dev/e1000/if_igb.h

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/*$FreeBSD: head/sys/dev/e1000/if_igb.h 183714 2008-10-09 02:25:18Z peter $*/

#ifndef _IGB_H_DEFINED_
#define _IGB_H_DEFINED_

/* Tunables */

/*
 * IGB_TXD: Maximum number of Transmit Descriptors
 *
 *   This value is the number of transmit descriptors allocated by the driver.
 *   Increasing this value allows the driver to queue more transmits. Each
 *   descriptor is 16 bytes.
 *   Since TDLEN should be multiple of 128bytes, the number of transmit
 *   desscriptors should meet the following condition.
 *      (num_tx_desc * sizeof(struct e1000_tx_desc)) % 128 == 0
 */
#define IGB_MIN_TXD		80
#define IGB_DEFAULT_TXD		256
#define IGB_MAX_TXD		4096

/*
 * IGB_RXD: Maximum number of Transmit Descriptors
 *
 *   This value is the number of receive descriptors allocated by the driver.
 *   Increasing this value allows the driver to buffer more incoming packets.
 *   Each descriptor is 16 bytes.  A receive buffer is also allocated for each
 *   descriptor. The maximum MTU size is 16110.
 *   Since TDLEN should be multiple of 128bytes, the number of transmit
 *   desscriptors should meet the following condition.
 *      (num_tx_desc * sizeof(struct e1000_tx_desc)) % 128 == 0
 */
#define IGB_MIN_RXD		80
#define IGB_DEFAULT_RXD		256
#define IGB_MAX_RXD		4096

/*
 * IGB_TIDV - Transmit Interrupt Delay Value
 * Valid Range: 0-65535 (0=off)
 * Default Value: 64
 *   This value delays the generation of transmit interrupts in units of
 *   1.024 microseconds. Transmit interrupt reduction can improve CPU
 *   efficiency if properly tuned for specific network traffic. If the
 *   system is reporting dropped transmits, this value may be set too high
 *   causing the driver to run out of available transmit descriptors.
 */
#define IGB_TIDV                         64

/*
 * IGB_TADV - Transmit Absolute Interrupt Delay Value
 * Valid Range: 0-65535 (0=off)
 * Default Value: 64
 *   This value, in units of 1.024 microseconds, limits the delay in which a
 *   transmit interrupt is generated. Useful only if IGB_TIDV is non-zero,
 *   this value ensures that an interrupt is generated after the initial
 *   packet is sent on the wire within the set amount of time.  Proper tuning,
 *   along with IGB_TIDV, may improve traffic throughput in specific
 *   network conditions.
 */
#define IGB_TADV                         64

/*
 * IGB_RDTR - Receive Interrupt Delay Timer (Packet Timer)
 * Valid Range: 0-65535 (0=off)
 * Default Value: 0
 *   This value delays the generation of receive interrupts in units of 1.024
 *   microseconds.  Receive interrupt reduction can improve CPU efficiency if
 *   properly tuned for specific network traffic. Increasing this value adds
 *   extra latency to frame reception and can end up decreasing the throughput
 *   of TCP traffic. If the system is reporting dropped receives, this value
 *   may be set too high, causing the driver to run out of available receive
 *   descriptors.
 *
 *   CAUTION: When setting IGB_RDTR to a value other than 0, adapters
 *            may hang (stop transmitting) under certain network conditions.
 *            If this occurs a WATCHDOG message is logged in the system
 *            event log. In addition, the controller is automatically reset,
 *            restoring the network connection. To eliminate the potential
 *            for the hang ensure that IGB_RDTR is set to 0.
 */
#define IGB_RDTR                         0

/*
 * Receive Interrupt Absolute Delay Timer (Not valid for 82542/82543/82544)
 * Valid Range: 0-65535 (0=off)
 * Default Value: 64
 *   This value, in units of 1.024 microseconds, limits the delay in which a
 *   receive interrupt is generated. Useful only if IGB_RDTR is non-zero,
 *   this value ensures that an interrupt is generated after the initial
 *   packet is received within the set amount of time.  Proper tuning,
 *   along with IGB_RDTR, may improve traffic throughput in specific network
 *   conditions.
 */
#define IGB_RADV                         64

