Date: Sat, 8 Dec 2018 19:10:58 +0000 (UTC) From: "Jayachandran C." <jchandra@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r341742 - in head/sys: conf dev/acpica x86/acpica Message-ID: <201812081910.wB8JAwN1003722@repo.freebsd.org>
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Author: jchandra Date: Sat Dec 8 19:10:58 2018 New Revision: 341742 URL: https://svnweb.freebsd.org/changeset/base/341742 Log: acpica : move SRAT/SLIT parsing to sys/dev/acpica This moves the architecture independent parts of sys/x86/acpica/srat.c to sys/dev/acpica/acpi_pxm.c, to be used later on arm64. The function declarations are moved to sys/dev/acpica/acpivar.h We also need to update sys/conf/files.{i386,amd64} to use the new file. No functional changes. Reviewed by: markj, imp Differential Revision: https://reviews.freebsd.org/D17941 Added: head/sys/dev/acpica/acpi_pxm.c (contents, props changed) Modified: head/sys/conf/files.amd64 head/sys/conf/files.i386 head/sys/dev/acpica/acpivar.h head/sys/x86/acpica/srat.c Modified: head/sys/conf/files.amd64 ============================================================================== --- head/sys/conf/files.amd64 Sat Dec 8 18:34:05 2018 (r341741) +++ head/sys/conf/files.amd64 Sat Dec 8 19:10:58 2018 (r341742) @@ -203,6 +203,7 @@ dev/acpica/acpi_pci_link.c optional acpi pci dev/acpica/acpi_pcib.c optional acpi pci dev/acpica/acpi_pcib_acpi.c optional acpi pci dev/acpica/acpi_pcib_pci.c optional acpi pci +dev/acpica/acpi_pxm.c optional acpi dev/acpica/acpi_timer.c optional acpi dev/acpi_support/acpi_wmi_if.m standard dev/agp/agp_amd64.c optional agp Modified: head/sys/conf/files.i386 ============================================================================== --- head/sys/conf/files.i386 Sat Dec 8 18:34:05 2018 (r341741) +++ head/sys/conf/files.i386 Sat Dec 8 19:10:58 2018 (r341742) @@ -332,6 +332,7 @@ dev/vmware/vmci/vmci_resource.c optional vmci dev/acpica/acpi_if.m standard dev/acpica/acpi_hpet.c optional acpi dev/acpica/acpi_timer.c optional acpi +dev/acpica/acpi_pxm.c optional acpi dev/acpi_support/acpi_wmi_if.m standard dev/wbwd/wbwd.c optional wbwd dev/isci/isci.c optional isci Added: head/sys/dev/acpica/acpi_pxm.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/dev/acpica/acpi_pxm.c Sat Dec 8 19:10:58 2018 (r341742) @@ -0,0 +1,649 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (c) 2010 Hudson River Trading LLC + * Written by: John H. Baldwin <jhb@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. + * + * 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "opt_vm.h" + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/kernel.h> +#include <sys/lock.h> +#include <sys/mutex.h> +#include <sys/smp.h> +#include <sys/vmmeter.h> +#include <vm/vm.h> +#include <vm/pmap.h> +#include <vm/vm_param.h> +#include <vm/vm_page.h> +#include <vm/vm_phys.h> + +#include <contrib/dev/acpica/include/acpi.h> +#include <contrib/dev/acpica/include/aclocal.h> +#include <contrib/dev/acpica/include/actables.h> + +#include <machine/md_var.h> + +#include <dev/acpica/acpivar.h> + +#if