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Commit b92a7568 authored by Dennis Dalessandro's avatar Dennis Dalessandro Committed by Doug Ledford
Browse files

IB/rdmavt: Move MR datastructures into rvt 



This patch adds the MR datastructures based on hfi1 into rvt. For now the
data structures are defined in include/rdma/rdma_vt.h but once all MR
functionality has been moved from the drivers into rvt these should move to
rdmavt/mr.h

Reviewed-by: default avatarIra Weiny <ira.weiny@intel.com>
Reviewed-by: default avatarDean Luick <dean.luick@intel.com>
Reviewed-by: default avatarMike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: default avatarDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 8cf4020b

include/rdma/rdma_vt.h

+53 −0
Original line number Diff line number Diff line
@@ -55,6 +55,56 @@ 


#include "ib_verbs.h"



/*

 * For Memory Regions. This stuff should probably be moved into rdmavt/mr.h once

 * drivers no longer need access to the MR directly.

 */



/*

 * A segment is a linear region of low physical memory.

 * Used by the verbs layer.

 */

struct rvt_seg {

	void *vaddr;

	size_t length;

};



/* The number of rvt_segs that fit in a page. */

#define RVT_SEGSZ     (PAGE_SIZE / sizeof(struct rvt_seg))



struct rvt_segarray {

	struct rvt_seg segs[RVT_SEGSZ];

};



struct rvt_mregion {

	struct ib_pd *pd;       /* shares refcnt of ibmr.pd */

	u64 user_base;          /* User's address for this region */

	u64 iova;               /* IB start address of this region */

	size_t length;

	u32 lkey;

	u32 offset;             /* offset (bytes) to start of region */

	int access_flags;

	u32 max_segs;           /* number of rvt_segs in all the arrays */

	u32 mapsz;              /* size of the map array */

	u8  page_shift;         /* 0 - non unform/non powerof2 sizes */

	u8  lkey_published;     /* in global table */

	struct completion comp; /* complete when refcount goes to zero */

	atomic_t refcount;

	struct rvt_segarray *map[0];    /* the segments */

};



#define RVT_MAX_LKEY_TABLE_BITS 23



struct rvt_lkey_table {

	spinlock_t lock; /* protect changes in this struct */

	u32 next;               /* next unused index (speeds search) */

	u32 gen;                /* generation count */

	u32 max;                /* size of the table */

	struct rvt_mregion __rcu **table;

};



/* End Memmory Region */



/*

 * Things that are driver specific, module parameters in hfi1 and qib

 */
@@ -119,6 +169,9 @@ struct rvt_dev_info { 
	/* Driver specific properties */

	struct rvt_driver_params dparms;



	struct rvt_mregion __rcu *dma_mr;

	struct rvt_lkey_table lkey_table;



	/* PKey Table goes here */



	/*