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* powerpc/fsl-booke: Add new ISA 2.06 page sizes and MAS definesKumar Gala2009-02-123-32/+50
| | | | | | | | | | | | | | | The Power ISA 2.06 added power of two page sizes to the embedded MMU architecture. Its done it such a way to be code compatiable with the existing HW. Made the minor code changes to support both power of two and power of four page sizes. Also added some new MAS bits and macros that are defined as part of the 2.06 ISA. Renamed some things to use the 'Book-3e' concept to convey the new MMU that is based on the Freescale Book-E MMU programming model. Note, its still invalid to try and use a page size that isn't supported by cpu. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* powerpc/85xx: Added 36-bit physical device tree for mpc8572ds boardKumar Gala2009-02-111-0/+787
| | | | | | | Added a device tree that should be identical to mpc8572ds.dtb except the physical addresses for all IO are above the 4G boundary. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* powerpc/85xx: Fixed PCI IO region sizes in mpc8572ds*.dtsKumar Gala2009-02-113-11/+11
| | | | | | The PCI IO region sizes where incorrectly set to 1M instead of 64k. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* powerpc/pseries: Return the number of MSIs we could allocateMichael Ellerman2009-02-111-7/+9
| | | | | | | | | | If we can't allocate the requested number of MSIs, we can still tell the generic code how many we were able to allocate. That can then be passed onto the driver, allowing it to request that many in future, and probably succeeed. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/pseries: Check for MSI-X also in rtas_msi_pci_irq_fixup()Michael Ellerman2009-02-111-2/+2
| | | | | | | | We also need to check that the device isn't using MSI-X in the irq fixup routine, otherwise we might leave MSI-Xs configured at boot. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/pseries: Add support for ibm,req#msi-xMichael Ellerman2009-02-111-5/+15
| | | | | | | | | | Firmware encodes the number of MSI-X requested by a device in a different property than for MSI. Pull the property name out as a parameter and share the logic for both cases. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/pseries: Fix MSI-X interrupt queryingMichael Ellerman2009-02-111-1/+1
| | | | | | | | We need to increment i in the loop that queries what interrupts firmware gave us, otherwise we'll incorrectly use the first value over and over. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* lmb: Rework lmb_dump_all() outputMichael Ellerman2009-02-111-21/+21
| | | | | | | | | | The lmb_dump_all() output didn't include the RMO size, which is interesting on powerpc. The output was also a bit spacey and not well aligned, and didn't show you the end addresses. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Allow debugging of LMBs with lmb=debugMichael Ellerman2009-02-111-5/+1
| | | | | | | | | | | | | The lmb debugging can be turned on at boottime with lmb=debug on the command line. However on powerpc that doesn't work, because we don't necessarily call lmb_dump_all(). So always call lmb_dump_all() after lmb_analyze(), no output is generated unless lmb=debug is found on the command line. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Remove unused ppc64_terminate_msg()Michael Ellerman2009-02-112-9/+0
| | | | | Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/pseries: Remove write only variable in PCI DLPARMilton Miller2009-02-111-2/+0
| | | | | | | | Since we never hotplug add an isa bus, we never need to set primary. Delete this write-only variable. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/numa: Remove redundant find_cpu_node()Milton Miller2009-02-111-31/+2
| | | | | | | | Use of_get_cpu_node, which is a superset of numa.c's find_cpu_node in a less restrictive section (text vs cpuinit). Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/numa: Avoid possible reference beyond prop. length in ↵Milton Miller2009-02-111-1/+1
| | | | | | | | | | | find_min_common_depth() find_min_common_depth() was checking the property length incorrectly. The value is in bytes not cells, and it is using the second entry. Signed-off-By: Milton Miller <miltonm@bga.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* Merge commit 'gcl/next' into nextBenjamin Herrenschmidt2009-02-1118-545/+1476
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| * powerpc/5200: Add support for the digsy MTC board.Grzegorz Bernacki2009-02-043-1/+261
| | | | | | | | | | | | | | Board support for the InterControl Digsy-MTC device based on the MPC5200B SoC. Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * powerpc/5200: Add support for the Media5200 board from FreescaleGrant Likely2009-02-045-1/+600
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds board support for the Media5200 platform. Changes are: - add the media5200 device tree - add the media5200 platform support code and cascaded interrupt controller - add media5200 to the build targets. Note: this patch also includes a minor tweak to the lite5200(b) target images list to add the .dtb files to the image list. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * powerpc/5200: Rework GPT driver to also be an IRQ controllerGrant Likely2009-02-043-86/+436
