drivers/scsi/aacraid/src.c

   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
  49 static 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                 if (dev->aif_thread && dev->fsa_dev)
 139                         aac_intr_normal(dev, 0, 2, 0, NULL);
 140                 if (dev->msi_enabled)
 141                         aac_src_access_devreg(dev, AAC_CLEAR_AIF_BIT);
 142                 mode = 0;
 143         }
 144
 145         if (mode) {
 146                 index = dev->host_rrq_idx[vector_no];
 147
 148                 for (;;) {
 149                         isFastResponse = 0;
 150                         /* remove toggle bit (31) */
 151                         handle = (dev->host_rrq[index] & 0x7fffffff);
 152                         /* check fast response bit (30) */
 153                         if (handle & 0x40000000)
 154                                 isFastResponse = 1;
 155                         handle &= 0x0000ffff;
 156                         if (handle == 0)
 157                                 break;
 158                         if (dev->msi_enabled && dev->max_msix > 1)
 159                                 atomic_dec(&dev->rrq_outstanding[vector_no]);
 160                         dev->host_rrq[index++] = 0;
 161                         aac_intr_normal(dev, handle-1, 0, isFastResponse, NULL);
 162                         if (index == (vector_no + 1) * dev->vector_cap)
 163                                 index = vector_no * dev->vector_cap;
 164                         dev->host_rrq_idx[vector_no] = index;
 165                 }
 166                 mode = 0;
 167         }
 168
 169         return IRQ_HANDLED;
 170 }
 171
 172 /**
 173  *      aac_src_disable_interrupt       -       Disable interrupts
 174  *      @dev: Adapter
 175  */
 176
 177 static void aac_src_disable_interrupt(struct aac_dev *dev)
 178 {
 179         src_writel(dev, MUnit.OIMR, dev->OIMR = 0xffffffff);
 180 }
 181
 182 /**
 183  *      aac_src_enable_interrupt_message        -       Enable interrupts
 184  *      @dev: Adapter
 185  */
 186
 187 static void aac_src_enable_interrupt_message(struct aac_dev *dev)
 188 {
 189         aac_src_access_devreg(dev, AAC_ENABLE_INTERRUPT);
 190 }
 191
 192 /**
 193  *      src_sync_cmd    -       send a command and wait
 194  *      @dev: Adapter
 195  *      @command: Command to execute
 196  *      @p1: first parameter
 197  *      @ret: adapter status
 198  *
 199  *      This routine will send a synchronous command to the adapter and wait
 200  *      for its completion.
 201  */
 202
 203 static int src_sync_cmd(struct aac_dev *dev, u32 command,
 204         u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6,
 205         u32 *status, u32 * r1, u32 * r2, u32 * r3, u32 * r4)
 206 {
 207         unsigned long start;
 208         unsigned long delay;
 209         int ok;
 210
 211         /*
 212          *      Write the command into Mailbox 0
 213          */
 214         writel(command, &dev->IndexRegs->Mailbox[0]);
 215         /*
 216          *      Write the parameters into Mailboxes 1 - 6
 217          */
 218         writel(p1, &dev->IndexRegs->Mailbox[1]);
 219         writel(p2, &dev->IndexRegs->Mailbox[2]);
 220         writel(p3, &dev->IndexRegs->Mailbox[3]);
 221         writel(p4, &dev->IndexRegs->Mailbox[4]);
 222
 223         /*
 224          *      Clear the synch command doorbell to start on a clean slate.
 225          */
 226         if (!dev->msi_enabled)
 227                 src_writel(dev,
 228                            MUnit.ODR_C,
 229                            OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT);
 230
 231         /*
 232          *      Disable doorbell interrupts
 233          */
 234         src_writel(dev, MUnit.OIMR, dev->OIMR = 0xffffffff);
 235
 236         /*
 237          *      Force the completion of the mask register write before issuing
 238          *      the interrupt.
 239          */
 240         src_readl(dev, MUnit.OIMR);
 241
 242         /*
 243          *      Signal that there is a new synch command
 244          */
 245         src_writel(dev, MUnit.IDR, INBOUNDDOORBELL_0 << SRC_IDR_SHIFT);
 246
 247         if (!dev->sync_mode || command != SEND_SYNCHRONOUS_FIB) {
 248                 ok = 0;
 249                 start = jiffies;
 250
 251                 if (command == IOP_RESET_ALWAYS) {
 252                         /* Wait up to 10 sec */
 253                         delay = 10*HZ;
 254                 } else {
 255                         /* Wait up to 5 minutes */
 256                         delay = 300*HZ;
 257                 }
 258                 while (time_before(jiffies, start+delay)) {
 259                         udelay(5);      /* Delay 5 microseconds to let Mon960 get info. */
 260                         /*
 261                          *      Mon960 will set doorbell0 bit when it has completed the command.
