Commit Graph

562 Commits

Author SHA1 Message Date
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
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
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
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
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
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
Mike Frysinger
6b50520b2f Blackfin: ignore generated vmlinux.lds
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-05-27 00:27:03 -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
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
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
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
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
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
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
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
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
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
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
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
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
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
249d51b53a Merge commit 'v2.6.29-rc4' into core/percpu
Conflicts:
	arch/x86/mach-voyager/voyager_smp.c
	arch/x86/mm/fault.c
2009-02-09 14:58:11 +01:00
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
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
Bernd Schmidt
bf324cb81a Blackfin arch: fix bug - traps test case 19 for exception 0x2d fails
Enable null pointer checking for ICPLBs. The code was there but for
some reason I had commented it out at some stage during development.

Should restrict this to 1K since atomic ops start there.

Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04 16:49:45 +08:00
Mike Frysinger
ed1fb6048c Blackfin arch: read SYSCR on newer parts that mirror the bits of SWRST in it
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
a6595bf04b Blackfin arch: bfin_reset->_bfin_reset redirection no longer needed
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
adab7eb883 Blackfin arch: sync reboot handler with version in u-boot
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
Graf Yang
0ce5eaf8ec Blackfin arch: Fix bug - BF518 port F, G, and H have different mux offset compare to BF527
[Mike Frysinger <vapier.adi@gmail.com>: keep the ifdef nest down]

Signed-off-by: Graf Yang <graf.yang@analog.com>
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
Grace Pan
047481f348 Blackfin arch: Add in cflag to support mlong-calls for kgdb_test
Signed-off-by: Grace Pan <grace.pan@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04 16:49:45 +08:00
Sonic Zhang
b52dae3139 Blackfin arch: Fix bug - Run "reboot" hangs bf518-ezbrd
[Mike Frysinger <vapier.adi@gmail.com>:
 - setup P_DEFAULT_BOOT_SPI_CS  for every arch based on
   the default bootrom behavior and convert all our boards
   to it
 - revert previous anomaly change ... bf51x is not affected
   by anomaly 05000353]

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
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
Robin Getz
3605fb0965 Blackfin arch: Add ability to count and display number of NMI interrupts
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04 16:49:45 +08:00
Robin Getz
0be5893914 Blackfin arch: Add a few more instructions that can cause the trace buffer to be discontiguous
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04 16:49:45 +08:00
Mike Frysinger
f556309ea0 Blackfin arch: cleanup bf54x ifdef mess in gpio code
merge more of the bf54x and !bf54x gpio code together to
cut down on #ifdef mess

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
Jie Zhang
881eb621fc Blackfin arch: Add one more check on `fp' to prevent double fault
Signed-off-by: Jie Zhang <jie.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04 16:49:45 +08:00
Uwe Kleine-Koenig
45c4f2a0b6 Blackfin arch: explicit add a might sleep to gpio_free
According to the documentation gpio_free should only be called from task
context only.  To make this more explicit add a might sleep to all
implementations.

This patch changes the gpio_free implementations for the blackfin
architecture.

Signed-off-by: Uwe Kleine-Koenig <ukleinek@strlen.de>
Cc: David Brownell <david-b@pacbell.net>
Acked-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2009-02-04 17:02:30 +08:00
Robin Getz
2f95d5bd84 Blackfin arch: don't accidently re-enable interrupts
Make sure we don't accidently re-enable interrupts if we are being
called in atomic context

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04 16:49:45 +08:00
Robin Getz
76e8fe4da6 Blackfin arch: Print out where the bootmode is coming from (for easier debugging).
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-02-04 16:49:45 +08:00
Michael Hennerich
a2be393114 Blackfin arch: reset POLAR setting when acquiring a gpio for the first time
when requesting a GPIO for the first time, the POLAR setting is not
set to a sane state.  this can lead to indeterminate behavior that
cannot be resolved without an explicit write to the Blackfin port POLAR
register.

when requesting a GPIO for the first time via gpio_request(), the POLAR
setting for the GPIO in question should be set to sane state.  this
should occur if the GPIO has not been allocated in any other way.

some examples:
 - when doing something like "request_irq(); gpio_request();" on the
   same GPIO, the POLAR setting should not be reset.
 - when doing "gpio_request(); gpio_request();" on the same GPIO, the
   POLAR setting should be reset only the first time and not the second.

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
5e7bb132bb Blackfin arch: Fix Bug - request lines with peripheral_request_list, but don't get freed with peripheral_free_list
Remove erroneous check_gpio(ident) in peripheral_free()

Reported-by: Michael McTernan <mmcternan@airvana.com>
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
41245ac595 Blackfin arch: fix bug - Dmacopy failed in BF537-STAMP
Dmacopy failed in BF537-STAMP when copy from SRAM to SDRAM and kernel
will reboot automatically.

Fixing by doing a SSYNC before mucking with DMA registers

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 Travis
e65e49d0f3 irq: update all arches for new irq_desc
Impact: cleanup, update to new cpumask API

Irq_desc.affinity and irq_desc.pending_mask are now cpumask_var_t's
so access to them should be using the new cpumask API.

Signed-off-by: Mike Travis <travis@sgi.com>
2009-01-12 15:27:13 -08:00
Yinghai Lu
dee4102a9a sparseirq: use kstat_irqs_cpu instead
Impact: build fix

Ingo Molnar wrote:

> tip/arch/blackfin/kernel/irqchip.c: In function 'show_interrupts':
> tip/arch/blackfin/kernel/irqchip.c:85: error: 'struct kernel_stat' has no member named 'irqs'
> make[2]: *** [arch/blackfin/kernel/irqchip.o] Error 1
> make[2]: *** Waiting for unfinished jobs....
>

So could move kstat_irqs array to irq_desc struct.

(s390, m68k, sparc) are not touched yet, because they don't support genirq

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-11 15:53:13 +01:00
David Howells
8feae13110 NOMMU: Make VMAs per MM as for MMU-mode linux
Make VMAs per mm_struct as for MMU-mode linux.  This solves two problems:

 (1) In SYSV SHM where nattch for a segment does not reflect the number of
     shmat's (and forks) done.

 (2) In mmap() where the VMA's vm_mm is set to point to the parent mm by an
     exec'ing process when VM_EXECUTABLE is specified, regardless of the fact
     that a VMA might be shared and already have its vm_mm assigned to another
     process or a dead process.

A new struct (vm_region) is introduced to track a mapped region and to remember
the circumstances under which it may be shared and the vm_list_struct structure
is discarded as it's no longer required.

This patch makes the following additional changes:

 (1) Regions are now allocated with alloc_pages() rather than kmalloc() and
     with no recourse to __GFP_COMP, so the pages are not composite.  Instead,
     each page has a reference on it held by the region.  Anything else that is
     interested in such a page will have to get a reference on it to retain it.
     When the pages are released due to unmapping, each page is passed to
     put_page() and will be freed when the page usage count reaches zero.

 (2) Excess pages are trimmed after an allocation as the allocation must be
     made as a power-of-2 quantity of pages.

 (3) VMAs are added to the parent MM's R/B tree and mmap lists.  As an MM may
     end up with overlapping VMAs within the tree, the VMA struct address is
     appended to the sort key.

 (4) Non-anonymous VMAs are now added to the backing inode's prio list.

 (5) Holes may be punched in anonymous VMAs with munmap(), releasing parts of
     the backing region.  The VMA and region structs will be split if
     necessary.

 (6) sys_shmdt() only releases one attachment to a SYSV IPC shared memory
     segment instead of all the attachments at that addresss.  Multiple
     shmat()'s return the same address under NOMMU-mode instead of different
     virtual addresses as under MMU-mode.

 (7) Core dumping for ELF-FDPIC requires fewer exceptions for NOMMU-mode.

 (8) /proc/maps is now the global list of mapped regions, and may list bits
     that aren't actually mapped anywhere.

 (9) /proc/meminfo gains a line (tagged "MmapCopy") that indicates the amount
     of RAM currently allocated by mmap to hold mappable regions that can't be
     mapped directly.  These are copies of the backing device or file if not
     anonymous.

These changes make NOMMU mode more similar to MMU mode.  The downside is that
NOMMU mode requires some extra memory to track things over NOMMU without this
patch (VMAs are no longer shared, and there are now region structs).

Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Mike Frysinger <vapier.adi@gmail.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
2009-01-08 12:04:47 +00:00
Linus Torvalds
5bb47b9ff3 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: (171 commits)
  Blackfin arch: fix bug - BF527 0.2 silicon has different CPUID (DSPID) value
  Blackfin arch: Enlarge flash partition for kenel for bf533/bf537 boards
  Blackfin arch: fix bug: kernel crash when enable SDIO host driver
  Blackfin arch: Print FP at level KERN_NOTICE
  Blackfin arch: drop ad73311 test code
  Blackfin arch: update board default configs
  Blackfin arch: Set PB4 as the default irq for bf548 board v1.4+.
  Blackfin arch: fix typo in early printk bit size processing
  Blackfin arch: enable reprogram cclk and sclk for bf518f-ezbrd
  Blackfin arch: add SDIO host driver platform data
  Blackfin arch: fix bug - kernel stops at initial console
  Blackfin arch: fix bug - kernel crash after config IP for ethernet port
  Blackfin arch: add sdh support for bf518f-ezbrd
  Blackfin arch: fix bug - kernel detects BF532 incorrectly
  Blackfin arch: add () to avoid warnings from gcc
  Blackfin arch: change HWTRACE Kconfig and set it on default
  Blackfin arch: Clean oprofile build path for blackfin
  Blackfin arch: remove hardware PM code, oprofile not use it
  Blackfin arch: rewrite get_sclk()/get_vco()
  Blackfin arch: cleanup and unify the ins functions
  ...
2009-01-07 12:00:25 -08:00
Jie Zhang
b339dc79b4 Blackfin arch: Print FP at level KERN_NOTICE
Signed-off-by: Jie Zhang <jie.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Mike Frysinger
09b7f4ad50 Blackfin arch: fix typo in early printk bit size processing
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Mike Frysinger
e32f55d9db Blackfin arch: rewrite get_sclk()/get_vco()
rewrite get_sclk()/get_vco() based on the assumption sclk/vco never
changes (since today it cannot)

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Yi Li
6a01f23033 Blackfin arch: merge adeos blackfin part to arch/blackfin/
[Mike Frysinger <vapier.adi@gmail.com>:
 - handle bf531/bf532/bf534/bf536 variants in ipipe.h
 - cleanup IPIPE logic for bfin_set_irq_handler()
 - cleanup ipipe asm code a bit and add missing ENDPROC()
 - simplify IPIPE code in trap_c
 - unify some of the IPIPE code and fix style
 - simplify DO_IRQ_L1 handling with ipipe code
 - revert IRQ_SW_INT# addition from ipipe merge
 - remove duplicate get_{c,s}clk() prototypes
]

Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Mike Frysinger
459249aa2d Blackfin arch: merge kgdb test code using common CONFIG_KGDB_TESTS
[Grace Pan <grace.pan@analog.com>: Add case for kgdb test in l1 and l2]

Signed-off-by: Grace Pan <grace.pan@analog.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Bernd Schmidt
dbdf20db53 Blackfin arch: Faster C implementation of no-MPU CPLB handler
This is a mixture ofcMichael McTernan's patch and the existing cplb-mpu code.

We ditch the old cplb-nompu implementation, which is a good example of
why a good algorithm in a HLL is preferrable to a bad algorithm written in
assembly.  Rather than try to construct a table of all posible CPLBs and
search it, we just create a (smaller) table of memory regions and
their attributes.  Some of the data structures are now unified for both
the mpu and nompu cases.  A lot of needless complexity in cplbinit.c is
removed.

Further optimizations:
  * compile cplbmgr.c with a lot of -ffixed-reg options, and omit saving
    these registers on the stack when entering a CPLB exception.
  * lose cli/nop/nop/sti sequences for some workarounds - these don't
  * make
    sense in an exception context

Additional code unification should be possible after this.

[Mike Frysinger <vapier.adi@gmail.com>:
 - convert CPP if statements to C if statements
 - remove redundant statements
 - 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
 - the no-mpu code was the last user of MAX_MEM_SIZE and with that rewritten,
   we can punt it
 - add some BUG_ON() checks to make sure we dont overflow the small
   cplb_bounds array
 - add i/d cplb entries for the bootrom because there is functions/data in
   there we want to access
 - we do not need a NULL trailing entry as any time we access the bounds
   arrays, we use the nr_bounds variable
]

Signed-off-by: Michael McTernan <mmcternan@airvana.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:38 +08:00
Robin Getz
7419a327f6 Blackfin arch: panic when running on a chip rev below what we are compiled for
If we are running on a chip revision below what we are compiled for,
there will be missing anomaly workarounds, and a panic is inevitable. Do
is sooner, rather than later, so people don't look for bugs that already
have workarounds (that they turned off).

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Mike Frysinger
508808cda6 Blackfin arch: do not allow people to pass in a diff clkin_hz value
do not allow people to pass in a diff clkin_hz value when
reprogramming clocks -- it is too late currently

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:38 +08:00
Mike Frysinger
7f1e2f98bd Blackfin arch: allow clkin_hz to be specified on the command line
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:38 +08:00
Mike Frysinger
275123e8ab Blackfin arch: show_cpuinfo - consolidate ugly casts
rather than use *(unsigned int *)v everywhere, do this once with a local
cpu_num variable

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Mike Frysinger
a1ee74ca09 Blackfin arch: add __init markings to Blackfin timer init functions
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:38 +08:00
Mike Frysinger
7ad883a94d Blackfin arch: push cache flushing up to dma_memcpy
push cache flushing up to dma_memcpy() so that we call the flush
functions just once

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Mike Frysinger
596b565bd1 Blackfin arch: request_dma() returns 0 on success, not channel
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Mike Frysinger
9c417a4329 Blackfin arch: move most dma functions into static inlines
move most dma functions into static inlines since they are vastly 1
liners that get/set a value in a structure

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Mike Frysinger
8f1cc23388 Blackfin arch: set_dma_callback: do not store .irq
set_dma_callback: do not store .irq if request_irq() failed so we dont
turn around and attempt to free_irq() it later on in free_dma()

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Mike Frysinger
9b011407d6 Blackfin arch: drop irq_callback from struct dma_channel
the irq member already serves the same purpose

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:38 +08:00
Mike Frysinger
68532bdac3 Blackfin arch: drop custom dma_interrupt_t and just use irq_handler_t
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:38 +08:00
Mike Frysinger
259fea42e6 Blackfin arch: include linux/mm.h since we use PAGE_ALIGN and such
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Mike Frysinger
dd3dd384df Blackfin arch: rewrite dma_memcpy() and dma in/out functions
- unify all dma in/out functions (takes ~35 lines of code now)
- unify dma_memcpy with dma in/out functions (1 place that touches MDMA0
  registers)
- add support for 32bit transfers
- cleanup dma_memcpy code to be much more readable
- irqs are disabled only while programming MDMA registers rather than
  the entire transaction

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Mike Frysinger
49946e7329 Blackfin arch: check pointers in safe_dma_memcpy
Check pointers in safe_dma_memcpy as this is the entry point for user-space code

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:38 +08:00
Mike Frysinger
c9e0020d49 Blackfin arch: push bf561 PERIPHERAL_MAP oddity into bf561-specific code
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Robin Getz
a45d575f53 Blackfin arch: Add basic irq stack checking for Blackfin
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:38 +08:00
Mike Frysinger
bdc17a1bf2 Blackfin arch: dma_memcpy() - do not return NULL when transferring a multiple of 65k
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:38 +08:00
Mike Frysinger
8f362f8d7b Blackfin arch: remove #if check on L2_LENGTH
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Mike Frysinger
211daf9d72 Blackfin arch: rename MAX_BLACKFIN_DMA_CHANNEL to MAX_DMA_CHANNELS to match everyone else
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Michael McTernan
99532fd2a0 Blackfin arch: add const to some function prototype and struct dma_channel
Signed-off-by: Michael McTernan <mmcternan@airvana.com>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:38 +08:00
Graf Yang
d642a8ad55 Blackfin arch: implement support for /proc/dma
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Graf Yang
dbc895f955 Blackfin arch: smp patch cleanup from LKML review
1. Use inline get_l1_... functions instead of macro
2. Fix compile issue about smp barrier functions

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Bernd Schmidt
6f985294f7 Blackfin arch: fix bugs in linker script when using upstream binutils
Fix a few problems I discovered when building a kernel with upstream CVS
binutils.

We have to add the NOTES macro to our linker script, since a kernel
built with --build-id is otherwise unable to boot.  Last time NOTES was
added, it broke things, but the definition of the macro has changed not
to rely on parts of the linker script that aren't present on Blackfin.

I also noticed that _l2_lma_start does not point into the kernel image,
but rather somewhere in L1/L2 space, which seems unintended.  Also, when
the L2 section was added to the linker script, the part following it which
computes then length of the init section was not updated.

Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Bernd Schmidt
d1a853057a Blackfin arch: Remove all traces of the relocation stack
Remove all traces of the relocation stack.  It's been removed from
binutils for years now.

Add a sanity overflow check to pcrel24 relocations to catch modules that
were built without -mlong-calls.

Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Mike Frysinger
2eddbadaeb Blackfin arch: tweak the BUG_ON() check to allow for equal values
Tweak the BUG_ON() check to allow for equal values since the way pos is
handled ... it is always indexed and post incremented

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Mike Frysinger
a024d41bfe Blackfin arch: rewrite cplbinfo to use seq files
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Graf Yang
9570ff4af6 Blackfin arch: Allow a gpio pin be requested both as gpio and irq.
[Mike Frysinger <vapier.adi@gmail.com>:
 - use KERN_NOTICE when using gpios as both irq and non
   rather than KERN_ERR
 - embedded newlines in printk() does not fly]

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:38 +08:00
Mike Frysinger
1ea9925553 Blackfin arch: delete now unused "cclk" member of blackfin_cpudata
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:38 +08:00
Frederik Schwarzer
025dfdafe7 trivial: fix then -> than typos in comments and documentation
- (better, more, bigger ...) then -> (...) than

Signed-off-by: Frederik Schwarzer <schwarzerf@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-01-06 11:28:06 +01:00
Linus Torvalds
b840d79631 Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (66 commits)
  x86: export vector_used_by_percpu_irq
  x86: use logical apicid in x2apic_cluster's x2apic_cpu_mask_to_apicid_and()
  sched: nominate preferred wakeup cpu, fix
  x86: fix lguest used_vectors breakage, -v2
  x86: fix warning in arch/x86/kernel/io_apic.c
  sched: fix warning in kernel/sched.c
  sched: move test_sd_parent() to an SMP section of sched.h
  sched: add SD_BALANCE_NEWIDLE at MC and CPU level for sched_mc>0
  sched: activate active load balancing in new idle cpus
  sched: bias task wakeups to preferred semi-idle packages
  sched: nominate preferred wakeup cpu
  sched: favour lower logical cpu number for sched_mc balance
  sched: framework for sched_mc/smt_power_savings=N
  sched: convert BALANCE_FOR_xx_POWER to inline functions
  x86: use possible_cpus=NUM to extend the possible cpus allowed
  x86: fix cpu_mask_to_apicid_and to include cpu_online_mask
  x86: update io_apic.c to the new cpumask code
  x86: Introduce topology_core_cpumask()/topology_thread_cpumask()
  x86: xen: use smp_call_function_many()
  x86: use work_on_cpu in x86/kernel/cpu/mcheck/mce_amd_64.c
  ...

Fixed up trivial conflict in kernel/time/tick-sched.c manually
2009-01-02 11:44:09 -08:00
Al Viro
18d8fda7c3 take init_fs to saner place
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-12-31 18:07:42 -05:00
Rusty Russell
320ab2b0b1 cpumask: convert struct clock_event_device to cpumask pointers.
Impact: change calling convention of existing clock_event APIs

struct clock_event_timer's cpumask field gets changed to take pointer,
as does the ->broadcast function.

Another single-patch change.  For safety, we BUG_ON() in
clockevents_register_device() if it's not set.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ingo Molnar <mingo@elte.hu>
2008-12-13 21:20:26 +10:30
Michael Hennerich
a5f0717e51 Blackfin arch: Fix bug - change cpufreq doesn't take effect on bf537 now
CCLK is variable: get current CCLK in show_cpuinfo

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 18:04:31 +08:00
Graf Yang
8eb3e3bfd5 Blackfin arch: Request the gpio resource when making it as an irq pin, avoiding override it.
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Mike Frysinger
dce783c5e4 Blackfin arch: add BUG_ON() checks to make sure we dont overflow the cplb tables
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:21 +08:00
Mike Frysinger
cb15e57cc7 Blackfin arch: noMMU CPLB lookup tables can be in L1 SRAM
- unify duplicate page_size_table definitions
 - make sure it is placed alongside the other cplb switching code

Pointed-out-by: Michael McTernan <mmcternan@airvana.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Mike Frysinger
05a717fbc8 Blackfin arch: do not include init sections in the kernel lock down as it gets released afterwards
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Mike Frysinger
3831638260 Blackfin arch: change return value
change return of close_cplbtab() and fill_cplbtab() to void since we
always return 0 and nowhere do we check this

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Mike Frysinger
4c5b8a648f Blackfin arch: remove pointless define IN_KERNEL
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Mike Frysinger
ff4c02e4be Blackfin arch: unify cplbinfo files
Merge MPU and noMPU version of CPLB info code to one common version.

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Mike Frysinger
55e359a825 Blackfin arch: remove BFIN_DMA_5XX option
Do not make BFIN_DMA_5XX optional since a large portion of our code
relies on dma functions existing

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Mike Frysinger
1b047d8cc5 Blackfin arch: cleanup the time.c code
- make the code a bit more readable
 - kill of warnings/ifdef mess a bit

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Mike Frysinger
36f649a55a Blackfin arch: do not define decode_instruction if hwtrace is turned off
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Mike Frysinger
b60705765a Blackfin arch: move out irq related functions
move irq related functions into asm/irq.h and out of the mondo asm/system.h

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Mike Frysinger
31fba6e752 Blackfin arch: introduce an IM_MEM macro to kgdb
create an IN_MEM() macro to simplify comparing an address in an on-chip
region of memory and make things readable

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Mike Frysinger
89c6c139a5 Blackfin arch: fix off-by-one errors on end of memory range
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Mike Frysinger
09c1db922d Blackfin arch: delete unused vars and add parenthesis to fixup warnings
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Mike Frysinger
bda07aac9d Blackfin arch: move fixed code into init section
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Mike Frysinger
f8c1b3909c Blackfin arch: remove superficial check on blackfin watchdog
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Mike Frysinger
b94919e2da Blackfin arch: dont export ack_bad_irq as no one else does
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Mike Frysinger
8a86176c4a Blackfin arch: overlay thread.usp over PT_USP
overlay thread.usp over PT_USP when getting the whole regfile to
match PT_USP behavior

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Sonic Zhang
8a0e9acfd1 Blackfin arch: Fix bug - hardware breakpoint doesn't always work in kgdb
Hardware breakpoint doesn't always work in kgdb. It works at the first
two times, but if you repeatedly trigger that hardware breakpoint, it
would slip over that point once in two times.

Fix it by always setting hw bp skip to 0. gdb does skip after hw bp trap.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Graf Yang
46fa5eecec Blackfin arch: SMP supporting patchset: some other misc code
Blackfin dual core BF561 processor can support SMP like features.
https://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:smp-like

In this patch, we provide SMP extend to some other misc code

Singed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:39 +08:00
Graf Yang
8f65873e47 Blackfin arch: SMP supporting patchset: Blackfin kernel and memory management code
Blackfin dual core BF561 processor can support SMP like features.
https://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:smp-like

In this patch, we provide SMP extend to Blackfin kernel and memory management code

Singed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Graf Yang
b8a989893c Blackfin arch: SMP supporting patchset: Blackfin CPLB related code
Blackfin dual core BF561 processor can support SMP like features.
https://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:smp-like

In this patch, we provide SMP extend to Blackfin CPLB related code

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Michael Hennerich
a4f0b32c33 Blackfin arch: Convert Blackfin GPIO driver to use common gpiolib/gpiochip infrastructure
- This patch adds support for ARCH_WANT_OPTIONAL_GPIOLIB.
 - It may be changed in future to ARCH_REQUIRE_GPIOLIB.
 - Change GPIO_BANK_NUM use DIV_ROUND_UP( , ) macro

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Bryan Wu
397861cd80 Blackfin arch: fix bug - gpio_bank() macros messed up bank number caculating with positioning a gpio
The whole story:

Before BF51x merged, all the MAX_BLACKFIN_GPIOS are integral multiple of GPIO_BANKSIZE (= 16).
But BF51x provides MAX_BLACKFIN_GPIOS = 40 which includes 3 banks and the 3rd bank has only 8
GPIO pins.

