Commit Graph

40 Commits

Author SHA1 Message Date
David S. Miller
595a251c07 sparc: Write to prom console using indirect buffer.
sparc64 systems have a restriction in that passing in buffer
addressses above 4GB to prom calls is not reliable.

We end up violating this when we do prom console writes, because we
use an on-stack buffer to translate '\n' into '\r\n'.

So instead, do this translation into an intermediate buffer, which is
in the kernel image and thus below 4GB, then pass that to the PROM
console write calls.

On the 32-bit side we don't have to deal with any of these issues, so
the new prom_console_write_buf() uses the existing prom_nbputchar()
implementation.  However we can now mark those routines static.

Since the 64-bit side completely uses new code we can delete the
putchar bits as they are now completely unused.

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-30 20:15:58 -08:00
David S. Miller
12c7a35ee6 sparc: Delete prom_*getchar().
Completely unused.

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-30 14:53:05 -08:00
David S. Miller
e62cac1fd0 sparc: Pass buffer pointer all the way down to prom_{get,put}char().
This gets us closer to being able to eliminate the use
of dynamic and stack based buffers, so that we can adhere
to the "no buffer addresses above 4GB" rule for PROM calls.

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-30 14:33:29 -08:00
David S. Miller
91921fef7c sparc: Do not export prom_nb{get,put}char().
Never used outside of console_{32,64}.c

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-17 10:22:56 -08:00
David S. Miller
c540ee70e4 sparc64: Delete prom_setcallback().
Unused.

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-16 12:50:19 -08:00
David S. Miller
f7b5f55ac1 sparc64: Unexport prom_service_exists().
Only used by functions in misc_64.c so make it private
to that file.

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-16 12:24:16 -08:00
David S. Miller
b148246912 sparc: Kill prom devops_{32,64}.c
Completely unused.

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-16 12:23:20 -08:00
David S. Miller
17d70d6df0 sparc: Remove prom_pathtoinode()
Unused.

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-16 12:11:15 -08:00
David S. Miller
ce05a94efa sparc64: Delete prom_puts() unused.
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-16 12:08:23 -08:00
Linus Torvalds
51f00a471c Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6
* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6:
  mtd/m25p80: add support to parse the partitions by OF node
  of/irq: of_irq.c needs to include linux/irq.h
  of/mips: Cleanup some include directives/files.
  of/mips: Add device tree support to MIPS
  of/flattree: Eliminate need to provide early_init_dt_scan_chosen_arch
  of/device: Rework to use common platform_device_alloc() for allocating devices
  of/xsysace: Fix OF probing on little-endian systems
  of: use __be32 types for big-endian device tree data
  of/irq: remove references to NO_IRQ in drivers/of/platform.c
  of/promtree: add package-to-path support to pdt
  of/promtree: add of_pdt namespace to pdt code
  of/promtree: no longer call prom_ functions directly; use an ops structure
  of/promtree: make drivers/of/pdt.c no longer sparc-only
  sparc: break out some PROM device-tree building code out into drivers/of
  of/sparc: convert various prom_* functions to use phandle
  sparc: stop exporting openprom.h header
  powerpc, of_serial: Endianness issues setting up the serial ports
  of: MTD: Fix OF probing on little-endian systems
  of: GPIO: Fix OF probing on little-endian systems
2010-10-25 08:19:14 -07:00
Andres Salomon
8d1255627d of/sparc: convert various prom_* functions to use phandle
Rather than passing around ints everywhere, use the
phandle type where appropriate for the various functions
that talk to the PROM.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-10-09 02:33:34 -06:00
David Howells
df9ee29270 Fix IRQ flag handling naming
Fix the IRQ flag handling naming.  In linux/irqflags.h under one configuration,
it maps:

	local_irq_enable() -> raw_local_irq_enable()
	local_irq_disable() -> raw_local_irq_disable()
	local_irq_save() -> raw_local_irq_save()
	...

and under the other configuration, it maps:

	raw_local_irq_enable() -> local_irq_enable()
	raw_local_irq_disable() -> local_irq_disable()
	raw_local_irq_save() -> local_irq_save()
	...

