mirror of
https://github.com/freebsd/freebsd-src
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The very minimum driver required to support a Video Spigot. See the
copyright notices in the code for information on where to go to pick up additional useful bits. Submitted by: Jim Lowe <james@blatz.cs.uwm.edu>
This commit is contained in:
Jordan K. Hubbard
parent
2cd01159da
commit
f741ad121b
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=6219
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@ -41,7 +41,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)conf.c 5.8 (Berkeley) 5/12/91
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* $Id: conf.c,v 1.56 1995/01/31 06:34:53 amurai Exp $
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* $Id: conf.c,v 1.57 1995/02/05 11:29:38 jkh Exp $
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*/
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#include <sys/param.h>
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@ -751,6 +751,24 @@ d_select_t tunselect;
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#define tunselect (d_select_t *)enxio
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#endif
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#include "spigot.h"
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#if NSPIGOT > 0
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d_open_t spigot_open;
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d_close_t spigot_close;
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d_ioctl_t spigot_ioctl;
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d_rdwr_t spigot_read, spigot_write;
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d_select_t spigot_select;
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d_mmap_t spigot_mmap;
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#else
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#define spigot_open (d_open_t *)enxio
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#define spigot_close (d_close_t *)enxio
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#define spigot_ioctl (d_ioctl_t *)enxio
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#define spigot_read (d_rdwr_t *)enxio
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#define spigot_write (d_rdwr_t *)enxio
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#define spigot_select seltrue
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#define spigot_mmap nommap
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#endif
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/* open, close, read, write, ioctl, stop, reset, ttys, select, mmap, strat */
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struct cdevsw cdevsw[] =
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{
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@ -787,9 +805,9 @@ struct cdevsw cdevsw[] =
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{ wtopen, wtclose, rawread, rawwrite, /*10*/
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wtioctl, nostop, nullreset, NULL, /* wt */
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seltrue, nommap, wtstrategy },
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{ noopen, noclose, noread, nowrite, /*11*/
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noioc, nostop, nullreset, NULL,
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seltrue, nommap, nostrat },
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{ spigot_open, spigot_close, spigot_read, spigot_write, /*11*/
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spigot_ioctl, nostop, nullreset, NULL, /* Spigot */
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spigot_select, spigot_mmap, NULL },
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{ scopen, scclose, scread, scwrite, /*12*/
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scioctl, nullstop, nullreset, sccons, /* sc */
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ttselect, scmmap, NULL },
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80
sys/i386/include/spigot.h
Normal file
80
sys/i386/include/spigot.h
Normal file
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@ -0,0 +1,80 @@
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/*
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* Video spigot capture driver.
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*
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* Copyright (c) 1995, Jim Lowe. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer. 2.
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Version 1.1, Feb 1, 1995.
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*/
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/*
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* Set up a user interrupt.
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*/
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#define SPIGOT_SETINT _IOW('s', 5, int)
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/*
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* Allow/disallow access to the I/O Page.
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*/
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#define SPIGOT_IOPL_ON _IO ('s', 6)
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#define SPIGOT_IOPL_OFF _IO ('s', 7)
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#ifndef KERNEL
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/*
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* Defines for spigot library.
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*/
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unsigned short * spigot_open(char *dev);
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void spigot_close(void);
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void spigot_set_capture_size(int width, int vtof);
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unsigned char spigot_start_xfer(int num_frames);
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void spigot_stop_xfer(void);
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unsigned char spigot_status(void);
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/*
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* Define the status bits.
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*/
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#define SPIGOT_COLOR 0x01 /* Color present (No color) */
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#define SPIGOT_60HZ 0x02 /* 60 hz input signal (50hz) */
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#define SPIGOT_NO_HORIZONTAL_LOCK 0x04 /* Horizontal lock present */
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#define SPIGOT_HPLL_LOCKED 0x08 /* HPLL locked (HPLL unlocked)*/
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#define SPIGOT_VCR_MODE 0x10 /* VCR mode (TV mode) */
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#define SPIGOT_VSYNC_PRESENT 0x20 /* Vsync present */
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/*
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* spigot_open() returns a data address pointing to the spigot data.
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* Each read from this address returns the next word. The ``dev'' passed
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* is usually "/dev/spigot". Data is described in the phillips desktop
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* video data handbook under the 7191 chip. Formats may be either
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* YUV 4:2:2 or YUV 4:1:1. A sample device driver for ``nv'' is included
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* with this code.
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*
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* spigot_close() cleans up and closes the device.
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*
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* spigot_set_capture_size() will set the capture window size. Width should be
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* one of: 80, 160, 240, 320, or 640 for NTSC or
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* 96, 192, 288, 384 for PAL.
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* vtof is the Vertical top of frame offset and must be between 0 and 15 lines.
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*
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* spigot_start_xfer() will start a transfer from the 7191 to the data fifo.
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* spigot_stop_xfer() will clear the data fifo and abort any transfers.
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*
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* spigot_status() will return the above status bits.
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*/
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#endif
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255
sys/i386/isa/spigot.c
Normal file
255
sys/i386/isa/spigot.c
Normal file
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@ -0,0 +1,255 @@
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/*
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* Video spigot capture driver.
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*
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* Copyright (c) 1995, Jim Lowe. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer. 2.
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This is the minimum driver code required to make a spigot work.
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* Unfortunatly, I can't include a real driver since the information
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* on the spigot is under non-disclosure. You can pick up a library
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* that will work with this driver from ftp://ftp.cs.uwm.edu/pub/FreeBSD.
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* The library contains the source that I can release as well as several
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* object modules and functions that allows one to read spigot data.
