Commit graph

162 commits

Author SHA1 Message Date
Ingo Molnar
1a781a777b Merge branch 'generic-ipi' into generic-ipi-for-linus
Conflicts:

	arch/powerpc/Kconfig
	arch/s390/kernel/time.c
	arch/x86/kernel/apic_32.c
	arch/x86/kernel/cpu/perfctr-watchdog.c
	arch/x86/kernel/i8259_64.c
	arch/x86/kernel/ldt.c
	arch/x86/kernel/nmi_64.c
	arch/x86/kernel/smpboot.c
	arch/x86/xen/smp.c
	include/asm-x86/hw_irq_32.h
	include/asm-x86/hw_irq_64.h
	include/asm-x86/mach-default/irq_vectors.h
	include/asm-x86/mach-voyager/irq_vectors.h
	include/asm-x86/smp.h
	kernel/Makefile

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-15 21:55:59 +02:00
Linus Torvalds
dc221eae08 Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: (56 commits)
  i2c: Add detection capability to new-style drivers
  i2c: Call client_unregister for new-style devices too
  i2c: Clean up old chip drivers
  i2c-ibm_iic: Register child nodes
  i2c: New-style EEPROM driver using device IDs
  i2c: Export the i2c_bus_type symbol
  i2c-au1550: Fix PM support
  i2c-dev: Delete empty detach_client callback
  i2c: Drop stray references to lm_sensors
  i2c: Check for ACPI resource conflicts
  i2c-ocores: basic PM support
  i2c-sibyte: SWARM I2C board initialization
  i2c-i801: Fix handling of error conditions
  i2c-i801: Rename local variable temp to status
  i2c-i801: Properly report bus arbitration loss
  i2c-i801: Remove verbose debugging messages
  i2c-algo-pcf: Drop unused struct members
  i2c-algo-pcf: Multi-master lost-arbitration improvement
  i2c: Deprecate the legacy gpio drivers
  i2c-pxa: Initialize early
  ...
2008-07-15 11:16:05 -07:00
Jonathan Corbet
2fceef397f Merge commit 'v2.6.26' into bkl-removal 2008-07-14 15:29:34 -06:00
Maciej W. Rozycki
392a0408fd i2c-sibyte: SWARM I2C board initialization
The standard rtc-m41t80.c driver cannot be used with the SWARM as it is,
because the board does not provide setup information for the I2C core.  
As a result the bus and the address to probe for the M41T80 chip is not
known.

 Here is a set of changes that fix the problem:

1. swarm-i2c.c -- SWARM I2C board setup, currently for the M41T80 chip on 
   the bus #1 only (there is a MAX6654 temperature sensor on the bus #0 
   which may be added in the future if we have a driver for that chip).

2. The i2c-sibyte.c BCM1250A SMBus controller driver now registers its 
   buses as numbered so that board setup is correctly applied.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14 22:38:33 +02:00
Jens Axboe
8691e5a8f6 smp_call_function: get rid of the unused nonatomic/retry argument
It's never used and the comments refer to nonatomic and retry
interchangably. So get rid of it.

Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-06-26 11:24:35 +02:00
Maciej W. Rozycki
63a4881a7d [MIPS] Sibyte: Build RTC support as an object
Build the SWARM platform library is as an object rather than an archive
so that files which only contain symbols used by initcalls and do not
provide any symbols that would pull them from an archive still work.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-06-16 15:14:47 +01:00
Jonathan Corbet
7558da942e mips: cdev lock_kernel() pushdown
Push the cdev lock_kernel() call into MIPS-specific drivers.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-05-18 15:43:40 -06:00
Ralf Baechle
af0c4f649d [MIPS] BCM1480: Remove stray function call resulting in infinite recursion
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-02-19 17:01:31 +00:00
Ralf Baechle
81149be113 [MIPS] Remove CONFIG_SIBYTE_PT{1120,1125,SWARM}
According to Broadcom the PT systems are production test systems which
never reached customers so no need to keep the fragmentary support we
currently have.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-01-29 10:14:58 +00:00
Ralf Baechle
87353d8ac3 [MIPS] SMP: Call platform methods via ops structure.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-01-29 10:14:57 +00:00
Ralf Baechle
33b75e5c51 [MIPS] Sibyte: Replace use of removed IO_SPACE_BASE with IOADDR.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-11-15 23:21:49 +00:00
Ralf Baechle
a8401fa57f [MIPS] BCM1480: Remove duplicate acknowledge of timer interrupt.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-11-15 23:21:49 +00:00
Ralf Baechle
217dd11e9d [MIPS] Sibyte: Split and move clock code.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-11-02 16:13:47 +00:00
Ralf Baechle
f3f9ad0edc [MIPS] Sibyte: Fixes for oneshot timer mode.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-11-02 16:13:47 +00:00
Ralf Baechle
faf2782bf3 [MIPS] Sibyte: Remove blank line.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-11-02 16:13:47 +00:00
Thiemo Seufer
211a29a87c [MIPS] Swarm: Fix build failure
Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-11-02 16:13:47 +00:00
Ralf Baechle
46abf4b39a [MIPS] SB1250: Use the right irqaction for the timer interrupt.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-11-02 16:13:46 +00:00
Ralf Baechle
d1598b6adb [MIPS] SB1250: Remove stray assignment of cpumask.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-11-02 16:13:46 +00:00
Ralf Baechle
2e5dcd2b4c [MIPS] Sibyte: Fix names of the clockevent devices.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-11-02 16:13:46 +00:00
Ralf Baechle
9e32a510af [MIPS] Sibyte: Build fixes / dead code removal.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-11-02 16:13:46 +00:00
Ralf Baechle
1238d5d868 [MIPS] time: Fix cut'n'paste bug in Sibyte clockevent driver.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-29 19:35:36 +00:00
Ralf Baechle
11ca25aa31 [MIPS] Sibyte: Delete {sb1250,bcm1480}_steal_irq().
They break the timer interrupt initialization and only seem to be a kludge
for initialization happening in the wrong order.  Further testing done by
Thiemo confirms the suspicion that the other invocations also seem to have
useless.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-29 19:35:35 +00:00
Ralf Baechle
d04533650f [MIPS] time: SMP-proofing of Sibyte clockevent/clocksource code.
The BCM148 has 4 cores but there are also just 4 generic timers available
so use the ZBbus cycle counter instead of it.  In addition the ZBbus
counter also offers a much higher resolution and 64-bit counting so I'm
considering a later complete conversion to it once I figure out if all
members of the Sibyte SOC family support it - the docs seem to agree but
the headers files seem to disagree ...

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-22 22:09:00 +01:00
Ralf Baechle
d527eef5b7 [MIPS] Sibyte: Finish conversion to modern time APIs.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-19 18:15:58 +01:00
Atsushi Nemoto
9ee5389c58 [MIPS] Sibyte: Fix typos in sibyte clockevent drivers
Fix some typo introduced on clockevent conversion.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-17 18:28:49 +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
e9f874b6f7 [MIPS] Clockevent driver for BCM1480
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:10 +01:00
Ralf Baechle
9b9ea2202f [MIPS] Clockevent driver for BCM1250
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:10 +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
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
Aurelien Jarno
df78b5c8fa [MIPS] Move CFE code into arch/mips/fw/cfe
Move the platform independent part of the CFE code to arch/mips/fw/cfe from
arch/mips/sibyte/cfe.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:05 +01:00
Ralf Baechle
7c4b4773b9 [MIPS] Sibyte: cleanup static inline forward declarations.
In fact there are no foward declarations at all needed when moving things
into the right order.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:05 +01:00
Atsushi Nemoto
b47bd961e2 [MIPS] Kill redundant EXTRA_AFLAGS
Kill redundant EXTRA_AFLAGS added after the commit
d2af363cfb.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:03 +01:00
Ralf Baechle
da51f9e10c [MIPS] BCM1480: include <linux/init.h>.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-09-21 17:54:12 +01:00
Ralf Baechle
339c3a6a12 [MIPS] BCM1480: Export zbbus_mhz.
Symbol is required by the ZBus profiler.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-09-21 17:54:12 +01:00
Ralf Baechle
2e4dafd5d1 [MIPS] Sibyte: Remove broken dependency on EXPERIMENTAL from SIBYTE_SB1xxx_SOC.
Otherwise Kconfig will produce a nonsenical .config for a kernel that is
neither 32-bit nor 64-bit.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-09-10 21:25:28 +01:00
Ralf Baechle
fbd0ed37c8 [MIPS] BCM1480: Fix computation of interrupt mask address register.
CC      arch/mips/sibyte/bcm1480/irq.o
arch/mips/sibyte/bcm1480/irq.c: In function 'bcm1480_mask_irq':
arch/mips/sibyte/bcm1480/irq.c:112: warning: cast to pointer from integer of different size
arch/mips/sibyte/bcm1480/irq.c:114: warning: cast to pointer from integer of different size
arch/mips/sibyte/bcm1480/irq.c: In function 'bcm1480_unmask_irq':
arch/mips/sibyte/bcm1480/irq.c:130: warning: cast to pointer from integer of different size
arch/mips/sibyte/bcm1480/irq.c:132: warning: cast to pointer from integer of different size

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-09-10 21:25:27 +01:00
Ralf Baechle
428ab280a0 [MIPS] SMP: Scatter __cpuinit over the code as needed.
MIPS doesn't do CPU hotplugging yet but since many of the functions don't
even have an __init let's fix this right.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-08-27 02:16:54 +01:00
Ralf Baechle
477f949e0a [MIPS] Sibyte: CONFIG_SIBYTE_SB1250_DUART -> CONFIG_SERIAL_SB1250_DUART
This is needed since the Sibyte serial driver was exchanged.

Issue report by Imre Kaloz <kaloz@openwrt.org>.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-08-27 02:16:51 +01:00
Ralf Baechle
dde96ca8b3 [MIPS] Use -Werror on subdirectories which build cleanly.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-31 21:35:33 +01:00
Ralf Baechle
3118513172 [MIPS] BCM1480: Include <linux/module.h>.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-31 21:35:29 +01:00
Maciej W. Rozycki
b45d527974 sb1250-duart.c: SB1250 DUART serial support
This is a driver for the SB1250 DUART, a dual serial port implementation
included in the Broadcom family of SOCs descending from the SiByte SB1250
MIPS64 chip multiprocessor.  It is a new implementation replacing the
old-fashioned driver currently present in the linux-mips.org tree.  It
supports all the usual features one would expect from a(n asynchronous)
serial driver, including modem line control (as far as hardware supports it
-- there is edge detection logic missing from the DCD and RI lines and the
driver does not implement polling of these lines at the moment), the serial
console, BREAK transmission and reception, including the magic SysRq.  The
receive FIFO threshold is not maintained though.

The driver was tested with a SWARM board which uses a BCM1250 SOC (which is
dual MIPS64 CMP) and has both ports of the single DUART implemented wired
externally.  Both were tested.  Testing included using the ports as
terminal lines at 1200bps (which is the ports minimum), 115200bps and a
couple of random speeds inbetween.  The modem lines were verified to
operate correctly.  No testing was performed with a use as a network
interface, like with SLIP or PPP.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:03 -07:00
Yoichi Yuasa
1f2c6d6b0c [MIPS] Remove unused time.c for swarm
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-12 17:41:21 +01:00
Robert P. J. Day
b3f6df9f21 [MIPS] Transform old-style macros to newer "__noreturn"
Convert old/obsolete NORET_TYPE and ATTRIB_NORET macros to use the
newer standard of "__noreturn" as defined in compiler-gcc.h.

