- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Provide a fix for certain PowerMacs where the U3 i2c lacks the interrupt
info.

Tested by: Robert Hish
MFC after: 1 week

Rename INTR_VEC to MAP_IRQ. From the OFW or FDT we obtain a
PIC handle with interrupt pin. This we map to the resource
called SYS_RES_IRQ.

Remove unused variables. Spotted by a cppcheck
(devel/cppcheck, http://sourceforge.net/projects/cppcheck) run.

Approved by: nwhitehorn (mentor)

Change the default interrupt polarity on PowerPC systems from high to low.
On Apple systems at least, all the level interrupts are wired active low.
Before this change, our PIC programming only worked because Apple hardware
ignores the interrupt polarity bit on all interrupts except IRQ 0.

Provide for multiple, cascaded PICs on PowerPC systems, and extend the
OFW interrupt map interface to also return the device's interrupt parent.

MFC after: 8.1-RELEASE

Add Open Firmware PNP info strings to GPIOs and Uninorth cells.

Submitted by: Andreas Tobler

Add support for the U4 PCI-Express bridge chipset used in late-generation
Powermac G5 systems. MSI and several other things are not presently
supported.

The U3/U4 internal device support portions of this change were contributed
by Andreas Tobler.

MFC after: 1 week

Let unin(4) attach to U3 controllers found on G5 machines.

Submitted by: Andreas Tobler

Fix the OFW interrupt map parser to use its own idea of the number of interrupt
cells in the map, instead of using a value passed to it and then panicing if it
disagrees. This fixes interrupt map parsing for PCI bridges on some Apple
Uninorth PCI controllers.

Reported by: marcel
Tested on: G4 iBook, Sun Ultra 5

Adapt parts of the sparc64 Open Firmware bus enumeration code (in particular,
the code for parsing interrupt maps) to PowerPC and reflect their new MI
status by moving them to the shared dev/ofw directory.

This commit also modifies the OFW PCI enumeration procedure on PowerPC to
allow the bus to find non-firmware-enumerated devices that Apple likes to add,
and adds some useful Open Firmware properties (compat and name) to the pnpinfo
string of children on OFW SBus, EBus, PCI, and MacIO links. Because of the
change to PCI enumeration on PowerPC, X has started working again on PPC
machines with Grackle hostbridges.

Reviewed by: marius
Obtained from: sparc64

Convert PowerPC AIM PCI and nexus busses to standard OFW bus interface. This
simplifies certain device attachments (Kauai ATA, for instance), and makes
possible others on new hardware.

On G5 systems, there are several otherwise standard PCI devices
(Serverworks SATA) that will not allow their interrupt properties to be
written, so this information must be supplied directly from Open Firmware.

Obtained from: sparc64

Return an error code rather than ENXIO when both rman_init() and
rman_manage_region() failed.

Reviewed by: marcel

Apply missing s/rv/res/g in previous commit.

MFamd64/ia64/i386: Only set the rman bus tags and handles in
bus_activate_resource() methods instead of splitting it up between
bus_alloc_resource() and bus_activate_resource().

Glanced at by: marcel

Redefine bus_space_tag_t on PowerPC from a 32-bit integral to
a pointer to struct bus_space. The structure contains function
pointers that do the actual bus space access.

The reason for this change is that previously all bus space
accesses were little endian (i.e. had an explicit byte-swap
for multi-byte accesses), because all busses on Macs are little
endian.
The upcoming support for Book E, and in particular the E500
core, requires support for big-endian busses because all
embedded peripherals are in the native byte-order.

With this change, there's no distinction between I/O port
space and memory mapped I/O. PowerPC doesn't have I/O port
space. Busses assign tags based on the byte-order only.
For that purpose, two global structures exist (bs_be_tag and
bs_le_tag), of which the address can be taken to get a valid
tag.

Obtained from: Juniper, Semihalf

Make the PCI code aware of PCI domains (aka PCI segments) so we can
support machines having multiple independently numbered PCI domains
and don't support reenumeration without ambiguity amongst the
devices as seen by the OS and represented by PCI location strings.
This includes introducing a function pci_find_dbsf(9) which works
like pci_find_bsf(9) but additionally takes a domain number argument
and limiting pci_find_bsf(9) to only search devices in domain 0 (the
only domain in single-domain systems). Bge(4) and ofw_pcibus(4) are
changed to use pci_find_dbsf(9) instead of pci_find_bsf(9) in order
to no longer report false positives when searching for siblings and
dupe devices in the same domain respectively.
Along with this change the sole host-PCI bridge driver converted to
actually make use of PCI domain support is uninorth(4), the others
continue to use domain 0 only for now and need to be converted as
appropriate later on.
Note that this means that the format of the location strings as used
by pciconf(8) has been changed and that consumers of <sys/pciio.h>
potentially need to be recompiled.

Suggested by: jhb
Reviewed by: grehan, jhb, marcel
Approved by: re (kensmith), jhb (PCI maintainer hat)

When writing to PCI configuration registers, don't immediately
read the same register back. It can cause hangs or machine
checks in certain cases. One particular case is with bge(4)
when a reset is initiated for the controller.

MFC after: 1 month

Set the rid for any resource obtained from rman_resource_reserve.

The end values passed to rman_manage_region() for PCI i/o and mem
spaces were 1 too large. This resulted in the rman list not being
sorted correctly, and USB ports not being discovered on older
TiBooks.

Detective work by: Andreas Tobler <toa at pop dot agri dot ch>

- allow a device hint to disable probing a slot on a Uninorth PCI bus.
e.g. at the loader:

set hint.pcib.1.skipslot=26

This allows undocumented and problematic hardware on some systems
to be ignored, for instance, the USB keyboard/mouse that shows up
on a 12" albook that doesn't exist nor do anything other than eat up
the syscons keyboard. Another one is the unused USB cell in the old
366MHz iBook that locks up the machine when probed.

In a way this is temporary, since there are better fixes for the
above problems, but will be useful in the meantime by allowing
a keyboard to be used to help debug said fixes :)

- while here remove some trailing white space

/* -> /*- for license, minor formatting changes

Add support for i/o-ports. This was cut and pasted from grackle.c

Instead of "OpenFirmware", "openfirmware", etc. use the official spelling
"Open Firmware" from IEEE 1275 and OpenFirmware.org (no pun intended).

Ok'ed by: tmm

- Use the rman_get_* functions instead of reaching into struct resource.
- Remove __RMAN_RESORUCE_VISIBLE again. It's no longer required either
because of the above change or because struct rman is no longer hidden.

Reviewed by: grehan
Tested by: cross-compile on i386

Catch up with __RMAN_RESOURCE_VISIBLE change

Catchup to now-required <sys/module.h> for PowerPC

Remove sparse addressing hack. The macio ATA driver no longer requires
this.

- probe the UniNorth chip in addition to the PCI bridges
- enable GEM ethernet cell if present
- allow sparse address mapping for devices

Approved by: benno

Remove some dead code.

Remove some unused includes.

Driver for the Apple UniNorth Host-PCI bridge.

This is in a PowerMac-specific subdirectory as it is hoped that we will support
more than just the PowerMac platform.