pm24.git/arch/powerpc/kernel/eeh_cache.c, branch v5.6

powerpc/eeh_cache: Don't use pci_dn when inserting new ranges

2020-01-23T10:31:18Z

At the point where we start inserting ranges into the EEH address cache the binding between pci_dev and eeh_dev has already been set up. Instead of consulting the pci_dn tree we can retrieve the eeh_dev directly using pci_dev_to_eeh_dev(). Signed-off-by: Oliver O'Halloran Reviewed-by: Sam Bobroff Tested-by: Sam Bobroff Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20190715085612.8802-2-oohall@gmail.com

powerpc/eeh: Convert log messages to eeh_edev_* macros

2019-08-22T13:12:47Z

Convert existing messages, where appropriate, to use the eeh_edev_* logging macros. The only effect should be minor adjustments to the log messages, apart from: - A new message in pseries_eeh_probe() "Probing device" to match the powernv case. - The "Probing device" message in pnv_eeh_probe() is now generated slightly later, which will mean that it is no longer emitted for devices that aren't probed due to the initial checks. Signed-off-by: Sam Bobroff Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/ce505a0a7a4a5b0367f0f40f8b26e7c0a9cf4cb7.1565930772.git.sbobroff@linux.ibm.com

powerpc/eeh: Refactor around eeh_probe_devices()

2019-08-22T13:12:46Z

Now that EEH support for all devices (on PowerNV and pSeries) is provided by the pcibios bus add device hooks, eeh_probe_devices() and eeh_addr_cache_build() are redundant and can be removed. Move the EEH enabled message into it's own function so that it can be called from multiple places. Note that previously on pSeries, useless EEH sysfs files were created for some devices that did not have EEH support and this change prevents them from being created. Signed-off-by: Sam Bobroff Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/33b0a6339d5ac88693de092d6fba984f2a5add66.1565930772.git.sbobroff@linux.ibm.com

powerpc/eeh: Initialize EEH address cache earlier

2019-08-22T13:11:48Z

The EEH address cache is currently initialized and populated by a single function: eeh_addr_cache_build(). While the initial population of the cache can only be done once resources are allocated, initialization (just setting up a spinlock) could be done much earlier. So move the initialization step into a separate function and call it from a core_initcall (rather than a subsys initcall). This will allow future work to make use of the cache during boot time PCI scanning. Signed-off-by: Sam Bobroff Reviewed-by: Alexey Kardashevskiy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/0557206741bffee76cdfff042f65321f6f7a5b41.1565930772.git.sbobroff@linux.ibm.com

Merge tag 'powerpc-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2019-07-13T23:08:36Z

Pull powerpc updates from Michael Ellerman: "Notable changes: - Removal of the NPU DMA code, used by the out-of-tree Nvidia driver, as well as some other functions only used by drivers that haven't (yet?) made it upstream. - A fix for a bug in our handling of hardware watchpoints (eg. perf record -e mem: ...) which could lead to register corruption and kernel crashes. - Enable HAVE_ARCH_HUGE_VMAP, which allows us to use large pages for vmalloc when using the Radix MMU. - A large but incremental rewrite of our exception handling code to use gas macros rather than multiple levels of nested CPP macros. And the usual small fixes, cleanups and improvements. Thanks to: Alastair D'Silva, Alexey Kardashevskiy, Andreas Schwab, Aneesh Kumar K.V, Anju T Sudhakar, Anton Blanchard, Arnd Bergmann, Athira Rajeev, Cédric Le Goater, Christian Lamparter, Christophe Leroy, Christophe Lombard, Christoph Hellwig, Daniel Axtens, Denis Efremov, Enrico Weigelt, Frederic Barrat, Gautham R. Shenoy, Geert Uytterhoeven, Geliang Tang, Gen Zhang, Greg Kroah-Hartman, Greg Kurz, Gustavo Romero, Krzysztof Kozlowski, Madhavan Srinivasan, Masahiro Yamada, Mathieu Malaterre, Michael Neuling, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Nishad Kamdar, Oliver O'Halloran, Qian Cai, Ravi Bangoria, Sachin Sant, Sam Bobroff, Satheesh Rajendran, Segher Boessenkool, Shaokun Zhang, Shawn Anastasio, Stewart Smith, Suraj Jitindar Singh, Thiago Jung Bauermann, YueHaibing" * tag 'powerpc-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (163 commits) powerpc/powernv/idle: Fix restore of SPRN_LDBAR for POWER9 stop state. powerpc/eeh: Handle hugepages in ioremap space ocxl: Update for AFU descriptor template version 1.1 powerpc/boot: pass CONFIG options in a simpler and more robust way powerpc/boot: add {get, put}_unaligned_be32 to xz_config.h powerpc/irq: Don't WARN continuously in arch_local_irq_restore() powerpc/module64: Use symbolic instructions names. powerpc/module32: Use symbolic instructions names. powerpc: Move PPC_HA() PPC_HI() and PPC_LO() to ppc-opcode.h powerpc/module64: Fix comment in R_PPC64_ENTRY handling powerpc/boot: Add lzo support for uImage powerpc/boot: Add lzma support for uImage powerpc/boot: don't force gzipped uImage powerpc/8xx: Add microcode patch to move SMC parameter RAM. powerpc/8xx: Use IO accessors in microcode programming. powerpc/8xx: replace #ifdefs by IS_ENABLED() in microcode.c powerpc/8xx: refactor programming of microcode CPM params. powerpc/8xx: refactor printing of microcode patch name. powerpc/8xx: Refactor microcode write powerpc/8xx: refactor writing of CPM microcode arrays ...

powerpc/eeh_cache: fix a W=1 kernel-doc warning

2019-07-01T06:26:54Z

The opening comment mark "/**" is reserved for kernel-doc comments, so it will generate a warning with "make W=1". arch/powerpc/kernel/eeh_cache.c:37: warning: cannot understand function prototype: 'struct pci_io_addr_range Since this is not a kernel-doc for the struct below, but rather an overview of this source eeh_cache.c, just use the free-form comments kernel-doc syntax instead. Signed-off-by: Qian Cai Acked-by: Russell Currey Signed-off-by: Michael Ellerman

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156

2019-05-30T18:26:35Z

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 this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Richard Fontana Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman

powerpc/eeh_cache: Bump log level of eeh_addr_cache_print()

2019-02-21T13:10:14Z

To use this function at all #define DEBUG needs to be set in eeh_cache.c. Considering that printing at pr_debug is probably not all that useful since it adds the additional hurdle of requiring you to enable the debug print if dynamic_debug is in use so this patch bumps it to pr_info. Signed-off-by: Oliver O'Halloran Reviewed-by: Sam Bobroff Signed-off-by: Michael Ellerman

powerpc/eeh_cache: Add a way to dump the EEH address cache

2019-02-21T13:10:14Z

Adds a debugfs file that can be read to view the contents of the EEH address cache. This is pretty similar to the existing eeh_addr_cache_print() function, but that function is intended to debug issues inside of the kernel since it's #ifdef`ed out by default, and writes into the kernel log. Signed-off-by: Oliver O'Halloran Reviewed-by: Sam Bobroff Signed-off-by: Michael Ellerman

powerpc/eeh_cache: Add pr_debug() prints for insert/remove

2019-02-21T13:10:14Z

The EEH address cache is used to map a physical MMIO address back to a PCI device. It's useful to know when it's being manipulated, but currently this requires recompiling with #define DEBUG set. This is pointless since we have dynamic_debug nowdays, so remove the #ifdef guard and add a pr_debug() for the remove case too. Signed-off-by: Oliver O'Halloran Reviewed-by: Sam Bobroff Signed-off-by: Michael Ellerman