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Diffstat (limited to 'bsps/arm/imxrt/mcux-sdk/drivers/edma/fsl_edma.h')
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1 files changed, 1018 insertions, 0 deletions
diff --git a/bsps/arm/imxrt/mcux-sdk/drivers/edma/fsl_edma.h b/bsps/arm/imxrt/mcux-sdk/drivers/edma/fsl_edma.h new file mode 100644 index 0000000000..3d31f88365 --- /dev/null +++ b/bsps/arm/imxrt/mcux-sdk/drivers/edma/fsl_edma.h @@ -0,0 +1,1018 @@ +/* + * Copyright (c) 2015, Freescale Semiconductor, Inc. + * Copyright 2016-2022 NXP + * All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#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, 4, 3)) /*!< Version 2.4.3. */ +/*@}*/ + +/*! @brief Compute the offset unit from DCHPRI3 */ +#define DMA_DCHPRI_INDEX(channel) (((channel) & ~0x03U) | (3U - ((channel)&0x03U))) + +/*! @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_TransferSize8Bytes = 0x3U, /*!< Source/Destination data transfer size is 8 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 1 K bytes. */ + kEDMA_Modulo2Kbytes, /*!< Circular buffer size is 2 K bytes. */ + kEDMA_Modulo4Kbytes, /*!< Circular buffer size is 4 K bytes. */ + kEDMA_Modulo8Kbytes, /*!< Circular buffer size is 8 K bytes. */ + kEDMA_Modulo16Kbytes, /*!< Circular buffer size is 16 K bytes. */ + kEDMA_Modulo32Kbytes, /*!< Circular buffer size is 32 K bytes. */ + kEDMA_Modulo64Kbytes, /*!< Circular buffer size is 64 K bytes. */ + kEDMA_Modulo128Kbytes, /*!< Circular buffer size is 128 K bytes. */ + kEDMA_Modulo256Kbytes, /*!< Circular buffer size is 256 K bytes. */ + kEDMA_Modulo512Kbytes, /*!< Circular buffer size is 512 K bytes. */ + kEDMA_Modulo1Mbytes, /*!< Circular buffer size is 1 M bytes. */ + kEDMA_Modulo2Mbytes, /*!< Circular buffer size is 2 M bytes. */ + kEDMA_Modulo4Mbytes, /*!< Circular buffer size is 4 M bytes. */ + kEDMA_Modulo8Mbytes, /*!< Circular buffer size is 8 M bytes. */ + kEDMA_Modulo16Mbytes, /*!< Circular buffer size is 16 M bytes. */ + kEDMA_Modulo32Mbytes, /*!< Circular buffer size is 32 M bytes. */ + kEDMA_Modulo64Mbytes, /*!< Circular buffer size is 64 M bytes. */ + kEDMA_Modulo128Mbytes, /*!< Circular buffer size is 128 M bytes. */ + kEDMA_Modulo256Mbytes, /*!< Circular buffer size is 256 M bytes. */ + kEDMA_Modulo512Mbytes, /*!< Circular buffer size is 512 M bytes. */ + kEDMA_Modulo1Gbytes, /*!< Circular buffer size is 1 G bytes. */ + kEDMA_Modulo2Gbytes, /*!< Circular buffer size is 2 G 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 eDMA channel status flags. */ +enum +{ + 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_error_status_flags eDMA channel error status flags. */ +enum +{ + 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 = (int)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 */ + kEDMA_PeripheralToPeripheral, /*!< Transfer from Peripheral to peripheral */ +} edma_transfer_type_t; + +/*! @brief _edma_transfer_status eDMA transfer status */ +enum +{ + 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. + */ +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. */ + uint32_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: a channel can be suspended by other channel with higher priority */ + bool enablePreemptAbility; /*!< If true: a 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 a 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 tcd 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. + * + * This callback function is called in the EDMA interrupt handle. + * In normal mode, run into callback function means the transfer users need is done. + * In scatter gather mode, run into callback function means a transfer control block (tcd) is finished. Not + * all transfer finished, users can get the finished tcd numbers using interface EDMA_GetUnusedTCDNumber. + * + * @param handle EDMA handle pointer, users shall not touch the values inside. + * @param userData The callback user parameter pointer. Users can use this parameter to involve things users need to + * change in EDMA callback function. + * @param transferDone If the current loaded transfer done. In normal mode it means if all transfer done. In scatter + * gather mode, this parameter shows is the current transfer block in EDMA register is done. As the + * load of core is different, it will be different if the new tcd loaded into EDMA registers while + * this callback called. If true, it always means new tcd still not loaded into registers, while + * false means new tcd already loaded into registers. + * @param tcds How many tcds are done from the last callback. This parameter only used in scatter gather mode. It + * tells user how many tcds are finished between the last callback and this. + */ +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. Should point to the next TCD to be loaded into the eDMA engine. */ + volatile int8_t tail; /*!< The last TCD index. Should point to the next TCD to be stored into the memory pool. */ + volatile int8_t tcdUsed; /*!