ofw_pci.c revision 292789
1193323Sed/*- 2193323Sed * Copyright (c) 1999, 2000 Matthew R. Green 3193323Sed * Copyright (c) 2001 - 2003 by Thomas Moestl <tmm@FreeBSD.org> 4193323Sed * Copyright (c) 2005 - 2015 by Marius Strobl <marius@FreeBSD.org> 5193323Sed * All rights reserved. 6193323Sed * 7193323Sed * Redistribution and use in source and binary forms, with or without 8193323Sed * modification, are permitted provided that the following conditions 9193323Sed * are met: 10193323Sed * 1. Redistributions of source code must retain the above copyright 11193323Sed * notice, this list of conditions and the following disclaimer. 12193323Sed * 2. Redistributions in binary form must reproduce the above copyright 13193323Sed * notice, this list of conditions and the following disclaimer in the 14193323Sed * documentation and/or other materials provided with the distribution. 15193323Sed * 3. The name of the author may not be used to endorse or promote products 16193323Sed * derived from this software without specific prior written permission. 17193323Sed * 18193323Sed * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19193323Sed * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20193323Sed * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21193323Sed * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22193323Sed * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23193323Sed * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24193323Sed * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25193323Sed * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26193323Sed * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27193323Sed * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28193323Sed * SUCH DAMAGE. 29193323Sed * 30193323Sed * from: NetBSD: psycho.c,v 1.35 2001/09/10 16:17:06 eeh Exp 31193323Sed */ 32193323Sed 33198090Srdivacky#include <sys/cdefs.h> 34198090Srdivacky__FBSDID("$FreeBSD: stable/10/sys/sparc64/pci/ofw_pci.c 292789 2015-12-27 19:37:47Z marius $"); 35193323Sed 36193323Sed#include "opt_ofw_pci.h" 37193323Sed 38193323Sed#include <sys/param.h> 39193323Sed#include <sys/systm.h> 40193323Sed#include <sys/bus.h> 41193323Sed#include <sys/kernel.h> 42193323Sed#include <sys/rman.h> 43193323Sed 44193323Sed#include <dev/ofw/ofw_bus.h> 45193323Sed#include <dev/ofw/ofw_pci.h> 46193323Sed#include <dev/ofw/openfirm.h> 47193323Sed 48193323Sed#include <dev/pci/pcireg.h> 49193323Sed#include <dev/pci/pcivar.h> 50193323Sed 51193323Sed#include <machine/asi.h> 52193323Sed#include <machine/bus.h> 53193323Sed#include <machine/bus_private.h> 54193323Sed#include <machine/cpufunc.h> 55193323Sed#include <machine/fsr.h> 56193323Sed#include <machine/resource.h> 57193323Sed 58193323Sed#include <sparc64/pci/ofw_pci.h> 59193323Sed 60193323Sed/* XXX */ 61193323Sedextern struct bus_space_tag nexus_bustag; 62193323Sed 63193323Sedint 64193323Sedofw_pci_attach_common(device_t dev, bus_dma_tag_t dmat, u_long iosize, 65193323Sed u_long memsize) 66193323Sed{ 67193323Sed struct ofw_pci_softc *sc; 68193323Sed struct ofw_pci_ranges *range; 69193323Sed phandle_t node; 70193323Sed uint32_t prop_array[2]; 71193323Sed u_int i, j, nrange; 72193323Sed 73193323Sed sc = device_get_softc(dev); 74193323Sed node = ofw_bus_get_node(dev); 75198090Srdivacky sc->sc_node = node; 76198090Srdivacky sc->sc_pci_dmat = dmat; 77198090Srdivacky 78198090Srdivacky /* Initialize memory and I/O rmans. */ 