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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | /* |
3 | * This file contains the McKinley PMU register description tables | |
4 | * and pmc checker used by perfmon.c. | |
5 | * | |
6 | * Copyright (C) 2002-2003 Hewlett Packard Co | |
7 | * Stephane Eranian <eranian@hpl.hp.com> | |
8 | */ | |
9 | static int pfm_mck_pmc_check(struct task_struct *task, pfm_context_t *ctx, unsigned int cnum, unsigned long *val, struct pt_regs *regs); | |
10 | ||
11 | static pfm_reg_desc_t pfm_mck_pmc_desc[PMU_MAX_PMCS]={ | |
12 | /* pmc0 */ { PFM_REG_CONTROL , 0, 0x1UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}}, | |
13 | /* pmc1 */ { PFM_REG_CONTROL , 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}}, | |
14 | /* pmc2 */ { PFM_REG_CONTROL , 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}}, | |
15 | /* pmc3 */ { PFM_REG_CONTROL , 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}}, | |
16 | /* pmc4 */ { PFM_REG_COUNTING, 6, 0x0000000000800000UL, 0xfffff7fUL, NULL, pfm_mck_pmc_check, {RDEP(4),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}}, | |
17 | /* pmc5 */ { PFM_REG_COUNTING, 6, 0x0UL, 0xfffff7fUL, NULL, pfm_mck_pmc_check, {RDEP(5),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}}, | |
18 | /* pmc6 */ { PFM_REG_COUNTING, 6, 0x0UL, 0xfffff7fUL, NULL, pfm_mck_pmc_check, {RDEP(6),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}}, | |
19 | /* pmc7 */ { PFM_REG_COUNTING, 6, 0x0UL, 0xfffff7fUL, NULL, pfm_mck_pmc_check, {RDEP(7),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}}, | |
20 | /* pmc8 */ { PFM_REG_CONFIG , 0, 0xffffffff3fffffffUL, 0xffffffff3ffffffbUL, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}}, | |
21 | /* pmc9 */ { PFM_REG_CONFIG , 0, 0xffffffff3ffffffcUL, 0xffffffff3ffffffbUL, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}}, | |
22 | /* pmc10 */ { PFM_REG_MONITOR , 4, 0x0UL, 0xffffUL, NULL, pfm_mck_pmc_check, {RDEP(0)|RDEP(1),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}}, | |
23 | /* pmc11 */ { PFM_REG_MONITOR , 6, 0x0UL, 0x30f01cf, NULL, pfm_mck_pmc_check, {RDEP(2)|RDEP(3)|RDEP(17),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}}, | |
24 | /* pmc12 */ { PFM_REG_MONITOR , 6, 0x0UL, 0xffffUL, NULL, pfm_mck_pmc_check, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}}, | |
25 | /* pmc13 */ { PFM_REG_CONFIG , 0, 0x00002078fefefefeUL, 0x1e00018181818UL, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}}, | |
26 | /* pmc14 */ { PFM_REG_CONFIG , 0, 0x0db60db60db60db6UL, 0x2492UL, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}}, | |
27 | /* pmc15 */ { PFM_REG_CONFIG , 0, 0x00000000fffffff0UL, 0xfUL, NULL, pfm_mck_pmc_check, {0UL,0UL, 0UL, 0UL}, {0UL,0UL, 0UL, 0UL}}, | |
28 | { PFM_REG_END , 0, 0x0UL, -1UL, NULL, NULL, {0,}, {0,}}, /* end marker */ | |
29 | }; | |
30 | ||
31 | static pfm_reg_desc_t pfm_mck_pmd_desc[PMU_MAX_PMDS]={ | |
32 | /* pmd0 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(1),0UL, 0UL, 0UL}, {RDEP(10),0UL, 0UL, 0UL}}, | |
33 | /* pmd1 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(0),0UL, 0UL, 0UL}, {RDEP(10),0UL, 0UL, 0UL}}, | |
34 | /* pmd2 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(3)|RDEP(17),0UL, 0UL, 0UL}, {RDEP(11),0UL, 0UL, 0UL}}, | |
35 | /* pmd3 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(2)|RDEP(17),0UL, 0UL, 0UL}, {RDEP(11),0UL, 0UL, 0UL}}, | |
