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 1.16 2008/06/26 05:42:18 ray Exp $ */ 2 /* $NetBSD: dma_sbus.c,v 1.32 2008/04/28 20:23:57 martin Exp $ */ 3 4 /*- 5 * SPDX-License-Identifier: BSD-2-Clause-NetBSD AND BSD-2-Clause-FreeBSD 6 * 7 * Copyright (c) 1998 The NetBSD Foundation, Inc. 8 * All rights reserved. 9 * 10 * This code is derived from software contributed to The NetBSD Foundation 11 * by Paul Kranenburg. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /*- 36 * Copyright (c) 1994 Peter Galbavy. All rights reserved. 37 * Copyright (c) 2005 Marius Strobl <marius@FreeBSD.org>. All rights reserved. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 49 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 50 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 51 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 52 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 53 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 54 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 55 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 56 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 57 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 58 */ 59 60 #include <sys/cdefs.h> 61 __FBSDID("$FreeBSD: releng/12.0/sys/sparc64/sbus/dma_sbus.c 332310 2018-04-08 22:59:34Z gonzo $"); 62 63 #include <sys/param.h> 64 #include <sys/systm.h> 65 #include <sys/bus.h> 66 #include <sys/kernel.h> 67 #include <sys/module.h> 68 #include <sys/rman.h> 69 70 #include <dev/ofw/ofw_bus.h> 71 #include <dev/ofw/ofw_bus_subr.h> 72 #include <dev/ofw/openfirm.h> 73 74 #include <machine/bus.h> 75 #include <machine/bus_common.h> 76 #include <machine/resource.h> 77 78 #include <sparc64/sbus/lsi64854reg.h> 79 #include <sparc64/sbus/lsi64854var.h> 80 #include <sparc64/sbus/ofw_sbus.h> 81 #include <sparc64/sbus/sbusreg.h> 82 #include <sparc64/sbus/sbusvar.h> 83 84 struct dma_devinfo { 85 struct ofw_bus_devinfo ddi_obdinfo; 86 struct resource_list ddi_rl; 87 }; 88 89 struct dma_softc { 90 struct lsi64854_softc sc_lsi64854; /* base device */ 91 int sc_ign; 92 int sc_slot; 93 }; 94 95 static devclass_t dma_devclass; 96 97 static device_probe_t dma_probe; 98 static device_attach_t dma_attach; 99 static bus_print_child_t dma_print_child; 100 static bus_probe_nomatch_t dma_probe_nomatch; 101 static bus_get_resource_list_t dma_get_resource_list; 102 static ofw_bus_get_devinfo_t dma_get_devinfo; 103 104 static struct dma_devinfo *dma_setup_dinfo(device_t, struct dma_softc *, 105 phandle_t); 106 static void dma_destroy_dinfo(struct dma_devinfo *); 107 static int dma_print_res(struct dma_devinfo *); 108 109 static device_method_t dma_methods[] = { 110 /* Device interface */ 111 DEVMETHOD(device_probe, dma_probe), 112 DEVMETHOD(device_attach, dma_attach), 113 DEVMETHOD(device_shutdown, bus_generic_shutdown), 114 DEVMETHOD(device_suspend, bus_generic_suspend), 115 DEVMETHOD(device_resume, bus_generic_resume), 116 117 /* Bus interface */ 118 DEVMETHOD(bus_print_child, dma_print_child), 119 DEVMETHOD(bus_probe_nomatch, dma_probe_nomatch), 120 DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource), 121 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 122 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 123 DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource), 124 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource), 125 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 126 