Commit Graph

219 Commits

Author SHA1 Message Date
Harvey Harrison 6510d41954 kernel: Move arches to use common unaligned access
Unaligned access is ok for the following arches:
cris, m68k, mn10300, powerpc, s390, x86

Arches that use the memmove implementation for native endian, and
the byteshifting for the opposite endianness.
h8300, m32r, xtensa

Packed struct for native endian, byteshifting for other endian:
alpha, blackfin, ia64, parisc, sparc, sparc64, mips, sh

m86knommu is generic_be for Coldfire, otherwise unaligned access is ok.

frv, arm chooses endianness based on compiler settings, uses the byteshifting
versions.  Remove the unaligned trap handler from frv as it is now unused.

v850 is le, uses the byteshifting versions for both be and le.

Remove the now unused asm-generic implementation.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29 08:06:27 -07:00
Mike Frysinger 0c11700dbf [Blackfin] arch: add include/boot .gitignore files
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-25 08:29:11 +08:00
Michael Hennerich e6c91b64dd [Blackfin] arch: Functional power management support: Add support for cpu frequency scaling
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-25 04:58:29 +08:00
Michael Hennerich 8e39df215c [Blackfin] arch: Equalize include files: Add PLL_DIV Masks
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-25 04:41:49 +08:00
Graf Yang 5be36d22b2 [Blackfin] arch: add Blackfin on-chip SIR IrDA driver support
- add platform device resources in board files
 - add new bfin_sir.h to each machines

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-25 03:09:15 +08:00
Sonic Zhang 4d55563070 [Blackfin] arch: Update anomaly list.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-25 03:28:10 +08:00
Robert P. J. Day 18628e4375 [Blackfin] arch: Clean up the definition and correct the commentary for current_thread_info().
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Acked-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24 09:02:00 +08:00
Mike Frysinger 2d19123388 [Blackfin] arch: define our own BUG() so we can dump the blackfin hardware trace buffer
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24 08:58:44 +08:00
Michael Hennerich a81501af19 [Blackfin] arch: Prevent potential Core Hang situation
If the new value written to the PLL_CTL or VR_CTL register is the
same as the previous value, the PLL wake-up will occur immediately
(PLL is already locked), but the core and system clock will be
bypassed for the PLL_LOCKCNT duration. For this interval, code will
execute at the CLKIN rate instead of at the expected CCLK rate.
Software should guard against this condition by comparing the
current value to the new value before writing the new value.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24 07:32:41 +08:00
Bernd Schmidt 7795566495 [Blackfin] arch: Give the DMA base registers a more descriptive name
The DMA base registers are available in a global named "base_addr" for
every Blackfin variant. Give this a more descriptive name, and remove
duplicate tables from some drivers.

Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24 05:31:18 +08:00
Mike Frysinger 764cb81cdc [Blackfin] arch: actually implement get_cycles function
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24 05:07:29 +08:00
Mike Frysinger 8b6eb473c5 [Blackfin] arch: remove duplicated prototypes for internal cplb structures from the global blackfin header
remove duplicated prototypes for internal cplb structures from
the global blackfin header as nothing else should be accessing these

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24 05:09:06 +08:00
Mike Frysinger 681793711a [Blackfin] arch: declare list of peripherals as const since we dont modify the incoming array
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24 05:04:24 +08:00
Mike Frysinger 5d1617b247 [Blackfin] arch: merge ip0x-specific board changes
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24 05:03:26 +08:00
Graf Yang 6ed8394230 [Blackfin] arch: Resolve the clash issue of UART defines between blackfin headers and include/linux/serial_reg.
Signed-off-by: Graf Yang <graf.yang@analog.com>
Cc: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24 04:43:14 +08:00
Bernd Schmidt d5adb029ef [Blackfin] arch: This allows XIP to work with FD-PIC.
Previously, init failed to do anything meaningful;
it turns out that the reason is that FD-PIC has a readonly data
section which can be located in the XIP filesystem, and various address checks
in the kernel reject such addresses for syscall arguments.  Hence, init's
  execve ("/bin/sh", ...)
failed with error code EFAULT.

There's room for improvement here: in case people want to have filesystems
on flash rather than in main memory, _access_ok should be modified to
allow this.

This bug fix is also dedicated to Michael Hennerich.

Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-24 03:06:15 +08:00
Harvey Harrison b85d858b40 [Blackfin] arch: __FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23 09:39:01 +08:00
Meihui Fan 6b13483ba2 [Blackfin] arch: remove unused/incorrect definition
Signed-off-by: Meihui Fan <mhfan@hhcn.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23 09:07:25 +08:00
Meihui Fan 6eceb0d4da [Blackfin] arch: add support for the rest of the gptimers on the BF54x
Signed-off-by: Meihui Fan <mhfan@hhcn.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23 08:53:15 +08:00
Meihui Fan a8a46a269e [Blackfin] arch: fix obvious bfin_write typos
Signed-off-by: Meihui Fan <mhfan@hhcn.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23 08:50:53 +08:00
Sonic Zhang 37167e6411 [Blackfin] arch: Fix bug - Properly calculate DDR clock.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-25 03:06:10 +08:00
Mike Frysinger 25bb23bfd0 [Blackfin] arch: fix some obvious typos -- some of which prevent SDH building for the BF542
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23 08:27:06 +08:00
Mike Frysinger 0e184c6b4f [Blackfin] arch: relocate MAX_SWITCH_{D,I}_CPLBS from the header to the file where it actually gets used.
relocate MAX_SWITCH_{D,I}_CPLBS from the header to the file
where it actually gets used.  this way when we change
CONFIG_MEM_SIZE in our kconfig, we only rebuild one or two files
rather than a whole bunch that implicitly include cplb.h.

