Annotation of sys/arch/sparc/dev/cgtwelve.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: cgtwelve.c,v 1.16 2007/03/13 19:40:48 miod Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 2002, 2003 Miodrag Vallat. All rights reserved.
! 5: *
! 6: * Redistribution and use in source and binary forms, with or without
! 7: * modification, are permitted provided that the following conditions
! 8: * are met:
! 9: * 1. Redistributions of source code must retain the above copyright
! 10: * notice, this list of conditions and the following disclaimer.
! 11: * 2. Redistributions in binary form must reproduce the above copyright
! 12: * notice, this list of conditions and the following disclaimer in the
! 13: * documentation and/or other materials provided with the distribution.
! 14: *
! 15: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 16: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
! 17: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
! 18: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
! 19: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 20: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 21: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 22: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 23: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
! 24: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 25: * POSSIBILITY OF SUCH DAMAGE.
! 26: */
! 27:
! 28: /*
! 29: * cgtwelve (GS) accelerated 24-bit framebuffer driver.
! 30: *
! 31: * Enough experiments and SMI's cg12reg.h made this possible.
! 32: */
! 33:
! 34: /*
! 35: * The cgtwelve framebuffer is a 3-slot SBUS card, that will fit only in
! 36: * SPARCstation 1, 1+, 2 and 5, or in an xbox SBUS extension.
! 37: *
! 38: * It is a 24-bit 3D accelerated framebuffer made by Matrox, featuring 4MB
! 39: * (regular model) or 8MB (high-res model) of video memory, a complex
! 40: * windowing engine, double buffering modes, three video planes (overlay,
! 41: * 8 bit and 24 bit color), and a lot of colormap combinations.
! 42: *
! 43: * All of this is driven by a set of three Bt462 ramdacs (latched unless
! 44: * explicitely programmed), and a couple of other Matrox-specific chips.
! 45: *
! 46: * XXX The high res card is untested.
! 47: */
! 48:
! 49: #include <sys/param.h>
! 50: #include <sys/systm.h>
! 51: #include <sys/buf.h>
! 52: #include <sys/device.h>
! 53: #include <sys/ioctl.h>
! 54: #include <sys/malloc.h>
! 55: #include <sys/mman.h>
! 56: #include <sys/tty.h>
! 57: #include <sys/conf.h>
! 58:
! 59: #include <uvm/uvm_extern.h>
! 60:
! 61: #include <machine/autoconf.h>
! 62: #include <machine/pmap.h>
! 63: #include <machine/cpu.h>
! 64: #include <machine/conf.h>
! 65:
! 66: #include <dev/wscons/wsconsio.h>
! 67: #include <dev/wscons/wsdisplayvar.h>
! 68: #include <dev/rasops/rasops.h>
! 69: #include <machine/fbvar.h>
! 70:
! 71: #include <sparc/dev/cgtwelvereg.h>
! 72: #include <sparc/dev/sbusvar.h>
! 73:
! 74: #include <dev/cons.h> /* for prom console hook */
! 75:
! 76: /* per-display variables */
! 77: struct cgtwelve_softc {
! 78: struct sunfb sc_sunfb; /* common base device */
! 79: struct rom_reg sc_phys;
! 80:
! 81: volatile struct cgtwelve_dpu *sc_dpu;
! 82: volatile struct cgtwelve_apu *sc_apu;
! 83: volatile struct cgtwelve_dac *sc_ramdac; /* RAMDAC registers */
! 84: volatile u_char *sc_overlay; /* overlay or enable plane */
! 85: volatile u_long *sc_inten; /* true color plane */
! 86:
! 87: int sc_highres;
! 88: };
! 89:
! 90: int cgtwelve_ioctl(void *, u_long, caddr_t, int, struct proc *);
! 91: paddr_t cgtwelve_mmap(void *, off_t, int);
! 92: void cgtwelve_prom(void *);
! 93: static __inline__
! 94: void cgtwelve_ramdac_wraddr(struct cgtwelve_softc *, u_int32_t);
! 95: void cgtwelve_reset(struct cgtwelve_softc *, int);
! 96:
! 97: struct wsdisplay_accessops cgtwelve_accessops = {
! 98: cgtwelve_ioctl,
! 99: cgtwelve_mmap,
! 100: NULL, /* alloc_screen */
! 101: NULL, /* free_screen */
! 102: NULL, /* show_screen */
! 103: NULL, /* load_font */
! 104: NULL, /* scrollback */
! 105: NULL, /* getchar */
! 106: NULL, /* burner */
! 107: NULL /* pollc */
! 108: };
! 109:
! 110: int cgtwelvematch(struct device *, void *, void *);
! 111: void cgtwelveattach(struct device *, struct device *, void *);
! 112:
! 113: struct cfattach cgtwelve_ca = {
! 114: sizeof(struct cgtwelve_softc), cgtwelvematch, cgtwelveattach
! 115: };
! 116:
! 117: struct cfdriver cgtwelve_cd = {
! 118: NULL, "cgtwelve", DV_DULL
! 119: };
! 120:
! 121:
! 122: int
! 123: cgtwelvematch(struct device *parent, void *vcf, void *aux)
! 124: {
! 125: struct cfdata *cf = vcf;
! 126: struct confargs *ca = aux;
! 127: struct romaux *ra = &ca->ca_ra;
! 128:
! 129: if (strcmp(cf->cf_driver->cd_name, ra->ra_name) != 0)
! 130: return (0);
! 131:
! 132: return (1);
! 133: }
! 134:
! 135: void
! 136: cgtwelveattach(struct device *parent, struct device *self, void *args)
! 137: {
! 138: struct cgtwelve_softc *sc = (struct cgtwelve_softc *)self;
! 139: struct confargs *ca = args;
! 140: int node;
! 141: int isconsole = 0;
! 142: char *ps;
! 143:
! 144: node = ca->ca_ra.ra_node;
! 145:
! 146: printf(": %s", getpropstring(node, "model"));
! 147: ps = getpropstring(node, "dev_id");
! 148: if (*ps != '\0')
! 149: printf(" (%s)", ps);
! 150: printf("\n");
! 151:
! 152: isconsole = node == fbnode;
! 153:
! 154: sc->sc_phys = ca->ca_ra.ra_reg[0];
! 155:
! 156: /*
! 157: * Map registers
! 158: */
! 159: sc->sc_dpu = (struct cgtwelve_dpu *)mapiodev(ca->ca_ra.ra_reg,
! 160: CG12_OFF_DPU, sizeof(struct cgtwelve_dpu));
! 161: sc->sc_apu = (struct cgtwelve_apu *)mapiodev(ca->ca_ra.ra_reg,
! 162: CG12_OFF_APU, sizeof(struct cgtwelve_apu));
! 163: sc->sc_ramdac = (struct cgtwelve_dac *)mapiodev(ca->ca_ra.ra_reg,
! 164: CG12_OFF_DAC, sizeof(struct cgtwelve_dac));
! 165:
! 166: /*
! 167: * The console is using the 1-bit overlay plane, while the prom
! 168: * will correctly report 32 bit depth.
