Trait Device

pub trait Device: AsRef<Device<Core>> {
    // Provided methods
    unsafe fn dma_set_mask(&self, mask: DmaMask) -> Result { ... }
    unsafe fn dma_set_coherent_mask(&self, mask: DmaMask) -> Result { ... }
    unsafe fn dma_set_mask_and_coherent(&self, mask: DmaMask) -> Result { ... }
}

Trait to be implemented by DMA capable bus devices.

The dma::Device trait should be implemented by bus specific device representations, where the underlying bus is DMA capable, such as pci::Device or platform::Device.

Provided Methods

unsafe fn dma_set_mask(&self, mask: DmaMask) -> Result

Set up the device’s DMA streaming addressing capabilities.

This method is usually called once from probe() as soon as the device capabilities are known.

Safety

This method must not be called concurrently with any DMA allocation or mapping primitives, such as CoherentAllocation::alloc_attrs.

unsafe fn dma_set_coherent_mask(&self, mask: DmaMask) -> Result

Set up the device’s DMA coherent addressing capabilities.

This method is usually called once from probe() as soon as the device capabilities are known.

Safety

This method must not be called concurrently with any DMA allocation or mapping primitives, such as CoherentAllocation::alloc_attrs.

unsafe fn dma_set_mask_and_coherent(&self, mask: DmaMask) -> Result

Set up the device’s DMA addressing capabilities.

This is a combination of Device::dma_set_mask and Device::dma_set_coherent_mask.

This method is usually called once from probe() as soon as the device capabilities are known.

Safety

This method must not be called concurrently with any DMA allocation or mapping primitives, such as CoherentAllocation::alloc_attrs.

Implementors

impl Device for kernel::pci::Device<Core>

impl Device for kernel::platform::Device<Core>