Commit Graph

475 Commits

Author SHA1 Message Date
Ralf Baechle 9007c9a2b0 [MIPS] SB1: Check for -mno-sched-prolog if building corelis debug kernel.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-18 16:59:31 +00:00
Ralf Baechle a904f74785 [MIPS] Sibyte: Fix race in sb1250_gettimeoffset().
From Dave Johnson <djohnson+linuxmips@sw.starentnetworks.com>:
    
sb1250_gettimeoffset() simply reads the current cpu 0 timer remaining
value, however once this counter reaches 0 and the interrupt is raised,
it immediately resets and begins to count down again.
    
If sb1250_gettimeoffset() is called on cpu 1 via do_gettimeofday() after
the timer has reset but prior to cpu 0 processing the interrupt and
taking write_seqlock() in timer_interrupt() it will return a full value
(or close to it) causing time to jump backwards 1ms. Once cpu 0 handles
the interrupt and timer_interrupt() gets far enough along it will jump
forward 1ms.
    
Fix this problem by implementing mips_hpt_*() on sb1250 using a spare
timer unrelated to the existing periodic interrupt timers. It runs at
1Mhz with a full 23bit counter.  This eliminated the custom
do_gettimeoffset() for sb1250 and allowed use of the generic
fixed_rate_gettimeoffset() using mips_hpt_*() and timerhi/timerlo.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-18 16:59:30 +00:00
Ralf Baechle 4308cb1628 [MIPS] Sibyte: Fix interrupt timer off by one bug.
From Dave Johnson <djohnson+linuxmips@sw.starentnetworks.com>:
    
The timers need to be loaded with 1 less than the desired interval not
the interval itself.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-18 16:59:30 +00:00
Ralf Baechle d6bd0e6b32 [MIPS] Protect more of timer_interrupt() by xtime_lock.
From Dave Johnson <djohnson+linuxmips@sw.starentnetworks.com>:

* do_timer() expects the arch-specific handler to take the lock as it
  modifies jiffies[_64] and xtime.
* writing timerhi/lo in timer_interrupt() will mess up
  fixed_rate_gettimeoffset() which reads timerhi/lo.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-18 16:59:29 +00:00
Matej Kupljen 66a9a4ffda [MIPS] Simple patch to power off DBAU1200
Signed-off-by: Matej Kupljen <matej.kupljen@ultra.si>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-18 16:59:28 +00:00
Sergei Shtylylov 86dde15b3d [MIPS] Fix DBAu1550 software power off.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-18 16:59:27 +00:00
Atsushi Nemoto de62893bc0 [MIPS] local_r4k_flush_cache_page fix
If dcache_size != icache_size or dcache_size != scache_size, or
set-associative cache, icache/scache does not flushed properly.  Make
blast_?cache_page_indexed() masks its index value correctly.  Also,
use physical address for physically indexed pcache/scache.
    
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-18 16:59:27 +00:00
Ralf Baechle 3a2f735700 [MIPS] Get rid of the IP22-specific code in arclib.
This breaks the kernel build if sgiwd93 was configured as a module.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-18 16:59:26 +00:00
Ralf Baechle 6218cf4410 [MIPS] Always pass -msoft-float.
Some people still haven't heared that fp in the kernel is forbidden.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-09 18:05:10 +00:00
Ralf Baechle 1443e483e3 [MIPS] Scatter a bunch of __init over tlbex.c.
Found by make buildcheck.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-09 18:05:10 +00:00
Ralf Baechle 3367fd5075 [MIPS] Momentum: Resurrect after things were moved around a while ago.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-09 18:05:09 +00:00
Ralf Baechle bb7d83f744 [MIPS] Discard .exit.text at runtime.
At times gcc will place bits of __exit functions into .rodata.  If
compiled into the kernle itself we used to discard .exit.text - but
not the bits left in .rodata.  While harmless this did at times result
in a large number of warnings.  So until gcc fixes this, discard
.exit.text at runtime.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-09 18:05:09 +00:00
Ralf Baechle ec28f30657 [MIPS] Enable highmem for all MIPS32 and MIPS64 processors.
In case a particular system doesn't support highmem the runtime checks
will ensure nothing bad is going to happen.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-09 18:05:08 +00:00
Ralf Baechle cec2f0ca29 [MIPS] A struct console.setup function may not be __init.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-09 18:05:07 +00:00
Atsushi Nemoto 800d11420d [MIPS] Use USECS_PER_SEC / HZ instead of tick_usec in do_gettimeofday.
The 'tick_usec' is USER_HZ period in usec.  do_gettimeofday() should
use kernel HZ value.
    
Here is a patch for MIPS.  It seems m32r, m68k and sparc have same
problem though their HZ and USER_HZ are same for now.
    