 262                          */
 263                         if (aac_src_get_sync_status(dev) & OUTBOUNDDOORBELL_0) {
 264                                 /*
 265                                  *      Clear the doorbell.
 266                                  */
 267                                 if (dev->msi_enabled)
 268                                         aac_src_access_devreg(dev,
 269                                                 AAC_CLEAR_SYNC_BIT);
 270                                 else
 271                                         src_writel(dev,
 272                                                 MUnit.ODR_C,
 273                                                 OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT);
 274                                 ok = 1;
 275                                 break;
 276                         }
 277                         /*
 278                          *      Yield the processor in case we are slow
 279                          */
 280                         msleep(1);
 281                 }
 282                 if (unlikely(ok != 1)) {
 283                         /*
 284                          *      Restore interrupt mask even though we timed out
 285                          */
 286                         aac_adapter_enable_int(dev);
 287                         return -ETIMEDOUT;
 288                 }
 289                 /*
 290                  *      Pull the synch status from Mailbox 0.
 291                  */
 292                 if (status)
 293                         *status = readl(&dev->IndexRegs->Mailbox[0]);
 294                 if (r1)
 295                         *r1 = readl(&dev->IndexRegs->Mailbox[1]);
 296                 if (r2)
 297                         *r2 = readl(&dev->IndexRegs->Mailbox[2]);
 298                 if (r3)
 299                         *r3 = readl(&dev->IndexRegs->Mailbox[3]);
 300                 if (r4)
 301                         *r4 = readl(&dev->IndexRegs->Mailbox[4]);
 302                 if (command == GET_COMM_PREFERRED_SETTINGS)
 303                         dev->max_msix =
 304                                 readl(&dev->IndexRegs->Mailbox[5]) & 0xFFFF;
 305                 /*
 306                  *      Clear the synch command doorbell.
 307                  */
 308                 if (!dev->msi_enabled)
 309                         src_writel(dev,
 310                                 MUnit.ODR_C,
 311                                 OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT);
 312         }
 313
 314         /*
 315          *      Restore interrupt mask
 316          */
 317         aac_adapter_enable_int(dev);
 318         return 0;
 319 }
 320
 321 /**
 322  *      aac_src_interrupt_adapter       -       interrupt adapter
 323  *      @dev: Adapter
 324  *
 325  *      Send an interrupt to the i960 and breakpoint it.
 326  */
 327
 328 static void aac_src_interrupt_adapter(struct aac_dev *dev)
 329 {
 330         src_sync_cmd(dev, BREAKPOINT_REQUEST,
 331                 0, 0, 0, 0, 0, 0,
 332                 NULL, NULL, NULL, NULL, NULL);
 333 }
 334
 335 /**
 336  *      aac_src_notify_adapter          -       send an event to the adapter
 337  *      @dev: Adapter
 338  *      @event: Event to send
 339  *
 340  *      Notify the i960 that something it probably cares about has
 341  *      happened.
 342  */
 343
 344 static void aac_src_notify_adapter(struct aac_dev *dev, u32 event)
 345 {
 346         switch (event) {
 347
 348         case AdapNormCmdQue:
 349                 src_writel(dev, MUnit.ODR_C,
 350                         INBOUNDDOORBELL_1 << SRC_ODR_SHIFT);
 351                 break;
 352         case HostNormRespNotFull:
 353                 src_writel(dev, MUnit.ODR_C,
 354                         INBOUNDDOORBELL_4 << SRC_ODR_SHIFT);
 355                 break;
 356         case AdapNormRespQue:
 357                 src_writel(dev, MUnit.ODR_C,
 358                         INBOUNDDOORBELL_2 << SRC_ODR_SHIFT);
 359                 break;
 360         case HostNormCmdNotFull:
 361                 src_writel(dev, MUnit.ODR_C,
 362                         INBOUNDDOORBELL_3 << SRC_ODR_SHIFT);
 363                 break;
 364         case FastIo:
 365                 src_writel(dev, MUnit.ODR_C,
 366                         INBOUNDDOORBELL_6 << SRC_ODR_SHIFT);
 367                 break;
 368         case AdapPrintfDone:
 369                 src_writel(dev, MUnit.ODR_C,
 370                         INBOUNDDOORBELL_5 << SRC_ODR_SHIFT);
 371                 break;
 372         default:
 373                 BUG();
 374                 break;
 375         }
 376 }
 377
 378 /**
 379  *      aac_src_start_adapter           -       activate adapter
 380  *      @dev:   Adapter
 381  *
 382  *      Start up processing on an i960 based AAC adapter
 383  */
 384
 385 static void aac_src_start_adapter(struct aac_dev *dev)
 386 {
 387         struct aac_init *init;
 388         int i;
 389
 390          /* reset host_rrq_idx first */
 391         for (i = 0; i < dev->max_msix; i++) {
 392                 dev->host_rrq_idx[i] = i * dev->vector_cap;
 393                 atomic_set(&dev->rrq_outstanding[i], 0);
 394         }
 395         dev->fibs_pushed_no = 0;
 396
 397         init = dev->init;
 398         init->HostElapsedSeconds = cpu_to_le32(get_seconds());
 399
 400         /* We can only use a 32 bit address here */
 401         src_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, (u32)(ulong)dev->init_pa,
 402           0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
 403 }
 404
 405 /**
 406  *      aac_src_check_health
 407  *      @dev: device to check if healthy
 408  *
 409  *      Will attempt to determine if the specified adapter is alive and
 410  *      capable of handling requests, returning 0 if alive.
 411  */
 412 static int aac_src_check_health(struct aac_dev *dev)
 413 {
 414         u32 status = src_readl(dev, MUnit.OMR);
 415
 416         /*
 417          *      Check to see if the board failed any self tests.
 418          */
 419         if (unlikely(status & SELF_TEST_FAILED))
 420                 return -1;
 421
 422         /*
 423          *      Check to see if the board panic'd.
 424          */
 425         if (unlikely(status & KERNEL_PANIC))
 426                 return (status >> 16) & 0xFF;
 427         /*
 428          *      Wait for the adapter to be up and running.
 429          */
 430         if (unlikely(!(status & KERNEL_UP_AND_RUNNING)))
 431                 return -3;
 432         /*
 433          *      Everything is OK
 434          */
 435         return 0;
 436 }
 437
 438 /**
 439  *      aac_src_deliver_message
 440  *      @fib: fib to issue
 441  *
 442  *      Will send a fib, returning 0 if successful.
 443  */
 444 static int aac_src_deliver_message(struct fib *fib)
 445 {
 446         struct aac_dev *dev = fib->dev;
 447         struct aac_queue *q = &dev->queues->queue[AdapNormCmdQueue];
 448         u32 fibsize;
 449         dma_addr_t address;
 450         struct aac_fib_xporthdr *pFibX;
 451 #if !defined(writeq)
 452         unsigned long flags;
 453 #endif
 454
 455         u16 hdr_size = le16_to_cpu(fib->hw_fib_va->header.Size);
 456         u16 vector_no;
 457
 458         atomic_inc(&q->numpending);
 459
 460         if (dev->msi_enabled && fib->hw_fib_va->header.Command != AifRequest &&
 461             dev->max_msix > 1) {
 462                 vector_no = fib->vector_no;
 463                 fib->hw_fib_va->header.Handle += (vector_no << 16);
 464         } else {
 465                 vector_no = 0;
 466         }
 467
 468         atomic_inc(&dev->rrq_outstanding[vector_no]);
 469
 470         if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
 471                 /* Calculate the amount to the fibsize bits */
 472                 fibsize = (hdr_size + 127) / 128 - 1;
 473                 if (fibsize > (ALIGN32 - 1))
 474                         return -EMSGSIZE;
 475                 /* New FIB header, 32-bit */
 476                 address = fib->hw_fib_pa;
 477                 fib->hw_fib_va->header.StructType = FIB_MAGIC2;
