This version includes the following changes:
- Displays SST-PP2 revision fields.
- Skips updating uncore frequency limits on newer generations of CPUs.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
On SST PP level switch, skip adjusting the uncore frequency limit and
allow the hardware to handle this on newer platforms.
As newer generations of CPUs have changed the extended family identifier,
use this identifier to exclude the update.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
This version has fix for:
- Display of die ID and optimize array size for multi package
systems.
- Fix build warning with cross compiler
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Even when there is no die exported by CPUID leaf 0x1F, the kernel version
after 6.9 will show non zero die_id in the sysfs. In that case maximum
die_id can still match maximum power domain ID. So the condition to check
if the power domain ID is same a die_id to prevent duplicate display
doesn't hold true.
The better condition is to check if the maximum die_id is more than the
maximum package_id. If the die_id is exposed by CPUID leaf 0x1F, the
maximum die_id will be more than maximum package_id.
With this change tracking of max_punit_id is not used, so remove storing
max_punit_id.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
In the function for_each_online_power_domain_in_set() to pick one CPU
from each power domain a three-dimensional array is used, which assumes
that a package contains multiple dies, that means the die_id from
/sys/devices/system/cpu/cpu0/topology/die_id is only local to package.
If it is not unique, still there will be no functional issues in the
current generation of products, but the MAX_DIE_PER_PACKAGE will need to
be increased for future products with many packages.
After kernel version 6.9 die ID is unique system wide not per package.
Even if the CPU topology has no dies, the ID will still increment across
package. In this case the die_id in package 0 will be 0 and die_id in
package 1 will be 1 in a 2-package system.
Since the die count must be same for packages, just count the number of
dies in package 0 and calculate die index from
/sys/devices/system/cpu/cpu0/topology/die_id which is only unique within
a package.
In this way the array size
"int cpus[MAX_PACKAGE_COUNT][MAX_DIE_PER_PACKAGE][MAX_PUNIT_PER_DIE]"
doesn't have to increase with increasing package count.
No functional change is expected.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
This version addresses one issue:
- Fix updating TRL MSR after SST-TF is disabled in auto mode.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
This version addresses issues with:
- Support of SST BF/TF support per level
- Increase number of CPUs displayed
- Present all TRL levels for turbo-freq
- Fix display for unsupported levels
- Support multiple dies
- Increase die count
- Change CPU display for non compute domain
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
SST BF and TF can be enabled/disabled per level. So check the current
level support from the mask of supported levels.
This change from a single level to mask for info.sst_tf_support and
info.sst_tf_support is indicated by API version change. Use as mask for
API version above 2. In this way there is no change in behavior when
running on older kernel with API version 2.
Since the tool can support now API version 3, update the supported API
version.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
During call to "intel-speed-select turbo-freq info" some junk values are
reported for unsupported levels. Initialize the structure fact_info with
0s, so that isst_fact_display_information() will skip "0" values in the
frequency.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
When the die id is same as punit compute die ID, treat them same. In this
case, when for_each_online_power_domain_in_set() is called, then don't
loop for each punit in a die. Just loop for all punits in a package.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This version addresses issues with:
- When CPU 0 hotplug is not possible, try cgroup v2 isolation
without any user input
- Fix turbo mode enable/disable swapped
- Sanitize command line integer and hex arguments
- Add more error messages
- Increase CPU count in one request
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
From kernel version 6.5, CPU 0 hotplug capability is deprecated.
If some SST profile doesn't have CPU 0, then it is no longer possible to
offline CPU 0. This means that user space threads will still run on
CPU 0.
To workaround this issue, use cgroup v2 isolation feature. Whenever there
/sys/devices/system/cpu/cpu0/online file is absent or open fails, isolate
CPU 0 via CPU cgroup v2 isolation. Also add a command line option to
force even if the /sys/devices/system/cpu/cpu0/online is present.
The previous commit "01bcb56f059e ("tools/power/x86/intel-speed-select:
Prevent CPU 0 offline") was just warning about this issue based on the
kernel version 6.5 and above. With this new approach, instead of warning
take action to mitigate the issue.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
With the increase in the CPU count, this count needs to be updated.
Increase max CPU count to 512.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
When core-power is getting enabled, if the feaure is not supported,
display error.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
The command for turbo-mode enable and disable is swapped. Fix that.
Previously turbo-mode enable was actually disabling and disable was
enabling.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
TRL (turbo ratio limit) argument is passed in hex string. Clarify that
in the help.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
If the command takes some integer arguments, make sure the command
contains only digits. Same for Hex arguments. Otherwise return error.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
This version addresses issues with:
- CPU count display for power domain != 0
- Support more than 8 sockets
- Error on max CPU count exceeds in one request
- Prevent trying CPU 0 hotplug for kernel version 6.5 or later
- Change mem-frequency display to max-mem-frequency
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Kernel 6.5 version deprecated CPU 0 hotplug. This will cause all
requests to fail to offline CPU 0. Check version number of kernel
and ignore CPU 0 hotplug request with debug aid to use cgroup
isolation feature for CPU 0.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
There is a limit on number of CPUs in one request. This is set to 256.
Currently tool silently ignores request for count over 256. Give an
error message to indicate this.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Fix CPU count display for power domain != 0. In the function
punit_id is always 0, so it never incremented cpu count for power
domain id != 0.
Update punit_id after call to update_punit_cpu_info() to what is
actually received from the kernel.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
This version addresses issues with core power configuration for
non CPU dies. Also address issue with JSON formatting of output.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
When core-power configuration or enabled is modified, this is only done
for compute dies. But the config must also be set to cores with no CPUs.
Without this the configuration is not affective.
On displaying config information, allow display for non compute dies
also.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Update tool and supported API version. This is the first version which
supports newer Xeon platforms with TPMI support.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
[srinivas.pandruvada@linux.intel.com: subject and changelog edits]
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
There are some differences compared to Sapphire Rapids. So, add a separate
API.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
On supported systems, it is possiible to isolate CPUs instead of
CPU online/offline. This is optional and can be specified using
-g option when running as daemon or in combination with -o option
for SST-PP level change.
CPU isolation doesn't isolate IRQs. So IRQs needs to be moved away
from isoolated CPUs. This can be done via IRQ sysfs or irqbalance daemon.
The IRQ balance daemon is also capable to parse thermal HFI messages to
move IRQs away from CPUS, which are supposed be isolated. But this
requires version released after July 2022.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
During perf level change cpuset is allocated but not freed.
Add free_cpu_set() in success and failure path.
Although this is not an issue, as the program will exit after
processing of online/offline, but for completeness add the
free_cpu_set().
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Some operations applies to cpu-power-domain only. Add check for cpu id
for these functions.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
If the new TDP level requetsted is same as the current TDP level, don't
call into driver to change level.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
[srinivas.pandruvada@linux.intel.com: changelog edits]
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Non-cpu power domain does not support cpu clos config.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Get punit core mapping information using format of MSR 0x54. Based
on the API version, decode is done using new format. The new format
also include a power domain ID. TPMI SST information is for each
power domain.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
In some cases, the output format may be different with different
api_version because of different capabilities or for backward
capabilities reason.
Introduce api_version() to get the api_version of the platform running.
No functional changes are expected.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
[srinivas.pandruvada@linux.intel.com: changelog edits]
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Platform specific code also needs to give debug output.
Introduce is_debug_enabled() for this purpose.
No functional changes are expected.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
[srinivas.pandruvada@linux.intel.com: changelog edits]
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Different api_version suggests different kernel driver used and
different interface is used to communication with the hardware.
Allow setting platform specific callbacks based on api_version.
Currently, all platforms with api_version 1 uses Mbox/MMIO interfaces.
No functional changes are expected.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
[srinivas.pandruvada@linux.intel.com: changelog edits]
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Allow platform specific implementation to adjust the uncore frequency.
No functional changes are expected.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
[srinivas.pandruvada@linux.intel.com: changelog edits]
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
isst_get_pbf_info_complete does nothing but just free the core_mask.
Remove the function and do free core_mask directly and free core mask in
the caller.
No functional changes are expected.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
[srinivas.pandruvada@linux.intel.com: changelog edits]
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
isst-core.c should contain generic core APIs only.
Platform specific implementations/configurations should be removed from
this file.
Introduce isst-core-mbox.c and move all mbox/mmio specific functions to
this file.
Introduce struct isst_platform_ops which contains a series of callbacks
that used by the core APIs but need platform specific implementation.
No functional changes are expected.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
[srinivas.pandruvada@linux.intel.com: changelog edits]
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
isst_fill_platform_info fills platform specific information.
And it is the proper place to set platform specific callbacks, as done in
next patch.
As the platform specific callbacks are needed in all cases, including
isst_print_platform_information.
The best way to achieve both is to invoke isst_fill_platform_info
unconditionally, and make isst_print_platform_information leverage the
data already filled.
No functional changes are expected.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Remove hardcoded DISP_FREQ_MULTIPLIER in the code and use
isst_get_disp_freq_multiplier() instead.
No functional changes are expected.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
isst-config.c should only contain generic code.
Move mbox functions which are platform specific code to isst-core.c.
As there are some platform specific parameters set via generic
application options, introduce isst_update_platform_param to pass these
parameters to platform specific code.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
The main thing done in isst_print_extended_platform_info is to get the
isst feature status by checking one of the power domains of the
platform.
This can be done using the for_each_online_power_domain_in_set()
function, which makes the code clean and easier to read.
No functional changes are expected.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
[srinivas.pandruvada@linux.intel.com: changelog edits]
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
for_each_online_package_in_set is actually used to invoke callback for
each power domain.
This is not a problem when there is a single power domain within a
package/die, but it does not reflect the truth in multi-punit case.
Rename for_each_online_package_in_set to
for_each_online_power_domain_in_set.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
New platforms may have more than 1 punit in a Package/Die, thus it can
have multiple power domains in a Package/Die. Package id and die id is not
sufficient to refer to a specific Power domain.
Introduce support for multi-punit per package/die.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
[srinivas.pandruvada@linux.intel.com: changelog edits]
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Punit id can also be retrieved from ISST_IF_GET_PHY_ID.
punit id is unique within a Package/Die, and together with Package id and
Die id, they can be used to refer to a specific SST power domain.
For current platforms, Punit id is always Zero. So no functional changes
are expected for the current platforms.
While here, prevent issuing IOCTL if the file /dev/isst_interface can't be
opened.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
[srinivas.pandruvada@linux.intel.com: changelog edits]
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
This release adds following change:
- Minor fixes for coverity static analysis
- Don't read cpufreq on offline CPUs
- SST turbo-freq enable on auto mode when user disables SMT from
kernel command line
- Fix uncore frequency display
- Set uncore frequency max/min limits on perf level change
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
When perf level is changed, uncore limits can change. Set the uncore
limits via Linux uncore sysfs, when user changes perf level with
-o option.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Need memory frequency quirk as Sapphire Rapids in Emerald Rapids.
So add Emerald Rapids CPU model check in is_spr_platform().
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
[srinivas.pandruvada@linux.intel.com: Subject, changelog and code edits]
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
