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dma-buf: rk_heaps: export some APIs to user

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Change-Id: I2afab36157985623c8c54f65ed47e5acd363947e
Signed-off-by: Simon Xue <xxm@rock-chips.com>
This commit is contained in:
Simon Xue
2022-03-15 18:41:39 +08:00
committed by Tao Huang
parent c0669ce10d
commit f092e827b4
3 changed files with 124 additions and 70 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/dma-buf/rk_heaps/rk-dma-heap.c
+7
View File
@@ -143,6 +143,7 @@ int rk_dma_heap_set_dev(struct device *heap_dev)
return 0;
}
EXPORT_SYMBOL_GPL(rk_dma_heap_set_dev);
struct rk_dma_heap *rk_dma_heap_find(const char *name)
{
@@ -159,11 +160,13 @@ struct rk_dma_heap *rk_dma_heap_find(const char *name)
mutex_unlock(&rk_heap_list_lock);
return NULL;
}
EXPORT_SYMBOL_GPL(rk_dma_heap_find);
void rk_dma_heap_buffer_free(struct dma_buf *dmabuf)
{
dma_buf_put(dmabuf);
}
EXPORT_SYMBOL_GPL(rk_dma_heap_buffer_free);
struct dma_buf *rk_dma_heap_buffer_alloc(struct rk_dma_heap *heap, size_t len,
unsigned int fd_flags,
@@ -185,6 +188,7 @@ struct dma_buf *rk_dma_heap_buffer_alloc(struct rk_dma_heap *heap, size_t len,
return heap->ops->allocate(heap, len, fd_flags, heap_flags, name);
}
EXPORT_SYMBOL_GPL(rk_dma_heap_buffer_alloc);
int rk_dma_heap_bufferfd_alloc(struct rk_dma_heap *heap, size_t len,
unsigned int fd_flags,
@@ -208,6 +212,7 @@ int rk_dma_heap_bufferfd_alloc(struct rk_dma_heap *heap, size_t len,
return fd;
}
EXPORT_SYMBOL_GPL(rk_dma_heap_bufferfd_alloc);
struct page *rk_dma_heap_alloc_contig_pages(struct rk_dma_heap *heap,
size_t len, const char *name)
@@ -223,6 +228,7 @@ struct page *rk_dma_heap_alloc_contig_pages(struct rk_dma_heap *heap,
return heap->ops->alloc_contig_pages(heap, len, name);
}
EXPORT_SYMBOL_GPL(rk_dma_heap_alloc_contig_pages);
void rk_dma_heap_free_contig_pages(struct rk_dma_heap *heap,
struct page *pages, size_t len,
@@ -235,6 +241,7 @@ void rk_dma_heap_free_contig_pages(struct rk_dma_heap *heap,
return heap->ops->free_contig_pages(heap, pages, len, name);
}
EXPORT_SYMBOL_GPL(rk_dma_heap_free_contig_pages);
void rk_dma_heap_total_inc(struct rk_dma_heap *heap, size_t len)
{
drivers/dma-buf/rk_heaps/rk-dma-heap.h
-68
View File
@@ -168,74 +168,6 @@ struct rk_dma_heap *rk_dma_heap_add(const struct rk_dma_heap_export_info *exp_in
*/
void rk_dma_heap_put(struct rk_dma_heap *heap);
/**
* rk_dma_heap_set_dev - set heap dev dma param
* @heap: DMA-Heap to retrieve private data for
*
* Returns:
* Zero on success, ERR_PTR(-errno) on error
*/
int rk_dma_heap_set_dev(struct device *heap_dev);
/**
* rk_dma_heap_find - Returns the registered dma_heap with the specified name
* @name: Name of the heap to find
*
* NOTE: dma_heaps returned from this function MUST be released
* using rk_dma_heap_put() when the user is done.
*/
struct rk_dma_heap *rk_dma_heap_find(const char *name);
/**
* rk_dma_heap_buffer_alloc - Allocate dma-buf from a dma_heap
* @heap: dma_heap to allocate from
* @len: size to allocate
* @fd_flags: flags to set on returned dma-buf fd
* @heap_flags: flags to pass to the dma heap
*
* This is for internal dma-buf allocations only.
