grackle.c revision 186128
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 186128 2008-12-15 15:31:10Z 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> 40186128Snwhitehorn#include <dev/ofw/ofw_bus_subr.h> 41116964Sgrehan 42116964Sgrehan#include <dev/pci/pcivar.h> 43116964Sgrehan#include <dev/pci/pcireg.h> 44116964Sgrehan 45116964Sgrehan#include <machine/bus.h> 46116964Sgrehan#include <machine/md_var.h> 47174782Smarcel#include <machine/pio.h> 48116964Sgrehan#include <machine/resource.h> 49116964Sgrehan 50116964Sgrehan#include <sys/rman.h> 51116964Sgrehan 52116964Sgrehan#include <powerpc/powermac/gracklevar.h> 53116964Sgrehan 54116964Sgrehan#include <vm/vm.h> 55116964Sgrehan#include <vm/pmap.h> 56116964Sgrehan 57116964Sgrehan#include "pcib_if.h" 58116964Sgrehan 59125688Sgrehanint badaddr(void *, size_t); /* XXX */ 60125688Sgrehan 61116964Sgrehan/* 62116964Sgrehan * Device interface. 63116964Sgrehan */ 64116964Sgrehanstatic int grackle_probe(device_t); 65116964Sgrehanstatic int grackle_attach(device_t); 66116964Sgrehan 67116964Sgrehan/* 68116964Sgrehan * Bus interface. 69116964Sgrehan */ 70116964Sgrehanstatic int grackle_read_ivar(device_t, device_t, int, 71116964Sgrehan uintptr_t *); 72116964Sgrehanstatic struct resource * grackle_alloc_resource(device_t bus, 73116964Sgrehan device_t child, int type, int *rid, u_long start, 74116964Sgrehan u_long end, u_long count, u_int flags); 75116964Sgrehanstatic int grackle_release_resource(device_t bus, device_t child, 76116964Sgrehan int type, int rid, struct resource *res); 77116964Sgrehanstatic int grackle_activate_resource(device_t bus, device_t child, 78116964Sgrehan int type, int rid, struct resource *res); 79125688Sgrehanstatic int grackle_deactivate_resource(device_t bus, 80125688Sgrehan device_t child, int type, int rid, 81116964Sgrehan struct resource *res); 82116964Sgrehan 83116964Sgrehan 84116964Sgrehan/* 85116964Sgrehan * pcib interface. 86116964Sgrehan */ 87116964Sgrehanstatic int grackle_maxslots(device_t); 88116964Sgrehanstatic u_int32_t grackle_read_config(device_t, u_int, u_int, u_int, 89116964Sgrehan u_int, int); 90116964Sgrehanstatic void grackle_write_config(device_t, u_int, u_int, u_int, 91116964Sgrehan u_int, u_int32_t, int); 92116964Sgrehanstatic int grackle_route_interrupt(device_t, device_t, int); 93116964Sgrehan 94116964Sgrehan/* 95183882Snwhitehorn * ofw_bus interface 96183882Snwhitehorn */ 97183882Snwhitehornstatic phandle_t grackle_get_node(device_t bus, device_t dev); 98183882Snwhitehorn 99183882Snwhitehorn/* 100116964Sgrehan * Local routines. 101116964Sgrehan */ 102116964Sgrehanstatic int grackle_enable_config(struct grackle_softc *, u_int, 103116964Sgrehan u_int, u_int, u_int); 104116964Sgrehanstatic void grackle_disable_config(struct grackle_softc *); 105116964Sgrehan 106116964Sgrehan/* 107116964Sgrehan * Driver methods. 