1/*
   2 * Copyright (C) 2003 - 2009 NetXen, Inc.
   3 * Copyright (C) 2009 - QLogic Corporation.
   4 * All rights reserved.
   5 *
   6 * This program is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU General Public License
   8 * as published by the Free Software Foundation; either version 2
   9 * of the License, or (at your option) any later version.
  10 *
  11 * This program is distributed in the hope that it will be useful, but
  12 * WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, write to the Free Software
  18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  19 * MA  02111-1307, USA.
  20 *
  21 * The full GNU General Public License is included in this distribution
  22 * in the file called "COPYING".
  23 *
  24 */
  25
  26#include <linux/slab.h>
  27#include <linux/vmalloc.h>
  28#include <linux/interrupt.h>
  29#include "netxen_nic_hw.h"
  30
  31#include "netxen_nic.h"
  32
  33#include <linux/dma-mapping.h>
  34#include <linux/if_vlan.h>
  35#include <net/ip.h>
  36#include <linux/ipv6.h>
  37#include <linux/inetdevice.h>
  38#include <linux/sysfs.h>
  39#include <linux/aer.h>
  40
  41MODULE_DESCRIPTION("QLogic/NetXen (1/10) GbE Intelligent Ethernet Driver");
  42MODULE_LICENSE("GPL");
  43MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
  44MODULE_FIRMWARE(NX_UNIFIED_ROMIMAGE_NAME);
  45
  46char netxen_nic_driver_name[] = "netxen_nic";
  47static char netxen_nic_driver_string[] = "QLogic/NetXen Network Driver v"
  48    NETXEN_NIC_LINUX_VERSIONID;
  49
  50static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
  51
  52/* Default to restricted 1G auto-neg mode */
  53static int wol_port_mode = 5;
  54
  55static int use_msi = 1;
  56
  57static int use_msi_x = 1;
  58
  59static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
  60module_param(auto_fw_reset, int, 0644);
  61MODULE_PARM_DESC(auto_fw_reset,"Auto firmware reset (0=disabled, 1=enabled");
  62
  63static int __devinit netxen_nic_probe(struct pci_dev *pdev,
  64		const struct pci_device_id *ent);
  65static void __devexit netxen_nic_remove(struct pci_dev *pdev);
  66static int netxen_nic_open(struct net_device *netdev);
  67static int netxen_nic_close(struct net_device *netdev);
  68static netdev_tx_t netxen_nic_xmit_frame(struct sk_buff *,
  69					       struct net_device *);
  70static void netxen_tx_timeout(struct net_device *netdev);
  71static void netxen_tx_timeout_task(struct work_struct *work);
  72static void netxen_fw_poll_work(struct work_struct *work);
  73static void netxen_schedule_work(struct netxen_adapter *adapter,
  74		work_func_t func, int delay);
  75static void netxen_cancel_fw_work(struct netxen_adapter *adapter);
  76static int netxen_nic_poll(struct napi_struct *napi, int budget);
  77#ifdef CONFIG_NET_POLL_CONTROLLER
  78static void netxen_nic_poll_controller(struct net_device *netdev);
  79#endif
  80
  81static void netxen_create_sysfs_entries(struct netxen_adapter *adapter);
  82static void netxen_remove_sysfs_entries(struct netxen_adapter *adapter);
  83static void netxen_create_diag_entries(struct netxen_adapter *adapter);
  84static void netxen_remove_diag_entries(struct netxen_adapter *adapter);
  85static int nx_dev_request_aer(struct netxen_adapter *adapter);
  86static int nx_decr_dev_ref_cnt(struct netxen_adapter *adapter);
  87static int netxen_can_start_firmware(struct netxen_adapter *adapter);
  88
  89static irqreturn_t netxen_intr(int irq, void *data);
  90static irqreturn_t netxen_msi_intr(int irq, void *data);
  91static irqreturn_t netxen_msix_intr(int irq, void *data);
  92
  93static void netxen_free_vlan_ip_list(struct netxen_adapter *);
  94static void netxen_restore_indev_addr(struct net_device *dev, unsigned long);
  95static struct rtnl_link_stats64 *netxen_nic_get_stats(struct net_device *dev,
  96						      struct rtnl_link_stats64 *stats);
  97static int netxen_nic_set_mac(struct net_device *netdev, void *p);
  98
  99/*  PCI Device ID Table  */
 100#define ENTRY(device) \
 101	{PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
 102	.class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
 103
 104static DEFINE_PCI_DEVICE_TABLE(netxen_pci_tbl) = {
 105	ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
 106	ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
 107	ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
 108	ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
 109	ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
 110	ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
 111	ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
 112	ENTRY(PCI_DEVICE_ID_NX3031),
 113	{0,}
 114};
 115
 116MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
 117
 118static uint32_t crb_cmd_producer[4] = {
 119	CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
 120	CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
 121};
 122
 123void
 124netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
 125		struct nx_host_tx_ring *tx_ring)
 126{
 127	NXWRIO(adapter, tx_ring->crb_cmd_producer, tx_ring->producer);
 128}
 129
 130static uint32_t crb_cmd_consumer[4] = {
 131	CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
 132	CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
 133};
 134
 135static inline void
 136netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
 137		struct nx_host_tx_ring *tx_ring)
 138{
 139	NXWRIO(adapter, tx_ring->crb_cmd_consumer, tx_ring->sw_consumer);
 140}
 141
 142static uint32_t msi_tgt_status[8] = {
 143	ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
 144	ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
 145	ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
 146	ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
 147};
 148
 149static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
 150
 151static inline void netxen_nic_disable_int(struct nx_host_sds_ring *sds_ring)
 152{
 153	struct netxen_adapter *adapter = sds_ring->adapter;
 154
 155	NXWRIO(adapter, sds_ring->crb_intr_mask, 0);
 156}
 157
 158static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring)
 159{
 160	struct netxen_adapter *adapter = sds_ring->adapter;
 161
 162	NXWRIO(adapter, sds_ring->crb_intr_mask, 0x1);
 163
 164	if (!NETXEN_IS_MSI_FAMILY(adapter))
 165		NXWRIO(adapter, adapter->tgt_mask_reg, 0xfbff);
 166}
 167
 168static int
 169netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count)
 170{
 171	int size = sizeof(struct nx_host_sds_ring) * count;
 172
 173	recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
 174
 175	return recv_ctx->sds_rings == NULL;
 176}
 177
 178static void
 179netxen_free_sds_rings(struct netxen_recv_context *recv_ctx)
 180{
 181	if (recv_ctx->sds_rings != NULL)
 182		kfree(recv_ctx->sds_rings);
 183
 184	recv_ctx->sds_rings = NULL;
 185}
 186
 187static int
 188netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
 189{
 190	int ring;
 191	struct nx_host_sds_ring *sds_ring;
 192	struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
 193
 194	if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
 195		return -ENOMEM;
 196
 197	for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 198		sds_ring = &recv_ctx->sds_rings[ring];
 199		netif_napi_add(netdev, &sds_ring->napi,
 200				netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
 201	}
 202
 203	return 0;
 204}
 205
 206static void
 207netxen_napi_del(struct netxen_adapter *adapter)
 208{
 209	int ring;
 210	struct nx_host_sds_ring *sds_ring;
 211	struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
 212
 213	for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 214		sds_ring = &recv_ctx->sds_rings[ring];
 215		netif_napi_del(&sds_ring->napi);
 216	}
 217
 218	netxen_free_sds_rings(&adapter->recv_ctx);
 219}
 220
 221static void
 222netxen_napi_enable(struct netxen_adapter *adapter)
 223{
 224	int ring;
 225	struct nx_host_sds_ring *sds_ring;
 226	struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
 227
 228	for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 229		sds_ring = &recv_ctx->sds_rings[ring];
 230		napi_enable(&sds_ring->napi);
 231		netxen_nic_enable_int(sds_ring);
 232	}
 233}
 234
 235static void
 236netxen_napi_disable(struct netxen_adapter *adapter)
 237{
 238	int ring;
 239	struct nx_host_sds_ring *sds_ring;
 240	struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
 241
 242	for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 243		sds_ring = &recv_ctx->sds_rings[ring];
 244		netxen_nic_disable_int(sds_ring);
 245		napi_synchronize(&sds_ring->napi);
 246		napi_disable(&sds_ring->napi);
 247	}
 248}
 249
 250static int nx_set_dma_mask(struct netxen_adapter *adapter)
 251{
 252	struct pci_dev *pdev = adapter->pdev;
 253	uint64_t mask, cmask;
 254
 255	adapter->pci_using_dac = 0;
 256
 257	mask = DMA_BIT_MASK(32);
 258	cmask = DMA_BIT_MASK(32);
 259
 260	if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 261#ifndef CONFIG_IA64
 262		mask = DMA_BIT_MASK(35);
 263#endif
 264	} else {
 265		mask = DMA_BIT_MASK(39);
 266		cmask = mask;
 267	}
 268
 269	if (pci_set_dma_mask(pdev, mask) == 0 &&
 270		pci_set_consistent_dma_mask(pdev, cmask) == 0) {
 271		adapter->pci_using_dac = 1;
 272		return 0;
 273	}
 274
 275	return -EIO;
 276}
 277
 278/* Update addressable range if firmware supports it */
 279static int
 280nx_update_dma_mask(struct netxen_adapter *adapter)
 281{
 282	int change, shift, err;
 283	uint64_t mask, old_mask, old_cmask;
 284	struct pci_dev *pdev = adapter->pdev;
 285
 286	change = 0;
 287
 288	shift = NXRD32(adapter, CRB_DMA_SHIFT);
 289	if (shift > 32)
 290		return 0;
 291
 292	if (NX_IS_REVISION_P3(adapter->ahw.revision_id) && (shift > 9))
 293		change = 1;
 294	else if ((adapter->ahw.revision_id == NX_P2_C1) && (shift <= 4))
 295		change = 1;
 296
 297	if (change) {
 298		old_mask = pdev->dma_mask;
 299		old_cmask = pdev->dev.coherent_dma_mask;
 300
 301		mask = DMA_BIT_MASK(32+shift);
 302
 303		err = pci_set_dma_mask(pdev, mask);
 304		if (err)
 305			goto err_out;
 306
 307		if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 308
 309			err = pci_set_consistent_dma_mask(pdev, mask);
 310			if (err)
 311				goto err_out;
 312		}
 313		dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
 314	}
 315
 316	return 0;
 317
 318err_out:
 319	pci_set_dma_mask(pdev, old_mask);
 320	pci_set_consistent_dma_mask(pdev, old_cmask);
 321	return err;
 322}
 323
 324static int
 325netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
 326{
 327	u32 val, timeout;
 328
 329	if (first_boot == 0x55555555) {
 330		/* This is the first boot after power up */
 331		NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
 332
 333		if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
 334			return 0;
 335
 336		/* PCI bus master workaround */
 337		first_boot = NXRD32(adapter, NETXEN_PCIE_REG(0x4));
 338		if (!(first_boot & 0x4)) {
 339			first_boot |= 0x4;
 340			NXWR32(adapter, NETXEN_PCIE_REG(0x4), first_boot);
 341			NXRD32(adapter, NETXEN_PCIE_REG(0x4));
 342		}
 343
 344		/* This is the first boot after power up */
