struct fc_bsg_job *set_job;
};
+struct lpfc_bsg_mbox {
+ LPFC_MBOXQ_t *pmboxq;
+ MAILBOX_t *mb;
+
+ /* job waiting for this mbox command to finish */
+ struct fc_bsg_job *set_job;
+};
+
#define TYPE_EVT 1
#define TYPE_IOCB 2
+#define TYPE_MBOX 3
struct bsg_job_data {
uint32_t type;
union {
struct lpfc_bsg_event *evt;
struct lpfc_bsg_iocb iocb;
+ struct lpfc_bsg_mbox mbox;
} context_un;
};
uint32_t len;
};
+#define BUF_SZ_4K 4096
#define SLI_CT_ELX_LOOPBACK 0x10
enum ELX_LOOPBACK_CMD {
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;
/**
* 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)
{
* 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
+ * 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.
/**
* 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)
{
}
/* prep els iocb set context1 to the ndlp, context2 to the command
- * dmabuf, context3 holds the data dmabuf
- */
+ * dmabuf, context3 holds the data dmabuf
+ */
pcmd = (struct lpfc_dmabuf *) cmdiocbq->context2;
prsp = (struct lpfc_dmabuf *) pcmd->list.next;
lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
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)
{
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)
{
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
-dfc_cmd_data_free(struct lpfc_hba *phba, struct lpfc_dmabufext *mlist)
+diag_cmd_data_free(struct lpfc_hba *phba, struct lpfc_dmabufext *mlist)
{
struct lpfc_dmabufext *mlast;
struct pci_dev *pcidev;
*
* 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)
} else {
switch (cmd) {
case ELX_LOOPBACK_DATA:
- dfc_cmd_data_free(phba,
+ diag_cmd_data_free(phba,
(struct lpfc_dmabufext *)
dmabuf);
break;
/**
* 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)
{
/**
* 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)
{
}
/**
- * lpfc_bsg_hst_vendor - process a vendor-specific fc_bsg_job
- * @job: fc_bsg_job to handle
- */
+ * lpfc_issue_ct_rsp_cmp - lpfc_issue_ct_rsp's completion handler
+ * @phba: Pointer to HBA context object.
+ * @cmdiocbq: Pointer to command iocb.
+ * @rspiocbq: Pointer to response iocb.
+ *
+ * This function is the completion handler for iocbs issued using
+ * lpfc_issue_ct_rsp_cmp function. This function is called by the
+ * ring event handler function without any lock held. This function
+ * can be called from both worker thread context and interrupt
+ * context. This function also can be called from other thread which
+ * cleans up the SLI layer objects.
+ * This function copy the contents of the response iocb to the
+ * response iocb memory object provided by the caller of
+ * lpfc_sli_issue_iocb_wait and then wakes up the thread which
+ * sleeps for the iocb completion.
+ **/
+static void
+lpfc_issue_ct_rsp_cmp(struct lpfc_hba *phba,
+ struct lpfc_iocbq *cmdiocbq,
+ struct lpfc_iocbq *rspiocbq)
+{
+ struct bsg_job_data *dd_data;
+ struct fc_bsg_job *job;
+ IOCB_t *rsp;
+ struct lpfc_dmabuf *bmp;
+ struct lpfc_nodelist *ndlp;
+ unsigned long flags;
+ int rc = 0;
+
+ spin_lock_irqsave(&phba->ct_ev_lock, flags);
+ dd_data = cmdiocbq->context1;
+ /* normal completion and timeout crossed paths, already done */
+ if (!dd_data) {
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ return;
+ }
+
+ job = dd_data->context_un.iocb.set_job;
+ bmp = dd_data->context_un.iocb.bmp;
+ rsp = &rspiocbq->iocb;
+ ndlp = dd_data->context_un.iocb.ndlp;
+
+ pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
+ job->request_payload.sg_cnt, DMA_TO_DEVICE);
+
+ if (rsp->ulpStatus) {
+ if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
+ switch (rsp->un.ulpWord[4] & 0xff) {
+ case IOERR_SEQUENCE_TIMEOUT:
+ rc = -ETIMEDOUT;
+ break;
+ case IOERR_INVALID_RPI:
+ rc = -EFAULT;
+ break;
+ default:
+ rc = -EACCES;
+ break;
+ }
+ } else
+ rc = -EACCES;
+ } else
+ job->reply->reply_payload_rcv_len =
+ rsp->un.genreq64.bdl.bdeSize;
+
+ lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
+ lpfc_sli_release_iocbq(phba, cmdiocbq);
+ lpfc_nlp_put(ndlp);
+ kfree(bmp);
+ kfree(dd_data);
+ /* make error code available to userspace */
+ job->reply->result = rc;
+ job->dd_data = NULL;
+ /* complete the job back to userspace */
+ job->job_done(job);
+ spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
+ return;
+}
+
+/**
+ * lpfc_issue_ct_rsp - issue a ct response
+ * @phba: Pointer to HBA context object.
+ * @job: Pointer to the job object.
+ * @tag: tag index value into the ports context exchange array.
+ * @bmp: Pointer to a dma buffer descriptor.
+ * @num_entry: Number of enties in the bde.
+ **/
static int
-lpfc_bsg_hst_vendor(struct fc_bsg_job *job)
+lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct fc_bsg_job *job, uint32_t tag,
+ struct lpfc_dmabuf *bmp, int num_entry)
{
- int command = job->request->rqst_data.h_vendor.vendor_cmd[0];
- int rc;
+ IOCB_t *icmd;
+ struct lpfc_iocbq *ctiocb = NULL;
+ int rc = 0;
+ struct lpfc_nodelist *ndlp = NULL;
+ struct bsg_job_data *dd_data;
+ uint32_t creg_val;
- switch (command) {
- case LPFC_BSG_VENDOR_SET_CT_EVENT:
- rc = lpfc_bsg_hba_set_event(job);
- break;
+ /* 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;
+ }
- case LPFC_BSG_VENDOR_GET_CT_EVENT:
- rc = lpfc_bsg_hba_get_event(job);
- break;
- default:
- rc = -EINVAL;
- job->reply->reply_payload_rcv_len = 0;
- /* make error code available to userspace */
- job->reply->result = rc;
- break;
+ /* Allocate buffer for command iocb */
+ ctiocb = lpfc_sli_get_iocbq(phba);
+ if (!ctiocb) {
+ rc = ENOMEM;
+ goto no_ctiocb;
+ }
+
+ icmd = &ctiocb->iocb;
