Index: head/sys/dev/pci/pci_host_generic_acpi.c =================================================================== --- head/sys/dev/pci/pci_host_generic_acpi.c (revision 368155) +++ head/sys/dev/pci/pci_host_generic_acpi.c (revision 368156) @@ -1,461 +1,462 @@ /*- * Copyright (C) 2018 Cavium Inc. * Copyright (c) 2015 Ruslan Bukin * Copyright (c) 2014 The FreeBSD Foundation * All rights reserved. * * This software was developed by Semihalf under * the sponsorship of the FreeBSD Foundation. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. */ /* Generic ECAM PCIe driver */ #include __FBSDID("$FreeBSD$"); #include "opt_platform.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pcib_if.h" #include "acpi_bus_if.h" /* Assembling ECAM Configuration Address */ #define PCIE_BUS_SHIFT 20 #define PCIE_SLOT_SHIFT 15 #define PCIE_FUNC_SHIFT 12 #define PCIE_BUS_MASK 0xFF #define PCIE_SLOT_MASK 0x1F #define PCIE_FUNC_MASK 0x07 #define PCIE_REG_MASK 0xFFF #define PCIE_ADDR_OFFSET(bus, slot, func, reg) \ ((((bus) & PCIE_BUS_MASK) << PCIE_BUS_SHIFT) | \ (((slot) & PCIE_SLOT_MASK) << PCIE_SLOT_SHIFT) | \ (((func) & PCIE_FUNC_MASK) << PCIE_FUNC_SHIFT) | \ ((reg) & PCIE_REG_MASK)) #define PCI_IO_WINDOW_OFFSET 0x1000 #define SPACE_CODE_SHIFT 24 #define SPACE_CODE_MASK 0x3 #define SPACE_CODE_IO_SPACE 0x1 #define PROPS_CELL_SIZE 1 #define PCI_ADDR_CELL_SIZE 2 /* Forward prototypes */ static int generic_pcie_acpi_probe(device_t dev); static ACPI_STATUS pci_host_generic_acpi_parse_resource(ACPI_RESOURCE *, void *); static int generic_pcie_acpi_read_ivar(device_t, device_t, int, uintptr_t *); /* * generic_pcie_acpi_probe - look for root bridge flag */ static int generic_pcie_acpi_probe(device_t dev) { ACPI_DEVICE_INFO *devinfo; ACPI_HANDLE h; int root; if (acpi_disabled("pcib") || (h = acpi_get_handle(dev)) == NULL || ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo))) return (ENXIO); root = (devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0; AcpiOsFree(devinfo); if (!root) return (ENXIO); device_set_desc(dev, "Generic PCI host controller"); return (BUS_PROBE_GENERIC); } /* * pci_host_generic_acpi_parse_resource - parse PCI memory, IO and bus spaces * 'produced' by this bridge */ static ACPI_STATUS pci_host_generic_acpi_parse_resource(ACPI_RESOURCE *res, void *arg) { device_t dev = (device_t)arg; struct generic_pcie_acpi_softc *sc; struct rman *rm; rman_res_t min, max, off; int r; rm = NULL; sc = device_get_softc(dev); r = sc->base.nranges; switch (res->Type) { case ACPI_RESOURCE_TYPE_ADDRESS16: min = res->Data.Address16.Address.Minimum; max = res->Data.Address16.Address.Maximum; break; case ACPI_RESOURCE_TYPE_ADDRESS32: min = res->Data.Address32.Address.Minimum; max = res->Data.Address32.Address.Maximum; off = res->Data.Address32.Address.TranslationOffset; break; case ACPI_RESOURCE_TYPE_ADDRESS64: min = res->Data.Address64.Address.Minimum; max = res->Data.Address64.Address.Maximum; off = res->Data.Address64.Address.TranslationOffset; break; default: return (AE_OK); } /* Save detected ranges */ if (res->Data.Address.ResourceType == ACPI_MEMORY_RANGE || res->Data.Address.ResourceType == ACPI_IO_RANGE) { sc->base.ranges[r].pci_base = min; sc->base.ranges[r].phys_base = min + off; sc->base.ranges[r].size = max - min + 1; if (res->Data.Address.ResourceType == ACPI_MEMORY_RANGE) sc->base.ranges[r].flags |= FLAG_TYPE_MEM; else if (res->Data.Address.ResourceType == ACPI_IO_RANGE) sc->base.ranges[r].flags |= FLAG_TYPE_IO; sc->base.nranges++; } else if (res->Data.Address.ResourceType == ACPI_BUS_NUMBER_RANGE) { sc->base.bus_start = min; sc->base.bus_end = max; } return (AE_OK); } static int pci_host_acpi_get_ecam_resource(device_t dev) { struct generic_pcie_acpi_softc *sc; struct acpi_device *ad; struct resource_list *rl; ACPI_TABLE_HEADER *hdr; ACPI_MCFG_ALLOCATION *mcfg_entry, *mcfg_end; ACPI_HANDLE handle; ACPI_STATUS status; rman_res_t base, start, end; int found, val; sc = device_get_softc(dev); handle = acpi_get_handle(dev); /* Try MCFG first */ status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr); if (ACPI_SUCCESS(status)) { found = FALSE; mcfg_end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length); mcfg_entry = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1); while (mcfg_entry < mcfg_end && !found) { if (mcfg_entry->PciSegment == sc->base.ecam && mcfg_entry->StartBusNumber <= sc->base.bus_start && mcfg_entry->EndBusNumber >= sc->base.bus_start) found = TRUE; else mcfg_entry++; } if (found) { - sc->base.bus_end = mcfg_entry->EndBusNumber; + if (mcfg_entry->EndBusNumber < sc->base.bus_end) + sc->base.bus_end = mcfg_entry->EndBusNumber; base = mcfg_entry->Address; } else { device_printf(dev, "MCFG exists, but does not have bus %d-%d\n", sc->base.bus_start, sc->base.bus_end); return (ENXIO); } } else { status = acpi_GetInteger(handle, "_CBA", &val); - if (ACPI_SUCCESS(status)) { + if (ACPI_SUCCESS(status)) base = val; - sc->base.bus_end = 255; - } else + else return (ENXIO); } /* add as MEM rid 0 */ ad = device_get_ivars(dev); rl = &ad->ad_rl; start = base + (sc->base.bus_start << PCIE_BUS_SHIFT); end = base + ((sc->base.bus_end + 1) << PCIE_BUS_SHIFT) - 1; resource_list_add(rl, SYS_RES_MEMORY, 0, start, end, end - start + 1); if (bootverbose) device_printf(dev, "ECAM for bus %d-%d at mem %jx-%jx\n", sc->base.bus_start, sc->base.bus_end, start, end); return (0); } int pci_host_generic_acpi_init(device_t dev) { struct generic_pcie_acpi_softc *sc; ACPI_HANDLE handle; ACPI_STATUS status; int error; sc = device_get_softc(dev); handle = acpi_get_handle(dev); /* Get Start bus number for the PCI host bus is from _BBN method */ status = acpi_GetInteger(handle, "_BBN", &sc->base.bus_start); if (ACPI_FAILURE(status)) { device_printf(dev, "No _BBN, using start bus 0\n"); sc->base.bus_start = 0; } + sc->base.bus_end = 255; /* Get PCI Segment (domain) needed for MCFG lookup */ status = acpi_GetInteger(handle, "_SEG", &sc->base.ecam); if (ACPI_FAILURE(status)) { device_printf(dev, "No _SEG for PCI Bus, using segment 0\n"); sc->base.ecam = 0; } /* Bus decode ranges */ status = AcpiWalkResources(handle, "_CRS", pci_host_generic_acpi_parse_resource, (void *)dev); if (ACPI_FAILURE(status)) return (ENXIO); /* Coherency attribute */ if (ACPI_FAILURE(acpi_GetInteger(handle, "_CCA", &sc->base.coherent))) sc->base.coherent = 0; if (bootverbose) device_printf(dev, "Bus is%s cache-coherent\n", sc->base.coherent ? "" : " not"); /* add config space resource */ pci_host_acpi_get_ecam_resource(dev); acpi_pcib_fetch_prt(dev, &sc->ap_prt); error = pci_host_generic_core_attach(dev); if (error != 0) return (error); return (0); } static int pci_host_generic_acpi_attach(device_t dev) { int error; error = pci_host_generic_acpi_init(dev); if (error != 0) return (error); device_add_child(dev, "pci", -1); return (bus_generic_attach(dev)); } static int generic_pcie_acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) { struct generic_pcie_acpi_softc *sc; sc = device_get_softc(dev); if (index == PCIB_IVAR_BUS) { *result = sc->base.bus_start; return (0); } if (index == PCIB_IVAR_DOMAIN) { *result = sc->base.ecam; return (0); } if (bootverbose) device_printf(dev, "ERROR: Unknown index %d.