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53ac6efbd8
That's EVERY SINGLE driver that has an entry in conf.c.. my next trick will be to define cdevsw[] and bdevsw[] as empty arrays and remove all those DAMNED defines as well.. Each of these drivers has a SYSINIT linker set entry that comes in very early.. and asks teh driver to add it's own entry to the two devsw[] tables. some slight reworking of the commits from yesterday (added the SYSINIT stuff and some usually wrong but token DEVFS entries to all these devices. BTW does anyone know where the 'ata' entries in conf.c actually reside? seems we don't actually have a 'ataopen() etc... If you want to add a new device in conf.c please make sure I know so I can keep it up to date too.. as before, this is all dependent on #if defined(JREMOD) (and #ifdef DEVFS in parts)
906 lines
25 KiB
C
906 lines
25 KiB
C
/* asc.c - device driver for hand scanners
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*
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* Current version supports:
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*
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* - Trust AmiScan BW (GI1904 chipset)
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*
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* Copyright (c) 1995 Gunther Schadow. All rights reserved.
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* Copyright (c) 1995 Luigi Rizzo. 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
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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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* 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Gunther Schadow
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* and Luigi Rizzo.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without 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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/*
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* $Id: asc.c,v 1.6 1995/11/28 09:40:39 julian Exp $
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*/
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#include "asc.h"
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#if NASC > 0
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#ifdef FREEBSD_1_X
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#include "param.h"
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#include "systm.h"
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#include "proc.h"
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#include "user.h"
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#include "buf.h"
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#include "malloc.h"
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#include "kernel.h"
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#include "ioctl.h"
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#include "tty.h"
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#include "uio.h"
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#include "syslog.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/isa/ascreg.h"
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#include "machine/asc_ioctl.h"
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#else
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/user.h>
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#include <sys/buf.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/ioctl.h>
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#include <sys/tty.h>
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#include <sys/uio.h>
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#include <sys/syslog.h>
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#include <machine/asc_ioctl.h>
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#include <sys/devconf.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/isa/ascreg.h>
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#ifdef JREMOD
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#ifdef DEVFS
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#include <sys/devfsext.h>
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#endif /*DEVFS*/
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#define CDEV_MAJOR 71
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#endif /*JREMOD*/
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#endif /* FREEBSD_1_X */
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/***
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*** CONSTANTS & DEFINES
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***
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***/
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#define PROBE_FAIL 0
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#define PROBE_SUCCESS 5 /* number of io ports... */
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#define SUCCESS 0
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#define FAIL -1
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#define INVALID FAIL
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#define DMA1_READY 0x08
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#define ASCDEBUG
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#ifdef ASCDEBUG
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# define lprintf if(scu->flags & DEBUG) printf
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#else
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# define lprintf (void)
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#endif
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#define TIMEOUT (hz*15) /* timeout while reading a buffer - default value */
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#define ASCPRI PRIBIO /* priority while reading a buffer */
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/***
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*** LAYOUT OF THE MINOR NUMBER
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***/
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#define UNIT_MASK 0xc0 /* unit asc0 .. asc3 */
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#define UNIT(x) (x >> 6)
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#define DBUG_MASK 0x20
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#define FRMT_MASK 0x18 /* output format */
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#define FRMT_RAW 0x00 /* output bits as read from scanner */
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#define FRMT_GRAY 0x10 /* output graymap (not implemented yet) */
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#define FRMT_PBM 0x08 /* output pbm format */
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#define FRMT_PGM 0x18
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/***
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*** THE GEMOMETRY TABLE
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***/
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static const struct asc_geom {
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int dpi; /* dots per inch */
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int dpl; /* dots per line */
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int bpl; /* bytes per line */
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int g_res; /* get resolution value (ASC_STAT) */
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} geomtab[] = {
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{ 800, 3312, 414, ASC_RES_800},
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{ 700, 2896, 362, ASC_RES_700},
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{ 600, 2480, 310, ASC_RES_600},
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{ 500, 1656, 258, ASC_RES_500},
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{ 400, 1656, 207, ASC_RES_400},
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{ 300, 1240, 155, ASC_RES_300},
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{ 200, 832, 104, ASC_RES_200},
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{ 100, 416, 52, ASC_RES_100},