108116964Sgrehan */ 109116964Sgrehanstatic device_method_t grackle_methods[] = { 110116964Sgrehan /* Device interface */ 111116964Sgrehan DEVMETHOD(device_probe, grackle_probe), 112116964Sgrehan DEVMETHOD(device_attach, grackle_attach), 113116964Sgrehan 114116964Sgrehan /* Bus interface */ 115116964Sgrehan DEVMETHOD(bus_print_child, bus_generic_print_child), 116116964Sgrehan DEVMETHOD(bus_read_ivar, grackle_read_ivar), 117116964Sgrehan DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 118116964Sgrehan DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 119116964Sgrehan DEVMETHOD(bus_alloc_resource, grackle_alloc_resource), 120116964Sgrehan DEVMETHOD(bus_release_resource, grackle_release_resource), 121116964Sgrehan DEVMETHOD(bus_activate_resource, grackle_activate_resource), 122116964Sgrehan DEVMETHOD(bus_deactivate_resource, grackle_deactivate_resource), 123116964Sgrehan 124116964Sgrehan /* pcib interface */ 125116964Sgrehan DEVMETHOD(pcib_maxslots, grackle_maxslots), 126116964Sgrehan DEVMETHOD(pcib_read_config, grackle_read_config), 127116964Sgrehan DEVMETHOD(pcib_write_config, grackle_write_config), 128116964Sgrehan DEVMETHOD(pcib_route_interrupt, grackle_route_interrupt), 129116964Sgrehan 130183882Snwhitehorn /* ofw_bus interface */ 131183882Snwhitehorn DEVMETHOD(ofw_bus_get_node, grackle_get_node), 132183882Snwhitehorn 133116964Sgrehan { 0, 0 } 134116964Sgrehan}; 135116964Sgrehan 136116964Sgrehanstatic driver_t grackle_driver = { 137116964Sgrehan "pcib", 138116964Sgrehan grackle_methods, 139116964Sgrehan sizeof(struct grackle_softc) 140116964Sgrehan}; 141116964Sgrehan 142116964Sgrehanstatic devclass_t grackle_devclass; 143116964Sgrehan 144116964SgrehanDRIVER_MODULE(grackle, nexus, grackle_driver, grackle_devclass, 0, 0); 145116964Sgrehan 146116964Sgrehanstatic int 147116964Sgrehangrackle_probe(device_t dev) 148116964Sgrehan{ 149183882Snwhitehorn const char *type, *compatible; 150116964Sgrehan 151183882Snwhitehorn type = ofw_bus_get_type(dev); 152183882Snwhitehorn compatible = ofw_bus_get_compat(dev); 153116964Sgrehan 154116964Sgrehan if (type == NULL || compatible == NULL) 155116964Sgrehan return (ENXIO); 156116964Sgrehan 157116964Sgrehan if (strcmp(type, "pci") != 0 || strcmp(compatible, "grackle") != 0) 158116964Sgrehan return (ENXIO); 159116964Sgrehan 160116964Sgrehan device_set_desc(dev, "MPC106 (Grackle) Host-PCI bridge"); 161116964Sgrehan return (0); 162116964Sgrehan} 163116964Sgrehan 164116964Sgrehanstatic int 165116964Sgrehangrackle_attach(device_t dev) 166116964Sgrehan{ 167116964Sgrehan struct grackle_softc *sc; 168186128Snwhitehorn phandle_t node, iparent; 169116964Sgrehan u_int32_t busrange[2]; 170116964Sgrehan struct grackle_range *rp, *io, *mem[2]; 171179746Skevlo int nmem, i, error; 172116964Sgrehan 173183882Snwhitehorn node = ofw_bus_get_node(dev); 174116964Sgrehan sc = device_get_softc(dev); 175116964Sgrehan 176116964Sgrehan if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8) 177116964Sgrehan return (ENXIO); 178116964Sgrehan 179116964Sgrehan sc->sc_dev = dev; 180116964Sgrehan sc->sc_node = node; 181116964Sgrehan sc->sc_bus = busrange[0]; 182116964Sgrehan 183116964Sgrehan /* 184116964Sgrehan * The Grackle PCI config addr/data registers are actually in 185116964Sgrehan * PCI space, but