linux.git/arch/ppc, branch v2.6.14

[PATCH] ppc32: Tell userland about lack of standard TB

2005-10-12T15:24:47+00:00

Glibc is about to get some new high precision timer stuff that relies on
the standard timebase of the PPC architecture.

However, some (rare & old) CPUs do not have such timebase and it is a
bit annoying to have your stuff just crash because you are running on
the wrong CPU...

This exposes to userland a CPU feature bit that tells that the current
processor doesn't have a standard timebase.  It's negative logic so that
glibc will still "just work" on older kernels (it will just be unhappy
on those old CPUs but that doesn't really matter as distro tend to
update glibc & kernel at the same time).

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Linus Torvalds

[PATCH] ppc highmem fix

2005-10-11T16:46:54+00:00

I've noticed that the calculations for seg_size and nr_segs in
__dma_sync_page_highmem() (arch/ppc/kernel/dma-mapping.c) are wrong.  The
incorrect calculations can result in either an oops or a panic when running
fsck depending on the size of the partition.

The problem with the seg_size calculation is that it can result in a
negative number if size is offset > size.  The problem with the nr_segs
caculation is returns the wrong number of segments, e.g.  it returns 1 when
size is 200 and offset is 4095, when it should return 2 or more.

Acked-by: Benjamin Herrenschmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] ppc: Fix timekeeping with HZ=250 on some Mac models

2005-10-05T14:33:42+00:00

Older Macs which uses the VIA chip timers to calibrate the timebase used
some code that wouldn't work if HZ wasn't divisible by 100...

This fixes it at least for 250.  Not totally perfect but should be
enough for now (so it at least works with the default value which is now
250).

There is still a potential issue with the core using CLOCK_TICK_RATE to
maintain xtime and CLOCK_TICK_RATE value on ppc32 is pure crap, but that
is a different problem, this patch at least brings us back to our
previous situation.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Linus Torvalds

[PATCH] ppc32: Add new iBook 12" to PowerMac models table

2005-10-02T00:01:48+00:00

This adds the new iBook G4 (manufactured after July 2005) to the
PowerMac models table.  The model name (PowerBook6,7) is taken from a
12" iBook, I don't know if it also matches the 14" version.  The patch
applies to a vanilla 2.6.13.2 kernel.

Signed-off-by: Sven Henkel 
Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Linus Torvalds

[PATCH] pmac: fix cpufreq for old tipb 550Mhz

2005-10-01T00:20:20+00:00

The old 550Mhz titanium powerbook can switch to a lower frequency
(500Mhz). A user has been repeately reporting overtemp conditions on his
machine at high speed so this simple patch adds support to PowerMac
cpufreq for this machine. The difference in frequency isn't big but seem
enough to fix that user's problems. The patch has been around for some
time now and doesn't seem to cause any problem, so I suppose it could go
in now.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Alain RICHARD 
Signed-off-by: Linus Torvalds

[PATCH] useless includes of linux/irq.h (arch/ppc)

2005-09-30T15:54:02+00:00

Signed-off-by: Al Viro 
Signed-off-by: Linus Torvalds

[PATCH] mv64x60 iomem annotations

2005-09-29T15:46:27+00:00

Signed-off-by: Al Viro 
Signed-off-by: Linus Torvalds

[PATCH] ppc32 ld.script fix for building on ppc64

2005-09-29T15:46:27+00:00

In arch/ppc/boot/ld.script we need OUTPUT_ARCH(powerpc:common) for the
same reasons why we need it in vmlinux.lds.S; when we build on ppc64
box, we need to be explicit about the target.

See http://linus.bkbits.net:8080/linux-2.5/cset@1.1784.8.10 for the
corresponding fix in vmlinux.lds.S.

Signed-off-by: Al Viro 
Signed-off-by: Linus Torvalds

[PATCH] ppc: fix stupid thinko in oprofile fix

2005-09-28T14:46:41+00:00

I did something stupid in my oprofile fix, here's the obvious fix:

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] ppc64: SMU driver update & i2c support

2005-09-23T05:17:35+00:00

The SMU is the "system controller" chip used by Apple recent G5 machines
including the iMac G5.  It drives things like fans, i2c busses, real time
clock, etc...

The current kernel contains a very crude driver that doesn't do much more
than reading the real time clock synchronously.  This is a completely
rewritten driver that provides interrupt based command queuing, a userland
interface, and an i2c/smbus driver for accessing the devices hanging off
the SMU i2c busses like temperature sensors.  This driver is a basic block
for upcoming work on thermal control for those machines, among others.

Signed-off-by: Benjamin Herrenschmidt 
Cc: Jean Delvare 
Cc: Greg KH 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds