blob: 71e0d845da3d976588542aebd2803e9d4a6ef2e9 [file] [log] [blame]
Steve Wiseb038ced2007-02-12 16:16:18 -08001/*
2 * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
Steve Wiseb038ced2007-02-12 16:16:18 -08003 *
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 */
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090032#include <linux/gfp.h>
Steve Wiseb038ced2007-02-12 16:16:18 -080033#include <linux/mman.h>
34#include <net/sock.h>
35#include "iwch_provider.h"
36#include "iwch.h"
37#include "iwch_cm.h"
38#include "cxio_hal.h"
39#include "cxio_wr.h"
40
41static void post_qp_event(struct iwch_dev *rnicp, struct iwch_cq *chp,
42 struct respQ_msg_t *rsp_msg,
43 enum ib_event_type ib_event,
44 int send_term)
45{
46 struct ib_event event;
47 struct iwch_qp_attributes attrs;
48 struct iwch_qp *qhp;
49
Steve Wiseb038ced2007-02-12 16:16:18 -080050 spin_lock(&rnicp->lock);
51 qhp = get_qhp(rnicp, CQE_QPID(rsp_msg->cqe));
52
53 if (!qhp) {
54 printk(KERN_ERR "%s unaffiliated error 0x%x qpid 0x%x\n",
Harvey Harrison33718362008-04-16 21:01:10 -070055 __func__, CQE_STATUS(rsp_msg->cqe),
Steve Wiseb038ced2007-02-12 16:16:18 -080056 CQE_QPID(rsp_msg->cqe));
57 spin_unlock(&rnicp->lock);
58 return;
59 }
60
61 if ((qhp->attr.state == IWCH_QP_STATE_ERROR) ||
62 (qhp->attr.state == IWCH_QP_STATE_TERMINATE)) {
63 PDBG("%s AE received after RTS - "
Harvey Harrison33718362008-04-16 21:01:10 -070064 "qp state %d qpid 0x%x status 0x%x\n", __func__,
Steve Wiseb038ced2007-02-12 16:16:18 -080065 qhp->attr.state, qhp->wq.qpid, CQE_STATUS(rsp_msg->cqe));
66 spin_unlock(&rnicp->lock);
67 return;
68 }
69
Steve Wise8cfccf02007-03-06 14:44:03 -060070 printk(KERN_ERR "%s - AE qpid 0x%x opcode %d status 0x%x "
Harvey Harrison33718362008-04-16 21:01:10 -070071 "type %d wrid.hi 0x%x wrid.lo 0x%x \n", __func__,
Steve Wise8cfccf02007-03-06 14:44:03 -060072 CQE_QPID(rsp_msg->cqe), CQE_OPCODE(rsp_msg->cqe),
73 CQE_STATUS(rsp_msg->cqe), CQE_TYPE(rsp_msg->cqe),
74 CQE_WRID_HI(rsp_msg->cqe), CQE_WRID_LOW(rsp_msg->cqe));
75
Steve Wiseb038ced2007-02-12 16:16:18 -080076 atomic_inc(&qhp->refcnt);
77 spin_unlock(&rnicp->lock);
78
Steve Wiseb9551502010-10-21 12:37:06 +000079 if (qhp->attr.state == IWCH_QP_STATE_RTS) {
80 attrs.next_state = IWCH_QP_STATE_TERMINATE;
81 iwch_modify_qp(qhp->rhp, qhp, IWCH_QP_ATTR_NEXT_STATE,
82 &attrs, 1);
83 if (send_term)
84 iwch_post_terminate(qhp, rsp_msg);
85 }
86
Steve Wiseb038ced2007-02-12 16:16:18 -080087 event.event = ib_event;
88 event.device = chp->ibcq.device;
89 if (ib_event == IB_EVENT_CQ_ERR)
90 event.element.cq = &chp->ibcq;
91 else
92 event.element.qp = &qhp->ibqp;
93
94 if (qhp->ibqp.event_handler)
95 (*qhp->ibqp.event_handler)(&event, qhp->ibqp.qp_context);
96
Steve Wiseb9551502010-10-21 12:37:06 +000097 (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context);
Steve Wiseb038ced2007-02-12 16:16:18 -080098
99 if (atomic_dec_and_test(&qhp->refcnt))
100 wake_up(&qhp->wait);
101}
102
103void iwch_ev_dispatch(struct cxio_rdev *rdev_p, struct sk_buff *skb)
104{
105 struct iwch_dev *rnicp;
106 struct respQ_msg_t *rsp_msg = (struct respQ_msg_t *) skb->data;
107 struct iwch_cq *chp;
108 struct iwch_qp *qhp;
109 u32 cqid = RSPQ_CQID(rsp_msg);
110
111 rnicp = (struct iwch_dev *) rdev_p->ulp;
112 spin_lock(&rnicp->lock);
113 chp = get_chp(rnicp, cqid);
114 qhp = get_qhp(rnicp, CQE_QPID(rsp_msg->cqe));
115 if (!chp || !qhp) {
116 printk(KERN_ERR MOD "BAD AE cqid 0x%x qpid 0x%x opcode %d "
117 "status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x \n",
118 cqid, CQE_QPID(rsp_msg->cqe),
119 CQE_OPCODE(rsp_msg->cqe), CQE_STATUS(rsp_msg->cqe),
120 CQE_TYPE(rsp_msg->cqe), CQE_WRID_HI(rsp_msg->cqe),
121 CQE_WRID_LOW(rsp_msg->cqe));
122 spin_unlock(&rnicp->lock);
123 goto out;
124 }
125 iwch_qp_add_ref(&qhp->ibqp);
126 atomic_inc(&chp->refcnt);
127 spin_unlock(&rnicp->lock);
128
129 /*
130 * 1) completion of our sending a TERMINATE.
