Message Signalled Interrupts Question ...

Wilkinson, Alex alex.wilkinson at
Fri May 11 03:06:24 UTC 2007

    0n Fri, May 11, 2007 at 03:49:01AM +0100, Rui Paulo wrote: 

bge(4) has MSI support but not em(4) ... bizarre.

  bge0 at pci5:2:0:  class=0x020000 card=0x12bc103c chip=0x169614e4 rev=0x03 hdr=0x00
      vendor     = 'Broadcom Corporation'
      device     = 'BCM5782 Broadcom NetXtreme Gigabit Ethernet for hp'
      class      = network
      subclass   = ethernet
      cap 01[48] = powerspec 2  supports D0 D3  current D0
      cap 03[50] = VPD
      cap 05[58] = MSI supports 8 messages, 64 bit 
  em0 at pci5:4:0:   class=0x020000 card=0x10018086 chip=0x10268086 rev=0x04 hdr=0x00
      vendor     = 'Intel Corporation'
      device     = '82545GM Gigabit Ethernet Controller'
      class      = network
      subclass   = ethernet
      cap 01[dc] = powerspec 2  supports D0 D3  current D0
      cap 07[e4] = PCI-X 64-bit supports 133MHz, 2048 burst read, 1 split transaction


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