1/* $NetBSD: sticio.h,v 1.5 2015/09/06 06:01:01 dholland 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#include <sys/ioccom.h>
36
37/*
38 * Buffer sizes. Image buffers (span buffers, really) must be able to hold
39 * 1280 32-bit pixels, even for the 8-bit boards.
40 */
41#define STIC_XCOMM_SIZE 4096
42#define STIC_PACKET_SIZE 4096
43#define STIC_IMGBUF_SIZE 1280*4
44
45/*
46 * stic_xinfo: info about the board that can't be gleaned using the generic
47 * wscons interfaces.
48 */
49struct stic_xinfo {
50 int sxi_stampw; /* stamp width */
51 int sxi_stamph; /* stamp height */
52 int sxi_unit; /* control device unit (-1 == none) */
53 u_int sxi_buf_size; /* total buffer size in bytes */
54 u_int sxi_buf_phys; /* buffer PA (STIC address space) */
55 u_int sxi_buf_pktoff; /* offset to packet buffers */
56 u_int sxi_buf_pktcnt; /* packet buffer count */
57 u_int sxi_buf_imgoff; /* offset to image buffers */
58};
59
60/*
61 * stic_xcomm: Xserver communication area. Used to communicate with the
62 * kernel or i860 firmware when performing packet queueing or other such
63 * funkiness.
64 */
65struct stic_xcomm {
66 u_int sxc_head; /* Xserver submit pointer */
67 u_int sxc_tail; /* STIC execute pointer */
68 u_int sxc_nreject; /* number of rejected STIC polls */
69 u_int sxc_nstall; /* number of queue stalls */
70 u_int sxc_busy; /* true if STIC is busy */
71 u_int sxc_reserved[8]; /* reserved for future use */
72 u_int sxc_done[16]; /* packet completion semaphores */
73};
74
75/*
76 * stic_xmap: a description of the area returned by mapping the board.
77 * sxm_xcomm and sxm_buf are physically contigious and of variable size as a
78 * whole; the combined size is learnt from stic_xinfo::sxi_buf_size.
79 */
80struct stic_xmap {
81 u_int8_t sxm_stic[NBPG]; /* STIC registers */
82 u_int8_t sxm_poll[0xc0000]; /* poll registers */
83 u_int8_t sxm_xcomm[256 * 1024]; /* X comms area */
84};
85
86/*
87 * ioctl interface.
88 */
89#define STICIO_GXINFO _IOR('S', 0, struct stic_xinfo)
90#define STICIO_RESET _IO('S', 1)
91#define STICIO_START860 _IO('S', 2) /* PXG only, may disappear */
92#define STICIO_RESET860 _IO('S', 3) /* PXG only, may disappear */
93#define STICIO_STARTQ _IO('S', 4) /* currently PX only */
94#define STICIO_STOPQ _IO('S', 5) /* currently PX only */
95
96#endif /* !_TC_STICIO_H_ */
97