Commit Graph

282 Commits

Author SHA1 Message Date
Magnus Damm
5f737b39be sh: add CONFIG_VIRTUALIZATION for virtio support
Add CONFIG_VIRTUALIZATION to the SH architecture
and include the virtio code there. Used to enable
the virtio drivers under QEMU.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-04-29 23:28:37 +09:00
Paul Mundt
b7386a09ce sh: make latencytop available on SMP, too.
The UP dependency was inherited from ARM, which seems to have run in to
it due to the stacktrace code not being available for SMP in certain
cases, as we don't have this particular limitation there is no specific
need to block on the SMP dependency.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-04-27 16:41:12 +09:00
Paul Mundt
763142d1ef sh: CPU hotplug support.
This adds preliminary support for CPU hotplug for SH SMP systems.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-04-26 19:08:55 +09:00
Paul Mundt
43b8774dc4 sh: intc: userimask support.
This adds support for hardware-assisted userspace irq masking for
special priority levels. Due to the SR.IMASK interactivity, only some
platforms implement this in hardware (including but not limited to
SH-4A interrupt controllers, and ARM-based SH-Mobile CPUs). Each CPU
needs to wire this up on its own, for now only SH7786 is wired up as an
example.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-04-13 14:43:03 +09:00
FUJITA Tomonori
5cabbb6277 pci-dma: sh: use include/linux/pci-dma.h
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-12 15:52:41 -08:00
Paul Mundt
37feecb0ae sh: Disable generic IRQ probing.
IRQ autoprobing hasn't actually worked for us at all since very early in
2.6, but no one seems to have noticed given that none of the drivers
that use it see much testing.

yenta_socket is the odd one out, and that depends on PCI IRQs which are
fixed on all SH platforms anyways. Consequently, turning off autoprobing
fixes up crashes triggered by yenta_socket and at least gets it working
again on r7785rp.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-02 19:17:42 +09:00
Paul Mundt
4b842c8571 sh: enable sparseirq for highlander and r2d.
highlander and r2d are the only remaining ones that were blocking
sparseirq being turned on by default, but it turns out that they already
work fine with it by virtue of register_intc_controller(). As such, we
can kill off the dependencies and turn it on by default.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-02 19:15:17 +09:00
Paul Mundt
deb9b22b89 sh: mach-dreamcast: Convert to sparseirq.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-02 18:01:55 +09:00
Paul Mundt
6eb6f98396 sh: hd6446x: Convert to sparseirq.
Follows the se7724 change and converts the hd64461 IRQ handling to
sparseirq.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-02 17:48:17 +09:00
Paul Mundt
c7a967273a sh: mach-se: Convert SH7724 solution engine FPGA to sparseirq.
This uses the new create_irq_nr() to build up the FPGA's desired virtual
IRQ mapping and permits us to finally flip on sparseirq for this board.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-02 17:38:04 +09:00
Paul Mundt
320e68da59 sh: support PCI domains.
Newer SH parts are now commonly shipping with multiple controllers, so
we wire up PCI domain support to deal with them. Shamelessly cloned from
the MIPS implementation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-29 22:38:13 +09:00
Paul Mundt
43a1839cb1 sh: SH7786 clock framework rewrite.
This rewrites the SH7786 clock framework support completely. It's
reworked to provide all of the DIV4 and MSTP function clocks. This brings
it in line with the current clock framework code and lets us drop SH7786
from the list of CPUs that require legacy CPG handling.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-19 19:37:14 +09:00
Paul Mundt
6d63e73d52 sh: Limit ioremap_prot() to 32bit pgprot parts.
Presently ioremap_prot() uses an unsigned long to pass the pgprot value
around. This results in the upper half of the pgprot being chomped when
using 64-bit pgprots on a 32-bit ABI (X2TLB and SH-5).

