xafb.c revision 1.5.6.2
1 /* $NetBSD: xafb.c,v 1.5.6.2 2004/08/05 20:23:05 skrll Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 Tsubai Masanari. 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 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* "xa" frame buffer driver. Currently supports 1280x1024x8 only. */ 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: xafb.c,v 1.5.6.2 2004/08/05 20:23:05 skrll Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/buf.h> 36 #include <sys/device.h> 37 #include <sys/ioctl.h> 38 #include <sys/malloc.h> 39 #include <sys/systm.h> 40 41 #include <uvm/uvm_extern.h> 42 43 #include <machine/adrsmap.h> 44 #include <machine/apcall.h> 45 46 #include <machine/wsconsio.h> 47 #include <dev/wscons/wsdisplayvar.h> 48 #include <dev/rasops/rasops.h> 49 50 #include <newsmips/apbus/apbusvar.h> 51 52 struct xafb_reg { 53 volatile u_int r0; 54 volatile u_int index; 55 volatile u_int r2; 56 volatile u_int zero; 57 volatile u_int r4; 58 volatile u_int r5; 59 volatile u_int r6; 60 volatile u_int rgb; 61 }; 62 63 struct xafb_devconfig { 64 volatile u_char *dc_fbbase; /* VRAM base address */ 65 paddr_t dc_fbpaddr; /* VRAM physical address */ 66 struct xafb_reg *dc_reg; /* register address */ 67 struct rasops_info dc_ri; 68 }; 69 70 struct xafb_softc { 71 struct device sc_dev; 72 struct xafb_devconfig *sc_dc; 73 int sc_nscreens; 74 u_char sc_cmap_red[256]; 75 u_char sc_cmap_green[256]; 76 u_char sc_cmap_blue[256]; 77 }; 78 79 int xafb_match __P((struct device *, struct cfdata *, void *)); 80 void xafb_attach __P((struct device *, struct device *, void *)); 81 82 int xafb_common_init __P((struct xafb_devconfig *)); 83 int xafb_is_console __P((void)); 84 85 int xafb_ioctl __P((void *, u_long, caddr_t, int, struct proc *)); 86 paddr_t xafb_mmap __P((void *, off_t, int)); 87 int xafb_alloc_screen __P((void *, const struct wsscreen_descr *, 88 void **, int *, int *, long *)); 89 void xafb_free_screen __P((void *, void *)); 90 int xafb_show_screen __P((void *, void *, int, 91 void (*) (void *, int, int), void *)); 92 93 int xafb_cnattach __P((void)); 94 int xafb_getcmap __P((struct xafb_softc *, struct wsdisplay_cmap *)); 95 int xafb_putcmap __P((struct xafb_softc *, struct wsdisplay_cmap *)); 96 97 static __inline void xafb_setcolor(struct xafb_devconfig *, int, int, int, int); 98 99 CFATTACH_DECL(xafb, sizeof(struct xafb_softc), 100 xafb_match, xafb_attach, NULL, NULL); 101 102 struct xafb_devconfig xafb_console_dc; 103 104 struct wsdisplay_accessops xafb_accessops = { 105 xafb_ioctl, 106 xafb_mmap, 107 xafb_alloc_screen, 108 xafb_free_screen, 109 xafb_show_screen, 110 NULL /* load_font */ 111 }; 112 113 struct wsscreen_descr xafb_stdscreen = { 114 "std", 115 0, 0, 116 0, 117 0, 0, 118 WSSCREEN_REVERSE 119 }; 120 121 const struct wsscreen_descr *xafb_scrlist[] = { 122 &xafb_stdscreen 123 }; 124 125 struct wsscreen_list xafb_screenlist = { 126 sizeof(xafb_scrlist) / sizeof(xafb_scrlist[0]), xafb_scrlist 127 }; 128 129 int 130 xafb_match(parent, match, aux) 131 struct device *parent; 132 struct cfdata *match; 133 void *aux; 134 { 135 struct apbus_attach_args *apa = aux; 136 137 if (strcmp(apa->apa_name, "xa") != 0) 138 return 0; 139 140 return 1; 141 } 142 143 void 144 xafb_attach(parent, self, aux) 145 struct device *parent, *self; 146 void *aux; 147 { 148 struct xafb_softc *sc = (void *)self; 149 struct apbus_attach_args *apa = aux; 