1 /* $OpenBSD: simplefb.c,v 1.11 2020/05/28 20:24:26 fcambus Exp $ */ 2 /* 3 * Copyright (c) 2016 Mark Kettenis 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #include <sys/param.h> 19 #include <sys/systm.h> 20 #include <sys/device.h> 21 22 #include <uvm/uvm_extern.h> 23 24 #include <machine/bus.h> 25 #include <machine/fdt.h> 26 27 #include <dev/ofw/openfirm.h> 28 #include <dev/ofw/fdt.h> 29 30 #include <dev/wscons/wsconsio.h> 31 #include <dev/wscons/wsdisplayvar.h> 32 #include <dev/rasops/rasops.h> 33 34 #define SIMPLEFB_WIDTH 160 35 #define SIMPLEFB_HEIGHT 50 36 37 struct simplefb_format { 38 const char *format; 39 int depth; 40 int rpos, rnum; 41 int gpos, gnum; 42 int bpos, bnum; 43 }; 44 45 /* 46 * Supported pixel formats. Layout ommitted when it matches the 47 * rasops defaults. 48 */ 49 struct simplefb_format simplefb_formats[] = { 50 { "r5g6b5", 16 }, 51 { "x1r5g5b5", 15 }, 52 { "a1r5g5b5", 15 }, 53 { "r8g8b8", 24 }, 54 { "x8r8g8b8", 32, 16, 8, 8, 8, 0, 8 }, 55 { "a8r8g8b8", 32, 16, 8, 8, 8, 0, 8 }, 56 { "x8b8g8r8", 32 }, 57 { "a8b8g8r8", 32 } 58 }; 59 60 struct simplefb_softc { 61 struct device sc_dev; 62 bus_space_tag_t sc_iot; 63 bus_space_handle_t sc_ioh; 64 65 struct rasops_info sc_ri; 66 struct wsscreen_descr sc_wsd; 67 struct wsscreen_list sc_wsl; 68 struct wsscreen_descr *sc_scrlist[1]; 69 70 struct simplefb_format *sc_format; 71 paddr_t sc_paddr; 72 psize_t sc_psize; 73 }; 74 75 struct rasops_info simplefb_ri; 76 struct wsscreen_descr simplefb_wsd = { "std" }; 77 struct wsdisplay_charcell simplefb_bs[SIMPLEFB_WIDTH * SIMPLEFB_HEIGHT]; 78 79 int simplefb_match(struct device *, void *, void *); 80 void simplefb_attach(struct device *, struct device *, void *); 81 82 struct cfattach simplefb_ca = { 83 sizeof(struct simplefb_softc), simplefb_match, simplefb_attach 84 }; 85 86 struct cfdriver simplefb_cd = { 87 NULL, "simplefb", DV_DULL 88 }; 89 90 const char *simplefb_init(int, struct rasops_info *); 91 92 int simplefb_wsioctl(void *, u_long, caddr_t, int, struct proc *); 93 paddr_t simplefb_wsmmap(void *, off_t, int); 94 int simplefb_alloc_screen(void *, const struct wsscreen_descr *, 95 void **, int *, int *, uint32_t *); 96 97 struct wsdisplay_accessops simplefb_accessops = { 98 .ioctl = simplefb_wsioctl, 99 .mmap = simplefb_wsmmap, 100 .alloc_screen = simplefb_alloc_screen, 101 .free_screen = rasops_free_screen, 102 .show_screen = rasops_show_screen, 103 .getchar = rasops_getchar, 104 .load_font = rasops_load_font, 105 .list_font = rasops_list_font, 106 .scrollback = rasops_scrollback 107 }; 108 109 int 110 simplefb_match(struct device *parent, void *match, void *aux) 111 { 112 struct fdt_attach_args *faa = aux; 113 114 /* Don't attach if it has no address space. */ 115 if (faa->fa_nreg < 1 || faa->fa_reg[0].size == 0) 116 return 0; 117 118 /* Don't attach if another driver already claimed our framebuffer. */ 119 if (rasops_check_framebuffer(faa->fa_reg[0].addr)) 120 return 0; 121 122 return OF_is_compatible(faa->fa_node, "simple-framebuffer"); 123 } 124 125 void 126 simplefb_attach(struct