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds IRQ controller support to the MPC5200 General Purpose Timer (GPT) device driver. With this patch the mpc5200-gpt driver supports both GPIO and IRQ functions. The GPT driver was contained within the mpc52xx_gpio.c file, but this patch moves it out into a new file (mpc52xx_gpt.c) since it has more than just GPIO functionality now and it was only grouped with the mpc52xx-gpio drivers as a matter of convenience before. Also, this driver will most likely get extended again to also provide support for the timer function. Implementation note: Alternately, I could have tried to implement the IRQ support as a separate driver and left the GPIO portion alone. However, multiple functions of this device (ie. GPIO input+interrupt controller, or timer+GPIO) can be active at the same time and the registers are shared so it is safer to contain all functionality within a single driver. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
| * powerpc/5200: Refactor mpc5200 interrupt controller driverGrant Likely2009-02-041-88/+59
| | | | | | | | | | | | | | | | | | | | | | Rework the mpc5200-pic driver to simplify it and fix up the setting of desc->status when set_type is called for internal IRQs (so they are reported as level, not edge). The simplification is due to splitting off the handling of external IRQs into a separate block so they don't need to be handled as exceptions in the normal CRIT, MAIN and PERP paths. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * powerpc/5200: Remove pr_debug() from hot paths in irq driverGrant Likely2009-02-041-23/+0
| | | | | | | | | | | | | | | | | | pr_debug() calls in the 'hot' *_mask(), *_unmask(), *_ack() and get_irq() makes adding #define DEBUG pretty much useless. Remove these calls because they completely swamp the output. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
| * powerpc/5200: Don't specify IRQF_SHARED in PSC UART driverGrant Likely2009-02-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | The MPC5200 PSC device is wired up to a dedicated interrupt line which is never shared. This patch removes the IRQF_SHARED flag from the request_irq() call which eliminates the "IRQF_DISABLED is not guaranteed on shared IRQs" warning message from the console output. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
| * powerpc/5200: Trim cruft from device treesGrant Likely2009-02-036-314/+106
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Trim out obsolete/extraneous properties and tighten up some usage conventions. Changes include: - removal of device_type properties - removal of cell-index properties - Addition of gpio-controller and #gpio-cells properties to gpio nodes - Move common interrupt-parent property out of device nodes and into top level parent node. This patch also include what looks to be just trivial editorial whitespace/format changes, but there is real method in this madness. Editorial changes were made to keep the all the mpc5200 board device trees as similar as possible so that diffs between them only show the real differences between the boards. The pcm030 device tree was most affected by this because many of the comments had been changed from // to /* */ style and some cell values where changed from decimal to hex format when it was cloned from one of the other 5200 device trees. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
| * powerpc/5200: Stop using device_type and port-number propertiesGrant Likely2009-02-032-31/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is no reason for the PSC UART driver or the Ethernet driver to require a device_type property. The compatible value is sufficient to uniquely identify the device. Remove it from the driver. The whole 'port-number' scheme for assigning numbers to PSC uarts was always rather half baked and just adds complexity. Remove it from the driver. After this patch is applied, PSC UART numbers are simply assigned from the order they are found in the device tree (just like all the other devices). Userspace can query sysfs to determine what ttyPSC number is assigned to each PSC instance. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
* | Merge commit 'kumar/next' into nextBenjamin Herrenschmidt2009-02-1136-149/+3171
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| * | powerpc/83xx: Add FSL eSDHC support for MPC837x-RDB boardsAnton Vorontsov2009-02-063-0/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Simply add appropriate sdhci nodes. Note that U-Boot should configure pin multiplexing for eSDHC prior to Linux could use it. U-Boot should also fill-in the clock-frequency property (eSDHC clock depends on board-specific SCCR[ESDHCCM] bits). Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc/83xx: Convert existing sdhc nodes to new bindingsAnton Vorontsov2009-02-063-9/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - sdhc node renamed to sdhci ("sdhc" name is confusing since SDHC is used to name Secure Digital High Capacity cards, while SDHCI is an interface). - Get rid of "fsl,esdhc" compatible entry, it's replaced by the "fsl,<chip>-esdhc" scheme; - Get rid of `model' property. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc: Document FSL eSDHC bindingsAnton Vorontsov2009-02-061-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | This patch documents OF bindings for the Freescale Enhanced Secure Digital Host Controller. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc/83xx: Add lm75 to MPC837x RDB dtsReynes Philippe2009-02-023-0/+15
