grackle.c revision 183882
1139825Simp/*- 2116964Sgrehan * Copyright 2003 by Peter Grehan. All rights reserved. 3116964Sgrehan * 4116964Sgrehan * Redistribution and use in source and binary forms, with or without 5116964Sgrehan * modification, are permitted provided that the following conditions 6116964Sgrehan * are met: 7116964Sgrehan * 1. Redistributions of source code must retain the above copyright 8116964Sgrehan * notice, this list of conditions and the following disclaimer. 9116964Sgrehan * 2. Redistributions in binary form must reproduce the above copyright 10116964Sgrehan * notice, this list of conditions and the following disclaimer in the 11116964Sgrehan * documentation and/or other materials provided with the distribution. 12116964Sgrehan * 3. The name of the author may not be used to endorse or promote products 13116964Sgrehan * derived from this software without specific prior written permission. 14116964Sgrehan * 15116964Sgrehan * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16116964Sgrehan * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17116964Sgrehan * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18116964Sgrehan * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19116964Sgrehan * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 20116964Sgrehan * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 21116964Sgrehan * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 22116964Sgrehan * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 23116964Sgrehan * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24116964Sgrehan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25116964Sgrehan * SUCH DAMAGE. 26116964Sgrehan * 27116964Sgrehan * $FreeBSD: head/sys/powerpc/powermac/grackle.c 183882 2008-10-14 14:54:14Z nwhitehorn $ 28116964Sgrehan */ 29116964Sgrehan 30116964Sgrehan#include <sys/param.h> 31116964Sgrehan#include <sys/systm.h> 32131102Sgrehan#include <sys/module.h> 33116964Sgrehan#include <sys/bus.h> 34116964Sgrehan#include <sys/conf.h> 35116964Sgrehan#include <sys/kernel.h> 36116964Sgrehan 37116964Sgrehan#include <dev/ofw/openfirm.h> 38116964Sgrehan#include <dev/ofw/ofw_pci.h> 39183882Snwhitehorn#include <dev/ofw/ofw_bus.h> 40116964Sgrehan 41116964Sgrehan#include <dev/pci/pcivar.h> 42116964Sgrehan#include <dev/pci/pcireg.h> 43116964Sgrehan 44116964Sgrehan#include <machine/bus.h> 45116964Sgrehan#include <machine/md_var.h> 46174782Smarcel#include <machine/pio.h> 47116964Sgrehan#include <machine/resource.h> 48116964Sgrehan 49116964Sgrehan#include <sys/rman.h> 50116964Sgrehan 51116964Sgrehan#include <powerpc/powermac/gracklevar.h> 52116964Sgrehan 53116964Sgrehan#include <vm/vm.h> 54116964Sgrehan#include <vm/pmap.h> 55116964Sgrehan 56116964Sgrehan#include "pcib_if.h" 57116964Sgrehan 58125688Sgrehanint badaddr(void *, size_t); /* XXX */ 59125688Sgrehan 60116964Sgrehan/* 61116964Sgrehan * Device interface. 62116964Sgrehan */ 63116964Sgrehanstatic int grackle_probe(device_t); 64116964Sgrehanstatic int grackle_attach(device_t); 65116964Sgrehan 66116964Sgrehan/* 67116964Sgrehan * Bus interface. 