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* MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itselfRussell King2010-02-202-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On VIVT ARM, when we have multiple shared mappings of the same file in the same MM, we need to ensure that we have coherency across all copies. We do this via make_coherent() by making the pages uncacheable. This used to work fine, until we allowed highmem with highpte - we now have a page table which is mapped as required, and is not available for modification via update_mmu_cache(). Ralf Beache suggested getting rid of the PTE value passed to update_mmu_cache(): On MIPS update_mmu_cache() calls __update_tlb() which walks pagetables to construct a pointer to the pte again. Passing a pte_t * is much more elegant. Maybe we might even replace the pte argument with the pte_t? Ben Herrenschmidt would also like the pte pointer for PowerPC: Passing the ptep in there is exactly what I want. I want that -instead- of the PTE value, because I have issue on some ppc cases, for I$/D$ coherency, where set_pte_at() may decide to mask out the _PAGE_EXEC. So, pass in the mapped page table pointer into update_mmu_cache(), and remove the PTE value, updating all implementations and call sites to suit. Includes a fix from Stephen Rothwell: sparc: fix fallout from update_mmu_cache API change Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Merge commit 'gcl/merge' into mergeBenjamin Herrenschmidt2010-01-157-101/+418
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| * powerpc: Use scripts/mkuboot.sh instead of 'mkimage'Peter Tyser2009-12-301-2/+5
| | | | | | | | | | | | | | | | | | | | | | mkuboot.sh provides a basic wrapper for the 'mkimage' utility. Using mkuboot.sh provides clearer error reporting and allows a toolchain to use its own 'mkimage' executable specified by ${CROSS_COMPILE}mkimage. Additionally, this brings PowerPC in line with other architectures which already call mkimage via mkuboot.sh. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * powerpc/5200: update defconfigsGrant Likely2009-12-306-99/+413
| | | | | | | | Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | Merge commit 'kumar/merge' into mergeBenjamin Herrenschmidt2010-01-1552-1030/+3351
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| * | powerpc: 2.6.33 update of defconfigs for embedded 6xx/7xxx, 8xx, 8xxxKumar Gala2010-01-0652-1030/+3351
| | | | | | | | | | | | Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* | | powerpc: Move cpu hotplug driver lock from pseries to powerpcNathan Fontenot2010-01-152-14/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the defintion and lock helper routines for the cpu hotplug driver lock from pseries to powerpc code to avoid build breaks for platforms other than pseries that use cpu hotplug. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Acked-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc: Move /proc/ppc64 to /proc/powerpc updateNathan Fontenot2010-01-151-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It looks like the previous patch sent out to move RTAS and other items from /proc/ppc64 to /proc/powerpc missed a few files needed for RAS and DLPAR functionality. Original Patch here: http://lists.ozlabs.org/pipermail/linuxppc-dev/2009-September/076096.html This patch updates the remaining files to be created under /proc/powerpc. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/8xx: Fix user space TLB walk in dcbX fixupJoakim Tjernlund2010-01-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | The newly added fixup for buggy dcbX insn's has a bug that always trigger a kernel TLB walk so a user space dcbX insn will cause a Kernel Machine Check if it hits DTLB error. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc: Fix decrementer setup on 1GHz boardsStefan Roese2010-01-151-1/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We noticed that recent kernels didn't boot on our 1GHz Canyonlands 460EX boards anymore. As it seems, patch 8d165db1 [powerpc: Improve decrementer accuracy] introduced this problem. The routine div_sc() overflows with shift = 32 resulting in this incorrect setup: time_init: decrementer frequency = 1000.000012 MHz time_init: processor frequency = 1000.000012 MHz clocksource: timebase mult[400000] shift[22] registered clockevent: decrementer mult[33] shift[32] cpu[0] This patch now introduces a local div_dc64() version of this function so that this overflow doesn't happen anymore. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Detlev Zundel <dzu@denx.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/iseries: Initialise on-stack completionMichael Ellerman2010-01-151-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | get_viotape_info() declares a vio_waitevent on the stack, which contains a completion, but never initialises the completion. I have no idea how this ever worked, and on recent kernels it causes an oops in handle_tape_event() when we access the non-initialised completion. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc: Use helpers for rlimitsJiri Slaby2010-01-152-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make sure compiler won't do weird things with limits. E.g. fetching them twice may return 2 different values after writable limits are implemented. I.e. either use rlimit helpers added in 3e10e716abf3c71bdb5d86b8f507f9e72236c9cd or ACCESS_ONCE if not applicable. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: linuxppc-dev@ozlabs.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc: cpumask_of_node() should handle -1 as a nodeAnton Blanchard2010-01-151-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pcibus_to_node can return -1 if we cannot determine which node a pci bus is on. If passed -1, cpumask_of_node will negatively index the lookup array and pull in random data: # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpus 00000000,00000003,00000000,00000000 # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpulist 64-65 Change cpumask_of_node to check for -1 and return cpu_all_mask in this case: # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpus ffffffff,ffffffff,ffffffff,ffffffff # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpulist 0-127 Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/pseries: Fix dlpar compile warning without CONFIG_PROC_DEVICETREEFUJITA Tomonori2010-01-151-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cc1: warnings being treated as errors arch/powerpc/platforms/pseries/dlpar.c: In function 'dlpar_attach_node': arch/powerpc/platforms/pseries/dlpar.c:239: error: unused variable 'ent' arch/powerpc/platforms/pseries/dlpar.c: In function 'dlpar_detach_node': arch/powerpc/platforms/pseries/dlpar.c:271: error: unused variable 'prop' arch/powerpc/platforms/pseries/dlpar.c:270: error: unused variable 'parent' make[3]: *** [arch/powerpc/platforms/pseries/dlpar.o] Error 1 Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/pseries: Fix xics interrupt affinityAnton Blanchard2010-01-151-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 57b150cce8e004ddd36330490a68bfb59b7271e9 (irq: only update affinity if ->set_affinity() is sucessfull) broke xics irq affinity. We need to use the cpumask passed in, instead of accessing ->affinity directly. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/swsusp_32: Fix TLB invalidationAnton Vorontsov2010-01-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | It seems there is a thinko in the TLB invalidation code that makes the tlbie in the loop executed just once. The intended check was probably 'gt', not 'lt'. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/8xx: Always pin kernel instruction TLBJoakim Tjernlund2010-01-151-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Various kernel asm modifies SRR0/SRR1 just before executing a rfi. If such code crosses a page boundary you risk a TLB miss which will clobber SRR0/SRR1. Avoid this by always pinning kernel instruction TLB space. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | zlib: Fix build of powerpc boot wrapperBenjamin Herrenschmidt2010-01-131-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit ac4c2a3bbe5db5fc570b1d0ee1e474db7cb22585 broke the build of all powerpc boot wrappers. It attempts to add an include of autoconf.h but used the wrong path for it. It also adds -D__KERNEL__ to our boot wrapper, both things that we pretty much didn't do on purpose so far. We want our boot wrapper to remain independent enough of the kernel for various reasons, one of them being that you can "wrap" an existing kernel at distro install time which allows to ship one kernel image and a set of boot wrappers for different platforms, the wrappers don't have to be built out of the same kernel build tree. It's also incorrect to do what the patch does in our boot environment since we may not have a proper alignment exception handler which means we may not be able to fixup the few cases where an unaligned access will need SW emulation (depends on the core variant, could be when crossing page or segment boundaries for example). This patch fixes it by putting the old code back in and using the new "fancy" variant only when CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS is set, which happens not to be set on powerpc since we don't include autoconf.h. It also reverts the changes to our boot wrapper Makefile. This means that x86 should, afaik, keep the optimisations since its boot wrapper does include autoconf.h and define __KERNEL__ (though I doubt they make that much different outside of slow embedded processors). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | zlib: optimize inffast when copying direct from outputJoakim Tjernlund2010-01-111-1/+3
