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[CPUFREQ] the overdue removal of X86_SPEEDSTEP_CENTRINO_ACPI
This patch contains the overdue removal of X86_SPEEDSTEP_CENTRINO_ACPI. Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Dave Jones <davej@redhat.com>
This commit is contained in:
Adrian Bunk
Dave Jones
parent
905497c4b2
commit
68485695e5
@ -196,28 +196,6 @@ Who: Adrian Bunk <bunk@stusta.de>
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---------------------------
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What: ACPI hooks (X86_SPEEDSTEP_CENTRINO_ACPI) in speedstep-centrino driver
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When: December 2006
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Why: Speedstep-centrino driver with ACPI hooks and acpi-cpufreq driver are
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functionally very much similar. They talk to ACPI in same way. Only
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difference between them is the way they do frequency transitions.
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One uses MSRs and the other one uses IO ports. Functionaliy of
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speedstep_centrino with ACPI hooks is now merged into acpi-cpufreq.
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That means one common driver will support all Intel Enhanced Speedstep
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capable CPUs. That means less confusion over name of
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speedstep-centrino driver (with that driver supposed to be used on
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non-centrino platforms). That means less duplication of code and
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less maintenance effort and no possibility of these two drivers
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going out of sync.
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Current users of speedstep_centrino with ACPI hooks are requested to
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switch over to acpi-cpufreq driver. speedstep-centrino will continue
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to work using older non-ACPI static table based scheme even after this
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date.
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Who: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
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---------------------------
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What: /sys/firmware/acpi/namespace
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When: 2.6.21
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Why: The ACPI namespace is effectively the symbol list for
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@ -116,7 +116,7 @@ config X86_GX_SUSPMOD
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config X86_SPEEDSTEP_CENTRINO
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tristate "Intel Enhanced SpeedStep"
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select CPU_FREQ_TABLE
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select X86_SPEEDSTEP_CENTRINO_TABLE if (!X86_SPEEDSTEP_CENTRINO_ACPI)
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select X86_SPEEDSTEP_CENTRINO_TABLE
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help
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This adds the CPUFreq driver for Enhanced SpeedStep enabled
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mobile CPUs. This means Intel Pentium M (Centrino) CPUs. However,
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@ -128,20 +128,6 @@ config X86_SPEEDSTEP_CENTRINO
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If in doubt, say N.
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config X86_SPEEDSTEP_CENTRINO_ACPI
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bool "Use ACPI tables to decode valid frequency/voltage (deprecated)"
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depends on X86_SPEEDSTEP_CENTRINO && ACPI_PROCESSOR
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depends on !(X86_SPEEDSTEP_CENTRINO = y && ACPI_PROCESSOR = m)
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help
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This is deprecated and this functionality is now merged into
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acpi_cpufreq (X86_ACPI_CPUFREQ). Use that driver instead of
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speedstep_centrino.
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Use primarily the information provided in the BIOS ACPI tables
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to determine valid CPU frequency and voltage pairings. It is
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required for the driver to work on non-Banias CPUs.
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If in doubt, say Y.
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config X86_SPEEDSTEP_CENTRINO_TABLE
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bool "Built-in tables for Banias CPUs"
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depends on X86_SPEEDSTEP_CENTRINO
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@ -237,7 +223,7 @@ comment "shared options"
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config X86_ACPI_CPUFREQ_PROC_INTF
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bool "/proc/acpi/processor/../performance interface (deprecated)"
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depends on PROC_FS
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depends on X86_ACPI_CPUFREQ || X86_SPEEDSTEP_CENTRINO_ACPI || X86_POWERNOW_K7_ACPI || X86_POWERNOW_K8_ACPI
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depends on X86_ACPI_CPUFREQ || X86_POWERNOW_K7_ACPI || X86_POWERNOW_K8_ACPI
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help
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This enables the deprecated /proc/acpi/processor/../performance
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interface. While it is helpful for debugging, the generic,
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@ -21,12 +21,6 @@
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#include <linux/delay.h>
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#include <linux/compiler.h>
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#ifdef CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI
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#include <linux/acpi.h>
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#include <linux/dmi.h>
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#include <acpi/processor.h>
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#endif
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#include <asm/msr.h>
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#include <asm/processor.h>
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#include <asm/cpufeature.h>
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@ -257,9 +251,7 @@ static int centrino_cpu_init_table(struct cpufreq_policy *policy)
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/* Matched a non-match */
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dprintk("no table support for CPU model \"%s\"\n",
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cpu->x86_model_id);
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#ifndef CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI
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dprintk("try compiling with CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI enabled\n");
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#endif
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dprintk("try using the acpi-cpufreq driver\n");
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return -ENOENT;
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}
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@ -346,213 +338,6 @@ static unsigned int get_cur_freq(unsigned int cpu)
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}
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#ifdef CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI
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static struct acpi_processor_performance *acpi_perf_data[NR_CPUS];
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/*
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* centrino_cpu_early_init_acpi - Do the preregistering with ACPI P-States
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* library
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*
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* Before doing the actual init, we need to do _PSD related setup whenever
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* supported by the BIOS. These are handled by this early_init routine.
