- 根目录:
- arch
- arm
- mach-bcmring
- include
- csp
- dmacHw.h
/*****************************************************************************
* Copyright 2004 - 2008 Broadcom Corporation. All rights reserved.
*
* Unless you and Broadcom execute a separate written software license
* agreement governing use of this software, this software is licensed to you
* under the terms of the GNU General Public License version 2, available at
* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
*
* Notwithstanding the above, under no circumstances may you combine this
* software in any way with any other Broadcom software provided under a
* license other than the GPL, without Broadcom's express prior written
* consent.
*****************************************************************************/
/****************************************************************************/
/**
* @file dmacHw.h
*
* @brief API definitions for low level DMA controller driver
*
*/
/****************************************************************************/
#ifndef _DMACHW_H
#define _DMACHW_H
#include <stddef.h>
#include <csp/stdint.h>
#include <mach/csp/dmacHw_reg.h>
/* Define DMA Channel ID using DMA controller number (m) and channel number (c).
System specific channel ID should be defined as follows
For example:
#include <dmacHw.h>
...
#define systemHw_LCD_CHANNEL_ID dmacHw_MAKE_CHANNEL_ID(0,5)
#define systemHw_SWITCH_RX_CHANNEL_ID dmacHw_MAKE_CHANNEL_ID(0,0)
#define systemHw_SWITCH_TX_CHANNEL_ID dmacHw_MAKE_CHANNEL_ID(0,1)
#define systemHw_APM_RX_CHANNEL_ID dmacHw_MAKE_CHANNEL_ID(0,3)
#define systemHw_APM_TX_CHANNEL_ID dmacHw_MAKE_CHANNEL_ID(0,4)
...
#define systemHw_SHARED1_CHANNEL_ID dmacHw_MAKE_CHANNEL_ID(1,4)
#define systemHw_SHARED2_CHANNEL_ID dmacHw_MAKE_CHANNEL_ID(1,5)
#define systemHw_SHARED3_CHANNEL_ID dmacHw_MAKE_CHANNEL_ID(0,6)
...
*/
#define dmacHw_MAKE_CHANNEL_ID(m, c) (m << 8 | c)
typedef enum {
dmacHw_CHANNEL_PRIORITY_0 = dmacHw_REG_CFG_LO_CH_PRIORITY_0, /* Channel priority 0. Lowest priority DMA channel */
dmacHw_CHANNEL_PRIORITY_1 = dmacHw_REG_CFG_LO_CH_PRIORITY_1, /* Channel priority 1 */
dmacHw_CHANNEL_PRIORITY_2 = dmacHw_REG_CFG_LO_CH_PRIORITY_2, /* Channel priority 2 */
dmacHw_CHANNEL_PRIORITY_3 = dmacHw_REG_CFG_LO_CH_PRIORITY_3, /* Channel priority 3 */
dmacHw_CHANNEL_PRIORITY_4 = dmacHw_REG_CFG_LO_CH_PRIORITY_4, /* Channel priority 4 */
dmacHw_CHANNEL_PRIORITY_5 = dmacHw_REG_CFG_LO_CH_PRIORITY_5, /* Channel priority 5 */
dmacHw_CHANNEL_PRIORITY_6 = dmacHw_REG_CFG_LO_CH_PRIORITY_6, /* Channel priority 6 */
dmacHw_CHANNEL_PRIORITY_7 = dmacHw_REG_CFG_LO_CH_PRIORITY_7 /* Channel priority 7. Highest priority DMA channel */
} dmacHw_CHANNEL_PRIORITY_e;
/* Source destination master interface */
typedef enum {
dmacHw_SRC_MASTER_INTERFACE_1 = dmacHw_REG_CTL_SMS_1, /* Source DMA master interface 1 */
dmacHw_SRC_MASTER_INTERFACE_2 = dmacHw_REG_CTL_SMS_2, /* Source DMA master interface 2 */
