diff options
Diffstat (limited to 'sys/dev/acpi/acpiprt.c')
| -rw-r--r-- | sys/dev/acpi/acpiprt.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/sys/dev/acpi/acpiprt.c b/sys/dev/acpi/acpiprt.c new file mode 100644 index 00000000000..a2c6fdcf259 --- /dev/null +++ b/sys/dev/acpi/acpiprt.c @@ -0,0 +1,214 @@ +/* $OpenBSD: acpiprt.c,v 1.1 2006/11/15 21:39:06 kettenis Exp $ */ +/* + * Copyright (c) 2006 Mark Kettenis <kettenis@openbsd.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <sys/param.h> +#include <sys/proc.h> +#include <sys/signalvar.h> +#include <sys/systm.h> +#include <sys/device.h> +#include <sys/malloc.h> + +#include <machine/bus.h> + +#include <dev/acpi/acpireg.h> +#include <dev/acpi/acpivar.h> +#include <dev/acpi/acpidev.h> +#include <dev/acpi/amltypes.h> +#include <dev/acpi/dsdt.h> + +#include <dev/pci/pcivar.h> +#include <dev/pci/ppbreg.h> + +#include <machine/i82093reg.h> +#include <machine/i82093var.h> + +#include <machine/mpbiosvar.h> + +int acpiprt_match(struct device *, void *, void *); +void acpiprt_attach(struct device *, struct device *, void *); + +struct acpiprt_softc { + struct device sc_dev; + + struct acpi_softc *sc_acpi; + struct aml_node *sc_devnode; + + int sc_bus; +}; + +struct cfattach acpiprt_ca = { + sizeof(struct acpiprt_softc), acpiprt_match, acpiprt_attach +}; + +struct cfdriver acpiprt_cd = { + NULL, "acpiprt", DV_DULL +}; + +void acpiprt_prt_add(struct acpiprt_softc *, struct aml_value *); +int acpiprt_getpcibus(struct acpiprt_softc *, struct aml_node *); + +int +acpiprt_match(struct device *parent, void *match, void *aux) +{ + struct acpi_attach_args *aa = aux; + struct cfdata *cf = match; + + /* sanity */ + if (aa->aaa_name == NULL || + strcmp(aa->aaa_name, cf->cf_driver->cd_name) != 0 || + aa->aaa_table != NULL) + return (0); + + return (1); +} + +void +acpiprt_attach(struct device *parent, struct device *self, void *aux) +{ + struct acpiprt_softc *sc = (struct acpiprt_softc *)self; + struct acpi_attach_args *aa = aux; + struct aml_value res; + int i; + + sc->sc_acpi = (struct acpi_softc *)parent; + sc->sc_devnode = aa->aaa_node->child; + sc->sc_bus = acpiprt_getpcibus(sc, sc->sc_devnode); + + printf(": bus %d (%s)", sc->sc_bus, sc->sc_devnode->parent->name); + + if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "_PRT", 0, NULL, &res)) { + printf(": no PCI interrupt routing table\n"); + return; + } + + if (res.type != AML_OBJTYPE_PACKAGE) { + printf(": _PRT is not a package\n"); + return; + } + + printf("\n"); + + for (i = 0; i < res.length; i++) + acpiprt_prt_add(sc, res.v_package[i]); +} + +void +acpiprt_prt_add(struct acpiprt_softc *sc, struct aml_value *v) +{ + struct aml_node *node; + struct aml_value res; + int addr, pin, irq; + struct mp_intr_map *map; + struct ioapic_softc *apic; + + if (v->type != AML_OBJTYPE_PACKAGE || v->length != 4) { + printf("invalid mapping object\n"); + return; + } + + addr = aml_val2int(v->v_package[0]); + pin = aml_val2int(v->v_package[1]); + + if (v->v_package[2]->type == AML_OBJTYPE_NAMEREF || + v->v_package[2]->type == AML_OBJTYPE_DEVICE) { + if (v->v_package[2]->type == AML_OBJTYPE_NAMEREF) + node = aml_searchname(sc->sc_devnode, + v->v_package[2]->v_nameref); + else + node = v->v_package[2]->node; + if (node == NULL) { + printf(" invalid node!\n"); + return; + } + + if (aml_evalname(sc->sc_acpi, node, "_STA", 0, NULL, NULL)) { + printf("no _STA method\n"); + } + + if (aml_evalname(sc->sc_acpi, node, "_CRS", 0, NULL, &res)) { + printf("no _CRS method\n"); + } + + if (res.type != AML_OBJTYPE_BUFFER || res.length < 6) { + printf("invalid _CRS object\n"); + return; + } + + if ((res.v_buffer[0] >> 3) == 0x4) { + irq = res.v_buffer[1] + (res.v_buffer[2] << 8); + irq = ffs(irq) - 1; + } + } else + irq = aml_val2int(v->v_package[3]); + + apic = ioapic_find_bybase(irq); + + map = malloc(sizeof (struct mp_intr_map), M_DEVBUF, M_NOWAIT); + if (map == NULL) + return; + +#if ACPI_DEBUG + printf("%s: addr 0x%x pin %d irq %d\n", DEVNAME(sc), addr, pin, irq); +#endif + + memset(map, 0, sizeof *map); + map->bus_pin = ((addr >> 14) & 0x7c) | (pin & 0x3); + map->redir = IOAPIC_REDLO_ACTLO | IOAPIC_REDLO_LEVEL; + map->redir |= (IOAPIC_REDLO_DEL_LOPRI << IOAPIC_REDLO_DEL_SHIFT); + + map->ioapic_ih = APIC_INT_VIA_APIC | + ((apic->sc_apicid << APIC_INT_APIC_SHIFT) | (irq << APIC_INT_PIN_SHIFT)); + + apic->sc_pins[irq].ip_map = map; + + map->next = mp_busses[sc->sc_bus].mb_intrs; + mp_busses[sc->sc_bus].mb_intrs = map; +} + +int +acpiprt_getpcibus(struct acpiprt_softc *sc, struct aml_node *node) +{ + struct aml_node *parent = node->parent; + struct aml_value res; + pci_chipset_tag_t pc = NULL; + pcitag_t tag; + pcireg_t reg; + int bus, dev, func; + + if (parent == NULL) + return 0; + + if (aml_evalname(sc->sc_acpi, parent, "_ADR", 0, NULL, &res) == 0) { + bus = acpiprt_getpcibus(sc, parent); + dev = ACPI_PCI_DEV(aml_val2int(&res) << 16); + func = ACPI_PCI_FN(aml_val2int(&res) << 16); + tag = pci_make_tag(pc, bus, dev, func); + + reg = pci_conf_read(pc, tag, PCI_CLASS_REG); + if (PCI_CLASS(reg) == PCI_CLASS_BRIDGE && + PCI_SUBCLASS(reg) == PCI_SUBCLASS_BRIDGE_PCI) { + reg = pci_conf_read(pc, tag, PPB_REG_BUSINFO); + return PPB_BUSINFO_SECONDARY(reg); + } + } + + if (aml_evalname(sc->sc_acpi, parent, "_BBN", 0, NULL, &res) == 0) { + return aml_val2int(&res); + } + + return 0; +} |