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{ INVALID, 416, 52, INVALID } /* terminator */
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};
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/***
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*** THE TABLE OF UNITS
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***/
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struct _sbuf {
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size_t size;
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size_t rptr;
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size_t wptr; /* only changed in ascintr */
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size_t count;
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char *base;
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};
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struct asc_unit {
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int base; /* base address */
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int dma_num; /* dma number */
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char dma_byte; /* mask of byte for setting DMA value */
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char int_byte; /* mask of byte for setting int value */
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char cfg_byte; /* mirror of byte written to config reg (ASC_CFG). */
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char cmd_byte; /* mirror of byte written to cmd port (ASC_CMD)*/
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int flags;
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#define ATTACHED 0x01
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#define OPEN 0x02
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#define READING 0x04
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#define DMA_ACTIVE 0x08
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#define SLEEPING 0x10
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#define SEL_COLL 0x20
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#define PBM_MODE 0x40
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#define DEBUG 0x80
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int geometry; /* resolution as geomtab index */
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int linesize; /* length of one scan line (from geom.table) */
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int blen; /* length of buffer in lines */
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int btime; /* timeout of buffer in seconds/hz */
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struct _sbuf sbuf;
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long icnt; /* interrupt count XXX for debugging */
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#ifdef FREEBSD_1_X
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pid_t selp; /* select pointer... */
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#else
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struct selinfo selp;
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#endif
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int height; /* height, for pnm modes */
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size_t bcount; /* bytes to read, for pnm modes */
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} unittab[NASC];
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/*** I could not find a reasonable buffer size limit other than by
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*** experiments. MAXPHYS is obviously too much, while DEV_BSIZE and
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*** PAGE_SIZE are really too small. There must be something wrong
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*** with isa_dmastart/isa_dmarangecheck HELP!!!
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***/
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#define MAX_BUFSIZE 0x3000
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#define DEFAULT_BLEN 20
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/***
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*** THE PER-DRIVER RECORD FOR ISA.C
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***/
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int ascprobe (struct isa_device *isdp);
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int ascattach(struct isa_device *isdp);
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struct isa_driver ascdriver = { ascprobe, ascattach, "asc" };
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#ifndef FREEBSD_1_X
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struct asc_softc {
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struct isa_device *dev;
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} asc_softc[NASC];
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static struct kern_devconf kdc_asc[NASC] = { {
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0, 0, 0, /* filled in by dev_attach */
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"asc", 0, { MDDT_ISA, 0, "tty" },
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isa_generic_externalize, 0, 0, ISA_EXTERNALLEN,
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&kdc_isa0, /* parent */
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0, /* parentdata */
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DC_UNCONFIGURED, /* state */
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"GI1904 Hand scanner",
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DC_CLS_MISC
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} };
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static inline void
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asc_registerdev(struct isa_device *id)
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{
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if(id->id_unit)
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kdc_asc[id->id_unit] = kdc_asc[0];
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kdc_asc[id->id_unit].kdc_unit = id->id_unit;
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kdc_asc[id->id_unit].kdc_isa = id;
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dev_attach(&kdc_asc[id->id_unit]);
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}
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#endif /* ! FREEBSD_1_X */
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/***
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*** LOCALLY USED SUBROUTINES
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***
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***/
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/***
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*** get_resolution
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*** read resolution from the scanner
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***/
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static void
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get_resolution(struct asc_unit *scu)
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{
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int res, i, delay;
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res=0;
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scu->cmd_byte = ASC_STANDBY;
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outb(ASC_CMD, scu->cmd_byte);
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tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascres", hz/10);
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for(delay= 100; (res=inb(ASC_STAT)) & ASC_RDY_FLAG; delay--)
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{
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i = tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascres0", 1);
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if ( ( i == 0 ) || ( i == EWOULDBLOCK ) )
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i = SUCCESS;
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else
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break;
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}