 478                 fib->hw_fib_va->header.SenderFibAddress = (u32)address;
 479                 fib->hw_fib_va->header.u.TimeStamp = 0;
 480                 BUG_ON(upper_32_bits(address) != 0L);
 481                 address |= fibsize;
 482         } else {
 483                 /* Calculate the amount to the fibsize bits */
 484                 fibsize = (sizeof(struct aac_fib_xporthdr) + hdr_size + 127) / 128 - 1;
 485                 if (fibsize > (ALIGN32 - 1))
 486                         return -EMSGSIZE;
 487
 488                 /* Fill XPORT header */
 489                 pFibX = (void *)fib->hw_fib_va - sizeof(struct aac_fib_xporthdr);
 490                 pFibX->Handle = cpu_to_le32(fib->hw_fib_va->header.Handle);
 491                 pFibX->HostAddress = cpu_to_le64(fib->hw_fib_pa);
 492                 pFibX->Size = cpu_to_le32(hdr_size);
 493
 494                 /*
 495                  * The xport header has been 32-byte aligned for us so that fibsize
 496                  * can be masked out of this address by hardware. -- BenC
 497                  */
 498                 address = fib->hw_fib_pa - sizeof(struct aac_fib_xporthdr);
 499                 if (address & (ALIGN32 - 1))
 500                         return -EINVAL;
 501                 address |= fibsize;
 502         }
 503 #if defined(writeq)
 504         src_writeq(dev, MUnit.IQ_L, (u64)address);
 505 #else
 506         spin_lock_irqsave(&fib->dev->iq_lock, flags);
 507         src_writel(dev, MUnit.IQ_H, upper_32_bits(address) & 0xffffffff);
 508         src_writel(dev, MUnit.IQ_L, address & 0xffffffff);
 509         spin_unlock_irqrestore(&fib->dev->iq_lock, flags);
 510 #endif
 511         return 0;
 512 }
 513
 514 /**
 515  *      aac_src_ioremap
 516  *      @size: mapping resize request
 517  *
 518  */
 519 static int aac_src_ioremap(struct aac_dev *dev, u32 size)
 520 {
 521         if (!size) {
 522                 iounmap(dev->regs.src.bar1);
 523                 dev->regs.src.bar1 = NULL;
 524                 iounmap(dev->regs.src.bar0);
 525                 dev->base = dev->regs.src.bar0 = NULL;
 526                 return 0;
 527         }
 528         dev->regs.src.bar1 = ioremap(pci_resource_start(dev->pdev, 2),
 529                 AAC_MIN_SRC_BAR1_SIZE);
 530         dev->base = NULL;
 531         if (dev->regs.src.bar1 == NULL)
 532                 return -1;
 533         dev->base = dev->regs.src.bar0 = ioremap(dev->base_start, size);
 534         if (dev->base == NULL) {
 535                 iounmap(dev->regs.src.bar1);
 536                 dev->regs.src.bar1 = NULL;
 537                 return -1;
 538         }
 539         dev->IndexRegs = &((struct src_registers __iomem *)
 540                 dev->base)->u.tupelo.IndexRegs;
 541         return 0;
 542 }
 543
 544 /**
 545  *  aac_srcv_ioremap
 546  *      @size: mapping resize request
 547  *
 548  */
 549 static int aac_srcv_ioremap(struct aac_dev *dev, u32 size)
 550 {
 551         if (!size) {
 552                 iounmap(dev->regs.src.bar0);
 553                 dev->base = dev->regs.src.bar0 = NULL;
 554                 return 0;
 555         }
 556         dev->base = dev->regs.src.bar0 = ioremap(dev->base_start, size);
 557         if (dev->base == NULL)
 558                 return -1;
 559         dev->IndexRegs = &((struct src_registers __iomem *)
 560                 dev->base)->u.denali.IndexRegs;
 561         return 0;
 562 }
 563
 564 static int aac_src_restart_adapter(struct aac_dev *dev, int bled)
 565 {
 566         u32 var, reset_mask;
 567
 568         if (bled >= 0) {
 569                 if (bled)
 570                         printk(KERN_ERR "%s%d: adapter kernel panic'd %x.\n",
 571                                 dev->name, dev->id, bled);
 572                 dev->a_ops.adapter_enable_int = aac_src_disable_interrupt;
 573                 bled = aac_adapter_sync_cmd(dev, IOP_RESET_ALWAYS,
 574                         0, 0, 0, 0, 0, 0, &var, &reset_mask, NULL, NULL, NULL);
 575                 if ((bled || (var != 0x00000001)) &&
 576                     !dev->doorbell_mask)
 577                         return -EINVAL;
 578                 else if (dev->doorbell_mask) {
 579                         reset_mask = dev->doorbell_mask;
 580                         bled = 0;
 581                         var = 0x00000001;
 582                 }
 583
 584                 if ((dev->pdev->device == PMC_DEVICE_S7 ||
 585                     dev->pdev->device == PMC_DEVICE_S8 ||
 586                     dev->pdev->device == PMC_DEVICE_S9) && dev->msi_enabled) {
 587                         aac_src_access_devreg(dev, AAC_ENABLE_INTX);
 588                         dev->msi_enabled = 0;
 589                         msleep(5000); /* Delay 5 seconds */
 590                 }
 591
