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Diffstat (limited to 'arch/arm/mach-bcmring/include/mach/dma.h')
-rw-r--r--arch/arm/mach-bcmring/include/mach/dma.h196
1 files changed, 0 insertions, 196 deletions
diff --git a/arch/arm/mach-bcmring/include/mach/dma.h b/arch/arm/mach-bcmring/include/mach/dma.h
index 1f2c5319c05..72543781207 100644
--- a/arch/arm/mach-bcmring/include/mach/dma.h
+++ b/arch/arm/mach-bcmring/include/mach/dma.h
@@ -26,15 +26,9 @@
/* ---- Include Files ---------------------------------------------------- */
#include <linux/kernel.h>
-#include <linux/wait.h>
#include <linux/semaphore.h>
#include <csp/dmacHw.h>
#include <mach/timer.h>
-#include <linux/scatterlist.h>
-#include <linux/dma-mapping.h>
-#include <linux/mm.h>
-#include <linux/vmalloc.h>
-#include <linux/pagemap.h>
/* ---- Constants and Types ---------------------------------------------- */
@@ -113,78 +107,6 @@ typedef struct {
/****************************************************************************
*
-* The DMA_MemType_t and DMA_MemMap_t are helper structures used to setup
-* DMA chains from a variety of memory sources.
-*
-*****************************************************************************/
-
-#define DMA_MEM_MAP_MIN_SIZE 4096 /* Pages less than this size are better */
- /* off not being DMA'd. */
-
-typedef enum {
- DMA_MEM_TYPE_NONE, /* Not a valid setting */
- DMA_MEM_TYPE_VMALLOC, /* Memory came from vmalloc call */
- DMA_MEM_TYPE_KMALLOC, /* Memory came from kmalloc call */
- DMA_MEM_TYPE_DMA, /* Memory came from dma_alloc_xxx call */
- DMA_MEM_TYPE_USER, /* Memory came from user space. */
-
-} DMA_MemType_t;
-
-/* A segment represents a physically and virtually contiguous chunk of memory. */
-/* i.e. each segment can be DMA'd */
-/* A user of the DMA code will add memory regions. Each region may need to be */
-/* represented by one or more segments. */
-
-typedef struct {
- void *virtAddr; /* Virtual address used for this segment */
- dma_addr_t physAddr; /* Physical address this segment maps to */
- size_t numBytes; /* Size of the segment, in bytes */
-
-} DMA_Segment_t;
-
-/* A region represents a virtually contiguous chunk of memory, which may be */
-/* made up of multiple segments. */
-
-typedef struct {
- DMA_MemType_t memType;
- void *virtAddr;
- size_t numBytes;
-
- /* Each region (virtually contiguous) consists of one or more segments. Each */
- /* segment is virtually and physically contiguous. */
-
- int numSegmentsUsed;
- int numSegmentsAllocated;
- DMA_Segment_t *segment;
-
- /* When a region corresponds to user memory, we need to lock all of the pages */
- /* down before we can figure out the physical addresses. The lockedPage array contains */
- /* the pages that were locked, and which subsequently need to be unlocked once the */
- /* memory is unmapped. */
-
- unsigned numLockedPages;
- struct page **lockedPages;
-
-} DMA_Region_t;
-
-typedef struct {
- int inUse; /* Is this mapping currently being used? */
- struct semaphore lock; /* Acquired when using this structure */
- enum dma_data_direction dir; /* Direction this transfer is intended for */
-
- /* In the event that we're mapping user memory, we need to know which task */
- /* the memory is for, so that we can obtain the correct mm locks. */
-
- struct task_struct *userTask;
-
- int numRegionsUsed;
- int numRegionsAllocated;
- DMA_Region_t *region;
-
-} DMA_MemMap_t;
-
-/****************************************************************************
-*
* The DMA_DeviceAttribute_t contains information which describes a
* particular DMA device (or peripheral).
*
@@ -570,124 +492,6 @@ int dma_alloc_double_dst_descriptors(DMA_Handle_t handle, /* DMA Handle */
/****************************************************************************/
/**
-* Initializes a DMA_MemMap_t data structure
-*/
-/****************************************************************************/
-
-int dma_init_mem_map(DMA_MemMap_t *memMap /* Stores state information about the map */
- );
-
-/****************************************************************************/
-/**
-* Releases any memory currently being held by a memory mapping structure.
-*/
-/****************************************************************************/
-
-int dma_term_mem_map(DMA_MemMap_t *memMap /* Stores state information about the map */
- );
-
-/****************************************************************************/
-/**
-* Looks at a memory address and categorizes it.
-*
-* @return One of the values from the DMA_MemType_t enumeration.
-*/
-/****************************************************************************/
-
-DMA_MemType_t dma_mem_type(void *addr);
-
-/****************************************************************************/
-/**
-* Sets the process (aka userTask) associated with a mem map. This is
-* required if user-mode segments will be added to the mapping.
-*/
-/****************************************************************************/
-
-static inline void dma_mem_map_set_user_task(DMA_MemMap_t *memMap,
- struct task_struct *task)
-{
- memMap->userTask = task;
-}
-
-/****************************************************************************/
-/**
-* Looks at a memory address and determines if we support DMA'ing to/from
-* that type of memory.
-*
-* @return boolean -
-* return value != 0 means dma supported
-* return value == 0 means dma not supported
-*/
-/****************************************************************************/
-
-int dma_mem_supports_dma(void *addr);
-
-/****************************************************************************/
-/**
-* Initializes a memory map for use. Since this function acquires a
-* sempaphore within the memory map, it is VERY important that dma_unmap
-* be called when you're finished using the map.
-*/
-/****************************************************************************/
-
-int dma_map_start(DMA_MemMap_t *memMap, /* Stores state information about the map */
- enum dma_data_direction dir /* Direction that the mapping will be going */
- );
-
-/****************************************************************************/
-/**
-* Adds a segment of memory to a memory map.
-*
-* @return 0 on success, error code otherwise.
-*/
-/****************************************************************************/
-
-int dma_map_add_region(DMA_MemMap_t *memMap, /* Stores state information about the map */
- void *mem, /* Virtual address that we want to get a map of */
- size_t numBytes /* Number of bytes being mapped */
- );
-
-/****************************************************************************/
-/**
-* Creates a descriptor ring from a memory mapping.
-*
-* @return 0 on success, error code otherwise.
-*/
-/****************************************************************************/
-
-int dma_map_create_descriptor_ring(DMA_Device_t dev, /* DMA device (where the ring is stored) */
- DMA_MemMap_t *memMap, /* Memory map that will be used */
- dma_addr_t devPhysAddr /* Physical address of device */
- );
-
-/****************************************************************************/
-/**
-* Maps in a memory region such that it can be used for performing a DMA.
-*
-* @return
-*/
-/****************************************************************************/
-
-int dma_map_mem(DMA_MemMap_t *memMap, /* Stores state information about the map */
- void *addr, /* Virtual address that we want to get a map of */
- size_t count, /* Number of bytes being mapped */
- enum dma_data_direction dir /* Direction that the mapping will be going */
- );
-
-/****************************************************************************/
-/**
-* Maps in a memory region such that it can be used for performing a DMA.
-*
-* @return
-*/
-/****************************************************************************/
-
-int dma_unmap(DMA_MemMap_t *memMap, /* Stores state information about the map */
- int dirtied /* non-zero if any of the pages were modified */
- );
-
-/****************************************************************************/
-/**
* Initiates a transfer when the descriptors have already been setup.
*
* This is a special case, and normally, the dma_transfer_xxx functions should