 345		first_boot = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
 346		if (first_boot != 0x80000f) {
 347			/* clear the register for future unloads/loads */
 348			NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), 0);
 349			return -EIO;
 350		}
 351
 352		/* Start P2 boot loader */
 353		val = NXRD32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
 354		NXWR32(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
 355		timeout = 0;
 356		do {
 357			msleep(1);
 358			val = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
 359
 360			if (++timeout > 5000)
 361				return -EIO;
 362
 363		} while (val == NETXEN_BDINFO_MAGIC);
 364	}
 365	return 0;
 366}
 367
 368static void netxen_set_port_mode(struct netxen_adapter *adapter)
 369{
 370	u32 val, data;
 371
 372	val = adapter->ahw.board_type;
 373	if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
 374		(val == NETXEN_BRDTYPE_P3_XG_LOM)) {
 375		if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
 376			data = NETXEN_PORT_MODE_802_3_AP;
 377			NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
 378		} else if (port_mode == NETXEN_PORT_MODE_XG) {
 379			data = NETXEN_PORT_MODE_XG;
 380			NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
 381		} else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
 382			data = NETXEN_PORT_MODE_AUTO_NEG_1G;
 383			NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
 384		} else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
 385			data = NETXEN_PORT_MODE_AUTO_NEG_XG;
 386			NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
 387		} else {
 388			data = NETXEN_PORT_MODE_AUTO_NEG;
 389			NXWR32(adapter, NETXEN_PORT_MODE_ADDR, data);
 390		}
 391
 392		if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
 393			(wol_port_mode != NETXEN_PORT_MODE_XG) &&
 394			(wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
 395			(wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
 396			wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
 397		}
 398		NXWR32(adapter, NETXEN_WOL_PORT_MODE, wol_port_mode);
 399	}
 400}
 401
 402#define PCI_CAP_ID_GEN  0x10
 403
 404static void netxen_pcie_strap_init(struct netxen_adapter *adapter)
 405{
 406	u32 pdevfuncsave;
 407	u32 c8c9value = 0;
 408	u32 chicken = 0;
 409	u32 control = 0;
 410	int i, pos;
 411	struct pci_dev *pdev;
 412
 413	pdev = adapter->pdev;
 414
 415	chicken = NXRD32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3));
 416	/* clear chicken3.25:24 */
 417	chicken &= 0xFCFFFFFF;
 418	/*
 419	 * if gen1 and B0, set F1020 - if gen 2, do nothing
 420	 * if gen2 set to F1000
 421	 */
 422	pos = pci_find_capability(pdev, PCI_CAP_ID_GEN);
 423	if (pos == 0xC0) {
 424		pci_read_config_dword(pdev, pos + 0x10, &control);
 425		if ((control & 0x000F0000) != 0x00020000) {
 426			/*  set chicken3.24 if gen1 */
 427			chicken |= 0x01000000;
 428		}
 429		dev_info(&adapter->pdev->dev, "Gen2 strapping detected\n");
 430		c8c9value = 0xF1000;
 431	} else {
 432		/* set chicken3.24 if gen1 */
 433		chicken |= 0x01000000;
 434		dev_info(&adapter->pdev->dev, "Gen1 strapping detected\n");
 435		if (adapter->ahw.revision_id == NX_P3_B0)
 436			c8c9value = 0xF1020;
 437		else
 438			c8c9value = 0;
 439	}
 440
 441	NXWR32(adapter, NETXEN_PCIE_REG(PCIE_CHICKEN3), chicken);
 442
 443	if (!c8c9value)
 444		return;
 445
 446	pdevfuncsave = pdev->devfn;
 447	if (pdevfuncsave & 0x07)
 448		return;
 449
 450	for (i = 0; i < 8; i++) {
 451		pci_read_config_dword(pdev, pos + 8, &control);
 452		pci_read_config_dword(pdev, pos + 8, &control);
 453		pci_write_config_dword(pdev, pos + 8, c8c9value);
 454		pdev->devfn++;
 455	}
 456	pdev->devfn = pdevfuncsave;
 457}
 458
 459static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
 460{
 461	u32 control;
 462	int pos;
 463
 464	pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
 465	if (pos) {
 466		pci_read_config_dword(pdev, pos, &control);
 467		if (enable)
 468			control |= PCI_MSIX_FLAGS_ENABLE;
 469		else
 470			control = 0;
 471		pci_write_config_dword(pdev, pos, control);
 472	}
 473}
 474
 475static void netxen_init_msix_entries(struct netxen_adapter *adapter, int count)
 476{
 477	int i;
 478
 479	for (i = 0; i < count; i++)
 480		adapter->msix_entries[i].entry = i;
 481}
 482
 483static int
 484netxen_read_mac_addr(struct netxen_adapter *adapter)
 485{
 486	int i;
 487	unsigned char *p;
 488	u64 mac_addr;
 489	struct net_device *netdev = adapter->netdev;
 490	struct pci_dev *pdev = adapter->pdev;
 491
 492	if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 493		if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
 494			return -EIO;
 495	} else {
 496		if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
 497			return -EIO;
 498	}
 499
 500	p = (unsigned char *)&mac_addr;
 501	for (i = 0; i < 6; i++)
 502		netdev->dev_addr[i] = *(p + 5 - i);
 503
 504	memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
 505	memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
 506
 507	/* set station address */
 508
 509	if (!is_valid_ether_addr(netdev->perm_addr))
 510		dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
 511
 512	return 0;
 513}
 514
 515static int netxen_nic_set_mac(struct net_device *netdev, void *p)
 516{
 517	struct netxen_adapter *adapter = netdev_priv(netdev);
 518	struct sockaddr *addr = p;
 519
 520	if (!is_valid_ether_addr(addr->sa_data))
 521		return -EADDRNOTAVAIL;
 522
 523	if (netif_running(netdev)) {
 524		netif_device_detach(netdev);
 525		netxen_napi_disable(adapter);
 526	}
 527
 528	memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
 529	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 530	adapter->macaddr_set(adapter, addr->sa_data);
 531
 532	if (netif_running(netdev)) {
 533		netif_device_attach(netdev);
 534		netxen_napi_enable(adapter);
 535	}
 536	return 0;
 537}
 538
 539static void netxen_set_multicast_list(struct net_device *dev)
 540{
 541	struct netxen_adapter *adapter = netdev_priv(dev);
 542
 543	adapter->set_multi(dev);
 544}
 545
 546static netdev_features_t netxen_fix_features(struct net_device *dev,
 547	netdev_features_t features)
 548{
 549	if (!(features & NETIF_F_RXCSUM)) {
 550		netdev_info(dev, "disabling LRO as RXCSUM is off\n");
 551
 552		features &= ~NETIF_F_LRO;
 553	}
 554
 555	return features;
 556}
 557
 558static int netxen_set_features(struct net_device *dev,
 559	netdev_features_t features)
 560{
 561	struct netxen_adapter *adapter = netdev_priv(dev);
 562	int hw_lro;
 563
 564	if (!((dev->features ^ features) & NETIF_F_LRO))
 565		return 0;
 566
 567	hw_lro = (features & NETIF_F_LRO) ? NETXEN_NIC_LRO_ENABLED
 568	         : NETXEN_NIC_LRO_DISABLED;
 569
 570	if (netxen_config_hw_lro(adapter, hw_lro))
 571		return -EIO;
 572
 573	if (!(features & NETIF_F_LRO) && netxen_send_lro_cleanup(adapter))
 574		return -EIO;
 575
 576	return 0;
 577}
 578
 579static const struct net_device_ops netxen_netdev_ops = {
 580	.ndo_open	   = netxen_nic_open,
 581	.ndo_stop	   = netxen_nic_close,
 582	.ndo_start_xmit    = netxen_nic_xmit_frame,
 583	.ndo_get_stats64   = netxen_nic_get_stats,
 584	.ndo_validate_addr = eth_validate_addr,
 585	.ndo_set_rx_mode   = netxen_set_multicast_list,
 586	.ndo_set_mac_address    = netxen_nic_set_mac,
 587	.ndo_change_mtu	   = netxen_nic_change_mtu,
 588	.ndo_tx_timeout	   = netxen_tx_timeout,
 589	.ndo_fix_features = netxen_fix_features,
 590	.ndo_set_features = netxen_set_features,
 591#ifdef CONFIG_NET_POLL_CONTROLLER
 592	.ndo_poll_controller = netxen_nic_poll_controller,
 593#endif
 594};
 595
 596static void
 597netxen_setup_intr(struct netxen_adapter *adapter)
 598{
 599	struct netxen_legacy_intr_set *legacy_intrp;
 600	struct pci_dev *pdev = adapter->pdev;
 601	int err, num_msix;
 602
 603	if (adapter->rss_supported) {
 604		num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
 605			MSIX_ENTRIES_PER_ADAPTER : 2;
 606	} else
 607		num_msix = 1;
 608
 609	adapter->max_sds_rings = 1;
 610
 611	adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
 612
 613	if (adapter->ahw.revision_id >= NX_P3_B0)
 614		legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
 615	else
 616		legacy_intrp = &legacy_intr[0];
 617
 618	adapter->int_vec_bit = legacy_intrp->int_vec_bit;
 619	adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
 620			legacy_intrp->tgt_status_reg);
 621	adapter->tgt_mask_reg = netxen_get_ioaddr(adapter,
 622			legacy_intrp->tgt_mask_reg);
 623	adapter->pci_int_reg = netxen_get_ioaddr(adapter,
 624			legacy_intrp->pci_int_reg);
 625	adapter->isr_int_vec = netxen_get_ioaddr(adapter, ISR_INT_VECTOR);
 626
 627	if (adapter->ahw.revision_id >= NX_P3_B1)
 628		adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
 629			ISR_INT_STATE_REG);
 630	else
 631		adapter->crb_int_state_reg = netxen_get_ioaddr(adapter,
 632			CRB_INT_VECTOR);
 633
 634	netxen_set_msix_bit(pdev, 0);
 635
 636	if (adapter->msix_supported) {
 637
 638		netxen_init_msix_entries(adapter, num_msix);
 639		err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
 640		if (err == 0) {
 641			adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
 642			netxen_set_msix_bit(pdev, 1);
 643
 644			if (adapter->rss_supported)
 645				adapter->max_sds_rings = num_msix;
 646
 647			dev_info(&pdev->dev, "using msi-x interrupts\n");
 648			return;
 649		}
 650
 651		if (err > 0)
 652			pci_disable_msix(pdev);
 653
 654		/* fall through for msi */
 655	}
 656
 657	if (use_msi && !pci_enable_msi(pdev)) {
 658		adapter->flags |= NETXEN_NIC_MSI_ENABLED;
 659		adapter->tgt_status_reg = netxen_get_ioaddr(adapter,
 660				msi_tgt_status[adapter->ahw.pci_func]);
 661		dev_info(&pdev->dev, "using msi interrupts\n");
 662		adapter->msix_entries[0].vector = pdev->irq;
 663		return;
 664	}
 665
 666	dev_info(&pdev->dev, "using legacy interrupts\n");
 667	adapter->msix_entries[0].vector = pdev->irq;
 668}
 669
 670static void
 671netxen_teardown_intr(struct netxen_adapter *adapter)
 672{
 673	if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
 674		pci_disable_msix(adapter->pdev);
 675	if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
 676		pci_disable_msi(adapter->pdev);
 677}
 678
 679static void
 680netxen_cleanup_pci_map(struct netxen_adapter *adapter)
 681{
 682	if (adapter->ahw.db_base != NULL)
 683		iounmap(adapter->ahw.db_base);
 684	if (adapter->ahw.pci_base0 != NULL)
 685		iounmap(adapter->ahw.pci_base0);
 686	if (adapter->ahw.pci_base1 != NULL)
 687		iounmap(adapter->ahw.pci_base1);
 688	if (adapter->ahw.pci_base2 != NULL)
 689		iounmap(adapter->ahw.pci_base2);
 690}
 691
 692static int
 693netxen_setup_pci_map(struct netxen_adapter *adapter)
 694{
 695	void __iomem *db_ptr = NULL;
 696
 697	resource_size_t mem_base, db_base;
 698	unsigned long mem_len, db_len = 0;
 699
 700	struct pci_dev *pdev = adapter->pdev;
 701	int pci_func = adapter->ahw.pci_func;
 702	struct netxen_hardware_context *ahw = &adapter->ahw;
 703
 704	int err = 0;
 705
 706	/*
 707	 * Set the CRB window to invalid. If any register in window 0 is
 708	 * accessed it should set the window to 0 and then reset it to 1.
