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Diff: TARGET_KL82Z/TOOLCHAIN_GCC_ARM/fsl_edma.h
- Revision:
- 171:3a7713b1edbc
- Parent:
- 145:64910690c574
diff -r e95d10626187 -r 3a7713b1edbc TARGET_KL82Z/TOOLCHAIN_GCC_ARM/fsl_edma.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_KL82Z/TOOLCHAIN_GCC_ARM/fsl_edma.h Thu Nov 08 11:45:42 2018 +0000 @@ -0,0 +1,880 @@ +/* +* Copyright (c) 2015, Freescale Semiconductor, Inc. +* All rights reserved. +* +* Redistribution and use in source and binary forms, with or without modification, +* are permitted provided that the following conditions are met: +* +* o Redistributions of source code must retain the above copyright notice, this list +* of conditions and the following disclaimer. +* +* o Redistributions in binary form 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. +* +* o Neither the name of Freescale Semiconductor, Inc. nor the names of its +* contributors may be used to endorse or promote products derived from this +* software without specific prior written permission. +* +* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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. +*/ + +#ifndef _FSL_EDMA_H_ +#define _FSL_EDMA_H_ + +#include "fsl_common.h" + +/*! + * @addtogroup edma + * @{ + */ + +/******************************************************************************* + * Definitions + ******************************************************************************/ + +/*! @name Driver version */ +/*@{*/ +/*! @brief eDMA driver version */ +#define FSL_EDMA_DRIVER_VERSION (MAKE_VERSION(2, 0, 1)) /*!< Version 2.0.1. */ +/*@}*/ + +/*! @brief Compute the offset unit from DCHPRI3 */ +#define DMA_DCHPRI_INDEX(channel) (((channel) & ~0x03U) | (3 - ((channel)&0x03U))) + +/*! @brief Get the pointer of DCHPRIn */ +#define DMA_DCHPRIn(base, channel) ((volatile uint8_t *)&(base->DCHPRI3))[DMA_DCHPRI_INDEX(channel)] + +/*! @brief eDMA transfer configuration */ +typedef enum _edma_transfer_size +{ + kEDMA_TransferSize1Bytes = 0x0U, /*!< Source/Destination data transfer size is 1 byte every time */ + kEDMA_TransferSize2Bytes = 0x1U, /*!< Source/Destination data transfer size is 2 bytes every time */ + kEDMA_TransferSize4Bytes = 0x2U, /*!< Source/Destination data transfer size is 4 bytes every time */ + kEDMA_TransferSize16Bytes = 0x4U, /*!< Source/Destination data transfer size is 16 bytes every time */ + kEDMA_TransferSize32Bytes = 0x5U, /*!< Source/Destination data transfer size is 32 bytes every time */ +} edma_transfer_size_t; + +/*! @brief eDMA modulo configuration */ +typedef enum _edma_modulo +{ + kEDMA_ModuloDisable = 0x0U, /*!< Disable modulo */ + kEDMA_Modulo2bytes, /*!< Circular buffer size is 2 bytes. */ + kEDMA_Modulo4bytes, /*!< Circular buffer size is 4 bytes. */ + kEDMA_Modulo8bytes, /*!< Circular buffer size is 8 bytes. */ + kEDMA_Modulo16bytes, /*!< Circular buffer size is 16 bytes. */ + kEDMA_Modulo32bytes, /*!< Circular buffer size is 32 bytes. */ + kEDMA_Modulo64bytes, /*!< Circular buffer size is 64 bytes. */ + kEDMA_Modulo128bytes, /*!< Circular buffer size is 128 bytes. */ + kEDMA_Modulo256bytes, /*!< Circular buffer size is 256 bytes. */ + kEDMA_Modulo512bytes, /*!< Circular buffer size is 512 bytes. */ + kEDMA_Modulo1Kbytes, /*!< Circular buffer size is 1K bytes. */ + kEDMA_Modulo2Kbytes, /*!< Circular buffer size is 2K bytes. */ + kEDMA_Modulo4Kbytes, /*!< Circular buffer size is 4K bytes. */ + kEDMA_Modulo8Kbytes, /*!< Circular buffer size is 8K bytes. */ + kEDMA_Modulo16Kbytes, /*!< Circular buffer size is 16K bytes. */ + kEDMA_Modulo32Kbytes, /*!< Circular buffer size is 32K bytes. */ + kEDMA_Modulo64Kbytes, /*!< Circular buffer size is 64K bytes. */ + kEDMA_Modulo128Kbytes, /*!< Circular buffer size is 128K bytes. */ + kEDMA_Modulo256Kbytes, /*!< Circular buffer size is 256K bytes. */ + kEDMA_Modulo512Kbytes, /*!< Circular buffer size is 512K bytes. */ + kEDMA_Modulo1Mbytes, /*!< Circular buffer size is 1M bytes. */ + kEDMA_Modulo2Mbytes, /*!< Circular buffer size is 2M bytes. */ + kEDMA_Modulo4Mbytes, /*!< Circular buffer size is 4M bytes. */ + kEDMA_Modulo8Mbytes, /*!< Circular buffer size is 8M bytes. */ + kEDMA_Modulo16Mbytes, /*!