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/*- * Copyright (c) 1999, 2000 Matthew R. Green * Copyright (c) 2009 by Marius Strobl <marius@FreeBSD.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: NetBSD: ebus.c,v 1.52 2008/05/29 14:51:26 mrg Exp */ /*- * Copyright (c) 2001 Thomas Moestl <tmm@FreeBSD.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/sparc64/ebus/ebus.c 230687 2012-01-28 23:53:06Z marius $"); /* * Driver for JBus to EBus and PCI to EBus bridges */ #include <sys/param.h> #include <sys/systm.h> #include <sys/bus.h> #include <sys/kernel.h> #include <sys/malloc.h> #include <sys/module.h> #include <sys/rman.h> #include <dev/ofw/ofw_bus.h> #include <dev/ofw/ofw_bus_subr.h> #include <dev/ofw/openfirm.h> #include <machine/bus.h> #ifndef SUN4V #include <machine/bus_common.h> #endif #include <machine/intr_machdep.h> #include <machine/resource.h> #include <dev/pci/pcireg.h> #include <dev/pci/pcivar.h> #include <sparc64/pci/ofw_pci.h> /* * The register, interrupt map and for the PCI variant also the ranges * properties are identical to the ISA ones. */ #include <sparc64/isa/ofw_isa.h> struct ebus_nexus_ranges { uint32_t child_hi; uint32_t child_lo; uint32_t phys_hi; uint32_t phys_lo; uint32_t size; }; struct ebus_devinfo { struct ofw_bus_devinfo edi_obdinfo; struct resource_list edi_rl; }; struct ebus_rinfo { int eri_rtype; struct rman eri_rman; struct resource *eri_res; }; struct ebus_softc { void *sc_range; struct ebus_rinfo *sc_rinfo; u_int sc_flags; #define EBUS_PCI (1 << 0) int sc_nrange; struct ofw_bus_iinfo sc_iinfo; #ifndef SUN4V uint32_t sc_ign; #endif }; static device_probe_t ebus_nexus_probe; static device_attach_t ebus_nexus_attach; static device_probe_t ebus_pci_probe; static device_attach_t ebus_pci_attach; static bus_print_child_t ebus_print_child; static bus_probe_nomatch_t ebus_probe_nomatch; static bus_alloc_resource_t ebus_alloc_resource; static bus_activate_resource_t ebus_activate_resource; static bus_adjust_resource_t ebus_adjust_resource; static bus_release_resource_t ebus_release_resource; static bus_setup_intr_t ebus_setup_intr; static bus_get_resource_list_t ebus_get_resource_list; static ofw_bus_get_devinfo_t ebus_get_devinfo; static int ebus_attach(device_t dev, struct ebus_softc *sc, phandle_t node); static struct ebus_devinfo *ebus_setup_dinfo(device_t dev, struct ebus_softc *sc, phandle_t node); static void ebus_destroy_dinfo(struct ebus_devinfo *edi); static int ebus_print_res(struct ebus_devinfo *edi); static devclass_t ebus_devclass; static device_method_t ebus_nexus_methods[] = { /* Device interface */ DEVMETHOD(device_probe, ebus_nexus_probe), DEVMETHOD(device_attach, ebus_nexus_attach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD(device_suspend, bus_generic_suspend), DEVMETHOD(device_resume, bus_generic_resume), /* Bus interface */ DEVMETHOD(bus_print_child, ebus_print_child), DEVMETHOD(bus_probe_nomatch, ebus_probe_nomatch), DEVMETHOD(bus_alloc_resource, ebus_alloc_resource), DEVMETHOD(bus_activate_resource, ebus_activate_resource), DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), DEVMETHOD(bus_adjust_resource, ebus_adjust_resource), DEVMETHOD(bus_release_resource, ebus_release_resource), DEVMETHOD(bus_setup_intr, ebus_setup_intr), DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), DEVMETHOD(bus_get_resource_list, ebus_get_resource_list), DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str), /* ofw_bus