netxen_nic.h

	__le16 context_id;		/* Handle for context */
	u8  phys_port;		/* Physical id of port */
	u8  virt_port;		/* Virtual/Logical id of port */
	nx_cardrsp_cds_ring_t cds_ring;	/* Card cds settings */
	u8  reserved[128];	/* future expansion */
} nx_cardrsp_tx_ctx_t;

#define SIZEOF_HOSTRQ_TX(HOSTRQ_TX)	(sizeof(HOSTRQ_TX))
#define SIZEOF_CARDRSP_TX(CARDRSP_TX)	(sizeof(CARDRSP_TX))

/* CRB */

#define NX_HOST_RDS_CRB_MODE_UNIQUE	0
#define NX_HOST_RDS_CRB_MODE_SHARED	1
#define NX_HOST_RDS_CRB_MODE_CUSTOM	2
#define NX_HOST_RDS_CRB_MODE_MAX	3

#define NX_HOST_INT_CRB_MODE_UNIQUE	0
#define NX_HOST_INT_CRB_MODE_SHARED	1
#define NX_HOST_INT_CRB_MODE_NORX	2
#define NX_HOST_INT_CRB_MODE_NOTX	3
#define NX_HOST_INT_CRB_MODE_NORXTX	4


/* MAC */

#define MC_COUNT_P2	16
#define MC_COUNT_P3	38

#define NETXEN_MAC_NOOP	0
#define NETXEN_MAC_ADD	1
#define NETXEN_MAC_DEL	2

typedef struct nx_mac_list_s {
	struct list_head list;
	uint8_t mac_addr[ETH_ALEN+2];
} nx_mac_list_t;

/*
 * Interrupt coalescing defaults. The defaults are for 1500 MTU. It is
 * adjusted based on configured MTU.
 */
#define NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US	3
#define NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS	256
#define NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS	64
#define NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US	4

#define NETXEN_NIC_INTR_DEFAULT			0x04

typedef union {
	struct {
		uint16_t	rx_packets;
		uint16_t	rx_time_us;
		uint16_t	tx_packets;
		uint16_t	tx_time_us;
	} data;
	uint64_t		word;
} nx_nic_intr_coalesce_data_t;

typedef struct {
	uint16_t			stats_time_us;
	uint16_t			rate_sample_time;
	uint16_t			flags;
	uint16_t			rsvd_1;
	uint32_t			low_threshold;
	uint32_t			high_threshold;
	nx_nic_intr_coalesce_data_t	normal;
	nx_nic_intr_coalesce_data_t	low;
	nx_nic_intr_coalesce_data_t	high;
	nx_nic_intr_coalesce_data_t	irq;
} nx_nic_intr_coalesce_t;

#define NX_HOST_REQUEST		0x13
#define NX_NIC_REQUEST		0x14

#define NX_MAC_EVENT		0x1

/*
 * Driver --> Firmware
 */
#define NX_NIC_H2C_OPCODE_START				0
#define NX_NIC_H2C_OPCODE_CONFIG_RSS			1
#define NX_NIC_H2C_OPCODE_CONFIG_RSS_TBL		2
#define NX_NIC_H2C_OPCODE_CONFIG_INTR_COALESCE		3
#define NX_NIC_H2C_OPCODE_CONFIG_LED			4
#define NX_NIC_H2C_OPCODE_CONFIG_PROMISCUOUS		5
#define NX_NIC_H2C_OPCODE_CONFIG_L2_MAC			6
#define NX_NIC_H2C_OPCODE_LRO_REQUEST			7
#define NX_NIC_H2C_OPCODE_GET_SNMP_STATS		8
#define NX_NIC_H2C_OPCODE_PROXY_START_REQUEST		9
#define NX_NIC_H2C_OPCODE_PROXY_STOP_REQUEST		10
#define NX_NIC_H2C_OPCODE_PROXY_SET_MTU			11
#define NX_NIC_H2C_OPCODE_PROXY_SET_VPORT_MISS_MODE	12
#define NX_NIC_H2C_OPCODE_GET_FINGER_PRINT_REQUEST	13
#define NX_NIC_H2C_OPCODE_INSTALL_LICENSE_REQUEST	14
#define NX_NIC_H2C_OPCODE_GET_LICENSE_CAPABILITY_REQUEST	15
#define NX_NIC_H2C_OPCODE_GET_NET_STATS			16
#define NX_NIC_H2C_OPCODE_PROXY_UPDATE_P2V		17
#define NX_NIC_H2C_OPCODE_CONFIG_IPADDR			18
#define NX_NIC_H2C_OPCODE_CONFIG_LOOPBACK		19
#define NX_NIC_H2C_OPCODE_PROXY_STOP_DONE		20
#define NX_NIC_H2C_OPCODE_GET_LINKEVENT			21
#define NX_NIC_C2C_OPCODE				22
#define NX_NIC_H2C_OPCODE_LAST				23

