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 * src.c
27 *
28 * Abstract: Hardware Device Interface for PMC SRC based controllers
29 *
30 */
31
32 #include <linux/kernel.h>
33 #include <linux/init.h>
34 #include <linux/types.h>
35 #include <linux/pci.h>
36 #include <linux/spinlock.h>
37 #include <linux/slab.h>
38 #include <linux/blkdev.h>
39 #include <linux/delay.h>
40 #include <linux/completion.h>
41 #include <linux/time.h>
42 #include <linux/interrupt.h>
43 #include <scsi/scsi_host.h>
44
45 #include "aacraid.h"
46
47 static int aac_src_get_sync_status(struct aac_dev *dev);
48
aac_src_intr_message(int irq,void * dev_id)49 irqreturn_t aac_src_intr_message(int irq, void *dev_id)
50 {
51 struct aac_msix_ctx *ctx;
52 struct aac_dev *dev;
53 unsigned long bellbits, bellbits_shifted;
54 int vector_no;
55 int isFastResponse, mode;
56 u32 index, handle;
57
58 ctx = (struct aac_msix_ctx *)dev_id;
59 dev = ctx->dev;
60 vector_no = ctx->vector_no;
61
62 if (dev->msi_enabled) {
63 mode = AAC_INT_MODE_MSI;
64 if (vector_no == 0) {
65 bellbits = src_readl(dev, MUnit.ODR_MSI);
66 if (bellbits & 0x40000)
67 mode |= AAC_INT_MODE_AIF;
68 if (bellbits & 0x1000)
69 mode |= AAC_INT_MODE_SYNC;
70 }
71 } else {
72 mode = AAC_INT_MODE_INTX;
73 bellbits = src_readl(dev, MUnit.ODR_R);
74 if (bellbits & PmDoorBellResponseSent) {
75 bellbits = PmDoorBellResponseSent;
76 src_writel(dev, MUnit.ODR_C, bellbits);
77 src_readl(dev, MUnit.ODR_C);
78 } else {
79 bellbits_shifted = (bellbits >> SRC_ODR_SHIFT);
80 src_writel(dev, MUnit.ODR_C, bellbits);
81 src_readl(dev, MUnit.ODR_C);
82
83 if (bellbits_shifted & DoorBellAifPending)
84 mode |= AAC_INT_MODE_AIF;
85 else if (bellbits_shifted & OUTBOUNDDOORBELL_0)
86 mode |= AAC_INT_MODE_SYNC;
87 }
88 }
89
90 if (mode & AAC_INT_MODE_SYNC) {
91 unsigned long sflags;
92 struct list_head *entry;
93 int send_it = 0;
94 extern int aac_sync_mode;
95
96 if (!aac_sync_mode && !dev->msi_enabled) {
97 src_writel(dev, MUnit.ODR_C, bellbits);
98 src_readl(dev, MUnit.ODR_C);
99 }
100
101 if (dev->sync_fib) {
102 if (dev->sync_fib->callback)
103 dev->sync_fib->callback(dev->sync_fib->callback_data,
104 dev->sync_fib);
105 spin_lock_irqsave(&dev->sync_fib->event_lock, sflags);
106 if (dev->sync_fib->flags & FIB_CONTEXT_FLAG_WAIT) {
107 dev->management_fib_count--;
108 up(&dev->sync_fib->event_wait);
109 }
110 spin_unlock_irqrestore(&dev->sync_fib->event_lock,
111 sflags);
112 spin_lock_irqsave(&dev->sync_lock, sflags);
113 if (!list_empty(&dev->sync_fib_list)) {
114 entry = dev->sync_fib_list.next;
115 dev->sync_fib = list_entry(entry,
116 struct fib,
117 fiblink);
118 list_del(entry);
119 send_it = 1;
120 } else {
121 dev->sync_fib = NULL;
122 }
123 spin_unlock_irqrestore(&dev->sync_lock, sflags);
124 if (send_it) {
125 aac_adapter_sync_cmd(dev, SEND_SYNCHRONOUS_FIB,
126 (u32)dev->sync_fib->hw_fib_pa,
127 0, 0, 0, 0, 0,
128 NULL, NULL, NULL, NULL, NULL);
129 }
130 }
131 if (!dev->msi_enabled)
132 mode = 0;
133
134 }
135
136 if (mode & AAC_INT_MODE_AIF) {
137 /* handle AIF */
138 aac_intr_normal(dev, 0, 2, 0, NULL);
139 if (dev->msi_enabled)
140 aac_src_access_devreg(dev, AAC_CLEAR_AIF_BIT);
141 mode = 0;
142 }
143
144 if (mode) {
145 index = dev->host_rrq_idx[vector_no];
146
147 for (;;) {
148 isFastResponse = 0;
149 /* remove toggle bit (31) */
150 handle = (dev->host_rrq[index] & 0x7fffffff);
151 /* check fast response bit (30) */
152 if (handle & 0x40000000)
153 isFastResponse = 1;
154 handle &= 0x0000ffff;
155 if (handle == 0)
156 break;
157 if (dev->msi_enabled && dev->max_msix > 1)