device *parent, struct device *self, void *aux) 127 { 128 struct simplefb_softc *sc = (struct simplefb_softc *)self; 129 struct fdt_attach_args *faa = aux; 130 struct rasops_info *ri = &sc->sc_ri; 131 struct wsemuldisplaydev_attach_args waa; 132 const char *format; 133 int console = 0; 134 uint32_t defattr; 135 136 format = simplefb_init(faa->fa_node, ri); 137 if (format) { 138 printf(": unsupported format \"%s\"\n", format); 139 return; 140 } 141 142 if (faa->fa_node == stdout_node) 143 console = 1; 144 145 sc->sc_iot = faa->fa_iot; 146 sc->sc_paddr = faa->fa_reg[0].addr; 147 sc->sc_psize = faa->fa_reg[0].size; 148 if (bus_space_map(sc->sc_iot, sc->sc_paddr, sc->sc_psize, 149 BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE, &sc->sc_ioh)) { 150 printf(": can't map framebuffer\n"); 151 return; 152 } 153 154 ri->ri_bits = bus_space_vaddr(sc->sc_iot, sc->sc_ioh); 155 ri->ri_hw = sc; 156 157 if (console) { 158 /* Preserve contents. */ 159 ri->ri_bs = simplefb_bs; 160 ri->ri_flg &= ~RI_CLEAR; 161 } 162 163 printf(": %dx%d, %dbpp\n", ri->ri_width, ri->ri_height, ri->ri_depth); 164 165 ri->ri_flg |= RI_VCONS; 166 rasops_init(ri, SIMPLEFB_HEIGHT, SIMPLEFB_WIDTH); 167 168 strlcpy(sc->sc_wsd.name, "std", sizeof(sc->sc_wsd.name)); 169 sc->sc_wsd.capabilities = ri->ri_caps; 170 sc->sc_wsd.nrows = ri->ri_rows; 171 sc->sc_wsd.ncols = ri->ri_cols; 172 sc->sc_wsd.textops = &ri->ri_ops; 173 sc->sc_wsd.fontwidth = ri->ri_font->fontwidth; 174 sc->sc_wsd.fontheight = ri->ri_font->fontheight; 175 176 sc->sc_scrlist[0] = &sc->sc_wsd; 177 sc->sc_wsl.nscreens = 1; 178 sc->sc_wsl.screens = (const struct wsscreen_descr **)sc->sc_scrlist; 179 180 if (console) { 181 ri->ri_ops.pack_attr(ri->ri_active, 0, 0, 0, &defattr); 182 wsdisplay_cnattach(&sc->sc_wsd, ri->ri_active, 183 simplefb_ri.ri_ccol, simplefb_ri.ri_crow, defattr); 184 } 185 186 memset(&waa, 0, sizeof(waa)); 187 waa.scrdata = &sc->sc_wsl; 188 waa.accessops = &simplefb_accessops; 189 waa.accesscookie = ri; 190 waa.console = console; 191 192 config_found_sm(self, &waa, wsemuldisplaydevprint, 193 wsemuldisplaydevsubmatch); 194 } 195 196 const char * 197 simplefb_init(int node, struct rasops_info *ri) 198 { 199 struct simplefb_format *fmt = NULL; 200 static char format[16]; 201 int i; 202 203 format[0] = 0; 204 OF_getprop(node, "format", format, sizeof(format)); 205 format[sizeof(format) - 1] = 0; 206 207 for (i = 0; i < nitems(simplefb_formats); i++) { 208 if (strcmp(format, simplefb_formats[i].format) == 0) { 209 fmt = &simplefb_formats[i]; 210 break; 211 } 212 } 213 if (fmt == NULL) 214 return format; 215 216 ri->ri_width = OF_getpropint(node, "width", 0); 217 ri->ri_height = OF_getpropint(node, "height", 0); 218 ri->ri_stride = OF_getpropint(node, "stride", 0); 219 ri->ri_depth = fmt->depth; 220 ri->ri_rpos = fmt->rpos; 221 ri->ri_rnum = fmt->rnum; 222 ri->ri_gpos = fmt->gpos; 223 ri->ri_gnum = fmt->gnum; 224 ri->ri_bpos = fmt->bpos; 225 ri->ri_bnum = fmt->bnum; 226 ri->ri_flg = RI_CENTER | RI_CLEAR | RI_FULLCLEAR | RI_WRONLY; 227 228 return NULL; 229 } 230 231 