/*
 * This parameter controls the duration of transmit watchdog timer.
 */
#define IGB_TX_TIMEOUT                   5    /* set to 5 seconds */

/*
 * This parameter controls when the driver calls the routine to reclaim
 * transmit descriptors.
 */
#define IGB_TX_CLEANUP_THRESHOLD	(adapter->num_tx_desc / 8)
#define IGB_TX_OP_THRESHOLD	(adapter->num_tx_desc / 32)

/*
 * This parameter controls whether or not autonegotation is enabled.
 *              0 - Disable autonegotiation
 *              1 - Enable  autonegotiation
 */
#define DO_AUTO_NEG                     1

/*
 * This parameter control whether or not the driver will wait for
 * autonegotiation to complete.
 *              1 - Wait for autonegotiation to complete
 *              0 - Don't wait for autonegotiation to complete
 */
#define WAIT_FOR_AUTO_NEG_DEFAULT       0

/* Tunables -- End */

#define AUTONEG_ADV_DEFAULT	(ADVERTISE_10_HALF | ADVERTISE_10_FULL | \
				ADVERTISE_100_HALF | ADVERTISE_100_FULL | \
				ADVERTISE_1000_FULL)

#define AUTO_ALL_MODES		0

/* PHY master/slave setting */
#define IGB_MASTER_SLAVE		e1000_ms_hw_default

/*
 * Micellaneous constants
 */
#define IGB_VENDOR_ID			0x8086

#define IGB_JUMBO_PBA			0x00000028
#define IGB_DEFAULT_PBA			0x00000030
#define IGB_SMARTSPEED_DOWNSHIFT	3
#define IGB_SMARTSPEED_MAX		15
#define IGB_MAX_INTR			10
#define IGB_RX_PTHRESH			16
#define IGB_RX_HTHRESH			8
#define IGB_RX_WTHRESH			1

#define MAX_NUM_MULTICAST_ADDRESSES     128
#define PCI_ANY_ID                      (~0U)
#define ETHER_ALIGN                     2
#define IGB_TX_BUFFER_SIZE		((uint32_t) 1514)
#define IGB_FC_PAUSE_TIME		0x0680
#define IGB_EEPROM_APME			0x400;

#define MAX_INTS_PER_SEC	8000
#define DEFAULT_ITR		1000000000/(MAX_INTS_PER_SEC * 256)

/* Code compatilbility between 6 and 7 */
#ifndef ETHER_BPF_MTAP
#define ETHER_BPF_MTAP			BPF_MTAP
#endif

/*
 * TDBA/RDBA should be aligned on 16 byte boundary. But TDLEN/RDLEN should be
 * multiple of 128 bytes. So we align TDBA/RDBA on 128 byte boundary. This will
 * also optimize cache line size effect. H/W supports up to cache line size 128.
 */
#define IGB_DBA_ALIGN			128

#define SPEED_MODE_BIT (1<<21)		/* On PCI-E MACs only */

/* PCI Config defines */
#define IGB_MSIX_BAR		3

/*
** This is the total number of MSIX vectors you wish
** to use, it also controls the size of resources.
** The 82575 has a total of 10, 82576 has 25. Set this
** to the real amount you need to streamline data storage.
*/
#define IGB_MSIX_VEC		6	/* MSIX vectors configured */

/* Defines for printing debug information */
#define DEBUG_INIT  0
#define DEBUG_IOCTL 0
#define DEBUG_HW    0

#define INIT_DEBUGOUT(S)            if (DEBUG_INIT)  printf(S "\n")
#define INIT_DEBUGOUT1(S, A)        if (DEBUG_INIT)  printf(S "\n", A)
#define INIT_DEBUGOUT2(S, A, B)     if (DEBUG_INIT)  printf(S "\n", A, B)
#define IOCTL_DEBUGOUT(S)           if (DEBUG_IOCTL) printf(S "\n")
#define IOCTL_DEBUGOUT1(S, A)       if (DEBUG_IOCTL) printf(S "\n", A)
#define IOCTL_DEBUGOUT2(S, A, B)    if (DEBUG_IOCTL) printf(S "\n", A, B)
#define HW_DEBUGOUT(S)              if (DEBUG_HW) printf(S "\n")
#define HW_DEBUGOUT1(S, A)          if (DEBUG_HW) printf(S "\n", A)
#define HW_DEBUGOUT2(S, A, B)       if (DEBUG_HW) printf(S "\n", A, B)

