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authorYan, Zheng <zheng.z.yan@intel.com>2013-10-31 13:36:55 +0800
committerIngo Molnar <mingo@kernel.org>2013-11-06 12:34:31 +0100
commitf891d8cfb8372eb9cfe9d0d4ca61c75bafeaae37 (patch)
treeae3b266e611589af98fddb11b5c8d074a6a657c5
parentd1e8f4a8365d16fd179cb8cad5b4d20aafd0a695 (diff)
downloadlinux-f891d8cfb8372eb9cfe9d0d4ca61c75bafeaae37.tar.bz2
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>
-rw-r--r--arch/x86/kernel/cpu/perf_event_intel_uncore.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.c b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
index 6da399943ac6..29c248799ced 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 @@ static int snbep_pci2phy_map_init(int devid)
}
}
+ 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 @@ static struct intel_uncore_type ivt_uncore_imc = {
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 @@ static struct intel_uncore_type ivt_uncore_r3qpi = {
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 @@ enum {
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 @@ static DEFINE_PCI_DEVICE_TABLE(ivt_uncore_pci_ids) = {
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),