Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/sparc64/sbus/dma_sbus.c
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1 /* $OpenBSD: dma_sbus.c,v 1.12 2005/03/03 01:41:45 miod Exp $ */ 2 /* $NetBSD: dma_sbus.c,v 1.5 2000/07/09 20:57:42 pk Exp $ */ 3 4 /*- 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Paul Kranenburg. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /*- 41 * Copyright (c) 1994 Peter Galbavy. All rights reserved. 42 * Copyright (c) 2005 Marius Strobl <marius@FreeBSD.org>. All rights reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. Redistributions in binary form must reproduce the above copyright 50 * notice, this list of conditions and the following disclaimer in the 51 * documentation and/or other materials provided with the distribution. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 54 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 55 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 56 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 57 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 58 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 62 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 63 */ 64 65 #include <sys/cdefs.h> 66 __FBSDID("$FreeBSD: releng/6.0/sys/sparc64/sbus/dma_sbus.c 146392 2005-05-19 14:51:10Z marius $"); 67 68 #include <sys/param.h> 69 #include <sys/systm.h> 70 #include <sys/bus.h> 71 #include <sys/kernel.h> 72 #include <sys/module.h> 73 #include <sys/resource.h> 74 #include <sys/rman.h> 75 76 #include <dev/ofw/ofw_bus.h> 77 #include <dev/ofw/openfirm.h> 78 79 #include <machine/bus.h> 80 #include <machine/bus_common.h> 81 #include <machine/resource.h> 82 83 #include <sparc64/sbus/lsi64854reg.h> 84 #include <sparc64/sbus/lsi64854var.h> 85 #include <sparc64/sbus/ofw_sbus.h> 86 #include <sparc64/sbus/sbusreg.h> 87 #include <sparc64/sbus/sbusvar.h> 88 89 struct dma_devinfo { 90 char *ddi_compat; /* PROM compatible */ 91 char *ddi_model; /* PROM model */ 92 char *ddi_name; /* PROM name */ 93 phandle_t ddi_node; /* PROM node */ 94 char *ddi_type; /* PROM device_type */ 95 96 struct resource_list ddi_rl; 97 }; 98 99 struct dma_softc { 100 struct lsi64854_softc sc_lsi64854; /* base device */ 101 int sc_ign; 102 int sc_slot; 103 }; 104 105 static devclass_t dma_devclass; 106 107 static device_probe_t dma_probe; 108 static device_attach_t dma_attach; 109 static bus_print_child_t dma_print_child; 110 static bus_probe_nomatch_t dma_probe_nomatch; 111 static bus_get_resource_list_t dma_get_resource_list; 112 #if 0 113 static bus_setup_intr_t dma_setup_intr; 114 #endif 115 static ofw_bus_get_compat_t dma_get_compat; 116 static ofw_bus_get_model_t dma_get_model; 117 static ofw_bus_get_name_t dma_get_name; 118 static ofw_bus_get_node_t dma_get_node; 119 static ofw_bus_get_type_t dma_get_type; 120 121 static struct dma_devinfo *dma_setup_dinfo(device_t, phandle_t, char *); 122 static void dma_destroy_dinfo(struct dma_devinfo *); 123 124 static device_method_t dma_methods[] = { 125 /* Device interface */ 126 DEVMETHOD(device_probe, dma_probe), 127 DEVMETHOD(device_attach, dma_attach), 128 129 /* Bus interface */ 130 DEVMETHOD(bus_print_child, dma_print_child), 131 DEVMETHOD(bus_probe_nomatch, dma_probe_nomatch), 132 #if 0 133 DEVMETHOD(bus_setup_intr, dma_setup_intr), 134 #else 135 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 136 #endif 137 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 