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