Therefore, gpio_bank() macros is correct when you try to find a GPIO in which bank (GPIO_35 is
in bank 2). But on BF51x gpio_bank(MAX_BLACKFIN_GPIOS) only gives out 2 banks instead of 3
banks for some static array initialization.

This patch add a new macros gpio_bank_n() and GPIO_BANK_NUM to do bank number caculating and
remain the gpio_bank() macros for positioning a gpio in which bank.

Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Michael Hennerich
abeb21efb1 Blackfin arch: remove most BUG_ON channel checks
keep BUG_ON in DMA request, free and set_dma_callback.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-29 11:06:03 +08:00
Michael Hennerich
e04f9f427b Blackfin arch: Remove useless SSYNCs in DMA code
Tons of SSYNC operation will impact the DMA performance

Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-28 18:18:47 +08:00
Michael Hennerich
a2ba8b1998 Blackfin arch: lookup channel2irq() only once
Add irq to struct dma_channel lookup channel2irq() only once,
since channel2irq() is fairly large on some Blackfin derivatives.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-28 18:19:29 +08:00
Mike Frysinger
6a87d29bc6 Blackfin arch: refine the gpio check
refine the gpio check in peripheral_request() so that it only
checks pins that can be used as both GPIO and a peripheral

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-28 16:16:29 +08:00
Jie Zhang
b2c2f30388 Blackfin arch: fix bug - shared lib function in L2 failed be called
Allow user space to access L2 SRAM.

Signed-off-by: Jie Zhang <jie.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-28 15:57:49 +08:00
Mike Frysinger
a2d03a1d8e Blackfin arch: unify port_setup() to reduce arch differences
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-28 15:53:37 +08:00
Mike Frysinger
6c7ec0ec93 Blackfin arch: unify peripheral_request() to reduce arch differences
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-28 15:49:59 +08:00
Mike Frysinger
1f7d373f47 Blackfin arch: fix cmp_label() so it doesnt incorrectly accept partial leading matches
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-28 15:47:11 +08:00
Mike Frysinger
27228b2e4c Blackfin arch: unify check_gpio() to reduce arch differences
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-28 15:45:42 +08:00
Mike Frysinger
72edff8dd4 Blackfin arch: fix incorrect limit check for bf54x check_gpio
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-28 15:42:13 +08:00
Mike Frysinger
588ba8199e Blackfin arch: remove unused local define
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-28 14:38:51 +08:00
Bryan Wu
2f6f4bcdd6 Blackfin arch: add support for Blackfin latest processor family BF51x
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:21 +08:00
Mike Frysinger
da986b9fff Blackfin arch: dont warn when running a kernel on the oldest supported silicon
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-28 13:58:15 +08:00
Robin Getz
4ee1c45337 Blackfin arch: Fix typo when adding CONFIG_DEBUG_VERBOSE
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-28 11:36:11 +08:00
Mike Frysinger
0f8befa1d1 Blackfin arch: drop unused exports and comment remaining exports
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-28 11:12:17 +08:00
Mike Frysinger
fe8015ce25 Blackfin arch: move EXPORT_SYMBOL to the place where it is actually defined
- kernel_thread
 - irq_flags
 - checksum

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-28 11:07:15 +08:00
Michael Hennerich
dc26aec25d Blackfin arch: BF538/9 Linux kernel Support
Add supporing for Blackfin BF538 and BF539 processors.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Mike Frysinger
3b1f26a50a Blackfin arch: don't copy bss when copying L1
when copying L1 regions, go to the start of bss rather
than end since we have code to zero it out already

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-27 18:21:43 +08:00
Graf Yang
6776cf4476 Blackfin arch: fix bug - Fail to boot jffs2 kernel for BF561 with SMP patch
only if the cplb block overlapped with kernel area, this cplb need be locked

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-27 18:12:53 +08:00
Tim Pepper
6a0bfff44e Blackfin arch: handle case of d_path() returning error in decode_address()
d_path() can return an error.  Most of its callers do something or other to
make up something sane in that case.  Do similar for blackfin's
decode_address() call to d_path().

Signed-off-by: Tim Pepper <lnxninja@linux.vnet.ibm.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-27 12:18:36 +08:00
Mike Frysinger
04be80ef0b Blackfin arch: move bfin_addr_dcachable() and friends into the cacheflush header where it belongs
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-16 23:33:53 +08:00
Mike Frysinger
a92946bc6a Blackfin arch: use the new bfin_addr_dcachable() function
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-16 23:25:34 +08:00
Linus Torvalds
54cebc68c8 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: (60 commits)
  Blackfin arch: make sure we include the fix for SPORT hysteresis when reprogramming clocks
  Blackfin arch: Fix bogus str_ident check in gpio code
  Blackfin arch: AD7879 Touchscreen driver
  Blackfin arch: introducing bfin_addr_dcachable
  Blackfin arch: fix a typo in comments
  Blackfin arch: Remove useless head file
  Blackfin arch: make sure L2 start and length are always defined (fixes building on BF542)
  Blackfin arch: use the Blackfin on-chip ROM to do software reset when possible
  Blackfin arch: update anomaly headers to match the latest sheet
  Blackfin arch: bfin_reset() is an internal reboot function ... everyone should go through machine_restart()
  Blackfin arch: print out error/warning if you are running on the incorrect CPU type
  Blackfin arch: remove non-bf54x ifdef logic since this file is only compiled on bf54x parts
  Blackfin arch: update board defconfigs
  Blackfin arch: Add optional verbose debug
  Blackfin arch: emulate a TTY over the EMUDAT/JTAG interface
  Blackfin arch: have is_user_addr_valid() check for overflows (like when address is -1)
  Blackfin arch: ptrace - fix off-by-one check on end of memory regions
  Blackfin arch: Enable framebuffer support for the BF526-EZkit TFT LCD display
  Blackfin arch: flash memory map and dm9000 resources updating
  Blackfin arch: early prink code still use uart core console functions to parse and set configure option string
  ...
2008-10-13 10:08:43 -07:00
Sonic Zhang
ab2375f2fe Blackfin Serial Driver: Fix bug - request UART2/3 peripheral mapped interrupts in PIO mode
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-13 09:51:38 -07:00
Michael Hennerich
e9fae189ca Blackfin arch: Fix bogus str_ident check in gpio code
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-13 11:35:22 +08:00
Vitja Makarov
58c35bd31f Blackfin arch: introducing bfin_addr_dcachable
This patch introduces bfin_addr_dcachable() predicate, that simply tests is
address in cachable region or not.

Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-13 15:23:56 +08:00
Bryan Wu
3094c981f2 Blackfin arch: fix a typo in comments
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-10 21:22:01 +08:00
Mike Frysinger
cdbf4c3c5f Blackfin arch: use the Blackfin on-chip ROM to do software reset when possible
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-13 11:33:43 +08:00
Mike Frysinger
9a6f5ae1f1 Blackfin arch: bfin_reset() is an internal reboot function ... everyone should go through machine_restart()
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-10 18:57:21 +08:00
Robin Getz
e482cad241 Blackfin arch: print out error/warning if you are running on the incorrect CPU type
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-10 18:21:45 +08:00
Robin Getz
9f06c38fb2 Blackfin arch: Add optional verbose debug
Add optional verbose debug - which when turned off, quiets down
userspace errors. Saves ~8k of code/data for production systems

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-10 18:13:21 +08:00
Mike Frysinger
a88c71e436 Blackfin arch: emulate a TTY over the EMUDAT/JTAG interface
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-10 17:37:52 +08:00
Mike Frysinger
3c08f1d122 Blackfin arch: have is_user_addr_valid() check for overflows (like when address is -1)
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-10 17:12:51 +08:00
Mike Frysinger
d207a8c768 Blackfin arch: ptrace - fix off-by-one check on end of memory regions
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-10 17:26:57 +08:00
Mike Frysinger
0c0497c257 Blackfin arch: Move all the silicon rev handling to one place
Move all the silicon rev handling to one place (Kconfig) and
make sure we warn if you are running on silicon that has not been tested on

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-09 17:32:28 +08:00
Robin Getz
1d5ff7e27d Blackfin arch: Fix bug - HW Errors never recover on BF548
The kernel does not properly clear the EBIU Error Master (EBIU_ERRMST) Register
on BF548, which causes the kernel to panic.

We need to make sure that we clear the EBIU_ERRMST (necessary on BF54x)

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-09 17:06:32 +08:00
Graf Yang
55f2feae3a Blackfin arch: correct icache size in show_cpuinfo(), let c_start() return proper pointer
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-09 15:37:47 +08:00
Mike Frysinger
f5a817e3f7 Blackfin arch: ptrace - make sure PT_ORIG_R0 and PT_ORIG_P0 offsets are declared
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-09 15:22:56 +08:00
Mike Frysinger
cb4c173d94 Blackfin arch: use existing ptrace_disable() func to clear TRACE_BITS and create the opposite ptrace_enable()
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-09 15:21:05 +08:00
Mike Frysinger
d3ab3a62f5 Blackfin arch: ptrace - cleanup debug messages and style
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-09 15:19:50 +08:00
Mike Frysinger
dabaad5b90 Blackfin arch: fix bug -- PTRACE_PEEKDATA does not seem to work which breaks umoven() in strace
Don't add arbitrary offset when peeking at data

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-09 15:17:36 +08:00
Sonic Zhang
f099f39acf Blackfin arch: Make L2 SRAM cacheable
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-09 14:11:57 +08:00
Sonic Zhang
27707d3e43 Blackfin arch: Fix bug - kernel build with config kernel debugging with remote gdb fails
Add some comment and fix duplicated VEC_EXCPT02

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-09 14:04:41 +08:00
Robin Getz
9df10281e1 Blackfin arch: Use DTEST rather than DMA to poke at L1 SRAM during exception context
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-08 18:03:33 +08:00
Graf Yang
5b04f271fe Blackfin arch: Modify some funtion names to more genernal ones
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-08 17:32:57 +08:00
Robin Getz
7d98c881ee Blackfin arch: Make sure we protect except 2 properly, and print out memory properly
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-08 16:29:01 +08:00
Mike Frysinger
74c04503d7 Blackfin arch: mark local gpio_error() as static
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-08 16:13:17 +08:00
Mike Frysinger
fffe53bee7 Blackfin arch: fix bug - sometimes there is no response to the hitting key in uboot for bf561-ezkit when running with 50mhz SCLK
use 10 delays rather than 7

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-08 14:46:09 +08:00
Robin Getz
5c64e0d510 Blackfin arch: Better error handling of unknown exceptions
Better error handling of unknown exceptions, allows userspace to do a
EXCPT n instruction for a not installed exception handler, and the
kernel doesn't crash (like it use to before this).

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-08 14:43:47 +08:00
Sonic Zhang
a5ac012924 Blackfin arch: add supporting for kgdb
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-13 14:07:19 +08:00
Bernd Schmidt
5d2e321306 Blackfin arch: fixing bug - under IRQ stress, running applications may wrongly trigger an ICPLB miss and be killed
Disable IRQs while frobbing the CPLB registers, to avoid accessing the
data in current_rwx_mask while it isn't covered by CPLBs.

Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-07 16:27:01 +08:00
Robin Getz
0c7a6b2135 Blackfin arch: add supporting for double fault debug handling
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-08 16:27:12 +08:00
Mike Frysinger
f4585a0847 Blackfin arch: only include asm/cplb.h when it is truly used
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-10-13 14:45:21 +08:00
Bryan Wu
639f657145 Blackfin arch: move include/asm-blackfin header files to arch/blackfin
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-27 10:51:02 +08:00
Mike Frysinger
c991dd92ab Blackfin arch: use %pF when printing out the double fault address so we get symbol names
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-14 14:57:26 +08:00
Robin Getz
cd8fb8df14 Blackfin arch: Print out doublefault addresses, so debug can occur
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-14 14:44:33 +08:00
Mike Frysinger
9216bbc838 Blackfin arch: mark some functions as __init as they are only called from __init functions
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-14 14:35:20 +08:00
Mike Frysinger
0e06b50dda Blackfin arch: cleanup cache lock code
- remove cheesy read_iloc() function
 - move invalidate_entire_icache function to lock.S
 - export proper prototypes for functions in lock.S
 - only build lock.S when BFIN_ICACHE_LOCK is enabled

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-14 14:29:57 +08:00
Robin Getz
d3d0ac23a3 Blackfin arch: Fix bug - when expanding the trace buffer, it does not print out the decoded instruction.
as pointed out by Michael McTernan in the forums, when expanding
the trace buffer, it does not print out the decoded instruction.

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-06 17:49:27 +08:00
Mike Frysinger
07aa7be570 Blackfin arch: convert L2 defines to be the same as the L1 defines
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-13 16:16:11 +08:00
Mike Frysinger
7e64acabfd Blackfin arch: move async memory programming into common setup_arch() as the banks dont really need to be setup fully as early as head.S
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-06 17:17:10 +08:00
Mike Frysinger
1375204611 Blackfin arch: make sure the BSS and kernel load address are 4 byte aligned
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-08-06 17:10:57 +08:00
Linus Torvalds
7f268a2ba7 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: (30 commits)
  Blackfin arch: If we double fault, rather than hang forever, reset
  Blackfin arch: When icache is off, make sure people know it
  Blackfin arch: Fix bug - skip single step in high priority interrupt handler instead of disabling all interrupts in single step debugging.
  Blackfin arch: cache the values of vco/sclk/cclk as the overhead of doing so (~24 bytes) is worth avoiding the software mult/div routines
  Blackfin arch: fix bug - IMDMA is not type struct dma_register
  Blackfin arch: check the EXTBANKS field of the DDRCTL1 register to see if we are using both memory banks
  Blackfin arch: Apply Bluetechnix CM-BF527 board support patch
  Blackfin arch: Add unwinding for stack info, and a little more detail on trace buffer
  Blackfin arch: Add ISP1760 board resources to BF548-EZKIT
  Blackfin arch: fix bug - detect 0.1 silicon revision BF527-EZKIT as 0.0 version
  Blackfin arch: add missing IORESOURCE_MEM flags to UART3
  Blackfin arch: Add return value check in bfin_sir_probe(), remove SSYNC().
  Blackfin arch:  Extend sram malloc to handle L2 SRAM.
  Blackfin arch: Remove useless config option.
  Blackfin arch:  change L1 malloc to base on slab cache and lists.
  Blackfin arch: use local labels and ENDPROC() markings
  Blackfin arch: Do not need this dualcore test module in kernel.
  Blackfin arch: Allow ptrace to peek and poke application data in L1 data SRAM.
  Blackfin arch: Add ANOMALY_05000368 workaround
  Blackfin arch: Functional power management support
  ...
2008-07-26 13:23:17 -07:00
Robin Getz
2d2009806d Blackfin arch: If we double fault, rather than hang forever, reset
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-26 19:41:40 +08:00
Robin Getz
9de3a0b697 Blackfin arch: When icache is off, make sure people know it
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-26 19:39:19 +08:00
Sonic Zhang
0d1cdd7ab6 Blackfin arch: Fix bug - skip single step in high priority interrupt handler instead of disabling all interrupts in single step debugging.
Skip single step if event priority of current instruction is higher than
that of the first instruction, from which gdb starts single step.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-26 18:54:38 +08:00
Mike Frysinger
3a2521fa75 Blackfin arch: cache the values of vco/sclk/cclk as the overhead of doing so (~24 bytes) is worth avoiding the software mult/div routines
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-26 18:52:56 +08:00
Michael Hennerich
377d43e7d0 Blackfin arch: fix bug - IMDMA is not type struct dma_register
TEMP Workaround - avoid access to PERIPHERAL_MAP

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-26 18:28:03 +08:00
Mike Frysinger
b1b154e503 Blackfin arch: check the EXTBANKS field of the DDRCTL1 register to see if we are using both memory banks
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-26 18:02:05 +08:00
Robin Getz
f09630bff5 Blackfin arch: Add unwinding for stack info, and a little more detail on trace buffer
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-26 19:45:46 +08:00
Sonic Zhang
262c3825a9 Blackfin arch: Extend sram malloc to handle L2 SRAM.
Extend system call to alloc L2 SRAM in application.
Automatically move following sections to L2 SRAM:
1. kernel built-in l2 attribute section
2. kernel module l2 attribute section
3. elf-fdpic application l2 attribute section

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-19 15:42:41 +08:00
Ingo Molnar
9b610fda0d Merge branch 'linus' into timers/nohz 2008-07-18 19:53:16 +02:00
Thomas Gleixner
b8f8c3cf0a nohz: prevent tick stop outside of the idle loop
Jack Ren and Eric Miao tracked down the following long standing
problem in the NOHZ code:

	scheduler switch to idle task
	enable interrupts

Window starts here

	----> interrupt happens (does not set NEED_RESCHED)
	      	irq_exit() stops the tick

	----> interrupt happens (does set NEED_RESCHED)

	return from schedule()
	
	cpu_idle(): preempt_disable();

Window ends here

The interrupts can happen at any point inside the race window. The
first interrupt stops the tick, the second one causes the scheduler to
rerun and switch away from idle again and we end up with the tick
disabled.

The fact that it needs two interrupts where the first one does not set
NEED_RESCHED and the second one does made the bug obscure and extremly
hard to reproduce and analyse. Kudos to Jack and Eric.

