Date: Wed, 09 Dec 1998 10:43:29 +0000 From: Mark Templeton <druid@atc.dera.gov.uk> To: freebsd-hackers@FreeBSD.ORG Subject: Memory holes for ISA device drivers Message-ID: <366E5451.D95C8C6D@atc.dera.gov.uk>
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OS is 2.2.5
Card is on ISA bus, preferably at 0xA00000.
How do I create a (physical) memory hole for a card,
as the card holds 64k shared memory?
The target system BIOS does not support the 15-16M memory hole.
pmap_mapdev() maps physical to virtual memory, but does not
create a hole.
How do I create a memory hole?
Mark.
--
0 00000000 0
0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0
0 0
0 The Druid 0
B1013, DERA Malvern, Internet: Mark.Templeton@atc.dera.gov.uk
St Andrews Road, Janet : Mark.Templeton@uk.mod.hermes
Malvern, Worcs.,
WR14 3PS, Phone: +44-1684-894213
United Kingdom, Fax: +44-1684-894109
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