1139825Simp/*- 286231Stmm * Copyright (c) 1999, 2000 Matthew R. Green 3117119Stmm * Copyright (c) 2001 - 2003 by Thomas Moestl <tmm@FreeBSD.org> 4287726Smarius * Copyright (c) 2005 - 2015 by Marius Strobl <marius@FreeBSD.org> 586231Stmm * All rights reserved. 686231Stmm * 786231Stmm * Redistribution and use in source and binary forms, with or without 886231Stmm * modification, are permitted provided that the following conditions 986231Stmm * are met: 1086231Stmm * 1. Redistributions of source code must retain the above copyright 1186231Stmm * notice, this list of conditions and the following disclaimer. 1286231Stmm * 2. Redistributions in binary form must reproduce the above copyright 1386231Stmm * notice, this list of conditions and the following disclaimer in the 1486231Stmm * documentation and/or other materials provided with the distribution. 1586231Stmm * 3. The name of the author may not be used to endorse or promote products 1686231Stmm * derived from this software without specific prior written permission. 1786231Stmm * 1886231Stmm * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 1986231Stmm * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 2086231Stmm * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 2186231Stmm * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 2286231Stmm * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 2386231Stmm * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 2486231Stmm * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 2586231Stmm * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 2686231Stmm * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2786231Stmm * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2886231Stmm * SUCH DAMAGE. 2986231Stmm * 3086231Stmm * from: NetBSD: psycho.c,v 1.35 2001/09/10 16:17:06 eeh Exp 3186231Stmm */ 3286231Stmm 33153057Smarius#include <sys/cdefs.h> 34153057Smarius__FBSDID("$FreeBSD: releng/10.3/sys/sparc64/pci/ofw_pci.c 292789 2015-12-27 19:37:47Z marius $"); 35153057Smarius 3686231Stmm#include "opt_ofw_pci.h" 3786231Stmm 3886231Stmm#include <sys/param.h> 3986231Stmm#include <sys/systm.h> 4086231Stmm#include <sys/bus.h> 41287726Smarius#include <sys/kernel.h> 42287726Smarius#include <sys/rman.h> 4386231Stmm 44287726Smarius#include <dev/ofw/ofw_bus.h> 45287726Smarius#include <dev/ofw/ofw_pci.h> 4686231Stmm#include <dev/ofw/openfirm.h> 4786231Stmm 48287726Smarius#include <dev/pci/pcireg.h> 49287726Smarius#include <dev/pci/pcivar.h> 50287726Smarius 51287726Smarius#include <machine/asi.h> 52115417Stmm#include <machine/bus.h> 53287726Smarius#include <machine/bus_private.h> 54287726Smarius#include <machine/cpufunc.h> 55287726Smarius#include <machine/fsr.h> 56287726Smarius#include <machine/resource.h> 5786231Stmm 58117119Stmm#include <sparc64/pci/ofw_pci.h> 59117119Stmm 60292789Smarius/* XXX */ 61292789Smariusextern struct bus_space_tag nexus_bustag; 62292789Smarius 63287726Smariusint 64287726Smariusofw_pci_attach_common(device_t dev, bus_dma_tag_t dmat, u_long iosize, 65287726Smarius u_long memsize) 66287726Smarius{ 67287726Smarius struct ofw_pci_softc *sc; 68287726Smarius struct ofw_pci_ranges *range; 69287726Smarius phandle_t node; 70287726Smarius uint32_t prop_array[2]; 71287726Smarius u_int i, j, nrange; 7286231Stmm 73287726Smarius sc = device_get_softc(dev); 74287726Smarius node = ofw_bus_get_node(dev); 75287726Smarius