mirror of
https://github.com/freebsd/freebsd-src
synced 2024-11-05 18:22:52 +00:00
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
3 changed files with 357 additions and 4 deletions
|
|
@ -41,7 +41,7 @@
|
|||
* SUCH DAMAGE.
|
||||
*
|
||||
* from: @(#)conf.c 5.8 (Berkeley) 5/12/91
|
||||
* $Id: conf.c,v 1.56 1995/01/31 06:34:53 amurai Exp $
|
||||
* $Id: conf.c,v 1.57 1995/02/05 11:29:38 jkh Exp $
|
||||
*/
|
||||
|
||||
#include <sys/param.h>
|
||||
|
|
@ -751,6 +751,24 @@ d_select_t tunselect;
|
|||
#define tunselect (d_select_t *)enxio
|
||||
#endif
|
||||
|
||||
#include "spigot.h"
|
||||
#if NSPIGOT > 0
|
||||
d_open_t spigot_open;
|
||||
d_close_t spigot_close;
|
||||
d_ioctl_t spigot_ioctl;
|
||||
d_rdwr_t spigot_read, spigot_write;
|
||||
d_select_t spigot_select;
|
||||
d_mmap_t spigot_mmap;
|
||||
#else
|
||||
#define spigot_open (d_open_t *)enxio
|
||||
#define spigot_close (d_close_t *)enxio
|
||||
#define spigot_ioctl (d_ioctl_t *)enxio
|
||||
#define spigot_read (d_rdwr_t *)enxio
|
||||
#define spigot_write (d_rdwr_t *)enxio
|
||||
#define spigot_select seltrue
|
||||
#define spigot_mmap nommap
|
||||
#endif
|
||||
|
||||
/* open, close, read, write, ioctl, stop, reset, ttys, select, mmap, strat */
|
||||
struct cdevsw cdevsw[] =
|
||||
{
|
||||
|
|
@ -787,9 +805,9 @@ struct cdevsw cdevsw[] =
|
|||
{ wtopen, wtclose, rawread, rawwrite, /*10*/
|
||||
wtioctl, nostop, nullreset, NULL, /* wt */
|
||||
seltrue, nommap, wtstrategy },
|
||||
{ noopen, noclose, noread, nowrite, /*11*/
|
||||
noioc, nostop, nullreset, NULL,
|
||||
seltrue, nommap, nostrat },
|
||||
{ spigot_open, spigot_close, spigot_read, spigot_write, /*11*/
|
||||
spigot_ioctl, nostop, nullreset, NULL, /* Spigot */
|
||||
spigot_select, spigot_mmap, NULL },
|
||||
{ scopen, scclose, scread, scwrite, /*12*/
|
||||
scioctl, nullstop, nullreset, sccons, /* sc */
|
||||
ttselect, scmmap, NULL },
|
||||
|
|
|
|||
80
sys/i386/include/spigot.h
Normal file
80
sys/i386/include/spigot.h
Normal file
|
|
@ -0,0 +1,80 @@
|
|||
/*
|
||||
* Video spigot capture driver.
|
||||
*
|
||||
* Copyright (c) 1995, Jim Lowe. All rights reserved.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
||||
*
|
||||
* Version 1.1, Feb 1, 1995.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Set up a user interrupt.
|
||||
*/
|
||||
#define SPIGOT_SETINT _IOW('s', 5, int)
|
||||
/*
|
||||
* Allow/disallow access to the I/O Page.
|
||||
*/
|
||||
#define SPIGOT_IOPL_ON _IO ('s', 6)
|
||||
#define SPIGOT_IOPL_OFF _IO ('s', 7)
|
||||
|
||||
#ifndef KERNEL
|
||||
/*
|
||||
* Defines for spigot library.
|
||||
*/
|
||||
unsigned short * spigot_open(char *dev);
|
||||
void spigot_close(void);
|
||||
void spigot_set_capture_size(int width, int vtof);
|
||||
unsigned char spigot_start_xfer(int num_frames);
|
||||
void spigot_stop_xfer(void);
|
||||
unsigned char spigot_status(void);
|
||||
|
||||
/*
|
||||
* Define the status bits.
|
||||
*/
|
||||
#define SPIGOT_COLOR 0x01 /* Color present (No color) */
|
||||
#define SPIGOT_60HZ 0x02 /* 60 hz input signal (50hz) */
|
||||
#define SPIGOT_NO_HORIZONTAL_LOCK 0x04 /* Horizontal lock present */
|
||||
#define SPIGOT_HPLL_LOCKED 0x08 /* HPLL locked (HPLL unlocked)*/
|
||||
#define SPIGOT_VCR_MODE 0x10 /* VCR mode (TV mode) */
|
||||
#define SPIGOT_VSYNC_PRESENT 0x20 /* Vsync present */
|
||||
|
||||
/*
|
||||
* spigot_open() returns a data address pointing to the spigot data.
