[ipxe-devel] undi_get_information->IntNumber : returned values

Yossef Efraim yossefe at mellanox.com
Thu Sep 4 23:09:44 UTC 2014

Hi Michael / iPXE community-

I have a question regarding the IntNumber returned to the bootloader - at 'pxenv_undi_get_information' - we have the following line:

undi_get_information->IntNumber =
( netdev_irq_supported ( pxe_netdev ) ? dev->desc.irq : 0 );

So in case the device have no IRQ supported the IntNumber is 0.
This IRQ 0 - is usually system timer.

1.       Is it allowed (pxespec) to borrow this system timer as an interrupt ?

a.       If not - what's the alternative (for non IRQ supporting device) - what should be returned in 'IntNumber' ?


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