Commit e92affc7 authored by David E. Box's avatar David E. Box Committed by Hans de Goede
Browse files

platform/x86/intel/vsec: Add PMT read callbacks 



Some PMT providers require device specific actions before their telemetry
can be read. Provide assignable PMT read callbacks to allow providers to
perform those actions.

Reviewed-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: default avatarMichael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: default avatarDavid E. Box <david.e.box@linux.intel.com>
Link: https://lore.kernel.org/r/20240725122346.4063913-3-michael.j.ruhl@intel.com


Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
parent fc9aef43

drivers/platform/x86/intel/vsec.c

+1 −0
Original line number Diff line number Diff line
@@ -212,6 +212,7 @@ static int intel_vsec_add_dev(struct pci_dev *pdev, struct intel_vsec_header *he 
	intel_vsec_dev->num_resources = header->num_entries;

	intel_vsec_dev->quirks = info->quirks;

	intel_vsec_dev->base_addr = info->base_addr;

	intel_vsec_dev->priv_data = info->priv_data;



	if (header->id == VSEC_ID_SDSI)

		intel_vsec_dev->ida = &intel_vsec_sdsi_ida;

include/linux/intel_vsec.h

+15 −0
Original line number Diff line number Diff line
@@ -67,10 +67,24 @@ enum intel_vsec_quirks { 
	VSEC_QUIRK_EARLY_HW     = BIT(4),

};



/**

 * struct pmt_callbacks - Callback infrastructure for PMT devices

 * ->read_telem() when specified, called by client driver to access PMT data (instead

 * of direct copy).

 * @pdev:  PCI device reference for the callback's use

 * @guid:  ID of data to acccss

 * @data:  buffer for the data to be copied

 * @count: size of buffer

 */

struct pmt_callbacks {

	int (*read_telem)(struct pci_dev *pdev, u32 guid, u64 *data, u32 count);

};



/**

 * struct intel_vsec_platform_info - Platform specific data

 * @parent:    parent device in the auxbus chain

 * @headers:   list of headers to define the PMT client devices to create

 * @priv_data: private data, usable by parent devices, currently a callback

 * @caps:      bitmask of PMT capabilities for the given headers

 * @quirks:    bitmask of VSEC device quirks

 * @base_addr: allow a base address to be specified (rather than derived)
@@ -78,6 +92,7 @@ enum intel_vsec_quirks { 
struct intel_vsec_platform_info {

	struct device *parent;

	struct intel_vsec_header **headers;

	void *priv_data;

	unsigned long caps;

	unsigned long quirks;

	u64 base_addr;