/*
* Copyright(c) 2015 Intel Corporation.
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* BSD LICENSE
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* - Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <linux/slab.h>
#include "mr.h"
/**
* rvt_get_dma_mr - get a DMA memory region
* @pd: protection domain for this memory region
* @acc: 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 dma.c).
*/
struct ib_mr *rvt_get_dma_mr(struct ib_pd *pd, int acc)
{
/*
* Alloc mr and init it.
* Alloc lkey.
*/
return ERR_PTR(-EOPNOTSUPP);
}
/**
* rvt_reg_user_mr - register a userspace memory region
* @pd: protection domain for this memory region
* @start: starting userspace address
* @length: length of region to register
* @mr_access_flags: access flags for this memory region
* @udata: unused by the driver
*
* Returns the memory region on success, otherwise returns an errno.
*/
struct ib_mr *rvt_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
u64 virt_addr, int mr_access_flags,
struct ib_udata *udata)
{
return ERR_PTR(-EOPNOTSUPP);
}
/**
* rvt_dereg_mr - unregister and free a memory region
* @ibmr: the memory region to free
*
* Returns 0 on success.
*
* Note that this is called to free MRs created by rvt_get_dma_mr()
* or rvt_reg_user_mr().
*/
int rvt_dereg_mr(struct ib_mr *ibmr)
{
return -EOPNOTSUPP;
}
/**
* rvt_alloc_mr - Allocate a memory region usable with the
* @pd: protection domain for this memory region
* @mr_type: mem region type
* @max_num_sg: Max number of segments allowed
*
* Return the memory region on success, otherwise return an errno.
*/
struct ib_mr *rvt_alloc_mr(struct ib_pd *pd,
enum ib_mr_type mr_type,
u32 max_num_sg)
{
return ERR_PTR(-EOPNOTSUPP);
}
/**
* rvt_alloc_fmr - allocate a fast memory region
* @pd: the protection domain for this memory region
* @mr_access_flags: access flags for this memory region
* @fmr_attr: fast memory region attributes
*
* Returns the memory region on success, otherwise returns an errno.
*/
struct ib_fmr *rvt_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
struct ib_fmr_attr *fmr_attr)
{
return ERR_PTR(-EOPNOTSUPP);
}
/**
* rvt_map_phys_fmr - set up a fast memory region
* @ibmfr: the fast memory region to set up
* @page_list: the list of pages to associate with the fast memory region
* @list_len: the number of pages to associate with the fast memory region
* @iova: the virtual address of the start of the fast memory region
*
* This may be called from interrupt context.
*/
int rvt_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
int list_len, u64 iova)
{
return -EOPNOTSUPP;
}
/**
* rvt_unmap_fmr - unmap fast memory regions
* @fmr_list: the list of fast memory regions to unmap
*
* Returns 0 on success.
*/
int rvt_unmap_fmr(struct list_head *fmr_list)
{
return -EOPNOTSUPP;
}
/**
* rvt_dealloc_fmr - deallocate a fast memory region
* @ibfmr: the fast memory region to deallocate
*
* Returns 0 on success.
*/
int rvt_dealloc_fmr(struct ib_fmr *ibfmr)
{
return -EOPNOTSUPP;
}
