Return to grf.c CVS log

Up to [Net/2] / Net2 / arch / amiga / dev

Annotation of Net2/arch/amiga/dev/grf.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1988 University of Utah.
        !             3:  * Copyright (c) 1990 The Regents of the University of California.
        !             4:  * All rights reserved.
        !             5:  *
        !             6:  * This code is derived from software contributed to Berkeley by
        !             7:  * the Systems Programming Group of the University of Utah Computer
        !             8:  * Science Department.
        !             9:  *
        !            10:  * Redistribution and use in source and binary forms, with or without
        !            11:  * modification, are permitted provided that the following conditions
        !            12:  * are met:
        !            13:  * 1. Redistributions of source code must retain the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer.
        !            15:  * 2. Redistributions in binary form must reproduce the above copyright
        !            16:  *    notice, this list of conditions and the following disclaimer in the
        !            17:  *    documentation and/or other materials provided with the distribution.
        !            18:  * 3. All advertising materials mentioning features or use of this software
        !            19:  *    must display the following acknowledgement:
        !            20:  *     This product includes software developed by the University of
        !            21:  *     California, Berkeley and its contributors.
        !            22:  * 4. Neither the name of the University nor the names of its contributors
        !            23:  *    may be used to endorse or promote products derived from this software
        !            24:  *    without specific prior written permission.
        !            25:  *
        !            26:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            27:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            28:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            29:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            30:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            31:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            32:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            33:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            34:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            35:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            36:  * SUCH DAMAGE.
        !            37:  *
        !            38:  * from: Utah $Hdr: grf.c 1.31 91/01/21$
        !            39:  *
        !            40:  *     @(#)grf.c       7.8 (Berkeley) 5/7/91
        !            41:  */
        !            42: 
        !            43: /*
        !            44:  * Graphics display driver for the AMIGA
        !            45:  * This is the hardware-independent portion of the driver.
        !            46:  * Hardware access is through the grfdev routines below.
        !            47:  */
        !            48: 
        !            49: #include "grf.h"
        !            50: #if NGRF > 0
        !            51: 
        !            52: #include "param.h"
        !            53: #include "proc.h"
        !            54: #include "ioctl.h"
        !            55: #include "file.h"
        !            56: #include "malloc.h"
        !            57: 
        !            58: #include "device.h"
        !            59: #include "grfioctl.h"
        !            60: #include "grfvar.h"
        !            61: 
        !            62: #include "machine/cpu.h"
        !            63: 
        !            64: #include "vm/vm.h"
        !            65: #include "vm/vm_kern.h"
        !            66: #include "vm/vm_page.h"
        !            67: #include "vm/vm_pager.h"
        !            68: 
        !            69: #include "specdev.h"
        !            70: #include "vnode.h"
        !            71: #include "mman.h"
        !            72: 
        !            73: #include "ite.h"
        !            74: #if NITE == 0
        !            75: #define        iteon(u,f)
        !            76: #define        iteoff(u,f)
        !            77: #endif
        !            78: 
        !            79: int    grfprobe();
        !            80: int    cc_init(), cc_mode();
        !            81: int    tg_init(), tg_mode();
        !            82: 
        !            83: struct grfdev grfdev[] = {
        !            84:        MANUF_BUILTIN,          PROD_BUILTIN_DISPLAY,
        !            85:                cc_init,  cc_mode,  "custom chips",
        !            86:        MANUF_UNILOWELL,        PROD_UNILOWELL_A2410,
        !            87:                tg_init,  tg_mode,    "A2410 TIGA board",
        !            88: };
        !            89: int    ngrfdev = sizeof(grfdev) / sizeof(grfdev[0]);
        !            90: 
        !            91: struct driver grfdriver = { grfprobe, "grf" };
        !            92: struct grf_softc grf_softc[NGRF];
        !            93: 
        !            94: #ifdef DEBUG
        !            95: int grfdebug = 0;
        !            96: #define GDB_DEVNO      0x01
        !            97: #define GDB_MMAP       0x02
        !            98: #define GDB_IOMAP      0x04
        !            99: #define GDB_LOCK       0x08
        !           100: #endif
        !           101: 
        !           102: /*
        !           103:  * XXX: called from ite console init routine.
        !           104:  * Does just what configure will do later but without printing anything.
        !           105:  */
        !           106: grfconfig()
        !           107: {
        !           108:        register caddr_t addr;
        !           109:        register struct amiga_hw *hw;
        !           110:        register struct amiga_device *ad, *nad;
        !           111: 
        !           112:        for (hw = sc_table; hw->hw_type; hw++) {
        !           113:                if (!HW_ISDEV(hw, D_BITMAP))
        !           114:                        continue;
        !           115:                /*
        !           116:                 * Found one, now match up with a logical unit number
        !           117:                 */
        !           118:                nad = NULL;             
        !           119:                addr = hw->hw_kva;
        !           120:                for (ad = amiga_dinit; ad->amiga_driver; ad++) {
        !           121:                        if (ad->amiga_driver != &grfdriver || ad->amiga_alive)
        !           122:                                continue;
        !           123:                        /*
        !           124:                         * Wildcarded.  If first, remember as possible match.
