Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751631AbeAOS6u (ORCPT + 1 other); Mon, 15 Jan 2018 13:58:50 -0500 Received: from mga11.intel.com ([192.55.52.93]:2466 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751278AbeAOS6I (ORCPT ); Mon, 15 Jan 2018 13:58:08 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.46,364,1511856000"; d="scan'208";a="11038427" From: kan.liang@intel.com To: tglx@linutronix.de, mingo@redhat.com, peterz@infradead.org, linux-kernel@vger.kernel.org Cc: acme@kernel.org, eranian@google.com, ak@linux.intel.com, Kan Liang Subject: [PATCH V5 6/8] perf/x86/intel/uncore: SKX support for IIO free running counters Date: Mon, 15 Jan 2018 10:57:07 -0800 Message-Id: <1516042629-387021-6-git-send-email-kan.liang@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1516042629-387021-1-git-send-email-kan.liang@intel.com> References: <1516042629-387021-1-git-send-email-kan.liang@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: From: Kan Liang 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 Reviewed-by: Thomas Gleixner --- Change since V4: - Add reviewed-by 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 6d8044a..0e2daca 100644 --- a/arch/x86/events/intel/uncore_snbep.c +++ b/arch/x86/events/intel/uncore_snbep.c @@ -3468,6 +3468,61 @@ 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, @@ -3479,8 +3534,11 @@ 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