1 /* $NetBSD: fb_sbdio.c,v 1.20 2021/08/07 16:18:53 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2004, 2005 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by UCHIYAMA Yasushi. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #define WIRED_FB_TLB 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: fb_sbdio.c,v 1.20 2021/08/07 16:18:53 thorpej Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/kmem.h> 40 #include <dev/cons.h> 41 42 #include <uvm/uvm_extern.h> /* pmap function to remap FB */ 43 44 #include <dev/wscons/wsconsio.h> 45 #include <dev/wscons/wsdisplayvar.h> 46 #include <dev/wsfont/wsfont.h> 47 #include <dev/rasops/rasops.h> 48 49 #include <mips/locore.h> 50 #include <mips/pte.h> 51 52 #include <machine/sbdiovar.h> 53 54 #include <machine/gareg.h> 55 #include <machine/gavar.h> 56 57 #include <machine/vmparam.h> 58 #include <machine/wired_map.h> 59 60 61 struct fb_softc { 62 device_t sc_dev; 63 struct rasops_info *sc_ri; 64 struct ga *sc_ga; 65 int sc_nscreens; 66 }; 67 68 int fb_sbdio_match(device_t, cfdata_t, void *); 69 void fb_sbdio_attach(device_t, device_t, void *); 70 71 CFATTACH_DECL_NEW(fb_sbdio, sizeof(struct fb_softc), 72 fb_sbdio_match, fb_sbdio_attach, NULL, NULL); 73 74 int _fb_ioctl(void *, void *, u_long, void *, int, struct lwp *); 75 paddr_t _fb_mmap(void *, void *, off_t, int); 76 int _fb_alloc_screen(void *, const struct wsscreen_descr *, void **, 77 int *, int *, long *); 78 void _fb_free_screen(void *, void *); 79 int _fb_show_screen(void *, void *, int, void (*)(void *, int, int), void *); 80 void _fb_pollc(void *, int); 81 void fb_common_init(struct rasops_info *, struct ga *); 82 int fb_sbdio_cnattach(uint32_t, uint32_t, int); 83 void fb_pmap_enter(paddr_t, paddr_t, vaddr_t *, vaddr_t *); 84 85 struct wsscreen_descr _fb_std_screen = { 86 "std", 0, 0, 87 0, /* textops */ 88 0, 0, 89 0 90 }; 91 92 const struct wsscreen_descr *_fb_screen_table[] = { 93 &_fb_std_screen, 94 }; 95 96 struct wsscreen_list _fb_screen_list = { 97 .nscreens = 98 sizeof(_fb_screen_table) / sizeof(_fb_screen_table[0]), 99 .screens = _fb_screen_table 100 }; 101 102 struct wsdisplay_accessops _fb_accessops = { 103 .ioctl = _fb_ioctl, 104 .mmap = _fb_mmap, 105 .alloc_screen = _fb_alloc_screen, 106 .free_screen = _fb_free_screen, 107 .show_screen = _fb_show_screen, 108 .load_font = 0, 109 .pollc = _fb_pollc 110 }; 111 112 /* console stuff */ 113 static struct rasops_info fb_console_ri; 114 static struct ga fb_console_ga; 115 static paddr_t fb_consaddr; 116 117 118 int 119 fb_sbdio_match(device_t parent, cfdata_t cf, void *aux) 120 { 121 struct sbdio_attach_args *sa = aux; 122 123 return strcmp(sa->sa_name, "fb") ? 0 : 1; 124 } 125 126 void 127 fb_sbdio_attach(device_t parent, device_t self, void *aux) 128 { 129 struct fb_softc *sc = device_private(self); 130 struct sbdio_attach_args *sa = aux; 131 struct wsemuldisplaydev_attach_args wa; 132 struct rasops_info *ri; 133 struct ga *ga; 134 vaddr_t memva, regva; 135 int console; 136 137 sc->sc_dev = self; 138 aprint_normal("\n"); 139 140 console = (sa->sa_addr1 == fb_consaddr); 141 if (console) { 142 /* already initialized in fb_cnattach() */ 143 sc->sc_ri = ri = &fb_console_ri; 144 ri->ri_flg &= ~RI_NO_AUTO; 145 sc->sc_ga = &fb_console_ga; 146 sc->sc_nscreens = 1; 147 } else { 148 ri = kmem_zalloc(sizeof(struct