since they are needed to actually probe the 186116964Sgrehan * PCI bus, use the fact that they are also available directly 187116964Sgrehan * on the processor bus and map them 188116964Sgrehan */ 189116964Sgrehan sc->sc_addr = (vm_offset_t)pmap_mapdev(GRACKLE_ADDR, PAGE_SIZE); 190116964Sgrehan sc->sc_data = (vm_offset_t)pmap_mapdev(GRACKLE_DATA, PAGE_SIZE); 191116964Sgrehan 192116964Sgrehan bzero(sc->sc_range, sizeof(sc->sc_range)); 193116964Sgrehan sc->sc_nrange = OF_getprop(node, "ranges", sc->sc_range, 194116964Sgrehan sizeof(sc->sc_range)); 195116964Sgrehan 196116964Sgrehan if (sc->sc_nrange == -1) { 197116964Sgrehan device_printf(dev, "could not get ranges\n"); 198116964Sgrehan return (ENXIO); 199116964Sgrehan } 200116964Sgrehan 201116964Sgrehan sc->sc_range[6].pci_hi = 0; 202116964Sgrehan io = NULL; 203116964Sgrehan nmem = 0; 204116964Sgrehan 205116964Sgrehan for (rp = sc->sc_range; rp->pci_hi != 0; rp++) { 206116964Sgrehan switch (rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) { 207116964Sgrehan case OFW_PCI_PHYS_HI_SPACE_CONFIG: 208116964Sgrehan break; 209116964Sgrehan case OFW_PCI_PHYS_HI_SPACE_IO: 210116964Sgrehan io = rp; 211116964Sgrehan break; 212116964Sgrehan case OFW_PCI_PHYS_HI_SPACE_MEM32: 213116964Sgrehan mem[nmem] = rp; 214116964Sgrehan nmem++; 215116964Sgrehan break; 216116964Sgrehan case OFW_PCI_PHYS_HI_SPACE_MEM64: 217116964Sgrehan break; 218116964Sgrehan } 219116964Sgrehan } 220116964Sgrehan 221116964Sgrehan if (io == NULL) { 222116964Sgrehan device_printf(dev, "can't find io range\n"); 223116964Sgrehan return (ENXIO); 224116964Sgrehan } 225116964Sgrehan sc->sc_io_rman.rm_type = RMAN_ARRAY; 226116964Sgrehan sc->sc_io_rman.rm_descr = "Grackle PCI I/O Ports"; 227116964Sgrehan sc->sc_iostart = io->pci_iospace; 228116964Sgrehan if (rman_init(&sc->sc_io_rman) != 0 || 229116964Sgrehan rman_manage_region(&sc->sc_io_rman, io->pci_lo, 230116964Sgrehan io->pci_lo + io->size_lo) != 0) { 231179746Skevlo panic("grackle_attach: failed to set up I/O rman"); 232116964Sgrehan } 233116964Sgrehan 234116964Sgrehan if (nmem == 0) { 235116964Sgrehan device_printf(dev, "can't find mem ranges\n"); 236116964Sgrehan return (ENXIO); 237116964Sgrehan } 238116964Sgrehan sc->sc_mem_rman.rm_type = RMAN_ARRAY; 239116964Sgrehan sc->sc_mem_rman.rm_descr = "Grackle PCI Memory"; 240179746Skevlo error = rman_init(&sc->sc_mem_rman); 241179746Skevlo if (error) { 242179746Skevlo device_printf(dev, "rman_init() failed. error = %d\n", error); 243179746Skevlo return (error); 244116964Sgrehan } 245116964Sgrehan for (i = 0; i < nmem; i++) { 246179746Skevlo error = rman_manage_region(&sc->sc_mem_rman, mem[i]->pci_lo, 247179746Skevlo mem[i]->pci_lo + mem[i]->size_lo); 248179746Skevlo if (error) { 249179746Skevlo device_printf(dev, 250179746Skevlo "rman_manage_region() failed. error = %d\n", error); 251179746Skevlo return (error); 252116964Sgrehan } 253116964Sgrehan } 254116964Sgrehan 255186128Snwhitehorn ofw_bus_setup_iinfo(node, &sc->sc_pci_iinfo, sizeof(cell_t)); 256186128Snwhitehorn 257186128Snwhitehorn /* We need the