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2012-04-30powerpc/pseries: Rivet CONFIG_EEH for pSeries platformGavin Shan
Recently, Ryan Wang tried to compile PPC pSeries platform without CONFIG_EEH and eventually run into errors. Nishanth Aravamudan helped to narrow down the root cause. Actually, the pSeries platform depends on CONFIG_EEH heavily and that won't work properly without EEH support. According to Ben's suggestion, the patch make CONFIG_EEH invisible and keep it as always selected on pSeries platform. Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-04-30powerpc/irqdomain: Fix broken NR_IRQ referencesGrant Likely
The switch from using irq_map to irq_alloc_desc*() for managing irq number allocations introduced new bugs in some of the powerpc interrupt code. Several functions rely on the value of NR_IRQS to determine the maximum irq number that could get allocated. However, with sparse_irq and using irq_alloc_desc*() the maximum possible irq number is now specified with 'nr_irqs' which may be a number larger than NR_IRQS. This has caused breakage on powermac when CONFIG_NR_IRQS is set to 32. This patch removes most of the direct references to NR_IRQS in the powerpc code and replaces them with either a nr_irqs reference or by using the common for_each_irq_desc() macro. The powerpc-specific for_each_irq() macro is removed at the same time. Also, the Cell axon_msi driver is refactored to remove the global build assumption on the size of NR_IRQS and instead add a limit to the maximum irq number when calling irq_domain_add_nomap(). Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-04-23powerpc/pmac: Don't add_timer() twiceBenjamin Herrenschmidt
If the interrupt and the timeout happen roughly at the same time, we can get into a situation where the timer function is run while the interrupt has already been processed. In this case, the timer function might end up doing an add_timer on an already pending timer, causing a BUG_ON() to trigger. Instead, just skip the whole timeout operation if we see that the timer is pending. The spinlock ensures that the only way that happens is if we already started a new operation and thus the timeout can be ignored. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-04-23powerpc/eeh: Fix crash caused by null eeh_devGavin Shan
The problem was reported by Anton Blanchard. While EEH error happened to the PCI device without the corresponding device driver, kernel crash was seen. Eventually, I successfully reproduced the problem on Firebird-L machine with utility "errinjct". Initially, the device driver for Emulex ethernet MAC has been disabled from .config and force data parity on the Emulex ethernet MAC with help of "errinjct". Eventually, I saw the kernel crash after issueing couple of "lspci -v" command. The root cause behind is that the PCI device, including the reference to the corresponding eeh device, will be removed from the system while EEH does recovery. Afterwards, the PCI device will be probed again and added into the system accordingly. So it's not safe to retrieve the eeh device from the corresponding PCI device after the PCI device has been removed and not added again. The patch fixes the issue and retrieve the eeh device from OF node instead of PCI device after the PCI device has been removed. Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Tested-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-04-23Merge remote-tracking branch 'kumar/merge' into mergeBenjamin Herrenschmidt
2012-04-19powerpc/85xx: don't call of_platform_bus_probe() twiceTimur Tabi
Commit 46d026ac ("powerpc/85xx: consolidate of_platform_bus_probe calls") replaced platform-specific of_device_id tables with a single function that probes the most of the busses in 85xx device trees. If a specific platform needed additional busses probed, then it could call of_platform_bus_probe() again. Typically, the additional platform-specific busses are children of existing busses that have already been probed. of_platform_bus_probe() does not handle those child busses automatically. Unfortunately, this doesn't actually work. The second (platform-specific) call to of_platform_bus_probe() never finds any of the busses it's asked to find. To remedy this, the platform-specific of_device_id tables are eliminated, and their entries are merged into mpc85xx_common_ids[], so that all busses are probed at once. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-04-12irq_domain: Move irq_virq_count into NOMAP revmapGrant Likely
This patch replaces the old global setting of irq_virq_count that is only used by the NOMAP mapping and instead uses a revmap_data property so that the maximum NOMAP allocation can be set per NOMAP irq_domain. There is exactly one user of irq_virq_count in-tree right now: PS3. Also, irq_virq_count is only useful for the NOMAP mapping. So, instead of having a single global irq_virq_count values, this change drops it entirely and added a max_irq argument to irq_domain_add_nomap(). That makes it a property of an individual nomap irq domain instead of a global system settting. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Tested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Milton Miller <miltonm@bga.com>