        !           125:                         */
        !           126:                        if (ad->amiga_addr == NULL) {
        !           127:                                if (nad == NULL)
        !           128:                                        nad = ad;
        !           129:                                continue;
        !           130:                        }
        !           131:                        /*
        !           132:                         * Not wildcarded.
        !           133:                         * If exact match done searching, else keep looking.
        !           134:                         */
        !           135:                        if (((hw->hw_manufacturer << 16) | hw->hw_product) 
        !           136:                            == ad->amiga_addr) {
        !           137:                                nad = ad;
        !           138:                                break;
        !           139:                        }
        !           140:                }
        !           141:                /*
        !           142:                 * Found a match, initialize
        !           143:                 */
        !           144:                if (nad && grfinit (nad))
        !           145:                        nad->amiga_addr = addr;
        !           146:        }
        !           147: }
        !           148: 
        !           149: /*
        !           150:  * Normal init routine called by configure() code
        !           151:  */
        !           152: grfprobe(ad)
        !           153:        struct amiga_device *ad;
        !           154: {
        !           155:        struct grf_softc *gp = &grf_softc[ad->amiga_unit];
        !           156: 
        !           157:        if ((gp->g_flags & GF_ALIVE) == 0 &&
        !           158:            !grfinit (ad))
        !           159:                return(0);
        !           160:        printf("grf%d: %d x %d ", ad->amiga_unit,
        !           161:               gp->g_display.gd_dwidth, gp->g_display.gd_dheight);
        !           162:        if (gp->g_display.gd_colors == 2)
        !           163:                printf("monochrome");
        !           164:        else
        !           165:                printf("%d color", gp->g_display.gd_colors);
        !           166:        printf(" %s display\n", grfdev[gp->g_type].gd_desc);
        !           167:        return(1);
        !           168: }
        !           169: 
        !           170: grfinit(ad)
        !           171:        struct amiga_device *ad;
        !           172: {
        !           173:        struct grf_softc *gp = &grf_softc[ad->amiga_unit];
        !           174:        register struct grfdev *gd;
        !           175: 
        !           176:        for (gd = grfdev; gd < &grfdev[ngrfdev]; gd++)
        !           177:          if (((gd->gd_manuf << 16) | gd->gd_prod) == ad->amiga_addr)
        !           178:            break;
        !           179: 
        !           180:        if (gd < &grfdev[ngrfdev] && (*gd->gd_init)(gp, ad)) {
        !           181:                gp->g_type = gd - grfdev;
        !           182:                gp->g_flags = GF_ALIVE;
        !           183:                return(1);
        !           184:        }
        !           185:        return(0);
        !           186: }
        !           187: 
        !           188: /*ARGSUSED*/
        !           189: grfopen(dev, flags)
        !           190:        dev_t dev;
        !           191: {
        !           192:        int unit = GRFUNIT(dev);
        !           193:        register struct grf_softc *gp = &grf_softc[unit];
        !           194:        int error = 0;
        !           195: 
        !           196:        if (unit >= NGRF || (gp->g_flags & GF_ALIVE) == 0)
        !           197:                return(ENXIO);
        !           198:        if ((gp->g_flags & (GF_OPEN|GF_EXCLUDE)) == (GF_OPEN|GF_EXCLUDE))
        !           199:                return(EBUSY);
        !           200:        /*
        !           201:         * First open.
        !           202:         * XXX: always put in graphics mode.
