1 /* 2 * This file is part of the Chelsio T6 Ethernet driver for Linux. 3 * 4 * Copyright (c) 2017-2018 Chelsio Communications, Inc. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 */ 34 35 #include "cxgb4.h" 36 #include "t4_msg.h" 37 #include "srq.h" 38 39 struct srq_data *t4_init_srq(int srq_size) 40 { 41 struct srq_data *s; 42 43 s = kvzalloc(sizeof(*s), GFP_KERNEL); 44 if (!s) 45 return NULL; 46 47 s->srq_size = srq_size; 48 init_completion(&s->comp); 49 mutex_init(&s->lock); 50 51 return s; 52 } 53 54 void do_srq_table_rpl(struct adapter *adap, 55 const struct cpl_srq_table_rpl *rpl) 56 { 57 unsigned int idx = TID_TID_G(GET_TID(rpl)); 58 struct srq_data *s = adap->srq; 59 struct srq_entry *e; 60 61 if (unlikely(rpl->status != CPL_CONTAINS_READ_RPL)) { 62 dev_err(adap->pdev_dev, 63 "Unexpected SRQ_TABLE_RPL status %u for entry %u\n", 64 rpl->status, idx); 65 goto out; 66 } 67 68 /* Store the read entry */ 69 e = s->entryp; 70 e->valid = 1; 71 e->idx = idx; 72 e->pdid = SRQT_PDID_G(be64_to_cpu(rpl->rsvd_pdid)); 73 e->qlen = SRQT_QLEN_G(be32_to_cpu(rpl->qlen_qbase)); 74 e->qbase = SRQT_QBASE_G(be32_to_cpu(rpl->qlen_qbase)); 75 e->cur_msn = be16_to_cpu(rpl->cur_msn); 76 e->max_msn = be16_to_cpu(rpl->max_msn); 77 out: 78 complete(&s->comp); 79 } 80