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kernel-ark/drivers/scsi/aacraid/comminit.c
Raghava Aditya Renukunta 216ced02fa scsi: aacraid: Move code to wait for IO completion to shutdown func 
Ideally driver needs to wait for IO to be submitted or responded to before
shutdown.

Move code to wait for IO completion into shutdown path

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03 23:26:42 -05:00

671 lines
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/*
* Adaptec AAC series RAID controller driver
* (c) Copyright 2001 Red Hat Inc.
*
* based on the old aacraid driver that is..
* Adaptec aacraid device driver for Linux.
*
* Copyright (c) 2000-2010 Adaptec, Inc.
* 2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
* 2016-2017 Microsemi Corp. (aacraid@microsemi.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Module Name:
* comminit.c
*
* Abstract: This supports the initialization of the host adapter commuication interface.
* This is a platform dependent module for the pci cyclone board.
*
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/completion.h>
#include <linux/mm.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_cmnd.h>
#include "aacraid.h"
struct aac_common aac_config = {
.irq_mod = 1
};
static inline int aac_is_msix_mode(struct aac_dev *dev)
{
u32 status = 0;
if (aac_is_src(dev))
status = src_readl(dev, MUnit.OMR);
return (status & AAC_INT_MODE_MSIX);
}
static inline void aac_change_to_intx(struct aac_dev *dev)
{
aac_src_access_devreg(dev, AAC_DISABLE_MSIX);
aac_src_access_devreg(dev, AAC_ENABLE_INTX);
}
static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign)
{
unsigned char *base;
unsigned long size, align;
const unsigned long fibsize = dev->max_fib_size;
const unsigned long printfbufsiz = 256;
unsigned long host_rrq_size, aac_init_size;
union aac_init *init;
dma_addr_t phys;
unsigned long aac_max_hostphysmempages;
if ((dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) ||
(dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) ||
(dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 &&
!dev->sa_firmware)) {
host_rrq_size =
(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB)
* sizeof(u32);
aac_init_size = sizeof(union aac_init);
} else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 &&
dev->sa_firmware) {
host_rrq_size = (dev->scsi_host_ptr->can_queue
+ AAC_NUM_MGT_FIB) * sizeof(u32) * AAC_MAX_MSIX;
aac_init_size = sizeof(union aac_init) +
(AAC_MAX_HRRQ - 1) * sizeof(struct _rrq);
} else {
host_rrq_size = 0;
aac_init_size = sizeof(union aac_init);
}
size = fibsize + aac_init_size + commsize + commalign +
printfbufsiz + host_rrq_size;
base = dma_alloc_coherent(&dev->pdev->dev, size, &phys, GFP_KERNEL);
if (base == NULL) {
printk(KERN_ERR "aacraid: unable to create mapping.\n");
return 0;
}
dev->comm_addr = (void *)base;
dev->comm_phys = phys;
dev->comm_size = size;
if ((dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) ||
(dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) ||
(dev->comm_interface == AAC_COMM_MESSAGE_TYPE3)) {
dev->host_rrq = (u32 *)(base + fibsize);
dev->host_rrq_pa = phys + fibsize;
memset(dev->host_rrq, 0, host_rrq_size);
}
dev->init = (union aac_init *)(base + fibsize + host_rrq_size);
dev->init_pa = phys + fibsize + host_rrq_size;
init = dev->init;
if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3) {
int i;
u64 addr;
init->r8.init_struct_revision =
cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_8);
init->r8.init_flags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
INITFLAGS_DRIVER_USES_UTC_TIME |
INITFLAGS_DRIVER_SUPPORTS_PM);
init->r8.init_flags |=
cpu_to_le32(INITFLAGS_DRIVER_SUPPORTS_HBA_MODE);
init->r8.rr_queue_count = cpu_to_le32(dev->max_msix);
init->r8.max_io_size =
cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
init->r8.max_num_aif = init->r8.reserved1 =
init->r8.reserved2 = 0;
for (i = 0; i < dev->max_msix; i++) {
addr = (u64)dev->host_rrq_pa + dev->vector_cap * i *
sizeof(u32);
init->r8.rrq[i].host_addr_high = cpu_to_le32(