2012-04-04Merge branch 'for-linus' of ↵Linus Torvalds
git://git.linaro.org/people/mszyprowski/linux-dma-mapping Pull DMA mapping branch from Marek Szyprowski: "Short summary for the whole series: A few limitations have been identified in the current dma-mapping design and its implementations for various architectures. There exist more than one function for allocating and freeing the buffers: currently these 3 are used dma_{alloc, free}_coherent, dma_{alloc,free}_writecombine, dma_{alloc,free}_noncoherent. For most of the systems these calls are almost equivalent and can be interchanged. For others, especially the truly non-coherent ones (like ARM), the difference can be easily noticed in overall driver performance. Sadly not all architectures provide implementations for all of them, so the drivers might need to be adapted and cannot be easily shared between different architectures. The provided patches unify all these functions and hide the differences under the already existing dma attributes concept. The thread with more references is available here: http://www.spinics.net/lists/linux-sh/msg09777.html These patches are also a prerequisite for unifying DMA-mapping implementation on ARM architecture with the common one provided by dma_map_ops structure and extending it with IOMMU support. More information is available in the following thread: http://thread.gmane.org/gmane.linux.kernel.cross-arch/12819 More works on dma-mapping framework are planned, especially in the area of buffer sharing and managing the shared mappings (together with the recently introduced dma_buf interface: commit d15bd7ee445d "dma-buf: Introduce dma buffer sharing mechanism"). The patches in the current set introduce a new alloc/free methods (with support for memory attributes) in dma_map_ops structure, which will later replace dma_alloc_coherent and dma_alloc_writecombine functions." People finally started piping up with support for merging this, so I'm merging it as the last of the pending stuff from the merge window. Looks like pohmelfs is going to wait for 3.5 and more external support for merging. * 'for-linus' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping: common: DMA-mapping: add NON-CONSISTENT attribute common: DMA-mapping: add WRITE_COMBINE attribute common: dma-mapping: introduce mmap method common: dma-mapping: remove old alloc_coherent and free_coherent methods Hexagon: adapt for dma_map_ops changes Unicore32: adapt for dma_map_ops changes Microblaze: adapt for dma_map_ops changes SH: adapt for dma_map_ops changes Alpha: adapt for dma_map_ops changes SPARC: adapt for dma_map_ops changes PowerPC: adapt for dma_map_ops changes MIPS: adapt for dma_map_ops changes X86 & IA64: adapt for dma_map_ops changes common: dma-mapping: introduce generic alloc() and free() methods
2012-04-02powerpc/eeh: Fix use of set_current_state() in eeh event handling ↵Andrew Morton
set_current_state() wart That set_current_state() won't work very well: the subsequent mutex_lock() might flip the task back into TASK_RUNNING. Attempt to put it somewhere where it might have been meant to be, and attempt to describe why it might have been added. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-04-02powerpc/eeh: Remove eeh_event_handler()->daemonize()Oleg Nesterov
daemonize() is only needed when a user-space task does kernel_thread(). eeh_event_handler() thread is created by the worker kthread, and thus it doesn't need the soon-to-be-deprecated daemonize(). Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Linas Vepstas <linasvepstas@gmail.com> Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-04-02powerpc: Mark const init data with __initconst instead of __initdataUwe Kleine-König
As long as there is no other non-const variable marked __initdata in the same compilation unit it doesn't hurt. If there were one however compilation would fail with error: $variablename causes a section type conflict because a section containing const variables is marked read only and so cannot contain non-const variables. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Josh Boyer <jwboyer@gmail.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Anatolij Gustschin <agust@denx.de> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: linuxppc-dev@lists.ozlabs.org Cc: cbe-oss-dev@lists.ozlabs.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-04-02Merge remote-tracking branch 'kumar/next' into mergeBenjamin Herrenschmidt
