freebsd-nq/sys/pci/meteor.c

/*
 * Copyright (c) 1995 Mark Tinguely and 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Mark Tinguely and Jim Lowe
 * 4. The name of the author may not be used to endorse or promote products 
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
 */

/*		Change History:
	8/21/95		Release
	8/23/95		On advice from Stefan Esser, added volatile to PCI
			memory pointers to remove PCI caching .
	8/29/95		Fixes suggested by Bruce Evans.
			meteor_mmap should return -1 on error rather than 0.
			unit # > NMETEOR should be unit # >= NMETEOR.
	10/24/95	Turn 50 Hz processing for SECAM and 60 Hz processing
			off for AUTOMODE.
	11/11/95	Change UV from always begin signed to ioctl selected
			to either signed or unsigned.
	12/07/95	Changed 7196 startup codes for 50 Hz as recommended
			by Luigi Rizzo (luigi@iet.unipi.it)
	12/08/95	Clear SECAM bit in PAL/NTSC and set input field count
			bits for 50 Hz mode (PAL/SECAM) before I was setting the
			output count bits. by Luigi Rizzo (luigi@iet.unipi.it)
	12/18/95	Correct odd DMA field (never exceed, but good for safety
			Changed 7196 startup codes for 50 Hz as recommended
			by Luigi Rizzo (luigi@iet.unipi.it)
	12/19/95	Changed field toggle mode to enable (offset 0x3c)
			recommended by luigi@iet.unipi.it
			Added in prototyping, include file, staticizing,
			and DEVFS changes from FreeBSD team.
			Changed the default allocated pages from 151 (NTSC)
			to 217 (PAL).
			Cleaned up some old comments in iic_write().
			Added a Field (even or odd) only capture mode to 
			eliminate the high frequency problems with compression
			algorithms.  Recommended by luigi@iet.unipi.it.
			Changed geometry ioctl so if it couldn't allocated a
			large enough contiguous space, it wouldn't free the
			stuff it already had.
			Added new mode called YUV_422 which delivers the
			data in planer Y followed by U followed by V. This
			differs from the standard YUV_PACKED mode in that
			the chrominance (UV) data is in the correct (different)
			order. This is for programs like vic and mpeg_encode
			so they don't have to reorder the chrominance data.
			Added field count to stats.
			Increment frame count stat if capturing continuous on
			even frame grabs.
			Added my email address to these comments
			(james@cs.uwm.edu) suggested by (luigi@iet.unipt.it :-).
			Changed the user mode signal mechanism to allow the
			user program to be interrupted at the end of a frame
			in any one of the modes.  Added SSIGNAL ioctl.
			Added a SFPS/GFPS ioctl so one may set the frames per
			second that the card catpures.  This code needs to be
			completed.
			Changed the interrupt routine so synchronous capture
			will work on fields or frames and the starting frame
			can be either even or odd.
			Added HALT_N_FRAMES and CONT_N_FRAMES so one could
			stop and continue synchronous capture mode.
			Change the tsleep/wakeup function to wait on mtr
			rather than &read_intr_wait.
			Add option (METEOR_FreeBSD_210) for FreeBSD 2.1
			to compile.
*/

#include "meteor.h"

#if NMETEOR > 0

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/signalvar.h>
#include <sys/devconf.h>
#include <sys/mman.h>
#ifdef DEVFS
#include <sys/devfsext.h>
#endif /* DEVFS */
#include <machine/clock.h>
#include <machine/cpu.h>	/* bootverbose */

#include <vm/vm.h>
#include <vm/vm_kern.h>
#include <vm/vm_param.h>
#include <vm/pmap.h>
#include <vm/vm_extern.h>

#include <pci.h>
#if NPCI > 0
#include <pci/pcivar.h>
#include <pci/pcireg.h>
#endif
#include <machine/ioctl_meteor.h>


static void meteor_intr __P((void *arg));

/* 
 * Allocate enough memory for:
 *	768x576 RGB 16 or YUV (16 storage bits/pixel) = 884736 = 216 pages
 *
 * You may override this using the options "METEOR_ALLOC_PAGES=value" in your
 * kernel configuration file.
 */
#ifndef METEOR_ALLOC_PAGES
#define METEOR_ALLOC_PAGES 217
#endif
#define METEOR_ALLOC (METEOR_ALLOC_PAGES * PAGE_SIZE)

#define	NUM_SAA7116_PCI_REGS	37
#define	NUM_SAA7196_I2C_REGS	49

typedef struct {
    vm_offset_t virt_baseaddr;	/* saa7116 register virtual address */
    vm_offset_t phys_baseaddr;	/* saa7116 register physical address */
    vm_offset_t capt_cntrl;	/* capture control register offset 0x40 */
    vm_offset_t stat_reg;	/* status register offset 0x60 */
    vm_offset_t iic_virt_addr;	/* ICC bus register  offset 0x64 */
    pcici_t	tag;		/* PCI tag, for doing PCI commands */
    vm_offset_t bigbuf;		/* buffer that holds the captured image */
    int		alloc_pages;	/* number of pages in bigbuf */
    struct proc	*proc;		/* process to receive raised signal */
    int		signal;		/* signal to send to process */
    struct meteor_mem *mem;	/* used to control sync. multi-frame output */
    u_long	synch_wait;	/* wait for free buffer before continuing */
    short	current;	/* frame number in buffer (1-frames) */
    short	rows;		/* number of rows in a frame */
    short	cols;		/* number of columns in a frame */
    short	depth;		/* number of byte per pixel */
    short	frames;		/* number of frames allocated */
    int		frame_size;	/* number of bytes in a frame */
    u_long	fifo_errors;	/* number of fifo capture errors since open */
    u_long	dma_errors;	/* number of DMA capture errors since open */
    u_long	frames_captured;/* number of frames captured since open */
    u_long	even_fields_captured; /* number of even fields captured */
    u_long	odd_fields_captured; /* number of odd fields captured */
    unsigned	flags;
#define	METEOR_INITALIZED	0x00000001
#define	METEOR_OPEN		0x00000002 
#define	METEOR_MMAP		0x00000004
#define	METEOR_INTR		0x00000008
#define	METEOR_READ		0x00000010	/* XXX never gets referenced */
#define	METEOR_SINGLE		0x00000020	/* get single frame */
#define	METEOR_CONTIN		0x00000040	/* continuously get frames */
#define	METEOR_SYNCAP		0x00000080	/* synchronously get frames */
#define	METEOR_CAP_MASK		0x000000f0
#define	METEOR_NTSC		0x00000100
#define	METEOR_PAL		0x00000200
#define	METEOR_SECAM		0x00000400
#define	METEOR_AUTOMODE		0x00000800
#define	METEOR_FORM_MASK	0x00000f00
#define	METEOR_DEV0		0x00001000
#define	METEOR_DEV1		0x00002000
#define	METEOR_DEV2		0x00004000
#define	METEOR_DEV3		0x00008000
#define	METEOR_DEV_MASK		0x0000f000
#define	METEOR_RGB16		0x00010000
#define	METEOR_RGB24		0x00020000
#define	METEOR_YUV_PACKED	0x00040000
#define	METEOR_YUV_PLANER	0x00080000
#define	METEOR_WANT_EVEN	0x00100000	/* want even frame */
#define	METEOR_WANT_ODD		0x00200000	/* want odd frame */
#define	METEOR_WANT_MASK	0x00300000
#define METEOR_ONLY_EVEN_FIELDS	0x01000000
#define METEOR_ONLY_ODD_FIELDS	0x02000000
#define METEOR_ONLY_FIELDS_MASK 0x03000000
#define METEOR_YUV_422		0x04000000
#define	METEOR_OUTPUT_FMT_MASK	0x040f0000
    u_char	saa7196_i2c[NUM_SAA7196_I2C_REGS]; /* saa7196 register values */
    u_short	fps;		/* frames per second */
#ifdef DEVFS
    void	*devfs_token;
#endif
} meteor_reg_t;

static meteor_reg_t meteor[NMETEOR];

#define METPRI (PZERO+8)|PCATCH

/*---------------------------------------------------------
**
**	Meteor PCI probe and initialization routines
**
**---------------------------------------------------------
*/

static	char*	met_probe (pcici_t tag, pcidi_t type);
static	void	met_attach(pcici_t tag, int unit);
static	u_long	met_count;

static struct	pci_device met_device = {
	"meteor",
	met_probe,
	met_attach,
	&met_count
};

DATA_SET (pcidevice_set, met_device);

#if defined(METEOR_FreeBSD_210)	/* XXX */
d_open_t	meteor_open;
d_close_t	meteor_close;
d_read_t	meteor_read;
d_write_t	meteor_write;
d_ioctl_t	meteor_ioctl;
d_mmap_t	meteor_mmap;
#else
static	d_open_t	meteor_open;
static	d_close_t	meteor_close;
static	d_read_t	meteor_read;
static	d_write_t	meteor_write;
static	d_ioctl_t	meteor_ioctl;
static	d_mmap_t	meteor_mmap;