158 atomic_dec(&dev->rrq_outstanding[vector_no]);
159 dev->host_rrq[index++] = 0;
160 aac_intr_normal(dev, handle-1, 0, isFastResponse, NULL);
161 if (index == (vector_no + 1) * dev->vector_cap)
162 index = vector_no * dev->vector_cap;
163 dev->host_rrq_idx[vector_no] = index;
164 }
165 mode = 0;
166 }
167
168 return IRQ_HANDLED;
169 }
170
171 /**
172 * aac_src_disable_interrupt - Disable interrupts
173 * @dev: Adapter
174 */
175
aac_src_disable_interrupt(struct aac_dev * dev)176 static void aac_src_disable_interrupt(struct aac_dev *dev)
177 {
178 src_writel(dev, MUnit.OIMR, dev->OIMR = 0xffffffff);
179 }
180
181 /**
182 * aac_src_enable_interrupt_message - Enable interrupts
183 * @dev: Adapter
184 */
185
aac_src_enable_interrupt_message(struct aac_dev * dev)186 static void aac_src_enable_interrupt_message(struct aac_dev *dev)
187 {
188 aac_src_access_devreg(dev, AAC_ENABLE_INTERRUPT);
189 }
190
191 /**
192 * src_sync_cmd - send a command and wait
193 * @dev: Adapter
194 * @command: Command to execute
195 * @p1: first parameter
196 * @ret: adapter status
197 *
198 * This routine will send a synchronous command to the adapter and wait
199 * for its completion.
200 */
201
src_sync_cmd(struct aac_dev * dev,u32 command,u32 p1,u32 p2,u32 p3,u32 p4,u32 p5,u32 p6,u32 * status,u32 * r1,u32 * r2,u32 * r3,u32 * r4)202 static int src_sync_cmd(struct aac_dev *dev, u32 command,
203 u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6,
204 u32 *status, u32 * r1, u32 * r2, u32 * r3, u32 * r4)
205 {
206 unsigned long start;
207 unsigned long delay;
208 int ok;
209
210 /*
211 * Write the command into Mailbox 0
212 */
213 writel(command, &dev->IndexRegs->Mailbox[0]);
214 /*
215 * Write the parameters into Mailboxes 1 - 6
216 */
217 writel(p1, &dev->IndexRegs->Mailbox[1]);
218 writel(p2, &dev->IndexRegs->Mailbox[2]);
219 writel(p3, &dev->IndexRegs->Mailbox[3]);
220 writel(p4, &dev->IndexRegs->Mailbox[4]);
221
222 /*
223 * Clear the synch command doorbell to start on a clean slate.
224 */
225 if (!dev->msi_enabled)
226 src_writel(dev,
227 MUnit.ODR_C,
228 OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT);
229
230 /*
231 * Disable doorbell interrupts
232 */
233 src_writel(dev, MUnit.OIMR, dev->OIMR = 0xffffffff);
234
235 /*
236 * Force the completion of the mask register write before issuing
237 * the interrupt.
238 */
239 src_readl(dev, MUnit.OIMR);
240
241 /*
242 * Signal that there is a new synch command
243 */
244 src_writel(dev, MUnit.IDR, INBOUNDDOORBELL_0 << SRC_IDR_SHIFT);
245
246 if (!dev->sync_mode || command != SEND_SYNCHRONOUS_FIB) {
247 ok = 0;
248 start = jiffies;
249
250 if (command == IOP_RESET_ALWAYS) {
251 /* Wait up to 10 sec */
252 delay = 10*HZ;
253 } else {
254 /* Wait up to 5 minutes */
255 delay = 300*HZ;
256 }
257 while (time_before(jiffies, start+delay)) {
258 udelay(5); /* Delay 5 microseconds to let Mon960 get info. */
259 /*
260 * Mon960 will set doorbell0 bit when it has completed the command.
261 */
262 if (aac_src_get_sync_status(dev) & OUTBOUNDDOORBELL_0) {
263 /*
264 * Clear the doorbell.
265 */
266 if (dev->msi_enabled)
267 aac_src_access_devreg(dev,
268 AAC_CLEAR_SYNC_BIT);
269 else
270 src_writel(dev,
271 MUnit.ODR_C,
272 OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT);
273 ok = 1;
274 break;
275 }
276 /*
277 * Yield the processor in case we are slow
278 */
279 msleep(1);
280 }
281 if (unlikely(ok != 1)) {
282 /*
283 * Restore interrupt mask even though we timed out
284 */
285 aac_adapter_enable_int(dev);
286 return -ETIMEDOUT;
287 }
288 /*
289 * Pull the synch status from Mailbox 0.
290 */
291 if (status)
292 *status = readl(&dev->IndexRegs->Mailbox[0]);
293 if (r1)
294 *r1 = readl(&dev->IndexRegs->Mailbox[1]);
295 if (r2)
296 *r2 = readl(&dev->IndexRegs->Mailbox[2]);
297 if (r3)
298 *r3 = readl(&dev->IndexRegs->Mailbox[3]);
299 if (r4)
300 *r4 = readl(&dev->IndexRegs->Mailbox[4]);
301 if (command == GET_COMM_PREFERRED_SETTINGS)
302 dev->max_msix =
303 readl(&dev->IndexRegs->Mailbox[5]) & 0xFFFF;
304 /*
305 * Clear the synch command doorbell.
306 */
307 if (!dev->msi_enabled)
308 src_writel(dev,
309 MUnit.ODR_C,
310 OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT);
311 }
312
313 /*
314 * Restore interrupt mask
315 */
316 aac_adapter_enable_int(dev);
317 return 0;
318 }
319
320 /**
321 * aac_src_interrupt_adapter - interrupt adapter
322 * @dev: Adapter
323 *
324 * Send an interrupt to the i960 and breakpoint it.
325 */
326
aac_src_interrupt_adapter(struct aac_dev * dev)327 static void aac_src_interrupt_adapter(struct aac_dev *dev)
328 {
329 src_sync_cmd(dev, BREAKPOINT_REQUEST,
330 0, 0, 0, 0, 0, 0,
331 NULL, NULL, NULL, NULL, NULL);
332 }
333
334 /**
335 * aac_src_notify_adapter - send an event to the adapter
336 * @dev: Adapter
337 * @event: Event to send
338 *
339 * Notify the i960 that something it probably cares about has
340 * happened.
341 */
342
aac_src_notify_adapter(struct aac_dev * dev,u32 event)343 static void aac_src_notify_adapter(struct aac_dev *dev, u32 event)
344 {
345 switch (event) {
346
347 case AdapNormCmdQue:
348 src_writel(dev, MUnit.ODR_C,
349 INBOUNDDOORBELL_1 << SRC_ODR_SHIFT);
350 break;
351 case HostNormRespNotFull:
352 src_writel(dev, MUnit.ODR_C,
353 INBOUNDDOORBELL_4 << SRC_ODR_SHIFT);
354 break;
355 case AdapNormRespQue:
356 src_writel(dev, MUnit.ODR_C,
357 INBOUNDDOORBELL_2 << SRC_ODR_SHIFT);
358 break;
359 case HostNormCmdNotFull:
360 src_writel(dev, MUnit.ODR_C,
361 INBOUNDDOORBELL_3 << SRC_ODR_SHIFT);
362 break;
363 case FastIo:
364 src_writel(dev, MUnit.ODR_C,
365 INBOUNDDOORBELL_6 << SRC_ODR_SHIFT);
366 break;
367 case AdapPrintfDone:
368 src_writel(dev, MUnit.ODR_C,
369 INBOUNDDOORBELL_5 << SRC_ODR_SHIFT);
370 break;
371 default:
372 BUG();
373 break;
374 }
375 }
376
377 /**
378 * aac_src_start_adapter - activate adapter
379 * @dev: Adapter
380 *
381 * Start up processing on an i960 based AAC adapter
382 */
383
aac_src_start_adapter(struct aac_dev * dev)384 static void aac_src_start_adapter(struct aac_dev *dev)
385 {
386 struct aac_init *init;
387 int i;
388
389 /* reset host_rrq_idx first */
390 for (i = 0; i < dev->max_msix; i++) {
391 dev->host_rrq_idx[i] = i * dev->vector_cap;
392 atomic_set(&dev->rrq_outstanding[i], 0);
393 }
394 dev->fibs_pushed_no = 0;
395
396 init = dev->init;
397 init->HostElapsedSeconds = cpu_to_le32(get_seconds());
398
399 /* We can only use a 32 bit address here */
400 src_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, (u32)(ulong)dev->init_pa,
401 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
402 }
403
404 /**
405 * aac_src_check_health
406 * @dev: device to check if healthy
407 *
408 * Will attempt to determine if the specified adapter is alive and
409 * capable of handling requests, returning 0 if alive.
410 */
aac_src_check_health(struct aac_dev * dev)411 static int aac_src_check_health(struct aac_dev *dev)
412 {
413 u32 status = src_readl(dev, MUnit.OMR);
414
415 /*
416 * Check to see if the board failed any self tests.
417 */
418 if (unlikely(status & SELF_TEST_FAILED))
419 return -1;
420
421 /*
422 * Check to see if the board panic'd.