MAXMEMDOM > 1 +static struct cpu_info { + int enabled:1; + int has_memory:1; + int domain; +} *cpus; + +static int max_cpus; +static int last_cpu; + +struct mem_affinity mem_info[VM_PHYSSEG_MAX + 1]; +int num_mem; + +static ACPI_TABLE_SRAT *srat; +static vm_paddr_t srat_physaddr; + +static int domain_pxm[MAXMEMDOM]; +static int ndomain; +static vm_paddr_t maxphyaddr; + +static ACPI_TABLE_SLIT *slit; +static vm_paddr_t slit_physaddr; +static int vm_locality_table[MAXMEMDOM * MAXMEMDOM]; + +static void srat_walk_table(acpi_subtable_handler *handler, void *arg); + +/* + * SLIT parsing. + */ + +static void +slit_parse_table(ACPI_TABLE_SLIT *s) +{ + int i, j; + int i_domain, j_domain; + int offset = 0; + uint8_t e; + + /* + * This maps the SLIT data into the VM-domain centric view. + * There may be sparse entries in the PXM namespace, so + * remap them to a VM-domain ID and if it doesn't exist, + * skip it. + * + * It should result in a packed 2d array of VM-domain + * locality information entries. + */ + + if (bootverbose) + printf("SLIT.Localities: %d\n", (int) s->LocalityCount); + for (i = 0; i < s->LocalityCount; i++) { + i_domain = acpi_map_pxm_to_vm_domainid(i); + if (i_domain < 0) + continue; + + if (bootverbose) + printf("%d: ", i); + for (j = 0; j < s->LocalityCount; j++) { + j_domain = acpi_map_pxm_to_vm_domainid(j); + if (j_domain < 0) + continue; + e = s->Entry[i * s->LocalityCount + j]; + if (bootverbose) + printf("%d ", (int) e); + /* 255 == "no locality information" */ + if (e == 255) + vm_locality_table[offset] = -1; + else + vm_locality_table[offset] = e; + offset++; + } + if (bootverbose) + printf("\n"); + } +} + +/* + * Look for an ACPI System Locality Distance Information Table ("SLIT") + */ +static int +parse_slit(void) +{ + + if (resource_disabled("slit", 0)) { + return (-1); + } + + slit_physaddr = acpi_find_table(ACPI_SIG_SLIT); + if (slit_physaddr == 0) { + return (-1); + } + + /* + * Make a pass over the table to populate the cpus[] and + * mem_info[] tables. + */ + slit = acpi_map_table(slit_physaddr, ACPI_SIG_SLIT); + slit_parse_table(slit); + acpi_unmap_table(slit); + slit = NULL; + + return (0); +} + +/* + * SRAT parsing. + */ + +/* + * Returns true if a memory range overlaps with at least one range in + * phys_avail[]. + */ +static int +overlaps_phys_avail(vm_paddr_t start, vm_paddr_t end) +{ + int i; + + for (i = 0; phys_avail[i] != 0 && phys_avail[i + 1] != 0; i += 2) { + if (phys_avail[i + 1] <= start) + continue; + if (phys_avail[i] < end) + return (1); + break; + } + return (0); +} + +/* + * Find CPU by processor ID (APIC ID on x86). + */ +static struct cpu_info * +cpu_find(int cpuid) +{ + + if (cpuid <= last_cpu && cpus[cpuid].enabled) + return (&cpus[cpuid]); + return (NULL); +} + +/* + * Find CPU by pcpu pointer. + */ +static struct cpu_info * +cpu_get_info(struct pcpu *pc) +{ + struct cpu_info *cpup; + int id; + + id = pc->pc_apic_id; + cpup = cpu_find(id); + if (cpup == NULL) + panic("SRAT: CPU with APIC ID %u is not known", id); + return (cpup); +} + +/* + * Add