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Merge branches 'acpi-processor', 'acpi-tables', 'acpi-pnp' and 'acpi-maintainers'
Merge ACPI processor driver changes, ACPI table parser changes, ACPI device enumeration changes related to PNP and a MAINTAINERS update related to ACPI for 6.3-rc1: - Drop an unnecessary (void *) conversion from the ACPI processor driver (Zhou jie). - Modify the ACPI processor performance library code to use the "no limit" frequency QoS as appropriate and adjust the intel_pstate driver accordingly (Rafael Wysocki). - Add support for NBFT to the ACPI table parser (Stuart Hayes). - Introduce list of known non-PNP devices to avoid enumerating some of them as PNP devices (Rafael Wysocki). - Add x86 ACPI paths to the ACPI entry in MAINTAINERS to allow scripts to report the actual maintainers information (Rafael Wysocki). * acpi-processor: cpufreq: intel_pstate: Drop ACPI _PSS states table patching ACPI: processor: perflib: Avoid updating frequency QoS unnecessarily ACPI: processor: perflib: Use the "no limit" frequency QoS ACPI: processor: idle: Drop unnecessary (void *) conversion * acpi-tables: ACPI: tables: Add support for NBFT * acpi-pnp: ACPI: PNP: Introduce list of known non-PNP devices * acpi-maintainers: MAINTAINERS: Add x86 ACPI paths to the ACPI entry
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commit
9f4512c2ae
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@ -361,6 +361,8 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
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F: Documentation/ABI/testing/configfs-acpi
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F: Documentation/ABI/testing/sysfs-bus-acpi
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F: Documentation/firmware-guide/acpi/
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F: arch/x86/kernel/acpi/
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F: arch/x86/pci/acpi.c
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F: drivers/acpi/
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F: drivers/pci/*/*acpi*
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F: drivers/pci/*acpi*
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@ -20105,7 +20107,8 @@ L: linux-pm@vger.kernel.org
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S: Supported
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B: https://bugzilla.kernel.org
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F: Documentation/power/
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F: arch/x86/kernel/acpi/
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F: arch/x86/kernel/acpi/sleep*
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F: arch/x86/kernel/acpi/wakeup*
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F: drivers/base/power/
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F: include/linux/freezer.h
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F: include/linux/pm.h
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@ -348,10 +348,22 @@ static bool acpi_pnp_match(const char *idstr, const struct acpi_device_id **matc
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return false;
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}
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/*
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* If one of the device IDs below is present in the list of device IDs of a
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* given ACPI device object, the PNP scan handler will not attach to that
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* object, because there is a proper non-PNP driver in the kernel for the
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* device represented by it.
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*/
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static const struct acpi_device_id acpi_nonpnp_device_ids[] = {
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{"INTC1080"},
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{"INTC1081"},
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{""},
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};
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static int acpi_pnp_attach(struct acpi_device *adev,
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const struct acpi_device_id *id)
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{
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return 1;
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return !!acpi_match_device_ids(adev, acpi_nonpnp_device_ids);
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}
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static struct acpi_scan_handler acpi_pnp_handler = {
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@ -147,7 +147,7 @@ static void lapic_timer_check_state(int state, struct acpi_processor *pr,
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static void __lapic_timer_propagate_broadcast(void *arg)
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{
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struct acpi_processor *pr = (struct acpi_processor *) arg;
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struct acpi_processor *pr = arg;
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if (pr->power.timer_broadcast_on_state < INT_MAX)
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tick_broadcast_enable();
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@ -53,6 +53,8 @@ static int acpi_processor_get_platform_limit(struct acpi_processor *pr)
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{
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acpi_status status = 0;
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unsigned long long ppc = 0;
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s32 qos_value;
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int index;
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int ret;
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if (!pr)
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@ -72,17 +74,30 @@ static int acpi_processor_get_platform_limit(struct acpi_processor *pr)
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}
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}
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pr_debug("CPU %d: _PPC is %d - frequency %s limited\n", pr->id,
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(int)ppc, ppc ? "" : "not");
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index = ppc;
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pr->performance_platform_limit = (int)ppc;
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if (ppc >= pr->performance->state_count ||
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unlikely(!freq_qos_request_active(&pr->perflib_req)))
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if (pr->performance_platform_limit == index ||
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ppc >= pr->performance->state_count)
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return 0;
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ret = freq_qos_update_request(&pr->perflib_req,
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pr->performance->states[ppc].core_frequency * 1000);
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pr_debug("CPU %d: _PPC is %d - frequency %s limited\n", pr->id,
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index, index ? "is" : "is not");
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pr->performance_platform_limit = index;
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if (unlikely(!freq_qos_request_active(&pr->perflib_req)))
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return 0;
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/*
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* If _PPC returns 0, it means that all of the available states can be
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* used ("no limit").
