--- /dev/null
+/*******************************************************************
+ * 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;
+ uint32_t len;
+ 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;
+ len = ct_req->CommandResponse.bits.Size;
+ 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 diag_mode_test *diag_mode;
+ 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;
+ }
+
+ if (job->request_payload.payload_len !=
+ job->reply_payload.payload_len) {
+ rc = -EINVAL;
+ goto loopback_test_exit;
+ }
+ diag_mode = (struct diag_mode_test *)
+ job->request->rqst_data.h_vendor.vendor_cmd;
+
+ 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_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;
+ }
+
+ cmd = &cmdiocbq->iocb;
+ if (phba->sli_rev < LPFC_SLI_REV4)
+ rsp = &rspiocbq->iocb;
+
+ 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 = ELX_LOOPBACK_DATA;
+ ctreq->CommandResponse.bits.Size = 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;
+
+ cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(txbmp->phys);
+ cmd->un.xseq64.bdl.addrLow = putPaddrLow(txbmp->phys);
+ cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
+ cmd->un.xseq64.bdl.bdeSize = (num_bde * sizeof(struct ulp_bde64));
+
+ cmd->un.xseq64.w5.hcsw.Fctl = (LS | 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_CX;
+ cmd->ulpBdeCount = 1;
+ cmd->ulpLe = 1;
+ cmd->ulpClass = CLASS3;
+
+ if (phba->sli_rev < LPFC_SLI_REV4) {
+ cmd->ulpContext = txxri;
+ } else {
+ cmd->un.xseq64.bdl.ulpIoTag32 = 0;
+ cmd->un.ulpWord[3] = phba->sli4_hba.rpi_ids[rpi];
+ cmdiocbq->context3 = txbmp;
+ cmdiocbq->sli4_xritag = NO_XRI;
+ cmd->unsli3.rcvsli3.ox_id = 0xffff;
+ }
+ cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
+ cmdiocbq->iocb_flag |= LPFC_IO_LOOPBACK;
+ 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) ||
+ ((phba->sli_rev < LPFC_SLI_REV4) &&
+ (rsp->ulpStatus != 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;
+ job->reply->reply_payload_rcv_len =
+ sg_copy_from_buffer(job->reply_payload.sg_list,
+ job->reply_payload.sg_cnt,
+ rx_databuf, size);
+ job->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 */
+ job->reply->result = rc;
+ job->dd_data = NULL;
+ /* complete the job back to userspace if no error */
+ if (rc == IOCB_SUCCESS)
+ job->job_done(job);
+ 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 fc_bsg_job *job)
+{
+ struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
+ struct lpfc_hba *phba = vport->phba;
+ struct get_mgmt_rev *event_req;
+ 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_req = (struct get_mgmt_rev *)
+ job->request->rqst_data.h_vendor.vendor_cmd;
+
+ event_reply = (struct get_mgmt_rev_reply *)
+ job->reply->reply_data.vendor_reply.vendor_rsp;
+
+ if (job->reply_len <
+ sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev_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:
+ job->reply->result = rc;
+ if (rc == 0)
+ job->job_done(job);
+ 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 context1
+ * 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_job *job;
+ uint32_t size;
+ unsigned long flags;
+ uint8_t *pmb, *pmb_buf;
+
+ dd_data = pmboxq->context1;
+
+ /*
+ * 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) {
+ size = job->reply_payload.payload_len;
+ job->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) {
+ job->reply->result = 0;
+ job->job_done(job);
+ }
+ 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 (!(vport->fc_flag & FC_OFFLINE_MODE)) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
+ "2743 Command 0x%x is illegal in on-line "
+ "state\n",
+ mb->mbxCommand);
+ return -EPERM;
+ }
+ 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]);
+ if ((mb->un.varWords[0] == SETVAR_MLOMNT)
+ && (mb->un.varWords[1] == 1)) {
+ phba->wait_4_mlo_maint_flg = 1;
+ } else if (mb->un.varWords[0] == SETVAR_MLORST) {
+ spin_lock_irq(&phba->hbalock);
+ phba->link_flag &= ~LS_LOOPBACK_MODE;
+ spin_unlock_irq(&phba->hbalock);
+ phba->fc_topology = LPFC_TOPOLOGY_PT_PT;
+ }
+ 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_cleanup - 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 fc_bsg_job *
+lpfc_bsg_issue_mbox_ext_handle_job(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
+{
+ struct bsg_job_data *dd_data;
+ struct fc_bsg_job *job;
+ 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->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);
+
+ /*
+ * 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;
+ job->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 */
+ job->reply->result = 0;
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
+ "2937 SLI_CONFIG ext-buffer maibox 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 maibox "
+ "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 fc_bsg_job *job;
+
+ 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 maibox 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)
+ job->job_done(job);
+
+ 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 fc_bsg_job *job;
+
+ 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 maibox 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)
+ job->job_done(job);
+
+ 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_mse_read_cmd_ext - sli_config non-embedded mailbox cmd read
+ * @phba: Pointer to HBA context object.