#define CDEV_MAJOR 67
static struct cdevsw meteor_cdevsw = 
        { meteor_open,  meteor_close,   meteor_read,    meteor_write,   /*67*/
          meteor_ioctl, nostop,         nullreset,      nodevtotty,/* Meteor */
          seltrue,	meteor_mmap, NULL,	"meteor",	NULL,	-1 };
#endif

static u_long saa7116_pci_default[NUM_SAA7116_PCI_REGS] = {
				/* PCI Memory registers	    	*/
				/* BITS	  Type	Description	*/
/* 0x00 */	0x00000000,	/* 31:1   e*RW	DMA 1 (Even)
				      0   RO    0x0 		*/
/* 0x04 */	0x00000000,	/* 31:2   e*RW	DMA 2 (Even)
				    1:0   RO	0x0		*/
/* 0x08 */	0x00000000,	/* 31:2   e*RW  DMA 3 (Even)
				    1:0   RO    0x0		*/
/* 0x0c */	0x00000000,	/* 31:1   o*RW	DMA 1 (Odd)
				      0   RO	0x0		*/
/* 0x10 */	0x00000000,	/* 31:2	  o*RW	DMA 2 (Odd)
				    1:0	  RO	0x0		*/
/* 0x14 */	0x00000000,	/* 31:2   o*RW	DMA 3 (Odd)
				    1:0   RO	0x0		*/
/* 0x18 */	0x00000500,	/* 15:2   e*RW  Stride 1 (Even)
				    1:0   RO	0x0		*/
/* 0x1c */	0x00000000,	/* 15:2	  e*RW	Stride 2 (Even)
				    1:0	  RO	0x0		*/
/* 0x20 */	0x00000000,	/* 15:2	  e*RW	Stride 3 (Even)
				    1:0	  RO	0x0		*/
/* 0x24 */	0x00000500,	/* 15:2	  o*RW	Stride 1 (Odd)
				    1:0	  RO	0x0		*/
/* 0x28 */	0x00000000,	/* 15:2	  o*RW	Stride 2 (Odd)
				    1:0	  RO	0x0		*/
/* 0x2c */	0x00000000,	/* 15:2	  o*RW	Stride 3 (Odd)
				    1:0	  RO	0x0		*/
/* 0x30 */	0xeeeeee01,	/* 31:8	  *RW	Route (Even)
				    7:0	  *RW	Mode (Even)	*/
/* 0x34 */	0xeeeeee01,	/* 31:8	  *RW	Route (Odd)
				    7:0	  *RW	Mode (Odd)	*/
/* 0x38 */	0x00200020, 	/* 22:16  *RW	FIFO Trigger Planer Mode,
				    6:0	  *RW	FIFO Trigger Packed Mode */
/* 0x3c */	0x00000107,	/*  9:8   *RW	Reserved (0x0)
				      2	  *RW	Field Toggle
				      1	  *RW	Reserved (0x1)
				      0	  *RW	Reserved (0x1)		*/
/* 0x40 */	0x000000c0,	/*    15  *RW	Range Enable
				      14  *RW	Corrupt Disable
				      11  *RR	Address Error (Odd)
				      10  *RR	Address Error (Even)
				      9   *RR	Field Corrupt (Odd)
				      8   *RR	Field Corrupt (Even)
				      7	  *RW	Fifo Enable
				      6   *RW	VRSTN#
				      5	  *RR	Field Done (Odd)
				      4   *RR	Field Done (Even)
				      3	  *RS	Single Field Capture (Odd)
				      2	  *RS	Single Field Capture (Even)
				      1	  *RW	Capture (ODD) Continous
				      0	  *RW	Capture (Even) Continous */
/* 0x44 */	0x00000000,	/*  7:0	  *RW	Retry Wait Counter */
/* 0x48 */	0x00000307,	/*    10  *RW	Interrupt mask, start of field
				      9   *RW	Interrupt mask, end odd field
				      8	  *RW	Interrupt mask, end even field
				      2   *RR	Interrupt status, start of field
				      1   *RR	Interrupt status, end of odd
				      0	  *RR	Interrupt status, end of even */
/* 0x4c */	0x00000001,	/* 31:0   *RW	Field Mask (Even) continous */
/* 0x50 */	0x00000001,	/* 31:0   *RW	Field Mask (Odd) continous */
/* 0x54 */	0x00000000,	/* 20:16  *RW	Mask Length (Odd)
				    4:0	  *RW	Mask Length (Even)	*/
/* 0x58 */	0x0005007c,	/* 22:16  *RW	FIFO almost empty
				    6:0	  *RW	FIFO almost full	*/
/* 0x5c */	0x461e1e0f,	/* 31:24  *RW	I2C Phase 4
				   23:16  *RW	I2C Phase 3
				   15:8   *RW	I2C Phase 2
				    7:0	  *RW	I2C Phase 1	*/
/* 0x60 */	0x00000300,	/* 31:24  *RO	I2C Read Data
				   23:16  **RW  I2C Auto Address
				      11  RO	I2C SCL Input
				      10  RO	I2C SDA Input
				      9	  RR	I2C Direct Abort
				      8   RR	I2C Auto Abort
				      3   RW	I2C SCL Output
				      2   RW	I2C SDA Output
				      1	  RW	I2C Bypass
				      0	  RW	I2C Auto Enable	*/
/* 0x64 */	0x00000000,	/*    24  RS	I2C New Cycle
				   23:16  **RW	I2C Direct Address
				   15:8   **RW	I2C Direct Sub-address
				    7:0	  **RW	I2C Direct Write Address */
/* 0x68 */	0x00000000,	/* 31:24  **RW  I2C Auto Sub-address 1 (Even)
				   23:16  **RW  I2C Auto Data 1 (Even)
				   15:8   **RW  I2C Auto Sub-address 0 (Even)
				    7:0	  **RW	I2C Auto Data 0 (Even) */
/* 0x6c */	0x00000000,	/* 31:24  **RW  I2C Auto Sub-address 3 (Even)
				   23:16  **RW  I2C Auto Data 3 (Even)
				   15:8   **RW  I2C Auto Sub-address 2 (Even)
				    7:0	  **RW	I2C Auto Data 2 (Even) */
/* 0x70 */	0x00000000,	/* 31:24  **RW  I2C Auto Sub-address 5 (Even)
				   23:16  **RW  I2C Auto Data 5 (Even)
				   15:8   **RW  I2C Auto Sub-address 4 (Even)
				    7:0	  **RW	I2C Auto Data 4 (Even) */
/* 0x74 */	0x00000000,	/* 31:24  **RW  I2C Auto Sub-address 7 (Even)
				   23:16  **RW  I2C Auto Data 7 (Even)
				   15:8   **RW  I2C Auto Sub-address 6 (Even)
				    7:0	  **RW	I2C Auto Data 6 (Even) */
/* 0x78 */	0x00000000,	/* 31:24  **RW  I2C Auto Sub-address 1 (Odd)
				   23:16  **RW  I2C Auto Data 1 (Odd)
				   15:8   **RW  I2C Auto Sub-address 0 (Odd)
				    7:0	  **RW	I2C Auto Data 0 (Odd) */
/* 0x7c */	0x00000000,	/* 31:24  **RW  I2C Auto Sub-address 3 (Odd)
				   23:16  **RW  I2C Auto Data 3 (Odd)
				   15:8   **RW  I2C Auto Sub-address 2 (Odd)
				    7:0	  **RW	I2C Auto Data 2 (Odd) */
/* 0x80 */	0x00000000,	/* 31:24  **RW  I2C Auto Sub-address 5 (Odd)
				   23:16  **RW  I2C Auto Data 5 (Odd)
				   15:8   **RW  I2C Auto Sub-address 4 (Odd)
				    7:0	  **RW	I2C Auto Data 4 (Odd) */
/* 0x84 */	0x00000000,	/* 31:24  **RW  I2C Auto Sub-address 7 (Odd)
				   23:16  **RW  I2C Auto Data 7 (Odd)
				   15:8   **RW  I2C Auto Sub-address 6 (Odd)
				    7:0	  **RW	I2C Auto Data 6 (Odd) */
/* 0x88 */	0x00000000,	/* 23:16  **RW	I2C Register Enable (Odd)
				    7:0	  **RW	I2C Register Enable (Even) */
/* 0x8c */	0x00000000,	/* 23:2	  e*RW	DMA End (Even)
				    1:0	  RO	0x0	*/
/* 0x90 */	0x00000000	/* 23:2	  e*RW	DMA End (Odd)
				    1:0	  RO	0x0	*/
};

