Better late than never...

Respin based on previous comment. Only remaining issue last time was an
extra mb() that I've taken out.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This is a resubmit with a proper subject and with all comments addressed.
Applies cleanly to powerpc.git 649e8579

Mark
--

The todc code from arch/ppc supports many todc/rtc chips and is needed
in arch/powerpc.  This patch adds the todc code to arch/powerpc.
Signed-off-by: NMark A. Greer <mgreer@mvista.com>
--

 arch/powerpc/Kconfig         |    7
 arch/powerpc/sysdev/Makefile |    1
 arch/powerpc/sysdev/todc.c   |  392 ++++++++++++++++++++++++++++++++++
 include/asm-powerpc/todc.h   |  487 +++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 887 insertions(+)
--
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Add Tundra Semiconductor tsi108 pci and platform device data register
function support.
Signed-off-by: NAlexandre Bounine <alexandreb@tundra.com>
Signed-off-by: NRoy Zang <tie-fei.zang@freescale.com>

 ---
Signed-off-by: NPaul Mackerras <paulus@samba.org>

In some systems we may have both a platform EHCI controller and PCI EHCI
controller.  Previously we couldn't build the EHCI support as a module due
to conflicting module_init() calls in the code.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

On Tue, Jun 20, 2006 at 02:01:26PM +1000, Benjamin Herrenschmidt wrote:
> On Mon, 2006-06-19 at 13:08 -0700, Mark A. Greer wrote:
> > MPC10x-style interrupt controllers have a serial mode that allows
> > several interrupts to be clocked in through one INT signal.
> >
> > This patch adds the software support for that mode.
>
> You hard code the clock ratio... why not add a separate call to be
> called after mpic_init,
> something like mpic_set_serial_int(int mpic, int enable, int
> clock_ratio) ?

How's this?
--

MPC10x-style interrupt controllers have a serial mode that allows
several interrupts to be clocked in through one INT signal.

This patch adds the software support for that mode.
Signed-off-by: NMark A. Greer <mgreer@mvista.com>
--

 arch/powerpc/sysdev/mpic.c |   20 ++++++++++++++++++++
 include/asm-powerpc/mpic.h |   10 ++++++++++
 2 files changed, 30 insertions(+)
--
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Allocate IOMMU tables local to the relevant node.
Signed-off-by: NAnton Blanchard <anton@samba.org>
Acked-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Micro-optimisation - add no-minimal-toc to some more arch/powerpc Makefiles.
Signed-off-by: NAnton Blanchard <anton@samba.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Turn on the DART already at 1GB. This is needed because of crippled
devices in some systems, i.e. Airport Extreme cards, only supporting
30-bit DMA addresses.

Otherwise, users with between 1 and 2GB of memory will need to manually
enable it with iommu=force, and that's no good.

Some simple performance tests show that there's a slight impact of
enabling DART, but it's in the 1-3% range (kernel build with disk I/O
as well as over NFS).

iommu=off can still be used for those who don't want to deal with the
overhead (and don't need it for any devices).
Signed-off-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Do disable, not enable, the HT APIC IRQ in the function that is
supposed to.
Enable the MPIC IRQ before enabling the downstream APIC IRQ, avoids
potentially losing an interrupt.
Signed-off-by: NSegher Boessenkool <segher@kernel.crashing.org>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This patch removes all self references and fixes references to files
in the now defunct arch/ppc64 tree.  I think this accomplises
everything wanted, though there might be a few references I missed.
Signed-off-by: NJon Mason <jdmason@us.ibm.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

it's int __iomem *, not int * __iomem...
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

Setup the platform devices needed by the Freescale EHCI USB
host controllers based on a flat device tree
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Currently most callers of lmb_alloc() don't check if it worked or not, if it
ever does weird bad things will probably happen. The few callers who do check
just panic or BUG_ON.

So make lmb_alloc() panic internally, to catch bugs at the source. The few
callers who did check the result no longer need to.

The only caller that did anything interesting with the return result was
careful_allocation(). For it we create __lmb_alloc_base() which _doesn't_ panic
automatically, a little messy, but passable.
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Cleaned up fsl_soc.c based on comments from Olof Johansson.  Ran through
Lindent, and split gfar_mdio init into its own function.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Parse the flat device tree for devices on Freescale SOC's that we know
about (gianfar, gianfar_mdio, i2c, mpc83xx_wdt).  We need to setup
platform devices and platform data for these devices to match arch/ppc
usage.

Also add a helper function (get_immrbase) that reports the base
address of the MMIO registers on the SOC.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Rpn is assigned every time in the loop, no need to increase it too.
Signed-off-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Updated Kconfig & Makefiles in prep for adding support for the Freescale
MPC83xx family of processors to arch/powerpc.  Moved around some config
options that are more globally applicable to other PowerPC processors.
Added a temporary config option (83xx) to match existing arch/ppc support
for the MPC83xx line.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

The patch enabling the new G5's with U4 broke initialization of the DART
driver, causing it to trigger a BUG_ON for a case that is actually
valid. This patch fixes it:
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This adds some very basic support for the new machines, including the
Quad G5 (tested), and other new dual core based machines and iMac G5
iSight (untested). This is still experimental !  There is no thermal
control yet, there is no proper handing of MSIs, etc.. but it
boots, I have all 4 cores up on my machine. Compared to the previous
version of this patch, this one adds DART IOMMU support for the U4
chipset and thus should work fine on setups with more than 2Gb of RAM.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Cleanup the MPIC IO-APIC workarounds, make them a bit more generic,
smaller and faster.
Signed-off-by: NSegher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

When we select ppc32 under the powerpc architecture we get the
error below.  This relates to defining distribute_irqs when this
configuratiom option is undefined.

