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Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
415 lines
12 KiB
C
415 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* efi_selftest_controllers
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*
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* Copyright (c) 2017 Heinrich Schuchardt <xypron.glpk@gmx.de>
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*
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* This unit test checks the following protocol services:
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* ConnectController, DisconnectController,
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* InstallProtocol, ReinstallProtocol, UninstallProtocol,
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* OpenProtocol, CloseProtcol, OpenProtocolInformation
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*/
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#include <efi_selftest.h>
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#define NUMBER_OF_CHILD_CONTROLLERS 4
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static int interface1 = 1;
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static int interface2 = 2;
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static struct efi_boot_services *boottime;
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const efi_guid_t guid_driver_binding_protocol =
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EFI_DRIVER_BINDING_PROTOCOL_GUID;
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static efi_guid_t guid_controller =
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EFI_GUID(0xe6ab1d96, 0x6bff, 0xdb42,
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0xaa, 0x05, 0xc8, 0x1f, 0x7f, 0x45, 0x26, 0x34);
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static efi_guid_t guid_child_controller =
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EFI_GUID(0x1d41f6f5, 0x2c41, 0xddfb,
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0xe2, 0x9b, 0xb8, 0x0e, 0x2e, 0xe8, 0x3a, 0x85);
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static efi_handle_t handle_controller;
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static efi_handle_t handle_child_controller[NUMBER_OF_CHILD_CONTROLLERS];
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static efi_handle_t handle_driver;
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/*
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* Count child controllers
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*
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* @handle handle on which child controllers are installed
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* @protocol protocol for which the child controllers were installed
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* @count number of child controllers
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* Return: status code
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*/
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static efi_status_t count_child_controllers(efi_handle_t handle,
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efi_guid_t *protocol,
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efi_uintn_t *count)
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{
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efi_status_t ret;
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efi_uintn_t entry_count;
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struct efi_open_protocol_info_entry *entry_buffer;
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*count = 0;
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ret = boottime->open_protocol_information(handle, protocol,
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&entry_buffer, &entry_count);
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if (ret != EFI_SUCCESS)
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return ret;
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if (!entry_count)
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return EFI_SUCCESS;
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while (entry_count) {
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if (entry_buffer[--entry_count].attributes &
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EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER)
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++*count;
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}
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ret = boottime->free_pool(entry_buffer);
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if (ret != EFI_SUCCESS)
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efi_st_error("Cannot free buffer\n");
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return ret;
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}
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/*
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* Check if the driver supports the controller.
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*
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* @this driver binding protocol
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* @controller_handle handle of the controller
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* @remaining_device_path path specifying the child controller
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* Return: status code
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*/
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static efi_status_t EFIAPI supported(
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struct efi_driver_binding_protocol *this,
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efi_handle_t controller_handle,
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struct efi_device_path *remaining_device_path)
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{
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efi_status_t ret;
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void *interface;
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ret = boottime->open_protocol(
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controller_handle, &guid_controller,
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&interface, handle_driver,
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controller_handle, EFI_OPEN_PROTOCOL_BY_DRIVER);
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switch (ret) {
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case EFI_ACCESS_DENIED:
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case EFI_ALREADY_STARTED:
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return ret;
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case EFI_SUCCESS:
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break;
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default:
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return EFI_UNSUPPORTED;
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}
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ret = boottime->close_protocol(
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controller_handle, &guid_controller,
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handle_driver, controller_handle);
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if (ret != EFI_SUCCESS)
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ret = EFI_UNSUPPORTED;
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return ret;
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}
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/*
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* Create child controllers and attach driver.
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*
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* @this driver binding protocol
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* @controller_handle handle of the controller
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* @remaining_device_path path specifying the child controller
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* Return: status code
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*/
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static efi_status_t EFIAPI start(
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struct efi_driver_binding_protocol *this,
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efi_handle_t controller_handle,
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struct efi_device_path *remaining_device_path)
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{
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size_t i;
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efi_status_t ret;
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void *interface;
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/* Attach driver to controller */
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ret = boottime->open_protocol(
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controller_handle, &guid_controller,
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&interface, handle_driver,
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controller_handle, EFI_OPEN_PROTOCOL_BY_DRIVER);
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switch (ret) {
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case EFI_ACCESS_DENIED:
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case EFI_ALREADY_STARTED:
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return ret;
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case EFI_SUCCESS:
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break;
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default:
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return EFI_UNSUPPORTED;
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}
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/* Create child controllers */
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for (i = 0; i < NUMBER_OF_CHILD_CONTROLLERS; ++i) {
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/* Creating a new handle for the child controller */
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handle_child_controller[i] = 0;
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ret = boottime->install_protocol_interface(
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&handle_child_controller[i], &guid_child_controller,
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EFI_NATIVE_INTERFACE, NULL);
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if (ret != EFI_SUCCESS) {
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efi_st_error("InstallProtocolInterface failed\n");
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return EFI_ST_FAILURE;
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}
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ret = boottime->open_protocol(
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controller_handle, &guid_controller,
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&interface, handle_child_controller[i],
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handle_child_controller[i],
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EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER);
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if (ret != EFI_SUCCESS) {
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efi_st_error("OpenProtocol failed\n");
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return EFI_ST_FAILURE;
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}
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}
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return ret;
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}
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/*
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* Remove a single child controller from the parent controller.
