platform/x86/intel/tpmi: Process CPU package mapping

mainline inclusion
from mainline-v6.3-rc1
commit 762ed313
category: feature
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I8WOEC

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=762ed313574652ac604fb95dd601232a6e0320ef



-------------------------------------

There is one Intel Out-of-Band (OOB) PCI device per CPU package. Since
TPMI feature is exposed via OOB PCI device, there will be multiple
TPMI device instances on a multi CPU package system.

There are several PM features, which needs to associate APIC based CPU
package ID information to a TPMI instance. For example if Intel Speed
Select feature requires control of a CPU package, it needs to identify
right TPMI device instance.

There is one special TPMI ID (ID = 0x81) in the PFS. The MMIO
region of this TPMI ID points to a mapping table:
- PCI Bus ID
- PCI Device ID
- APIC based Package ID

This mapping information can be used by any PM feature driver which
requires mapping from a CPU package to a TPMI device instance.

Unlike other TPMI features, device node is not created for this feature
ID (0x81). Instead store the mapping information as platform data, which
is part of the per PCI device TPMI instance (struct intel_tpmi_info).
Later the TPMI feature drivers can get the mapping information using an
interface "tpmi_get_platform_data()"

Intel-SIG: commit 762ed313 platform/x86/intel/tpmi: Process CPU package mapping.
Backport Intel_tpmi base driver.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/20230202010738.2186174-6-srinivas.pandruvada@linux.intel.com


Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
[ Yingbao Jia: amend commit log ]
Signed-off-by: Yingbao Jia <yingbao.jia@intel.com>