| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| James Smart | 23235 | 92.60% | 121 | 75.62% |
| Johannes Thumshirn | 863 | 3.44% | 7 | 4.38% |
| James Bottomley | 751 | 2.99% | 2 | 1.25% |
| Justin Tee | 64 | 0.26% | 7 | 4.38% |
| Dick Kennedy | 62 | 0.25% | 4 | 2.50% |
| Linas Vepstas | 58 | 0.23% | 1 | 0.62% |
| Bo Wu | 19 | 0.08% | 1 | 0.62% |
| Colin Ian King | 12 | 0.05% | 2 | 1.25% |
| Lee Jones | 7 | 0.03% | 2 | 1.25% |
| Muhammad Usama Anjum | 4 | 0.02% | 1 | 0.62% |
| Jamie Wellnitz | 3 | 0.01% | 1 | 0.62% |
| Li Yang | 2 | 0.01% | 1 | 0.62% |
| Linus Torvalds (pre-git) | 2 | 0.01% | 1 | 0.62% |
| Tomohiro Kusumi | 2 | 0.01% | 1 | 0.62% |
| Jiri Slaby | 1 | 0.00% | 1 | 0.62% |
| Luis R. Rodriguez | 1 | 0.00% | 1 | 0.62% |
| Rashika Kheria | 1 | 0.00% | 1 | 0.62% |
| Gustavo A. R. Silva | 1 | 0.00% | 1 | 0.62% |
| ye xingchen | 1 | 0.00% | 1 | 0.62% |
| Linus Torvalds | 1 | 0.00% | 1 | 0.62% |
| Sherry Yang | 1 | 0.00% | 1 | 0.62% |
| Masanari Iida | 1 | 0.00% | 1 | 0.62% |
| Total | 25092 | 160 |
/******************************************************************* * This file is part of the Emulex Linux Device Driver for * * Fibre Channel Host Bus Adapters. * * Copyright (C) 2017-2024 Broadcom. All Rights Reserved. The term * * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * * Copyright (C) 2009-2015 Emulex. All rights reserved. * * EMULEX and SLI are trademarks of Emulex. * * www.broadcom.com * * * * This program is free software; you can redistribute it and/or * * modify it under the terms of version 2 of the GNU General * * Public License as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful. * * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * * TO BE LEGALLY INVALID. See the GNU General Public License for * * more details, a copy of which can be found in the file COPYING * * included with this package. * *******************************************************************/ #include <linux/interrupt.h> #include <linux/mempool.h> #include <linux/pci.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/list.h> #include <linux/bsg-lib.h> #include <linux/vmalloc.h> #include <scsi/scsi.h> #include <scsi/scsi_host.h> #include <scsi/scsi_transport_fc.h> #include <scsi/scsi_bsg_fc.h> #include <scsi/fc/fc_fs.h> #include "lpfc_hw4.h" #include "lpfc_hw.h" #include "lpfc_sli.h" #include "lpfc_sli4.h" #include "lpfc_nl.h" #include "lpfc_bsg.h" #include "lpfc_disc.h" #include "lpfc_scsi.h" #include "lpfc.h" #include "lpfc_logmsg.h" #include "lpfc_crtn.h" #include "lpfc_debugfs.h" #include "lpfc_vport.h" #include "lpfc_version.h" struct lpfc_bsg_event { struct list_head node; struct kref kref; wait_queue_head_t wq; /* Event type and waiter identifiers */ uint32_t type_mask; uint32_t req_id; uint32_t reg_id; /* next two flags are here for the auto-delete logic */ unsigned long wait_time_stamp; int waiting; /* seen and not seen events */ struct list_head events_to_get; struct list_head events_to_see; /* driver data associated with the job */ void *dd_data; }; struct lpfc_bsg_iocb { struct lpfc_iocbq *cmdiocbq; struct lpfc_dmabuf *rmp; struct lpfc_nodelist *ndlp; }; struct lpfc_bsg_mbox { LPFC_MBOXQ_t *pmboxq; MAILBOX_t *mb; struct lpfc_dmabuf *dmabuffers; /* for BIU diags */ uint8_t *ext; /* extended mailbox data */ uint32_t mbOffset; /* from app */ uint32_t inExtWLen; /* from app */ uint32_t outExtWLen; /* from app */ }; #define TYPE_EVT 1 #define TYPE_IOCB 2 #define TYPE_MBOX 3 struct bsg_job_data { uint32_t type; struct bsg_job *set_job; /* job waiting for this iocb to finish */ union { struct lpfc_bsg_event *evt; struct lpfc_bsg_iocb iocb; struct lpfc_bsg_mbox mbox; } context_un; }; struct event_data { struct list_head node; uint32_t type; uint32_t immed_dat; void *data; uint32_t len; }; #define BUF_SZ_4K 4096 #define SLI_CT_ELX_LOOPBACK 0x10 enum ELX_LOOPBACK_CMD { ELX_LOOPBACK_XRI_SETUP, ELX_LOOPBACK_DATA, }; #define ELX_LOOPBACK_HEADER_SZ \ (size_t)(&((struct lpfc_sli_ct_request *)NULL)->un) struct lpfc_dmabufext { struct lpfc_dmabuf dma; uint32_t size; uint32_t flag; }; static void lpfc_free_bsg_buffers(struct lpfc_hba *phba, struct lpfc_dmabuf *mlist) { struct lpfc_dmabuf *mlast, *next_mlast; if (mlist) { list_for_each_entry_safe(mlast, next_mlast, &mlist->list, list) { list_del(&mlast->list); lpfc_mbuf_free(phba, mlast->virt, mlast->phys); kfree(mlast); } lpfc_mbuf_free(phba, mlist->virt, mlist->phys); kfree(mlist); } return; } static struct lpfc_dmabuf * lpfc_alloc_bsg_buffers(struct lpfc_hba *phba, unsigned int size, int outbound_buffers, struct ulp_bde64 *bpl, int *bpl_entries) { struct lpfc_dmabuf *mlist = NULL; struct lpfc_dmabuf *mp; unsigned int bytes_left = size; /* Verify we can support the size specified */ if (!size || (size > (*bpl_entries * LPFC_BPL_SIZE))) return NULL; /* Determine the number of dma buffers to allocate */ *bpl_entries = (size % LPFC_BPL_SIZE ? size/LPFC_BPL_SIZE + 1 : size/LPFC_BPL_SIZE); /* Allocate dma buffer and place in BPL passed */ while (bytes_left) { /* Allocate dma buffer */ mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (!mp) { if (mlist) lpfc_free_bsg_buffers(phba, mlist); return NULL; } INIT_LIST_HEAD(&mp->list); mp->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &(mp->phys)); if (!mp->virt) { kfree(mp); if (mlist) lpfc_free_bsg_buffers(phba, mlist); return NULL; } /* Queue it to a linked list */ if (!mlist) mlist = mp; else list_add_tail(&mp->list, &mlist->list); /* Add buffer to buffer pointer list */ if (outbound_buffers) bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; else bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; bpl->addrLow = le32_to_cpu(putPaddrLow(mp->phys)); bpl->addrHigh = le32_to_cpu(putPaddrHigh(mp->phys)); bpl->tus.f.bdeSize = (uint16_t) (bytes_left >= LPFC_BPL_SIZE ? LPFC_BPL_SIZE : bytes_left); bytes_left -= bpl->tus.f.bdeSize; bpl->tus.w = le32_to_cpu(bpl->tus.w); bpl++; } return mlist; } static unsigned int lpfc_bsg_copy_data(struct lpfc_dmabuf *dma_buffers, struct bsg_buffer *bsg_buffers, unsigned int bytes_to_transfer, int to_buffers) { struct lpfc_dmabuf *mp; unsigned int transfer_bytes, bytes_copied = 0; unsigned int sg_offset, dma_offset; unsigned char *dma_address, *sg_address; LIST_HEAD(temp_list); struct sg_mapping_iter miter; unsigned long flags; unsigned int sg_flags = SG_MITER_ATOMIC; bool sg_valid; list_splice_init(&dma_buffers->list, &temp_list); list_add(&dma_buffers->list, &temp_list); sg_offset = 0; if (to_buffers) sg_flags |= SG_MITER_FROM_SG; else sg_flags |= SG_MITER_TO_SG; sg_miter_start(&miter, bsg_buffers->sg_list, bsg_buffers->sg_cnt, sg_flags); local_irq_save(flags); sg_valid = sg_miter_next(&miter); list_for_each_entry(mp, &temp_list, list) { dma_offset = 0; while (bytes_to_transfer && sg_valid && (dma_offset < LPFC_BPL_SIZE)) { dma_address = mp->virt + dma_offset; if (sg_offset) { /* Continue previous partial transfer of sg */ sg_address = miter.addr + sg_offset; transfer_bytes = miter.length - sg_offset; } else { sg_address = miter.addr; transfer_bytes = miter.length; } if (bytes_to_transfer < transfer_bytes) transfer_bytes = bytes_to_transfer; if (transfer_bytes > (LPFC_BPL_SIZE - dma_offset)) transfer_bytes = LPFC_BPL_SIZE - dma_offset; if (to_buffers) memcpy(dma_address, sg_address, transfer_bytes); else memcpy(sg_address, dma_address, transfer_bytes); dma_offset += transfer_bytes; sg_offset += transfer_bytes; bytes_to_transfer -= transfer_bytes; bytes_copied += transfer_bytes; if (sg_offset >= miter.length) { sg_offset = 0; sg_valid = sg_miter_next(&miter); } } } sg_miter_stop(&miter); local_irq_restore(flags); list_del_init(&dma_buffers->list); list_splice(&temp_list, &dma_buffers->list); return bytes_copied; } /** * lpfc_bsg_send_mgmt_cmd_cmp - lpfc_bsg_send_mgmt_cmd's completion handler * @phba: Pointer to HBA context object. * @cmdiocbq: Pointer to command iocb. * @rspiocbq: Pointer to response iocb. * * This function is the completion handler for iocbs issued using * lpfc_bsg_send_mgmt_cmd function. This function is called by the * ring event handler function without any lock held. This function * can be called from both worker thread context and interrupt * context. This function also can be called from another thread which * cleans up the SLI layer objects. * This function copies the contents of the response iocb to the * response iocb memory object provided by the caller of * lpfc_sli_issue_iocb_wait and then wakes up the thread which * sleeps for the iocb completion. **/ static void lpfc_bsg_send_mgmt_cmd_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocbq, struct lpfc_iocbq *rspiocbq) { struct bsg_job_data *dd_data; struct bsg_job *job; struct fc_bsg_reply *bsg_reply; struct lpfc_dmabuf *bmp, *cmp, *rmp; struct lpfc_nodelist *ndlp; struct lpfc_bsg_iocb *iocb; unsigned long flags; int rc = 0; u32 ulp_status, ulp_word4, total_data_placed; dd_data = cmdiocbq->context_un.dd_data; /* Determine if job has been aborted */ spin_lock_irqsave(&phba->ct_ev_lock, flags); job = dd_data->set_job; if (job) { bsg_reply = job->reply; /* Prevent timeout handling from trying to abort job */ job->dd_data = NULL; } spin_unlock_irqrestore(&phba->ct_ev_lock, flags); /* Close the timeout handler abort window */ spin_lock_irqsave(&phba->hbalock, flags); cmdiocbq->cmd_flag &= ~LPFC_IO_CMD_OUTSTANDING; spin_unlock_irqrestore(&phba->hbalock, flags); iocb = &dd_data->context_un.iocb; ndlp = iocb->cmdiocbq->ndlp; rmp = iocb->rmp; cmp = cmdiocbq->cmd_dmabuf; bmp = cmdiocbq->bpl_dmabuf; ulp_status = get_job_ulpstatus(phba, rspiocbq); ulp_word4 = get_job_word4(phba, rspiocbq); total_data_placed = get_job_data_placed(phba, rspiocbq); /* Copy the completed data or set the error status */ if (job) { if (ulp_status) { if (ulp_status == IOSTAT_LOCAL_REJECT) { switch (ulp_word4 & IOERR_PARAM_MASK) { case IOERR_SEQUENCE_TIMEOUT: rc = -ETIMEDOUT; break; case IOERR_INVALID_RPI: rc = -EFAULT; break; default: rc = -EACCES; break; } } else { rc = -EACCES; } } else { bsg_reply->reply_payload_rcv_len = lpfc_bsg_copy_data(rmp, &job->reply_payload, total_data_placed, 0); } } lpfc_free_bsg_buffers(phba, cmp); lpfc_free_bsg_buffers(phba, rmp); lpfc_mbuf_free(phba, bmp->virt, bmp->phys); kfree(bmp); lpfc_nlp_put(ndlp); lpfc_sli_release_iocbq(phba, cmdiocbq); kfree(dd_data); /* Complete the job if the job is still active */ if (job) { bsg_reply->result = rc; bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); } return; } /** * lpfc_bsg_send_mgmt_cmd - send a CT command from a bsg request * @job: fc_bsg_job to handle **/ static int lpfc_bsg_send_mgmt_cmd(struct bsg_job *job) { struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job)); struct lpfc_rport_data *rdata = fc_bsg_to_rport(job)->dd_data; struct lpfc_hba *phba = vport->phba; struct lpfc_nodelist *ndlp = rdata->pnode; struct fc_bsg_reply *bsg_reply = job->reply; struct ulp_bde64 *bpl = NULL; struct lpfc_iocbq *cmdiocbq = NULL; struct lpfc_dmabuf *bmp = NULL, *cmp = NULL, *rmp = NULL; int request_nseg, reply_nseg; u32 num_entry; struct bsg_job_data *dd_data; unsigned long flags; uint32_t creg_val; int rc = 0; int iocb_stat; u16 ulp_context; /* in case no data is transferred */ bsg_reply->reply_payload_rcv_len = 0; if (ndlp->nlp_flag & NLP_ELS_SND_MASK) return -ENODEV; /* allocate our bsg tracking structure */ dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); if (!dd_data) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2733 Failed allocation of dd_data\n"); rc = -ENOMEM; goto no_dd_data; } cmdiocbq = lpfc_sli_get_iocbq(phba); if (!cmdiocbq) { rc = -ENOMEM; goto free_dd; } bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (!bmp) { rc = -ENOMEM; goto free_cmdiocbq; } bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys); if (!bmp->virt) { rc = -ENOMEM; goto free_bmp; } INIT_LIST_HEAD(&bmp->list); bpl = (struct ulp_bde64 *) bmp->virt; request_nseg = LPFC_BPL_SIZE/sizeof(struct ulp_bde64); cmp = lpfc_alloc_bsg_buffers(phba, job->request_payload.payload_len, 1, bpl, &request_nseg); if (!cmp) { rc = -ENOMEM; goto free_bmp; } lpfc_bsg_copy_data(cmp, &job->request_payload, job->request_payload.payload_len, 1); bpl += request_nseg; reply_nseg = LPFC_BPL_SIZE/sizeof(struct ulp_bde64) - request_nseg; rmp = lpfc_alloc_bsg_buffers(phba, job->reply_payload.payload_len, 0, bpl, &reply_nseg); if (!rmp) { rc = -ENOMEM; goto free_cmp; } num_entry = request_nseg + reply_nseg; if (phba->sli_rev == LPFC_SLI_REV4) ulp_context = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; else ulp_context = ndlp->nlp_rpi; lpfc_sli_prep_gen_req(phba, cmdiocbq, bmp, ulp_context, num_entry, phba->fc_ratov * 2); cmdiocbq->num_bdes = num_entry; cmdiocbq->vport = phba->pport; cmdiocbq->cmd_dmabuf = cmp; cmdiocbq->bpl_dmabuf = bmp; cmdiocbq->cmd_flag |= LPFC_IO_LIBDFC; cmdiocbq->cmd_cmpl = lpfc_bsg_send_mgmt_cmd_cmp; cmdiocbq->context_un.dd_data = dd_data; dd_data->type = TYPE_IOCB; dd_data->set_job = job; dd_data->context_un.iocb.cmdiocbq = cmdiocbq; dd_data->context_un.iocb.rmp = rmp; job->dd_data = dd_data; if (phba->cfg_poll & DISABLE_FCP_RING_INT) { if (lpfc_readl(phba->HCregaddr, &creg_val)) { rc = -EIO ; goto free_rmp; } creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING); writel(creg_val, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ } cmdiocbq->ndlp = lpfc_nlp_get(ndlp); if (!cmdiocbq->ndlp) { rc = -ENODEV; goto free_rmp; } iocb_stat = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0); if (iocb_stat == IOCB_SUCCESS) { spin_lock_irqsave(&phba->hbalock, flags); /* make sure the I/O had not been completed yet */ if (cmdiocbq->cmd_flag & LPFC_IO_LIBDFC) { /* open up abort window to timeout handler */ cmdiocbq->cmd_flag |= LPFC_IO_CMD_OUTSTANDING; } spin_unlock_irqrestore(&phba->hbalock, flags); return 0; /* done for now */ } else if (iocb_stat == IOCB_BUSY) { rc = -EAGAIN; } else { rc = -EIO; } /* iocb failed so cleanup */ lpfc_nlp_put(ndlp); free_rmp: lpfc_free_bsg_buffers(phba, rmp); free_cmp: lpfc_free_bsg_buffers(phba, cmp); free_bmp: if (bmp->virt) lpfc_mbuf_free(phba, bmp->virt, bmp->phys); kfree(bmp); free_cmdiocbq: lpfc_sli_release_iocbq(phba, cmdiocbq); free_dd: kfree(dd_data); no_dd_data: /* make error code available to userspace */ bsg_reply->result = rc; job->dd_data = NULL; return rc; } /** * lpfc_bsg_rport_els_cmp - lpfc_bsg_rport_els's completion handler * @phba: Pointer to HBA context object. * @cmdiocbq: Pointer to command iocb. * @rspiocbq: Pointer to response iocb. * * This function is the completion handler for iocbs issued using * lpfc_bsg_rport_els_cmp function. This function is called by the * ring event handler function without any lock held. This function * can be called from both worker thread context and interrupt * context. This function also can be called from other thread which * cleans up the SLI layer objects. * This function copies the contents of the response iocb to the * response iocb memory object provided by the caller of * lpfc_sli_issue_iocb_wait and then wakes up the thread which * sleeps for the iocb completion. **/ static void lpfc_bsg_rport_els_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocbq, struct lpfc_iocbq *rspiocbq) { struct bsg_job_data *dd_data; struct bsg_job *job; struct fc_bsg_reply *bsg_reply; struct lpfc_nodelist *ndlp; struct lpfc_dmabuf *pcmd = NULL, *prsp = NULL; struct fc_bsg_ctels_reply *els_reply; uint8_t *rjt_data; unsigned long flags; unsigned int rsp_size; int rc = 0; u32 ulp_status, ulp_word4, total_data_placed; dd_data = cmdiocbq->context_un.dd_data; ndlp = dd_data->context_un.iocb.ndlp; cmdiocbq->ndlp = ndlp; /* Determine if job has been aborted */ spin_lock_irqsave(&phba->ct_ev_lock, flags); job = dd_data->set_job; if (job) { bsg_reply = job->reply; /* Prevent timeout handling from trying to abort job */ job->dd_data = NULL; } spin_unlock_irqrestore(&phba->ct_ev_lock, flags); /* Close the timeout handler abort window */ spin_lock_irqsave(&phba->hbalock, flags); cmdiocbq->cmd_flag &= ~LPFC_IO_CMD_OUTSTANDING; spin_unlock_irqrestore(&phba->hbalock, flags); ulp_status = get_job_ulpstatus(phba, rspiocbq); ulp_word4 = get_job_word4(phba, rspiocbq); total_data_placed = get_job_data_placed(phba, rspiocbq); pcmd = cmdiocbq->cmd_dmabuf; prsp = (struct lpfc_dmabuf *)pcmd->list.next; /* Copy the completed job data or determine the job status if job is * still active */ if (job) { if (ulp_status == IOSTAT_SUCCESS) { rsp_size = total_data_placed; bsg_reply->reply_payload_rcv_len = sg_copy_from_buffer(job->reply_payload.sg_list, job->reply_payload.sg_cnt, prsp->virt, rsp_size); } else if (ulp_status == IOSTAT_LS_RJT) { bsg_reply->reply_payload_rcv_len = sizeof(struct fc_bsg_ctels_reply); /* LS_RJT data returned in word 4 */ rjt_data = (uint8_t *)&ulp_word4; els_reply = &bsg_reply->reply_data.ctels_reply; els_reply->status = FC_CTELS_STATUS_REJECT; els_reply->rjt_data.action = rjt_data[3]; els_reply->rjt_data.reason_code = rjt_data[2]; els_reply->rjt_data.reason_explanation = rjt_data[1]; els_reply->rjt_data.vendor_unique = rjt_data[0]; } else if (ulp_status == IOSTAT_LOCAL_REJECT && (ulp_word4 & IOERR_PARAM_MASK) == IOERR_SEQUENCE_TIMEOUT) { rc = -ETIMEDOUT; } else { rc = -EIO; } } lpfc_els_free_iocb(phba, cmdiocbq); lpfc_nlp_put(ndlp); kfree(dd_data); /* Complete the job if the job is still active */ if (job) { bsg_reply->result = rc; bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); } return; } /** * lpfc_bsg_rport_els - send an ELS command from a bsg request * @job: fc_bsg_job to handle **/ static int lpfc_bsg_rport_els(struct bsg_job *job) { struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job)); struct lpfc_hba *phba = vport->phba; struct lpfc_rport_data *rdata = fc_bsg_to_rport(job)->dd_data; struct lpfc_nodelist *ndlp = rdata->pnode; struct fc_bsg_request *bsg_request = job->request; struct fc_bsg_reply *bsg_reply = job->reply; uint32_t elscmd; uint32_t cmdsize; struct lpfc_iocbq *cmdiocbq; uint16_t rpi = 0; struct bsg_job_data *dd_data; unsigned long flags; uint32_t creg_val; int rc = 0; /* in case no data is transferred */ bsg_reply->reply_payload_rcv_len = 0; /* verify the els command is not greater than the * maximum ELS transfer size. */ if (job->request_payload.payload_len > FCELSSIZE) { rc = -EINVAL; goto no_dd_data; } /* allocate our bsg tracking structure */ dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); if (!dd_data) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2735 Failed allocation of dd_data\n"); rc = -ENOMEM; goto no_dd_data; } elscmd = bsg_request->rqst_data.r_els.els_code; cmdsize = job->request_payload.payload_len; if (!lpfc_nlp_get(ndlp)) { rc = -ENODEV; goto free_dd_data; } /* We will use the allocated dma buffers by prep els iocb for command * and response to ensure if the job times out and the request is freed, * we won't be dma into memory that is no longer allocated to for the * request. */ cmdiocbq = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID, elscmd); if (!cmdiocbq) { rc = -EIO; goto