dma_sbus.c revision 200874
1146392Smarius/* $OpenBSD: dma_sbus.c,v 1.12 2005/03/03 01:41:45 miod Exp $ */ 2146392Smarius/* $NetBSD: dma_sbus.c,v 1.5 2000/07/09 20:57:42 pk Exp $ */ 3146392Smarius 4146392Smarius/*- 5146392Smarius * Copyright (c) 1998 The NetBSD Foundation, Inc. 6146392Smarius * All rights reserved. 7146392Smarius * 8146392Smarius * This code is derived from software contributed to The NetBSD Foundation 9146392Smarius * by Paul Kranenburg. 10146392Smarius * 11146392Smarius * Redistribution and use in source and binary forms, with or without 12146392Smarius * modification, are permitted provided that the following conditions 13146392Smarius * are met: 14146392Smarius * 1. Redistributions of source code must retain the above copyright 15146392Smarius * notice, this list of conditions and the following disclaimer. 16146392Smarius * 2. Redistributions in binary form must reproduce the above copyright 17146392Smarius * notice, this list of conditions and the following disclaimer in the 18146392Smarius * documentation and/or other materials provided with the distribution. 19146392Smarius * 3. All advertising materials mentioning features or use of this software 20146392Smarius * must display the following acknowledgement: 21146392Smarius * This product includes software developed by the NetBSD 22146392Smarius * Foundation, Inc. and its contributors. 23146392Smarius * 4. Neither the name of The NetBSD Foundation nor the names of its 24146392Smarius * contributors may be used to endorse or promote products derived 25146392Smarius * from this software without specific prior written permission. 26146392Smarius * 27146392Smarius * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28146392Smarius * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29146392Smarius * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30146392Smarius * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31146392Smarius * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32146392Smarius * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33146392Smarius * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34146392Smarius * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35146392Smarius * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36146392Smarius * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37146392Smarius * POSSIBILITY OF SUCH DAMAGE. 38146392Smarius */ 39146392Smarius 40146392Smarius/*- 41146392Smarius * Copyright (c) 1994 Peter Galbavy. All rights reserved. 42146392Smarius * Copyright (c) 2005 Marius Strobl <marius@FreeBSD.org>. All rights reserved. 43146392Smarius * 44146392Smarius * Redistribution and use in source and binary forms, with or without 45146392Smarius * modification, are permitted provided that the following conditions 46146392Smarius * are met: 47146392Smarius * 1. Redistributions of source code must retain the above copyright 48146392Smarius * notice, this list of conditions and the following disclaimer. 49146392Smarius * 2. Redistributions in binary form must reproduce the above copyright 50146392Smarius * notice, this list of conditions and the following disclaimer in the 51146392Smarius * documentation and/or other materials provided with the distribution. 