From patchwork Thu Oct 27 04:07:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alison Schofield X-Patchwork-Id: 13021566 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5C191FA3742 for ; Thu, 27 Oct 2022 04:08:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234101AbiJ0EIB (ORCPT ); Thu, 27 Oct 2022 00:08:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43558 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234444AbiJ0EH7 (ORCPT ); Thu, 27 Oct 2022 00:07:59 -0400 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 16F01153E39 for ; Wed, 26 Oct 2022 21:07:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1666843676; x=1698379676; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=LSCupKRwHiZXl4R0jkeEJVRxoLEL2AOmjhSxJqvK2Jc=; b=RfB9Co7HGmSMJi8G17246L5ZRzHqFUo9zcTWdPwipbMB/teZAYklM7gC 5eVlPDI902WUgQN7uT4JUU0MRzgYlFcnDtGoWqrizExYSlYbCnLDEcmTH nxKDUInr1fD26BBbI7qXYn6+cxk9NEJRu6VcIObsRFRBG4qgctQDkOAqw XS+v1s0eKDparp02XKuSoRGNDJzY4j/+SlERUAmZ90aBJ8MHwXlkpbe+w gT/uoWmzNtZepsqv8+LGFcA143EqFxakAfQU5e/dpmjlGtqv80tZ7TZ+4 h9j0t/gOYciASffNpqqIA+RJrXbZGEqq7hn3lWGwCspD4zBEoV/Po/MEu g==; X-IronPort-AV: E=McAfee;i="6500,9779,10512"; a="295533036" X-IronPort-AV: E=Sophos;i="5.95,215,1661842800"; d="scan'208";a="295533036" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Oct 2022 21:07:53 -0700 X-IronPort-AV: E=McAfee;i="6500,9779,10512"; a="961475588" X-IronPort-AV: E=Sophos;i="5.95,215,1661842800"; d="scan'208";a="961475588" Received: from aschofie-mobl2.amr.corp.intel.com (HELO localhost) ([10.209.1.141]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Oct 2022 21:07:53 -0700 From: alison.schofield@intel.com To: Dan Williams , Ira Weiny , Vishal Verma , Ben Widawsky , Dave Jiang Cc: Alison Schofield , linux-cxl@vger.kernel.org Subject: [PATCH v5 3/3] tools/testing/cxl: Add XOR Math support to cxl_test Date: Wed, 26 Oct 2022 21:07:43 -0700 Message-Id: <89cfaf7ec8e77635914f3fc0abb638fdca4f7e04.1666841669.git.alison.schofield@intel.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-cxl@vger.kernel.org From: Alison Schofield Expand the cxl_test topology to include CFMWS's that use XOR math for interleave arithmetic, as defined in the CXL Specification 3.0. With this expanded topology, cxl_test is useful for testing x1,x2,x4 ways with XOR interleave arithmetic. Define the additional XOR CFMWS entries to appear only with the module parameter interleave_arithmetic=1. The cxl_test default continues to be modulo math. modprobe cxl_test interleave_arithmetic=1 Signed-off-by: Alison Schofield --- tools/testing/cxl/test/cxl.c | 118 ++++++++++++++++++++++++++++++++++- 1 file changed, 115 insertions(+), 3 deletions(-) diff --git a/tools/testing/cxl/test/cxl.c b/tools/testing/cxl/test/cxl.c index a072b2d3e726..82f349cf84f5 100644 --- a/tools/testing/cxl/test/cxl.c +++ b/tools/testing/cxl/test/cxl.c @@ -11,6 +11,8 @@ #include #include "mock.h" +static int interleave_arithmetic; + #define NR_CXL_HOST_BRIDGES 2 #define NR_CXL_ROOT_PORTS 2 #define NR_CXL_SWITCH_PORTS 2 @@ -83,6 +85,22 @@ static struct { struct acpi_cedt_cfmws cfmws; u32 target[2]; } cfmws3; + struct { + struct acpi_cedt_cfmws cfmws; + u32 target[1]; + } cfmws4; + struct { + struct acpi_cedt_cfmws cfmws; + u32 target[2]; + } cfmws5; + struct { + struct acpi_cedt_cfmws cfmws; + u32 target[4]; + } cfmws6; + struct { + struct acpi_cedt_cxims cxims; + u64 xormap_list[2]; + } cxims0; } __packed mock_cedt = { .cedt = { .header = { @@ -167,13 +185,88 @@ static struct { }, .target = { 0, 1, }, }, + /* .cfmws4,5,6 