 709	 */
 710	adapter->ahw.crb_win = -1;
 711	adapter->ahw.ocm_win = -1;
 712
 713	/* remap phys address */
 714	mem_base = pci_resource_start(pdev, 0);	/* 0 is for BAR 0 */
 715	mem_len = pci_resource_len(pdev, 0);
 716
 717	/* 128 Meg of memory */
 718	if (mem_len == NETXEN_PCI_128MB_SIZE) {
 719
 720		ahw->pci_base0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
 721		ahw->pci_base1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
 722				SECOND_PAGE_GROUP_SIZE);
 723		ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
 724				THIRD_PAGE_GROUP_SIZE);
 725		if (ahw->pci_base0 == NULL || ahw->pci_base1 == NULL ||
 726						ahw->pci_base2 == NULL) {
 727			dev_err(&pdev->dev, "failed to map PCI bar 0\n");
 728			err = -EIO;
 729			goto err_out;
 730		}
 731
 732		ahw->pci_len0 = FIRST_PAGE_GROUP_SIZE;
 733
 734	} else if (mem_len == NETXEN_PCI_32MB_SIZE) {
 735
 736		ahw->pci_base1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
 737		ahw->pci_base2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
 738			SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
 739		if (ahw->pci_base1 == NULL || ahw->pci_base2 == NULL) {
 740			dev_err(&pdev->dev, "failed to map PCI bar 0\n");
 741			err = -EIO;
 742			goto err_out;
 743		}
 744
 745	} else if (mem_len == NETXEN_PCI_2MB_SIZE) {
 746
 747		ahw->pci_base0 = pci_ioremap_bar(pdev, 0);
 748		if (ahw->pci_base0 == NULL) {
 749			dev_err(&pdev->dev, "failed to map PCI bar 0\n");
 750			return -EIO;
 751		}
 752		ahw->pci_len0 = mem_len;
 753	} else {
 754		return -EIO;
 755	}
 756
 757	netxen_setup_hwops(adapter);
 758
 759	dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
 760
 761	if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
 762		adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
 763			NETXEN_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
 764
 765	} else if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 766		adapter->ahw.ocm_win_crb = netxen_get_ioaddr(adapter,
 767			NETXEN_PCIX_PS_REG(PCIE_MN_WINDOW_REG(pci_func)));
 768	}
 769
 770	if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 771		goto skip_doorbell;
 772
 773	db_base = pci_resource_start(pdev, 4);	/* doorbell is on bar 4 */
 774	db_len = pci_resource_len(pdev, 4);
 775
 776	if (db_len == 0) {
 777		printk(KERN_ERR "%s: doorbell is disabled\n",
 778				netxen_nic_driver_name);
 779		err = -EIO;
 780		goto err_out;
 781	}
 782
 783	db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
 784	if (!db_ptr) {
 785		printk(KERN_ERR "%s: Failed to allocate doorbell map.",
 786				netxen_nic_driver_name);
 787		err = -EIO;
 788		goto err_out;
 789	}
 790
 791skip_doorbell:
 792	adapter->ahw.db_base = db_ptr;
 793	adapter->ahw.db_len = db_len;
 794	return 0;
 795
 796err_out:
 797	netxen_cleanup_pci_map(adapter);
 798	return err;
 799}
 800
 801static void
 802netxen_check_options(struct netxen_adapter *adapter)
 803{
 804	u32 fw_major, fw_minor, fw_build, prev_fw_version;
 805	char brd_name[NETXEN_MAX_SHORT_NAME];
 806	char serial_num[32];
 807	int i, offset, val, err;
 808	__le32 *ptr32;
 809	struct pci_dev *pdev = adapter->pdev;
 810
 811	adapter->driver_mismatch = 0;
 812
 813	ptr32 = (__le32 *)&serial_num;
 814	offset = NX_FW_SERIAL_NUM_OFFSET;
 815	for (i = 0; i < 8; i++) {
 816		if (netxen_rom_fast_read(adapter, offset, &val) == -1) {
 817			dev_err(&pdev->dev, "error reading board info\n");
 818			adapter->driver_mismatch = 1;
 819			return;
 820		}
 821		ptr32[i] = cpu_to_le32(val);
 822		offset += sizeof(u32);
 823	}
 824
 825	fw_major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
 826	fw_minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
 827	fw_build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
 828	prev_fw_version = adapter->fw_version;
 829	adapter->fw_version = NETXEN_VERSION_CODE(fw_major, fw_minor, fw_build);
 830
 831	/* Get FW Mini Coredump template and store it */
 832	 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 833		if (adapter->mdump.md_template == NULL ||
 834				adapter->fw_version > prev_fw_version) {
 835			kfree(adapter->mdump.md_template);
 836			adapter->mdump.md_template = NULL;
 837			err = netxen_setup_minidump(adapter);
 838			if (err)
 839				dev_err(&adapter->pdev->dev,
 840				"Failed to setup minidump rcode = %d\n", err);
 841		}
 842	}
 843
 844	if (adapter->portnum == 0) {
 845		get_brd_name_by_type(adapter->ahw.board_type, brd_name);
 846
 847		pr_info("%s: %s Board S/N %s  Chip rev 0x%x\n",
 848				module_name(THIS_MODULE),
 849				brd_name, serial_num, adapter->ahw.revision_id);
 850	}
 851
 852	if (adapter->fw_version < NETXEN_VERSION_CODE(3, 4, 216)) {
 853		adapter->driver_mismatch = 1;
 854		dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
 855				fw_major, fw_minor, fw_build);
 856		return;
 857	}
 858
 859	if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 860		i = NXRD32(adapter, NETXEN_SRE_MISC);
 861		adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
 862	}
 863
 864	dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
 865			fw_major, fw_minor, fw_build,
 866			adapter->ahw.cut_through ? "cut-through" : "legacy");
 867
 868	if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
 869		adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
 870
 871	if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
 872		adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
 873		adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
 874	} else if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
 875		adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
 876		adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
 877	}
 878
 879	adapter->msix_supported = 0;
 880	if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 881		adapter->msix_supported = !!use_msi_x;
 882		adapter->rss_supported = !!use_msi_x;
 883	} else {
 884		u32 flashed_ver = 0;
 885		netxen_rom_fast_read(adapter,
 886				NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
 887		flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
 888
 889		if (flashed_ver >= NETXEN_VERSION_CODE(3, 4, 336)) {
 890			switch (adapter->ahw.board_type) {
 891			case NETXEN_BRDTYPE_P2_SB31_10G:
 892			case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
 893				adapter->msix_supported = !!use_msi_x;
 894				adapter->rss_supported = !!use_msi_x;
 895				break;
 896			default:
 897				break;
 898			}
 899		}
 900	}
 901
 902	adapter->num_txd = MAX_CMD_DESCRIPTORS;
 903
 904	if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 905		adapter->num_lro_rxd = MAX_LRO_RCV_DESCRIPTORS;
 906		adapter->max_rds_rings = 3;
 907	} else {
 908		adapter->num_lro_rxd = 0;
 909		adapter->max_rds_rings = 2;
 910	}
 911}
 912
 913static int
 914netxen_start_firmware(struct netxen_adapter *adapter)
 915{
 916	int val, err, first_boot;
 917	struct pci_dev *pdev = adapter->pdev;
 918
 919	/* required for NX2031 dummy dma */
 920	err = nx_set_dma_mask(adapter);
 921	if (err)
 922		return err;
 923
 924	err = netxen_can_start_firmware(adapter);
 925
 926	if (err < 0)
 927		return err;
 928
 929	if (!err)
 930		goto wait_init;
 931
 932	first_boot = NXRD32(adapter, NETXEN_CAM_RAM(0x1fc));
 933
 934	err = netxen_check_hw_init(adapter, first_boot);
 935	if (err) {
 936		dev_err(&pdev->dev, "error in init HW init sequence\n");
 937		return err;
 938	}
 939
 940	netxen_request_firmware(adapter);
 941
 942	err = netxen_need_fw_reset(adapter);
 943	if (err < 0)
 944		goto err_out;
 945	if (err == 0)
 946		goto pcie_strap_init;
 947
 948	if (first_boot != 0x55555555) {
 949		NXWR32(adapter, CRB_CMDPEG_STATE, 0);
 950		netxen_pinit_from_rom(adapter);
 951		msleep(1);
 952	}
 953
 954	NXWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
 955	NXWR32(adapter, NETXEN_PEG_HALT_STATUS1, 0);
 956	NXWR32(adapter, NETXEN_PEG_HALT_STATUS2, 0);
 957
 958	if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 959		netxen_set_port_mode(adapter);
 960
 961	err = netxen_load_firmware(adapter);
 962	if (err)
 963		goto err_out;
 964
 965	netxen_release_firmware(adapter);
 966
 967	if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 968
 969		/* Initialize multicast addr pool owners */
 970		val = 0x7654;
 971		if (adapter->ahw.port_type == NETXEN_NIC_XGBE)
 972			val |= 0x0f000000;
 973		NXWR32(adapter, NETXEN_MAC_ADDR_CNTL_REG, val);
 974
 975	}
 976
 977	err = netxen_init_dummy_dma(adapter);
 978	if (err)
 979		goto err_out;
 980
 981	/*
 982	 * Tell the hardware our version number.
 983	 */
 984	val = (_NETXEN_NIC_LINUX_MAJOR << 16)
 985		| ((_NETXEN_NIC_LINUX_MINOR << 8))
 986		| (_NETXEN_NIC_LINUX_SUBVERSION);
 987	NXWR32(adapter, CRB_DRIVER_VERSION, val);
 988
 989pcie_strap_init:
 990	if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 991		netxen_pcie_strap_init(adapter);
 992
 993wait_init:
 994	/* Handshake with the card before we register the devices. */
 995	err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
 996	if (err) {
 997		netxen_free_dummy_dma(adapter);
 998		goto err_out;
 999	}
1000
1001	NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_READY);
1002
1003	nx_update_dma_mask(adapter);
1004
1005	netxen_check_options(adapter);
1006
1007	adapter->need_fw_reset = 0;
1008
1009	/* fall through and release firmware */
1010
1011err_out:
1012	netxen_release_firmware(adapter);
1013	return err;
1014}
1015
1016static int
1017netxen_nic_request_irq(struct netxen_adapter *adapter)
1018{
1019	irq_handler_t handler;
1020	struct nx_host_sds_ring *sds_ring;
1021	int err, ring;
1022
1023	unsigned long flags = 0;
1024	struct net_device *netdev = adapter->netdev;
1025	struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1026
1027	if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
1028		handler = netxen_msix_intr;
1029	else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
1030		handler = netxen_msi_intr;
1031	else {
1032		flags |= IRQF_SHARED;
1033		handler = netxen_intr;
1034	}
1035	adapter->irq = netdev->irq;
1036
1037	for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1038		sds_ring = &recv_ctx->sds_rings[ring];
1039		sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
1040		err = request_irq(sds_ring->irq, handler,
1041				  flags, sds_ring->name, sds_ring);
1042		if (err)
1043			return err;
1044	}
1045
1046	return 0;
1047}
1048
1049static void
1050netxen_nic_free_irq(struct netxen_adapter *adapter)
1051{
1052	int ring;
1053	struct nx_host_sds_ring *sds_ring;
1054
1055	struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1056
1057	for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1058		sds_ring = &recv_ctx->sds_rings[ring];
1059		free_irq(sds_ring->irq, sds_ring);
1060	}
1061}
1062
1063static void
1064netxen_nic_init_coalesce_defaults(struct netxen_adapter *adapter)
1065{
1066	adapter->coal.flags = NETXEN_NIC_INTR_DEFAULT;
1067	adapter->coal.normal.data.rx_time_us =
1068		NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US;
1069	adapter->coal.normal.data.rx_packets =
1070		NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS;
1071	adapter->coal.normal.data.tx_time_us =
1072		NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US;
1073	adapter->coal.normal.data.tx_packets =
1074		NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS;
1075}
1076
1077/* with rtnl_lock */
1078static int
1079__netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1080{
1081	int err;
1082
1083	if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1084		return -EIO;
1085
1086	err = adapter->init_port(adapter, adapter->physical_port);
1087	if (err) {
1088		printk(KERN_ERR "%s: Failed to initialize port %d\n",
1089				netxen_nic_driver_name, adapter->portnum);
1090		return err;
1091	}
1092	if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1093		adapter->macaddr_set(adapter, adapter->mac_addr);
1094
1095	adapter->set_multi(netdev);
1096	adapter->set_mtu(adapter, netdev->mtu);
1097
1098	adapter->ahw.linkup = 0;
1099
1100	if (adapter->max_sds_rings > 1)
1101		netxen_config_rss(adapter, 1);
1102
1103	if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1104		netxen_config_intr_coalesce(adapter);
1105
1106	if (netdev->features & NETIF_F_LRO)
1107		netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
1108
1109	netxen_napi_enable(adapter);
1110
1111	if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1112		netxen_linkevent_request(adapter, 1);
1113	else
1114		netxen_nic_set_link_parameters(adapter);
1115
1116	set_bit(__NX_DEV_UP, &adapter->state);
1117	return 0;
1118}
1119
1120/* Usage: During resume and firmware recovery module.*/
1121
1122static inline int
1123netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
1124{
1125	int err = 0;
1126
1127	rtnl_lock();
1128	if (netif_running(netdev))
1129		err = __netxen_nic_up(adapter, netdev);
1130	rtnl_unlock();
1131
1132	return err;
1133}
1134
1135/* with rtnl_lock */
1136static void
1137__netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1138{
1139	if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1140		return;