/*
 * Firmware --> Driver
 */

#define NX_NIC_C2H_OPCODE_START				128
#define NX_NIC_C2H_OPCODE_CONFIG_RSS_RESPONSE		129
#define NX_NIC_C2H_OPCODE_CONFIG_RSS_TBL_RESPONSE	130
#define NX_NIC_C2H_OPCODE_CONFIG_MAC_RESPONSE		131
#define NX_NIC_C2H_OPCODE_CONFIG_PROMISCUOUS_RESPONSE	132
#define NX_NIC_C2H_OPCODE_CONFIG_L2_MAC_RESPONSE	133
#define NX_NIC_C2H_OPCODE_LRO_DELETE_RESPONSE		134
#define NX_NIC_C2H_OPCODE_LRO_ADD_FAILURE_RESPONSE	135
#define NX_NIC_C2H_OPCODE_GET_SNMP_STATS		136
#define NX_NIC_C2H_OPCODE_GET_FINGER_PRINT_REPLY	137
#define NX_NIC_C2H_OPCODE_INSTALL_LICENSE_REPLY		138
#define NX_NIC_C2H_OPCODE_GET_LICENSE_CAPABILITIES_REPLY 139
#define NX_NIC_C2H_OPCODE_GET_NET_STATS_RESPONSE	140
#define NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE	141
#define NX_NIC_C2H_OPCODE_LAST				142

#define VPORT_MISS_MODE_DROP		0 /* drop all unmatched */
#define VPORT_MISS_MODE_ACCEPT_ALL	1 /* accept all packets */
#define VPORT_MISS_MODE_ACCEPT_MULTI	2 /* accept unmatched multicast */

#define NX_FW_CAPABILITY_LINK_NOTIFICATION	(1 << 5)
#define NX_FW_CAPABILITY_SWITCHING		(1 << 6)

/* module types */
#define LINKEVENT_MODULE_NOT_PRESENT			1
#define LINKEVENT_MODULE_OPTICAL_UNKNOWN		2
#define LINKEVENT_MODULE_OPTICAL_SRLR			3
#define LINKEVENT_MODULE_OPTICAL_LRM			4
#define LINKEVENT_MODULE_OPTICAL_SFP_1G			5
#define LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE	6
#define LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN	7
#define LINKEVENT_MODULE_TWINAX				8

#define LINKSPEED_10GBPS	10000
#define LINKSPEED_1GBPS		1000
#define LINKSPEED_100MBPS	100
#define LINKSPEED_10MBPS	10

#define LINKSPEED_ENCODED_10MBPS	0
#define LINKSPEED_ENCODED_100MBPS	1
#define LINKSPEED_ENCODED_1GBPS		2

#define LINKEVENT_AUTONEG_DISABLED	0
#define LINKEVENT_AUTONEG_ENABLED	1

#define LINKEVENT_HALF_DUPLEX		0
#define LINKEVENT_FULL_DUPLEX		1

#define LINKEVENT_LINKSPEED_MBPS	0
#define LINKEVENT_LINKSPEED_ENCODED	1

/* firmware response header:
 *	63:58 - message type
 *	57:56 - owner
 *	55:53 - desc count
 *	52:48 - reserved
 *	47:40 - completion id
 *	39:32 - opcode
 *	31:16 - error code
 *	15:00 - reserved
 */
#define netxen_get_nic_msgtype(msg_hdr)	\
	((msg_hdr >> 58) & 0x3F)
#define netxen_get_nic_msg_compid(msg_hdr)	\
	((msg_hdr >> 40) & 0xFF)
#define netxen_get_nic_msg_opcode(msg_hdr)	\
	((msg_hdr >> 32) & 0xFF)
#define netxen_get_nic_msg_errcode(msg_hdr)	\
	((msg_hdr >> 16) & 0xFFFF)

typedef struct {
	union {
		struct {
			u64 hdr;
			u64 body[7];
		};
		u64 words[8];
	};
} nx_fw_msg_t;

typedef struct {
	__le64 qhdr;
	__le64 req_hdr;
	__le64 words[6];
} nx_nic_req_t;

typedef struct {
	u8 op;
	u8 tag;
	u8 mac_addr[6];
} nx_mac_req_t;