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*
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* @controller_handle parent controller
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* @child_handle child controller
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* Return: status code
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*/
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static efi_status_t disconnect_child(efi_handle_t controller_handle,
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efi_handle_t child_handle)
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{
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efi_status_t ret;
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ret = boottime->close_protocol(
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controller_handle, &guid_controller,
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child_handle, child_handle);
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if (ret != EFI_SUCCESS) {
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efi_st_error("Cannot close protocol\n");
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return ret;
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}
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ret = boottime->uninstall_protocol_interface(
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child_handle, &guid_child_controller, NULL);
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if (ret != EFI_SUCCESS) {
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efi_st_error("Cannot uninstall protocol interface\n");
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return ret;
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}
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return ret;
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}
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/*
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* Remove child controllers and disconnect the controller.
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*
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* @this driver binding protocol
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* @controller_handle handle of the controller
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* @number_of_children number of child controllers to remove
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* @child_handle_buffer handles of the child controllers to remove
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* Return: status code
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*/
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static efi_status_t EFIAPI stop(
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struct efi_driver_binding_protocol *this,
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efi_handle_t controller_handle,
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size_t number_of_children,
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efi_handle_t *child_handle_buffer)
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{
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efi_status_t ret;
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efi_uintn_t count;
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struct efi_open_protocol_info_entry *entry_buffer;
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/* Destroy provided child controllers */
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if (number_of_children) {
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efi_uintn_t i;
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for (i = 0; i < number_of_children; ++i) {
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ret = disconnect_child(controller_handle,
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child_handle_buffer[i]);
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if (ret != EFI_SUCCESS)
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return ret;
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}
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return EFI_SUCCESS;
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}
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/* Destroy all children */
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ret = boottime->open_protocol_information(
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controller_handle, &guid_controller,
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&entry_buffer, &count);
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if (ret != EFI_SUCCESS) {
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efi_st_error("OpenProtocolInformation failed\n");
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return ret;
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}
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while (count) {
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if (entry_buffer[--count].attributes &
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EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) {
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ret = disconnect_child(
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controller_handle,
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entry_buffer[count].agent_handle);
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if (ret != EFI_SUCCESS)
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return ret;
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}
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}
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ret = boottime->free_pool(entry_buffer);
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if (ret != EFI_SUCCESS)
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efi_st_error("Cannot free buffer\n");
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/* Detach driver from controller */
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ret = boottime->close_protocol(
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controller_handle, &guid_controller,
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handle_driver, controller_handle);
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if (ret != EFI_SUCCESS) {
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efi_st_error("Cannot close protocol\n");
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return ret;
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}
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return EFI_SUCCESS;
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}
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/* Driver binding protocol interface */
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static struct efi_driver_binding_protocol binding_interface = {
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supported,
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start,
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stop,
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0xffffffff,
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NULL,
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NULL,
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};
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/*
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* Setup unit test.
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*
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* @handle handle of the loaded image
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* @systable system table
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*/
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static int setup(const efi_handle_t img_handle,
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const struct efi_system_table *systable)
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{
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efi_status_t ret;
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boottime = systable->boottime;
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/* Create controller handle */
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ret = boottime->install_protocol_interface(
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&handle_controller, &guid_controller,
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EFI_NATIVE_INTERFACE, &interface1);
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if (ret != EFI_SUCCESS) {
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efi_st_error("InstallProtocolInterface failed\n");
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return EFI_ST_FAILURE;
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}
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/* Create driver handle */
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ret = boottime->install_protocol_interface(
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&handle_driver, &guid_driver_binding_protocol,
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EFI_NATIVE_INTERFACE, &binding_interface);
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if (ret != EFI_SUCCESS) {
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efi_st_error("InstallProtocolInterface failed\n");
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return EFI_ST_FAILURE;
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}
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return EFI_ST_SUCCESS;
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}
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/*
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* Execute unit test.
