1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Copyright 2009 Paul Mackerras, IBM Corporation.
4  * Copyright 2013 Michael Ellerman, IBM Corporation.
5  * Copyright 2016 Madhavan Srinivasan, IBM Corporation.
6  */
7 
8 #ifndef _LINUX_POWERPC_PERF_ISA207_COMMON_H_
9 #define _LINUX_POWERPC_PERF_ISA207_COMMON_H_
10 
11 #include <linux/kernel.h>
12 #include <linux/perf_event.h>
13 #include <asm/firmware.h>
14 #include <asm/cputable.h>
15 
16 #define EVENT_EBB_MASK		1ull
17 #define EVENT_EBB_SHIFT		PERF_EVENT_CONFIG_EBB_SHIFT
18 #define EVENT_BHRB_MASK		1ull
19 #define EVENT_BHRB_SHIFT	62
20 #define EVENT_WANTS_BHRB	(EVENT_BHRB_MASK << EVENT_BHRB_SHIFT)
21 #define EVENT_IFM_MASK		3ull
22 #define EVENT_IFM_SHIFT		60
23 #define EVENT_THR_CMP_SHIFT	40	/* Threshold CMP value */
24 #define EVENT_THR_CMP_MASK	0x3ff
25 #define EVENT_THR_CTL_SHIFT	32	/* Threshold control value (start/stop) */
26 #define EVENT_THR_CTL_MASK	0xffull
27 #define EVENT_THR_SEL_SHIFT	29	/* Threshold select value */
28 #define EVENT_THR_SEL_MASK	0x7
29 #define EVENT_THRESH_SHIFT	29	/* All threshold bits */
30 #define EVENT_THRESH_MASK	0x1fffffull
31 #define EVENT_SAMPLE_SHIFT	24	/* Sampling mode & eligibility */
32 #define EVENT_SAMPLE_MASK	0x1f
33 #define EVENT_CACHE_SEL_SHIFT	20	/* L2/L3 cache select */
34 #define EVENT_CACHE_SEL_MASK	0xf
35 #define EVENT_IS_L1		(4 << EVENT_CACHE_SEL_SHIFT)
36 #define EVENT_PMC_SHIFT		16	/* PMC number (1-based) */
37 #define EVENT_PMC_MASK		0xf
38 #define EVENT_UNIT_SHIFT	12	/* Unit */
39 #define EVENT_UNIT_MASK		0xf
40 #define EVENT_COMBINE_SHIFT	11	/* Combine bit */
41 #define EVENT_COMBINE_MASK	0x1
42 #define EVENT_COMBINE(v)	(((v) >> EVENT_COMBINE_SHIFT) & EVENT_COMBINE_MASK)
43 #define EVENT_MARKED_SHIFT	8	/* Marked bit */
44 #define EVENT_MARKED_MASK	0x1
45 #define EVENT_IS_MARKED		(EVENT_MARKED_MASK << EVENT_MARKED_SHIFT)
46 #define EVENT_PSEL_MASK		0xff	/* PMCxSEL value */
47 
48 /* Bits defined by Linux */
49 #define EVENT_LINUX_MASK	\
50 	((EVENT_EBB_MASK  << EVENT_EBB_SHIFT)			|	\
51 	 (EVENT_BHRB_MASK << EVENT_BHRB_SHIFT)			|	\
52 	 (EVENT_IFM_MASK  << EVENT_IFM_SHIFT))
53 
54 #define EVENT_VALID_MASK	\
55 	((EVENT_THRESH_MASK    << EVENT_THRESH_SHIFT)		|	\
56 	 (EVENT_SAMPLE_MASK    << EVENT_SAMPLE_SHIFT)		|	\
57 	 (EVENT_CACHE_SEL_MASK << EVENT_CACHE_SEL_SHIFT)	|	\
58 	 (EVENT_PMC_MASK       << EVENT_PMC_SHIFT)		|	\
59 	 (EVENT_UNIT_MASK      << EVENT_UNIT_SHIFT)		|	\
60 	 (EVENT_COMBINE_MASK   << EVENT_COMBINE_SHIFT)		|	\
61 	 (EVENT_MARKED_MASK    << EVENT_MARKED_SHIFT)		|	\
62 	  EVENT_LINUX_MASK					|	\
63 	  EVENT_PSEL_MASK)
64 
65 #define ONLY_PLM \
66 	(PERF_SAMPLE_BRANCH_USER        |\
67 	 PERF_SAMPLE_BRANCH_KERNEL      |\
68 	 PERF_SAMPLE_BRANCH_HV)
69 
70 /* Contants to support power9 raw encoding format */
71 #define p9_EVENT_COMBINE_SHIFT	10	/* Combine bit */
72 #define p9_EVENT_COMBINE_MASK	0x3ull
73 #define p9_EVENT_COMBINE(v)	(((v) >> p9_EVENT_COMBINE_SHIFT) & p9_EVENT_COMBINE_MASK)
74 #define p9_SDAR_MODE_SHIFT	50
75 #define p9_SDAR_MODE_MASK	0x3ull
76 #define p9_SDAR_MODE(v)		(((v) >> p9_SDAR_MODE_SHIFT) & p9_SDAR_MODE_MASK)
77 
78 #define p9_EVENT_VALID_MASK		\
79 	((p9_SDAR_MODE_MASK   << p9_SDAR_MODE_SHIFT		|	\
80 	(EVENT_THRESH_MASK    << EVENT_THRESH_SHIFT)		|	\
