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2011-12-07MIPS: Alchemy: Basic support for the DB1300 board.Manuel Lauss
Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2867/ Patchwork: https://patchwork.linux-mips.org/patch/2919/ Patchwork: https://patchwork.linux-mips.org/patch/2928/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-12-07MIPS: Alchemy: Au1300 SoC supportManuel Lauss
Add basic support for the Au1300 variant(s): - New GPIO/Interrupt controller - DBDMA ids - USB setup - MMC support - enable various PSC drivers - detection code. Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2866/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-12-07MIPS: Alchemy: devboards: remove unneeded BCSR IRQ reg accManuel Lauss
Initially I had to write to both the MASK and ENABLE registers, otherwise the CPLD would generate tons of spurious interrupts. With the change to the demux handler to disable the muxed line, it is now sufficient to disable the interrupt by writing either the enable or mask register. Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2865/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-12-07MIPS: Alchemy: Drop MIRAGE/BOSPORUS board supportManuel Lauss
No test hardware and no (apparent) users. These boards seem very similar to the DB1500, so if required support can be brought back again (I have datasheets) but then with dedicated board code, not tacked on to DB1000 support. Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2864/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-12-07MIPS: Alchemy: remove PB1000 supportManuel Lauss
Noone seems to have test hardware or care anymore. Drop PB1000 support and along with it the old Alchemy PCMCIA socket driver. Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com> To: linux-mips@linux-mips.org Cc: netdev@vger.kernel.org Cc: linux-pcmcia@lists.infradead.org Patchwork: https://patchwork.linux-mips.org/patch/2881/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-12-07MIPS: Fix Jazz 64-bit build error.Ralf Baechle
Move add_wired_entry to its own header file from where it will be always included. Patch up other users of add_wired_entry to also include the header as needed. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-12-07MIPS: Fix up inconsistency in panic() string argument.Ralf Baechle
Panic() invokes printk() to add a \n internally, so panic arguments should not themselves end in \n. Panic invocations in arch/mips and elsewhere are inconsistently sometimes terminating in \n, sometimes not. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-12-07MIPS: Alchemy: Fix PCI PMManuel Lauss
Move PCI Controller PM to syscore_ops since the platform_driver PM methods are called way too late on resume and far too early on suspend (after and before PCI device resume/suspend). This also allows to simplify wired entry management a bit. Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3007/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-12-07ARM: OMAP2+: board-generic: Add missing handle_irq callbacksBenoit Cousson
The following commit: 6b2f55d7851aa358d3a99cff344c560c4967f042, is adding the support for the CONFIG_MULTI_IRQ_HANDLER but did not update all the machine descriptors supported in the DT board-generic.c file. It thus break the DT boot on OMAP3 and OMAP4 boards. Add the proper handle_irq callbacks for OMAP3 and OMAP4 generic machine descriptors. Signed-off-by: Benoit Cousson <b-cousson@ti.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-12-07oprofile, s390: Add event interface to the System z hardware sampling moduleAndreas Krebbel
With this patch the OProfile Basic Mode Sampling support for System z is enhanced with a counter file system. That way hardware sampling can be configured using the user space tools with only little modifications. With the patch by default new cpu_types (s390/z10, s390/z196) are returned in order to indicate that we are running a CPU which provides the hardware sampling facility. Existing user space tools will complain about an unknown cpu type. In order to be compatible with existing user space tools the `cpu_type' module parameter has been added. Setting the parameter to `timer' will force the module to return `timer' as cpu_type. The module will still try to use hardware sampling if available and the hwsampling virtual filesystem will be also be available for configuration. So this has a different effect than using the generic oprofile module parameter `timer=1'. If the basic mode sampling is enabled on the machine and the cpu_type=timer parameter is not used the kernel module will provide the following virtual filesystem: /dev/oprofile/0/enabled /dev/oprofile/0/event /dev/oprofile/0/count /dev/oprofile/0/unit_mask /dev/oprofile/0/kernel /dev/oprofile/0/user In the counter file system only the values of 'enabled', 'count', 'kernel', and 'user' are evaluated by the kernel module. Everything else must contain fixed values. The 'event' value only supports a single event - HWSAMPLING with value 0. The 'count' value specifies the hardware sampling rate as it is passed to the CPU measurement facility. The 'kernel' and 'user' flags can now be used to filter for samples when using hardware sampling. Additionally also the following file will be created: /dev/oprofile/timer/enabled This will always be the inverted value of /dev/oprofile/0/enabled. 0 is not accepted without hardware sampling. Signed-off-by: Andreas Krebbel <krebbel@linux.vnet.ibm.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
2011-12-07Merge branch 'samsung-fixes-2' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes
2011-12-07oprofile: Fix oprofile_timer_exit() breakageRobert Richter
Removing remainings of oprofile_timer_exit() completly. Signed-off-by: Robert Richter <robert.richter@amd.com>
2011-12-07x86: Add stack top margin for stack overflow checkingMitsuo Hayasaka