79198090Srdivacky sc->sc_pci_io_rman.rm_type = RMAN_ARRAY; 80198090Srdivacky sc->sc_pci_io_rman.rm_descr = "PCI I/O Ports"; 81193323Sed if (rman_init(&sc->sc_pci_io_rman) != 0 || 82193323Sed rman_manage_region(&sc->sc_pci_io_rman, 0, iosize) != 0) { 83193323Sed device_printf(dev, "failed to set up I/O rman\n"); 84193323Sed return (ENXIO); 85193323Sed } 86193323Sed sc->sc_pci_mem_rman.rm_type = RMAN_ARRAY; 87193323Sed sc->sc_pci_mem_rman.rm_descr = "PCI Memory"; 88193323Sed if (rman_init(&sc->sc_pci_mem_rman) != 0 || 89193323Sed rman_manage_region(&sc->sc_pci_mem_rman, 0, memsize) != 0) { 90193323Sed device_printf(dev, "failed to set up memory rman\n"); 91193323Sed return (ENXIO); 92193323Sed } 93193323Sed 94193323Sed /* 95193323Sed * Find the addresses of the various bus spaces. The physical 96193323Sed * start addresses of the ranges are the configuration, I/O and 97193323Sed * memory handles. There should not be multiple ones of one kind. 98193323Sed */ 99193323Sed nrange = OF_getprop_alloc(node, "ranges", sizeof(*range), 100193323Sed (void **)&range); 101193323Sed for (i = 0; i < nrange; i++) { 102193323Sed j = OFW_PCI_RANGE_CS(&range[i]); 103193323Sed if (sc->sc_pci_bh[j] != 0) { 104193323Sed device_printf(dev, "duplicate range for space %d\n", 105193323Sed j); 106193323Sed free(range, M_OFWPROP); 107193323Sed return (EINVAL); 108193323Sed } 109198090Srdivacky sc->sc_pci_bh[j] = OFW_PCI_RANGE_PHYS(&range[i]); 110193323Sed } 111193323Sed free(range, M_OFWPROP); 112193323Sed 113193323Sed /* 114193323Sed * Make sure that the expected ranges are actually present. 115193323Sed * The OFW_PCI_CS_MEM64 one is not currently used. 116193323Sed */ 117193323Sed if (sc->sc_pci_bh[OFW_PCI_CS_CONFIG] == 0) { 118193323Sed device_printf(dev, "missing CONFIG range\n"); 119193323Sed return (ENXIO); 120193323Sed } 121193323Sed if (sc->sc_pci_bh[OFW_PCI_CS_IO] == 0) { 122193323Sed device_printf(dev, "missing IO range\n"); 123198090Srdivacky return (ENXIO); 124198090Srdivacky } 125193323Sed if (sc->sc_pci_bh[OFW_PCI_CS_MEM32] == 0) { 126193323Sed device_printf(dev, "missing MEM32 range\n"); 127193323Sed return (ENXIO); 128193323Sed } 129193323Sed 130193323Sed /* Allocate our tags. */ 131193323Sed sc->sc_pci_iot = sparc64_alloc_bus_tag(NULL, &nexus_bustag, 132193323Sed PCI_IO_BUS_SPACE, NULL); 133193323Sed if (sc->sc_pci_iot == NULL) { 134193323Sed device_printf(dev, "could not allocate PCI I/O tag\n"); 135193323Sed return (ENXIO); 136193323Sed } 137193323Sed sc->sc_pci_cfgt = sparc64_alloc_bus_tag(NULL, &nexus_bustag, 138193323Sed PCI_CONFIG_BUS_SPACE, NULL); 139193323Sed if (sc->sc_pci_cfgt == NULL) { 140198090Srdivacky device_printf(dev, 141198090Srdivacky "could not allocate PCI configuration space tag\n"); 142193323Sed return (ENXIO); 143193323Sed } 144193323Sed 145193323Sed /* 146193323Sed * Get the bus range from the firmware. 147193323Sed */ 148193323Sed i = OF_getprop(node, "bus-range", (void *)prop_array, 149193323Sed sizeof(prop_array)); 150198090Srdivacky if (i == -1) { 151193323Sed device_printf(dev, "could not get bus-range\n"); 152193323Sed return (ENXIO); 153193323Sed } 154193323Sed if (i != sizeof(prop_array)) { 155193323Sed device_printf(dev, "broken bus-range (%d)", i); 156193323Sed return (EINVAL); 157193323Sed } 158193323Sed sc->sc_pci_secbus = prop_array[0]; 159193323Sed sc->sc_pci_subbus = prop_array[1]; 160193323Sed if (bootverbose != 0) 161193323Sed device_printf(dev, "bus