1141
1142	if (!test_and_clear_bit(__NX_DEV_UP, &adapter->state))
1143		return;
1144
1145	smp_mb();
1146	spin_lock(&adapter->tx_clean_lock);
1147	netif_carrier_off(netdev);
1148	netif_tx_disable(netdev);
1149
1150	if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
1151		netxen_linkevent_request(adapter, 0);
1152
1153	if (adapter->stop_port)
1154		adapter->stop_port(adapter);
1155
1156	if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1157		netxen_p3_free_mac_list(adapter);
1158
1159	adapter->set_promisc(adapter, NETXEN_NIU_NON_PROMISC_MODE);
1160
1161	netxen_napi_disable(adapter);
1162
1163	netxen_release_tx_buffers(adapter);
1164	spin_unlock(&adapter->tx_clean_lock);
1165}
1166
1167/* Usage: During suspend and firmware recovery module */
1168
1169static inline void
1170netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
1171{
1172	rtnl_lock();
1173	if (netif_running(netdev))
1174		__netxen_nic_down(adapter, netdev);
1175	rtnl_unlock();
1176
1177}
1178
1179static int
1180netxen_nic_attach(struct netxen_adapter *adapter)
1181{
1182	struct net_device *netdev = adapter->netdev;
1183	struct pci_dev *pdev = adapter->pdev;
1184	int err, ring;
1185	struct nx_host_rds_ring *rds_ring;
1186	struct nx_host_tx_ring *tx_ring;
1187	u32 capab2;
1188
1189	if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
1190		return 0;
1191
1192	err = netxen_init_firmware(adapter);
1193	if (err)
1194		return err;
1195
1196	adapter->flags &= ~NETXEN_FW_MSS_CAP;
1197	if (adapter->capabilities & NX_FW_CAPABILITY_MORE_CAPS) {
1198		capab2 = NXRD32(adapter, CRB_FW_CAPABILITIES_2);
1199		if (capab2 & NX_FW_CAPABILITY_2_LRO_MAX_TCP_SEG)
1200			adapter->flags |= NETXEN_FW_MSS_CAP;
1201	}
1202
1203	err = netxen_napi_add(adapter, netdev);
1204	if (err)
1205		return err;
1206
1207	err = netxen_alloc_sw_resources(adapter);
1208	if (err) {
1209		printk(KERN_ERR "%s: Error in setting sw resources\n",
1210				netdev->name);
1211		return err;
1212	}
1213
1214	err = netxen_alloc_hw_resources(adapter);
1215	if (err) {
1216		printk(KERN_ERR "%s: Error in setting hw resources\n",
1217				netdev->name);
1218		goto err_out_free_sw;
1219	}
1220
1221	if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1222		tx_ring = adapter->tx_ring;
1223		tx_ring->crb_cmd_producer = netxen_get_ioaddr(adapter,
1224				crb_cmd_producer[adapter->portnum]);
1225		tx_ring->crb_cmd_consumer = netxen_get_ioaddr(adapter,
1226				crb_cmd_consumer[adapter->portnum]);
1227
1228		tx_ring->producer = 0;
1229		tx_ring->sw_consumer = 0;
1230
1231		netxen_nic_update_cmd_producer(adapter, tx_ring);
1232		netxen_nic_update_cmd_consumer(adapter, tx_ring);
1233	}
1234
1235	for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1236		rds_ring = &adapter->recv_ctx.rds_rings[ring];
1237		netxen_post_rx_buffers(adapter, ring, rds_ring);
1238	}
1239
1240	err = netxen_nic_request_irq(adapter);
1241	if (err) {
1242		dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
1243				netdev->name);
1244		goto err_out_free_rxbuf;
1245	}
1246
1247	if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1248		netxen_nic_init_coalesce_defaults(adapter);
1249
1250	netxen_create_sysfs_entries(adapter);
1251
1252	adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
1253	return 0;
1254
1255err_out_free_rxbuf:
1256	netxen_release_rx_buffers(adapter);
1257	netxen_free_hw_resources(adapter);
1258err_out_free_sw:
1259	netxen_free_sw_resources(adapter);
1260	return err;
1261}
1262
1263static void
1264netxen_nic_detach(struct netxen_adapter *adapter)
1265{
1266	if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
1267		return;
1268
1269	netxen_remove_sysfs_entries(adapter);
1270
1271	netxen_free_hw_resources(adapter);
1272	netxen_release_rx_buffers(adapter);
1273	netxen_nic_free_irq(adapter);
1274	netxen_napi_del(adapter);
1275	netxen_free_sw_resources(adapter);
1276
1277	adapter->is_up = 0;
1278}
1279
1280int
1281netxen_nic_reset_context(struct netxen_adapter *adapter)
1282{
1283	int err = 0;
1284	struct net_device *netdev = adapter->netdev;
1285
1286	if (test_and_set_bit(__NX_RESETTING, &adapter->state))
1287		return -EBUSY;
1288
1289	if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
1290
1291		netif_device_detach(netdev);
1292
1293		if (netif_running(netdev))
1294			__netxen_nic_down(adapter, netdev);
1295
1296		netxen_nic_detach(adapter);
1297
1298		if (netif_running(netdev)) {
1299			err = netxen_nic_attach(adapter);
1300			if (!err)
1301				err = __netxen_nic_up(adapter, netdev);
1302
1303			if (err)
1304				goto done;
1305		}
1306
1307		netif_device_attach(netdev);
1308	}
1309
1310done:
1311	clear_bit(__NX_RESETTING, &adapter->state);
1312	return err;
1313}
1314
1315static int
1316netxen_setup_netdev(struct netxen_adapter *adapter,
1317		struct net_device *netdev)
1318{
1319	int err = 0;
1320	struct pci_dev *pdev = adapter->pdev;
1321
1322	adapter->mc_enabled = 0;
1323	if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1324		adapter->max_mc_count = 38;
1325	else
1326		adapter->max_mc_count = 16;
1327
1328	netdev->netdev_ops	   = &netxen_netdev_ops;
1329	netdev->watchdog_timeo     = 5*HZ;
1330
1331	netxen_nic_change_mtu(netdev, netdev->mtu);
1332
1333	SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
1334
1335	netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
1336	                      NETIF_F_RXCSUM;
1337
1338	if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1339		netdev->hw_features |= NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
1340
1341	netdev->vlan_features |= netdev->hw_features;
1342
1343	if (adapter->pci_using_dac) {
1344		netdev->features |= NETIF_F_HIGHDMA;
1345		netdev->vlan_features |= NETIF_F_HIGHDMA;
1346	}
1347
1348	if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
1349		netdev->hw_features |= NETIF_F_HW_VLAN_TX;
1350
1351	if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
1352		netdev->hw_features |= NETIF_F_LRO;
1353
1354	netdev->features |= netdev->hw_features;
1355
1356	netdev->irq = adapter->msix_entries[0].vector;
1357
1358	INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
1359
1360	if (netxen_read_mac_addr(adapter))
1361		dev_warn(&pdev->dev, "failed to read mac addr\n");
1362
1363	netif_carrier_off(netdev);
1364
1365	err = register_netdev(netdev);
1366	if (err) {
1367		dev_err(&pdev->dev, "failed to register net device\n");
1368		return err;
1369	}
1370
1371	return 0;
1372}
1373
1374#ifdef CONFIG_PCIEAER
1375static void netxen_mask_aer_correctable(struct netxen_adapter *adapter)
1376{
1377	struct pci_dev *pdev = adapter->pdev;
1378	struct pci_dev *root = pdev->bus->self;
1379	u32 aer_pos;
1380
1381	if (adapter->ahw.board_type != NETXEN_BRDTYPE_P3_4_GB_MM &&
1382		adapter->ahw.board_type != NETXEN_BRDTYPE_P3_10G_TP)
1383		return;
1384
1385	if (root->pcie_type != PCI_EXP_TYPE_ROOT_PORT)
1386		return;
1387
1388	aer_pos = pci_find_ext_capability(root, PCI_EXT_CAP_ID_ERR);
1389	if (!aer_pos)
1390		return;
1391
1392	pci_write_config_dword(root, aer_pos + PCI_ERR_COR_MASK, 0xffff);
1393}
1394#endif
1395
1396static int __devinit
1397netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1398{
1399	struct net_device *netdev = NULL;
1400	struct netxen_adapter *adapter = NULL;
1401	int i = 0, err;
1402	int pci_func_id = PCI_FUNC(pdev->devfn);
1403	uint8_t revision_id;
1404	u32 val;
1405
1406	if (pdev->revision >= NX_P3_A0 && pdev->revision <= NX_P3_B1) {
1407		pr_warning("%s: chip revisions between 0x%x-0x%x "
1408				"will not be enabled.\n",
1409				module_name(THIS_MODULE), NX_P3_A0, NX_P3_B1);
1410		return -ENODEV;
1411	}
1412
1413	if ((err = pci_enable_device(pdev)))
1414		return err;
1415
1416	if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1417		err = -ENODEV;
1418		goto err_out_disable_pdev;
1419	}
1420
1421	if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
1422		goto err_out_disable_pdev;
1423
1424	if (NX_IS_REVISION_P3(pdev->revision))
1425		pci_enable_pcie_error_reporting(pdev);
1426
1427	pci_set_master(pdev);
1428
1429	netdev = alloc_etherdev(sizeof(struct netxen_adapter));
1430	if(!netdev) {
1431		err = -ENOMEM;
1432		goto err_out_free_res;
1433	}
1434
1435	SET_NETDEV_DEV(netdev, &pdev->dev);
1436
1437	adapter = netdev_priv(netdev);
1438	adapter->netdev  = netdev;
1439	adapter->pdev    = pdev;
1440	adapter->ahw.pci_func  = pci_func_id;
1441
1442	revision_id = pdev->revision;
1443	adapter->ahw.revision_id = revision_id;
1444
1445	rwlock_init(&adapter->ahw.crb_lock);
1446	spin_lock_init(&adapter->ahw.mem_lock);
1447
1448	spin_lock_init(&adapter->tx_clean_lock);
1449	INIT_LIST_HEAD(&adapter->mac_list);
1450	INIT_LIST_HEAD(&adapter->vlan_ip_list);
1451
1452	err = netxen_setup_pci_map(adapter);
1453	if (err)
1454		goto err_out_free_netdev;
1455
1456	/* This will be reset for mezz cards  */
1457	adapter->portnum = pci_func_id;
1458
1459	err = netxen_nic_get_board_info(adapter);
1460	if (err) {
1461		dev_err(&pdev->dev, "Error getting board config info.\n");
1462		goto err_out_iounmap;
1463	}
1464
1465#ifdef CONFIG_PCIEAER
1466	netxen_mask_aer_correctable(adapter);
1467#endif
1468
1469	/* Mezz cards have PCI function 0,2,3 enabled */
1470	switch (adapter->ahw.board_type) {
1471	case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
1472	case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
1473		if (pci_func_id >= 2)
1474			adapter->portnum = pci_func_id - 2;
1475		break;
1476	default:
1477		break;
1478	}
1479
1480	err = netxen_check_flash_fw_compatibility(adapter);
1481	if (err)
1482		goto err_out_iounmap;
1483
1484	if (adapter->portnum == 0) {
1485		val = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
1486		if (val != 0xffffffff && val != 0) {
1487			NXWR32(adapter, NX_CRB_DEV_REF_COUNT, 0);
1488			adapter->need_fw_reset = 1;
1489		}
1490	}
1491
1492	err = netxen_start_firmware(adapter);
1493	if (err)
1494		goto err_out_decr_ref;
1495
1496	/*
1497	 * See if the firmware gave us a virtual-physical port mapping.
1498	 */
1499	adapter->physical_port = adapter->portnum;
1500	if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1501		i = NXRD32(adapter, CRB_V2P(adapter->portnum));
1502		if (i != 0x55555555)
1503			adapter->physical_port = i;
1504	}
1505
1506	netxen_nic_clear_stats(adapter);
1507
1508	netxen_setup_intr(adapter);
1509
1510	err = netxen_setup_netdev(adapter, netdev);
1511	if (err)
1512		goto err_out_disable_msi;
1513
1514	pci_set_drvdata(pdev, adapter);
1515
1516	netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1517
1518	switch (adapter->ahw.port_type) {
1519	case NETXEN_NIC_GBE:
1520		dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1521				adapter->netdev->name);
1522		break;
1523	case NETXEN_NIC_XGBE:
1524		dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1525				adapter->netdev->name);
1526		break;
1527	}
1528
1529	netxen_create_diag_entries(adapter);
1530
1531	return 0;
1532
1533err_out_disable_msi:
1534	netxen_teardown_intr(adapter);
1535
1536	netxen_free_dummy_dma(adapter);
1537
1538err_out_decr_ref:
1539	nx_decr_dev_ref_cnt(adapter);
1540
1541err_out_iounmap:
1542	netxen_cleanup_pci_map(adapter);
1543
1544err_out_free_netdev:
1545	free_netdev(netdev);
1546
1547err_out_free_res:
1548	pci_release_regions(pdev);
1549
1550err_out_disable_pdev:
1551	pci_set_drvdata(pdev, NULL);
1552	pci_disable_device(pdev);
1553	return err;
1554}
1555
1556static
1557void netxen_cleanup_minidump(struct netxen_adapter *adapter)
1558{
1559	kfree(adapter->mdump.md_template);
1560	adapter->mdump.md_template = NULL;
1561
1562	if (adapter->mdump.md_capture_buff) {
1563		vfree(adapter->mdump.md_capture_buff);
1564		adapter->mdump.md_capture_buff = NULL;
1565	}
1566}
1567
1568static void __devexit netxen_nic_remove(struct pci_dev *pdev)
1569{
1570	struct netxen_adapter *adapter;
1571	struct net_device *netdev;
1572
1573	adapter = pci_get_drvdata(pdev);
1574	if (adapter == NULL)
1575		return;
1576
1577	netdev = adapter->netdev;
1578
1579	netxen_cancel_fw_work(adapter);
1580
1581	unregister_netdev(netdev);
1582
1583	cancel_work_sync(&adapter->tx_timeout_task);
1584
1585	netxen_free_vlan_ip_list(adapter);
1586	netxen_nic_detach(adapter);
1587
1588	nx_decr_dev_ref_cnt(adapter);
1589
1590	if (adapter->portnum == 0)
1591		netxen_free_dummy_dma(adapter);
1592
1593	clear_bit(__NX_RESETTING, &adapter->state);
1594
1595	netxen_teardown_intr(adapter);
1596
1597	netxen_remove_diag_entries(adapter);
1598
1599	netxen_cleanup_pci_map(adapter);
1600
1601	netxen_release_firmware(adapter);
1602
1603	if (NX_IS_REVISION_P3(pdev->revision)) {
1604		netxen_cleanup_minidump(adapter);
1605		pci_disable_pcie_error_reporting(pdev);
1606	}
1607
1608	pci_release_regions(pdev);
1609	pci_disable_device(pdev);
1610	pci_set_drvdata(pdev, NULL);
1611
1612	free_netdev(netdev);
1613}
1614
1615static void netxen_nic_detach_func(struct netxen_adapter *adapter)
1616{
1617	struct net_device *netdev = adapter->netdev;
1618
1619	netif_device_detach(netdev);
1620
1621	netxen_cancel_fw_work(adapter);
1622
1623	if (netif_running(netdev))
