Merge branch 'cxgb4'

Hariprasad Shenai says:

====================
cxgb4/cxgb4vf: Misc fixes and 40G support for cxgb4vf

This patch series adds 40G support for cxgb4vf driver. Update the LSO length for
cxgb4vf, fix macro. Wait for device to get ready before reading PL_WHOAMI
register.

The patches series is created against 'net-next' tree.
And includes patches on cxgb4 and cxgb4vf driver.

We have included all the maintainers of respective drivers. Kindly review the
change and let us know in case of any review comments.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

10 files changed, 48 insertions, 21 deletions

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
index 9b2c669..410ed58 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
@@ -968,7 +968,7 @@ void t4_intr_enable(struct adapter *adapter);
 void t4_intr_disable(struct adapter *adapter);
 int t4_slow_intr_handler(struct adapter *adapter);
 
-int t4_wait_dev_ready(struct adapter *adap);
+int t4_wait_dev_ready(void __iomem *regs);
 int t4_link_start(struct adapter *adap, unsigned int mbox, unsigned int port,
 		  struct link_config *lc);
 int t4_restart_aneg(struct adapter *adap, unsigned int mbox, unsigned int port);
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index 321f3d9..5b38e95 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -6137,7 +6137,7 @@ static pci_ers_result_t eeh_slot_reset(struct pci_dev *pdev)
 	pci_save_state(pdev);
 	pci_cleanup_aer_uncorrect_error_status(pdev);
 
-	if (t4_wait_dev_ready(adap) < 0)
+	if (t4_wait_dev_ready(adap->regs) < 0)
 		return PCI_ERS_RESULT_DISCONNECT;
 	if (t4_fw_hello(adap, adap->fn, adap->fn, MASTER_MUST, NULL) < 0)
 		return PCI_ERS_RESULT_DISCONNECT;
@@ -6530,6 +6530,10 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 		goto out_disable_device;
 	}
 
+	err = t4_wait_dev_ready(regs);
+	if (err < 0)
+		goto out_unmap_bar0;
+
 	/* We control everything through one PF */
 	func = SOURCEPF_GET(readl(regs + PL_WHOAMI));
 	if (func != ent->driver_data) {
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c
index fab4c84..5e1b314 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c
@@ -1123,7 +1123,10 @@ out_free:	dev_kfree_skb_any(skb);
 		lso->c.ipid_ofst = htons(0);
 		lso->c.mss = htons(ssi->gso_size);
 		lso->c.seqno_offset = htonl(0);
-		lso->c.len = htonl(skb->len);
+		if (is_t4(adap->params.chip))
+			lso->c.len = htonl(skb->len);
+		else
+			lso->c.len = htonl(LSO_T5_XFER_SIZE(skb->len));
 		cpl = (void *)(lso + 1);
 		cntrl = TXPKT_CSUM_TYPE(v6 ? TX_CSUM_TCPIP6 : TX_CSUM_TCPIP) |
 			TXPKT_IPHDR_LEN(l3hdr_len) |
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
index 22d7581..1fff149 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
@@ -3845,12 +3845,19 @@ static void init_link_config(struct link_config *lc, unsigned int caps)
 	}
 }
 
-int t4_wait_dev_ready(struct adapter *adap)
+#define CIM_PF_NOACCESS 0xeeeeeeee
+
+int t4_wait_dev_ready(void __iomem *regs)
 {
-	if (t4_read_reg(adap, PL_WHOAMI) != 0xffffffff)
+	u32 whoami;
+
+	whoami = readl(regs + PL_WHOAMI);
+	if (whoami != 0xffffffff && whoami != CIM_PF_NOACCESS)
 		return 0;
+
 	msleep(500);
-	return t4_read_reg(adap, PL_WHOAMI) != 0xffffffff ? 0 : -EIO;
+	whoami = readl(regs + PL_WHOAMI);
+	return (whoami != 0xffffffff && whoami != CIM_PF_NOACCESS ? 0 : -EIO);
 }
 
 struct flash_desc {
@@ -3919,10 +3926,6 @@ int t4_prep_adapter(struct adapter *adapter)
 	uint16_t device_id;
 	u32 pl_rev;
 
-	ret = t4_wait_dev_ready(adapter);
-	if (ret < 0)
-		return ret;
-
 	get_pci_mode(adapter, &adapter->params.pci);
 	pl_rev = G_REV(t4_read_reg(adapter, PL_REV));
 
