Presently there's no SHmedia support plugged in for the dwarf unwinder.
While it's trivial to provide an SHmedia version of dwarf_read_arch_reg(),
the general sh64 case is more complicated in that the TLB miss handler
uses a locked down set of registers for optimization (including the frame
pointer) which we need for the unwind table generation.
While freeing up the frame pointer for use in the TLB miss handler is
reasonably straightforward, it's still more trouble than it's worth, so
we simply restrict the unwinder to 32-bit for now.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This adopts a trimmed down version of the MIPS port mangling interface
limited to the I/O swabbing for platforms that can't use little endian
accessors. For platforms with mixed I/O spaces involving PCI it will
still be necessary to enable byte swapping at the host controller level.
Attention needs to be paid to all of host controller endianness, CPU
endianness, and whether I/O accesses are explicitly swapped or not via
SWAP_IO_SPACE. Fortunately the platforms that need this are in the
minority.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
As described in e6fa16ab ("signal: sigprocmask() should do
retarget_shared_pending()") the modification of current->blocked is
incorrect as we need to check whether the signal we're about to block is
pending in the shared queue.
Also, use the new helper function introduced in commit 5e6292c0f2
("signal: add block_sigmask() for adding sigmask to current->blocked")
which centralises the code for updating current->blocked after
successfully delivering a signal and reduces the amount of duplicate code
across architectures. In the past some architectures got this code wrong,
so using this helper function should stop that from happening again.
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
get_signal_to_deliver() already resets the signal handler if SA_ONESHOT is
set in ka->sa.sa_flags, there's no need to do it again in handle_signal().
Furthermore, because we were modifying ka->sa.sa_handler (which is a copy
of sighand->action[]) instead of sighand->action[] the original code had
no effect on signal delivery.
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Adapt core SH architecture code for dma_map_ops changes: replace
alloc/free_coherent with generic alloc/free methods.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Polling for card hotplug events is a better option than using SDHI native
hotplug interrupt, because the latter option forces the controller to stay
permanently powered up and enabled.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Now that userspace is making use of kernel-provided sanitized headers for
working out supported interfaces, we need to be a bit more diligent with
matching the syscall definitions with their actual wiring/support state.
In theory it shouldn't hurt anything since sys_ni_syscall will ultimately
do the right thing, but there's also not much need to lie about legacy
x86 syscalls that we've never supported.
This tightens things up a bit for uClibc at least.
Suggested-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
If in big-endian mode, switch the PCI bus, too.
Tested on both litte-endian and big-endian sh7785lcr.
Signed-off-by: Thomas Schwinge <thomas@codesourcery.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: linux-sh@vger.kernel.org
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
CHCR of SH7763, SH7764, SH7780 and SH7785 is constitution same as SH7757.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
CHCR of SH7723 and SH7730 is constitution same as SH7724.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Other files are not done include definitely by asm/system.h made
include in asm/bitops.h.
This patch remove asm/system.h from asm/bitops.h.
-----
LANG=C make ARCH=sh CROSS_COMPILE=sh4-linux-gnu-
CHK include/linux/version.h
CHK include/generated/utsrelease.h
make[1]: `include/generated/machtypes.h' is up to date.
CC arch/sh/kernel/asm-offsets.s
In file included from include/asm-generic/getorder.h:7,
from /home/iwamatsu/work/kernel/sh-2.6-devel/arch/sh/include/asm/page.h:187,
from /home/iwamatsu/work/kernel/sh-2.6-devel/arch/sh/include/asm/mmu.h:38,
from /home/iwamatsu/work/kernel/sh-2.6-devel/arch/sh/include/asm/system_32.h:5,
from /home/iwamatsu/work/kernel/sh-2.6-devel/arch/sh/include/asm/system.h:179,
from /home/iwamatsu/work/kernel/sh-2.6-devel/arch/sh/include/asm/bitops.h:10,
from include/linux/bitops.h:22,
from include/linux/thread_info.h:52,
from include/linux/preempt.h:9,
from include/linux/spinlock.h:50,
from include/linux/mmzone.h:7,
from include/linux/gfp.h:4,
from include/linux/mm.h:8,
from arch/sh/kernel/asm-offsets.c:13:
include/linux/log2.h: In function '__ilog2_u32':
include/linux/log2.h:34: error: implicit declaration of function 'fls'
include/linux/log2.h: In function '__ilog2_u64':
include/linux/log2.h:42: error: implicit declaration of function 'fls64'
include/linux/log2.h: In function '__roundup_pow_of_two':
include/linux/log2.h:63: error: implicit declaration of function 'fls_long'
-----
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
All ARCHs have the same definition of MKIMAGE. Move it to Makefile.lib
to avoid duplication.
