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
the resource activation if we're dealing with our grandchild.
Otherwise, we run into two problems. One, if the pccard layer wanted
to allocate and activate something, we'd wind up trying to do the
wrong thing twice: the ivars are wrong and we don't want the bridge to
map the resource to the slot. If we're more than a grandchild, then
who knows what kind of ivar is present. In either of these cases, we
just pass it up the food chain.
when PC98 is defined. This is in perparation for a mecia driver
separate from pcic, assuming that all goes well with that effort.
MECIA_SUPPORT won't be removed until after that support is working.
softc.
o Store pointers to softc in dev_t in si_drv1.
o Change 'kludge version' to 'classic version' since things are getting less
kludgy.
o Minor code shuffling so that we probe and attach the pccard slots.
o Minor style(9) changes.
chip to the one that the Japanese use. Now we get insert/remove
events on my PC-9821Ne. More work in bus space is needed to make
drivers work.
MFC after: 3 days
layer. This fixes an ordering problem that would cause the ISR for
the device to run with now power applied to the device. Most cards
failed to deal with this gracefully, and thus would hang on card
eject.
The power down event, for those keeping score, is what causes the
interrupt for the card.
Many folks in the Japanese nomads list have reported this, so I'll be
MFCing quickly for their benefit.
Submitted by: Masayuki FUKUI
MFC after: 2 days
means that the pcic98 functionality might now work (I've tested it on
my pcic machine, but not the pcic98). Since these functions are
rarely called, it is unlikely that this will have a measurable impact
on performance.
FreeBSD. This code doesn't work just yet, but does compile. We need
to start indirecting via the cinfo pointers, rather than directly
calling pcic_*. There may be other issues as well, but you gotta
start somewhere.
Obtained from: PAO3
o Attempt to disable the slot when we detect that there are problems with
it in our ISR. This should make polling mode work better for more cards,
but more work may be needed. This "disabling" sets the card interrupt
register to 0. This worked for me for lots of tests in polling mode.
o Now that I've found datasheets, fix a boatload of magic numbers in the
source to make it easier to understand.
o Use a table of names rather than a big case statement.
o Cull a few of the "unused" controller types that we map to other times
that were a vestiage of PAO code that we never merged in the same way.
o Enforce legal IRQs. You are no longer allowed to try to use IRQs that
will fail on all known ISA/PCI <-> PCMCIA bridges. The bridges do not
have pins for these illegal interrupts, and all of them are listed as
reserved and/or illegeal in the datasheets depending on which one you
look at.
o Add comments about how IBM-AT based computers and NEC PC-98 based computers
map these interrupts and which ones are valid.
o Always clear the bit that steers the management interrupt either to the
value listed in the PCIC_STAT_INT register. I've seen this bit get set
on suspend/resume and after windows boot, and it does't hurt to clear it.
NOTE: this might mean we can share this interrupt in the future.
one memory map. The memory window for the PCIC is identifed by the resource id
for NEWSBUS drivers. pccardd always uses window 0 and rid 0 when setting maps
up. This fix does not affect pccardd's handling of common memory for ed cards.
Reviewed by: imp
o Fix OLDCARD to use the new interface.
o Rename the offsetp argument to deltap to more closely reflect what it
is returning (it returns the delta from the requested value to the actual
value).
o Remove duplicate $FreeBSD$ in pccbb.c
o Allow deltap to be NULL.
o Convert new isa pcic driver and add XXX comments that this function isn't
actually implemented there (which means that NEWCARD pccard stuff won't
work there until it is).
o Revert attempts to make old inferface work in NEWCARD.
Subitted by: peter (Parts of the new version code)
o Add Vpp power at 5.0V rather than 0. Setting it to zero violates
the pccard spec. Most pcic devices in use today don't let us
violate the spec, but some older ones do. Bill Paul sent this to
me a long time ago and I thought I'd commit it before now.
o Add some debug stuff hidden behind bootverbose.
newbus for referencing device interrupt handlers.
- Move the 'struct intrec' type which describes interrupt sources into
sys/interrupt.h instead of making it just be a x86 structure.
- Don't create 'ithd' and 'intrec' typedefs, instead, just use 'struct ithd'
and 'struct intrec'
- Move the code to translate new-bus interrupt flags into an interrupt thread
priority out of the x86 nexus code and into a MI ithread_priority()
function in sys/kern/kern_intr.c.
- Remove now-uneeded x86-specific headers from sys/dev/ata/ata-all.c and
sys/pci/pci_compat.c.
memory space needed by the raylink driver (in progress, nearing
completion).
