ipath_mr.c File Reference

#include <linux/slab.h>
#include <rdma/ib_umem.h>
#include <rdma/ib_pack.h>
#include <rdma/ib_smi.h>
#include "ipath_verbs.h"

Go to the source code of this file.

Data Structures
struct	ipath_fmr

Functions
struct ib_mr *	ipath_get_dma_mr (struct ib_pd *pd, int acc)
struct ib_mr *	ipath_reg_phys_mr (struct ib_pd *pd, struct ib_phys_buf *buffer_list, int num_phys_buf, int acc, u64 *iova_start)
struct ib_mr *	ipath_reg_user_mr (struct ib_pd *pd, u64 start, u64 length, u64 virt_addr, int mr_access_flags, struct ib_udata *udata)
int	ipath_dereg_mr (struct ib_mr *ibmr)
struct ib_fmr *	ipath_alloc_fmr (struct ib_pd *pd, int mr_access_flags, struct ib_fmr_attr *fmr_attr)
int	ipath_map_phys_fmr (struct ib_fmr *ibfmr, u64 *page_list, int list_len, u64 iova)
int	ipath_unmap_fmr (struct list_head *fmr_list)
int	ipath_dealloc_fmr (struct ib_fmr *ibfmr)

Variables
struct ipath_fmr	__attribute__

Function Documentation

struct ib_fmr* ipath_alloc_fmr ( struct ib_pd *  pd, int  mr_access_flags, struct ib_fmr_attr *  fmr_attr  )

read

ipath_alloc_fmr - allocate a fast memory region : the protection domain for this memory region : access flags for this memory region : fast memory region attributes

Returns the memory region on success, otherwise returns an errno.

Definition at line 287 of file ipath_mr.c.

int ipath_dealloc_fmr

(

struct ib_fmr *

ibfmr

)

ipath_dealloc_fmr - deallocate a fast memory region : the fast memory region to deallocate

Returns 0 on success.

Definition at line 419 of file ipath_mr.c.

int ipath_dereg_mr

(

struct ib_mr *

ibmr

)

ipath_dereg_mr - unregister and free a memory region : the memory region to free

Returns 0 on success.

Note that this is called to free MRs created by ipath_get_dma_mr() or ipath_reg_user_mr().

Definition at line 260 of file ipath_mr.c.

struct ib_mr* ipath_get_dma_mr ( struct ib_pd *  pd, int  acc  )

read

ipath_get_dma_mr - get a DMA memory region : protection domain for this memory region : access flags

Returns the memory region on success, otherwise returns an errno. Note that all DMA addresses should be created via the struct ib_dma_mapping_ops functions (see ipath_dma.c).

Definition at line 63 of file ipath_mr.c.

int ipath_map_phys_fmr	(	struct ib_fmr *	ibfmr,
		u64 *	page_list,
		int	list_len,
		u64	iova
	)

ipath_map_phys_fmr - set up a fast memory region : the fast memory region to set up : the list of pages to associate with the fast memory region : the number of pages to associate with the fast memory region : the virtual address of the start of the fast memory region

This may be called from interrupt context.

Definition at line 352 of file ipath_mr.c.

struct ib_mr* ipath_reg_phys_mr ( struct ib_pd *  pd, struct ib_phys_buf *  buffer_list, int  num_phys_buf, int  acc, u64 *  iova_start  )

read

ipath_reg_phys_mr - register a physical memory region : protection domain for this memory region : pointer to the list of physical buffers to register : the number of physical buffers to register : the starting address passed over IB which maps to this MR

Returns the memory region on success, otherwise returns an errno.

Definition at line 132 of file ipath_mr.c.

struct ib_mr* ipath_reg_user_mr ( struct ib_pd *  pd, u64  start, u64  length, u64  virt_addr, int  mr_access_flags, struct ib_udata *  udata  )

read

ipath_reg_user_mr - register a userspace memory region : protection domain for this memory region : starting userspace address : length of region to register : virtual address to use (from HCA's point of view) : access flags for this memory region : unused by the InfiniPath driver

Returns the memory region on success, otherwise returns an errno.

Definition at line 185 of file ipath_mr.c.

int ipath_unmap_fmr

(

struct list_head *

fmr_list

)

ipath_unmap_fmr - unmap fast memory regions : the list of fast memory regions to unmap

Returns 0 on success.

Definition at line 396 of file ipath_mr.c.

Variable Documentation

struct ipath_fmr __attribute__