sys/dev/tc/sticio.h

   1 /*      $NetBSD: sticio.h,v 1.3 2005/12/11 12:24:00 christos Exp $      */
   2
   3 /*-
   4  * Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Andrew Doran.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _TC_STICIO_H_
  33 #define _TC_STICIO_H_
  34
  35 /*
  36  * Buffer sizes.  Image buffers (span buffers, really) must be able to hold
  37  * 1280 32-bit pixels, even for the 8-bit boards.
  38  */
  39 #define STIC_XCOMM_SIZE         4096
  40 #define STIC_PACKET_SIZE        4096
  41 #define STIC_IMGBUF_SIZE        1280*4
  42
  43 /*
  44  * stic_xinfo: info about the board that can't be gleaned using the generic
  45  * wscons interfaces.
  46  */
  47 struct stic_xinfo {
  48         int     sxi_stampw;             /* stamp width */
  49         int     sxi_stamph;             /* stamp height */
  50         int     sxi_unit;               /* control device unit (-1 == none) */
  51         u_int   sxi_buf_size;           /* total buffer size in bytes */
  52         u_int   sxi_buf_phys;           /* buffer PA (STIC address space) */
  53         u_int   sxi_buf_pktoff;         /* offset to packet buffers */
  54         u_int   sxi_buf_pktcnt;         /* packet buffer count */
  55         u_int   sxi_buf_imgoff;         /* offset to image buffers */
  56 };
  57
  58 /*
  59  * stic_xcomm: Xserver communication area.  Used to communicate with the
  60  * kernel or i860 firmware when performing packet queueing or other such
  61  * funkiness.
  62  */
  63 struct stic_xcomm {
  64         u_int   sxc_head;               /* Xserver submit pointer */
  65         u_int   sxc_tail;               /* STIC execute pointer */
  66         u_int   sxc_nreject;            /* number of rejected STIC polls */
  67         u_int   sxc_nstall;             /* number of queue stalls */
  68         u_int   sxc_busy;               /* true if STIC is busy */
  69         u_int   sxc_reserved[8];        /* reserved for future use */
  70         u_int   sxc_done[16];           /* packet completion semaphores */
  71 };
  72
  73 /*
  74  * stic_xmap: a description of the area returned by mapping the board.
  75  * sxm_xcomm and sxm_buf are physically contigious and of variable size as a
  76  * whole; the combined size is learnt from stic_xinfo::sxi_buf_size.
  77  */
  78 struct stic_xmap {
  79         u_int8_t        sxm_stic[NBPG];                 /* STIC registers */
  80         u_int8_t        sxm_poll[0xc0000];              /* poll registers */
  81         u_int8_t        sxm_xcomm[256 * 1024];          /* X comms area */
  82 };
  83
  84 /*
  85  * ioctl interface.
  86  */
  87 #define STICIO_GXINFO   _IOR('S', 0, struct stic_xinfo)
  88 #define STICIO_RESET    _IO('S', 1)
  89 #define STICIO_START860 _IO('S', 2)     /* PXG only, may disappear */
  90 #define STICIO_RESET860 _IO('S', 3)     /* PXG only, may disappear */
  91 #define STICIO_STARTQ   _IO('S', 4)     /* currently PX only */
  92 #define STICIO_STOPQ    _IO('S', 5)     /* currently PX only */
  93
  94 #endif  /* !_TC_STICIO_H_ */