drivers/infiniband/hw/cxgb3/iwch_ev.c

   1 /*
   2  * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
   3  * Copyright (c) 2006 Open Grid Computing, Inc. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33 #include <linux/slab.h>
  34 #include <linux/mman.h>
  35 #include <net/sock.h>
  36 #include "iwch_provider.h"
  37 #include "iwch.h"
  38 #include "iwch_cm.h"
  39 #include "cxio_hal.h"
  40 #include "cxio_wr.h"
  41
  42 static void post_qp_event(struct iwch_dev *rnicp, struct iwch_cq *chp,
  43                           struct respQ_msg_t *rsp_msg,
  44                           enum ib_event_type ib_event,
  45                           int send_term)
  46 {
  47         struct ib_event event;
  48         struct iwch_qp_attributes attrs;
  49         struct iwch_qp *qhp;
  50
  51         printk(KERN_ERR "%s - AE qpid 0x%x opcode %d status 0x%x "
  52                "type %d wrid.hi 0x%x wrid.lo 0x%x \n", __FUNCTION__,
  53                CQE_QPID(rsp_msg->cqe), CQE_OPCODE(rsp_msg->cqe),
  54                CQE_STATUS(rsp_msg->cqe), CQE_TYPE(rsp_msg->cqe),
  55                CQE_WRID_HI(rsp_msg->cqe), CQE_WRID_LOW(rsp_msg->cqe));
  56
  57         spin_lock(&rnicp->lock);
  58         qhp = get_qhp(rnicp, CQE_QPID(rsp_msg->cqe));
  59
  60         if (!qhp) {
  61                 printk(KERN_ERR "%s unaffiliated error 0x%x qpid 0x%x\n",
  62                        __FUNCTION__, CQE_STATUS(rsp_msg->cqe),
  63                        CQE_QPID(rsp_msg->cqe));
  64                 spin_unlock(&rnicp->lock);
  65                 return;
  66         }
  67
  68         if ((qhp->attr.state == IWCH_QP_STATE_ERROR) ||
  69             (qhp->attr.state == IWCH_QP_STATE_TERMINATE)) {
  70                 PDBG("%s AE received after RTS - "
  71                      "qp state %d qpid 0x%x status 0x%x\n", __FUNCTION__,
  72                      qhp->attr.state, qhp->wq.qpid, CQE_STATUS(rsp_msg->cqe));
  73                 spin_unlock(&rnicp->lock);
  74                 return;
  75         }
  76
  77         atomic_inc(&qhp->refcnt);
  78         spin_unlock(&rnicp->lock);
  79
  80         event.event = ib_event;
  81         event.device = chp->ibcq.device;
  82         if (ib_event == IB_EVENT_CQ_ERR)
  83                 event.element.cq = &chp->ibcq;
  84         else
  85                 event.element.qp = &qhp->ibqp;
  86
  87         if (qhp->ibqp.event_handler)
  88                 (*qhp->ibqp.event_handler)(&event, qhp->ibqp.qp_context);
  89
  90         if (qhp->attr.state == IWCH_QP_STATE_RTS) {
  91                 attrs.next_state = IWCH_QP_STATE_TERMINATE;
  92                 iwch_modify_qp(qhp->rhp, qhp, IWCH_QP_ATTR_NEXT_STATE,
  93                                &attrs, 1);
  94                 if (send_term)
  95                         iwch_post_terminate(qhp, rsp_msg);
  96         }
  97
  98         if (atomic_dec_and_test(&qhp->refcnt))
  99                 wake_up(&qhp->wait);
 100 }
 101
 102 void iwch_ev_dispatch(struct cxio_rdev *rdev_p, struct sk_buff *skb)
 103 {
 104         struct iwch_dev *rnicp;
 105         struct respQ_msg_t *rsp_msg = (struct respQ_msg_t *) skb->data;
 106         struct iwch_cq *chp;
 107         struct iwch_qp *qhp;
 108         u32 cqid = RSPQ_CQID(rsp_msg);
 109
 110         rnicp = (struct iwch_dev *) rdev_p->ulp;
 111         spin_lock(&rnicp->lock);
 112         chp = get_chp(rnicp, cqid);
 113         qhp = get_qhp(rnicp, CQE_QPID(rsp_msg->cqe));
 114         if (!chp || !qhp) {
 115                 printk(KERN_ERR MOD "BAD AE cqid 0x%x qpid 0x%x opcode %d "
 116                        "status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x \n",
 117                        cqid, CQE_QPID(rsp_msg->cqe),
 118                        CQE_OPCODE(rsp_msg->cqe), CQE_STATUS(rsp_msg->cqe),
 119                        CQE_TYPE(rsp_msg->cqe), CQE_WRID_HI(rsp_msg->cqe),
 120                        CQE_WRID_LOW(rsp_msg->cqe));
 121                 spin_unlock(&rnicp->lock);
 122                 goto out;
 123         }
 124         iwch_qp_add_ref(&qhp->ibqp);
 125         atomic_inc(&chp->refcnt);
 126         spin_unlock(&rnicp->lock);
 127
 128         /*
 129          * 1) completion of our sending a TERMINATE.