< Circular buffer size is 16M bytes. */ + kEDMA_Modulo32Mbytes, /*!< Circular buffer size is 32M bytes. */ + kEDMA_Modulo64Mbytes, /*!< Circular buffer size is 64M bytes. */ + kEDMA_Modulo128Mbytes, /*!< Circular buffer size is 128M bytes. */ + kEDMA_Modulo256Mbytes, /*!< Circular buffer size is 256M bytes. */ + kEDMA_Modulo512Mbytes, /*!< Circular buffer size is 512M bytes. */ + kEDMA_Modulo1Gbytes, /*!< Circular buffer size is 1G bytes. */ + kEDMA_Modulo2Gbytes, /*!< Circular buffer size is 2G bytes. */ +} edma_modulo_t; + +/*! @brief Bandwidth control */ +typedef enum _edma_bandwidth +{ + kEDMA_BandwidthStallNone = 0x0U, /*!< No eDMA engine stalls. */ + kEDMA_BandwidthStall4Cycle = 0x2U, /*!< eDMA engine stalls for 4 cycles after each read/write. */ + kEDMA_BandwidthStall8Cycle = 0x3U, /*!< eDMA engine stalls for 8 cycles after each read/write. */ +} edma_bandwidth_t; + +/*! @brief Channel link type */ +typedef enum _edma_channel_link_type +{ + kEDMA_LinkNone = 0x0U, /*!< No channel link */ + kEDMA_MinorLink, /*!< Channel link after each minor loop */ + kEDMA_MajorLink, /*!< Channel link while major loop count exhausted */ +} edma_channel_link_type_t; + +/*!@brief eDMA channel status flags. */ +enum _edma_channel_status_flags +{ + kEDMA_DoneFlag = 0x1U, /*!< DONE flag, set while transfer finished, CITER value exhausted*/ + kEDMA_ErrorFlag = 0x2U, /*!< eDMA error flag, an error occurred in a transfer */ + kEDMA_InterruptFlag = 0x4U, /*!< eDMA interrupt flag, set while an interrupt occurred of this channel */ +}; + +/*! @brief eDMA channel error status flags. */ +enum _edma_error_status_flags +{ + kEDMA_DestinationBusErrorFlag = DMA_ES_DBE_MASK, /*!< Bus error on destination address */ + kEDMA_SourceBusErrorFlag = DMA_ES_SBE_MASK, /*!< Bus error on the source address */ + kEDMA_ScatterGatherErrorFlag = DMA_ES_SGE_MASK, /*!< Error on the Scatter/Gather address, not 32byte aligned. */ + kEDMA_NbytesErrorFlag = DMA_ES_NCE_MASK, /*!< NBYTES/CITER configuration error */ + kEDMA_DestinationOffsetErrorFlag = DMA_ES_DOE_MASK, /*!< Destination offset not aligned with destination size */ + kEDMA_DestinationAddressErrorFlag = DMA_ES_DAE_MASK, /*!< Destination address not aligned with destination size */ + kEDMA_SourceOffsetErrorFlag = DMA_ES_SOE_MASK, /*!< Source offset not aligned with source size */ + kEDMA_SourceAddressErrorFlag = DMA_ES_SAE_MASK, /*!< Source address not aligned with source size*/ + kEDMA_ErrorChannelFlag = DMA_ES_ERRCHN_MASK, /*!< Error channel number of the cancelled channel number */ + kEDMA_ChannelPriorityErrorFlag = DMA_ES_CPE_MASK, /*!< Channel priority is not unique. */ + kEDMA_TransferCanceledFlag = DMA_ES_ECX_MASK, /*!< Transfer cancelled */ +#if defined(FSL_FEATURE_EDMA_CHANNEL_GROUP_COUNT) && FSL_FEATURE_EDMA_CHANNEL_GROUP_COUNT > 1 + kEDMA_GroupPriorityErrorFlag = DMA_ES_GPE_MASK, /*!< Group priority is not unique. */ +#endif + kEDMA_ValidFlag = DMA_ES_VLD_MASK, /*!< No error occurred, this bit is 0. Otherwise, it is 1. */ +}; + +/*! @brief eDMA interrupt source */ +typedef enum _edma_interrupt_enable +{ + kEDMA_ErrorInterruptEnable = 0x1U, /*!< Enable interrupt while channel error occurs. */ + kEDMA_MajorInterruptEnable = DMA_CSR_INTMAJOR_MASK, /*!< Enable interrupt while major count exhausted. */ + kEDMA_HalfInterruptEnable = DMA_CSR_INTHALF_MASK, /*!< Enable interrupt while major count to half value. */ +} edma_interrupt_enable_t; + +/*! @brief eDMA transfer type */ +typedef enum _edma_transfer_type +{ + kEDMA_MemoryToMemory = 0x0U, /*!< Transfer from memory to memory */ + kEDMA_PeripheralToMemory, /*!< Transfer from peripheral to memory */ + kEDMA_MemoryToPeripheral, /*!< Transfer from memory to peripheral */ +} edma_transfer_type_t; + +/*! @brief eDMA transfer status */ +enum _edma_transfer_status +{ + kStatus_EDMA_QueueFull = MAKE_STATUS(kStatusGroup_EDMA, 0), /*!< TCD queue is full. */ + kStatus_EDMA_Busy = MAKE_STATUS(kStatusGroup_EDMA, 1), /*!< Channel is busy and can't handle the + transfer request. */ +}; + +/*! @brief eDMA global configuration structure.*/ +typedef struct _edma_config +{ + bool enableContinuousLinkMode; /*!< Enable (true) continuous link mode. Upon minor loop completion, the channel + activates again if that channel has a minor loop channel link enabled and + the link channel is itself. */ + bool enableHaltOnError; /*!