131 * 2) incoming TERMINATE message.
132 */
133 if ((CQE_OPCODE(rsp_msg->cqe) == T3_TERMINATE) &&
134 (CQE_STATUS(rsp_msg->cqe) == 0)) {
135 if (SQ_TYPE(rsp_msg->cqe)) {
136 PDBG("%s QPID 0x%x ep %p disconnecting\n",
Harvey Harrison33718362008-04-16 21:01:10 -0700137 __func__, qhp->wq.qpid, qhp->ep);
Steve Wiseb038ced2007-02-12 16:16:18 -0800138 iwch_ep_disconnect(qhp->ep, 0, GFP_ATOMIC);
139 } else {
Harvey Harrison33718362008-04-16 21:01:10 -0700140 PDBG("%s post REQ_ERR AE QPID 0x%x\n", __func__,
Steve Wiseb038ced2007-02-12 16:16:18 -0800141 qhp->wq.qpid);
142 post_qp_event(rnicp, chp, rsp_msg,
143 IB_EVENT_QP_REQ_ERR, 0);
144 iwch_ep_disconnect(qhp->ep, 0, GFP_ATOMIC);
145 }
146 goto done;
147 }
148
149 /* Bad incoming Read request */
150 if (SQ_TYPE(rsp_msg->cqe) &&
151 (CQE_OPCODE(rsp_msg->cqe) == T3_READ_RESP)) {
152 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_REQ_ERR, 1);
153 goto done;
154 }
155
156 /* Bad incoming write */
157 if (RQ_TYPE(rsp_msg->cqe) &&
158 (CQE_OPCODE(rsp_msg->cqe) == T3_RDMA_WRITE)) {
159 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_REQ_ERR, 1);
160 goto done;
161 }
162
163 switch (CQE_STATUS(rsp_msg->cqe)) {
164
165 /* Completion Events */
166 case TPT_ERR_SUCCESS:
167
168 /*
169 * Confirm the destination entry if this is a RECV completion.
170 */
171 if (qhp->ep && SQ_TYPE(rsp_msg->cqe))
172 dst_confirm(qhp->ep->dst);
173 (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context);
174 break;
175
176 case TPT_ERR_STAG:
177 case TPT_ERR_PDID:
178 case TPT_ERR_QPID:
179 case TPT_ERR_ACCESS:
180 case TPT_ERR_WRAP:
181 case TPT_ERR_BOUND:
182 case TPT_ERR_INVALIDATE_SHARED_MR:
183 case TPT_ERR_INVALIDATE_MR_WITH_MW_BOUND:
Steve Wiseb038ced2007-02-12 16:16:18 -0800184 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_ACCESS_ERR, 1);
185 break;
186
187 /* Device Fatal Errors */
188 case TPT_ERR_ECC:
189 case TPT_ERR_ECC_PSTAG:
190 case TPT_ERR_INTERNAL_ERR:
191 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_DEVICE_FATAL, 1);
192 break;
193
194 /* QP Fatal Errors */
195 case TPT_ERR_OUT_OF_RQE:
196 case TPT_ERR_PBL_ADDR_BOUND:
197 case TPT_ERR_CRC:
198 case TPT_ERR_MARKER:
199 case TPT_ERR_PDU_LEN_ERR:
200 case TPT_ERR_DDP_VERSION:
201 case TPT_ERR_RDMA_VERSION:
202 case TPT_ERR_OPCODE:
203 case TPT_ERR_DDP_QUEUE_NUM:
204 case TPT_ERR_MSN:
205 case TPT_ERR_TBIT:
206 case TPT_ERR_MO:
207 case TPT_ERR_MSN_GAP:
208 case TPT_ERR_MSN_RANGE:
209 case TPT_ERR_RQE_ADDR_BOUND:
210 case TPT_ERR_IRD_OVERFLOW:
211 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_FATAL, 1);
212 break;
213
214 default:
215 printk(KERN_ERR MOD "Unknown T3 status 0x%x QPID 0x%x\n",
216 CQE_STATUS(rsp_msg->cqe), qhp->wq.qpid);
217 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_FATAL, 1);
218 break;
219 }
220done:
221 if (atomic_dec_and_test(&chp->refcnt))
222 wake_up(&chp->wait);
223 iwch_qp_rem_ref(&qhp->ibqp);
224out:
225 dev_kfree_skb_irq(skb);
226}