As the only users of ioremap_prot() are presently legacy parts, this
doesn't cause too much of an issue. In the future when the interface is
converted to use pgprot_t directly this can be re-enabled for the other
parts, too.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-19 14:00:14 +09:00
Paul Mundt
c7b16efb7d sh: Add support for LZO-compressed kernels.
Plugs in LZO along with the others.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-13 13:29:19 +09:00
Paul Mundt
644755e786 Merge branches 'sh/xstate', 'sh/hw-breakpoints' and 'sh/stable-updates' 2010-01-13 13:02:55 +09:00
Paul Mundt
ee2760ea58 sh: default to sparseirq.
As SH has a very sparse IRQ map by default, all new CPUs and boards
benefit from using sparseirq by default. Despite this, there are still a
few stragglers (mostly due to using a fixed IRQ range for their FPGA
IRQ mappings), and these still need to be converted over one by one. As
these are now in the minority, and we do not want to encourage this sort
of brain-damage in newer board ports, we force sparseirq on.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-12 13:48:27 +09:00
Paul Mundt
fa94ddea2b Merge branch 'master' into sh/hw-breakpoints 2010-01-06 15:49:08 +09:00
Paul Mundt
6fbfe8d7cd sh: select HAVE_HW_BREAKPOINT for all SUPERH32 CPUs.
All SH CPUs (with the exception of sh64) support the UBC, so select
HW_BREAKPOINT support by default. This fixes up the build for non-SH4A
targets.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-06 15:46:53 +09:00
Paul Mundt
8152a74bc0 sh: Only provide a PCLK definition for legacy CPG CPUs.
As CPUs are migrated over to more fully-featured clock frameworks of
their own and off of the legacy CPG code, they no longer have any real
need for defining the PCLK value. The PCLK define in itself is already
fairly misleading, as many boards get their input clocks from different
sources, making this value fairly arbitrary anyways.

Outside of the legacy CPG clock framework, the only place where this
value is used is for deriving CLOCK_TICK_RATE, which we set back to the
legacy PIT value that it was before the PCLK definitions were added in
the first place.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-12-29 11:09:30 +09:00
Paul Mundt
6c0ee6a4bb sh: hw-breakpoint support requires perf events.
This follows the x86 change to select perf events when hw_breakpoint
support is enabled. This fixes up build issues where perf events can
otherwise be disabled on their own.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-12-21 17:35:00 +09:00
Paul Mundt
6424db52e2 Merge branch 'master' into sh/hw-breakpoints
Conflict between FPU thread flag migration and debug
thread flag addition.

Conflicts:
	arch/sh/include/asm/thread_info.h
	arch/sh/include/asm/ubc.h
	arch/sh/kernel/process_32.c
2009-12-08 15:47:12 +09:00
Paul Mundt
09a0729477 sh: hw-breakpoints: Add preliminary support for SH-4A UBC.
This adds preliminary support for the SH-4A UBC to the hw-breakpoints API.
Presently only a single channel is implemented, and the ptrace interface
still needs to be converted. This is the first step to cleaning up the
long-standing UBC mess, making the UBC more generally accessible, and
finally making it SMP safe.

An additional abstraction will be layered on top of this as with the perf
events code to permit the various CPU families to wire up support for
their own specific UBCs, as many variations exist.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-12-08 15:02:27 +09:00
Paul Mundt
9b3b21f788 Merge branch 'sh/stable-updates' 2009-10-27 17:10:24 +09:00
Paul Mundt
72f0c137a5 sh: enable PERF_USE_VMALLOC across the board.
The vast majority of SH platforms want this, and the few that don't
aren't going to care one way or the other. Enable it across the board.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-27 17:08:55 +09:00
Paul Mundt
7693465d81 sh: Kill off superfluous arch/sh/drivers/pci/Kconfig.
Now that this contains a grand total of 1 Kconfig option, it's hardly
worth keeping split out. Roll CONFIG_PCI back in to the top-level
architecture Kconfig, along with the other bus types.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-27 10:36:55 +09:00
Paul Mundt
01be5d63fd sh: Revamp PCI DMA coherence Kconfig bits.
Leaving this configurable caused more trouble than it was ever worth, so
just make it explicit. Boards that are verified one way or the other can
fix up their selects accordingly. We presently default to non-coherent
for most platforms.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-27 10:35:02 +09:00
Paul Mundt
ffb4a73d89 sh: Fix hugetlbfs dependencies for SH-3 && MMU configurations.
The hugetlb dependencies presently depend on SUPERH && MMU while the
hugetlb page size definitions depend on CPU_SH4 or CPU_SH5. This
unfortunately allows SH-3 + MMU configurations to enable hugetlbfs
without a corresponding HPAGE_SHIFT definition, resulting in the build
blowing up.

As SH-3 doesn't support variable page sizes, we tighten up the
dependenies a bit to prevent hugetlbfs from being enabled. These days
we also have a shiny new SYS_SUPPORTS_HUGETLBFS, so switch to using
that rather than adding to the list of corner cases in fs/Kconfig.