#define MAX_PENDING_DESC_BLOCK_SIZE	64

#define NETXEN_NIC_MSI_ENABLED		0x02
#define NETXEN_NIC_MSIX_ENABLED		0x04
#define NETXEN_IS_MSI_FAMILY(adapter) \
	((adapter)->flags & (NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED))

#define MSIX_ENTRIES_PER_ADAPTER	NUM_STS_DESC_RINGS
#define NETXEN_MSIX_TBL_SPACE		8192
#define NETXEN_PCI_REG_MSIX_TBL		0x44

#define NETXEN_DB_MAPSIZE_BYTES    	0x1000

#define NETXEN_NETDEV_WEIGHT 128
#define NETXEN_ADAPTER_UP_MAGIC 777
#define NETXEN_NIC_PEG_TUNE 0

struct netxen_dummy_dma {
	void *addr;
	dma_addr_t phys_addr;
};

struct netxen_adapter {
	struct netxen_hardware_context ahw;

	struct net_device *netdev;
	struct pci_dev *pdev;
	struct list_head mac_list;

	u32 curr_window;
	u32 crb_win;
	rwlock_t adapter_lock;

	spinlock_t tx_clean_lock;

	u16 num_txd;
	u16 num_rxd;
	u16 num_jumbo_rxd;
	u16 num_lro_rxd;

	u8 max_rds_rings;
	u8 max_sds_rings;
	u8 driver_mismatch;
	u8 msix_supported;
	u8 rx_csum;
	u8 pci_using_dac;
	u8 portnum;
	u8 physical_port;

	u8 mc_enabled;
	u8 max_mc_count;
	u8 rss_supported;
	u8 resv2;
	u32 resv3;

	u8 has_link_events;
	u8 fw_type;
	u16 tx_context_id;
	u16 mtu;
	u16 is_up;

	u16 link_speed;
	u16 link_duplex;
	u16 link_autoneg;
	u16 module_type;

	u32 capabilities;
	u32 flags;
	u32 irq;
	u32 temp;

	u32 msi_tgt_status;
	u32 resv4;

	struct netxen_adapter_stats stats;

	struct netxen_recv_context recv_ctx;
	struct nx_host_tx_ring *tx_ring;

	int (*enable_phy_interrupts) (struct netxen_adapter *);
	int (*disable_phy_interrupts) (struct netxen_adapter *);
	int (*macaddr_set) (struct netxen_adapter *, u8 *);
	int (*set_mtu) (struct netxen_adapter *, int);
	int (*set_promisc) (struct netxen_adapter *, u32);
	void (*set_multi) (struct net_device *);
	int (*phy_read) (struct netxen_adapter *, long reg, u32 *);
	int (*phy_write) (struct netxen_adapter *, long reg, u32 val);
	int (*init_port) (struct netxen_adapter *, int);
	int (*stop_port) (struct netxen_adapter *);

	u32 (*hw_read_wx)(struct netxen_adapter *, ulong);
	int (*hw_write_wx)(struct netxen_adapter *, ulong, u32);
	int (*pci_mem_read)(struct netxen_adapter *, u64, void *, int);
	int (*pci_mem_write)(struct netxen_adapter *, u64, void *, int);
	int (*pci_write_immediate)(struct netxen_adapter *, u64, u32);
	u32 (*pci_read_immediate)(struct netxen_adapter *, u64);
	unsigned long (*pci_set_window)(struct netxen_adapter *,
			unsigned long long);

	struct netxen_legacy_intr_set legacy_intr;

	struct msix_entry msix_entries[MSIX_ENTRIES_PER_ADAPTER];

	struct netxen_dummy_dma dummy_dma;

	struct work_struct watchdog_task;
	struct timer_list watchdog_timer;
	struct work_struct  tx_timeout_task;

	struct net_device_stats net_stats;

	nx_nic_intr_coalesce_t coal;

	u32 fw_major;
	u32 fw_version;
	const struct firmware *fw;
};

