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>
44 lines
1003 B
C
44 lines
1003 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _VSEC_H
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#define _VSEC_H
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#include <linux/auxiliary_bus.h>
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#include <linux/bits.h>
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struct pci_dev;
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struct resource;
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enum intel_vsec_quirks {
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/* Watcher feature not supported */
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VSEC_QUIRK_NO_WATCHER = BIT(0),
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/* Crashlog feature not supported */
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VSEC_QUIRK_NO_CRASHLOG = BIT(1),
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/* Use shift instead of mask to read discovery table offset */
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VSEC_QUIRK_TABLE_SHIFT = BIT(2),
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/* DVSEC not present (provided in driver data) */
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VSEC_QUIRK_NO_DVSEC = BIT(3),
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};
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struct intel_vsec_device {
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struct auxiliary_device auxdev;
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struct pci_dev *pcidev;
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struct resource *resource;
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struct ida *ida;
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unsigned long quirks;
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int num_resources;
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};
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static inline struct intel_vsec_device *dev_to_ivdev(struct device *dev)
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{
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return container_of(dev, struct intel_vsec_device, auxdev.dev);
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}
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static inline struct intel_vsec_device *auxdev_to_ivdev(struct auxiliary_device *auxdev)
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{
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return container_of(auxdev, struct intel_vsec_device, auxdev);
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}
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#endif
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