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platform/x86/amd/hsmp: Create hsmp/ directory This is in preparation to splitting ACPI and platform device drivers. Create and move hsmp specific code into its own directory, no logical changes. Signed-off-by: Suma Hegde <suma.hegde@amd.com> Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20241021111428.2676884-1-suma.hegde@amd.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-10-21 11:14:18 +00:00
# SPDX-License-Identifier: GPL-2.0-only
#
# AMD HSMP Driver
#
config AMD_HSMP
platform/x86/amd/hsmp: Create separate ACPI, plat and common drivers Separate the probes for HSMP ACPI and platform device drivers. Provide a Kconfig option to choose between ACPI or the platform device based driver. The common code which is the core part of the HSMP driver maintained at hsmp.c is guarded by AMD_HSMP config and is selected by these two driver configs. This will be built into separate hsmp_common.ko module and acpi as hsmp_acpi and plat as amd_hsmp respectively. Also add "|| COMPILE_TEST" clause in Kconfig to get build coverage for HSMP. Signed-off-by: Suma Hegde <suma.hegde@amd.com> Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com> Link: https://lore.kernel.org/r/20241021111428.2676884-8-suma.hegde@amd.com [ij: Fixed doc to use pre-formatted text for the ACPI dump.] Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-10-21 11:14:25 +00:00
tristate
menu "AMD HSMP Driver"
x86/amd_node, platform/x86/amd/hsmp: Have HSMP use SMN through AMD_NODE The HSMP interface is just an SMN interface with different offsets. Define an HSMP wrapper in the SMN code and have the HSMP platform driver use that rather than a local solution. Also, remove the "root" member from AMD_NB, since there are no more users of it. Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Carlos Bilbao <carlos.bilbao@kernel.org> Acked-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20250130-wip-x86-amd-nb-cleanup-v4-1-b5cc997e471b@amd.com
2025-01-30 19:48:55 +00:00
depends on AMD_NODE || COMPILE_TEST
platform/x86/amd/hsmp: Create separate ACPI, plat and common drivers Separate the probes for HSMP ACPI and platform device drivers. Provide a Kconfig option to choose between ACPI or the platform device based driver. The common code which is the core part of the HSMP driver maintained at hsmp.c is guarded by AMD_HSMP config and is selected by these two driver configs. This will be built into separate hsmp_common.ko module and acpi as hsmp_acpi and plat as amd_hsmp respectively. Also add "|| COMPILE_TEST" clause in Kconfig to get build coverage for HSMP. Signed-off-by: Suma Hegde <suma.hegde@amd.com> Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com> Link: https://lore.kernel.org/r/20241021111428.2676884-8-suma.hegde@amd.com [ij: Fixed doc to use pre-formatted text for the ACPI dump.] Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-10-21 11:14:25 +00:00
config AMD_HSMP_ACPI
tristate "AMD HSMP ACPI device driver"
depends on ACPI
platform/x86/amd/hsmp: fix building with CONFIG_HWMON=m When CONFIG_HWMON is built as a loadable module, the HSMP drivers cannot be built-in: ERROR: modpost: "hsmp_create_sensor" [drivers/platform/x86/amd/hsmp/amd_hsmp.ko] undefined! ERROR: modpost: "hsmp_create_sensor" [drivers/platform/x86/amd/hsmp/hsmp_acpi.ko] undefined! Enforce that through the usual Kconfig dependnecy trick. Fixes: 92c025db52bb ("platform/x86/amd/hsmp: Report power via hwmon sensors") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20250522144422.2824083-1-arnd@kernel.org Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2025-05-22 16:38:49 +02:00
depends on HWMON || !HWMON
platform/x86/amd/hsmp: Create separate ACPI, plat and common drivers Separate the probes for HSMP ACPI and platform device drivers. Provide a Kconfig option to choose between ACPI or the platform device based driver. The common code which is the core part of the HSMP driver maintained at hsmp.c is guarded by AMD_HSMP config and is selected by these two driver configs. This will be built into separate hsmp_common.ko module and acpi as hsmp_acpi and plat as amd_hsmp respectively. Also add "|| COMPILE_TEST" clause in Kconfig to get build coverage for HSMP. Signed-off-by: Suma Hegde <suma.hegde@amd.com> Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com> Link: https://lore.kernel.org/r/20241021111428.2676884-8-suma.hegde@amd.com [ij: Fixed doc to use pre-formatted text for the ACPI dump.] Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-10-21 11:14:25 +00:00
select AMD_HSMP
platform/x86/amd/hsmp: Create hsmp/ directory This is in preparation to splitting ACPI and platform device drivers. Create and move hsmp specific code into its own directory, no logical changes. Signed-off-by: Suma Hegde <suma.hegde@amd.com> Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20241021111428.2676884-1-suma.hegde@amd.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-10-21 11:14:18 +00:00
help
platform/x86/amd/hsmp: Create separate ACPI, plat and common drivers Separate the probes for HSMP ACPI and platform device drivers. Provide a Kconfig option to choose between ACPI or the platform device based driver. The common code which is the core part of the HSMP driver maintained at hsmp.c is guarded by AMD_HSMP config and is selected by these two driver configs. This will be built into separate hsmp_common.ko module and acpi as hsmp_acpi and plat as amd_hsmp respectively. Also add "|| COMPILE_TEST" clause in Kconfig to get build coverage for HSMP. Signed-off-by: Suma Hegde <suma.hegde@amd.com> Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com> Link: https://lore.kernel.org/r/20241021111428.2676884-8-suma.hegde@amd.com [ij: Fixed doc to use pre-formatted text for the ACPI dump.] Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-10-21 11:14:25 +00:00
Host System Management Port (HSMP) interface is a mailbox interface
between the x86 core and the System Management Unit (SMU) firmware.
platform/x86/amd/hsmp: Create hsmp/ directory This is in preparation to splitting ACPI and platform device drivers. Create and move hsmp specific code into its own directory, no logical changes. Signed-off-by: Suma Hegde <suma.hegde@amd.com> Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20241021111428.2676884-1-suma.hegde@amd.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-10-21 11:14:18 +00:00
The driver provides a way for user space tools to monitor and manage
platform/x86/amd/hsmp: Create separate ACPI, plat and common drivers Separate the probes for HSMP ACPI and platform device drivers. Provide a Kconfig option to choose between ACPI or the platform device based driver. The common code which is the core part of the HSMP driver maintained at hsmp.c is guarded by AMD_HSMP config and is selected by these two driver configs. This will be built into separate hsmp_common.ko module and acpi as hsmp_acpi and plat as amd_hsmp respectively. Also add "|| COMPILE_TEST" clause in Kconfig to get build coverage for HSMP. Signed-off-by: Suma Hegde <suma.hegde@amd.com> Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com> Link: https://lore.kernel.org/r/20241021111428.2676884-8-suma.hegde@amd.com [ij: Fixed doc to use pre-formatted text for the ACPI dump.] Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-10-21 11:14:25 +00:00
system management functionality on EPYC and MI300A server CPUs
from AMD.
This option supports ACPI based probing.
You may enable this, if your platform BIOS provides an ACPI object
as described in amd_hsmp.rst document.
platform/x86/amd/hsmp: Create hsmp/ directory This is in preparation to splitting ACPI and platform device drivers. Create and move hsmp specific code into its own directory, no logical changes. Signed-off-by: Suma Hegde <suma.hegde@amd.com> Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20241021111428.2676884-1-suma.hegde@amd.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-10-21 11:14:18 +00:00
platform/x86/amd/hsmp: Create separate ACPI, plat and common drivers Separate the probes for HSMP ACPI and platform device drivers. Provide a Kconfig option to choose between ACPI or the platform device based driver. The common code which is the core part of the HSMP driver maintained at hsmp.c is guarded by AMD_HSMP config and is selected by these two driver configs. This will be built into separate hsmp_common.ko module and acpi as hsmp_acpi and plat as amd_hsmp respectively. Also add "|| COMPILE_TEST" clause in Kconfig to get build coverage for HSMP. Signed-off-by: Suma Hegde <suma.hegde@amd.com> Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com> Link: https://lore.kernel.org/r/20241021111428.2676884-8-suma.hegde@amd.com [ij: Fixed doc to use pre-formatted text for the ACPI dump.] Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-10-21 11:14:25 +00:00
If you choose to compile this driver as a module the module will be
called hsmp_acpi.
config AMD_HSMP_PLAT
tristate "AMD HSMP platform device driver"
platform/x86/amd/hsmp: fix building with CONFIG_HWMON=m When CONFIG_HWMON is built as a loadable module, the HSMP drivers cannot be built-in: ERROR: modpost: "hsmp_create_sensor" [drivers/platform/x86/amd/hsmp/amd_hsmp.ko] undefined! ERROR: modpost: "hsmp_create_sensor" [drivers/platform/x86/amd/hsmp/hsmp_acpi.ko] undefined! Enforce that through the usual Kconfig dependnecy trick. Fixes: 92c025db52bb ("platform/x86/amd/hsmp: Report power via hwmon sensors") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20250522144422.2824083-1-arnd@kernel.org Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2025-05-22 16:38:49 +02:00
depends on HWMON || !HWMON
platform/x86/amd/hsmp: Create separate ACPI, plat and common drivers Separate the probes for HSMP ACPI and platform device drivers. Provide a Kconfig option to choose between ACPI or the platform device based driver. The common code which is the core part of the HSMP driver maintained at hsmp.c is guarded by AMD_HSMP config and is selected by these two driver configs. This will be built into separate hsmp_common.ko module and acpi as hsmp_acpi and plat as amd_hsmp respectively. Also add "|| COMPILE_TEST" clause in Kconfig to get build coverage for HSMP. Signed-off-by: Suma Hegde <suma.hegde@amd.com> Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com> Link: https://lore.kernel.org/r/20241021111428.2676884-8-suma.hegde@amd.com [ij: Fixed doc to use pre-formatted text for the ACPI dump.] Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-10-21 11:14:25 +00:00
select AMD_HSMP
help
platform/x86/amd/hsmp: Create hsmp/ directory This is in preparation to splitting ACPI and platform device drivers. Create and move hsmp specific code into its own directory, no logical changes. Signed-off-by: Suma Hegde <suma.hegde@amd.com> Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20241021111428.2676884-1-suma.hegde@amd.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-10-21 11:14:18 +00:00
Host System Management Port (HSMP) interface is a mailbox interface
between the x86 core and the System Management Unit (SMU) firmware.
platform/x86/amd/hsmp: Create separate ACPI, plat and common drivers Separate the probes for HSMP ACPI and platform device drivers. Provide a Kconfig option to choose between ACPI or the platform device based driver. The common code which is the core part of the HSMP driver maintained at hsmp.c is guarded by AMD_HSMP config and is selected by these two driver configs. This will be built into separate hsmp_common.ko module and acpi as hsmp_acpi and plat as amd_hsmp respectively. Also add "|| COMPILE_TEST" clause in Kconfig to get build coverage for HSMP. Signed-off-by: Suma Hegde <suma.hegde@amd.com> Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com> Link: https://lore.kernel.org/r/20241021111428.2676884-8-suma.hegde@amd.com [ij: Fixed doc to use pre-formatted text for the ACPI dump.] Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-10-21 11:14:25 +00:00
The driver provides a way for user space tools to monitor and manage
system management functionality on EPYC and MI300A server CPUs
from AMD.
This option supports platform device based probing.
You may enable this, if your platform BIOS does not provide
HSMP ACPI object.
platform/x86/amd/hsmp: Create hsmp/ directory This is in preparation to splitting ACPI and platform device drivers. Create and move hsmp specific code into its own directory, no logical changes. Signed-off-by: Suma Hegde <suma.hegde@amd.com> Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20241021111428.2676884-1-suma.hegde@amd.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-10-21 11:14:18 +00:00
If you choose to compile this driver as a module the module will be
called amd_hsmp.
platform/x86/amd/hsmp: Create separate ACPI, plat and common drivers Separate the probes for HSMP ACPI and platform device drivers. Provide a Kconfig option to choose between ACPI or the platform device based driver. The common code which is the core part of the HSMP driver maintained at hsmp.c is guarded by AMD_HSMP config and is selected by these two driver configs. This will be built into separate hsmp_common.ko module and acpi as hsmp_acpi and plat as amd_hsmp respectively. Also add "|| COMPILE_TEST" clause in Kconfig to get build coverage for HSMP. Signed-off-by: Suma Hegde <suma.hegde@amd.com> Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com> Link: https://lore.kernel.org/r/20241021111428.2676884-8-suma.hegde@amd.com [ij: Fixed doc to use pre-formatted text for the ACPI dump.] Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-10-21 11:14:25 +00:00
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