dma_sbus.c revision 219567
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 * 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33/*- 34 * Copyright (c) 1994 Peter Galbavy. All rights reserved. 35 * Copyright (c) 2005 Marius Strobl <marius@FreeBSD.org>. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56 */ 57 58#include <sys/cdefs.h> 59__FBSDID("$FreeBSD: head/sys/sparc64/sbus/dma_sbus.c 219567 2011-03-12 14:33:32Z marius $"); 60 61#include <sys/param.h> 62#include <sys/systm.h> 63#include <sys/bus.h> 64#include <sys/kernel.h> 65#include <sys/module.h> 66#include <sys/rman.h> 67 68#include <dev/ofw/ofw_bus.h> 69#include <dev/ofw/ofw_bus_subr.h> 70#include <dev/ofw/openfirm.h> 71 72#include <machine/bus.h> 73#include <machine/bus_common.h> 74#include <machine/resource.h> 75 76#include <sparc64/sbus/lsi64854reg.h> 77#include <sparc64/sbus/lsi64854var.h> 78#include <sparc64/sbus/ofw_sbus.h> 79#include <sparc64/sbus/sbusreg.h> 80#include <sparc64/sbus/sbusvar.h> 81 82struct dma_devinfo { 83 struct ofw_bus_devinfo ddi_obdinfo; 84 struct resource_list ddi_rl; 85}; 86 87struct dma_softc { 88 struct lsi64854_softc sc_lsi64854; /* base device */ 89 int sc_ign; 90 int sc_slot; 91}; 92 93static devclass_t dma_devclass; 94 95static device_probe_t dma_probe; 96static device_attach_t dma_attach; 97static bus_print_child_t dma_print_child; 98static bus_probe_nomatch_t dma_probe_nomatch; 99static bus_get_resource_list_t dma_get_resource_list; 100static ofw_bus_get_devinfo_t dma_get_devinfo; 101 102static struct dma_devinfo *dma_setup_dinfo(device_t, struct dma_softc *, 103 phandle_t); 104static void dma_destroy_dinfo(struct dma_devinfo *); 105static int dma_print_res(struct dma_devinfo *); 106 107static device_method_t dma_methods[] = { 108 /* Device interface */ 109 DEVMETHOD(device_probe, dma_probe), 110 DEVMETHOD(device_attach, dma_attach), 111 DEVMETHOD(device_shutdown, bus_generic_shutdown), 112 DEVMETHOD(device_suspend, bus_generic_suspend), 113 DEVMETHOD(device_resume, bus_generic_resume), 114 115 /* Bus interface */ 116 DEVMETHOD(bus_print_child, dma_print_child), 117 DEVMETHOD(bus_probe_nomatch, dma_probe_nomatch), 118 DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource), 119 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 120 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 121 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource), 122 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 123 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 124 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 125 DEVMETHOD(bus_get_resource_list, dma_get_resource_list), 126 DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str), 127 128 /* ofw_bus interface */ 129 DEVMETHOD(ofw_bus_get_devinfo, dma_get_devinfo), 130 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), 131 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), 132 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), 133 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), 134 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), 135 136 KOBJMETHOD_END 137}; 138 139static driver_t dma_driver = { 140 "dma", 141 dma_methods, 142 sizeof(struct dma_softc), 143}; 144 145/* 146 * The probe order is handled by sbus(4) as we don't want the variants 147 * with children to be attached earlier than the stand-alone controllers 148 * in order to generally preserve the OFW device tree order. 