| /******************************************************************* |
| * This file is part of the Emulex Linux Device Driver for * |
| * Fibre Channel Host Bus Adapters. * |
| * Copyright (C) 2009-2015 Emulex. All rights reserved. * |
| * EMULEX and SLI are trademarks of Emulex. * |
| * www.emulex.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 <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 MENLO_DID 0x0000FC0E |
| |
| struct lpfc_bsg_menlo { |
| struct lpfc_iocbq *cmdiocbq; |
| struct lpfc_dmabuf *rmp; |
| }; |
| |
| #define TYPE_EVT 1 |
| #define TYPE_IOCB 2 |
| #define TYPE_MBOX 3 |
| #define TYPE_MENLO 4 |
| struct bsg_job_data { |
| uint32_t type; |
| struct fc_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; |
| struct lpfc_bsg_menlo menlo; |
| } 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) { |
| lpfc_mbuf_free(phba, mlast->virt, mlast->phys); |
| list_del(&mlast->list); |
| 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 fc_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 fc_bsg_job *job; |
| IOCB_t *rsp; |
| struct lpfc_dmabuf *bmp, *cmp, *rmp; |
| struct lpfc_nodelist *ndlp; |
| struct lpfc_bsg_iocb *iocb; |
| unsigned long flags; |
| unsigned int rsp_size; |
| int rc = 0; |
| |
| dd_data = cmdiocbq->context1; |
| |
| /* 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->iocb_flag &= ~LPFC_IO_CMD_OUTSTANDING; |
| spin_unlock_irqrestore(&phba->hbalock, flags); |
| |
| iocb = &dd_data->context_un.iocb; |
| ndlp = iocb->ndlp; |
| rmp = iocb->rmp; |
| cmp = cmdiocbq->context2; |
| bmp = cmdiocbq->context3; |
| rsp = &rspiocbq->iocb; |
| |
| /* Copy the completed data or set the error status */ |
| |
| if (job) { |
| if (rsp->ulpStatus) { |
| if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) { |
| switch (rsp->un.ulpWord[4] & 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 { |
| rsp_size = rsp->un.genreq64.bdl.bdeSize; |
| job->reply->reply_payload_rcv_len = |
| lpfc_bsg_copy_data(rmp, &job->reply_payload, |
| rsp_size, 0); |
| } |
| } |
| |
| lpfc_free_bsg_buffers(phba, cmp); |
| lpfc_free_bsg_buffers(phba, rmp); |
| 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) { |
| job->reply->result = rc; |
| job->job_done(job); |
| } |
| 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 fc_bsg_job *job) |
| { |
| struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
| struct lpfc_hba *phba = vport->phba; |
| struct lpfc_rport_data *rdata = job->rport->dd_data; |
| struct lpfc_nodelist *ndlp = rdata->pnode; |
| struct ulp_bde64 *bpl = NULL; |
| uint32_t timeout; |
| struct lpfc_iocbq *cmdiocbq = NULL; |
| IOCB_t *cmd; |
| struct lpfc_dmabuf *bmp = NULL, *cmp = NULL, *rmp = NULL; |
| int request_nseg; |
| int reply_nseg; |
| struct bsg_job_data *dd_data; |
| unsigned long flags; |
| uint32_t creg_val; |
| int rc = 0; |
| int iocb_stat; |
| |
| /* in case no data is transferred */ |
| job->reply->reply_payload_rcv_len = 0; |
| |
| /* 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; |
| } |
| |
| if (!lpfc_nlp_get(ndlp)) { |
| rc = -ENODEV; |
| goto no_ndlp; |
| } |
| |
| if (ndlp->nlp_flag & NLP_ELS_SND_MASK) { |
| rc = -ENODEV; |
| goto free_ndlp; |
| } |
| |
| cmdiocbq = lpfc_sli_get_iocbq(phba); |
| if (!cmdiocbq) { |
| rc = -ENOMEM; |
| goto free_ndlp; |
| } |
| |
| cmd = &cmdiocbq->iocb; |
| |
| 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; |
| } |
| |
| cmd->un.genreq64.bdl.ulpIoTag32 = 0; |
| cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys); |
| cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys); |
| cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64; |
| cmd->un.genreq64.bdl.bdeSize = |
| (request_nseg + reply_nseg) * sizeof(struct ulp_bde64); |
| cmd->ulpCommand = CMD_GEN_REQUEST64_CR; |
| cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA); |
| cmd->un.genreq64.w5.hcsw.Dfctl = 0; |
| cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL; |
| cmd->un.genreq64.w5.hcsw.Type = FC_TYPE_CT; |
| cmd->ulpBdeCount = 1; |
| cmd->ulpLe = 1; |
| cmd->ulpClass = CLASS3; |