! 169: */
! 170: fb_setsize(&sc->sc_sunfb, 1, CG12_WIDTH, CG12_HEIGHT,
! 171: node, ca->ca_bustype);
! 172: sc->sc_sunfb.sf_depth = 1;
! 173: sc->sc_sunfb.sf_linebytes = sc->sc_sunfb.sf_width / 8;
! 174: sc->sc_sunfb.sf_fbsize = sc->sc_sunfb.sf_height *
! 175: sc->sc_sunfb.sf_linebytes;
! 176:
! 177: sc->sc_highres = sc->sc_sunfb.sf_width == CG12_WIDTH_HR;
! 178:
! 179: /*
! 180: * Map planes
! 181: */
! 182: sc->sc_overlay = mapiodev(ca->ca_ra.ra_reg,
! 183: sc->sc_highres ? CG12_OFF_OVERLAY0_HR : CG12_OFF_OVERLAY0,
! 184: round_page(sc->sc_highres ? CG12_SIZE_OVERLAY_HR :
! 185: CG12_SIZE_OVERLAY));
! 186: sc->sc_inten = mapiodev(ca->ca_ra.ra_reg,
! 187: sc->sc_highres ? CG12_OFF_INTEN_HR : CG12_OFF_INTEN,
! 188: round_page(sc->sc_highres ? CG12_SIZE_COLOR24_HR :
! 189: CG12_SIZE_COLOR24));
! 190:
! 191: /* reset cursor & frame buffer controls */
! 192: sc->sc_sunfb.sf_depth = 0; /* force action */
! 193: cgtwelve_reset(sc, 1);
! 194:
! 195: sc->sc_sunfb.sf_ro.ri_bits = (void *)sc->sc_overlay;
! 196: sc->sc_sunfb.sf_ro.ri_hw = sc;
! 197: fbwscons_init(&sc->sc_sunfb, isconsole ? 0 : RI_CLEAR);
! 198:
! 199: if (isconsole) {
! 200: fbwscons_console_init(&sc->sc_sunfb, -1);
! 201: shutdownhook_establish(cgtwelve_prom, sc);
! 202: }
! 203:
! 204: printf("%s: %dx%d", self->dv_xname,
! 205: sc->sc_sunfb.sf_width, sc->sc_sunfb.sf_height);
! 206: ps = getpropstring(node, "ucoderev");
! 207: if (*ps != '\0')
! 208: printf(", microcode rev. %s", ps);
! 209: printf("\n");
! 210:
! 211: fbwscons_attach(&sc->sc_sunfb, &cgtwelve_accessops, isconsole);
! 212: }
! 213:
! 214: int
! 215: cgtwelve_ioctl(void *dev, u_long cmd, caddr_t data, int flags, struct proc *p)
! 216: {
! 217: struct cgtwelve_softc *sc = dev;
! 218: struct wsdisplay_fbinfo *wdf;
! 219:
! 220: /*
! 221: * Note that, although the emulation (text) mode is running in the
! 222: * overlay plane, we advertize the frame buffer as the full-blown
! 223: * 32-bit beast it is.
! 224: */
! 225: switch (cmd) {
! 226: case WSDISPLAYIO_GTYPE:
! 227: *(u_int *)data = WSDISPLAY_TYPE_SUNCG12;
! 228: break;
! 229: case WSDISPLAYIO_GINFO:
! 230: wdf = (struct wsdisplay_fbinfo *)data;
! 231: wdf->height = sc->sc_sunfb.sf_height;
! 232: wdf->width = sc->sc_sunfb.sf_width;
! 233: wdf->depth = 32;
! 234: wdf->cmsize = 0;
! 235: break;
! 236: case WSDISPLAYIO_GETSUPPORTEDDEPTH:
! 237: *(u_int *)data = WSDISPLAYIO_DEPTH_24_32;
! 238: break;
! 239: case WSDISPLAYIO_LINEBYTES:
! 240: *(u_int *)data = sc->sc_sunfb.sf_linebytes * 32;
! 241: break;
! 242:
! 243: case WSDISPLAYIO_GETCMAP:
! 244: case WSDISPLAYIO_PUTCMAP:
! 245: break;
! 246:
! 247: case WSDISPLAYIO_SMODE:
! 248: if (*(int *)data == WSDISPLAYIO_MODE_EMUL) {
! 249: /* Back from X11 to text mode */
! 250: cgtwelve_reset(sc, 1);
! 251: } else {
! 252: /* Starting X11, switch to 32 bit mode */
! 253: cgtwelve_reset(sc, 32);
! 254: }
! 255: break;
! 256:
! 257: case WSDISPLAYIO_SVIDEO:
! 258: case WSDISPLAYIO_GVIDEO:
! 259: break;
! 260:
! 261: default:
! 262: return (-1); /* not supported yet */
! 263: }
! 264:
! 265: return (0);
! 266: }
! 267:
! 268: void
! 269: cgtwelve_reset(struct cgtwelve_softc *sc, int depth)
! 270: {
! 271: u_int32_t c;
! 272:
! 273: if (sc->sc_sunfb.sf_depth != depth) {
! 274: if (depth == 1) {
! 275: /*
! 276: * Select the enable plane as sc_overlay, and fill it.