upper_32_bits(addr));
init->r8.rrq[i].host_addr_low = cpu_to_le32(
lower_32_bits(addr));
init->r8.rrq[i].msix_id = i;
init->r8.rrq[i].element_count = cpu_to_le16(
(u16)dev->vector_cap);
init->r8.rrq[i].comp_thresh =
init->r8.rrq[i].unused = 0;
}
pr_warn("aacraid: Comm Interface type3 enabled\n");
} else {
init->r7.init_struct_revision =
cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION);
if (dev->max_fib_size != sizeof(struct hw_fib))
init->r7.init_struct_revision =
cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4);
init->r7.no_of_msix_vectors = cpu_to_le32(SA_MINIPORT_REVISION);
init->r7.fsrev = cpu_to_le32(dev->fsrev);
/*
* Adapter Fibs are the first thing allocated so that they
* start page aligned
*/
dev->aif_base_va = (struct hw_fib *)base;
init->r7.adapter_fibs_virtual_address = 0;
init->r7.adapter_fibs_physical_address = cpu_to_le32((u32)phys);
init->r7.adapter_fibs_size = cpu_to_le32(fibsize);
init->r7.adapter_fib_align = cpu_to_le32(sizeof(struct hw_fib));
/*
* number of 4k pages of host physical memory. The aacraid fw
* needs this number to be less than 4gb worth of pages. New
* firmware doesn't have any issues with the mapping system, but
* older Firmware did, and had *troubles* dealing with the math
* overloading past 32 bits, thus we must limit this field.
*/
aac_max_hostphysmempages =
dma_get_required_mask(&dev->pdev->dev) >> 12;
if (aac_max_hostphysmempages < AAC_MAX_HOSTPHYSMEMPAGES)
init->r7.host_phys_mem_pages =
cpu_to_le32(aac_max_hostphysmempages);
else
init->r7.host_phys_mem_pages =
cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES);
init->r7.init_flags =
cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME |
INITFLAGS_DRIVER_SUPPORTS_PM);
init->r7.max_io_commands =
cpu_to_le32(dev->scsi_host_ptr->can_queue +
AAC_NUM_MGT_FIB);
init->r7.max_io_size =
cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
init->r7.max_fib_size = cpu_to_le32(dev->max_fib_size);
init->r7.max_num_aif = cpu_to_le32(dev->max_num_aif);
if (dev->comm_interface == AAC_COMM_MESSAGE) {
init->r7.init_flags |=
cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED);
pr_warn("aacraid: Comm Interface enabled\n");
} else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) {
init->r7.init_struct_revision =
cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_6);
init->r7.init_flags |=
cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
INITFLAGS_NEW_COMM_TYPE1_SUPPORTED |
INITFLAGS_FAST_JBOD_SUPPORTED);
init->r7.host_rrq_addr_high =
cpu_to_le32(upper_32_bits(dev->host_rrq_pa));
init->r7.host_rrq_addr_low =
cpu_to_le32(lower_32_bits(dev->host_rrq_pa));
pr_warn("aacraid: Comm Interface type1 enabled\n");
} else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
init->r7.init_struct_revision =
cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_7);
init->r7.init_flags |=
cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
INITFLAGS_NEW_COMM_TYPE2_SUPPORTED |
INITFLAGS_FAST_JBOD_SUPPORTED);
init->r7.host_rrq_addr_high =
cpu_to_le32(upper_32_bits(dev->host_rrq_pa));
init->r7.host_rrq_addr_low =
cpu_to_le32(lower_32_bits(dev->host_rrq_pa));
init->r7.no_of_msix_vectors =
cpu_to_le32(dev->max_msix);
/* must be the COMM_PREFERRED_SETTINGS values */
pr_warn("aacraid: Comm Interface type2 enabled\n");
}
}
/*
* Increment the base address by the amount already used
*/
base = base + fibsize + host_rrq_size + aac_init_size;
phys = (dma_addr_t)((ulong)phys + fibsize + host_rrq_size +
aac_init_size);
/*
* Align the beginning of Headers to commalign
*/
align = (commalign - ((uintptr_t)(base) & (commalign - 1)));
base = base + align;
phys = phys + align;
/*
* Fill in addresses of the Comm Area Headers and Queues
*/
*commaddr = base;
if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3)
init->r7.comm_header_address = cpu_to_le32((u32)phys);
/*
* Increment the base address by the size of the CommArea
*/
base = base + commsize;
phys = phys + commsize;
/*
* Place the Printf buffer area after the Fast I/O comm area.
