]> Pileus Git - ~andy/linux/blob - drivers/infiniband/hw/cxgb4/ev.c
Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
[~andy/linux] / drivers / infiniband / hw / cxgb4 / ev.c
1 /*
2  * Copyright (c) 2009-2010 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 <linux/slab.h>
33 #include <linux/mman.h>
34 #include <net/sock.h>
35
36 #include "iw_cxgb4.h"
37
38 static void post_qp_event(struct c4iw_dev *dev, struct c4iw_cq *chp,
39                           struct c4iw_qp *qhp,
40                           struct t4_cqe *err_cqe,
41                           enum ib_event_type ib_event)
42 {
43         struct ib_event event;
44         struct c4iw_qp_attributes attrs;
45         unsigned long flag;
46
47         if ((qhp->attr.state == C4IW_QP_STATE_ERROR) ||
48             (qhp->attr.state == C4IW_QP_STATE_TERMINATE)) {
49                 pr_err("%s AE after RTS - qpid 0x%x opcode %d status 0x%x "\
50                        "type %d wrid.hi 0x%x wrid.lo 0x%x\n",
51                        __func__, CQE_QPID(err_cqe), CQE_OPCODE(err_cqe),
52                        CQE_STATUS(err_cqe), CQE_TYPE(err_cqe),
53                        CQE_WRID_HI(err_cqe), CQE_WRID_LOW(err_cqe));
54                 return;
55         }
56
57         printk(KERN_ERR MOD "AE qpid 0x%x opcode %d status 0x%x "
58                "type %d wrid.hi 0x%x wrid.lo 0x%x\n",
59                CQE_QPID(err_cqe), CQE_OPCODE(err_cqe),
60                CQE_STATUS(err_cqe), CQE_TYPE(err_cqe),
61                CQE_WRID_HI(err_cqe), CQE_WRID_LOW(err_cqe));
62
63         if (qhp->attr.state == C4IW_QP_STATE_RTS) {
64                 attrs.next_state = C4IW_QP_STATE_TERMINATE;
65                 c4iw_modify_qp(qhp->rhp, qhp, C4IW_QP_ATTR_NEXT_STATE,
66                                &attrs, 0);
67         }
68
69         event.event = ib_event;
70         event.device = chp->ibcq.device;
71         if (ib_event == IB_EVENT_CQ_ERR)
72                 event.element.cq = &chp->ibcq;
73         else
74                 event.element.qp = &qhp->ibqp;
75         if (qhp->ibqp.event_handler)
76                 (*qhp->ibqp.event_handler)(&event, qhp->ibqp.qp_context);
77
78         spin_lock_irqsave(&chp->comp_handler_lock, flag);
79         (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context);
80         spin_unlock_irqrestore(&chp->comp_handler_lock, flag);
81 }
82
83 void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe)
84 {
85         struct c4iw_cq *chp;
86         struct c4iw_qp *qhp;
87         u32 cqid;
88
89         spin_lock_irq(&dev->lock);
90         qhp = get_qhp(dev, CQE_QPID(err_cqe));
91         if (!qhp) {
92                 printk(KERN_ERR MOD "BAD AE qpid 0x%x opcode %d "
93                        "status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x\n",
94                        CQE_QPID(err_cqe),
95                        CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe),
96                        CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe),
97                        CQE_WRID_LOW(err_cqe));
98                 spin_unlock_irq(&dev->lock);
99                 goto out;
100         }
101
102         if (SQ_TYPE(err_cqe))
103                 cqid = qhp->attr.scq;
104         else
105                 cqid = qhp->attr.rcq;
106         chp = get_chp(dev, cqid);
107         if (!chp) {
108                 printk(KERN_ERR MOD "BAD AE cqid 0x%x qpid 0x%x opcode %d "
109                        "status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x\n",
110                        cqid, CQE_QPID(err_cqe),
111                        CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe),
112                        CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe),
113                        CQE_WRID_LOW(err_cqe));
114                 spin_unlock_irq(&dev->lock);
115                 goto out;
116         }
117
118         c4iw_qp_add_ref(&qhp->ibqp);
119         atomic_inc(&chp->refcnt);
120         spin_unlock_irq(&dev->lock);
121
122         /* Bad incoming write */
123         if (RQ_TYPE(err_cqe) &&
124             (CQE_OPCODE(err_cqe) == FW_RI_RDMA_WRITE)) {
125                 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_REQ_ERR);
126                 goto done;
127         }
128
129         switch (CQE_STATUS(err_cqe)) {
130
131         /* Completion Events */
132         case T4_ERR_SUCCESS:
133                 printk(KERN_ERR MOD "AE with status 0!\n");
134                 break;
135
136         case T4_ERR_STAG:
137         case T4_ERR_PDID:
138         case T4_ERR_QPID:
139         case T4_ERR_ACCESS:
140         case T4_ERR_WRAP:
141         case T4_ERR_BOUND:
142         case T4_ERR_INVALIDATE_SHARED_MR:
143         case T4_ERR_INVALIDATE_MR_WITH_MW_BOUND:
144                 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_ACCESS_ERR);
145                 break;
146
147         /* Device Fatal Errors */
148         case T4_ERR_ECC:
149         case T4_ERR_ECC_PSTAG:
150         case T4_ERR_INTERNAL_ERR:
151                 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_DEVICE_FATAL);
152                 break;
153
154         /* QP Fatal Errors */
155         case T4_ERR_OUT_OF_RQE:
156         case T4_ERR_PBL_ADDR_BOUND:
157         case T4_ERR_CRC:
158         case T4_ERR_MARKER:
159         case T4_ERR_PDU_LEN_ERR:
160         case T4_ERR_DDP_VERSION:
161         case T4_ERR_RDMA_VERSION:
162         case T4_ERR_OPCODE:
163         case T4_ERR_DDP_QUEUE_NUM:
164         case T4_ERR_MSN:
165         case T4_ERR_TBIT:
166         case T4_ERR_MO:
167         case T4_ERR_MSN_GAP:
168         case T4_ERR_MSN_RANGE:
169         case T4_ERR_RQE_ADDR_BOUND:
170         case T4_ERR_IRD_OVERFLOW:
171                 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_FATAL);
172                 break;
173
174         default:
175                 printk(KERN_ERR MOD "Unknown T4 status 0x%x QPID 0x%x\n",
176                        CQE_STATUS(err_cqe), qhp->wq.sq.qid);
177                 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_FATAL);
178                 break;
179         }
180 done:
181         if (atomic_dec_and_test(&chp->refcnt))
182                 wake_up(&chp->wait);
183         c4iw_qp_rem_ref(&qhp->ibqp);
184 out:
185         return;
186 }
187
188 int c4iw_ev_handler(struct c4iw_dev *dev, u32 qid)
189 {
190         struct c4iw_cq *chp;
191         unsigned long flag;
192
193         chp = get_chp(dev, qid);
194         if (chp) {
195                 spin_lock_irqsave(&chp->comp_handler_lock, flag);
196                 (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context);
197                 spin_unlock_irqrestore(&chp->comp_handler_lock, flag);
198         } else
199                 PDBG("%s unknown cqid 0x%x\n", __func__, qid);
200         return 0;
201 }