grf_compat.c revision 1.7.2.2
1 /* $NetBSD: grf_compat.c,v 1.7.2.2 2002/10/10 18:33:46 jdolecek Exp $ */ 2 3 /* 4 * Copyright (C) 1999 Scott Reynolds 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 /* 31 * macfb compatibility with legacy grf devices 32 */ 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/cdefs.h> 37 #include <sys/conf.h> 38 #include <sys/device.h> 39 #include <sys/errno.h> 40 #include <sys/ioctl.h> 41 #include <sys/malloc.h> 42 #include <sys/mman.h> 43 #include <sys/proc.h> 44 #include <sys/resourcevar.h> 45 #include <sys/vnode.h> 46 47 #include <machine/autoconf.h> 48 #include <machine/bus.h> 49 #include <machine/grfioctl.h> 50 51 #include <mac68k/nubus/nubus.h> 52 #include <mac68k/dev/grfvar.h> 53 #include <mac68k/dev/macfbvar.h> 54 55 #include <miscfs/specfs/specdev.h> 56 57 #include <uvm/uvm_extern.h> 58 #include <uvm/uvm_map.h> 59 60 dev_type_open(grfopen); 61 dev_type_close(grfclose); 62 dev_type_ioctl(grfioctl); 63 dev_type_poll(grfpoll); 64 dev_type_mmap(grfmmap); 65 dev_type_kqfilter(grfkqfilter); 66 67 const struct cdevsw grf_cdevsw = { 68 grfopen, grfclose, noread, nowrite, grfioctl, 69 nostop, notty, grfpoll, grfmmap, grfkqfilter, 70 }; 71 72 void grf_scinit __P((struct grf_softc *, const char *, int)); 73 void grf_init __P((int)); 74 void grfattach __P((int)); 75 int grfmap __P((dev_t, struct macfb_softc *, caddr_t *, struct proc *)); 76 int grfunmap __P((dev_t, struct macfb_softc *, caddr_t, struct proc *)); 77 78 /* Non-private for the benefit of libkvm. */ 79 struct grf_softc *grf_softc; 80 int numgrf = 0; 81 82 /* 83 * Initialize a softc to sane defaults. 84 */ 85 void 86 grf_scinit(sc, name, unit) 87 struct grf_softc *sc; 88 const char *name; 89 int unit; 90 { 91 memset(sc, 0, sizeof(struct grf_softc)); 92 snprintf(sc->sc_xname, sizeof(sc->sc_xname), "%s%d", name, unit); 93 sc->mfb_sc = NULL; 94 } 95 96 /* 97 * (Re-)initialize the grf_softc block so that at least the requested 98 * number of elements has been allocated. If this results in more 99 * elements than we had prior to getting here, we initialize each of 100 * them to avoid problems down the road. 101 */ 102 void 103 grf_init(n) 104 int n; 105 { 106 struct grf_softc *sc; 107 int i; 108 109 if (n >= numgrf) { 110 i = numgrf; 111 numgrf = n + 1; 112 113 if (grf_softc == NULL) 114 sc = (struct grf_softc *) 115 malloc(numgrf * sizeof(*sc), 116 M_DEVBUF, M_NOWAIT); 117 else 118 sc = (struct grf_softc *) 119 realloc(grf_softc, numgrf * sizeof(*sc), 120 M_DEVBUF, M_NOWAIT); 121 if (sc == NULL) { 122 printf("WARNING: no memory for grf emulation\n"); 123 if (grf_softc != NULL) 124 free(grf_softc, M_DEVBUF); 125 return; 126 } 127 grf_softc = sc; 128 129 /* Initialize per-softc structures. */ 130 while (i < numgrf) { 131 grf_scinit(&grf_softc[i], "grf", i); 132 i++; 133 } 134 } 135 } 136 137 /* 138 * Called by main() during pseudo-device attachment. If we had a 139 * way to configure additional grf devices later, this would actually 140 * allocate enough space for them. As it stands, it's nonsensical, 141 * so other than a basic sanity check we do nothing. 