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0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  *  Adaptec AAC series RAID controller driver
0004  *  (c) Copyright 2001 Red Hat Inc.
0005  *
0006  * based on the old aacraid driver that is..
0007  * Adaptec aacraid device driver for Linux.
0008  *
0009  * Copyright (c) 2000-2010 Adaptec, Inc.
0010  *               2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
0011  *               2016-2017 Microsemi Corp. (aacraid@microsemi.com)
0012  *
0013  * Module Name:
0014  *  comminit.c
0015  *
0016  * Abstract: This supports the initialization of the host adapter commuication interface.
0017  *    This is a platform dependent module for the pci cyclone board.
0018  */
0019 
0020 #include <linux/kernel.h>
0021 #include <linux/init.h>
0022 #include <linux/types.h>
0023 #include <linux/pci.h>
0024 #include <linux/spinlock.h>
0025 #include <linux/slab.h>
0026 #include <linux/blkdev.h>
0027 #include <linux/delay.h>
0028 #include <linux/completion.h>
0029 #include <linux/mm.h>
0030 #include <scsi/scsi_host.h>
0031 #include <scsi/scsi_device.h>
0032 #include <scsi/scsi_cmnd.h>
0033 
0034 #include "aacraid.h"
0035 
0036 struct aac_common aac_config = {
0037     .irq_mod = 1
0038 };
0039 
0040 static inline int aac_is_msix_mode(struct aac_dev *dev)
0041 {
0042     u32 status = 0;
0043 
0044     if (aac_is_src(dev))
0045         status = src_readl(dev, MUnit.OMR);
0046     return (status & AAC_INT_MODE_MSIX);
0047 }
0048 
0049 static inline void aac_change_to_intx(struct aac_dev *dev)
0050 {
0051     aac_src_access_devreg(dev, AAC_DISABLE_MSIX);
0052     aac_src_access_devreg(dev, AAC_ENABLE_INTX);
0053 }
0054 
0055 static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign)
0056 {
0057     unsigned char *base;
0058     unsigned long size, align;
0059     const unsigned long fibsize = dev->max_fib_size;
0060     const unsigned long printfbufsiz = 256;
0061     unsigned long host_rrq_size, aac_init_size;
0062     union aac_init *init;
0063     dma_addr_t phys;
0064     unsigned long aac_max_hostphysmempages;
0065 
0066     if ((dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) ||
0067         (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) ||
0068         (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 &&
0069         !dev->sa_firmware)) {
0070         host_rrq_size =
0071             (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB)
0072                 * sizeof(u32);
0073         aac_init_size = sizeof(union aac_init);
0074     } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 &&
0075         dev->sa_firmware) {
0076         host_rrq_size = (dev->scsi_host_ptr->can_queue
0077             + AAC_NUM_MGT_FIB) * sizeof(u32)  * AAC_MAX_MSIX;
0078         aac_init_size = sizeof(union aac_init) +
0079             (AAC_MAX_HRRQ - 1) * sizeof(struct _rrq);
0080     } else {
0081         host_rrq_size = 0;
0082         aac_init_size = sizeof(union aac_init);
0083     }
0084     size = fibsize + aac_init_size + commsize + commalign +
0085             printfbufsiz + host_rrq_size;
0086 
0087     base = dma_alloc_coherent(&dev->pdev->dev, size, &phys, GFP_KERNEL);
0088     if (base == NULL) {
0089         printk(KERN_ERR "aacraid: unable to create mapping.\n");
0090         return 0;
0091     }
0092 
0093     dev->comm_addr = (void *)base;
0094     dev->comm_phys = phys;
0095     dev->comm_size = size;
0096 
0097     if ((dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) ||
0098         (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) ||
0099         (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3)) {
0100         dev->host_rrq = (u32 *)(base + fibsize);
0101         dev->host_rrq_pa = phys + fibsize;
0102         memset(dev->host_rrq, 0, host_rrq_size);
0103     }
0104 
0105     dev->init = (union aac_init *)(base + fibsize + host_rrq_size);
0106     dev->init_pa = phys + fibsize + host_rrq_size;
0107 
0108     init = dev->init;
0109 
0110     if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3) {
0111         int i;
0112         u64 addr;
0113 
0114         init->r8.init_struct_revision =
0115             cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_8);