2012-03-29Merge branch 'x86-x32-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x32 support for x86-64 from Ingo Molnar: "This tree introduces the X32 binary format and execution mode for x86: 32-bit data space binaries using 64-bit instructions and 64-bit kernel syscalls. This allows applications whose working set fits into a 32 bits address space to make use of 64-bit instructions while using a 32-bit address space with shorter pointers, more compressed data structures, etc." Fix up trivial context conflicts in arch/x86/{Kconfig,vdso/vma.c} * 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (71 commits) x32: Fix alignment fail in struct compat_siginfo x32: Fix stupid ia32/x32 inversion in the siginfo format x32: Add ptrace for x32 x32: Switch to a 64-bit clock_t x32: Provide separate is_ia32_task() and is_x32_task() predicates x86, mtrr: Use explicit sizing and padding for the 64-bit ioctls x86/x32: Fix the binutils auto-detect x32: Warn and disable rather than error if binutils too old x32: Only clear TIF_X32 flag once x32: Make sure TS_COMPAT is cleared for x32 tasks fs: Remove missed ->fds_bits from cessation use of fd_set structs internally fs: Fix close_on_exec pointer in alloc_fdtable x32: Drop non-__vdso weak symbols from the x32 VDSO x32: Fix coding style violations in the x32 VDSO code x32: Add x32 VDSO support x32: Allow x32 to be configured x32: If configured, add x32 system calls to system call tables x32: Handle process creation x32: Signal-related system calls x86: Add #ifdef CONFIG_COMPAT to <asm/sys_ia32.h> ...
2012-03-29powerpc/8xxx: remove 85xx/86xx restrictions from fsl_guts.hTimur Tabi
Remove the check for CONFIG_PPC_85xx and CONFIG_PPC_86xx from fsl_guts.h. The check was originally intended to allow the same header file to be used on 85xx and 86xx systems, even though the Global Utilities register could be different. It turns out that they're not actually different, and so the check is not necessary. In addition, neither macro is defined for 64-bit e5500 kernels, so that causes a build break. Signed-off-by: Timur Tabi <timur@freescale.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-03-28Merge tag 'split-asm_system_h-for-linus-20120328' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system Pull "Disintegrate and delete asm/system.h" from David Howells: "Here are a bunch of patches to disintegrate asm/system.h into a set of separate bits to relieve the problem of circular inclusion dependencies. I've built all the working defconfigs from all the arches that I can and made sure that they don't break. The reason for these patches is that I recently encountered a circular dependency problem that came about when I produced some patches to optimise get_order() by rewriting it to use ilog2(). This uses bitops - and on the SH arch asm/bitops.h drags in asm-generic/get_order.h by a circuituous route involving asm/system.h. The main difficulty seems to be asm/system.h. It holds a number of low level bits with no/few dependencies that are commonly used (eg. memory barriers) and a number of bits with more dependencies that aren't used in many places (eg. switch_to()). These patches break asm/system.h up into the following core pieces: (1) asm/barrier.h Move memory barriers here. This already done for MIPS and Alpha. (2) asm/switch_to.h Move switch_to() and related stuff here. (3) asm/exec.h Move arch_align_stack() here. Other process execution related bits could perhaps go here from asm/processor.h. (4) asm/cmpxchg.h Move xchg() and cmpxchg() here as they're full word atomic ops and frequently used by atomic_xchg() and atomic_cmpxchg(). (5) asm/bug.h Move die() and related bits. (6) asm/auxvec.h Move AT_VECTOR_SIZE_ARCH here. Other arch headers are created as needed on a per-arch basis." Fixed up some conflicts from other header file cleanups and moving code around that has happened in the meantime, so David's testing is somewhat weakened by that. We'll find out anything that got broken and fix it.. * tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system: (38 commits) Delete all instances of asm/system.h Remove all #inclusions of asm/system.h Add #includes needed to permit the removal of asm/system.h Move all declarations of free_initmem() to linux/mm.h Disintegrate asm/system.h for OpenRISC Split arch_align_stack() out from asm-generic/system.h Split the switch_to() wrapper out of asm-generic/system.h Move the asm-generic/system.h xchg() implementation to asm-generic/cmpxchg.h Create asm-generic/barrier.h Make asm-generic/cmpxchg.h #include asm-generic/cmpxchg-local.h Disintegrate asm/system.h for Xtensa Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt] Disintegrate asm/system.h for Tile Disintegrate asm/system.h for Sparc Disintegrate asm/system.h for SH Disintegrate asm/system.h for Score Disintegrate asm/system.h for S390 Disintegrate asm/system.h for PowerPC Disintegrate asm/system.h for PA-RISC Disintegrate asm/system.h for MN10300 ...
