#
8e3d0b8d |
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12-Feb-2024 |
Ricardo B. Marliere <ricardo@marliere.net> |
powerpc: mpic: make mpic_subsys const Since commit d492cc2573a0 ("driver core: device.h: make struct bus_type a const *"), the driver core can properly handle constant struct bus_type, move the mpic_subsys variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: "Ricardo B. Marliere" <ricardo@marliere.net> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240212-bus_cleanup-powerpc2-v2-3-8441b3f77827@marliere.net
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#
6c552983 |
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16-Dec-2021 |
Nick Child <nick.child@ibm.com> |
powerpc/sysdev: Add __init attribute to eligible functions Some files functions in 'arch/powerpc/sysdev' are deserving of an `__init` macro attribute. These functions are only called by other initialization functions and therefore should inherit the attribute. Also, change function declarations in header files to include `__init`. Signed-off-by: Nick Child <nick.child@ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20211216220035.605465-6-nick.child@ibm.com
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#
0f99153d |
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19-Oct-2018 |
Christophe Leroy <christophe.leroy@c-s.fr> |
powerpc/msi: Fix compile error on mpc83xx mpic_get_primary_version() is not defined when not using MPIC. The compile error log like: arch/powerpc/sysdev/built-in.o: In function `fsl_of_msi_probe': fsl_msi.c:(.text+0x150c): undefined reference to `fsl_mpic_primary_get_version' Signed-off-by: Jia Hongtao <hongtao.jia@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com> Reported-by: Radu Rendec <radu.rendec@gmail.com> Fixes: 807d38b73b6 ("powerpc/mpic: Add get_version API both for internal and external use") Cc: stable@vger.kernel.org Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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#
b2441318 |
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01-Nov-2017 |
Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
License cleanup: add SPDX GPL-2.0 license identifier to files with no license Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
807d38b7 |
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09-Apr-2013 |
Hongtao Jia <hongtao.jia@freescale.com> |
powerpc/mpic: Add get_version API both for internal and external use 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. This function had been previously added but was removed by commit 5e86bfde9cd93f2 ("powerpc/mpic: remove unused functions") due to the lack of a user. This function will be used by "powerpc/mpic: Add get_version API both for internal and external use". Signed-off-by: Jia Hongtao <hongtao.jia@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> [scottwood@freescale.com: changelog update] Signed-off-by: Scott Wood <scottwood@freescale.com>
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#
5e86bfde |
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24-Feb-2015 |
Arseny Solokha <asolokha@kb.kras.ru> |
powerpc/mpic: remove unused functions Drop unused fsl_mpic_primary_get_version(), mpic_set_clk_ratio(), mpic_set_serial_int(). + fsl_mpic_primary_get_version() is just a safe wrapper around fsl_mpic_get_version() for SMP configurations. While the latter is called explicitly for handling PIC initialization and setting up error interrupt vector depending on PIC hardware version, the former isn't used for anything. + As for mpic_set_clk_ratio() and mpic_set_serial_int(), they both are almost nine years old[1] but still have no chance to be called even from out-of-tree modules because they both are __init and of course aren't exported. [1] https://lists.ozlabs.org/pipermail/linuxppc-dev/2006-June/023867.html Signed-off-by: Arseny Solokha <asolokha@kb.kras.ru> Cc: hongtao.jia@freescale.com Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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#
df1024ad |
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01-Jul-2013 |
Hongtao Jia <hongtao.jia@freescale.com> |
powerpc/msi: Fix compile error on mpc83xx mpic_get_primary_version() is not defined when not using MPIC. The compile error log like: arch/powerpc/sysdev/built-in.o: In function `fsl_of_msi_probe': fsl_msi.c:(.text+0x150c): undefined reference to `fsl_mpic_primary_get_version' Signed-off-by: Jia Hongtao <hongtao.jia@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
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#
9e6f31a9 |
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08-Apr-2013 |
Dongsheng.wang@freescale.com <Dongsheng.wang@freescale.com> |
powerpc/mpic: create mpic subsystem object 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>
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#
86d37969 |
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09-Apr-2013 |
Hongtao Jia <hongtao.jia@freescale.com> |
powerpc/mpic: Add get_version API both for internal and external use 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>
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#
0a408164 |
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07-Aug-2012 |
Varun Sethi <Varun.Sethi@freescale.com> |
powerpc/mpic: FSL MPIC error interrupt support. All SOC device error interrupts are muxed and delivered to the core as a single MPIC error interrupt. Currently all the device drivers requiring access to device errors have to register for the MPIC error interrupt as a shared interrupt. With this patch we add interrupt demuxing capability in the mpic driver, allowing device drivers to register for their individual error interrupts. This is achieved by handling error interrupts in a cascaded fashion. MPIC error interrupt is handled by the "error_int_handler", which subsequently demuxes it using the EISR and delivers it to the respective drivers. The error interrupt capability is dependent on the MPIC EIMR register, which was introduced in FSL MPIC version 4.1 (P4080 rev2). So, error interrupt demuxing capability is dependent on the MPIC version and can be used for versions >= 4.1. Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com> Signed-off-by: Bogdan Hamciuc <bogdan.hamciuc@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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#
