/*
ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/**
* @file hal_wspi.h
* @brief WSPI Driver macros and structures.
*
* @addtogroup WSPI
* @{
*/
#ifndef HAL_WSPI_H
#define HAL_WSPI_H
#if (HAL_USE_WSPI == TRUE) || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @name WSPI configuration options
* @{
*/
/**
* @brief Enables synchronous APIs.
* @note Disabling this option saves both code and data space.
*/
#if !defined(WSPI_USE_WAIT) || defined(__DOXYGEN__)
#define WSPI_USE_WAIT TRUE
#endif
/**
* @brief Enables the @p wspiAcquireBus() and @p wspiReleaseBus() APIs.
* @note Disabling this option saves both code and data space.
*/
#if !defined(WSPI_USE_MUTUAL_EXCLUSION) || defined(__DOXYGEN__)
#define WSPI_USE_MUTUAL_EXCLUSION TRUE
#endif
/** @} */
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief Driver state machine possible states.
*/
typedef enum {
WSPI_UNINIT = 0, /**< Not initialized. */
WSPI_STOP = 1, /**< Stopped. */
WSPI_READY = 2, /**< Ready. */
WSPI_SEND = 3, /**< Sending data. */
WSPI_RECEIVE = 4, /**< Receiving data. */
WSPI_COMPLETE = 5, /**< Asynchronous operation complete. */
WSPI_MEMMAP = 6 /**< In memory mapped mode. */
} wspistate_t;
/**
* @brief Type of a structure representing an WSPI driver.
*/
typedef struct hal_wspi_driver WSPIDriver;
/**
* @brief Type of a structure representing an WSPI driver configuration.
*/
typedef struct hal_wspi_config WSPIConfig;
/**
* @brief Type of a WSPI notification callback.
*
* @param[in] wspip pointer to the @p WSPIDriver object triggering the
* callback
*/
typedef void (*wspicallback_t)(WSPIDriver *wspip);
/**
* @brief Type of a WSPI command descriptor.
*/
typedef struct {
/**
* @brief Transfer configuration field.
*/
uint32_t cfg;
/**
* @brief Command phase data.
*/
uint32_t cmd;
/**
* @brief Address phase data.
*/
uint32_t addr;
/**
* @brief Alternate phase data.
*/
uint32_t alt;
/**
* @brief Number of dummy cycles to be inserted.
*/
uint32_t dummy;
} wspi_command_t;
/* Including the low level driver header, it exports information required
for completing types.*/
#include "hal_wspi_lld.h"
#if !defined(WSPI_SUPPORTS_MEMMAP)
#error "low level does not define WSPI_SUPPORTS_MEMMAP"
#endif
#if !defined(WSPI_DEFAULT_CFG_MASKS)
#error "low level does not define WSPI_DEFAULT_CFG_MASKS"
#endif
/**
* @brief Driver configuration structure.
*/
struct hal_wspi_config {
/**
* @brief Operation complete callback or @p NULL.
*/
wspicallback_t end_cb;
/**
* @brief Operation error callback or @p NULL.
*/
wspicallback_t error_cb;
/* End of the mandatory fields.*/
wspi_lld_config_fields;
};
/**
* @brief Structure representing an WSPI driver.
*/
struct hal_wspi_driver {
/**
* @brief Driver state.
*/
wspistate_t state;
/**
* @brief Current configuration data.
*/
const WSPIConfig *config;
#if (WSPI_USE_WAIT == TRUE) || defined(__DOXYGEN__)
/**
* @brief Waiting thread.
*/
thread_reference_t thread;
#endif /* WSPI_USE_WAIT */
#if (WSPI_USE_MUTUAL_EXCLUSION == TRUE) || defined(__DOXYGEN__)
/**
* @brief Mutex protecting the peripheral.
