[PATCH 2.6.17 2/9] NetXen: Hardware access routines

["Amit S. Kale" <amitkale@netxen.com>]

diff -Narup -X linux-2.6.17.orig/Documentation/dontdiff linux-2.6.17.orig/drivers/net/netxen/netxen_nic_hw.c linux-2.6.17/drivers/net/netxen/netxen_nic_hw.c
--- linux-2.6.17.orig/drivers/net/netxen/netxen_nic_hw.c	1969-12-31 16:00:00.000000000 -0800
+++ linux-2.6.17/drivers/net/netxen/netxen_nic_hw.c	2006-08-31 06:17:22.000000000 -0700
@@ -0,0 +1,1102 @@
+/*
+ * Copyright (C) 2003 - 2006 NetXen, Inc.
+ * All rights reserved.
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA  02111-1307, USA.
+ * 
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.
+ * 
+ * Contact Information:
+ *    info@netxen.com
+ * NetXen,
+ * 3965 Freedom Circle, Fourth floor,
+ * Santa Clara, CA 95054
+ *
+ *
+ * Source file for NIC routines to access the Phantom hardware
+ *
+ */
+
+#include "netxen_nic.h"
+#include "netxen_nic_hw.h"
+#include "netxen_nic_phan_reg.h"
+
+/*  PCI Windowing for DDR regions.  */
+
+#define ADDR_IN_RANGE(addr, low, high)	\
+	(((addr) <= (high)) && ((addr) >= (low)))
+
+#define NETXEN_FLASH_BASE	(BOOTLD_START)
+#define NETXEN_PHANTOM_MEM_BASE	(NETXEN_FLASH_BASE)
+#define NETXEN_MAX_MTU		8000
+#define NETXEN_MTU_MASK		0xFFFF0000
+#define NETXEN_WINDOW_ONE 0x2000000	/* CRB Window: bit 25 of CRB address */
+
+unsigned long netxen_nic_pci_set_window(void __iomem * pci_base,
+					unsigned long long addr);
+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 sockaddr *addr = p;
+
+	if (netif_running(netdev))
+		return -EBUSY;
+
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EADDRNOTAVAIL;
+
+	DPRINTK(INFO, "valid ether addr\n");
+	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+
+	netxen_nic_macaddr_set(port, addr->sa_data);
+
+	return 0;
+}
+
+/**
+ * netxen_nic_set_multi - Multicast
+ **/
+void netxen_nic_set_multi(struct net_device *netdev)
+{
+	struct netxen_port *port = netdev_priv(netdev);
+	struct dev_mc_list *mc_ptr;
+
+	mc_ptr = netdev->mc_list;
+	if (netdev->flags & IFF_PROMISC)
+		netxen_nic_set_promisc_mode(port);
+	else
+		netxen_nic_unset_promisc_mode(port);
+}
+
+/*
+ * netxen_nic_change_mtu - Change the Maximum Transfer Unit
+ * @returns 0 on success, negative on failure
+ */
+int netxen_nic_change_mtu(struct net_device *netdev, int new_mtu)
+{
+	struct netxen_port *port = netdev_priv(netdev);
+
+	if (new_mtu & NETXEN_MTU_MASK)
+		return -EINVAL;
+
+	if (new_mtu > NETXEN_MAX_MTU) {
+		printk(KERN_ERR
+		       "%s: %s MTU > NETXEN_MAX_MTU is not supported\n",
+		       netxen_nic_driver_name, netdev->name);
+		return -EINVAL;
+	}
+
+	netxen_nic_set_mtu(port, new_mtu);
+	netdev->mtu = new_mtu;
+
+	return 0;
+}
+
+/*
+ * check if the firmware has been downloaded and ready to run  and
+ * setup the address for the descriptors in the adapter
+ */
+int netxen_nic_hw_resources(struct netxen_adapter *adapter)
+{
+	struct netxen_hardware_context *hw = &adapter->ahw;
+	int i;
+	u32 state = 0;
+	void *addr;
+	int loops = 0, err = 0;
+	int ctx, ring;
+	u32 card_cmdring = 0;
+	struct netxen_rcv_desc_crb *rcv_desc_crb = NULL;
+	struct netxen_recv_context *recv_ctx;
+	struct netxen_rcv_desc_ctx *rcv_desc;
+	struct cmd_desc_type0_t *pcmd;
+
+	DPRINTK(INFO, "pci_base: %lx\n", adapter->ahw.pci_base);
+	DPRINTK(INFO, "crb_base: %lx %lx", NETXEN_PCI_CRBSPACE,
+		adapter->ahw.pci_base + NETXEN_PCI_CRBSPACE);
+	DPRINTK(INFO, "cam base: %lx %lx", NETXEN_CRB_CAM,
+		adapter->ahw.pci_base + NETXEN_CRB_CAM);
+	DPRINTK(INFO, "cam RAM: %lx %lx", NETXEN_CAM_RAM_BASE,
+		adapter->ahw.pci_base + NETXEN_CAM_RAM_BASE);
+	DPRINTK(INFO, "NIC base:%lx %lx\n", NIC_CRB_BASE_PORT1,
+		adapter->ahw.pci_base + NIC_CRB_BASE_PORT1);
+
+	/* Window 1 call */
+	card_cmdring = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_CMDRING));
+
+	DPRINTK(INFO, "Command Peg sends 0x%x for cmdring base\n",
+		card_cmdring);
+
+	for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
+		DPRINTK(INFO, "Command Peg ready..waiting for rcv peg\n");
+		loops = 0;
+		state = 0;
+		/* Window 1 call */
+		state = readl(NETXEN_CRB_NORMALIZE(adapter,
+						   recv_crb_registers[ctx].