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if (delay==0) {
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lprintf("asc.get_resolution: timeout completing command\n");
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return /* -1 */;
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}
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/* ... actual read resolution... */
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res &= ASC_RES_MASK;
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for (i=0; geomtab[i].dpi != INVALID; i++) {
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if (geomtab[i].g_res == res) break;
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}
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if (geomtab[i].dpi==INVALID) {
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scu->geometry= i; /* INVALID; */
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lprintf("asc.get_resolution: wrong resolution\n");
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} else {
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lprintf("asc.get_resolution: %d dpi\n",geomtab[i].dpi);
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scu->geometry = i;
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}
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scu->linesize = geomtab[scu->geometry].bpl;
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scu->height = geomtab[scu->geometry].dpl; /* default... */
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}
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/***
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*** buffer_allocate
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*** allocate/reallocate a buffer
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***/
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static int
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buffer_allocate(struct asc_unit *scu)
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{
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size_t size, size1;
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size = scu->blen * scu->linesize;
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lprintf("asc.buffer_allocate: need 0x%x bytes\n", size);
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if ( size > MAX_BUFSIZE ) {
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size1=size;
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size= ( (MAX_BUFSIZE+scu->linesize-1) / scu->linesize)*scu->linesize;
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lprintf("asc.buffer_allocate: 0x%x bytes are too much, try 0x%x\n",
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size1, size);
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/* return ENOMEM; */
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}
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if ( scu->sbuf.base != NULL )
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if ( scu->sbuf.size == size ) {
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lprintf("asc.buffer_allocate: keep old buffer\n");
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return SUCCESS;
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} else {
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lprintf("asc.buffer_allocate: release old buffer\n");
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free( scu->sbuf.base, M_DEVBUF );
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}
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scu->sbuf.base = (char *)malloc(size, M_DEVBUF, M_WAITOK);
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if ( scu->sbuf.base == NULL ) {
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lprintf("asc.buffer_allocate: "
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"buffer allocatation failed for size = 0x%x\n",
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scu->sbuf.size);
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return ENOMEM;
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}
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scu->sbuf.size = size;
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scu->sbuf.rptr = 0;
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scu->sbuf.wptr = 0;
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scu->sbuf.count = 0; /* available data for reading */
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lprintf("asc.buffer_allocate: ok\n");
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return SUCCESS;
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}
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/*** dma_restart
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*** invoked locally to start dma. Must run in a critical section
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***/
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static void
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dma_restart(struct asc_unit *scu)
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{
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unsigned char al=scu->cmd_byte;
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isa_dmastart(B_READ, scu->sbuf.base+scu->sbuf.wptr,
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scu->linesize, scu->dma_num);
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/*** this is done in sub_20, after dmastart ? ***/
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#if 0
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outb( ASC_CMD, al |= 4 );
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outb( ASC_CMD, al |= 8 ); /* ??? seems useless */
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outb( ASC_CMD, al &= 0xfb );
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scu->cmd_byte = al;
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#else
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outb( ASC_CMD, ASC_OPERATE);
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#endif
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scu->flags |= DMA_ACTIVE;
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}
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/***
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*** the main functions
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***/
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/*** asc_reset
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*** resets the scanner and the config bytes...
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***/
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void
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asc_reset(struct asc_unit *scu)
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{
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scu->cfg_byte = 0 ; /* clear... */
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scu->cmd_byte = 0 ; /* clear... */
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outb(ASC_CFG,scu->cfg_byte); /* for safety, do this here */
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outb(ASC_CMD,scu->cmd_byte); /* probably not needed */
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tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascres", hz/10); /* sleep .1 sec */
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scu->blen = DEFAULT_BLEN;
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scu->btime = TIMEOUT;
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scu->height = 0 ; /* don't know better... */
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}
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/**************************************************************************
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***
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*** ascprobe
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*** read status port and check for proper configuration:
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*** - if address group matches (status byte has reasonable value)
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*** cannot check interrupt/dma, only clear the config byte.