1624		netxen_nic_down(adapter, netdev);
1625
1626	cancel_work_sync(&adapter->tx_timeout_task);
1627
1628	netxen_nic_detach(adapter);
1629
1630	if (adapter->portnum == 0)
1631		netxen_free_dummy_dma(adapter);
1632
1633	nx_decr_dev_ref_cnt(adapter);
1634
1635	clear_bit(__NX_RESETTING, &adapter->state);
1636}
1637
1638static int netxen_nic_attach_func(struct pci_dev *pdev)
1639{
1640	struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1641	struct net_device *netdev = adapter->netdev;
1642	int err;
1643
1644	err = pci_enable_device(pdev);
1645	if (err)
1646		return err;
1647
1648	pci_set_power_state(pdev, PCI_D0);
1649	pci_set_master(pdev);
1650	pci_restore_state(pdev);
1651
1652	adapter->ahw.crb_win = -1;
1653	adapter->ahw.ocm_win = -1;
1654
1655	err = netxen_start_firmware(adapter);
1656	if (err) {
1657		dev_err(&pdev->dev, "failed to start firmware\n");
1658		return err;
1659	}
1660
1661	if (netif_running(netdev)) {
1662		err = netxen_nic_attach(adapter);
1663		if (err)
1664			goto err_out;
1665
1666		err = netxen_nic_up(adapter, netdev);
1667		if (err)
1668			goto err_out_detach;
1669
1670		netxen_restore_indev_addr(netdev, NETDEV_UP);
1671	}
1672
1673	netif_device_attach(netdev);
1674	netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
1675	return 0;
1676
1677err_out_detach:
1678	netxen_nic_detach(adapter);
1679err_out:
1680	nx_decr_dev_ref_cnt(adapter);
1681	return err;
1682}
1683
1684static pci_ers_result_t netxen_io_error_detected(struct pci_dev *pdev,
1685						pci_channel_state_t state)
1686{
1687	struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1688
1689	if (state == pci_channel_io_perm_failure)
1690		return PCI_ERS_RESULT_DISCONNECT;
1691
1692	if (nx_dev_request_aer(adapter))
1693		return PCI_ERS_RESULT_RECOVERED;
1694
1695	netxen_nic_detach_func(adapter);
1696
1697	pci_disable_device(pdev);
1698
1699	return PCI_ERS_RESULT_NEED_RESET;
1700}
1701
1702static pci_ers_result_t netxen_io_slot_reset(struct pci_dev *pdev)
1703{
1704	int err = 0;
1705
1706	err = netxen_nic_attach_func(pdev);
1707
1708	return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
1709}
1710
1711static void netxen_io_resume(struct pci_dev *pdev)
1712{
1713	pci_cleanup_aer_uncorrect_error_status(pdev);
1714}
1715
1716static void netxen_nic_shutdown(struct pci_dev *pdev)
1717{
1718	struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1719
1720	netxen_nic_detach_func(adapter);
1721
1722	if (pci_save_state(pdev))
1723		return;
1724
1725	if (netxen_nic_wol_supported(adapter)) {
1726		pci_enable_wake(pdev, PCI_D3cold, 1);
1727		pci_enable_wake(pdev, PCI_D3hot, 1);
1728	}
1729
1730	pci_disable_device(pdev);
1731}
1732
1733#ifdef CONFIG_PM
1734static int
1735netxen_nic_suspend(struct pci_dev *pdev, pm_message_t state)
1736{
1737	struct netxen_adapter *adapter = pci_get_drvdata(pdev);
1738	int retval;
1739
1740	netxen_nic_detach_func(adapter);
1741
1742	retval = pci_save_state(pdev);
1743	if (retval)
1744		return retval;
1745
1746	if (netxen_nic_wol_supported(adapter)) {
1747		pci_enable_wake(pdev, PCI_D3cold, 1);
1748		pci_enable_wake(pdev, PCI_D3hot, 1);
1749	}
1750
1751	pci_disable_device(pdev);
1752	pci_set_power_state(pdev, pci_choose_state(pdev, state));
1753
1754	return 0;
1755}
1756
1757static int
1758netxen_nic_resume(struct pci_dev *pdev)
1759{
1760	return netxen_nic_attach_func(pdev);
1761}
1762#endif
1763
1764static int netxen_nic_open(struct net_device *netdev)
1765{
1766	struct netxen_adapter *adapter = netdev_priv(netdev);
1767	int err = 0;
1768
1769	if (adapter->driver_mismatch)
1770		return -EIO;
1771
1772	err = netxen_nic_attach(adapter);
1773	if (err)
1774		return err;
1775
1776	err = __netxen_nic_up(adapter, netdev);
1777	if (err)
1778		goto err_out;
1779
1780	netif_start_queue(netdev);
1781
1782	return 0;
1783
1784err_out:
1785	netxen_nic_detach(adapter);
1786	return err;
1787}
1788
1789/*
1790 * netxen_nic_close - Disables a network interface entry point
1791 */
1792static int netxen_nic_close(struct net_device *netdev)
1793{
1794	struct netxen_adapter *adapter = netdev_priv(netdev);
1795
1796	__netxen_nic_down(adapter, netdev);
1797	return 0;
1798}
1799
1800static void
1801netxen_tso_check(struct net_device *netdev,
1802		struct nx_host_tx_ring *tx_ring,
1803		struct cmd_desc_type0 *first_desc,
1804		struct sk_buff *skb)
1805{
1806	u8 opcode = TX_ETHER_PKT;
1807	__be16 protocol = skb->protocol;
1808	u16 flags = 0, vid = 0;
1809	u32 producer;
1810	int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1811	struct cmd_desc_type0 *hwdesc;
1812	struct vlan_ethhdr *vh;
1813
1814	if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1815
1816		vh = (struct vlan_ethhdr *)skb->data;
1817		protocol = vh->h_vlan_encapsulated_proto;
1818		flags = FLAGS_VLAN_TAGGED;
1819
1820	} else if (vlan_tx_tag_present(skb)) {
1821		flags = FLAGS_VLAN_OOB;
1822		vid = vlan_tx_tag_get(skb);
1823		netxen_set_tx_vlan_tci(first_desc, vid);
1824		vlan_oob = 1;
1825	}
1826
1827	if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1828			skb_shinfo(skb)->gso_size > 0) {
1829
1830		hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1831
1832		first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1833		first_desc->total_hdr_length = hdr_len;
1834		if (vlan_oob) {
1835			first_desc->total_hdr_length += VLAN_HLEN;
1836			first_desc->tcp_hdr_offset = VLAN_HLEN;
1837			first_desc->ip_hdr_offset = VLAN_HLEN;
1838			/* Only in case of TSO on vlan device */
1839			flags |= FLAGS_VLAN_TAGGED;
1840		}
1841
1842		opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1843				TX_TCP_LSO6 : TX_TCP_LSO;
1844		tso = 1;
1845
1846	} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1847		u8 l4proto;
1848
1849		if (protocol == cpu_to_be16(ETH_P_IP)) {
1850			l4proto = ip_hdr(skb)->protocol;
1851
1852			if (l4proto == IPPROTO_TCP)
1853				opcode = TX_TCP_PKT;
1854			else if(l4proto == IPPROTO_UDP)
1855				opcode = TX_UDP_PKT;
1856		} else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1857			l4proto = ipv6_hdr(skb)->nexthdr;
1858
1859			if (l4proto == IPPROTO_TCP)
1860				opcode = TX_TCPV6_PKT;
1861			else if(l4proto == IPPROTO_UDP)
1862				opcode = TX_UDPV6_PKT;
1863		}
1864	}
1865
1866	first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1867	first_desc->ip_hdr_offset += skb_network_offset(skb);
1868	netxen_set_tx_flags_opcode(first_desc, flags, opcode);
1869
1870	if (!tso)
1871		return;
1872
1873	/* For LSO, we need to copy the MAC/IP/TCP headers into
1874	 * the descriptor ring
1875	 */
1876	producer = tx_ring->producer;
1877	copied = 0;
1878	offset = 2;
1879
1880	if (vlan_oob) {
1881		/* Create a TSO vlan header template for firmware */
1882
1883		hwdesc = &tx_ring->desc_head[producer];
1884		tx_ring->cmd_buf_arr[producer].skb = NULL;
1885
1886		copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1887				hdr_len + VLAN_HLEN);
1888
1889		vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1890		skb_copy_from_linear_data(skb, vh, 12);
1891		vh->h_vlan_proto = htons(ETH_P_8021Q);
1892		vh->h_vlan_TCI = htons(vid);
1893		skb_copy_from_linear_data_offset(skb, 12,
1894				(char *)vh + 16, copy_len - 16);
1895
1896		copied = copy_len - VLAN_HLEN;
1897		offset = 0;
1898
1899		producer = get_next_index(producer, tx_ring->num_desc);
1900	}
1901
1902	while (copied < hdr_len) {
1903
1904		copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1905				(hdr_len - copied));
1906
1907		hwdesc = &tx_ring->desc_head[producer];
1908		tx_ring->cmd_buf_arr[producer].skb = NULL;
1909
1910		skb_copy_from_linear_data_offset(skb, copied,
1911				 (char *)hwdesc + offset, copy_len);
1912
1913		copied += copy_len;
1914		offset = 0;
1915
1916		producer = get_next_index(producer, tx_ring->num_desc);
1917	}
1918
1919	tx_ring->producer = producer;
1920	barrier();
1921}
1922
1923static int
1924netxen_map_tx_skb(struct pci_dev *pdev,
1925		struct sk_buff *skb, struct netxen_cmd_buffer *pbuf)
1926{
1927	struct netxen_skb_frag *nf;
1928	struct skb_frag_struct *frag;
1929	int i, nr_frags;
1930	dma_addr_t map;
1931
1932	nr_frags = skb_shinfo(skb)->nr_frags;
1933	nf = &pbuf->frag_array[0];
1934
1935	map = pci_map_single(pdev, skb->data,
1936			skb_headlen(skb), PCI_DMA_TODEVICE);
1937	if (pci_dma_mapping_error(pdev, map))
1938		goto out_err;
1939
1940	nf->dma = map;
1941	nf->length = skb_headlen(skb);
1942
1943	for (i = 0; i < nr_frags; i++) {
1944		frag = &skb_shinfo(skb)->frags[i];
1945		nf = &pbuf->frag_array[i+1];
1946
1947		map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag),
1948				       DMA_TO_DEVICE);
1949		if (dma_mapping_error(&pdev->dev, map))
1950			goto unwind;
1951
1952		nf->dma = map;
1953		nf->length = skb_frag_size(frag);
1954	}
1955
1956	return 0;
1957
1958unwind:
1959	while (--i >= 0) {
1960		nf = &pbuf->frag_array[i+1];
1961		pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1962	}
1963
1964	nf = &pbuf->frag_array[0];
1965	pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1966
1967out_err:
1968	return -ENOMEM;
1969}
1970
1971static inline void
1972netxen_clear_cmddesc(u64 *desc)
1973{
1974	desc[0] = 0ULL;
1975	desc[2] = 0ULL;
1976}
1977
1978static netdev_tx_t
1979netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1980{
1981	struct netxen_adapter *adapter = netdev_priv(netdev);
1982	struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1983	struct netxen_cmd_buffer *pbuf;
1984	struct netxen_skb_frag *buffrag;
1985	struct cmd_desc_type0 *hwdesc, *first_desc;
1986	struct pci_dev *pdev;
1987	int i, k;
1988	int delta = 0;
1989	struct skb_frag_struct *frag;
1990
1991	u32 producer;
1992	int frag_count, no_of_desc;
1993	u32 num_txd = tx_ring->num_desc;
1994
1995	frag_count = skb_shinfo(skb)->nr_frags + 1;
1996
1997	/* 14 frags supported for normal packet and
1998	 * 32 frags supported for TSO packet
1999	 */
2000	if (!skb_is_gso(skb) && frag_count > NETXEN_MAX_FRAGS_PER_TX) {
2001
2002		for (i = 0; i < (frag_count - NETXEN_MAX_FRAGS_PER_TX); i++) {
2003			frag = &skb_shinfo(skb)->frags[i];
2004			delta += skb_frag_size(frag);
2005		}
2006
2007		if (!__pskb_pull_tail(skb, delta))
2008			goto drop_packet;
2009
2010		frag_count = 1 + skb_shinfo(skb)->nr_frags;
2011	}
2012	/* 4 fragments per cmd des */
2013	no_of_desc = (frag_count + 3) >> 2;
2014
2015	if (unlikely(netxen_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
2016		netif_stop_queue(netdev);
2017		smp_mb();
2018		if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
2019			netif_start_queue(netdev);
2020		else
2021			return NETDEV_TX_BUSY;
2022	}
2023
2024	producer = tx_ring->producer;
2025	pbuf = &tx_ring->cmd_buf_arr[producer];
2026
2027	pdev = adapter->pdev;
2028
2029	if (netxen_map_tx_skb(pdev, skb, pbuf))
2030		goto drop_packet;
2031
2032	pbuf->skb = skb;
2033	pbuf->frag_count = frag_count;
2034
2035	first_desc = hwdesc = &tx_ring->desc_head[producer];
2036	netxen_clear_cmddesc((u64 *)hwdesc);
2037
2038	netxen_set_tx_frags_len(first_desc, frag_count, skb->len);
2039	netxen_set_tx_port(first_desc, adapter->portnum);
2040
2041	for (i = 0; i < frag_count; i++) {
2042
2043		k = i % 4;
2044
2045		if ((k == 0) && (i > 0)) {
2046			/* move to next desc.*/
2047			producer = get_next_index(producer, num_txd);
2048			hwdesc = &tx_ring->desc_head[producer];
2049			netxen_clear_cmddesc((u64 *)hwdesc);
2050			tx_ring->cmd_buf_arr[producer].skb = NULL;
2051		}
2052
2053		buffrag = &pbuf->frag_array[i];
2054
2055		hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
2056		switch (k) {
2057		case 0:
2058			hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
2059			break;
2060		case 1:
2061			hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
2062			break;
2063		case 2:
2064			hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
2065			break;
2066		case 3:
2067			hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
2068			break;
2069		}
2070	}
2071
2072	tx_ring->producer = get_next_index(producer, num_txd);
2073
2074	netxen_tso_check(netdev, tx_ring, first_desc, skb);
2075
2076	adapter->stats.txbytes += skb->len;
2077	adapter->stats.xmitcalled++;
2078
2079	netxen_nic_update_cmd_producer(adapter, tx_ring);
2080
2081	return NETDEV_TX_OK;
2082
2083drop_packet:
2084	adapter->stats.txdropped++;
2085	dev_kfree_skb_any(skb);
2086	return NETDEV_TX_OK;
2087}
2088
2089static int netxen_nic_check_temp(struct netxen_adapter *adapter)
2090{
2091	struct net_device *netdev = adapter->netdev;
2092	uint32_t temp, temp_state, temp_val;
2093	int rv = 0;
2094
2095	temp = NXRD32(adapter, CRB_TEMP_STATE);
2096
2097	temp_state = nx_get_temp_state(temp);
2098	temp_val = nx_get_temp_val(temp);
2099
2100	if (temp_state == NX_TEMP_PANIC) {
2101		printk(KERN_ALERT
2102		       "%s: Device temperature %d degrees C exceeds"
2103		       " maximum allowed. Hardware has been shut down.\n",
2104		       netdev->name, temp_val);
2105		rv = 1;
2106	} else if (temp_state == NX_TEMP_WARN) {
2107		if (adapter->temp == NX_TEMP_NORMAL) {
2108			printk(KERN_ALERT
2109			       "%s: Device temperature %d degrees C "
2110			       "exceeds operating range."
