34 #include "aacraid.h"
35
36 struct aac_common aac_config = {
37         .irq_mod = 1
38 };
39
40 static inline int aac_is_msix_mode(struct aac_dev *dev)
41 {
42         u32 status = 0;
43
44         if (aac_is_src(dev))
45                 status = src_readl(dev, MUnit.OMR);
46         return (status & AAC_INT_MODE_MSIX);
47 }
48
49 static inline void aac_change_to_intx(struct aac_dev *dev)
50 {
51         aac_src_access_devreg(dev, AAC_DISABLE_MSIX);
52         aac_src_access_devreg(dev, AAC_ENABLE_INTX);
53 }
54
55 static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign)
56 {
57         unsigned char *base;
58         unsigned long size, align;
59         const unsigned long fibsize = dev->max_fib_size;
60         const unsigned long printfbufsiz = 256;
61         unsigned long host_rrq_size, aac_init_size;
62         union aac_init *init;
63         dma_addr_t phys;
64         unsigned long aac_max_hostphysmempages;
65
66         if ((dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) ||
67                 (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) ||
68                 (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 &&
69                 !dev->sa_firmware)) {
70                 host_rrq_size =
71                         (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB)
72                                 * sizeof(u32);
73                 aac_init_size = sizeof(union aac_init);
74         } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 &&
75                 dev->sa_firmware) {
76                 host_rrq_size = (dev->scsi_host_ptr->can_queue
77                         + AAC_NUM_MGT_FIB) * sizeof(u32)  * AAC_MAX_MSIX;
78                 aac_init_size = sizeof(union aac_init) +
79                         (AAC_MAX_HRRQ - 1) * sizeof(struct _rrq);
80         } else {
81                 host_rrq_size = 0;
82                 aac_init_size = sizeof(union aac_init);
83         }
84         size = fibsize + aac_init_size + commsize + commalign +
85                         printfbufsiz + host_rrq_size;
86
87         base = dma_alloc_coherent(&dev->pdev->dev, size, &phys, GFP_KERNEL);
88         if (base == NULL) {
89                 printk(KERN_ERR "aacraid: unable to create mapping.\n");
90                 return 0;
91         }
92
93         dev->comm_addr = (void *)base;
94         dev->comm_phys = phys;
95         dev->comm_size = size;
96
97         if ((dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) ||
98             (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) ||
99             (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3)) {
100                 dev->host_rrq = (u32 *)(base + fibsize);
101                 dev->host_rrq_pa = phys + fibsize;
102                 memset(dev->host_rrq, 0, host_rrq_size);
103         }
104
105         dev->init = (union aac_init *)(base + fibsize + host_rrq_size);
106         dev->init_pa = phys + fibsize + host_rrq_size;
107
108         init = dev->init;
109
110         if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3) {
111                 int i;
112                 u64 addr;
113
114                 init->r8.init_struct_revision =
115                         cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_8);
116                 init->r8.init_flags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
117                                         INITFLAGS_DRIVER_USES_UTC_TIME |
118                                         INITFLAGS_DRIVER_SUPPORTS_PM);
119                 init->r8.init_flags |=
120                                 cpu_to_le32(INITFLAGS_DRIVER_SUPPORTS_HBA_MODE);
121                 init->r8.rr_queue_count = cpu_to_le32(dev->max_msix);
122                 init->r8.max_io_size =
123                         cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
124                 init->r8.max_num_aif = init->r8.reserved1 =
125                         init->r8.reserved2 = 0;
126
127                 for (i = 0; i < dev->max_msix; i++) {
128                         addr = (u64)dev->host_rrq_pa + dev->vector_cap * i *
129                                         sizeof(u32);
130                         init->r8.rrq[i].host_addr_high = cpu_to_le32(
131                                                 upper_32_bits(addr));
132                         init->r8.rrq[i].host_addr_low = cpu_to_le32(
133                                                 lower_32_bits(addr));
134                         init->r8.rrq[i].msix_id = i;
135                         init->r8.rrq[i].element_count = cpu_to_le16(
136                                         (u16)dev->vector_cap);
137                         init->r8.rrq[i].comp_thresh =
138                                         init->r8.rrq[i].unused = 0;
139                 }
140
141                 pr_warn("aacraid: Comm Interface type3 enabled\n");
142         } else {
143                 init->r7.init_struct_revision =
144                         cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION);
145                 if (dev->max_fib_size != sizeof(struct hw_fib))
146                         init->r7.init_struct_revision =
147                                 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4);
148                 init->r7.no_of_msix_vectors = cpu_to_le32(SA_MINIPORT_REVISION);
149                 init->r7.fsrev = cpu_to_le32(dev->fsrev);
150
151                 /*
