James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1 | /******************************************************************* |
| 2 | * This file is part of the Emulex Linux Device Driver for * |
| 3 | * Fibre Channel Host Bus Adapters. * |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 4 | * Copyright (C) 2009-2010 Emulex. All rights reserved. * |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 5 | * EMULEX and SLI are trademarks of Emulex. * |
| 6 | * www.emulex.com * |
| 7 | * * |
| 8 | * This program is free software; you can redistribute it and/or * |
| 9 | * modify it under the terms of version 2 of the GNU General * |
| 10 | * Public License as published by the Free Software Foundation. * |
| 11 | * This program is distributed in the hope that it will be useful. * |
| 12 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * |
| 13 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * |
| 14 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * |
| 15 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * |
| 16 | * TO BE LEGALLY INVALID. See the GNU General Public License for * |
| 17 | * more details, a copy of which can be found in the file COPYING * |
| 18 | * included with this package. * |
| 19 | *******************************************************************/ |
| 20 | |
| 21 | #include <linux/interrupt.h> |
| 22 | #include <linux/mempool.h> |
| 23 | #include <linux/pci.h> |
| 24 | |
| 25 | #include <scsi/scsi.h> |
| 26 | #include <scsi/scsi_host.h> |
| 27 | #include <scsi/scsi_transport_fc.h> |
| 28 | #include <scsi/scsi_bsg_fc.h> |
James Smart | 6a9c52c | 2009-10-02 15:16:51 -0400 | [diff] [blame] | 29 | #include <scsi/fc/fc_fs.h> |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 30 | |
| 31 | #include "lpfc_hw4.h" |
| 32 | #include "lpfc_hw.h" |
| 33 | #include "lpfc_sli.h" |
| 34 | #include "lpfc_sli4.h" |
| 35 | #include "lpfc_nl.h" |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 36 | #include "lpfc_bsg.h" |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 37 | #include "lpfc_disc.h" |
| 38 | #include "lpfc_scsi.h" |
| 39 | #include "lpfc.h" |
| 40 | #include "lpfc_logmsg.h" |
| 41 | #include "lpfc_crtn.h" |
| 42 | #include "lpfc_vport.h" |
| 43 | #include "lpfc_version.h" |
| 44 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 45 | struct lpfc_bsg_event { |
| 46 | struct list_head node; |
| 47 | struct kref kref; |
| 48 | wait_queue_head_t wq; |
| 49 | |
| 50 | /* Event type and waiter identifiers */ |
| 51 | uint32_t type_mask; |
| 52 | uint32_t req_id; |
| 53 | uint32_t reg_id; |
| 54 | |
| 55 | /* next two flags are here for the auto-delete logic */ |
| 56 | unsigned long wait_time_stamp; |
| 57 | int waiting; |
| 58 | |
| 59 | /* seen and not seen events */ |
| 60 | struct list_head events_to_get; |
| 61 | struct list_head events_to_see; |
| 62 | |
| 63 | /* job waiting for this event to finish */ |
| 64 | struct fc_bsg_job *set_job; |
| 65 | }; |
| 66 | |
| 67 | struct lpfc_bsg_iocb { |
| 68 | struct lpfc_iocbq *cmdiocbq; |
| 69 | struct lpfc_iocbq *rspiocbq; |
| 70 | struct lpfc_dmabuf *bmp; |
| 71 | struct lpfc_nodelist *ndlp; |
| 72 | |
| 73 | /* job waiting for this iocb to finish */ |
| 74 | struct fc_bsg_job *set_job; |
| 75 | }; |
| 76 | |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 77 | struct lpfc_bsg_mbox { |
| 78 | LPFC_MBOXQ_t *pmboxq; |
| 79 | MAILBOX_t *mb; |
| 80 | |
| 81 | /* job waiting for this mbox command to finish */ |
| 82 | struct fc_bsg_job *set_job; |
| 83 | }; |
| 84 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 85 | #define TYPE_EVT 1 |
| 86 | #define TYPE_IOCB 2 |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 87 | #define TYPE_MBOX 3 |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 88 | struct bsg_job_data { |
| 89 | uint32_t type; |
| 90 | union { |
| 91 | struct lpfc_bsg_event *evt; |
| 92 | struct lpfc_bsg_iocb iocb; |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 93 | struct lpfc_bsg_mbox mbox; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 94 | } context_un; |
| 95 | }; |
| 96 | |
| 97 | struct event_data { |
| 98 | struct list_head node; |
| 99 | uint32_t type; |
| 100 | uint32_t immed_dat; |
| 101 | void *data; |
| 102 | uint32_t len; |
| 103 | }; |
| 104 | |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 105 | #define BUF_SZ_4K 4096 |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 106 | #define SLI_CT_ELX_LOOPBACK 0x10 |
| 107 | |
| 108 | enum ELX_LOOPBACK_CMD { |
| 109 | ELX_LOOPBACK_XRI_SETUP, |
| 110 | ELX_LOOPBACK_DATA, |
| 111 | }; |
| 112 | |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 113 | #define ELX_LOOPBACK_HEADER_SZ \ |
| 114 | (size_t)(&((struct lpfc_sli_ct_request *)NULL)->un) |
| 115 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 116 | struct lpfc_dmabufext { |
| 117 | struct lpfc_dmabuf dma; |
| 118 | uint32_t size; |
| 119 | uint32_t flag; |
| 120 | }; |
| 121 | |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 122 | /** |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 123 | * lpfc_bsg_send_mgmt_cmd_cmp - lpfc_bsg_send_mgmt_cmd's completion handler |
| 124 | * @phba: Pointer to HBA context object. |
| 125 | * @cmdiocbq: Pointer to command iocb. |
| 126 | * @rspiocbq: Pointer to response iocb. |
| 127 | * |
| 128 | * This function is the completion handler for iocbs issued using |
| 129 | * lpfc_bsg_send_mgmt_cmd function. This function is called by the |
| 130 | * ring event handler function without any lock held. This function |
| 131 | * can be called from both worker thread context and interrupt |
| 132 | * context. This function also can be called from another thread which |
| 133 | * cleans up the SLI layer objects. |
| 134 | * This function copies the contents of the response iocb to the |
| 135 | * response iocb memory object provided by the caller of |
| 136 | * lpfc_sli_issue_iocb_wait and then wakes up the thread which |
| 137 | * sleeps for the iocb completion. |
| 138 | **/ |
| 139 | static void |
| 140 | lpfc_bsg_send_mgmt_cmd_cmp(struct lpfc_hba *phba, |
| 141 | struct lpfc_iocbq *cmdiocbq, |
| 142 | struct lpfc_iocbq *rspiocbq) |
| 143 | { |
| 144 | unsigned long iflags; |
| 145 | struct bsg_job_data *dd_data; |
| 146 | struct fc_bsg_job *job; |
| 147 | IOCB_t *rsp; |
| 148 | struct lpfc_dmabuf *bmp; |
| 149 | struct lpfc_nodelist *ndlp; |
| 150 | struct lpfc_bsg_iocb *iocb; |
| 151 | unsigned long flags; |
| 152 | int rc = 0; |
| 153 | |
| 154 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
| 155 | dd_data = cmdiocbq->context1; |
| 156 | if (!dd_data) { |
| 157 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 158 | return; |
| 159 | } |
| 160 | |
| 161 | iocb = &dd_data->context_un.iocb; |
| 162 | job = iocb->set_job; |
| 163 | job->dd_data = NULL; /* so timeout handler does not reply */ |
| 164 | |
| 165 | spin_lock_irqsave(&phba->hbalock, iflags); |
| 166 | cmdiocbq->iocb_flag |= LPFC_IO_WAKE; |
| 167 | if (cmdiocbq->context2 && rspiocbq) |
| 168 | memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb, |
| 169 | &rspiocbq->iocb, sizeof(IOCB_t)); |
| 170 | spin_unlock_irqrestore(&phba->hbalock, iflags); |
| 171 | |
| 172 | bmp = iocb->bmp; |
| 173 | rspiocbq = iocb->rspiocbq; |
| 174 | rsp = &rspiocbq->iocb; |
| 175 | ndlp = iocb->ndlp; |
| 176 | |
| 177 | pci_unmap_sg(phba->pcidev, job->request_payload.sg_list, |
| 178 | job->request_payload.sg_cnt, DMA_TO_DEVICE); |
| 179 | pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list, |
| 180 | job->reply_payload.sg_cnt, DMA_FROM_DEVICE); |
| 181 | |
| 182 | if (rsp->ulpStatus) { |
| 183 | if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) { |
| 184 | switch (rsp->un.ulpWord[4] & 0xff) { |
| 185 | case IOERR_SEQUENCE_TIMEOUT: |
| 186 | rc = -ETIMEDOUT; |
| 187 | break; |
| 188 | case IOERR_INVALID_RPI: |
| 189 | rc = -EFAULT; |
| 190 | break; |
| 191 | default: |
| 192 | rc = -EACCES; |
| 193 | break; |
| 194 | } |
| 195 | } else |
| 196 | rc = -EACCES; |
| 197 | } else |
| 198 | job->reply->reply_payload_rcv_len = |
| 199 | rsp->un.genreq64.bdl.bdeSize; |
| 200 | |
| 201 | lpfc_mbuf_free(phba, bmp->virt, bmp->phys); |
| 202 | lpfc_sli_release_iocbq(phba, rspiocbq); |
| 203 | lpfc_sli_release_iocbq(phba, cmdiocbq); |
| 204 | lpfc_nlp_put(ndlp); |
| 205 | kfree(bmp); |
| 206 | kfree(dd_data); |
| 207 | /* make error code available to userspace */ |
| 208 | job->reply->result = rc; |
| 209 | /* complete the job back to userspace */ |
| 210 | job->job_done(job); |
| 211 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 212 | return; |
| 213 | } |
| 214 | |
| 215 | /** |
| 216 | * lpfc_bsg_send_mgmt_cmd - send a CT command from a bsg request |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 217 | * @job: fc_bsg_job to handle |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 218 | **/ |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 219 | static int |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 220 | lpfc_bsg_send_mgmt_cmd(struct fc_bsg_job *job) |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 221 | { |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 222 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
| 223 | struct lpfc_hba *phba = vport->phba; |
| 224 | struct lpfc_rport_data *rdata = job->rport->dd_data; |
| 225 | struct lpfc_nodelist *ndlp = rdata->pnode; |
| 226 | struct ulp_bde64 *bpl = NULL; |
| 227 | uint32_t timeout; |
| 228 | struct lpfc_iocbq *cmdiocbq = NULL; |
| 229 | struct lpfc_iocbq *rspiocbq = NULL; |
| 230 | IOCB_t *cmd; |
| 231 | IOCB_t *rsp; |
| 232 | struct lpfc_dmabuf *bmp = NULL; |
| 233 | int request_nseg; |
| 234 | int reply_nseg; |
| 235 | struct scatterlist *sgel = NULL; |
| 236 | int numbde; |
| 237 | dma_addr_t busaddr; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 238 | struct bsg_job_data *dd_data; |
| 239 | uint32_t creg_val; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 240 | int rc = 0; |
| 241 | |
| 242 | /* in case no data is transferred */ |
| 243 | job->reply->reply_payload_rcv_len = 0; |
| 244 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 245 | /* allocate our bsg tracking structure */ |
| 246 | dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); |
| 247 | if (!dd_data) { |
| 248 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 249 | "2733 Failed allocation of dd_data\n"); |
| 250 | rc = -ENOMEM; |
| 251 | goto no_dd_data; |
| 252 | } |
| 253 | |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 254 | if (!lpfc_nlp_get(ndlp)) { |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 255 | rc = -ENODEV; |
| 256 | goto no_ndlp; |
| 257 | } |
| 258 | |
| 259 | bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); |
| 260 | if (!bmp) { |
| 261 | rc = -ENOMEM; |
| 262 | goto free_ndlp; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 263 | } |
| 264 | |
| 265 | if (ndlp->nlp_flag & NLP_ELS_SND_MASK) { |
| 266 | rc = -ENODEV; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 267 | goto free_bmp; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 268 | } |
| 269 | |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 270 | cmdiocbq = lpfc_sli_get_iocbq(phba); |
| 271 | if (!cmdiocbq) { |
| 272 | rc = -ENOMEM; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 273 | goto free_bmp; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 274 | } |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 275 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 276 | cmd = &cmdiocbq->iocb; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 277 | rspiocbq = lpfc_sli_get_iocbq(phba); |
| 278 | if (!rspiocbq) { |
| 279 | rc = -ENOMEM; |
| 280 | goto free_cmdiocbq; |
| 281 | } |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 282 | |
| 283 | rsp = &rspiocbq->iocb; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 284 | bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys); |
| 285 | if (!bmp->virt) { |
| 286 | rc = -ENOMEM; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 287 | goto free_rspiocbq; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 288 | } |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 289 | |
| 290 | INIT_LIST_HEAD(&bmp->list); |
| 291 | bpl = (struct ulp_bde64 *) bmp->virt; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 292 | request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list, |
| 293 | job->request_payload.sg_cnt, DMA_TO_DEVICE); |
| 294 | for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) { |
| 295 | busaddr = sg_dma_address(sgel); |
| 296 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; |
| 297 | bpl->tus.f.bdeSize = sg_dma_len(sgel); |
| 298 | bpl->tus.w = cpu_to_le32(bpl->tus.w); |
| 299 | bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); |
| 300 | bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); |
| 301 | bpl++; |
| 302 | } |
| 303 | |
| 304 | reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list, |
| 305 | job->reply_payload.sg_cnt, DMA_FROM_DEVICE); |
| 306 | for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) { |
| 307 | busaddr = sg_dma_address(sgel); |
| 308 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; |
| 309 | bpl->tus.f.bdeSize = sg_dma_len(sgel); |
| 310 | bpl->tus.w = cpu_to_le32(bpl->tus.w); |
| 311 | bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); |
| 312 | bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); |
| 313 | bpl++; |
| 314 | } |
| 315 | |
| 316 | cmd->un.genreq64.bdl.ulpIoTag32 = 0; |
| 317 | cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys); |
| 318 | cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys); |
| 319 | cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64; |
| 320 | cmd->un.genreq64.bdl.bdeSize = |
| 321 | (request_nseg + reply_nseg) * sizeof(struct ulp_bde64); |
| 322 | cmd->ulpCommand = CMD_GEN_REQUEST64_CR; |
| 323 | cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA); |
| 324 | cmd->un.genreq64.w5.hcsw.Dfctl = 0; |
James Smart | 6a9c52c | 2009-10-02 15:16:51 -0400 | [diff] [blame] | 325 | cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL; |
| 326 | cmd->un.genreq64.w5.hcsw.Type = FC_TYPE_CT; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 327 | cmd->ulpBdeCount = 1; |
| 328 | cmd->ulpLe = 1; |
| 329 | cmd->ulpClass = CLASS3; |
| 330 | cmd->ulpContext = ndlp->nlp_rpi; |
| 331 | cmd->ulpOwner = OWN_CHIP; |
| 332 | cmdiocbq->vport = phba->pport; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 333 | cmdiocbq->context3 = bmp; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 334 | cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 335 | timeout = phba->fc_ratov * 2; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 336 | cmd->ulpTimeout = timeout; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 337 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 338 | cmdiocbq->iocb_cmpl = lpfc_bsg_send_mgmt_cmd_cmp; |