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* See the code for spigot_grab.c that is included with the library
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* data.
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*
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* We are working with the vendor so I can release the code, please don't
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* ask me for it. When/if I can release it, I will.
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*
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* Version 1.1, Feb 1, 1995.
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*
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*/
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#include "spigot.h"
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#if NSPIGOT > 0
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#if NSPIGOT > 1
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error "Can only have 1 spigot configured."
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/ioctl.h>
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#include <sys/proc.h>
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#include <sys/user.h>
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#include <sys/file.h>
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#include <sys/uio.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/devconf.h>
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#include <sys/errno.h>
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#include <sys/mman.h>
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#include <i386/isa/isa.h>
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#include <i386/isa/isa_device.h>
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#include <i386/include/spigot.h>
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#include <i386/include/psl.h>
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struct spigot_softc {
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int flags;
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caddr_t maddr;
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struct proc *p;
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int signal_num;
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} spigot_softc[NSPIGOT];
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/* flags in softc */
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#define OPEN 0x01
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#define UNIT(dev) minor(dev)
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int spigot_probe(struct isa_device *id);
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int spigot_attach(struct isa_device *id);
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struct isa_driver spidriver = {spigot_probe, spigot_attach, "spigot"};
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static struct kern_devconf kdc_spigot[NSPIGOT] = {
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0, /* kdc_next -> filled in by dev_attach() */
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0, /* kdc_rlink -> filled in by dev_attach() */
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0, /* kdc_number -> filled in by dev_attach() */
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"spigot", /* kdc_name */
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0, /* kdc_unit */
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{ /* kdc_md */
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MDDT_ISA, /* mddc_devtype */
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0 /* mddc_flags */
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/* mddc_imask[4] */
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},
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isa_generic_externalize, /* kdc_externalize */
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0, /* kdc_internalize */
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0, /* kdc_goaway */
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ISA_EXTERNALLEN, /* kdc_datalen */
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&kdc_isa0, /* kdc_parent */
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0, /* kdc_parentdata */
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DC_UNKNOWN, /* kdc_state - not supported */
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"Video Spigot frame grabber" /* kdc_description */
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};
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static inline void
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spigot_registerdev(struct isa_device *id)
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{
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if(id->id_unit)
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kdc_spigot[id->id_unit] = kdc_spigot[0];
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kdc_spigot[id->id_unit].kdc_unit = id->id_unit;
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kdc_spigot[id->id_unit].kdc_isa = id;
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dev_attach(&kdc_spigot[id->id_unit]);
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}
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int
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spigot_probe(struct isa_device *devp)
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{
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int status;
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if(inb(0xad9) == 0xff) /* ff if board isn't there??? */
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status = 0;
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else
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status = 1;
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return(status);
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}
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int
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spigot_attach(struct isa_device *devp)
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{
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struct spigot_softc *ss=(struct spigot_softc *)&spigot_softc[devp->id_unit];
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ss->flags = 0;
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ss->maddr = devp->id_maddr;
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spigot_registerdev(devp);
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return 1;
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}
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int
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spigot_open(dev_t dev, int flag)
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{
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struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[UNIT(dev)];
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if(ss->flags & OPEN)
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return EBUSY;
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ss->flags |= OPEN;
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ss->p = 0;
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ss->signal_num = 0;
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return 0;
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}
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int
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spigot_close(dev_t dev, int flag)
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{
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struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[UNIT(dev)];
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ss->flags &= ~OPEN;
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ss->p = 0;
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ss->signal_num = 0;
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outb(0xad6, 0);
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return 0;
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}
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int
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spigot_write(dev_t dev, struct uio *uio, int ioflag)
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{
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struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[UNIT(dev)];
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return ENXIO;
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}
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int
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spigot_read(dev_t dev, struct uio *uio, int ioflag)
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{
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struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[UNIT(dev)];
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return ENXIO;
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}
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int
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spigot_ioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
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{
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struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[UNIT(dev)];
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struct trapframe *fp;
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switch(cmd){
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case SPIGOT_SETINT:
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ss->p = p;
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ss->signal_num = *((int *)data);
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break;
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case SPIGOT_IOPL_ON: /* allow access to the IO PAGE */
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fp=(struct trapframe *)p->p_md.md_regs;
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fp->tf_eflags |= PSL_IOPL;
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break;
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case SPIGOT_IOPL_OFF: /* deny access to the IO PAGE */
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fp=(struct trapframe *)p->p_md.md_regs;
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fp->tf_eflags &= ~PSL_IOPL;
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break;
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default:
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printf("spigot ioctl: cmd=0x%x, '%c', num = %d, len=%d, %s\n",
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cmd, IOCGROUP(cmd), cmd & 0xff, IOCPARM_LEN(cmd),
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cmd&IOC_IN ? "in" : "out");
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return ENOTTY;
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}
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return 0;
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}
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int
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spigot_select(dev_t dev, int rw, struct proc *p)
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{
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struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[UNIT(dev)];
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int s;
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int r;
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return ENXIO;
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}
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/*
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* Interrupt procedure.
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* Just call a user level interrupt routine.
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*/
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void
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spigintr(int unit)
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{
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struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[unit];
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if(ss->p && ss->signal_num)
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psignal(ss->p, ss->signal_num);
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}
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int
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spigot_mmap(dev_t dev, int offset, int nprot)
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{
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struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[0];
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if(offset != 0)
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return 0;
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if(nprot & PROT_EXEC)
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return 0;
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return i386_btop(ss->maddr);
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}
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#endif /* NSPIGOT */
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