90 lines
3.1 KiB
C
90 lines
3.1 KiB
C
/*
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* Copyright(c) 2015, 2016 Intel Corporation.
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*
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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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* 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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* BSD LICENSE
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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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*/
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#include <linux/device.h>
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#include <linux/wait.h>
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#include "common.h"
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#include "iowait.h"
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#include "user_exp_rcv.h"
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extern uint extended_psn;
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enum pkt_q_sdma_state {
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SDMA_PKT_Q_ACTIVE,
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SDMA_PKT_Q_DEFERRED,
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};
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struct hfi1_user_sdma_pkt_q {
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struct list_head list;
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unsigned ctxt;
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unsigned subctxt;
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u16 n_max_reqs;
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atomic_t n_reqs;
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u16 reqidx;
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struct hfi1_devdata *dd;
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struct kmem_cache *txreq_cache;
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struct user_sdma_request *reqs;
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unsigned long *req_in_use;
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struct iowait busy;
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enum pkt_q_sdma_state state;
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wait_queue_head_t wait;
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unsigned long unpinned;
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struct mmu_rb_handler *handler;
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atomic_t n_locked;
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struct mm_struct *mm;
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};
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struct hfi1_user_sdma_comp_q {
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u16 nentries;
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struct hfi1_sdma_comp_entry *comps;
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};
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int hfi1_user_sdma_alloc_queues(struct hfi1_ctxtdata *, struct file *);
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int hfi1_user_sdma_free_queues(struct hfi1_filedata *);
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int hfi1_user_sdma_process_request(struct file *, struct iovec *, unsigned long,
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unsigned long *);
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