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-07-10 17:32:56 +01:00
Mark Mason
d619f38fda [MIPS] Add bcm1480 ZBus trace support, fix wait related bugs
Make ZBus tracing generic - moving it to a common direcotry under
arch/mips/sibyte, add bcm1480 support and fix some wait related
bugs (thanks to Ralf for assistance on that).

Signed-off-by: Mark Mason <mason@broadcom.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-04-27 16:20:25 +01:00
Mark Mason
9a9943575a [MIPS] Add missing silicon revisions for BCM112x
Recent versions of the BCM112X processors aren't recognized by Linux
(preventing Linux from booting on those processors).  This patch adds
support for those that are missing.

Signed-off-by: Mark Mason <mason@broadcom.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-04-20 14:58:37 +01:00
Mark Mason
6c9fde4bff [MIPS] BCM1480: Fix setting of irq affinity.
Signed-off-by: Mark Mason <mason@broadcom.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-29 23:46:36 +01:00
Ralf Baechle
8fb303c7f1 [MIPS] SB1250: Fix bugs/warnings by creative use of volatile.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-24 17:01:50 +00:00
Thiemo Seufer
119537c092 [MIPS] Misc fixes for plat_irq_dispatch functions
o adds missing ST0_IM masks, which caused the logging of valid interrupts
   as spurious
 o stops pnx8550 to log every interrupt as spurious
 o adds cause register masks for ip22/ip32, which caused handling of masked
   interrupts
 o removes some superfluous parentheses in the SNI interrupt code

Signed-Off-By: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-19 20:22:43 +00:00
Ralf Baechle
bb9b813bb6 [MIPS] Sibyte: Fix ZBbus profiler
o Fix build error.
 o Handle error returns.
 o Deal with signals received while sleeping.
 o Don't allow to be selected when we're not building the directory with
   the driver anyway.
 o Coding style cleanups.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-09 20:27:31 +00:00
Ralf Baechle
ca6f5494f5 [MIPS] Sibyte: Do not allow enabling LDT support if PCI is disabled.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-09 20:27:30 +00:00
Ralf Baechle
36a885306f [MIPS] Fix and cleanup the mess that a dozen prom_printf variants are.
early_printk is a so much saner thing.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-04 19:02:37 +00:00
Atsushi Nemoto
d2af363cfb [MIPS] Kill redundant EXTRA_AFLAGS
Many Makefiles in arch/mips have EXTRA_AFLAGS := $(CFLAGS) line.  This
is redundant while AFLAGS contains $(cflags-y) and any options only
listed in CFLAGS (not in cflags-y) should be unnecessary for asm
sources.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-02-26 23:06:05 +00:00
Arjan van de Ven
5dfe4c964a [PATCH] mark struct file_operations const 2
Many struct file_operations in the kernel can be "const".  Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data.  In addition it'll catch accidental writes at compile time to
these shared resources.

[akpm@osdl.org: sparc64 fix]
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12 09:48:44 -08:00
Atsushi Nemoto
70d21cdeef [MIPS] use name instead of typename for each irq_chip
The "typename" field was obsoleted by the "name" field.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-02-06 16:53:14 +00:00
Atsushi Nemoto
c44e8d5e47 [MIPS] prom_free_prom_memory cleanup
Current prom_free_prom_memory() implementations are almost same as
free_init_pages(), or no-op.  Make free_init_pages() extern (again)
and make prom_free_prom_memory() use it.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-02-06 16:53:09 +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
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
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
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
16b7b2ac01 [MIPS] Fixup migration to GENERIC_TIME
Since we already moved to GENERIC_TIME, we should implement alternatives
of old do_gettimeoffset routines to get sub-jiffies resolution from
gettimeofday().  This patch includes:

 * MIPS clocksource support (based on works by Manish Lachwani).
 * remove unused gettimeoffset routines and related codes.
 * remove unised 64bit do_div64_32().
 * simplify mips_hpt_init. (no argument needed, __init tag)
 * simplify c0_hpt_timer_init. (no need to write to c0_count)
 * remove some hpt_init routines.
 * mips_hpt_mask variable to specify bitmask of hpt value.
 * convert jmr3927_do_gettimeoffset to jmr3927_hpt_read.
 * convert ip27_do_gettimeoffset to ip27_hpt_read.
 * convert bcm1480_do_gettimeoffset to bcm1480_hpt_read.
 * simplify sb1250 hpt functions. (no need to subtract and shift)
    