It seems that a margin for stack overflow checking is added to top of a kernel stack but is not added to IRQ and exception stacks in stack_overflow_check(). Therefore, the overflows of IRQ and exception stacks are always detected only after they actually occurred and data corruption might occur due to them. This patch adds the margin to top of IRQ and exception stacks as well as a kernel stack to enhance reliability. Signed-off-by: Mitsuo Hayasaka <mitsuo.hayasaka.hu@hitachi.com> Cc: yrl.pp-manager.tt@hitachi.com Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20111207082910.9847.3359.stgit@ltc219.sdl.hitachi.co.jp [ removed the #undef - we typically don't do that for uncommon names ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-12-07x86: Use the same node_distance for 32 and 64-bitH Hartley Sweeten
The node_distance function is not x86 64-bit specific. Having the #ifdef around the extern function declaration and the #define causes the default node_distance macro to be used in asm-generic/topology.h. This also causes a sparse warning in arch/x86/mm/numa.c when CONFIG_X86_64 is not set: warning: symbol '__node_distance' was not declared. Should it be static? Remove the #ifdef to fix both issues. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: David Rientjes <rientjes@google.com> Acked-by: Tejun Heo <tj@kernel.org> Cc: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/alpine.DEB.2.00.1112061220310.28251@chino.kir.corp.google.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-12-07Merge branch 'mpic' into nextBenjamin Herrenschmidt
2011-12-07powerpc/pci: Make pci_read_irq_line() staticBenjamin Herrenschmidt
It's only used inside the same file where it's defined. There's also no point exporting it anymore. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc/powernv: Workaround OFW issues in prom_init.cBenjamin Herrenschmidt
Open Firmware on OPAL machines seems to have issues if we close stdin and/or we try to print things after calling "quiesce" so we avoid doing both. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc/powernv: Display diag data on p7ioc EEH errorsBenjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc/powernv: Update OPAL interfacesBenjamin Herrenschmidt
This adds some more interfaces for OPAL v2 Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc: Define/use HUGETLB_NEED_PRELOAD insead of complicated #ifBecky Bruce
Define HUGETLB_NEED_PRELOAD in mmu-book3e.h for CONFIG_PPC64 instead of having a much more complicated #if block. This is easier to read and maintain. Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc/book3e: Change hugetlb preload to take vma argumentBecky Bruce
This avoids an extra find_vma() and is less error-prone. Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc: Enable hugetlb by default for corenet64 platformsBecky Bruce
Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc: Enable Hugetlb by default for 32-bit 85xx/corenetBecky Bruce
Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc: Kconfig updates for FSL BookE HUGETLB 64-bitBecky Bruce
Allow hugetlb to be enabled on 64b FSL_BOOK3E. No platforms enable it by default yet. Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc: Add gpages reservation code for 64-bit FSL BOOKEBecky Bruce
For 64-bit FSL_BOOKE implementations, gigantic pages need to be reserved at boot time by the memblock code based on the command line. This adds the call that handles the reservation, and fixes some code comments. It also removes the previous pr_err when reserve_hugetlb_gpages is called on a system without hugetlb enabled - the way the code is structured, the call is unconditional and the resulting error message spurious and confusing. Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc: Add hugepage support to 64-bit tablewalk code for FSL_BOOK3EBecky Bruce
Before hugetlb, at each level of the table, we test for !0 to determine if we have a valid table entry. With hugetlb, this compare becomes: < 0 is a normal entry 0 is an invalid entry > 0 is huge This works because the hugepage code pulls the top bit off the entry (which for non-huge entries always has the top bit set) as an indicator that we have a hugepage. Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc: Whitespace/comment changes to tlb_low_64e.SBecky Bruce
I happened to comment this code while I was digging through it; we might as well commit that. I also made some whitespace changes - the existing code had a lot of unnecessary newlines that I found annoying when I was working on my tiny laptop. No functional changes. Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc: hugetlb: modify include usage for FSL BookE codeBecky Bruce
The original 32-bit hugetlb implementation used PPC64 vs PPC32 to determine which code path to take. However, the final hugetlb implementation for 64-bit FSL ended up shared with the FSL 32-bit code so the actual check needs to be FSL_BOOK3E vs everything else. This patch changes the include protections to reflect this. There are also a couple of related comment fixes. Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc: Update hugetlb huge_pte_alloc and tablewalk code for FSL BOOKEBecky Bruce
This updates the hugetlb page table code to handle 64-bit FSL_BOOKE. The previous 32-bit work counted on the inner levels of the page table collapsing. Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc: Fix booke hugetlb preload code for PPC_MM_SLICES and 64-bitBecky Bruce
This patch does 2 things: It corrects the code that determines the size to write into MAS1 for the PPC_MM_SLICES case (this originally came from David Gibson and I had incorrectly altered it), and it changes the methodolody used to calculate the size for !PPC_MM_SLICES to work for 64-bit as well as 32-bit. Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc: hugetlb: fix huge_ptep_set_access_flags return valueBecky Bruce
There was an unconditional return of "1" in the original code from David Gibson, and I dropped it because it wasn't needed for FSL BOOKE 32-bit. However, not all systems (including 64-bit FSL BOOKE) do loading of the hpte from the fault handler asm and depend on this function returning 1, which causes a call to update_mmu_cache() that writes an entry into the tlb. Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc: Only define HAVE_ARCH_HUGETLB_UNMAPPED_AREA if PPC_MM_SLICESBecky Bruce
