FreeBSD/Linux Kernel Cross Reference
sys/compat/linuxkpi/common/include/linux/dmapool.h

     /*-
      * Copyright (c) 2010 Isilon Systems, Inc.
      * Copyright (c) 2010 iX Systems, Inc.
      * Copyright (c) 2010 Panasas, Inc.
      * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice unmodified, this list of conditions, and the following
     *    disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    #ifndef _LINUXKPI_LINUX_DMAPOOL_H_
    #define _LINUXKPI_LINUX_DMAPOOL_H_
    
    #include <linux/types.h>
    #include <linux/io.h>
    #include <linux/scatterlist.h>
    #include <linux/device.h>
    #include <linux/slab.h>
    
    struct dma_pool;
    struct dma_pool *linux_dma_pool_create(char *name, struct device *dev,
        size_t size, size_t align, size_t boundary);
    void linux_dma_pool_destroy(struct dma_pool *pool);
    void lkpi_dmam_pool_destroy(struct device *, void *);
    void *linux_dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags,
        dma_addr_t *handle);
    void linux_dma_pool_free(struct dma_pool *pool, void *vaddr,
        dma_addr_t dma_addr);
    
    static inline struct dma_pool *
    dma_pool_create(char *name, struct device *dev, size_t size,
        size_t align, size_t boundary)
    {
    
            return (linux_dma_pool_create(name, dev, size, align, boundary));
    }
    
    static inline struct dma_pool *
    dmam_pool_create(/* const */ char *name, struct device *dev, size_t size,
        size_t align, size_t boundary)
    {
            struct dma_pool **pp;
    
            pp = devres_alloc(lkpi_dmam_pool_destroy, sizeof(*pp), GFP_KERNEL);
            if (pp == NULL)
                    return (NULL);
            *pp = linux_dma_pool_create(name, dev, size, align, boundary);
            if (*pp == NULL) {
                    devres_free(pp);
                    return (NULL);
            }
    
            devres_add(dev, pp);
            return (*pp);
    }
    
    static inline void
    dma_pool_destroy(struct dma_pool *pool)
    {
    
            linux_dma_pool_destroy(pool);
    }
    
    static inline void *
    dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags, dma_addr_t *handle)
    {
    
            return (linux_dma_pool_alloc(pool, mem_flags, handle));
    }
    
    static inline void *
    dma_pool_zalloc(struct dma_pool *pool, gfp_t mem_flags, dma_addr_t *handle)
    {
    
            return (dma_pool_alloc(pool, mem_flags | __GFP_ZERO, handle));
    }
    
    static inline void
    dma_pool_free(struct dma_pool *pool, void *vaddr, dma_addr_t dma_addr)
   {
   
           linux_dma_pool_free(pool, vaddr, dma_addr);
   }
   
   #endif /* _LINUXKPI_LINUX_DMAPOOL_H_ */

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