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2007-04-30[POWERPC] Avoid putting cpu node twiceJohn Rigby
Call of_find_node_by_type with NULL instead of np so the cpu node does not get put twice. This was causing kref_put warnings. Signed-off-by: John Rigby <jrigby@freescale.com> Acked-by: Sylvain Munaut <tnt@246tNt.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-30[POWERPC] Spinlock initializer cleanupThomas Gleixner
Use DEFINE_SPINLOCK instead of initializing spinlocks to SPIN_LOCK_UNLOCKED, since DEFINE_SPINLOCK is better for lockdep. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-30[POWERPC] get_property cleanupsStephen Rothwell
Just another pass through arch/powerpc for old usages. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-30[POWERPC] cell: cbe_cpufreq cleanup and crash fixOlof Johansson
cbe_cpufreq cleanups: * comment format * whitespace * don't init on non-cell platforms Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-30[POWERPC] Clean up cpufreq Kconfig dependenciesOlof Johansson
Shuffle Kconfig order, making the platform drivers menu depend on the global option instead of each driver being dependent on it. Also fix dependency of PPC_PMAC on the G5 one. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-30Revert "[POWERPC] Autodetect serial console on efika"Paul Mackerras
This reverts commit 9414715a7bbb45450015e9bc2676d85d919d08d4, at Olaf Hering's request: > Paul, please discard this patch. The optional graphics card may have > also device_type 'serial' if it is in VGA mode. > I will send an updated patch later.
2007-04-27[POWERPC] Generic check_legacy_ioportOlaf Hering
check_legacy_ioport makes only sense on PREP, CHRP and pSeries. They may have an isa node with PS/2, parport, floppy and serial ports. Remove the check_legacy_ioport call from ppc_md, it's not needed anymore. Hardware capabilities come from the device-tree. Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-27[POWERPC] pasemi: Cpufreq driverOlof Johansson
Cpufreq driver for PA Semi PWRficient processors. Signed-off-by: Egor Martovetsky <egor@pasemi.com> Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-27[POWERPC] pasemi: Kconfig for gpio_mdioOlof Johansson
arch/powerpc/platforms/pasemi/gpio_mdio.c really depends on CONFIG_PHYLIB. Add a config option for it, allow for it to be disabled if needed and fix the dependency. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-27[POWERPC] pasemi: Remove build warningOlof Johansson
arch/powerpc/platforms/pasemi/setup.c: In function 'pasemi_publish_devices': arch/powerpc/platforms/pasemi/setup.c:220: warning: implicit declaration of function 'of_platform_bus_probe' Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] Remove old interface find_devicesStephen Rothwell
Replace uses with of_find_node_by_name and for_each_node_by_name. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] Remove old interface find_type_devicesStephen Rothwell
Replaced by of_find_node_by_type. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] Remove old interface find_path_deviceStephen Rothwell
Replaced by of_find_node_by_path. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] Remove find_compatible_devicesStephen Rothwell
This is an old interface and is replaced by of_find_compatible_node. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] Rename MPIC_BROKEN_U3 to MPIC_U3_HT_IRQSMichael Ellerman
Rename MPIC_BROKEN_U3 to something a little more descriptive. Its effect is to enable support for HT irqs behind the PCI-X/HT bridge on U3/U4 (aka. CPC9x5) parts. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] Re-organize Kconfig code for 4xx in arch/powerpcDavid Gibson
Now that we always take a device tree in arch/powerpc, there's no good reason not to allow a single kernel to support multiple embedded 4xx boards - the correct platform code can be selected based on the device tree information. Therefore, this patch re-arranges the 4xx Kconfig code to allow this. In addition we: - use "select" instead of depends to configure the correct config options for specific 4xx CPUs and workarounds, which makes the information about specific boards and CPUs less scattered. - Some old, unused (in arch/powerpc) config options are removed: WANT_EARLY_SERIAL, IBM_OCP, etc. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] pasemi: GPIO MDIO of_platform driverOlof Johansson
MDIO driver for PHY's connected via GPIO as on the PA Semi Electra eval board. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] pasemi: Reset mpic on bootOlof Johansson
Reset MPIC on boot to clear some timer state that firmware might leave configured. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] pasemi: Allow 8KB config space for I/O bridgeOlof Johansson
Device 0 function 0 on the root bus is really a two-function bus agent, but only the first function is visible. Because of this, we need to allow config accesses into the second range. Modify the check for valid offsets accordingly. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] Rename last get_property callsStephen Rothwell