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***/
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int
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ascprobe (struct isa_device *isdp)
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{
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int unit = isdp->id_unit;
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struct asc_unit *scu = unittab + unit;
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int stb;
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scu->base = isdp->id_iobase; /*** needed by the following macros ***/
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scu->flags = DEBUG;
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if ( isdp->id_iobase < 0 ) {
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lprintf("asc%d.probe: no iobase given\n", unit);
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return PROBE_FAIL;
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}
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if ((stb=inb(ASC_PROBE)) != ASC_PROBE_VALUE) {
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lprintf("asc%d.probe: failed, got 0x%02x instead of 0x%02x\n",
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unit, stb, ASC_PROBE_VALUE);
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return PROBE_FAIL;
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}
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switch(ffs(isdp->id_irq) - 1) {
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case 3:
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scu->int_byte = ASC_CNF_IRQ3;
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break;
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case 5:
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scu->int_byte = ASC_CNF_IRQ5;
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break;
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case 10:
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scu->int_byte = ASC_CNF_IRQ10;
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break;
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#if 0
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case -1:
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scu->int_byte = 0;
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lprintf("asc%d.probe: warning - going interruptless\n", unit);
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break;
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#endif
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default:
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lprintf("asc%d.probe: unsupported INT %d (only 3, 5, 10)\n",
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unit, isdp->id_irq);
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return PROBE_FAIL;
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}
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scu->dma_num = isdp->id_drq;
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switch(scu->dma_num) {
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case 1:
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scu->dma_byte = ASC_CNF_DMA1;
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break;
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case 3:
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scu->dma_byte = ASC_CNF_DMA3;
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break;
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default:
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lprintf("asc%d.probe: unsupported DMA %d (only 1 or 3)\n", scu->dma_num);
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return PROBE_FAIL;
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}
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asc_reset(scu);
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/* lprintf("asc%d.probe: ok\n", unit); */
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scu->flags &= ~DEBUG;
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scu->icnt = 0;
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return PROBE_SUCCESS;
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}
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/**************************************************************************
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***
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*** ascattach
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*** finish initialization of unit structure, get geometry value (?)
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***/
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int
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ascattach(struct isa_device *isdp)
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{
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int unit = isdp->id_unit;
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struct asc_unit *scu = unittab + unit;
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#ifdef DEVFS
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char buf[32];
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void *x;
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#endif
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scu->flags |= DEBUG;
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printf("asc%d: [GI1904/Trust Ami-Scan Grey, type S2]\n", unit);
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/* initialize buffer structure */
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scu->sbuf.base = NULL;
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scu->sbuf.size = INVALID;
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scu->sbuf.rptr = INVALID;
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scu->flags |= ATTACHED;
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/* lprintf("asc%d.attach: ok\n", unit); */
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scu->flags &= ~DEBUG;
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#ifdef FREEBSD_1_X
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scu->selp = (pid_t)0;
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#else
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scu->selp.si_flags=0;
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scu->selp.si_pid=(pid_t)0;
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kdc_asc[isdp->id_unit].kdc_state = DC_BUSY; /* XXX don't know better */
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asc_registerdev(isdp);
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#endif
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#ifdef DEVFS
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sprintf(buf,"asc%d",unit);
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/* path name devsw minor type uid gid perm*/
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x=dev_add("/misc", buf, ascopen, unit<<6, DV_CHR, 0, 0, 0666);
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sprintf(buf,"asc%dp",unit);
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x=dev_add("/misc", buf, ascopen, ((unit<<6) + FRMT_PBM),
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DV_CHR, 0, 0, 0666);
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sprintf(buf,"asc%dd",unit);
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x=dev_add("/misc", buf, ascopen, ((unit<<6) + DBUG_MASK),
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DV_CHR, 0, 0, 0666);
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sprintf(buf,"asc%dpd",unit);
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x=dev_add("/misc", buf, ascopen, ((unit<<6) + DBUG_MASK + FRMT_PBM),
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DV_CHR, 0, 0, 0666);
