Commit Graph

74 Commits

Author SHA1 Message Date
Ingo Molnar
d1bef4ed5f [PATCH] genirq: rename desc->handler to desc->chip
This patch-queue improves the generic IRQ layer to be truly generic, by adding
various abstractions and features to it, without impacting existing
functionality.

While the queue can be best described as "fix and improve everything in the
generic IRQ layer that we could think of", and thus it consists of many
smaller features and lots of cleanups, the one feature that stands out most is
the new 'irq chip' abstraction.

The irq-chip abstraction is about describing and coding and IRQ controller
driver by mapping its raw hardware capabilities [and quirks, if needed] in a
straightforward way, without having to think about "IRQ flow"
(level/edge/etc.) type of details.

This stands in contrast with the current 'irq-type' model of genirq
architectures, which 'mixes' raw hardware capabilities with 'flow' details.
The patchset supports both types of irq controller designs at once, and
converts i386 and x86_64 to the new irq-chip design.

As a bonus side-effect of the irq-chip approach, chained interrupt controllers
(master/slave PIC constructs, etc.) are now supported by design as well.

The end result of this patchset intends to be simpler architecture-level code
and more consolidation between architectures.

We reused many bits of code and many concepts from Russell King's ARM IRQ
layer, the merging of which was one of the motivations for this patchset.

This patch:

rename desc->handler to desc->chip.

Originally i did not want to do this, because it's a big patch.  But having
both "desc->handler", "desc->handle_irq" and "action->handler" caused a
large degree of confusion and made the code appear alot less clean than it
truly is.

I have also attempted a dual approach as well by introducing a
desc->chip alias - but that just wasnt robust enough and broke
frequently.

So lets get over with this quickly.  The conversion was done automatically
via scripts and converts all the code in the kernel.

This renaming patch is the first one amongst the patches, so that the
remaining patches can stay flexible and can be merged and split up
without having some big monolithic patch act as a merge barrier.

[akpm@osdl.org: build fix]
[akpm@osdl.org: another build fix]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-29 10:26:21 -07:00
Atsushi Nemoto
1723b4a34a [MIPS] Make timer interrupt frequency configurable from kconfig.
Make HZ configurable.  DECSTATION can select 128/256/1024 HZ, JAZZ can
only select 100 HZ, others can select 100/128/250/256/1000/1024 HZ if
not explicitly specified).  Also remove all mach-xxx/param.h files and
update all defconfigs according to current HZ value.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-06-19 17:39:27 +01:00
Ralf Baechle
2925aba422 [MIPS] Cleanup memory managment initialization.
Historically plat_mem_setup did the entire platform initialization.  This
was rather impractical because it meant plat_mem_setup had to get away
without any kind of memory allocator.  To keep old code from breaking
plat_setup was just renamed to plat_setup and a second platform
initialization hook for anything else was introduced.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-06-19 17:39:23 +01:00
Ralf Baechle
e4ac58afdf [MIPS] Rewrite all the assembler interrupt handlers to C.
Saves like 1,600 lines of code, is way easier to debug, compilers
frequently do a better job than the cut and paste type of handlers many
boards had.  And finally having all the stuff done in a single place
also means alot of bug potencial for the MT ASE is gone.

The only surviving handler in assembler is the DECstation one; I hope
Maciej will rewrite it.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-04-19 04:14:21 +02:00
Ralf Baechle
9c1f1257a3 [MIPS] Replace redundant declarations of _end by <asm/sections.h>.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-04-19 04:14:20 +02:00
Ralf Baechle
93373ed4d8 [MIPS] Rewrite spurious_interrupt from assembler to C.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-04-19 04:14:18 +02:00
Matt Mackall
ddcabb4fc7 [PATCH] RTC: Remove RTC UIP synchronization on MIPS-based DEC
Move real_year inside the read loop and move the spinlock up as well

Signed-off-by: Matt Mackall <mpm@selenic.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-28 09:16:01 -08:00
Yoichi Yuasa
d23ee8fe6e [PATCH] mips: fixed collision of rtc function name
Fix the collision of rtc function name.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27 08:44:50 -08:00
Nick Piggin
7835e98b2e [PATCH] remove set_page_count() outside mm/
set_page_count usage outside mm/ is limited to setting the refcount to 1.
Remove set_page_count from outside mm/, and replace those users with
init_page_count() and set_page_refcounted().

This allows more debug checking, and tighter control on how code is allowed
to play around with page->_count.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-22 07:54:02 -08:00
Ralf Baechle
a3dddd560e [MIPS] War on whitespace: cleanup initial spaces followed by tabs.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-21 13:27:47 +00:00
Ralf Baechle
fcdb27ad1d [MIPS] Rename _machine_power_off to pm_power_off so the kernel builds again.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07 13:30:22 +00:00
Atsushi Nemoto
53c2df2f4e Use rtc_lock to protect RTC operations
Many RTC routines were not protected against each other, so there are
potential races, for example, ntp-update against /dev/rtc.  This patch
fixes them using rtc_lock.
    
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-07 18:05:38 +00:00
Maciej W. Rozycki
23bbbaf89c Make static what ought to be static.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:32:12 +01:00
Maciej W. Rozycki
a5fc9c0bbe Use physical addresses at the interface level, letting drivers remap
them as appropriate.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:31:35 +01:00
Maciej W. Rozycki
69c75fb458 Actual handlers for bus errors for Pmax and 3min.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/dec/kn01-berr.c b/arch/mips/dec/kn01-berr.c
new file mode 100644
2005-10-29 19:31:30 +01:00
Maciej W. Rozycki
64dac503e8 System-specific handling of bus errors for DECstation variations
supporting parity errors only for memory (Pmax/3min/Maxine).
Fixes for resources decoded by the KN04/KN05 MB ASIC.  Additional
clean-ups for the ECC handler.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:31:30 +01:00
Maciej W. Rozycki
8a185d14b6 Fix types for firmware arguments. Don't define unneeded messages.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:31:27 +01:00
Maciej W. Rozycki
3bd4c902da Deal with the bloody KSEG vs CKSEG horror...
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:31:23 +01:00
Maciej W. Rozycki
902d21d531 There is NO port I/O space on the DECstation. Minor clean-ups.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:31:23 +01:00
Maciej W. Rozycki
68e4a86c80 This interrupt is *always* handled -- MIPS_BE_DISCARD just means
no further action wanted.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:31:20 +01:00
Ralf Baechle
c83cfc9c94 Get rid of early_init. There's more need to make this form of
initialization actually useful and as is certainly unmergable with
upstream.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:30:18 +01:00
Ralf Baechle
42a3b4f25a [PATCH] mips: nuke trailing whitespace
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:06:07 -07:00
Ralf Baechle
875d43e72b [PATCH] mips: clean up 32/64-bit configuration
Start cleaning 32-bit vs. 64-bit configuration.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:06:06 -07:00
Linus Torvalds
1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00