! 277: */
! 278: sc->sc_apu->hpage = sc->sc_highres ?
! 279: CG12_HPAGE_ENABLE_HR : CG12_HPAGE_ENABLE;
! 280: sc->sc_apu->haccess = CG12_HACCESS_ENABLE;
! 281: sc->sc_dpu->pln_sl_host = CG12_PLN_SL_ENABLE;
! 282: sc->sc_dpu->pln_rd_msk_host = CG12_PLN_RD_ENABLE;
! 283: sc->sc_dpu->pln_wr_msk_host = CG12_PLN_WR_ENABLE;
! 284:
! 285: memset((void *)sc->sc_overlay, 0xff, sc->sc_highres ?
! 286: CG12_SIZE_ENABLE_HR : CG12_SIZE_ENABLE);
! 287:
! 288: /*
! 289: * Select the overlay plane as sc_overlay.
! 290: */
! 291: sc->sc_apu->hpage = sc->sc_highres ?
! 292: CG12_HPAGE_OVERLAY_HR : CG12_HPAGE_OVERLAY;
! 293: sc->sc_apu->haccess = CG12_HACCESS_OVERLAY;
! 294: sc->sc_dpu->pln_sl_host = CG12_PLN_SL_OVERLAY;
! 295: sc->sc_dpu->pln_rd_msk_host = CG12_PLN_RD_OVERLAY;
! 296: sc->sc_dpu->pln_wr_msk_host = CG12_PLN_WR_OVERLAY;
! 297:
! 298: /*
! 299: * Upload a strict mono colormap, or the text
! 300: * upon returning from 32 bit mode would appear
! 301: * as (slightly dark) white on white.
! 302: */
! 303: cgtwelve_ramdac_wraddr(sc, 0);
! 304: sc->sc_ramdac->color = 0x00000000;
! 305: for (c = 1; c < 256; c++)
! 306: sc->sc_ramdac->color = 0x00ffffff;
! 307: } else {
! 308: /*
! 309: * Select the overlay plane as sc_overlay.
! 310: */
! 311: sc->sc_apu->hpage = sc->sc_highres ?
! 312: CG12_HPAGE_OVERLAY_HR : CG12_HPAGE_OVERLAY;
! 313: sc->sc_apu->haccess = CG12_HACCESS_OVERLAY;
! 314: sc->sc_dpu->pln_sl_host = CG12_PLN_SL_OVERLAY;
! 315: sc->sc_dpu->pln_rd_msk_host = CG12_PLN_RD_OVERLAY;
! 316: sc->sc_dpu->pln_wr_msk_host = CG12_PLN_WR_OVERLAY;
! 317:
! 318: /*
! 319: * Do not attempt to somewhat preserve screen
! 320: * contents - reading the overlay plane and writing
! 321: * to the color plane at the same time is not
! 322: * reliable, and allocating memory to save a copy
! 323: * of the overlay plane would be awful.
! 324: */
! 325: bzero((void *)sc->sc_overlay, sc->sc_highres ?
! 326: CG12_SIZE_OVERLAY_HR : CG12_SIZE_OVERLAY);
! 327:
! 328: /*
! 329: * Select the enable plane as sc_overlay, and clear it.
! 330: */
! 331: sc->sc_apu->hpage = sc->sc_highres ?