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | JFFS2 uses lesser compression ratio and inflate always ends up in "copy direct from output" case. This patch tries to optimize the direct copy procedure. Uses get_unaligned() but only in one place. The copy loop just above this one can also use this optimization, but I havn't done so as I have not tested if it is a win there too. On my MPC8321 this is about 17% faster on my JFFS2 root FS than the original. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Cc: Roel Kluin <roel.kluin@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2009-12-301-0/+13
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI/cardbus: Add a fixup hook and fix powerpc PCI: change PCI nomenclature in drivers/pci/ (non-comment changes) PCI: change PCI nomenclature in drivers/pci/ (comment changes) PCI: fix section mismatch on update_res() PCI: add Intel 82599 Virtual Function specific reset method PCI: add Intel USB specific reset method PCI: support device-specific reset methods PCI: Handle case when no pci device can provide cache line size hint PCI/PM: Propagate wake-up enable for PCIe devices too vgaarbiter: fix a typo in the vgaarbiter Documentation
| * | PCI/cardbus: Add a fixup hook and fix powerpcBenjamin Herrenschmidt2009-12-161-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The cardbus code creates PCI devices without ever going through the necessary fixup bits and pieces that normal PCI devices go through. There's in fact a commented out call to pcibios_fixup_bus() in there, it's commented because ... it doesn't work. I could make pcibios_fixup_bus() do the right thing on powerpc easily but I felt it cleaner instead to provide a specific hook pci_fixup_cardbus for which a weak empty implementation is provided by the PCI core. This fixes cardbus on powerbooks and probably all other PowerPC platforms which was broken completely for ever on some platforms and since 2.6.31 on others such as PowerBooks when we made the DMA ops mandatory (since those are setup by the fixups). Acked-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* | | KVM: powerpc: Fix mtsrin in book3s_64 mmuAlexander Graf2009-12-271-1/+21
| |/ |/| | | | | | | | | | | | | | | | | | | We were shifting the Ks/Kp/N bits one bit too far on mtsrin. It took me some time to figure that out, so I also put in some debugging and a comment explaining the conversion. This fixes current OpenBIOS boot on PPC64 KVM. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
* | powerpc/gc/wii: Remove get_irq_desc()Albert Herranz2009-12-212-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the following build failures: arch/powerpc/platforms/embedded6xx/flipper-pic.c: In function 'flipper_pic_map': arch/powerpc/platforms/embedded6xx/flipper-pic.c:105: error: implicit declaration of function 'get_irq_desc' arch/powerpc/platforms/embedded6xx/hlwd-pic.c: In function 'hlwd_pic_map': arch/powerpc/platforms/embedded6xx/hlwd-pic.c:98: error: implicit declaration of function 'get_irq_desc' These failures are caused by the changes introduced in commit "powerpc: Remove get_irq_desc()". The reason these drivers were not updated is that they weren't merged yet. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | powerpc/gc/wii: hlwd-pic: convert irq_desc.lock to raw_spinlockAlbert Herranz2009-12-211-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the following build failures: arch/powerpc/platforms/embedded6xx/hlwd-pic.c: In function 'hlwd_pic_irq_cascade': arch/powerpc/platforms/embedded6xx/hlwd-pic.c:135: error: passing argument 1 of 'spin_lock' from incompatible pointer type arch/powerpc/platforms/embedded6xx/hlwd-pic.c:137: error: passing argument 1 of 'spin_unlock' from incompatible pointer type arch/powerpc/platforms/embedded6xx/hlwd-pic.c:145: error: passing argument 1 of 'spin_lock' from incompatible pointer type arch/powerpc/platforms/embedded6xx/hlwd-pic.c:149: error: passing argument 1 of 'spin_unlock' from incompatible pointer type These failures are caused by the changes introduced in commit "genirq: Convert irq_desc.lock to raw_spinlock". The reason this driver was not updated is that it wasn't merged yet. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | Merge commit 'jwb/next' into mergeBenjamin Herrenschmidt2009-12-212-2/+52
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| * | powerpc/44x: Increase warp SD bufferSean MacLennan2009-12-111-1/+1
| | | | | | | | | | | | | | | | | | | | | Newer revs of the FPGA have a larger SD buffer. Signed-off-by: Sean MacLennan <smaclennan@pikatech.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
| * | powerpc/44x: Extend Katmai dts for ADMA and RAID56 supportAnatolij Gustschin2009-12-111-1/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add nodes for PPC440SPe DMA, I2O, XOR engines and Memory Queue module which are used in the updated PPC440SPe ADMA driver. Also extend plb ranges property to specify address ranges for DMA0/1 and I2O engines. Signed-off-by: Yuri Tikhonov <yur@emcraft.com> Signed-off-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
* | | Merge commit 'kumar/next' into mergeBenjamin Herrenschmidt2009-12-217-17/+206