Solution: Limit the NOHZ functionality to the idle loop to make sure
that we can not run into such a situation ever again.

cpu_idle()
{
	preempt_disable();

	while(1) {
		 tick_nohz_stop_sched_tick(1); <- tell NOHZ code that we
		 			          are in the idle loop

		 while (!need_resched())
		       halt();

		 tick_nohz_restart_sched_tick(); <- disables NOHZ mode
		 preempt_enable_no_resched();
		 schedule();
		 preempt_disable();
	}
}

In hindsight we should have done this forever, but ... 

/me grabs a large brown paperbag.

Debugged-by: Jack Ren <jack.ren@marvell.com>, 
Debugged-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-07-18 18:10:28 +02:00
Yi Li
7dee62ac5a Blackfin arch: Do not need this dualcore test module in kernel.
Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-19 20:53:46 +08:00
Jie Zhang
6546eae4fd Blackfin arch: Allow ptrace to peek and poke application data in L1 data SRAM.
Signed-off-by: Jie Zhang <jie.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-15 16:15:40 +08:00
Michael Hennerich
2cfebf2bce Blackfin arch: Add ANOMALY_05000368 workaround
Possible RETS Register Corruption when Subroutine Is under 5 Cycles in Duration

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-16 16:59:05 +08:00
Michael Hennerich
1efc80b53e Blackfin arch: Functional power management support
Enable: PM_SUSPEND_MEM -> Blackfin Hibernate to SDRAM
This feature requires a special bootloader (u-boot)
supporting return from hibernate.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-19 16:57:32 +08:00
Michael Hennerich
4f13f548ce Blackfin arch: Fix BUG - JUMP error in kernel (relocation truncated to fit: R_pcrel12_jump_s)
Use long jump

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-15 16:38:28 +08:00
Michael Hennerich
99d95bbd48 Blackfin arch: Remove redundant kernel option
use kernel command line mem and max_mem bootargs to limit
availabe memory instead.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-07-14 17:04:14 +08:00
Bryan Wu
8d0a60032f Blackfin arch: fix up section mismatch warning
--
WARNING: vmlinux.o(.text+0x721a): Section mismatch in reference from the function ___fill_code_cplbtab() to the function .init.text:_fill_cplbtab()
The function ___fill_code_cplbtab() references
the function __init _fill_cplbtab().
This is often because ___fill_code_cplbtab lacks a __init
annotation or the annotation of _fill_cplbtab is wrong.

WARNING: vmlinux.o(.text+0x7238): Section mismatch in reference from the function ___fill_code_cplbtab() to the function .init.text:_fill_cplbtab()
The function ___fill_code_cplbtab() references
the function __init _fill_cplbtab().
This is often because ___fill_code_cplbtab lacks a __init
annotation or the annotation of _fill_cplbtab is wrong.

WARNING: vmlinux.o(.text+0x7250): Section mismatch in reference from the function ___fill_code_cplbtab() to the function .init.text:_fill_cplbtab()
The function ___fill_code_cplbtab() references
the function __init _fill_cplbtab().
This is often because ___fill_code_cplbtab lacks a __init
annotation or the annotation of _fill_cplbtab is wrong.

WARNING: vmlinux.o(.text+0x7264): Section mismatch in reference from the function ___fill_code_cplbtab() to the function .init.text:_fill_cplbtab()
The function ___fill_code_cplbtab() references
the function __init _fill_cplbtab().
This is often because ___fill_code_cplbtab lacks a __init
annotation or the annotation of _fill_cplbtab is wrong.

WARNING: vmlinux.o(.text+0x72a2): Section mismatch in reference from the function ___fill_data_cplbtab() to the function .init.text:_fill_cplbtab()
The function ___fill_data_cplbtab() references
the function __init _fill_cplbtab().
This is often because ___fill_data_cplbtab lacks a __init
annotation or the annotation of _fill_cplbtab is wrong.

WARNING: vmlinux.o(.text+0x72bc): Section mismatch in reference from the function ___fill_data_cplbtab() to the function .init.text:_fill_cplbtab()
The function ___fill_data_cplbtab() references
the function __init _fill_cplbtab().
This is often because ___fill_data_cplbtab lacks a __init
annotation or the annotation of _fill_cplbtab is wrong.

WARNING: vmlinux.o(.text+0x72d4): Section mismatch in reference from the function ___fill_data_cplbtab() to the function .init.text:_fill_cplbtab()
The function ___fill_data_cplbtab() references
the function __init _fill_cplbtab().
This is often because ___fill_data_cplbtab lacks a __init
annotation or the annotation of _fill_cplbtab is wrong.

WARNING: vmlinux.o(.text+0x72e8): Section mismatch in reference from the function ___fill_data_cplbtab() to the function .init.text:_fill_cplbtab()
The function ___fill_data_cplbtab() references
the function __init _fill_cplbtab().
This is often because ___fill_data_cplbtab lacks a __init
annotation or the annotation of _fill_cplbtab is wrong.
--

Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-06-25 12:41:51 +08:00
Sonic Zhang
71a7d15562 Blackfin arch: fix bug - kernel boot fails when Spinlock and rw-lock debugging enabled
Initialize the lock of bad_irq_desc properly.
The content of irq_desc array is replaced by bad_irq_desc in blackfin
arch irqchip init code. So, do it properly as common irq init code.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-06-25 12:02:07 +08:00
Mike Frysinger
bd628bd085 Blackfin arch: fixup warnings with the new cplb saved values
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-06-03 12:23:45 +08:00
Michael Hennerich
f086f23435 Blackfin arch: Cleanup no functional changes
Singed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-05-20 16:42:39 +08:00
Linus Torvalds
e23a5f6687 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  [PATCH] return to old errno choice in mkdir() et.al.
  [Patch] fs/binfmt_elf.c: fix wrong return values
  [PATCH] get rid of leak in compat_execve()
  [Patch] fs/binfmt_elf.c: fix a wrong free
  [PATCH] avoid multiplication overflows and signedness issues for max_fds
  [PATCH] dup_fd() part 4 - race fix
  [PATCH] dup_fd() - part 3
  [PATCH] dup_fd() part 2
  [PATCH] dup_fd() fixes, part 1
  [PATCH] take init_files to fs/file.c
2008-05-19 16:37:45 -07:00