CVS commit: src/sys/dev/pci

[Michael Lorenz <macallan%netbsd.org@localhost>]

Module Name:    src
Committed By:   macallan
Date:           Fri Dec 21 05:32:09 UTC 2007

Modified Files:
        src/sys/dev/pci: genfb_pci.c

Log Message:
only enable the fb mapping at offset 0 after attempting to mmap page 0
This way we avoid a conflict with PCI resources on some Sun graphics cards
which have firmware that likes to put memory resources at low addresses.
For instance, if we have 1MB framebuffer and registers at 0x30000 we'll
get the registers when mmap()ing 0x30000 until someone tries to mmap(0),
then we'll get framebuffer memory for the entire 1st MB.
This needs an ioctl() to switch between fb-at-0 and PCI ranges.


To generate a diff of this commit:
cvs rdiff -r1.4 -r1.5 src/sys/dev/pci/genfb_pci.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.