Major overhaul of the Rhine/Rhine-II driver, structuring it a little more

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like the SMC83C100 EPIC/100 driver:
* Rather than using pointers to the head and tail of the transmit and
receive rings, use wrapping indexes into arrays.  This is a little more
obvious when reading the code.
* More cleanly separate the hardware descriptor from the software descriptor.
* bus_dma it everywhere.
* Implement interrupt pacing and avoid a potential race in the transmit
loop.

Now this looks more or less like the Rhine driver I was working on when
this driver was committed :-)  Update copyright notice to reflect that.

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This commit is contained in:

thorpej 1999-02-12 00:36:48 +00:00

parent 999252997e

commit 7b516b31bd

1 changed files with 578 additions and 433 deletions

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sys/dev/pci/if_vr.c

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