/* $OpenBSD: acpiprt.c,v 1.51 2021/03/10 21:49:55 patrick Exp $ */ /* * Copyright (c) 2006 Mark Kettenis * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ioapic.h" struct acpiprt_irq { int _int; int _shr; int _ll; int _he; }; struct acpiprt_map { int bus, dev; int pin; int irq; struct acpiprt_softc *sc; struct aml_node *node; SIMPLEQ_ENTRY(acpiprt_map) list; }; SIMPLEQ_HEAD(, acpiprt_map) acpiprt_map_list = SIMPLEQ_HEAD_INITIALIZER(acpiprt_map_list); int acpiprt_match(struct device *, void *, void *); void acpiprt_attach(struct device *, struct device *, void *); int acpiprt_getirq(int, union acpi_resource *, void *); int acpiprt_chooseirq(int, union acpi_resource *, 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 *); void acpiprt_route_interrupt(int bus, int dev, int pin); 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; sc->sc_bus = acpiprt_getpcibus(sc, sc->sc_devnode); printf(": bus %d (%s)", sc->sc_bus, sc->sc_devnode->parent->name); if (sc->sc_bus == -1) { printf("\n"); return; } if (aml_evalnode(sc->sc_acpi, sc->sc_devnode, 0, NULL, &res)) { printf(": no PCI interrupt routing table\n"); return; } if (res.type != AML_OBJTYPE_PACKAGE) { printf(": _PRT is not a package\n"); aml_freevalue(&res); return; } printf("\n"); for (i = 0; i < res.length; i++) acpiprt_prt_add(sc, res.v_package[i]); aml_freevalue(&res); } int acpiprt_getirq(int crsidx, union acpi_resource *crs, void *arg) { struct acpiprt_irq *irq = arg; int typ, len; irq->_shr = 0; irq->_ll = 0; irq->_he = 1; typ = AML_CRSTYPE(crs); len = AML_CRSLEN(crs); switch (typ) { case SR_IRQ: irq->_int= ffs(letoh16(crs->sr_irq.irq_mask)) - 1; if (len > 2) { irq->_shr = (crs->sr_irq.irq_flags & SR_IRQ_SHR); irq->_ll = (crs->sr_irq.irq_flags & SR_IRQ_POLARITY); irq->_he = (crs->sr_irq.irq_flags & SR_IRQ_MODE); } break; case LR_EXTIRQ: irq->_int = letoh32(crs->lr_extirq.irq[0]); irq->_shr = (crs->lr_extirq.flags & LR_EXTIRQ_SHR); irq->_ll = (crs->lr_extirq.flags & LR_EXTIRQ_POLARITY); irq->_he = (crs->lr_extirq.flags & LR_EXTIRQ_MODE); break; default: printf("unknown interrupt: %x\n", typ); } return (0); } int acpiprt_pri[16] = { 0, /* 8254 Counter 0 */ 1, /* Keyboard */ 0, /* 8259 Slave */ 2, /* Serial Port A */ 2, /* Serial Port B */ 5, /* Parallel Port / Generic */ 2, /* Floppy Disk */ 4, /* Parallel Port / Generic */ 1, /* RTC */ 6, /* Generic */ 7, /* Generic */ 7, /* Generic */ 1, /* Mouse */ 0, /* FPU */ 2, /* Primary IDE */ 3 /* Secondary IDE */ }; int acpiprt_chooseirq(int crsidx, union acpi_resource *crs, void *arg) { struct acpiprt_irq *irq = arg; int typ, len, i, pri = -1; irq->_shr = 0; irq->_ll = 0; irq->_he = 1; typ = AML_CRSTYPE(crs); len = AML_CRSLEN(crs); switch (typ) { case SR_IRQ: for (i = 0; i < sizeof(crs->sr_irq.irq_mask) * 8; i++) { if (crs->sr_irq.irq_mask & (1 << i) && acpiprt_pri[i] > pri) { irq->_int = i; pri = acpiprt_pri[irq->_int]; } } if (len > 2) { irq->_shr = (crs->sr_irq.irq_flags & SR_IRQ_SHR); irq->_ll = (crs->sr_irq.irq_flags & SR_IRQ_POLARITY); irq->_he = (crs->sr_irq.irq_flags & SR_IRQ_MODE); } break; case LR_EXTIRQ: /* First try non-8259 interrupts. */ for (i = 0; i < crs->lr_extirq.irq_count; i++) { if (crs->lr_extirq.irq[i] > 15) { irq->_int = crs->lr_extirq.irq[i]; return (0); } } for (i = 0; i < crs->lr_extirq.irq_count; i++) { if (acpiprt_pri[crs->lr_extirq.irq[i]] > pri) { irq->_int = crs->lr_extirq.irq[i]; pri = acpiprt_pri[irq->_int]; } } irq->_shr = (crs->lr_extirq.flags & LR_EXTIRQ_SHR); irq->_ll = (crs->lr_extirq.flags & LR_EXTIRQ_POLARITY); irq->_he = (crs->lr_extirq.flags & LR_EXTIRQ_MODE); break; default: printf("unknown interrupt: %x\n", typ); } return (0); } void acpiprt_prt_add(struct acpiprt_softc *sc, struct aml_value *v) { struct aml_node *node; struct aml_value res, *pp; struct acpiprt_irq irq; u_int64_t addr; int pin; int64_t sta; #if NIOAPIC > 0 struct mp_intr_map *map; struct ioapic_softc *apic; #endif pci_chipset_tag_t pc = NULL; pcitag_t tag; pcireg_t reg; int bus, dev, func, nfuncs; struct acpiprt_map *p; 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 (pin > 3) { return; } pp = v->v_package[2]; if (pp->type == AML_OBJTYPE_NAMEREF) { node = aml_searchrel(sc->sc_devnode, aml_getname(pp->v_nameref)); if (node == NULL) { printf("Invalid device\n"); return; } pp = node->value; } if (pp->type == AML_OBJTYPE_OBJREF) { pp = pp->v_objref.ref; } if (pp->type == AML_OBJTYPE_DEVICE) { node = pp->node; sta = acpi_getsta(sc->sc_acpi, node); if ((sta & STA_PRESENT) == 0) return; if (aml_evalname(sc->sc_acpi, node, "_CRS", 0, NULL, &res)) { printf("no _CRS method\n"); return; } if (res.type != AML_OBJTYPE_BUFFER || res.length < 5) { printf("invalid _CRS object\n"); aml_freevalue(&res); return; } aml_parse_resource(&res, acpiprt_getirq, &irq); aml_freevalue(&res); /* Pick a new IRQ if necessary. */ if ((irq._int == 0 || irq._int == 2 || irq._int == 13) && !aml_evalname(sc->sc_acpi, node, "_PRS", 0, NULL, &res)){ aml_parse_resource(&res, acpiprt_chooseirq, &irq); aml_freevalue(&res); } if ((p = malloc(sizeof(*p), M_ACPI, M_NOWAIT)) == NULL) return; p->bus = sc->sc_bus; p->dev = ACPI_PCI_DEV(addr << 16); p->pin = pin; p->irq = irq._int; p->sc = sc; p->node = node; SIMPLEQ_INSERT_TAIL(&acpiprt_map_list, p, list); } else { irq._int = aml_val2int(v->v_package[3]); irq._shr = 1; irq._ll = 1; irq._he = 0; } #ifdef ACPI_DEBUG printf("%s: %s addr 0x%llx pin %d irq %d\n", DEVNAME(sc), aml_nodename(pp->node), addr, pin, irq._int); #endif #if NIOAPIC > 0 if (nioapics > 0) { apic = ioapic_find_bybase(irq._int); if (apic == NULL) { printf("%s: no apic found for irq %d\n", DEVNAME(sc), irq._int); return; } map = malloc(sizeof(*map), M_DEVBUF, M_NOWAIT | M_ZERO); if (map == NULL) return; map->ioapic = apic; map->ioapic_pin = irq._int - apic->sc_apic_vecbase; map->bus_pin = ((addr >> 14) & 0x7c) | (pin & 0x3); if (irq._ll) map->flags |= (MPS_INTPO_ACTLO << MPS_INTPO_SHIFT); else map->flags |= (MPS_INTPO_ACTHI << MPS_INTPO_SHIFT); if (irq._he) map->flags |= (MPS_INTTR_EDGE << MPS_INTTR_SHIFT); else map->flags |= (MPS_INTTR_LEVEL << MPS_INTTR_SHIFT); map->redir = (IOAPIC_REDLO_DEL_LOPRI << IOAPIC_REDLO_DEL_SHIFT); switch ((map->flags >> MPS_INTPO_SHIFT) & MPS_INTPO_MASK) { case MPS_INTPO_DEF: case MPS_INTPO_ACTLO: map->redir |= IOAPIC_REDLO_ACTLO; break; } switch ((map->flags >> MPS_INTTR_SHIFT) & MPS_INTTR_MASK) { case MPS_INTTR_DEF: case MPS_INTTR_LEVEL: map->redir |= IOAPIC_REDLO_LEVEL; break; } map->ioapic_ih = APIC_INT_VIA_APIC | ((apic->sc_apicid << APIC_INT_APIC_SHIFT) | (map->ioapic_pin << APIC_INT_PIN_SHIFT)); apic->sc_pins[map->ioapic_pin].ip_map = map; map->next = mp_busses[sc->sc_bus].mb_intrs; mp_busses[sc->sc_bus].mb_intrs = map; return; } #endif bus = sc->sc_bus; dev = ACPI_PCI_DEV(addr << 16); tag = pci_make_tag(pc, bus, dev, 0); reg = pci_conf_read(pc, tag, PCI_BHLC_REG); if (PCI_HDRTYPE_MULTIFN(reg)) nfuncs = 8; else nfuncs = 1; for (func = 0; func < nfuncs; func++) { tag = pci_make_tag(pc, bus, dev, func); reg = pci_conf_read(pc, tag, PCI_INTERRUPT_REG); if (PCI_INTERRUPT_PIN(reg) == pin + 1) { reg &= ~(PCI_INTERRUPT_LINE_MASK << PCI_INTERRUPT_LINE_SHIFT); reg |= irq._int << PCI_INTERRUPT_LINE_SHIFT; pci_conf_write(pc, tag, PCI_INTERRUPT_REG, reg); } } } int acpiprt_getpcibus(struct acpiprt_softc *sc, struct aml_node *node) { /* Check if parent device has PCI mapping */ return (node->parent && node->parent->pci) ? node->parent->pci->sub : -1; } void acpiprt_route_interrupt(int bus, int dev, int pin) { struct acpiprt_softc *sc; struct acpiprt_map *p; struct acpiprt_irq irq; struct aml_node *node = NULL; struct aml_value res, res2; union acpi_resource *crs; int newirq; int64_t sta; SIMPLEQ_FOREACH(p, &acpiprt_map_list, list) { if (p->bus == bus && p->dev == dev && p->pin == (pin - 1)) { newirq = p->irq; sc = p->sc; node = p->node; break; } } if (node == NULL) return; sta = acpi_getsta(sc->sc_acpi, node); KASSERT(sta & STA_PRESENT); if (aml_evalname(sc->sc_acpi, node, "_CRS", 0, NULL, &res)) { printf("no _CRS method\n"); return; } if (res.type != AML_OBJTYPE_BUFFER || res.length < 5) { printf("invalid _CRS object\n"); aml_freevalue(&res); return; } aml_parse_resource(&res, acpiprt_getirq, &irq); /* Only re-route interrupts when necessary. */ if ((sta & STA_ENABLED) && irq._int == newirq) { aml_freevalue(&res); return; } crs = (union acpi_resource *)res.v_buffer; switch (AML_CRSTYPE(crs)) { case SR_IRQ: crs->sr_irq.irq_mask = htole16(1 << newirq); break; case LR_EXTIRQ: crs->lr_extirq.irq[0] = htole32(newirq); break; } if (aml_evalname(sc->sc_acpi, node, "_SRS", 1, &res, &res2)) { printf("no _SRS method\n"); aml_freevalue(&res); return; } aml_freevalue(&res); aml_freevalue(&res2); }