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*/
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if (index == 0)
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qos_value = FREQ_QOS_MAX_DEFAULT_VALUE;
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else
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qos_value = pr->performance->states[index].core_frequency * 1000;
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ret = freq_qos_update_request(&pr->perflib_req, qos_value);
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if (ret < 0) {
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pr_warn("Failed to update perflib freq constraint: CPU%d (%d)\n",
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pr->id, ret);
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@ -166,9 +181,16 @@ void acpi_processor_ppc_init(struct cpufreq_policy *policy)
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if (!pr)
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continue;
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/*
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* Reset performance_platform_limit in case there is a stale
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* value in it, so as to make it match the "no limit" QoS value
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* below.
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*/
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pr->performance_platform_limit = 0;
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ret = freq_qos_add_request(&policy->constraints,
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&pr->perflib_req,
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FREQ_QOS_MAX, INT_MAX);
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&pr->perflib_req, FREQ_QOS_MAX,
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FREQ_QOS_MAX_DEFAULT_VALUE);
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if (ret < 0)
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pr_err("Failed to add freq constraint for CPU%d (%d)\n",
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cpu, ret);
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@ -555,7 +555,8 @@ static const char table_sigs[][ACPI_NAMESEG_SIZE] __initconst = {
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ACPI_SIG_WDDT, ACPI_SIG_WDRT, ACPI_SIG_DSDT, ACPI_SIG_FADT,
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ACPI_SIG_PSDT, ACPI_SIG_RSDT, ACPI_SIG_XSDT, ACPI_SIG_SSDT,
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ACPI_SIG_IORT, ACPI_SIG_NFIT, ACPI_SIG_HMAT, ACPI_SIG_PPTT,
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ACPI_SIG_NHLT, ACPI_SIG_AEST, ACPI_SIG_CEDT, ACPI_SIG_AGDI };
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ACPI_SIG_NHLT, ACPI_SIG_AEST, ACPI_SIG_CEDT, ACPI_SIG_AGDI,
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ACPI_SIG_NBFT };
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#define ACPI_HEADER_SIZE sizeof(struct acpi_table_header)
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@ -452,20 +452,6 @@ static void intel_pstate_init_acpi_perf_limits(struct cpufreq_policy *policy)
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(u32) cpu->acpi_perf_data.states[i].control);
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}
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/*
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* The _PSS table doesn't contain whole turbo frequency range.
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* This just contains +1 MHZ above the max non turbo frequency,
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* with control value corresponding to max turbo ratio. But
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* when cpufreq set policy is called, it will call with this
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* max frequency, which will cause a reduced performance as
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* this driver uses real max turbo frequency as the max
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* frequency. So correct this frequency in _PSS table to
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* correct max turbo frequency based on the turbo state.
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* Also need to convert to MHz as _PSS freq is in MHz.
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*/
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if (!global.turbo_disabled)
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cpu->acpi_perf_data.states[0].core_frequency =
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policy->cpuinfo.max_freq / 1000;
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cpu->valid_pss_table = true;
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pr_debug("_PPC limits will be enforced\n");
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@ -50,6 +50,8 @@
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#define ACPI_SIG_S3PT "S3PT" /* S3 Performance (sub)Table */
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#define ACPI_SIG_PCCS "PCC" /* PCC Shared Memory Region */
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#define ACPI_SIG_NBFT "NBFT" /* NVMe Boot Firmware Table */
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/* Reserved table signatures */
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#define ACPI_SIG_MATR "MATR" /* Memory Address Translation Table */
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