Altera SoCAL  16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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Register : dmagrp_current_host_transmit_descriptor

Description

Register 18 (Current Host Transmit Descriptor Register)

The Current Host Transmit Descriptor register points to the start address of the current Transmit Descriptor read by the DMA.

Register Layout

Bits Access Reset Description
[31:0] R 0x0 ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR

Field : curtdesaptr

Host Transmit Descriptor Address Pointer

Cleared on Reset. Pointer updated by the DMA during operation.

Field Access Macros:

#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR_LSB   0
 
#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR_MSB   31
 
#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR_WIDTH   32
 
#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR_SET_MSK   0xffffffff
 
#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR_CLR_MSK   0x00000000
 
#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR_RESET   0x0
 
#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR_GET(value)   (((value) & 0xffffffff) >> 0)
 
#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR_SET(value)   (((value) << 0) & 0xffffffff)
 

Data Structures

struct  ALT_EMAC_DMA_CUR_HOST_TX_DESC_s
 

Macros

#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_RESET   0x00000000
 
#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_OFST   0x1048
 
#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_ADDR(base)   ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_EMAC_DMA_CUR_HOST_TX_DESC_OFST))
 

Typedefs

typedef struct
ALT_EMAC_DMA_CUR_HOST_TX_DESC_s 
ALT_EMAC_DMA_CUR_HOST_TX_DESC_t
 

Data Structure Documentation

struct ALT_EMAC_DMA_CUR_HOST_TX_DESC_s

WARNING: The C register and register group struct declarations are provided for convenience and illustrative purposes. They should, however, be used with caution as the C language standard provides no guarantees about the alignment or atomicity of device memory accesses. The recommended practice for writing hardware drivers is to use the SoCAL access macros and alt_read_word() and alt_write_word() functions.

The struct declaration for register ALT_EMAC_DMA_CUR_HOST_TX_DESC.

Data Fields
const uint32_t curtdesaptr: 32 ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR

Macro Definitions

#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR_LSB   0

The Least Significant Bit (LSB) position of the ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR register field.

#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR_MSB   31

The Most Significant Bit (MSB) position of the ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR register field.

#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR_WIDTH   32

The width in bits of the ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR register field.

#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR_SET_MSK   0xffffffff

The mask used to set the ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR register field value.

#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR_CLR_MSK   0x00000000

The mask used to clear the ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR register field value.

#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR_RESET   0x0

The reset value of the ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR register field.

#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR_GET (   value)    (((value) & 0xffffffff) >> 0)

Extracts the ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR field value from a register.

#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR_SET (   value)    (((value) << 0) & 0xffffffff)

Produces a ALT_EMAC_DMA_CUR_HOST_TX_DESC_CURTDESAPTR register field value suitable for setting the register.

#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_RESET   0x00000000

The reset value of the ALT_EMAC_DMA_CUR_HOST_TX_DESC register.

#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_OFST   0x1048

The byte offset of the ALT_EMAC_DMA_CUR_HOST_TX_DESC register from the beginning of the component.

#define ALT_EMAC_DMA_CUR_HOST_TX_DESC_ADDR (   base)    ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_EMAC_DMA_CUR_HOST_TX_DESC_OFST))

The address of the ALT_EMAC_DMA_CUR_HOST_TX_DESC register.

Typedef Documentation