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*/
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static int centrino_cpu_early_init_acpi(void)
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{
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unsigned int i, j;
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struct acpi_processor_performance *data;
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for_each_possible_cpu(i) {
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data = kzalloc(sizeof(struct acpi_processor_performance),
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GFP_KERNEL);
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if (!data) {
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for_each_possible_cpu(j) {
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kfree(acpi_perf_data[j]);
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acpi_perf_data[j] = NULL;
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}
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return (-ENOMEM);
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}
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acpi_perf_data[i] = data;
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}
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acpi_processor_preregister_performance(acpi_perf_data);
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return 0;
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}
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#ifdef CONFIG_SMP
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/*
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* Some BIOSes do SW_ANY coordination internally, either set it up in hw
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* or do it in BIOS firmware and won't inform about it to OS. If not
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* detected, this has a side effect of making CPU run at a different speed
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* than OS intended it to run at. Detect it and handle it cleanly.
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*/
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static int bios_with_sw_any_bug;
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static int sw_any_bug_found(struct dmi_system_id *d)
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{
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bios_with_sw_any_bug = 1;
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return 0;
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}
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static struct dmi_system_id sw_any_bug_dmi_table[] = {
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{
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.callback = sw_any_bug_found,
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.ident = "Supermicro Server X6DLP",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Supermicro"),
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DMI_MATCH(DMI_BIOS_VERSION, "080010"),
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DMI_MATCH(DMI_PRODUCT_NAME, "X6DLP"),
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},
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},
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{ }
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};
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#endif
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/*
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* centrino_cpu_init_acpi - register with ACPI P-States library
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*
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* Register with the ACPI P-States library (part of drivers/acpi/processor.c)
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* in order to determine correct frequency and voltage pairings by reading
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* the _PSS of the ACPI DSDT or SSDT tables.
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*/
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static int centrino_cpu_init_acpi(struct cpufreq_policy *policy)
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{
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unsigned long cur_freq;
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int result = 0, i;
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unsigned int cpu = policy->cpu;
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struct acpi_processor_performance *p;
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p = acpi_perf_data[cpu];
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/* register with ACPI core */
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if (acpi_processor_register_performance(p, cpu)) {
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dprintk(PFX "obtaining ACPI data failed\n");
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return -EIO;
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}
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policy->shared_type = p->shared_type;
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/*
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* Will let policy->cpus know about dependency only when software
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* coordination is required.