static u_char saa7196_i2c_default[NUM_SAA7196_I2C_REGS] = {
			/* SAA7196 I2C bus control			*/
			/* BITS	Function				*/
/* 00 */	0x50,	/* 7:0	Increment Delay				*/
/* 01 */	0x30,	/* 7:0	Horizontal Sync Begin for 50hz		*/
/* 02 */	0x00,	/* 7:0	Horizontal Sync Stop for 50hz		*/
/* 03 */	0xe8,	/* 7:0	Horizontal Sync Clamp Start for 50hz	*/
/* 04 */	0xb6,	/* 7:0	Horizontal Sync Clamp Stop for 50hz 	*/
/* 05 */	0xf4,	/* 7:0	Horizontal Sync Start after PH1 for 50hz */
/* 06 */	0x46,	/*   7	Input mode =0 CVBS, =1 S-Video 
			     6	Pre filter
			   5:4  Aperture Bandpass characteristics
			   3:2	Coring range for high freq
			   1:0	Aperture bandpass filter weights	*/
/* 07 */	0x00,	/* 7:0	Hue					*/
/* 08 */	0x7f,	/* 7:3	Colour-killer threshold QAM (PAL, NTSC) */
/* 09 */	0x7f,	/* 7:3	Colour-killer threshold SECAM		*/
/* 0a */	0x7f,	/* 7:0	PAL switch sensitivity			*/
/* 0b */	0x7f,	/* 7:0	SECAM switch sensitivity		*/
/* 0c */	0x40,	/*   7	Colour-on bit
			   6:5	AGC filter				*/
/* 0d */	0x84,	/*   7	VTR/TV mode bit = 1->VTR mode
			     3	Realtime output mode select bit
			     2	HREF position select
			     1	Status byte select
			     0	SECAM mode bit				*/
/* 0e */	0x38,	/*   7	Horizontal clock PLL
			     5	Select interal/external clock source
			     4	Output enable of Horizontal/Vertical sync
			     3	Data output YUV enable
			     2	S-VHS bit
			     1	GPSW2
			     0	GPSW1					*/
/* 0f */	0x50,	/*   7	Automatic Field detection
			     6	Field Select 0 = 50hz, 1=60hz
			     5	SECAM cross-colour reduction
			     4	Enable sync and clamping pulse
			   3:1	Luminance delay compensation		*/
/* 10 */	0x00,	/*   2	Select HREF Position
			   1:0  Vertical noise reduction		*/
/* 11 */	0x2c,	/* 7:0	Chrominance gain conrtol for QAM	*/
/* 12 */	0x40,	/* 7:0	Chrominance saturation control for VRAM port */
/* 13 */	0x40,	/* 7:0	Luminance contract control for VRAM port */
/* 14 */	0x34,	/* 7:0	Horizontal sync begin for 60hz		*/
#ifdef notdef
/* 15 */	0x0c,	/* 7:0	Horizontal sync stop for 60hz		*/
/* 16 */	0xfb,	/* 7:0	Horizontal clamp begin for 60hz		*/
/* 17 */	0xd4,	/* 7:0	Horizontal clamp stop for 60hz		*/
/* 18 */	0xec,	/* 7:0	Horizontal sync start after PH1 for 60hz */
#else
		0x0a, 0xf4, 0xce, 0xf4,
#endif
/* 19 */	0x80,	/* 7:0	Luminance brightness control for VRAM port */
/* 1a */	0x00,
/* 1b */	0x00,
/* 1c */	0x00,
/* 1d */	0x00,
/* 1e */	0x00,
/* 1f */	0x00,
/* 20 */	0x90,	/*   7	ROM table bypass switch
			   6:5	Set output field mode
			     4	VRAM port outputs enable
			   3:2	First pixel position in VRO data
			   1:0	FIFO output register select		*/
/* 21 */	0x80,	/* 7:0	[7:0] Pixel number per line on output	*/
/* 22 */	0x80,	/* 7:0	[7:0] Pixel number per line on input	*/
/* 23 */	0x03,	/* 7:0	[7:0] Horizontal start position of scaling win*/
/* 24 */	0x8a,	/* 7:5	Horizontal decimation filter
			     4  [8] Horizontal start position of scaling win
			   3:2	[9:8] Pixel number per line on input
			   1:0  [9:8] Pixel number per line on output 	*/
/* 25 */	0xf0,	/* 7:0	[7:0] Line number per output field	*/
/* 26 */	0xf0,	/* 7:0	[7:0] Line number per input field	*/
/* 27 */	0x0f,	/* 7:0	[7:0] Vertical start of scaling window	*/
/* 28 */	0x80,	/*   7	Adaptive filter switch
			   6:5	Vertical luminance data processing
			     4	[8] Vertical start of scaling window 
			   3:2  [9:8] Line number per input field
			   1:0	[9:8] Line number per output field	*/
/* 29 */	0x16,	/* 7:0	[7:0] Vertical bypass start		*/
/* 2a */	0x00,	/* 7:0	[7:0] Vertical bypass count		*/
/* 2b */	0x00,	/*   4  [8] Vertical bypass start
			     2  [8] Vertical bypass count
			     0	Polarity, internally detected odd even flag */
/* 2c */	0x80,	/* 7:0	Set lower limit V for colour-keying	*/
/* 2d */	0x7f,	/* 7:0	Set upper limit V for colour-keying	*/
/* 2e */	0x80,	/* 7:0	Set lower limit U for colour-keying	*/
/* 2f */	0x7f,	/* 7:0	Set upper limit U for colour-keying	*/
/* 30 */	0xbf	/*   7	VRAM bus output format
			     6	Adaptive geometrical filter
			     5	Luminance limiting value
			     4	Monochrome and two's complement output data sel
			     3	Line quailifier flag
			     2	Pixel qualifier flag
			     1	Transparent data transfer
			     0	Extended formats enable bit		*/
};

/*
 * i2c_write:
 * Returns	0	Succesful completion.
 * Returns	1	If transfer aborted or timeout occured.
 *
 */
#define	SAA7196_I2C_ADDR		0x40
#define	I2C_WRITE			0x00
#define	I2C_READ	 		0x01
#define	SAA7116_IIC_NEW_CYCLE		0x1000000L
#define	IIC_DIRECT_TRANSFER_ABORTED	0x0000200L

#define	SAA7196_WRITE(mtr, reg, data) \
	i2c_write(mtr, SAA7196_I2C_ADDR, I2C_WRITE, reg, data), \
	mtr->saa7196_i2c[reg] = data
#define SAA7196_REG(mtr, reg) mtr->saa7196_i2c[reg]
#define	SAA7196_READ(mtr) \
	i2c_write(mtr, SAA7196_I2C_ADDR, I2C_READ, 0x0, 0x0)

static int
i2c_write(meteor_reg_t * mtr, u_char slave, u_char rw, u_char reg, u_char data)
{
register unsigned long	 wait_counter = 0x0001ffff;
register volatile u_long *iic_write_loc = (volatile u_long *)mtr->iic_virt_addr;
register int		 err = 0;

	/* Write the data the the i2c write register */
	*iic_write_loc = SAA7116_IIC_NEW_CYCLE |
		(((u_long)slave|(u_long)rw) << 16) |
		((u_long)reg << 8) | (u_long)data;

	/* Wait until the i2c cycle is compeleted */
	while((*iic_write_loc & SAA7116_IIC_NEW_CYCLE)) {
		if(!wait_counter) break;
		wait_counter--;
	}

	/* 1ffff should be enough delay time for the i2c cycle to complete */
	if(!wait_counter) {
		printf("meteor: saa7116 i2c %s transfer timeout 0x%x",
			rw ? "read" : "write", *iic_write_loc);
			
		err=1;
	} 

	/* Check for error on direct write, clear if any */
	if((*((volatile u_long *)mtr->stat_reg)) & IIC_DIRECT_TRANSFER_ABORTED){
		printf("meteor: saa7116 i2c %s tranfer aborted",
			rw ? "read" : "write" );
		err= 1;
	}

	if(err) {
		printf(" - reg=0x%x, value=0x%x.\n", reg, data);
	}
		
	return err;
}


static	char*
met_probe (pcici_t tag, pcidi_t type)
{
	switch (type) {

	case 0x12238086ul:	/* meteor */
		return ("Matrox Meteor");

	};
	return ((char*)0);
}

	/* interrupt handling routine 
	   complete meteor_read() if using interrupts
	*/
static void
meteor_intr(void *arg)
{
	meteor_reg_t	*mtr	   = (meteor_reg_t *) arg;
	volatile u_long	*cap	   = (volatile u_long *)mtr->capt_cntrl,
			*base	   = (volatile u_long *)mtr->virt_baseaddr,
			*stat	   = base + 18; /* mtr->virt_base + 0x48*/
	u_long		status	   = *stat,
			cap_err	   = *cap & 0x00000f00,
#ifdef METEOR_CHECK_PCI_BUS
			pci_err    = pci_conf_read(mtr->tag,
						PCI_COMMAND_STATUS_REG),
#endif
			next_base  = (u_long)(vtophys(mtr->bigbuf));