dmacHw_DST_MASTER_INTERFACE_1 = dmacHw_REG_CTL_DMS_1, /* Destination DMA master interface 1 */
dmacHw_DST_MASTER_INTERFACE_2 = dmacHw_REG_CTL_DMS_2 /* Destination DMA master interface 2 */
} dmacHw_MASTER_INTERFACE_e;
typedef enum {
dmacHw_SRC_TRANSACTION_WIDTH_8 = dmacHw_REG_CTL_SRC_TR_WIDTH_8, /* Source 8 bit (1 byte) per transaction */
dmacHw_SRC_TRANSACTION_WIDTH_16 = dmacHw_REG_CTL_SRC_TR_WIDTH_16, /* Source 16 bit (2 byte) per transaction */
dmacHw_SRC_TRANSACTION_WIDTH_32 = dmacHw_REG_CTL_SRC_TR_WIDTH_32, /* Source 32 bit (4 byte) per transaction */
dmacHw_SRC_TRANSACTION_WIDTH_64 = dmacHw_REG_CTL_SRC_TR_WIDTH_64, /* Source 64 bit (8 byte) per transaction */
dmacHw_DST_TRANSACTION_WIDTH_8 = dmacHw_REG_CTL_DST_TR_WIDTH_8, /* Destination 8 bit (1 byte) per transaction */
dmacHw_DST_TRANSACTION_WIDTH_16 = dmacHw_REG_CTL_DST_TR_WIDTH_16, /* Destination 16 bit (2 byte) per transaction */
dmacHw_DST_TRANSACTION_WIDTH_32 = dmacHw_REG_CTL_DST_TR_WIDTH_32, /* Destination 32 bit (4 byte) per transaction */
dmacHw_DST_TRANSACTION_WIDTH_64 = dmacHw_REG_CTL_DST_TR_WIDTH_64 /* Destination 64 bit (8 byte) per transaction */
} dmacHw_TRANSACTION_WIDTH_e;
typedef enum {
dmacHw_SRC_BURST_WIDTH_0 = dmacHw_REG_CTL_SRC_MSIZE_0, /* Source No burst */
dmacHw_SRC_BURST_WIDTH_4 = dmacHw_REG_CTL_SRC_MSIZE_4, /* Source 4 X dmacHw_TRANSACTION_WIDTH_xxx bytes per burst */
dmacHw_SRC_BURST_WIDTH_8 = dmacHw_REG_CTL_SRC_MSIZE_8, /* Source 8 X dmacHw_TRANSACTION_WIDTH_xxx bytes per burst */
dmacHw_SRC_BURST_WIDTH_16 = dmacHw_REG_CTL_SRC_MSIZE_16, /* Source 16 X dmacHw_TRANSACTION_WIDTH_xxx bytes per burst */
dmacHw_DST_BURST_WIDTH_0 = dmacHw_REG_CTL_DST_MSIZE_0, /* Destination No burst */
dmacHw_DST_BURST_WIDTH_4 = dmacHw_REG_CTL_DST_MSIZE_4, /* Destination 4 X dmacHw_TRANSACTION_WIDTH_xxx bytes per burst */
dmacHw_DST_BURST_WIDTH_8 = dmacHw_REG_CTL_DST_MSIZE_8, /* Destination 8 X dmacHw_TRANSACTION_WIDTH_xxx bytes per burst */
dmacHw_DST_BURST_WIDTH_16 = dmacHw_REG_CTL_DST_MSIZE_16 /* Destination 16 X dmacHw_TRANSACTION_WIDTH_xxx bytes per burst */
} dmacHw_BURST_WIDTH_e;
typedef enum {
dmacHw_TRANSFER_TYPE_MEM_TO_MEM = dmacHw_REG_CTL_TTFC_MM_DMAC, /* Memory to memory transfer */
dmacHw_TRANSFER_TYPE_PERIPHERAL_TO_MEM = dmacHw_REG_CTL_TTFC_PM_DMAC, /* Peripheral to memory transfer */
dmacHw_TRANSFER_TYPE_MEM_TO_PERIPHERAL = dmacHw_REG_CTL_TTFC_MP_DMAC, /* Memory to peripheral transfer */
dmacHw_TRANSFER_TYPE_PERIPHERAL_TO_PERIPHERAL = dmacHw_REG_CTL_TTFC_PP_DMAC /* Peripheral to peripheral transfer */
} dmacHw_TRANSFER_TYPE_e;
typedef enum {
dmacHw_TRANSFER_MODE_PERREQUEST, /* Block transfer per DMA request */
dmacHw_TRANSFER_MODE_CONTINUOUS, /* Continuous transfer of streaming data */
dmacHw_TRANSFER_MODE_PERIODIC /* Periodic transfer of streaming data */
} dmacHw_TRANSFER_MODE_e;
typedef enum {
dmacHw_SRC_ADDRESS_UPDATE_MODE_INC = dmacHw_REG_CTL_SINC_INC, /* Increment source address after every transaction */
