參數(shù)資料
型號: LSIFC919
英文描述: LSIFC919 Single Channel Fibre Channel I/O Processor technical manual v2.0 10/01
中文描述: LSIFC919單通道光纖通道I / O處理器技術(shù)手冊2.0 10/01
文件頁數(shù): 34/144頁
文件大?。?/td> 1496K
代理商: LSIFC919
3-4
LSIFC909 Overview
connected to an External Memory Controller. The IOP uses the External
Memory Controller to access local memory. This memory contains the
firmware, as well as the dynamic data structures used by the firmware.
3.3 Message Interface
The LSIFC909 system interface is a high-performance, packetized,
mailbox architecture which leverages the intelligence in the LSIFC909 to
minimize traffic on the PCI bus.
There are two basic constructs in the message interface. The first
construct, the message, is used to communicate between the system
and the LSIFC909. Messages are moved between the system(s) and the
LSIFC909 using the second construct, a transport mechanism.
3.3.1 Messages
The LSIFC909 uses two types of messages to communicate with the
system. The system creates request messages to “request” an action by
the LSIFC909. The LSIFC909 uses reply messages to send status
information back to the system. Request message data structures are up
to 128 bytes in length. The message includes a message header and a
payload. The header includes information to uniquely identify the
message. The payload is specific to the request itself, and is unique for
Block Storage, SCSI, LAN, and Target messages. For more information
regarding the details of the message format, refer to the LSI Logic
LSIFC909 Programming Guide
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