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-01 19:22:22 +00:00
Ralf Baechle 778e2ac597 [MIPS] Fix build error on processors that don's support copy-on-write.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-28 17:04:20 +00:00
Ralf Baechle 4debe4f963 [MIPS] Initialize S-cache function pointers even on S-cache-less CPUs.
When a CPU has no scache, the scache flushing functions currently
aren't getting initialized and the NULL pointer is eventually called
as a function.  Initialize the scache flushing functions as a noop
when there's no scache.
    
Initial patch by me and most of the debugging done by Martin Michlmayr.
    
Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-28 17:04:19 +00:00
Atsushi Nemoto 2fd628fe25 [MIPS] Use generic compat routines for readdir, getdents
Not just cleanup but also fixes O32 readdir(2) emulation.
    
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-27 17:30:37 +00:00
Ralf Baechle 9b6695a8ad [MIPS] SMP: Fix initialization order bug.
A recent change requires cpu_possible_map to be initialized before
smp_sched_init() but most MIPS platforms were initializing their
processors in the prom_prepare_cpus callback of smp_prepare_cpus.  The
simple fix of calling prom_prepare_cpus from one of the earlier SMP
initialization hooks doesn't work well either since IPIs may require
init_IRQ() to have completed, so bit the bullet and split
prom_prepare_cpus into two initialization functions, plat_smp_setup
which is called early from setup_arch and plat_prepare_cpus called where
prom_prepare_cpus used to be called.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-27 17:30:36 +00:00
Ulrich Drepper c04030e16d [PATCH] flags parameter for linkat
I'm currently at the POSIX meeting and one thing covered was the
incompatibility of Linux's link() with the POSIX definition.  The name.
Linux does not follow symlinks, POSIX requires it does.

Even if somebody thinks this is a good default behavior we cannot change this
because it would break the ABI.  But the fact remains that some application
might want this behavior.

We have one chance to help implementing this without breaking the behavior.
 For this we could use the new linkat interface which would need a new
flags parameter.  If the new parameter is AT_SYMLINK_FOLLOW the new
behavior could be invoked.

I do not want to introduce such a patch now.  But we could add the
parameter now, just don't use it.  The patch below would do this.  Can we
get this late patch applied before the release more or less fixes the
syscall API?

Signed-off-by: Ulrich Drepper <drepper@redhat.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-24 14:31:39 -08:00
Ralf Baechle 8db41685c7 [MIPS] Disable CONFIG_ISCSI_TCP; it triggers a gcc 3.4 endless loop.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21 16:58:24 +00:00
Ralf Baechle 1e93e70d03 [MIPS] Yosemite: Fix build damage by dc8f6029cd.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21 16:58:23 +00:00
Atsushi Nemoto 909fa64c8b [MIPS] jiffies_to_compat_timeval fix
The last argument of div_long_long_rem() must be long.
    
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21 16:58:23 +00:00
Rojhalat Ibrahim 1e35aabab8 [MIPS] Add topology_init.
A recent patch introduced cpu topology in sysfs.  When you run a kernel
with SMP and sysfs enabled, you now get an Oops on boot. The following
patch fixes that by adding topology_init to arch/mips/kernel/smp.c. The
code is copied from arch/s390/kernel/smp.c.
    
Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21 16:58:23 +00:00
Martin Michlmayr 76e1daee7d [MIPS] Fix compiler warnings in arch/mips/sibyte/bcm1480/irq.c
Fix the following compiler warnings:
    
  CC      arch/mips/sibyte/bcm1480/irq.o
arch/mips/sibyte/bcm1480/irq.c: In function ‘bcm1480_set_affinity’:
arch/mips/sibyte/bcm1480/irq.c:168: warning: ISO C90 forbids mixed declarations and code
arch/mips/sibyte/bcm1480/irq.c: In function ‘ack_bcm1480_irq’:
arch/mips/sibyte/bcm1480/irq.c:230: warning: ISO C90 forbids mixed declarations and code
    
Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21 16:58:23 +00:00
Ralf Baechle 77607635c3 [MIPS] Sibyte: Config option names shouldn't be prefixed with CONFIG_
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21 16:58:23 +00:00
Ralf Baechle 51939fbb79 [MIPS] Sibyte: #if CONFIG_* doesn't fly.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21 16:58:23 +00:00
Ralf Baechle f3468e0c34 [MIPS] N32: Make sure pointer is good before passing it to sys_waitid().
After all we're calling sys_waitid() with fs set to KERNEL_DS ...

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21 16:58:23 +00:00
Ralf Baechle 82ad93f4a0 [MIPS] N32: Fix N32 rt_sigtimedwait and rt_sigsuspend breakage.
Originally found through an oops in the Gentoo N32 userland build; patch
based on original patch by Daniel Jacobwitz.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21 16:58:22 +00:00
Ralf Baechle 304416da86 [MIPS] Reformat _sys32_rt_sigsuspend with tabs instead of space for consistency.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21 16:58:22 +00:00
Martin Michlmayr dda73d0bb1 [MIPS] Make do_signal32 return void.
do_signal has been changed to return void since the "return value is
ignored everywhere".  Convert do_signal32 accordingly.

