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Date: Fri, 15 Apr 2016 01:23:40 -0700
From: kan.liang@...el.com
To: peterz@...radead.org, tglx@...utronix.de,
linux-kernel@...r.kernel.org
Cc: ak@...ux.intel.com, eranian@...gle.com,
Kan Liang <kan.liang@...el.com>
Subject: [PATCH 1/1] perf/x86/intel/uncore: Add support for Intel SKL client uncore
From: Kan Liang <kan.liang@...el.com>
This patch addes full support for Intel SKL client uncore.
- Add support for SKL client cpu uncore, which is similar to BDW
client. There are some differences in CBOX number and uncore control
MSR.
- Add new CPU model 78 for SkyLake Mobile, include both cpu and pci
uncore.
- Set and clear enable bit of PERF_GLOBAL_CTL in enable_box/disable_box.
It's because PERF_GLOBAL_CTL could be cleared after Package C7. It's
not enough to only set enable bit in init_box.
Signed-off-by: Kan Liang <kan.liang@...el.com>
---
arch/x86/events/intel/uncore.c | 4 +-
arch/x86/events/intel/uncore.h | 1 +
arch/x86/events/intel/uncore_snb.c | 80 +++++++++++++++++++++++++++++++++++++-
3 files changed, 83 insertions(+), 2 deletions(-)
diff --git a/arch/x86/events/intel/uncore.c b/arch/x86/events/intel/uncore.c
index 16c1789..7fe2f77 100644
--- a/arch/x86/events/intel/uncore.c
+++ b/arch/x86/events/intel/uncore.c
@@ -1361,6 +1361,7 @@ static const struct intel_uncore_init_fun knl_uncore_init __initconst = {
};
static const struct intel_uncore_init_fun skl_uncore_init __initconst = {
+ .cpu_init = skl_uncore_cpu_init,
.pci_init = skl_uncore_pci_init,
};
@@ -1384,7 +1385,8 @@ static const struct x86_cpu_id intel_uncore_match[] __initconst = {
X86_UNCORE_MODEL_MATCH(79, bdx_uncore_init), /* BDX-EP */
X86_UNCORE_MODEL_MATCH(86, bdx_uncore_init), /* BDX-DE */
X86_UNCORE_MODEL_MATCH(87, knl_uncore_init), /* Knights Landing */
- X86_UNCORE_MODEL_MATCH(94, skl_uncore_init), /* SkyLake */
+ X86_UNCORE_MODEL_MATCH(78, skl_uncore_init), /* SkyLake Mobile */
+ X86_UNCORE_MODEL_MATCH(94, skl_uncore_init), /* SkyLake Desktop */
{},
};
diff --git a/arch/x86/events/intel/uncore.h b/arch/x86/events/intel/uncore.h
index 79766b9..798cd89 100644
--- a/arch/x86/events/intel/uncore.h
+++ b/arch/x86/events/intel/uncore.h
@@ -360,6 +360,7 @@ int bdw_uncore_pci_init(void);
int skl_uncore_pci_init(void);
void snb_uncore_cpu_init(void);
void nhm_uncore_cpu_init(void);
+void skl_uncore_cpu_init(void);
int snb_pci2phy_map_init(int devid);
/* perf_event_intel_uncore_snbep.c */
diff --git a/arch/x86/events/intel/uncore_snb.c b/arch/x86/events/intel/uncore_snb.c
index 96531d2..5001ea6 100644
--- a/arch/x86/events/intel/uncore_snb.c
+++ b/arch/x86/events/intel/uncore_snb.c
@@ -1,4 +1,4 @@
-/* Nehalem/SandBridge/Haswell uncore support */
+/* Nehalem/SandBridge/Haswell/Broadwell/Skylake uncore support */
#include "uncore.h"
/* Uncore IMC PCI IDs */
@@ -9,6 +9,7 @@
#define PCI_DEVICE_ID_INTEL_HSW_U_IMC 0x0a04
#define PCI_DEVICE_ID_INTEL_BDW_IMC 0x1604
#define PCI_DEVICE_ID_INTEL_SKL_IMC 0x191f
+#define PCI_DEVICE_ID_INTEL_SKL_U_IMC 0x190c
/* SNB event control */
#define SNB_UNC_CTL_EV_SEL_MASK 0x000000ff
@@ -64,6 +65,10 @@
#define NHM_UNC_PERFEVTSEL0 0x3c0
