parisc/firmware: Fix F-extend for PDC addresses

When running with narrow firmware (64-bit kernel using a 32-bit
firmware), extend PDC addresses into the 0xfffffff0.00000000
region instead of the 0xf

parisc/firmware: Fix F-extend for PDC addresses

When running with narrow firmware (64-bit kernel using a 32-bit
firmware), extend PDC addresses into the 0xfffffff0.00000000
region instead of the 0xf0f0f0f0.00000000 region.

This fixes the power button on the C3700 machine in qemu (64-bit CPU
with 32-bit firmware), and my assumption is that the previous code was
really never used (because most 64-bit machines have a 64-bit firmware),
or it just worked on very old machines because they may only decode
40-bit of virtual addresses.

Cc: [email protected]
Signed-off-by: Helge Deller <[email protected]>

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parisc/firmware: Use PDC constants for narrow/wide firmware

PDC uses the PDC_MODEL_OS64 and PDC_MODEL_OS32 constants, so use
those constants for the internal WIDE_FIRMWARE/NARROW_FIRMWARE too.

Sign

parisc/firmware: Use PDC constants for narrow/wide firmware

PDC uses the PDC_MODEL_OS64 and PDC_MODEL_OS32 constants, so use
those constants for the internal WIDE_FIRMWARE/NARROW_FIRMWARE too.

Signed-off-by: Helge Deller <[email protected]>

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parisc: firmware: Simplify calling non-PA20 functions

Instead of usig #ifdefs, simply return PDC_BAD_PROC for functions
which aren't available on 64-bit CPUs.

Signed-off-by: Helge Deller <deller@gm

parisc: firmware: Simplify calling non-PA20 functions

Instead of usig #ifdefs, simply return PDC_BAD_PROC for functions
which aren't available on 64-bit CPUs.

Signed-off-by: Helge Deller <[email protected]>

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parisc: BTLB: Add BTLB insert and purge firmware function wrappers

Signed-off-by: Helge Deller <[email protected]>

parisc: firmware: Mark pdc_result buffers local

This fixes a sparse warning which suggest to make those static.

Signed-off-by: Helge Deller <[email protected]>

parisc: firmware: Fix sparse context imbalance warnings

Tell sparse about correct context for pdc_cpu_rendezvous_*lock()
functions.

Signed-off-by: Helge Deller <[email protected]>

parisc: firmware: Fix kdoc warnings

Signed-off-by: Helge Deller <[email protected]>

sticon/parisc: Allow 64-bit STI calls in PDC firmware abstration

Some 64-bit machines require us to call the STI ROM in 64-bit mode, e.g.
with the VisFXe graphic card.
This patch allows drivers to u

sticon/parisc: Allow 64-bit STI calls in PDC firmware abstration

Some 64-bit machines require us to call the STI ROM in 64-bit mode, e.g.
with the VisFXe graphic card.
This patch allows drivers to use such 64-bit calling conventions.

Tested-by: John David Anglin <[email protected]>
Signed-off-by: Helge Deller <[email protected]>

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parisc: Replace regular spinlock with spin_trylock on panic path

The panic notifiers' callbacks execute in an atomic context, with
interrupts/preemption disabled, and all CPUs not running the panic

parisc: Replace regular spinlock with spin_trylock on panic path

The panic notifiers' callbacks execute in an atomic context, with
interrupts/preemption disabled, and all CPUs not running the panic
function are off, so it's very dangerous to wait on a regular
spinlock, there's a risk of deadlock.

Refactor the panic notifier of parisc/power driver to make use
of spin_trylock - for that, we've added a second version of the
soft-power function. Also, some comments were reorganized and
trailing white spaces, useless header inclusion and blank lines
were removed.

Cc: "James E.J. Bottomley" <[email protected]>
Cc: Jeroen Roovers <[email protected]>
Acked-by: Helge Deller <[email protected]> # parisc
Signed-off-by: Guilherme G. Piccoli <[email protected]>
Signed-off-by: Helge Deller <[email protected]>

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parisc: Fix return code of pdc_iodc_print()

There is an off-by-one if the printed string includes a new-line
char.

Cc: [email protected]
Signed-off-by: Helge Deller <[email protected]>

parisc: Show MPE/iX model string at bootup

Some (mostly 64-bit machines) machines allow to run MPE/iX and report the MPE
model string via firmware call. Enhance the pdc_model_sysmodel() function to

parisc: Show MPE/iX model string at bootup

Some (mostly 64-bit machines) machines allow to run MPE/iX and report the MPE
model string via firmware call. Enhance the pdc_model_sysmodel() function to
report that model string.
Note that some 32-bit machines like the B160L wrongly report success for the
firmware call, so include a check to prevent showing wrong info.

Signed-off-by: Helge Deller <[email protected]>

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parisc: Move pdc_result struct to firmware.c

Signed-off-by: Helge Deller <[email protected]>

parisc: Fix locking in pdc_iodc_print() firmware call

Utilize pdc_lock spinlock to protect parallel modifications of the
iodc_dbuf[] buffer, check length to prevent buffer overflow of
iodc_dbuf[], d

parisc: Fix locking in pdc_iodc_print() firmware call

Utilize pdc_lock spinlock to protect parallel modifications of the
iodc_dbuf[] buffer, check length to prevent buffer overflow of
iodc_dbuf[], drop the iodc_retbuf[] buffer and fix some wrong
indentings.

Signed-off-by: Helge Deller <[email protected]>
Cc: <[email protected]> # 6.0+

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parisc: Add PDC locking functions for rendezvous code

Add pdc_cpu_rendezvous_lock() and pdc_cpu_rendezvous_unlock()
to lock PDC while CPU is transitioning into rendezvous state.
This is needed, beca

parisc: Add PDC locking functions for rendezvous code

Add pdc_cpu_rendezvous_lock() and pdc_cpu_rendezvous_unlock()
to lock PDC while CPU is transitioning into rendezvous state.
This is needed, because the transition phase may take up to 8 seconds.

Add pdc_pat_get_PDC_entrypoint() to get PDC entry point for current CPU.

Signed-off-by: Helge Deller <[email protected]>

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parisc: Ensure set_firmware_width() is called only once

Call set_firmware_width() only once at runtime.
This prevents that hotplugged CPUs will get stuck in spinlocks later on.

Signed-off-by: Helge

parisc: Ensure set_firmware_width() is called only once

Call set_firmware_width() only once at runtime.
This prevents that hotplugged CPUs will get stuck in spinlocks later on.

Signed-off-by: Helge Deller <[email protected]>

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parisc/firmware: add functions to retrieve TOC data

Add functions to retrieve TOC data from firmware both
for 1.1 and 2.0 PDC.

Signed-off-by: Sven Schnelle <[email protected]>
Signed-off-by: Hel

parisc/firmware: add functions to retrieve TOC data

Add functions to retrieve TOC data from firmware both
for 1.1 and 2.0 PDC.

Signed-off-by: Sven Schnelle <[email protected]>
Signed-off-by: Helge Deller <[email protected]>

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isystem: ship and use stdarg.h

Ship minimal stdarg.h (1 type, 4 macros) as <linux/stdarg.h>.
stdarg.h is the only userspace header commonly used in the kernel.

GPL 2 version of <stdarg.h> can be ex

isystem: ship and use stdarg.h

Ship minimal stdarg.h (1 type, 4 macros) as <linux/stdarg.h>.
stdarg.h is the only userspace header commonly used in the kernel.

GPL 2 version of <stdarg.h> can be extracted from
http://archive.debian.org/debian/pool/main/g/gcc-4.2/gcc-4.2_4.2.4.orig.tar.gz

Signed-off-by: Alexey Dobriyan <[email protected]>
Acked-by: Rafael J. Wysocki <[email protected]>
Acked-by: Ard Biesheuvel <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>

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parisc: firmware: Update references to parisc website

The PA-RISC Linux project web page is now hosted at
https://parisc.wiki.kernel.org

Signed-off-by: Helge Deller <[email protected]>

parisc: add __pdc_cpu_rendezvous()

When stopping SMP cpus send them into rendezvous, so we can
start them again later (when kexec'ing a new kernel).

Signed-off-by: Sven Schnelle <[email protected]

parisc: add __pdc_cpu_rendezvous()

When stopping SMP cpus send them into rendezvous, so we can
start them again later (when kexec'ing a new kernel).

Signed-off-by: Sven Schnelle <[email protected]>
Signed-off-by: Helge Deller <[email protected]>

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

Based on 1 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of th

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

Based on 1 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Allison Randal <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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parisc: Use __ro_after_init in firmware.c

Signed-off-by: Helge Deller <[email protected]>

parisc: Show machine product number during boot

Ask PDC firmware during boot for the original and current product
number as well as the serial number and show it (if available).

Signed-off-by: Helg

parisc: Show machine product number during boot

Ask PDC firmware during boot for the original and current product
number as well as the serial number and show it (if available).

Signed-off-by: Helge Deller <[email protected]>

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parisc: Add PDC PAT cell_info() and pd_get_pdc_revisions() functions

Add wrappers for the PDC_PAT_CELL_GET_INFO and
PDC_PAT_PD_GET_PDC_INTERF_REV PAT PDC subfunctions.

Both provide access to the PA

parisc: Add PDC PAT cell_info() and pd_get_pdc_revisions() functions

Add wrappers for the PDC_PAT_CELL_GET_INFO and
PDC_PAT_PD_GET_PDC_INTERF_REV PAT PDC subfunctions.

Both provide access to the PAT capability bitfield which can guide us if
simultaneous PTLBs are allowed on the bus, and if firmware will
rendezvous all processors within PDCE_Check in case of an HPMC.

Signed-off-by: Helge Deller <[email protected]>

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parisc: Add wrapper for pdc_instr() firmware function

Signed-off-by: Helge Deller <[email protected]>

parisc: Make existing core files reuseable for bootloader

Signed-off-by: Helge Deller <[email protected]>