release_ndlp; } /* Transfer the request payload to allocated command dma buffer */ sg_copy_to_buffer(job->request_payload.sg_list, job->request_payload.sg_cnt, cmdiocbq->cmd_dmabuf->virt, cmdsize); rpi = ndlp->nlp_rpi; if (phba->sli_rev == LPFC_SLI_REV4) bf_set(wqe_ctxt_tag, &cmdiocbq->wqe.generic.wqe_com, phba->sli4_hba.rpi_ids[rpi]); else cmdiocbq->iocb.ulpContext = rpi; cmdiocbq->cmd_flag |= LPFC_IO_LIBDFC; cmdiocbq->context_un.dd_data = dd_data; cmdiocbq->ndlp = ndlp; cmdiocbq->cmd_cmpl = lpfc_bsg_rport_els_cmp; dd_data->type = TYPE_IOCB; dd_data->set_job = job; dd_data->context_un.iocb.cmdiocbq = cmdiocbq; dd_data->context_un.iocb.ndlp = ndlp; dd_data->context_un.iocb.rmp = NULL; job->dd_data = dd_data; if (phba->cfg_poll & DISABLE_FCP_RING_INT) { if (lpfc_readl(phba->HCregaddr, &creg_val)) { rc = -EIO; goto linkdown_err; } creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING); writel(creg_val, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0); if (rc == IOCB_SUCCESS) { spin_lock_irqsave(&phba->hbalock, flags); /* make sure the I/O had not been completed/released */ if (cmdiocbq->cmd_flag & LPFC_IO_LIBDFC) { /* open up abort window to timeout handler */ cmdiocbq->cmd_flag |= LPFC_IO_CMD_OUTSTANDING; } spin_unlock_irqrestore(&phba->hbalock, flags); return 0; /* done for now */ } else if (rc == IOCB_BUSY) { rc = -EAGAIN; } else { rc = -EIO; } /* I/O issue failed. Cleanup resources. */ linkdown_err: lpfc_els_free_iocb(phba, cmdiocbq); release_ndlp: lpfc_nlp_put(ndlp); free_dd_data: kfree(dd_data); no_dd_data: /* make error code available to userspace */ bsg_reply->result = rc; job->dd_data = NULL; return rc; } /** * lpfc_bsg_event_free - frees an allocated event structure * @kref: Pointer to a kref. * * Called from kref_put. Back cast the kref into an event structure address. * Free any events to get, delete associated nodes, free any events to see, * free any data then free the event itself. **/ static void lpfc_bsg_event_free(struct kref *kref) { struct lpfc_bsg_event *evt = container_of(kref, struct lpfc_bsg_event, kref); struct event_data *ed; list_del(&evt->node); while (!list_empty(&evt->events_to_get)) { ed = list_entry(evt->events_to_get.next, typeof(*ed), node); list_del(&ed->node); kfree(ed->data); kfree(ed); } while (!list_empty(&evt->events_to_see)) { ed = list_entry(evt->events_to_see.next, typeof(*ed), node); list_del(&ed->node); kfree(ed->data); kfree(ed); } kfree(evt->dd_data); kfree(evt); } /** * lpfc_bsg_event_ref - increments the kref for an event * @evt: Pointer to an event structure. **/ static inline void lpfc_bsg_event_ref(struct lpfc_bsg_event *evt) { kref_get(&evt->kref); } /** * lpfc_bsg_event_unref - Uses kref_put to free an event structure * @evt: Pointer to an event structure. **/ static inline void lpfc_bsg_event_unref(struct lpfc_bsg_event *evt) { kref_put(&evt->kref, lpfc_bsg_event_free); } /** * lpfc_bsg_event_new - allocate and initialize a event structure * @ev_mask: Mask of events. * @ev_reg_id: Event reg id. * @ev_req_id: Event request id. **/ static struct lpfc_bsg_event * lpfc_bsg_event_new(uint32_t ev_mask, int ev_reg_id, uint32_t ev_req_id) { struct lpfc_bsg_event *evt = kzalloc(sizeof(*evt), GFP_KERNEL); if (!evt) return NULL; INIT_LIST_HEAD(&evt->events_to_get); INIT_LIST_HEAD(&evt->events_to_see); evt->type_mask = ev_mask; evt->req_id = ev_req_id; evt->reg_id = ev_reg_id; evt->wait_time_stamp = jiffies; evt->dd_data = NULL; init_waitqueue_head(&evt->wq); kref_init(&evt->kref); return evt; } /** * diag_cmd_data_free - Frees an lpfc dma buffer extension * @phba: Pointer to HBA context object. * @mlist: Pointer to an lpfc dma buffer extension. **/ static int diag_cmd_data_free(struct lpfc_hba *phba, struct lpfc_dmabufext *mlist) { struct lpfc_dmabufext *mlast; struct pci_dev *pcidev; struct list_head head, *curr, *next; if ((!mlist) || (!lpfc_is_link_up(phba) && (phba->link_flag & LS_LOOPBACK_MODE))) { return 0; } pcidev = phba->pcidev; list_add_tail(&head, &mlist->dma.list); list_for_each_safe(curr, next, &head) { mlast = list_entry(curr, struct lpfc_dmabufext , dma.list); if (mlast->dma.virt) dma_free_coherent(&pcidev->dev, mlast->size, mlast->dma.virt, mlast->dma.phys); kfree(mlast); } return 0; } /* * lpfc_bsg_ct_unsol_event - process an unsolicited CT command * * This function is called when an unsolicited CT command is received. It * forwards the event to any processes registered to receive CT events. **/ int lpfc_bsg_ct_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_iocbq *piocbq) { uint32_t evt_req_id = 0; u16 cmd; struct lpfc_dmabuf *dmabuf = NULL; struct lpfc_bsg_event *evt; struct event_data *evt_dat = NULL; struct lpfc_iocbq *iocbq; IOCB_t *iocb = NULL; size_t offset = 0; struct list_head head; struct ulp_bde64 *bde; dma_addr_t dma_addr; int i; struct lpfc_dmabuf *bdeBuf1 = piocbq->cmd_dmabuf; struct lpfc_dmabuf *bdeBuf2 = piocbq->bpl_dmabuf; struct lpfc_sli_ct_request *ct_req; struct bsg_job *job = NULL; struct fc_bsg_reply *bsg_reply; struct bsg_job_data *dd_data = NULL; unsigned long flags; int size = 0; u32 bde_count = 0; INIT_LIST_HEAD(&head); list_add_tail(&head, &piocbq->list); ct_req = (struct lpfc_sli_ct_request *)bdeBuf1->virt; evt_req_id = ct_req->FsType; cmd = be16_to_cpu(ct_req->CommandResponse.bits.CmdRsp); spin_lock_irqsave(&phba->ct_ev_lock, flags); list_for_each_entry(evt, &phba->ct_ev_waiters, node) { if (!(evt->type_mask & FC_REG_CT_EVENT) || evt->req_id != evt_req_id) continue; lpfc_bsg_event_ref(evt); spin_unlock_irqrestore(&phba->ct_ev_lock, flags); evt_dat = kzalloc(sizeof(*evt_dat), GFP_KERNEL); if (evt_dat == NULL) { spin_lock_irqsave(&phba->ct_ev_lock, flags); lpfc_bsg_event_unref(evt); lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2614 Memory allocation failed for " "CT event\n"); break; } if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { /* take accumulated byte count from the last iocbq */ iocbq = list_entry(head.prev, typeof(*iocbq), list); if (phba->sli_rev == LPFC_SLI_REV4) evt_dat->len = iocbq->wcqe_cmpl.total_data_placed; else evt_dat->len = iocbq->iocb.unsli3.rcvsli3.acc_len; } else { list_for_each_entry(iocbq, &head, list) { iocb = &iocbq->iocb; for (i = 0; i < iocb->ulpBdeCount; i++) evt_dat->len += iocb->un.cont64[i].tus.f.bdeSize; } } evt_dat->data = kzalloc(evt_dat->len, GFP_KERNEL); if (evt_dat->data == NULL) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2615 Memory allocation failed for " "CT event data, size %d\n", evt_dat->len); kfree(evt_dat); spin_lock_irqsave(&phba->ct_ev_lock, flags); lpfc_bsg_event_unref(evt); spin_unlock_irqrestore(&phba->ct_ev_lock, flags); goto error_ct_unsol_exit; } list_for_each_entry(iocbq, &head, list) { size = 0; if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { bdeBuf1 = iocbq->cmd_dmabuf; bdeBuf2 = iocbq->bpl_dmabuf; } if (phba->sli_rev == LPFC_SLI_REV4) bde_count = iocbq->wcqe_cmpl.word3; else bde_count = iocbq->iocb.ulpBdeCount; for (i = 0; i < bde_count; i++) { if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { if (i == 0) { size = iocbq->wqe.gen_req.bde.tus.f.bdeSize; dmabuf = bdeBuf1; } else if (i == 1) { size = iocbq->unsol_rcv_len; dmabuf = bdeBuf2; } if ((offset + size) > evt_dat->len) size = evt_dat->len - offset; } else { size = iocbq->iocb.un.cont64[i]. tus.f.bdeSize; bde = &iocbq->iocb.un.cont64[i]; dma_addr = getPaddr(bde->addrHigh, bde->addrLow); dmabuf = lpfc_sli_ringpostbuf_get(phba, pring, dma_addr); } if (!dmabuf) { lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "2616 No dmabuf " "found for iocbq x%px\n", iocbq); kfree(evt_dat->data); kfree(evt_dat); spin_lock_irqsave(&phba->ct_ev_lock, flags); lpfc_bsg_event_unref(evt); spin_unlock_irqrestore( &phba->ct_ev_lock, flags); goto error_ct_unsol_exit; } memcpy((char *)(evt_dat->data) + offset, dmabuf->virt, size); offset += size; if (evt_req_id != SLI_CT_ELX_LOOPBACK && !(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) { lpfc_sli_ringpostbuf_put(phba, pring, dmabuf); } else { switch (cmd) { case ELX_LOOPBACK_DATA: if (phba->sli_rev < LPFC_SLI_REV4) diag_cmd_data_free(phba, (struct lpfc_dmabufext *)dmabuf); break; case ELX_LOOPBACK_XRI_SETUP: if ((phba->sli_rev == LPFC_SLI_REV2) || (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED )) { lpfc_in_buf_free(phba, dmabuf); } else { lpfc_sli3_post_buffer(phba, pring, 1); } break; default: if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) lpfc_sli3_post_buffer(phba, pring, 1); break; } } } } spin_lock_irqsave(&phba->ct_ev_lock, flags); if (phba->sli_rev == LPFC_SLI_REV4) { evt_dat->immed_dat = phba->ctx_idx; phba->ctx_idx = (phba->ctx_idx + 1) % LPFC_CT_CTX_MAX; /* Provide warning for over-run of the ct_ctx array */ if (phba->ct_ctx[evt_dat->immed_dat].valid == UNSOL_VALID) lpfc_printf_log(phba, KERN_WARNING, LOG_ELS, "2717 CT context array entry " "[%d] over-run: oxid:x%x, " "sid:x%x\n", phba->ctx_idx, phba->ct_ctx[ evt_dat->immed_dat].oxid, phba->ct_ctx[ evt_dat->immed_dat].SID); phba->ct_ctx[evt_dat->immed_dat].rxid = get_job_ulpcontext(phba, piocbq); phba->ct_ctx[evt_dat->immed_dat].oxid = get_job_rcvoxid(phba, piocbq); phba->ct_ctx[evt_dat->immed_dat].SID = bf_get(wqe_els_did, &piocbq->wqe.xmit_els_rsp.wqe_dest); phba->ct_ctx[evt_dat->immed_dat].valid = UNSOL_VALID; } else evt_dat->immed_dat = get_job_ulpcontext(phba, piocbq); evt_dat->type = FC_REG_CT_EVENT; list_add(&evt_dat->node, &evt->events_to_see); if (evt_req_id == SLI_CT_ELX_LOOPBACK) { wake_up_interruptible(&evt->wq); lpfc_bsg_event_unref(evt); break; } list_move(evt->events_to_see.prev, &evt->events_to_get); dd_data = (struct bsg_job_data *)evt->dd_data; job = dd_data->set_job; dd_data->set_job = NULL; lpfc_bsg_event_unref(evt); if (job) { bsg_reply = job->reply; bsg_reply->reply_payload_rcv_len = size; /* make error code available to userspace */ bsg_reply->result = 0; job->dd_data = NULL; /* complete the job back to userspace */ spin_unlock_irqrestore(&phba->ct_ev_lock, flags); bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); spin_lock_irqsave(&phba->ct_ev_lock, flags); } } spin_unlock_irqrestore(&phba->ct_ev_lock, flags); error_ct_unsol_exit: if (!list_empty(&head)) list_del(&head); if ((phba->sli_rev < LPFC_SLI_REV4) && (evt_req_id == SLI_CT_ELX_LOOPBACK)) return 0; return 1; } /** * lpfc_bsg_ct_unsol_abort - handler ct abort to management plane * @phba: Pointer to HBA context object. * @dmabuf: pointer to a dmabuf that describes the FC sequence * * This function handles abort to the CT command toward management plane * for SLI4 port. * * If the pending context of a CT command to management plane present, clears * such context and returns 1 for handled; otherwise, it returns 0 indicating * no context exists. **/ int lpfc_bsg_ct_unsol_abort(struct lpfc_hba *phba, struct hbq_dmabuf *dmabuf) { struct fc_frame_header fc_hdr; struct fc_frame_header *fc_hdr_ptr = &fc_hdr; int ctx_idx, handled = 0; uint16_t oxid, rxid; uint32_t sid; memcpy(fc_hdr_ptr, dmabuf->hbuf.virt, sizeof(struct fc_frame_header)); sid = sli4_sid_from_fc_hdr(fc_hdr_ptr); oxid = be16_to_cpu(fc_hdr_ptr->fh_ox_id); rxid = be16_to_cpu(fc_hdr_ptr->fh_rx_id); for (ctx_idx = 0; ctx_idx < LPFC_CT_CTX_MAX; ctx_idx++) { if (phba->ct_ctx[ctx_idx].valid != UNSOL_VALID) continue; if (phba->ct_ctx[ctx_idx].rxid != rxid) continue; if (phba->ct_ctx[ctx_idx].oxid != oxid) continue; if (phba->ct_ctx[ctx_idx].SID != sid) continue; phba->ct_ctx[ctx_idx].valid = UNSOL_INVALID; handled = 1; } return handled; } /** * lpfc_bsg_hba_set_event - process a SET_EVENT bsg vendor command * @job: SET_EVENT fc_bsg_job **/ static int lpfc_bsg_hba_set_event(struct bsg_job *job) { struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job)); struct lpfc_hba *phba = vport->phba; struct fc_bsg_request *bsg_request = job->request; struct set_ct_event *event_req; struct lpfc_bsg_event *evt; int rc = 0; struct bsg_job_data *dd_data = NULL; uint32_t ev_mask; unsigned long flags; if (job->request_len < sizeof(struct fc_bsg_request) + sizeof(struct set_ct_event)) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2612 Received SET_CT_EVENT below minimum " "size\n"); rc = -EINVAL; goto job_error; } event_req = (struct set_ct_event *) bsg_request->rqst_data.h_vendor.vendor_cmd; ev_mask = ((uint32_t)(unsigned long)event_req->type_mask & FC_REG_EVENT_MASK); spin_lock_irqsave(&phba->ct_ev_lock, flags); list_for_each_entry(evt, &phba->ct_ev_waiters, node) { if (evt->reg_id == event_req->ev_reg_id) { lpfc_bsg_event_ref(evt); evt->wait_time_stamp = jiffies; dd_data = (struct bsg_job_data *)evt->dd_data; break; } } spin_unlock_irqrestore(&phba->ct_ev_lock, flags); if (&evt->node == &phba->ct_ev_waiters) { /* no event waiting struct yet - first call */ dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); if (dd_data == NULL) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2734 Failed allocation of dd_data\n"); rc = -ENOMEM; goto job_error; } evt = lpfc_bsg_event_new(ev_mask, event_req->ev_reg_id, event_req->ev_req_id); if (!evt) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2617 Failed allocation of event " "waiter\n"); rc = -ENOMEM; goto job_error; } dd_data->type = TYPE_EVT; dd_data->set_job = NULL; dd_data->context_un.evt = evt; evt->dd_data = (void *)dd_data; spin_lock_irqsave(&phba->ct_ev_lock, flags); list_add(&evt->node, &phba->ct_ev_waiters); lpfc_bsg_event_ref(evt); evt->wait_time_stamp = jiffies; spin_unlock_irqrestore(&phba->ct_ev_lock, flags); } spin_lock_irqsave(&phba->ct_ev_lock, flags); evt->waiting = 1; dd_data->set_job = job; /* for unsolicited command */ job->dd_data = dd_data; /* for fc transport timeout callback*/ spin_unlock_irqrestore(&phba->ct_ev_lock, flags); return 0; /* call job done later */ job_error: kfree(dd_data); job->dd_data = NULL; return rc; } /** * lpfc_bsg_hba_get_event - process a GET_EVENT bsg vendor command * @job: GET_EVENT fc_bsg_job **/ static int lpfc_bsg_hba_get_event(struct bsg_job *job) { struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job)); struct lpfc_hba *phba = vport->phba; struct fc_bsg_request *bsg_request = job->request; struct fc_bsg_reply *bsg_reply = job->reply; struct get_ct_event *event_req; struct get_ct_event_reply *event_reply; struct lpfc_bsg_event *evt, *evt_next; struct event_data *evt_dat = NULL; unsigned long flags; uint32_t rc = 0; if (job->request_len < sizeof(struct fc_bsg_request) + sizeof(struct get_ct_event)) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2613 Received GET_CT_EVENT request below " "minimum size\n"); rc = -EINVAL; goto job_error; } event_req = (struct get_ct_event *) bsg_request->rqst_data.h_vendor.vendor_cmd; event_reply = (struct get_ct_event_reply *) bsg_reply->reply_data.vendor_reply.vendor_rsp; spin_lock_irqsave(&phba->ct_ev_lock, flags); list_for_each_entry_safe(evt, evt_next, &phba->ct_ev_waiters, node) { if (evt->reg_id == event_req->ev_reg_id) { if (list_empty(&evt->events_to_get)) break; lpfc_bsg_event_ref(evt); evt->wait_time_stamp = jiffies; evt_dat = list_entry(evt->events_to_get.prev, struct event_data, node); list_del(&evt_dat->node); break; } } spin_unlock_irqrestore(&phba->ct_ev_lock, flags); /* The app may continue to ask for event data until it gets * an error indicating that there isn't anymore */ if (evt_dat == NULL) { bsg_reply->reply_payload_rcv_len = 0; rc = -ENOENT; goto job_error; } if (evt_dat->len > job->request_payload.payload_len) { evt_dat->len = job->request_payload.payload_len; lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2618 Truncated event data at %d " "bytes\n", job->request_payload.payload_len); } event_reply->type = evt_dat->type; event_reply->immed_data = evt_dat->immed_dat; if (evt_dat->len > 0) bsg_reply->reply_payload_rcv_len = sg_copy_from_buffer(job->request_payload.sg_list, job->request_payload.sg_cnt, evt_dat->data, evt_dat->len); else bsg_reply->reply_payload_rcv_len = 0; if (evt_dat) { kfree(evt_dat->data); kfree(evt_dat); } spin_lock_irqsave(&phba->ct_ev_lock, flags); lpfc_bsg_event_unref(evt); spin_unlock_irqrestore(&phba->ct_ev_lock, flags); job->dd_data = NULL; bsg_reply->result = 0; bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); return 0; job_error: job->dd_data = NULL; bsg_reply->result = rc; return rc; } /** * lpfc_issue_ct_rsp_cmp - lpfc_issue_ct_rsp's completion handler * @phba: Pointer to HBA context object. * @cmdiocbq: Pointer to command iocb. * @rspiocbq: Pointer to response iocb. * * This function is the completion handler for iocbs issued using * lpfc_issue_ct_rsp_cmp function. This function is called by the * ring event handler function without any lock held. This function * can be called from both worker thread context and interrupt * context. This function also can be called from other thread which * cleans up the SLI layer objects. * This function copy the contents of the response iocb to the * response iocb memory object provided by the caller of * lpfc_sli_issue_iocb_wait and then wakes up the thread which * sleeps for the iocb completion. **/ static void lpfc_issue_ct_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocbq, struct lpfc_iocbq *rspiocbq) { struct bsg_job_data *dd_data; struct bsg_job *job; struct fc_bsg_reply *bsg_reply; struct lpfc_dmabuf *bmp, *cmp; struct lpfc_nodelist *ndlp; unsigned long flags; int rc = 0; u32 ulp_status, ulp_word4; dd_data = cmdiocbq->context_un.dd_data; /* Determine if job has been aborted */ spin_lock_irqsave(&phba->ct_ev_lock, flags); job = dd_data->set_job; if (job) { /* Prevent timeout handling from trying to abort job */ job->dd_data = NULL; } spin_unlock_irqrestore(&phba->ct_ev_lock, flags); /* Close the timeout handler abort window */ spin_lock_irqsave(&phba->hbalock, flags); cmdiocbq->cmd_flag &= ~LPFC_IO_CMD_OUTSTANDING; spin_unlock_irqrestore(&phba->hbalock, flags); ndlp = dd_data->context_un.iocb.ndlp; cmp = cmdiocbq->cmd_dmabuf; bmp = cmdiocbq->bpl_dmabuf; ulp_status = get_job_ulpstatus(phba, rspiocbq); ulp_word4 = get_job_word4(phba, rspiocbq); /* Copy the completed job data or set the error status */ if (job) { bsg_reply = job->reply; if (ulp_status) { if (ulp_status == IOSTAT_LOCAL_REJECT) { switch (ulp_word4 & IOERR_PARAM_MASK) { case IOERR_SEQUENCE_TIMEOUT: rc = -ETIMEDOUT; break; case IOERR_INVALID_RPI: rc = -EFAULT; break; default: rc = -EACCES; break; } } else { rc = -EACCES; } } else { bsg_reply->reply_payload_rcv_len = 0; } } lpfc_free_bsg_buffers(phba, cmp); lpfc_mbuf_free(phba, bmp->virt, bmp->phys); kfree(bmp); lpfc_sli_release_iocbq(phba, cmdiocbq); lpfc_nlp_put(ndlp); kfree(dd_data); /* Complete the job if the job is still active */ if (job) { bsg_reply->result = rc; bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); } return; } /** * lpfc_issue_ct_rsp - issue a ct response * @phba: Pointer to HBA context object. * @job: Pointer to the job object. * @tag: tag index value into the ports context exchange array. * @cmp: Pointer to a cmp dma buffer descriptor. * @bmp: Pointer to a bmp dma buffer descriptor. * @num_entry: Number of enties in the bde. **/ static int lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct bsg_job *job, uint32_t tag, struct lpfc_dmabuf *cmp, struct lpfc_dmabuf *bmp, int num_entry) { struct lpfc_iocbq *ctiocb = NULL; int rc = 0; struct lpfc_nodelist *ndlp = NULL; struct bsg_job_data *dd_data; unsigned long flags; uint32_t creg_val; u16 ulp_context, iotag; ndlp = lpfc_findnode_did(phba->pport, phba->ct_ctx[tag].SID); if (!ndlp) { lpfc_printf_log(phba, KERN_WARNING, LOG_ELS, "2721 ndlp null for oxid %x SID %x\n", phba->ct_ctx[tag].rxid, phba->ct_ctx[tag].SID); return IOCB_ERROR; } /* allocate our bsg tracking structure */ dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); if (!dd_data) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2736 Failed allocation of dd_data\n"); rc = -ENOMEM; goto no_dd_data; } /* Allocate buffer for command iocb */ ctiocb = lpfc_sli_get_iocbq(phba); if (!ctiocb) { rc = -ENOMEM; goto no_ctiocb; } if (phba->sli_rev == LPFC_SLI_REV4) { /* Do not issue unsol response if oxid not marked as valid */ if (phba->ct_ctx[tag].valid != UNSOL_VALID) { rc = IOCB_ERROR; goto issue_ct_rsp_exit; } lpfc_sli_prep_xmit_seq64(phba, ctiocb, bmp, phba->sli4_hba.rpi_ids[ndlp->nlp_rpi], phba->ct_ctx[tag].oxid, num_entry, FC_RCTL_DD_SOL_CTL, 1, CMD_XMIT_SEQUENCE64_WQE); /* The exchange is done, mark the entry as invalid */ phba->ct_ctx[tag].valid = UNSOL_INVALID; iotag = get_wqe_reqtag(ctiocb); } else { lpfc_sli_prep_xmit_seq64(phba, ctiocb, bmp, 0, tag, num_entry, FC_RCTL_DD_SOL_CTL, 1, CMD_XMIT_SEQUENCE64_CX); ctiocb->num_bdes = num_entry; iotag = ctiocb->iocb.ulpIoTag; } ulp_context = get_job_ulpcontext(phba, ctiocb); /* Xmit CT response on exchange <xid> */ lpfc_printf_log(phba, KERN_INFO, LOG_ELS, "2722 Xmit CT response on exchange x%x Data: x%x x%x x%x\n", ulp_context, iotag, tag, phba->link_state); ctiocb->cmd_flag |= LPFC_IO_LIBDFC; ctiocb->vport = phba->pport; ctiocb->context_un.dd_data = dd_data; ctiocb->cmd_dmabuf = cmp; ctiocb->bpl_dmabuf = bmp; ctiocb->ndlp = ndlp; ctiocb->cmd_cmpl = lpfc_issue_ct_rsp_cmp; dd_data->type = TYPE_IOCB; dd_data->set_job = job; dd_data->context_un.iocb.cmdiocbq = ctiocb; dd_data->context_un.iocb.ndlp = lpfc_nlp_get(ndlp); if (!dd_data->context_un.iocb.ndlp) { rc = -IOCB_ERROR; goto issue_ct_rsp_exit; } dd_data->context_un.iocb.rmp = NULL; job->dd_data = dd_data; if (phba->cfg_poll & DISABLE_FCP_RING_INT) { if (lpfc_readl(phba->HCregaddr, &creg_val)) { rc = -IOCB_ERROR; goto issue_ct_rsp_exit; } creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING); writel(creg_val, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ } rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0); if (rc == IOCB_SUCCESS) { spin_lock_irqsave(&phba->hbalock, flags); /* make sure the I/O had not been completed/released */ if (ctiocb->cmd_flag & LPFC_IO_LIBDFC) { /* open up abort window to timeout handler */ ctiocb->cmd_flag |= LPFC_IO_CMD_OUTSTANDING; } spin_unlock_irqrestore(&phba->hbalock, flags); return 0; /* done for now */ } /* iocb failed so cleanup */ job->dd_data = NULL; lpfc_nlp_put(ndlp); issue_ct_rsp_exit: lpfc_sli_release_iocbq(phba, ctiocb); no_ctiocb: kfree(dd_data); no_dd_data: return rc; } /** * lpfc_bsg_send_mgmt_rsp - process a SEND_MGMT_RESP bsg vendor command * @job: SEND_MGMT_RESP fc_bsg_job **/ static int lpfc_bsg_send_mgmt_rsp(struct bsg_job *job) { struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job)); struct lpfc_hba *phba = vport->phba; struct fc_bsg_request *bsg_request = job->request; struct fc_bsg_reply *bsg_reply = job->reply; struct send_mgmt_resp *mgmt_resp = (struct send_mgmt_resp *) bsg_request->rqst_data.h_vendor.vendor_cmd; struct ulp_bde64 *bpl; struct lpfc_dmabuf *bmp = NULL, *cmp = NULL; int bpl_entries; uint32_t tag = mgmt_resp->tag; unsigned long reqbfrcnt = (unsigned long)job->request_payload.payload_len; int rc = 0; /* in case no data is transferred */ bsg_reply->reply_payload_rcv_len = 0; if (!reqbfrcnt || (reqbfrcnt > (80 * BUF_SZ_4K))) { rc = -ERANGE; goto send_mgmt_rsp_exit; } bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (!bmp) { rc = -ENOMEM; goto send_mgmt_rsp_exit; } bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys); if (!bmp->virt) { rc = -ENOMEM; goto send_mgmt_rsp_free_bmp; } INIT_LIST_HEAD(&bmp->list); bpl = (struct ulp_bde64 *) bmp->virt; bpl_entries = (LPFC_BPL_SIZE/sizeof(struct ulp_bde64)); cmp = lpfc_alloc_bsg_buffers(phba, job->request_payload.payload_len, 1, bpl, &bpl_entries); if (!cmp) { rc = -ENOMEM; goto send_mgmt_rsp_free_bmp; } lpfc_bsg_copy_data(cmp, &job->request_payload, job->request_payload.payload_len, 1); rc = lpfc_issue_ct_rsp(phba, job, tag, cmp, bmp, bpl_entries); if (rc == IOCB_SUCCESS) return 0; /* done for now */ rc = -EACCES; lpfc_free_bsg_buffers(phba, cmp); send_mgmt_rsp_free_bmp: if (bmp->virt) lpfc_mbuf_free(phba, bmp->virt, bmp->phys); kfree(bmp); send_mgmt_rsp_exit: /* make error code available to userspace */ bsg_reply->result = rc; job->dd_data = NULL; return rc; } /** * lpfc_bsg_diag_mode_enter - process preparing into device diag loopback mode * @phba: Pointer to HBA context object. * * This function is responsible for preparing driver for diag loopback * on device. */ static int lpfc_bsg_diag_mode_enter(struct lpfc_hba *phba) { struct lpfc_vport **vports; struct Scsi_Host *shost; struct lpfc_sli *psli; struct lpfc_queue *qp = NULL; struct lpfc_sli_ring *pring; int i = 0; psli = &phba->sli; if (!psli) return -ENODEV; if ((phba->link_state == LPFC_HBA_ERROR) || (psli->sli_flag & LPFC_BLOCK_MGMT_IO) || (!(psli->sli_flag & LPFC_SLI_ACTIVE))) return -EACCES; vports = lpfc_create_vport_work_array(phba); if (vports) { for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { shost = lpfc_shost_from_vport(vports[i]); scsi_block_requests(shost); } lpfc_destroy_vport_work_array(phba, vports); } else { shost = lpfc_shost_from_vport(phba->pport); scsi_block_requests(shost); } if (phba->sli_rev != LPFC_SLI_REV4) { pring = &psli->sli3_ring[LPFC_FCP_RING]; lpfc_emptyq_wait(phba, &pring->txcmplq, &phba->hbalock); return 0; } list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) { pring = qp->pring; if (!pring || (pring->ringno != LPFC_FCP_RING)) continue; if (!lpfc_emptyq_wait(phba, &pring->txcmplq, &pring->ring_lock)) break; } return 0; } /** * lpfc_bsg_diag_mode_exit - exit process from device diag loopback mode * @phba: Pointer to HBA context object. * * This function is responsible for driver exit processing of setting up * diag loopback mode on device. */ static void lpfc_bsg_diag_mode_exit(struct lpfc_hba *phba) { struct Scsi_Host *shost; struct lpfc_vport **vports; int i; vports = lpfc_create_vport_work_array(phba); if (vports) { for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { shost = lpfc_shost_from_vport(vports[i]); scsi_unblock_requests(shost); } lpfc_destroy_vport_work_array(phba, vports); } else { shost = lpfc_shost_from_vport(phba->pport); scsi_unblock_requests(shost); } return; } /** * lpfc_sli3_bsg_diag_loopback_mode - process an sli3 bsg vendor command * @phba: Pointer to HBA context object. * @job: LPFC_BSG_VENDOR_DIAG_MODE * * This function is responsible for placing an sli3 port into diagnostic * loopback mode in order to perform a diagnostic loopback test. * All new scsi requests are blocked, a small delay is used to allow the * scsi requests to complete then the link is brought down. If the link is * is placed in loopback mode then scsi requests are again allowed * so the scsi mid-layer doesn't give up on the port. * All of this is done in-line. */ static int lpfc_sli3_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct bsg_job *job) { struct fc_bsg_request *bsg_request = job->request; struct fc_bsg_reply *bsg_reply = job->reply; struct diag_mode_set *loopback_mode; uint32_t link_flags; uint32_t timeout; LPFC_MBOXQ_t *pmboxq = NULL; int mbxstatus = MBX_SUCCESS; int i = 0; int rc = 0; /* no data to return just the return code */ bsg_reply->reply_payload_rcv_len = 0; if (job->request_len < sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_set)) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2738 Received DIAG MODE request size:%d " "below the minimum size:%d\n", job->request_len, (int)(sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_set))); rc = -EINVAL; goto job_error; } rc = lpfc_bsg_diag_mode_enter(phba); if (rc) goto job_error; /* bring the link to diagnostic mode */ loopback_mode = (struct diag_mode_set *) bsg_request->rqst_data.h_vendor.vendor_cmd; link_flags = loopback_mode->type; timeout = loopback_mode->timeout * 100; pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmboxq) { rc = -ENOMEM; goto loopback_mode_exit; } memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t)); pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK; pmboxq->u.mb.mbxOwner = OWN_HOST; mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO); if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0)) { /* wait for link down before proceeding */ i = 0; while (phba->link_state != LPFC_LINK_DOWN) { if (i++ > timeout) { rc = -ETIMEDOUT; goto loopback_mode_exit; } msleep(10); } memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t)); if (link_flags == INTERNAL_LOOP_BACK) pmboxq->u.mb.un.varInitLnk.link_flags = FLAGS_LOCAL_LB; else pmboxq->u.mb.un.varInitLnk.link_flags = FLAGS_TOPOLOGY_MODE_LOOP; pmboxq->u.mb.mbxCommand = MBX_INIT_LINK; pmboxq->u.mb.mbxOwner = OWN_HOST; mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO); if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus)) rc = -ENODEV; else { spin_lock_irq(&phba->hbalock); phba->link_flag |= LS_LOOPBACK_MODE; spin_unlock_irq(&phba->hbalock); /* wait for the link attention interrupt */ msleep(100); i = 0; while (phba->link_state != LPFC_HBA_READY) { if (i++ > timeout) { rc = -ETIMEDOUT; break; } msleep(10); } } } else rc = -ENODEV; loopback_mode_exit: lpfc_bsg_diag_mode_exit(phba); /* * Let SLI layer release mboxq if mbox command completed after timeout. */ if (pmboxq && mbxstatus != MBX_TIMEOUT) mempool_free(pmboxq, phba->mbox_mem_pool); job_error: /* make error code available to userspace */ bsg_reply->result = rc; /* complete the job back to userspace if no error */ if (rc == 0) bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); return rc; } /** * lpfc_sli4_bsg_set_link_diag_state - set sli4 link diag state * @phba: Pointer to HBA context object. * @diag: Flag for set link to diag or nomral operation state. * * This function is responsible for issuing a sli4 mailbox command for setting * link to either diag state or normal operation state. */ static int lpfc_sli4_bsg_set_link_diag_state(struct lpfc_hba *phba, uint32_t diag) { LPFC_MBOXQ_t *pmboxq; struct lpfc_mbx_set_link_diag_state *link_diag_state; uint32_t req_len, alloc_len; int mbxstatus = MBX_SUCCESS, rc; pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmboxq) return -ENOMEM; req_len = (sizeof(struct lpfc_mbx_set_link_diag_state) - sizeof(struct lpfc_sli4_cfg_mhdr)); alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE, LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE, req_len, LPFC_SLI4_MBX_EMBED); if (alloc_len != req_len) { rc = -ENOMEM; goto link_diag_state_set_out; } lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "3128 Set link to diagnostic state:x%x (x%x/x%x)\n", diag, phba->sli4_hba.lnk_info.lnk_tp, phba->sli4_hba.lnk_info.lnk_no); link_diag_state = &pmboxq->u.mqe.un.link_diag_state; bf_set(lpfc_mbx_set_diag_state_diag_bit_valid, &link_diag_state->u.req, LPFC_DIAG_STATE_DIAG_BIT_VALID_CHANGE); bf_set(lpfc_mbx_set_diag_state_link_num, &link_diag_state->u.req, phba->sli4_hba.lnk_info.lnk_no); bf_set(lpfc_mbx_set_diag_state_link_type, &link_diag_state->u.req, phba->sli4_hba.lnk_info.lnk_tp); if (diag) bf_set(lpfc_mbx_set_diag_state_diag, &link_diag_state->u.req, 1); else bf_set(lpfc_mbx_set_diag_state_diag, &link_diag_state->u.req, 0); mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO); if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0)) rc = 0; else rc = -ENODEV; link_diag_state_set_out: if (pmboxq && (mbxstatus != MBX_TIMEOUT)) mempool_free(pmboxq, phba->mbox_mem_pool); return rc; } /** * lpfc_sli4_bsg_set_loopback_mode - set sli4 internal loopback diagnostic * @phba: Pointer to HBA context object. * @mode: loopback mode to set * @link_no: link number for loopback mode to set * * This function is responsible for issuing a sli4 mailbox command for setting * up loopback diagnostic for a link. */ static int lpfc_sli4_bsg_set_loopback_mode(struct lpfc_hba *phba, int mode, uint32_t link_no) { LPFC_MBOXQ_t *pmboxq; uint32_t req_len, alloc_len; struct lpfc_mbx_set_link_diag_loopback *link_diag_loopback; int mbxstatus = MBX_SUCCESS, rc = 0; pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmboxq) return -ENOMEM; req_len = (sizeof(struct lpfc_mbx_set_link_diag_loopback) - sizeof(struct lpfc_sli4_cfg_mhdr)); alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE, LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_LOOPBACK, req_len, LPFC_SLI4_MBX_EMBED); if (alloc_len != req_len) { mempool_free(pmboxq, phba->mbox_mem_pool); return -ENOMEM; } link_diag_loopback = &pmboxq->u.mqe.un.link_diag_loopback; bf_set(lpfc_mbx_set_diag_state_link_num, &link_diag_loopback->u.req, link_no); if (phba->sli4_hba.conf_trunk & (1 << link_no)) { bf_set(lpfc_mbx_set_diag_state_link_type, &link_diag_loopback->u.req, LPFC_LNK_FC_TRUNKED); } else { bf_set(lpfc_mbx_set_diag_state_link_type, &link_diag_loopback->u.req, phba->sli4_hba.lnk_info.lnk_tp); } bf_set(lpfc_mbx_set_diag_lpbk_type, &link_diag_loopback->u.req, mode); mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO); if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus)) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "3127 Failed setup loopback mode mailbox " "command, rc:x%x, status:x%x\n", mbxstatus, pmboxq->u.mb.mbxStatus); rc = -ENODEV; } if (pmboxq && (mbxstatus != MBX_TIMEOUT)) mempool_free(pmboxq, phba->mbox_mem_pool); return rc; } /** * lpfc_sli4_diag_fcport_reg_setup - setup port registrations for diagnostic * @phba: Pointer to HBA context object. * * This function set up SLI4 FC port registrations for diagnostic run, which * includes all the rpis, vfi, and also vpi. */ static int lpfc_sli4_diag_fcport_reg_setup(struct lpfc_hba *phba) { if (test_bit(FC_VFI_REGISTERED, &phba->pport->fc_flag)) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "3136 Port still had vfi registered: " "mydid:x%x, fcfi:%d, vfi:%d, vpi:%d\n", phba->pport->fc_myDID, phba->fcf.fcfi, phba->sli4_hba.vfi_ids[phba->pport->vfi], phba->vpi_ids[phba->pport->vpi]); return -EINVAL; } return lpfc_issue_reg_vfi(phba->pport); } /** * lpfc_sli4_bsg_diag_loopback_mode - process an sli4 bsg vendor command * @phba: Pointer to HBA context object. * @job: LPFC_BSG_VENDOR_DIAG_MODE * * This function is responsible for placing an sli4 port into diagnostic * loopback mode in order to perform a diagnostic loopback test. */ static int lpfc_sli4_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct bsg_job *job) { struct fc_bsg_request *bsg_request = job->request; struct fc_bsg_reply *bsg_reply = job->reply; struct diag_mode_set *loopback_mode; uint32_t link_flags, timeout, link_no; int i, rc = 0; /* no data to return just the return code */ bsg_reply->reply_payload_rcv_len = 0; if (job->request_len < sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_set)) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "3011 Received DIAG MODE request size:%d " "below the minimum size:%d\n", job->request_len, (int)(sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_set))); rc = -EINVAL; goto job_done; } loopback_mode = (struct diag_mode_set *) bsg_request->rqst_data.h_vendor.vendor_cmd; link_flags = loopback_mode->type; timeout = loopback_mode->timeout * 100; if (loopback_mode->physical_link == -1) link_no = phba->sli4_hba.lnk_info.lnk_no; else link_no = loopback_mode->physical_link; if (link_flags == DISABLE_LOOP_BACK) { rc = lpfc_sli4_bsg_set_loopback_mode(phba, LPFC_DIAG_LOOPBACK_TYPE_DISABLE, link_no); if (!rc) { /* Unset the need disable bit */ phba->sli4_hba.conf_trunk &= ~((1 << link_no) << 4); } goto job_done; } else { /* Check if we need to disable the loopback state */ if (phba->sli4_hba.conf_trunk & ((1 << link_no) << 4)) { rc = -EPERM; goto job_done; } } rc = lpfc_bsg_diag_mode_enter(phba); if (rc) goto job_done; /* indicate we are in loobpack diagnostic mode */ spin_lock_irq(&phba->hbalock); phba->link_flag |= LS_LOOPBACK_MODE; spin_unlock_irq(&phba->hbalock); /* reset port to start frome scratch */ rc = lpfc_selective_reset(phba); if (rc) goto job_done; /* bring the link to diagnostic mode */ lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "3129 Bring link to diagnostic state.