423 */
424 if (unlikely(status & KERNEL_PANIC))
425 return (status >> 16) & 0xFF;
426 /*
427 * Wait for the adapter to be up and running.
428 */
429 if (unlikely(!(status & KERNEL_UP_AND_RUNNING)))
430 return -3;
431 /*
432 * Everything is OK
433 */
434 return 0;
435 }
436
437 /**
438 * aac_src_deliver_message
439 * @fib: fib to issue
440 *
441 * Will send a fib, returning 0 if successful.
442 */
aac_src_deliver_message(struct fib * fib)443 static int aac_src_deliver_message(struct fib *fib)
444 {
445 struct aac_dev *dev = fib->dev;
446 struct aac_queue *q = &dev->queues->queue[AdapNormCmdQueue];
447 u32 fibsize;
448 dma_addr_t address;
449 struct aac_fib_xporthdr *pFibX;
450 u16 hdr_size = le16_to_cpu(fib->hw_fib_va->header.Size);
451 u16 vector_no;
452
453 atomic_inc(&q->numpending);
454
455 if (dev->msi_enabled && fib->hw_fib_va->header.Command != AifRequest &&
456 dev->max_msix > 1) {
457 vector_no = fib->vector_no;
458 fib->hw_fib_va->header.Handle += (vector_no << 16);
459 } else {
460 vector_no = 0;
461 }
462
463 atomic_inc(&dev->rrq_outstanding[vector_no]);
464
465 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
466 /* Calculate the amount to the fibsize bits */
467 fibsize = (hdr_size + 127) / 128 - 1;
468 if (fibsize > (ALIGN32 - 1))
469 return -EMSGSIZE;
470 /* New FIB header, 32-bit */
471 address = fib->hw_fib_pa;
472 fib->hw_fib_va->header.StructType = FIB_MAGIC2;
473 fib->hw_fib_va->header.SenderFibAddress = (u32)address;
474 fib->hw_fib_va->header.u.TimeStamp = 0;
475 BUG_ON(upper_32_bits(address) != 0L);
476 address |= fibsize;
477 } else {
478 /* Calculate the amount to the fibsize bits */
479 fibsize = (sizeof(struct aac_fib_xporthdr) + hdr_size + 127) / 128 - 1;
480 if (fibsize > (ALIGN32 - 1))
481 return -EMSGSIZE;
482
483 /* Fill XPORT header */
484 pFibX = (void *)fib->hw_fib_va - sizeof(struct aac_fib_xporthdr);
485 pFibX->Handle = cpu_to_le32(fib->hw_fib_va->header.Handle);
486 pFibX->HostAddress = cpu_to_le64(fib->hw_fib_pa);
487 pFibX->Size = cpu_to_le32(hdr_size);
488
489 /*
490 * The xport header has been 32-byte aligned for us so that fibsize
491 * can be masked out of this address by hardware. -- BenC
492 */
493 address = fib->hw_fib_pa - sizeof(struct aac_fib_xporthdr);
494 if (address & (ALIGN32 - 1))
495 return -EINVAL;
496 address |= fibsize;
497 }
498
499 src_writel(dev, MUnit.IQ_H, upper_32_bits(address) & 0xffffffff);
500 src_writel(dev, MUnit.IQ_L, address & 0xffffffff);
501
502 return 0;
503 }
504
505 /**
506 * aac_src_ioremap
507 * @size: mapping resize request
508 *
509 */
aac_src_ioremap(struct aac_dev * dev,u32 size)510 static int aac_src_ioremap(struct aac_dev *dev, u32 size)
511 {
512 if (!size) {
513 iounmap(dev->regs.src.bar1);
514 dev->regs.src.bar1 = NULL;
515 iounmap(dev->regs.src.bar0);
516 dev->base = dev->regs.src.bar0 = NULL;
517 return 0;
518 }
519 dev->regs.src.bar1 = ioremap(pci_resource_start(dev->pdev, 2),
520 AAC_MIN_SRC_BAR1_SIZE);
521 dev->base = NULL;
522 if (dev->regs.src.bar1 == NULL)
523 return -1;
524 dev->base = dev->regs.src.bar0 = ioremap(dev->base_start, size);
525 if (dev->base == NULL) {
526 iounmap(dev->regs.src.bar1);
527 dev->regs.src.bar1 = NULL;
528 return -1;
529 }
530 dev->IndexRegs = &((struct src_registers __iomem *)
531 dev->base)->u.tupelo.IndexRegs;
532 return 0;
533 }
534
535 /**
536 * aac_srcv_ioremap
537 * @size: mapping resize request
538 *
539 */
aac_srcv_ioremap(struct aac_dev * dev,u32 size)540 static int aac_srcv_ioremap(struct aac_dev *dev, u32 size)
541 {
542 if (!size) {
543 iounmap(dev->regs.src.bar0);