| cmd->ulpContext = ndlp->nlp_rpi; |
| if (phba->sli_rev == LPFC_SLI_REV4) |
| cmd->ulpContext = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; |
| cmd->ulpOwner = OWN_CHIP; |
| cmdiocbq->vport = phba->pport; |
| cmdiocbq->context3 = bmp; |
| cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC; |
| timeout = phba->fc_ratov * 2; |
| cmd->ulpTimeout = timeout; |
| |
| cmdiocbq->iocb_cmpl = lpfc_bsg_send_mgmt_cmd_cmp; |
| cmdiocbq->context1 = dd_data; |
| cmdiocbq->context2 = cmp; |
| cmdiocbq->context3 = bmp; |
| cmdiocbq->context_un.ndlp = ndlp; |
| 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 = 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 */ |
| } |
| |
| 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->iocb_flag & LPFC_IO_LIBDFC) { |
| /* open up abort window to timeout handler */ |
| cmdiocbq->iocb_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 */ |
| job->dd_data = NULL; |
| |
| 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_ndlp: |
| lpfc_nlp_put(ndlp); |
| no_ndlp: |
| kfree(dd_data); |
| no_dd_data: |
| /* make error code available to userspace */ |
| job->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 fc_bsg_job *job; |
| IOCB_t *rsp; |
| 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; |
| |
| dd_data = cmdiocbq->context1; |
| ndlp = dd_data->context_un.iocb.ndlp; |
| cmdiocbq->context1 = ndlp; |
| |
| /* 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->iocb_flag &= ~LPFC_IO_CMD_OUTSTANDING; |
| spin_unlock_irqrestore(&phba->hbalock, flags); |
| |
| rsp = &rspiocbq->iocb; |
| pcmd = (struct lpfc_dmabuf *)cmdiocbq->context2; |
| 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 (rsp->ulpStatus == IOSTAT_SUCCESS) { |
| rsp_size = rsp->un.elsreq64.bdl.bdeSize; |
| job->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 (rsp->ulpStatus == IOSTAT_LS_RJT) { |
| job->reply->reply_payload_rcv_len = |
| sizeof(struct fc_bsg_ctels_reply); |
| /* LS_RJT data returned in word 4 */ |
| rjt_data = (uint8_t *)&rsp->un.ulpWord[4]; |
| els_reply = &job->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 { |
| rc = -EIO; |
| } |
| } |
| |
| lpfc_nlp_put(ndlp); |
| lpfc_els_free_iocb(phba, cmdiocbq); |
| kfree(dd_data); |
| |
| /* Complete the job if the job is still active */ |
| |
| if (job) { |
| job->reply->result = rc; |
| job->job_done(job); |
| } |
| 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 fc_bsg_job *job) |
| { |
| struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
| struct lpfc_hba *phba = vport->phba; |
| struct lpfc_rport_data *rdata = job->rport->dd_data; |
| struct lpfc_nodelist *ndlp = rdata->pnode; |
| 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 */ |
| job->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 = job->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; |
| } |
| |
| rpi = ndlp->nlp_rpi; |
| |
| /* Transfer the request payload to allocated command dma buffer */ |
| |
| sg_copy_to_buffer(job->request_payload.sg_list, |
| job->request_payload.sg_cnt, |
| ((struct lpfc_dmabuf *)cmdiocbq->context2)->virt, |
| cmdsize); |
| |
| if (phba->sli_rev == LPFC_SLI_REV4) |
| cmdiocbq->iocb.ulpContext = phba->sli4_hba.rpi_ids[rpi]; |
| else |
| cmdiocbq->iocb.ulpContext = rpi; |
| cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC; |
| cmdiocbq->context1 = dd_data; |
| cmdiocbq->context_un.ndlp = ndlp; |
| cmdiocbq->iocb_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->iocb_flag & LPFC_IO_LIBDFC) { |
| /* open up abort window to timeout handler */ |
| cmdiocbq->iocb_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; |
| } |
| |
| /* iocb failed so cleanup */ |
| job->dd_data = NULL; |
| |
| linkdown_err: |
| cmdiocbq->context1 = ndlp; |
| 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 */ |
| job->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 |
| * @phba: |
| * @pring: |
| * @piocbq: |
| * |
| * 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; |
| uint32_t cmd; |
| struct lpfc_dmabuf *dmabuf = NULL; |