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-31 20:13:23 +00:00
Ralf Baechle
36d98e79b7 [MIPS] A few more pt_regs fixups.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-19 17:55:13 +01:00
Mark Mason
472f291df5 [MIPS] Fix compilation warnings in arch/mips/sibyte/bcm1480/smp.c
Signed-off-by: Mark Mason <mason@broadcom.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-11 19:30:59 +01:00
Ralf Baechle
27f768192f [MIPS] Cleanup unnecessary <asm/ptrace.h> inclusions.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-09 00:15:28 +01:00
Ralf Baechle
937a801576 [MIPS] Complete fixes after removal of pt_regs argument to int handlers.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-08 02:38:28 +01:00
Ralf Baechle
34c2dd01fd [MIPS] BCM1480: Mask pending interrupts against c0_status.im.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-03 17:59:17 +01:00
Maciej W. Rozycki
d599def5cd [MIPS] SB1250: Interrupt handler fixes
Mask cp0.status against cp0.cause.  Additionally, spurious interrupts are
not recorded.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-03 17:59:17 +01:00
Ralf Baechle
dc41fb4396 [MIPS] Fix 32-bit kernel by replacing 64-bit-only code.
dclz() expects its 64-bit argument being passed as a single register
but on 32-bit kernels it'll actually be in a register pair.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-09-27 13:37:35 +01:00
Ralf Baechle
54d0a216f4 [MIPS] Replace board_timer_setup function pointer by plat_timer_setup.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

---
2006-07-13 21:26:17 +01:00
Thiemo Seufer
5af1c7a4d4 [MIPS] BCM1480: Fix fatal typo in the rewritten interrupt handler.
Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-07-13 21:26:05 +01:00
Thiemo Seufer
6e61e85b09 [MIPS] Sibyte: Improve interrupt latency again for sb1250/bcm1480
this patch restores the behaviour of the old (assembly-written)
interrupt handler, the handler is left as soon as a single interrupt
cause is handled.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-07-13 21:26:05 +01:00
Ralf Baechle
94dee171df [MIPS] Eleminate interrupt migration helper use.
> #define hw_interrupt_type       irq_chip
> typedef struct irq_chip         hw_irq_controller;
> #define no_irq_type             no_irq_chip
> typedef struct irq_desc         irq_desc_t;

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-07-13 21:25:58 +01:00
Jon Smirl
894673ee61 [PATCH] tty: Remove include of screen_info.h from tty.h
screen_info.h doesn't have anything to do with the tty layer and shouldn't be
included by tty.h.  This patches removes the include and modifies all users to
directly include screen_info.h.  struct screen_info is mainly used to
communicate with the console drivers in drivers/video/console.  Note that this
patch touches every arch and I have no way of testing it.  If there is a
mistake the worst thing that will happen is a compile error.