544 dev->base = dev->regs.src.bar0 = NULL;
545 return 0;
546 }
547 dev->base = dev->regs.src.bar0 = ioremap(dev->base_start, size);
548 if (dev->base == NULL)
549 return -1;
550 dev->IndexRegs = &((struct src_registers __iomem *)
551 dev->base)->u.denali.IndexRegs;
552 return 0;
553 }
554
aac_src_restart_adapter(struct aac_dev * dev,int bled)555 static int aac_src_restart_adapter(struct aac_dev *dev, int bled)
556 {
557 u32 var, reset_mask;
558
559 if (bled >= 0) {
560 if (bled)
561 printk(KERN_ERR "%s%d: adapter kernel panic'd %x.\n",
562 dev->name, dev->id, bled);
563 dev->a_ops.adapter_enable_int = aac_src_disable_interrupt;
564 bled = aac_adapter_sync_cmd(dev, IOP_RESET_ALWAYS,
565 0, 0, 0, 0, 0, 0, &var, &reset_mask, NULL, NULL, NULL);
566 if ((bled || (var != 0x00000001)) &&
567 !dev->doorbell_mask)
568 return -EINVAL;
569 else if (dev->doorbell_mask) {
570 reset_mask = dev->doorbell_mask;
571 bled = 0;
572 var = 0x00000001;
573 }
574
575 if ((dev->pdev->device == PMC_DEVICE_S7 ||
576 dev->pdev->device == PMC_DEVICE_S8 ||
577 dev->pdev->device == PMC_DEVICE_S9) && dev->msi_enabled) {
578 aac_src_access_devreg(dev, AAC_ENABLE_INTX);
579 dev->msi_enabled = 0;
580 msleep(5000); /* Delay 5 seconds */
581 }
582
583 if (!bled && (dev->supplement_adapter_info.SupportedOptions2 &
584 AAC_OPTION_DOORBELL_RESET)) {
585 src_writel(dev, MUnit.IDR, reset_mask);
586 ssleep(45);
587 } else {
588 src_writel(dev, MUnit.IDR, 0x100);
589 ssleep(45);
590 }
591 }
592
593 if (src_readl(dev, MUnit.OMR) & KERNEL_PANIC)
594 return -ENODEV;
595
596 if (startup_timeout < 300)
597 startup_timeout = 300;
598
599 return 0;
600 }
601
602 /**
603 * aac_src_select_comm - Select communications method
604 * @dev: Adapter
605 * @comm: communications method
606 */
aac_src_select_comm(struct aac_dev * dev,int comm)607 int aac_src_select_comm(struct aac_dev *dev, int comm)
608 {
609 switch (comm) {
610 case AAC_COMM_MESSAGE:
611 dev->a_ops.adapter_intr = aac_src_intr_message;
612 dev->a_ops.adapter_deliver = aac_src_deliver_message;
613 break;
614 default:
615 return 1;
616 }
617 return 0;
618 }
619
620 /**
621 * aac_src_init - initialize an Cardinal Frey Bar card
622 * @dev: device to configure
623 *
624 */
625
aac_src_init(struct aac_dev * dev)626 int aac_src_init(struct aac_dev *dev)
627 {
628 unsigned long start;
629 unsigned long status;
630 int restart = 0;
631 int instance = dev->id;
632 const char *name = dev->name;
633
634 dev->a_ops.adapter_ioremap = aac_src_ioremap;
635 dev->a_ops.adapter_comm = aac_src_select_comm;
636
637 dev->base_size = AAC_MIN_SRC_BAR0_SIZE;
638 if (aac_adapter_ioremap(dev, dev->base_size)) {
639 printk(KERN_WARNING "%s: unable to map adapter.\n", name);
640 goto error_iounmap;
641 }
642
643 /* Failure to reset here is an option ... */
644 dev->a_ops.adapter_sync_cmd = src_sync_cmd;
645 dev->a_ops.adapter_enable_int = aac_src_disable_interrupt;
646 if ((aac_reset_devices || reset_devices) &&
647 !aac_src_restart_adapter(dev, 0))
648 ++restart;
649 /*
650 * Check to see if the board panic'd while booting.
651 */
652 status = src_readl(dev, MUnit.OMR);
653 if (status & KERNEL_PANIC) {
654 if (aac_src_restart_adapter(dev, aac_src_check_health(dev)))
655 goto error_iounmap;
656 ++restart;
657 }
658 /*
659 * Check to see if the board failed any self tests.
660 */
661 status = src_readl(dev, MUnit.OMR);
662 if (status & SELF_TEST_FAILED) {
663 printk(KERN_ERR "%s%d: adapter self-test failed.\n",
664 dev->name, instance);
665 goto error_iounmap;
666 }
667 /*
668 * Check to see if the monitor panic'd while booting.
