Add missing ~. We want all the INVALID bits to be 0... Let's see if this
helps people with their interrupt storm problem on card eject.

On some laptops, under very high loads, the socket event register read
in the ISR doesn't read the actual socket event register, but instead
reads garbage (usually 0xffffffff, but other times other t

On some laptops, under very high loads, the socket event register read
in the ISR doesn't read the actual socket event register, but instead
reads garbage (usually 0xffffffff, but other times other things).
This totally violates the PCI spec, but happens rarely enough that a
workaround is in order. This adds one test when we have a real
interrupt to service (which is very rare), and doesn't affect the
usualy 'nothing to see here' case at all.

Problem reported by many, but sam@ gave me this workaround after
diagnosing the problem.

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For each of the voltages that a card might support, make sure that the
socket also supports the voltage. Some XV cards have appeared on the
scene (or cards that report they support XV), and in older

For each of the voltages that a card might support, make sure that the
socket also supports the voltage. Some XV cards have appeared on the
scene (or cards that report they support XV), and in older machines
that have sockets that do not support XV, we were bogusly trying to
power them at XV rather than at 3.3V. Now, power up the card at the
lowest voltage supported by both the card and the socket.

MFC After: 3 days

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Detach the children before we delete them. This is a little cleaner
than just deleting them. Also add comments about why we do this.
Given the current behavior of delete_child, I don't think this c

Detach the children before we delete them. This is a little cleaner
than just deleting them. Also add comments about why we do this.
Given the current behavior of delete_child, I don't think this changes
anything. It just feels cleaner.

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Now that TUNABLE_ULONG is in the tree, and has been for a while, use it.
This also avoids typepunning.

Remove extra debugging that crept in with the integration from p4.

Simplify the opening of the resources for cardbus cards. Before we'd
try very hard to be perfect. However, these attempts broke down when
there were large numbers of resources. We'd not be able to

Simplify the opening of the resources for cardbus cards. Before we'd
try very hard to be perfect. However, these attempts broke down when
there were large numbers of resources. We'd not be able to map them all.

Instead, accept that we might pass more range to thse subbus than
might be optimal be able to compute. However, there's little harm in
this and it allows us to pass greater resources through.

# it has been suggested that we allocate a fixed amount of resources
# on attach and give it out upon request. This might not be a bad idea...

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Ensure that we're aligned at leas tto the size of the resource being requested.
When cbb_debug is on, print the windows that we're mapping.

Shutdown a little better by commenting the shutdown code and acknowledging
any interrupts after we turn off the interrupt mask.

Shut down the card bus bridge hardware on detach. Before we'd just
free the resoruces w/o actually turning off the interrupts. This lead
to interrupt storms if you were to insert a card after kldun

Shut down the card bus bridge hardware on detach. Before we'd just
free the resoruces w/o actually turning off the interrupts. This lead
to interrupt storms if you were to insert a card after kldunloading
the driver.

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MFP4: Changes to hopefully make the new power code work better

o Rather than just try to turn off EXCA_INTR_RESET, set the entire register
to 0. This is slightly faster, and a better hammer.
o Mo

MFP4: Changes to hopefully make the new power code work better

o Rather than just try to turn off EXCA_INTR_RESET, set the entire register
to 0. This is slightly faster, and a better hammer.
o Move attempted clearing of the output enable (EXCA_PWRCTL_OE) back to
after we turn off the power. Modify it to write 0 so that we don't get
Bad Vcc messages on TI bridges (untested, but ru@ sent me a similar patch)
while at the same time avoiding interrupt storms on Ricoh bridges (tested
by me on my Sony).

# Many of my observations of 'breakage' for this patch are due to some bug
# in the load/unload of cbb.ko unlreated to this change. I'll be investigating
# and fixing that bug in the fullness of time.

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MFP4: We no longer use intr_handlers, so remove it.

MFP4: Note why we do the dance we do for waiting for the thread to die.

'PC Card' instead of other variants

This appears to be good for some folks, but really bad for others.
Until we know why, back out 1.127.

Minor improvement for the suspend case for Ricoh based (and others)
CardBus bridges.

o The ricoh bridge needs us to turn off the function interrupts for
16-bit cards when we're powering them up. Other bridges may have
similar issues, so we do this for all of them by setting the

o The ricoh bridge needs us to turn off the function interrupts for
16-bit cards when we're powering them up. Other bridges may have
similar issues, so we do this for all of them by setting the
interrupt in the PCIC register 3 to be 0 (done always anyway)
and turning on the bit in the bridge control register to route these
interrupts via the ISA bus (or via the interrupt configured in the
PCIC register 3). '0' means disable completely. There's a small
chance this may interfere with the o2micro power hacks, but I'll
wait for reports to come in from o2micro users.
o Expand some of the comments about why we do certain things.

# this gets rid of the interrupt storm warnings on my 505TS. I think
# that we may need to do something similar on suspend, but I'm unsure
# since I don't have a laptop that supports suspened/resume with a
# ricoh chipset in it.

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The CD interrupt should only be enabled after we've initialized the
card. Mask it while we're doing power things, as the PC Card standard
suggests. Also, poll the POWER_CYCLE bit 10x a second as we

The CD interrupt should only be enabled after we've initialized the
card. Mask it while we're doing power things, as the PC Card standard
suggests. Also, poll the POWER_CYCLE bit 10x a second as well as
providing a timeout for power cycle interrupt to happen.

The Ricoh '475 that I have doesn't seem to generate an interrupt for
power at the present time, so the polling is necessary for reasons as
yet unknown. This results in an interrupt storm warning that I'm
still trying to quantify (the o2micro trick doesn't work to mitigate
this storm). At the very least, this should help those users that
lost pccards on boot with the prior rev of this code. My VAIO
PCG-505TS is now happier, but more investigation is necessary.

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s/_us//

Move to using tsleeps in the cardbus reset case as well. This
eliminates the last of the DELAYs in pccbb.

Omnibus power and interrupt fixes:
o Don't busy wait on powerup. Instead, use the power up interrupt to wait
for the card to power up. Don't wait when we're turning the card off,
since no inter

Omnibus power and interrupt fixes:
o Don't busy wait on powerup. Instead, use the power up interrupt to wait
for the card to power up. Don't wait when we're turning the card off,
since no interrupt happens in that case.
o Convert many of the long DELAYs to tsleeps. We do not run before
the timer have stared, so DELAY isn't necessary. More DELAYs can likely
be eliminated in the future.
o When powering up the card, don't do anything if the card is already
powered up (before we'd power cycle it). This means that for most
cards we power them up once and then never change the power.
o On card eject, mask (by clearing) the CD bit. Before we set it, which
was wrong. We don't want to see any CD events past the first one since
they need to be debounced.

With these changes, I can insert/eject 16bit cards without glitching xmms'
sound output. Something very important to the development of better pccard
drivers :-)

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Use the standard FreeBSD license for these files.

Approved by: imp, jon

The card activation failured message is lame, and not done for other
busses, nor for the 16-bit cards. Eliminate it.

/* -> /*- for a second clause

Start each of the license/copyright comments with /*-, minor shuffle of lines