152                  *      Adapter Fibs are the first thing allocated so that they
153                  *      start page aligned
154                  */
155                 dev->aif_base_va = (struct hw_fib *)base;
156
157                 init->r7.adapter_fibs_virtual_address = 0;
158                 init->r7.adapter_fibs_physical_address = cpu_to_le32((u32)phys);
159                 init->r7.adapter_fibs_size = cpu_to_le32(fibsize);
160                 init->r7.adapter_fib_align = cpu_to_le32(sizeof(struct hw_fib));
161
162                 /*
163                  * number of 4k pages of host physical memory. The aacraid fw
164                  * needs this number to be less than 4gb worth of pages. New
165                  * firmware doesn't have any issues with the mapping system, but
166                  * older Firmware did, and had *troubles* dealing with the math
167                  * overloading past 32 bits, thus we must limit this field.
168                  */
169                 aac_max_hostphysmempages =
170                                 dma_get_required_mask(&dev->pdev->dev) >> 12;
171                 if (aac_max_hostphysmempages < AAC_MAX_HOSTPHYSMEMPAGES)
172                         init->r7.host_phys_mem_pages =
173                                         cpu_to_le32(aac_max_hostphysmempages);
174                 else
175                         init->r7.host_phys_mem_pages =
176                                         cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES);
177
178                 init->r7.init_flags =
179                         cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME |
180                         INITFLAGS_DRIVER_SUPPORTS_PM);
181                 init->r7.max_io_commands =
182                         cpu_to_le32(dev->scsi_host_ptr->can_queue +
183                                         AAC_NUM_MGT_FIB);
184                 init->r7.max_io_size =
185                         cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
186                 init->r7.max_fib_size = cpu_to_le32(dev->max_fib_size);
187                 init->r7.max_num_aif = cpu_to_le32(dev->max_num_aif);
188
189                 if (dev->comm_interface == AAC_COMM_MESSAGE) {
190                         init->r7.init_flags |=
191                                 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED);
192                         pr_warn("aacraid: Comm Interface enabled\n");
193                 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) {
194                         init->r7.init_struct_revision =
195                                 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_6);
196                         init->r7.init_flags |=
197                                 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
198                                 INITFLAGS_NEW_COMM_TYPE1_SUPPORTED |
199                                 INITFLAGS_FAST_JBOD_SUPPORTED);
200                         init->r7.host_rrq_addr_high =
201                                 cpu_to_le32(upper_32_bits(dev->host_rrq_pa));
202                         init->r7.host_rrq_addr_low =
203                                 cpu_to_le32(lower_32_bits(dev->host_rrq_pa));
204                         pr_warn("aacraid: Comm Interface type1 enabled\n");
205                 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
206                         init->r7.init_struct_revision =
207                                 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_7);
208                         init->r7.init_flags |=
209                                 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
210                                 INITFLAGS_NEW_COMM_TYPE2_SUPPORTED |
211                                 INITFLAGS_FAST_JBOD_SUPPORTED);
212                         init->r7.host_rrq_addr_high =
213                                 cpu_to_le32(upper_32_bits(dev->host_rrq_pa));
214                         init->r7.host_rrq_addr_low =
215                                 cpu_to_le32(lower_32_bits(dev->host_rrq_pa));
216                         init->r7.no_of_msix_vectors =
217                                 cpu_to_le32(dev->max_msix);
218                         /* must be the COMM_PREFERRED_SETTINGS values */
219                         pr_warn("aacraid: Comm Interface type2 enabled\n");
220                 }
221         }
222
223         /*
224          * Increment the base address by the amount already used
225          */
226         base = base + fibsize + host_rrq_size + aac_init_size;
227         phys = (dma_addr_t)((ulong)phys + fibsize + host_rrq_size +
228                         aac_init_size);
229
230         /*
231          *      Align the beginning of Headers to commalign
232          */
233         align = (commalign - ((uintptr_t)(base) & (commalign - 1)));
234         base = base + align;
235         phys = phys + align;
236         /*
237          *      Fill in addresses of the Comm Area Headers and Queues
238          */
239         *commaddr = base;
240         if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3)
241                 init->r7.comm_header_address = cpu_to_le32((u32)phys);
242         /*
243          *      Increment the base address by the size of the CommArea
244          */
245         base = base + commsize;
246         phys = phys + commsize;
247         /*
248          *       Place the Printf buffer area after the Fast I/O comm area.
