Commit Graph

1304 Commits

Author SHA1 Message Date
Ishizaki Kou 7f2c85777d [POWERPC] Celleb: New HTAB Guest OS Interface on Beat
This changes the Celleb code to work with new Guest OS Interface
to tweak HTAB on Beat. It detects old and new Guest OS Interfaces
automatically.

Signed-off-by: Kou Ishizaki <Kou.Ishizaki@toshiba.co.jp>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-10-03 13:25:28 +10:00
Michael Ellerman 0411a5e233 [POWERPC] Update mpic to use dcr_host_t.base
Now that dcr_host_t contains the base address, we can use that in the mpic
code, rather than storing it separately.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-10-03 13:25:27 +10:00
Michael Ellerman 0b94a1eeee [POWERPC] Store the base address in dcr_host_t
In its current form, dcr_map() doesn't remember the base address you passed
it, which means you need to store it somewhere else.  Rather than adding the
base to another struct it seems simpler to store it in the dcr_host_t.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-10-03 13:25:27 +10:00
Mathieu Desnoyers d4243c175f [POWERPC] Include pagemap.h in asm/powerpc/tlb.h
Fixes this powerpc build error in 2.6.22-rc6-mm1 for powerpc 64 with
CONFIG_SWAP=n :

In file included from include2/asm/tlb.h:60,
                 from /home/compudj/git/linux-2.6-lttng/arch/powerpc/mm/init_64.
c:56:
/home/compudj/git/linux-2.6-lttng/include/asm-generic/tlb.h: In function 'tlb_flush_mmu':
/home/compudj/git/linux-2.6-lttng/include/asm-generic/tlb.h:76: error: implicit declaration of function 'release_pages'
/home/compudj/git/linux-2.6-lttng/include/asm-generic/tlb.h: In function 'tlb_remove_page':
/home/compudj/git/linux-2.6-lttng/include/asm-generic/tlb.h:105: error: implicit declaration of function 'page_cache_release'
make[2]: *** [arch/powerpc/mm/init_64.o] Error 1

release_pages is declared in linux/pagemap.h, but cannot be included in
linux/swap.h because of a sparc related comment:

/* only sparc can not include linux/pagemap.h in this file
 * so leave page_cache_release and release_pages undeclared... */
#define free_page_and_swap_cache(page) \
        page_cache_release(page)
#define free_pages_and_swap_cache(pages, nr) \
        release_pages((pages), (nr), 0);

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-10-03 12:02:43 +10:00
Hugh Dickins 048c8bc90e [POWERPC] ppc64: support CONFIG_DEBUG_PREEMPT
Add CONFIG_DEBUG_PREEMPT support to ppc64: it was useful for testing
get_paca() preemption.  Cheat a little, just use debug_smp_processor_id()
in the debug version of get_paca(): it contains all the right checks and
reporting, though get_paca() doesn't really use smp_processor_id().

Use local_paca for what might have been called __raw_get_paca().
Silence harmless warnings from io.h and lparcfg.c with local_paca -
it is okay for iseries_lparcfg_data to be referencing shared_proc
with preemption enabled: all cpus should show the same value for
shared_proc.

Why do other architectures need TRACE_IRQFLAGS_SUPPORT for DEBUG_PREEMPT?
I don't know, ppc64 appears to get along fine without it.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-10-03 11:48:44 +10:00
Stephen Rothwell 5669c3cf19 [POWERPC] Limit range of __init_ref_ok somewhat
This patch introduces zalloc_maybe_bootmem and uses it so that we don't
have to mark a whole (largish) routine as __init_ref_ok.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-10-03 11:48:44 +10:00
Stephen Rothwell 6fccab26df [POWERPC] Make vio_bus_type static
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-10-03 11:48:43 +10:00
Domen Puncer 6f6682809b [POWERPC] clk.h interface for platforms
This provides an implementation of the <linux/clk.h> interface for
arch/powerpc using a set of function pointers in clk_functions.
Platforms that want to support this interface should fill
clk_functions and select CONFIG_PPC_CLOCK in Kconfig.

Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-10-03 09:11:56 +10:00
Robert P. J. Day 20b31b53ea [POWERPC] Prevent direct inclusion of <asm/rwsem.h>.
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-22 14:49:21 +10:00
Mike Frysinger fc624eae32 [POWERPC] Use __attribute__ in asm-powerpc
Pretty much everyone uses "__attribute__" or "attribute", no one uses
"__attribute".  This tweaks the three places in asm-powerpc where this
comes up.  While only asm-powerpc/types.h is interesting (for
userspace), I did asm-powerpc/processor.h as well for consistency.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-22 14:49:21 +10:00
Paul Mackerras 0ce49a3945 Merge branch 'linux-2.6' 2007-09-20 10:09:27 +10:00
Benjamin Herrenschmidt c27da33969 [POWERPC] Fix timekeeping on PowerPC 601
Recent changes to the timekeeping code broke support for the PowerPC 601
processor which doesn't have the usual timebase facility but a slightly
different thing called (yuck) the RTC.

This fixes it, boot tested on an old 601 based PowerMac 7200.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:26:34 +10:00
Stephen Rothwell ee7a76da1e [POWERPC] Size swapper_pg_dir correctly
David Gibson pointed out that swapper_pg_dir actually need to be
PGD_TABLE_SIZE bytes long not PAGE_SIZE.  This actually saves 64k in
the bss for a kernel ppc64_defconfig built with CONFIG_PPC_64K_PAGES.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:25:34 +10:00
Stephen Rothwell 7b2c3c5b1d [POWERPC] Fix section mismatch in PCI code
Create a helper function (alloc_maybe_bootmem) that is marked __init_refok
to limit the chances of mistakenly referring to other __init routines.

WARNING: vmlinux.o(.text+0x2a9c4): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.update_dn_pci_info' and '.pci_dn_reconfig_notifier')
WARNING: vmlinux.o(.text+0x36430): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.mpic_msi_init_allocator' and '.find_ht_magic_addr')
WARNING: vmlinux.o(.text+0x5e804): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config')
WARNING: vmlinux.o(.text+0x5e8e8): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config')
WARNING: vmlinux.o(.text+0x5e968): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config')

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:25:34 +10:00
Domen Puncer ee983079ce [POWERPC] MPC5200 low power mode
Low-power mode implementation for Lite5200b.
Some I/O registers are also saved here.

A recent U-Boot that supports this (lite5200b_PM_config) is needed.

Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:25:34 +10:00
Michael Ellerman 7af1443a9d [POWERPC] spufs: Handle errors in SPU coredump code, and support coredump to a pipe
Rework spufs_coredump_extra_notes_write() to check for and return errors.

If we're coredumping to a pipe we can't trust file->f_pos, we need to
maintain the foffset value passed to us. The cleanest way to do this is
to have the low level write routine increment foffset when we've
successfully written.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:12:19 +10:00
Michael Ellerman e55014923e [POWERPC] spufs: Cleanup ELF coredump extra notes logic
To start with, arch_notes_size() etc. is a little too ambiguous a name for
my liking, so change the function names to be more explicit.

Calling through macros is ugly, especially with hidden parameters, so don't
do that, call the routines directly.

Use ARCH_HAVE_EXTRA_ELF_NOTES as the only flag, and based on it decide
whether we want the extern declarations or the empty versions.

Since we have empty routines, actually use them in the coredump code to
save a few #ifdefs.

We want to change the handling of foffset so that the write routine updates
foffset as it goes, instead of using file->f_pos (so that writing to a pipe
works).  So pass foffset to the write routine, and for now just set it to
file->f_pos at the end of writing.

It should also be possible for the write routine to fail, so change it to
return int and treat a non-zero return as failure.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:12:19 +10:00
Michael Ellerman 48cad41f7e [POWERPC] spufs: Combine spufs_coredump_calls with spufs_calls
Because spufs might be built as a module, we can't have other parts of the
kernel calling directly into it, we need stub routines that check first if the
module is loaded.

Currently we have two structures which hold callbacks for these stubs, the
syscalls are in spufs_calls and the coredump calls are in spufs_coredump_calls.
In both cases the logic for registering/unregistering is essentially the same,
so we can simplify things by combining the two.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:12:19 +10:00
Jeremy Kerr 4ec3c3d08d [POWERPC] spufs: Remove asmlinkage from spufs_calls
spu_create and spu_run are wrapped by the cell syscall layer, so
we don't need the asmlinkage.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:12:17 +10:00
Jeremy Kerr 98f06978ff [POWERPC] cell: Unify spufs syscall path
At present, a built-in spufs will not use the spufs_calls callbacks, but
directly call sys_spu_create.  This saves us an indirect branch, but
means we have duplicated functions - one for CONFIG_SPU_FS=y and one for
=m.

This change unifies the spufs syscall path, and provides access to the
spufs_calls structure through a get/put pair.  At present, the only user
of the spufs_calls structure is spu_syscalls.c, but this will facilitate
adding the coredump calls later.

Everyone likes numbers, right?  Here's a before/after comparison with
CONFIG_SPU_FS=y, doing spu_create(); close(); 64k times.

Before:
	[jk@cell ~]$ time ./spu_create
	performing 65536 spu_create calls

	real    0m24.075s
	user    0m0.146s
	sys     0m23.925s

After:
	[jk@cell ~]$ time ./spu_create
	performing 65536 spu_create calls

	real    0m24.777s
	user    0m0.141s
	sys     0m24.631s

So, we're adding around 11us per syscall, at the benefit of having
only one syscall path.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:12:16 +10:00
Adrian Bunk e6b6e3ffb9 [POWERPC] Remove APUS support from arch/ppc
Current status of APUS:
- arch/powerpc/: removed in 2.6.23
- arch/ppc/: marked BROKEN since 2 years

This therefore removes the remaining parts of APUS support from
arch/ppc, include/asm-ppc, arch/powerpc and include/asm-powerpc.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-17 15:15:04 +10:00
Timur Tabi 82925e76db [POWERPC] 86xx: Fix definition of global-utilites structure
The current definition of struct ccsr_guts in immap_86xx.h was for 85xx.
This patch fixes that and replaces the vague integer types with sized types
of the correct endianness.  The unused struct ccsr_pci is also deleted.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-09-14 08:54:00 -05:00
Timur Tabi dc967d7f5e [POWERPC] add clrsetbits macros
This patch adds the clrsetbits_xxx() macros, which are used to set and clear
multiple bits in a single read-modify-write operation.  Specify the bits to
clear in the 'clear' parameter and the bits to set in the 'set' parameter.
These macros can also be used to set a multiple-bit bit pattern using a mask,
by specifying the mask in the 'clear' parameter and the new bit pattern in the
'set' parameter.  There are big-endian and little-endian versions for 8, 16,
32, and 64 bits.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-09-14 08:53:56 -05:00
Anton Vorontsov 364f8ffc18 [POWERPC] QE: extern par_io_config_pin and par_io_data_set funcs
This is needed to configure and control QE pario pins from the kernel.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-09-14 08:53:49 -05:00
Kumar Gala 748a768384 [POWERPC] Fix modpost warnings from head*.S on ppc32
We get warnings like the following from the various ppc32 head*.S files:

WARNING: vmlinux.o(.text+0x358): Section mismatch: reference to .init.text:early_init (between 'skpinv' and 'interrupt_base')
WARNING: vmlinux.o(.text+0x380): Section mismatch: reference to .init.text:machine_init (between 'skpinv' and 'interrupt_base')
WARNING: vmlinux.o(.text+0x384): Section mismatch: reference to .init.text:MMU_init (between 'skpinv' and 'interrupt_base')
WARNING: vmlinux.o(.text+0x3aa): Section mismatch: reference to .init.text:start_kernel (between 'skpinv' and 'interrupt_base')
WARNING: vmlinux.o(.text+0x3ae): Section mismatch: reference to .init.text:start_kernel (between 'skpinv' and 'interrupt_base')

Added a .text.head section simliar to what other architectures do since
modpost already excludes this from its warnings.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-09-14 08:53:36 -05:00
Kumar Gala 5e14d21e3f [POWERPC] Add cpu feature for SPE handling
Make it so that SPE support can be determined at runtime.  This is similiar
to how we handle AltiVec.  This allows us to have SPE support built in and
work on processors with and without SPE.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-09-14 08:53:30 -05:00
Geert Uytterhoeven 06462d9263 [POWERPC] PS3: Add new LV1 error codes
Add new error codes that may be returned by the LV1 hypervisor

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14 01:33:25 +10:00
Olof Johansson 0d72ba930c [POWERPC] Add workaround for MPICs with broken register reads
Some versions of PWRficient 1682M have an interrupt controller in which
the first register in each pair for interrupt sources doesn't always
read with the right polarity/sense values.

To work around this, keep a software copy of the register instead.  Since
it's not modified from the mpic itself, it's a feasible solution.  Still,
keep it under a config option to avoid wasting memory on other platforms.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14 01:33:25 +10:00
Olof Johansson a416561bf7 [POWERPC] Move lowlevel runlatch calls under cpu feature control
There's no need to call the runlatch on functions on processors that
don't implement them (CPU_FTR_CTRL).

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14 01:33:22 +10:00
Olof Johansson 2e1957fd47 [POWERPC] pasemi: Export more SPRs to sysfs when CONFIG_DEBUG_KERNEL=y
Export some of the implementation-specific registers via sysfs.
Useful when debugging, etc.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14 01:33:21 +10:00
Michael Ellerman 52964f87c6 [POWERPC] Add an optional device_node pointer to the irq_host
The majority of irq_host implementations (3 out of 4) are associated
with a device_node, and need to stash it somewhere. Rather than having
it somewhere different for each host, add an optional device_node pointer
to the irq_host structure.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14 01:33:20 +10:00
Paul Mackerras b2315372ea Merge branch 'linux-2.6' into for-2.6.24 2007-09-14 01:24:25 +10:00
Masato Noguchi b7f90a406f [POWERPC] cell/PS3: Fix a bug that causes the PS3 to hang on the SPU Class 0 interrupt.
The Cell BE Architecture spec states that the SPU MFC Class 0 interrupt
is edge-triggered.  The current spu interrupt handler assumes this
behavior and does not clear the interrupt status.

The PS3 hypervisor visualizes all SPU interrupts as level, and on return
from the interrupt handler the hypervisor will deliver a new virtual
interrupt for any unmasked interrupts which for which the status has not
been cleared.  This fix clears the interrupt status in the interrupt
handler.

Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-11 04:30:36 +10:00
Paul Mackerras 35438c4327 Merge branch 'linux-2.6' into for-2.6.24 2007-08-28 15:56:11 +10:00
Kumar Gala 33d71d26ba [POWERPC] Copy over headers from arch/ppc to arch/powerpc that we need
To build arch/powerpc without including asm-ppc/ we need these files
in asm-powerpc/

Moved some headers under arch/powerpc/platforms if they were only used by
platform or driver files and fixed up the source file includes to match
the new locations

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-08-22 22:43:29 -05:00
Stephen Rothwell 7180e3e636 [POWERPC] Split out iSeries specific exception macros
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-22 16:48:35 +10:00
Stephen Rothwell f9ff0f3048 [POWERPC] Move the exception macros into a header file
It makes head_64.S a bit more readable and will allow us to move the
iSeries exceptions elsewhere.

