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("$FreeBSD$"); 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 90 struct dma_devinfo { 91 struct ofw_bus_devinfo ddi_obdinfo; 92 struct resource_list ddi_rl; 93 }; 94 95 struct dma_softc { 96 struct lsi64854_softc sc_lsi64854; /* base device */ 97 int sc_ign; 98 int sc_slot; 99 }; 100 101 static devclass_t dma_devclass; 102 103 static device_probe_t dma_probe; 104 static device_attach_t dma_attach; 105 static bus_print_child_t dma_print_child; 106 static bus_probe_nomatch_t dma_probe_nomatch; 107 static bus_get_resource_list_t dma_get_resource_list; 108 static ofw_bus_get_devinfo_t dma_get_devinfo; 109 110 static struct dma_devinfo *dma_setup_dinfo(device_t, struct dma_softc *, 111 phandle_t); 112 static void dma_destroy_dinfo(struct dma_devinfo *); 113 static int dma_print_res(struct dma_devinfo *); 114 115 static 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 }; 145 146 static driver_t dma_driver = { 147 "dma", 148 dma_methods, 149 sizeof(struct dma_softc), 150 }; 151 152 DRIVER_MODULE(dma, sbus, dma_driver, dma_devclass, 0, 0); 153 154 static int 155 dma_probe(device_t dev) 156 { 157 const char *name; 158 159 name = ofw_bus_get_name(dev); 160 if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0 || 161 strcmp(name, "ledma") == 0) { 162 device_set_desc_copy(dev, name); 163 return (0); 164 } 165 return (ENXIO); 166 } 167 168 static int 169 dma_attach(device_t dev) 170 { 171 struct dma_softc *dsc; 172 struct lsi64854_softc *lsc; 173 struct dma_devinfo *ddi; 174 device_t cdev; 175 const char *name; 176 char *cabletype; 177 uint32_t csr; 178 phandle_t child, node; 179 int error, burst, children; 180 181 dsc = device_get_softc(dev); 182 lsc = &dsc->sc_lsi64854; 183 184 name = ofw_bus_get_name(dev); 185 node = ofw_bus_get_node(dev); 186 dsc->sc_ign = sbus_get_ign(dev); 187 dsc->sc_slot = sbus_get_slot(dev); 188 189 lsc->sc_rid = 0; 190 lsc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &lsc->sc_rid, 191 RF_ACTIVE); 192 if (lsc->sc_res == NULL) { 193 device_printf(dev, "cannot allocate resources\n"); 194 return (ENXIO); 195 } 196 lsc->sc_regt = rman_get_bustag(lsc->sc_res); 197 lsc->sc_regh = rman_get_bushandle(lsc->sc_res); 198 199 if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0) 200 lsc->sc_channel = L64854_CHANNEL_SCSI; 201 else if (strcmp(name, "ledma") == 0) { 202 /* 203 * Check to see which cable type is currently active and 204 * set the appropriate bit in the ledma csr so that it 205 * gets used. If we didn't netboot, the PROM won't have 206 * the "cable-selection" property; default to TP and then 207 * the user can change it via a "media" option to ifconfig. 208 */ 209 csr = L64854_GCSR(lsc); 210 if ((OF_getprop_alloc(node, "cable-selection", 1, 211 (void **)&cabletype)) == -1) { 212 /* assume TP if nothing there */ 213 csr |= E_TP_AUI; 214 } else { 215 if (strcmp(cabletype, "aui") == 0) 216 csr &= ~E_TP_AUI; 217 else 218 csr |= E_TP_AUI; 219 free(cabletype, M_OFWPROP); 220 } 221 L64854_SCSR(lsc, csr); 222 DELAY(20000); /* manual says we need a 20ms delay */ 223 lsc->sc_channel = L64854_CHANNEL_ENET; 224 } else { 225 device_printf(dev, "unsupported DMA channel\n"); 226 error = ENXIO; 227 goto fail_lres; 228 } 229 230 error = bus_dma_tag_create( 231 bus_get_dma_tag(dev), /* parent */ 232 1, 0, /* alignment, boundary */ 233 BUS_SPACE_MAXADDR, /* lowaddr */ 234 BUS_SPACE_MAXADDR, /* highaddr */ 235 NULL, NULL, /* filter, filterarg */ 236 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 237 0, /* nsegments */ 238 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 239 0, /* flags */ 240 NULL, NULL, /* no locking */ 241 &lsc->sc_parent_dmat); 242 if (error != 0) { 243 device_printf(dev, "cannot allocate parent DMA tag\n"); 244 goto fail_lres; 245 } 246 247 burst = sbus_get_burstsz(dev); 248 lsc->sc_burst = (burst & SBUS_BURST_32) ? 32 : 249 (burst & SBUS_BURST_16) ? 