From patchwork Thu Nov 7 07:45:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Tao Xu X-Patchwork-Id: 11231987 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F11E114E5 for ; Thu, 7 Nov 2019 07:53:02 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CED9C2178F for ; Thu, 7 Nov 2019 07:53:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CED9C2178F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:39596 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iScbF-0000Oj-Ds for patchwork-qemu-devel@patchwork.kernel.org; Thu, 07 Nov 2019 02:53:01 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:45556) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iScUN-0001hA-5V for qemu-devel@nongnu.org; Thu, 07 Nov 2019 02:45:59 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iScUI-0006ac-3a for qemu-devel@nongnu.org; Thu, 07 Nov 2019 02:45:53 -0500 Received: from mga02.intel.com ([134.134.136.20]:5111) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iScUH-0006BP-NK for qemu-devel@nongnu.org; Thu, 07 Nov 2019 02:45:50 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 Nov 2019 23:45:48 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,277,1569308400"; d="scan'208";a="404016931" Received: from tao-optiplex-7060.sh.intel.com ([10.239.159.36]) by fmsmga006.fm.intel.com with ESMTP; 06 Nov 2019 23:45:45 -0800 From: Tao Xu To: mst@redhat.com, imammedo@redhat.com, eblake@redhat.com, ehabkost@redhat.com, marcel.apfelbaum@gmail.com, armbru@redhat.com, mdroth@linux.vnet.ibm.com, thuth@redhat.com, lvivier@redhat.com Subject: [PATCH v15 11/12] hmat acpi: Build Memory Side Cache Information Structure(s) Date: Thu, 7 Nov 2019 15:45:10 +0800 Message-Id: <20191107074511.14304-12-tao3.xu@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191107074511.14304-1-tao3.xu@intel.com> References: <20191107074511.14304-1-tao3.xu@intel.com> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 134.134.136.20 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jingqi.liu@intel.com, tao3.xu@intel.com, fan.du@intel.com, qemu-devel@nongnu.org, Daniel Black , Jonathan Cameron Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Liu Jingqi This structure describes memory side cache information for memory proximity domains if the memory side cache is present and the physical device forms the memory side cache. The software could use this information to effectively place the data in memory to maximize the performance of the system memory that use the memory side cache. Reviewed-by: Daniel Black Reviewed-by: Jonathan Cameron Signed-off-by: Liu Jingqi Signed-off-by: Tao Xu --- No changes in v15. Changes in v13: - rename level as cache_level --- hw/acpi/hmat.c | 72 +++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 71 insertions(+), 1 deletion(-) diff --git a/hw/acpi/hmat.c b/hw/acpi/hmat.c index 6ec1310e62..931aa60678 100644 --- a/hw/acpi/hmat.c +++ b/hw/acpi/hmat.c @@ -135,14 +135,63 @@ static void build_hmat_lb(GArray *table_data, HMAT_LB_Info *hmat_lb, } } +/* ACPI 6.3: 5.2.27.5 Memory Side Cache Information Structure: Table 5-147 */ +static void build_hmat_cache(GArray *table_data, HMAT_Cache_Info *hmat_cache) +{ + /* + * Cache Attributes: Bits [3:0] – Total Cache Levels + * for this Memory Proximity Domain + */ + uint32_t cache_attr = hmat_cache->total_levels & 0xF; + + /* Bits [7:4] : Cache Level described in this structure */ + cache_attr |= (hmat_cache->level & 0xF) << 4; + + /* Bits [11:8] - Cache Associativity */ + cache_attr |= (hmat_cache->associativity & 0x7) << 8; + + /* Bits [15:12] - Write Policy */ + cache_attr |= (hmat_cache->write_policy & 0x7) << 12; + + /* Bits [31:16] - Cache Line size in bytes */ + cache_attr |= (hmat_cache->line_size & 0xFFFF) << 16; + + cache_attr = cpu_to_le32(cache_attr); + + /* Type */ + build_append_int_noprefix(table_data, 2, 2); + /* Reserved */ + build_append_int_noprefix(table_data, 0, 2); + /* Length */ + build_append_int_noprefix(table_data, 32, 4); + /* Proximity Domain for the Memory */ + build_append_int_noprefix(table_data, hmat_cache->proximity, 4); + /* Reserved */ + build_append_int_noprefix(table_data, 0, 4); + /* Memory Side Cache Size */ + build_append_int_noprefix(table_data, hmat_cache->size, 8); + /* Cache Attributes */ + build_append_int_noprefix(table_data, cache_attr, 4); + /* Reserved */ + build_append_int_noprefix(table_data, 0, 2); + /* + * Number of SMBIOS handles (n) + * Linux kernel uses Memory Side Cache Information Structure + * without SMBIOS entries for now, so set Number of SMBIOS handles + * as 0. + */ + build_append_int_noprefix(table_data, 0, 2); +} + /* Build HMAT sub table structures */ static void hmat_build_table_structs(GArray *table_data, NumaState *numa_state) { uint16_t flags; uint32_t num_initiator = 0; uint32_t initiator_list[MAX_NODES]; - int i, hierarchy, type; + int i, hierarchy, type, cache_level, total_levels; HMAT_LB_Info *hmat_lb; + HMAT_Cache_Info *hmat_cache; for (i = 0; i < numa_state->num_nodes; i++) { flags = 0; @@ -176,6 +225,27 @@ static void hmat_build_table_structs(GArray *table_data, NumaState *numa_state) } } } + + /* + * ACPI 6.3: 5.2.27.5 Memory Side Cache Information Structure: + * Table 5-147 + */ + for (i = 0; i < numa_state->num_nodes; i++) { + total_levels = 0; + for (cache_level = 1; cache_level <= MAX_HMAT_CACHE_LEVEL; + cache_level++) { + if (numa_state->hmat_cache[i][cache_level]) { + total_levels++; + } + } + for (cache_level = 0; cache_level <= total_levels; cache_level++) { + hmat_cache = numa_state->hmat_cache[i][cache_level]; + if (hmat_cache) { + hmat_cache->total_levels = total_levels; + build_hmat_cache(table_data, hmat_cache); + } + } + } } void build_hmat(GArray *table_data, BIOSLinker *linker, NumaState *numa_state)