< The number of used TCD slots. Should reflect the number of TCDs can be used/loaded in + the memory. */ + 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 the 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 A pointer to the configuration structure, see "edma_config_t". + * @note This function enables the minor loop map feature. + */ +void EDMA_Init(DMA_Type *base, const edma_config_t *config); + +/*! + * @brief Deinitializes the eDMA peripheral. + * + * This function gates the eDMA clock. + * + * @param base eDMA peripheral base address. + */ +void EDMA_Deinit(DMA_Type *base); + +/*! + * @brief Push content of TCD structure into hardware TCD register. + * + * @param base EDMA peripheral base address. + * @param channel EDMA channel number. + * @param tcd Point to TCD structure. + */ +void EDMA_InstallTCD(DMA_Type *base, uint32_t channel, edma_tcd_t *tcd); + +/*! + * @brief Gets the eDMA default configuration structure. + * + * This function sets the configuration structure to default values. + * The default configuration is set to the following values. + * @code + * config.enableContinuousLinkMode = false; + * config.enableHaltOnError = true; + * config.enableRoundRobinArbitration = false; + * config.enableDebugMode = false; + * @endcode + * + * @param config A pointer to the eDMA configuration structure. + */ +void EDMA_GetDefaultConfig(edma_config_t *config); + +/*! + * @brief Enable/Disable continuous channel link mode. + * + * @note Do not use continuous link mode with a channel linking to itself if there is only one minor loop + * iteration per service request, for example, if the channel's NBYTES value is the same as either + * the source or destination size. The same data transfer profile can be achieved by simply + * increasing the NBYTES value, which provides more efficient, faster processing. + * + * @param base EDMA peripheral base address. + * @param enable true is enable, false is disable. + */ +static inline void EDMA_EnableContinuousChannelLinkMode(DMA_Type *base, bool enable) +{ + if (enable) + { + base->CR |= DMA_CR_CLM_MASK; + } + else + { + base->CR &= ~DMA_CR_CLM_MASK; + } +} + +/*! + * @brief Enable/Disable minor loop mapping. + * + * The TCDn.word2 is redefined to include individual enable fields, an offset field, and the + * NBYTES field. + * + * @param base EDMA peripheral base address. + * @param enable true is enable, false is disable. + */ +static inline void EDMA_EnableMinorLoopMapping(DMA_Type *base, bool enable) +{ + if (enable) + { + base->CR |= DMA_CR_EMLM_MASK; + } + else + { + base->CR &= ~DMA_CR_EMLM_MASK; + } +} + +/* @} */ +/*! + * @name eDMA Channel Operation + * @{ + */ + +/*! + * @brief Sets all TCD registers to default values. + * + * This function sets TCD registers for this channel to default values. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + * @note This function must not be called while the channel transfer is ongoing + * 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 the 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. + * + * The minor offset means that the signed-extended value is added to the source address or destination + * address after each minor loop. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + * @param config A pointer to the 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 A pointer to the channel preemption configuration structure. + */ +void EDMA_SetChannelPreemptionConfig(DMA_Type *base, uint32_t channel, const edma_channel_Preemption_config_t *config); + +/*! + * @brief Sets the channel link for the eDMA transfer. + * + * This function configures either the minor link or the 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 linkType A channel link type, which can be one of the following: + * @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 linkType, uint32_t linkedChannel); + +/*! + * @brief Sets the bandwidth for the eDMA transfer. + * + * 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 A bandwidth setting, which can be one of the following: + * @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 the destination modulo for the 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 A source modulo value. + * @param destModulo A 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 to enable (true) or disable (false). + */ +static inline void EDMA_EnableAsyncRequest(DMA_Type *base, uint32_t channel, bool enable) +{ + assert(channel < (uint32_t)FSL_FEATURE_DMAMUX_MODULE_CHANNEL); + + base->EARS &= ~((uint32_t)1U << channel); + base->EARS |= ((uint32_t)(true == enable ? 1U : 0U) << 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 to enable (true) or disable (false). + */ +static inline void EDMA_EnableAutoStopRequest(DMA_Type *base, uint32_t channel, bool enable) +{ + assert(channel < (uint32_t)FSL_FEATURE_DMAMUX_MODULE_CHANNEL); + + base->TCD[channel].CSR = + (uint16_t)((base->TCD[channel].CSR & (~DMA_CSR_DREQ_MASK)) | DMA_CSR_DREQ((true == enable ? 