68116964Sgrehan */ 69116964Sgrehanstatic int grackle_read_ivar(device_t, device_t, int, 70116964Sgrehan uintptr_t *); 71116964Sgrehanstatic struct resource * grackle_alloc_resource(device_t bus, 72116964Sgrehan device_t child, int type, int *rid, u_long start, 73116964Sgrehan u_long end, u_long count, u_int flags); 74116964Sgrehanstatic int grackle_release_resource(device_t bus, device_t child, 75116964Sgrehan int type, int rid, struct resource *res); 76116964Sgrehanstatic int grackle_activate_resource(device_t bus, device_t child, 77116964Sgrehan int type, int rid, struct resource *res); 78125688Sgrehanstatic int grackle_deactivate_resource(device_t bus, 79125688Sgrehan device_t child, int type, int rid, 80116964Sgrehan struct resource *res); 81116964Sgrehan 82116964Sgrehan 83116964Sgrehan/* 84116964Sgrehan * pcib interface. 85116964Sgrehan */ 86116964Sgrehanstatic int grackle_maxslots(device_t); 87116964Sgrehanstatic u_int32_t grackle_read_config(device_t, u_int, u_int, u_int, 88116964Sgrehan u_int, int); 89116964Sgrehanstatic void grackle_write_config(device_t, u_int, u_int, u_int, 90116964Sgrehan u_int, u_int32_t, int); 91116964Sgrehanstatic int grackle_route_interrupt(device_t, device_t, int); 92116964Sgrehan 93116964Sgrehan/* 94183882Snwhitehorn * ofw_bus interface 95183882Snwhitehorn */ 96183882Snwhitehornstatic phandle_t grackle_get_node(device_t bus, device_t dev); 97183882Snwhitehorn 98183882Snwhitehorn/* 99116964Sgrehan * Local routines. 100116964Sgrehan */ 101116964Sgrehanstatic int grackle_enable_config(struct grackle_softc *, u_int, 102116964Sgrehan u_int, u_int, u_int); 103116964Sgrehanstatic void grackle_disable_config(struct grackle_softc *); 104116964Sgrehan 105116964Sgrehan/* 106116964Sgrehan * Driver methods. 107116964Sgrehan */ 108116964Sgrehanstatic device_method_t grackle_methods[] = { 109116964Sgrehan /* Device interface */ 110116964Sgrehan DEVMETHOD(device_probe, grackle_probe), 111116964Sgrehan DEVMETHOD(device_attach, grackle_attach), 112116964Sgrehan 113116964Sgrehan /* Bus interface */ 114116964Sgrehan DEVMETHOD(bus_print_child, bus_generic_print_child), 115116964Sgrehan DEVMETHOD(bus_read_ivar, grackle_read_ivar), 116116964Sgrehan DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 117116964Sgrehan DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 118116964Sgrehan DEVMETHOD(bus_alloc_resource, grackle_alloc_resource), 119116964Sgrehan DEVMETHOD(bus_release_resource, grackle_release_resource), 120116964Sgrehan DEVMETHOD(bus_activate_resource, grackle_activate_resource), 121116964Sgrehan DEVMETHOD(bus_deactivate_resource, grackle_deactivate_resource), 122116964Sgrehan 123116964Sgrehan /* pcib interface */ 124116964Sgrehan DEVMETHOD(pcib_maxslots, grackle_maxslots), 125116964Sgrehan DEVMETHOD(pcib_read_config, grackle_read_config), 126116964Sgrehan DEVMETHOD(pcib_write_config, grackle_write_config), 127116964Sgrehan DEVMETHOD(pcib_route_interrupt, grackle_route_interrupt), 128116964Sgrehan 129183882Snwhitehorn /* ofw_bus interface */ 130183882Snwhitehorn DEVMETHOD(ofw_bus_get_node, grackle_get_node), 131183882Snwhitehorn 132116964Sgrehan { 0, 0 } 133116964Sgrehan}; 134116964Sgrehan 135116964Sgrehanstatic