sti_machdep.c revision 1.3
1 /* $NetBSD: sti_machdep.c,v 1.3 2025/05/19 17:34:03 tsutsui Exp $ */ 2 /* $OpenBSD: sti_sgc.c,v 1.14 2007/05/26 00:36:03 krw Exp $ */ 3 4 /* 5 * Copyright (c) 2005, Miodrag Vallat 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 * 28 */ 29 /*- 30 * Copyright (c) 2020, 2025 Izumi Tsutsui. All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 41 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 42 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 43 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 44 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 45 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 47 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 48 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 49 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 50 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 51 */ 52 53 #include <sys/cdefs.h> 54 __KERNEL_RCSID(0, "$NetBSD: sti_machdep.c,v 1.3 2025/05/19 17:34:03 tsutsui Exp $"); 55 56 #include <sys/param.h> 57 #include <sys/device.h> 58 #include <sys/bus.h> 59 60 #include <dev/wscons/wsconsio.h> 61 62 #include <hp300/dev/sti_machdep.h> 63 64 /* 65 * 425e EVRX specific hardware 66 */ 67 /* 68 * EVRX RAMDAC (Bt458) is found at offset 0x060000 from SGC bus PA and 69 * offset 0x040000 length 0x1c0000 is mapped in MI sti via ROM region 2 70 */ 71 #define STI_EVRX_REGNO2OFFSET 0x020000 72 #define STI_EVRX_FBOFFSET 0x200000 73 74 #define EVRX_BT458_ADDR (STI_EVRX_REGNO2OFFSET + 0x200 + 2) 75 #define EVRX_BT458_CMAP (STI_EVRX_REGNO2OFFSET + 0x204 + 2) 76 #define EVRX_BT458_CTRL (STI_EVRX_REGNO2OFFSET + 0x208 + 2) 77 #define EVRX_BT458_OMAP (STI_EVRX_REGNO2OFFSET + 0x20C + 2) 78 79 /* from HP-UX /usr/lib/libddevrx.a */ 80 #define EVRX_MAGIC00 (STI_EVRX_REGNO2OFFSET + 0x600) 81 #define EVRX_MAGIC04 (STI_EVRX_REGNO2OFFSET + 0x604) 82 #define EVRX_MAGIC08 (STI_EVRX_REGNO2OFFSET + 0x608) 83 #define EVRX_MAGIC0C (STI_EVRX_REGNO2OFFSET + 0x60c) 84 #define EVRX_MAGIC10 (STI_EVRX_REGNO2OFFSET + 0x610) 85 #define EVRX_MAGIC10_BSY 0x00010000 86 #define EVRX_MAGIC18 (STI_EVRX_REGNO2OFFSET + 0x618) 87 #define EVRX_MAGIC1C (STI_EVRX_REGNO2OFFSET + 0x61c) 88 89 /* 90 * HP A1659A CRX specific hardware 91 */ 92 #define STI_CRX_FBOFFSET 0x01000000 93 94 /* 425e EVRX/CRX specific access functions */ 95 static int sti_evrx_putcmap(struct sti_screen *, u_int, u_int); 96 static void sti_evrx_resetramdac(struct sti_screen *); 97 static void sti_evrx_resetcmap(struct sti_screen *); 98 static void sti_evrx_setupfb(struct sti_screen *); 99 static paddr_t sti_m68k_mmap(void *, void *, off_t, int); 100 101 static struct bus_space_tag sticn_tag; 102 static struct sti_rom sticn_rom; 103 static struct sti_screen sticn_scr; 104 static bus_addr_t sticn_bases[STI_REGION_MAX]; 105 106 static const struct wsdisplay_accessops sti_m68k_accessops = { 107 sti_ioctl, 108 sti_m68k_mmap, 109 sti_alloc_screen, 110 sti_free_screen, 111 sti_show_screen, 112 sti_load_font 113 }; 114 115 void 116 sti_machdep_attach_console(struct sti_machdep_softc *sc) 117 { 118 struct sti_softc *ssc = &sc->sc_sti; 119 120 ssc->sc_flags |= STI_CONSOLE | STI_ATTACHED; 121 ssc->sc_rom = &sticn_rom; 122 ssc->sc_rom->rom_softc = ssc; 123 ssc->sc_scr = &sticn_scr; 124 ssc->sc_scr->scr_rom = ssc->sc_rom; 125 memcpy(ssc->bases, sticn_bases, sizeof(ssc->bases)); 