This is quite confusing.  There should be one set of names expected of the
arch, and this should be wrapped to give another set of names that are expected
by users of this facility.

Change this to have the arch provide:

	flags = arch_local_save_flags()
	flags = arch_local_irq_save()
	arch_local_irq_restore(flags)
	arch_local_irq_disable()
	arch_local_irq_enable()
	arch_irqs_disabled_flags(flags)
	arch_irqs_disabled()
	arch_safe_halt()

Then linux/irqflags.h wraps these to provide:

	raw_local_save_flags(flags)
	raw_local_irq_save(flags)
	raw_local_irq_restore(flags)
	raw_local_irq_disable()
	raw_local_irq_enable()
	raw_irqs_disabled_flags(flags)
	raw_irqs_disabled()
	raw_safe_halt()

with type checking on the flags 'arguments', and then wraps those to provide:

	local_save_flags(flags)
	local_irq_save(flags)
	local_irq_restore(flags)
	local_irq_disable()
	local_irq_enable()
	irqs_disabled_flags(flags)
	irqs_disabled()
	safe_halt()

with tracing included if enabled.

The arch functions can now all be inline functions rather than some of them
having to be macros.

Signed-off-by: David Howells <dhowells@redhat.com> [X86, FRV, MN10300]
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> [Tile]
Signed-off-by: Michal Simek <monstr@monstr.eu> [Microblaze]
Tested-by: Catalin Marinas <catalin.marinas@arm.com> [ARM]
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> [AVR]
Acked-by: Tony Luck <tony.luck@intel.com> [IA-64]
Acked-by: Hirokazu Takata <takata@linux-m32r.org> [M32R]
Acked-by: Greg Ungerer <gerg@uclinux.org> [M68K/M68KNOMMU]
Acked-by: Ralf Baechle <ralf@linux-mips.org> [MIPS]
Acked-by: Kyle McMartin <kyle@mcmartin.ca> [PA-RISC]
Acked-by: Paul Mackerras <paulus@samba.org> [PowerPC]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [S390]
Acked-by: Chen Liqin <liqin.chen@sunplusct.com> [Score]
Acked-by: Matt Fleming <matt@console-pimps.org> [SH]
Acked-by: David S. Miller <davem@davemloft.net> [Sparc]
Acked-by: Chris Zankel <chris@zankel.net> [Xtensa]
Reviewed-by: Richard Henderson <rth@twiddle.net> [Alpha]
Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp> [H8300]
Cc: starvik@axis.com [CRIS]
Cc: jesper.nilsson@axis.com [CRIS]
Cc: linux-cris-kernel@axis.com
2010-10-07 14:08:55 +01:00
David S. Miller
25edd6946a sparc64: Get rid of indirect p1275 PROM call buffer.
This is based upon a report by Meelis Roos showing that it's possible
that we'll try to fetch a property that is 32K in size with some
devices.  With the current fixed 3K buffer we use for moving data in
and out of the firmware during PROM calls, that simply won't work.

In fact, it will scramble random kernel data during bootup.

The reasoning behind the temporary buffer is entirely historical.  It
used to be the case that we had problems referencing dynamic kernel
memory (including the stack) early in the boot process before we
explicitly told the firwmare to switch us over to the kernel trap
table.

So what we did was always give the firmware buffers that were locked
into the main kernel image.

But we no longer have problems like that, so get rid of all of this
indirect bounce buffering.

Besides fixing Meelis's bug, this also makes the kernel data about 3K
smaller.

It was also discovered during these conversions that the
implementation of prom_retain() was completely wrong, so that was
fixed here as well.  Currently that interface is not in use.

Reported-by: Meelis Roos <mroos@linux.ee>
Tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-23 23:10:57 -07:00
David S. Miller
8a4fd1e492 sparc64: Make prom entry spinlock NMI safe.
If we do something like try to print to the OF console from an NMI
while we're already in OpenFirmware, we'll deadlock on the spinlock.

Use a raw spinlock and disable NMIs when we take it.

