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sticio.h revision 1.3.70.1 
      1 /* 	$NetBSD: sticio.h,v 1.3.70.1 2008/06/02 13:23:52 mjf 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_ */
     95