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#endif /*DEVFS*/
|
|
return 1; /* attach must not fail */
|
|
}
|
|
|
|
/**************************************************************************
|
|
***
|
|
*** ascintr
|
|
*** the interrupt routine, at the end of DMA...
|
|
***/
|
|
void
|
|
ascintr(int unit)
|
|
{
|
|
struct asc_unit *scu = unittab + unit;
|
|
int chan_bit = 0x01 << scu->dma_num;
|
|
|
|
scu->icnt++;
|
|
/* ignore stray interrupts... */
|
|
if ( scu->flags & (OPEN |READING) != (OPEN | READING) ) {
|
|
/* must be after closing... */
|
|
scu->flags &= ~(OPEN | READING | DMA_ACTIVE | SLEEPING | SEL_COLL);
|
|
return;
|
|
}
|
|
if ( (scu->flags & DMA_ACTIVE) && (inb(DMA1_READY) & chan_bit) != 0) {
|
|
outb( ASC_CMD, ASC_STANDBY);
|
|
scu->flags &= ~DMA_ACTIVE;
|
|
/* bounce buffers... */
|
|
isa_dmadone(B_READ, scu->sbuf.base+scu->sbuf.wptr,
|
|
scu->linesize, scu->dma_num);
|
|
scu->sbuf.wptr += scu->linesize;
|
|
if (scu->sbuf.wptr >= scu->sbuf.size) scu->sbuf.wptr=0;
|
|
scu->sbuf.count += scu->linesize;
|
|
if (scu->flags & SLEEPING) {
|
|
scu->flags &= ~SLEEPING;
|
|
wakeup((caddr_t)scu);
|
|
}
|
|
if (scu->sbuf.size - scu->sbuf.count >= scu->linesize) {
|
|
dma_restart(scu);
|
|
}
|
|
#ifdef FREEBSD_1_X
|
|
if (scu->selp) {
|
|
selwakeup(&scu->selp, scu->flags & SEL_COLL );
|
|
scu->selp=(pid_t)0;
|
|
scu->flags &= ~SEL_COLL;
|
|
}
|
|
#else
|
|
if (scu->selp.si_pid) {
|
|
selwakeup(&scu->selp);
|
|
scu->selp.si_pid=(pid_t)0;
|
|
scu->selp.si_flags = 0;
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/**************************************************************************
|
|
***
|
|
*** ascopen
|
|
*** set open flag, set modes according to minor number
|
|
*** FOR RELEASE:
|
|
*** don't switch scanner on, wait until first read or ioctls go before
|
|
***/
|
|
|
|
int
|
|
ascopen(dev_t dev, int flags, int fmt, struct proc *p)
|
|
{
|
|
int unit = UNIT(minor(dev)) & UNIT_MASK;
|
|
struct asc_unit *scu = unittab + unit;
|
|
|
|
lprintf("asc%d.open: minor %d icnt %d\n", unit, minor(dev), scu->icnt);
|
|
|
|
if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
|
|
lprintf("asc%d.open: unit was not attached successfully, flags 0x%04x\n",
|
|
unit, scu->flags);
|
|
return ENXIO;
|
|
}
|
|
|
|
if ( scu->flags & OPEN ) {
|
|
lprintf("asc%d.open: already open", unit);
|
|
return EBUSY;
|
|
}
|
|
scu->flags = ATTACHED | OPEN;
|
|
|
|
if ( minor(dev) & DBUG_MASK ) scu->flags |= DEBUG;
|
|
|
|
switch(minor(dev) & FRMT_MASK) {
|
|
case FRMT_PBM:
|
|
scu->flags |= PBM_MODE;
|
|
lprintf("asc%d.open: pbm mode\n", unit);
|
|
break;
|
|
case FRMT_RAW:
|
|
lprintf("asc%d.open: raw mode\n", unit);
|
|
scu->flags &= ~PBM_MODE;
|
|
break;
|
|
default:
|
|
lprintf("asc%d.open: gray maps are not yet supported", unit);
|
|
return ENXIO;
|
|
}
|
|
|
|
asc_reset(scu);
|
|
get_resolution(scu);
|
|
return SUCCESS;
|
|
}
|
|
|
|
int
|
|
asc_startread(struct asc_unit *scu)
|
|
{
|
|
/*** from here on, things can be delayed to the first read/ioctl ***/
|
|
/*** this was done in sub_12... ***/
|
|
scu->cfg_byte= scu->cmd_byte=0; /* init scanner */
|
|
outb(ASC_CMD, scu->cmd_byte);
|
|
