grackle.c revision 139825
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 139825 2005-01-07 02:29:27Z imp $ 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> 39116964Sgrehan 40116964Sgrehan#include <dev/pci/pcivar.h> 41116964Sgrehan#include <dev/pci/pcireg.h> 42116964Sgrehan 43116964Sgrehan#include <machine/bus.h> 44116964Sgrehan#include <machine/md_var.h> 45116964Sgrehan#include <machine/nexusvar.h> 46116964Sgrehan#include <machine/resource.h> 47116964Sgrehan 48116964Sgrehan#include <sys/rman.h> 49116964Sgrehan 50116964Sgrehan#include <powerpc/ofw/ofw_pci.h> 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/* 94116964Sgrehan * Local routines. 95116964Sgrehan */ 96116964Sgrehanstatic int grackle_enable_config(struct grackle_softc *, u_int, 97116964Sgrehan u_int, u_int, u_int); 98116964Sgrehanstatic void grackle_disable_config(struct grackle_softc *); 99116964Sgrehan 100116964Sgrehan/* 101116964Sgrehan * Driver methods. 102116964Sgrehan */ 103116964Sgrehanstatic device_method_t grackle_methods[] = { 104116964Sgrehan /* Device interface */ 105116964Sgrehan DEVMETHOD(device_probe, grackle_probe), 106116964Sgrehan DEVMETHOD(device_attach, grackle_attach), 107116964Sgrehan 108116964Sgrehan /* Bus interface */ 109116964Sgrehan DEVMETHOD(bus_print_child, bus_generic_print_child), 110116964Sgrehan DEVMETHOD(bus_read_ivar, grackle_read_ivar), 111116964Sgrehan DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 112116964Sgrehan DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 113116964Sgrehan DEVMETHOD(bus_alloc_resource, grackle_alloc_resource), 114116964Sgrehan DEVMETHOD(bus_release_resource, grackle_release_resource), 115116964Sgrehan DEVMETHOD(bus_activate_resource, grackle_activate_resource), 116116964Sgrehan DEVMETHOD(bus_deactivate_resource, grackle_deactivate_resource), 117116964Sgrehan 118116964Sgrehan /* pcib interface */ 119116964Sgrehan DEVMETHOD(pcib_maxslots, grackle_maxslots), 120116964Sgrehan DEVMETHOD(pcib_read_config, grackle_read_config), 121116964Sgrehan DEVMETHOD(pcib_write_config, grackle_write_config), 122116964Sgrehan DEVMETHOD(pcib_route_interrupt, grackle_route_interrupt), 123116964Sgrehan 124116964Sgrehan { 0, 0 } 125116964Sgrehan}; 126116964Sgrehan 127116964Sgrehanstatic driver_t grackle_driver = { 128116964Sgrehan "pcib", 129116964Sgrehan grackle_methods, 130116964Sgrehan sizeof(struct grackle_softc) 131116964Sgrehan}; 132116964Sgrehan 133116964Sgrehanstatic devclass_t grackle_devclass; 134116964Sgrehan 135116964SgrehanDRIVER_MODULE(grackle, nexus, grackle_driver, grackle_devclass, 0, 0); 136116964Sgrehan 137116964Sgrehanstatic int 138116964Sgrehangrackle_probe(device_t dev) 139116964Sgrehan{ 140116964Sgrehan char *type, *compatible; 141116964Sgrehan 142116964Sgrehan type = nexus_get_device_type(dev); 143116964Sgrehan compatible = nexus_get_compatible(dev); 144116964Sgrehan 145116964Sgrehan if (type == NULL || compatible == NULL) 146116964Sgrehan return (ENXIO); 147116964Sgrehan 148116964Sgrehan if (strcmp(type, "pci") != 0 || strcmp(compatible, "grackle") != 0) 149116964Sgrehan return (ENXIO); 