diff options
Diffstat (limited to 'drivers/io/io_dummy.c')
| -rw-r--r-- | drivers/io/io_dummy.c | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/drivers/io/io_dummy.c b/drivers/io/io_dummy.c deleted file mode 100644 index 4f0cda6da..000000000 --- a/drivers/io/io_dummy.c +++ /dev/null @@ -1,155 +0,0 @@ -/* - * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. - * - * SPDX-License-Identifier: BSD-3-Clause - */ - -#include <assert.h> -#include <string.h> - -#include <common/debug.h> -#include <drivers/io/io_driver.h> -#include <drivers/io/io_dummy.h> -#include <drivers/io/io_storage.h> - -struct file_state { - int in_use; - size_t size; -}; - -static struct file_state current_file = {0}; - -/* Identify the device type as dummy */ -static io_type_t device_type_dummy(void) -{ - return IO_TYPE_DUMMY; -} - -/* Dummy device functions */ -static int dummy_dev_open(const uintptr_t dev_spec, io_dev_info_t **dev_info); -static int dummy_block_open(io_dev_info_t *dev_info, const uintptr_t spec, - io_entity_t *entity); -static int dummy_block_len(io_entity_t *entity, size_t *length); -static int dummy_block_read(io_entity_t *entity, uintptr_t buffer, - size_t length, size_t *length_read); -static int dummy_block_close(io_entity_t *entity); -static int dummy_dev_close(io_dev_info_t *dev_info); - - -static const io_dev_connector_t dummy_dev_connector = { - .dev_open = dummy_dev_open -}; - - -static const io_dev_funcs_t dummy_dev_funcs = { - .type = device_type_dummy, - .open = dummy_block_open, - .seek = NULL, - .size = dummy_block_len, - .read = dummy_block_read, - .write = NULL, - .close = dummy_block_close, - .dev_init = NULL, - .dev_close = dummy_dev_close, -}; - - -static const io_dev_info_t dummy_dev_info = { - .funcs = &dummy_dev_funcs, - .info = (uintptr_t)NULL -}; - - -/* Open a connection to the dummy device */ -static int dummy_dev_open(const uintptr_t dev_spec __attribute__((unused)), - io_dev_info_t **dev_info) -{ - assert(dev_info != NULL); - *dev_info = (io_dev_info_t *)&dummy_dev_info; - - return 0; -} - - -/* Close a connection to the dummy device */ -static int dummy_dev_close(io_dev_info_t *dev_info) -{ - return 0; -} - - -/* Open a file on the dummy device */ -static int dummy_block_open(io_dev_info_t *dev_info, const uintptr_t spec, - io_entity_t *entity) -{ - int result; - const io_block_spec_t *block_spec = (io_block_spec_t *)spec; - - if (current_file.in_use == 0) { - assert(block_spec != NULL); - assert(entity != NULL); - - current_file.in_use = 1; - current_file.size = block_spec->length; - entity->info = (uintptr_t)¤t_file; - result = 0; - } else { - WARN("A Dummy device is already active. Close first.\n"); - result = -ENOMEM; - } - - return result; -} - - -/* Return the size of a file on the dummy device */ -static int dummy_block_len(io_entity_t *entity, size_t *length) -{ - assert(entity != NULL); - assert(length != NULL); - - *length = ((struct file_state *)entity->info)->size; - - return 0; -} - - -/* Read data from a file on the dummy device */ -static int dummy_block_read(io_entity_t *entity, uintptr_t buffer, - size_t length, size_t *length_read) -{ - assert(length_read != NULL); - - *length_read = length; - - return 0; -} - - -/* Close a file on the dummy device */ -static int dummy_block_close(io_entity_t *entity) -{ - assert(entity != NULL); - - entity->info = 0; - current_file.in_use = 0; - - return 0; -} - - -/* Exported functions */ - -/* Register the dummy driver with the IO abstraction */ -int register_io_dev_dummy(const io_dev_connector_t **dev_con) -{ - int result; - - assert(dev_con != NULL); - - result = io_register_device(&dummy_dev_info); - if (result == 0) - *dev_con = &dummy_dev_connector; - - return result; -} |