+ * @mb: Pointer to a BSG mailbox object.
+ * @nemb_tp: Enumerate of non-embedded mailbox command type.
+ * @dmabuff: Pointer to a DMA buffer descriptor.
+ *
+ * This routine performs SLI_CONFIG (0x9B) read mailbox command operation with
+ * non-embedded external bufffers.
+ **/
+static int
+lpfc_bsg_sli_cfg_read_cmd_ext(struct lpfc_hba *phba, struct fc_bsg_job *job,
+ enum nemb_type nemb_tp,
+ struct lpfc_dmabuf *dmabuf)
+{
+ 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 *)job->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->context1 = 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 "
+ "maibox 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 "
+ "maibox 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.
+ * @mb: Pointer to a BSG mailbox object.
+ * @dmabuff: Pointer to a DMA buffer descriptor.
+ *
+ * This routine performs SLI_CONFIG (0x9B) write mailbox command operation with
+ * non-embedded external bufffers.
+ **/
+static int
+lpfc_bsg_sli_cfg_write_cmd_ext(struct lpfc_hba *phba, struct fc_bsg_job *job,
+ enum nemb_type nemb_tp,
+ struct lpfc_dmabuf *dmabuf)
+{
+ 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 *)job->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->context1 = 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 "
+ "maibox 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 "
+ "maibox command, rc:x%x\n", rc);
+ rc = -EPIPE;
+ goto job_error;
+ }
+
+ /* wait for additoinal external buffers */
+
+ job->reply->result = 0;
+ job->job_done(job);
+ 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.
+ * @mb: Pointer to a BSG mailbox object.
+ * @dmabuff: Pointer to a DMA buffer descriptor.
+ *
+ * This routine handles SLI_CONFIG (0x9B) mailbox command with non-embedded
+ * external bufffers, including both 0x9B with non-embedded MSEs and 0x9B
+ * with embedded sussystem 0x1 and opcodes with external HBDs.
+ **/
+static int
+lpfc_bsg_handle_sli_cfg_mbox(struct lpfc_hba *phba, struct fc_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:
+ 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_req - 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.
+ * @dmabuf: Pointer to a DMA buffer descriptor.
+ *
+ * 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 fc_bsg_job *job)
+{
+ 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;
+ job->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);
+ }
+
+ job->reply->result = 0;
+ job->job_done(job);
+
+ return SLI_CONFIG_HANDLED;
+}
+
+/**
+ * lpfc_bsg_write_ebuf_set - set the next mailbox write external buffer
+ * @phba: Pointer to HBA context 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 fc_bsg_job *job,
+ struct lpfc_dmabuf *dmabuf)
+{
+ struct lpfc_sli_config_mbox *sli_cfg_mbx;
+ 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;
+
+ sli_cfg_mbx = (struct lpfc_sli_config_mbox *)
+ phba->mbox_ext_buf_ctx.mbx_dmabuf->virt;
+
+ dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
+ if (!dd_data) {
+ rc = -ENOMEM;
+ goto job_error;
+ }
+
+ 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);
+ /* 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->context1 = 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 "
+ "maibox 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 "
+ "maibox command, rc:x%x\n", rc);
+ rc = -EPIPE;
+ goto job_error;
+ }
+
+ /* wait for additoinal external buffers */
+ job->reply->result = 0;
+ job->job_done(job);
+ return SLI_CONFIG_HANDLED;
+
+job_error:
+ 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.
+ * @mb: Pointer to a BSG mailbox object.
+ * @dmabuff: 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 fc_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.
+ * @mb: Pointer to a BSG mailbox object.
+ * @dmabuff: Pointer to a DMA buffer descriptor.
+ *
+ * This routine checkes 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 fc_bsg_job *job,
+ struct lpfc_dmabuf *dmabuf)
+{
+ struct dfc_mbox_req *mbox_req;
+ int rc = SLI_CONFIG_NOT_HANDLED;
+
+ mbox_req =
+ (struct dfc_mbox_req *)job->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.