669 */
670 if (status & MONITOR_PANIC) {
671 printk(KERN_ERR "%s%d: adapter monitor panic.\n",
672 dev->name, instance);
673 goto error_iounmap;
674 }
675 start = jiffies;
676 /*
677 * Wait for the adapter to be up and running. Wait up to 3 minutes
678 */
679 while (!((status = src_readl(dev, MUnit.OMR)) &
680 KERNEL_UP_AND_RUNNING)) {
681 if ((restart &&
682 (status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC))) ||
683 time_after(jiffies, start+HZ*startup_timeout)) {
684 printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n",
685 dev->name, instance, status);
686 goto error_iounmap;
687 }
688 if (!restart &&
689 ((status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC)) ||
690 time_after(jiffies, start + HZ *
691 ((startup_timeout > 60)
692 ? (startup_timeout - 60)
693 : (startup_timeout / 2))))) {
694 if (likely(!aac_src_restart_adapter(dev,
695 aac_src_check_health(dev))))
696 start = jiffies;
697 ++restart;
698 }
699 msleep(1);
700 }
701 if (restart && aac_commit)
702 aac_commit = 1;
703 /*
704 * Fill in the common function dispatch table.
705 */
706 dev->a_ops.adapter_interrupt = aac_src_interrupt_adapter;
707 dev->a_ops.adapter_disable_int = aac_src_disable_interrupt;
708 dev->a_ops.adapter_enable_int = aac_src_disable_interrupt;
709 dev->a_ops.adapter_notify = aac_src_notify_adapter;
710 dev->a_ops.adapter_sync_cmd = src_sync_cmd;
711 dev->a_ops.adapter_check_health = aac_src_check_health;
712 dev->a_ops.adapter_restart = aac_src_restart_adapter;
713
714 /*
715 * First clear out all interrupts. Then enable the one's that we
716 * can handle.
717 */
718 aac_adapter_comm(dev, AAC_COMM_MESSAGE);
719 aac_adapter_disable_int(dev);
720 src_writel(dev, MUnit.ODR_C, 0xffffffff);
721 aac_adapter_enable_int(dev);
722
723 if (aac_init_adapter(dev) == NULL)
724 goto error_iounmap;
725 if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE1)
726 goto error_iounmap;
727
728 dev->msi = aac_msi && !pci_enable_msi(dev->pdev);
729
730 dev->aac_msix[0].vector_no = 0;
731 dev->aac_msix[0].dev = dev;
732
733 if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
734 IRQF_SHARED, "aacraid", &(dev->aac_msix[0])) < 0) {
735
736 if (dev->msi)
737 pci_disable_msi(dev->pdev);
738
739 printk(KERN_ERR "%s%d: Interrupt unavailable.\n",
740 name, instance);
741 goto error_iounmap;
742 }
743 dev->dbg_base = pci_resource_start(dev->pdev, 2);
744 dev->dbg_base_mapped = dev->regs.src.bar1;
745 dev->dbg_size = AAC_MIN_SRC_BAR1_SIZE;
746 dev->a_ops.adapter_enable_int = aac_src_enable_interrupt_message;
747
748 aac_adapter_enable_int(dev);
749
750 if (!dev->sync_mode) {
751 /*
752 * Tell the adapter that all is configured, and it can
753 * start accepting requests
754 */
755 aac_src_start_adapter(dev);
756 }
757 return 0;
758
759 error_iounmap:
760
761 return -1;
762 }
763
764 /**
765 * aac_srcv_init - initialize an SRCv card
766 * @dev: device to configure
767 *
768 */
769
aac_srcv_init(struct aac_dev * dev)770 int aac_srcv_init(struct aac_dev *dev)
771 {
772 unsigned long start;
773 unsigned long status;
774 int restart = 0;
775 int instance = dev->id;
776 int i, j;
777 const char *name = dev->name;
778 int cpu;
779
780 dev->a_ops.adapter_ioremap = aac_srcv_ioremap;
781 dev->a_ops.adapter_comm = aac_src_select_comm;
782
783 dev->base_size = AAC_MIN_SRCV_BAR0_SIZE;
784 if (aac_adapter_ioremap(dev, dev->base_size)) {
785 printk(KERN_WARNING "%s: unable to map adapter.\n", name);
786 goto error_iounmap;
787 }
788
789 /* Failure to reset here is an option ... */
790 dev->a_ops.adapter_sync_cmd = src_sync_cmd;
791 dev->a_ops.adapter_enable_int = aac_src_disable_interrupt;
792 if ((aac_reset_devices || reset_devices) &&
793 !aac_src_restart_adapter(dev, 0))
794 ++restart;
795 /*
796 * Check to see if flash update is running.