this will also remove the ability to clear the swapcount on
the fly, but i really dont think that functionality is important.

ultimate goal is for CONFIG_MEM_SIZE to go away and calculate
this value on the fly based on what u-boot programmed for us.

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23 08:23:51 +08:00
Mike Frysinger 53eabf046b [Blackfin] arch: replace implied numbers with real values
replace implied numbers with real values so that strace is able to
calculate things automatically ... the numbers are frozen in our ABI,
so having them based off other __NR_xxx values really doesnt matter
-- no functional changes

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23 08:09:45 +08:00
Bryan Wu 9fcdc78c5e [Blackfin] arch: Add dma_map_page and dma_unmap_page stub for MMC SPI compiling
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23 07:41:52 +08:00
Bernd Schmidt 2a0c4fdb66 [Blackfin] arch: fix bug - when using trace buffer with CONFIG_MPU enabled.
There were a couple of problems with the way the trace buffer state
is saved/restored in assembly.  The DEBUG_HWTRACE_SAVE/RESTORE macros
save a value to the stack, which is not immediately obvious; the CPLB
exception code needed changes to load the correct value of the stack
pointer.  The other problem is that the SAVE/RESTORE macros weren't
pushing and popping the value downwards on the stack, but rather moving
it _upwards_, which is of course completely broken.

We also need to make sure there's a matching DEBUG_HWTRACE_RESTORE in
the error case of the CPLB handler.

Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-04-23 07:17:34 +08:00
Bryan Wu b594272c5e [Blackfin] arch: remove TWI I2C register accessing helper macros, because we moved to use i2c new-style interface
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-27 07:25:21 +08:00
Mike Frysinger 0ddeeca25c [Blackfin] arch: add missing __user marking to ss_sp member of signalstack and a few userspace system functions
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-07 02:37:41 +08:00
Matthew Wilcox 5a6483feb0 include: Remove unnecessary inclusions of asm/semaphore.h
None of these files use any of the functionality promised by
asm/semaphore.h.  It's possible that they (or some user of them) rely
on it dragging in some unrelated header file, but I can't build all
these files, so we'll have to fix any build failures as they come up.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
2008-04-18 22:16:54 -04:00
Linus Torvalds 188da98800 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (58 commits)
  ide: remove ide_init_default_irq() macro
  ide: move default IDE ports setup to ide_generic host driver
  ide: remove obsoleted "idex=noprobe" kernel parameter (take 2)
  ide: remove needless hwif->irq check from ide_hwif_configure()
  ide: init hwif->{io_ports,irq} explicitly in legacy VLB host drivers
  ide: limit legacy VLB host drivers to alpha, x86 and mips
  cmd640: init hwif->{io_ports,irq} explicitly
  cmd640: cleanup setup_device_ptrs()
  ide: add ide-4drives host driver (take 3)
  ide: remove ppc ifdef from init_ide_data()
  ide: remove ide_default_io_ctl() macro
  ide: remove CONFIG_IDE_ARCH_OBSOLETE_INIT
  ide: add CONFIG_IDE_ARCH_OBSOLETE_DEFAULTS (take 2)
  ppc/pmac: remove no longer needed IDE quirk
  ppc: don't include <linux/ide.h>
  ppc: remove ppc_ide_md
  ppc/pplus: remove ppc_ide_md.ide_init_hwif hook
  ppc/sandpoint: remove ppc_ide_md hooks
  ppc/lopec: remove ppc_ide_md hooks
  ppc/mpc8xx: remove ppc_ide_md hooks
  ...
2008-04-18 08:39:24 -07:00
Bartlomiej Zolnierkiewicz 9dfcd15a6d ide: remove ide_default_io_ctl() macro
It is always == '((base) + 0x206)' if CONFIG_IDE_ARCH_OBSOLETE_DEFAULTS=y
and it is not needed otherwise (arm, blackfin, parisc, ppc64, sh, sparc[64]).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-18 00:46:34 +02:00
Matthew Wilcox 64ac24e738 Generic semaphore implementation
Semaphores are no longer performance-critical, so a generic C
implementation is better for maintainability, debuggability and
extensibility.  Thanks to Peter Zijlstra for fixing the lockdep
warning.  Thanks to Harvey Harrison for pointing out that the
unlikely() was unnecessary.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 10:42:34 -04:00
Christian Borntraeger dd135ebbd2 kvm: provide kvm.h for all architecture: fixes headers_install
Currently include/linux/kvm.h is not considered by make headers_install,
because Kbuild cannot handle " unifdef-$(CONFIG_FOO) += foo.h.  This problem
was introduced by

commit fb56dbb31c
Author: Avi Kivity <avi@qumranet.com>
Date:   Sun Dec 2 10:50:06 2007 +0200

    KVM: Export include/linux/kvm.h only if $ARCH actually supports KVM

    Currently, make headers_check barfs due to <asm/kvm.h>, which <linux/kvm.h>
    includes, not existing.  Rather than add a zillion <asm/kvm.h>s, export kvm.
    only if the arch actually supports it.