/*
 * NetXen dma watchdog control structure
 *
 *	Bit 0		: enabled => R/O: 1 watchdog active, 0 inactive
 *	Bit 1		: disable_request => 1 req disable dma watchdog
 *	Bit 2		: enable_request =>  1 req enable dma watchdog
 *	Bit 3-31	: unused
 */

#define netxen_set_dma_watchdog_disable_req(config_word) \
	_netxen_set_bits(config_word, 1, 1, 1)
#define netxen_set_dma_watchdog_enable_req(config_word) \
	_netxen_set_bits(config_word, 2, 1, 1)
#define netxen_get_dma_watchdog_enabled(config_word) \
	((config_word) & 0x1)
#define netxen_get_dma_watchdog_disabled(config_word) \
	(((config_word) >> 1) & 0x1)

int netxen_niu_xgbe_enable_phy_interrupts(struct netxen_adapter *adapter);
int netxen_niu_gbe_enable_phy_interrupts(struct netxen_adapter *adapter);
int netxen_niu_xgbe_disable_phy_interrupts(struct netxen_adapter *adapter);
int netxen_niu_gbe_disable_phy_interrupts(struct netxen_adapter *adapter);
int netxen_niu_gbe_phy_read(struct netxen_adapter *adapter, long reg,
			    __u32 * readval);
int netxen_niu_gbe_phy_write(struct netxen_adapter *adapter,
			     long reg, __u32 val);

/* Functions available from netxen_nic_hw.c */
int netxen_nic_set_mtu_xgb(struct netxen_adapter *adapter, int new_mtu);
int netxen_nic_set_mtu_gb(struct netxen_adapter *adapter, int new_mtu);

int netxen_p2_nic_set_mac_addr(struct netxen_adapter *adapter, u8 *addr);
int netxen_p3_nic_set_mac_addr(struct netxen_adapter *adapter, u8 *addr);

#define NXRD32(adapter, off) \
	(adapter->hw_read_wx(adapter, off))
#define NXWR32(adapter, off, val) \
	(adapter->hw_write_wx(adapter, off, val))

int netxen_nic_get_board_info(struct netxen_adapter *adapter);
void netxen_nic_get_firmware_info(struct netxen_adapter *adapter);
int netxen_nic_wol_supported(struct netxen_adapter *adapter);

u32 netxen_nic_hw_read_wx_128M(struct netxen_adapter *adapter, ulong off);
int netxen_nic_hw_write_wx_128M(struct netxen_adapter *adapter,
		ulong off, u32 data);
int netxen_nic_pci_mem_read_128M(struct netxen_adapter *adapter,
		u64 off, void *data, int size);
int netxen_nic_pci_mem_write_128M(struct netxen_adapter *adapter,
		u64 off, void *data, int size);
int netxen_nic_pci_write_immediate_128M(struct netxen_adapter *adapter,
		u64 off, u32 data);
u32 netxen_nic_pci_read_immediate_128M(struct netxen_adapter *adapter, u64 off);
void netxen_nic_pci_write_normalize_128M(struct netxen_adapter *adapter,
		u64 off, u32 data);
u32 netxen_nic_pci_read_normalize_128M(struct netxen_adapter *adapter, u64 off);
unsigned long netxen_nic_pci_set_window_128M(struct netxen_adapter *adapter,
		unsigned long long addr);
void netxen_nic_pci_change_crbwindow_128M(struct netxen_adapter *adapter,
		u32 wndw);

u32 netxen_nic_hw_read_wx_2M(struct netxen_adapter *adapter, ulong off);
int netxen_nic_hw_write_wx_2M(struct netxen_adapter *adapter,
		ulong off, u32 data);
int netxen_nic_pci_mem_read_2M(struct netxen_adapter *adapter,
		u64 off, void *data, int size);
int netxen_nic_pci_mem_write_2M(struct netxen_adapter *adapter,
		u64 off, void *data, int size);
int netxen_nic_pci_write_immediate_2M(struct netxen_adapter *adapter,
		u64 off, u32 data);
u32 netxen_nic_pci_read_immediate_2M(struct netxen_adapter *adapter, u64 off);
void netxen_nic_pci_write_normalize_2M(struct netxen_adapter *adapter,
		u64 off, u32 data);
u32 netxen_nic_pci_read_normalize_2M(struct netxen_adapter *adapter, u64 off);
unsigned long netxen_nic_pci_set_window_2M(struct netxen_adapter *adapter,
		unsigned long long addr);