#define IGB_MAX_SCATTER		64
#define IGB_TSO_SIZE		(65535 + sizeof(struct ether_vlan_header))
#define IGB_TSO_SEG_SIZE	4096	/* Max dma segment size */
#define ETH_ZLEN		60
#define ETH_ADDR_LEN		6
#define CSUM_OFFLOAD		7	/* Offload bits in mbuf flag */

/*
 * Interrupt Moderation parameters
 */
#define IGB_LOW_LATENCY         128
#define IGB_AVE_LATENCY         450
#define IGB_BULK_LATENCY        1200
#define IGB_LINK_ITR            2000

#ifdef IGB_TIMESYNC
/* Precision Time Sync (IEEE 1588) defines */
#define ETHERTYPE_IEEE1588	0x88F7
#define PICOSECS_PER_TICK	20833
#define TSYNC_PORT		319 /* UDP port for the protocol */

/* TIMESYNC IOCTL defines */
#define IGB_TIMESYNC_READTS	_IOWR('i', 127, struct igb_tsync_read)
#define IGB_TIMESTAMP		5	/* A unique return value */

/* Used in the READTS IOCTL */
struct igb_tsync_read {
	int read_current_time;
	struct timespec system_time;
	u64 network_time;
	u64 rx_stamp;
	u64 tx_stamp;
	u16 seqid;
	unsigned char srcid[6];
	int rx_valid;
	int tx_valid;
};

#endif /* IGB_TIMESYNC */

struct adapter; /* forward reference */

struct igb_int_delay_info {
	struct adapter *adapter;	/* Back-pointer to the adapter struct */
	int offset;			/* Register offset to read/write */
	int value;			/* Current value in usecs */
};

/*
 * Bus dma allocation structure used by
 * e1000_dma_malloc and e1000_dma_free.
 */
struct igb_dma_alloc {
        bus_addr_t              dma_paddr;
        caddr_t                 dma_vaddr;
        bus_dma_tag_t           dma_tag;
        bus_dmamap_t            dma_map;
        bus_dma_segment_t       dma_seg;
        int                     dma_nseg;
};


/*
 * Transmit ring: one per tx queue
 */
struct tx_ring {
	struct adapter		*adapter;
	u32			me;
	u32			msix;		/* This ring's MSIX vector */
	u32			eims;		/* This ring's EIMS bit */
	struct mtx		tx_mtx;
	char			mtx_name[16];
	struct igb_dma_alloc	txdma;		/* bus_dma glue for tx desc */
	struct e1000_tx_desc	*tx_base;
	struct task		tx_task;	/* cleanup tasklet */
	u32			next_avail_desc;
	u32			next_to_clean;
	volatile u16		tx_avail;
	struct igb_buffer	*tx_buffers;
	bus_dma_tag_t		txtag;		/* dma tag for tx */
	u32			watchdog_timer;
	u64			no_desc_avail;
	u64			tx_irq;
	u64			tx_packets;
};

/*
 * Receive ring: one per rx queue
 */
struct rx_ring {
	struct adapter		*adapter;
	u32			me;
	u32			msix;		/* This ring's MSIX vector */
	u32			eims;		/* This ring's EIMS bit */
	struct igb_dma_alloc	rxdma;		/* bus_dma glue for tx desc */
	union e1000_adv_rx_desc	*rx_base;
	struct lro_ctrl		lro;
	struct task		rx_task;	/* cleanup tasklet */
	struct mtx		rx_mtx;
	char			mtx_name[16];
	u32			last_cleaned;
	u32			next_to_check;
	struct igb_buffer	*rx_buffers;
	bus_dma_tag_t		rxtag;		/* dma tag for tx */
	bus_dmamap_t		rx_spare_map;
	/*
	 * First/last mbuf pointers, for
	 * collecting multisegment RX packets.
	 */
	struct mbuf	       *fmp;
	struct mbuf	       *lmp;

	u32			bytes;
	u32			eitr_setting;

	/* Soft stats */
	u64			rx_irq;
	u64			rx_packets;
	u64			rx_bytes;
};

struct adapter {
	struct ifnet	*ifp;
	struct e1000_hw	hw;