dmacHw_SRC_ADDRESS_UPDATE_MODE_DEC = dmacHw_REG_CTL_SINC_DEC, /* Decrement source address after every transaction */
dmacHw_DST_ADDRESS_UPDATE_MODE_INC = dmacHw_REG_CTL_DINC_INC, /* Increment destination address after every transaction */
dmacHw_DST_ADDRESS_UPDATE_MODE_DEC = dmacHw_REG_CTL_DINC_DEC, /* Decrement destination address after every transaction */
dmacHw_SRC_ADDRESS_UPDATE_MODE_NC = dmacHw_REG_CTL_SINC_NC, /* No change in source address after every transaction */
dmacHw_DST_ADDRESS_UPDATE_MODE_NC = dmacHw_REG_CTL_DINC_NC /* No change in destination address after every transaction */
} dmacHw_ADDRESS_UPDATE_MODE_e;
typedef enum {
dmacHw_FLOW_CONTROL_DMA, /* DMA working as flow controller (default) */
dmacHw_FLOW_CONTROL_PERIPHERAL /* Peripheral working as flow controller */
} dmacHw_FLOW_CONTROL_e;
typedef enum {
dmacHw_TRANSFER_STATUS_BUSY, /* DMA Transfer ongoing */
dmacHw_TRANSFER_STATUS_DONE, /* DMA Transfer completed */
dmacHw_TRANSFER_STATUS_ERROR /* DMA Transfer error */
} dmacHw_TRANSFER_STATUS_e;
typedef enum {
dmacHw_INTERRUPT_DISABLE, /* Interrupt disable */
dmacHw_INTERRUPT_ENABLE /* Interrupt enable */
} dmacHw_INTERRUPT_e;
typedef enum {
dmacHw_INTERRUPT_STATUS_NONE = 0x0, /* No DMA interrupt */
dmacHw_INTERRUPT_STATUS_TRANS = 0x1, /* End of DMA transfer interrupt */
dmacHw_INTERRUPT_STATUS_BLOCK = 0x2, /* End of block transfer interrupt */
dmacHw_INTERRUPT_STATUS_ERROR = 0x4 /* Error interrupt */
} dmacHw_INTERRUPT_STATUS_e;
typedef enum {
dmacHw_CONTROLLER_ATTRIB_CHANNEL_NUM, /* Number of DMA channel */
dmacHw_CONTROLLER_ATTRIB_CHANNEL_MAX_BLOCK_SIZE, /* Maximum channel burst size */
dmacHw_CONTROLLER_ATTRIB_MASTER_INTF_NUM, /* Number of DMA master interface */
dmacHw_CONTROLLER_ATTRIB_CHANNEL_BUS_WIDTH, /* Channel Data bus width */
dmacHw_CONTROLLER_ATTRIB_CHANNEL_FIFO_SIZE /* Channel FIFO size */
} dmacHw_CONTROLLER_ATTRIB_e;
typedef unsigned long dmacHw_HANDLE_t; /* DMA channel handle */
typedef uint32_t dmacHw_ID_t; /* DMA channel Id. Must be created using
"dmacHw_MAKE_CHANNEL_ID" macro
*/
/* DMA channel configuration parameters */
typedef struct {
uint32_t srcPeripheralPort; /* Source peripheral port */
uint32_t dstPeripheralPort; /* Destination peripheral port */
uint32_t srcStatusRegisterAddress; /* Source status register address */
uint32_t dstStatusRegisterAddress; /* Destination status register address of type */
uint32_t srcGatherWidth; /* Number of bytes gathered before successive gather opearation */
uint32_t srcGatherJump; /* Number of bytes jumpped before successive gather opearation */
uint32_t dstScatterWidth; /* Number of bytes sacattered before successive scatter opearation */
uint32_t dstScatterJump; /* Number of bytes jumpped before successive scatter opearation */
uint32_t maxDataPerBlock; /* Maximum number of bytes to be transferred per block/descrptor.
0 = Maximum possible.
