This kernel support is needed by the user-space tool:oprofile to profile
linux kernel or applications via loongson2 performance counters. you can
enable this driver via CONFIG_OPROFILE = y or m.

On Loongson2 there are two performance counters, each one can count 16
events respectively. when anyone of the performance counter overflows, an
interrupt will be generated and is routed to the IRQ MIPS_CPU_IRQ_BASE + 6.
Signed-off-by: NYanhua <yanh@lemote.com>
Signed-off-by: NWu Zhangjin <wuzj@lemote.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

RTC_LIB is selected by MIPS by default, and therefore, the legacy RTC
driver is disabled. but fortunately, RTC_LIB not works on fulong, so,
enabling the legcy RTC driver is needed, otherwise, the tools like
hwclock will not work.
Signed-off-by: NWu Zhangjin <wuzj@lemote.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Fixup the wrong original comment of pcimap, and make the source code more
understandable. and also, some new extra consideration is added in.
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

With the help of script/checkpatch.pl, i have cleaned up the coding
style.

1. remove un-needed header files and tune some comments.
2. remove some un-needed { }

add a new header file loongson.h:

3. move some common header files to loongson.h
4. move some common extern declartions to loongson.h

and this new header file is needed for future loongson2f support.
Signed-off-by: NWu Zhangjin <wuzj@lemote.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This patch split the old initilization and setup implementation to
several file, one file one logic function.

the other main changes include:

	1. as the script/checkpatch.pl suggests, use strict_strtol instead
	of simple_strtol in arch/mips/lemote/lm2e/cmdline.c

	2. use the existed macros in asm/mips-boards/bonito64.h as the
	arguments of set_io_port_base() and remove the un-needed ones in
	asm/mach-lemote/pci.h
Signed-off-by: NWu Zhangjin <wuzj@lemote.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

mips_io_port_base is initialized via set_io_port_base() in
arch/mips/lemote/lm2e/setup.c, we can use it directly here.
Signed-off-by: NWu Zhangjin <wuzj@lemote.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Several magic numbers have been replaced by relative macros, which will be
more readable and understandable.
Signed-off-by: NWu Zhangjin <wuzj@lemote.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

The implmentation of loongson2e_power_off and loongson2e_halt is almostly
the same, just preserve one of them.
Signed-off-by: NWu Zhangjin <wuzj@lemote.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This patch is based on the implementation in the lm2e-fixes branch of
Philippe's git://git.linux-cisco.org/linux-mips.git and the
malta-specific early_printk implementation.
Signed-off-by: NWu Zhangjin <wuzj@lemote.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Since the re-implementation of kgdb by commit
88547001 the platform-specific version
has become superfluous, remove it.
Signed-off-by: NWu Zhangjin <wuzj@lemote.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Removes the existing implementation of early_printk for fulong.  The old
implementation was based on the outdated board-specific dbg_io.c.

Since commit 8d60a903 dbg_io.c is not longer
needed; it will be removed by the next patch, and a new implementation of
early_printk will be added later.
Signed-off-by: NWu Zhangjin <wuzj@lemote.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Since 2.6.11-rc1 there is a prototype in <linux/smp.h>.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Error handling code following a kzalloc should free the allocated data.
Error handling code following an ioremap should iounmap the allocated data.

The semantic match that finds the first problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@r exists@
local idexpression x;
statement S;
expression E;
identifier f,f1,l;
position p1,p2;
expression *ptr != NULL;
@@

x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
<... when != x
     when != if (...) { <+...x...+> }
(
x->f1 = E
|
 (x->f1 == NULL || ...)
|
 f(...,x->f1,...)
)
...>
(
 return \(0\|<+...x...+>\|ptr\);
|
 return@p2 ...;
)

@script:python@
p1 << r.p1;
p2 << r.p2;
@@

print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>
Signed-off-by: NJulia Lawall <julia@diku.dk>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Some TC35815 variants (i.e. TX493[89] internal ether) report existance of
PM registers though they are not supported.  Disable PM features by
clearing pdev->pm_cap.
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

page.h includes ifndef __ASSEMBLY__ guards, but PAGE_SIZE and some other
constants are defined using "1UL", which the assembler does not support.
Use the _AC macro from const.h to make them available to assembly (and
linker scripts).
Signed-off-by: NNelson Elhage <nelhage@ksplice.com>
Signed-off-by: NTim Abbott <tabbott@ksplice.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Some drivers use gpio_request/gpio_free regardless of whether
gpiolib is actually built;  add stubs to work around the ensuing
compile failures.
Signed-off-by: NManuel Lauss <manuel.lauss@gmail.com>
Tested-by: NFlorian Fainelli <florian@openwrt.org>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Header needed for current_cpu_data which expands to smp_processor_id().
However, linux/smp.h can't be included into asm/cpu-info.h due to horrible
circular dependencies, so plug it here.
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

The current code only checks CCA of 0 when deciding if a dummy read is
needed.  Since the kernel can (and does) use other CCAs we need to
mask out the CCA bits from the address.  Since the address constant
now fits in 16 bits, there is an added benefit that smaller code is
generated.
Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

If we reach the test just below the loop with a `timeout' value of 0,
this does not mean that the timeout caused the loop to end, but rather
the `smi_rd.s.pending', in the last iteration. If timeout caused the
loop to end, then `timeout' is -1, not 0.

Since this can occur only in the last iteration, it is not very likely
to be a problem. By changing the post- to prefix decrement we ensure
that a timeout of 0 does mean it timed out.
Signed-off-by: NRoel Kluin <roel.kluin@gmail.com>
Acked-by: NDavid Daney <ddaney@caviumnetworks.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

<asm/delay.h> will break if HZ isn't defined.  In 2.6.26 and later we're
usually lucky ...
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

* 'for-linus' of git://oss.sgi.com/xfs/xfs: (39 commits)
  xfs: includecheck fix for fs/xfs/xfs_iops.c
  xfs: switch to seq_file
  xfs: Record new maintainer information
  xfs: use correct log reservation when handling ENOSPC in xfs_create
  xfs: xfs_showargs() reports group *and* project quotas enabled
  xfs: un-static xfs_inobt_lookup
  xfs: actually enable the swapext compat handler
  xfs: simplify xfs_trans_iget
  xfs: merge fsync and O_SYNC handling
  xfs: speed up free inode search
  xfs: rationalize xfs_inobt_lookup*
  xfs: untangle xfs_dialloc
  xfs: factor out debug checks from xfs_dialloc and xfs_difree
  xfs: improve xfs_inobt_update prototype
  xfs: improve xfs_inobt_get_rec prototype
  xfs: factor out inode initialisation
  fs/xfs: Correct redundant test
  xfs: remove XFS_INO64_OFFSET
  un-static xfs_read_agf
  xfs: add more statics & drop some unused functions
  ...

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: (75 commits)
  Blackfin: update ftrace for latest toolchain
  Blackfin: fix elf_fpregset_t definition
  Blackfin: unify cache init functions
  Blackfin: swap clocksource ratings for gptimer/cycles
  Blackfin: update ftrace_push_return_trace() breakage
  Blackfin: update cm board resources
  Blackfin: cm-bf537u: split board from cm-bf537e
  Blackfin: bf538-ezkit: add SPI IRQ resources
  Blackfin: increase default async timings for parallel flashes
  Blackfin: add ICPLB coverage for async banks
  Blackfin: use KERN_ALERT in all kgdb_test output
  Blackfin: fix BF54x SPI CS resources
  Blackfin: fix typo in isram_write()
  Blackfin: bf537-stamp: add adp5588 gpio resources
  Blackfin: add some isram-driver self tests
  Blackfin: workaround anomaly 05000283
  Blackfin: fix spelling in a few comments
  Blackfin: use raw_smp_processor_id() in exception code
  Blackfin: remove useless duplicated assignment in gpio code
  Blackfin: Fix link errors with binutils 2.19 and GCC 4.3
  ...

