1 /* $NetBSD: xafb.c,v 1.21 2021/08/07 16:19:01 thorpej 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 1.21 2021/08/07 16:19:01 thorpej 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/kmem.h> 39 #include <sys/systm.h> 40 41 #include <uvm/uvm_extern.h> 42 43 #include <mips/locore.h> 44 45 #include <machine/adrsmap.h> 46 #include <machine/apcall.h> 47 #include <machine/wsconsio.h> 48 49 #include <dev/wscons/wsdisplayvar.h> 50 #include <dev/rasops/rasops.h> 51 52 #include <newsmips/apbus/apbusvar.h> 53 54 struct xafb_reg { 55 volatile uint32_t r0; 56 volatile uint32_t index; 57 volatile uint32_t r2; 58 volatile uint32_t zero; 59 volatile uint32_t r4; 60 volatile uint32_t r5; 61 volatile uint32_t r6; 62 volatile uint32_t rgb; 63 }; 64 65 struct xafb_devconfig { 66 uint8_t *dc_fbbase; /* VRAM base address */ 67 paddr_t dc_fbpaddr; /* VRAM physical address */ 68 struct xafb_reg *dc_reg; /* register address */ 69 struct rasops_info dc_ri; 70 }; 71 72 struct xafb_softc { 73 device_t sc_dev; 74 struct xafb_devconfig *sc_dc; 75 int sc_nscreens; 76 uint8_t sc_cmap_red[256]; 77 uint8_t sc_cmap_green[256]; 78 uint8_t sc_cmap_blue[256]; 79 }; 80 81 int xafb_match(device_t, cfdata_t, void *); 82 void xafb_attach(device_t, device_t, void *); 83 84 int xafb_common_init(struct xafb_devconfig *); 85 int xafb_is_console(void); 86 87 int xafb_ioctl(void *, void *, u_long, void *, int, struct lwp *); 88 paddr_t xafb_mmap(void *, void *, off_t, int); 89 int xafb_alloc_screen(void *, const struct wsscreen_descr *, void **, int *, 90 int *, long *); 91 void xafb_free_screen(void *, void *); 92 int xafb_show_screen(void *, void *, int, void (*) (void *, int, int), void *); 93 94 int xafb_cnattach(void); 95 int xafb_getcmap(struct xafb_softc *, struct wsdisplay_cmap *); 96 int xafb_putcmap(struct xafb_softc *, struct wsdisplay_cmap *); 97 98 static inline void xafb_setcolor(struct xafb_devconfig *, int, int, int, int); 99 100 CFATTACH_DECL_NEW(xafb, sizeof(struct xafb_softc), 101 xafb_match, xafb_attach, NULL, NULL); 102 103 struct xafb_devconfig xafb_console_dc; 104 105 struct wsdisplay_accessops xafb_accessops = { 106 xafb_ioctl, 107 xafb_mmap, 108 xafb_alloc_screen, 109 xafb_free_screen, 110 xafb_show_screen, 111 NULL /* load_font */ 112 }; 113 114 struct wsscreen_descr xafb_stdscreen = { 115 "std", 116 0, 0, 117 0, 118 0, 0, 119 WSSCREEN_REVERSE 120 }; 121 122 const struct wsscreen_descr *xafb_scrlist[] = { 123 &xafb_stdscreen 124 }; 125 126 struct wsscreen_list xafb_screenlist = { 127 __arraycount(xafb_scrlist), xafb_scrlist 128 }; 129 130 int 131 xafb_match(device_t parent, cfdata_t cf, void *aux) 132 { 133 struct apbus_attach_args *apa = aux; 134 135 if (strcmp(apa->apa_name, "xa") != 0) 136 return 0; 137 138 return 1; 139 } 140 141 void 142 xafb_attach(device_t parent, device_t self, void *aux) 143 { 144 struct xafb_softc *sc = device_private(self); 145 struct apbus_attach_args *apa = aux; 146 struct wsemuldisplaydev_attach_args wsa; 147 struct xafb_devconfig *dc; 148 struct rasops_info *ri; 149 int console, i; 150 151 sc->sc_dev = self; 152 console = xafb_is_console(); 153 154 if (console) { 155 dc = &xafb_console_dc; 156 ri = &dc->dc_ri; 157 ri->ri_flg &= ~RI_NO_AUTO; 158 sc->sc_nscreens = 1; 159 } else { 160 dc = kmem_zalloc(sizeof(struct xafb_devconfig), KM_SLEEP); 161 dc->dc_fbpaddr = (paddr_t)0x10000000; 162 dc->dc_fbbase = (void *)MIPS_PHYS_TO_KSEG1(dc->dc_fbpaddr); 163 dc->dc_reg = (void *)(apa->apa_hwbase + 0x3000); 164 if (xafb_common_init(dc) != 0) { 165 aprint_error(": couldn't initialize device\n"); 166 return; 167 } 168 169 ri = &dc->dc_ri; 170 171 /* clear screen */ 172 (*ri->ri_ops.eraserows)(ri, 0, ri->ri_rows, 0); 173 } 174 sc->sc_dc = dc; 175 176 for (i = 0; i < 256; i++) { 177 sc->sc_cmap_red[i] = i; 178 sc->sc_cmap_green[i] = i; 179 sc->sc_cmap_blue[i] = i; 180 } 181 182 aprint_normal(": %d x %d, %dbpp\n", 183 ri->ri_width, ri->ri_height, ri->ri_depth); 184 185 wsa.console = console; 186 wsa.scrdata = &xafb_screenlist; 187 wsa.accessops = &xafb_accessops; 188 wsa.accesscookie = sc; 189 190 config_found(self, &wsa, wsemuldisplaydevprint, CFARGS_NONE); 191 } 192 193 void 194 xafb_setcolor(struct xafb_devconfig *dc, int index, int r, int g, int b) 195 { 196 volatile struct xafb_reg *reg = dc->dc_reg; 197 198 reg->index = index; 199 reg->zero = 0; 200 reg->rgb = r; 201 reg->rgb = g; 202 reg->rgb = b; 203 } 204 205 int 206 xafb_common_init(struct xafb_devconfig *dc) 207 { 208 struct rasops_info *ri = &dc->dc_ri; 209 int i; 210 211 for (i = 0; i < 256; i++) 212 xafb_setcolor(dc, i, i, i, i); 213 214 /* initialize rasops */ 215 ri->ri_width = 1280; 216 ri->ri_height = 1024; 217 ri->ri_depth = 8; 218 ri->ri_stride = 2048; 219 ri->ri_bits = (void *)dc->dc_fbbase; 220 ri->ri_flg = RI_FORCEMONO | RI_FULLCLEAR; 221 if (dc == &xafb_console_dc) 222 ri->ri_flg |= RI_NO_AUTO; 223 224 rasops_init(ri, 44, 100); 225 226 /* mono */ 227 ri->ri_devcmap[0] = 0; /* bg */ 228 ri->ri_devcmap[1] = 0xffffffff; /* fg */ 229 230 xafb_stdscreen.nrows = ri->ri_rows; 231 xafb_stdscreen.ncols = ri->ri_cols; 232 xafb_stdscreen.textops = &ri->ri_ops; 233 xafb_stdscreen.capabilities = ri->ri_caps; 234 235 return 0; 236 } 237 238 int 239 xafb_is_console(void) 240 { 241 volatile uint32_t *dipsw = (void *)NEWS5000_DIP_SWITCH; 242 243 if (*dipsw & 1) /* XXX right? */ 244 return 1; 245 246 return 0; 247 } 248 249 int 250 xafb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 251 { 252 struct xafb_softc *sc = v; 253 struct xafb_devconfig *dc = sc->sc_dc; 254 struct newsmips_wsdisplay_fbinfo *nwdf = (void *)data; 255 struct wsdisplay_fbinfo *wdf = (void *)data; 256 257 switch (cmd) { 258 case WSDISPLAYIO_GTYPE: 259 *(int *)data = WSDISPLAY_TYPE_UNKNOWN; /* XXX */ 260 return 0; 261 262 case NEWSMIPS_WSDISPLAYIO_GINFO: 263 nwdf->stride = dc->dc_ri.ri_stride; 264 /* FALLTHROUGH */ 265 case WSDISPLAYIO_GINFO: 266 wdf->height = dc->dc_ri.ri_height; 267 wdf->width = dc->dc_ri.ri_width; 268 wdf->depth = dc->dc_ri.ri_depth; 269 wdf->cmsize = 256; 270 return 0; 271 272 case WSDISPLAYIO_LINEBYTES: 273 *(u_int *)data = dc->dc_ri.ri_stride; 274 return 0; 275 276 case WSDISPLAYIO_GETCMAP: 277 return xafb_getcmap(sc, (struct wsdisplay_cmap *)data); 278 279 case WSDISPLAYIO_PUTCMAP: 280 return xafb_putcmap(sc, (struct wsdisplay_cmap *)data); 281 282 /* case WSDISPLAYIO_SVIDEO: */ 283 } 284 return EPASSTHROUGH; 285 } 286 287 paddr_t 288 xafb_mmap(void *v, void *vs, off_t offset, int prot) 289 { 290 struct