This also removes the last line of the comment:

 * The following macros define the code that appears as
 * the prologue to each of the exception handlers.  They
 * are split into two parts to allow a single kernel binary
 * to be used for pSeries and iSeries.
 * LOL.  One day... - paulus

Anything is possible. :-)

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-22 16:48:35 +10:00
Stephen Rothwell fc68e8699f [POWERPC] Move iSeries startup code out of head_64.S
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-22 16:48:34 +10:00
Scott Wood 804ace8881 [POWERPC] Use strcasecmp() rather than strncasecmp() when determining device node compatibility
The current code assumes "foo-bar" must always be compatible with a node
compatible with "foo", which breaks device trees where this is not so.

The "case" part is also wrong according to Open Firmware, but it's more
likely to have drivers and/or device trees depending on it, and thus
needs to be handled more carefully.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-22 15:21:47 +10:00
Scott Wood 12cdac34c6 [POWERPC] Add clrbits8 and setbits8
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-22 15:21:47 +10:00
Stephen Rothwell 16a15a30f8 [POWERPC] iSeries: Clean up lparmap mess
We need to have xLparMap in head_64.S so that it is at a fixed address
(because the linker will not resolve (address & 0xffffffff) for us).
But the assembler miscalculates the KERNEL_VSID() expressions.  So put
the confusing expressions into asm-offsets.c.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-22 15:21:46 +10:00
Josh Boyer aab69292e4 [POWERPC] 40x decrementer fixes
Allow generic_calibrate_decr to work for 40x platforms.  Given that the hardware
behavior is identical, this also changes the set_dec function to reload the PIT
on 40x to match the behavior 44x currently has.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-08-20 07:29:11 -05:00
Josh Boyer 4d922c8dc3 [POWERPC] 40x MMU
Add MMU definitions for 40x platforms.  Also fixes two warnings in 40x_mmu.c.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
2007-08-20 07:28:48 -05:00
Becky Bruce 86d7a9a9c4 [POWERPC] Fix FSL BookE machine check reporting
Reserved MCSR bits on FSL BookE parts may have spurious values
when mcheck occurs.  Mask these off when printing the MCSR to
avoid confusion.  Also, get rid of the MCSR_GL_CI bit defined
for e500 - this bit doesn't actually have any meaning.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-08-17 13:22:28 -05:00
Stephen Rothwell e8ff0646e5 [POWERPC] Tidy up CONFIG_PPC_MM_SLICES code
This removes some of the #ifdefs from .c files.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-17 11:01:59 +10:00
Stephen Rothwell 0b8188a44d [POWERPC] Remove get_property and device_is_compatible
They were only needed for backwards compatibility and all in tree uses
have now been changed.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-17 11:01:58 +10:00
Becky Bruce 1ac9f1f71d [POWERPC] Update lmb.h include protection to ASM_POWERPC
This file was protected by _PPC64_LMB_H, which is confusing, as the
32-bit code also uses the lmb these days.  Changed to
_ASM_POWERPC_LMB_H.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-17 11:01:58 +10:00
Segher Boessenkool 9f0cbea0d8 [POWERPC] Implement atomic{, 64}_{read, write}() without volatile
Instead, use asm() like all other atomic operations already do.

Also use inline functions instead of macros; this actually
improves code generation (some code becomes a little smaller,
probably because of improved alias information -- just a few
hundred bytes total on a default kernel build, nothing shocking).

Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-17 11:01:58 +10:00
Linas Vepstas 0f2342c85d [POWERPC] pseries: Eliminate global error_log_cnt variable
Eliminate the use of error_log_cnt as a global var shared across
different directories.  Pass it as a parameter instead.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>

----

Respin of earlier patch, with the CONFIG_PSERIES junk removed from the
header file.

 arch/powerpc/kernel/nvram_64.c         |   10 +++++-----
 arch/powerpc/platforms/pseries/rtasd.c |    7 ++++---
 include/asm-powerpc/nvram.h            |    6 ++++--
 3 files changed, 13 insertions(+), 10 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-17 11:01:52 +10:00
Segher Boessenkool f774216d46 [POWERPC] Replace a few #defines with empty inline functions
...so that GCC doesn't complain about unused variables in the
callers of these.

Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-17 11:01:51 +10:00
Benjamin Herrenschmidt 8f2ea1fd3f [POWERPC] Fix initialization and usage of dma_mask
powerpc has a couple of bugs in the usage of dma_masks that tend to
break when drivers explicitly try to set a 32-bit mask for example.

First, the code that generates the pci devices from the OF device-tree
doesn't initialize the mask properly, then our implementation of
set_dma_mask() was trying to validate the -previous- mask value, not the
one passed in as an argument.

This fixes these problems.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-10 21:04:42 +10:00
Andre Detsch f5996449e3 [POWERPC] cell: Move SPU affinity init to spu_management_of_ops
This patch moves affinity initialization code from spu_base.c to a
new spu_management_of_ops function (init_affinity), which is empty
in the case of PS3. This fixes a linking problem that was happening
when compiling for PS3.
Also, some small code style changes were made.

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-10 21:04:21 +10:00
Michael Neuling 67439b76f2 [POWERPC] Fixes for the SLB shadow buffer code
On a machine with hardware 64kB pages and a kernel configured for a
64kB base page size, we need to change the vmalloc segment from 64kB
pages to 4kB pages if some driver creates a non-cacheable mapping in
the vmalloc area.  However, we never updated with SLB shadow buffer.
This fixes it.  Thanks to paulus for finding this.

Also added some write barriers to ensure the shadow buffer contents
are always consistent.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-03 19:36:01 +10:00
Paul Mackerras c0f7c6cb5d [POWERPC] Expand RPN field to 34 bits when using 64k pages
The real page number field in our PTEs when configured for 64kB pages
is currently 32 bits, which turns out to be not quite enough for the
resources that the eHCA driver wants to map.  This expands the RPN
field to include 2 adjacent, previously-unused bits.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2007-08-03 14:08:24 +10:00
Linus Torvalds 8d4fbcfbe0 Fix WARN_ON() on bitfield ops
Alexey Dobriyan noticed that the new WARN_ON() semantics that were
introduced by commit 684f978347 (to also
return the value to be warned on) didn't compile when given a bitfield,
because the typeof doesn't work for bitfields.

So instead of the typeof trick, use an "int" variable together with a
"!!(x)" expression, as suggested by Al Viro.

To make matters more interesting, Paul Mackerras points out that that is
sub-optimal on Power, but the old asm-coded comparison seems to be buggy
anyway on 32-bit Power if the conditional was 64-bit, so I think there
are more problems there.

Regardless, the new WARN_ON() semantics may have been a bad idea.  But
this at least avoids the more serious complications.

Cc: Alexey Dobriyan <adobriyan@sw.ru>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Al Viro <viro@ftp.linux.org.uk>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2007-07-31 21:12:07 -07:00
Stephane Eranian a583f1b542 remove unused TIF_NOTIFY_RESUME flag
Remove unused TIF_NOTIFY_RESUME flag for all processor architectures.  The
flag was not used excecpt on IA-64 where the patch replaces it with
TIF_PERFMON_WORK.

Signed-off-by: stephane eranian <eranian@hpl.hp.com>
Cc: <linux-arch@vger.kernel.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-31 15:39:38 -07:00
Linus Torvalds 9f5577d815 Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (21 commits)
  [POWERPC] spusched: Fix initial timeslice calculation
  [POWERPC] spufs: Fix incorrect initialization of cbe_spu_info.spus
  [POWERPC] Fix Maple platform ISA bus
  [POWERPC] Make pci_iounmap actually unmap things
  [POWERPC] Add function to check if address is an IO port
  [POWERPC] Fix Pegasos keyboard detection
  [POWERPC] iSeries: Fix section mismatch warning in lpevents
  [POWERPC] iSeries: Fix section mismatch warnings
  [POWERPC] iSeries: We need vio_enable_interrupts
  [POWERPC] Fix RTC and device tree on linkstation machines
  [POWERPC] Add of_register_i2c_devices()
  [POWERPC] Fix loop with unsigned long counter variable
  [POWERPC] Fix register labels on show_regs() message for 4xx/Book-E
  [POWERPC] Only allow building of BootX text support on PPC_MULTIPLATFORM
  [POWERPC] Fix the ability to reset on MPC8544 DS and MPC8568 MDS boards
  [POWERPC] Fix mpc7448hpc2 tsi108 device_type bug
  [POWREPC] Fixup a number of modpost warnings on ppc32
  [POWERPC] Fix ethernet PHY support on MPC8544 DS
  [POWERPC] Don't try to allocate resources for a Freescale POWERPC PHB
  Revert "[POWERPC] Don't complain if size-cells == 0 in prom_parse()"
  ...
2007-07-26 14:00:09 -07:00
Sam Ravnborg 045e72acf1 fix 'dynreloc miscount' link error on Powerpc
Nathan Lynch <ntl@pobox.com> reported:
2.6.23-rc1 breaks the build for 64-bit powerpc for me (using
maple_defconfig):

  LD      vmlinux.o
powerpc64-unknown-linux-gnu-ld: dynreloc miscount for
kernel/built-in.o, section .opd
powerpc64-unknown-linux-gnu-ld: can not edit opd Bad value
make: *** [vmlinux.o] Error 1

However, I see a possibly related binutils patch:
http://article.gmane.org/gmane.comp.gnu.binutils/33650

It was tracked down to be caused by the weak prototype
declaration in mm.h:
__attribute__((weak)) const char *arch_vma_name(struct vm_area_struct *vma);

But there is no need to make the declaration weak - only the definition
needs to be marked weak.  So drop the weak declaration.  And in the process
drop the duplicate definition in page.h for powerpc.

Note: the arch_vma_name fix for x86_64 needs to be applied first to avoid
breaking x86_64

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Nathan Lynch <ntl@pobox.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-26 11:35:18 -07:00
Al Viro 97f1e7f7d2 make powerpc BUG_ON() OK with pointers and bitwise
Since powerpc insists on printing the _value_ of condition
and on casting it to long...  At least let's make it a force-cast.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-26 11:11:57 -07:00
Benjamin Herrenschmidt 6dfbde2091 [POWERPC] Add function to check if address is an IO port
This adds a function that tells you if a given kernel virtual address
is hitting a PCI or ISA IO port permanent mapping or not. This is to
be used in the next patch to fix iomap APIs to properly unmap things.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-26 16:17:47 +10:00
Stephen Rothwell c40b91b59d [POWERPC] iSeries: Fix section mismatch warnings
WARNING: vmlinux.o(.text+0x8124): Section mismatch: reference to .init.text:.iSeries_early_setup (between '.__start_initialization_iSeries' and '.__mmu_off')
WARNING: vmlinux.o(.text+0x8128): Section mismatch: reference to .init.text:.early_setup (between '.__start_initialization_iSeries' and '.__mmu_off')

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-26 16:12:17 +10:00
Stephen Rothwell 56a4c6e31a [POWERPC] iSeries: We need vio_enable_interrupts
Commit 3d0e91f7ac introduced a requirement
for vio_enable_interrupts which iSeires has never needed.  So create a
dummy one.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-26 16:12:17 +10:00
Kumar Gala f64fddbeac [POWERPC] Provide ability to setup P2P bridge registers from struct resource
We need the ability to set P2P bridge registers to properly setup the virtual
P2P bridges that exist in PCIe controllers for some of the embedded setups.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-07-23 22:30:08 -05:00
Kumar Gala 2e56ff206b [POWERPC] Make endianess of cfg_addr for indirect pci ops runtime
Make it so we do a runtime check to know if we need to write cfg_addr
as big or little endian.  This is needed if we want to allow 86xx support
to co-exist in the same kernel as other 6xx PPCs.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-07-23 22:29:09 -05:00
Kumar Gala d5269966e5 [POWERPC] Removed setup_indirect_pci_nomap
We don't use setup_indirect_pci_nomap in arch/powerpc and it appears
the users that needed it from arch/ppc are now using setup_indirect_pci.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-07-23 10:27:08 -05:00
Kumar Gala 62c66c8e55 [POWERPC] Added indirect quirk to handle PCIe PHB that have issue w/no link
Added PPC_INDIRECT_TYPE_NO_PCIE_LINK flag to the indirect pci handling
code to ensure that we don't talk to any device other than the PHB
if we don't have PCIe link.  Some controllers will lockup if they try
to do a config cycle to any device on the bus except the PHB.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-07-23 10:27:07 -05:00
Kumar Gala 38805e5f09 [POWERPC] Add the ability to find PCI capabilities early on
Added early_find_capability that wraps pci_bus_find_capability and uses
fake_pci_bus() to allow us to call it before we've fully setup the
pci_controller.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-07-23 10:27:07 -05:00
Benjamin Herrenschmidt 7fd7218610 [POWERPC] MPIC protected sources
Some HW platforms, such as the new cell blades, requires some MPIC sources
to be left alone by the operating system. This implements support for
a "protected-sources" property in the mpic controller node containing a list
of source numbers to be protected against operating system interference.

For those interested in the gory details, the MPIC on the southbridge of
those blades has some of the processor outputs routed to the cell, and
at least one routed as a GPIO to the service processor. It will be used
in the GA product for routing some of the southbridge error interrupts
to the service processor which implements some of the RAS stuff, such
as checkstopping when fatal errors occurs before they can propagate.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-22 21:30:59 +10:00
Segher Boessenkool 34f329db54 [POWERPC] of_detach_node()'s device node argument cannot be const
...since it modifies it (when it sets the OF_DETACHED flag).

Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-22 21:30:59 +10:00
Christoph Hellwig 486acd4850 [CELL] spufs: rework list management and associated locking
This sorts out the various lists and related locks in the spu code.

In detail:

 - the per-node free_spus and active_list are gone.  Instead struct spu
   gained an alloc_state member telling whether the spu is free or not
 - the per-node spus array is now locked by a per-node mutex, which
   takes over from the global spu_lock and the per-node active_mutex
 - the spu_alloc* and spu_free function are gone as the state change is
   now done inline in the spufs code.  This allows some more sharing of
   code for the affinity vs normal case and more efficient locking
 - some little refactoring in the affinity code for this locking scheme

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20 21:42:28 +02:00
Bob Nelson 1474855d08 [CELL] oprofile: add support to OProfile for profiling CELL BE SPUs
From: Maynard Johnson <mpjohn@us.ibm.com>

This patch updates the existing arch/powerpc/oprofile/op_model_cell.c
to add in the SPU profiling capabilities.  In addition, a 'cell' subdirectory
was added to arch/powerpc/oprofile to hold Cell-specific SPU profiling code.
Exports spu_set_profile_private_kref and spu_get_profile_private_kref which
are used by OProfile to store private profile information in spufs data
structures.

