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CONFIG_MTD_PMC_MSP_RAMROOT doesn't exist in Kconfig, therefore removing all
references for it from the source code.
Signed-off-by: Christoph Egger <[email protected]>
To: Ralf Baechle <[email protected]>,
Yoichi Yuasa <[email protected]>, [email protected],
[email protected]
Cc: [email protected]
Acked-by: Shane McDonald <[email protected]>
Patchwork: https://patchwork.linux-mips.org/patch/1375/
Signed-off-by: Ralf Baechle <[email protected]>
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CONFIG_MTD_PB1550_BOOT, CONFIG_MTD_PB1550_USER doesn't exist in
Kconfig, therefore removing all references for it from the source
code.
Signed-off-by: Christoph Egger <[email protected]>
To: Manuel Lauss <[email protected]>,
To: [email protected]
To: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/1370/
Signed-off-by: Ralf Baechle <[email protected]>
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Signed-off-by: Ralf Baechle <[email protected]>
Signed-off-by: David Daney <[email protected]>
Patchwork: https://patchwork.linux-mips.org/patch/1504/
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Correct ASIC device register names and addresses for USB devices.
Signed-off-by: David VomLehn <[email protected]>
To: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/1258/
Signed-off-by: Ralf Baechle <[email protected]>
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Replace phys_to_dma()/dma_to_phys() looping algorithm with an O(1) algorithm
The approach taken is inspired by the sparse memory implementation: take a
certain number of high-order bits off the address them, use this as an
index into a table containing an offset to the desired address and add
it to the original value. There is a table for mapping physical addresses
to DMA addresses and another one for the reverse mapping. The table sizes
depend on how fine-grained the mappings need to be; Coarser granularity
less to smaller tables. On a processor with 32-bit physical and DMA
addresses, with 4 MIB granularity, memory usage is two 2048-byte arrays.
Each 32-byte cache line thus covers 64 MiB of address space.
Also, renames phys_to_bus() to phys_to_dma() and bus_to_phys() to
dma_to_phys() to align with kernel usage.
[Ralf: Fixed silly build breakage due to stackoverflow warning caused by
huge array on stack.]
Signed-off-by: David VomLehn <[email protected]>
To: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/1257/
Signed-off-by: Ralf Baechle <[email protected]>
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The include is unecessary and will when building the IP35 result in
recursive header inclusion spaghetti.
Signed-off-by: Ralf Baechle <[email protected]>
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With SLAB, it works without ARCH_KMALLOC_MINALIGN, but with SLOB/SLUB,
ARCH_KMALLOC_MINALIGN is required to ensure alignment of kmalloced
buffer.
Signed-off-by: Atsushi Nemoto <[email protected]>
To: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/1248/
Signed-off-by: Ralf Baechle <[email protected]>
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Conflicts:
tools/perf/Makefile
tools/perf/util/hist.c
Merge reason: Resolve the conflicts and update to latest upstream.
Signed-off-by: Ingo Molnar <[email protected]>
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For 64-bit, we must use DADDU and DSUBU.
Signed-off-by: David Daney <[email protected]>
To: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/1483/
Signed-off-by: Ralf Baechle <[email protected]>
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As a relativly new ABI N32 should only have received the getdents64(2) but
instead it only had getdents(2). This was noticed as a performance anomaly
in glibc.
Signed-off-by: Ralf Baechle <[email protected]>
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Merge reason: Pick up the latest perf fixes.
Signed-off-by: Ingo Molnar <[email protected]>
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When trying to netboot a Linksys WRT54GS WLAN router, the bootup fails,
because of following error message:
...
[ 0.424000] b44: b44.c:v2.0
[ 0.424000] b44: Invalid MAC address found in EEPROM
[ 0.432000] b44 ssb0:1: Problem fetching invariants of chip,aborting
[ 0.436000] b44: probe of ssb0:1 failed with error -22
...
The router uses a CFE bootloader, but most of the needed environment
variables for network card initialization, are not available from CFE
via printenv and even though not via cfe_getenv().
The required environment variables are saved in a special partition
in flash memory. The attached patch implement nvram_getenv and enables
bootup via NFS root on my router.
Most of the patch is extracted from the OpenWrt subversion repository and
stripped down and cleaned up to just fix this issue.
[Ralf: sorted out header file inclusions. Lots of unneded headers and such
that should have been included.]
Signed-off-by: Waldemar Brodkorb <[email protected]>
Reviewed-by: Phil Sutter <[email protected]>
To: [email protected]
Cc: Hauke Mehrtens <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1359/
Signed-off-by: Ralf Baechle <[email protected]>
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Split the low-level sleepcode into per-cpu functions instead of
relying on compile-time-defined cpu type.
Signed-off-by: Manuel Lauss <[email protected]>
To: Linux-MIPS <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1281/
Signed-off-by: Ralf Baechle <[email protected]>
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The return value of gpio_to_irq() is not a pointer but an integer.
Signed-off-by: Yoichi Yuasa <[email protected]>
Cc: linux-mips <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1280/
Signed-off-by: Ralf Baechle <[email protected]>
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This fixes a typo on the AR7_RESET_PERIPHERAL define.
Signed-off-by: Florian Fainelli <[email protected]>
To: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/1247/
Signed-off-by: Ralf Baechle <[email protected]>
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On 64bit, local_t is of size long, and thus we make local64_t an alias.
On 32bit, we fall back to atomic64_t. (architecture can provide optimized
32-bit version)
(This new facility is to be used by perf events optimizations.)
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: [email protected]
Cc: Andrew Morton <[email protected]>
Cc: Linus Torvalds <[email protected]>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <[email protected]>
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Signed-off-by: FUJITA Tomonori <[email protected]>
Cc: Ralf Baechle <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (25 commits)
MIPS: Use GCC __builtin_prefetch() to implement prefetch().
MIPS: Octeon: Serial port fixes for OCTEON simulator.
MIPS: Octeon: Get rid of early serial.
MIPS: AR7: prevent race between clock initialization and devices registration
MIPS: AR7: use ar7_has_high_vlynq() to determine watchdog base address
MIPS: BCM63xx: Avoid namespace clash on GPIO_DIR_{IN,OUT}
MIPS: MTX-1: Update defconfig
MIPS: BCM47xx: Update defconfig
MIPS: RB532: Update defconfig
MIPS: AR7: Update defconfig
RTC: rtc-cmos: Fix binary mode support
MIPS: Oprofile: Loongson: Cleanup the comments
MIPS: Oprofile: Loongson: Cleanup of the macros
MIPS: Oprofile: Loongson: Remove unused variable from loongson2_cpu_setup()
MIPS: Oprofile: Loongson: Remove useless parentheses
MIPS: Oprofile: Loongson: Unify macro for setting events
MIPS: nofpu and nodsp only affect CPU0
MIPS: Clean up tables for bootmem allocation
MIPS: Coding style cleanups of access of FCSR rounding mode bits
MIPS: Loongson 2F: Add gpio/gpioilb support
...
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GCC's __builtin_prefetch() was introduced a long time ago, all
supported GCC versions have it. Lets do what the big boys up in
linux/prefetch.h do, except we use '1' as the third parameter to
provoke 'PREF 0,...' and 'PREF 1,...' instead of other prefetch
hints.
This allows for better code generation. In theory the existing
embedded asm could be optimized, but the compiler has these builtins,
so there is really no point.
Signed-off-by: David Daney <[email protected]>
To: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/1235/
Signed-off-by: Ralf Baechle <[email protected]>
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This is too generic a name, so prefix it with BCM63XX_ to avoid potential
namespace clashes when including <asm/gpio.h>.
Signed-off-by: Florian Fainelli <[email protected]>
To: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/1171/
Signed-off-by: Ralf Baechle <[email protected]>
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Signed-off-by: Arnaud Patard <[email protected]>
To: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/1163/
Signed-off-by: Ralf Baechle <[email protected]>
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Add a sysdev for DBDMA PM.
Signed-off-by: Manuel Lauss <[email protected]>
To: Linux-MIPS <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1119/
Signed-off-by: Ralf Baechle <[email protected]>
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Use a sysdev to implement PM methods for the Au1000 interrupt controllers.
Signed-off-by: Manuel Lauss <[email protected]>
To: Linux-MIPS <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1114/
Signed-off-by: Ralf Baechle <[email protected]>
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Loongson doesn't support MIPSR2, therefore, MIPSR2 vectored interrupts
(cpu_has_vint) and MIPSR2 external interrupt controller mode
(cpu_has_veic) are 0.
Signed-off-by: Wu Zhangjin <[email protected]>
Cc: Linux-MIPS <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1112/
Signed-off-by: Ralf Baechle <[email protected]>
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The only way the debugger can handle a trap in inside rcu_lock,
notify_die, or atomic_notifier_call_chain without a recursive fault is
to have a low level "first opportunity handler" do_trap_or_bp() handler.
Generally this will be something the vast majority of folks will not
need, but for those who need it, it is added as a kernel .config
option called KGDB_LOW_LEVEL_TRAP.
Also added was a die notification for oops such that kdb can catch an
oops for analysis.
There appeared to be no obvious way to pass the struct pt_regs from
the original exception back to the stack back tracer, so a special
case was added to show_stack() for when kdb is active because you
generally desire to generally look at the back trace of the original
exception.
Signed-off-by: Jason Wessel <[email protected]>
Acked-by: Ralf Baechle <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (44 commits)
vlynq: make whole Kconfig-menu dependant on architecture
add descriptive comment for TIF_MEMDIE task flag declaration.
EEPROM: max6875: Header file cleanup
EEPROM: 93cx6: Header file cleanup
EEPROM: Header file cleanup
agp: use NULL instead of 0 when pointer is needed
rtc-v3020: make bitfield unsigned
PCI: make bitfield unsigned
jbd2: use NULL instead of 0 when pointer is needed
cciss: fix shadows sparse warning
doc: inode uses a mutex instead of a semaphore.
uml: i386: Avoid redefinition of NR_syscalls
fix "seperate" typos in comments
cocbalt_lcdfb: correct sections
doc: Change urls for sparse
Powerpc: wii: Fix typo in comment
i2o: cleanup some exit paths
Documentation/: it's -> its where appropriate
UML: Fix compiler warning due to missing task_struct declaration
UML: add kernel.h include to signal.c
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
lockdep: Reduce stack_trace usage
lockdep: No need to disable preemption in debug atomic ops
lockdep: Actually _dec_ in debug_atomic_dec
lockdep: Provide off case for redundant_hardirqs_on increment
lockdep: Simplify debug atomic ops
lockdep: Fix redundant_hardirqs_on incremented with irqs enabled
lockstat: Make lockstat counting per cpu
i8253: Convert i8253_lock to raw_spinlock
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In preparation for removing volatile from the atomic_t definition, this
patch adds a volatile cast to all the atomic read functions.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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In the FPU emulator code of the MIPS, the Cause bits of the FCSR register
are not currently writeable by the ctc1 instruction. In odd corner cases,
this can cause problems. For example, a case existed where a divide-by-zero
exception was generated by the FPU, and the signal handler attempted to
restore the FPU registers to their state before the exception occurred. In
this particular setup, writing the old value to the FCSR register would
cause another divide-by-zero exception to occur immediately. The solution
is to change the ctc1 instruction emulator code to allow the Cause bits of
the FCSR register to be writeable. This is the behaviour of the hardware
that the code is emulating.
This problem was found by Shane McDonald, but the credit for the fix goes
to Kevin Kissell. In Kevin's words:
I submit that the bug is indeed in that ctc_op: case of the emulator. The
Cause bits (17:12) are supposed to be writable by that instruction, but the
CTC1 emulation won't let them be updated by the instruction. I think that
actually if you just completely removed lines 387-388 [...] things would
work a good deal better. At least, it would be a more accurate emulation of
the architecturally defined FPU. If I wanted to be really, really pedantic
(which I sometimes do), I'd also protect the reserved bits that aren't
necessarily writable.
Signed-off-by: Shane McDonald <[email protected]>
To: [email protected]
To: [email protected]
To: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/1205/
Signed-off-by: Ralf Baechle <[email protected]>
---
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Signed-off-by: Andreas Dilger <[email protected]>
Acked-by: KOSAKI Motohiro <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
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Signed-off-by: Wu Zhangjin <[email protected]>
Cc: linux-mips <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1106/
Signed-off-by: Ralf Baechle <[email protected]>
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There's a typo in the LOONGSON_ADDRWIN_CFG macro. The cpu window mmap
register address should contain the destination parameters not the
source one. This has not been noticed because the code is only using
source = destination.
Signed-off-by: Arnaud Patard <[email protected]>
To: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/1162/
Signed-off-by: Ralf Baechle <[email protected]>
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This allows us to clean up the code by not having to explicitly code
checks for shift amounts greater than 32.