150 struct wsemuldisplaydev_attach_args wsa; 151 struct xafb_devconfig *dc; 152 struct rasops_info *ri; 153 int console, i; 154 155 console = xafb_is_console(); 156 157 if (console) { 158 dc = &xafb_console_dc; 159 ri = &dc->dc_ri; 160 sc->sc_nscreens = 1; 161 } else { 162 dc = malloc(sizeof(struct xafb_devconfig), M_DEVBUF, M_WAITOK); 163 bzero(dc, sizeof(struct xafb_devconfig)); 164 dc->dc_fbpaddr = (paddr_t)0x10000000; 165 dc->dc_fbbase = (void *)MIPS_PHYS_TO_KSEG1(dc->dc_fbpaddr); 166 dc->dc_reg = (void *)(apa->apa_hwbase + 0x3000); 167 if (xafb_common_init(dc) != 0) { 168 printf(": couldn't initialize device\n"); 169 return; 170 } 171 172 ri = &dc->dc_ri; 173 174 /* clear screen */ 175 (*ri->ri_ops.eraserows)(ri, 0, ri->ri_rows, 0); 176 } 177 sc->sc_dc = dc; 178 179 for (i = 0; i < 256; i++) { 180 sc->sc_cmap_red[i] = i; 181 sc->sc_cmap_green[i] = i; 182 sc->sc_cmap_blue[i] = i; 183 } 184 185 printf(": %d x %d, %dbpp\n", ri->ri_width, ri->ri_height, ri->ri_depth); 186 187 wsa.console = console; 188 wsa.scrdata = &xafb_screenlist; 189 wsa.accessops = &xafb_accessops; 190 wsa.accesscookie = sc; 191 192 config_found(self, &wsa, wsemuldisplaydevprint); 193 } 194 195 void 196 xafb_setcolor(dc, index, r, g, b) 197 struct xafb_devconfig *dc; 198 int index, r, g, b; 199 { 200 volatile struct xafb_reg *reg = dc->dc_reg; 201 202 reg->index = index; 203 reg->zero = 0; 204 reg->rgb = r; 205 reg->rgb = g; 206 reg->rgb = b; 207 } 208 209 int 210 xafb_common_init(dc) 211 struct xafb_devconfig *dc; 212 { 213 struct rasops_info *ri = &dc->dc_ri; 214 int i; 215 216 for (i = 0; i < 256; i++) 217 xafb_setcolor(dc, i, i, i, i); 218 219 /* initialize rasops */ 220 ri->ri_width = 1280; 221 ri->ri_height = 1024; 222 ri->ri_depth = 8; 223 ri->ri_stride = 2048; 224 ri->ri_bits = (void *)dc->dc_fbbase; 225 ri->ri_flg = RI_FORCEMONO | RI_FULLCLEAR; 226 227 rasops_init(ri, 44, 100); 228 229 /* mono */ 230 ri->ri_devcmap[0] = 0; /* bg */ 231 ri->ri_devcmap[1] = 0xffffffff; /* fg */ 232 233 xafb_stdscreen.nrows = ri->ri_rows; 234 xafb_stdscreen.ncols = ri->ri_cols; 235 xafb_stdscreen.textops = &ri->ri_ops; 236 xafb_stdscreen.capabilities = ri->ri_caps; 237 238 return 0; 239 } 240 241 int 242 xafb_is_console() 243 { 244 volatile u_int *dipsw = (void *)NEWS5000_DIP_SWITCH; 245 246 if (*dipsw & 1) /* XXX right? */ 247 return 1; 248 249 return 0; 250 } 251 252 int 253 xafb_ioctl(v, cmd, data, flag, p) 254 void *v; 255 u_long cmd; 256 caddr_t data; 257 int flag; 258 struct proc *p; 259 { 260 struct xafb_softc *sc = v; 261 struct xafb_devconfig *dc = sc->sc_dc; 262 struct newsmips_wsdisplay_fbinfo *nwdf = (void *)data; 263 struct wsdisplay_fbinfo *wdf = (void *)data; 264 265 switch (cmd) { 266 case WSDISPLAYIO_GTYPE: 267 *(int *)data = WSDISPLAY_TYPE_UNKNOWN; /* XXX */ 268 return 0; 269 270 case NEWSMIPS_WSDISPLAYIO_GINFO: 271 nwdf->stride = dc->dc_ri.ri_stride; 272 /* FALLTHROUGH */ 273 case WSDISPLAYIO_GINFO: 274 wdf->height = dc->dc_ri.ri_height; 275 wdf->width = dc->dc_ri.ri_width; 276 wdf->depth = dc->dc_ri.ri_depth; 277 wdf->cmsize = 256; 278 return 0; 279 280 case WSDISPLAYIO_GETCMAP: 281 return xafb_getcmap(sc, (struct wsdisplay_cmap *)data); 282 283 case WSDISPLAYIO_PUTCMAP: 284 return xafb_putcmap(sc, (struct wsdisplay_cmap *)data); 285 286 /* case WSDISPLAYIO_SVIDEO: */ 287 } 288 return EPASSTHROUGH; 289 } 290 291 paddr_t 292 xafb_mmap(v, offset, prot) 293 void *v; 294 off_t offset; 