03bcb7e3 |
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09-Jul-2012 |
Varun Sethi <Varun.Sethi@freescale.com> |
powerpc/mpic: finish supporting timer group B on Freescale chips Previously, these interrupts would be mapped, but the offset calculation was broken, and only the first group was initialized. Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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#
446f6d06 |
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19-Apr-2012 |
Benjamin Herrenschmidt <benh@kernel.crashing.org> |
powerpc/mpic: Properly set default triggers This gets rid of the unused default senses array, and replaces the incorrect use of IRQ_TYPE_NONE with the new IRQ_TYPE_DEFAULT for the initial set_trigger() call when mapping an interrupt. This in turn makes us read the HW state and update the irq desc accordingly. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
e55d7f73 |
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22-Dec-2011 |
Kyle Moffett <Kyle.D.Moffett@boeing.com> |
powerpc/mpic: Remove duplicate MPIC_WANTS_RESET flag There are two separate flags controlling whether or not the MPIC is reset during initialization, which is completely unnecessary, and only one of them can be specified in the device tree. Also, most platforms in-tree right now do actually want to reset the MPIC during initialization anyways, which means lots of duplicate code passing the MPIC_WANTS_RESET flag. Fix all of the callers which currently do not pass the MPIC_WANTS_RESET flag to pass the MPIC_NO_RESET flag, then remove the MPIC_WANTS_RESET flag and make the code reset the MPIC by default. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
5019609f |
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22-Dec-2011 |
Kyle Moffett <Kyle.D.Moffett@boeing.com> |
powerpc/mpic: Remove MPIC_BROKEN_FRR_NIRQS and duplicate irq_count The mpic->irq_count variable is only used as a software error-checking limit to determine whether or not an IRQ number is valid. In board code which does not manually specify an IRQ count to mpic_alloc(), i.e. 0, it is automatically detected from the number of ISUs and the ISU size. In practice, all hardware ends up with irq_count == num_sources, so all of the runtime checks on mpic->irq_count should just check the value of mpic->num_sources instead. When platform hardware does not correctly report the number of IRQs, which only happens on the MPC85xx/MPC86xx, the MPIC_BROKEN_FRR_NIRQS flag is used to override the detected value of num_sources with the manual irq_count parameter. Since there's no need to manually specify the number of IRQs except in this case, the extra flag can be eliminated and the test changed to "irq_count != 0". Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
bae1d8f1 |
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14-Feb-2012 |
Grant Likely <grant.likely@secretlab.ca> |
irq_domain/powerpc: Use common irq_domain structure instead of irq_host This patch drops the powerpc-specific irq_host structures and uses the common irq_domain strucutres defined in linux/irqdomain.h. It also fixes all the users to use the new structure names. Renaming irq_host to irq_domain has been discussed for a long time, and this patch is a step in the process of generalizing the powerpc virq code to be usable by all architecture. An astute reader will notice that this patch actually removes the irq_host structure instead of renaming it. This is because the irq_domain structure already exists in include/linux/irqdomain.h and has the needed data members. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Milton Miller <miltonm@bga.com> Tested-by: Olof Johansson <olof@lixom.net>
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#
c51242e7 |
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01-Dec-2011 |
Kyle Moffett <Kyle.D.Moffett@boeing.com> |
powerpc/mpic: Cache the device-tree node in "struct mpic" Store the node pointer in the MPIC during initialization so that all of the later operational code can just reuse the cached pointer. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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be8bec56 |
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01-Dec-2011 |
Kyle Moffett <Kyle.D.Moffett@boeing.com> |
powerpc/mpic: Invert the meaning of MPIC_PRIMARY It turns out that there are only 2 in-tree platforms which use MPICs which are not "primary": IBM Cell and PowerMac. To reduce the complexity of the typical board setup code, invert the MPIC_PRIMARY bit into MPIC_SECONDARY. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
e7a98675 |
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01-Dec-2011 |
Kyle Moffett <Kyle.D.Moffett@boeing.com> |
powerpc/mpic: Save computed phys_addr for board-specific code The MPIC code can already perform an automatic OF address translation step as part of mpic_alloc(), but several boards need to use that base address when they perform mpic_assign_isu(). The easiest solution is to save the computed physical address into the "struct mpic" for later use by the board code. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
14b92470 |
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08-Jul-2011 |
Timur Tabi <timur@freescale.com> |
powerpc/mpic: Add support for discontiguous cores There is one place in the MPIC driver that assumes that the cores are numbered from 0 to n-1. However, this is not true if the CPUs are not numbered sequentially. This can happen on a eight-core SOC where cores two and three are removed in the device tree. So instead of blindly looping, we iterate over the discovered CPUs and use the SMP ID as the index. This means that we no longer ask the MPIC how many CPUs there are, so we also delete mpic->num_cpus. We also catch if the number of CPUs in the SOC exceeds the number that the MPIC supports. This should never happen, of course, but it's good to be sure. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
ea94187f |
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24-Mar-2011 |
Scott Wood <scottwood@freescale.com> |
powerpc/mpic: add the mpic global timer support Add support for MPIC timers as requestable interrupt sources. Based on http://patchwork.ozlabs.org/patch/20941/ by Dave Liu. Signed-off-by: Dave Liu <daveliu@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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#
22d168ce |
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24-Mar-2011 |
Scott Wood <scottwood@freescale.com> |
powerpc/mpic: parse 4-cell intspec types other than zero Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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#
f5a592f7 |
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26-Apr-2011 |
Rafael J. Wysocki <rjw@rjwysocki.net> |
PM / PowerPC: Use struct syscore_ops instead of sysdevs for PM Make some PowerPC architecture's code use struct syscore_ops objects for power management instead of sysdev classes and sysdevs. This simplifies the code and reduces the kernel's memory footprint. It also is necessary for removing sysdevs from the kernel entirely in the future. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
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#
dfec2202 |
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14-Mar-2011 |
Meador Inge <meador_inge@mentor.com> |
powerpc: Make MPIC honor the "pic-no-reset" device tree property This property, defined in the Open PIC binding, tells the kernel not to use the reset bit in the global configuration register. Additionally, its presence mandates that only sources which are actually used (i.e. appear in the device tree) should have their VECPRI bits initialized. Although, "pic-no-reset" can be used for the same use cases that "protected-sources" is covering, the "protected-sources" implementation was left completely intact. This is a more pragmatic approach as there are already several existing systems which use protected sources. If "pic-no-reset" *and* "protected-sources" are both used, however, then "pic-no-reset" takes precedence in terms of the init behavior and the sanity checks done by protected sources will still take place. Signed-off-by: Meador Inge <meador_inge@mentor.com> Cc: Hollis Blanchard <hollis_blanchard@mentor.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
835c0553 |
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08-Mar-2011 |
Lennert Buytenhek <buytenh@wantstofly.org> |
powerpc: mpic irq_data conversion. Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
2ef613cb |
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06-May-2010 |
Benjamin Herrenschmidt <benh@kernel.crashing.org> |
powerpc/cpumask: Convert mpic driver to new cpumask API Convert to the new cpumask API. irq_choose_cpu can be simplified by using cpumask_next and cpumask_first. smp_mpic_message_pass was doing open coded cpumask manipulation and passing an int for a cpumask into mpic_send_ipi. Since mpic_send_ipi is only used locally, make it static and convert it to take a cpumask. This allows us to clean up the mess in smp_mpic_message_pass. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
203041ad |
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17-Feb-2010 |
Thomas Gleixner <tglx@linutronix.de> |
powerpc: Convert mpic locks to raw_spinlock mpic_lock, irq_rover_lock and fixup_lock need to be real spinlocks in RT. Convert them to raw_spinlock. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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#
d91e4ea7 |
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07-Jan-2009 |
Kumar Gala <galak@kernel.crashing.org> |
powerpc: Add support for CoreInt delivery of interrupts on MPIC CoreInt provides a mechansim to deliver the IRQ vector directly into the core on an interrupt (via the SPR EPR) rather than having to go IACK on the PIC. This is suppose to provide an improvment in interrupt latency by reducing the time to get the IRQ vector. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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#
3c10c9c4 |
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28-Oct-2008 |
Kumar Gala <galak@kernel.crashing.org> |
powerpc/mpic: Fix regression caused by change of default IRQ affinity The Freescale implementation of MPIC only allows a single CPU destination for non-IPI interrupts. We add a flag to the mpic_init to distinquish these variants of MPIC. We pull in the irq_choose_cpu from sparc64 to select a single CPU as the destination of the interrupt. This is to deal with the fact that the default smp affinity was changed by commit 18404756765c713a0be4eb1082920c04822ce588 ("genirq: Expose default irq affinity mask (take 3)") to be all CPUs. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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#
25235f71 |
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05-Aug-2008 |
Michael Ellerman <michael@ellerman.id.au> |
powerpc: Convert the MPIC MSI code to use msi_bitmap This affects the U3 MSI code as well as the PASEMI MSI code. We keep some of the MPIC routines as helpers, and also the U3 best-guess reservation logic. The rest is replaced by the generic code. And a few printk format changes due to hwirq type change. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
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#
b8b572e1 |
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31-Jul-2008 |
Stephen Rothwell <sfr@canb.auug.org.au> |
powerpc: Move include files to arch/powerpc/include/asm from include/asm-powerpc. This is the result of a mkdir arch/powerpc/include/asm git mv include/asm-powerpc/* arch/powerpc/include/asm Followed by a few documentation/comment fixups and a couple of places where <asm-powepc/...> was being used explicitly. Of the latter only one was outside the arch code and it is a driver only built for powerpc. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
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