Commit Graph

1091 Commits

Author SHA1 Message Date
Mike Frysinger
ce0bf52dd3 Blackfin: fix unused warnings after nommu update
The massive nommu update (8feae131) left the local variable "vml" unused,
so punt it.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:15:35 -04:00
Robin Getz
81f7f45606 Blackfin: export the last exception cause via debugfs
We have some test code that runs in userspace that exercises the exception
handling of the Blackfin pretty thoroughly.  Part of the validation process
is checking the exact exception triggered, so export the last one seen to
userspace via debugfs when debugging is enabled for the test code to check.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:15:28 -04:00
Roel Kluin
0a99061426 Blackfin: fix length checking in kgdb_ebin2mem
The kgdb_ebin2mem() was decrementing the count variable to do parsing, but
then later still tries to use it based on its original meaning.  So leave
it untouched and use a different variable to walk the memory.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:12:07 -04:00
Mike Frysinger
11aca0e735 Blackfin: kgdb: fix up error return values
The Blackfin kgdb code was all passing back positive errno values when it
really should have been using negative errno values.

Reported-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:12:06 -04:00
Mike Frysinger
a43b739f25 Blackfin: push access_ok() L1 attribute down
There is no need for the L1 attribute to be on the prototype of the
access_ok() function as all consumers of the function do not care where it
lives -- they'll always use pcrel calls to get to it.  This prevents
pointless recompiles of most of the system when this config option changes.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:12:05 -04:00
Mike Frysinger
8d0d8f2a3a Blackfin: punt duplicated search_exception_table() prototype
The common code already has a prototype for this function and we don't use
it anywhere in the Blackfin code, so punt it from the Blackfin headers.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:12:03 -04:00
Robin Getz
a8372b5ca6 Blackfin: add missing access_ok() checks to user functions
The core string/clear user functions weren't checking the user pointers
which caused kernel crashes with some bad programs and tests (like LTP).

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:12:02 -04:00
Mike Frysinger
685a694f06 Blackfin: convert early_printk EVT init to a loop
The EVT registers are all contiguous in the memory map, so using a loop to
initialize them all rather than hardcoding the list results in much better
generated code (a hardware loop rather than a whole bunch of individual
loads).

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:12:01 -04:00
Mike Frysinger
f1db88d2a7 Blackfin: document the lsl variants of the L1 allocator
Make sure the meaning of "lsl" is covered somewhere and it is clear why we
somewhat duplicate the sram alloc/free functions.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:12:00 -04:00
Mike Frysinger
595d681f2c Blackfin: rename Blackfin relocs according to the toolchain
The latest Blackfin toolchain has fixed its relocation scheme to match
other ports: always use R_BFIN_ prefix and capitalize everything.  This
brings the kernel in line with those fixes.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:59 -04:00
Mike Frysinger
780172bf87 Blackfin: check SIC defines rather than variant names
Rather than having to maintain a hard coded list of Blackfin variants, use
the SIC defines themselves.  This fixes build problems on BF51x/BF538 under
some configurations as they were missing from one of the lists.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:58 -04:00
Sonic Zhang
ea8538a039 Blackfin: add SSYNC to set_dma_sg() for descriptor fetching
Make sure the internal core buffers are flushed before telling the DMA
engine to fetch the descriptor structure so that it gets the right values.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:57 -04:00
Graf Yang
9b9bfded62 Blackfin: convert SMP to only use generic time framework
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:56 -04:00
Michael Hennerich
ffc4d8bc44 Blackfin: bf548-ezkit/bf537-stamp: add resources for ADXL345/346
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:55 -04:00
Mike Frysinger
79df1b6947 Blackfin: override default uClinux MTD addr/size
Due to a processor anomaly (05000263 to be exact), most Blackfin parts
cannot keep the embedded filesystem image directly after the kernel in
RAM.  Instead, the filesystem needs to be relocated to the end of memory.
As such, we need to tweak the map addr/size during boot for Blackfin
systems.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:53 -04:00
Mike Frysinger
37082511f0 Blackfin: fix command line corruption with DEBUG_DOUBLEFAULT
Commit 6b3087c6 (which introduced Blackfin SMP) broke command line passing
when the DEBUG_DOUBLEFAULT config option was enabled.  Switch the code to
using a scratch register and not R7 which holds the command line.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:52 -04:00
Graf Yang
89ecd50691 Blackfin: fix handling of initial L1 reservation
This restores some L1 reservation logic that was lost during the Blackfin
SMP merge.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:51 -04:00
Graf Yang
c72aa0794a Blackfin: merge sram init functions
Now that the sram_init() function exists only to call the bfin_sram_init()
after the punting of the reserve_pda() function, simply merge the two to
avoid pointless overhead.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:50 -04:00
Graf Yang
d1800fe0e5 Blackfin: drop unused reserve_pda() function
The Per-processor Data Area isn't actually reserved by this function, and
all it ended up doing was issuing a printk(), so punt it.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:49 -04:00
Michael Hennerich
c8d5ea8ccb Blackfin: update gptimers API
First we fix the prototypes for functions that return boolean values by
using "int" rather than "uint16_t".  Then we introduce a get_gptimer_run()
function for checking the current run status of a timer, and then we add a
disable_gptimers_sync() function which parallels disable_gptimers() with
corresponding normal "_sync" behavior.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:47 -04:00
Robin Getz
9ba3c24f10 Blackfin: include system/processor info in dump messages
People often copy & paste crash messages without surrounding context, so
include common useful information like system/processor stats in the crash
summary.  This should smooth over the report/test cycle a bit more.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:47 -04:00
Robin Getz
0acad8dfee Blackfin: add workaround for anomaly 05000461
Returning too fast with a bad RETI can trigger false errors.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:46 -04:00
Robin Getz
a0cab65642 Blackfin: make sure stack is accessible before dumping it
When displaying a crash dump, make sure accessing the stack is safe so
we don't crash at the same time.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:45 -04:00
Robin Getz
b9a3899d59 Blackfin: make deferred hardware errors more exact
Hardware errors on the Blackfin architecture are queued by nature of the
hardware design.  Things that could generate a hardware level queue up at
the system interface and might not process until much later, at which
point the system would send a notification back to the core.

