Commit Graph

49 Commits

Author SHA1 Message Date
Sam Ravnborg
08c9388f58 sparc32: remove remaining users of btfixup
Use sparc_config to hold the last two function pointers.  There was no
point generating dedicated _ops structures only for these.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-14 14:05:08 -07:00
Sam Ravnborg
4ba22b16bb sparc32: move smp ipi to method ops
I ended up renaming set_cpu_int to send_ipi to
be consistent all way around.
send_ipi was moved to the *_smp.c files so
we could call the relevant method direct,
without any _ops indirection.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-14 14:05:07 -07:00
David S. Miller
5d83d66635 sparc32: Move cache and TLB flushes over to method ops.
This eliminated most of the remaining users of btfixup.

There are some complications because of the special cases we
have for sun4d, leon, and some flavors of viking.

It was found that there are no cases where a flush_page_for_dma
method was not hooked up to something, so the "noflush" iommu
methods were removed.

Add some documentation to the viking_sun4d_smp_ops to describe exactly
the hardware bug which causes us to need special TLB flushing on
sun4d.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-13 20:49:31 -07:00
Sam Ravnborg
0f031b3f26 sparc32: drop unused clear_cpu_int
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-13 12:51:57 -07:00
Sam Ravnborg
41eb17ce98 sparc32: drop unused set_irq_udt
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-13 12:51:56 -07:00
Tkhai Kirill
62f082830d sparc32: generic clockevent support
The kernel uses l14 timers as clockevents. l10 timer is used
as clocksource if platform master_l10_counter isn't constantly
zero. The clocksource is continuous, so it's possible to use
high resolution timers. l10 timer is also used as clockevent
on UP configurations.

This realization is for sun4m, sun4d, sun4c, microsparc-IIep
and LEON platforms. The appropriate LEON changes was made by
Konrad Eisele.

In case of sun4m's oneshot mode, profile irq is zeroed in
smp4m_percpu_timer_interrupt(). It is maybe
needless (double, triple etc overflow does nothing).

sun4d is able to have oneshot mode too, but I haven't
any way to test it. So code of its percpu timer handler
is made as much equal to the current code as possible.

The patch is tested on sun4m box in SMP mode by me,
and tested by Konrad on leon in up mode (leon smp
is broken atm - due to other reasons).

Signed-off-by: Tkhai Kirill <tkhai@yandex.ru>
Tested-by: Konrad Eisele <konrad@gaisler.com> [leon up]
[sam: revised patch to provide generic support for leon]
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-15 10:28:50 -07:00
Sam Ravnborg
472bc4f2ad sparc32: rename sparc_irq_config to sparc_config
This struct holds platform specific config and is thus not
limited to irq stuff.
Do not let the name confuse us to think this is irq only.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-15 10:28:49 -07:00
oftedal
9eeb08986f Add support for allocating irqs for bootbus devices
Some devices that can generate interrupts are connected directly to the
CPU through the bootbus on sun4d. This patch allows IRQs to be allocated
for such devices. The information used for allocating interrupts for
sbus devices are present at the corresponding SBI node. For bootbus
devices this information is present in the bootbus node.

Signed-off-by: Kjetil Oftedal <oftedal@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-07 16:06:33 -07:00
oftedal
ea16058457 Do not skip interrupt sources in sun4d interrupt handler and acknowledge interrupts correctly
During the introduction of genirq on sparc32 bugs were introduced in
the interrupt handler for sun4d. The interrupts handler checks the status
of the various sbus interfaces in the system and generates a virtual
interrupt, based upon the location of the interrupt source. This lookup
was broken by restructuring the code in such a way that index and shift
operations were performed prior to comparing this against the values
read from the interrupt controllers.

This could cause the handler to loop eternally as the interrupt source
could be skipped before any check was performed. Additionally
sun4d_encode_irq performs shifting internally, so it should not be performed
twice.

In sun4d_unmask interrupts were not correctly acknowledged, as the
corresponding bit it the interrupt mask was not actually cleared.

Signed-off-by: Kjetil Oftedal <oftedal@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-07 16:06:33 -07:00
oftedal
5fba17084e Restructure sun4d_build_device_irq so that timer interrupts can be allocated
sun4d_build_device_irq was called without a valid platform_device when
the system timer was initialized on sun4d systems. This caused a NULL
pointer crash.

Josip Rodin suggested that the current sun4d_build_device_irq should be
split into two functions. So that the timer initialization could skip
the slot and sbus interface detection code in sun4d_build_device_irq, as
this does not make sence due to the timer interrupts not being generated
from a device located on sbus.

Signed-off-by: Kjetil Oftedal <oftedal@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-07 16:06:32 -07:00
Daniel Hellstrom
55dd23eca6 sparc32, sun4d: Implemented SMP IPIs support for SUN4D machines
The sun4d does not seem to have a distingstion between soft and hard
IRQs. When generating IPIs the generated IRQ looks like a hard IRQ,
this patch adds a "IPI check" in the sun4d irq trap handler at a
predefined IRQ number (SUN4D_IPI_IRQ). Before generating an IPI
a per-cpu memory structure is modified for the "IPI check" to
successfully detect a IPI request to a specific processor, the check
clears the IPI work requested.

All three IPIs (resched, single and cpu-mask) use the same IRQ
number.

The IPI IRQ should preferrably be on a separate IRQ and definitly
not shared with IRQ handlers requesting IRQ with IRQF_SHARED.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-16 13:07:44 -07:00
Daniel Hellstrom
5fcafb7a23 sparc32: always define boot_cpu_id
Define boot_cpu_id in single-processor kernels as well. This is
to support architectures which can boot on other than CPU0.

Sam Ravnborg has written the cleanup parts by extracting
boot_cpu_id from smp_32.c into setup_32.c and cleaned up
sun4d_irq.c.

boot_cpu_id was initialized before BSS was cleared in
sun4c_continue_boot, instead boot_cpu_id is set to 0xff to
avoid BSS. If boot_cpu_id is untouched (0xff) by bootup code
it will be overwritten to 0. boot_cpu_id4 is automatically
calculated in common code.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-21 16:44:44 -07:00
Sam Ravnborg
6baa9b20a6 sparc32: genirq support
The conversion of sparc32 to genirq is based on original work done
by David S. Miller.
Daniel Hellstrom has helped in the conversion and implemented
the shutdowm functionality.
Marcel van Nies <morcles@gmail.com> has tested this on Sparc Station 20

Test status:
sun4c      - not tested
sun4m,pci  - not tested
sun4m,sbus - tested (Sparc Classic, Sparc Station 5, Sparc Station 20)
sun4d      - not tested
leon       - tested on various combinations of leon boards,
             including SMP variants

generic
   Introduce use of GENERIC_HARDIRQS and GENERIC_IRQ_SHOW
   Allocate 64 IRQs - which is enough even for SS2000
   Use a table of irq_bucket to maintain uses IRQs
      irq_bucket is also used to chain several irq's that
      must be called when the same intrrupt is asserted
   Use irq_link to link a interrupt source to the irq
   All plafforms must now supply their own build_device_irq method
   handler_irq rewriten to use generic irq support

floppy
   Read FLOPPY_IRQ from platform device
   Use generic request_irq to register the floppy interrupt
   Rewrote sparc_floppy_irq to use the generic irq support

pcic:
   Introduce irq_chip
   Store mask in chip_data for use in mask/unmask functions
   Add build_device_irq for pcic
   Use pcic_build_device_irq in pci_time_init
   allocate virtual irqs in pcic_fill_irq

sun4c:
   Introduce irq_chip
   Store mask in chip_data for use in mask/unmask functions
   Add build_device_irq for sun4c
   Use sun4c_build_device_irq in sun4c_init_timers

sun4m:
   Introduce irq_chip
   Introduce dedicated mask/unmask methods
   Introduce sun4m_handler_data that allow easy access to necessary
     data in the mask/unmask functions
   Add a helper method to enable profile_timer (used from smp)
   Added sun4m_build_device_irq
   Use sun4m_build_device_irq in sun4m_init_timers

   TODO:
      There is no replacement for smp_rotate that always scheduled
      next CPU as interrupt target upon an interrupt

sun4d:
   Introduce irq_chip
   Introduce dedicated mask/unmask methods
   Introduce sun4d_handler_data that allow easy access to
   necessary data in mask/unmask fuctions
   Rewrote sun4d_handler_irq to use generic irq support

   TODO:
      The original implmentation of enable/disable had:

          if (irq < NR_IRQS)
               return;

      The new implmentation does not distingush between SBUS and cpu
      interrupts.
      I am no sure what is right here. I assume we need to do
      something for the cpu interrupts.

      I have not succeeded booting my sun4d box (with or without this patch)
      and my understanding of this platfrom is limited.
      So I would be a bit suprised if this works.

leon:
   Introduce irq_chip
   Store mask in chip_data for use in mask/unmask functions
   Add build_device_irq for leon
   Use leon_build_device_irq in leon_init_timers

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Daniel Hellstrom <daniel@gaisler.com>
Tested-by: Daniel Hellstrom <daniel@gaisler.com>
Tested-by: Marcel van Nies <morcles@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-19 22:11:40 -07:00
Sam Ravnborg
db1cdd146a sparc32,sun4d: rename sbus_tid to board_to_cpu in irq support
The new name reflects the actual usage much better.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-19 22:11:39 -07:00
Sam Ravnborg
1d05995b08 sparc32: introduce build_device_irq
build_device_irq() is used to encapsulate the plaform
specific details when we build an irq.
For now the default is a simple 1:1 but sun4d differs.
This patch refactors functionality - but does not change
the existing functionality.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-16 18:19:14 -07:00
Sam Ravnborg
bbdc2661ea sparc32: introduce sparc_irq_config
sparc_irq_config is used to hold the platform specific irq setup.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-16 18:19:13 -07:00
Sam Ravnborg
70044df411 sparc32, sun4d: add comment in empty statement in sun4d_request_irq()
This looked like a bug to me.
Add a comment so next reader is hopefully less confused.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-16 18:19:11 -07:00
Sam Ravnborg
a625a12a76 sparc32,sun4d: drop unused code in sun4d_distribute_irqs()
The preprocessor symbol was not defined and the code
was therefore not in use.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-16 18:19:10 -07:00
Sam Ravnborg
e54f8548ff sparc32,sun4d: irq, smp files cleanup
- drop filename in file header
- drop unused includes
- add description of sun4d interrupts (from davem)
- add KERN_* to printk
- fix spaces => tabs
- add spaces after reserved words
- fix indent of a whole code block in smp4d_boot_one_cpu()
  Note: two printk() was updated from debug to KERN_INFO in this code block
- drop all externs, they are now in header files

This is partly based on a patch from: David Miller <davem@davemloft.net>

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-16 18:19:10 -07:00
Sam Ravnborg
d4d1ec48c4 sparc: in handler_irq() rename irq parameter to pil
The generic irq support uses "irq" to identify the
virtual irq number. To avoid confusion rename the
argument to handler_irq() to pil to match the
name of the parameter in the PCR register.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-16 18:19:01 -07:00
Julia Lawall
0d0659c78d arch/sparc/kernel: Eliminate what looks like a NULL pointer dereference
At the point of the test, action cannot be NULL, as it has been dereferenced
in the code just above.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r exists@
expression E,E1;
identifier f;
statement S1,S2,S3;
@@

if ((E == NULL && ...) || ...)
{
  ... when != if (...) S1 else S2
      when != E = E1
* E->f
  ... when any
}
else S3
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-04 16:17:37 -07:00
Rusty Russell
1a8a51004a cpumask: remove references to struct irqaction's mask field.
Impact: cleanup

It's unused, since about 1995.  So remove all initialization of it in
preparation for actually removing the field.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
2009-03-30 22:05:14 +10:30
Sam Ravnborg
81265fd93b sparc: fix sparse warnings in irq_32.c
Fix following sparse warnings:
symbol 'static_irqaction' was not declared. Should it be static?
symbol 'static_irq_count' was not declared. Should it be static?
symbol 'irq_action_lock' was not declared. Should it be static?
symbol 'unexpected_irq' was not declared. Should it be static?
symbol 'handler_irq' was not declared. Should it be static?
returning void-valued expression
returning void-valued expression
returning void-valued expression
symbol 'init_IRQ' was not declared. Should it be static?

Warnings were fixed by addding proper declarations
and fixing return path of a few functions.

There remains several warnings all related to the floppy driver.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-08 01:08:24 -08:00
Nicolas Palix
c2e27c359a sparc: Add missing of_node_put
of_node_put is needed before discarding a value received from
of_find_node_by_name, eg in error handling code or when the device
node is no longer used.

The semantic match that catches the bug is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@r exists@
local idexpression struct device_node *n;
position p1, p2;
struct device_node *n1;
statement S;
identifier f;
expression E;
expression *ptr != NULL;
@@

n@p1 = of_find_node_by_name(...)
...
if (!n) S
... when != of_node_put(n)
    when != n1 = f(n,...)
    when != E = n
    when any
    when strict
(
  return \(0\|<+...n...+>\|ptr\);
|
return@p2 ...;
|
  of_node_put(n);
|
  n1 = f(n,...)
|
  E = n
)

@script:python@
p1 << r.p1;
p2 << r.p2;
@@

print "* file: %s of_find_node_by_name %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>

Signed-off-by: Nicolas Palix <npalix@diku.dk>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04 09:17:22 -08:00
David S. Miller
c7e606a8f8 sparc32: Delete master_l10_limit.
It is only set, never used.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19 21:18:03 -07:00
David S. Miller
76954261ba sparc32: Kill clear_profile_irq btfixup entry.
Unused.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19 21:17:59 -07:00
David S. Miller
f8376e933c sparc32: Remove some SMP ifdefs in sun4d_irq.c
Always do the sbus_tid[] handling.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19 21:17:56 -07:00
David S. Miller
f5f1085720 sparc32: Use PROM infrastructure for probing and mapping sun4d timers.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19 21:17:56 -07:00
David S. Miller
7b1af32f52 sparc32: Move sun4d show_leds() out of asm/obio.h
Put it, as well as cpu_leds[] array, into sun4d_irq.c

