bge driver and MSI

Rafael Ganascim rganascim at gmail.com
Tue Dec 1 17:31:38 UTC 2009


Hi list,

Can the bge driver use more than one MSI message? If possible, what the
advantage of this on a SMP system (better CPU distribution on interrupts?)?

I have an Broadcom BCM5703X, with 8 MSI messages:
--
bge0 at pci0:1:2:0:    class=0x020000 card=0x00cb0e11 chip=0x16a714e4 rev=0x02
hdr=0x00
    vendor     = 'Broadcom Corporation'
    device     = 'BCM5703X NetXtreme Gigabit Ethernet'
    class      = network
    subclass   = ethernet
    cap 07[40] = PCI-X 64-bit supports 133MHz, 2048 burst read, 1 split
transaction
    cap 01[48] = powerspec 2  supports D0 D3  current D0
    cap 03[50] = VPD
    cap 05[58] = MSI supports 8 messages, 64 bit
--

Thanks.

--
Rafael


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