Struct Dma 

pub struct Dma {
    pub sp_addr: u32,
    pub ram_addr: u32,
    pub row_len: u32,
    pub rows: u32,
    pub skip: u32,
    pub to_dram: bool,
}

A programmed DMA, latched from the address and length registers.

Returned to the Bus to execute rather than performed here: the RSP does not own RDRAM, and a chip reaching back into its owner is the dependency cycle docs/architecture.md exists to prevent. The PI engine returns a transfer description for the same reason.

Fields

sp_addr: u32

DMEM/IMEM byte offset, with bit 12 selecting IMEM.

ram_addr: u32

RDRAM byte address.

row_len: u32

Bytes per row. Already rounded up to a multiple of 8.

rows: u32

Number of rows.

skip: u32

Bytes skipped in RDRAM between rows. The SP side stays contiguous.

8-byte aligned: the field’s low three bits “are always 0”, so an unaligned value written by guest code cannot drag the RDRAM pointer off alignment mid-transfer.

to_dram: bool

true for DMEM/IMEM to RDRAM (SP_DMA_WRLEN).

Trait Implementations

impl Clone for Dma

fn clone(&self) -> Dma

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Dma

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Dma

fn default() -> Dma

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Dma

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Dma

fn eq(&self, other: &Dma) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Dma

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Dma

impl Eq for Dma

impl StructuralPartialEq for Dma