projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 512d1027 AH |
1 | Kernel driver fam15h_power |
| 2 | ========================== | |
| 3 | ||
| 4 | Supported chips: | |
| 5 | * AMD Family 15h Processors | |
| 5aeb5d20 | 6 | * AMD Family 16h Processors |
| 512d1027 AH |
7 | |
| 8 | Prefix: 'fam15h_power' | |
| 9 | Addresses scanned: PCI space | |
| 10 | Datasheets: | |
| 11 | BIOS and Kernel Developer's Guide (BKDG) For AMD Family 15h Processors | |
| 5aeb5d20 | 12 | BIOS and Kernel Developer's Guide (BKDG) For AMD Family 16h Processors |
| 512d1027 | 13 | |
| d034fbf0 | 14 | Author: Andreas Herrmann <herrmann.der.user@googlemail.com> |
| 512d1027 AH |
15 | |
| 16 | Description | |
| 17 | ----------- | |
| 18 | ||
| 19 | This driver permits reading of registers providing power information | |
| 5aeb5d20 | 20 | of AMD Family 15h and 16h processors. |
| 512d1027 | 21 | |
| 5aeb5d20 HR |
22 | For AMD Family 15h and 16h processors the following power values can |
| 23 | be calculated using different processor northbridge function | |
| 24 | registers: | |
| 512d1027 AH |
25 | |
| 26 | * BasePwrWatts: Specifies in watts the maximum amount of power | |
| 27 | consumed by the processor for NB and logic external to the core. | |
| 28 | * ProcessorPwrWatts: Specifies in watts the maximum amount of power | |
| 29 | the processor can support. | |
| 30 | * CurrPwrWatts: Specifies in watts the current amount of power being | |
| 31 | consumed by the processor. | |
| 32 | ||
| 33 | This driver provides ProcessorPwrWatts and CurrPwrWatts: | |
| 34 | * power1_crit (ProcessorPwrWatts) | |
| 35 | * power1_input (CurrPwrWatts) | |
| 36 | ||
| 37 | On multi-node processors the calculated value is for the entire | |
| 38 | package and not for a single node. Thus the driver creates sysfs | |
| 39 | attributes only for internal node0 of a multi-node processor. |