|
||||
* Each read from this address returns the next word. The ``dev'' passed
|
||||
* is usually "/dev/spigot". Data is described in the phillips desktop
|
||||
* video data handbook under the 7191 chip. Formats may be either
|
||||
* YUV 4:2:2 or YUV 4:1:1. A sample device driver for ``nv'' is included
|
||||
* with this code.
|
||||
*
|
||||
* spigot_close() cleans up and closes the device.
|
||||
*
|
||||
* spigot_set_capture_size() will set the capture window size. Width should be
|
||||
* one of: 80, 160, 240, 320, or 640 for NTSC or
|
||||
* 96, 192, 288, 384 for PAL.
|
||||
* vtof is the Vertical top of frame offset and must be between 0 and 15 lines.
|
||||
*
|
||||
* spigot_start_xfer() will start a transfer from the 7191 to the data fifo.
|
||||
* spigot_stop_xfer() will clear the data fifo and abort any transfers.
|
||||
*
|
||||
* spigot_status() will return the above status bits.
|
||||
*/
|
||||
#endif
|
||||
255
sys/i386/isa/spigot.c
Normal file
255
sys/i386/isa/spigot.c
Normal file
|
|
@ -0,0 +1,255 @@
|
|||
/*
|
||||
* Video spigot capture driver.
|
||||
*
|
||||
* Copyright (c) 1995, Jim Lowe. All rights reserved.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
||||
*
|
||||
* This is the minimum driver code required to make a spigot work.
|
||||
* Unfortunatly, I can't include a real driver since the information
|
||||
* on the spigot is under non-disclosure. You can pick up a library
|
||||
* that will work with this driver from ftp://ftp.cs.uwm.edu/pub/FreeBSD.
|
||||
* The library contains the source that I can release as well as several
|
||||
* object modules and functions that allows one to read spigot data.
|
||||
* See the code for spigot_grab.c that is included with the library
|
||||
* data.
|
||||
*
|
||||
* We are working with the vendor so I can release the code, please don't
|
||||
* ask me for it. When/if I can release it, I will.
|
||||
*
|
||||
* Version 1.1, Feb 1, 1995.
|
||||
*
|
||||
*/
|
||||
|
||||
#include "spigot.h"
|
||||
#if NSPIGOT > 0
|
||||
|
||||
#if NSPIGOT > 1
|
||||
error "Can only have 1 spigot configured."
|
||||
#endif
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include <sys/proc.h>
|
||||
#include <sys/user.h>
|
||||
#include <sys/file.h>
|
||||
#include <sys/uio.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/malloc.h>
|
||||
#include <sys/devconf.h>
|
||||
#include <sys/errno.h>
|
||||
#include <sys/mman.h>
|
||||
|
||||
#include <i386/isa/isa.h>
|
||||
#include <i386/isa/isa_device.h>
|
||||
|
||||
#include <i386/include/spigot.h>
|
||||
#include <i386/include/psl.h>
|
||||
|
||||
|
||||
struct spigot_softc {
|
||||
int flags;
|
||||
caddr_t maddr;
|
||||
struct proc *p;
|
||||
int signal_num;
|
||||
} spigot_softc[NSPIGOT];
|
||||
|
||||
/* flags in softc */
|
||||
#define OPEN 0x01
|
||||
|
||||
#define UNIT(dev) minor(dev)
|
||||
|
||||
int spigot_probe(struct isa_device *id);
|
||||
int spigot_attach(struct isa_device *id);
|
||||
|
||||
struct isa_driver spidriver = {spigot_probe, spigot_attach, "spigot"};
|
||||
|
||||
static struct kern_devconf kdc_spigot[NSPIGOT] = {
|
||||
0, /* kdc_next -> filled in by dev_attach() */
|
||||
0, /* kdc_rlink -> filled in by dev_attach() */
|
||||
0, /* kdc_number -> filled in by dev_attach() */
|
||||
"spigot", /* kdc_name */
|
||||
0, /* kdc_unit */
|
||||
{ /* kdc_md */
|
||||
MDDT_ISA, /* mddc_devtype */
|
||||
0 /* mddc_flags */
|
||||
/* mddc_imask[4] */
|
||||
},
|
||||
isa_generic_externalize, /* kdc_externalize */
|
||||
0, /* kdc_internalize */
|
||||
0, /* kdc_goaway */
|
||||
ISA_EXTERNALLEN, /* kdc_datalen */
|
||||
&kdc_isa0, /* kdc_parent */
|
||||
0, /* kdc_parentdata */
|
||||
DC_UNKNOWN, /* kdc_state - not supported */
|
