dma_sbus.c revision 182062
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: head/sys/sparc64/sbus/dma_sbus.c 182062 2008-08-23 15:20:33Z 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/ofw_bus_subr.h> 78#include <dev/ofw/openfirm.h> 79 80#include <machine/bus.h> 81#include <machine/bus_common.h> 82#include <machine/resource.h> 83 84#include <sparc64/sbus/lsi64854reg.h> 85#include <sparc64/sbus/lsi64854var.h> 86#include <sparc64/sbus/ofw_sbus.h> 87#include <sparc64/sbus/sbusreg.h> 88#include <sparc64/sbus/sbusvar.h> 89 90struct dma_devinfo { 91 struct ofw_bus_devinfo ddi_obdinfo; 92 struct resource_list ddi_rl; 93}; 94 95struct dma_softc { 96 struct lsi64854_softc sc_lsi64854; /* base device */ 97 int sc_ign; 98 int sc_slot; 99}; 100 101static devclass_t dma_devclass; 102 103static device_probe_t dma_probe; 104static device_attach_t dma_attach; 105static bus_print_child_t dma_print_child; 106static bus_probe_nomatch_t dma_probe_nomatch; 107static bus_get_resource_list_t dma_get_resource_list; 108static ofw_bus_get_devinfo_t dma_get_devinfo; 109 110static struct dma_devinfo *dma_setup_dinfo(device_t, struct dma_softc *, 111 phandle_t); 112static void dma_destroy_dinfo(struct dma_devinfo *); 113static int dma_print_res(struct dma_devinfo *); 114 115static device_method_t dma_methods[] = { 116 /* Device interface */ 117 DEVMETHOD(device_probe, dma_probe), 118 DEVMETHOD(device_attach, dma_attach), 119 DEVMETHOD(device_shutdown, bus_generic_shutdown), 120 DEVMETHOD(device_suspend, bus_generic_suspend), 121 DEVMETHOD(device_resume, bus_generic_resume), 122 123 /* Bus interface */ 124 DEVMETHOD(bus_print_child, dma_print_child), 125 DEVMETHOD(bus_probe_nomatch, dma_probe_nomatch), 126 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 127 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 128 DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource), 129 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource), 130 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 131 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 132 DEVMETHOD(bus_get_resource_list, dma_get_resource_list), 133 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 134 135 /* ofw_bus interface */ 136 DEVMETHOD(ofw_bus_get_devinfo, dma_get_devinfo), 137 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), 138 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), 139 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), 140 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), 141 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), 142 143 { 0, 0 } 144}; 145 146static driver_t dma_driver = { 147 "dma", 148 dma_methods, 149 sizeof(struct dma_softc), 150}; 151 152DRIVER_MODULE(dma, sbus, dma_driver, dma_devclass, 0, 0); 153MODULE_DEPEND(dma, sbus, 1, 1, 1); 154MODULE_VERSION(dma, 1); 155 156static int 157dma_probe(device_t dev) 158{ 159 const char *name; 160 161 name = ofw_bus_get_name(dev); 162 if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0 || 163 strcmp(name, "ledma") == 0) { 164 device_set_desc_copy(dev, name); 165 return (0); 166 } 167 return (ENXIO); 168} 169 170static int 171dma_attach(device_t dev) 172{ 173 struct dma_softc *dsc; 174 struct lsi64854_softc *lsc; 175 struct dma_devinfo *ddi; 176 device_t cdev; 177 const char *name; 178 char *cabletype; 179 uint32_t csr; 180 phandle_t child, node; 181 