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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/block_dev/empty/nrf_block_dev_empty.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/block_dev/empty/nrf_block_dev_empty.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/block_dev/empty/nrf_block_dev_empty.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/block_dev/empty/nrf_block_dev_empty.c new file mode 100644 index 0000000..ab9f5c7 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/block_dev/empty/nrf_block_dev_empty.c @@ -0,0 +1,210 @@ +/** + * Copyright (c) 2016 - 2018, Nordic Semiconductor ASA + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form, except as embedded into a Nordic + * Semiconductor ASA integrated circuit in a product or a software update for + * such product, must reproduce the above copyright notice, this list of + * conditions and the following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * 3. Neither the name of Nordic Semiconductor ASA nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 4. This software, with or without modification, must only be used with a + * Nordic Semiconductor ASA integrated circuit. + * + * 5. Any software provided in binary form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +#include "nrf_block_dev_empty.h" + +/**@file + * + * @ingroup nrf_block_dev + * @{ + * + * @brief This module implements block device API. It would behave like: + * - /dev/empty for write operations + * - /dev/zero for read operations + */ + +static ret_code_t block_dev_empty_init(nrf_block_dev_t const * p_blk_dev, + nrf_block_dev_ev_handler ev_handler, + void const * p_context) +{ + ASSERT(p_blk_dev); + nrf_block_dev_empty_t const * p_empty_dev = + CONTAINER_OF(p_blk_dev, nrf_block_dev_empty_t, block_dev); + nrf_block_dev_empty_work_t * p_work = p_empty_dev->p_work; + + /* Calculate block device geometry.... */ + p_work->geometry.blk_size = p_empty_dev->empty_config.block_size; + p_work->geometry.blk_count = p_empty_dev->empty_config.block_count; + p_work->p_context = p_context; + p_work->ev_handler = ev_handler; + + if (p_work->ev_handler) + { + /*Asynchronous operation (simulation)*/ + const nrf_block_dev_event_t ev = { + NRF_BLOCK_DEV_EVT_INIT, + NRF_BLOCK_DEV_RESULT_SUCCESS, + NULL, + p_work->p_context + }; + + p_work->ev_handler(p_blk_dev, &ev); + } + + return NRF_SUCCESS; +} + +static ret_code_t block_dev_empty_uninit(nrf_block_dev_t const * p_blk_dev) +{ + ASSERT(p_blk_dev); + nrf_block_dev_empty_t const * p_empty_dev = + CONTAINER_OF(p_blk_dev, nrf_block_dev_empty_t, block_dev); + nrf_block_dev_empty_work_t * p_work = p_empty_dev->p_work; + + if (p_work->ev_handler) + { + /*Asynchronous operation (simulation)*/ + const nrf_block_dev_event_t ev = { + NRF_BLOCK_DEV_EVT_UNINIT, + NRF_BLOCK_DEV_RESULT_SUCCESS, + NULL, + p_work->p_context + }; + + p_work->ev_handler(p_blk_dev, &ev); + } + + memset(p_work, 0, sizeof(nrf_block_dev_empty_work_t)); + return NRF_SUCCESS; +} + +static ret_code_t block_dev_empty_read_req(nrf_block_dev_t const * p_blk_dev, + nrf_block_req_t const * p_blk) +{ + ASSERT(p_blk_dev); + ASSERT(p_blk); + nrf_block_dev_empty_t const * p_empty_dev = + CONTAINER_OF(p_blk_dev, nrf_block_dev_empty_t, block_dev); + nrf_block_dev_empty_work_t * p_work = p_empty_dev->p_work; + + memset(p_blk->p_buff, 0, p_empty_dev->p_work->geometry.blk_size * p_blk->blk_count); + if (p_work->ev_handler) + { + /*Asynchronous operation (simulation)*/ + const nrf_block_dev_event_t ev = { + NRF_BLOCK_DEV_EVT_BLK_READ_DONE, + NRF_BLOCK_DEV_RESULT_SUCCESS, + p_blk, + p_work->p_context + }; + + p_work->ev_handler(p_blk_dev, &ev); + } + + return NRF_SUCCESS; +} + +static ret_code_t block_dev_empty_write_req(nrf_block_dev_t const * p_blk_dev, + nrf_block_req_t const * p_blk) +{ + ASSERT(p_blk_dev); + ASSERT(p_blk); + nrf_block_dev_empty_t const * p_empty_dev = + CONTAINER_OF(p_blk_dev, nrf_block_dev_empty_t, block_dev); + nrf_block_dev_empty_work_t * p_work = p_empty_dev->p_work; + + if (p_work->ev_handler) + { + /*Asynchronous operation (simulation)*/ + const nrf_block_dev_event_t ev = { + NRF_BLOCK_DEV_EVT_BLK_WRITE_DONE, + NRF_BLOCK_DEV_RESULT_SUCCESS, + p_blk, + p_work->p_context + }; + + p_work->ev_handler(p_blk_dev, &ev); + } + + return NRF_SUCCESS; +} + +static ret_code_t block_dev_empty_ioctl(nrf_block_dev_t const * p_blk_dev, + nrf_block_dev_ioctl_req_t req, void * p_data) +{ + nrf_block_dev_empty_t const * p_empty_dev = + CONTAINER_OF(p_blk_dev, nrf_block_dev_empty_t, block_dev); + switch (req) + { + case NRF_BLOCK_DEV_IOCTL_REQ_CACHE_FLUSH: + { + bool * p_flushing = p_data; + if (p_flushing) + { + *p_flushing = false; + } + return NRF_SUCCESS; + } + case NRF_BLOCK_DEV_IOCTL_REQ_INFO_STRINGS: + { + if (p_data == NULL) + { + return NRF_ERROR_INVALID_PARAM; + } + + nrf_block_dev_info_strings_t const * * pp_strings = p_data; + *pp_strings = &p_empty_dev->info_strings; + return NRF_SUCCESS; + } + default: + break; + } + + return NRF_ERROR_NOT_SUPPORTED; +} + +static nrf_block_dev_geometry_t const * block_dev_empty_geometry(nrf_block_dev_t const * p_blk_dev) +{ + ASSERT(p_blk_dev); + nrf_block_dev_empty_t const * p_empty_dev = + CONTAINER_OF(p_blk_dev, nrf_block_dev_empty_t, block_dev); + nrf_block_dev_empty_work_t const * p_work = p_empty_dev->p_work; + + return &p_work->geometry; +} + +const nrf_block_dev_ops_t nrf_block_device_empty_ops = { + .init = block_dev_empty_init, + .uninit = block_dev_empty_uninit, + .read_req = block_dev_empty_read_req, + .write_req = block_dev_empty_write_req, + .ioctl = block_dev_empty_ioctl, + .geometry = block_dev_empty_geometry, +}; + |