Changes in opal.h

f32fcbed - tty: hvc: convert to u8 and size_t

Wed, 06 Dec 2023 07:36:57 +0000

tty: hvc: convert to u8 and size_tSwitch character types to u8 and sizes to size_t. To conform tocharacters/sizes in the rest of the tty layer.Signed-off-by: "Jiri Slaby (SUSE)" Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Christophe Leroy Cc: Amit Shah Cc: Arnd Bergmann Cc: Paul Walmsley Cc: Palmer Dabbelt Cc: Albert Ou Cc: linuxppc-dev@lists.ozlabs.orgCc: virtualization@lists.linux.devCc: linux-riscv@lists.infradead.orgLink: https://lore.kernel.org/r/20231206073712.17776-13-jirislaby@kernel.orgSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

8577dd00 - powerpc/opal: Annotate out param endianness

Wed, 11 Oct 2023 05:37:07 +0000

powerpc/opal: Annotate out param endiannessSparse reports an endian mismatch with args to opal_int_get_xirr().Checking the skiboot source[1] shows the function takes a __be32*(as expected), so update the function declaration to reflect this.[1]: https://github.com/open-power/skiboot/blob/80e2b1dc73/hw/xive.c#L3479Signed-off-by: Benjamin Gray Signed-off-by: Michael Ellerman Link: https://msgid.link/20231011053711.93427-9-bgray@linux.ibm.com List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

326b3f8c - powerpc/powernv/pci: Remove MVE code

Tue, 13 Jun 2023 04:52:01 +0000

powerpc/powernv/pci: Remove MVE codeWith IODA1 support gone the OPAL calls to set MVE are dead code. Removethem.Signed-off-by: Joel Stanley Signed-off-by: Michael Ellerman Link: https://msgid.link/20230613045202.294451-3-joel@jms.id.au List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

77d30535 - powerpc/powernv: remove orphan declarations from opal.h

Tue, 13 Sep 2022 07:50:26 +0000

powerpc/powernv: remove orphan declarations from opal.hRemove the following orphan declarations from opal.h:1. opal_notifier_register()2. opal_notifier_unregister()3. opal_notifier_update_evt()4. opal_notifier_enable()5. opal_notifier_disable()They have been removed since commit 81f2f7ce4c5b ("opal:Remove events notifier"), so remove them.Signed-off-by: Gaosheng Cui Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20220913075029.682327-7-cuigaosheng1@huawei.com List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

e5913db1 - powerpc/powernv: Add __init attribute to eligible functions

Thu, 16 Dec 2021 22:00:26 +0000

powerpc/powernv: Add __init attribute to eligible functionsSome functions defined in 'arch/powerpc/platforms/powernv' aredeserving of an `__init` macro attribute. These functions are onlycalled by other initialization functions and therefore should inheritthe attribute.Also, change function declarations in header files to include `__init`.Signed-off-by: Nick Child Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20211216220035.605465-12-nick.child@ibm.com List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

562d1e20 - powerpc/powernv: remove the nvlink support

Fri, 26 Mar 2021 06:13:11 +0000

powerpc/powernv: remove the nvlink supportThis code was only used by the vfio-nvlink2 code, which itself had noproper use. Drop this huge chunk of code build into every powernvor generic build.Signed-off-by: Christoph Hellwig Acked-by: Greg Kroah-Hartman Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20210326061311.1497642-3-hch@lst.de List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

d936f818 - powerpc/powernv: Fix type of opal_mpipl_query_tag() addr argument

Wed, 21 Apr 2021 12:54:02 +0000

powerpc/powernv: Fix type of opal_mpipl_query_tag() addr argumentopal_mpipl_query_tag() takes a pointer to a 64-bit value, which firmwarewrites a value to. As OPAL is traditionally big endian this value willbe big endian.This can be confirmed by looking at the implementation in skiboot: static uint64_t opal_mpipl_query_tag(enum opal_mpipl_tags tag, __be64 *tag_val) { ... *tag_val = cpu_to_be64(opal_mpipl_tags[tag]); return OPAL_SUCCESS; }Fix the declaration to annotate that the value is big endian.Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20210421125402.1955013-2-mpe@ellerman.id.au List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

9155e234 - powerpc/powernv: Add OPAL API interface to access secure variable

Mon, 11 Nov 2019 03:10:33 +0000

powerpc/powernv: Add OPAL API interface to access secure variableThe X.509 certificates trusted by the platform and required to secureboot the OS kernel are wrapped in secure variables, which arecontrolled by OPAL.This patch adds firmware/kernel interface to read and write OPALsecure variables based on the unique key.This support can be enabled using CONFIG_OPAL_SECVAR.Signed-off-by: Claudio Carvalho Signed-off-by: Nayna Jain Signed-off-by: Eric Richter [mpe: Make secvar_ops __ro_after_init, only build opal-secvar.c if PPC_SECURE_BOOT=y]Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/1573441836-3632-2-git-send-email-nayna@linux.ibm.com List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

6f5f193e - powerpc/opal: add MPIPL interface definitions

Wed, 11 Sep 2019 14:50:12 +0000

powerpc/opal: add MPIPL interface definitionsMPIPL is Memory Preserving IPL supported from POWER9. This enables thekernel to reset the system with memory 'preserved'. Also, it supportscopying memory from a source address to some destination address duringMPIPL boot. Add MPIPL interface definitions here to leverage these f/wfeatures in adding FADump support for PowerNV platform.Signed-off-by: Hari Bathini Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/156821340710.5656.10071829040515662624.stgit@hbathini.in.ibm.com List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

6ccb4ac2 - powerpc/xive: Fix bogus error code returned by OPAL

Wed, 11 Sep 2019 15:52:18 +0000

powerpc/xive: Fix bogus error code returned by OPALThere's a bug in skiboot that causes the OPAL_XIVE_ALLOCATE_IRQ callto return the 32-bit value 0xffffffff when OPAL has run out of IRQs.Unfortunatelty, OPAL return values are signed 64-bit entities anderrors are supposed to be negative. If that happens, the linux codeconfusingly treats 0xffffffff as a valid IRQ number and panics at somepoint.A fix was recently merged in skiboot:e97391ae2bb5 ("xive: fix return value of opal_xive_allocate_irq()")but we need a workaround anyway to support older skiboots alreadyin the field.Internally convert 0xffffffff to OPAL_RESOURCE which is the usual errorreturned upon resource exhaustion.Cc: stable@vger.kernel.org # v4.12+Signed-off-by: Greg Kurz Reviewed-by: Cédric Le Goater Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/156821713818.1985334.14123187368108582810.stgit@bahia.lan List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

63982618 - powerpc/powernv: remove the unused pnv_pci_set_p2p function

Tue, 25 Jun 2019 14:52:36 +0000

powerpc/powernv: remove the unused pnv_pci_set_p2p functionThis function has never been used anywhere in the kernel tree since itwas added to the tree. We also now have proper PCIe P2P APIs in the corekernel, and any new P2P support should be using those.Signed-off-by: Christoph Hellwig Signed-off-by: Michael Ellerman List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

2874c5fd - treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

Mon, 27 May 2019 06:55:01 +0000

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152Based 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 versionextracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-laterhas been chosen to replace the boilerplate/reference in 3029 file(s).Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.orgLink: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.deSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

de269129 - powerpc/hmi: Fix kernel hang when TB is in error state.

Mon, 04 Mar 2019 19:42:19 +0000

powerpc/hmi: Fix kernel hang when TB is in error state.On TOD/TB errors timebase register stops/freezes until HMI error recoverygets TOD/TB back into running state. On successful recovery, TB startsrunning again and udelay() that relies on TB value continues to functionproperly. But in case when HMI fails to recover from TOD/TB errors, theTB register stay freezed. With TB not running the __delay() functionkeeps looping and never return. If __delay() is called while in panicpath then system hangs and never reboots after panic.Signed-off-by: Mahesh Salgaonkar Signed-off-by: Michael Ellerman List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

88ec6b93 - powerpc/xive: add OPAL extensions for the XIVE native exploitation support

Wed, 10 Apr 2019 17:04:33 +0000

powerpc/xive: add OPAL extensions for the XIVE native exploitation supportThe support for XIVE native exploitation mode in Linux/KVM needs acouple more OPAL calls to get and set the state of the XIVE internalstructures being used by a sPAPR guest.Signed-off-by: Cédric Le Goater Reviewed-by: David Gibson Signed-off-by: Michael Ellerman List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

08fb726d - powerpc/powernv: Move opal_power_control_init() call in opal_init().

Thu, 13 Dec 2018 05:47:31 +0000

powerpc/powernv: Move opal_power_control_init() call in opal_init().opal_power_control_init() depends on opal message notifier to beinitialized, which is done in opal_init()->opal_message_init(). But boththese initialization are called through machine initcalls and it alldepends on in which order they being called. So far these are called incorrect order (may be we got lucky) and never saw any issue. But it isclearer to control initialization order explicitly by movingopal_power_control_init() into opal_init().Signed-off-by: Mahesh Salgaonkar Signed-off-by: Michael Ellerman List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

95b861a7 - powerpc/powernv: provide a console flush operation for opal hvc driver

Mon, 30 Apr 2018 14:55:58 +0000

powerpc/powernv: provide a console flush operation for opal hvc driverProvide the flush hv_op for the opal hvc driver. This will flush thefirmware console buffers without spinning with interrupts disabled.Cc: Benjamin Herrenschmidt Cc: linuxppc-dev@lists.ozlabs.orgSigned-off-by: Nicholas Piggin Signed-off-by: Michael Ellerman List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

656ecc16 - crypto/nx: Initialize 842 high and normal RxFIFO control registers

Wed, 13 Jun 2018 07:32:40 +0000

crypto/nx: Initialize 842 high and normal RxFIFO control registersNX increments readOffset by FIFO size in receive FIFO control registerwhen CRB is read. But the index in RxFIFO has to match with thecorresponding entry in FIFO maintained by VAS in kernel. Otherwise NXmay be processing incorrect CRBs and can cause CRB timeout.VAS FIFO offset is 0 when the receive window is opened duringinitialization. When the module is reloaded or in kexec boot, readOffsetin FIFO control register may not match with VAS entry. This patch addsnx_coproc_init OPAL call to reset readOffset and queued entries in FIFOcontrol register for both high and normal FIFOs.Signed-off-by: Haren Myneni [mpe: Fixup uninitialized variable warning]Signed-off-by: Michael Ellerman List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

04baaf28 - powerpc/powernv: Add support to enable sensor groups

Tue, 24 Jul 2018 09:13:08 +0000

powerpc/powernv: Add support to enable sensor groupsAdds support to enable/disable a sensor group at runtime. Thiscan be used to select the sensor groups that needs to be copied tomain memory by OCC. Sensor groups like power, temperature, current,voltage, frequency, utilization can be enabled/disabled at runtime.Signed-off-by: Shilpasri G Bhat Signed-off-by: Michael Ellerman List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

17cc1dd4 - powerpc/powernv: implement opal_put_chars_atomic

Mon, 30 Apr 2018 14:55:51 +0000

powerpc/powernv: implement opal_put_chars_atomicThe RAW console does not need writes to be atomic, so relaxopal_put_chars to be able to do partial writes, and implement an_atomic variant which does not take a spinlock. This API is usedin xmon, so the less locking that is used, the better chance thereis that a crash can be debugged.Cc: Benjamin Herrenschmidt Signed-off-by: Nicholas Piggin Signed-off-by: Michael Ellerman List of files: /linux-6.15/arch/powerpc/include/asm/opal.h

d2a2262e - powerpc/powernv: Implement and use opal_flush_console

Mon, 30 Apr 2018 14:55:48 +0000

powerpc/powernv: Implement and use opal_flush_consoleA new console flushing firmware API was introduced to replace eventpolling loops, and implemented in opal-kmsg with affddff69c55e("powerpc/powernv: Add a kmsg_dumper that flushes console output onpanic"), to flush the console in the panic path.The OPAL console driver has other situations where interrupts are offand it needs to flush the console synchronously. These still use apolling loop.So move the opal-kmsg flush code to opal_flush_console, and use thenew function in opal-kmsg and opal_put_chars.Cc: Benjamin Herrenschmidt Reviewed-by: Russell Currey Signed-off-by: Nicholas Piggin Signed-off-by: Michael Ellerman List of files: /linux-6.15/arch/powerpc/include/asm/opal.h