From patchwork Thu Jan 4 00:44:51 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hao Xiang X-Patchwork-Id: 13510691 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id AA99AC3DA6E for ; Thu, 4 Jan 2024 00:48:04 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rLBsC-0008Oq-A1; Wed, 03 Jan 2024 19:46:12 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rLBs5-0008Ku-0y for qemu-devel@nongnu.org; Wed, 03 Jan 2024 19:46:05 -0500 Received: from mail-qk1-x72f.google.com ([2607:f8b0:4864:20::72f]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rLBs1-0007Vm-G0 for qemu-devel@nongnu.org; Wed, 03 Jan 2024 19:46:04 -0500 Received: by mail-qk1-x72f.google.com with SMTP id af79cd13be357-7815c5b69e1so2065985a.1 for ; Wed, 03 Jan 2024 16:45:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1704329154; x=1704933954; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=IQB2lgwP2js/xSv1GqDmwtPHGzLG+hXjo8NhOEF/18w=; b=J85drvvlWAdNrC19ZEnpueJTRZRvry+sMV/hfyfXF0qVy6h4pgumw6GbxA0dIkUJ0g oCheB+nvFvR52pQdp3Hhd/K0P43ZksP6pUNwgXRCZyNB55+8cpT0xgCACm+ja/+/vW7p xiQNADYJjRuQG3MLgcwzFBotafS9qJue+bSoE/z/oesDu8zIgcKJn56To0XmO7bSzDBA 0f/SsVve3iFbYJSB37/YtL1C/wjqCCzTXTXDXzJVDFv/s74hu5b9CtLqZUHlxNEQ5gJS r0psZbPUjZyLn7FJKbgEF+tyiE6X1nQF4q1EHguA0eXOOqCO6rpPHuByCbpzYrXDR2rL XiUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1704329154; x=1704933954; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=IQB2lgwP2js/xSv1GqDmwtPHGzLG+hXjo8NhOEF/18w=; b=kg+cAiXDdu965RksDEdno8H/Qb6aplaOGz2SFqXBcE4HDYMpTF2FO22uzY39fTUWCa Fbm3MIMtd0uowwhUCsRQw0Dcx3CWSMTAnTSwyXmvocS/GhUzxL4TT1hPvVFnMxgwaW2p gC3hyqyyNP5r3dIIcUJOmdNlO1sn5AqFY+fEsitVKjEYacOI6MGNqbPgTriGxkKeXrIJ 4E1C7X905jQ4lt3sSGWhAmI7EWM/b44x+8LBphWl/x2MJZnx615d9cBjrtbkCM/9HJGA ZA0xNfLuQ6UHQBfJwxWW5sTAQ1C3hjMf0ZN5GcDW+QO0L74MbUDjfUk1zBrDpD7sZYAY +Qzw== X-Gm-Message-State: AOJu0Yz1fgzZLkuMreadLZ+ABK1GpKF6jW+00bGutrW1q17j/pSdSGyp /vKx0QXR+9UftH3De593p96bNWph0tGqtA== X-Google-Smtp-Source: AGHT+IHMyD2AYF2cyEwAEeLbWfwp3e9TViq+TLNH9nD23lk7H89ByUFaeD5aRaPJ1egaY+ret8AJjg== X-Received: by 2002:a05:620a:601c:b0:781:daa1:ff74 with SMTP id dw28-20020a05620a601c00b00781daa1ff74mr4804751qkb.116.1704329154278; Wed, 03 Jan 2024 16:45:54 -0800 (PST) Received: from n231-230-216.byted.org ([147.160.184.87]) by smtp.gmail.com with ESMTPSA id x19-20020ae9f813000000b0077d66e5b2e6sm10646087qkh.3.2024.01.03.16.45.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 Jan 2024 16:45:53 -0800 (PST) From: Hao Xiang To: farosas@suse.de, peter.maydell@linaro.org, peterx@redhat.com, marcandre.lureau@redhat.com, bryan.zhang@bytedance.com, qemu-devel@nongnu.org Cc: Hao Xiang Subject: [PATCH v3 19/20] util/dsa: Add unit test coverage for Intel DSA task submission and completion. Date: Thu, 4 Jan 2024 00:44:51 +0000 Message-Id: <20240104004452.324068-20-hao.xiang@bytedance.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20240104004452.324068-1-hao.xiang@bytedance.com> References: <20240104004452.324068-1-hao.xiang@bytedance.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::72f; envelope-from=hao.xiang@bytedance.com; helo=mail-qk1-x72f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org * Test DSA start and stop path. * Test DSA configure and cleanup path. * Test DSA task submission and completion path. Signed-off-by: Bryan Zhang Signed-off-by: Hao Xiang --- tests/unit/meson.build | 6 + tests/unit/test-dsa.c | 475 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 481 insertions(+) create mode 100644 tests/unit/test-dsa.c diff --git a/tests/unit/meson.build b/tests/unit/meson.build index a05d471090..72e22063dc 100644 --- a/tests/unit/meson.build +++ b/tests/unit/meson.build @@ -54,6 +54,12 @@ tests = { 'test-virtio-dmabuf': [meson.project_source_root() / 'hw/display/virtio-dmabuf.c'], } +if config_host_data.get('CONFIG_DSA_OPT') + tests += { + 'test-dsa': [], + } +endif + if have_system or have_tools tests += { 'test-qmp-event': [testqapi], diff --git a/tests/unit/test-dsa.c b/tests/unit/test-dsa.c new file mode 100644 index 0000000000..a3eeb4702a --- /dev/null +++ b/tests/unit/test-dsa.c @@ -0,0 +1,475 @@ +/* + * Test DSA functions. + * + * Copyright (c) 2023 Hao Xiang + * Copyright (c) 2023 Bryan Zhang + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see . + */ +#include "qemu/osdep.h" +#include "qemu/host-utils.h" + +#include "qemu/cutils.h" +#include "qemu/memalign.h" +#include "qemu/dsa.h" + +/* TODO Make these not-hardcoded. */ +static const char *path1 = "/dev/dsa/wq4.0"; +static const char *path2 = "/dev/dsa/wq4.0 /dev/dsa/wq4.1"; +static const int num_devices = 2; + +static struct batch_task task __attribute__((aligned(64))); + +/* + * TODO Communicate that DSA must be configured to support this batch size. + * TODO Alternatively, poke the DSA device to figure out batch size. + */ +static int batch_size = 128; +static int page_size = 4096; + +/* A helper for running a single task and checking for correctness. */ +static void do_single_task(void) +{ + batch_task_init(&task, batch_size); + char buf[page_size]; + char *ptr = buf; + + buffer_is_zero_dsa_batch_async(&task, + (const void **)&ptr, + 1, + page_size); + g_assert(task.results[0] == buffer_is_zero(buf, page_size)); +} + +static void test_single_zero(void) +{ + g_assert(!dsa_init(path1)); + dsa_start(); + + batch_task_init(&task, batch_size); + + char buf[page_size]; + char *ptr = buf; + + memset(buf, 0x0, page_size); + buffer_is_zero_dsa_batch_async(&task, + (const void **)&ptr, + 1, page_size); + g_assert(task.results[0]); + + dsa_cleanup(); +} + +static void test_single_zero_async(void) +{ + test_single_zero(); +} + +static void test_single_nonzero(void) +{ + g_assert(!dsa_init(path1)); + dsa_start(); + + batch_task_init(&task, batch_size); + + char buf[page_size]; + char *ptr = buf; + + memset(buf, 0x1, page_size); + buffer_is_zero_dsa_batch_async(&task, + (const void **)&ptr, + 1, page_size); + g_assert(!task.results[0]); + + dsa_cleanup(); +} + +static void test_single_nonzero_async(void) +{ + test_single_nonzero(); +} + +/* count == 0 should return quickly without calling into DSA. */ +static void test_zero_count_async(void) +{ + char buf[page_size]; + buffer_is_zero_dsa_batch_async(&task, + (const void **)&buf, + 0, + page_size); +} + +static void test_null_task_async(void) +{ + if (g_test_subprocess()) { + g_assert(!dsa_init(path1)); + + char buf[page_size * batch_size]; + char *addrs[batch_size]; + for (int i = 0; i < batch_size; i++) { + addrs[i] = buf + (page_size * i); + } + + buffer_is_zero_dsa_batch_async(NULL, (const void **)addrs, + batch_size, + page_size); + } else { + g_test_trap_subprocess(NULL, 0, 0); + g_test_trap_assert_failed(); + } +} + +static void test_oversized_batch(void) +{ + g_assert(!dsa_init(path1)); + dsa_start(); + + batch_task_init(&task, batch_size); + + int oversized_batch_size = batch_size + 1; + char buf[page_size * oversized_batch_size]; + char *addrs[batch_size]; + for (int i = 0; i < oversized_batch_size; i++) { + addrs[i] = buf + (page_size * i); + } + + int ret = buffer_is_zero_dsa_batch_async(&task, + (const void **)addrs, + oversized_batch_size, + page_size); + g_assert(ret != 0); + + dsa_cleanup(); +} + +static void test_oversized_batch_async(void) +{ + test_oversized_batch(); +} + +static void test_zero_len_async(void) +{ + if (g_test_subprocess()) { + g_assert(!dsa_init(path1)); + + batch_task_init(&task, batch_size); + + char buf[page_size]; + + buffer_is_zero_dsa_batch_async(&task, + (const void **)&buf, + 1, + 0); + } else { + g_test_trap_subprocess(NULL, 0, 0); + g_test_trap_assert_failed(); + } +} + +static void test_null_buf_async(void) +{ + if (g_test_subprocess()) { + g_assert(!dsa_init(path1)); + + batch_task_init(&task, batch_size); + + buffer_is_zero_dsa_batch_async(&task, NULL, 1, page_size); + } else { + g_test_trap_subprocess(NULL, 0, 0); + g_test_trap_assert_failed(); + } +} + +static void test_batch(void) +{ + g_assert(!dsa_init(path1)); + dsa_start(); + + batch_task_init(&task, batch_size); + + char buf[page_size * batch_size]; + char *addrs[batch_size]; + for (int i = 0; i < batch_size; i++) { + addrs[i] = buf + (page_size * i); + } + + /* + * Using whatever is on the stack is somewhat random. + * Manually set some pages to zero and some to nonzero. + */ + memset(buf + 0, 0, page_size * 10); + memset(buf + (10 * page_size), 0xff, page_size * 10); + + buffer_is_zero_dsa_batch_async(&task, + (const void **)addrs, + batch_size, + page_size); + + bool is_zero; + for (int i = 0; i < batch_size; i++) { + is_zero = buffer_is_zero((const void *)&buf[page_size * i], page_size); + g_assert(task.results[i] == is_zero); + } + dsa_cleanup(); +} + +static void test_batch_async(void) +{ + test_batch(); +} + +static void test_page_fault(void) +{ + g_assert(!dsa_init(path1)); + dsa_start(); + + char *buf[2]; + int prot = PROT_READ | PROT_WRITE; + int flags = MAP_SHARED | MAP_ANON; + buf[0] = (char *)mmap(NULL, page_size * batch_size, prot, flags, -1, 0); + assert(buf[0] != MAP_FAILED); + buf[1] = (char *)malloc(page_size * batch_size); + assert(buf[1] != NULL); + + for (int j = 0; j < 2; j++) { + batch_task_init(&task, batch_size); + + char *addrs[batch_size]; + for (int i = 0; i < batch_size; i++) { + addrs[i] = buf[j] + (page_size * i); + } + + buffer_is_zero_dsa_batch_async(&task, + (const void **)addrs, + batch_size, + page_size); + + bool is_zero; + for (int i = 0; i < batch_size; i++) { + is_zero = buffer_is_zero((const void *)&buf[j][page_size * i], + page_size); + g_assert(task.results[i] == is_zero); + } + } + + assert(!munmap(buf[0], page_size * batch_size)); + free(buf[1]); + dsa_cleanup(); +} + +static void test_various_buffer_sizes(void) +{ + g_assert(!dsa_init(path1)); + dsa_start(); + + int len = 1 << 4; + for (int count = 12; count > 0; count--, len <<= 1) { + batch_task_init(&task, batch_size); + + char buf[len * batch_size]; + char *addrs[batch_size]; + for (int i = 0; i < batch_size; i++) { + addrs[i] = buf + (len * i); + } + + buffer_is_zero_dsa_batch_async(&task, + (const void **)addrs, + batch_size, + len); + + bool is_zero; + for (int j = 0; j < batch_size; j++) { + is_zero = buffer_is_zero((const void *)&buf[len * j], len); + g_assert(task.results[j] == is_zero); + } + } + + dsa_cleanup(); +} + +static void test_various_buffer_sizes_async(void) +{ + test_various_buffer_sizes(); +} + +static void test_double_start_stop(void) +{ + g_assert(!dsa_init(path1)); + /* Double start */ + dsa_start(); + dsa_start(); + g_assert(dsa_is_running()); + do_single_task(); + + /* Double stop */ + dsa_stop(); + g_assert(!dsa_is_running()); + dsa_stop(); + g_assert(!dsa_is_running()); + + /* Restart */ + dsa_start(); + g_assert(dsa_is_running()); + do_single_task(); + dsa_cleanup(); +} + +static void test_is_running(void) +{ + g_assert(!dsa_init(path1)); + + g_assert(!dsa_is_running()); + dsa_start(); + g_assert(dsa_is_running()); + dsa_stop(); + g_assert(!dsa_is_running()); + dsa_cleanup(); +} + +static void test_multiple_engines(void) +{ + g_assert(!dsa_init(path2)); + dsa_start(); + + struct batch_task tasks[num_devices] + __attribute__((aligned(64))); + char bufs[num_devices][page_size * batch_size]; + char *addrs[num_devices][batch_size]; + + /* + * This is a somewhat implementation-specific way + * of testing that the tasks have unique engines + * assigned to them. + */ + batch_task_init(&tasks[0], batch_size); + batch_task_init(&tasks[1], batch_size); + g_assert(tasks[0].dsa_batch->device != tasks[1].dsa_batch->device); + + for (int i = 0; i < num_devices; i++) { + for (int j = 0; j < batch_size; j++) { + addrs[i][j] = bufs[i] + (page_size * j); + } + + buffer_is_zero_dsa_batch_async(&tasks[i], + (const void **)addrs[i], + batch_size, page_size); + + bool is_zero; + for (int j = 0; j < batch_size; j++) { + is_zero = buffer_is_zero((const void *)&bufs[i][page_size * j], + page_size); + g_assert(tasks[i].results[j] == is_zero); + } + } + + dsa_cleanup(); +} + +static void test_configure_dsa_twice(void) +{ + g_assert(!dsa_init(path2)); + g_assert(!dsa_init(path2)); + dsa_start(); + do_single_task(); + dsa_cleanup(); +} + +static void test_configure_dsa_bad_path(void) +{ + const char *bad_path = "/not/a/real/path"; + g_assert(dsa_init(bad_path)); +} + +static void test_cleanup_before_configure(void) +{ + dsa_cleanup(); + g_assert(!dsa_init(path2)); +} + +static void test_configure_dsa_num_devices(void) +{ + g_assert(!dsa_init(path1)); + dsa_start(); + + do_single_task(); + dsa_stop(); + dsa_cleanup(); +} + +static void test_cleanup_twice(void) +{ + g_assert(!dsa_init(path2)); + dsa_cleanup(); + dsa_cleanup(); + + g_assert(!dsa_init(path2)); + dsa_start(); + do_single_task(); + dsa_cleanup(); +} + +static int check_test_setup(void) +{ + const char *path[2] = {path1, path2}; + for (int i = 0; i < sizeof(path) / sizeof(char *); i++) { + if (dsa_init(path[i])) { + return -1; + } + dsa_cleanup(); + } + return 0; +} + +int main(int argc, char **argv) +{ + g_test_init(&argc, &argv, NULL); + + if (check_test_setup() != 0) { + /* + * This test requires extra setup. The current + * setup is not correct. Just skip this test + * for now. + */ + exit(0); + } + + if (num_devices > 1) { + g_test_add_func("/dsa/multiple_engines", test_multiple_engines); + } + + g_test_add_func("/dsa/async/batch", test_batch_async); + g_test_add_func("/dsa/async/various_buffer_sizes", + test_various_buffer_sizes_async); + g_test_add_func("/dsa/async/null_buf", test_null_buf_async); + g_test_add_func("/dsa/async/zero_len", test_zero_len_async); + g_test_add_func("/dsa/async/oversized_batch", test_oversized_batch_async); + g_test_add_func("/dsa/async/zero_count", test_zero_count_async); + g_test_add_func("/dsa/async/single_zero", test_single_zero_async); + g_test_add_func("/dsa/async/single_nonzero", test_single_nonzero_async); + g_test_add_func("/dsa/async/null_task", test_null_task_async); + g_test_add_func("/dsa/async/page_fault", test_page_fault); + + g_test_add_func("/dsa/double_start_stop", test_double_start_stop); + g_test_add_func("/dsa/is_running", test_is_running); + + g_test_add_func("/dsa/configure_dsa_twice", test_configure_dsa_twice); + g_test_add_func("/dsa/configure_dsa_bad_path", test_configure_dsa_bad_path); + g_test_add_func("/dsa/cleanup_before_configure", + test_cleanup_before_configure); + g_test_add_func("/dsa/configure_dsa_num_devices", + test_configure_dsa_num_devices); + g_test_add_func("/dsa/cleanup_twice", test_cleanup_twice); + + return g_test_run(); +}