36 | /* pmd4 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(4),0UL, 0UL, 0UL}}, | |
37 | /* pmd5 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(5),0UL, 0UL, 0UL}}, | |
38 | /* pmd6 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(6),0UL, 0UL, 0UL}}, | |
39 | /* pmd7 */ { PFM_REG_COUNTING, 0, 0x0UL, -1UL, NULL, NULL, {0UL,0UL, 0UL, 0UL}, {RDEP(7),0UL, 0UL, 0UL}}, | |
40 | /* pmd8 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}}, | |
41 | /* pmd9 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(8)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}}, | |
42 | /* pmd10 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}}, | |
43 | /* pmd11 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}}, | |
44 | /* pmd12 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(13)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}}, | |
45 | /* pmd13 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(14)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}}, | |
46 | /* pmd14 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(15)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}}, | |
47 | /* pmd15 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(16),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}}, | |
48 | /* pmd16 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(8)|RDEP(9)|RDEP(10)|RDEP(11)|RDEP(12)|RDEP(13)|RDEP(14)|RDEP(15),0UL, 0UL, 0UL}, {RDEP(12),0UL, 0UL, 0UL}}, | |
49 | /* pmd17 */ { PFM_REG_BUFFER , 0, 0x0UL, -1UL, NULL, NULL, {RDEP(2)|RDEP(3),0UL, 0UL, 0UL}, {RDEP(11),0UL, 0UL, 0UL}}, | |
50 | { PFM_REG_END , 0, 0x0UL, -1UL, NULL, NULL, {0,}, {0,}}, /* end marker */ | |
51 | }; | |
52 | ||
53 | /* | |
54 | * PMC reserved fields must have their power-up values preserved | |
55 | */ | |
56 | static int | |
57 | pfm_mck_reserved(unsigned int cnum, unsigned long *val, struct pt_regs *regs) | |
58 | { | |
59 | unsigned long tmp1, tmp2, ival = *val; | |
60 | ||
61 | /* remove reserved areas from user value */ | |
62 | tmp1 = ival & PMC_RSVD_MASK(cnum); | |
63 | ||
64 | /* get reserved fields values */ | |
65 | tmp2 = PMC_DFL_VAL(cnum) & ~PMC_RSVD_MASK(cnum); | |
66 | ||
67 | *val = tmp1 | tmp2; | |
68 | ||
69 | DPRINT(("pmc[%d]=0x%lx, mask=0x%lx, reset=0x%lx, val=0x%lx\n", | |
70 | cnum, ival, PMC_RSVD_MASK(cnum), PMC_DFL_VAL(cnum), *val)); | |
71 | return 0; | |
72 | } | |
73 | ||
74 | /* | |
75 | * task can be NULL if the context is unloaded | |
76 | */ | |
77 | static int | |
78 | pfm_mck_pmc_check(struct task_struct *task, pfm_context_t *ctx, unsigned int cnum, unsigned long *val, struct pt_regs *regs) | |
79 | { | |
80 | int ret = 0, check_case1 = 0; | |
81 | unsigned long val8 = 0, val14 = 0, val13 = 0; | |
82 | int is_loaded; | |
83 | ||
84 | /* first preserve the reserved fields */ | |
85 | pfm_mck_reserved(cnum, val, regs); | |
86 | ||
87 | /* sanitfy check */ | |
88 | if (ctx == NULL) return -EINVAL; | |
89 | ||
90 | is_loaded = ctx->ctx_state == PFM_CTX_LOADED || ctx->ctx_state == PFM_CTX_MASKED; | |
91 | ||
92 | /* | |
93 | * we must clear the debug registers if pmc13 has a value which enable | |
94 | * memory pipeline event constraints. In this case we need to clear the | |
95 | * the debug registers if they have not yet been accessed. This is required | |
96 | * to avoid picking stale state. | |
97 | * PMC13 is "active" if: | |
98 | * one of the pmc13.cfg_dbrpXX field is different from 0x3 | |
