information until the problems can be tracked down. Right now these
are unconditional, but later it will be hidden behind a boot verbose.
Also, if there are no events listed in the event mask, return right
away. Specifically avoid writing back interrupt acks in this case.
Print type of pci bridge we find.
Force the IRQ of pci bridges upon all its children.
Allocate the resources on behalf of the bridge when we're testing to see if
they exist.
This should help people who don't read updating instructions very well.
This patch started out with an idea from Shigeru Yamamoto-san in -current.
told to use IRQ 6, progam the pcic to use irq 7 instead. Evidentally,
at least some of the cards are wired this way. If you want to use irq
6, configure it. All the mapping is done just before we set the
interrupt registers. See [FreeBSD98-testers 5064] for details.
Added commentary about valid interrupts on some CBUS pc98 CL PD6722
based cards.
Submitted by: Hiroshi TSUKADA-san <hiroshi@kiwi.ne.jp>
higher chips. Treat it as if it were a 113x. This is correct as far
as 16-bit cards go, at least how we're using it.
# It appears that my TI-1031 based pci card that YAMAMOTO shigeru-san gave
# me on my trip to Japan now works.
elected to do this in the probe rather than the attach so that we don't
disturb things which this might reset. different cards have different
quirks, according to their datasheets.
This should fix the "I booted in windows and rebooted to FreeBSD and
now things don't work" problem.
PR: 4847, 20670
card bus bridges.
We now always use pci interrupts for pci cards. This will allow us to
more easily configure things. You must change your IRQ lines in
/etc/pccard.conf to match what we've probed. I'm not sure the right
way to deal with this right now.
Development of pci pcmcia has been funded by Monzoon Networks AG. I
am grateful for their generosity.
for card change interrupts is different than the pci stuff that's
coming soon. Set the management irq in different ways. If
pci_parallel interrutp routing, then use the PCI way of getting
interrupts. Move polling mode into pcic_isa since when we're routing
via pci polling doesn't work because many bridges (systems hang solid).
If we're routing interrupts via pci, they can be shared, so flag them
as such.
Note, this doesn't actually change anything since the pci attachment
isn't quite ready to be committed.
csc_route and func_route to hold the way that each interrupt is
routed. csc is Card Status Change in the datasheets and standard, but
is called "Management Interrupt" in FreeBSDese. There are three types
of interrupt routing: ISA parallel, PCI parallel and ISA serial (some
chipsets support other types as well, but I don't plan on supporting
them).
When we try to allocate an interrupt, and the type for that interrupt
is pci_parallel, allow it to be shared by oring in RF_SHAREABLE to the
flags argument. Introduce pcic_alloc_resource to allow this to
happen.
interrupts on other buses. Right now it isn't used, but will be for
the pci attachment.
# Add copyright by me for this year since I've changed so much.
o If the class is PCIC_BRIDGE, subclass is PCIS_BRIDGE_PCMCIA and
programming interface is 0, assume that it is a generic PCMCIA PCI
chip we can program. I don't think there are any of these that
we don't know about, but you never know.
o If the class is PCIC_BRIDGE, subclass is PCIS_BRIDGE_CARDBUS and
programming interface is 0, assume that it is a YENTA cardbus bridge
that we know how to cope with. There are likely some cardbus bridges
that haven't it made it in here yet.
pcic_{get,put}b_io. There are some pci bridges (the CL-PD6729 and
maybe others) that do not have memory mapped registers, so we'll need
these in both places. Declare them in pcicvar.h.
have a slightly different 3.3V support than the other clones, so
compensate as best we can. Note: 3.3V support is untested since I do
not have any 3.3V cards that I know of to test it with.
Work through the various power commands and convert them from a "is
this a foo controller or a foo' controller or a foo''' controller" to
a cabability based scheme. We have bits in the softc that tell us
what kind of power control scheme the controller uses, rather than
relying on being able to enumerate them all. Cardbus bridges are
numerous, but nearly all implement the i82365sl-DF scheme (well, a few
implement cirrus CL-PD67xx, but those were made by Cirrus Logic!).
Add a pointer back to the softc in each pcic_slot so we can access
these flags.
Add comments that talk about the issues here. Also note in passing
that there are two differ Vpp schemes in use and that we may need to
adjust the code to deal with both of them. Note why it usually works
now.
We have 5 power management modes right now: KING, AB, DF, PD and VG.
AB is for the i82365 stpes A, B and C. DF is for step DF. PD is the
cirrus logic extensions for 3.3V while VG is the VADEM extensions for
3.3V. KING is for the IBM KING controller found on some old cards.
