Altera Stratix V Avalon-ST - Manual (Page 103)

Table 5-46: Virtual Function Registers - Differences from PF
Address
(hex)
Name Description
0x000 Vendor ID and Device ID
Register
Vendor ID Register and Device ID Registers defined in PCI
Express Base Specification 3.0 . These registers are hardwired to
all 1s.
0x004 Command and Status
Register
PCI Command and Status Registers. Refer to Table 5-47 for
descriptions of the implemented fields.
0x008 Revision ID and Class Code
Register
PCI Revision ID and Class Code Registers defined in PCI Express
Base Specification 3.0 . The VF has the same settings and access as
PF0.
0x00C BIST, Header Type, Latency
Timer and Cache Line Size
Registers
Contains the following registers defined in the PCI Express Base
Specification 3.0 : BIST Register, Header Type Register, Latency
Timer, Cache Line Size Register. These registers are hardwired to
all 0s for VFs.
0x010:
0x028 Reserved N/A
0x02C Subsystem Vendor ID and
Subsystem ID Registers
PCI Subsystem Vendor ID and Subsystem ID Registers. The VF
has the same settings and access as PF0.
0x030 Reserved N/A
0x034 Capabilities Pointer This register points to the first Capability Structure in the PCI
Configuration Space. For VFs, it points to the MSI-X capability.
0x038:
0x03C Reserved N/A
MSI-X Capability Structure
0x068 MSI-X Control Register Contains the MSI-X Message Control Register, Capability ID for
MSI-X, and the next capability pointer. The VF has the same
fields and access as the parent PF.
0x06C MSI-X Table Offset Points to the MSI-X Table in memory. Also specifies the BAR
corresponding to the memory segment where the MSI-X Table
resides. The VF has the same fields and access as the PF.
0x070 MSI-X PBA Offset Points to the MSI-X Pending Bit Array in memory. Also,
specifies the BAR corresponding to the memory segment where
the PBA Array resides. The VF has the same fields and access as
the parent PF.
PCI Express Capability Structure
0x080 PCI Express Capability List
Register
Capability ID, PCI Express Capabilities Register, and the next
capability pointer. Refer to Table 5-48 for descriptions of the
implemented fields.
UG-01097_sriov
2014.12.15
Virtual Function Registers 5-29
Registers Altera Corporation
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