FreeBSD/Linux Kernel Cross Reference
sys/dev/tc/sticio.h

     /*      $NetBSD: sticio.h,v 1.1 2001/09/18 19:51:23 ad Exp $    */
     
     /*-
      * Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Andrew Doran.
      *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, 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
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the NetBSD
     *      Foundation, Inc. and its contributors.
     * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION OR CONTRIBUTORS
     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    
    #ifndef _TC_STICIO_H_
    #define _TC_STICIO_H_
    
    /*
     * Buffer sizes.  Image buffers (span buffers, really) must be able to hold
     * 1280 32-bit pixels, even for the 8-bit boards.
     */
    #define STIC_XCOMM_SIZE         4096
    #define STIC_PACKET_SIZE        4096
    #define STIC_IMGBUF_SIZE        1280*4
    
    /*
     * stic_xinfo: info about the board that can't be gleaned using the generic
     * wscons interfaces.
     */
    struct stic_xinfo {
            int     sxi_stampw;             /* stamp width */
            int     sxi_stamph;             /* stamp height */
            int     sxi_unit;               /* control device unit (-1 == none) */
            u_int   sxi_buf_size;           /* total buffer size in bytes */
            u_int   sxi_buf_phys;           /* buffer PA (STIC address space) */
            u_int   sxi_buf_pktoff;         /* offset to packet buffers */
            u_int   sxi_buf_pktcnt;         /* packet buffer count */
            u_int   sxi_buf_imgoff;         /* offset to image buffers */
    };
    
    /*
     * stic_xcomm: Xserver communication area.  Used to communicate with the
     * kernel or i860 firmware when performing packet queueing or other such
     * funkiness.
     */
    struct stic_xcomm {
            u_int   sxc_head;               /* Xserver submit pointer */
            u_int   sxc_tail;               /* STIC execute pointer */
            u_int   sxc_nreject;            /* number of rejected STIC polls */
            u_int   sxc_nstall;             /* number of queue stalls */
            u_int   sxc_busy;               /* true if STIC is busy */
            u_int   sxc_reserved[8];        /* reserved for future use */
            u_int   sxc_done[16];           /* packet completion semaphores */
    };
    
    /*
     * stic_xmap: a description of the area returned by mapping the board. 
     * sxm_xcomm and sxm_buf are physically contigious and of variable size as a
     * whole; the combined size is learnt from stic_xinfo::sxi_buf_size.
     */
    struct stic_xmap {
            u_int8_t        sxm_stic[NBPG];                 /* STIC registers */
            u_int8_t        sxm_poll[0xc0000];              /* poll registers */
            u_int8_t        sxm_xcomm[256 * 1024];          /* X comms area */
    };
    
    /*
     * ioctl interface.
     */
    #define STICIO_GXINFO   _IOR('S', 0, struct stic_xinfo)
    #define STICIO_RESET    _IO('S', 1)
    #define STICIO_START860 _IO('S', 2)     /* PXG only, may disappear */
    #define STICIO_RESET860 _IO('S', 3)     /* PXG only, may disappear */
    #define STICIO_STARTQ   _IO('S', 4)     /* currently PX only */
    #define STICIO_STOPQ    _IO('S', 5)     /* currently PX only */
   
   #endif  /* !_TC_STICIO_H_ */

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