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| * | | powerpc/85xx: Workaround MPC8572/MPC8536 GPIO 1 errata.Felix Radensky2009-12-101-1/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On MPC8572 and MPC8536 the status of GPIO pins configured as output cannot be determined by reading GPDAT register. Workaround by reading the status of input pins from GPDAT and the status of output pins from a shadow register. Signed-off-by: Felix Radensky <felix@embedded-sol.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/gpio: support gpio_to_irq()Peter Korsgaard2009-12-101-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gpiolib returns -ENXIO if struct gpio_chip::to_irq isn't set, so it's safe to always call. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/83xx: Add power management support for MPC8315E-RDB boardsAnton Vorontsov2009-12-101-0/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Add nodes for PMC and GTM controllers. GTM4 can be used as a wakeup source; - Add fsl,magic-packet properties to eTSEC nodes, i.e. wake-on-lan support. Unlike MPC8313 processors, MPC8315 can resume from deep sleep upon magic packet reception. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/83xx/suspend: Save and restore SICRL, SICRH and SCCRAnton Vorontsov2009-12-101-0/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need to save SICRL, SICRH and SCCR registers on suspend, and restore them on resume. Otherwise, we lose IO and clocks setup on MPC8315E-RDB boards when ULPI USB PHY is used (non-POR setup). Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/83xx/suspend: Clear deep_sleeping after devices resumeAnton Vorontsov2009-12-101-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently 83xx PMC driver clears deep_sleeping variable very early, before devices are resumed. This makes fsl_deep_sleep() unusable in drivers' resume() callback. Sure, drivers can store fsl_deep_sleep() value on suspend and use the stored value on resume. But a better solution is to postpone clearing the deep_sleeping variable, i.e. move it into finish() callback. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/cpm2_pic: Allow correct flow_types for port C interruptsMark Ware2009-12-101-7/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Port C interrupts can be either falling edge, or either edge. Other external interrupts are either falling edge or active low. Tested on a custom 8280 based board. Signed-off-by: Mark Ware <mware@elphinstone.net> Acked-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/83xx: mpc8349emitx - add leds-gpio bindingDmitry Eremin-Solenikov2009-12-091-0/+18
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/83xx: mpc8349emitx - add OF descriptions of LocalBus devicesDmitry Eremin-Solenikov2009-12-091-1/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Describe all LocalBus chipselects on MPC8349E-MITX board. Also add flash bindings. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/83xx: mpc8349emitx - populate I2C busses in device treeDmitry Eremin-Solenikov2009-12-091-0/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add OF descriptions of EEPROM, two GPIO extenders and SPD hanging on I2C on this board. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/83xx: mpc8349emitx - add gpio controller declarationsDmitry Eremin-Solenikov2009-12-091-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | mpc8349 bears two GPIO controllers. Enable support for them. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | | powerpc/fsl_pci: Fix P2P bridge handling for MPC83xx PCIe controllersAnton Vorontsov2009-12-091-2/+6
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It appears that we wrongly calculate dev_base for type1 config cycles. The thing is: we shouldn't subtract hose->first_busno because PCI core sets PCI primary, secondary and subordinate bus numbers, and PCIe controller actually takes the registers into account. So we should use just bus->number. Also, according to MPC8315 reference manual, primary bus number should always remain 0. We have PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS quirk in indirect_pci.c, but since 83xx is somewhat special, it doesn't use indirect_pci.c routines, so we have to implement the quirk specifically for 83xx PCIe controllers. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* | | powerpc/gamecube/wii: Fix off-by-one error in ugecon/usbgecko_udbgAlbert Herranz2009-12-182-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The retry logic in ug_putc() is broken. If the TX fifo is not ready and the counter runs out it will have a value of -1 and no transfer should be attempted. Also, a counter with a value of 0 means that the TX fifo got ready in the last try and the transfer should be attempted. Reported-by: "Juha Leppanen" <juha_motorsportcom@luukku.com> Signed-off-by: "Juha Leppanen" <juha_motorsportcom@luukku.com> Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/mpic: Fix problem that affinity is not updatedYang Li2009-12-181-13/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 57b150cce8e004ddd36330490a68bfb59b7271e9, desc->affinity of an irq is changed after calling desc->chip->set_affinity. Therefore we need to fix the irq_choose_cpu() not to depend on the desc->affinity for new mask. Signed-off-by: Jiajun Wu <b06378@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/mm: Fix stupid bug in subpge protection handlingDavid Gibson2009-12-181-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit d28513bc7f675d28b479db666d572e078ecf182d ("Fix bug in pagetable cache cleanup with CONFIG_PPC_SUBPAGE_PROT"), itself a fix for breakage caused by an earlier clean up patch of mine, contains a stupid bug. I changed the parameters of the subpage_protection() function, but failed to update one of the callers. This patch fixes it, and replaces a void * with a typed pointer so that the compiler will warn on such an error in future. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/iseries: use DECLARE_COMPLETION_ONSTACK for non-constant completionYong Zhang2009-12-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The _ONSTACK variant should be used for on-stack completion, otherwise it will break lockdep. Signed-off-by: Yong Zhang <yong.zhang0@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: linuxppc-dev@ozlabs.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc: Fix MSI support on U4 bridge PCIe slotBenjamin Herrenschmidt2009-12-182-8/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On machines using the Apple U4 bridge (AKA IBM CPC945) PCIe interface such as the latest generation G5 machines x16 slot or the x16 slot of the PowerStation, MSIs are currently broken (and will oops when enabling). This fixes the oops and implements proper support for those. Instead of using the PCIe <-> HT bridge conversion, on such slots we need to use a bunch of magic registers in the bridge as the MSI target, encoding the interrupt number in the low bits of the address itself Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc: Handle VSX alignment faults correctly in little-endian modeNeil Campbell2009-12-181-17/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes the handling of VSX alignment faults in little-endian mode (the current code assumes the processor is in big-endian mode). The patch also makes the handlers clear the top 8 bytes of the register when handling an 8 byte VSX load. This is based on 2.6.32. Signed-off-by: Neil Campbell <neilc@linux.vnet.ibm.com> Cc: <stable@kernel.org> Acked-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/mm: Fix typo of cpumask_clear_cpu()Yang Li2009-12-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | The function name of cpumask_clear_cpu was not correct. Fortunately nobody uses that code with hotplug yet :-) Reported-by: Jin Qing <b24347@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/mm: Fix hash_utils_64.c compile errors with DEBUG enabled.Sachin P. Sant2009-12-181-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This time without the funny characters. Fix following build errors generated with DEBUG=1 cc1: warnings being treated as errors arch/powerpc/mm/hash_utils_64.c: In function 'htab_dt_scan_page_sizes': arch/powerpc/mm/hash_utils_64.c:343: error: format '%04x' expects type 'unsigned int', but argument 4 has type 'long unsigned int' arch/powerpc/mm/hash_utils_64.c:343: error: format '%08x' expects type 'unsigned int', but argument 5 has type 'long unsigned int' arch/powerpc/mm/hash_utils_64.c: In function 'htab_initialize': arch/powerpc/mm/hash_utils_64.c:666: error: format '%x' expects type 'unsigned int', but argument 4 has type 'long unsigned int' ... SNIP ... Signed-off-by: Sachin Sant <sachinp@in.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc: Convert BUG() to use unreachable()David Daney2009-12-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new unreachable() macro instead of for(;;); Signed-off-by: David Daney <ddaney@caviumnetworks.com> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Paul Mackerras <paulus@samba.org> CC: linuxppc-dev@ozlabs.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/pseries: Make declarations of cpu_hotplug_driver_lock() ANSI compatible.Gautham R Shenoy2009-12-181-2/+4
| | | | | | | | | | | | | | | | | | | | | And add the __acquires() and __releases() annotations, while at it. Signed-off-by: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/pseries: Don't panic when H_PROD fails during cpu-online.Gautham R Shenoy2009-12-181-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If an online-attempt on a CPU which has been offlined using H_CEDE with an appropriate cede latency hint fails, don't panic. Instead print the error message and let the __cpu_up() code notify the CPU Hotplug framework of the failure, which in turn can notify the other subsystem through CPU_UP_CANCELED. Signed-off-by: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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