797 * Wait for the adapter to be up and running. Wait up to 5 minutes
798 */
799 status = src_readl(dev, MUnit.OMR);
800 if (status & FLASH_UPD_PENDING) {
801 start = jiffies;
802 do {
803 status = src_readl(dev, MUnit.OMR);
804 if (time_after(jiffies, start+HZ*FWUPD_TIMEOUT)) {
805 printk(KERN_ERR "%s%d: adapter flash update failed.\n",
806 dev->name, instance);
807 goto error_iounmap;
808 }
809 } while (!(status & FLASH_UPD_SUCCESS) &&
810 !(status & FLASH_UPD_FAILED));
811 /* Delay 10 seconds.
812 * Because right now FW is doing a soft reset,
813 * do not read scratch pad register at this time
814 */
815 ssleep(10);
816 }
817 /*
818 * Check to see if the board panic'd while booting.
819 */
820 status = src_readl(dev, MUnit.OMR);
821 if (status & KERNEL_PANIC) {
822 if (aac_src_restart_adapter(dev, aac_src_check_health(dev)))
823 goto error_iounmap;
824 ++restart;
825 }
826 /*
827 * Check to see if the board failed any self tests.
828 */
829 status = src_readl(dev, MUnit.OMR);
830 if (status & SELF_TEST_FAILED) {
831 printk(KERN_ERR "%s%d: adapter self-test failed.\n", dev->name, instance);
832 goto error_iounmap;
833 }
834 /*
835 * Check to see if the monitor panic'd while booting.
836 */
837 if (status & MONITOR_PANIC) {
838 printk(KERN_ERR "%s%d: adapter monitor panic.\n", dev->name, instance);
839 goto error_iounmap;
840 }
841 start = jiffies;
842 /*
843 * Wait for the adapter to be up and running. Wait up to 3 minutes
844 */
845 while (!((status = src_readl(dev, MUnit.OMR)) &
846 KERNEL_UP_AND_RUNNING) ||
847 status == 0xffffffff) {
848 if ((restart &&
849 (status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC))) ||
850 time_after(jiffies, start+HZ*startup_timeout)) {
851 printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n",
852 dev->name, instance, status);
853 goto error_iounmap;
854 }
855 if (!restart &&
856 ((status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC)) ||
857 time_after(jiffies, start + HZ *
858 ((startup_timeout > 60)
859 ? (startup_timeout - 60)
860 : (startup_timeout / 2))))) {
861 if (likely(!aac_src_restart_adapter(dev, aac_src_check_health(dev))))
862 start = jiffies;
863 ++restart;
864 }
865 msleep(1);
866 }
867 if (restart && aac_commit)
868 aac_commit = 1;
869 /*
870 * Fill in the common function dispatch table.
871 */
872 dev->a_ops.adapter_interrupt = aac_src_interrupt_adapter;
873 dev->a_ops.adapter_disable_int = aac_src_disable_interrupt;
874 dev->a_ops.adapter_enable_int = aac_src_disable_interrupt;
875 dev->a_ops.adapter_notify = aac_src_notify_adapter;
876 dev->a_ops.adapter_sync_cmd = src_sync_cmd;
877 dev->a_ops.adapter_check_health = aac_src_check_health;
878 dev->a_ops.adapter_restart = aac_src_restart_adapter;
879
880 /*
881 * First clear out all interrupts. Then enable the one's that we
882 * can handle.
883 */
884 aac_adapter_comm(dev, AAC_COMM_MESSAGE);
885 aac_adapter_disable_int(dev);
886 src_writel(dev, MUnit.ODR_C, 0xffffffff);
887 aac_adapter_enable_int(dev);
888
889 if (aac_init_adapter(dev) == NULL)
890 goto error_iounmap;
891 if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE2)
892 goto error_iounmap;
893 if (dev->msi_enabled)
894 aac_src_access_devreg(dev, AAC_ENABLE_MSIX);
895 if (!dev->sync_mode && dev->msi_enabled && dev->max_msix > 1) {
896 cpu = cpumask_first(cpu_online_mask);
897 for (i = 0; i < dev->max_msix; i++) {
898 dev->aac_msix[i].vector_no = i;
899 dev->aac_msix[i].dev = dev;
900
901 if (request_irq(dev->msixentry[i].vector,
902 dev->a_ops.adapter_intr,
903 0,
904 "aacraid",
905 &(dev->aac_msix[i]))) {