 592                 if (!bled && (dev->supplement_adapter_info.SupportedOptions2 &
 593                     AAC_OPTION_DOORBELL_RESET)) {
 594                         src_writel(dev, MUnit.IDR, reset_mask);
 595                         ssleep(45);
 596                 } else {
 597                         src_writel(dev, MUnit.IDR, 0x100);
 598                         ssleep(45);
 599                 }
 600         }
 601
 602         if (src_readl(dev, MUnit.OMR) & KERNEL_PANIC)
 603                 return -ENODEV;
 604
 605         if (startup_timeout < 300)
 606                 startup_timeout = 300;
 607
 608         return 0;
 609 }
 610
 611 /**
 612  *      aac_src_select_comm     -       Select communications method
 613  *      @dev: Adapter
 614  *      @comm: communications method
 615  */
 616 static int aac_src_select_comm(struct aac_dev *dev, int comm)
 617 {
 618         switch (comm) {
 619         case AAC_COMM_MESSAGE:
 620                 dev->a_ops.adapter_intr = aac_src_intr_message;
 621                 dev->a_ops.adapter_deliver = aac_src_deliver_message;
 622                 break;
 623         default:
 624                 return 1;
 625         }
 626         return 0;
 627 }
 628
 629 /**
 630  *  aac_src_init        -       initialize an Cardinal Frey Bar card
 631  *  @dev: device to configure
 632  *
 633  */
 634
 635 int aac_src_init(struct aac_dev *dev)
 636 {
 637         unsigned long start;
 638         unsigned long status;
 639         int restart = 0;
 640         int instance = dev->id;
 641         const char *name = dev->name;
 642
 643         dev->a_ops.adapter_ioremap = aac_src_ioremap;
 644         dev->a_ops.adapter_comm = aac_src_select_comm;
 645
 646         dev->base_size = AAC_MIN_SRC_BAR0_SIZE;
 647         if (aac_adapter_ioremap(dev, dev->base_size)) {
 648                 printk(KERN_WARNING "%s: unable to map adapter.\n", name);
 649                 goto error_iounmap;
 650         }
 651
 652         /* Failure to reset here is an option ... */
 653         dev->a_ops.adapter_sync_cmd = src_sync_cmd;
 654         dev->a_ops.adapter_enable_int = aac_src_disable_interrupt;
 655         if ((aac_reset_devices || reset_devices) &&
 656                 !aac_src_restart_adapter(dev, 0))
 657                 ++restart;
 658         /*
 659          *      Check to see if the board panic'd while booting.
 660          */
 661         status = src_readl(dev, MUnit.OMR);
 662         if (status & KERNEL_PANIC) {
 663                 if (aac_src_restart_adapter(dev, aac_src_check_health(dev)))
 664                         goto error_iounmap;
 665                 ++restart;
 666         }
 667         /*
 668          *      Check to see if the board failed any self tests.
 669          */
 670         status = src_readl(dev, MUnit.OMR);
 671         if (status & SELF_TEST_FAILED) {
 672                 printk(KERN_ERR "%s%d: adapter self-test failed.\n",
 673                         dev->name, instance);
 674                 goto error_iounmap;
 675         }
 676         /*
 677          *      Check to see if the monitor panic'd while booting.
 678          */
 679         if (status & MONITOR_PANIC) {
 680                 printk(KERN_ERR "%s%d: adapter monitor panic.\n",
 681                         dev->name, instance);
 682                 goto error_iounmap;
 683         }
 684         start = jiffies;
 685         /*
 686          *      Wait for the adapter to be up and running. Wait up to 3 minutes
 687          */
 688         while (!((status = src_readl(dev, MUnit.OMR)) &
 689                 KERNEL_UP_AND_RUNNING)) {
 690                 if ((restart &&
 691                   (status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC))) ||
 692                   time_after(jiffies, start+HZ*startup_timeout)) {
 693                         printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n",
 694                                         dev->name, instance, status);
 695                         goto error_iounmap;
 696                 }
 697                 if (!restart &&
 698                   ((status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC)) ||
 699                   time_after(jiffies, start + HZ *
 700                   ((startup_timeout > 60)
 701                     ? (startup_timeout - 60)
 702                     : (startup_timeout / 2))))) {
 703                         if (likely(!aac_src_restart_adapter(dev,
 704                             aac_src_check_health(dev))))
 705                                 start = jiffies;
 706                         ++restart;
 707                 }
 708                 msleep(1);
 709         }
 710         if (restart && aac_commit)
 711                 aac_commit = 1;
 712         /*
 713          *      Fill in the common function dispatch table.