| struct lpfc_bsg_event *evt; |
| struct event_data *evt_dat = NULL; |
| struct lpfc_iocbq *iocbq; |
| size_t offset = 0; |
| struct list_head head; |
| struct ulp_bde64 *bde; |
| dma_addr_t dma_addr; |
| int i; |
| struct lpfc_dmabuf *bdeBuf1 = piocbq->context2; |
| struct lpfc_dmabuf *bdeBuf2 = piocbq->context3; |
| struct lpfc_hbq_entry *hbqe; |
| struct lpfc_sli_ct_request *ct_req; |
| struct fc_bsg_job *job = NULL; |
| struct bsg_job_data *dd_data = NULL; |
| unsigned long flags; |
| int size = 0; |
| |
| INIT_LIST_HEAD(&head); |
| list_add_tail(&head, &piocbq->list); |
| |
| if (piocbq->iocb.ulpBdeCount == 0 || |
| piocbq->iocb.un.cont64[0].tus.f.bdeSize == 0) |
| goto error_ct_unsol_exit; |
| |
| if (phba->link_state == LPFC_HBA_ERROR || |
| (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) |
| goto error_ct_unsol_exit; |
| |
| if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) |
| dmabuf = bdeBuf1; |
| else { |
| dma_addr = getPaddr(piocbq->iocb.un.cont64[0].addrHigh, |
| piocbq->iocb.un.cont64[0].addrLow); |
| dmabuf = lpfc_sli_ringpostbuf_get(phba, pring, dma_addr); |
| } |
| if (dmabuf == NULL) |
| goto error_ct_unsol_exit; |
| ct_req = (struct lpfc_sli_ct_request *)dmabuf->virt; |
| evt_req_id = ct_req->FsType; |
| cmd = ct_req->CommandResponse.bits.CmdRsp; |
| if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) |
| lpfc_sli_ringpostbuf_put(phba, pring, dmabuf); |
| |
| 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); |
| evt_dat->len = iocbq->iocb.unsli3.rcvsli3.acc_len; |
| } else { |
| list_for_each_entry(iocbq, &head, list) { |
| for (i = 0; i < iocbq->iocb.ulpBdeCount; i++) |
| evt_dat->len += |
| iocbq->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->context2; |
| bdeBuf2 = iocbq->context3; |
| } |
| for (i = 0; i < iocbq->iocb.ulpBdeCount; i++) { |
| if (phba->sli3_options & |
| LPFC_SLI3_HBQ_ENABLED) { |
| if (i == 0) { |
| hbqe = (struct lpfc_hbq_entry *) |
| &iocbq->iocb.un.ulpWord[0]; |
| size = hbqe->bde.tus.f.bdeSize; |
| dmabuf = bdeBuf1; |
| } else if (i == 1) { |
| hbqe = (struct lpfc_hbq_entry *) |
| &iocbq->iocb.unsli3. |
| sli3Words[4]; |
| size = hbqe->bde.tus.f.bdeSize; |
| 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 0x%p\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_post_buffer(phba, |
| pring, |
| 1); |
| } |
| break; |
| default: |
| if (!(phba->sli3_options & |
| LPFC_SLI3_HBQ_ENABLED)) |
| lpfc_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 = |
| piocbq->iocb.ulpContext; |
| phba->ct_ctx[evt_dat->immed_dat].oxid = |
| piocbq->iocb.unsli3.rcvsli3.ox_id; |
| phba->ct_ctx[evt_dat->immed_dat].SID = |
| piocbq->iocb.un.rcvels.remoteID; |
| phba->ct_ctx[evt_dat->immed_dat].valid = UNSOL_VALID; |
| } else |
| evt_dat->immed_dat = piocbq->iocb.ulpContext; |
| |
| 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) { |
| job->reply->reply_payload_rcv_len = size; |
| /* make error code available to userspace */ |
| job->reply->result = 0; |
| job->dd_data = NULL; |
| /* complete the job back to userspace */ |
| spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
| job->job_done(job); |
| 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 fc_bsg_job *job) |
| { |
| struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
| struct lpfc_hba *phba = vport->phba; |
| 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 *) |
| job->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: |
| if (dd_data != NULL) |
| 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 fc_bsg_job *job) |
| { |
| struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
| struct lpfc_hba *phba = vport->phba; |
| 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 *) |
| job->request->rqst_data.h_vendor.vendor_cmd; |
| |
| event_reply = (struct get_ct_event_reply *) |
| job->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) { |
| job->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) |
| job->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 |
| job->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; |