+ icmd->un.xseq64.bdl.ulpIoTag32 = 0;
+ icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
+ icmd->un.xseq64.bdl.addrLow = putPaddrLow(bmp->phys);
+ icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
+ icmd->un.xseq64.bdl.bdeSize = (num_entry * sizeof(struct ulp_bde64));
+ icmd->un.xseq64.w5.hcsw.Fctl = (LS | LA);
+ icmd->un.xseq64.w5.hcsw.Dfctl = 0;
+ icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_SOL_CTL;
+ icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
+
+ /* Fill in rest of iocb */
+ icmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
+ icmd->ulpBdeCount = 1;
+ icmd->ulpLe = 1;
+ icmd->ulpClass = CLASS3;
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ /* Do not issue unsol response if oxid not marked as valid */
+ if (!(phba->ct_ctx[tag].flags & UNSOL_VALID)) {
+ rc = IOCB_ERROR;
+ goto issue_ct_rsp_exit;
+ }
+ icmd->ulpContext = phba->ct_ctx[tag].oxid;
+ ndlp = lpfc_findnode_did(phba->pport, phba->ct_ctx[tag].SID);
+ if (!ndlp) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
+ "2721 ndlp null for oxid %x SID %x\n",
+ icmd->ulpContext,
+ phba->ct_ctx[tag].SID);
+ rc = IOCB_ERROR;
+ goto issue_ct_rsp_exit;
+ }
+ icmd->un.ulpWord[3] = ndlp->nlp_rpi;
+ /* The exchange is done, mark the entry as invalid */
+ phba->ct_ctx[tag].flags &= ~UNSOL_VALID;
+ } else
+ icmd->ulpContext = (ushort) tag;
+
+ icmd->ulpTimeout = phba->fc_ratov * 2;
+
+ /* Xmit CT response on exchange <xid> */
+ lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
+ "2722 Xmit CT response on exchange x%x Data: x%x x%x\n",
+ icmd->ulpContext, icmd->ulpIoTag, phba->link_state);
+
+ ctiocb->iocb_cmpl = NULL;
+ ctiocb->iocb_flag |= LPFC_IO_LIBDFC;
+ ctiocb->vport = phba->pport;
+ ctiocb->context3 = bmp;
+
+ ctiocb->iocb_cmpl = lpfc_issue_ct_rsp_cmp;
+ ctiocb->context1 = dd_data;
+ ctiocb->context2 = NULL;
+ dd_data->type = TYPE_IOCB;
+ dd_data->context_un.iocb.cmdiocbq = ctiocb;
+ dd_data->context_un.iocb.rspiocbq = NULL;
+ dd_data->context_un.iocb.set_job = job;
+ dd_data->context_un.iocb.bmp = bmp;
+ dd_data->context_un.iocb.ndlp = ndlp;
+
+ if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
+ creg_val = readl(phba->HCregaddr);
+ creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
+ writel(creg_val, phba->HCregaddr);
+ readl(phba->HCregaddr); /* flush */
}
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0);
+
+ if (rc == IOCB_SUCCESS)
+ return 0; /* done for now */
+
+issue_ct_rsp_exit:
+ lpfc_sli_release_iocbq(phba, ctiocb);
+no_ctiocb:
+ kfree(dd_data);
+no_dd_data:
return rc;
}
/**
- * lpfc_bsg_request - handle a bsg request from the FC transport
- * @job: fc_bsg_job to handle
- */
-int
-lpfc_bsg_request(struct fc_bsg_job *job)
+ * 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)
{
- uint32_t msgcode;
- int rc;
+ struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
+ struct lpfc_hba *phba = vport->phba;
+ struct send_mgmt_resp *mgmt_resp = (struct send_mgmt_resp *)
+ job->request->rqst_data.h_vendor.vendor_cmd;
+ struct ulp_bde64 *bpl;
+ struct lpfc_dmabuf *bmp = NULL;
+ struct scatterlist *sgel = NULL;
+ int request_nseg;
+ int numbde;
+ dma_addr_t busaddr;
+ uint32_t tag = mgmt_resp->tag;
+ unsigned long reqbfrcnt =
+ (unsigned long)job->request_payload.payload_len;
+ int rc = 0;
- 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;
+ /* in case no data is transferred */
+ job->reply->reply_payload_rcv_len = 0;
+
+ if (!reqbfrcnt || (reqbfrcnt > (80 * BUF_SZ_4K))) {
+ rc = -ERANGE;
+ goto send_mgmt_rsp_exit;
+ }
+
+ bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
+ if (!bmp) {
+ rc = -ENOMEM;
+ goto send_mgmt_rsp_exit;
+ }
+
+ bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
+ if (!bmp->virt) {
+ rc = -ENOMEM;
+ goto send_mgmt_rsp_free_bmp;
+ }
+
+ INIT_LIST_HEAD(&bmp->list);
+ bpl = (struct ulp_bde64 *) bmp->virt;
+ request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
+ job->request_payload.sg_cnt, DMA_TO_DEVICE);
+ for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
+ busaddr = sg_dma_address(sgel);
+ bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+ bpl->tus.f.bdeSize = sg_dma_len(sgel);
+ bpl->tus.w = cpu_to_le32(bpl->tus.w);
+ bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
+ bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
+ bpl++;
}
+ rc = lpfc_issue_ct_rsp(phba, job, tag, bmp, request_nseg);
+
+ if (rc == IOCB_SUCCESS)
+ return 0; /* done for now */
+
+ /* TBD need to handle a timeout */
+ pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
+ job->request_payload.sg_cnt, DMA_TO_DEVICE);
+ rc = -EACCES;
+ lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
+
+send_mgmt_rsp_free_bmp:
+ kfree(bmp);
+send_mgmt_rsp_exit:
+ /* make error code available to userspace */
+ job->reply->result = rc;
+ job->dd_data = NULL;
return rc;
}
/**
- * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport
- * @job: fc_bsg_job that has timed out
+ * lpfc_bsg_diag_mode - process a LPFC_BSG_VENDOR_DIAG_MODE bsg vendor command
+ * @job: LPFC_BSG_VENDOR_DIAG_MODE
*
- * 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
+ * This function is responsible for placing a port into diagnostic loopback
+ * mode in order to perform a diagnostic loopback test.
+ * All new scsi requests are blocked, a small delay is used to allow the
+ * scsi requests to complete then the link is brought down. If the link is
+ * is placed in loopback mode then scsi requests are again allowed
+ * so the scsi mid-layer doesn't give up on the port.
+ * All of this is done in-line.