As such, it is possible for user space code to do something that would
trigger a hardware error, but have it delay long enough for the process
context to switch.  So when the hardware error does signal, we mistakenly
evaluate it as a different process or as kernel context and panic (erp!).
This makes it pretty difficult to find the offending context.  But wait,
there is good news somewhere.

By forcing a SSYNC in the interrupt entry, we force all pending queues at
the system level to be processed and all hardware errors to be signaled.
Then we check the current interrupt state to see if the hardware error is
now signaled.  If so, we re-queue the current interrupt and return thus
allowing the higher priority hardware error interrupt to process properly.
Since we haven't done any other context processing yet, the right context
will be selected and killed.  There is still the possibility that the
exact offending instruction will be unknown, but at least we'll have a
much better idea of where to look.

The downside of course is that this causes system-wide syncs at every
interrupt point which results in significant performance degradation.
Since this situation should not occur in any properly configured system
(as hardware errors are triggered by things like bad pointers), make it a
debug configuration option and disable it by default.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:44 -04:00
Mike Frysinger
97b070c8e7 Blackfin: add note about anomaly 05000242 being worked around
Document anomaly 05000242 workaround in source code.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:42 -04:00
Graf Yang
5ba766752d Blackfin: work around anomaly 05000220
When possible, work around anomaly 05000220 (external memory is write
back cached, but L2 is not cached).  If not possible, detect the
conditions at build time and reject any qualifying configurations.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:41 -04:00
Mike Frysinger
a261eec000 Blackfin: rename some Blackfin drivers
Try to keep the naming conventions consistent, so:
	SPI_ADC_BF533 -> BFIN_SPI_ADC
	TWI_LCD       -> BFIN_TWI_LCD

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:41 -04:00
Robin Getz
a17c7f6f5b Blackfin: make sure MPU CPLB for first 1k is marked as valid
This way we properly catch and kill applications that jump to a NULL ptr.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:40 -04:00
Graf Yang
8af7ffa0d5 Blackfin: add workaround for anomaly 05000287
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:39 -04:00
Graf Yang
1fa9be72b5 Blackfin: add support for gptimer0 as a tick source
For systems where the core cycles are not a usable tick source (like SMP
or cycles gets updated), enable gptimer0 as an alternative.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:37 -04:00
Graf Yang
555487bbb6 Blackfin: annotate anomaly 05000120
Add some notes for anomaly 05000120 to make sure we work around it.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:36 -04:00
Graf Yang
ee0263cc2e Blackfin: BF518F-EZBRD: handle required portmuxing of async pins
The two high address lines on the BF51x are not dedicated which means we
need to handle them like any other peripheral pin if we want to access the
upper 2MB of parallel flash.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:35 -04:00
Sonic Zhang
7f3aee3c18 Blackfin: detect anomaly 05000274
Detect and reject operating conditions for anomaly 05000274 since the
problem cannot be worked around in software.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:35 -04:00
Mike Frysinger
d8804adf52 Blackfin: do not append newlines to panic() messages
The panic() function already handles newlines for us.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:34 -04:00
Mike Frysinger
729a3fa733 Blackfin: workaround anomaly 05000227
Workaround anomaly 05000227 by only using the scratch pad for stack when
absolutely necessary.  The core code which reprograms clocks really only
touches MMRs directly with constants.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:32 -04:00
Mike Frysinger
a9031028ef Blackfin: delete unused sys_getpagesize() function
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:31 -04:00
Graf Yang
e522c8466d Blackfin: work around anomaly 05000287
Make sure we work around anomaly 05000287 by configuring different port
preferences for the data cache.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:31 -04:00
Mike Frysinger
a9a59e3096 Blackfin: punt useless GPIO init call
This init code existed only to dump a printk(), and not even a useful one.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:30 -04:00
Robin Getz
76068c3c5d Blackfin: annotate anomaly 05000119 in core DMA code
Add a reminder note to avoid the DMA_DONE bit in our DMA core code.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:29 -04:00
Robin Getz
bc4d6f36db Blackfin: document anomaly 05000234 workaround
Note the reason for using CHIPD over DSPID.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:28 -04:00
Robin Getz
fecbd7366b Blackfin: fix early L1 relocation crash
Our early L1 relocate code may implicitly call code which lives in L1
memory.  This is due to the dma_memcpy() rewrite that made the DMA code
lockless and safe to be used by multiple processes.  If we start the
early DMA memcpy to relocate things into L1 instruction but then our
DMA memcpy code calls a function that lives in L1, things fall apart.
As such, create a small dedicated DMA memcpy routine that we can assume
sanity at boot time.

Reported-by: Filip Van Rillaer <filip.vanrillaer@oneaccess-net.com>
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:27 -04:00
Graf Yang
f5879fda09 Blackfin: add MDMA defines to make cross-variant coding easier
Add some defines to make the BF538/BF561 look like most other Blackfin
parts in that it has a MDMA0 channel available for low level init.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:26 -04:00
Mike Frysinger
f339f46b05 Blackfin: fix detection of cached L2 SRAM
Make sure our bfin_addr_dcachable() function flags cached L2 SRAM properly
else memory easily goes unflushed when working with DMA.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:25 -04:00
Mike Frysinger
c8f36dc3c1 Blackfin: simplify BF561 coreb driver greatly
Since 90% of this driver can be handled in user space, move it to the
corebld user space application.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:11:24 -04:00
Sonic Zhang
b9ccf14bc5 Blackfin: update defconfigs
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-06-12 06:11:23 -04:00
Mike Frysinger
78f28a0a83 Blackfin: simplify the do_flush macro
Simplify the do_flush macro now that we don't need to take into account
a second instruction being used together.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-06-12 06:03:48 -04:00
Mike Frysinger
f8b556514c Blackfin: set bf51x/bf52x to 0.0 rev by default and bf54x to 0.2
Update the default revs based on what we actually support (bf54x-0.[01]
is too broken to use).

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-06-12 06:03:48 -04:00
Michael Hennerich
d4b890b0cd Blackfin: do not error if GPIO IRQ is requested already as GPIO
Some drivers expect to be able to request both as GPIO and GPIO IRQ, so
allow that use case.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:03:48 -04:00
Mike Frysinger
a413647bb5 Blackfin: pull updated anomaly lists from toolchain
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-06-12 06:03:47 -04:00
Michael Hennerich
648882d940 Blackfin: fix up PATA resource handling in bf537-stamp
Make sure the addresses declared match reality, and make the PATA IRQ code
optional.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-06-12 06:03:46 -04:00
Philippe Gerum
51387009bd Blackfin: merge Philippe's recent ipipe patch
ipipe-2.6.28.9-blackfin-git95aafe6.patch

Singed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-06-12 06:03:46 -04:00
Mike Frysinger
f75196c404 Blackfin: fix warnings with I/O port macros
The I/O port functions take ints, so we need to cast them up before
passing to our read/write funcs to avoid ugly messes of warnings.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-06-12 06:03:46 -04:00
Mariusz Kozlowski
f4290e81f6 Blackfin: fix parentheses balance and convert some tab/space mixing
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-06-12 06:03:45 -04:00
Graf Yang
4b402e3a54 Blackfin: fix bug found by traps test case 21
The traps test case 21 "exception 0x3f: l1_instruction_access" would make
the kernel panic on BF533's because we end up calling show_stack()
infinitely.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-06-12 06:03:45 -04:00
Mike Frysinger
5d89137a17 Blackfin: fix data cache flushing when doing icache flushing
Make sure we flush all data caches and their write buffers before flushing
icache, otherwise random edge cases could crop up where stale data is read
into icache from external memory.  As fallout, punt the combined icache +
dcache flush function since we cannot safely do them back to back -- the
SSYNC is needed between the dcache flush and the icache flush.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-06-12 06:03:45 -04:00
Graf Yang
f82e0a0c67 Blackfin: fix link failure due to CONFIG_EXCEPTION_L1_SCRATCH
Move exception stack mess from entry.S to init.c to fix link failure when
CONFIG_EXCEPTION_L1_SCRATCH is in use.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-06-12 06:03:44 -04:00
Robin Getz
b8d0c778e6 Blackfin: allow scheduler functions to be placed into L1
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-06-12 06:03:44 -04:00
Sonic Zhang
8d5c2f03bb Blackfin: Allow bf548 ATAPI to be routed to GPIO
By default, it is routed to async memory address. In GPIO case,
GPIO peripheral PINs should be requested in advance.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-06-12 06:03:43 -04:00
Yi Li
ffdf3ec806 Blackfin: bf527-ezkit: add support for mmc-spi
Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-06-12 06:03:43 -04:00
Mike Frysinger
c8342f872d Blackfin: add some help text to the EBIU_AMBCTL settings
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-06-12 06:03:43 -04:00
Michael Hennerich
349ebbcc26 Blackfin: add comment for anomaly 05000171 to init code
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-06-12 06:03:42 -04:00
Arnd Bergmann
5b17e1cd89 asm-generic: rename page.h and uaccess.h
The current asm-generic/page.h only contains the get_order
function, and asm-generic/uaccess.h only implements
unaligned accesses. This renames the file to getorder.h
and uaccess-unaligned.h to make room for new page.h
and uaccess.h file that will be usable by all simple
(e.g. nommu) architectures.

Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2009-06-11 21:02:17 +02:00
Arnd Bergmann
72099ed271 asm-generic: rename atomic.h to atomic-long.h
The existing asm-generic/atomic.h only defines the
atomic_long type. This renames it to atomic-long.h
so we have a place to add a truly generic atomic.h
that can be used on all non-SMP systems.

Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
2009-06-11 21:02:17 +02:00
Arnd Bergmann
c31ae4bb4a asm-generic: introduce asm/bitsperlong.h
This provides a reliable way for asm-generic/types.h and other
files to find out if it is running on a 32 or 64 bit platform.

We cannot use CONFIG_64BIT for this in headers that are included
from user space because CONFIG symbols are not available there.
We also cannot do it inside of asm/types.h because some headers
need the word size but cannot include types.h.

The solution is to introduce a new header <asm/bitsperlong.h>
that defines both __BITS_PER_LONG for user space and
BITS_PER_LONG for usage in the kernel. The asm-generic
version falls back to 32 bit unless the architecture overrides
it, which I did for all 64 bit platforms.

Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2009-06-11 21:02:14 +02:00
Arnd Bergmann
63b852a6b6 asm-generic: rename termios.h, signal.h and mman.h
The existing asm-generic versions are incomplete and included
by some architectures. New architectures should be able
to use a generic version, so rename the existing files and
change all users, which lets us add the new files.

Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2009-06-11 21:01:52 +02:00
Oskar Schirmer
c3dc5bec05 flat: fix data sections alignment
The flat loader uses an architecture's flat_stack_align() to align the
stack but assumes word-alignment is enough for the data sections.

However, on the Xtensa S6000 we have registers up to 128bit width
which can be used from userspace and therefor need userspace stack and
data-section alignment of at least this size.

This patch drops flat_stack_align() and uses the same alignment that
is required for slab caches, ARCH_SLAB_MINALIGN, or wordsize if it's
not defined by the architecture.

It also fixes m32r which was obviously kaput, aligning an
uninitialized stack entry instead of the stack pointer.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Oskar Schirmer <os@emlix.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Bryan Wu <cooloney@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Johannes Weiner <jw@emlix.com>
Acked-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-29 08:40:02 -07:00
Mike Frysinger
add8a5050a Blackfin: fix strncmp.o build error
Fix some more fallout of the string changes:

  CC      arch/blackfin/lib/strncmp.o
In file included from include/linux/bitmap.h:9,
                 from include/linux/nodemask.h:90,
                 from include/linux/mmzone.h:17,
                 from include/linux/gfp.h:5,
                 from include/linux/kmod.h:23,
                 from include/linux/module.h:14,
                 from arch/blackfin/lib/strncmp.c:14:
include/linux/string.h: In function ‘strstarts’:
include/linux/string.h:132: error: implicit declaration of function ‘strncmp’
make[1]: *** [arch/blackfin/lib/strncmp.o] Error 1

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
CC: Rusty Russell <rusty@rustcorp.com.au>
2009-05-27 00:27:05 -04:00
Mike Frysinger
2ec10ea91b Blackfin: drop unneeded asm/.gitignore
We don't create a include/asm/mach/ symlink anymore, so we don't need the
.gitignore for it.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-05-27 00:27:04 -04:00
Mike Frysinger
6b50520b2f Blackfin: ignore generated vmlinux.lds
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-05-27 00:27:03 -04:00
Mike Frysinger
7a1450fdf4 Blackfin: hook up preadv/pwritev syscalls
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-05-27 00:27:00 -04:00
Magnus Damm
8e19608e8b clocksource: pass clocksource to read() callback
Pass clocksource pointer to the read() callback for clocksources.  This
allows us to share the callback between multiple instances.

[hugh@veritas.com: fix powerpc build of clocksource pass clocksource mods]
[akpm@linux-foundation.org: cleanup]
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: John Stultz <johnstul@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-21 13:41:47 -07:00
Sonic Zhang
d307d36ade tty: Blackin CTS/RTS
Both software emulated and hardware based CTS and RTS are enabled in
serial driver.

The CTS RTS PIN connection on BF548 UART port is defined as a modem
device not as a host device.  In order to test it under Linux, please
nake a cross UART cable to exchange CTS and RTS signal.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07 08:44:05 -07:00
Sonic Zhang
6f95570e40 Change hardware flow control from poll to interrupt driven
Only the CTS bit is affected.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07 08:44:05 -07:00
Wolfgang Muees
93b61bddc1 Blackfin SPI Driver: Make mmc_spi driver work on Blackfin
1. Rewrite of the non-dma data transfer functions to use only ONE mode
   of TIMOD (TIMOD=0x1).  With TIMOD=0, it was not possible to set the TX
   bit pattern.  So the TDBR = 0xFFFF inside the read calls won't work.

2. Clear SPI_RDBR before reading and before duplex transfer.
   Otherwise the garbage data in RDBR will get read.  Since mmc_spi uses a
   lot of duplex transfers, this is the main cause of mmc_spi failure.

3. Poll RXS for transfer completion.  Polling SPIF or TXS cannot
   guarantee transfer completion.  This may interrupt a transfer before it
   is finished.  Also this may leave garbage data in buffer and affect
   next transfer.

[Yi Li <yi.li@analog.com>: add a field "u16 idle_tx_val" in "struct
bfin5xx_spi_chip" to specify the value to transmit if no TX value
is supplied.]
Signed-off-by: Wolfgang Muees <wolfgang.mues@auerswald.de>
Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07 08:31:06 -07:00
Michael Hennerich
42c78b2bf5 Blackfin SPI Driver: Add GPIO controlled SPI Slave Select support
Add support for GPIO controlled SPI Chip Selects.  To make use of this
feature, set chip_select = 0 and add a proper cs_gpio to your
controller_data.

struct spi_board_info
        .chip_select = 0

struct bfin5xx_spi_chip
        .cs_gpio = GPIO_P###

There are various SPI devices that require SPI MODE_0, and need to have
the Chip Selects asserted during the entire transfer.  Consider using
SPI_MODE_3 (SPI_CPHA | SPI_CPOL) if your device allows it.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07 08:31:06 -07:00
Michael Hennerich
7513e006c6 Blackfin SPI Driver: Fix erroneous SPI Clock divisor calculation
Fix erroneous SPI Clock divisor calculation.  Make sure SPI_BAUD is always
>= 2.  Writing a value of 0 or 1 to the SPI_BAUD register disables the
serial clock.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07 08:31:04 -07:00
Linus Torvalds
22ae77bc7a Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: (53 commits)
  [MTD] struct device - replace bus_id with dev_name(), dev_set_name()
  [MTD] [NOR] Fixup for Numonyx M29W128 chips
  [MTD] mtdpart: Make ecc_stats more realistic.
  powerpc/85xx: TQM8548: Update DTS file for multi-chip support
  powerpc: NAND: FSL UPM: document new bindings
  [MTD] [NAND] FSL-UPM: Add wait flags to support board/chip specific delays
  [MTD] [NAND] FSL-UPM: add multi chip support
  [MTD] [NOR] Add device parent info to physmap_of
  [MTD] [NAND] Add support for NAND on the Socrates board
  [MTD] [NAND] Add support for 4KiB pages.
  [MTD] sysfs support should not depend on CONFIG_PROC_FS
  [MTD] [NAND] Add parent info for CAFÉ controller
  [MTD] support driver model updates
  [MTD] driver model updates (part 2)
  [MTD] driver model updates
  [MTD] [NAND] move gen_nand's probe function to .devinit.text
  [MTD] [MAPS] move sa1100 flash's probe function to .devinit.text
  [MTD] fix use after free in register_mtd_blktrans
  [MTD] [MAPS] Drop now unused sharpsl-flash map
  [MTD] ofpart: Check name property to determine partition nodes.
  ...

Manually fix trivial conflict in drivers/mtd/maps/Makefile
2009-04-06 14:56:26 -07:00
Linus Torvalds
714f83d5d9 Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (413 commits)
  tracing, net: fix net tree and tracing tree merge interaction
  tracing, powerpc: fix powerpc tree and tracing tree interaction
  ring-buffer: do not remove reader page from list on ring buffer free
  function-graph: allow unregistering twice
  trace: make argument 'mem' of trace_seq_putmem() const
  tracing: add missing 'extern' keywords to trace_output.h
  tracing: provide trace_seq_reserve()
  blktrace: print out BLK_TN_MESSAGE properly
  blktrace: extract duplidate code
  blktrace: fix memory leak when freeing struct blk_io_trace
  blktrace: fix blk_probes_ref chaos
  blktrace: make classic output more classic
  blktrace: fix off-by-one bug
  blktrace: fix the original blktrace
  blktrace: fix a race when creating blk_tree_root in debugfs
  blktrace: fix timestamp in binary output
  tracing, Text Edit Lock: cleanup
  tracing: filter fix for TRACE_EVENT_FORMAT events
  ftrace: Using FTRACE_WARN_ON() to check "freed record" in ftrace_release()
  x86: kretprobe-booster interrupt emulation code fix
  ...

Fix up trivial conflicts in
 arch/parisc/include/asm/ftrace.h
 include/linux/memory.h
 kernel/extable.c
 kernel/module.c
2009-04-05 11:04:19 -07:00
Linus Torvalds
811158b147 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (28 commits)
  trivial: Update my email address
  trivial: NULL noise: drivers/mtd/tests/mtd_*test.c
  trivial: NULL noise: drivers/media/dvb/frontends/drx397xD_fw.h
  trivial: Fix misspelling of "Celsius".
  trivial: remove unused variable 'path' in alloc_file()
  trivial: fix a pdlfush -> pdflush typo in comment
  trivial: jbd header comment typo fix for JBD_PARANOID_IOFAIL
  trivial: wusb: Storage class should be before const qualifier
  trivial: drivers/char/bsr.c: Storage class should be before const qualifier
  trivial: h8300: Storage class should be before const qualifier
  trivial: fix where cgroup documentation is not correctly referred to
  trivial: Give the right path in Documentation example
  trivial: MTD: remove EOL from MODULE_DESCRIPTION
  trivial: Fix typo in bio_split()'s documentation
  trivial: PWM: fix of #endif comment
  trivial: fix typos/grammar errors in Kconfig texts
  trivial: Fix misspelling of firmware
  trivial: cgroups: documentation typo and spelling corrections
  trivial: Update contact info for Jochen Hein
  trivial: fix typo "resgister" -> "register"
  ...
2009-04-03 15:24:35 -07:00
Alexey Dobriyan
6f2c55b843 Simplify copy_thread()
First argument unused since 2.3.11.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-02 19:04:51 -07:00
Ingo Molnar
8302294f43 Merge branch 'tracing/core-v2' into tracing-for-linus
Conflicts:
	include/linux/slub_def.h
	lib/Kconfig.debug
	mm/slob.c
	mm/slub.c
2009-04-02 00:49:02 +02:00
Alexey Dobriyan
99b7623380 proc 2/2: remove struct proc_dir_entry::owner
Setting ->owner as done currently (pde->owner = THIS_MODULE) is racy
as correctly noted at bug #12454. Someone can lookup entry with NULL
->owner, thus not pinning enything, and release it later resulting
in module refcount underflow.

We can keep ->owner and supply it at registration time like ->proc_fops
and ->data.

But this leaves ->owner as easy-manipulative field (just one C assignment)
and somebody will forget to unpin previous/pin current module when
switching ->owner. ->proc_fops is declared as "const" which should give
some thoughts.

->read_proc/->write_proc were just fixed to not require ->owner for
protection.

rmmod'ed directories will be empty and return "." and ".." -- no harm.
And directories with tricky enough readdir and lookup shouldn't be modular.
We definitely don't want such modular code.

Removing ->owner will also make PDE smaller.

So, let's nuke it.

Kudos to Jeff Layton for reminding about this, let's say, oversight.

http://bugzilla.kernel.org/show_bug.cgi?id=12454

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2009-03-31 01:14:44 +04:00
Matt LaPlante
692105b8ac trivial: fix typos/grammar errors in Kconfig texts
Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-03-30 15:22:01 +02:00
Linus Torvalds
0151f94f2e Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6:
  Blackfin arch: be less noisy when gets a gpio conflict after kernel has booted
  Blackfin arch: add RSI's definitions to bf514 and bf516
  Blackfin arch: add link-time asserts to make sure on-chip regions dont overflow
  Blackfin arch: sport spi needs 6 gpio pins
  Blackfin arch: add sport-spi related resource stuff to board file
  Blackfin arch: Blacklist Hibernate (PM_SUSPEND_MEM) on BF561 as well
  Blackfin arch: Privide BF537-STAMP platform data of ADP5520 Multifunction driver
  Blackfin arch: enable the platfrom PATA driver with CF Cards
  Blackfin arch: clean up sports header file
  Blackfin arch: convert BF5{18,27,48}_FAMILY to CONFIG_BF{51,52,54}x
  Blackfin arch: bf51x processors also have 8 timers
  Blackfin arch: add a check to make sure only Blackfin GPIOs may generate IRQs
  Blackfin arch: update default kernel configuration
  Blackfin arch: include linux headers that this one uses definitions from fro sport drivers
2009-03-28 13:55:49 -07:00
Robin Getz
d6879c585b Blackfin arch: be less noisy when gets a gpio conflict after kernel has booted
Once the kernel has booted - be less noisy when someone does a modprobe
(and gets a gpio conflict).

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-29 01:10:30 +08:00
Cliff Cai
abd750a0fa Blackfin arch: add RSI's definitions to bf514 and bf516
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-29 01:03:20 +08:00
Mike Frysinger
4636b3019a Blackfin arch: add link-time asserts to make sure on-chip regions dont overflow
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-29 00:47:31 +08:00
Cliff Cai
1eb19e30ad Blackfin arch: sport spi needs 6 gpio pins
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-28 23:31:43 +08:00
Cliff Cai
1e9aa95526 Blackfin arch: add sport-spi related resource stuff to board file
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-28 23:28:51 +08:00
Michael Hennerich
b89df50423 Blackfin arch: Blacklist Hibernate (PM_SUSPEND_MEM) on BF561 as well
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-28 23:14:41 +08:00
Michael Hennerich
3ea57218fd Blackfin arch: Privide BF537-STAMP platform data of ADP5520 Multifunction driver
ADP5520 Multifunction LCD Backlight and Keypad Input Device Driver

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-28 22:15:07 +08:00
Michael Hennerich
2c8beb2cbe Blackfin arch: enable the platfrom PATA driver with CF Cards
Provide option to use the platfrom PATA driver with CF Cards
on the CF-IDE-NAND Add-On-Card in Common Memory Mode

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-28 22:13:43 +08:00
Mike Frysinger
714e76d71d Blackfin arch: clean up sports header file
Remove redundancy of the name err_irq

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-28 20:38:17 +08:00
Mike Frysinger
269647dc8f Blackfin arch: convert BF5{18,27,48}_FAMILY to CONFIG_BF{51,52,54}x
convert BF5{18,27,48}_FAMILY to CONFIG_BF{51,52,54}x as the defines
are redundant in these cases

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-28 20:32:57 +08:00
Mike Frysinger
ffc89627ae Blackfin arch: bf51x processors also have 8 timers
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-28 20:31:33 +08:00
Michael Hennerich
e1312bfcc2 Blackfin arch: add a check to make sure only Blackfin GPIOs may generate IRQs
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-28 21:18:45 +08:00
Sonic Zhang
a66648756f Blackfin arch: update default kernel configuration
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-28 23:46:17 +08:00
Mike Frysinger
085780d5bb Blackfin arch: include linux headers that this one uses definitions from fro sport drivers
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-28 17:43:01 +08:00
Ingo Molnar
6e15cf0486 Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2
Conflicts:
	arch/parisc/kernel/irq.c
	arch/x86/include/asm/fixmap_64.h
	arch/x86/include/asm/setup.h
	kernel/irq/handle.c

Semantic merge:
        arch/x86/include/asm/fixmap.h

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-27 17:28:43 +01:00
Linus Torvalds
ba1eb95cf3 Merge branch 'header-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'header-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (50 commits)
  x86: headers cleanup - setup.h
  emu101k1.h: fix duplicate include of <linux/types.h>
  compiler-gcc4: conditionalize #error on __KERNEL__
  remove __KERNEL_STRICT_NAMES
  make netfilter use strict integer types
  make drm headers use strict integer types
  make MTD headers use strict integer types
  make most exported headers use strict integer types
  make exported headers use strict posix types
  unconditionally include asm/types.h from linux/types.h
  make linux/types.h as assembly safe
  Neither asm/types.h nor linux/types.h is required for arch/ia64/include/asm/fpu.h
  headers_check fix cleanup: linux/reiserfs_fs.h
  headers_check fix cleanup: linux/nubus.h
  headers_check fix cleanup: linux/coda_psdev.h
  headers_check fix: x86, setup.h
  headers_check fix: x86, prctl.h
  headers_check fix: linux/reinserfs_fs.h
  headers_check fix: linux/socket.h
  headers_check fix: linux/nubus.h
  ...

Manually fix trivial conflicts in:
	include/linux/netfilter/xt_limit.h
	include/linux/netfilter/xt_statistic.h
2009-03-26 16:11:41 -07:00
Linus Torvalds
a8416961d3 Merge branch 'irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (32 commits)
  x86: disable __do_IRQ support
  sparseirq, powerpc/cell: fix unused variable warning in interrupt.c
  genirq: deprecate obsolete typedefs and defines
  genirq: deprecate __do_IRQ
  genirq: add doc to struct irqaction
  genirq: use kzalloc instead of explicit zero initialization
  genirq: make irqreturn_t an enum
  genirq: remove redundant if condition
  genirq: remove unused hw_irq_controller typedef
  irq: export remove_irq() and setup_irq() symbols
  irq: match remove_irq() args with setup_irq()
  irq: add remove_irq() for freeing of setup_irq() irqs
  genirq: assert that irq handlers are indeed running in hardirq context
  irq: name 'p' variables a bit better
  irq: further clean up the free_irq() code flow
  irq: refactor and clean up the free_irq() code flow
  irq: clean up manage.c
  irq: use GFP_KERNEL for action allocation in request_irq()
  kernel/irq: fix sparse warning: make symbol static
  irq: optimize init_kstat_irqs/init_copy_kstat_irqs
  ...
2009-03-26 16:06:50 -07:00
David S. Miller
08abe18af1 Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
	drivers/net/wimax/i2400m/usb-notif.c
2009-03-26 15:23:24 -07:00
Ingo Molnar
5a54bd1307 Merge commit 'v2.6.29' into core/header-fixes 2009-03-26 18:29:40 +01:00
Bernd Schmidt
158772c2d4 [MTD] Fix a bad dependency in the Blackfin code
Fix a bad dependency in the Blackfin code on a RomFS config symbol that doesn't
exist upstream.

Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Bernd Schmidt <bernd.schmidt@analog.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-03-24 09:02:59 +00:00
Ingo Molnar
edb35028e4 Merge branches 'irq/genirq' and 'linus' into irq/core 2009-03-16 09:20:13 +01:00
Ingo Molnar
8293dd6f86 Merge branch 'x86/core' into tracing/ftrace
Semantic merge:

  kernel/trace/trace_functions_graph.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-10 10:17:48 +01:00
Ingo Molnar
12e87e36e0 Merge branches 'tracing/doc', 'tracing/ftrace', 'tracing/printk' and 'linus' into tracing/core 2009-03-10 09:56:25 +01:00
Ingo Molnar
467c88fee5 Merge branches 'x86/apic', 'x86/asm', 'x86/fixmap', 'x86/memtest', 'x86/mm', 'x86/urgent', 'linus' and 'core/percpu' into x86/core 2009-03-10 09:26:38 +01:00
Ingo Molnar
f0ef039851 Merge branch 'x86/core' into tracing/textedit
Conflicts:
	arch/x86/Kconfig
	block/blktrace.c
	kernel/irq/handle.c

Semantic conflict:
	kernel/trace/blktrace.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-06 16:45:01 +01:00
Tejun Heo
6a242909b0 percpu: clean up percpu constants
Impact: cleaup

Make the following cleanups.

* There isn't much arch-specific about PERCPU_MODULE_RESERVE.  Always
  define it whether arch overrides PERCPU_ENOUGH_ROOM or not.

* blackfin overrides PERCPU_ENOUGH_ROOM to align static area size.  Do
  it by default.

* percpu allocation sizes doesn't have much to do with the page size.
  Don't use PAGE_SHIFT in their definition.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Bryan Wu <cooloney@kernel.org>
2009-03-06 14:33:58 +09:00
Michael Hennerich
f3f704d375 Blackfin arch: SPI_MMC is now mainlined MMC_SPI
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-06 00:27:57 +08:00
Mike Frysinger
4aad7ec373 Blackfin arch: disable legacy /proc/scsi/ support by default
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-06 00:27:17 +08:00
Mike Frysinger
357fd373e1 Blackfin arch: remove duplicated ANOMALY_05000448 ifdef check
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-06 00:24:01 +08:00
Mike Frysinger
7dbc3f6ead Blackfin arch: add stubs for anomalies 447 and 448
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-06 00:20:49 +08:00
Alon Bar-Lev
fb7b75abe5 Blackfin arch: cleanup bfin_sport.h header and export it to userspace
Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-05 19:42:43 +08:00
Jie Zhang
7786ce823b Blackfin arch: fix bug - gdb signull case make trunk kernel panic frequently
Use copy_to_user_page and copy_from_user_page instead of
memcpy. copy_to_user_page does cache flush when necessary.

Signed-off-by: Jie Zhang <jie.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-05 18:50:26 +08:00
Mike Frysinger
27276ba21f Blackfin arch: remove spurious dash when dcache is off
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-05 18:47:20 +08:00
Mike Frysinger
8e2a769414 Blackfin arch: mark init_pda as __init as only __init funcs all it
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-05 18:45:07 +08:00
Michael Hennerich
ba0dade4bb Blackfin arch: fix bug - On bf548-ezkit, ethernet fails to work after wakeup from "mem"
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-05 18:41:24 +08:00
Robin Getz
0004952242 Blackfin arch: Random read/write errors are a bad thing
Random read/write errors are a bad thing - so don't let anyone
(including the test bench) run on something we know is bad.

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-05 18:18:49 +08:00
Graf Yang
5047607f01 Blackfin arch: update default kernel config, select KSZ8893M driver for BF518
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-05 17:32:41 +08:00
Sonic Zhang
d7ff1a90b2 Blackfin arch: Fix bug - KGDB single step into the middle of a 4 bytes instruction on bf561 after soft bp is hit
Run IFLUSH twice to avoid loading wrong instruction
after invalidating icache and following sequence is met.

1) The one instruction address is cached in the icache.
2) This instruction in SDRAM is changed.
3) IFLASH[P0] is executed only once in lackfin_icache_flush_range().
4) This instruction is executed again, but not the changed new one.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-05 18:26:59 +08:00
Graf Yang
c19577e34e Blackfin arch: Fix bug - make ksz8893m driver available when bfin_mac is enabled
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-05 17:35:59 +08:00
Mike Frysinger
f7e989ab64 Blackfin arch: make sure people do not set the kernel load address too high
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-05 17:33:36 +08:00
Enrik Berkhan
7acab7a9ca Blackfin arch: fix bug - The SPORT_HYS bit is not set for BF561 0.5
IMHO the setting should depend on ANOMALY_05000305 which is about the
availability of the bit, not ANOMALY_05000265 which only describes the
SPORT sensitivity to noise (checked for BF561 only, though).

If that's not true for other BF variants, maybe the definition of
ANOMALY_05000265 for BF561 should be changed to '(1)' instead.

Signed-off-by: Enrik Berkhan <Enrik.Berkhan@ge.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-05 14:42:30 +08:00
Mike Frysinger
c18e99cfba Blackfin arch: update anomaly sheets to match latest public info
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-04 17:36:49 +08:00
Michael Hennerich
ff19fed4fe Blackfin arch: Fix BUG - kernel fails to build in pm.c when allow wakeup fromi standby by GPIO
This feature is not available on BF54x.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-04 17:35:51 +08:00
Michael Hennerich
199862892e Blackfin arch: PM_BFIN_WAKE_GP: update help
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-05 16:45:55 +08:00
Sonic Zhang
0bf3d93308 Blackfin arch: fix bug - kgdb fails to continue after setting breakpoint on bf561-ezkit kernel with smp patch
Free spinlock before call IPI handlers.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>


Header from folded patch 'blackfin_arch__fix_bug_-_kgdb_fails_to_continue_after_setting_breakpoint_on_bf561-ezkit_kernel_with_smp_patch-1':

Blackfin arch: fix bug - kgdb fails to continue after setting breakpoint on bf561-ezkit kernel with smp patch

Don't test l1 code in SMP kernel.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-05 16:44:53 +08:00
Michael Hennerich
8bf6774d7f Blackfin arch: Enable Write Back Cache on all Blackfin Boards
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-04 11:34:10 +08:00
Philippe Gerum
9bd50df6aa Blackfin arch: Update adeos blackfin arch patch to 1.9-00
Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-04 16:52:38 +08:00
Tom Parker
97d4b35fb4 Blackfin arch: fix bug - Error if one serial has hardware flow control and the other doesn't
I have a system where UART0 is configured with hardware flow control, but UART1
doesn't have it enabled. Attempting to access UART1 in this configuration
results in the following error in dmesg:

<3>bfin-gpio: GPIO 0 is already reserved as Peripheral by bfin-uart !
<5>Stack from 0082bc7c:
<5>        0082bc88 00404dd6 00000003 00000000 0054051e 004079da 0082bcb4
00000000
<5>        00000003 00000000 0052686c 0113f2a0 005fa3f0 00000032 20515249
00003035
<5>        00427228 00526e50 0113f2e0 005fa3f0 00000032 0113f2e0 0054b748
0000ffff
<5>        22222222 22222222 004e1628 00427304 00000000 00000032 00000023
0054b748
<5>        00487a94 0054b7e8 0054b748 0000000b 00487fb8 0054b748 0054b748
00000001
<5>        0000000a 005fa3f0 009d4fe8 0101e3c0 0054b748 005fa3f0 0050b134
0054b748
<5>
<5>Call Trace:
<4>[<00485c16>] _uart_startup+0x56/0x178
<4>[<004865c8>] _uart_open+0x40/0x3e0
<4>[<0048661c>] _uart_open+0x94/0x3e0
<4>[<0047f1ce>] _init_dev+0x1fa/0x450
<4>[<004e1628>] ___mutex_unlock_slowpath+0x30/0xe8
<4>[<004815da>] _tty_open+0xf6/0x21c
<4>[<0043dab0>] ___path_lookup_intent_open+0x34/0x7c
<4>[<004375e4>] _chrdev_open+0x7c/0x134
<4>[<0043dc2c>] _open_namei+0x60/0x568
<4>[<00433fa2>] ___dentry_open+0x9e/0x188
<4>[<00437568>] _chrdev_open+0x0/0x134
<4>[<0043410c>] _nameidata_to_filp+0x30/0x3c
<4>[<00434152>] _do_filp_open+0x3a/0x44
<4>[<00408826>] _task_running_tick+0x102/0x278
<4>[<0043418e>] _do_sys_open+0x32/0xac
<4>[<0043ede4>] _sys_ioctl+0x28/0x50
<4>[<0043edbc>] _sys_ioctl+0x0/0x50
<4>[<00434224>] _sys_open+0x18/0x20
<4>[<0043420c>] _sys_open+0x0/0x20
<4>[<00418174>] _sys_setuid+0x0/0xc8

