6389a77596
Remove abstraction for SG building and get rid of callbacks for getting DMA memory mapping. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
101 lines
3.6 KiB
C
101 lines
3.6 KiB
C
/*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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* The full GNU General Public License is included in this distribution
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* in the file called LICENSE.GPL.
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*
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* BSD LICENSE
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/kernel.h>
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#include "sci_util.h"
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#include "sci_environment.h"
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void scic_word_copy_with_swap(
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u32 *destination,
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u32 *source,
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u32 word_count)
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{
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while (word_count--) {
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*destination = SCIC_SWAP_DWORD(*source);
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source++;
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destination++;
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}
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}
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void *scic_request_get_virt_addr(struct scic_sds_request *sci_req, dma_addr_t phys_addr)
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{
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struct isci_request *ireq = sci_object_get_association(sci_req);
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dma_addr_t offset;
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BUG_ON(phys_addr < ireq->request_daddr);
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offset = phys_addr - ireq->request_daddr;
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BUG_ON(offset >= ireq->request_alloc_size);
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return (char *)ireq + offset;
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}
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dma_addr_t scic_io_request_get_dma_addr(struct scic_sds_request *sds_request,
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void *virt_addr)
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{
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struct isci_request *isci_request =
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(struct isci_request *)sci_object_get_association(sds_request);
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char *requested_addr = (char *)virt_addr;
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char *base_addr = (char *)isci_request;
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BUG_ON(requested_addr < base_addr);
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BUG_ON((requested_addr - base_addr) >=
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isci_request->request_alloc_size);
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return isci_request->request_daddr + (requested_addr - base_addr);
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}
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