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Board Manual 69
External RAID Section 4
The IQ80321 provides the capability for the user to develop RAID applications. There is a
requirement to provide the ability of making the secondary PCI-X devices private and the ability to
route the interrupt lines. The following requirements describe this capability.
4.1 Private Device Configuration
The devices on the SPCI-X bus (Expansion Slot and Intel
®
82544 Gigabit Ethernet Controller) are
configured as private devices based on Table 86 requirements.
Table 86. Private Device Configuration Requirements
Description
The Secondary PCI-X Expansion slot is configured as private by either the Intel
®
80321 I/O processor (Using a
GPIO pin) or IBM PCI-X Bridge.
The Intel
®
82544 Gigabit Ethernet Controller is configured as private by either the 80321 (Using a GPIO pin) or
IBM PCI-X Bridge.
The device configuration scheme is based on Figure 17.
Figure 17. IDSEL Routing for Private Device Configuration
A9459-02
Intel
®
80321
I/O Processor
SPCI-X Slot
Intel
®
82544
Gigabit Ethernet
GPIO IDSEL_EN_PCIX1
GBE_IDSEL
PCIX_IDSEL
IDSEL
S-Ad Line 24
S-Ad Line 18
S-Ad Line 20
S-Ad Line 22
GPIO IDSEL_EN_GBE
Private Space Public Space
IDSEL_REROUTE_EN
U3D1
U3D1
PCI-X
Bridge
S-Ad Line 28
Dip Switch
S4D1
Dip Switch
S8E1-7
DipSwitch
S7E1