	/*
	 * Disable future interrupts if a capture mode is not selected.
	 * This can happen when we are in the process of closing or 
	 * changing capture modes, otherwise it shouldn't happen.
	 */
	if(!(mtr->flags & METEOR_CAP_MASK)) {
		*cap &= 0x8ff0;	/* disable future interrupts */
	}
#ifdef METEOR_CHECK_PCI_BUS
	/*
	 * Check for pci bus errors.
	 */
#define METEOR_MASTER_ABORT	0x20000000
#define METEOR_TARGET_ABORT	0x10000000
	if(pci_err & METEOR_MASTER_ABORT) {
		printf("meteor_intr: pci bus master dma abort: 0x%x 0x%x.\n",
			*base, *(base+3));
		pci_conf_write(mtr->tag, PCI_COMMAND_STATUS_REG, pci_err);
	}
	if(pci_err & METEOR_TARGET_ABORT) {
		printf("meteor_intr: pci bus target dma abort: 0x%x 0x%x.\n",
			*base, *(base+3));
		pci_conf_write(mtr->tag, PCI_COMMAND_STATUS_REG, pci_err);
	}
#endif
	/*
	 * Check for errors.
	 */
	if (cap_err) {
	   if (cap_err & 0x300) {
		mtr->fifo_errors++ ;	/* incrememnt fifo capture errors cnt */
	   	printf("meteor: capture error");
		printf(":%s FIFO overflow.\n", cap_err&0x0100? "even" : "odd");
	   }
	   if (cap_err & 0xc00) {
		mtr->dma_errors++ ;	/* increment DMA capture errors cnt */
	   	printf("meteor: capture error");
		printf(":%s DMA address.\n", cap_err&0x0400? "even" : "odd");
	   }
	}
	*cap |= 0x0f30;		/* clear error and field done */

	/*
	 * In synchronous capture mode we need to know what the address
	 * offset for the next field/frame will be.  next_base holds the
	 * value for the even dma buffers (for odd, one must add stride).
	 */
	if((mtr->flags & METEOR_SYNCAP) && !mtr->synch_wait &&
	   (mtr->current < mtr->frames)) { /* could be !=, but < is safer */
		/* next_base is initialized to mtr->bigbuf */
		next_base += mtr->frame_size * mtr->current;
	}

	/*
	 * Count the field and clear the field flag.
	 *
	 * In single mode capture, clear the continuous capture mode.
	 *
	 * In synchronous capture mode, if we have room for another field,
	 * adjust DMA buffer pointers.
	 * When we are above the hi water mark (hiwat), mtr->synch_wait will
	 * be set and we will not bump the DMA buffer pointers.  Thus, once
	 * we reach the hi water mark,  the driver acts like a continuous mode
	 * capture on the mtr->current frame until we hit the low water
	 * mark (lowat).  The user had the option of stopping or halting
	 * the capture if this is not the desired effect.
	 */
	if (status & 0x1) {		/* even field */
		mtr->even_fields_captured++;
		mtr->flags &= ~METEOR_WANT_EVEN;
		if((mtr->flags & METEOR_SYNCAP) && !mtr->synch_wait) {
			*base = next_base;
			/* XXX should add adjustments for YUV_422 & PLANER */
		}
	}
	if (status & 0x2) {		/* odd field */
		mtr->odd_fields_captured++;
		mtr->flags &= ~METEOR_WANT_ODD;
		if((mtr->flags & METEOR_SYNCAP) && !mtr->synch_wait) {
			*(base+3) = next_base + *(base+6);
			/* XXX should add adjustments for YUV_422 & PLANER */
		}
	}

	/*
	 * If we have a complete frame.
	 */
	if(!(mtr->flags & METEOR_WANT_MASK)) {
		mtr->frames_captured++;
		/*
		 * Wake up the user in single capture mode.
		 */
		if(mtr->flags & METEOR_SINGLE)
			wakeup((caddr_t)mtr);
		/*
		 * If the user requested to be notified via signal,
		 * let them know the frame is complete.
		 */
		if(mtr->proc && mtr->signal)
			psignal(mtr->proc, mtr->signal);
		/*
		 * Reset the want flags if in continuous or
		 * synchronous capture mode.
		 */
		if(mtr->flags & (METEOR_CONTIN|METEOR_SYNCAP)) {
			switch(mtr->flags & METEOR_ONLY_FIELDS_MASK) {
			case METEOR_ONLY_ODD_FIELDS:
				mtr->flags |= METEOR_WANT_ODD;
				break;
			case METEOR_ONLY_EVEN_FIELDS:
				mtr->flags |= METEOR_WANT_EVEN;
				break;
			default:
				mtr->flags |= METEOR_WANT_MASK;
				break;
			}
		}
		/*
		 * Special handling for synchronous capture mode.
		 */
		if(mtr->flags & METEOR_SYNCAP) {
			struct meteor_mem *mm = mtr->mem;
			/*
			 * Mark the current frame as active.  It is up to
			 * the user to clear this, but we will clear it
			 * for the user for the current frame being captured
			 * if we are within the water marks (see below).
			 */
			mm->active |= 1 << (mtr->current - 1);

			/*
			 * Since the user can muck with these values, we need
			 * to check and see if they are sane. If they don't
			 * pass the sanity check, disable the capture mode.
			 * This is rather rude, but then so was the user.
			 *
			 * Do we really need all of this or should we just
			 * eliminate the possiblity of allowing the
			 * user to change hi and lo water marks while it
			 * is running? XXX
			 */
			if(mm->num_active_bufs < 0 ||
			   mm->num_active_bufs > mtr->frames ||
		   	   mm->lowat < 1 || mm->lowat >= mtr->frames ||
			   mm->hiwat < 1 || mm->hiwat >= mtr->frames ||
			   mm->lowat > mm->hiwat ) {
				*cap &= 0x8ff0;
				mtr->flags &= ~(METEOR_SYNCAP|METEOR_WANT_MASK);
			} else {
				/*
			 	 * Ok, they are sane, now we want to
				 * check the water marks.
			 	 */
				if(mm->num_active_bufs <= mm->lowat)
					mtr->synch_wait = 0;
				if(mm->num_active_bufs >= mm->hiwat)
					mtr->synch_wait = 1;
				/*
				 * Clear the active frame bit for this frame
				 * and advance the counters if we are within
				 * the banks of the water marks. 
				 */
				if(!mtr->synch_wait) {
					mm->active &= ~(1 << mtr->current);
					mtr->current++;
					if(mtr->current > mtr->frames)
						mtr->current = 1;
					mm->num_active_bufs++;
				}
			}
		}
	}

	*stat |=  0x7;		/* clear interrupt status */
}

static void
set_fps(meteor_reg_t *mtr, u_short fps)
{
	volatile u_long *field_mask_even =
			(volatile u_long *)mtr->virt_baseaddr + 0x4c;
	volatile u_long *field_mask_odd = field_mask_even + 1;
	volatile u_long *field_mask_length = field_mask_odd + 1;

	/*
	 * A little sanity checking first...
	 */
	if(fps < 1)  fps = 1;
	if(fps > 30) fps = 30;
	mtr->fps = fps;	
	/*
	 * Set the fps using the mask/length.
	 */
	/* XXX we need some code to actually do this here... */
}


/*
 * Initialize the capture card to NTSC RGB 16 640x480
 */
static void
meteor_init ( meteor_reg_t *mtr )
{
	volatile u_long *vbase_addr;
	int i;

	*((volatile u_long *)(mtr->capt_cntrl)) = 0x00000040L;

	vbase_addr = (volatile u_long *) mtr->virt_baseaddr;
	for (i= 0 ; i < NUM_SAA7116_PCI_REGS; i++)
		*vbase_addr++ = saa7116_pci_default[i];

	for (i = 0; i < NUM_SAA7196_I2C_REGS; i++) {
		SAA7196_WRITE(mtr, i, saa7196_i2c_default[i]);
	}
	set_fps(mtr, 30);

}

static	void	met_attach(pcici_t tag, int unit)
{
#ifdef METEOR_IRQ		/* from the meteor.h file */
	u_long old_irq,new_irq;
#endif METEOR_IRQ		/* from the meteor.h file */
	meteor_reg_t *mtr;
	vm_offset_t buf;
	u_long latency;

	if (unit >= NMETEOR) {
		printf("meteor_attach: mx%d: invalid unit number\n");
        	return ;
	}

	mtr = &meteor[unit];
	pci_map_mem(tag, 0x10, &(mtr->virt_baseaddr),
			       &(mtr->phys_baseaddr));
 				/* IIC addres at 0x64 offset bytes */
	mtr->capt_cntrl = mtr->virt_baseaddr + 0x40;
	mtr->stat_reg = mtr->virt_baseaddr + 0x60;
	mtr->iic_virt_addr = mtr->virt_baseaddr + 0x64;

