device pointers. They don't change as the children device drivers
come and go. Rather, check to see if the device is attached where we
would have checked ! NULL. This solves many asymmetries in the code
that likely could lead to crashes when loading/unloading cbb without
one or more of the expected children's driver not present.
space that enables low voltage operation (and maybe other stuff).
Enable the bits in this register so low voltage 16-bit cards may work.
Existance noticed in NetBSD driver.
allows my 3com cards to work again. It appears that this code was
once there, but I removed it when I added the alignment issues.
MFC After: 5 days
PR: 70639 (and likely others)
Instead, use EXCA_MEMREG_WIN_SHIFT which is the amount we shift the
bus address by to write into upper memory (eg above 24MB). Use the
latter in this case.
switched from PCCARD_MEM_FOO to PCCARD_A_MEM_FOO, yet we didn't change
exca in all the right places. Do so now. Also use PCCARD_WIDTH_AUTO
rather than the magic cookie 0.
reading the CIS on some cards. However, not all just yet. This makes
at least some of the xircom cards that weren't working to work. It
doesn't make my home and away card work, however.
o Don't get the card offset wrong. This is the biggest hassle for
reading the CIS. The old code was just so wrong I can't believe that
it worked at all.
o Don't set the bit that allows/forces 16-bit memory access to the
memory. It is hard coded with 0x80.
o Don't need to slow down memory access with wait-states. OLDCARD didn't
need them and it doesn't hurt anything.
o remove bogus grousying in comment.
obtained from o2micro. These should only be needed for 'older'
o2micro bridges (anything before the 7xxx series of bridges), but will
work with the new bridges.
# I don't plan on porting it to oldcard, but will happily commit to
# oldcard if someone else needs them.
o chip_name arrays ifdef'd out.
o use the OLDCARD-like get/put functions so we can support differnt types
of mappings.
o Write the beggings of is this a valid exca device and introduce more
chipset support.
# this is partially a wip, but also needed because some other cahnges I've
# made require some of these changes.
o Protect .h against multiple includes.
o eliminate the pointers to the read/write routines. The
bus_space_read routines can cope since we have the offset
field.
o Print a warning if the requested map address is > 16M and
your chipset doesn't support the extended ExCA registers.
to ExCA register sets. These registers exist in both ISA and PCI
devices in a couple different ways, and this will provide a common
base for future building. This code is a rehash of the pccbb 16-bit
code, which was a rehash of the pcic code, which was a rehash of the
netbsd i82365 code. More hashing to come.