149 */ 150EARLY_DRIVER_MODULE(dma, sbus, dma_driver, dma_devclass, 0, 0, 151 BUS_PASS_DEFAULT); 152MODULE_DEPEND(dma, sbus, 1, 1, 1); 153MODULE_VERSION(dma, 1); 154 155static int 156dma_probe(device_t dev) 157{ 158 const char *name; 159 160 name = ofw_bus_get_name(dev); 161 if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0 || 162 strcmp(name, "ledma") == 0) { 163 device_set_desc_copy(dev, name); 164 return (0); 165 } 166 return (ENXIO); 167} 168 169static int 170dma_attach(device_t dev) 171{ 172 struct dma_softc *dsc; 173 struct lsi64854_softc *lsc; 174 struct dma_devinfo *ddi; 175 device_t cdev; 176 const char *name; 177 char *cabletype; 178 uint32_t csr; 179 phandle_t child, node; 180 int error, i; 181 182 dsc = device_get_softc(dev); 183 lsc = &dsc->sc_lsi64854; 184 185 name = ofw_bus_get_name(dev); 186 node = ofw_bus_get_node(dev); 187 dsc->sc_ign = sbus_get_ign(dev); 188 dsc->sc_slot = sbus_get_slot(dev); 189 190 i = 0; 191 lsc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, 192 RF_ACTIVE); 193 if (lsc->sc_res == NULL) { 194 device_printf(dev, "cannot allocate resources\n"); 195 return (ENXIO); 196 } 197 198 if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0) 199 lsc->sc_channel = L64854_CHANNEL_SCSI; 200 else if (strcmp(name, "ledma") == 0) { 201 /* 202 * Check to see which cable type is currently active and 203 * set the appropriate bit in the ledma csr so that it 204 * gets used. If we didn't netboot, the PROM won't have 205 * the "cable-selection" property; default to TP and then 206 * the user can change it via a "media" option to ifconfig. 207 */ 208 csr = L64854_GCSR(lsc); 209 if ((OF_getprop_alloc(node, "cable-selection", 1, 210 (void **)&cabletype)) == -1) { 211 /* assume TP if nothing there */ 212 csr |= E_TP_AUI; 213 } else { 214 if (strcmp(cabletype, "aui") == 0) 215 csr &= ~E_TP_AUI; 216 else 217 csr |= E_TP_AUI; 218 free(cabletype, M_OFWPROP); 219 } 220 L64854_SCSR(lsc, csr); 221 DELAY(20000); /* manual says we need a 20ms delay */ 222 lsc->sc_channel = L64854_CHANNEL_ENET; 223 } else { 224 device_printf(dev, "unsupported DMA channel\n"); 225 error = ENXIO; 226 goto fail_lres; 227 } 228 229 error = bus_dma_tag_create( 230 bus_get_dma_tag(dev), /* parent */ 231 1, 0, /* alignment, boundary */ 232 BUS_SPACE_MAXADDR, /* lowaddr */ 233 BUS_SPACE_MAXADDR, /* highaddr */ 234 NULL, NULL, /* filter, filterarg */ 235 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 236 0, /* nsegments */ 237 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 238 0, /* flags */ 239 NULL, NULL, /* no locking */ 240 &lsc->sc_parent_dmat); 241 if (error != 0) { 242 device_printf(dev, "cannot allocate parent DMA tag\n"); 243 goto fail_lres; 244 } 245 246 i = sbus_get_burstsz(dev); 247 lsc->sc_burst = (i & SBUS_BURST_32) ? 32 : 248 (i & SBUS_BURST_16) ? 16 : 0; 249 lsc->sc_dev = dev; 250 251 /* Attach children. */ 252 i = 0; 253 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 254 if ((ddi = dma_setup_dinfo(dev, dsc, child)) == NULL) 255 continue; 256 if (i != 0) { 257 device_printf(dev, 258 "<%s>: only one child per DMA channel supported\n", 259 ddi->ddi_obdinfo.obd_name); 260 dma_destroy_dinfo(ddi); 261 continue; 262 } 263 if ((cdev = device_add_child(dev, NULL, -1)) == NULL) { 264 device_printf(dev, "<%s>: device_add_child failed\n", 265 ddi->ddi_obdinfo.obd_name); 266 dma_destroy_dinfo(ddi); 267 continue; 268 } 269 device_set_ivars(cdev, ddi); 270 i++; 271 } 272 return (bus_generic_attach(dev)); 273 274 fail_lres: 275 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(lsc->sc_res), 276 lsc->sc_res); 