0116         init->r8.init_flags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
0117                     INITFLAGS_DRIVER_USES_UTC_TIME |
0118                     INITFLAGS_DRIVER_SUPPORTS_PM);
0119         init->r8.init_flags |=
0120                 cpu_to_le32(INITFLAGS_DRIVER_SUPPORTS_HBA_MODE);
0121         init->r8.rr_queue_count = cpu_to_le32(dev->max_msix);
0122         init->r8.max_io_size =
0123             cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
0124         init->r8.max_num_aif = init->r8.reserved1 =
0125             init->r8.reserved2 = 0;
0126 
0127         for (i = 0; i < dev->max_msix; i++) {
0128             addr = (u64)dev->host_rrq_pa + dev->vector_cap * i *
0129                     sizeof(u32);
0130             init->r8.rrq[i].host_addr_high = cpu_to_le32(
0131                         upper_32_bits(addr));
0132             init->r8.rrq[i].host_addr_low = cpu_to_le32(
0133                         lower_32_bits(addr));
0134             init->r8.rrq[i].msix_id = i;
0135             init->r8.rrq[i].element_count = cpu_to_le16(
0136                     (u16)dev->vector_cap);
0137             init->r8.rrq[i].comp_thresh =
0138                     init->r8.rrq[i].unused = 0;
0139         }
0140 
0141         pr_warn("aacraid: Comm Interface type3 enabled\n");
0142     } else {
0143         init->r7.init_struct_revision =
0144             cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION);
0145         if (dev->max_fib_size != sizeof(struct hw_fib))
0146             init->r7.init_struct_revision =
0147                 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4);
0148         init->r7.no_of_msix_vectors = cpu_to_le32(SA_MINIPORT_REVISION);
0149         init->r7.fsrev = cpu_to_le32(dev->fsrev);
0150 
0151         /*
0152          *  Adapter Fibs are the first thing allocated so that they
0153          *  start page aligned
0154          */
0155         dev->aif_base_va = (struct hw_fib *)base;
0156 
0157         init->r7.adapter_fibs_virtual_address = 0;
0158         init->r7.adapter_fibs_physical_address = cpu_to_le32((u32)phys);
0159         init->r7.adapter_fibs_size = cpu_to_le32(fibsize);
0160         init->r7.adapter_fib_align = cpu_to_le32(sizeof(struct hw_fib));
0161 
0162         /*
0163          * number of 4k pages of host physical memory. The aacraid fw
0164          * needs this number to be less than 4gb worth of pages. New
0165          * firmware doesn't have any issues with the mapping system, but
0166          * older Firmware did, and had *troubles* dealing with the math
0167          * overloading past 32 bits, thus we must limit this field.
0168          */
0169         aac_max_hostphysmempages =
0170                 dma_get_required_mask(&dev->pdev->dev) >> 12;
0171         if (aac_max_hostphysmempages < AAC_MAX_HOSTPHYSMEMPAGES)
0172             init->r7.host_phys_mem_pages =
0173                     cpu_to_le32(aac_max_hostphysmempages);
0174         else
0175             init->r7.host_phys_mem_pages =
0176                     cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES);
0177 
0178         init->r7.init_flags =
0179             cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME |
0180             INITFLAGS_DRIVER_SUPPORTS_PM);
0181         init->r7.max_io_commands =
0182             cpu_to_le32(dev->scsi_host_ptr->can_queue +
0183                     AAC_NUM_MGT_FIB);
0184         init->r7.max_io_size =
0185             cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
0186         init->r7.max_fib_size = cpu_to_le32(dev->max_fib_size);
0187         init->r7.max_num_aif = cpu_to_le32(dev->max_num_aif);
0188 
0189         if (dev->comm_interface == AAC_COMM_MESSAGE) {
0190             init->r7.init_flags |=
0191                 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED);
0192             pr_warn("aacraid: Comm Interface enabled\n");
0193         } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) {
0194             init->r7.init_struct_revision =
0195                 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_6);
0196             init->r7.init_flags |=
0197                 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
0198                 INITFLAGS_NEW_COMM_TYPE1_SUPPORTED |