81 	(EVENT_SAMPLE_MASK    << EVENT_SAMPLE_SHIFT)		|	\
82 	(EVENT_CACHE_SEL_MASK << EVENT_CACHE_SEL_SHIFT)		|	\
83 	(EVENT_PMC_MASK       << EVENT_PMC_SHIFT)		|	\
84 	(EVENT_UNIT_MASK      << EVENT_UNIT_SHIFT)		|	\
85 	(p9_EVENT_COMBINE_MASK << p9_EVENT_COMBINE_SHIFT)	|	\
86 	(EVENT_MARKED_MASK    << EVENT_MARKED_SHIFT)		|	\
87 	 EVENT_LINUX_MASK					|	\
88 	 EVENT_PSEL_MASK))
89 
90 /*
91  * Layout of constraint bits:
92  *
93  *        60        56        52        48        44        40        36        32
94  * | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - |
95  *   [   fab_match   ]         [       thresh_cmp      ] [   thresh_ctl    ] [   ]
96  *                                                                             |
97  *                                                                 thresh_sel -*
98  *
99  *        28        24        20        16        12         8         4         0
100  * | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - |
101  *               [ ] |   [ ]   [  sample ]   [     ]   [6] [5]   [4] [3]   [2] [1]
102  *                |  |    |                     |
103  *      BHRB IFM -*  |    |                     |      Count of events for each PMC.
104  *              EBB -*    |                     |        p1, p2, p3, p4, p5, p6.
105  *      L1 I/D qualifier -*                     |
106  *                     nc - number of counters -*
107  *
108  * The PMC fields P1..P6, and NC, are adder fields. As we accumulate constraints
109  * we want the low bit of each field to be added to any existing value.
110  *
111  * Everything else is a value field.
112  */
113 
114 #define CNST_FAB_MATCH_VAL(v)	(((v) & EVENT_THR_CTL_MASK) << 56)
115 #define CNST_FAB_MATCH_MASK	CNST_FAB_MATCH_VAL(EVENT_THR_CTL_MASK)
116 
117 /* We just throw all the threshold bits into the constraint */
118 #define CNST_THRESH_VAL(v)	(((v) & EVENT_THRESH_MASK) << 32)
119 #define CNST_THRESH_MASK	CNST_THRESH_VAL(EVENT_THRESH_MASK)
120 
121 #define CNST_EBB_VAL(v)		(((v) & EVENT_EBB_MASK) << 24)
122 #define CNST_EBB_MASK		CNST_EBB_VAL(EVENT_EBB_MASK)
123 
124 #define CNST_IFM_VAL(v)		(((v) & EVENT_IFM_MASK) << 25)
125 #define CNST_IFM_MASK		CNST_IFM_VAL(EVENT_IFM_MASK)
126 
127 #define CNST_L1_QUAL_VAL(v)	(((v) & 3) << 22)
128 #define CNST_L1_QUAL_MASK	CNST_L1_QUAL_VAL(3)
129 
130 #define CNST_SAMPLE_VAL(v)	(((v) & EVENT_SAMPLE_MASK) << 16)
131 #define CNST_SAMPLE_MASK	CNST_SAMPLE_VAL(EVENT_SAMPLE_MASK)
132 
133 #define CNST_CACHE_GROUP_VAL(v)	(((v) & 0xffull) << 55)
134 #define CNST_CACHE_GROUP_MASK	CNST_CACHE_GROUP_VAL(0xff)
135 #define CNST_CACHE_PMC4_VAL	(1ull << 54)
136 #define CNST_CACHE_PMC4_MASK	CNST_CACHE_PMC4_VAL
137 
138 /*
139  * For NC we are counting up to 4 events. This requires three bits, and we need
140  * the fifth event to overflow and set the 4th bit. To achieve that we bias the
141  * fields by 3 in test_adder.
142  */
143 #define CNST_NC_SHIFT		12
144 #define CNST_NC_VAL		(1 << CNST_NC_SHIFT)
145 #define CNST_NC_MASK		(8 << CNST_NC_SHIFT)
146 #define ISA207_TEST_ADDER	(3 << CNST_NC_SHIFT)
147 
148 /*
149  * For the per-PMC fields we have two bits. The low bit is added, so if two
150  * events ask for the same PMC the sum will overflow, setting the high bit,
151  * indicating an error. So our mask sets the high bit.