2111			       " Immediate action needed.\n",
2112			       netdev->name, temp_val);
2113		}
2114	} else {
2115		if (adapter->temp == NX_TEMP_WARN) {
2116			printk(KERN_INFO
2117			       "%s: Device temperature is now %d degrees C"
2118			       " in normal range.\n", netdev->name,
2119			       temp_val);
2120		}
2121	}
2122	adapter->temp = temp_state;
2123	return rv;
2124}
2125
2126void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
2127{
2128	struct net_device *netdev = adapter->netdev;
2129
2130	if (adapter->ahw.linkup && !linkup) {
2131		printk(KERN_INFO "%s: %s NIC Link is down\n",
2132		       netxen_nic_driver_name, netdev->name);
2133		adapter->ahw.linkup = 0;
2134		if (netif_running(netdev)) {
2135			netif_carrier_off(netdev);
2136			netif_stop_queue(netdev);
2137		}
2138		adapter->link_changed = !adapter->has_link_events;
2139	} else if (!adapter->ahw.linkup && linkup) {
2140		printk(KERN_INFO "%s: %s NIC Link is up\n",
2141		       netxen_nic_driver_name, netdev->name);
2142		adapter->ahw.linkup = 1;
2143		if (netif_running(netdev)) {
2144			netif_carrier_on(netdev);
2145			netif_wake_queue(netdev);
2146		}
2147		adapter->link_changed = !adapter->has_link_events;
2148	}
2149}
2150
2151static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
2152{
2153	u32 val, port, linkup;
2154
2155	port = adapter->physical_port;
2156
2157	if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2158		val = NXRD32(adapter, CRB_XG_STATE_P3);
2159		val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
2160		linkup = (val == XG_LINK_UP_P3);
2161	} else {
2162		val = NXRD32(adapter, CRB_XG_STATE);
2163		val = (val >> port*8) & 0xff;
2164		linkup = (val == XG_LINK_UP);
2165	}
2166
2167	netxen_advert_link_change(adapter, linkup);
2168}
2169
2170static void netxen_tx_timeout(struct net_device *netdev)
2171{
2172	struct netxen_adapter *adapter = netdev_priv(netdev);
2173
2174	if (test_bit(__NX_RESETTING, &adapter->state))
2175		return;
2176
2177	dev_err(&netdev->dev, "transmit timeout, resetting.\n");
2178	schedule_work(&adapter->tx_timeout_task);
2179}
2180
2181static void netxen_tx_timeout_task(struct work_struct *work)
2182{
2183	struct netxen_adapter *adapter =
2184		container_of(work, struct netxen_adapter, tx_timeout_task);
2185
2186	if (!netif_running(adapter->netdev))
2187		return;
2188
2189	if (test_and_set_bit(__NX_RESETTING, &adapter->state))
2190		return;
2191
2192	if (++adapter->tx_timeo_cnt >= NX_MAX_TX_TIMEOUTS)
2193		goto request_reset;
2194
2195	rtnl_lock();
2196	if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
2197		/* try to scrub interrupt */
2198		netxen_napi_disable(adapter);
2199
2200		netxen_napi_enable(adapter);
2201
2202		netif_wake_queue(adapter->netdev);
2203
2204		clear_bit(__NX_RESETTING, &adapter->state);
2205	} else {
2206		clear_bit(__NX_RESETTING, &adapter->state);
2207		if (netxen_nic_reset_context(adapter)) {
2208			rtnl_unlock();
2209			goto request_reset;
2210		}
2211	}
2212	adapter->netdev->trans_start = jiffies;
2213	rtnl_unlock();
2214	return;
2215
2216request_reset:
2217	adapter->need_fw_reset = 1;
2218	clear_bit(__NX_RESETTING, &adapter->state);
2219}
2220
2221static struct rtnl_link_stats64 *netxen_nic_get_stats(struct net_device *netdev,
2222						      struct rtnl_link_stats64 *stats)
2223{
2224	struct netxen_adapter *adapter = netdev_priv(netdev);
2225
2226	stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
2227	stats->tx_packets = adapter->stats.xmitfinished;
2228	stats->rx_bytes = adapter->stats.rxbytes;
2229	stats->tx_bytes = adapter->stats.txbytes;
2230	stats->rx_dropped = adapter->stats.rxdropped;
2231	stats->tx_dropped = adapter->stats.txdropped;
2232
2233	return stats;
2234}
2235
2236static irqreturn_t netxen_intr(int irq, void *data)
2237{
2238	struct nx_host_sds_ring *sds_ring = data;
2239	struct netxen_adapter *adapter = sds_ring->adapter;
2240	u32 status = 0;
2241
2242	status = readl(adapter->isr_int_vec);
2243
2244	if (!(status & adapter->int_vec_bit))
2245		return IRQ_NONE;
2246
2247	if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
2248		/* check interrupt state machine, to be sure */
2249		status = readl(adapter->crb_int_state_reg);
2250		if (!ISR_LEGACY_INT_TRIGGERED(status))
2251			return IRQ_NONE;
2252
2253	} else {
2254		unsigned long our_int = 0;
2255
2256		our_int = readl(adapter->crb_int_state_reg);
2257
2258		/* not our interrupt */
2259		if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
2260			return IRQ_NONE;
2261
2262		/* claim interrupt */
2263		writel((our_int & 0xffffffff), adapter->crb_int_state_reg);
2264
2265		/* clear interrupt */
2266		netxen_nic_disable_int(sds_ring);
2267	}
2268
2269	writel(0xffffffff, adapter->tgt_status_reg);
2270	/* read twice to ensure write is flushed */
2271	readl(adapter->isr_int_vec);
2272	readl(adapter->isr_int_vec);
2273
2274	napi_schedule(&sds_ring->napi);
2275
2276	return IRQ_HANDLED;
2277}
2278
2279static irqreturn_t netxen_msi_intr(int irq, void *data)
2280{
2281	struct nx_host_sds_ring *sds_ring = data;
2282	struct netxen_adapter *adapter = sds_ring->adapter;
2283
2284	/* clear interrupt */
2285	writel(0xffffffff, adapter->tgt_status_reg);
2286
2287	napi_schedule(&sds_ring->napi);
2288	return IRQ_HANDLED;
2289}
2290
2291static irqreturn_t netxen_msix_intr(int irq, void *data)
2292{
2293	struct nx_host_sds_ring *sds_ring = data;
2294
2295	napi_schedule(&sds_ring->napi);
2296	return IRQ_HANDLED;
2297}
2298
2299static int netxen_nic_poll(struct napi_struct *napi, int budget)
2300{
2301	struct nx_host_sds_ring *sds_ring =
2302		container_of(napi, struct nx_host_sds_ring, napi);
2303
2304	struct netxen_adapter *adapter = sds_ring->adapter;
2305
2306	int tx_complete;
2307	int work_done;
2308
2309	tx_complete = netxen_process_cmd_ring(adapter);
2310
2311	work_done = netxen_process_rcv_ring(sds_ring, budget);
2312
2313	if ((work_done < budget) && tx_complete) {
2314		napi_complete(&sds_ring->napi);
2315		if (test_bit(__NX_DEV_UP, &adapter->state))
2316			netxen_nic_enable_int(sds_ring);
2317	}
2318
2319	return work_done;
2320}
2321
2322#ifdef CONFIG_NET_POLL_CONTROLLER
2323static void netxen_nic_poll_controller(struct net_device *netdev)
2324{
2325	int ring;
2326	struct nx_host_sds_ring *sds_ring;
2327	struct netxen_adapter *adapter = netdev_priv(netdev);
2328	struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
2329
2330	disable_irq(adapter->irq);
2331	for (ring = 0; ring < adapter->max_sds_rings; ring++) {
2332		sds_ring = &recv_ctx->sds_rings[ring];
2333		netxen_intr(adapter->irq, sds_ring);
2334	}
2335	enable_irq(adapter->irq);
2336}
2337#endif
2338
2339static int
2340nx_incr_dev_ref_cnt(struct netxen_adapter *adapter)
2341{
2342	int count;
2343	if (netxen_api_lock(adapter))
2344		return -EIO;
2345
2346	count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2347
2348	NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2349
2350	netxen_api_unlock(adapter);
2351	return count;
2352}
2353
2354static int
2355nx_decr_dev_ref_cnt(struct netxen_adapter *adapter)
2356{
2357	int count, state;
2358	if (netxen_api_lock(adapter))
2359		return -EIO;
2360
2361	count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2362	WARN_ON(count == 0);
2363
2364	NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2365	state = NXRD32(adapter, NX_CRB_DEV_STATE);
2366
2367	if (count == 0 && state != NX_DEV_FAILED)
2368		NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2369
2370	netxen_api_unlock(adapter);
2371	return count;
2372}
2373
2374static int
2375nx_dev_request_aer(struct netxen_adapter *adapter)
2376{
2377	u32 state;
2378	int ret = -EINVAL;
2379
2380	if (netxen_api_lock(adapter))
2381		return ret;
2382
2383	state = NXRD32(adapter, NX_CRB_DEV_STATE);
2384
2385	if (state == NX_DEV_NEED_AER)
2386		ret = 0;
2387	else if (state == NX_DEV_READY) {
2388		NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_AER);
2389		ret = 0;
2390	}
2391
2392	netxen_api_unlock(adapter);
2393	return ret;
2394}
2395
2396int
2397nx_dev_request_reset(struct netxen_adapter *adapter)
2398{
2399	u32 state;
2400	int ret = -EINVAL;
2401
2402	if (netxen_api_lock(adapter))
2403		return ret;
2404
2405	state = NXRD32(adapter, NX_CRB_DEV_STATE);
2406
2407	if (state == NX_DEV_NEED_RESET || state == NX_DEV_FAILED)
2408		ret = 0;
2409	else if (state != NX_DEV_INITALIZING && state != NX_DEV_NEED_AER) {
2410		NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_NEED_RESET);
2411		adapter->flags |= NETXEN_FW_RESET_OWNER;
2412		ret = 0;
2413	}
2414
2415	netxen_api_unlock(adapter);
2416
2417	return ret;
2418}
2419
2420static int
2421netxen_can_start_firmware(struct netxen_adapter *adapter)
2422{
2423	int count;
2424	int can_start = 0;
2425
2426	if (netxen_api_lock(adapter)) {
2427		nx_incr_dev_ref_cnt(adapter);
2428		return -1;
2429	}
2430
2431	count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2432
2433	if ((count < 0) || (count >= NX_MAX_PCI_FUNC))
2434		count = 0;
2435
2436	if (count == 0) {
2437		can_start = 1;
2438		NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_INITALIZING);
2439	}
2440
2441	NXWR32(adapter, NX_CRB_DEV_REF_COUNT, ++count);
2442
2443	netxen_api_unlock(adapter);
2444
2445	return can_start;
2446}
2447
2448static void
2449netxen_schedule_work(struct netxen_adapter *adapter,
2450		work_func_t func, int delay)
2451{
2452	INIT_DELAYED_WORK(&adapter->fw_work, func);
2453	schedule_delayed_work(&adapter->fw_work, delay);
2454}
2455
2456static void
2457netxen_cancel_fw_work(struct netxen_adapter *adapter)
2458{
2459	while (test_and_set_bit(__NX_RESETTING, &adapter->state))
2460		msleep(10);
2461
2462	cancel_delayed_work_sync(&adapter->fw_work);
2463}
2464
2465static void
2466netxen_attach_work(struct work_struct *work)
2467{
2468	struct netxen_adapter *adapter = container_of(work,
2469				struct netxen_adapter, fw_work.work);
2470	struct net_device *netdev = adapter->netdev;
2471	int err = 0;
2472
2473	if (netif_running(netdev)) {
2474		err = netxen_nic_attach(adapter);
2475		if (err)
2476			goto done;
2477
2478		err = netxen_nic_up(adapter, netdev);
2479		if (err) {
2480			netxen_nic_detach(adapter);
2481			goto done;
2482		}
2483
2484		netxen_restore_indev_addr(netdev, NETDEV_UP);
2485	}
2486
2487	netif_device_attach(netdev);
2488
2489done:
2490	adapter->fw_fail_cnt = 0;
2491	clear_bit(__NX_RESETTING, &adapter->state);
2492	netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2493}
2494
2495static void
2496netxen_fwinit_work(struct work_struct *work)
2497{
2498	struct netxen_adapter *adapter = container_of(work,
2499				struct netxen_adapter, fw_work.work);
2500	int dev_state;
2501	int count;
2502	dev_state = NXRD32(adapter, NX_CRB_DEV_STATE);
2503	if (adapter->flags & NETXEN_FW_RESET_OWNER) {
2504		count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2505		WARN_ON(count == 0);
2506		if (count == 1) {
2507			if (adapter->mdump.md_enabled) {
2508				rtnl_lock();
2509				netxen_dump_fw(adapter);
2510				rtnl_unlock();
2511			}
2512			adapter->flags &= ~NETXEN_FW_RESET_OWNER;
2513			if (netxen_api_lock(adapter)) {
2514				clear_bit(__NX_RESETTING, &adapter->state);
2515				NXWR32(adapter, NX_CRB_DEV_STATE,
2516						NX_DEV_FAILED);
2517				return;
2518			}
2519			count = NXRD32(adapter, NX_CRB_DEV_REF_COUNT);
2520			NXWR32(adapter, NX_CRB_DEV_REF_COUNT, --count);
2521			NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_COLD);
2522			dev_state = NX_DEV_COLD;
2523			netxen_api_unlock(adapter);
2524		}
2525	}
2526
2527	switch (dev_state) {
2528	case NX_DEV_COLD:
2529	case NX_DEV_READY:
2530		if (!netxen_start_firmware(adapter)) {