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-08 15:40:45 -07:00
David S. Miller
454eeb2dd7 sparc: Convert remaining sbus_ioremap() and sbus_iounmap() users.
Use of_ioremap() and of_iounmap() instead.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29 02:15:13 -07:00
David S. Miller
33c4655c00 sparc: Kill SBUS layer IRQ hooks.
IRQs are obtained by drivers from the of_device struct.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29 02:15:10 -07:00
David S. Miller
71d3721189 sparc32: Convert sun4d IRQ code to use generic device tree probing.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29 02:15:09 -07:00
Adrian Bunk
c61c65cdcd sparc/kernel/: possible cleanups
This patch contains the following possible cleanups:
- make the following needlessly global code static:
  - apc.c: apc_swift_idle()
  - ebus.c: ebus_blacklist_irq()
  - ebus.c: fill_ebus_child()
  - ebus.c: fill_ebus_device()
  - entry.S: syscall_is_too_hard
  - etra: tsetup_sun4c_stackchk
  - head.S: cputyp
  - head.S: prom_vector_p
  - idprom.c: Sun_Machines[]
  - ioport.c: _sparc_find_resource()
  - ioport.c: create_proc_read_entry()
  - irq.c: struct sparc_irq[]
  - rtrap.S: sun4c_rett_stackchk
  - setup.c: prom_sync_me()
  - setup.c: boot_flags
  - sun4c_irq.c: sun4c_sbint_to_irq()
  - sun4d_irq.c: sbus_tid[]
  - sun4d_irq.c: struct sbus_actions
  - sun4d_irq.c: sun4d_sbint_to_irq()
  - sun4m_irq.c: sun4m_sbint_to_irq()
  - sun4m_irq.c: sun4m_get_irqmask()
  - sun4m_irq.c: sun4m_timers
  - sun4m_smp.c: smp4m_cross_call()
  - sun4m_smp.c: smp4m_blackbox_id()
  - sun4m_smp.c: smp4m_blackbox_current()
  - time.c: sp_clock_typ
  - time.c: sbus_time_init()
  - traps.c: instruction_dump()
  - wof.S: spwin_sun4c_stackchk
  - wuf.S: sun4c_fwin_stackchk
- #if 0 the following unused code:
  - process.c: sparc_backtrace_lock
  - process.c: __show_backtrace()
  - process.c: show_backtrace()
  - process.c: smp_show_backtrace_all_cpus()
- remove the following unused code:
  - entry.S: __handle_exception
  - smp.c: smp_num_cpus
  - smp.c: smp_activated
  - smp.c: __cpu_number_map[]
  - smp.c: __cpu_logical_map[]
  - smp.c: bitops_spinlock
  - traps.c: trap_curbuf
  - traps.c: trapbuf[]
  - traps.c: linux_smp_still_initting
  - traps.c: thiscpus_tbr
  - traps.c: thiscpus_mid

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-17 21:37:46 -07:00
Adrian Bunk
88278ca27a sparc: remove CVS keywords
This patch removes the CVS keywords that weren't updated for a long time
from comments.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-20 00:33:44 -07:00
Al Viro
0f516813ce [SPARC32]: Take enable_irq/disable_irq out of line.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-21 19:19:38 -07:00
Al Viro
32231a66b4 [SPARC32]: clean include/asm-sparc/irq.h
Move stuff used only by arch/sparc/kernel/* into arch/sparc/kernel/irq.h
and into individual files in there (e.g. macros internal to sun4m_irq.c,
etc.)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-21 19:18:57 -07:00
Simon Arlott
d1a78c32ed [SPARC]: Spelling fixes.
Spelling fixes in arch/sparc/.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-11 21:39:20 -07:00
Randy Dunlap
e63340ae6b header cleaning: don't include smp_lock.h when not used
Remove includes of <linux/smp_lock.h> where it is not used/needed.
Suggested by Al Viro.

Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,
sparc64, and arm (all 59 defconfigs).

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:07 -07:00
Robert P. J. Day
5cbded585d [PATCH] getting rid of all casts of k[cmz]alloc() calls
Run this:

	#!/bin/sh
	for f in $(grep -Erl "\([^\)]*\) *k[cmz]alloc" *) ; do
	  echo "De-casting $f..."
	  perl -pi -e "s/ ?= ?\([^\)]*\) *(k[cmz]alloc) *\(/ = \1\(/" $f
	done

And then go through and reinstate those cases where code is casting pointers
to non-pointers.

And then drop a few hunks which conflicted with outstanding work.

