Changes between Version 8 and Version 9 of Component/Vci Multi Ahci

Timestamp:

Mar 29, 2015, 1:46:36 PM (9 years ago)

Author:

alain

Comment:

--

Component/Vci Multi Ahci

@@ -37 +37 @@
 == 3) Command Table ==
 
-There is one Command Table for each Command descriptor. For a given command, there is one single LBA (Logic Bloc Address) on the block device, coded on 48 bits, but the source (or destination) memory buffer can be split in a variable number of contiguous buffers. Therefore, the Command Table contains two parts: a fixed size Header, defining the LBA, and an array of buffer descriptors containing up to 248 buffer descriptors. A Command Table occupies 4 Kbytes, and is defined by the following C structures: 
+There is one Command Table for each Command descriptor. For a given command, there is one single LBA (Logic Bloc Address) on the block device, coded on 48 bits, but the source (or destination) memory buffer can be split in a variable number of contiguous buffers. Therefore, the Command Table contains two parts: a fixed size Header, defining the LBA, and an array of buffer descriptors containing up to 248 buffer descriptors. A Command Table occupies 4 Kbytes, and must be aligned on a 4 Kbytes boundary. It is defined by the following C structures: 
 {{{
 typedef struct hba_cmd_table_s  // size = 4 Kbytes