| 339 | cmdiocbq->context1 = dd_data; |
| 340 | cmdiocbq->context2 = rspiocbq; |
| 341 | dd_data->type = TYPE_IOCB; |
| 342 | dd_data->context_un.iocb.cmdiocbq = cmdiocbq; |
| 343 | dd_data->context_un.iocb.rspiocbq = rspiocbq; |
| 344 | dd_data->context_un.iocb.set_job = job; |
| 345 | dd_data->context_un.iocb.bmp = bmp; |
| 346 | dd_data->context_un.iocb.ndlp = ndlp; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 347 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 348 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) { |
| 349 | creg_val = readl(phba->HCregaddr); |
| 350 | creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING); |
| 351 | writel(creg_val, phba->HCregaddr); |
| 352 | readl(phba->HCregaddr); /* flush */ |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 353 | } |
| 354 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 355 | rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 356 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 357 | if (rc == IOCB_SUCCESS) |
| 358 | return 0; /* done for now */ |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 359 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 360 | /* iocb failed so cleanup */ |
| 361 | pci_unmap_sg(phba->pcidev, job->request_payload.sg_list, |
| 362 | job->request_payload.sg_cnt, DMA_TO_DEVICE); |
| 363 | pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list, |
| 364 | job->reply_payload.sg_cnt, DMA_FROM_DEVICE); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 365 | |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 366 | lpfc_mbuf_free(phba, bmp->virt, bmp->phys); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 367 | |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 368 | free_rspiocbq: |
| 369 | lpfc_sli_release_iocbq(phba, rspiocbq); |
| 370 | free_cmdiocbq: |
| 371 | lpfc_sli_release_iocbq(phba, cmdiocbq); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 372 | free_bmp: |
| 373 | kfree(bmp); |
| 374 | free_ndlp: |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 375 | lpfc_nlp_put(ndlp); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 376 | no_ndlp: |
| 377 | kfree(dd_data); |
| 378 | no_dd_data: |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 379 | /* make error code available to userspace */ |
| 380 | job->reply->result = rc; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 381 | job->dd_data = NULL; |
| 382 | return rc; |
| 383 | } |
| 384 | |
| 385 | /** |
| 386 | * lpfc_bsg_rport_els_cmp - lpfc_bsg_rport_els's completion handler |
| 387 | * @phba: Pointer to HBA context object. |
| 388 | * @cmdiocbq: Pointer to command iocb. |
| 389 | * @rspiocbq: Pointer to response iocb. |
| 390 | * |
| 391 | * This function is the completion handler for iocbs issued using |
| 392 | * lpfc_bsg_rport_els_cmp function. This function is called by the |
| 393 | * ring event handler function without any lock held. This function |
| 394 | * can be called from both worker thread context and interrupt |
| 395 | * context. This function also can be called from other thread which |
| 396 | * cleans up the SLI layer objects. |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 397 | * This function copies the contents of the response iocb to the |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 398 | * response iocb memory object provided by the caller of |
| 399 | * lpfc_sli_issue_iocb_wait and then wakes up the thread which |
| 400 | * sleeps for the iocb completion. |
| 401 | **/ |
| 402 | static void |
| 403 | lpfc_bsg_rport_els_cmp(struct lpfc_hba *phba, |
| 404 | struct lpfc_iocbq *cmdiocbq, |
| 405 | struct lpfc_iocbq *rspiocbq) |
| 406 | { |
| 407 | struct bsg_job_data *dd_data; |
| 408 | struct fc_bsg_job *job; |
| 409 | IOCB_t *rsp; |
| 410 | struct lpfc_nodelist *ndlp; |
| 411 | struct lpfc_dmabuf *pbuflist = NULL; |
| 412 | struct fc_bsg_ctels_reply *els_reply; |
| 413 | uint8_t *rjt_data; |
| 414 | unsigned long flags; |
| 415 | int rc = 0; |
| 416 | |
| 417 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
| 418 | dd_data = cmdiocbq->context1; |
| 419 | /* normal completion and timeout crossed paths, already done */ |
| 420 | if (!dd_data) { |
| 421 | spin_unlock_irqrestore(&phba->hbalock, flags); |
| 422 | return; |
| 423 | } |
| 424 | |
| 425 | cmdiocbq->iocb_flag |= LPFC_IO_WAKE; |
| 426 | if (cmdiocbq->context2 && rspiocbq) |
| 427 | memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb, |
| 428 | &rspiocbq->iocb, sizeof(IOCB_t)); |
| 429 | |
| 430 | job = dd_data->context_un.iocb.set_job; |
| 431 | cmdiocbq = dd_data->context_un.iocb.cmdiocbq; |
| 432 | rspiocbq = dd_data->context_un.iocb.rspiocbq; |
| 433 | rsp = &rspiocbq->iocb; |
| 434 | ndlp = dd_data->context_un.iocb.ndlp; |
| 435 | |
| 436 | pci_unmap_sg(phba->pcidev, job->request_payload.sg_list, |
| 437 | job->request_payload.sg_cnt, DMA_TO_DEVICE); |
| 438 | pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list, |
| 439 | job->reply_payload.sg_cnt, DMA_FROM_DEVICE); |
| 440 | |
| 441 | if (job->reply->result == -EAGAIN) |
| 442 | rc = -EAGAIN; |
| 443 | else if (rsp->ulpStatus == IOSTAT_SUCCESS) |
| 444 | job->reply->reply_payload_rcv_len = |
| 445 | rsp->un.elsreq64.bdl.bdeSize; |
| 446 | else if (rsp->ulpStatus == IOSTAT_LS_RJT) { |
| 447 | job->reply->reply_payload_rcv_len = |
| 448 | sizeof(struct fc_bsg_ctels_reply); |
| 449 | /* LS_RJT data returned in word 4 */ |
| 450 | rjt_data = (uint8_t *)&rsp->un.ulpWord[4]; |
| 451 | els_reply = &job->reply->reply_data.ctels_reply; |
| 452 | els_reply->status = FC_CTELS_STATUS_REJECT; |
| 453 | els_reply->rjt_data.action = rjt_data[3]; |
| 454 | els_reply->rjt_data.reason_code = rjt_data[2]; |
| 455 | els_reply->rjt_data.reason_explanation = rjt_data[1]; |
| 456 | els_reply->rjt_data.vendor_unique = rjt_data[0]; |
| 457 | } else |
| 458 | rc = -EIO; |
| 459 | |
| 460 | pbuflist = (struct lpfc_dmabuf *) cmdiocbq->context3; |
| 461 | lpfc_mbuf_free(phba, pbuflist->virt, pbuflist->phys); |
| 462 | lpfc_sli_release_iocbq(phba, rspiocbq); |
| 463 | lpfc_sli_release_iocbq(phba, cmdiocbq); |
| 464 | lpfc_nlp_put(ndlp); |
| 465 | kfree(dd_data); |
| 466 | /* make error code available to userspace */ |
| 467 | job->reply->result = rc; |
| 468 | job->dd_data = NULL; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 469 | /* complete the job back to userspace */ |
| 470 | job->job_done(job); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 471 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 472 | return; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 473 | } |
| 474 | |
| 475 | /** |
| 476 | * lpfc_bsg_rport_els - send an ELS command from a bsg request |
| 477 | * @job: fc_bsg_job to handle |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 478 | **/ |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 479 | static int |
| 480 | lpfc_bsg_rport_els(struct fc_bsg_job *job) |
| 481 | { |
| 482 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
| 483 | struct lpfc_hba *phba = vport->phba; |
| 484 | struct lpfc_rport_data *rdata = job->rport->dd_data; |
| 485 | struct lpfc_nodelist *ndlp = rdata->pnode; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 486 | uint32_t elscmd; |
| 487 | uint32_t cmdsize; |
| 488 | uint32_t rspsize; |
| 489 | struct lpfc_iocbq *rspiocbq; |
| 490 | struct lpfc_iocbq *cmdiocbq; |
| 491 | IOCB_t *rsp; |
| 492 | uint16_t rpi = 0; |
| 493 | struct lpfc_dmabuf *pcmd; |
| 494 | struct lpfc_dmabuf *prsp; |
| 495 | struct lpfc_dmabuf *pbuflist = NULL; |
| 496 | struct ulp_bde64 *bpl; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 497 | int request_nseg; |
| 498 | int reply_nseg; |
| 499 | struct scatterlist *sgel = NULL; |
| 500 | int numbde; |
| 501 | dma_addr_t busaddr; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 502 | struct bsg_job_data *dd_data; |
| 503 | uint32_t creg_val; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 504 | int rc = 0; |
| 505 | |
| 506 | /* in case no data is transferred */ |
| 507 | job->reply->reply_payload_rcv_len = 0; |
| 508 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 509 | /* allocate our bsg tracking structure */ |
| 510 | dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); |
| 511 | if (!dd_data) { |
| 512 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 513 | "2735 Failed allocation of dd_data\n"); |
| 514 | rc = -ENOMEM; |
| 515 | goto no_dd_data; |
| 516 | } |
| 517 | |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 518 | if (!lpfc_nlp_get(ndlp)) { |
| 519 | rc = -ENODEV; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 520 | goto free_dd_data; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 521 | } |
| 522 | |
| 523 | elscmd = job->request->rqst_data.r_els.els_code; |
| 524 | cmdsize = job->request_payload.payload_len; |
| 525 | rspsize = job->reply_payload.payload_len; |
| 526 | rspiocbq = lpfc_sli_get_iocbq(phba); |
| 527 | if (!rspiocbq) { |
| 528 | lpfc_nlp_put(ndlp); |
| 529 | rc = -ENOMEM; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 530 | goto free_dd_data; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 531 | } |
| 532 | |
| 533 | rsp = &rspiocbq->iocb; |
| 534 | rpi = ndlp->nlp_rpi; |
| 535 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 536 | cmdiocbq = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 537 | ndlp->nlp_DID, elscmd); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 538 | if (!cmdiocbq) { |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 539 | rc = -EIO; |
| 540 | goto free_rspiocbq; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 541 | } |
| 542 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 543 | /* prep els iocb set context1 to the ndlp, context2 to the command |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 544 | * dmabuf, context3 holds the data dmabuf |
| 545 | */ |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 546 | pcmd = (struct lpfc_dmabuf *) cmdiocbq->context2; |
| 547 | prsp = (struct lpfc_dmabuf *) pcmd->list.next; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 548 | lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys); |
| 549 | kfree(pcmd); |
| 550 | lpfc_mbuf_free(phba, prsp->virt, prsp->phys); |
| 551 | kfree(prsp); |
| 552 | cmdiocbq->context2 = NULL; |
| 553 | |
| 554 | pbuflist = (struct lpfc_dmabuf *) cmdiocbq->context3; |
| 555 | bpl = (struct ulp_bde64 *) pbuflist->virt; |
| 556 | |
| 557 | request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list, |
| 558 | job->request_payload.sg_cnt, DMA_TO_DEVICE); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 559 | for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) { |
| 560 | busaddr = sg_dma_address(sgel); |
| 561 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; |
| 562 | bpl->tus.f.bdeSize = sg_dma_len(sgel); |
| 563 | bpl->tus.w = cpu_to_le32(bpl->tus.w); |
| 564 | bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); |
| 565 | bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); |
| 566 | bpl++; |
| 567 | } |
| 568 | |
| 569 | reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list, |
| 570 | job->reply_payload.sg_cnt, DMA_FROM_DEVICE); |
| 571 | for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) { |
| 572 | busaddr = sg_dma_address(sgel); |
| 573 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; |
| 574 | bpl->tus.f.bdeSize = sg_dma_len(sgel); |
| 575 | bpl->tus.w = cpu_to_le32(bpl->tus.w); |
| 576 | bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); |
| 577 | bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); |
| 578 | bpl++; |
| 579 | } |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 580 | cmdiocbq->iocb.un.elsreq64.bdl.bdeSize = |
| 581 | (request_nseg + reply_nseg) * sizeof(struct ulp_bde64); |
| 582 | cmdiocbq->iocb.ulpContext = rpi; |
| 583 | cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC; |
| 584 | cmdiocbq->context1 = NULL; |
| 585 | cmdiocbq->context2 = NULL; |
| 586 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 587 | cmdiocbq->iocb_cmpl = lpfc_bsg_rport_els_cmp; |
| 588 | cmdiocbq->context1 = dd_data; |
| 589 | cmdiocbq->context2 = rspiocbq; |
| 590 | dd_data->type = TYPE_IOCB; |
| 591 | dd_data->context_un.iocb.cmdiocbq = cmdiocbq; |
| 592 | dd_data->context_un.iocb.rspiocbq = rspiocbq; |
| 593 | dd_data->context_un.iocb.set_job = job; |
| 594 | dd_data->context_un.iocb.bmp = NULL;; |
| 595 | dd_data->context_un.iocb.ndlp = ndlp; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 596 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 597 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) { |
| 598 | creg_val = readl(phba->HCregaddr); |
| 599 | creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING); |
| 600 | writel(creg_val, phba->HCregaddr); |
| 601 | readl(phba->HCregaddr); /* flush */ |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 602 | } |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 603 | rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0); |
| 604 | lpfc_nlp_put(ndlp); |
| 605 | if (rc == IOCB_SUCCESS) |
| 606 | return 0; /* done for now */ |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 607 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 608 | pci_unmap_sg(phba->pcidev, job->request_payload.sg_list, |
| 609 | job->request_payload.sg_cnt, DMA_TO_DEVICE); |
| 610 | pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list, |
| 611 | job->reply_payload.sg_cnt, DMA_FROM_DEVICE); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 612 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 613 | lpfc_mbuf_free(phba, pbuflist->virt, pbuflist->phys); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 614 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 615 | lpfc_sli_release_iocbq(phba, cmdiocbq); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 616 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 617 | free_rspiocbq: |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 618 | lpfc_sli_release_iocbq(phba, rspiocbq); |
| 619 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 620 | free_dd_data: |
| 621 | kfree(dd_data); |
| 622 | |
| 623 | no_dd_data: |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 624 | /* make error code available to userspace */ |
| 625 | job->reply->result = rc; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 626 | job->dd_data = NULL; |
