Annotation of sys/dev/sbus/bwtwo.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: bwtwo.c,v 1.17 2006/12/17 22:18:16 miod Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 2002 Jason L. Wright (jason@thought.net)
! 5: * All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: *
! 16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 17: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
! 18: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
! 19: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
! 20: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 21: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 22: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 23: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 24: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
! 25: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 26: * POSSIBILITY OF SUCH DAMAGE.
! 27: *
! 28: * Effort sponsored in part by the Defense Advanced Research Projects
! 29: * Agency (DARPA) and Air Force Research Laboratory, Air Force
! 30: * Materiel Command, USAF, under agreement number F30602-01-2-0537.
! 31: *
! 32: */
! 33:
! 34: #include <sys/param.h>
! 35: #include <sys/systm.h>
! 36: #include <sys/kernel.h>
! 37: #include <sys/errno.h>
! 38: #include <sys/device.h>
! 39: #include <sys/ioctl.h>
! 40: #include <sys/malloc.h>
! 41:
! 42: #include <machine/bus.h>
! 43: #include <machine/intr.h>
! 44: #include <machine/autoconf.h>
! 45: #include <machine/openfirm.h>
! 46:
! 47: #include <dev/sbus/sbusvar.h>
! 48: #include <dev/wscons/wsconsio.h>
! 49: #include <dev/wscons/wsdisplayvar.h>
! 50: #include <dev/rasops/rasops.h>
! 51: #include <machine/fbvar.h>
! 52:
! 53: #define BWTWO_CTRL_OFFSET 0x400000
! 54: #define BWTWO_CTRL_SIZE (sizeof(u_int32_t) * 8)
! 55: #define BWTWO_VID_OFFSET 0x800000
! 56: #define BWTWO_VID_SIZE (1024 * 1024)
! 57:
! 58: #define FBC_CTRL 0x10 /* control */
! 59: #define FBC_STAT 0x11 /* status */
! 60: #define FBC_START 0x12 /* cursor start */
! 61: #define FBC_END 0x13 /* cursor end */
! 62: #define FBC_VCTRL 0x14 /* 12 bytes of timing goo */
! 63:
! 64: #define FBC_CTRL_IENAB 0x80 /* interrupt enable */
! 65: #define FBC_CTRL_VENAB 0x40 /* video enable */
! 66: #define FBC_CTRL_TIME 0x20 /* timing enable */
! 67: #define FBC_CTRL_CURS 0x10 /* cursor compare enable */
! 68: #define FBC_CTRL_XTAL 0x0c /* xtal select (0,1,2,test): */
! 69: #define FBC_CTRL_XTAL_0 0x00 /* 0 */
! 70: #define FBC_CTRL_XTAL_1 0x04 /* 0 */
! 71: #define FBC_CTRL_XTAL_2 0x08 /* 0 */
! 72: #define FBC_CTRL_XTAL_TEST 0x0c /* 0 */
! 73: #define FBC_CTRL_DIV 0x03 /* divisor (1,2,3,4): */
! 74: #define FBC_CTRL_DIV_1 0x00 /* / 1 */
! 75: #define FBC_CTRL_DIV_2 0x01 /* / 2 */
! 76: #define FBC_CTRL_DIV_3 0x02 /* / 3 */
! 77: #define FBC_CTRL_DIV_4 0x03 /* / 4 */
! 78:
! 79: #define FBC_STAT_INTR 0x80 /* interrupt pending */
! 80: #define FBC_STAT_RES 0x70 /* monitor sense: */
! 81: #define FBC_STAT_RES_1024 0x10 /* 1024x768 */
! 82: #define FBC_STAT_RES_1280 0x40 /* 1280x1024 */
! 83: #define FBC_STAT_RES_1152 0x30 /* 1152x900 */
! 84: #define FBC_STAT_RES_1152A 0x40 /* 1152x900x76, A */
! 85: #define FBC_STAT_RES_1600 0x50 /* 1600x1200 */
! 86: #define FBC_STAT_RES_1152B 0x60 /* 1152x900x86, B */
! 87: #define FBC_STAT_ID 0x0f /* id mask: */
! 88: #define FBC_STAT_ID_COLOR 0x01 /* color */
! 89: #define FBC_STAT_ID_MONO 0x02 /* monochrome */
! 90: #define FBC_STAT_ID_MONOECL 0x03 /* monochrome, ecl */
! 91:
! 92: #define FBC_READ(sc, reg) \
! 93: bus_space_read_1((sc)->sc_bustag, (sc)->sc_ctrl_regs, (reg))