/*** this was done in sub_16, set scan len... ***/
|
|
outb(ASC_BOH, 0 );
|
|
scu->cmd_byte = 0x90 ;
|
|
outb(ASC_CMD, scu->cmd_byte);
|
|
outb(ASC_LEN_L, scu->linesize & 0xff /* len_low */);
|
|
outb(ASC_LEN_H, (scu->linesize >>8) & 0xff /* len_high */);
|
|
/*** this was done in sub_21, config DMA ... ***/
|
|
scu->cfg_byte |= scu->dma_byte;
|
|
outb(ASC_CFG, scu->cfg_byte);
|
|
/*** sub_22: enable int on the scanner ***/
|
|
scu->cfg_byte |= scu->int_byte;
|
|
outb(ASC_CFG, scu->cfg_byte);
|
|
/*** sub_28: light on etc...***/
|
|
scu->cmd_byte = ASC_STANDBY;
|
|
outb(ASC_CMD, scu->cmd_byte);
|
|
tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascstrd", hz/10); /* sleep .1 sec */
|
|
return SUCCESS;
|
|
}
|
|
|
|
/**************************************************************************
|
|
***
|
|
*** ascclose
|
|
*** turn off scanner, release the buffer
|
|
*** should probably terminate dma ops, release int and dma. lr 12mar95
|
|
***/
|
|
|
|
int
|
|
ascclose(dev_t dev, int flags, int fmt, struct proc *p)
|
|
{
|
|
int unit = UNIT(minor(dev));
|
|
struct asc_unit *scu = unittab + unit;
|
|
|
|
lprintf("asc%d.close: minor %d\n",
|
|
unit, minor(dev));
|
|
|
|
if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
|
|
lprintf("asc%d.close: unit was not attached successfully 0x%04x\n",
|
|
unit, scu->flags);
|
|
return ENXIO;
|
|
}
|
|
/* all this is in sub_29... */
|
|
/* cli(); */
|
|
outb(ASC_CFG, 0 ); /* don't save in CFG byte!!! */
|
|
scu->cmd_byte &= ~ASC_LIGHT_ON;
|
|
outb(ASC_CMD, scu->cmd_byte);/* light off */
|
|
tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascclo", hz/2); /* sleep 1/2 sec */
|
|
scu->cfg_byte &= ~ scu->dma_byte ; /* disable scanner dma */
|
|
scu->cfg_byte &= ~ scu->int_byte ; /* disable scanner int */
|
|
outb(ASC_CFG, scu->cfg_byte);
|
|
/* --- disable dma controller ? --- */
|
|
/* --- disable interrupts on the controller (sub_24) --- */
|
|
|
|
if ( scu->sbuf.base != NULL ) free( scu->sbuf.base, M_DEVBUF );
|
|
|
|
scu->sbuf.base = NULL;
|
|
scu->sbuf.size = INVALID;
|
|
scu->sbuf.rptr = INVALID;
|
|
|
|
scu->flags &= ~(DEBUG | OPEN | READING);
|
|
|
|
return SUCCESS;
|
|
}
|
|
|
|
static void
|
|
pbm_init(struct asc_unit *scu)
|
|
{
|
|
int width = geomtab[scu->geometry].dpl;
|
|
int l= sprintf(scu->sbuf.base,"P4 %d %d\n", width, scu->height);
|
|
char *p;
|
|
|
|
scu->bcount = scu->height * width / 8 + l;
|
|
|
|
/* move header to end of sbuf */
|
|
scu->sbuf.rptr=scu->sbuf.size-l;
|
|
bcopy(scu->sbuf.base, scu->sbuf.base+scu->sbuf.rptr,l);
|
|
scu->sbuf.count = l;
|
|
for(p = scu->sbuf.base + scu->sbuf.rptr; l; p++, l--)
|
|
*p = ~*p;
|
|
}
|
|
/**************************************************************************
|
|
***
|
|
*** ascread
|
|
***/
|
|
|
|
int
|
|
ascread(dev_t dev, struct uio *uio, int ioflag)
|
|
{
|
|
int unit = UNIT(minor(dev));
|
|
struct asc_unit *scu = unittab + unit;
|
|
size_t nbytes;
|
|
int sps, res;
|
|
unsigned char *p;
|
|
|
|
lprintf("asc%d.read: minor %d icnt %d\n", unit, minor(dev), scu->icnt);
|
|
|
|
if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
|
|
lprintf("asc%d.read: unit was not attached successfully 0x%04x\n",
|
|