+ * @mb: Pointer to a mailbox 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 com-plete 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 fc_bsg_job *job,
+ struct lpfc_vport *vport)
+{
+ 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 mbox_header *header;
+ struct ulp_bde64 *bde;
+ uint8_t *ext = NULL;
+ int rc = 0;
+ uint8_t *from;
+ uint32_t size;
+
+ /* in case no data is transferred */
+ job->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 *)job->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->context2 = 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
+ */
+ header = (struct mbox_header *)
+ &pmb->un.varWords[0];
+ 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->context1 = 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 ((vport->fc_flag & FC_OFFLINE_MODE) ||
+ (!(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));
+ job->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 fc_bsg_job *job)
+{
+ struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
+ struct lpfc_hba *phba = vport->phba;
+ struct dfc_mbox_req *mbox_req;
+ int rc = 0;
+
+ /* mix-and-match backward compatibility */
+ job->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 *)
+ job->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 */
+ job->reply->result = 0;
+ job->dd_data = NULL;
+ job->job_done(job);
+ } else if (rc == 1)
+ /* job submitted, will complete later*/
+ rc = 0; /* return zero, no error */
+ else {
+ /* some error occurred */
+ job->reply->result = rc;
+ job->dd_data = NULL;
+ }
+
+ return rc;
+}
+
+/**
+ * lpfc_bsg_menlo_cmd_cmp - lpfc_menlo_cmd 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_menlo_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_menlo_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_bsg_menlo *menlo;
+ unsigned long flags;
+ struct menlo_response *menlo_resp;
+ unsigned int rsp_size;
+ int rc = 0;
+
+ dd_data = cmdiocbq->context1;
+ cmp = cmdiocbq->context2;
+ bmp = cmdiocbq->context3;
+ menlo = &dd_data->context_un.menlo;
+ rmp = menlo->rmp;
+ rsp = &rspiocbq->iocb;
+
+ /* 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 job data or set the failing status for the job */
+
+ if (job) {
+ /* always return the xri, this would be used in the case
+ * of a menlo download to allow the data to be sent as a
+ * continuation of the exchange.
+ */
+
+ menlo_resp = (struct menlo_response *)
+ job->reply->reply_data.vendor_reply.vendor_rsp;
+ menlo_resp->xri = rsp->ulpContext;
+ 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_sli_release_iocbq(phba, cmdiocbq);
+ lpfc_free_bsg_buffers(phba, cmp);
+ lpfc_free_bsg_buffers(phba, rmp);
+ lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
+ kfree(bmp);
+ kfree(dd_data);
+
+ /* Complete the job if active */
+
+ if (job) {
+ job->reply->result = rc;
+ job->job_done(job);
+ }
+
+ return;
+}
+
+/**
+ * lpfc_menlo_cmd - send an ioctl for menlo hardware
+ * @job: fc_bsg_job to handle
+ *
+ * This function issues a gen request 64 CR ioctl for all menlo cmd requests,
+ * all the command completions will return the xri for the command.
+ * For menlo data requests a gen request 64 CX is used to continue the exchange
+ * supplied in the menlo request header xri field.
+ **/
+static int
+lpfc_menlo_cmd(struct fc_bsg_job *job)
+{
+ struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *cmdiocbq;
+ IOCB_t *cmd;
+ int rc = 0;
+ struct menlo_command *menlo_cmd;
+ struct menlo_response *menlo_resp;
+ struct lpfc_dmabuf *bmp = NULL, *cmp = NULL, *rmp = NULL;
+ int request_nseg;
+ int reply_nseg;
+ struct bsg_job_data *dd_data;
+ struct ulp_bde64 *bpl = NULL;
+
+ /* 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 menlo_command)) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
+ "2784 Received MENLO_CMD request below "
+ "minimum size\n");
+ rc = -ERANGE;
+ goto no_dd_data;
+ }
+
+ if (job->reply_len <
+ sizeof(struct fc_bsg_request) + sizeof(struct menlo_response)) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
+ "2785 Received MENLO_CMD reply below "
+ "minimum size\n");
+ rc = -ERANGE;
+ goto no_dd_data;
+ }
+
+ if (!(phba->menlo_flag & HBA_MENLO_SUPPORT)) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
+ "2786 Adapter does not support menlo "
