sys/dev/cxgbe/iw_cxgbe/ev.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2009-2013 Chelsio, 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 #include <sys/cdefs.h>
  35 __FBSDID("$FreeBSD$");
  36
  37 #include "opt_inet.h"
  38
  39 #ifdef TCP_OFFLOAD
  40 #include <linux/slab.h>
  41
  42 #include "iw_cxgbe.h"
  43
  44 static void post_qp_event(struct c4iw_dev *dev, struct c4iw_cq *chp,
  45                           struct c4iw_qp *qhp,
  46                           struct t4_cqe *err_cqe,
  47                           enum ib_event_type ib_event)
  48 {
  49         struct ib_event event;
  50         struct c4iw_qp_attributes attrs;
  51         unsigned long flag;
  52
  53         if ((qhp->attr.state == C4IW_QP_STATE_ERROR) ||
  54             (qhp->attr.state == C4IW_QP_STATE_TERMINATE)) {
  55                 CTR4(KTR_IW_CXGBE, "%s AE received after RTS - "
  56                      "qp state %d qpid 0x%x status 0x%x", __func__,
  57                      qhp->attr.state, qhp->wq.sq.qid, CQE_STATUS(err_cqe));
  58                 return;
  59         }
  60
  61         printf("AE qpid 0x%x opcode %d status 0x%x "
  62                "type %d wrid.hi 0x%x wrid.lo 0x%x\n",
  63                CQE_QPID(err_cqe), CQE_OPCODE(err_cqe),
  64                CQE_STATUS(err_cqe), CQE_TYPE(err_cqe),
  65                CQE_WRID_HI(err_cqe), CQE_WRID_LOW(err_cqe));
  66
  67         if (qhp->attr.state == C4IW_QP_STATE_RTS) {
  68                 attrs.next_state = C4IW_QP_STATE_TERMINATE;
  69                 c4iw_modify_qp(qhp->rhp, qhp, C4IW_QP_ATTR_NEXT_STATE,
  70                                &attrs, 0);
  71         }
  72
  73         event.event = ib_event;
  74         event.device = chp->ibcq.device;
  75         if (ib_event == IB_EVENT_CQ_ERR)
  76                 event.element.cq = &chp->ibcq;
  77         else
  78                 event.element.qp = &qhp->ibqp;
  79         if (qhp->ibqp.event_handler)
  80                 (*qhp->ibqp.event_handler)(&event, qhp->ibqp.qp_context);
  81
  82         spin_lock_irqsave(&chp->comp_handler_lock, flag);
  83         (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context);
  84         spin_unlock_irqrestore(&chp->comp_handler_lock, flag);
  85 }
  86
  87 void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe)
  88 {
  89         struct c4iw_cq *chp;
  90         struct c4iw_qp *qhp;
  91         u32 cqid;
  92
  93         spin_lock_irq(&dev->lock);
  94         qhp = get_qhp(dev, CQE_QPID(err_cqe));
  95         if (!qhp) {
  96                 printf("BAD AE qpid 0x%x opcode %d "
  97                        "status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x\n",
  98                        CQE_QPID(err_cqe),
  99                        CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe),
 100                        CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe),
 101                        CQE_WRID_LOW(err_cqe));
 102                 spin_unlock_irq(&dev->lock);
 103                 goto out;
 104         }
 105
 106         if (SQ_TYPE(err_cqe))
 107                 cqid = qhp->attr.scq;
 108         else
 109                 cqid = qhp->attr.rcq;
 110         chp = get_chp(dev, cqid);
 111         if (!chp) {
 112                 printf("BAD AE cqid 0x%x qpid 0x%x opcode %d "
 113                        "status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x\n",
 114                        cqid, CQE_QPID(err_cqe),
 115                        CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe),
 116                        CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe),
