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([2804:7f0:b402:7782:3e7c:3fff:fe7a:e83b]) by smtp.gmail.com with ESMTPSA id v13-20020aa7808d000000b006cb9f436232sm6392316pff.114.2023.11.26.21.22.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 Nov 2023 21:22:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1701062525; x=1701667325; 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=/qrtP7sSfrEUApSD9rVL4Ayre6N/0rnGZosMCQPlDJ4=; b=ys4ZIn6sU9h8vUIG4Dg+b1+Xd7BQI3LIMFQkDdL78BpP6AAGqny0tCztuS4m3A8Otb zwF2lLd3gcXIEHZOfkbQMQfH+AolN8IgpyB2aMreHBl5PTc+H2giLGp2xNIpdpu5EDZP TVKXHsLTPiDk6/1wFJaFoO2lxA917y7YDw1fFYQTjH5z+2CVpn2kJ+R2tL0iPPLYVwtR EplK6SQIJoQJWcYiao+GI+RXF5p9O0C6UFTSfAK/cs1joUo/Api54uNpH7hxPN2BBDk1 xIolke+od981fngQInSznVdVKGK6ZL9cP4feq5iJfReCkV9Q/hEiFCPtag/U14wOH9A4 YzsQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701062525; x=1701667325; 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=/qrtP7sSfrEUApSD9rVL4Ayre6N/0rnGZosMCQPlDJ4=; b=w2OdXiE6tVpuTYgUIkpf5uQ96BKncdKYMzc+qlKzsJMQL+LMXoQuvFajN+0T2i1HbT jmbIwalJWShOQEQEqhFC3WLnzjnKqBgyY9ThpfowrhW5JkPgj2vbfyAUeYLfE5Yd8RI4 zAZM6xoyAn1V8f2137jGwMVstS3odil9KPgr9YVJdODvuCBmmM5pHxNidJoewboh8cXU eq4dlqQ2fgOeG/2uT8CJ7Kb7uQwYOdm5elFEcgiJcJgdR3Q2qmYfEyJY4oFl4/H9aVkk zRNW24s/6uGO0aoHTpbry1JA2t4Y9MJ1l7lyKKZptkrH5DI8H8MuJzc9x40ppmayLLw5 kJiw== X-Gm-Message-State: AOJu0YwzNBFF7ix4Se2E+1uamdaj2Zmh4x9/m0O94XUgmyyeVsSFArK7 TFh7WQdJfINGzY3zuP51ugxe8mNNLRnXeZcvu5Lic3MU X-Google-Smtp-Source: AGHT+IEG61OU1PAzpK47lBZ3EsdKXPYIO2Ty4+TEtxXX12gpkvEBAVK5PivvUQO/NpcksWKNCoywHw== X-Received: by 2002:a05:6a00:1483:b0:6cb:6c9b:8892 with SMTP id v3-20020a056a00148300b006cb6c9b8892mr12541721pfu.29.1701062525527; Sun, 26 Nov 2023 21:22:05 -0800 (PST) From: Gustavo Romero To: qemu-devel@nongnu.org, philmd@linaro.org, peter.maydell@linaro.org, alex.bennee@linaro.org, richard.henderson@linaro.org Cc: thuth@redhat.com, gustavo.romero@linaro.org Subject: [PATCH 3/4] tests/qtest: Add ivshmem-flat test Date: Mon, 27 Nov 2023 05:20:23 +0000 Message-Id: <20231127052024.435743-4-gustavo.romero@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231127052024.435743-1-gustavo.romero@linaro.org> References: <20231127052024.435743-1-gustavo.romero@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::431; envelope-from=gustavo.romero@linaro.org; helo=mail-pf1-x431.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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1701062580376000003 Content-Type: text/plain; charset="utf-8" Add qtest for the ivshmem-flat device. Based-on: <20231113230149.321304-1-gustavo.romero@linaro.org> Signed-off-by: Gustavo Romero --- tests/qtest/ivshmem-flat-test.c | 319 ++++++++++++++++++++++++++++++++ tests/qtest/meson.build | 2 + 2 files changed, 321 insertions(+) create mode 100644 tests/qtest/ivshmem-flat-test.c diff --git a/tests/qtest/ivshmem-flat-test.c b/tests/qtest/ivshmem-flat-tes= t.c new file mode 100644 index 0000000000..7a4547637c --- /dev/null +++ b/tests/qtest/ivshmem-flat-test.c @@ -0,0 +1,319 @@ +/* + * Inter-VM Shared Memory Flat Device qtests + * + * SPDX-FileCopyrightText: 2023 Linaro Ltd. + * SPDX-FileContributor: Gustavo Romero + * SPDX-License-Identifier: GPL-2.0-or-later + * + */ + +#include "ivshmem-utils.h" + +#define IVSHMEM_FLAT_MMR_ADDR 0x400FF000 +#define IVSHMEM_FLAT_SHM_ADDR 0x40100000 +#define SHM_SIZE 131072 /* 128k */ + +static ServerThread thread; + +uint32_t *shm_ptr; +char *shm_rel_path; +char *server_socket_path; + +static void cleanup(void) +{ + if (shm_ptr) { + munmap(shm_ptr, SHM_SIZE); + shm_ptr =3D NULL; + } + + if (shm_rel_path) { + shm_unlink(shm_rel_path); + shm_rel_path =3D NULL; + } + + if (server_socket_path) { + unlink(server_socket_path); + server_socket_path =3D NULL; + } +} + +static void abort_handler(void *data) +{ + test_ivshmem_server_stop(&thread); + cleanup(); +} + +/* + * Check if exactly 1 positive pulse (low->high->low) on 'irq' IRQ line ha= ppens + * in 'timeout' second(s). 'irq' must be intercepted using qtest_irq_inter= cept_* + * before this function can be used on it. It returns 0 when pulse is dete= cted, + * otherwise 1. + */ +static int test_ivshmem_flat_irq_positive_pulse(QTestState *qts, int irq, + int timeout) +{ + uint64_t num_raises =3D 0; + uint64_t num_lows =3D 0; + uint64_t end_time; + + end_time =3D g_get_monotonic_time() + timeout * G_TIME_SPAN_SECOND; + do { + if ((num_raises =3D qtest_get_irq_raised_counter(qts, 0))) { + num_lows =3D qtest_get_irq_lowered_counter(qts, 0); + /* Check for 1 raise and 1 low IRQ event. */ + if (num_raises =3D=3D num_lows && num_lows =3D=3D 1) { + return 0; + } else { + g_message("%s: Timeout expired", __func__); + return 1; + } + } + qtest_clock_step(qts, 10000); + } while (g_get_monotonic_time() < end_time); + + return 1; +} + +static inline uint32_t read_reg(QTestState *qts, enum Reg reg) +{ + uint32_t v; + + qtest_memread(qts, IVSHMEM_FLAT_MMR_ADDR + reg, &v, sizeof(v)); + + return v; +} + +static inline void write_reg(QTestState *qts, enum Reg reg, uint32_t v) +{ + qtest_memwrite(qts, IVSHMEM_FLAT_MMR_ADDR + reg, &v, sizeof(v)); +} + +/* + * Setup a test VM with ivshmem-flat device attached, IRQ properly set, and + * connected to the ivshmem-server. + */ +static QTestState *setup_vm(void) +{ + QTestState *qts; + const char *cmd_line; + + cmd_line =3D g_strdup_printf("-machine lm3s6965evb " + "-chardev socket,path=3D%s,id=3Divshm " + "-device ivshmem-flat,chardev=3Divshm," + "x-irq-qompath=3D'/machine/unattached/devic= e[1]/nvic/unnamed-gpio-in[0]'," + "x-bus-qompath=3D'/sysbus',shmem-size=3D%d", + server_socket_path, SHM_SIZE); + qts =3D qtest_init(cmd_line); + + return qts; +} + +static void test_ivshmem_flat_irq(void) +{ + QTestState *vm_state; + uint16_t own_id; + + vm_state =3D setup_vm(); + + qtest_irq_intercept_out_named(vm_state, + "/machine/peripheral-anon/device[0]", + "irq-output"); + + /* IVPOSTION has the device's own ID distributed by the ivshmem-server= . */ + own_id =3D read_reg(vm_state, IVPOSITION); + + /* Make device notify itself. */ + write_reg(vm_state, DOORBELL, (own_id << 16) | 0 /* vector 0 */); + + /* + * Check intercepted device's IRQ output line. Named IRQ line 'irq-out= put' + * was associated to qtest IRQ 0 and after self notification qtest IRQ= 0 + * must be toggled by the device. The test fails if no toggling is det= ected + * in 2 seconds. + */ + g_assert(test_ivshmem_flat_irq_positive_pulse(vm_state, 0, 2) =3D=3D 