| 627 | return rc; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 628 | } |
| 629 | |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 630 | /** |
| 631 | * lpfc_bsg_event_free - frees an allocated event structure |
| 632 | * @kref: Pointer to a kref. |
| 633 | * |
| 634 | * Called from kref_put. Back cast the kref into an event structure address. |
| 635 | * Free any events to get, delete associated nodes, free any events to see, |
| 636 | * free any data then free the event itself. |
| 637 | **/ |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 638 | static void |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 639 | lpfc_bsg_event_free(struct kref *kref) |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 640 | { |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 641 | struct lpfc_bsg_event *evt = container_of(kref, struct lpfc_bsg_event, |
| 642 | kref); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 643 | struct event_data *ed; |
| 644 | |
| 645 | list_del(&evt->node); |
| 646 | |
| 647 | while (!list_empty(&evt->events_to_get)) { |
| 648 | ed = list_entry(evt->events_to_get.next, typeof(*ed), node); |
| 649 | list_del(&ed->node); |
| 650 | kfree(ed->data); |
| 651 | kfree(ed); |
| 652 | } |
| 653 | |
| 654 | while (!list_empty(&evt->events_to_see)) { |
| 655 | ed = list_entry(evt->events_to_see.next, typeof(*ed), node); |
| 656 | list_del(&ed->node); |
| 657 | kfree(ed->data); |
| 658 | kfree(ed); |
| 659 | } |
| 660 | |
| 661 | kfree(evt); |
| 662 | } |
| 663 | |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 664 | /** |
| 665 | * lpfc_bsg_event_ref - increments the kref for an event |
| 666 | * @evt: Pointer to an event structure. |
| 667 | **/ |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 668 | static inline void |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 669 | lpfc_bsg_event_ref(struct lpfc_bsg_event *evt) |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 670 | { |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 671 | kref_get(&evt->kref); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 672 | } |
| 673 | |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 674 | /** |
| 675 | * lpfc_bsg_event_unref - Uses kref_put to free an event structure |
| 676 | * @evt: Pointer to an event structure. |
| 677 | **/ |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 678 | static inline void |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 679 | lpfc_bsg_event_unref(struct lpfc_bsg_event *evt) |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 680 | { |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 681 | kref_put(&evt->kref, lpfc_bsg_event_free); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 682 | } |
| 683 | |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 684 | /** |
| 685 | * lpfc_bsg_event_new - allocate and initialize a event structure |
| 686 | * @ev_mask: Mask of events. |
| 687 | * @ev_reg_id: Event reg id. |
| 688 | * @ev_req_id: Event request id. |
| 689 | **/ |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 690 | static struct lpfc_bsg_event * |
| 691 | lpfc_bsg_event_new(uint32_t ev_mask, int ev_reg_id, uint32_t ev_req_id) |
| 692 | { |
| 693 | struct lpfc_bsg_event *evt = kzalloc(sizeof(*evt), GFP_KERNEL); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 694 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 695 | if (!evt) |
| 696 | return NULL; |
| 697 | |
| 698 | INIT_LIST_HEAD(&evt->events_to_get); |
| 699 | INIT_LIST_HEAD(&evt->events_to_see); |
| 700 | evt->type_mask = ev_mask; |
| 701 | evt->req_id = ev_req_id; |
| 702 | evt->reg_id = ev_reg_id; |
| 703 | evt->wait_time_stamp = jiffies; |
| 704 | init_waitqueue_head(&evt->wq); |
| 705 | kref_init(&evt->kref); |
| 706 | return evt; |
| 707 | } |
| 708 | |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 709 | /** |
| 710 | * diag_cmd_data_free - Frees an lpfc dma buffer extension |
| 711 | * @phba: Pointer to HBA context object. |
| 712 | * @mlist: Pointer to an lpfc dma buffer extension. |
| 713 | **/ |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 714 | static int |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 715 | diag_cmd_data_free(struct lpfc_hba *phba, struct lpfc_dmabufext *mlist) |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 716 | { |
| 717 | struct lpfc_dmabufext *mlast; |
| 718 | struct pci_dev *pcidev; |
| 719 | struct list_head head, *curr, *next; |
| 720 | |
| 721 | if ((!mlist) || (!lpfc_is_link_up(phba) && |
| 722 | (phba->link_flag & LS_LOOPBACK_MODE))) { |
| 723 | return 0; |
| 724 | } |
| 725 | |
| 726 | pcidev = phba->pcidev; |
| 727 | list_add_tail(&head, &mlist->dma.list); |
| 728 | |
| 729 | list_for_each_safe(curr, next, &head) { |
| 730 | mlast = list_entry(curr, struct lpfc_dmabufext , dma.list); |
| 731 | if (mlast->dma.virt) |
| 732 | dma_free_coherent(&pcidev->dev, |
| 733 | mlast->size, |
| 734 | mlast->dma.virt, |
| 735 | mlast->dma.phys); |
| 736 | kfree(mlast); |
| 737 | } |
| 738 | return 0; |
| 739 | } |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 740 | |
| 741 | /** |
| 742 | * lpfc_bsg_ct_unsol_event - process an unsolicited CT command |
| 743 | * @phba: |
| 744 | * @pring: |
| 745 | * @piocbq: |
| 746 | * |
| 747 | * This function is called when an unsolicited CT command is received. It |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 748 | * forwards the event to any processes registered to receive CT events. |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 749 | **/ |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 750 | int |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 751 | lpfc_bsg_ct_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, |
| 752 | struct lpfc_iocbq *piocbq) |
| 753 | { |
| 754 | uint32_t evt_req_id = 0; |
| 755 | uint32_t cmd; |
| 756 | uint32_t len; |
| 757 | struct lpfc_dmabuf *dmabuf = NULL; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 758 | struct lpfc_bsg_event *evt; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 759 | struct event_data *evt_dat = NULL; |
| 760 | struct lpfc_iocbq *iocbq; |
| 761 | size_t offset = 0; |
| 762 | struct list_head head; |
| 763 | struct ulp_bde64 *bde; |
| 764 | dma_addr_t dma_addr; |
| 765 | int i; |
| 766 | struct lpfc_dmabuf *bdeBuf1 = piocbq->context2; |
| 767 | struct lpfc_dmabuf *bdeBuf2 = piocbq->context3; |
| 768 | struct lpfc_hbq_entry *hbqe; |
| 769 | struct lpfc_sli_ct_request *ct_req; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 770 | struct fc_bsg_job *job = NULL; |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 771 | unsigned long flags; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 772 | int size = 0; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 773 | |
| 774 | INIT_LIST_HEAD(&head); |
| 775 | list_add_tail(&head, &piocbq->list); |
| 776 | |
| 777 | if (piocbq->iocb.ulpBdeCount == 0 || |
| 778 | piocbq->iocb.un.cont64[0].tus.f.bdeSize == 0) |
| 779 | goto error_ct_unsol_exit; |
| 780 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 781 | if (phba->link_state == LPFC_HBA_ERROR || |
| 782 | (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) |
| 783 | goto error_ct_unsol_exit; |
| 784 | |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 785 | if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) |
| 786 | dmabuf = bdeBuf1; |
| 787 | else { |
| 788 | dma_addr = getPaddr(piocbq->iocb.un.cont64[0].addrHigh, |
| 789 | piocbq->iocb.un.cont64[0].addrLow); |
| 790 | dmabuf = lpfc_sli_ringpostbuf_get(phba, pring, dma_addr); |
| 791 | } |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 792 | if (dmabuf == NULL) |
| 793 | goto error_ct_unsol_exit; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 794 | ct_req = (struct lpfc_sli_ct_request *)dmabuf->virt; |
| 795 | evt_req_id = ct_req->FsType; |
| 796 | cmd = ct_req->CommandResponse.bits.CmdRsp; |
| 797 | len = ct_req->CommandResponse.bits.Size; |
| 798 | if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) |
| 799 | lpfc_sli_ringpostbuf_put(phba, pring, dmabuf); |
| 800 | |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 801 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 802 | list_for_each_entry(evt, &phba->ct_ev_waiters, node) { |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 803 | if (!(evt->type_mask & FC_REG_CT_EVENT) || |
| 804 | evt->req_id != evt_req_id) |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 805 | continue; |
| 806 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 807 | lpfc_bsg_event_ref(evt); |
| 808 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 809 | evt_dat = kzalloc(sizeof(*evt_dat), GFP_KERNEL); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 810 | if (evt_dat == NULL) { |
| 811 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
| 812 | lpfc_bsg_event_unref(evt); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 813 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 814 | "2614 Memory allocation failed for " |
| 815 | "CT event\n"); |
| 816 | break; |
| 817 | } |
| 818 | |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 819 | if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { |
| 820 | /* take accumulated byte count from the last iocbq */ |
| 821 | iocbq = list_entry(head.prev, typeof(*iocbq), list); |
| 822 | evt_dat->len = iocbq->iocb.unsli3.rcvsli3.acc_len; |
| 823 | } else { |
| 824 | list_for_each_entry(iocbq, &head, list) { |
| 825 | for (i = 0; i < iocbq->iocb.ulpBdeCount; i++) |
| 826 | evt_dat->len += |
| 827 | iocbq->iocb.un.cont64[i].tus.f.bdeSize; |
| 828 | } |
| 829 | } |
| 830 | |
| 831 | evt_dat->data = kzalloc(evt_dat->len, GFP_KERNEL); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 832 | if (evt_dat->data == NULL) { |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 833 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 834 | "2615 Memory allocation failed for " |
| 835 | "CT event data, size %d\n", |
| 836 | evt_dat->len); |
| 837 | kfree(evt_dat); |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 838 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 839 | lpfc_bsg_event_unref(evt); |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 840 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 841 | goto error_ct_unsol_exit; |
| 842 | } |
| 843 | |
| 844 | list_for_each_entry(iocbq, &head, list) { |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 845 | size = 0; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 846 | if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { |
| 847 | bdeBuf1 = iocbq->context2; |
| 848 | bdeBuf2 = iocbq->context3; |
| 849 | } |
| 850 | for (i = 0; i < iocbq->iocb.ulpBdeCount; i++) { |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 851 | if (phba->sli3_options & |
| 852 | LPFC_SLI3_HBQ_ENABLED) { |
| 853 | if (i == 0) { |
| 854 | hbqe = (struct lpfc_hbq_entry *) |
| 855 | &iocbq->iocb.un.ulpWord[0]; |
| 856 | size = hbqe->bde.tus.f.bdeSize; |
| 857 | dmabuf = bdeBuf1; |
| 858 | } else if (i == 1) { |
| 859 | hbqe = (struct lpfc_hbq_entry *) |
| 860 | &iocbq->iocb.unsli3. |
| 861 | sli3Words[4]; |
| 862 | size = hbqe->bde.tus.f.bdeSize; |
| 863 | dmabuf = bdeBuf2; |
| 864 | } |
| 865 | if ((offset + size) > evt_dat->len) |
| 866 | size = evt_dat->len - offset; |
| 867 | } else { |
| 868 | size = iocbq->iocb.un.cont64[i]. |
| 869 | tus.f.bdeSize; |
| 870 | bde = &iocbq->iocb.un.cont64[i]; |
| 871 | dma_addr = getPaddr(bde->addrHigh, |
| 872 | bde->addrLow); |
| 873 | dmabuf = lpfc_sli_ringpostbuf_get(phba, |
| 874 | pring, dma_addr); |
| 875 | } |
| 876 | if (!dmabuf) { |
| 877 | lpfc_printf_log(phba, KERN_ERR, |
| 878 | LOG_LIBDFC, "2616 No dmabuf " |
| 879 | "found for iocbq 0x%p\n", |
| 880 | iocbq); |
| 881 | kfree(evt_dat->data); |
| 882 | kfree(evt_dat); |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 883 | spin_lock_irqsave(&phba->ct_ev_lock, |
| 884 | flags); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 885 | lpfc_bsg_event_unref(evt); |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 886 | spin_unlock_irqrestore( |
| 887 | &phba->ct_ev_lock, flags); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 888 | goto error_ct_unsol_exit; |
| 889 | } |
| 890 | memcpy((char *)(evt_dat->data) + offset, |
| 891 | dmabuf->virt, size); |
| 892 | offset += size; |
| 893 | if (evt_req_id != SLI_CT_ELX_LOOPBACK && |
| 894 | !(phba->sli3_options & |
| 895 | LPFC_SLI3_HBQ_ENABLED)) { |
| 896 | lpfc_sli_ringpostbuf_put(phba, pring, |
| 897 | dmabuf); |
| 898 | } else { |
| 899 | switch (cmd) { |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 900 | case ELX_LOOPBACK_DATA: |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 901 | diag_cmd_data_free(phba, |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 902 | (struct lpfc_dmabufext *) |
| 903 | dmabuf); |
| 904 | break; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 905 | case ELX_LOOPBACK_XRI_SETUP: |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 906 | if ((phba->sli_rev == |
| 907 | LPFC_SLI_REV2) || |
| 908 | (phba->sli3_options & |
| 909 | LPFC_SLI3_HBQ_ENABLED |
| 910 | )) { |
| 911 | lpfc_in_buf_free(phba, |
| 912 | dmabuf); |
| 913 | } else { |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 914 | lpfc_post_buffer(phba, |
| 915 | pring, |
| 916 | 1); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 917 | } |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 918 | break; |
| 919 | default: |
| 920 | if (!(phba->sli3_options & |
| 921 | LPFC_SLI3_HBQ_ENABLED)) |
| 922 | lpfc_post_buffer(phba, |
| 923 | pring, |
| 924 | 1); |
| 925 | break; |
| 926 | } |
| 927 | } |
| 928 | } |
| 929 | } |
| 930 | |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 931 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 932 | if (phba->sli_rev == LPFC_SLI_REV4) { |
| 933 | evt_dat->immed_dat = phba->ctx_idx; |
| 934 | phba->ctx_idx = (phba->ctx_idx + 1) % 64; |
| 935 | phba->ct_ctx[evt_dat->immed_dat].oxid = |
| 936 | piocbq->iocb.ulpContext; |
| 937 | phba->ct_ctx[evt_dat->immed_dat].SID = |
| 938 | piocbq->iocb.un.rcvels.remoteID; |
| 939 | } else |
| 940 | evt_dat->immed_dat = piocbq->iocb.ulpContext; |
| 941 | |
| 942 | evt_dat->type = FC_REG_CT_EVENT; |
| 943 | list_add(&evt_dat->node, &evt->events_to_see); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 944 | if (evt_req_id == SLI_CT_ELX_LOOPBACK) { |
| 945 | wake_up_interruptible(&evt->wq); |
| 946 | lpfc_bsg_event_unref(evt); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 947 | break; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 948 | } |
| 949 | |
| 950 | list_move(evt->events_to_see.prev, &evt->events_to_get); |
| 951 | lpfc_bsg_event_unref(evt); |
| 952 | |
| 953 | job = evt->set_job; |
| 954 | evt->set_job = NULL; |
| 955 | if (job) { |
| 956 | job->reply->reply_payload_rcv_len = size; |
| 957 | /* make error code available to userspace */ |
| 958 | job->reply->result = 0; |
| 959 | job->dd_data = NULL; |
| 960 | /* complete the job back to userspace */ |
| 961 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 962 | job->job_done(job); |
| 963 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
| 964 | } |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 965 | } |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 966 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 967 | |
| 968 | error_ct_unsol_exit: |
| 969 | if (!list_empty(&head)) |
| 970 | list_del(&head); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 971 | if (evt_req_id == SLI_CT_ELX_LOOPBACK) |
| 972 | return 0; |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 973 | return 1; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 974 | } |
| 975 | |
| 976 | /** |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 977 | * lpfc_bsg_hba_set_event - process a SET_EVENT bsg vendor command |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 978 | * @job: SET_EVENT fc_bsg_job |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 979 | **/ |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 980 | static int |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 981 | lpfc_bsg_hba_set_event(struct fc_bsg_job *job) |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 982 | { |
| 983 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
| 984 | struct lpfc_hba *phba = vport->phba; |
| 985 | struct set_ct_event *event_req; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 986 | struct lpfc_bsg_event *evt; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 987 | int rc = 0; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 988 | struct bsg_job_data *dd_data = NULL; |
| 989 | uint32_t ev_mask; |
| 990 | unsigned long flags; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 991 | |
| 992 | if (job->request_len < |
| 993 | sizeof(struct fc_bsg_request) + sizeof(struct set_ct_event)) { |
| 994 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 995 | "2612 Received SET_CT_EVENT below minimum " |
| 996 | "size\n"); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 997 | rc = -EINVAL; |
| 998 | goto job_error; |
| 999 | } |
| 1000 | |
| 1001 | dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); |
| 1002 | if (dd_data == NULL) { |
| 1003 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 1004 | "2734 Failed allocation of dd_data\n"); |
| 1005 | rc = -ENOMEM; |
| 1006 | goto job_error; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1007 | } |
| 1008 | |
| 1009 | event_req = (struct set_ct_event *) |
| 1010 | job->request->rqst_data.h_vendor.vendor_cmd; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1011 | ev_mask = ((uint32_t)(unsigned long)event_req->type_mask & |
| 1012 | FC_REG_EVENT_MASK); |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 1013 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1014 | list_for_each_entry(evt, &phba->ct_ev_waiters, node) { |
| 1015 | if (evt->reg_id == event_req->ev_reg_id) { |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1016 | lpfc_bsg_event_ref(evt); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1017 | evt->wait_time_stamp = jiffies; |
| 1018 | break; |
| 1019 | } |
| 1020 | } |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 1021 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1022 | |
| 1023 | if (&evt->node == &phba->ct_ev_waiters) { |
| 1024 | /* no event waiting struct yet - first call */ |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1025 | evt = lpfc_bsg_event_new(ev_mask, event_req->ev_reg_id, |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1026 | event_req->ev_req_id); |
| 1027 | if (!evt) { |
| 1028 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 1029 | "2617 Failed allocation of event " |
| 1030 | "waiter\n"); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1031 | rc = -ENOMEM; |
| 1032 | goto job_error; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1033 | } |
| 1034 | |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 1035 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1036 | list_add(&evt->node, &phba->ct_ev_waiters); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1037 | lpfc_bsg_event_ref(evt); |
| 1038 | evt->wait_time_stamp = jiffies; |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 1039 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1040 | } |
| 1041 | |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 1042 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1043 | evt->waiting = 1; |
| 1044 | dd_data->type = TYPE_EVT; |
| 1045 | dd_data->context_un.evt = evt; |
| 1046 | evt->set_job = job; /* for unsolicited command */ |
| 1047 | job->dd_data = dd_data; /* for fc transport timeout callback*/ |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 1048 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1049 | return 0; /* call job done later */ |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1050 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1051 | job_error: |
| 1052 | if (dd_data != NULL) |
| 1053 | kfree(dd_data); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1054 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1055 | job->dd_data = NULL; |
| 1056 | return rc; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1057 | } |
| 1058 | |
| 1059 | /** |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1060 | * lpfc_bsg_hba_get_event - process a GET_EVENT bsg vendor command |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1061 | * @job: GET_EVENT fc_bsg_job |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 1062 | **/ |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1063 | static int |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1064 | lpfc_bsg_hba_get_event(struct fc_bsg_job *job) |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1065 | { |
| 1066 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
| 1067 | struct lpfc_hba *phba = vport->phba; |
| 1068 | struct get_ct_event *event_req; |
| 1069 | struct get_ct_event_reply *event_reply; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1070 | struct lpfc_bsg_event *evt; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1071 | struct event_data *evt_dat = NULL; |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 1072 | unsigned long flags; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1073 | uint32_t rc = 0; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1074 | |
| 1075 | if (job->request_len < |
| 1076 | sizeof(struct fc_bsg_request) + sizeof(struct get_ct_event)) { |
| 1077 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 1078 | "2613 Received GET_CT_EVENT request below " |
| 1079 | "minimum size\n"); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1080 | rc = -EINVAL; |
| 1081 | goto job_error; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1082 | } |
| 1083 | |
| 1084 | event_req = (struct get_ct_event *) |
| 1085 | job->request->rqst_data.h_vendor.vendor_cmd; |
| 1086 | |
| 1087 | event_reply = (struct get_ct_event_reply *) |
| 1088 | job->reply->reply_data.vendor_reply.vendor_rsp; |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 1089 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1090 | list_for_each_entry(evt, &phba->ct_ev_waiters, node) { |
| 1091 | if (evt->reg_id == event_req->ev_reg_id) { |
| 1092 | if (list_empty(&evt->events_to_get)) |
| 1093 | break; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1094 | lpfc_bsg_event_ref(evt); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1095 | evt->wait_time_stamp = jiffies; |
| 1096 | evt_dat = list_entry(evt->events_to_get.prev, |
| 1097 | struct event_data, node); |
| 1098 | list_del(&evt_dat->node); |
| 1099 | break; |
| 1100 | } |
| 1101 | } |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 1102 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1103 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1104 | /* The app may continue to ask for event data until it gets |
| 1105 | * an error indicating that there isn't anymore |
| 1106 | */ |
| 1107 | if (evt_dat == NULL) { |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1108 | job->reply->reply_payload_rcv_len = 0; |
| 1109 | rc = -ENOENT; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1110 | goto job_error; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1111 | } |
| 1112 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1113 | if (evt_dat->len > job->request_payload.payload_len) { |
| 1114 | evt_dat->len = job->request_payload.payload_len; |
| 1115 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 1116 | "2618 Truncated event data at %d " |
| 1117 | "bytes\n", |
| 1118 | job->request_payload.payload_len); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1119 | } |
| 1120 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1121 | event_reply->type = evt_dat->type; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1122 | event_reply->immed_data = evt_dat->immed_dat; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1123 | if (evt_dat->len > 0) |
| 1124 | job->reply->reply_payload_rcv_len = |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1125 | sg_copy_from_buffer(job->request_payload.sg_list, |
| 1126 | job->request_payload.sg_cnt, |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1127 | evt_dat->data, evt_dat->len); |
| 1128 | else |
| 1129 | job->reply->reply_payload_rcv_len = 0; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1130 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1131 | if (evt_dat) { |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1132 | kfree(evt_dat->data); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1133 | kfree(evt_dat); |
| 1134 | } |
| 1135 | |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 1136 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1137 | lpfc_bsg_event_unref(evt); |
James Smart | 4fede78 | 2010-01-26 23:08:55 -0500 | [diff] [blame] | 1138 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1139 | job->dd_data = NULL; |
| 1140 | job->reply->result = 0; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1141 | job->job_done(job); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1142 | return 0; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1143 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 1144 | job_error: |
| 1145 | job->dd_data = NULL; |
| 1146 | job->reply->result = rc; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 1147 | return rc; |
| 1148 | } |
| 1149 | |
| 1150 | /** |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 1151 | * lpfc_issue_ct_rsp_cmp - lpfc_issue_ct_rsp's completion handler |
| 1152 | * @phba: Pointer to HBA context object. |
| 1153 | * @cmdiocbq: Pointer to command iocb. |
| 1154 | * @rspiocbq: Pointer to response iocb. |
| 1155 | * |
| 1156 | * This function is the completion handler for iocbs issued using |
| 1157 | * lpfc_issue_ct_rsp_cmp function. This function is called by the |
| 1158 | * ring event handler function without any lock held. This function |
| 1159 | * can be called from both worker thread context and interrupt |
| 1160 | * context. This function also can be called from other thread which |
| 1161 | * cleans up the SLI layer objects. |
| 1162 | * This function copy the contents of the response iocb to the |
| 1163 | * response iocb memory object provided by the caller of |
| 1164 | * lpfc_sli_issue_iocb_wait and then wakes up the thread which |
| 1165 | * sleeps for the iocb completion. |
| 1166 | **/ |
| 1167 | static void |
| 1168 | lpfc_issue_ct_rsp_cmp(struct lpfc_hba *phba, |
| 1169 | struct lpfc_iocbq *cmdiocbq, |
| 1170 | struct lpfc_iocbq *rspiocbq) |
| 1171 | { |
| 1172 | struct bsg_job_data *dd_data; |
| 1173 | struct fc_bsg_job *job; |
| 1174 | IOCB_t *rsp; |
| 1175 | struct lpfc_dmabuf *bmp; |
| 1176 | struct lpfc_nodelist *ndlp; |
| 1177 | unsigned long flags; |
| 1178 | int rc = 0; |
| 1179 | |
| 1180 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
| 1181 | dd_data = cmdiocbq->context1; |
| 1182 | /* normal completion and timeout crossed paths, already done */ |
| 1183 | if (!dd_data) { |
| 1184 | spin_unlock_irqrestore(&phba->hbalock, flags); |
| 1185 | return; |
| 1186 | } |
| 1187 | |
| 1188 | job = dd_data->context_un.iocb.set_job; |
| 1189 | bmp = dd_data->context_un.iocb.bmp; |
| 1190 | rsp = &rspiocbq->iocb; |
| 1191 | ndlp = dd_data->context_un.iocb.ndlp; |
| 1192 | |
| 1193 | pci_unmap_sg(phba->pcidev, job->request_payload.sg_list, |
| 1194 | job->request_payload.sg_cnt, DMA_TO_DEVICE); |
| 1195 | |
| 1196 | if (rsp->ulpStatus) { |
| 1197 | if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) { |
| 1198 | switch (rsp->un.ulpWord[4] & 0xff) { |
| 1199 | case IOERR_SEQUENCE_TIMEOUT: |
| 1200 | rc = -ETIMEDOUT; |
| 1201 | break; |
| 1202 | case IOERR_INVALID_RPI: |
| 1203 | rc = -EFAULT; |
| 1204 | break; |
| 1205 | default: |
| 1206 | rc = -EACCES; |
| 1207 | break; |
| 1208 | } |
| 1209 | } else |
| 1210 | rc = -EACCES; |
| 1211 | } else |
| 1212 | job->reply->reply_payload_rcv_len = |
| 1213 | rsp->un.genreq64.bdl.bdeSize; |
| 1214 | |
| 1215 | lpfc_mbuf_free(phba, bmp->virt, bmp->phys); |
| 1216 | lpfc_sli_release_iocbq(phba, cmdiocbq); |
| 1217 | lpfc_nlp_put(ndlp); |
| 1218 | kfree(bmp); |
| 1219 | kfree(dd_data); |
| 1220 | /* make error code available to userspace */ |
| 1221 | job->reply->result = rc; |
| 1222 | job->dd_data = NULL; |
| 1223 | /* complete the job back to userspace */ |
| 1224 | job->job_done(job); |
| 1225 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 1226 | return; |
| 1227 | } |
| 1228 | |
| 1229 | /** |
| 1230 | * lpfc_issue_ct_rsp - issue a ct response |
| 1231 | * @phba: Pointer to HBA context object. |
| 1232 | * @job: Pointer to the job object. |
| 1233 | * @tag: tag index value into the ports context exchange array. |
| 1234 | * @bmp: Pointer to a dma buffer descriptor. |
| 1235 | * @num_entry: Number of enties in the bde. |
| 1236 | **/ |
| 1237 | static int |
| 1238 | lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct fc_bsg_job *job, uint32_t tag, |
| 1239 | struct lpfc_dmabuf *bmp, int num_entry) |
| 1240 | { |
| 1241 | IOCB_t *icmd; |
| 1242 | struct lpfc_iocbq *ctiocb = NULL; |
| 1243 | int rc = 0; |
| 1244 | struct lpfc_nodelist *ndlp = NULL; |
| 1245 | struct bsg_job_data *dd_data; |
| 1246 | uint32_t creg_val; |
