Received: by 2002:ad5:474a:0:0:0:0:0 with SMTP id i10csp106951imu; Mon, 10 Dec 2018 17:12:25 -0800 (PST) X-Google-Smtp-Source: AFSGD/WnFkqi0FNR/eJCCbhrjYRKt/0ZrBXOwcdXCbbs6mNDJf4LNhtg6zsOHf6P7xbx1lfTT77G X-Received: by 2002:a63:f515:: with SMTP id w21mr12774071pgh.220.1544490745701; Mon, 10 Dec 2018 17:12:25 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1544490745; cv=none; d=google.com; s=arc-20160816; b=HD6NMB52I0wYLAVCqAUyu+iO90YHqpNGK1rfAcXg9ggSNP1FAbjobBfyQ8uTABPT30 tKFag6CdNJMk8AKc4Byb4CvwmY7R6QfVYQsShIEqE2O1Yvit4bkRtp5cVZJMqhEslCzC nytLPQmy3oy6AlcQYw5WwvodfcKoN9kHn0kAnotILlkSE9YOTx+4Izo///lh4VINKIiG GCgPixNsV5qyG5WB5xe0ThBvaJO3WmmxJDycg1aKX/fleEGxi065W4nHiNbqLWV25JeK zHweB7BkA4gUOASv/AnQ6VBMZEDF7hjugg+FvJq3wvm/KA8jTDLnRJFH8Ow2a+r8yn6L BU1Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from; bh=Wd3TrHhkQeaq2hhftvOv0+UDBQYG0F2J0flgGUfwYpQ=; b=iLKqc4VZowcnpIMb1vmf8dMpwDeJnoLaLDLGBwnClQqJjFdiFQr7b6IeojpqvPRHHi mTXevJmuSqKZ/sI6dPgqlz88dt8Rd+H6c62ClDqvULkeRzas0uUm6iUrSLGxonihfhRA C6DNH1/0cOriFiUSnIAGAOVfK9AP+lC1FActHb2ki/oahN62cI7bxsn+E2AitsanIS3m cAvNq+ZYRS82YGGI8KpElPF+xDfNIAtL3zMbP5RIdJ7fxIVpALQ1CXUpKvkDMYH1kOfs 9ZtGnEmP7Sky5tvA+w9yUGKx0odFb527wyqX5Yzi/hxokOwia2l1WZiKaPI1NTbBX5Kb aDZw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id j135si10595634pgc.517.2018.12.10.17.12.10; Mon, 10 Dec 2018 17:12:25 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729934AbeLKBGq (ORCPT + 99 others); Mon, 10 Dec 2018 20:06:46 -0500 Received: from mga02.intel.com ([134.134.136.20]:24609 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729389AbeLKBFq (ORCPT ); Mon, 10 Dec 2018 20:05:46 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Dec 2018 17:05:45 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,340,1539673200"; d="scan'208";a="117705172" Received: from unknown (HELO localhost.lm.intel.com) ([10.232.112.69]) by orsmga001.jf.intel.com with ESMTP; 10 Dec 2018 17:05:44 -0800 From: Keith Busch To: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-mm@kvack.org Cc: Greg Kroah-Hartman , Rafael Wysocki , Dave Hansen , Dan Williams , Keith Busch Subject: [PATCHv2 02/12] acpi/hmat: Parse and report heterogeneous memory Date: Mon, 10 Dec 2018 18:03:00 -0700 Message-Id: <20181211010310.8551-3-keith.busch@intel.com> X-Mailer: git-send-email 2.13.6 In-Reply-To: <20181211010310.8551-1-keith.busch@intel.com> References: <20181211010310.8551-1-keith.busch@intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Systems may provide different memory types and export this information in the ACPI Heterogeneous Memory Attribute Table (HMAT). Parse these tables provided by the platform and report the memory access and caching attributes. Signed-off-by: Keith Busch --- drivers/acpi/Kconfig | 8 +++ drivers/acpi/Makefile | 1 + drivers/acpi/hmat.c | 192 ++++++++++++++++++++++++++++++++++++++++++++++++++ drivers/acpi/tables.c | 9 +++ include/linux/acpi.h | 1 + 5 files changed, 211 insertions(+) create mode 100644 drivers/acpi/hmat.c diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 7cea769c37df..9a05af3a18cf 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -327,6 +327,14 @@ config ACPI_NUMA depends on (X86 || IA64 || ARM64) default y if IA64_GENERIC || IA64_SGI_SN2 || ARM64 +config ACPI_HMAT + bool "ACPI Heterogeneous Memory Attribute Table Support" + depends on ACPI_NUMA + help + Parses representation of the ACPI Heterogeneous Memory Attributes + Table (HMAT) and set the memory node relationships and access + attributes. + config ACPI_CUSTOM_DSDT_FILE string "Custom DSDT Table file to