+						   crb_rcvpeg_state));
+		while (state != PHAN_PEG_RCV_INITIALIZED && loops < 20) {
+			udelay(100);
+			/* Window 1 call */
+			state = readl(NETXEN_CRB_NORMALIZE(adapter,
+							   recv_crb_registers
+							   [ctx].
+							   crb_rcvpeg_state));
+			loops++;
+		}
+		if (loops >= 20) {
+			printk(KERN_ERR "Rcv Peg initialization not complete:"
+			       "%x.\n", state);
+			err = -EIO;
+			return err;
+		}
+	}
+	DPRINTK(INFO, "Recieve Peg ready too. starting stuff\n");
+
+	addr = pci_alloc_consistent(adapter->ahw.pdev,
+				    sizeof(struct cmd_desc_type0_t) *
+				    adapter->max_tx_desc_count,
+				    &hw->cmd_desc_phys_addr);
+	if (addr == NULL) {
+		DPRINTK(ERR, "bad return from pci_alloc_consistent\n");
+		err = -ENOMEM;
+		return err;
+	}
+
+	/* we need to prelink all of the cmd descriptors */
+	pcmd = (struct cmd_desc_type0_t *)addr;
+	for (i = 1; i < adapter->max_tx_desc_count; i++) {
+		pcmd->netxen_next =
+		    (card_cmdring + i * sizeof(struct cmd_desc_type0_t));
+		pcmd++;
+	}
+	/* fill in last link (point to first) */
+	pcmd->netxen_next = card_cmdring;
+
+	hw->cmd_desc_head = (struct cmd_desc_type0_t *)addr;
+
+	for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
+		recv_ctx = &adapter->recv_ctx[ctx];
+
+		for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
+			rcv_desc = &recv_ctx->rcv_desc[ring];
+			addr = pci_alloc_consistent(adapter->ahw.pdev,
+						    RCV_DESC_RINGSIZE,
+						    &rcv_desc->phys_addr);
+			if (addr == NULL) {
+				DPRINTK(ERR, "bad return from "
+					"pci_alloc_consistent\n");
+				netxen_free_hw_resources(adapter);
+				err = -ENOMEM;
+				return err;
+			}
+			rcv_desc->desc_head = (struct rcv_desc_t *)addr;
+		}
+
+		addr = pci_alloc_consistent(adapter->ahw.pdev,
+					    STATUS_DESC_RINGSIZE,
+					    &recv_ctx->
+					    rcv_status_desc_phys_addr);
+		if (addr == NULL) {
+			DPRINTK(ERR, "bad return from"
+				" pci_alloc_consistent\n");
+			netxen_free_hw_resources(adapter);
+			err = -ENOMEM;
+			return err;
+		}
+		recv_ctx->rcv_status_desc_head = (struct status_desc_t *)addr;
+		for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
+			rcv_desc = &recv_ctx->rcv_desc[ring];
+			rcv_desc_crb =
+			    &recv_crb_registers[ctx].rcv_desc_crb[ring];
+			DPRINTK(INFO, "ring #%d crb global ring reg 0x%x\n",
+				ring, rcv_desc_crb->crb_globalrcv_ring);
+			/* Window = 1 */
+			writel(rcv_desc->phys_addr,
+			       NETXEN_CRB_NORMALIZE(adapter,
+						    rcv_desc_crb->
+						    crb_globalrcv_ring));
+			DPRINTK(INFO, "GLOBAL_RCV_RING ctx %d, addr 0x%x"
+				" val 0x%x,"
+				" virt %p\n", ctx,
+				rcv_desc_crb->crb_globalrcv_ring,
+				rcv_desc->phys_addr, rcv_desc->desc_head);
+		}
+
+		/* Window = 1 */
+		writel(recv_ctx->rcv_status_desc_phys_addr,
+		       NETXEN_CRB_NORMALIZE(adapter,
+					    recv_crb_registers[ctx].