*/
dev->printfbuf = (void *)base;
if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3) {
init->r7.printfbuf = cpu_to_le32(phys);
init->r7.printfbufsiz = cpu_to_le32(printfbufsiz);
}
memset(base, 0, printfbufsiz);
return 1;
}
static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize)
{
atomic_set(&q->numpending, 0);
q->dev = dev;
init_waitqueue_head(&q->cmdready);
INIT_LIST_HEAD(&q->cmdq);
init_waitqueue_head(&q->qfull);
spin_lock_init(&q->lockdata);
q->lock = &q->lockdata;
q->headers.producer = (__le32 *)mem;
q->headers.consumer = (__le32 *)(mem+1);
*(q->headers.producer) = cpu_to_le32(qsize);
*(q->headers.consumer) = cpu_to_le32(qsize);
q->entries = qsize;
}
static void aac_wait_for_io_completion(struct aac_dev *aac)
{
unsigned long flagv = 0;
int i = 0;
for (i = 60; i; --i) {
struct scsi_device *dev;
struct scsi_cmnd *command;
int active = 0;
__shost_for_each_device(dev, aac->scsi_host_ptr) {
spin_lock_irqsave(&dev->list_lock, flagv);
list_for_each_entry(command, &dev->cmd_list, list) {
if (command->SCp.phase == AAC_OWNER_FIRMWARE) {
active++;
break;
}
}
spin_unlock_irqrestore(&dev->list_lock, flagv);
if (active)
break;
}
/*
* We can exit If all the commands are complete
*/
if (active == 0)
break;
ssleep(1);
}
}
/**
* aac_send_shutdown - shutdown an adapter
* @dev: Adapter to shutdown
*
* This routine will send a VM_CloseAll (shutdown) request to the adapter.
*/
int aac_send_shutdown(struct aac_dev * dev)
{
struct fib * fibctx;
struct aac_close *cmd;
int status = 0;
if (aac_adapter_check_health(dev))
return status;
if (!dev->adapter_shutdown) {
mutex_lock(&dev->ioctl_mutex);
dev->adapter_shutdown = 1;
mutex_unlock(&dev->ioctl_mutex);
}
aac_wait_for_io_completion(dev);
fibctx = aac_fib_alloc(dev);
if (!fibctx)
return -ENOMEM;
aac_fib_init(fibctx);
cmd = (struct aac_close *) fib_data(fibctx);
cmd->command = cpu_to_le32(VM_CloseAll);
cmd->cid = cpu_to_le32(0xfffffffe);
status = aac_fib_send(ContainerCommand,
fibctx,
sizeof(struct aac_close),
FsaNormal,
-2 /* Timeout silently */, 1,
NULL, NULL);
if (status >= 0)
aac_fib_complete(fibctx);
/* FIB should be freed only after getting the response from the F/W */
if (status != -ERESTARTSYS)
aac_fib_free(fibctx);
if (aac_is_src(dev) &&
dev->msi_enabled)
aac_set_intx_mode(dev);
return status;
}
/**
* aac_comm_init - Initialise FSA data structures
* @dev: Adapter to initialise
*
* Initializes the data structures that are required for the FSA commuication
* interface to operate.
* Returns
* 1 - if we were able to init the commuication interface.
* 0 - If there were errors initing. This is a fatal error.
*/
static int aac_comm_init(struct aac_dev * dev)
{
unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2;
unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES;
u32 *headers;
struct aac_entry * queues;
unsigned long size;
struct aac_queue_block * comm = dev->queues;
/*
* Now allocate and initialize the zone structures used as our
* pool of FIB context records. The size of the zone is based
* on the system memory size. We also initialize the mutex used
* to protect the zone.
*/
spin_lock_init(&dev->fib_lock);
/*
* Allocate the physically contiguous space for the commuication
* queue headers.
*/
size = hdrsize + queuesize;
if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT))
return -ENOMEM;
queues = (struct aac_entry *)(((ulong)headers) + hdrsize);
/* Adapter to Host normal priority Command queue */
comm->queue[HostNormCmdQueue].base = queues;
aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES);
queues += HOST_NORM_CMD_ENTRIES;
headers += 2;
/* Adapter to Host high priority command queue */
comm->queue[HostHighCmdQueue].base = queues;
aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES);
queues += HOST_HIGH_CMD_ENTRIES;
headers +=2;
/* Host to adapter normal priority command queue */
comm->queue[AdapNormCmdQueue].base = queues;
aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES);
queues += ADAP_NORM_CMD_ENTRIES;
headers += 2;
/* host to adapter high priority command queue */
comm->queue[AdapHighCmdQueue].base = queues;
aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES);
queues += ADAP_HIGH_CMD_ENTRIES;
headers += 2;
/* adapter to host normal priority response queue */
comm->queue[HostNormRespQueue].base = queues;
aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES);
queues += HOST_NORM_RESP_ENTRIES;
headers += 2;
/* adapter to host high priority response queue */
comm->queue[HostHighRespQueue].base = queues;
aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES);
queues += HOST_HIGH_RESP_ENTRIES;
headers += 2;
/* host to adapter normal priority response queue */
comm->queue[AdapNormRespQueue].base = queues;
aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES);
queues += ADAP_NORM_RESP_ENTRIES;
headers += 2;
/* host to adapter high priority response queue */
comm->queue[AdapHighRespQueue].base = queues;
aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES);
comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock;
comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock;
comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock;
comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock;
return 0;
}
void aac_define_int_mode(struct aac_dev *dev)
{
int i, msi_count, min_msix;
msi_count = i = 0;
/* max. vectors from GET_COMM_PREFERRED_SETTINGS */
if (dev->max_msix == 0 ||
dev->pdev->device == PMC_DEVICE_S6 ||
dev->sync_mode) {
dev->max_msix = 1;
dev->vector_cap =
dev->scsi_host_ptr->can_queue +
AAC_NUM_MGT_FIB;
return;
}
/* Don't bother allocating more MSI-X vectors than cpus */
msi_count = min(dev->max_msix,
(unsigned int)num_online_cpus());
dev->max_msix = msi_count;
if (msi_count > AAC_MAX_MSIX)
msi_count = AAC_MAX_MSIX;
if (msi_count > 1 &&
pci_find_capability(dev->pdev, PCI_CAP_ID_MSIX)) {
min_msix = 2;
i = pci_alloc_irq_vectors(dev->pdev,
min_msix, msi_count,
PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
if (i > 0) {
dev->msi_enabled = 1;
msi_count = i;
} else {
dev->msi_enabled = 0;
dev_err(&dev->pdev->dev,
"MSIX not supported!! Will try INTX 0x%x.\n", i);
}
}
if (!dev->msi_enabled)
dev->max_msix = msi_count = 1;
else {
if (dev->max_msix > msi_count)
dev->max_msix = msi_count;
}
if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 && dev->sa_firmware)
dev->vector_cap = dev->scsi_host_ptr->can_queue +
AAC_NUM_MGT_FIB;
else
dev->vector_cap = (dev->scsi_host_ptr->can_queue +
AAC_NUM_MGT_FIB) / msi_count;
}
struct aac_dev *aac_init_adapter(struct aac_dev *dev)
{
u32 status[5];
struct Scsi_Host * host = dev->scsi_host_ptr;
extern int aac_sync_mode;
/*
* Check the preferred comm settings, defaults from template.
