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linux/drivers/scsi/lpfc/lpfc_bsg.c
James Smart 277e76f182 [SCSI] lpfc: correct PPC build failure 
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-18 10:23:50 -06:00

2789 lines
75 KiB
C
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/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2009-2010 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/delay.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_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;
/* job waiting for this event to finish */
struct fc_bsg_job *set_job;
};
struct lpfc_bsg_iocb {
struct lpfc_iocbq *cmdiocbq;
struct lpfc_iocbq *rspiocbq;
struct lpfc_dmabuf *bmp;
struct lpfc_nodelist *ndlp;
/* job waiting for this iocb to finish */
struct fc_bsg_job *set_job;
};
struct lpfc_bsg_mbox {
LPFC_MBOXQ_t *pmboxq;
MAILBOX_t *mb;
/* job waiting for this mbox command to finish */
struct fc_bsg_job *set_job;
};
#define TYPE_EVT 1
#define TYPE_IOCB 2
#define TYPE_MBOX 3
struct bsg_job_data {
uint32_t type;
union {
struct lpfc_bsg_event *evt;
struct lpfc_bsg_iocb iocb;
struct lpfc_bsg_mbox mbox;
} context_un;
};
struct event_data {
struct list_head node;
uint32_t type;
uint32_t immed_dat;
void *data;
uint32_t len;
};
#define BUF_SZ_4K 4096
#define SLI_CT_ELX_LOOPBACK 0x10
enum ELX_LOOPBACK_CMD {
ELX_LOOPBACK_XRI_SETUP,
ELX_LOOPBACK_DATA,
};
#define ELX_LOOPBACK_HEADER_SZ \
(size_t)(&((struct lpfc_sli_ct_request *)NULL)->un)
struct lpfc_dmabufext {
struct lpfc_dmabuf dma;
uint32_t size;
uint32_t flag;
};
/**
* 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)
{
unsigned long iflags;
struct bsg_job_data *dd_data;
struct fc_bsg_job *job;
IOCB_t *rsp;
struct lpfc_dmabuf *bmp;
struct lpfc_nodelist *ndlp;
struct lpfc_bsg_iocb *iocb;
unsigned long flags;
int rc = 0;
spin_lock_irqsave(&phba->ct_ev_lock, flags);
dd_data = cmdiocbq->context1;
if (!dd_data) {
spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
return;
}
iocb = &dd_data->context_un.iocb;
job = iocb->set_job;
job->dd_data = NULL; /* so timeout handler does not reply */
spin_lock_irqsave(&phba->hbalock, iflags);
cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
if (cmdiocbq->context2 && rspiocbq)
memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
&rspiocbq->iocb, sizeof(IOCB_t));
spin_unlock_irqrestore(&phba->hbalock, iflags);
bmp = iocb->bmp;
rspiocbq = iocb->rspiocbq;
rsp = &rspiocbq->iocb;
ndlp = iocb->ndlp;
pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
job->request_payload.sg_cnt, DMA_TO_DEVICE);
pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
if (rsp->ulpStatus) {
if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
switch (rsp->un.ulpWord[4] & 0xff) {
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 =
rsp->un.genreq64.bdl.bdeSize;
lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
lpfc_sli_release_iocbq(phba, rspiocbq);
lpfc_sli_release_iocbq(phba, cmdiocbq);
lpfc_nlp_put(ndlp);
kfree(bmp);
kfree(dd_data);
/* make error code available to userspace */
job->reply->result = rc;
/* complete the job back to userspace */
job->job_done(job);
spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
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;
struct lpfc_iocbq *rspiocbq = NULL;
IOCB_t *cmd;
IOCB_t *rsp;
struct lpfc_dmabuf *bmp = NULL;
int request_nseg;
int reply_nseg;
struct scatterlist *sgel = NULL;
int numbde;
dma_addr_t busaddr;
struct bsg_job_data *dd_data;
uint32_t creg_val;
int rc = 0;
/* 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;
}
bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
if (!bmp) {
rc = -ENOMEM;
goto free_ndlp;
}
if (ndlp->nlp_flag & NLP_ELS_SND_MASK) {
rc = -ENODEV;
goto free_bmp;
}
cmdiocbq = lpfc_sli_get_iocbq(phba);
if (!cmdiocbq) {
rc = -ENOMEM;
goto free_bmp;
}
cmd = &cmdiocbq->iocb;
rspiocbq = lpfc_sli_get_iocbq(phba);
if (!rspiocbq) {
rc = -ENOMEM;
goto free_cmdiocbq;
}
rsp = &rspiocbq->iocb;
bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
if (!bmp->virt) {
rc = -ENOMEM;
goto free_rspiocbq;
}
INIT_LIST_HEAD(&bmp->list);
bpl = (struct ulp_bde64 *) bmp->virt;
request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