driver_t grackle_driver = { 136116964Sgrehan "pcib", 137116964Sgrehan grackle_methods, 138116964Sgrehan sizeof(struct grackle_softc) 139116964Sgrehan}; 140116964Sgrehan 141116964Sgrehanstatic devclass_t grackle_devclass; 142116964Sgrehan 143116964SgrehanDRIVER_MODULE(grackle, nexus, grackle_driver, grackle_devclass, 0, 0); 144116964Sgrehan 145116964Sgrehanstatic int 146116964Sgrehangrackle_probe(device_t dev) 147116964Sgrehan{ 148183882Snwhitehorn const char *type, *compatible; 149116964Sgrehan 150183882Snwhitehorn type = ofw_bus_get_type(dev); 151183882Snwhitehorn compatible = ofw_bus_get_compat(dev); 152116964Sgrehan 153116964Sgrehan if (type == NULL || compatible == NULL) 154116964Sgrehan return (ENXIO); 155116964Sgrehan 156116964Sgrehan if (strcmp(type, "pci") != 0 || strcmp(compatible, "grackle") != 0) 157116964Sgrehan return (ENXIO); 158116964Sgrehan 159116964Sgrehan device_set_desc(dev, "MPC106 (Grackle) Host-PCI bridge"); 160116964Sgrehan return (0); 161116964Sgrehan} 162116964Sgrehan 163116964Sgrehanstatic int 164116964Sgrehangrackle_attach(device_t dev) 165116964Sgrehan{ 166116964Sgrehan struct grackle_softc *sc; 167116964Sgrehan phandle_t node; 168116964Sgrehan u_int32_t busrange[2]; 169116964Sgrehan struct grackle_range *rp, *io, *mem[2]; 170179746Skevlo int nmem, i, error; 171116964Sgrehan 172183882Snwhitehorn node = ofw_bus_get_node(dev); 173116964Sgrehan sc = device_get_softc(dev); 174116964Sgrehan 175116964Sgrehan if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8) 176116964Sgrehan return (ENXIO); 177116964Sgrehan 178116964Sgrehan sc->sc_dev = dev; 179116964Sgrehan sc->sc_node = node; 180116964Sgrehan sc->sc_bus = busrange[0]; 181116964Sgrehan 182116964Sgrehan /* 183116964Sgrehan * The Grackle PCI config addr/data registers are actually in 184116964Sgrehan * PCI space, but since they are needed to actually probe the 185116964Sgrehan * PCI bus, use the fact that they are also available directly 186116964Sgrehan * on the processor bus and map them 187116964Sgrehan */ 188116964Sgrehan sc->sc_addr = (vm_offset_t)pmap_mapdev(GRACKLE_ADDR, PAGE_SIZE); 189116964Sgrehan sc->sc_data = (vm_offset_t)pmap_mapdev(GRACKLE_DATA, PAGE_SIZE); 190116964Sgrehan 191116964Sgrehan bzero(sc->sc_range, sizeof(sc->sc_range)); 192116964Sgrehan sc->sc_nrange = OF_getprop(node, "ranges", sc->sc_range, 193116964Sgrehan sizeof(sc->sc_range)); 194116964Sgrehan 195116964Sgrehan if (sc->sc_nrange == -1) { 196116964Sgrehan device_printf(dev, "could not get ranges\n"); 197116964Sgrehan return (ENXIO); 198116964Sgrehan } 199116964Sgrehan 200116964Sgrehan sc->sc_range[6].pci_hi = 0; 201116964Sgrehan io = NULL; 202116964Sgrehan nmem = 0; 203116964Sgrehan 204116964Sgrehan for (rp = sc->sc_range; rp->pci_hi != 0; rp++) { 205116964Sgrehan switch (rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) { 206116964Sgrehan case OFW_PCI_PHYS_HI_SPACE_CONFIG: 207116964Sgrehan break; 208116964Sgrehan case OFW_PCI_PHYS_HI_SPACE_IO: 209116964Sgrehan io = rp; 210116964Sgrehan break; 211116964Sgrehan case OFW_PCI_PHYS_HI_SPACE_MEM32: 212116964Sgrehan mem[nmem] = rp; 213116964Sgrehan nmem++; 214116964Sgrehan break; 