Impact: cleanup

x86 subarchitectures each defined a "apic_id_registered()" method,
which could be an inline function depending on which subarch we build
for, and which was also the name of a genapic field.

Untangle this namespace spaghetti by giving each of the instances
a separate name.

Also remove wrapper macro obfuscation.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Impact: refactor code

x86 subarchitectures each defined a "acpi_madt_oem_check()" method,
which could be an inline function, or an extern, or a static function,
and which was also the name of a genapic field.

Untangle this namespace spaghetti by setting ->acpi_madt_oem_check()
to NULL on those subarchitectures that have no detection quirks,
and rename the other ones (summit, es7000) that do.

Also change default_acpi_madt_oem_check() to handle NULL entries,
and clean its control flow up as well.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

The APIC_INIT() / APICFUNC / IPIFUNC macros were ugly and obfuscated
the true identity of various APIC driver methods.

Now that they are not used anymore, remove them.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Clean up the APIC driver template:

 - order fields properly
 - use the macro names explicitly (so that they can be renamed later)
 - fill in NULL entries as well
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Clean up the APIC driver template:

 - order fields properly
 - use the macro names explicitly (so that they can be renamed later)
 - fill in NULL entries as well
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Clean up the APIC driver template:

 - order fields properly
 - use the macro names explicitly (so that they can be renamed later)
 - fill in NULL entries as well
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Clean up the APIC driver template:

 - order fields properly
 - use the macro names explicitly (so that they can be renamed later)
 - fill in NULL entries as well
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Clean up the APIC driver template:

 - order fields properly
 - use the macro names explicitly (so that they can be renamed later)
 - fill in NULL entries as well
Signed-off-by: NIngo Molnar <mingo@elte.hu>

- reorder fields so that they appear in struct genapic field ordering

- add zero-initialized fields too so that it's apparent which functionality
  is default / missing.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

- reorder fields so that they appear in struct genapic field ordering

- add zero-initialized fields too so that it's apparent which functionality
  is default / missing.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

- reorder fields so that they appear in struct genapic field ordering

- add zero-initialized fields too so that it's apparent which functionality
  is default / missing.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

- reorder fields so that they appear in struct genapic field ordering

- add zero-initialized fields too so that it's apparent which functionality
  is default / missing.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

- reorder fields so that they appear in struct genapic field ordering

- add zero-initialized fields too so that it's apparent which functionality
  is default / missing.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Rename genapic-> to apic-> references because in a future chagne we'll
open-code all the indirect calls (instead of obscuring them via macros),
so we want this reference to be as short as possible.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

64-bit x86 uses the IPI callbacks even on UP - so provide them
generally.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Unify genapic.h some more.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Unify remaining bits of genapic_32/64.h.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Move over the (now identical) struct genapic definitions from
genapic_32/64.h to genapic.h.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Impact: pre unification cleanup

Make genapic_32.h similar to genapic_64.h: reorder fields, unify types
and bring in new entries.

No existing functionality is affected.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Impact: pre unification cleanup

Make genapic_64.h similar to genapic_32.h: reorder fields, unify types
and bring in new entries.

No existing functionality is affected.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

_PAGE_COHERENT is now always set in _PAGE_RAM resp. PAGE_KERNEL.
Thus it has to be masked out, if the BAT mapping should be non
cacheable or CPU_FTR_NEED_COHERENT is not set.

This will work on normal SMP setups because we force-set
CPU_FTR_NEED_COHERENT as part of CPU_FTR_COMMON on SMP.
Signed-off-by: NGerhard Pircher <gerhard_pircher@gmx.net>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

In the VIO bus code the wrappers for dma alloc_coherent and free_coherent
calls are rounding to IOMMU_PAGE_SIZE.  Taking a look at the underlying
calls, the actual mapping is promoted to PAGE_SIZE.  Changing the
rounding in these two functions fixes under-reporting the entitlement
used by the system.  Without this change, the system could run out of
entitlement before it believes it has and incur mapping failures at the
firmware level.