*/
dmacHw_ADDRESS_UPDATE_MODE_e srcUpdate; /* Source address update mode */
dmacHw_ADDRESS_UPDATE_MODE_e dstUpdate; /* Destination address update mode */
dmacHw_TRANSFER_TYPE_e transferType; /* DMA transfer type */
dmacHw_TRANSFER_MODE_e transferMode; /* DMA transfer mode */
dmacHw_MASTER_INTERFACE_e srcMasterInterface; /* DMA source interface */
dmacHw_MASTER_INTERFACE_e dstMasterInterface; /* DMA destination interface */
dmacHw_TRANSACTION_WIDTH_e srcMaxTransactionWidth; /* Source transaction width */
dmacHw_TRANSACTION_WIDTH_e dstMaxTransactionWidth; /* Destination transaction width */
dmacHw_BURST_WIDTH_e srcMaxBurstWidth; /* Source burst width */
dmacHw_BURST_WIDTH_e dstMaxBurstWidth; /* Destination burst width */
dmacHw_INTERRUPT_e blockTransferInterrupt; /* Block trsnafer interrupt */
dmacHw_INTERRUPT_e completeTransferInterrupt; /* Complete DMA trsnafer interrupt */
dmacHw_INTERRUPT_e errorInterrupt; /* Error interrupt */
dmacHw_CHANNEL_PRIORITY_e channelPriority; /* Channel priority */
dmacHw_FLOW_CONTROL_e flowControler; /* Data flow controller */
} dmacHw_CONFIG_t;
/****************************************************************************/
/**
* @brief Initializes DMA
*
* This function initializes DMA CSP driver
*
* @note
* Must be called before using any DMA channel
*/
/****************************************************************************/
void dmacHw_initDma(void);
/****************************************************************************/
/**
* @brief Exit function for DMA
*
* This function isolates DMA from the system
*
*/
/****************************************************************************/
void dmacHw_exitDma(void);
/****************************************************************************/
/**
* @brief Gets a handle to a DMA channel
*
* This function returns a handle, representing a control block of a particular DMA channel
*
* @return -1 - On Failure
* handle - On Success, representing a channel control block
*
* @note
* None Channel ID must be created using "dmacHw_MAKE_CHANNEL_ID" macro
*/
/****************************************************************************/
dmacHw_HANDLE_t dmacHw_getChannelHandle(dmacHw_ID_t channelId /* [ IN ] DMA Channel Id */
);
/****************************************************************************/
/**
* @brief Initializes a DMA channel for use
*
* This function initializes and resets a DMA channel for use
*
* @return -1 - On Failure
* 0 - On Success
*
* @note
* None
*/
/****************************************************************************/
int dmacHw_initChannel(dmacHw_HANDLE_t handle /* [ IN ] DMA Channel handle */
);
/****************************************************************************/
/**
* @brief Estimates number of descriptor needed to perform certain DMA transfer
*
*
* @return On failure : -1
* On success : Number of descriptor count
*
*
*/
/****************************************************************************/
int dmacHw_calculateDescriptorCount(dmacHw_CONFIG_t *pConfig, /* [ IN ] Configuration settings */
void *pSrcAddr, /* [ IN ] Source (Peripheral/Memory) address */
void *pDstAddr, /* [ IN ] Destination (Peripheral/Memory) address */
size_t dataLen /* [ IN ] Data length in bytes */
);
/****************************************************************************/
/**
* @brief Initializes descriptor ring
*
* This function will initializes the descriptor ring of a DMA channel
*
*
* @return -1 - On failure
* 0 - On success
* @note
* - "len" parameter should be obtained from "dmacHw_descriptorLen"
* - Descriptor buffer MUST be 32 bit aligned and uncached as it
* is accessed by ARM and DMA
*/
/****************************************************************************/
int dmacHw_initDescriptor(void *pDescriptorVirt, /* [ IN ] Virtual address of uncahced buffer allocated to form descriptor ring */
uint32_t descriptorPhyAddr, /* [ IN ] Physical address of pDescriptorVirt (descriptor buffer) */
uint32_t len, /* [ IN ] Size of the pBuf */
uint32_t num /* [ IN ] Number of descriptor in the ring */
);
/****************************************************************************/
/**
* @brief Finds amount of memory required to form a descriptor ring
*
*
* @return Number of bytes required to form a descriptor ring
*
*
* @note
* None
*/
/****************************************************************************/
uint32_t dmacHw_descriptorLen(uint32_t descCnt /* [ IN ] Number of descriptor in the ring */
);
/****************************************************************************/
/**
* @brief Configure DMA channel
*
* @return 0 : On success
* -1 : On failure
*/
/****************************************************************************/
int dmacHw_configChannel(dmacHw_HANDLE_t handle, /* [ IN ] DMA Channel handle */
dmacHw_CONFIG_t *pConfig /* [ IN ] Configuration settings */
);
/****************************************************************************/
/**
* @brief Set descriptors for known data length
*
* When DMA has to work as a flow controller, this function prepares the
* descriptor chain to transfer data
*
* from:
* - Memory to memory
* - Peripheral to memory
* - Memory to Peripheral