      CC      arch/powerpc/sysdev/mpic.o
    .../arch/powerpc/sysdev/mpic.c: In function `mpic_setup_this_cpu':
    .../arch/powerpc/sysdev/mpic.c:788: error: `CONFIG_IRQ_ALL_CPUS'
	undeclared (first use in this function)
Signed-off-by: NAndy Whitcroft <apw@shadowen.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Moved 83xx and QUICC Engine interrupt handling code into arch/powerpc
as a precursor of getting 83xx sub-arch building in arch/powerpc.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Email address update, changing old work address to personal (permanent)
one.
Signed-off-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Trying to set the priority would just disable the interrupt due to an
incorrect mask used. We rarely use that call, in fact, I think only in
the powermac code for the cmd-power key combo that triggers xmon. So it
got unnoticed for a while.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

That DART (U3 iommu) code didn't properly scale the number of entries
when using !4k pages. That caused crashes when booting G5s with more
than 2Gb of RAM. This fixes it.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

The ancient ppcdebug/PPCDBG mechanism is now only used in two places.
First, in the hash setup code, one of the bits allows the size of the
hash table to be reduced by a factor of 8 - which would be better
accomplished with a command line option for that purpose.  The other
was a bunch of bus walking related messages in the iSeries code, which
would seem to be insufficient reason to keep the mechanism.

This patch removes the last traces of this mechanism.

Built and booted on iSeries and pSeries POWER5 LPAR (ARCH=powerpc).
Signed-off-by: NDavid Gibson <dwg@au1.ibm.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

setup_irq() aborts immediately if there's no handler for the IRQ in
question. So i8259_init() should set up its handlers before trying to
set up the cascade on IRQ 2.

With this and the patch I sent a few days ago to fix initrd on ppc32, my
Pegasos now runs the arch/powerpc kernel.
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

asm-ppc64/dart.h is included in exactly one place -
arch/powerpc/sysdev/u3_iommu.c.  This patch, therefore, moves it into
arch/powerpc/sysdev.  While we're at it, update the #ifndef/#define
protecting the include, and the filename in the comments of
u3_iommu.c.

Built and booted on pSeries and G5, built for ppc32 powermac.
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

The nvram code formally known as bpa_nvram.c is rather
generic really, so it is quite likely to be useful to
future boards not based on cell.

This patch puts it into arch/powerpc/sysdev.
Signed-off-by: NArnd Bergmann <arndb@de.ibm.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Signed-off-by: NPaul Mackerras <paulus@samba.org>

Signed-off-by: NKumar K. Gala <kumar.gala@freescale.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

We were computing the wrong address for the MPIC timer registers,
so when we went to initialize them we would have been hitting some
unrelated ioremap... oops.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This is so that the 32-bit CHRP code can use it.  The MPC106
initialization code is now in arch/powerpc/sysdev/grackle.c and
is controlled by CONFIG_PPC_MPC106.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This changes the parameters for i8259_init so that it takes two
parameters: a physical address for generating an interrupt
acknowledge cycle, and an interrupt number offset.  i8259_init
now sets the irq_desc[] for its interrupts; all the callers
were doing this, and that code is gone now.  This also defines
a CONFIG_PPC_I8259 symbol to select i8259.o for inclusion, and
makes the platforms that need it select that symbol.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This defines a CONFIG_INDIRECT_PCI symbol to control whether it
gets used or not, and fixes the Kconfig to select that symbol for
platforms that need it.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Having it here rather than in arch/ppc64/kernel/smp.c means that
we can use it on 32-bit SMP systems easily with ARCH=powerpc.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This also puts a copy of indirect_pci.c in arch/powerpc/sysdev
so that we don't need to build in arch/ppc/syslib.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This updates the powermac SMP code to use the mpic driver instead of
the openpic driver and fixes the SMP-dependent context switch code.
We had a subtle bug where we were using interrupt numbers 256-259 for
IPIs, but ppc32 had NR_IRQS = 256.  Moved the IPIs down to use interrupt
numbers 252-255 instead.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This creates the directory structure under arch/powerpc and a bunch
of Kconfig files.  It does a first-cut merge of arch/powerpc/mm,
arch/powerpc/lib and arch/powerpc/platforms/powermac.  This is enough
to build a 32-bit powermac kernel with ARCH=powerpc.

For now we are getting some unmerged files from arch/ppc/kernel and
arch/ppc/syslib, or arch/ppc64/kernel.  This makes some minor changes
to files in those directories and files outside arch/powerpc.

The boot directory is still not merged.  That's going to be interesting.
Signed-off-by: NPaul Mackerras <paulus@samba.org>