unit, scu->flags);
|
|
return ENXIO;
|
|
}
|
|
|
|
if ( !(scu->flags & READING) ) { /*** first read... ***/
|
|
/* allocate a buffer for reading data and init things */
|
|
if ( (res = buffer_allocate(scu)) == SUCCESS ) scu->flags |= READING;
|
|
else return res;
|
|
asc_startread(scu);
|
|
if ( scu->flags & PBM_MODE ) { /* initialize for pbm mode */
|
|
pbm_init(scu);
|
|
}
|
|
}
|
|
|
|
lprintf("asc%d.read(before): "
|
|
"sz 0x%x, rptr 0x%x, wptr 0x%x, cnt 0x%x bcnt 0x%x flags 0x%x icnt %d\n",
|
|
unit, scu->sbuf.size, scu->sbuf.rptr,
|
|
scu->sbuf.wptr, scu->sbuf.count, scu->bcount,scu->flags,
|
|
scu->icnt);
|
|
|
|
sps=spltty();
|
|
if ( scu->sbuf.count == 0 ) { /* no data avail., must wait */
|
|
if (!(scu->flags & DMA_ACTIVE)) dma_restart(scu);
|
|
scu->flags |= SLEEPING;
|
|
res = tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascread", 0);
|
|
scu->flags &= ~SLEEPING;
|
|
if ( res == 0 ) res = SUCCESS;
|
|
}
|
|
splx(sps); /* lower priority... */
|
|
if (scu->flags & DEBUG)
|
|
tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascdly",hz);
|
|
lprintf("asc%d.read(after): "
|
|
"sz 0x%x, rptr 0x%x, wptr 0x%x, cnt 0x%x bcnt 0x%x flags 0x%x icnt %d\n",
|
|
unit, scu->sbuf.size, scu->sbuf.rptr,
|
|
scu->sbuf.wptr, scu->sbuf.count, scu->bcount,scu->flags,scu->icnt);
|
|
|
|
/* first, not more than available... */
|
|
nbytes = min( uio->uio_resid, scu->sbuf.count );
|
|
/* second, contiguous data... */
|
|
nbytes = min( nbytes, (scu->sbuf.size - scu->sbuf.rptr) );
|
|
/* third, one line (will remove this later, XXX) */
|
|
nbytes = min( nbytes, scu->linesize );
|
|
if ( (scu->flags & PBM_MODE) )
|
|
nbytes = min( nbytes, scu->bcount );
|
|
lprintf("asc%d.read: transferring 0x%x bytes\n", unit, nbytes);
|
|
|
|
lprintf("asc%d.read: invert buffer\n",unit);
|
|
for(p = scu->sbuf.base + scu->sbuf.rptr, res=nbytes; res; p++, res--)
|
|
*p = ~*p;
|
|
res = uiomove(scu->sbuf.base + scu->sbuf.rptr, nbytes, uio);
|
|
if ( res != SUCCESS ) {
|
|
lprintf("asc%d.read: uiomove failed %d", unit, res);
|
|
return res;
|
|
}
|
|
|
|
sps=spltty();
|
|
scu->sbuf.rptr += nbytes;
|
|
if (scu->sbuf.rptr >= scu->sbuf.size) scu->sbuf.rptr=0;
|
|
scu->sbuf.count -= nbytes;
|
|
/* having moved some data, can read mode */
|
|
if (!(scu->flags & DMA_ACTIVE)) dma_restart(scu);
|
|
splx(sps); /* lower priority... */
|
|
if ( scu->flags & PBM_MODE ) scu->bcount -= nbytes;
|
|
|
|
lprintf("asc%d.read: size 0x%x, pointer 0x%x, bcount 0x%x, ok\n",
|
|
unit, scu->sbuf.size, scu->sbuf.rptr, scu->bcount);
|
|
|
|
return SUCCESS;
|
|
}
|
|
|
|
/**************************************************************************
|
|
***
|
|
*** ascioctl
|
|
***/
|
|
|
|
int
|
|
ascioctl(dev_t dev, int cmd, caddr_t data, int flags, struct proc *p)
|
|
{
|
|
int unit = UNIT(minor(dev));
|
|
struct asc_unit *scu = unittab + unit;
|
|
|
|
lprintf("asc%d.ioctl: minor %d\n",
|
|
unit, minor(dev));
|
|
|
|
if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
|
|
lprintf("asc%d.ioctl: unit was not attached successfully 0x04x\n",
|
|
unit, scu->flags);
|
|
return ENXIO;
|
|
}
|
|
switch(cmd) {
|
|
case ASC_GRES:
|
|
asc_reset(scu);
|
|
get_resolution(scu);
