Datasheet

Datasheet, Volume 2 79
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Processor Integrated I/O (IIO) Configuration Registers
9:8 RW 3h
Power Indicator Control
If a Power Indicator is implemented, writes to this field will set the Power Indicator
to the written state. Reads of this field must reflect the value from the latest write,
even if the corresponding hot-plug command is not executed yet at the VPP,
unless software issues a write without waiting for the previous command to
complete in which case the read value is undefined.
00 = Reserved.
01 = On
10 = Blink (IIO drives 1 Hz square wave for Chassis mounted LEDs)
11 = Off
IIO does not generated the Power_Indicator_On/Off/Blink messages on PCI
Express when this field is written to by software.
7:6 RW 3h
Attention Indicator Control
If an Attention Indicator is implemented, writes to this field will set the Attention
Indicator to the written state. Reads of this field reflect the value from the latest
write, even if the corresponding hot-plug command is not executed yet at the VPP,
unless software issues a write without waiting for the previous command to
complete in which case the read value is undefined.
00 = Reserved.
01 = On
10 = Blink (Processor drives 1 Hz square wave)
11 = Off
IIO does not generated the Attention_Indicator_On/Off/Blink messages on PCI
Express when this field is written to by software.
5RW0b
Hot-plug Interrupt Enable
When set to 1b, this bit enables generation of Hot-Plug interrupt.
0 = Disables interrupt generation on Hot-plug events
1 = Enables interrupt generation on Hot-plug events
4RW0b
Command Completed Interrupt Enable
This field enables software notification (Interrupt - MSI/INTx or WAKE) when a
command is completed by the hot-plug controller connected to the PCI Express
port
0 = Disables hot-plug interrupts on a command completion by a hot-plug
Controller
1 = Enables hot-plug interrupts on a command completion by a hot-plug
Controller
3RW0h
Presence Detect Changed Enable
This bit enables the generation of hot-plug interrupts or wake messages using a
presence detect changed event.
0 = Disables generation of hot-plug interrupts or wake messages when a
presence detect changed event happens.
1 = Enables generation of hot-plug interrupts or wake messages when a presence
detect changed event happens.
2RW0h
MRL Sensor Changed Enable
This bit enables the generation of hot-plug interrupts or wake messages using a
MRL Sensor changed event.
0 = Disables generation of hot-plug interrupts or wake messages when an MRL
Sensor changed event happens.
1 = Enables generation of hot-plug interrupts or wake messages when an MRL
Sensor changed event happens.
SLTCON
Bus: 0 Device: 0 Function: 0 Offset: A8h (PCIe* MODE)
Bus: 0 Device: 1 Function: 0–1 Offset: A8h
Bus: 0 Device: 2 Function: 0–3 Offset: A8h
Bus: 0 Device: 3 Function: 0–3 Offset: A8h
Bit Attr
Reset
Value
Description