projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| ff2e6d7e | 2 | * This file contains the power_save function for 970-family CPUs. |
| 1da177e4 LT |
3 | * |
| 4 | * This program is free software; you can redistribute it and/or | |
| 5 | * modify it under the terms of the GNU General Public License | |
| 6 | * as published by the Free Software Foundation; either version | |
| 7 | * 2 of the License, or (at your option) any later version. | |
| 8 | */ | |
| 9 | ||
| 10 | #include <linux/config.h> | |
| 11 | #include <linux/threads.h> | |
| 12 | #include <asm/processor.h> | |
| 13 | #include <asm/page.h> | |
| 14 | #include <asm/cputable.h> | |
| 15 | #include <asm/thread_info.h> | |
| 16 | #include <asm/ppc_asm.h> | |
| 0013a854 | 17 | #include <asm/asm-offsets.h> |
| 1da177e4 LT |
18 | |
| 19 | #undef DEBUG | |
| 20 | ||
| 21 | .text | |
| 22 | ||
| 1da177e4 LT |
23 | _GLOBAL(power4_idle) |
| 24 | BEGIN_FTR_SECTION | |
| 25 | blr | |
| 26 | END_FTR_SECTION_IFCLR(CPU_FTR_CAN_NAP) | |
| 1da177e4 | 27 | /* Now check if user or arch enabled NAP mode */ |
| e58c3495 DG |
28 | LOAD_REG_ADDRBASE(r3,powersave_nap) |
| 29 | lwz r4,ADDROFF(powersave_nap)(r3) | |
| 1da177e4 LT |
30 | cmpwi 0,r4,0 |
| 31 | beqlr | |
| 32 | ||
| dc1c1ca3 | 33 | /* Go to NAP now */ |
| 1da177e4 LT |
34 | BEGIN_FTR_SECTION |
| 35 | DSSALL | |
| 36 | sync | |
| 37 | END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC) | |
| ff2e6d7e PM |
38 | mfmsr r7 |
| 39 | ori r7,r7,MSR_EE | |
| 1da177e4 LT |
40 | oris r7,r7,MSR_POW@h |
| 41 | sync | |
| 42 | isync | |
| 43 | mtmsrd r7 | |
| 44 | isync | |
| 45 | sync | |
| 46 | blr |