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 127 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 128 DEVMETHOD(bus_get_resource_list, dma_get_resource_list), 129 DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str), 130 131 /* ofw_bus interface */ 132 DEVMETHOD(ofw_bus_get_devinfo, dma_get_devinfo), 133 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), 134 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), 135 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), 136 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), 137 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), 138 139 DEVMETHOD_END 140 }; 141 142 static driver_t dma_driver = { 143 "dma", 144 dma_methods, 145 sizeof(struct dma_softc), 146 }; 147 148 /* 149 * The probe order is handled by sbus(4) as we don't want the variants 150 * with children to be attached earlier than the stand-alone controllers 151 * in order to generally preserve the OFW device tree order. 152 */ 153 EARLY_DRIVER_MODULE(dma, sbus, dma_driver, dma_devclass, 0, 0, 154 BUS_PASS_DEFAULT); 155 MODULE_DEPEND(dma, sbus, 1, 1, 1); 156 MODULE_VERSION(dma, 1); 157 158 static int 159 dma_probe(device_t dev) 160 { 161 const char *name; 162 163 name = ofw_bus_get_name(dev); 164 if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0 || 165 strcmp(name, "ledma") == 0) { 166 device_set_desc_copy(dev, name); 167 return (0); 168 } 169 return (ENXIO); 170 } 171 172 static int 173 dma_attach(device_t dev) 174 { 175 struct dma_softc *dsc; 176 struct lsi64854_softc *lsc; 177 struct dma_devinfo *ddi; 178 device_t cdev; 179 const char *name; 180 char *cabletype; 181 uint32_t csr; 182 phandle_t child, node; 183 int error, i; 184 185 dsc = device_get_softc(dev); 186 lsc = &dsc->sc_lsi64854; 187 188 name = ofw_bus_get_name(dev); 189 node = ofw_bus_get_node(dev); 190 dsc->sc_ign = sbus_get_ign(dev); 191 dsc->sc_slot = sbus_get_slot(dev); 192 193 i = 0; 194 lsc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, 195 RF_ACTIVE); 196 if (lsc->sc_res == NULL) { 197 device_printf(dev, "cannot allocate resources\n"); 198 return (ENXIO); 199 } 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", 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 OF_prop_free(cabletype); 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, /* maxsize */ 239 BUS_SPACE_UNRESTRICTED, /* nsegments */ 240 BUS_SPACE_MAXSIZE, /* 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 i = sbus_get_burstsz(dev); 250 lsc->sc_burst = (i & SBUS_BURST_32) ? 32 : 251 (i & SBUS_BURST_16) ? 16 : 0; 252 lsc->sc_dev = dev; 253 254 /* Attach children. */ 255 i = 0; 256 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 257 if ((ddi = dma_setup_dinfo(dev, dsc, child)) == NULL) 258 continue; 259 if (i != 0) { 260 device_printf(dev, 261 "<%s>: only one child per DMA channel supported\n", 262 ddi->ddi_obdinfo.obd_name); 263 dma_destroy_dinfo(ddi); 264 continue; 265 } 266 if ((cdev = device_add_child(dev, NULL, -1)) == NULL) { 267 device_printf(dev, "<%s>: device_add_child failed\n", 268 ddi->ddi_obdinfo.obd_name); 269 dma_destroy_dinfo(ddi); 270 continue; 271 } 272 device_set_ivars(cdev, ddi); 273 i++; 274 } 275 return (bus_generic_attach(dev)); 276 277 fail_lres: 278 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(lsc->sc_res), 279 lsc->sc_res); 280 return (error); 281 } 282 283 static struct dma_devinfo * 284 dma_setup_dinfo(device_t dev, struct dma_softc *dsc, phandle_t node) 285 { 286 struct dma_devinfo *ddi; 287 