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Commit ae9e28f3 authored by James Smart's avatar James Smart Committed by Martin K. Petersen
Browse files

scsi: lpfc: Add MDS Diagnostic support. 



Added code to support Cisco MDS loopback diagnostic. The diagnostics run
various loopbacks including one which loops-back frame through the
driver.

Signed-off-by: default avatarDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: default avatarJames Smart <james.smart@broadcom.com>
Reviewed-by: default avatarHannes Reinecke <hare@suse.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent dc53a618

drivers/scsi/lpfc/lpfc.h

+2 −0
Original line number Diff line number Diff line
@@ -675,6 +675,8 @@ struct lpfc_hba { 
					/* INIT_LINK mailbox command */

#define LS_NPIV_FAB_SUPPORTED 0x2	/* Fabric supports NPIV */

#define LS_IGNORE_ERATT       0x4	/* intr handler should ignore ERATT */

#define LS_MDS_LINK_DOWN      0x8	/* MDS Diagnostics Link Down */

#define LS_MDS_LOOPBACK      0x16	/* MDS Diagnostics Link Up (Loopback) */



	uint32_t hba_flag;	/* hba generic flags */

#define HBA_ERATT_HANDLED	0x1 /* This flag is set when eratt handled */

drivers/scsi/lpfc/lpfc_els.c

+7 −0
Original line number Diff line number Diff line
@@ -1047,6 +1047,13 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 
				 irsp->ulpStatus, irsp->un.ulpWord[4],

				 irsp->ulpTimeout);





		/* If this is not a loop open failure, bail out */

		if (!(irsp->ulpStatus == IOSTAT_LOCAL_REJECT &&

		      ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) ==

					IOERR_LOOP_OPEN_FAILURE)))

			goto flogifail;



		/* FLOGI failed, so there is no fabric */

		spin_lock_irq(shost->host_lock);

		vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);

drivers/scsi/lpfc/lpfc_hbadisc.c

+2 −1
Original line number Diff line number Diff line
@@ -701,7 +701,8 @@ lpfc_work_done(struct lpfc_hba *phba) 
			/* Set the lpfc data pending flag */

			set_bit(LPFC_DATA_READY, &phba->data_flags);

		} else {

			if (phba->link_state >= LPFC_LINK_UP) {

			if (phba->link_state >= LPFC_LINK_UP ||

			    phba->link_flag & LS_MDS_LOOPBACK) {

				pring->flag &= ~LPFC_DEFERRED_RING_EVENT;

				lpfc_sli_handle_slow_ring_event(phba, pring,

								(status &

drivers/scsi/lpfc/lpfc_hw4.h

+14 −1
Original line number Diff line number Diff line
@@ -4421,6 +4421,19 @@ struct fcp_treceive64_wqe { 
};

#define TXRDY_PAYLOAD_LEN      12



#define CMD_SEND_FRAME	0xE1



struct send_frame_wqe {

	struct ulp_bde64 bde;          /* words 0-2 */

	uint32_t frame_len;            /* word 3 */

	uint32_t fc_hdr_wd0;           /* word 4 */

	uint32_t fc_hdr_wd1;           /* word 5 */

	struct wqe_common wqe_com;     /* words 6-11 */

	uint32_t fc_hdr_wd2;           /* word 12 */

	uint32_t fc_hdr_wd3;           /* word 13 */

	uint32_t fc_hdr_wd4;           /* word 14 */

	uint32_t fc_hdr_wd5;           /* word 15 */

};



union lpfc_wqe {

	uint32_t words[16];
@@ -4439,7 +4452,7 @@ union lpfc_wqe { 
	struct fcp_trsp64_wqe fcp_trsp;

	struct fcp_tsend64_wqe fcp_tsend;

	struct fcp_treceive64_wqe fcp_treceive;



	struct send_frame_wqe send_frame;

};



union lpfc_wqe128 {

drivers/scsi/lpfc/lpfc_init.c

+13 −0
Original line number Diff line number Diff line
@@ -4540,6 +4540,19 @@ lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc) 
	pmb->vport = phba->pport;



	if (phba->sli4_hba.link_state.status != LPFC_FC_LA_TYPE_LINK_UP) {

		phba->link_flag &= ~(LS_MDS_LINK_DOWN | LS_MDS_LOOPBACK);



		switch (phba->sli4_hba.link_state.status) {

		case LPFC_FC_LA_TYPE_MDS_LINK_DOWN:

			phba->link_flag |= LS_MDS_LINK_DOWN;

			break;

		case LPFC_FC_LA_TYPE_MDS_LOOPBACK:

			phba->link_flag |= LS_MDS_LOOPBACK;

			break;

		default:

			break;

		}



		/* Parse and translate status field */

		mb = &pmb->u.mb;

		mb->mbxStatus = lpfc_sli4_parse_latt_fault(phba,