mirror of
https://github.com/opnsense/src.git
synced 2026-02-15 16:48:36 -05:00
2afeed13b5
dmam_pool_create() is a "managed" version of dma_pool_create() which will cleanup everything left when the device goes away using the devres framework. For that add an internal cleanup function to be called from devres release. This is used by at least one wireless driver. Sponsored by: The FreeBSD Foundation MFC after: 10 days Reviewed by: hselasky Differential Revision: https://reviews.freebsd.org/D30520
105 lines
3.2 KiB
C
105 lines
3.2 KiB
C
/*-
|
|
* 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 _LINUX_DMAPOOL_H_
|
|
#define _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 /* _LINUX_DMAPOOL_H_ */
|