powerpc/cell: Remove CBE_CPUFREQ_SPU_GOVERNOR

Although this driver is still buildable, it can't actually do anything
in practice now that the low-level cpufreq driver for Cell has been
disabled due

powerpc/cell: Remove CBE_CPUFREQ_SPU_GOVERNOR

Although this driver is still buildable, it can't actually do anything
in practice now that the low-level cpufreq driver for Cell has been
disabled due to the removal of CBE_RAS.

Signed-off-by: Michael Ellerman <[email protected]>
Signed-off-by: Madhavan Srinivasan <[email protected]>
Link: https://patch.msgid.link/[email protected]

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powerpc/cell: Remove support for IBM Cell Blades

IBM Cell Blades used the Cell processor and the "blade" server form
factor. They were sold as models QS20, QS21 & QS22 from roughly 2006 to
2012 [1].

powerpc/cell: Remove support for IBM Cell Blades

IBM Cell Blades used the Cell processor and the "blade" server form
factor. They were sold as models QS20, QS21 & QS22 from roughly 2006 to
2012 [1]. They were used in a few supercomputers (eg. Roadrunner) that
have since been dismantled, and were not that widely used otherwise.

Until recently I still had a working QS22, which meant I was able to
keep the platform support working, but unfortunately that machine has
now died.

I'm not aware of any users. If there is a user that wants to keep the
upstream support working, we can look at bringing some of the code back
as appropriate.

See previous discussion at [2].

Remove the top-level config symbol PPC_IBM_CELL_BLADE, and then
the dependent symbols PPC_CELL_NATIVE, PPC_CELL_COMMON, CBE_RAS,
PPC_IBM_CELL_RESETBUTTON, PPC_IBM_CELL_POWERBUTTON, CBE_THERM, and
AXON_MSI. Then remove the associated C files and headers, and trim
unused header content (some is shared with PS3).

Note that PPC_CELL_COMMON sounds like it would build code shared with
PS3, but it does not. It's a relic from when code was shared between the
Blade support and QPACE support.

Most of the primary authors already have CREDITS entries, with the
exception of Christian, so add one for him.

[1]: https://www.theregister.com/2011/06/28/ibm_kills_qs22_blade
[2]: https://lore.kernel.org/linuxppc-dev/[email protected]

Acked-by: Arnd Bergmann <[email protected]>
Acked-by: Jeremy Kerr <[email protected]>
Acked-by: Segher Boessenkool <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Signed-off-by: Madhavan Srinivasan <[email protected]>
Link: https://patch.msgid.link/[email protected]

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arch: powerpc: Stop building and using oprofile

The "oprofile" user-space tools don't use the kernel OPROFILE support
any more, and haven't in a long time. User-space has been converted to
the perf

arch: powerpc: Stop building and using oprofile

The "oprofile" user-space tools don't use the kernel OPROFILE support
any more, and haven't in a long time. User-space has been converted to
the perf interfaces.

This commits stops building oprofile for powerpc and removes any
reference to it from directories in arch/powerpc/ apart from
arch/powerpc/oprofile, which will be removed in the next commit (this is
broken into two commits as the size of the commit became very big, ~5k
lines).

Note that the member "oprofile_cpu_type" in "struct cpu_spec" isn't
removed as it was also used by other parts of the code.

Suggested-by: Christoph Hellwig <[email protected]>
Suggested-by: Linus Torvalds <[email protected]>
Signed-off-by: Viresh Kumar <[email protected]>
Acked-by: Robert Richter <[email protected]>
Acked-by: William Cohen <[email protected]>
Acked-by: Al Viro <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>

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powerpc/Makefiles: Convert ifeq to ifdef where possible

In Makefiles if we're testing a CONFIG_FOO symbol for equality with 'y'
we can instead just use ifdef. The latter reads easily, so convert to

powerpc/Makefiles: Convert ifeq to ifdef where possible

In Makefiles if we're testing a CONFIG_FOO symbol for equality with 'y'
we can instead just use ifdef. The latter reads easily, so convert to
it where possible.

Signed-off-by: Rodrigo R. Galvao <[email protected]>
Reviewed-by: Mauro S. M. Rodrigues <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>

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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

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 <[email protected]>
Reviewed-by: Philippe Ombredanne <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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powerpc/cell: Remove the Cell QPACE code

All users of QPACE have upgraded to QPACE2 so remove the Cell QPACE code.

Signed-off-by: Rashmica Gupta <[email protected]>
Acked-by: Arnd Bergmann <arnd@a

powerpc/cell: Remove the Cell QPACE code

All users of QPACE have upgraded to QPACE2 so remove the Cell QPACE code.

Signed-off-by: Rashmica Gupta <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>

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powerpc: Remove the celleb support

The celleb code has seen no actual development for ~7 years.

We (maintainers) have no access to test hardware, and it is highly
likely the code has bit-rotted.

A

powerpc: Remove the celleb support

The celleb code has seen no actual development for ~7 years.

We (maintainers) have no access to test hardware, and it is highly
likely the code has bit-rotted.

As far as we're aware the hardware was never widely available, and is
certainly no longer available, and no one on the list has shown any
interest in it over the years.

So remove it. If anyone has one and cares please speak up.

Signed-off-by: Michael Ellerman <[email protected]>
Acked-by: Benjamin Herrenschmidt <[email protected]>
Acked-by: Jeremy Kerr <[email protected]>

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powerpc/cell: Move spu_handle_mm_fault() out of cell platform

Currently spu_handle_mm_fault() is in the cell platform.

This code is generically useful for other non-cell co-processors on powerpc.

powerpc/cell: Move spu_handle_mm_fault() out of cell platform

Currently spu_handle_mm_fault() is in the cell platform.

This code is generically useful for other non-cell co-processors on powerpc.

This patch moves this function out of the cell platform into arch/powerpc/mm so
that others may use it.

Signed-off-by: Ian Munsie <[email protected]>
Signed-off-by: Michael Neuling <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>

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cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq

This patch moves cpufreq driver of powerpc platforms/cell to drivers/cpufreq.

Signed-off-by: Viresh Kumar <viresh.kumar@linar

cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq

This patch moves cpufreq driver of powerpc platforms/cell to drivers/cpufreq.

Signed-off-by: Viresh Kumar <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>

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powerpc: Remove stubbed beat smp support

I have no idea if the beat hypervisor supports multiple cpus in
a partition, but the code has not been touched since these stubs
were added in February of 20

powerpc: Remove stubbed beat smp support

I have no idea if the beat hypervisor supports multiple cpus in
a partition, but the code has not been touched since these stubs
were added in February of 2007 except to move them in April of 2008.
These are stubs: start_cpu always returns fail (which is dropped),
the message passing and reciving are empty functions, and the top
of file comment says "Incomplete".

Signed-off-by: Milton Miller <[email protected]>
Signed-off-by: Benjamin Herrenschmidt <[email protected]>

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powerpc/pci: Move IO workarounds to the common kernel dir

Signed-off-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Signed-off-by: Ben

powerpc/pci: Move IO workarounds to the common kernel dir

Signed-off-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Signed-off-by: Benjamin Herrenschmidt <[email protected]>

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powerpc/cell: Fix Axon MSI driver dependencies

The Axon MSI driver depends on more than just PCI_MSI, so add a
Kconfig fragment for it. Fixes randconfig build failures.

Signed-off-by: Michael Eller

powerpc/cell: Fix Axon MSI driver dependencies

The Axon MSI driver depends on more than just PCI_MSI, so add a
Kconfig fragment for it. Fixes randconfig build failures.

Signed-off-by: Michael Ellerman <[email protected]>
Signed-off-by: Benjamin Herrenschmidt <[email protected]>

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powerpc/cell: add QPACE as a separate Cell platform

Since the QPACE (Chromodynamics Parallel Computing on the
Cell Broadband Engine) platform doesn't use a iommu, doesn't
have PCI devices and a MPIC

powerpc/cell: add QPACE as a separate Cell platform

Since the QPACE (Chromodynamics Parallel Computing on the
Cell Broadband Engine) platform doesn't use a iommu, doesn't
have PCI devices and a MPIC much lesser setup and
configurations are needed. So far all devices are detected
as OF device. A notifier function is used to set the dma_ops
for the of_platform bus. Further this patch splits the
PPC_CELL_NATIVE into PPC_CELL_COMMON which are parts that are
shared with the QPACE platform and the rest.

Signed-off-by: Benjamin Krill <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>

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powerpc/cell: Add support for power button of future IBM cell blades

This patch adds support for the power button on future IBM cell blades.
It actually doesn't shut down the machine. Instead it exp

powerpc/cell: Add support for power button of future IBM cell blades

This patch adds support for the power button on future IBM cell blades.
It actually doesn't shut down the machine. Instead it exposes an
input device /dev/input/event0 to userspace which sends KEY_POWER
if power button has been pressed.
haldaemon actually recognizes the button, so a plattform independent acpid
replacement should handle it correctly.

Signed-off-by: Christian Krafft <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
Signed-off-by: Benjamin Herrenschmidt <[email protected]>

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powerpc/cell/cpufreq: Add spu aware cpufreq governor

This patch adds a cpufreq governor that takes the number of running spus
into account. It's very similar to the ondemand governor, but not as com

powerpc/cell/cpufreq: Add spu aware cpufreq governor

This patch adds a cpufreq governor that takes the number of running spus
into account. It's very similar to the ondemand governor, but not as complex.
Instead of hacking spu load into the ondemand governor it might be easier to
have cpufreq accepting multiple governors per cpu in future.
Don't know if this is the right way, but it would keep the governors simple.

Signed-off-by: Christian Krafft <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Dave Jones <[email protected]>
Signed-off-by: Benjamin Herrenschmidt <[email protected]>

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[POWERPC] celleb: Add support for PCI Express

This adds support for PCI Express port on Celleb. I/O space of this
PCI Express port is not mapped in memory space. So we use the
io-workaround mechan

[POWERPC] celleb: Add support for PCI Express

This adds support for PCI Express port on Celleb. I/O space of this
PCI Express port is not mapped in memory space. So we use the
io-workaround mechanism to make accesses indirect.

Signed-off-by: Kou Ishizaki <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Signed-off-by: Paul Mackerras <[email protected]>

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[POWERPC] celleb: Move miscellaneous files for Beat

This moves miscellaneous files for Beat into platforms/cell/.
All files in this patch are used by celleb-beat only.

Signed-off-by: Kou Ishizaki <

[POWERPC] celleb: Move miscellaneous files for Beat

This moves miscellaneous files for Beat into platforms/cell/.
All files in this patch are used by celleb-beat only.

Signed-off-by: Kou Ishizaki <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Acked-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Paul Mackerras <[email protected]>

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[POWERPC] celleb: Move a file for SPU on Beat

This moves SPU support code on Beat into platforms/cell/.

Signed-off-by: Kou Ishizaki <[email protected]>
Acked-by: Arnd Bergmann <arnd@arndb.

[POWERPC] celleb: Move a file for SPU on Beat

This moves SPU support code on Beat into platforms/cell/.

Signed-off-by: Kou Ishizaki <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Acked-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Paul Mackerras <[email protected]>

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[POWERPC] celleb: Move files for Beat mmu and iommu

This moves files for mmu and iommu on Beat into platforms/cell/.
All files in this patch are used by celleb-beat only.

Signed-off-by: Kou Ishizak

[POWERPC] celleb: Move files for Beat mmu and iommu

This moves files for mmu and iommu on Beat into platforms/cell/.
All files in this patch are used by celleb-beat only.

Signed-off-by: Kou Ishizaki <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Acked-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Paul Mackerras <[email protected]>

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[POWERPC] celleb: Move files for Beat hvcall interfaces

This moves files for Beat hvcall interfaces into platforms/cell/.
All files in this patch are used by celleb-beat only.

Signed-off-by: Kou Is

[POWERPC] celleb: Move files for Beat hvcall interfaces

This moves files for Beat hvcall interfaces into platforms/cell/.
All files in this patch are used by celleb-beat only.

Signed-off-by: Kou Ishizaki <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Acked-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Paul Mackerras <[email protected]>

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[POWERPC] celleb: Move the SCC related code for celleb

This moves the SCC (Super Companion Chip) related code for celleb
into platforms/cell/.
All files in this patch are used by celleb-beat and cel

[POWERPC] celleb: Move the SCC related code for celleb

This moves the SCC (Super Companion Chip) related code for celleb
into platforms/cell/.
All files in this patch are used by celleb-beat and celleb-native
commonly.

Signed-off-by: Kou Ishizaki <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Acked-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Paul Mackerras <[email protected]>

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[POWERPC] celleb: Move the files for celleb base support

This moves the base code for celleb support into platforms/cell/.
All files in this patch are used by celleb-beat and celleb-native
commonly.

[POWERPC] celleb: Move the files for celleb base support

This moves the base code for celleb support into platforms/cell/.
All files in this patch are used by celleb-beat and celleb-native
commonly.

Signed-off-by: Kou Ishizaki <[email protected]>
Acked-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Paul Mackerras <[email protected]>

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[POWERPC] celleb: Consolidate io-workarounds code

Now, we can use generic io-workarounds mechanism and the workaround
code for spider-pci. This changes Celleb PCI code to use spider-pci
code.

Signe

[POWERPC] celleb: Consolidate io-workarounds code

Now, we can use generic io-workarounds mechanism and the workaround
code for spider-pci. This changes Celleb PCI code to use spider-pci
code.

Signed-off-by: Kou Ishizaki <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Acked-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Paul Mackerras <[email protected]>

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[POWERPC] cell: Generalize io-workarounds code

This splits cell io-workaround code into spider-pci dependent code and
a generic part, and also moves io-workarounds initialization into
cell_setup_phb

[POWERPC] cell: Generalize io-workarounds code

This splits cell io-workaround code into spider-pci dependent code and
a generic part, and also moves io-workarounds initialization into
cell_setup_phb.

Signed-off-by: Kou Ishizaki <[email protected]>
Acked-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Paul Mackerras <[email protected]>

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[POWERPC] Oprofile: Remove dependency on spufs module

This removes an OProfile dependency on the spufs module. This
dependency was causing a problem for multiplatform systems that are
built with su

[POWERPC] Oprofile: Remove dependency on spufs module

This removes an OProfile dependency on the spufs module. This
dependency was causing a problem for multiplatform systems that are
built with support for Oprofile on Cell but try to load the oprofile
module on a non-Cell system.

Signed-off-by: Bob Nelson <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Jeremy Kerr <[email protected]>
Signed-off-by: Paul Mackerras <[email protected]>

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