Staging: sep: handle the memrar stuff in the headers
Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Cox
Greg Kroah-Hartman
Родитель
62a8c3a32e
Коммит
266aa856f2
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@ -95,6 +95,7 @@ struct RAR_buffer {
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dma_addr_t bus_address;
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};
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#if defined(CONFIG_MRST_RAR_HANDLER)
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/**
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* rar_reserve() - reserve RAR buffers
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* @buffers: array of RAR_buffers where type and size of buffers to
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@ -149,7 +150,25 @@ extern size_t rar_release(struct RAR_buffer *buffers,
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extern size_t rar_handle_to_bus(struct RAR_buffer *buffers,
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size_t count);
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#else
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extern inline size_t rar_reserve(struct RAR_buffer *buffers, size_t count)
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{
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return 0;
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}
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extern inline size_t rar_release(struct RAR_buffer *buffers, size_t count)
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{
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return 0;
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}
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extern inline size_t rar_handle_to_bus(struct RAR_buffer *buffers,
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size_t count)
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{
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return 0;
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}
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#endif /* MRST_RAR_HANDLER */
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#endif /* __KERNEL__ */
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#endif /* _MEMRAR_H */
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@ -59,6 +59,8 @@
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#include <linux/connector.h>
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#include <linux/cn_proc.h>
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#include "../memrar/memrar.h"
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#include "sep_driver_hw_defs.h"
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#include "sep_driver_config.h"
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#include "sep_driver_api.h"
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@ -230,138 +230,5 @@ held by the proccess (struct file) */
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/* the token that defines the data pool pointers address */
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#define SEP_EXT_CACHE_ADDR_VAL_TOKEN 0xBABABABA
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/* rar handler */
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#ifndef CONFIG_MRST_RAR_HANDLER
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/* This stub header is for non Moorestown driver only */
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/*
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* @struct RAR_stat
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*
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* @brief This structure is used for @c RAR_HANDLER_STAT ioctl and for
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* @c RAR_get_stat() user space wrapper function.
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*/
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struct RAR_stat {
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/* Type of RAR memory (e.g., audio vs. video) */
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__u32 type;
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/*
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* Total size of RAR memory region.
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*/
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__u32 capacity;
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/* Size of the largest reservable block. */
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__u32 largest_block_size;
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};
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/*
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* @struct RAR_block_info
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*
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* @brief The argument for the @c RAR_HANDLER_RESERVE @c ioctl.
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*
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*/
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struct RAR_block_info {
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/* Type of RAR memory (e.g., audio vs. video) */
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__u32 type;
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/* Requested size of a block to be reserved in RAR. */
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__u32 size;
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/* Handle that can be used to refer to reserved block. */
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__u32 handle;
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};
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/*
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* @struct RAR_buffer
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*
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* Structure that contains all information related to a given block of
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* memory in RAR. It is generally only used when retrieving bus
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* addresses.
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*
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* @note This structure is used only by RAR-enabled drivers, and is
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* not intended to be exposed to the user space.
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*/
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struct RAR_buffer {
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/* Structure containing base RAR buffer information */
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struct RAR_block_info info;
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/* Buffer bus address */
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__u32 bus_address;
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};
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#define RAR_IOCTL_BASE 0xE0
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/* Reserve RAR block. */
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#define RAR_HANDLER_RESERVE _IOWR(RAR_IOCTL_BASE, 0x00, struct RAR_block_info)
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/* Release previously reserved RAR block. */
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#define RAR_HANDLER_RELEASE _IOW(RAR_IOCTL_BASE, 0x01, __u32)
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/* Get RAR stats. */
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#define RAR_HANDLER_STAT _IOWR(RAR_IOCTL_BASE, 0x02, struct RAR_stat)
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/* -------------------------------------------------------------- */
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/* Kernel Side RAR Handler Interface */
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/* -------------------------------------------------------------- */
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/*
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* @function rar_reserve
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*
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* @brief Reserve RAR buffers.
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*
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* This function will reserve buffers in the restricted access regions
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* of given types.
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*
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* @return Number of successfully reserved buffers.
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* Successful buffer reservations will have the corresponding
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* @c bus_address field set to a non-zero value in the
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* given @a buffers vector.
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*/
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#define rar_reserve(a, b) ((size_t)NULL)
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/*
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* @function rar_release
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*
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* @brief Release RAR buffers retrieved through call to
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* @c rar_reserve() or @c rar_handle_to_bus().
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*
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* This function will release RAR buffers that were retrieved through
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* a call to @c rar_reserve() or @c rar_handle_to_bus() by
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* decrementing the reference count. The RAR buffer will be reclaimed
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* when the reference count drops to zero.
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*
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* @return Number of successfully released buffers.
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* Successful releases will have their handle field set to
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* zero in the given @a buffers vector.
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*/
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#define rar_release(a, b) ((size_t)NULL)
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/*
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* @function rar_handle_to_bus
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*
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* @brief Convert a vector of RAR handles to bus addresses.
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*
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* This function will retrieve the RAR buffer bus addresses, type and
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* size corresponding to the RAR handles provided in the @a buffers
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* vector.
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*
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* @return Number of successfully converted buffers.
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* The bus address will be set to @c 0 for unrecognized
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* handles.
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*
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* @note The reference count for each corresponding buffer in RAR will
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* be incremented. Call @c rar_release() when done with the
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* buffers.
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*/
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#define rar_handle_to_bus(a, b) ((size_t)NULL)
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#else /* using rear memrar */
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#include "../memrar/memrar.h"
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#endif /* MEMRAR */
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#endif /* SEP DRIVER CONFIG */
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