range %u to %u; PCI bus %d\n", 162193323Sed sc->sc_pci_secbus, sc->sc_pci_subbus, sc->sc_pci_secbus); 163193323Sed 164193323Sed ofw_bus_setup_iinfo(node, &sc->sc_pci_iinfo, sizeof(ofw_pci_intr_t)); 165193323Sed 166193323Sed return (0); 167193323Sed} 168193323Sed 169193323Seduint32_t 170193323Sedofw_pci_read_config_common(device_t dev, u_int regmax, u_long offset, 171193323Sed u_int bus, u_int slot, u_int func, u_int reg, int width) 172193323Sed{ 173193323Sed struct ofw_pci_softc *sc; 174193323Sed bus_space_handle_t bh; 175193323Sed uint32_t r, wrd; 176193323Sed int i; 177193323Sed uint16_t shrt; 178193323Sed uint8_t byte; 179193323Sed 180193323Sed sc = device_get_softc(dev); 181193323Sed if (bus < sc->sc_pci_secbus || bus > sc->sc_pci_subbus || 182193323Sed slot > PCI_SLOTMAX || func > PCI_FUNCMAX || reg > regmax) 183193323Sed return (-1); 184193323Sed 185193323Sed bh = sc->sc_pci_bh[OFW_PCI_CS_CONFIG]; 186193323Sed switch (width) { 187193323Sed case 1: 188193323Sed i = bus_space_peek_1(sc->sc_pci_cfgt, bh, offset, &byte); 189193323Sed r = byte; 190193323Sed break; 191193323Sed case 2: 192193323Sed i = bus_space_peek_2(sc->sc_pci_cfgt, bh, offset, &shrt); 193193323Sed r = shrt; 194193323Sed break; 195193323Sed case 4: 196193323Sed i = bus_space_peek_4(sc->sc_pci_cfgt, bh, offset, &wrd); 197193323Sed r = wrd; 198193323Sed break; 199193323Sed default: 200193323Sed panic("%s: bad width %d", __func__, width); 201193323Sed /* NOTREACHED */ 202193323Sed } 203193323Sed 204193323Sed if (i) { 205193323Sed#ifdef OFW_PCI_DEBUG 206193323Sed printf("%s: read data error reading: %d.%d.%d: 0x%x\n", 207193323Sed __func__, bus, slot, func, reg); 208193323Sed#endif 209193323Sed r = -1; 210 } 211 return (r); 212} 213 214void 215ofw_pci_write_config_common(device_t dev, u_int regmax, u_long offset, 216 u_int bus, u_int slot, u_int func, u_int reg, uint32_t val, int width) 217{ 218 struct ofw_pci_softc *sc; 219 bus_space_handle_t bh; 220 221 sc = device_get_softc(dev); 222 if (bus < sc->sc_pci_secbus || bus > sc->sc_pci_subbus || 223 slot > PCI_SLOTMAX || func > PCI_FUNCMAX || reg > regmax) 224 return; 225 226 bh = sc->sc_pci_bh[OFW_PCI_CS_CONFIG]; 227 switch (width) { 228 case 1: 229 bus_space_write_1(sc->sc_pci_cfgt, bh, offset, val); 230 break; 231 case 2: 232 bus_space_write_2(sc->sc_pci_cfgt, bh, offset, val); 233 break; 234 case 4: 235 bus_space_write_4(sc->sc_pci_cfgt, bh, offset, val); 236 break; 237 default: 238 panic("%s: bad width %d", __func__, width); 239 /* NOTREACHED */ 240 } 241} 242 243ofw_pci_intr_t 244ofw_pci_route_interrupt_common(device_t bridge, device_t dev, int pin) 245{ 246 struct ofw_pci_softc *sc; 247 struct ofw_pci_register reg; 248 ofw_pci_intr_t pintr, mintr; 249 250 sc = device_get_softc(bridge); 251 pintr = pin; 252 if (ofw_bus_lookup_imap(ofw_bus_get_node(dev), &sc->sc_pci_iinfo, 253 ®, sizeof(reg), &pintr, sizeof(pintr), &mintr, sizeof(mintr), 254 NULL) != 0) 255 return (mintr); 256 return (PCI_INVALID_IRQ); 257} 258 259void 260ofw_pci_dmamap_sync_stst_order_common(void) 261{ 262 static u_char buf[VIS_BLOCKSIZE] __aligned(VIS_BLOCKSIZE); 263 register_t reg, s; 264 265 s = intr_disable(); 266 reg = rd(fprs); 267 wr(fprs, reg | FPRS_FEF, 0); 268 __asm __volatile("stda %%f0, [%0] %1" 269 : : "r" (buf), "n" (ASI_BLK_COMMIT_S)); 270 membar(Sync); 271 wr(fprs, reg, 0); 272 intr_restore(s); 273} 274 275int 276ofw_pci_read_ivar(device_t dev, device_t child __unused, int