< Enable (true) transfer halt on error. Any error causes the HALT bit to set. + Subsequently, all service requests are ignored until the HALT bit is cleared.*/ + bool enableRoundRobinArbitration; /*!< Enable (true) round robin channel arbitration method, or fixed priority + arbitration is used for channel selection */ + bool enableDebugMode; /*!< Enable(true) eDMA debug mode. When in debug mode, the eDMA stalls the start of + a new channel. Executing channels are allowed to complete. */ +} edma_config_t; + +/*! + * @brief eDMA transfer configuration + * + * This structure configures the source/destination transfer attribute. + * This figure shows the eDMA's transfer model: + * _________________________________________________ + * | Transfer Size | | + * Minor Loop |_______________| Major loop Count 1 | + * Bytes | Transfer Size | | + * ____________|_______________|____________________|--> Minor loop complete + * ____________________________________ + * | | | + * |_______________| Major Loop Count 2 | + * | | | + * |_______________|____________________|--> Minor loop Complete + * + * ---------------------------------------------------------> Transfer complete + */ +typedef struct _edma_transfer_config +{ + uint32_t srcAddr; /*!< Source data address. */ + uint32_t destAddr; /*!< Destination data address. */ + edma_transfer_size_t srcTransferSize; /*!< Source data transfer size. */ + edma_transfer_size_t destTransferSize; /*!< Destination data transfer size. */ + int16_t srcOffset; /*!< Sign-extended offset applied to the current source address to + form the next-state value as each source read is completed. */ + int16_t destOffset; /*!< Sign-extended offset applied to the current destination address to + form the next-state value as each destination write is completed. */ + uint16_t minorLoopBytes; /*!< Bytes to transfer in a minor loop*/ + uint32_t majorLoopCounts; /*!< Major loop iteration count. */ +} edma_transfer_config_t; + +/*! @brief eDMA channel priority configuration */ +typedef struct _edma_channel_Preemption_config +{ + bool enableChannelPreemption; /*!< If true: channel can be suspended by other channel with higher priority */ + bool enablePreemptAbility; /*!< If true: channel can suspend other channel with low priority */ + uint8_t channelPriority; /*!< Channel priority */ +} edma_channel_Preemption_config_t; + +/*! @brief eDMA minor offset configuration */ +typedef struct _edma_minor_offset_config +{ + bool enableSrcMinorOffset; /*!< Enable(true) or Disable(false) source minor loop offset. */ + bool enableDestMinorOffset; /*!< Enable(true) or Disable(false) destination minor loop offset. */ + uint32_t minorOffset; /*!< Offset for minor loop mapping. */ +} edma_minor_offset_config_t; + +/*! + * @brief eDMA TCD. + * + * This structure is same as TCD register which is described in reference manual, + * and is used to configure the scatter/gather feature as a next hardware TCD. + */ +typedef struct _edma_tcd +{ + __IO uint32_t SADDR; /*!< SADDR register, used to save source address */ + __IO uint16_t SOFF; /*!< SOFF register, save offset bytes every transfer */ + __IO uint16_t ATTR; /*!< ATTR register, source/destination transfer size and modulo */ + __IO uint32_t NBYTES; /*!< Nbytes register, minor loop length in bytes */ + __IO uint32_t SLAST; /*!< SLAST register */ + __IO uint32_t DADDR; /*!< DADDR register, used for destination address */ + __IO uint16_t DOFF; /*!< DOFF register, used for destination offset */ + __IO uint16_t CITER; /*!< CITER register, current minor loop numbers, for unfinished minor loop.*/ + __IO uint32_t DLAST_SGA; /*!< DLASTSGA register, next stcd address used in scatter-gather mode */ + __IO uint16_t CSR; /*!< CSR register, for TCD control status */ + __IO uint16_t BITER; /*!< BITER register, begin minor loop count. */ +} edma_tcd_t; + +/*! @brief Callback for eDMA */ +struct _edma_handle; + +/*! @brief Define Callback function for eDMA. */ +typedef void (*edma_callback)(struct _edma_handle *handle, void *userData, bool transferDone, uint32_t tcds); + +/*! @brief eDMA transfer handle structure */ +typedef struct _edma_handle +{ + edma_callback callback; /*!