Also in the VIO bus code, the wrapper for dma map_sg is not exiting in
an error path where it should.  Rather than fall through to code for the
success case, this patch adds the return that is needed in the error path.
Signed-off-by: NRobert Jennings <rcj@linux.vnet.ibm.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

Remove some leftover cruft from the arch/ppc days
Signed-off-by: NJosh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: NKumar Gala <galak@kernel.crashing.org>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

The DaVinci code had an implementation of the OTG transceiver glue
too; make it use the new-standard one.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Acked-by: NFelipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Impact: Cleanup

While I was looking through the new and improved bootstrap code - great
work that, thanks! I found the below a slight improvement.

Remove unnecessary ugly #ifdef construct around debug register clear.
Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com>

Impact: fix potential miscompile (currently believed non-manifest)

As the comment explains, the VBE DDC call can clobber any register.
Tell the compiler about that fact.
Signed-off-by: NAndreas Schwab <schwab@suse.de>
Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com>

The 5329 ColdFire peripheral IO register addresses are not relative to
the MBAR register. So fix the serial platform setup array and IRQ acking
to use just the direct addresses.
Signed-off-by: NMatt Waddel <Matt.Waddel@freescale.com>
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>

Make restart blocks working, required for proper syscall restarting.
Derived from same changes for m68k arch by Andreas Schwab <schwab@suse.de>
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>

Signed-off-by: NGreg Ungerer <gerg@uclinux.org>

Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>

Greg Ungerer said about this board:
Only ever a handful where made, and that was in 1999.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>

m68knommu does not set the Kconfig NO_DMA variable, but also does
not provide the required functions, resulting in the following
build error triggered by commit a40c24a1
(net: Add SKB DMA mapping helper functions.):

<--  snip  -->

..
  LD      vmlinux
net/built-in.o: In function `skb_dma_unmap':
(.text+0xac5e): undefined reference to `dma_unmap_single'
net/built-in.o: In function `skb_dma_unmap':
(.text+0xac7a): undefined reference to `dma_unmap_page'
net/built-in.o: In function `skb_dma_map':
(.text+0xacdc): undefined reference to `dma_map_single'
net/built-in.o: In function `skb_dma_map':
(.text+0xace8): undefined reference to `dma_mapping_error'
net/built-in.o: In function `skb_dma_map':
(.text+0xad10): undefined reference to `dma_map_page'
net/built-in.o: In function `skb_dma_map':
(.text+0xad82): undefined reference to `dma_unmap_page'
net/built-in.o: In function `skb_dma_map':
(.text+0xadc6): undefined reference to `dma_unmap_single'
make[1]: *** [vmlinux] Error 1

<--  snip  -->
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>

Fix cache flushing for the 527x ColdFire processors
Its CACR register format is slightly different.

Along with this add support for flushing the 523x cache, which uses
the same format as the 527x ColdFire's, and was missing flush support.
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>

Part of the code that did not make sense to me got removed by Greg.
This is part two:

The first compare is to check whether the interrupts are disabled or not.
Depending on the result we exectute the RESTORE_ALL macro is not only
restoring the stack but also returning to caller.
The test for pending softirq has been removed because it is allready done
in irq_exit().
Since system_call() is allso using the SAVE_ALL macro and returning via
ret_from_exception label I see no reason why we could not do this here
as well. This is also handy because if we return from the timer interrupt
and we need to resched than we check for this :)
Signed-off-by: NSebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>

Impact: cosmetic cleanup
Signed-off-by: NTejun Heo <tj@kernel.org>

Impact: build fix

x86_cpu_to_apicid and x86_bios_cpu_apicid aren't defined for voyage.
Earlier patch forgot to conditionalize early percpu clearing.  Fix it.
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: NTejun Heo <tj@kernel.org>

Impact: sync 32 and 64-bit code

Merge load_gs_base() into switch_to_new_gdt().  Load the GDT and
per-cpu state for the boot cpu when its new area is set up.
Signed-off-by: NBrian Gerst <brgerst@gmail.com>
Signed-off-by: NTejun Heo <tj@kernel.org>

Impact: optimization

mb() generates an mfence instruction, which is not needed here.  Only
a compiler barrier is needed, and that is handled by the memory clobber
in the wrmsrl function.
Signed-off-by: NBrian Gerst <brgerst@gmail.com>
Signed-off-by: NTejun Heo <tj@kernel.org>

Impact: cleanup

Rename init_gdt() to setup_percpu_segment(), and move it to
setup_percpu.c.
Signed-off-by: NBrian Gerst <brgerst@gmail.com>
Signed-off-by: NTejun Heo <tj@kernel.org>