*/
-int
-lpfc_bsg_timeout(struct fc_bsg_job *job)
+static int
+lpfc_bsg_diag_mode(struct fc_bsg_job *job)
{
+ struct Scsi_Host *shost = job->shost;
struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
struct lpfc_hba *phba = vport->phba;
- struct lpfc_iocbq *cmdiocb;
- struct lpfc_bsg_event *evt;
- struct lpfc_bsg_iocb *iocb;
- struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
- struct bsg_job_data *dd_data;
- unsigned long flags;
+ struct diag_mode_set *loopback_mode;
+ struct lpfc_sli *psli = &phba->sli;
+ struct lpfc_sli_ring *pring = &psli->ring[LPFC_FCP_RING];
+ uint32_t link_flags;
+ uint32_t timeout;
+ struct lpfc_vport **vports;
+ LPFC_MBOXQ_t *pmboxq;
+ int mbxstatus;
+ int i = 0;
+ int rc = 0;
- spin_lock_irqsave(&phba->ct_ev_lock, flags);
- dd_data = (struct bsg_job_data *)job->dd_data;
- /* timeout and completion crossed paths if no dd_data */
- if (!dd_data) {
- spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
- return 0;
+ /* no data to return just the return code */
+ job->reply->reply_payload_rcv_len = 0;
+
+ if (job->request_len <
+ sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_set)) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
+ "2738 Received DIAG MODE request below minimum "
+ "size\n");
+ rc = -EINVAL;
+ goto job_error;
+ }
+
+ loopback_mode = (struct diag_mode_set *)
+ job->request->rqst_data.h_vendor.vendor_cmd;
+ link_flags = loopback_mode->type;
+ timeout = loopback_mode->timeout;
+
+ if ((phba->link_state == LPFC_HBA_ERROR) ||
+ (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
+ (!(psli->sli_flag & LPFC_SLI_ACTIVE))) {
+ rc = -EACCES;
+ goto job_error;
+ }
+
+ pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!pmboxq) {
+ rc = -ENOMEM;
+ goto job_error;
+ }
+
+ vports = lpfc_create_vport_work_array(phba);
+ if (vports) {
+ for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
+ shost = lpfc_shost_from_vport(vports[i]);
+ scsi_block_requests(shost);
+ }
+
+ lpfc_destroy_vport_work_array(phba, vports);
+ } else {
+ shost = lpfc_shost_from_vport(phba->pport);
+ scsi_block_requests(shost);
+ }
+
+ while (pring->txcmplq_cnt) {
+ if (i++ > 500) /* wait up to 5 seconds */
+ break;
+
+ msleep(10);
+ }
+
+ memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
+ pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
+ pmboxq->u.mb.mbxOwner = OWN_HOST;
+
+ mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
+
+ if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0)) {
+ /* wait for link down before proceeding */
+ i = 0;
+ while (phba->link_state != LPFC_LINK_DOWN) {
+ if (i++ > timeout) {
+ rc = -ETIMEDOUT;
+ goto loopback_mode_exit;
+ }
+
+ msleep(10);
+ }
+
+ memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
+ if (link_flags == INTERNAL_LOOP_BACK)
+ pmboxq->u.mb.un.varInitLnk.link_flags = FLAGS_LOCAL_LB;
+ else
+ pmboxq->u.mb.un.varInitLnk.link_flags =
+ FLAGS_TOPOLOGY_MODE_LOOP;
+
+ pmboxq->u.mb.mbxCommand = MBX_INIT_LINK;
+ pmboxq->u.mb.mbxOwner = OWN_HOST;
+
+ mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
+ LPFC_MBOX_TMO);
+
+ if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus))
+ rc = -ENODEV;
+ else {
+ phba->link_flag |= LS_LOOPBACK_MODE;
+ /* wait for the link attention interrupt */
+ msleep(100);
+
+ i = 0;
+ while (phba->link_state != LPFC_HBA_READY) {
+ if (i++ > timeout) {
+ rc = -ETIMEDOUT;
+ break;
+ }
+
+ msleep(10);
+ }
+ }
+
+ } else
+ rc = -ENODEV;
+
+loopback_mode_exit:
+ vports = lpfc_create_vport_work_array(phba);
+ if (vports) {
+ for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
+ shost = lpfc_shost_from_vport(vports[i]);
+ scsi_unblock_requests(shost);
+ }
+ lpfc_destroy_vport_work_array(phba, vports);
+ } else {
+ shost = lpfc_shost_from_vport(phba->pport);
+ scsi_unblock_requests(shost);
+ }
+
+ /*
+ * Let SLI layer release mboxq if mbox command completed after timeout.
+ */
+ if (mbxstatus != MBX_TIMEOUT)
+ mempool_free(pmboxq, phba->mbox_mem_pool);
+
+job_error:
+ /* make error code available to userspace */
+ job->reply->result = rc;
+ /* complete the job back to userspace if no error */
+ if (rc == 0)
+ job->job_done(job);
+ return rc;
+}
+
+/**
+ * lpfcdiag_loop_self_reg - obtains a remote port login id
+ * @phba: Pointer to HBA context object
+ * @rpi: Pointer to a remote port login id
+ *
+ * This function obtains a remote port login id so the diag loopback test
+ * can send and receive its own unsolicited CT command.
+ **/
+static int lpfcdiag_loop_self_reg(struct lpfc_hba *phba, uint16_t * rpi)
+{
+ LPFC_MBOXQ_t *mbox;
+ struct lpfc_dmabuf *dmabuff;
+ int status;
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return ENOMEM;
+
+ status = lpfc_reg_rpi(phba, 0, phba->pport->fc_myDID,
+ (uint8_t *)&phba->pport->fc_sparam, mbox, 0);
+ if (status) {
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return ENOMEM;
+ }
+
+ dmabuff = (struct lpfc_dmabuf *) mbox->context1;
+ mbox->context1 = NULL;
+ status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
+
+ if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
+ lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
+ kfree(dmabuff);
+ if (status != MBX_TIMEOUT)
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return ENODEV;
+ }
+
+ *rpi = mbox->u.mb.un.varWords[0];
+
+ lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
+ kfree(dmabuff);
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return 0;
+}
+
+/**
+ * lpfcdiag_loop_self_unreg - unregs from the rpi
+ * @phba: Pointer to HBA context object
+ * @rpi: Remote port login id
+ *
+ * This function unregisters the rpi obtained in lpfcdiag_loop_self_reg
+ **/
+static int lpfcdiag_loop_self_unreg(struct lpfc_hba *phba, uint16_t rpi)
+{
+ LPFC_MBOXQ_t *mbox;
+ int status;
+
+ /* Allocate mboxq structure */
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (mbox == NULL)
+ return ENOMEM;
+
+ lpfc_unreg_login(phba, 0, rpi, mbox);
+ status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
+
+ if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
+ if (status != MBX_TIMEOUT)
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return EIO;
+ }
+
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return 0;
+}
+
+/**
+ * lpfcdiag_loop_get_xri - obtains the transmit and receive ids
+ * @phba: Pointer to HBA context object
+ * @rpi: Remote port login id
+ * @txxri: Pointer to transmit exchange id
+ * @rxxri: Pointer to response exchabge id
+ *
+ * This function obtains the transmit and receive ids required to send
+ * an unsolicited ct command with a payload. A special lpfc FsType and CmdRsp
+ * flags are used to the unsolicted response handler is able to process
+ * the ct command sent on the same port.