 130          * 2) incoming TERMINATE message.
 131          */
 132         if ((CQE_OPCODE(rsp_msg->cqe) == T3_TERMINATE) &&
 133             (CQE_STATUS(rsp_msg->cqe) == 0)) {
 134                 if (SQ_TYPE(rsp_msg->cqe)) {
 135                         PDBG("%s QPID 0x%x ep %p disconnecting\n",
 136                              __FUNCTION__, qhp->wq.qpid, qhp->ep);
 137                         iwch_ep_disconnect(qhp->ep, 0, GFP_ATOMIC);
 138                 } else {
 139                         PDBG("%s post REQ_ERR AE QPID 0x%x\n", __FUNCTION__,
 140                              qhp->wq.qpid);
 141                         post_qp_event(rnicp, chp, rsp_msg,
 142                                       IB_EVENT_QP_REQ_ERR, 0);
 143                         iwch_ep_disconnect(qhp->ep, 0, GFP_ATOMIC);
 144                 }
 145                 goto done;
 146         }
 147
 148         /* Bad incoming Read request */
 149         if (SQ_TYPE(rsp_msg->cqe) &&
 150             (CQE_OPCODE(rsp_msg->cqe) == T3_READ_RESP)) {
 151                 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_REQ_ERR, 1);
 152                 goto done;
 153         }
 154
 155         /* Bad incoming write */
 156         if (RQ_TYPE(rsp_msg->cqe) &&
 157             (CQE_OPCODE(rsp_msg->cqe) == T3_RDMA_WRITE)) {
 158                 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_REQ_ERR, 1);
 159                 goto done;
 160         }
 161
 162         switch (CQE_STATUS(rsp_msg->cqe)) {
 163
 164         /* Completion Events */
 165         case TPT_ERR_SUCCESS:
 166
 167                 /*
 168                  * Confirm the destination entry if this is a RECV completion.
 169                  */
 170                 if (qhp->ep && SQ_TYPE(rsp_msg->cqe))
 171                         dst_confirm(qhp->ep->dst);
 172                 (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context);
 173                 break;
 174
 175         case TPT_ERR_STAG:
 176         case TPT_ERR_PDID:
 177         case TPT_ERR_QPID:
 178         case TPT_ERR_ACCESS:
 179         case TPT_ERR_WRAP:
 180         case TPT_ERR_BOUND:
 181         case TPT_ERR_INVALIDATE_SHARED_MR:
 182         case TPT_ERR_INVALIDATE_MR_WITH_MW_BOUND:
 183                 printk(KERN_ERR "%s - CQE Err qpid 0x%x opcode %d status 0x%x "
 184                        "type %d wrid.hi 0x%x wrid.lo 0x%x \n", __FUNCTION__,
 185                        CQE_QPID(rsp_msg->cqe), CQE_OPCODE(rsp_msg->cqe),
 186                        CQE_STATUS(rsp_msg->cqe), CQE_TYPE(rsp_msg->cqe),
 187                        CQE_WRID_HI(rsp_msg->cqe), CQE_WRID_LOW(rsp_msg->cqe));
 188                 (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context);
 189                 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_ACCESS_ERR, 1);
 190                 break;
 191
 192         /* Device Fatal Errors */
 193         case TPT_ERR_ECC:
 194         case TPT_ERR_ECC_PSTAG:
 195         case TPT_ERR_INTERNAL_ERR:
 196                 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_DEVICE_FATAL, 1);
 197                 break;
 198
 199         /* QP Fatal Errors */
 200         case TPT_ERR_OUT_OF_RQE:
 201         case TPT_ERR_PBL_ADDR_BOUND:
 202         case TPT_ERR_CRC:
 203         case TPT_ERR_MARKER:
 204         case TPT_ERR_PDU_LEN_ERR:
 205         case TPT_ERR_DDP_VERSION:
 206         case TPT_ERR_RDMA_VERSION:
 207         case TPT_ERR_OPCODE:
 208         case TPT_ERR_DDP_QUEUE_NUM:
 209         case TPT_ERR_MSN:
 210         case TPT_ERR_TBIT:
 211         case TPT_ERR_MO:
 212         case TPT_ERR_MSN_GAP:
 213         case TPT_ERR_MSN_RANGE:
 214         case TPT_ERR_RQE_ADDR_BOUND:
 215         case TPT_ERR_IRD_OVERFLOW:
 216                 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_FATAL, 1);
 217                 break;
 218
 219         default:
 220                 printk(KERN_ERR MOD "Unknown T3 status 0x%x QPID 0x%x\n",
 221                        CQE_STATUS(rsp_msg->cqe), qhp->wq.qpid);
 222                 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_FATAL, 1);
 223                 break;
 224         }
 225 done:
 226         if (atomic_dec_and_test(&chp->refcnt))
 227                 wake_up(&chp->wait);
 228         iwch_qp_rem_ref(&qhp->ibqp);
 229 out:
 230         dev_kfree_skb_irq(skb);
 231 }