/* asc.c - device driver for hand scanners * * Current version supports: * * - Trust AmiScan BW (GI1904 chipset) * * Copyright (c) 1995 Gunther Schadow. All rights reserved. * Copyright (c) 1995 Luigi Rizzo. 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 Gunther Schadow * and Luigi Rizzo. * 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. */ /* * $Id: asc.c,v 1.4 1995/09/08 18:30:33 julian Exp $ */ #include "asc.h" #if NASC > 0 #ifdef FREEBSD_1_X #include "param.h" #include "systm.h" #include "proc.h" #include "user.h" #include "buf.h" #include "malloc.h" #include "kernel.h" #include "ioctl.h" #include "tty.h" #include "uio.h" #include "syslog.h" #include "i386/isa/isa.h" #include "i386/isa/isa_device.h" #include "i386/isa/ascreg.h" #include "machine/asc_ioctl.h" #else #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef DEVFS #include extern d_open_t ascopen; #endif #endif /* FREEBSD_1_X */ /*** *** CONSTANTS & DEFINES *** ***/ #define PROBE_FAIL 0 #define PROBE_SUCCESS 5 /* number of io ports... */ #define SUCCESS 0 #define FAIL -1 #define INVALID FAIL #define DMA1_READY 0x08 #define ASCDEBUG #ifdef ASCDEBUG # define lprintf if(scu->flags & DEBUG) printf #else # define lprintf (void) #endif #define TIMEOUT (hz*15) /* timeout while reading a buffer - default value */ #define ASCPRI PRIBIO /* priority while reading a buffer */ /*** *** LAYOUT OF THE MINOR NUMBER ***/ #define UNIT_MASK 0xc0 /* unit asc0 .. asc3 */ #define UNIT(x) (x >> 6) #define DBUG_MASK 0x20 #define FRMT_MASK 0x18 /* output format */ #define FRMT_RAW 0x00 /* output bits as read from scanner */ #define FRMT_GRAY 0x10 /* output graymap (not implemented yet) */ #define FRMT_PBM 0x08 /* output pbm format */ #define FRMT_PGM 0x18 /*** *** THE GEMOMETRY TABLE ***/ static const struct asc_geom { int dpi; /* dots per inch */ int dpl; /* dots per line */ int bpl; /* bytes per line */ int g_res; /* get resolution value (ASC_STAT) */ } geomtab[] = { { 800, 3312, 414, ASC_RES_800}, { 700, 2896, 362, ASC_RES_700}, { 600, 2480, 310, ASC_RES_600}, { 500, 1656, 258, ASC_RES_500}, { 400, 1656, 207, ASC_RES_400}, { 300, 1240, 155, ASC_RES_300}, { 200, 832, 104, ASC_RES_200}, { 100, 416, 52, ASC_RES_100}, { INVALID, 416, 52, INVALID } /* terminator */ }; /*** *** THE TABLE OF UNITS ***/ struct _sbuf { size_t size; size_t rptr; size_t wptr; /* only changed in ascintr */ size_t count; char *base; }; struct asc_unit { int base; /* base address */ int dma_num; /* dma number */ char dma_byte; /* mask of byte for setting DMA value */ char int_byte; /* mask of byte for setting int value */ char cfg_byte; /* mirror of byte written to config reg (ASC_CFG). */ char cmd_byte; /* mirror of byte written to cmd port (ASC_CMD)*/ int flags; #define ATTACHED 0x01 #define OPEN 0x02 #define READING 0x04 #define DMA_ACTIVE 0x08 #define SLEEPING 0x10 #define SEL_COLL 0x20 #define PBM_MODE 0x40 #define DEBUG 0x80 int geometry; /* resolution as geomtab index */ int linesize; /* length of one scan line (from geom.table) */ int blen; /* length of buffer in lines */ int btime; /* timeout of buffer in seconds/hz */ struct _sbuf sbuf; long icnt; /* interrupt count XXX for debugging */ #ifdef FREEBSD_1_X pid_t selp; /* select pointer... */ #else struct selinfo selp; #endif int height; /* height, for pnm modes */ size_t bcount; /* bytes to read, for pnm modes */ } unittab[NASC]; /*** I could not find a reasonable buffer size limit other than by *** experiments. MAXPHYS is obviously too