struct sbus_regs *reg; 288 uint32_t base, iv, *intr; 289 int i, nreg, nintr, slot, rslot; 290 291 ddi = malloc(sizeof(*ddi), M_DEVBUF, M_WAITOK | M_ZERO); 292 if (ofw_bus_gen_setup_devinfo(&ddi->ddi_obdinfo, node) != 0) { 293 free(ddi, M_DEVBUF); 294 return (NULL); 295 } 296 resource_list_init(&ddi->ddi_rl); 297 slot = -1; 298 nreg = OF_getprop_alloc_multi(node, "reg", sizeof(*reg), (void **)®); 299 if (nreg == -1) { 300 device_printf(dev, "<%s>: incomplete\n", 301 ddi->ddi_obdinfo.obd_name); 302 goto fail; 303 } 304 for (i = 0; i < nreg; i++) { 305 base = reg[i].sbr_offset; 306 if (SBUS_ABS(base)) { 307 rslot = SBUS_ABS_TO_SLOT(base); 308 base = SBUS_ABS_TO_OFFSET(base); 309 } else 310 rslot = reg[i].sbr_slot; 311 if (slot != -1 && slot != rslot) { 312 device_printf(dev, "<%s>: multiple slots\n", 313 ddi->ddi_obdinfo.obd_name); 314 OF_prop_free(reg); 315 goto fail; 316 } 317 slot = rslot; 318 319 resource_list_add(&ddi->ddi_rl, SYS_RES_MEMORY, i, base, 320 base + reg[i].sbr_size, reg[i].sbr_size); 321 } 322 OF_prop_free(reg); 323 if (slot != dsc->sc_slot) { 324 device_printf(dev, "<%s>: parent and child slot do not match\n", 325 ddi->ddi_obdinfo.obd_name); 326 goto fail; 327 } 328 329 /* 330 * The `interrupts' property contains the SBus interrupt level. 331 */ 332 nintr = OF_getprop_alloc_multi(node, "interrupts", sizeof(*intr), 333 (void **)&intr); 334 if (nintr != -1) { 335 for (i = 0; i < nintr; i++) { 336 iv = intr[i]; 337 /* 338 * SBus card devices need the slot number encoded into 339 * the vector as this is generally not done. 340 */ 341 if ((iv & INTMAP_OBIO_MASK) == 0) 342 iv |= slot << 3; 343 /* Set the IGN as appropriate. */ 344 iv |= dsc->sc_ign << INTMAP_IGN_SHIFT; 345 resource_list_add(&ddi->ddi_rl, SYS_RES_IRQ, i, 346 iv, iv, 1); 347 } 348 OF_prop_free(intr); 349 } 350 return (ddi); 351 352 fail: 353 dma_destroy_dinfo(ddi); 354 return (NULL); 355 } 356 357 static void 358 dma_destroy_dinfo(struct dma_devinfo *dinfo) 359 { 360 361 resource_list_free(&dinfo->ddi_rl); 362 ofw_bus_gen_destroy_devinfo(&dinfo->ddi_obdinfo); 363 free(dinfo, M_DEVBUF); 364 } 365 366 static int 367 dma_print_child(device_t dev, device_t child) 368 { 369 int rv; 370 371 rv = bus_print_child_header(dev, child); 372 rv += dma_print_res(device_get_ivars(child)); 373 rv += bus_print_child_footer(dev, child); 374 return (rv); 375 } 376 377 static void 378 dma_probe_nomatch(device_t dev, device_t child) 379 { 380 const char *type; 381 382 device_printf(dev, "<%s>", ofw_bus_get_name(child)); 383 dma_print_res(device_get_ivars(child)); 384 type = ofw_bus_get_type(child); 385 printf(" type %s (no driver attached)\n", 386 type != NULL ? type : "unknown"); 387 } 388 389 static struct resource_list * 390 dma_get_resource_list(device_t dev, device_t child) 391 { 392 struct dma_devinfo *ddi; 393 394 ddi = device_get_ivars(child); 395 return (&ddi->ddi_rl); 396 } 397 398 static const struct ofw_bus_devinfo * 399 dma_get_devinfo(device_t bus, device_t child) 400 { 401 struct dma_devinfo *ddi; 402 403 ddi = device_get_ivars(child); 404 return (&ddi->ddi_obdinfo); 405 } 406 407 static int 408 dma_print_res(struct dma_devinfo *ddi) 409 { 410 int rv; 411 412 rv = 0; 413 rv += resource_list_print_type(&ddi->ddi_rl, "mem", SYS_RES_MEMORY, 414 "%#jx"); 415 rv += resource_list_print_type(&ddi->ddi_rl, "irq", SYS_RES_IRQ, "%jd"); 416 return (rv); 417 }
Cache object: f3943858d7723d6611ca1ce6b3806359
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