Also incorporated several fixes from other patches (rrn).  Check pointer
returned from kzalloc.  Eliminated unnecessary cast.  Better error
handling and cleanup in the related area.  64-bit unsigned long parameter
was being demoted to 32-bit unsigned int and eventually promoted back to
unsigned long.

Signed-off-by: Carl Love <carll@us.ibm.com>
Signed-off-by: Maynard Johnson <mpjohn@us.ibm.com>
Signed-off-by: Bob Nelson <rrnelson@us.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
2007-07-20 21:42:24 +02:00
Arnd Bergmann 8e68e2f248 [CELL] spufs: extension of spu_create to support affinity definition
This patch adds support for additional flags at spu_create, which relate
to the establishment of affinity between contexts and contexts to memory.
A fourth, optional, parameter is supported. This parameter represent
a affinity neighbor of the context being created, and is used when defining
SPU-SPU affinity.
Affinity is represented as a doubly linked list of spu_contexts.

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20 21:42:15 +02:00
Arnd Bergmann 9d92af621f [CELL] cell: add vicinity information on spus
This patch adds affinity data to each spu instance.
A doubly linked list is created, meant to connect the spus
in the physical order they are placed in the BE. SPUs
near to memory should be marked as having memory affinity.
Adjustments of the fields acording to FW properties is done
in separate patches, one for CPBW, one for Malta (patch for
Malta under testing).

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20 21:42:12 +02:00
Arnd Bergmann aa6d5b2025 [CELL] cell: add per BE structure with info about its SPUs
Addition of a spufs-global "cbe_info" array. Each entry contains information
about one Cell/B.E. node, namelly:
* list of spus (both free and busy spus are in this list);
* list of free spus (replacing the static spu_list from spu_base.c)
* number of spus;
* number of reserved (non scheduleable) spus.

SPE affinity implementation actually requires only access to one spu per
BE node (since it implements its own pointer to walk through the other spus
of the ring) and the number of scheduleable spus (n_spus - non_sched_spus)
However having this more general structure can be useful for other
functionalities, concentrating per-cbe statistics / data.

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20 21:42:11 +02:00
Masato Noguchi 1cfc0f86eb [CELL] spufs: fix decr_status meanings
The decr_status in the LSCSA is confusedly used as two meanings:
 * SPU decrementer was running
 * SPU decrementer was wrapped as a result of adjust
and the code to set decr_status is missing.

This patch fixes these problems by using the decr_status argument as a
set of flags. This requires a rebuild of the shipped spu_restore code.

Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20 21:41:55 +02:00
Andre Detsch 27ec41d3a1 [CELL] spufs: add spu stats in sysfs and ctx stat file in spufs
This patch exports per-context statistics in spufs as long as spu
statistics in sysfs.

It was formed by merging:
"spufs: add spu stats in sysfs"   From: Christoph Hellwig
"spufs: add stat file to spufs"   From: Christoph Hellwig
"spufs: fix libassist accounting" From: Jeremy Kerr
"spusched: fix spu utilization statistics" From: Luke Browning
And some adjustments by myself, after suggestions on cbe-oss-dev.

Having separate patches was making the review process harder
than it should, as we end up integrating spus and ctx statistics
accounting much more than it was on the first implementation.

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20 21:41:50 +02:00
Kazunori Asayama 49776d30ae [CELL] spufs: Avoid unexpectedly restaring MFC during context save
The current SPU context saving procedure in SPUFS unexpectedly
restarts MFC when halting decrementer, because MFC_CNTL[Dh] is set
without MFC_CNTL[Sm]. This bug causes, for example, saving broken DMA
queues. Here is a patch to fix the problem.

Signed-off-by: Kazunori Asayama <asayama@sm.sony.co.jp>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20 21:41:47 +02:00
Andre Detsch 8d2655e621 [CELL] saving spus information for kexec crash
This patch adds support for investigating spus information after a
kernel crash event, through kdump vmcore file.
Implementation is based on xmon code, but the new functionality was
kept independent from xmon.

Signed-off-by: Lucio Jose Herculano Correia <luciojhc@br.ibm.com>
Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20 21:41:43 +02:00
Christian Krafft 813f90728e [CELL] pmi: remove support for mutiple devices.
The pmi driver got simplified by removing support for multiple devices.
As there is no more than one pmi device per maschine, there is no need to
specify the device for listening and sending messages.

This way the caller (cbe_cpufreq) doesn't need to scan the device tree.
When registering the handler on a board without a pmi
interface, pmi.c will just return -ENODEV.

The patch that fixed the breakage of cell_defconfig has been
broken out of the earlier version of this patch. So this is
the version that applies cleanly on top of it.

Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20 21:41:34 +02:00
Stephen Rothwell b41912ca34 Create linux/of_platorm.h
Move common stuff from asm-powerpc/of_platform.h to here and
move the common bits from asm-sparc*/of_device.h here as well.

Create asm-sparc*/of_platform.h and move appropriate parts of
of_device.h to them.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 14:25:22 +10:00
Stephen Rothwell f898f8dbce Begin consolidation of of_device.h
This just moves the common stuff from the arch of_device.h files to
linux/of_device.h.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 13:41:56 +10:00
Stephen Rothwell 1ef4d4242d Consolidate of_find_node_by routines
This consolidates the routines of_find_node_by_path, of_find_node_by_name,
of_find_node_by_type and of_find_compatible_device.  Again, the comparison
of strings are done differently by Sparc and PowerPC and also these add
read_locks around the iterations.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 13:39:06 +10:00
Stephen Rothwell 581b605a83 Consolidate of_find_property
The only change here is that a readlock is taken while the property list
is being traversed on Sparc where it was not taken previously.

Also, Sparc uses strcasecmp to compare property names while PowerPC
uses strcmp.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 13:32:24 +10:00
Stephen Rothwell 0081cbc373 Consolidate of_device_is_compatible
The only difference here is that Sparc uses strncmp to match compatibility
names while PowerPC uses strncasecmp.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 13:29:51 +10:00
Stephen Rothwell 97e873e5c8 Start split out of common open firmware code
This creates drivers/of/base.c (depending on CONFIG_OF) and puts
the first trivially common bits from the prom.c files into it.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 13:28:41 +10:00
Stephen Rothwell 76c1ce7870 Split out common parts of prom.h
This creates linux/of.h and includes asm/prom.h from it.

We also include linux/of.h from asm/prom.h while we transition.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 13:10:22 +10:00
Ralf Baechle c41917df8a [PATCH] sched: sched_cacheflush is now unused
Since Ingo's recent scheduler rewrite which was merged as commit
0437e109e1 sched_cacheflush is unused.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-19 21:28:35 +02:00
Peter Zijlstra b111757c50 arch: personality independent stack top
New arch macro STACK_TOP_MAX it gives the larges valid stack address for the
architecture in question.

It differs from STACK_TOP in that it will not distinguish between
personalities but will always return the largest possible address.

This is used to create the initial stack on execve, which we will move down to
the proper location once the binfmt code has figured out where that is.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ollie Wild <aaw@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:45 -07:00
Fenghua Yu 5fb7dc37dc define new percpu interface for shared data
per cpu data section contains two types of data.  One set which is
exclusively accessed by the local cpu and the other set which is per cpu,
but also shared by remote cpus.  In the current kernel, these two sets are
not clearely separated out.  This can potentially cause the same data
cacheline shared between the two sets of data, which will result in
unnecessary bouncing of the cacheline between cpus.

One way to fix the problem is to cacheline align the remotely accessed per
cpu data, both at the beginning and at the end.  Because of the padding at
both ends, this will likely cause some memory wastage and also the
interface to achieve this is not clean.

This patch:

Moves the remotely accessed per cpu data (which is currently marked
as ____cacheline_aligned_in_smp) into a different section, where all the data
elements are cacheline aligned. And as such, this differentiates the local
only data and remotely accessed data cleanly.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: <linux-arch@vger.kernel.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:44 -07:00
Michael Ellerman 9e367d8592 jprobes: remove JPROBE_ENTRY()
AFAICT now that jprobe.entry is a void *, JPROBE_ENTRY doesn't do anything
useful - so remove it ..

I've left a do-nothing version so that out-of-tree jprobes code will still
compile without modifications.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:44 -07:00
Amit Arora 97ac73506c sys_fallocate() implementation on i386, x86_64 and powerpc
fallocate() is a new system call being proposed here which will allow
applications to preallocate space to any file(s) in a file system.
Each file system implementation that wants to use this feature will need
to support an inode operation called ->fallocate().
Applications can use this feature to avoid fragmentation to certain
level and thus get faster access speed. With preallocation, applications
also get a guarantee of space for particular file(s) - even if later the
the system becomes full.

Currently, glibc provides an interface called posix_fallocate() which
can be used for similar cause. Though this has the advantage of working
on all file systems, but it is quite slow (since it writes zeroes to
each block that has to be preallocated). Without a doubt, file systems
can do this more efficiently within the kernel, by implementing
the proposed fallocate() system call. It is expected that
posix_fallocate() will be modified to call this new system call first
and incase the kernel/filesystem does not implement it, it should fall
back to the current implementation of writing zeroes to the new blocks.
ToDos:
1. Implementation on other architectures (other than i386, x86_64,
   and ppc). Patches for s390(x) and ia64 are already available from
   previous posts, but it was decided that they should be added later
   once fallocate is in the mainline. Hence not including those patches
   in this take.
2. Changes to glibc,
   a) to support fallocate() system call
   b) to make posix_fallocate() and posix_fallocate64() call fallocate()

Signed-off-by: Amit Arora <aarora@in.ibm.com>
2007-07-17 21:42:44 -04:00
Antonino A. Daplas 317b3c2167 fbdev: detect primary display device
Add function helper, fb_is_primary_device().  Given struct fb_info, it will
return a nonzero value if the device is the primary display.

Currently, only the i386 is supported where the function checks for the
IORESOURCE_ROM_SHADOW flag.

Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:11 -07:00
Antonino A. Daplas 10eb2659cc fbdev: move arch-specific bits to their respective subdirectories
Move arch-specific bits of fb_mmap() to their respective subdirectories

[bob.picco@hp.com: efi_range_is_wc is referenced but not declared]
[bunk@stusta.de: fix include/asm-m68k/fb.h]
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:11 -07:00
Tejun Heo 9281acea6a kallsyms: make KSYM_NAME_LEN include space for trailing '\0'
KSYM_NAME_LEN is peculiar in that it does not include the space for the
trailing '\0', forcing all users to use KSYM_NAME_LEN + 1 when allocating
buffer.  This is nonsense and error-prone.  Moreover, when the caller
forgets that it's very likely to subtly bite back by corrupting the stack
because the last position of the buffer is always cleared to zero.

This patch increments KSYM_NAME_LEN by one and updates code accordingly.

* off-by-one bug in asm-powerpc/kprobes.h::kprobe_lookup_name() macro
  is fixed.

* Where MODULE_NAME_LEN and KSYM_NAME_LEN were used together,
  MODULE_NAME_LEN was treated as if it didn't include space for the
  trailing '\0'.  Fix it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Acked-by: Paulo Marques <pmarques@grupopie.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:03 -07:00
Martin Schwidefsky e21ea246bc mm: remove ptep_test_and_clear_dirty and ptep_clear_flush_dirty
Nobody is using ptep_test_and_clear_dirty and ptep_clear_flush_dirty.  Remove
the functions from all architectures.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:22:59 -07:00
Linus Torvalds 489de30259 Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (209 commits)
  [POWERPC] Create add_rtc() function to enable the RTC CMOS driver
  [POWERPC] Add H_ILLAN_ATTRIBUTES hcall number
  [POWERPC] xilinxfb: Parameterize xilinxfb platform device registration
  [POWERPC] Oprofile support for Power 5++
  [POWERPC] Enable arbitary speed tty ioctls and split input/output speed
  [POWERPC] Make drivers/char/hvc_console.c:khvcd() static
  [POWERPC] Remove dead code for preventing pread() and pwrite() calls
  [POWERPC] Remove unnecessary #undef printk from prom.c
  [POWERPC] Fix typo in Ebony default DTS
  [POWERPC] Check for NULL ppc_md.init_IRQ() before calling
  [POWERPC] Remove extra return statement
  [POWERPC] pasemi: Don't auto-select CONFIG_EMBEDDED
  [POWERPC] pasemi: Rename platform
  [POWERPC] arch/powerpc/kernel/sysfs.c: Move NUMA exports
  [POWERPC] Add __read_mostly support for powerpc
  [POWERPC] Modify sched_clock() to make CONFIG_PRINTK_TIME more sane
  [POWERPC] Create a dummy zImage if no valid platform has been selected
  [POWERPC] PS3: Bootwrapper support.
  [POWERPC] powermac i2c: Use mutex
  [POWERPC] Schedule removal of arch/ppc
  ...

Fixed up conflicts manually in:

	Documentation/feature-removal-schedule.txt
	arch/powerpc/kernel/pci_32.c
	arch/powerpc/kernel/pci_64.c
	include/asm-powerpc/pci.h

and asked the powerpc people to double-check the result..
2007-07-16 17:58:08 -07:00
Arnd Bergmann 4b7775870b Introduce compat_u64 and compat_s64 types
One common problem with 32 bit system call and ioctl emulation is the
different alignment rules between i386 and 64 bit machines.  A number of
drivers work around this by marking the compat structures as
'attribute((packed))', which is not the right solution because it breaks
all the non-x86 architectures that want to use the same compat code.

Hopefully, this patch improves the situation, it introduces two new types,
compat_u64 and compat_s64.  These are defined on all architectures to have
the same size and alignment as the 32 bit version of u64 and s64.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Andi Kleen <ak@suse.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Vasily Tarasov <vtaras@openvz.org>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16 09:05:48 -07:00
Jan Beulich 45e98cdb6d page table handling cleanup
Kill pte_rdprotect(), pte_exprotect(), pte_mkread(), pte_mkexec(), pte_read(),
pte_exec(), and pte_user() except where arch-specific code is making use of
them.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16 09:05:36 -07:00
Jan Beulich caa5171622 PCI: remove pci_dac_dma_... APIs
Based on replies to a respective query, remove the pci_dac_dma_...() APIs
(except for pci_dac_dma_supported() on Alpha, where this function is used
in non-DAC PCI DMA code).