138 DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource), 139 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource), 140 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 141 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 142 DEVMETHOD(bus_get_resource_list, dma_get_resource_list), 143 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 144 145 /* ofw_bus interface */ 146 DEVMETHOD(ofw_bus_get_compat, dma_get_compat), 147 DEVMETHOD(ofw_bus_get_model, dma_get_model), 148 DEVMETHOD(ofw_bus_get_name, dma_get_name), 149 DEVMETHOD(ofw_bus_get_node, dma_get_node), 150 DEVMETHOD(ofw_bus_get_type, dma_get_type), 151 152 { 0, 0 } 153 }; 154 155 static driver_t dma_driver = { 156 "dma", 157 dma_methods, 158 sizeof(struct dma_softc), 159 }; 160 161 DRIVER_MODULE(dma, sbus, dma_driver, dma_devclass, 0, 0); 162 163 static int 164 dma_probe(device_t dev) 165 { 166 const char *name; 167 168 name = ofw_bus_get_name(dev); 169 if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0 || 170 strcmp(name, "ledma") == 0) { 171 device_set_desc_copy(dev, name); 172 return (0); 173 } 174 return (ENXIO); 175 } 176 177 static int 178 dma_attach(device_t dev) 179 { 180 struct dma_softc *dsc; 181 struct lsi64854_softc *lsc; 182 struct dma_devinfo *ddi; 183 device_t cdev; 184 const char *name; 185 char *cabletype, *cname; 186 uint32_t csr; 187 phandle_t child, node; 188 int error, burst, children; 189 190 dsc = device_get_softc(dev); 191 bzero(dsc, sizeof(struct dma_softc)); 192 lsc = &dsc->sc_lsi64854; 193 194 name = ofw_bus_get_name(dev); 195 node = ofw_bus_get_node(dev); 196 dsc->sc_ign = sbus_get_ign(dev); 197 dsc->sc_slot = sbus_get_slot(dev); 198 199 lsc->sc_rid = 0; 200 lsc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &lsc->sc_rid, 201 RF_ACTIVE); 202 if (lsc->sc_res == NULL) { 203 device_printf(dev, "cannot allocate resources\n"); 204 return (ENXIO); 205 } 206 lsc->sc_regt = rman_get_bustag(lsc->sc_res); 207 lsc->sc_regh = rman_get_bushandle(lsc->sc_res); 208 209 if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0) 210 lsc->sc_channel = L64854_CHANNEL_SCSI; 211 else if (strcmp(name, "ledma") == 0) { 212 /* 213 * Check to see which cable type is currently active and 214 * set the appropriate bit in the ledma csr so that it 215 * gets used. If we didn't netboot, the PROM won't have 216 * the "cable-selection" property; default to TP and then 217 * the user can change it via a "media" option to ifconfig. 218 */ 219 csr = L64854_GCSR(lsc); 220 if ((OF_getprop_alloc(node, "cable-selection", 1, 221 (void **)&cabletype)) == -1) { 222 /* assume TP if nothing there */ 223 csr |= E_TP_AUI; 224 } else { 225 if (strcmp(cabletype, "aui") == 0) 226 csr &= ~E_TP_AUI; 227 else 228 csr |= E_TP_AUI; 229 free(cabletype, M_OFWPROP); 230 } 231 L64854_SCSR(lsc, csr); 232 DELAY(20000); /* manual says we need a 20ms delay */ 233 lsc->sc_channel = L64854_CHANNEL_ENET; 234 } else { 235 device_printf(dev, "unsupported DMA channel\n"); 236 error = ENXIO; 237 goto fail_lres; 238 } 239 240 error = bus_dma_tag_create( 241 NULL, /* parent */ 242 PAGE_SIZE, 0, /* alignment, boundary */ 243 BUS_SPACE_MAXADDR, /* lowaddr */ 244 BUS_SPACE_MAXADDR, /* highaddr */ 245 NULL, NULL, /* filter, filterarg */ 246 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 247 0, /* nsegments */ 248 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 249 0, /* flags */ 250 NULL, NULL, /* no locking */ 251 &lsc->sc_parent_dmat); 252 if (error != 0) { 253 device_printf(dev, "cannot allocate parent DMA tag\n"); 254 goto fail_lres; 255 } 256 257 burst = sbus_get_burstsz(dev); 258 lsc->sc_burst = (burst & SBUS_BURST_32) ? 