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*/
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if (policy->shared_type == CPUFREQ_SHARED_TYPE_ALL ||
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policy->shared_type == CPUFREQ_SHARED_TYPE_ANY) {
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policy->cpus = p->shared_cpu_map;
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}
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#ifdef CONFIG_SMP
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dmi_check_system(sw_any_bug_dmi_table);
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if (bios_with_sw_any_bug && cpus_weight(policy->cpus) == 1) {
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policy->shared_type = CPUFREQ_SHARED_TYPE_ALL;
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policy->cpus = cpu_core_map[cpu];
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}
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#endif
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/* verify the acpi_data */
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if (p->state_count <= 1) {
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dprintk("No P-States\n");
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result = -ENODEV;
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goto err_unreg;
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}
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if ((p->control_register.space_id != ACPI_ADR_SPACE_FIXED_HARDWARE) ||
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(p->status_register.space_id != ACPI_ADR_SPACE_FIXED_HARDWARE)) {
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dprintk("Invalid control/status registers (%x - %x)\n",
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p->control_register.space_id, p->status_register.space_id);
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result = -EIO;
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goto err_unreg;
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}
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for (i=0; i<p->state_count; i++) {
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if ((p->states[i].control & INTEL_MSR_RANGE) !=
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(p->states[i].status & INTEL_MSR_RANGE)) {
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dprintk("Different MSR bits in control (%llu) and status (%llu)\n",
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p->states[i].control, p->states[i].status);
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result = -EINVAL;
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goto err_unreg;
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}
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if (!p->states[i].core_frequency) {
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dprintk("Zero core frequency for state %u\n", i);
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result = -EINVAL;
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goto err_unreg;
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}
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if (p->states[i].core_frequency > p->states[0].core_frequency) {
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dprintk("P%u has larger frequency (%llu) than P0 (%llu), skipping\n", i,
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p->states[i].core_frequency, p->states[0].core_frequency);
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p->states[i].core_frequency = 0;
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continue;
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}
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}
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centrino_model[cpu] = kzalloc(sizeof(struct cpu_model), GFP_KERNEL);
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if (!centrino_model[cpu]) {
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result = -ENOMEM;
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goto err_unreg;
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}
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centrino_model[cpu]->model_name=NULL;
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centrino_model[cpu]->max_freq = p->states[0].core_frequency * 1000;
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centrino_model[cpu]->op_points = kmalloc(sizeof(struct cpufreq_frequency_table) *
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(p->state_count + 1), GFP_KERNEL);
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if (!centrino_model[cpu]->op_points) {
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result = -ENOMEM;
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goto err_kfree;
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}
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for (i=0; i<p->state_count; i++) {
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centrino_model[cpu]->op_points[i].index = p->states[i].control & INTEL_MSR_RANGE;
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centrino_model[cpu]->op_points[i].frequency = p->states[i].core_frequency * 1000;
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dprintk("adding state %i with frequency %u and control value %04x\n",
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i, centrino_model[cpu]->op_points[i].frequency, centrino_model[cpu]->op_points[i].index);
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}
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centrino_model[cpu]->op_points[p->state_count].frequency = CPUFREQ_TABLE_END;
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cur_freq = get_cur_freq(cpu);
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for (i=0; i<p->state_count; i++) {
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if (!p->states[i].core_frequency) {
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dprintk("skipping state %u\n", i);
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centrino_model[cpu]->op_points[i].frequency = CPUFREQ_ENTRY_INVALID;
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continue;
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}
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if (extract_clock(centrino_model[cpu]->op_points[i].index, cpu, 0) !=
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(centrino_model[cpu]->op_points[i].frequency)) {
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dprintk("Invalid encoded frequency (%u vs. %u)\n",
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extract_clock(centrino_model[cpu]->op_points[i].index, cpu, 0),
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centrino_model[cpu]->op_points[i].frequency);
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result = -EINVAL;
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goto err_kfree_all;
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}
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if (cur_freq == centrino_model[cpu]->op_points[i].frequency)
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p->state = i;
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}
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/* notify BIOS that we exist */
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acpi_processor_notify_smm(THIS_MODULE);
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printk("speedstep-centrino with X86_SPEEDSTEP_CENTRINO_ACPI "
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"config is deprecated.\n "
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"Use X86_ACPI_CPUFREQ (acpi-cpufreq) instead.\n" );
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return 0;
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err_kfree_all:
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kfree(centrino_model[cpu]->op_points);
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err_kfree:
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kfree(centrino_model[cpu]);
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err_unreg:
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acpi_processor_unregister_performance(p, cpu);
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dprintk(PFX "invalid ACPI data\n");
