Commit Graph

648 Commits

Author SHA1 Message Date
Linus Torvalds
ebc283118e Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] Increase cp0 compare clockevent min_delta_ns from 0x30 to 0x300.
  [MIPS] Cache: Provide more information on cache policy on bootup.
  [MIPS] Fix aliasing bug in copy_user_highpage, take 2.
  [MIPS] VPE loader: convert from struct class_ device to struct device
  [MIPS] MIPSsim: Fix booting from NFS root
  [MIPS] Alchemy: Get rid of au1xxx_irq_map_t.
  [MIPS] Alchemy: Get rid of au_ffz().
  [MIPS] Alchemy: Get rid of au_ffs().
  [MIPS] Alchemy: cleanup interrupt code.
  [MIPS] Lasat: Fix build by conversion to irq_cpu.c.
  [MIPS] Lasat: Add #ifndef ... #endif include warpper to lasatint.h.
  [MIPS] IP22: Enable -Werror.
  [MIPS] IP22: Fix warning.
  [MIPS] IP22: Complain if requesting the front panel irq failed.
  [MIPS] vmlinux.lds.S: Handle KPROBES_TEXT.
  [MIPS] vmlinux.lds.S: Fix handling of .notes in final link.
  [MIPS] vmlinux.lds.S: Remove duplicate comment.
  [MIPS] MSP71XX: Add workarounds file.
  [MIPS] IP32: Fix build by conversion to irq_cpu.c.
2007-10-16 10:44:35 -07:00
Ralf Baechle
8bb00d83d8 [MIPS] Increase cp0 compare clockevent min_delta_ns from 0x30 to 0x300.
Extremly low values are of dubious usefulness anyway but in this case
they actually were killing Qemu which simply wasn't able to complete
mips_next_event() within 0x30 100MHz cycles even on fast hosts.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-16 18:23:50 +01:00
Kay Sievers
736fad17b8 [MIPS] VPE loader: convert from struct class_ device to struct device
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-16 18:23:49 +01:00
Ralf Baechle
eae23f2c2a [MIPS] IP22: Fix warning.
CC      arch/mips/sgi-ip22/ip22-berr.o
arch/mips/sgi-ip22/ip22-berr.c: In function 'ip22_be_interrupt':
arch/mips/sgi-ip22/ip22-berr.c💯 warning: passing argument 2 of 'die_if_kernel' discards qualifiers from pointer target type

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-16 18:23:47 +01:00
Ralf Baechle
f70fd1b53c [MIPS] vmlinux.lds.S: Handle KPROBES_TEXT.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-16 18:23:46 +01:00
Ralf Baechle
603bb99c8b [MIPS] vmlinux.lds.S: Fix handling of .notes in final link.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-16 18:23:46 +01:00
Ralf Baechle
f5153ee0f5 [MIPS] vmlinux.lds.S: Remove duplicate comment.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-16 18:23:46 +01:00
Alexey Dobriyan
1bcf548293 Consolidate PTRACE_DETACH
Identical handlers of PTRACE_DETACH go into ptrace_request().
Not touching compat code.
Not touching archs that don't call ptrace_request.

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16 09:42:49 -07:00
Ralf Baechle
ece8a9e4f0 [MIPS] SMP: Fix use of cpumasks.
Noticed by Nick Piggin <nickpiggin@yahoo.com.au>.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-13 00:53:01 +01:00
Ralf Baechle
bdf5d42c6e [MIPS] VPE: reimplement ELF loader.
Loading ELF binaries based on the section table is totally wrong.  This
still leaves the other fat bug of referencing symbols in an executable
unfixed, so people better don't run strip on their binaries ...

