Jeff Garzik wrote:
> Has anybody done any work, or put any thought, into MSI support?
>
> Would things massively break if I set up MSI manually in the driver?
>
> I heard rumblings on lkml that Intel has done some work internally w/
> MSI support in Linux, but that doesn't help me much without further
> details ;-)
I found this in my archives:
================================
Subject: RE: [PATCH] 2.5.68 Fix IO_APIC IRQ assignment bug
Date: Mon, 21 Apr 2003 09:34:34 -0700
From: "Nakajima, Jun" <jun.nakajima@intel.com>
<SNIP>
After (vector-based)
CPU0 CPU1
0: 709682 0 IO-APIC-edge timer
2: 0 0 XT-PIC cascade
9: 0 0 IO-APIC-level acpi
14: 4988 1 IO-APIC-edge ide0
15: 10 1 IO-APIC-edge ide1
177: 78 0 IO-APIC-level uhci-hcd
185: 0 0 IO-APIC-level uhci-hcd, uhci-hcd
193: 58 0 IO-APIC-level uhci-hcd
201: 0 0 IO-APIC-level ehci-hcd
209: 356 0 IO-APIC-level eth0
NMI: 0 0
LOC: 707613 707524
ERR: 0
MIS: 0
=========================================
They changed things so the MSI scheme uses the vector number
directly instead of remapping it...
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This archive was generated by hypermail 2b29 : Thu May 15 2003 - 22:00:40 EST