52146392Smarius * 53146392Smarius * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 54146392Smarius * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 55146392Smarius * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 56146392Smarius * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 57146392Smarius * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 58146392Smarius * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 59146392Smarius * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 60146392Smarius * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 61146392Smarius * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 62146392Smarius * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 63146392Smarius */ 64146392Smarius 65146392Smarius#include <sys/cdefs.h> 66146392Smarius__FBSDID("$FreeBSD: head/sys/sparc64/sbus/dma_sbus.c 200874 2009-12-22 21:02:46Z marius $"); 67146392Smarius 68146392Smarius#include <sys/param.h> 69146392Smarius#include <sys/systm.h> 70146392Smarius#include <sys/bus.h> 71146392Smarius#include <sys/kernel.h> 72146392Smarius#include <sys/module.h> 73146392Smarius#include <sys/rman.h> 74146392Smarius 75146392Smarius#include <dev/ofw/ofw_bus.h> 76152684Smarius#include <dev/ofw/ofw_bus_subr.h> 77146392Smarius#include <dev/ofw/openfirm.h> 78146392Smarius 79146392Smarius#include <machine/bus.h> 80146392Smarius#include <machine/bus_common.h> 81146392Smarius#include <machine/resource.h> 82146392Smarius 83146392Smarius#include <sparc64/sbus/lsi64854reg.h> 84146392Smarius#include <sparc64/sbus/lsi64854var.h> 85146392Smarius#include <sparc64/sbus/ofw_sbus.h> 86146392Smarius#include <sparc64/sbus/sbusreg.h> 87146392Smarius#include <sparc64/sbus/sbusvar.h> 88146392Smarius 89146392Smariusstruct dma_devinfo { 90152684Smarius struct ofw_bus_devinfo ddi_obdinfo; 91146392Smarius struct resource_list ddi_rl; 92146392Smarius}; 93146392Smarius 94146392Smariusstruct dma_softc { 95146392Smarius struct lsi64854_softc sc_lsi64854; /* base device */ 96146392Smarius int sc_ign; 97146392Smarius int sc_slot; 98146392Smarius}; 99146392Smarius 100146392Smariusstatic devclass_t dma_devclass; 101146392Smarius 102146392Smariusstatic device_probe_t dma_probe; 103146392Smariusstatic device_attach_t dma_attach; 104146392Smariusstatic bus_print_child_t dma_print_child; 105146392Smariusstatic bus_probe_nomatch_t dma_probe_nomatch; 106146392Smariusstatic bus_get_resource_list_t dma_get_resource_list; 107152684Smariusstatic ofw_bus_get_devinfo_t dma_get_devinfo; 108146392Smarius 109152684Smariusstatic struct dma_devinfo *dma_setup_dinfo(device_t, struct dma_softc *, 110152684Smarius phandle_t); 111146392Smariusstatic void dma_destroy_dinfo(struct dma_devinfo *); 112152684Smariusstatic int dma_print_res(struct dma_devinfo *); 113146392Smarius 114146392Smariusstatic device_method_t dma_methods[] = { 115166147Smarius /* Device interface */ 116146392Smarius DEVMETHOD(device_probe, dma_probe), 117146392Smarius DEVMETHOD(device_attach, dma_attach), 118154870Smarius DEVMETHOD(device_shutdown, bus_generic_shutdown), 119154870Smarius DEVMETHOD(device_suspend, bus_generic_suspend), 120154870Smarius DEVMETHOD(device_resume, bus_generic_resume), 121146392Smarius 122146392Smarius /* Bus interface */ 123146392Smarius DEVMETHOD(bus_print_child, dma_print_child), 124146392Smarius DEVMETHOD(bus_probe_nomatch, dma_probe_nomatch), 125146392Smarius DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource), 126146392Smarius DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 127146392Smarius DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 128190099Smarius DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource), 129190099Smarius DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 130190099Smarius DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 131190099Smarius DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 132146392Smarius DEVMETHOD(bus_get_resource_list, dma_get_resource_list), 133190114Smarius DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str), 134146392Smarius 135146392Smarius /* ofw_bus interface */ 136152684Smarius DEVMETHOD(ofw_bus_get_devinfo, dma_get_devinfo), 137152684Smarius DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), 138152684Smarius DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), 