*/
mutex_t mutex;
#endif /* WSPI_USE_MUTUAL_EXCLUSION */
#if defined(WSPI_DRIVER_EXT_FIELDS)
WSPI_DRIVER_EXT_FIELDS
#endif
/* End of the mandatory fields.*/
wspi_lld_driver_fields;
};
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
#if (WSPI_DEFAULT_CFG_MASKS == TRUE) || defined(__DOXYGEN__)
/**
* @name Transfer options
* @note The low level driver has the option to override the following
* definitions and use its own ones. In must take care to use
* the same name for the same function or compatibility is not
* ensured.
* @{
*/
#define WSPI_CFG_CMD_MODE_MASK (7LU << 0LU)
#define WSPI_CFG_CMD_MODE_NONE (0LU << 0LU)
#define WSPI_CFG_CMD_MODE_ONE_LINE (1LU << 0LU)
#define WSPI_CFG_CMD_MODE_TWO_LINES (2LU << 0LU)
#define WSPI_CFG_CMD_MODE_FOUR_LINES (3LU << 0LU)
#define WSPI_CFG_CMD_MODE_EIGHT_LINES (4LU << 0LU)
#define WSPI_CFG_CMD_DTR (1LU << 3LU)
#define WSPI_CFG_CMD_SIZE_MASK (3LU << 4LU)
#define WSPI_CFG_CMD_SIZE_8 (0LU << 4LU)
#define WSPI_CFG_CMD_SIZE_16 (1LU << 4LU)
#define WSPI_CFG_CMD_SIZE_24 (2LU << 4LU)
#define WSPI_CFG_CMD_SIZE_32 (3LU << 4LU)
#define WSPI_CFG_ADDR_MODE_MASK (7LU << 8LU)
#define WSPI_CFG_ADDR_MODE_NONE (0LU << 8LU)
#define WSPI_CFG_ADDR_MODE_ONE_LINE (1LU << 8LU)
#define WSPI_CFG_ADDR_MODE_TWO_LINES (2LU << 8LU)
#define WSPI_CFG_ADDR_MODE_FOUR_LINES (3LU << 8LU)
#define WSPI_CFG_ADDR_MODE_EIGHT_LINES (4LU << 8LU)
#define WSPI_CFG_ADDR_DTR (1LU << 11LU)
#define WSPI_CFG_ADDR_SIZE_MASK (3LU << 12LU)
#define WSPI_CFG_ADDR_SIZE_8 (0LU << 12LU)
#define WSPI_CFG_ADDR_SIZE_16 (1LU << 12LU)
#define WSPI_CFG_ADDR_SIZE_24 (2LU << 12LU)
#define WSPI_CFG_ADDR_SIZE_32 (3LU << 12LU)
#define WSPI_CFG_ALT_MODE_MASK (7LU << 16LU)
#define WSPI_CFG_ALT_MODE_NONE (0LU << 16LU)
#define WSPI_CFG_ALT_MODE_ONE_LINE (1LU << 16LU)
#define WSPI_CFG_ALT_MODE_TWO_LINES (2LU << 16LU)
#define WSPI_CFG_ALT_MODE_FOUR_LINES (3LU << 16LU)
#define WSPI_CFG_ALT_MODE_EIGHT_LINES (4LU << 16LU)
#define WSPI_CFG_ALT_DTR (1LU << 19LU)
#define WSPI_CFG_ALT_SIZE_MASK (3LU << 20LU)
#define WSPI_CFG_ALT_SIZE_8 (0LU << 20LU)
#define WSPI_CFG_ALT_SIZE_16 (1LU << 20LU)
#define WSPI_CFG_ALT_SIZE_24 (2LU << 20LU)
#define WSPI_CFG_ALT_SIZE_32 (3LU << 20LU)
#define WSPI_CFG_DATA_MODE_MASK (7LU << 24LU)
#define WSPI_CFG_DATA_MODE_NONE (0LU << 24LU)
#define WSPI_CFG_DATA_MODE_ONE_LINE (1LU << 24LU)
#define WSPI_CFG_DATA_MODE_TWO_LINES (2LU << 24LU)
#define WSPI_CFG_DATA_MODE_FOUR_LINES (3LU << 24LU)
#define WSPI_CFG_DATA_MODE_EIGHT_LINES (4LU << 24LU)
#define WSPI_CFG_DATA_DTR (1LU << 27LU)
#define WSPI_CFG_DQS_ENABLE (1LU << 29LU)
#define WSPI_CFG_SIOO (1LU << 31LU)
#define WSPI_CFG_ALL_DTR (WSPI_CFG_CMD_DTR | \
WSPI_CFG_ADDR_DTR | \
WSPI_CFG_ALT_DTR | \
WSPI_CFG_DATA_DTR)
/** @} */
#endif /* WSPI_USE_DEFAULT_CFG_MASKS == TRUE */
/**
* @name Macro Functions
* @{
*/
/**
* @brief Sends a command without data phase.