*/
struct dma_buf *rk_dma_heap_buffer_alloc(struct rk_dma_heap *heap, size_t len,
unsigned int fd_flags,
unsigned int heap_flags,
const char *name);
/** rk_dma_heap_buffer_free - Free dma_buf allocated by rk_dma_heap_buffer_alloc
* @dma_buf: dma_buf to free
*
* This is really only a simple wrapper to dma_buf_put()
*/
void rk_dma_heap_buffer_free(struct dma_buf *dmabuf);
/**
* rk_dma_heap_bufferfd_alloc - Allocate dma-buf fd from a dma_heap
* @heap: dma_heap to allocate from
* @len: size to allocate
* @fd_flags: flags to set on returned dma-buf fd
* @heap_flags: flags to pass to the dma heap
*/
int rk_dma_heap_bufferfd_alloc(struct rk_dma_heap *heap, size_t len,
unsigned int fd_flags,
unsigned int heap_flags,
const char *name);
/**
* rk_dma_heap_alloc_contig_pages - Allocate contiguous pages from a dma_heap
* @heap: dma_heap to allocate from
* @len: size to allocate
* @name: the name who allocate
*/
struct page *rk_dma_heap_alloc_contig_pages(struct rk_dma_heap *heap,
size_t len, const char *name);
/**
* rk_dma_heap_free_contig_pages - Free contiguous pages to a dma_heap
* @heap: dma_heap to free to
* @pages: pages to free to
* @len: size to free
* @name: the name who allocate
*/
void rk_dma_heap_free_contig_pages(struct rk_dma_heap *heap,
struct page *pages, size_t len, const char *name);
/**
* rk_vmap_contig_pfn - Map contiguous pfn to vm area
* @pfn: indicate the first pfn of contig
include/linux/rk-dma-heap.h
+117 -2
View File
@@ -8,15 +8,130 @@
* Author: Simon Xue <xxm@rock-chips.com>
*/
#ifndef _DMA_HEAPS_H
#define _DMA_HEAPS_H
#ifndef _RK_DMA_HEAPS_H_
#define _RK_DMA_HEAPS_H_
#include <linux/dma-buf.h>
struct rk_dma_heap;
#if defined(CONFIG_DMABUF_HEAPS_ROCKCHIP)
int rk_dma_heap_cma_setup(void);
/**
* rk_dma_heap_set_dev - set heap dev dma param
* @heap: DMA-Heap to retrieve private data for
*
* Returns:
* Zero on success, ERR_PTR(-errno) on error
*/
int rk_dma_heap_set_dev(struct device *heap_dev);
/**
* rk_dma_heap_find - Returns the registered dma_heap with the specified name
* @name: Name of the heap to find
*
* NOTE: dma_heaps returned from this function MUST be released
* using rk_dma_heap_put() when the user is done.
*/
struct rk_dma_heap *rk_dma_heap_find(const char *name);
/** rk_dma_heap_buffer_free - Free dma_buf allocated by rk_dma_heap_buffer_alloc
* @dma_buf: dma_buf to free
*
* This is really only a simple wrapper to dma_buf_put()
*/
void rk_dma_heap_buffer_free(struct dma_buf *dmabuf);
/**
* rk_dma_heap_buffer_alloc - Allocate dma-buf from a dma_heap
* @heap: dma_heap to allocate from
* @len: size to allocate
* @fd_flags: flags to set on returned dma-buf fd
* @heap_flags: flags to pass to the dma heap
*
* This is for internal dma-buf allocations only.
*/
struct dma_buf *rk_dma_heap_buffer_alloc(struct rk_dma_heap *heap, size_t len,
unsigned int fd_flags,
unsigned int heap_flags,
const char *name);
/**
* rk_dma_heap_bufferfd_alloc - Allocate dma-buf fd from a dma_heap
* @heap: dma_heap to allocate from
* @len: size to allocate
* @fd_flags: flags to set on returned dma-buf fd
* @heap_flags: flags to pass to the dma heap
*/
int rk_dma_heap_bufferfd_alloc(struct rk_dma_heap *heap, size_t len,
unsigned int fd_flags,
unsigned int heap_flags,
const char *name);
/**
* rk_dma_heap_alloc_contig_pages - Allocate contiguous pages from a dma_heap
* @heap: dma_heap to allocate from
* @len: size to allocate
* @name: the name who allocate
*/
struct page *rk_dma_heap_alloc_contig_pages(struct rk_dma_heap *heap,
size_t len, const char *name);
/**
* rk_dma_heap_free_contig_pages - Free contiguous pages to a dma_heap
* @heap: dma_heap to free to
* @pages: pages to free to
* @len: size to free
* @name: the name who allocate
*/
void rk_dma_heap_free_contig_pages(struct rk_dma_heap *heap, struct page *pages,
size_t len, const char *name);
#else
static inline int rk_dma_heap_cma_setup(void)
{
return -ENODEV;
}
static inline int rk_dma_heap_set_dev(struct device *heap_dev)
{
return -ENODEV;
}
static inline struct rk_dma_heap *rk_dma_heap_find(const char *name)
{
return NULL;
}
static inline void rk_dma_heap_buffer_free(struct dma_buf *dmabuf)
{
}
static inline struct dma_buf *rk_dma_heap_buffer_alloc(struct rk_dma_heap *heap, size_t len,
unsigned int fd_flags,
unsigned int heap_flags,
const char *name)
{
return NULL;
}
static inline int rk_dma_heap_bufferfd_alloc(struct rk_dma_heap *heap, size_t len,
unsigned int fd_flags,
unsigned int heap_flags,
const char *name)
{
return -ENODEV;
}
static inline struct page *rk_dma_heap_alloc_contig_pages(struct rk_dma_heap *heap,
size_t len, const char *name)
{
return NULL;
}
static inline void rk_dma_heap_free_contig_pages(struct rk_dma_heap *heap, struct page *pages,
size_t len, const char *name)
{
}
#endif
#endif /* _DMA_HEAPS_H */