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-rw-r--r--arch/x86/kernel/cpu/perf_event_intel_uncore.c195
-rw-r--r--arch/x86/kernel/cpu/perf_event_intel_uncore.h50
2 files changed, 245 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.c b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
index fe76a07dfdbc..3ed941ac3745 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_uncore.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
@@ -10,6 +10,192 @@ static cpumask_t uncore_cpu_mask;
10static struct event_constraint constraint_fixed = 10static struct event_constraint constraint_fixed =
11 EVENT_CONSTRAINT(~0ULL, 1 << UNCORE_PMC_IDX_FIXED, ~0ULL); 11 EVENT_CONSTRAINT(~0ULL, 1 << UNCORE_PMC_IDX_FIXED, ~0ULL);
12 12
13DEFINE_UNCORE_FORMAT_ATTR(event, event, "config:0-7");
14DEFINE_UNCORE_FORMAT_ATTR(umask, umask, "config:8-15");
15DEFINE_UNCORE_FORMAT_ATTR(edge, edge, "config:18");
16DEFINE_UNCORE_FORMAT_ATTR(inv, inv, "config:23");
17DEFINE_UNCORE_FORMAT_ATTR(cmask5, cmask, "config:24-28");
18DEFINE_UNCORE_FORMAT_ATTR(cmask8, cmask, "config:24-31");
19
20/* Sandy Bridge uncore support */
21static void snb_uncore_msr_enable_event(struct intel_uncore_box *box,
22 struct perf_event *event)
23{
24 struct hw_perf_event *hwc = &event->hw;
25
26 if (hwc->idx < UNCORE_PMC_IDX_FIXED)
27 wrmsrl(hwc->config_base, hwc->config | SNB_UNC_CTL_EN);
28 else
29 wrmsrl(hwc->config_base, SNB_UNC_CTL_EN);
30}
31
32static void snb_uncore_msr_disable_event(struct intel_uncore_box *box,
33 struct perf_event *event)
34{
35 wrmsrl(event->hw.config_base, 0);
36}
37
38static u64 snb_uncore_msr_read_counter(struct intel_uncore_box *box,
39 struct perf_event *event)
40{
41 u64 count;
42 rdmsrl(event->hw.event_base, count);
43 return count;
44}
45
46static void snb_uncore_msr_init_box(struct intel_uncore_box *box)
47{
48 if (box->pmu->pmu_idx == 0) {
49 wrmsrl(SNB_UNC_PERF_GLOBAL_CTL,
50 SNB_UNC_GLOBAL_CTL_EN | SNB_UNC_GLOBAL_CTL_CORE_ALL);
51 }
52}
53
54static struct attribute *snb_uncore_formats_attr[] = {
55 &format_attr_event.attr,
56 &format_attr_umask.attr,
57 &format_attr_edge.attr,
58 &format_attr_inv.attr,
59 &format_attr_cmask5.attr,
60 NULL,
61};
62
63static struct attribute_group snb_uncore_format_group = {
64 .name = "format",
65 .attrs = snb_uncore_formats_attr,
66};
67
68static struct intel_uncore_ops snb_uncore_msr_ops = {
69 .init_box = snb_uncore_msr_init_box,
70 .disable_event = snb_uncore_msr_disable_event,
71 .enable_event = snb_uncore_msr_enable_event,
72 .read_counter = snb_uncore_msr_read_counter,
73};
74
75static struct event_constraint snb_uncore_cbox_constraints[] = {
76 UNCORE_EVENT_CONSTRAINT(0x80, 0x1),
77 UNCORE_EVENT_CONSTRAINT(0x83, 0x1),
78 EVENT_CONSTRAINT_END
79};
80
81static struct intel_uncore_type snb_uncore_cbox = {
82 .name = "cbox",
83 .num_counters = 2,
84 .num_boxes = 4,
85 .perf_ctr_bits = 44,
86 .fixed_ctr_bits = 48,
87 .perf_ctr = SNB_UNC_CBO_0_PER_CTR0,
88 .event_ctl = SNB_UNC_CBO_0_PERFEVTSEL0,
89 .fixed_ctr = SNB_UNC_FIXED_CTR,
90 .fixed_ctl = SNB_UNC_FIXED_CTR_CTRL,
91 .single_fixed = 1,
92 .event_mask = SNB_UNC_RAW_EVENT_MASK,
93 .msr_offset = SNB_UNC_CBO_MSR_OFFSET,
94 .constraints = snb_uncore_cbox_constraints,
95 .ops = &snb_uncore_msr_ops,
96 .format_group = &snb_uncore_format_group,
