FreeBSD/Linux Kernel Cross Reference
sys/dev/hfa/fore.h

     /*
      *
      * ===================================
      * HARP  |  Host ATM Research Platform
      * ===================================
      *
      *
      * This Host ATM Research Platform ("HARP") file (the "Software") is
      * made available by Network Computing Services, Inc. ("NetworkCS")
     * "AS IS".  NetworkCS does not provide maintenance, improvements or
     * support of any kind.
     *
     * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
     * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
     * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
     * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
     * In no event shall NetworkCS be responsible for any damages, including
     * but not limited to consequential damages, arising from or relating to
     * any use of the Software or related support.
     *
     * Copyright 1994-1998 Network Computing Services, Inc.
     *
     * Copies of this Software may be made, however, the above copyright
     * notice must be reproduced on all copies.
     *
     *      @(#) $FreeBSD: releng/5.3/sys/dev/hfa/fore.h 78505 2001-06-20 17:09:14Z pirzyk $
     *
     */
    
    /*
     * FORE Systems 200-Series Adapter Support
     * ---------------------------------------
     *
     * Protocol and implementation definitions
     *
     */
    
    #ifndef _FORE_H
    #define _FORE_H
    
    #ifndef FORE_DEV_NAME
    #define FORE_DEV_NAME   "hfa"
    #endif
    
    #define FORE_MAX_UNITS  8       /* Maximum number of devices we support */
    #define FORE_MIN_UCODE  0x20300 /* Minimum microcode version we support */
    
    #define FORE_IFF_MTU    9188    /* Network interface MTU */
    #define FORE_MAX_VCC    1024    /* Maximum number of open VCCs */
    #define FORE_MAX_VPI    0       /* Maximum VPI value */
    #define FORE_MAX_VCI    1023    /* Maximum VCI value */
    #define FORE_DEF_RATE   0x00000000      /* Default rate control = disabled */
    
    #define XMIT_QUELEN     32      /* Length of transmit queue */
    #define RECV_QUELEN     32      /* Length of receive queue */
    #define CMD_QUELEN      8       /* Length of command queue */
    
    #define FORE_TIME_TICK  5       /* Watchdog timer tick (seconds) */
    #define FORE_WATCHDOG   3       /* Device watchdog timeout (ticks) */
    #define FORE_RECV_RETRY 3       /* Wait for receive queue entry retry count */
    #define FORE_RECV_DELAY 10      /* Wait for receive queue entry delay (usec) */
    
    
    /*
     * Receive Buffer strategies
     */
    #define BUF_MIN_VCC     4       /* Minimum for buffer supply calculations */
    
    #define BUF_DATA_ALIGN  4       /* Fore-required data alignment */
    
    /*
     * Strategy 1 Small - mbuf
     * Strategy 1 Large - cluster mbuf
     *
     * XXX buffer controls - the RECV_MAX_SEGS calculation comes out wrong
     * using the true buffer size values if the CP really only does full-cell
     * filling of a particular buffer - we must clarify this...it also appears
     * the minimum buffer size is 64, even if the CP can only fit in 1 cell.
     */
    #define SIZEOF_Buf_handle       16      /* XXX sizeof(Buf_handle) */
    
    #undef m_ext
    typedef struct m_ext    M_ext;
    #define m_ext           M_dat.MH.MH_dat.MH_ext
    #define BUF1_SM_HOFF    (sizeof(struct m_hdr))  /* Buffer-to-handle offset */
    #define BUF1_SM_HDR     (sizeof(struct m_hdr) + sizeof(struct pkthdr))
    #define BUF1_SM_LEN     (MHLEN)
    #define BUF1_LG_HOFF    (sizeof(struct m_hdr) + sizeof(struct pkthdr) \
                                + sizeof(M_ext))    /* Buffer-to-handle offset */
    /*
     * BUF1_SM_DOFF - CP data offset into buffer data space
     * BUF1_SM_SIZE - Buffer size
     *
     * These should be defined as follows, but we need compile-time constants:
     *
     *      #define BUF1_SM_DOFF (roundup(BUF1_SM_HOFF + SIZEOF_Buf_handle, 
     *                      BUF_DATA_ALIGN) - BUF1_SM_HDR)
     *      #define BUF1_SM_SIZE    MAX(BUF1_SM_LEN - BUF1_SM_DOFF, 64)
     *
    */
   #define BUF1_SM_DOFF    (SIZEOF_Buf_handle)
   #define BUF1_SM_SIZE    (BUF1_SM_LEN - BUF1_SM_DOFF)
   
   #define BUF1_SM_QUELEN  16      /* Entries in supply queue */
   #define BUF1_SM_CPPOOL  256     /* Buffers in CP-resident pool */
   #define BUF1_SM_ENTSIZE 8       /* Buffers in each supply queue entry */
   
   #define BUF1_LG_DOFF    0       /* CP data offset into mbuf data space */
   #define BUF1_LG_SIZE    MCLBYTES        /* Buffer size */
   #define BUF1_LG_QUELEN  16      /* Entries in supply queue */
   #define BUF1_LG_CPPOOL  512     /* Buffers in CP-resident pool */
   #define BUF1_LG_ENTSIZE 8       /* Buffers in each supply queue entry */
   
   #endif  /* _FORE_H */

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