xafb.c revision 1.12.4.1
1 /* $NetBSD: xafb.c,v 1.12.4.1 2006/09/09 02:41:48 rpaulo 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 1.12.4.1 2006/09/09 02:41:48 rpaulo 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 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(struct device *, struct cfdata *, void *); 80 void xafb_attach(struct device *, struct device *, void *); 81 82 int xafb_common_init(struct xafb_devconfig *); 83 int xafb_is_console(void); 84 85 int xafb_ioctl(void *, void *, u_long, caddr_t, int, struct lwp *); 86 paddr_t xafb_mmap(void *, void *, off_t, int); 87 int xafb_alloc_screen(void *, const struct wsscreen_descr *, void **, int *, 88 int *, long *); 89 void xafb_free_screen(void *, void *); 90 int xafb_show_screen(void *, void *, int, void (*) (void *, int, int), void *); 91 92 int xafb_cnattach(void); 93 int xafb_getcmap(struct xafb_softc *, struct wsdisplay_cmap *); 94 int xafb_putcmap(struct xafb_softc *, struct wsdisplay_cmap *); 95 96 static inline void xafb_setcolor(struct xafb_devconfig *, int, int, int, int); 97 98 CFATTACH_DECL(xafb, sizeof(struct xafb_softc), 99 xafb_match, xafb_attach, NULL, NULL); 100 101 struct xafb_devconfig xafb_console_dc; 102 103 struct wsdisplay_accessops xafb_accessops = { 104 xafb_ioctl, 105 xafb_mmap, 106 xafb_alloc_screen, 107 xafb_free_screen, 108 xafb_show_screen, 109 NULL /* load_font */ 110 }; 111 112 struct wsscreen_descr xafb_stdscreen = { 113 "std", 114 0, 0, 115 0, 116 0, 0, 117 WSSCREEN_REVERSE 118 }; 119 120 const struct wsscreen_descr *xafb_scrlist[] = { 121 &xafb_stdscreen 122 }; 123 124 struct wsscreen_list xafb_screenlist = { 125 sizeof(xafb_scrlist) / sizeof(xafb_scrlist[0]), xafb_scrlist 126 }; 127 128 int 129 xafb_match(struct device *parent, struct cfdata *match, void *aux) 130 { 131 struct apbus_attach_args *apa = aux; 132 133 if (strcmp(apa->apa_name, "xa") != 0) 134 return 0; 135 136 return 1; 137 } 138 139 void 140 xafb_attach(struct device *parent, struct device *self, void *aux) 141 { 142 struct xafb_softc *sc = (void *)self; 143 struct apbus_attach_args *apa = aux; 144 struct wsemuldisplaydev_attach_args wsa; 145 struct xafb_devconfig *dc; 146 struct rasops_info *ri; 147 int console, i; 148 149 console = xafb_is_console(); 150 151 if (console) { 152 dc = &xafb_console_dc; 153 ri = &dc->dc_ri; 154 sc->sc_nscreens = 1; 155 } else { 156 dc = malloc(sizeof(struct xafb_devconfig), M_DEVBUF, 157 M_WAITOK|M_ZERO); 158 dc->dc_fbpaddr = (paddr_t)0x10000000; 159 dc->dc_fbbase = (void *)MIPS_PHYS_TO_KSEG1(dc->dc_fbpaddr); 160 dc->dc_reg = (void *)(apa->apa_hwbase + 0x3000); 161 if (xafb_common_init(dc) != 0) { 162 printf(": couldn't initialize device\n"); 163 return; 164 } 165 166 ri = &dc->dc_ri; 167 168 /* clear screen */ 169 (*ri->ri_ops.eraserows)(ri, 0, ri->ri_rows, 0); 170 } 171 sc->sc_dc = dc; 172 173 for (i = 0; i < 256; i++) { 174 sc->sc_cmap_red[i] = i; 