\n", index); return (ENOENT); } static int generic_pcie_acpi_route_interrupt(device_t bus, device_t dev, int pin) { struct generic_pcie_acpi_softc *sc; sc = device_get_softc(bus); return (acpi_pcib_route_interrupt(bus, dev, pin, &sc->ap_prt)); } static u_int generic_pcie_get_xref(device_t pci, device_t child) { struct generic_pcie_acpi_softc *sc; uintptr_t rid; u_int xref, devid; int err; sc = device_get_softc(pci); err = pcib_get_id(pci, child, PCI_ID_RID, &rid); if (err != 0) return (ACPI_MSI_XREF); err = acpi_iort_map_pci_msi(sc->base.ecam, rid, &xref, &devid); if (err != 0) return (ACPI_MSI_XREF); return (xref); } static u_int generic_pcie_map_id(device_t pci, device_t child, uintptr_t *id) { struct generic_pcie_acpi_softc *sc; uintptr_t rid; u_int xref, devid; int err; sc = device_get_softc(pci); err = pcib_get_id(pci, child, PCI_ID_RID, &rid); if (err != 0) return (err); err = acpi_iort_map_pci_msi(sc->base.ecam, rid, &xref, &devid); if (err == 0) *id = devid; else *id = rid; /* RID not in IORT, likely FW bug, ignore */ return (0); } static int generic_pcie_acpi_alloc_msi(device_t pci, device_t child, int count, int maxcount, int *irqs) { #if defined(INTRNG) return (intr_alloc_msi(pci, child, generic_pcie_get_xref(pci, child), count, maxcount, irqs)); #else return (ENXIO); #endif } static int generic_pcie_acpi_release_msi(device_t pci, device_t child, int count, int *irqs) { #if defined(INTRNG) return (intr_release_msi(pci, child, generic_pcie_get_xref(pci, child), count, irqs)); #else return (ENXIO); #endif } static int generic_pcie_acpi_map_msi(device_t pci, device_t child, int irq, uint64_t *addr, uint32_t *data) { #if defined(INTRNG) return (intr_map_msi(pci, child, generic_pcie_get_xref(pci, child), irq, addr, data)); #else return (ENXIO); #endif } static int generic_pcie_acpi_alloc_msix(device_t pci, device_t child, int *irq) { #if defined(INTRNG) return (intr_alloc_msix(pci, child, generic_pcie_get_xref(pci, child), irq)); #else return (ENXIO); #endif } static int generic_pcie_acpi_release_msix(device_t pci, device_t child, int irq) { #if defined(INTRNG) return (intr_release_msix(pci, child, generic_pcie_get_xref(pci, child), irq)); #else return (ENXIO); #endif } static int generic_pcie_acpi_get_id(device_t pci, device_t child, enum pci_id_type type, uintptr_t *id) { if (type == PCI_ID_MSI) return (generic_pcie_map_id(pci, child, id)); else return (pcib_get_id(pci, child, type, id)); } static device_method_t generic_pcie_acpi_methods[] = { DEVMETHOD(device_probe, generic_pcie_acpi_probe), DEVMETHOD(device_attach, pci_host_generic_acpi_attach), DEVMETHOD(bus_read_ivar, generic_pcie_acpi_read_ivar), /* pcib interface */ DEVMETHOD(pcib_route_interrupt, generic_pcie_acpi_route_interrupt), DEVMETHOD(pcib_alloc_msi, generic_pcie_acpi_alloc_msi), DEVMETHOD(pcib_release_msi, generic_pcie_acpi_release_msi), DEVMETHOD(pcib_alloc_msix, generic_pcie_acpi_alloc_msix), DEVMETHOD(pcib_release_msix, generic_pcie_acpi_release_msix), DEVMETHOD(pcib_map_msi, generic_pcie_acpi_map_msi), DEVMETHOD(pcib_get_id, generic_pcie_acpi_get_id), DEVMETHOD_END }; DEFINE_CLASS_1(pcib, generic_pcie_acpi_driver, generic_pcie_acpi_methods, sizeof(struct generic_pcie_acpi_softc), generic_pcie_core_driver); static devclass_t generic_pcie_acpi_devclass; DRIVER_MODULE(pcib, acpi, generic_pcie_acpi_driver, generic_pcie_acpi_devclass, 0, 0);