215116964Sgrehan case OFW_PCI_PHYS_HI_SPACE_MEM64: 216116964Sgrehan break; 217116964Sgrehan } 218116964Sgrehan } 219116964Sgrehan 220116964Sgrehan if (io == NULL) { 221116964Sgrehan device_printf(dev, "can't find io range\n"); 222116964Sgrehan return (ENXIO); 223116964Sgrehan } 224116964Sgrehan sc->sc_io_rman.rm_type = RMAN_ARRAY; 225116964Sgrehan sc->sc_io_rman.rm_descr = "Grackle PCI I/O Ports"; 226116964Sgrehan sc->sc_iostart = io->pci_iospace; 227116964Sgrehan if (rman_init(&sc->sc_io_rman) != 0 || 228116964Sgrehan rman_manage_region(&sc->sc_io_rman, io->pci_lo, 229116964Sgrehan io->pci_lo + io->size_lo) != 0) { 230179746Skevlo panic("grackle_attach: failed to set up I/O rman"); 231116964Sgrehan } 232116964Sgrehan 233116964Sgrehan if (nmem == 0) { 234116964Sgrehan device_printf(dev, "can't find mem ranges\n"); 235116964Sgrehan return (ENXIO); 236116964Sgrehan } 237116964Sgrehan sc->sc_mem_rman.rm_type = RMAN_ARRAY; 238116964Sgrehan sc->sc_mem_rman.rm_descr = "Grackle PCI Memory"; 239179746Skevlo error = rman_init(&sc->sc_mem_rman); 240179746Skevlo if (error) { 241179746Skevlo device_printf(dev, "rman_init() failed. error = %d\n", error); 242179746Skevlo return (error); 243116964Sgrehan } 244116964Sgrehan for (i = 0; i < nmem; i++) { 245179746Skevlo error = rman_manage_region(&sc->sc_mem_rman, mem[i]->pci_lo, 246179746Skevlo mem[i]->pci_lo + mem[i]->size_lo); 247179746Skevlo if (error) { 248179746Skevlo device_printf(dev, 249179746Skevlo "rman_manage_region() failed. error = %d\n", error); 250179746Skevlo return (error); 251116964Sgrehan } 252116964Sgrehan } 253116964Sgrehan 254116964Sgrehan device_add_child(dev, "pci", device_get_unit(dev)); 255116964Sgrehan return (bus_generic_attach(dev)); 256116964Sgrehan} 257116964Sgrehan 258116964Sgrehanstatic int 259116964Sgrehangrackle_maxslots(device_t dev) 260116964Sgrehan{ 261116964Sgrehan 262116964Sgrehan return (PCI_SLOTMAX); 263116964Sgrehan} 264116964Sgrehan 265116964Sgrehanstatic u_int32_t 266116964Sgrehangrackle_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg, 267116964Sgrehan int width) 268116964Sgrehan{ 269116964Sgrehan struct grackle_softc *sc; 270116964Sgrehan vm_offset_t caoff; 271116964Sgrehan u_int32_t retval = 0xffffffff; 272116964Sgrehan 273116964Sgrehan sc = device_get_softc(dev); 274116964Sgrehan caoff = sc->sc_data + (reg & 0x03); 275116964Sgrehan 276116964Sgrehan if (grackle_enable_config(sc, bus, slot, func, reg) != 0) { 277116964Sgrehan 278116964Sgrehan /* 279116964Sgrehan * Config probes to non-existent devices on the 280116964Sgrehan * secondary bus generates machine checks. Be sure 281116964Sgrehan * to catch these. 282116964Sgrehan */ 283116964Sgrehan if (bus > 0) { 284125688Sgrehan if (badaddr((void *)sc->sc_data, 4)) { 285116964Sgrehan return (retval); 286116964Sgrehan } 287116964Sgrehan } 288125688Sgrehan 289116964Sgrehan switch (width) { 290116964Sgrehan case 1: 291116964Sgrehan retval = (in8rb(caoff)); 292116964Sgrehan break; 293116964Sgrehan case 2: 294116964Sgrehan retval = (in16rb(caoff)); 295116964Sgrehan break; 296116964Sgrehan case 4: 297116964Sgrehan retval = (in32rb(caoff)); 298116964Sgrehan