2531			netxen_schedule_work(adapter, netxen_attach_work, 0);
2532			return;
2533		}
2534		break;
2535
2536	case NX_DEV_NEED_RESET:
2537	case NX_DEV_INITALIZING:
2538			netxen_schedule_work(adapter,
2539					netxen_fwinit_work, 2 * FW_POLL_DELAY);
2540			return;
2541
2542	case NX_DEV_FAILED:
2543	default:
2544		nx_incr_dev_ref_cnt(adapter);
2545		break;
2546	}
2547
2548	if (netxen_api_lock(adapter)) {
2549		clear_bit(__NX_RESETTING, &adapter->state);
2550		return;
2551	}
2552	NXWR32(adapter, NX_CRB_DEV_STATE, NX_DEV_FAILED);
2553	netxen_api_unlock(adapter);
2554	dev_err(&adapter->pdev->dev, "%s: Device initialization Failed\n",
2555				adapter->netdev->name);
2556
2557	clear_bit(__NX_RESETTING, &adapter->state);
2558}
2559
2560static void
2561netxen_detach_work(struct work_struct *work)
2562{
2563	struct netxen_adapter *adapter = container_of(work,
2564				struct netxen_adapter, fw_work.work);
2565	struct net_device *netdev = adapter->netdev;
2566	int ref_cnt = 0, delay;
2567	u32 status;
2568
2569	netif_device_detach(netdev);
2570
2571	netxen_nic_down(adapter, netdev);
2572
2573	rtnl_lock();
2574	netxen_nic_detach(adapter);
2575	rtnl_unlock();
2576
2577	status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2578
2579	if (status & NX_RCODE_FATAL_ERROR)
2580		goto err_ret;
2581
2582	if (adapter->temp == NX_TEMP_PANIC)
2583		goto err_ret;
2584
2585	if (!(adapter->flags & NETXEN_FW_RESET_OWNER))
2586		ref_cnt = nx_decr_dev_ref_cnt(adapter);
2587
2588	if (ref_cnt == -EIO)
2589		goto err_ret;
2590
2591	delay = (ref_cnt == 0) ? 0 : (2 * FW_POLL_DELAY);
2592
2593	adapter->fw_wait_cnt = 0;
2594	netxen_schedule_work(adapter, netxen_fwinit_work, delay);
2595
2596	return;
2597
2598err_ret:
2599	clear_bit(__NX_RESETTING, &adapter->state);
2600}
2601
2602static int
2603netxen_check_health(struct netxen_adapter *adapter)
2604{
2605	u32 state, heartbit;
2606	u32 peg_status;
2607	struct net_device *netdev = adapter->netdev;
2608
2609	state = NXRD32(adapter, NX_CRB_DEV_STATE);
2610	if (state == NX_DEV_NEED_AER)
2611		return 0;
2612
2613	if (netxen_nic_check_temp(adapter))
2614		goto detach;
2615
2616	if (adapter->need_fw_reset) {
2617		if (nx_dev_request_reset(adapter))
2618			return 0;
2619		goto detach;
2620	}
2621
2622	/* NX_DEV_NEED_RESET, this state can be marked in two cases
2623	 * 1. Tx timeout 2. Fw hang
2624	 * Send request to destroy context in case of tx timeout only
2625	 * and doesn't required in case of Fw hang
2626	 */
2627	if (state == NX_DEV_NEED_RESET || state == NX_DEV_FAILED) {
2628		adapter->need_fw_reset = 1;
2629		if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2630			goto detach;
2631	}
2632
2633	if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2634		return 0;
2635
2636	heartbit = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
2637	if (heartbit != adapter->heartbit) {
2638		adapter->heartbit = heartbit;
2639		adapter->fw_fail_cnt = 0;
2640		if (adapter->need_fw_reset)
2641			goto detach;
2642		return 0;
2643	}
2644
2645	if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2646		return 0;
2647
2648	if (nx_dev_request_reset(adapter))
2649		return 0;
2650
2651	clear_bit(__NX_FW_ATTACHED, &adapter->state);
2652
2653	dev_err(&netdev->dev, "firmware hang detected\n");
2654	peg_status = NXRD32(adapter, NETXEN_PEG_HALT_STATUS1);
2655	dev_err(&adapter->pdev->dev, "Dumping hw/fw registers\n"
2656			"PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2: 0x%x,\n"
2657			"PEG_NET_0_PC: 0x%x, PEG_NET_1_PC: 0x%x,\n"
2658			"PEG_NET_2_PC: 0x%x, PEG_NET_3_PC: 0x%x,\n"
2659			"PEG_NET_4_PC: 0x%x\n",
2660			peg_status,
2661			NXRD32(adapter, NETXEN_PEG_HALT_STATUS2),
2662			NXRD32(adapter, NETXEN_CRB_PEG_NET_0 + 0x3c),
2663			NXRD32(adapter, NETXEN_CRB_PEG_NET_1 + 0x3c),
2664			NXRD32(adapter, NETXEN_CRB_PEG_NET_2 + 0x3c),
2665			NXRD32(adapter, NETXEN_CRB_PEG_NET_3 + 0x3c),
2666			NXRD32(adapter, NETXEN_CRB_PEG_NET_4 + 0x3c));
2667	if (NX_FWERROR_PEGSTAT1(peg_status) == 0x67)
2668		dev_err(&adapter->pdev->dev,
2669			"Firmware aborted with error code 0x00006700. "
2670				"Device is being reset.\n");
2671detach:
2672	if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2673			!test_and_set_bit(__NX_RESETTING, &adapter->state))
2674		netxen_schedule_work(adapter, netxen_detach_work, 0);
2675	return 1;
2676}
2677
2678static void
2679netxen_fw_poll_work(struct work_struct *work)
2680{
2681	struct netxen_adapter *adapter = container_of(work,
2682				struct netxen_adapter, fw_work.work);
2683
2684	if (test_bit(__NX_RESETTING, &adapter->state))
2685		goto reschedule;
2686
2687	if (test_bit(__NX_DEV_UP, &adapter->state)) {
2688		if (!adapter->has_link_events) {
2689
2690			netxen_nic_handle_phy_intr(adapter);
2691
2692			if (adapter->link_changed)
2693				netxen_nic_set_link_parameters(adapter);
2694		}
2695	}
2696
2697	if (netxen_check_health(adapter))
2698		return;
2699
2700reschedule:
2701	netxen_schedule_work(adapter, netxen_fw_poll_work, FW_POLL_DELAY);
2702}
2703
2704static ssize_t
2705netxen_store_bridged_mode(struct device *dev,
2706		struct device_attribute *attr, const char *buf, size_t len)
2707{
2708	struct net_device *net = to_net_dev(dev);
2709	struct netxen_adapter *adapter = netdev_priv(net);
2710	unsigned long new;
2711	int ret = -EINVAL;
2712
2713	if (!(adapter->capabilities & NX_FW_CAPABILITY_BDG))
2714		goto err_out;
2715
2716	if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
2717		goto err_out;
2718
2719	if (strict_strtoul(buf, 2, &new))
2720		goto err_out;
2721
2722	if (!netxen_config_bridged_mode(adapter, !!new))
2723		ret = len;
2724
2725err_out:
2726	return ret;
2727}
2728
2729static ssize_t
2730netxen_show_bridged_mode(struct device *dev,
2731		struct device_attribute *attr, char *buf)
2732{
2733	struct net_device *net = to_net_dev(dev);
2734	struct netxen_adapter *adapter;
2735	int bridged_mode = 0;
2736
2737	adapter = netdev_priv(net);
2738
2739	if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
2740		bridged_mode = !!(adapter->flags & NETXEN_NIC_BRIDGE_ENABLED);
2741
2742	return sprintf(buf, "%d\n", bridged_mode);
2743}
2744
2745static struct device_attribute dev_attr_bridged_mode = {
2746       .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2747       .show = netxen_show_bridged_mode,
2748       .store = netxen_store_bridged_mode,
2749};
2750
2751static ssize_t
2752netxen_store_diag_mode(struct device *dev,
2753		struct device_attribute *attr, const char *buf, size_t len)
2754{
2755	struct netxen_adapter *adapter = dev_get_drvdata(dev);
2756	unsigned long new;
2757
2758	if (strict_strtoul(buf, 2, &new))
2759		return -EINVAL;
2760
2761	if (!!new != !!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2762		adapter->flags ^= NETXEN_NIC_DIAG_ENABLED;
2763
2764	return len;
2765}
2766
2767static ssize_t
2768netxen_show_diag_mode(struct device *dev,
2769		struct device_attribute *attr, char *buf)
2770{
2771	struct netxen_adapter *adapter = dev_get_drvdata(dev);
2772
2773	return sprintf(buf, "%d\n",
2774			!!(adapter->flags & NETXEN_NIC_DIAG_ENABLED));
2775}
2776
2777static struct device_attribute dev_attr_diag_mode = {
2778	.attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2779	.show = netxen_show_diag_mode,
2780	.store = netxen_store_diag_mode,
2781};
2782
2783static int
2784netxen_sysfs_validate_crb(struct netxen_adapter *adapter,
2785		loff_t offset, size_t size)
2786{
2787	size_t crb_size = 4;
2788
2789	if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2790		return -EIO;
2791
2792	if (offset < NETXEN_PCI_CRBSPACE) {
2793		if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
2794			return -EINVAL;
2795
2796		if (ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2797						NETXEN_PCI_CAMQM_2M_END))
2798			crb_size = 8;
2799		else
2800			return -EINVAL;
2801	}
2802
2803	if ((size != crb_size) || (offset & (crb_size-1)))
2804		return  -EINVAL;
2805
2806	return 0;
2807}
2808
2809static ssize_t
2810netxen_sysfs_read_crb(struct file *filp, struct kobject *kobj,
2811		struct bin_attribute *attr,
2812		char *buf, loff_t offset, size_t size)
2813{
2814	struct device *dev = container_of(kobj, struct device, kobj);
2815	struct netxen_adapter *adapter = dev_get_drvdata(dev);
2816	u32 data;
2817	u64 qmdata;
2818	int ret;
2819
2820	ret = netxen_sysfs_validate_crb(adapter, offset, size);
2821	if (ret != 0)
2822		return ret;
2823
2824	if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2825		ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2826					NETXEN_PCI_CAMQM_2M_END)) {
2827		netxen_pci_camqm_read_2M(adapter, offset, &qmdata);
2828		memcpy(buf, &qmdata, size);
2829	} else {
2830		data = NXRD32(adapter, offset);
2831		memcpy(buf, &data, size);
2832	}
2833
2834	return size;
2835}
2836
2837static ssize_t
2838netxen_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2839		struct bin_attribute *attr,
2840		char *buf, loff_t offset, size_t size)
2841{
2842	struct device *dev = container_of(kobj, struct device, kobj);
2843	struct netxen_adapter *adapter = dev_get_drvdata(dev);
2844	u32 data;
2845	u64 qmdata;
2846	int ret;
2847
2848	ret = netxen_sysfs_validate_crb(adapter, offset, size);
2849	if (ret != 0)
2850		return ret;
2851
2852	if (NX_IS_REVISION_P3(adapter->ahw.revision_id) &&
2853		ADDR_IN_RANGE(offset, NETXEN_PCI_CAMQM,
2854					NETXEN_PCI_CAMQM_2M_END)) {
2855		memcpy(&qmdata, buf, size);
2856		netxen_pci_camqm_write_2M(adapter, offset, qmdata);
2857	} else {
2858		memcpy(&data, buf, size);
2859		NXWR32(adapter, offset, data);
2860	}
2861
2862	return size;
2863}
2864
2865static int
2866netxen_sysfs_validate_mem(struct netxen_adapter *adapter,
2867		loff_t offset, size_t size)
2868{
2869	if (!(adapter->flags & NETXEN_NIC_DIAG_ENABLED))
2870		return -EIO;
2871
2872	if ((size != 8) || (offset & 0x7))
2873		return  -EIO;
2874
2875	return 0;
2876}
2877
2878static ssize_t
2879netxen_sysfs_read_mem(struct file *filp, struct kobject *kobj,
2880		struct bin_attribute *attr,
2881		char *buf, loff_t offset, size_t size)
2882{
2883	struct device *dev = container_of(kobj, struct device, kobj);
2884	struct netxen_adapter *adapter = dev_get_drvdata(dev);
2885	u64 data;
2886	int ret;
2887
2888	ret = netxen_sysfs_validate_mem(adapter, offset, size);
2889	if (ret != 0)
2890		return ret;
2891
2892	if (adapter->pci_mem_read(adapter, offset, &data))
2893		return -EIO;
2894
2895	memcpy(buf, &data, size);
2896
2897	return size;
2898}
2899
2900static ssize_t netxen_sysfs_write_mem(struct file *filp, struct kobject *kobj,
2901		struct bin_attribute *attr, char *buf,
2902		loff_t offset, size_t size)
2903{
2904	struct device *dev = container_of(kobj, struct device, kobj);
2905	struct netxen_adapter *adapter = dev_get_drvdata(dev);
2906	u64 data;
2907	int ret;
2908
2909	ret = netxen_sysfs_validate_mem(adapter, offset, size);
2910	if (ret != 0)
2911		return ret;
2912
2913	memcpy(&data, buf, size);
2914
2915	if (adapter->pci_mem_write(adapter, offset, data))
2916		return -EIO;
2917
2918	return size;
2919}
2920
2921
2922static struct bin_attribute bin_attr_crb = {
2923	.attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2924	.size = 0,
2925	.read = netxen_sysfs_read_crb,
2926	.write = netxen_sysfs_write_crb,
2927};
2928
2929static struct bin_attribute bin_attr_mem = {
2930	.attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2931	.size = 0,
2932	.read = netxen_sysfs_read_mem,
2933	.write = netxen_sysfs_write_mem,
2934};
2935
2936static ssize_t
2937netxen_sysfs_read_dimm(struct file *filp, struct kobject *kobj,
2938		struct bin_attribute *attr,
2939		char *buf, loff_t offset, size_t size)
2940{