! 94: #define FBC_WRITE(sc, reg, val) \
! 95: bus_space_write_1((sc)->sc_bustag, (sc)->sc_ctrl_regs, (reg), (val))
! 96:
! 97: struct bwtwo_softc {
! 98: struct sunfb sc_sunfb;
! 99: bus_space_tag_t sc_bustag;
! 100: bus_addr_t sc_paddr;
! 101: bus_space_handle_t sc_ctrl_regs;
! 102: bus_space_handle_t sc_vid_regs;
! 103: int sc_nscreens;
! 104: };
! 105:
! 106: int bwtwo_ioctl(void *, u_long, caddr_t, int, struct proc *);
! 107: int bwtwo_alloc_screen(void *, const struct wsscreen_descr *, void **,
! 108: int *, int *, long *);
! 109: void bwtwo_free_screen(void *, void *);
! 110: int bwtwo_show_screen(void *, void *, int, void (*cb)(void *, int, int),
! 111: void *);
! 112: paddr_t bwtwo_mmap(void *, off_t, int);
! 113: int bwtwo_is_console(int);
! 114: void bwtwo_burner(void *, u_int, u_int);
! 115:
! 116: struct wsdisplay_accessops bwtwo_accessops = {
! 117: bwtwo_ioctl,
! 118: bwtwo_mmap,
! 119: bwtwo_alloc_screen,
! 120: bwtwo_free_screen,
! 121: bwtwo_show_screen,
! 122: NULL, /* load_font */
! 123: NULL, /* scrollback */
! 124: NULL, /* getchar */
! 125: bwtwo_burner,
! 126: };
! 127:
! 128: int bwtwomatch(struct device *, void *, void *);
! 129: void bwtwoattach(struct device *, struct device *, void *);
! 130:
! 131: struct cfattach bwtwo_ca = {
! 132: sizeof (struct bwtwo_softc), bwtwomatch, bwtwoattach
! 133: };
! 134:
! 135: struct cfdriver bwtwo_cd = {
! 136: NULL, "bwtwo", DV_DULL
! 137: };
! 138:
! 139: int
! 140: bwtwomatch(parent, vcf, aux)
! 141: struct device *parent;
! 142: void *vcf, *aux;
! 143: {
! 144: struct cfdata *cf = vcf;
! 145: struct sbus_attach_args *sa = aux;
! 146:
! 147: return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0);
! 148: }
! 149:
! 150: void
! 151: bwtwoattach(parent, self, aux)
! 152: struct device *parent, *self;
! 153: void *aux;
! 154: {
! 155: struct bwtwo_softc *sc = (struct bwtwo_softc *)self;
! 156: struct sbus_attach_args *sa = aux;
! 157: int node, console;
! 158: const char *nam;
! 159:
! 160: node = sa->sa_node;
! 161: sc->sc_bustag = sa->sa_bustag;
! 162: sc->sc_paddr = sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset);
! 163:
! 164: fb_setsize(&sc->sc_sunfb, 1, 1152, 900, node, 0);
! 165:
! 166: if (sa->sa_nreg != 1) {
! 167: printf(": expected %d registers, got %d\n", 1, sa->sa_nreg);
! 168: goto fail;
! 169: }
! 170:
! 171: /*
! 172: * Map just CTRL and video RAM.
! 173: */
! 174: if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[0].sbr_slot,
! 175: sa->sa_reg[0].sbr_offset + BWTWO_CTRL_OFFSET,
! 176: BWTWO_CTRL_SIZE, 0, 0, &sc->sc_ctrl_regs) != 0) {
! 177: printf(": cannot map ctrl registers\n");
! 178: goto fail_ctrl;
! 179: }
! 180:
! 181: if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[0].sbr_slot,
! 182: sa->sa_reg[0].sbr_offset + BWTWO_VID_OFFSET,
! 183: sc->sc_sunfb.sf_fbsize, BUS_SPACE_MAP_LINEAR,
! 184: 0, &sc->sc_vid_regs) != 0) {
! 185: printf(": cannot map vid registers\n");
! 186: goto fail_vid;
! 187: }
! 188:
! 189: nam = getpropstring(node, "model");
! 190: if (*nam == '\0')
! 191: nam = sa->sa_name;
! 192: printf(": %s", nam);
! 193:
! 194: console = bwtwo_is_console(node);
! 195:
! 196: bwtwo_burner(sc, 1, 0);
! 197:
! 198: printf(", %dx%d\n", sc->sc_sunfb.sf_width, sc->sc_sunfb.sf_height);
! 199:
! 200: sc->sc_sunfb.sf_ro.ri_bits = (void *)bus_space_vaddr(sc->sc_bustag,
! 201: sc->sc_vid_regs);
! 202: sc->sc_sunfb.sf_ro.ri_hw = sc;
! 203: fbwscons_init(&sc->sc_sunfb, console ? 0 : RI_CLEAR);
! 204:
! 205: if (console) {
! 206: fbwscons_console_init(&sc->sc_sunfb, -1);