number of interrupt cells to read the imap */ 258186128Snwhitehorn if (OF_getprop(node, "interrupt-parent", &iparent,sizeof(iparent)) <= 0) 259186128Snwhitehorn iparent = node; 260186128Snwhitehorn 261186128Snwhitehorn if (OF_getprop(iparent,"#interrupt-cells",&sc->sc_icells, 262186128Snwhitehorn sizeof(sc->sc_icells)) <= 0) 263186128Snwhitehorn sc->sc_icells = 1; 264186128Snwhitehorn 265116964Sgrehan device_add_child(dev, "pci", device_get_unit(dev)); 266116964Sgrehan return (bus_generic_attach(dev)); 267116964Sgrehan} 268116964Sgrehan 269116964Sgrehanstatic int 270116964Sgrehangrackle_maxslots(device_t dev) 271116964Sgrehan{ 272116964Sgrehan 273116964Sgrehan return (PCI_SLOTMAX); 274116964Sgrehan} 275116964Sgrehan 276116964Sgrehanstatic u_int32_t 277116964Sgrehangrackle_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg, 278116964Sgrehan int width) 279116964Sgrehan{ 280116964Sgrehan struct grackle_softc *sc; 281116964Sgrehan vm_offset_t caoff; 282116964Sgrehan u_int32_t retval = 0xffffffff; 283116964Sgrehan 284116964Sgrehan sc = device_get_softc(dev); 285116964Sgrehan caoff = sc->sc_data + (reg & 0x03); 286116964Sgrehan 287116964Sgrehan if (grackle_enable_config(sc, bus, slot, func, reg) != 0) { 288116964Sgrehan 289116964Sgrehan /* 290116964Sgrehan * Config probes to non-existent devices on the 291116964Sgrehan * secondary bus generates machine checks. Be sure 292116964Sgrehan * to catch these. 293116964Sgrehan */ 294116964Sgrehan if (bus > 0) { 295125688Sgrehan if (badaddr((void *)sc->sc_data, 4)) { 296116964Sgrehan return (retval); 297116964Sgrehan } 298116964Sgrehan } 299125688Sgrehan 300116964Sgrehan switch (width) { 301116964Sgrehan case 1: 302116964Sgrehan retval = (in8rb(caoff)); 303116964Sgrehan break; 304116964Sgrehan case 2: 305116964Sgrehan retval = (in16rb(caoff)); 306116964Sgrehan break; 307116964Sgrehan case 4: 308116964Sgrehan retval = (in32rb(caoff)); 309116964Sgrehan break; 310116964Sgrehan } 311116964Sgrehan } 312116964Sgrehan grackle_disable_config(sc); 313116964Sgrehan 314116964Sgrehan return (retval); 315116964Sgrehan} 316116964Sgrehan 317116964Sgrehanstatic void 318116964Sgrehangrackle_write_config(device_t dev, u_int bus, u_int slot, u_int func, 319116964Sgrehan u_int reg, u_int32_t val, int width) 320116964Sgrehan{ 321116964Sgrehan struct grackle_softc *sc; 322116964Sgrehan vm_offset_t caoff; 323116964Sgrehan 324116964Sgrehan sc = device_get_softc(dev); 325116964Sgrehan caoff = sc->sc_data + (reg & 0x03); 326116964Sgrehan 327116964Sgrehan if (grackle_enable_config(sc, bus, slot, func, reg)) { 328116964Sgrehan switch (width) { 329116964Sgrehan case 1: 330116964Sgrehan out8rb(caoff, val); 331116964Sgrehan (void)in8rb(caoff); 332116964Sgrehan break; 333116964Sgrehan case 2: 334116964Sgrehan out16rb(caoff, val); 335116964Sgrehan (void)in16rb(caoff); 336116964Sgrehan break; 337116964Sgrehan case 4: 338116964Sgrehan out32rb(caoff, val); 339116964Sgrehan (void)in32rb(caoff); 340116964Sgrehan break; 341116964Sgrehan } 342116964Sgrehan } 343116964Sgrehan grackle_disable_config(sc); 