1 /* $OpenBSD: simplefb.c,v 1.5 2018/08/27 09:30:07 kettenis 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 *, long *); 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 }; 107 108 int 109 simplefb_match(struct device *parent, void *match, void *aux) 110 { 111 struct fdt_attach_args *faa = aux; 112 113 /* Don't attach if another driver already claimed our framebuffer. */ 114 if (faa->fa_nreg > 0 && rasops_check_framebuffer(faa->fa_reg[0].addr)) 115 return 0; 116 117 return OF_is_compatible(faa->fa_node, "simple-framebuffer"); 118 } 119 120 void 121 simplefb_attach(struct device *parent, struct device *self, void *aux) 122 { 123 struct simplefb_softc *sc = (struct simplefb_softc *)self; 124 struct fdt_attach_args *faa = aux; 125 struct rasops_info *ri = &sc->sc_ri; 126 struct wsemuldisplaydev_attach_args waa; 127 const char *format; 128 int console = 0; 129 long defattr; 130 131 if (faa->fa_nreg < 1) 132 return; 133 134 format = simplefb_init(faa->fa_node, ri); 135 if (format) { 136 printf(": unsupported format \"%s\"\n", format); 137 return; 138 } 139 140 if (faa->fa_node == stdout_node) 141 console = 1; 142 143 sc->sc_iot = faa->fa_iot; 144 sc->sc_paddr = faa->fa_reg[0].addr; 145 sc->sc_psize = faa->fa_reg[0].size; 146 if (bus_space_map(sc->sc_iot, sc->sc_paddr, sc->sc_psize, 147 BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE, &sc->sc_ioh)) { 148 printf(": can't map framebuffer\n"); 149 return; 150 } 151 152 ri->ri_bits = bus_space_vaddr(sc->sc_iot, sc->sc_ioh); 153 ri->ri_hw = sc; 154 155 if (console) { 156 /* Preserve contents. */ 157 ri->ri_bs = simplefb_bs; 158 ri->ri_flg &= ~RI_CLEAR; 159 } 160 161 printf(": %dx%d, %dbpp\n", ri->ri_width, ri->ri_height, ri->ri_depth); 162 163 ri->ri_flg |= RI_VCONS; 164 rasops_init(ri, SIMPLEFB_HEIGHT, SIMPLEFB_WIDTH); 165 166 strlcpy(sc->sc_wsd.name, "std", sizeof(sc->sc_wsd.name)); 167 sc->sc_wsd.capabilities = ri->ri_caps; 168 sc->sc_wsd.nrows = ri->ri_rows; 169 sc->sc_wsd.ncols = ri->ri_cols; 170 sc->sc_wsd.textops = &ri->ri_ops; 171 sc->sc_wsd.fontwidth = ri->ri_font->fontwidth; 172 sc->sc_wsd.fontheight = ri->ri_font->fontheight; 173 174 sc->sc_scrlist[0] = &sc->sc_wsd; 175 sc->sc_wsl.nscreens = 1; 176 sc->sc_wsl.screens = (const struct wsscreen_descr **)sc->sc_scrlist; 177 178 if (console) { 179 ri->ri_ops.alloc_attr(ri->ri_active, 0, 0, 0, &defattr); 180 wsdisplay_cnattach(&sc->sc_wsd, ri->ri_active, 181 simplefb_ri.ri_ccol, simplefb_ri.ri_crow, defattr); 182 } 183 184 memset(&waa, 0, sizeof(waa)); 185 waa.scrdata = &sc->sc_wsl; 186 waa.accessops = &simplefb_accessops; 187 waa.accesscookie = ri; 188 waa.console = console; 189 190 config_found_sm(self, &waa, wsemuldisplaydevprint, 191 wsemuldisplaydevsubmatch); 192 } 193 194 const char * 195 simplefb_init(int node, struct rasops_info *ri) 196 { 197 struct simplefb_format *fmt = NULL; 198 static char format[16]; 199 int i; 200 201 format[0] = 0; 202 OF_getprop(node, "format", format, sizeof(format)); 203 format[sizeof(format) - 1] = 0; 204 205 for (i = 0; i < nitems(simplefb_formats); i++) { 206 if (strcmp(format, simplefb_formats[i].format) == 0) { 207 fmt = &simplefb_formats[i]; 208 break; 209 } 210 } 211 if (fmt == NULL) 212 return format; 213 214 ri->ri_width = OF_getpropint(node, "width", 0); 215 ri->ri_height = OF_getpropint(node, "height", 0); 216 ri->ri_stride = OF_getpropint(node, "stride", 0); 217 ri->ri_depth = fmt->depth; 218 ri->ri_rpos = fmt->rpos; 219 ri->ri_rnum = fmt->rnum; 220 ri->ri_gpos = fmt->gpos; 221 ri->ri_gnum = fmt->gnum; 222 ri->ri_bpos = fmt->bpos; 223 ri->ri_bnum = fmt->bnum; 224 ri->ri_flg = RI_CENTER | RI_CLEAR | RI_FULLCLEAR | RI_WRONLY; 225 226 return NULL; 227 } 228 229 int 230 simplefb_wsioctl(void *v, u_long cmd, caddr_t data, int flag, struct proc *p) 231 { 232 struct rasops_info *ri = v; 233 struct wsdisplay_fbinfo *wdf; 234 235 switch (cmd) { 236 case WSDISPLAYIO_GTYPE: 237 *(int *)data = WSDISPLAY_TYPE_EFIFB; 238 return 0; 239 case WSDISPLAYIO_GINFO: 240 wdf = (struct wsdisplay_fbinfo *)data; 241 wdf->width = ri->ri_width; 242 wdf->height = ri->ri_height; 243 wdf->depth = ri->ri_depth; 244 wdf->cmsize = 0; /* color map is unavailable */ 245 break; 246 case WSDISPLAYIO_LINEBYTES: 247 *(u_int *)data = ri->ri_stride; 248 break; 249 case WSDISPLAYIO_SMODE: 250 break; 251 case WSDISPLAYIO_GETSUPPORTEDDEPTH: 252 switch (ri->ri_depth) { 253 case 32: 254 *(u_int *)data = WSDISPLAYIO_DEPTH_24_32; 255 break; 256 case 24: 257 *(u_int *)data = WSDISPLAYIO_DEPTH_24_24; 258 break; 259 case 16: 260 *(u_int *)data = WSDISPLAYIO_DEPTH_16; 261 break; 262 case 15: 263 *(u_int *)data = WSDISPLAYIO_DEPTH_15; 264 break; 265 default: 266 return -1; 267 } 268 break; 269 default: 270 return -1; 271 } 272 273 return 0; 274 } 275 276 paddr_t 277 simplefb_wsmmap(void *v, off_t off, int prot) 278 { 279 struct rasops_info *ri = v; 280 struct simplefb_softc *sc = ri->ri_hw; 281 282 if (off < 0 || off >= sc->sc_psize) 283 return -1; 284 285 return ((sc->sc_paddr + off) | PMAP_NOCACHE); 286 } 287 288 int 289 simplefb_alloc_screen(void *v, const struct wsscreen_descr *type, 290 void **cookiep, int *curxp, int *curyp, long *attrp) 291 { 292 return rasops_alloc_screen(v, cookiep, curxp, curyp, attrp); 293 } 294 295 #include "ukbd.h" 296 297 #if NUKBD > 0 298 #include <dev/usb/ukbdvar.h> 299 #endif 300 301 void 302 simplefb_init_cons(bus_space_tag_t iot) 303 { 304 struct rasops_info *ri = &simplefb_ri; 305 bus_space_handle_t ioh; 306 struct fdt_reg reg; 307 void *node; 308 long defattr = 0; 309 310 node = fdt_find_cons("simple-framebuffer"); 311 if (node == NULL) 312 return; 313 314 if (fdt_get_reg(node, 0, ®)) 315 return; 316 317 if (bus_space_map(iot, reg.addr, reg.size, 318 BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE, &ioh)) 319 return; 320 321 ri->ri_bits = bus_space_vaddr(iot, ioh); 322 323 if (simplefb_init(stdout_node, ri)) 324 return; 325 326 ri->ri_bs = simplefb_bs; 327 rasops_init(ri, SIMPLEFB_HEIGHT, SIMPLEFB_WIDTH); 328 329 simplefb_wsd.capabilities = ri->ri_caps; 330 simplefb_wsd.ncols = ri->ri_cols; 331 simplefb_wsd.nrows = ri->ri_rows; 332 simplefb_wsd.textops = &ri->ri_ops; 333 simplefb_wsd.fontwidth = ri->ri_font->fontwidth; 334 simplefb_wsd.fontheight = ri->ri_font->fontheight; 335 336 ri->ri_ops.alloc_attr(ri, 0, 0, 0, &defattr); 337 wsdisplay_cnattach(&simplefb_wsd, ri, 0, 0, defattr); 338 339 #if NUKBD > 0 340 /* Allow USB keyboards to become the console input device. */ 341 ukbd_cnattach(); 342 #endif 343 } 344