linux-imx

/*

 * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of version 2 of the GNU General Public License as

 * published by the Free Software Foundation.

 *

 * 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.

 */

#ifndef __ND_H__

#define __ND_H__

#include <linux/libnvdimm.h>

#include <linux/badblocks.h>

#include <linux/blkdev.h>

#include <linux/device.h>

#include <linux/mutex.h>

#include <linux/ndctl.h>

#include <linux/types.h>

#include <linux/nd.h>

#include "label.h"

​

enum {

    /*

     * Limits the maximum number of block apertures a dimm can

     * support and is an input to the geometry/on-disk-format of a

     * BTT instance

     */

    ND_MAX_LANES = 256,

    INT_LBASIZE_ALIGNMENT = 64,

    NVDIMM_IO_ATOMIC = 1,

};

​

struct nvdimm_drvdata {

    struct device *dev;

    int nslabel_size;

    struct nd_cmd_get_config_size nsarea;

    void *data;

    int ns_current, ns_next;

    struct resource dpa;

    struct kref kref;

};

​

struct nd_region_data {

    int ns_count;

    int ns_active;

    unsigned int hints_shift;

    void __iomem *flush_wpq[0];

};

​

static inline void __iomem *ndrd_get_flush_wpq(struct nd_region_data *ndrd,

        int dimm, int hint)

{

    unsigned int num = 1 << ndrd->hints_shift;

    unsigned int mask = num - 1;

​

    return ndrd->flush_wpq[dimm * num + (hint & mask)];

}

​

static inline void ndrd_set_flush_wpq(struct nd_region_data *ndrd, int dimm,

        int hint, void __iomem *flush)