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authorDavid S. Miller <davem@davemloft.net>2009-09-10 07:22:18 -0700
committerDavid S. Miller <davem@davemloft.net>2009-09-10 07:42:02 -0700
commitb73d884756303316ead4cd7dad51236b2a515a1a (patch)
treea118f6a77c5ed20930f8c198f3ecfb9c9909e123 /arch/sparc/kernel
parent660d13765f342ecb6e774fcbc35b64beb0a069da (diff)
sparc64: Initial niagara2 perf counter support.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel')
-rw-r--r--arch/sparc/kernel/perf_counter.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/sparc/kernel/perf_counter.c b/arch/sparc/kernel/perf_counter.c
index f3b8ccca3c9..09de4035eaa 100644
--- a/arch/sparc/kernel/perf_counter.c
+++ b/arch/sparc/kernel/perf_counter.c
@@ -102,6 +102,32 @@ static const struct sparc_pmu ultra3i_pmu = {
.lower_nop = 0x14,
};
+static const struct perf_event_map niagara2_perfmon_event_map[] = {
+ [PERF_COUNT_HW_CPU_CYCLES] = { 0x02ff, PIC_UPPER | PIC_LOWER },
+ [PERF_COUNT_HW_INSTRUCTIONS] = { 0x02ff, PIC_UPPER | PIC_LOWER },
+ [PERF_COUNT_HW_CACHE_REFERENCES] = { 0x0208, PIC_UPPER | PIC_LOWER },
+ [PERF_COUNT_HW_CACHE_MISSES] = { 0x0302, PIC_UPPER | PIC_LOWER },
+ [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = { 0x0201, PIC_UPPER | PIC_LOWER },
+ [PERF_COUNT_HW_BRANCH_MISSES] = { 0x0202, PIC_UPPER | PIC_LOWER },
+};
+
+static const struct perf_event_map *niagara2_event_map(int event)
+{
+ return &niagara2_perfmon_event_map[event];
+}
+
+static const struct sparc_pmu niagara2_pmu = {
+ .event_map = niagara2_event_map,
+ .max_events = ARRAY_SIZE(niagara2_perfmon_event_map),
+ .upper_shift = 19,
+ .lower_shift = 6,
+ .event_mask = 0xfff,
+ .hv_bit = 0x8,
+ .irq_bit = 0x03,
+ .upper_nop = 0x220,
+ .lower_nop = 0x220,
+};
+
static const struct sparc_pmu *sparc_pmu __read_mostly;
static u64 event_encoding(u64 event, int idx)
@@ -504,6 +530,10 @@ static bool __init supported_pmu(void)
sparc_pmu = &ultra3i_pmu;
return true;
}
+ if (!strcmp(sparc_pmu_type, "niagara2")) {
+ sparc_pmu = &niagara2_pmu;
+ return true;
+ }
return false;
}