| /* |
| * |
| * 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 |
| * |
| * Copyright(c) 2015 Intel Corporation. |
| * |
| * 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 |
| * |
| * Copyright(c) 2015 Intel Corporation. |
| * |
| * 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" |
| |
| #define EXP_TID_TIDLEN_MASK 0x7FFULL |
| #define EXP_TID_TIDLEN_SHIFT 0 |
| #define EXP_TID_TIDCTRL_MASK 0x3ULL |
| #define EXP_TID_TIDCTRL_SHIFT 20 |
| #define EXP_TID_TIDIDX_MASK 0x7FFULL |
| #define EXP_TID_TIDIDX_SHIFT 22 |
| #define EXP_TID_GET(tid, field) \ |
| (((tid) >> EXP_TID_TID##field##_SHIFT) & EXP_TID_TID##field##_MASK) |
| |
| extern uint extended_psn; |
| |
| 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; |
| struct iowait busy; |
| unsigned state; |
| }; |
| |
| 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 *); |