437 lines
16 KiB
C
437 lines
16 KiB
C
/*
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ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* @file hal_wspi.h
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* @brief WSPI Driver macros and structures.
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*
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* @addtogroup WSPI
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* @{
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*/
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#ifndef HAL_WSPI_H
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#define HAL_WSPI_H
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#if (HAL_USE_WSPI == TRUE) || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver constants. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver pre-compile time settings. */
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/*===========================================================================*/
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/**
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* @name WSPI configuration options
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* @{
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*/
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/**
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* @brief Enables synchronous APIs.
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* @note Disabling this option saves both code and data space.
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*/
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#if !defined(WSPI_USE_WAIT) || defined(__DOXYGEN__)
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#define WSPI_USE_WAIT TRUE
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#endif
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/**
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* @brief Enables the @p wspiAcquireBus() and @p wspiReleaseBus() APIs.
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* @note Disabling this option saves both code and data space.
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*/
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#if !defined(WSPI_USE_MUTUAL_EXCLUSION) || defined(__DOXYGEN__)
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#define WSPI_USE_MUTUAL_EXCLUSION TRUE
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#endif
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/** @} */
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver data structures and types. */
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/*===========================================================================*/
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/**
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* @brief Driver state machine possible states.
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*/
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typedef enum {
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WSPI_UNINIT = 0, /**< Not initialized. */
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WSPI_STOP = 1, /**< Stopped. */
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WSPI_READY = 2, /**< Ready. */
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WSPI_ACTIVE = 3, /**< Exchanging data. */
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WSPI_COMPLETE = 4, /**< Asynchronous operation complete. */
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WSPI_MEMMAP = 5 /**< In memory mapped mode. */
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} wspistate_t;
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/**
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* @brief Type of a structure representing an WSPI driver.
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*/
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typedef struct hal_wspi_driver WSPIDriver;
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/**
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* @brief Type of a structure representing an WSPI driver configuration.
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*/
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typedef struct hal_wspi_config WSPIConfig;
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/**
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* @brief Type of a WSPI notification callback.
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*
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* @param[in] wspip pointer to the @p WSPIDriver object triggering the
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* callback
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*/
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typedef void (*wspicallback_t)(WSPIDriver *wspip);
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/**
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* @brief Type of a WSPI command descriptor.
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*/
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typedef struct {
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/**
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* @brief Transfer configuration field.
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*/
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uint32_t cfg;
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/**
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* @brief Command phase data.
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*/
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uint32_t cmd;
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/**
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* @brief Address phase data.
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*/
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uint32_t addr;
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/**
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* @brief Alternate phase data.
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*/
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uint32_t alt;
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/**
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* @brief Number of dummy cycles to be inserted.
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*/
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uint32_t dummy;
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} wspi_command_t;
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/* Including the low level driver header, it exports information required
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for completing types.*/
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#include "hal_wspi_lld.h"
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#if !defined(WSPI_SUPPORTS_MEMMAP)
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#error "low level does not define WSPI_SUPPORTS_MEMMAP"
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#endif
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#if !defined(WSPI_DEFAULT_CFG_MASKS)
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#error "low level does not define WSPI_DEFAULT_CFG_MASKS"
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#endif
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/**
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* @brief Driver configuration structure.
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*/
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struct hal_wspi_config {
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/**
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* @brief Operation complete callback or @p NULL.
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*/
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wspicallback_t end_cb;
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/* End of the mandatory fields.*/
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wspi_lld_config_fields;
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};
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/**
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* @brief Structure representing an WSPI driver.
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*/
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struct hal_wspi_driver {
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/**
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* @brief Driver state.
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*/
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wspistate_t state;
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/**
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* @brief Current configuration data.
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*/
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const WSPIConfig *config;
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#if (WSPI_USE_WAIT == TRUE) || defined(__DOXYGEN__)
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/**
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* @brief Waiting thread.
