Altera SoCAL  16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
 All Data Structures Variables Typedefs Groups
Register : dmagrp_current_host_receive_descriptor

Description

Register 19 (Current Host Receive Descriptor Register)

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

Register Layout

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

Field : currdesaptr

Host Receive Descriptor Address Pointer

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

Field Access Macros:

#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR_LSB   0
 
#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR_MSB   31
 
#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR_WIDTH   32
 
#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR_SET_MSK   0xffffffff
 
#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR_CLR_MSK   0x00000000
 
#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR_RESET   0x0
 
#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR_GET(value)   (((value) & 0xffffffff) >> 0)
 
#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR_SET(value)   (((value) << 0) & 0xffffffff)
 

Data Structures

struct  ALT_EMAC_DMA_CUR_HOST_RX_DESC_s
 

Macros

#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_RESET   0x00000000
 
#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_OFST   0x104c
 
#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_ADDR(base)   ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_EMAC_DMA_CUR_HOST_RX_DESC_OFST))
 

Typedefs

typedef struct
ALT_EMAC_DMA_CUR_HOST_RX_DESC_s 
ALT_EMAC_DMA_CUR_HOST_RX_DESC_t
 

Data Structure Documentation

struct ALT_EMAC_DMA_CUR_HOST_RX_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_RX_DESC.

Data Fields
const uint32_t currdesaptr: 32 ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR

Macro Definitions

#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR_LSB   0

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

#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR_MSB   31

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

#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR_WIDTH   32

The width in bits of the ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR register field.

#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR_SET_MSK   0xffffffff

The mask used to set the ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR register field value.

#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR_CLR_MSK   0x00000000

The mask used to clear the ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR register field value.

#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR_RESET   0x0

The reset value of the ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR register field.

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

Extracts the ALT_EMAC_DMA_CUR_HOST_RX_DESC_CURRDESAPTR field value from a register.

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

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

#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_RESET   0x00000000

The reset value of the ALT_EMAC_DMA_CUR_HOST_RX_DESC register.

#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_OFST   0x104c

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

#define ALT_EMAC_DMA_CUR_HOST_RX_DESC_ADDR (   base)    ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_EMAC_DMA_CUR_HOST_RX_DESC_OFST))

The address of the ALT_EMAC_DMA_CUR_HOST_RX_DESC register.

Typedef Documentation