lkml.org 
[lkml]   [2017]   [Nov]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH V4 6/8] perf/x86/intel/uncore: SKX support for IIO free running counters
    Date
    From: Kan Liang <Kan.liang@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.

    The free running counter is read-only and always active. Counting will
    be suspended only when the IIO Box is powered down.

    There are three types of IIO free running counters on Skylake server, IO
    CLOCKS counter, BANDWIDTH counters and UTILIZATION counters.
    IO CLOCKS counter is to count IO clocks.
    BANDWIDTH counters are to count inbound(PCIe->CPU)/outbound(CPU->PCIe)
    bandwidth.
    UTILIZATION counters are to count input/output utilization.

    The bit width of the free running counters is 36-bits.

    Signed-off-by: Kan Liang <Kan.liang@intel.com>
    ---

    No changes since V3

    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..4ee1e86 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_type_id {
    + SKX_IIO_MSR_IOCLK = 0,
    + SKX_IIO_MSR_BW = 1,
    + SKX_IIO_MSR_UTIL = 2,
    +
    + SKX_IIO_FREERUNNING_TYPE_MAX,
    +};
    +
    +
    +static struct freerunning_counters skx_iio_freerunning[] = {
    + [SKX_IIO_MSR_IOCLK] = { 0xa45, 0x1, 0x20, 1, 36 },
    + [SKX_IIO_MSR_BW] = { 0xb00, 0x1, 0x10, 8, 36 },
    + [SKX_IIO_MSR_UTIL] = { 0xb08, 0x1, 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_TYPE_MAX,
    + .freerunning = skx_iio_freerunning,
    .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
    \
     
     \ /
      Last update: 2017-11-02 21:30    [W:4.077 / U:0.192 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site