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-rw-r--r--arch/x86/kernel/cpu/cpufreq/powernow-k8.c109
-rw-r--r--arch/x86/kernel/cpu/cpufreq/powernow-k8.h3
2 files changed, 75 insertions, 37 deletions
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index 84bb395..4e72719 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -737,44 +737,63 @@ static int find_psb_table(struct powernow_k8_data *data)
#ifdef CONFIG_X86_POWERNOW_K8_ACPI
static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, unsigned int index)
{
- if (!data->acpi_data.state_count || (cpu_family == CPU_HW_PSTATE))
+ if (!data->acpi_data->state_count || (cpu_family == CPU_HW_PSTATE))
return;
- data->irt = (data->acpi_data.states[index].control >> IRT_SHIFT) & IRT_MASK;
- data->rvo = (data->acpi_data.states[index].control >> RVO_SHIFT) & RVO_MASK;
- data->exttype = (data->acpi_data.states[index].control >> EXT_TYPE_SHIFT) & EXT_TYPE_MASK;
- data->plllock = (data->acpi_data.states[index].control >> PLL_L_SHIFT) & PLL_L_MASK;
- data->vidmvs = 1 << ((data->acpi_data.states[index].control >> MVS_SHIFT) & MVS_MASK);
- data->vstable = (data->acpi_data.states[index].control >> VST_SHIFT) & VST_MASK;
+ data->irt = (data->acpi_data->states[index].control >> IRT_SHIFT) & IRT_MASK;
+ data->rvo = (data->acpi_data->states[index].control >> RVO_SHIFT) & RVO_MASK;
+ data->exttype = (data->acpi_data->states[index].control >> EXT_TYPE_SHIFT) & EXT_TYPE_MASK;
+ data->plllock = (data->acpi_data->states[index].control >> PLL_L_SHIFT) & PLL_L_MASK;
+ data->vidmvs = 1 << ((data->acpi_data->states[index].control >> MVS_SHIFT) & MVS_MASK);
+ data->vstable = (data->acpi_data->states[index].control >> VST_SHIFT) & VST_MASK;
+}
+
+
+static struct acpi_processor_performance *acpi_perf_data;
+static int preregister_valid;
+
+static int powernow_k8_cpu_preinit_acpi(void)
+{
+ acpi_perf_data = alloc_percpu(struct acpi_processor_performance);
+ if (!acpi_perf_data)
+ return -ENODEV;
+
+ if (acpi_processor_preregister_performance(acpi_perf_data))
+ return -ENODEV;
+ else
+ preregister_valid = 1;
+ return 0;
}
static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
{
struct cpufreq_frequency_table *powernow_table;
int ret_val;
+ int cpu = 0;
- if (acpi_processor_register_performance(&data->acpi_data, data->cpu)) {
+ data->acpi_data = percpu_ptr(acpi_perf_data, cpu);
+ if (acpi_processor_register_performance(data->acpi_data, data->cpu)) {
dprintk("register performance failed: bad ACPI data\n");
return -EIO;
}
/* verify the data contained in the ACPI structures */
- if (data->acpi_data.state_count <= 1) {
+ if (data->acpi_data->state_count <= 1) {
dprintk("No ACPI P-States\n");
goto err_out;
}
- if ((data->acpi_data.control_register.space_id != ACPI_ADR_SPACE_FIXED_HARDWARE) ||
- (data->acpi_data.status_register.space_id != ACPI_ADR_SPACE_FIXED_HARDWARE)) {
+ if ((data->acpi_data->control_register.space_id != ACPI_ADR_SPACE_FIXED_HARDWARE) ||
+ (data->acpi_data->status_register.space_id != ACPI_ADR_SPACE_FIXED_HARDWARE)) {
dprintk("Invalid control/status registers (%x - %x)\n",
- data->acpi_data.control_register.space_id,
- data->acpi_data.status_register.space_id);
+ data->acpi_data->control_register.space_id,
+ data->acpi_data->status_register.space_id);
goto err_out;
}
/* fill in data->powernow_table */
powernow_table = kmalloc((sizeof(struct cpufreq_frequency_table)
- * (data->acpi_data.state_count + 1)), GFP_KERNEL);
+ * (data->acpi_data->state_count + 1)), GFP_KERNEL);