||||
"Video Spigot frame grabber" /* kdc_description */
|
||||
};
|
||||
|
||||
static inline void
|
||||
spigot_registerdev(struct isa_device *id)
|
||||
{
|
||||
if(id->id_unit)
|
||||
kdc_spigot[id->id_unit] = kdc_spigot[0];
|
||||
kdc_spigot[id->id_unit].kdc_unit = id->id_unit;
|
||||
kdc_spigot[id->id_unit].kdc_isa = id;
|
||||
dev_attach(&kdc_spigot[id->id_unit]);
|
||||
}
|
||||
|
||||
int
|
||||
spigot_probe(struct isa_device *devp)
|
||||
{
|
||||
int status;
|
||||
|
||||
if(inb(0xad9) == 0xff) /* ff if board isn't there??? */
|
||||
status = 0;
|
||||
else
|
||||
status = 1;
|
||||
|
||||
return(status);
|
||||
}
|
||||
|
||||
int
|
||||
spigot_attach(struct isa_device *devp)
|
||||
{
|
||||
struct spigot_softc *ss=(struct spigot_softc *)&spigot_softc[devp->id_unit];
|
||||
|
||||
ss->flags = 0;
|
||||
ss->maddr = devp->id_maddr;
|
||||
|
||||
spigot_registerdev(devp);
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
int
|
||||
spigot_open(dev_t dev, int flag)
|
||||
{
|
||||
struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[UNIT(dev)];
|
||||
|
||||
|
||||
if(ss->flags & OPEN)
|
||||
return EBUSY;
|
||||
ss->flags |= OPEN;
|
||||
ss->p = 0;
|
||||
ss->signal_num = 0;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
spigot_close(dev_t dev, int flag)
|
||||
{
|
||||
struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[UNIT(dev)];
|
||||
|
||||
ss->flags &= ~OPEN;
|
||||
ss->p = 0;
|
||||
ss->signal_num = 0;
|
||||
|
||||
outb(0xad6, 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
spigot_write(dev_t dev, struct uio *uio, int ioflag)
|
||||
{
|
||||
struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[UNIT(dev)];
|
||||
|
||||
return ENXIO;
|
||||
}
|
||||
|
||||
int
|
||||
spigot_read(dev_t dev, struct uio *uio, int ioflag)
|
||||
{
|
||||
struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[UNIT(dev)];
|
||||
|
||||
return ENXIO;
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
spigot_ioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
|
||||
{
|
||||
struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[UNIT(dev)];
|
||||
struct trapframe *fp;
|
||||
|
||||
switch(cmd){
|
||||
case SPIGOT_SETINT:
|
||||
ss->p = p;
|
||||
ss->signal_num = *((int *)data);
|
||||
break;
|
||||
case SPIGOT_IOPL_ON: /* allow access to the IO PAGE */
|
||||
fp=(struct trapframe *)p->p_md.md_regs;
|
||||
fp->tf_eflags |= PSL_IOPL;
|
||||
break;
|
||||
case SPIGOT_IOPL_OFF: /* deny access to the IO PAGE */
|
||||
fp=(struct trapframe *)p->p_md.md_regs;
|
||||
fp->tf_eflags &= ~PSL_IOPL;
|
||||
break;
|
||||
default:
|
||||
printf("spigot ioctl: cmd=0x%x, '%c', num = %d, len=%d, %s\n",
|
||||
cmd, IOCGROUP(cmd), cmd & 0xff, IOCPARM_LEN(cmd),
|
||||
cmd&IOC_IN ? "in" : "out");
|
||||
return ENOTTY;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
spigot_select(dev_t dev, int rw, struct proc *p)
|
||||
{
|
||||
struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[UNIT(dev)];
|
||||
int s;
|
||||
int r;
|
||||
|
||||
return ENXIO;
|
||||
}
|
||||
|
||||
/*
|
||||
* Interrupt procedure.
|
||||
* Just call a user level interrupt routine.
|
||||
*/
|
||||
void
|
||||
spigintr(int unit)
|
||||
{
|
||||
struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[unit];
|
||||
|
||||
if(ss->p && ss->signal_num)
|
||||
psignal(ss->p, ss->signal_num);
|
||||
}
|
||||
|
||||
int
|
||||
spigot_mmap(dev_t dev, int offset, int nprot)
|
||||
{
|
||||
struct spigot_softc *ss = (struct spigot_softc *)&spigot_softc[0];
|
||||
|
||||
if(offset != 0)
|
||||
return 0;
|
||||
|
||||
if(nprot & PROT_EXEC)
|
||||
return 0;
|
||||
|
||||
return i386_btop(ss->maddr);
|
||||
}
|
||||
|
||||
#endif /* NSPIGOT */
|
||||
Loading…
Reference in a new issue