1 /* 2 * Copyright (c) 2009-2010 Chelsio, Inc. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 #include <linux/slab.h> 33 #include <linux/mman.h> 34 #include <net/sock.h> 35 36 #include "iw_cxgb4.h" 37 38 static void post_qp_event(struct c4iw_dev *dev, struct c4iw_cq *chp, 39 struct c4iw_qp *qhp, 40 struct t4_cqe *err_cqe, 41 enum ib_event_type ib_event) 42 { 43 struct ib_event event; 44 struct c4iw_qp_attributes attrs; 45 unsigned long flag; 46 47 if ((qhp->attr.state == C4IW_QP_STATE_ERROR) || 48 (qhp->attr.state == C4IW_QP_STATE_TERMINATE)) { 49 pr_err("%s AE after RTS - qpid 0x%x opcode %d status 0x%x "\ 50 "type %d wrid.hi 0x%x wrid.lo 0x%x\n", 51 __func__, CQE_QPID(err_cqe), CQE_OPCODE(err_cqe), 52 CQE_STATUS(err_cqe), CQE_TYPE(err_cqe), 53 CQE_WRID_HI(err_cqe), CQE_WRID_LOW(err_cqe)); 54 return; 55 } 56 57 printk(KERN_ERR MOD "AE qpid 0x%x opcode %d status 0x%x " 58 "type %d wrid.hi 0x%x wrid.lo 0x%x\n", 59 CQE_QPID(err_cqe), CQE_OPCODE(err_cqe), 60 CQE_STATUS(err_cqe), CQE_TYPE(err_cqe), 61 CQE_WRID_HI(err_cqe), CQE_WRID_LOW(err_cqe)); 62 63 if (qhp->attr.state == C4IW_QP_STATE_RTS) { 64 attrs.next_state = C4IW_QP_STATE_TERMINATE; 65 c4iw_modify_qp(qhp->rhp, qhp, C4IW_QP_ATTR_NEXT_STATE, 66 &attrs, 0); 67 } 68 69 event.event = ib_event; 70 event.device = chp->ibcq.device; 71 if (ib_event == IB_EVENT_CQ_ERR) 72 event.element.cq = &chp->ibcq; 73 else 74 event.element.qp = &qhp->ibqp; 75 if (qhp->ibqp.event_handler) 76 (*qhp->ibqp.event_handler)(&event, qhp->ibqp.qp_context); 77 78 spin_lock_irqsave(&chp->comp_handler_lock, flag); 79 (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context); 80 spin_unlock_irqrestore(&chp->comp_handler_lock, flag); 81 } 82 83 void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe) 84 { 85 struct c4iw_cq *chp; 86 struct c4iw_qp *qhp; 87 u32 cqid; 88 89 spin_lock_irq(&dev->lock); 90 qhp = get_qhp(dev, CQE_QPID(err_cqe)); 91 if (!qhp) { 92 printk(KERN_ERR MOD "BAD AE qpid 0x%x opcode %d " 93 "status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x\n", 94 CQE_QPID(err_cqe), 95 CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe), 96 CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe), 97 CQE_WRID_LOW(err_cqe)); 98 spin_unlock_irq(&dev->lock); 99 goto out; 100 } 101 102 if (SQ_TYPE(err_cqe)) 103 cqid = qhp->attr.scq; 104 else 105 cqid = qhp->attr.rcq; 106 chp = get_chp(dev, cqid); 107 if (!chp) { 108 printk(KERN_ERR MOD "BAD AE cqid 0x%x qpid 0x%x opcode %d " 109 "status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x\n", 110 cqid, CQE_QPID(err_cqe), 111 CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe), 112 CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe), 113 CQE_WRID_LOW(err_cqe)); 114 spin_unlock_irq(&dev->lock); 115 goto out; 116 } 117 118 c4iw_qp_add_ref(&qhp->ibqp); 119 atomic_inc(&chp->refcnt); 120 spin_unlock_irq(&dev->lock); 121 122 /* Bad incoming write */ 123 if (RQ_TYPE(err_cqe) && 124 (CQE_OPCODE(err_cqe) == FW_RI_RDMA_WRITE)) { 125 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_REQ_ERR); 126 goto done; 127 } 128 129 switch (CQE_STATUS(err_cqe)) { 130 131 /* Completion Events */ 132 case T4_ERR_SUCCESS: 133 printk(KERN_ERR MOD "AE with status 0!\n"); 134 break; 135 136 case T4_ERR_STAG: 137 case T4_ERR_PDID: 138 case T4_ERR_QPID: 139 case T4_ERR_ACCESS: 140 case T4_ERR_WRAP: 141 case T4_ERR_BOUND: 142 case T4_ERR_INVALIDATE_SHARED_MR: 143 case T4_ERR_INVALIDATE_MR_WITH_MW_BOUND: 144 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_ACCESS_ERR); 145 break; 146 147 /* Device Fatal Errors */ 148 case T4_ERR_ECC: 149 case T4_ERR_ECC_PSTAG: 150 case T4_ERR_INTERNAL_ERR: 151 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_DEVICE_FATAL); 152 break; 153 154 /* QP Fatal Errors */ 155 case T4_ERR_OUT_OF_RQE: 156 case T4_ERR_PBL_ADDR_BOUND: 157 case T4_ERR_CRC: 158 case T4_ERR_MARKER: 159 case T4_ERR_PDU_LEN_ERR: 160 case T4_ERR_DDP_VERSION: 161 case T4_ERR_RDMA_VERSION: 162 case T4_ERR_OPCODE: 163 case T4_ERR_DDP_QUEUE_NUM: 164 case T4_ERR_MSN: 165 case T4_ERR_TBIT: 166 case T4_ERR_MO: 167 case T4_ERR_MSN_GAP: 168 case T4_ERR_MSN_RANGE: 169 case T4_ERR_RQE_ADDR_BOUND: 170 case T4_ERR_IRD_OVERFLOW: 171 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_FATAL); 172 break; 173 174 default: 175 printk(KERN_ERR MOD "Unknown T4 status 0x%x QPID 0x%x\n", 176 CQE_STATUS(err_cqe), qhp->wq.sq.qid); 177 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_FATAL); 178 break; 179 } 180 done: 181 if (atomic_dec_and_test(&chp->refcnt)) 182 wake_up(&chp->wait); 183 c4iw_qp_rem_ref(&qhp->ibqp); 184 out: 185 return; 186 } 187 188 int c4iw_ev_handler(struct c4iw_dev *dev, u32 qid) 189 { 190 struct c4iw_cq *chp; 191 unsigned long flag; 192 193 chp = get_chp(dev, qid); 194 if (chp) { 195 spin_lock_irqsave(&chp->comp_handler_lock, flag); 196 (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context); 197 spin_unlock_irqrestore(&chp->comp_handler_lock, flag); 198 } else 199 PDBG("%s unknown cqid 0x%x\n", __func__, qid); 200 return 0; 201 } 202