HP A2Y15AV Manuel D’Utilisation

186

Datasheet, Volume 2

6:4

RW

000b

Uncore

Multiple Message Enable (MME)
System software programs this field to indicate the actual 

number of messages allocated to this device. This number will be 

equal to or less than the number actually requested.
The encoding is the same as for the MMC field below. 

3:1

RO

000b

Uncore

Multiple Message Capable (MMC)
System software reads this field to determine the number of 

messages being requested by this device.
000 = 1
All of the following are reserved in this implementation: 
001 = 2
010 = 4
011 = 8
100 = 16
101 = 32
110 = Reserved 
111 = Reserved

0

RW

0b

Uncore

MSI Enable (MSIEN)
This bit controls the ability of this device to generate MSIs. 
0 = MSI will not be generated. 
1 = MSI will be generated when we receive PME messages. INTA 

will not be generated and INTA Status (PCISTS1[3]) will not 

be set. 

31:2

RW

00000000h

Uncore

Message Address (MA)
Used by system software to assign an MSI address to the device. 

The device handles an MSI by writing the padded contents of the 

MD register to this address.

1:0

RO

00b

Uncore

Force DWord Align (FDWA)
Hardwired to 0 so that addresses assigned by system software 

are always aligned on a DWord address boundary.