proximity information for a new CPU. + */ +static struct cpu_info * +cpu_add(int cpuid, int domain) +{ + struct cpu_info *cpup; + + if (cpuid >= max_cpus) + return (NULL); + last_cpu = imax(last_cpu, cpuid); + cpup = &cpus[cpuid]; + cpup->domain = domain; + cpup->enabled = 1; + return (cpup); +} + +static void +srat_parse_entry(ACPI_SUBTABLE_HEADER *entry, void *arg) +{ + ACPI_SRAT_CPU_AFFINITY *cpu; + ACPI_SRAT_X2APIC_CPU_AFFINITY *x2apic; + ACPI_SRAT_MEM_AFFINITY *mem; + static struct cpu_info *cpup; + int domain, i, slot; + + switch (entry->Type) { + case ACPI_SRAT_TYPE_CPU_AFFINITY: + cpu = (ACPI_SRAT_CPU_AFFINITY *)entry; + domain = cpu->ProximityDomainLo | + cpu->ProximityDomainHi[0] << 8 | + cpu->ProximityDomainHi[1] << 16 | + cpu->ProximityDomainHi[2] << 24; + if (bootverbose) + printf("SRAT: Found CPU APIC ID %u domain %d: %s\n", + cpu->ApicId, domain, + (cpu->Flags & ACPI_SRAT_CPU_ENABLED) ? + "enabled" : "disabled"); + if (!(cpu->Flags & ACPI_SRAT_CPU_ENABLED)) + break; + cpup = cpu_find(cpu->ApicId); + if (cpup != NULL) { + printf("SRAT: Duplicate local APIC ID %u\n", + cpu->ApicId); + *(int *)arg = ENXIO; + break; + } + cpup = cpu_add(cpu->ApicId, domain); + if (cpup == NULL) + printf("SRAT: Ignoring local APIC ID %u (too high)\n", + cpu->ApicId); + break; + case ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY: + x2apic = (ACPI_SRAT_X2APIC_CPU_AFFINITY *)entry; + if (bootverbose) + printf("SRAT: Found CPU APIC ID %u domain %d: %s\n", + x2apic->ApicId, x2apic->ProximityDomain, + (x2apic->Flags & ACPI_SRAT_CPU_ENABLED) ? + "enabled" : "disabled"); + if (!(x2apic->Flags & ACPI_SRAT_CPU_ENABLED)) + break; + KASSERT(cpu_find(x2apic->ApicId) == NULL, + ("Duplicate local APIC ID %u", x2apic->ApicId)); + cpup = cpu_add(x2apic->ApicId, x2apic->ProximityDomain); + if (cpup == NULL) + printf("SRAT: Ignoring local APIC ID %u (too high)\n", + x2apic->ApicId); + break; + case ACPI_SRAT_TYPE_MEMORY_AFFINITY: + mem = (ACPI_SRAT_MEM_AFFINITY *)entry; + if (bootverbose) + printf( + "SRAT: Found memory domain %d addr 0x%jx len 0x%jx: %s\n", + mem->ProximityDomain, (uintmax_t)mem->BaseAddress, + (uintmax_t)mem->Length, + (mem->Flags & ACPI_SRAT_MEM_ENABLED) ? + "enabled" : "disabled"); + if (!(mem->Flags & ACPI_SRAT_MEM_ENABLED)) + break; + if (mem->BaseAddress >= maxphyaddr || + !overlaps_phys_avail(mem->BaseAddress, + mem->BaseAddress + mem->Length)) { + printf("SRAT: Ignoring memory at addr 0x%jx\n", + (uintmax_t)mem->BaseAddress); + break; + } + if (num_mem == VM_PHYSSEG_MAX) { + printf("SRAT: Too many memory regions\n"); + *(int *)arg = ENXIO; + break; + } + slot = num_mem; + for (i = 0; i < num_mem; i++) { + if (mem_info[i].end <= mem->BaseAddress) + continue; + if (mem_info[i].start < + (mem->BaseAddress + mem->Length)) { + printf("SRAT: Overlapping memory entries\n"); + *(int *)arg = ENXIO; + return; + } + slot = i; + } + for (i = num_mem; i > slot; i--) + mem_info[i] = mem_info[i - 1]; + mem_info[slot].start = mem->BaseAddress; + mem_info[slot].end = mem->BaseAddress + mem->Length; + mem_info[slot].domain = mem->ProximityDomain; + num_mem++; + break; + } +} + +/* + * Ensure each memory domain has at least one CPU and that each CPU + * has at least one memory domain. + */ +static int +check_domains(void) +{ + int found, i, j; + + for (i = 0; i < num_mem; i++) { + found = 0; + for (j = 0; j <= last_cpu; j++) + if (cpus[j].enabled && + cpus[j].domain == mem_info[i].domain) { + cpus[j].has_memory = 1; + found++; + } + if (!found) { + printf("SRAT: No CPU found for memory domain %d\n", + mem_info[i].domain); + return (ENXIO); + } + } + for (i = 0; i <= last_cpu; i++) + if (cpus[i].enabled && !cpus[i].has_memory) { + found = 0; + for (j = 0; j < num_mem && !found; j++) { + if (mem_info[j].domain == cpus[i].domain) + found = 1; + } + if (!found) { + if (bootverbose) + printf("SRAT: mem dom %d is empty\n", + cpus[i].domain); + mem_info[num_mem].start = 0; + mem_info[num_mem].end = 0; + mem_info[num_mem].domain = cpus[i].domain; + num_mem++; + } + } + return (0); +} + +/* + * Check that the SRAT memory regions cover all of the regions in + * phys_avail[]. + */ +static int +check_phys_avail(void) +{ + vm_paddr_t address; + int i, j; + + /* j is the current offset into phys_avail[]. */ + address = phys_avail[0]; + j = 0; + for (i = 0; i < num_mem; i++) { + /* + * Consume as many phys_avail[] entries as fit in this + * region. + */ + while (address >= mem_info[i].start && + address <= mem_info[i].end) { + /* + * If we cover the rest of this phys_avail[] entry, + * advance to the next entry. + */ + if (phys_avail[j + 1] <= mem_info[i].end) { + j += 2; + if (phys_avail[j] == 0 && + phys_avail[j + 1] == 0) { + return (0); + } + address = phys_avail[j]; + } else + address = mem_info[i].end + 1; + } + } + printf("SRAT: No memory region found for 0x%jx - 0x%jx\n", + (uintmax_t)phys_avail[j], (uintmax_t)phys_avail[j + 1]); + return (ENXIO); +} + +/* + * Renumber the memory domains to be compact and zero-based if not + * already. Returns an error if there are too many domains. + */ +static int +renumber_domains(void) +{ + int i, j, slot; + + /* Enumerate all the domains. */ + ndomain = 0; + for (i = 0; i < num_mem; i++) { + /* See if this domain is already known. */ + for (j = 0; j < ndomain; j++) { + if (domain_pxm[j] >= mem_info[i].domain) + break; + } + if (j < ndomain && domain_pxm[j] == mem_info[i].domain) + continue; + + if (ndomain >= MAXMEMDOM) { + ndomain = 1; + printf("SRAT: Too many memory domains\n"); + return (EFBIG); + } + + /* Insert the new domain at slot 'j'. */ + slot = j; + for (j = ndomain; j > slot; j--) + domain_pxm[j] = domain_pxm[j - 1]; + domain_pxm[slot] = mem_info[i].domain; + ndomain++; + } + + /* Renumber each domain to its index in the sorted 'domain_pxm' list. */ + for (i = 0; i < ndomain; i++) { + /* + * If the domain is already the right value, no need + * to renumber. + */ + if (domain_pxm[i] == i) + continue; + + /* Walk the cpu[] and mem_info[] arrays to renumber. */ + for (j = 0; j < num_mem; j++) + if (mem_info[j].domain == domain_pxm[i]) + mem_info[j].domain = i; + for (j = 0; j <= last_cpu; j++) + if (cpus[j].enabled && cpus[j].domain == domain_pxm[i]) + cpus[j].domain = i; + } + + return (0); +} + +/* + * Look for an ACPI System Resource Affinity Table ("SRAT"), + * allocate space for cpu information, and initialize globals. + */ +int +acpi_pxm_init(int ncpus, vm_paddr_t maxphys) +{ + unsigned int idx, size; + vm_paddr_t addr; + + if (resource_disabled("srat", 0)) + return (-1); + + max_cpus = ncpus; + last_cpu = -1; + maxphyaddr = maxphys; + srat_physaddr = acpi_find_table(ACPI_SIG_SRAT); + if (srat_physaddr == 0) + return (-1); + + /* + * Allocate data structure: + * + * Find the last physical memory region and steal some memory from + * it. This is done because at this point in the boot process + * malloc is still not usable. + */ + for (idx = 0; phys_avail[idx + 1] != 0; idx += 2); + KASSERT(idx != 0, ("phys_avail is empty!")); + idx -= 2; + + size = sizeof(*cpus) * max_cpus; + addr = trunc_page(phys_avail[idx + 1] - size); + KASSERT(addr >= phys_avail[idx], + ("Not enough memory for SRAT table items")); + phys_avail[idx + 1] = addr - 1; + + /* + * We cannot rely on PHYS_TO_DMAP because this code is also used in + * i386, so use pmap_mapbios to map the memory, this will end up using + * the default memory attribute (WB), and the DMAP when available. + */ + cpus = (struct cpu_info *)pmap_mapbios(addr, size); + bzero(cpus, size); + return (0); +} + +static int +parse_srat(void) +{ + int error; + + /* + * Make a pass over the table to populate the cpus[] and + * mem_info[] tables. + */ + srat = acpi_map_table(srat_physaddr, ACPI_SIG_SRAT); + error = 0; + srat_walk_table(srat_parse_entry, &error); + acpi_unmap_table(srat); + srat = NULL; + if (error || check_domains() != 0 || check_phys_avail() != 0 || + renumber_domains() != 0) { + srat_physaddr = 0; + return (-1); + } + + return (0); +} + +static void +init_mem_locality(void) +{ + int i; + + /* + * For now, assume -1 == "no locality information for + * this pairing. + */ + for (i = 0; i < MAXMEMDOM * MAXMEMDOM; i++) + vm_locality_table[i] = -1; +} + +/* + * Parse SRAT and SLIT to save proximity info. Don't do + * anything if SRAT is not available. + */ +void +acpi_pxm_parse_tables(void) +{ + + if (srat_physaddr == 0) + return; + if (parse_srat() < 0) + return; + init_mem_locality(); + (void)parse_slit(); +} + +/* + * Use saved data from SRAT/SLIT to update memory locality. + */ +void +acpi_pxm_set_mem_locality(void) +{ + + if (srat_physaddr == 0) + return; + vm_phys_register_domains(ndomain, mem_info, vm_locality_table); +} + +static void +srat_walk_table(acpi_subtable_handler *handler, void *arg) +{ + + acpi_walk_subtables(srat + 1, (char *)srat + srat->Header.Length, + handler, arg); +} + +/* + * Setup per-CPU domain IDs from information saved in 'cpus'. + */ +void +acpi_pxm_set_cpu_locality(void) +{ + struct cpu_info *cpu; + struct pcpu *pc; + u_int i; + + if (srat_physaddr == 0) + return; + for (i = 0; i < MAXCPU; i++) { + if (CPU_ABSENT(i)) + continue; + pc = pcpu_find(i); + KASSERT(pc != NULL, ("no