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*/
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thread_reference_t thread;
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#endif /* WSPI_USE_WAIT */
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#if (WSPI_USE_MUTUAL_EXCLUSION == TRUE) || defined(__DOXYGEN__)
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/**
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* @brief Mutex protecting the peripheral.
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*/
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mutex_t mutex;
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#endif /* WSPI_USE_MUTUAL_EXCLUSION */
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#if defined(WSPI_DRIVER_EXT_FIELDS)
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WSPI_DRIVER_EXT_FIELDS
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#endif
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/* End of the mandatory fields.*/
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wspi_lld_driver_fields;
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};
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/*===========================================================================*/
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/* Driver macros. */
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/*===========================================================================*/
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#if (WSPI_DEFAULT_CFG_MASKS == TRUE) || defined(__DOXYGEN__)
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/**
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* @name Transfer options
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* @note The low level driver has the option to override the following
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* definitions and use its own ones. In must take care to use
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* the same name for the same function or compatibility is not
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* ensured.
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* @{
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*/
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#define WSPI_CFG_CMD_MODE_MASK (7LU << 0LU)
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#define WSPI_CFG_CMD_MODE_NONE (0LU << 0LU)
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#define WSPI_CFG_CMD_MODE_ONE_LINE (1LU << 0LU)
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#define WSPI_CFG_CMD_MODE_TWO_LINES (2LU << 0LU)
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#define WSPI_CFG_CMD_MODE_FOUR_LINES (3LU << 0LU)
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#define WSPI_CFG_CMD_MODE_EIGHT_LINES (4LU << 0LU)
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#define WSPI_CFG_CMD_DTR (1LU << 3LU)
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#define WSPI_CFG_CMD_SIZE_MASK (3LU << 4LU)
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#define WSPI_CFG_CMD_SIZE_8 (0LU << 4LU)
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#define WSPI_CFG_CMD_SIZE_16 (1LU << 4LU)
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#define WSPI_CFG_CMD_SIZE_24 (2LU << 4LU)
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#define WSPI_CFG_CMD_SIZE_32 (3LU << 4LU)
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#define WSPI_CFG_ADDR_MODE_MASK (7LU << 8LU)
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#define WSPI_CFG_ADDR_MODE_NONE (0LU << 8LU)
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#define WSPI_CFG_ADDR_MODE_ONE_LINE (1LU << 8LU)
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#define WSPI_CFG_ADDR_MODE_TWO_LINES (2LU << 8LU)
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#define WSPI_CFG_ADDR_MODE_FOUR_LINES (3LU << 8LU)
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#define WSPI_CFG_ADDR_MODE_EIGHT_LINES (4LU << 8LU)
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#define WSPI_CFG_ADDR_DTR (1LU << 11LU)
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#define WSPI_CFG_ADDR_SIZE_MASK (3LU << 12LU)
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#define WSPI_CFG_ADDR_SIZE_8 (0LU << 12LU)
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#define WSPI_CFG_ADDR_SIZE_16 (1LU << 12LU)
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#define WSPI_CFG_ADDR_SIZE_24 (2LU << 12LU)
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#define WSPI_CFG_ADDR_SIZE_32 (3LU << 12LU)
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#define WSPI_CFG_ALT_MODE_MASK (7LU << 16LU)
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#define WSPI_CFG_ALT_MODE_NONE (0LU << 16LU)
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#define WSPI_CFG_ALT_MODE_ONE_LINE (1LU << 16LU)
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#define WSPI_CFG_ALT_MODE_TWO_LINES (2LU << 16LU)
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#define WSPI_CFG_ALT_MODE_FOUR_LINES (3LU << 16LU)
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#define WSPI_CFG_ALT_MODE_EIGHT_LINES (4LU << 16LU)
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#define WSPI_CFG_ALT_DTR (1LU << 19LU)
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#define WSPI_CFG_ALT_SIZE_MASK (3LU << 20LU)
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#define WSPI_CFG_ALT_SIZE_8 (0LU << 20LU)
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#define WSPI_CFG_ALT_SIZE_16 (1LU << 20LU)
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#define WSPI_CFG_ALT_SIZE_24 (2LU << 20LU)
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#define WSPI_CFG_ALT_SIZE_32 (3LU << 20LU)
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#define WSPI_CFG_DATA_MODE_MASK (7LU << 24LU)
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#define WSPI_CFG_DATA_MODE_NONE (0LU << 24LU)
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#define WSPI_CFG_DATA_MODE_ONE_LINE (1LU << 24LU)
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#define WSPI_CFG_DATA_MODE_TWO_LINES (2LU << 24LU)
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#define WSPI_CFG_DATA_MODE_FOUR_LINES (3LU << 24LU)
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#define WSPI_CFG_DATA_MODE_EIGHT_LINES (4LU << 24LU)
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#define WSPI_CFG_DATA_DTR (1LU << 27LU)
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#define WSPI_CFG_DQS_ENABLE (1LU << 29LU)
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#define WSPI_CFG_SIOO (1LU << 31LU)
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#define WSPI_CFG_ALL_DTR (WSPI_CFG_CMD_DTR | \
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WSPI_CFG_ADDR_DTR | \
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WSPI_CFG_ALT_DTR | \
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WSPI_CFG_DATA_DTR)
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/** @} */
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#endif /* WSPI_USE_DEFAULT_CFG_MASKS == TRUE */
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/**
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* @name Macro Functions
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* @{
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*/
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/**
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* @brief Sends a command without data phase.
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* @post At the end of the operation the configured callback is invoked.
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*
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* @param[in] wspip pointer to the @p WSPIDriver object
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* @param[in] cmdp pointer to the command descriptor
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*
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* @iclass
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*/
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#define wspiStartCommandI(wspip, cmdp) { \
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osalDbgAssert(((cmdp)->cfg & WSPI_CFG_DATA_MODE_MASK) == \
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WSPI_CFG_DATA_MODE_NONE, \
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"data mode specified"); \
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(wspip)->state = WSPI_ACTIVE; \
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wspi_lld_command(wspip, cmdp); \
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}
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/**
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* @brief Sends data over the WSPI bus.
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* @details This asynchronous function starts a transmit operation.
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* @post At the end of the operation the configured callback is invoked.
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*
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* @param[in] wspip pointer to the @p WSPIDriver object
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* @param[in] cmdp pointer to the command descriptor
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* @param[in] n number of bytes to send or zero if no data phase
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* @param[in] txbuf the pointer to the transmit buffer
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*
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* @iclass
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*/
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#define wspiStartSendI(wspip, cmdp, n, txbuf) { \
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osalDbgAssert(((cmdp)->cfg & WSPI_CFG_DATA_MODE_MASK) != \
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WSPI_CFG_DATA_MODE_NONE, \
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"data mode required"); \
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(wspip)->state = WSPI_ACTIVE; \
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wspi_lld_send(wspip, cmdp, n, txbuf); \
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}
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/**
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* @brief Receives data from the WSPI bus.
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* @details This asynchronous function starts a receive operation.
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* @post At the end of the operation the configured callback is invoked.
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*
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* @param[in] wspip pointer to the @p WSPIDriver object
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* @param[in] cmdp pointer to the command descriptor
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* @param[in] n number of bytes to receive or zero if no data phase
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* @param[out] rxbuf the pointer to the receive buffer
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*
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* @iclass
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*/
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#define wspiStartReceiveI(wspip, cmdp, n, rxbuf) { \
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osalDbgAssert(((cmdp)->cfg & WSPI_CFG_DATA_MODE_MASK) != \
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WSPI_CFG_DATA_MODE_NONE, \
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"data mode required"); \
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(wspip)->state = WSPI_ACTIVE; \
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wspi_lld_receive(wspip, cmdp, n, rxbuf); \
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}
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#if (WSPI_SUPPORTS_MEMMAP == TRUE) || defined(__DOXYGEN__)
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/**
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* @brief Maps in memory space a WSPI flash device.
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* @pre The memory flash device must be initialized appropriately
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* before mapping it in memory space.