interface */ DEVMETHOD(ofw_bus_get_devinfo, ebus_get_devinfo), DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), DEVMETHOD_END }; static driver_t ebus_nexus_driver = { "ebus", ebus_nexus_methods, sizeof(struct ebus_softc), }; /* * NB: we rely on the interrupt controllers of the accompanying PCI-Express * bridge to be registered as the nexus variant of the EBus bridges doesn't * employ its own one. */ EARLY_DRIVER_MODULE(ebus, nexus, ebus_nexus_driver, ebus_devclass, 0, 0, BUS_PASS_BUS + 1); MODULE_DEPEND(ebus, nexus, 1, 1, 1); static device_method_t ebus_pci_methods[] = { /* Device interface */ DEVMETHOD(device_probe, ebus_pci_probe), DEVMETHOD(device_attach, ebus_pci_attach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD(device_suspend, bus_generic_suspend), DEVMETHOD(device_resume, bus_generic_resume), /* Bus interface */ DEVMETHOD(bus_print_child, ebus_print_child), DEVMETHOD(bus_probe_nomatch, ebus_probe_nomatch), DEVMETHOD(bus_alloc_resource, ebus_alloc_resource), DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), DEVMETHOD(bus_release_resource, ebus_release_resource), DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), DEVMETHOD(bus_get_resource_list, ebus_get_resource_list), DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str), /* ofw_bus interface */ DEVMETHOD(ofw_bus_get_devinfo, ebus_get_devinfo), DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), DEVMETHOD_END }; static driver_t ebus_pci_driver = { "ebus", ebus_pci_methods, sizeof(struct ebus_softc), }; EARLY_DRIVER_MODULE(ebus, pci, ebus_pci_driver, ebus_devclass, 0, 0, BUS_PASS_BUS); MODULE_DEPEND(ebus, pci, 1, 1, 1); MODULE_VERSION(ebus, 1); static int ebus_nexus_probe(device_t dev) { const char* compat; compat = ofw_bus_get_compat(dev); if (compat != NULL && strcmp(ofw_bus_get_name(dev), "ebus") == 0 && strcmp(compat, "jbus-ebus") == 0) { device_set_desc(dev, "JBus-EBus bridge"); return (BUS_PROBE_GENERIC); } return (ENXIO); } static int ebus_pci_probe(device_t dev) { if (pci_get_class(dev) != PCIC_BRIDGE || pci_get_vendor(dev) != 0x108e || strcmp(ofw_bus_get_name(dev), "ebus") != 0) return (ENXIO); if (pci_get_device(dev) == 0x1000) device_set_desc(dev, "PCI-EBus2 bridge"); else if (pci_get_device(dev) == 0x1100) device_set_desc(dev, "PCI-EBus3 bridge"); else return (ENXIO); return (BUS_PROBE_GENERIC); } static int ebus_nexus_attach(device_t dev) { struct ebus_softc *sc; phandle_t node; sc = device_get_softc(dev); node = ofw_bus_get_node(dev); #ifndef SUN4V if (OF_getprop(node, "portid", &sc->sc_ign, sizeof(sc->sc_ign)) == -1) { device_printf(dev, "could not determine IGN"); return (ENXIO); } #endif sc->sc_nrange = OF_getprop_alloc(node, "ranges", sizeof(struct ebus_nexus_ranges), &sc->sc_range); if (sc->sc_nrange == -1) { printf("%s: could not get ranges property\n", __func__); return (ENXIO); } return (ebus_attach(dev, sc, node)); } static int ebus_pci_attach(device_t dev) { struct ebus_softc *sc; struct ebus_rinfo *eri; struct resource *res; phandle_t node; int i, rnum, rid; sc = device_get_softc(dev); sc->sc_flags |= EBUS_PCI; pci_write_config(dev, PCIR_COMMAND, pci_read_config(dev, PCIR_COMMAND, 2) | PCIM_CMD_SERRESPEN | PCIM_CMD_PERRESPEN | PCIM_CMD_BUSMASTEREN | PCIM_CMD_MEMEN, 2); pci_write_config(dev, PCIR_CACHELNSZ, 16 /* 64 bytes */, 1); pci_write_config(dev, PCIR_LATTIMER, 64 /* 64 PCI cycles */, 1); node = ofw_bus_get_node(dev); sc->sc_nrange = OF_getprop_alloc(node, "ranges", sizeof(struct isa_ranges), &sc->sc_range); if (sc->sc_nrange == -1) { printf("%s: could not get ranges property\n", __func__); return (ENXIO); } sc->sc_rinfo = malloc(sizeof(*sc->sc_rinfo) * sc->sc_nrange, M_DEVBUF, M_WAITOK | M_ZERO); /* For every range, there must be a matching resource. */ for (rnum = 0; rnum < sc->sc_nrange; rnum++) { eri = &sc->sc_rinfo[rnum]; eri->eri_rtype = ofw_isa_range_restype( &((struct isa_ranges *)sc->sc_range)[rnum]); rid = PCIR_BAR(rnum); res = bus_alloc_resource_any(dev, eri->eri_rtype, &rid, RF_ACTIVE); if (res == NULL) { printf("%s: failed to allocate range resource!\n", __func__); goto fail; } eri->eri_res = res; eri->eri_rman.rm_type = RMAN_ARRAY; eri->eri_rman.rm_descr = "EBus range"; if (rman_init_from_resource(&eri->eri_rman, res) != 0) { printf("%s: failed to initialize rman!", __func__); goto fail; } } return (ebus_attach(dev, sc, node)); fail: for (i = rnum; i >= 0; i--) { eri = &sc->sc_rinfo[i]; if (i < rnum) rman_fini(&eri->eri_rman); if (eri->eri_res != 0) { bus_release_resource(dev, eri->eri_rtype, PCIR_BAR(rnum), eri->eri_res); } } free(sc->sc_rinfo, M_DEVBUF); free(sc->sc_range, M_OFWPROP); return (ENXIO); } static int ebus_attach(device_t dev, struct ebus_softc *sc, phandle_t node) { struct ebus_devinfo *edi; device_t cdev; ofw_bus_setup_iinfo(node, &sc->sc_iinfo, sizeof(ofw_isa_intr_t)); /* * Now attach our children. */ for (node = OF_child(node); node > 0; node = OF_peer(node)) { if ((edi = ebus_setup_dinfo(dev, sc, node)) == NULL) continue; if ((cdev = device_add_child(dev, NULL, -1)) == NULL) { device_printf(dev, "<%s>: device_add_child failed\n", edi->edi_obdinfo.obd_name); ebus_destroy_dinfo(edi); continue; } device_set_ivars(cdev, edi); } return (bus_generic_attach(dev)); } static int ebus_print_child(device_t dev, device_t child) { int retval; retval = bus_print_child_header(dev, child); retval += ebus_print_res(device_get_ivars(child)); retval += bus_print_child_footer(dev, child); return (retval); } static void ebus_probe_nomatch(device_t dev, device_t child) { device_printf(dev, "<%s>", ofw_bus_get_name(child)); ebus_print_res(device_get_ivars(child)); printf(" (no driver attached)\n"); } static struct resource * ebus_alloc_resource(device_t bus, device_t child, int type, int *rid, u_long start, u_long end, u_long count, u_int flags) { struct ebus_softc *sc; struct resource_list *rl; struct resource_list_entry *rle = NULL; struct resource *res; struct ebus_rinfo *eri; struct ebus_nexus_ranges *enr; uint64_t cend, cstart, offset; int i, isdefault, passthrough, ridx; isdefault = (start == 0UL && end == ~0UL); passthrough = (device_get_parent(child) != bus); sc = device_get_softc(bus); rl = BUS_GET_RESOURCE_LIST(bus, child); switch (type) { case SYS_RES_MEMORY: KASSERT(!