0199                 INITFLAGS_FAST_JBOD_SUPPORTED);
0200             init->r7.host_rrq_addr_high =
0201                 cpu_to_le32(upper_32_bits(dev->host_rrq_pa));
0202             init->r7.host_rrq_addr_low =
0203                 cpu_to_le32(lower_32_bits(dev->host_rrq_pa));
0204             pr_warn("aacraid: Comm Interface type1 enabled\n");
0205         } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
0206             init->r7.init_struct_revision =
0207                 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_7);
0208             init->r7.init_flags |=
0209                 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
0210                 INITFLAGS_NEW_COMM_TYPE2_SUPPORTED |
0211                 INITFLAGS_FAST_JBOD_SUPPORTED);
0212             init->r7.host_rrq_addr_high =
0213                 cpu_to_le32(upper_32_bits(dev->host_rrq_pa));
0214             init->r7.host_rrq_addr_low =
0215                 cpu_to_le32(lower_32_bits(dev->host_rrq_pa));
0216             init->r7.no_of_msix_vectors =
0217                 cpu_to_le32(dev->max_msix);
0218             /* must be the COMM_PREFERRED_SETTINGS values */
0219             pr_warn("aacraid: Comm Interface type2 enabled\n");
0220         }
0221     }
0222 
0223     /*
0224      * Increment the base address by the amount already used
0225      */
0226     base = base + fibsize + host_rrq_size + aac_init_size;
0227     phys = (dma_addr_t)((ulong)phys + fibsize + host_rrq_size +
0228             aac_init_size);
0229 
0230     /*
0231      *  Align the beginning of Headers to commalign
0232      */
0233     align = (commalign - ((uintptr_t)(base) & (commalign - 1)));
0234     base = base + align;
0235     phys = phys + align;
0236     /*
0237      *  Fill in addresses of the Comm Area Headers and Queues
0238      */
0239     *commaddr = base;
0240     if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3)
0241         init->r7.comm_header_address = cpu_to_le32((u32)phys);
0242     /*
0243      *  Increment the base address by the size of the CommArea
0244      */
0245     base = base + commsize;
0246     phys = phys + commsize;
0247     /*
0248      *   Place the Printf buffer area after the Fast I/O comm area.
0249      */
0250     dev->printfbuf = (void *)base;
0251     if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3) {
0252         init->r7.printfbuf = cpu_to_le32(phys);
0253         init->r7.printfbufsiz = cpu_to_le32(printfbufsiz);
0254     }
0255     memset(base, 0, printfbufsiz);
0256     return 1;
0257 }
0258 
0259 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize)
0260 {
0261     atomic_set(&q->numpending, 0);
0262     q->dev = dev;
0263     init_waitqueue_head(&q->cmdready);
0264     INIT_LIST_HEAD(&q->cmdq);
0265     init_waitqueue_head(&q->qfull);
0266     spin_lock_init(&q->lockdata);
0267     q->lock = &q->lockdata;
0268     q->headers.producer = (__le32 *)mem;
0269     q->headers.consumer = (__le32 *)(mem+1);
0270     *(q->headers.producer) = cpu_to_le32(qsize);
0271     *(q->headers.consumer) = cpu_to_le32(qsize);
0272     q->entries = qsize;
0273 }
0274 
0275 static bool wait_for_io_iter(struct scsi_cmnd *cmd, void *data)
0276 {
0277     int *active = data;
0278 
0279     if (aac_priv(cmd)->owner == AAC_OWNER_FIRMWARE)
0280         *active = *active + 1;
0281     return true;
0282 }
0283 static void aac_wait_for_io_completion(struct aac_dev *aac)
0284 {
0285     int i = 0, active;
0286 
0287     for (i = 60; i; --i) {
0288 
0289         active = 0;
0290         scsi_host_busy_iter(aac->scsi_host_ptr,
0291                     wait_for_io_iter, &active);
0292         /*
0293          * We can exit If all the commands are complete
0294          */
0295         if (active == 0)
0296             break;
0297         dev_info(&aac->pdev->dev,
0298              "Wait for %d commands to complete\n", active);
0299         ssleep(1);
0300     }
0301     if (active)
0302         dev_err(&aac->pdev->dev,
0303             "%d outstanding commands during shutdown\n", active);
0304 }
0305 
0306 /**
0307  *  aac_send_shutdown       -   shutdown an adapter
0308  *  @dev: Adapter to shutdown
0309  *
0310  *  This routine will send a VM_CloseAll (shutdown) request to the adapter.
