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Top Forums UNIX for Dummies Questions & Answers Doubt with irq handler....... Post 302389154 by Corona688 on Friday 22nd of January 2010 11:42:12 PM
Old 01-23-2010
I suspect your test setup isn't actually producing interrupts. Try not loading your driver and running your trigger: dmesg should overflow with 'IRQ 10, nobody cared' messages.

Or, check 'cat /proc/interrupts' to see what it thinks is on those interrupts, they may be routed elsewhere internally. What kind of bus are you triggering on? If you're using ISA, make sure you assign those interrupts to ISA in the CMOS.

Last edited by Corona688; 01-23-2010 at 12:47 AM..
 

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WSS(4)							   BSD Kernel Interfaces Manual 						    WSS(4)

NAME
wss -- Windows Sound System hardware audio driver SYNOPSIS
wss0 at isa? port 0x530 irq 10 drq 0 drq2 1 wss0 at isa? port 0x530 irq 10 drq 0 flags 1 wss* at acpi? wss* at isapnp? wss* at pnpbios? index ? audio* at audiobus? opl* at wss? DESCRIPTION
The wss driver supports Microsoft's Windows Sound System, the MAD16 chip based hardware, and their clones. The base I/O port is set by a jumper on the board; valid choices are 0x530, 0x604, 0xE80, or 0xF40. Both IRQ and DMA channels are software programmable. The IRQ may be set to 7, 9, 10, or 11, and the DMA channel may be set to 0, 1, or 3. The device flags must have bit 0 (value 1) set to enable the MAD16 support. This is to avoid potential conflicts with other devices when probing the MAD16 because it requires use of extra I/O ports not in the base port range. Chips needing this flag include the OPTi 82C928, 82C929, 82C831, and the OAK OTI-601D. Setting bit 1 (value 2) in flags disables the joystick port on MAD16 hardware. SEE ALSO
acpi(4), audio(4), isa(4), isapnp(4), joy(4), opl(4), pnpbios(4) BSD
June 22, 2005 BSD
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