99 | * AND | |
100 | * at the corresponding pmc13.ena_dbrpXX is set. | |
101 | */ | |
102 | DPRINT(("cnum=%u val=0x%lx, using_dbreg=%d loaded=%d\n", cnum, *val, ctx->ctx_fl_using_dbreg, is_loaded)); | |
103 | ||
104 | if (cnum == 13 && is_loaded | |
105 | && (*val & 0x1e00000000000UL) && (*val & 0x18181818UL) != 0x18181818UL && ctx->ctx_fl_using_dbreg == 0) { | |
106 | ||
107 | DPRINT(("pmc[%d]=0x%lx has active pmc13 settings, clearing dbr\n", cnum, *val)); | |
108 | ||
109 | /* don't mix debug with perfmon */ | |
110 | if (task && (task->thread.flags & IA64_THREAD_DBG_VALID) != 0) return -EINVAL; | |
111 | ||
112 | /* | |
113 | * a count of 0 will mark the debug registers as in use and also | |
114 | * ensure that they are properly cleared. | |
115 | */ | |
116 | ret = pfm_write_ibr_dbr(PFM_DATA_RR, ctx, NULL, 0, regs); | |
117 | if (ret) return ret; | |
118 | } | |
119 | /* | |
120 | * we must clear the (instruction) debug registers if any pmc14.ibrpX bit is enabled | |
121 | * before they are (fl_using_dbreg==0) to avoid picking up stale information. | |
122 | */ | |
123 | if (cnum == 14 && is_loaded && ((*val & 0x2222UL) != 0x2222UL) && ctx->ctx_fl_using_dbreg == 0) { | |
124 | ||
125 | DPRINT(("pmc[%d]=0x%lx has active pmc14 settings, clearing ibr\n", cnum, *val)); | |
126 | ||
127 | /* don't mix debug with perfmon */ | |
128 | if (task && (task->thread.flags & IA64_THREAD_DBG_VALID) != 0) return -EINVAL; | |
129 | ||
130 | /* | |
131 | * a count of 0 will mark the debug registers as in use and also | |
132 | * ensure that they are properly cleared. | |
133 | */ | |
134 | ret = pfm_write_ibr_dbr(PFM_CODE_RR, ctx, NULL, 0, regs); | |
135 | if (ret) return ret; | |
136 | ||
137 | } | |
138 | ||
139 | switch(cnum) { | |
140 | case 4: *val |= 1UL << 23; /* force power enable bit */ | |
141 | break; | |
142 | case 8: val8 = *val; | |
143 | val13 = ctx->ctx_pmcs[13]; | |
144 | val14 = ctx->ctx_pmcs[14]; | |
145 | check_case1 = 1; | |
146 | break; | |
147 | case 13: val8 = ctx->ctx_pmcs[8]; | |
148 | val13 = *val; | |
149 | val14 = ctx->ctx_pmcs[14]; | |
150 | check_case1 = 1; | |
151 | break; | |
152 | case 14: val8 = ctx->ctx_pmcs[8]; | |
153 | val13 = ctx->ctx_pmcs[13]; | |
154 | val14 = *val; | |
155 | check_case1 = 1; | |
156 | break; | |
157 | } | |
158 | /* check illegal configuration which can produce inconsistencies in tagging | |
159 | * i-side events in L1D and L2 caches | |
160 | */ | |
161 | if (check_case1) { | |
162 | ret = ((val13 >> 45) & 0xf) == 0 | |
163 | && ((val8 & 0x1) == 0) | |
164 | && ((((val14>>1) & 0x3) == 0x2 || ((val14>>1) & 0x3) == 0x0) | |
165 | ||(((val14>>4) & 0x3) == 0x2 || ((val14>>4) & 0x3) == 0x0)); | |
166 | ||
167 | if (ret) DPRINT((KERN_DEBUG "perfmon: failure check_case1\n")); | |
168 | } | |
169 | ||
170 | return ret ? -EINVAL : 0; | |
171 | } | |
172 | ||
173 | /* | |
174 | * impl_pmcs, impl_pmds are computed at runtime to minimize errors! | |
175 | */ | |
176 | static pmu_config_t pmu_conf_mck={ | |
177 | .pmu_name = "Itanium 2", | |
178 | .pmu_family = 0x1f, | |
179 | .flags = PFM_PMU_IRQ_RESEND, | |
180 | .ovfl_val = (1UL << 47) - 1, | |
181 | .pmd_desc = pfm_mck_pmd_desc, | |
182 | .pmc_desc = pfm_mck_pmc_desc, | |
183 | .num_ibrs = 8, | |
184 | .num_dbrs = 8, | |
72fdbdce | 185 | .use_rr_dbregs = 1 /* debug register are use for range restrictions */ |
1da177e4 LT |
186 | }; |
187 | ||
188 |