906 printk(KERN_ERR "%s%d: Failed to register IRQ for vector %d.\n",
907 name, instance, i);
908 for (j = 0 ; j < i ; j++)
909 free_irq(dev->msixentry[j].vector,
910 &(dev->aac_msix[j]));
911 pci_disable_msix(dev->pdev);
912 goto error_iounmap;
913 }
914 if (irq_set_affinity_hint(
915 dev->msixentry[i].vector,
916 get_cpu_mask(cpu))) {
917 printk(KERN_ERR "%s%d: Failed to set IRQ affinity for cpu %d\n",
918 name, instance, cpu);
919 }
920 cpu = cpumask_next(cpu, cpu_online_mask);
921 }
922 } else {
923 dev->aac_msix[0].vector_no = 0;
924 dev->aac_msix[0].dev = dev;
925
926 if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
927 IRQF_SHARED,
928 "aacraid",
929 &(dev->aac_msix[0])) < 0) {
930 if (dev->msi)
931 pci_disable_msi(dev->pdev);
932 printk(KERN_ERR "%s%d: Interrupt unavailable.\n",
933 name, instance);
934 goto error_iounmap;
935 }
936 }
937 dev->dbg_base = dev->base_start;
938 dev->dbg_base_mapped = dev->base;
939 dev->dbg_size = dev->base_size;
940 dev->a_ops.adapter_enable_int = aac_src_enable_interrupt_message;
941
942 aac_adapter_enable_int(dev);
943
944 if (!dev->sync_mode) {
945 /*
946 * Tell the adapter that all is configured, and it can
947 * start accepting requests
948 */
949 aac_src_start_adapter(dev);
950 }
951 return 0;
952
953 error_iounmap:
954
955 return -1;
956 }
957
aac_src_access_devreg(struct aac_dev * dev,int mode)958 void aac_src_access_devreg(struct aac_dev *dev, int mode)
959 {
960 u_int32_t val;
961
962 switch (mode) {
963 case AAC_ENABLE_INTERRUPT:
964 src_writel(dev,
965 MUnit.OIMR,
966 dev->OIMR = (dev->msi_enabled ?
967 AAC_INT_ENABLE_TYPE1_MSIX :
968 AAC_INT_ENABLE_TYPE1_INTX));
969 break;
970
971 case AAC_DISABLE_INTERRUPT:
972 src_writel(dev,
973 MUnit.OIMR,
974 dev->OIMR = AAC_INT_DISABLE_ALL);
975 break;
976
977 case AAC_ENABLE_MSIX:
978 /* set bit 6 */
979 val = src_readl(dev, MUnit.IDR);
980 val |= 0x40;
981 src_writel(dev, MUnit.IDR, val);
982 src_readl(dev, MUnit.IDR);
983 /* unmask int. */
984 val = PMC_ALL_INTERRUPT_BITS;
985 src_writel(dev, MUnit.IOAR, val);
986 val = src_readl(dev, MUnit.OIMR);
987 src_writel(dev,
988 MUnit.OIMR,
989 val & (~(PMC_GLOBAL_INT_BIT2 | PMC_GLOBAL_INT_BIT0)));
990 break;
991
992 case AAC_DISABLE_MSIX:
993 /* reset bit 6 */
994 val = src_readl(dev, MUnit.IDR);
995 val &= ~0x40;
996 src_writel(dev, MUnit.IDR, val);
997 src_readl(dev, MUnit.IDR);
998 break;
999
1000 case AAC_CLEAR_AIF_BIT:
1001 /* set bit 5 */
1002 val = src_readl(dev, MUnit.IDR);
1003 val |= 0x20;
1004 src_writel(dev, MUnit.IDR, val);
1005 src_readl(dev, MUnit.IDR);
1006 break;
1007
1008 case AAC_CLEAR_SYNC_BIT:
1009 /* set bit 4 */
1010 val = src_readl(dev, MUnit.IDR);
1011 val |= 0x10;
1012 src_writel(dev, MUnit.IDR, val);
1013 src_readl(dev, MUnit.IDR);
1014 break;
1015
1016 case AAC_ENABLE_INTX:
1017 /* set bit 7 */
1018 val = src_readl(dev, MUnit.IDR);
1019 val |= 0x80;
1020 src_writel(dev, MUnit.IDR, val);
1021 src_readl(dev, MUnit.IDR);
1022 /* unmask int. */
1023 val = PMC_ALL_INTERRUPT_BITS;
1024 src_writel(dev, MUnit.IOAR, val);
1025 src_readl(dev, MUnit.IOAR);
1026 val = src_readl(dev, MUnit.OIMR);
1027 src_writel(dev, MUnit.OIMR,
1028 val & (~(PMC_GLOBAL_INT_BIT2)));
1029 break;
1030
1031 default:
1032 break;
1033 }
1034 }
1035
aac_src_get_sync_status(struct aac_dev * dev)1036 static int aac_src_get_sync_status(struct aac_dev *dev)
1037 {
1038
1039 int val;
1040
1041 if (dev->msi_enabled)
1042 val = src_readl(dev, MUnit.ODR_MSI) & 0x1000 ? 1 : 0;
1043 else
1044 val = src_readl(dev, MUnit.ODR_R) >> SRC_ODR_SHIFT;
1045
1046 return val;
1047 }
1048