/* Functions from netxen_nic_init.c */
void netxen_free_adapter_offload(struct netxen_adapter *adapter);
int netxen_initialize_adapter_offload(struct netxen_adapter *adapter);
int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val);
int netxen_load_firmware(struct netxen_adapter *adapter);
int netxen_need_fw_reset(struct netxen_adapter *adapter);
void netxen_request_firmware(struct netxen_adapter *adapter);
void netxen_release_firmware(struct netxen_adapter *adapter);
int netxen_pinit_from_rom(struct netxen_adapter *adapter, int verbose);

int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp);
int netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
				u8 *bytes, size_t size);
int netxen_rom_fast_write_words(struct netxen_adapter *adapter, int addr,
				u8 *bytes, size_t size);
int netxen_flash_unlock(struct netxen_adapter *adapter);
int netxen_backup_crbinit(struct netxen_adapter *adapter);
int netxen_flash_erase_secondary(struct netxen_adapter *adapter);
int netxen_flash_erase_primary(struct netxen_adapter *adapter);
void netxen_halt_pegs(struct netxen_adapter *adapter);

int netxen_rom_se(struct netxen_adapter *adapter, int addr);

int netxen_alloc_sw_resources(struct netxen_adapter *adapter);
void netxen_free_sw_resources(struct netxen_adapter *adapter);

int netxen_alloc_hw_resources(struct netxen_adapter *adapter);
void netxen_free_hw_resources(struct netxen_adapter *adapter);

void netxen_release_rx_buffers(struct netxen_adapter *adapter);
void netxen_release_tx_buffers(struct netxen_adapter *adapter);

void netxen_initialize_adapter_ops(struct netxen_adapter *adapter);
int netxen_init_firmware(struct netxen_adapter *adapter);
void netxen_nic_clear_stats(struct netxen_adapter *adapter);
void netxen_watchdog_task(struct work_struct *work);
void netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
		struct nx_host_rds_ring *rds_ring);
int netxen_process_cmd_ring(struct netxen_adapter *adapter);
int netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max);
void netxen_p2_nic_set_multi(struct net_device *netdev);
void netxen_p3_nic_set_multi(struct net_device *netdev);
void netxen_p3_free_mac_list(struct netxen_adapter *adapter);
int netxen_p3_nic_set_promisc(struct netxen_adapter *adapter, u32);
int netxen_config_intr_coalesce(struct netxen_adapter *adapter);
int netxen_config_rss(struct netxen_adapter *adapter, int enable);
int netxen_linkevent_request(struct netxen_adapter *adapter, int enable);
void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup);

int nx_fw_cmd_set_mtu(struct netxen_adapter *adapter, int mtu);
int netxen_nic_change_mtu(struct net_device *netdev, int new_mtu);

int netxen_nic_set_mac(struct net_device *netdev, void *p);
struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev);

void netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
		struct nx_host_tx_ring *tx_ring);

/*
 * NetXen Board information
 */

#define NETXEN_MAX_SHORT_NAME 32
struct netxen_brdinfo {
	int brdtype;	/* type of board */
	long ports;		/* max no of physical ports */
	char short_name[NETXEN_MAX_SHORT_NAME];
};