! 332: CG12_HPAGE_ENABLE_HR : CG12_HPAGE_ENABLE;
! 333: sc->sc_apu->haccess = CG12_HACCESS_ENABLE;
! 334: sc->sc_dpu->pln_sl_host = CG12_PLN_SL_ENABLE;
! 335: sc->sc_dpu->pln_rd_msk_host = CG12_PLN_RD_ENABLE;
! 336: sc->sc_dpu->pln_wr_msk_host = CG12_PLN_WR_ENABLE;
! 337:
! 338: bzero((void *)sc->sc_overlay, sc->sc_highres ?
! 339: CG12_SIZE_ENABLE_HR : CG12_SIZE_ENABLE);
! 340:
! 341: /*
! 342: * Select the intensity (color) plane, and clear it.
! 343: */
! 344: sc->sc_apu->hpage = sc->sc_highres ?
! 345: CG12_HPAGE_24BIT_HR : CG12_HPAGE_24BIT;
! 346: sc->sc_apu->haccess = CG12_HACCESS_24BIT;
! 347: sc->sc_dpu->pln_sl_host = CG12_PLN_SL_24BIT;
! 348: sc->sc_dpu->pln_rd_msk_host = CG12_PLN_RD_24BIT;
! 349: sc->sc_dpu->pln_wr_msk_host = CG12_PLN_WR_24BIT;
! 350:
! 351: memset((void *)sc->sc_inten, 0x00ffffff,
! 352: sc->sc_highres ?
! 353: CG12_SIZE_COLOR24_HR : CG12_SIZE_COLOR24);
! 354:
! 355: /*
! 356: * Use a direct colormap (ramp)
! 357: */
! 358: cgtwelve_ramdac_wraddr(sc, 0);
! 359: for (c = 0; c < 256; c++)
! 360: sc->sc_ramdac->color = c | (c << 8) | (c << 16);
! 361: }
! 362: }
! 363:
! 364: sc->sc_sunfb.sf_depth = depth;
! 365: }
! 366:
! 367: paddr_t
! 368: cgtwelve_mmap(void *v, off_t offset, int prot)
! 369: {
! 370: struct cgtwelve_softc *sc = v;
! 371:
! 372: if (offset & PGOFSET || offset < 0)
! 373: return (-1);
! 374:
! 375: /*
! 376: * Note that mmap() will invoke this function only if we are NOT
! 377: * in emulation mode, so we can assume 32 bit mode safely here.
! 378: */
! 379: if (offset < sc->sc_sunfb.sf_fbsize * 32) {
! 380: return (REG2PHYS(&sc->sc_phys,
! 381: (sc->sc_highres ? CG12_OFF_INTEN_HR :
! 382: CG12_OFF_INTEN) + offset) | PMAP_NC);
! 383: }
! 384:
! 385: return (-1);
! 386: }
! 387:
! 388: /*
! 389: * Simple Bt462 programming routines.
! 390: */
! 391:
! 392: static __inline__ void
! 393: cgtwelve_ramdac_wraddr(struct cgtwelve_softc *sc, u_int32_t addr)
! 394: {
! 395: sc->sc_ramdac->addr_lo = (addr & 0xff);
! 396: sc->sc_ramdac->addr_hi = ((addr >> 8) & 0xff);
! 397: }
! 398:
! 399: /*
! 400: * Shutdown hook used to restore PROM-compatible video mode on shutdown,
! 401: * so that the PROM prompt is visible again.
! 402: */
! 403: void
! 404: cgtwelve_prom(v)
! 405: void *v;
! 406: {
! 407: struct cgtwelve_softc *sc = v;
! 408: extern struct consdev consdev_prom;
! 409:
! 410: if (sc->sc_sunfb.sf_depth != 1) {
! 411: cgtwelve_reset(sc, 1);
! 412:
! 413: /*
! 414: * Go back to prom output for the last few messages, so they
! 415: * will be displayed correctly.
! 416: */
! 417: cn_tab = &consdev_prom;
! 418: }
! 419: }
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