perf/x86/intel: Add Ivy Bridge-EP uncore IRP box support
Unlike other uncore boxes, IRP boxes live in PCI buses with no UBOX
device. For PCI bus without UBOX device, we find the next bus that
has UBOX device and use its 'bus to socket' mapping.
Besides the counter/control registers in IRP boxes are not properly
aligned.
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: eranian@google.com
Cc: "Yan Zheng" <zheng.z.yan@intel.com>
Link: http://lkml.kernel.org/r/1383197815-17706-2-git-send-email-zheng.z.yan@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.c b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
index 6da3999..29c2487 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_uncore.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
@@ -997,6 +997,20 @@
}
}
+ if (!err) {
+ /*
+ * For PCI bus with no UBOX device, find the next bus
+ * that has UBOX device and use its mapping.
+ */
+ i = -1;
+ for (bus = 255; bus >= 0; bus--) {
+ if (pcibus_to_physid[bus] >= 0)
+ i = pcibus_to_physid[bus];
+ else
+ pcibus_to_physid[bus] = i;
+ }
+ }
+
if (ubox_dev)
pci_dev_put(ubox_dev);
@@ -1330,6 +1344,59 @@
IVT_UNCORE_PCI_COMMON_INIT(),
};
+/* registers in IRP boxes are not properly aligned */
+static unsigned ivt_uncore_irp_ctls[] = {0xd8, 0xdc, 0xe0, 0xe4};
+static unsigned ivt_uncore_irp_ctrs[] = {0xa0, 0xb0, 0xb8, 0xc0};
+
+static void ivt_uncore_irp_enable_event(struct intel_uncore_box *box, struct perf_event *event)
+{
+ struct pci_dev *pdev = box->pci_dev;
+ struct hw_perf_event *hwc = &event->hw;
+
+ pci_write_config_dword(pdev, ivt_uncore_irp_ctls[hwc->idx],
+ hwc->config | SNBEP_PMON_CTL_EN);
+}
+
+static void ivt_uncore_irp_disable_event(struct intel_uncore_box *box, struct perf_event *event)
+{
+ struct pci_dev *pdev = box->pci_dev;
+ struct hw_perf_event *hwc = &event->hw;
+
+ pci_write_config_dword(pdev, ivt_uncore_irp_ctls[hwc->idx], hwc->config);
+}
+
+static u64 ivt_uncore_irp_read_counter(struct intel_uncore_box *box, struct perf_event *event)
+{
+ struct pci_dev *pdev = box->pci_dev;
+ struct hw_perf_event *hwc = &event->hw;
+ u64 count = 0;
+
+ pci_read_config_dword(pdev, ivt_uncore_irp_ctrs[hwc->idx], (u32 *)&count);
+ pci_read_config_dword(pdev, ivt_uncore_irp_ctrs[hwc->idx] + 4, (u32 *)&count + 1);
+
+ return count;
+}
+
+static struct intel_uncore_ops ivt_uncore_irp_ops = {
+ .init_box = ivt_uncore_pci_init_box,
+ .disable_box = snbep_uncore_pci_disable_box,
+ .enable_box = snbep_uncore_pci_enable_box,
+ .disable_event = ivt_uncore_irp_disable_event,
+ .enable_event = ivt_uncore_irp_enable_event,
+ .read_counter = ivt_uncore_irp_read_counter,
+};
+
+static struct intel_uncore_type ivt_uncore_irp = {
+ .name = "irp",
+ .num_counters = 4,
+ .num_boxes = 1,
+ .perf_ctr_bits = 48,
+ .event_mask = IVT_PMON_RAW_EVENT_MASK,
+ .box_ctl = SNBEP_PCI_PMON_BOX_CTL,
+ .ops = &ivt_uncore_irp_ops,
+ .format_group = &ivt_uncore_format_group,
+};
+
static struct intel_uncore_ops ivt_uncore_qpi_ops = {
.init_box = ivt_uncore_pci_init_box,
.disable_box = snbep_uncore_pci_disable_box,
@@ -1377,6 +1444,7 @@
enum {
IVT_PCI_UNCORE_HA,
IVT_PCI_UNCORE_IMC,
+ IVT_PCI_UNCORE_IRP,
IVT_PCI_UNCORE_QPI,
IVT_PCI_UNCORE_R2PCIE,
IVT_PCI_UNCORE_R3QPI,
@@ -1385,6 +1453,7 @@
static struct intel_uncore_type *ivt_pci_uncores[] = {
[IVT_PCI_UNCORE_HA] = &ivt_uncore_ha,
[IVT_PCI_UNCORE_IMC] = &ivt_uncore_imc,
+ [IVT_PCI_UNCORE_IRP] = &ivt_uncore_irp,
[IVT_PCI_UNCORE_QPI] = &ivt_uncore_qpi,
[IVT_PCI_UNCORE_R2PCIE] = &ivt_uncore_r2pcie,
[IVT_PCI_UNCORE_R3QPI] = &ivt_uncore_r3qpi,
@@ -1432,6 +1501,10 @@
PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xef1),
.driver_data = UNCORE_PCI_DEV_DATA(IVT_PCI_UNCORE_IMC, 7),
},
+ { /* IRP */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xe39),
+ .driver_data = UNCORE_PCI_DEV_DATA(IVT_PCI_UNCORE_IRP, 0),
+ },
{ /* QPI0 Port 0 */
PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xe32),
.driver_data = UNCORE_PCI_DEV_DATA(IVT_PCI_UNCORE_QPI, 0),