pcpu data for CPU %u", i)); + cpu = cpu_get_info(pc); + pc->pc_domain = vm_ndomains > 1 ? cpu->domain : 0; + CPU_SET(i, &cpuset_domain[pc->pc_domain]); + if (bootverbose) + printf("SRAT: CPU %u has memory domain %d\n", i, + pc->pc_domain); + } +} + +/* + * Free data structures allocated during acpi_pxm_init. + */ +void +acpi_pxm_free(void) +{ + + if (srat_physaddr == 0) + return; + pmap_unmapbios((vm_offset_t)cpus, sizeof(*cpus) * max_cpus); + srat_physaddr = 0; + cpus = NULL; +} + +/* + * Map a _PXM value to a VM domain ID. + * + * Returns the domain ID, or -1 if no domain ID was found. + */ +int +acpi_map_pxm_to_vm_domainid(int pxm) +{ + int i; + + for (i = 0; i < ndomain; i++) { + if (domain_pxm[i] == pxm) + return (vm_ndomains > 1 ? i : 0); + } + + return (-1); +} + +#else /* MAXMEMDOM == 1 */ + +int +acpi_map_pxm_to_vm_domainid(int pxm) +{ + + return (-1); +} + +#endif /* MAXMEMDOM > 1 */ Modified: head/sys/dev/acpica/acpivar.h ============================================================================== --- head/sys/dev/acpica/acpivar.h Sat Dec 8 18:34:05 2018 (r341741) +++ head/sys/dev/acpica/acpivar.h Sat Dec 8 19:10:58 2018 (r341742) @@ -526,6 +526,15 @@ ACPI_HANDLE acpi_GetReference(ACPI_HANDLE scope, ACPI_ SYSCTL_DECL(_debug_acpi); /* + * Parse and use proximity information in SRAT and SLIT. + */ +int acpi_pxm_init(int ncpus, vm_paddr_t maxphys); +void acpi_pxm_parse_tables(void); +void acpi_pxm_set_mem_locality(void); +void acpi_pxm_set_cpu_locality(void); +void acpi_pxm_free(void); + +/* * Map a PXM to a VM domain. * * Returns the VM domain ID if found, or -1 if not found / invalid. Modified: head/sys/x86/acpica/srat.c ============================================================================== --- head/sys/x86/acpica/srat.c Sat Dec 8 18:34:05 2018 (r341741) +++ head/sys/x86/acpica/srat.c Sat Dec 8 19:10:58 2018 (r341742) @@ -36,553 +36,16 @@ __FBSDID("$FreeBSD$"); #include <sys/systm.h> #include <sys/bus.h> #include <sys/kernel.h> -#include <sys/lock.h> -#include <sys/mutex.h> -#include <sys/smp.h> -#include <sys/vmmeter.h> -#include <vm/vm.h> -#include <vm/pmap.h> -#include <vm/vm_param.h> -#include <vm/vm_page.h> -#include <vm/vm_phys.h> #include <contrib/dev/acpica/include/acpi.h> -#include <contrib/dev/acpica/include/aclocal.h> -#include <contrib/dev/acpica/include/actables.h> -#include <machine/intr_machdep.h> #include <machine/md_var.h> -#include <x86/apicvar.h> #include <dev/acpica/acpivar.h> -/* - * Parse and use proximity information in SRAT and SLIT. - */ -int acpi_pxm_init(int ncpus, vm_paddr_t maxphys); -void acpi_pxm_parse_tables(void); -void acpi_pxm_set_mem_locality(void); -void acpi_pxm_set_cpu_locality(void); -void acpi_pxm_free(void); - #if MAXMEMDOM > 1 -static struct cpu_info { - int enabled:1; - int has_memory:1; - int domain; -} *cpus; -static int max_cpus; -static int last_cpu; - -struct mem_affinity mem_info[VM_PHYSSEG_MAX + 1]; -int num_mem; - -static ACPI_TABLE_SRAT *srat; -static vm_paddr_t srat_physaddr; - -static int domain_pxm[MAXMEMDOM]; -static