2012-03-28Disintegrate asm/system.h for PowerPCDavid Howells
Disintegrate asm/system.h for PowerPC. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> cc: linuxppc-dev@lists.ozlabs.org
2012-03-28PowerPC: adapt for dma_map_ops changesAndrzej Pietrasiewicz
Adapt core PowerPC architecture code for dma_map_ops changes: replace alloc/free_coherent with generic alloc/free methods. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> [added missing changes to arch/powerpc/kernel/vio.c] Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
2012-03-28powerpc: Random little legacy iSeries removal tidy upsStephen Rothwell
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28powerpc/pseries: Cut down on enthusiastic use of defines in RAS codeAnton Blanchard
So many defines for such a little file. Most of them can go. Also remove the single entry changelog, we have git for that. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28powerpc/pseries: Clean up ras_error_interrupt codeAnton Blanchard
The RAS error interrupt is no longer used but we may as well mirror the changes we made to the EPOW interrupt. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28powerpc/pseries: Remove RTAS_POWERMGM_EVENTSAnton Blanchard
IBM bit 2 in the rtas event-scan and check-exception calls is marked reserved in the PAPR, so remove it from our RAS code. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28powerpc/pseries: Use rtas_get_sensor in RAS codeAnton Blanchard
We have rtas_get_sensor so we may as well use it. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28powerpc/pseries: Parse and handle EPOW interruptsAnton Blanchard
We have code to take environmental and power warning (EPOW) interrupts but it simply prints a terse error message: EPOW <0x6240040000000b8 0x0 0x0> which tells us nothing about what happened. Even worse, if we don't correctly respond to the interrupt we may get terminated by firmware. Add code to printk some useful information when we get EPOW events. We want to make it clear that we have an error, that it was reported by firmware and that the RTAS error log will have more detailed information. eg: Ambient temperature too high reported by firmware. Check RTAS error log for details Depending on the error encountered, we now issue an immediate or an orderly power down. Move initialization of the EPOW interrupt earlier in boot since we want to respond to them as early as possible. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28powerpc: Make function that parses RTAS error logs globalAnton Blanchard
The IO event interrupt code has a function that finds specific sections in an RTAS error log. We want to use it in the EPOW code so make it global. Rename things to make it less cryptic: find_xelog_section() -> get_pseries_errorlog() struct pseries_elog_section -> struct pseries_errorlog Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28powerpc/eeh: Retrieve PHB from global listGavin Shan
Currently, the existing PHBs are retrieved from the FDT (Flat Device Tree) based on the name of FDT node. Specificly, those FDT nodes whose names have prefix "pci" are regarded as PHBs. That's inappropriate because some PCI bridges possibilly have names leading with "pci". It caused EEH is enabled on same PCI devices for towice. The patch fixes the above issue. Besides, the PHBs are expected to be figured out from FDT before enable EEH on them. Therefore, it's resonable to retrieve the PHBs from the global linked list traced by variable "hose_list" insteading poking them from FDT. For the EEH implementation on pSeries platform, RTAS is critical because all low-level functions are implemented based on RTAS. Therefore, we should make sure "/rtas" OF node is available and ready before to enable EEH core. However, it actually introduced duplicate since the previous pSeries platform dependent initialization function already do the check. Besides, we want to make eeh core platform independent, so RTAS related staff should be removed there. The patch removes the duplicate check on "/rtas" OF node for eeh core. Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28powerpc/eeh: Remove eeh information from pci_dnGavin Shan
The patch removes the eeh information from pci_dn since the eeh device (struct eeh_dev) already contained those information and the copy in pci_dn is no longer used except for the pseries iommu mapping code, which we change to retrieve the PE address from eeh device instead. Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28powerpc/eeh: Remove eeh device from OF nodeGavin Shan
Originally, the PCI sensitive OF node is tracing the eeh device through struct device_node->edev. However, it was regarded as bad idea. The patch removes struct device_node->edev and uses PCI_DN to trace the corresponding eeh device according to BenH's comments. Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-23Merge branch 'linux-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci Pull PCI changes (including maintainer change) from Jesse Barnes: "This pull has some good cleanups from Bjorn and Yinghai, as well as some more code from Yinghai to better handle resource re-allocation when enabled. There's also a new initcall_debug feature from Arjan which will print out quirk timing information to help identify slow quirks for fixing or refinement (Yinghai sent in a few patches to do just that once the new debug code landed). Beyond that, I'm handing off PCI maintainership to Bjorn Helgaas. He's been a core PCI and Linux contributor for some time now, and has kindly volunteered to take over. I just don't feel I have the time for PCI review and work that it deserves lately (I've taken on some other projects), and haven't been as responsive lately as I'd like, so I approached Bjorn asking if he'd like to manage things. He's going to give it a try, and I'm confident he'll do at least as well as I have in keeping the tree managed, patches flowing, and keeping things stable." Fix up some fairly trivial conflicts due to other cleanups (mips device resource fixup cleanups clashing with list handling cleanup, ppc iseries removal clashing with pci_probe_only cleanup etc) * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci: (112 commits) PCI: Bjorn gets PCI hotplug too PCI: hand PCI maintenance over to Bjorn Helgaas unicore32/PCI: move <asm-generic/pci-bridge.h> include to asm/pci.h sparc/PCI: convert devtree and arch-probed bus addresses to resource powerpc/PCI: allow reallocation on PA Semi powerpc/PCI: convert devtree bus addresses to resource powerpc/PCI: compute I/O space bus-to-resource offset consistently arm/PCI: don't export pci_flags PCI: fix bridge I/O window bus-to-resource conversion x86/PCI: add spinlock held check to 'pcibios_fwaddrmap_lookup()' PCI / PCIe: Introduce command line option to disable ARI PCI: make acpihp use __pci_remove_bus_device instead PCI: export __pci_remove_bus_device PCI: Rename pci_remove_behind_bridge to pci_stop_and_remove_behind_bridge PCI: Rename pci_remove_bus_device to pci_stop_and_remove_bus_device PCI: print out PCI device info along with duration PCI: Move "pci reassigndev resource alignment" out of quirks.c PCI: Use class for quirk for usb host controller fixup PCI: Use class for quirk for ti816x class fixup PCI: Use class for quirk for intel e100 interrupt fixup ...
2012-03-21Merge branch 'next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc Pull powerpc merge from Benjamin Herrenschmidt: "Here's the powerpc batch for this merge window. It is going to be a bit more nasty than usual as in touching things outside of arch/powerpc mostly due to the big iSeriesectomy :-) We finally got rid of the bugger (legacy iSeries support) which was a PITA to maintain and that nobody really used anymore. Here are some of the highlights: - Legacy iSeries is gone. Thanks Stephen ! There's still some bits and pieces remaining if you do a grep -ir series arch/powerpc but they are harmless and will be removed in the next few weeks hopefully. - The 'fadump' functionality (Firmware Assisted Dump) replaces the previous (equivalent) "pHyp assisted dump"... it's a rewrite of a mechanism to get the hypervisor to do crash dumps on pSeries, the new implementation hopefully being much more reliable. Thanks Mahesh Salgaonkar. - The "EEH" code (pSeries PCI error handling & recovery) got a big spring cleaning, motivated by the need to be able to implement a new backend for it on top of some new different type of firwmare. The work isn't complete yet, but a good chunk of the cleanups is there. Note that this adds a field to struct device_node which is not very nice and which Grant objects to. I will have a patch soon that moves that to a powerpc private data structure (hopefully before rc1) and we'll improve things further later on (hopefully getting rid of the need for that pointer completely). Thanks Gavin Shan. - I dug into our exception & interrupt handling code to improve the way we do lazy interrupt handling (and make it work properly with "edge" triggered interrupt sources), and while at it found & fixed a wagon of issues in those areas, including adding support for page fault retry & fatal signals on page faults. - Your usual random batch of small fixes & updates, including a bunch of new embedded boards, both Freescale and APM based ones, etc..." I fixed up some conflicts with the generalized irq-domain changes from Grant Likely, hopefully correctly. * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (141 commits) powerpc/ps3: Do not adjust the wrapper load address powerpc: Remove the rest of the legacy iSeries include files powerpc: Remove the remaining CONFIG_PPC_ISERIES pieces init: Remove CONFIG_PPC_ISERIES powerpc: Remove FW_FEATURE ISERIES from arch code tty/hvc_vio: FW_FEATURE_ISERIES is no longer selectable powerpc/spufs: Fix double unlocks powerpc/5200: convert mpc5200 to use of_platform_populate() powerpc/mpc5200: add options to mpc5200_defconfig powerpc/mpc52xx: add a4m072 board support powerpc/mpc5200: update mpc5200_defconfig to fit for charon board Documentation/powerpc/mpc52xx.txt: Checkpatch cleanup powerpc/44x: Add additional device support for APM821xx SoC and Bluestone board powerpc/44x: Add support PCI-E for APM821xx SoC and Bluestone board MAINTAINERS: Update PowerPC 4xx tree powerpc/44x: The bug fixed support for APM821xx SoC and Bluestone board powerpc: document the FSL MPIC message register binding powerpc: add support for MPIC message register API powerpc/fsl: Added aliased MSIIR register address to MSI node in dts powerpc/85xx: mpc8548cds - add 36-bit dts ...
2012-03-21Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs pile 1 from Al Viro: "This is _not_ all; in particular, Miklos' and Jan's stuff is not there yet." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (64 commits) ext4: initialization of ext4_li_mtx needs to be done earlier debugfs-related mode_t whack-a-mole hfsplus: add an ioctl to bless files hfsplus: change finder_info to u32 hfsplus: initialise userflags qnx4: new helper - try_extent() qnx4: get rid of qnx4_bread/qnx4_getblk take removal of PF_FORKNOEXEC to flush_old_exec() trim includes in inode.c um: uml_dup_mmap() relies on ->mmap_sem being held, but activate_mm() doesn't hold it um: embed ->stub_pages[] into mmu_context gadgetfs: list_for_each_safe() misuse ocfs2: fix leaks on failure exits in module_init ecryptfs: make register_filesystem() the last potential failure exit ntfs: forgets to unregister sysctls on register_filesystem() failure logfs: missing cleanup on register_filesystem() failure jfs: mising cleanup on register_filesystem() failure make configfs_pin_fs() return root dentry on success configfs: configfs_create_dir() has parent dentry in dentry->d_parent configfs: sanitize configfs_create() ...