These got added recently. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24Merge branch 'for-2.6.22' of ↵Paul Mackerras
master.kernel.org:/pub/scm/linux/kernel/git/arnd/cell-2.6 into for-2.6.22
2007-04-24Merge branch 'spufs' of ↵Paul Mackerras
master.kernel.org:/pub/scm/linux/kernel/git/arnd/cell-2.6 into for-2.6.22
2007-04-24Merge branch 'kconfig' of ↵Paul Mackerras
master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc into for-2.6.22
2007-04-23[POWERPC] cell: enable RTAS-based PTCAL for Cell XDR memoryJeremy Kerr
Enable Periodic Recalibration (PTCAL) support for Cell XDR memory, using the new ibm,cbe-start-ptcal and ibm,cbe-stop-ptcal RTAS calls. Tested on QS20 and QS21 (by Thomas Huth). It seems that SLOF has problems disabling, at least on QS20; this patch should only be used once these problems have been addressed. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] cell: add support for proper device-treeChristian Krafft
This patch adds support for a proper device-tree. A porper device-tree on cell contains be nodes for each CBE containg nodes for SPEs and all the other special devices on it. Ofcourse oldschool devicetree is still supported. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] cell: use pmi in cpufreq driverChristian Krafft
The new PMI driver was added in order to support cpufreq on blades that require the frequency to be controlled by the service processor, so use it on those. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] cbe_thermal: add throttling attributes to cpu and spu nodesChristian Krafft
This patch adds some attributes the cpu and spu nodes: /sys/devices/system/[c|s]pu/[c|s]pu*/thermal/throttle_begin /sys/devices/system/[c|s]pu/[c|s]pu*/thermal/throttle_end /sys/devices/system/[c|s]pu/[c|s]pu*/thermal/throttle_full_stop Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] cbe_thermal: clean up computation of temperatureChristian Krafft
This patch introduces a little function for transforming register values into temperature. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] cell: add cbe_node_to_cpu functionChristian Krafft
This patch adds code to deal with conversion of logical cpu to cbe nodes. It removes code that assummed there were two logical CPUs per CBE. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spu_base: fix initialisation on systems with no SPEsJeremy Kerr
This change fixes the case where spu_base and spufs are initialised on a system with no SPEs - unconditionally create the spu_lists so spu_alloc doesn't explode, and check for spu_management ops before starting spufs. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> arch/powerpc/platforms/cell/spu_base.c | 7 ++++--- arch/powerpc/platforms/cell/spufs/inode.c | 5 +++++ 2 files changed, 9 insertions(+), 3 deletions(-)
2007-04-23[POWERPC] spu_base: remove cleanup_spu_baseChristoph Hellwig
spu_base.c is always built into the kernel image, so there is no need for a cleanup function. And some of the things it does are in the way for my following patches, so I'd rather get rid of it ASAP. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spufs: various run.c cleanupsChristoph Hellwig
- remove the spu_acquire_runnable from spu_run_init. I need to opencode it in spufs_run_spu in the next patch - remove various inline attributes, we don't really want to inline long functions with multiple callsites - cleanup return values and runcntl_write calls in spu_run_init - use normal kernel codingstyle in spu_reacquire_runnable Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spufs: enable SPU coredump for kernel-builtin spufsAkinobu Mita
spu_coredump_calls.owner is NULL in case of a builtin spufs, so the checks in here break. Check for the availability of the spu_coredump_calls variable instead. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spufs: fix memory leak on coredumpArnd Bergmann
Dynamically allocated read/write buffer in spufs_arch_write_note() will not be freed. Convert it to get_free_page at the same time. Cc: Akinobu Mita <mita@fixstars.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spufs: Minor cleanup of spu_waitJeremy Kerr
Change the loop in spu_wait to be a little more straightforward. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spufs: add mode= mount optionJeremy Kerr
Add a 'mode=' option to spufs mount arguments. This allows more control over access to the top-level spufs directory. Tested on Cell. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spufs: use memcpy_fromio() to copy from local storeAkinobu Mita
GCC may generates inline copy loop to handle memcpy() function instead of kernel defined memcpy(). But this inlined version of memcpy() causes an alignment interrupt when copying from local store. This patch uses memcpy_fromio() and memcpy_toio to copy local store to prevent memcpy() being inlined. Signed-off-by: Akinobu Mita <mita@fixstars.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spufs: avoid spurious memory barriersChristoph Hellwig