+					    crb_rcvstatus_ring));
+		DPRINTK(INFO, "RCVSTATUS_RING, ctx %d, addr 0x%x,"
+			" val 0x%x,virt%p\n",
+			ctx,
+			recv_crb_registers[ctx].crb_rcvstatus_ring,
+			recv_ctx->rcv_status_desc_phys_addr,
+			recv_ctx->rcv_status_desc_head);
+	}
+	/* Window = 1 */
+	writel(hw->cmd_desc_phys_addr,
+	       NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_CMD_ADDR_LO));
+
+	return err;
+}
+
+void netxen_free_hw_resources(struct netxen_adapter *adapter)
+{
+	struct netxen_recv_context *recv_ctx;
+	struct netxen_rcv_desc_ctx *rcv_desc;
+	int ctx, ring;
+
+	if (adapter->ahw.cmd_desc_head != NULL) {
+		pci_free_consistent(adapter->ahw.pdev,
+				    sizeof(struct cmd_desc_type0_t) *
+				    adapter->max_tx_desc_count,
+				    adapter->ahw.cmd_desc_head,
+				    adapter->ahw.cmd_desc_phys_addr);
+		adapter->ahw.cmd_desc_head = NULL;
+	}
+
+	for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
+		recv_ctx = &adapter->recv_ctx[ctx];
+		for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
+			rcv_desc = &recv_ctx->rcv_desc[ring];
+
+			if (rcv_desc->desc_head != NULL) {
+				pci_free_consistent(adapter->ahw.pdev,
+						    RCV_DESC_RINGSIZE,
+						    rcv_desc->desc_head,
+						    rcv_desc->phys_addr);
+				rcv_desc->desc_head = NULL;
+			}
+		}
+
+		if (recv_ctx->rcv_status_desc_head != NULL) {
+			pci_free_consistent(adapter->ahw.pdev,
+					    STATUS_DESC_RINGSIZE,
+					    recv_ctx->rcv_status_desc_head,
+					    recv_ctx->
+					    rcv_status_desc_phys_addr);
+			recv_ctx->rcv_status_desc_head = NULL;
+		}
+	}
+}
+
+void netxen_tso_check(struct netxen_adapter *adapter,
+		      struct cmd_desc_type0_t *desc, struct sk_buff *skb)
+{
+	if (desc->mss) {
+		desc->total_hdr_length = sizeof(struct ethhdr) +
+		    ((skb->nh.iph)->ihl * sizeof(u32)) +
+		    ((skb->h.th)->doff * sizeof(u32));
+		desc->opcode = TX_TCP_LSO;
+	} else if (skb->ip_summed == CHECKSUM_HW) {
+		if (skb->nh.iph->protocol == IPPROTO_TCP) {
+			desc->opcode = TX_TCP_PKT;
+		} else if (skb->nh.iph->protocol == IPPROTO_UDP) {
+			desc->opcode = TX_UDP_PKT;
+		} else {
+			return;
+		}
+	}
+	CMD_DESC_TCP_HDR_OFFSET_WRT(desc, skb->h.raw - skb->data);
+	desc->length_tcp_hdr = cpu_to_le32(desc->length_tcp_hdr);
+	desc->ip_hdr_offset = skb->nh.raw - skb->data;
+	adapter->stats.xmitcsummed++;
+}
+
+int netxen_is_flash_supported(struct netxen_adapter *adapter)
+{
+	const int locs[] = { 0, 0x4, 0x100, 0x4000, 0x4128 };
+	int addr, val01, val02, i, j;
+
+	/* if the flash size less than 4Mb, make huge war cry and die */
+	for (j = 1; j < 4; j++) {
+		addr = j * 0x100000;
+		for (i = 0; i < (sizeof(locs) / sizeof(locs[0])); i++) {
+			if (netxen_rom_fast_read(adapter, locs[i], &val01) == 0
+			    && netxen_rom_fast_read(adapter, (addr + locs[i]),
+						    &val02) == 0) {
+				if (val01 == val02)
+					return -1;
+			} else
+				return -1;
+		}
+	}
+
+	return 0;
+}
+
+static int netxen_get_flash_block(struct netxen_adapter *adapter, int base,
+				  int size, u32 * buf)
+{
+	int i, addr;
+	u32 *ptr32;
+
+	addr = base;
+	ptr32 = buf;
+	for (i = 0; i < size / sizeof(u32); i++) {
+		if (netxen_rom_fast_read(adapter, addr, ptr32) == -1)
+			return -1;
+		ptr32++;
+		addr += sizeof(u32);
+	}
+	if ((char *)buf + size > (char *)ptr32) {
+		u32 local;
+
+		if (netxen_rom_fast_read(adapter, addr, &local) == -1)
+			return -1;
+		memcpy(ptr32, &local, (char *)buf + size - (char *)ptr32);
+	}
+
+	return 0;
+}
+
+int netxen_get_flash_mac_addr(struct netxen_adapter *adapter, u64 mac[])
+{
+	u32 *pmac = (u32 *) & mac[0];
+
+	if (netxen_get_flash_block(adapter,
+				   USER_START +
+				   offsetof(struct netxen_new_user_info,
+					    mac_addr),
+				   FLASH_NUM_PORTS * sizeof(u64), pmac) == -1) {
+		return -1;
+	}
+	if (*mac == ~0ULL) {
+		if (netxen_get_flash_block(adapter,
+					   USER_START_OLD +
+					   offsetof(struct netxen_user_old_info,
+						    mac_addr),
+					   FLASH_NUM_PORTS * sizeof(u64),
+					   pmac) == -1)
+			return -1;
+		if (*mac == ~0ULL)
+			return -1;
+	}
+	return 0;
+}
+
+/*
+ * Changes the CRB window to the specified window.