int 232 simplefb_wsioctl(void *v, u_long cmd, caddr_t data, int flag, struct proc *p) 233 { 234 struct rasops_info *ri = v; 235 struct wsdisplay_param *dp = (struct wsdisplay_param *)data; 236 struct wsdisplay_fbinfo *wdf; 237 238 switch (cmd) { 239 case WSDISPLAYIO_GETPARAM: 240 if (ws_get_param) 241 return ws_get_param(dp); 242 return -1; 243 case WSDISPLAYIO_SETPARAM: 244 if (ws_set_param) 245 return ws_set_param(dp); 246 return -1; 247 case WSDISPLAYIO_GTYPE: 248 *(u_int *)data = WSDISPLAY_TYPE_EFIFB; 249 return 0; 250 case WSDISPLAYIO_GINFO: 251 wdf = (struct wsdisplay_fbinfo *)data; 252 wdf->width = ri->ri_width; 253 wdf->height = ri->ri_height; 254 wdf->depth = ri->ri_depth; 255 wdf->cmsize = 0; /* color map is unavailable */ 256 break; 257 case WSDISPLAYIO_LINEBYTES: 258 *(u_int *)data = ri->ri_stride; 259 break; 260 case WSDISPLAYIO_SMODE: 261 break; 262 case WSDISPLAYIO_GETSUPPORTEDDEPTH: 263 switch (ri->ri_depth) { 264 case 32: 265 *(u_int *)data = WSDISPLAYIO_DEPTH_24_32; 266 break; 267 case 24: 268 *(u_int *)data = WSDISPLAYIO_DEPTH_24_24; 269 break; 270 case 16: 271 *(u_int *)data = WSDISPLAYIO_DEPTH_16; 272 break; 273 case 15: 274 *(u_int *)data = WSDISPLAYIO_DEPTH_15; 275 break; 276 default: 277 return -1; 278 } 279 break; 280 default: 281 return -1; 282 } 283 284 return 0; 285 } 286 287 paddr_t 288 simplefb_wsmmap(void *v, off_t off, int prot) 289 { 290 struct rasops_info *ri = v; 291 struct simplefb_softc *sc = ri->ri_hw; 292 293 if (off < 0 || off >= sc->sc_psize) 294 return -1; 295 296 return ((sc->sc_paddr + off) | PMAP_NOCACHE); 297 } 298 299 int 300 simplefb_alloc_screen(void *v, const struct wsscreen_descr *type, 301 void **cookiep, int *curxp, int *curyp, uint32_t *attrp) 302 { 303 return rasops_alloc_screen(v, cookiep, curxp, curyp, attrp); 304 } 305 306 #include "ukbd.h" 307 308 #if NUKBD > 0 309 #include <dev/usb/ukbdvar.h> 310 #endif 311 312 void 313 simplefb_init_cons(bus_space_tag_t iot) 314 { 315 struct rasops_info *ri = &simplefb_ri; 316 bus_space_handle_t ioh; 317 struct fdt_reg reg; 318 void *node; 319 uint32_t defattr = 0; 320 321 node = fdt_find_cons("simple-framebuffer"); 322 if (node == NULL) 323 return; 324 325 if (fdt_get_reg(node, 0, ®)) 326 return; 327 328 if (bus_space_map(iot, reg.addr, reg.size, 329 BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE, &ioh)) 330 return; 331 332 ri->ri_bits = bus_space_vaddr(iot, ioh); 333 334 if (simplefb_init(stdout_node, ri)) 335 return; 336 337 ri->ri_bs = simplefb_bs; 338 rasops_init(ri, SIMPLEFB_HEIGHT, SIMPLEFB_WIDTH); 339 340 simplefb_wsd.capabilities = ri->ri_caps; 341 simplefb_wsd.ncols = ri->ri_cols; 342 simplefb_wsd.nrows = ri->ri_rows; 343 simplefb_wsd.textops = &ri->ri_ops; 344 simplefb_wsd.fontwidth = ri->ri_font->fontwidth; 345 simplefb_wsd.fontheight = ri->ri_font->fontheight; 346 347 ri->ri_ops.pack_attr(ri, 0, 0, 0, &defattr); 348 wsdisplay_cnattach(&simplefb_wsd, ri, 0, 0, defattr); 349 350 #if NUKBD > 0 351 /* Allow USB keyboards to become the console input device. */ 352 ukbd_cnattach(); 353 #endif 354 } 355