295 int prot; 296 { 297 struct xafb_softc *sc = v; 298 struct xafb_devconfig *dc = sc->sc_dc; 299 struct rasops_info *ri = &dc->dc_ri; 300 301 if (offset >= (ri->ri_stride * ri->ri_height) || offset < 0) 302 return -1; 303 304 return mips_btop(dc->dc_fbpaddr + offset); 305 } 306 307 int 308 xafb_alloc_screen(v, scrdesc, cookiep, ccolp, crowp, attrp) 309 void *v; 310 const struct wsscreen_descr *scrdesc; 311 void **cookiep; 312 int *ccolp, *crowp; 313 long *attrp; 314 { 315 struct xafb_softc *sc = v; 316 struct rasops_info *ri = &sc->sc_dc->dc_ri; 317 long defattr; 318 319 if (sc->sc_nscreens > 0) 320 return ENOMEM; 321 322 *cookiep = ri; 323 *ccolp = *crowp = 0; 324 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 325 *attrp = defattr; 326 sc->sc_nscreens++; 327 328 return 0; 329 } 330 331 void 332 xafb_free_screen(v, cookie) 333 void *v; 334 void *cookie; 335 { 336 struct xafb_softc *sc = v; 337 338 if (sc->sc_dc == &xafb_console_dc) 339 panic("xafb_free_screen: console"); 340 341 sc->sc_nscreens--; 342 } 343 344 int 345 xafb_show_screen(v, cookie, waitok, cb, cbarg) 346 void *v; 347 void *cookie; 348 int waitok; 349 void (*cb) __P((void *, int, int)); 350 void *cbarg; 351 { 352 return 0; 353 } 354 355 int 356 xafb_cnattach() 357 { 358 struct xafb_devconfig *dc = &xafb_console_dc; 359 struct rasops_info *ri = &dc->dc_ri; 360 long defattr; 361 int crow = 0; 362 363 if (!xafb_is_console()) 364 return -1; 365 366 dc->dc_fbpaddr = (paddr_t)0x10000000; 367 dc->dc_fbbase = (void *)MIPS_PHYS_TO_KSEG1(dc->dc_fbpaddr); 368 dc->dc_reg = (void *)0xb4903000; /* XXX */ 369 xafb_common_init(dc); 370 371 crow = 0; /* XXX current cursor pos */ 372 373 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 374 wsdisplay_cnattach(&xafb_stdscreen, &dc->dc_ri, 0, crow, defattr); 375 376 return 0; 377 } 378 379 int 380 xafb_getcmap(sc, cm) 381 struct xafb_softc *sc; 382 struct wsdisplay_cmap *cm; 383 { 384 u_int index = cm->index; 385 u_int count = cm->count; 386 int error; 387 388 if (index >= 256 || count > 256 || index + count > 256) 389 return EINVAL; 390 391 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 392 if (error) 393 return error; 394 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 395 if (error) 396 return error; 397 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 398 if (error) 399 return error; 400 401 return 0; 402 } 403 404 int 405 xafb_putcmap(sc, cm) 406 struct xafb_softc *sc; 407 struct wsdisplay_cmap *cm; 408 { 409 u_int index = cm->index; 410 u_int count = cm->count; 411 int i, error; 412 u_char rbuf[256], gbuf[256], bbuf[256]; 413 u_char *r, *g, *b; 414 415 if (cm->index >= 256 || cm->count > 256 || 416 (cm->index + cm->count) > 256) 417 return EINVAL; 418 error = copyin(cm->red, &rbuf[index], count); 419 if (error) 420 return error; 421 error = copyin(cm->green, &gbuf[index], count); 422 if (error) 423 return error; 424 error = copyin(cm->blue, &bbuf[index], count); 425 if (error) 426 return error; 427 428 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 429 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 430 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 431 432 r = &sc->sc_cmap_red[index]; 433 g = &sc->sc_cmap_green[index]; 434 b = &sc->sc_cmap_blue[index]; 435 for (i = 0; i < count; i++) 436 xafb_setcolor(sc->sc_dc, index++, *r++, *g++, *b++); 437 return 0; 438 } 439
Indexes created Thu Oct 30 03:10:01 GMT 2025