97};
98
99static struct intel_uncore_type *snb_msr_uncores[] = {
100 &snb_uncore_cbox,
101 NULL,
102};
103/* end of Sandy Bridge uncore support */
104
105/* Nehalem uncore support */
106static void nhm_uncore_msr_disable_box(struct intel_uncore_box *box)
107{
108 wrmsrl(NHM_UNC_PERF_GLOBAL_CTL, 0);
109}
110
111static void nhm_uncore_msr_enable_box(struct intel_uncore_box *box)
112{
113 wrmsrl(NHM_UNC_PERF_GLOBAL_CTL,
114 NHM_UNC_GLOBAL_CTL_EN_PC_ALL | NHM_UNC_GLOBAL_CTL_EN_FC);
115}
116
117static void nhm_uncore_msr_enable_event(struct intel_uncore_box *box,
118 struct perf_event *event)
119{
120 struct hw_perf_event *hwc = &event->hw;
121
122 if (hwc->idx < UNCORE_PMC_IDX_FIXED)
123 wrmsrl(hwc->config_base, hwc->config | SNB_UNC_CTL_EN);
124 else
125 wrmsrl(hwc->config_base, NHM_UNC_FIXED_CTR_CTL_EN);
126}
127
128static struct attribute *nhm_uncore_formats_attr[] = {
129 &format_attr_event.attr,
130 &format_attr_umask.attr,
131 &format_attr_edge.attr,
132 &format_attr_inv.attr,
133 &format_attr_cmask8.attr,
134 NULL,
135};
136
137static struct attribute_group nhm_uncore_format_group = {
138 .name = "format",
139 .attrs = nhm_uncore_formats_attr,
140};
141
142static struct uncore_event_desc nhm_uncore_events[] = {
143 INTEL_UNCORE_EVENT_DESC(CLOCKTICKS, "config=0xffff"),
144 /* full cache line writes to DRAM */
145 INTEL_UNCORE_EVENT_DESC(QMC_WRITES_FULL_ANY, "event=0x2f,umask=0xf"),
146 /* Quickpath Memory Controller normal priority read requests */
147 INTEL_UNCORE_EVENT_DESC(QMC_NORMAL_READS_ANY, "event=0x2c,umask=0xf"),
148 /* Quickpath Home Logic read requests from the IOH */
149 INTEL_UNCORE_EVENT_DESC(QHL_REQUEST_IOH_READS,
150 "event=0x20,umask=0x1"),
151 /* Quickpath Home Logic write requests from the IOH */
152 INTEL_UNCORE_EVENT_DESC(QHL_REQUEST_IOH_WRITES,
153 "event=0x20,umask=0x2"),
154 /* Quickpath Home Logic read requests from a remote socket */
155 INTEL_UNCORE_EVENT_DESC(QHL_REQUEST_REMOTE_READS,
156 "event=0x20,umask=0x4"),
157 /* Quickpath Home Logic write requests from a remote socket */
158 INTEL_UNCORE_EVENT_DESC(QHL_REQUEST_REMOTE_WRITES,
159 "event=0x20,umask=0x8"),
160 /* Quickpath Home Logic read requests from the local socket */
161 INTEL_UNCORE_EVENT_DESC(QHL_REQUEST_LOCAL_READS,
162 "event=0x20,umask=0x10"),
163 /* Quickpath Home Logic write requests from the local socket */
164 INTEL_UNCORE_EVENT_DESC(QHL_REQUEST_LOCAL_WRITES,
165 "event=0x20,umask=0x20"),
166 { /* end: all zeroes */ },
167};
168
169static struct intel_uncore_ops nhm_uncore_msr_ops = {
170 .disable_box = nhm_uncore_msr_disable_box,
171 .enable_box = nhm_uncore_msr_enable_box,
172 .disable_event = snb_uncore_msr_disable_event,
173 .enable_event = nhm_uncore_msr_enable_event,
174 .read_counter = snb_uncore_msr_read_counter,
175};
176
177static struct intel_uncore_type nhm_uncore = {
178 .name = "",
179 .num_counters = 8,
180 .num_boxes = 1,
181 .perf_ctr_bits = 48,
182 .fixed_ctr_bits = 48,
183 .event_ctl = NHM_UNC_PERFEVTSEL0,
184 .perf_ctr = NHM_UNC_UNCORE_PMC0,
185 .fixed_ctr = NHM_UNC_FIXED_CTR,
186 .fixed_ctl = NHM_UNC_FIXED_CTR_CTRL,
187 .event_mask = NHM_UNC_RAW_EVENT_MASK,
188 .event_descs = nhm_uncore_events,
189 .ops = &nhm_uncore_msr_ops,
190 .format_group = &nhm_uncore_format_group,
191};
192