< Callback function for major count exhausted. */ + void *userData; /*!< Callback function parameter. */ + DMA_Type *base; /*!< eDMA peripheral base address. */ + edma_tcd_t *tcdPool; /*!< Pointer to memory stored TCDs. */ + uint8_t channel; /*!< eDMA channel number. */ + volatile int8_t header; /*!< The first TCD index. */ + volatile int8_t tail; /*!< The last TCD index. */ + volatile int8_t tcdUsed; /*!< The number of used TCD slots. */ + volatile int8_t tcdSize; /*!< The total number of TCD slots in the queue. */ + uint8_t flags; /*!< The status of the current channel. */ +} edma_handle_t; + +/******************************************************************************* + * APIs + ******************************************************************************/ +#if defined(__cplusplus) +extern "C" { +#endif /* __cplusplus */ + +/*! + * @name eDMA initialization and De-initialization + * @{ + */ + +/*! + * @brief Initializes eDMA peripheral. + * + * This function ungates the eDMA clock and configures the eDMA peripheral according + * to the configuration structure. + * + * @param base eDMA peripheral base address. + * @param config Pointer to configuration structure, see "edma_config_t". + * @note This function enable the minor loop map feature. + */ +void EDMA_Init(DMA_Type *base, const edma_config_t *config); + +/*! + * @brief Deinitializes eDMA peripheral. + * + * This function gates the eDMA clock. + * + * @param base eDMA peripheral base address. + */ +void EDMA_Deinit(DMA_Type *base); + +/*! + * @brief Gets the eDMA default configuration structure. + * + * This function sets the configuration structure to a default value. + * The default configuration is set to the following value: + * @code + * config.enableContinuousLinkMode = false; + * config.enableHaltOnError = true; + * config.enableRoundRobinArbitration = false; + * config.enableDebugMode = false; + * @endcode + * + * @param config Pointer to eDMA configuration structure. + */ +void EDMA_GetDefaultConfig(edma_config_t *config); + +/* @} */ +/*! + * @name eDMA Channel Operation + * @{ + */ + +/*! + * @brief Sets all TCD registers to a default value. + * + * This function sets TCD registers for this channel to default value. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + * @note This function must not be called while the channel transfer is on-going, + * or it causes unpredictable results. + * @note This function enables the auto stop request feature. + */ +void EDMA_ResetChannel(DMA_Type *base, uint32_t channel); + +/*! + * @brief Configures the eDMA transfer attribute. + * + * This function configures the transfer attribute, including source address, destination address, + * transfer size, address offset, and so on. It also configures the scatter gather feature if the + * user supplies the TCD address. + * Example: + * @code + * edma_transfer_t config; + * edma_tcd_t tcd; + * config.srcAddr = ..; + * config.destAddr = ..; + * ... + * EDMA_SetTransferConfig(DMA0, channel, &config, &stcd); + * @endcode + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + * @param config Pointer to eDMA transfer configuration structure. + * @param nextTcd Point to TCD structure. It can be NULL if users + * do not want to enable scatter/gather feature. + * @note If nextTcd is not NULL, it means scatter gather feature is enabled + * and DREQ bit is cleared in the previous transfer configuration, which + * is set in eDMA_ResetChannel. + */ +void EDMA_SetTransferConfig(DMA_Type *base, + uint32_t channel, + const edma_transfer_config_t *config, + edma_tcd_t *nextTcd); + +/*! + * @brief Configures the eDMA minor offset feature. + * + * Minor offset means signed-extended value added to source address or destination + * address after each minor loop. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + * @param config Pointer to Minor offset configuration structure. + */ +void EDMA_SetMinorOffsetConfig(DMA_Type *base, uint32_t channel, const edma_minor_offset_config_t *config); + +/*! + * @brief Configures the eDMA channel preemption feature. + * + * This function configures the channel preemption attribute and the priority of the channel. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number + * @param config Pointer to channel preemption configuration structure. + */ +static inline void EDMA_SetChannelPreemptionConfig(DMA_Type *base, + uint32_t channel, + const edma_channel_Preemption_config_t *config) +{ + assert(channel < FSL_FEATURE_EDMA_MODULE_CHANNEL); + assert(config != NULL); + + DMA_DCHPRIn(base, channel) = + (DMA_DCHPRI0_DPA(!config->enablePreemptAbility) | DMA_DCHPRI0_ECP(config->enableChannelPreemption) | + DMA_DCHPRI0_CHPRI(config->channelPriority)); +} + +/*! + * @brief Sets the channel link for the eDMA transfer. + * + * This function configures minor link or major link mode. The minor link means that the channel link is + * triggered every time CITER decreases by 1. The major link means that the channel link is triggered when the CITER is + * exhausted. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + * @param type Channel link type, it can be one of: + * @arg kEDMA_LinkNone + * @arg kEDMA_MinorLink + * @arg kEDMA_MajorLink + * @param linkedChannel The linked channel number. + * @note Users should ensure that DONE flag is cleared before calling this interface, or the configuration is invalid. + */ +void EDMA_SetChannelLink(DMA_Type *base, uint32_t channel, edma_channel_link_type_t type, uint32_t linkedChannel); + +/*! + * @brief Sets the bandwidth for the eDMA transfer. + * + * In general, because the eDMA processes the minor loop, it continuously generates read/write sequences + * until the minor count is exhausted. The bandwidth forces the eDMA to stall after the completion of + * each read/write access to control the bus request bandwidth seen by the crossbar switch. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + * @param bandWidth Bandwidth setting, it can be one of: + * @arg kEDMABandwidthStallNone + * @arg kEDMABandwidthStall4Cycle + * @arg kEDMABandwidthStall8Cycle + */ +void EDMA_SetBandWidth(DMA_Type *base, uint32_t channel, edma_bandwidth_t bandWidth); + +/*! + * @brief Sets the source modulo and destination modulo for eDMA transfer. + * + * This function defines a specific address range specified to be the value after (SADDR + SOFF)/(DADDR + DOFF) + * calculation is performed or the original register value. It provides the ability to implement a circular data + * queue easily. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + * @param srcModulo Source modulo value. + * @param destModulo Destination modulo value. + */ +void EDMA_SetModulo(DMA_Type *base, uint32_t channel, edma_modulo_t srcModulo, edma_modulo_t destModulo); + +#if defined(FSL_FEATURE_EDMA_ASYNCHRO_REQUEST_CHANNEL_COUNT) && FSL_FEATURE_EDMA_ASYNCHRO_REQUEST_CHANNEL_COUNT +/*! + * @brief Enables an async request for the eDMA transfer. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + * @param enable The command for enable(ture) or disable(false). + */ +static inline void EDMA_EnableAsyncRequest(DMA_Type *base, uint32_t channel, bool enable) +{ + assert(channel < FSL_FEATURE_DMAMUX_MODULE_CHANNEL); + + base->EARS = (base->EARS & (~(1U << channel))) | ((uint32_t)enable << channel); +} +#endif /* FSL_FEATURE_EDMA_ASYNCHRO_REQUEST_CHANNEL_COUNT */ + +/*! + * @brief Enables an auto stop request for the eDMA transfer. + * + * If enabling the auto stop request, the eDMA hardware automatically disables the hardware channel request. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + * @param enable The command for enable (true) or disable (false). + */ +static inline void EDMA_EnableAutoStopRequest(DMA_Type *base, uint32_t channel, bool enable) +{ + assert(channel < FSL_FEATURE_DMAMUX_MODULE_CHANNEL); + + base->TCD[channel].CSR = (base->TCD[channel].CSR & (~DMA_CSR_DREQ_MASK)) | DMA_CSR_DREQ(enable); +} + +/*! + * @brief Enables the interrupt source for the eDMA transfer. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + * @param mask The mask of interrupt source to be set. Users need to use + * the defined edma_interrupt_enable_t type. + */ +void EDMA_EnableChannelInterrupts(DMA_Type *base, uint32_t channel, uint32_t mask); + +/*! + * @brief Disables the interrupt source for the eDMA transfer. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + * @param mask The mask of interrupt source to be set. Use + * the defined edma_interrupt_enable_t type. + */ +void EDMA_DisableChannelInterrupts(DMA_Type *base, uint32_t channel, uint32_t mask); + +/* @} */ +/*! + * @name eDMA TCD Operation + * @{ + */ + +/*! + * @brief Sets all fields to default values for the TCD structure. + * + * This function sets all fields for this TCD structure to default value. + * + * @param tcd Pointer to the TCD structure. + * @note This function enables the auto stop request feature. + */ +void EDMA_TcdReset(edma_tcd_t *tcd); + +/*! + * @brief Configures the eDMA TCD transfer attribute. + * + * TCD is a transfer control descriptor. The content of the TCD is the same as hardware TCD registers. + * STCD is used in scatter-gather mode. + * This function configures the TCD transfer attribute, including source address, destination address, + * transfer size, address offset, and so on. It also configures the scatter gather feature if the + * user supplies the next TCD address. + * Example: + * @code + * edma_transfer_t config = { + * ... + * } + * edma_tcd_t tcd __aligned(32); + * edma_tcd_t nextTcd __aligned(32); + * EDMA_TcdSetTransferConfig(&tcd, &config, &nextTcd); + * @endcode + * + * @param tcd Pointer to the TCD structure. + * @param config Pointer to eDMA transfer configuration structure. + * @param nextTcd Pointer to the next TCD structure. It can be NULL if users + * do not want to enable scatter/gather feature. + * @note TCD address should be 32 bytes aligned, or it causes an eDMA error. + * @note If the nextTcd is not NULL, the scatter gather feature is enabled + * and DREQ bit is cleared in the previous transfer configuration, which + * is set in the EDMA_TcdReset. + */ +void EDMA_TcdSetTransferConfig(edma_tcd_t *tcd, const edma_transfer_config_t *config, edma_tcd_t *nextTcd); + +/*! + * @brief Configures the eDMA TCD minor offset feature. + * + * Minor offset is a signed-extended value added to the source address or destination + * address after each minor loop. + * + * @param tcd Point to the TCD structure. + * @param config Pointer to Minor offset configuration structure. + */ +void EDMA_TcdSetMinorOffsetConfig(edma_tcd_t *tcd, const edma_minor_offset_config_t *config); + +/*! + * @brief Sets the channel link for eDMA TCD. + * + * This function configures either a minor link or a major link. The minor link means the channel link is + * triggered every time CITER decreases by 1. The major link means that the channel link is triggered when the CITER is + * exhausted. + * + * @note Users should ensure that DONE flag is cleared before calling this interface, or the configuration is invalid. + * @param tcd Point to the TCD structure. + * @param type Channel link type, it can be one of: + * @arg kEDMA_LinkNone + * @arg kEDMA_MinorLink + * @arg kEDMA_MajorLink + * @param linkedChannel The linked channel number. + */ +void EDMA_TcdSetChannelLink(edma_tcd_t *tcd, edma_channel_link_type_t type, uint32_t linkedChannel); + +/*! + * @brief Sets the bandwidth for the eDMA TCD. + * + * In general, because the eDMA processes the minor loop, it continuously generates read/write sequences + * until the minor count is exhausted. Bandwidth forces the eDMA to stall after the completion of + * each read/write access to control the bus request bandwidth seen by the crossbar switch. + * @param tcd Point to the TCD structure. + * @param bandWidth Bandwidth setting, it can be one of: + * @arg kEDMABandwidthStallNone + * @arg kEDMABandwidthStall4Cycle + * @arg kEDMABandwidthStall8Cycle + */ +static inline void EDMA_TcdSetBandWidth(edma_tcd_t *tcd, edma_bandwidth_t bandWidth) +{ + assert(tcd != NULL); + assert(((uint32_t)tcd & 0x1FU) == 0); + + tcd->CSR = (tcd->CSR & (~DMA_CSR_BWC_MASK)) | DMA_CSR_BWC(bandWidth); +} + +/*! + * @brief Sets the source modulo and destination modulo for eDMA TCD. + * + * This function defines a specific address range specified to be the value after (SADDR + SOFF)/(DADDR + DOFF) + * calculation is performed or the original register value. It provides the ability to implement a circular data + * queue easily. + * + * @param tcd Point to the TCD structure. + * @param srcModulo Source modulo value. + * @param destModulo Destination modulo value. + */ +void