ep_td_struct Struct Reference

Data Fields
u32	next_td_ptr
u32	size_ioc_sts
u32	buff_ptr0
u32	buff_ptr1
u32	buff_ptr2
u32	buff_ptr3
u32	buff_ptr4
dma_addr_t	td_dma
struct ep_td_struct *	next_td_virt
u32	res [7]

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Detailed Description

Endpoint Transfer Descriptor data struct Rem: all the variables of td are LittleEndian Mode must be 32-byte aligned

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Field Documentation

u32 buff_ptr0

Buffer pointer Page 0

u32 buff_ptr1

Buffer pointer Page 1

u32 buff_ptr2

Buffer pointer Page 2

u32 buff_ptr3

Buffer pointer Page 3

u32 buff_ptr4

Buffer pointer Page 4

u32 next_td_ptr

Next TD pointer(31-5), T(0) set indicate invalid

struct ep_td_struct * next_td_virt

virtual address of next td

u32 res

make it an even 16 words

u32 size_ioc_sts

Total bytes (30-16), IOC (15),MultO(11-10), STS (7-0)

dma_addr_t td_dma

dma address of this td