The bug displayed itself by locking up console output on a 7043-140
following a powercycle. This may also have been the cause of bogus
interrupts on motorola class machines.
It is unclear that this interrupt fails to latch as int2_wait_fifo()
depends on it doing so and appears to work. Furthermore, we were previously
unconditionally unmasking the interrupt 0 vector, which led to more
'unexpected interrupt' messages on the console, rather than avoiding them.
Approved by sekiya@.
* we now don't rely on having console linear-mapped (that was terribly
broken, really)
* also, this can be used as generic ibm4xx mapiodev()/unmapiodev()
OK by matt@
* ppc4xx_tlb_mapiodev(): resolve pa to va from reserved TLB entries
OK by matt@
XXX we'll keep TLB_NRESERVED defined until we fix explora to use new API
* don't try to decode vendor-specific PVR, print raw value instead.
* panic() if we see cache wasn't probed, we'd crash later anyway.
* rework the way PVR gets translated to core name.
* while there, normalize printf format ("%s: ...", device_xname(self), ...).
OK by matt@
macros, __BIT, __BITS, SHIFTIN, SHIFTOUT, and __arraycount() from
lib/libkern/libkern.h to sys/cdefs.h. Add a __-prefix to SHIFTIN
and SHIFTOUT, and add a manual page for the bit-twiddling macros,
bits(3).
Make the __BIT and __BITS macros "widthless," as best I can, by
changing their type to uintmax_t from uint32_t. XXX The manual
page lags this change by a bit.
Define __PRIxBIT and __PRIxBITS printf(3) format strings.
behind custom PCI<->GIO bridges:
- Set Engineering GIO Fast Ethernet (TI ThunderLAN)
- Phobos G100 (DEC 21140?)
- Phobos G130 (DEC 21143)
- Phobos G160 (DEC 21143)
All boards present the chipsets' pci configuration registers at some
defined offset in their slots' address space as well as device registers.
We simply allow the MI pci subsystem to attach the devices.
This has been tested with a G130 board (DEC 21143) and works well on IP20
and IP24. The Set Engineering board attaches, works fine when receiving and
lightly transmitting, but chokes for unknown reasons on heavy transmits.
The tl(4) driver may need some fixing.
gio bus arbiter parameters via imc(4) or pic(4).
Slots are identified by name: GIO_SLOT_GFX, GIO_SLOT_EXP1, GIO_SLOT_EXP2.
Provide some helper functions for establishing interrupts associated with
each slot and obtaining product descriptions.
configuration. These are to be used exclusively by a higher interface in
gio/gio.c.
Also add functions to enable, disable and query the state of SysAd bus
parity detection since certain gio(4) cards need to be able to disable
it in order to work around their own buggy implementations.
- Attempt to gracefully recover from a failed decrease_reservation or
increase_reservation, by avoiding physical memory loss.
- always store a machine address in ds_addr; this avoids some mistakes
where machine address would in some case be freed at physical address, or
mapped as physical address.