249          */
250         dev->printfbuf = (void *)base;
251         if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3) {
252                 init->r7.printfbuf = cpu_to_le32(phys);
253                 init->r7.printfbufsiz = cpu_to_le32(printfbufsiz);
254         }
255         memset(base, 0, printfbufsiz);
256         return 1;
257 }
258
259 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize)
260 {
261         atomic_set(&q->numpending, 0);
262         q->dev = dev;
263         init_waitqueue_head(&q->cmdready);
264         INIT_LIST_HEAD(&q->cmdq);
265         init_waitqueue_head(&q->qfull);
266         spin_lock_init(&q->lockdata);
267         q->lock = &q->lockdata;
268         q->headers.producer = (__le32 *)mem;
269         q->headers.consumer = (__le32 *)(mem+1);
270         *(q->headers.producer) = cpu_to_le32(qsize);
271         *(q->headers.consumer) = cpu_to_le32(qsize);
272         q->entries = qsize;
273 }
274
275 static bool wait_for_io_iter(struct scsi_cmnd *cmd, void *data, bool rsvd)
276 {
277         int *active = data;
278
279         if (cmd->SCp.phase == AAC_OWNER_FIRMWARE)
280                 *active = *active + 1;
281         return true;
282 }
283 static void aac_wait_for_io_completion(struct aac_dev *aac)
284 {
285         int i = 0, active;
286
287         for (i = 60; i; --i) {
288
289                 active = 0;
290                 scsi_host_busy_iter(aac->scsi_host_ptr,
291                                     wait_for_io_iter, &active);
292                 /*
293                  * We can exit If all the commands are complete
294                  */
295                 if (active == 0)
296                         break;
297                 dev_info(&aac->pdev->dev,
298                          "Wait for %d commands to complete\n", active);
299                 ssleep(1);
300         }
301         if (active)
302                 dev_err(&aac->pdev->dev,
303                         "%d outstanding commands during shutdown\n", active);
304 }
305
306 /**
307  *      aac_send_shutdown               -       shutdown an adapter
308  *      @dev: Adapter to shutdown
309  *
310  *      This routine will send a VM_CloseAll (shutdown) request to the adapter.