| job->reply->result = 0; |
| job->job_done(job); |
| return 0; |
| |
| job_error: |
| job->dd_data = NULL; |
| job->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 fc_bsg_job *job; |
| IOCB_t *rsp; |
| struct lpfc_dmabuf *bmp, *cmp; |
| struct lpfc_nodelist *ndlp; |
| unsigned long flags; |
| int rc = 0; |
| |
| dd_data = cmdiocbq->context1; |
| |
| /* 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->iocb_flag &= ~LPFC_IO_CMD_OUTSTANDING; |
| spin_unlock_irqrestore(&phba->hbalock, flags); |
| |
| ndlp = dd_data->context_un.iocb.ndlp; |
| cmp = cmdiocbq->context2; |
| bmp = cmdiocbq->context3; |
| rsp = &rspiocbq->iocb; |
| |
| /* Copy the completed job data or set the error status */ |
| |
| if (job) { |
| if (rsp->ulpStatus) { |
| if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) { |
| switch (rsp->un.ulpWord[4] & 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 { |
| job->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) { |
| job->reply->result = rc; |
| job->job_done(job); |
| } |
| 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. |
| * @bmp: Pointer to a dma buffer descriptor. |
| * @num_entry: Number of enties in the bde. |
| **/ |
| static int |
| lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct fc_bsg_job *job, uint32_t tag, |
| struct lpfc_dmabuf *cmp, struct lpfc_dmabuf *bmp, |
| int num_entry) |
| { |
| IOCB_t *icmd; |
| 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; |
| |
| /* 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; |
| } |
| |
| icmd = &ctiocb->iocb; |
| icmd->un.xseq64.bdl.ulpIoTag32 = 0; |
| icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(bmp->phys); |
| icmd->un.xseq64.bdl.addrLow = putPaddrLow(bmp->phys); |
| icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64; |
| icmd->un.xseq64.bdl.bdeSize = (num_entry * sizeof(struct ulp_bde64)); |
| icmd->un.xseq64.w5.hcsw.Fctl = (LS | LA); |
| icmd->un.xseq64.w5.hcsw.Dfctl = 0; |
| icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_SOL_CTL; |
| icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT; |
| |
| /* Fill in rest of iocb */ |
| icmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX; |
| icmd->ulpBdeCount = 1; |
| icmd->ulpLe = 1; |
| icmd->ulpClass = CLASS3; |
| 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; |
| } |
| icmd->ulpContext = phba->ct_ctx[tag].rxid; |
| icmd->unsli3.rcvsli3.ox_id = phba->ct_ctx[tag].oxid; |
| 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", |
| icmd->ulpContext, |
| phba->ct_ctx[tag].SID); |
| rc = IOCB_ERROR; |
| goto issue_ct_rsp_exit; |
| } |
| |
| /* Check if the ndlp is active */ |
| if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { |
| rc = IOCB_ERROR; |
| goto issue_ct_rsp_exit; |
| } |
| |
| /* get a refernece count so the ndlp doesn't go away while |
| * we respond |
| */ |
| if (!lpfc_nlp_get(ndlp)) { |
| rc = IOCB_ERROR; |
| goto issue_ct_rsp_exit; |
| } |
| |
| icmd->un.ulpWord[3] = |
| phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; |
| |
| /* The exchange is done, mark the entry as invalid */ |
| phba->ct_ctx[tag].valid = UNSOL_INVALID; |
| } else |
| icmd->ulpContext = (ushort) tag; |
| |
| icmd->ulpTimeout = phba->fc_ratov * 2; |
| |
| /* 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", |
| icmd->ulpContext, icmd->ulpIoTag, tag, phba->link_state); |
| |
| ctiocb->iocb_cmpl = NULL; |
| ctiocb->iocb_flag |= LPFC_IO_LIBDFC; |
| ctiocb->vport = phba->pport; |
| ctiocb->context1 = dd_data; |
| ctiocb->context2 = cmp; |
| ctiocb->context3 = bmp; |
| ctiocb->context_un.ndlp = ndlp; |
| ctiocb->iocb_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 = 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 = -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->iocb_flag & LPFC_IO_LIBDFC) { |
| /* open up abort window to timeout handler */ |
| ctiocb->iocb_flag |= LPFC_IO_CMD_OUTSTANDING; |
| } |
| spin_unlock_irqrestore(&phba->hbalock, flags); |
| return 0; /* done for now */ |
| } |
| |
| /* iocb failed so cleanup */ |
