From: Mike Christie <mchristi@redhat.com>
Date: Fri, 13 Aug 2010 09:46:38 -0400
Subject: [scsi] bnx2i: add support for additional TMFs
Message-id: <1281692802-2810-11-git-send-email-mchristi@redhat.com>
Patchwork-id: 27548
O-Subject: [RHEL5.6 PATCH 10/14] BNX2I: Added support for other TMFs besides
	ABORT_TASK
Bugzilla: 568606

From: Eddie Wai <eddie.wai@broadcom.com>

For bz 568606.

Expanded the TMF request routine to support other TMFs such as LUN
RESET, etc.

Patch was sent here:
http://marc.info/?t=128165673000001&r=1&w=2
but the version of the patch below has some changes requested
upstream by me
http://marc.info/?l=linux-scsi&m=128166326607447&w=2

diff --git a/drivers/scsi/bnx2i/bnx2i_hwi.c b/drivers/scsi/bnx2i/bnx2i_hwi.c
index 23dea1f..f4ad1bd 100644
--- a/drivers/scsi/bnx2i/bnx2i_hwi.c
+++ b/drivers/scsi/bnx2i/bnx2i_hwi.c
@@ -384,7 +384,6 @@ int bnx2i_send_iscsi_tmf(struct bnx2i_conn *bnx2i_conn,
 	struct bnx2i_cmd *bnx2i_cmd;
 	struct bnx2i_tmf_request *tmfabort_wqe;
 	u32 dword;
-	u32 scsi_lun[2];
 
 	bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data;
 	tmfabort_hdr = (struct iscsi_tm *)mtask->hdr;
@@ -392,38 +391,41 @@ int bnx2i_send_iscsi_tmf(struct bnx2i_conn *bnx2i_conn,
 						bnx2i_conn->ep->qp.sq_prod_qe;
 
 	tmfabort_wqe->op_code = tmfabort_hdr->opcode;
-	tmfabort_wqe->op_attr = 0;
-	tmfabort_wqe->op_attr =
-		ISCSI_TMF_REQUEST_ALWAYS_ONE | ISCSI_TM_FUNC_ABORT_TASK;
+	tmfabort_wqe->op_attr = tmfabort_hdr->flags;
 
 	tmfabort_wqe->itt = (mtask->itt | (ISCSI_TASK_TYPE_MPATH << 14));
 	tmfabort_wqe->reserved2 = 0;
 	tmfabort_wqe->cmd_sn = be32_to_cpu(tmfabort_hdr->cmdsn);
 
-	ctask = iscsi_itt_to_task(conn, tmfabort_hdr->rtt);
-	if (!ctask || !ctask->sc)
-		/*
-		 * the iscsi layer must have completed the cmd while this
-		 * was starting up.
-		 *
-		 * Note: In the case of a SCSI cmd timeout, the task's sc
-		 *       is still active; hence ctask->sc != 0
-		 *       In this case, the task must be aborted
-		 */
-		return 0;
-
-	ref_sc = ctask->sc;
-
-	/* Retrieve LUN directly from the ref_sc */
-	int_to_scsilun(ref_sc->device->lun, (struct scsi_lun *) scsi_lun);
-	tmfabort_wqe->lun[0] = be32_to_cpu(scsi_lun[0]);
-	tmfabort_wqe->lun[1] = be32_to_cpu(scsi_lun[1]);
-
-	if (ref_sc->sc_data_direction == DMA_TO_DEVICE)
-		dword = (ISCSI_TASK_TYPE_WRITE << ISCSI_CMD_REQUEST_TYPE_SHIFT);
-	else
-		dword = (ISCSI_TASK_TYPE_READ << ISCSI_CMD_REQUEST_TYPE_SHIFT);
-	tmfabort_wqe->ref_itt = (dword | (tmfabort_hdr->rtt & ISCSI_ITT_MASK));
+	switch (tmfabort_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) {
+	case ISCSI_TM_FUNC_ABORT_TASK:
+	case ISCSI_TM_FUNC_TASK_REASSIGN:
+		ctask = iscsi_itt_to_task(conn, tmfabort_hdr->rtt);
+		if (!ctask || !ctask->sc)
+			/*
+			 * the iscsi layer must have completed the cmd while
+			 * was starting up.
+			 *
+			 * Note: In the case of a SCSI cmd timeout, the task's
+			 *       sc is still active; hence ctask->sc != 0
+			 *       In this case, the task must be aborted
+			 */
+			return 0;
+
+		ref_sc = ctask->sc;
+		if (ref_sc->sc_data_direction == DMA_TO_DEVICE)
+			dword = (ISCSI_TASK_TYPE_WRITE <<
+				 ISCSI_CMD_REQUEST_TYPE_SHIFT);
+		else
+			dword = (ISCSI_TASK_TYPE_READ <<
+				 ISCSI_CMD_REQUEST_TYPE_SHIFT);
+		tmfabort_wqe->ref_itt = (dword |
+					(tmfabort_hdr->rtt & ISCSI_ITT_MASK));
+		break;
+	default:
+		tmfabort_wqe->ref_itt = RESERVED_ITT;
+	}
+	memcpy(tmfabort_wqe->lun, tmfabort_hdr->lun, sizeof(struct scsi_lun));
 	tmfabort_wqe->ref_cmd_sn = be32_to_cpu(tmfabort_hdr->refcmdsn);
 
 	tmfabort_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma;