Commit Graph

944 Commits

Author SHA1 Message Date
Ralf Baechle
0004a9dfea [MIPS] Cleanup memory barriers for weakly ordered systems.
Also the R4000 / R4600 LL/SC instructions imply a sync so no explicit sync
needed.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-12-04 22:43:14 +00:00
Ralf Baechle
08f57f7ffe [MIPS] Alchemy: Automatically enable CONFIG_RESOURCES_64BIT for PCI configs.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-12-04 22:43:13 +00:00
Atsushi Nemoto
0bcdda0f3a [MIPS] Unify csum_partial.S
The 32-bit version and 64-bit version are almost equal.  Unify them.  This
makes further improvements (for example, copying with parallel, supporting
PREFETCH, etc.) easier.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-12-04 22:43:13 +00:00
Maciej W. Rozycki
03dbd2e0b1 [MIPS] SWARM: Fix a typo in #error directives
This is a fix for a typo repeated several times in #error directives for
invalid SiByte configurations.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-12-04 22:43:13 +00:00
Atsushi Nemoto
05e4396651 [MIPS] Use SYSVIPC_COMPAT to fix various problems on N32
N32 SysV IPC system calls should use 32-bit compatible code.
arch/mips/kernel/linux32.c have similar compatible code for O32, but
ipc/compat.c seems more complete.  We can use it for both N32 and O32.

This patch should fix these problems (and other possible problems):

http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=1149188824.6986.6.camel%40diimka-laptop
http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=44C6B829.8050508%40caviumnetworks.com

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-12-04 22:43:12 +00:00
Al Viro
8e3d8433d8 [NET]: MIPS checksum annotations and cleanups.
* sanitize prototypes, annotate
* kill shift-by-16 in checksum calculations
* htons->shift in l-e checksum calculations

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02 21:23:09 -08:00
Linus Torvalds
c3e59d1e89 Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (31 commits)
  [MIPS] Remove duplicate ISA DMA code for 0 DMA channel case.
  [MIPS] Remove unused definition of cpu_to_lelongp()
  [MIPS] Remove userspace proofing from <asm/bitops.h>.
  [MIPS] Remove old junk left from old atomic_lock.
  [MIPS] Use conditional traps for BUG_ON on MIPS II and better.
  [MIPS] mips HPT cleanup: make clocksource_mips public
  [MIPS] do_IRQ cleanup
  [MIPS] Avoid dupliate D-cache flush on R400C / R4400 SC and MC variants.
  [MIPS] Remove redundant r4k_blast_icache() calls
  [MIPS] Work around bogus gcc warnings.
  [MIPS] Fix double inclusions
  [MIPS] use generic_handle_irq, handle_level_irq, handle_percpu_irq
  [MIPS] IRQ cleanups
  [MIPS] mips hpt cleanup: get rid of mips_hpt_init
  [MIPS] PB1200: Remove duplicate definitions
  [MIPS] Fix alignment hole in struct cache_desc; shrink struct.
  [MIPS] Oprofile: kernel support for the R10000.
  [MIPS] Remove unused R10000 performance counter definitions.
  [MIPS] Add support for kexec
  [MIPS] Don't print presence of WAIT instruction on bootup.
  ...
2006-12-01 16:44:02 -08:00
Matt LaPlante
3cb2fccc5f Fix misc Kconfig typos
Fix various Kconfig typos.

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-11-30 05:22:59 +01:00
Ralf Baechle
aa414dff4f [MIPS] Remove duplicate ISA DMA code for 0 DMA channel case.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:51 +00:00
Ralf Baechle
63dc68a8cf [MIPS] Use conditional traps for BUG_ON on MIPS II and better.
This shaves of around 4kB and a few cycles for the average kernel that
has CONFIG_BUG enabled.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:50 +00:00
Atsushi Nemoto
005985609f [MIPS] mips HPT cleanup: make clocksource_mips public
Make clocksource_mips public and get rid of mips_hpt_read,
mips_hpt_mask.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:49 +00:00
Atsushi Nemoto
187933f236 [MIPS] do_IRQ cleanup
Now we have both function and macro version of do_IRQ() and the former
is used only by DEC and non-preemptive kernel.  This patch makes
everyone use the macro version and removes the function version.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:49 +00:00
Ralf Baechle
617667ba72 [MIPS] Avoid dupliate D-cache flush on R400C / R4400 SC and MC variants.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:48 +00:00
Atsushi Nemoto
0550d9d13e [MIPS] Remove redundant r4k_blast_icache() calls
r4k_flush_cache_all() and r4k_flush_cache_mm() case: these are noop if
the CPU did not have dc_aliases.  It would mean we do not need to care
about icache here.

r4k_flush_cache_range case: if r4k_flush_cache_mm() did not need to
care about icache, it would be same for this function.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:48 +00:00
Ralf Baechle
e567988244 [MIPS] Work around bogus gcc warnings.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:47 +00:00
Nicolas Kaiser
dd6bfd627c [MIPS] Fix double inclusions
Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:47 +00:00
Atsushi Nemoto
1417836e81 [MIPS] use generic_handle_irq, handle_level_irq, handle_percpu_irq
Further incorporation of generic irq framework.  Replacing __do_IRQ()
by proper flow handler would make the irq handling path a bit simpler
and faster.

* use generic_handle_irq() instead of __do_IRQ().
* use handle_level_irq for obvious level-type irq chips.
* use handle_percpu_irq for irqs marked as IRQ_PER_CPU.
* setup .eoi routine for irq chips possibly used with handle_percpu_irq.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:46 +00:00
Atsushi Nemoto
1603b5aca4 [MIPS] IRQ cleanups
This is a big irq cleanup patch.

* Use set_irq_chip() to register irq_chip.
* Initialize .mask, .unmask, .mask_ack field.  Functions for these
  method are already exist in most case.
* Do not initialize .startup, .shutdown, .enable, .disable fields if
  default routines provided by irq_chip_set_defaults() were suitable.
* Remove redundant irq_desc initializations.
* Remove unnecessary local_irq_save/local_irq_restore, spin_lock.

With this cleanup, it would be easy to switch to slightly lightwait
irq flow handlers (handle_level_irq(), etc.) instead of __do_IRQ().

Though whole this patch is quite large, changes in each irq_chip are
not quite simple.  Please review and test on your platform.  Thanks.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:46 +00:00
Atsushi Nemoto
c87b6ebaea [MIPS] mips hpt cleanup: get rid of mips_hpt_init
Currently nobody outside time.c require mips_hpt_init().  Remove it
and call c0_hpt_timer_init() directly if R4k counter was used for
timer interrupt.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:46 +00:00
Yoichi Yuasa
0d02f0734f [MIPS] PB1200: Remove duplicate definitions
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:45 +00:00
Ralf Baechle
714cfe7865 [MIPS] Oprofile: kernel support for the R10000.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:45 +00:00
Nicolas Schichan
583bb86fbb [MIPS] Add support for kexec
A tiny userland application loading the kernel and invoking kexec_load for 
mips is available here:

http://chac.le-poulpe.net/~nico/kexec/kexec-2006-10-18.tar.gz

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:44 +00:00
Ralf Baechle
c237923009 [MIPS] Don't print presence of WAIT instruction on bootup.
Not useful and quite a big of noise on bootup of large systems.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:44 +00:00
Atsushi Nemoto
5b10496b6e [MIPS] Fast path for rdhwr emulation for TLS
Add special short path for emulationg RDHWR which is used to support TLS.
Add an extra prologue for cpu_has_vtag_icache case.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:44 +00:00
Atsushi Nemoto
656be92f9a [MIPS] Load modules to CKSEG0 if CONFIG_BUILD_ELF64=n
This is a patch to load 64-bit modules to CKSEG0 so that can be
compiled with -msym32 option.  This makes each module ~10% smaller.

* introduce MODULE_START and MODULE_END
* custom module_alloc()
* PGD for modules
* change XTLB refill handler synthesizer
* enable -msym32 for modules again
  (revert ca78b1a5c6a6e70e052d3ea253828e49b5d07c8a)

New XTLB refill handler looks like this:

80000080 dmfc0   k0,C0_BADVADDR
80000084 bltz    k0,800000e4			# goto l_module_alloc
80000088 lui     k1,0x8046			# %high(pgd_current)
8000008c ld      k1,24600(k1)			# %low(pgd_current)
80000090 dsrl    k0,k0,0x1b			# l_vmalloc_done:
80000094 andi    k0,k0,0x1ff8
80000098 daddu   k1,k1,k0
8000009c dmfc0   k0,C0_BADVADDR
800000a0 ld      k1,0(k1)
800000a4 dsrl    k0,k0,0x12
800000a8 andi    k0,k0,0xff8
800000ac daddu   k1,k1,k0
800000b0 dmfc0   k0,C0_XCONTEXT
800000b4 ld      k1,0(k1)
800000b8 andi    k0,k0,0xff0
800000bc daddu   k1,k1,k0
800000c0 ld      k0,0(k1)
800000c4 ld      k1,8(k1)
800000c8 dsrl    k0,k0,0x6
800000cc mtc0    k0,C0_ENTRYLO0
800000d0 dsrl    k1,k1,0x6
800000d4 mtc0    k1,C0_ENTRYL01
800000d8 nop
800000dc tlbwr
800000e0 eret
800000e4 dsll    k1,k0,0x2			# l_module_alloc:
800000e8 bgez    k1,80000008			# goto l_vmalloc
800000ec lui     k1,0xc000
800000f0 dsubu   k0,k0,k1
800000f4 lui     k1,0x8046			# %high(module_pg_dir)
800000f8 beq     zero,zero,80000000
800000fc nop
80000000 beq     zero,zero,80000090		# goto l_vmalloc_done
80000004 daddiu  k1,k1,0x4000
80000008 dsll32  k1,k1,0x0			# l_vmalloc:
8000000c dsubu   k0,k0,k1
80000010 beq     zero,zero,80000090		# goto l_vmalloc_done
80000014 lui     k1,0x8046			# %high(swapper_pg_dir)

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:44 +00:00
Yoichi Yuasa
56ae583330 [MIPS] Rewrite GALILEO_INL/GALILEO_OUTL to GT_READ/GT_WRITE
This patch has rewritten GALILEO_INL/GALILEO_OUTL using GT_READ/GT_WRITE.
This patch tested on Cobalt Qube2.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:43 +00:00
Franck Bui-Huu
acd86b8622 [MIPS] Make free_init_pages() arguments to be physical addresses
It allows caller of this function to not care about CKSEG0/XKPHYS
address mixes. It's now automatically done by free_init_pages().

We can now safely remove hack needed by 64 bit kernels with
CONFIG_BUILD_ELF64=n in free_initmem().

Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:42 +00:00
Franck Bui-Huu
a7837b76b6 [MIPS] setup.c: clean up initrd related code
Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:42 +00:00
Franck Bui-Huu
f5bffe3a9b [MIPS] setup.c: use __pa_symbol() where needed
It should fix the broken code in resource_init() too.

Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:41 +00:00
Franck Bui-Huu
d4df6d4e7a [MIPS] setup.c: get ride of CPHYSADDR()
and use new __pa() implementation instead introduced by the previous
patch. Indeed this macro can be used now even by the 64 bit kernels
with CONFIG_BUILD_ELF64=n config.

Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:41 +00:00
Franck Bui-Huu
99e3b942c6 [MIPS] page.h: remove __pa() usages.
__pa() was used by virt_to_page() and virt_addr_valid(). These
latter are used when kernel is initialised so __pa() is not
appropriate, we use virt_to_phys() instead.

Futhermore __pa() is going to take care of CKSEG0/XKPHYS
address mix for 64 bit kernels. This makes __pa() more complex
than virt_to_phys() and this extra work is not needed by
virt_to_page() and virt_addr_valid().

Eventually it consolidates virt_to_phys() prototype by making
its argument 'const'. this avoids some warnings that was due
to some virt_to_page() usages which pass const pointer.

Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-30 01:14:40 +00:00
Ralf Baechle
f5d6c63a67 [MIPS] Do topology_init even on uniprocessor kernels.
Otherwise CPU 0 doesn't show up in sysfs which breaks some software.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-29 16:21:34 +00:00
Ralf Baechle
177b2927e2 [MIPS] Fix Bonito bootup message.
Even when enabling Bonito IOBC coherence the kernel would actually claim
it was disabling it.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-28 19:13:34 +00:00
Thiemo Seufer
eb48287508 [MIPS] Hack for SB1 cache issues
Removing flush_icache_page a while ago broke SB1 which was using an empty
flush_data_cache_page function.  This glues things well enough so a more
efficient but also more intrusive solution can be found later.