This is because the #ifdef's in bfin_serial_5xx.h are messed up. More
specifically, they add/remove the uart_{rts,cts}_pin fields in
bfin_serial_resources based on whether the particular port has rts/cts enabled,
as opposed to when either port has it enabled.

This patch fixed this.

Signed-off-by: Tom Parker <blackfin@tevp.net>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-03 17:59:39 +08:00
Mike Frysinger
ee554be9dd Blackfin arch: fix compile failure when missing the anomaly definition
make sure ANOMALY_05000278/ANOMALY_05000380 is defined for all parts

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-03 16:52:55 +08:00
Uwe Kleine-Koenig
c79a61f557 tracing: make CALLER_ADDRx overwriteable
The current definition of CALLER_ADDRx isn't suitable for all platforms.
E.g. for ARM __builtin_return_address(N) doesn't work for N > 0 and
AFAIK for powerpc there are no frame pointers needed to have a working
__builtin_return_address.  This patch allows defining the CALLER_ADDRx
macros in <asm/ftrace.h> and let these take precedence.

Because now <asm/ftrace.h> is included unconditionally in
<linux/ftrace.h> all archs that don't already had this include get an
empty one for free.

Signed-off-by: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
2009-03-02 16:49:37 -05:00
Bernd Schmidt
e84dcaa18b Blackfin arch: fix bug - jump_to_zero test case failed on noMPU kernel
The nompu code is now derived from the mpu code, and had the same problem -
no null pointer detection on ICPLBs.

Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-02 18:37:48 +08:00
Mike Frysinger
34d464f8aa Blackfin arch: use common KGDB_TESTS rather than our own KGDB_TESTCASE
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-02 18:14:47 +08:00
Michael Hennerich
0f29456a21 Blackfin arch: Make IRQ_EPPIx_ERROR naming consistent
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-02 18:06:13 +08:00
Sonic Zhang
28e4cf22a3 Blackfin arch: Disable NAND option by default
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-02 18:04:24 +08:00
Mike Frysinger
a572e217c6 Blackfin arch: drop untested and useless "generic" board file
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-03-02 17:22:36 +08:00
Patrick Ohly
cb9eff0978 net: new user space API for time stamping of incoming and outgoing packets
User space can request hardware and/or software time stamping.
Reporting of the result(s) via a new control message is enabled
separately for each field in the message because some of the
fields may require additional computation and thus cause overhead.
User space can tell the different kinds of time stamps apart
and choose what suits its needs.

When a TX timestamp operation is requested, the TX skb will be cloned
and the clone will be time stamped (in hardware or software) and added
to the socket error queue of the skb, if the skb has a socket
associated with it.

The actual TX timestamp will reach userspace as a RX timestamp on the
cloned packet. If timestamping is requested and no timestamping is
done in the device driver (potentially this may use hardware
timestamping), it will be done in software after the device's
start_hard_xmit routine.

Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-15 22:43:33 -08:00
Ingo Molnar
22796b1572 Merge branch 'core/header-fixes' into x86/headers
Conflicts:
	arch/x86/include/asm/setup.h
2009-02-13 21:05:03 +01:00
Ingo Molnar
8f8573ae9f Merge branches 'irq/genirq', 'irq/sparseirq' and 'irq/urgent' into irq/core 2009-02-13 11:57:18 +01:00
Ingo Molnar
f8a6b2b9ce Merge branch 'linus' into x86/apic
Conflicts:
	arch/x86/kernel/acpi/boot.c
	arch/x86/mm/fault.c
2009-02-13 09:44:22 +01:00
Michael Hennerich
c8e674125e Blackfin arch: Remove outdated code
The removed version with the loop registers saved on the stack was
originally intended to workaround the missing toolchain support for
LoopReg Clobbers.

Since our toolchain now supports these there is no point in keeping this
workaround. And since we don't touch LoopRegs anymore we're no longer
subject for ANOMALY_05000312.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04 16:49:45 +08:00
Michael Hennerich
4e653e04cc Blackfin arch: Fix udelay implementation
Avoid possible overflow during 32*32->32 multiplies.

Reported-by: Marco Reppenhagen <marco.reppenhagen@auerswald.de>
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04 16:49:45 +08:00
Michael Hennerich
972de7d929 Blackfin arch: Update Copyright information
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04 16:49:45 +08:00
Michael Hennerich
772c258fd0 Blackfin arch: Add BF561 PPI POLS, POLC Masks
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04 16:49:45 +08:00
Michael Hennerich
dfd700baf2 Blackfin arch: Update CM-BF527 kernel config
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04 16:49:45 +08:00
Mike Frysinger
af4c7d4b4e Blackfin arch: define bfin_memmap as static since it is only used here
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04 16:49:45 +08:00
Mike Frysinger
d04dfc4c0e Blackfin arch: cplb mananger: use a do...while loop rather than a for loop
use a do...while loop rather than a for loop to get slightly better
optimization and to avoid gcc "may be used uninitialized" warnings ...
we know that the [id]cplb_nr_bounds variables will never be 0, so this
is OK

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04 16:49:45 +08:00