277 return (error); 278} 279 280static struct dma_devinfo * 281dma_setup_dinfo(device_t dev, struct dma_softc *dsc, phandle_t node) 282{ 283 struct dma_devinfo *ddi; 284 struct sbus_regs *reg; 285 uint32_t base, iv, *intr; 286 int i, nreg, nintr, slot, rslot; 287 288 ddi = malloc(sizeof(*ddi), M_DEVBUF, M_WAITOK | M_ZERO); 289 if (ofw_bus_gen_setup_devinfo(&ddi->ddi_obdinfo, node) != 0) { 290 free(ddi, M_DEVBUF); 291 return (NULL); 292 } 293 resource_list_init(&ddi->ddi_rl); 294 slot = -1; 295 nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)®); 296 if (nreg == -1) { 297 device_printf(dev, "<%s>: incomplete\n", 298 ddi->ddi_obdinfo.obd_name); 299 goto fail; 300 } 301 for (i = 0; i < nreg; i++) { 302 base = reg[i].sbr_offset; 303 if (SBUS_ABS(base)) { 304 rslot = SBUS_ABS_TO_SLOT(base); 305 base = SBUS_ABS_TO_OFFSET(base); 306 } else 307 rslot = reg[i].sbr_slot; 308 if (slot != -1 && slot != rslot) { 309 device_printf(dev, "<%s>: multiple slots\n", 310 ddi->ddi_obdinfo.obd_name); 311 free(reg, M_OFWPROP); 312 goto fail; 313 } 314 slot = rslot; 315 316 resource_list_add(&ddi->ddi_rl, SYS_RES_MEMORY, i, base, 317 base + reg[i].sbr_size, reg[i].sbr_size); 318 } 319 free(reg, M_OFWPROP); 320 if (slot != dsc->sc_slot) { 321 device_printf(dev, "<%s>: parent and child slot do not match\n", 322 ddi->ddi_obdinfo.obd_name); 323 goto fail; 324 } 325 326 /* 327 * The `interrupts' property contains the SBus interrupt level. 328 */ 329 nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intr), 330 (void **)&intr); 331 if (nintr != -1) { 332 for (i = 0; i < nintr; i++) { 333 iv = intr[i]; 334 /* 335 * SBus card devices need the slot number encoded into 336 * the vector as this is generally not done. 337 */ 338 if ((iv & INTMAP_OBIO_MASK) == 0) 339 iv |= slot << 3; 340 /* Set the IGN as appropriate. */ 341 iv |= dsc->sc_ign << INTMAP_IGN_SHIFT; 342 resource_list_add(&ddi->ddi_rl, SYS_RES_IRQ, i, 343 iv, iv, 1); 344 } 345 free(intr, M_OFWPROP); 346 } 347 return (ddi); 348 349 fail: 350 dma_destroy_dinfo(ddi); 351 return (NULL); 352} 353 354static void 355dma_destroy_dinfo(struct dma_devinfo *dinfo) 356{ 357 358 resource_list_free(&dinfo->ddi_rl); 359 ofw_bus_gen_destroy_devinfo(&dinfo->ddi_obdinfo); 360 free(dinfo, M_DEVBUF); 361} 362 363static int 364dma_print_child(device_t dev, device_t child) 365{ 366 int rv; 367 368 rv = bus_print_child_header(dev, child); 369 rv += dma_print_res(device_get_ivars(child)); 370 rv += bus_print_child_footer(dev, child); 371 return (rv); 372} 373 374static void 375dma_probe_nomatch(device_t dev, device_t child) 376{ 377 const char *type; 378 379 device_printf(dev, "<%s>", ofw_bus_get_name(child)); 380 dma_print_res(device_get_ivars(child)); 381 type = ofw_bus_get_type(child); 382 printf(" type %s (no driver attached)\n", 383 type != NULL ? type : "unknown"); 384} 385 386static struct resource_list * 387dma_get_resource_list(device_t dev, device_t child) 388{ 389 struct dma_devinfo *ddi; 390 391 ddi = device_get_ivars(child); 392 return (&ddi->ddi_rl); 393} 394 395static const struct ofw_bus_devinfo * 396dma_get_devinfo(device_t bus, device_t child) 397{ 398 struct dma_devinfo *ddi; 399 400 ddi = device_get_ivars(child); 401 return (&ddi->ddi_obdinfo); 402} 403 404static int 405dma_print_res(struct dma_devinfo *ddi) 406{ 407 int rv; 408 409 rv = 0; 410 rv += resource_list_print_type(&ddi->ddi_rl, "mem", SYS_RES_MEMORY, 411 "%#lx"); 412 rv += resource_list_print_type(&ddi->ddi_rl, "irq", SYS_RES_IRQ, "%ld"); 413 return (rv); 414} 415