[RTnet-developers] Disabling Soft Interrupts for new Broadcom NetXtreme Driver

[Edward H. <qua...@op...>]

I am attempting to port the Broadcom tg3 NetXtreme linux driver to
rtnet. The Broadcom driver internally utilizes
spin_lock_bh/spin_unlock_bh to disable/enable software interrupts.
There is no rtdm lock equivalent.
I believe that software interrupts are used by the driver for the
following reasons:
1. To allow for simultaneous DMA read write operations
2. To use shared local variables in a critical section of the driver.
3. To receive changes to settings variables in realtime from the
userpace Nextreme utilities.  (not sure about this one).

What RTDM lock functions should I use to substitute for
spin_lock_bh/spin_unlock_bh?  Should I substitute
rtdm_lock_get_irqsave/rtdm_lock_put_irqrestore?  Or does rtdm need to ne
extended for softirqs used internally by the driver?

I looked through the other device drivers and could not detect the
correct substitute.

RSVP.

Thanks.

Best Regards,

Ed