Date: Fri, 23 Jan 1998 17:40:38 -0800 From: Bill Rainey <brainey@cisco.com> To: hardware@FreeBSD.ORG Subject: Intel Pro 100/B Ethernet card - PCI irq assignment Message-ID: <199801240140.RAA18281@brainey-ss20.cisco.com>
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I've installed a EtherExpress Pro 100/B card and the system seems to be running fine with it but I have a question about the way IRQs are assigned for PCI devices. I noticed after I config'd the kernel and installed the card that fxp0 was sharing IRQ 11 with the WinCast/TV and the Matrox Millenium cards. It this reasonable (a feature of the PCI bus) or should it really have its own IRQ ? How is IRQ assignment done for PCI cards ? As I said, it seems to work okay so far. Thanks, Bill Rainey ----------------------------------------------------------------------- FreeBSD 3.0-CURRENT #0: Fri Jan 23 03:36:15 PST 1998 brainey@avatar.cisco.com:/src/current/sys/compile/AVATAR CPU: Pentium Pro (199.43-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0x616 Stepping=6 Features=0xf9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV> real memory = 134217728 (131072K bytes) avail memory = 127897600 (124900K bytes) Probing for devices on PCI bus 0: chip0: <Intel 82371FB PCI to ISA bridge> rev 0x02 on pci0.2.0 > bktr0: <BrookTree 848> rev 0x11 int a irq 11 on pci0.6.0 Hauppauge WinCast/TV, Philips NTSC tuner, dbx stereo. > fxp0: <Intel EtherExpress Pro 10/100B Ethernet> rev 0x02 int a irq 11 on pci0 .10.0 fxp0: Ethernet address 00:a0:c9:8e:ed:19 > vga0: <Matrox MGA 2064W graphics accelerator> rev 0x01 int a irq 11 on pci0.1 2.0 ahc0: <Adaptec 2940 Ultra SCSI host adapter> rev 0x00 int a irq 10 on pci0.14 .0 ahc0: aic7880 Wide Channel, SCSI Id=7, 16 SCBs -----------------------------------------------------------------------
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