This is a minorly cleaned up diff from Duncan to help him reduce the
diffs from stock FreeBSD.
Submitted by: Duncan Barclay <dmlb@ragnet.demon.co.uk>
pcic_attach() got a wrong pointer to pcic_slots since device haven't
set correct unit number yet, so always accessed elements of pcic_slots
which belong to pcic0 (unit number 0).
Now we set unit number to pcic device first, then access to pcic_slots
based on the unit number we've just set.
o Modify xe driver to use this.
There's still some issues with this code, so xe can't map the cis just
yet. I'm thinking about how to resolve the issue. pccard_nbk's
pccard_alloc_resource is getting in the way.
o break out some of the probe routine the allocation of resources
into an attach routine
o Recognize PnP ids
o Allocate IRQ per card rather than per system
o Better polling reporting
o Remove unneeded include files in slot.h
o store a pseudo unit number on each device we find.
o Pass a unit number to interrupt/timeout routine and use it for polling
the hardware.
Tested on: My VAIO and with the Linksys pccard reader.
Approved by: jkh
the activate method to the setup_intr, and turn it off to
teardown_intr.
This makes the ed driver not enter its interrupt routine during the
probe. Apparently, an interrupt happens when you disable the
interrupts. There are other problems with ed still.
device_add_child_ordered(). 'ivars' may now be set using the
device_set_ivars() function.
This makes it easier for us to change how arbitrary data structures are
associated with a device_t. Eventually we won't be modifying device_t
to add additional pointers for ivars, softc data etc.
Despite my best efforts I've probably forgotten something so let me know
if this breaks anything. I've been running with this change for months
and its been quite involved actually isolating all the changes from
the rest of the local changes in my tree.
Reviewed by: peter, dfr
o Gut the compatibility interface, you now must attach with newbus.
o Unit numbers from pccardd are now ignored. This may change the units
assigned to a card. It now uses the first available unit.
o kill old skeleton code that is now obsolete.
o Use newbus attachment code.
o cleanup interfile dependencies some.
o kill list of devices per slot. we use the device tree for what we need.
o Remove now obsolete code.
o The ep driver (and maybe ed) may need some config file tweaks to
allow it to attach. See config files that were committed for examples
on how to do this.
Drivers to be commited shortly.
This is an interrum fix until the new pccard. ed, ep and sio will be
supported by me with this release, although others are welcome to try
to support other devices before new pccard is working.
I plan on doing minimal further work on this code base. Be careful
when upgrading, since this code is known to work on my laptop and
those of a couple others as well, but your milage may vary.
BUGS TO BE FIXED:
o system memory isn't allocated yet, it will be soon.
o No devices actually have a pccard newbus attach in the tree.
BUGS THAT MIGHT BE FIXED:
o card removal, including suspend, usually hangs the system.
Many thanks to Peter Wemm and Doug Rabson for helping me to fill in
the missing bits of New Bus understanding at FreeBSD Con '99.
pc98 case that I missed before. Attempt to get the irq for the PCIC
first from the loader env var and second from the config system. I've
been able to boot my laptop with a kernel that hardwired the irq to
10. This should allow boot -c to finally start working for pcic irq,
but I've not tested that. Add $FreeBSD$ to slot.h.
floating before). Attach pccard devices to pcic, one per slot
(although this may change to one per pcic). pcic is now attached to
isa (to act as a bridge) and pccard is attached to pcic, cbb and
pc98ic (the last two are card bus bridge and the pc98ic version of
pcic, neither of which are in the tree yet). Move pccard compat code
into pccard/pccard_compat.c.
THIS REQUIRES A CONFIG FILE CHANGE. You must change your pcic/card
entries to be:
# PCCARD (PCMCIA) support
controller pcic0 at isa?
controller pcic1 at isa?
controller card0
The old system was upside down and this corrects that problem. It
will make it easier to add support for YENTA pccard/card bus bridges.
Much more cleanup needs to happen before newbus devices can have
pccard attachments. My previous commit's comments were premature.
will allow newbus based drivers to have pccard attachments. Also
start printing out probe messages for pccards stating the resources
used and regularize many of the pccard printfs.
Reviewed by: Peter Wemm.
o Add field to dev_desc for the size of the io port range. This isn't
used yet in the committed sources, but will make the transition easier
in the future.
If you build this into your kernel, you will need to rebuild pccardd.
in the not APIC_IO case. This should silence the warnings when
building pcic.c as well as the undefined functions when the kernel
links.
