linux-imx

/*

 *  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) +