sc->sc_node = node; 76287726Smarius sc->sc_pci_dmat = dmat; 77117119Stmm 78287726Smarius /* Initialize memory and I/O rmans. */ 79287726Smarius sc->sc_pci_io_rman.rm_type = RMAN_ARRAY; 80287726Smarius sc->sc_pci_io_rman.rm_descr = "PCI I/O Ports"; 81287726Smarius if (rman_init(&sc->sc_pci_io_rman) != 0 || 82287726Smarius rman_manage_region(&sc->sc_pci_io_rman, 0, iosize) != 0) { 83287726Smarius device_printf(dev, "failed to set up I/O rman\n"); 84287726Smarius return (ENXIO); 85287726Smarius } 86287726Smarius sc->sc_pci_mem_rman.rm_type = RMAN_ARRAY; 87287726Smarius sc->sc_pci_mem_rman.rm_descr = "PCI Memory"; 88287726Smarius if (rman_init(&sc->sc_pci_mem_rman) != 0 || 89287726Smarius rman_manage_region(&sc->sc_pci_mem_rman, 0, memsize) != 0) { 90287726Smarius device_printf(dev, "failed to set up memory rman\n"); 91287726Smarius return (ENXIO); 92287726Smarius } 9398148Stmm 94287726Smarius /* 95287726Smarius * Find the addresses of the various bus spaces. The physical 96287726Smarius * start addresses of the ranges are the configuration, I/O and 97287726Smarius * memory handles. There should not be multiple ones of one kind. 98287726Smarius */ 99287726Smarius nrange = OF_getprop_alloc(node, "ranges", sizeof(*range), 100287726Smarius (void **)&range); 101287726Smarius for (i = 0; i < nrange; i++) { 102287726Smarius j = OFW_PCI_RANGE_CS(&range[i]); 103287726Smarius if (sc->sc_pci_bh[j] != 0) { 104287726Smarius device_printf(dev, "duplicate range for space %d\n", 105287726Smarius j); 106287726Smarius free(range, M_OFWPROP); 107287726Smarius return (EINVAL); 10898148Stmm } 109287726Smarius sc->sc_pci_bh[j] = OFW_PCI_RANGE_PHYS(&range[i]); 11098148Stmm } 111287726Smarius free(range, M_OFWPROP); 112287726Smarius 113287726Smarius /* 114287726Smarius * Make sure that the expected ranges are actually present. 115287726Smarius * The OFW_PCI_CS_MEM64 one is not currently used. 116287726Smarius */ 117287726Smarius if (sc->sc_pci_bh[OFW_PCI_CS_CONFIG] == 0) { 118287726Smarius device_printf(dev, "missing CONFIG range\n"); 119287726Smarius return (ENXIO); 120287726Smarius } 121287726Smarius if (sc->sc_pci_bh[OFW_PCI_CS_IO] == 0) { 122287726Smarius device_printf(dev, "missing IO range\n"); 123287726Smarius return (ENXIO); 124287726Smarius } 125287726Smarius if (sc->sc_pci_bh[OFW_PCI_CS_MEM32] == 0) { 126287726Smarius device_printf(dev, "missing MEM32 range\n"); 127287726Smarius return (ENXIO); 128287726Smarius } 129287726Smarius 130287726Smarius /* Allocate our tags. */ 131292789Smarius sc->sc_pci_iot = sparc64_alloc_bus_tag(NULL, &nexus_bustag, 132292789Smarius PCI_IO_BUS_SPACE, NULL); 133287726Smarius if (sc->sc_pci_iot == NULL) { 134287726Smarius device_printf(dev, "could not allocate PCI I/O tag\n"); 135287726Smarius return (ENXIO); 136287726Smarius } 137292789Smarius sc->sc_pci_cfgt = sparc64_alloc_bus_tag(NULL, &nexus_bustag, 138292789Smarius PCI_CONFIG_BUS_SPACE, NULL); 139287726Smarius if (sc->sc_pci_cfgt == NULL) { 140287726Smarius device_printf(dev, 141287726Smarius "could not allocate PCI configuration space tag\n"); 142287726Smarius return (ENXIO); 143287726Smarius } 144287726Smarius 145287726Smarius /* 146287726Smarius * Get the bus range from the firmware. 