* @post At the end of the operation the configured callback is invoked.
*
* @param[in] wspip pointer to the @p WSPIDriver object
* @param[in] cmdp pointer to the command descriptor
*
* @iclass
*/
#define wspiStartCommandI(wspip, cmdp) { \
osalDbgAssert(((cmdp)->cfg & WSPI_CFG_DATA_MODE_MASK) == \
WSPI_CFG_DATA_MODE_NONE, \
"data mode specified"); \
(wspip)->state = WSPI_SEND; \
wspi_lld_command(wspip, cmdp); \
}
/**
* @brief Sends data over the WSPI bus.
* @details This asynchronous function starts a transmit operation.
* @post At the end of the operation the configured callback is invoked.
*
* @param[in] wspip pointer to the @p WSPIDriver object
* @param[in] cmdp pointer to the command descriptor
* @param[in] n number of bytes to send or zero if no data phase
* @param[in] txbuf the pointer to the transmit buffer
*
* @iclass
*/
#define wspiStartSendI(wspip, cmdp, n, txbuf) { \
osalDbgAssert(((cmdp)->cfg & WSPI_CFG_DATA_MODE_MASK) != \
WSPI_CFG_DATA_MODE_NONE, \
"data mode required"); \
(wspip)->state = WSPI_SEND; \
wspi_lld_send(wspip, cmdp, n, txbuf); \
}
/**
* @brief Receives data from the WSPI bus.
* @details This asynchronous function starts a receive operation.
* @post At the end of the operation the configured callback is invoked.
*
* @param[in] wspip pointer to the @p WSPIDriver object
* @param[in] cmdp pointer to the command descriptor
* @param[in] n number of bytes to receive or zero if no data phase
* @param[out] rxbuf the pointer to the receive buffer
*
* @iclass
*/
#define wspiStartReceiveI(wspip, cmdp, n, rxbuf) { \
osalDbgAssert(((cmdp)->cfg & WSPI_CFG_DATA_MODE_MASK) != \
WSPI_CFG_DATA_MODE_NONE, \
"data mode required"); \
(wspip)->state = WSPI_RECEIVE; \
wspi_lld_receive(wspip, cmdp, n, rxbuf); \
}
#if (WSPI_SUPPORTS_MEMMAP == TRUE) || defined(__DOXYGEN__)
/**
* @brief Maps in memory space a WSPI flash device.
* @pre The memory flash device must be initialized appropriately
* before mapping it in memory space.
*
* @param[in] wspip pointer to the @p WSPIDriver object
* @param[in] cmdp pointer to the command descriptor
* @param[out] addrp pointer to the memory start address of the mapped
* flash or @p NULL
*
* @iclass
*/
#define wspiMapFlashI(wspip, cmdp, addrp) \
wspi_lld_map_flash(wspip, cmdp, addrp)
/**
* @brief Maps in memory space a WSPI flash device.
* @post The memory flash device must be re-initialized for normal
* commands exchange.
*
* @param[in] wspip pointer to the @p WSPIDriver object
*
* @iclass
*/
#define wspiUnmapFlashI(wspip) \
wspi_lld_unmap_flash(wspip)
#endif /* WSPI_SUPPORTS_MEMMAP == TRUE */
/** @} */
/**
* @name Low level driver helper macros
* @{
*/
#if (WSPI_USE_WAIT == TRUE) || defined(__DOXYGEN__)
/**
* @brief Wakes up the waiting thread.