Signed-off-by: David Daney <[email protected]>
To: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/1153/
Signed-off-by: Ralf Baechle <[email protected]>
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The MIPS implementation of die() forgets to call notify_die() and thus notifiers
registered via register_die_notifier() are not called. This results in kgdb not
being activated on exceptions.
The only subtlety is that notify_die declares its regs argument w/o const, so
the const had to be removed from mips die() as well.
[Ralf: Fixed build error for SGI IP22 and IP28 platforms.]
Signed-off-by: Yury Polyanskiy <[email protected]>
Cc: [email protected]
Patchworks: http://patchwork.linux-mips.org/patch/1142/
Acked-by: Jason Wessel <[email protected]>
Signed-off-by: Ralf Baechle <[email protected]>
---
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Signed-off-by: Ralf Baechle <[email protected]>
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In the 64-bit kernel we use swapper_pg_dir for three different things.
1) xuseg mappings for kernel threads.
2) vmap mappings for all kernel-space accesses in xkseg.
3) vmap mappings for kernel modules in ksseg (kseg2).
Due to how the TLB refill handlers work, any mapping established in
xkseg or ksseg will also establish a xuseg mapping that should never
be used by the kernel.
In order to be able to use exceptions to trap NULL pointer
dereferences, we need to ensure that nothing is mapped at address
zero. Since vmap mappings in xkseg are reflected in xuseg, this means
we need to ensure that there are no vmap mappings established at the
start of xkseg. So we move back VMALLOC_START to avoid establishing
vmap mappings at the start of xkseg.
Signed-off-by: David Daney <[email protected]>
To: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/1129/
Signed-off-by: Ralf Baechle <[email protected]>
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This is needed for the fix of the M3 workaround.
Signed-off-by: Ralf Baechle <[email protected]>
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Previously it was unconditionally used on all Sibyte family SOCs. The
M3 bug has to be handled in the TLB exception handler which is extremly
performance sensitive, so this modification is expected to deliver around
2-3% performance improvment. This is important as required changes to the
M3 workaround will make it more costly.
Signed-off-by: Ralf Baechle <[email protected]>
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Fix typo: CONFIG_BCMCPU_IS_63xx does not exist;
CONFIG_BCM63XX_CPU_63xx is the valid config option.
Signed-off-by: Maxime Bizon <[email protected]>
To: [email protected]
Cc: Maxime Bizon <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/901/
Signed-off-by: Ralf Baechle <[email protected]>
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The BCm63xx SOC has two uarts. Some boards use the second one for
bluetooth. This patch changes platform device registration code to
handle this. Changes to the UART driver were already merged in
6a2c7eabfd09ca7986bf96b8958a87ca041a19d8.
Signed-off-by: Maxime Bizon <[email protected]>
To: [email protected]
Cc: Maxime Bizon <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/900/
Signed-off-by: Ralf Baechle <[email protected]>
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The number of GPIOs on BCM6338 is 8, while BCM6345 has only 16 GPIOs
available.
Signed-off-by: Florian Fainelli <[email protected]>
To: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/1016/
Signed-off-by: Ralf Baechle <[email protected]>
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As per chapter 15 "Errata: Issue of Out-of-order in loongson"[1] to work
around the Loongson 2F erratum we need to do:
"When switching from user mode to kernel mode, you should flush the
branch target history such as BTB and RAS."
[1] Chinese version: http://www.loongson.cn/uploadfile/file/200808211
[2] English version of chapter 15:
http://groups.google.com.hk/group/loongson-dev/msg/e0d2e220958f10a6?dmode=source
Signed-off-by: Wu Zhangjin <[email protected]>
Cc: [email protected]
Cc: Shinya Kuribayashi <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/1066/
Signed-off-by: Ralf Baechle <[email protected]>
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This is a follow on to the vdso patch.
Since all processes now have signal trampolines permanently mapped, we
can use those instead of putting the trampoline on the stack and
invalidating the corresponding icache across all CPUs. We also get rid
of a bunch of ICACHE_REFILLS_WORKAROUND_WAR code.
[Ralf: GDB 7.1 which has the necessary modifications to allow backtracing
over signal frames will supposedly be released tomorrow. The old signal
frame format obsoleted by this patch exists in two variations, for sane
processors and for those requiring ICACHE_REFILLS_WORKAROUND_WAR. So
there was never a GDB which did support backtracing over signal frames
on all MIPS systems. This convinved me this series should be applied and
pushed upstream as soon as possible.]
