cxgb3 - parity initialization for T3C adapters.

Add parity initialization for T3C adapters.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 82 insertions, 0 deletions

diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c
index 944423c497d2..d1aa7779796e 100644
--- a/drivers/net/cxgb3/cxgb3_main.c
+++ b/drivers/net/cxgb3/cxgb3_main.c
@@ -306,6 +306,77 @@ static int request_msix_data_irqs(struct adapter *adap)
 	return 0;
 }
 
+static int await_mgmt_replies(struct adapter *adap, unsigned long init_cnt,
+			      unsigned long n)
+{
+	int attempts = 5;
+
+	while (adap->sge.qs[0].rspq.offload_pkts < init_cnt + n) {
+		if (!--attempts)
+			return -ETIMEDOUT;
+		msleep(10);
+	}
+	return 0;
+}
+
+static int init_tp_parity(struct adapter *adap)
+{
+	int i;
+	struct sk_buff *skb;
+	struct cpl_set_tcb_field *greq;
+	unsigned long cnt = adap->sge.qs[0].rspq.offload_pkts;
+
+	t3_tp_set_offload_mode(adap, 1);
+
+	for (i = 0; i < 16; i++) {
+		struct cpl_smt_write_req *req;
+
+		skb = alloc_skb(sizeof(*req), GFP_KERNEL | __GFP_NOFAIL);
+		req = (struct cpl_smt_write_req *)__skb_put(skb, sizeof(*req));
+		memset(req, 0, sizeof(*req));
+		req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
+		OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SMT_WRITE_REQ, i));
+		req->iff = i;
+		t3_mgmt_tx(adap, skb);
+	}
+
+	for (i = 0; i < 2048; i++) {
+		struct cpl_l2t_write_req *req;
+
+		skb = alloc_skb(sizeof(*req), GFP_KERNEL | __GFP_NOFAIL);
+		req = (struct cpl_l2t_write_req *)__skb_put(skb, sizeof(*req));
+		memset(req, 0, sizeof(*req));
+		req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
+		OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_L2T_WRITE_REQ, i));
+		req->params = htonl(V_L2T_W_IDX(i));
+		t3_mgmt_tx(adap, skb);
+	}
+
+	for (i = 0; i < 2048; i++) {
+		struct cpl_rte_write_req *req;
+
+		skb = alloc_skb(sizeof(*req), GFP_KERNEL | __GFP_NOFAIL);
+		req = (struct cpl_rte_write_req *)__skb_put(skb, sizeof(*req));
+		memset(req, 0, sizeof(*req));
+		req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
+		OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_RTE_WRITE_REQ, i));
+		req->l2t_idx = htonl(V_L2T_W_IDX(i));
+		t3_mgmt_tx(adap, skb);
+	}
+
+	skb = alloc_skb(sizeof(*greq), GFP_KERNEL | __GFP_NOFAIL);
+	greq = (struct cpl_set_tcb_field *)__skb_put(skb, sizeof(*greq));
+	memset(greq, 0, sizeof(*greq));
+	greq->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
+	OPCODE_TID(greq) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, 0));
+	greq->mask = cpu_to_be64(1);
+	t3_mgmt_tx(adap, skb);
+
+	i = await_mgmt_replies(adap, cnt, 16 + 2048 + 2048 + 1);
+	t3_tp_set_offload_mode(adap, 0);
+	return i;
+}
+
 /**
  *	setup_rss - configure RSS
  *	@adap: the adapter
@@ -817,6 +888,7 @@ static int cxgb_up(struct adapter *adap)
 		if (err)
 			goto out;
 
+		t3_set_reg_field(adap, A_TP_PARA_REG5, 0, F_RXDDPOFFINIT);
 		t3_write_reg(adap, A_ULPRX_TDDP_PSZ, V_HPZ0(PAGE_SHIFT - 12));
 
 		err = setup_sge_qsets(adap);
@@ -856,6 +928,16 @@ static int cxgb_up(struct adapter *adap)
 	t3_sge_start(adap);
 	t3_intr_enable(adap);
 
+	if (adap->params.rev >= T3_REV_C && !(adap->flags & TP_PARITY_INIT) &&
+	    is_offload(adap) && init_tp_parity(adap) == 0)
+		adap->flags |= TP_PARITY_INIT;
+
+	if (adap->flags & TP_PARITY_INIT) {
+		t3_write_reg(adap, A_TP_INT_CAUSE,
+			     F_CMCACHEPERR | F_ARPLUTPERR);
+		t3_write_reg(adap, A_TP_INT_ENABLE, 0x7fbfffff);
+	}
+
 	if ((adap->flags & (USING_MSIX | QUEUES_BOUND)) == USING_MSIX)
 		bind_qsets(adap);
 	adap->flags |= QUEUES_BOUND;