- 30 12月, 2013 1 次提交
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由 Alistair Popple 提交于
The powerpc iommu uses a hardcoded page size of 4K. This patch changes the name of the IOMMU_PAGE_* macros to reflect the hardcoded values. A future patch will use the existing names to support dynamic page sizes. Signed-off-by: NAlistair Popple <alistair@popple.id.au> Signed-off-by: NAlexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 09 12月, 2013 2 次提交
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由 Aneesh Kumar K.V 提交于
Even though we have same value for linux PTE bits and hash PTE pits use the hash pte bits wen updating hash pte Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: NPaul Mackerras <paulus@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Jeremy Kerr 提交于
The only external user of slb_shadow is the pseries lpar code, and it can access through the paca array instead. Signed-off-by: NJeremy Kerr <jk@ozlabs.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 05 12月, 2013 1 次提交
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由 Alexey Kardashevskiy 提交于
The current implementation of IOMMU on sPAPR does not use iommu_ops and therefore does not call IOMMU API's bus_set_iommu() which 1) sets iommu_ops for a bus 2) registers a bus notifier Instead, PCI devices are added to IOMMU groups from subsys_initcall_sync(tce_iommu_init) which does basically the same thing without using iommu_ops callbacks. However Freescale PAMU driver (https://lkml.org/lkml/2013/7/1/158) implements iommu_ops and when tce_iommu_init is called, every PCI device is already added to some group so there is a conflict. This patch does 2 things: 1. removes the loop in which PCI devices were added to groups and adds explicit iommu_add_device() calls to add devices as soon as they get the iommu_table pointer assigned to them. 2. moves a bus notifier to powernv code in order to avoid conflict with the notifier from Freescale driver. iommu_add_device() and iommu_del_device() are public now. Signed-off-by: NAlexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 02 12月, 2013 1 次提交
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由 Michael Ellerman 提交于
Previously PSERIES_MSI depended on PPC_PSERIES via EEH. However in commit 317f06de "powerpc/eeh: Move common part to kernel directory" we made CONFIG_EEH selectable on POWERNV. That leaves us with PSERIES_MSI being live even when PSERIES=n. Fix it by making PSERIES_MSI depend directly on PPC_PSERIES. Signed-off-by: NMichael Ellerman <michael@ellerman.id.au> Reviewed-by: NGavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 21 11月, 2013 3 次提交
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由 Michael Ellerman 提交于
In commit a489043f "Implement arch_get_random_long() based on H_RANDOM" I broke the SMP=n build. We were getting plpar_wrappers.h via spinlock.h which breaks when SMP=n. Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
On little endian builds call H_SET_MODE so exceptions have the correct endianness. We need to reset the endian during kexec so do that in the MMU hashtable clear callback. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 15 11月, 2013 1 次提交
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由 Wolfram Sang 提交于
Use this new function to make code more comprehensible, since we are reinitialzing the completion, not initializing. [akpm@linux-foundation.org: linux-next resyncs] Signed-off-by: NWolfram Sang <wsa@the-dreams.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> (personally at LCE13) Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 31 10月, 2013 2 次提交
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由 Cedric Le Goater 提交于
Signed-off-by: NCedric Le Goater <clg@fr.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Cedric Le Goater 提交于
nvram_scan_partitions() is called twice when initializing the "lnx,oops-log" partition and the "ibm,rtas-log" partition. This fills the partition list with duplicate entries. This patch moves the partition scan in the init routine pseries_nvram_init_log_partitions() which is called only once. Signed-off-by: NCedric Le Goater <clg@fr.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 30 10月, 2013 1 次提交
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由 Anton Blanchard 提交于
Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 24 10月, 2013 3 次提交
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由 Grant Likely 提交于
All the callers of irq_create_of_mapping() pass the contents of a struct of_phandle_args structure to the function. Since all the callers already have an of_phandle_args pointer, why not pass it directly to irq_create_of_mapping()? Signed-off-by: NGrant Likely <grant.likely@linaro.org> Acked-by: NMichal Simek <monstr@monstr.eu> Acked-by: NTony Lindgren <tony@atomide.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Russell King <linux@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Grant Likely 提交于
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: NGrant Likely <grant.likely@linaro.org> Acked-by: NMichal Simek <monstr@monstr.eu> Acked-by: NTony 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>
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由 Grant Likely 提交于
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: NGrant Likely <grant.likely@linaro.org> Acked-by: NMichal Simek <monstr@monstr.eu> Acked-by: NTony Lindgren <tony@atomide.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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- 14 10月, 2013 1 次提交
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由 Michael Opdenacker 提交于
Signed-off-by: NMichael Opdenacker <michael.opdenacker@free-electrons.com> Signed-off-by: NJiri Kosina <jkosina@suse.cz>
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- 11 10月, 2013 1 次提交
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由 Michael Ellerman 提交于
