1 /*
2 * Adaptec AAC series RAID controller driver
3 * (c) Copyright 2001 Red Hat Inc.
4 *
5 * based on the old aacraid driver that is..
6 * Adaptec aacraid device driver for Linux.
7 *
8 * Copyright (c) 2000-2010 Adaptec, Inc.
9 * 2010 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2, or (at your option)
14 * any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; see the file COPYING. If not, write to
23 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
24 *
25 * Module Name:
26 * comminit.c
27 *
28 * Abstract: This supports the initialization of the host adapter commuication interface.
29 * This is a platform dependent module for the pci cyclone board.
30 *
31 */
32
33 #include <linux/kernel.h>
34 #include <linux/init.h>
35 #include <linux/types.h>
36 #include <linux/pci.h>
37 #include <linux/spinlock.h>
38 #include <linux/slab.h>
39 #include <linux/blkdev.h>
40 #include <linux/delay.h>
41 #include <linux/completion.h>
42 #include <linux/mm.h>
43 #include <scsi/scsi_host.h>
44
45 #include "aacraid.h"
46
47 struct aac_common aac_config = {
48 .irq_mod = 1
49 };
50
aac_is_msix_mode(struct aac_dev * dev)51 static inline int aac_is_msix_mode(struct aac_dev *dev)
52 {
53 u32 status;
54
55 status = src_readl(dev, MUnit.OMR);
56 return (status & AAC_INT_MODE_MSIX);
57 }
58
aac_change_to_intx(struct aac_dev * dev)59 static inline void aac_change_to_intx(struct aac_dev *dev)
60 {
61 aac_src_access_devreg(dev, AAC_DISABLE_MSIX);
62 aac_src_access_devreg(dev, AAC_ENABLE_INTX);
63 }
64
aac_alloc_comm(struct aac_dev * dev,void ** commaddr,unsigned long commsize,unsigned long commalign)65 static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign)
66 {
67 unsigned char *base;
68 unsigned long size, align;
69 const unsigned long fibsize = dev->max_fib_size;
70 const unsigned long printfbufsiz = 256;
71 unsigned long host_rrq_size = 0;
72 struct aac_init *init;
73 dma_addr_t phys;
74 unsigned long aac_max_hostphysmempages;
75
76 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 ||
77 dev->comm_interface == AAC_COMM_MESSAGE_TYPE2)
78 host_rrq_size = (dev->scsi_host_ptr->can_queue
79 + AAC_NUM_MGT_FIB) * sizeof(u32);
80 size = fibsize + sizeof(struct aac_init) + commsize +
81 commalign + printfbufsiz + host_rrq_size;
82
83 base = pci_alloc_consistent(dev->pdev, size, &phys);
84
85 if(base == NULL)
86 {
87 printk(KERN_ERR "aacraid: unable to create mapping.\n");
88 return 0;
89 }
90 dev->comm_addr = (void *)base;
91 dev->comm_phys = phys;
92 dev->comm_size = size;
93
94 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 ||
95 dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
96 dev->host_rrq = (u32 *)(base + fibsize);
97 dev->host_rrq_pa = phys + fibsize;
98 memset(dev->host_rrq, 0, host_rrq_size);
99 }
100
101 dev->init = (struct aac_init *)(base + fibsize + host_rrq_size);
102 dev->init_pa = phys + fibsize + host_rrq_size;
103
104 init = dev->init;
105
106 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION);
107 if (dev->max_fib_size != sizeof(struct hw_fib))
108 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4);
109 init->Sa_MSIXVectors = cpu_to_le32(Sa_MINIPORT_REVISION);
110 init->fsrev = cpu_to_le32(dev->fsrev);
111
112 /*
113 * Adapter Fibs are the first thing allocated so that they
114 * start page aligned
115 */
116 dev->aif_base_va = (struct hw_fib *)base;
117
118 init->AdapterFibsVirtualAddress = 0;
119 init->AdapterFibsPhysicalAddress = cpu_to_le32((u32)phys);
120 init->AdapterFibsSize = cpu_to_le32(fibsize);
121 init->AdapterFibAlign = cpu_to_le32(sizeof(struct hw_fib));
122 /*
123 * number of 4k pages of host physical memory. The aacraid fw needs
124 * this number to be less than 4gb worth of pages. New firmware doesn't
125 * have any issues with the mapping system, but older Firmware did, and
126 * had *troubles* dealing with the math overloading past 32 bits, thus
127 * we must limit this field.