#define NHM_UNC_UNCORE_PMC0 0x3b0
+/* SKL uncore global control */
+#define SKL_UNC_PERF_GLOBAL_CTL 0xe01
+#define SKL_UNC_GLOBAL_CTL_CORE_ALL ((1 << 5) - 1)
+
DEFINE_UNCORE_FORMAT_ATTR(event, event, "config:0-7");
DEFINE_UNCORE_FORMAT_ATTR(umask, umask, "config:8-15");
DEFINE_UNCORE_FORMAT_ATTR(edge, edge, "config:18");
@@ -179,6 +184,73 @@ void snb_uncore_cpu_init(void)
snb_uncore_cbox.num_boxes = boot_cpu_data.x86_max_cores;
}
+static void skl_uncore_msr_init_box(struct intel_uncore_box *box)
+{
+ if (box->pmu->pmu_idx == 0) {
+ wrmsrl(SKL_UNC_PERF_GLOBAL_CTL,
+ SNB_UNC_GLOBAL_CTL_EN | SKL_UNC_GLOBAL_CTL_CORE_ALL);
+ }
+}
+
+static void skl_uncore_msr_enable_box(struct intel_uncore_box *box)
+{
+ wrmsrl(SKL_UNC_PERF_GLOBAL_CTL,
+ SNB_UNC_GLOBAL_CTL_EN | SKL_UNC_GLOBAL_CTL_CORE_ALL);
+}
+
+static void skl_uncore_msr_disable_box(struct intel_uncore_box *box)
+{
+ wrmsrl(SKL_UNC_PERF_GLOBAL_CTL, 0);
+}
+
+static void skl_uncore_msr_exit_box(struct intel_uncore_box *box)
+{
+ if (box->pmu->pmu_idx == 0)
+ wrmsrl(SKL_UNC_PERF_GLOBAL_CTL, 0);
+}
+
+static struct intel_uncore_ops skl_uncore_msr_ops = {
+ .init_box = skl_uncore_msr_init_box,
+ .enable_box = skl_uncore_msr_enable_box,
+ .disable_box = skl_uncore_msr_disable_box,
+ .exit_box = skl_uncore_msr_exit_box,
+ .disable_event = snb_uncore_msr_disable_event,
+ .enable_event = snb_uncore_msr_enable_event,
+ .read_counter = uncore_msr_read_counter,
+};
+
+static struct intel_uncore_type skl_uncore_cbox = {
+ .name = "cbox",
+ .num_counters = 4,
+ .num_boxes = 5,
+ .perf_ctr_bits = 44,
+ .fixed_ctr_bits = 48,
+ .perf_ctr = SNB_UNC_CBO_0_PER_CTR0,
+ .event_ctl = SNB_UNC_CBO_0_PERFEVTSEL0,
+ .fixed_ctr = SNB_UNC_FIXED_CTR,
+ .fixed_ctl = SNB_UNC_FIXED_CTR_CTRL,
+ .single_fixed = 1,
+ .event_mask = SNB_UNC_RAW_EVENT_MASK,
+ .msr_offset = SNB_UNC_CBO_MSR_OFFSET,
+ .ops = &skl_uncore_msr_ops,
+ .format_group = &snb_uncore_format_group,
+ .event_descs = snb_uncore_events,
+};
+
+static struct intel_uncore_type *skl_msr_uncores[] = {
+ &skl_uncore_cbox,
+ &snb_uncore_arb,
+ NULL,
+};
+
+void skl_uncore_cpu_init(void)
+{
+ uncore_msr_uncores = skl_msr_uncores;
+ if (skl_uncore_cbox.num_boxes > boot_cpu_data.x86_max_cores)
+ skl_uncore_cbox.num_boxes = boot_cpu_data.x86_max_cores;
+ snb_uncore_arb.ops = &skl_uncore_msr_ops;
+}
+
enum {
SNB_PCI_UNCORE_IMC,
};
@@ -544,6 +616,11 @@ static const struct pci_device_id skl_uncore_pci_ids[] = {
PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SKL_IMC),
.driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
},
+ { /* IMC */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SKL_U_IMC),
+ .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
+ },
+
{ /* end: all zeroes */ },
};
@@ -587,6 +664,7 @@ static const struct imc_uncore_pci_dev desktop_imc_pci_ids[] = {
IMC_DEV(HSW_U_IMC, &hsw_uncore_pci_driver), /* 4th Gen Core ULT Mobile Processor */
IMC_DEV(BDW_IMC, &bdw_uncore_pci_driver), /* 5th Gen Core U */
IMC_DEV(SKL_IMC, &skl_uncore_pci_driver), /* 6th Gen Core */
+ IMC_DEV(SKL_U_IMC, &skl_uncore_pci_driver), /* 6th Gen Core U */
{ /* end marker */ }
};
--
2.5.0
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