#ifdef METEOR_IRQ		/* from the meteor.h file */
	old_irq = pci_conf_read(tag, PCI_INTERRUPT_REG);
	pci_conf_write(tag, PCI_INTERRUPT_REG, METEOR_IRQ);
	new_irq = pci_conf_read(tag, PCI_INTERRUPT_REG);
	printf("meteor_attach: irq changed from %d to %d\n", (old_irq & 0xff),
							     (new_irq & 0xff));
#endif METEOR_IRQ
	/* set latency timer */
#define PCI_LATENCY_TIMER	0x0c
#define DEF_LATENCY_VALUE	32		/* is this value ok? */
	latency = pci_conf_read(tag, PCI_LATENCY_TIMER);
	latency = (latency >> 8) & 0xff;
	if(bootverbose) {
		if(latency)
			printf("meteor0: PCI bus latency is");
		else
			printf("meteor0: PCI bus latency was 0 changing to");
	}
	if(!latency) {
		latency = DEF_LATENCY_VALUE;
		pci_conf_write(tag, PCI_LATENCY_TIMER,  latency<<8);
	}
	if(bootverbose) {
		printf(" %d.\n", latency);
	}

	meteor_init( mtr );	/* set up saa7116 and saa7196 chips */
	mtr->tag = tag;
				/* setup the interrupt handling routine */
	pci_map_int (tag, meteor_intr, (void*) mtr, &net_imask); 

				/* 640*240*3 round up to nearest pag e*/
	if(METEOR_ALLOC)
		buf = vm_page_alloc_contig(METEOR_ALLOC,
				0x100000, 0xffffffff, PAGE_SIZE);
	else
		buf = NULL;
	if(bootverbose) {
		printf("meteor0: buffer size %d, addr 0x%x\n", METEOR_ALLOC,
			buf);
	}

	mtr->bigbuf = buf;
	mtr->alloc_pages = METEOR_ALLOC_PAGES;
	if(buf != NULL) {
		bzero((caddr_t) buf, METEOR_ALLOC);
		buf = vtophys(buf);
		*((volatile u_long *) mtr->virt_baseaddr) = buf;
					/* 640x480 RGB 16 */
		*((volatile u_long *) mtr->virt_baseaddr + 3) = buf + 0x500;
		*((volatile u_long *) mtr->virt_baseaddr + 36) = 
		*((volatile u_long *) mtr->virt_baseaddr + 35) = buf +
								METEOR_ALLOC;
	}
    	mtr->flags = METEOR_INITALIZED | METEOR_NTSC | METEOR_DEV0 |
							   METEOR_RGB16;
			/* 1 frame of 640x480 RGB 16 */
	mtr->cols = 640;
	mtr->rows = 480;
	mtr->depth = 2;		/* two bytes per pixel */
	mtr->frames = 1;	/* one frame */
#ifdef DEVFS
	mtr->devfs_token = devfs_add_devsw( "/", "meteor", &meteor_cdevsw, unit,
						DV_CHR, 0, 0, 0600);
#endif
}

static void
meteor_reset(meteor_reg_t * const sc)
{

}

/*---------------------------------------------------------
**
**	Meteor character device driver routines
**
**---------------------------------------------------------
*/

#define UNIT(x)	((x) & 0x07)

int
meteor_open(dev_t dev, int flags, int fmt, struct proc *p)
{
	meteor_reg_t *mtr;
	int	unit; 
	int	i;

	unit = UNIT(minor(dev));
	if (unit >= NMETEOR)	/* unit out of range */
		return(ENXIO);

	mtr = &(meteor[unit]);

	if (!(mtr->flags & METEOR_INITALIZED))	/* device not found */
		return(ENXIO);

	if (mtr->flags & METEOR_OPEN)		/* device is busy */
		return(EBUSY);

	mtr->flags |= METEOR_OPEN;
	/*
	 * Make sure that the i2c regs are set the same for each open.
	 */
	for(i=0; i< NUM_SAA7196_I2C_REGS; i++) {
		SAA7196_WRITE(mtr, i, saa7196_i2c_default[i]);
	}

	mtr->fifo_errors = 0;
	mtr->dma_errors = 0;
	mtr->frames_captured = 0;
	mtr->even_fields_captured = 0;
	mtr->odd_fields_captured = 0;
	mtr->proc = (struct proc *)0;
	set_fps(mtr, 30);

	return(0);
}

int
meteor_close(dev_t dev, int flags, int fmt, struct proc *p)
{
	meteor_reg_t *mtr;
	int	unit; 
	int	temp;

	unit = UNIT(minor(dev));
	if (unit >= NMETEOR)	/* unit out of range */
		return(ENXIO);

	mtr = &(meteor[unit]);
	mtr->flags &= ~METEOR_OPEN;

	if(mtr->flags & METEOR_SINGLE)
				/* this should not happen, the read capture 
				  should have completed or in the very least
				  recieved a signal before close is called. */
		wakeup((caddr_t)mtr);	/* continue read */
	/*
	 * Turn off capture mode.
	 */
	*((volatile u_long *) mtr->capt_cntrl) = 0x8ff0;
	mtr->flags &= ~(METEOR_CAP_MASK|METEOR_WANT_MASK);

#ifdef METEOR_DEALLOC_PAGES
	if (mtr->bigbuf != NULL) {
		kmem_free(kernel_map,mtr->bigbuf,(mtr->alloc_pages*PAGE_SIZE));
		mtr->bigbuf = NULL;
		mtr->alloc_pages = 0;
	}
#else
#ifdef METEOR_DEALLOC_ABOVE
	if (mtr->bigbuf != NULL && mtr->alloc_pages > METEOR_DEALLOC_ABOVE) {
		temp = METEOR_DEALLOC_ABOVE - mtr->alloc_pages;
		kmem_free(kernel_map,
			  mtr->bigbuf+((mtr->alloc_pages - temp) * PAGE_SIZE),
			  (temp * PAGE_SIZE));
		mtr->alloc_pages = METEOR_DEALLOC_ABOVE;
	}
#endif
#endif

	return(0);
}

static void
start_capture(meteor_reg_t *mtr, unsigned type)
{
volatile u_long *cap = (volatile u_long *)mtr->capt_cntrl;
volatile u_long *p   =(volatile u_long *)mtr->virt_baseaddr;

#ifdef RANGE_BUG_FIXED
#define RANGE_ENABLE 0x8000
#else
#define RANGE_ENABLE 0x0000
#endif
	mtr->flags |= type;
	switch(mtr->flags & METEOR_ONLY_FIELDS_MASK) {
	case METEOR_ONLY_EVEN_FIELDS:
		mtr->flags |= METEOR_WANT_EVEN;
		if(type == METEOR_SINGLE)
			*cap = 0x0ff4 | RANGE_ENABLE ;
		else
			*cap = 0x0ff1 | RANGE_ENABLE;
		break;
	case METEOR_ONLY_ODD_FIELDS:
		mtr->flags |= METEOR_WANT_ODD;
		if(type == METEOR_SINGLE)
			*cap = 0x0ff8 | RANGE_ENABLE;
		else
			*cap = 0x0ff2 | RANGE_ENABLE;
		break;
	default:
		mtr->flags |= METEOR_WANT_MASK;
		if(type == METEOR_SINGLE)
			*cap = 0x0ffc | RANGE_ENABLE;
		else
			*cap = 0x0ff3 | RANGE_ENABLE;
		break;
	}
}

int
meteor_read(dev_t dev, struct uio *uio, int ioflag)
{
	meteor_reg_t *mtr;
	int	unit; 
	int	status;
	int	count;

	unit = UNIT(minor(dev));
	if (unit >= NMETEOR)	/* unit out of range */
		return(ENXIO);

	mtr = &(meteor[unit]);
	if (mtr->bigbuf == NULL)/* no frame buffer allocated (ioctl failed) */
		return(ENOMEM);

	if (mtr->flags & METEOR_CAP_MASK)
		return(EIO);		/* already capturing */

	count = mtr->rows * mtr->cols * mtr->depth;
	if (uio->uio_iov->iov_len < count)
		return(EINVAL);