128 */
129 aac_max_hostphysmempages = dma_get_required_mask(&dev->pdev->dev) >> 12;
130 if (aac_max_hostphysmempages < AAC_MAX_HOSTPHYSMEMPAGES)
131 init->HostPhysMemPages = cpu_to_le32(aac_max_hostphysmempages);
132 else
133 init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES);
134
135 init->InitFlags = cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME |
136 INITFLAGS_DRIVER_SUPPORTS_PM);
137 init->MaxIoCommands = cpu_to_le32(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
138 init->MaxIoSize = cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
139 init->MaxFibSize = cpu_to_le32(dev->max_fib_size);
140 init->MaxNumAif = cpu_to_le32(dev->max_num_aif);
141
142 if (dev->comm_interface == AAC_COMM_MESSAGE) {
143 init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED);
144 dprintk((KERN_WARNING"aacraid: New Comm Interface enabled\n"));
145 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) {
146 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_6);
147 init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
148 INITFLAGS_NEW_COMM_TYPE1_SUPPORTED | INITFLAGS_FAST_JBOD_SUPPORTED);
149 init->HostRRQ_AddrHigh = cpu_to_le32((u32)((u64)dev->host_rrq_pa >> 32));
150 init->HostRRQ_AddrLow = cpu_to_le32((u32)(dev->host_rrq_pa & 0xffffffff));
151 dprintk((KERN_WARNING"aacraid: New Comm Interface type1 enabled\n"));
152 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
153 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_7);
154 init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
155 INITFLAGS_NEW_COMM_TYPE2_SUPPORTED | INITFLAGS_FAST_JBOD_SUPPORTED);
156 init->HostRRQ_AddrHigh = cpu_to_le32((u32)((u64)dev->host_rrq_pa >> 32));
157 init->HostRRQ_AddrLow = cpu_to_le32((u32)(dev->host_rrq_pa & 0xffffffff));
158 /* number of MSI-X */
159 init->Sa_MSIXVectors = cpu_to_le32(dev->max_msix);
160 dprintk((KERN_WARNING"aacraid: New Comm Interface type2 enabled\n"));
161 }
162
163 /*
164 * Increment the base address by the amount already used
165 */
166 base = base + fibsize + host_rrq_size + sizeof(struct aac_init);
167 phys = (dma_addr_t)((ulong)phys + fibsize + host_rrq_size +
168 sizeof(struct aac_init));
169
170 /*
171 * Align the beginning of Headers to commalign
172 */
173 align = (commalign - ((uintptr_t)(base) & (commalign - 1)));
174 base = base + align;
175 phys = phys + align;
176 /*
177 * Fill in addresses of the Comm Area Headers and Queues
178 */
179 *commaddr = base;
180 init->CommHeaderAddress = cpu_to_le32((u32)phys);
181 /*
182 * Increment the base address by the size of the CommArea
183 */
184 base = base + commsize;
185 phys = phys + commsize;
186 /*
187 * Place the Printf buffer area after the Fast I/O comm area.
188 */
189 dev->printfbuf = (void *)base;
190 init->printfbuf = cpu_to_le32(phys);
191 init->printfbufsiz = cpu_to_le32(printfbufsiz);
192 memset(base, 0, printfbufsiz);
193 return 1;
194 }
195
aac_queue_init(struct aac_dev * dev,struct aac_queue * q,u32 * mem,int qsize)196 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize)
197 {
198 atomic_set(&q->numpending, 0);
199 q->dev = dev;
200 init_waitqueue_head(&q->cmdready);
201 INIT_LIST_HEAD(&q->cmdq);
202 init_waitqueue_head(&q->qfull);
203 spin_lock_init(&q->lockdata);
204 q->lock = &q->lockdata;
205 q->headers.producer = (__le32 *)mem;
206 q->headers.consumer = (__le32 *)(mem+1);
207 *(q->headers.producer) = cpu_to_le32(qsize);
208 *(q->headers.consumer) = cpu_to_le32(qsize);
209 q->entries = qsize;
210 }
211
212 /**
213 * aac_send_shutdown - shutdown an adapter
214 * @dev: Adapter to shutdown
215 *
216 * This routine will send a VM_CloseAll (shutdown) request to the adapter.
