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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. ([email protected])
11 * 2016-2017 Microsemi Corp. ([email protected])
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
36struct aac_common aac_config = {
37 .irq_mod = 1
38};
39
40static 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
49static 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
55static 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
259static 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
275static bool wait_for_io_iter(struct scsi_cmnd *cmd, void *data)
276{
277 int *active = data;
278
279 if (aac_priv(cmd)->owner == AAC_OWNER_FIRMWARE)
280 *active = *active + 1;
281 return true;
282}
283static 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
313int 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
368static 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
455void 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, PCI_IRQ_MSIX);
485 if (i > 0) {
486 dev->msi_enabled = 1;
487 msi_count = i;
488 } else {
489 dev->msi_enabled = 0;
490 dev_err(&dev->pdev->dev,
491 "MSIX not supported!! Will try INTX 0x%x.\n", i);
492 }
493 }
494
495 if (!dev->msi_enabled)
496 dev->max_msix = msi_count = 1;
497 else {
498 if (dev->max_msix > msi_count)
499 dev->max_msix = msi_count;
500 }
501 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 && dev->sa_firmware)
502 dev->vector_cap = dev->scsi_host_ptr->can_queue +
503 AAC_NUM_MGT_FIB;
504 else
505 dev->vector_cap = (dev->scsi_host_ptr->can_queue +
506 AAC_NUM_MGT_FIB) / msi_count;
507
508}
509struct aac_dev *aac_init_adapter(struct aac_dev *dev)
510{
511 u32 status[5];
512 struct Scsi_Host * host = dev->scsi_host_ptr;
513 extern int aac_sync_mode;
514
515 /*
516 * Check the preferred comm settings, defaults from template.
517 */
518 dev->management_fib_count = 0;
519 spin_lock_init(&dev->manage_lock);
520 spin_lock_init(&dev->sync_lock);
521 spin_lock_init(&dev->iq_lock);
522 dev->max_fib_size = sizeof(struct hw_fib);
523 dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size
524 - sizeof(struct aac_fibhdr) - sizeof(struct aac_write))
525 / sizeof(struct sgentry);
526 dev->comm_interface = AAC_COMM_PRODUCER;
527 dev->raw_io_interface = dev->raw_io_64 = 0;
528
529
530 /*
531 * Enable INTX mode, if not done already Enabled
532 */
533 if (aac_is_msix_mode(dev)) {
534 aac_change_to_intx(dev);
535 dev_info(&dev->pdev->dev, "Changed firmware to INTX mode");
536 }
537
538 if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
539 0, 0, 0, 0, 0, 0,
540 status+0, status+1, status+2, status+3, status+4)) &&
541 (status[0] == 0x00000001)) {
542 dev->doorbell_mask = status[3];
543 if (status[1] & AAC_OPT_NEW_COMM_64)
544 dev->raw_io_64 = 1;
545 dev->sync_mode = aac_sync_mode;
546 if (dev->a_ops.adapter_comm &&
547 (status[1] & AAC_OPT_NEW_COMM)) {
548 dev->comm_interface = AAC_COMM_MESSAGE;
549 dev->raw_io_interface = 1;
550 if ((status[1] & AAC_OPT_NEW_COMM_TYPE1)) {
551 /* driver supports TYPE1 (Tupelo) */
552 dev->comm_interface = AAC_COMM_MESSAGE_TYPE1;
553 } else if (status[1] & AAC_OPT_NEW_COMM_TYPE2) {
554 /* driver supports TYPE2 (Denali, Yosemite) */
555 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
556 } else if (status[1] & AAC_OPT_NEW_COMM_TYPE3) {
557 /* driver supports TYPE3 (Yosemite, Thor) */
558 dev->comm_interface = AAC_COMM_MESSAGE_TYPE3;
559 } else if (status[1] & AAC_OPT_NEW_COMM_TYPE4) {
560 /* not supported TYPE - switch to sync. mode */
561 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
562 dev->sync_mode = 1;
563 }
564 }
565 if ((status[1] & le32_to_cpu(AAC_OPT_EXTENDED)) &&
566 (status[4] & le32_to_cpu(AAC_EXTOPT_SA_FIRMWARE)))
567 dev->sa_firmware = 1;
568 else
569 dev->sa_firmware = 0;
570
571 if (status[4] & le32_to_cpu(AAC_EXTOPT_SOFT_RESET))
572 dev->soft_reset_support = 1;
573 else
574 dev->soft_reset_support = 0;
575
576 if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
577 (status[2] > dev->base_size)) {
578 aac_adapter_ioremap(dev, 0);
579 dev->base_size = status[2];
580 if (aac_adapter_ioremap(dev, status[2])) {
581 /* remap failed, go back ... */
582 dev->comm_interface = AAC_COMM_PRODUCER;
583 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) {
584 printk(KERN_WARNING
585 "aacraid: unable to map adapter.\n");
586 return NULL;
587 }
588 }
589 }
590 }
591 dev->max_msix = 0;
592 dev->msi_enabled = 0;
593 dev->adapter_shutdown = 0;
594 if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS,
595 0, 0, 0, 0, 0, 0,
596 status+0, status+1, status+2, status+3, status+4))
597 && (status[0] == 0x00000001)) {
598 /*
599 * status[1] >> 16 maximum command size in KB
600 * status[1] & 0xFFFF maximum FIB size
601 * status[2] >> 16 maximum SG elements to driver
602 * status[2] & 0xFFFF maximum SG elements from driver
603 * status[3] & 0xFFFF maximum number FIBs outstanding
604 */
605 host->max_sectors = (status[1] >> 16) << 1;
606 /* Multiple of 32 for PMC */
607 dev->max_fib_size = status[1] & 0xFFE0;
608 host->sg_tablesize = status[2] >> 16;
609 dev->sg_tablesize = status[2] & 0xFFFF;
610 if (aac_is_src(dev)) {
611 if (host->can_queue > (status[3] >> 16) -
612 AAC_NUM_MGT_FIB)
613 host->can_queue = (status[3] >> 16) -
614 AAC_NUM_MGT_FIB;
615 } else if (host->can_queue > (status[3] & 0xFFFF) -
616 AAC_NUM_MGT_FIB)
617 host->can_queue = (status[3] & 0xFFFF) -
618 AAC_NUM_MGT_FIB;
619
620 dev->max_num_aif = status[4] & 0xFFFF;
621 }
622 if (numacb > 0) {
623 if (numacb < host->can_queue)
624 host->can_queue = numacb;
625 else
626 pr_warn("numacb=%d ignored\n", numacb);
627 }
628
629 if (aac_is_src(dev))
630 aac_define_int_mode(dev);
631 /*
632 * Ok now init the communication subsystem
633 */
634
635 dev->queues = kzalloc_obj(struct aac_queue_block);
636 if (dev->queues == NULL) {
637 printk(KERN_ERR "Error could not allocate comm region.\n");
638 return NULL;
639 }
640
641 if (aac_comm_init(dev)<0){
642 kfree(dev->queues);
643 dev->queues = NULL;
644 return NULL;
645 }
646 /*
647 * Initialize the list of fibs
648 */
649 if (aac_fib_setup(dev) < 0) {
650 kfree(dev->queues);
651 dev->queues = NULL;
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