150116964Sgrehan 151116964Sgrehan device_set_desc(dev, "MPC106 (Grackle) Host-PCI bridge"); 152116964Sgrehan return (0); 153116964Sgrehan} 154116964Sgrehan 155116964Sgrehanstatic int 156116964Sgrehangrackle_attach(device_t dev) 157116964Sgrehan{ 158116964Sgrehan struct grackle_softc *sc; 159116964Sgrehan phandle_t node; 160116964Sgrehan u_int32_t busrange[2]; 161116964Sgrehan struct grackle_range *rp, *io, *mem[2]; 162116964Sgrehan int nmem, i; 163116964Sgrehan 164116964Sgrehan node = nexus_get_node(dev); 165116964Sgrehan sc = device_get_softc(dev); 166116964Sgrehan 167116964Sgrehan if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8) 168116964Sgrehan return (ENXIO); 169116964Sgrehan 170116964Sgrehan sc->sc_dev = dev; 171116964Sgrehan sc->sc_node = node; 172116964Sgrehan sc->sc_bus = busrange[0]; 173116964Sgrehan 174116964Sgrehan /* 175116964Sgrehan * The Grackle PCI config addr/data registers are actually in 176116964Sgrehan * PCI space, but since they are needed to actually probe the 177116964Sgrehan * PCI bus, use the fact that they are also available directly 178116964Sgrehan * on the processor bus and map them 179116964Sgrehan */ 180116964Sgrehan sc->sc_addr = (vm_offset_t)pmap_mapdev(GRACKLE_ADDR, PAGE_SIZE); 181116964Sgrehan sc->sc_data = (vm_offset_t)pmap_mapdev(GRACKLE_DATA, PAGE_SIZE); 182116964Sgrehan 183116964Sgrehan bzero(sc->sc_range, sizeof(sc->sc_range)); 184116964Sgrehan sc->sc_nrange = OF_getprop(node, "ranges", sc->sc_range, 185116964Sgrehan sizeof(sc->sc_range)); 186116964Sgrehan 187116964Sgrehan if (sc->sc_nrange == -1) { 188116964Sgrehan device_printf(dev, "could not get ranges\n"); 189116964Sgrehan return (ENXIO); 190116964Sgrehan } 191116964Sgrehan 192116964Sgrehan sc->sc_range[6].pci_hi = 0; 193116964Sgrehan io = NULL; 194116964Sgrehan nmem = 0; 195116964Sgrehan 196116964Sgrehan for (rp = sc->sc_range; rp->pci_hi != 0; rp++) { 197116964Sgrehan switch (rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) { 198116964Sgrehan case OFW_PCI_PHYS_HI_SPACE_CONFIG: 199116964Sgrehan break; 200116964Sgrehan case OFW_PCI_PHYS_HI_SPACE_IO: 201116964Sgrehan io = rp; 202116964Sgrehan break; 203116964Sgrehan case OFW_PCI_PHYS_HI_SPACE_MEM32: 204116964Sgrehan mem[nmem] = rp; 205116964Sgrehan nmem++; 206116964Sgrehan break; 207116964Sgrehan case OFW_PCI_PHYS_HI_SPACE_MEM64: 208116964Sgrehan break; 209116964Sgrehan } 210116964Sgrehan } 211116964Sgrehan 212116964Sgrehan if (io == NULL) { 213116964Sgrehan device_printf(dev, "can't find io range\n"); 214116964Sgrehan return (ENXIO); 215116964Sgrehan } 216116964Sgrehan sc->sc_io_rman.rm_type = RMAN_ARRAY; 217116964Sgrehan sc->sc_io_rman.rm_descr = "Grackle PCI I/O Ports"; 218116964Sgrehan sc->sc_iostart = io->pci_iospace; 219116964Sgrehan if (rman_init(&sc->sc_io_rman) != 0 || 220116964Sgrehan rman_manage_region(&sc->sc_io_rman, io->pci_lo, 221116964Sgrehan io->pci_lo + io->size_lo) != 0) { 222116964Sgrehan device_printf(dev, "failed to set up io range management\n"); 223116964Sgrehan return (ENXIO); 224116964Sgrehan } 225116964Sgrehan 226116964Sgrehan if (nmem == 0) { 227116964Sgrehan