139152684Smarius DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), 140152684Smarius DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), 141152684Smarius DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), 142146392Smarius 143190099Smarius KOBJMETHOD_END 144146392Smarius}; 145146392Smarius 146146392Smariusstatic driver_t dma_driver = { 147146392Smarius "dma", 148146392Smarius dma_methods, 149146392Smarius sizeof(struct dma_softc), 150146392Smarius}; 151146392Smarius 152200874Smarius/* 153200874Smarius * The probe order is handled by sbus(4) as we don't want the variants 154200874Smarius * with children to be attached earlier than the stand-alone controllers 155200874Smarius * in order to generally preserve the OFW device tree order. 156200874Smarius */ 157200874SmariusEARLY_DRIVER_MODULE(dma, sbus, dma_driver, dma_devclass, 0, 0, 158200874Smarius BUS_PASS_DEFAULT); 159182062SmariusMODULE_DEPEND(dma, sbus, 1, 1, 1); 160182062SmariusMODULE_VERSION(dma, 1); 161146392Smarius 162146392Smariusstatic int 163146392Smariusdma_probe(device_t dev) 164146392Smarius{ 165146392Smarius const char *name; 166146392Smarius 167146392Smarius name = ofw_bus_get_name(dev); 168146392Smarius if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0 || 169146392Smarius strcmp(name, "ledma") == 0) { 170166147Smarius device_set_desc_copy(dev, name); 171166147Smarius return (0); 172146392Smarius } 173166147Smarius return (ENXIO); 174146392Smarius} 175146392Smarius 176146392Smariusstatic int 177146392Smariusdma_attach(device_t dev) 178146392Smarius{ 179146392Smarius struct dma_softc *dsc; 180146392Smarius struct lsi64854_softc *lsc; 181146392Smarius struct dma_devinfo *ddi; 182146392Smarius device_t cdev; 183146392Smarius const char *name; 184152684Smarius char *cabletype; 185146392Smarius uint32_t csr; 186146392Smarius phandle_t child, node; 187182876Smarius int error, i; 188146392Smarius 189146392Smarius dsc = device_get_softc(dev); 190146392Smarius lsc = &dsc->sc_lsi64854; 191146392Smarius 192146392Smarius name = ofw_bus_get_name(dev); 193146392Smarius node = ofw_bus_get_node(dev); 194146392Smarius dsc->sc_ign = sbus_get_ign(dev); 195146392Smarius dsc->sc_slot = sbus_get_slot(dev); 196146392Smarius 197182876Smarius i = 0; 198182876Smarius lsc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, 199146392Smarius RF_ACTIVE); 200146392Smarius if (lsc->sc_res == NULL) { 201146392Smarius device_printf(dev, "cannot allocate resources\n"); 202146392Smarius return (ENXIO); 203146392Smarius } 204146392Smarius 205146392Smarius if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0) 206146392Smarius lsc->sc_channel = L64854_CHANNEL_SCSI; 207146392Smarius else if (strcmp(name, "ledma") == 0) { 208146392Smarius /* 209146392Smarius * Check to see which cable type is currently active and 210146392Smarius * set the appropriate bit in the ledma csr so that it 211146392Smarius * gets used. If we didn't netboot, the PROM won't have 212146392Smarius * the "cable-selection" property; default to TP and then 213146392Smarius * the user can change it via a "media" option to ifconfig. 214146392Smarius */ 215146392Smarius csr = L64854_GCSR(lsc); 216146392Smarius if ((OF_getprop_alloc(node, "cable-selection", 1, 217146392Smarius (void **)&cabletype)) == -1) { 218146392Smarius /* assume TP if nothing there */ 219146392Smarius csr |= E_TP_AUI; 220146392Smarius } else { 221146392Smarius if (strcmp(cabletype, "aui") == 0) 222146392Smarius csr &= ~E_TP_AUI; 223146392Smarius else 224146392Smarius csr |= E_TP_AUI; 225146392Smarius free(cabletype, M_OFWPROP); 226146392Smarius } 227146392Smarius L64854_SCSR(lsc, csr); 228146392Smarius DELAY(20000); /* manual says we need a 20ms delay */ 229146392Smarius lsc->sc_channel = L64854_CHANNEL_ENET; 