This patch does a few cleanups of arch/ppc64/kernel/prom_init.c, making
the RTAS instanciation code more readable & more robust, fixing a bug
in the code bringing in additional CPUs (would work with IBM firmware,
but not with another firmware of an upcoming platform), plus remove some
old commented out cruft left-over from the big cleanup.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Splits arch/ppc64/kernel/smp.c into 3 different files, smp.c, pSeries_smp.c and
iSeries_smp.c, thus removing most of the #define mess in those files and making
it easier to add a new platform.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch reworks the code that deals with matching PCI devices
with Open Firmware device nodes. This code made several incorrect
assumptions and can be simplified significantly. The main functional
difference now is that PHBs are no longer special cased, but that
shouldn't cause any specific problem.

It also fixes a problem where u3_iommu.c wouldn't work for PCI
devices that lacked a matching OF device node.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch fixes a few issues in the ppc64 pci code, notably some
incorrect parsing of Open Firmware "ranges" when setting up host
bridge resources that would cause a problem with some future
platforms, a default mapping of the ISA IOs if the OF "isa" node
lacks a "ranges" property, and a safeguard in pci_scan_all_fns()
in case a pci<->OF node mapping cannot be established.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch applies on top of previously posted "ppc64: Move PCI IO mapping
from pSeries_pci.c to pci.c".

It does cosmetic cleanups & add some debug macros to pci.c without actually
changing any functionality. Further patches against ppc64 pci.c that I'll
post will be against a file already patched with this one.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

My previous patch exposed the internals of the ppc_md.  data structure
to drivers, which wasn't nice, this new patch cleans that up.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch adds a ppc64 implementation of the routine providing
the list of default 8250 serial ports. It provides a empty list
by default unless the platform code fills it, and it provides
a generic function for user by Open Firmware based machines which
fills the list based on serial ports found in the OF device-tree.

It depends on the previous patch adding the generic support for
this to the 8250 driver.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch adds an optional callback for the 8250 driver to request the
list of legacy port via a function call instead of relying on a #define
of an array.

This finally allows to fix the problem of platforms like ppc and ppc64
for which the same kernel can boot machines with and without a 8250, and
is necessary to properly deal with a new platform coming to ppc64 which
has a 8250 but with different irq numbers.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch replaces the open_pic IRQ controller driver with a new
version rewritten from scratch, called "mpic" (this is the name of
IBM's open_pic implementation and also the only one actually used
on any platform).

It is smaller, hopefully more readable, supports the various variants
of the cell in a single driver (open_pic_u3.c is gone), and adds
optional support for the workaround of U3 mpic beeing used along with
IO-APICs on HyperTransport (the eval board will uses that, among
others).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch fixes the setup of the secondary CPU(s) on pSeries,
on non-LPAR platforms, especially with 970 CPUs, we need to copy
some of the HID registers from CPU0 to the other ones as soon as
they reach the early asm code. The PowerMac SMP entry did it
already, but not the pSeries one.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch moves some of the routines responsible for dealing
with the mapping of PCI host bridges IO space from pSeries to
the generic ppc64 pci code. PowerMac doesn't use it currently,
but a new platform will soon.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Makes sure msleep() sleeps at least the amount provided, since
schedule_timeout() doesn't guarantee a full jiffy.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The file didn't compile, and the ALSA CVS tree
had dropped the bitfield signedness fixes.

Now that spinlocks are uninlined, it is silly to keep the
BKL inlined. And this should make it a lot easier for people
to play around with variations on the locking (ie Ingo's
semaphores etc).

The code in fbmem.c:fb_blank() is broken.  For drivers without an fb_blank
hook, an FBIO_BLANK ioctl will produce wrong colors or will segfault.
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This does _not_ handle the conditional ones (lock_kernel and the
trylock variants), so there will be a fair number of context
error warnings with this. However, the warnings are disabled by
default in sparse - you have to use "-Wcontext" to see them.

This just sets up the portability defines.

I hadn't realized this was supposed to be an official interface.
Or maybe it's not, but the fb drivers all use it.   Anyway...

- redefine "printk" as "srm_printk" for bootstrappers;
- fix stack corruption problem with bootp/bootpz loaders and older
  SRM consoles.

The high order bits of the input address should be cleared only after
IO type and base are determined.

- add missing "__user" annotations in csum_partial_copy.c;
- make io_remap_page_range more readable and fix a warning.

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into ppc970.osdl.org:/home/torvalds/v2.6/linux

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Intel8x0 driver,RME96 driver,ICE1724 driver,NM256 driver
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

While looking at the signal.c coredumping BUG_ON race, I noticed a bug
(not directly related) in do_coredump.  It was setting the "core dumped"
flag even when the format dumping hook failed (e.g.  for memory
allocation failures).
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This is indeed a new bug, and it is not architecture-specific.  In my
recent changes to close some race conditions, I overlooked the case of a
process using PTRACE_ATTACH on its own children.  The new PT_ATTACHED flag
does not really mean "PTRACE_ATTACH was used", it means "PTRACE_ATTACH is
changing the ->parent link".

This fixes the problem that Stephane Eranian program demonstrates.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Oh, duh.  The race is obvious.  Sorry for the confusion there.

The BUG_ON's were useful for debugging, since they trigger on a lot of
errors, but they _also_ trigger on some unlikely (but valid) races.

So just remove them - just fall through to the regular exit code after
core-dumping (which does everything right).
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

into ppc970.osdl.org:/home/torvalds/v2.6/linux