if (!powernow_table) {
dprintk("powernow_table memory alloc failure\n");
goto err_out;
@@ -787,12 +806,12 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
if (ret_val)
goto err_out_mem;
- powernow_table[data->acpi_data.state_count].frequency = CPUFREQ_TABLE_END;
- powernow_table[data->acpi_data.state_count].index = 0;
+ powernow_table[data->acpi_data->state_count].frequency = CPUFREQ_TABLE_END;
+ powernow_table[data->acpi_data->state_count].index = 0;
data->powernow_table = powernow_table;
/* fill in data */
- data->numps = data->acpi_data.state_count;
+ data->numps = data->acpi_data->state_count;
if (first_cpu(per_cpu(cpu_core_map, data->cpu)) == data->cpu)
print_basics(data);
powernow_k8_acpi_pst_values(data, 0);
@@ -800,16 +819,31 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
/* notify BIOS that we exist */
acpi_processor_notify_smm(THIS_MODULE);
+ /* determine affinity, from ACPI if available */
+ if (preregister_valid) {
+ if ((data->acpi_data->shared_type == CPUFREQ_SHARED_TYPE_ALL) ||
+ (data->acpi_data->shared_type == CPUFREQ_SHARED_TYPE_ANY))
+ data->starting_core_affinity = data->acpi_data->shared_cpu_map;
+ else
+ data->starting_core_affinity = cpumask_of_cpu(data->cpu);
+ } else {
+ /* best guess from family if not */
+ if (cpu_family == CPU_HW_PSTATE)
+ data->starting_core_affinity = cpumask_of_cpu(data->cpu);
+ else
+ data->starting_core_affinity = per_cpu(cpu_core_map, data->cpu);
+ }
+
return 0;
err_out_mem:
kfree(powernow_table);
err_out:
- acpi_processor_unregister_performance(&data->acpi_data, data->cpu);
+ acpi_processor_unregister_performance(data->acpi_data, data->cpu);
/* data->acpi_data.state_count informs us at ->exit() whether ACPI was used */
- data->acpi_data.state_count = 0;
+ data->acpi_data->state_count = 0;
return -ENODEV;
}
@@ -821,10 +855,10 @@ static int fill_powernow_table_pstate(struct powernow_k8_data *data, struct cpuf
rdmsr(MSR_PSTATE_CUR_LIMIT, hi, lo);
data->max_hw_pstate = (hi & HW_PSTATE_MAX_MASK) >> HW_PSTATE_MAX_SHIFT;
- for (i = 0; i < data->acpi_data.state_count; i++) {
+ for (i = 0; i < data->acpi_data->state_count; i++) {
u32 index;
- index = data->acpi_data.states[i].control & HW_PSTATE_MASK;
+ index = data->acpi_data->states[i].control & HW_PSTATE_MASK;
if (index > data->max_hw_pstate) {
printk(KERN_ERR PFX "invalid pstate %d - bad value %d.\n", i, index);
printk(KERN_ERR PFX "Please report to BIOS manufacturer\n");
@@ -840,7 +874,7 @@ static int fill_powernow_table_pstate(struct powernow_k8_data *data, struct cpuf
powernow_table[i].index = index;
- powernow_table[i].frequency = data->acpi_data.states[i].core_frequency * 1000;
+ powernow_table[i].frequency = data->acpi_data->states[i].core_frequency * 1000;
}
return 0;
}
@@ -849,16 +883,16 @@ static int fill_powernow_table_fidvid(struct powernow_k8_data *data, struct cpuf
{
int i;
int cntlofreq = 0;
- for (i = 0; i < data->acpi_data.state_count; i++) {
+ for (i = 0; i < data->acpi_data->state_count; i++) {
u32 fid;
u32 vid;
if (data->exttype) {
- fid = data->acpi_data.states[i].status & EXT_FID_MASK;
- vid = (data->acpi_data.states[i].status >> VID_SHIFT) & EXT_VID_MASK;
+ fid = data->acpi_data->states[i].status & EXT_FID_MASK;
+ vid = (data->acpi_data->states[i].status >> VID_SHIFT) & EXT_VID_MASK;
} else {
- fid = data->acpi_data.states[i].control & FID_MASK;
- vid = (data->acpi_data.states[i].control >> VID_SHIFT) & VID_MASK;
+ fid = data->acpi_data->states[i].control & FID_MASK;