16 : 0; 250 lsc->sc_dev = dev; 251 252 error = lsi64854_attach(lsc); 253 if (error != 0) { 254 device_printf(dev, "lsi64854_attach failed\n"); 255 goto fail_lpdma; 256 } 257 258 /* Attach children. */ 259 children = 0; 260 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 261 if ((ddi = dma_setup_dinfo(dev, dsc, child)) == NULL) 262 continue; 263 if (children != 0) { 264 device_printf(dev, 265 "<%s>: only one child per DMA channel supported\n", 266 ddi->ddi_obdinfo.obd_name); 267 dma_destroy_dinfo(ddi); 268 continue; 269 } 270 if ((cdev = device_add_child(dev, NULL, -1)) == NULL) { 271 device_printf(dev, "<%s>: device_add_child failed\n", 272 ddi->ddi_obdinfo.obd_name); 273 dma_destroy_dinfo(ddi); 274 continue; 275 } 276 device_set_ivars(cdev, ddi); 277 children++; 278 } 279 return (bus_generic_attach(dev)); 280 281 fail_lpdma: 282 bus_dma_tag_destroy(lsc->sc_parent_dmat); 283 fail_lres: 284 bus_release_resource(dev, SYS_RES_MEMORY, lsc->sc_rid, lsc->sc_res); 285 return (error); 286 } 287 288 static struct dma_devinfo * 289 dma_setup_dinfo(device_t dev, struct dma_softc *dsc, phandle_t node) 290 { 291 struct dma_devinfo *ddi; 292 struct sbus_regs *reg; 293 uint32_t base, iv, *intr; 294 int i, nreg, nintr, slot, rslot; 295 296 ddi = malloc(sizeof(*ddi), M_DEVBUF, M_WAITOK | M_ZERO); 297 if (ofw_bus_gen_setup_devinfo(&ddi->ddi_obdinfo, node) != 0) { 298 free(ddi, M_DEVBUF); 299 return (NULL); 300 } 301 resource_list_init(&ddi->ddi_rl); 302 slot = -1; 303 nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)®); 304 if (nreg == -1) { 305 device_printf(dev, "<%s>: incomplete\n", 306 ddi->ddi_obdinfo.obd_name); 307 goto fail; 308 } 309 for (i = 0; i < nreg; i++) { 310 base = reg[i].sbr_offset; 311 if (SBUS_ABS(base)) { 312 rslot = SBUS_ABS_TO_SLOT(base); 313 base = SBUS_ABS_TO_OFFSET(base); 314 } else 315 rslot = reg[i].sbr_slot; 316 if (slot != -1 && slot != rslot) { 317 device_printf(dev, "<%s>: multiple slots\n", 318 ddi->ddi_obdinfo.obd_name); 319 free(reg, M_OFWPROP); 320 goto fail; 321 } 322 slot = rslot; 323 324 resource_list_add(&ddi->ddi_rl, SYS_RES_MEMORY, i, base, 325 base + reg[i].sbr_size, reg[i].sbr_size); 326 } 327 free(reg, M_OFWPROP); 328 if (slot != dsc->sc_slot) { 329 device_printf(dev, "<%s>: parent and child slot do not match\n", 330 ddi->ddi_obdinfo.obd_name); 331 goto fail; 332 } 333 334 /* 335 * The `interrupts' property contains the SBus interrupt level. 336 */ 337 nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intr), 338 (void **)&intr); 339 if (nintr != -1) { 340 for (i = 0; i < nintr; i++) { 341 iv = intr[i]; 342 /* 343 * SBus card devices need the slot number encoded into 344 * the vector as this is generally not done. 345 */ 346 if ((iv & INTMAP_OBIO_MASK) == 0) 347 iv |= slot << 3; 348 /* Set the IGN as appropriate. */ 349 iv |= dsc->sc_ign << INTMAP_IGN_SHIFT; 350 resource_list_add(&ddi->ddi_rl, SYS_RES_IRQ, i, 351 iv, iv, 1); 352 } 353 free(intr, M_OFWPROP); 354 } 355 return (ddi); 356 357 fail: 358 dma_destroy_dinfo(ddi); 359 return (NULL); 360 } 361 362 static void 363 dma_destroy_dinfo(struct dma_devinfo *dinfo) 364 { 365 366 resource_list_free(&dinfo->ddi_rl); 367 ofw_bus_gen_destroy_devinfo(&dinfo->ddi_obdinfo); 368 free(dinfo, M_DEVBUF); 369 } 370 371 static int 372 dma_print_child(device_t dev, device_t child) 373 { 374 int rv; 375 376 rv = bus_print_child_header(dev, child); 377 rv += dma_print_res(device_get_ivars(child)); 378 rv += bus_print_child_footer(dev, child); 379 return (rv); 380 } 381 382 static void 383 dma_probe_nomatch(device_t dev, device_t child) 384 { 385 const char *type; 386 387 device_printf(dev, "<%s>", ofw_bus_get_name(child)); 388 dma_print_res(device_get_ivars(child)); 389 type = ofw_bus_get_type(child); 390 printf(" type %s (no driver attached)\n", 391 type != NULL ? type : "unknown"); 392 } 393 394 static struct resource_list * 395 dma_get_resource_list(device_t dev, device_t child) 396 { 397 struct dma_devinfo *ddi; 398 399 ddi = device_get_ivars(child); 400 return (&ddi->ddi_rl); 401 } 402 403 static const struct ofw_bus_devinfo * 404 dma_get_devinfo(device_t bus, device_t child) 405 { 406 struct dma_devinfo *ddi; 407 408 ddi = device_get_ivars(child); 409 return (&ddi->ddi_obdinfo); 410 } 411 412 static int 413 dma_print_res(struct dma_devinfo *ddi) 414 { 415 int rv; 416 417 rv = 0; 418 rv += resource_list_print_type(&ddi->ddi_rl, "mem", SYS_RES_MEMORY, 419 "%#lx"); 420 rv += resource_list_print_type(&ddi->ddi_rl, "irq", SYS_RES_IRQ, "%ld"); 421 return (rv); 422 }
Cache object: f31b5d81411a729abc04e576c4e80150
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