job->request_payload.sg_cnt, DMA_TO_DEVICE);
for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
busaddr = sg_dma_address(sgel);
bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
bpl->tus.f.bdeSize = sg_dma_len(sgel);
bpl->tus.w = cpu_to_le32(bpl->tus.w);
bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
bpl++;
}
reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list,
job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) {
busaddr = sg_dma_address(sgel);
bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
bpl->tus.f.bdeSize = sg_dma_len(sgel);
bpl->tus.w = cpu_to_le32(bpl->tus.w);
bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
bpl++;
}
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;
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 = rspiocbq;
dd_data->type = TYPE_IOCB;
dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
dd_data->context_un.iocb.rspiocbq = rspiocbq;
dd_data->context_un.iocb.set_job = job;
dd_data->context_un.iocb.bmp = bmp;
dd_data->context_un.iocb.ndlp = ndlp;
if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
creg_val = readl(phba->HCregaddr);
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)
return 0; /* done for now */
/* iocb failed so cleanup */
pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
job->request_payload.sg_cnt, DMA_TO_DEVICE);
pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
free_rspiocbq:
lpfc_sli_release_iocbq(phba, rspiocbq);
free_cmdiocbq:
lpfc_sli_release_iocbq(phba, cmdiocbq);
free_bmp:
kfree(bmp);
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 *pbuflist = NULL;
struct fc_bsg_ctels_reply *els_reply;
uint8_t *rjt_data;
unsigned long flags;
int rc = 0;
spin_lock_irqsave(&phba->ct_ev_lock, flags);
dd_data = cmdiocbq->context1;
/* normal completion and timeout crossed paths, already done */
if (!dd_data) {
spin_unlock_irqrestore(&phba->hbalock, flags);
return;
}
cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
if (cmdiocbq->context2 && rspiocbq)
memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
&rspiocbq->iocb, sizeof(IOCB_t));
job = dd_data->context_un.iocb.set_job;
cmdiocbq = dd_data->context_un.iocb.cmdiocbq;
rspiocbq = dd_data->context_un.iocb.rspiocbq;
rsp = &rspiocbq->iocb;
ndlp = dd_data->context_un.iocb.ndlp;
pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
job->request_payload.sg_cnt, DMA_TO_DEVICE);
pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
if (job->reply->result == -EAGAIN)
rc = -EAGAIN;
else if (rsp->ulpStatus == IOSTAT_SUCCESS)
job->reply->reply_payload_rcv_len =
rsp->un.elsreq64.bdl.bdeSize;
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;
pbuflist = (struct lpfc_dmabuf *) cmdiocbq->context3;
lpfc_mbuf_free(phba, pbuflist->virt, pbuflist->phys);
lpfc_sli_release_iocbq(phba, rspiocbq);
lpfc_sli_release_iocbq(phba, cmdiocbq);
lpfc_nlp_put(ndlp);
kfree(dd_data);
/* make error code available to userspace */
job->reply->result = rc;
job->dd_data = NULL;
/* complete the job back to userspace */
job->job_done(job);
spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
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;
uint32_t rspsize;
struct lpfc_iocbq *rspiocbq;
struct lpfc_iocbq *cmdiocbq;
IOCB_t *rsp;
uint16_t rpi = 0;
struct lpfc_dmabuf *pcmd;
struct lpfc_dmabuf *prsp;
struct lpfc_dmabuf *pbuflist = NULL;
struct ulp_bde64 *bpl;
int request_nseg;
int reply_nseg;
struct scatterlist *sgel = NULL;
int numbde;
dma_addr_t busaddr;
struct bsg_job_data *dd_data;
uint32_t creg_val;
int rc = 0;
/* 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,
"2735 Failed allocation of dd_data\n");
rc = -ENOMEM;
goto no_dd_data;
}
if (!lpfc_nlp_get(ndlp)) {
rc = -ENODEV;
goto free_dd_data;
}
elscmd = job->request->rqst_data.r_els.els_code;
cmdsize = job->request_payload.payload_len;
rspsize = job->reply_payload.payload_len;
rspiocbq = lpfc_sli_get_iocbq(phba);
if (!rspiocbq) {
lpfc_nlp_put(ndlp);
rc = -ENOMEM;
goto free_dd_data;
}
rsp = &rspiocbq->iocb;
rpi = ndlp->nlp_rpi;
cmdiocbq = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp,
ndlp->nlp_DID, elscmd);
if (!cmdiocbq) {
rc = -EIO;
goto free_rspiocbq;
}
/* prep els iocb set context1 to the ndlp, context2 to the command
