freebsd-dev/sys/dev/ixgb/if_ixgb.h

/*******************************************************************************

Copyright (c) 2001-2004, Intel Corporation
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

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    this list of conditions and the following disclaimer.

 2. Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
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 3. Neither the name of the Intel Corporation nor the names of its
    contributors may be used to endorse or promote products derived from
    this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

***************************************************************************/
/*$FreeBSD$*/

#ifndef _IXGB_H_DEFINED_
#define _IXGB_H_DEFINED_


#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/kernel.h>
#include <sys/sockio.h>

#include <net/if.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>

#include <net/bpf.h>
#include <net/if_types.h>
#include <net/if_vlan_var.h>

#include <netinet/in_systm.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <netinet/udp.h>

#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#if __FreeBSD_version >= 502000
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#else
#include <pci/pcivar.h>
#include <pci/pcireg.h>
#endif
#include <sys/proc.h>
#include <sys/sysctl.h>
#include <sys/endian.h>

#include <dev/ixgb/ixgb_hw.h>
#include <dev/ixgb/ixgb_ee.h>
#include <dev/ixgb/ixgb_ids.h>

/* Tunables */

/*
 * TxDescriptors Valid Range: 64-4096 Default Value: 256 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.
 */
#define IXGB_MAX_TXD                      256

/*
 * RxDescriptors Valid Range: 64-4096 Default Value: 1024 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.
 * 
 */
#define IXGB_MAX_RXD                     1024

/*
 * TxIntDelay Valid Range: 0-65535 (0=off) Default Value: 32 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 TIDV 32

/*
 * RxIntDelay Valid Range: 0-65535 (0=off) Default Value: 72 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.
 * 
 */
#define RDTR 72


/*
 * This parameter controls the maximum no of times the driver will loop in
 * the isr. Minimum Value = 1
 */
#define IXGB_MAX_INTR                     3


/*
 * Inform the stack about transmit checksum offload capabilities.
 */
#define IXGB_CHECKSUM_FEATURES            (CSUM_TCP | CSUM_UDP)

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

/*
 * This parameter controls when the driver calls the routine to reclaim
 * transmit descriptors.
 */
#define IXGB_TX_CLEANUP_THRESHOLD         IXGB_MAX_TXD / 8

/* 
 * Flow Control Types. 
 * 1. ixgb_fc_none - Flow Control Disabled 
 * 2. ixgb_fc_rx_pause - Flow Control Receive Only
 * 3. ixgb_fc_tx_pause - Flow Control Transmit Only
 * 4. ixgb_fc_full - Flow Control Enabled
 */
#define FLOW_CONTROL_NONE    	ixgb_fc_none 
#define FLOW_CONTROL_RX_PAUSE   ixgb_fc_rx_pause
#define FLOW_CONTROL_TX_PAUSE   ixgb_fc_tx_pause
#define FLOW_CONTROL_FULL       ixgb_fc_full

/*
 * Set the flow control type. Assign one of the above flow control types to be enabled.
 * Default Value: FLOW_CONTROL_FULL   
 */    
#define FLOW_CONTROL	        FLOW_CONTROL_FULL

/*
 * Receive Flow control low threshold (when we send a resume frame) (FCRTL)
 * Valid Range: 64 - 262,136 (0x40 - 0x3FFF8, 8 byte granularity) must be
 * less than high threshold by at least 8 bytes Default Value:  163,840
 * (0x28000)
 */
#define FCRTL                   0x28000

/*
 * Receive Flow control high threshold (when we send a pause frame) (FCRTH)
 * Valid Range: 1,536 - 262,136 (0x600 - 0x3FFF8, 8 byte granularity) Default
 * Value: 196,608 (0x30000)
 */
#define FCRTH                   0x30000

/*
 * Flow control request timeout (how long to pause the link partner's tx)
 * (PAP 15:0) Valid Range: 1 - 65535 Default Value:  256 (0x100)
 */
#define FCPAUSE		     0x100

/* Tunables -- End */


#define IXGB_VENDOR_ID                    0x8086
#define IXGB_MMBA                         0x0010	/* Mem base address */
#define IXGB_ROUNDUP(size, unit) (((size) + (unit) - 1) & ~((unit) - 1))

#define IOCTL_CMD_TYPE                  u_long
#define MAX_NUM_MULTICAST_ADDRESSES     128
#define PCI_ANY_ID                      (~0U)
#define ETHER_ALIGN                     2

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


/* Supported RX Buffer Sizes */
#define IXGB_RXBUFFER_2048        2048
#define IXGB_RXBUFFER_4096        4096
#define IXGB_RXBUFFER_8192        8192
#define IXGB_RXBUFFER_16384      16384

#define IXGB_MAX_SCATTER           100

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


struct ixgb_buffer {
	struct mbuf    *m_head;
	bus_dmamap_t    map;	/* bus_dma map for packet */
};