+ **/
+static int lpfcdiag_loop_get_xri(struct lpfc_hba *phba, uint16_t rpi,
+ uint16_t *txxri, uint16_t * rxxri)
+{
+ struct lpfc_bsg_event *evt;
+ struct lpfc_iocbq *cmdiocbq, *rspiocbq;
+ IOCB_t *cmd, *rsp;
+ struct lpfc_dmabuf *dmabuf;
+ struct ulp_bde64 *bpl = NULL;
+ struct lpfc_sli_ct_request *ctreq = NULL;
+ int ret_val = 0;
+ unsigned long flags;
+
+ *txxri = 0;
+ *rxxri = 0;
+ evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
+ SLI_CT_ELX_LOOPBACK);
+ if (!evt)
+ return ENOMEM;
+
+ spin_lock_irqsave(&phba->ct_ev_lock, flags);
+ list_add(&evt->node, &phba->ct_ev_waiters);
+ lpfc_bsg_event_ref(evt);
+ spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
+
+ cmdiocbq = lpfc_sli_get_iocbq(phba);
+ rspiocbq = lpfc_sli_get_iocbq(phba);
+
+ dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
+ if (dmabuf) {
+ dmabuf->virt = lpfc_mbuf_alloc(phba, 0, &dmabuf->phys);
+ INIT_LIST_HEAD(&dmabuf->list);
+ bpl = (struct ulp_bde64 *) dmabuf->virt;
+ memset(bpl, 0, sizeof(*bpl));
+ ctreq = (struct lpfc_sli_ct_request *)(bpl + 1);
+ bpl->addrHigh =
+ le32_to_cpu(putPaddrHigh(dmabuf->phys + sizeof(*bpl)));
+ bpl->addrLow =
+ le32_to_cpu(putPaddrLow(dmabuf->phys + sizeof(*bpl)));
+ bpl->tus.f.bdeFlags = 0;
+ bpl->tus.f.bdeSize = ELX_LOOPBACK_HEADER_SZ;
+ bpl->tus.w = le32_to_cpu(bpl->tus.w);
+ }
+
+ if (cmdiocbq == NULL || rspiocbq == NULL ||
+ dmabuf == NULL || bpl == NULL || ctreq == NULL) {
+ ret_val = ENOMEM;
+ goto err_get_xri_exit;
+ }
+
+ cmd = &cmdiocbq->iocb;
+ rsp = &rspiocbq->iocb;
+
+ memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
+
+ ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
+ ctreq->RevisionId.bits.InId = 0;
+ ctreq->FsType = SLI_CT_ELX_LOOPBACK;
+ ctreq->FsSubType = 0;
+ ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_XRI_SETUP;
+ ctreq->CommandResponse.bits.Size = 0;
+
+
+ cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(dmabuf->phys);
+ cmd->un.xseq64.bdl.addrLow = putPaddrLow(dmabuf->phys);
+ cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
+ cmd->un.xseq64.bdl.bdeSize = sizeof(*bpl);
+
+ cmd->un.xseq64.w5.hcsw.Fctl = LA;
+ cmd->un.xseq64.w5.hcsw.Dfctl = 0;
+ cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
+ cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
+
+ cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CR;
+ cmd->ulpBdeCount = 1;
+ cmd->ulpLe = 1;
+ cmd->ulpClass = CLASS3;
+ cmd->ulpContext = rpi;
+
+ cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
+ cmdiocbq->vport = phba->pport;
+
+ ret_val = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
+ rspiocbq,
+ (phba->fc_ratov * 2)
+ + LPFC_DRVR_TIMEOUT);
+ if (ret_val)
+ goto err_get_xri_exit;
+
+ *txxri = rsp->ulpContext;
+
+ evt->waiting = 1;
+ evt->wait_time_stamp = jiffies;
+ ret_val = wait_event_interruptible_timeout(
+ evt->wq, !list_empty(&evt->events_to_see),
+ ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ);
+ if (list_empty(&evt->events_to_see))
+ ret_val = (ret_val) ? EINTR : ETIMEDOUT;
+ else {
+ ret_val = IOCB_SUCCESS;
+ spin_lock_irqsave(&phba->ct_ev_lock, flags);
+ list_move(evt->events_to_see.prev, &evt->events_to_get);
+ spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
+ *rxxri = (list_entry(evt->events_to_get.prev,
+ typeof(struct event_data),
+ node))->immed_dat;
+ }
+ evt->waiting = 0;
+
+err_get_xri_exit:
+ spin_lock_irqsave(&phba->ct_ev_lock, flags);
+ lpfc_bsg_event_unref(evt); /* release ref */
+ lpfc_bsg_event_unref(evt); /* delete */
+ spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
+
+ if (dmabuf) {
+ if (dmabuf->virt)
+ lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
+ kfree(dmabuf);
+ }
+
+ if (cmdiocbq && (ret_val != IOCB_TIMEDOUT))
+ lpfc_sli_release_iocbq(phba, cmdiocbq);
+ if (rspiocbq)
+ lpfc_sli_release_iocbq(phba, rspiocbq);
+ return ret_val;
+}
+
+/**
+ * diag_cmd_data_alloc - fills in a bde struct with dma buffers
+ * @phba: Pointer to HBA context object
+ * @bpl: Pointer to 64 bit bde structure
+ * @size: Number of bytes to process
+ * @nocopydata: Flag to copy user data into the allocated buffer
+ *
+ * This function allocates page size buffers and populates an lpfc_dmabufext.
+ * If allowed the user data pointed to with indataptr is copied into the kernel
+ * memory. The chained list of page size buffers is returned.
+ **/
+static struct lpfc_dmabufext *
+diag_cmd_data_alloc(struct lpfc_hba *phba,
+ struct ulp_bde64 *bpl, uint32_t size,
+ int nocopydata)
+{
+ struct lpfc_dmabufext *mlist = NULL;
+ struct lpfc_dmabufext *dmp;
+ int cnt, offset = 0, i = 0;
+ struct pci_dev *pcidev;
+
+ pcidev = phba->pcidev;
+
+ while (size) {
+ /* We get chunks of 4K */
+ if (size > BUF_SZ_4K)
+ cnt = BUF_SZ_4K;
+ else
+ cnt = size;
+
+ /* allocate struct lpfc_dmabufext buffer header */
+ dmp = kmalloc(sizeof(struct lpfc_dmabufext), GFP_KERNEL);
+ if (!dmp)
+ goto out;
+
+ INIT_LIST_HEAD(&dmp->dma.list);
+
+ /* Queue it to a linked list */
+ if (mlist)
+ list_add_tail(&dmp->dma.list, &mlist->dma.list);
+ else
+ mlist = dmp;
+
+ /* allocate buffer */
+ dmp->dma.virt = dma_alloc_coherent(&pcidev->dev,
+ cnt,
+ &(dmp->dma.phys),
+ GFP_KERNEL);
+
+ if (!dmp->dma.virt)
+ goto out;
+
+ dmp->size = cnt;
+
+ if (nocopydata) {
+ bpl->tus.f.bdeFlags = 0;
+ pci_dma_sync_single_for_device(phba->pcidev,
+ dmp->dma.phys, LPFC_BPL_SIZE, PCI_DMA_TODEVICE);
+
+ } else {
+ memset((uint8_t *)dmp->dma.virt, 0, cnt);
+ bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
+ }
+
+ /* build buffer ptr list for IOCB */
+ bpl->addrLow = le32_to_cpu(putPaddrLow(dmp->dma.phys));
+ bpl->addrHigh = le32_to_cpu(putPaddrHigh(dmp->dma.phys));
+ bpl->tus.f.bdeSize = (ushort) cnt;
+ bpl->tus.w = le32_to_cpu(bpl->tus.w);
+ bpl++;
+
+ i++;
+ offset += cnt;
+ size -= cnt;
+ }
+
+ mlist->flag = i;
+ return mlist;
+out:
+ diag_cmd_data_free(phba, mlist);
+ return NULL;
+}
+
+/**
+ * lpfcdiag_loop_post_rxbufs - post the receive buffers for an unsol CT cmd
+ * @phba: Pointer to HBA context object
+ * @rxxri: Receive exchange id
+ * @len: Number of data bytes
+ *
+ * This function allocates and posts a data buffer of sufficient size to recieve
+ * an unsolicted CT command.