344116964Sgrehan} 345116964Sgrehan 346116964Sgrehanstatic int 347116964Sgrehangrackle_route_interrupt(device_t bus, device_t dev, int pin) 348116964Sgrehan{ 349186128Snwhitehorn struct grackle_softc *sc; 350186128Snwhitehorn struct ofw_pci_register reg; 351186128Snwhitehorn uint32_t pintr, mintr[2]; 352186128Snwhitehorn uint8_t maskbuf[sizeof(reg) + sizeof(pintr)]; 353116964Sgrehan 354186128Snwhitehorn sc = device_get_softc(bus); 355186128Snwhitehorn pintr = pin; 356186128Snwhitehorn if (ofw_bus_lookup_imap(ofw_bus_get_node(dev), &sc->sc_pci_iinfo, ®, 357186128Snwhitehorn sizeof(reg), &pintr, sizeof(pintr), &mintr, 358186128Snwhitehorn sizeof(mintr[0])*sc->sc_icells, maskbuf)) 359186128Snwhitehorn return (mintr[0]); 360186128Snwhitehorn 361186128Snwhitehorn /* Maybe it's a real interrupt, not an intpin */ 362186128Snwhitehorn if (pin > 4) 363186128Snwhitehorn return (pin); 364186128Snwhitehorn 365186128Snwhitehorn device_printf(bus, "could not route pin %d for device %d.%d\n", 366186128Snwhitehorn pin, pci_get_slot(dev), pci_get_function(dev)); 367186128Snwhitehorn return (PCI_INVALID_IRQ); 368116964Sgrehan} 369116964Sgrehan 370116964Sgrehanstatic int 371116964Sgrehangrackle_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 372116964Sgrehan{ 373116964Sgrehan struct grackle_softc *sc; 374116964Sgrehan 375116964Sgrehan sc = device_get_softc(dev); 376116964Sgrehan 377116964Sgrehan switch (which) { 378172394Smarius case PCIB_IVAR_DOMAIN: 379172394Smarius *result = 0; 380172394Smarius return (0); 381116964Sgrehan case PCIB_IVAR_BUS: 382116964Sgrehan *result = sc->sc_bus; 383116964Sgrehan return (0); 384116964Sgrehan } 385116964Sgrehan 386116964Sgrehan return (ENOENT); 387116964Sgrehan} 388116964Sgrehan 389116964Sgrehanstatic struct resource * 390116964Sgrehangrackle_alloc_resource(device_t bus, device_t child, int type, int *rid, 391116964Sgrehan u_long start, u_long end, u_long count, u_int flags) 392116964Sgrehan{ 393116964Sgrehan struct grackle_softc *sc; 394116964Sgrehan struct resource *rv; 395116964Sgrehan struct rman *rm; 396116964Sgrehan int needactivate; 397116964Sgrehan 398116964Sgrehan needactivate = flags & RF_ACTIVE; 399116964Sgrehan flags &= ~RF_ACTIVE; 400116964Sgrehan 401116964Sgrehan sc = device_get_softc(bus); 402116964Sgrehan 403116964Sgrehan switch (type) { 404116964Sgrehan case SYS_RES_MEMORY: 405116964Sgrehan rm = &sc->sc_mem_rman; 406116964Sgrehan break; 407116964Sgrehan 408116964Sgrehan case SYS_RES_IOPORT: 409116964Sgrehan rm = &sc->sc_io_rman; 410116964Sgrehan break; 411116964Sgrehan 412116964Sgrehan case SYS_RES_IRQ: 413116964Sgrehan return (bus_alloc_resource(bus, type, rid, start, end, count, 414116964Sgrehan flags)); 415125688Sgrehan 416116964Sgrehan default: 417116964Sgrehan device_printf(bus, "unknown resource request from %s\n", 418116964Sgrehan device_get_nameunit(child)); 419116964Sgrehan return (NULL); 420116964Sgrehan } 421116964Sgrehan 422116964Sgrehan rv = rman_reserve_resource(rm, start, end, count, flags, child); 423116964Sgrehan if (rv == NULL) { 424116964Sgrehan