Annotation of sys/arch/sparc/dev/cgthree.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: cgthree.c,v 1.33 2007/02/18 18:40:35 miod Exp $ */
! 2: /* $NetBSD: cgthree.c,v 1.33 1997/05/24 20:16:11 pk Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 2002 Miodrag Vallat. All rights reserved.
! 6: * Copyright (c) 2001 Jason L. Wright (jason@thought.net)
! 7: * All rights reserved.
! 8: *
! 9: * Redistribution and use in source and binary forms, with or without
! 10: * modification, are permitted provided that the following conditions
! 11: * are met:
! 12: * 1. Redistributions of source code must retain the above copyright
! 13: * notice, this list of conditions and the following disclaimer.
! 14: * 2. Redistributions in binary form must reproduce the above copyright
! 15: * notice, this list of conditions and the following disclaimer in the
! 16: * documentation and/or other materials provided with the distribution.
! 17: *
! 18: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 19: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
! 20: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
! 21: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
! 22: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 23: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 24: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 25: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 26: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
! 27: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 28: * POSSIBILITY OF SUCH DAMAGE.
! 29: *
! 30: * Effort sponsored in part by the Defense Advanced Research Projects
! 31: * Agency (DARPA) and Air Force Research Laboratory, Air Force
! 32: * Materiel Command, USAF, under agreement number F30602-01-2-0537.
! 33: *
! 34: *
! 35: * Copyright (c) 1992, 1993
! 36: * The Regents of the University of California. All rights reserved.
! 37: *
! 38: * This software was developed by the Computer Systems Engineering group
! 39: * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
! 40: * contributed to Berkeley.
! 41: *
! 42: * All advertising materials mentioning features or use of this software
! 43: * must display the following acknowledgement:
! 44: * This product includes software developed by the University of
! 45: * California, Lawrence Berkeley Laboratory.
! 46: *
! 47: * Redistribution and use in source and binary forms, with or without
! 48: * modification, are permitted provided that the following conditions
! 49: * are met:
! 50: * 1. Redistributions of source code must retain the above copyright
! 51: * notice, this list of conditions and the following disclaimer.
! 52: * 2. Redistributions in binary form must reproduce the above copyright
! 53: * notice, this list of conditions and the following disclaimer in the
! 54: * documentation and/or other materials provided with the distribution.
! 55: * 3. Neither the name of the University nor the names of its contributors
! 56: * may be used to endorse or promote products derived from this software
! 57: * without specific prior written permission.
! 58: *