|
|
*(int *)data=geomtab[scu->geometry].dpi;
|
|
lprintf("asc%d.ioctl:ASC_GRES %ddpi\n", unit, *(int *)data);
|
|
return SUCCESS;
|
|
case ASC_GWIDTH:
|
|
*(int *)data=geomtab[scu->geometry].dpl;
|
|
lprintf("asc%d.ioctl:ASC_GWIDTH %d\n", unit, *(int *)data);
|
|
return SUCCESS;
|
|
case ASC_GHEIGHT:
|
|
*(int *)data=scu->height;
|
|
lprintf("asc%d.ioctl:ASC_GHEIGHT %d\n", unit, *(int *)data);
|
|
return SUCCESS;
|
|
case ASC_SHEIGHT:
|
|
lprintf("asc%d.ioctl:ASC_SHEIGHT %d\n", unit, *(int *)data);
|
|
if ( scu->flags & READING ) {
|
|
lprintf("asc%d:ioctl on already reading unit\n", unit);
|
|
return EBUSY;
|
|
}
|
|
scu->height=*(int *)data;
|
|
return SUCCESS;
|
|
#if 0
|
|
case ASC_GBLEN:
|
|
*(int *)data=scu->blen;
|
|
lprintf("asc%d.ioctl:ASC_GBLEN %d\n", unit, *(int *)data);
|
|
return SUCCESS;
|
|
case ASC_SBLEN:
|
|
lprintf("asc%d.ioctl:ASC_SBLEN %d\n", unit, *(int *)data);
|
|
if (*(int *)data * geomtab[scu->geometry].dpl / 8 > MAX_BUFSIZE)
|
|
{
|
|
lprintf("asc%d:ioctl buffer size too high\n", unit);
|
|
return ENOMEM;
|
|
}
|
|
scu->blen=*(int *)data;
|
|
return SUCCESS;
|
|
case ASC_GBTIME:
|
|
*(int *)data = scu->btime / hz;
|
|
lprintf("asc%d.ioctl:ASC_GBTIME %d\n", unit, *(int *)data);
|
|
return SUCCESS;
|
|
case ASC_SBTIME:
|
|
scu->btime = *(int *)data * hz;
|
|
lprintf("asc%d.ioctl:ASC_SBTIME %d\n", unit, *(int *)data);
|
|
return SUCCESS;
|
|
#endif
|
|
default: return ENOTTY;
|
|
}
|
|
return SUCCESS;
|
|
}
|
|
|
|
int
|
|
ascselect(dev_t dev, int rw, struct proc *p)
|
|
{
|
|
int unit = UNIT(minor(dev));
|
|
struct asc_unit *scu = unittab + unit;
|
|
int sps=spltty();
|
|
struct proc *p1;
|
|
|
|
if (scu->sbuf.count >0) {
|
|
splx(sps);
|
|
return 1;
|
|
}
|
|
if (!(scu->flags & DMA_ACTIVE)) dma_restart(scu);
|
|
#ifdef FREEBSD_1_X
|
|
if (scu->selp== (pid_t)0) {
|
|
scu->selp= p->p_pid;
|
|
} else {
|
|
scu->flags |= SEL_COLL;
|
|
}
|
|
#else
|
|
|
|
if (scu->selp.si_pid && (p1=pfind(scu->selp.si_pid))
|
|
&& p1->p_wchan == (caddr_t)&selwait)
|
|
scu->selp.si_flags = SI_COLL;
|
|
else
|
|
scu->selp.si_pid = p->p_pid;
|
|
#endif
|
|
splx(sps);
|
|
return 0;
|
|
}
|
|
|
|
|
|
#ifdef JREMOD
|
|
struct cdevsw asc_cdevsw =
|
|
{ ascopen, ascclose, ascread, nowrite, /*71*/
|
|
ascioctl, nostop, nullreset, nodevtotty, /* asc */
|
|
ascselect, nommap, NULL };
|
|
|
|
static asc_devsw_installed = 0;
|
|
|
|
static void asc_drvinit(void *unused)
|
|
{
|
|
dev_t dev;
|
|
dev_t dev_chr;
|
|
|
|
if( ! asc_devsw_installed ) {
|
|
dev = makedev(CDEV_MAJOR,0);
|
|
cdevsw_add(&dev,&asc_cdevsw,NULL);
|
|
dev_chr = dev;
|
|
#if defined(BDEV_MAJOR)
|
|
dev = makedev(BDEV_MAJOR,0);
|
|
bdevsw_add(&dev,&asc_bdevsw,NULL);
|
|
#endif /*BDEV_MAJOR*/
|
|
asc_devsw_installed = 1;
|
|
#ifdef DEVFS
|
|
{
|
|
int x;
|
|
/* default for a simple device with no probe routine (usually delete this) */
|
|
x=devfs_add_devsw(
|
|
/* path name devsw minor type uid gid perm*/
|
|
"/", "asc", major(dev_chr), 0, DV_CHR, 0, 0, 0600);
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
SYSINIT(ascdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,asc_drvinit,NULL)
|
|
|
|
#endif /* JREMOD */
|
|
|
|
#endif /* NASC > 0 */
|