leo.c revision 1.8
1 /* $NetBSD: leo.c,v 1.8 2002/10/23 09:10:55 jdolecek Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 maximum entropy <entropy (at) zippy.bernstein.com> 5 * Copyright (c) 1997 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the NetBSD 19 * Foundation, Inc. and its contributors. 20 * 4. Neither the name of The NetBSD Foundation nor the names of its 21 * contributors may be used to endorse or promote products derived 22 * from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 /* 38 * Driver for the Circad Leonardo 1.2 from Lexicor, a 24-bit true color 39 * VME graphics card based on the Texas Instruments TMS34061. 40 * 41 * Written by maximum entropy <entropy (at) zippy.bernstein.com>, December 5, 1997. 42 * 43 * This driver was written from scratch, but I referred to several other 44 * drivers in the NetBSD distribution as examples. The file I referred to 45 * the most was /sys/arch/atari/vme/if_le_vme.c. Due credits: 46 * Copyright (c) 1997 Leo Weppelman. All rights reserved. 47 * Copyright (c) 1995 Charles M. Hannum. All rights reserved. 48 * Copyright (c) 1992, 1993 49 * The Regents of the University of California. All rights reserved. 50 * This code is derived from software contributed to Berkeley by 51 * Ralph Campbell and Rick Macklem. 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 */ 55 56 #include <sys/param.h> 57 #include <sys/systm.h> 58 #include <sys/proc.h> 59 #include <sys/errno.h> 60 #include <sys/device.h> 61 #include <sys/conf.h> 62 #include <sys/ioctl.h> 63 #include <machine/cpu.h> 64 #include <machine/bus.h> 65 #include <machine/iomap.h> 66 #include <machine/scu.h> 67 #include <atari/vme/vmevar.h> 68 #include <atari/vme/leovar.h> 69 #include <atari/vme/leoioctl.h> 70 71 static struct leo_addresses { 72 u_long reg_addr; 73 u_int reg_size; 74 u_long mem_addr; 75 u_int mem_size; 76 } leostd[] = { 77 { 0xfed90000, 0x100, 0xfec00000, 0x100000 } 78 }; 79 80 #define NLEOSTD (sizeof(leostd) / sizeof(leostd[0])) 81 82 struct leo_softc { 83 struct device sc_dev; /* XXX what goes here? */ 84 bus_space_tag_t sc_iot; 85 bus_space_tag_t sc_memt; 86 bus_space_handle_t sc_ioh; 87 bus_space_handle_t sc_memh; 88 int sc_flags; 89 int sc_maddr; 90 u_int sc_msize; 91 }; 92 93 #define LEO_SC_FLAGS_INUSE 1 94 95 static int leo_match __P((struct device *, struct cfdata *, void *)); 96 static void leo_attach __P((struct device *, struct device *, void *)); 97 static int leo_probe __P((bus_space_tag_t *, bus_space_tag_t *, 98 bus_space_handle_t *, bus_space_handle_t *, 99 u_int, u_int)); 100 static int leo_init __P((struct leo_softc *, int)); 101 static int leo_scroll __P((struct leo_softc *, int)); 102 103 CFATTACH_DECL(leo, sizeof(struct leo_softc), 104 leo_match, leo_attach, NULL, NULL); 105 106 extern struct cfdriver leo_cd; 107 108 dev_type_open(leoopen); 109 dev_type_close(leoclose); 110 dev_type_read(leomove); 111 dev_type_ioctl(leoioctl); 112 dev_type_mmap(leommap); 113 114 const struct cdevsw leo_cdevsw = { 115 leoopen, leoclose, leomove, leomove, leoioctl, 116 nostop, notty, nopoll, leommap, nokqfilter, 117 }; 118 119 static int 120 leo_match(parent, cfp, aux) 121 struct device *parent; 122 struct cfdata *cfp; 123 void *aux; 124 { 125 struct vme_attach_args *va = aux; 126 int i; 127 bus_space_tag_t iot; 128 bus_space_tag_t memt; 129 bus_space_handle_t ioh; 130 bus_space_handle_t memh; 131 132 /* 133 * We are passed our configuration in the attachment arguments. 134 * The configuration information may be partially unspecified. 135 * For any unspecified configuration parameters, we fill in those 136 * parameters with data for a "standard" configuration. 137 * Once we have a fully specified configuration, we try to probe 138 * a card with that configuration. 