0311  */
0312 
0313 int aac_send_shutdown(struct aac_dev * dev)
0314 {
0315     struct fib * fibctx;
0316     struct aac_close *cmd;
0317     int status = 0;
0318 
0319     if (aac_adapter_check_health(dev))
0320         return status;
0321 
0322     if (!dev->adapter_shutdown) {
0323         mutex_lock(&dev->ioctl_mutex);
0324         dev->adapter_shutdown = 1;
0325         mutex_unlock(&dev->ioctl_mutex);
0326     }
0327 
0328     aac_wait_for_io_completion(dev);
0329 
0330     fibctx = aac_fib_alloc(dev);
0331     if (!fibctx)
0332         return -ENOMEM;
0333     aac_fib_init(fibctx);
0334 
0335     cmd = (struct aac_close *) fib_data(fibctx);
0336     cmd->command = cpu_to_le32(VM_CloseAll);
0337     cmd->cid = cpu_to_le32(0xfffffffe);
0338 
0339     status = aac_fib_send(ContainerCommand,
0340               fibctx,
0341               sizeof(struct aac_close),
0342               FsaNormal,
0343               -2 /* Timeout silently */, 1,
0344               NULL, NULL);
0345 
0346     if (status >= 0)
0347         aac_fib_complete(fibctx);
0348     /* FIB should be freed only after getting the response from the F/W */
0349     if (status != -ERESTARTSYS)
0350         aac_fib_free(fibctx);
0351     if (aac_is_src(dev) &&
0352          dev->msi_enabled)
0353         aac_set_intx_mode(dev);
0354     return status;
0355 }
0356 
0357 /**
0358  *  aac_comm_init   -   Initialise FSA data structures
0359  *  @dev:   Adapter to initialise
0360  *
0361  *  Initializes the data structures that are required for the FSA commuication
0362  *  interface to operate. 
0363  *  Returns
0364  *      1 - if we were able to init the commuication interface.
0365  *      0 - If there were errors initing. This is a fatal error.
0366  */
0367  
0368 static int aac_comm_init(struct aac_dev * dev)
0369 {
0370     unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2;
0371     unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES;
0372     u32 *headers;
0373     struct aac_entry * queues;
0374     unsigned long size;
0375     struct aac_queue_block * comm = dev->queues;
0376     /*
0377      *  Now allocate and initialize the zone structures used as our 
0378      *  pool of FIB context records.  The size of the zone is based
0379      *  on the system memory size.  We also initialize the mutex used
0380      *  to protect the zone.
0381      */
0382     spin_lock_init(&dev->fib_lock);
0383 
0384     /*
0385      *  Allocate the physically contiguous space for the commuication
0386      *  queue headers. 
0387      */
0388 
0389     size = hdrsize + queuesize;
0390 
0391     if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT))
0392         return -ENOMEM;
0393 
0394     queues = (struct aac_entry *)(((ulong)headers) + hdrsize);
0395 
0396     /* Adapter to Host normal priority Command queue */ 
0397     comm->queue[HostNormCmdQueue].base = queues;
0398     aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES);
0399     queues += HOST_NORM_CMD_ENTRIES;
0400     headers += 2;
0401 
0402     /* Adapter to Host high priority command queue */
0403     comm->queue[HostHighCmdQueue].base = queues;
0404     aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES);
0405     
0406     queues += HOST_HIGH_CMD_ENTRIES;
0407     headers +=2;
0408 
0409     /* Host to adapter normal priority command queue */
0410     comm->queue[AdapNormCmdQueue].base = queues;
0411     aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES);
0412     
0413     queues += ADAP_NORM_CMD_ENTRIES;
0414     headers += 2;
0415 
0416     /* host to adapter high priority command queue */
0417     comm->queue[AdapHighCmdQueue].base = queues;
0418     aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES);
0419     
0420     queues += ADAP_HIGH_CMD_ENTRIES;
0421     headers += 2;
0422 
0423     /* adapter to host normal priority response queue */
0424     comm->queue[HostNormRespQueue].base = queues;
0425     aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES);
0426     queues += HOST_NORM_RESP_ENTRIES;
0427     headers += 2;
0428 
0429     /* adapter to host high priority response queue */
0430     comm->queue[HostHighRespQueue].base = queues;
0431     aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES);
0432    
0433     queues += HOST_HIGH_RESP_ENTRIES;
0434     headers += 2;
0435 
0436     /* host to adapter normal priority response queue */