* dmabuf, context3 holds the data dmabuf
*/
pcmd = (struct lpfc_dmabuf *) cmdiocbq->context2;
prsp = (struct lpfc_dmabuf *) pcmd->list.next;
lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
kfree(pcmd);
lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
kfree(prsp);
cmdiocbq->context2 = NULL;
pbuflist = (struct lpfc_dmabuf *) cmdiocbq->context3;
bpl = (struct ulp_bde64 *) pbuflist->virt;
request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
job->request_payload.sg_cnt, DMA_TO_DEVICE);
for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
busaddr = sg_dma_address(sgel);
bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
bpl->tus.f.bdeSize = sg_dma_len(sgel);
bpl->tus.w = cpu_to_le32(bpl->tus.w);
bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
bpl++;
}
reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list,
job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) {
busaddr = sg_dma_address(sgel);
bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
bpl->tus.f.bdeSize = sg_dma_len(sgel);
bpl->tus.w = cpu_to_le32(bpl->tus.w);
bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
bpl++;
}
cmdiocbq->iocb.un.elsreq64.bdl.bdeSize =
(request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
cmdiocbq->iocb.ulpContext = rpi;
cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
cmdiocbq->context1 = NULL;
cmdiocbq->context2 = NULL;
cmdiocbq->iocb_cmpl = lpfc_bsg_rport_els_cmp;
cmdiocbq->context1 = dd_data;
cmdiocbq->context2 = rspiocbq;
dd_data->type = TYPE_IOCB;
dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
dd_data->context_un.iocb.rspiocbq = rspiocbq;
dd_data->context_un.iocb.set_job = job;
dd_data->context_un.iocb.bmp = NULL;;
dd_data->context_un.iocb.ndlp = ndlp;
if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
creg_val = readl(phba->HCregaddr);
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);
lpfc_nlp_put(ndlp);
if (rc == IOCB_SUCCESS)
return 0; /* done for now */
pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
job->request_payload.sg_cnt, DMA_TO_DEVICE);
pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
lpfc_mbuf_free(phba, pbuflist->virt, pbuflist->phys);
lpfc_sli_release_iocbq(phba, cmdiocbq);
free_rspiocbq:
lpfc_sli_release_iocbq(phba, rspiocbq);
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);
}
/**
* 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;
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;
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:
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) % 64;
phba->ct_ctx[evt_dat->immed_dat].oxid =
piocbq->iocb.ulpContext;
phba->ct_ctx[evt_dat->immed_dat].SID =
piocbq->iocb.un.rcvels.remoteID;
} 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);
lpfc_bsg_event_unref(evt);
job = evt->set_job;
evt->set_job = NULL;
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 (evt_req_id == SLI_CT_ELX_LOOPBACK)
return 0;
return 1;
}
/**
* 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;
}
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;
}
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;
break;
}
}
spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
if (&evt->node == &phba->ct_ev_waiters) {
/* no event waiting struct yet - first call */
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;
}
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->type = TYPE_EVT;
dd_data->context_un.evt = evt;
evt->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;
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(evt, &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;
struct lpfc_nodelist *ndlp;
unsigned long flags;
int rc = 0;
spin_lock_irqsave(&phba->ct_ev_lock, flags);
dd_data = cmdiocbq->context1;
/* normal completion and timeout crossed paths, already done */
if (!dd_data) {
spin_unlock_irqrestore(&phba->hbalock, flags);
return;
}
job = dd_data->context_un.iocb.set_job;
bmp = dd_data->context_un.iocb.bmp;
rsp = &rspiocbq->iocb;
ndlp = dd_data->context_un.iocb.ndlp;
pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
job->request_payload.sg_cnt, DMA_TO_DEVICE);
if (rsp->ulpStatus) {
if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