1U : 0U))); +} + +/*! + * @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 the 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); + +/*! + * @brief Configures the eDMA channel TCD major offset feature. + * + * Adjustment value added to the source address at the completion of the major iteration count + * + * @param base eDMA peripheral base address. + * @param channel edma channel number. + * @param sourceOffset source address offset will be applied to source address after major loop done. + * @param destOffset destination address offset will be applied to source address after major loop done. + */ +void EDMA_SetMajorOffsetConfig(DMA_Type *base, uint32_t channel, int32_t sourceOffset, int32_t destOffset); + +/* @} */ +/*! + * @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. + * + * The TCD is a transfer control descriptor. The content of the TCD is the same as the hardware TCD registers. + * The TCD is used in the 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. + * + * A minor offset is a signed-extended value added to the source address or a destination + * address after each minor loop. + * + * @param tcd A point to the TCD structure. + * @param config A pointer to the minor offset configuration structure. + */ +void EDMA_TcdSetMinorOffsetConfig(edma_tcd_t *tcd, const edma_minor_offset_config_t *config); + +/*! + * @brief Sets the channel link for the 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 linkType 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 linkType, uint32_t linkedChannel); + +/*! + * @brief Sets the bandwidth for the eDMA TCD. + * + * 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 tcd A pointer to the TCD structure. + * @param bandWidth A bandwidth setting, which can be one of the following: + * @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) == 0U); + + tcd->CSR = (uint16_t)((tcd->CSR & (~DMA_CSR_BWC_MASK)) | DMA_CSR_BWC(bandWidth)); +} + +/*! + * @brief Sets the source modulo and the destination modulo for the 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 A pointer to the TCD structure. + * @param srcModulo A source modulo value. + * @param destModulo A 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 A pointer to the TCD structure. + * @param enable The command to enable (true) or disable (false). + */ +static inline void EDMA_TcdEnableAutoStopRequest(edma_tcd_t *tcd, bool enable) +{ + assert(tcd != NULL); + assert(((uint32_t)tcd & 0x1FU) == 0U); + + tcd->CSR = (uint16_t)((tcd->CSR & (~DMA_CSR_DREQ_MASK)) | DMA_CSR_DREQ((true == enable ? 1U : 0U))); +} + +/*! + * @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); + +/*! + * @brief Configures the eDMA TCD major offset feature. + * + * Adjustment value added to the source address at the completion of the major iteration count + * + * @param tcd A point to the TCD structure. + * @param sourceOffset source address offset wiil be applied to source address after major loop done. + * @param destOffset destination address offset will be applied to source address after major loop done. + */ +void EDMA_TcdSetMajorOffsetConfig(edma_tcd_t *tcd, int32_t sourceOffset, int32_t destOffset); + +/*! @} */ +/*! + * @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 < (uint32_t)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 < (uint32_t)FSL_FEATURE_DMAMUX_MODULE_CHANNEL); + + base->CERQ = DMA_CERQ_CERQ(channel); +} + +/*! + * @brief Starts the eDMA transfer by using the 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 < (uint32_t)FSL_FEATURE_DMAMUX_MODULE_CHANNEL); + + base->SSRT = DMA_SSRT_SSRT(channel); +} + +/*! @} */ +/*! + * @name eDMA Channel Status Operation + * @{ + */ + +/*! + * @brief Gets the remaining major loop count from the eDMA current channel TCD. + * + * This function checks the TCD (Task Control Descriptor) status for a specified + * eDMA channel and returns the number of major loop count that has not finished. + * + * @param base eDMA peripheral base address. + * @param channel eDMA channel number. + * @return Major loop count which has not been transferred yet for the current TCD. + * @note 1. This function can only be used to get unfinished major loop count of transfer without + * the next TCD, or it might be inaccuracy. + * 2. The unfinished/remaining transfer bytes cannot be obtained directly from registers while + * the channel is running. + * Because to calculate the remaining bytes, the initial NBYTES configured in DMA_TCDn_NBYTES_MLNO + * register is needed while the eDMA IP does not support getting it while a channel is active. + * In another word, the NBYTES value reading is always the actual (decrementing) NBYTES value the dma_engine + * is working with while a channel is running. + * Consequently, to get the remaining transfer bytes, a software-saved initial value of NBYTES (for example + * copied before enabling the channel) is needed. The formula to calculate it is shown below: + * RemainingBytes = RemainingMajorLoopCount * NBYTES(initially configured) + */ +uint32_t EDMA_GetRemainingMajorLoopCount(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 the transactional API for eDMA. This function + * initializes the internal state of the 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 the eDMA handle. + * + * This function is called after the EDMA_CreateHandle to use scatter/gather feature. This function shall only be used + * while users need to use scatter gather mode. Scatter gather mode enables EDMA to load a new transfer control block + * (tcd) in hardware, and automatically