Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2006 Chelsio, Inc. All rights reserved. |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 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 | */ |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 32 | #include <linux/gfp.h> |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 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; |
Kumar Sanghvi | f7cc25d | 2011-10-24 21:20:22 +0530 | [diff] [blame] | 49 | unsigned long flag; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 50 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 51 | spin_lock(&rnicp->lock); |
| 52 | qhp = get_qhp(rnicp, CQE_QPID(rsp_msg->cqe)); |
| 53 | |
| 54 | if (!qhp) { |
| 55 | printk(KERN_ERR "%s unaffiliated error 0x%x qpid 0x%x\n", |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 56 | __func__, CQE_STATUS(rsp_msg->cqe), |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 57 | CQE_QPID(rsp_msg->cqe)); |
| 58 | spin_unlock(&rnicp->lock); |
| 59 | return; |
| 60 | } |
| 61 | |
| 62 | if ((qhp->attr.state == IWCH_QP_STATE_ERROR) || |
| 63 | (qhp->attr.state == IWCH_QP_STATE_TERMINATE)) { |
| 64 | PDBG("%s AE received after RTS - " |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 65 | "qp state %d qpid 0x%x status 0x%x\n", __func__, |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 66 | qhp->attr.state, qhp->wq.qpid, CQE_STATUS(rsp_msg->cqe)); |
| 67 | spin_unlock(&rnicp->lock); |
| 68 | return; |
| 69 | } |
| 70 | |
Steve Wise | 8cfccf0 | 2007-03-06 14:44:03 -0600 | [diff] [blame] | 71 | printk(KERN_ERR "%s - AE qpid 0x%x opcode %d status 0x%x " |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 72 | "type %d wrid.hi 0x%x wrid.lo 0x%x \n", __func__, |
Steve Wise | 8cfccf0 | 2007-03-06 14:44:03 -0600 | [diff] [blame] | 73 | CQE_QPID(rsp_msg->cqe), CQE_OPCODE(rsp_msg->cqe), |
| 74 | CQE_STATUS(rsp_msg->cqe), CQE_TYPE(rsp_msg->cqe), |
| 75 | CQE_WRID_HI(rsp_msg->cqe), CQE_WRID_LOW(rsp_msg->cqe)); |
| 76 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 77 | atomic_inc(&qhp->refcnt); |
| 78 | spin_unlock(&rnicp->lock); |
| 79 | |
Steve Wise | b955150 | 2010-10-21 12:37:06 +0000 | [diff] [blame] | 80 | if (qhp->attr.state == IWCH_QP_STATE_RTS) { |
| 81 | attrs.next_state = IWCH_QP_STATE_TERMINATE; |
| 82 | iwch_modify_qp(qhp->rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, |
| 83 | &attrs, 1); |
| 84 | if (send_term) |
| 85 | iwch_post_terminate(qhp, rsp_msg); |
| 86 | } |
| 87 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 88 | event.event = ib_event; |
| 89 | event.device = chp->ibcq.device; |
| 90 | if (ib_event == IB_EVENT_CQ_ERR) |
| 91 | event.element.cq = &chp->ibcq; |
| 92 | else |
| 93 | event.element.qp = &qhp->ibqp; |
| 94 | |
| 95 | if (qhp->ibqp.event_handler) |
| 96 | (*qhp->ibqp.event_handler)(&event, qhp->ibqp.qp_context); |
| 97 | |
Kumar Sanghvi | f7cc25d | 2011-10-24 21:20:22 +0530 | [diff] [blame] | 98 | spin_lock_irqsave(&chp->comp_handler_lock, flag); |
Steve Wise | b955150 | 2010-10-21 12:37:06 +0000 | [diff] [blame] | 99 | (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context); |
Kumar Sanghvi | f7cc25d | 2011-10-24 21:20:22 +0530 | [diff] [blame] | 100 | spin_unlock_irqrestore(&chp->comp_handler_lock, flag); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 101 | |
| 102 | if (atomic_dec_and_test(&qhp->refcnt)) |
| 103 | wake_up(&qhp->wait); |
| 104 | } |
| 105 | |
| 106 | void iwch_ev_dispatch(struct cxio_rdev *rdev_p, struct sk_buff *skb) |
| 107 | { |
| 108 | struct iwch_dev *rnicp; |
| 109 | struct respQ_msg_t *rsp_msg = (struct respQ_msg_t *) skb->data; |
| 110 | struct iwch_cq *chp; |
| 111 | struct iwch_qp *qhp; |
| 112 | u32 cqid = RSPQ_CQID(rsp_msg); |
Kumar Sanghvi | f7cc25d | 2011-10-24 21:20:22 +0530 | [diff] [blame] | 113 | unsigned long flag; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 114 | |
| 115 | rnicp = (struct iwch_dev *) rdev_p->ulp; |
| 116 | spin_lock(&rnicp->lock); |
| 117 | chp = get_chp(rnicp, cqid); |
| 118 | qhp = get_qhp(rnicp, CQE_QPID(rsp_msg->cqe)); |
| 119 | if (!chp || !qhp) { |
| 120 | printk(KERN_ERR MOD "BAD AE cqid 0x%x qpid 0x%x opcode %d " |
| 121 | "status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x \n", |
| 122 | cqid, CQE_QPID(rsp_msg->cqe), |