| 1247 | |
| 1248 | /* allocate our bsg tracking structure */ |
| 1249 | dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); |
| 1250 | if (!dd_data) { |
| 1251 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 1252 | "2736 Failed allocation of dd_data\n"); |
| 1253 | rc = -ENOMEM; |
| 1254 | goto no_dd_data; |
| 1255 | } |
| 1256 | |
| 1257 | /* Allocate buffer for command iocb */ |
| 1258 | ctiocb = lpfc_sli_get_iocbq(phba); |
| 1259 | if (!ctiocb) { |
| 1260 | rc = ENOMEM; |
| 1261 | goto no_ctiocb; |
| 1262 | } |
| 1263 | |
| 1264 | icmd = &ctiocb->iocb; |
| 1265 | icmd->un.xseq64.bdl.ulpIoTag32 = 0; |
| 1266 | icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(bmp->phys); |
| 1267 | icmd->un.xseq64.bdl.addrLow = putPaddrLow(bmp->phys); |
| 1268 | icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64; |
| 1269 | icmd->un.xseq64.bdl.bdeSize = (num_entry * sizeof(struct ulp_bde64)); |
| 1270 | icmd->un.xseq64.w5.hcsw.Fctl = (LS | LA); |
| 1271 | icmd->un.xseq64.w5.hcsw.Dfctl = 0; |
| 1272 | icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_SOL_CTL; |
| 1273 | icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT; |
| 1274 | |
| 1275 | /* Fill in rest of iocb */ |
| 1276 | icmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX; |
| 1277 | icmd->ulpBdeCount = 1; |
| 1278 | icmd->ulpLe = 1; |
| 1279 | icmd->ulpClass = CLASS3; |
| 1280 | if (phba->sli_rev == LPFC_SLI_REV4) { |
| 1281 | /* Do not issue unsol response if oxid not marked as valid */ |
| 1282 | if (!(phba->ct_ctx[tag].flags & UNSOL_VALID)) { |
| 1283 | rc = IOCB_ERROR; |
| 1284 | goto issue_ct_rsp_exit; |
| 1285 | } |
| 1286 | icmd->ulpContext = phba->ct_ctx[tag].oxid; |
| 1287 | ndlp = lpfc_findnode_did(phba->pport, phba->ct_ctx[tag].SID); |
| 1288 | if (!ndlp) { |
| 1289 | lpfc_printf_log(phba, KERN_WARNING, LOG_ELS, |
| 1290 | "2721 ndlp null for oxid %x SID %x\n", |
| 1291 | icmd->ulpContext, |
| 1292 | phba->ct_ctx[tag].SID); |
| 1293 | rc = IOCB_ERROR; |
| 1294 | goto issue_ct_rsp_exit; |
| 1295 | } |
| 1296 | icmd->un.ulpWord[3] = ndlp->nlp_rpi; |
| 1297 | /* The exchange is done, mark the entry as invalid */ |
| 1298 | phba->ct_ctx[tag].flags &= ~UNSOL_VALID; |
| 1299 | } else |
| 1300 | icmd->ulpContext = (ushort) tag; |
| 1301 | |
| 1302 | icmd->ulpTimeout = phba->fc_ratov * 2; |
| 1303 | |
| 1304 | /* Xmit CT response on exchange <xid> */ |
| 1305 | lpfc_printf_log(phba, KERN_INFO, LOG_ELS, |
| 1306 | "2722 Xmit CT response on exchange x%x Data: x%x x%x\n", |
| 1307 | icmd->ulpContext, icmd->ulpIoTag, phba->link_state); |
| 1308 | |
| 1309 | ctiocb->iocb_cmpl = NULL; |
| 1310 | ctiocb->iocb_flag |= LPFC_IO_LIBDFC; |
| 1311 | ctiocb->vport = phba->pport; |
| 1312 | ctiocb->context3 = bmp; |
| 1313 | |
| 1314 | ctiocb->iocb_cmpl = lpfc_issue_ct_rsp_cmp; |
| 1315 | ctiocb->context1 = dd_data; |
| 1316 | ctiocb->context2 = NULL; |
| 1317 | dd_data->type = TYPE_IOCB; |
| 1318 | dd_data->context_un.iocb.cmdiocbq = ctiocb; |
| 1319 | dd_data->context_un.iocb.rspiocbq = NULL; |
| 1320 | dd_data->context_un.iocb.set_job = job; |
| 1321 | dd_data->context_un.iocb.bmp = bmp; |
| 1322 | dd_data->context_un.iocb.ndlp = ndlp; |
| 1323 | |
| 1324 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) { |
| 1325 | creg_val = readl(phba->HCregaddr); |
| 1326 | creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING); |
| 1327 | writel(creg_val, phba->HCregaddr); |
| 1328 | readl(phba->HCregaddr); /* flush */ |
| 1329 | } |
| 1330 | |
| 1331 | rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0); |
| 1332 | |
| 1333 | if (rc == IOCB_SUCCESS) |
| 1334 | return 0; /* done for now */ |
| 1335 | |
| 1336 | issue_ct_rsp_exit: |
| 1337 | lpfc_sli_release_iocbq(phba, ctiocb); |
| 1338 | no_ctiocb: |
| 1339 | kfree(dd_data); |
| 1340 | no_dd_data: |
| 1341 | return rc; |
| 1342 | } |
| 1343 | |
| 1344 | /** |
| 1345 | * lpfc_bsg_send_mgmt_rsp - process a SEND_MGMT_RESP bsg vendor command |
| 1346 | * @job: SEND_MGMT_RESP fc_bsg_job |
| 1347 | **/ |
| 1348 | static int |
| 1349 | lpfc_bsg_send_mgmt_rsp(struct fc_bsg_job *job) |
| 1350 | { |
| 1351 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
| 1352 | struct lpfc_hba *phba = vport->phba; |
| 1353 | struct send_mgmt_resp *mgmt_resp = (struct send_mgmt_resp *) |
| 1354 | job->request->rqst_data.h_vendor.vendor_cmd; |
| 1355 | struct ulp_bde64 *bpl; |
| 1356 | struct lpfc_dmabuf *bmp = NULL; |
| 1357 | struct scatterlist *sgel = NULL; |
| 1358 | int request_nseg; |
| 1359 | int numbde; |
| 1360 | dma_addr_t busaddr; |
| 1361 | uint32_t tag = mgmt_resp->tag; |
| 1362 | unsigned long reqbfrcnt = |
| 1363 | (unsigned long)job->request_payload.payload_len; |
| 1364 | int rc = 0; |
| 1365 | |
| 1366 | /* in case no data is transferred */ |
| 1367 | job->reply->reply_payload_rcv_len = 0; |
| 1368 | |
| 1369 | if (!reqbfrcnt || (reqbfrcnt > (80 * BUF_SZ_4K))) { |
| 1370 | rc = -ERANGE; |
| 1371 | goto send_mgmt_rsp_exit; |
| 1372 | } |
| 1373 | |
| 1374 | bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); |
| 1375 | if (!bmp) { |
| 1376 | rc = -ENOMEM; |
| 1377 | goto send_mgmt_rsp_exit; |
| 1378 | } |
| 1379 | |
| 1380 | bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys); |
| 1381 | if (!bmp->virt) { |
| 1382 | rc = -ENOMEM; |
| 1383 | goto send_mgmt_rsp_free_bmp; |
| 1384 | } |
| 1385 | |
| 1386 | INIT_LIST_HEAD(&bmp->list); |
| 1387 | bpl = (struct ulp_bde64 *) bmp->virt; |
| 1388 | request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list, |
| 1389 | job->request_payload.sg_cnt, DMA_TO_DEVICE); |
| 1390 | for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) { |
| 1391 | busaddr = sg_dma_address(sgel); |
| 1392 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; |
| 1393 | bpl->tus.f.bdeSize = sg_dma_len(sgel); |
| 1394 | bpl->tus.w = cpu_to_le32(bpl->tus.w); |
| 1395 | bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); |
| 1396 | bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); |
| 1397 | bpl++; |
| 1398 | } |
| 1399 | |
| 1400 | rc = lpfc_issue_ct_rsp(phba, job, tag, bmp, request_nseg); |
| 1401 | |
| 1402 | if (rc == IOCB_SUCCESS) |
| 1403 | return 0; /* done for now */ |
| 1404 | |
| 1405 | /* TBD need to handle a timeout */ |
| 1406 | pci_unmap_sg(phba->pcidev, job->request_payload.sg_list, |
| 1407 | job->request_payload.sg_cnt, DMA_TO_DEVICE); |
| 1408 | rc = -EACCES; |
| 1409 | lpfc_mbuf_free(phba, bmp->virt, bmp->phys); |
| 1410 | |
| 1411 | send_mgmt_rsp_free_bmp: |
| 1412 | kfree(bmp); |
| 1413 | send_mgmt_rsp_exit: |
| 1414 | /* make error code available to userspace */ |
| 1415 | job->reply->result = rc; |
| 1416 | job->dd_data = NULL; |
| 1417 | return rc; |
| 1418 | } |
| 1419 | |
| 1420 | /** |
| 1421 | * lpfc_bsg_diag_mode - process a LPFC_BSG_VENDOR_DIAG_MODE bsg vendor command |
| 1422 | * @job: LPFC_BSG_VENDOR_DIAG_MODE |
| 1423 | * |
| 1424 | * This function is responsible for placing a port into diagnostic loopback |
| 1425 | * mode in order to perform a diagnostic loopback test. |
| 1426 | * All new scsi requests are blocked, a small delay is used to allow the |
| 1427 | * scsi requests to complete then the link is brought down. If the link is |
| 1428 | * is placed in loopback mode then scsi requests are again allowed |
| 1429 | * so the scsi mid-layer doesn't give up on the port. |
| 1430 | * All of this is done in-line. |
| 1431 | */ |
| 1432 | static int |
| 1433 | lpfc_bsg_diag_mode(struct fc_bsg_job *job) |
| 1434 | { |
| 1435 | struct Scsi_Host *shost = job->shost; |
| 1436 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
| 1437 | struct lpfc_hba *phba = vport->phba; |
| 1438 | struct diag_mode_set *loopback_mode; |
| 1439 | struct lpfc_sli *psli = &phba->sli; |
| 1440 | struct lpfc_sli_ring *pring = &psli->ring[LPFC_FCP_RING]; |
| 1441 | uint32_t link_flags; |
| 1442 | uint32_t timeout; |
| 1443 | struct lpfc_vport **vports; |
| 1444 | LPFC_MBOXQ_t *pmboxq; |
| 1445 | int mbxstatus; |
| 1446 | int i = 0; |
| 1447 | int rc = 0; |
| 1448 | |
| 1449 | /* no data to return just the return code */ |
| 1450 | job->reply->reply_payload_rcv_len = 0; |
| 1451 | |
| 1452 | if (job->request_len < |
| 1453 | sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_set)) { |
| 1454 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 1455 | "2738 Received DIAG MODE request below minimum " |
| 1456 | "size\n"); |
| 1457 | rc = -EINVAL; |
| 1458 | goto job_error; |
| 1459 | } |
| 1460 | |
| 1461 | loopback_mode = (struct diag_mode_set *) |
| 1462 | job->request->rqst_data.h_vendor.vendor_cmd; |
| 1463 | link_flags = loopback_mode->type; |
| 1464 | timeout = loopback_mode->timeout; |
| 1465 | |
| 1466 | if ((phba->link_state == LPFC_HBA_ERROR) || |
| 1467 | (psli->sli_flag & LPFC_BLOCK_MGMT_IO) || |
| 1468 | (!(psli->sli_flag & LPFC_SLI_ACTIVE))) { |
| 1469 | rc = -EACCES; |
| 1470 | goto job_error; |
| 1471 | } |
| 1472 | |
| 1473 | pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| 1474 | if (!pmboxq) { |
| 1475 | rc = -ENOMEM; |
| 1476 | goto job_error; |
| 1477 | } |
| 1478 | |
| 1479 | vports = lpfc_create_vport_work_array(phba); |
| 1480 | if (vports) { |
| 1481 | for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { |
| 1482 | shost = lpfc_shost_from_vport(vports[i]); |
| 1483 | scsi_block_requests(shost); |
| 1484 | } |
| 1485 | |
| 1486 | lpfc_destroy_vport_work_array(phba, vports); |
| 1487 | } else { |
| 1488 | shost = lpfc_shost_from_vport(phba->pport); |
| 1489 | scsi_block_requests(shost); |
| 1490 | } |
| 1491 | |
| 1492 | while (pring->txcmplq_cnt) { |
| 1493 | if (i++ > 500) /* wait up to 5 seconds */ |
| 1494 | break; |
| 1495 | |
| 1496 | msleep(10); |
| 1497 | } |
| 1498 | |
| 1499 | memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t)); |
| 1500 | pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK; |
| 1501 | pmboxq->u.mb.mbxOwner = OWN_HOST; |
| 1502 | |
| 1503 | mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO); |
| 1504 | |
| 1505 | if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0)) { |
| 1506 | /* wait for link down before proceeding */ |
| 1507 | i = 0; |
| 1508 | while (phba->link_state != LPFC_LINK_DOWN) { |
| 1509 | if (i++ > timeout) { |
| 1510 | rc = -ETIMEDOUT; |
| 1511 | goto loopback_mode_exit; |
| 1512 | } |
| 1513 | |
| 1514 | msleep(10); |
| 1515 | } |
| 1516 | |
| 1517 | memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t)); |
| 1518 | if (link_flags == INTERNAL_LOOP_BACK) |
| 1519 | pmboxq->u.mb.un.varInitLnk.link_flags = FLAGS_LOCAL_LB; |
| 1520 | else |
| 1521 | pmboxq->u.mb.un.varInitLnk.link_flags = |
| 1522 | FLAGS_TOPOLOGY_MODE_LOOP; |
| 1523 | |
| 1524 | pmboxq->u.mb.mbxCommand = MBX_INIT_LINK; |
| 1525 | pmboxq->u.mb.mbxOwner = OWN_HOST; |
| 1526 | |
| 1527 | mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, |
| 1528 | LPFC_MBOX_TMO); |
| 1529 | |
| 1530 | if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus)) |
| 1531 | rc = -ENODEV; |
| 1532 | else { |
| 1533 | phba->link_flag |= LS_LOOPBACK_MODE; |
| 1534 | /* wait for the link attention interrupt */ |
| 1535 | msleep(100); |
| 1536 | |
| 1537 | i = 0; |
| 1538 | while (phba->link_state != LPFC_HBA_READY) { |
| 1539 | if (i++ > timeout) { |
| 1540 | rc = -ETIMEDOUT; |
| 1541 | break; |
| 1542 | } |
| 1543 | |
| 1544 | msleep(10); |
| 1545 | } |
| 1546 | } |
| 1547 | |
| 1548 | } else |
| 1549 | rc = -ENODEV; |
| 1550 | |
| 1551 | loopback_mode_exit: |
| 1552 | vports = lpfc_create_vport_work_array(phba); |
| 1553 | if (vports) { |
| 1554 | for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { |
| 1555 | shost = lpfc_shost_from_vport(vports[i]); |
| 1556 | scsi_unblock_requests(shost); |
| 1557 | } |
| 1558 | lpfc_destroy_vport_work_array(phba, vports); |
| 1559 | } else { |
| 1560 | shost = lpfc_shost_from_vport(phba->pport); |
| 1561 | scsi_unblock_requests(shost); |
| 1562 | } |
| 1563 | |
| 1564 | /* |
| 1565 | * Let SLI layer release mboxq if mbox command completed after timeout. |
| 1566 | */ |
| 1567 | if (mbxstatus != MBX_TIMEOUT) |
| 1568 | mempool_free(pmboxq, phba->mbox_mem_pool); |
| 1569 | |
| 1570 | job_error: |
| 1571 | /* make error code available to userspace */ |
| 1572 | job->reply->result = rc; |
| 1573 | /* complete the job back to userspace if no error */ |
| 1574 | if (rc == 0) |
| 1575 | job->job_done(job); |
| 1576 | return rc; |
| 1577 | } |
| 1578 | |
| 1579 | /** |
| 1580 | * lpfcdiag_loop_self_reg - obtains a remote port login id |
| 1581 | * @phba: Pointer to HBA context object |
| 1582 | * @rpi: Pointer to a remote port login id |
| 1583 | * |
| 1584 | * This function obtains a remote port login id so the diag loopback test |
| 1585 | * can send and receive its own unsolicited CT command. |
| 1586 | **/ |
| 1587 | static int lpfcdiag_loop_self_reg(struct lpfc_hba *phba, uint16_t * rpi) |
| 1588 | { |
| 1589 | LPFC_MBOXQ_t *mbox; |
| 1590 | struct lpfc_dmabuf *dmabuff; |
| 1591 | int status; |
| 1592 | |
| 1593 | mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| 1594 | if (!mbox) |
| 1595 | return ENOMEM; |
| 1596 | |
| 1597 | status = lpfc_reg_rpi(phba, 0, phba->pport->fc_myDID, |
| 1598 | (uint8_t *)&phba->pport->fc_sparam, mbox, 0); |
| 1599 | if (status) { |
| 1600 | mempool_free(mbox, phba->mbox_mem_pool); |
| 1601 | return ENOMEM; |
| 1602 | } |
| 1603 | |
| 1604 | dmabuff = (struct lpfc_dmabuf *) mbox->context1; |
| 1605 | mbox->context1 = NULL; |
| 1606 | status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); |
| 1607 | |
| 1608 | if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) { |
| 1609 | lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys); |
| 1610 | kfree(dmabuff); |
| 1611 | if (status != MBX_TIMEOUT) |
| 1612 | mempool_free(mbox, phba->mbox_mem_pool); |
| 1613 | return ENODEV; |
| 1614 | } |
| 1615 | |
| 1616 | *rpi = mbox->u.mb.un.varWords[0]; |
| 1617 | |
| 1618 | lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys); |
| 1619 | kfree(dmabuff); |
| 1620 | mempool_free(mbox, phba->mbox_mem_pool); |
| 1621 | return 0; |
| 1622 | } |
| 1623 | |
| 1624 | /** |
| 1625 | * lpfcdiag_loop_self_unreg - unregs from the rpi |
| 1626 | * @phba: Pointer to HBA context object |
| 1627 | * @rpi: Remote port login id |
| 1628 | * |
| 1629 | * This function unregisters the rpi obtained in lpfcdiag_loop_self_reg |
| 1630 | **/ |
| 1631 | static int lpfcdiag_loop_self_unreg(struct lpfc_hba *phba, uint16_t rpi) |
| 1632 | { |
| 1633 | LPFC_MBOXQ_t *mbox; |
| 1634 | int status; |
| 1635 | |
| 1636 | /* Allocate mboxq structure */ |
| 1637 | mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| 1638 | if (mbox == NULL) |
| 1639 | return ENOMEM; |
| 1640 | |