0437     comm->queue[AdapNormRespQueue].base = queues;
0438     aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES);
0439 
0440     queues += ADAP_NORM_RESP_ENTRIES;
0441     headers += 2;
0442     
0443     /* host to adapter high priority response queue */ 
0444     comm->queue[AdapHighRespQueue].base = queues;
0445     aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES);
0446 
0447     comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock;
0448     comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock;
0449     comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock;
0450     comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock;
0451 
0452     return 0;
0453 }
0454 
0455 void aac_define_int_mode(struct aac_dev *dev)
0456 {
0457     int i, msi_count, min_msix;
0458 
0459     msi_count = i = 0;
0460     /* max. vectors from GET_COMM_PREFERRED_SETTINGS */
0461     if (dev->max_msix == 0 ||
0462         dev->pdev->device == PMC_DEVICE_S6 ||
0463         dev->sync_mode) {
0464         dev->max_msix = 1;
0465         dev->vector_cap =
0466             dev->scsi_host_ptr->can_queue +
0467             AAC_NUM_MGT_FIB;
0468         return;
0469     }
0470 
0471     /* Don't bother allocating more MSI-X vectors than cpus */
0472     msi_count = min(dev->max_msix,
0473         (unsigned int)num_online_cpus());
0474 
0475     dev->max_msix = msi_count;
0476 
0477     if (msi_count > AAC_MAX_MSIX)
0478         msi_count = AAC_MAX_MSIX;
0479 
0480     if (msi_count > 1 &&
0481         pci_find_capability(dev->pdev, PCI_CAP_ID_MSIX)) {
0482         min_msix = 2;
0483         i = pci_alloc_irq_vectors(dev->pdev,
0484                       min_msix, msi_count,
0485                       PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
0486         if (i > 0) {
0487             dev->msi_enabled = 1;
0488             msi_count = i;
0489         } else {
0490             dev->msi_enabled = 0;
0491             dev_err(&dev->pdev->dev,
0492             "MSIX not supported!! Will try INTX 0x%x.\n", i);
0493         }
0494     }
0495 
0496     if (!dev->msi_enabled)
0497         dev->max_msix = msi_count = 1;
0498     else {
0499         if (dev->max_msix > msi_count)
0500             dev->max_msix = msi_count;
0501     }
0502     if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 && dev->sa_firmware)
0503         dev->vector_cap = dev->scsi_host_ptr->can_queue +
0504                 AAC_NUM_MGT_FIB;
0505     else
0506         dev->vector_cap = (dev->scsi_host_ptr->can_queue +
0507                 AAC_NUM_MGT_FIB) / msi_count;
0508 
0509 }
0510 struct aac_dev *aac_init_adapter(struct aac_dev *dev)
0511 {
0512     u32 status[5];
0513     struct Scsi_Host * host = dev->scsi_host_ptr;
0514     extern int aac_sync_mode;
0515 
0516     /*
0517      *  Check the preferred comm settings, defaults from template.
0518      */
0519     dev->management_fib_count = 0;
0520     spin_lock_init(&dev->manage_lock);
0521     spin_lock_init(&dev->sync_lock);
0522     spin_lock_init(&dev->iq_lock);
0523     dev->max_fib_size = sizeof(struct hw_fib);
0524     dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size
0525         - sizeof(struct aac_fibhdr)
0526         - sizeof(struct aac_write) + sizeof(struct sgentry))
0527             / sizeof(struct sgentry);
0528     dev->comm_interface = AAC_COMM_PRODUCER;
0529     dev->raw_io_interface = dev->raw_io_64 = 0;
0530 
0531 
0532     /*
0533      * Enable INTX mode, if not done already Enabled
0534      */
0535     if (aac_is_msix_mode(dev)) {
0536         aac_change_to_intx(dev);
0537         dev_info(&dev->pdev->dev, "Changed firmware to INTX mode");
0538     }
0539 
0540     if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
0541         0, 0, 0, 0, 0, 0,
0542         status+0, status+1, status+2, status+3, status+4)) &&
0543         (status[0] == 0x00000001)) {
0544         dev->doorbell_mask = status[3];
0545         if (status[1] & AAC_OPT_NEW_COMM_64)
0546             dev->raw_io_64 = 1;
0547         dev->sync_mode = aac_sync_mode;
0548         if (dev->a_ops.adapter_comm &&
0549             (status[1] & AAC_OPT_NEW_COMM)) {
0550             dev->comm_interface = AAC_COMM_MESSAGE;
0551             dev->raw_io_interface = 1;
0552             if ((status[1] & AAC_OPT_NEW_COMM_TYPE1)) {
