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linux-pinenote/drivers/scsi/lpfc/lpfc_bsg.c
James Smart eb01656688 lpfc: fix low priority issues from fortify source code scan 
Fixed Low priority issues from lpfc given by fortify source code scan.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: Dick Kennedy <dick.kennedy@emulex.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-16 09:10:12 -07:00

5408 lines
150 KiB
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/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2009-2014 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->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:
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;
}
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