+ **/
+static int lpfcdiag_loop_post_rxbufs(struct lpfc_hba *phba, uint16_t rxxri,
+ size_t len)
+{
+ struct lpfc_sli *psli = &phba->sli;
+ struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
+ struct lpfc_iocbq *cmdiocbq;
+ IOCB_t *cmd = NULL;
+ struct list_head head, *curr, *next;
+ struct lpfc_dmabuf *rxbmp;
+ struct lpfc_dmabuf *dmp;
+ struct lpfc_dmabuf *mp[2] = {NULL, NULL};
+ struct ulp_bde64 *rxbpl = NULL;
+ uint32_t num_bde;
+ struct lpfc_dmabufext *rxbuffer = NULL;
+ int ret_val = 0;
+ int i = 0;
+
+ cmdiocbq = lpfc_sli_get_iocbq(phba);
+ rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
+ if (rxbmp != NULL) {
+ rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
+ INIT_LIST_HEAD(&rxbmp->list);
+ rxbpl = (struct ulp_bde64 *) rxbmp->virt;
+ rxbuffer = diag_cmd_data_alloc(phba, rxbpl, len, 0);
+ }
+
+ if (!cmdiocbq || !rxbmp || !rxbpl || !rxbuffer) {
+ ret_val = ENOMEM;
+ goto err_post_rxbufs_exit;
+ }
+
+ /* Queue buffers for the receive exchange */
+ num_bde = (uint32_t)rxbuffer->flag;
+ dmp = &rxbuffer->dma;
+
+ cmd = &cmdiocbq->iocb;
+ i = 0;
+
+ INIT_LIST_HEAD(&head);
+ list_add_tail(&head, &dmp->list);
+ list_for_each_safe(curr, next, &head) {
+ mp[i] = list_entry(curr, struct lpfc_dmabuf, list);
+ list_del(curr);
+
+ if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
+ mp[i]->buffer_tag = lpfc_sli_get_buffer_tag(phba);
+ cmd->un.quexri64cx.buff.bde.addrHigh =
+ putPaddrHigh(mp[i]->phys);
+ cmd->un.quexri64cx.buff.bde.addrLow =
+ putPaddrLow(mp[i]->phys);
+ cmd->un.quexri64cx.buff.bde.tus.f.bdeSize =
+ ((struct lpfc_dmabufext *)mp[i])->size;
+ cmd->un.quexri64cx.buff.buffer_tag = mp[i]->buffer_tag;
+ cmd->ulpCommand = CMD_QUE_XRI64_CX;
+ cmd->ulpPU = 0;
+ cmd->ulpLe = 1;
+ cmd->ulpBdeCount = 1;
+ cmd->unsli3.que_xri64cx_ext_words.ebde_count = 0;
+
+ } else {
+ cmd->un.cont64[i].addrHigh = putPaddrHigh(mp[i]->phys);
+ cmd->un.cont64[i].addrLow = putPaddrLow(mp[i]->phys);
+ cmd->un.cont64[i].tus.f.bdeSize =
+ ((struct lpfc_dmabufext *)mp[i])->size;
+ cmd->ulpBdeCount = ++i;
+
+ if ((--num_bde > 0) && (i < 2))
+ continue;
+
+ cmd->ulpCommand = CMD_QUE_XRI_BUF64_CX;
+ cmd->ulpLe = 1;
+ }
+
+ cmd->ulpClass = CLASS3;
+ cmd->ulpContext = rxxri;
+
+ ret_val = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
+
+ if (ret_val == IOCB_ERROR) {
+ diag_cmd_data_free(phba,
+ (struct lpfc_dmabufext *)mp[0]);
+ if (mp[1])
+ diag_cmd_data_free(phba,
+ (struct lpfc_dmabufext *)mp[1]);
+ dmp = list_entry(next, struct lpfc_dmabuf, list);
+ ret_val = EIO;
+ goto err_post_rxbufs_exit;
+ }
+
+ lpfc_sli_ringpostbuf_put(phba, pring, mp[0]);
+ if (mp[1]) {
+ lpfc_sli_ringpostbuf_put(phba, pring, mp[1]);
+ mp[1] = NULL;
+ }
+
+ /* The iocb was freed by lpfc_sli_issue_iocb */
+ cmdiocbq = lpfc_sli_get_iocbq(phba);
+ if (!cmdiocbq) {
+ dmp = list_entry(next, struct lpfc_dmabuf, list);
+ ret_val = EIO;
+ goto err_post_rxbufs_exit;
+ }
+
+ cmd = &cmdiocbq->iocb;
+ i = 0;
+ }
+ list_del(&head);
+
+err_post_rxbufs_exit:
+
+ if (rxbmp) {
+ if (rxbmp->virt)
+ lpfc_mbuf_free(phba, rxbmp->virt, rxbmp->phys);
+ kfree(rxbmp);
+ }
+
+ if (cmdiocbq)
+ lpfc_sli_release_iocbq(phba, cmdiocbq);
+ return ret_val;
+}
+
+/**
+ * lpfc_bsg_diag_test - with a port in loopback issues a Ct cmd to itself
+ * @job: LPFC_BSG_VENDOR_DIAG_TEST fc_bsg_job
+ *
+ * This function receives a user data buffer to be transmitted and received on
+ * the same port, the link must be up and in loopback mode prior
+ * to being called.
+ * 1. A kernel buffer is allocated to copy the user data into.
+ * 2. The port registers with "itself".
+ * 3. The transmit and receive exchange ids are obtained.
+ * 4. The receive exchange id is posted.
+ * 5. A new els loopback event is created.
+ * 6. The command and response iocbs are allocated.
+ * 7. The cmd iocb FsType is set to elx loopback and the CmdRsp to looppback.
+ *
+ * This function is meant to be called n times while the port is in loopback
+ * so it is the apps responsibility to issue a reset to take the port out
+ * of loopback mode.
+ **/
+static int
+lpfc_bsg_diag_test(struct fc_bsg_job *job)
+{
+ struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
+ struct lpfc_hba *phba = vport->phba;
+ struct diag_mode_test *diag_mode;
+ struct lpfc_bsg_event *evt;
+ struct event_data *evdat;
+ struct lpfc_sli *psli = &phba->sli;
+ uint32_t size;
+ uint32_t full_size;
+ size_t segment_len = 0, segment_offset = 0, current_offset = 0;
+ uint16_t rpi;
+ struct lpfc_iocbq *cmdiocbq, *rspiocbq;
+ IOCB_t *cmd, *rsp;
+ struct lpfc_sli_ct_request *ctreq;
+ struct lpfc_dmabuf *txbmp;
+ struct ulp_bde64 *txbpl = NULL;
+ struct lpfc_dmabufext *txbuffer = NULL;
+ struct list_head head;
+ struct lpfc_dmabuf *curr;
+ uint16_t txxri, rxxri;
+ uint32_t num_bde;
+ uint8_t *ptr = NULL, *rx_databuf = NULL;
+ int rc = 0;
+ unsigned long flags;
+ void *dataout = NULL;
+ uint32_t total_mem;
+
+ /* in case no data is returned return just the return code */
+ job->reply->reply_payload_rcv_len = 0;
+
+ if (job->request_len <
+ sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_test)) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
+ "2739 Received DIAG TEST request below minimum "
+ "size\n");
+ rc = -EINVAL;
+ goto loopback_test_exit;
+ }
+
+ if (job->request_payload.payload_len !=
+ job->reply_payload.payload_len) {
+ rc = -EINVAL;
+ goto loopback_test_exit;
+ }
+
+ diag_mode = (struct diag_mode_test *)
+ job->request->rqst_data.h_vendor.vendor_cmd;
+
+ if ((phba->link_state == LPFC_HBA_ERROR) ||
+ (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
+ (!(psli->sli_flag & LPFC_SLI_ACTIVE))) {
+ rc = -EACCES;
+ goto loopback_test_exit;
+ }
+
+ if (!lpfc_is_link_up(phba) || !(phba->link_flag & LS_LOOPBACK_MODE)) {
+ rc = -EACCES;
+ goto loopback_test_exit;
+ }
+
+ size = job->request_payload.payload_len;
+ full_size = size + ELX_LOOPBACK_HEADER_SZ; /* plus the header */
+
+ if ((size == 0) || (size > 80 * BUF_SZ_4K)) {
+ rc = -ERANGE;
+ goto loopback_test_exit;
+ }
+
+ if (size >= BUF_SZ_4K) {
+ /*
+ * Allocate memory for ioctl data. If buffer is bigger than 64k,
+ * then we allocate 64k and re-use that buffer over and over to
+ * xfer the whole block. This is because Linux kernel has a
+ * problem allocating more than 120k of kernel space memory. Saw
+ * problem with GET_FCPTARGETMAPPING...