reconfigure that DMA channel for a new transfer. + * Users need to prepare tcd memory and also configure tcds using interface EDMA_SubmitTransfer. + * + * @param handle eDMA handle pointer. + * @param tcdPool A 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 the eDMA IRQ handler. Use the callback to do something after + * the current major loop transfer completes. This function will be called every time one tcd finished transfer. + * + * @param handle eDMA handle pointer. + * @param callback eDMA callback function pointer. + * @param userData A parameter for the callback function. + */ +void EDMA_SetCallback(edma_handle_t *handle, edma_callback callback, void *userData); + +/*! + * @brief Prepares the eDMA transfer structure configurations. + * + * 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 srcOffset source address offset. + * @param destAddr eDMA transfer destination address. + * @param destWidth eDMA transfer destination address width(bytes). + * @param destOffset destination address offset. + * @param bytesEachRequest eDMA transfer bytes per channel request. + * @param transferBytes eDMA transfer bytes to be transferred. + * @note The data address and the data width must be consistent. For example, if the SRC + * is 4 bytes, the source address must be 4 bytes aligned, or it results in + * source address error (SAE). + */ +void EDMA_PrepareTransferConfig(edma_transfer_config_t *config, + void *srcAddr, + uint32_t srcWidth, + int16_t srcOffset, + void *destAddr, + uint32_t destWidth, + int16_t destOffset, + uint32_t bytesEachRequest, + uint32_t transferBytes); + +/*! + * @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 transferType eDMA transfer type. + * @note The data address and the data width must be consistent. For example, if the SRC + * is 4 bytes, the source address must be 4 bytes aligned, or it results 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 transferType); + +/*! + * @brief Submits the eDMA transfer request. + * + * This function submits the eDMA transfer request according to the transfer configuration structure. + * In scatter gather mode, call this function will add a configured tcd to the circular list of tcd pool. + * The tcd pools is setup by call function EDMA_InstallTCDMemory before. + * + * @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 starts 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 stops 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 aborts 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 Get unused TCD slot number. + * + * This function gets current tcd index which is run. If the TCD pool pointer is NULL, it will return 0. + * + * @param handle DMA handle pointer. + * @return The unused tcd slot number. + */ +static inline uint32_t EDMA_GetUnusedTCDNumber(edma_handle_t *handle) +{ + int8_t tmpTcdSize = handle->tcdSize; + int8_t tmpTcdUsed = handle->tcdUsed; + return ((uint32_t)tmpTcdSize - (uint32_t)tmpTcdUsed); +} + +/*! + * @brief Get the next tcd address. + * + * This function gets the next tcd address. If this is last TCD, return 0. + * + * @param handle DMA handle pointer. + * @return The next TCD address. + */ +static inline uint32_t EDMA_GetNextTCDAddress(edma_handle_t *handle) +{ + return (uint32_t)(handle->base->TCD[handle->channel].DLAST_SGA); +} + +/*! + * @brief eDMA IRQ handler for the current major loop transfer completion. + * + * This function clears the channel major interrupt flag and calls + * the callback function if it is not NULL. + * + * Note: + * For the case using TCD queue, when the major iteration count is exhausted, additional operations are performed. + * These include the final address adjustments and reloading of the BITER field into the CITER. + * Assertion of an optional interrupt request also occurs at this time, as does a possible fetch of a new TCD from + * memory using the scatter/gather address pointer included in the descriptor (if scatter/gather is enabled). + * + * For instance, when the time interrupt of TCD[0] happens, the TCD[1] has already been loaded into the eDMA engine. + * As sga and sga_index are calculated based on the DLAST_SGA bitfield lies in the TCD_CSR register, the sga_index + * in this case should be 2 (DLAST_SGA of TCD[1] stores the address of TCD[2]). Thus, the "tcdUsed" updated should be + * (tcdUsed - 2U) which indicates the number of TCDs can be loaded in the memory pool (because TCD[0] and TCD[1] have + * been loaded into the eDMA engine at this point already.). + * + * For the last two continuous ISRs in a scatter/gather process, they both load the last TCD (The last ISR does not + * load a new TCD) from the memory pool to the eDMA engine when major loop completes. + * Therefore, ensure that the header and tcdUsed updated are identical for them. + * tcdUsed are both 0 in this case as no TCD to be loaded. + * + * See the "eDMA basic data flow" in the eDMA Functional description section of the Reference Manual for + * further details. + * + * @param handle eDMA handle pointer. + */ +void EDMA_HandleIRQ(edma_handle_t *handle); + +/* @} */ + +#if defined(__cplusplus) +} +#endif /* __cplusplus */ + +/* @} */ + +#endif /*_FSL_EDMA_H_*/ |