+ */
+void netxen_nic_pci_change_crbwindow(struct netxen_adapter *adapter, u32 wndw)
+{
+	void __iomem *offset;
+	u32 tmp;
+	int count = 0;
+
+	if (adapter->curr_window == wndw)
+		return;
+
+	/*
+	 * Move the CRB window.
+	 * We need to write to the "direct access" region of PCI
+	 * to avoid a race condition where the window register has
+	 * not been successfully written across CRB before the target
+	 * register address is received by PCI. The direct region bypasses
+	 * the CRB bus.
+	 */
+	offset = adapter->ahw.pci_base + NETXEN_PCIX_PH_REG(PCIX_CRB_WINDOW);
+
+	if (wndw & 0x1)
+		wndw = NETXEN_WINDOW_ONE;
+
+	writel(wndw, offset);
+
+	/* MUST make sure window is set before we forge on... */
+	while ((tmp = readl(offset)) != wndw) {
+		printk(KERN_WARNING "%s: %s WARNING: CRB window value not "
+		       "registered properly: 0x%08x.\n",
+		       netxen_nic_driver_name, __FUNCTION__, tmp);
+		udelay(1000);
+		if (count >= 10)
+			break;
+		count++;
+	}
+
+	adapter->curr_window = wndw;
+}
+
+void netxen_load_firmware(struct netxen_adapter *adapter)
+{
+	int i;
+	long data, size = 0;
+	long flashaddr = NETXEN_FLASH_BASE, memaddr = NETXEN_PHANTOM_MEM_BASE;
+	u64 off;
+	ptrdiff_t addr;
+
+	size = (16 * 1024) / 4;
+	writel(1, NETXEN_CRB_NORMALIZE(adapter, NETXEN_ROMUSB_GLB_CAS_RST));
+
+	for (i = 0; i < size; i++) {
+		if (netxen_rom_fast_read(adapter, flashaddr, (int *)&data) != 0) {
+			DPRINTK(ERR,
+				"Error in netxen_rom_fast_read(). Will skip"
+				"loading flash image\n");
+			return;
+		}
+		off = netxen_nic_pci_set_window(adapter->ahw.pci_base, memaddr);
+		addr = (ptrdiff_t) (adapter->ahw.pci_base + off);
+		writel(data, (void __iomem *)addr);
+		flashaddr += 4;
+		memaddr += 4;
+	}
+	udelay(100);
+	/* make sure Casper is powered on */
+	writel(0x3fff,
+	       NETXEN_CRB_NORMALIZE(adapter, NETXEN_ROMUSB_GLB_CHIP_CLK_CTRL));
+	writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_ROMUSB_GLB_CAS_RST));
+
+	udelay(10000);
+}
+
+int
+netxen_nic_hw_write_wx(struct netxen_adapter *adapter, u64 off, void *data,
+		       int len)
+{
+	void __iomem *addr;
+
+	if (ADDR_IN_WINDOW1(off)) {
+		addr = NETXEN_CRB_NORMALIZE(adapter, off);
+	} else {		/* Window 0 */
+		addr = (void *)(ptrdiff_t) (adapter->ahw.pci_base + off);
+		netxen_nic_pci_change_crbwindow(adapter, 0);
+	}
+
+	DPRINTK(INFO, "writing to base %lx offset %llx addr %p"
+		" data %llx len %d\n",
+		adapter->ahw.pci_base, off, addr,
+		*(unsigned long long *)data, len);
+	switch (len) {
+	case 1:
+		writeb(*(u8 *) data, addr);
+		break;
+	case 2:
+		writew(*(u16 *) data, addr);
+		break;
+	case 4:
+		writel(*(u32 *) data, addr);
+		break;
+	case 8:
+		writeq(*(u64 *) data, addr);
+		break;
+	default:
+		DPRINTK(INFO,
+			"writing data %lx to offset %llx, num words=%d\n",
+			*(unsigned long *)data, off, (len >> 3));
+
+		NETXEN_NIC_HW_BLOCK_WRITE_64(data, addr, (len >> 3));
+		break;
+	}
+	if (!ADDR_IN_WINDOW1(off))
+		netxen_nic_pci_change_crbwindow(adapter, 1);
+
+	return 0;
+}
+
+int
+netxen_nic_hw_read_wx(struct netxen_adapter *adapter, u64 off, void *data,
+		      int len)
+{
+	void __iomem *addr;
+
+	if (ADDR_IN_WINDOW1(off)) {	/* Window 1 */
+		addr = NETXEN_CRB_NORMALIZE(adapter, off);
+	} else {		/* Window 0 */
+		addr = (void *)(ptrdiff_t) (adapter->ahw.pci_base + off);
+		netxen_nic_pci_change_crbwindow(adapter, 0);
+	}
+
+	DPRINTK(INFO, "reading from base %lx offset %llx addr %p\n",
+		adapter->ahw.pci_base, off, addr);
+	switch (len) {
+	case 1:
+		*(u8 *) data = readb(addr);
+		break;
+	case 2:
+		*(u16 *) data = readw(addr);