147287726Smarius */ 148287726Smarius i = OF_getprop(node, "bus-range", (void *)prop_array, 149287726Smarius sizeof(prop_array)); 150287726Smarius if (i == -1) { 151287726Smarius device_printf(dev, "could not get bus-range\n"); 152287726Smarius return (ENXIO); 153287726Smarius } 154287726Smarius if (i != sizeof(prop_array)) { 155287726Smarius device_printf(dev, "broken bus-range (%d)", i); 156287726Smarius return (EINVAL); 157287726Smarius } 158287726Smarius sc->sc_pci_secbus = prop_array[0]; 159287726Smarius sc->sc_pci_subbus = prop_array[1]; 160287726Smarius if (bootverbose != 0) 161287726Smarius device_printf(dev, "bus range %u to %u; PCI bus %d\n", 162287726Smarius sc->sc_pci_secbus, sc->sc_pci_subbus, sc->sc_pci_secbus); 163287726Smarius 164287726Smarius ofw_bus_setup_iinfo(node, &sc->sc_pci_iinfo, sizeof(ofw_pci_intr_t)); 165287726Smarius 166287726Smarius return (0); 16798148Stmm} 168287726Smarius 169287726Smariusuint32_t 170287726Smariusofw_pci_read_config_common(device_t dev, u_int regmax, u_long offset, 171287726Smarius u_int bus, u_int slot, u_int func, u_int reg, int width) 172287726Smarius{ 173287726Smarius struct ofw_pci_softc *sc; 174287726Smarius bus_space_handle_t bh; 175287726Smarius uint32_t r, wrd; 176287726Smarius int i; 177287726Smarius uint16_t shrt; 178287726Smarius uint8_t byte; 179287726Smarius 180287726Smarius sc = device_get_softc(dev); 181287726Smarius if (bus < sc->sc_pci_secbus || bus > sc->sc_pci_subbus || 182287726Smarius slot > PCI_SLOTMAX || func > PCI_FUNCMAX || reg > regmax) 183287726Smarius return (-1); 184287726Smarius 185287726Smarius bh = sc->sc_pci_bh[OFW_PCI_CS_CONFIG]; 186287726Smarius switch (width) { 187287726Smarius case 1: 188287726Smarius i = bus_space_peek_1(sc->sc_pci_cfgt, bh, offset, &byte); 189287726Smarius r = byte; 190287726Smarius break; 191287726Smarius case 2: 192287726Smarius i = bus_space_peek_2(sc->sc_pci_cfgt, bh, offset, &shrt); 193287726Smarius r = shrt; 194287726Smarius break; 195287726Smarius case 4: 196287726Smarius i = bus_space_peek_4(sc->sc_pci_cfgt, bh, offset, &wrd); 197287726Smarius r = wrd; 198287726Smarius break; 199287726Smarius default: 200287726Smarius panic("%s: bad width %d", __func__, width); 201287726Smarius /* NOTREACHED */ 202287726Smarius } 203287726Smarius 204287726Smarius if (i) { 205287726Smarius#ifdef OFW_PCI_DEBUG 206287726Smarius printf("%s: read data error reading: %d.%d.%d: 0x%x\n", 207287726Smarius __func__, bus, slot, func, reg); 208287726Smarius#endif 209287726Smarius r = -1; 210287726Smarius } 211287726Smarius return (r); 212287726Smarius} 213287726Smarius 214287726Smariusvoid 215287726Smariusofw_pci_write_config_common(device_t dev, u_int regmax, u_long offset, 216287726Smarius u_int bus, u_int slot, u_int func, u_int reg, uint32_t val, int width) 217287726Smarius{ 218287726Smarius struct ofw_pci_softc *sc; 219287726Smarius bus_space_handle_t bh; 220287726Smarius 221287726Smarius sc = device_get_softc(dev); 222287726Smarius if (bus < sc->sc_pci_secbus || bus > sc->sc_pci_subbus || 223287726Smarius slot > PCI_SLOTMAX || func > PCI_FUNCMAX || reg > regmax) 224287726Smarius return; 225287726Smarius 226287726Smarius bh = sc->sc_pci_bh[OFW_PCI_CS_CONFIG]; 227287726Smarius switch (width) { 228287726Smarius case 1: 229287726Smarius bus_space_write_1(sc->sc_pci_cfgt, bh, offset, val); 230287726Smarius break; 231287726Smarius case 2: 232287726Smarius bus_space_write_2(sc->sc_pci_cfgt, bh, offset, val); 233287726Smarius break; 234287726Smarius case 4: 235287726Smarius bus_space_write_4(sc->sc_pci_cfgt, bh, offset, val); 