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-03 09:06:03 -08:00
Jan Engelhardt
1349ea08e8 sparc: remove redundant return statements
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-10 11:47:57 -08:00
David S. Miller
bd4352cadf sparc64: Fix bootup with mcount in some configs.
Functions invoked early when booting up a cpu can't use
tracing because mcount requires a valid 'current_thread_info()'
and TLB mappings to be setup.

The code path of sun4v_register_mondo_queues --> register_one_mondo
is one such case.  sun4v_register_mondo_queues already has the
necessary 'notrace' annotation, but register_one_mondo does not.

Normally register_one_mondo is inlined so the bug doesn't trigger,
but with some config/compiler combinations, it won't be so we
must properly mark it notrace.

While we're here, add 'notrace' annoations to prom_printf and
prom_halt so that early error handling won't have the same problem.

Reported-by: Alexander Beregalov <a.beregalov@gmail.com>
Reported-by: Leif Sawyer <lsawyer@gci.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-04 03:39:45 -07:00
Julian Calaby
222bfda032 sparc: Eliminate PROMLIB_INTERNAL as it does nothing
Signed-off-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-08 16:59:01 -08:00
Julian Calaby
bc835978cf sparc: Kill exports of prom internal functions
__prom_getchild() and __prom_getsibling() are not used anywhere, so
don't export them.

Signed-off-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-08 16:58:42 -08:00
Sam Ravnborg
917c3660d6 sparc64: move EXPORT_SYMBOL to the symbols definition
Move all applicable EXPORT_SYMBOL()s to the file where the respective
symbol is defined.

Removed all the includes that are no longer needed in sparc_ksyms_64.c

Comment all remaining EXPORT_SYMBOL()s in sparc_ksyms_64.c

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

Additions by Julian Calaby:
* Moved EXPORT_SYMBOL()s for prom functions to their rightful places.
* Made some minor cleanups to the includes and comments of sparc_ksyms_64.c
* Updated and tidied commit message.
* Rebased patch over sparc-2.6.git HEAD.
* Ensured that all modified files have the correct includes.

Signed-off-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-08 16:58:20 -08:00
Sam Ravnborg
6943f3da3e sparc: move EXPORT_SYMBOL to the symbols definition
Move all applicable EXPORT_SYMBOL()s to the file where the respective
symbol is defined.

Removed all the includes that are no longer needed in sparc_ksyms_32.c

Comment all remaining EXPORT_SYMBOL()s in sparc_ksyms_32.c

Two symbols are shared with sparc64 thus the exports were removed from
the sparc_ksyms_64.c too, along with the include their ommission made
redundant.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

Additions by Julian Calaby:
* Moved EXPORT_SYMBOL()s for prom functions to their rightful places.
* Made some minor cleanups to the includes and comments of sparc_ksyms_32.c
* Made another subtraction from sparc_ksyms_64.c
* Updated and tidied commit message.
* Rebased patch over sparc-2.6.git HEAD.
* Ensured that all modified files have the correct includes.

Signed-off-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-08 16:58:05 -08:00
Robert Reif
efe6c3dd8b sparc: Use sparc64 version of prom/printf.c
Use sparc64 version of prom/printf.c.

The only differences for sparc32 is that prom_printf is no longer
exported for modules which should be OK.

Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-08 01:00:14 -08:00
David S. Miller
ab04323e5b sparc: Const'ify prom_*prop*() on sparc32.
This brings things in line with sparc64.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-05 16:54:44 -08:00
Sam Ravnborg
757498c63e sparc: drop CONFIG_SUN_AUXIO
It is always equals y so no need to test for it

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04 13:26:31 -08:00
Sam Ravnborg
5de18cde3b sparc,sparc64: unify prom/
- all files with identical names copied and renamed to *_64.c
- the remaning files copied as is
- added sparc64 specific files to sparc/prom/Makefile
- teach sparc64 Makefile to look into sparc/prom/
- delete unused Makefile from sparc64/prom/

linking order was not kept for sparc64 with this change.
It was not possible to keep linking order for both sparc and sparc64
and as sparc64 see more testing than sparc it was natural to
break linking order on sparc64. Should it have any effect it
would be detected sooner this way.

