NetXen: Use multiple PCI functions

NetXen: Make driver use multiple PCI functions.
This patch will make NetXen driver work with multiple PCI functions. This will
make the usage of memory resources as well as interrupts more independent
among different functions which results in better throughput. This change has
been done after the multiport support is added in firmware.

Signed-off by: Mithlesh Thukral <mithlesh@netxen.com>

Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 168 insertions, 53 deletions

diff --git a/drivers/net/netxen/netxen_nic_hw.c b/drivers/net/netxen/netxen_nic_hw.c
index 0fba8f1..5043091 100644
--- a/drivers/net/netxen/netxen_nic_hw.c
+++ b/drivers/net/netxen/netxen_nic_hw.c
@@ -33,10 +33,128 @@
 
 #include "netxen_nic.h"
 #include "netxen_nic_hw.h"
+#define DEFINE_GLOBAL_RECV_CRB
 #include "netxen_nic_phan_reg.h"
 
+
 #include <net/ip.h>
 
+struct netxen_recv_crb recv_crb_registers[] = {
+	/*
+	 * Instance 0.
+	 */
+	{
+	 /* rcv_desc_crb: */
+	 {
+	  {
+	   /* crb_rcv_producer_offset: */
+	   NETXEN_NIC_REG(0x100),
+	   /* crb_rcv_consumer_offset: */
+	   NETXEN_NIC_REG(0x104),
+	   /* crb_gloablrcv_ring: */
+	   NETXEN_NIC_REG(0x108),
+	   /* crb_rcv_ring_size */
+	   NETXEN_NIC_REG(0x10c),
+
+	   },
+	  /* Jumbo frames */
+	  {
+	   /* crb_rcv_producer_offset: */
+	   NETXEN_NIC_REG(0x110),
+	   /* crb_rcv_consumer_offset: */
+	   NETXEN_NIC_REG(0x114),
+	   /* crb_gloablrcv_ring: */
+	   NETXEN_NIC_REG(0x118),
+	   /* crb_rcv_ring_size */
+	   NETXEN_NIC_REG(0x11c),
+	   },
+	  /* LRO */
+	  {
+	   /* crb_rcv_producer_offset: */
+	   NETXEN_NIC_REG(0x120),
+	   /* crb_rcv_consumer_offset: */
+	   NETXEN_NIC_REG(0x124),
+	   /* crb_gloablrcv_ring: */
+	   NETXEN_NIC_REG(0x128),
+	   /* crb_rcv_ring_size */
+	   NETXEN_NIC_REG(0x12c),
+	   }
+	  },
+	 /* crb_rcvstatus_ring: */
+	 NETXEN_NIC_REG(0x130),
+	 /* crb_rcv_status_producer: */
+	 NETXEN_NIC_REG(0x134),
+	 /* crb_rcv_status_consumer: */
+	 NETXEN_NIC_REG(0x138),
+	 /* crb_rcvpeg_state: */
+	 NETXEN_NIC_REG(0x13c),
+	 /* crb_status_ring_size */
+	 NETXEN_NIC_REG(0x140),
+
+	 },
+	/*
+	 * Instance 1,
+	 */
+	{
+	 /* rcv_desc_crb: */
+	 {
+	  {
+	   /* crb_rcv_producer_offset: */
+	   NETXEN_NIC_REG(0x144),
+	   /* crb_rcv_consumer_offset: */
+	   NETXEN_NIC_REG(0x148),
+	   /* crb_globalrcv_ring: */
+	   NETXEN_NIC_REG(0x14c),
+	   /* crb_rcv_ring_size */
+	   NETXEN_NIC_REG(0x150),
+
+	   },
+	  /* Jumbo frames */
+	  {
+	   /* crb_rcv_producer_offset: */
+	   NETXEN_NIC_REG(0x154),
+	   /* crb_rcv_consumer_offset: */
+	   NETXEN_NIC_REG(0x158),
+	   /* crb_globalrcv_ring: */
+	   NETXEN_NIC_REG(0x15c),
+	   /* crb_rcv_ring_size */
+	   NETXEN_NIC_REG(0x160),
+	   },
+	  /* LRO */
+	  {
+	   /* crb_rcv_producer_offset: */
+	   NETXEN_NIC_REG(0x164),
+	   /* crb_rcv_consumer_offset: */
+	   NETXEN_NIC_REG(0x168),
+	   /* crb_globalrcv_ring: */
+	   NETXEN_NIC_REG(0x16c),
+	   /* crb_rcv_ring_size */
+	   NETXEN_NIC_REG(0x170),
+	   }
+
+	  },
+	 /* crb_rcvstatus_ring: */
+	 NETXEN_NIC_REG(0x174),
+	 /* crb_rcv_status_producer: */
+	 NETXEN_NIC_REG(0x178),
+	 /* crb_rcv_status_consumer: */
+	 NETXEN_NIC_REG(0x17c),
+	 /* crb_rcvpeg_state: */
+	 NETXEN_NIC_REG(0x180),
+	 /* crb_status_ring_size */
+	 NETXEN_NIC_REG(0x184),
+
+	 },
+};
+
+u64 ctx_addr_sig_regs[][3] = {
+	{NETXEN_NIC_REG(0x188), NETXEN_NIC_REG(0x18c), NETXEN_NIC_REG(0x1c0)},
+	{NETXEN_NIC_REG(0x190), NETXEN_NIC_REG(0x194), NETXEN_NIC_REG(0x1c4)},
+	{NETXEN_NIC_REG(0x198), NETXEN_NIC_REG(0x19c), NETXEN_NIC_REG(0x1c8)},
+	{NETXEN_NIC_REG(0x1a0), NETXEN_NIC_REG(0x1a4), NETXEN_NIC_REG(0x1cc)}
+};
+
+
 /*  PCI Windowing for DDR regions.  */
 