! 207: }
! 208:
! 209: fbwscons_attach(&sc->sc_sunfb, &bwtwo_accessops, console);
! 210:
! 211: return;
! 212:
! 213: fail_vid:
! 214: bus_space_unmap(sa->sa_bustag, sc->sc_ctrl_regs, BWTWO_CTRL_SIZE);
! 215: fail_ctrl:
! 216: fail:
! 217: ;
! 218: }
! 219:
! 220: int
! 221: bwtwo_ioctl(v, cmd, data, flags, p)
! 222: void *v;
! 223: u_long cmd;
! 224: caddr_t data;
! 225: int flags;
! 226: struct proc *p;
! 227: {
! 228: struct bwtwo_softc *sc = v;
! 229: struct wsdisplay_fbinfo *wdf;
! 230:
! 231: switch (cmd) {
! 232: case WSDISPLAYIO_GTYPE:
! 233: *(u_int *)data = WSDISPLAY_TYPE_SUNBW;
! 234: break;
! 235: case WSDISPLAYIO_GINFO:
! 236: wdf = (void *)data;
! 237: wdf->height = sc->sc_sunfb.sf_height;
! 238: wdf->width = sc->sc_sunfb.sf_width;
! 239: wdf->depth = sc->sc_sunfb.sf_depth;
! 240: wdf->cmsize = 0;
! 241: break;
! 242: case WSDISPLAYIO_LINEBYTES:
! 243: *(u_int *)data = sc->sc_sunfb.sf_linebytes;
! 244: break;
! 245:
! 246: case WSDISPLAYIO_GETCMAP:
! 247: case WSDISPLAYIO_PUTCMAP:
! 248: break;
! 249:
! 250: case WSDISPLAYIO_SVIDEO:
! 251: case WSDISPLAYIO_GVIDEO:
! 252: break;
! 253:
! 254: case WSDISPLAYIO_GCURPOS:
! 255: case WSDISPLAYIO_SCURPOS:
! 256: case WSDISPLAYIO_GCURMAX:
! 257: case WSDISPLAYIO_GCURSOR:
! 258: case WSDISPLAYIO_SCURSOR:
! 259: default:
! 260: return -1; /* not supported yet */
! 261: }
! 262:
! 263: return (0);
! 264: }
! 265:
! 266: int
! 267: bwtwo_alloc_screen(v, type, cookiep, curxp, curyp, attrp)
! 268: void *v;
! 269: const struct wsscreen_descr *type;
! 270: void **cookiep;
! 271: int *curxp, *curyp;
! 272: long *attrp;
! 273: {
! 274: struct bwtwo_softc *sc = v;
! 275:
! 276: if (sc->sc_nscreens > 0)
! 277: return (ENOMEM);
! 278:
! 279: *cookiep = &sc->sc_sunfb.sf_ro;
! 280: *curyp = 0;
! 281: *curxp = 0;
! 282: sc->sc_sunfb.sf_ro.ri_ops.alloc_attr(&sc->sc_sunfb.sf_ro,
! 283: 0, 0, 0, attrp);
! 284: sc->sc_nscreens++;
! 285: return (0);
! 286: }
! 287:
! 288: void
! 289: bwtwo_free_screen(v, cookie)
! 290: void *v;
! 291: void *cookie;
! 292: {
! 293: struct bwtwo_softc *sc = v;
! 294:
! 295: sc->sc_nscreens--;
! 296: }
! 297:
! 298: int
! 299: bwtwo_show_screen(v, cookie, waitok, cb, cbarg)
! 300: void *v;
! 301: void *cookie;
! 302: int waitok;
! 303: void (*cb)(void *, int, int);
! 304: void *cbarg;
! 305: {
! 306: return (0);
! 307: }
! 308:
! 309: #define START (128 * 1024 + 128 * 1024)
! 310: #define NOOVERLAY (0x04000000)
! 311:
! 312: paddr_t
! 313: bwtwo_mmap(v, offset, prot)
! 314: void *v;
! 315: off_t offset;
! 316: int prot;
! 317: {
! 318: struct bwtwo_softc *sc = v;
! 319:
! 320: if (offset & PGOFSET)
! 321: return (-1);
! 322:
! 323: if (offset >= 0 && offset < sc->sc_sunfb.sf_fbsize)
! 324: return (bus_space_mmap(sc->sc_bustag, sc->sc_paddr,
! 325: BWTWO_VID_OFFSET + offset, prot, BUS_SPACE_MAP_LINEAR));
! 326:
! 327: return (-1);
! 328: }
! 329:
! 330: int
! 331: bwtwo_is_console(node)
! 332: int node;
! 333: {
! 334: extern int fbnode;
! 335:
! 336: return (fbnode == node);
! 337: }
! 338:
! 339: void
! 340: bwtwo_burner(vsc, on, flags)
! 341: void *vsc;
! 342: u_int on, flags;
! 343: {
! 344: struct bwtwo_softc *sc = vsc;
! 345: int s;
! 346: u_int8_t fbc;
! 347:
! 348: s = splhigh();
! 349: fbc = FBC_READ(sc, FBC_CTRL);
! 350: if (on)
! 351: fbc |= FBC_CTRL_VENAB | FBC_CTRL_TIME;
! 352: else {
! 353: fbc &= ~FBC_CTRL_VENAB;
! 354: if (flags & WSDISPLAY_BURN_VBLANK)
! 355: fbc &= ~FBC_CTRL_TIME;
! 356: }
! 357: FBC_WRITE(sc, FBC_CTRL, fbc);
! 358: splx(s);
! 359: }
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