static const struct netxen_brdinfo netxen_boards[] = {
	{NETXEN_BRDTYPE_P2_SB31_10G_CX4, 1, "XGb CX4"},
	{NETXEN_BRDTYPE_P2_SB31_10G_HMEZ, 1, "XGb HMEZ"},
	{NETXEN_BRDTYPE_P2_SB31_10G_IMEZ, 2, "XGb IMEZ"},
	{NETXEN_BRDTYPE_P2_SB31_10G, 1, "XGb XFP"},
	{NETXEN_BRDTYPE_P2_SB35_4G, 4, "Quad Gb"},
	{NETXEN_BRDTYPE_P2_SB31_2G, 2, "Dual Gb"},
	{NETXEN_BRDTYPE_P3_REF_QG,  4, "Reference Quad Gig "},
	{NETXEN_BRDTYPE_P3_HMEZ,    2, "Dual XGb HMEZ"},
	{NETXEN_BRDTYPE_P3_10G_CX4_LP,   2, "Dual XGb CX4 LP"},
	{NETXEN_BRDTYPE_P3_4_GB,    4, "Quad Gig LP"},
	{NETXEN_BRDTYPE_P3_IMEZ,    2, "Dual XGb IMEZ"},
	{NETXEN_BRDTYPE_P3_10G_SFP_PLUS, 2, "Dual XGb SFP+ LP"},
	{NETXEN_BRDTYPE_P3_10000_BASE_T, 1, "XGB 10G BaseT LP"},
	{NETXEN_BRDTYPE_P3_XG_LOM,  2, "Dual XGb LOM"},
	{NETXEN_BRDTYPE_P3_4_GB_MM, 4, "NX3031 Gigabit Ethernet"},
	{NETXEN_BRDTYPE_P3_10G_SFP_CT, 2, "NX3031 10 Gigabit Ethernet"},
	{NETXEN_BRDTYPE_P3_10G_SFP_QT, 2, "Quanta Dual XGb SFP+"},
	{NETXEN_BRDTYPE_P3_10G_CX4, 2, "Reference Dual CX4 Option"},
	{NETXEN_BRDTYPE_P3_10G_XFP, 1, "Reference Single XFP Option"}
};

#define NUM_SUPPORTED_BOARDS ARRAY_SIZE(netxen_boards)

static inline void get_brd_name_by_type(u32 type, char *name)
{
	int i, found = 0;
	for (i = 0; i < NUM_SUPPORTED_BOARDS; ++i) {
		if (netxen_boards[i].brdtype == type) {
			strcpy(name, netxen_boards[i].short_name);
			found = 1;
			break;
		}

	}
	if (!found)
		name = "Unknown";
}

static inline int
dma_watchdog_shutdown_request(struct netxen_adapter *adapter)
{
	u32 ctrl;

	/* check if already inactive */
	ctrl = adapter->hw_read_wx(adapter,
			NETXEN_CAM_RAM(NETXEN_CAM_RAM_DMA_WATCHDOG_CTRL));

	if (netxen_get_dma_watchdog_enabled(ctrl) == 0)
		return 1;

	/* Send the disable request */
	netxen_set_dma_watchdog_disable_req(ctrl);
	NXWR32(adapter, NETXEN_CAM_RAM(NETXEN_CAM_RAM_DMA_WATCHDOG_CTRL), ctrl);

	return 0;
}

static inline int
dma_watchdog_shutdown_poll_result(struct netxen_adapter *adapter)
{
	u32 ctrl;

	ctrl = adapter->hw_read_wx(adapter,
			NETXEN_CAM_RAM(NETXEN_CAM_RAM_DMA_WATCHDOG_CTRL));

	return (netxen_get_dma_watchdog_enabled(ctrl) == 0);
}

static inline int
dma_watchdog_wakeup(struct netxen_adapter *adapter)
{
	u32 ctrl;

	ctrl = adapter->hw_read_wx(adapter,
			NETXEN_CAM_RAM(NETXEN_CAM_RAM_DMA_WATCHDOG_CTRL));

	if (netxen_get_dma_watchdog_enabled(ctrl))
		return 1;

	/* send the wakeup request */
	netxen_set_dma_watchdog_enable_req(ctrl);

	NXWR32(adapter, NETXEN_CAM_RAM(NETXEN_CAM_RAM_DMA_WATCHDOG_CTRL), ctrl);

	return 0;
}


static inline u32 netxen_tx_avail(struct nx_host_tx_ring *tx_ring)
{
	smp_mb();
	return find_diff_among(tx_ring->producer,
			tx_ring->sw_consumer, tx_ring->num_desc);

}

int netxen_get_flash_mac_addr(struct netxen_adapter *adapter, __le64 *mac);
int netxen_p3_get_mac_addr(struct netxen_adapter *adapter, __le64 *mac);
extern void netxen_change_ringparam(struct netxen_adapter *adapter);
extern int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr,
				int *valp);

extern struct ethtool_ops netxen_nic_ethtool_ops;

#endif				/* __NETXEN_NIC_H_ */