! 59: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 60: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 61: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 62: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 63: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 64: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 65: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 66: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 67: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 68: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 69: * SUCH DAMAGE.
! 70: *
! 71: * @(#)cgthree.c 8.2 (Berkeley) 10/30/93
! 72: */
! 73:
! 74: /*
! 75: * Color display (cgthree) driver.
! 76: * Works with the real Sun hardware, as well as various clones from Tatung,
! 77: * Integrix (S20), and the Vigra VS10-EK.
! 78: */
! 79:
! 80: #include <sys/param.h>
! 81: #include <sys/systm.h>
! 82: #include <sys/buf.h>
! 83: #include <sys/device.h>
! 84: #include <sys/ioctl.h>
! 85: #include <sys/malloc.h>
! 86: #include <sys/mman.h>
! 87: #include <sys/tty.h>
! 88: #include <sys/conf.h>
! 89:
! 90: #include <uvm/uvm_extern.h>
! 91:
! 92: #include <machine/autoconf.h>
! 93: #include <machine/pmap.h>
! 94: #include <machine/cpu.h>
! 95: #include <machine/conf.h>
! 96:
! 97: #include <dev/wscons/wsconsio.h>
! 98: #include <dev/wscons/wsdisplayvar.h>
! 99: #include <dev/rasops/rasops.h>
! 100: #include <machine/fbvar.h>
! 101:
! 102: #include <sparc/dev/btreg.h>
! 103: #include <sparc/dev/btvar.h>
! 104: #include <sparc/dev/cgthreereg.h>
! 105: #include <sparc/dev/sbusvar.h>
! 106:
! 107: /* per-display variables */
! 108: struct cgthree_softc {
! 109: struct sunfb sc_sunfb; /* common base part */
! 110: struct rom_reg sc_phys; /* phys address description */
! 111: volatile struct fbcontrol *sc_fbc; /* Brooktree registers */
! 112: union bt_cmap sc_cmap; /* Brooktree color map */
! 113: struct intrhand sc_ih;
! 114: };
! 115:
! 116: void cgthree_burner(void *, u_int, u_int);
! 117: int cgthree_intr(void *);
! 118: int cgthree_ioctl(void *, u_long, caddr_t, int, struct proc *);
! 119: static __inline__
! 120: void cgthree_loadcmap_deferred(struct cgthree_softc *, u_int, u_int);
! 121: paddr_t cgthree_mmap(void *, off_t, int);
! 122: void cgthree_setcolor(void *, u_int, u_int8_t, u_int8_t, u_int8_t);
! 123:
! 124: struct wsdisplay_accessops cgthree_accessops = {
! 125: cgthree_ioctl,
! 126: cgthree_mmap,
! 127: NULL, /* alloc_screen */
! 128: NULL, /* free_screen */
! 129: NULL, /* show_screen */
! 130: NULL, /* load_font */
! 131: NULL, /* scrollback */
! 132: NULL, /* getchar */
! 133: cgthree_burner,
! 134: NULL /* pollc */
! 135: };
! 136:
! 137: int cgthreematch(struct device *, void *, void *);
! 138: void cgthreeattach(struct device *, struct device *, void *);
! 139:
! 140: struct cfattach cgthree_ca = {
! 141: sizeof (struct cgthree_softc), cgthreematch, cgthreeattach
! 142: };
! 143:
! 144: struct cfdriver cgthree_cd = {
! 145: NULL, "cgthree", DV_DULL
! 146: };
! 147:
! 148: /* Video control parameters */
! 149: struct cg3_videoctrl {
! 150: u_int8_t sense;
! 151: u_int8_t vctrl[12];
! 152: } cg3_videoctrl[] = {
! 153: { /* cpd-1790 */
! 154: 0x31,
! 155: { 0xbb, 0x2b, 0x04, 0x14, 0xae, 0x03,
! 156: 0xa8, 0x24, 0x01, 0x05, 0xff, 0x01 },
! 157: },
! 158: { /* gdm-20e20 */
! 159: 0x41,
! 160: { 0xb7, 0x27, 0x03, 0x0f, 0xae, 0x03,
! 161: 0xae, 0x2a, 0x01, 0x09, 0xff, 0x01 },
! 162: },
! 163: { /* defaults, should be last */
! 164: 0xff,
! 165: { 0xbb, 0x2b, 0x03, 0x0b, 0xb3, 0x03,
! 166: 0xaf, 0x2b, 0x02, 0x0a, 0xff, 0x01 },
! 167: },
! 168: };
! 169:
! 170: int
! 171: cgthreematch(struct device *parent, void *vcf, void *aux)