EDMA_TcdSetModulo(edma_tcd_t *tcd, edma_modulo_t srcModulo, edma_modulo_t destModulo); + +/*! + * @brief Sets the auto stop request for the eDMA TCD. + * + * If enabling the auto stop request, the eDMA hardware automatically disables the hardware channel request. + * + * @param tcd Point to the TCD structure. + * @param enable The command for enable(ture) or disable(false). + */ +static inline void EDMA_TcdEnableAutoStopRequest(edma_tcd_t *tcd, bool enable) +{ + assert(tcd != NULL); + assert(((uint32_t)tcd & 0x1FU) == 0); + + tcd->CSR = (tcd->CSR & (~DMA_CSR_DREQ_MASK)) | DMA_CSR_DREQ(enable); +} + +/*! + * @brief Enables the interrupt source for the eDMA TCD. + * + * @param tcd Point to the TCD structure. + * @param mask The mask of interrupt source to be set. Users need to use + * the defined edma_interrupt_enable_t type. + */ +void EDMA_TcdEnableInterrupts(edma_tcd_t *tcd, uint32_t mask); + +/*! + * @brief Disables the interrupt source for the eDMA TCD. + * + * @param tcd Point to the TCD structure. + * @param mask The mask of interrupt source to be set. Users need to use + * the defined edma_interrupt_enable_t type. + */ +void EDMA_TcdDisableInterrupts(edma_tcd_t *tcd, uint32_t mask); + +/*! @} */ +/*! + * @name eDMA Channel Transfer Operation + * @{ + */ + +/*! + * @brief Enables the eDMA hardware channel request. + * + * This function enables the hardware channel request. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + */ +static inline void EDMA_EnableChannelRequest(DMA_Type *base, uint32_t channel) +{ + assert(channel < FSL_FEATURE_DMAMUX_MODULE_CHANNEL); + + base->SERQ = DMA_SERQ_SERQ(channel); +} + +/*! + * @brief Disables the eDMA hardware channel request. + * + * This function disables the hardware channel request. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + */ +static inline void EDMA_DisableChannelRequest(DMA_Type *base, uint32_t channel) +{ + assert(channel < FSL_FEATURE_DMAMUX_MODULE_CHANNEL); + + base->CERQ = DMA_CERQ_CERQ(channel); +} + +/*! + * @brief Starts the eDMA transfer by software trigger. + * + * This function starts a minor loop transfer. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + */ +static inline void EDMA_TriggerChannelStart(DMA_Type *base, uint32_t channel) +{ + assert(channel < FSL_FEATURE_DMAMUX_MODULE_CHANNEL); + + base->SSRT = DMA_SSRT_SSRT(channel); +} + +/*! @} */ +/*! + * @name eDMA Channel Status Operation + * @{ + */ + +/*! + * @brief Gets the Remaining bytes from the eDMA current channel TCD. + * + * This function checks the TCD (Task Control Descriptor) status for a specified + * eDMA channel and returns the the number of bytes that have not finished. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + * @return Bytes have not been transferred yet for the current TCD. + * @note This function can only be used to get unfinished bytes of transfer without + * the next TCD, or it might be inaccuracy. + */ +uint32_t EDMA_GetRemainingBytes(DMA_Type *base, uint32_t channel); + +/*! + * @brief Gets the eDMA channel error status flags. + * + * @param base eDMA peripheral base address. + * @return The mask of error status flags. Users need to use the + * _edma_error_status_flags type to decode the return variables. + */ +static inline uint32_t EDMA_GetErrorStatusFlags(DMA_Type *base) +{ + return base->ES; +} + +/*! + * @brief Gets the eDMA channel status flags. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + * @return The mask of channel status flags. Users need to use the + * _edma_channel_status_flags type to decode the return variables. + */ +uint32_t EDMA_GetChannelStatusFlags(DMA_Type *base, uint32_t channel); + +/*! + * @brief Clears the eDMA channel status flags. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + * @param mask The mask of channel status to be cleared. Users need to use + * the defined _edma_channel_status_flags type. + */ +void EDMA_ClearChannelStatusFlags(DMA_Type *base, uint32_t channel, uint32_t mask); + +/*! @} */ +/*! + * @name eDMA Transactional Operation + */ + +/*! + * @brief Creates the eDMA handle. + * + * This function is called if using transaction API for eDMA. This function + * initializes the internal state of eDMA handle. + * + * @param handle eDMA handle pointer. The eDMA handle stores callback function and + * parameters. + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + */ +void EDMA_CreateHandle(edma_handle_t *handle, DMA_Type *base, uint32_t channel); + +/*! + * @brief Installs the TCDs memory pool into eDMA handle. + * + * This function is called after the EDMA_CreateHandle to use scatter/gather feature. + * + * @param handle eDMA handle pointer. + * @param tcdPool Memory pool to store TCDs. It must be 32 bytes aligned. + * @param tcdSize The number of TCD slots. + */ +void EDMA_InstallTCDMemory(edma_handle_t *handle, edma_tcd_t *tcdPool, uint32_t tcdSize); + +/*! + * @brief Installs a callback function for the eDMA transfer. + * + * This callback is called in eDMA IRQ handler. Use the callback to do something after + * the current major loop transfer completes. + * + * @param handle eDMA handle pointer. + * @param callback eDMA callback function pointer. + * @param userData Parameter for callback function. + */ +void EDMA_SetCallback(edma_handle_t *handle, edma_callback callback, void *userData); + +/*! + * @brief Prepares the eDMA transfer structure. + * + * This function prepares the transfer configuration structure according to the user input. + * + * @param config The user configuration structure of type edma_transfer_t. + * @param srcAddr eDMA transfer source address. + * @param srcWidth eDMA transfer source address width(bytes). + * @param destAddr eDMA transfer destination address. + * @param destWidth eDMA transfer destination address width(bytes). + * @param bytesEachRequest eDMA transfer bytes per channel request. + * @param transferBytes eDMA transfer bytes to be transferred. + * @param type eDMA transfer type. + * @note The data address and the data width must be consistent. For example, if the SRC + * is 4 bytes, so the source address must be 4 bytes aligned, or it shall result in + * source address error(SAE). + */ +void EDMA_PrepareTransfer(edma_transfer_config_t *config, + void *srcAddr, + uint32_t srcWidth, + void *destAddr, + uint32_t destWidth, + uint32_t bytesEachRequest, + uint32_t transferBytes, + edma_transfer_type_t type); + +/*! + * @brief Submits the eDMA transfer request. + * + * This function submits the eDMA transfer request according to the transfer configuration structure. + * If the user submits the transfer request repeatedly, this function packs an unprocessed request as + * a TCD and enables scatter/gather feature to process it in the next time. + * + * @param handle eDMA handle pointer. + * @param config Pointer to eDMA transfer configuration structure. + * @retval kStatus_EDMA_Success It means submit transfer request succeed. + * @retval kStatus_EDMA_QueueFull It means TCD queue is full. Submit transfer request is not allowed. + * @retval kStatus_EDMA_Busy It means the given channel is busy, need to submit request later. + */ +status_t EDMA_SubmitTransfer(edma_handle_t *handle, const edma_transfer_config_t *config); + +/*! + * @brief eDMA start transfer. + * + * This function enables the channel request. Users can call this function after submitting the transfer request + * or before submitting the transfer request. + * + * @param handle eDMA handle pointer. + */ +void EDMA_StartTransfer(edma_handle_t *handle); + +/*! + * @brief eDMA stop transfer. + * + * This function disables the channel request to pause the transfer. Users can call EDMA_StartTransfer() + * again to resume the transfer. + * + * @param handle eDMA handle pointer. + */ +void EDMA_StopTransfer(edma_handle_t *handle); + +/*! + * @brief eDMA abort transfer. + * + * This function disables the channel request and clear transfer status bits. + * Users can submit another transfer after calling this API. + * + * @param handle DMA handle pointer. + */ +void EDMA_AbortTransfer(edma_handle_t *handle); + +/*! + * @brief eDMA IRQ handler for current major loop transfer complete. + * + * This function clears the channel major interrupt flag and call + * the callback function if it is not NULL. + * + * @param handle eDMA handle pointer. + */ +void EDMA_HandleIRQ(edma_handle_t *handle); + +/* @} */ + +#if defined(__cplusplus) +} +#endif /* __cplusplus */ + +/* @} */ + +#endif /*_FSL_EDMA_H_*/