zircon/system/utest/platform-bus/main.cc

// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>

#include <ddk/platform-defs.h>
#include <lib/devmgr-integration-test/fixture.h>
#include <lib/devmgr-launcher/launch.h>
#include <lib/zx/vmo.h>
#include <libzbi/zbi-cpp.h>
#include <zircon/boot/image.h>
#include <zircon/status.h>
#include <zxtest/zxtest.h>

namespace {

using devmgr_integration_test::IsolatedDevmgr;
using devmgr_integration_test::RecursiveWaitForFile;

zbi_platform_id_t kPlatformId = [](){
    zbi_platform_id_t plat_id = {};
    plat_id.vid = PDEV_VID_TEST;
    plat_id.pid = PDEV_PID_PBUS_TEST;
    strcpy(plat_id.board_name, "pbus-test");
    return plat_id;
}();

zx_status_t GetBootItem(uint32_t type, uint32_t extra, zx::vmo* out, uint32_t* length) {
    if (type != ZBI_TYPE_PLATFORM_ID) {
        return ZX_OK;
    }
    zx::vmo vmo;
    zx_status_t status = zx::vmo::create(sizeof(kPlatformId), 0, &vmo);
    if (status != ZX_OK) {
        return status;
    }
    status = vmo.write(&kPlatformId, 0, sizeof(kPlatformId));
    if (status != ZX_OK) {
        return status;
    }
    *out = std::move(vmo);
    return ZX_OK;
}

TEST(PbusTest, Enumeration) {
    devmgr_launcher::Args args;
    args.sys_device_driver = "/boot/driver/platform-bus.so";
    args.driver_search_paths.push_back("/boot/driver");
    args.get_boot_item = GetBootItem;

    IsolatedDevmgr devmgr;
    ASSERT_OK(IsolatedDevmgr::Create(std::move(args), &devmgr));

    fbl::unique_fd fd;
    ASSERT_OK(RecursiveWaitForFile(devmgr.devfs_root(), "sys/platform", &fd));

    EXPECT_OK(RecursiveWaitForFile(devmgr.devfs_root(), "sys/platform/test-board", &fd));

    EXPECT_OK(RecursiveWaitForFile(devmgr.devfs_root(), "sys/platform/11:01:1", &fd));

    EXPECT_OK(RecursiveWaitForFile(devmgr.devfs_root(), "sys/platform/11:01:1/child-1", &fd));

    EXPECT_OK(RecursiveWaitForFile(devmgr.devfs_root(), "sys/platform/11:01:1/child-1/child-2",
                                   &fd));
    EXPECT_OK(RecursiveWaitForFile(devmgr.devfs_root(),
                                   "sys/platform/11:01:1/child-1/child-2/child-4", &fd));
    EXPECT_OK(RecursiveWaitForFile(devmgr.devfs_root(), "sys/platform/11:01:1/child-1/child-3-top",
                                   &fd));
    EXPECT_OK(RecursiveWaitForFile(devmgr.devfs_root(),
                                   "sys/platform/11:01:1/child-1/child-3-top/child-3", &fd));

    EXPECT_OK(RecursiveWaitForFile(devmgr.devfs_root(),
                                   "sys/platform/11:01:5/test-gpio/gpio-3/component", &fd));
    EXPECT_OK(RecursiveWaitForFile(devmgr.devfs_root(),
                                   "sys/platform/11:01:7/test-clock/clock-1/component", &fd));
    EXPECT_OK(RecursiveWaitForFile(devmgr.devfs_root(),
                                   "sys/platform/11:01:8/test-i2c/i2c/i2c-1-5/component", &fd));
    EXPECT_OK(RecursiveWaitForFile(devmgr.devfs_root(), "sys/platform/11:01:6/component", &fd));
    EXPECT_OK(RecursiveWaitForFile(devmgr.devfs_root(), "composite-dev/composite", &fd));

    const int dirfd = devmgr.devfs_root().get();
    struct stat st;
    EXPECT_EQ(fstatat(dirfd, "sys/platform/test-board", &st, 0), 0);
    EXPECT_EQ(fstatat(dirfd, "sys/platform/11:01:1", &st, 0), 0);
    EXPECT_EQ(fstatat(dirfd, "sys/platform/11:01:1/child-1", &st, 0), 0);
    EXPECT_EQ(fstatat(dirfd, "sys/platform/11:01:1/child-1/child-2", &st, 0), 0);
    EXPECT_EQ(fstatat(dirfd, "sys/platform/11:01:1/child-1/child-3-top", &st, 0), 0);
    EXPECT_EQ(fstatat(dirfd, "sys/platform/11:01:1/child-1/child-2/child-4", &st, 0), 0);
    EXPECT_EQ(fstatat(dirfd, "sys/platform/11:01:1/child-1/child-3-top/child-3", &st, 0), 0);
    EXPECT_EQ(fstatat(dirfd, "sys/platform/11:01:5/test-gpio/gpio-3/component", &st, 0), 0);
    EXPECT_EQ(fstatat(dirfd, "sys/platform/11:01:7/test-clock/clock-1/component", &st, 0), 0);
    EXPECT_EQ(fstatat(dirfd, "sys/platform/11:01:8/test-i2c/i2c/i2c-1-5/component", &st, 0), 0);
    EXPECT_EQ(fstatat(dirfd, "composite-dev/composite", &st, 0), 0);
}

} // namespace