126 127 sti_describe(ssc); 128 } 129 130 void 131 sti_machdep_attach(struct sti_machdep_softc *sc) 132 { 133 struct sti_softc *ssc = &sc->sc_sti; 134 struct sti_screen *scr; 135 paddr_t base = sc->sc_base; 136 struct wsemuldisplaydev_attach_args waa; 137 struct sti_dd *rom_dd; 138 uint32_t grid0; 139 140 /* Identify the board model by dd_grid */ 141 rom_dd = &ssc->sc_rom->rom_dd; 142 grid0 = rom_dd->dd_grid[0]; 143 scr = ssc->sc_scr; 144 145 switch (grid0) { 146 case STI_DD_EVRX: 147 /* 148 * 425e on-board EVRX framebuffer. 149 * bitmap memory can be accessed at offset +0x200000. 150 */ 151 sc->sc_bitmap = base + STI_EVRX_FBOFFSET; 152 153 aprint_normal_dev(ssc->sc_dev, "Enable mmap support\n"); 154 155 /* 156 * initialize Bt458 RAMDAC and preserve initial color map 157 */ 158 sti_evrx_resetramdac(scr); 159 sti_evrx_resetcmap(scr); 160 161 scr->setupfb = sti_evrx_setupfb; 162 scr->putcmap = sti_evrx_putcmap; 163 164 scr->scr_wsmode = WSDISPLAYIO_MODE_EMUL; 165 waa.console = ssc->sc_flags & STI_CONSOLE ? 1 : 0; 166 waa.scrdata = &scr->scr_screenlist; 167 waa.accessops = &sti_m68k_accessops; 168 waa.accesscookie = scr; 169 170 config_found(ssc->sc_dev, &waa, wsemuldisplaydevprint, 171 CFARGS_NONE); 172 break; 173 174 case STI_DD_CRX: 175 /* 176 * HP A1659A CRX on some 425t variants. 177 * bitmap memory can be accessed at offset +0x1000000. 178 */ 179 sc->sc_bitmap = base + STI_CRX_FBOFFSET; 180 181 aprint_normal_dev(ssc->sc_dev, "Enable mmap support\n"); 182 183 scr->scr_wsmode = WSDISPLAYIO_MODE_EMUL; 184 waa.console = ssc->sc_flags & STI_CONSOLE ? 1 : 0; 185 waa.scrdata = &scr->scr_screenlist; 186 waa.accessops = &sti_m68k_accessops; 187 waa.accesscookie = scr; 188 189 config_found(ssc->sc_dev, &waa, wsemuldisplaydevprint, 190 CFARGS_NONE); 191 break; 192 default: 193 /* 194 * Unsupported variants. 195 * Use default common sti(4) attachment (no bitmap support). 196 */ 197 sti_end_attach(ssc); 198 break; 199 } 200 } 201 202 static int 203 sti_evrx_putcmap(struct sti_screen *scr, u_int index, u_int count) 204 { 205 struct sti_rom *rom = scr->scr_rom; 206 bus_space_tag_t bst = rom->memt; 207 bus_space_handle_t bsh = rom->regh[2]; 208 int i; 209 210 /* magic setup from HP-UX */ 211 bus_space_write_4(bst, bsh, EVRX_MAGIC08, 0x00000001); 212 bus_space_write_4(bst, bsh, EVRX_MAGIC00, 0x00000001); 213 for (i = index; i < index + count; i++) { 214 /* this is what HP-UX woodDownloadCmap() does */ 215 while ((bus_space_read_4(bst, bsh, EVRX_MAGIC10) & 216 EVRX_MAGIC10_BSY) != 0) 217 continue; 218 bus_space_write_1(bst, bsh, EVRX_BT458_ADDR, i); 219 bus_space_write_1(bst, bsh, EVRX_BT458_CMAP, scr->scr_rcmap[i]); 220 bus_space_write_1(bst, bsh, EVRX_BT458_CMAP, scr->scr_gcmap[i]); 221 bus_space_write_4(bst, bsh, EVRX_MAGIC10, scr->scr_bcmap[i]); 222 } 223 return 0; 224 } 225 226 static void 227 sti_evrx_resetramdac(struct sti_screen *scr) 228 { 229 struct sti_rom *rom = scr->scr_rom; 230 bus_space_tag_t bst = rom->memt; 231 bus_space_handle_t bsh = rom->regh[2]; 232 #if 0 233 int i; 234 #endif 235 236 /* 237 * Initialize the Bt458. When we write to control registers, 238 * the address is not incremented automatically. So we specify 239 * it ourselves for each control register. 