Reported-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-27 07:22:37 +09:00
Paul Mundt
73c926bee0 sh: Convert to asm-generic/dma-mapping-common.h
This converts the old DMA mapping support to the new generic
dma-mapping-common.h abstraction.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-20 12:55:56 +09:00
Paul Mundt
cae19b5902 sh: Kill off legacy UBC wakeup cruft.
This code was added for some ancient SH-4 solution engines with peculiar
boot ROMs that did silly things to the UBC MSTP bits. None of these have
been in the wild for years, and these days the clock framework wraps up
the MSTP bits, meaning that the UBC code is one of the few interfaces
that is stomping MSTP bits underneath the clock framework. At this point
the risks far outweigh any benefit this code provided, so just kill it
off.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-16 18:20:42 +09:00
Paul Mundt
78aed4a63a Merge branch 'sh/stable-updates'
Conflicts:
	arch/sh/Kconfig
2009-10-16 18:16:02 +09:00
Paul Mundt
f875295c4b sh: Kill off stray HAVE_FTRACE_SYSCALLS reference.
This seems to have popped back in via some merge damage. Kill it off.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-16 18:14:19 +09:00
Paul Mundt
e4b053d96a sh: ftrace: Make code modification NMI safe.
This cribs the x86 implementation of ftrace_nmi_enter() and friends to
make ftrace_modify_code() NMI safe, particularly on SMP configurations.

For additional notes on the problems involved, see the comment below
ftrace_call_replace().

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-13 16:52:50 +09:00
Ingo Molnar
cdd6c482c9 perf: Do the big rename: Performance Counters -> Performance Events
Bye-bye Performance Counters, welcome Performance Events!

In the past few months the perfcounters subsystem has grown out its
initial role of counting hardware events, and has become (and is
becoming) a much broader generic event enumeration, reporting, logging,
monitoring, analysis facility.

Naming its core object 'perf_counter' and naming the subsystem
'perfcounters' has become more and more of a misnomer. With pending
code like hw-breakpoints support the 'counter' name is less and
less appropriate.

All in one, we've decided to rename the subsystem to 'performance
events' and to propagate this rename through all fields, variables
and API names. (in an ABI compatible fashion)

The word 'event' is also a bit shorter than 'counter' - which makes
it slightly more convenient to write/handle as well.

Thanks goes to Stephane Eranian who first observed this misnomer and
suggested a rename.

User-space tooling and ABI compatibility is not affected - this patch
should be function-invariant. (Also, defconfigs were not touched to
keep the size down.)

This patch has been generated via the following script:

  FILES=$(find * -type f | grep -vE 'oprofile|[^K]config')

  sed -i \
    -e 's/PERF_EVENT_/PERF_RECORD_/g' \
    -e 's/PERF_COUNTER/PERF_EVENT/g' \
    -e 's/perf_counter/perf_event/g' \
    -e 's/nb_counters/nb_events/g' \
    -e 's/swcounter/swevent/g' \
    -e 's/tpcounter_event/tp_event/g' \
    $FILES

  for N in $(find . -name perf_counter.[ch]); do
    M=$(echo $N | sed 's/perf_counter/perf_event/g')
    mv $N $M
  done

  FILES=$(find . -name perf_event.*)

  sed -i \
    -e 's/COUNTER_MASK/REG_MASK/g' \
    -e 's/COUNTER/EVENT/g' \
    -e 's/\<event\>/event_id/g' \
    -e 's/counter/event/g' \
    -e 's/Counter/Event/g' \
    $FILES

... to keep it as correct as possible. This script can also be
used by anyone who has pending perfcounters patches - it converts
a Linux kernel tree over to the new naming. We tried to time this
change to the point in time where the amount of pending patches
is the smallest: the end of the merge window.

Namespace clashes were fixed up in a preparatory patch - and some
stylistic fallout will be fixed up in a subsequent patch.

( NOTE: 'counters' are still the proper terminology when we deal
  with hardware registers - and these sed scripts are a bit
  over-eager in renaming them. I've undone some of that, but
  in case there's something left where 'counter' would be
  better than 'event' we can undo that on an individual basis
  instead of touching an otherwise nicely automated patch. )

Suggested-by: Stephane Eranian <eranian@google.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Paul Mackerras <paulus@samba.org>
Reviewed-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <linux-arch@vger.kernel.org>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-21 14:28:04 +02:00
Paul Mundt
a74f7e0410 sh: Wire up HAVE_SYSCALL_TRACEPOINTS.
This is necessary to get ftrace syscall tracing working again.. a fairly
trivial and mechanical change. The one benefit is that this can also be
enabled on sh64, despite not having its own ftrace port.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-09-16 14:30:34 +09:00
Pawel Moll
d724a9c9d5 sh: Allow for kernel command line concatenation.
So far kernel command line arguments could be passed in by a bootloader
or defined as CONFIG_CMDLINE, which completely overwriting the first one.