230146392Smarius } else { 231146392Smarius device_printf(dev, "unsupported DMA channel\n"); 232146392Smarius error = ENXIO; 233146392Smarius goto fail_lres; 234146392Smarius } 235146392Smarius 236146392Smarius error = bus_dma_tag_create( 237166147Smarius bus_get_dma_tag(dev), /* parent */ 238166147Smarius 1, 0, /* alignment, boundary */ 239146392Smarius BUS_SPACE_MAXADDR, /* lowaddr */ 240146392Smarius BUS_SPACE_MAXADDR, /* highaddr */ 241146392Smarius NULL, NULL, /* filter, filterarg */ 242146392Smarius BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 243146392Smarius 0, /* nsegments */ 244146392Smarius BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 245146392Smarius 0, /* flags */ 246146392Smarius NULL, NULL, /* no locking */ 247146392Smarius &lsc->sc_parent_dmat); 248146392Smarius if (error != 0) { 249146392Smarius device_printf(dev, "cannot allocate parent DMA tag\n"); 250146392Smarius goto fail_lres; 251146392Smarius } 252146392Smarius 253182876Smarius i = sbus_get_burstsz(dev); 254182876Smarius lsc->sc_burst = (i & SBUS_BURST_32) ? 32 : 255182876Smarius (i & SBUS_BURST_16) ? 16 : 0; 256146392Smarius lsc->sc_dev = dev; 257146392Smarius 258146392Smarius /* Attach children. */ 259182876Smarius i = 0; 260146392Smarius for (child = OF_child(node); child != 0; child = OF_peer(child)) { 261152684Smarius if ((ddi = dma_setup_dinfo(dev, dsc, child)) == NULL) 262146392Smarius continue; 263182876Smarius if (i != 0) { 264152684Smarius device_printf(dev, 265152684Smarius "<%s>: only one child per DMA channel supported\n", 266152684Smarius ddi->ddi_obdinfo.obd_name); 267146392Smarius dma_destroy_dinfo(ddi); 268146392Smarius continue; 269146392Smarius } 270146392Smarius if ((cdev = device_add_child(dev, NULL, -1)) == NULL) { 271146392Smarius device_printf(dev, "<%s>: device_add_child failed\n", 272152684Smarius ddi->ddi_obdinfo.obd_name); 273146392Smarius dma_destroy_dinfo(ddi); 274146392Smarius continue; 275146392Smarius } 276146392Smarius device_set_ivars(cdev, ddi); 277182876Smarius i++; 278146392Smarius } 279152684Smarius return (bus_generic_attach(dev)); 280146392Smarius 281146392Smarius fail_lres: 282182876Smarius bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(lsc->sc_res), 283182876Smarius lsc->sc_res); 284146392Smarius return (error); 285146392Smarius} 286146392Smarius 287146392Smariusstatic struct dma_devinfo * 288152684Smariusdma_setup_dinfo(device_t dev, struct dma_softc *dsc, phandle_t node) 289146392Smarius{ 290146392Smarius struct dma_devinfo *ddi; 291146392Smarius struct sbus_regs *reg; 292146392Smarius uint32_t base, iv, *intr; 293146392Smarius int i, nreg, nintr, slot, rslot; 294146392Smarius 295146392Smarius ddi = malloc(sizeof(*ddi), M_DEVBUF, M_WAITOK | M_ZERO); 296152684Smarius if (ofw_bus_gen_setup_devinfo(&ddi->ddi_obdinfo, node) != 0) { 297152684Smarius free(ddi, M_DEVBUF); 298146392Smarius return (NULL); 299152684Smarius } 300146392Smarius resource_list_init(&ddi->ddi_rl); 301146392Smarius slot = -1; 302146392Smarius nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)®); 303146392Smarius if (nreg == -1) { 304152684Smarius device_printf(dev, "<%s>: incomplete\n", 305152684Smarius ddi->ddi_obdinfo.obd_name); 306152684Smarius goto fail; 307146392Smarius } 308146392Smarius for (i = 0; i < nreg; i++) { 309146392Smarius base = reg[i].sbr_offset; 310146392Smarius if (SBUS_ABS(base)) { 311146392Smarius rslot = SBUS_ABS_TO_SLOT(base); 312146392Smarius base = SBUS_ABS_TO_OFFSET(base); 313146392Smarius } else 314146392Smarius rslot = reg[i].sbr_slot; 315146392Smarius if (slot != -1 && slot != rslot) { 316152684Smarius device_printf(dev, "<%s>: multiple slots\n", 317152684Smarius ddi->ddi_obdinfo.obd_name); 318146392Smarius free(reg, M_OFWPROP); 319152684Smarius goto fail; 320146392Smarius } 