| job->dd_data = NULL; |
| |
| 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 fc_bsg_job *job) |
| { |
| struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
| struct lpfc_hba *phba = vport->phba; |
| struct send_mgmt_resp *mgmt_resp = (struct send_mgmt_resp *) |
| job->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 */ |
| job->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 */ |
| job->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_sli_ring *pring; |
| int i = 0; |
| |
| psli = &phba->sli; |
| if (!psli) |
| return -ENODEV; |
| |
| pring = &psli->ring[LPFC_FCP_RING]; |
| if (!pring) |
| 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); |
| } |
| |
| while (!list_empty(&pring->txcmplq)) { |
| if (i++ > 500) /* wait up to 5 seconds */ |
| break; |
| msleep(10); |
| } |
| 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 fc_bsg_job *job) |
| { |
| 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 */ |
| job->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 *) |
| job->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 */ |
| job->reply->result = rc; |
| /* complete the job back to userspace if no error */ |
| if (rc == 0) |
| job->job_done(job); |
| 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_internal_loopback - set sli4 internal loopback diagnostic |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is responsible for issuing a sli4 mailbox command for setting |
| * up internal loopback diagnostic. |
| */ |
| static int |
| lpfc_sli4_bsg_set_internal_loopback(struct lpfc_hba *phba) |
| { |
| 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, phba->sli4_hba.lnk_info.lnk_no); |
| 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, |
| LPFC_DIAG_LOOPBACK_TYPE_INTERNAL); |
| |
| 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) |
| { |
| int rc; |
| |
| if (phba->pport->fc_flag & FC_VFI_REGISTERED) { |
| 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; |
| } |
| rc = lpfc_issue_reg_vfi(phba->pport); |
| return rc; |
| } |
| |
| /** |
| * 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 fc_bsg_job *job) |
| { |
| struct diag_mode_set *loopback_mode; |
| uint32_t link_flags, timeout; |
| int i, rc = 0; |
| |
| /* no data to return just the return code */ |
| job->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_error; |
| } |
| |
| rc = lpfc_bsg_diag_mode_enter(phba); |
| if (rc) |
| goto job_error; |
| |
| /* 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_error; |
| |
| /* bring the link to diagnostic mode */ |
| lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC, |
| "3129 Bring link to diagnostic state.\n"); |
| loopback_mode = (struct diag_mode_set *) |
| job->request->rqst_data.h_vendor.vendor_cmd; |
| link_flags = loopback_mode->type; |
| timeout = loopback_mode->timeout * 100; |
| |
| 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); |
| |
| if (link_flags == INTERNAL_LOOP_BACK) |
| rc = lpfc_sli4_bsg_set_internal_loopback(phba); |
| else if (link_flags == EXTERNAL_LOOP_BACK) |
| rc = lpfc_hba_init_link_fc_topology(phba, |
| FLAGS_TOPOLOGY_MODE_PT_PT, |
| MBX_NOWAIT); |
| else { |
| 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_error: |
| /* make error code available to userspace */ |
| job->reply->result = rc; |
| /* complete the job back to userspace if no error */ |
| if (rc == 0) |
| job->job_done(job); |
| 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 fc_bsg_job *job) |
| { |
| struct Scsi_Host *shost; |
| struct lpfc_vport *vport; |
| struct lpfc_hba *phba; |
| int rc; |
| |
| shost = job->shost; |
| if (!shost) |
| return -ENODEV; |
| vport = (struct lpfc_vport *)job->shost->hostdata; |
| 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 fc_bsg_job *job) |
| { |
| 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 = job->shost; |
| if (!shost) |
| return -ENODEV; |
| vport = (struct lpfc_vport *)job->shost->hostdata; |
| 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 *) |
| job->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 */ |