break; 299116964Sgrehan } 300116964Sgrehan } 301116964Sgrehan grackle_disable_config(sc); 302116964Sgrehan 303116964Sgrehan return (retval); 304116964Sgrehan} 305116964Sgrehan 306116964Sgrehanstatic void 307116964Sgrehangrackle_write_config(device_t dev, u_int bus, u_int slot, u_int func, 308116964Sgrehan u_int reg, u_int32_t val, int width) 309116964Sgrehan{ 310116964Sgrehan struct grackle_softc *sc; 311116964Sgrehan vm_offset_t caoff; 312116964Sgrehan 313116964Sgrehan sc = device_get_softc(dev); 314116964Sgrehan caoff = sc->sc_data + (reg & 0x03); 315116964Sgrehan 316116964Sgrehan if (grackle_enable_config(sc, bus, slot, func, reg)) { 317116964Sgrehan switch (width) { 318116964Sgrehan case 1: 319116964Sgrehan out8rb(caoff, val); 320116964Sgrehan (void)in8rb(caoff); 321116964Sgrehan break; 322116964Sgrehan case 2: 323116964Sgrehan out16rb(caoff, val); 324116964Sgrehan (void)in16rb(caoff); 325116964Sgrehan break; 326116964Sgrehan case 4: 327116964Sgrehan out32rb(caoff, val); 328116964Sgrehan (void)in32rb(caoff); 329116964Sgrehan break; 330116964Sgrehan } 331116964Sgrehan } 332116964Sgrehan grackle_disable_config(sc); 333116964Sgrehan} 334116964Sgrehan 335116964Sgrehanstatic int 336116964Sgrehangrackle_route_interrupt(device_t bus, device_t dev, int pin) 337116964Sgrehan{ 338116964Sgrehan 339116964Sgrehan return (0); 340116964Sgrehan} 341116964Sgrehan 342116964Sgrehanstatic int 343116964Sgrehangrackle_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 344116964Sgrehan{ 345116964Sgrehan struct grackle_softc *sc; 346116964Sgrehan 347116964Sgrehan sc = device_get_softc(dev); 348116964Sgrehan 349116964Sgrehan switch (which) { 350172394Smarius case PCIB_IVAR_DOMAIN: 351172394Smarius *result = 0; 352172394Smarius return (0); 353116964Sgrehan case PCIB_IVAR_BUS: 354116964Sgrehan *result = sc->sc_bus; 355116964Sgrehan return (0); 356116964Sgrehan } 357116964Sgrehan 358116964Sgrehan return (ENOENT); 359116964Sgrehan} 360116964Sgrehan 361116964Sgrehanstatic struct resource * 362116964Sgrehangrackle_alloc_resource(device_t bus, device_t child, int type, int *rid, 363116964Sgrehan u_long start, u_long end, u_long count, u_int flags) 364116964Sgrehan{ 365116964Sgrehan struct grackle_softc *sc; 366116964Sgrehan struct resource *rv; 367116964Sgrehan struct rman *rm; 368116964Sgrehan int needactivate; 369116964Sgrehan 370116964Sgrehan needactivate = flags & RF_ACTIVE; 371116964Sgrehan flags &= ~RF_ACTIVE; 372116964Sgrehan 373116964Sgrehan sc = device_get_softc(bus); 374116964Sgrehan 375116964Sgrehan switch (type) { 376116964Sgrehan case SYS_RES_MEMORY: 377116964Sgrehan rm = &sc->sc_mem_rman; 378116964Sgrehan break; 379116964Sgrehan 380116964Sgrehan case SYS_RES_IOPORT: 381116964Sgrehan rm = &sc->sc_io_rman; 382116964Sgrehan break; 383116964Sgrehan 384116964Sgrehan case SYS_RES_IRQ: 385116964Sgrehan return (bus_alloc_resource(bus, type, rid, start, end, count, 386116964Sgrehan flags)); 387125688Sgrehan 388116964Sgrehan default: 389116964Sgrehan device_printf(bus, "unknown resource request from %s\n", 390116964Sgrehan device_get_nameunit(child)); 391116964Sgrehan return (NULL); 392116964Sgrehan } 