 #define ADDR_IN_RANGE(addr, low, high)	\
@@ -70,8 +188,7 @@ void netxen_free_hw_resources(struct netxen_adapter *adapter);
 
 int netxen_nic_set_mac(struct net_device *netdev, void *p)
 {
-	struct netxen_port *port = netdev_priv(netdev);
-	struct netxen_adapter *adapter = port->adapter;
+	struct netxen_adapter *adapter = netdev_priv(netdev);
 	struct sockaddr *addr = p;
 
 	if (netif_running(netdev))
@@ -84,7 +201,7 @@ int netxen_nic_set_mac(struct net_device *netdev, void *p)
 	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 
 	if (adapter->macaddr_set)
-		adapter->macaddr_set(port, addr->sa_data);
+		adapter->macaddr_set(adapter, addr->sa_data);
 
 	return 0;
 }
@@ -94,8 +211,7 @@ int netxen_nic_set_mac(struct net_device *netdev, void *p)
  */
 void netxen_nic_set_multi(struct net_device *netdev)
 {
-	struct netxen_port *port = netdev_priv(netdev);
-	struct netxen_adapter *adapter = port->adapter;
+	struct netxen_adapter *adapter = netdev_priv(netdev);
 	struct dev_mc_list *mc_ptr;
 	__u32 netxen_mac_addr_cntl_data = 0;
 
@@ -103,14 +219,12 @@ void netxen_nic_set_multi(struct net_device *netdev)
 	if (netdev->flags & IFF_PROMISC) {
 		if (adapter->set_promisc)
 			adapter->set_promisc(adapter,
-					     port->portnum,
 					     NETXEN_NIU_PROMISC_MODE);
 	} else {
 		if (adapter->unset_promisc &&
 		    adapter->ahw.boardcfg.board_type
 		    != NETXEN_BRDTYPE_P2_SB31_10G_IMEZ)
 			adapter->unset_promisc(adapter,
-					       port->portnum,
 					       NETXEN_NIU_NON_PROMISC_MODE);
 	}
 	if (adapter->ahw.board_type == NETXEN_NIC_XGBE) {
@@ -152,8 +266,7 @@ void netxen_nic_set_multi(struct net_device *netdev)
  */
 int netxen_nic_change_mtu(struct net_device *netdev, int mtu)
 {
-	struct netxen_port *port = netdev_priv(netdev);
-	struct netxen_adapter *adapter = port->adapter;
+	struct netxen_adapter *adapter = netdev_priv(netdev);
 	int eff_mtu = mtu + NETXEN_ENET_HEADER_SIZE + NETXEN_ETH_FCS_SIZE;
 
 	if ((eff_mtu > NETXEN_MAX_MTU) || (eff_mtu < NETXEN_MIN_MTU)) {
@@ -163,7 +276,7 @@ int netxen_nic_change_mtu(struct net_device *netdev, int mtu)
 	}
 
 	if (adapter->set_mtu)
-		adapter->set_mtu(port, mtu);
+		adapter->set_mtu(adapter, mtu);
 	netdev->mtu = mtu;
 
 	return 0;
@@ -229,7 +342,7 @@ int netxen_nic_hw_resources(struct netxen_adapter *adapter)
 			    (dma_addr_t *) & adapter->ctx_desc_phys_addr,
 			    &adapter->ctx_desc_pdev);
 