+ */
+ if (size <= (64 * 1024))
+ total_mem = size;
+ else
+ total_mem = 64 * 1024;
+ } else
+ /* Allocate memory for ioctl data */
+ total_mem = BUF_SZ_4K;
+
+ dataout = kmalloc(total_mem, GFP_KERNEL);
+ if (dataout == NULL) {
+ rc = -ENOMEM;
+ goto loopback_test_exit;
+ }
+
+ ptr = dataout;
+ ptr += ELX_LOOPBACK_HEADER_SZ;
+ sg_copy_to_buffer(job->request_payload.sg_list,
+ job->request_payload.sg_cnt,
+ ptr, size);
+
+ rc = lpfcdiag_loop_self_reg(phba, &rpi);
+ if (rc) {
+ rc = -ENOMEM;
+ goto loopback_test_exit;
+ }
+
+ rc = lpfcdiag_loop_get_xri(phba, rpi, &txxri, &rxxri);
+ if (rc) {
+ lpfcdiag_loop_self_unreg(phba, rpi);
+ rc = -ENOMEM;
+ goto loopback_test_exit;
+ }
+
+ rc = lpfcdiag_loop_post_rxbufs(phba, rxxri, full_size);
+ if (rc) {
+ lpfcdiag_loop_self_unreg(phba, rpi);
+ rc = -ENOMEM;
+ goto loopback_test_exit;
+ }
+
+ evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
+ SLI_CT_ELX_LOOPBACK);
+ if (!evt) {
+ lpfcdiag_loop_self_unreg(phba, rpi);
+ rc = -ENOMEM;
+ goto loopback_test_exit;
+ }
+
+ spin_lock_irqsave(&phba->ct_ev_lock, flags);
+ list_add(&evt->node, &phba->ct_ev_waiters);
+ lpfc_bsg_event_ref(evt);
+ spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
+
+ cmdiocbq = lpfc_sli_get_iocbq(phba);
+ rspiocbq = lpfc_sli_get_iocbq(phba);
+ txbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
+
+ if (txbmp) {
+ txbmp->virt = lpfc_mbuf_alloc(phba, 0, &txbmp->phys);
+ INIT_LIST_HEAD(&txbmp->list);
+ txbpl = (struct ulp_bde64 *) txbmp->virt;
+ if (txbpl)
+ txbuffer = diag_cmd_data_alloc(phba,
+ txbpl, full_size, 0);
+ }
+
+ if (!cmdiocbq || !rspiocbq || !txbmp || !txbpl || !txbuffer) {
+ rc = -ENOMEM;
+ goto err_loopback_test_exit;
+ }
+
+ cmd = &cmdiocbq->iocb;
+ rsp = &rspiocbq->iocb;
+
+ INIT_LIST_HEAD(&head);
+ list_add_tail(&head, &txbuffer->dma.list);
+ list_for_each_entry(curr, &head, list) {
+ segment_len = ((struct lpfc_dmabufext *)curr)->size;
+ if (current_offset == 0) {
+ ctreq = curr->virt;
+ memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
+ ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
+ ctreq->RevisionId.bits.InId = 0;
+ ctreq->FsType = SLI_CT_ELX_LOOPBACK;
+ ctreq->FsSubType = 0;
+ ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_DATA;
+ ctreq->CommandResponse.bits.Size = size;
+ segment_offset = ELX_LOOPBACK_HEADER_SZ;
+ } else
+ segment_offset = 0;
+
+ BUG_ON(segment_offset >= segment_len);
+ memcpy(curr->virt + segment_offset,
+ ptr + current_offset,
+ segment_len - segment_offset);
+
+ current_offset += segment_len - segment_offset;
+ BUG_ON(current_offset > size);
+ }
+ list_del(&head);
+
+ /* Build the XMIT_SEQUENCE iocb */
+
+ num_bde = (uint32_t)txbuffer->flag;
+
+ cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(txbmp->phys);
+ cmd->un.xseq64.bdl.addrLow = putPaddrLow(txbmp->phys);
+ cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
+ cmd->un.xseq64.bdl.bdeSize = (num_bde * sizeof(struct ulp_bde64));
+
+ cmd->un.xseq64.w5.hcsw.Fctl = (LS | LA);
+ cmd->un.xseq64.w5.hcsw.Dfctl = 0;
+ cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
+ cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
+
+ cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
+ cmd->ulpBdeCount = 1;
+ cmd->ulpLe = 1;
+ cmd->ulpClass = CLASS3;
+ cmd->ulpContext = txxri;
+
+ cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
+ cmdiocbq->vport = phba->pport;
+
+ rc = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq, rspiocbq,
+ (phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT);
+
+ if ((rc != IOCB_SUCCESS) || (rsp->ulpStatus != IOCB_SUCCESS)) {
+ rc = -EIO;
+ goto err_loopback_test_exit;
+ }
+
+ evt->waiting = 1;
+ rc = wait_event_interruptible_timeout(
+ evt->wq, !list_empty(&evt->events_to_see),
+ ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ);
+ evt->waiting = 0;
+ if (list_empty(&evt->events_to_see))
+ rc = (rc) ? -EINTR : -ETIMEDOUT;
+ else {
+ spin_lock_irqsave(&phba->ct_ev_lock, flags);
+ list_move(evt->events_to_see.prev, &evt->events_to_get);
+ evdat = list_entry(evt->events_to_get.prev,
+ typeof(*evdat), node);
+ spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
+ rx_databuf = evdat->data;
+ if (evdat->len != full_size) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
+ "1603 Loopback test did not receive expected "
+ "data length. actual length 0x%x expected "
+ "length 0x%x\n",
+ evdat->len, full_size);
+ rc = -EIO;
+ } else if (rx_databuf == NULL)
+ rc = -EIO;
+ else {
+ rc = IOCB_SUCCESS;
+ /* skip over elx loopback header */
+ rx_databuf += ELX_LOOPBACK_HEADER_SZ;
+ job->reply->reply_payload_rcv_len =
+ sg_copy_from_buffer(job->reply_payload.sg_list,
+ job->reply_payload.sg_cnt,
+ rx_databuf, size);
+ job->reply->reply_payload_rcv_len = size;
+ }
+ }
+
+err_loopback_test_exit:
+ lpfcdiag_loop_self_unreg(phba, rpi);
+
+ spin_lock_irqsave(&phba->ct_ev_lock, flags);
+ lpfc_bsg_event_unref(evt); /* release ref */
+ lpfc_bsg_event_unref(evt); /* delete */
+ spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
+
+ if (cmdiocbq != NULL)
+ lpfc_sli_release_iocbq(phba, cmdiocbq);
+
+ if (rspiocbq != NULL)
+ lpfc_sli_release_iocbq(phba, rspiocbq);
+
+ if (txbmp != NULL) {
+ if (txbpl != NULL) {
+ if (txbuffer != NULL)
+ diag_cmd_data_free(phba, txbuffer);
+ lpfc_mbuf_free(phba, txbmp->virt, txbmp->phys);
+ }
+ kfree(txbmp);
+ }
+
+loopback_test_exit:
+ kfree(dataout);
+ /* make error code available to userspace */
+ job->reply->result = rc;
+ job->dd_data = NULL;
+ /* complete the job back to userspace if no error */
+ if (rc == 0)
+ job->job_done(job);
+ return rc;
+}
+
+/**
+ * lpfc_bsg_get_dfc_rev - process a GET_DFC_REV bsg vendor command
+ * @job: GET_DFC_REV fc_bsg_job
+ **/
+static int
+lpfc_bsg_get_dfc_rev(struct fc_bsg_job *job)
+{
+ struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
+ struct lpfc_hba *phba = vport->phba;
+ struct get_mgmt_rev *event_req;
+ struct get_mgmt_rev_reply *event_reply;
+ int rc = 0;
+
+ if (job->request_len <
+ sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev)) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
+ "2740 Received GET_DFC_REV request below "
+ "minimum size\n");
+ rc = -EINVAL;
+ goto job_error;
+ }
+
+ event_req = (struct get_mgmt_rev *)
+ job->request->rqst_data.h_vendor.vendor_cmd;
+
+ event_reply = (struct get_mgmt_rev_reply *)
+ job->reply->reply_data.vendor_reply.vendor_rsp;
+
+ if (job->reply_len <
+ sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev_reply)) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
+ "2741 Received GET_DFC_REV reply below "
+ "minimum size\n");
+ rc = -EINVAL;
+ goto job_error;
+ }
+
+ event_reply->info.a_Major = MANAGEMENT_MAJOR_REV;
+ event_reply->info.a_Minor = MANAGEMENT_MINOR_REV;
+job_error:
+ job->reply->result = rc;
+ if (rc == 0)
+ job->job_done(job);
+ return rc;
+}
+
+/**
+ * lpfc_bsg_wake_mbox_wait - lpfc_bsg_issue_mbox mbox completion handler
+ * @phba: Pointer to HBA context object.