139 * The Leonardo only has one configuration and it isn't likely 140 * to change, but this routine doesn't assume that's the case. 141 */ 142 iot = va->va_iot; 143 memt = va->va_memt; 144 for (i = 0; i < NLEOSTD; i++) { 145 struct leo_addresses *leo_ap = &leostd[i]; 146 int found = 0; 147 struct vme_attach_args vat = *va; 148 149 if (vat.va_irq != VMECF_IRQ_DEFAULT) { 150 printf("leo_match: config error: no irq support\n"); 151 return 0; 152 } 153 if (vat.va_iobase == VMECF_IOPORT_DEFAULT) 154 vat.va_iobase = leo_ap->reg_addr; 155 if (vat.va_maddr == VMECF_MEM_DEFAULT) 156 vat.va_maddr = leo_ap->mem_addr; 157 if (vat.va_iosize == VMECF_IOSIZE_DEFAULT) 158 vat.va_iosize = leo_ap->reg_size; 159 if (vat.va_msize == VMECF_MEMSIZ_DEFAULT) 160 vat.va_msize = leo_ap->mem_size; 161 if (bus_space_map(iot, vat.va_iobase, vat.va_iosize, 0, &ioh)) { 162 printf("leo_match: cannot map io area\n"); 163 return 0; 164 } 165 if (bus_space_map(memt, vat.va_maddr, vat.va_msize, 166 BUS_SPACE_MAP_LINEAR|BUS_SPACE_MAP_CACHEABLE, 167 &memh)) { 168 bus_space_unmap(iot, ioh, vat.va_iosize); 169 printf("leo_match: cannot map memory area\n"); 170 return 0; 171 } 172 found = leo_probe(&iot, &memt, &ioh, &memh, 173 vat.va_iosize, vat.va_msize); 174 bus_space_unmap(iot, ioh, vat.va_iosize); 175 bus_space_unmap(memt, memh, vat.va_msize); 176 if (found) { 177 *va = vat; 178 return 1; 179 } 180 } 181 return 0; 182 } 183 184 static int 185 leo_probe(iot, memt, ioh, memh, iosize, msize) 186 bus_space_tag_t *iot, *memt; 187 bus_space_handle_t *ioh, *memh; 188 u_int iosize, msize; 189 { 190 191 /* Test that our highest register is within the io range. */ 192 if (0xca > iosize) /* XXX */ 193 return 0; 194 /* Test if we can peek each register. */ 195 if (!bus_space_peek_1(*iot, *ioh, LEO_REG_MSBSCROLL)) 196 return 0; 197 if (!bus_space_peek_1(*iot, *ioh, LEO_REG_LSBSCROLL)) 198 return 0; 199 /* 200 * Write a test pattern at the start and end of the memory region, 201 * and test if the pattern can be read back. If so, the region is 202 * backed by memory (i.e. the card is present). 203 * On the Leonardo, the first byte of each longword isn't backed by 204 * physical memory, so we only compare the three low-order bytes 205 * with the test pattern. 206 */ 207 bus_space_write_4(*memt, *memh, 0, 0xa5a5a5a5); 208 if ((bus_space_read_4(*memt, *memh, 0) & 0xffffff) != 0xa5a5a5) 209 return 0; 210 bus_space_write_4(*memt, *memh, msize - 4, 0xa5a5a5a5); 211 if ((bus_space_read_4(*memt, *memh, msize - 4) & 0xffffff) 212 != 0xa5a5a5) 213 return 0; 214 return 1; 215 } 216 217 static void 218 leo_attach(parent, self, aux) 219 struct device *parent, *self; 220 void *aux; 221 { 222 struct leo_softc *sc = (struct leo_softc *)self; 223 struct vme_attach_args *va = aux; 224 bus_space_handle_t ioh; 225 bus_space_handle_t memh; 226 #ifndef SET_REGION 227 int i; 228 #endif 229 230 printf("\n"); 231 if (bus_space_map(va->va_iot, va->va_iobase, va->va_iosize, 0, &ioh)) 232 panic("leo_attach: cannot map io area"); 233 if (bus_space_map(va->va_memt, va->va_maddr, va->va_msize, 234 BUS_SPACE_MAP_LINEAR|BUS_SPACE_MAP_CACHEABLE, &memh)) 235 panic("leo_attach: cannot map memory area"); 236 #ifdef SET_REGION /* XXX seems to be unimplemented on atari? */ 237 bus_space_set_region_4(va->va_memt, memh, 0, 0, va->va_msize >> 2); 238 #else 239 for (i = 0; i < (va->va_msize >> 2); i++) 240 bus_space_write_4(va->va_memt, memh, i << 2, 0); 241 #endif 242 sc->sc_iot = va->va_iot; 243 sc->sc_ioh = ioh; 244 sc->sc_memt = va->va_memt; 245 sc->sc_memh = memh; 246 sc->sc_flags = 0; 247 sc->sc_maddr = va->va_maddr; 248 sc->sc_msize = va->va_msize; 249 leo_init(sc, 512); 250 leo_scroll(sc, 0); 251 } 252 253 int 254 leoopen(dev, flags, devtype, p) 255 dev_t dev; 256 int flags, devtype; 257 struct proc *p; 258 { 259 int unit = minor(dev); 260 struct leo_softc *sc; 261 int r; 262 263 if (unit >= leo_cd.cd_ndevs) 264 return ENXIO; 265 sc = leo_cd.cd_devs[unit]; 266 if (!sc) 267 return ENXIO; 268 if (sc->sc_flags & LEO_SC_FLAGS_INUSE) 269 return EBUSY; 270 r = leo_init(sc, 512); 271 if (r != 0) 272 return r; 273 r = leo_scroll(sc, 0); 274 if (r != 0) 275 return r; 276 sc->sc_flags |= LEO_SC_FLAGS_INUSE; 277 return 0; 278 } 279 280 static int 281 leo_init(sc, ysize) 282 struct leo_softc *sc; 283 int ysize; 284 { 285 286 if ((ysize != 256) && (ysize != 384) && (ysize != 512)) 287 return EINVAL; 288 /* XXX */ 289 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x00, 0x6); 290 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x08, 0x0); 291 if (ysize == 384) 292 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x10, 0x10); 293 else 294 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x10, 0x11); 295 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x18, 0x0); 296 if (ysize == 384) 297 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x20, 