! 172: {
! 173: struct cfdata *cf = vcf;
! 174: struct confargs *ca = aux;
! 175: struct romaux *ra = &ca->ca_ra;
! 176:
! 177: if (strcmp(cf->cf_driver->cd_name, ra->ra_name) &&
! 178: strcmp("cgRDI", ra->ra_name))
! 179: return (0);
! 180:
! 181: if (ca->ca_bustype != BUS_SBUS)
! 182: return (0);
! 183:
! 184: return (1);
! 185: }
! 186:
! 187: void
! 188: cgthreeattach(struct device *parent, struct device *self, void *args)
! 189: {
! 190: struct cgthree_softc *sc = (struct cgthree_softc *)self;
! 191: struct confargs *ca = args;
! 192: int node, pri, isrdi = 0, i;
! 193: volatile struct bt_regs *bt;
! 194: int isconsole;
! 195: char *nam;
! 196:
! 197: pri = ca->ca_ra.ra_intr[0].int_pri;
! 198: printf(" pri %d: ", pri);
! 199:
! 200: node = ca->ca_ra.ra_node;
! 201:
! 202: if (strcmp(ca->ca_ra.ra_name, "cgRDI") == 0) {
! 203: isrdi = 1;
! 204: nam = "cgRDI";
! 205: } else
! 206: nam = getpropstring(node, "model");
! 207:
! 208: if (nam != NULL && *nam != '\0')
! 209: printf("%s, ", nam);
! 210:
! 211: isconsole = node == fbnode;
! 212:
! 213: sc->sc_fbc = (volatile struct fbcontrol *)
! 214: mapiodev(ca->ca_ra.ra_reg, CG3REG_REG,
! 215: sizeof(struct fbcontrol));
! 216:
! 217: /* Transfer video magic to board, if it's not running */
! 218: if (isrdi == 0 && (sc->sc_fbc->fbc_ctrl & FBC_TIMING) == 0)
! 219: for (i = 0; i < sizeof(cg3_videoctrl)/sizeof(cg3_videoctrl[0]);
! 220: i++) {
! 221: volatile struct fbcontrol *fbc = sc->sc_fbc;
! 222: if (cg3_videoctrl[i].sense == 0xff ||
! 223: (fbc->fbc_status & FBS_MSENSE) ==
! 224: cg3_videoctrl[i].sense) {
! 225: int j;
! 226: #ifdef DEBUG
! 227: printf(" (setting video ctrl)");
! 228: #endif
! 229: for (j = 0; j < 12; j++)
! 230: fbc->fbc_vcontrol[j] =
! 231: cg3_videoctrl[i].vctrl[j];
! 232: fbc->fbc_ctrl |= FBC_TIMING;
! 233: break;
! 234: }
! 235: }
! 236:
! 237: sc->sc_phys = ca->ca_ra.ra_reg[0];
! 238:
! 239: sc->sc_ih.ih_fun = cgthree_intr;
! 240: sc->sc_ih.ih_arg = sc;
! 241: intr_establish(pri, &sc->sc_ih, IPL_FB, self->dv_xname);
! 242:
! 243: /* enable video */
! 244: cgthree_burner(sc, 1, 0);
! 245: bt = &sc->sc_fbc->fbc_dac;
! 246: BT_INIT(bt, 0);
! 247:
! 248: fb_setsize(&sc->sc_sunfb, 8, 1152, 900, node, ca->ca_bustype);
! 249: sc->sc_sunfb.sf_ro.ri_bits = mapiodev(ca->ca_ra.ra_reg, CG3REG_MEM,
! 250: round_page(sc->sc_sunfb.sf_fbsize));
! 251: sc->sc_sunfb.sf_ro.ri_hw = sc;
! 252:
! 253: printf("%dx%d\n", sc->sc_sunfb.sf_width, sc->sc_sunfb.sf_height);
! 254:
! 255: /*
! 256: * If the framebuffer width is under 1024x768, which is the case for
! 257: * some clones on laptops, as well as with the VS10-EK, switch from
! 258: * the PROM font to the more adequate 8x16 font here.
! 259: * However, we need to adjust two things in this case:
! 260: * - the display row should be overrided from the current PROM metrics,
! 261: * to prevent us from overwriting the last few lines of text.
! 262: * - if the 80x34 screen would make a large margin appear around it,
! 263: * choose to clear the screen rather than keeping old prom output in
! 264: * the margins.
! 265: * XXX there should be a rasops "clear margins" feature
! 266: */
! 267: fbwscons_init(&sc->sc_sunfb, isconsole &&
! 268: (sc->sc_sunfb.sf_width >= 1024) ? 0 : RI_CLEAR);
! 269: fbwscons_setcolormap(&sc->sc_sunfb, cgthree_setcolor);
! 270:
! 271: if (isconsole) {
! 272: fbwscons_console_init(&sc->sc_sunfb,
