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* Merge tag 'devicetree-for-3.13' of ↵Linus Torvalds2013-11-1214-17/+29
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree updates from Rob Herring: "DeviceTree updates for 3.13. This is a bit larger pull request than usual for this cycle with lots of clean-up. - Cross arch clean-up and consolidation of early DT scanning code. - Clean-up and removal of arch prom.h headers. Makes arch specific prom.h optional on all but Sparc. - Addition of interrupts-extended property for devices connected to multiple interrupt controllers. - Refactoring of DT interrupt parsing code in preparation for deferred probe of interrupts. - ARM cpu and cpu topology bindings documentation. - Various DT vendor binding documentation updates" * tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (82 commits) powerpc: add missing explicit OF includes for ppc dt/irq: add empty of_irq_count for !OF_IRQ dt: disable self-tests for !OF_IRQ of: irq: Fix interrupt-map entry matching MIPS: Netlogic: replace early_init_devtree() call of: Add Panasonic Corporation vendor prefix of: Add Chunghwa Picture Tubes Ltd. vendor prefix of: Add AU Optronics Corporation vendor prefix of/irq: Fix potential buffer overflow of/irq: Fix bug in interrupt parsing refactor. of: set dma_mask to point to coherent_dma_mask of: add vendor prefix for PHYTEC Messtechnik GmbH DT: sort vendor-prefixes.txt of: Add vendor prefix for Cadence of: Add empty for_each_available_child_of_node() macro definition arm/versatile: Fix versatile irq specifications. of/irq: create interrupts-extended property microblaze/pci: Drop PowerPC-ism from irq parsing of/irq: Create of_irq_parse_and_map_pci() to consolidate arch code. of/irq: Use irq_of_parse_and_map() ...
| * powerpc: add missing explicit OF includes for ppcRob Herring2013-11-113-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit b5b4bb3f6a11f9 (of: only include prom.h on sparc) removed implicit includes of of_*.h headers by powerpc's prom.h. Some components were missed in initial clean-up patch, so add the necessary includes to fix powerpc builds. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Tejun Heo <tj@kernel.org> Cc: Matt Mackall <mpm@selenic.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "David S. Miller" <davem@davemloft.net> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-ide@vger.kernel.org Cc: linux-crypto@vger.kernel.org
| * Merge remote-tracking branch 'grant/devicetree/next' into for-nextRob Herring2013-11-073-13/+10
| |\
| | * of/irq: Use irq_of_parse_and_map()Thierry Reding2013-10-242-9/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace some instances of of_irq_map_one()/irq_create_of_mapping() and of_irq_to_resource() by the simpler equivalent irq_of_parse_and_map(). Signed-off-by: Thierry Reding <treding@nvidia.com> Acked-by: Rob Herring <rob.herring@calxeda.com> [grant.likely: resolved conflicts with core code renames] Signed-off-by: Grant Likely <grant.likely@linaro.org>
| | * of/irq: Replace of_irq with of_phandle_argsGrant Likely2013-10-241-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | struct of_irq and struct of_phandle_args are exactly the same structure. This patch makes the kernel use of_phandle_args everywhere. This in itself isn't a big deal, but it makes some follow-on patches simpler. Signed-off-by: Grant Likely <grant.likely@linaro.org> Acked-by: Michal Simek <monstr@monstr.eu> Acked-by: Tony Lindgren <tony@atomide.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| | * of/irq: Rename of_irq_map_* functions to of_irq_parse_*Grant Likely2013-10-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The OF irq handling code has been overloading the term 'map' to refer to both parsing the data in the device tree and mapping it to the internal linux irq system. This is probably because the device tree does have the concept of an 'interrupt-map' function for translating interrupt references from one node to another, but 'map' is still confusing when the primary purpose of some of the functions are to parse the DT data. This patch renames all the of_irq_map_* functions to of_irq_parse_* which makes it clear that there is a difference between the parsing phase and the mapping phase. Kernel code can make use of just the parsing or just the mapping support as needed by the subsystem. The patch was generated mechanically with a handful of sed commands. Signed-off-by: Grant Likely <grant.likely@linaro.org> Acked-by: Michal Simek <monstr@monstr.eu> Acked-by: Tony Lindgren <tony@atomide.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | powerpc: add explicit OF includesRob Herring2013-10-0910-4/+16
