prdt_t Struct Reference

Physical Region Descriptor Table (PRDT) entry. More...

Public Attributes
unsigned int	physical_address
	The first 4 bytes specify the byte address of a physical memory region.
unsigned short	byte_count
	The next two bytes specify the count of the region in bytes (64K byte limit per region).
unsigned short	end_of_table
	Bit 7 of the last byte indicates the end of the table.

Detailed Description

Physical Region Descriptor Table (PRDT) entry.

The physical memory region to be transferred is described by a Physical Region Descriptor (PRD). The data transfer will proceed until all regions described by the PRDs in the table have been transferred. Each Physical Region Descriptor entry is 8 bytes in length. | byte 3 | byte 2 | byte 1 | byte 0 | Dword 0 | Memory Region Physical Base Address [31:1] |0| Dword 1 | EOT | reserved | Byte Count [15:1] |0|

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

• /home/enrico/repository/personal/mentos/mentos/src/drivers/ata.c