/*
 * Bus dma allocation structure used by ixgb_dma_malloc and ixgb_dma_free.
 */
struct ixgb_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;
	bus_size_t      dma_size;
	int             dma_nseg;
};

typedef enum _XSUM_CONTEXT_T {
	OFFLOAD_NONE,
	OFFLOAD_TCP_IP,
	OFFLOAD_UDP_IP
}               XSUM_CONTEXT_T;

/* Our adapter structure */
struct adapter {
	struct ifnet   *ifp;
	struct adapter *next;
	struct adapter *prev;
	struct ixgb_hw  hw;

	/* FreeBSD operating-system-specific structures */
	struct ixgb_osdep osdep;
	struct device  *dev;
	struct resource *res_memory;
	struct resource *res_ioport;
	struct resource *res_interrupt;
	void           *int_handler_tag;
	struct ifmedia  media;
	struct callout 	timer;
	int             io_rid;
	u_int8_t        unit;
	struct mtx	mtx;

	/* Info about the board itself */
	u_int32_t       part_num;
	u_int8_t        link_active;
	u_int16_t       link_speed;
	u_int16_t       link_duplex;
	u_int32_t       tx_int_delay;
	u_int32_t       tx_abs_int_delay;
	u_int32_t       rx_int_delay;
	u_int32_t       rx_abs_int_delay;

	int             raidc;

	XSUM_CONTEXT_T  active_checksum_context;

	/*
	 * Transmit definitions
	 * 
	 * We have an array of num_tx_desc descriptors (handled by the
	 * controller) paired with an array of tx_buffers (at
	 * tx_buffer_area). The index of the next available descriptor is
	 * next_avail_tx_desc. The number of remaining tx_desc is
	 * num_tx_desc_avail.
	 */
	struct ixgb_dma_alloc txdma;	/* bus_dma glue for tx desc */
	struct ixgb_tx_desc *tx_desc_base;
	u_int32_t       next_avail_tx_desc;
	u_int32_t       oldest_used_tx_desc;
	                volatile u_int16_t num_tx_desc_avail;
	u_int16_t       num_tx_desc;
	u_int32_t       txd_cmd;
	struct ixgb_buffer *tx_buffer_area;
	bus_dma_tag_t   txtag;	/* dma tag for tx */

	/*
	 * Receive definitions
	 * 
	 * we have an array of num_rx_desc rx_desc (handled by the controller),
	 * and paired with an array of rx_buffers (at rx_buffer_area). The
	 * next pair to check on receive is at offset next_rx_desc_to_check
	 */
	struct ixgb_dma_alloc rxdma;	/* bus_dma glue for rx desc */
	struct ixgb_rx_desc *rx_desc_base;
	u_int32_t       next_rx_desc_to_check;
	u_int16_t       num_rx_desc;
	u_int32_t       rx_buffer_len;
	struct ixgb_buffer *rx_buffer_area;
	bus_dma_tag_t   rxtag;	/* dma tag for Rx */
	u_int32_t       next_rx_desc_to_use;


	/* Jumbo frame */
	struct mbuf    *fmp;
	struct mbuf    *lmp;

	struct sysctl_ctx_list sysctl_ctx;
	struct sysctl_oid *sysctl_tree;

	/* Misc stats maintained by the driver */
	unsigned long   dropped_pkts;
	unsigned long   mbuf_alloc_failed;
	unsigned long   mbuf_cluster_failed;
	unsigned long   no_tx_desc_avail1;
	unsigned long   no_tx_desc_avail2;
	unsigned long   no_tx_map_avail;
	unsigned long   no_tx_dma_setup;

	boolean_t       in_detach;

	/* Board specific private data */
#ifdef _SV_
	struct ixgb_sv_stats {
		uint64_t        icr_rxdmt0;
		uint64_t        icr_rxo;
		uint64_t        icr_rxt0;
		uint64_t        icr_TXDW;
	}               sv_stats;
	unsigned long   no_pkts_avail;
	unsigned long   clean_tx_interrupts;
#endif

	struct ixgb_hw_stats stats;
};

#define IXGB_LOCK_INIT(_sc, _name) \
	mtx_init(&(_sc)->mtx, _name, MTX_NETWORK_LOCK, MTX_DEF)
#define IXGB_LOCK_DESTROY(_sc)	mtx_destroy(&(_sc)->mtx)
#define IXGB_LOCK(_sc)		mtx_lock(&(_sc)->mtx)
#define IXGB_UNLOCK(_sc)	mtx_unlock(&(_sc)->mtx)
#define IXGB_LOCK_ASSERT(_sc)	mtx_assert(&(_sc)->mtx, MA_OWNED)

#endif				/* _IXGB_H_DEFINED_ */