From: Kan Liang <kan.li...@intel.com>
As of Skylake Server, there are a number of free-running counters in
each IIO Box that collect counts for per box IO clocks and per Port
Input/Output x BW/Utilization.
Freerunning counters cannot be written by SW. Counting will be suspended
only when the IIO Box is powered down.
The bit width of freerunning counter is 36-bit.
Signed-off-by: Kan Liang <kan.li...@intel.com>
---
Changes since V1:
- Split the patch for SKX support
arch/x86/events/intel/uncore_snbep.c | 58 ++++++++++++++++++++++++++++++++++++
1 file changed, 58 insertions(+)
diff --git a/arch/x86/events/intel/uncore_snbep.c
b/arch/x86/events/intel/uncore_snbep.c
index db1fe37..5c8ba6b 100644
--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -3459,6 +3459,61 @@ static struct intel_uncore_ops skx_uncore_iio_ops = {
.read_counter = uncore_msr_read_counter,
};
+enum perf_uncore_iio_freerunning_msr_type_id {
+ SKX_IIO_MSR_IOCLK = 0,
+ SKX_IIO_MSR_BW = 1,
+ SKX_IIO_MSR_UTIL = 2,
+
+ SKX_IIO_FREERUNNING_MSR_TYPE_MAX,
+};
+
+
+static struct freerunning_msr skx_iio_freerunning_msr[] = {
+ [SKX_IIO_MSR_IOCLK] = { 0xa45, 0x20, 1, 36 },
+ [SKX_IIO_MSR_BW] = { 0xb00, 0x10, 8, 36 },
+ [SKX_IIO_MSR_UTIL] = { 0xb08, 0x10, 8, 36 },
+};
+
+static struct uncore_event_desc skx_uncore_iio_events[] = {
+ /* Free-Running IO CLOCKS Counter */
+ INTEL_UNCORE_EVENT_DESC(ioclk,
"event=0xff,umask=0x10"),
+ /* Free-Running IIO Bandwidth Counters */
+ INTEL_UNCORE_EVENT_DESC(bw_in_port0,
"event=0xff,umask=0x20"),
+ INTEL_UNCORE_EVENT_DESC(bw_in_port0.scale, "3.814697266e-6"),
+ INTEL_UNCORE_EVENT_DESC(bw_in_port0.unit, "MiB"),
+ INTEL_UNCORE_EVENT_DESC(bw_in_port1,
"event=0xff,umask=0x21"),
+ INTEL_UNCORE_EVENT_DESC(bw_in_port1.scale, "3.814697266e-6"),
+ INTEL_UNCORE_EVENT_DESC(bw_in_port1.unit, "MiB"),
+ INTEL_UNCORE_EVENT_DESC(bw_in_port2,
"event=0xff,umask=0x22"),
+ INTEL_UNCORE_EVENT_DESC(bw_in_port2.scale, "3.814697266e-6"),
+ INTEL_UNCORE_EVENT_DESC(bw_in_port2.unit, "MiB"),
+ INTEL_UNCORE_EVENT_DESC(bw_in_port3,
"event=0xff,umask=0x23"),
+ INTEL_UNCORE_EVENT_DESC(bw_in_port3.scale, "3.814697266e-6"),
+ INTEL_UNCORE_EVENT_DESC(bw_in_port3.unit, "MiB"),
+ INTEL_UNCORE_EVENT_DESC(bw_out_port0,
"event=0xff,umask=0x24"),
+ INTEL_UNCORE_EVENT_DESC(bw_out_port0.scale, "3.814697266e-6"),
+ INTEL_UNCORE_EVENT_DESC(bw_out_port0.unit, "MiB"),
+ INTEL_UNCORE_EVENT_DESC(bw_out_port1,
"event=0xff,umask=0x25"),
+ INTEL_UNCORE_EVENT_DESC(bw_out_port1.scale, "3.814697266e-6"),
+ INTEL_UNCORE_EVENT_DESC(bw_out_port1.unit, "MiB"),
+ INTEL_UNCORE_EVENT_DESC(bw_out_port2,
"event=0xff,umask=0x26"),
+ INTEL_UNCORE_EVENT_DESC(bw_out_port2.scale, "3.814697266e-6"),
+ INTEL_UNCORE_EVENT_DESC(bw_out_port2.unit, "MiB"),
+ INTEL_UNCORE_EVENT_DESC(bw_out_port3,
"event=0xff,umask=0x27"),
+ INTEL_UNCORE_EVENT_DESC(bw_out_port3.scale, "3.814697266e-6"),
+ INTEL_UNCORE_EVENT_DESC(bw_out_port3.unit, "MiB"),
+ /* Free-running IIO Utilization Counters */
+ INTEL_UNCORE_EVENT_DESC(util_in_port0,
"event=0xff,umask=0x30"),
+ INTEL_UNCORE_EVENT_DESC(util_out_port0,
"event=0xff,umask=0x31"),
+ INTEL_UNCORE_EVENT_DESC(util_in_port1,
"event=0xff,umask=0x32"),
+ INTEL_UNCORE_EVENT_DESC(util_out_port1,
"event=0xff,umask=0x33"),
+ INTEL_UNCORE_EVENT_DESC(util_in_port2,
"event=0xff,umask=0x34"),
+ INTEL_UNCORE_EVENT_DESC(util_out_port2,
"event=0xff,umask=0x35"),
+ INTEL_UNCORE_EVENT_DESC(util_in_port3,
"event=0xff,umask=0x36"),
+ INTEL_UNCORE_EVENT_DESC(util_out_port3,
"event=0xff,umask=0x37"),
+ { /* end: all zeroes */ },
+};
+
static struct intel_uncore_type skx_uncore_iio = {
.name = "iio",
.num_counters = 4,
@@ -3470,8 +3525,11 @@ static struct intel_uncore_type skx_uncore_iio = {
.event_mask_ext = SKX_IIO_PMON_RAW_EVENT_MASK_EXT,
.box_ctl = SKX_IIO0_MSR_PMON_BOX_CTL,
.msr_offset = SKX_IIO_MSR_OFFSET,
+ .num_freerunning_types = SKX_IIO_FREERUNNING_MSR_TYPE_MAX,
+ .freerunning = skx_iio_freerunning_msr,
.constraints = skx_uncore_iio_constraints,
.ops = &skx_uncore_iio_ops,
+ .event_descs = skx_uncore_iio_events,
.format_group = &skx_uncore_iio_format_group,
};
--
2.7.4