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Jesse Barnes <jesse.barnes@intel.com>
Cc: Christoph Hellwig <hch@infradead.org>
Acked-by: David Miller <davem@davemloft.net>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-11 16:02:11 -07:00
Michael Ellerman 575e3348cb PCI: Use a weak symbol for the empty version of pcibios_add_platform_entries()
I'm not sure if this is going to fly, weak symbols work on the compilers I'm
using, but whether they work for all of the affected architectures I can't say.
I've cc'ed as many arch maintainers/lists as I could find.

But assuming they do, we can use a weak empty definition of
pcibios_add_platform_entries() to avoid having an empty definition on every
arch.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-11 16:02:07 -07:00
Paul Mackerras bf22f6fe2d Merge branch 'for-2.6.23' into merge 2007-07-11 13:28:26 +10:00
Brian King 3c0c9e389b [POWERPC] Add H_ILLAN_ATTRIBUTES hcall number
Adds the number for the H_ILLAN_ATTRIBUTES hcall.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-11 13:24:40 +10:00
David Woodhouse 665f5600cb [POWERPC] Enable arbitary speed tty ioctls and split input/output speed
Adding the defines/macros activates the existing code in the tty layer and
allows this platform to use the arbitary speed ioctl setting layer

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-10 22:03:29 +10:00
Tony Breeds bd67fcf9ba [POWERPC] Add __read_mostly support for powerpc
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-10 22:00:56 +10:00
Josh Boyer b6f41cc830 [POWERPC] Consolidate PowerPC 750 cputable features
The 750 CPU_FTR macros have quite a bit of duplication in them.  Consolidate
them to use CPU_FTRS_750 and only list the unique features for derivatives.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-10 21:55:50 +10:00
will schmidt 078f194045 [POWERPC] Oprofile enhanced instruction sampling support
Oprofile enhanced instruction sampling support.

When performing instruction sampling, the mmcra[SLOT] field can be used to
more accurately identify the address of the sampled instruction.

Tested on power4, js20, power5 and power5+.

Signed-off-by: Will Schmidt <will_schmidt@vnet.ibm.com>
cc: Maynard Johnson <maynardj@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-10 21:55:48 +10:00
Michael Ellerman 94a3807c2a [POWERPC] Make the debugfs "powerpc" dir globally accessible
The prom.c debugging code creates a "powerpc" directory in debugfs,
which is nice, but doesn't allow any other debugging code to stick things
under "powerpc" in debugfs. So make it global.

While we're there we should make the prom.c debugging code depend on
CONFIG_DEBUG_FS, because it doesn't work otherwise.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-10 21:53:50 +10:00
Michael Ellerman 6a281856c0 [POWERPC] Add a warning to help trackdown device_node refcounting bugs
When the refcount for a device node goes to 0, we call the
destructor - of_node_release(). This should only happen if we've
already detached the node from the device tree.

So add a flag OF_DETACHED which tracks detached-ness, and if we
find ourselves in of_node_release() without it set, issue a
warning and don't free the device_node. To avoid warning
continuously reinitialise the kref to a sane value.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-10 21:53:47 +10:00
Michael Ellerman d3b814bb1e [POWERPC] Generalise device_node flag interface
The struct device_node currently has a _flags variable, although
it's only used for one flag - OF_DYNAMIC.  Generalise the flag
accessors so we can use them with other flags in future.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-10 21:53:46 +10:00
Vitaly Bordug 80128ff79d [POWERPC] 8xx: mpc885ads pcmcia support
Adds support for PowerQuicc on-chip PCMCIA.  The driver is implemented as
of_device, so only arch/powerpc stuff is capable to use it, which now implies
only mpc885ads reference board.

To cope with the code that should be hooked inside driver, but is really board
specific (like set_voltage), global structure mpc8xx_pcmcia_ops holds
necessary function pointers that are filled in the BSP code.

[akpm@linux-foundation.org: whitespace diddles]
Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Olof Johansson <olof@lixom.net>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-07-10 00:33:51 -05:00
Kumar Gala 74a0ba61b1 [POWERPC] Move inline asm eieio to using eieio inline function
Use the eieio function so we can redefine what eieio does rather
than direct inline asm.  This is part code clean up and partially
because not all PPCs have eieio (book-e has mbar that maps to eieio).

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-07-10 00:33:14 -05:00
Kumar Gala 80a7cc6cf1 [POWERPC] Merge asm-ppc/mmu_context.h into asm-power/mmu_context.h
Just did a directly merge from asm-ppc into asm-powerpc.  This is the last
header that we directly include from asm-powerpc.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-07-03 03:22:05 -05:00
David Gibson 3120234551 [POWERPC] Split out asm-ppc/mmu.h portions for PowerPC 8xx
arch/powerpc still relies on asm-ppc/mmu.h for some 32-bit MMU types.
This patch is another step towards fixing this.  It takes the portions
of asm-ppc/mmu.h related to 8xx embedded CPUs which are still relevant
in arch/powerpc and puts them in a new asm-powerpc/mmu-8xx.h,
included when appropriate from asm-powerpc/mmu.h.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-07-03 03:00:28 -05:00
David Gibson 67f74c9d22 [POWERPC] Split out asm-ppc/mmu.h portions for Freescale Book-E
arch/powerpc still relies on asm-ppc/mmu.h for some 32-bit MMU types.
This patch is another step towards fixing this.  It takes the portions
of asm-ppc/mmu.h related to Freescale Book-E which are still relevant
in arch/powerpc and puts them in a new asm-powerpc/mmu-fsl-booke.h,
included when appropriate from asm-powerpc/mmu.h.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-07-03 03:00:16 -05:00
Christoph Hellwig fe2f896d67 [POWERPC] spufs: Add spu stats in sysfs
Export spu statistics in sysfs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-03 15:24:46 +10:00
Christoph Hellwig e9f8a0b65a [POWERPC] spufs: Add stat file to spufs
Export per-context statistics in spufs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-03 15:24:46 +10:00
Sebastian Siewior be7031773e [POWERPC] spufs: Add bit definition
Add a bit define from book, and replace one hex number with a
symbol, for clarity.

Signed-off-by: Sebastian Siewior <bigeasy@linux.vnet.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-03 15:24:44 +10:00
Olof Johansson 9f7905812e [POWERPC] Uninline and export virq_to_hw() for the pasemi_mac driver
Uninline virq_to_hw and export it so modules can use it. The alternative
would be to export the irq_map array instead, but it's an infrequently
called function, and keeping the array unexported seems considerably
cleaner.

This is needed so that the pasemi_mac driver can be compiled as a module.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-02 13:29:21 +10:00
Kumar Gala a4c9e32827 [POWERPC] Use ppc64 style list management for pci_controller on ppc32
Use the ppc64 style list management and allocation functions for
pci_controllers.  This makes the pci_controller structs just a bit more
common between ppc32 & ppc64.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-06-29 01:58:45 -05:00
Kumar Gala 0b1d40c4d4 [POWERPC] Move pci_bus_to_hose users to pci_bus_to_host
In the places we can move to using pci_bus_to_host, this allows us
to make pci_bus_to_host static and remove its export.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-06-29 01:58:42 -05:00
Kumar Gala dbf8471f52 [POWERPC] Merge ppc32 and ppc64 pcibios_alloc_controller() prototypes
Make the ppc32 pcibios_alloc_controller take a device node to match
the ppc64 prototypes and have it set arch_data.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-06-29 01:58:39 -05:00
Kumar Gala 5516b540e9 [POWERPC] Use global_number in ppc32 pci_controller
Make the pci_controller struct use global_number for the PHB domain number
instead of index to match what ppc64 does and reuse its pci_domain_nr code.

Introduced a pci-common.c to handle shared code between ppc32 & ppc64.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-06-29 01:58:37 -05:00
Kumar Gala 6a506238b3 [POWERPC] Removed dead code related to PCI on ppc32
There are no in kernel users of any off these functions and some of
them were not even EXPORT_SYMBOL:

- pci_bus_io_base()
- pci_bus_io_base_phys()
- pci_bus_mem_base_phys()
- pci_resource_to_bus()
- phys_to_bus()
- pci_phys_to_bus()
- pci_bus_to_phys()
- pci_init_resource()
- resource_fixup()

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-06-29 01:58:35 -05:00
Kumar Gala bf440b712d [POWERPC] Remove local_number from pci_controller
We never actually read local_number so lets just remove it.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-06-29 01:58:34 -05:00
Kumar Gala 5531e41bf4 [POWERPC] Merge asm-ppc/pci-bridge.h into asm-power/pci-bridge.h
Moved bits need for ppc32 from asm-ppc/pci-bridge.h into
asm-powerpc/pci-bridge.h.

Removed ARCH=powerpc specific bits (and comments related to ARCH=ppc)
from asm-ppc/pci-bridge.h as its only used on ARCH=ppc.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-06-29 01:58:31 -05:00
Kumar Gala 7d52c7b0cd [POWERPC] Pass the pci_controller into pci_exclude_device
There are times that we need to know which controller we are on to decide
how to exclude devices properly.  We now pass the pci_controller that we
are going to use down to the pci_exclude_device function. This will
greatly simplify being able to exclude the PHBs in multiple controller
setups.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-06-29 01:57:22 -05:00
Arnd Bergmann 3dfaa762b5 [POWERPC] kill isa_{io,mem}_base definitions for !PCI
When CONFIG_PCI is disabled, the definitions for isa_io_base,
isa_mem_base and pci_dram_offset are entirely unused, but they
can result in link failure because they are defined in multiple
places.

The easiest fix is to just remove all these definitions.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2007-06-29 01:56:43 -05:00
David Woodhouse edd5cd4a94 Introduce fixed sys_sync_file_range2() syscall, implement on PowerPC and ARM
Not all the world is an i386.  Many architectures need 64-bit arguments to be
aligned in suitable pairs of registers, and the original
sys_sync_file_range(int, loff_t, loff_t, int) was therefore wasting an
argument register for padding after the first integer.  Since we don't
normally have more than 6 arguments for system calls, that left no room for
the final argument on some architectures.

Fix this by introducing sys_sync_file_range2(int, int, loff_t, loff_t) which
all fits nicely.  In fact, ARM already had that, but called it
sys_arm_sync_file_range.  Move it to fs/sync.c and rename it, then implement
the needed compatibility routine.  And stop the missing syscall check from
bitching about the absence of sys_sync_file_range() if we've implemented
sys_sync_file_range2() instead.

Tested on PPC32 and with 32-bit and 64-bit userspace on PPC64.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-28 11:38:30 -07:00
David Gibson ea1a734ad7 [POWERPC] Abolish unused ucBoardRev variables
asm-powerpc/processor.h declares, and arch/ppc/platforms/prep_setup.c
defines variables ucBoardRev, ucBoardRevMaj and ucBoardRevMin which
are used nowhere in the current kernel (neither in arch/ppc nor
arch/powerpc).  This removes them.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-28 19:19:29 +10:00
Tony Breeds 71712b4553 [POWERPC] Move iSeries_tb_recal into its own late_initcall.
Currently iSeries will recalibrate the cputime_factors in the first
settimeofday() call.

It seems the reason for doing this is to ensure a resaonable time delta after
time_init().  On current kernels (with udev), this call is made 40-60 seconds
into the boot process, by moving it to a late initcall it is called
approximately 5 seconds after time_init() is called.  This is sufficient to
recalibrate the timebase.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
CC: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-28 19:19:23 +10:00
Geert Uytterhoeven 80071802cb [POWERPC] PS3: Storage Driver Core
Add storage driver core support for the PS3.
PS3 storage devices are a special kind of PS3 system bus device.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-28 19:19:20 +10:00
Geert Uytterhoeven 32d7331852 [POWERPC] PS3: Preallocate bootmem memory for the PS3 FLASH ROM storage driver
Preallocate 256 KiB of bootmem memory for the PS3 FLASH ROM storage driver.
This can be disabled by passing `ps3flash=off' on the kernel command line.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-28 19:18:08 +10:00
Geert Uytterhoeven 9e6b99bd44 [POWERPC] PS3: Frame buffer system-bus rework
Convert the ps3fb device from a platform device to a PS3 system bus device.
Fix the remove and shutdown methods to support kexec and to make ps3fb a
loadable module.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-28 19:16:42 +10:00
Geoff Levand 13a5e30cf7 [POWERPC] PS3: Rework AV settings driver
Make the PS3 ps3av driver a loadable module.
  - Replace static data with kmalloc()'ed.
      o Allocate struct ps3av dynamically, as it contains data used as vuart
        receive/transmit buffers
      o Move static recv_buf from ps3av_do_pkt() to struct ps3av
  - Move ps3av_vuart_{read,write}() from drivers/ps3/ps3av_cmd.c to
    drivers/ps3/ps3av.c and make them static as they're used in that file only.
  - Make device a PS3 system-bus device.
  - Update copyright formatting.
  - Make two new routines ps3av_register_flip_ctl() and ps3av_flip_ctl() to
    support late binding of the frame buffer flip control routine.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-28 19:16:42 +10:00
Geoff Levand 66c63b84b2 [POWERPC] PS3: System manager re-work
PS3 sys-manager updates to reflect the new PS3 unifed device support.
Fixups to the PS3 sys-manager driver to properly support sys_reboot().
 - Add varable request_tag to struct ps3_sys_manager_header.
 - Move ctrl_alt_del from PS3_SM_EVENT_POWER_RELEASED to
   PS3_SM_EVENT_POWER_PRESSED.
 - Make the PS3 sys-manager driver a loadable module.
 - Add new file sys-manager-core.c.
 - Add new struct ps3_sys_manager_ops for dynamic binding.
 - Put data sent to device on stack.
 - Add support for PS3_SM_SERVICE_ID_REQUEST_ERROR.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-28 19:16:41 +10:00
Geoff Levand 7626e78d29 [POWERPC] PS3: Vuart rework
PS3 vuart updates to reflect the new PS3 unified device support.
 - Move vuart devices to the PS3 system bus.
 - Replace use of ps3_vuart_port_device with ps3_system_bus_device.
 - Make the PS3 vuart bus driver a loadable module.
 - Add remove() and shutdown() routines.
 - Move ps3_vuart_work into ps3_vuart_port_priv.tx_list.
 - Remove redundant spinlock ps3_vuart_work.lock.
 - No longer free ps3_vuart_port_device.priv on shutdown.
 - Cleanup Kconfig defs.
 - Export symbols needed for modular port drivers.
 - Arrange to use port numbers found in repository.
 - Fix bugs in ps3_vuart_read_async() and polled reading
 - Cleanup handling of shared interrupt with ps3_vuart_bus_interrupt_get()
   and ps3_vuart_bus_interrupt_put()
 - Add more comments to vuart.c.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-28 19:16:40 +10:00
Geoff Levand 6bb5cf1025 [POWERPC] PS3: System-bus rework
Rework the PS3 system bus to unify device support.
 - DMA region sizes must be a power of two
 - storage bus DMA updates:
  - Small fixes for the PS3 DMA core:
      o fix alignment bug
      o kill superfluous test
      o indentation
      o spelling
      o export ps3_dma_region_{create,free}()
  - ps3_dma_region_init():
      o Add `addr' and `len' parameters, so you can create a DMA region that
        does not cover all memory (use `NULL' and `0' to cover all memory).
	This is needed because there are not sufficient IOMMU resources to have
	all DMA regions cover all memory.
      o Uninline
  - Added remove and shutdown routines to all drivers.
  - Added loadable module support to all drivers.
  - Added HV calls for iopte management (needed by sound driver).

Signed-off-by: MOKUNO Masakazu <mokuno@sm.sony.co.jp>
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-28 19:16:38 +10:00
Masashi Kimoto dc23fba706 [POWERPC] PS3: Add support for HDMI RGB Full Range mode
Add support for HDMI RGB Full Range mode, which is available on system
software 1.80 or newer.

CC: Masashi Kimoto <Masashi_Kimoto@hq.scei.sony.co.jp>
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-28 19:16:35 +10:00
Masakazu Mokuno 1322810c14 [POWERPC] PS3: Compare firmware version
Add a utility routine ps3_compare_firmware_version() to compare system
firmware versions.  Uses the existing ps3_get_firmware_version() routine.

Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-28 19:16:33 +10:00
Sachin P. Sant b7abc5c53e [POWERPC] Fix Kexec/Kdump for power6
On Power machines supporting VRMA, Kexec/Kdump does not work.
VRMA (virtual real-mode area) means that accesses with IR/DR = 0
(i.e. the MMU "off") actually still go through the hash table,
using entries put there by the hypervisor.

This means that when we clear out the hash table on kexec, we need to
make sure these entries are left untouched.

This also adds plpar_pte_read_raw() on the lines of
plpar_pte_remove_raw().

Signed-off-by : Sachin Sant <sachinp@in.ibm.com>
Signed-off-by : Mohan Kumar M <mohan@in.ibm.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Olof Johansson <olof@lixom.net>

Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-25 17:03:33 +10:00
Michael Neuling 4cefebb1b4 [POWERPC] Fix stolen time for SMT without LPAR
For POWERPC, stolen time accounts for cycles lost to the hypervisor or
PURR cycles attributed to the other SMT thread.  Hence, when a PURR is
available, we should still calculate stolen time, irrespective of being
virtualised.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-25 17:03:25 +10:00
Michael Ellerman e3855fa554 [POWERPC] Add for_each_compatible_node()
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-25 17:02:08 +10:00
Michael Ellerman ee51de5645 [POWERPC] Add irq_create_direct_mapping()
This patch adds irq_create_direct_mapping().  This routine is
an alternative to irq_create_mapping(), for irq controllers that
can use linux virq numbers directly as hardware numbers.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-25 17:02:07 +10:00
Olof Johansson 35923f12e4 [POWERPC] Uninline and export virq_to_hw()
Uninline virq_to_hw and export it so modules can use it.  The alternative
would be to export the irq_map array instead, but it's an infrequently
called function, and keeping the array unexported seems considerably
cleaner.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-25 17:02:05 +10:00
Benjamin Herrenschmidt 8dab5241d0 Rework ptep_set_access_flags and fix sun4c
Some changes done a while ago to avoid pounding on ptep_set_access_flags and
update_mmu_cache in some race situations break sun4c which requires
update_mmu_cache() to always be called on minor faults.

This patch reworks ptep_set_access_flags() semantics, implementations and
callers so that it's now responsible for returning whether an update is
necessary or not (basically whether the PTE actually changed).  This allow
fixing the sparc implementation to always return 1 on sun4c.

[akpm@linux-foundation.org: fixes, cleanups]
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: David Miller <davem@davemloft.net>
Cc: Mark Fortescue <mark@mtfhpc.demon.co.uk>
Acked-by: William Lee Irwin III <wli@holomorphy.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16 13:16:16 -07:00
David Gibson 4508dc21fe [POWERPC] Merge CPU features pertaining to icache coherency
Currently the powerpc kernel has a 64-bit only feature,
COHERENT_ICACHE used for those CPUS which maintain icache/dcache
coherency in hardware (POWER5, essentially).  It also has a feature,
SPLIT_ID_CACHE, which is used on CPUs which have separate i and
d-caches, which is to say everything except 601 and Freescale E200.

In nearly all the places we check the SPLIT_ID_CACHE, what we actually
care about is whether the i and d-caches are coherent (which they will
be, trivially, if they're the same cache).

This tries to clarify the situation a little.  The COHERENT_ICACHE
feature becomes availble on 32-bit and is set for all CPUs where i and
d-cache are effectively coherent, whether this is due to special logic
(POWER5) or because they're unified.  We check this, instead of
SPLIT_ID_CACHE nearly everywhere.

The SPLIT_ID_CACHE feature itself is replaced by a UNIFIED_ID_CACHE
feature with reversed sense, set only on 601 and Freescale E200.  In
the two places (one Freescale BookE specific) where we really care
whether it's a unified cache, not whether they're coherent, we check
this feature.  The CPUs with unified cache are so few, we could
consider replacing this feature bit with explicit checks against the
PVR.

This will make unifying the 32-bit and 64-bit cache flush code a
little more straightforward.

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-14 22:30:16 +10:00
David Gibson 8e561e7eda [POWERPC] Kill typedef-ed structs for hash PTEs and BATs
Using typedefs to rename structure types if frowned on by CodingStyle.
However, we do so for the hash PTE structure on both ppc32 (where it's
called "PTE") and ppc64 (where it's called "hpte_t").  On ppc32 we
also have such a typedef for the BATs ("BAT").

This removes this unhelpful use of typedefs, in the process
bringing ppc32 and ppc64 closer together, by using the name "struct
hash_pte" in both cases.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-14 22:30:16 +10:00
David Gibson 9c709f3b62 [POWERPC] Start factoring pgtable-ppc32.h and pgtable-ppc64.h
This factors some things defined in both pgtable-ppc32.h and
pgtable-ppc64.h into the common part of asm-powerpc/pgtable.h.  These
are all things which have essentially identical definitions, and which
by their nature are very unlikely ever to need different definitions
in the two cases.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-14 22:30:15 +10:00
David Gibson f21f49ea63 [POWERPC] Remove the dregs of APUS support from arch/powerpc
APUS (the Amiga Power-Up System) is not supported under arch/powerpc
and it's unlikely it ever will be.  Therefore, this patch removes the
fragments of APUS support code from arch/powerpc which have been
copied from arch/ppc.

A few APUS references are left in asm-powerpc in .h files which are
still used from arch/ppc.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-14 22:30:15 +10:00
David Gibson 90ac19a8b2 [POWERPC] Abolish iopa(), mm_ptov(), io_block_mapping() from arch/powerpc
These old-fashioned IO mapping functions no longer have any callers in
code which remains relevant on arch/powerpc.  Therefore, this removes
them from arch/powerpc.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-14 22:30:15 +10:00
David Gibson 4db68bfe71 [POWERPC] Split out asm-ppc/mmu.h portions for the "classic" hash-based MMU
arch/powerpc still relies on asm-ppc/mmu.h for most 32-bit MMU types.
This is another step towards fixing this.  It takes the portions
of asm-ppc/mmu.h related to the "classic" 32-bit hash page table MMU
which are still relevant in arch/powerpc and puts them in a new
asm-powerpc/mmu-hash32.h, included when appropriate from
asm-powerpc/mmu.h.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-14 22:30:15 +10:00
Jake Moilanen d8c391a559 [POWERPC] Donate idle CPU cycles on dedicated partitions
A Power6 can give up CPU cycles on a dedicated CPU (as opposed to a
shared CPU) to other shared processors if the administrator asks for it
(via the HMC).

This enables that to work properly on P6.

This just involves setting a bit in the CAS structure as well as the
VPA.  To donate cycles, a CPU has to have all SMT threads idle and
have the donate bit set in the VPA.  Then call H_CEDE.

The reason why shared processors just aren't used is because dedicated
CPUs are guaranteed an actual processor, yet the system is still able to
increase the capacity of the shared CPU pool.

Also rename the VPA's cpuctls_task_attrs field to a more accurate name.

Signed-off-by: Jake Moilanen <moilanen@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-14 22:29:58 +10:00
Christoph Hellwig 69d15f6b35 [POWERPC] Consolidate sys_sigaltstack
sys_sigaltstack is the same on 32bit and 64 and we can consolidate it
to signal.c.  The only difference is that the 32bit code uses ints
for the unused register paramaters and 64bit unsigned long.  I've
changed it to unsigned long because it's the same width on 32bit.

(I also wonder who came up with this awkward calling convention.. :))

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-14 22:29:57 +10:00
Benjamin Herrenschmidt 865418d8e7 [POWERPC] Uninline common ptrace bits
This folds back the ptrace-common.h bits back into ptrace.c and removes
that file. The FSL SPE bits from ptrace-ppc32.h are folded back in as
well.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-14 22:29:57 +10:00
Benjamin Herrenschmidt e17666ba48 [POWERPC] ptrace updates & new, better requests
The powerpc ptrace interface is dodgy at best. We have defined our
"own" versions of GETREGS/SETREGS/GETFPREGS/SETFPREGS that strangely
take arguments in reverse order from other archs (in addition to having
different request numbers) and have subtle issue, like not accessing
all of the registers in their respective categories.

This patch moves the implementation of those to a separate function
in order to facilitate their deprecation in the future, and provides
new ptrace requests that mirror the x86 and sparc ones and use the
same numbers:

   PTRACE_GETREGS    : returns an entire pt_regs (the whole thing,
                       not only the 32 GPRs, though that doesn't
                       include the FPRs etc... There's a compat version
                       for 32 bits that returns a 32 bits compatible
                       pt_regs (44 uints)

   PTRACE_SETREGS    : sets an entire pt_regs (the whole thing,
                       not only the 32 GPRs, though that doesn't
                       include the FPRs etc... Some registers cannot be
                       written to and will just be dropped, this is the
                       same as with POKEUSR, that is anything above MQ
                       on 32 bits and CCR on 64 bits. There is a compat
                       version as well.

   PTRACE_GETFPREGS  : returns all the FP registers -including- the FPSCR
                       that is 33 doubles (regardless of 32/64 bits)

   PTRACE_SETFPREGS  : sets all the FP registers -including- the FPSCR
                       that is 33 doubles (regardless of 32/64 bits)

And two that only exist on 64 bits kernels:

   PTRACE_GETREGS64  : Same as PTRACE_GETREGS, except there is no compat
                       function, a 32 bits process will obtain the full 64
                       bits registers

   PTRACE_SETREGS64  : Same as PTRACE_SETREGS, except there is no compat
                       function, a 32 bits process will set the full 64
                       bits registers

The two later ones makes things easier to have a 32 bits debugger on a
64 bits program (or on a 32 bits program that uses the full 64 bits of
the GPRs, which is possible though has issues that will be fixed in a
later patch).

Finally, while at it, the patch removes a whole bunch of code duplication
between ptrace32.c and ptrace.c, in large part by having the former call
into the later for all requests that don't need any special "compat"
treatment.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-14 22:29:56 +10:00
Benjamin Herrenschmidt 3d5134ee83 [POWERPC] Rewrite IO allocation & mapping on powerpc64
This rewrites pretty much from scratch the handling of MMIO and PIO
space allocations on powerpc64.  The main goals are:

 - Get rid of imalloc and use more common code where possible
 - Simplify the current mess so that PIO space is allocated and
   mapped in a single place for PCI bridges
 - Handle allocation constraints of PIO for all bridges including
   hot plugged ones within the 2GB space reserved for IO ports,
   so that devices on hotplugged busses will now work with drivers
   that assume IO ports fit in an int.
 - Cleanup and separate tracking of the ISA space in the reserved
   low 64K of IO space. No ISA -> Nothing mapped there.

I booted a cell blade with IDE on PIO and MMIO and a dual G5 so
far, that's it :-)

With this patch, all allocations are done using the code in
mm/vmalloc.c, though we use the low level __get_vm_area with
explicit start/stop constraints in order to manage separate
areas for vmalloc/vmap, ioremap, and PCI IOs.

This greatly simplifies a lot of things, as you can see in the
diffstat of that patch :-)

A new pair of functions pcibios_map/unmap_io_space() now replace
all of the previous code that used to manipulate PCI IOs space.
The allocation is done at mapping time, which is now called from
scan_phb's, just before the devices are probed (instead of after,
which is by itself a bug fix). The only other caller is the PCI
hotplug code for hot adding PCI-PCI bridges (slots).

imalloc is gone, as is the "sub-allocation" thing, but I do beleive
that hotplug should still work in the sense that the space allocation
is always done by the PHB, but if you unmap a child bus of this PHB
(which seems to be possible), then the code should properly tear
down all the HPTE mappings for that area of the PHB allocated IO space.

I now always reserve the first 64K of IO space for the bridge with
the ISA bus on it. I have moved the code for tracking ISA in a separate
file which should also make it smarter if we ever are capable of
hot unplugging or re-plugging an ISA bridge.

This should have a side effect on platforms like powermac where VGA IOs
will no longer work. This is done on purpose though as they would have
worked semi-randomly before. The idea at this point is to isolate drivers
that might need to access those and fix them by providing a proper
function to obtain an offset to the legacy IOs of a given bus.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-14 22:29:56 +10:00
Linas Vepstas 858955bd57 [POWERPC] Show EEH per-device false positives
Track and report the number of times we read an all-1s value (0xff,
0xffff or 0xffffffff) from each device which is valid data, not
indicating EEH isolation.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>

----
 arch/powerpc/platforms/pseries/eeh.c       |    5 +++++
 arch/powerpc/platforms/pseries/eeh_sysfs.c |    3 +++
 include/asm-powerpc/pci-bridge.h           |    1 +
 3 files changed, 9 insertions(+)
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-14 22:29:55 +10:00
Linas Vepstas e1d04c9769 [POWERPC] Add EEH sysfs blinkenlights
Add sysfs blinkenlights for EEH statistics.  Shuffle the
eeh_add_device_tree() call so that it appears in the correct
sequence.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>

----
 arch/powerpc/platforms/pseries/Makefile    |    2
 arch/powerpc/platforms/pseries/eeh.c       |    4 +
 arch/powerpc/platforms/pseries/eeh_cache.c |    2
 arch/powerpc/platforms/pseries/eeh_sysfs.c |   84 +++++++++++++++++++++++++++++
 arch/powerpc/platforms/pseries/pci_dlpar.c |    7 +-
 include/asm-powerpc/ppc-pci.h              |    3 +
 6 files changed, 98 insertions(+), 4 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-14 22:29:55 +10:00
Linas Vepstas c2e221e8b9 [POWERPC] pseries: asm/pci-bridge.h CONFIG_ minor cleanup
Use the correct CONFIG_ option to mark off the EEH bits.
Move the EEH bits to the bottom of the struct.
The config_space array is used by EEH only; it does not
need to be part of the struct for non-pseries machines.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>

----
Revised patch, per commments from Michael Ellerman.

 include/asm-powerpc/pci-bridge.h |   16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-14 22:29:55 +10:00
Anton Blanchard f341973d9a [POWERPC] Reserve threadinfo flags for perfmon2
Reserve two TIF flags for perfmon2 and shift them into the low 16 bits
so we can use single assembly instructions to create constants based off
them.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-14 22:29:55 +10:00
Akinobu Mita a4c28ab744 [POWERPC] Fix return from pte_alloc_one() in out-of-memory case
pte_alloc_one() is expected to return NULL if out of memory.
But it returns virt_to_page(NULL), which is not NULL.
This fixes it.

Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Akinobu Mita <mita@fixstars.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-02 21:01:56 +10:00
Benjamin Herrenschmidt 6ad8d010b2 [POWERPC] Fix possible access to free pages
I think we have a subtle race on ppc64 with the tlb batching.  The
common code expects tlb_flush() to actually flush any pending TLB
batch.  It does that because it delays all page freeing until after
tlb_flush() is called, in order to ensure no stale reference to
those pages exist in any TLB, thus causing potential access to
the freed pages.

However, our tlb_flush only triggers the RCU for freeing page
table pages, it does not currently trigger a flush of a pending
TLB/hash batch, which is, I think, an error.  This fixes it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-02 21:01:55 +10:00
Alexey Dobriyan e8edc6e03a Detach sched.h from mm.h
First thing mm.h does is including sched.h solely for can_do_mlock() inline
function which has "current" dereference inside. By dealing with can_do_mlock()
mm.h can be detached from sched.h which is good. See below, why.

This patch
a) removes unconditional inclusion of sched.h from mm.h
b) makes can_do_mlock() normal function in mm/mlock.c
c) exports can_do_mlock() to not break compilation
d) adds sched.h inclusions back to files that were getting it indirectly.
e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were
   getting them indirectly

Net result is:
a) mm.h users would get less code to open, read, preprocess, parse, ... if
   they don't need sched.h
b) sched.h stops being dependency for significant number of files:
   on x86_64 allmodconfig touching sched.h results in recompile of 4083 files,
   after patch it's only 3744 (-8.3%).

Cross-compile tested on

	all arm defconfigs, all mips defconfigs, all powerpc defconfigs,
	alpha alpha-up
	arm
	i386 i386-up i386-defconfig i386-allnoconfig
	ia64 ia64-up
	m68k
	mips
	parisc parisc-up
	powerpc powerpc-up
	s390 s390-up
	sparc sparc-up
	sparc64 sparc64-up
	um-x86_64
	x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig

as well as my two usual configs.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-21 09:18:19 -07:00
Stephen Rothwell 3692b9444b [POWERPC] Wire up some more syscalls
signalfd, timerfd and eventfd

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-17 21:11:13 +10:00
David Gibson e3d67b663b [POWERPC] Remove fixup_bigphys_addr() for arch/powerpc to avoid link error
There are no actual implementations of fixup_bigphys_addr() in
arch/powerpc, and with a 64-bit aware ioremap() and so forth, it
should no longer be necessary.  This patch removes the last dregs of
fixup_bigphys_addr() from arch/powerpc.

In fact, the only reason this hasn't caused link errors already is
that nobody must have tried using one of the small number of drivers
using io_remap_pfn_range() on one of the small number of platforms
which are 32-bit but define CONFIG_PHYS_64BIT.  Nonetheless this fixes
a bug, and should go into 2.6.22.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-17 21:11:13 +10:00
James.Yang 3d372548b4 [POWERPC] Remove CPU_FTR_NEED_COHERENT for 7448.
Remove CPU_FTR_NEED_COHERENT for MPC7448 (and single-core MPC86xx).
This prevents needlessly setting M=1 when not SMP.

Signed-off-by: James.Yang <James.Yang@freescale.com>
Acked-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-05-17 21:10:15 +10:00
Becky Bruce f4dcd3c229 [POWERPC] Change include protections to ASM_POWERPC
Change several headers in include/asm-powerpc that currently use some variation
of ASM_PPC to use ASM_POWERPC instead.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-05-17 21:10:15 +10:00
Benjamin Herrenschmidt e1fa2e136f powerpc: fixup hard_irq_disable semantics
This patch renames the raw hard_irq_{enable,disable} into
__hard_irq_{enable,disable} and introduces a higher level hard_irq_disable()
function that can be used by any code to enforce that IRQs are fully disabled,
not only lazy disabled.

The difference with the __ versions is that it will update some per-processor
fields so that the kernel keeps track and properly re-enables them in the next
local_irq_disable();

This prepares powerpc for my next patch that introduces hard_irq_disable()
generically.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-11 08:29:34 -07:00
Stephen Rothwell 04dd08b45b Consolidate asm/poll.h
These files are almost all the same.

This patch could be made even simpler if we don't mind POLLREMOVE turning
up in a few architectures that didn't have it previously (which should be
OK as POLLREMOVE is not used anywhere in the current tree).

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-11 08:29:34 -07:00
Paul Mackerras 2454c7e98c [POWERPC] Fix warning in hpte_decode(), and generalize it
This adds the necessary support to hpte_decode() to handle 1TB
segments and 16GB pages, and removes an uninitialized value
warning on avpn.

We don't have any code to generate HPTEs for 1TB segments or 16GB
pages yet, so this is mostly for completeness, and to fix the
warning.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2007-05-10 21:28:13 +10:00
Geoff Levand 6e66837b26 [POWERPC] PS3: Fix sys manager build error
Fix a PS3 build error when CONFIG_PS3_SYS_MANAGER=n.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-10 21:28:13 +10:00
Linas Vepstas 17213c3bf6 [POWERPC] Assorted janitorial EEH cleanups
Assorted minor cleanups to EEH code; -- use literals, use
kerneldoc format.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>

----
 arch/powerpc/platforms/pseries/eeh.c        |   13 ++++++++++---
 arch/powerpc/platforms/pseries/eeh_driver.c |    7 ++++---
 include/asm-powerpc/ppc-pci.h               |   18 +++++++++++++++---
 3 files changed, 29 insertions(+), 9 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-10 21:28:13 +10:00
Stephen Rothwell 979ee32f7f [POWERPC] We don't define CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
so this declaration is not needed.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-10 21:28:13 +10:00
Stephen Rothwell ab5570f093 [POWERPC] Wire up sys_utimensat
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-10 21:28:12 +10:00
Paul Mackerras 2ecf042ef5 Merge branch 'linux-2.6' 2007-05-10 21:08:37 +10:00
Kumar Gala b99ab6a8c7 [POWERPC] User rheap from arch/powerpc/lib
Removed rheap in arch/ppc/lib and changed build system to use the
one in arch/powerpc/lib.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-05-09 23:28:17 -05:00
Timur Tabi 4c35630ccd [POWERPC] Change rheap functions to use ulongs instead of pointers
The rheap allocation functions return a pointer, but the actual value is based
on how the heap was initialized, and so it can be anything, e.g. an offset
into a buffer.  A ulong is a better representation of the value returned by
the allocation functions.

This patch changes all of the relevant rheap functions to use a unsigned long
integers instead of a pointer.  In case of an error, the value returned is
a negative error code that has been cast to an unsigned long.  The caller can
use the IS_ERR_VALUE() macro to check for this.

All code which calls the rheap functions is updated accordingly.  Macros
IS_MURAM_ERR() and IS_DPERR(), have been deleted in favor of IS_ERR_VALUE().

Also added error checking to rh_attach_region().

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-05-09 23:01:43 -05:00
Becky Bruce 828765269e [POWERPC] Move reg_booke.h to include/asm-powerpc
This patch moves a copy of reg_booke.h to include/asm-powerpc and fixes
up the ifdef protection.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-05-09 23:00:37 -05:00
Linus Torvalds aabded9c3a Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  [POWERPC] Further fixes for the removal of 4level-fixup hack from ppc32
  [POWERPC] EEH: log all PCI-X and PCI-E AER registers
  [POWERPC] EEH: capture and log pci state on error
  [POWERPC] EEH: Split up long error msg
  [POWERPC] EEH: log error only after driver notification.
  [POWERPC] fsl_soc: Make mac_addr const in fs_enet_of_init().
  [POWERPC] Don't use SLAB/SLUB for PTE pages
  [POWERPC] Spufs support for 64K LS mappings on 4K kernels
  [POWERPC] Add ability to 4K kernel to hash in 64K pages
  [POWERPC] Introduce address space "slices"
  [POWERPC] Small fixes & cleanups in segment page size demotion
  [POWERPC] iSeries: Make HVC_ISERIES the default
  [POWERPC] iSeries: suppress build warning in lparmap.c
  [POWERPC] Mark pages that don't exist as nosave
  [POWERPC] swsusp: Introduce register_nosave_region_late
2007-05-09 12:56:01 -07:00
Linus Torvalds 9a9136e270 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (25 commits)
  sound: convert "sound" subdirectory to UTF-8
  MAINTAINERS: Add cxacru website/mailing list
  include files: convert "include" subdirectory to UTF-8
  general: convert "kernel" subdirectory to UTF-8
  documentation: convert the Documentation directory to UTF-8
  Convert the toplevel files CREDITS and MAINTAINERS to UTF-8.
  remove broken URLs from net drivers' output
  Magic number prefix consistency change to Documentation/magic-number.txt
  trivial: s/i_sem /i_mutex/
  fix file specification in comments
  drivers/base/platform.c: fix small typo in doc
  misc doc and kconfig typos
  Remove obsolete fat_cvf help text
  Fix occurrences of "the the "
  Fix minor typoes in kernel/module.c
  Kconfig: Remove reference to external mqueue library
  Kconfig: A couple of grammatical fixes in arch/i386/Kconfig
  Correct comments in genrtc.c to refer to correct /proc file.
  Fix more "deprecated" spellos.
  Fix "deprecated" typoes.
  ...

Fix trivial comment conflict in kernel/relay.c.
2007-05-09 12:54:17 -07:00
Fernando Luis Vazquez Cao 2f4dfe206a Remove hardcoding of hard_smp_processor_id on UP systems
With the advent of kdump, the assumption that the boot CPU when booting an UP
kernel is always the CPU with a particular hardware ID (often 0) (usually
referred to as BSP on some architectures) is not valid anymore.  The reason
being that the dump capture kernel boots on the crashed CPU (the CPU that
invoked crash_kexec), which may be or may not be that particular CPU.

Move definition of hard_smp_processor_id for the UP case to
architecture-specific code ("asm/smp.h") where it belongs, so that each
architecture can provide its own implementation.

Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Cc: "Luck, Tony" <tony.luck@intel.com>
Acked-by: Andi Kleen <ak@suse.de>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09 12:30:48 -07:00
Michael Opdenacker 59c51591a0 Fix occurrences of "the the "
Signed-off-by: Michael Opdenacker <michael@free-electrons.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2007-05-09 08:57:56 +02:00
Hugh Dickins 517e22638c [POWERPC] Don't use SLAB/SLUB for PTE pages
The SLUB allocator relies on struct page fields first_page and slab,
overwritten by ptl when SPLIT_PTLOCK: so the SLUB allocator cannot then
be used for the lowest level of pagetable pages.  This was obstructing
SLUB on PowerPC, which uses kmem_caches for its pagetables.  So convert
its pte level to use normal gfp pages (whereas pmd, pud and 64k-page pgd
want partpages, so continue to use kmem_caches for pmd, pud and pgd).

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-09 16:35:00 +10:00
Benjamin Herrenschmidt f1fa74f4af [POWERPC] Spufs support for 64K LS mappings on 4K kernels
This adds an option to spufs when the kernel is configured for
4K page to give it the ability to use 64K pages for SPE local store
mappings.

Currently, we are optimistic and try order 4 allocations when creating
contexts. If that fails, the code will fallback to 4K automatically.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-09 16:35:00 +10:00
Benjamin Herrenschmidt 16c2d47623 [POWERPC] Add ability to 4K kernel to hash in 64K pages
This adds the ability for a kernel compiled with 4K page size
to have special slices containing 64K pages and hash the right type
of hash PTEs.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-09 16:35:00 +10:00
Benjamin Herrenschmidt d0f13e3c20 [POWERPC] Introduce address space "slices"
The basic issue is to be able to do what hugetlbfs does but with
different page sizes for some other special filesystems; more
specifically, my need is:

 - Huge pages

 - SPE local store mappings using 64K pages on a 4K base page size
kernel on Cell

 - Some special 4K segments in 64K-page kernels for mapping a dodgy
type of powerpc-specific infiniband hardware that requires 4K MMU
mappings for various reasons I won't explain here.

The main issues are:

 - To maintain/keep track of the page size per "segment" (as we can
only have one page size per segment on powerpc, which are 256MB
divisions of the address space).

 - To make sure special mappings stay within their allotted
"segments" (including MAP_FIXED crap)

 - To make sure everybody else doesn't mmap/brk/grow_stack into a
"segment" that is used for a special mapping

Some of the necessary mechanisms to handle that were present in the
hugetlbfs code, but mostly in ways not suitable for anything else.

The patch relies on some changes to the generic get_unmapped_area()
that just got merged.  It still hijacks hugetlb callbacks here or
there as the generic code hasn't been entirely cleaned up yet but
that shouldn't be a problem.

So what is a slice ?  Well, I re-used the mechanism used formerly by our
hugetlbfs implementation which divides the address space in
"meta-segments" which I called "slices".  The division is done using
256MB slices below 4G, and 1T slices above.  Thus the address space is
divided currently into 16 "low" slices and 16 "high" slices.  (Special
case: high slice 0 is the area between 4G and 1T).

Doing so simplifies significantly the tracking of segments and avoids
having to keep track of all the 256MB segments in the address space.

While I used the "concepts" of hugetlbfs, I mostly re-implemented
everything in a more generic way and "ported" hugetlbfs to it.

Slices can have an associated page size, which is encoded in the mmu
context and used by the SLB miss handler to set the segment sizes.  The
hash code currently doesn't care, it has a specific check for hugepages,
though I might add a mechanism to provide per-slice hash mapping
functions in the future.