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | When removing prom.h include by of.h, several OF headers will no longer be implicitly included. Add explicit includes of of_*.h as needed. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Grant Likely <grant.likely@linaro.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: Olof Johansson <olof@lixom.net> Cc: linuxppc-dev@lists.ozlabs.org
* | powerpc/scom: Improve debugfs interfaceBenjamin Herrenschmidt2013-11-061-55/+81
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current debugfs interface to scom is essentially unused and racy. It uses two different files "address" and "data" to perform accesses which is at best impractical for anything but manual use by a developer. This replaces it with an "access" file which represent the entire scom address space which can be lseek/read/writen too. This file only supports accesses that are 8 bytes aligned and multiple of 8 bytes in size. The offset is logically the SCOM address multiplied by 8. Since nothing in userspace exploits that file at the moment, the ABI change is a no-brainer. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | powerpc/mpc512x: remove unnecessary #ifBrian Norris2013-10-301-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Several functions are only ever referenced locally, so make them static. Of those functions, many of them are protected by an #if. However, the code which can compile fine in either case. Now that (1) the unneeded code is marked 'static' and (2) the code is only used under a C 'if (IS_ENABLED(CONFIG_FB_FSL_DIU))', the compiler can automatically remove the unneeded code, and we don't need the #if or the empty stub functions. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Anatolij Gustschin <agust@denx.de>
* | powerpc/mv643xx_eth: fix return check in mv64x60_eth_register_shared_pdev()Wei Yongjun2013-10-281-1/+1
| | | | | | | | | | | | | | | | | | In case of error, the function platform_device_register_simple() returns RR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Scott Wood <scottwood@freescale.com>
* | powerpc/pci: Change the DECLARE_PCI_FIXUP_{HEADER => EARLY} macro of pci quirkChunhe Lan2013-10-281-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Freescale platform has class code = 0x0b2000, when it boots. This makes kernel PCI bus code to setup these devices resulting into the following notice information when trying to enable them: pci 0000:00:00.0: ignoring class 0x0b2000 (doesn't match header type 01) The above information is outputted by judging value of dev->class before pci_setup_device() function, and the DECLARE_PCI_FIXUP_HEADER quirk runs after pci_setup_device() function. But the DECLARE_PCI_FIXUP_EARLY quirk runs before judging value of dev->class and pci_setup_device() function. So we use the DECLARE_PCI_FIXUP_EARLY macro to fix this issue. Signed-off-by: Chunhe Lan <Chunhe.Lan@freescale.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Scott Wood <scottwood@freescale.com>
* | powerpc/scom: Use "devspec" rather than "path" in debugfs entriesBenjamin Herrenschmidt2013-10-111-1/+1
| | | | | | | | | | | | | | This is the traditional name for device-tree path, used in sysfs, do the same for the XSCOM debugfs files. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | powerpc/scom: CONFIG_SCOM_DEBUGFS should depend on CONFIG_DEBUG_FSBenjamin Herrenschmidt2013-10-111-1/+1
| | | | | | | | Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | powerpc/scom: Create debugfs files using ibm,chip-id if availableBenjamin Herrenschmidt2013-10-111-2/+7
| | | | | | | | | | | | | | When creating the debugfs scom files, use "ibm,chip-id" as the scom%d index rather than a simple made up number when possible. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | powerpc/scom: Add support for "reg" propertyBenjamin Herrenschmidt2013-10-111-5/+17
| | | | | | | | | | | | | | | | | | | | When devices are direct children of a scom controller node, they should be able to use the normal "reg" property instead of "scom-reg". In that case, they also use #address-cells rather than #scom-cells to indicate the size of an entry. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | powerpc/scom: Change scom_read() and scom_write() to return errorsBenjamin Herrenschmidt2013-10-111-2/+1
| | | | | | | | | | | | | | scom_read() now returns the read value via a pointer argument and both functions return an int error code Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | powerpc/mpic: Disable preemption when calling mpic_processor_id()Scott Wood2013-10-111-1/+7
| | | | | | | | | | | | | | | | | | | | Otherwise, we get a debug traceback due to the use of smp_processor_id() (or get_paca()) inside hard_smp_processor_id(). mpic_host_map() is just looking for a default CPU, so it doesn't matter if we migrate after getting the CPU ID. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | powerpc/powernv: Fix endian issues in OPAL ICS backendBenjamin Herrenschmidt2013-10-111-8/+9
|/ | | | Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* Merge tag 'iommu-updates-v3.12' of ↵Linus Torvalds2013-09-121-0/+5
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU Updates from Joerg Roedel: "This round the updates contain: - A new driver for the Freescale PAMU IOMMU from Varun Sethi. This driver has cooked for a while and required changes to the IOMMU-API and infrastructure that were already merged before. - Updates for the ARM-SMMU driver from Will Deacon - Various fixes, the most important one is probably a fix from Alex Williamson for a memory leak in the VT-d page-table freeing code In summary not all that much. The biggest part in the diffstat is the new PAMU driver" * tag 'iommu-updates-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: intel-iommu: Fix leaks in pagetable freeing iommu/amd: Fix resource leak in iommu_init_device() iommu/amd: Clean up unnecessary MSI/MSI-X capability find iommu/arm-smmu: Simplify VMID and ASID allocation iommu/arm-smmu: Don't use VMIDs for stage-1 translations iommu/arm-smmu: Tighten up global fault reporting iommu/arm-smmu: Remove broken big-endian check iommu/fsl: Remove unnecessary 'fsl-pamu' prefixes iommu/fsl: Fix whitespace problems noticed by git-am iommu/fsl: Freescale PAMU driver and iommu implementation. iommu/fsl: Add additional iommu attributes required by the PAMU driver. powerpc: Add iommu domain pointer to device archdata iommu/exynos: Remove dead code (set_prefbuf)
| * iommu/fsl: Freescale PAMU driver and iommu implementation.Varun Sethi2013-08-141-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Following is a brief description of the PAMU hardware: PAMU determines what action to take and whether to authorize the action on the basis of the memory address, a Logical IO Device Number (LIODN), and PAACT table (logically) indexed by LIODN and address. Hardware devices which need to access memory must provide an LIODN in addition to the memory address. Peripheral Access Authorization and Control Tables (PAACTs) are the primary data structures used by PAMU. A PAACT is a table of peripheral access authorization and control entries (PAACE).Each PAACE defines the range of I/O bus address space that is accessible by the LIOD and the associated access capabilities. There are two types of PAACTs: primary PAACT (PPAACT) and secondary PAACT (SPAACT).A given physical I/O device may be able to act as one or more independent logical I/O devices (LIODs). Each such logical I/O device is assigned an identifier called logical I/O device number (LIODN). A LIODN is allocated a contiguous portion of the I/O bus address space called the DSA window for performing DSA operations. The DSA window may optionally be divided into multiple sub-windows, each of which may be used to map to a region in system storage space. The first sub-window is referred to as the primary sub-window and the remaining are called secondary sub-windows. This patch provides the PAMU driver (fsl_pamu.c) and the corresponding IOMMU API implementation (fsl_pamu_domain.c). The PAMU hardware driver (fsl_pamu.c) has been derived from the work done by Ashish Kalra and Timur Tabi. [For iommu group support] Acked-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Timur Tabi <timur@tabi.org> Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
* | Merge branch 'next' of ↵Linus Torvalds2013-09-066-71/+278
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc Pull powerpc updates from Ben Herrenschmidt: "Here's the powerpc batch for this merge window. Some of the highlights are: - A bunch of endian fixes ! We don't have full LE support yet in that release but this contains a lot of fixes all over arch/powerpc to use the proper accessors, call the firmware with the right endian mode, etc... - A few updates to our "powernv" platform (non-virtualized, the one to run KVM on), among other, support for bridging the P8 LPC bus for UARTs, support and some EEH fixes. - Some mpc51xx clock API cleanups in preparation for a clock API overhaul - A pile of cleanups of our old math emulation code, including