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 38static void print_tpte(struct c4iw_dev *dev, u32 stag) 39{ 40 int ret; 41 struct fw_ri_tpte tpte; 42 43 ret = cxgb4_read_tpte(dev->rdev.lldi.ports[0], stag, 44 (__be32 *)&tpte); 45 if (ret) { 46 dev_err(&dev->rdev.lldi.pdev->dev, 47 "%s cxgb4_read_tpte err %d\n", __func__, ret); 48 return; 49 } 50 pr_debug("stag idx 0x%x valid %d key 0x%x state %d pdid %d perm 0x%x ps %d len 0x%llx va 0x%llx\n", 51 stag & 0xffffff00, 52 FW_RI_TPTE_VALID_G(ntohl(tpte.valid_to_pdid)), 53 FW_RI_TPTE_STAGKEY_G(ntohl(tpte.valid_to_pdid)), 54 FW_RI_TPTE_STAGSTATE_G(ntohl(tpte.valid_to_pdid)), 55 FW_RI_TPTE_PDID_G(ntohl(tpte.valid_to_pdid)), 56 FW_RI_TPTE_PERM_G(ntohl(tpte.locread_to_qpid)), 57 FW_RI_TPTE_PS_G(ntohl(tpte.locread_to_qpid)), 58 ((u64)ntohl(tpte.len_hi) << 32) | ntohl(tpte.len_lo), 59 ((u64)ntohl(tpte.va_hi) << 32) | ntohl(tpte.va_lo_fbo)); 60} 61 62static void dump_err_cqe(struct c4iw_dev *dev, struct t4_cqe *err_cqe) 63{ 64 __be64 *p = (void *)err_cqe; 65 66 dev_err(&dev->rdev.lldi.pdev->dev, 67 "AE qpid %d opcode %d status 0x%x " 68 "type %d len 0x%x wrid.hi 0x%x wrid.lo 0x%x\n", 69 CQE_QPID(err_cqe), CQE_OPCODE(err_cqe), 70 CQE_STATUS(err_cqe), CQE_TYPE(err_cqe), ntohl(err_cqe->len), 71 CQE_WRID_HI(err_cqe), CQE_WRID_LOW(err_cqe)); 72 73 pr_debug("%016llx %016llx %016llx %016llx - %016llx %016llx %016llx %016llx\n", 74 be64_to_cpu(p[0]), be64_to_cpu(p[1]), be64_to_cpu(p[2]), 75 be64_to_cpu(p[3]), be64_to_cpu(p[4]), be64_to_cpu(p[5]), 76 be64_to_cpu(p[6]), be64_to_cpu(p[7])); 77 78 /* 79 * Ingress WRITE and READ_RESP errors provide 80 * the offending stag, so parse and log it. 81 */ 82 if (RQ_TYPE(err_cqe) && (CQE_OPCODE(err_cqe) == FW_RI_RDMA_WRITE || 83 CQE_OPCODE(err_cqe) == FW_RI_READ_RESP)) 84 print_tpte(dev, CQE_WRID_STAG(err_cqe)); 85} 86 87static void post_qp_event(struct c4iw_dev *dev, struct c4iw_cq *chp, 88 struct c4iw_qp *qhp, 89 struct t4_cqe *err_cqe, 90 enum ib_event_type ib_event) 91{ 92 struct ib_event event; 93 struct c4iw_qp_attributes attrs; 94 unsigned long flag; 95 96 dump_err_cqe(dev, err_cqe); 97 98 if (qhp->attr.state == C4IW_QP_STATE_RTS) { 99 attrs.next_state = C4IW_QP_STATE_TERMINATE; 100 c4iw_modify_qp(qhp->rhp, qhp, C4IW_QP_ATTR_NEXT_STATE, 101 &attrs, 0); 102 } 103 104 event.event = ib_event; 105 event.device = chp->ibcq.device; 106 if (ib_event == IB_EVENT_CQ_ERR) 107 event.element.cq = &chp->ibcq; 108 else 109 event.element.qp = &qhp->ibqp; 110 if (qhp->ibqp.event_handler) 111 (*qhp->ibqp.event_handler)(&event, qhp->ibqp.qp_context); 112 113 if (t4_clear_cq_armed(&chp->cq)) { 114 spin_lock_irqsave(&chp->comp_handler_lock, flag); 115 (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context); 116 spin_unlock_irqrestore(&chp->comp_handler_lock, flag); 117 } 118} 119 120void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe) 121{ 122 struct c4iw_cq *chp; 123 struct c4iw_qp *qhp; 124 u32 cqid; 125 126 xa_lock_irq(&dev->qps); 127 qhp = xa_load(&dev->qps, CQE_QPID(err_cqe)); 128 if (!qhp) { 129 pr_err("BAD AE qpid 0x%x opcode %d status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x\n", 