Signed-Off-By: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-22 23:34:01 +00:00
Ralf Baechle
73f4388aed [MIPS] Fix EV64120 and Ocelot builds by providing a plat_timer_setup().
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-06 20:55:39 +00:00
Ralf Baechle
4e5852f31a [MIPS] EV64120: Fix PCI interrupt allocation.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-06 20:55:38 +00:00
Ralf Baechle
4a4cf77923 [MIPS] Make irq number allocator generally available for fixing EV64120.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-06 20:55:38 +00:00
Ralf Baechle
325d08d1a4 [MIPS] EV64120: Fix timer initialization for HZ != 100.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-06 20:55:38 +00:00
Ralf Baechle
ff28cbd280 [MIPS] Ocelot 3: Fix MAC address detection after platform_device conversion.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-06 20:55:38 +00:00
Ralf Baechle
907c51b2d1 [MIPS] Ocelot C: Fix MAC address detection after platform_device conversion.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-06 20:55:37 +00:00
Ralf Baechle
d6b861c640 [MIPS] SB1: On bootup only flush cache on local CPU.
This fixes a warning on bootup warning in smp_call_function.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-06 20:55:37 +00:00
Ralf Baechle
d19f7befe9 [MIPS] Ocelot 3: Fix large number of warnings.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-06 20:55:36 +00:00
Ralf Baechle
ad0b365573 [MIPS] Ocelot C: Fix mapping of ioport address range.
o Fix warnings
 o 768MB worth of I/O ports were insane
 o 64-bit kernels don't need special handling because ioremap does the magic

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-06 20:55:36 +00:00
Ralf Baechle
2002d2bde1 [MIPS] Ocelot C: Fix warning about missmatching format string.
CC      arch/mips/momentum/ocelot_c/setup.o
arch/mips/momentum/ocelot_c/setup.c: In function 'momenco_time_init':
arch/mips/momentum/ocelot_c/setup.c:223: warning: format '%d' expects type 'int', but argument 2 has type 'long unsigned int'

Change data type to match format string; a 32-bit type better suits our
needs.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-06 20:55:36 +00:00
Ralf Baechle
9c422e2ad6 [MIPS] Ocelot C: fix eth registration after conversion to platform_device
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-06 20:55:35 +00:00
Ralf Baechle
cca72333e7 [MIPS] Ocelot C: Fix large number of warnings.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-06 20:55:35 +00:00
Atsushi Nemoto
236d333c3c [MIPS] Do not use -msym32 option for modules.
On 64-bit kernel, modules are loaded into XKSEG for now.  While XKSEG
address is not a sign-extended 32-bit address, we can not use -msym32
option.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-02 17:23:34 +00:00
Ralf Baechle
8b922a8517 [MIPS] Ocelot G: Fix : "CURRENTLY_UNUSED" is not defined warning.
CC      arch/mips/momentum/ocelot_g/gt-irq.o
arch/mips/momentum/ocelot_g/gt-irq.c:30:5: warning: "CURRENTLY_UNUSED" is not defined
arch/mips/momentum/ocelot_g/gt-irq.c:199:5: warning: "CURRENTLY_UNUSED" is not defined

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-02 17:23:33 +00:00
Ralf Baechle
9ba126cfbf [MIPS] Fix warning about init_initrd() call if !CONFIG_BLK_DEV_INITRD.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-02 17:23:33 +00:00
Ralf Baechle
1a5c5de1b6 [MIPS] IP27: Allow SMP ;-) Another changeset messed up by patch.
When lmo commit 4ef893e0515e8bf336dfbd200884f244869fbb43 was merged to
kernel.org as e73ea273ef patch happily
applied the IP27 segment to IP22.  f63f36c18b11e166d0f362ac04dbcd7e6ea23f9e
did fix the effects partially - and with a wrong log message.  Now fixed
for real (tm).

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-11-02 17:23:33 +00:00