| | | | | | | | | | | | | | | Signed-off-by: Philippe Reynes <philippe.reynes@isismpp.fr> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc/85xx: TQM85xx - add i2c device nodes for LM75Wolfgang Grandegger2009-02-026-0/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | Automatic I2C device probing is not done any more. Therefore we need proper DTS device node definitions for the I2C LM75 thermal sensor on the TQM85xx modules. Signed-off-by: Wolfgang Grandegger <wg@grandegger.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc/85xx: TQM85xx - fix sensitivity of CAN interruptsWolfgang Grandegger2009-02-023-6/+6
| | | | | | | | | | | | | | | Signed-off-by: Wolfgang Grandegger <wg@grandegger.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc/83xx: Add gpio to MPC837x RDBReynes Philippe2009-02-023-0/+54
| | | | | | | | | | | | | | | Signed-off-by: Philippe Reynes <philippe.reynes@isismpp.fr> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc/86xx: Extend GE Fanuc GPIO driver for the SBC310Martyn Welch2009-01-282-7/+33
| | | | | | | | | | | | | | | | | | | | | This patch adds basic support for the 6 GPIO lines found on GE Fanucs SBC310 to the GE Fanuc GPIO driver. Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc/86xx: Default configutation for GE Fanuc's SBC310Martyn Welch2009-01-281-0/+1613
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Support for the SBC310 VPX Single Board Computer from GE Fanuc (PowerPC MPC8641D). This is the default config file for GE Fanuc's SBC310, a 3U single board computer, based on Freescale's MPC8641D. Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc/86xx: Board support for GE Fanuc SBC310Martyn Welch2009-01-285-2/+605
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Support for the SBC310 VPX Single Board Computer from GE Fanuc (PowerPC MPC8641D). This is the basic board support for GE Fanuc's SBC310, a 3U single board computer, based on Freescale's MPC8641D. Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc/fsl: Ensure PCI_QUIRKS are enabled for FSL_PCIKumar Gala2009-01-281-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | The FSL PCI code depends on PCI quirks being enabled to function properly. We can ensure this by doing a select in Kconfig of PCI_QUIRKS. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc/83xx: Add i2c eeprom to dts for MPC837x RDBReynes Philippe2009-01-283-0/+18
| | | | | | | | | | | | | | | Signed-off-by: Philippe Reynes <philippe.reynes@isismpp.fr> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc: convert dts-bindings/fsl/dma.txt to dts-v1 syntaxPeter Korsgaard2009-01-281-17/+17
| | | | | | | | | | | | | | | Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | cpm2: Round the baud-rate clock divider to the nearest integer.Laurent Pinchart2009-01-281-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | Instead of rounding the divider down, improve the baud-rate generators accuracy by rounding to the nearest integer. Signed-off-by: Laurent Pinchart <laurentp@cse-semaphore.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc/fsl-booke: Make CAM entries used for lowmem configurableTrent Piepho2009-01-282-1/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On booke processors, the code that maps low memory only uses up to three CAM entries, even though there are sixteen and nothing else uses them. Make this number configurable in the advanced options menu along with max low memory size. If one wants 1 GB of lowmem, then it's typically necessary to have four CAM entries. Signed-off-by: Trent Piepho <tpiepho@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc/fsl-booke: Allow larger CAM sizes than 256 MBTrent Piepho2009-01-282-2/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The code that maps kernel low memory would only use page sizes up to 256 MB. On E500v2 pages up to 4 GB are supported. However, a page must be aligned to a multiple of the page's size. I.e. 256 MB pages must aligned to a 256 MB boundary. This was enforced by a requirement that the physical and virtual addresses of the start of lowmem be aligned to 256 MB. Clearly requiring 1GB or 4GB alignment to allow pages of that size isn't acceptable. To solve this, I simply have adjust_total_lowmem() take alignment into account when it decides what size pages to use. Give it PAGE_OFFSET = 0x7000_0000, PHYSICAL_START = 0x3000_0000, and 2GB of RAM, and it will map pages like this: PA 0x3000_0000 VA 0x7000_0000 Size 256 MB PA 0x4000_0000 VA 0x8000_0000 Size 1 GB PA 0x8000_0000 VA 0xC000_0000 Size 256 MB PA 0x9000_0000 VA 0xD000_0000 Size 256 MB PA 0xA000_0000 VA 0xE000_0000 Size 256 MB Because the lowmem mapping code now takes alignment into account, PHYSICAL_ALIGN can be lowered from 256 MB to 64 MB. Even lower might be possible. The lowmem code will work down to 4 kB but it's possible some of the boot code will fail before then. Poor alignment will force small pages to be used, which combined with the limited number of TLB1 pages available, will result in very little memory getting mapped. So alignments less than 64 MB probably aren't very useful anyway. Signed-off-by: Trent Piepho <tpiepho@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc/fsl-booke: Remove code duplication in lowmem mappingTrent Piepho2009-01-281-48/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The code to map lowmem uses three CAM aka TLB[1] entries to cover it. The size of each is stored in three globals named __cam0, __cam1, and __cam2. All the code that uses them is duplicated three times for each of the three variables. We have these things called arrays and loops.... Once converted to use an array, it will be easier to make the number of CAMs configurable. Signed-off-by: Trent Piepho <tpiepho@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc/fsl-booke: Cleanup init/exception setup to be runtimeKumar Gala2009-01-286-30/+98