+ * @pmboxq: Pointer to mailbox command.
+ *
+ * This is completion handler function for mailbox commands issued from
+ * lpfc_bsg_issue_mbox function. This function is called by the
+ * mailbox event handler function with no lock held. This function
+ * will wake up thread waiting on the wait queue pointed by context1
+ * of the mailbox.
+ **/
+void
+lpfc_bsg_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
+{
+ struct bsg_job_data *dd_data;
+ MAILBOX_t *pmb;
+ MAILBOX_t *mb;
+ struct fc_bsg_job *job;
+ uint32_t size;
+ unsigned long flags;
+
+ spin_lock_irqsave(&phba->ct_ev_lock, flags);
+ dd_data = pmboxq->context1;
+ if (!dd_data) {
+ spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
+ return;
+ }
+
+ pmb = &dd_data->context_un.mbox.pmboxq->u.mb;
+ mb = dd_data->context_un.mbox.mb;
+ job = dd_data->context_un.mbox.set_job;
+ memcpy(mb, pmb, sizeof(*pmb));
+ size = job->request_payload.payload_len;
+ job->reply->reply_payload_rcv_len =
+ sg_copy_from_buffer(job->reply_payload.sg_list,
+ job->reply_payload.sg_cnt,
+ mb, size);
+ job->reply->result = 0;
+ dd_data->context_un.mbox.set_job = NULL;
+ job->dd_data = NULL;
+ job->job_done(job);
+ spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
+ mempool_free(dd_data->context_un.mbox.pmboxq, phba->mbox_mem_pool);
+ kfree(mb);
+ kfree(dd_data);
+ return;
+}
+
+/**
+ * lpfc_bsg_check_cmd_access - test for a supported mailbox command
+ * @phba: Pointer to HBA context object.
+ * @mb: Pointer to a mailbox object.
+ * @vport: Pointer to a vport object.
+ *
+ * Some commands require the port to be offline, some may not be called from
+ * the application.
+ **/
+static int lpfc_bsg_check_cmd_access(struct lpfc_hba *phba,
+ MAILBOX_t *mb, struct lpfc_vport *vport)
+{
+ /* return negative error values for bsg job */
+ switch (mb->mbxCommand) {
+ /* Offline only */
+ case MBX_INIT_LINK:
+ case MBX_DOWN_LINK:
+ case MBX_CONFIG_LINK:
+ case MBX_CONFIG_RING:
+ case MBX_RESET_RING:
+ case MBX_UNREG_LOGIN:
+ case MBX_CLEAR_LA:
+ case MBX_DUMP_CONTEXT:
+ case MBX_RUN_DIAGS:
+ case MBX_RESTART:
+ case MBX_SET_MASK:
+ if (!(vport->fc_flag & FC_OFFLINE_MODE)) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
+ "2743 Command 0x%x is illegal in on-line "
+ "state\n",
+ mb->mbxCommand);
+ return -EPERM;
+ }
+ case MBX_WRITE_NV:
+ case MBX_WRITE_VPARMS:
+ case MBX_LOAD_SM:
+ case MBX_READ_NV:
+ case MBX_READ_CONFIG:
+ case MBX_READ_RCONFIG:
+ case MBX_READ_STATUS:
+ case MBX_READ_XRI:
+ case MBX_READ_REV:
+ case MBX_READ_LNK_STAT:
+ case MBX_DUMP_MEMORY:
+ case MBX_DOWN_LOAD:
+ case MBX_UPDATE_CFG:
+ case MBX_KILL_BOARD:
+ case MBX_LOAD_AREA:
+ case MBX_LOAD_EXP_ROM:
+ case MBX_BEACON:
+ case MBX_DEL_LD_ENTRY:
+ case MBX_SET_DEBUG:
+ case MBX_WRITE_WWN:
+ case MBX_SLI4_CONFIG:
+ case MBX_READ_EVENT_LOG_STATUS:
+ case MBX_WRITE_EVENT_LOG:
+ case MBX_PORT_CAPABILITIES:
+ case MBX_PORT_IOV_CONTROL:
+ break;
+ case MBX_SET_VARIABLE:
+ case MBX_RUN_BIU_DIAG64:
+ case MBX_READ_EVENT_LOG:
+ case MBX_READ_SPARM64:
+ case MBX_READ_LA:
+ case MBX_READ_LA64:
+ case MBX_REG_LOGIN:
+ case MBX_REG_LOGIN64:
+ case MBX_CONFIG_PORT:
+ case MBX_RUN_BIU_DIAG:
+ default:
+ lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
+ "2742 Unknown Command 0x%x\n",
+ mb->mbxCommand);
+ return -EPERM;
+ }
+
+ return 0; /* ok */
+}
+
+/**
+ * lpfc_bsg_issue_mbox - issues a mailbox command on behalf of an app
+ * @phba: Pointer to HBA context object.
+ * @mb: Pointer to a mailbox object.
+ * @vport: Pointer to a vport object.
+ *
+ * Allocate a tracking object, mailbox command memory, get a mailbox
+ * from the mailbox pool, copy the caller mailbox command.
+ *
+ * If offline and the sli is active we need to poll for the command (port is
+ * being reset) and com-plete the job, otherwise issue the mailbox command and
+ * let our completion handler finish the command.