xafb_softc *sc = v; 291 struct xafb_devconfig *dc = sc->sc_dc; 292 struct rasops_info *ri = &dc->dc_ri; 293 294 if (offset >= (ri->ri_stride * ri->ri_height) || offset < 0) 295 return -1; 296 297 return mips_btop(dc->dc_fbpaddr + offset); 298 } 299 300 int 301 xafb_alloc_screen(void *v, const struct wsscreen_descr *scrdesc, 302 void **cookiep, int *ccolp, int *crowp, long *attrp) 303 { 304 struct xafb_softc *sc = v; 305 struct rasops_info *ri = &sc->sc_dc->dc_ri; 306 long defattr; 307 308 if (sc->sc_nscreens > 0) 309 return ENOMEM; 310 311 *cookiep = ri; 312 *ccolp = *crowp = 0; 313 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 314 *attrp = defattr; 315 sc->sc_nscreens++; 316 317 return 0; 318 } 319 320 void 321 xafb_free_screen(void *v, void *cookie) 322 { 323 struct xafb_softc *sc = v; 324 325 if (sc->sc_dc == &xafb_console_dc) 326 panic("xafb_free_screen: console"); 327 328 sc->sc_nscreens--; 329 } 330 331 int 332 xafb_show_screen(void *v, void *cookie, int waitok, 333 void (*cb)(void *, int, int), void *cbarg) 334 { 335 336 return 0; 337 } 338 339 int 340 xafb_cnattach(void) 341 { 342 struct xafb_devconfig *dc = &xafb_console_dc; 343 struct rasops_info *ri = &dc->dc_ri; 344 long defattr; 345 int crow = 0; 346 347 if (!xafb_is_console()) 348 return -1; 349 350 dc->dc_fbpaddr = (paddr_t)0x10000000; 351 dc->dc_fbbase = (void *)MIPS_PHYS_TO_KSEG1(dc->dc_fbpaddr); 352 dc->dc_reg = (void *)0xb4903000; /* XXX */ 353 xafb_common_init(dc); 354 355 crow = 0; /* XXX current cursor pos */ 356 357 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 358 wsdisplay_cnattach(&xafb_stdscreen, &dc->dc_ri, 0, crow, defattr); 359 360 return 0; 361 } 362 363 int 364 xafb_getcmap(struct xafb_softc *sc, struct wsdisplay_cmap *cm) 365 { 366 u_int index = cm->index; 367 u_int count = cm->count; 368 int error; 369 370 if (index >= 256 || count > 256 || index + count > 256) 371 return EINVAL; 372 373 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 374 if (error) 375 return error; 376 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 377 if (error) 378 return error; 379 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 380 if (error) 381 return error; 382 383 return 0; 384 } 385 386 int 387 xafb_putcmap(struct xafb_softc *sc, struct wsdisplay_cmap *cm) 388 { 389 u_int index = cm->index; 390 u_int count = cm->count; 391 int i, error; 392 u_char rbuf[256], gbuf[256], bbuf[256]; 393 u_char *r, *g, *b; 394 395 if (cm->index >= 256 || cm->count > 256 || 396 (cm->index + cm->count) > 256) 397 return EINVAL; 398 error = copyin(cm->red, &rbuf[index], count); 399 if (error) 400 return error; 401 error = copyin(cm->green, &gbuf[index], count); 402 if (error) 403 return error; 404 error = copyin(cm->blue, &bbuf[index], count); 405 if (error) 406 return error; 407 408 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 409 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 410 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 411 412 r = &sc->sc_cmap_red[index]; 413 g = &sc->sc_cmap_green[index]; 414 b = &sc->sc_cmap_blue[index]; 415 for (i = 0; i < count; i++) 416 xafb_setcolor(sc->sc_dc, index++, *r++, *g++, *b++); 417 return 0; 418 } 419
Indexes created Mon Oct 27 20:09:55 GMT 2025