int error, burst, children; 182 183 dsc = device_get_softc(dev); 184 lsc = &dsc->sc_lsi64854; 185 186 name = ofw_bus_get_name(dev); 187 node = ofw_bus_get_node(dev); 188 dsc->sc_ign = sbus_get_ign(dev); 189 dsc->sc_slot = sbus_get_slot(dev); 190 191 lsc->sc_rid = 0; 192 lsc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &lsc->sc_rid, 193 RF_ACTIVE); 194 if (lsc->sc_res == NULL) { 195 device_printf(dev, "cannot allocate resources\n"); 196 return (ENXIO); 197 } 198 lsc->sc_regt = rman_get_bustag(lsc->sc_res); 199 lsc->sc_regh = rman_get_bushandle(lsc->sc_res); 200 201 if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0) 202 lsc->sc_channel = L64854_CHANNEL_SCSI; 203 else if (strcmp(name, "ledma") == 0) { 204 /* 205 * Check to see which cable type is currently active and 206 * set the appropriate bit in the ledma csr so that it 207 * gets used. If we didn't netboot, the PROM won't have 208 * the "cable-selection" property; default to TP and then 209 * the user can change it via a "media" option to ifconfig. 210 */ 211 csr = L64854_GCSR(lsc); 212 if ((OF_getprop_alloc(node, "cable-selection", 1, 213 (void **)&cabletype)) == -1) { 214 /* assume TP if nothing there */ 215 csr |= E_TP_AUI; 216 } else { 217 if (strcmp(cabletype, "aui") == 0) 218 csr &= ~E_TP_AUI; 219 else 220 csr |= E_TP_AUI; 221 free(cabletype, M_OFWPROP); 222 } 223 L64854_SCSR(lsc, csr); 224 DELAY(20000); /* manual says we need a 20ms delay */ 225 lsc->sc_channel = L64854_CHANNEL_ENET; 226 } else { 227 device_printf(dev, "unsupported DMA channel\n"); 228 error = ENXIO; 229 goto fail_lres; 230 } 231 232 error = bus_dma_tag_create( 233 bus_get_dma_tag(dev), /* parent */ 234 1, 0, /* alignment, boundary */ 235 BUS_SPACE_MAXADDR, /* lowaddr */ 236 BUS_SPACE_MAXADDR, /* highaddr */ 237 NULL, NULL, /* filter, filterarg */ 238 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 239 0, /* nsegments */ 240 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 241 0, /* flags */ 242 NULL, NULL, /* no locking */ 243 &lsc->sc_parent_dmat); 244 if (error != 0) { 245 device_printf(dev, "cannot allocate parent DMA tag\n"); 246 goto fail_lres; 247 } 248 249 burst = sbus_get_burstsz(dev); 250 lsc->sc_burst = (burst & SBUS_BURST_32) ? 32 : 251 (burst & SBUS_BURST_16) ? 16 : 0; 252 lsc->sc_dev = dev; 253 254 error = lsi64854_attach(lsc); 255 if (error != 0) { 256 device_printf(dev, "lsi64854_attach failed\n"); 257 goto fail_lpdma; 258 } 259 260 /* Attach children. */ 261 children = 0; 262 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 263 if ((ddi = dma_setup_dinfo(dev, dsc, child)) == NULL) 264 continue; 265 if (children != 0) { 266 device_printf(dev, 267 "<%s>: only one child per DMA channel supported\n", 268 ddi->ddi_obdinfo.obd_name); 269 dma_destroy_dinfo(ddi); 270 continue; 271 } 272 if ((cdev = device_add_child(dev, NULL, -1)) == NULL) { 273 device_printf(dev, "<%s>: device_add_child failed\n", 274 ddi->ddi_obdinfo.obd_name); 275 dma_destroy_dinfo(ddi); 276 continue; 277 } 278 device_set_ivars(cdev, ddi); 279 children++; 280 } 281 return (bus_generic_attach(dev)); 282 283 fail_lpdma: 284 bus_dma_tag_destroy(lsc->sc_parent_dmat); 285 fail_lres: 286 bus_release_resource(dev, SYS_RES_MEMORY, lsc->sc_rid, lsc->sc_res); 287 return (error); 288} 289 290static struct dma_devinfo * 291dma_setup_dinfo(device_t dev, struct dma_softc *dsc, phandle_t node) 292{ 293 