# I'm looking for one of those old cards or a laptop that has the KING
# bridge in it.
We have to still cheat and treat the AB parts like the DF parts
because pci isn't here yet. As far as I can tell, this is harmless
for actual old parts and necessary to work with 3.3V cards in some
laptops.
This almost eliminates all tests for controller in the code. There
are still a few unrelated to power that need taming as well.
o Introduce flags word to the softc. This will be used to control various
aspects of the driver. Right now there are two bits defined, PCIC_IO_MAPPED
and PCIC_MEM_MAPPED. One for ISA cards that are I/O mapped, the other is
for PCI cards that are memory mapped. Only the ISA side is implemented
with this commit.
o Introduce a pcic_dealloc which will cleanly dealloc resources used. Right
now it is only supported when called from probe/attach.
o Keep track of resources allocated in the pcic_softc.
o move pcictimeout_ch to the softc so we can support multiple devices
in polling mode.
o In ISA probe, set PCIC_IO_MAPPED.
o Introduce and compute the slot mask. This will be used later when
we expand the number of slots on ISA from 2 to 4. In such a case, we
appear to have to use polling mode otherwise we get two different cards
trying to drive the same interrupt line. I don't have hardware to
test this configuration, so I'll stop here.
o Add defines for the VS[12]# bits in register 0x16.
o Add comment about what we're doing reading register 0x16 (PCIC_CDGC)
in the DF case.
o Check bit VS1# rather than a random bit I was checking due to a bogus
transcrition on my part from nakagawa-san's article.
o Add note about IBM KING and 3.3V operation from information larned from
wildboard.
things to get 3.3V. It appears that some cardbus chipsets have id
registers that say they are C step parts, but they really support the
DF step 3.3V functionality.
# Need to verify that IBM KING is handled properly since the MISC1
# register is really a cirrus logic only register.
82C146. The Intel i82365SL-DF supports 3.3V cards. The Step A/B/C
parts do not appear to support this. This is hard to know for sure
since it was deduced from "compatible" parts' data sheets and the
article mentioned below.
Rework the VLSI detection to be a little nicer and not depend on
scanning cards twice. This would allow bad VLSI cards to coexist with
a good intel card, for example. We now detect i82365SL-DF cards where
before we'd detect a VLSI. For the most part, this is good, but we
run a small chance of detecting a single slot 82C146 as a i82365SL-DF.
Since I can't find a datasheet for the 82c146, I don't know if this is
a problem or not.
This work is based on an excellent article, in Japanese, by NAKAGAWA,
Yoshihisa-san that appeared in FreeBSD Press Number 4. He provided a
patch against PAO3 in his article. Since the pcic.c code has changed
some since then, I've gone ahead and cleaned up his patch somewhat and
changed how the code detects the buggy '146 cards.
I also removed the comment asking if there were other cards that
matched the 82C146 since we found one and additional information isn't
necessary.
soon attach directly to pcic rather than the kludge pci-pcic device we
have now.
In some ways, this is similar to the work PAO3 did to try to support
cardbus bridges. In some ways different. This and future commits
will be taking from the spirit of many of those changes. pcicvar.h is
completely different from the pcicvar.h that appeared in PAO3, but
similar in concept.
controller found in many of the early NOTE98 machines that were
produced. This controller is completely unlike the intel 82365, so
I've separated it out from the main pcic driver.
have bad grounding characteristics which allow small static discharges
(or sunspots, we're not 100% sure which) to reach the bridge chip.
This causes the bridge chip to wedge/reset itself. There's no known
cure short of rebooting.
The bug manifests itself by the STAT_CHG return 0xff when read. This
is impossible because the upper bits are reserved (and therefore
zero). In addition, some of the lower bits are one only for memory
cards, which OLDCARD doesn't support, so if they are set, something
seriously foobar'd is going on.
So far we've seen this in exactly one brand of pcmcia <-> isa bridge
which plug and play identifies only as "VIA PCMCIA CARD". This card
just has buffers on the isa card and the actual bridge chip on the
remote slot, which is connected by long ribbon cables. We think this
long cable run, coupled with the lack of coupling capacitors is a
major reason why it is so static sensitive while its bretheren aren't.
Work Supported by: Timing Solutions, Inc.
MFC After: 3 days
For memory for the pccard attribute/common memory mapping allocate on
the pccard. For other allocations, use whatever is the parent of this
device. There's no doubt other issues lurking, but this should make
things closer to being independent.