        !           203:         */
        !           204:        error = 0;
        !           205:        if ((gp->g_flags & GF_OPEN) == 0) {
        !           206:                gp->g_flags |= GF_OPEN;
        !           207:                error = grfon(dev);
        !           208:        }
        !           209:        return(error);
        !           210: }
        !           211: 
        !           212: /*ARGSUSED*/
        !           213: grfclose(dev, flags)
        !           214:        dev_t dev;
        !           215: {
        !           216:        register struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
        !           217: 
        !           218:        (void) grfoff(dev);
        !           219:        (void) grfunlock(gp);
        !           220:        gp->g_flags &= GF_ALIVE;
        !           221:        return(0);
        !           222: }
        !           223: 
        !           224: /*ARGSUSED*/
        !           225: grfioctl(dev, cmd, data, flag, p)
        !           226:        dev_t dev;
        !           227:        caddr_t data;
        !           228:        struct proc *p;
        !           229: {
        !           230:        register struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
        !           231:        int error;
        !           232: 
        !           233:        error = 0;
        !           234:        switch (cmd) {
        !           235: 
        !           236:        case GRFIOCGINFO:
        !           237:                bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo));
        !           238:                break;
        !           239: 
        !           240:        case GRFIOCON:
        !           241:                error = grfon(dev);
        !           242:                break;
        !           243: 
        !           244:        case GRFIOCOFF:
        !           245:                error = grfoff(dev);
        !           246:                break;
        !           247: 
        !           248:        case GRFIOCMAP:
        !           249:                error = grfmmap(dev, (caddr_t *)data, p);
        !           250:                break;
        !           251: 
        !           252:        case GRFIOCUNMAP:
        !           253:                error = grfunmmap(dev, *(caddr_t *)data, p);
        !           254:                break;
        !           255:                
        !           256:        case GRFIOCSINFO:
        !           257:                error = grfsinfo (dev, (struct grfdyninfo *) data);
        !           258:                break;
        !           259:                
        !           260:        default:
        !           261:                error = EINVAL;
        !           262:                break;
        !           263: 
        !           264:        }
        !           265:        return(error);
        !           266: }
        !           267: 
        !           268: /*ARGSUSED*/
        !           269: grfselect(dev, rw)
        !           270:        dev_t dev;
        !           271: {
        !           272:        if (rw == FREAD)
        !           273:                return(0);
        !           274:        return(1);
        !           275: }
        !           276: 
        !           277: grflock(gp, block)
        !           278:        register struct grf_softc *gp;
        !           279:        int block;
        !           280: {
        !           281:        struct proc *p = curproc;               /* XXX */
        !           282:        int error;
        !           283:        extern char devioc[];
        !           284: 
        !           285: #ifdef DEBUG
        !           286:        if (grfdebug & GDB_LOCK)
        !           287:                printf("grflock(%d): dev %x flags %x lockpid %x\n",
        !           288:                       p->p_pid, gp-grf_softc, gp->g_flags,
        !           289:                       gp->g_lockp ? gp->g_lockp->p_pid : -1);
        !           290: #endif
        !           291:        if (gp->g_lockp) {
        !           292:                if (gp->g_lockp == p)
        !           293:                        return(EBUSY);
        !           294:                if (!block)
        !           295:                        return(EAGAIN);
        !           296:                do {
        !           297:                        gp->g_flags |= GF_WANTED;
        !           298:                        if (error = tsleep((caddr_t)&gp->g_flags,
        !           299:                                           (PZERO+1) | PCATCH, devioc, 0))
        !           300:                                return (error);
        !           301:                } while (gp->g_lockp);
        !           302:        }
        !           303:        gp->g_lockp = p;
        !           304:        return(0);
        !           305: }
        !           306: 
        !           307: grfunlock(gp)
        !           308:        register struct grf_softc *gp;
        !           309: {
        !           310: #ifdef DEBUG
        !           311:        if (grfdebug & GDB_LOCK)
        !           312:                printf("grfunlock(%d): dev %x flags %x lockpid %d\n",
        !           313:                       curproc->p_pid, gp-grf_softc, gp->g_flags,
        !           314:                       gp->g_lockp ? gp->g_lockp->p_pid : -1);
        !           315: #endif
        !           316:        if (gp->g_lockp != curproc)
        !           317:                return(EBUSY);
        !           318:        if (gp->g_flags & GF_WANTED) {
        !           319:                wakeup((caddr_t)&gp->g_flags); 
        !           320:                gp->g_flags &= ~GF_WANTED;
        !           321:        }
        !           322:        gp->g_lockp = NULL;
        !           323:        return(0);
        !           324: }
        !           325: 
        !           326: /*ARGSUSED*/
        !           327: grfmap(dev, off, prot)
        !           328:        dev_t dev;
        !           329: {
        !           330:        return(grfaddr(&grf_softc[GRFUNIT(dev)], off));
        !           331: }
        !           332: 
        !           333: 
        !           334: grfon(dev)
        !           335:        dev_t dev;
        !           336: {
        !           337:        int unit = GRFUNIT(dev);
        !           338:        struct grf_softc *gp = &grf_softc[unit];
        !           339: 
        !           340:        /*
        !           341:         * XXX: iteoff call relies on devices being in same order
        !           342:         * as ITEs and the fact that iteoff only uses the minor part
        !           343:         * of the dev arg.
        !           344:         */
        !           345:        iteoff(unit, 3);
        !           346:        return((*grfdev[gp->g_type].gd_mode)
        !           347:                        (gp, (dev&GRFOVDEV) ? GM_GRFOVON : GM_GRFON));
        !           348: }
        !           349: 
        !           350: grfoff(dev)
        !           351:        dev_t dev;
        !           352: {
        !           353:        int unit = GRFUNIT(dev);
        !           354:        struct grf_softc *gp = &grf_softc[unit];
        !           355:        int error;
        !           356: 
        !           357:        (void) grfunmmap(dev, (caddr_t)0, curproc);
        !           358:        error = (*grfdev[gp->g_type].gd_mode)
        !           359:                        (gp, (dev&GRFOVDEV) ? GM_GRFOVOFF : GM_GRFOFF);
        !           360:        /* XXX: see comment for iteoff above */
        !           361:        iteon(unit, 2);
        !           362:        return(error);
        !           363: }
        !           364: 
        !           365: grfsinfo(dev, dyninfo)
        !           366:        dev_t dev;
        !           367:        struct grfdyninfo *dyninfo;
        !           368: {
        !           369:        int unit = GRFUNIT(dev);
        !           370:        struct grf_softc *gp = &grf_softc[unit];
        !           371:        int error;
        !           372: 
        !           373:        error = grfdev[gp->g_type].gd_mode (gp, GM_GRFCONFIG, dyninfo);
        !           374:        /* XXX: see comment for iteoff above */
        !           375:        itereinit (unit);
        !           376:        return(error);
        !           377: }
        !           378: 
        !           379: grfaddr(gp, off)
        !           380:        struct grf_softc *gp;
        !           381:        register int off;
        !           382: {
        !           383:        register struct grfinfo *gi = &gp->g_display;
        !           384: 
        !           385: #if 0
        !           386:        /* control registers */
        !           387:        if (off >= 0 && off < gi->gd_regsize)
        !           388:                return(((u_int)gi->gd_regaddr + off) >> PGSHIFT);
        !           389: 
        !           390:        /* frame buffer */
        !           391:        if (off >= gi->gd_regsize && off < gi->gd_regsize+gi->gd_fbsize) {
        !           392:                off -= gi->gd_regsize;
        !           393:                return(((u_int)gi->gd_fbaddr + off) >> PGSHIFT);
        !           394:        }
        !           395: #endif
        !           396:        /* bogus */
        !           397:        return(-1);
        !           398: }
        !           399: 
        !           400: grfmmap(dev, addrp, p)
        !           401:        dev_t dev;
        !           402:        caddr_t *addrp;
        !           403:        struct proc *p;
        !           404: {
        !           405:        struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
        !           406:        int len, error;
        !           407:        struct vnode vn;
        !           408:        struct specinfo si;
        !           409:        int flags;
        !           410: 
        !           411: #ifdef DEBUG
        !           412:        if (grfdebug & GDB_MMAP)
        !           413:                printf("grfmmap(%d): addr %x\n", p->p_pid, *addrp);
        !           414: #endif
        !           415:        len = gp->g_display.gd_regsize + gp->g_display.gd_fbsize;
        !           416:        flags = MAP_FILE|MAP_SHARED;
        !           417:        if (*addrp)
        !           418:                flags |= MAP_FIXED;
        !           419:        else
        !           420:                *addrp = (caddr_t)0x1000000;    /* XXX */
        !           421:        vn.v_type = VCHR;                       /* XXX */
        !           422:        vn.v_specinfo = &si;                    /* XXX */
        !           423:        vn.v_rdev = dev;                        /* XXX */
        !           424:        error = vm_mmap(&p->p_vmspace->vm_map, (vm_offset_t *)addrp,
        !           425:                        (vm_size_t)len, VM_PROT_ALL, flags, (caddr_t)&vn, 0);
        !           426:        return(error);
        !           427: }
        !           428: 
        !           429: grfunmmap(dev, addr, p)
        !           430:        dev_t dev;
        !           431:        caddr_t addr;
        !           432:        struct proc *p;
        !           433: {
        !           434:        struct grf_softc *gp = &grf_softc[GRFUNIT(dev)];
        !           435:        vm_size_t size;
        !           436:        int rv;
        !           437: 
        !           438: #ifdef DEBUG
        !           439:        if (grfdebug & GDB_MMAP)
        !           440:                printf("grfunmmap(%d): dev %x addr %x\n", p->p_pid, dev, addr);
        !           441: #endif
        !           442:        if (addr == 0)
        !           443:                return(EINVAL);         /* XXX: how do we deal with this? */
        !           444:        size = round_page(gp->g_display.gd_regsize + gp->g_display.gd_fbsize);
        !           445:        rv = vm_deallocate(p->p_vmspace->vm_map, (vm_offset_t)addr, size);
        !           446:        return(rv == KERN_SUCCESS ? 0 : EINVAL);
        !           447: }
        !           448: 
        !           449: 
        !           450: #endif /* NGRF > 0 */

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.