+		break;
+	case 4:
+		*(u32 *) data = readl(addr);
+		break;
+	case 8:
+		*(u64 *) data = readq(addr);
+		break;
+	default:
+		NETXEN_NIC_HW_BLOCK_READ_64(data, addr, (len >> 3));
+		break;
+	}
+	DPRINTK(INFO, "read %lx\n", *(unsigned long *)data);
+
+	if (!ADDR_IN_WINDOW1(off))
+		netxen_nic_pci_change_crbwindow(adapter, 1);
+
+	return 0;
+}
+
+void netxen_nic_reg_write(struct netxen_adapter *adapter, u64 off, u32 val)
+{				/* Only for window 1 */
+	void __iomem *addr;
+
+	addr = NETXEN_CRB_NORMALIZE(adapter, off);
+	DPRINTK(INFO, "writing to base %lx offset %llx addr %p data %x\n",
+		adapter->ahw.pci_base, off, addr, val);
+	writel(val, addr);
+
+}
+
+int netxen_nic_reg_read(struct netxen_adapter *adapter, u64 off)
+{				/* Only for window 1 */
+	void __iomem *addr;
+	int val;
+
+	addr = NETXEN_CRB_NORMALIZE(adapter, off);
+	DPRINTK(INFO, "reading from base %lx offset %llx addr %p\n",
+		adapter->ahw.pci_base, off, addr);
+	val = readl(addr);
+	writel(val, addr);
+
+	return val;
+}
+
+/* Change the window to 0, write and change back to window 1. */
+void netxen_nic_write_w0(struct netxen_adapter *adapter, u32 index, u32 value)
+{
+	void __iomem *addr;
+
+	netxen_nic_pci_change_crbwindow(adapter, 0);
+	addr = (void *)(adapter->ahw.pci_base + index);
+	writel(value, addr);
+	netxen_nic_pci_change_crbwindow(adapter, 1);
+}
+
+/* Change the window to 0, read and change back to window 1. */
+void netxen_nic_read_w0(struct netxen_adapter *adapter, u32 index, u32 * value)
+{
+	void __iomem *addr;
+
+	addr = (void *)(adapter->ahw.pci_base + index);
+
+	netxen_nic_pci_change_crbwindow(adapter, 0);
+	*value = readl(addr);
+	netxen_nic_pci_change_crbwindow(adapter, 1);
+}
+
+int netxen_pci_set_window_warning_count = 0;
+
+unsigned long
+netxen_nic_pci_set_window(void __iomem * pci_base, unsigned long long addr)
+{
+	static int ddr_mn_window = -1;
+	static int qdr_sn_window = -1;
+	int window;
+
+	if (ADDR_IN_RANGE(addr, NETXEN_ADDR_DDR_NET, NETXEN_ADDR_DDR_NET_MAX)) {
+		/* DDR network side */
+		addr -= NETXEN_ADDR_DDR_NET;
+		window = (addr >> 25) & 0x3ff;
+		if (ddr_mn_window != window) {
+			ddr_mn_window = window;
+			writel(window, (void __iomem *)(ptrdiff_t) (pci_base +
+								    NETXEN_PCIX_PH_REG
+								    (PCIX_MN_WINDOW)));
+			/* MUST make sure window is set before we forge on... */
+			readl((void __iomem *)(ptrdiff_t) (pci_base +
+							   NETXEN_PCIX_PH_REG
+							   (PCIX_MN_WINDOW)));
+		}
+		addr -= (window * 0x2000000);
+		addr += NETXEN_PCI_DDR_NET;
+	} else if (ADDR_IN_RANGE(addr, NETXEN_ADDR_OCM0, NETXEN_ADDR_OCM0_MAX)) {
+		addr -= NETXEN_ADDR_OCM0;
+		addr += NETXEN_PCI_OCM0;
+	} else if (ADDR_IN_RANGE(addr, NETXEN_ADDR_OCM1, NETXEN_ADDR_OCM1_MAX)) {
+		addr -= NETXEN_ADDR_OCM1;
+		addr += NETXEN_PCI_OCM1;
+	} else
+	    if (ADDR_IN_RANGE
+		(addr, NETXEN_ADDR_QDR_NET, NETXEN_ADDR_QDR_NET_MAX)) {
+		/* QDR network side */
+		addr -= NETXEN_ADDR_QDR_NET;
+		window = (addr >> 22) & 0x3f;
+		if (qdr_sn_window != window) {
+			qdr_sn_window = window;
+			writel((window << 22),
+			       (void __iomem *)(ptrdiff_t) (pci_base +
+							    NETXEN_PCIX_PH_REG
+							    (PCIX_SN_WINDOW)));
+			/* MUST make sure window is set before we forge on... */
+			readl((void __iomem *)(ptrdiff_t) (pci_base +
+							   NETXEN_PCIX_PH_REG
+							   (PCIX_SN_WINDOW)));
+		}
+		addr -= (window * 0x400000);
+		addr += NETXEN_PCI_QDR_NET;
+	} else {
+		/*
+		 * peg gdb frequently accesses memory that doesn't exist,
+		 * this limits the chit chat so debugging isn't slowed down.