240 */ 241 242 /* all planes will be read */ 243 bus_space_write_1(bst, bsh, EVRX_BT458_ADDR, 0x04); 244 bus_space_write_1(bst, bsh, EVRX_BT458_CTRL, 0xff); 245 246 /* all planes have non-blink */ 247 bus_space_write_1(bst, bsh, EVRX_BT458_ADDR, 0x05); 248 bus_space_write_1(bst, bsh, EVRX_BT458_CTRL, 0x00); 249 250 /* palette enabled, ovly plane disabled */ 251 bus_space_write_1(bst, bsh, EVRX_BT458_ADDR, 0x06); 252 bus_space_write_1(bst, bsh, EVRX_BT458_CTRL, 0x40); 253 254 /* no test mode */ 255 bus_space_write_1(bst, bsh, EVRX_BT458_ADDR, 0x07); 256 bus_space_write_1(bst, bsh, EVRX_BT458_CTRL, 0x00); 257 258 /* magic initialization from HP-UX woodInitializeHardware() */ 259 bus_space_write_4(bst, bsh, EVRX_MAGIC00, 0x00000001); 260 bus_space_write_4(bst, bsh, EVRX_MAGIC04, 0x00000001); 261 bus_space_write_4(bst, bsh, EVRX_MAGIC08, 0x00000001); 262 bus_space_write_4(bst, bsh, EVRX_MAGIC0C, 0x00000001); 263 bus_space_write_4(bst, bsh, EVRX_MAGIC18, 0xFFFFFFFF); 264 bus_space_write_4(bst, bsh, EVRX_MAGIC1C, 0x00000000); 265 266 #if 0 267 bus_space_write_1(bst, bsh, EVRX_BT458_ADDR, 0x00); 268 for (i = 0; i < 4; i++) { 269 bus_space_write_1(bst, bsh, EVRX_BT458_OMAP, 0x00); 270 bus_space_write_1(bst, bsh, EVRX_BT458_OMAP, 0x00); 271 bus_space_write_1(bst, bsh, EVRX_BT458_OMAP, 0x00); 272 } 273 #endif 274 } 275 276 static void 277 sti_evrx_resetcmap(struct sti_screen *scr) 278 { 279 struct sti_rom *rom = scr->scr_rom; 280 bus_space_tag_t bst = rom->memt; 281 bus_space_handle_t bsh = rom->regh[2]; 282 int i; 283 284 /* magic setup from HP-UX */ 285 bus_space_write_4(bst, bsh, EVRX_MAGIC08, 0x00000001); 286 bus_space_write_4(bst, bsh, EVRX_MAGIC00, 0x00000001); 287 288 /* preserve palette values initialized by STI firmware */ 289 for (i = 0; i < STI_NCMAP; i++) { 290 /* this is what HP-UX woodUploadCmap() does */ 291 while ((bus_space_read_4(bst, bsh, EVRX_MAGIC10) & 292 EVRX_MAGIC10_BSY) != 0) 293 continue; 294 bus_space_write_1(bst, bsh, EVRX_BT458_ADDR, i); 295 scr->scr_rcmap[i] = bus_space_read_1(bst, bsh, EVRX_BT458_CMAP); 296 scr->scr_gcmap[i] = bus_space_read_1(bst, bsh, EVRX_BT458_CMAP); 297 scr->scr_bcmap[i] = bus_space_read_1(bst, bsh, EVRX_BT458_CMAP); 298 } 299 } 300 301 static void 302 sti_evrx_setupfb(struct sti_screen *scr) 303 { 304 305 sti_init(scr, 0); 306 sti_evrx_resetramdac(scr); 307 } 308 309 static paddr_t 310 sti_m68k_mmap(void *v, void *vs, off_t offset, int prot) 311 { 312 struct sti_screen *scr = (struct sti_screen *)v; 313 struct sti_rom *rom = scr->scr_rom; 314 struct sti_softc *ssc = rom->rom_softc; 315 struct sti_machdep_softc *sc = device_private(ssc->sc_dev); 316 paddr_t cookie = -1; 317 318 if ((offset & PAGE_MASK) != 0) 319 return -1; 320 321 switch (scr->scr_wsmode) { 322 case WSDISPLAYIO_MODE_MAPPED: 323 /* not implemented yet; what should be shown? */ 324 break; 325 case WSDISPLAYIO_MODE_DUMBFB: 326 if (offset >= 0 && offset < (scr->fbwidth * scr->fbheight)) 327 cookie = m68k_btop(sc->sc_bitmap + offset); 328 break; 329 default: 330 break; 331 } 332 333 return cookie; 334 } 335 336 void 337 sti_machdep_cnattach(bus_space_tag_t bst, paddr_t base) 338 { 339 int i; 340 341 sticn_tag = *bst; 342 343 /* sticn_bases[0] will be fixed in sti_cnattach() */ 344 for (i = 0; i < STI_REGION_MAX; i++) 345 sticn_bases[i] = (bus_addr_t)base; 346 347 sti_cnattach(&sticn_rom, &sticn_scr, &sticn_tag, sticn_bases, 348 STI_CODEBASE_ALT); 349 } 350
Indexes created Sun Oct 19 02:09:48 GMT 2025