int ndomain; -static vm_paddr_t maxphyaddr; - -static ACPI_TABLE_SLIT *slit; -static vm_paddr_t slit_physaddr; -static int vm_locality_table[MAXMEMDOM * MAXMEMDOM]; - -static void srat_walk_table(acpi_subtable_handler *handler, void *arg); - -/* - * SLIT parsing. - */ - static void -slit_parse_table(ACPI_TABLE_SLIT *s) -{ - int i, j; - int i_domain, j_domain; - int offset = 0; - uint8_t e; - - /* - * This maps the SLIT data into the VM-domain centric view. - * There may be sparse entries in the PXM namespace, so - * remap them to a VM-domain ID and if it doesn't exist, - * skip it. - * - * It should result in a packed 2d array of VM-domain - * locality information entries. - */ - - if (bootverbose) - printf("SLIT.Localities: %d\n", (int) s->LocalityCount); - for (i = 0; i < s->LocalityCount; i++) { - i_domain = acpi_map_pxm_to_vm_domainid(i); - if (i_domain < 0) - continue; - - if (bootverbose) - printf("%d: ", i); - for (j = 0; j < s->LocalityCount; j++) { - j_domain = acpi_map_pxm_to_vm_domainid(j); - if (j_domain < 0) - continue; - e = s->Entry[i * s->LocalityCount + j]; - if (bootverbose) - printf("%d ", (int) e); - /* 255 == "no locality information" */ - if (e == 255) - vm_locality_table[offset] = -1; - else - vm_locality_table[offset] = e; - offset++; - } - if (bootverbose) - printf("\n"); - } -} - -/* - * Look for an ACPI System Locality Distance Information Table ("SLIT") - */ -static int -parse_slit(void) -{ - - if (resource_disabled("slit", 0)) { - return (-1); - } - - slit_physaddr = acpi_find_table(ACPI_SIG_SLIT); - if (slit_physaddr == 0) { - return (-1); - } - - /* - * Make a pass over the table to populate the cpus[] and - * mem_info[] tables. - */ - slit = acpi_map_table(slit_physaddr, ACPI_SIG_SLIT); - slit_parse_table(slit); - acpi_unmap_table(slit); - slit = NULL; - - return (0); -} - -/* - * SRAT parsing. - */ - -/* - * Returns true if a memory range overlaps with at least one range in - * phys_avail[]. - */ -static int -overlaps_phys_avail(vm_paddr_t start, vm_paddr_t end) -{ - int i; - - for (i = 0; phys_avail[i] != 0 && phys_avail[i + 1] != 0; i += 2) { - if (phys_avail[i + 1] <= start) - continue; - if (phys_avail[i] < end) - return (1); - break; - } - return (0); -} - -/* - * Find CPU by processor ID (APIC ID on x86). - */ -static struct cpu_info * -cpu_find(int cpuid) -{ - - if (cpuid <= last_cpu && cpus[cpuid].enabled) - return (&cpus[cpuid]); - return (NULL); -} - -/* - * Find CPU by pcpu pointer. - */ -static struct cpu_info * -cpu_get_info(struct pcpu *pc) -{ - struct cpu_info *cpup; - int id; - - id = pc->pc_apic_id; - cpup = cpu_find(id); - if (cpup == NULL) - panic("SRAT: CPU with APIC ID %u is not known", id); - return (cpup); -} - -/* - * Add proximity information for a new CPU. - */ -static struct cpu_info * -cpu_add(int cpuid, int domain) -{ - struct cpu_info *cpup; - - if (cpuid >= max_cpus) - return (NULL); - last_cpu = imax(last_cpu, cpuid); - cpup = &cpus[cpuid]; - cpup->domain = domain; - cpup->enabled = 1; - return (cpup); -} - -static void -srat_parse_entry(ACPI_SUBTABLE_HEADER *entry, void *arg) -{ - ACPI_SRAT_CPU_AFFINITY *cpu; - ACPI_SRAT_X2APIC_CPU_AFFINITY *x2apic; - ACPI_SRAT_MEM_AFFINITY *mem; - static struct cpu_info *cpup; - int domain, i, slot; - - switch (entry->Type) { - case ACPI_SRAT_TYPE_CPU_AFFINITY: - cpu = (ACPI_SRAT_CPU_AFFINITY *)entry; - domain = cpu->ProximityDomainLo | - cpu->ProximityDomainHi[0] << 8 | - cpu->ProximityDomainHi[1] << 16 | - cpu->ProximityDomainHi[2] << 24; - if (bootverbose) - printf("SRAT: Found CPU APIC ID %u domain %d: %s\n", - cpu->ApicId, domain, - (cpu->Flags & ACPI_SRAT_CPU_ENABLED) ? - "enabled" : "disabled"); - if (!(cpu->Flags & ACPI_SRAT_CPU_ENABLED)) - break; - cpup = cpu_find(cpu->ApicId); - if (cpup != NULL) { - printf("SRAT: Duplicate local APIC ID %u\n", - cpu->ApicId); - *(int *)arg = ENXIO; - break; - } - cpup = cpu_add(cpu->ApicId, domain); - if (cpup == NULL) - printf("SRAT: Ignoring local APIC ID %u (too high)\n", - cpu->ApicId); - break; - case ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY: - x2apic = (ACPI_SRAT_X2APIC_CPU_AFFINITY *)entry; - if (bootverbose) - printf("SRAT: Found CPU APIC ID %u domain %d: %s\n", - x2apic->ApicId, x2apic->ProximityDomain, - (x2apic->Flags & ACPI_SRAT_CPU_ENABLED) ? - "enabled" : "disabled"); - if (!(x2apic->Flags & ACPI_SRAT_CPU_ENABLED)) - break; - KASSERT(cpu_find(x2apic->ApicId) == NULL, - ("Duplicate local APIC ID %u", x2apic->ApicId)); - cpup = cpu_add(x2apic->ApicId, x2apic->ProximityDomain); - if (cpup == NULL) - printf("SRAT: Ignoring local APIC ID %u (too high)\n", - x2apic->ApicId); - break; - case ACPI_SRAT_TYPE_MEMORY_AFFINITY: - mem = (ACPI_SRAT_MEM_AFFINITY *)entry; - if (bootverbose) - printf( - "SRAT: Found memory domain %d addr 0x%jx len 0x%jx: %s\n", - mem->ProximityDomain, (uintmax_t)mem->BaseAddress, - (uintmax_t)mem->Length, - (mem->Flags & ACPI_SRAT_MEM_ENABLED) ? - "enabled" : "disabled"); - if (!(mem->Flags & ACPI_SRAT_MEM_ENABLED)) - break; - if (mem->BaseAddress >= maxphyaddr || - !overlaps_phys_avail(mem->BaseAddress, - mem->BaseAddress + mem->Length)) { - printf("SRAT: Ignoring memory at addr 0x%jx\n", - (uintmax_t)mem->BaseAddress); - break; - } - if (num_mem == VM_PHYSSEG_MAX) { - printf("SRAT: Too many memory regions\n"); - *(int *)arg = ENXIO; - break; - } - slot = num_mem; - for (i = 0; i < num_mem; i++) { - if (mem_info[i].end <= mem->BaseAddress) - continue; - if (mem_info[i].start < - (mem->BaseAddress + mem->Length)) { - printf("SRAT: Overlapping memory entries\n"); - *(int *)arg = ENXIO; - return; - } - slot = i; - } - for (i = num_mem; i > slot; i--) - mem_info[i] = mem_info[i - 1]; - mem_info[slot].start = mem->BaseAddress; - mem_info[slot].end = mem->BaseAddress + mem->Length; - mem_info[slot].domain = mem->ProximityDomain; - num_mem++; - break; - } -} - -/* - * Ensure each memory domain has at least one CPU and that each CPU - * has at least one memory domain. - */ -static int -check_domains(void) -{ *** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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