All ARCHs have similar definitions of cmd_uimage. Place a sufficiently
parameterized version in Makefile.lib to avoid duplication.
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Mike Frysinger <vapier@gentoo.org> [Blackfin]
Tested-by: Michal Simek <monstr@monstr.eu> [Microblaze]
Tested-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32]
Signed-off-by: Michal Marek <mmarek@suse.cz>
The motivation for this patchset was that I was looking at a way for a
qemu-kvm process, to exclude the guest memory from its core dump, which
can be quite large. There are already a number of filter flags in
/proc/<pid>/coredump_filter, however, these allow one to specify 'types'
of kernel memory, not specific address ranges (which is needed in this
case).
Since there are no more vma flags available, the first patch eliminates
the need for the 'VM_ALWAYSDUMP' flag. The flag is used internally by
the kernel to mark vdso and vsyscall pages. However, it is simple
enough to check if a vma covers a vdso or vsyscall page without the need
for this flag.
The second patch then replaces the 'VM_ALWAYSDUMP' flag with a new
'VM_NODUMP' flag, which can be set by userspace using new madvise flags:
'MADV_DONTDUMP', and unset via 'MADV_DODUMP'. The core dump filters
continue to work the same as before unless 'MADV_DONTDUMP' is set on the
region.
The qemu code which implements this features is at:
http://people.redhat.com/~jbaron/qemu-dump/qemu-dump.patch
In my testing the qemu core dump shrunk from 383MB -> 13MB with this
patch.
I also believe that the 'MADV_DONTDUMP' flag might be useful for
security sensitive apps, which might want to select which areas are
dumped.
This patch:
The VM_ALWAYSDUMP flag is currently used by the coredump code to
indicate that a vma is part of a vsyscall or vdso section. However, we
can determine if a vma is in one these sections by checking it against
the gate_vma and checking for a non-NULL return value from
arch_vma_name(). Thus, freeing a valuable vma bit.
Signed-off-by: Jason Baron <jbaron@redhat.com>
Acked-by: Roland McGrath <roland@hack.frob.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Avi Kivity <avi@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Enable core cpuidle timekeeping and irq enabling and remove that
handling from this code.
Signed-off-by: Robert Lee <rob.lee@linaro.org>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Convert calls to free_irq so that the second argument is the same as the
last argument of the corresponding call to request_irq. Without this
property, free_irq does nothing.
In the case of dmabrg.c the change is merely cosmetic - changing 0 to NULL.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
The struct sh_mobile_lcdc_chan_cfg platform data contains a list of
video modes. Name the lcd_cfg and num_cfg fields to reflect that they
describe video modes.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Presently the SH7785 code misdefines the UBC clock connection ID in
relation to the other CPUs. This makes it uniform, so that things like
single-stepping work again.
Signed-off-by: Thomas Schwinge <thomas@codesourcery.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
The latest sh_eth driver needs a resource of TSU in the channel 1,
if the controller has TSU registers. So, this patch adds the resource.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This has been obsolescent for a while; time for the final push.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: linux-sh@vger.kernel.org
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Correct spelling "erorr" to "error" in
arch/sh/drivers/pci/pci-sh7780.c
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Everybody uses the generic pcibios_resource_to_bus() supplied by the core
now, so remove the ARCH_HAS_GENERIC_PCI_OFFSETS used during conversion.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tell the PCI core about host bridge address translation so it can take
care of bus-to-resource conversion for us.
CC: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Current FSI got each PortA/B parameter by porta_flags/portb_flags from platform.
And .set_rate function was shared for PortA/B.
This structure was not readable and not flexible.
This patch adds sh_fsi_port_info, and its own settings was added on each platform.
it is preparation for DMAEngine support
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Paul Mundt