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
post_qp_event(struct c4iw_dev * dev,struct c4iw_cq * chp,struct c4iw_qp * qhp,struct t4_cqe * err_cqe,enum ib_event_type ib_event)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
c4iw_ev_dispatch(struct c4iw_dev * dev,struct t4_cqe * err_cqe)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
c4iw_ev_handler(struct sge_iq * iq,const struct rsp_ctrl * rc)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
207