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*
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* @param[in] wspip pointer to the @p WSPIDriver object
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* @param[in] cmdp pointer to the command descriptor
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* @param[out] addrp pointer to the memory start address of the mapped
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* flash or @p NULL
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*
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* @iclass
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*/
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#define wspiMapFlashI(wspip, cmdp, addrp) \
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wspi_lld_map_flash(wspip, cmdp, addrp)
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/**
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* @brief Maps in memory space a WSPI flash device.
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* @post The memory flash device must be re-initialized for normal
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* commands exchange.
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*
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* @param[in] wspip pointer to the @p WSPIDriver object
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*
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* @iclass
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*/
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#define wspiUnmapFlashI(wspip) \
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wspi_lld_unmap_flash(wspip)
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#endif /* WSPI_SUPPORTS_MEMMAP == TRUE */
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/** @} */
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/**
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* @name Low level driver helper macros
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* @{
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*/
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#if (WSPI_USE_WAIT == TRUE) || defined(__DOXYGEN__)
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/**
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* @brief Wakes up the waiting thread.
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*
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* @param[in] wspip pointer to the @p WSPIDriver object
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*
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* @notapi
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*/
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#define _wspi_wakeup_isr(wspip) { \
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osalSysLockFromISR(); \
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osalThreadResumeI(&(wspip)->thread, MSG_OK); \
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osalSysUnlockFromISR(); \
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}
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#else /* !WSPI_USE_WAIT */
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#define _wspi_wakeup_isr(wspip)
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#endif /* !WSPI_USE_WAIT */
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/**
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* @brief Common ISR code.
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* @details This code handles the portable part of the ISR code:
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* - Callback invocation.
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* - Waiting thread wakeup, if any.
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* - Driver state transitions.
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* .
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* @note This macro is meant to be used in the low level drivers
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* implementation only.
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*
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* @param[in] wspip pointer to the @p WSPIDriver object
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*
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* @notapi
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*/
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#define _wspi_isr_code(wspip) { \
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if ((wspip)->config->end_cb) { \
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(wspip)->state = WSPI_COMPLETE; \
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(wspip)->config->end_cb(wspip); \
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if ((wspip)->state == WSPI_COMPLETE) \
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(wspip)->state = WSPI_READY; \
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} \
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else \
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(wspip)->state = WSPI_READY; \
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_wspi_wakeup_isr(wspip); \
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}
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/** @} */
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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void wspiInit(void);
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void wspiObjectInit(WSPIDriver *wspip);
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void wspiStart(WSPIDriver *wspip, const WSPIConfig *config);
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void wspiStop(WSPIDriver *wspip);
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void wspiStartCommand(WSPIDriver *wspip, const wspi_command_t *cmdp);
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void wspiStartSend(WSPIDriver *wspip, const wspi_command_t *cmdp,
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size_t n, const uint8_t *txbuf);
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void wspiStartReceive(WSPIDriver *wspip, const wspi_command_t *cmdp,
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size_t n, uint8_t *rxbuf);
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#if WSPI_USE_WAIT == TRUE
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void wspiCommand(WSPIDriver *wspip, const wspi_command_t *cmdp);
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void wspiSend(WSPIDriver *wspip, const wspi_command_t *cmdp,
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size_t n, const uint8_t *txbuf);
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void wspiReceive(WSPIDriver *wspip, const wspi_command_t *cmdp,
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size_t n, uint8_t *rxbuf);
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#endif
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#if WSPI_SUPPORTS_MEMMAP == TRUE
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void wspiMapFlash(WSPIDriver *wspip,
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const wspi_command_t *cmdp,
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uint8_t **addrp);
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void wspiUnmapFlash(WSPIDriver *wspip);
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#endif
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#if WSPI_USE_MUTUAL_EXCLUSION == TRUE
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void wspiAcquireBus(WSPIDriver *wspip);
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void wspiReleaseBus(WSPIDriver *wspip);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* HAL_USE_WSPI == TRUE */
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#endif /* HAL_WSPI_H */
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/** @} */
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