+		 */
+		if ((netxen_pci_set_window_warning_count++ < 8)
+		    || (netxen_pci_set_window_warning_count % 64 == 0))
+			printk("%s: Warning:netxen_nic_pci_set_window()"
+			       " Unknown address range!\n",
+			       netxen_nic_driver_name);
+
+	}
+	return addr;
+}
+
+int netxen_nic_get_board_info(struct netxen_adapter *adapter)
+{
+	int rv = 0;
+	int addr = BRDCFG_START;
+	struct netxen_board_info *boardinfo;
+	int index;
+	u32 *ptr32;
+
+	boardinfo = &adapter->ahw.boardcfg;
+	ptr32 = (u32 *) boardinfo;
+
+	for (index = 0; index < sizeof(struct netxen_board_info) / sizeof(u32);
+	     index++) {
+		if (netxen_rom_fast_read(adapter, addr, ptr32) == -1) {
+			return -EIO;
+		}
+		ptr32++;
+		addr += sizeof(u32);
+	}
+	if (boardinfo->magic != NETXEN_BDINFO_MAGIC) {
+		printk("%s: ERROR reading %s board config."
+		       " Read %x, expected %x\n", netxen_nic_driver_name,
+		       netxen_nic_driver_name,
+		       boardinfo->magic, NETXEN_BDINFO_MAGIC);
+		rv = -1;
+	}
+	if (boardinfo->header_version != NETXEN_BDINFO_VERSION) {
+		printk("%s: Unknown board config version."
+		       " Read %x, expected %x\n", netxen_nic_driver_name,
+		       boardinfo->header_version, NETXEN_BDINFO_VERSION);
+		rv = -1;
+	}
+
+	DPRINTK(INFO, "Discovered board type:0x%x  ", boardinfo->board_type);
+	switch ((netxen_brdtype_t) boardinfo->board_type) {
+	case NETXEN_BRDTYPE_P2_SB35_4G:
+		adapter->ahw.board_type = NETXEN_NIC_GBE;
+		break;
+	case NETXEN_BRDTYPE_P2_SB31_10G:
+	case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
+	case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
+	case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
+		adapter->ahw.board_type = NETXEN_NIC_XGBE;
+		break;
+	case NETXEN_BRDTYPE_P1_BD:
+	case NETXEN_BRDTYPE_P1_SB:
+	case NETXEN_BRDTYPE_P1_SMAX:
+	case NETXEN_BRDTYPE_P1_SOCK:
+		adapter->ahw.board_type = NETXEN_NIC_GBE;
+		break;
+	default:
+		printk("%s: Unknown(%x)\n", netxen_nic_driver_name,
+		       boardinfo->board_type);
+		break;
+	}
+
+	return rv;
+}
+
+/* NIU access sections */
+
+/* Set the MAC address for a port */
+int netxen_nic_macaddr_set(struct netxen_port *port, u8 * addr)
+{
+	struct netxen_adapter *adapter = port->adapter;
+	int phy = port->portnum, ret = 0;
+
+	if ((phy < 0) || (phy > 3))
+		return -1;
+
+	switch (adapter->ahw.board_type) {
+	case NETXEN_NIC_GBE:
+		ret = netxen_niu_macaddr_set(adapter, phy, addr);
+		break;
+
+	case NETXEN_NIC_XGBE:
+		ret = netxen_niu_xg_macaddr_set(adapter, phy, addr);
+		break;
+
+	default:
+		dump_stack();
+		printk(KERN_ERR "%s: Unknown board type\n",
+		       netxen_nic_driver_name);
+		ret = -1;
+	}
+
+	return ret;
+}
+
+int netxen_nic_set_mtu(struct netxen_port *port, int new_mtu)
+{
+	struct netxen_adapter *adapter = port->adapter;
+	int ret = 0;
+
+	switch (adapter->ahw.board_type) {
+	case NETXEN_NIC_GBE:
+		netxen_nic_write_w0(adapter,
+				    NETXEN_NIU_GB_MAX_FRAME_SIZE(port->portnum),
+				    new_mtu);
+
+		break;
+
+	case NETXEN_NIC_XGBE:
+		new_mtu += 100;	/* so that MAC accepts frames > MTU */
+		netxen_nic_write_w0(adapter, NETXEN_NIU_XGE_MAX_FRAME_SIZE,
+				    new_mtu);
+		break;
+
+	default:
+		printk(KERN_ERR "%s: Unknown board type\n",
+		       netxen_nic_driver_name);
+		ret = -1;
+	}
+
+	return ret;
+}
+
+int netxen_nic_set_promisc_mode(struct netxen_port *port)
+{
+	struct netxen_adapter *adapter = port->adapter;
+	int phy = port->portnum;
+	int ret = 0;
+
+	if ((phy < 0) || (phy > 3))
+		return -1;
+
+	switch (adapter->ahw.board_type) {
+	case NETXEN_NIC_GBE:
+		ret = netxen_niu_set_promiscuous_mode(adapter, phy,
+						      NETXEN_NIU_PROMISCOUS_MODE);