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_msg.h b/drivers/net/ethernet/chelsio/cxgb4/t4_msg.h
index 52e0810..5f4db239 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_msg.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_msg.h
@@ -527,6 +527,7 @@ struct cpl_tx_pkt_lso_core {
 #define LSO_LAST_SLICE    (1 << 22)
 #define LSO_FIRST_SLICE   (1 << 23)
 #define LSO_OPCODE(x)     ((x) << 24)
+#define LSO_T5_XFER_SIZE(x) ((x) << 0)
 	__be16 ipid_ofst;
 	__be16 mss;
 	__be32 seqno_offset;
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
index eee2728..a1024db 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
@@ -72,9 +72,8 @@
 #define  PIDX_MASK   0x00003fffU
 #define  PIDX_SHIFT  0
 #define  PIDX(x)     ((x) << PIDX_SHIFT)
-#define  S_PIDX_T5   0
-#define  M_PIDX_T5   0x1fffU
-#define  PIDX_T5(x)  (((x) >> S_PIDX_T5) & M_PIDX_T5)
+#define  PIDX_SHIFT_T5   0
+#define  PIDX_T5(x)  ((x) << PIDX_SHIFT_T5)
 
 
 #define SGE_TIMERREGS	6
diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c b/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c
index 8498a64..bfa398d 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c
@@ -163,15 +163,19 @@ void t4vf_os_link_changed(struct adapter *adapter, int pidx, int link_ok)
 		netif_carrier_on(dev);
 
 		switch (pi->link_cfg.speed) {
-		case SPEED_10000:
+		case 40000:
+			s = "40Gbps";
+			break;
+
+		case 10000:
 			s = "10Gbps";
 			break;
 
-		case SPEED_1000:
+		case 1000:
 			s = "1000Mbps";
 			break;
 
-		case SPEED_100:
+		case 100:
 			s = "100Mbps";
 			break;
 
@@ -2351,7 +2355,7 @@ static void cfg_queues(struct adapter *adapter)
 		struct port_info *pi = adap2pinfo(adapter, pidx);
 
 		pi->first_qset = qidx;
-		pi->nqsets = is_10g_port(&pi->link_cfg) ? q10g : 1;
+		pi->nqsets = is_x_10g_port(&pi->link_cfg) ? q10g : 1;
 		qidx += pi->nqsets;
 	}
 	s->ethqsets = qidx;
diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
index a5fb949..85036e6 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
@@ -1208,7 +1208,10 @@ int t4vf_eth_xmit(struct sk_buff *skb, struct net_device *dev)
 		lso->ipid_ofst = cpu_to_be16(0);
 		lso->mss = cpu_to_be16(ssi->gso_size);
 		lso->seqno_offset = cpu_to_be32(0);
-		lso->len = cpu_to_be32(skb->len);
+		if (is_t4(adapter->params.chip))
+			lso->len = cpu_to_be32(skb->len);
+		else
+			lso->len = cpu_to_be32(LSO_T5_XFER_SIZE(skb->len));
 
 		/*
 		 * Set up TX Packet CPL pointer, control word and perform
diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h
index f412d0f..95df61d 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h
@@ -228,6 +228,12 @@ static inline bool is_10g_port(const struct link_config *lc)
 	return (lc->supported & SUPPORTED_10000baseT_Full) != 0;
 }
 
+static inline bool is_x_10g_port(const struct link_config *lc)
+{
+	return (lc->supported & FW_PORT_CAP_SPEED_10G) != 0 ||
+		(lc->supported & FW_PORT_CAP_SPEED_40G) != 0;
+}
+
 static inline unsigned int core_ticks_per_usec(const struct adapter *adapter)
 {
 	return adapter->params.vpd.cclk / 1000;
diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c
index 25dfeb8..e984fdc 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c
@@ -327,6 +327,8 @@ int t4vf_port_init(struct adapter *adapter, int pidx)
 		v |= SUPPORTED_1000baseT_Full;
 	if (word & FW_PORT_CAP_SPEED_10G)
 		v |= SUPPORTED_10000baseT_Full;
+	if (word & FW_PORT_CAP_SPEED_40G)
+		v |= SUPPORTED_40000baseSR4_Full;
 	if (word & FW_PORT_CAP_ANEG)
 		v |= SUPPORTED_Autoneg;
 	init_link_config(&pi->link_cfg, v);
@@ -1352,11 +1354,13 @@ int t4vf_handle_fw_rpl(struct adapter *adapter, const __be64 *rpl)
 		if (word & FW_PORT_CMD_TXPAUSE)
 			fc |= PAUSE_TX;
 		if (word & FW_PORT_CMD_LSPEED(FW_PORT_CAP_SPEED_100M))
-			speed = SPEED_100;
+			speed = 100;
 		else if (word & FW_PORT_CMD_LSPEED(FW_PORT_CAP_SPEED_1G))
-			speed = SPEED_1000;
+			speed = 1000;
 		else if (word & FW_PORT_CMD_LSPEED(FW_PORT_CAP_SPEED_10G))
-			speed = SPEED_10000;
+			speed = 10000;
+		else if (word & FW_PORT_CMD_LSPEED(FW_PORT_CAP_SPEED_40G))
+			speed = 40000;
 
 		/*
 		 * Scan all of our "ports" (Virtual Interfaces) looking for