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3756597a |
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07-Sep-2023 |
Helge Deller <deller@gmx.de> |
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@gmx.de>
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#
510610f9 |
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07-Sep-2023 |
Helge Deller <deller@gmx.de> |
parisc: BTLB: Add BTLB insert and purge firmware function wrappers Signed-off-by: Helge Deller <deller@gmx.de>
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#
ededd9d2 |
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14-May-2023 |
Helge Deller <deller@gmx.de> |
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 <dave.anglin@bell.net> Signed-off-by: Helge Deller <deller@gmx.de>
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#
829632da |
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20-Feb-2023 |
Guilherme G. Piccoli <gpiccoli@igalia.com> |
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" <James.Bottomley@HansenPartnership.com> Cc: Jeroen Roovers <jer@xs4all.nl> Acked-by: Helge Deller <deller@gmx.de> # parisc Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com> Signed-off-by: Helge Deller <deller@gmx.de>
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#
4934fbfb |
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21-Oct-2022 |
Helge Deller <deller@gmx.de> |
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 <deller@gmx.de>
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027c3d34 |
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30-Sep-2022 |
Helge Deller <deller@gmx.de> |
parisc: Convert PDC console to an early console Rewrite the PDC console to become an early console. Beside the fact that now boot information is visible until another (text- or graphics) console takes over, this benefits as well machines with a yet-unsupported STI console and kgdb. Signed-off-by: Helge Deller <deller@gmx.de>
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#
db2b0d76 |
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29-Mar-2022 |
Helge Deller <deller@gmx.de> |
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 <deller@gmx.de>
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#
ecac7036 |
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14-Oct-2021 |
Sven Schnelle <svens@stackframe.org> |
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 <svens@stackframe.org> Signed-off-by: Helge Deller <deller@gmx.de>
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507efd63 |
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08-Sep-2019 |
Sven Schnelle <svens@stackframe.org> |
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 <svens@stackframe.org> Signed-off-by: Helge Deller <deller@gmx.de>
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#
8207d4ee |
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08-Feb-2019 |
Helge Deller <deller@gmx.de> |
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 <deller@gmx.de>
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#
e543b3a6 |
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19-Oct-2018 |
Helge Deller <deller@gmx.de> |
parisc: Retrieve and display the PDC PAT capabilities Signed-off-by: Helge Deller <deller@gmx.de>
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#
bc5a768e |
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13-Nov-2017 |
Helge Deller <deller@gmx.de> |
parisc: Make some PDC structures accessible in uapi headers While working on a qemu and SeaBIOS-port to parisc, those PDC structures are useful to have accessible from userspace. Signed-off-by: Helge Deller <deller@gmx.de>
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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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#
77089c52 |
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17-Sep-2017 |
Helge Deller <deller@gmx.de> |
parisc: Add wrapper for pdc_instr() firmware function Signed-off-by: Helge Deller <deller@gmx.de>
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#
f5213b2c |
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20-Aug-2017 |
Helge Deller <deller@gmx.de> |
parisc: Make existing core files reuseable for bootloader Signed-off-by: Helge Deller <deller@gmx.de>
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#
c9c2877d |
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11-May-2017 |
Helge Deller <deller@gmx.de> |
parisc: Add Page Deallocation Table (PDT) support The firmare in most parisc machines maintains a Page Deallocation Table (PDT) which holds a list of physical memory addresses where hardware detected memory errors (single bit and double bit errors). This patch adds the missing PDC firmware calls and the logic to read the PDT from firmware, report all current PDT entries and exclude the reported bad memory from being used by Linux. Signed-off-by: Helge Deller <deller@gmx.de>
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#
2c2277dc |
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25-Nov-2015 |
Helge Deller <deller@gmx.de> |
parisc: Imporove debug info about space registers and TLB configuration Signed-off-by: Helge Deller <deller@gmx.de>
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#
70c1674f |
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16-Oct-2012 |
David Howells <dhowells@redhat.com> |
UAPI: (Scripted) Disintegrate arch/parisc/include/asm Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
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#
4a8a0788 |
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10-May-2012 |
Rolf Eike Beer <eike-kernel@sf-tec.de> |
parisc: move definition of PAGE0 to asm/page.h This was defined in asm/pdc.h which needs to include asm/page.h for __PAGE_OFFSET. This leads to an include loop so that page.h eventually will include pdc.h again. While this is no problem because of header guards, it is a problem because some symbols may be undefined. Such an error is this: In file included from include/linux/bitops.h:35:0, from include/asm-generic/getorder.h:7, from arch/parisc/include/asm/page.h:162, from arch/parisc/include/asm/pdc.h:346, from arch/parisc/include/asm/processor.h:16, from arch/parisc/include/asm/spinlock.h:6, from arch/parisc/include/asm/atomic.h:20, from include/linux/atomic.h:4, from include/linux/sysfs.h:20, from include/linux/kobject.h:21, from include/linux/device.h:17, from include/linux/eisa.h:5, from arch/parisc/kernel/pci.c:11: arch/parisc/include/asm/bitops.h: In function ‘set_bit’: arch/parisc/include/asm/bitops.h:82:2: error: implicit declaration of function ‘_atomic_spin_lock_irqsave’ [-Werror=implicit-function-declaration] arch/parisc/include/asm/bitops.h:84:2: error: implicit declaration of function ‘_atomic_spin_unlock_irqrestore’ [-Werror=implicit-function-declaration] Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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#
d845e1fb |
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01-Apr-2009 |
Alexander Beregalov <a.beregalov@gmail.com> |
parisc: asm/pdc.h should include asm/page.h Fixes this build error: arch/parisc/kernel/pdc_cons.c:117: error: '__PAGE_OFFSET' undeclared Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
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#
445c088f |
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29-Jan-2009 |
Colin Watson <cjwatson@canonical.com> |
parisc: expose 32/64-bit capabilities in cpuinfo It'd be rather useful for debian-installer if we could get hold of accurate firmware information on whether only 32-bit kernels are supported, only 64-bit kernels, or both; this would allow us to present an accurate menu of kernel packages if more than one is available, rather than the user having to guess. This patch attempts to expose it in cpuinfo. I adjusted pdc_model_capabilities to cope with a potential PDC_INVALID_ARG return as the firmware manual instructs, by assuming 32-bit only. This may be the wrong place for it. I made up user-visible capability names by total fiat and for the moment ignored the other bits that may appear in the capabilities word. I have no PA-RISC machine myself to test on, and no PA experience either, so I rather hope that somebody will kind-heartedly take this and fix it up if needed. I ran it past Dann Frazier on IRC and he said "looks good to me", but I think without testing. Also, this is against the Ubuntu 2.6.28 kernel tree since that's what I had handy and I was a bit tight on disk space to slurp down another tree. Sorry if it's skewed in any relevant way; I'll be happy to adjust if necessary. Thanks in advance! Signed-off-by: Colin Watson <cjwatson@canonical.com> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
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#
79f95ac2 |
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30-Jan-2009 |
Jaswinder Singh Rajput <jaswinderrajput@gmail.com> |
headers_check fix: parisc, pdc.h fix the following 'make headers_check' warning: usr/include/asm-parisc/pdc.h:420: found __[us]{8,16,32,64} type without #include <linux/types.h> Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
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24b574d0 |
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28-Jul-2008 |
Kyle McMartin <kyle@mcmartin.ca> |
parisc: add pdc_coproc_cfg_unlocked and set_firmware_width_unlocked These functions are called only when bringing up the monarch cpu, so it is safe to call them without taking the pdc spinlock. In the future, this may become relevant for lockdep, since these functions were taking spinlocks before start_kernel called the lockdep initializers.
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#
deae26bf |
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28-Jul-2008 |
Kyle McMartin <kyle@mcmartin.ca> |
parisc: move include/asm-parisc to arch/parisc/include/asm
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