321146392Smarius slot = rslot; 322146392Smarius 323146392Smarius resource_list_add(&ddi->ddi_rl, SYS_RES_MEMORY, i, base, 324146392Smarius base + reg[i].sbr_size, reg[i].sbr_size); 325146392Smarius } 326146392Smarius free(reg, M_OFWPROP); 327146392Smarius if (slot != dsc->sc_slot) { 328146392Smarius device_printf(dev, "<%s>: parent and child slot do not match\n", 329152684Smarius ddi->ddi_obdinfo.obd_name); 330152684Smarius goto fail; 331146392Smarius } 332146392Smarius 333146392Smarius /* 334146392Smarius * The `interrupts' property contains the SBus interrupt level. 335146392Smarius */ 336146392Smarius nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intr), 337146392Smarius (void **)&intr); 338146392Smarius if (nintr != -1) { 339146392Smarius for (i = 0; i < nintr; i++) { 340146392Smarius iv = intr[i]; 341146392Smarius /* 342146392Smarius * SBus card devices need the slot number encoded into 343146392Smarius * the vector as this is generally not done. 344146392Smarius */ 345146392Smarius if ((iv & INTMAP_OBIO_MASK) == 0) 346146392Smarius iv |= slot << 3; 347146392Smarius /* Set the IGN as appropriate. */ 348146392Smarius iv |= dsc->sc_ign << INTMAP_IGN_SHIFT; 349146392Smarius resource_list_add(&ddi->ddi_rl, SYS_RES_IRQ, i, 350146392Smarius iv, iv, 1); 351146392Smarius } 352146392Smarius free(intr, M_OFWPROP); 353146392Smarius } 354146392Smarius return (ddi); 355152684Smarius 356152684Smarius fail: 357152684Smarius dma_destroy_dinfo(ddi); 358152684Smarius return (NULL); 359146392Smarius} 360146392Smarius 361146392Smariusstatic void 362146392Smariusdma_destroy_dinfo(struct dma_devinfo *dinfo) 363146392Smarius{ 364146392Smarius 365146392Smarius resource_list_free(&dinfo->ddi_rl); 366152684Smarius ofw_bus_gen_destroy_devinfo(&dinfo->ddi_obdinfo); 367146392Smarius free(dinfo, M_DEVBUF); 368146392Smarius} 369146392Smarius 370146392Smariusstatic int 371146392Smariusdma_print_child(device_t dev, device_t child) 372146392Smarius{ 373146392Smarius int rv; 374146392Smarius 375146392Smarius rv = bus_print_child_header(dev, child); 376152684Smarius rv += dma_print_res(device_get_ivars(child)); 377146392Smarius rv += bus_print_child_footer(dev, child); 378146392Smarius return (rv); 379146392Smarius} 380146392Smarius 381146392Smariusstatic void 382146392Smariusdma_probe_nomatch(device_t dev, device_t child) 383146392Smarius{ 384152684Smarius const char *type; 385146392Smarius 386152684Smarius device_printf(dev, "<%s>", ofw_bus_get_name(child)); 387152684Smarius dma_print_res(device_get_ivars(child)); 388152684Smarius type = ofw_bus_get_type(child); 389152684Smarius printf(" type %s (no driver attached)\n", 390152684Smarius type != NULL ? type : "unknown"); 391146392Smarius} 392146392Smarius 393146392Smariusstatic struct resource_list * 394146392Smariusdma_get_resource_list(device_t dev, device_t child) 395146392Smarius{ 396146392Smarius struct dma_devinfo *ddi; 397146392Smarius 398146392Smarius ddi = device_get_ivars(child); 399146392Smarius return (&ddi->ddi_rl); 400146392Smarius} 401146392Smarius 402152684Smariusstatic const struct ofw_bus_devinfo * 403152684Smariusdma_get_devinfo(device_t bus, device_t child) 404146392Smarius{ 405152684Smarius struct dma_devinfo *ddi; 406146392Smarius 407152684Smarius ddi = device_get_ivars(child); 408152684Smarius return (&ddi->ddi_obdinfo); 409146392Smarius} 410146392Smarius 411152684Smariusstatic int 412152684Smariusdma_print_res(struct dma_devinfo *ddi) 413146392Smarius{ 414152684Smarius int rv; 415146392Smarius 416152684Smarius rv = 0; 417152684Smarius rv += resource_list_print_type(&ddi->ddi_rl, "mem", SYS_RES_MEMORY, 418152684Smarius "%#lx"); 419152684Smarius rv += resource_list_print_type(&ddi->ddi_rl, "irq", SYS_RES_IRQ, "%ld"); 420152684Smarius return (rv); 421146392Smarius} 422