 714          */
 715         dev->a_ops.adapter_interrupt = aac_src_interrupt_adapter;
 716         dev->a_ops.adapter_disable_int = aac_src_disable_interrupt;
 717         dev->a_ops.adapter_enable_int = aac_src_disable_interrupt;
 718         dev->a_ops.adapter_notify = aac_src_notify_adapter;
 719         dev->a_ops.adapter_sync_cmd = src_sync_cmd;
 720         dev->a_ops.adapter_check_health = aac_src_check_health;
 721         dev->a_ops.adapter_restart = aac_src_restart_adapter;
 722         dev->a_ops.adapter_start = aac_src_start_adapter;
 723
 724         /*
 725          *      First clear out all interrupts.  Then enable the one's that we
 726          *      can handle.
 727          */
 728         aac_adapter_comm(dev, AAC_COMM_MESSAGE);
 729         aac_adapter_disable_int(dev);
 730         src_writel(dev, MUnit.ODR_C, 0xffffffff);
 731         aac_adapter_enable_int(dev);
 732
 733         if (aac_init_adapter(dev) == NULL)
 734                 goto error_iounmap;
 735         if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE1)
 736                 goto error_iounmap;
 737
 738         dev->msi = !pci_enable_msi(dev->pdev);
 739
 740         dev->aac_msix[0].vector_no = 0;
 741         dev->aac_msix[0].dev = dev;
 742
 743         if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
 744                         IRQF_SHARED, "aacraid", &(dev->aac_msix[0]))  < 0) {
 745
 746                 if (dev->msi)
 747                         pci_disable_msi(dev->pdev);
 748
 749                 printk(KERN_ERR "%s%d: Interrupt unavailable.\n",
 750                         name, instance);
 751                 goto error_iounmap;
 752         }
 753         dev->dbg_base = pci_resource_start(dev->pdev, 2);
 754         dev->dbg_base_mapped = dev->regs.src.bar1;
 755         dev->dbg_size = AAC_MIN_SRC_BAR1_SIZE;
 756         dev->a_ops.adapter_enable_int = aac_src_enable_interrupt_message;
 757
 758         aac_adapter_enable_int(dev);
 759
 760         if (!dev->sync_mode) {
 761                 /*
 762                  * Tell the adapter that all is configured, and it can
 763                  * start accepting requests
 764                  */
 765                 aac_src_start_adapter(dev);
 766         }
 767         return 0;
 768
 769 error_iounmap:
 770
 771         return -1;
 772 }
 773
 774 /**
 775  *  aac_srcv_init       -       initialize an SRCv card
 776  *  @dev: device to configure
 777  *
 778  */
 779
 780 int aac_srcv_init(struct aac_dev *dev)
 781 {
 782         unsigned long start;
 783         unsigned long status;
 784         int restart = 0;
 785         int instance = dev->id;
 786         const char *name = dev->name;
 787
 788         dev->a_ops.adapter_ioremap = aac_srcv_ioremap;
 789         dev->a_ops.adapter_comm = aac_src_select_comm;
 790
 791         dev->base_size = AAC_MIN_SRCV_BAR0_SIZE;
 792         if (aac_adapter_ioremap(dev, dev->base_size)) {
 793                 printk(KERN_WARNING "%s: unable to map adapter.\n", name);
 794                 goto error_iounmap;
 795         }
 796
 797         /* Failure to reset here is an option ... */
 798         dev->a_ops.adapter_sync_cmd = src_sync_cmd;
 799         dev->a_ops.adapter_enable_int = aac_src_disable_interrupt;
 800         if ((aac_reset_devices || reset_devices) &&
 801                 !aac_src_restart_adapter(dev, 0))
 802                 ++restart;
 803         /*
 804          *      Check to see if flash update is running.