+ vid = (data->acpi_data->states[i].control >> VID_SHIFT) & VID_MASK;
}
dprintk(" %d : fid 0x%x, vid 0x%x\n", i, fid, vid);
@@ -899,10 +933,10 @@ static int fill_powernow_table_fidvid(struct powernow_k8_data *data, struct cpuf
cntlofreq = i;
}
- if (powernow_table[i].frequency != (data->acpi_data.states[i].core_frequency * 1000)) {
+ if (powernow_table[i].frequency != (data->acpi_data->states[i].core_frequency * 1000)) {
printk(KERN_INFO PFX "invalid freq entries %u kHz vs. %u kHz\n",
powernow_table[i].frequency,
- (unsigned int) (data->acpi_data.states[i].core_frequency * 1000));
+ (unsigned int) (data->acpi_data->states[i].core_frequency * 1000));
powernow_table[i].frequency = CPUFREQ_ENTRY_INVALID;
continue;
}
@@ -912,11 +946,12 @@ static int fill_powernow_table_fidvid(struct powernow_k8_data *data, struct cpuf
static void powernow_k8_cpu_exit_acpi(struct powernow_k8_data *data)
{
- if (data->acpi_data.state_count)
- acpi_processor_unregister_performance(&data->acpi_data, data->cpu);
+ if (data->acpi_data->state_count)
+ acpi_processor_unregister_performance(data->acpi_data, data->cpu);
}
#else
+static int powernow_k8_cpu_preinit_acpi(void) { return -ENODEV; }
static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data) { return -ENODEV; }
static void powernow_k8_cpu_exit_acpi(struct powernow_k8_data *data) { return; }
static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, unsigned int index) { return; }
@@ -1101,7 +1136,7 @@ static int powernowk8_verify(struct cpufreq_policy *pol)
static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
{
struct powernow_k8_data *data;
- cpumask_t oldmask;
+ cpumask_t oldmask = CPU_MASK_ALL;
int rc;
if (!cpu_online(pol->cpu))
@@ -1174,10 +1209,7 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
/* run on any CPU again */
set_cpus_allowed_ptr(current, &oldmask);
- if (cpu_family == CPU_HW_PSTATE)
- pol->cpus = cpumask_of_cpu(pol->cpu);
- else
- pol->cpus = per_cpu(cpu_core_map, pol->cpu);
+ pol->cpus = data->starting_core_affinity;
data->available_cores = &(pol->cpus);
/* Take a crude guess here.
@@ -1300,6 +1332,7 @@ static int __cpuinit powernowk8_init(void)
}
if (supported_cpus == num_online_cpus()) {
+ powernow_k8_cpu_preinit_acpi();
printk(KERN_INFO PFX "Found %d %s "
"processors (%d cpu cores) (" VERSION ")\n",
num_online_nodes(),
@@ -1316,6 +1349,10 @@ static void __exit powernowk8_exit(void)
dprintk("exit\n");
cpufreq_unregister_driver(&cpufreq_amd64_driver);
+
+#ifdef CONFIG_X86_POWERNOW_K8_ACPI
+ free_percpu(acpi_perf_data);
+#endif
}
MODULE_AUTHOR("Paul Devriendt <paul.devriendt@amd.com> and Mark Langsdorf <mark.langsdorf@amd.com>");
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.h b/arch/x86/kernel/cpu/cpufreq/powernow-k8.h
index ab48cfe..a62612c 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.h
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.h
@@ -33,12 +33,13 @@ struct powernow_k8_data {
#ifdef CONFIG_X86_POWERNOW_K8_ACPI
/* the acpi table needs to be kept. it's only available if ACPI was
* used to determine valid frequency/vid/fid states */
- struct acpi_processor_performance acpi_data;
+ struct acpi_processor_performance *acpi_data;
#endif
/* we need to keep track of associated cores, but let cpufreq
* handle hotplug events - so just point at cpufreq pol->cpus
* structure */
cpumask_t *available_cores;
+ cpumask_t starting_core_affinity;
};
generated by cgit v0.10.2 at 2024-11-16 13:29:26 (GMT)