-	printk("ctx_desc_phys_addr: 0x%llx\n",
+	printk(KERN_INFO "ctx_desc_phys_addr: 0x%llx\n",
 	       (unsigned long long) adapter->ctx_desc_phys_addr);
 	if (addr == NULL) {
 		DPRINTK(ERR, "bad return from pci_alloc_consistent\n");
@@ -249,7 +362,7 @@ int netxen_nic_hw_resources(struct netxen_adapter *adapter)
 			    adapter->max_tx_desc_count,
 			    (dma_addr_t *) & hw->cmd_desc_phys_addr,
 			    &adapter->ahw.cmd_desc_pdev);
-	printk("cmd_desc_phys_addr: 0x%llx\n",
+	printk(KERN_INFO "cmd_desc_phys_addr: 0x%llx\n",
 	       (unsigned long long) hw->cmd_desc_phys_addr);
 
 	if (addr == NULL) {
@@ -385,7 +498,6 @@ void netxen_tso_check(struct netxen_adapter *adapter,
 			return;
 		}
 	}
-	adapter->stats.xmitcsummed++;
 	desc->tcp_hdr_offset = skb_transport_offset(skb);
 	desc->ip_hdr_offset = skb_network_offset(skb);
 }
@@ -475,7 +587,30 @@ void netxen_nic_pci_change_crbwindow(struct netxen_adapter *adapter, u32 wndw)
 
 	if (adapter->curr_window == wndw)
 		return;
-
+	switch(adapter->portnum) {
+		case 0:
+			offset = PCI_OFFSET_SECOND_RANGE(adapter,
+					NETXEN_PCIX_PH_REG(PCIX_CRB_WINDOW));
+			break;
+		case 1:
+			offset = PCI_OFFSET_SECOND_RANGE(adapter,
+					NETXEN_PCIX_PH_REG(PCIX_CRB_WINDOW_F1));
+			break;
+		case 2:
+			offset = PCI_OFFSET_SECOND_RANGE(adapter,
+					NETXEN_PCIX_PH_REG(PCIX_CRB_WINDOW_F2));
+			break;
+		case 3:
+			offset = PCI_OFFSET_SECOND_RANGE(adapter,
+					NETXEN_PCIX_PH_REG(PCIX_CRB_WINDOW_F3));
+			break;
+		default:
+			printk(KERN_INFO "Changing the window for PCI function"
+					"%d\n",	adapter->portnum);
+			offset = PCI_OFFSET_SECOND_RANGE(adapter,
+					NETXEN_PCIX_PH_REG(PCIX_CRB_WINDOW));
+			break;
+	}
 	/*
 	 * Move the CRB window.
 	 * We need to write to the "direct access" region of PCI
@@ -484,9 +619,6 @@ void netxen_nic_pci_change_crbwindow(struct netxen_adapter *adapter, u32 wndw)
 	 * register address is received by PCI. The direct region bypasses
 	 * the CRB bus.
 	 */
-	offset =
-	    PCI_OFFSET_SECOND_RANGE(adapter,
-				    NETXEN_PCIX_PH_REG(PCIX_CRB_WINDOW));
 
 	if (wndw & 0x1)
 		wndw = NETXEN_WINDOW_ONE;
@@ -810,43 +942,27 @@ int netxen_nic_get_board_info(struct netxen_adapter *adapter)
 
 /* NIU access sections */
 
-int netxen_nic_set_mtu_gb(struct netxen_port *port, int new_mtu)
+int netxen_nic_set_mtu_gb(struct netxen_adapter *adapter, int new_mtu)
 {
-	struct netxen_adapter *adapter = port->adapter;
 	netxen_nic_write_w0(adapter,
-			    NETXEN_NIU_GB_MAX_FRAME_SIZE(port->portnum),
+			    NETXEN_NIU_GB_MAX_FRAME_SIZE(adapter->portnum),
 			    new_mtu);
 	return 0;
 }
 