2012-03-21Merge tag 'dt-for-linus' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds
Pull core device tree changes for Linux v3.4 from Grant Likely: "This branch contains a minor documentation addition, a utility function for parsing string properties needed by some of the new ARM platforms, disables dynamic DT code that isn't used anywhere but on a few PPC machines, and exports DT node compatible data to userspace via UEVENT properties. Nothing earth shattering here." * tag 'dt-for-linus' of git://git.secretlab.ca/git/linux-2.6: of: Only compile OF_DYNAMIC on PowerPC pseries and iseries arm/dts: OMAP3: Add omap3evm and am335xevm support drivercore: Output common devicetree information in uevent of: Add of_property_match_string() to find index into a string list
2012-03-21Merge tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds
Pull irq_domain support for all architectures from Grant Likely: "Generialize powerpc's irq_host as irq_domain This branch takes the PowerPC irq_host infrastructure (reverse mapping from Linux IRQ numbers to hardware irq numbering), generalizes it, renames it to irq_domain, and makes it available to all architectures. Originally the plan has been to create an all-new irq_domain implementation which addresses some of the powerpc shortcomings such as not handling 1:1 mappings well, but doing that proved to be far more difficult and invasive than generalizing the working code and refactoring it in-place. So, this branch rips out the 'new' irq_domain and replaces it with the modified powerpc version (in a fully bisectable way of course). It converts all users over to the new API and makes irq_domain selectable on any architecture. No architecture is forced to enable irq_domain, but the infrastructure is required for doing OpenFirmware style irq translations. It will even work on SPARC even though SPARC has it's own mechanism for translating irqs at boot time. MIPS, microblaze, embedded x86 and c6x are converted too. The resulting irq_domain code is probably still too verbose and can be optimized more, but that can be done incrementally and is a task for follow-on patches." * tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux-2.6: (31 commits) dt: fix twl4030 for non-dt compile on x86 mfd: twl-core: Add IRQ_DOMAIN dependency devicetree: Add empty of_platform_populate() for !CONFIG_OF_ADDRESS (sparc) irq_domain: Centralize definition of irq_dispose_mapping() irq_domain/mips: Allow irq_domain on MIPS irq_domain/x86: Convert x86 (embedded) to use common irq_domain ppc-6xx: fix build failure in flipper-pic.c and hlwd-pic.c irq_domain/microblaze: Convert microblaze to use irq_domains irq_domain/powerpc: Replace custom xlate functions with library functions irq_domain/powerpc: constify irq_domain_ops irq_domain/c6x: Use library of xlate functions irq_domain/c6x: constify irq_domain structures irq_domain/c6x: Convert c6x to use generic irq_domain support. irq_domain: constify irq_domain_ops irq_domain: Create common xlate functions that device drivers can use irq_domain: Remove irq_domain_add_simple() irq_domain: Remove 'new' irq_domain in favour of the ppc one mfd: twl-core.c: Fix the number of interrupts managed by twl4030 of/address: add empty static inlines for !CONFIG_OF irq_domain: Add support for base irq and hwirq in legacy mappings ...