* - Peripheral to Peripheral
*
* @return -1 - On failure
* 0 - On success
*
*/
/****************************************************************************/
int dmacHw_setDataDescriptor(dmacHw_CONFIG_t *pConfig, /* [ IN ] Configuration settings */
void *pDescriptor, /* [ IN ] Descriptor buffer */
void *pSrcAddr, /* [ IN ] Source (Peripheral/Memory) address */
void *pDstAddr, /* [ IN ] Destination (Peripheral/Memory) address */
size_t dataLen /* [ IN ] Length in bytes */
);
/****************************************************************************/
/**
* @brief Indicates whether DMA transfer is in progress or completed
*
* @return DMA transfer status
* dmacHw_TRANSFER_STATUS_BUSY: DMA Transfer ongoing
* dmacHw_TRANSFER_STATUS_DONE: DMA Transfer completed
* dmacHw_TRANSFER_STATUS_ERROR: DMA Transfer error
*
*/
/****************************************************************************/
dmacHw_TRANSFER_STATUS_e dmacHw_transferCompleted(dmacHw_HANDLE_t handle /* [ IN ] DMA Channel handle */
);
/****************************************************************************/
/**
* @brief Set descriptor carrying control information
*
* This function will be used to send specific control information to the device
* using the DMA channel
*
*
* @return -1 - On failure
* 0 - On success
*
* @note
* None
*/
/****************************************************************************/
int dmacHw_setControlDescriptor(dmacHw_CONFIG_t *pConfig, /* [ IN ] Configuration settings */
void *pDescriptor, /* [ IN ] Descriptor buffer */
uint32_t ctlAddress, /* [ IN ] Address of the device control register */
uint32_t control /* [ IN ] Device control information */
);
/****************************************************************************/
/**
* @brief Read data DMA transferred to memory
*
* This function will read data that has been DMAed to memory while transferring from:
* - Memory to memory
* - Peripheral to memory
*
* @return 0 - No more data is available to read
* 1 - More data might be available to read
*
*/
/****************************************************************************/
int dmacHw_readTransferredData(dmacHw_HANDLE_t handle, /* [ IN ] DMA Channel handle */
dmacHw_CONFIG_t *pConfig, /* [ IN ] Configuration settings */
void *pDescriptor, /* [ IN ] Descriptor buffer */
void **ppBbuf, /* [ OUT ] Data received */
size_t *pLlen /* [ OUT ] Length of the data received */
);
/****************************************************************************/
/**
* @brief Prepares descriptor ring, when source peripheral working as a flow controller
*
* This function will form the descriptor ring by allocating buffers, when source peripheral
* has to work as a flow controller to transfer data from:
* - Peripheral to memory.
*
* @return -1 - On failure
* 0 - On success
*
*
* @note
* None
*/
/****************************************************************************/
int dmacHw_setVariableDataDescriptor(dmacHw_HANDLE_t handle, /* [ IN ] DMA Channel handle */
dmacHw_CONFIG_t *pConfig, /* [ IN ] Configuration settings */
void *pDescriptor, /* [ IN ] Descriptor buffer */
uint32_t srcAddr, /* [ IN ] Source peripheral address */
void *(*fpAlloc) (int len), /* [ IN ] Function pointer that provides destination memory */
int len, /* [ IN ] Number of bytes "fpAlloc" will allocate for destination */
int num /* [ IN ] Number of descriptor to set */
);
/****************************************************************************/
/**
* @brief Program channel register to initiate transfer
*
* @return void
*
*
* @note
* - Descriptor buffer MUST ALWAYS be flushed before calling this function
* - This function should also be called from ISR to program the channel with
* pending descriptors
*/
/****************************************************************************/
void dmacHw_initiateTransfer(dmacHw_HANDLE_t handle, /* [ IN ] DMA Channel handle */
dmacHw_CONFIG_t *pConfig, /* [ IN ] Configuration settings */
void *pDescriptor /* [ IN ] Descriptor buffer */
);
/****************************************************************************/
/**
* @brief Resets descriptor control information
*
* @return void
*/
/****************************************************************************/
void dmacHw_resetDescriptorControl(void *pDescriptor /* [ IN ] Descriptor buffer */
);
/****************************************************************************/
/**
* @brief Program channel register to stop transfer
*
* Ensures the channel is not doing any transfer after calling this function
*
* @return void
*
*/
/****************************************************************************/
void dmacHw_stopTransfer(dmacHw_HANDLE_t handle /* [ IN ] DMA Channel handle */
);
/****************************************************************************/
/**
* @brief Check the existence of pending descriptor
*
* This function confirmes if there is any pending descriptor in the chain
* to program the channel
*
* @return 1 : Channel need to be programmed with pending descriptor
* 0 : No more pending descriptor to programe the channel
*
* @note
* - This function should be called from ISR in case there are pending
* descriptor to program the channel.
