Merge branch 'master' into upstream
[linux-2.6] / 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 }