236287726Smarius break; 237287726Smarius default: 238287726Smarius panic("%s: bad width %d", __func__, width); 239287726Smarius /* NOTREACHED */ 240287726Smarius } 241287726Smarius} 242287726Smarius 243287726Smariusofw_pci_intr_t 244287726Smariusofw_pci_route_interrupt_common(device_t bridge, device_t dev, int pin) 245287726Smarius{ 246287726Smarius struct ofw_pci_softc *sc; 247287726Smarius struct ofw_pci_register reg; 248287726Smarius ofw_pci_intr_t pintr, mintr; 249287726Smarius 250287726Smarius sc = device_get_softc(bridge); 251287726Smarius pintr = pin; 252287726Smarius if (ofw_bus_lookup_imap(ofw_bus_get_node(dev), &sc->sc_pci_iinfo, 253287726Smarius ®, sizeof(reg), &pintr, sizeof(pintr), &mintr, sizeof(mintr), 254287726Smarius NULL) != 0) 255287726Smarius return (mintr); 256287726Smarius return (PCI_INVALID_IRQ); 257287726Smarius} 258287726Smarius 259287726Smariusvoid 260287726Smariusofw_pci_dmamap_sync_stst_order_common(void) 261287726Smarius{ 262287726Smarius static u_char buf[VIS_BLOCKSIZE] __aligned(VIS_BLOCKSIZE); 263287726Smarius register_t reg, s; 264287726Smarius 265287726Smarius s = intr_disable(); 266287726Smarius reg = rd(fprs); 267287726Smarius wr(fprs, reg | FPRS_FEF, 0); 268287726Smarius __asm __volatile("stda %%f0, [%0] %1" 269287726Smarius : : "r" (buf), "n" (ASI_BLK_COMMIT_S)); 270287726Smarius membar(Sync); 271287726Smarius wr(fprs, reg, 0); 272287726Smarius intr_restore(s); 273287726Smarius} 274287726Smarius 275287726Smariusint 276287726Smariusofw_pci_read_ivar(device_t dev, device_t child __unused, int which, 277287726Smarius uintptr_t *result) 278287726Smarius{ 279287726Smarius struct ofw_pci_softc *sc; 280287726Smarius 281287726Smarius switch (which) { 282287726Smarius case PCIB_IVAR_DOMAIN: 283287726Smarius *result = device_get_unit(dev); 284287726Smarius return (0); 285287726Smarius case PCIB_IVAR_BUS: 286287726Smarius sc = device_get_softc(dev); 287287726Smarius *result = sc->sc_pci_secbus; 288287726Smarius return (0); 289287726Smarius } 290287726Smarius return (ENOENT); 291287726Smarius} 292287726Smarius 293287726Smariusstruct resource * 294287726Smariusofw_pci_alloc_resource(device_t bus, device_t child, int type, int *rid, 295287726Smarius u_long start, u_long end, u_long count, u_int flags) 296287726Smarius{ 297287726Smarius struct ofw_pci_softc *sc; 298287726Smarius struct resource *rv; 299287726Smarius struct rman *rm; 300287726Smarius 301287726Smarius sc = device_get_softc(bus); 302287726Smarius switch (type) { 303287726Smarius case SYS_RES_IRQ: 304287726Smarius /* 305287726Smarius * XXX: Don't accept blank ranges for now, only single 306287726Smarius * interrupts. The other case should not happen with 307287726Smarius * the MI PCI code ... 308287726Smarius * XXX: This may return a resource that is out of the 309287726Smarius * range that was specified. Is this correct ...? 310287726Smarius */ 311287726Smarius if (start != end) 312287726Smarius panic("%s: XXX: interrupt range", __func__); 313287726Smarius return (bus_generic_alloc_resource(bus, child, type, rid, 314287726Smarius start, end, count, flags)); 315287726Smarius case SYS_RES_MEMORY: 316287726Smarius rm = &sc->sc_pci_mem_rman; 317287726Smarius break; 318287726Smarius case SYS_RES_IOPORT: 319287726Smarius rm = &sc->sc_pci_io_rman; 320287726Smarius break; 321287726Smarius default: 322287726Smarius return (NULL); 