FPGA Intellectual Property
PCI Express*, Networking and Connectivity, Memory Interfaces, DSP IP, and Video IP
Announcements
Intel Support hours are Monday-Fridays, 8am-5pm PST, except Holidays. Thanks to our community members who provide support during our down time or before we get to your questions. We appreciate you!

Need Forum Guidance? Click here
Search our FPGA Knowledge Articles here.

PCIe msi

Altera_Forum
Honored Contributor II
765 Views

Can anybody tell me how should configure "MSI enable" bit in "MSI control register" of PCI express IP is it through RTL or SYSTEM SOFTWARE

0 Kudos
1 Reply
Altera_Forum
Honored Contributor II
80 Views

This is done by your system software, a.k.a. the driver. If you enable this, the device will (have to) send interrupts not as legacy interrupts but as MSI. If you disable this, the device is only allowed to use legacy interrupts.

Reply