Add support for the arch_get_random_long() hook based on the H_RANDOM hypervisor call. We trust the hypervisor to provide us with random data, ie. we don't whiten it in anyway. Signed-off-by: NMichael Ellerman <michael@ellerman.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 10 10月, 2013 1 次提交
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由 Rob Herring 提交于
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: NRob Herring <rob.herring@calxeda.com> Acked-by: NGrant 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
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- 01 10月, 2013 1 次提交
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由 Toshi Kani 提交于
cpu_hotplug_driver_lock() serializes CPU online/offline operations when ARCH_CPU_PROBE_RELEASE is set. This lock interface is no longer necessary with the following reason: - lock_device_hotplug() now protects CPU online/offline operations, including the probe & release interfaces enabled by ARCH_CPU_PROBE_RELEASE. The use of cpu_hotplug_driver_lock() is redundant. - cpu_hotplug_driver_lock() is only valid when ARCH_CPU_PROBE_RELEASE is defined, which is misleading and is only enabled on powerpc. This patch removes the cpu_hotplug_driver_lock() interface. As a result, ARCH_CPU_PROBE_RELEASE only enables / disables the cpu probe & release interface as intended. There is no functional change in this patch. Signed-off-by: NToshi Kani <toshi.kani@hp.com> Reviewed-by: NNathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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- 25 9月, 2013 1 次提交
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由 Benjamin Herrenschmidt 提交于
Starting secondary CPUs early on from Open Firmware and placing them in a holding spin loop slows down the boot process significantly under some hypervisors such as KVM. This is also unnecessary when RTAS supports querying the CPU state So let's not do it. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 11 9月, 2013 1 次提交
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由 Vaidyanathan Srinivasan 提交于
When adding cpuidle support to pSeries, we introduced two regressions: - The new cpuidle backend driver only works under hypervisors supporting the "SLPLAR" option, which isn't the case of the old POWER4 hypervisor and the HV "light" used on js2x blades - The cpuidle driver registers fairly late, meaning that for a significant portion of the boot process, we end up having all threads spinning. This slows down the boot process and increases the overall resource usage if the hypervisor has shared processors. This fixes both by implementing a "default" idle that will cede to the hypervisor when possible, in a very simple way without all the bells and whisles of cpuidle. Reported-by: NPaul Mackerras <paulus@samba.org> Signed-off-by: NVaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> Acked-by: NDeepthi Dharwar <deepthi@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> CC: <stable@vger.kernel.org>
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- 28 8月, 2013 1 次提交
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由 Benjamin Herrenschmidt 提交于
This file is entirely pseries specific nowadays, so move it out of arch/powerpc/kernel where it doesn't belong anymore. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 27 8月, 2013 11 次提交
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由 Tyrel Datwyler 提交于
Calls to dlpar_detach_node do not iterate over child nodes detaching them as well. By iterating and detaching the child nodes we ensure that they have the OF_DETACHED flag set and that their reference counts are decremented such that the node will be freed from memory by of_node_release. Signed-off-by: NTyrel Datwyler <tyreld@linux.vnet.ibm.com> Acked-by: NNathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Tyrel Datwyler 提交于
The node to be detached is retrieved via its phandle by a call to of_find_node_by_phandle which increments the ref count. We need a matching call to of_node_put to decrement the ref count and ensure the node is actually freed. Signed-off-by: NTyrel Datwyler <tyreld@linux.vnet.ibm.com> Acked-by: NNathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Tyrel Datwyler 提交于
Currently the device nodes created in the device subtree returned by a call to dlpar_configure_connector are all named in the root node. This is because the the node name in the work area returned by ibm,configure-connector rtas call only contains the node name and not the entire node path. Passing the parent node where the new subtree will be created to dlpar_configure_connector allows the correct node path to be prefixed in the full_name field. Signed-off-by: NTyrel Datwyler <tyreld@linux.vnet.ibm.com> Acked-by: NNathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Tyrel Datwyler 提交于
Currently the OF_DYNAMIC and kref initialization for a node happens in dlpar_attach_node. However, a node passed to dlpar_attach_node may be a tree containing child nodes, and no initialization traversal is done on the tree. Since the children never get their kref initialized or the OF_DYNAMIC flag set these nodes are prevented from ever being released from memory should they become detached. This initialization step is better done at the time each node is allocated in dlpar_parse_cc_node. Signed-off-by: NTyrel Datwyler <tyreld@linux.vnet.ibm.com> Acked-by: NNathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Tyrel Datwyler 提交于
On the first call to ibm,update-properties for a node the first property returned is the full node path. Currently this is not parsed correctly by the update_dt_node function. Commit 2e9b7b02 attempted to fix this, but was incorrect as it made a wrong assumption about the layout of the first property in the work area. Further, if ibm,update-properties must be called multiple times for the same node this special property should only be skipped after the initial call. The first property descriptor returned consists of the property name, property value length, and property value. The property name is an empty string, property length is encoded in 4 byte integer, and the property value is the node path. Signed-off-by: NTyrel Datwyler <tyreld@linux.vnet.ibm.com> Acked-by: NNathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Tyrel Datwyler 提交于
The work area buffer returned by the ibm,update-properties rtas call contains 20 bytes of header information prior to the property value descriptor data. Currently update_dt_node tries to advance over this header using sizeof(upwa). The update_props_workarea struct contains 20 bytes worth of fields, that map to the relevant header data, but the sizeof the structure is 24 bytes due to 4 bytes of padding at the end of the structure. Packing the structure ensures that we don't advance too far over the rtas buffer. Signed-off-by: NTyrel Datwyler <tyreld@linux.vnet.ibm.com> Acked-by: NNathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Tyrel Datwyler 提交于
The rc variable is initially used to store the return code from the ibm,update-properties rtas call which returns 0 or 1 on success. A return code of 1 indicates that ibm,update-properties must be called again for the node. However, the rc variable is overwritten by a call to update_dt_prop which returns 0 on success. This results in ibm,update-properties not being called again for the given node when the rtas call rc was previously 1. Signed-off-by: NTyrel Datwyler <tyreld@linux.vnet.ibm.com> Acked-by: NNathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Tyrel Datwyler 提交于
The update_dt_prop helper function fails to set the IN/OUT parameter prop to NULL after a complete property has been parsed from the work area returned by the ibm,update-properties rtas function. This results in the property list of the device node being updated is corrupted and becomes a loop since the same property structure is used repeatedly. Signed-off-by: NTyrel Datwyler <tyreld@linux.vnet.ibm.com> Acked-by: NNathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Michael Ellerman 提交于
The spec says it "may be problematic" if CPU x registers the VPA of CPU y. Add a warning in case we ever do that. Signed-off-by: NMichael Ellerman <michael@ellerman.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Deepthi Dharwar 提交于
As a part of pseries_idle backend driver cleanup to make the code common to both pseries and powernv platforms, it is necessary to move the backend-driver code to drivers/cpuidle. As a pre-requisite for that, it is essential to move plpar_wrapper.h to include/asm. Signed-off-by: NDeepthi Dharwar <deepthi@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Deepthi Dharwar 提交于
As a part of pseries_idle cleanup to make the backend driver code common to both pseries and powernv. Remove non-essential smt_snooze_delay declaration in pseries.h header file and pseries.h file inclusion in pseries/processor_idle.c Signed-off-by: NDeepthi Dharwar <deepthi@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 20 8月, 2013 4 次提交
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由 Aruna Balakrishnaiah 提交于
If data returned from pstore is compressed, nvram's write callback will add a flag ERR_TYPE_KERNEL_PANIC_GZ indicating the data is compressed while writing to nvram. If the data read from nvram is compressed, nvram's read callback will set the flag 'compressed'. The patch adds backward compatibilty with old format oops header when reading from pstore. Signed-off-by: NAruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Reviewed-by: NKees Cook <keescook@chromium.org> Signed-off-by: NTony Luck <tony.luck@intel.com>
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由 Aruna Balakrishnaiah 提交于
Backends will set the flag 'compressed' after reading the log from persistent store to indicate the data being returned to pstore is compressed or not. Signed-off-by: NAruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Reviewed-by: NKees Cook <keescook@chromium.org> Signed-off-by: NTony Luck <tony.luck@intel.com>
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由 Aruna Balakrishnaiah 提交于
Addition of new argument 'compressed' in the write call back will help the backend to know if the data passed from pstore is compressed or not (In case where compression fails.). If compressed, the backend can add a tag indicating the data is compressed while writing to persistent store. Signed-off-by: NAruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Reviewed-by: NKees Cook <keescook@chromium.org> Signed-off-by: NTony Luck <tony.luck@intel.com>
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由 Aruna Balakrishnaiah 提交于
(De)compression support is provided in pstore in subsequent patches which needs an additional argument 'compressed' to determine if the data is compressed or not. This patch will take care of removing (de)compression in nvram with pstore which was making use of 'hsize' argument in pstore write as 'hsize' will be removed in the subsequent patch. Signed-off-by: NAruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Reviewed-by: NKees Cook <keescook@chromium.org> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 14 8月, 2013 3 次提交
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由 Anton Blanchard 提交于
Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
The lppaca, slb_shadow and dtl_entry hypervisor structures are big endian, so we have to byte swap them in little endian builds. LE KVM hosts will also need to be fixed but for now add an #error to remind us. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
We pass dma_window to of_parse_dma_window as a void * and then run through hoops to cast it back to a u32 array. In the process we lose endian annotation. Simplify it by just passing a __be32 * down. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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