217 */
218
aac_send_shutdown(struct aac_dev * dev)219 int aac_send_shutdown(struct aac_dev * dev)
220 {
221 struct fib * fibctx;
222 struct aac_close *cmd;
223 int status;
224
225 fibctx = aac_fib_alloc(dev);
226 if (!fibctx)
227 return -ENOMEM;
228 aac_fib_init(fibctx);
229
230 cmd = (struct aac_close *) fib_data(fibctx);
231
232 cmd->command = cpu_to_le32(VM_CloseAll);
233 cmd->cid = cpu_to_le32(0xfffffffe);
234
235 status = aac_fib_send(ContainerCommand,
236 fibctx,
237 sizeof(struct aac_close),
238 FsaNormal,
239 -2 /* Timeout silently */, 1,
240 NULL, NULL);
241
242 if (status >= 0)
243 aac_fib_complete(fibctx);
244 /* FIB should be freed only after getting the response from the F/W */
245 if (status != -ERESTARTSYS)
246 aac_fib_free(fibctx);
247 dev->adapter_shutdown = 1;
248 if ((dev->pdev->device == PMC_DEVICE_S7 ||
249 dev->pdev->device == PMC_DEVICE_S8 ||
250 dev->pdev->device == PMC_DEVICE_S9) &&
251 dev->msi_enabled)
252 aac_src_access_devreg(dev, AAC_ENABLE_INTX);
253 return status;
254 }
255
256 /**
257 * aac_comm_init - Initialise FSA data structures
258 * @dev: Adapter to initialise
259 *
260 * Initializes the data structures that are required for the FSA commuication
261 * interface to operate.
262 * Returns
263 * 1 - if we were able to init the commuication interface.
264 * 0 - If there were errors initing. This is a fatal error.
265 */
266
aac_comm_init(struct aac_dev * dev)267 static int aac_comm_init(struct aac_dev * dev)
268 {
269 unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2;
270 unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES;
271 u32 *headers;
272 struct aac_entry * queues;
273 unsigned long size;
274 struct aac_queue_block * comm = dev->queues;
275 /*
276 * Now allocate and initialize the zone structures used as our
277 * pool of FIB context records. The size of the zone is based
278 * on the system memory size. We also initialize the mutex used
279 * to protect the zone.
280 */
281 spin_lock_init(&dev->fib_lock);
282
283 /*
284 * Allocate the physically contiguous space for the commuication
285 * queue headers.
286 */
287
288 size = hdrsize + queuesize;
289
290 if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT))
291 return -ENOMEM;
292
293 queues = (struct aac_entry *)(((ulong)headers) + hdrsize);
294
295 /* Adapter to Host normal priority Command queue */
296 comm->queue[HostNormCmdQueue].base = queues;
297 aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES);
298 queues += HOST_NORM_CMD_ENTRIES;
299 headers += 2;
300
301 /* Adapter to Host high priority command queue */
302 comm->queue[HostHighCmdQueue].base = queues;
303 aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES);
304
305 queues += HOST_HIGH_CMD_ENTRIES;
306 headers +=2;
307
308 /* Host to adapter normal priority command queue */
309 comm->queue[AdapNormCmdQueue].base = queues;
310 aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES);
311
312 queues += ADAP_NORM_CMD_ENTRIES;
313 headers += 2;
314
315 /* host to adapter high priority command queue */
316 comm->queue[AdapHighCmdQueue].base = queues;
317 aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES);
318
319 queues += ADAP_HIGH_CMD_ENTRIES;
320 headers += 2;
321
322 /* adapter to host normal priority response queue */
323 comm->queue[HostNormRespQueue].base = queues;
324 aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES);
325 queues += HOST_NORM_RESP_ENTRIES;
326 headers += 2;
327
328 /* adapter to host high priority response queue */
329 comm->queue[HostHighRespQueue].base = queues;
330 aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES);
331
332 queues += HOST_HIGH_RESP_ENTRIES;
333 headers += 2;
334
335 /* host to adapter normal priority response queue */
336 comm->queue[AdapNormRespQueue].base = queues;
337 aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES);
338
339 queues += ADAP_NORM_RESP_ENTRIES;
340 headers += 2;
341
342 /* host to adapter high priority response queue */