better support for using it to emulate optional FP instructions on embedded chips that otherwise have a HW FPU. - Some infrastructure in selftest, for powerpc now, but could be generalized, initially used by some tests for our perf instruction counting code. - A pile of fixes for hotplug on pseries (that was seriously bitrotting) - The usual slew of freescale embedded updates, new boards, 64-bit hiberation support, e6500 core PMU support, etc..." * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (146 commits) powerpc: Correct FSCR bit definitions powerpc/xmon: Fix printing of set of CPUs in xmon powerpc/pseries: Move lparcfg.c to platforms/pseries powerpc/powernv: Return secondary CPUs to firmware on kexec powerpc/btext: Fix CONFIG_PPC_EARLY_DEBUG_BOOTX on ppc32 powerpc: Cleanup handling of the DSCR bit in the FSCR register powerpc/pseries: Child nodes are not detached by dlpar_detach_node powerpc/pseries: Add mising of_node_put in delete_dt_node powerpc/pseries: Make dlpar_configure_connector parent node aware powerpc/pseries: Do all node initialization in dlpar_parse_cc_node powerpc/pseries: Fix parsing of initial node path in update_dt_node powerpc/pseries: Pack update_props_workarea to map correctly to rtas buffer header powerpc/pseries: Fix over writing of rtas return code in update_dt_node powerpc/pseries: Fix creation of loop in device node property list powerpc: Skip emulating & leave interrupts off for kernel program checks powerpc: Add more exception trampolines for hypervisor exceptions powerpc: Fix location and rename exception trampolines powerpc: Add more trap names to xmon powerpc/pseries: Add a warning in the case of cross-cpu VPA registration powerpc: Update the 00-Index in Documentation/powerpc ...
| * | powerpc: Fix some endian issues in xics codeAnton Blanchard2013-08-141-5/+5
| | | | | | | | | | | | | | | Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | powerpc: Add some endian annotations to time and xics codeAnton Blanchard2013-08-141-1/+1
| | | | | | | | | | | | | | | | | | | | | Fix a couple of sparse warnings. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | powerpc/pci: fix PCI-e check link issueYuanquan Chen2013-08-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For Freescale powerpc platform, the PCI-e bus number uses the reassign mode by default. It means the second PCI-e controller's hose->first_busno is the first controller's last bus number adding 1. For some hotpluged device(or controlled by FPGA), the device is linked to PCI-e slot at linux runtime. It needs rescan for the system to add it and driver it to work. It successes to rescan the device linked to the first PCI-e controller's slot, but fails to rescan the device linked to the second PCI-e controller's slot. The cause is that the bus->number is reset to 0, which isn't equal to the hose->first_busno for the second controller checking PCI-e link. So it doesn't really check the PCI-e link status, the link status is always no_link. The device won't be really rescaned. Reset the bus->number to hose->first_busno in the function fsl_pcie_check_link(), it will do the real checking PCI-e link status for the second controller, the device will be rescaned. Signed-off-by: Yuanquan Chen <Yuanquan.Chen@freescale.com> Tested-by: Rojhalat Ibrahim <imr@rtschenk.de> Signed-off-by: Scott Wood <scottwood@freescale.com>
| * | powerpc/fsl-pci: enable SWIOTLB in function setup_pci_atmuKevin Hao2013-08-071-19/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | This function contains all the stuff we need to check if SWIOTLB should be enabled or not. So it is more convenient to enable the SWIOTLB here than later. Signed-off-by: Kevin Hao <haokexin@gmail.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
| * | powerpc/fsl-pci: fix the unreachable warning messageKevin Hao2013-08-071-1/+1
| | | | | | | | | | | | | | | | | | | | | The (1ull << mem_log) is never greater than mem unless mem_log++; Signed-off-by: Kevin Hao <haokexin@gmail.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
| * | powerpc/fsl_msi: add MSIIR1 support for MPIC v4.3Minghuan Lian2013-08-072-41/+101
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The original MPIC MSI bank contains 8 registers, MPIC v4.3 MSI bank contains 16 registers, and this patch adds NR_MSI_REG_MAX and NR_MSI_IRQS_MAX to describe the maximum capability of MSI bank. MPIC v4.3 provides MSIIR1 to index these 16 MSI registers. MSIIR1 uses different bits definition than MSIIR. This patch adds ibs_shift and srs_shift to indicate the bits definition of the MSIIR and MSIIR1, so the same code can handle the MSIIR and MSIIR1 simultaneously. Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com> [scottwood@freescale.com: reinstated static on all_avail] Signed-off-by: Scott Wood <scottwood@freescale.com>