use XOR Math (interleave_arithmetic == 1) */ + .cfmws4 = { + .cfmws = { + .header = { + .type = ACPI_CEDT_TYPE_CFMWS, + .length = sizeof(mock_cedt.cfmws4), + }, + .interleave_arithmetic = 1, + .interleave_ways = 0, + .granularity = 4, + .restrictions = ACPI_CEDT_CFMWS_RESTRICT_TYPE3 | + ACPI_CEDT_CFMWS_RESTRICT_PMEM, + .qtg_id = 0, + .window_size = SZ_256M * 4UL, + }, + .target = { 0 }, + }, + .cfmws5 = { + .cfmws = { + .header = { + .type = ACPI_CEDT_TYPE_CFMWS, + .length = sizeof(mock_cedt.cfmws5), + }, + .interleave_arithmetic = 1, + .interleave_ways = 1, + .granularity = 0, + .restrictions = ACPI_CEDT_CFMWS_RESTRICT_TYPE3 | + ACPI_CEDT_CFMWS_RESTRICT_PMEM, + .qtg_id = 1, + .window_size = SZ_256M * 8UL, + }, + .target = { 0, 1, }, + }, + .cfmws6 = { + .cfmws = { + .header = { + .type = ACPI_CEDT_TYPE_CFMWS, + .length = sizeof(mock_cedt.cfmws6), + }, + .interleave_arithmetic = 1, + .interleave_ways = 2, + .granularity = 0, + .restrictions = ACPI_CEDT_CFMWS_RESTRICT_TYPE3 | + ACPI_CEDT_CFMWS_RESTRICT_PMEM, + .qtg_id = 0, + .window_size = SZ_256M * 16UL, + }, + .target = { 0, 1, 0, 1, }, + }, + .cxims0 = { + .cxims = { + .header = { + .type = ACPI_CEDT_TYPE_CXIMS, + .length = sizeof(mock_cedt.cxims0), + }, + .hbig = 0, + .nr_xormaps = 2, + }, + .xormap_list = { 0x404100, 0x808200 }, + }, }; -struct acpi_cedt_cfmws *mock_cfmws[4] = { +struct acpi_cedt_cfmws *mock_cfmws[7] = { [0] = &mock_cedt.cfmws0.cfmws, [1] = &mock_cedt.cfmws1.cfmws, [2] = &mock_cedt.cfmws2.cfmws, [3] = &mock_cedt.cfmws3.cfmws, + /* Modulo Math above, XOR Math below */ + [4] = &mock_cedt.cfmws4.cfmws, + [5] = &mock_cedt.cfmws5.cfmws, + [6] = &mock_cedt.cfmws6.cfmws, +}; + +static int cfmws_start; +static int cfmws_end; +#define CFMWS_MOD_ARRAY_START 0 +#define CFMWS_MOD_ARRAY_END 3 +#define CFMWS_XOR_ARRAY_START 4 +#define CFMWS_XOR_ARRAY_END 6 + +struct acpi_cedt_cxims *mock_cxims[1] = { + [0] = &mock_cedt.cxims0.cxims, }; struct cxl_mock_res { @@ -245,7 +338,7 @@ static int populate_cedt(void) chbs->length = size; } - for (i = 0; i < ARRAY_SIZE(mock_cfmws); i++) { + for (i = cfmws_start; i <= cfmws_end; i++) { struct acpi_cedt_cfmws *window = mock_cfmws[i]; res = alloc_mock_res(window->window_size); @@ -288,12 +381,19 @@ static int mock_acpi_table_parse_cedt(enum acpi_cedt_type id, } if (id == ACPI_CEDT_TYPE_CFMWS) - for (i = 0; i < ARRAY_SIZE(mock_cfmws); i++) { + for (i = cfmws_start; i <= cfmws_end; i++) { h = (union acpi_subtable_headers *) mock_cfmws[i]; end = (unsigned long) h + mock_cfmws[i]->header.length; handler_arg(h, arg, end); } + if (id == ACPI_CEDT_TYPE_CXIMS) + for (i = 0; i < ARRAY_SIZE(mock_cxims); i++) { + h = (union acpi_subtable_headers *)mock_cxims[i]; + end = (unsigned long)h + mock_cxims[i]->header.length; + handler_arg(h, arg, end); + } + return 0; } @@ -644,6 +744,16 @@ static __init int cxl_test_init(void) if (rc) goto err_gen_pool_add; + if (interleave_arithmetic == 1) { + cfmws_start = CFMWS_XOR_ARRAY_START; + cfmws_end = CFMWS_XOR_ARRAY_END; + dev_dbg(NULL, "cxl_test loading xor math option\n"); + } else { + cfmws_start = CFMWS_MOD_ARRAY_START; + cfmws_end = CFMWS_MOD_ARRAY_END; + dev_dbg(NULL, "cxl_test loading modulo math option\n"); + } + rc = populate_cedt(); if (rc) goto err_populate; @@ -814,6 +924,8 @@ static __exit void cxl_test_exit(void) unregister_cxl_mock_ops(&cxl_mock_ops); } +module_param(interleave_arithmetic, int, 0000); +MODULE_PARM_DESC(interleave_arithmetic, "Modulo:0, XOR:1"); module_init(cxl_test_init); module_exit(cxl_test_exit); MODULE_LICENSE("GPL v2");