32 : 259 (burst & SBUS_BURST_16) ? 16 : 0; 260 lsc->sc_dev = dev; 261 262 error = lsi64854_attach(lsc); 263 if (error != 0) { 264 device_printf(dev, "lsi64854_attach failed\n"); 265 goto fail_lpdma; 266 } 267 268 /* Attach children. */ 269 children = 0; 270 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 271 if ((OF_getprop_alloc(child, "name", 1, (void **)&cname)) == -1) 272 continue; 273 if ((ddi = dma_setup_dinfo(dev, child, cname)) == NULL) { 274 device_printf(dev, "<%s>: incomplete\n", cname); 275 free(cname, M_OFWPROP); 276 continue; 277 } 278 if (children != 0) { 279 device_printf(dev, "<%s>: only one child per DMA " 280 "channel supported\n", cname); 281 dma_destroy_dinfo(ddi); 282 free(cname, M_OFWPROP); 283 continue; 284 } 285 if ((cdev = device_add_child(dev, NULL, -1)) == NULL) { 286 device_printf(dev, "<%s>: device_add_child failed\n", 287 cname); 288 dma_destroy_dinfo(ddi); 289 free(cname, M_OFWPROP); 290 continue; 291 } 292 device_set_ivars(cdev, ddi); 293 children++; 294 } 295 error = bus_generic_attach(dev); 296 if (error != 0) { 297 device_printf(dev, "bus_generic_attach failed\n"); 298 goto fail_lsi; 299 } 300 301 return (0); 302 303 fail_lsi: 304 lsi64854_detach(lsc); 305 fail_lpdma: 306 bus_dma_tag_destroy(lsc->sc_parent_dmat); 307 fail_lres: 308 bus_release_resource(dev, SYS_RES_MEMORY, lsc->sc_rid, lsc->sc_res); 309 return (error); 310 } 311 312 static struct dma_devinfo * 313 dma_setup_dinfo(device_t dev, phandle_t node, char *name) 314 { 315 struct dma_softc *dsc; 316 struct dma_devinfo *ddi; 317 struct sbus_regs *reg; 318 uint32_t base, iv, *intr; 319 int i, nreg, nintr, slot, rslot; 320 321 dsc = device_get_softc(dev); 322 323 ddi = malloc(sizeof(*ddi), M_DEVBUF, M_WAITOK | M_ZERO); 324 if (ddi == NULL) 325 return (NULL); 326 resource_list_init(&ddi->ddi_rl); 327 ddi->ddi_name = name; 328 ddi->ddi_node = node; 329 OF_getprop_alloc(node, "compatible", 1, (void **)&ddi->ddi_compat); 330 OF_getprop_alloc(node, "device_type", 1, (void **)&ddi->ddi_type); 331 OF_getprop_alloc(node, "model", 1, (void **)&ddi->ddi_model); 332 slot = -1; 333 nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)®); 334 if (nreg == -1) { 335 dma_destroy_dinfo(ddi); 336 return (NULL); 337 } 338 for (i = 0; i < nreg; i++) { 339 base = reg[i].sbr_offset; 340 if (SBUS_ABS(base)) { 341 rslot = SBUS_ABS_TO_SLOT(base); 342 base = SBUS_ABS_TO_OFFSET(base); 343 } else 344 rslot = reg[i].sbr_slot; 345 if (slot != -1 && slot != rslot) { 346 device_printf(dev, "<%s>: multiple slots\n", name); 347 free(reg, M_OFWPROP); 348 dma_destroy_dinfo(ddi); 349 return (NULL); 350 } 351 slot = rslot; 352 353 resource_list_add(&ddi->ddi_rl, SYS_RES_MEMORY, i, base, 354 base + reg[i].sbr_size, reg[i].sbr_size); 355 } 356 free(reg, M_OFWPROP); 357 if (slot != dsc->sc_slot) { 358 device_printf(dev, "<%s>: parent and child slot do not match\n", 359 name); 360 dma_destroy_dinfo(ddi); 361 return (NULL); 362 } 363 364 /* 365 * The `interrupts' property contains the SBus interrupt level. 