As added bonus the new loader is also 23 lines shorter.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:19 +01:00
Franck Bui-Huu
dec8b1ca99 [MIPS] Add BUG_ON assertion for attempt to run kernel on the wrong CPU type.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:18 +01:00
Ralf Baechle
89a8a5a6c9 [MIPS] SMP: Use ISO C struct initializer for local structs.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:18 +01:00
Ralf Baechle
c50cade95b [MIPS] SMP: Kill useless casts.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:18 +01:00
Ralf Baechle
b5eb551145 [MIPS] Kill num_online_cpus() loops.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:18 +01:00
Ralf Baechle
bd6aeeffcc [MIPS] SMP: Implement smp_call_function_mask().
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:18 +01:00
Ralf Baechle
9966db25de [MIPS] Make facility to convert CPU types to strings generally available.
So far /proc/cpuinfo has been the only user but human readable processor
name are more useful than that for proc.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:17 +01:00
Ralf Baechle
21a151d8ca [MIPS] checkfiles: Fix "need space after that ','" errors.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:15 +01:00
Ralf Baechle
49a89efbbb [MIPS] Fix "no space between function name and open parenthesis" warnings.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:15 +01:00
Ralf Baechle
10cc352907 [MIPS] Allow hardwiring of the CPU type to a single type for optimization.
This saves a few k on systems which only ever ship with a single CPU type.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:15 +01:00
Ralf Baechle
d865bea4da [MIPS] i8253 PIT clocksource and clockevent drivers
Derived from the i386 variant with a few x86 complexities chopped off.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:10 +01:00
Ralf Baechle
ea5804015c [MIPS] Dyntick support for SMTC:
The kernel currently only supports broadcasting of the timer interrupt
from a single timer, not multicasting into two multicast groups of
processors.  So the implemented mechanism for SMTC works by broadcasting
the cp0 compare interrupt on VPE 0 and ignoring it on any additional VPEs.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:09 +01:00
Ralf Baechle
7bcf7717b6 [MIPS] Implement clockevents for R4000-style cp0 count/compare interrupt
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:09 +01:00
Ralf Baechle
91a2fcc886 [MIPS] Consolidate all variants of MIPS cp0 timer interrupt handlers.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:09 +01:00
Ralf Baechle
90b02340dc [MIPS] Switch from to_tm to rtc_time_to_tm
This replaces the MIPS-specific to_tm function with the generic
rtc_time_to_tm function.  The big difference between the two functions is
that rtc_time_to_tm uses epoch 70 while to_tm uses 1970, so the result of
rtc_time_to_tm needs to be fixed up.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:09 +01:00
Ralf Baechle
4b550488f8 [MIPS] Deforest the function pointer jungle in the time code.
Hard to follow who is pointing what to where and why so it's simply getting
in the way of the time code renovation.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:08 +01:00
Ralf Baechle
f5ff0a2802 [MIPS] Use generic NTP code for all MIPS platforms
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:08 +01:00
Ralf Baechle
05dc8c02bf [MIPS] ARC: Get rid of mips_machgroup
This has not been any serious user of this ill conceived thing since the
original invention in like '95.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:08 +01:00
Ralf Baechle
641e97f318 [MIPS] Sibyte: Replace SB1 cachecode with standard R4000 class cache code.
It may not be perfect yet but the SB1 code is badly borken and has
horrible performance issues.

Downside: This seriously breaks support for pass 1 parts of the BCM1250
where indexed cacheops don't work quite reliable but I seem to be the
last one on the planet with a pass 1 part anyway.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:05 +01:00
Maciej W. Rozycki
e5d77754c5 [MIPS] R3000 setup for kernel_thread()
Match the R4000 semantics for the initial state of interrupt/kernel
status register flags for the R3000 in kernel_thread().

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:04 +01:00
Sam Ravnborg
0f5c906442 [MIPS] Introduce a consistent style for vmlinux.lds.
This style will be consitent with all other arch's - soon.

In addition:
- Moved a few labels inside brackets for the sections they specify
  to prevent that linker alignmnet made them point before the section start

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:04 +01:00
Yoichi Yuasa
d5ab1a6910 [MIPS] Add GT641xx IRQ routines.
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:04 +01:00
Yoichi Yuasa
d80c1c0b22 [MIPS] i8295 cleanups.
o Move i8259 function declarations to include/asm-mips/i8259.h
 o Make i8259.c functions static where possible.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:04 +01:00
Ralf Baechle
ec70f65e3b [MIPS] Kill useless volatile keyword
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:03 +01:00
Thomas Gleixner
4e45171c4e [MIPS] cleanup struct irqaction initializers
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
CC: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:02 +01:00
Aurelien Jarno
1c0c13eb93 [MIPS] Add support for BCM47XX CPUs.
Note that the BCM4710 does not support the wait instruction, this
is not a mistake in the code.
    
It originally comes from the OpenWrt patches.
    