142 */ 143 void 144 grfattach(n) 145 int n; 146 { 147 if (n <= 0) { 148 #ifdef DIAGNOSTIC 149 panic("grfattach: count <= 0"); 150 #endif 151 return; 152 } 153 154 #if 0 /* XXX someday, if we implement a way to attach after autoconfig */ 155 grf_init(n); 156 #endif 157 } 158 159 /* 160 * Called from macfb_attach() after setting up the frame buffer. Since 161 * there is a 1:1 correspondence between the macfb device and the grf 162 * device, the only bit of information we really need is the macfb_softc. 163 */ 164 void 165 grf_attach(sc, unit) 166 struct macfb_softc *sc; 167 int unit; 168 { 169 grf_init(unit); 170 171 if (unit < numgrf) 172 grf_softc[unit].mfb_sc = sc; 173 } 174 175 /* 176 * Standard device ops 177 */ 178 int 179 grfopen(dev, flag, mode, p) 180 dev_t dev; 181 int flag; 182 int mode; 183 struct proc *p; 184 { 185 struct grf_softc *sc; 186 int unit = GRFUNIT(dev); 187 int rv = 0; 188 189 if (grf_softc == NULL || unit >= numgrf) 190 return ENXIO; 191 192 sc = &grf_softc[unit]; 193 if (sc->mfb_sc == NULL) 194 rv = ENXIO; 195 196 return rv; 197 } 198 199 int 200 grfclose(dev, flag, mode, p) 201 dev_t dev; 202 int flag; 203 int mode; 204 struct proc *p; 205 { 206 struct grf_softc *sc; 207 int unit = GRFUNIT(dev); 208 int rv = 0; 209 210 if (grf_softc == NULL || unit >= numgrf) 211 return ENXIO; 212 213 sc = &grf_softc[unit]; 214 if (sc->mfb_sc != NULL) 215 macfb_clear(sc->mfb_sc->sc_dc); /* clear the display */ 216 else 217 rv = ENXIO; 218 219 return rv; 220 } 221 222 int 223 grfioctl(dev, cmd, data, flag, p) 224 dev_t dev; 225 u_long cmd; 226 caddr_t data; 227 int flag; 228 struct proc *p; 229 { 230 struct grf_softc *sc; 231 struct macfb_devconfig *dc; 232 #if defined(GRF_COMPAT) || (NGRF > 0) 233 struct grfinfo *gd; 234 #endif /* GRF_COMPAT || (NGRF > 0) */ 235 struct grfmode *gm; 236 int unit = GRFUNIT(dev); 237 int rv; 238 239 if (grf_softc == NULL || unit >= numgrf) 240 return ENXIO; 241 242 sc = &grf_softc[unit]; 243 if (sc->mfb_sc == NULL) 244 return ENXIO; 245 246 dc = sc->mfb_sc->sc_dc; 247 248 switch (cmd) { 249 #if defined(GRF_COMPAT) || (NGRF > 0) 250 case GRFIOCGINFO: 251 gd = (struct grfinfo *)data; 252 memset(gd, 0, sizeof(struct grfinfo)); 253 gd->gd_fbaddr = (caddr_t)dc->dc_paddr; 254 gd->gd_fbsize = dc->dc_size; 255 gd->gd_colors = (short)(1 << dc->dc_depth); 256 gd->gd_planes = (short)dc->dc_depth; 257 gd->gd_fbwidth = dc->dc_wid; 258 gd->gd_fbheight = dc->dc_ht; 259 gd->gd_fbrowbytes = dc->dc_rowbytes; 260 gd->gd_dwidth = dc->dc_raster.width; 261 gd->gd_dheight = dc->dc_raster.height; 262 rv = 0; 263 break; 264 #endif /* GRF_COMPAT || (NGRF > 0) */ 265 266 case GRFIOCON: 267 case GRFIOCOFF: 268 /* Nothing to do */ 269 rv = 0; 270 break; 271 272 #if defined(GRF_COMPAT) || (NGRF > 0) 273 case GRFIOCMAP: 274 rv = grfmap(dev, sc->mfb_sc, (caddr_t *)data, p); 275 break; 276 277 case GRFIOCUNMAP: 278 rv = grfunmap(dev, sc->mfb_sc, *(caddr_t *)data, p); 279 break; 280 #endif /* GRF_COMPAT || (NGRF > 0) */ 281 282 case GRFIOCGMODE: 283 gm = (struct grfmode *)data; 284 memset(gm, 0, sizeof(struct grfmode)); 285 gm->fbbase = (char *)dc->dc_vaddr; 286 gm->fbsize = dc->dc_size; 287 gm->fboff = dc->dc_offset; 288 gm->rowbytes = dc->dc_rowbytes; 289 gm->width = dc->dc_wid; 290 gm->height = dc->dc_ht; 291 gm->psize = dc->dc_depth; 292 rv = 0; 293 break; 294 295 case GRFIOCLISTMODES: 296 case GRFIOCGETMODE: 297 case GRFIOCSETMODE: 298 /* NONE of these operations are (officially) supported. */ 299 default: 300 rv = EINVAL; 301 break; 302 } 303 return rv; 304 } 305 306 int 307 grfpoll(dev, events, p) 308 dev_t dev; 309 int events; 310 struct proc *p; 311 { 312 return EINVAL; 313 } 314 315 int 316 grfkqfilter(dev_t dev, struct knote *kn) 317 { 318 319 /* XXXLUKEM (thorpej): not supported -- why is poll? */ 320 return (1); 321 } 322 323 paddr_t 324 grfmmap(dev, off, prot) 325 dev_t dev; 326 off_t off; 327 int prot; 328 { 329 struct grf_softc *sc; 330 struct macfb_devconfig *dc; 331 paddr_t addr; 332 int unit = GRFUNIT(dev); 333 334 if (grf_softc == NULL || unit >= numgrf) 335 return ENXIO; 336 337 sc = &grf_softc[unit]; 338 if (sc->mfb_sc == NULL) 339 return ENXIO; 340 341 dc = sc->mfb_sc->sc_dc; 342 343 if (off >= 0 && 344 off < m68k_round_page(dc->dc_offset + dc->dc_size)) 345 addr = m68k_btop(dc->dc_paddr + off); 346 else 347 addr = (-1); /* XXX bogus */ 348 349 return addr; 350 } 351 352 int 353 grfmap(dev, sc, addrp, p) 354 dev_t dev; 355 struct macfb_softc *sc; 356 caddr_t *addrp; 357 struct proc *p; 358 { 359 struct specinfo si; 360 struct vnode vn; 361 u_long len; 362 int error, flags; 363 364 *addrp = (caddr_t)sc->sc_dc->dc_paddr; 365 len = m68k_round_page(sc->sc_dc->dc_offset + sc->sc_dc->dc_size); 366 flags = MAP_SHARED | MAP_FIXED; 367 368 vn.v_type = VCHR; /* XXX */ 369 vn.v_specinfo = &si; /* XXX */ 370 vn.v_rdev = dev; /* XXX */ 371 372 error = uvm_mmap(&p->p_vmspace->vm_map, (vaddr_t *)addrp, 373 (vsize_t)len, VM_PROT_ALL, VM_PROT_ALL, 374 flags, (caddr_t)&vn, 0, p->p_rlimit[RLIMIT_MEMLOCK].rlim_cur); 375 376 /* Offset into page: */ 377 *addrp += sc->sc_dc->dc_offset; 378 379 return (error); 380 } 381 382 int 383 grfunmap(dev, sc, addr, p) 384 dev_t dev; 385 struct macfb_softc *sc; 386 caddr_t addr; 387 struct proc *p; 388 { 389 vm_size_t size; 390 391 addr -= sc->sc_dc->dc_offset; 392 393 if (addr <= 0) 394 return (-1); 395 396 size = m68k_round_page(sc->sc_dc->dc_offset + sc->sc_dc->dc_size); 397 uvm_unmap(&p->p_vmspace->vm_map, (vaddr_t)addr, (vaddr_t)addr + size); 398 return 0; 399 } 400
Indexes created Thu Oct 02 14:10:14 GMT 2025