*
* Example:
*
* dmac_isr ()
* {
* ...
* if (dmacHw_descriptorPending (handle))
* {
* dmacHw_initiateTransfer (handle);
* }
* }
*
*/
/****************************************************************************/
uint32_t dmacHw_descriptorPending(dmacHw_HANDLE_t handle, /* [ IN ] DMA Channel handle */
void *pDescriptor /* [ IN ] Descriptor buffer */
);
/****************************************************************************/
/**
* @brief Deallocates source or destination memory, allocated
*
* This function can be called to deallocate data memory that was DMAed successfully
*
* @return -1 - On failure
* 0 - On success
*
* @note
* This function will be called ONLY, when source OR destination address is pointing
* to dynamic memory
*/
/****************************************************************************/
int dmacHw_freeMem(dmacHw_CONFIG_t *pConfig, /* [ IN ] Configuration settings */
void *pDescriptor, /* [ IN ] Descriptor buffer */
void (*fpFree) (void *) /* [ IN ] Function pointer to free data memory */
);
/****************************************************************************/
/**
* @brief Clears the interrupt
*
* This function clears the DMA channel specific interrupt
*
* @return N/A
*
* @note
* Must be called under the context of ISR
*/
/****************************************************************************/
void dmacHw_clearInterrupt(dmacHw_HANDLE_t handle /* [ IN ] DMA Channel handle */
);
/****************************************************************************/
/**
* @brief Returns the cause of channel specific DMA interrupt
*
* This function returns the cause of interrupt
*
* @return Interrupt status, each bit representing a specific type of interrupt
* of type dmacHw_INTERRUPT_STATUS_e
* @note
* This function should be called under the context of ISR
*/
/****************************************************************************/
dmacHw_INTERRUPT_STATUS_e dmacHw_getInterruptStatus(dmacHw_HANDLE_t handle /* [ IN ] DMA Channel handle */
);
/****************************************************************************/
/**
* @brief Indentifies a DMA channel causing interrupt
*
* This functions returns a channel causing interrupt of type dmacHw_INTERRUPT_STATUS_e
*
* @return NULL : No channel causing DMA interrupt
* ! NULL : Handle to a channel causing DMA interrupt
* @note
* dmacHw_clearInterrupt() must be called with a valid handle after calling this function
*/
/****************************************************************************/
dmacHw_HANDLE_t dmacHw_getInterruptSource(void);
/****************************************************************************/
/**
* @brief Sets channel specific user data
*
* This function associates user data to a specific DMA channel
*
*/
/****************************************************************************/
void dmacHw_setChannelUserData(dmacHw_HANDLE_t handle, /* [ IN ] DMA Channel handle */
void *userData /* [ IN ] User data */
);
/****************************************************************************/
/**
* @brief Gets channel specific user data
*
* This function returns user data specific to a DMA channel
*
* @return user data
*/
/****************************************************************************/
void *dmacHw_getChannelUserData(dmacHw_HANDLE_t handle /* [ IN ] DMA Channel handle */
);
/****************************************************************************/
/**
* @brief Displays channel specific registers and other control parameters
*
*
* @return void
*
* @note
* None
*/
/****************************************************************************/
void dmacHw_printDebugInfo(dmacHw_HANDLE_t handle, /* [ IN ] DMA Channel handle */
void *pDescriptor, /* [ IN ] Descriptor buffer */
int (*fpPrint) (const char *, ...) /* [ IN ] Print callback function */
);
/****************************************************************************/
/**
* @brief Provides DMA controller attributes
*
*
* @return DMA controller attributes
*
* @note
* None
*/
/****************************************************************************/
uint32_t dmacHw_getDmaControllerAttribute(dmacHw_HANDLE_t handle, /* [ IN ] DMA Channel handle */
dmacHw_CONTROLLER_ATTRIB_e attr /* [ IN ] DMA Controller attribute of type dmacHw_CONTROLLER_ATTRIB_e */
);
#endif /* _DMACHW_H */