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return (result);
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}
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#else
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static inline int centrino_cpu_init_acpi(struct cpufreq_policy *policy) { return -ENODEV; }
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static inline int centrino_cpu_early_init_acpi(void) { return 0; }
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#endif
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static int centrino_cpu_init(struct cpufreq_policy *policy)
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{
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struct cpuinfo_x86 *cpu = &cpu_data[policy->cpu];
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@ -568,27 +353,25 @@ static int centrino_cpu_init(struct cpufreq_policy *policy)
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if (cpu_has(cpu, X86_FEATURE_CONSTANT_TSC))
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centrino_driver.flags |= CPUFREQ_CONST_LOOPS;
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if (centrino_cpu_init_acpi(policy)) {
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if (policy->cpu != 0)
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return -ENODEV;
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if (policy->cpu != 0)
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return -ENODEV;
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for (i = 0; i < N_IDS; i++)
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if (centrino_verify_cpu_id(cpu, &cpu_ids[i]))
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break;
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for (i = 0; i < N_IDS; i++)
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if (centrino_verify_cpu_id(cpu, &cpu_ids[i]))
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break;
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if (i != N_IDS)
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centrino_cpu[policy->cpu] = &cpu_ids[i];
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if (i != N_IDS)
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centrino_cpu[policy->cpu] = &cpu_ids[i];
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if (!centrino_cpu[policy->cpu]) {
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dprintk("found unsupported CPU with "
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"Enhanced SpeedStep: send /proc/cpuinfo to "
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MAINTAINER "\n");
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return -ENODEV;
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}
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if (!centrino_cpu[policy->cpu]) {
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dprintk("found unsupported CPU with "
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"Enhanced SpeedStep: send /proc/cpuinfo to "
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MAINTAINER "\n");
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return -ENODEV;
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}
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if (centrino_cpu_init_table(policy)) {
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return -ENODEV;
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}
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if (centrino_cpu_init_table(policy)) {
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return -ENODEV;
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}
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/* Check to see if Enhanced SpeedStep is enabled, and try to
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@ -634,20 +417,6 @@ static int centrino_cpu_exit(struct cpufreq_policy *policy)
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cpufreq_frequency_table_put_attr(cpu);
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#ifdef CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI
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if (!centrino_model[cpu]->model_name) {
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static struct acpi_processor_performance *p;
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if (acpi_perf_data[cpu]) {
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p = acpi_perf_data[cpu];
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dprintk("unregistering and freeing ACPI data\n");
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acpi_processor_unregister_performance(p, cpu);
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kfree(centrino_model[cpu]->op_points);
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kfree(centrino_model[cpu]);
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}
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}
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#endif
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centrino_model[cpu] = NULL;
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return 0;
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@ -849,25 +618,12 @@ static int __init centrino_init(void)
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if (!cpu_has(cpu, X86_FEATURE_EST))
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return -ENODEV;
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centrino_cpu_early_init_acpi();
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return cpufreq_register_driver(¢rino_driver);
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}
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static void __exit centrino_exit(void)
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{
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#ifdef CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI
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unsigned int j;
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#endif
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cpufreq_unregister_driver(¢rino_driver);
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#ifdef CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI
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for_each_possible_cpu(j) {
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kfree(acpi_perf_data[j]);
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acpi_perf_data[j] = NULL;
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}
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#endif
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}
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MODULE_AUTHOR ("Jeremy Fitzhardinge <jeremy@goop.org>");
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@ -48,10 +48,6 @@ config X86_SPEEDSTEP_CENTRINO
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If in doubt, say N.
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config X86_SPEEDSTEP_CENTRINO_ACPI
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bool
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depends on X86_SPEEDSTEP_CENTRINO
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config X86_ACPI_CPUFREQ
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tristate "ACPI Processor P-States driver"
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select CPU_FREQ_TABLE
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@ -73,7 +69,7 @@ comment "shared options"
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config X86_ACPI_CPUFREQ_PROC_INTF
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bool "/proc/acpi/processor/../performance interface (deprecated)"
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depends on PROC_FS
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depends on X86_ACPI_CPUFREQ || X86_SPEEDSTEP_CENTRINO_ACPI || X86_POWERNOW_K8_ACPI
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depends on X86_ACPI_CPUFREQ || X86_POWERNOW_K8_ACPI
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help
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This enables the deprecated /proc/acpi/processor/../performance
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interface. While it is helpful for debugging, the generic,
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