The slice code provide a pair of "generic" get_unmapped_area() (bottomup
and topdown) functions that should work with any slice size.  There is
some trickiness here so I would appreciate people to have a look at the
implementation of these and let me know if I got something wrong.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-09 16:35:00 +10:00
Linus Torvalds df6d3916f3 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (77 commits)
  [POWERPC] Abolish powerpc_flash_init()
  [POWERPC] Early serial debug support for PPC44x
  [POWERPC] Support for the Ebony 440GP reference board in arch/powerpc
  [POWERPC] Add device tree for Ebony
  [POWERPC] Add powerpc/platforms/44x, disable platforms/4xx for now
  [POWERPC] MPIC U3/U4 MSI backend
  [POWERPC] MPIC MSI allocator
  [POWERPC] Enable MSI mappings for MPIC
  [POWERPC] Tell Phyp we support MSI
  [POWERPC] RTAS MSI implementation
  [POWERPC] PowerPC MSI infrastructure
  [POWERPC] Rip out the existing powerpc msi stubs
  [POWERPC] Remove use of 4level-fixup.h for ppc32
  [POWERPC] Add powerpc PCI-E reset API implementation
  [POWERPC] Holly bootwrapper
  [POWERPC] Holly DTS
  [POWERPC] Holly defconfig
  [POWERPC] Add support for 750CL Holly board
  [POWERPC] Generalize tsi108 PCI setup
  [POWERPC] Generalize tsi108 PHY types
  ...

Fixed conflict in include/asm-powerpc/kdebug.h manually

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:50:19 -07:00
Jeff Dike 5dc12ddee9 Remove tas()
tas() has no users, so get rid of it.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: <linux-arch@vger.kernel.org>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:20 -07:00
Mathieu Desnoyers 6d8944a0d7 local_t: powerpc extension
[akpm@linux-foundation.org: build fixes]
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:20 -07:00
Mathieu Desnoyers 2856f5e31c atomic.h: atomic_add_unless as inline. Remove system.h atomic.h circular dependency
atomic_add_unless as inline. Remove system.h atomic.h circular dependency.
I agree (with Andi Kleen) this typeof is not needed and more error
prone. All the original atomic.h code that uses cmpxchg (which includes
the atomic_add_unless) uses defines instead of inline functions,
probably to circumvent a circular dependency between system.h and
atomic.h on powerpc (which my patch addresses). Therefore, it makes
sense to use inline functions that will provide type checking.

atomic_add_unless as inline. Remove system.h atomic.h circular dependency.
Digging into the FRV architecture shows me that it is also affected by
such a circular dependency. Here is the diff applying this against the
rest of my atomic.h patches.

It applies over the atomic.h standardization patches.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:20 -07:00
Mathieu Desnoyers f46e477ed9 atomic.h: add atomic64 cmpxchg, xchg and add_unless to powerpc
[akpm@linux-foundation.org: build fixes]
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:19 -07:00
Simon Horman 6672f76a5a kdump/kexec: calculate note size at compile time
Currently the size of the per-cpu region reserved to save crash notes is
set by the per-architecture value MAX_NOTE_BYTES.  Which in turn is
currently set to 1024 on all supported architectures.

While testing ia64 I recently discovered that this value is in fact too
small.  The particular setup I was using actually needs 1172 bytes.  This
lead to very tedious failure mode where the tail of one elf note would
overwrite the head of another if they ended up being alocated sequentially
by kmalloc, which was often the case.

It seems to me that a far better approach is to caclculate the size that
the area needs to be.  This patch does just that.

If a simpler stop-gap patch for ia64 to be squeezed into 2.6.21(.X) is
needed then this should be as easy as making MAX_NOTE_BYTES larger in
arch/asm-ia64/kexec.h.  Perhaps 2048 would be a good choice.  However, I
think that the approach in this patch is a much more robust idea.

Acked-by:  Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:07 -07:00
David Brownell c15a3837d2 parport->dev driver model support
Currently a parport_driver can't get a handle on the device node for the
underlying parport (PNPACPI, PCI, etc).  That prevents correct placement of
sysfs child nodes, which can affect things like power management.

This patch adds a field to "struct parport" pointing to that device node, and
updates non-legacy port drivers to initialize that device pointer.  That field
replaces the analagous PCI-only support in parport_pc.

[akpm@linux-foundation.org: fix powerpc build]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:05 -07:00
Christoph Hellwig 1eeb66a1bb move die notifier handling to common code
This patch moves the die notifier handling to common code.  Previous
various architectures had exactly the same code for it.  Note that the new
code is compiled unconditionally, this should be understood as an appel to
the other architecture maintainer to implement support for it aswell (aka
sprinkling a notify_die or two in the proper place)

arm had a notifiy_die that did something totally different, I renamed it to
arm_notify_die as part of the patch and made it static to the file it's
declared and used at.  avr32 used to pass slightly less information through
this interface and I brought it into line with the other architectures.

[akpm@linux-foundation.org: build fix]
[akpm@linux-foundation.org: fix vmalloc_sync_all bustage]
[bryan.wu@analog.com: fix vmalloc_sync_all in nommu]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: <linux-arch@vger.kernel.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:04 -07:00
David Gibson d9b55a0361 [POWERPC] Early serial debug support for PPC44x
This adds support for early serial debugging via the built in
port on IBM/AMCC PowerPC 44x CPUs.  It uses a bolted TLB entry in
address space 1 for the UART's mapping, allowing robust debugging both
before and after the initialization of the MMU.

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-08 14:47:33 +10:00
Michael Ellerman a7de7c7422 [POWERPC] MPIC MSI allocator
To support MSI on MPIC we need a way to reserve and allocate hardware irq
numbers, this patch implements an allocator for that purpose.

New firmware platforms must define a "msi-available-ranges" property on their
MPIC node for MSI to work. For U3/U4 we do a best-guess setup.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-08 13:43:48 +10:00
Michael Ellerman df87ef5508 [POWERPC] PowerPC MSI infrastructure
This provides the architecture specific hooks to support MSI on
powerpc.  We implement the newly added arch_setup_msi_irqs() and
arch_teardown_msi_irqs(), and then delegate to ppc_md routines.

Platforms that don't implement MSI will leave the ppc_md calls blank,
arch_msi_check_device() will detect this and return ENOSYS. Drivers
should detect this error and continue to use LSI.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-08 13:40:31 +10:00
Michael Ellerman f728b5c3a5 [POWERPC] Rip out the existing powerpc msi stubs
Rip out the existing powerpc msi stubs. These were the start of an
implementation based on ppc_md calls, but were never used in mainline.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-08 13:40:31 +10:00
David Gibson d1953c8888 [POWERPC] Remove use of 4level-fixup.h for ppc32
For 32-bit systems, powerpc still relies on the 4level-fixup.h hack,
to pretend that the generic pagetable handling stuff is 3-levels
rather than 4.  This patch removes this, instead using the newer
pgtable-nopmd.h to handle the elision of both the pud and pmd
pagetable levels (ppc32 pagetables are actually 2 levels).

This removes a little extraneous code, and makes it more easily
compared to the 64-bit pagetable code.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-08 13:40:31 +10:00
Paul Mackerras 02bbc0f09c Merge branch 'linux-2.6' 2007-05-08 13:37:51 +10:00
Josh Boyer 05ad6a9159 [POWERPC] Generalize tsi108 PCI setup
Generalize tsi108_setup_pci to take the config space physical address and
primary bus designator as a parameter.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-08 11:54:20 +10:00
Josh Boyer c1b78d05b3 [POWERPC] Generalize tsi108 PHY types
Add a phy_type field to the tsi108 ethernet structures to indicate which PHY
is used on a board.  This is derived from the "compatible" property in the
ethernet-phy node of the device tree.  The default remains the MV88E PHY.

Also, convert the setup code to use of_get_mac_address instead of hard coding
a lookup for the "address" property in the ethernet node.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-08 11:54:20 +10:00
Josh Boyer 08390db07a [POWERPC] Add tsi108_pci.h for common PCI functions
Add a header file for the common PCI routines used for the TSI bridge

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-08 11:54:20 +10:00
Domen Puncer 2e1ee1f766 [POWERPC] mpc52xx suspend to deep-sleep
Implement deep-sleep on MPC52xx.
SDRAM is put into self-refresh with help of SRAM code
(alternatives would be code in FLASH, I-cache).
Interrupt code must also not be in SDRAM, so put it
in I-cache.
MPC52xx core is static, so contents will remain intact even
with clocks turned off.

Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-07 20:31:15 +10:00
Sylvain Munaut de41189bf6 [POWERPC] Export of_device_get_modalias
Apparently other parts of the kernel need to know the
modalias internally (like the sysfs code in macintosh driver).

To avoid consistency issues, we export this code and use it
everywhere it's needed rather than repeat it ...

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-07 20:31:15 +10:00
David Gibson 0aeafb0cef [POWERPC] Kill off the PTE_FMT macro
32-bit powerpc uses a PTE_FMT macro to handle printk() formatting of
PTE entries (which can vary in type and size).  Apparently there was a
good reason for it once, but with current compilers it's simpler just
to workaround the variation with a cast in the printk() itself
(there's only one use).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-07 20:31:14 +10:00
Johannes Berg 7e11580b36 [POWERPC] DART iommu suspend
This implements save and restore hooks for IOMMUs and implements
it the DART iommu.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-07 20:31:14 +10:00
Johannes Berg d9333afd6a [POWERPC] powermac: Support G5 CPU hotplug
This allows "hotplugging" of CPUs on G5 machines.  CPUs that are
disabled are put into an idle loop with the decrementer frequency set
to minimum.  To wake them up again we kick them just like when bringing
them up.  To stop those CPUs from messing with any global state we stop
them from entering the timer interrupt.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-07 20:31:13 +10:00
Johannes Berg 3669e93048 [POWERPC] MPIC sys_device & suspend/resume
This adds mpic to the system devices and implements suspend
and resume for them.  This is necessary to get interrupts for
modules back to where they were before a suspend to disk.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-07 20:31:13 +10:00
Linus Torvalds ea62ccd00f Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (231 commits)
  [PATCH] i386: Don't delete cpu_devs data to identify different x86 types in late_initcall
  [PATCH] i386: type may be unused
  [PATCH] i386: Some additional chipset register values validation.
  [PATCH] i386: Add missing !X86_PAE dependincy to the 2G/2G split.
  [PATCH] x86-64: Don't exclude asm-offsets.c in Documentation/dontdiff
  [PATCH] i386: avoid redundant preempt_disable in __unlazy_fpu
  [PATCH] i386: white space fixes in i387.h
  [PATCH] i386: Drop noisy e820 debugging printks
  [PATCH] x86-64: Fix allnoconfig error in genapic_flat.c
  [PATCH] x86-64: Shut up warnings for vfat compat ioctls on other file systems
  [PATCH] x86-64: Share identical video.S between i386 and x86-64
  [PATCH] x86-64: Remove CONFIG_REORDER
  [PATCH] x86-64: Print type and size correctly for unknown compat ioctls
  [PATCH] i386: Remove copy_*_user BUG_ONs for (size < 0)
  [PATCH] i386: Little cleanups in smpboot.c
  [PATCH] x86-64: Don't enable NUMA for a single node in K8 NUMA scanning
  [PATCH] x86: Use RDTSCP for synchronous get_cycles if possible
  [PATCH] i386: Add X86_FEATURE_RDTSCP
  [PATCH] i386: Implement X86_FEATURE_SYNC_RDTSC on i386
  [PATCH] i386: Implement alternative_io for i386
  ...

Fix up trivial conflict in include/linux/highmem.h manually.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-05 14:55:20 -07:00
Masashi Kimoto 640729014e ps3: Make `ps3videomode -v 0 (auto mode) work again
ps3: Make `ps3videomode -v 0' (auto mode) work again

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-04 17:59:08 -07:00
Geert Uytterhoeven fffe52e86b ps3av: misc updates
ps3av:
  - Move the definition of struct ps3av to ps3av.c, as it's locally used only.
  - Kill ps3av.sem, use the existing ps3av.mutex instead.
  - Make the 512-byte buffer in ps3av_do_pkt() static to reduce stack usage.
    Its use is protected by a semaphore anyway.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-04 17:59:08 -07:00
Geert Uytterhoeven 5caf5db887 ps3av: thread updates
ps3av: Replace the kernel_thread and the ping pong semaphores by a singlethread
workqueue and a completion.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-04 17:59:08 -07:00
Jeremy Fitzhardinge d6dd61c831 [PATCH] x86: PARAVIRT: add hooks to intercept mm creation and destruction
Add hooks to allow a paravirt implementation to track the lifetime of
an mm.  Paravirtualization requires three hooks, but only two are
needed in common code.  They are:

arch_dup_mmap, which is called when a new mmap is created at fork

arch_exit_mmap, which is called when the last process reference to an
  mm is dropped, which typically happens on exit and exec.

The third hook is activate_mm, which is called from the arch-specific
activate_mm() macro/function, and so doesn't need stub versions for
other architectures.  It's called when an mm is first used.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: linux-arch@vger.kernel.org
Cc: James Bottomley <James.Bottomley@SteelEye.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
2007-05-02 19:27:14 +02:00
Christoph Hellwig 9f90b997de [POWERPC] Minor fault path optimization
Call the kprobes pagefault handler directly instead of going through
the complex notifier chain.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-02 20:57:39 +10:00
Srinivasa Ds eb609e52d1 [POWERPC] Transparently handle <.symbol> lookup for kprobes
When data symbols are not present in kernel image, user needs to add
dot(".") before function name explicitly, that he wants to probe in kprobe
module on ppc64.

for ex:-
When data symbols are missing on ppc64,
====================
[root@llm27lp1 ~]# cat /proc/kallsyms | grep do_fork
c00000000006283c T .do_fork
==============================
User needs add "." to "do_fork"

kp.symbol_name = ".do_fork";
============================

This makes kprobe modules unportable.  This fixes the problem.

Signed-off-by: Srinivasa Ds <srinivasa@in.ibm.com>
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-02 20:04:32 +10:00
Geoff Levand dc4f60c25a [POWERPC] PS3: Interrupt routine fixups.
Fixups for the ps3 interrupt routines to support all HV device
in a generic way.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-02 20:04:31 +10:00
Johannes Berg be9c94dd77 [POWERPC] Fix suspend states again
In commit 0fba3a1f39 (a very long time ago,
May 2006), I fixed a bug that caused powermacs to crash when you tried
entering standby/mem suspend states.

As I'm now getting more familiar with the suspend code I notice a few
more things:
 1. we previously misunderstood what pm_ops is for, it isn't supposed to be
    for doing platform dependent suspend/resume stuff that needs to be done
    for suspend to disk (as we currently try to use it!), it is instead for
    entering platform dependent suspend states ("standby", "mem").
 2. due to the first point, we never properly save FPU and altivec states
    when suspending to disk. It probably hasn't hurt yet because the process
    that writes the "disk" to /sys/power/state uses neither and its context
    is used.

This patch addresses these points as follows:
 1. remove all pm_ops from powermac, powermac suspend to ram isn't currently
    usable via /sys/power/state but is done via the PMU instead.
 2. move the code responsible for storing FPU/altivec state into
    save_processor_state and the set_context() call to restore_processor_state.
 3. add a call to kernel_enable_spe()

It may look like there is some code removal missing but that is
actually because the new suspend.h file overrides the ppc/suspend.h
one which was previously used.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-02 20:04:30 +10:00
David Gibson f88df14b1f [POWERPC] Remove arch/powerpc's dependence on asm-ppc/pg{alloc,table}.h
Currently, all 32-bit powerpc platforms use asm-ppc/pgtable.h and
asm-ppc/pgalloc.h, even when otherwise compiled with ARCH=powerpc.
Those asm-ppc files are a fairly nasty tangle of #ifdefs including a
bunch of things which shouldn't be necessary any more in arch/powerpc.

