On Fri, Apr 22, 2022 at 09:43:39PM +0700, Quan Nguyen wrote: > On 22/04/2022 13:20, Greg Kroah-Hartman wrote: > > On Fri, Apr 22, 2022 at 09:46:47AM +0700, Quan Nguyen wrote: > > > This commit adds Ampere's SMpro error monitor driver for monitoring > > > and reporting RAS-related errors as reported by SMpro co-processor > > > found on Ampere's Altra processor family. > > > > > > Signed-off-by: Quan Nguyen <quan@xxxxxxxxxxxxxxxxxxxxxx> > > > --- > > > Changes in v8: > > > + Update wording for SMPRO_ERRMON on Kconfig file [Quan] > > > + Avoid uninitialized variable use [kernel test robot] > > > + Switch to use sysfs_emit() [Greg] > > > + Make sysfs to return single value [Greg] > > > + Change errors_* sysfs to error_* [Quan] > > > + Add overflow_[core|mem|pcie|other]_[ce|ue] sysfs to report > > > overflow status of each type of HW errors [Quan] > > > + Add some minor refactor [Quan] > > > > > > Changes in v7: > > > + Remove regmap_acquire/release_lock(), read_i2c_block_data() [Quan] > > > + Use regmap_noinc_read() instead of errmon_read_block() [Quan] > > > + Validate number of errors before read [Quan] > > > + Fix wrong return type of *_show() function [kernel test robot] > > > + Adjust patch order to avoid dependence with smpro-mfd [Lee Jones] > > > + Use pointer instead of stack memory [Quan] > > > > > > Changes in v6: > > > + First introduced in v6 [Quan] > > > > > > drivers/misc/Kconfig | 12 + > > > drivers/misc/Makefile | 1 + > > > drivers/misc/smpro-errmon.c | 477 ++++++++++++++++++++++++++++++++++++ > > > 3 files changed, 490 insertions(+) > > > create mode 100644 drivers/misc/smpro-errmon.c > > > > > > diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig > > > index 41d2bb0ae23a..9fbe6797c440 100644 > > > --- a/drivers/misc/Kconfig > > > +++ b/drivers/misc/Kconfig > > > @@ -176,6 +176,18 @@ config SGI_XP > > > this feature will allow for direct communication between SSIs > > > based on a network adapter and DMA messaging. > > > +config SMPRO_ERRMON > > > + tristate "Ampere Computing SMPro error monitor driver" > > > + depends on MFD_SMPRO || COMPILE_TEST > > > + help > > > + Say Y here to get support for the SMpro error monitor function > > > + provided by Ampere Computing's Altra and Altra Max SoCs. Upon > > > + loading, the driver creates sysfs files which can be use to gather > > > + multiple HW error data reported via read and write system calls. > > > + > > > + To compile this driver as a module, say M here. The driver will be > > > + called smpro-errmon. > > > + > > > config CS5535_MFGPT > > > tristate "CS5535/CS5536 Geode Multi-Function General Purpose Timer (MFGPT) support" > > > depends on MFD_CS5535 > > > diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile > > > index 70e800e9127f..483308a6e113 100644 > > > --- a/drivers/misc/Makefile > > > +++ b/drivers/misc/Makefile > > > @@ -23,6 +23,7 @@ obj-$(CONFIG_ENCLOSURE_SERVICES) += enclosure.o > > > obj-$(CONFIG_KGDB_TESTS) += kgdbts.o > > > obj-$(CONFIG_SGI_XP) += sgi-xp/ > > > obj-$(CONFIG_SGI_GRU) += sgi-gru/ > > > +obj-$(CONFIG_SMPRO_ERRMON) += smpro-errmon.o > > > obj-$(CONFIG_CS5535_MFGPT) += cs5535-mfgpt.o > > > obj-$(CONFIG_GEHC_ACHC) += gehc-achc.o > > > obj-$(CONFIG_HP_ILO) += hpilo.o > > > diff --git a/drivers/misc/smpro-errmon.c b/drivers/misc/smpro-errmon.c > > > new file mode 100644 > > > index 000000000000..df7d8fc4ff3f > > > --- /dev/null > > > +++ b/drivers/misc/smpro-errmon.c > > > @@ -0,0 +1,477 @@ > > > +// SPDX-License-Identifier: GPL-2.0+ > > > > Are you sure you mean "or any later version"? I have to ask. > > > > Thank Greg for the review. > > Will change all to SPDX-License-Identifier: GPL-2.0-or-later in next > version. That is not what I am asking (the SPDX tag format). I mean, do you really mean "or later" for your license as that is not the license of the kernel overall? If so, wonderful, but I have to ask that as your legal group needs to be aware of it, sorry. thanks, greg k-h