switch (rsp->un.ulpWord[4] & 0xff) {
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 =
rsp->un.genreq64.bdl.bdeSize;
lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
lpfc_sli_release_iocbq(phba, cmdiocbq);
lpfc_nlp_put(ndlp);
kfree(bmp);
kfree(dd_data);
/* make error code available to userspace */
job->reply->result = rc;
job->dd_data = NULL;
/* complete the job back to userspace */
job->job_done(job);
spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
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 *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;
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].flags & UNSOL_VALID)) {
rc = IOCB_ERROR;
goto issue_ct_rsp_exit;
}
icmd->ulpContext = 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;
}
icmd->un.ulpWord[3] = ndlp->nlp_rpi;
/* The exchange is done, mark the entry as invalid */
phba->ct_ctx[tag].flags &= ~UNSOL_VALID;
} 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\n",
icmd->ulpContext, icmd->ulpIoTag, phba->link_state);
ctiocb->iocb_cmpl = NULL;
ctiocb->iocb_flag |= LPFC_IO_LIBDFC;
ctiocb->vport = phba->pport;
ctiocb->context3 = bmp;
ctiocb->iocb_cmpl = lpfc_issue_ct_rsp_cmp;
ctiocb->context1 = dd_data;
ctiocb->context2 = NULL;
dd_data->type = TYPE_IOCB;
dd_data->context_un.iocb.cmdiocbq = ctiocb;
dd_data->context_un.iocb.rspiocbq = NULL;
dd_data->context_un.iocb.set_job = job;
dd_data->context_un.iocb.bmp = bmp;
dd_data->context_un.iocb.ndlp = ndlp;
if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
creg_val = readl(phba->HCregaddr);
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)
return 0; /* done for now */
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;
struct scatterlist *sgel = NULL;
int request_nseg;
int numbde;
dma_addr_t busaddr;
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;
request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
job->request_payload.sg_cnt, DMA_TO_DEVICE);
for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
busaddr = sg_dma_address(sgel);
bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
bpl->tus.f.bdeSize = sg_dma_len(sgel);
bpl->tus.w = cpu_to_le32(bpl->tus.w);
bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
bpl++;
}
rc = lpfc_issue_ct_rsp(phba, job, tag, bmp, request_nseg);
if (rc == IOCB_SUCCESS)
return 0; /* done for now */
/* TBD need to handle a timeout */
pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
job->request_payload.sg_cnt, DMA_TO_DEVICE);
rc = -EACCES;
lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
send_mgmt_rsp_free_bmp:
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 - process a LPFC_BSG_VENDOR_DIAG_MODE bsg vendor command
* @job: LPFC_BSG_VENDOR_DIAG_MODE
*
* This function is responsible for placing a 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_bsg_diag_mode(struct fc_bsg_job *job)
{
struct Scsi_Host *shost = job->shost;
struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
struct lpfc_hba *phba = vport->phba;
struct diag_mode_set *loopback_mode;
struct lpfc_sli *psli = &phba->sli;
struct lpfc_sli_ring *pring = &psli->ring[LPFC_FCP_RING];
uint32_t link_flags;
uint32_t timeout;
struct lpfc_vport **vports;
LPFC_MBOXQ_t *pmboxq;
int mbxstatus;
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 below minimum "
"size\n");
rc = -EINVAL;
goto job_error;
}
loopback_mode = (struct diag_mode_set *)
job->request->rqst_data.h_vendor.vendor_cmd;
link_flags = loopback_mode->type;
timeout = loopback_mode->timeout;
if ((phba->link_state == LPFC_HBA_ERROR) ||
(psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
(!(psli->sli_flag & LPFC_SLI_ACTIVE))) {
rc = -EACCES;
goto job_error;
}
pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!pmboxq) {
rc = -ENOMEM;
goto job_error;
}
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 (pring->txcmplq_cnt) {
if (i++ > 500) /* wait up to 5 seconds */
break;
msleep(10);
}
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 {
phba->link_flag |= LS_LOOPBACK_MODE;
/* 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:
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);
}
/*
* Let SLI layer release mboxq if mbox command completed after timeout.