device_printf(bus, "failed to reserve resource for %s\n", 425116964Sgrehan device_get_nameunit(child)); 426116964Sgrehan return (NULL); 427116964Sgrehan } 428116964Sgrehan 429157895Simp rman_set_rid(rv, *rid); 430116964Sgrehan 431116964Sgrehan if (needactivate) { 432116964Sgrehan if (bus_activate_resource(child, type, *rid, rv) != 0) { 433116964Sgrehan device_printf(bus, 434116964Sgrehan "failed to activate resource for %s\n", 435116964Sgrehan device_get_nameunit(child)); 436116964Sgrehan rman_release_resource(rv); 437116964Sgrehan return (NULL); 438116964Sgrehan } 439116964Sgrehan } 440116964Sgrehan 441116964Sgrehan return (rv); 442116964Sgrehan} 443116964Sgrehan 444116964Sgrehanstatic int 445116964Sgrehangrackle_release_resource(device_t bus, device_t child, int type, int rid, 446116964Sgrehan struct resource *res) 447116964Sgrehan{ 448116964Sgrehan if (rman_get_flags(res) & RF_ACTIVE) { 449116964Sgrehan int error = bus_deactivate_resource(child, type, rid, res); 450116964Sgrehan if (error) 451116964Sgrehan return error; 452116964Sgrehan } 453116964Sgrehan 454116964Sgrehan return (rman_release_resource(res)); 455116964Sgrehan} 456116964Sgrehan 457116964Sgrehanstatic int 458116964Sgrehangrackle_activate_resource(device_t bus, device_t child, int type, int rid, 459116964Sgrehan struct resource *res) 460116964Sgrehan{ 461116964Sgrehan struct grackle_softc *sc; 462116964Sgrehan void *p; 463116964Sgrehan 464125688Sgrehan sc = device_get_softc(bus); 465116964Sgrehan 466116964Sgrehan if (type == SYS_RES_IRQ) { 467116964Sgrehan return (bus_activate_resource(bus, type, rid, res)); 468116964Sgrehan } 469116964Sgrehan if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) { 470116964Sgrehan vm_offset_t start; 471116964Sgrehan 472116964Sgrehan start = (vm_offset_t)rman_get_start(res); 473116964Sgrehan /* 474116964Sgrehan * For i/o-ports, convert the start address to the 475116964Sgrehan * MPC106 PCI i/o window 476116964Sgrehan */ 477116964Sgrehan if (type == SYS_RES_IOPORT) 478116964Sgrehan start += sc->sc_iostart; 479116964Sgrehan 480125688Sgrehan if (bootverbose) 481125688Sgrehan printf("grackle mapdev: start %x, len %ld\n", start, 482116964Sgrehan rman_get_size(res)); 483125688Sgrehan 484116964Sgrehan p = pmap_mapdev(start, (vm_size_t)rman_get_size(res)); 485116964Sgrehan if (p == NULL) 486116964Sgrehan return (ENOMEM); 487116964Sgrehan 488116964Sgrehan rman_set_virtual(res, p); 489174822Smarcel rman_set_bustag(res, &bs_le_tag); 490116964Sgrehan rman_set_bushandle(res, (u_long)p); 491116964Sgrehan } 492116964Sgrehan 493116964Sgrehan return (rman_activate_resource(res)); 494116964Sgrehan} 495116964Sgrehan 496116964Sgrehanstatic int 497116964Sgrehangrackle_deactivate_resource(device_t bus, device_t child, int type, int rid, 498116964Sgrehan struct resource *res) 499116964Sgrehan{ 500116964Sgrehan /* 501116964Sgrehan * If this is a memory resource, unmap it. 502116964Sgrehan */ 503116964Sgrehan if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) { 504116964Sgrehan u_int32_t psize; 505116964Sgrehan 506116964Sgrehan psize = rman_get_size(res); 507116964Sgrehan pmap_unmapdev((vm_offset_t)rman_get_virtual(res), psize); 508116964Sgrehan } 509116964Sgrehan 510116964Sgrehan return (rman_deactivate_resource(res)); 511116964Sgrehan} 512116964Sgrehan 513116964Sgrehan 514116964Sgrehanstatic int 515116964Sgrehangrackle_enable_config(struct grackle_softc *sc, u_int bus, u_int slot, 516116964Sgrehan u_int func, u_int reg) 517116964Sgrehan{ 518116964Sgrehan u_int32_t cfgval; 519116964Sgrehan 520116964Sgrehan /* 521116964Sgrehan * Unlike UniNorth, the format of the config word is the same 522116964Sgrehan * for local (0) and remote busses. 523116964Sgrehan */ 524116964Sgrehan cfgval = (bus << 16) | (slot << 11) | (func << 8) | (reg & 0xFC) 525116964Sgrehan | GRACKLE_CFG_ENABLE; 526125688Sgrehan 527116964Sgrehan out32rb(sc->sc_addr, cfgval); 528116964Sgrehan (void) in32rb(sc->sc_addr); 529116964Sgrehan 530116964Sgrehan return (1); 531116964Sgrehan} 532116964Sgrehan 533116964Sgrehanstatic void 534116964Sgrehangrackle_disable_config(struct grackle_softc *sc) 535116964Sgrehan{ 536116964Sgrehan /* 537116964Sgrehan * Clear the GRACKLE_CFG_ENABLE bit to prevent stray 538116964Sgrehan * accesses from causing config cycles 539116964Sgrehan */ 540116964Sgrehan out32rb(sc->sc_addr, 0); 541116964Sgrehan} 542116964Sgrehan 543183882Snwhitehornstatic phandle_t 544183882Snwhitehorngrackle_get_node(device_t bus, device_t dev) 545183882Snwhitehorn{ 546183882Snwhitehorn struct grackle_softc *sc; 547183882Snwhitehorn 548183882Snwhitehorn sc = device_get_softc(bus); 549183882Snwhitehorn /* We only have one child, the PCI bus, which needs our own node. */ 550183882Snwhitehorn 551183882Snwhitehorn return sc->sc_node; 552183882Snwhitehorn} 553183882Snwhitehorn 554116964Sgrehan/* 555116964Sgrehan * Driver to swallow Grackle host bridges from the PCI bus side. 556116964Sgrehan */ 557116964Sgrehanstatic int 558116964Sgrehangrackle_hb_probe(device_t dev) 559116964Sgrehan{ 560116964Sgrehan 561127703Sgrehan if (pci_get_devid(dev) == 0x00021057) { 562127703Sgrehan device_set_desc(dev, "Grackle Host to PCI bridge"); 563116964Sgrehan device_quiet(dev); 564127703Sgrehan return (0); 565116964Sgrehan } 566116964Sgrehan 567116964Sgrehan return (ENXIO); 568116964Sgrehan} 569116964Sgrehan 570116964Sgrehanstatic int 571116964Sgrehangrackle_hb_attach(device_t dev) 572116964Sgrehan{ 573116964Sgrehan 574116964Sgrehan return (0); 575116964Sgrehan} 576116964Sgrehan 577116964Sgrehanstatic device_method_t grackle_hb_methods[] = { 578116964Sgrehan /* Device interface */ 579116964Sgrehan DEVMETHOD(device_probe, grackle_hb_probe), 580116964Sgrehan DEVMETHOD(device_attach, grackle_hb_attach), 581116964Sgrehan 582116964Sgrehan { 0, 0 } 583116964Sgrehan}; 584116964Sgrehan 585116964Sgrehanstatic driver_t grackle_hb_driver = { 586116964Sgrehan "grackle_hb", 587116964Sgrehan grackle_hb_methods, 588116964Sgrehan 1, 589116964Sgrehan}; 590116964Sgrehanstatic devclass_t grackle_hb_devclass; 591116964Sgrehan 592116964SgrehanDRIVER_MODULE(grackle_hb, pci, grackle_hb_driver, grackle_hb_devclass, 0, 0); 593