+ "commands\n");
+ rc = -EPERM;
+ goto no_dd_data;
+ }
+
+ menlo_cmd = (struct menlo_command *)
+ job->request->rqst_data.h_vendor.vendor_cmd;
+
+ menlo_resp = (struct menlo_response *)
+ job->reply->reply_data.vendor_reply.vendor_rsp;
+
+ /* 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,
+ "2787 Failed allocation of dd_data\n");
+ rc = -ENOMEM;
+ goto no_dd_data;
+ }
+
+ bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
+ if (!bmp) {
+ rc = -ENOMEM;
+ goto free_dd;
+ }
+
+ 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;
+ }
+
+ cmdiocbq = lpfc_sli_get_iocbq(phba);
+ if (!cmdiocbq) {
+ rc = -ENOMEM;
+ goto free_rmp;
+ }
+
+ cmd = &cmdiocbq->iocb;
+ 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->un.genreq64.w5.hcsw.Fctl = (SI | LA);
+ cmd->un.genreq64.w5.hcsw.Dfctl = 0;
+ cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CMD;
+ cmd->un.genreq64.w5.hcsw.Type = MENLO_TRANSPORT_TYPE; /* 0xfe */
+ cmd->ulpBdeCount = 1;
+ cmd->ulpClass = CLASS3;
+ cmd->ulpOwner = OWN_CHIP;
+ cmd->ulpLe = 1; /* Limited Edition */
+ cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
+ cmdiocbq->vport = phba->pport;
+ /* We want the firmware to timeout before we do */
+ cmd->ulpTimeout = MENLO_TIMEOUT - 5;
+ cmdiocbq->iocb_cmpl = lpfc_bsg_menlo_cmd_cmp;
+ cmdiocbq->context1 = dd_data;
+ cmdiocbq->context2 = cmp;
+ cmdiocbq->context3 = bmp;
+ if (menlo_cmd->cmd == LPFC_BSG_VENDOR_MENLO_CMD) {
+ cmd->ulpCommand = CMD_GEN_REQUEST64_CR;
+ cmd->ulpPU = MENLO_PU; /* 3 */
+ cmd->un.ulpWord[4] = MENLO_DID; /* 0x0000FC0E */
+ cmd->ulpContext = MENLO_CONTEXT; /* 0 */
+ } else {
+ cmd->ulpCommand = CMD_GEN_REQUEST64_CX;
+ cmd->ulpPU = 1;
+ cmd->un.ulpWord[4] = 0;
+ cmd->ulpContext = menlo_cmd->xri;
+ }
+
+ dd_data->type = TYPE_MENLO;
+ dd_data->set_job = job;
+ dd_data->context_un.menlo.cmdiocbq = cmdiocbq;
+ dd_data->context_un.menlo.rmp = rmp;
+ job->dd_data = dd_data;
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq,
+ MENLO_TIMEOUT - 5);
+ if (rc == IOCB_SUCCESS)
+ return 0; /* done for now */
+
+ lpfc_sli_release_iocbq(phba, cmdiocbq);
+
+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_dd:
+ kfree(dd_data);
+no_dd_data:
+ /* make error code available to userspace */
+ job->reply->result = rc;
+ job->dd_data = NULL;
+ 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 fc_bsg_job *job)
+{
+ int command = job->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_MENLO_CMD:
+ case LPFC_BSG_VENDOR_MENLO_DATA:
+ rc = lpfc_menlo_cmd(job);
+ break;
+ default:
+ rc = -EINVAL;
+ job->reply->reply_payload_rcv_len = 0;
+ /* make error code available to userspace */
+ job->reply->result = rc;
+ break;
+ }
+
+ return rc;
+}
+
+/**
+ * lpfc_bsg_request - handle a bsg request from the FC transport
+ * @job: fc_bsg_job to handle
+ **/
+int
+lpfc_bsg_request(struct fc_bsg_job *job)
+{
+ uint32_t msgcode;
+ int rc;
+
+ msgcode = job->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;
+ job->reply->reply_payload_rcv_len = 0;
+ /* make error code available to userspace */
+ job->reply->result = rc;
+ break;
+ }
+
+ return rc;
+}
+
+/**
+ * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport
+ * @job: fc_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 fc_bsg_job *job)
+{
+ struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *cmdiocb;
+ struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
+ struct bsg_job_data *dd_data;
+ unsigned long flags;
+ int rc = 0;
+ LIST_HEAD(completions);
+ struct lpfc_iocbq *check_iocb, *next_iocb;
+
+ /* 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->iocb_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);
+ 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;
+ case TYPE_MENLO:
+ /* 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.menlo.cmdiocbq;
+ spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
+
+ spin_lock_irqsave(&phba->hbalock, flags);
+ 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);
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ if (!list_empty(&completions)) {
+ lpfc_sli_cancel_iocbs(phba, &completions,
+ IOSTAT_LOCAL_REJECT,
+ IOERR_SLI_ABORTED);
+ }
+ 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;
+}
Code Review / kvmfornfv.git / blobdiff