device_printf(dev, "can't find mem ranges\n"); 228116964Sgrehan return (ENXIO); 229116964Sgrehan } 230116964Sgrehan sc->sc_mem_rman.rm_type = RMAN_ARRAY; 231116964Sgrehan sc->sc_mem_rman.rm_descr = "Grackle PCI Memory"; 232116964Sgrehan if (rman_init(&sc->sc_mem_rman) != 0) { 233116964Sgrehan device_printf(dev, 234116964Sgrehan "failed to init mem range resources\n"); 235116964Sgrehan return (ENXIO); 236116964Sgrehan } 237116964Sgrehan for (i = 0; i < nmem; i++) { 238116964Sgrehan if (rman_manage_region(&sc->sc_mem_rman, mem[i]->pci_lo, 239116964Sgrehan mem[i]->pci_lo + mem[i]->size_lo) != 0) { 240116964Sgrehan device_printf(dev, 241116964Sgrehan "failed to set up memory range management\n"); 242116964Sgrehan return (ENXIO); 243116964Sgrehan } 244116964Sgrehan } 245116964Sgrehan 246116964Sgrehan /* 247125688Sgrehan * Write out the correct PIC interrupt values to config space 248116964Sgrehan * of all devices on the bus. 249116964Sgrehan */ 250116964Sgrehan ofw_pci_fixup(dev, sc->sc_bus, sc->sc_node); 251116964Sgrehan 252116964Sgrehan device_add_child(dev, "pci", device_get_unit(dev)); 253116964Sgrehan return (bus_generic_attach(dev)); 254116964Sgrehan} 255116964Sgrehan 256116964Sgrehanstatic int 257116964Sgrehangrackle_maxslots(device_t dev) 258116964Sgrehan{ 259116964Sgrehan 260116964Sgrehan return (PCI_SLOTMAX); 261116964Sgrehan} 262116964Sgrehan 263116964Sgrehanstatic u_int32_t 264116964Sgrehangrackle_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg, 265116964Sgrehan int width) 266116964Sgrehan{ 267116964Sgrehan struct grackle_softc *sc; 268116964Sgrehan vm_offset_t caoff; 269116964Sgrehan u_int32_t retval = 0xffffffff; 270116964Sgrehan 271116964Sgrehan sc = device_get_softc(dev); 272116964Sgrehan caoff = sc->sc_data + (reg & 0x03); 273116964Sgrehan 274116964Sgrehan if (grackle_enable_config(sc, bus, slot, func, reg) != 0) { 275116964Sgrehan 276116964Sgrehan /* 277116964Sgrehan * Config probes to non-existent devices on the 278116964Sgrehan * secondary bus generates machine checks. Be sure 279116964Sgrehan * to catch these. 280116964Sgrehan */ 281116964Sgrehan if (bus > 0) { 282125688Sgrehan if (badaddr((void *)sc->sc_data, 4)) { 283116964Sgrehan return (retval); 284116964Sgrehan } 285116964Sgrehan } 286125688Sgrehan 287116964Sgrehan switch (width) { 288116964Sgrehan case 1: 289116964Sgrehan retval = (in8rb(caoff)); 290116964Sgrehan break; 291116964Sgrehan case 2: 292116964Sgrehan retval = (in16rb(caoff)); 293116964Sgrehan break; 294116964Sgrehan case 4: 295116964Sgrehan retval = (in32rb(caoff)); 296116964Sgrehan break; 297116964Sgrehan } 298116964Sgrehan } 299116964Sgrehan grackle_disable_config(sc); 300116964Sgrehan 301116964Sgrehan return (retval); 302116964Sgrehan} 303116964Sgrehan 304116964Sgrehanstatic void 305116964Sgrehangrackle_write_config(device_t dev, u_int bus, u_int slot, u_int func, 306116964Sgrehan u_int reg, u_int32_t val, int width) 307116964Sgrehan{ 308116964Sgrehan struct grackle_softc *sc; 309116964Sgrehan vm_offset_t caoff; 310116964Sgrehan 311116964Sgrehan sc = device_get_softc(dev); 312116964Sgrehan caoff = sc->sc_data + (reg & 0x03); 313116964Sgrehan 314116964Sgrehan if (grackle_enable_config(sc, bus, slot, func, reg)) { 315116964Sgrehan switch (width) { 316116964Sgrehan case 1: 317116964Sgrehan out8rb(caoff, val); 318116964Sgrehan (void)in8rb(caoff); 319116964Sgrehan break; 320116964Sgrehan case 2: 321116964Sgrehan out16rb(caoff, val); 322116964Sgrehan (void)in16rb(caoff); 323116964Sgrehan break; 324116964Sgrehan case 4: 325116964Sgrehan out32rb(caoff, val); 326116964Sgrehan (void)in32rb(caoff); 327116964Sgrehan break; 328116964Sgrehan } 329116964Sgrehan } 330116964Sgrehan grackle_disable_config(sc); 331116964Sgrehan} 332116964Sgrehan 333116964Sgrehanstatic int 334116964Sgrehangrackle_route_interrupt(device_t bus, device_t dev, int pin) 335116964Sgrehan{ 336116964Sgrehan 337116964Sgrehan return (0); 338116964Sgrehan} 339116964Sgrehan 340116964Sgrehanstatic int 341116964Sgrehangrackle_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 342116964Sgrehan{ 343116964Sgrehan struct grackle_softc *sc; 344116964Sgrehan 345116964Sgrehan sc = device_get_softc(dev); 346116964Sgrehan 347116964Sgrehan switch (which) { 348116964Sgrehan case PCIB_IVAR_BUS: 349116964Sgrehan *result = sc->sc_bus; 350116964Sgrehan return (0); 351116964Sgrehan break; 352116964Sgrehan } 353116964Sgrehan 354116964Sgrehan return (ENOENT); 355116964Sgrehan} 356116964Sgrehan 357116964Sgrehanstatic struct resource * 358116964Sgrehangrackle_alloc_resource(device_t bus, device_t child, int type, int *rid, 359116964Sgrehan u_long start, u_long end, u_long count, u_int flags) 360116964Sgrehan{ 361116964Sgrehan struct grackle_softc *sc; 362116964Sgrehan struct resource *rv; 363116964Sgrehan struct rman *rm; 364116964Sgrehan bus_space_tag_t bt; 365116964Sgrehan int needactivate; 366116964Sgrehan 367116964Sgrehan needactivate = flags & RF_ACTIVE; 368116964Sgrehan flags &= ~RF_ACTIVE; 369116964Sgrehan 370116964Sgrehan sc = device_get_softc(bus); 371116964Sgrehan 372116964Sgrehan switch (type) { 373116964Sgrehan case SYS_RES_MEMORY: 374116964Sgrehan rm = &sc->sc_mem_rman; 375116964Sgrehan bt = PPC_BUS_SPACE_MEM; 376116964Sgrehan break; 377116964Sgrehan 378116964Sgrehan case SYS_RES_IOPORT: 379116964Sgrehan rm = &sc->sc_io_rman; 380116964Sgrehan bt = PPC_BUS_SPACE_IO; 381116964Sgrehan break; 382116964Sgrehan 383116964Sgrehan case SYS_RES_IRQ: 384116964Sgrehan return (bus_alloc_resource(bus, type, rid, start, end, count, 385116964Sgrehan flags)); 386116964Sgrehan break; 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 401116964Sgrehan rman_set_bustag(rv, bt); 402116964Sgrehan rman_set_bushandle(rv, rman_get_start(rv)); 403116964Sgrehan 404116964Sgrehan if (needactivate) { 405116964Sgrehan if (bus_activate_resource(child, type, *rid, rv) != 0) { 406116964Sgrehan device_printf(bus, 407116964Sgrehan "failed to activate resource for %s\n", 408116964Sgrehan device_get_nameunit(child)); 409116964Sgrehan rman_release_resource(rv); 410116964Sgrehan return (NULL); 411116964Sgrehan } 412116964Sgrehan } 413116964Sgrehan 414116964Sgrehan return (rv); 415116964Sgrehan} 416116964Sgrehan 417116964Sgrehanstatic int 