Altera SoCAL  16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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Register : DMA Software Acknowledge - dmasa

Description

DMA Operation Control

Register Layout

Bits Access Reset Description
[0] W 0x0 DMA Software Acknowledge Bits
[31:1] ??? 0x0 UNDEFINED

Field : DMA Software Acknowledge Bits - dmasa

This register is used to perform DMA software acknowledge if a transfer needs to be terminated due to an error condition. For example, if the DMA disables the channel, then the uart should clear its request. This will cause the Tx request, Tx single, Rx request and Rx single signals to de-assert. Note that this bit is 'self-clearing' and it is not necessary to clear this bit.

Field Access Macros:

#define ALT_UART_DMASA_DMASA_LSB   0
 
#define ALT_UART_DMASA_DMASA_MSB   0
 
#define ALT_UART_DMASA_DMASA_WIDTH   1
 
#define ALT_UART_DMASA_DMASA_SET_MSK   0x00000001
 
#define ALT_UART_DMASA_DMASA_CLR_MSK   0xfffffffe
 
#define ALT_UART_DMASA_DMASA_RESET   0x0
 
#define ALT_UART_DMASA_DMASA_GET(value)   (((value) & 0x00000001) >> 0)
 
#define ALT_UART_DMASA_DMASA_SET(value)   (((value) << 0) & 0x00000001)
 

Data Structures

struct  ALT_UART_DMASA_s
 

Macros

#define ALT_UART_DMASA_OFST   0xa8
 
#define ALT_UART_DMASA_ADDR(base)   ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_UART_DMASA_OFST))
 

Typedefs

typedef struct ALT_UART_DMASA_s ALT_UART_DMASA_t
 

Data Structure Documentation

struct ALT_UART_DMASA_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_UART_DMASA.

Data Fields
uint32_t dmasa: 1 DMA Software Acknowledge Bits
uint32_t __pad0__: 31 UNDEFINED

Macro Definitions

#define ALT_UART_DMASA_DMASA_LSB   0

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

#define ALT_UART_DMASA_DMASA_MSB   0

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

#define ALT_UART_DMASA_DMASA_WIDTH   1

The width in bits of the ALT_UART_DMASA_DMASA register field.

#define ALT_UART_DMASA_DMASA_SET_MSK   0x00000001

The mask used to set the ALT_UART_DMASA_DMASA register field value.

#define ALT_UART_DMASA_DMASA_CLR_MSK   0xfffffffe

The mask used to clear the ALT_UART_DMASA_DMASA register field value.

#define ALT_UART_DMASA_DMASA_RESET   0x0

The reset value of the ALT_UART_DMASA_DMASA register field.

#define ALT_UART_DMASA_DMASA_GET (   value)    (((value) & 0x00000001) >> 0)

Extracts the ALT_UART_DMASA_DMASA field value from a register.

#define ALT_UART_DMASA_DMASA_SET (   value)    (((value) << 0) & 0x00000001)

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

#define ALT_UART_DMASA_OFST   0xa8

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

#define ALT_UART_DMASA_ADDR (   base)    ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_UART_DMASA_OFST))

The address of the ALT_UART_DMASA register.

Typedef Documentation

The typedef declaration for register ALT_UART_DMASA.