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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] Fix comment typo in Kurobox device treeGrant Likely
Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] bootwrapper: Use `unsigned long' for malloc sizesGeert Uytterhoeven
Use `unsigned long' for malloc sizes, to match common practice and types used by most callers and callees. Also use `unsigned long' for integers representing pointers in simple_alloc. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@eu.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] Add arch/powerpc driver for UIC, PPC4xx interrupt controllerDavid Gibson
This patch adds a driver to arch/powerpc/sysdev for the UIC, the on-chip interrupt controller from IBM/AMCC 4xx chips. It uses the new irq host mapping infrastructure. Signed-off-by: David Gibson <dwg@au1.ibm.com> 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] kprobes: Eliminate sstep exception if instruction can be emulatedAnanth N Mavinakayanahalli
For cases when probes are placed on instructions that can be emulated, don't take the single-step exception. Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] Emulate more instructions in softwareAnanth N Mavinakayanahalli
Emulate a few more instructions in software - especially useful during singlestepping (xmon/kprobes). Instructions emulated with this patch are mfcr/mtcr rX, mfxer/mtxer rX, mflr/mtlr rX, mfctr/mtctr rX and mr rA,rB. Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] bootwrapper: cuboot for 83xxScott Wood
This adds cuboot support for MPC83xx platforms. A device tree used with this must have linux,stdout-path in /chosen and linux,network-index in any network device nodes that need mac addresses assigned. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] bootwrapper: Add ppcboot.hScott Wood
This file describes the bd_t struct, which is used by old versions of U-boot to pass information to the kernel. Platform code that needs to interoperate with such firmware can use this; it should not be used for anything new. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] bootwrapper: Add a cuboot platform and a cuImage targetScott Wood
The cuImage target will build a uImage with bootwrapper code and a device tree. The default device tree and platform file are determined by the kernel configuration. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] bootwrapper: Add CONFIG_DEVICE_TREEScott Wood
This provides a way to tell the bootwrapper makefile which device tree to include by default. The wrapper can still be invoked standalone to wrap with a different device tree without reconfiguring the kernel, if that is desired. The user will only be asked to provide a device tree if the platform selects CONFIG_WANT_DEVICE_TREE. Signed-off-by: Scott Wood <scottwood@freescale.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: PA6T oprofile supportOlof Johansson
Oprofile support for PA6T, kernel side. Also rename the PA6T_SPRN.* defines to SPRN_PA6T.*. 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: Enable one more hid bitOlof Johansson
Minor HID change. Firmware can't know that we want this set so we have to set it in the kernel. 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] Fix PowerPC 750CL and 750GX CPU featuresJosh Boyer
PowerPC 750CL has high BATs. The patch below adds a CPU_FTRS_750CL that includes that. Without it, the original firmware mappings in the high BATs aren't cleared which continue to override the linux translations. It also adds CPU_FTR_COMMON to CPU_FTRS_750GX for completeness. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> 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] update cell_defconfigArnd Bergmann
Sync with the Kconfig changes, and enable some options for celleb Cc: Ishizaki Kou <kou.ishizaki@toshiba.co.jp> Signed-off-by: Jens Osterkamp <jens@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
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] add of_iomap functionChristian Krafft
The of_iomap function maps memory for a given device_node and returns a pointer to that memory. This is used at some places, so it makes sense to a seperate function. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] pmi probe device by device-typeChristian Krafft
At the moment the pmi device driver is probing for devices with a given type and a given name. As there may be devices of the same type but with a different name, probing should be done also for device type only. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-04-23[POWERPC] add check for initialized driver data to pmi driverChristian Krafft
This patch adds a check for the private driver data to be initialized. The bug showed up, as the caller found a pmi device by it's type. Whereas the pmi driver probes for the type and the name. Since the name was not as the driver expected, it did not initialize. A more relaxed probing will be supplied with an extra patch, too. 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>