*/
dev->management_fib_count = 0;
spin_lock_init(&dev->manage_lock);
spin_lock_init(&dev->sync_lock);
spin_lock_init(&dev->iq_lock);
dev->max_fib_size = sizeof(struct hw_fib);
dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size
- sizeof(struct aac_fibhdr)
- sizeof(struct aac_write) + sizeof(struct sgentry))
/ sizeof(struct sgentry);
dev->comm_interface = AAC_COMM_PRODUCER;
dev->raw_io_interface = dev->raw_io_64 = 0;
/*
* Enable INTX mode, if not done already Enabled
*/
if (aac_is_msix_mode(dev)) {
aac_change_to_intx(dev);
dev_info(&dev->pdev->dev, "Changed firmware to INTX mode");
}
if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
0, 0, 0, 0, 0, 0,
status+0, status+1, status+2, status+3, status+4)) &&
(status[0] == 0x00000001)) {
dev->doorbell_mask = status[3];
if (status[1] & AAC_OPT_NEW_COMM_64)
dev->raw_io_64 = 1;
dev->sync_mode = aac_sync_mode;
if (dev->a_ops.adapter_comm &&
(status[1] & AAC_OPT_NEW_COMM)) {
dev->comm_interface = AAC_COMM_MESSAGE;
dev->raw_io_interface = 1;
if ((status[1] & AAC_OPT_NEW_COMM_TYPE1)) {
/* driver supports TYPE1 (Tupelo) */
dev->comm_interface = AAC_COMM_MESSAGE_TYPE1;
} else if (status[1] & AAC_OPT_NEW_COMM_TYPE2) {
/* driver supports TYPE2 (Denali, Yosemite) */
dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
} else if (status[1] & AAC_OPT_NEW_COMM_TYPE3) {
/* driver supports TYPE3 (Yosemite, Thor) */
dev->comm_interface = AAC_COMM_MESSAGE_TYPE3;
} else if (status[1] & AAC_OPT_NEW_COMM_TYPE4) {
/* not supported TYPE - switch to sync. mode */
dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
dev->sync_mode = 1;
}
}
if ((status[1] & le32_to_cpu(AAC_OPT_EXTENDED)) &&
(status[4] & le32_to_cpu(AAC_EXTOPT_SA_FIRMWARE)))
dev->sa_firmware = 1;
else
dev->sa_firmware = 0;
if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
(status[2] > dev->base_size)) {
aac_adapter_ioremap(dev, 0);
dev->base_size = status[2];
if (aac_adapter_ioremap(dev, status[2])) {
/* remap failed, go back ... */
dev->comm_interface = AAC_COMM_PRODUCER;
if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) {
printk(KERN_WARNING
"aacraid: unable to map adapter.\n");
return NULL;
}
}
}
}
dev->max_msix = 0;
dev->msi_enabled = 0;
dev->adapter_shutdown = 0;
if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS,
0, 0, 0, 0, 0, 0,
status+0, status+1, status+2, status+3, status+4))
&& (status[0] == 0x00000001)) {
/*
* status[1] >> 16 maximum command size in KB
* status[1] & 0xFFFF maximum FIB size
* status[2] >> 16 maximum SG elements to driver
* status[2] & 0xFFFF maximum SG elements from driver
* status[3] & 0xFFFF maximum number FIBs outstanding
*/
host->max_sectors = (status[1] >> 16) << 1;
/* Multiple of 32 for PMC */
dev->max_fib_size = status[1] & 0xFFE0;
host->sg_tablesize = status[2] >> 16;
dev->sg_tablesize = status[2] & 0xFFFF;
if (aac_is_src(dev)) {
if (host->can_queue > (status[3] >> 16) -
AAC_NUM_MGT_FIB)
host->can_queue = (status[3] >> 16) -
AAC_NUM_MGT_FIB;
} else if (host->can_queue > (status[3] & 0xFFFF) -
AAC_NUM_MGT_FIB)
host->can_queue = (status[3] & 0xFFFF) -
AAC_NUM_MGT_FIB;
dev->max_num_aif = status[4] & 0xFFFF;
}
if (numacb > 0) {
if (numacb < host->can_queue)
host->can_queue = numacb;
else
pr_warn("numacb=%d ignored\n", numacb);
}
if (aac_is_src(dev))
aac_define_int_mode(dev);
/*
* Ok now init the communication subsystem
*/
dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL);
if (dev->queues == NULL) {
printk(KERN_ERR "Error could not allocate comm region.\n");
return NULL;
}
if (aac_comm_init(dev)<0){
kfree(dev->queues);
return NULL;
}
/*
* Initialize the list of fibs
*/
if (aac_fib_setup(dev) < 0) {
kfree(dev->queues);
return NULL;
}
INIT_LIST_HEAD(&dev->fib_list);
INIT_LIST_HEAD(&dev->sync_fib_list);
return dev;
}
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