| job->reply->result = rc; |
| /* complete the job back to userspace if no error */ |
| if (rc == 0) |
| job->job_done(job); |
| 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 fc_bsg_job *job) |
| { |
| 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 = 0; |
| |
| shost = job->shost; |
| if (!shost) { |
| rc = -ENODEV; |
| goto job_error; |
| } |
| vport = (struct lpfc_vport *)job->shost->hostdata; |
| if (!vport) { |
| rc = -ENODEV; |
| goto job_error; |
| } |
| phba = vport->phba; |
| if (!phba) { |
| rc = -ENODEV; |
| goto job_error; |
| } |
| |
| if (phba->sli_rev < LPFC_SLI_REV4) { |
| rc = -ENODEV; |
| goto job_error; |
| } |
| if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != |
| LPFC_SLI_INTF_IF_TYPE_2) { |
| rc = -ENODEV; |
| 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 *) |
| job->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 *) |
| job->reply->reply_data.vendor_reply.vendor_rsp; |
| |
| if (job->reply_len < |
| sizeof(struct fc_bsg_request) + sizeof(struct diag_status)) { |
| 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(struct fc_bsg_request) + |
| sizeof(struct diag_status)), |
| 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: |
| rc = 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 */ |
| job->reply->result = rc; |
| /* complete the job back to userspace if no error */ |
| if (rc == 0) |
| job->job_done(job); |
| 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); |
| 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 = (struct lpfc_dmabuf *) mbox->context1; |
| mbox->context1 = NULL; |
| mbox->context2 = 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 unsolicted 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; |
| IOCB_t *cmd, *rsp; |
| 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; |
| |
| *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; |
| } |
| |
| cmd = &cmdiocbq->iocb; |
| rsp = &rspiocbq->iocb; |
| |
| 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; |
| |
| |
| cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(dmabuf->phys); |
| cmd->un.xseq64.bdl.addrLow = putPaddrLow(dmabuf->phys); |
| cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64; |
| cmd->un.xseq64.bdl.bdeSize = sizeof(*bpl); |
| |
| cmd->un.xseq64.w5.hcsw.Fctl = LA; |
| cmd->un.xseq64.w5.hcsw.Dfctl = 0; |
| cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL; |
| cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT; |
| |
| cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CR; |
| cmd->ulpBdeCount = 1; |
| cmd->ulpLe = 1; |
| cmd->ulpClass = CLASS3; |
| cmd->ulpContext = rpi; |
| |
| cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC; |
| cmdiocbq->vport = phba->pport; |
| cmdiocbq->iocb_cmpl = NULL; |
| |
| 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) || (rsp->ulpStatus != IOSTAT_SUCCESS)) { |
| ret_val = -EIO; |
| goto err_get_xri_exit; |
| } |
| *txxri = rsp->ulpContext; |
| |
| 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_zalloc_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; |
| pci_dma_sync_single_for_device(phba->pcidev, |
| dmp->dma.phys, LPFC_BPL_SIZE, PCI_DMA_TODEVICE); |
| |
| } 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_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 unsolicted CT command. |
| **/ |
| static int lpfcdiag_loop_post_rxbufs(struct lpfc_hba *phba, uint16_t rxxri, |
| size_t len) |
| { |
| struct lpfc_sli *psli = &phba->sli; |
| struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING]; |
| 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; |
| |
| 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) { |
| 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 fc_bsg_job *job) |
| { |
| struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
| 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; |
| IOCB_t *cmd, *rsp = NULL; |
| 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 */ |
| job->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; |
| } |
| |
|