 117                        CQE_WRID_LOW(err_cqe));
 118                 spin_unlock_irq(&dev->lock);
 119                 goto out;
 120         }
 121
 122         c4iw_qp_add_ref(&qhp->ibqp);
 123         atomic_inc(&chp->refcnt);
 124         spin_unlock_irq(&dev->lock);
 125
 126         /* Bad incoming write */
 127         if (RQ_TYPE(err_cqe) &&
 128             (CQE_OPCODE(err_cqe) == FW_RI_RDMA_WRITE)) {
 129                 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_REQ_ERR);
 130                 goto done;
 131         }
 132
 133         switch (CQE_STATUS(err_cqe)) {
 134
 135         /* Completion Events */
 136         case T4_ERR_SUCCESS:
 137                 printf(KERN_ERR MOD "AE with status 0!\n");
 138                 break;
 139
 140         case T4_ERR_STAG:
 141         case T4_ERR_PDID:
 142         case T4_ERR_QPID:
 143         case T4_ERR_ACCESS:
 144         case T4_ERR_WRAP:
 145         case T4_ERR_BOUND:
 146         case T4_ERR_INVALIDATE_SHARED_MR:
 147         case T4_ERR_INVALIDATE_MR_WITH_MW_BOUND:
 148                 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_ACCESS_ERR);
 149                 break;
 150
 151         /* Device Fatal Errors */
 152         case T4_ERR_ECC:
 153         case T4_ERR_ECC_PSTAG:
 154         case T4_ERR_INTERNAL_ERR:
 155                 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_DEVICE_FATAL);
 156                 break;
 157
 158         /* QP Fatal Errors */
 159         case T4_ERR_OUT_OF_RQE:
 160         case T4_ERR_PBL_ADDR_BOUND:
 161         case T4_ERR_CRC:
 162         case T4_ERR_MARKER:
 163         case T4_ERR_PDU_LEN_ERR:
 164         case T4_ERR_DDP_VERSION:
 165         case T4_ERR_RDMA_VERSION:
 166         case T4_ERR_OPCODE:
 167         case T4_ERR_DDP_QUEUE_NUM:
 168         case T4_ERR_MSN:
 169         case T4_ERR_TBIT:
 170         case T4_ERR_MO:
 171         case T4_ERR_MSN_GAP:
 172         case T4_ERR_MSN_RANGE:
 173         case T4_ERR_RQE_ADDR_BOUND:
 174         case T4_ERR_IRD_OVERFLOW:
 175                 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_FATAL);
 176                 break;
 177
 178         default:
 179                 printf("Unknown T4 status 0x%x QPID 0x%x\n",
 180                        CQE_STATUS(err_cqe), qhp->wq.sq.qid);
 181                 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_FATAL);
 182                 break;
 183         }
 184 done:
 185         if (atomic_dec_and_test(&chp->refcnt))
 186                 wake_up(&chp->wait);
 187         c4iw_qp_rem_ref(&qhp->ibqp);
 188 out:
 189         return;
 190 }
 191
 192 int c4iw_ev_handler(struct sge_iq *iq, const struct rsp_ctrl *rc)
 193 {
 194         struct c4iw_dev *dev = iq->adapter->iwarp_softc;
 195         u32 qid = be32_to_cpu(rc->pldbuflen_qid);
 196         struct c4iw_cq *chp;
 197         unsigned long flag;
 198
 199         spin_lock_irqsave(&dev->lock, flag);
 200         chp = get_chp(dev, qid);
 201         if (chp) {
 202                 atomic_inc(&chp->refcnt);
 203                 spin_unlock_irqrestore(&dev->lock, flag);
 204
 205                 spin_lock_irqsave(&chp->comp_handler_lock, flag);
 206                 (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context);
 207                 spin_unlock_irqrestore(&chp->comp_handler_lock, flag);
 208                 if (atomic_dec_and_test(&chp->refcnt))
 209                         wake_up(&chp->wait);
 210         } else {
 211                 CTR2(KTR_IW_CXGBE, "%s unknown cqid 0x%x", __func__, qid);
 212                 spin_unlock_irqrestore(&dev->lock, flag);
 213         }
 214
 215         return 0;
 216 }
 217 #endif