*/
if (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;
}
/**
* 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;
status = lpfc_reg_rpi(phba, 0, phba->pport->fc_myDID,
(uint8_t *)&phba->pport->fc_sparam, mbox, 0);
if (status) {
mempool_free(mbox, phba->mbox_mem_pool);
return ENOMEM;
}
dmabuff = (struct lpfc_dmabuf *) mbox->context1;
mbox->context1 = 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);
return ENODEV;
}
*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;
lpfc_unreg_login(phba, 0, 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);
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;
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);
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) {
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;
ret_val = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
rspiocbq,
(phba->fc_ratov * 2)
+ LPFC_DRVR_TIMEOUT);
if (ret_val)
goto err_get_xri_exit;
*txxri = rsp->ulpContext;
evt->waiting = 1;
evt->wait_time_stamp = jiffies;
ret_val = wait_event_interruptible_timeout(
evt->wq, !list_empty(&evt->events_to_see),
((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ);
if (list_empty(&evt->events_to_see))
ret_val = (ret_val) ? EINTR : ETIMEDOUT;
else {
ret_val = IOCB_SUCCESS;
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 && (ret_val != IOCB_TIMEDOUT))
lpfc_sli_release_iocbq(phba, cmdiocbq);
if (rspiocbq)
lpfc_sli_release_iocbq(phba, rspiocbq);
return ret_val;
}
/**
* 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;
}
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 recieve
* 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 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);
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;
ret_val = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
if (ret_val == 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_test - with a port in loopback issues a 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_test(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;
struct lpfc_iocbq *cmdiocbq, *rspiocbq;
IOCB_t *cmd, *rsp;
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, rxxri;
uint32_t num_bde;
uint8_t *ptr = NULL, *rx_databuf = NULL;
int rc = 0;
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 (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 = 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) {
rc = -ENOMEM;
goto loopback_test_exit;
}
rc = lpfcdiag_loop_get_xri(phba, rpi, &txxri, &rxxri);
if (rc) {
lpfcdiag_loop_self_unreg(phba, rpi);
rc = -ENOMEM;
goto loopback_test_exit;
}
rc = lpfcdiag_loop_post_rxbufs(phba, rxxri, full_size);
if (rc) {
lpfcdiag_loop_self_unreg(phba, rpi);
rc = -ENOMEM;
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);
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);
INIT_LIST_HEAD(&txbmp->list);
txbpl = (struct ulp_bde64 *) txbmp->virt;
if (txbpl)
txbuffer = diag_cmd_data_alloc(phba,
txbpl, full_size, 0);
}
if (!cmdiocbq || !rspiocbq || !txbmp || !txbpl || !txbuffer) {
rc = -ENOMEM;
goto err_loopback_test_exit;
}
cmd = &cmdiocbq->iocb;
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;
cmd->ulpContext = txxri;
cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
cmdiocbq->vport = phba->pport;
rc = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq, rspiocbq,
(phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT);
if ((rc != IOCB_SUCCESS) || (rsp->ulpStatus != IOCB_SUCCESS)) {
rc = -EIO;
goto err_loopback_test_exit;
}
evt->waiting = 1;
rc = wait_event_interruptible_timeout(
evt->wq, !list_empty(&evt->events_to_see),
((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ);
evt->waiting = 0;
if (list_empty(&evt->events_to_see))
rc = (rc) ? -EINTR : -ETIMEDOUT;
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)
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 == 0)
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_wake_mbox_wait - 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.
**/
void
lpfc_bsg_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
{
struct bsg_job_data *dd_data;
MAILBOX_t *pmb;
MAILBOX_t *mb;
struct fc_bsg_job *job;
uint32_t size;
unsigned long flags;
spin_lock_irqsave(&phba->ct_ev_lock, flags);
dd_data = pmboxq->context1;
if (!dd_data) {
spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
return;
}
pmb = &dd_data->context_un.mbox.pmboxq->u.mb;
mb = dd_data->context_un.mbox.mb;
job = dd_data->context_un.mbox.set_job;
memcpy(mb, pmb, sizeof(*pmb));
size = job->request_payload.payload_len;
job->reply->reply_payload_rcv_len =
sg_copy_from_buffer(job->reply_payload.sg_list,
job->reply_payload.sg_cnt,
mb, size);
job->reply->result = 0;
dd_data->context_un.mbox.set_job = NULL;
job->dd_data = NULL;
job->job_done(job);
spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
mempool_free(dd_data->context_un.mbox.pmboxq, phba->mbox_mem_pool);
