diff options
| author | David E. Box <[email protected]> | 2024-07-25 08:23:41 -0400 |
|---|---|---|
| committer | Hans de Goede <[email protected]> | 2024-08-12 16:21:31 +0200 |
| commit | e92affc74cd8624a548b380af7364be037adef35 (patch) | |
| tree | cf2cf4546ac25891898b12041615f28b1bc4a370 | |
| parent | fc9aef4382c02774662da3d7e1de8ba224e04f80 (diff) | |
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: Ilpo Järvinen <[email protected]>
Reviewed-by: Michael J. Ruhl <[email protected]>
Signed-off-by: David E. Box <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Hans de Goede <[email protected]>
| -rw-r--r-- | drivers/platform/x86/intel/vsec.c | 1 | ||||
| -rw-r--r-- | include/linux/intel_vsec.h | 15 |
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/platform/x86/intel/vsec.c b/drivers/platform/x86/intel/vsec.c index 2b46807f868b..7b5cc9993974 100644 --- a/drivers/platform/x86/intel/vsec.c +++ b/drivers/platform/x86/intel/vsec.c @@ -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; diff --git a/include/linux/intel_vsec.h b/include/linux/intel_vsec.h index 6495e37c9079..11ee185566c3 100644 --- a/include/linux/intel_vsec.h +++ b/include/linux/intel_vsec.h @@ -68,9 +68,23 @@ enum intel_vsec_quirks { }; /** + * 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; |