 805          *      Wait for the adapter to be up and running. Wait up to 5 minutes
 806          */
 807         status = src_readl(dev, MUnit.OMR);
 808         if (status & FLASH_UPD_PENDING) {
 809                 start = jiffies;
 810                 do {
 811                         status = src_readl(dev, MUnit.OMR);
 812                         if (time_after(jiffies, start+HZ*FWUPD_TIMEOUT)) {
 813                                 printk(KERN_ERR "%s%d: adapter flash update failed.\n",
 814                                         dev->name, instance);
 815                                 goto error_iounmap;
 816                         }
 817                 } while (!(status & FLASH_UPD_SUCCESS) &&
 818                          !(status & FLASH_UPD_FAILED));
 819                 /* Delay 10 seconds.
 820                  * Because right now FW is doing a soft reset,
 821                  * do not read scratch pad register at this time
 822                  */
 823                 ssleep(10);
 824         }
 825         /*
 826          *      Check to see if the board panic'd while booting.
 827          */
 828         status = src_readl(dev, MUnit.OMR);
 829         if (status & KERNEL_PANIC) {
 830                 if (aac_src_restart_adapter(dev, aac_src_check_health(dev)))
 831                         goto error_iounmap;
 832                 ++restart;
 833         }
 834         /*
 835          *      Check to see if the board failed any self tests.
 836          */
 837         status = src_readl(dev, MUnit.OMR);
 838         if (status & SELF_TEST_FAILED) {
 839                 printk(KERN_ERR "%s%d: adapter self-test failed.\n", dev->name, instance);
 840                 goto error_iounmap;
 841         }
 842         /*
 843          *      Check to see if the monitor panic'd while booting.
 844          */
 845         if (status & MONITOR_PANIC) {
 846                 printk(KERN_ERR "%s%d: adapter monitor panic.\n", dev->name, instance);
 847                 goto error_iounmap;
 848         }
 849         start = jiffies;
 850         /*
 851          *      Wait for the adapter to be up and running. Wait up to 3 minutes
 852          */
 853         while (!((status = src_readl(dev, MUnit.OMR)) &
 854                 KERNEL_UP_AND_RUNNING) ||
 855                 status == 0xffffffff) {
 856                 if ((restart &&
 857                   (status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC))) ||
 858                   time_after(jiffies, start+HZ*startup_timeout)) {
 859                         printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n",
 860                                         dev->name, instance, status);
 861                         goto error_iounmap;
 862                 }
 863                 if (!restart &&
 864                   ((status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC)) ||
 865                   time_after(jiffies, start + HZ *
 866                   ((startup_timeout > 60)
 867                     ? (startup_timeout - 60)
 868                     : (startup_timeout / 2))))) {
 869                         if (likely(!aac_src_restart_adapter(dev, aac_src_check_health(dev))))
 870                                 start = jiffies;
 871                         ++restart;
 872                 }
 873                 msleep(1);
 874         }
 875         if (restart && aac_commit)
 876                 aac_commit = 1;
 877         /*
 878          *      Fill in the common function dispatch table.
 879          */
 880         dev->a_ops.adapter_interrupt = aac_src_interrupt_adapter;
 881         dev->a_ops.adapter_disable_int = aac_src_disable_interrupt;
 882         dev->a_ops.adapter_enable_int = aac_src_disable_interrupt;
 883         dev->a_ops.adapter_notify = aac_src_notify_adapter;
 884         dev->a_ops.adapter_sync_cmd = src_sync_cmd;
 885         dev->a_ops.adapter_check_health = aac_src_check_health;
 886         dev->a_ops.adapter_restart = aac_src_restart_adapter;
 887         dev->a_ops.adapter_start = aac_src_start_adapter;
 888
 889         /*
 890          *      First clear out all interrupts.  Then enable the one's that we
 891          *      can handle.