If we don't have slices, we should be able to use the generic hugetlb_get_unmapped_area() code Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc/mpic: Add in-core support for cascaded MPICsKyle Moffett
The Cell and PowerMac platforms use virtually identical cascaded-IRQ setup code, so just merge it into the core. Ideally this code would trigger automatically when an MPIC device-node specifies an "interrupts" property, perhaps even enabling MPIC_SECONDARY along the way. Unfortunately, Benjamin Herrenschmidt has had bad experiences in the past with the quality of Apple PowerMac device-trees, so to be safe we will only try to parse out an IRQ if the MPIC_SECONDARY flag is set by the caller. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc/mpic: Cache the device-tree node in "struct mpic"Kyle Moffett
Store the node pointer in the MPIC during initialization so that all of the later operational code can just reuse the cached pointer. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc/mpic: Put "pic-no-reset" test back into the MPIC codeKyle Moffett
There's not really any reason to have this one-liner in a separate static inline function, given that all the other similar tests are already in the alloc_mpic() code. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc/mpic: Don't open-code dcr_resource_startKyle Moffett
Don't open-code the OpenFirmware "dcr-reg" property lookup trying to map DCR resources. This makes the code a bit easier to read. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc/mpic: Invert the meaning of MPIC_PRIMARYKyle Moffett
It turns out that there are only 2 in-tree platforms which use MPICs which are not "primary": IBM Cell and PowerMac. To reduce the complexity of the typical board setup code, invert the MPIC_PRIMARY bit into MPIC_SECONDARY. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc/mpic: Search for open-pic device-tree node if NULLKyle Moffett
Almost all PowerPC platforms use a standard "open-pic" device node so the mpic_alloc() function now accepts NULL for the device-node. This will cause it to perform a default search with of_find_matching_node(). Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc/mpic: Save computed phys_addr for board-specific codeKyle Moffett
The MPIC code can already perform an automatic OF address translation step as part of mpic_alloc(), but several boards need to use that base address when they perform mpic_assign_isu(). The easiest solution is to save the computed physical address into the "struct mpic" for later use by the board code. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc/mpic: Assume a device-node was passed in mpic_alloc()Kyle Moffett
All of the existing callers of mpic_alloc() pass in a non-NULL device-node pointer, so the checks for a NULL device-node may be removed. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc: Consolidate mpic_alloc() OF address translationKyle Moffett
Instead of using the open-coded "reg" property lookup and address translation in mpic_alloc(), directly call of_address_to_resource(). This includes various workarounds for special cases which the naive of_address_translate() does not. Afterwards it is possible to remove the copiously copy-pasted calls to of_address_translate() from the 85xx/86xx/powermac platforms. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-07powerpc/85xx: Move mpc85xx_smp_init() decl to a new "smp.h"Kyle Moffett
This removes a bunch of "extern" declarations and CONFIG_SMP ifdefs. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-12-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
2011-12-06PM / Domains: Make it possible to assign names to generic PM domainsRafael J. Wysocki
Add a name member pointer to struct generic_pm_domain and use it in diagnostic messages regarding the domain power-off and power-on latencies. Update the ARM shmobile SH7372 code to assign names to the PM domains used by it. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Magnus Damm <damm@opensource.se>
2011-12-06Merge branch 'kexec/idmap' of ↵Russell King
git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into devel-stable
2011-12-06ARM: 7194/1: OMAP: Fix build after a merge between v3.2-rc4 and ARM restart ↵Tony Lindgren
changes ARM restart changes needed changes to common.h to make it local. This conflicted with v3.2-rc4 DSS related hwmod changes that git mergetool was not able to handle. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-12-06x86, NMI: NMI-selftest should handle the UP case properlyDon Zickus
If no remote cpus are online, then just quietly skip the remote IPI test for now. Signed-off-by: Don Zickus <dzickus@redhat.com> Cc: andi@firstfloor.org Cc: torvalds@linux-foundation.org Cc: peterz@infradead.org Cc: robert.richter@amd.com Link: http://lkml.kernel.org/r/20111206180859.GR1669@redhat.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-12-06perf, x86: Expose perf capability to other modulesGleb Natapov
KVM needs to know perf capability to decide which PMU it can expose to a guest. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1320929850-10480-8-git-send-email-gleb@redhat.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-12-06perf, x86: Implement arch event mask as quirkPeter Zijlstra
Implement the disabling of arch events as a quirk so that we can print a message along with it. This creates some visibility into the problem space and could allow us to work on adding more work-around like the AAJ80 one. Requested-by: Ingo Molnar <mingo@elte.hu> Cc: Gleb Natapov <gleb@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-wcja2z48wklzu1b0nkz0a5y7@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-12-06x86, perf: Disable non available architectural eventsGleb Natapov
Intel CPUs report non-available architectural events in cpuid leaf 0AH.EBX. Use it to disable events that are not available according to CPU. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1320929850-10480-7-git-send-email-gleb@redhat.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
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