rasops_info), KM_SLEEP); 149 ga = kmem_zalloc(sizeof(struct ga), KM_SLEEP); 150 ga->reg_paddr = sa->sa_addr2; 151 ga->flags = sa->sa_flags; 152 fb_pmap_enter(sa->sa_addr1, sa->sa_addr2, 153 &memva, ®va); 154 ri->ri_bits = (void *)memva; 155 ga->reg_addr = regva; 156 fb_common_init(ri, ga); 157 sc->sc_ri = ri; 158 sc->sc_ga = ga; 159 } 160 161 wa.console = console; 162 wa.scrdata = &_fb_screen_list; 163 wa.accessops = &_fb_accessops; 164 wa.accesscookie = (void *)sc; 165 166 config_found(self, &wa, wsdisplaydevprint, CFARGS_NONE); 167 } 168 169 void 170 fb_common_init(struct rasops_info *ri, struct ga *ga) 171 { 172 int ga_active, cookie; 173 174 /* XXX */ 175 ga_active = 0; 176 if (ga->flags == 0x0000 || ga->flags == 0x0001) 177 ga_active = ga_init(ga); 178 179 /* 180 * TR2 IPL CLUT. 181 * 0 black 182 * 1 red 183 * 2 green 184 * 4 blue 185 * 8 yellow 186 * 16 cyan 187 * 32 magenta 188 * 64 light gray 189 * 128 dark gray 190 * 255 white 191 * other black 192 * When CLUT isn't initialized for NetBSD, use black-red pair. 193 */ 194 ri->ri_flg = RI_CENTER | RI_CLEAR; 195 if (!ga_active) 196 ri->ri_flg |= RI_FORCEMONO; 197 if (ri == &fb_console_ri) 198 ri->ri_flg |= RI_NO_AUTO; 199 200 ri->ri_depth = 8; 201 ri->ri_width = 1280; 202 ri->ri_height = 1024; 203 ri->ri_stride = 2048; 204 ri->ri_hw = (void *)ga; 205 206 wsfont_init(); 207 /* prefer 12 pixel wide font */ 208 cookie = wsfont_find(NULL, 12, 0, 0, 0, 0, WSFONT_FIND_BITMAP); 209 if (cookie <= 0) 210 cookie = wsfont_find(NULL, 0, 0, 0, 0, 0, WSFONT_FIND_BITMAP); 211 if (cookie <= 0) { 212 printf("sfb: font table is empty\n"); 213 return; 214 } 215 216 if (wsfont_lock(cookie, &ri->ri_font)) { 217 printf("fb: can't lock font\n"); 218 return; 219 } 220 ri->ri_wsfcookie = cookie; 221 222 rasops_init(ri, 34, 80); 223 224 #if 0 225 /* XXX no accelarated functions yet */ 226 ri->ri_ops.putchar = xxx_putchar; 227 ri->ri_ops.erasecols = xxx_erasecols; 228 ri->ri_ops.copyrows = xxx_copyrows; 229 ri->ri_ops.eraserows = xxx_eraserows; 230 ir->ri_do_cursor = xxx_do_cursor; 231 #endif 232 233 /* XXX shouldn't be global */ 234 _fb_std_screen.nrows = ri->ri_rows; 235 _fb_std_screen.ncols = ri->ri_cols; 236 _fb_std_screen.textops = &ri->ri_ops; 237 _fb_std_screen.capabilities = ri->ri_caps; 238 } 239 240 int 241 fb_sbdio_cnattach(uint32_t mem, uint32_t reg, int flags) 242 { 243 struct rasops_info *ri; 244 struct ga *ga; 245 vaddr_t memva, regva; 246 long defattr; 247 248 ri = &fb_console_ri; 249 ga = &fb_console_ga; 250 251 ga->reg_paddr = reg; 252 ga->flags = flags; 253 fb_pmap_enter((paddr_t)mem, (paddr_t)reg, &memva, ®va); 254 ri->ri_bits = (void *)memva; 255 ga->reg_addr = regva; 256 257 fb_common_init(ri, ga); 258 259 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 260 wsdisplay_cnattach(&_fb_std_screen, ri, 0, 0, defattr); 261 fb_consaddr = mem; 262 263 return 0; 264 } 265 266 int 267 _fb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 268 { 269 struct fb_softc *sc = v; 270 struct wsdisplay_fbinfo *fbinfo = (void *)data; 271 struct wsdisplay_cmap *cmap = (void *)data; 272 struct rasops_info *ri = sc->sc_ri; 273 struct ga *ga = sc->sc_ga; 274 int i; 275 276 switch (cmd) { 277 case WSDISPLAYIO_GTYPE: 278 *(uint32_t *)data = WSDISPLAY_TYPE_UNKNOWN; 279 return 0; 280 281 case WSDISPLAYIO_GINFO: 282 fbinfo->height = ri->ri_height; 283 fbinfo->width = ri->ri_width; 284 fbinfo->depth = ri->ri_depth; 285 fbinfo->cmsize = 256; 286 return 0; 287 288 case WSDISPLAYIO_LINEBYTES: 289 *(u_int *)data = ri->ri_stride; 290 return 0; 291 292 case WSDISPLAYIO_GETCMAP: 293 if (ri->ri_flg == RI_FORCEMONO) 294 break; 295 ga_clut_get(ga); 296 if (cmap->index >= 256 || cmap->count > 256 - cmap->index) 297 return (EINVAL); 298 for (i = 0; i < cmap->count; i++) { 299 cmap->red[i] = ga->clut[cmap->index + i][0]; 300 cmap->green[i] = ga->clut[cmap->index + i][1]; 301 cmap->blue[i] = ga->clut[cmap->index + i][2]; 302 } 303 return 0; 304 305 case WSDISPLAYIO_PUTCMAP: 306 if (ri->ri_flg == RI_FORCEMONO) 307 break; 308 if (cmap->index >= 256 || cmap->count > 256 - cmap->index) 309 return (EINVAL); 310 for (i = 0; i < cmap->count; i++) { 311 ga->clut[cmap->index + i][0] = cmap->red[i]; 312 ga->clut[cmap->index + i][1] = cmap->green[i]; 313 ga->clut[cmap->index + i][2] = cmap->blue[i]; 314 } 315 ga_clut_set(ga); 316 return 0; 317 } 318 319 return EPASSTHROUGH; 320 } 321 322 paddr_t 323 _fb_mmap(void *v, void *vs, off_t offset, int prot) 324 { 325 326 if (offset < 0 || offset >= GA_FRB_SIZE) 327 return -1; 328 329 return mips_btop(GA_FRB_ADDR + offset); 330 } 331 332 int 333 _fb_alloc_screen(void *v, const struct wsscreen_descr *type, void **cookie, 334 int *curx, int *cury, long *attr) 335 { 336 struct fb_softc *sc = v; 337 struct rasops_info *ri = sc->sc_ri; 338 long defattr; 339 340 #if 0 341 if (sc->sc_nscreens > 0) 342 return ENOMEM; 343 #endif 344 345 *cookie = ri; 346 *curx = *cury = 0; 347 ri->ri_ops.allocattr(ri, 0, 0, 0, &defattr); 348 *attr = defattr; 349 sc->sc_nscreens++; 350 351 return 0; 352 } 353 354 void 355 _fb_free_screen(void *v, void *cookie) 356 { 357 struct fb_softc *sc = v; 358 359 sc->sc_nscreens--; 360 } 361 362 int 363 _fb_show_screen(void *v, void *cookie, int waitok, 364 void (*cb)(void *, int, int), void *cbarg) 365 { 366 367 return 0; 368 } 369 370 void 371 _fb_pollc(void *v, int on) 372 { 373 374 /* no interrupt used. */ 375 } 376 377 void 378 fb_pmap_enter(paddr_t fb_paddr, paddr_t reg_paddr, 379 vaddr_t *fb_vaddr, vaddr_t *reg_vaddr) 380 { 381 #ifdef WIRED_FB_TLB /* Make wired 16MPage for frame buffer */ 382 vaddr_t va; 383 vsize_t fb_off, reg_off, pgsize; 384 385 pgsize = MIPS3_WIRED_SIZE; 386 fb_off = fb_paddr & MIPS3_WIRED_OFFMASK; 387 reg_off = reg_paddr & MIPS3_WIRED_OFFMASK; 388 fb_paddr = fb_paddr & ~MIPS3_WIRED_OFFMASK; 389 reg_paddr = reg_paddr & ~MIPS3_WIRED_OFFMASK; 390 va = GA_FRB_ADDR; 391 392 if (mips3_wired_enter_page(va, fb_paddr, pgsize) == false) { 393 printf("cannot allocate fb memory\n"); 394 return; 395 } 396 397 if (mips3_wired_enter_page(va + pgsize, reg_paddr, pgsize) == false) { 398 printf("cannot allocate fb register\n"); 399 return; 400 } 401 402 *fb_vaddr = va + fb_off; 403 *reg_vaddr = va + pgsize + reg_off; 404 #else /* WIRED_FB_TLB */ 405 paddr_t pa, epa; 406 vaddr_t va, tva; 407 408 pa = addr; 409 epa = pa + size; 410 411 va = uvm_km_alloc(kernel_map, epa - pa, 0, UVM_KMF_VAONLY); 412 if (va == 0) 413 for (;;) 414 ROM_MONITOR(); 415 416 for (tva = va; pa < epa; pa += PAGE_SIZE, tva += PAGE_SIZE) 417 pmap_kenter_pa(tva, pa, VM_PROT_READ | VM_PROT_WRITE, 0); 418 419 pmap_update(pmap_kernel()); 420 421 *fb_vaddr = va; 422 #endif /* WIRED_FB_TLB */ 423 } 424
Indexes created Mon Sep 29 13:09:55 GMT 2025