393116964Sgrehan 394116964Sgrehan rv = rman_reserve_resource(rm, start, end, count, flags, child); 395116964Sgrehan if (rv == NULL) { 396116964Sgrehan device_printf(bus, "failed to reserve resource for %s\n", 397116964Sgrehan device_get_nameunit(child)); 398116964Sgrehan return (NULL); 399116964Sgrehan } 400116964Sgrehan 401157895Simp rman_set_rid(rv, *rid); 402116964Sgrehan 403116964Sgrehan if (needactivate) { 404116964Sgrehan if (bus_activate_resource(child, type, *rid, rv) != 0) { 405116964Sgrehan device_printf(bus, 406116964Sgrehan "failed to activate resource for %s\n", 407116964Sgrehan device_get_nameunit(child)); 408116964Sgrehan rman_release_resource(rv); 409116964Sgrehan return (NULL); 410116964Sgrehan } 411116964Sgrehan } 412116964Sgrehan 413116964Sgrehan return (rv); 414116964Sgrehan} 415116964Sgrehan 416116964Sgrehanstatic int 417116964Sgrehangrackle_release_resource(device_t bus, device_t child, int type, int rid, 418116964Sgrehan struct resource *res) 419116964Sgrehan{ 420116964Sgrehan if (rman_get_flags(res) & RF_ACTIVE) { 421116964Sgrehan int error = bus_deactivate_resource(child, type, rid, res); 422116964Sgrehan if (error) 423116964Sgrehan return error; 424116964Sgrehan } 425116964Sgrehan 426116964Sgrehan return (rman_release_resource(res)); 427116964Sgrehan} 428116964Sgrehan 429116964Sgrehanstatic int 430116964Sgrehangrackle_activate_resource(device_t bus, device_t child, int type, int rid, 431116964Sgrehan struct resource *res) 432116964Sgrehan{ 433116964Sgrehan struct grackle_softc *sc; 434116964Sgrehan void *p; 435116964Sgrehan 436125688Sgrehan sc = device_get_softc(bus); 437116964Sgrehan 438116964Sgrehan if (type == SYS_RES_IRQ) { 439116964Sgrehan return (bus_activate_resource(bus, type, rid, res)); 440116964Sgrehan } 441116964Sgrehan if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) { 442116964Sgrehan vm_offset_t start; 443116964Sgrehan 444116964Sgrehan start = (vm_offset_t)rman_get_start(res); 445116964Sgrehan /* 446116964Sgrehan * For i/o-ports, convert the start address to the 447116964Sgrehan * MPC106 PCI i/o window 448116964Sgrehan */ 449116964Sgrehan if (type == SYS_RES_IOPORT) 450116964Sgrehan start += sc->sc_iostart; 451116964Sgrehan 452125688Sgrehan if (bootverbose) 453125688Sgrehan printf("grackle mapdev: start %x, len %ld\n", start, 454116964Sgrehan rman_get_size(res)); 455125688Sgrehan 456116964Sgrehan p = pmap_mapdev(start, (vm_size_t)rman_get_size(res)); 457116964Sgrehan if (p == NULL) 458116964Sgrehan return (ENOMEM); 459116964Sgrehan 460116964Sgrehan rman_set_virtual(res, p); 461174822Smarcel rman_set_bustag(res, &bs_le_tag); 462116964Sgrehan rman_set_bushandle(res, (u_long)p); 463116964Sgrehan } 464116964Sgrehan 465116964Sgrehan return (rman_activate_resource(res)); 466116964Sgrehan} 467116964Sgrehan 468116964Sgrehanstatic int 469116964Sgrehangrackle_deactivate_resource(device_t bus, device_t child, int type, int rid, 470116964Sgrehan struct resource *res) 471116964Sgrehan{ 472116964Sgrehan /* 473116964Sgrehan * If this is a memory resource, unmap it. 474116964Sgrehan */ 475116964Sgrehan if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) { 