1 /* $NetBSD: xafb.c,v 1.16 2010/05/15 10:01:44 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 1.16 2010/05/15 10:01:44 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 ri->ri_flg &= ~RI_NO_AUTO; 156 sc->sc_nscreens = 1; 157 } else { 158 dc = malloc(sizeof(struct xafb_devconfig), M_DEVBUF, 159 M_WAITOK|M_ZERO); 160 dc->dc_fbpaddr = (paddr_t)0x10000000; 161 dc->dc_fbbase = (void *)MIPS_PHYS_TO_KSEG1(dc->dc_fbpaddr); 162 dc->dc_reg = (void *)(apa->apa_hwbase + 0x3000); 163 if (xafb_common_init(dc) != 0) { 164 aprint_error(": couldn't initialize device\n"); 165 return; 166 } 167 168 ri = &dc->dc_ri; 169 170 /* clear screen */ 171 (*ri->ri_ops.eraserows)(ri, 0, ri->ri_rows, 0); 172 } 173 sc->sc_dc = dc; 174 175 for (i = 0; i < 256; i++) { 176 sc->sc_cmap_red[i] = i; 177 sc->sc_cmap_green[i] = i; 178 sc->sc_cmap_blue[i] = i; 179 } 180 181 aprint_normal(": %d x %d, %dbpp\n", 182 ri->ri_width, ri->ri_height, ri->ri_depth); 183 184 wsa.console = console; 185 wsa.scrdata = &xafb_screenlist; 186 wsa.accessops = &xafb_accessops; 187 wsa.accesscookie = sc; 188 189 config_found(self, &wsa, wsemuldisplaydevprint); 190 } 191 192 void 193 xafb_setcolor(struct xafb_devconfig *dc, int index, int r, int g, int b) 194 { 195 volatile struct xafb_reg *reg = dc->dc_reg; 196 197 reg->index = index; 198 reg->zero = 0; 199 reg->rgb = r; 200 reg->rgb = g; 201 reg->rgb = b; 202 } 203 204 int 205 xafb_common_init(struct xafb_devconfig *dc) 206 { 207 struct rasops_info *ri = &dc->dc_ri; 208 int i; 209 210 for (i = 0; i < 256; i++) 211 xafb_setcolor(dc, i, i, i, i); 212 213 /* initialize rasops */ 214 ri->ri_width = 1280; 215 ri->ri_height = 1024; 216 ri->ri_depth = 8; 217 ri->ri_stride = 2048; 218 ri->ri_bits = (void *)dc->dc_fbbase; 219 ri->ri_flg = RI_FORCEMONO | RI_FULLCLEAR; 220 if (dc == &xafb_console_dc) 221 ri->ri_flg |= RI_NO_AUTO; 222 223 rasops_init(ri, 44, 100); 224 225 /* mono */ 226 ri->ri_devcmap[0] = 0; /* bg */ 227 ri->ri_devcmap[1] = 0xffffffff; /* fg */ 228 229 xafb_stdscreen.nrows = ri->ri_rows; 230 xafb_stdscreen.ncols = ri->ri_cols; 231 xafb_stdscreen.textops = &ri->ri_ops; 232 xafb_stdscreen.capabilities = ri->ri_caps; 233 234 return 0; 235 } 236 237 int 238 xafb_is_console(void) 239 { 240 volatile uint32_t *dipsw = (void *)NEWS5000_DIP_SWITCH; 241 242 if (*dipsw & 1) /* XXX right? */ 243 return 1; 244 245 return 0; 246 } 247 248 int 249 xafb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 250 { 251 struct xafb_softc *sc = v; 252 struct xafb_devconfig *dc = sc->sc_dc; 253 struct newsmips_wsdisplay_fbinfo *nwdf = (void *)data; 254 struct wsdisplay_fbinfo *wdf = (void *)data; 255 256 switch (cmd) { 257 case WSDISPLAYIO_GTYPE: 258 *(int *)data = WSDISPLAY_TYPE_UNKNOWN; /* XXX */ 259 return 0; 260 261 case NEWSMIPS_WSDISPLAYIO_GINFO: 262 nwdf->stride = dc->dc_ri.ri_stride; 263 /* FALLTHROUGH */ 264 case WSDISPLAYIO_GINFO: 265 wdf->height = dc->dc_ri.ri_height; 266 wdf->width = dc->dc_ri.ri_width; 267 wdf->depth = dc->dc_ri.ri_depth; 268 wdf->cmsize = 256; 269 return 0; 270 271 case WSDISPLAYIO_GETCMAP: 272 return xafb_getcmap(sc, (struct wsdisplay_cmap *)data); 273 274 case WSDISPLAYIO_PUTCMAP: 275 return xafb_putcmap(sc, (struct wsdisplay_cmap *)data); 276 277 /* case WSDISPLAYIO_SVIDEO: */ 278 } 279 return EPASSTHROUGH; 