include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[linux-3.10.git] / drivers / infiniband / hw / cxgb3 / iwch_ev.c
1 /*
2  * Copyright (c) 2006 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/gfp.h>
33 #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
41 static 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
50         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",
55                        __func__, CQE_STATUS(rsp_msg->cqe),
56                        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 - "
64                      "qp state %d qpid 0x%x status 0x%x\n", __func__,
65                      qhp->attr.state, qhp->wq.qpid, CQE_STATUS(rsp_msg->cqe));
66                 spin_unlock(&rnicp->lock);
67                 return;
68         }
69
70         printk(KERN_ERR "%s - AE qpid 0x%x opcode %d status 0x%x "
71                "type %d wrid.hi 0x%x wrid.lo 0x%x \n", __func__,
72                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
76         atomic_inc(&qhp->refcnt);
77         spin_unlock(&rnicp->lock);
78
79         event.event = ib_event;
80         event.device = chp->ibcq.device;
81         if (ib_event == IB_EVENT_CQ_ERR)
82                 event.element.cq = &chp->ibcq;
83         else
84                 event.element.qp = &qhp->ibqp;
85
86         if (qhp->ibqp.event_handler)
87                 (*qhp->ibqp.event_handler)(&event, qhp->ibqp.qp_context);
88
89         if (qhp->attr.state == IWCH_QP_STATE_RTS) {
90                 attrs.next_state = IWCH_QP_STATE_TERMINATE;
91                 iwch_modify_qp(qhp->rhp, qhp, IWCH_QP_ATTR_NEXT_STATE,
92                                &attrs, 1);
93                 if (send_term)
94                         iwch_post_terminate(qhp, rsp_msg);
95         }
96
97         if (atomic_dec_and_test(&qhp->refcnt))
98                 wake_up(&qhp->wait);
99 }
100
101 void iwch_ev_dispatch(struct cxio_rdev *rdev_p, struct sk_buff *skb)
102 {
103         struct iwch_dev *rnicp;
104         struct respQ_msg_t *rsp_msg = (struct respQ_msg_t *) skb->data;
105         struct iwch_cq *chp;
106         struct iwch_qp *qhp;
107         u32 cqid = RSPQ_CQID(rsp_msg);
108
109         rnicp = (struct iwch_dev *) rdev_p->ulp;
110         spin_lock(&rnicp->lock);
111         chp = get_chp(rnicp, cqid);
112         qhp = get_qhp(rnicp, CQE_QPID(rsp_msg->cqe));
113         if (!chp || !qhp) {
114                 printk(KERN_ERR MOD "BAD AE cqid 0x%x qpid 0x%x opcode %d "
115                        "status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x \n",
116                        cqid, CQE_QPID(rsp_msg->cqe),
117                        CQE_OPCODE(rsp_msg->cqe), CQE_STATUS(rsp_msg->cqe),
118                        CQE_TYPE(rsp_msg->cqe), CQE_WRID_HI(rsp_msg->cqe),
119                        CQE_WRID_LOW(rsp_msg->cqe));
120                 spin_unlock(&rnicp->lock);
121                 goto out;
122         }
123         iwch_qp_add_ref(&qhp->ibqp);
124         atomic_inc(&chp->refcnt);
125         spin_unlock(&rnicp->lock);
126
127         /*
128          * 1) completion of our sending a TERMINATE.
129          * 2) incoming TERMINATE message.
130          */
131         if ((CQE_OPCODE(rsp_msg->cqe) == T3_TERMINATE) &&
132             (CQE_STATUS(rsp_msg->cqe) == 0)) {
133                 if (SQ_TYPE(rsp_msg->cqe)) {
134                         PDBG("%s QPID 0x%x ep %p disconnecting\n",
135                              __func__, qhp->wq.qpid, qhp->ep);
136                         iwch_ep_disconnect(qhp->ep, 0, GFP_ATOMIC);
137                 } else {
138                         PDBG("%s post REQ_ERR AE QPID 0x%x\n", __func__,
139                              qhp->wq.qpid);
140                         post_qp_event(rnicp, chp, rsp_msg,
141                                       IB_EVENT_QP_REQ_ERR, 0);
142                         iwch_ep_disconnect(qhp->ep, 0, GFP_ATOMIC);
143                 }
144                 goto done;
145         }
146
147         /* Bad incoming Read request */
148         if (SQ_TYPE(rsp_msg->cqe) &&
149             (CQE_OPCODE(rsp_msg->cqe) == T3_READ_RESP)) {
150                 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_REQ_ERR, 1);
151                 goto done;
152         }
153
154         /* Bad incoming write */
155         if (RQ_TYPE(rsp_msg->cqe) &&
156             (CQE_OPCODE(rsp_msg->cqe) == T3_RDMA_WRITE)) {
157                 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_REQ_ERR, 1);
158                 goto done;
159         }
160
161         switch (CQE_STATUS(rsp_msg->cqe)) {
162
163         /* Completion Events */
164         case TPT_ERR_SUCCESS:
165
166                 /*
167                  * Confirm the destination entry if this is a RECV completion.
168                  */
169                 if (qhp->ep && SQ_TYPE(rsp_msg->cqe))
170                         dst_confirm(qhp->ep->dst);
171                 (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context);
172                 break;
173
174         case TPT_ERR_STAG:
175         case TPT_ERR_PDID:
176         case TPT_ERR_QPID:
177         case TPT_ERR_ACCESS:
178         case TPT_ERR_WRAP:
179         case TPT_ERR_BOUND:
180         case TPT_ERR_INVALIDATE_SHARED_MR:
181         case TPT_ERR_INVALIDATE_MR_WITH_MW_BOUND:
182                 (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context);
183                 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_ACCESS_ERR, 1);
184                 break;
185
186         /* Device Fatal Errors */
187         case TPT_ERR_ECC:
188         case TPT_ERR_ECC_PSTAG:
189         case TPT_ERR_INTERNAL_ERR:
190                 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_DEVICE_FATAL, 1);
191                 break;
192
193         /* QP Fatal Errors */
194         case TPT_ERR_OUT_OF_RQE:
195         case TPT_ERR_PBL_ADDR_BOUND:
196         case TPT_ERR_CRC:
197         case TPT_ERR_MARKER:
198         case TPT_ERR_PDU_LEN_ERR:
199         case TPT_ERR_DDP_VERSION:
200         case TPT_ERR_RDMA_VERSION:
201         case TPT_ERR_OPCODE:
202         case TPT_ERR_DDP_QUEUE_NUM:
203         case TPT_ERR_MSN:
204         case TPT_ERR_TBIT:
205         case TPT_ERR_MO:
206         case TPT_ERR_MSN_GAP:
207         case TPT_ERR_MSN_RANGE:
208         case TPT_ERR_RQE_ADDR_BOUND:
209         case TPT_ERR_IRD_OVERFLOW:
210                 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_FATAL, 1);
211                 break;
212
213         default:
214                 printk(KERN_ERR MOD "Unknown T3 status 0x%x QPID 0x%x\n",
215                        CQE_STATUS(rsp_msg->cqe), qhp->wq.qpid);
216                 post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_FATAL, 1);
217                 break;
218         }
219 done:
220         if (atomic_dec_and_test(&chp->refcnt))
221                 wake_up(&chp->wait);
222         iwch_qp_rem_ref(&qhp->ibqp);
223 out:
224         dev_kfree_skb_irq(skb);
225 }