	/* Start capture */
	start_capture(mtr, METEOR_SINGLE);

	status=tsleep((caddr_t)mtr, METPRI, "capturing", 0);
	if (!status) 		/* successful capture */
		status = uiomove((caddr_t)mtr->bigbuf, count, uio);
	else
		printf ("meteor_read: tsleep error %d\n", status);

	mtr->flags &= ~(METEOR_SINGLE | METEOR_WANT_MASK);

	return(status);
}

int
meteor_write(dev_t dev, struct uio *uio, int ioflag)
{
	return(0);
}

int
meteor_ioctl(dev_t dev, int cmd, caddr_t arg, int flag, struct proc *pr)
{
	int	error;  
	int	unit;   
	int	temp;
	meteor_reg_t *mtr;
	struct meteor_counts *cnt;
	struct meteor_geomet *geo;
	struct meteor_mem *mem;
	struct meteor_capframe *frame;
	volatile u_long *p;
	vm_offset_t buf;

	error = 0;

	if (!arg) return(EINVAL);
	unit = UNIT(minor(dev));
	if (unit >= NMETEOR)	/* unit out of range */
		return(ENXIO);

	mtr = &(meteor[unit]);

	switch (cmd) {
	case METEORSFPS:
		set_fps(mtr, *(u_short *)arg);
		break;
	case METEORGFPS:
		*(u_short *)arg = mtr->fps;
		break;
	case METEORSSIGNAL:
		mtr->signal = *(int *) arg;
		mtr->proc = pr;
		break;
	case METEORGSIGNAL:
		*(int *)arg = mtr->signal;
		break;
	case METEORSTATUS:	/* get 7196 status */
		temp = 0;
		SAA7196_WRITE(mtr, 0x0d, SAA7196_REG(mtr, 0x0d) | 0x02);
		SAA7196_READ(mtr);
		temp |= ((*((volatile u_long *)mtr->stat_reg)) & 0xff000000L) >> 24;
		SAA7196_WRITE(mtr, 0x0d, SAA7196_REG(mtr, 0x0d) & 0x02);
		SAA7196_READ(mtr);
		temp |= ((*((volatile u_long *)mtr->stat_reg)) & 0xff000000L) >> 16;
		*(u_short *)arg = temp;
		break;
	case METEORSHUE:	/* set hue */
		SAA7196_WRITE(mtr, 0x07, *(char *)arg);
		break;
	case METEORGHUE:	/* get hue */
		*(char *)arg = SAA7196_REG(mtr, 0x07);
		break;
	case METEORSCHCV:	/* set chrominance gain */
		SAA7196_WRITE(mtr, 0x11, *(char *)arg);
		break;
	case METEORGCHCV:	/* get chrominance gain */
		*(char *)arg = SAA7196_REG(mtr, 0x11);
		break;
	case METEORSINPUT:	/* set input device */
		switch(*(unsigned long *)arg & METEOR_DEV_MASK) {
		case 0:			/* default */
		case METEOR_INPUT_DEV0:
			mtr->flags = (mtr->flags & ~METEOR_DEV_MASK)
				| METEOR_DEV0;
			
			SAA7196_WRITE(mtr, 0x0e,
				(SAA7196_REG(mtr, 0x0e) & ~0x3) | 0x0);
			break;
		case METEOR_INPUT_DEV1:
			mtr->flags = (mtr->flags & ~METEOR_DEV_MASK)
					       | METEOR_DEV1;
			SAA7196_WRITE(mtr, 0x0e,
				(SAA7196_REG(mtr, 0x0e) & ~0x3) | 0x1);
			break;
		case METEOR_INPUT_DEV2:
			mtr->flags = (mtr->flags & ~METEOR_DEV_MASK)
					       | METEOR_DEV2;
			SAA7196_WRITE(mtr, 0x0e,
				(SAA7196_REG(mtr, 0x0e) & ~0x3) | 0x2);
			break;
		case METEOR_INPUT_DEV3:
			mtr->flags = (mtr->flags & ~METEOR_DEV_MASK)
					       | METEOR_DEV3;
			SAA7196_WRITE(mtr, 0x0e,
				(SAA7196_REG(mtr, 0x0e) | 0x3));
			break;
		default:
			return EINVAL;
		}
		break;
	case METEORGINPUT:	/* get input device */
		*(u_long *)arg = mtr->flags & METEOR_DEV_MASK;
		break;
	case METEORSFMT:	/* set input format */
		switch(*(unsigned long *)arg & METEOR_FORM_MASK ) {
		case 0:			/* default */
		case METEOR_FMT_NTSC:
			mtr->flags = (mtr->flags & ~METEOR_FORM_MASK) |
				METEOR_NTSC;
			SAA7196_WRITE(mtr, 0x0d, 
				(SAA7196_REG(mtr, 0x0d) & ~0x01));
			SAA7196_WRITE(mtr, 0x0f,
				(SAA7196_REG(mtr, 0x0f) & ~0xe0) | 0x40);
			SAA7196_WRITE(mtr, 0x22, 0x80);
			SAA7196_WRITE(mtr, 0x24, 
				(SAA7196_REG(mtr, 0x24) & ~0x0c) | 0x08);
			SAA7196_WRITE(mtr, 0x26, 0xf0);
			SAA7196_WRITE(mtr, 0x28, 
				(SAA7196_REG(mtr, 0x28) & ~0x0c)) ;
		break;
		case METEOR_FMT_PAL:
			mtr->flags = (mtr->flags & ~METEOR_FORM_MASK) |
				METEOR_PAL;
			SAA7196_WRITE(mtr, 0x0d, 
				(SAA7196_REG(mtr, 0x0d) & ~0x01));
			SAA7196_WRITE(mtr, 0x0f, 
				(SAA7196_REG(mtr, 0x0f) & ~0xe0));
			SAA7196_WRITE(mtr, 0x22, 0x00);
			SAA7196_WRITE(mtr, 0x24, 
				(SAA7196_REG(mtr, 0x24) | 0x0c));
			SAA7196_WRITE(mtr, 0x26, 0x20);
			SAA7196_WRITE(mtr, 0x28, 
				(SAA7196_REG(mtr, 0x28) & ~0x0c) | 0x04) ;
		break;
		case METEOR_FMT_SECAM:
			mtr->flags = (mtr->flags & ~METEOR_FORM_MASK) |
				METEOR_SECAM;
			SAA7196_WRITE(mtr, 0x0d, 
				(SAA7196_REG(mtr, 0x0d) & ~0x01) | 0x1);
			SAA7196_WRITE(mtr, 0x0f, 
				(SAA7196_REG(mtr, 0x0f) & ~0xe0) | 0x20);
			SAA7196_WRITE(mtr, 0x22, 0x00);
			SAA7196_WRITE(mtr, 0x24, 
				(SAA7196_REG(mtr, 0x24) | 0x0c));
			SAA7196_WRITE(mtr, 0x26, 0x20);
			SAA7196_WRITE(mtr, 0x28, 
				(SAA7196_REG(mtr, 0x28) & ~0x0c) | 0x04) ;
		break;
		case METEOR_FMT_AUTOMODE:
			mtr->flags = (mtr->flags & ~METEOR_FORM_MASK) |
				METEOR_AUTOMODE;
			SAA7196_WRITE(mtr, 0x0d, 
				(SAA7196_REG(mtr, 0x0d) & ~0x01));
			SAA7196_WRITE(mtr, 0x0f, 
				(SAA7196_REG(mtr, 0x0f) & ~0xe0) | 0x80);
		break;
		default:
			return EINVAL;
		}
		break;
	case METEORGFMT:	/* get input format */
		*(u_long *)arg = mtr->flags & METEOR_FORM_MASK;
		break;
	case METEORCAPTUR:
		temp = mtr->flags;
		switch (*(int *) arg) {
		case METEOR_CAP_SINGLE:
			if (mtr->bigbuf==NULL)	/* no frame buffer allocated */
				return(ENOMEM);

			if (temp & METEOR_CAP_MASK)
				return(EIO);		/* already capturing */

			start_capture(mtr, METEOR_SINGLE);