We now have proper locking around assignets of the mapping pointers, and the spin_unlock implies enough of a barrier to get rid of the explicit one. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spufs: fix memory leak on spufs reloadingAkinobu Mita
When SPU isolation mode enabled, isolated_loader would be allocated by spufs_init_isolated_loader() on module_init(). But anyone do not free it. This patch introduces spufs_exit_isolated_loader() which is the opposite of spufs_init_isolated_loader() and called on module_exit(). Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Akinobu Mita <mita@fixstars.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spufs: fix missing error handling in module_init()Akinobu Mita
spufs module_init forgot to call a few cleanup functions on error path. This patch also includes cosmetic changes in spu_sched_init() (identation fix and return error code). [modified by hch to apply ontop of the latest schedule changes] Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Akinobu Mita <mita@fixstars.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spufs: check spu_acquire_runnable() return valueAkinobu Mita
This patch checks return value of spu_acquire_runnable() in spufs_mfc_write(). Signed-off-by: Akinobu Mita <mita@fixstars.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spufs: turn run_sema into run_mutexChristoph Hellwig
There is no reason for run_sema to be a struct semaphore. Changing it to a mutex and rename it accordingly. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spufs: provide siginfo for SPE faultsJeremy Kerr
This change populates a siginfo struct for SPE application exceptions (ie, invalid DMAs and illegal instructions). Tested on an IBM Cell Blade. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spufs: make spu page faults not block schedulingArnd Bergmann
Until now, we have always entered the spu page fault handler with a mutex for the spu context held. This has multiple bad side-effects: - it becomes impossible to suspend the context during page faults - if an spu program attempts to access its own mmio areas through DMA, we get an immediate livelock when the nopage function tries to acquire the same mutex This patch makes the page fault logic operate on a struct spu_context instead of a struct spu, and moves it from spu_base.c to a new file fault.c inside of spufs. We now also need to copy the dar and dsisr contents of the last fault into the saved context to have it accessible in case we schedule out the context before activating the page fault handler. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spu_base: move spu_init_channels out of spu_mutexChristoph Hellwig
There is no reason to execute spu_init_channels under spu_mutex after the spu has been taken off the freelist it's ours. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spu sched: make addition to stop_wq and runque atomic vs wakeupLuke Browning
Addition to stop_wq needs to happen before adding to the runqeueue and under the same lock so that we don't have a race window for a lost wake up in the spu scheduler. Signed-off-by: Luke Browning <lukebrowning@us.ibm.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spufs: streamline locking for isolated spu setupChristoph Hellwig
For quite a while now spu state is protected by a simple mutex instead of the old rw_semaphore, and this means we can simplify the locking around spu_setup_isolated a lot. Instead of doing an spu_release before entering spu_setup_isolated and then calling the complicated spu_acquire_exclusive we can now simply enter the function locked an in guaranteed runnable state, so that the only bit of spu_acquire_exclusive that's left is the call to spu_unmap_mappings. Similarly there's no more need to unlock and reacquire the state_mutex when spu_setup_isolated is done, but we can always return with the lock held and only drop it in spu_run_init in the failure case. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spufs: remove woken threads from the runqueue earlyChristoph Hellwig
A single context should only be woken once, and we should not have more wakeups for a given priority than the number of contexts on that runqueue position. Also add some asserts to trap future problems in this area more easily. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spufs: add memory barriers after set_bitArnd Bergmann
set_bit does not guarantee ordering on powerpc, so using it for communication between threads requires explicit mb() calls. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] spu sched: ensure preempted threads are put back on the runqueue, ↵Christoph Hellwig
part2 To not lose a spu thread we need to make sure it always gets put back on the runqueue. In find_victim aswell as in the scheduler tick as done in the previous patch. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
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