280 } 281 282 paddr_t 283 xafb_mmap(void *v, void *vs, off_t offset, int prot) 284 { 285 struct xafb_softc *sc = v; 286 struct xafb_devconfig *dc = sc->sc_dc; 287 struct rasops_info *ri = &dc->dc_ri; 288 289 if (offset >= (ri->ri_stride * ri->ri_height) || offset < 0) 290 return -1; 291 292 return mips_btop(dc->dc_fbpaddr + offset); 293 } 294 295 int 296 xafb_alloc_screen(void *v, const struct wsscreen_descr *scrdesc, 297 void **cookiep, int *ccolp, int *crowp, long *attrp) 298 { 299 struct xafb_softc *sc = v; 300 struct rasops_info *ri = &sc->sc_dc->dc_ri; 301 long defattr; 302 303 if (sc->sc_nscreens > 0) 304 return ENOMEM; 305 306 *cookiep = ri; 307 *ccolp = *crowp = 0; 308 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 309 *attrp = defattr; 310 sc->sc_nscreens++; 311 312 return 0; 313 } 314 315 void 316 xafb_free_screen(void *v, void *cookie) 317 { 318 struct xafb_softc *sc = v; 319 320 if (sc->sc_dc == &xafb_console_dc) 321 panic("xafb_free_screen: console"); 322 323 sc->sc_nscreens--; 324 } 325 326 int 327 xafb_show_screen(void *v, void *cookie, int waitok, 328 void (*cb)(void *, int, int), void *cbarg) 329 { 330 331 return 0; 332 } 333 334 int 335 xafb_cnattach(void) 336 { 337 struct xafb_devconfig *dc = &xafb_console_dc; 338 struct rasops_info *ri = &dc->dc_ri; 339 long defattr; 340 int crow = 0; 341 342 if (!xafb_is_console()) 343 return -1; 344 345 dc->dc_fbpaddr = (paddr_t)0x10000000; 346 dc->dc_fbbase = (void *)MIPS_PHYS_TO_KSEG1(dc->dc_fbpaddr); 347 dc->dc_reg = (void *)0xb4903000; /* XXX */ 348 xafb_common_init(dc); 349 350 crow = 0; /* XXX current cursor pos */ 351 352 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 353 wsdisplay_cnattach(&xafb_stdscreen, &dc->dc_ri, 0, crow, defattr); 354 355 return 0; 356 } 357 358 int 359 xafb_getcmap(struct xafb_softc *sc, struct wsdisplay_cmap *cm) 360 { 361 u_int index = cm->index; 362 u_int count = cm->count; 363 int error; 364 365 if (index >= 256 || count > 256 || index + count > 256) 366 return EINVAL; 367 368 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 369 if (error) 370 return error; 371 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 372 if (error) 373 return error; 374 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 375 if (error) 376 return error; 377 378 return 0; 379 } 380 381 int 382 xafb_putcmap(struct xafb_softc *sc, struct wsdisplay_cmap *cm) 383 { 384 u_int index = cm->index; 385 u_int count = cm->count; 386 int i, error; 387 u_char rbuf[256], gbuf[256], bbuf[256]; 388 u_char *r, *g, *b; 389 390 if (cm->index >= 256 || cm->count > 256 || 391 (cm->index + cm->count) > 256) 392 return EINVAL; 393 error = copyin(cm->red, &rbuf[index], count); 394 if (error) 395 return error; 396 error = copyin(cm->green, &gbuf[index], count); 397 if (error) 398 return error; 399 error = copyin(cm->blue, &bbuf[index], count); 400 if (error) 401 return error; 402 403 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 404 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 405 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 406 407 r = &sc->sc_cmap_red[index]; 408 g = &sc->sc_cmap_green[index]; 409 b = &sc->sc_cmap_blue[index]; 410 for (i = 0; i < count; i++) 411 xafb_setcolor(sc->sc_dc, index++, *r++, *g++, *b++); 412 return 0; 413 } 414