2941	struct device *dev = container_of(kobj, struct device, kobj);
2942	struct netxen_adapter *adapter = dev_get_drvdata(dev);
2943	struct net_device *netdev = adapter->netdev;
2944	struct netxen_dimm_cfg dimm;
2945	u8 dw, rows, cols, banks, ranks;
2946	u32 val;
2947
2948	if (size != sizeof(struct netxen_dimm_cfg)) {
2949		netdev_err(netdev, "Invalid size\n");
2950		return -1;
2951	}
2952
2953	memset(&dimm, 0, sizeof(struct netxen_dimm_cfg));
2954	val = NXRD32(adapter, NETXEN_DIMM_CAPABILITY);
2955
2956	/* Checks if DIMM info is valid. */
2957	if (val & NETXEN_DIMM_VALID_FLAG) {
2958		netdev_err(netdev, "Invalid DIMM flag\n");
2959		dimm.presence = 0xff;
2960		goto out;
2961	}
2962
2963	rows = NETXEN_DIMM_NUMROWS(val);
2964	cols = NETXEN_DIMM_NUMCOLS(val);
2965	ranks = NETXEN_DIMM_NUMRANKS(val);
2966	banks = NETXEN_DIMM_NUMBANKS(val);
2967	dw = NETXEN_DIMM_DATAWIDTH(val);
2968
2969	dimm.presence = (val & NETXEN_DIMM_PRESENT);
2970
2971	/* Checks if DIMM info is present. */
2972	if (!dimm.presence) {
2973		netdev_err(netdev, "DIMM not present\n");
2974		goto out;
2975	}
2976
2977	dimm.dimm_type = NETXEN_DIMM_TYPE(val);
2978
2979	switch (dimm.dimm_type) {
2980	case NETXEN_DIMM_TYPE_RDIMM:
2981	case NETXEN_DIMM_TYPE_UDIMM:
2982	case NETXEN_DIMM_TYPE_SO_DIMM:
2983	case NETXEN_DIMM_TYPE_Micro_DIMM:
2984	case NETXEN_DIMM_TYPE_Mini_RDIMM:
2985	case NETXEN_DIMM_TYPE_Mini_UDIMM:
2986		break;
2987	default:
2988		netdev_err(netdev, "Invalid DIMM type %x\n", dimm.dimm_type);
2989		goto out;
2990	}
2991
2992	if (val & NETXEN_DIMM_MEMTYPE_DDR2_SDRAM)
2993		dimm.mem_type = NETXEN_DIMM_MEM_DDR2_SDRAM;
2994	else
2995		dimm.mem_type = NETXEN_DIMM_MEMTYPE(val);
2996
2997	if (val & NETXEN_DIMM_SIZE) {
2998		dimm.size = NETXEN_DIMM_STD_MEM_SIZE;
2999		goto out;
3000	}
3001
3002	if (!rows) {
3003		netdev_err(netdev, "Invalid no of rows %x\n", rows);
3004		goto out;
3005	}
3006
3007	if (!cols) {
3008		netdev_err(netdev, "Invalid no of columns %x\n", cols);
3009		goto out;
3010	}
3011
3012	if (!banks) {
3013		netdev_err(netdev, "Invalid no of banks %x\n", banks);
3014		goto out;
3015	}
3016
3017	ranks += 1;
3018
3019	switch (dw) {
3020	case 0x0:
3021		dw = 32;
3022		break;
3023	case 0x1:
3024		dw = 33;
3025		break;
3026	case 0x2:
3027		dw = 36;
3028		break;
3029	case 0x3:
3030		dw = 64;
3031		break;
3032	case 0x4:
3033		dw = 72;
3034		break;
3035	case 0x5:
3036		dw = 80;
3037		break;
3038	case 0x6:
3039		dw = 128;
3040		break;
3041	case 0x7:
3042		dw = 144;
3043		break;
3044	default:
3045		netdev_err(netdev, "Invalid data-width %x\n", dw);
3046		goto out;
3047	}
3048
3049	dimm.size = ((1 << rows) * (1 << cols) * dw * banks * ranks) / 8;
3050	/* Size returned in MB. */
3051	dimm.size = (dimm.size) / 0x100000;
3052out:
3053	memcpy(buf, &dimm, sizeof(struct netxen_dimm_cfg));
3054	return sizeof(struct netxen_dimm_cfg);
3055
3056}
3057
3058static struct bin_attribute bin_attr_dimm = {
3059	.attr = { .name = "dimm", .mode = (S_IRUGO | S_IWUSR) },
3060	.size = 0,
3061	.read = netxen_sysfs_read_dimm,
3062};
3063
3064
3065static void
3066netxen_create_sysfs_entries(struct netxen_adapter *adapter)
3067{
3068	struct device *dev = &adapter->pdev->dev;
3069
3070	if (adapter->capabilities & NX_FW_CAPABILITY_BDG) {
3071		/* bridged_mode control */
3072		if (device_create_file(dev, &dev_attr_bridged_mode)) {
3073			dev_warn(dev,
3074				"failed to create bridged_mode sysfs entry\n");
3075		}
3076	}
3077}
3078
3079static void
3080netxen_remove_sysfs_entries(struct netxen_adapter *adapter)
3081{
3082	struct device *dev = &adapter->pdev->dev;
3083
3084	if (adapter->capabilities & NX_FW_CAPABILITY_BDG)
3085		device_remove_file(dev, &dev_attr_bridged_mode);
3086}
3087
3088static void
3089netxen_create_diag_entries(struct netxen_adapter *adapter)
3090{
3091	struct pci_dev *pdev = adapter->pdev;
3092	struct device *dev;
3093
3094	dev = &pdev->dev;
3095	if (device_create_file(dev, &dev_attr_diag_mode))
3096		dev_info(dev, "failed to create diag_mode sysfs entry\n");
3097	if (device_create_bin_file(dev, &bin_attr_crb))
3098		dev_info(dev, "failed to create crb sysfs entry\n");
3099	if (device_create_bin_file(dev, &bin_attr_mem))
3100		dev_info(dev, "failed to create mem sysfs entry\n");
3101	if (device_create_bin_file(dev, &bin_attr_dimm))
3102		dev_info(dev, "failed to create dimm sysfs entry\n");
3103}
3104
3105
3106static void
3107netxen_remove_diag_entries(struct netxen_adapter *adapter)
3108{
3109	struct pci_dev *pdev = adapter->pdev;
3110	struct device *dev = &pdev->dev;
3111
3112	device_remove_file(dev, &dev_attr_diag_mode);
3113	device_remove_bin_file(dev, &bin_attr_crb);
3114	device_remove_bin_file(dev, &bin_attr_mem);
3115	device_remove_bin_file(dev, &bin_attr_dimm);
3116}
3117
3118#ifdef CONFIG_INET
3119
3120#define is_netxen_netdev(dev) (dev->netdev_ops == &netxen_netdev_ops)
3121
3122static int
3123netxen_destip_supported(struct netxen_adapter *adapter)
3124{
3125	if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
3126		return 0;
3127
3128	if (adapter->ahw.cut_through)
3129		return 0;
3130
3131	return 1;
3132}
3133
3134static void
3135netxen_free_vlan_ip_list(struct netxen_adapter *adapter)
3136{
3137	struct nx_vlan_ip_list  *cur;
3138	struct list_head *head = &adapter->vlan_ip_list;
3139
3140	while (!list_empty(head)) {
3141		cur = list_entry(head->next, struct nx_vlan_ip_list, list);
3142		netxen_config_ipaddr(adapter, cur->ip_addr, NX_IP_DOWN);
3143		list_del(&cur->list);
3144		kfree(cur);
3145	}
3146
3147}
3148static void
3149netxen_list_config_vlan_ip(struct netxen_adapter *adapter,
3150		struct in_ifaddr *ifa, unsigned long event)
3151{
3152	struct net_device *dev;
3153	struct nx_vlan_ip_list *cur, *tmp_cur;
3154	struct list_head *head;
3155
3156	dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
3157
3158	if (dev == NULL)
3159		return;
3160
3161	if (!is_vlan_dev(dev))
3162		return;
3163
3164	switch (event) {
3165	case NX_IP_UP:
3166		list_for_each(head, &adapter->vlan_ip_list) {
3167			cur = list_entry(head, struct nx_vlan_ip_list, list);
3168
3169			if (cur->ip_addr == ifa->ifa_address)
3170				return;
3171		}
3172
3173		cur = kzalloc(sizeof(struct nx_vlan_ip_list), GFP_ATOMIC);
3174		if (cur == NULL) {
3175			printk(KERN_ERR "%s: failed to add vlan ip to list\n",
3176					adapter->netdev->name);
3177			return;
3178		}
3179
3180		cur->ip_addr = ifa->ifa_address;
3181		list_add_tail(&cur->list, &adapter->vlan_ip_list);
3182		break;
3183	case NX_IP_DOWN:
3184		list_for_each_entry_safe(cur, tmp_cur,
3185					&adapter->vlan_ip_list, list) {
3186			if (cur->ip_addr == ifa->ifa_address) {
3187				list_del(&cur->list);
3188				kfree(cur);
3189				break;
3190			}
3191		}
3192	}
3193}
3194static void
3195netxen_config_indev_addr(struct netxen_adapter *adapter,
3196		struct net_device *dev, unsigned long event)
3197{
3198	struct in_device *indev;
3199
3200	if (!netxen_destip_supported(adapter))
3201		return;
3202
3203	indev = in_dev_get(dev);
3204	if (!indev)
3205		return;
3206
3207	for_ifa(indev) {
3208		switch (event) {
3209		case NETDEV_UP:
3210			netxen_config_ipaddr(adapter,
3211					ifa->ifa_address, NX_IP_UP);
3212			netxen_list_config_vlan_ip(adapter, ifa, NX_IP_UP);
3213			break;
3214		case NETDEV_DOWN:
3215			netxen_config_ipaddr(adapter,
3216					ifa->ifa_address, NX_IP_DOWN);
3217			netxen_list_config_vlan_ip(adapter, ifa, NX_IP_DOWN);
3218			break;
3219		default:
3220			break;
3221		}
3222	} endfor_ifa(indev);
3223
3224	in_dev_put(indev);
3225}
3226
3227static void
3228netxen_restore_indev_addr(struct net_device *netdev, unsigned long event)
3229
3230{
3231	struct netxen_adapter *adapter = netdev_priv(netdev);
3232	struct nx_vlan_ip_list *pos, *tmp_pos;
3233	unsigned long ip_event;
3234
3235	ip_event = (event == NETDEV_UP) ? NX_IP_UP : NX_IP_DOWN;
3236	netxen_config_indev_addr(adapter, netdev, event);
3237
3238	list_for_each_entry_safe(pos, tmp_pos, &adapter->vlan_ip_list, list) {
3239		netxen_config_ipaddr(adapter, pos->ip_addr, ip_event);
3240	}
3241}
3242
3243static int netxen_netdev_event(struct notifier_block *this,
3244				 unsigned long event, void *ptr)
3245{
3246	struct netxen_adapter *adapter;
3247	struct net_device *dev = (struct net_device *)ptr;
3248	struct net_device *orig_dev = dev;
3249
3250recheck:
3251	if (dev == NULL)
3252		goto done;
3253
3254	if (dev->priv_flags & IFF_802_1Q_VLAN) {
3255		dev = vlan_dev_real_dev(dev);
3256		goto recheck;
3257	}
3258
3259	if (!is_netxen_netdev(dev))
3260		goto done;
3261
3262	adapter = netdev_priv(dev);
3263
3264	if (!adapter)
3265		goto done;
3266
3267	if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
3268		goto done;
3269
3270	netxen_config_indev_addr(adapter, orig_dev, event);
3271done:
3272	return NOTIFY_DONE;
3273}
3274
3275static int
3276netxen_inetaddr_event(struct notifier_block *this,
3277		unsigned long event, void *ptr)
3278{
3279	struct netxen_adapter *adapter;
3280	struct net_device *dev;
3281
3282	struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3283
3284	dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
3285
3286recheck:
3287	if (dev == NULL)
3288		goto done;
3289
3290	if (dev->priv_flags & IFF_802_1Q_VLAN) {
3291		dev = vlan_dev_real_dev(dev);
3292		goto recheck;
3293	}
3294
3295	if (!is_netxen_netdev(dev))
3296		goto done;
3297
3298	adapter = netdev_priv(dev);
3299
3300	if (!adapter || !netxen_destip_supported(adapter))
3301		goto done;
3302
3303	if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC)
3304		goto done;
3305
3306	switch (event) {
3307	case NETDEV_UP:
3308		netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_UP);
3309		netxen_list_config_vlan_ip(adapter, ifa, NX_IP_UP);
3310		break;
3311	case NETDEV_DOWN:
3312		netxen_config_ipaddr(adapter, ifa->ifa_address, NX_IP_DOWN);
3313		netxen_list_config_vlan_ip(adapter, ifa, NX_IP_DOWN);
3314		break;
3315	default:
3316		break;
3317	}
3318
3319done:
3320	return NOTIFY_DONE;
3321}
3322
3323static struct notifier_block	netxen_netdev_cb = {
3324	.notifier_call = netxen_netdev_event,
3325};
3326
3327static struct notifier_block netxen_inetaddr_cb = {
3328	.notifier_call = netxen_inetaddr_event,
3329};
3330#else
3331static void
3332netxen_restore_indev_addr(struct net_device *dev, unsigned long event)
3333{ }
3334static void
3335netxen_free_vlan_ip_list(struct netxen_adapter *adapter)
3336{ }
3337#endif
3338
3339static struct pci_error_handlers netxen_err_handler = {
3340	.error_detected = netxen_io_error_detected,
3341	.slot_reset = netxen_io_slot_reset,
3342	.resume = netxen_io_resume,
3343};
3344
3345static struct pci_driver netxen_driver = {
3346	.name = netxen_nic_driver_name,
3347	.id_table = netxen_pci_tbl,
3348	.probe = netxen_nic_probe,
3349	.remove = __devexit_p(netxen_nic_remove),
3350#ifdef CONFIG_PM
3351	.suspend = netxen_nic_suspend,
3352	.resume = netxen_nic_resume,
3353#endif
3354	.shutdown = netxen_nic_shutdown,
3355	.err_handler = &netxen_err_handler
3356};
3357
3358static int __init netxen_init_module(void)
3359{
3360	printk(KERN_INFO "%s\n", netxen_nic_driver_string);
3361
3362#ifdef CONFIG_INET
3363	register_netdevice_notifier(&netxen_netdev_cb);
3364	register_inetaddr_notifier(&netxen_inetaddr_cb);
3365#endif
3366	return pci_register_driver(&netxen_driver);
3367}
3368
3369module_init(netxen_init_module);
3370
3371static void __exit netxen_exit_module(void)
3372{
3373	pci_unregister_driver(&netxen_driver);
3374
3375#ifdef CONFIG_INET
3376	unregister_inetaddr_notifier(&netxen_inetaddr_cb);
3377	unregister_netdevice_notifier(&netxen_netdev_cb);
3378#endif
3379}
3380
3381module_exit(netxen_exit_module);