| 1641 | lpfc_unreg_login(phba, 0, rpi, mbox); |
| 1642 | status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); |
| 1643 | |
| 1644 | if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) { |
| 1645 | if (status != MBX_TIMEOUT) |
| 1646 | mempool_free(mbox, phba->mbox_mem_pool); |
| 1647 | return EIO; |
| 1648 | } |
| 1649 | |
| 1650 | mempool_free(mbox, phba->mbox_mem_pool); |
| 1651 | return 0; |
| 1652 | } |
| 1653 | |
| 1654 | /** |
| 1655 | * lpfcdiag_loop_get_xri - obtains the transmit and receive ids |
| 1656 | * @phba: Pointer to HBA context object |
| 1657 | * @rpi: Remote port login id |
| 1658 | * @txxri: Pointer to transmit exchange id |
| 1659 | * @rxxri: Pointer to response exchabge id |
| 1660 | * |
| 1661 | * This function obtains the transmit and receive ids required to send |
| 1662 | * an unsolicited ct command with a payload. A special lpfc FsType and CmdRsp |
| 1663 | * flags are used to the unsolicted response handler is able to process |
| 1664 | * the ct command sent on the same port. |
| 1665 | **/ |
| 1666 | static int lpfcdiag_loop_get_xri(struct lpfc_hba *phba, uint16_t rpi, |
| 1667 | uint16_t *txxri, uint16_t * rxxri) |
| 1668 | { |
| 1669 | struct lpfc_bsg_event *evt; |
| 1670 | struct lpfc_iocbq *cmdiocbq, *rspiocbq; |
| 1671 | IOCB_t *cmd, *rsp; |
| 1672 | struct lpfc_dmabuf *dmabuf; |
| 1673 | struct ulp_bde64 *bpl = NULL; |
| 1674 | struct lpfc_sli_ct_request *ctreq = NULL; |
| 1675 | int ret_val = 0; |
| 1676 | unsigned long flags; |
| 1677 | |
| 1678 | *txxri = 0; |
| 1679 | *rxxri = 0; |
| 1680 | evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid, |
| 1681 | SLI_CT_ELX_LOOPBACK); |
| 1682 | if (!evt) |
| 1683 | return ENOMEM; |
| 1684 | |
| 1685 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
| 1686 | list_add(&evt->node, &phba->ct_ev_waiters); |
| 1687 | lpfc_bsg_event_ref(evt); |
| 1688 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 1689 | |
| 1690 | cmdiocbq = lpfc_sli_get_iocbq(phba); |
| 1691 | rspiocbq = lpfc_sli_get_iocbq(phba); |
| 1692 | |
| 1693 | dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); |
| 1694 | if (dmabuf) { |
| 1695 | dmabuf->virt = lpfc_mbuf_alloc(phba, 0, &dmabuf->phys); |
| 1696 | INIT_LIST_HEAD(&dmabuf->list); |
| 1697 | bpl = (struct ulp_bde64 *) dmabuf->virt; |
| 1698 | memset(bpl, 0, sizeof(*bpl)); |
| 1699 | ctreq = (struct lpfc_sli_ct_request *)(bpl + 1); |
| 1700 | bpl->addrHigh = |
| 1701 | le32_to_cpu(putPaddrHigh(dmabuf->phys + sizeof(*bpl))); |
| 1702 | bpl->addrLow = |
| 1703 | le32_to_cpu(putPaddrLow(dmabuf->phys + sizeof(*bpl))); |
| 1704 | bpl->tus.f.bdeFlags = 0; |
| 1705 | bpl->tus.f.bdeSize = ELX_LOOPBACK_HEADER_SZ; |
| 1706 | bpl->tus.w = le32_to_cpu(bpl->tus.w); |
| 1707 | } |
| 1708 | |
| 1709 | if (cmdiocbq == NULL || rspiocbq == NULL || |
| 1710 | dmabuf == NULL || bpl == NULL || ctreq == NULL) { |
| 1711 | ret_val = ENOMEM; |
| 1712 | goto err_get_xri_exit; |
| 1713 | } |
| 1714 | |
| 1715 | cmd = &cmdiocbq->iocb; |
| 1716 | rsp = &rspiocbq->iocb; |
| 1717 | |
| 1718 | memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ); |
| 1719 | |
| 1720 | ctreq->RevisionId.bits.Revision = SLI_CT_REVISION; |
| 1721 | ctreq->RevisionId.bits.InId = 0; |
| 1722 | ctreq->FsType = SLI_CT_ELX_LOOPBACK; |
| 1723 | ctreq->FsSubType = 0; |
| 1724 | ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_XRI_SETUP; |
| 1725 | ctreq->CommandResponse.bits.Size = 0; |
| 1726 | |
| 1727 | |
| 1728 | cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(dmabuf->phys); |
| 1729 | cmd->un.xseq64.bdl.addrLow = putPaddrLow(dmabuf->phys); |
| 1730 | cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64; |
| 1731 | cmd->un.xseq64.bdl.bdeSize = sizeof(*bpl); |
| 1732 | |
| 1733 | cmd->un.xseq64.w5.hcsw.Fctl = LA; |
| 1734 | cmd->un.xseq64.w5.hcsw.Dfctl = 0; |
| 1735 | cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL; |
| 1736 | cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT; |
| 1737 | |
| 1738 | cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CR; |
| 1739 | cmd->ulpBdeCount = 1; |
| 1740 | cmd->ulpLe = 1; |
| 1741 | cmd->ulpClass = CLASS3; |
| 1742 | cmd->ulpContext = rpi; |
| 1743 | |
| 1744 | cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC; |
| 1745 | cmdiocbq->vport = phba->pport; |
| 1746 | |
| 1747 | ret_val = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq, |
| 1748 | rspiocbq, |
| 1749 | (phba->fc_ratov * 2) |
| 1750 | + LPFC_DRVR_TIMEOUT); |
| 1751 | if (ret_val) |
| 1752 | goto err_get_xri_exit; |
| 1753 | |
| 1754 | *txxri = rsp->ulpContext; |
| 1755 | |
| 1756 | evt->waiting = 1; |
| 1757 | evt->wait_time_stamp = jiffies; |
| 1758 | ret_val = wait_event_interruptible_timeout( |
| 1759 | evt->wq, !list_empty(&evt->events_to_see), |
| 1760 | ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ); |
| 1761 | if (list_empty(&evt->events_to_see)) |
| 1762 | ret_val = (ret_val) ? EINTR : ETIMEDOUT; |
| 1763 | else { |
| 1764 | ret_val = IOCB_SUCCESS; |
| 1765 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
| 1766 | list_move(evt->events_to_see.prev, &evt->events_to_get); |
| 1767 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 1768 | *rxxri = (list_entry(evt->events_to_get.prev, |
| 1769 | typeof(struct event_data), |
| 1770 | node))->immed_dat; |
| 1771 | } |
| 1772 | evt->waiting = 0; |
| 1773 | |
| 1774 | err_get_xri_exit: |
| 1775 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
| 1776 | lpfc_bsg_event_unref(evt); /* release ref */ |
| 1777 | lpfc_bsg_event_unref(evt); /* delete */ |
| 1778 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 1779 | |
| 1780 | if (dmabuf) { |
| 1781 | if (dmabuf->virt) |
| 1782 | lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys); |
| 1783 | kfree(dmabuf); |
| 1784 | } |
| 1785 | |
| 1786 | if (cmdiocbq && (ret_val != IOCB_TIMEDOUT)) |
| 1787 | lpfc_sli_release_iocbq(phba, cmdiocbq); |
| 1788 | if (rspiocbq) |
| 1789 | lpfc_sli_release_iocbq(phba, rspiocbq); |
| 1790 | return ret_val; |
| 1791 | } |
| 1792 | |
| 1793 | /** |
| 1794 | * diag_cmd_data_alloc - fills in a bde struct with dma buffers |
| 1795 | * @phba: Pointer to HBA context object |
| 1796 | * @bpl: Pointer to 64 bit bde structure |
| 1797 | * @size: Number of bytes to process |
| 1798 | * @nocopydata: Flag to copy user data into the allocated buffer |
| 1799 | * |
| 1800 | * This function allocates page size buffers and populates an lpfc_dmabufext. |
| 1801 | * If allowed the user data pointed to with indataptr is copied into the kernel |
| 1802 | * memory. The chained list of page size buffers is returned. |
| 1803 | **/ |
| 1804 | static struct lpfc_dmabufext * |
| 1805 | diag_cmd_data_alloc(struct lpfc_hba *phba, |
| 1806 | struct ulp_bde64 *bpl, uint32_t size, |
| 1807 | int nocopydata) |
| 1808 | { |
| 1809 | struct lpfc_dmabufext *mlist = NULL; |
| 1810 | struct lpfc_dmabufext *dmp; |
| 1811 | int cnt, offset = 0, i = 0; |
| 1812 | struct pci_dev *pcidev; |
| 1813 | |
| 1814 | pcidev = phba->pcidev; |
| 1815 | |
| 1816 | while (size) { |
| 1817 | /* We get chunks of 4K */ |
| 1818 | if (size > BUF_SZ_4K) |
| 1819 | cnt = BUF_SZ_4K; |
| 1820 | else |
| 1821 | cnt = size; |
| 1822 | |
| 1823 | /* allocate struct lpfc_dmabufext buffer header */ |
| 1824 | dmp = kmalloc(sizeof(struct lpfc_dmabufext), GFP_KERNEL); |
| 1825 | if (!dmp) |
| 1826 | goto out; |
| 1827 | |
| 1828 | INIT_LIST_HEAD(&dmp->dma.list); |
| 1829 | |
| 1830 | /* Queue it to a linked list */ |
| 1831 | if (mlist) |
| 1832 | list_add_tail(&dmp->dma.list, &mlist->dma.list); |
| 1833 | else |
| 1834 | mlist = dmp; |
| 1835 | |
| 1836 | /* allocate buffer */ |
| 1837 | dmp->dma.virt = dma_alloc_coherent(&pcidev->dev, |
| 1838 | cnt, |
| 1839 | &(dmp->dma.phys), |
| 1840 | GFP_KERNEL); |
| 1841 | |
| 1842 | if (!dmp->dma.virt) |
| 1843 | goto out; |
| 1844 | |
| 1845 | dmp->size = cnt; |
| 1846 | |
| 1847 | if (nocopydata) { |
| 1848 | bpl->tus.f.bdeFlags = 0; |
| 1849 | pci_dma_sync_single_for_device(phba->pcidev, |
| 1850 | dmp->dma.phys, LPFC_BPL_SIZE, PCI_DMA_TODEVICE); |
| 1851 | |
| 1852 | } else { |
| 1853 | memset((uint8_t *)dmp->dma.virt, 0, cnt); |
| 1854 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; |
| 1855 | } |
| 1856 | |
| 1857 | /* build buffer ptr list for IOCB */ |
| 1858 | bpl->addrLow = le32_to_cpu(putPaddrLow(dmp->dma.phys)); |
| 1859 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(dmp->dma.phys)); |
| 1860 | bpl->tus.f.bdeSize = (ushort) cnt; |
| 1861 | bpl->tus.w = le32_to_cpu(bpl->tus.w); |
| 1862 | bpl++; |
| 1863 | |
| 1864 | i++; |
| 1865 | offset += cnt; |
| 1866 | size -= cnt; |
| 1867 | } |
| 1868 | |
| 1869 | mlist->flag = i; |
| 1870 | return mlist; |
| 1871 | out: |
| 1872 | diag_cmd_data_free(phba, mlist); |
| 1873 | return NULL; |
| 1874 | } |
| 1875 | |
| 1876 | /** |
| 1877 | * lpfcdiag_loop_post_rxbufs - post the receive buffers for an unsol CT cmd |
| 1878 | * @phba: Pointer to HBA context object |
| 1879 | * @rxxri: Receive exchange id |
| 1880 | * @len: Number of data bytes |
| 1881 | * |
| 1882 | * This function allocates and posts a data buffer of sufficient size to recieve |
| 1883 | * an unsolicted CT command. |
| 1884 | **/ |
| 1885 | static int lpfcdiag_loop_post_rxbufs(struct lpfc_hba *phba, uint16_t rxxri, |
| 1886 | size_t len) |
| 1887 | { |
| 1888 | struct lpfc_sli *psli = &phba->sli; |
| 1889 | struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING]; |
| 1890 | struct lpfc_iocbq *cmdiocbq; |
| 1891 | IOCB_t *cmd = NULL; |
| 1892 | struct list_head head, *curr, *next; |
| 1893 | struct lpfc_dmabuf *rxbmp; |
| 1894 | struct lpfc_dmabuf *dmp; |
| 1895 | struct lpfc_dmabuf *mp[2] = {NULL, NULL}; |
| 1896 | struct ulp_bde64 *rxbpl = NULL; |
| 1897 | uint32_t num_bde; |
| 1898 | struct lpfc_dmabufext *rxbuffer = NULL; |
| 1899 | int ret_val = 0; |
| 1900 | int i = 0; |
| 1901 | |
| 1902 | cmdiocbq = lpfc_sli_get_iocbq(phba); |
| 1903 | rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); |
| 1904 | if (rxbmp != NULL) { |
| 1905 | rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys); |
| 1906 | INIT_LIST_HEAD(&rxbmp->list); |
| 1907 | rxbpl = (struct ulp_bde64 *) rxbmp->virt; |
| 1908 | rxbuffer = diag_cmd_data_alloc(phba, rxbpl, len, 0); |
| 1909 | } |
| 1910 | |
| 1911 | if (!cmdiocbq || !rxbmp || !rxbpl || !rxbuffer) { |
| 1912 | ret_val = ENOMEM; |
| 1913 | goto err_post_rxbufs_exit; |
| 1914 | } |
| 1915 | |
| 1916 | /* Queue buffers for the receive exchange */ |
| 1917 | num_bde = (uint32_t)rxbuffer->flag; |
| 1918 | dmp = &rxbuffer->dma; |
| 1919 | |
| 1920 | cmd = &cmdiocbq->iocb; |
| 1921 | i = 0; |
| 1922 | |
| 1923 | INIT_LIST_HEAD(&head); |
| 1924 | list_add_tail(&head, &dmp->list); |
| 1925 | list_for_each_safe(curr, next, &head) { |
| 1926 | mp[i] = list_entry(curr, struct lpfc_dmabuf, list); |
| 1927 | list_del(curr); |
| 1928 | |
| 1929 | if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { |
| 1930 | mp[i]->buffer_tag = lpfc_sli_get_buffer_tag(phba); |
| 1931 | cmd->un.quexri64cx.buff.bde.addrHigh = |
| 1932 | putPaddrHigh(mp[i]->phys); |
| 1933 | cmd->un.quexri64cx.buff.bde.addrLow = |
| 1934 | putPaddrLow(mp[i]->phys); |
| 1935 | cmd->un.quexri64cx.buff.bde.tus.f.bdeSize = |
| 1936 | ((struct lpfc_dmabufext *)mp[i])->size; |
| 1937 | cmd->un.quexri64cx.buff.buffer_tag = mp[i]->buffer_tag; |
| 1938 | cmd->ulpCommand = CMD_QUE_XRI64_CX; |
| 1939 | cmd->ulpPU = 0; |
| 1940 | cmd->ulpLe = 1; |
| 1941 | cmd->ulpBdeCount = 1; |
| 1942 | cmd->unsli3.que_xri64cx_ext_words.ebde_count = 0; |
| 1943 | |
| 1944 | } else { |
| 1945 | cmd->un.cont64[i].addrHigh = putPaddrHigh(mp[i]->phys); |
| 1946 | cmd->un.cont64[i].addrLow = putPaddrLow(mp[i]->phys); |
| 1947 | cmd->un.cont64[i].tus.f.bdeSize = |
| 1948 | ((struct lpfc_dmabufext *)mp[i])->size; |
| 1949 | cmd->ulpBdeCount = ++i; |
| 1950 | |
| 1951 | if ((--num_bde > 0) && (i < 2)) |
| 1952 | continue; |
| 1953 | |
| 1954 | cmd->ulpCommand = CMD_QUE_XRI_BUF64_CX; |
| 1955 | cmd->ulpLe = 1; |
| 1956 | } |
| 1957 | |
| 1958 | cmd->ulpClass = CLASS3; |
| 1959 | cmd->ulpContext = rxxri; |
| 1960 | |
| 1961 | ret_val = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0); |
| 1962 | |
| 1963 | if (ret_val == IOCB_ERROR) { |
| 1964 | diag_cmd_data_free(phba, |
| 1965 | (struct lpfc_dmabufext *)mp[0]); |
| 1966 | if (mp[1]) |
| 1967 | diag_cmd_data_free(phba, |
| 1968 | (struct lpfc_dmabufext *)mp[1]); |
| 1969 | dmp = list_entry(next, struct lpfc_dmabuf, list); |
| 1970 | ret_val = EIO; |
| 1971 | goto err_post_rxbufs_exit; |
| 1972 | } |
| 1973 | |
| 1974 | lpfc_sli_ringpostbuf_put(phba, pring, mp[0]); |
| 1975 | if (mp[1]) { |
| 1976 | lpfc_sli_ringpostbuf_put(phba, pring, mp[1]); |
| 1977 | mp[1] = NULL; |
| 1978 | } |
| 1979 | |
| 1980 | /* The iocb was freed by lpfc_sli_issue_iocb */ |
| 1981 | cmdiocbq = lpfc_sli_get_iocbq(phba); |
| 1982 | if (!cmdiocbq) { |
| 1983 | dmp = list_entry(next, struct lpfc_dmabuf, list); |
| 1984 | ret_val = EIO; |
| 1985 | goto err_post_rxbufs_exit; |
| 1986 | } |
| 1987 | |
| 1988 | cmd = &cmdiocbq->iocb; |
| 1989 | i = 0; |
| 1990 | } |
| 1991 | list_del(&head); |
| 1992 | |
| 1993 | err_post_rxbufs_exit: |
| 1994 | |
| 1995 | if (rxbmp) { |
| 1996 | if (rxbmp->virt) |
| 1997 | lpfc_mbuf_free(phba, rxbmp->virt, rxbmp->phys); |
| 1998 | kfree(rxbmp); |
| 1999 | } |
| 2000 | |
| 2001 | if (cmdiocbq) |
| 2002 | lpfc_sli_release_iocbq(phba, cmdiocbq); |
| 2003 | return ret_val; |
| 2004 | } |
| 2005 | |
| 2006 | /** |
| 2007 | * lpfc_bsg_diag_test - with a port in loopback issues a Ct cmd to itself |
| 2008 | * @job: LPFC_BSG_VENDOR_DIAG_TEST fc_bsg_job |
| 2009 | * |
| 2010 | * This function receives a user data buffer to be transmitted and received on |
| 2011 | * the same port, the link must be up and in loopback mode prior |
| 2012 | * to being called. |
| 2013 | * 1. A kernel buffer is allocated to copy the user data into. |
| 2014 | * 2. The port registers with "itself". |
| 2015 | * 3. The transmit and receive exchange ids are obtained. |
| 2016 | * 4. The receive exchange id is posted. |
| 2017 | * 5. A new els loopback event is created. |
| 2018 | * 6. The command and response iocbs are allocated. |
| 2019 | * 7. The cmd iocb FsType is set to elx loopback and the CmdRsp to looppback. |
| 2020 | * |
| 2021 | * This function is meant to be called n times while the port is in loopback |
| 2022 | * so it is the apps responsibility to issue a reset to take the port out |
| 2023 | * of loopback mode. |
| 2024 | **/ |
| 2025 | static int |
| 2026 | lpfc_bsg_diag_test(struct fc_bsg_job *job) |
| 2027 | { |
| 2028 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
| 2029 | struct lpfc_hba *phba = vport->phba; |