Noticed by: several people in -current and me building the kernel
This will trigger inserted()) to be called twice which confuses pccardd.
Add code to not process pcicitr())'s when in the middle of a resume
process. The real insertion of cards and the emulated one in the suspend/resume
code really do not mix up.
however is only marginally useful until the new-style bus (pci and isa)
stuff comes onboard to give us a better shot at actually pci and isa
drivers loadable (or preloadable anyway).
We do the same thing we do with all the other Vadem chips and print the
right identification for these chips. Tested with the 365, and inferred
for the 465.
This allows the cheapo PCMCIA card that I got from necx to print the right
chip number on boot.
`void *' arg. Fixed or hid most of the resulting type mismatches.
Handlers can now be updated locally (except for reworking their
global declarations in isa_device.h).
option PCIC_NOCLRREGS). This is now the default behavior since it's
apparently required for the CLPD6832, and doesn't negatively affect
any of my test machines.
Requested by: Ted Faber <faber@ISI.EDU>
(update_intr_masks might not need to be done in 3.X, but the new generic
interrupt code is incomplete w/regard to support for the PCCARD code, so
to avoid any potential problems use it. It can't hurt).
- Correctly register pcic_imask with the system interrupt code.
- Call update_intr_masks() so that pcic_imask modifications that occur
when card interrupts are registered get updated in the system
interrupt code.
follow.
* Rename/reorder all of the pccard structures, change many of the member
names to be descriptive, and follow more closely other 'bus' drivers
naming schemes.
* Rename a bunch of parameter and local variable names to be more
consistant in the code.
* Renamed the PCCARD 'crd' device to be the 'card' device
* KNF and make the code consistant where it was obvious.
* ifdef'd out some unused code
speaker. Cirrus Logic PCIC chips must enable this. There is also a Low
Power Dynamic Mode bit that claims to reduce power consumption by 30%,
so enable it and hope for the best.
PR: 4650
Submitted by: Nick Sayer <nsayer@quack.kfu.com>
(pt. unused) for TI PCI1130.
2. pccard.c: PCIC_RESUME_RESET is now (also) a sysctl. (Never make it
a #ifdef if it can be made a sysctl!)
3. pcic.c: make getb() and putb() proper member functions of struct
pcic_slot. Add a couple of missing casts.
Use the name argument almost the same in all LKM types. Maintain
the current behavior for the external (e.g., modstat) name for DEV,
EXEC, and MISC types being #name ## "_mod" and SYCALL and VFS only
#name. This is a candidate for change and I vote just the name without
the "_mod".
Change the DISPATCH macro to MOD_DISPATCH for consistency with the
other macros.
Add an LKM_ANON #define to eliminate the magic -1 and associated
signed/unsigned warnings.
Add MOD_PRIVATE to support wcd.c's poking around in the lkm structure.
Change source in tree to use the new interface.
Reviewed by: Bruce Evans
non-broken chipssets whose ID is 0x84, such as the one found in the NEC
6030H.
> The code relies on the assumption that on a genuine_broken vlsi, you
> don't get 0x84 when probing slot 1 in the normal location. On the versa I
> do get 0x84 when probing slot 1 in the normal location. What you get on
> genuine_broken at the normal slot 1 location is unknown to me;
Submitted by: Chris Timmons <skynyrd@opus.cts.cwu.edu>
Assuming that the intr_mask[] was updated by changing the maskptrs (the
existing update_intr_masks() function will not work) this code was
written so the PCIC controller insertion/removal events will not
interrupt the card IRQ handler events.
Some possible scenarios:
+ Card is removed during IRQ handler:
- PCIC card handler is allowed to interrupt
- card removal event is called, removing the driver and data structures
* card interrupt handler continues w/out driver, data structures, and hardware
OR (the code just committed)
* card IRQ handler has no hardware to read/write to, but has code and
data to run on (XXX- Assume it completes and doesn't spin forever)
- PCIC card handler unloads the card driver
The current situation at least leaves the card interrupt handlers the
drivers and data structures to work with although the hardware can't be
guaranteed.
Reviewed by: bde
All new code is "#ifdef PC98"ed so this should make no difference to
PC/AT (and its clones) users.
Ok'd by: core
Submitted by: FreeBSD(98) development team
in place device drivers can now register power-down/power-up routines so
that we can use common routines to power-up/power-down cards for
insert/removals, suspend/resume, etc..
Reviewed by: phk
Submitted by: the 'Nomads'