| 123 | CQE_OPCODE(rsp_msg->cqe), CQE_STATUS(rsp_msg->cqe), |
| 124 | CQE_TYPE(rsp_msg->cqe), CQE_WRID_HI(rsp_msg->cqe), |
| 125 | CQE_WRID_LOW(rsp_msg->cqe)); |
| 126 | spin_unlock(&rnicp->lock); |
| 127 | goto out; |
| 128 | } |
| 129 | iwch_qp_add_ref(&qhp->ibqp); |
| 130 | atomic_inc(&chp->refcnt); |
| 131 | spin_unlock(&rnicp->lock); |
| 132 | |
| 133 | /* |
| 134 | * 1) completion of our sending a TERMINATE. |
| 135 | * 2) incoming TERMINATE message. |
| 136 | */ |
| 137 | if ((CQE_OPCODE(rsp_msg->cqe) == T3_TERMINATE) && |
| 138 | (CQE_STATUS(rsp_msg->cqe) == 0)) { |
| 139 | if (SQ_TYPE(rsp_msg->cqe)) { |
| 140 | PDBG("%s QPID 0x%x ep %p disconnecting\n", |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 141 | __func__, qhp->wq.qpid, qhp->ep); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 142 | iwch_ep_disconnect(qhp->ep, 0, GFP_ATOMIC); |
| 143 | } else { |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 144 | PDBG("%s post REQ_ERR AE QPID 0x%x\n", __func__, |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 145 | qhp->wq.qpid); |
| 146 | post_qp_event(rnicp, chp, rsp_msg, |
| 147 | IB_EVENT_QP_REQ_ERR, 0); |
| 148 | iwch_ep_disconnect(qhp->ep, 0, GFP_ATOMIC); |
| 149 | } |
| 150 | goto done; |
| 151 | } |
| 152 | |
| 153 | /* Bad incoming Read request */ |
| 154 | if (SQ_TYPE(rsp_msg->cqe) && |
| 155 | (CQE_OPCODE(rsp_msg->cqe) == T3_READ_RESP)) { |
| 156 | post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_REQ_ERR, 1); |
| 157 | goto done; |
| 158 | } |
| 159 | |
| 160 | /* Bad incoming write */ |
| 161 | if (RQ_TYPE(rsp_msg->cqe) && |
| 162 | (CQE_OPCODE(rsp_msg->cqe) == T3_RDMA_WRITE)) { |
| 163 | post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_REQ_ERR, 1); |
| 164 | goto done; |
| 165 | } |
| 166 | |
| 167 | switch (CQE_STATUS(rsp_msg->cqe)) { |
| 168 | |
| 169 | /* Completion Events */ |
| 170 | case TPT_ERR_SUCCESS: |
| 171 | |
| 172 | /* |
| 173 | * Confirm the destination entry if this is a RECV completion. |
| 174 | */ |
| 175 | if (qhp->ep && SQ_TYPE(rsp_msg->cqe)) |
| 176 | dst_confirm(qhp->ep->dst); |
Kumar Sanghvi | f7cc25d | 2011-10-24 21:20:22 +0530 | [diff] [blame] | 177 | spin_lock_irqsave(&chp->comp_handler_lock, flag); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 178 | (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context); |
Kumar Sanghvi | f7cc25d | 2011-10-24 21:20:22 +0530 | [diff] [blame] | 179 | spin_unlock_irqrestore(&chp->comp_handler_lock, flag); |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 180 | break; |
| 181 | |
| 182 | case TPT_ERR_STAG: |
| 183 | case TPT_ERR_PDID: |
| 184 | case TPT_ERR_QPID: |
| 185 | case TPT_ERR_ACCESS: |
| 186 | case TPT_ERR_WRAP: |
| 187 | case TPT_ERR_BOUND: |
| 188 | case TPT_ERR_INVALIDATE_SHARED_MR: |
| 189 | case TPT_ERR_INVALIDATE_MR_WITH_MW_BOUND: |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 190 | post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_ACCESS_ERR, 1); |
| 191 | break; |
| 192 | |
| 193 | /* Device Fatal Errors */ |
| 194 | case TPT_ERR_ECC: |
| 195 | case TPT_ERR_ECC_PSTAG: |
| 196 | case TPT_ERR_INTERNAL_ERR: |
| 197 | post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_DEVICE_FATAL, 1); |
| 198 | break; |
| 199 | |
| 200 | /* QP Fatal Errors */ |
| 201 | case TPT_ERR_OUT_OF_RQE: |
| 202 | case TPT_ERR_PBL_ADDR_BOUND: |
| 203 | case TPT_ERR_CRC: |
| 204 | case TPT_ERR_MARKER: |
| 205 | case TPT_ERR_PDU_LEN_ERR: |
| 206 | case TPT_ERR_DDP_VERSION: |
| 207 | case TPT_ERR_RDMA_VERSION: |
| 208 | case TPT_ERR_OPCODE: |
| 209 | case TPT_ERR_DDP_QUEUE_NUM: |
| 210 | case TPT_ERR_MSN: |
| 211 | case TPT_ERR_TBIT: |
| 212 | case TPT_ERR_MO: |
| 213 | case TPT_ERR_MSN_GAP: |
| 214 | case TPT_ERR_MSN_RANGE: |
| 215 | case TPT_ERR_RQE_ADDR_BOUND: |
| 216 | case TPT_ERR_IRD_OVERFLOW: |
| 217 | post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_FATAL, 1); |
| 218 | break; |
| 219 | |
| 220 | default: |
| 221 | printk(KERN_ERR MOD "Unknown T3 status 0x%x QPID 0x%x\n", |
| 222 | CQE_STATUS(rsp_msg->cqe), qhp->wq.qpid); |
| 223 | post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_FATAL, 1); |
| 224 | break; |
| 225 | } |
| 226 | done: |
| 227 | if (atomic_dec_and_test(&chp->refcnt)) |
| 228 | wake_up(&chp->wait); |
| 229 | iwch_qp_rem_ref(&qhp->ibqp); |
| 230 | out: |
| 231 | dev_kfree_skb_irq(skb); |
| 232 | } |