323287726Smarius } 324287726Smarius 325287726Smarius rv = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE, 326287726Smarius child); 327287726Smarius if (rv == NULL) 328287726Smarius return (NULL); 329287726Smarius rman_set_rid(rv, *rid); 330287726Smarius 331287726Smarius if ((flags & RF_ACTIVE) != 0 && bus_activate_resource(child, type, 332287726Smarius *rid, rv) != 0) { 333287726Smarius rman_release_resource(rv); 334287726Smarius return (NULL); 335287726Smarius } 336287726Smarius return (rv); 337287726Smarius} 338287726Smarius 339287726Smariusint 340287726Smariusofw_pci_activate_resource(device_t bus, device_t child, int type, int rid, 341287726Smarius struct resource *r) 342287726Smarius{ 343287726Smarius struct ofw_pci_softc *sc; 344287726Smarius struct bus_space_tag *tag; 345287726Smarius 346287726Smarius sc = device_get_softc(bus); 347287726Smarius switch (type) { 348287726Smarius case SYS_RES_IRQ: 349287726Smarius return (bus_generic_activate_resource(bus, child, type, rid, 350287726Smarius r)); 351287726Smarius case SYS_RES_MEMORY: 352292789Smarius tag = sparc64_alloc_bus_tag(r, &nexus_bustag, 353292789Smarius PCI_MEMORY_BUS_SPACE, NULL); 354287726Smarius if (tag == NULL) 355287726Smarius return (ENOMEM); 356287726Smarius rman_set_bustag(r, tag); 357287726Smarius rman_set_bushandle(r, sc->sc_pci_bh[OFW_PCI_CS_MEM32] + 358287726Smarius rman_get_start(r)); 359287726Smarius break; 360287726Smarius case SYS_RES_IOPORT: 361287726Smarius rman_set_bustag(r, sc->sc_pci_iot); 362287726Smarius rman_set_bushandle(r, sc->sc_pci_bh[OFW_PCI_CS_IO] + 363287726Smarius rman_get_start(r)); 364287726Smarius break; 365287726Smarius } 366287726Smarius return (rman_activate_resource(r)); 367287726Smarius} 368287726Smarius 369287726Smariusint 370287726Smariusofw_pci_adjust_resource(device_t bus, device_t child, int type, 371287726Smarius struct resource *r, u_long start, u_long end) 372287726Smarius{ 373287726Smarius struct ofw_pci_softc *sc; 374287726Smarius struct rman *rm; 375287726Smarius 376287726Smarius sc = device_get_softc(bus); 377287726Smarius switch (type) { 378287726Smarius case SYS_RES_IRQ: 379287726Smarius return (bus_generic_adjust_resource(bus, child, type, r, 380287726Smarius start, end)); 381287726Smarius case SYS_RES_MEMORY: 382287726Smarius rm = &sc->sc_pci_mem_rman; 383287726Smarius break; 384287726Smarius case SYS_RES_IOPORT: 385287726Smarius rm = &sc->sc_pci_io_rman; 386287726Smarius break; 387287726Smarius default: 388287726Smarius return (EINVAL); 389287726Smarius } 390287726Smarius if (rman_is_region_manager(r, rm) == 0) 391287726Smarius return (EINVAL); 392287726Smarius return (rman_adjust_resource(r, start, end)); 393287726Smarius} 394287726Smarius 395287726Smariusbus_dma_tag_t 396287726Smariusofw_pci_get_dma_tag(device_t bus, device_t child __unused) 397287726Smarius{ 398287726Smarius struct ofw_pci_softc *sc; 399287726Smarius 400287726Smarius sc = device_get_softc(bus); 401287726Smarius return (sc->sc_pci_dmat); 402287726Smarius} 403287726Smarius 404287726Smariusphandle_t 405287726Smariusofw_pci_get_node(device_t bus, device_t child __unused) 406287726Smarius{ 407287726Smarius struct ofw_pci_softc *sc; 408287726Smarius 409287726Smarius sc = device_get_softc(bus); 410287726Smarius /* We only have one child, the PCI bus, which needs our own node. */ 411287726Smarius return (sc->sc_node); 412287726Smarius} 413