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: (53 commits)
  m68knommu: Make PAGE_SIZE available to assembly files.
  m68knommu: fix ColdFire definition of CLOCK_TICK_RATE
  m68knommu: set multi-function pins for ethernet when enabled
  m68knommu: remove special interrupt handling code for ne2k support
  m68knommu: relax IO_SPACE_LIMIT setting
  m68knommu: remove ColdFire direct interrupt register access
  m68knommu: create a speciailized ColdFire 5272 interrupt controller
  m68knommu: add support for second interrupt controller of ColdFire 5249
  m68knommu: clean up old ColdFire timer irq setup
  m68knommu: map ColdFire interrupts to correct masking bits
  m68knommu: clean up ColdFire 532x CPU timer setup
  m68knommu: simplify ColdFire "timers" clock initialization
  m68knommu: support code to mask external interrupts on old ColdFire CPU's
  m68knommu: merge old ColdFire interrupt controller masking macros
  m68knommu: remove duplicate ColdFire mcf_autovector() code
  m68knommu: move ColdFire INTC definitions to new include file
  m68knommu: mask off all interrupts in ColdFire intc-simr controller
  m68knommu: remove timer device interrupt setup for ColdFire 532x
  m68knommu: remove interrupt masking from ColdFire pit timer
  m68knommu: remove unecessary interrupt level setting in ColdFire 520x setup
  ...

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  hwmon: (lm85) Don't bind to Winbond/Nuvoton WPCD377I
  hwmon: (pcf8591) Documentation clean-ups
  hwmon: Clearly mark ACPI drivers as such
  hwmon: Use resource_size
  hwmon: Include <linux/io.h> instead of <asm/io.h>
  hwmon: (tmp421) Add documentation
  hwmon: Add driver for Texas Instruments TMP421/422/423 sensor chips
  hwmon-vid: Ignore 6th VID pin of AMD family 0Fh processors
  hwmon: (asus_atk0110) Add maintainer information
  hwmon: (abituguru3) Support multiple DMI strings per chip ID

* 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb:
  uwb: avoid radio controller reset loops
  uwb: stop uwbd thread if rc->start() fails
  uwb: handle radio controller events with out-of-range IDs correctly

The mcount support that was finally added to the Blackfin gcc port isn't
exactly the same as what ftrace was developed against.  Now that the final
gcc version is in place, update the ftrace code to match.

While updating this, fix the swapped arguments to the tracer (signature is
(ip, parent_ip) while we were passing (parent_ip, ip)).
Signed-off-by: NYi Li <yi.li@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

The elf_fpregset_t type relied on an empty struct in the asm/user.h, but
the transition to asm-generic/user.h dropped that empty struct.  Rather
than restore this useless struct, define the only user (elf_fpregset_t)
as an empty struct itself.  This fixes building when ELF dump support is
enabled.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

The CPLB implementations (mpu/nompu) had exact copies of the cacheinit
code.  Even the i/d cache functions are largely the same.  So unify them
both in the common kernel cache code.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

The cycles clocksource is a higher resolution than the gptimer one, so
make sure the ratings field reflects this.
Signed-off-by: NGraf Yang <graf.yang@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Commit 71e308a2 updated ftrace_push_return_trace() prototype but didn't
update the Blackfin ftrace code, so things broke.  Since we don't support
the new stuff yet, call it with stub values.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Signed-off-by: NHarald Krapfenbauer <Harald.Krapfenbauer@bluetechnix.at>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

The cm-bf537u module, while similar to the cm-bf537e, is different enough
to warrant its own resources.  It has a USB controller but no PHY.
Signed-off-by: NHarald Krapfenbauer <Harald.Krapfenbauer@bluetechnix.at>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Signed-off-by: NBarry Song <barry.song@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

The default async timings are a little too fast for the parallel flash
that is attached by default to the async banks.  So slow things down a bit
so accessing the hardware is stable.
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

When doing XIP, we need to execute out of the async banks, so we need
ICPLBs to allow this.
Signed-off-by: NBernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Most messages are already using KERN_ALERT, so be consistent to make
things easier to check with test scripts.
Signed-off-by: NMingquan Pan <grace.pan@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>