Cleaning up that mess is going to take a while, but this patch is a
first step.  It separates the asm-powerpc/pg{alloc,table}.h into 64
bit and 32 bit versions in asm-powerpc, which the basic .h files in
asm-powerpc select based on config.  We make a few tiny tweaks to the
innards of the files along the way, making the outermost ifdefs
(double-inclusion protection and __KERNEL__) a little cleaner, and
#including asm-generic/pgtable.h from the top-level
asm-powerpc/pgtable.h (since both the old 32-bit and 64-bit versions
ended with such an #include).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-02 20:04:30 +10:00
David Gibson 69d48b409c [POWERPC] Fix STRICT_MM_TYPECHECKS
Since we don't have it active by default, the STRICT_MM_TYPECHECKS
option has bitrotted again.  This patch fixes a couple of simple build
fixes if the option is selected.  First, pud_t mustn't be defined in
page.h on 32-bit systems, because it conflicts with the version in the
generic pud-folding code.  Second, pci_32.c is missing a __pgprot()
wrapper call.  Third, a couple of PS3 files use constants of type
pgprot_t when they need the raw values, we add pgprot_val() calls to
fix this.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-02 20:04:30 +10:00
David Gibson 57d7909e0d [POWERPC] Revise PPC44x MMU code for arch/powerpc
This patch takes the definitions for the PPC44x MMU (a software loaded
TLB) from asm-ppc/mmu.h, cleans them up of things no longer necessary
in arch/powerpc and puts them in a new asm-powerpc/mmu_44x.h file.  It
also substantially simplifies arch/powerpc/mm/44x_mmu.c and makes a
couple of small fixes necessary for the 44x MMU code to build and work
properly in arch/powerpc.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-02 20:04:29 +10:00
Christian Krafft c3e8011ad1 [POWERPC] Uninline of_iomap function
There is no big reason to have that function inlined.

Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-02 20:04:29 +10:00
Mathieu Desnoyers c0b3ae14f1 [POWERPC] Move of_irq_to_resource from prom.h to prom_parse.c
In the powerpc architecture, of_irq_to_resource, currently sitting in
prom.h, needs irq_of_parse_and_map and NO_IRQ from asm-powerpc/irq.h.
The solution suggested by Benjamin Herrenschmidt is to move it to
arch/powerpc/kernel/prom_parse.c.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-02 16:40:55 +10:00
Benjamin Herrenschmidt 0eb2e6019a [POWERPC] pmac_feature_call checks platform
This patch makes sure that a caller of pmac_call_feature() won't try
to call into ppc_md.feature_call of another platform, which might
happen if some powermac drivers are loaded on non-powermac machines.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-02 16:35:01 +10:00
Linus Torvalds 24a77daf3d Merge branch 'for-2.6.22' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'for-2.6.22' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (255 commits)
  [POWERPC] Remove dev_dbg redefinition in drivers/ps3/vuart.c
  [POWERPC] remove kernel module option for booke wdt
  [POWERPC] Avoid putting cpu node twice
  [POWERPC] Spinlock initializer cleanup
  [POWERPC] ppc4xx_sgdma needs dma-mapping.h
  [POWERPC] arch/powerpc/sysdev/timer.c build fix
  [POWERPC] get_property cleanups
  [POWERPC] Remove the unused HTDMSOUND driver
  [POWERPC] cell: cbe_cpufreq cleanup and crash fix
  [POWERPC] Declare enable_kernel_spe in a header
  [POWERPC] Add dt_xlate_addr() to bootwrapper
  [POWERPC] bootwrapper: CONFIG_ -> CONFIG_DEVICE_TREE
  [POWERPC] Don't define a custom bd_t for Xilixn Virtex based boards.
  [POWERPC] Add sane defaults for Xilinx EDK generated xparameters files
  [POWERPC] Add uartlite boot console driver for the zImage wrapper
  [POWERPC] Stop using ppc_sys for Xilinx Virtex boards
  [POWERPC] New registration for common Xilinx Virtex ppc405 platform devices
  [POWERPC] Merge common virtex header files
  [POWERPC] Rework Kconfig dependancies for Xilinx Virtex ppc405 platform
  [POWERPC] Clean up cpufreq Kconfig dependencies
  ...
2007-04-30 08:10:12 -07:00
Paul Mackerras 49e1900d4c Merge branch 'linux-2.6' into for-2.6.22 2007-04-30 12:38:01 +10:00
Johannes Berg d169d14094 [POWERPC] Declare enable_kernel_spe in a header
This patch puts enable_kernel_spe into <asm-powerpc/system.h> along with
enable_kernel_altivec etc.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-30 11:02:05 +10:00
Michael Reiss d5b9049df2 ucc_geth: Implement Transmit on Demand support
Transmit on Demand: Fix spelling in config option, and make it actually enable TOD.

Signed-off-by: Michael Reiss <michael.f.reiss@freescale.com>
Signed-off-by: Michael Barkowski <michael.barkowski@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 11:01:04 -04:00
Linus Torvalds 0278ef8b48 Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: (67 commits)
  [SCSI] SUNESP: Complete driver rewrite to version 2.0
  [SPARC64]: Convert PCI over to generic struct iommu/strbuf.
  [SPARC]: device_node name constification fallout
  [SPARC64]: Convert SBUS over to generic iommu/strbuf structs.
  [SPARC64]: Add generic iommu and strbuf structs to iommu.h
  [SPARC64]: Consolidate {sbus,pci}_iommu_arena.
  [SPARC]: Make device_node name and type const
  [SPARC64]: constify some paramaters of OF routines
  [TIGON3]: of_get_property() returns const.
  [SPARC64]: Fix PCI rework to adhere to of_get_property() const return.
  [SPARC64]: Document and fix calculation of pages_avail.
  [SPARC64]: Make sure pbm->prom_node is setup easly enough in psycho.c
  [SPARC64]: Use bootmem_bootmap_pages() in choose_bootmap_pfn().
  [SPARC64]: Add proper header file extern for cmdline_memory_size.
  [SPARC64]: Kill sparc_ultra_dump_{i,d}tlb()
  [SPARC64]: Use DECLARE_BITMAP and BITS_TO_LONGS in mm/init.c
  [SPARC64]: Give move verbose show_mem() output just like i386.
  [SPARC64]: Mark show_mem() printk's with KERN_INFO.
  [SPARC64]: Kill kvaddr_to_phys() and friends.
  [SPARC64]: Privatize sun4u_get_pte() and fix name.
  ...
2007-04-27 09:29:04 -07:00
Olaf Hering 8d8a0241eb [POWERPC] Generic check_legacy_ioport
check_legacy_ioport makes only sense on PREP, CHRP and pSeries.
They may have an isa node with PS/2, parport, floppy and serial ports.

Remove the check_legacy_ioport call from ppc_md, it's not needed
anymore.  Hardware capabilities come from the device-tree.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-27 21:14:30 +10:00
David Gibson 8d2169e8d6 [POWERPC] Prepare for splitting up mmu.h by MMU type
Currently asm-powerpc/mmu.h has definitions for the 64-bit hash based
MMU.  If CONFIG_PPC64 is not set, it instead includes asm-ppc/mmu.h
which contains a particularly horrible mess of #ifdefs giving the
definitions for all the various 32-bit MMUs.

It would be nice to have the low level definitions for each MMU type
neatly in their own separate files.  It would also be good to wean
arch/powerpc off dependence on the old asm-ppc/mmu.h.

This patch makes a start on such a cleanup by moving the definitions
for the 64-bit hash MMU to their own file, asm-powerpc/mmu_hash64.h.
Definitions for the other MMUs still all come from asm-ppc/mmu.h,
however each MMU type can now be one-by-one moved over to their own
file, in the process cleaning them up stripping them of cruft no
longer necessary in arch/powerpc.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-27 21:14:26 +10:00
David S. Miller ded220bd8f [STRING]: Move strcasecmp/strncasecmp to lib/string.c
We have several platforms using local copies of identical
code.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:54:39 -07:00
Eric Dumazet 92f37fd2ee [NET]: Adding SO_TIMESTAMPNS / SCM_TIMESTAMPNS support
Now that network timestamps use ktime_t infrastructure, we can add a new
SOL_SOCKET sockopt  SO_TIMESTAMPNS.

This command is similar to SO_TIMESTAMP, but permits transmission of
a 'timespec struct' instead of a 'timeval struct' control message.
(nanosecond resolution instead of microsecond)

Control message is labelled SCM_TIMESTAMPNS instead of SCM_TIMESTAMP

A socket cannot mix SO_TIMESTAMP and SO_TIMESTAMPNS : the two modes are
mutually exclusive.

sock_recv_timestamp() became too big to be fully inlined so I added a
__sock_recv_timestamp() helper function.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
CC: linux-arch@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:24:21 -07:00
Eric Dumazet ae40eb1ef3 [NET]: Introduce SIOCGSTAMPNS ioctl to get timestamps with nanosec resolution
Now network timestamps use ktime_t infrastructure, we can add a new
ioctl() SIOCGSTAMPNS command to get timestamps in 'struct timespec'.
User programs can thus access to nanosecond resolution.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
CC: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:24:04 -07:00
Stephen Rothwell 30686ba6d5 [POWERPC] Remove old interface find_devices
Replace uses with of_find_node_by_name and for_each_node_by_name.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24 22:09:02 +10:00
Stephen Rothwell 1658ab6678 [POWERPC] Remove old interface find_type_devices
Replaced by of_find_node_by_type.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24 22:09:01 +10:00
Stephen Rothwell 8c8dc32248 [POWERPC] Remove old interface find_path_device
Replaced by of_find_node_by_path.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24 22:08:59 +10:00
Stephen Rothwell 112466b4d0 [POWERPC] Remove find_all_nodes
This old interface has no more users.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24 22:08:58 +10:00
Stephen Rothwell 4bf56e1725 [POWERPC] Remove find_compatible_devices
This is an old interface and is replaced by of_find_compatible_node.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24 22:08:57 +10:00
David Gibson 6210230725 [POWERPC] Cleanup and fix breakage in tlbflush.h
BenH's commit a741e67969 in powerpc.git,
although (AFAICT) only intended to affect ppc64, also has side-effects
which break 44x.  I think 40x, 8xx and Freescale Book E are also
affected, though I haven't tested them.

The problem lies in unconditionally removing flush_tlb_pending() from
the versions of flush_tlb_mm(), flush_tlb_range() and
flush_tlb_kernel_range() used on ppc64 - which are also used the
embedded platforms mentioned above.

The patch below cleans up the convoluted #ifdef logic in tlbflush.h,
in the process restoring the necessary flushes for the software TLB
platforms.  There are three sets of definitions for the flushing
hooks: the software TLB versions (revised to avoid using names which
appear to related to TLB batching), the 32-bit hash based versions
(external functions) amd the 64-bit hash based versions (which
implement batching).

It also moves the declaration of update_mmu_cache() to always be in
tlbflush.h (previously it was in tlbflush.h except for PPC64, where it
was in pgtable.h).

Booted on Ebony (440GP) and compiled for 64-bit and 32-bit
multiplatform.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24 22:08:56 +10:00
Olof Johansson 687304014f [POWERPC] Save trap number in bad_stack
Save the trap number in the case of getting a bad stack in an exception
handler. It is sometimes useful to know what exception it was that caused
this to happen. Without this, no trap number is reported.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24 22:06:59 +10:00
Michael Ellerman 6cfef5b27e [POWERPC] Rename MPIC_BROKEN_U3 to MPIC_U3_HT_IRQS
Rename MPIC_BROKEN_U3 to something a little more descriptive. Its
effect is to enable support for HT irqs behind the PCI-X/HT bridge on
U3/U4 (aka. CPC9x5) parts.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24 22:06:58 +10:00
David Gibson e58923ed14 [POWERPC] Add arch/powerpc driver for UIC, PPC4xx interrupt controller
This patch adds a driver to arch/powerpc/sysdev for the UIC, the
on-chip interrupt controller from IBM/AMCC 4xx chips.  It uses the new
irq host mapping infrastructure.

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24 21:32:01 +10:00
Ananth N Mavinakayanahalli e6349a958b [POWERPC] kprobes: Eliminate sstep exception if instruction can be emulated
For cases when probes are placed on instructions that can be emulated,
don't take the single-step exception.

Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24 21:31:58 +10:00
Olof Johansson 25fc530eed [POWERPC] pasemi: PA6T oprofile support
Oprofile support for PA6T, kernel side.

Also rename the PA6T_SPRN.* defines to SPRN_PA6T.*.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24 21:31:51 +10:00
Josh Boyer a14c4508f4 [POWERPC] Fix PowerPC 750CL and 750GX CPU features
PowerPC 750CL has high BATs.  The patch below adds a CPU_FTRS_750CL that
includes that.  Without it, the original firmware mappings in the high BATs
aren't cleared which continue to override the linux translations.

It also adds CPU_FTR_COMMON to CPU_FTRS_750GX for completeness.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24 21:31:47 +10:00
Paul Mackerras b142eb3a5a Merge branch 'for-2.6.22' of master.kernel.org:/pub/scm/linux/kernel/git/arnd/cell-2.6 into for-2.6.22 2007-04-24 11:46:09 +10:00
Christian Krafft 6bf05fd776 [POWERPC] add of_iomap function
The of_iomap function maps memory for a given
device_node and returns a pointer to that memory.
This is used at some places, so it makes sense to
a seperate function.

Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23 21:44:40 +02:00
Christian Krafft 91a69c9646 [POWERPC] cell: add cbe_node_to_cpu function
This patch adds code to deal with conversion of
logical cpu to cbe nodes. It removes code that
assummed there were two logical CPUs per CBE.

Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23 21:44:38 +02:00
Arnd Bergmann 57dace2391 [POWERPC] spufs: make spu page faults not block scheduling
Until now, we have always entered the spu page fault handler
with a mutex for the spu context held. This has multiple
bad side-effects:
- it becomes impossible to suspend the context during
  page faults
- if an spu program attempts to access its own mmio
  areas through DMA, we get an immediate livelock when
  the nopage function tries to acquire the same mutex

This patch makes the page fault logic operate on a
struct spu_context instead of a struct spu, and moves it
from spu_base.c to a new file fault.c inside of spufs.

We now also need to copy the dar and dsisr contents
of the last fault into the saved context to have it
accessible in case we schedule out the context before
activating the page fault handler.

Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23 21:18:55 +02:00