+		break;
+
+	case NETXEN_NIC_XGBE:
+		ret = netxen_niu_xg_set_promiscuous_mode(adapter, phy,
+							 NETXEN_NIU_PROMISCOUS_MODE);
+
+		break;
+
+	default:
+		printk(KERN_ERR "%s: Unknown board type\n",
+		       netxen_nic_driver_name);
+		ret = -1;
+	}
+
+	return ret;
+}
+
+int netxen_nic_unset_promisc_mode(struct netxen_port *port)
+{
+	struct netxen_adapter *adapter = port->adapter;
+	int phy = port->portnum;
+	int ret = 0;
+
+	if ((phy < 0) || (phy > 3))
+		return -1;
+
+	switch (adapter->ahw.board_type) {
+	case NETXEN_NIC_GBE:
+		ret = netxen_niu_set_promiscuous_mode(adapter, phy,
+						      NETXEN_NIU_NON_PROMISCOUS_MODE);
+		break;
+
+	case NETXEN_NIC_XGBE:
+		ret = netxen_niu_xg_set_promiscuous_mode(adapter, phy,
+							 NETXEN_NIU_NON_PROMISCOUS_MODE);
+
+		break;
+
+	default:
+		printk(KERN_ERR "%s: Unknown board type\n",
+		       netxen_nic_driver_name);
+		ret = -1;
+	}
+
+	return ret;
+}
+
+long
+netxen_nic_phy_read(struct netxen_adapter *adapter, long phy, long reg,
+		    u32 * readval)
+{
+	long ret = 0;
+
+	switch (adapter->ahw.board_type) {
+	case NETXEN_NIC_GBE:
+		ret = netxen_niu_gbe_phy_read(adapter, phy, reg, readval);
+		break;
+
+	case NETXEN_NIC_XGBE:
+		printk(KERN_ERR "%s: Function %s is not implemented for XG\n",
+		       netxen_nic_driver_name, __FUNCTION__);
+		ret = -1;
+		break;
+
+	default:
+		printk(KERN_ERR "%s: Unknown board type\n",
+		       netxen_nic_driver_name);
+		ret = -1;
+	}
+
+	return ret;
+}
+
+long netxen_nic_phy_write(struct netxen_adapter *adapter, long phy, long reg,
+			  u32 val)
+{
+	long ret = 0;
+
+	switch (adapter->ahw.board_type) {
+	case NETXEN_NIC_GBE:
+		ret = netxen_niu_gbe_phy_write(adapter, phy, reg, val);
+		break;
+
+	case NETXEN_NIC_XGBE:
+		printk(KERN_ERR "%s: Function %s is not implemented for XG\n",
+		       netxen_nic_driver_name, __FUNCTION__);
+		ret = -1;
+		break;
+
+	default:
+		printk(KERN_ERR "%s: Unknown board type\n",
+		       netxen_nic_driver_name);
+		ret = -1;
+	}
+
+	return ret;
+}
+
+long netxen_nic_init_port(struct netxen_port *port)
+{
+	struct netxen_adapter *adapter = port->adapter;
+	long portnum = port->portnum;
+	long ret = 0;
+
+	switch (adapter->ahw.board_type) {
+	case NETXEN_NIC_GBE:
+		netxen_nic_disable_phy_interrupts(adapter, portnum);
+		udelay(2000);
+		netxen_niu_gbe_init_port(adapter, portnum);
+
+		break;
+
+	case NETXEN_NIC_XGBE:
+		/* Nothing to be done for XG */
+		break;
+
+	default:
+		printk(KERN_ERR "%s: Unknown board type\n",
+		       netxen_nic_driver_name);
+		ret = -1;
+	}
+
+	return ret;
+}
+
+void netxen_nic_init_niu(struct netxen_adapter *adapter)
+{
+	int portno;
+
+	switch (adapter->ahw.board_type) {
+	case NETXEN_NIC_GBE:
+		for (portno = 0; portno < NETXEN_NIU_MAX_GBE_PORTS; portno++)
+			netxen_niu_gbe_init_port(adapter, portno);
+		break;
+
+	case NETXEN_NIC_XGBE:
+		/* Do nothing */
+		break;
+
+	default:
+		printk(KERN_ERR "%s: Unknown board type\n",
+		       netxen_nic_driver_name);
+	}
+}
+
+void netxen_nic_stop_port(struct netxen_port *port)
+{
+	long portnum = port->portnum;
+	struct netxen_adapter *adapter = port->adapter;
+
+	switch (adapter->ahw.board_type) {
+	case NETXEN_NIC_GBE:
+		netxen_niu_disable_gbe_port(adapter, portnum);
+		break;
+
+	case NETXEN_NIC_XGBE:
+		netxen_niu_disable_xg_port(adapter, portnum);
+		break;
+
+	default:
+		printk(KERN_ERR "%s: Unknown board type\n",
+		       netxen_nic_driver_name);
+	}
+}
+
+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];
+		netxen_nic_stop_port(port);
+	}
+}
+
+void
+netxen_crb_writelit_adapter(struct netxen_adapter *adapter, unsigned long off,
+			    int data)
+{