152  */
153 #define CNST_PMC_SHIFT(pmc)	((pmc - 1) * 2)
154 #define CNST_PMC_VAL(pmc)	(1 << CNST_PMC_SHIFT(pmc))
155 #define CNST_PMC_MASK(pmc)	(2 << CNST_PMC_SHIFT(pmc))
156 
157 /* Our add_fields is defined as: */
158 #define ISA207_ADD_FIELDS	\
159 	CNST_PMC_VAL(1) | CNST_PMC_VAL(2) | CNST_PMC_VAL(3) | \
160 	CNST_PMC_VAL(4) | CNST_PMC_VAL(5) | CNST_PMC_VAL(6) | CNST_NC_VAL
161 
162 /* Bits in MMCR1 for PowerISA v2.07 */
163 #define MMCR1_UNIT_SHIFT(pmc)		(60 - (4 * ((pmc) - 1)))
164 #define MMCR1_COMBINE_SHIFT(pmc)	(35 - ((pmc) - 1))
165 #define MMCR1_PMCSEL_SHIFT(pmc)		(24 - (((pmc) - 1)) * 8)
166 #define MMCR1_FAB_SHIFT			36
167 #define MMCR1_DC_IC_QUAL_MASK		0x3
168 #define MMCR1_DC_IC_QUAL_SHIFT		46
169 
170 /* MMCR1 Combine bits macro for power9 */
171 #define p9_MMCR1_COMBINE_SHIFT(pmc)	(38 - ((pmc - 1) * 2))
172 
173 /* Bits in MMCRA for PowerISA v2.07 */
174 #define MMCRA_SAMP_MODE_SHIFT		1
175 #define MMCRA_SAMP_ELIG_SHIFT		4
176 #define MMCRA_THR_CTL_SHIFT		8
177 #define MMCRA_THR_SEL_SHIFT		16
178 #define MMCRA_THR_CMP_SHIFT		32
179 #define MMCRA_SDAR_MODE_SHIFT		42
180 #define MMCRA_SDAR_MODE_TLB		(1ull << MMCRA_SDAR_MODE_SHIFT)
181 #define MMCRA_SDAR_MODE_NO_UPDATES	~(0x3ull << MMCRA_SDAR_MODE_SHIFT)
182 #define MMCRA_SDAR_MODE_DCACHE		(2ull << MMCRA_SDAR_MODE_SHIFT)
183 #define MMCRA_IFM_SHIFT			30
184 #define MMCRA_THR_CTR_MANT_SHIFT	19
185 #define MMCRA_THR_CTR_MANT_MASK		0x7Ful
186 #define MMCRA_THR_CTR_MANT(v)		(((v) >> MMCRA_THR_CTR_MANT_SHIFT) &\
187 						MMCRA_THR_CTR_MANT_MASK)
188 
189 #define MMCRA_THR_CTR_EXP_SHIFT		27
190 #define MMCRA_THR_CTR_EXP_MASK		0x7ul
191 #define MMCRA_THR_CTR_EXP(v)		(((v) >> MMCRA_THR_CTR_EXP_SHIFT) &\
192 						MMCRA_THR_CTR_EXP_MASK)
193 
194 /* MMCR1 Threshold Compare bit constant for power9 */
195 #define p9_MMCRA_THR_CMP_SHIFT	45
196 
197 /* Bits in MMCR2 for PowerISA v2.07 */
198 #define MMCR2_FCS(pmc)			(1ull << (63 - (((pmc) - 1) * 9)))
199 #define MMCR2_FCP(pmc)			(1ull << (62 - (((pmc) - 1) * 9)))
200 #define MMCR2_FCH(pmc)			(1ull << (57 - (((pmc) - 1) * 9)))
201 
202 #define MAX_ALT				2
203 #define MAX_PMU_COUNTERS		6
204 
205 #define ISA207_SIER_TYPE_SHIFT		15
206 #define ISA207_SIER_TYPE_MASK		(0x7ull << ISA207_SIER_TYPE_SHIFT)
207 
208 #define ISA207_SIER_LDST_SHIFT		1
209 #define ISA207_SIER_LDST_MASK		(0x7ull << ISA207_SIER_LDST_SHIFT)
210 
211 #define ISA207_SIER_DATA_SRC_SHIFT	53
212 #define ISA207_SIER_DATA_SRC_MASK	(0x7ull << ISA207_SIER_DATA_SRC_SHIFT)
213 
214 #define P(a, b)				PERF_MEM_S(a, b)
215 #define PH(a, b)			(P(LVL, HIT) | P(a, b))
216 #define PM(a, b)			(P(LVL, MISS) | P(a, b))
217 
218 int isa207_get_constraint(u64 event, unsigned long *maskp, unsigned long *valp);
219 int isa207_compute_mmcr(u64 event[], int n_ev,
220 				unsigned int hwc[], unsigned long mmcr[],
221 				struct perf_event *pevents[]);
222 void isa207_disable_pmc(unsigned int pmc, unsigned long mmcr[]);
223 int isa207_get_alternatives(u64 event, u64 alt[], int size, unsigned int flags,
224 					const unsigned int ev_alt[][MAX_ALT]);
225 void isa207_get_mem_data_src(union perf_mem_data_src *dsrc, u32 flags,
226 							struct pt_regs *regs);
227 void isa207_get_mem_weight(u64 *weight);
228 
229 #endif
230