(isdefault && passthrough), ("%s: passthrough of default allocation", __func__)); if (!passthrough) { rle = resource_list_find(rl, type, *rid); if (rle == NULL) return (NULL); KASSERT(rle->res == NULL, ("%s: resource entry is busy", __func__)); if (isdefault) { start = rle->start; count = ulmax(count, rle->count); end = ulmax(rle->end, start + count - 1); } } res = NULL; if ((sc->sc_flags & EBUS_PCI) != 0) { /* * Map EBus ranges to PCI ranges. This may include * changing the allocation type. */ (void)ofw_isa_range_map(sc->sc_range, sc->sc_nrange, &start, &end, &ridx); eri = &sc->sc_rinfo[ridx]; res = rman_reserve_resource(&eri->eri_rman, start, end, count, flags & ~RF_ACTIVE, child); if (res == NULL) return (NULL); rman_set_rid(res, *rid); if ((flags & RF_ACTIVE) != 0 && bus_activate_resource( child, type, *rid, res) != 0) { rman_release_resource(res); return (NULL); } } else { /* Map EBus ranges to nexus ranges. */ for (i = 0; i < sc->sc_nrange; i++) { enr = &((struct ebus_nexus_ranges *) sc->sc_range)[i]; cstart = (((uint64_t)enr->child_hi) << 32) | enr->child_lo; cend = cstart + enr->size - 1; if (start >= cstart && end <= cend) { offset = (((uint64_t)enr->phys_hi) << 32) | enr->phys_lo; start += offset - cstart; end += offset - cstart; res = bus_generic_alloc_resource(bus, child, type, rid, start, end, count, flags); break; } } } if (!passthrough) rle->res = res; return (res); case SYS_RES_IRQ: return (resource_list_alloc(rl, bus, child, type, rid, start, end, count, flags)); } return (NULL); } static int ebus_activate_resource(device_t bus, device_t child, int type, int rid, struct resource *res) { struct ebus_softc *sc; struct ebus_rinfo *eri; bus_space_tag_t bt; bus_space_handle_t bh; int i, rv; sc = device_get_softc(bus); if ((sc->sc_flags & EBUS_PCI) != 0 && type == SYS_RES_MEMORY) { for (i = 0; i < sc->sc_nrange; i++) { eri = &sc->sc_rinfo[i]; if (rman_is_region_manager(res, &eri->eri_rman) != 0) { bt = rman_get_bustag(eri->eri_res); rv = bus_space_subregion(bt, rman_get_bushandle(eri->eri_res), rman_get_start(res) - rman_get_start(eri->eri_res), rman_get_size(res), &bh); if (rv != 0) return (rv); rman_set_bustag(res, bt); rman_set_bushandle(res, bh); return (rman_activate_resource(res)); } } return (EINVAL); } return (bus_generic_activate_resource(bus, child, type, rid, res)); } static int ebus_adjust_resource(device_t bus __unused, device_t child __unused, int type __unused, struct resource *res __unused, u_long start __unused, u_long end __unused) { return (ENXIO); } static int ebus_release_resource(device_t bus, device_t child, int type, int rid, struct resource *res) { struct ebus_softc *sc; struct resource_list *rl; struct resource_list_entry *rle; int passthrough, rv; passthrough = (device_get_parent(child) != bus); rl = BUS_GET_RESOURCE_LIST(bus, child); sc = device_get_softc(bus); if ((sc->sc_flags & EBUS_PCI) != 0 && type == SYS_RES_MEMORY) { if ((rman_get_flags(res) & RF_ACTIVE) != 0 ){ rv = bus_deactivate_resource(child, type, rid, res); if (rv != 0) return (rv); } rv = rman_release_resource(res); if (rv != 0) return (rv); if (!passthrough) { rle = resource_list_find(rl, type, rid); KASSERT(rle != NULL, ("%s: resource entry not found!", __func__)); KASSERT(rle->res != NULL, ("%s: resource entry is not busy", __func__)); rle->res = NULL; } return (0); } return (resource_list_release(rl, bus, child, type, rid, res)); } static int