	/* FreeBSD operating-system-specific structures. */
	struct e1000_osdep osdep;
	struct device	*dev;

	struct resource *pci_mem;
	struct resource *msix_mem;
	struct resource	*res[IGB_MSIX_VEC];
	void		*tag[IGB_MSIX_VEC];
	int		rid[IGB_MSIX_VEC];
	u32		eims_mask;

	int		linkvec;
	int		link_mask;
	int		link_irq;

	struct ifmedia	media;
	struct callout	timer;
	int		msix;	/* total vectors allocated */
	int		if_flags;
	int		max_frame_size;
	int		min_frame_size;
	struct mtx	core_mtx;
	int		igb_insert_vlan_header;
	struct task     link_task;
	struct task     rxtx_task;
	struct taskqueue *tq;           /* private task queue */
	eventhandler_tag vlan_attach;
	eventhandler_tag vlan_detach;
	/* Management and WOL features */
	int		wol;
	int		has_manage;

	/* Info about the board itself */
	u8		link_active;
	u16		link_speed;
	u16		link_duplex;
	u32		smartspeed;

	/*
	 * Transmit rings
	 */
	struct tx_ring		*tx_rings;
        u16			num_tx_desc;
        u16			num_tx_queues;
        u32			txd_cmd;

	/*
	 * Receive rings
	 */
	struct rx_ring		*rx_rings;
        u16			num_rx_desc;
        u16			num_rx_queues;
	int			rx_process_limit;
	u32			rx_buffer_len;

	/* Misc stats maintained by the driver */
	unsigned long	dropped_pkts;
	unsigned long	mbuf_alloc_failed;
	unsigned long	mbuf_cluster_failed;
	unsigned long	no_tx_map_avail;
        unsigned long	no_tx_dma_setup;
	unsigned long	watchdog_events;
	unsigned long	rx_overruns;

	boolean_t       in_detach;

#ifdef IGB_TIMESYNC
	u64		last_stamp;
	u64		last_sec;
	u32		last_ns;
#endif

	struct e1000_hw_stats stats;
};

/* ******************************************************************************
 * vendor_info_array
 *
 * This array contains the list of Subvendor/Subdevice IDs on which the driver
 * should load.
 *
 * ******************************************************************************/
typedef struct _igb_vendor_info_t {
	unsigned int vendor_id;
	unsigned int device_id;
	unsigned int subvendor_id;
	unsigned int subdevice_id;
	unsigned int index;
} igb_vendor_info_t;


struct igb_buffer {
	int		next_eop;  /* Index of the desc to watch */
        struct mbuf    *m_head;
        bus_dmamap_t    map;         /* bus_dma map for packet */
};

#define	IGB_CORE_LOCK_INIT(_sc, _name) \
	mtx_init(&(_sc)->core_mtx, _name, "IGB Core Lock", MTX_DEF)
#define	IGB_CORE_LOCK_DESTROY(_sc)	mtx_destroy(&(_sc)->core_mtx)
#define	IGB_TX_LOCK_DESTROY(_sc)		mtx_destroy(&(_sc)->tx_mtx)
#define	IGB_RX_LOCK_DESTROY(_sc)		mtx_destroy(&(_sc)->rx_mtx)
#define	IGB_CORE_LOCK(_sc)		mtx_lock(&(_sc)->core_mtx)
#define	IGB_TX_LOCK(_sc)			mtx_lock(&(_sc)->tx_mtx)
#define	IGB_RX_LOCK(_sc)			mtx_lock(&(_sc)->rx_mtx)
#define	IGB_CORE_UNLOCK(_sc)		mtx_unlock(&(_sc)->core_mtx)
#define	IGB_TX_UNLOCK(_sc)		mtx_unlock(&(_sc)->tx_mtx)
#define	IGB_RX_UNLOCK(_sc)		mtx_unlock(&(_sc)->rx_mtx)
#define	IGB_CORE_LOCK_ASSERT(_sc)	mtx_assert(&(_sc)->core_mtx, MA_OWNED)
#define	IGB_TX_LOCK_ASSERT(_sc)		mtx_assert(&(_sc)->tx_mtx, MA_OWNED)

#endif /* _IGB_H_DEFINED_ */