much, while DEV_BSIZE and *** PAGE_SIZE are really too small. There must be something wrong *** with isa_dmastart/isa_dmarangecheck HELP!!! ***/ #define MAX_BUFSIZE 0x3000 #define DEFAULT_BLEN 20 /*** *** THE PER-DRIVER RECORD FOR ISA.C ***/ int ascprobe (struct isa_device *isdp); int ascattach(struct isa_device *isdp); struct isa_driver ascdriver = { ascprobe, ascattach, "asc" }; #ifndef FREEBSD_1_X struct asc_softc { struct isa_device *dev; } asc_softc[NASC]; static struct kern_devconf kdc_asc[NASC] = { { 0, 0, 0, /* filled in by dev_attach */ "asc", 0, { MDDT_ISA, 0, "tty" }, isa_generic_externalize, 0, 0, ISA_EXTERNALLEN, &kdc_isa0, /* parent */ 0, /* parentdata */ DC_UNCONFIGURED, /* state */ "GI1904 Hand scanner", DC_CLS_MISC } }; static inline void asc_registerdev(struct isa_device *id) { if(id->id_unit) kdc_asc[id->id_unit] = kdc_asc[0]; kdc_asc[id->id_unit].kdc_unit = id->id_unit; kdc_asc[id->id_unit].kdc_isa = id; dev_attach(&kdc_asc[id->id_unit]); } #endif /* ! FREEBSD_1_X */ /*** *** LOCALLY USED SUBROUTINES *** ***/ /*** *** get_resolution *** read resolution from the scanner ***/ static void get_resolution(struct asc_unit *scu) { int res, i, delay; res=0; scu->cmd_byte = ASC_STANDBY; outb(ASC_CMD, scu->cmd_byte); tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascres", hz/10); for(delay= 100; (res=inb(ASC_STAT)) & ASC_RDY_FLAG; delay--) { i = tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascres0", 1); if ( ( i == 0 ) || ( i == EWOULDBLOCK ) ) i = SUCCESS; else break; } if (delay==0) { lprintf("asc.get_resolution: timeout completing command\n"); return /* -1 */; } /* ... actual read resolution... */ res &= ASC_RES_MASK; for (i=0; geomtab[i].dpi != INVALID; i++) { if (geomtab[i].g_res == res) break; } if (geomtab[i].dpi==INVALID) { scu->geometry= i; /* INVALID; */ lprintf("asc.get_resolution: wrong resolution\n"); } else { lprintf("asc.get_resolution: %d dpi\n",geomtab[i].dpi); scu->geometry = i; } scu->linesize = geomtab[scu->geometry].bpl; scu->height = geomtab[scu->geometry].dpl; /* default... */ } /*** *** buffer_allocate *** allocate/reallocate a buffer ***/ static int buffer_allocate(struct asc_unit *scu) { size_t size, size1; size = scu->blen * scu->linesize; lprintf("asc.buffer_allocate: need 0x%x bytes\n", size); if ( size > MAX_BUFSIZE ) { size1=size; size= ( (MAX_BUFSIZE+scu->linesize-1) / scu->linesize)*scu->linesize; lprintf("asc.buffer_allocate: 0x%x bytes are too much, try 0x%x\n", size1, size); /* return ENOMEM; */ } if ( scu->sbuf.base != NULL ) if ( scu->sbuf.size == size ) { lprintf("asc.buffer_allocate: keep old buffer\n"); return SUCCESS; } else { lprintf("asc.buffer_allocate: release old buffer\n"); free( scu->sbuf.base, M_DEVBUF ); } scu->sbuf.base = (char *)malloc(size, M_DEVBUF, M_WAITOK); if ( scu->sbuf.base == NULL ) { lprintf("asc.buffer_allocate: " "buffer allocatation failed for size = 0x%x\n", scu->sbuf.size); return ENOMEM; } scu->sbuf.size = size; scu->sbuf.rptr = 0; scu->sbuf.wptr = 0; scu->sbuf.count = 0; /* available data for reading */ lprintf("asc.buffer_allocate: ok\n"); return SUCCESS; } /*** dma_restart *** invoked locally to start dma. Must run in a critical section ***/ static void dma_restart(struct asc_unit *scu) { unsigned char al=scu->cmd_byte; isa_dmastart(B_READ, scu->sbuf.base+scu->sbuf.wptr, scu->linesize, scu->dma_num); /*** this is done in sub_20, after dmastart ? ***/ #if 0 outb( ASC_CMD, al |= 4 ); outb( ASC_CMD, al |= 8 ); /* ??? seems useless */ outb( ASC_CMD, al &= 0xfb ); scu->cmd_byte = al; #else outb( ASC_CMD, ASC_OPERATE); #endif scu->flags |= DMA_ACTIVE; } /*** *** the main functions ***/ /*** asc_reset *** resets the scanner and the config bytes... ***/ void asc_reset(struct asc_unit *scu) { scu->cfg_byte = 0 ; /* clear... */ scu->cmd_byte = 0 ; /* clear... */ outb(ASC_CFG,scu->cfg_byte); /* for safety, do this here */ outb(ASC_CMD,scu->cmd_byte); /* probably not needed */ tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascres", hz/10); /* sleep .1 sec */ scu->blen = DEFAULT_BLEN; scu->btime = TIMEOUT; scu->height = 0 ; /* don't know better... */ } /************************************************************************** *** *** ascprobe *** read status port and check for proper configuration: *** - if address group matches (status byte has reasonable value) *** cannot check interrupt/dma, only clear the config byte. ***/ int ascprobe (struct isa_device *isdp) { int unit = isdp->id_unit; struct asc_unit *scu = unittab + unit; int stb; scu->base = isdp->id_iobase; /*** needed by the following macros ***/ scu->flags = DEBUG; if ( isdp->id_iobase < 0 ) { lprintf("asc%d.probe: no iobase given\n", unit); return PROBE_FAIL; } if ((stb=inb(ASC_PROBE)) != ASC_PROBE_VALUE) { lprintf("asc%d.probe: failed, got 0x%02x instead of 0x%02x\n", unit, stb, ASC_PROBE_VALUE); return PROBE_FAIL; } switch(ffs(isdp->id_irq) - 1) { case 3: scu->int_byte = ASC_CNF_IRQ3; break; case 5: scu->int_byte = ASC_CNF_IRQ5; break; case 10: scu->int_byte = ASC_CNF_IRQ10; break; #if 0 case -1: scu->int_byte = 0; lprintf("asc%d.probe: warning - going interruptless\n", unit); break; #endif default: lprintf("asc%d.probe: unsupported INT %d (only 3, 5, 10)\n", unit, isdp->id_irq); return PROBE_FAIL; } scu->dma_num = isdp->id_drq; switch(scu->dma_num) { case 1: scu->dma_byte = ASC_CNF_DMA1; break; case 3: scu->dma_byte = ASC_CNF_DMA3; break; default: lprintf("asc%d.probe: unsupported DMA %d (only 1 or 3)\n", scu->dma_num); return PROBE_FAIL; } asc_reset(scu); /* lprintf("asc%d.probe: ok\n", unit); */ scu->flags &= ~DEBUG; scu->icnt = 0; return PROBE_SUCCESS; } /************************************************************************** *** *** ascattach *** finish initialization of unit structure, get geometry value (?) ***/ int ascattach(struct isa_device *isdp) { int unit = isdp->id_unit; struct asc_unit *scu = unittab + unit; #ifdef DEVFS char buf[32]; void *x; #endif scu->flags |= DEBUG; printf("asc%d: [GI1904/Trust Ami-Scan Grey, type S2]\n", unit); /* initialize buffer structure */ scu->sbuf.base = NULL; scu->sbuf.size = INVALID; scu->sbuf.rptr = INVALID; scu->flags |= ATTACHED; /* lprintf("asc%d.attach: ok\n", unit); */ scu->flags &= ~DEBUG; #ifdef FREEBSD_1_X scu->selp = (pid_t)0; #else scu->selp.si_flags=0; scu->selp.si_pid=(pid_t)0; kdc_asc[isdp->id_unit].kdc_state = DC_BUSY; /* XXX don't know better */ asc_registerdev(isdp); #endif #ifdef DEVFS sprintf(buf,"asc%d",unit); /* path name devsw minor type uid gid perm*/ x=dev_add("/misc", buf, ascopen, unit<<6, DV_CHR, 0, 0, 0666); sprintf(buf,"asc%dp",unit); x=dev_add("/misc", buf, ascopen, ((unit<<6) + FRMT_PBM), DV_CHR, 0, 0, 0666); sprintf(buf,"asc%dd",unit); x=dev_add("/misc", buf, ascopen, ((unit<<6) + DBUG_MASK), DV_CHR, 0, 0, 0666); sprintf(buf,"asc%dpd",unit); x=dev_add("/misc", buf, ascopen, ((unit<<6) + DBUG_MASK + FRMT_PBM), DV_CHR, 0, 0, 0666); #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; } #endif /* NASC > 0 */