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path: root/drivers/thermal/intel/int340x_thermal/processor_thermal_mbox.c
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2024-12-02module: Convert symbol namespace to string literalPeter Zijlstra
Clean up the existing export namespace code along the same lines of commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo) to __section("foo")") and for the same reason, it is not desired for the namespace argument to be a macro expansion itself. Scripted using git grep -l -e MODULE_IMPORT_NS -e EXPORT_SYMBOL_NS | while read file; do awk -i inplace ' /^#define EXPORT_SYMBOL_NS/ { gsub(/__stringify\(ns\)/, "ns"); print; next; } /^#define MODULE_IMPORT_NS/ { gsub(/__stringify\(ns\)/, "ns"); print; next; } /MODULE_IMPORT_NS/ { $0 = gensub(/MODULE_IMPORT_NS\(([^)]*)\)/, "MODULE_IMPORT_NS(\"\\1\")", "g"); } /EXPORT_SYMBOL_NS/ { if ($0 ~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+),/) { if ($0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/ && $0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(\)/ && $0 !~ /^my/) { getline line; gsub(/[[:space:]]*\\$/, ""); gsub(/[[:space:]]/, "", line); $0 = $0 " " line; } $0 = gensub(/(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/, "\\1(\\2, \"\\3\")", "g"); } } { print }' $file; done Requested-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://mail.google.com/mail/u/2/#inbox/FMfcgzQXKWgMmjdFwwdsfgxzKpVHWPlc Acked-by: Greg KH <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2024-05-02thermal: intel: Add missing module descriptionSrinivas Pandruvada
Fix warnings displayed by "make W=1" build: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/thermal/intel/intel_soc_dts_iosf.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/thermal/intel/int340x_thermal/processor_thermal_rapl.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/thermal/intel/int340x_thermal/processor_thermal_mbox.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/thermal/intel/int340x_thermal/processor_thermal_wt_req.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/thermal/intel/int340x_thermal/processor_thermal_wt_hint.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/thermal/intel/int340x_thermal/processor_thermal_power_floor Reported-by: Andy Shevchenko <andriy.shevchenko@intel.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-09-14thermal: int340x: processor_thermal: Add interrupt configuration functionSrinivas Pandruvada
Some features like workload type prediction and power floor events require interrupt support to avoid polling. Here interrupts are enabled and disabled via sending mailbox commands. The mailbox command ID is 0x1E for read and 0x1F for write. The interrupt configuration will require mutex protection as it involves read-modify-write operation. Since mutex are already used in the mailbox read/write functions: send_mbox_write_cmd() and send_mbox_read_cmd(), there will be double locking. But, this can be avoided by moving mutexes from mailbox read/write processing functions to the callers: processor_thermal_send_mbox_[read|write]_cmd(). Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> [ rjw: Adjust subject, fix up computation ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-09-14thermal: int340x: processor_thermal: Move mailbox code to common moduleSrinivas Pandruvada
The processor thermal mailbox is used for workload type request and also in the processor thermal RFIM module. So, move the workload type request code to its own module from the current processor thermal mailbox module. processor_thermal_mailbox.c contains only mailbox read/write related source code. The source related to workload_types requests is moved to a module processor_thermal_wt_req.c. In addition - Rename PROC_THERMAL_FEATURE_MBOX to PROC_THERMAL_FEATURE_WT_REQ. - proc_thermal_mbox_add(), which adds workload type sysfs attribute group is renamed to proc_thermal_wt_req_add(). - proc_thermal_mbox_remove() is renamed to proc_thermal_wt_req_remove(). While here, resolve check patch warnings for 100 columns for only modified lines. No functional changes are expected. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-12-30thermal/drivers/int340x: Fix RFIM mailbox write commandsSumeet Pawnikar
The existing mail mechanism only supports writing of workload types. However, mailbox command for RFIM (cmd = 0x08) also requires write operation which is ignored. This results in failing to store RFI restriction. Fixint this requires enhancing mailbox writes for non workload commands too, so remove the check for MBOX_CMD_WORKLOAD_TYPE_WRITE in mailbox write to allow this other write commands to be supoorted. At the same time, however, we have to make sure that there is no impact on read commands, by avoiding to write anything into the mailbox data register. To properly implement that, add two separate functions for mbox read and write commands for the processor thermal workload command type. This helps to distinguish the read and write workload command types from each other while sending mbox commands. Fixes: 5d6fbc96bd36 ("thermal/drivers/int340x: processor_thermal: Export additional attributes") Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@intel.com> Cc: 5.14+ <stable@vger.kernel.org> # 5.14+ Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> [ rjw: Changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-11-12thermal: int340x: fix build on 32-bit targetsLinus Torvalds
Commit aeb58c860dc5 ("thermal/drivers/int340x: processor_thermal: Suppot 64 bit RFIM responses") started using 'readq()' to read 64-bit status responses from the int340x hardware. That's all fine and good, but on 32-bit targets a 64-bit 'readq()' is ambiguous, since it's no longer an atomic access. Some hardware might require 64-bit accesses, and other hardware might want low word first or high word first. It's quite likely that the driver isn't relevant in a 32-bit environment any more, and there's a patch floating around to just make it depend on X86_64, but let's make it buildable on x86-32 anyway. The driver previously just read the low 32 bits, so the hardware certainly is ok with 32-bit reads, and in a little-endian environment the low word first model is the natural one. So just add the include for the 'io-64-nonatomic-lo-hi.h' version. Fixes: aeb58c860dc5 ("thermal/drivers/int340x: processor_thermal: Suppot 64 bit RFIM responses") Reported-by: Jakub Kicinski <kuba@kernel.org> Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-11-04thermal/drivers/int340x: processor_thermal: Suppot 64 bit RFIM responsesSrinivas Pandruvada
Some of the RFIM mail box command returns 64 bit values. So enhance mailbox interface to return 64 bit values and use them for RFIM commands. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Fixes: 5d6fbc96bd36 ("thermal/drivers/int340x: processor_thermal: Export additional attributes") Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-06-11thermal/drivers/int340x: processor_thermal: Export mailbox interfaceSrinivas Pandruvada
Export the mailbox interface to be used by other modules. Also change command id and response from u8 to u32 data type. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20210517061441.1921901-2-srinivas.pandruvada@linux.intel.com
2020-12-10thermal: int340x: processor_thermal: Correct workload type nameSrinivas Pandruvada
Change "Burusty" to "bursty". Reported-by: Michael Larabel <Michael@phoronix.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20201210213324.2113041-1-srinivas.pandruvada@linux.intel.com
2020-12-10thermal: int340x: processor_thermal: Add mailbox driverSrinivas Pandruvada
Added processor thermal device mail box interface for workload hints setting. These hints will give indication to hardware to better manage power and thermals. The supported hints are: idle semi_active burusty sustained battery_life For example when the system is on battery, the hardware can be less aggressive in power ramp up. This will create an attribute group at /sys/bus/pci/devices/0000:00:04.0/workload_request This folder contains two attributes: workload_available_types : (RO): This shows available workload types workload_type: (RW) : Allows to set and get current workload type setting Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20201126171829.945969-4-srinivas.pandruvada@linux.intel.com