! 273: sc->sc_sunfb.sf_width >= 1024 ? -1 : 0);
! 274: }
! 275:
! 276: fbwscons_attach(&sc->sc_sunfb, &cgthree_accessops, isconsole);
! 277: }
! 278:
! 279: int
! 280: cgthree_ioctl(void *v, u_long cmd, caddr_t data, int flags, struct proc *p)
! 281: {
! 282: struct cgthree_softc *sc = v;
! 283: struct wsdisplay_fbinfo *wdf;
! 284: struct wsdisplay_cmap *cm;
! 285: int error;
! 286:
! 287: switch (cmd) {
! 288: case WSDISPLAYIO_GTYPE:
! 289: *(u_int *)data = WSDISPLAY_TYPE_SUNCG3;
! 290: break;
! 291: case WSDISPLAYIO_GINFO:
! 292: wdf = (struct wsdisplay_fbinfo *)data;
! 293: wdf->height = sc->sc_sunfb.sf_height;
! 294: wdf->width = sc->sc_sunfb.sf_width;
! 295: wdf->depth = sc->sc_sunfb.sf_depth;
! 296: wdf->cmsize = 256;
! 297: break;
! 298: case WSDISPLAYIO_LINEBYTES:
! 299: *(u_int *)data = sc->sc_sunfb.sf_linebytes;
! 300: break;
! 301:
! 302: case WSDISPLAYIO_GETCMAP:
! 303: cm = (struct wsdisplay_cmap *)data;
! 304: error = bt_getcmap(&sc->sc_cmap, cm);
! 305: if (error)
! 306: return (error);
! 307: break;
! 308:
! 309: case WSDISPLAYIO_PUTCMAP:
! 310: cm = (struct wsdisplay_cmap *)data;
! 311: error = bt_putcmap(&sc->sc_cmap, cm);
! 312: if (error)
! 313: return (error);
! 314: cgthree_loadcmap_deferred(sc, cm->index, cm->count);
! 315: break;
! 316:
! 317: case WSDISPLAYIO_SVIDEO:
! 318: case WSDISPLAYIO_GVIDEO:
! 319: break;
! 320:
! 321: case WSDISPLAYIO_GCURPOS:
! 322: case WSDISPLAYIO_SCURPOS:
! 323: case WSDISPLAYIO_GCURMAX:
! 324: case WSDISPLAYIO_GCURSOR:
! 325: case WSDISPLAYIO_SCURSOR:
! 326: default:
! 327: return (-1); /* not supported yet */
! 328: }
! 329:
! 330: return (0);
! 331: }
! 332:
! 333: paddr_t
! 334: cgthree_mmap(void *v, off_t offset, int prot)
! 335: {
! 336: struct cgthree_softc *sc = v;
! 337:
! 338: if (offset & PGOFSET)
! 339: return (-1);
! 340:
! 341: if (offset >= 0 && offset < sc->sc_sunfb.sf_fbsize) {
! 342: return (REG2PHYS(&sc->sc_phys,
! 343: CG3REG_MEM + offset) | PMAP_NC);
! 344: }
! 345:
! 346: return (-1);
! 347: }
! 348:
! 349: void
! 350: cgthree_setcolor(void *v, u_int index, u_int8_t r, u_int8_t g, u_int8_t b)
! 351: {
! 352: struct cgthree_softc *sc = v;
! 353:
! 354: bt_setcolor(&sc->sc_cmap, &sc->sc_fbc->fbc_dac, index, r, g, b, 0);
! 355: }
! 356:
! 357: static __inline__ void
! 358: cgthree_loadcmap_deferred(struct cgthree_softc *sc, u_int start, u_int ncolors)
! 359: {
! 360:
! 361: sc->sc_fbc->fbc_ctrl |= FBC_IENAB;
! 362: }
! 363:
! 364: void
! 365: cgthree_burner(void *v, u_int on, u_int flags)
! 366: {
! 367: struct cgthree_softc *sc = v;
! 368: int s;
! 369:
! 370: s = splhigh();
! 371: if (on)
! 372: sc->sc_fbc->fbc_ctrl |= FBC_VENAB | FBC_TIMING;
! 373: else {
! 374: sc->sc_fbc->fbc_ctrl &= ~FBC_VENAB;
! 375: if (flags & WSDISPLAY_BURN_VBLANK)
! 376: sc->sc_fbc->fbc_ctrl &= ~FBC_TIMING;
! 377: }
! 378: splx(s);
! 379: }
! 380:
! 381: int
! 382: cgthree_intr(void *v)
! 383: {
! 384: struct cgthree_softc *sc = v;
! 385:
! 386: if (!ISSET(sc->sc_fbc->fbc_ctrl, FBC_IENAB) ||
! 387: !ISSET(sc->sc_fbc->fbc_status, FBS_INTR)) {
! 388: /* Not expecting an interrupt, it's not for us. */
! 389: return (0);
! 390: }
! 391:
! 392: /* Acknowledge the interrupt and disable it. */
! 393: sc->sc_fbc->fbc_ctrl &= ~FBC_IENAB;
! 394:
! 395: bt_loadcmap(&sc->sc_cmap, &sc->sc_fbc->fbc_dac, 0, 256, 0);
! 396: return (1);
! 397: }
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