From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 55D7DC10F06 for ; Mon, 11 Mar 2019 20:55:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2E6052171F for ; Mon, 11 Mar 2019 20:55:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728414AbfCKUzx (ORCPT ); Mon, 11 Mar 2019 16:55:53 -0400 Received: from mga18.intel.com ([134.134.136.126]:10474 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728372AbfCKUzr (ORCPT ); Mon, 11 Mar 2019 16:55:47 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Mar 2019 13:55:43 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,468,1544515200"; d="scan'208";a="139910196" Received: from unknown (HELO localhost.lm.intel.com) ([10.232.112.69]) by FMSMGA003.fm.intel.com with ESMTP; 11 Mar 2019 13:55:43 -0700 From: Keith Busch To: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-mm@kvack.org, linux-api@vger.kernel.org Cc: Greg Kroah-Hartman , Rafael Wysocki , Dave Hansen , Dan Williams , Jonathan Cameron , Brice Goglin , Keith Busch Subject: [PATCHv8 09/10] acpi/hmat: Register memory side cache attributes Date: Mon, 11 Mar 2019 14:56:05 -0600 Message-Id: <20190311205606.11228-10-keith.busch@intel.com> X-Mailer: git-send-email 2.13.6 In-Reply-To: <20190311205606.11228-1-keith.busch@intel.com> References: <20190311205606.11228-1-keith.busch@intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Register memory side cache attributes with the memory's node if HMAT provides the side cache iniformation table. Acked-by: Rafael J. Wysocki Signed-off-by: Keith Busch --- drivers/acpi/hmat/hmat.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/acpi/hmat/hmat.c b/drivers/acpi/hmat/hmat.c index 7a3a2b50cadd..b7824a0309f7 100644 --- a/drivers/acpi/hmat/hmat.c +++ b/drivers/acpi/hmat/hmat.c @@ -314,6 +314,7 @@ static __init int hmat_parse_cache(union acpi_subtable_headers *header, const unsigned long end) { struct acpi_hmat_cache *cache = (void *)header; + struct node_cache_attrs cache_attrs; u32 attrs; if (cache->header.length < sizeof(*cache)) { @@ -327,6 +328,37 @@ static __init int hmat_parse_cache(union acpi_subtable_headers *header, cache->memory_PD, cache->cache_size, attrs, cache->number_of_SMBIOShandles); + cache_attrs.size = cache->cache_size; + cache_attrs.level = (attrs & ACPI_HMAT_CACHE_LEVEL) >> 4; + cache_attrs.line_size = (attrs & ACPI_HMAT_CACHE_LINE_SIZE) >> 16; + + switch ((attrs & ACPI_HMAT_CACHE_ASSOCIATIVITY) >> 8) { + case ACPI_HMAT_CA_DIRECT_MAPPED: + cache_attrs.indexing = NODE_CACHE_DIRECT_MAP; + break; + case ACPI_HMAT_CA_COMPLEX_CACHE_INDEXING: + cache_attrs.indexing = NODE_CACHE_INDEXED; + break; + case ACPI_HMAT_CA_NONE: + default: + cache_attrs.indexing = NODE_CACHE_OTHER; + break; + } + + switch ((attrs & ACPI_HMAT_WRITE_POLICY) >> 12) { + case ACPI_HMAT_CP_WB: + cache_attrs.write_policy = NODE_CACHE_WRITE_BACK; + break; + case ACPI_HMAT_CP_WT: + cache_attrs.write_policy = NODE_CACHE_WRITE_THROUGH; + break; + case ACPI_HMAT_CP_NONE: + default: + cache_attrs.write_policy = NODE_CACHE_WRITE_OTHER; + break; + } + + node_add_cache(pxm_to_node(cache->memory_PD), &cache_attrs); return 0; } -- 2.14.4