ebus_setup_intr(device_t dev, device_t child, struct resource *ires, int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg, void **cookiep) { #ifndef SUN4V struct ebus_softc *sc; u_long vec; sc = device_get_softc(dev); if ((sc->sc_flags & EBUS_PCI) == 0) { /* * Make sure the vector is fully specified. This isn't * necessarily the case with the PCI variant. */ vec = rman_get_start(ires); if (INTIGN(vec) != sc->sc_ign) { device_printf(dev, "invalid interrupt vector 0x%lx\n", vec); return (EINVAL); } /* * As we rely on the interrupt controllers of the * accompanying PCI-Express bridge ensure at least * something is registered for this vector. */ if (intr_vectors[vec].iv_ic == NULL) { device_printf(dev, "invalid interrupt controller for vector 0x%lx\n", vec); return (EINVAL); } } #endif return (bus_generic_setup_intr(dev, child, ires, flags, filt, intr, arg, cookiep)); } static struct resource_list * ebus_get_resource_list(device_t dev, device_t child) { struct ebus_devinfo *edi; edi = device_get_ivars(child); return (&edi->edi_rl); } static const struct ofw_bus_devinfo * ebus_get_devinfo(device_t bus, device_t dev) { struct ebus_devinfo *edi; edi = device_get_ivars(dev); return (&edi->edi_obdinfo); } static struct ebus_devinfo * ebus_setup_dinfo(device_t dev, struct ebus_softc *sc, phandle_t node) { struct isa_regs reg, *regs; ofw_isa_intr_t intr, *intrs; struct ebus_devinfo *edi; uint64_t start; uint32_t rintr; int i, nintr, nreg, rv; uint8_t maskbuf[sizeof(reg) + sizeof(intr)]; edi = malloc(sizeof(*edi), M_DEVBUF, M_ZERO | M_WAITOK); if (ofw_bus_gen_setup_devinfo(&edi->edi_obdinfo, node) != 0) { free(edi, M_DEVBUF); return (NULL); } resource_list_init(&edi->edi_rl); nreg = OF_getprop_alloc(node, "reg", sizeof(*regs), (void **)®s); if (nreg == -1) { device_printf(dev, "<%s>: incomplete\n", edi->edi_obdinfo.obd_name); ebus_destroy_dinfo(edi); return (NULL); } for (i = 0; i < nreg; i++) { start = ISA_REG_PHYS(regs + i); (void)resource_list_add(&edi->edi_rl, SYS_RES_MEMORY, i, start, start + regs[i].size - 1, regs[i].size); } free(regs, M_OFWPROP); nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intrs), (void **)&intrs); if (nintr == -1) return (edi); for (i = 0; i < nintr; i++) { rv = 0; if ((sc->sc_flags & EBUS_PCI) != 0) { rintr = ofw_isa_route_intr(dev, node, &sc->sc_iinfo, intrs[i]); } else { intr = intrs[i]; rv = ofw_bus_lookup_imap(node, &sc->sc_iinfo, ®, sizeof(reg), &intr, sizeof(intr), &rintr, sizeof(rintr), NULL, maskbuf); #ifndef SUN4V if (rv != 0) rintr = INTMAP_VEC(sc->sc_ign, rintr); #endif } if ((sc->sc_flags & EBUS_PCI) == 0 ? rv == 0 : rintr == PCI_INVALID_IRQ) { device_printf(dev, "<%s>: could not map EBus interrupt %d\n", edi->edi_obdinfo.obd_name, intrs[i]); continue; } (void)resource_list_add(&edi->edi_rl, SYS_RES_IRQ, i, rintr, rintr, 1); } free(intrs, M_OFWPROP); return (edi); } static void ebus_destroy_dinfo(struct ebus_devinfo *edi) { resource_list_free(&edi->edi_rl); ofw_bus_gen_destroy_devinfo(&edi->edi_obdinfo); free(edi, M_DEVBUF); } static int ebus_print_res(struct ebus_devinfo *edi) { int retval; retval = 0; retval += resource_list_print_type(&edi->edi_rl, "addr", SYS_RES_MEMORY, "%#lx"); retval += resource_list_print_type(&edi->edi_rl, "irq", SYS_RES_IRQ, "%ld"); return (retval); }