include" default "" diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index edc039313cd6..b5e13499f88b 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -55,6 +55,7 @@ acpi-$(CONFIG_X86) += x86/apple.o acpi-$(CONFIG_X86) += x86/utils.o acpi-$(CONFIG_DEBUG_FS) += debugfs.o acpi-$(CONFIG_ACPI_NUMA) += numa.o +acpi-$(CONFIG_ACPI_HMAT) += hmat.o acpi-$(CONFIG_ACPI_PROCFS_POWER) += cm_sbs.o acpi-y += acpi_lpat.o acpi-$(CONFIG_ACPI_LPIT) += acpi_lpit.o diff --git a/drivers/acpi/hmat.c b/drivers/acpi/hmat.c new file mode 100644 index 000000000000..ef3881f0f370 --- /dev/null +++ b/drivers/acpi/hmat.c @@ -0,0 +1,192 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Heterogeneous Memory Attributes Table (HMAT) representation + * + * Copyright (c) 2018, Intel Corporation. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static __init const char *hmat_data_type(u8 type) +{ + switch (type) { + case ACPI_HMAT_ACCESS_LATENCY: + return "Access Latency"; + case ACPI_HMAT_READ_LATENCY: + return "Read Latency"; + case ACPI_HMAT_WRITE_LATENCY: + return "Write Latency"; + case ACPI_HMAT_ACCESS_BANDWIDTH: + return "Access Bandwidth"; + case ACPI_HMAT_READ_BANDWIDTH: + return "Read Bandwidth"; + case ACPI_HMAT_WRITE_BANDWIDTH: + return "Write Bandwidth"; + default: + return "Reserved"; + }; +} + +static __init const char *hmat_data_type_suffix(u8 type) +{ + switch (type) { + case ACPI_HMAT_ACCESS_LATENCY: + case ACPI_HMAT_READ_LATENCY: + case ACPI_HMAT_WRITE_LATENCY: + return " nsec"; + case ACPI_HMAT_ACCESS_BANDWIDTH: + case ACPI_HMAT_READ_BANDWIDTH: + case ACPI_HMAT_WRITE_BANDWIDTH: + return " MB/s"; + default: + return ""; + }; +} + +static __init int hmat_parse_locality(union acpi_subtable_headers *header, + const unsigned long end) +{ + struct acpi_hmat_locality *loc = (void *)header; + unsigned int init, targ, total_size, ipds, tpds; + u32 *inits, *targs, value; + u16 *entries; + u8 type; + + if (loc->header.length < sizeof(*loc)) { + pr_err("HMAT: Unexpected locality header length: %d\n", + loc->header.length); + return -EINVAL; + } + + type = loc->data_type; + ipds = loc->number_of_initiator_Pds; + tpds = loc->number_of_target_Pds; + total_size = sizeof(*loc) + sizeof(*entries) * ipds * tpds + + sizeof(*inits) * ipds + sizeof(*targs) * tpds; + if (loc->header.length < total_size) { + pr_err("HMAT: Unexpected locality header length:%d, minimum required:%d\n", + loc->header.length, total_size); + return -EINVAL; + } + + pr_info("HMAT: Locality: Flags:%02x Type:%s Initiator Domains:%d Target Domains:%d Base:%lld\n", + loc->flags, hmat_data_type(type), ipds, tpds, + loc->entry_base_unit); + + inits = (u32 *)(loc + 1); + targs = &inits[ipds]; + entries = (u16 *)(&targs[tpds]); + for (targ = 0; targ < tpds; targ++) { + for (init = 0; init < ipds; init++) { + value = entries[init * tpds + targ]; + value = (value * loc->entry_base_unit) / 10; + pr_info(" Initiator-Target[%d-%d]:%d%s\n", + inits[init], targs[targ], value, + hmat_data_type_suffix(type)); + } + } + return 0; +} + +static __init int hmat_parse_cache(union acpi_subtable_headers *header, + const unsigned long end) +{ + struct acpi_hmat_cache *cache = (void *)header; + u32 attrs; + + if (cache->header.length < sizeof(*cache)) { + pr_err("HMAT: Unexpected cache header length: %d\n", + cache->header.length); + return -EINVAL; + } + + attrs = cache->cache_attributes; + pr_info("HMAT: Cache: Domain:%d Size:%llu Attrs:%08x SMBIOS Handles:%d\n", + cache->memory_PD, cache->cache_size, attrs, + cache->number_of_SMBIOShandles); + + return 0; +} + +static