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linux/include/acpi/proc_cap_intel.h

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ACPI: processor: Rename ACPI_PDC symbols The prefix in the names of the ACPI_PDC symbols suggests that they are only relevant for _PDC, but in fact they can also be used in the _OSC. Change that prefix to a more generic ACPI_PROC_CAP that will better reflect the purpose of those symbols as they represent bits in a general processor capabilities buffer. Rename pdc_intel.h to proc_cap_intel.h to follow the change of the symbol name prefix. No intentional functional impact. Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Michal Wilczynski <michal.wilczynski@intel.com> [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-07-10 14:03:32 +00:00
/* SPDX-License-Identifier: GPL-2.0 */
/* Vendor specific processor capabilities bit definition
* for Intel processors. Those bits are used to convey OSPM
* power management capabilities to the platform.
*/
#ifndef __PROC_CAP_INTEL_H__
#define __PROC_CAP_INTEL_H__
#define ACPI_PROC_CAP_P_FFH (0x0001)
#define ACPI_PROC_CAP_C_C1_HALT (0x0002)
#define ACPI_PROC_CAP_T_FFH (0x0004)
#define ACPI_PROC_CAP_SMP_C1PT (0x0008)
#define ACPI_PROC_CAP_SMP_C2C3 (0x0010)
#define ACPI_PROC_CAP_SMP_P_SWCOORD (0x0020)
#define ACPI_PROC_CAP_SMP_C_SWCOORD (0x0040)
#define ACPI_PROC_CAP_SMP_T_SWCOORD (0x0080)
#define ACPI_PROC_CAP_C_C1_FFH (0x0100)
#define ACPI_PROC_CAP_C_C2C3_FFH (0x0200)
#define ACPI_PROC_CAP_SMP_P_HWCOORD (0x0800)
ACPI: processor: Introduce acpi_processor_osc() The processor _OSC method is already used for a workaround introduced in commit a21211672c9a ("ACPI / processor: Request native thermal interrupt handling via _OSC"), but in accordance with ACPI 6.5 (and earlier), it should be used for negotiating all of the processor capabilities instead of _PDC (which has been deprecated since ACPI 3.0 and got removed from ACPI 6.5 entirely). Create a new callback function called acpi_processor_osc() to be invoked for every processor object and processor device in the ACPI namespace, in analogy with the already existing acpi_hwp_native_thermal_lvt_osc(). Make this function implement the workaround mentioned above and convey all of the OSPM processor support information to the platform firmware by setting all of the appropriate processor capabilities bits before evaluating _OSC for the given processor. For this purpose, make it call arch_acpi_set_proc_cap_bits() and modify the latter to set ACPI_PROC_CAP_COLLAB_PROC_PERF along with the other processor capabilities bits. Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Michal Wilczynski <michal.wilczynski@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> [ rjw: Subject and changelog edits, whitespace fixup ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-07-10 14:03:35 +00:00
#define ACPI_PROC_CAP_COLLAB_PROC_PERF (0x1000)
ACPI: processor: Rename ACPI_PDC symbols The prefix in the names of the ACPI_PDC symbols suggests that they are only relevant for _PDC, but in fact they can also be used in the _OSC. Change that prefix to a more generic ACPI_PROC_CAP that will better reflect the purpose of those symbols as they represent bits in a general processor capabilities buffer. Rename pdc_intel.h to proc_cap_intel.h to follow the change of the symbol name prefix. No intentional functional impact. Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Michal Wilczynski <michal.wilczynski@intel.com> [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2023-07-10 14:03:32 +00:00
#define ACPI_PROC_CAP_EST_CAPABILITY_SMP (ACPI_PROC_CAP_SMP_C1PT | \
ACPI_PROC_CAP_C_C1_HALT | \
ACPI_PROC_CAP_P_FFH)
#define ACPI_PROC_CAP_EST_CAPABILITY_SWSMP (ACPI_PROC_CAP_SMP_C1PT | \
ACPI_PROC_CAP_C_C1_HALT | \
ACPI_PROC_CAP_SMP_P_SWCOORD | \
ACPI_PROC_CAP_SMP_P_HWCOORD | \
ACPI_PROC_CAP_P_FFH)
#define ACPI_PROC_CAP_C_CAPABILITY_SMP (ACPI_PROC_CAP_SMP_C2C3 | \
ACPI_PROC_CAP_SMP_C1PT | \
ACPI_PROC_CAP_C_C1_HALT | \
ACPI_PROC_CAP_C_C1_FFH | \
ACPI_PROC_CAP_C_C2C3_FFH)
#endif /* __PROC_CAP_INTEL_H__ */
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