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We currently have a few variants of fsl-booke processors (e500v1, e500v2, e500mc, and e200). They all have minor differences that we had previously been handling via ifdefs. To move towards having this support the following changes have been made: * PID1, PID2 only exist on e500v1 & e500v2 and should not be accessed on e500mc or e200. We use MMUCFG[NPIDS] to determine which case we are since we only touch PID1/2 in extremely early init code. * Not all IVORs exist on all the processors so introduce cpu_setup functions for each variant to setup the proper IVORs that are either unique or exist but have some variations between the processors Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc/83xx: Add PCI-E support for all MPC83xx boards with PCI-EAnton Vorontsov2009-01-288-7/+327
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds pcie nodes to the appropriate dts files, plus adds some probing code for the boards. Also, remove of_device_is_avaliable() check from the mpc837x_mds.c board file, as mpc83xx_add_bridge() has the same check now. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc/fsl_pci: Add MPC83xx PCI-E controller RC mode supportAnton Vorontsov2009-01-282-24/+228
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for PCI-Express controllers as found on the newer MPC83xx chips. The work is loosely based on the Tony Li's patch[1], but unlike the original patch, this patch implements sliding window for the Type 1 transactions using outbound window translations, so we don't have to ioremap the whole PCI-E configuration space. [1] http://ozlabs.org/pipermail/linuxppc-dev/2008-January/049028.html Signed-off-by: Tony Li <tony.li@freescale.com> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* | | hugetlbfs: fix build failure with !CONFIG_HUGETLBFSStefan Richter2009-02-101-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix regression due to 5a6fe125950676015f5108fb71b2a67441755003, "Do not account for the address space used by hugetlbfs using VM_ACCOUNT" which added an argument to the function hugetlb_file_setup() but not to the macro hugetlb_file_setup(). Reported-by: Chris Clayton <chris2553@googlemail.com> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Acked-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge branch 'merge' of ↵Linus Torvalds2009-02-1012-19/+34
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc: Add missing sparsemem.h include powerpc/pci: mmap anonymous memory when legacy_mem doesn't exist powerpc/cell: Add missing #include for oprofile powerpc/ftrace: Fix math to calculate offset in TOC powerpc: Don't emulate mr. instructions powerpc/fsl-booke: Fix mapping functions to use phys_addr_t arch/powerpc: Eliminate double sizeof powerpc/cpm2: Fix set interrupt type powerpc/83xx: Fix TSEC0 workability on MPC8313E-RDB boards powerpc/83xx: Fix missing #{address,size}-cells in mpc8313erdb.dts powerpc/83xx: Build breakage for CONFIG_PM but no CONFIG_SUSPEND
| * | | powerpc: Add missing sparsemem.h includeMichael Neuling2009-02-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch/powerpc/platforms/pseries/hotplug-memory.c uses remove_section_mapping() but doesn't include sparsemem.h which defines it. This can cause compilation fails for some configs. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | powerpc/pci: mmap anonymous memory when legacy_mem doesn't existBenjamin Herrenschmidt2009-02-101-2/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The new legacy_mem file in sysfs is causing problems with X on machines that don't support legacy memory access. The way I initially implemented it, we would fail with -ENXIO when trying to mmap it, thus exposing to X that we do support the API but there is no legacy memory. Unfortunately, X poor error handling is causing it to fail to start when it gets this error. This implements a workaround hack that instead maps anonymous memory instead (using shmem if VM_SHARED is set, just like /dev/zero does). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | powerpc/cell: Add missing #include for oprofileMichael Neuling2009-02-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch/powerpc/oprofile/cell/spu_profiler.c is missing a asm/time.h include which is required for ppc_proc_freq. This can cause compile failures for some config combinations. Signed-off-by: Michael Neuling <mikey@neuling.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | powerpc/ftrace: Fix math to calculate offset in TOCSteven Rostedt2009-02-101-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix dynamic ftrace with large modules in PPC64 The math to calculate the offset into the TOC that is taken from reading the trampoline is incorrect. The bottom half of the offset is a signed extended short. The current code was using an OR to create the offset when it should have been using an addition. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Acked-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | powerpc: Don't emulate mr. instructionsAnanth N Mavinakayanahalli2009-02-101-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently emulate_step() emulates mr. instructions without updating cr0 and this can be disastrous. Don't emulate mr. This bug has been around for a while, but I am not sure if its a worthy -stable candidate. I'll leave it to Ben do decide. Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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