diff options
Diffstat (limited to 'drivers/staging/memrar/memrar-abi')
-rw-r--r-- | drivers/staging/memrar/memrar-abi | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/drivers/staging/memrar/memrar-abi b/drivers/staging/memrar/memrar-abi deleted file mode 100644 index c23fc99..0000000 --- a/drivers/staging/memrar/memrar-abi +++ /dev/null @@ -1,89 +0,0 @@ -What: /dev/memrar -Date: March 2010 -KernelVersion: 2.6.34 -Contact: Eugene Epshteyn <eugene.epshteyn@intel.com> -Description: The Intel Moorestown Restricted Access Region (RAR) - Handler driver exposes an ioctl() based interface that - allows a user to reserve and release blocks of RAR - memory. - - Note: A sysfs based one was not appropriate for the - RAR handler's usage model. - - ========================================================= - ioctl() Requests - ========================================================= - RAR_HANDLER_RESERVE - ------------------- - Description: Reserve RAR block. - Type: struct RAR_block_info - Direction: in/out - Errors: EINVAL (invalid RAR type or size) - ENOMEM (not enough RAR memory) - - RAR_HANDLER_STAT - ---------------- - Description: Get RAR statistics. - Type: struct RAR_stat - Direction: in/out - Errors: EINVAL (invalid RAR type) - - RAR_HANDLER_RELEASE - ------------------- - Description: Release previously reserved RAR block. - Type: 32 bit unsigned integer - (e.g. uint32_t), i.e the RAR "handle". - Direction: in - Errors: EINVAL (invalid RAR handle) - - - ========================================================= - ioctl() Request Parameter Types - ========================================================= - The structures referred to above are defined as - follows: - - /** - * struct RAR_block_info - user space struct that - * describes RAR buffer - * @type: Type of RAR memory (e.g., - * RAR_TYPE_VIDEO or RAR_TYPE_AUDIO) [in] - * @size: Requested size of a block in bytes to - * be reserved in RAR. [in] - * @handle: Handle that can be used to refer to - * reserved block. [out] - * - * This is the basic structure exposed to the user - * space that describes a given RAR buffer. It used - * as the parameter for the RAR_HANDLER_RESERVE ioctl. - * The buffer's underlying bus address is not exposed - * to the user. User space code refers to the buffer - * entirely by "handle". - */ - struct RAR_block_info { - __u32 type; - __u32 size; - __u32 handle; - }; - - /** - * struct RAR_stat - RAR statistics structure - * @type: Type of RAR memory (e.g., - * RAR_TYPE_VIDEO or - * RAR_TYPE_AUDIO) [in] - * @capacity: Total size of RAR memory - * region. [out] - * @largest_block_size: Size of the largest reservable - * block. [out] - * - * This structure is used for RAR_HANDLER_STAT ioctl. - */ - struct RAR_stat { - __u32 type; - __u32 capacity; - __u32 largest_block_size; - }; - - Lastly, the RAR_HANDLER_RELEASE ioctl expects a - "handle" to the RAR block of memory. It is a 32 bit - unsigned integer. |