struct dma_devinfo *ddi; 294 struct sbus_regs *reg; 295 uint32_t base, iv, *intr; 296 int i, nreg, nintr, slot, rslot; 297 298 ddi = malloc(sizeof(*ddi), M_DEVBUF, M_WAITOK | M_ZERO); 299 if (ofw_bus_gen_setup_devinfo(&ddi->ddi_obdinfo, node) != 0) { 300 free(ddi, M_DEVBUF); 301 return (NULL); 302 } 303 resource_list_init(&ddi->ddi_rl); 304 slot = -1; 305 nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)®); 306 if (nreg == -1) { 307 device_printf(dev, "<%s>: incomplete\n", 308 ddi->ddi_obdinfo.obd_name); 309 goto fail; 310 } 311 for (i = 0; i < nreg; i++) { 312 base = reg[i].sbr_offset; 313 if (SBUS_ABS(base)) { 314 rslot = SBUS_ABS_TO_SLOT(base); 315 base = SBUS_ABS_TO_OFFSET(base); 316 } else 317 rslot = reg[i].sbr_slot; 318 if (slot != -1 && slot != rslot) { 319 device_printf(dev, "<%s>: multiple slots\n", 320 ddi->ddi_obdinfo.obd_name); 321 free(reg, M_OFWPROP); 322 goto fail; 323 } 324 slot = rslot; 325 326 resource_list_add(&ddi->ddi_rl, SYS_RES_MEMORY, i, base, 327 base + reg[i].sbr_size, reg[i].sbr_size); 328 } 329 free(reg, M_OFWPROP); 330 if (slot != dsc->sc_slot) { 331 device_printf(dev, "<%s>: parent and child slot do not match\n", 332 ddi->ddi_obdinfo.obd_name); 333 goto fail; 334 } 335 336 /* 337 * The `interrupts' property contains the SBus interrupt level. 338 */ 339 nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intr), 340 (void **)&intr); 341 if (nintr != -1) { 342 for (i = 0; i < nintr; i++) { 343 iv = intr[i]; 344 /* 345 * SBus card devices need the slot number encoded into 346 * the vector as this is generally not done. 347 */ 348 if ((iv & INTMAP_OBIO_MASK) == 0) 349 iv |= slot << 3; 350 /* Set the IGN as appropriate. */ 351 iv |= dsc->sc_ign << INTMAP_IGN_SHIFT; 352 resource_list_add(&ddi->ddi_rl, SYS_RES_IRQ, i, 353 iv, iv, 1); 354 } 355 free(intr, M_OFWPROP); 356 } 357 return (ddi); 358 359 fail: 360 dma_destroy_dinfo(ddi); 361 return (NULL); 362} 363 364static void 365dma_destroy_dinfo(struct dma_devinfo *dinfo) 366{ 367 368 resource_list_free(&dinfo->ddi_rl); 369 ofw_bus_gen_destroy_devinfo(&dinfo->ddi_obdinfo); 370 free(dinfo, M_DEVBUF); 371} 372 373static int 374dma_print_child(device_t dev, device_t child) 375{ 376 int rv; 377 378 rv = bus_print_child_header(dev, child); 379 rv += dma_print_res(device_get_ivars(child)); 380 rv += bus_print_child_footer(dev, child); 381 return (rv); 382} 383 384static void 385dma_probe_nomatch(device_t dev, device_t child) 386{ 387 const char *type; 388 389 device_printf(dev, "<%s>", ofw_bus_get_name(child)); 390 dma_print_res(device_get_ivars(child)); 391 type = ofw_bus_get_type(child); 392 printf(" type %s (no driver attached)\n", 393 type != NULL ? type : "unknown"); 394} 395 396static struct resource_list * 397dma_get_resource_list(device_t dev, device_t child) 398{ 399 struct dma_devinfo *ddi; 400 401 ddi = device_get_ivars(child); 402 return (&ddi->ddi_rl); 403} 404 405static const struct ofw_bus_devinfo * 406dma_get_devinfo(device_t bus, device_t child) 407{ 408 struct dma_devinfo *ddi; 409 410 ddi = device_get_ivars(child); 411 return (&ddi->ddi_obdinfo); 412} 413 414static int 415dma_print_res(struct dma_devinfo *ddi) 416{ 417 int rv; 418 419 rv = 0; 420 rv += resource_list_print_type(&ddi->ddi_rl, "mem", SYS_RES_MEMORY, 421 "%#lx"); 422 rv += resource_list_print_type(&ddi->ddi_rl, "irq", SYS_RES_IRQ, "%ld"); 423 return (rv); 424} 425