| 2030 | struct diag_mode_test *diag_mode; |
| 2031 | struct lpfc_bsg_event *evt; |
| 2032 | struct event_data *evdat; |
| 2033 | struct lpfc_sli *psli = &phba->sli; |
| 2034 | uint32_t size; |
| 2035 | uint32_t full_size; |
| 2036 | size_t segment_len = 0, segment_offset = 0, current_offset = 0; |
| 2037 | uint16_t rpi; |
| 2038 | struct lpfc_iocbq *cmdiocbq, *rspiocbq; |
| 2039 | IOCB_t *cmd, *rsp; |
| 2040 | struct lpfc_sli_ct_request *ctreq; |
| 2041 | struct lpfc_dmabuf *txbmp; |
| 2042 | struct ulp_bde64 *txbpl = NULL; |
| 2043 | struct lpfc_dmabufext *txbuffer = NULL; |
| 2044 | struct list_head head; |
| 2045 | struct lpfc_dmabuf *curr; |
| 2046 | uint16_t txxri, rxxri; |
| 2047 | uint32_t num_bde; |
| 2048 | uint8_t *ptr = NULL, *rx_databuf = NULL; |
| 2049 | int rc = 0; |
| 2050 | unsigned long flags; |
| 2051 | void *dataout = NULL; |
| 2052 | uint32_t total_mem; |
| 2053 | |
| 2054 | /* in case no data is returned return just the return code */ |
| 2055 | job->reply->reply_payload_rcv_len = 0; |
| 2056 | |
| 2057 | if (job->request_len < |
| 2058 | sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_test)) { |
| 2059 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 2060 | "2739 Received DIAG TEST request below minimum " |
| 2061 | "size\n"); |
| 2062 | rc = -EINVAL; |
| 2063 | goto loopback_test_exit; |
| 2064 | } |
| 2065 | |
| 2066 | if (job->request_payload.payload_len != |
| 2067 | job->reply_payload.payload_len) { |
| 2068 | rc = -EINVAL; |
| 2069 | goto loopback_test_exit; |
| 2070 | } |
| 2071 | |
| 2072 | diag_mode = (struct diag_mode_test *) |
| 2073 | job->request->rqst_data.h_vendor.vendor_cmd; |
| 2074 | |
| 2075 | if ((phba->link_state == LPFC_HBA_ERROR) || |
| 2076 | (psli->sli_flag & LPFC_BLOCK_MGMT_IO) || |
| 2077 | (!(psli->sli_flag & LPFC_SLI_ACTIVE))) { |
| 2078 | rc = -EACCES; |
| 2079 | goto loopback_test_exit; |
| 2080 | } |
| 2081 | |
| 2082 | if (!lpfc_is_link_up(phba) || !(phba->link_flag & LS_LOOPBACK_MODE)) { |
| 2083 | rc = -EACCES; |
| 2084 | goto loopback_test_exit; |
| 2085 | } |
| 2086 | |
| 2087 | size = job->request_payload.payload_len; |
| 2088 | full_size = size + ELX_LOOPBACK_HEADER_SZ; /* plus the header */ |
| 2089 | |
| 2090 | if ((size == 0) || (size > 80 * BUF_SZ_4K)) { |
| 2091 | rc = -ERANGE; |
| 2092 | goto loopback_test_exit; |
| 2093 | } |
| 2094 | |
| 2095 | if (size >= BUF_SZ_4K) { |
| 2096 | /* |
| 2097 | * Allocate memory for ioctl data. If buffer is bigger than 64k, |
| 2098 | * then we allocate 64k and re-use that buffer over and over to |
| 2099 | * xfer the whole block. This is because Linux kernel has a |
| 2100 | * problem allocating more than 120k of kernel space memory. Saw |
| 2101 | * problem with GET_FCPTARGETMAPPING... |
| 2102 | */ |
| 2103 | if (size <= (64 * 1024)) |
| 2104 | total_mem = size; |
| 2105 | else |
| 2106 | total_mem = 64 * 1024; |
| 2107 | } else |
| 2108 | /* Allocate memory for ioctl data */ |
| 2109 | total_mem = BUF_SZ_4K; |
| 2110 | |
| 2111 | dataout = kmalloc(total_mem, GFP_KERNEL); |
| 2112 | if (dataout == NULL) { |
| 2113 | rc = -ENOMEM; |
| 2114 | goto loopback_test_exit; |
| 2115 | } |
| 2116 | |
| 2117 | ptr = dataout; |
| 2118 | ptr += ELX_LOOPBACK_HEADER_SZ; |
| 2119 | sg_copy_to_buffer(job->request_payload.sg_list, |
| 2120 | job->request_payload.sg_cnt, |
| 2121 | ptr, size); |
| 2122 | |
| 2123 | rc = lpfcdiag_loop_self_reg(phba, &rpi); |
| 2124 | if (rc) { |
| 2125 | rc = -ENOMEM; |
| 2126 | goto loopback_test_exit; |
| 2127 | } |
| 2128 | |
| 2129 | rc = lpfcdiag_loop_get_xri(phba, rpi, &txxri, &rxxri); |
| 2130 | if (rc) { |
| 2131 | lpfcdiag_loop_self_unreg(phba, rpi); |
| 2132 | rc = -ENOMEM; |
| 2133 | goto loopback_test_exit; |
| 2134 | } |
| 2135 | |
| 2136 | rc = lpfcdiag_loop_post_rxbufs(phba, rxxri, full_size); |
| 2137 | if (rc) { |
| 2138 | lpfcdiag_loop_self_unreg(phba, rpi); |
| 2139 | rc = -ENOMEM; |
| 2140 | goto loopback_test_exit; |
| 2141 | } |
| 2142 | |
| 2143 | evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid, |
| 2144 | SLI_CT_ELX_LOOPBACK); |
| 2145 | if (!evt) { |
| 2146 | lpfcdiag_loop_self_unreg(phba, rpi); |
| 2147 | rc = -ENOMEM; |
| 2148 | goto loopback_test_exit; |
| 2149 | } |
| 2150 | |
| 2151 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
| 2152 | list_add(&evt->node, &phba->ct_ev_waiters); |
| 2153 | lpfc_bsg_event_ref(evt); |
| 2154 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 2155 | |
| 2156 | cmdiocbq = lpfc_sli_get_iocbq(phba); |
| 2157 | rspiocbq = lpfc_sli_get_iocbq(phba); |
| 2158 | txbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); |
| 2159 | |
| 2160 | if (txbmp) { |
| 2161 | txbmp->virt = lpfc_mbuf_alloc(phba, 0, &txbmp->phys); |
| 2162 | INIT_LIST_HEAD(&txbmp->list); |
| 2163 | txbpl = (struct ulp_bde64 *) txbmp->virt; |
| 2164 | if (txbpl) |
| 2165 | txbuffer = diag_cmd_data_alloc(phba, |
| 2166 | txbpl, full_size, 0); |
| 2167 | } |
| 2168 | |
| 2169 | if (!cmdiocbq || !rspiocbq || !txbmp || !txbpl || !txbuffer) { |
| 2170 | rc = -ENOMEM; |
| 2171 | goto err_loopback_test_exit; |
| 2172 | } |
| 2173 | |
| 2174 | cmd = &cmdiocbq->iocb; |
| 2175 | rsp = &rspiocbq->iocb; |
| 2176 | |
| 2177 | INIT_LIST_HEAD(&head); |
| 2178 | list_add_tail(&head, &txbuffer->dma.list); |
| 2179 | list_for_each_entry(curr, &head, list) { |
| 2180 | segment_len = ((struct lpfc_dmabufext *)curr)->size; |
| 2181 | if (current_offset == 0) { |
| 2182 | ctreq = curr->virt; |
| 2183 | memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ); |
| 2184 | ctreq->RevisionId.bits.Revision = SLI_CT_REVISION; |
| 2185 | ctreq->RevisionId.bits.InId = 0; |
| 2186 | ctreq->FsType = SLI_CT_ELX_LOOPBACK; |
| 2187 | ctreq->FsSubType = 0; |
| 2188 | ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_DATA; |
| 2189 | ctreq->CommandResponse.bits.Size = size; |
| 2190 | segment_offset = ELX_LOOPBACK_HEADER_SZ; |
| 2191 | } else |
| 2192 | segment_offset = 0; |
| 2193 | |
| 2194 | BUG_ON(segment_offset >= segment_len); |
| 2195 | memcpy(curr->virt + segment_offset, |
| 2196 | ptr + current_offset, |
| 2197 | segment_len - segment_offset); |
| 2198 | |
| 2199 | current_offset += segment_len - segment_offset; |
| 2200 | BUG_ON(current_offset > size); |
| 2201 | } |
| 2202 | list_del(&head); |
| 2203 | |
| 2204 | /* Build the XMIT_SEQUENCE iocb */ |
| 2205 | |
| 2206 | num_bde = (uint32_t)txbuffer->flag; |
| 2207 | |
| 2208 | cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(txbmp->phys); |
| 2209 | cmd->un.xseq64.bdl.addrLow = putPaddrLow(txbmp->phys); |
| 2210 | cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64; |
| 2211 | cmd->un.xseq64.bdl.bdeSize = (num_bde * sizeof(struct ulp_bde64)); |
| 2212 | |
| 2213 | cmd->un.xseq64.w5.hcsw.Fctl = (LS | LA); |
| 2214 | cmd->un.xseq64.w5.hcsw.Dfctl = 0; |
| 2215 | cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL; |
| 2216 | cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT; |
| 2217 | |
| 2218 | cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX; |
| 2219 | cmd->ulpBdeCount = 1; |
| 2220 | cmd->ulpLe = 1; |
| 2221 | cmd->ulpClass = CLASS3; |
| 2222 | cmd->ulpContext = txxri; |
| 2223 | |
| 2224 | cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC; |
| 2225 | cmdiocbq->vport = phba->pport; |
| 2226 | |
| 2227 | rc = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq, rspiocbq, |
| 2228 | (phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT); |
| 2229 | |
| 2230 | if ((rc != IOCB_SUCCESS) || (rsp->ulpStatus != IOCB_SUCCESS)) { |
| 2231 | rc = -EIO; |
| 2232 | goto err_loopback_test_exit; |
| 2233 | } |
| 2234 | |
| 2235 | evt->waiting = 1; |
| 2236 | rc = wait_event_interruptible_timeout( |
| 2237 | evt->wq, !list_empty(&evt->events_to_see), |
| 2238 | ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ); |
| 2239 | evt->waiting = 0; |
| 2240 | if (list_empty(&evt->events_to_see)) |
| 2241 | rc = (rc) ? -EINTR : -ETIMEDOUT; |
| 2242 | else { |
| 2243 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
| 2244 | list_move(evt->events_to_see.prev, &evt->events_to_get); |
| 2245 | evdat = list_entry(evt->events_to_get.prev, |
| 2246 | typeof(*evdat), node); |
| 2247 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 2248 | rx_databuf = evdat->data; |
| 2249 | if (evdat->len != full_size) { |
| 2250 | lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, |
| 2251 | "1603 Loopback test did not receive expected " |
| 2252 | "data length. actual length 0x%x expected " |
| 2253 | "length 0x%x\n", |
| 2254 | evdat->len, full_size); |
| 2255 | rc = -EIO; |
| 2256 | } else if (rx_databuf == NULL) |
| 2257 | rc = -EIO; |
| 2258 | else { |
| 2259 | rc = IOCB_SUCCESS; |
| 2260 | /* skip over elx loopback header */ |
| 2261 | rx_databuf += ELX_LOOPBACK_HEADER_SZ; |
| 2262 | job->reply->reply_payload_rcv_len = |
| 2263 | sg_copy_from_buffer(job->reply_payload.sg_list, |
| 2264 | job->reply_payload.sg_cnt, |
| 2265 | rx_databuf, size); |
| 2266 | job->reply->reply_payload_rcv_len = size; |
| 2267 | } |
| 2268 | } |
| 2269 | |
| 2270 | err_loopback_test_exit: |
| 2271 | lpfcdiag_loop_self_unreg(phba, rpi); |
| 2272 | |
| 2273 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
| 2274 | lpfc_bsg_event_unref(evt); /* release ref */ |
| 2275 | lpfc_bsg_event_unref(evt); /* delete */ |
| 2276 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 2277 | |
| 2278 | if (cmdiocbq != NULL) |
| 2279 | lpfc_sli_release_iocbq(phba, cmdiocbq); |
| 2280 | |
| 2281 | if (rspiocbq != NULL) |
| 2282 | lpfc_sli_release_iocbq(phba, rspiocbq); |
| 2283 | |
| 2284 | if (txbmp != NULL) { |
| 2285 | if (txbpl != NULL) { |
| 2286 | if (txbuffer != NULL) |
| 2287 | diag_cmd_data_free(phba, txbuffer); |
| 2288 | lpfc_mbuf_free(phba, txbmp->virt, txbmp->phys); |
| 2289 | } |
| 2290 | kfree(txbmp); |
| 2291 | } |
| 2292 | |
| 2293 | loopback_test_exit: |
| 2294 | kfree(dataout); |
| 2295 | /* make error code available to userspace */ |
| 2296 | job->reply->result = rc; |
| 2297 | job->dd_data = NULL; |
| 2298 | /* complete the job back to userspace if no error */ |
| 2299 | if (rc == 0) |
| 2300 | job->job_done(job); |
| 2301 | return rc; |
| 2302 | } |
| 2303 | |
| 2304 | /** |
| 2305 | * lpfc_bsg_get_dfc_rev - process a GET_DFC_REV bsg vendor command |
| 2306 | * @job: GET_DFC_REV fc_bsg_job |
| 2307 | **/ |
| 2308 | static int |
| 2309 | lpfc_bsg_get_dfc_rev(struct fc_bsg_job *job) |
| 2310 | { |
| 2311 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
| 2312 | struct lpfc_hba *phba = vport->phba; |
| 2313 | struct get_mgmt_rev *event_req; |
| 2314 | struct get_mgmt_rev_reply *event_reply; |
| 2315 | int rc = 0; |
| 2316 | |
| 2317 | if (job->request_len < |
| 2318 | sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev)) { |
| 2319 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 2320 | "2740 Received GET_DFC_REV request below " |
| 2321 | "minimum size\n"); |
| 2322 | rc = -EINVAL; |
| 2323 | goto job_error; |
| 2324 | } |
| 2325 | |
| 2326 | event_req = (struct get_mgmt_rev *) |
| 2327 | job->request->rqst_data.h_vendor.vendor_cmd; |
| 2328 | |
| 2329 | event_reply = (struct get_mgmt_rev_reply *) |
| 2330 | job->reply->reply_data.vendor_reply.vendor_rsp; |
| 2331 | |
| 2332 | if (job->reply_len < |
| 2333 | sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev_reply)) { |
| 2334 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 2335 | "2741 Received GET_DFC_REV reply below " |
| 2336 | "minimum size\n"); |
| 2337 | rc = -EINVAL; |
| 2338 | goto job_error; |
| 2339 | } |
| 2340 | |
| 2341 | event_reply->info.a_Major = MANAGEMENT_MAJOR_REV; |
| 2342 | event_reply->info.a_Minor = MANAGEMENT_MINOR_REV; |
| 2343 | job_error: |
| 2344 | job->reply->result = rc; |
| 2345 | if (rc == 0) |
| 2346 | job->job_done(job); |
| 2347 | return rc; |
| 2348 | } |
| 2349 | |
| 2350 | /** |
| 2351 | * lpfc_bsg_wake_mbox_wait - lpfc_bsg_issue_mbox mbox completion handler |
| 2352 | * @phba: Pointer to HBA context object. |
| 2353 | * @pmboxq: Pointer to mailbox command. |
| 2354 | * |
| 2355 | * This is completion handler function for mailbox commands issued from |
| 2356 | * lpfc_bsg_issue_mbox function. This function is called by the |
| 2357 | * mailbox event handler function with no lock held. This function |
| 2358 | * will wake up thread waiting on the wait queue pointed by context1 |
| 2359 | * of the mailbox. |
| 2360 | **/ |
| 2361 | void |
| 2362 | lpfc_bsg_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq) |
| 2363 | { |
| 2364 | struct bsg_job_data *dd_data; |
| 2365 | MAILBOX_t *pmb; |
| 2366 | MAILBOX_t *mb; |
| 2367 | struct fc_bsg_job *job; |
| 2368 | uint32_t size; |
| 2369 | unsigned long flags; |
| 2370 | |
| 2371 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
| 2372 | dd_data = pmboxq->context1; |
| 2373 | if (!dd_data) { |
| 2374 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 2375 | return; |
| 2376 | } |
| 2377 | |
| 2378 | pmb = &dd_data->context_un.mbox.pmboxq->u.mb; |
| 2379 | mb = dd_data->context_un.mbox.mb; |
| 2380 | job = dd_data->context_un.mbox.set_job; |
| 2381 | memcpy(mb, pmb, sizeof(*pmb)); |
| 2382 | size = job->request_payload.payload_len; |
| 2383 | job->reply->reply_payload_rcv_len = |
| 2384 | sg_copy_from_buffer(job->reply_payload.sg_list, |
| 2385 | job->reply_payload.sg_cnt, |
| 2386 | mb, size); |
| 2387 | job->reply->result = 0; |
| 2388 | dd_data->context_un.mbox.set_job = NULL; |
| 2389 | job->dd_data = NULL; |
| 2390 | job->job_done(job); |
| 2391 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 2392 | mempool_free(dd_data->context_un.mbox.pmboxq, phba->mbox_mem_pool); |
| 2393 | kfree(mb); |
| 2394 | kfree(dd_data); |
| 2395 | return; |
| 2396 | } |
| 2397 | |
| 2398 | /** |
| 2399 | * lpfc_bsg_check_cmd_access - test for a supported mailbox command |
| 2400 | * @phba: Pointer to HBA context object. |
| 2401 | * @mb: Pointer to a mailbox object. |
| 2402 | * @vport: Pointer to a vport object. |
| 2403 | * |
| 2404 | * Some commands require the port to be offline, some may not be called from |
| 2405 | * the application. |
| 2406 | **/ |
| 2407 | static int lpfc_bsg_check_cmd_access(struct lpfc_hba *phba, |
| 2408 | MAILBOX_t *mb, struct lpfc_vport *vport) |
| 2409 | { |
| 2410 | /* return negative error values for bsg job */ |
| 2411 | switch (mb->mbxCommand) { |
| 2412 | /* Offline only */ |
| 2413 | case MBX_INIT_LINK: |
| 2414 | case MBX_DOWN_LINK: |
| 2415 | case MBX_CONFIG_LINK: |
| 2416 | case MBX_CONFIG_RING: |
| 2417 | case MBX_RESET_RING: |
| 2418 | case MBX_UNREG_LOGIN: |
| 2419 | case MBX_CLEAR_LA: |
| 2420 | case MBX_DUMP_CONTEXT: |
| 2421 | case MBX_RUN_DIAGS: |
| 2422 | case MBX_RESTART: |