0= ); + + qtest_quit(vm_state); +} + +static void test_ivshmem_flat_shm_write(void) +{ + QTestState *vm_state; + int num_elements, i; + uint32_t *data; + + vm_state =3D setup_vm(); + + /* Prepare test data with random values. */ + data =3D g_malloc(SHM_SIZE); + num_elements =3D SHM_SIZE/sizeof(*data); + for (i =3D 0; i < num_elements; i++) { + data[i] =3D g_test_rand_int(); + } + + /* + * Write test data to VM address IVSHMEM_FLAT_SHM_ADDR, where the shar= ed + * memory region is located. + */ + qtest_memwrite(vm_state, IVSHMEM_FLAT_SHM_ADDR, data, SHM_SIZE); + + /* + * Since the shared memory fd is mmapped into this test process VMA at + * shm_ptr, every byte written by the VM in its shared memory region s= hould + * also be available in the test process via shm_ptr. Thus, data in sh= m_ptr + * is compared back against the original test data. + */ + for (i =3D 0; i < num_elements; i++) { + g_assert_cmpint(shm_ptr[i], =3D=3D, data[i]); + } + + qtest_quit(vm_state); +} + +static void test_ivshmem_flat_shm_read(void) +{ + QTestState *vm_state; + int num_elements, i; + uint32_t *data; + uint32_t v; + + vm_state =3D setup_vm(); + + /* Prepare test data with random values. */ + data =3D g_malloc(SHM_SIZE); + num_elements =3D SHM_SIZE/sizeof(*data); + for (i =3D 0; i < num_elements; i++) { + data[i] =3D g_test_rand_int(); + } + + /* + * Copy test data to the shared memory region so it can be read from t= he VM + * (IVSHMEM_FLAT_SHM_ADDR location). + */ + memcpy(shm_ptr, data, SHM_SIZE); + + /* Check data */ + for (i =3D 0; i < num_elements; i++) { + qtest_memread(vm_state, IVSHMEM_FLAT_SHM_ADDR + i * sizeof(v), &v, + sizeof(v)); + g_assert_cmpint(v, =3D=3D, data[i]); + } + + qtest_quit(vm_state); +} + +static void test_ivshmem_flat_shm_pair(void) +{ + QTestState *vm0_state, *vm1_state; + uint16_t vm0_peer_id, vm1_peer_id; + int num_elements, i; + uint32_t *data; + uint32_t v; + + vm0_state =3D setup_vm(); + vm1_state =3D setup_vm(); + + /* Get peer ID for the VM so it can be used for one notify each other.= */ + vm0_peer_id =3D read_reg(vm0_state, IVPOSITION); + vm1_peer_id =3D read_reg(vm1_state, IVPOSITION); + + /* Observe vm1 IRQ output line first. */ + qtest_irq_intercept_out_named(vm1_state, + "/machine/peripheral-anon/device[0]", + "irq-output"); + + /* Notify (interrupt) VM1 from VM0. */ + write_reg(vm0_state, DOORBELL, (vm1_peer_id << 16) | 0 /* vector 0 */); + + /* Check if VM1 IRQ output line is toggled after notification from VM0= . */ + g_assert(test_ivshmem_flat_irq_positive_pulse(vm1_state, 0, 2) =3D=3D = 0); + + /* Secondly, observe VM0 IRQ output line first. */ + qtest_irq_intercept_out_named(vm0_state, + "/machine/peripheral-anon/device[0]", + "irq-output"); + + /* ... and do the opposite: notify (interrupt) VM0 from VM1. */ + write_reg(vm1_state, DOORBELL, (vm0_peer_id << 16) | 0 /* vector 0 */); + + /* Check if VM0 IRQ output line is toggled after notification from VM0= . */ + g_assert(test_ivshmem_flat_irq_positive_pulse(vm0_state, 0, 2) =3D=3D = 0); + + /* Prepare test data with random values. */ + data =3D g_malloc(SHM_SIZE); + num_elements =3D SHM_SIZE/sizeof(*data); + for (i =3D 0; i < num_elements; i++) { + data[i] =3D g_test_rand_int(); + } + + /* Write