130 CQE_QPID(err_cqe), 131 CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe), 132 CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe), 133 CQE_WRID_LOW(err_cqe)); 134 xa_unlock_irq(&dev->qps); 135 goto out; 136 } 137 138 if (SQ_TYPE(err_cqe)) 139 cqid = qhp->attr.scq; 140 else 141 cqid = qhp->attr.rcq; 142 chp = get_chp(dev, cqid); 143 if (!chp) { 144 pr_err("BAD AE cqid 0x%x qpid 0x%x opcode %d status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x\n", 145 cqid, CQE_QPID(err_cqe), 146 CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe), 147 CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe), 148 CQE_WRID_LOW(err_cqe)); 149 xa_unlock_irq(&dev->qps); 150 goto out; 151 } 152 153 c4iw_qp_add_ref(&qhp->ibqp); 154 refcount_inc(&chp->refcnt); 155 xa_unlock_irq(&dev->qps); 156 157 /* Bad incoming write */ 158 if (RQ_TYPE(err_cqe) && 159 (CQE_OPCODE(err_cqe) == FW_RI_RDMA_WRITE)) { 160 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_REQ_ERR); 161 goto done; 162 } 163 164 switch (CQE_STATUS(err_cqe)) { 165 166 /* Completion Events */ 167 case T4_ERR_SUCCESS: 168 pr_err("AE with status 0!\n"); 169 break; 170 171 case T4_ERR_STAG: 172 case T4_ERR_PDID: 173 case T4_ERR_QPID: 174 case T4_ERR_ACCESS: 175 case T4_ERR_WRAP: 176 case T4_ERR_BOUND: 177 case T4_ERR_INVALIDATE_SHARED_MR: 178 case T4_ERR_INVALIDATE_MR_WITH_MW_BOUND: 179 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_ACCESS_ERR); 180 break; 181 182 /* Device Fatal Errors */ 183 case T4_ERR_ECC: 184 case T4_ERR_ECC_PSTAG: 185 case T4_ERR_INTERNAL_ERR: 186 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_DEVICE_FATAL); 187 break; 188 189 /* QP Fatal Errors */ 190 case T4_ERR_OUT_OF_RQE: 191 case T4_ERR_PBL_ADDR_BOUND: 192 case T4_ERR_CRC: 193 case T4_ERR_MARKER: 194 case T4_ERR_PDU_LEN_ERR: 195 case T4_ERR_DDP_VERSION: 196 case T4_ERR_RDMA_VERSION: 197 case T4_ERR_OPCODE: 198 case T4_ERR_DDP_QUEUE_NUM: 199 case T4_ERR_MSN: 200 case T4_ERR_TBIT: 201 case T4_ERR_MO: 202 case T4_ERR_MSN_GAP: 203 case T4_ERR_MSN_RANGE: 204 case T4_ERR_RQE_ADDR_BOUND: 205 case T4_ERR_IRD_OVERFLOW: 206 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_FATAL); 207 break; 208 209 default: 210 pr_err("Unknown T4 status 0x%x QPID 0x%x\n", 211 CQE_STATUS(err_cqe), qhp->wq.sq.qid); 212 post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_FATAL); 213 break; 214 } 215done: 216 c4iw_cq_rem_ref(chp); 217 c4iw_qp_rem_ref(&qhp->ibqp); 218out: 219 return; 220} 221 222int c4iw_ev_handler(struct c4iw_dev *dev, u32 qid) 223{ 224 struct c4iw_cq *chp; 225 unsigned long flag; 226 227 xa_lock_irqsave(&dev->cqs, flag); 228 chp = xa_load(&dev->cqs, qid); 229 if (chp) { 230 refcount_inc(&chp->refcnt); 231 xa_unlock_irqrestore(&dev->cqs, flag); 232 t4_clear_cq_armed(&chp->cq); 233 spin_lock_irqsave(&chp->comp_handler_lock, flag); 234 (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context); 235 spin_unlock_irqrestore(&chp->comp_handler_lock, flag); 236 c4iw_cq_rem_ref(chp); 237 } else { 238 pr_debug("unknown cqid 0x%x\n", qid); 239 xa_unlock_irqrestore(&dev->cqs, flag); 240 } 241 return 0; 242} 243