kfree(mb);
kfree(dd_data);
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_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_STATUS:
case MBX_WRITE_EVENT_LOG:
case MBX_PORT_CAPABILITIES:
case MBX_PORT_IOV_CONTROL:
break;
case MBX_SET_VARIABLE:
case MBX_RUN_BIU_DIAG64:
case MBX_READ_EVENT_LOG:
case MBX_READ_SPARM64:
case MBX_READ_LA:
case MBX_READ_LA64:
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_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 uint32_t
lpfc_bsg_issue_mbox(struct lpfc_hba *phba, struct fc_bsg_job *job,
struct lpfc_vport *vport)
{
LPFC_MBOXQ_t *pmboxq;
MAILBOX_t *pmb;
MAILBOX_t *mb;
struct bsg_job_data *dd_data;
uint32_t size;
int rc = 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,
"2727 Failed allocation of dd_data\n");
return -ENOMEM;
}
mb = kzalloc(PAGE_SIZE, GFP_KERNEL);
if (!mb) {
kfree(dd_data);
return -ENOMEM;
}
pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!pmboxq) {
kfree(dd_data);
kfree(mb);
return -ENOMEM;
}
size = job->request_payload.payload_len;
job->reply->reply_payload_rcv_len =
sg_copy_to_buffer(job->request_payload.sg_list,
job->request_payload.sg_cnt,
mb, size);
rc = lpfc_bsg_check_cmd_access(phba, mb, vport);
if (rc != 0) {
kfree(dd_data);
kfree(mb);
mempool_free(pmboxq, phba->mbox_mem_pool);
return rc; /* must be negative */
}
memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
pmb = &pmboxq->u.mb;
memcpy(pmb, mb, sizeof(*pmb));
pmb->mbxOwner = OWN_HOST;
pmboxq->context1 = NULL;
pmboxq->vport = vport;
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) {
if (rc != MBX_TIMEOUT) {
kfree(dd_data);
kfree(mb);
mempool_free(pmboxq, phba->mbox_mem_pool);
}
return (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
}
memcpy(mb, pmb, sizeof(*pmb));
job->reply->reply_payload_rcv_len =
sg_copy_from_buffer(job->reply_payload.sg_list,
job->reply_payload.sg_cnt,
mb, size);
kfree(dd_data);
kfree(mb);
mempool_free(pmboxq, phba->mbox_mem_pool);
/* not waiting mbox already done */
return 0;
}
/* setup wake call as IOCB callback */
pmboxq->mbox_cmpl = lpfc_bsg_wake_mbox_wait;
/* setup context field to pass wait_queue pointer to wake function */
pmboxq->context1 = dd_data;
dd_data->type = TYPE_MBOX;
dd_data->context_un.mbox.pmboxq = pmboxq;
dd_data->context_un.mbox.mb = mb;
dd_data->context_un.mbox.set_job = job;
job->dd_data = dd_data;
rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
kfree(dd_data);
kfree(mb);
mempool_free(pmboxq, phba->mbox_mem_pool);
return -EIO;
}
return 1;
}
/**
* 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;
int rc = 0;
/* in case no data is transferred */
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_WARNING, LOG_LIBDFC,
"2737 Received MBOX_REQ request below "
"minimum size\n");
rc = -EINVAL;
goto job_error;
}
if (job->request_payload.payload_len != PAGE_SIZE) {
rc = -EINVAL;
goto job_error;
}
if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
rc = -EAGAIN;
goto job_error;
}
rc = lpfc_bsg_issue_mbox(phba, job, vport);
job_error:
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_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_mode(job);
break;
case LPFC_BSG_VENDOR_DIAG_TEST:
rc = lpfc_bsg_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;
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_bsg_event *evt;
struct lpfc_bsg_iocb *iocb;
struct lpfc_bsg_mbox *mbox;
struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
struct bsg_job_data *dd_data;
unsigned long flags;
spin_lock_irqsave(&phba->ct_ev_lock, flags);
dd_data = (struct bsg_job_data *)job->dd_data;
/* timeout and completion crossed paths if no dd_data */
if (!dd_data) {
spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
return 0;
}
switch (dd_data->type) {
case TYPE_IOCB:
iocb = &dd_data->context_un.iocb;
cmdiocb = iocb->cmdiocbq;
/* hint to completion handler that the job timed out */
job->reply->result = -EAGAIN;
spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
/* this will call our completion handler */
spin_lock_irq(&phba->hbalock);
lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb);
spin_unlock_irq(&phba->hbalock);
break;
case TYPE_EVT:
evt = dd_data->context_un.evt;
/* this event has no job anymore */
evt->set_job = NULL;
job->dd_data = NULL;
job->reply->reply_payload_rcv_len = 0;
/* Return -EAGAIN which is our way of signallying the
* app to retry.
*/
job->reply->result = -EAGAIN;
spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
job->job_done(job);
break;
case TYPE_MBOX:
mbox = &dd_data->context_un.mbox;
/* this mbox has no job anymore */
mbox->set_job = NULL;
job->dd_data = NULL;
job->reply->reply_payload_rcv_len = 0;
job->reply->result = -EAGAIN;
spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
job->job_done(job);
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 0;
}
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