175 sc->sc_cmap_green[i] = i; 176 sc->sc_cmap_blue[i] = i; 177 } 178 179 printf(": %d x %d, %dbpp\n", ri->ri_width, ri->ri_height, ri->ri_depth); 180 181 wsa.console = console; 182 wsa.scrdata = &xafb_screenlist; 183 wsa.accessops = &xafb_accessops; 184 wsa.accesscookie = sc; 185 186 config_found(self, &wsa, wsemuldisplaydevprint); 187 } 188 189 void 190 xafb_setcolor(struct xafb_devconfig *dc, int index, int r, int g, int b) 191 { 192 volatile struct xafb_reg *reg = dc->dc_reg; 193 194 reg->index = index; 195 reg->zero = 0; 196 reg->rgb = r; 197 reg->rgb = g; 198 reg->rgb = b; 199 } 200 201 int 202 xafb_common_init(struct xafb_devconfig *dc) 203 { 204 struct rasops_info *ri = &dc->dc_ri; 205 int i; 206 207 for (i = 0; i < 256; i++) 208 xafb_setcolor(dc, i, i, i, i); 209 210 /* initialize rasops */ 211 ri->ri_width = 1280; 212 ri->ri_height = 1024; 213 ri->ri_depth = 8; 214 ri->ri_stride = 2048; 215 ri->ri_bits = (void *)dc->dc_fbbase; 216 ri->ri_flg = RI_FORCEMONO | RI_FULLCLEAR; 217 218 rasops_init(ri, 44, 100); 219 220 /* mono */ 221 ri->ri_devcmap[0] = 0; /* bg */ 222 ri->ri_devcmap[1] = 0xffffffff; /* fg */ 223 224 xafb_stdscreen.nrows = ri->ri_rows; 225 xafb_stdscreen.ncols = ri->ri_cols; 226 xafb_stdscreen.textops = &ri->ri_ops; 227 xafb_stdscreen.capabilities = ri->ri_caps; 228 229 return 0; 230 } 231 232 int 233 xafb_is_console(void) 234 { 235 volatile u_int *dipsw = (void *)NEWS5000_DIP_SWITCH; 236 237 if (*dipsw & 1) /* XXX right? */ 238 return 1; 239 240 return 0; 241 } 242 243 int 244 xafb_ioctl(void *v, void *vs, u_long cmd, caddr_t data, int flag, struct lwp *l) 245 { 246 struct xafb_softc *sc = v; 247 struct xafb_devconfig *dc = sc->sc_dc; 248 struct newsmips_wsdisplay_fbinfo *nwdf = (void *)data; 249 struct wsdisplay_fbinfo *wdf = (void *)data; 250 251 switch (cmd) { 252 case WSDISPLAYIO_GTYPE: 253 *(int *)data = WSDISPLAY_TYPE_UNKNOWN; /* XXX */ 254 return 0; 255 256 case NEWSMIPS_WSDISPLAYIO_GINFO: 257 nwdf->stride = dc->dc_ri.ri_stride; 258 /* FALLTHROUGH */ 259 case WSDISPLAYIO_GINFO: 260 wdf->height = dc->dc_ri.ri_height; 261 wdf->width = dc->dc_ri.ri_width; 262 wdf->depth = dc->dc_ri.ri_depth; 263 wdf->cmsize = 256; 264 return 0; 265 266 case WSDISPLAYIO_GETCMAP: 267 return xafb_getcmap(sc, (struct wsdisplay_cmap *)data); 268 269 case WSDISPLAYIO_PUTCMAP: 270 return xafb_putcmap(sc, (struct wsdisplay_cmap *)data); 271 272 /* case WSDISPLAYIO_SVIDEO: */ 273 } 274 return EPASSTHROUGH; 275 } 276 277 paddr_t 278 xafb_mmap(void *v, void *vs, off_t offset, int prot) 279 { 280 struct xafb_softc *sc = v; 281 struct xafb_devconfig *dc = sc->sc_dc; 282 struct rasops_info *ri = &dc->dc_ri; 283 284 if (offset >= (ri->ri_stride * ri->ri_height) || offset < 0) 285 return -1; 286 287 return mips_btop(dc->dc_fbpaddr + offset); 288 } 289 290 int 291 xafb_alloc_screen(void *v, const struct wsscreen_descr *scrdesc, 292 void **cookiep, int *ccolp, int *crowp, long *attrp) 293 { 294 struct xafb_softc *sc = v; 295 struct rasops_info *ri = &sc->sc_dc->dc_ri; 296 long defattr; 297 298 if (sc->sc_nscreens > 0) 299 return ENOMEM; 300 301 *cookiep = ri; 302 *ccolp = *crowp = 0; 303 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 304 *attrp = defattr; 305 sc->sc_nscreens++; 306 307 return 0; 308 } 309 310 void 311 xafb_free_screen(void *v, void *cookie) 312 { 313 struct xafb_softc *sc = v; 314 315 if (sc->sc_dc == &xafb_console_dc) 316 panic("xafb_free_screen: console"); 317 318 sc->sc_nscreens--; 319 } 320 321 int 322 xafb_show_screen(void *v, void *cookie, int waitok, 323 void (*cb)(void *, int, int), void *cbarg) 324 { 325 326 return 0; 327 } 328 329 int 330 xafb_cnattach(void) 331 { 332 struct xafb_devconfig *dc = &xafb_console_dc; 333 struct rasops_info *ri = &dc->dc_ri; 334 long defattr; 335 int crow = 0; 336 337 if (!xafb_is_console()) 338 return -1; 339 340 dc->dc_fbpaddr = (paddr_t)0x10000000; 341 dc->dc_fbbase = (void *)MIPS_PHYS_TO_KSEG1(dc->dc_fbpaddr); 342 dc->dc_reg = (void *)0xb4903000; /* XXX */ 343 xafb_common_init(dc); 344 345 crow = 0; /* XXX current cursor pos */ 346 347 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 348 wsdisplay_cnattach(&xafb_stdscreen, &dc->dc_ri, 0, crow, defattr); 349 350 return 0; 351 } 352 353 int 354 xafb_getcmap(struct xafb_softc *sc, struct wsdisplay_cmap *cm) 355 { 356 u_int index = cm->index; 357 u_int count = cm->count; 358 int error; 359 360 if (index >= 256 || count > 256 || index + count > 256) 361 return EINVAL; 362 363 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 364 if (error) 365 return error; 366 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 367 if (error) 368 return error; 369 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 370 if (error) 371 return error; 372 373 return 0; 374 } 375 376 int 377 xafb_putcmap(struct xafb_softc *sc, struct wsdisplay_cmap *cm) 378 { 379 u_int index = cm->index; 380 u_int count = cm->count; 381 int i, error; 382 u_char rbuf[256], gbuf[256], bbuf[256]; 383 u_char *r, *g, *b; 384 385 if (cm->index >= 256 || cm->count > 256 || 386 (cm->index + cm->count) > 256) 387 return EINVAL; 388 error = copyin(cm->red, &rbuf[index], count); 389 if (error) 390 return error; 391 error = copyin(cm->green, &gbuf[index], count); 392 if (error) 393 return error; 394 error = copyin(cm->blue, &bbuf[index], count); 395 if (error) 396 return error; 397 398 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 399 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 400 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 401 402 r = &sc->sc_cmap_red[index]; 403 g = &sc->sc_cmap_green[index]; 404 b = &sc->sc_cmap_blue[index]; 405 for (i = 0; i < count; i++) 406 xafb_setcolor(sc->sc_dc, index++, *r++, *g++, *b++); 407 return 0; 408 } 409
Indexes created Mon Oct 27 20:09:55 GMT 2025