			/* wait for capture to complete */
			error=tsleep((caddr_t)mtr, METPRI, "capturing", 0);
			if(error)
				printf("meteor_ioctl: tsleep error %d\n",
						error);
			mtr->flags &= ~(METEOR_SINGLE|METEOR_WANT_MASK);
			break;
		case METEOR_CAP_CONTINOUS:
			if (mtr->bigbuf==NULL)	/* no frame buffer allocated */
				return(ENOMEM);

			if (temp & METEOR_CAP_MASK)
				return(EIO);		/* already capturing */

			start_capture(mtr, METEOR_CONTIN);

			break;
		case METEOR_CAP_STOP_CONT:
			if (mtr->flags & METEOR_CONTIN) {
							/* turn off capture */
				*((volatile u_long *) mtr->capt_cntrl) = 0x8ff0;
				mtr->flags &= ~(METEOR_CONTIN|METEOR_WANT_MASK);
			}
			break;
	
		default:
			error = EINVAL;
			break;
		}
		break;
	case METEORCAPFRM:
	    frame = (struct meteor_capframe *) arg;
	    if (!frame) 
		return(EINVAL);
	    switch (frame->command) {
	    case METEOR_CAP_N_FRAMES:
		if (mtr->flags & METEOR_CAP_MASK)
			return(EIO);
		if (mtr->flags & (METEOR_YUV_PLANER | METEOR_YUV_422)) /* XXX*/
			return(EINVAL); /* should fix intr so we allow these */
		if (mtr->bigbuf == NULL)
			return(ENOMEM);
		if ((mtr->frames < 2) ||
		    (frame->lowat < 1 || frame->lowat >= mtr->frames) ||
		    (frame->hiwat < 1 || frame->hiwat >= mtr->frames) ||
		    (frame->lowat > frame->hiwat)) 
			return(EINVAL);
			/* meteor_mem structure is on the page after the data */
		mem = mtr->mem = (struct meteor_mem *) (mtr->bigbuf +
				((mtr->rows*mtr->cols * mtr->depth *
				mtr->frames+PAGE_SIZE-1)/PAGE_SIZE)*PAGE_SIZE);
		mtr->current = 1;
		mtr->synch_wait = 0;
        	mem->num_bufs = mtr->frames;
		mem->frame_size=
			mtr->frame_size = mtr->rows * mtr->cols * mtr->depth;
                /* user and kernel change these */ 
		mem->lowat = frame->lowat;
		mem->hiwat = frame->hiwat;
        	mem->active = 0;
        	mem->num_active_bufs = 0;
		/* Start capture */
		start_capture(mtr, METEOR_SYNCAP);
		break;
	    case METEOR_CAP_STOP_FRAMES:
		if (mtr->flags & METEOR_SYNCAP) {
						/* turn off capture */
			*((volatile u_long *) mtr->capt_cntrl) = 0x8ff0;
			mtr->flags &= ~(METEOR_SYNCAP|METEOR_WANT_MASK);
		}
		break;
	    case METEOR_HALT_N_FRAMES:
		if(mtr->flags & METEOR_SYNCAP) {
			*((volatile u_long *) mtr->capt_cntrl) = 0x8ff0;
			mtr->flags &= ~(METEOR_WANT_MASK);
		}
		break;
	    case METEOR_CONT_N_FRAMES:
		if(!(mtr->flags & METEOR_SYNCAP)) {
			error = EINVAL;
			break;
		}
		start_capture(mtr, METEOR_SYNCAP);
		break;
	    default:
		error = EINVAL;
		break;
	    }
	    break;
 
	case METEORSETGEO:
		geo = (struct meteor_geomet *) arg;

		/* Either even or odd, if even & odd, then these a zero */
		if((geo->oformat & METEOR_GEO_ODD_ONLY) &&
			(geo->oformat & METEOR_GEO_EVEN_ONLY)) {
			printf("meteor ioctl: Geometry odd or even only.\n");
			return EINVAL;
		}
		/* set/clear even/odd flags */
		if(geo->oformat & METEOR_GEO_ODD_ONLY)
			mtr->flags |= METEOR_ONLY_ODD_FIELDS;
		else
			mtr->flags &= ~METEOR_ONLY_ODD_FIELDS;
		if(geo->oformat & METEOR_GEO_EVEN_ONLY)
			mtr->flags |= METEOR_ONLY_EVEN_FIELDS;
		else
			mtr->flags &= ~METEOR_ONLY_EVEN_FIELDS;

		/* can't change parameters while capturing */
		if (mtr->flags & METEOR_CAP_MASK)
			return(EBUSY);

		if ((geo->columns & 0x3fe) != geo->columns) {
			printf(
			"meteor ioctl: %d: columns too large or not even.\n",
				geo->columns);
			error = EINVAL;
		}
		if (((geo->rows & 0x7fe) != geo->rows) ||
			((geo->oformat & METEOR_GEO_FIELD_MASK) &&
				((geo->rows & 0x3fe) != geo->rows)) ) {
			printf(
			"meteor ioctl: %d: rows too large or not even.\n",
				geo->rows);
			error = EINVAL;
		}
		if (geo->frames > 32) {
			printf("meteor ioctl: too many frames.\n");
			error = EINVAL;
		}
		if(error) return error;

		if (temp=geo->rows * geo->columns * geo->frames * 2) {
			if (geo->oformat & METEOR_GEO_RGB24) temp = temp * 2;

		   	/* meteor_mem structure for SYNC Capture */
		   	if (geo->frames > 1) temp += PAGE_SIZE;

		   	temp = (temp + PAGE_SIZE -1)/PAGE_SIZE;
		   	if (temp > mtr->alloc_pages) {
				buf = vm_page_alloc_contig((temp*PAGE_SIZE),
					0x100000, 0xffffffff, PAGE_SIZE);
				if(buf != NULL) {
					kmem_free(kernel_map, mtr->bigbuf,
					  (mtr->alloc_pages * PAGE_SIZE));
					mtr->bigbuf = buf;
					mtr->alloc_pages = temp;
					printf(
			"meteor_ioctl: Allocating %d bytes\n", temp*PAGE_SIZE);
				} else {
		     			printf(
			"meteor_ioctl: couldn't allocate %d byte buffer.\n",
					temp*PAGE_SIZE);
					error = ENOMEM;
				}
		   	}
		}
		if(error) return error;

		mtr->rows = geo->rows;
		mtr->cols = geo->columns;
		mtr->frames = geo->frames;

		p = (volatile u_long *) mtr->virt_baseaddr;
		buf = vtophys(mtr->bigbuf);

		/* set defaults and end of buffer locations */
		*(p+0)  = buf;	/* DMA 1 even    */
		*(p+1)  = buf;	/* DMA 2 even    */
		*(p+2)  = buf;	/* DMA 3 even    */
		*(p+3)  = buf;	/* DMA 1 odd     */
		*(p+4)  = buf;	/* DMA 2 odd	 */
		*(p+5)  = buf;	/* DMA 3 odd     */
		*(p+6)  = 0;	/* Stride 1 even */
		*(p+7)  = 0;	/* Stride 2 even */
		*(p+8)  = 0;	/* Stride 3 even */
		*(p+9)  = 0;	/* Stride 1 odd  */
		*(p+10) = 0;	/* Stride 2 odd  */
		*(p+11) = 0;	/* Stride 3 odd  */
				/* set end of DMA location, even/odd */
#ifdef RANGE_BUG_FIXED
		*(p+35) = *(p+36) = buf + mtr->alloc_pages * PAGE_SIZE;
#else
		/*
		 * There is a bug with the range end on the current 
		 * 7116 chip.  The 23rd bit is ignored and set to zero
		 * for some reason which makes range checking useless.
		 */
		*(p+35) = *(p+36) = 0;
#endif