418116964Sgrehangrackle_release_resource(device_t bus, device_t child, int type, int rid, 419116964Sgrehan struct resource *res) 420116964Sgrehan{ 421116964Sgrehan if (rman_get_flags(res) & RF_ACTIVE) { 422116964Sgrehan int error = bus_deactivate_resource(child, type, rid, res); 423116964Sgrehan if (error) 424116964Sgrehan return error; 425116964Sgrehan } 426116964Sgrehan 427116964Sgrehan return (rman_release_resource(res)); 428116964Sgrehan} 429116964Sgrehan 430116964Sgrehanstatic int 431116964Sgrehangrackle_activate_resource(device_t bus, device_t child, int type, int rid, 432116964Sgrehan struct resource *res) 433116964Sgrehan{ 434116964Sgrehan struct grackle_softc *sc; 435116964Sgrehan void *p; 436116964Sgrehan 437125688Sgrehan sc = device_get_softc(bus); 438116964Sgrehan 439116964Sgrehan if (type == SYS_RES_IRQ) { 440116964Sgrehan return (bus_activate_resource(bus, type, rid, res)); 441116964Sgrehan } 442116964Sgrehan if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) { 443116964Sgrehan vm_offset_t start; 444116964Sgrehan 445116964Sgrehan start = (vm_offset_t)rman_get_start(res); 446116964Sgrehan /* 447116964Sgrehan * For i/o-ports, convert the start address to the 448116964Sgrehan * MPC106 PCI i/o window 449116964Sgrehan */ 450116964Sgrehan if (type == SYS_RES_IOPORT) 451116964Sgrehan start += sc->sc_iostart; 452116964Sgrehan 453125688Sgrehan if (bootverbose) 454125688Sgrehan printf("grackle mapdev: start %x, len %ld\n", start, 455116964Sgrehan rman_get_size(res)); 456125688Sgrehan 457116964Sgrehan p = pmap_mapdev(start, (vm_size_t)rman_get_size(res)); 458116964Sgrehan if (p == NULL) 459116964Sgrehan return (ENOMEM); 460116964Sgrehan 461116964Sgrehan rman_set_virtual(res, p); 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 515116964Sgrehan/* 516116964Sgrehan * Driver to swallow Grackle host bridges from the PCI bus side. 517116964Sgrehan */ 518116964Sgrehanstatic int 519116964Sgrehangrackle_hb_probe(device_t dev) 520116964Sgrehan{ 521116964Sgrehan 522127703Sgrehan if (pci_get_devid(dev) == 0x00021057) { 523127703Sgrehan device_set_desc(dev, "Grackle Host to PCI bridge"); 524116964Sgrehan device_quiet(dev); 525127703Sgrehan return (0); 526116964Sgrehan } 527116964Sgrehan 528116964Sgrehan return (ENXIO); 529116964Sgrehan} 530116964Sgrehan 531116964Sgrehanstatic int 532116964Sgrehangrackle_hb_attach(device_t dev) 533116964Sgrehan{ 534116964Sgrehan 535116964Sgrehan return (0); 536116964Sgrehan} 537116964Sgrehan 538116964Sgrehanstatic device_method_t grackle_hb_methods[] = { 539116964Sgrehan /* Device interface */ 540116964Sgrehan DEVMETHOD(device_probe, grackle_hb_probe), 541116964Sgrehan DEVMETHOD(device_attach, grackle_hb_attach), 542116964Sgrehan 543116964Sgrehan { 0, 0 } 544116964Sgrehan}; 545116964Sgrehan 546116964Sgrehanstatic driver_t grackle_hb_driver = { 547116964Sgrehan "grackle_hb", 548116964Sgrehan grackle_hb_methods, 549116964Sgrehan 1, 550116964Sgrehan}; 551116964Sgrehanstatic devclass_t grackle_hb_devclass; 552116964Sgrehan 553116964SgrehanDRIVER_MODULE(grackle_hb, pci, grackle_hb_driver, grackle_hb_devclass, 0, 0); 554