[akpm@osdl.org: fix arm build]
[akpm@osdl.org: fix alpha build]
Signed-off-by: Jon Smirl <jonsmir@gmail.com>
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-10 13:24:16 -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
Linus Torvalds
8d231c11fd Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (33 commits)
  [MIPS] Add missing backslashes to macro definitions.
  [MIPS] Death list of board support to be removed after 2.6.18.
  [MIPS] Remove BSD and Sys V compat data types.
  [MIPS] ioc3.h: Uses u8, so include <linux/types.h>.
  [MIPS] 74K: Assume it will also have an AR bit in config7
  [MIPS] Treat CPUs with AR bit as physically indexed.
  [MIPS] Oprofile: Support VSMP on 34K.
  [MIPS] MIPS32/MIPS64 S-cache fix and cleanup
  [MIPS] excite: PCI makefile needs to use += if it wants a chance to work.
  [MIPS] excite: plat_setup -> plat_mem_setup.
  [MIPS] au1xxx: export dbdma functions
  [MIPS] au1xxx: dbdma, no sleeping under spin_lock
  [MIPS] au1xxx: fix PSC_SMBTXRX_RSR.
  [MIPS] Early printk for IP27.
  [MIPS] Fix handling of 0 length I & D caches.
  [MIPS] Typo fixes.
  [MIPS] MIPS32/MIPS64 secondary cache management
  [MIPS] Fix FIXADDR_TOP for TX39/TX49.
  [MIPS] Remove first timer interrupt setup in wrppmc_timer_setup()
  [MIPS] Fix configuration of R2 CPU features and multithreading.
  ...
2006-06-29 13:44:45 -07:00
Ralf Baechle
e73ea273ef [MIPS] Fix build error: don't offer SMP on systems that don't have SMP.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-06-29 21:10:51 +01:00
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
Thiemo Seufer
4fb60a4b80 [MIPS] Random fixes for sb1250
Random improvements for sb1250: Silence compiler warnings, a bugfix for
the profiling code, and a comment typo.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-06-19 17:39:24 +01:00
Thiemo Seufer
b75d4c1d68 [MIPS] Fix bcm1480 compile
Fix compilation for bcm1480, a hpt is only available on sb1250/bcm112x.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-06-19 17:39:24 +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
[MIPS] James E Wilson
e1701fb2e2 [PATCH] Fix BCM1480 doubled process accounting times.
Running a UP kernel on a bcm1480 board, I get nonsensical timing
results, like this:
release@unknown:~/tmp$ time ./a.out
real    0m22.906s
user    0m45.792s
sys     0m0.010s
According to my watch, this program took 23 seconds to run, so the real
time clock is OK.  It is process accounting that is broken.

I tracked this down to a problem with the function
bcm1480_timer_interrupt in the file sibyte/bcm1480/time.c.  This
function calls ll_timer_interrupt for cpu0, and ll_local_timer_interrupt
for all cpus.  However, both of these functions do process accounting.
Thus processes running on cpu0 end up with doubled times.  This is very
obvious in a UP kernel where all processes run on cpu0.

The correct way to do this is to only call ll_local_timer interrupt if
this is not cpu0.  This can be seen in the mips-board/generic/time.c
file, and also in the sibyte/sb1250/time.c file, both of which handle
this correctly.  I fixed the bcm1480/time.c file by copying over the
correct code from the sb1250/time.c file.

With this fix, I now get sensible results.
release@unknown:~/tmp$ time ./a.out
real    0m22.903s
user    0m22.894s
sys     0m0.006s

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-06-19 17:39:16 +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
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
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
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
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
b6f7880b6c [MIPS] Reformat to 80 columns.
Patch courtesy of Emily Postnews ;-)
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07 13:30:23 +00:00
Ralf Baechle
5ac71fd1cf [MIPS] Sibyte: Make all setup functions __init.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07 13:30:23 +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
Al Viro
dc8f6029cd [PATCH] mips: task_thread_info()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-12 09:08:59 -08:00
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
Andrew Isaacson
a4b5bd9abc SB1 cache exception handling.
Expand SB1 cache error handling by adding SB1_CEX_ALWAYS_FATAL and
SB1_CEX_STALL, allowing configurable behavior on cache errors.
    
Signed-Off-By: Andy Isaacson <adi@broadcom.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:32:48 +01:00
Andrew Isaacson
f137e463b5 Add support for BCM1480 family of chips.
- Kconfig and Makefile changes
 - arch/mips/sibyte/bcm1480/
 - changes to sibyte common code to support 1480
    
Signed-Off-By: Andy Isaacson <adi@broadcom.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:32:47 +01:00
Ralf Baechle
6aaf7786ed No need to explicitly call __read_64bit_c0_split; __read_64bit_c0_register
will do that itself iff needed.  Fix format string.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:32:33 +01:00