0553                 /* driver supports TYPE1 (Tupelo) */
0554                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE1;
0555             } else if (status[1] & AAC_OPT_NEW_COMM_TYPE2) {
0556                 /* driver supports TYPE2 (Denali, Yosemite) */
0557                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
0558             } else if (status[1] & AAC_OPT_NEW_COMM_TYPE3) {
0559                 /* driver supports TYPE3 (Yosemite, Thor) */
0560                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE3;
0561             } else if (status[1] & AAC_OPT_NEW_COMM_TYPE4) {
0562                 /* not supported TYPE - switch to sync. mode */
0563                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
0564                 dev->sync_mode = 1;
0565             }
0566         }
0567         if ((status[1] & le32_to_cpu(AAC_OPT_EXTENDED)) &&
0568             (status[4] & le32_to_cpu(AAC_EXTOPT_SA_FIRMWARE)))
0569             dev->sa_firmware = 1;
0570         else
0571             dev->sa_firmware = 0;
0572 
0573         if (status[4] & le32_to_cpu(AAC_EXTOPT_SOFT_RESET))
0574             dev->soft_reset_support = 1;
0575         else
0576             dev->soft_reset_support = 0;
0577 
0578         if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
0579             (status[2] > dev->base_size)) {
0580             aac_adapter_ioremap(dev, 0);
0581             dev->base_size = status[2];
0582             if (aac_adapter_ioremap(dev, status[2])) {
0583                 /* remap failed, go back ... */
0584                 dev->comm_interface = AAC_COMM_PRODUCER;
0585                 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) {
0586                     printk(KERN_WARNING
0587                       "aacraid: unable to map adapter.\n");
0588                     return NULL;
0589                 }
0590             }
0591         }
0592     }
0593     dev->max_msix = 0;
0594     dev->msi_enabled = 0;
0595     dev->adapter_shutdown = 0;
0596     if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS,
0597       0, 0, 0, 0, 0, 0,
0598       status+0, status+1, status+2, status+3, status+4))
0599      && (status[0] == 0x00000001)) {
0600         /*
0601          *  status[1] >> 16     maximum command size in KB
0602          *  status[1] & 0xFFFF  maximum FIB size
0603          *  status[2] >> 16     maximum SG elements to driver
0604          *  status[2] & 0xFFFF  maximum SG elements from driver
0605          *  status[3] & 0xFFFF  maximum number FIBs outstanding
0606          */
0607         host->max_sectors = (status[1] >> 16) << 1;
0608         /* Multiple of 32 for PMC */
0609         dev->max_fib_size = status[1] & 0xFFE0;
0610         host->sg_tablesize = status[2] >> 16;
0611         dev->sg_tablesize = status[2] & 0xFFFF;
0612         if (aac_is_src(dev)) {
0613             if (host->can_queue > (status[3] >> 16) -
0614                     AAC_NUM_MGT_FIB)
0615                 host->can_queue = (status[3] >> 16) -
0616                     AAC_NUM_MGT_FIB;
0617         } else if (host->can_queue > (status[3] & 0xFFFF) -
0618                 AAC_NUM_MGT_FIB)
0619             host->can_queue = (status[3] & 0xFFFF) -
0620                 AAC_NUM_MGT_FIB;
0621 
0622         dev->max_num_aif = status[4] & 0xFFFF;
0623     }
0624     if (numacb > 0) {
0625         if (numacb < host->can_queue)
0626             host->can_queue = numacb;
0627         else
0628             pr_warn("numacb=%d ignored\n", numacb);
0629     }
0630 
0631     if (aac_is_src(dev))
0632         aac_define_int_mode(dev);
0633     /*
0634      *  Ok now init the communication subsystem
0635      */
0636 
0637     dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL);
0638     if (dev->queues == NULL) {
0639         printk(KERN_ERR "Error could not allocate comm region.\n");
0640         return NULL;
0641     }
0642 
0643     if (aac_comm_init(dev)<0){
0644         kfree(dev->queues);
0645         return NULL;
0646     }
0647     /*
0648      *  Initialize the list of fibs
0649      */
0650     if (aac_fib_setup(dev) < 0) {
0651         kfree(dev->queues);
0652         return NULL;
0653     }
0654         
0655     INIT_LIST_HEAD(&dev->fib_list);
0656     INIT_LIST_HEAD(&dev->sync_fib_list);
0657 
0658     return dev;
0659 }
0660
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