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/*
* bmm_lib.h
*
* Buffer Management Module
*
* User level BMM Defines/Globals/Functions
*
* Li Li (lea.li@marvell.com)
*(C) Copyright 2007 Marvell International Ltd.
* All Rights Reserved
*/
#if !defined (__BMM_LIB_H__)
#define __BMM_LIB_H__
#define BMM_MINOR (94)
typedef struct {
unsigned long input; /* the starting address of the block of memory */
unsigned long output; /* the starting address of the block of memory */
unsigned long length; /* the length of the block of memory */
unsigned long arg; /* the arg of cmd */
} ioctl_arg_t;
#define BMEM_IOCTL_MAGIC 'G'
/* ioctl commands */
#define BMM_MALLOC _IOWR(BMEM_IOCTL_MAGIC, 0, ioctl_arg_t)
#define BMM_FREE _IOWR(BMEM_IOCTL_MAGIC, 1, ioctl_arg_t)
#define BMM_GET_VIRT_ADDR _IOWR(BMEM_IOCTL_MAGIC, 2, ioctl_arg_t)
#define BMM_GET_PHYS_ADDR _IOWR(BMEM_IOCTL_MAGIC, 3, ioctl_arg_t)
#define BMM_GET_MEM_ATTR _IOWR(BMEM_IOCTL_MAGIC, 4, ioctl_arg_t)
#define BMM_SET_MEM_ATTR _IOWR(BMEM_IOCTL_MAGIC, 5, ioctl_arg_t)
#define BMM_GET_MEM_SIZE _IOWR(BMEM_IOCTL_MAGIC, 6, ioctl_arg_t)
#define BMM_GET_TOTAL_SPACE _IOWR(BMEM_IOCTL_MAGIC, 7, ioctl_arg_t)
#define BMM_GET_FREE_SPACE _IOWR(BMEM_IOCTL_MAGIC, 8, ioctl_arg_t)
#define BMM_FLUSH_CACHE _IOWR(BMEM_IOCTL_MAGIC, 9, ioctl_arg_t)
#define BMM_DMA_MEMCPY _IOWR(BMEM_IOCTL_MAGIC, 10, ioctl_arg_t)
#define BMM_DMA_SYNC _IOWR(BMEM_IOCTL_MAGIC, 11, ioctl_arg_t)
#define BMM_CONSISTENT_SYNC _IOWR(BMEM_IOCTL_MAGIC, 12, ioctl_arg_t)
#define BMM_DUMP _IOWR(BMEM_IOCTL_MAGIC, 13, ioctl_arg_t)
#define BMM_GET_ALLOCATED_SPACE _IOWR(BMEM_IOCTL_MAGIC, 14, ioctl_arg_t)
#define BMM_GET_KERN_PHYS_ADDR _IOWR(BMEM_IOCTL_MAGIC, 15, ioctl_arg_t)
#define BMM_SYNC_USER _IOWR(BMEM_IOCTL_MAGIC, 16, ioctl_arg_t)
/* ioctl arguments: memory attributes */
#define BMM_ATTR_DEFAULT (0) /* cacheable bufferable */
#define BMM_ATTR_WRITECOMBINE (1 << 0) /* non-cacheable & bufferable */
#define BMM_ATTR_NONCACHED (1 << 1) /* non-cacheable & non-bufferable */
/* Note: extra attributes below are not supported yet! */
#define BMM_ATTR_HUGE_PAGE (1 << 2) /* 64KB page size */
#define BMM_ATTR_WRITETHROUGH (1 << 3) /* implies L1 Cacheable */
#define BMM_ATTR_L2_CACHEABLE (1 << 4) /* implies L1 Cacheable */
/* obsolete */
#define BMM_ATTR_NONBUFFERABLE (1 << 5) /* non-bufferable */
#define BMM_ATTR_NONCACHEABLE (1 << 6) /* non-cacheable */
/* ioctl arguments: cache flush direction */
#define BMM_DMA_BIDIRECTIONAL (0) /* DMA_BIDIRECTIONAL */
#define BMM_DMA_TO_DEVICE (1) /* DMA_TO_DEVICE */
#define BMM_DMA_FROM_DEVICE (2) /* DMA_FROM_DEVICE */
#define BMM_DMA_NONE (3) /* DMA_NONE */
#define BMM_DEVICE_FILE "/dev/bmm"
#if defined (__cplusplus)
extern "C" {
#endif
int bmm_init();
void bmm_exit();
void *bmm_malloc(unsigned long size, int attr);
void bmm_free(void *vaddr);
void *bmm_attach(void *paddr, unsigned long len);
void bmm_detach(void *vaddr, unsigned long len);
void *bmm_get_vaddr(void *paddr);
void *bmm_get_paddr(void *vaddr);
void *bmm_get_kern_paddr(void *vaddr, unsigned long size);
int bmm_get_mem_attr(void *vaddr);
int bmm_set_mem_attr(void *vaddr, int attr); /* Not supported yet */
unsigned long bmm_get_mem_size(void *vaddr);
unsigned long bmm_get_total_space();
unsigned long bmm_get_free_space();
unsigned long bmm_get_allocated_space();
void bmm_flush_cache(void *vaddr, int dir);
void *bmm_dma_memcpy(void *dest, const void *src, size_t n); /* Obsolete */
void bmm_dma_sync(); /* Obsolete */
void bmm_flush_cache_range(void *start, size_t size, int direction);
void bmm_flush_user(void *start, long size, int direction);
void bmm_dump(); /* for debugging */
#if defined (__cplusplus)
}
#endif
#endif /* __BMM_LIB_H__ */
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