366 */ 367 nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intr), 368 (void **)&intr); 369 if (nintr != -1) { 370 for (i = 0; i < nintr; i++) { 371 iv = intr[i]; 372 /* 373 * SBus card devices need the slot number encoded into 374 * the vector as this is generally not done. 375 */ 376 if ((iv & INTMAP_OBIO_MASK) == 0) 377 iv |= slot << 3; 378 /* Set the IGN as appropriate. */ 379 iv |= dsc->sc_ign << INTMAP_IGN_SHIFT; 380 resource_list_add(&ddi->ddi_rl, SYS_RES_IRQ, i, 381 iv, iv, 1); 382 } 383 free(intr, M_OFWPROP); 384 } 385 return (ddi); 386 } 387 388 static void 389 dma_destroy_dinfo(struct dma_devinfo *dinfo) 390 { 391 392 resource_list_free(&dinfo->ddi_rl); 393 if (dinfo->ddi_compat != NULL) 394 free(dinfo->ddi_compat, M_OFWPROP); 395 if (dinfo->ddi_model != NULL) 396 free(dinfo->ddi_model, M_OFWPROP); 397 if (dinfo->ddi_type != NULL) 398 free(dinfo->ddi_type, M_OFWPROP); 399 free(dinfo, M_DEVBUF); 400 } 401 402 static int 403 dma_print_child(device_t dev, device_t child) 404 { 405 struct dma_devinfo *ddi; 406 struct resource_list *rl; 407 int rv; 408 409 ddi = device_get_ivars(child); 410 rl = &ddi->ddi_rl; 411 rv = bus_print_child_header(dev, child); 412 rv += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx"); 413 rv += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); 414 rv += bus_print_child_footer(dev, child); 415 return (rv); 416 } 417 418 static void 419 dma_probe_nomatch(device_t dev, device_t child) 420 { 421 struct dma_devinfo *ddi; 422 struct resource_list *rl; 423 424 ddi = device_get_ivars(child); 425 rl = &ddi->ddi_rl; 426 device_printf(dev, "<%s>", ddi->ddi_name); 427 resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx"); 428 resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); 429 printf(" type %s (no driver attached)\n", 430 ddi->ddi_type != NULL ? ddi->ddi_type : "unknown"); 431 } 432 433 static struct resource_list * 434 dma_get_resource_list(device_t dev, device_t child) 435 { 436 struct dma_devinfo *ddi; 437 438 ddi = device_get_ivars(child); 439 return (&ddi->ddi_rl); 440 } 441 442 #if 0 443 static int 444 dma_setup_intr(device_t dev, device_t child, struct resource *ires, int flags, 445 driver_intr_t *intr, void *arg, void **cookiep) 446 { 447 struct lsi64854_softc *sc; 448 449 sc = (struct lsi64854_softc *)device_get_softc(dev); 450 /* XXX - for now only le; do ESP later */ 451 if (sc->sc_channel == L64854_CHANNEL_ENET) { 452 sc->sc_intrchain = intr; 453 sc->sc_intrchainarg = arg; 454 intr = (driver_intr_t *)lsi64854_enet_intr; 455 arg = sc; 456 } 457 458 return (BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, 459 intr, arg, cookiep)); 460 } 461 #endif 462 463 static const char * 464 dma_get_compat(device_t bus, device_t dev) 465 { 466 struct dma_devinfo *dinfo; 467 468 dinfo = device_get_ivars(dev); 469 return (dinfo->ddi_compat); 470 } 471 472 static const char * 473 dma_get_model(device_t bus, device_t dev) 474 { 475 struct dma_devinfo *dinfo; 476 477 dinfo = device_get_ivars(dev); 478 return (dinfo->ddi_model); 479 } 480 481 static const char * 482 dma_get_name(device_t bus, device_t dev) 483 { 484 struct dma_devinfo *dinfo; 485 486 dinfo = device_get_ivars(dev); 487 return (dinfo->ddi_name); 488 } 489 490 static phandle_t 491 dma_get_node(device_t bus, device_t dev) 492 { 493 struct dma_devinfo *dinfo; 494 495 dinfo = device_get_ivars(dev); 496 return (dinfo->ddi_node); 497 } 498 499 static const char * 500 dma_get_type(device_t bus, device_t dev) 501 { 502 struct dma_devinfo *dinfo; 503 504 dinfo = device_get_ivars(dev); 505 return (dinfo->ddi_type); 506 }
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