\n"); rc = lpfc_sli4_bsg_set_link_diag_state(phba, 1); if (rc) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "3130 Failed to bring link to diagnostic " "state, rc:x%x\n", rc); goto loopback_mode_exit; } /* wait for link down before proceeding */ i = 0; while (phba->link_state != LPFC_LINK_DOWN) { if (i++ > timeout) { rc = -ETIMEDOUT; lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "3131 Timeout waiting for link to " "diagnostic mode, timeout:%d ms\n", timeout * 10); goto loopback_mode_exit; } msleep(10); } /* set up loopback mode */ lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "3132 Set up loopback mode:x%x\n", link_flags); switch (link_flags) { case INTERNAL_LOOP_BACK: if (phba->sli4_hba.conf_trunk & (1 << link_no)) { rc = lpfc_sli4_bsg_set_loopback_mode(phba, LPFC_DIAG_LOOPBACK_TYPE_INTERNAL, link_no); } else { /* Trunk is configured, but link is not in this trunk */ if (phba->sli4_hba.conf_trunk) { rc = -ELNRNG; goto loopback_mode_exit; } rc = lpfc_sli4_bsg_set_loopback_mode(phba, LPFC_DIAG_LOOPBACK_TYPE_INTERNAL, link_no); } if (!rc) { /* Set the need disable bit */ phba->sli4_hba.conf_trunk |= (1 << link_no) << 4; } break; case EXTERNAL_LOOP_BACK: if (phba->sli4_hba.conf_trunk & (1 << link_no)) { rc = lpfc_sli4_bsg_set_loopback_mode(phba, LPFC_DIAG_LOOPBACK_TYPE_EXTERNAL_TRUNKED, link_no); } else { /* Trunk is configured, but link is not in this trunk */ if (phba->sli4_hba.conf_trunk) { rc = -ELNRNG; goto loopback_mode_exit; } rc = lpfc_sli4_bsg_set_loopback_mode(phba, LPFC_DIAG_LOOPBACK_TYPE_SERDES, link_no); } if (!rc) { /* Set the need disable bit */ phba->sli4_hba.conf_trunk |= (1 << link_no) << 4; } break; default: rc = -EINVAL; lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "3141 Loopback mode:x%x not supported\n", link_flags); goto loopback_mode_exit; } if (!rc) { /* wait for the link attention interrupt */ msleep(100); i = 0; while (phba->link_state < LPFC_LINK_UP) { if (i++ > timeout) { rc = -ETIMEDOUT; lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "3137 Timeout waiting for link up " "in loopback mode, timeout:%d ms\n", timeout * 10); break; } msleep(10); } } /* port resource registration setup for loopback diagnostic */ if (!rc) { /* set up a none zero myDID for loopback test */ phba->pport->fc_myDID = 1; rc = lpfc_sli4_diag_fcport_reg_setup(phba); } else goto loopback_mode_exit; if (!rc) { /* wait for the port ready */ msleep(100); i = 0; while (phba->link_state != LPFC_HBA_READY) { if (i++ > timeout) { rc = -ETIMEDOUT; lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "3133 Timeout waiting for port " "loopback mode ready, timeout:%d ms\n", timeout * 10); break; } msleep(10); } } loopback_mode_exit: /* clear loopback diagnostic mode */ if (rc) { spin_lock_irq(&phba->hbalock); phba->link_flag &= ~LS_LOOPBACK_MODE; spin_unlock_irq(&phba->hbalock); } lpfc_bsg_diag_mode_exit(phba); job_done: /* make error code available to userspace */ bsg_reply->result = rc; /* complete the job back to userspace if no error */ if (rc == 0) bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); return rc; } /** * lpfc_bsg_diag_loopback_mode - bsg vendor command for diag loopback mode * @job: LPFC_BSG_VENDOR_DIAG_MODE * * This function is responsible for responding to check and dispatch bsg diag * command from the user to proper driver action routines. */ static int lpfc_bsg_diag_loopback_mode(struct bsg_job *job) { struct Scsi_Host *shost; struct lpfc_vport *vport; struct lpfc_hba *phba; int rc; shost = fc_bsg_to_shost(job); if (!shost) return -ENODEV; vport = shost_priv(shost); if (!vport) return -ENODEV; phba = vport->phba; if (!phba) return -ENODEV; if (phba->sli_rev < LPFC_SLI_REV4) rc = lpfc_sli3_bsg_diag_loopback_mode(phba, job); else if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >= LPFC_SLI_INTF_IF_TYPE_2) rc = lpfc_sli4_bsg_diag_loopback_mode(phba, job); else rc = -ENODEV; return rc; } /** * lpfc_sli4_bsg_diag_mode_end - sli4 bsg vendor command for ending diag mode * @job: LPFC_BSG_VENDOR_DIAG_MODE_END * * This function is responsible for responding to check and dispatch bsg diag * command from the user to proper driver action routines. */ static int lpfc_sli4_bsg_diag_mode_end(struct bsg_job *job) { struct fc_bsg_request *bsg_request = job->request; struct fc_bsg_reply *bsg_reply = job->reply; struct Scsi_Host *shost; struct lpfc_vport *vport; struct lpfc_hba *phba; struct diag_mode_set *loopback_mode_end_cmd; uint32_t timeout; int rc, i; shost = fc_bsg_to_shost(job); if (!shost) return -ENODEV; vport = shost_priv(shost); if (!vport) return -ENODEV; phba = vport->phba; if (!phba) return -ENODEV; if (phba->sli_rev < LPFC_SLI_REV4) return -ENODEV; if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) < LPFC_SLI_INTF_IF_TYPE_2) return -ENODEV; /* clear loopback diagnostic mode */ spin_lock_irq(&phba->hbalock); phba->link_flag &= ~LS_LOOPBACK_MODE; spin_unlock_irq(&phba->hbalock); loopback_mode_end_cmd = (struct diag_mode_set *) bsg_request->rqst_data.h_vendor.vendor_cmd; timeout = loopback_mode_end_cmd->timeout * 100; rc = lpfc_sli4_bsg_set_link_diag_state(phba, 0); if (rc) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "3139 Failed to bring link to diagnostic " "state, rc:x%x\n", rc); goto loopback_mode_end_exit; } /* wait for link down before proceeding */ i = 0; while (phba->link_state != LPFC_LINK_DOWN) { if (i++ > timeout) { lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "3140 Timeout waiting for link to " "diagnostic mode_end, timeout:%d ms\n", timeout * 10); /* there is nothing much we can do here */ break; } msleep(10); } /* reset port resource registrations */ rc = lpfc_selective_reset(phba); phba->pport->fc_myDID = 0; loopback_mode_end_exit: /* make return code available to userspace */ bsg_reply->result = rc; /* complete the job back to userspace if no error */ if (rc == 0) bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); return rc; } /** * lpfc_sli4_bsg_link_diag_test - sli4 bsg vendor command for diag link test * @job: LPFC_BSG_VENDOR_DIAG_LINK_TEST * * This function is to perform SLI4 diag link test request from the user * applicaiton. */ static int lpfc_sli4_bsg_link_diag_test(struct bsg_job *job) { struct fc_bsg_request *bsg_request = job->request; struct fc_bsg_reply *bsg_reply = job->reply; struct Scsi_Host *shost; struct lpfc_vport *vport; struct lpfc_hba *phba; LPFC_MBOXQ_t *pmboxq; struct sli4_link_diag *link_diag_test_cmd; uint32_t req_len, alloc_len; struct lpfc_mbx_run_link_diag_test *run_link_diag_test; union lpfc_sli4_cfg_shdr *shdr; uint32_t shdr_status, shdr_add_status; struct diag_status *diag_status_reply; int mbxstatus, rc = -ENODEV, rc1 = 0; shost = fc_bsg_to_shost(job); if (!shost) goto job_error; vport = shost_priv(shost); if (!vport) goto job_error; phba = vport->phba; if (!phba) goto job_error; if (phba->sli_rev < LPFC_SLI_REV4) goto job_error; if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) < LPFC_SLI_INTF_IF_TYPE_2) goto job_error; if (job->request_len < sizeof(struct fc_bsg_request) + sizeof(struct sli4_link_diag)) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "3013 Received LINK DIAG TEST request " " size:%d below the minimum size:%d\n", job->request_len, (int)(sizeof(struct fc_bsg_request) + sizeof(struct sli4_link_diag))); rc = -EINVAL; goto job_error; } rc = lpfc_bsg_diag_mode_enter(phba); if (rc) goto job_error; link_diag_test_cmd = (struct sli4_link_diag *) bsg_request->rqst_data.h_vendor.vendor_cmd; rc = lpfc_sli4_bsg_set_link_diag_state(phba, 1); if (rc) goto job_error; pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmboxq) { rc = -ENOMEM; goto link_diag_test_exit; } req_len = (sizeof(struct lpfc_mbx_set_link_diag_state) - sizeof(struct lpfc_sli4_cfg_mhdr)); alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE, LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE, req_len, LPFC_SLI4_MBX_EMBED); if (alloc_len != req_len) { rc = -ENOMEM; goto link_diag_test_exit; } run_link_diag_test = &pmboxq->u.mqe.un.link_diag_test; bf_set(lpfc_mbx_run_diag_test_link_num, &run_link_diag_test->u.req, phba->sli4_hba.lnk_info.lnk_no); bf_set(lpfc_mbx_run_diag_test_link_type, &run_link_diag_test->u.req, phba->sli4_hba.lnk_info.lnk_tp); bf_set(lpfc_mbx_run_diag_test_test_id, &run_link_diag_test->u.req, link_diag_test_cmd->test_id); bf_set(lpfc_mbx_run_diag_test_loops, &run_link_diag_test->u.req, link_diag_test_cmd->loops); bf_set(lpfc_mbx_run_diag_test_test_ver, &run_link_diag_test->u.req, link_diag_test_cmd->test_version); bf_set(lpfc_mbx_run_diag_test_err_act, &run_link_diag_test->u.req, link_diag_test_cmd->error_action); mbxstatus = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL); shdr = (union lpfc_sli4_cfg_shdr *) &pmboxq->u.mqe.un.sli4_config.header.cfg_shdr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (shdr_status || shdr_add_status || mbxstatus) { lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "3010 Run link diag test mailbox failed with " "mbx_status x%x status x%x, add_status x%x\n", mbxstatus, shdr_status, shdr_add_status); } diag_status_reply = (struct diag_status *) bsg_reply->reply_data.vendor_reply.vendor_rsp; if (job->reply_len < sizeof(*bsg_reply) + sizeof(*diag_status_reply)) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "3012 Received Run link diag test reply " "below minimum size (%d): reply_len:%d\n", (int)(sizeof(*bsg_reply) + sizeof(*diag_status_reply)), job->reply_len); rc = -EINVAL; goto job_error; } diag_status_reply->mbox_status = mbxstatus; diag_status_reply->shdr_status = shdr_status; diag_status_reply->shdr_add_status = shdr_add_status; link_diag_test_exit: rc1 = lpfc_sli4_bsg_set_link_diag_state(phba, 0); if (pmboxq) mempool_free(pmboxq, phba->mbox_mem_pool); lpfc_bsg_diag_mode_exit(phba); job_error: /* make error code available to userspace */ if (rc1 && !rc) rc = rc1; bsg_reply->result = rc; /* complete the job back to userspace if no error */ if (rc == 0) bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); return rc; } /** * lpfcdiag_loop_self_reg - obtains a remote port login id * @phba: Pointer to HBA context object * @rpi: Pointer to a remote port login id * * This function obtains a remote port login id so the diag loopback test * can send and receive its own unsolicited CT command. **/ static int lpfcdiag_loop_self_reg(struct lpfc_hba *phba, uint16_t *rpi) { LPFC_MBOXQ_t *mbox; struct lpfc_dmabuf *dmabuff; int status; mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return -ENOMEM; if (phba->sli_rev < LPFC_SLI_REV4) status = lpfc_reg_rpi(phba, 0, phba->pport->fc_myDID, (uint8_t *)&phba->pport->fc_sparam, mbox, *rpi); else { *rpi = lpfc_sli4_alloc_rpi(phba); if (*rpi == LPFC_RPI_ALLOC_ERROR) { mempool_free(mbox, phba->mbox_mem_pool); return -EBUSY; } status = lpfc_reg_rpi(phba, phba->pport->vpi, phba->pport->fc_myDID, (uint8_t *)&phba->pport->fc_sparam, mbox, *rpi); } if (status) { mempool_free(mbox, phba->mbox_mem_pool); if (phba->sli_rev == LPFC_SLI_REV4) lpfc_sli4_free_rpi(phba, *rpi); return -ENOMEM; } dmabuff = mbox->ctx_buf; mbox->ctx_buf = NULL; mbox->ctx_ndlp = NULL; status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) { lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys); kfree(dmabuff); if (status != MBX_TIMEOUT) mempool_free(mbox, phba->mbox_mem_pool); if (phba->sli_rev == LPFC_SLI_REV4) lpfc_sli4_free_rpi(phba, *rpi); return -ENODEV; } if (phba->sli_rev < LPFC_SLI_REV4) *rpi = mbox->u.mb.un.varWords[0]; lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys); kfree(dmabuff); mempool_free(mbox, phba->mbox_mem_pool); return 0; } /** * lpfcdiag_loop_self_unreg - unregs from the rpi * @phba: Pointer to HBA context object * @rpi: Remote port login id * * This function unregisters the rpi obtained in lpfcdiag_loop_self_reg **/ static int lpfcdiag_loop_self_unreg(struct lpfc_hba *phba, uint16_t rpi) { LPFC_MBOXQ_t *mbox; int status; /* Allocate mboxq structure */ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (mbox == NULL) return -ENOMEM; if (phba->sli_rev < LPFC_SLI_REV4) lpfc_unreg_login(phba, 0, rpi, mbox); else lpfc_unreg_login(phba, phba->pport->vpi, phba->sli4_hba.rpi_ids[rpi], mbox); status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) { if (status != MBX_TIMEOUT) mempool_free(mbox, phba->mbox_mem_pool); return -EIO; } mempool_free(mbox, phba->mbox_mem_pool); if (phba->sli_rev == LPFC_SLI_REV4) lpfc_sli4_free_rpi(phba, rpi); return 0; } /** * lpfcdiag_loop_get_xri - obtains the transmit and receive ids * @phba: Pointer to HBA context object * @rpi: Remote port login id * @txxri: Pointer to transmit exchange id * @rxxri: Pointer to response exchabge id * * This function obtains the transmit and receive ids required to send * an unsolicited ct command with a payload. A special lpfc FsType and CmdRsp * flags are used to the unsolicited response handler is able to process * the ct command sent on the same port. **/ static int lpfcdiag_loop_get_xri(struct lpfc_hba *phba, uint16_t rpi, uint16_t *txxri, uint16_t * rxxri) { struct lpfc_bsg_event *evt; struct lpfc_iocbq *cmdiocbq, *rspiocbq; struct lpfc_dmabuf *dmabuf; struct ulp_bde64 *bpl = NULL; struct lpfc_sli_ct_request *ctreq = NULL; int ret_val = 0; int time_left; int iocb_stat = IOCB_SUCCESS; unsigned long flags; u32 status; *txxri = 0; *rxxri = 0; evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid, SLI_CT_ELX_LOOPBACK); if (!evt) return -ENOMEM; spin_lock_irqsave(&phba->ct_ev_lock, flags); list_add(&evt->node, &phba->ct_ev_waiters); lpfc_bsg_event_ref(evt); spin_unlock_irqrestore(&phba->ct_ev_lock, flags); cmdiocbq = lpfc_sli_get_iocbq(phba); rspiocbq = lpfc_sli_get_iocbq(phba); dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (dmabuf) { dmabuf->virt = lpfc_mbuf_alloc(phba, 0, &dmabuf->phys); if (dmabuf->virt) { INIT_LIST_HEAD(&dmabuf->list); bpl = (struct ulp_bde64 *) dmabuf->virt; memset(bpl, 0, sizeof(*bpl)); ctreq = (struct lpfc_sli_ct_request *)(bpl + 1); bpl->addrHigh = le32_to_cpu(putPaddrHigh(dmabuf->phys + sizeof(*bpl))); bpl->addrLow = le32_to_cpu(putPaddrLow(dmabuf->phys + sizeof(*bpl))); bpl->tus.f.bdeFlags = 0; bpl->tus.f.bdeSize = ELX_LOOPBACK_HEADER_SZ; bpl->tus.w = le32_to_cpu(bpl->tus.w); } } if (cmdiocbq == NULL || rspiocbq == NULL || dmabuf == NULL || bpl == NULL || ctreq == NULL || dmabuf->virt == NULL) { ret_val = -ENOMEM; goto err_get_xri_exit; } memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ); ctreq->RevisionId.bits.Revision = SLI_CT_REVISION; ctreq->RevisionId.bits.InId = 0; ctreq->FsType = SLI_CT_ELX_LOOPBACK; ctreq->FsSubType = 0; ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_XRI_SETUP; ctreq->CommandResponse.bits.Size = 0; cmdiocbq->bpl_dmabuf = dmabuf; cmdiocbq->cmd_flag |= LPFC_IO_LIBDFC; cmdiocbq->vport = phba->pport; cmdiocbq->cmd_cmpl = NULL; lpfc_sli_prep_xmit_seq64(phba, cmdiocbq, dmabuf, rpi, 0, 1, FC_RCTL_DD_SOL_CTL, 0, CMD_XMIT_SEQUENCE64_CR); iocb_stat = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq, rspiocbq, (phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT); status = get_job_ulpstatus(phba, rspiocbq); if (iocb_stat != IOCB_SUCCESS || status != IOCB_SUCCESS) { ret_val = -EIO; goto err_get_xri_exit; } *txxri = get_job_ulpcontext(phba, rspiocbq); evt->waiting = 1; evt->wait_time_stamp = jiffies; time_left = wait_event_interruptible_timeout( evt->wq, !list_empty(&evt->events_to_see), msecs_to_jiffies(1000 * ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT))); if (list_empty(&evt->events_to_see)) ret_val = (time_left) ? -EINTR : -ETIMEDOUT; else { spin_lock_irqsave(&phba->ct_ev_lock, flags); list_move(evt->events_to_see.prev, &evt->events_to_get); spin_unlock_irqrestore(&phba->ct_ev_lock, flags); *rxxri = (list_entry(evt->events_to_get.prev, typeof(struct event_data), node))->immed_dat; } evt->waiting = 0; err_get_xri_exit: spin_lock_irqsave(&phba->ct_ev_lock, flags); lpfc_bsg_event_unref(evt); /* release ref */ lpfc_bsg_event_unref(evt); /* delete */ spin_unlock_irqrestore(&phba->ct_ev_lock, flags); if (dmabuf) { if (dmabuf->virt) lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys); kfree(dmabuf); } if (cmdiocbq && (iocb_stat != IOCB_TIMEDOUT)) lpfc_sli_release_iocbq(phba, cmdiocbq); if (rspiocbq) lpfc_sli_release_iocbq(phba, rspiocbq); return ret_val; } /** * lpfc_bsg_dma_page_alloc - allocate a bsg mbox page sized dma buffers * @phba: Pointer to HBA context object * * This function allocates BSG_MBOX_SIZE (4KB) page size dma buffer and * returns the pointer to the buffer. **/ static struct lpfc_dmabuf * lpfc_bsg_dma_page_alloc(struct lpfc_hba *phba) { struct lpfc_dmabuf *dmabuf; struct pci_dev *pcidev = phba->pcidev; /* allocate dma buffer struct */ dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (!dmabuf) return NULL; INIT_LIST_HEAD(&dmabuf->list); /* now, allocate dma buffer */ dmabuf->virt = dma_alloc_coherent(&pcidev->dev, BSG_MBOX_SIZE, &(dmabuf->phys), GFP_KERNEL); if (!dmabuf->virt) { kfree(dmabuf); return NULL; } return dmabuf; } /** * lpfc_bsg_dma_page_free - free a bsg mbox page sized dma buffer * @phba: Pointer to HBA context object. * @dmabuf: Pointer to the bsg mbox page sized dma buffer descriptor. * * This routine just simply frees a dma buffer and its associated buffer * descriptor referred by @dmabuf. **/ static void lpfc_bsg_dma_page_free(struct lpfc_hba *phba, struct lpfc_dmabuf *dmabuf) { struct pci_dev *pcidev = phba->pcidev; if (!dmabuf) return; if (dmabuf->virt) dma_free_coherent(&pcidev->dev, BSG_MBOX_SIZE, dmabuf->virt, dmabuf->phys); kfree(dmabuf); return; } /** * lpfc_bsg_dma_page_list_free - free a list of bsg mbox page sized dma buffers * @phba: Pointer to HBA context object. * @dmabuf_list: Pointer to a list of bsg mbox page sized dma buffer descs. * * This routine just simply frees all dma buffers and their associated buffer * descriptors referred by @dmabuf_list. **/ static void lpfc_bsg_dma_page_list_free(struct lpfc_hba *phba, struct list_head *dmabuf_list) { struct lpfc_dmabuf *dmabuf, *next_dmabuf; if (list_empty(dmabuf_list)) return; list_for_each_entry_safe(dmabuf, next_dmabuf, dmabuf_list, list) { list_del_init(&dmabuf->list); lpfc_bsg_dma_page_free(phba, dmabuf); } return; } /** * diag_cmd_data_alloc - fills in a bde struct with dma buffers * @phba: Pointer to HBA context object * @bpl: Pointer to 64 bit bde structure * @size: Number of bytes to process * @nocopydata: Flag to copy user data into the allocated buffer * * This function allocates page size buffers and populates an lpfc_dmabufext. * If allowed the user data pointed to with indataptr is copied into the kernel * memory. The chained list of page size buffers is returned. **/ static struct lpfc_dmabufext * diag_cmd_data_alloc(struct lpfc_hba *phba, struct ulp_bde64 *bpl, uint32_t size, int nocopydata) { struct lpfc_dmabufext *mlist = NULL; struct lpfc_dmabufext *dmp; int cnt, offset = 0, i = 0; struct pci_dev *pcidev; pcidev = phba->pcidev; while (size) { /* We get chunks of 4K */ if (size > BUF_SZ_4K) cnt = BUF_SZ_4K; else cnt = size; /* allocate struct lpfc_dmabufext buffer header */ dmp = kmalloc(sizeof(struct lpfc_dmabufext), GFP_KERNEL); if (!dmp) goto out; INIT_LIST_HEAD(&dmp->dma.list); /* Queue it to a linked list */ if (mlist) list_add_tail(&dmp->dma.list, &mlist->dma.list); else mlist = dmp; /* allocate buffer */ dmp->dma.virt = dma_alloc_coherent(&pcidev->dev, cnt, &(dmp->dma.phys), GFP_KERNEL); if (!dmp->dma.virt) goto out; dmp->size = cnt; if (nocopydata) { bpl->tus.f.bdeFlags = 0; } else { memset((uint8_t *)dmp->dma.virt, 0, cnt); bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; } /* build buffer ptr list for IOCB */ bpl->addrLow = le32_to_cpu(putPaddrLow(dmp->dma.phys)); bpl->addrHigh = le32_to_cpu(putPaddrHigh(dmp->dma.phys)); bpl->tus.f.bdeSize = (ushort) cnt; bpl->tus.w = le32_to_cpu(bpl->tus.w); bpl++; i++; offset += cnt; size -= cnt; } if (mlist) { mlist->flag = i; return mlist; } out: diag_cmd_data_free(phba, mlist); return NULL; } /** * lpfcdiag_sli3_loop_post_rxbufs - post the receive buffers for an unsol CT cmd * @phba: Pointer to HBA context object * @rxxri: Receive exchange id * @len: Number of data bytes * * This function allocates and posts a data buffer of sufficient size to receive * an unsolicited CT command. **/ static int lpfcdiag_sli3_loop_post_rxbufs(struct lpfc_hba *phba, uint16_t rxxri, size_t len) { struct lpfc_sli_ring *pring; struct lpfc_iocbq *cmdiocbq; IOCB_t *cmd = NULL; struct list_head head, *curr, *next; struct lpfc_dmabuf *rxbmp; struct lpfc_dmabuf *dmp; struct lpfc_dmabuf *mp[2] = {NULL, NULL}; struct ulp_bde64 *rxbpl = NULL; uint32_t num_bde; struct lpfc_dmabufext *rxbuffer = NULL; int ret_val = 0; int iocb_stat; int i = 0; pring = lpfc_phba_elsring(phba); cmdiocbq = lpfc_sli_get_iocbq(phba); rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (rxbmp != NULL) { rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys); if (rxbmp->virt) { INIT_LIST_HEAD(&rxbmp->list); rxbpl = (struct ulp_bde64 *) rxbmp->virt; rxbuffer = diag_cmd_data_alloc(phba, rxbpl, len, 0); } } if (!cmdiocbq || !rxbmp || !rxbpl || !rxbuffer || !pring) { ret_val = -ENOMEM; goto err_post_rxbufs_exit; } /* Queue buffers for the receive exchange */ num_bde = (uint32_t)rxbuffer->flag; dmp = &rxbuffer->dma; cmd = &cmdiocbq->iocb; i = 0; INIT_LIST_HEAD(&head); list_add_tail(&head, &dmp->list); list_for_each_safe(curr, next, &head) { mp[i] = list_entry(curr, struct lpfc_dmabuf, list); list_del(curr); if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { mp[i]->buffer_tag = lpfc_sli_get_buffer_tag(phba); cmd->un.quexri64cx.buff.bde.addrHigh = putPaddrHigh(mp[i]->phys); cmd->un.quexri64cx.buff.bde.addrLow = putPaddrLow(mp[i]->phys); cmd->un.quexri64cx.buff.bde.tus.f.bdeSize = ((struct lpfc_dmabufext *)mp[i])->size; cmd->un.quexri64cx.buff.buffer_tag = mp[i]->buffer_tag; cmd->ulpCommand = CMD_QUE_XRI64_CX; cmd->ulpPU = 0; cmd->ulpLe = 1; cmd->ulpBdeCount = 1; cmd->unsli3.que_xri64cx_ext_words.ebde_count = 0; } else { cmd->un.cont64[i].addrHigh = putPaddrHigh(mp[i]->phys); cmd->un.cont64[i].addrLow = putPaddrLow(mp[i]->phys); cmd->un.cont64[i].tus.f.bdeSize = ((struct lpfc_dmabufext *)mp[i])->size; cmd->ulpBdeCount = ++i; if ((--num_bde > 0) && (i < 2)) continue; cmd->ulpCommand = CMD_QUE_XRI_BUF64_CX; cmd->ulpLe = 1; } cmd->ulpClass = CLASS3; cmd->ulpContext = rxxri; iocb_stat = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0); if (iocb_stat == IOCB_ERROR) { diag_cmd_data_free(phba, (struct lpfc_dmabufext *)mp[0]); if (mp[1]) diag_cmd_data_free(phba, (struct lpfc_dmabufext *)mp[1]); dmp = list_entry(next, struct lpfc_dmabuf, list); ret_val = -EIO; goto err_post_rxbufs_exit; } lpfc_sli_ringpostbuf_put(phba, pring, mp[0]); if (mp[1]) { lpfc_sli_ringpostbuf_put(phba, pring, mp[1]); mp[1] = NULL; } /* The iocb was freed by lpfc_sli_issue_iocb */ cmdiocbq = lpfc_sli_get_iocbq(phba); if (!cmdiocbq) { dmp = list_entry(next, struct lpfc_dmabuf, list); ret_val = -EIO; goto err_post_rxbufs_exit; } cmd = &cmdiocbq->iocb; i = 0; } list_del(&head); err_post_rxbufs_exit: if (rxbmp) { if (rxbmp->virt) lpfc_mbuf_free(phba, rxbmp->virt, rxbmp->phys); kfree(rxbmp); } if (cmdiocbq) lpfc_sli_release_iocbq(phba, cmdiocbq); return ret_val; } /** * lpfc_bsg_diag_loopback_run - run loopback on a port by issue ct cmd to itself * @job: LPFC_BSG_VENDOR_DIAG_TEST fc_bsg_job * * This function receives a user data buffer to be transmitted and received on * the same port, the link must be up and in loopback mode prior * to being called. * 1. A kernel buffer is allocated to copy the user data into. * 2. The port registers with "itself". * 3. The transmit and receive exchange ids are obtained. * 4. The receive exchange id is posted. * 5. A new els loopback event is created. * 6. The command and response iocbs are allocated. * 7. The cmd iocb FsType is set to elx loopback and the CmdRsp to looppback. * * This function is meant to be called n times while the port is in loopback * so it is the apps responsibility to issue a reset to take the port out * of loopback mode. **/ static int lpfc_bsg_diag_loopback_run(struct bsg_job *job) { struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job)); struct fc_bsg_reply *bsg_reply = job->reply; struct lpfc_hba *phba = vport->phba; struct lpfc_bsg_event *evt; struct event_data *evdat; struct lpfc_sli *psli = &phba->sli; uint32_t size; uint32_t full_size; size_t segment_len = 0, segment_offset = 0, current_offset = 0; uint16_t rpi = 0; struct lpfc_iocbq *cmdiocbq, *rspiocbq = NULL; union lpfc_wqe128 *cmdwqe, *rspwqe; struct lpfc_sli_ct_request *ctreq; struct lpfc_dmabuf *txbmp; struct ulp_bde64 *txbpl = NULL; struct lpfc_dmabufext *txbuffer = NULL; struct list_head head; struct lpfc_dmabuf *curr; uint16_t txxri = 0, rxxri; uint32_t num_bde; uint8_t *ptr = NULL, *rx_databuf = NULL; int rc = 0; int time_left; int iocb_stat = IOCB_SUCCESS; unsigned long flags; void *dataout = NULL; uint32_t total_mem; /* in case no data is returned return just the return code */ bsg_reply->reply_payload_rcv_len = 0; if (job->request_len < sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_test)) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2739 Received DIAG TEST request below minimum " "size\n"); rc = -EINVAL; goto loopback_test_exit; } if (job->request_payload.payload_len != job->reply_payload.payload_len) { rc = -EINVAL; goto loopback_test_exit; } if ((phba->link_state == LPFC_HBA_ERROR) || (psli->sli_flag & LPFC_BLOCK_MGMT_IO) || (!(psli->sli_flag & LPFC_SLI_ACTIVE))) { rc = -EACCES; goto loopback_test_exit; } if (!lpfc_is_link_up(phba) || !(phba->link_flag & LS_LOOPBACK_MODE)) { rc = -EACCES; goto loopback_test_exit; } size = job->request_payload.payload_len; full_size = size + ELX_LOOPBACK_HEADER_SZ; /* plus the header */ if ((size == 0) || (size > 80 * BUF_SZ_4K)) { rc = -ERANGE; goto loopback_test_exit; } if (full_size >= BUF_SZ_4K) { /* * Allocate memory for ioctl data. If buffer is bigger than 64k, * then we allocate 64k and re-use that buffer over and over to * xfer the whole block. This is because Linux kernel has a * problem allocating more than 120k of kernel space memory. Saw * problem with GET_FCPTARGETMAPPING... */ if (size <= (64 * 1024)) total_mem = full_size; else total_mem = 64 * 1024; } else /* Allocate memory for ioctl data */ total_mem = BUF_SZ_4K; dataout = kmalloc(total_mem, GFP_KERNEL); if (dataout == NULL) { rc = -ENOMEM; goto loopback_test_exit; } ptr = dataout; ptr += ELX_LOOPBACK_HEADER_SZ; sg_copy_to_buffer(job->request_payload.sg_list, job->request_payload.sg_cnt, ptr, size); rc = lpfcdiag_loop_self_reg(phba, &rpi); if (rc) goto loopback_test_exit; if (phba->sli_rev < LPFC_SLI_REV4) { rc = lpfcdiag_loop_get_xri(phba, rpi, &txxri, &rxxri); if (rc) { lpfcdiag_loop_self_unreg(phba, rpi); goto loopback_test_exit; } rc = lpfcdiag_sli3_loop_post_rxbufs(phba, rxxri, full_size); if (rc) { lpfcdiag_loop_self_unreg(phba, rpi); goto loopback_test_exit; } } evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid, SLI_CT_ELX_LOOPBACK); if (!evt) { lpfcdiag_loop_self_unreg(phba, rpi); rc = -ENOMEM; goto loopback_test_exit; } spin_lock_irqsave(&phba->ct_ev_lock, flags); list_add(&evt->node, &phba->ct_ev_waiters); lpfc_bsg_event_ref(evt); spin_unlock_irqrestore(&phba->ct_ev_lock, flags); cmdiocbq = lpfc_sli_get_iocbq(phba); if (phba->sli_rev < LPFC_SLI_REV4) rspiocbq = lpfc_sli_get_iocbq(phba); txbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (txbmp) { txbmp->virt = lpfc_mbuf_alloc(phba, 0, &txbmp->phys); if (txbmp->virt) { INIT_LIST_HEAD(&txbmp->list); txbpl = (struct ulp_bde64 *) txbmp->virt; txbuffer = diag_cmd_data_alloc(phba, txbpl, full_size, 0); } } if (!cmdiocbq || !txbmp || !txbpl || !txbuffer || !txbmp->virt) { rc = -ENOMEM; goto err_loopback_test_exit; } if ((phba->sli_rev < LPFC_SLI_REV4) && !rspiocbq) { rc = -ENOMEM; goto err_loopback_test_exit; } cmdwqe = &cmdiocbq->wqe; memset(cmdwqe, 0, sizeof(*cmdwqe)); if (phba->sli_rev < LPFC_SLI_REV4) { rspwqe = &rspiocbq->wqe; memset(rspwqe, 0, sizeof(*rspwqe)); } INIT_LIST_HEAD(&head); list_add_tail(&head, &txbuffer->dma.list); list_for_each_entry(curr, &head, list) { segment_len = ((struct lpfc_dmabufext *)curr)->size; if (current_offset == 0) { ctreq = curr->virt; memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ); ctreq->RevisionId.bits.Revision = SLI_CT_REVISION; ctreq->RevisionId.bits.InId = 0; ctreq->FsType = SLI_CT_ELX_LOOPBACK; ctreq->FsSubType = 0; ctreq->CommandResponse.bits.CmdRsp = cpu_to_be16(ELX_LOOPBACK_DATA); ctreq->CommandResponse.bits.Size = cpu_to_be16(size); segment_offset = ELX_LOOPBACK_HEADER_SZ; } else segment_offset = 0; BUG_ON(segment_offset >= segment_len); memcpy(curr->virt + segment_offset, ptr + current_offset, segment_len - segment_offset); current_offset += segment_len - segment_offset; BUG_ON(current_offset > size); } list_del(&head); /* Build the XMIT_SEQUENCE iocb */ num_bde = (uint32_t)txbuffer->flag; cmdiocbq->num_bdes = num_bde; cmdiocbq->cmd_flag |= LPFC_IO_LIBDFC; cmdiocbq->cmd_flag |= LPFC_IO_LOOPBACK; cmdiocbq->vport = phba->pport; cmdiocbq->cmd_cmpl = NULL; cmdiocbq->bpl_dmabuf = txbmp; if (phba->sli_rev < LPFC_SLI_REV4) { lpfc_sli_prep_xmit_seq64(phba, cmdiocbq, txbmp, 0, txxri, num_bde, FC_RCTL_DD_UNSOL_CTL, 1, CMD_XMIT_SEQUENCE64_CX); } else { lpfc_sli_prep_xmit_seq64(phba, cmdiocbq, txbmp, phba->sli4_hba.rpi_ids[rpi], 0xffff, full_size, FC_RCTL_DD_UNSOL_CTL, 1, CMD_XMIT_SEQUENCE64_WQE); cmdiocbq->sli4_xritag = NO_XRI; } iocb_stat = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq, rspiocbq, (phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT); if (iocb_stat != IOCB_SUCCESS || (phba->sli_rev < LPFC_SLI_REV4 && (get_job_ulpstatus(phba, rspiocbq) != IOSTAT_SUCCESS))) { lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "3126 Failed loopback test issue iocb: " "iocb_stat:x%x\n", iocb_stat); rc = -EIO; goto err_loopback_test_exit; } evt->waiting = 1; time_left = wait_event_interruptible_timeout( evt->wq, !list_empty(&evt->events_to_see), msecs_to_jiffies(1000 * ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT))); evt->waiting = 0; if (list_empty(&evt->events_to_see)) { rc = (time_left) ? -EINTR : -ETIMEDOUT; lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "3125 Not receiving unsolicited event, " "rc:x%x\n", rc); } else { spin_lock_irqsave(&phba->ct_ev_lock, flags); list_move(evt->events_to_see.prev, &evt->events_to_get); evdat = list_entry(evt->events_to_get.prev, typeof(*evdat), node); spin_unlock_irqrestore(&phba->ct_ev_lock, flags); rx_databuf = evdat->data; if (evdat->len != full_size) { lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "1603 Loopback test did not receive expected " "data length. actual length 0x%x expected " "length 0x%x\n", evdat->len, full_size); rc = -EIO; } else if (rx_databuf == NULL) rc = -EIO; else { rc = IOCB_SUCCESS; /* skip over elx loopback header */ rx_databuf += ELX_LOOPBACK_HEADER_SZ; bsg_reply->reply_payload_rcv_len = sg_copy_from_buffer(job->reply_payload.sg_list, job->reply_payload.sg_cnt, rx_databuf, size); bsg_reply->reply_payload_rcv_len = size; } } err_loopback_test_exit: lpfcdiag_loop_self_unreg(phba, rpi); spin_lock_irqsave(&phba->ct_ev_lock, flags); lpfc_bsg_event_unref(evt); /* release ref */ lpfc_bsg_event_unref(evt); /* delete */ spin_unlock_irqrestore(&phba->ct_ev_lock, flags); if ((cmdiocbq != NULL) && (iocb_stat != IOCB_TIMEDOUT)) lpfc_sli_release_iocbq(phba, cmdiocbq); if (rspiocbq != NULL) lpfc_sli_release_iocbq(phba, rspiocbq); if (txbmp != NULL) { if (txbpl != NULL) { if (txbuffer != NULL) diag_cmd_data_free(phba, txbuffer); lpfc_mbuf_free(phba, txbmp->virt, txbmp->phys); } kfree(txbmp); } loopback_test_exit: kfree(dataout); /* make error code available to userspace */ bsg_reply->result = rc; job->dd_data = NULL; /* complete the job back to userspace if no error */ if (rc == IOCB_SUCCESS) bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); return rc; } /** * lpfc_bsg_get_dfc_rev - process a GET_DFC_REV bsg vendor command * @job: GET_DFC_REV fc_bsg_job **/ static int lpfc_bsg_get_dfc_rev(struct bsg_job *job) { struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job)); struct fc_bsg_reply *bsg_reply = job->reply; struct lpfc_hba *phba = vport->phba; struct get_mgmt_rev_reply *event_reply; int rc = 0; if (job->request_len < sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev)) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2740 Received GET_DFC_REV request below " "minimum size\n"); rc = -EINVAL; goto job_error; } event_reply = (struct get_mgmt_rev_reply *) bsg_reply->reply_data.vendor_reply.vendor_rsp; if (job->reply_len < sizeof(*bsg_reply) + sizeof(*event_reply)) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2741 Received GET_DFC_REV reply below " "minimum size\n"); rc = -EINVAL; goto job_error; } event_reply->info.a_Major = MANAGEMENT_MAJOR_REV; event_reply->info.a_Minor = MANAGEMENT_MINOR_REV; job_error: bsg_reply->result = rc; if (rc == 0) bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); return rc; } /** * lpfc_bsg_issue_mbox_cmpl - lpfc_bsg_issue_mbox mbox completion handler * @phba: Pointer to HBA context object. * @pmboxq: Pointer to mailbox command. * * This is completion handler function for mailbox commands issued from * lpfc_bsg_issue_mbox function. This function is called by the * mailbox event handler function with no lock held. This function * will wake up thread waiting on the wait queue pointed by dd_data * of the mailbox. **/ static void lpfc_bsg_issue_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq) { struct bsg_job_data *dd_data; struct fc_bsg_reply *bsg_reply; struct bsg_job *job; uint32_t size; unsigned long flags; uint8_t *pmb, *pmb_buf; dd_data = pmboxq->ctx_u.dd_data; /* * The outgoing buffer is readily referred from the dma buffer, * just need to get header part from mailboxq structure. */ pmb = (uint8_t *)&pmboxq->u.mb; pmb_buf = (uint8_t *)dd_data->context_un.mbox.mb; memcpy(pmb_buf, pmb, sizeof(MAILBOX_t)); /* Determine if job has been aborted */ spin_lock_irqsave(&phba->ct_ev_lock, flags); job = dd_data->set_job; if (job) { /* Prevent timeout handling from trying to abort job */ job->dd_data = NULL; } spin_unlock_irqrestore(&phba->ct_ev_lock, flags); /* Copy the mailbox data to the job if it is still active */ if (job) { bsg_reply = job->reply; size = job->reply_payload.payload_len; bsg_reply->reply_payload_rcv_len = sg_copy_from_buffer(job->reply_payload.sg_list, job->reply_payload.sg_cnt, pmb_buf, size); } dd_data->set_job = NULL; mempool_free(dd_data->context_un.mbox.pmboxq, phba->mbox_mem_pool); lpfc_bsg_dma_page_free(phba, dd_data->context_un.mbox.dmabuffers); kfree(dd_data); /* Complete the job if the job is still active */ if (job) { bsg_reply->result = 0; bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); } return; } /** * lpfc_bsg_check_cmd_access - test for a supported mailbox command * @phba: Pointer to HBA context object. * @mb: Pointer to a mailbox object. * @vport: Pointer to a vport object. * * Some commands require the port to be offline, some may not be called from * the application. **/ static int lpfc_bsg_check_cmd_access(struct lpfc_hba *phba, MAILBOX_t *mb, struct lpfc_vport *vport) { /* return negative error values for bsg job */ switch (mb->mbxCommand) { /* Offline only */ case MBX_INIT_LINK: case MBX_DOWN_LINK: case MBX_CONFIG_LINK: case MBX_CONFIG_RING: case MBX_RESET_RING: case MBX_UNREG_LOGIN: case MBX_CLEAR_LA: case MBX_DUMP_CONTEXT: case MBX_RUN_DIAGS: case MBX_RESTART: case MBX_SET_MASK: if (!test_bit(FC_OFFLINE_MODE, &vport->fc_flag)) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2743 Command 0x%x is illegal in on-line " "state\n", mb->mbxCommand); return -EPERM; } break; case MBX_WRITE_NV: case MBX_WRITE_VPARMS: case MBX_LOAD_SM: case MBX_READ_NV: case MBX_READ_CONFIG: case MBX_READ_RCONFIG: case MBX_READ_STATUS: case MBX_READ_XRI: case MBX_READ_REV: case MBX_READ_LNK_STAT: case MBX_DUMP_MEMORY: case MBX_DOWN_LOAD: case MBX_UPDATE_CFG: case MBX_KILL_BOARD: case MBX_READ_TOPOLOGY: case MBX_LOAD_AREA: case MBX_LOAD_EXP_ROM: case MBX_BEACON: case MBX_DEL_LD_ENTRY: case MBX_SET_DEBUG: case MBX_WRITE_WWN: case MBX_SLI4_CONFIG: case MBX_READ_EVENT_LOG: case MBX_READ_EVENT_LOG_STATUS: case MBX_WRITE_EVENT_LOG: case MBX_PORT_CAPABILITIES: case MBX_PORT_IOV_CONTROL: case MBX_RUN_BIU_DIAG64: break; case MBX_SET_VARIABLE: lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "1226 mbox: set_variable 0x%x, 0x%x\n", mb->un.varWords[0], mb->un.varWords[1]); break; case MBX_READ_SPARM64: case MBX_REG_LOGIN: case MBX_REG_LOGIN64: case MBX_CONFIG_PORT: case MBX_RUN_BIU_DIAG: default: lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2742 Unknown Command 0x%x\n", mb->mbxCommand); return -EPERM; } return 0; /* ok */ } /** * lpfc_bsg_mbox_ext_session_reset - clean up context of multi-buffer mbox session * @phba: Pointer to HBA context object. * * This is routine clean up and reset BSG handling of multi-buffer mbox * command session. **/ static void lpfc_bsg_mbox_ext_session_reset(struct lpfc_hba *phba) { if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_IDLE) return; /* free all memory, including dma buffers */ lpfc_bsg_dma_page_list_free(phba, &phba->mbox_ext_buf_ctx.ext_dmabuf_list); lpfc_bsg_dma_page_free(phba, phba->mbox_ext_buf_ctx.mbx_dmabuf); /* multi-buffer write mailbox command pass-through complete */ memset((char *)&phba->mbox_ext_buf_ctx, 0, sizeof(struct lpfc_mbox_ext_buf_ctx)); INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list); return; } /** * lpfc_bsg_issue_mbox_ext_handle_job - job handler for multi-buffer mbox cmpl * @phba: Pointer to HBA context object. * @pmboxq: Pointer to mailbox command. * * This is routine handles BSG job for mailbox commands completions with * multiple external buffers. **/ static struct bsg_job * lpfc_bsg_issue_mbox_ext_handle_job(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq) { struct bsg_job_data *dd_data; struct bsg_job *job; struct fc_bsg_reply *bsg_reply; uint8_t *pmb, *pmb_buf; unsigned long flags; uint32_t size; int rc = 0; struct lpfc_dmabuf *dmabuf; struct lpfc_sli_config_mbox *sli_cfg_mbx; uint8_t *pmbx; dd_data = pmboxq->ctx_u.dd_data; /* Determine if job has been aborted */ spin_lock_irqsave(&phba->ct_ev_lock, flags); job = dd_data->set_job; if (job) { bsg_reply = job->reply; /* Prevent timeout handling from trying to abort job */ job->dd_data = NULL; } spin_unlock_irqrestore(&phba->ct_ev_lock, flags); /* * The outgoing buffer is readily referred from the dma buffer, * just need to get header part from mailboxq structure. */ pmb = (uint8_t *)&pmboxq->u.mb; pmb_buf = (uint8_t *)dd_data->context_un.mbox.mb; /* Copy the byte swapped response mailbox back to the user */ memcpy(pmb_buf, pmb, sizeof(MAILBOX_t)); /* if there is any non-embedded extended data copy that too */ dmabuf = phba->mbox_ext_buf_ctx.mbx_dmabuf; sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt; if (!bsg_bf_get(lpfc_mbox_hdr_emb, &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) { pmbx = (uint8_t *)dmabuf->virt; /* byte swap the extended data following the mailbox command */ lpfc_sli_pcimem_bcopy(&pmbx[sizeof(MAILBOX_t)], &pmbx[sizeof(MAILBOX_t)], sli_cfg_mbx->un.sli_config_emb0_subsys.mse[0].buf_len); } /* Complete the job if the job is still active */ if (job) { size = job->reply_payload.payload_len; bsg_reply->reply_payload_rcv_len = sg_copy_from_buffer(job->reply_payload.sg_list, job->reply_payload.sg_cnt, pmb_buf, size); /* result for successful */ bsg_reply->result = 0; lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2937 SLI_CONFIG ext-buffer mailbox command " "(x%x/x%x) complete bsg job done, bsize:%d\n", phba->mbox_ext_buf_ctx.nembType, phba->mbox_ext_buf_ctx.mboxType, size); lpfc_idiag_mbxacc_dump_bsg_mbox(phba, phba->mbox_ext_buf_ctx.nembType, phba->mbox_ext_buf_ctx.mboxType, dma_ebuf, sta_pos_addr, phba->mbox_ext_buf_ctx.mbx_dmabuf, 0); } else { lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "2938 SLI_CONFIG ext-buffer mailbox " "command (x%x/x%x) failure, rc:x%x\n", phba->mbox_ext_buf_ctx.nembType, phba->mbox_ext_buf_ctx.mboxType, rc); } /* state change */ phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_DONE; kfree(dd_data); return