311  */
312
313 int aac_send_shutdown(struct aac_dev * dev)
314 {
315         struct fib * fibctx;
316         struct aac_close *cmd;
317         int status = 0;
318
319         if (aac_adapter_check_health(dev))
320                 return status;
321
322         if (!dev->adapter_shutdown) {
323                 mutex_lock(&dev->ioctl_mutex);
324                 dev->adapter_shutdown = 1;
325                 mutex_unlock(&dev->ioctl_mutex);
326         }
327
328         aac_wait_for_io_completion(dev);
329
330         fibctx = aac_fib_alloc(dev);
331         if (!fibctx)
332                 return -ENOMEM;
333         aac_fib_init(fibctx);
334
335         cmd = (struct aac_close *) fib_data(fibctx);
336         cmd->command = cpu_to_le32(VM_CloseAll);
337         cmd->cid = cpu_to_le32(0xfffffffe);
338
339         status = aac_fib_send(ContainerCommand,
340                           fibctx,
341                           sizeof(struct aac_close),
342                           FsaNormal,
343                           -2 /* Timeout silently */, 1,
344                           NULL, NULL);
345
346         if (status >= 0)
347                 aac_fib_complete(fibctx);
348         /* FIB should be freed only after getting the response from the F/W */
349         if (status != -ERESTARTSYS)
350                 aac_fib_free(fibctx);
351         if (aac_is_src(dev) &&
352              dev->msi_enabled)
353                 aac_set_intx_mode(dev);
354         return status;
355 }
356
357 /**
358  *      aac_comm_init   -       Initialise FSA data structures
359  *      @dev:   Adapter to initialise
360  *
361  *      Initializes the data structures that are required for the FSA commuication
362  *      interface to operate. 
363  *      Returns
364  *              1 - if we were able to init the commuication interface.
365  *              0 - If there were errors initing. This is a fatal error.
366  */
367  
368 static int aac_comm_init(struct aac_dev * dev)
369 {
370         unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2;
371         unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES;
372         u32 *headers;
373         struct aac_entry * queues;
374         unsigned long size;
375         struct aac_queue_block * comm = dev->queues;
376         /*
377          *      Now allocate and initialize the zone structures used as our 
378          *      pool of FIB context records.  The size of the zone is based
379          *      on the system memory size.  We also initialize the mutex used
380          *      to protect the zone.
381          */
382         spin_lock_init(&dev->fib_lock);
383
384         /*
385          *      Allocate the physically contiguous space for the commuication
386          *      queue headers. 
387          */
388
389         size = hdrsize + queuesize;
390
391         if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT))
392                 return -ENOMEM;
393
394         queues = (struct aac_entry *)(((ulong)headers) + hdrsize);
395
396         /* Adapter to Host normal priority Command queue */ 
397         comm->queue[HostNormCmdQueue].base = queues;
398         aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES);
399         queues += HOST_NORM_CMD_ENTRIES;
400         headers += 2;
401
402         /* Adapter to Host high priority command queue */
403         comm->queue[HostHighCmdQueue].base = queues;
404         aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES);
405     
406         queues += HOST_HIGH_CMD_ENTRIES;
407         headers +=2;
408
409         /* Host to adapter normal priority command queue */
410         comm->queue[AdapNormCmdQueue].base = queues;
411         aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES);
412     
413         queues += ADAP_NORM_CMD_ENTRIES;
414         headers += 2;
415
416         /* host to adapter high priority command queue */
417         comm->queue[AdapHighCmdQueue].base = queues;
418         aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES);
419     
420         queues += ADAP_HIGH_CMD_ENTRIES;
421         headers += 2;
422
423         /* adapter to host normal priority response queue */
424         comm->queue[HostNormRespQueue].base = queues;
425         aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES);
426         queues += HOST_NORM_RESP_ENTRIES;
427         headers += 2;
428
429         /* adapter to host high priority response queue */
430         comm->queue[HostHighRespQueue].base = queues;
431         aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES);
432    
433         queues += HOST_HIGH_RESP_ENTRIES;
434         headers += 2;
435
436         /* host to adapter normal priority response queue */
437         comm->queue[AdapNormRespQueue].base = queues;
438         aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES);
439
440         queues += ADAP_NORM_RESP_ENTRIES;
