diff options
| author | James Hogan <james.hogan@imgtec.com> | 2014-03-04 10:20:43 +0000 |
|---|---|---|
| committer | Paul Burton <paul.burton@imgtec.com> | 2014-05-02 16:38:59 +0100 |
| commit | ae4ce45419f908cf884d3fdc37f5706972068d34 (patch) | |
| tree | 2a7968ce0e47cc0a9ce0e52479b510158321af70 /arch/mips/include/asm/mmu_context.h | |
| parent | b1d4c6cac02808b1d4e84d0187dc6014bffd2446 (diff) | |
MIPS: traps: Add CPU PM callback for trap configuration
Implement a CPU power management callback for restoring trap related CPU
configuration after CPU power up from a low power state. The following
state is restored:
- Status register
- HWREna register
- Exception vector configuration registers
- Context/XContext register
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Diffstat (limited to 'arch/mips/include/asm/mmu_context.h')
| -rw-r--r-- | arch/mips/include/asm/mmu_context.h | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/arch/mips/include/asm/mmu_context.h b/arch/mips/include/asm/mmu_context.h index e277bbad2871..ecae1dc260fd 100644 --- a/arch/mips/include/asm/mmu_context.h +++ b/arch/mips/include/asm/mmu_context.h @@ -31,11 +31,15 @@ do { \ } while (0) #ifdef CONFIG_MIPS_PGD_C0_CONTEXT + +#define TLBMISS_HANDLER_RESTORE() \ + write_c0_xcontext((unsigned long) smp_processor_id() << \ + SMP_CPUID_REGSHIFT) + #define TLBMISS_HANDLER_SETUP() \ do { \ TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir); \ - write_c0_xcontext((unsigned long) smp_processor_id() << \ - SMP_CPUID_REGSHIFT); \ + TLBMISS_HANDLER_RESTORE(); \ } while (0) #else /* !CONFIG_MIPS_PGD_C0_CONTEXT: using pgd_current*/ @@ -47,9 +51,12 @@ do { \ */ extern unsigned long pgd_current[]; -#define TLBMISS_HANDLER_SETUP() \ +#define TLBMISS_HANDLER_RESTORE() \ write_c0_context((unsigned long) smp_processor_id() << \ - SMP_CPUID_REGSHIFT); \ + SMP_CPUID_REGSHIFT) + +#define TLBMISS_HANDLER_SETUP() \ + TLBMISS_HANDLER_RESTORE(); \ back_to_back_c0_hazard(); \ TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir) #endif /* CONFIG_MIPS_PGD_C0_CONTEXT*/ |