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author | Dmitry Torokhov <dtor_core@ameritech.net> | 2006-04-29 01:11:23 -0400 |
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committer | Dmitry Torokhov <dtor_core@ameritech.net> | 2006-04-29 01:11:23 -0400 |
commit | 7b7e394185014e0f3bd8989cac937003f20ef9ce (patch) | |
tree | 3beda5f979bba0aa9822534e239cf1b45f3be69c /include/asm-mips/smtc.h | |
parent | ddc5d3414593e4d7ad7fbd33e7f7517fcc234544 (diff) | |
parent | 693f7d362055261882659475d2ef022e32edbff1 (diff) |
Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'include/asm-mips/smtc.h')
-rw-r--r-- | include/asm-mips/smtc.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/include/asm-mips/smtc.h b/include/asm-mips/smtc.h new file mode 100644 index 00000000000..e1941d1b872 --- /dev/null +++ b/include/asm-mips/smtc.h @@ -0,0 +1,55 @@ +#ifndef _ASM_SMTC_MT_H +#define _ASM_SMTC_MT_H + +/* + * Definitions for SMTC multitasking on MIPS MT cores + */ + +#include <asm/mips_mt.h> + +/* + * System-wide SMTC status information + */ + +extern unsigned int smtc_status; + +#define SMTC_TLB_SHARED 0x00000001 +#define SMTC_MTC_ACTIVE 0x00000002 + +/* + * TLB/ASID Management information + */ + +#define MAX_SMTC_TLBS 2 +#define MAX_SMTC_ASIDS 256 +#if NR_CPUS <= 8 +typedef char asiduse; +#else +#if NR_CPUS <= 16 +typedef short asiduse; +#else +typedef long asiduse; +#endif +#endif + +extern asiduse smtc_live_asid[MAX_SMTC_TLBS][MAX_SMTC_ASIDS]; + +void smtc_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu); + +void smtc_flush_tlb_asid(unsigned long asid); +extern int mipsmt_build_cpu_map(int startslot); +extern void mipsmt_prepare_cpus(void); +extern void smtc_smp_finish(void); +extern void smtc_boot_secondary(int cpu, struct task_struct *t); + +/* + * Sharing the TLB between multiple VPEs means that the + * "random" index selection function is not allowed to + * select the current value of the Index register. To + * avoid additional TLB pressure, the Index registers + * are "parked" with an non-Valid value. + */ + +#define PARKED_INDEX ((unsigned int)0x80000000) + +#endif /* _ASM_SMTC_MT_H */ |