xafb.c revision 1.15
1 /* $NetBSD: xafb.c,v 1.15 2008/04/09 15:40:30 tsutsui 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 1.15 2008/04/09 15:40:30 tsutsui 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 uint32_t r0; 54 volatile uint32_t index; 55 volatile uint32_t r2; 56 volatile uint32_t zero; 57 volatile uint32_t r4; 58 volatile uint32_t r5; 59 volatile uint32_t r6; 60 volatile uint32_t rgb; 61 }; 62 63 struct xafb_devconfig { 64 uint8_t *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 device_t sc_dev; 72 struct xafb_devconfig *sc_dc; 73 int sc_nscreens; 74 uint8_t sc_cmap_red[256]; 75 uint8_t sc_cmap_green[256]; 76 uint8_t sc_cmap_blue[256]; 77 }; 78 79 int xafb_match(device_t, cfdata_t, void *); 80 void xafb_attach(device_t, device_t, 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, void *, 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_NEW(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 __arraycount(xafb_scrlist), xafb_scrlist 126 }; 127 128 int 129 xafb_match(device_t parent, cfdata_t cf, 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(device_t parent, device_t self, void *aux) 141 { 142 struct xafb_softc *sc = device_private(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 sc->sc_dev = self; 150 console = xafb_is_console(); 151 152 if (console) { 153 dc = &xafb_console_dc; 154 ri = &dc->dc_ri; 155 sc->sc_nscreens = 1; 156 } else { 157 dc = malloc(sizeof(struct xafb_devconfig), M_DEVBUF, 158 M_WAITOK|M_ZERO); 159 dc->dc_fbpaddr = (paddr_t)0x10000000; 160 dc->dc_fbbase = (void *)MIPS_PHYS_TO_KSEG1(dc->dc_fbpaddr); 161 dc->dc_reg = (void *)(apa->apa_hwbase + 0x3000); 162 if (xafb_common_init(dc) != 0) { 163 aprint_error(": couldn't initialize device\n"); 164 return; 165 } 166 167 ri = &dc->dc_ri; 168 169 /* clear screen */ 170 (*ri->ri_ops.eraserows)(ri, 0, ri->ri_rows, 0); 171 } 172 sc->sc_dc = dc; 173 174 for (i = 0; i < 256; i++) { 175 sc->sc_cmap_red[i] = i; 176 sc->sc_cmap_green[i] = i; 177 sc->sc_cmap_blue[i] = i; 178 } 179 180 aprint_normal(": %d x %d, %dbpp\n", 181 ri->ri_width, ri->ri_height, ri->ri_depth); 182 183 wsa.console = console; 184 wsa.scrdata = &xafb_screenlist; 185 wsa.accessops = &xafb_accessops; 186 wsa.accesscookie = sc; 187 188 config_found(self, &wsa, wsemuldisplaydevprint); 189 } 190 191 void 192 xafb_setcolor(struct xafb_devconfig *dc, int index, int r, int g, int b) 193 { 194 volatile struct xafb_reg *reg = dc->dc_reg; 195 196 reg->index = index; 197 reg->zero = 0; 198 reg->rgb = r; 199 reg->rgb = g; 200 reg->rgb = b; 201 } 202 203 int 204 xafb_common_init(struct xafb_devconfig *dc) 205 { 206 struct rasops_info *ri = &dc->dc_ri; 207 int i; 208 209 for (i = 0; i < 256; i++) 210 xafb_setcolor(dc, i, i, i, i); 211 212 /* initialize rasops */ 213 ri->ri_width = 1280; 214 ri->ri_height = 1024; 215 ri->ri_depth = 8; 216 ri->ri_stride = 2048; 217 ri->ri_bits = (void *)dc->dc_fbbase; 218 ri->ri_flg = RI_FORCEMONO | RI_FULLCLEAR; 219 220 rasops_init(ri, 44, 100); 221 222 /* mono */ 223 ri->ri_devcmap[0] = 0; /* bg */ 224 ri->ri_devcmap[1] = 0xffffffff; /* fg */ 225 226 xafb_stdscreen.nrows = ri->ri_rows; 227 xafb_stdscreen.ncols = ri->ri_cols; 228 xafb_stdscreen.textops = &ri->ri_ops; 229 xafb_stdscreen.capabilities = ri->ri_caps; 230 231 return 0; 232 } 233 234 int 235 xafb_is_console(void) 236 { 237 volatile uint32_t *dipsw = (void *)NEWS5000_DIP_SWITCH; 238 239 if (*dipsw & 1) /* XXX right? */ 240 return 1; 241 242 return 0; 243 } 244 245 int 246 xafb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 247 { 248 struct xafb_softc *sc = v; 249 struct xafb_devconfig *dc = sc->sc_dc; 250 struct newsmips_wsdisplay_fbinfo *nwdf = (void *)data; 251 struct wsdisplay_fbinfo *wdf = (void *)data; 252 253 switch (cmd) { 254 case WSDISPLAYIO_GTYPE: 255 *(int *)data = WSDISPLAY_TYPE_UNKNOWN; /* XXX */ 256 return 0; 257 258 case