dma_addr_t Union Reference
[Direct Memory Access (DMA) helpers]

A physical/virtual address pair used for DMA. More...

#include <dma_nommu.h>

Data Fields
phys_addr_t	phys
	Physical address.
void *	ptr
	Virtual address.

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Detailed Description

A physical/virtual address pair used for DMA.

Since physical and virtual addresses are always identical on devices without an MMU, they can share the same storage as a union.

Definition at line 60 of file dma_nommu.h.

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Field Documentation

phys_addr_t dma_addr_t::phys

Physical address.

Definition at line 61 of file dma_nommu.h.

Referenced by at90usb_udc_ep0_worker(), at90usb_udc_submit_in_queue(), and at90usb_udc_submit_out_queue().

void* dma_addr_t::ptr

Virtual address.

Definition at line 62 of file dma_nommu.h.

Referenced by at90usb_udc_ep0_worker(), dma_addr_failure(), dma_addr_is_failed(), dma_map_single(), dma_pool_alloc(), dma_pool_free(), udc_fifo_read_data(), and udc_fifo_write_data().

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The documentation for this union was generated from the following file:

• include/generic/dma_nommu.h