| * | powerpc/fsl_msi: fix error return code in fsl_of_msi_probe()Wei Yongjun2013-07-301-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | Fix to return a negative error code in the MSI bitmap alloc error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Scott Wood <scottwood@freescale.com>
| * | powerpc/85xx: Add machine check handler to fix PCIe erratum on mpc85xxHongtao Jia2013-07-302-0/+164
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A PCIe erratum of mpc85xx may causes a core hang when a link of PCIe goes down. when the link goes down, Non-posted transactions issued via the ATMU requiring completion result in an instruction stall. At the same time a machine-check exception is generated to the core to allow further processing by the handler. We implements the handler which skips the instruction caused the stall. This patch depends on patch: powerpc/85xx: Add platform_device declaration to fsl_pci.h Signed-off-by: Zhao Chenhui <b35336@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Liu Shuo <soniccat.liu@gmail.com> Signed-off-by: Jia Hongtao <hongtao.jia@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
* | PTR_RET is now PTR_ERR_OR_ZERO(): Replace most.Rusty Russell2013-07-151-1/+1
|/ | | | | | | | | | | | Sweep of the simple cases. Cc: netdev@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-arm-kernel@lists.infradead.org Cc: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* Merge remote-tracking branch 'scott/next' into nextBenjamin Herrenschmidt2013-07-024-7/+807
|\ | | | | | | Merge Freescale updates
| * powerpc/fsl: add MPIC timer wakeup supportDongsheng.wang@freescale.com2013-07-012-0/+162
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The driver provides a way to wake up the system by the MPIC timer. For example, echo 5 > /sys/devices/system/mpic/timer_wakeup echo standby > /sys/power/state After 5 seconds the MPIC timer will generate an interrupt to wake up the system. Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com> Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com>
| * powerpc/mpic: create mpic subsystem objectDongsheng.wang@freescale.com2013-07-011-0/+8
| | | | | | | | | | | | | | Register a mpic subsystem at /sys/devices/system/ Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
| * powerpc/mpic: add global timer supportDongsheng.wang@freescale.com2013-07-012-0/+594
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The MPIC global timer is a hardware timer inside the Freescale PIC complying with OpenPIC standard. When the specified interval times out, the hardware timer generates an interrupt. The driver currently is only tested on fsl chip, but it can potentially support other global timers complying to OpenPIC standard. The two independent groups of global timer on fsl chip, group A and group B, are identical in their functionality, except that they appear at different locations within the PIC register map. The hardware timer can be cascaded to create timers larger than the default 31-bit global timers. Timer cascade fields allow configuration of up to two 63-bit timers. But These two groups of timers cannot be cascaded together. It can be used as a wakeup source for low power modes. It also could be used as periodical timer for protocols, drivers and etc. Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
| * powerpc/mpic: add irq_set_wake supportDongsheng.wang@freescale.com2013-07-011-0/+18
| | | | | | | | | | | | | | | | Add irq_set_wake support. Just add IRQF_NO_SUSPEND to desc->action->flag. So the wake up interrupt will not be disable in suspend_device_irqs. Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
| * powerpc/mpic: Add get_version API both for internal and external useHongtao Jia2013-07-011-7/+25
| | | | | | | | | | | | | | | | | | | | | | MPIC version is useful information for both mpic_alloc() and mpic_init(). The patch provide an API to get MPIC version for reusing the code. Also, some other IP block may need MPIC version for their own use. The API for external use is also provided. Signed-off-by: Jia Hongtao <hongtao.jia@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
* | Merge tag 'v3.10' into nextBenjamin Herrenschmidt2013-07-011-15/+9
|\ \ | |/ |/| | | | | | | Merge 3.10 in order to get some of the last minute powerpc changes, resolve conflicts and add additional fixes on top of them.
| * powerpc/pci: Fix boot panic on mpc83xx (regression)Rojhalat Ibrahim2013-06-241-15/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following commit caused a fatal oops when booting on mpc83xx with a non-express PCI bus (regardless of whether a PCI device is present): commit 50d8f87d2b39313dae9d0a2d9b23d377328f2f7b Author: Rojhalat Ibrahim <imr@rtschenk.de> Date: Mon Apr 8 10:15:28 2013 +0200 powerpc/fsl-pci Make PCIe hotplug work with Freescale PCIe controllers Up to now the PCIe link status on Freescale PCIe controllers was only checked once at boot time. So hotplug did not work. With this patch the link status is checked on every config read. PCIe devices not present at boot time are found after doing 'echo 1 >/sys/bus/pci/rescan'. Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> This patch fixes the issue by calling setup_indirect_pci for all device types. fsl_indirect_read_config is now only used for booke/86xx PCIe controllers. Reported-by: Michael Guntsche <mike@it-loops.com> Cc: Scott Wood <scottwood@freescale.com> Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de> Signed-off-by: Scott Wood <scottwood@freescale.com>
* | powerpc: Mark low level irq handlers NO_THREADThomas Gleixner2013-06-201-0/+1
|/ | | | | | | | | These low level handlers cannot be threaded. Mark them NO_THREAD Reported-by: leroy christophe <christophe.leroy@c-s.fr> Tested-by: leroy christophe <christophe.leroy@c-s.fr> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/mpic: Fix irq distribution problem when MPIC_SINGLE_DEST_CPUchenhui zhao2013-06-011-2/+2
| | | | | | | | | | For the mpic with a flag MPIC_SINGLE_DEST_CPU, only one bit should be set in interrupt destination registers. The code is applicable to 64-bit platforms as well as 32-bit. Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Fix irq_set_affinity() return valuesAlexander Gordeev2013-05-143-3/+3
| | | | | Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Add an in memory udbg consoleAlistair Popple2013-05-082-0/+107
| | | | | | | | | | | | | | | | | This patch adds a new udbg early debug console which utilises statically defined input and output buffers stored within the kernel BSS. It is primarily designed to assist with bring up of new hardware which may not have a working console but which has a method of reading/writing kernel memory. This version incorporates comments made by Ben H (thanks!). Changes from v1: - Add memory barriers. - Ensure updating of read/write positions is atomic. Signed-off-by: Alistair Popple <alistair@popple.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/pci: Support per-aperture memory offsetBenjamin Herrenschmidt2013-05-062-11/+15
| | | | | | | | | | | | | | | | | The PCI core supports an offset per aperture nowadays but our arch code still has a single offset per host bridge representing the difference betwen CPU memory addresses and PCI MMIO addresses. This is a problem as new machines and hypervisor versions are coming out where the 64-bit windows will have a different offset (basically mapped 1:1) from the 32-bit windows. This fixes it by using separate offsets. In the long run, we probably want to get rid of that intermediary struct pci_controller and have those directly stored into the pci_host_bridge as they are parsed but this will be a more invasive change. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* irqdomain: Allow quiet failure modeBenjamin Herrenschmidt2013-05-061-3/+11
| | | | | | | | | | | | | | | | Some interrupt controllers refuse to map interrupts marked as "protected" by firwmare. Since we try to map everyting in the device-tree on some platforms, we end up with a lot of nasty WARN's in the boot log for what is a normal situation on those machines. This defines a specific return code (-EPERM) from the host map() callback which cause irqdomain to fail silently. MPIC is updated to return this when hitting a protected source printing only a single line message for diagnostic purposes. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* Merge tag 'kvm-3.10-1' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2013-05-051-0/+8
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull kvm updates from Gleb Natapov: "Highlights of the updates are: general: - new emulated device API - legacy device assignment is now optional - irqfd interface is more generic and can be shared between arches x86: - VMCS shadow support and other nested VMX improvements - APIC virtualization and Posted Interrupt hardware support - Optimize mmio spte zapping ppc: - BookE: in-kernel MPIC emulation with irqfd support - Book3S: in-kernel XICS emulation (incomplete) - Book3S: HV: migration fixes - BookE: more debug support preparation - BookE: e6500 support ARM: - reworking of Hyp idmaps s390: - ioeventfd for virtio-ccw And many other bug fixes, cleanups and improvements" * tag 'kvm-3.10-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (204 commits) kvm: Add compat_ioctl for device control API KVM: x86: Account for failing enable_irq_window for NMI window request KVM: PPC: Book3S: Add API for in-kernel XICS emulation kvm/ppc/mpic: fix missing unlock in set_base_addr() kvm/ppc: Hold srcu lock when calling kvm_io_bus_read/write kvm/ppc/mpic: remove users kvm/ppc/mpic: fix mmio region lists when multiple guests used kvm/ppc/mpic: remove default routes from documentation kvm: KVM_CAP_IOMMU only available with device assignment ARM: KVM: iterate over all CPUs for CPU compatibility check KVM: ARM: Fix spelling in error message ARM: KVM: define KVM_ARM_MAX_VCPUS unconditionally KVM: ARM: Fix API documentation for ONE_REG encoding ARM: KVM: promote vfp_host pointer to generic host cpu context ARM: KVM: add architecture specific hook for capabilities ARM: KVM: perform HYP initilization for hotplugged CPUs ARM: KVM: switch to a dual-step HYP init code ARM: KVM: rework HYP page table freeing ARM: KVM: enforce maximum size for identity mapped code ARM: KVM: move to a KVM provided HYP idmap ...
| * KVM: PPC: Book3S HV: Speed up wakeups of CPUs on HV KVMBenjamin Herrenschmidt2013-04-261-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, we wake up a CPU by sending a host IPI with smp_send_reschedule() to thread 0 of that core, which will take all threads out of the guest, and cause them to re-evaluate their interrupt status on the way back in. This adds a mechanism to differentiate real host IPIs from IPIs sent by KVM for guest threads to poke each other, in order to target the guest threads precisely when possible and avoid that global switch of the core to host state. We then use this new facility in the in-kernel XICS code. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
* | Merge branch 'next' of ↵Linus Torvalds2013-05-028-46/+105
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc Pull powerpc update from Benjamin Herrenschmidt: "The main highlights this time around are: - A pile of addition POWER8 bits and nits, such as updated performance counter support (Michael Ellerman), new branch history buffer support (Anshuman Khandual), base support for the new PCI host bridge when not using the hypervisor (Gavin Shan) and other random related bits and fixes from various contributors. - Some rework of our page table format by Aneesh Kumar which fixes a thing or two and paves the way for THP support. THP itself will not make it this time around however. - More Freescale updates, including Altivec support on the new e6500 cores, new PCI controller support, and a pile of new boards support and updates. - The usual batch of trivial cleanups & fixes" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (156 commits) powerpc: Fix build error for book3e powerpc: Context switch the new EBB SPRs powerpc: Turn on the EBB H/FSCR bits powerpc: Replace CPU_FTR_BCTAR with CPU_FTR_ARCH_207S powerpc: Setup BHRB instructions facility in HFSCR for POWER8 powerpc: Fix interrupt range check on debug exception powerpc: Update tlbie/tlbiel as per ISA doc powerpc: Print page size info during boot powerpc: print both base and actual page size on hash failure powerpc: Fix hpte_decode to use the correct decoding for page sizes powerpc: Decode the pte-lp-encoding bits correctly. powerpc: Use encode avpn where we need only avpn values powerpc: Reduce PTE table memory wastage powerpc: Move the pte free routines from common header powerpc: Reduce the PTE_INDEX_SIZE powerpc: Switch 16GB and 16MB explicit hugepages to a different page table format powerpc: New hugepage directory format powerpc: Don't truncate pgd_index wrongly powerpc: Don't hard code the size of pte page powerpc: Save DAR and DSISR in pt_regs on MCE ...
| * | powerpc: Fix usage of setup_pci_atmu()Michael Neuling2013-04-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Linux next is currently failing to compile mpc85xx_defconfig with: arch/powerpc/sysdev/fsl_pci.c:944:2: error: too many arguments to function 'setup_pci_atmu' This is caused by (from Kumar's next branch): commit 34642bbb3d12121333efcf4ea7dfe66685e403a1 Author: Kumar Gala <galak@kernel.crashing.org> powerpc/fsl-pci: Keep PCI SoC controller registers in pci_controller Which changed definition of setup_pci_atmu() but didn't update one of the callers. Below fixes this. Signed-off-by: Michael Neuling <mikey@neuling.org> Reviewed-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | Merge remote-tracking branch 'kumar/next' into nextBenjamin Herrenschmidt2013-04-305-40/+101
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | From Kumar Gala: << Add support for T4 and B4 SoC families from Freescale, e6500 altivec support, some various board fixes and other minor cleanups. >>
| | * | powerpc/fsl-pci: don't unmap the PCI SoC controller registers in setup_pci_atmuKevin Hao2013-04-291-5/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In patch 34642bbb (powerpc/fsl-pci: Keep PCI SoC controller registers in pci_controller) we choose to keep the map of the PCI SoC controller registers. But we missed to delete the unmap in setup_pci_atmu function. This will cause the following call trace once we access the PCI SoC controller registers later. Unable to handle kernel paging request for data at address 0x8000080080040f14 Faulting instruction address: 0xc00000000002ea58 Oops: Kernel access of bad area, sig: 11 [#1] SMP NR_CPUS=24 T4240 QDS Modules linked in: NIP: c00000000002ea58 LR: c00000000002eaf4 CTR: c00000000002eac0 REGS: c00000017e10b4a0 TRAP: 0300 Not tainted (3.9.0-rc1-00052-gfa3529f-dirty) MSR: 0000000080029000 <CE,EE,ME> CR: 28adbe22 XER: 00000000 SOFTE: 0 DEAR: 8000080080040f14, ESR: 0000000000000000 TASK = c00000017e100000[1] 'swapper/0' THREAD: c00000017e108000 CPU: 2 GPR00: 0000000000000000 c00000017e10b720 c0000000009928d8 c00000017e578e00 GPR04: 0000000000000000 000000000000000c 0000000000000001 c00000017e10bb40 GPR08: 0000000000000000 8000080080040000 0000000000000000 0000000000000016 GPR12: 0000000088adbe22 c00000000fffa800 c000000000001ba0 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR20: 0000000000000000 0000000000000000 0000000000000000 c0000000008a5b70 GPR24: c0000000008af938 c0000000009a28d8 c0000000009bb5dc c00000017e10bb40 GPR28: c00000017e32a400 c00000017e10bc00 c00000017e32a400 c00000017e578e00 NIP [c00000000002ea58] .fsl_pcie_check_link+0x88/0xf0 LR [c00000000002eaf4] .fsl_indirect_read_config+0x34/0xb0 Call Trace: [c00000017e10b720] [c00000017e10b7a0] 0xc00000017e10b7a0 (unreliable) [c00000017e10ba30] [c00000000002eaf4] .fsl_indirect_read_config+0x34/0xb0 [c00000017e10bad0] [c00000000033aa08] .pci_bus_read_config_byte+0x88/0xd0 [c00000017e10bb90] [c00000000088d708] .pci_apply_final_quirks+0x9c/0x18c [c00000017e10bc40] [c0000000000013dc] .do_one_initcall+0x5c/0x1f0 [c00000017e10bcf0] [c00000000086ebac] .kernel_init_freeable+0x180/0x26c [c00000017e10bdb0] [c000000000001bbc] .kernel_init+0x1c/0x460 [c00000017e10be30] [c000000000000880] .ret_from_kernel_thread+0x64/0xe4 Instruction dump: 38210310 2b800015 4fdde842 7c600026 5463fffe e8010010 7c0803a6 4e800020 60000000 60000000 e92301d0 7c0004ac <80690f14> 0c030000 4c00012c 38210310 ---[ end trace 7a8fe0cbccb7d992 ]--- Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b Signed-off-by: Kevin Hao <haokexin@gmail.com> Acked-by: Roy Zang <tie-fei.zang@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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