343 comm->queue[AdapHighRespQueue].base = queues;
344 aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES);
345
346 comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock;
347 comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock;
348 comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock;
349 comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock;
350
351 return 0;
352 }
353
aac_define_int_mode(struct aac_dev * dev)354 void aac_define_int_mode(struct aac_dev *dev)
355 {
356 int i, msi_count, min_msix;
357
358 msi_count = i = 0;
359 /* max. vectors from GET_COMM_PREFERRED_SETTINGS */
360 if (dev->max_msix == 0 ||
361 dev->pdev->device == PMC_DEVICE_S6 ||
362 dev->sync_mode) {
363 dev->max_msix = 1;
364 dev->vector_cap =
365 dev->scsi_host_ptr->can_queue +
366 AAC_NUM_MGT_FIB;
367 return;
368 }
369
370 /* Don't bother allocating more MSI-X vectors than cpus */
371 msi_count = min(dev->max_msix,
372 (unsigned int)num_online_cpus());
373
374 dev->max_msix = msi_count;
375
376 if (msi_count > AAC_MAX_MSIX)
377 msi_count = AAC_MAX_MSIX;
378
379 for (i = 0; i < msi_count; i++)
380 dev->msixentry[i].entry = i;
381
382 if (msi_count > 1 &&
383 pci_find_capability(dev->pdev, PCI_CAP_ID_MSIX)) {
384 min_msix = 2;
385 i = pci_enable_msix_range(dev->pdev,
386 dev->msixentry,
387 min_msix,
388 msi_count);
389 if (i > 0) {
390 dev->msi_enabled = 1;
391 msi_count = i;
392 } else {
393 dev->msi_enabled = 0;
394 printk(KERN_ERR "%s%d: MSIX not supported!! Will try MSI 0x%x.\n",
395 dev->name, dev->id, i);
396 }
397 }
398
399 if (!dev->msi_enabled) {
400 msi_count = 1;
401 i = pci_enable_msi(dev->pdev);
402
403 if (!i) {
404 dev->msi_enabled = 1;
405 dev->msi = 1;
406 } else {
407 printk(KERN_ERR "%s%d: MSI not supported!! Will try INTx 0x%x.\n",
408 dev->name, dev->id, i);
409 }
410 }
411
412 if (!dev->msi_enabled)
413 dev->max_msix = msi_count = 1;
414 else {
415 if (dev->max_msix > msi_count)
416 dev->max_msix = msi_count;
417 }
418 dev->vector_cap =
419 (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) /
420 msi_count;
421 }
aac_init_adapter(struct aac_dev * dev)422 struct aac_dev *aac_init_adapter(struct aac_dev *dev)
423 {
424 u32 status[5];
425 struct Scsi_Host * host = dev->scsi_host_ptr;
426 extern int aac_sync_mode;
427
428 /*
429 * Check the preferred comm settings, defaults from template.
430 */
431 dev->management_fib_count = 0;
432 spin_lock_init(&dev->manage_lock);
433 spin_lock_init(&dev->sync_lock);
434 spin_lock_init(&dev->iq_lock);
435 dev->max_fib_size = sizeof(struct hw_fib);
436 dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size
437 - sizeof(struct aac_fibhdr)
438 - sizeof(struct aac_write) + sizeof(struct sgentry))
439 / sizeof(struct sgentry);
440 dev->comm_interface = AAC_COMM_PRODUCER;
441 dev->raw_io_interface = dev->raw_io_64 = 0;
442
443
444 /*
445 * Enable INTX mode, if not done already Enabled
446 */
447 if (aac_is_msix_mode(dev)) {
448 aac_change_to_intx(dev);
449 dev_info(&dev->pdev->dev, "Changed firmware to INTX mode");
450 }
451
452 if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
453 0, 0, 0, 0, 0, 0,
454 status+0, status+1, status+2, status+3, NULL)) &&
455 (status[0] == 0x00000001)) {
456 dev->doorbell_mask = status[3];
457 if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_64))
458 dev->raw_io_64 = 1;
459 dev->sync_mode = aac_sync_mode;
460 if (dev->a_ops.adapter_comm &&
461 (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM))) {
462 dev->comm_interface = AAC_COMM_MESSAGE;
463 dev->raw_io_interface = 1;
464 if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE1))) {
465 /* driver supports TYPE1 (Tupelo) */
466 dev->comm_interface = AAC_COMM_MESSAGE_TYPE1;
467 } else if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE2))) {
468 /* driver supports TYPE2 (Denali) */
469 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
470 } else if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE4)) ||