441         headers += 2;
442         
443         /* host to adapter high priority response queue */ 
444         comm->queue[AdapHighRespQueue].base = queues;
445         aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES);
446
447         comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock;
448         comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock;
449         comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock;
450         comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock;
451
452         return 0;
453 }
454
455 void aac_define_int_mode(struct aac_dev *dev)
456 {
457         int i, msi_count, min_msix;
458
459         msi_count = i = 0;
460         /* max. vectors from GET_COMM_PREFERRED_SETTINGS */
461         if (dev->max_msix == 0 ||
462             dev->pdev->device == PMC_DEVICE_S6 ||
463             dev->sync_mode) {
464                 dev->max_msix = 1;
465                 dev->vector_cap =
466                         dev->scsi_host_ptr->can_queue +
467                         AAC_NUM_MGT_FIB;
468                 return;
469         }
470
471         /* Don't bother allocating more MSI-X vectors than cpus */
472         msi_count = min(dev->max_msix,
473                 (unsigned int)num_online_cpus());
474
475         dev->max_msix = msi_count;
476
477         if (msi_count > AAC_MAX_MSIX)
478                 msi_count = AAC_MAX_MSIX;
479
480         if (msi_count > 1 &&
481             pci_find_capability(dev->pdev, PCI_CAP_ID_MSIX)) {
482                 min_msix = 2;
483                 i = pci_alloc_irq_vectors(dev->pdev,
484                                           min_msix, msi_count,
485                                           PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
486                 if (i > 0) {
487                         dev->msi_enabled = 1;
488                         msi_count = i;
489                 } else {
490                         dev->msi_enabled = 0;
491                         dev_err(&dev->pdev->dev,
492                         "MSIX not supported!! Will try INTX 0x%x.\n", i);
493                 }
494         }
495
496         if (!dev->msi_enabled)
497                 dev->max_msix = msi_count = 1;
498         else {
499                 if (dev->max_msix > msi_count)
500                         dev->max_msix = msi_count;
501         }
502         if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 && dev->sa_firmware)
503                 dev->vector_cap = dev->scsi_host_ptr->can_queue +
504                                 AAC_NUM_MGT_FIB;
505         else
506                 dev->vector_cap = (dev->scsi_host_ptr->can_queue +
507                                 AAC_NUM_MGT_FIB) / msi_count;
508
509 }
510 struct aac_dev *aac_init_adapter(struct aac_dev *dev)
511 {
512         u32 status[5];
513         struct Scsi_Host * host = dev->scsi_host_ptr;
514         extern int aac_sync_mode;
515
516         /*
517          *      Check the preferred comm settings, defaults from template.
518          */
519         dev->management_fib_count = 0;
520         spin_lock_init(&dev->manage_lock);
521         spin_lock_init(&dev->sync_lock);
522         spin_lock_init(&dev->iq_lock);
523         dev->max_fib_size = sizeof(struct hw_fib);
524         dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size
525                 - sizeof(struct aac_fibhdr)
526                 - sizeof(struct aac_write) + sizeof(struct sgentry))
527                         / sizeof(struct sgentry);
528         dev->comm_interface = AAC_COMM_PRODUCER;
529         dev->raw_io_interface = dev->raw_io_64 = 0;
530
531
532         /*
533          * Enable INTX mode, if not done already Enabled
534          */
535         if (aac_is_msix_mode(dev)) {
536                 aac_change_to_intx(dev);
537                 dev_info(&dev->pdev->dev, "Changed firmware to INTX mode");
538         }
539
540         if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
541                 0, 0, 0, 0, 0, 0,
542                 status+0, status+1, status+2, status+3, status+4)) &&
543                 (status[0] == 0x00000001)) {
544                 dev->doorbell_mask = status[3];
545                 if (status[1] & AAC_OPT_NEW_COMM_64)
546                         dev->raw_io_64 = 1;
547                 dev->sync_mode = aac_sync_mode;
548                 if (dev->a_ops.adapter_comm &&
549                     (status[1] & AAC_OPT_NEW_COMM)) {
550                         dev->comm_interface = AAC_COMM_MESSAGE;
551                         dev->raw_io_interface = 1;
552                         if ((status[1] & AAC_OPT_NEW_COMM_TYPE1)) {
553                                 /* driver supports TYPE1 (Tupelo) */
554                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE1;
555                         } else if (status[1] & AAC_OPT_NEW_COMM_TYPE2) {
