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authorMichal Wilczynski <michal.wilczynski@intel.com>2023-07-10 17:03:35 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2023-07-14 18:59:40 +0300
commit5ba30be7fd6e3fdff1e0b01f24173a5e6a3183b2 (patch)
treef857146feac27cb5deb529b2ff3304f7d3988646 /include/acpi
parentb9e8d0168a7a85e05d031130b247099018e2194e (diff)
downloadlinux-5ba30be7fd6e3fdff1e0b01f24173a5e6a3183b2.tar.xz
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>
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/proc_cap_intel.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/acpi/proc_cap_intel.h b/include/acpi/proc_cap_intel.h
index 57e5e2628abb..ddcdc41d6c3e 100644
--- a/include/acpi/proc_cap_intel.h
+++ b/include/acpi/proc_cap_intel.h
@@ -19,6 +19,7 @@
#define ACPI_PROC_CAP_C_C1_FFH (0x0100)
#define ACPI_PROC_CAP_C_C2C3_FFH (0x0200)
#define ACPI_PROC_CAP_SMP_P_HWCOORD (0x0800)
+#define ACPI_PROC_CAP_COLLAB_PROC_PERF (0x1000)
#define ACPI_PROC_CAP_EST_CAPABILITY_SMP (ACPI_PROC_CAP_SMP_C1PT | \
ACPI_PROC_CAP_C_C1_HALT | \