| 2423 | case MBX_SET_MASK: |
| 2424 | if (!(vport->fc_flag & FC_OFFLINE_MODE)) { |
| 2425 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 2426 | "2743 Command 0x%x is illegal in on-line " |
| 2427 | "state\n", |
| 2428 | mb->mbxCommand); |
| 2429 | return -EPERM; |
| 2430 | } |
| 2431 | case MBX_WRITE_NV: |
| 2432 | case MBX_WRITE_VPARMS: |
| 2433 | case MBX_LOAD_SM: |
| 2434 | case MBX_READ_NV: |
| 2435 | case MBX_READ_CONFIG: |
| 2436 | case MBX_READ_RCONFIG: |
| 2437 | case MBX_READ_STATUS: |
| 2438 | case MBX_READ_XRI: |
| 2439 | case MBX_READ_REV: |
| 2440 | case MBX_READ_LNK_STAT: |
| 2441 | case MBX_DUMP_MEMORY: |
| 2442 | case MBX_DOWN_LOAD: |
| 2443 | case MBX_UPDATE_CFG: |
| 2444 | case MBX_KILL_BOARD: |
| 2445 | case MBX_LOAD_AREA: |
| 2446 | case MBX_LOAD_EXP_ROM: |
| 2447 | case MBX_BEACON: |
| 2448 | case MBX_DEL_LD_ENTRY: |
| 2449 | case MBX_SET_DEBUG: |
| 2450 | case MBX_WRITE_WWN: |
| 2451 | case MBX_SLI4_CONFIG: |
| 2452 | case MBX_READ_EVENT_LOG_STATUS: |
| 2453 | case MBX_WRITE_EVENT_LOG: |
| 2454 | case MBX_PORT_CAPABILITIES: |
| 2455 | case MBX_PORT_IOV_CONTROL: |
| 2456 | break; |
| 2457 | case MBX_SET_VARIABLE: |
| 2458 | case MBX_RUN_BIU_DIAG64: |
| 2459 | case MBX_READ_EVENT_LOG: |
| 2460 | case MBX_READ_SPARM64: |
| 2461 | case MBX_READ_LA: |
| 2462 | case MBX_READ_LA64: |
| 2463 | case MBX_REG_LOGIN: |
| 2464 | case MBX_REG_LOGIN64: |
| 2465 | case MBX_CONFIG_PORT: |
| 2466 | case MBX_RUN_BIU_DIAG: |
| 2467 | default: |
| 2468 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 2469 | "2742 Unknown Command 0x%x\n", |
| 2470 | mb->mbxCommand); |
| 2471 | return -EPERM; |
| 2472 | } |
| 2473 | |
| 2474 | return 0; /* ok */ |
| 2475 | } |
| 2476 | |
| 2477 | /** |
| 2478 | * lpfc_bsg_issue_mbox - issues a mailbox command on behalf of an app |
| 2479 | * @phba: Pointer to HBA context object. |
| 2480 | * @mb: Pointer to a mailbox object. |
| 2481 | * @vport: Pointer to a vport object. |
| 2482 | * |
| 2483 | * Allocate a tracking object, mailbox command memory, get a mailbox |
| 2484 | * from the mailbox pool, copy the caller mailbox command. |
| 2485 | * |
| 2486 | * If offline and the sli is active we need to poll for the command (port is |
| 2487 | * being reset) and com-plete the job, otherwise issue the mailbox command and |
| 2488 | * let our completion handler finish the command. |
| 2489 | **/ |
| 2490 | static uint32_t |
| 2491 | lpfc_bsg_issue_mbox(struct lpfc_hba *phba, struct fc_bsg_job *job, |
| 2492 | struct lpfc_vport *vport) |
| 2493 | { |
| 2494 | LPFC_MBOXQ_t *pmboxq; |
| 2495 | MAILBOX_t *pmb; |
| 2496 | MAILBOX_t *mb; |
| 2497 | struct bsg_job_data *dd_data; |
| 2498 | uint32_t size; |
| 2499 | int rc = 0; |
| 2500 | |
| 2501 | /* allocate our bsg tracking structure */ |
| 2502 | dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); |
| 2503 | if (!dd_data) { |
| 2504 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 2505 | "2727 Failed allocation of dd_data\n"); |
| 2506 | return -ENOMEM; |
| 2507 | } |
| 2508 | |
| 2509 | mb = kzalloc(PAGE_SIZE, GFP_KERNEL); |
| 2510 | if (!mb) { |
| 2511 | kfree(dd_data); |
| 2512 | return -ENOMEM; |
| 2513 | } |
| 2514 | |
| 2515 | pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| 2516 | if (!pmboxq) { |
| 2517 | kfree(dd_data); |
| 2518 | kfree(mb); |
| 2519 | return -ENOMEM; |
| 2520 | } |
| 2521 | |
| 2522 | size = job->request_payload.payload_len; |
| 2523 | job->reply->reply_payload_rcv_len = |
| 2524 | sg_copy_to_buffer(job->request_payload.sg_list, |
| 2525 | job->request_payload.sg_cnt, |
| 2526 | mb, size); |
| 2527 | |
| 2528 | rc = lpfc_bsg_check_cmd_access(phba, mb, vport); |
| 2529 | if (rc != 0) { |
| 2530 | kfree(dd_data); |
| 2531 | kfree(mb); |
| 2532 | mempool_free(pmboxq, phba->mbox_mem_pool); |
| 2533 | return rc; /* must be negative */ |
| 2534 | } |
| 2535 | |
| 2536 | memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t)); |
| 2537 | pmb = &pmboxq->u.mb; |
| 2538 | memcpy(pmb, mb, sizeof(*pmb)); |
| 2539 | pmb->mbxOwner = OWN_HOST; |
| 2540 | pmboxq->context1 = NULL; |
| 2541 | pmboxq->vport = vport; |
| 2542 | |
| 2543 | if ((vport->fc_flag & FC_OFFLINE_MODE) || |
| 2544 | (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) { |
| 2545 | rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL); |
| 2546 | if (rc != MBX_SUCCESS) { |
| 2547 | if (rc != MBX_TIMEOUT) { |
| 2548 | kfree(dd_data); |
| 2549 | kfree(mb); |
| 2550 | mempool_free(pmboxq, phba->mbox_mem_pool); |
| 2551 | } |
| 2552 | return (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV; |
| 2553 | } |
| 2554 | |
| 2555 | memcpy(mb, pmb, sizeof(*pmb)); |
| 2556 | job->reply->reply_payload_rcv_len = |
| 2557 | sg_copy_from_buffer(job->reply_payload.sg_list, |
| 2558 | job->reply_payload.sg_cnt, |
| 2559 | mb, size); |
| 2560 | kfree(dd_data); |
| 2561 | kfree(mb); |
| 2562 | mempool_free(pmboxq, phba->mbox_mem_pool); |
| 2563 | /* not waiting mbox already done */ |
| 2564 | return 0; |
| 2565 | } |
| 2566 | |
| 2567 | /* setup wake call as IOCB callback */ |
| 2568 | pmboxq->mbox_cmpl = lpfc_bsg_wake_mbox_wait; |
| 2569 | /* setup context field to pass wait_queue pointer to wake function */ |
| 2570 | pmboxq->context1 = dd_data; |
| 2571 | dd_data->type = TYPE_MBOX; |
| 2572 | dd_data->context_un.mbox.pmboxq = pmboxq; |
| 2573 | dd_data->context_un.mbox.mb = mb; |
| 2574 | dd_data->context_un.mbox.set_job = job; |
| 2575 | job->dd_data = dd_data; |
| 2576 | rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT); |
| 2577 | if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) { |
| 2578 | kfree(dd_data); |
| 2579 | kfree(mb); |
| 2580 | mempool_free(pmboxq, phba->mbox_mem_pool); |
| 2581 | return -EIO; |
| 2582 | } |
| 2583 | |
| 2584 | return 1; |
| 2585 | } |
| 2586 | |
| 2587 | /** |
| 2588 | * lpfc_bsg_mbox_cmd - process an fc bsg LPFC_BSG_VENDOR_MBOX command |
| 2589 | * @job: MBOX fc_bsg_job for LPFC_BSG_VENDOR_MBOX. |
| 2590 | **/ |
| 2591 | static int |
| 2592 | lpfc_bsg_mbox_cmd(struct fc_bsg_job *job) |
| 2593 | { |
| 2594 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
| 2595 | struct lpfc_hba *phba = vport->phba; |
| 2596 | int rc = 0; |
| 2597 | |
| 2598 | /* in case no data is transferred */ |
| 2599 | job->reply->reply_payload_rcv_len = 0; |
| 2600 | if (job->request_len < |
| 2601 | sizeof(struct fc_bsg_request) + sizeof(struct dfc_mbox_req)) { |
| 2602 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
| 2603 | "2737 Received MBOX_REQ request below " |
| 2604 | "minimum size\n"); |
| 2605 | rc = -EINVAL; |
| 2606 | goto job_error; |
| 2607 | } |
| 2608 | |
| 2609 | if (job->request_payload.payload_len != PAGE_SIZE) { |
| 2610 | rc = -EINVAL; |
| 2611 | goto job_error; |
| 2612 | } |
| 2613 | |
| 2614 | if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) { |
| 2615 | rc = -EAGAIN; |
| 2616 | goto job_error; |
| 2617 | } |
| 2618 | |
| 2619 | rc = lpfc_bsg_issue_mbox(phba, job, vport); |
| 2620 | |
| 2621 | job_error: |
| 2622 | if (rc == 0) { |
| 2623 | /* job done */ |
| 2624 | job->reply->result = 0; |
| 2625 | job->dd_data = NULL; |
| 2626 | job->job_done(job); |
| 2627 | } else if (rc == 1) |
| 2628 | /* job submitted, will complete later*/ |
| 2629 | rc = 0; /* return zero, no error */ |
| 2630 | else { |
| 2631 | /* some error occurred */ |
| 2632 | job->reply->result = rc; |
| 2633 | job->dd_data = NULL; |
| 2634 | } |
| 2635 | |
| 2636 | return rc; |
| 2637 | } |
| 2638 | |
| 2639 | /** |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2640 | * lpfc_bsg_hst_vendor - process a vendor-specific fc_bsg_job |
| 2641 | * @job: fc_bsg_job to handle |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 2642 | **/ |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2643 | static int |
| 2644 | lpfc_bsg_hst_vendor(struct fc_bsg_job *job) |
| 2645 | { |
| 2646 | int command = job->request->rqst_data.h_vendor.vendor_cmd[0]; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 2647 | int rc; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2648 | |
| 2649 | switch (command) { |
| 2650 | case LPFC_BSG_VENDOR_SET_CT_EVENT: |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 2651 | rc = lpfc_bsg_hba_set_event(job); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2652 | break; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2653 | case LPFC_BSG_VENDOR_GET_CT_EVENT: |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 2654 | rc = lpfc_bsg_hba_get_event(job); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2655 | break; |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 2656 | case LPFC_BSG_VENDOR_SEND_MGMT_RESP: |
| 2657 | rc = lpfc_bsg_send_mgmt_rsp(job); |
| 2658 | break; |
| 2659 | case LPFC_BSG_VENDOR_DIAG_MODE: |
| 2660 | rc = lpfc_bsg_diag_mode(job); |
| 2661 | break; |
| 2662 | case LPFC_BSG_VENDOR_DIAG_TEST: |
| 2663 | rc = lpfc_bsg_diag_test(job); |
| 2664 | break; |
| 2665 | case LPFC_BSG_VENDOR_GET_MGMT_REV: |
| 2666 | rc = lpfc_bsg_get_dfc_rev(job); |
| 2667 | break; |
| 2668 | case LPFC_BSG_VENDOR_MBOX: |
| 2669 | rc = lpfc_bsg_mbox_cmd(job); |
| 2670 | break; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2671 | default: |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 2672 | rc = -EINVAL; |
| 2673 | job->reply->reply_payload_rcv_len = 0; |
| 2674 | /* make error code available to userspace */ |
| 2675 | job->reply->result = rc; |
| 2676 | break; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2677 | } |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 2678 | |
| 2679 | return rc; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2680 | } |
| 2681 | |
| 2682 | /** |
| 2683 | * lpfc_bsg_request - handle a bsg request from the FC transport |
| 2684 | * @job: fc_bsg_job to handle |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 2685 | **/ |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2686 | int |
| 2687 | lpfc_bsg_request(struct fc_bsg_job *job) |
| 2688 | { |
| 2689 | uint32_t msgcode; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 2690 | int rc; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2691 | |
| 2692 | msgcode = job->request->msgcode; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2693 | switch (msgcode) { |
| 2694 | case FC_BSG_HST_VENDOR: |
| 2695 | rc = lpfc_bsg_hst_vendor(job); |
| 2696 | break; |
| 2697 | case FC_BSG_RPT_ELS: |
| 2698 | rc = lpfc_bsg_rport_els(job); |
| 2699 | break; |
| 2700 | case FC_BSG_RPT_CT: |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 2701 | rc = lpfc_bsg_send_mgmt_cmd(job); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2702 | break; |
| 2703 | default: |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 2704 | rc = -EINVAL; |
| 2705 | job->reply->reply_payload_rcv_len = 0; |
| 2706 | /* make error code available to userspace */ |
| 2707 | job->reply->result = rc; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2708 | break; |
| 2709 | } |
| 2710 | |
| 2711 | return rc; |
| 2712 | } |
| 2713 | |
| 2714 | /** |
| 2715 | * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport |
| 2716 | * @job: fc_bsg_job that has timed out |
| 2717 | * |
| 2718 | * This function just aborts the job's IOCB. The aborted IOCB will return to |
| 2719 | * the waiting function which will handle passing the error back to userspace |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 2720 | **/ |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2721 | int |
| 2722 | lpfc_bsg_timeout(struct fc_bsg_job *job) |
| 2723 | { |
| 2724 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
| 2725 | struct lpfc_hba *phba = vport->phba; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 2726 | struct lpfc_iocbq *cmdiocb; |
| 2727 | struct lpfc_bsg_event *evt; |
| 2728 | struct lpfc_bsg_iocb *iocb; |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 2729 | struct lpfc_bsg_mbox *mbox; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2730 | struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 2731 | struct bsg_job_data *dd_data; |
| 2732 | unsigned long flags; |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2733 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 2734 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
| 2735 | dd_data = (struct bsg_job_data *)job->dd_data; |
| 2736 | /* timeout and completion crossed paths if no dd_data */ |
| 2737 | if (!dd_data) { |
| 2738 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 2739 | return 0; |
| 2740 | } |
| 2741 | |
| 2742 | switch (dd_data->type) { |
| 2743 | case TYPE_IOCB: |
| 2744 | iocb = &dd_data->context_un.iocb; |
| 2745 | cmdiocb = iocb->cmdiocbq; |
| 2746 | /* hint to completion handler that the job timed out */ |
| 2747 | job->reply->result = -EAGAIN; |
| 2748 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 2749 | /* this will call our completion handler */ |
| 2750 | spin_lock_irq(&phba->hbalock); |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2751 | lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb); |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 2752 | spin_unlock_irq(&phba->hbalock); |
| 2753 | break; |
| 2754 | case TYPE_EVT: |
| 2755 | evt = dd_data->context_un.evt; |
| 2756 | /* this event has no job anymore */ |
| 2757 | evt->set_job = NULL; |
| 2758 | job->dd_data = NULL; |
| 2759 | job->reply->reply_payload_rcv_len = 0; |
| 2760 | /* Return -EAGAIN which is our way of signallying the |
| 2761 | * app to retry. |
| 2762 | */ |
| 2763 | job->reply->result = -EAGAIN; |
| 2764 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 2765 | job->job_done(job); |
| 2766 | break; |
James Smart | 3b5dd52 | 2010-01-26 23:10:15 -0500 | [diff] [blame^] | 2767 | case TYPE_MBOX: |
| 2768 | mbox = &dd_data->context_un.mbox; |
| 2769 | /* this mbox has no job anymore */ |
| 2770 | mbox->set_job = NULL; |
| 2771 | job->dd_data = NULL; |
| 2772 | job->reply->reply_payload_rcv_len = 0; |
| 2773 | job->reply->result = -EAGAIN; |
| 2774 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 2775 | job->job_done(job); |
| 2776 | break; |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 2777 | default: |
| 2778 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| 2779 | break; |
| 2780 | } |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2781 | |
James Smart | 4cc0e56 | 2010-01-26 23:09:48 -0500 | [diff] [blame] | 2782 | /* scsi transport fc fc_bsg_job_timeout expects a zero return code, |
| 2783 | * otherwise an error message will be displayed on the console |
| 2784 | * so always return success (zero) |
| 2785 | */ |
James Smart | f1c3b0f | 2009-07-19 10:01:32 -0400 | [diff] [blame] | 2786 | return 0; |
| 2787 | } |