 892          */
 893         aac_adapter_comm(dev, AAC_COMM_MESSAGE);
 894         aac_adapter_disable_int(dev);
 895         src_writel(dev, MUnit.ODR_C, 0xffffffff);
 896         aac_adapter_enable_int(dev);
 897
 898         if (aac_init_adapter(dev) == NULL)
 899                 goto error_iounmap;
 900         if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE2)
 901                 goto error_iounmap;
 902         if (dev->msi_enabled)
 903                 aac_src_access_devreg(dev, AAC_ENABLE_MSIX);
 904
 905         if (aac_acquire_irq(dev))
 906                 goto error_iounmap;
 907
 908         dev->dbg_base = dev->base_start;
 909         dev->dbg_base_mapped = dev->base;
 910         dev->dbg_size = dev->base_size;
 911         dev->a_ops.adapter_enable_int = aac_src_enable_interrupt_message;
 912
 913         aac_adapter_enable_int(dev);
 914
 915         if (!dev->sync_mode) {
 916                 /*
 917                  * Tell the adapter that all is configured, and it can
 918                  * start accepting requests
 919                  */
 920                 aac_src_start_adapter(dev);
 921         }
 922         return 0;
 923
 924 error_iounmap:
 925
 926         return -1;
 927 }
 928
 929 void aac_src_access_devreg(struct aac_dev *dev, int mode)
 930 {
 931         u_int32_t val;
 932
 933         switch (mode) {
 934         case AAC_ENABLE_INTERRUPT:
 935                 src_writel(dev,
 936                            MUnit.OIMR,
 937                            dev->OIMR = (dev->msi_enabled ?
 938                                         AAC_INT_ENABLE_TYPE1_MSIX :
 939                                         AAC_INT_ENABLE_TYPE1_INTX));
 940                 break;
 941
 942         case AAC_DISABLE_INTERRUPT:
 943                 src_writel(dev,
 944                            MUnit.OIMR,
 945                            dev->OIMR = AAC_INT_DISABLE_ALL);
 946                 break;
 947
 948         case AAC_ENABLE_MSIX:
 949                 /* set bit 6 */
 950                 val = src_readl(dev, MUnit.IDR);
 951                 val |= 0x40;
 952                 src_writel(dev,  MUnit.IDR, val);
 953                 src_readl(dev, MUnit.IDR);
 954                 /* unmask int. */
 955                 val = PMC_ALL_INTERRUPT_BITS;
 956                 src_writel(dev, MUnit.IOAR, val);
 957                 val = src_readl(dev, MUnit.OIMR);
 958                 src_writel(dev,
 959                            MUnit.OIMR,
 960                            val & (~(PMC_GLOBAL_INT_BIT2 | PMC_GLOBAL_INT_BIT0)));
 961                 break;
 962
 963         case AAC_DISABLE_MSIX:
 964                 /* reset bit 6 */
 965                 val = src_readl(dev, MUnit.IDR);
 966                 val &= ~0x40;
 967                 src_writel(dev, MUnit.IDR, val);
 968                 src_readl(dev, MUnit.IDR);
 969                 break;
 970
 971         case AAC_CLEAR_AIF_BIT:
 972                 /* set bit 5 */
 973                 val = src_readl(dev, MUnit.IDR);
 974                 val |= 0x20;
 975                 src_writel(dev, MUnit.IDR, val);
 976                 src_readl(dev, MUnit.IDR);
 977                 break;
 978
 979         case AAC_CLEAR_SYNC_BIT:
 980                 /* set bit 4 */
 981                 val = src_readl(dev, MUnit.IDR);
 982                 val |= 0x10;
 983                 src_writel(dev, MUnit.IDR, val);
 984                 src_readl(dev, MUnit.IDR);
 985                 break;
 986
 987         case AAC_ENABLE_INTX:
 988                 /* set bit 7 */
 989                 val = src_readl(dev, MUnit.IDR);
 990                 val |= 0x80;
 991                 src_writel(dev, MUnit.IDR, val);
 992                 src_readl(dev, MUnit.IDR);
 993                 /* unmask int. */
 994                 val = PMC_ALL_INTERRUPT_BITS;
 995                 src_writel(dev, MUnit.IOAR, val);
 996                 src_readl(dev, MUnit.IOAR);
 997                 val = src_readl(dev, MUnit.OIMR);
 998                 src_writel(dev, MUnit.OIMR,
 999                                 val & (~(PMC_GLOBAL_INT_BIT2)));
1000                 break;
1001
1002         default:
1003                 break;
1004         }
1005 }
1006
1007 static int aac_src_get_sync_status(struct aac_dev *dev)
1008 {
1009
1010         int val;
1011
1012         if (dev->msi_enabled)
1013                 val = src_readl(dev, MUnit.ODR_MSI) & 0x1000 ? 1 : 0;
1014         else
1015                 val = src_readl(dev, MUnit.ODR_R) >> SRC_ODR_SHIFT;
1016
1017         return val;
1018 }