This change allows a developer to declare selected kernel parameters in
a kernel configuration (eg. project-specific defconfig), retaining
possibility of passing others by a bootloader.

The obvious examples of the first type are MTD partition or
bigphysarea-like region definitions, while "debug" option or network
configuration should be given by a bootloader or a JTAG boot script.

Signed-off-by: Pawel Moll <pawel.moll@st.com>
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-24 16:25:38 +09:00
Paul Mundt
c3144fc46f Merge branches 'sh/hwblk' and 'sh/pm-runtime' 2009-08-23 18:04:07 +09:00
Magnus Damm
ac2c596b57 sh: let ARCH_SHMOBILE select PM and PM_RUNTIME
With the Runtime PM driver changes in place, we must have
Runtime PM support in place. Otherwise there is no way to
enable clocks to the Runtime PM enabled hardware blocks.
This patch makes Runtime PM mandatory on SuperH Mobile.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-23 18:03:20 +09:00
Yoshihiro Shimoda
c01f0f1a4a sh: Add initial support for SH7757 CPU subtype
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-21 17:25:47 +09:00
Paul Mundt
07e88e1bfc sh: bzip2/lzma zImage support.
This plugs in bzip2 and lzma support for zImages.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11 13:21:19 -04:00
Paul Mundt
df8ce2595f sh: Tidy up gzip-based zImage decompression.
This brings the zImage handling in to the current century, in preparation
for handling the other compression types.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-12 01:37:30 +09:00
Paul Mundt
f686d8c11c Merge branches 'sh/ftrace' and 'sh/stable-updates' 2009-07-11 10:08:33 +09:00
Matt Fleming
327933f5d6 sh: Function graph tracer support
Add both dynamic and static function graph tracer support for sh.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-11 10:08:01 +09:00
Paul Mundt
7119888df1 Merge branches 'sh/ftrace' and 'sh/cachetlb' 2009-07-06 20:19:28 +09:00
Matt Fleming
c652d780c9 sh: Add ftrace syscall tracing support
Now that I've added TIF_SYSCALL_FTRACE the thread flags do not fit into
a single byte any more. Code testing them now needs to be aware of the
upper and lower bytes.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-06 20:16:33 +09:00
Matt Fleming
c1340c053b sh: Define HAVE_FUNCTION_TRACE_MCOUNT_TEST
Enable HAVE_FUNCTION_TRACE_MCOUNT_TEST and test the value of
function_trace_stop from our assembly code as opposed to using the
generic C function. This should optimise our mcount/ftrace code path.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-06 19:53:53 +09:00
Matt Fleming
c601a51af1 sh: Use bootmem ontop of lmb
Rework the bootmem allocator to use the lmb framework.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-03 16:16:54 +09:00
Paul Mundt
bb38c222e0 sh: Fix up HAVE_PERF_COUNTERS typo.
That's HAVE_PERF_COUNTERS not HAVE_PERF_COUNTER. This was right
initially but I seem to have screwed it up while re-typing it out
by hand on another machine when I checked it in. Hmph.

Reported-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-24 01:41:05 +09:00
Paul Mundt
2eb2a43682 sh: SH7786 SMP support.
SH7786 is roughly identical to SH-X3 proto SMP, though there are only 2
CPUs. This just wraps in to the existing SH-X3 SMP code with some minor
changes for SH7786, including wiring up the IPIs properly, enabling
IRQ_PER_CPU, and so forth.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-23 17:30:17 +09:00
Paul Mundt
2e046b9487 sh: Provide cpu_idle_wait() to fix up cpuidle/SMP build.
Crib the x86 cpu_idle_wait() implementation and shove it in with the
idle code, subsequently enabling ARCH_HAS_CPU_IDLE_WAIT.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-23 17:30:17 +09:00
Paul Mundt
3d3638da49 Merge branches 'sh/pci-express-integration', 'sh/rsk-updates', 'sh/platform-updates' and 'sh/perf_counter' 2009-06-17 16:37:26 +09:00