printf_32.c and printf_64.c are obvious candidates to be merged
but they are not 100% equal so that was left for later

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04 09:17:17 -08:00
Sam Ravnborg
708d4f0964 sparc: prepare prom/ for unification
- rename files where sparc64 uses identical names to *_32.c
- refactor Makefile (but keep linking order)

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-04 09:17:16 -08:00
Adrian Bunk
5110bd21b8 sparc: remove CONFIG_SUN4
While doing some easy cleanups on the sparc code I noticed that the
CONFIG_SUN4 code seems to be worse than the rest - there were some
"I don't know how it should work, but the current code definitely cannot
work." places.

And while I have seen people running Linux on machines like a
SPARCstation 5 a few years ago I don't recall having seen sun4
machines, even less ones running Linux.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-31 20:59:37 -07:00
David S. Miller
9dc69230a9 sparc: Kill now spurious includes of sbus.h
In order to make this week I also had to add an include
of linux/dma-mapping.h to asm/pci_32.h because drivers/pci/pci.c
really depends upon getting this header somehow.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29 02:15:23 -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
David S. Miller
4a1236ac6e sparc32: Delete prom_stdin and prom_stdout.
They are written, but never used.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-02 05:22:54 -07:00
David S. Miller
9f2b2a5f68 sparc32: More memory probing consolidation.
The PROM library function prom_meminit() builds a table,
prom_phys_avail[], just so that probe_memory() in
arch/sparc/mm/fault.c can copy it into sp_banks[].

Just have prom_meminit() fill in the sp_banks[] array directly, and
remove duplicated sort() function.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-02 05:22:53 -07:00
David S. Miller
ccc34028d4 sparc32: Kill totally unused memory information tables.
The code in arch/sparc/prom/memory.c computes three tables, the list
of total memory, the list of available memory (total minus what
firmware is using), and the list of firmware taken memory.

Only the available memory list is even used.

Therefore, kill those unused tables and make prom_meminfo() return
just the available memory list.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-02 05:22:53 -07:00
David S. Miller
667bc389c7 [SPARC]: Kill 'prom_palette'.
The idea of this thing is we could save/restore the firmware's
palette when breaking in and out of the firmware prompt.

Only one driver implemented this (atyfb) and it's value is
questionable.  If you're just debugging you don't really
care that the characters end up being purple or whatever.

And we can provide better debugging and firmware command
facilities with minimal in-kernel console I/O drivers.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-18 15:28:16 -08:00
David S. Miller
7bcd4dae62 [SPARC32]: Kill unused vars and macros from prom/console.c
This should have been removed during the of_console_device
changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-08-26 18:49:10 -07:00
Al Viro
86ac92ee69 [SPARC32]: missing exports
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-24 13:24:33 -07:00
David S. Miller
c73fcc846c [SPARC]: Fix serial console device detection.
The current scheme works on static interpretation of text names, which
is wrong.

The output-device setting, for example, must be resolved via an alias
or similar to a full path name to the console device.

Paths also contain an optional set of 'options', which starts with a
colon at the end of the path.  The option area is used to specify
which of two serial ports ('a' or 'b') the path refers to when a
device node drives multiple ports.  'a' is assumed if the option
specification is missing.

This was caught by the UltraSPARC-T1 simulator.  The 'output-device'
property was set to 'ttya' and we didn't pick upon the fact that this
is an OBP alias set to '/virtual-devices/console'.  Instead we saw it
as the first serial console device, instead of the hypervisor console.

The infrastructure is now there to take advantage of this to resolve
the console correctly even in multi-head situations in fbcon too.

Thanks to Greg Onufer for the bug report.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-20 16:59:26 -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
David S. Miller
06ffd7956e [SPARC]: Kill prom_getname, unused and not implemented properly.
The m68k port's sun3 asm/oplib.h had a stray reference too, so I
killed that off as well.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-07-21 14:17:55 -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
Al Viro
3c51f196b6 [PATCH] sparc NULL noise removal
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-04 07:33:13 -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