aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/staging/memrar/memrar-abi
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/staging/memrar/memrar-abi')
-rw-r--r--drivers/staging/memrar/memrar-abi89
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 c23fc996a435..000000000000
--- 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.