[LinuxBIOS] IRQ and interrupts

[Feng, Libo]

Hi, all,

I am confused again by IRQ and Interrupts. In my system, there is a plug-in Broadcom network board(5715).

With lspci -v, I get the message as below:

08:04.0 Ethernet controller: Broadcom Corporation: Unknown device 1678 (rev a3)
    Subsystem: Broadcom Corporation: Unknown device 1678
    Flags: bus master, 66Mhz, medium devsel, latency 64, IRQ 201
    Memory at ff5d0000 (64-bit, non-prefetchable) [size=64K]
    Memory at ff5c0000 (64-bit, non-prefetchable) [size=64K]
    Capabilities: [40] PCI-X non-bridge device.
    Capabilities: [48] Power Management version 2
    Capabilities: [50] Vital Product Data
    Capabilities: [58] Message Signalled Interrupts: 64bit+ Queue=0/3 Enable-

08:04.1 Ethernet controller: Broadcom Corporation: Unknown device 1678 (rev a3)
    Subsystem: Broadcom Corporation: Unknown device 1678
    Flags: bus master, 66Mhz, medium devsel, latency 64, IRQ 201
    Memory at ff5f0000 (64-bit, non-prefetchable) [size=64K]
    Memory at ff5e0000 (64-bit, non-prefetchable) [size=64K]
    Capabilities: [40] PCI-X non-bridge device.
    Capabilities: [48] Power Management version 2
    Capabilities: [50] Vital Product Data
    Capabilities: [58] Message Signalled Interrupts: 64bit+ Queue=0/3 Enable-

With lspci -xxx, I get the message as below:

08:04.0 Ethernet controller: Broadcom Corporation: Unknown device 1678 (rev a3)
00: e4 14 78 16 16 01 b0 02 a3 00 00 02 10 40 80 00
10: 04 00 5d ff 00 00 00 00 04 00 5c ff 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 e4 14 78 16
30: 00 00 00 00 40 00 00 00 00 00 00 00 09 01 40 00
40: 07 48 02 00 20 08 43 04 01 50 02 c0 00 20 00 64
50: 03 58 0c 00 00 10 40 04 05 00 86 00 a8 00 41 b8
60: 10 0c b1 4e 32 c0 00 00 00 00 03 90 00 00 00 00
70: 0a 12 00 00 c7 00 00 00 50 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 c0 00 00 00 fe d0 08 00
90: 01 4f 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

08:04.1 Ethernet controller: Broadcom Corporation: Unknown device 1678 (rev a3)
00: e4 14 78 16 16 01 b0 02 a3 00 00 02 10 40 80 00
10: 04 00 5f ff 00 00 00 00 04 00 5e ff 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 e4 14 78 16
30: 00 00 00 00 40 00 00 00 00 00 00 00 09 02 40 00
40: 07 48 02 00 21 08 43 04 01 50 02 c0 00 20 00 64
50: 03 58 90 00 08 00 91 22 05 00 86 00 18 5a 82 31
60: 84 10 8e 10 8a 2f 00 00 00 00 03 90 00 00 00 00
70: 0a 12 00 00 c7 00 00 00 50 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 c0 00 00 00 fe d0 08 00
90: 01 4f 00 08 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

Lspci -v tells me the IRQ is 201, however, lspci -xxx tells me the IRQ is 09(offset 0x3c). My understanding is wrong or something else. Help me out.

Best Regards

丰立波 Feng Libo @ AMD  Ext: 20906
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Office Phone: [phone]