Cc: Russell King <rmk@arm.linux.org.uk>, Ian Molton <spyro@f2s.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Greg KH <greg@kroah.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Paul Fulghum <paulkf@microgate.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Karsten Keil <kkeil@suse.de>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Ian Kent <raven@themaw.net>
Cc: Steven French <sfrench@us.ibm.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Neil Brown <neilb@cse.unsw.edu.au>
Cc: Jaroslav Kysela <perex@suse.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-13 09:05:58 -08:00
David S. Miller
d4accd60d2 [SPARC]: Check kzalloc() return value in SUN4D irq/iommu init.
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-10 02:40:10 -08:00
Yan Burman
c80892d150 [SPARC]: Replace kmalloc+memset with kzalloc
Replace kmalloc+memset with kzalloc

Signed-off-by: Yan Burman <burman.yan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-10 02:40:00 -08:00
David Howells
40220c1a19 IRQ: Use the new typedef for interrupt handler function pointers
Use the new typedef for interrupt handler function pointers rather than
actually spelling out the full thing each time.  This was scripted with the
following small shell script:

#!/bin/sh
egrep -nHrl -e 'irqreturn_t[ 	]*[(][*]' $* |
while read i
do
    echo $i
    perl -pi -e 's/irqreturn_t\s*[(]\s*[*]\s*([_a-zA-Z0-9]*)\s*[)]\s*[(]\s*int\s*,\s*void\s*[*]\s*[)]/irq_handler_t \1/g' $i || exit $?
done

Signed-Off-By: David Howells <dhowells@redhat.com>
2006-10-09 12:19:47 +01:00
Al Viro
0d84438d98 [PATCH] sparc32 pt_regs fixes
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-08 12:32:35 -07:00
Thomas Gleixner
6741320247 [PATCH] irq-flags: SPARC: Use the new IRQF_ constants
Use the new IRQF_ constants and remove the SA_INTERRUPT define

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-02 13:58:48 -07:00
Jörn Engel
6ab3d5624e Remove obsolete #include <linux/config.h>
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-30 19:25:36 +02:00
David S. Miller
c6387a48cf [SPARC]: Kill __irq_itoa().
This ugly hack was long overdue to die.

It was a way to print out Sparc interrupts in a more freindly format,
since IRQ numbers were arbitrary opaque 32-bit integers which vectored
into PIL levels.  These 32-bit integers were not necessarily in the
0-->NR_IRQS range, but the PILs they vectored to were.

The idea now is that we will increase NR_IRQS a little bit and use a
virtual<-->real IRQ number mapping scheme similar to PowerPC.

That makes this IRQ printing hack irrelevant, and furthermore only a
handful of drivers actually used __irq_itoa() making it even less
useful.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-20 01:21:29 -07:00
Bob Breuer
a54123e277 [SPARC]: Try to start getting SMP back into shape.
Todo items:
 - IRQ_INPROGRESS flag - use sparc64 irq buckets, or generic irq_desc?
 - sun4d
 - re-indent large chunks of sun4m_smp.c
 - some places assume sequential cpu numbering (i.e. 0,1 instead of 0,2)

Last I checked (with 2.6.14), random programs segfault with dual
HyperSPARC.  And with SuperSPARC II's, it seems stable but will
eventually die from a write lock error (wrong lock owner or something).

I haven't tried the HyperSPARC + highmem combination recently, so that
may still be a problem.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-23 22:36:19 -08:00
Andrew Morton
394e3902c5 [PATCH] more for_each_cpu() conversions
When we stop allocating percpu memory for not-possible CPUs we must not touch
the percpu data for not-possible CPUs at all.  The correct way of doing this
is to test cpu_possible() or to use for_each_cpu().

This patch is a kernel-wide sweep of all instances of NR_CPUS.  I found very
few instances of this bug, if any.  But the patch converts lots of open-coded
test to use the preferred helper macros.

Cc: Mikael Starvik <starvik@axis.com>
Cc: David Howells <dhowells@redhat.com>
Acked-by: Kyle McMartin <kyle@parisc-linux.org>
Cc: Anton Blanchard <anton@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: William Lee Irwin III <wli@holomorphy.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Christian Zankel <chris@zankel.net>
Cc: Philippe Elie <phil.el@wanadoo.fr>
Cc: Nathan Scott <nathans@sgi.com>
Cc: Jens Axboe <axboe@suse.de>
Cc: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-23 07:38:17 -08:00
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