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41c594ab RB |
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> | |
8531a35e | 9 | #include <asm/smtc_ipi.h> |
41c594ab RB |
10 | |
11 | /* | |
12 | * System-wide SMTC status information | |
13 | */ | |
14 | ||
15 | extern unsigned int smtc_status; | |
16 | ||
70342287 RB |
17 | #define SMTC_TLB_SHARED 0x00000001 |
18 | #define SMTC_MTC_ACTIVE 0x00000002 | |
41c594ab RB |
19 | |
20 | /* | |
21 | * TLB/ASID Management information | |
22 | */ | |
23 | ||
24 | #define MAX_SMTC_TLBS 2 | |
25 | #define MAX_SMTC_ASIDS 256 | |
26 | #if NR_CPUS <= 8 | |
27 | typedef char asiduse; | |
28 | #else | |
29 | #if NR_CPUS <= 16 | |
30 | typedef short asiduse; | |
31 | #else | |
32 | typedef long asiduse; | |
33 | #endif | |
34 | #endif | |
35 | ||
889a4c7b SH |
36 | /* |
37 | * VPE Management information | |
38 | */ | |
39 | ||
40 | #define MAX_SMTC_VPES MAX_SMTC_TLBS /* FIXME: May not always be true. */ | |
41 | ||
41c594ab RB |
42 | extern asiduse smtc_live_asid[MAX_SMTC_TLBS][MAX_SMTC_ASIDS]; |
43 | ||
b3920590 RB |
44 | struct mm_struct; |
45 | struct task_struct; | |
46 | ||
41c594ab | 47 | void smtc_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu); |
8531a35e | 48 | void self_ipi(struct smtc_ipi *); |
41c594ab | 49 | void smtc_flush_tlb_asid(unsigned long asid); |
8531a35e KK |
50 | extern int smtc_build_cpu_map(int startslot); |
51 | extern void smtc_prepare_cpus(int cpus); | |
41c594ab RB |
52 | extern void smtc_smp_finish(void); |
53 | extern void smtc_boot_secondary(int cpu, struct task_struct *t); | |
39b8d525 | 54 | extern void smtc_cpus_done(void); |
731f90fa | 55 | extern void smtc_init_secondary(void); |
41c594ab | 56 | |
8531a35e | 57 | |
41c594ab RB |
58 | /* |
59 | * Sharing the TLB between multiple VPEs means that the | |
60 | * "random" index selection function is not allowed to | |
61 | * select the current value of the Index register. To | |
62 | * avoid additional TLB pressure, the Index registers | |
63 | * are "parked" with an non-Valid value. | |
64 | */ | |
65 | ||
66 | #define PARKED_INDEX ((unsigned int)0x80000000) | |
67 | ||
fe56b954 RB |
68 | /* |
69 | * Define low-level interrupt mask for IPIs, if necessary. | |
70 | * By default, use SW interrupt 1, which requires no external | |
71 | * hardware support, but which works only for single-core | |
72 | * MIPS MT systems. | |
73 | */ | |
74 | #ifndef MIPS_CPU_IPI_IRQ | |
75 | #define MIPS_CPU_IPI_IRQ 1 | |
76 | #endif | |
77 | ||
41c594ab | 78 | #endif /* _ASM_SMTC_MT_H */ |