2012-03-20spufs: make register_filesystem the last potential failure exitAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20switch open-coded instances of d_make_root() to new helperAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-21powerpc: Remove FW_FEATURE ISERIES from arch codeStephen Rothwell
This is no longer selectable, so just remove all the dependent code. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-21powerpc/spufs: Fix double unlocksBenjamin Herrenschmidt
spufs return path has a bug where it could end up trying to unlock an inode mutex twice. Fix it. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-21Merge remote-tracking branch 'kumar/next' into nextBenjamin Herrenschmidt
2012-03-21Merge remote-tracking branch 'jwb/next' into nextBenjamin Herrenschmidt
2012-03-21powerpc/5200: convert mpc5200 to use of_platform_populate()Grant Likely
of_platform_populate() also handles nodes at the root of the tree, which is wanted for things like describing the sound complex. This patch converts mpc5200 support to use of_platform_populate() instead of of_platform_bus_probe(). Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Anatolij Gustschin <agust@denx.de>
2012-03-21powerpc/mpc52xx: add a4m072 board supportHeiko Schocher
Add DTS file for a4m072 board and add its name to the list of the supported boards. Signed-off-by: Heiko Schocher <hs@denx.de> cc: Grant Likely <grant.likely@secretlab.ca> cc: devicetree-discuss@ozlabs.org cc: Wolfgang Denk <wd@denx.de> cc: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Anatolij Gustschin <agust@denx.de>
2012-03-20powerpc/PCI: allow reallocation on PA SemiBjorn Helgaas
We believe there's no reason to prevent reallocation on PA Semi, so revert to the default of "allow reallocation if necessary." Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: linuxppc-dev@lists.ozlabs.org Tested-by: Olof Johansson <olof@lixom.net> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2012-03-17powerpc/44x: Add support PCI-E for APM821xx SoC and Bluestone boardVinh Nguyen Huu Tuong
This patch extends PCI-E driver to support PCI-E for APM821xx SoC on Bluestone board. Signed-off-by: Vinh Nguyen Huu Tuong <vhtnguyen@apm.com> Signed-off-by: Josh Boyer <jwboyer@gmail.com>
2012-03-17powerpc/44x: The bug fixed support for APM821xx SoC and Bluestone boardVinh Nguyen Huu Tuong
This patch consists of: - Fix the pvr mask for checking pvr in cputable.c - Fix the cpu name as consistent with cpu name is describled in dts file Signed-off-by: Vinh Nguyen Huu Tuong <vhtnguyen@apm.com> Signed-off-by: Josh Boyer <jwboyer@gmail.com>
2012-03-16powerpc: add support for MPIC message register APIJia Hongtao
Some MPIC implementations contain one or more blocks of message registers that are used to send messages between cores via IPIs. A simple API has been added to access (get/put, read, write, etc ...) these message registers. The available message registers are initially discovered via nodes in the device tree. A separate commit contains a binding for the message register nodes. Signed-off-by: Meador Inge <meador_inge@mentor.com> Signed-off-by: Jia Hongtao <B38951@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-03-16powerpc/85xx: mpc8548cds - Add FPGA node to dtschenhui zhao
Remove FPGA(CADMUS) macros in code. Move it to dts. Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Acked-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-03-16powerpc/85xx: mpc8548cds - Add RapidIO node to dtschenhui zhao
Enable RapidIO and add rapidio and rmu nodes to dts. Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-03-16powerpc/85xx: mpc85xxcds - Fix PCI I/O space resource of PCI bridgechenhui zhao
There is a PCI bridge(Tsi310) between the MPC8548 and a VIA southbridge chip. The bootloader sets the PCI bridge to open a window from 0x0000 to 0x1fff on the PCI I/O space. But the kernel can't set the I/O resource. In the routine pci_read_bridge_io(), if the base which is read from PCI_IO_BASE is equal to zero, the routine don't set the I/O resource of the child bus. To allow the legacy I/O space on the VIA southbridge to be accessed, use the fixup to fix the PCI I/O space of the PCI bridge. Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-03-16powerpc/85xx: Add Quicc Engine support for p1025rdbZhicheng Fan
Signed-off-by: Zhicheng Fan <b32736@freescale.com> Acked-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-03-16powerpc/85xx: Abstract common define of signal multiplex control for qeZhicheng Fan
The mpc85xx_rdb and mpc85xx_mds have commom define of signal multiplex for qe, so they need to go in common header, the patch abstract them to fsl_guts.h Signed-off-by: Zhicheng Fan <b32736@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-03-16powerpc/85xx: allow CONFIG_PHYS_64BIT to be selectableTimur Tabi
Remove the "select PHYS_64BIT" from the Kconfig entry for the P1022DS, so that large physical address support is a selectable option for non-CoreNet reference boards. The option is enabled in mpc85xx_[smp_]defconfig so that the default is unchanged. However, now it can be deselected. The P1022DS had this option defined because the default device tree for this board uses 36-bit addresses. This had the side-effect of forcing this option on for all boards that use mpc85xx_[smp_]defconfig. Some users may want to disable this feature to create an optimized configuration for boards with <= 2GB of RAM. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>