476116964Sgrehan u_int32_t psize; 477116964Sgrehan 478116964Sgrehan psize = rman_get_size(res); 479116964Sgrehan pmap_unmapdev((vm_offset_t)rman_get_virtual(res), psize); 480116964Sgrehan } 481116964Sgrehan 482116964Sgrehan return (rman_deactivate_resource(res)); 483116964Sgrehan} 484116964Sgrehan 485116964Sgrehan 486116964Sgrehanstatic int 487116964Sgrehangrackle_enable_config(struct grackle_softc *sc, u_int bus, u_int slot, 488116964Sgrehan u_int func, u_int reg) 489116964Sgrehan{ 490116964Sgrehan u_int32_t cfgval; 491116964Sgrehan 492116964Sgrehan /* 493116964Sgrehan * Unlike UniNorth, the format of the config word is the same 494116964Sgrehan * for local (0) and remote busses. 495116964Sgrehan */ 496116964Sgrehan cfgval = (bus << 16) | (slot << 11) | (func << 8) | (reg & 0xFC) 497116964Sgrehan | GRACKLE_CFG_ENABLE; 498125688Sgrehan 499116964Sgrehan out32rb(sc->sc_addr, cfgval); 500116964Sgrehan (void) in32rb(sc->sc_addr); 501116964Sgrehan 502116964Sgrehan return (1); 503116964Sgrehan} 504116964Sgrehan 505116964Sgrehanstatic void 506116964Sgrehangrackle_disable_config(struct grackle_softc *sc) 507116964Sgrehan{ 508116964Sgrehan /* 509116964Sgrehan * Clear the GRACKLE_CFG_ENABLE bit to prevent stray 510116964Sgrehan * accesses from causing config cycles 511116964Sgrehan */ 512116964Sgrehan out32rb(sc->sc_addr, 0); 513116964Sgrehan} 514116964Sgrehan 515183882Snwhitehornstatic phandle_t 516183882Snwhitehorngrackle_get_node(device_t bus, device_t dev) 517183882Snwhitehorn{ 518183882Snwhitehorn struct grackle_softc *sc; 519183882Snwhitehorn 520183882Snwhitehorn sc = device_get_softc(bus); 521183882Snwhitehorn /* We only have one child, the PCI bus, which needs our own node. */ 522183882Snwhitehorn 523183882Snwhitehorn return sc->sc_node; 524183882Snwhitehorn} 525183882Snwhitehorn 526116964Sgrehan/* 527116964Sgrehan * Driver to swallow Grackle host bridges from the PCI bus side. 528116964Sgrehan */ 529116964Sgrehanstatic int 530116964Sgrehangrackle_hb_probe(device_t dev) 531116964Sgrehan{ 532116964Sgrehan 533127703Sgrehan if (pci_get_devid(dev) == 0x00021057) { 534127703Sgrehan device_set_desc(dev, "Grackle Host to PCI bridge"); 535116964Sgrehan device_quiet(dev); 536127703Sgrehan return (0); 537116964Sgrehan } 538116964Sgrehan 539116964Sgrehan return (ENXIO); 540116964Sgrehan} 541116964Sgrehan 542116964Sgrehanstatic int 543116964Sgrehangrackle_hb_attach(device_t dev) 544116964Sgrehan{ 545116964Sgrehan 546116964Sgrehan return (0); 547116964Sgrehan} 548116964Sgrehan 549116964Sgrehanstatic device_method_t grackle_hb_methods[] = { 550116964Sgrehan /* Device interface */ 551116964Sgrehan DEVMETHOD(device_probe, grackle_hb_probe), 552116964Sgrehan DEVMETHOD(device_attach, grackle_hb_attach), 553116964Sgrehan 554116964Sgrehan { 0, 0 } 555116964Sgrehan}; 556116964Sgrehan 557116964Sgrehanstatic driver_t grackle_hb_driver = { 558116964Sgrehan "grackle_hb", 559116964Sgrehan grackle_hb_methods, 560116964Sgrehan 1, 561116964Sgrehan}; 562116964Sgrehanstatic devclass_t grackle_hb_devclass; 563116964Sgrehan 564116964SgrehanDRIVER_MODULE(grackle_hb, pci, grackle_hb_driver, grackle_hb_devclass, 0, 0); 565