Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Copyright (C) 1999, 2000 Ralf Baechle (ralf@gnu.org) | |
3 | * Copyright (C) 1999, 2000 Silicon Graphics, Inc. | |
4 | */ | |
1da177e4 LT |
5 | #include <linux/kernel.h> |
6 | #include <linux/sched.h> | |
7 | #include <linux/interrupt.h> | |
8 | #include <linux/kernel_stat.h> | |
9 | #include <linux/param.h> | |
10 | #include <linux/timex.h> | |
11 | #include <linux/mm.h> | |
12 | ||
13 | #include <asm/sn/klconfig.h> | |
14 | #include <asm/sn/arch.h> | |
15 | #include <asm/sn/gda.h> | |
16 | ||
17 | klinfo_t *find_component(lboard_t *brd, klinfo_t *kli, unsigned char struct_type) | |
18 | { | |
19 | int index, j; | |
20 | ||
21 | if (kli == (klinfo_t *)NULL) { | |
22 | index = 0; | |
23 | } else { | |
24 | for (j = 0; j < KLCF_NUM_COMPS(brd); j++) | |
25 | if (kli == KLCF_COMP(brd, j)) | |
26 | break; | |
27 | index = j; | |
28 | if (index == KLCF_NUM_COMPS(brd)) { | |
29 | printk("find_component: Bad pointer: 0x%p\n", kli); | |
30 | return (klinfo_t *)NULL; | |
31 | } | |
32 | index++; /* next component */ | |
33 | } | |
34 | ||
35 | for (; index < KLCF_NUM_COMPS(brd); index++) { | |
36 | kli = KLCF_COMP(brd, index); | |
37 | if (KLCF_COMP_TYPE(kli) == struct_type) | |
38 | return kli; | |
39 | } | |
40 | ||
41 | /* Didn't find it. */ | |
42 | return (klinfo_t *)NULL; | |
43 | } | |
44 | ||
45 | klinfo_t *find_first_component(lboard_t *brd, unsigned char struct_type) | |
46 | { | |
47 | return find_component(brd, (klinfo_t *)NULL, struct_type); | |
48 | } | |
49 | ||
78e6f4c0 | 50 | lboard_t *find_lboard(lboard_t *start, unsigned char brd_type) |
1da177e4 LT |
51 | { |
52 | /* Search all boards stored on this node. */ | |
53 | while (start) { | |
54 | if (start->brd_type == brd_type) | |
55 | return start; | |
56 | start = KLCF_NEXT(start); | |
57 | } | |
58 | /* Didn't find it. */ | |
59 | return (lboard_t *)NULL; | |
60 | } | |
61 | ||
78e6f4c0 | 62 | lboard_t *find_lboard_class(lboard_t *start, unsigned char brd_type) |
1da177e4 LT |
63 | { |
64 | /* Search all boards stored on this node. */ | |
65 | while (start) { | |
66 | if (KLCLASS(start->brd_type) == KLCLASS(brd_type)) | |
67 | return start; | |
68 | start = KLCF_NEXT(start); | |
69 | } | |
70 | ||
71 | /* Didn't find it. */ | |
72 | return (lboard_t *)NULL; | |
73 | } | |
74 | ||
75 | cnodeid_t get_cpu_cnode(cpuid_t cpu) | |
76 | { | |
77 | return CPUID_TO_COMPACT_NODEID(cpu); | |
78 | } | |
79 | ||
78e6f4c0 | 80 | klcpu_t *nasid_slice_to_cpuinfo(nasid_t nasid, int slice) |
1da177e4 LT |
81 | { |
82 | lboard_t *brd; | |
83 | klcpu_t *acpu; | |
84 | ||
85 | if (!(brd = find_lboard((lboard_t *)KL_CONFIG_INFO(nasid), KLTYPE_IP27))) | |
86 | return (klcpu_t *)NULL; | |
87 | ||
88 | if (!(acpu = (klcpu_t *)find_first_component(brd, KLSTRUCT_CPU))) | |
89 | return (klcpu_t *)NULL; | |
90 | ||
91 | do { | |
92 | if ((acpu->cpu_info.physid) == slice) | |
93 | return acpu; | |
94 | } while ((acpu = (klcpu_t *)find_component(brd, (klinfo_t *)acpu, | |
95 | KLSTRUCT_CPU))); | |
96 | return (klcpu_t *)NULL; | |
97 | } | |
98 | ||
78e6f4c0 | 99 | klcpu_t *sn_get_cpuinfo(cpuid_t cpu) |
1da177e4 LT |
100 | { |
101 | nasid_t nasid; | |
102 | int slice; | |
103 | klcpu_t *acpu; | |
104 | gda_t *gdap = GDA; | |
105 | cnodeid_t cnode; | |
106 | ||
107 | if (!(cpu < MAXCPUS)) { | |
108 | printk("sn_get_cpuinfo: illegal cpuid 0x%lx\n", cpu); | |
109 | return NULL; | |
110 | } | |
111 | ||
112 | cnode = get_cpu_cnode(cpu); | |
113 | if (cnode == INVALID_CNODEID) | |
114 | return NULL; | |
115 | ||
116 | if ((nasid = gdap->g_nasidtable[cnode]) == INVALID_NASID) | |
117 | return NULL; | |
118 | ||
119 | for (slice = 0; slice < CPUS_PER_NODE; slice++) { | |
120 | acpu = nasid_slice_to_cpuinfo(nasid, slice); | |
121 | if (acpu && acpu->cpu_info.virtid == cpu) | |
122 | return acpu; | |
123 | } | |
124 | return NULL; | |
125 | } | |
126 | ||
127 | int get_cpu_slice(cpuid_t cpu) | |
128 | { | |
129 | klcpu_t *acpu; | |
130 | ||
131 | if ((acpu = sn_get_cpuinfo(cpu)) == NULL) | |
132 | return -1; | |
133 | return acpu->cpu_info.physid; | |
134 | } |