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f3a4ca94cd
Add support for LKM operation.
Change M_NOWAIT on buffer memory allocation to M_WAIT in hopes we'll be
able to get ourselves a nice fat buffer from the kernel if we suspend.
Note: The LKM support looks kinda screwy in two areas, where I found
problems with the kernel proper. First, calling dev_attach()
at module load time will cause a panic. I haven't investigated.
Secondly, I had to manually call qcam_drvinit() to register the
device softc structure by hand at module load time. This seems
bogus, it should be called as a core part of the module load
process for character/block device drivers.
118 lines
4.1 KiB
C
118 lines
4.1 KiB
C
/*
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* FreeBSD Connectix QuickCam parallel-port camera video capture driver.
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* Copyright (c) 1996, Paul Traina.
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*
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* This driver is based in part on the Linux QuickCam driver which is
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* Copyright (c) 1996, Thomas Davis.
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*
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* QuickCam(TM) is a registered trademark of Connectix Inc.
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* Use this driver at your own risk, it is not warranted by
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* Connectix or the authors.
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software withough specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* The information in this file is private and shared between various
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* parts of the QuickCam(TM) driver.
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*/
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#ifndef _QCAM_DEFS_H
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#define _QCAM_DEFS_H 1
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extern int qcam_debug;
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struct qcam_softc {
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u_char *buffer; /* frame buffer */
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u_char *buffer_end; /* end of frame buffer */
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u_int flags;
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u_int iobase;
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int unit; /* device */
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void (*scanner)(struct qcam_softc *);
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int init_req; /* initialization required */
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int x_size; /* pixels */
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int y_size; /* pixels */
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int x_origin; /* ?? units */
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int y_origin; /* ?? units */
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int zoom; /* 0=none, 1=1.5x, 2=2x */
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int bpp; /* 4 or 6 */
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int exposure; /* time to open shutter */
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u_char xferparms; /* calcualted transfer params */
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u_char contrast;
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u_char brightness;
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u_char whitebalance;
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#ifdef KERNEL
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#ifdef __FreeBSD__
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struct kern_devconf kdc; /* kernel config database */
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#ifdef DEVFS
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void *devfs_token;
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#endif /* DEVFS */
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#endif /* __FreeBSD__ */
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#endif /* KERNEL */
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};
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/* flags in softc */
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#define QC_OPEN 0x01 /* device open */
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#define QC_ALIVE 0x02 /* probed and attached */
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#define QC_BIDIR_HW 0x04 /* bidir parallel port */
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#define QC_FORCEUNI 0x08 /* ...but force unidir mode */
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#define QC_MAXFRAMEBUFSIZE (QC_MAX_XSIZE*QC_MAX_YSIZE)
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#ifdef LINUX /* Linux is backwards from *BSD */
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#define read_data(P) inb((P))
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#define read_data_word(P) inw((P))
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#define read_status(P) inb((P)+1)
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#define write_data(P, V) outb((V), (P)+0)
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#define write_status(P, V) outb((V), (P)+1)
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#define write_control(P, V) outb((V), (P)+2)
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#else /* FreeBSD/NetBSD/BSDI */
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#define read_data(P) inb((P))
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#define read_data_word(P) inw((P))
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#define read_status(P) inb((P)+1)
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#define write_data(P, V) outb((P)+0, (V))
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#define write_status(P, V) outb((P)+1, (V))
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#define write_control(P, V) outb((P)+2, (V))
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#endif
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#define QC_TIMEOUT_INIT 60000 /* timeout for first
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read of scan */
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#define QC_TIMEOUT_CMD 5000 /* timeout for control cmds */
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#define QC_TIMEOUT 400 /* timeout on scan reads */
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/* This value could be OS
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dependant */
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#define QC_DEF_EXPOSURE 200 /* default exposure */
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extern int qcam_detect __P((u_int port));
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extern void qcam_reset __P((struct qcam_softc *qs));
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extern int qcam_scan __P((struct qcam_softc *qs));
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extern void qcam_default __P((struct qcam_softc *qs));
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#endif /* _QCAM_DEFS_H */
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