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Linux kernel mirror (for testing)
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1#ifndef _ASM_SMTC_MT_H
2#define _ASM_SMTC_MT_H
3
4/*
5 * Definitions for SMTC multitasking on MIPS MT cores
6 */
7
8#include <asm/mips_mt.h>
9
10/*
11 * System-wide SMTC status information
12 */
13
14extern unsigned int smtc_status;
15
16#define SMTC_TLB_SHARED 0x00000001
17#define SMTC_MTC_ACTIVE 0x00000002
18
19/*
20 * TLB/ASID Management information
21 */
22
23#define MAX_SMTC_TLBS 2
24#define MAX_SMTC_ASIDS 256
25#if NR_CPUS <= 8
26typedef char asiduse;
27#else
28#if NR_CPUS <= 16
29typedef short asiduse;
30#else
31typedef long asiduse;
32#endif
33#endif
34
35extern asiduse smtc_live_asid[MAX_SMTC_TLBS][MAX_SMTC_ASIDS];
36
37void smtc_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu);
38
39void smtc_flush_tlb_asid(unsigned long asid);
40extern int mipsmt_build_cpu_map(int startslot);
41extern void mipsmt_prepare_cpus(void);
42extern void smtc_smp_finish(void);
43extern void smtc_boot_secondary(int cpu, struct task_struct *t);
44
45/*
46 * Sharing the TLB between multiple VPEs means that the
47 * "random" index selection function is not allowed to
48 * select the current value of the Index register. To
49 * avoid additional TLB pressure, the Index registers
50 * are "parked" with an non-Valid value.
51 */
52
53#define PARKED_INDEX ((unsigned int)0x80000000)
54
55#endif /* _ASM_SMTC_MT_H */