556                                 /* driver supports TYPE2 (Denali, Yosemite) */
557                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
558                         } else if (status[1] & AAC_OPT_NEW_COMM_TYPE3) {
559                                 /* driver supports TYPE3 (Yosemite, Thor) */
560                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE3;
561                         } else if (status[1] & AAC_OPT_NEW_COMM_TYPE4) {
562                                 /* not supported TYPE - switch to sync. mode */
563                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
564                                 dev->sync_mode = 1;
565                         }
566                 }
567                 if ((status[1] & le32_to_cpu(AAC_OPT_EXTENDED)) &&
568                         (status[4] & le32_to_cpu(AAC_EXTOPT_SA_FIRMWARE)))
569                         dev->sa_firmware = 1;
570                 else
571                         dev->sa_firmware = 0;
572
573                 if (status[4] & le32_to_cpu(AAC_EXTOPT_SOFT_RESET))
574                         dev->soft_reset_support = 1;
575                 else
576                         dev->soft_reset_support = 0;
577
578                 if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
579                     (status[2] > dev->base_size)) {
580                         aac_adapter_ioremap(dev, 0);
581                         dev->base_size = status[2];
582                         if (aac_adapter_ioremap(dev, status[2])) {
583                                 /* remap failed, go back ... */
584                                 dev->comm_interface = AAC_COMM_PRODUCER;
585                                 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) {
586                                         printk(KERN_WARNING
587                                           "aacraid: unable to map adapter.\n");
588                                         return NULL;
589                                 }
590                         }
591                 }
592         }
593         dev->max_msix = 0;
594         dev->msi_enabled = 0;
595         dev->adapter_shutdown = 0;
596         if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS,
597           0, 0, 0, 0, 0, 0,
598           status+0, status+1, status+2, status+3, status+4))
599          && (status[0] == 0x00000001)) {
600                 /*
601                  *      status[1] >> 16         maximum command size in KB
602                  *      status[1] & 0xFFFF      maximum FIB size
603                  *      status[2] >> 16         maximum SG elements to driver
604                  *      status[2] & 0xFFFF      maximum SG elements from driver
605                  *      status[3] & 0xFFFF      maximum number FIBs outstanding
606                  */
607                 host->max_sectors = (status[1] >> 16) << 1;
608                 /* Multiple of 32 for PMC */
609                 dev->max_fib_size = status[1] & 0xFFE0;
610                 host->sg_tablesize = status[2] >> 16;
611                 dev->sg_tablesize = status[2] & 0xFFFF;
612                 if (aac_is_src(dev)) {
613                         if (host->can_queue > (status[3] >> 16) -
614                                         AAC_NUM_MGT_FIB)
615                                 host->can_queue = (status[3] >> 16) -
616                                         AAC_NUM_MGT_FIB;
617                 } else if (host->can_queue > (status[3] & 0xFFFF) -
618                                 AAC_NUM_MGT_FIB)
619                         host->can_queue = (status[3] & 0xFFFF) -
620                                 AAC_NUM_MGT_FIB;
621
622                 dev->max_num_aif = status[4] & 0xFFFF;
623         }
624         if (numacb > 0) {
625                 if (numacb < host->can_queue)
626                         host->can_queue = numacb;
627                 else
628                         pr_warn("numacb=%d ignored\n", numacb);
629         }
630
631         if (aac_is_src(dev))
632                 aac_define_int_mode(dev);
633         /*
634          *      Ok now init the communication subsystem
635          */
636
637         dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL);
638         if (dev->queues == NULL) {
639                 printk(KERN_ERR "Error could not allocate comm region.\n");
640                 return NULL;
641         }
642
643         if (aac_comm_init(dev)<0){
644                 kfree(dev->queues);
645                 return NULL;
646         }
647         /*
648          *      Initialize the list of fibs
649          */
650         if (aac_fib_setup(dev) < 0) {
651                 kfree(dev->queues);
652                 return NULL;
653         }
654                 
655         INIT_LIST_HEAD(&dev->fib_list);
656         INIT_LIST_HEAD(&dev->sync_fib_list);
657
658         return dev;
659 }
660