sys/dev/cxgbe/iw_cxgbe/ev.c

   1 /*
   2  * Copyright (c) 2009-2013 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 <sys/cdefs.h>
  33 __FBSDID("$FreeBSD$");
  34
  35 #include "opt_inet.h"
  36
  37 #ifdef TCP_OFFLOAD
  38 #include <linux/slab.h>
  39
  40 #include "iw_cxgbe.h"
  41
  42 static void post_qp_event(struct c4iw_dev *dev, struct c4iw_cq *chp,
  43                           struct c4iw_qp *qhp,
  44                           struct t4_cqe *err_cqe,
  45                           enum ib_event_type ib_event)
  46 {
  47         struct ib_event event;
  48         struct c4iw_qp_attributes attrs;
  49         unsigned long flag;
  50
  51         if ((qhp->attr.state == C4IW_QP_STATE_ERROR) ||
  52             (qhp->attr.state == C4IW_QP_STATE_TERMINATE)) {
  53                 CTR4(KTR_IW_CXGBE, "%s AE received after RTS - "
  54                      "qp state %d qpid 0x%x status 0x%x", __func__,
  55                      qhp->attr.state, qhp->wq.sq.qid, CQE_STATUS(err_cqe));
  56                 return;
  57         }
  58
  59         printf("AE qpid 0x%x opcode %d status 0x%x "
  60                "type %d wrid.hi 0x%x wrid.lo 0x%x\n",
  61                CQE_QPID(err_cqe), CQE_OPCODE(err_cqe),
  62                CQE_STATUS(err_cqe), CQE_TYPE(err_cqe),
  63                CQE_WRID_HI(err_cqe), CQE_WRID_LOW(err_cqe));
  64
  65         if (qhp->attr.state == C4IW_QP_STATE_RTS) {
  66                 attrs.next_state = C4IW_QP_STATE_TERMINATE;
  67                 c4iw_modify_qp(qhp->rhp, qhp, C4IW_QP_ATTR_NEXT_STATE,
  68                                &attrs, 0);
  69         }
  70
  71         event.event = ib_event;
  72         event.device = chp->ibcq.device;
  73         if (ib_event == IB_EVENT_CQ_ERR)
  74                 event.element.cq = &chp->ibcq;
  75         else
  76                 event.element.qp = &qhp->ibqp;
  77         if (qhp->ibqp.event_handler)
  78                 (*qhp->ibqp.event_handler)(&event, qhp->ibqp.qp_context);
  79
  80         spin_lock_irqsave(&chp->comp_handler_lock, flag);
  81         (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context);
  82         spin_unlock_irqrestore(&chp->comp_handler_lock, flag);
  83 }
  84
  85 void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe)
  86 {
  87         struct c4iw_cq *chp;
  88         struct c4iw_qp *qhp;
  89         u32 cqid;
  90
  91         spin_lock_irq(&dev->lock);
  92         qhp = get_qhp(dev, CQE_QPID(err_cqe));
  93         if (!qhp) {
  94                 printf("BAD AE qpid 0x%x opcode %d "
  95                        "status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x\n",
  96                        CQE_QPID(err_cqe),
  97                        CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe),
  98                        CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe),
  99                        CQE_WRID_LOW(err_cqe));
 100                 spin_unlock_irq(&dev->lock);
 101                 goto out;
 102         }
 103
 104         if (SQ_TYPE(err_cqe))
 105                 cqid = qhp->attr.scq;
 106         else
 107                 cqid = qhp->attr.rcq;
 108         chp = get_chp(dev, cqid);
 109         if (!chp) {
 110                 printf("BAD AE cqid 0x%x qpid 0x%x opcode %d "
 111                        "status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x\n",
 112                        cqid, CQE_QPID(err_cqe),
 113                        CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe),
 114                        CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe),
 115                        CQE_WRID_LOW(err_cqe));
 116                 spin_unlock_irq(&dev->lock);
 117                 goto out;
 118         }
 119
 120         c4iw_qp_add_ref(&qhp->ibqp);
 121         atomic_inc(&chp->refcnt);
 122         spin_unlock_irq(&dev->lock);
 123
 124         /* Bad incoming write */
 125         if (RQ_TYPE(err_cqe) &&
 126             (CQE_OPCODE(err_cqe) == FW_RI_RDMA_WRITE)) {
 127                 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_REQ_ERR);
 128                 goto done;
 129         }
 130
 131         switch (CQE_STATUS(err_cqe)) {
 132
 133         /* Completion Events */
 134         case T4_ERR_SUCCESS:
 135                 printf(KERN_ERR MOD "AE with status 0!\n");
 136                 break;
 137
 138         case T4_ERR_STAG:
 139         case T4_ERR_PDID:
 140         case T4_ERR_QPID:
 141         case T4_ERR_ACCESS:
 142         case T4_ERR_WRAP:
 143         case T4_ERR_BOUND:
 144         case T4_ERR_INVALIDATE_SHARED_MR:
 145         case T4_ERR_INVALIDATE_MR_WITH_MW_BOUND:
 146                 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_ACCESS_ERR);
 147                 break;
 148
 149         /* Device Fatal Errors */
 150         case T4_ERR_ECC:
 151         case T4_ERR_ECC_PSTAG:
 152         case T4_ERR_INTERNAL_ERR:
 153                 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_DEVICE_FATAL);
 154                 break;
 155
 156         /* QP Fatal Errors */
 157         case T4_ERR_OUT_OF_RQE:
 158         case T4_ERR_PBL_ADDR_BOUND:
 159         case T4_ERR_CRC:
 160         case T4_ERR_MARKER:
 161         case T4_ERR_PDU_LEN_ERR:
 162         case T4_ERR_DDP_VERSION:
 163         case T4_ERR_RDMA_VERSION:
 164         case T4_ERR_OPCODE:
 165         case T4_ERR_DDP_QUEUE_NUM:
 166         case T4_ERR_MSN:
 167         case T4_ERR_TBIT:
 168         case T4_ERR_MO:
 169         case T4_ERR_MSN_GAP:
 170         case T4_ERR_MSN_RANGE:
 171         case T4_ERR_RQE_ADDR_BOUND:
 172         case T4_ERR_IRD_OVERFLOW:
 173                 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_FATAL);
 174                 break;
 175
 176         default:
 177                 printf("Unknown T4 status 0x%x QPID 0x%x\n",
 178                        CQE_STATUS(err_cqe), qhp->wq.sq.qid);
 179                 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_FATAL);
 180                 break;
 181         }
 182 done:
 183         if (atomic_dec_and_test(&chp->refcnt))
 184                 wake_up(&chp->wait);
 185         c4iw_qp_rem_ref(&qhp->ibqp);
 186 out:
 187         return;
 188 }
 189
 190 int c4iw_ev_handler(struct sge_iq *iq, const struct rsp_ctrl *rc)
 191 {
 192         struct c4iw_dev *dev = iq->adapter->iwarp_softc;
 193         u32 qid = be32_to_cpu(rc->pldbuflen_qid);
 194         struct c4iw_cq *chp;
 195         unsigned long flag;
 196
 197         chp = get_chp(dev, qid);
 198         if (chp) {
 199                 spin_lock_irqsave(&chp->comp_handler_lock, flag);
 200                 (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context);
 201                 spin_unlock_irqrestore(&chp->comp_handler_lock, flag);
 202         } else
 203                 CTR2(KTR_IW_CXGBE, "%s unknown cqid 0x%x", __func__, qid);
 204         return 0;
 205 }
 206 #endif