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*
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* The number of child controllers is checked after each of the following
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* actions:
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*
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* Connect a controller to a driver.
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* Disconnect and destroy a child controller.
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* Disconnect and destroy the remaining child controllers.
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*
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* Connect a controller to a driver.
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* Reinstall the driver protocol on the controller.
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* Uninstall the driver protocol from the controller.
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*/
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static int execute(void)
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{
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efi_status_t ret;
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efi_uintn_t count;
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/* Connect controller to driver */
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ret = boottime->connect_controller(handle_controller, NULL, NULL, 1);
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if (ret != EFI_SUCCESS) {
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efi_st_error("Failed to connect controller\n");
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return EFI_ST_FAILURE;
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}
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/* Check number of child controllers */
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ret = count_child_controllers(handle_controller, &guid_controller,
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&count);
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if (ret != EFI_SUCCESS || count != NUMBER_OF_CHILD_CONTROLLERS) {
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efi_st_error("Number of children %u != %u\n",
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(unsigned int)count, NUMBER_OF_CHILD_CONTROLLERS);
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}
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/* Destroy second child controller */
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ret = boottime->disconnect_controller(handle_controller,
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handle_driver,
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handle_child_controller[1]);
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if (ret != EFI_SUCCESS) {
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efi_st_error("Failed to disconnect child controller\n");
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return EFI_ST_FAILURE;
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}
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/* Check number of child controllers */
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ret = count_child_controllers(handle_controller, &guid_controller,
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&count);
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if (ret != EFI_SUCCESS || count != NUMBER_OF_CHILD_CONTROLLERS - 1) {
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efi_st_error("Destroying single child controller failed\n");
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return EFI_ST_FAILURE;
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}
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/* Destroy remaining child controllers and disconnect controller */
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ret = boottime->disconnect_controller(handle_controller, NULL, NULL);
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if (ret != EFI_SUCCESS) {
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efi_st_error("Failed to disconnect controller\n");
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return EFI_ST_FAILURE;
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}
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/* Check number of child controllers */
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ret = count_child_controllers(handle_controller, &guid_controller,
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&count);
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if (ret != EFI_SUCCESS || count) {
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efi_st_error("Destroying child controllers failed\n");
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return EFI_ST_FAILURE;
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}
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/* Connect controller to driver */
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ret = boottime->connect_controller(handle_controller, NULL, NULL, 1);
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if (ret != EFI_SUCCESS) {
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efi_st_error("Failed to connect controller\n");
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return EFI_ST_FAILURE;
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}
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/* Check number of child controllers */
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ret = count_child_controllers(handle_controller, &guid_controller,
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&count);
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if (ret != EFI_SUCCESS || count != NUMBER_OF_CHILD_CONTROLLERS) {
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efi_st_error("Number of children %u != %u\n",
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(unsigned int)count, NUMBER_OF_CHILD_CONTROLLERS);
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}
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/* Try to uninstall controller protocol using the wrong interface */
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ret = boottime->uninstall_protocol_interface(handle_controller,
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&guid_controller,
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&interface2);
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if (ret == EFI_SUCCESS) {
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efi_st_error(
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"Interface not checked when uninstalling protocol\n");
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return EFI_ST_FAILURE;
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}
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/* Reinstall controller protocol */
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ret = boottime->reinstall_protocol_interface(handle_controller,
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&guid_controller,
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&interface1,
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&interface2);
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if (ret != EFI_SUCCESS) {
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efi_st_error("Failed to reinstall protocols\n");
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return EFI_ST_FAILURE;
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}
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/* Check number of child controllers */
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ret = count_child_controllers(handle_controller, &guid_controller,
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&count);
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if (ret != EFI_SUCCESS || count != NUMBER_OF_CHILD_CONTROLLERS) {
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efi_st_error("Number of children %u != %u\n",
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(unsigned int)count, NUMBER_OF_CHILD_CONTROLLERS);
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}
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/* Uninstall controller protocol */
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ret = boottime->uninstall_protocol_interface(handle_controller,
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&guid_controller,
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&interface2);
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if (ret != EFI_SUCCESS) {
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efi_st_error("Failed to uninstall protocols\n");
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return EFI_ST_FAILURE;
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}
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/* Check number of child controllers */
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ret = count_child_controllers(handle_controller, &guid_controller,
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&count);
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if (ret == EFI_SUCCESS)
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efi_st_error("Uninstall failed\n");
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return EFI_ST_SUCCESS;
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}
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EFI_UNIT_TEST(controllers) = {
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.name = "controllers",
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.phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
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.setup = setup,
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.execute = execute,
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};
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