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Lines 39-44
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| 39 |
#include <linux/cpufreq.h> |
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#include <linux/cpufreq.h> |
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#include <linux/proc_fs.h> |
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#include <linux/proc_fs.h> |
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#include <linux/seq_file.h> |
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#include <linux/seq_file.h> |
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#include <linux/dmi.h> |
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#include <linux/moduleparam.h> |
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#include <asm/io.h> |
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#include <asm/io.h> |
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#include <asm/system.h> |
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#include <asm/system.h> |
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Lines 99-104
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}, |
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}, |
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}; |
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}; |
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static int c2 = -1; |
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static int c3 = -1; |
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struct acpi_processor_errata { |
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struct acpi_processor_errata { |
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u8 smp; |
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u8 smp; |
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Lines 140-145
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static struct acpi_processor *processors[NR_CPUS]; |
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static struct acpi_processor *processors[NR_CPUS]; |
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static struct acpi_processor_errata errata; |
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static struct acpi_processor_errata errata; |
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module_param_named(c2, c2, bool, 0); |
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module_param_named(c3, c3, bool, 0); |
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static void (*pm_idle_save)(void); |
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static void (*pm_idle_save)(void); |
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Lines 651-656
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else if (errata.smp) |
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else if (errata.smp) |
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ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
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ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
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"C2 not supported in SMP mode\n")); |
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"C2 not supported in SMP mode\n")); |
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else if (!c2) |
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printk(KERN_INFO "C2 disabled\n"); |
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/* |
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/* |
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* Otherwise we've met all of our C2 requirements. |
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* Otherwise we've met all of our C2 requirements. |
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* Normalize the C2 latency to expidite policy. |
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* Normalize the C2 latency to expidite policy. |
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Lines 706-711
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ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
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ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
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"C3 not supported on PIIX4 with Type-F DMA\n")); |
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"C3 not supported on PIIX4 with Type-F DMA\n")); |
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} |
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} |
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else if (!c3) |
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printk(KERN_INFO "C3 disabled\n"); |
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/* |
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/* |
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* Otherwise we've met all of our C3 requirements. |
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* Otherwise we've met all of our C3 requirements. |
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* Normalize the C2 latency to expidite policy. Enable |
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* Normalize the C2 latency to expidite policy. Enable |
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Lines 2438-2443
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return_VALUE(0); |
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return_VALUE(0); |
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} |
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} |
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/* IBM ThinkPad R40e crashes mysteriously when going into C2 or C3. |
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For now disable this. Probably a bug somewhere else. */ |
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static int no_c2c3(struct dmi_system_id *id) |
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{ |
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printk(KERN_INFO |
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"%s detected - C2,C3 disabled. Overwrite with \"processor.c2=1 processor.c3=1\n\"", |
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id->ident); |
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if (c2 == -1) |
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c2 = 0; |
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if (c3 == -1) |
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c3 = 0; |
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return 0; |
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} |
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static struct dmi_system_id __initdata processor_dmi_table[] = { |
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{ no_c2c3, "IBM ThinkPad R40e", { |
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DMI_MATCH(DMI_BIOS_VENDOR,"IBM"), |
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DMI_MATCH(DMI_BIOS_VERSION,"1SET60WW") }}, |
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{}, |
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}; |
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/* We keep the driver loaded even when ACPI is not running. |
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/* We keep the driver loaded even when ACPI is not running. |
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This is needed for the powernow-k8 driver, that works even without |
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This is needed for the powernow-k8 driver, that works even without |
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Lines 2468-2473
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acpi_processor_ppc_init(); |
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acpi_processor_ppc_init(); |
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dmi_check_system(processor_dmi_table); |
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return_VALUE(0); |
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return_VALUE(0); |
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} |
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} |
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