NEWSMIPS_WSDISPLAYIO_GINFO: 259 nwdf->stride = dc->dc_ri.ri_stride; 260 /* FALLTHROUGH */ 261 case WSDISPLAYIO_GINFO: 262 wdf->height = dc->dc_ri.ri_height; 263 wdf->width = dc->dc_ri.ri_width; 264 wdf->depth = dc->dc_ri.ri_depth; 265 wdf->cmsize = 256; 266 return 0; 267 268 case WSDISPLAYIO_GETCMAP: 269 return xafb_getcmap(sc, (struct wsdisplay_cmap *)data); 270 271 case WSDISPLAYIO_PUTCMAP: 272 return xafb_putcmap(sc, (struct wsdisplay_cmap *)data); 273 274 /* case WSDISPLAYIO_SVIDEO: */ 275 } 276 return EPASSTHROUGH; 277 } 278 279 paddr_t 280 xafb_mmap(void *v, void *vs, off_t offset, int prot) 281 { 282 struct xafb_softc *sc = v; 283 struct xafb_devconfig *dc = sc->sc_dc; 284 struct rasops_info *ri = &dc->dc_ri; 285 286 if (offset >= (ri->ri_stride * ri->ri_height) || offset < 0) 287 return -1; 288 289 return mips_btop(dc->dc_fbpaddr + offset); 290 } 291 292 int 293 xafb_alloc_screen(void *v, const struct wsscreen_descr *scrdesc, 294 void **cookiep, int *ccolp, int *crowp, long *attrp) 295 { 296 struct xafb_softc *sc = v; 297 struct rasops_info *ri = &sc->sc_dc->dc_ri; 298 long defattr; 299 300 if (sc->sc_nscreens > 0) 301 return ENOMEM; 302 303 *cookiep = ri; 304 *ccolp = *crowp = 0; 305 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 306 *attrp = defattr; 307 sc->sc_nscreens++; 308 309 return 0; 310 } 311 312 void 313 xafb_free_screen(void *v, void *cookie) 314 { 315 struct xafb_softc *sc = v; 316 317 if (sc->sc_dc == &xafb_console_dc) 318 panic("xafb_free_screen: console"); 319 320 sc->sc_nscreens--; 321 } 322 323 int 324 xafb_show_screen(void *v, void *cookie, int waitok, 325 void (*cb)(void *, int, int), void *cbarg) 326 { 327 328 return 0; 329 } 330 331 int 332 xafb_cnattach(void) 333 { 334 struct xafb_devconfig *dc = &xafb_console_dc; 335 struct rasops_info *ri = &dc->dc_ri; 336 long defattr; 337 int crow = 0; 338 339 if (!xafb_is_console()) 340 return -1; 341 342 dc->dc_fbpaddr = (paddr_t)0x10000000; 343 dc->dc_fbbase = (void *)MIPS_PHYS_TO_KSEG1(dc->dc_fbpaddr); 344 dc->dc_reg = (void *)0xb4903000; /* XXX */ 345 xafb_common_init(dc); 346 347 crow = 0; /* XXX current cursor pos */ 348 349 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 350 wsdisplay_cnattach(&xafb_stdscreen, &dc->dc_ri, 0, crow, defattr); 351 352 return 0; 353 } 354 355 int 356 xafb_getcmap(struct xafb_softc *sc, struct wsdisplay_cmap *cm) 357 { 358 u_int index = cm->index; 359 u_int count = cm->count; 360 int error; 361 362 if (index >= 256 || count > 256 || index + count > 256) 363 return EINVAL; 364 365 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 366 if (error) 367 return error; 368 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 369 if (error) 370 return error; 371 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 372 if (error) 373 return error; 374 375 return 0; 376 } 377 378 int 379 xafb_putcmap(struct xafb_softc *sc, struct wsdisplay_cmap *cm) 380 { 381 u_int index = cm->index; 382 u_int count = cm->count; 383 int i, error; 384 u_char rbuf[256], gbuf[256], bbuf[256]; 385 u_char *r, *g, *b; 386 387 if (cm->index >= 256 || cm->count > 256 || 388 (cm->index + cm->count) > 256) 389 return EINVAL; 390 error = copyin(cm->red, &rbuf[index], count); 391 if (error) 392 return error; 393 error = copyin(cm->green, &gbuf[index], count); 394 if (error) 395 return error; 396 error = copyin(cm->blue, &bbuf[index], count); 397 if (error) 398 return error; 399 400 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 401 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 402 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 403 404 r = &sc->sc_cmap_red[index]; 405 g = &sc->sc_cmap_green[index]; 406 b = &sc->sc_cmap_blue[index]; 407 for (i = 0; i < count; i++) 408 xafb_setcolor(sc->sc_dc, index++, *r++, *g++, *b++); 409 return 0; 410 } 411
Indexes created Sun Nov 02 07:10:05 GMT 2025