which, 277 uintptr_t *result) 278{ 279 struct ofw_pci_softc *sc; 280 281 switch (which) { 282 case PCIB_IVAR_DOMAIN: 283 *result = device_get_unit(dev); 284 return (0); 285 case PCIB_IVAR_BUS: 286 sc = device_get_softc(dev); 287 *result = sc->sc_pci_secbus; 288 return (0); 289 } 290 return (ENOENT); 291} 292 293struct resource * 294ofw_pci_alloc_resource(device_t bus, device_t child, int type, int *rid, 295 u_long start, u_long end, u_long count, u_int flags) 296{ 297 struct ofw_pci_softc *sc; 298 struct resource *rv; 299 struct rman *rm; 300 301 sc = device_get_softc(bus); 302 switch (type) { 303 case SYS_RES_IRQ: 304 /* 305 * XXX: Don't accept blank ranges for now, only single 306 * interrupts. The other case should not happen with 307 * the MI PCI code ... 308 * XXX: This may return a resource that is out of the 309 * range that was specified. Is this correct ...? 310 */ 311 if (start != end) 312 panic("%s: XXX: interrupt range", __func__); 313 return (bus_generic_alloc_resource(bus, child, type, rid, 314 start, end, count, flags)); 315 case SYS_RES_MEMORY: 316 rm = &sc->sc_pci_mem_rman; 317 break; 318 case SYS_RES_IOPORT: 319 rm = &sc->sc_pci_io_rman; 320 break; 321 default: 322 return (NULL); 323 } 324 325 rv = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE, 326 child); 327 if (rv == NULL) 328 return (NULL); 329 rman_set_rid(rv, *rid); 330 331 if ((flags & RF_ACTIVE) != 0 && bus_activate_resource(child, type, 332 *rid, rv) != 0) { 333 rman_release_resource(rv); 334 return (NULL); 335 } 336 return (rv); 337} 338 339int 340ofw_pci_activate_resource(device_t bus, device_t child, int type, int rid, 341 struct resource *r) 342{ 343 struct ofw_pci_softc *sc; 344 struct bus_space_tag *tag; 345 346 sc = device_get_softc(bus); 347 switch (type) { 348 case SYS_RES_IRQ: 349 return (bus_generic_activate_resource(bus, child, type, rid, 350 r)); 351 case SYS_RES_MEMORY: 352 tag = sparc64_alloc_bus_tag(r, &nexus_bustag, 353 PCI_MEMORY_BUS_SPACE, NULL); 354 if (tag == NULL) 355 return (ENOMEM); 356 rman_set_bustag(r, tag); 357 rman_set_bushandle(r, sc->sc_pci_bh[OFW_PCI_CS_MEM32] + 358 rman_get_start(r)); 359 break; 360 case SYS_RES_IOPORT: 361 rman_set_bustag(r, sc->sc_pci_iot); 362 rman_set_bushandle(r, sc->sc_pci_bh[OFW_PCI_CS_IO] + 363 rman_get_start(r)); 364 break; 365 } 366 return (rman_activate_resource(r)); 367} 368 369int 370ofw_pci_adjust_resource(device_t bus, device_t child, int type, 371 struct resource *r, u_long start, u_long end) 372{ 373 struct ofw_pci_softc *sc; 374 struct rman *rm; 375 376 sc = device_get_softc(bus); 377 switch (type) { 378 case SYS_RES_IRQ: 379 return (bus_generic_adjust_resource(bus, child, type, r, 380 start, end)); 381 case SYS_RES_MEMORY: 382 rm = &sc->sc_pci_mem_rman; 383 break; 384 case SYS_RES_IOPORT: 385 rm = &sc->sc_pci_io_rman; 386 break; 387 default: 388 return (EINVAL); 389 } 390 if (rman_is_region_manager(r, rm) == 0) 391 return (EINVAL); 392 return (rman_adjust_resource(r, start, end)); 393} 394 395bus_dma_tag_t 396ofw_pci_get_dma_tag(device_t bus, device_t child __unused) 397{ 398 struct ofw_pci_softc *sc; 399 400 sc = device_get_softc(bus); 401 return (sc->sc_pci_dmat); 402} 403 404phandle_t 405ofw_pci_get_node(device_t bus, device_t child __unused) 406{ 407 struct ofw_pci_softc *sc; 408 409 sc = device_get_softc(bus); 410 /* We only have one child, the PCI bus, which needs our own node. */ 411 return (sc->sc_node); 412} 413