Commit graph

1716 commits

Author SHA1 Message Date
Sonic Zhang
8d50de9ee7 Blackfin: SMP: fix cache flush loop
The recent commit (10774912647781) wasn't entirely correct.  While
it fixed some issues, it introduced others.  So pull in the fixes
from the public cache flush functions, and document why we need to
call things directly ourselves.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-04-13 19:34:06 -04:00
Mike Frysinger
0bf02ce605 Blackfin: time-ts: ack gptimer sooner to avoid missing short ints
If the period of a gptimer is fairly low, we might miss an interrupt
by acking it too late (we end up acking the new int as well).

Reported-by: Isabelle Leonardi <i.leonardi@detracom.fr>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-04-13 19:34:05 -04:00
Mike Frysinger
ce24ee468a Blackfin: gptimers: fix thinko when disabling timers
We only want to clear the run bit for this one timer, not all status bits.
So don't read the whole reg and then write all the bits back out.

Reported-by: Isabelle Leonardi <i.leonardi@detracom.fr>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-04-13 19:34:05 -04:00
Graf Yang
943aee0c68 Blackfin: SMP: make all barriers handle cache issues
When suspending/resuming, the common task freezing code will run in
parallel and freeze processes on each core.  This is because the code
uses the non-smp version of memory barriers (as well it should).

The Blackfin smp barrier logic at the moment contains the cache sync
logic, but the non-smp barriers do not.  This is incorrect as Rafel
summarized:
> ...
> The existing memory barriers are SMP barriers too, but they are more
> than _just_ SMP barriers.  At least that's how it is _supposed_ to be
> (eg. rmb() is supposed to be stronger than smp_rmb()).
> ...
> However, looking at the blackfin's definitions of SMP barriers I see
> that it uses extra stuff that should _also_ be used in the definitions
> of the mandatory barriers.
> ...

URL: http://lkml.org/lkml/2011/4/13/11
LKML-Reference: <BANLkTi=F-C-vwX4PGGfbkdTBw3OWL-twfg@mail.gmail.com>
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-04-13 19:34:04 -04:00
Lucas De Marchi
25985edced Fix common misspellings
Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-31 11:26:23 -03:00
Linus Torvalds
6aba74f279 Merge branch 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  avr32: Fix missing irq namespace conversion
  powerpc: qe_ic: Rename get_irq_desc_data and get_irq_desc_chip
  genirq: Remove the now obsolete config options and select statements
  arm: versatile : Fix typo introduced in irq namespace cleanup
  sound: Fixup the last user of the old irq functions
  genirq: Remove obsolete comment
  genirq: Remove now obsolete set_irq_wake()
  sh: Fix irq cleanup fallout
  x86: apb_timer: Fixup genirq fallout
  genirq: Fix misnamed label in handle_edge_eoi_irq

Fix up crazy conflict in arch/powerpc/include/asm/qe_ic.h:

 - commit eead4d5c63 ("powerpc: qe_ic: Rename get_irq_desc_data and
   get_irq_desc_chip") made the helper functions use
   irq_desc_get_handler_data() instead of the legacy (and no longer
   existing) get_irq_desc_data.

 - commit d4db35e8dc ("powerpc/qe_ic: Fix another breakage from the
   irq_data conversion") used irq_desc_get_chip_data() instead.

According to Thomas, the former is the correct direct conversion, but it
does look like both should work (arch/powerpc/sysdev/qe_lib/qe_ic.c
seems to initialize both to the same thing), and the chip data in some
ways is the more logical.  Somebody should really decide on one of the
other.

This merge picks irq_desc_get_handler_data() as the straightforward pure
conversion to new names, as per Thomas.
2011-03-30 09:35:52 -07:00
Linus Torvalds
a8a4492138 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin:
  Blackfin: bitops: fix include order after little endian inclusion
  Blackfin: defconfigs: update after misc devices defaulted to N
  Blackfin: use more standard pr_fmt in the module loader
2011-03-30 07:51:29 -07:00
Thomas Gleixner
78c8982564 genirq: Remove the now obsolete config options and select statements
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-03-30 14:13:23 +02:00
Thomas Gleixner
28a283aae3 bfin: Use proper accessors in trace
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-03-29 14:47:59 +02:00
Thomas Gleixner
43f2f1154a bfin: Convert irq namespace
Convert to the new function names. Scripted with coccinelle.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: uclinux-dist-devel@blackfin.uclinux.org
2011-03-29 14:47:59 +02:00
Thomas Gleixner
1907d8be2d bfin: Final irq cleanup
Use the trigger type in irq_data and check level type instead of
looking at desc->handle_irq.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: uclinux-dist-devel@blackfin.uclinux.org
2011-03-29 14:47:59 +02:00
Mike Frysinger
92a19d66a3 Blackfin: bitops: fix include order after little endian inclusion
The le.h header requires things like test_bit to be declared, so we need
to move its inclusion to after the point where that happens.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-25 16:54:13 -04:00
Mike Frysinger
901c23fb18 Blackfin: defconfigs: update after misc devices defaulted to N
The default value for misc devices was changed from Y to N which
causes problems for mini defconfigs that were relying on this
defaulting to Y.  So update all of the defconfigs accordingly.

Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-25 16:54:12 -04:00
Joe Perches
b75a9e6bfb Blackfin: use more standard pr_fmt in the module loader
Changed pr_fmt(fmt) to make the format arguments match the format.
Changed an argument name in apply_relocate from me to mod so that
the pr_err is consistent with the other uses.
Added missing '\n' to a format.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-25 16:54:12 -04:00
Linus Torvalds
05061bf678 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin:
  Blackfin: bf54x: re-enable anomaly 05000353 for all revs
  Blackfin: enable atomic64_t support
  Blackfin: wire up new syncfs syscall
  Blackfin: SMP: flush CoreB cache when shutting down
2011-03-24 08:24:28 -07:00
Akinobu Mita
61f2e7b0f4 bitops: remove minix bitops from asm/bitops.h
minix bit operations are only used by minix filesystem and useless by
other modules.  Because byte order of inode and block bitmaps is different
on each architecture like below:

m68k:
	big-endian 16bit indexed bitmaps

h8300, microblaze, s390, sparc, m68knommu:
	big-endian 32 or 64bit indexed bitmaps

m32r, mips, sh, xtensa:
	big-endian 32 or 64bit indexed bitmaps for big-endian mode
	little-endian bitmaps for little-endian mode

Others:
	little-endian bitmaps

In order to move minix bit operations from asm/bitops.h to architecture
independent code in minix filesystem, this provides two config options.

CONFIG_MINIX_FS_BIG_ENDIAN_16BIT_INDEXED is only selected by m68k.
CONFIG_MINIX_FS_NATIVE_ENDIAN is selected by the architectures which use
native byte order bitmaps (h8300, microblaze, s390, sparc, m68knommu,
m32r, mips, sh, xtensa).  The architectures which always use little-endian
bitmaps do not select these options.

Finally, we can remove minix bit operations from asm/bitops.h for all
architectures.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Michal Simek <monstr@monstr.eu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-23 19:46:22 -07:00
Akinobu Mita
f312eff816 bitops: remove ext2 non-atomic bitops from asm/bitops.h
As the result of conversions, there are no users of ext2 non-atomic bit
operations except for ext2 filesystem itself.  Now we can put them into
architecture independent code in ext2 filesystem, and remove from
asm/bitops.h for all architectures.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-23 19:46:21 -07:00
Akinobu Mita
861b5ae7cd bitops: introduce little-endian bitops for most architectures
Introduce little-endian bit operations to the big-endian architectures
which do not have native little-endian bit operations and the
little-endian architectures.  (alpha, avr32, blackfin, cris, frv, h8300,
ia64, m32r, mips, mn10300, parisc, sh, sparc, tile, x86, xtensa)

These architectures can just include generic implementation
(asm-generic/bitops/le.h).

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Mikael Starvik <starvik@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Matthew Wilcox <willy@debian.org>
Cc: Grant Grundler <grundler@parisc-linux.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Chris Zankel <chris@zankel.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Acked-by: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-23 19:46:15 -07:00
Mike Frysinger
de55aa33ca Blackfin: bf54x: re-enable anomaly 05000353 for all revs
Even though the anomaly sheet says that the the bootrom is fixed, tests
have shown that the fix itself does not handle all cases.  So until we
get a ROM update, assume the reset code is still broken and we need to
handle things ourselves.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-22 21:06:16 -04:00
Mike Frysinger
bee18bebda Blackfin: enable atomic64_t support
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-22 21:03:17 -04:00
Mike Frysinger
4e3d96deff Blackfin: wire up new syncfs syscall
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-22 21:03:16 -04:00
Graf Yang
1e924e2f1e Blackfin: SMP: flush CoreB cache when shutting down
When CoreB wakes up, it needs to read variables that CoreA might have
modified, and might be in CoreB's cache.  So kill CoreB's cache before
going to sleep so that when we wake up, we are in a coherent state.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-22 21:03:16 -04:00
Mike Frysinger
0c082bd158 Blackfin: ip0x: fix unused variable warning
The previous commit that changed this code to the common GPIO layers
forgot to delete the local and now unused "i" variable.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 05:17:02 -04:00
Mike Frysinger
58ee0d3bb1 Blackfin: punt unused HDMA masks
No code uses these, and the short define names are polluting the global
namespace where they collide with things like common irq files.  So just
punt the damned things.  If in the future we need HDMA support, we can
make a standalone header for these things.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:29:17 -04:00
Mike Frysinger
a8d0142fb7 Blackfin: wire up new syscalls
Hook up name_to_handle_at, open_by_handle_at, and clock_adjtime.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:05:25 -04:00
Philippe Gerum
1353d050fa Blackfin/ipipe: restore pipeline bits in irqflags
This patch fixes the Blackfin irqflags to make them I-pipe aware anew,
after the introduction of the hard_local_irq_*() API.

Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:11 -04:00
Philippe Gerum
9169b51f8c Blackfin/ipipe: fix deferred pipeline sync for the root stage
This patch makes sure to sync the pipeline for the root stage only
from the outer interrupt level, when resuming kernel code after an
interrupt.

This fixes a bug causing EVT15 to be spuriously popped off upon nested
interrupts, which in turn would cause the preempted kernel code to
resume without supervisor privileges.

Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:11 -04:00
Philippe Gerum
5b5da4c4b8 Blackfin/ipipe: upgrade to I-pipe mainline
This patch introduces Blackfin-specific bits to support the current
tip of the interrupt pipeline development, mainly:

- 2/3-level interrupt maps (sparse IRQs)
- generic virq handling
- sysinfo v2 format for ipipe_get_sysinfo()

Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:10 -04:00
Michael Hennerich
8944b5a258 Blackfin: cpufreq: fix typos
No functional changes here.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:10 -04:00
Thomas Gleixner
1eb5efa0e4 Blackfin: enable GENERIC_HARDIRQS_NO_DEPRECATED
All chips converted.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:09 -04:00
Mike Frysinger
91796c235d Blackfin: SMP: convert to irq chip functions
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:09 -04:00
Thomas Gleixner
9f51a874ce Blackfin: use accessor functions in show_interrupts()
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:08 -04:00
Thomas Gleixner
bc2f6bd802 Blackfin: use proper wrapper functions for modifying irq status
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:08 -04:00
Thomas Gleixner
e9502850b9 Blackfin: convert gpio irq_chip to new functions
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:07 -04:00
Thomas Gleixner
172d2d1d84 Blackfin: convert mac irq_chip to new functions
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:07 -04:00
Thomas Gleixner
dabf64bcc5 Blackfin: convert error irq_chip to new functions
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:06 -04:00
Thomas Gleixner
ff43a67f67 Blackfin: convert internal irq_chip to new functions
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:06 -04:00
Thomas Gleixner
4f19ea4978 Blackfin: convert core irq_chip to new functions
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:05 -04:00
Thomas Gleixner
b10bbbbce7 Blackfin: use proper wrappers for irq_desc
Fixup the open coded access to irq_desc and use the proper wrappers.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:05 -04:00
Mike Frysinger
511cdcc500 Blackfin: optimize startup code
Take advantage of more Blackfin-specific insns, and only initialize
registers required by the ABI.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:04 -04:00
Sonic Zhang
c6345ab1a3 Blackfin: SMP: work around anomaly 05000491
In order to safely work around anomaly 05000491, we have to execute IFLUSH
from L1 instruction sram.  The trouble with multi-core systems is that all
L1 sram is visible only to the active core.  So we can't just place the
functions into L1 and call it directly.  We need to setup a jump table and
place the entry point in external memory.  This will call the right func
based on the active core.

In the process, convert from the manual relocation of a small bit of code
into Core B's L1 to the more general framework we already have in place
for loading arbitrary pieces of code into L1.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:04 -04:00
Graf Yang
6f546bc3ac Blackfin: SMP: implement cpu_freq support
Re-use some of the existing cpu hotplugging code in the process.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:03 -04:00
Mike Frysinger
820b127dae Blackfin: split optimization settings more
We need to place icache flush funcs into L1 inst sram to work around a
hardware anomaly.  But this currently breaks SMP support as the L1 inst
sram is per-core and cannot be called directly.  So in preparation for
making that work, split the two options.

Further, split out the SMP depend so that we can allow some for SMP.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:03 -04:00
Sonic Zhang
567ebfc99d Blackfin: SMP: disable preempt with smp_processor_id to send messages
The smp_processor_id() API requires that preempt be disabled when calling
it, so make sure it is when we go to send messages to other processors.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:02 -04:00
steven miao
ab61d2ac5c Blackfin: SMP: delay enabling caches until CPU is initialized
Defer bfin_setup_caches(cpu) to avoid unexpected faults due to the cpu
state not yet being fully initialized.

Signed-off-by: steven miao <realmz6@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:02 -04:00
Mike Frysinger
5f362c91d0 Blackfin: SMP: use standard cache functions
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:01 -04:00
steven miao
ef9d8c251a Blackfin: SMP: PERCPU section should be PAGE aligned
Common code checks the alignment of some of the variables and calls BUG()
if they aren't page aligned.

Signed-off-by: steven miao <realmz6@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 04:01:01 -04:00
Mike Frysinger
d6b435be4b Blackfin: ADI boards: enable pseudo debug insns support
We use these insns when testing, so enable them by default for all
of our development boards.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 03:49:26 -04:00
Sonic Zhang
cdb92f6794 Blackfin: kgdb: drop dead KGDB_THR_PROC_SWAP for SMP systems
Common code no longer defines this, so stop using it.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 03:49:26 -04:00
Andreas Schallenberg
adfe6a4882 Blackfin: dnp5370: drop MMC card detect support
The board doesn't actually have a pin hooked up to do card detection,
so punt the code for it.

Signed-off-by: Andreas Schallenberg <Andreas.Schallenberg@3alitydigital.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18 03:49:25 -04:00