0x50); 298 else 299 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x20, 0x51); 300 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x28, 0x0); 301 if (ysize == 384) 302 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x30, 0x56); 303 else 304 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x30, 0x57); 305 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x38, 0x0); 306 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x40, 0x6); 307 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x48, 0x0); 308 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x50, 0x25); 309 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x58, 0x0); 310 if (ysize == 256) { 311 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x60, 0x1f); 312 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x68, 0x1); 313 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x70, 0x29); 314 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x78, 0x1); 315 } else if (ysize == 384) { 316 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x60, 0xa5); 317 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x68, 0x1); 318 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x70, 0xa7); 319 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x78, 0x1); 320 } else { 321 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x60, 0x1d); 322 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x68, 0x2); 323 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x70, 0x27); 324 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x78, 0x2); 325 } 326 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0xb8, 0x10); 327 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0xb0, 0x10); 328 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x80, 0x4); 329 if (ysize == 384) 330 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0xc8, 0x21); 331 else 332 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0xc8, 0x20); 333 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0xc0, 0x40); 334 return 0; 335 } 336 337 static int 338 leo_scroll(sc, scroll) 339 struct leo_softc *sc; 340 int scroll; 341 { 342 343 if ((scroll < 0) || (scroll > 255)) 344 return EINVAL; 345 bus_space_write_1(sc->sc_iot, sc->sc_ioh, LEO_REG_MSBSCROLL, 346 (scroll >> 6) && 0xff); 347 bus_space_write_1(sc->sc_iot, sc->sc_ioh, LEO_REG_LSBSCROLL, 348 (scroll << 2) && 0xff); 349 return 0; 350 } 351 352 int 353 leoclose(dev, flags, devtype, p) 354 dev_t dev; 355 int flags, devtype; 356 struct proc *p; 357 { 358 struct leo_softc *sc; 359 360 sc = leo_cd.cd_devs[minor(dev)]; 361 sc->sc_flags &= ~LEO_SC_FLAGS_INUSE; 362 return 0; 363 } 364 365 #define SMALLBSIZE 32 366 367 int 368 leomove(dev, uio, flags) 369 dev_t dev; 370 struct uio *uio; 371 int flags; 372 { 373 struct leo_softc *sc; 374 int length, size, error; 375 u_int8_t smallbuf[SMALLBSIZE]; 376 off_t offset; 377 378 sc = leo_cd.cd_devs[minor(dev)]; 379 if (uio->uio_offset > sc->sc_msize) 380 return 0; 381 length = sc->sc_msize - uio->uio_offset; 382 if (length > uio->uio_resid) 383 length = uio->uio_resid; 384 while (length > 0) { 385 size = length; 386 if (size > SMALLBSIZE) 387 size = SMALLBSIZE; 388 length -= size; 389 offset = uio->uio_offset; 390 if (uio->uio_rw == UIO_READ) 391 bus_space_read_region_1(sc->sc_memt, sc->sc_memh, 392 offset, smallbuf, size); 393 if ((error = uiomove((caddr_t)smallbuf, size, uio))) 394 return (error); 395 if (uio->uio_rw == UIO_WRITE) 396 bus_space_write_region_1(sc->sc_memt, sc->sc_memh, 397 offset, smallbuf, size); 398 } 399 return 0; 400 } 401 402 int 403 leoioctl(dev, cmd, data, flags, p) 404 dev_t dev; 405 u_long cmd; 406 caddr_t data; 407 int flags; 408 struct proc *p; 409 { 410 struct leo_softc *sc; 411 412 sc = leo_cd.cd_devs[minor(dev)]; 413 switch (cmd) { 414 case LIOCYRES: 415 return leo_init(sc, *(int *)data); 416 break; 417 case LIOCSCRL: 418 return leo_scroll(sc, *(int *)data); 419 break; 420 default: 421 return EINVAL; 422 break; 423 } 424 } 425 426 paddr_t 427 leommap(dev, offset, prot) 428 dev_t dev; 429 off_t offset; 430 int prot; 431 { 432 struct leo_softc *sc; 433 434 sc = leo_cd.cd_devs[minor(dev)]; 435 if (offset >= 0 && offset < sc->sc_msize) 436 return m68k_btop(sc->sc_maddr + offset); 437 return -1; 438 } 439
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