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21 16:58:22 +00:00
Martin Michlmayr 68fa383f3e [MIPS] Add support for TIF_RESTORE_SIGMASK for signal32
Following the recent implementation of TIF_RESTORE_SIGMASK in
arch/mips/kernel/signal.c, 64-bit kernels with 32-bit user-land
compatibility oops when starting init.  signal32.c needs to be
converted to use TIF_RESTORE_SIGMASK too.
    
Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21 16:58:22 +00:00
Ralf Baechle 36ccf1c0e3 [MIPS] Make integer overflow exceptions in kernel mode fatal.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-21 16:58:22 +00:00
Atsushi Nemoto 4cbf876790 [MIPS] Fix typo in _sys32_rt_sigreturn and _sysn32_rt_sigreturn.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-14 19:13:26 +00:00
Thomas Koeller 387a154d0d [MIPS] RM9000: Fix buggy I-cache workaround.
Signed-off-by: Thomas Koeller  <thomas.koeller@baslerweb.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-14 19:13:25 +00:00
Ralf Baechle 74a96d943a [MIPS] MT: Propagate config7 into VPE.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-14 19:13:25 +00:00
Ralf Baechle fdc9bb16d3 [MIPS] MT: Fix c0 back-to-back hazard.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-14 19:13:25 +00:00
Ralf Baechle fbb6b3a4ac [MIPS] Get rid of kludgery needed to keep stdargs of old compilers working.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-14 19:13:25 +00:00
Atsushi Nemoto 41700e7399 [MIPS] Add protected_blast_icache_range, blast_icache_range, etc.
Add blast_xxx_range(), protected_blast_xxx_range() etc. for common
use.  They are built by __BUILD_BLAST_CACHE_RANGE().
Use protected_cache_op() macro for various protected_ routines.
Output code should be logically same.
    
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-14 19:13:24 +00:00
Atsushi Nemoto 6307751989 [MIPS] Rewrite get_wchan and its helper functions using kallsyms_lookup.
Implement get_wchan() and frame_info_init() using kallsyms_lookup().
This fixes problem with static sched/lock functions and mfinfo[]
maintenance issue.  If CONFIG_KALLSYMS was disabled, get_wchan() just
returns thread_saved_pc() value.
    
Also unwind stackframe based on "addiu sp,-imm" analysis instead of
frame pointer.  This fixes problem with functions compiled without
-fomit-frame-pointer.
    
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-14 19:13:24 +00:00
Ralf Baechle 1bdfd0d963 [MIPS] Remove commented out function prom_build_cpu_map.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-14 19:13:24 +00:00
Yoichi Yuasa 326a625748 [PATCH] MIPS 32bit machines need fstatat64 support.
As noted by Jan Dittmer <jdi@l4x.org>

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-13 07:47:03 -08:00
Linus Torvalds 17be03f0a1 Merge master.kernel.org:/home/rmk/linux-2.6-serial 2006-02-08 15:21:22 -08:00
Atsushi Nemoto be6e518b62 [MIPS] Sparse: Add __user tags to syscall.c
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

---
2006-02-08 17:52:26 +00:00
Ralf Baechle 72bf891421 [MIPS] Wire up new syscalls.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

---
2006-02-08 17:52:25 +00:00
Ralf Baechle 40ac5d479b [MIPS] Make do_signal return void.
It's return value is ignored everywhere.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

---
2006-02-08 17:52:25 +00:00
Ralf Baechle 7b3e2fc847 [MIPS] Add support for TIF_RESTORE_SIGMASK.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

---
2006-02-08 17:52:24 +00:00
Ralf Baechle b38c73995f [MIPS] Clear ST0_RE on bootup.
The reset state is undefined and some firmware doesn't clear this bit
possibly resulting in crashes on entry into userland.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07 13:30:26 +00:00
Sergei Shtylylov f09678af51 [MIPS] TX49x7: Fix reporting of the CPU name and PCI clock
I've noticed that PCI clock was incorrectly reported as 66 MHz while being
mere 33 MHz on RBTX4937 board -- this was due to the different encoding of
the PCI divisor field in CCFG register between TX4927 and TX4937 chips...
    
Also, RBTX49x7 was printed out as a CPU name (e.g., "CPU is RBTX4937");
and some debug printk() were duplicating each other...
    
Signed-off-by: Konstantin Baydarov <kbaidarov@ru.mvista.com>
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07 13:30:26 +00:00
Ralf Baechle dbee90b7f9 [MIPS] Fix linker script to work for non-4K page size.
Very much to my surprise Fuxin Zhang reports this is all it takes to get
the kernel to work for page sizes larger than 4kB.  This also paves the
way for support for the R6000 and R8000 which don't support 4kB page size.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07 13:30:26 +00:00