+	void __iomem *addr;
+
+	if (ADDR_IN_WINDOW1(off)) {
+		writel(data, NETXEN_CRB_NORMALIZE(adapter, off));
+	} else {
+		netxen_nic_pci_change_crbwindow(adapter, 0);
+		addr = (void *)(adapter->ahw.pci_base + off);
+		writel(data, addr);
+		netxen_nic_pci_change_crbwindow(adapter, 1);
+	}
+}
+
+void netxen_nic_set_link_parameters(struct netxen_port *port)
+{
+	struct netxen_adapter *adapter = port->adapter;
+	netxen_niu_phy_status status;
+	u16 autoneg;
+	netxen_niu_control mode;
+
+	netxen_nic_read_w0(adapter, NETXEN_NIU_MODE, &mode);
+	if (netxen_get_niu_enable_ge(mode)) {	/* Gb 10/100/1000 Mbps mode */
+		if (netxen_nic_phy_read(port->adapter, port->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;
+					break;
+				case 1:
+					port->link_speed = SPEED_100;
+					break;
+				case 2:
+					port->link_speed = SPEED_1000;
+					break;
+				default:
+					port->link_speed = -1;	/* unknown speed */
+					break;
+				}
+				switch (netxen_get_phy_duplex(status)) {
+				case 0:
+					port->link_duplex = DUPLEX_HALF;
+					break;
+				case 1:
+					port->link_duplex = DUPLEX_FULL;
+					break;
+				default:
+					port->link_duplex = -1;	/* unknown mode */
+					break;
+				}
+				if (netxen_nic_phy_read(port->adapter,
+							port->portnum,
+							NETXEN_NIU_GB_MII_MGMT_ADDR_AUTONEG,
+							(netxen_crbword_t *) &
+							autoneg) != 0)
+					port->link_autoneg = autoneg;
+			} else
+				goto link_down;
+		} else {
+		      link_down:
+			port->link_speed = -1;
+			port->link_duplex = -1;
+		}
+	}
+}
+
+void netxen_nic_flash_print(struct netxen_adapter *adapter)
+{
+	int valid = 1;
+	u32 fw_major = 0;
+	u32 fw_minor = 0;
+	u32 fw_build = 0;
+
+	struct netxen_board_info *board_info = &(adapter->ahw.boardcfg);
+	if (board_info->magic != NETXEN_BDINFO_MAGIC) {
+		printk
+		    ("NetXen Unknown board config, Read 0x%x expected as 0x%x\n",
+		     board_info->magic, NETXEN_BDINFO_MAGIC);
+		valid = 0;
+	}
+	if (board_info->header_version != NETXEN_BDINFO_VERSION) {
+		printk("NetXen Unknown board config version."
+		       " Read %x, expected %x\n",
+		       board_info->header_version, NETXEN_BDINFO_VERSION);
+		valid = 0;
+	}
+	if (valid) {
+		printk("NetXen %s Board #%d, Chip id 0x%x\n",
+		       board_info->board_type == 0x0b ? "XGB" : "GBE",
+		       board_info->board_num, board_info->chip_id);
+		fw_major = readl(NETXEN_CRB_NORMALIZE(adapter,
+						      NETXEN_FW_VERSION_MAJOR));
+		fw_minor = readl(NETXEN_CRB_NORMALIZE(adapter,
+						      NETXEN_FW_VERSION_MINOR));
+		fw_build =
+		    readl(NETXEN_CRB_NORMALIZE(adapter, NETXEN_FW_VERSION_SUB));
+
+		printk("NetXen Firmware version %d.%d.%d\n", fw_major, fw_minor,
+		       fw_build);
+	}
+	if (fw_major != _NETXEN_NIC_LINUX_MAJOR) {
+		printk(KERN_ERR "The mismatch in driver version and firmware "
+		       "version major number\n"
+		       "Driver version major number = %d \t"
+		       "Firmware version major number = %d \n",
+		       _NETXEN_NIC_LINUX_MAJOR, fw_major);
+		adapter->driver_mismatch = 1;
+	}
+	if (fw_minor != _NETXEN_NIC_LINUX_MINOR) {
+		printk(KERN_ERR "The mismatch in driver version and firmware "
+		       "version minor number\n"
+		       "Driver version minor number = %d \t"
+		       "Firmware version minor number = %d \n",
+		       _NETXEN_NIC_LINUX_MINOR, fw_minor);
+		adapter->driver_mismatch = 1;
+	}
+	if (adapter->driver_mismatch)
+		printk(KERN_INFO "Use the driver with version no %d.%d.xxx\n",
+		       fw_major, fw_minor);
+}
+
+long netxen_crb_read_val(struct netxen_adapter *adapter, unsigned long off)
+{
+	int data;
+	netxen_nic_hw_read_wx(adapter, off, &data, 4);
+	return data;
+}