1 /* $OpenBSD: bwtwo.c,v 1.18 2008/12/27 17:23:03 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 paddr_t bwtwo_mmap(void *, off_t, int); 108 int bwtwo_is_console(int); 109 void bwtwo_burner(void *, u_int, u_int); 110 111 struct wsdisplay_accessops bwtwo_accessops = { 112 bwtwo_ioctl, 113 bwtwo_mmap, 114 NULL, /* alloc_screen */ 115 NULL, /* free_screen */ 116 NULL, /* show_screen */ 117 NULL, /* load_font */ 118 NULL, /* scrollback */ 119 NULL, /* getchar */ 120 bwtwo_burner, 121 }; 122 123 int bwtwomatch(struct device *, void *, void *); 124 void bwtwoattach(struct device *, struct device *, void *); 125 126 struct cfattach bwtwo_ca = { 127 sizeof (struct bwtwo_softc), bwtwomatch, bwtwoattach 128 }; 129 130 struct cfdriver bwtwo_cd = { 131 NULL, "bwtwo", DV_DULL 132 }; 133 134 int 135 bwtwomatch(parent, vcf, aux) 136 struct device *parent; 137 void *vcf, *aux; 138 { 139 struct cfdata *cf = vcf; 140 struct sbus_attach_args *sa = aux; 141 142 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0); 143 } 144 145 void 146 bwtwoattach(parent, self, aux) 147 struct device *parent, *self; 148 void *aux; 149 { 150 struct bwtwo_softc *sc = (struct bwtwo_softc *)self; 151 struct sbus_attach_args *sa = aux; 152 int node, console; 153 const char *nam; 154 155 node = sa->sa_node; 156 sc->sc_bustag = sa->sa_bustag; 157 sc->sc_paddr = sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset); 158 159 fb_setsize(&sc->sc_sunfb, 1, 1152, 900, node, 0); 160 161 if (sa->sa_nreg != 1) { 162 printf(": expected %d registers, got %d\n", 1, sa->sa_nreg); 163 goto fail; 164 } 165 166 /* 167 * Map just CTRL and video RAM. 168 */ 169 if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[0].sbr_slot, 170 sa->sa_reg[0].sbr_offset + BWTWO_CTRL_OFFSET, 171 BWTWO_CTRL_SIZE, 0, 0, &sc->sc_ctrl_regs) != 0) { 172 printf(": cannot map ctrl registers\n"); 173 goto fail_ctrl; 174 } 175 176 if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[0].sbr_slot, 177 sa->sa_reg[0].sbr_offset + BWTWO_VID_OFFSET, 178 sc->sc_sunfb.sf_fbsize, BUS_SPACE_MAP_LINEAR, 179 0, &sc->sc_vid_regs) != 0) { 180 printf(": cannot map vid registers\n"); 181 goto fail_vid; 182 } 183 184 nam = getpropstring(node, "model"); 185 if (*nam == '\0') 186 nam = sa->sa_name; 187 printf(": %s", nam); 188 189 console = bwtwo_is_console(node); 190 191 bwtwo_burner(sc, 1, 0); 192 193 printf(", %dx%d\n", sc->sc_sunfb.sf_width, sc->sc_sunfb.sf_height); 194 195 sc->sc_sunfb.sf_ro.ri_bits = (void *)bus_space_vaddr(sc->sc_bustag, 196 sc->sc_vid_regs); 197 sc->sc_sunfb.sf_ro.ri_hw = sc; 198 fbwscons_init(&sc->sc_sunfb, 0, console); 199 200 if (console) 201 fbwscons_console_init(&sc->sc_sunfb, -1); 202 203 fbwscons_attach(&sc->sc_sunfb, &bwtwo_accessops, console); 204 205 return; 206 207 fail_vid: 208 bus_space_unmap(sa->sa_bustag, sc->sc_ctrl_regs, BWTWO_CTRL_SIZE); 209 fail_ctrl: 210 fail: 211 ; 212 } 213 214 int 215 bwtwo_ioctl(v, cmd, data, flags, p) 216 void *v; 217 u_long cmd; 218 caddr_t data; 219 int flags; 220 struct proc *p; 221 { 222 struct bwtwo_softc *sc = v; 223 struct wsdisplay_fbinfo *wdf; 224 225 switch (cmd) { 226 case WSDISPLAYIO_GTYPE: 227 *(u_int *)data = WSDISPLAY_TYPE_SUNBW; 228 break; 229 case WSDISPLAYIO_GINFO: 230 wdf = (void *)data; 231 wdf->height = sc->sc_sunfb.sf_height; 232 wdf->width = sc->sc_sunfb.sf_width; 233 wdf->depth = sc->sc_sunfb.sf_depth; 234 wdf->cmsize = 0; 235 break; 236 case WSDISPLAYIO_LINEBYTES: 237 *(u_int *)data = sc->sc_sunfb.sf_linebytes; 238 break; 239 240 case WSDISPLAYIO_GETCMAP: 241 case WSDISPLAYIO_PUTCMAP: 242 break; 243 244 case WSDISPLAYIO_SVIDEO: 245 case WSDISPLAYIO_GVIDEO: 246 break; 247 248 case WSDISPLAYIO_GCURPOS: 249 case WSDISPLAYIO_SCURPOS: 250 case WSDISPLAYIO_GCURMAX: 251 case WSDISPLAYIO_GCURSOR: 252 case WSDISPLAYIO_SCURSOR: 253 default: 254 return -1; /* not supported yet */ 255 } 256 257 return (0); 258 } 259 260 paddr_t 261 bwtwo_mmap(v, offset, prot) 262 void *v; 263 off_t offset; 264 int prot; 265 { 266 struct bwtwo_softc *sc = v; 267 268 if (offset & PGOFSET) 269 return (-1); 270 271 if (offset >= 0 && offset < sc->sc_sunfb.sf_fbsize) 272 return (bus_space_mmap(sc->sc_bustag, sc->sc_paddr, 273 BWTWO_VID_OFFSET + offset, prot, BUS_SPACE_MAP_LINEAR)); 274 275 return (-1); 276 } 277 278 int 279 bwtwo_is_console(node) 280 int node; 281 { 282 extern int fbnode; 283 284 return (fbnode == node); 285 } 286 287 void 288 bwtwo_burner(vsc, on, flags) 289 void *vsc; 290 u_int on, flags; 291 { 292 struct bwtwo_softc *sc = vsc; 293 int s; 294 u_int8_t fbc; 295 296 s = splhigh(); 297 fbc = FBC_READ(sc, FBC_CTRL); 298 if (on) 299 fbc |= FBC_CTRL_VENAB | FBC_CTRL_TIME; 300 else { 301 fbc &= ~FBC_CTRL_VENAB; 302 if (flags & WSDISPLAY_BURN_VBLANK) 303 fbc &= ~FBC_CTRL_TIME; 304 } 305 FBC_WRITE(sc, FBC_CTRL, fbc); 306 splx(s); 307 } 308