471 (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE3))) {
472 /* driver doesn't TYPE3 and TYPE4 */
473 /* switch to sync. mode */
474 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
475 dev->sync_mode = 1;
476 }
477 }
478 if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
479 (status[2] > dev->base_size)) {
480 aac_adapter_ioremap(dev, 0);
481 dev->base_size = status[2];
482 if (aac_adapter_ioremap(dev, status[2])) {
483 /* remap failed, go back ... */
484 dev->comm_interface = AAC_COMM_PRODUCER;
485 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) {
486 printk(KERN_WARNING
487 "aacraid: unable to map adapter.\n");
488 return NULL;
489 }
490 }
491 }
492 }
493 dev->max_msix = 0;
494 dev->msi_enabled = 0;
495 dev->adapter_shutdown = 0;
496 if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS,
497 0, 0, 0, 0, 0, 0,
498 status+0, status+1, status+2, status+3, status+4))
499 && (status[0] == 0x00000001)) {
500 /*
501 * status[1] >> 16 maximum command size in KB
502 * status[1] & 0xFFFF maximum FIB size
503 * status[2] >> 16 maximum SG elements to driver
504 * status[2] & 0xFFFF maximum SG elements from driver
505 * status[3] & 0xFFFF maximum number FIBs outstanding
506 */
507 host->max_sectors = (status[1] >> 16) << 1;
508 /* Multiple of 32 for PMC */
509 dev->max_fib_size = status[1] & 0xFFE0;
510 host->sg_tablesize = status[2] >> 16;
511 dev->sg_tablesize = status[2] & 0xFFFF;
512 if (dev->pdev->device == PMC_DEVICE_S7 ||
513 dev->pdev->device == PMC_DEVICE_S8 ||
514 dev->pdev->device == PMC_DEVICE_S9)
515 host->can_queue = ((status[3] >> 16) ? (status[3] >> 16) :
516 (status[3] & 0xFFFF)) - AAC_NUM_MGT_FIB;
517 else
518 host->can_queue = (status[3] & 0xFFFF) - AAC_NUM_MGT_FIB;
519 dev->max_num_aif = status[4] & 0xFFFF;
520 /*
521 * NOTE:
522 * All these overrides are based on a fixed internal
523 * knowledge and understanding of existing adapters,
524 * acbsize should be set with caution.
525 */
526 if (acbsize == 512) {
527 host->max_sectors = AAC_MAX_32BIT_SGBCOUNT;
528 dev->max_fib_size = 512;
529 dev->sg_tablesize = host->sg_tablesize
530 = (512 - sizeof(struct aac_fibhdr)
531 - sizeof(struct aac_write) + sizeof(struct sgentry))
532 / sizeof(struct sgentry);
533 host->can_queue = AAC_NUM_IO_FIB;
534 } else if (acbsize == 2048) {
535 host->max_sectors = 512;
536 dev->max_fib_size = 2048;
537 host->sg_tablesize = 65;
538 dev->sg_tablesize = 81;
539 host->can_queue = 512 - AAC_NUM_MGT_FIB;
540 } else if (acbsize == 4096) {
541 host->max_sectors = 1024;
542 dev->max_fib_size = 4096;
543 host->sg_tablesize = 129;
544 dev->sg_tablesize = 166;
545 host->can_queue = 256 - AAC_NUM_MGT_FIB;
546 } else if (acbsize == 8192) {
547 host->max_sectors = 2048;
548 dev->max_fib_size = 8192;
549 host->sg_tablesize = 257;
550 dev->sg_tablesize = 337;
551 host->can_queue = 128 - AAC_NUM_MGT_FIB;
552 } else if (acbsize > 0) {
553 printk("Illegal acbsize=%d ignored\n", acbsize);
554 }
555 }
556 {
557
558 if (numacb > 0) {
559 if (numacb < host->can_queue)
560 host->can_queue = numacb;
561 else
562 printk("numacb=%d ignored\n", numacb);
563 }
564 }
565
566 if (host->can_queue > AAC_NUM_IO_FIB)
567 host->can_queue = AAC_NUM_IO_FIB;
568
569 if (dev->pdev->device == PMC_DEVICE_S6 ||
570 dev->pdev->device == PMC_DEVICE_S7 ||
571 dev->pdev->device == PMC_DEVICE_S8 ||
572 dev->pdev->device == PMC_DEVICE_S9)
573 aac_define_int_mode(dev);
574 /*
575 * Ok now init the communication subsystem
576 */
577
578 dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL);
579 if (dev->queues == NULL) {
580 printk(KERN_ERR "Error could not allocate comm region.\n");
581 return NULL;
582 }
583
584 if (aac_comm_init(dev)<0){
585 kfree(dev->queues);
586 return NULL;
587 }
588 /*
589 * Initialize the list of fibs
590 */
591 if (aac_fib_setup(dev) < 0) {
592 kfree(dev->queues);
593 return NULL;
594 }
595
596 INIT_LIST_HEAD(&dev->fib_list);
597 INIT_LIST_HEAD(&dev->sync_fib_list);
598
599 return dev;
600 }
601
602