+ **/
+static uint32_t
+lpfc_bsg_issue_mbox(struct lpfc_hba *phba, struct fc_bsg_job *job,
+ struct lpfc_vport *vport)
+{
+ LPFC_MBOXQ_t *pmboxq;
+ MAILBOX_t *pmb;
+ MAILBOX_t *mb;
+ struct bsg_job_data *dd_data;
+ uint32_t size;
+ int rc = 0;
+
+ /* allocate our bsg tracking structure */
+ dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
+ if (!dd_data) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
+ "2727 Failed allocation of dd_data\n");
+ return -ENOMEM;
+ }
+
+ mb = kzalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!mb) {
+ kfree(dd_data);
+ return -ENOMEM;
+ }
+
+ pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!pmboxq) {
+ kfree(dd_data);
+ kfree(mb);
+ return -ENOMEM;
+ }
+
+ size = job->request_payload.payload_len;
+ job->reply->reply_payload_rcv_len =
+ sg_copy_to_buffer(job->request_payload.sg_list,
+ job->request_payload.sg_cnt,
+ mb, size);
+
+ rc = lpfc_bsg_check_cmd_access(phba, mb, vport);
+ if (rc != 0) {
+ kfree(dd_data);
+ kfree(mb);
+ mempool_free(pmboxq, phba->mbox_mem_pool);
+ return rc; /* must be negative */
+ }
+
+ memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
+ pmb = &pmboxq->u.mb;
+ memcpy(pmb, mb, sizeof(*pmb));
+ pmb->mbxOwner = OWN_HOST;
+ pmboxq->context1 = NULL;
+ pmboxq->vport = vport;
+
+ if ((vport->fc_flag & FC_OFFLINE_MODE) ||
+ (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) {
+ rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
+ if (rc != MBX_SUCCESS) {
+ if (rc != MBX_TIMEOUT) {
+ kfree(dd_data);
+ kfree(mb);
+ mempool_free(pmboxq, phba->mbox_mem_pool);
+ }
+ return (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
+ }
+
+ memcpy(mb, pmb, sizeof(*pmb));
+ job->reply->reply_payload_rcv_len =
+ sg_copy_from_buffer(job->reply_payload.sg_list,
+ job->reply_payload.sg_cnt,
+ mb, size);
+ kfree(dd_data);
+ kfree(mb);
+ mempool_free(pmboxq, phba->mbox_mem_pool);
+ /* not waiting mbox already done */
+ return 0;
+ }
+
+ /* setup wake call as IOCB callback */
+ pmboxq->mbox_cmpl = lpfc_bsg_wake_mbox_wait;
+ /* setup context field to pass wait_queue pointer to wake function */
+ pmboxq->context1 = dd_data;
+ dd_data->type = TYPE_MBOX;
+ dd_data->context_un.mbox.pmboxq = pmboxq;
+ dd_data->context_un.mbox.mb = mb;
+ dd_data->context_un.mbox.set_job = job;
+ job->dd_data = dd_data;
+ rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
+ if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
+ kfree(dd_data);
+ kfree(mb);
+ mempool_free(pmboxq, phba->mbox_mem_pool);
+ return -EIO;
+ }
+
+ return 1;
+}
+
+/**
+ * lpfc_bsg_mbox_cmd - process an fc bsg LPFC_BSG_VENDOR_MBOX command
+ * @job: MBOX fc_bsg_job for LPFC_BSG_VENDOR_MBOX.
+ **/
+static int
+lpfc_bsg_mbox_cmd(struct fc_bsg_job *job)
+{
+ struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
+ struct lpfc_hba *phba = vport->phba;
+ int rc = 0;
+
+ /* in case no data is transferred */
+ job->reply->reply_payload_rcv_len = 0;
+ if (job->request_len <
+ sizeof(struct fc_bsg_request) + sizeof(struct dfc_mbox_req)) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
+ "2737 Received MBOX_REQ request below "
+ "minimum size\n");
+ rc = -EINVAL;
+ goto job_error;
+ }
+
+ if (job->request_payload.payload_len != PAGE_SIZE) {
+ rc = -EINVAL;
+ goto job_error;
+ }
+
+ if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
+ rc = -EAGAIN;
+ goto job_error;
+ }
+
+ rc = lpfc_bsg_issue_mbox(phba, job, vport);
+
+job_error:
+ if (rc == 0) {
+ /* job done */
+ job->reply->result = 0;
+ job->dd_data = NULL;
+ job->job_done(job);
+ } else if (rc == 1)
+ /* job submitted, will complete later*/
+ rc = 0; /* return zero, no error */
+ else {
+ /* some error occurred */
+ job->reply->result = rc;
+ job->dd_data = NULL;
+ }
+
+ return rc;
+}
+
+/**
+ * lpfc_bsg_hst_vendor - process a vendor-specific fc_bsg_job
+ * @job: fc_bsg_job to handle
+ **/
+static int
+lpfc_bsg_hst_vendor(struct fc_bsg_job *job)
+{
+ int command = job->request->rqst_data.h_vendor.vendor_cmd[0];
+ int rc;
+
+ switch (command) {
+ case LPFC_BSG_VENDOR_SET_CT_EVENT:
+ rc = lpfc_bsg_hba_set_event(job);
+ break;
+ case LPFC_BSG_VENDOR_GET_CT_EVENT:
+ rc = lpfc_bsg_hba_get_event(job);
+ break;
+ case LPFC_BSG_VENDOR_SEND_MGMT_RESP:
+ rc = lpfc_bsg_send_mgmt_rsp(job);
+ break;
+ case LPFC_BSG_VENDOR_DIAG_MODE:
+ rc = lpfc_bsg_diag_mode(job);
+ break;
+ case LPFC_BSG_VENDOR_DIAG_TEST:
+ rc = lpfc_bsg_diag_test(job);
+ break;
+ case LPFC_BSG_VENDOR_GET_MGMT_REV:
+ rc = lpfc_bsg_get_dfc_rev(job);
+ break;
+ case LPFC_BSG_VENDOR_MBOX:
+ rc = lpfc_bsg_mbox_cmd(job);
+ break;
+ default:
+ rc = -EINVAL;
+ job->reply->reply_payload_rcv_len = 0;
+ /* make error code available to userspace */
+ job->reply->result = rc;
+ break;
+ }
+
+ return rc;
+}
+
+/**
+ * lpfc_bsg_request - handle a bsg request from the FC transport
+ * @job: fc_bsg_job to handle
+ **/
+int
+lpfc_bsg_request(struct fc_bsg_job *job)
+{
+ uint32_t msgcode;
+ int rc;
+
+ msgcode = job->request->msgcode;
+ switch (msgcode) {
+ case FC_BSG_HST_VENDOR:
+ rc = lpfc_bsg_hst_vendor(job);
+ break;
+ case FC_BSG_RPT_ELS:
+ rc = lpfc_bsg_rport_els(job);
+ break;
+ case FC_BSG_RPT_CT:
+ rc = lpfc_bsg_send_mgmt_cmd(job);
+ break;
+ default:
+ rc = -EINVAL;
+ job->reply->reply_payload_rcv_len = 0;
+ /* make error code available to userspace */
+ job->reply->result = rc;
+ break;
+ }
+
+ return rc;
+}
+
+/**
+ * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport
+ * @job: fc_bsg_job that has timed out
+ *
+ * This function just aborts the job's IOCB. The aborted IOCB will return to
+ * the waiting function which will handle passing the error back to userspace
+ **/
+int
+lpfc_bsg_timeout(struct fc_bsg_job *job)
+{
+ struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *cmdiocb;
+ struct lpfc_bsg_event *evt;
+ struct lpfc_bsg_iocb *iocb;
+ struct lpfc_bsg_mbox *mbox;
+ struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
+ struct bsg_job_data *dd_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&phba->ct_ev_lock, flags);
+ dd_data = (struct bsg_job_data *)job->dd_data;
+ /* timeout and completion crossed paths if no dd_data */
+ if (!dd_data) {
+ spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
+ return 0;
}
switch (dd_data->type) {
spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
job->job_done(job);
break;
+ case TYPE_MBOX:
+ mbox = &dd_data->context_un.mbox;
+ /* this mbox has no job anymore */
+ mbox->set_job = NULL;
+ job->dd_data = NULL;
+ job->reply->reply_payload_rcv_len = 0;
+ job->reply->result = -EAGAIN;
+ spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
+ job->job_done(job);
+ break;
default:
spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
break;
projects / platform / kernel / linux-starfive.git / commitdiff