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cfdda9d7 SW |
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 | ||
46 | if ((qhp->attr.state == C4IW_QP_STATE_ERROR) || | |
47 | (qhp->attr.state == C4IW_QP_STATE_TERMINATE)) { | |
48 | PDBG("%s AE received after RTS - " | |
49 | "qp state %d qpid 0x%x status 0x%x\n", __func__, | |
50 | qhp->attr.state, qhp->wq.sq.qid, CQE_STATUS(err_cqe)); | |
51 | return; | |
52 | } | |
53 | ||
be4c9bad RD |
54 | printk(KERN_ERR MOD "AE qpid 0x%x opcode %d status 0x%x " |
55 | "type %d wrid.hi 0x%x wrid.lo 0x%x\n", | |
cfdda9d7 SW |
56 | CQE_QPID(err_cqe), CQE_OPCODE(err_cqe), |
57 | CQE_STATUS(err_cqe), CQE_TYPE(err_cqe), | |
58 | CQE_WRID_HI(err_cqe), CQE_WRID_LOW(err_cqe)); | |
59 | ||
60 | if (qhp->attr.state == C4IW_QP_STATE_RTS) { | |
61 | attrs.next_state = C4IW_QP_STATE_TERMINATE; | |
62 | c4iw_modify_qp(qhp->rhp, qhp, C4IW_QP_ATTR_NEXT_STATE, | |
be4c9bad | 63 | &attrs, 1); |
cfdda9d7 SW |
64 | } |
65 | ||
66 | event.event = ib_event; | |
67 | event.device = chp->ibcq.device; | |
68 | if (ib_event == IB_EVENT_CQ_ERR) | |
69 | event.element.cq = &chp->ibcq; | |
70 | else | |
71 | event.element.qp = &qhp->ibqp; | |
72 | if (qhp->ibqp.event_handler) | |
73 | (*qhp->ibqp.event_handler)(&event, qhp->ibqp.qp_context); | |
74 | ||
75 | (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context); | |
76 | } | |
77 | ||
78 | void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe) | |
79 | { | |
80 | struct c4iw_cq *chp; | |
81 | struct c4iw_qp *qhp; | |
82 | u32 cqid; | |
83 | ||
84 | spin_lock(&dev->lock); | |
85 | qhp = get_qhp(dev, CQE_QPID(err_cqe)); | |
86 | if (!qhp) { | |
87 | printk(KERN_ERR MOD "BAD AE qpid 0x%x opcode %d " | |
88 | "status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x\n", | |
89 | CQE_QPID(err_cqe), | |
90 | CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe), | |
91 | CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe), | |
92 | CQE_WRID_LOW(err_cqe)); | |
93 | spin_unlock(&dev->lock); | |
94 | goto out; | |
95 | } | |
96 | ||
97 | if (SQ_TYPE(err_cqe)) | |
98 | cqid = qhp->attr.scq; | |
99 | else | |
100 | cqid = qhp->attr.rcq; | |
101 | chp = get_chp(dev, cqid); | |
102 | if (!chp) { | |
103 | printk(KERN_ERR MOD "BAD AE cqid 0x%x qpid 0x%x opcode %d " | |
104 | "status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x\n", | |
105 | cqid, CQE_QPID(err_cqe), | |
106 | CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe), | |
107 | CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe), | |
108 | CQE_WRID_LOW(err_cqe)); | |
109 | spin_unlock(&dev->lock); | |
110 | goto out; | |
111 | } | |
112 | ||
113 | c4iw_qp_add_ref(&qhp->ibqp); | |
114 | atomic_inc(&chp->refcnt); | |
115 | spin_unlock(&dev->lock); | |
116 | ||
117 | /* Bad incoming write */ | |
118 | if (RQ_TYPE(err_cqe) && | |
119 | (CQE_OPCODE(err_cqe) == FW_RI_RDMA_WRITE)) { | |
120 | post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_REQ_ERR); | |
121 | goto done; | |
122 | } | |
123 | ||
124 | switch (CQE_STATUS(err_cqe)) { | |
125 | ||
126 | /* Completion Events */ | |
127 | case T4_ERR_SUCCESS: | |
128 | printk(KERN_ERR MOD "AE with status 0!\n"); | |
129 | break; | |
130 | ||
131 | case T4_ERR_STAG: | |
132 | case T4_ERR_PDID: | |
133 | case T4_ERR_QPID: | |
134 | case T4_ERR_ACCESS: | |
135 | case T4_ERR_WRAP: | |
136 | case T4_ERR_BOUND: | |
137 | case T4_ERR_INVALIDATE_SHARED_MR: | |
138 | case T4_ERR_INVALIDATE_MR_WITH_MW_BOUND: | |
139 | post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_ACCESS_ERR); | |
140 | break; | |
141 | ||
142 | /* Device Fatal Errors */ | |
143 | case T4_ERR_ECC: | |
144 | case T4_ERR_ECC_PSTAG: | |
145 | case T4_ERR_INTERNAL_ERR: | |
146 | post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_DEVICE_FATAL); | |
147 | break; | |
148 | ||
149 | /* QP Fatal Errors */ | |
150 | case T4_ERR_OUT_OF_RQE: | |
151 | case T4_ERR_PBL_ADDR_BOUND: | |
152 | case T4_ERR_CRC: | |
153 | case T4_ERR_MARKER: | |
154 | case T4_ERR_PDU_LEN_ERR: | |
155 | case T4_ERR_DDP_VERSION: | |
156 | case T4_ERR_RDMA_VERSION: | |
157 | case T4_ERR_OPCODE: | |
158 | case T4_ERR_DDP_QUEUE_NUM: | |
159 | case T4_ERR_MSN: | |
160 | case T4_ERR_TBIT: | |
161 | case T4_ERR_MO: | |
162 | case T4_ERR_MSN_GAP: | |
163 | case T4_ERR_MSN_RANGE: | |
164 | case T4_ERR_RQE_ADDR_BOUND: | |
165 | case T4_ERR_IRD_OVERFLOW: | |
166 | post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_FATAL); | |
167 | break; | |
168 | ||
169 | default: | |
170 | printk(KERN_ERR MOD "Unknown T4 status 0x%x QPID 0x%x\n", | |
171 | CQE_STATUS(err_cqe), qhp->wq.sq.qid); | |
172 | post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_FATAL); | |
173 | break; | |
174 | } | |
175 | done: | |
176 | if (atomic_dec_and_test(&chp->refcnt)) | |
177 | wake_up(&chp->wait); | |
178 | c4iw_qp_rem_ref(&qhp->ibqp); | |
179 | out: | |
180 | return; | |
181 | } | |
182 | ||
183 | int c4iw_ev_handler(struct c4iw_dev *dev, u32 qid) | |
184 | { | |
185 | struct c4iw_cq *chp; | |
186 | ||
187 | chp = get_chp(dev, qid); | |
188 | if (chp) | |
189 | (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context); | |
190 | else | |
191 | PDBG("%s unknown cqid 0x%x\n", __func__, qid); | |
192 | return 0; | |
193 | } |