    Signed-off-by: Avi Kivity <avi@qumranet.com>

which makes this an 2.6.25 regression.

One way of solving the issue is to enhance Kbuild, but Avi and David conviced
me, that changing headers_install is not the way to go.  This patch changes
the definition for linux/kvm.h to unifdef-y.

If  unifdef-y is used for linux/kvm.h "make headers_check" will fail on all
architectures without asm/kvm.h.  Therefore, this patch also provides
asm/kvm.h on all architectures.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Avi Kivity <avi@qumranet.com>
Cc: Sam Ravnborg <sam@ravnborg.org
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-02 15:28:18 -07:00
Mike Frysinger 9821b1f4a1 [Blackfin] arch: current_l1_stack_save is a pointer, so use NULL rather than 0
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-05 19:02:23 -07:00
Bryan Wu 2f775dbaa5 [Blackfin] arch: to kill syscalls missing warning by adding new timerfd syscalls
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-06 16:04:58 -07:00
Sonic Zhang db288381e2 [Blackfin] serial driver: Add flow control support to bf54x
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-02-02 17:05:02 +08:00
Sonic Zhang 4cb4f22b19 [Blackfin] serial driver: Fix bug Poll RTS/CTS status in DMA mode as well
https://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3858

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-02-02 14:29:25 +08:00
Mike Frysinger 8851c71eb9 [Blackfin] serial driver: rework break flood anomaly handling to be more robust/realistic about what we can actually work around
Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2007-12-24 19:48:04 +08:00
Mike Frysinger 0bcfd70ea1 [Blackfin] serial driver: fix bug - cache the bits of the LSR on systems where the LSR is read-to-clear
Cache the bits of the LSR on systems where the LSR is read-to-clear
so that we can safely read the LSR in random places.  this fixes
older parts where break/framing/parity/overflow was not being detected
at all in PIO mode, and this fixes newer parts where
break/framing/parity/overflow was being reported all the time
without being cleared.

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2007-12-24 19:40:05 +08:00
Mike Frysinger 40edad3efa [Blackfin] arch: add bfin_clear_PPIx_STATUS() helper funcs like we have for other parts
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-02-25 15:23:30 +08:00
Mike Frysinger fee40119a2 [Blackfin] arch: make sure we have proper description/copyright/license lines
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-02-25 15:06:07 +08:00
Michael Hennerich 3927819d51 [Blackfin] arch: Fix CONFIG_PM support for BF561
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-02-25 14:39:50 +08:00
Michael Hennerich 464abc5de6 [Blackfin] arch: Cleanup abd Simplify:
- Simplify init_arch_irq
 - Make code more readable
 - Remove useless SSYNCs
 - Fix comments

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-02-25 13:50:20 +08:00
Martin Schwidefsky 257ce73473 Add pgtable_t to remaining nommu architectures
The pte_fn_t in include/linux/mm.h make it necessary for all architectures
to define a pgtable_t type, even those that do not have an mmu.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-09 11:08:33 -08:00
Mike Frysinger 920e526f93 [Blackfin] arch: import defines for BF547 -- it is just like the BF548, but no CAN
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-02-09 02:07:08 +08:00
Michael Hennerich 6e668936db [Blackfin] arch: Encourage users to use the spidev character driver: Provide platform support
- Enable kernel generic spidev driver for blackfin SPI ADC
 - spi_adc driver, document and test sample not synced

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-02-09 01:54:09 +08:00
Sonic Zhang 8b01eaff4f [Blackfin] arch: Enable UART2 and UART3 for bf548
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-02-02 16:31:00 +08:00
Tilman Schmidt a8c12385c2 [Blackfin] arch: remove duplicated definitions of the line discipline numbers N_* in asm-blackfin/termios.h
The definitions of the line discipline numbers N_* have been moved
from asm-*/termios.h to linux/tty.h, but the Blackfin architecture
has somehow evaded that move. Bring it in line with the others.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-02-02 16:14:53 +08:00
Mike Frysinger 80f31c8a03 [Blackfin] arch: change the trace buffer control start/stop logic in the exception handlers
To save/restore the trace buffer control so that if we take an exception
after turning off the trace buffer at a higher level we dont inadvertently
turn the trace buffer back on

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-02-02 15:47:24 +08:00
Michael Hennerich cfefe3c683 [Blackfin] arch: hook up set_irq_wake in Blackfin's irq code
- Add support for irq_wake on system and gpio interrupts
 - Remove outdated kernel options
 - Add option to select default PM mode
 - Fix various places where SIC_IWRx was only handled partially

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
2008-02-09 04:12:37 +08:00