job; } /** * lpfc_bsg_issue_read_mbox_ext_cmpl - compl handler for multi-buffer read mbox * @phba: Pointer to HBA context object. * @pmboxq: Pointer to mailbox command. * * This is completion handler function for mailbox read commands with multiple * external buffers. **/ static void lpfc_bsg_issue_read_mbox_ext_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq) { struct bsg_job *job; struct fc_bsg_reply *bsg_reply; job = lpfc_bsg_issue_mbox_ext_handle_job(phba, pmboxq); /* handle the BSG job with mailbox command */ if (!job) pmboxq->u.mb.mbxStatus = MBXERR_ERROR; lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2939 SLI_CONFIG ext-buffer rd mailbox command " "complete, ctxState:x%x, mbxStatus:x%x\n", phba->mbox_ext_buf_ctx.state, pmboxq->u.mb.mbxStatus); if (pmboxq->u.mb.mbxStatus || phba->mbox_ext_buf_ctx.numBuf == 1) lpfc_bsg_mbox_ext_session_reset(phba); /* free base driver mailbox structure memory */ mempool_free(pmboxq, phba->mbox_mem_pool); /* if the job is still active, call job done */ if (job) { bsg_reply = job->reply; bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); } return; } /** * lpfc_bsg_issue_write_mbox_ext_cmpl - cmpl handler for multi-buffer write mbox * @phba: Pointer to HBA context object. * @pmboxq: Pointer to mailbox command. * * This is completion handler function for mailbox write commands with multiple * external buffers. **/ static void lpfc_bsg_issue_write_mbox_ext_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq) { struct bsg_job *job; struct fc_bsg_reply *bsg_reply; job = lpfc_bsg_issue_mbox_ext_handle_job(phba, pmboxq); /* handle the BSG job with the mailbox command */ if (!job) pmboxq->u.mb.mbxStatus = MBXERR_ERROR; lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2940 SLI_CONFIG ext-buffer wr mailbox command " "complete, ctxState:x%x, mbxStatus:x%x\n", phba->mbox_ext_buf_ctx.state, pmboxq->u.mb.mbxStatus); /* free all memory, including dma buffers */ mempool_free(pmboxq, phba->mbox_mem_pool); lpfc_bsg_mbox_ext_session_reset(phba); /* if the job is still active, call job done */ if (job) { bsg_reply = job->reply; bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); } return; } static void lpfc_bsg_sli_cfg_dma_desc_setup(struct lpfc_hba *phba, enum nemb_type nemb_tp, uint32_t index, struct lpfc_dmabuf *mbx_dmabuf, struct lpfc_dmabuf *ext_dmabuf) { struct lpfc_sli_config_mbox *sli_cfg_mbx; /* pointer to the start of mailbox command */ sli_cfg_mbx = (struct lpfc_sli_config_mbox *)mbx_dmabuf->virt; if (nemb_tp == nemb_mse) { if (index == 0) { sli_cfg_mbx->un.sli_config_emb0_subsys. mse[index].pa_hi = putPaddrHigh(mbx_dmabuf->phys + sizeof(MAILBOX_t)); sli_cfg_mbx->un.sli_config_emb0_subsys. mse[index].pa_lo = putPaddrLow(mbx_dmabuf->phys + sizeof(MAILBOX_t)); lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2943 SLI_CONFIG(mse)[%d], " "bufLen:%d, addrHi:x%x, addrLo:x%x\n", index, sli_cfg_mbx->un.sli_config_emb0_subsys. mse[index].buf_len, sli_cfg_mbx->un.sli_config_emb0_subsys. mse[index].pa_hi, sli_cfg_mbx->un.sli_config_emb0_subsys. mse[index].pa_lo); } else { sli_cfg_mbx->un.sli_config_emb0_subsys. mse[index].pa_hi = putPaddrHigh(ext_dmabuf->phys); sli_cfg_mbx->un.sli_config_emb0_subsys. mse[index].pa_lo = putPaddrLow(ext_dmabuf->phys); lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2944 SLI_CONFIG(mse)[%d], " "bufLen:%d, addrHi:x%x, addrLo:x%x\n", index, sli_cfg_mbx->un.sli_config_emb0_subsys. mse[index].buf_len, sli_cfg_mbx->un.sli_config_emb0_subsys. mse[index].pa_hi, sli_cfg_mbx->un.sli_config_emb0_subsys. mse[index].pa_lo); } } else { if (index == 0) { sli_cfg_mbx->un.sli_config_emb1_subsys. hbd[index].pa_hi = putPaddrHigh(mbx_dmabuf->phys + sizeof(MAILBOX_t)); sli_cfg_mbx->un.sli_config_emb1_subsys. hbd[index].pa_lo = putPaddrLow(mbx_dmabuf->phys + sizeof(MAILBOX_t)); lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "3007 SLI_CONFIG(hbd)[%d], " "bufLen:%d, addrHi:x%x, addrLo:x%x\n", index, bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len, &sli_cfg_mbx->un. sli_config_emb1_subsys.hbd[index]), sli_cfg_mbx->un.sli_config_emb1_subsys. hbd[index].pa_hi, sli_cfg_mbx->un.sli_config_emb1_subsys. hbd[index].pa_lo); } else { sli_cfg_mbx->un.sli_config_emb1_subsys. hbd[index].pa_hi = putPaddrHigh(ext_dmabuf->phys); sli_cfg_mbx->un.sli_config_emb1_subsys. hbd[index].pa_lo = putPaddrLow(ext_dmabuf->phys); lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "3008 SLI_CONFIG(hbd)[%d], " "bufLen:%d, addrHi:x%x, addrLo:x%x\n", index, bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len, &sli_cfg_mbx->un. sli_config_emb1_subsys.hbd[index]), sli_cfg_mbx->un.sli_config_emb1_subsys. hbd[index].pa_hi, sli_cfg_mbx->un.sli_config_emb1_subsys. hbd[index].pa_lo); } } return; } /** * lpfc_bsg_sli_cfg_read_cmd_ext - sli_config non-embedded mailbox cmd read * @phba: Pointer to HBA context object. * @job: Pointer to the job object. * @nemb_tp: Enumerate of non-embedded mailbox command type. * @dmabuf: Pointer to a DMA buffer descriptor. * * This routine performs SLI_CONFIG (0x9B) read mailbox command operation with * non-embedded external buffers. **/ static int lpfc_bsg_sli_cfg_read_cmd_ext(struct lpfc_hba *phba, struct bsg_job *job, enum nemb_type nemb_tp, struct lpfc_dmabuf *dmabuf) { struct fc_bsg_request *bsg_request = job->request; struct lpfc_sli_config_mbox *sli_cfg_mbx; struct dfc_mbox_req *mbox_req; struct lpfc_dmabuf *curr_dmabuf, *next_dmabuf; uint32_t ext_buf_cnt, ext_buf_index; struct lpfc_dmabuf *ext_dmabuf = NULL; struct bsg_job_data *dd_data = NULL; LPFC_MBOXQ_t *pmboxq = NULL; MAILBOX_t *pmb; uint8_t *pmbx; int rc, i; mbox_req = (struct dfc_mbox_req *)bsg_request->rqst_data.h_vendor.vendor_cmd; /* pointer to the start of mailbox command */ sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt; if (nemb_tp == nemb_mse) { ext_buf_cnt = bsg_bf_get(lpfc_mbox_hdr_mse_cnt, &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr); if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_MSE) { lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "2945 Handled SLI_CONFIG(mse) rd, " "ext_buf_cnt(%d) out of range(%d)\n", ext_buf_cnt, LPFC_MBX_SLI_CONFIG_MAX_MSE); rc = -ERANGE; goto job_error; } lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2941 Handled SLI_CONFIG(mse) rd, " "ext_buf_cnt:%d\n", ext_buf_cnt); } else { /* sanity check on interface type for support */ if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) < LPFC_SLI_INTF_IF_TYPE_2) { rc = -ENODEV; goto job_error; } /* nemb_tp == nemb_hbd */ ext_buf_cnt = sli_cfg_mbx->un.sli_config_emb1_subsys.hbd_count; if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_HBD) { lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "2946 Handled SLI_CONFIG(hbd) rd, " "ext_buf_cnt(%d) out of range(%d)\n", ext_buf_cnt, LPFC_MBX_SLI_CONFIG_MAX_HBD); rc = -ERANGE; goto job_error; } lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2942 Handled SLI_CONFIG(hbd) rd, " "ext_buf_cnt:%d\n", ext_buf_cnt); } /* before dma descriptor setup */ lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_rd, dma_mbox, sta_pre_addr, dmabuf, ext_buf_cnt); /* reject non-embedded mailbox command with none external buffer */ if (ext_buf_cnt == 0) { rc = -EPERM; goto job_error; } else if (ext_buf_cnt > 1) { /* additional external read buffers */ for (i = 1; i < ext_buf_cnt; i++) { ext_dmabuf = lpfc_bsg_dma_page_alloc(phba); if (!ext_dmabuf) { rc = -ENOMEM; goto job_error; } list_add_tail(&ext_dmabuf->list, &phba->mbox_ext_buf_ctx.ext_dmabuf_list); } } /* bsg tracking structure */ dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); if (!dd_data) { rc = -ENOMEM; goto job_error; } /* mailbox command structure for base driver */ pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmboxq) { rc = -ENOMEM; goto job_error; } memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t)); /* for the first external buffer */ lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, 0, dmabuf, dmabuf); /* for the rest of external buffer descriptors if any */ if (ext_buf_cnt > 1) { ext_buf_index = 1; list_for_each_entry_safe(curr_dmabuf, next_dmabuf, &phba->mbox_ext_buf_ctx.ext_dmabuf_list, list) { lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, ext_buf_index, dmabuf, curr_dmabuf); ext_buf_index++; } } /* after dma descriptor setup */ lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_rd, dma_mbox, sta_pos_addr, dmabuf, ext_buf_cnt); /* construct base driver mbox command */ pmb = &pmboxq->u.mb; pmbx = (uint8_t *)dmabuf->virt; memcpy(pmb, pmbx, sizeof(*pmb)); pmb->mbxOwner = OWN_HOST; pmboxq->vport = phba->pport; /* multi-buffer handling context */ phba->mbox_ext_buf_ctx.nembType = nemb_tp; phba->mbox_ext_buf_ctx.mboxType = mbox_rd; phba->mbox_ext_buf_ctx.numBuf = ext_buf_cnt; phba->mbox_ext_buf_ctx.mbxTag = mbox_req->extMboxTag; phba->mbox_ext_buf_ctx.seqNum = mbox_req->extSeqNum; phba->mbox_ext_buf_ctx.mbx_dmabuf = dmabuf; /* callback for multi-buffer read mailbox command */ pmboxq->mbox_cmpl = lpfc_bsg_issue_read_mbox_ext_cmpl; /* context fields to callback function */ pmboxq->ctx_u.dd_data = dd_data; dd_data->type = TYPE_MBOX; dd_data->set_job = job; dd_data->context_un.mbox.pmboxq = pmboxq; dd_data->context_un.mbox.mb = (MAILBOX_t *)pmbx; job->dd_data = dd_data; /* state change */ phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT; /* * Non-embedded mailbox subcommand data gets byte swapped here because * the lower level driver code only does the first 64 mailbox words. */ if ((!bsg_bf_get(lpfc_mbox_hdr_emb, &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) && (nemb_tp == nemb_mse)) lpfc_sli_pcimem_bcopy(&pmbx[sizeof(MAILBOX_t)], &pmbx[sizeof(MAILBOX_t)], sli_cfg_mbx->un.sli_config_emb0_subsys. mse[0].buf_len); rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT); if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) { lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2947 Issued SLI_CONFIG ext-buffer " "mailbox command, rc:x%x\n", rc); return SLI_CONFIG_HANDLED; } lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "2948 Failed to issue SLI_CONFIG ext-buffer " "mailbox command, rc:x%x\n", rc); rc = -EPIPE; job_error: if (pmboxq) mempool_free(pmboxq, phba->mbox_mem_pool); lpfc_bsg_dma_page_list_free(phba, &phba->mbox_ext_buf_ctx.ext_dmabuf_list); kfree(dd_data); phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_IDLE; return rc; } /** * lpfc_bsg_sli_cfg_write_cmd_ext - sli_config non-embedded mailbox cmd write * @phba: Pointer to HBA context object. * @job: Pointer to the job object. * @nemb_tp: Enumerate of non-embedded mailbox command type. * @dmabuf: Pointer to a DMA buffer descriptor. * * This routine performs SLI_CONFIG (0x9B) write mailbox command operation with * non-embedded external buffers. **/ static int lpfc_bsg_sli_cfg_write_cmd_ext(struct lpfc_hba *phba, struct bsg_job *job, enum nemb_type nemb_tp, struct lpfc_dmabuf *dmabuf) { struct fc_bsg_request *bsg_request = job->request; struct fc_bsg_reply *bsg_reply = job->reply; struct dfc_mbox_req *mbox_req; struct lpfc_sli_config_mbox *sli_cfg_mbx; uint32_t ext_buf_cnt; struct bsg_job_data *dd_data = NULL; LPFC_MBOXQ_t *pmboxq = NULL; MAILBOX_t *pmb; uint8_t *mbx; int rc = SLI_CONFIG_NOT_HANDLED, i; mbox_req = (struct dfc_mbox_req *)bsg_request->rqst_data.h_vendor.vendor_cmd; /* pointer to the start of mailbox command */ sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt; if (nemb_tp == nemb_mse) { ext_buf_cnt = bsg_bf_get(lpfc_mbox_hdr_mse_cnt, &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr); if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_MSE) { lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "2953 Failed SLI_CONFIG(mse) wr, " "ext_buf_cnt(%d) out of range(%d)\n", ext_buf_cnt, LPFC_MBX_SLI_CONFIG_MAX_MSE); return -ERANGE; } lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2949 Handled SLI_CONFIG(mse) wr, " "ext_buf_cnt:%d\n", ext_buf_cnt); } else { /* sanity check on interface type for support */ if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) < LPFC_SLI_INTF_IF_TYPE_2) return -ENODEV; /* nemb_tp == nemb_hbd */ ext_buf_cnt = sli_cfg_mbx->un.sli_config_emb1_subsys.hbd_count; if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_HBD) { lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "2954 Failed SLI_CONFIG(hbd) wr, " "ext_buf_cnt(%d) out of range(%d)\n", ext_buf_cnt, LPFC_MBX_SLI_CONFIG_MAX_HBD); return -ERANGE; } lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2950 Handled SLI_CONFIG(hbd) wr, " "ext_buf_cnt:%d\n", ext_buf_cnt); } /* before dma buffer descriptor setup */ lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_wr, dma_mbox, sta_pre_addr, dmabuf, ext_buf_cnt); if (ext_buf_cnt == 0) return -EPERM; /* for the first external buffer */ lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, 0, dmabuf, dmabuf); /* after dma descriptor setup */ lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_wr, dma_mbox, sta_pos_addr, dmabuf, ext_buf_cnt); /* log for looking forward */ for (i = 1; i < ext_buf_cnt; i++) { if (nemb_tp == nemb_mse) lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2951 SLI_CONFIG(mse), buf[%d]-length:%d\n", i, sli_cfg_mbx->un.sli_config_emb0_subsys. mse[i].buf_len); else lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2952 SLI_CONFIG(hbd), buf[%d]-length:%d\n", i, bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len, &sli_cfg_mbx->un.sli_config_emb1_subsys. hbd[i])); } /* multi-buffer handling context */ phba->mbox_ext_buf_ctx.nembType = nemb_tp; phba->mbox_ext_buf_ctx.mboxType = mbox_wr; phba->mbox_ext_buf_ctx.numBuf = ext_buf_cnt; phba->mbox_ext_buf_ctx.mbxTag = mbox_req->extMboxTag; phba->mbox_ext_buf_ctx.seqNum = mbox_req->extSeqNum; phba->mbox_ext_buf_ctx.mbx_dmabuf = dmabuf; if (ext_buf_cnt == 1) { /* bsg tracking structure */ dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); if (!dd_data) { rc = -ENOMEM; goto job_error; } /* mailbox command structure for base driver */ pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmboxq) { rc = -ENOMEM; goto job_error; } memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t)); pmb = &pmboxq->u.mb; mbx = (uint8_t *)dmabuf->virt; memcpy(pmb, mbx, sizeof(*pmb)); pmb->mbxOwner = OWN_HOST; pmboxq->vport = phba->pport; /* callback for multi-buffer read mailbox command */ pmboxq->mbox_cmpl = lpfc_bsg_issue_write_mbox_ext_cmpl; /* context fields to callback function */ pmboxq->ctx_u.dd_data = dd_data; dd_data->type = TYPE_MBOX; dd_data->set_job = job; dd_data->context_un.mbox.pmboxq = pmboxq; dd_data->context_un.mbox.mb = (MAILBOX_t *)mbx; job->dd_data = dd_data; /* state change */ phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT; rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT); if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) { lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2955 Issued SLI_CONFIG ext-buffer " "mailbox command, rc:x%x\n", rc); return SLI_CONFIG_HANDLED; } lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "2956 Failed to issue SLI_CONFIG ext-buffer " "mailbox command, rc:x%x\n", rc); rc = -EPIPE; goto job_error; } /* wait for additional external buffers */ bsg_reply->result = 0; bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); return SLI_CONFIG_HANDLED; job_error: if (pmboxq) mempool_free(pmboxq, phba->mbox_mem_pool); kfree(dd_data); return rc; } /** * lpfc_bsg_handle_sli_cfg_mbox - handle sli-cfg mailbox cmd with ext buffer * @phba: Pointer to HBA context object. * @job: Pointer to the job object. * @dmabuf: Pointer to a DMA buffer descriptor. * * This routine handles SLI_CONFIG (0x9B) mailbox command with non-embedded * external buffers, including both 0x9B with non-embedded MSEs and 0x9B * with embedded subsystem 0x1 and opcodes with external HBDs. **/ static int lpfc_bsg_handle_sli_cfg_mbox(struct lpfc_hba *phba, struct bsg_job *job, struct lpfc_dmabuf *dmabuf) { struct lpfc_sli_config_mbox *sli_cfg_mbx; uint32_t subsys; uint32_t opcode; int rc = SLI_CONFIG_NOT_HANDLED; /* state change on new multi-buffer pass-through mailbox command */ phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_HOST; sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt; if (!bsg_bf_get(lpfc_mbox_hdr_emb, &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) { subsys = bsg_bf_get(lpfc_emb0_subcmnd_subsys, &sli_cfg_mbx->un.sli_config_emb0_subsys); opcode = bsg_bf_get(lpfc_emb0_subcmnd_opcode, &sli_cfg_mbx->un.sli_config_emb0_subsys); if (subsys == SLI_CONFIG_SUBSYS_FCOE) { switch (opcode) { case FCOE_OPCODE_READ_FCF: case FCOE_OPCODE_GET_DPORT_RESULTS: lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2957 Handled SLI_CONFIG " "subsys_fcoe, opcode:x%x\n", opcode); rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job, nemb_mse, dmabuf); break; case FCOE_OPCODE_ADD_FCF: case FCOE_OPCODE_SET_DPORT_MODE: case LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE: lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2958 Handled SLI_CONFIG " "subsys_fcoe, opcode:x%x\n", opcode); rc = lpfc_bsg_sli_cfg_write_cmd_ext(phba, job, nemb_mse, dmabuf); break; default: lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2959 Reject SLI_CONFIG " "subsys_fcoe, opcode:x%x\n", opcode); rc = -EPERM; break; } } else if (subsys == SLI_CONFIG_SUBSYS_COMN) { switch (opcode) { case COMN_OPCODE_GET_CNTL_ADDL_ATTRIBUTES: case COMN_OPCODE_GET_CNTL_ATTRIBUTES: case COMN_OPCODE_GET_PROFILE_CONFIG: case COMN_OPCODE_SET_FEATURES: lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "3106 Handled SLI_CONFIG " "subsys_comn, opcode:x%x\n", opcode); rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job, nemb_mse, dmabuf); break; default: lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "3107 Reject SLI_CONFIG " "subsys_comn, opcode:x%x\n", opcode); rc = -EPERM; break; } } else { lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2977 Reject SLI_CONFIG " "subsys:x%d, opcode:x%x\n", subsys, opcode); rc = -EPERM; } } else { subsys = bsg_bf_get(lpfc_emb1_subcmnd_subsys, &sli_cfg_mbx->un.sli_config_emb1_subsys); opcode = bsg_bf_get(lpfc_emb1_subcmnd_opcode, &sli_cfg_mbx->un.sli_config_emb1_subsys); if (subsys == SLI_CONFIG_SUBSYS_COMN) { switch (opcode) { case COMN_OPCODE_READ_OBJECT: case COMN_OPCODE_READ_OBJECT_LIST: lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2960 Handled SLI_CONFIG " "subsys_comn, opcode:x%x\n", opcode); rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job, nemb_hbd, dmabuf); break; case COMN_OPCODE_WRITE_OBJECT: lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2961 Handled SLI_CONFIG " "subsys_comn, opcode:x%x\n", opcode); rc = lpfc_bsg_sli_cfg_write_cmd_ext(phba, job, nemb_hbd, dmabuf); break; default: lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2962 Not handled SLI_CONFIG " "subsys_comn, opcode:x%x\n", opcode); rc = SLI_CONFIG_NOT_HANDLED; break; } } else { lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2978 Not handled SLI_CONFIG " "subsys:x%d, opcode:x%x\n", subsys, opcode); rc = SLI_CONFIG_NOT_HANDLED; } } /* state reset on not handled new multi-buffer mailbox command */ if (rc != SLI_CONFIG_HANDLED) phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_IDLE; return rc; } /** * lpfc_bsg_mbox_ext_abort - request to abort mbox command with ext buffers * @phba: Pointer to HBA context object. * * This routine is for requesting to abort a pass-through mailbox command with * multiple external buffers due to error condition. **/ static void lpfc_bsg_mbox_ext_abort(struct lpfc_hba *phba) { if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_PORT) phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_ABTS; else lpfc_bsg_mbox_ext_session_reset(phba); return; } /** * lpfc_bsg_read_ebuf_get - get the next mailbox read external buffer * @phba: Pointer to HBA context object. * @job: Pointer to the job object. * * This routine extracts the next mailbox read external buffer back to * user space through BSG. **/ static int lpfc_bsg_read_ebuf_get(struct lpfc_hba *phba, struct bsg_job *job) { struct fc_bsg_reply *bsg_reply = job->reply; struct lpfc_sli_config_mbox *sli_cfg_mbx; struct lpfc_dmabuf *dmabuf; uint8_t *pbuf; uint32_t size; uint32_t index; index = phba->mbox_ext_buf_ctx.seqNum; phba->mbox_ext_buf_ctx.seqNum++; sli_cfg_mbx = (struct lpfc_sli_config_mbox *) phba->mbox_ext_buf_ctx.mbx_dmabuf->virt; if (phba->mbox_ext_buf_ctx.nembType == nemb_mse) { size = bsg_bf_get(lpfc_mbox_sli_config_mse_len, &sli_cfg_mbx->un.sli_config_emb0_subsys.mse[index]); lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2963 SLI_CONFIG (mse) ext-buffer rd get " "buffer[%d], size:%d\n", index, size); } else { size = bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len, &sli_cfg_mbx->un.sli_config_emb1_subsys.hbd[index]); lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2964 SLI_CONFIG (hbd) ext-buffer rd get " "buffer[%d], size:%d\n", index, size); } if (list_empty(&phba->mbox_ext_buf_ctx.ext_dmabuf_list)) return -EPIPE; dmabuf = list_first_entry(&phba->mbox_ext_buf_ctx.ext_dmabuf_list, struct lpfc_dmabuf, list); list_del_init(&dmabuf->list); /* after dma buffer descriptor setup */ lpfc_idiag_mbxacc_dump_bsg_mbox(phba, phba->mbox_ext_buf_ctx.nembType, mbox_rd, dma_ebuf, sta_pos_addr, dmabuf, index); pbuf = (uint8_t *)dmabuf->virt; bsg_reply->reply_payload_rcv_len = sg_copy_from_buffer(job->reply_payload.sg_list, job->reply_payload.sg_cnt, pbuf, size); lpfc_bsg_dma_page_free(phba, dmabuf); if (phba->mbox_ext_buf_ctx.seqNum == phba->mbox_ext_buf_ctx.numBuf) { lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2965 SLI_CONFIG (hbd) ext-buffer rd mbox " "command session done\n"); lpfc_bsg_mbox_ext_session_reset(phba); } bsg_reply->result = 0; bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); return SLI_CONFIG_HANDLED; } /** * lpfc_bsg_write_ebuf_set - set the next mailbox write external buffer * @phba: Pointer to HBA context object. * @job: Pointer to the job object. * @dmabuf: Pointer to a DMA buffer descriptor. * * This routine sets up the next mailbox read external buffer obtained * from user space through BSG. **/ static int lpfc_bsg_write_ebuf_set(struct lpfc_hba *phba, struct bsg_job *job, struct lpfc_dmabuf *dmabuf) { struct fc_bsg_reply *bsg_reply = job->reply; struct bsg_job_data *dd_data = NULL; LPFC_MBOXQ_t *pmboxq = NULL; MAILBOX_t *pmb; enum nemb_type nemb_tp; uint8_t *pbuf; uint32_t size; uint32_t index; int rc; index = phba->mbox_ext_buf_ctx.seqNum; phba->mbox_ext_buf_ctx.seqNum++; nemb_tp = phba->mbox_ext_buf_ctx.nembType; pbuf = (uint8_t *)dmabuf->virt; size = job->request_payload.payload_len; sg_copy_to_buffer(job->request_payload.sg_list, job->request_payload.sg_cnt, pbuf, size); if (phba->mbox_ext_buf_ctx.nembType == nemb_mse) { lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2966 SLI_CONFIG (mse) ext-buffer wr set " "buffer[%d], size:%d\n", phba->mbox_ext_buf_ctx.seqNum, size); } else { lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2967 SLI_CONFIG (hbd) ext-buffer wr set " "buffer[%d], size:%d\n", phba->mbox_ext_buf_ctx.seqNum, size); } /* set up external buffer descriptor and add to external buffer list */ lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, index, phba->mbox_ext_buf_ctx.mbx_dmabuf, dmabuf); list_add_tail(&dmabuf->list, &phba->mbox_ext_buf_ctx.ext_dmabuf_list); /* after write dma buffer */ lpfc_idiag_mbxacc_dump_bsg_mbox(phba, phba->mbox_ext_buf_ctx.nembType, mbox_wr, dma_ebuf, sta_pos_addr, dmabuf, index); if (phba->mbox_ext_buf_ctx.seqNum == phba->mbox_ext_buf_ctx.numBuf) { lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2968 SLI_CONFIG ext-buffer wr all %d " "ebuffers received\n", phba->mbox_ext_buf_ctx.numBuf); dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); if (!dd_data) { rc = -ENOMEM; goto job_error; } /* mailbox command structure for base driver */ pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmboxq) { rc = -ENOMEM; goto job_error; } memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t)); pbuf = (uint8_t *)phba->mbox_ext_buf_ctx.mbx_dmabuf->virt; pmb = &pmboxq->u.mb; memcpy(pmb, pbuf, sizeof(*pmb)); pmb->mbxOwner = OWN_HOST; pmboxq->vport = phba->pport; /* callback for multi-buffer write mailbox command */ pmboxq->mbox_cmpl = lpfc_bsg_issue_write_mbox_ext_cmpl; /* context fields to callback function */ pmboxq->ctx_u.dd_data = dd_data; dd_data->type = TYPE_MBOX; dd_data->set_job = job; dd_data->context_un.mbox.pmboxq = pmboxq; dd_data->context_un.mbox.mb = (MAILBOX_t *)pbuf; job->dd_data = dd_data; /* state change */ phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT; rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT); if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) { lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2969 Issued SLI_CONFIG ext-buffer " "mailbox command, rc:x%x\n", rc); return SLI_CONFIG_HANDLED; } lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "2970 Failed to issue SLI_CONFIG ext-buffer " "mailbox command, rc:x%x\n", rc); rc = -EPIPE; goto job_error; } /* wait for additional external buffers */ bsg_reply->result = 0; bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); return SLI_CONFIG_HANDLED; job_error: if (pmboxq) mempool_free(pmboxq, phba->mbox_mem_pool); lpfc_bsg_dma_page_free(phba, dmabuf); kfree(dd_data); return rc; } /** * lpfc_bsg_handle_sli_cfg_ebuf - handle ext buffer with sli-cfg mailbox cmd * @phba: Pointer to HBA context object. * @job: Pointer to the job object. * @dmabuf: Pointer to a DMA buffer descriptor. * * This routine handles the external buffer with SLI_CONFIG (0x9B) mailbox * command with multiple non-embedded external buffers. **/ static int lpfc_bsg_handle_sli_cfg_ebuf(struct lpfc_hba *phba, struct bsg_job *job, struct lpfc_dmabuf *dmabuf) { int rc; lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2971 SLI_CONFIG buffer (type:x%x)\n", phba->mbox_ext_buf_ctx.mboxType); if (phba->mbox_ext_buf_ctx.mboxType == mbox_rd) { if (phba->mbox_ext_buf_ctx.state != LPFC_BSG_MBOX_DONE) { lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "2972 SLI_CONFIG rd buffer state " "mismatch:x%x\n", phba->mbox_ext_buf_ctx.state); lpfc_bsg_mbox_ext_abort(phba); return -EPIPE; } rc = lpfc_bsg_read_ebuf_get(phba, job); if (rc == SLI_CONFIG_HANDLED) lpfc_bsg_dma_page_free(phba, dmabuf); } else { /* phba->mbox_ext_buf_ctx.mboxType == mbox_wr */ if (phba->mbox_ext_buf_ctx.state != LPFC_BSG_MBOX_HOST) { lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "2973 SLI_CONFIG wr buffer state " "mismatch:x%x\n", phba->mbox_ext_buf_ctx.state); lpfc_bsg_mbox_ext_abort(phba); return -EPIPE; } rc = lpfc_bsg_write_ebuf_set(phba, job, dmabuf); } return rc; } /** * lpfc_bsg_handle_sli_cfg_ext - handle sli-cfg mailbox with external buffer * @phba: Pointer to HBA context object. * @job: Pointer to the job object. * @dmabuf: Pointer to a DMA buffer descriptor. * * This routine checks and handles non-embedded multi-buffer SLI_CONFIG * (0x9B) mailbox commands and external buffers. **/ static int lpfc_bsg_handle_sli_cfg_ext(struct lpfc_hba *phba, struct bsg_job *job, struct lpfc_dmabuf *dmabuf) { struct fc_bsg_request *bsg_request = job->request; struct dfc_mbox_req *mbox_req; int rc = SLI_CONFIG_NOT_HANDLED; mbox_req = (struct dfc_mbox_req *)bsg_request->rqst_data.h_vendor.vendor_cmd; /* mbox command with/without single external buffer */ if (mbox_req->extMboxTag == 0 && mbox_req->extSeqNum == 0) return rc; /* mbox command and first external buffer */ if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_IDLE) { if (mbox_req->extSeqNum == 1) { lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2974 SLI_CONFIG mailbox: tag:%d, " "seq:%d\n", mbox_req->extMboxTag, mbox_req->extSeqNum); rc = lpfc_bsg_handle_sli_cfg_mbox(phba, job, dmabuf); return rc; } else goto sli_cfg_ext_error; } /* * handle additional external buffers */ /* check broken pipe conditions */ if (mbox_req->extMboxTag != phba->mbox_ext_buf_ctx.mbxTag) goto sli_cfg_ext_error; if (mbox_req->extSeqNum > phba->mbox_ext_buf_ctx.numBuf) goto sli_cfg_ext_error; if (mbox_req->extSeqNum != phba->mbox_ext_buf_ctx.seqNum + 1) goto sli_cfg_ext_error; lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2975 SLI_CONFIG mailbox external buffer: " "extSta:x%x, tag:%d, seq:%d\n", phba->mbox_ext_buf_ctx.state, mbox_req->extMboxTag, mbox_req->extSeqNum); rc = lpfc_bsg_handle_sli_cfg_ebuf(phba, job, dmabuf); return rc; sli_cfg_ext_error: /* all other cases, broken pipe */ lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "2976 SLI_CONFIG mailbox broken pipe: " "ctxSta:x%x, ctxNumBuf:%d " "ctxTag:%d, ctxSeq:%d, tag:%d, seq:%d\n", phba->mbox_ext_buf_ctx.state, phba->mbox_ext_buf_ctx.numBuf, phba->mbox_ext_buf_ctx.mbxTag, phba->mbox_ext_buf_ctx.seqNum, mbox_req->extMboxTag, mbox_req->extSeqNum); lpfc_bsg_mbox_ext_session_reset(phba); return -EPIPE; } /** * lpfc_bsg_issue_mbox - issues a mailbox command on behalf of an app * @phba: Pointer to HBA context object. * @job: Pointer to the job object. * @vport: Pointer to a vport object. * * Allocate a tracking object, mailbox command memory, get a mailbox * from the mailbox pool, copy the caller mailbox command. * * If offline and the sli is active we need to poll for the command (port is * being reset) and complete the job, otherwise issue the mailbox command and * let our completion handler finish the command. **/ static int lpfc_bsg_issue_mbox(struct lpfc_hba *phba, struct bsg_job *job, struct lpfc_vport *vport) { struct fc_bsg_request *bsg_request = job->request; struct fc_bsg_reply *bsg_reply = job->reply; LPFC_MBOXQ_t *pmboxq = NULL; /* internal mailbox queue */ MAILBOX_t *pmb; /* shortcut to the pmboxq mailbox */ /* a 4k buffer to hold the mb and extended data from/to the bsg */ uint8_t *pmbx = NULL; struct bsg_job_data *dd_data = NULL; /* bsg data tracking structure */ struct lpfc_dmabuf *dmabuf = NULL; struct dfc_mbox_req *mbox_req; struct READ_EVENT_LOG_VAR *rdEventLog; uint32_t transmit_length, receive_length, mode; struct lpfc_mbx_sli4_config *sli4_config; struct lpfc_mbx_nembed_cmd *nembed_sge; struct ulp_bde64 *bde; uint8_t *ext = NULL; int rc = 0; uint8_t *from; uint32_t size; /* in case no data is transferred */ bsg_reply->reply_payload_rcv_len = 0; /* sanity check to protect driver */ if (job->reply_payload.payload_len > BSG_MBOX_SIZE || job->request_payload.payload_len > BSG_MBOX_SIZE) { rc = -ERANGE; goto job_done; } /* * Don't allow mailbox commands to be sent when blocked or when in * the middle of discovery */ if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) { rc = -EAGAIN; goto job_done; } mbox_req = (struct dfc_mbox_req *)bsg_request->rqst_data.h_vendor.vendor_cmd; /* check if requested extended data lengths are valid */ if ((mbox_req->inExtWLen > BSG_MBOX_SIZE/sizeof(uint32_t)) || (mbox_req->outExtWLen > BSG_MBOX_SIZE/sizeof(uint32_t))) { rc = -ERANGE; goto job_done; } dmabuf = lpfc_bsg_dma_page_alloc(phba); if (!dmabuf || !dmabuf->virt) { rc = -ENOMEM; goto job_done; } /* Get the mailbox command or external buffer from BSG */ pmbx = (uint8_t *)dmabuf->virt; size = job->request_payload.payload_len; sg_copy_to_buffer(job->request_payload.sg_list, job->request_payload.sg_cnt, pmbx, size); /* Handle possible SLI_CONFIG with non-embedded payloads */ if (phba->sli_rev == LPFC_SLI_REV4) { rc = lpfc_bsg_handle_sli_cfg_ext(phba, job, dmabuf); if (rc == SLI_CONFIG_HANDLED) goto job_cont; if (rc) goto job_done; /* SLI_CONFIG_NOT_HANDLED for other mailbox commands */ } rc = lpfc_bsg_check_cmd_access(phba, (MAILBOX_t *)pmbx, vport); if (rc != 0) goto job_done; /* must be negative */ /* allocate our bsg tracking structure */ dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); if (!dd_data) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2727 Failed allocation of dd_data\n"); rc = -ENOMEM; goto job_done; } pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmboxq) { rc = -ENOMEM; goto job_done; } memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t)); pmb = &pmboxq->u.mb; memcpy(pmb, pmbx, sizeof(*pmb)); pmb->mbxOwner = OWN_HOST; pmboxq->vport = vport; /* If HBA encountered an error attention, allow only DUMP * or RESTART mailbox commands until the HBA is restarted. */ if (phba->pport->stopped && pmb->mbxCommand != MBX_DUMP_MEMORY && pmb->mbxCommand != MBX_RESTART && pmb->mbxCommand != MBX_WRITE_VPARMS && pmb->mbxCommand != MBX_WRITE_WWN) lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX, "2797 mbox: Issued mailbox cmd " "0x%x while in stopped state.\n", pmb->mbxCommand); /* extended mailbox commands will need an extended buffer */ if (mbox_req->inExtWLen || mbox_req->outExtWLen) { from = pmbx; ext = from + sizeof(MAILBOX_t); pmboxq->ext_buf = ext; pmboxq->in_ext_byte_len = mbox_req->inExtWLen * sizeof(uint32_t); pmboxq->out_ext_byte_len = mbox_req->outExtWLen * sizeof(uint32_t); pmboxq->mbox_offset_word = mbox_req->mbOffset; } /* biu diag will need a kernel buffer to transfer the data * allocate our own buffer and setup the mailbox command to * use ours */ if (pmb->mbxCommand == MBX_RUN_BIU_DIAG64) { transmit_length = pmb->un.varWords[1]; receive_length = pmb->un.varWords[4]; /* transmit length cannot be greater than receive length or * mailbox extension size */ if ((transmit_length > receive_length) || (transmit_length > BSG_MBOX_SIZE - sizeof(MAILBOX_t))) { rc = -ERANGE; goto job_done; } pmb->un.varBIUdiag.un.s2.xmit_bde64.addrHigh = putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t)); pmb->un.varBIUdiag.un.s2.xmit_bde64.addrLow = putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t)); pmb->un.varBIUdiag.un.s2.rcv_bde64.addrHigh = putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t) + pmb->un.varBIUdiag.un.s2.xmit_bde64.tus.f.bdeSize); pmb->un.varBIUdiag.un.s2.rcv_bde64.addrLow = putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t) + pmb->un.varBIUdiag.un.s2.xmit_bde64.tus.f.bdeSize); } else if (pmb->mbxCommand == MBX_READ_EVENT_LOG) { rdEventLog = &pmb->un.varRdEventLog; receive_length = rdEventLog->rcv_bde64.tus.f.bdeSize; mode = bf_get(lpfc_event_log, rdEventLog); /* receive length cannot be greater than mailbox * extension size */ if (receive_length > BSG_MBOX_SIZE - sizeof(MAILBOX_t)) { rc = -ERANGE; goto job_done; } /* mode zero uses a bde like biu diags command */ if (mode == 0) { pmb->un.varWords[3] = putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t)); pmb->un.varWords[4] = putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t)); } } else if (phba->sli_rev == LPFC_SLI_REV4) { /* Let type 4 (well known data) through because the data is * returned in varwords[4-8] * otherwise check the recieve length and fetch the buffer addr */ if ((pmb->mbxCommand == MBX_DUMP_MEMORY) && (pmb->un.varDmp.type != DMP_WELL_KNOWN)) { /* rebuild the command for sli4 using our own buffers * like we do for biu diags */ receive_length = pmb->un.varWords[2]; /* receive length cannot be greater than mailbox * extension size */ if (receive_length == 0) { rc = -ERANGE; goto job_done; } pmb->un.varWords[3] = putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t)); pmb->un.varWords[4] = putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t)); } else if ((pmb->mbxCommand == MBX_UPDATE_CFG) && pmb->un.varUpdateCfg.co) { bde = (struct ulp_bde64 *)&pmb->un.varWords[4]; /* bde size cannot be greater than mailbox ext size */ if (bde->tus.f.bdeSize > BSG_MBOX_SIZE - sizeof(MAILBOX_t)) { rc = -ERANGE; goto job_done; } bde->addrHigh = putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t)); bde->addrLow = putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t)); } else if (pmb->mbxCommand == MBX_SLI4_CONFIG) { /* Handling non-embedded SLI_CONFIG mailbox command */ sli4_config = &pmboxq->u.mqe.un.sli4_config; if (!bf_get(lpfc_mbox_hdr_emb, &sli4_config->header.cfg_mhdr)) { /* rebuild the command for sli4 using our * own buffers like we do for biu diags */ nembed_sge = (struct lpfc_mbx_nembed_cmd *) &pmb->un.varWords[0]; receive_length = nembed_sge->sge[0].length; /* receive length cannot be greater than * mailbox extension size */ if ((receive_length == 0) || (receive_length > BSG_MBOX_SIZE - sizeof(MAILBOX_t))) { rc = -ERANGE; goto job_done; } nembed_sge->sge[0].pa_hi = putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t)); nembed_sge->sge[0].pa_lo = putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t)); } } } dd_data->context_un.mbox.dmabuffers = dmabuf; /* setup wake call as IOCB callback */ pmboxq->mbox_cmpl = lpfc_bsg_issue_mbox_cmpl; /* setup context field to pass wait_queue pointer to wake function */ pmboxq->ctx_u.dd_data = dd_data; dd_data->type = TYPE_MBOX; dd_data->set_job = job; dd_data->context_un.mbox.pmboxq = pmboxq; dd_data->context_un.mbox.mb = (MAILBOX_t *)pmbx; dd_data->context_un.mbox.ext = ext; dd_data->context_un.mbox.mbOffset = mbox_req->mbOffset; dd_data->context_un.mbox.inExtWLen = mbox_req->inExtWLen; dd_data->context_un.mbox.outExtWLen = mbox_req->outExtWLen; job->dd_data = dd_data; if (test_bit(FC_OFFLINE_MODE, &vport->fc_flag) || (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) { rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL); if (rc != MBX_SUCCESS) { rc = (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV; goto job_done; } /* job finished, copy the data */ memcpy(pmbx, pmb, sizeof(*pmb)); bsg_reply->reply_payload_rcv_len = sg_copy_from_buffer(job->reply_payload.sg_list, job->reply_payload.sg_cnt, pmbx, size); /* not waiting mbox already done */ rc = 0; goto job_done; } rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT); if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) return 1; /* job started */ job_done: /* common exit for error or job completed inline */ if (pmboxq) mempool_free(pmboxq, phba->mbox_mem_pool); lpfc_bsg_dma_page_free(phba, dmabuf); kfree(dd_data); job_cont: return rc; } /** * lpfc_bsg_mbox_cmd - process an fc bsg LPFC_BSG_VENDOR_MBOX command * @job: MBOX fc_bsg_job for LPFC_BSG_VENDOR_MBOX. **/ static int lpfc_bsg_mbox_cmd(struct bsg_job *job) { struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job)); struct fc_bsg_request *bsg_request = job->request; struct fc_bsg_reply *bsg_reply = job->reply; struct lpfc_hba *phba = vport->phba; struct dfc_mbox_req *mbox_req; int rc = 0; /* mix-and-match backward compatibility */ bsg_reply->reply_payload_rcv_len = 0; if (job->request_len < sizeof(struct fc_bsg_request) + sizeof(struct dfc_mbox_req)) { lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, "2737 Mix-and-match backward compatibility " "between MBOX_REQ old size:%d and " "new request size:%d\n", (int)(job->request_len - sizeof(struct fc_bsg_request)), (int)sizeof(struct dfc_mbox_req)); mbox_req = (struct dfc_mbox_req *) bsg_request->rqst_data.h_vendor.vendor_cmd; mbox_req->extMboxTag = 0; mbox_req->extSeqNum = 0; } rc = lpfc_bsg_issue_mbox(phba, job, vport); if (rc == 0) { /* job done */ bsg_reply->result = 0; job->dd_data = NULL; bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); } else if (rc == 1) /* job submitted, will complete later*/ rc = 0; /* return zero, no error */ else { /* some error occurred */ bsg_reply->result = rc; job->dd_data = NULL; } return rc; } static int lpfc_forced_link_speed(struct bsg_job *job) { struct Scsi_Host *shost = fc_bsg_to_shost(job); struct lpfc_vport *vport = shost_priv(shost); struct lpfc_hba *phba = vport->phba; struct fc_bsg_reply *bsg_reply = job->reply; struct forced_link_speed_support_reply *forced_reply; int rc = 0; if (job->request_len < sizeof(struct fc_bsg_request) + sizeof(struct get_forced_link_speed_support)) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "0048 Received FORCED_LINK_SPEED request " "below minimum size\n"); rc = -EINVAL; goto job_error; } forced_reply = (struct forced_link_speed_support_reply *) bsg_reply->reply_data.vendor_reply.vendor_rsp; if (job->reply_len < sizeof(*bsg_reply) + sizeof(*forced_reply)) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "0049 Received FORCED_LINK_SPEED reply below " "minimum size\n"); rc = -EINVAL; goto job_error; } forced_reply->supported = test_bit(HBA_FORCED_LINK_SPEED, &phba->hba_flag) ? LPFC_FORCED_LINK_SPEED_SUPPORTED : LPFC_FORCED_LINK_SPEED_NOT_SUPPORTED; job_error: bsg_reply->result = rc; if (rc == 0) bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); return rc; } /** * lpfc_check_fwlog_support: Check FW log support on the adapter * @phba: Pointer to HBA context object. * * Check if FW Logging support by the adapter **/ int lpfc_check_fwlog_support(struct lpfc_hba *phba) { struct lpfc_ras_fwlog *ras_fwlog = NULL; ras_fwlog = &phba->ras_fwlog; if (!ras_fwlog->ras_hwsupport) return -EACCES; else if (!ras_fwlog->ras_enabled) return -EPERM; else return 0; } /** * lpfc_bsg_get_ras_config: Get RAS configuration settings * @job: fc_bsg_job to handle * * Get RAS configuration values set. **/ static int lpfc_bsg_get_ras_config(struct bsg_job *job) { struct Scsi_Host *shost = fc_bsg_to_shost(job); struct lpfc_vport *vport = shost_priv(shost); struct fc_bsg_reply *bsg_reply = job->reply; struct lpfc_hba *phba = vport->phba; struct lpfc_bsg_get_ras_config_reply *ras_reply; struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog; int rc = 0; if (job->request_len < sizeof(struct fc_bsg_request) + sizeof(struct lpfc_bsg_ras_req)) { lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "6192 FW_LOG request received " "below minimum size\n"); rc = -EINVAL; goto ras_job_error; } /* Check FW log status */ rc = lpfc_check_fwlog_support(phba); if (rc) goto ras_job_error; ras_reply = (struct lpfc_bsg_get_ras_config_reply *) bsg_reply->reply_data.vendor_reply.vendor_rsp; /* Current logging state */ spin_lock_irq(&phba->ras_fwlog_lock); if (ras_fwlog->state == ACTIVE) ras_reply->state = LPFC_RASLOG_STATE_RUNNING; else ras_reply->state = LPFC_RASLOG_STATE_STOPPED; spin_unlock_irq(&phba->ras_fwlog_lock); ras_reply->log_level = phba->ras_fwlog.fw_loglevel; ras_reply->log_buff_sz = phba->cfg_ras_fwlog_buffsize; ras_job_error: /* make error code available to userspace */ bsg_reply->result = rc; /* complete the job back to userspace */ if (!rc) bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); return rc; } /** * lpfc_bsg_set_ras_config: Set FW logging parameters * @job: fc_bsg_job to handle * * Set log-level parameters for FW-logging in host memory **/ static int lpfc_bsg_set_ras_config(struct bsg_job *job) { struct Scsi_Host *shost = fc_bsg_to_shost(job); struct lpfc_vport *vport = shost_priv(shost); struct lpfc_hba *phba = vport->phba; struct lpfc_bsg_set_ras_config_req *ras_req; struct fc_bsg_request *bsg_request = job->request; struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog; struct fc_bsg_reply *bsg_reply = job->reply; uint8_t action = 0, log_level = 0; int rc = 0, action_status = 0; if (job->request_len < sizeof(struct fc_bsg_request) + sizeof(struct lpfc_bsg_set_ras_config_req)) { lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "6182 Received RAS_LOG request " "below minimum size\n"); rc = -EINVAL; goto ras_job_error; } /* Check FW log status */ rc = lpfc_check_fwlog_support(phba); if (rc) goto ras_job_error; ras_req = (struct lpfc_bsg_set_ras_config_req *) bsg_request->rqst_data.h_vendor.vendor_cmd; action = ras_req->action; log_level = ras_req->log_level; if (action == LPFC_RASACTION_STOP_LOGGING) { /* Check if already disabled */ spin_lock_irq(&phba->ras_fwlog_lock); if (ras_fwlog->state != ACTIVE) { spin_unlock_irq(&phba->ras_fwlog_lock); rc = -ESRCH; goto ras_job_error; } spin_unlock_irq(&phba->ras_fwlog_lock); /* Disable logging */ lpfc_ras_stop_fwlog(phba); } else { /*action = LPFC_RASACTION_START_LOGGING*/ /* Even though FW-logging is active re-initialize * FW-logging with new log-level. Return status * "Logging already Running" to caller. **/ spin_lock_irq(&phba->ras_fwlog_lock); if (ras_fwlog->state != INACTIVE) action_status = -EINPROGRESS; spin_unlock_irq(&phba->ras_fwlog_lock); /* Enable logging */ rc = lpfc_sli4_ras_fwlog_init(phba, log_level, LPFC_RAS_ENABLE_LOGGING); if (rc) { rc = -EINVAL; goto ras_job_error; } /* Check if FW-logging is re-initialized */ if (action_status == -EINPROGRESS) rc = action_status; } ras_job_error: /* make error code available to userspace */ bsg_reply->result = rc; /* complete the job back to userspace */ if (!rc) bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); return rc; } /** * lpfc_bsg_get_ras_lwpd: Get log write position data * @job: fc_bsg_job to handle * * Get Offset/Wrap count of the log message written * in host memory **/ static int lpfc_bsg_get_ras_lwpd(struct bsg_job *job) { struct Scsi_Host *shost = fc_bsg_to_shost(job); struct lpfc_vport *vport = shost_priv(shost); struct lpfc_bsg_get_ras_lwpd *ras_reply; struct lpfc_hba *phba = vport->phba; struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog; struct fc_bsg_reply *bsg_reply = job->reply; u32 *lwpd_ptr = NULL; int rc = 0; rc = lpfc_check_fwlog_support(phba); if (rc) goto ras_job_error; if (job->request_len < sizeof(struct fc_bsg_request) + sizeof(struct lpfc_bsg_ras_req)) { lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "6183 Received RAS_LOG request " "below minimum size\n"); rc = -EINVAL; goto ras_job_error; } ras_reply = (struct lpfc_bsg_get_ras_lwpd *) bsg_reply->reply_data.vendor_reply.vendor_rsp; if (!ras_fwlog->lwpd.virt) { lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "6193 Restart FW Logging\n"); rc = -EINVAL; goto ras_job_error; } /* Get lwpd offset */ lwpd_ptr = (uint32_t *)(ras_fwlog->lwpd.virt); ras_reply->offset = be32_to_cpu(*lwpd_ptr & 0xffffffff); /* Get wrap count */ ras_reply->wrap_count = be32_to_cpu(*(++lwpd_ptr) & 0xffffffff); ras_job_error: /* make error code available to userspace */ bsg_reply->result = rc; /* complete the job back to userspace */ if (!rc) bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); return rc; } /** * lpfc_bsg_get_ras_fwlog: Read FW log * @job: fc_bsg_job to handle * * Copy the FW log into the passed buffer. **/ static int lpfc_bsg_get_ras_fwlog(struct bsg_job *job) { struct Scsi_Host *shost = fc_bsg_to_shost(job); struct lpfc_vport *vport = shost_priv(shost); struct lpfc_hba *phba = vport->phba; struct fc_bsg_request *bsg_request = job->request; struct fc_bsg_reply *bsg_reply = job->reply; struct lpfc_bsg_get_fwlog_req *ras_req; u32 rd_offset, rd_index, offset; void *src, *fwlog_buff; struct lpfc_ras_fwlog *ras_fwlog = NULL; struct lpfc_dmabuf *dmabuf, *next; int rc = 0; ras_fwlog = &phba->ras_fwlog; rc = lpfc_check_fwlog_support(phba); if (rc) goto ras_job_error; /* Logging to be stopped before reading */ spin_lock_irq(&phba->ras_fwlog_lock); if (ras_fwlog->state == ACTIVE) { spin_unlock_irq(&phba->ras_fwlog_lock); rc = -EINPROGRESS; goto ras_job_error; } spin_unlock_irq(&phba->ras_fwlog_lock); if (job->request_len < sizeof(struct fc_bsg_request) + sizeof(struct lpfc_bsg_get_fwlog_req)) { lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "6184 Received RAS_LOG request " "below minimum size\n"); rc = -EINVAL; goto ras_job_error; } ras_req = (struct lpfc_bsg_get_fwlog_req *) bsg_request->rqst_data.h_vendor.vendor_cmd; rd_offset = ras_req->read_offset; /* Allocate memory to read fw log*/ fwlog_buff = vmalloc(ras_req->read_size); if (!fwlog_buff) { rc = -ENOMEM; goto ras_job_error; } rd_index = (rd_offset / LPFC_RAS_MAX_ENTRY_SIZE); offset = (rd_offset % LPFC_RAS_MAX_ENTRY_SIZE); list_for_each_entry_safe(dmabuf, next, &ras_fwlog->fwlog_buff_list, list) { if (dmabuf->buffer_tag < rd_index) continue; src = dmabuf->virt + offset; memcpy(fwlog_buff, src, ras_req->read_size); break; } bsg_reply->reply_payload_rcv_len = sg_copy_from_buffer(job->reply_payload.sg_list, job->reply_payload.sg_cnt, fwlog_buff, ras_req->read_size); vfree(fwlog_buff); ras_job_error: bsg_reply->result = rc; if (!rc) bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); return rc; } static int lpfc_get_trunk_info(struct bsg_job *job) { struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job)); struct lpfc_hba *phba = vport->phba; struct fc_bsg_reply *bsg_reply = job->reply; struct lpfc_trunk_info *event_reply; int rc = 0; if (job->request_len < sizeof(struct fc_bsg_request) + sizeof(struct get_trunk_info_req)) { lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "2744 Received GET TRUNK _INFO request below " "minimum size\n"); rc = -EINVAL; goto job_error; } event_reply = (struct lpfc_trunk_info *) bsg_reply->reply_data.vendor_reply.vendor_rsp; if (job->reply_len < sizeof(*bsg_reply) + sizeof(*event_reply)) { lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, "2728 Received GET TRUNK _INFO reply below " "minimum size\n"); rc = -EINVAL; goto job_error; } if (event_reply == NULL) { rc = -EINVAL; goto job_error; } bsg_bf_set(lpfc_trunk_info_link_status, event_reply, (phba->link_state >= LPFC_LINK_UP) ? 1 : 0); bsg_bf_set(lpfc_trunk_info_trunk_active0, event_reply, (phba->trunk_link.link0.state == LPFC_LINK_UP) ? 1 : 0); bsg_bf_set(lpfc_trunk_info_trunk_active1, event_reply, (phba->trunk_link.link1.state == LPFC_LINK_UP) ? 1 : 0); bsg_bf_set(lpfc_trunk_info_trunk_active2, event_reply, (phba->trunk_link.link2.state == LPFC_LINK_UP) ? 1 : 0); bsg_bf_set(lpfc_trunk_info_trunk_active3, event_reply, (phba->trunk_link.link3.state == LPFC_LINK_UP) ? 1 : 0); bsg_bf_set(lpfc_trunk_info_trunk_config0, event_reply, bf_get(lpfc_conf_trunk_port0, &phba->sli4_hba)); bsg_bf_set(lpfc_trunk_info_trunk_config1, event_reply, bf_get(lpfc_conf_trunk_port1, &phba->sli4_hba)); bsg_bf_set(lpfc_trunk_info_trunk_config2, event_reply, bf_get(lpfc_conf_trunk_port2, &phba->sli4_hba)); bsg_bf_set(lpfc_trunk_info_trunk_config3, event_reply, bf_get(lpfc_conf_trunk_port3, &phba->sli4_hba)); event_reply->port_speed = phba->sli4_hba.link_state.speed / 1000; event_reply->logical_speed = phba->sli4_hba.link_state.logical_speed / 1000; job_error: bsg_reply->result = rc; if (!rc) bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); return rc; } static int lpfc_get_cgnbuf_info(struct bsg_job *job) { struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job)); struct lpfc_hba *phba = vport->phba; struct fc_bsg_request *bsg_request = job->request; struct fc_bsg_reply *bsg_reply = job->reply; struct get_cgnbuf_info_req *cgnbuf_req; struct lpfc_cgn_info *cp; uint8_t *cgn_buff; size_t size, cinfosz; int rc = 0; if (job->request_len < sizeof(struct fc_bsg_request) + sizeof(struct get_cgnbuf_info_req)) { rc = -ENOMEM; goto job_exit; } if (!phba->sli4_hba.pc_sli4_params.cmf) { rc = -ENOENT; goto job_exit; } if (!phba->cgn_i || !phba->cgn_i->virt) { rc = -ENOENT; goto job_exit; } cp = phba->cgn_i->virt; if (cp->cgn_info_version < LPFC_CGN_INFO_V3) { rc = -EPERM; goto job_exit; } cgnbuf_req = (struct get_cgnbuf_info_req *) bsg_request->rqst_data.h_vendor.vendor_cmd; /* For reset or size == 0 */ bsg_reply->reply_payload_rcv_len = 0; if (cgnbuf_req->reset == LPFC_BSG_CGN_RESET_STAT) { lpfc_init_congestion_stat(phba); goto job_exit; } /* We don't want to include the CRC at the end */ cinfosz = sizeof(struct lpfc_cgn_info) - sizeof(uint32_t); size = cgnbuf_req->read_size; if (!size) goto job_exit; if (size < cinfosz) { /* Just copy back what we can */ cinfosz = size; rc = -E2BIG; } /* Allocate memory to read congestion info */ cgn_buff = vmalloc(cinfosz); if (!cgn_buff) { rc = -ENOMEM; goto job_exit; } memcpy(cgn_buff, cp, cinfosz); bsg_reply->reply_payload_rcv_len = sg_copy_from_buffer(job->reply_payload.sg_list, job->reply_payload.sg_cnt, cgn_buff, cinfosz); vfree(cgn_buff); job_exit: bsg_reply->result = rc; if (!rc) bsg_job_done(job, bsg_reply->result, bsg_reply->reply_payload_rcv_len); else lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, "2724 GET CGNBUF error: %d\n", rc); return rc; } /** * lpfc_bsg_hst_vendor - process a vendor-specific fc_bsg_job * @job: fc_bsg_job to handle **/ static int lpfc_bsg_hst_vendor(struct bsg_job *job) { struct fc_bsg_request *bsg_request = job->request; struct fc_bsg_reply *bsg_reply = job->reply; int command = bsg_request->rqst_data.h_vendor.vendor_cmd[0]; int rc; switch (command) { case LPFC_BSG_VENDOR_SET_CT_EVENT: rc = lpfc_bsg_hba_set_event(job); break; case LPFC_BSG_VENDOR_GET_CT_EVENT: rc = lpfc_bsg_hba_get_event(job); break; case LPFC_BSG_VENDOR_SEND_MGMT_RESP: rc = lpfc_bsg_send_mgmt_rsp(job); break; case LPFC_BSG_VENDOR_DIAG_MODE: rc = lpfc_bsg_diag_loopback_mode(job); break; case LPFC_BSG_VENDOR_DIAG_MODE_END: rc = lpfc_sli4_bsg_diag_mode_end(job); break; case LPFC_BSG_VENDOR_DIAG_RUN_LOOPBACK: rc = lpfc_bsg_diag_loopback_run(job); break; case LPFC_BSG_VENDOR_LINK_DIAG_TEST: rc = lpfc_sli4_bsg_link_diag_test(job); break; case LPFC_BSG_VENDOR_GET_MGMT_REV: rc = lpfc_bsg_get_dfc_rev(job); break; case LPFC_BSG_VENDOR_MBOX: rc = lpfc_bsg_mbox_cmd(job); break; case LPFC_BSG_VENDOR_FORCED_LINK_SPEED: rc = lpfc_forced_link_speed(job); break; case LPFC_BSG_VENDOR_RAS_GET_LWPD: rc = lpfc_bsg_get_ras_lwpd(job); break; case LPFC_BSG_VENDOR_RAS_GET_FWLOG: rc = lpfc_bsg_get_ras_fwlog(job); break; case LPFC_BSG_VENDOR_RAS_GET_CONFIG: rc = lpfc_bsg_get_ras_config(job); break; case LPFC_BSG_VENDOR_RAS_SET_CONFIG: rc = lpfc_bsg_set_ras_config(job); break; case LPFC_BSG_VENDOR_GET_TRUNK_INFO: rc = lpfc_get_trunk_info(job); break; case LPFC_BSG_VENDOR_GET_CGNBUF_INFO: rc = lpfc_get_cgnbuf_info(job); break; default: rc = -EINVAL; bsg_reply->reply_payload_rcv_len = 0; /* make error code available to userspace */ bsg_reply->result = rc; break; } return rc; } /** * lpfc_bsg_request - handle a bsg request from the FC transport * @job: bsg_job to handle **/ int lpfc_bsg_request(struct bsg_job *job) { struct fc_bsg_request *bsg_request = job->request; struct fc_bsg_reply *bsg_reply = job->reply; uint32_t msgcode; int rc; msgcode = bsg_request->msgcode; switch (msgcode) { case FC_BSG_HST_VENDOR: rc = lpfc_bsg_hst_vendor(job); break; case FC_BSG_RPT_ELS: rc = lpfc_bsg_rport_els(job); break; case FC_BSG_RPT_CT: rc = lpfc_bsg_send_mgmt_cmd(job); break; default: rc = -EINVAL; bsg_reply->reply_payload_rcv_len = 0; /* make error code available to userspace */ bsg_reply->result = rc; break; } return rc; } /** * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport * @job: bsg_job that has timed out * * This function just aborts the job's IOCB. The aborted IOCB will return to * the waiting function which will handle passing the error back to userspace **/ int lpfc_bsg_timeout(struct bsg_job *job) { struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job)); struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *cmdiocb; struct lpfc_sli_ring *pring; struct bsg_job_data *dd_data; unsigned long flags; int rc = 0; LIST_HEAD(completions); struct lpfc_iocbq *check_iocb, *next_iocb; pring = lpfc_phba_elsring(phba); if (unlikely(!pring)) return -EIO; /* if job's driver data is NULL, the command completed or is in the * the process of completing. In this case, return status to request * so the timeout is retried. This avoids double completion issues * and the request will be pulled off the timer queue when the * command's completion handler executes. Otherwise, prevent the * command's completion handler from executing the job done callback * and continue processing to abort the outstanding the command. */ spin_lock_irqsave(&phba->ct_ev_lock, flags); dd_data = (struct bsg_job_data *)job->dd_data; if (dd_data) { dd_data->set_job = NULL; job->dd_data = NULL; } else { spin_unlock_irqrestore(&phba->ct_ev_lock, flags); return -EAGAIN; } switch (dd_data->type) { case TYPE_IOCB: /* Check to see if IOCB was issued to the port or not. If not, * remove it from the txq queue and call cancel iocbs. * Otherwise, call abort iotag */ cmdiocb = dd_data->context_un.iocb.cmdiocbq; spin_unlock_irqrestore(&phba->ct_ev_lock, flags); spin_lock_irqsave(&phba->hbalock, flags); /* make sure the I/O abort window is still open */ if (!(cmdiocb->cmd_flag & LPFC_IO_CMD_OUTSTANDING)) { spin_unlock_irqrestore(&phba->hbalock, flags); return -EAGAIN; } list_for_each_entry_safe(check_iocb, next_iocb, &pring->txq, list) { if (check_iocb == cmdiocb) { list_move_tail(&check_iocb->list, &completions); break; } } if (list_empty(&completions)) lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb, NULL); spin_unlock_irqrestore(&phba->hbalock, flags); if (!list_empty(&completions)) { lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); } break; case TYPE_EVT: spin_unlock_irqrestore(&phba->ct_ev_lock, flags); break; case TYPE_MBOX: /* Update the ext buf ctx state if needed */ if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_PORT) phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_ABTS; spin_unlock_irqrestore(&phba->ct_ev_lock, flags); break; default: spin_unlock_irqrestore(&phba->ct_ev_lock, flags); break; } /* scsi transport fc fc_bsg_job_timeout expects a zero return code, * otherwise an error message will be displayed on the console * so always return success (zero) */ return rc; }
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