DMA register offsets, as well as IRQ, to children. Use direct
config. Use machine type/subtype to determine which devices are
present.
* Add support for the second SCSI controller on the Indigo2.
the controller/SCSI bus.
* Implement controller/SCSI bus reset on SGI HPC3 SCSI using the
"channel reset" bit in the SCSI DMA channel control register.
the platform supplies a clkread function that does something other than
return 0 (which is the default unless overridden by the platorm code).
Supply such a function for the IP22; even if it isn't perfect, it goes
a long way to making ntp usable.
While I'm at it, move the ticks-per-hz variable out of the struct platform
since it's really private to the per-platform interrupt/clock code.
XXX: No clkread function supplied for IP32, since it has other problems --
like a hardcoded ticks-per-hz, but the same code as on the IP22 could be
used.
due to its similarities.
Patch has been tested by many people on the sgimips list for some time with
no complaints.
Contributed by: Christopher SEKIYA <wileyc@rezrov.net>
- Full support for SCSI-2 Tagged commands (enabled by default)
- Implement save and restore datapointer messages
- Formalize interface between MI and MD drivers.
- decouple interface between MD driver and DMA routines
- Use scsipi layer where appropriate (Tags, Sync Negotiations etc)
- control blocks stored using kernel pool(9) functions
- evcnt(9) compliant counters
- Enable advanced features on later WD33c93 chips.
(Identify message out phase is hardware assisted)
- Improved timeout support (one per active control block)
- Improved MESG_IN and MESG_OUT handling
- Start to tidy up debugging output
- Numerous bug fixes and cleanups throughout
Changes are based largely on the NCR53c9x MI driver for ideas on
how to DTRT.
string, if present, will override the second argument (which may be the
path/kernel being loaded). This will provide a way to netboot the kernel
and allow the root device be set to a disk partition.
line parameters, and device_register() to try to match the boot device. Works
on a Challenge S (and similar machines), but will need more work for other
SCSI adapters.
This will allow improvements to the pmaps so that they can more easily defer expensive operations, eg tlb/cache flush, til the last possible moment.
Currently this is a no-op on most platforms, so they should see no difference.
Reviewed by Jason.
this file; while I'm here, rework the GIO arbitrator parameter setup to
match more closely what is done by lunix on the same hardware... Finally,
on a tip from Wilbern Cobb, preserve the graphics-related bits of the
GIO arbitrator parameter register from the PROM-initialized settings so
ARCS console on the graphics display works (tested on both my Indy with
Newport and my Indigo2 with XL gfx).
Based on mvme68k and Atari drivers for the same chipset with the
addition of bus_space support. Attempts have been made to seperate out the
machine dependent dma components and more work is required in this area.
Tested on SGI R4K Indy, but has little testing on other platforms.
interrupt, use platform.ticks_per_hz instead of hardcoded constant for the
counter increment (XX: not that the ticks_per_hz is calculated for the IP32
yet).
them define __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH
in pci_machdep.h and pciide_map_compat_intr() only calls
pciide_machdep_compat_intr_establish() if that preprocessor
define exists.
Ports that don't need to do this no longer need to supply a
dummy function.
all splsoftxxx() calls block soft interrupt 1 and make spllowersoftclock()
re-enable soft interrupt 1.
XXX: This needs to be reworked so that spllowersoftclock() only turns on
softclock interrupts, not all soft interrupt. That change is coming soon.
interrupts as well. The system is quite stable now that soft interrupts
don't pop up at random places where they're unexpected 8-)
Also, while here, fix CPU clock speed calculation for the Indy.
features).
- Implement crude multicast support -- enable reception of all multicast
frames if we have any addresses on the multicast list. TODO: use the
64-bit hash table on the 80c03.
- Implement promiscuous mode.
IPv6 doesn't quite work yet -- DAD finds a duplicate for the
link-local. The 8003 hears its own transmissions, but IFF_SIMPLEX
is not set, so I'm a little confused.
like that, and it has no effect on the Indigo2.
From Christopher SEKIYA <wileyc@rezrov.net>.
Also, query the "ConsoleOut" ARCS variable (i.e. "what the console
really is") rather than "console" ("what the console is configured
as").
sync'ing the descriptor, leading to a race where the packet could complete
after the DMA check but before the sync of the descriptor, sending the code
into unknown territory and the DMA engine into space. Also, fix a bug with
spurious watchdog resets going off due to the if_timer not always being set
on transmit.
Finally, clean up use of hardcoded magic numbers, get them from hpcreg.h
when possible.
soren