Cc: Michael Buesch <mb@bu3sch.de>
Cc: Felix Fietkau <nbd@openwrt.org>
Cc: Florian Schirmer <jolt@tuxbox.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:02 +01:00
Ralf Baechle
d87d0c930a [MIPS] SMTC: Microoptimize atomic_postincrement for non-weak consistency.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:45:58 +01:00
Kevin D. Kissell
f571eff0a2 [MIPS] IRQ Affinity Support for SMTC on Malta Platform
Signed-off-by: Kevin D. Kissell <kevink@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:45:57 +01:00
Maciej W. Rozycki
6f6b3940ed [MIPS] vmlinux.lds.S: Handle note sections
Store any note sections after the exception tables like the other
architectures do.  This is required for .note.gnu.build-id emitted from
binutils 2.18 onwards if nothing else.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-01 14:17:50 +01:00
Kyle McMartin
422efb17ee [MIPS] Fix fallocate on o32 binary compat ABI
MIPS was mistakenly forgetting to use the fallocate compat wrapper, which
I noticed while cleaning up all the duplicate fallocate wrappers.

Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-09-28 19:27:20 +01:00
Ralf Baechle
1146fe3050 [MIPS] SMTC: Make ack_bad_irq() safe with no IM backstop.
Issue reported and original patch by Kevin Kissel, cleaner (imho)
implementation by me.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-09-24 18:13:02 +01:00
Maciej W. Rozycki
09abbcffb3 [MIPS] cpu-bugs64.c: GCC 3.3 constraint workaround
Add a workaround to address warnings generated on the "n" constraint by
GCC 3.3 and below.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-09-19 19:33:14 +01:00
Ralf Baechle
50da469a79 [MIPS] 20Kc: Disable use of WAIT instruction.
Another issue with 20Kc's WAIT, waiting for more details.  With the
2.6.23 release immindent simply disable the use of WAIT instead of a
more fancy workaround.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-09-14 19:08:43 +01:00
Yoichi Yuasa
b1043cc7d9 [MIPS] Add #include <linux/profile.h> to arch/mips/kernel/time.c
It refer to CPU_PROFILING.

arch/mips/kernel/time.c: In function 'local_timer_interrupt':
arch/mips/kernel/time.c:142: error: implicit declaration of function 'profile_tick'
arch/mips/kernel/time.c:142: error: 'CPU_PROFILING' undeclared (first use in this function)
arch/mips/kernel/time.c:142: error: (Each undeclared identifier is reported only once
arch/mips/kernel/time.c:142: error: for each function it appears in.)

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-09-14 19:08:42 +01:00
Johannes Dickgreber
82411390a2 [MIPS] N32 needs to use compat_sys_futimesat
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-09-14 19:08:42 +01:00
Ralf Baechle
4d24c8f955 [MIPS] rtlx: Fix build error.
CC      arch/mips/kernel/rtlx.o
cc1: warnings being treated as errors
arch/mips/kernel/rtlx.c:59: warning: 'irq' defined but not used
arch/mips/kernel/rtlx.c:60: warning: 'irq_num' defined but not used

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-09-14 19:08:42 +01:00
Ralf Baechle
e606c109c4 [MIPS] rtlx: fix int vs. long bug.
CC      arch/mips/kernel/rtlx.o
arch/mips/kernel/rtlx.c: In function 'rtlx_init':
arch/mips/kernel/rtlx.c:114: warning: format '%x' expects type 'unsigned int', but argument 3 has type 'long unsigned int'

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-09-14 19:08:42 +01:00
Kyungmin Park
d77a283d9b [MIPS] i8259: Add disable method.
After 76d2160147, the qemu NE2000 was
frequently producing WATCHDOG timeouts.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-09-10 21:25:27 +01:00
Thiemo Seufer
948a34cf39 [MIPS] Maintain si_code field properly for FP exceptions
The appended patch adds code to update siginfo_t's si_code field. It
fixes e.g. a floating point overflow regression in the SBCL testsuite.

Signed-off-By: Thiemo Seufer <ths@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-08-27 02:16:59 +01:00
Thiemo Seufer
34412c7231 [MIPS] SMTC: Fix duplicate status dumps on NMI
Also removes the while(1); loop by propagating the ATTRIB_NORET of die()
to nmi_exception_handler.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-08-27 02:16:59 +01:00
Nicolas Schichan
97ce9a8d6c [MIPS] Unconditionally writeback and invalidate caches on kexec.
Signed-off-by: Nicolas Schichan <nschichan@freebox.fr>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-08-27 02:16:59 +01:00