*
* @param[in] wspip pointer to the @p WSPIDriver object
* @param[in] msg the wakeup message
*
* @notapi
*/
#define _wspi_wakeup_isr(wspip, msg) { \
osalSysLockFromISR(); \
osalThreadResumeI(&(wspip)->thread, msg); \
osalSysUnlockFromISR(); \
}
#else /* !WSPI_USE_WAIT */
#define _wspi_wakeup_isr(wspip, msg)
#endif /* !WSPI_USE_WAIT */
/**
* @brief Common ISR code.
* @details This code handles the portable part of the ISR code:
* - Callback invocation.
* - Waiting thread wakeup, if any.
* - Driver state transitions.
* .
* @note This macro is meant to be used in the low level drivers
* implementation only.
*
* @param[in] wspip pointer to the @p WSPIDriver object
*
* @notapi
*/
#define _wspi_isr_code(wspip) { \
if ((wspip)->config->end_cb) { \
(wspip)->state = WSPI_COMPLETE; \
(wspip)->config->end_cb(wspip); \
if ((wspip)->state == WSPI_COMPLETE) \
(wspip)->state = WSPI_READY; \
} \
else \
(wspip)->state = WSPI_READY; \
_wspi_wakeup_isr(wspip, MSG_OK); \
}
/**
* @brief Common error ISR code.
* @details This code handles the portable part of the ISR code:
* - Callback invocation.
* - Waiting thread wakeup, if any.
* - Driver state transitions.
* .
* @note This macro is meant to be used in the low level drivers
* implementation only.
*
* @param[in] wspip pointer to the @p WSPIDriver object
*
* @notapi
*/
#define _wspi_error_code(wspip) { \
if ((wspip)->config->error_cb) { \
(wspip)->state = WSPI_COMPLETE; \
(wspip)->config->error_cb(wspip); \
if ((wspip)->state == WSPI_COMPLETE) \
(wspip)->state = WSPI_READY; \
} \
else \
(wspip)->state = WSPI_READY; \
_wspi_wakeup_isr(wspip, MSG_RESET); \
}
/** @} */
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#ifdef __cplusplus
extern "C" {
#endif
void wspiInit(void);
void wspiObjectInit(WSPIDriver *wspip);
void wspiStart(WSPIDriver *wspip, const WSPIConfig *config);
void wspiStop(WSPIDriver *wspip);
void wspiStartCommand(WSPIDriver *wspip, const wspi_command_t *cmdp);
void wspiStartSend(WSPIDriver *wspip, const wspi_command_t *cmdp,
size_t n, const uint8_t *txbuf);
void wspiStartReceive(WSPIDriver *wspip, const wspi_command_t *cmdp,
size_t n, uint8_t *rxbuf);
#if WSPI_USE_WAIT == TRUE
bool wspiCommand(WSPIDriver *wspip, const wspi_command_t *cmdp);
bool wspiSend(WSPIDriver *wspip, const wspi_command_t *cmdp,
size_t n, const uint8_t *txbuf);
bool wspiReceive(WSPIDriver *wspip, const wspi_command_t *cmdp,
size_t n, uint8_t *rxbuf);
#endif
#if WSPI_SUPPORTS_MEMMAP == TRUE
void wspiMapFlash(WSPIDriver *wspip,
const wspi_command_t *cmdp,
uint8_t **addrp);
void wspiUnmapFlash(WSPIDriver *wspip);
#endif
#if WSPI_USE_MUTUAL_EXCLUSION == TRUE
void wspiAcquireBus(WSPIDriver *wspip);
void wspiReleaseBus(WSPIDriver *wspip);
#endif
#ifdef __cplusplus
}
#endif
#endif /* HAL_USE_WSPI == TRUE */
#endif /* HAL_WSPI_H */
/** @} */