-int netxen_nic_set_mtu_xgb(struct netxen_port *port, int new_mtu)
+int netxen_nic_set_mtu_xgb(struct netxen_adapter *adapter, int new_mtu)
 {
-	struct netxen_adapter *adapter = port->adapter;
 	new_mtu += NETXEN_NIU_HDRSIZE + NETXEN_NIU_TLRSIZE;
-	if (port->portnum == 0)
+	if (adapter->portnum == 0)
 	    netxen_nic_write_w0(adapter, NETXEN_NIU_XGE_MAX_FRAME_SIZE, new_mtu);
-	else if (port->portnum == 1)
+	else if (adapter->portnum == 1)
 	    netxen_nic_write_w0(adapter, NETXEN_NIU_XG1_MAX_FRAME_SIZE, new_mtu);
 	return 0;
 }
 
 void netxen_nic_init_niu_gb(struct netxen_adapter *adapter)
 {
-	int portno;
-	for (portno = 0; portno < NETXEN_NIU_MAX_GBE_PORTS; portno++)
-		netxen_niu_gbe_init_port(adapter, portno);
-}
-
-void netxen_nic_stop_all_ports(struct netxen_adapter *adapter)
-{
-	int port_nr;
-	struct netxen_port *port;
-
-	for (port_nr = 0; port_nr < adapter->ahw.max_ports; port_nr++) {
-		port = adapter->port[port_nr];
-		if (adapter->stop_port)
-			adapter->stop_port(adapter, port->portnum);
-	}
+	netxen_niu_gbe_init_port(adapter, adapter->portnum);
 }
 
 void
@@ -865,9 +981,8 @@ netxen_crb_writelit_adapter(struct netxen_adapter *adapter, unsigned long off,
 	}
 }
 
-void netxen_nic_set_link_parameters(struct netxen_port *port)
+void netxen_nic_set_link_parameters(struct netxen_adapter *adapter)
 {
-	struct netxen_adapter *adapter = port->adapter;
 	__u32 status;
 	__u32 autoneg;
 	__u32 mode;
@@ -876,47 +991,47 @@ void netxen_nic_set_link_parameters(struct netxen_port *port)
 	if (netxen_get_niu_enable_ge(mode)) {	/* Gb 10/100/1000 Mbps mode */
 		if (adapter->phy_read
 		    && adapter->
-		    phy_read(adapter, port->portnum,
+		    phy_read(adapter, adapter->portnum,
 			     NETXEN_NIU_GB_MII_MGMT_ADDR_PHY_STATUS,
 			     &status) == 0) {
 			if (netxen_get_phy_link(status)) {
 				switch (netxen_get_phy_speed(status)) {
 				case 0:
-					port->link_speed = SPEED_10;
+					adapter->link_speed = SPEED_10;
 					break;
 				case 1:
-					port->link_speed = SPEED_100;
+					adapter->link_speed = SPEED_100;
 					break;
 				case 2:
-					port->link_speed = SPEED_1000;
+					adapter->link_speed = SPEED_1000;
 					break;
 				default:
-					port->link_speed = -1;
+					adapter->link_speed = -1;
 					break;
 				}
 				switch (netxen_get_phy_duplex(status)) {
 				case 0:
-					port->link_duplex = DUPLEX_HALF;
+					adapter->link_duplex = DUPLEX_HALF;
 					break;
 				case 1:
-					port->link_duplex = DUPLEX_FULL;
+					adapter->link_duplex = DUPLEX_FULL;
 					break;
 				default:
-					port->link_duplex = -1;
+					adapter->link_duplex = -1;
 					break;
 				}
 				if (adapter->phy_read
 				    && adapter->
-				    phy_read(adapter, port->portnum,
+				    phy_read(adapter, adapter->portnum,
 					     NETXEN_NIU_GB_MII_MGMT_ADDR_AUTONEG,
 					     &autoneg) != 0)
-					port->link_autoneg = autoneg;
+					adapter->link_autoneg = autoneg;
 			} else
 				goto link_down;
 		} else {
 		      link_down:
-			port->link_speed = -1;
-			port->link_duplex = -1;
+			adapter->link_speed = -1;
+			adapter->link_duplex = -1;
 		}
 	}
 }