/* $NetBSD: acpi_machdep.c,v 1.6.6.3 2019/12/29 09:27:10 martin Exp $ */ /*- * Copyright (c) 2018 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jared McNeill . * * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ #include "pci.h" #include __KERNEL_RCSID(0, "$NetBSD: acpi_machdep.c,v 1.6.6.3 2019/12/29 09:27:10 martin Exp $"); #include #include #include #include #include #include #include #include #include #if NPCI > 0 #include #endif #include #include #include #include extern struct bus_space arm_generic_bs_tag; static int acpi_md_pmapflags(paddr_t pa) { int len; const int chosen = OF_finddevice("/chosen"); if (chosen == -1) return 0; const uint32_t *map = fdtbus_get_prop(chosen, "netbsd,uefi-memmap", &len); if (map == NULL) return 0; while (len >= 28) { const uint32_t type = be32dec(&map[0]); const uint64_t phys_start = be64dec(&map[1]); const uint64_t num_pages = be64dec(&map[3]); const uint64_t attr = be64dec(&map[5]); if (pa >= phys_start && pa < phys_start + (num_pages * EFI_PAGE_SIZE)) { switch (type) { case EFI_MD_TYPE_RECLAIM: /* ACPI table memory */ return PMAP_WRITE_BACK; case EFI_MD_TYPE_IOMEM: case EFI_MD_TYPE_IOPORT: return PMAP_DEV; default: if ((attr & EFI_MD_ATTR_WB) != 0) return PMAP_WRITE_BACK; else if ((attr & EFI_MD_ATTR_WC) != 0) return PMAP_WRITE_COMBINE; else if ((attr & EFI_MD_ATTR_WT) != 0) return 0; /* XXX */ return PMAP_DEV; } } map += 7; len -= 28; } /* Not found; assume device memory */ return PMAP_DEV; } ACPI_STATUS acpi_md_OsInitialize(void) { return AE_OK; } ACPI_PHYSICAL_ADDRESS acpi_md_OsGetRootPointer(void) { uint64_t pa; const int chosen = OF_finddevice("/chosen"); if (chosen == -1) return 0; if (of_getprop_uint64(chosen, "netbsd,acpi-root-table", &pa) != 0) return 0; return (ACPI_PHYSICAL_ADDRESS)pa; } ACPI_STATUS acpi_md_OsInstallInterruptHandler(UINT32 irq, ACPI_OSD_HANDLER handler, void *context, void **cookiep, const char *xname) { return AE_NOT_IMPLEMENTED; } void acpi_md_OsRemoveInterruptHandler(void *cookie) { intr_disestablish(cookie); } ACPI_STATUS acpi_md_OsMapMemory(ACPI_PHYSICAL_ADDRESS pa, UINT32 size, void **vap) { paddr_t spa, epa, curpa; vaddr_t va, curva; spa = trunc_page(pa); epa = round_page(pa + size); va = uvm_km_alloc(kernel_map, epa - spa, 0, UVM_KMF_VAONLY); if (va == 0) return AE_NO_MEMORY; const int pmapflags = acpi_md_pmapflags(spa); aprint_debug("%s: 0x%lx 0x%x flags = %#x\n", __func__, pa, size, pmapflags); for (curpa = spa, curva = va; curpa < epa; curpa += PAGE_SIZE, curva += PAGE_SIZE) pmap_kenter_pa(curva, curpa, VM_PROT_READ | VM_PROT_WRITE, pmapflags); pmap_update(pmap_kernel()); *vap = (void *)(va + (pa - spa)); return AE_OK; } void acpi_md_OsUnmapMemory(void *va, UINT32 size) { vaddr_t ova; vsize_t osz; ova = trunc_page((vaddr_t)va); osz = round_page((vaddr_t)va + size) - ova; pmap_kremove(ova, osz); pmap_update(pmap_kernel()); uvm_km_free(kernel_map, ova, osz, UVM_KMF_VAONLY); } ACPI_STATUS acpi_md_OsGetPhysicalAddress(void *va, ACPI_PHYSICAL_ADDRESS *pap) { paddr_t pa; if (!pmap_extract(pmap_kernel(), (vaddr_t)va, &pa)) return AE_ERROR; *pap = pa; return AE_OK; } BOOLEAN acpi_md_OsReadable(void *va, UINT32 len) { vaddr_t sva, eva; pt_entry_t *pte; sva = trunc_page((vaddr_t)va); eva = round_page((vaddr_t)va + len); if (sva < VM_MIN_KERNEL_ADDRESS) return FALSE; for (; sva < eva; sva += PAGE_SIZE) { pte = kvtopte(sva); if ((*pte & (LX_BLKPAG_AF|LX_BLKPAG_AP)) != (LX_BLKPAG_AF|LX_BLKPAG_AP_RO)) return FALSE; } return TRUE; } BOOLEAN acpi_md_OsWritable(void *va, UINT32 len) { vaddr_t sva, eva; pt_entry_t *pte; sva = trunc_page((vaddr_t)va); eva = round_page((vaddr_t)va + len); if (sva < VM_MIN_KERNEL_ADDRESS) return FALSE; for (; sva < eva; sva += PAGE_SIZE) { pte = kvtopte(sva); if ((*pte & (LX_BLKPAG_AF|LX_BLKPAG_AP)) != (LX_BLKPAG_AF|LX_BLKPAG_AP_RW)) return FALSE; } return TRUE; } void acpi_md_OsEnableInterrupt(void) { cpsie(I32_bit); } void acpi_md_OsDisableInterrupt(void) { cpsid(I32_bit); } void * acpi_md_intr_establish(uint32_t irq, int ipl, int type, int (*handler)(void *), void *arg, bool mpsafe, const char *xname) { return intr_establish_xname(irq, ipl, type | (mpsafe ? IST_MPSAFE : 0), handler, arg, xname); } void acpi_md_intr_disestablish(void *ih) { intr_disestablish(ih); } int acpi_md_sleep(int state) { printf("ERROR: ACPI sleep not implemented on this platform\n"); return -1; } uint32_t acpi_md_pdc(void) { return 0; } uint32_t acpi_md_ncpus(void) { return kcpuset_countset(kcpuset_attached); } static ACPI_STATUS acpi_md_madt_probe_cpu(ACPI_SUBTABLE_HEADER *hdrp, void *aux) { struct acpi_softc * const sc = aux; if (hdrp->Type == ACPI_MADT_TYPE_GENERIC_INTERRUPT) config_found_ia(sc->sc_dev, "acpimadtbus", hdrp, NULL); return AE_OK; } static ACPI_STATUS acpi_md_madt_probe_gic(ACPI_SUBTABLE_HEADER *hdrp, void *aux) { struct acpi_softc * const sc = aux; if (hdrp->Type == ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR) config_found_ia(sc->sc_dev, "acpimadtbus", hdrp, NULL); return AE_OK; } static ACPI_STATUS acpi_md_gtdt_probe(ACPI_GTDT_HEADER *hdrp, void *aux) { struct acpi_softc * const sc = aux; config_found_ia(sc->sc_dev, "acpigtdtbus", hdrp, NULL); return AE_OK; } #if NPCI > 0 static struct bus_space acpi_md_mcfg_bs_tag; static int acpi_md_mcfg_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flag, bus_space_handle_t *bshp) { return arm_generic_bs_tag.bs_map(t, bpa, size, flag | _ARM_BUS_SPACE_MAP_STRONGLY_ORDERED, bshp); } #endif void acpi_md_callback(struct acpi_softc *sc) { ACPI_TABLE_HEADER *hdrp; #if NPCI > 0 acpi_md_mcfg_bs_tag = arm_generic_bs_tag; acpi_md_mcfg_bs_tag.bs_map = acpi_md_mcfg_bs_map; acpimcfg_init(&acpi_md_mcfg_bs_tag, NULL); #endif if (acpi_madt_map() != AE_OK) panic("Failed to map MADT"); acpi_madt_walk(acpi_md_madt_probe_cpu, sc); acpi_madt_walk(acpi_md_madt_probe_gic, sc); acpi_madt_unmap(); if (acpi_gtdt_map() != AE_OK) panic("Failed to map GTDT"); acpi_gtdt_walk(acpi_md_gtdt_probe, sc); acpi_gtdt_unmap(); if (ACPI_SUCCESS(AcpiGetTable(ACPI_SIG_GTDT, 0, &hdrp))) config_found_ia(sc->sc_dev, "acpisdtbus", hdrp, NULL); }