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ionic: Add interrupts and doorbells

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The ionic interrupt model is based on interrupt control blocks
accessed through the PCI BAR.  Doorbell registers are used by
the driver to signal to the NIC that requests are waiting on
the message queues.  Interrupts are used by the NIC to signal
to the driver that answers are waiting on the completion queues.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Shannon Nelson 2019-09-03 15:28:08 -07:00 • committed by David S. Miller
commit 6461b446f2
8 changed files with 91 additions and 0 deletions
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