qed: Add iWARP enablement support

This patch is the last of the initial iWARP patch series. It
adds the possiblity to actually detect iWARP from the device and enable
it in the critical locations which basically make iWARP available.

It wasn't submitted until now as iWARP hadn't been accepted into
the rdma tree.

Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qed/qed_cxt.c

@@ -2069,6 +2069,12 @@ static void qed_rdma_set_pf_params(struct qed_hwfn *p_hwfn,
 
 	num_srqs = min_t(u32, 32 * 1024, p_params->num_srqs);
 
+	if (p_hwfn->mcp_info->func_info.protocol == QED_PCI_ETH_RDMA) {
+		DP_NOTICE(p_hwfn,
+			  "Current day drivers don't support RoCE & iWARP simultaneously on the same PF. Default to RoCE-only\n");
+		p_hwfn->hw_info.personality = QED_PCI_ETH_ROCE;
+	}
+
 	switch (p_hwfn->hw_info.personality) {
 	case QED_PCI_ETH_IWARP:
 		/* Each QP requires one connection */

drivers/net/ethernet/qlogic/qed/qed_mcp.c

@@ -1691,12 +1691,12 @@ qed_mcp_get_shmem_proto_mfw(struct qed_hwfn *p_hwfn,
 	case FW_MB_PARAM_GET_PF_RDMA_ROCE:
 		*p_proto = QED_PCI_ETH_ROCE;
 		break;
+	case FW_MB_PARAM_GET_PF_RDMA_IWARP:
+		*p_proto = QED_PCI_ETH_IWARP;
+		break;
 	case FW_MB_PARAM_GET_PF_RDMA_BOTH:
-		DP_NOTICE(p_hwfn,
-			  "Current day drivers don't support RoCE & iWARP. Default to RoCE-only\n");
-		*p_proto = QED_PCI_ETH_ROCE;
+		*p_proto = QED_PCI_ETH_RDMA;
 		break;
-	case FW_MB_PARAM_GET_PF_RDMA_IWARP:
 	default:
 		DP_NOTICE(p_hwfn,
 			  "MFW answers GET_PF_RDMA_PROTOCOL but param is %08x\n",

drivers/net/ethernet/qlogic/qed/qed_rdma.c

@@ -156,7 +156,10 @@ static int qed_rdma_alloc(struct qed_hwfn *p_hwfn,
 		return rc;
 
 	p_hwfn->p_rdma_info = p_rdma_info;
-	p_rdma_info->proto = PROTOCOLID_ROCE;
+	if (QED_IS_IWARP_PERSONALITY(p_hwfn))
+		p_rdma_info->proto = PROTOCOLID_IWARP;
+	else
+		p_rdma_info->proto = PROTOCOLID_ROCE;
 
 	num_cons = qed_cxt_get_proto_cid_count(p_hwfn, p_rdma_info->proto,
 					       NULL);

drivers/net/ethernet/qlogic/qed/qed_sp_commands.c

@@ -377,6 +377,7 @@ int qed_sp_pf_start(struct qed_hwfn *p_hwfn,
 		p_ramrod->personality = PERSONALITY_ISCSI;
 		break;
 	case QED_PCI_ETH_ROCE:
+	case QED_PCI_ETH_IWARP:
 		p_ramrod->personality = PERSONALITY_RDMA_AND_ETH;
 		break;
 	default: