a3c8f906ed
Intel Platform Monitoring Technology (PMT) support is indicated by presence of an Intel defined PCIe Designated Vendor Specific Extended Capabilities (DVSEC) structure with a PMT specific ID. The current MFD implementation creates child devices for each PMT feature, currently telemetry, watcher, and crashlog. However DVSEC structures may also be used by Intel to indicate support for other features. The Out Of Band Management Services Module (OOBMSM) uses DVSEC to enumerate several features, including PMT. In order to support them it is necessary to modify the intel_pmt driver to handle the creation of the child devices more generically. To that end, modify the driver to create child devices for any VSEC/DVSEC features on supported devices (indicated by PCI ID). Additionally, move the implementation from MFD to the Auxiliary bus. VSEC/DVSEC features are really multifunctional PCI devices, not platform devices as MFD was designed for. Auxiliary bus gives more flexibility by allowing the definition of custom structures that can be shared between associated auxiliary devices and the parent device. Also, rename the driver from intel_pmt to intel_vsec to better reflect the purpose. This series also removes the current runtime pm support which was not complete to begin with. None of the current devices require runtime pm. However the support will be replaced when a device is added that requires it. Reviewed-by: Mark Gross <markgross@kernel.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: David E. Box <david.e.box@linux.intel.com> Link: https://lore.kernel.org/r/20211208015015.891275-4-david.e.box@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
40 lines
1.3 KiB
Text
40 lines
1.3 KiB
Text
# SPDX-License-Identifier: GPL-2.0-only
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#
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# Intel Platform Monitoring Technology drivers
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#
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config INTEL_PMT_CLASS
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tristate
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help
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The Intel Platform Monitoring Technology (PMT) class driver provides
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the basic sysfs interface and file hierarchy used by PMT devices.
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For more information, see:
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<file:Documentation/ABI/testing/sysfs-class-intel_pmt>
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To compile this driver as a module, choose M here: the module
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will be called intel_pmt_class.
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config INTEL_PMT_TELEMETRY
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tristate "Intel Platform Monitoring Technology (PMT) Telemetry driver"
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depends on INTEL_VSEC
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select INTEL_PMT_CLASS
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help
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The Intel Platform Monitory Technology (PMT) Telemetry driver provides
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access to hardware telemetry metrics on devices that support the
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feature.
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To compile this driver as a module, choose M here: the module
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will be called intel_pmt_telemetry.
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config INTEL_PMT_CRASHLOG
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tristate "Intel Platform Monitoring Technology (PMT) Crashlog driver"
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depends on INTEL_VSEC
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select INTEL_PMT_CLASS
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help
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The Intel Platform Monitoring Technology (PMT) crashlog driver provides
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access to hardware crashlog capabilities on devices that support the
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feature.
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To compile this driver as a module, choose M here: the module
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will be called intel_pmt_crashlog.
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