test data on VM0. */ + qtest_memwrite(vm0_state, IVSHMEM_FLAT_SHM_ADDR, data, SHM_SIZE); + + /* Check test data on VM1. */ + for (i =3D 0; i < num_elements; i++) { + qtest_memread(vm1_state, IVSHMEM_FLAT_SHM_ADDR + i * sizeof(v), &v, + sizeof(v)); + g_assert_cmpint(v, =3D=3D, data[i]); + } + + /* Prepare new test data with random values. */ + for (i =3D 0; i < num_elements; i++) { + data[i] =3D g_test_rand_int(); + } + + /* Write test data on VM1. */ + qtest_memwrite(vm1_state, IVSHMEM_FLAT_SHM_ADDR, data, SHM_SIZE); + + /* Check test data on VM0. */ + for (i =3D 0; i < num_elements; i++) { + qtest_memread(vm0_state, IVSHMEM_FLAT_SHM_ADDR + i * sizeof(v), &v, + sizeof(v)); + g_assert_cmpint(v, =3D=3D, data[i]); + } + + qtest_quit(vm0_state); + qtest_quit(vm1_state); +} + +int main(int argc, char *argv[]) +{ + int shm_fd, r; + + g_test_init(&argc, &argv, NULL); + + /* If test fails, stop server, cleanup socket and shm files. */ + qtest_add_abrt_handler(abort_handler, NULL); + + shm_rel_path =3D mktempshm(SHM_SIZE, &shm_fd); + g_assert(shm_rel_path); + + /* + * Map shm to this test's VMA so it's possible to read/write from/to i= t. For + * VMs with the ivhsmem-flat device attached, this region will also be + * mapped in their own memory layout, at IVSHMEM_FLAT_SHM_ADDR (defaul= t). + */ + shm_ptr =3D mmap(0, SHM_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, shm_= fd, 0); + g_assert(shm_ptr !=3D MAP_FAILED); + + server_socket_path =3D mktempsocket(); + /* It never fails, so no assert(). */ + + /* + * Currently, ivshmem-flat device only supports notification via 1 vec= tor, + * i.e. vector 0. + */ + test_ivshmem_server_start(&thread, server_socket_path, shm_rel_path, 1= ); + + /* Register tests. */ + qtest_add_func("/ivshmem-flat/irq", test_ivshmem_flat_irq); + qtest_add_func("/ivshmem-flat/shm-write", test_ivshmem_flat_shm_write); + qtest_add_func("/ivshmem-flat/shm-read", test_ivshmem_flat_shm_read); + qtest_add_func("/ivshmem-flat/pair", test_ivshmem_flat_shm_pair); + + r =3D g_test_run(); + + test_ivshmem_server_stop(&thread); + cleanup(); + + return r; +} diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build index b6c4ca937c..e7475c7e23 100644 --- a/tests/qtest/meson.build +++ b/tests/qtest/meson.build @@ -195,6 +195,7 @@ qtests_aspeed =3D \ 'aspeed_smc-test', 'aspeed_gpio-test'] qtests_arm =3D \ + (config_all_devices.has_key('CONFIG_IVSHMEM_FLAT_DEVICE') ? ['ivshmem-fl= at-test'] : []) + \ (config_all_devices.has_key('CONFIG_MPS2') ? ['sse-timer-test'] : []) + \ (config_all_devices.has_key('CONFIG_CMSDK_APB_DUALTIMER') ? ['cmsdk-apb-= dualtimer-test'] : []) + \ (config_all_devices.has_key('CONFIG_CMSDK_APB_TIMER') ? ['cmsdk-apb-time= r-test'] : []) + \ @@ -306,6 +307,7 @@ qtests =3D { 'dbus-vmstate-test': files('migration-helpers.c') + dbus_vmstate1, 'erst-test': files('erst-test.c'), 'ivshmem-test': ['ivshmem-utils.c', '../../contrib/ivshmem-server/ivshme= m-server.c'], + 'ivshmem-flat-test': ['ivshmem-utils.c', '../../contrib/ivshmem-server/i= vshmem-server.c'], 'migration-test': migration_files, 'pxe-test': files('boot-sector.c'), 'qos-test': [chardev, io, qos_test_ss.apply(config_host, strict: false).= sources()], --=20 2.34.1