		switch (geo->oformat & METEOR_GEO_OUTPUT_MASK) {
		case 0:			/* default */
		case METEOR_GEO_RGB16:
			mtr->depth = 2;
			mtr->flags &= ~METEOR_OUTPUT_FMT_MASK;
			mtr->flags |= METEOR_RGB16;
		      	/* recal stride and starting point */
			switch(mtr->flags & METEOR_ONLY_FIELDS_MASK) {
			case METEOR_ONLY_ODD_FIELDS:
				*(p+3) = buf;		/*dma 1 o */
				SAA7196_WRITE(mtr, 0x20, 0xd0);
				break;
			case METEOR_ONLY_EVEN_FIELDS:
				*(p+0) = buf;		/*dma 1 e */
				SAA7196_WRITE(mtr, 0x20, 0xf0);
				break;
			default: /* interlaced even/odd */
				*(p+0) = buf;		
				*(p+3) = buf + mtr->cols * mtr->depth;
				*(p+6) = *(p+9) = mtr->cols * mtr->depth;
				SAA7196_WRITE(mtr, 0x20, 0x90);
				break;
			}
	 		*(p+12) = *(p+13) = 0xeeeeee01;	/* routes */
			break;
		case METEOR_GEO_RGB24:
			mtr->depth = 4;
			mtr->flags &= ~METEOR_OUTPUT_FMT_MASK;
			mtr->flags |= METEOR_RGB24;
			/* recal stride and starting point */
			switch(mtr->flags & METEOR_ONLY_FIELDS_MASK) {
			case METEOR_ONLY_ODD_FIELDS:
					*(p+3) = buf;		/*dma 1 o */
					SAA7196_WRITE(mtr, 0x20, 0xd2);
				break;
			case METEOR_ONLY_EVEN_FIELDS:
					*(p+0) = buf;		/*dma 1 e */
					SAA7196_WRITE(mtr, 0x20, 0xf2);
				break;
			default: /* interlaced even/odd */
				*(p+0) = buf;
				*(p+3) = buf + mtr->cols * mtr->depth;
				*(p+6) = *(p+9) = mtr->cols * mtr->depth;
				SAA7196_WRITE(mtr, 0x20, 0x92);
				break;
			}
			*(p+12) = *(p+13) = 0x39393900;	/* routes */
			break;
		case METEOR_GEO_YUV_PLANER:
			mtr->depth = 2;
			mtr->flags &= ~METEOR_OUTPUT_FMT_MASK;
			mtr->flags |= METEOR_YUV_PLANER;
			/* recal stride and starting point */
			temp = mtr->rows * mtr->cols;	/* compute frame size */
			switch(mtr->flags & METEOR_ONLY_FIELDS_MASK) {
			case METEOR_ONLY_ODD_FIELDS:
				*(p+3) = buf;		/* Y Odd */
				*(p+4) = buf + temp;	/* U Odd */
				temp >>= 1;
				*(p+5) = *(p+4) + temp; /* V Odd */
				SAA7196_WRITE(mtr, 0x20, 0xd1);
				break;
			case METEOR_ONLY_EVEN_FIELDS:
				*(p+0) = buf;		/* Y Even */
				*(p+1) = buf + temp;	/* U Even */
				temp >>= 1;
				*(p+2) = *(p+1) + temp;	/* V Even */
				SAA7196_WRITE(mtr, 0x20, 0xf1);
				break;
			default: /* interlaced even/odd */
				*(p+0) = buf;			/* Y Even */
				*(p+1) = buf + temp;		/* U Even */
				temp >>= 2;
				*(p+2) = *(p+1) + temp;		/* V Even */
				*(p+3) = *(p+0) + mtr->cols;	/* Y Odd */
				*(p+4) = *(p+2) + temp;		/* U Odd */
				*(p+5) = *(p+4) + temp;		/* V Odd */
				*(p+6) = *(p+9) = mtr->cols;	/* Y Stride */
				SAA7196_WRITE(mtr, 0x20, 0x91);
				break;
			}
			*(p+12) = *(p+13) = 0xaaaaffc1;	/* routes */
			break;
		case METEOR_GEO_YUV_422:/* same as planer, different uv order */
			mtr->depth = 2;
			mtr->flags &= ~METEOR_OUTPUT_FMT_MASK;
			mtr->flags |= METEOR_YUV_422;
			temp = mtr->rows * mtr->cols;	/* compute frame size */
			switch(mtr->flags & METEOR_ONLY_FIELDS_MASK) {
			case METEOR_ONLY_ODD_FIELDS:
				*(p+3) = buf;
				*(p+4) = buf + temp;
				*(p+5) = *(p+4) + (temp >> 1);
				SAA7196_WRITE(mtr, 0x20, 0xd1);
				break;
			case METEOR_ONLY_EVEN_FIELDS:
				*(p+0) = buf;
				*(p+1) = buf + temp;
				*(p+2) = *(p+1) + (temp >> 1);
				SAA7196_WRITE(mtr, 0x20, 0xf1);
				break;
			default: /* interlaced even/odd */
				*(p+0) = buf;			/* Y even */
				*(p+1) = buf + temp;		/* U even */
				*(p+2) = *(p+1) + (temp >> 1);	/* V even */
				*(p+3) = *(p+0) + mtr->cols;	/* Y odd */
				temp = mtr->cols >> 1;
				*(p+4) = *(p+1) + temp;		/* U odd */
				*(p+5) = *(p+2) + temp;		/* V odd */
				*(p+6) = *(p+9)  = mtr->cols;	/* Y stride */
				*(p+7) = *(p+10) = temp;	/* U stride */
				*(p+8) = *(p+11) = temp;	/* V stride */
				SAA7196_WRITE(mtr, 0x20, 0x91);
				break;
			}
			*(p+12) = *(p+13) = 0xaaaaffc1;	/* routes */
			break;
		case METEOR_GEO_YUV_PACKED:
			mtr->depth = 2;
			mtr->flags &= ~METEOR_OUTPUT_FMT_MASK;
			mtr->flags |= METEOR_YUV_PACKED;
			/* recal stride and odd starting point */
			switch(mtr->flags & METEOR_ONLY_FIELDS_MASK) {
			case METEOR_ONLY_ODD_FIELDS:
				*(p+3) = buf;
				SAA7196_WRITE(mtr, 0x20, 0xd1);
				break;
			case METEOR_ONLY_EVEN_FIELDS:
				*(p+0) = buf;
				SAA7196_WRITE(mtr, 0x20, 0xf1);
				break;
			default: /* interlaced even/odd */
				*(p+0) = buf;
				*(p+3) = buf + mtr->cols * mtr->depth;
				*(p+6) = *(p+9) = mtr->cols * mtr->depth;
				SAA7196_WRITE(mtr, 0x20, 0x91);
				break;
			}
			*(p+12) = *(p+13) = 0xeeeeee41;	/* routes */
			break;
		default:
			error = EINVAL;	/* invalid argument */
			printf("meteor_ioctl: invalid output format\n");
			break;
		}
		/* set cols */
		SAA7196_WRITE(mtr, 0x21, mtr->cols & 0xff);
		SAA7196_WRITE(mtr, 0x24,
				((SAA7196_REG(mtr, 0x24) & ~0x03) |
				((mtr->cols >> 8) & 0x03)));
		/* set rows */
		if(mtr->flags & METEOR_ONLY_FIELDS_MASK) {
			SAA7196_WRITE(mtr, 0x25, ((mtr->rows) & 0xff));
			SAA7196_WRITE(mtr, 0x28,
					((SAA7196_REG(mtr, 0x28) & ~0x03) |
					((mtr->rows >> 8) & 0x03)));
		} else {	/* Interlaced */
			SAA7196_WRITE(mtr, 0x25, ((mtr->rows >> 1) & 0xff));
			SAA7196_WRITE(mtr, 0x28,
					((SAA7196_REG(mtr, 0x28) & ~0x03) |
					((mtr->rows >> 9) & 0x03)));
		}
		/* set signed/unsigned chrominance */
		SAA7196_WRITE(mtr, 0x30, (SAA7196_REG(mtr, 0x30) & ~0x10) |
				((geo->oformat&METEOR_GEO_UNSIGNED)?0:0x10));
		break;
	case METEORGETGEO:
		geo = (struct meteor_geomet *) arg;
		geo->rows = mtr->rows;
		geo->columns = mtr->cols;
		geo->frames = mtr->frames;
		geo->oformat = (mtr->flags & METEOR_OUTPUT_FMT_MASK) |
			       (mtr->flags & METEOR_ONLY_FIELDS_MASK) |
			       (SAA7196_REG(mtr, 0x30) & 0x10 ? 
				0:METEOR_GEO_UNSIGNED);
		break;
	case METEORSCOUNT:	/* (re)set error counts */
		cnt = (struct meteor_counts *) arg;
		mtr->fifo_errors = cnt->fifo_errors;
		mtr->dma_errors = cnt->dma_errors;
		mtr->frames_captured = cnt->frames_captured;
		mtr->even_fields_captured = cnt->even_fields_captured;
		mtr->odd_fields_captured = cnt->odd_fields_captured;
		break;
	case METEORGCOUNT:	/* get error counts */
		cnt = (struct meteor_counts *) arg;
		cnt->fifo_errors = mtr->fifo_errors;
		cnt->dma_errors = mtr->dma_errors;
		cnt->frames_captured = mtr->frames_captured;
		cnt->even_fields_captured = mtr->even_fields_captured;
		cnt->odd_fields_captured = mtr->odd_fields_captured;
		break;
	default:
		printf("meteor_ioctl: invalid ioctl request\n");
		error = ENOTTY;
		break;
	}
	return(error);
}

int
meteor_mmap(dev_t dev, int offset, int nprot)
{

	int	unit;
	meteor_reg_t *mtr;

	unit = UNIT(minor(dev));
	if (unit >= NMETEOR)		/* at this point could this happen? */
		return(-1);

	mtr = &(meteor[unit]);


	if(nprot & PROT_EXEC)
		return -1;

	if(offset >= mtr->alloc_pages * PAGE_SIZE)
		return -1;

	return i386_btop(vtophys(mtr->bigbuf) + offset);
}


#if !defined(METEOR_FreeBSD_210)	/* XXX */
static meteor_devsw_installed = 0;

static void 	meteor_drvinit(void *unused)
{
	dev_t dev;

	if( ! meteor_devsw_installed ) {
		dev = makedev(CDEV_MAJOR, 0);
		cdevsw_add(&dev,&meteor_cdevsw, NULL);
		meteor_devsw_installed = 1;
    	}
}

SYSINIT(meteordev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,meteor_drvinit,NULL)
#endif

#endif /* NMETEOR > 0 */