Signed-off-by: David Daney <[email protected]>
To: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/974/
Signed-off-by: Ralf Baechle <[email protected]>
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This is a preliminary patch to add a vdso to all user processes. Still
missing are ELF headers and .eh_frame information. But it is enough to
allow us to move signal trampolines off of the stack. Note that emulation
of branch delay slots in the FPU emulator still requires the stack.
We allocate a single page (the vdso) and write all possible signal
trampolines into it. The stack is moved down by one page and the vdso is
mapped into this space.
Signed-off-by: David Daney <[email protected]>
To: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/975/
Signed-off-by: Ralf Baechle <[email protected]>
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Signed-off-by: David Daney <[email protected]>
To: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/976/
Signed-off-by: Ralf Baechle <[email protected]>
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On AR7, we already redefine PHYS_OFFSET to match the system specifities, it
is however not sufficient when unsing dma_{map,unmap}_single, specifically
in the ethernet driver, we must also adjust CAC_ADDR and UNCAC_ADDR for DMA
to work correctly. This patch fixes the following issue, seen in cpmac_open:
ops[#1]:
Cpu 0
$ 0 : 00000000 10008400 a0f5b120 00000000
$ 4 : 94c59000 94270f64 00000020 00000010
$ 8 : 00000010 94103ce0 0000000a 94c03400
$12 : ffffffff 94c03408 94c03410 00000001
$16 : a0f5ba20 00000041 94c592c0 94c59200
$20 : 94c59000 000005ee 00002000 9438c8f0
$24 : 00000010 00000000
$28 : 94fac000 94fadd58 94390000 942724a8
Hi : 00000000
Lo : 00000001
epc : 94272518 cpmac_open+0x208/0x3f8
Not tainted
ra : 942724a8 cpmac_open+0x198/0x3f8
Status: 10008403 KERNEL EXL IE
Cause : 3080000c
BadVA : 00000000
PrId : 00018448 (MIPS 4KEc)
Modules linked in:
Process ifconfig (pid: 278, threadinfo=94fac000, task=94e79590, tls=00000000)
Stack : 7f8da120 2ab05cb0 94c59000 943356f0 00000000 943d0000 94c59000 943356f0
94c59030 943d0000 943c27c0 94fade10 00000000 94fade20 94c59000 9428e5a4
00000000 94c59000 00000041 94289768 94c59000 00000041 00001002 00001043
00000000 9428d810 00000000 94fade10 7f8da4e8 9428e6b8 00000000 7f8da4a8
7f8da4e8 00008914 00000000 942f7f2c 00000000 00000008 00408000 00008913
...
Call Trace:
[<94272518>] cpmac_open+0x208/0x3f8
[<9428e5a4>] dev_open+0x164/0x264
[<9428d810>] dev_change_flags+0xd0/0x1bc
[<942f7f2c>] devinet_ioctl+0x2d8/0x908
[<942771f8>] sock_ioctl+0x29c/0x2fc
[<941a0fb4>] vfs_ioctl+0x2c/0x7c
[<941a16ec>] do_vfs_ioctl+0x5dc/0x630
[<941a1790>] sys_ioctl+0x50/0x88
[<94101e10>] stack_done+0x20/0x3c
Signed-off-by: peter fuerst <[email protected]>
Signed-off-by: Florian Fainelli <[email protected]>
To: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/1050/
Signed-off-by: Ralf Baechle <[email protected]>
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kernel/elfcore.c includes <linux/elf.h> which includes the <asm/elf.h>. In
<asm/elf.h>, struct pt_regs is declared inside the parameter list of the
elf_dump_regs function which causes a kernel build warning.
Fixed by adding a forward declaration of struct pt_regs.
Signed-off-by: Ralf Baechle <[email protected]>
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Caused by 38b7827fcdd660f591d645bd3ae6644456a4773c - no, cpu_local_* was
not unused.
Signed-off-by: Ralf Baechle <[email protected]>
Cc: Christoph Lameter <[email protected]>
Acked-by: David Daney <[email protected]>
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All the architectures properly set NEED_DMA_MAP_STATE now so we can safely
add linux/pci-dma.h to linux/pci.h and remove the linux/pci-dma.h
inclusion in arch's asm/pci.h
Signed-off-by: FUJITA Tomonori <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Cc: Jesse Barnes <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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