int __init hmat_parse_address_range(union acpi_subtable_headers *header, + const unsigned long end) +{ + struct acpi_hmat_address_range *spa = (void *)header; + + if (spa->header.length != sizeof(*spa)) { + pr_err("HMAT: Unexpected address range header length: %d\n", + spa->header.length); + return -EINVAL; + } + pr_info("HMAT: Memory (%#llx length %#llx) Flags:%04x Processor Domain:%d Memory Domain:%d\n", + spa->physical_address_base, spa->physical_address_length, + spa->flags, spa->processor_PD, spa->memory_PD); + return 0; +} + +static int __init hmat_parse_subtable(union acpi_subtable_headers *header, + const unsigned long end) +{ + struct acpi_hmat_structure *hdr = (void *)header; + + if (!hdr) + return -EINVAL; + + switch (hdr->type) { + case ACPI_HMAT_TYPE_ADDRESS_RANGE: + return hmat_parse_address_range(header, end); + case ACPI_HMAT_TYPE_LOCALITY: + return hmat_parse_locality(header, end); + case ACPI_HMAT_TYPE_CACHE: + return hmat_parse_cache(header, end); + default: + return -EINVAL; + } +} + +static __init int parse_noop(struct acpi_table_header *table) +{ + return 0; +} + +static __init int hmat_init(void) +{ + struct acpi_subtable_proc subtable_proc; + struct acpi_table_header *tbl; + enum acpi_hmat_type i; + acpi_status status; + + if (srat_disabled()) + return 0; + + status = acpi_get_table(ACPI_SIG_HMAT, 0, &tbl); + if (ACPI_FAILURE(status)) + return 0; + + if (acpi_table_parse(ACPI_SIG_HMAT, parse_noop)) + goto out_put; + + memset(&subtable_proc, 0, sizeof(subtable_proc)); + subtable_proc.handler = hmat_parse_subtable; + for (i = ACPI_HMAT_TYPE_ADDRESS_RANGE; i < ACPI_HMAT_TYPE_RESERVED; i++) { + subtable_proc.id = i; + if (acpi_table_parse_entries_array(ACPI_SIG_HMAT, + sizeof(struct acpi_table_hmat), + &subtable_proc, 1, 0) < 0) + goto out_put; + } + out_put: + acpi_put_table(tbl); + return 0; +} +subsys_initcall(hmat_init); diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c index e9643b4267c7..bc1addf715dc 100644 --- a/drivers/acpi/tables.c +++ b/drivers/acpi/tables.c @@ -51,6 +51,7 @@ static int acpi_apic_instance __initdata; enum acpi_subtable_type { ACPI_SUBTABLE_COMMON, + ACPI_SUBTABLE_HMAT, }; struct acpi_subtable_entry { @@ -232,6 +233,8 @@ acpi_get_entry_type(struct acpi_subtable_entry *entry) switch (entry->type) { case ACPI_SUBTABLE_COMMON: return entry->hdr->common.type; + case ACPI_SUBTABLE_HMAT: + return entry->hdr->hmat.type; } return 0; } @@ -242,6 +245,8 @@ acpi_get_entry_length(struct acpi_subtable_entry *entry) switch (entry->type) { case ACPI_SUBTABLE_COMMON: return entry->hdr->common.length; + case ACPI_SUBTABLE_HMAT: + return entry->hdr->hmat.length; } return 0; } @@ -252,6 +257,8 @@ acpi_get_subtable_header_length(struct acpi_subtable_entry *entry) switch (entry->type) { case ACPI_SUBTABLE_COMMON: return sizeof(entry->hdr->common); + case ACPI_SUBTABLE_HMAT: + return sizeof(entry->hdr->hmat); } return 0; } @@ -259,6 +266,8 @@ acpi_get_subtable_header_length(struct acpi_subtable_entry *entry) static enum acpi_subtable_type __init acpi_get_subtable_type(char *id) { + if (strncmp(id, ACPI_SIG_HMAT, 4) == 0) + return ACPI_SUBTABLE_HMAT; return ACPI_SUBTABLE_COMMON; } diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 18805a967c70..4373f5ba0f95 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -143,6 +143,7 @@ enum acpi_address_range_id { /* Table Handlers */ union acpi_subtable_headers { struct acpi_subtable_header common; + struct acpi_hmat_structure hmat; }; typedef int (*acpi_tbl_table_handler)(struct acpi_table_header *table); -- 2.14.4