From 521e8bac67a71a6544274f39d5c61473e0e54ac0 Mon Sep 17 00:00:00 2001 From: Stephane Eranian Date: Wed, 17 Sep 2014 11:06:16 +0200 Subject: [PATCH] perf/x86/intel/uncore: Update support for client uncore IMC PMU This patch restructures the memory controller (IMC) uncore PMU support for client SNB/IVB/HSW processors. The main change is that it can now cope with more than one PCI device ID per processor model. There are many flavors of memory controllers for each processor. They have different PCI device ID, yet they behave the same w.r.t. the memory controller PMU that we are interested in. The patch now supports two distinct memory controllers for IVB processors: one for mobile, one for desktop. Signed-off-by: Stephane Eranian Signed-off-by: Peter Zijlstra (Intel) Link: http://lkml.kernel.org/r/20140917090616.GA11281@quad Cc: ak@linux.intel.com Cc: kan.liang@intel.com Cc: Arnaldo Carvalho de Melo Cc: Bjorn Helgaas Cc: Linus Torvalds Signed-off-by: Ingo Molnar --- .../kernel/cpu/perf_event_intel_uncore_snb.c | 69 ++++++++++++++----- include/linux/pci_ids.h | 1 + 2 files changed, 52 insertions(+), 18 deletions(-) diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore_snb.c b/arch/x86/kernel/cpu/perf_event_intel_uncore_snb.c index e0e934c8ee77..3001015b755c 100644 --- a/arch/x86/kernel/cpu/perf_event_intel_uncore_snb.c +++ b/arch/x86/kernel/cpu/perf_event_intel_uncore_snb.c @@ -460,6 +460,10 @@ static const struct pci_device_id ivb_uncore_pci_ids[] = { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_IMC), .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0), }, + { /* IMC */ + PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_E3_IMC), + .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0), + }, { /* end: all zeroes */ }, }; @@ -486,34 +490,63 @@ static struct pci_driver hsw_uncore_pci_driver = { .id_table = hsw_uncore_pci_ids, }; -int snb_uncore_pci_init(void) +struct imc_uncore_pci_dev { + __u32 pci_id; + struct pci_driver *driver; +}; +#define IMC_DEV(a, d) \ + { .pci_id = PCI_DEVICE_ID_INTEL_##a, .driver = (d) } + +static const struct imc_uncore_pci_dev desktop_imc_pci_ids[] = { + IMC_DEV(SNB_IMC, &snb_uncore_pci_driver), + IMC_DEV(IVB_IMC, &ivb_uncore_pci_driver), /* 3rd Gen Core processor */ + IMC_DEV(IVB_E3_IMC, &ivb_uncore_pci_driver), /* Xeon E3-1200 v2/3rd Gen Core processor */ + IMC_DEV(HSW_IMC, &hsw_uncore_pci_driver), /* 4th Gen Core Processor */ + { /* end marker */ } +}; + + +#define for_each_imc_pci_id(x, t) \ + for (x = (t); (x)->pci_id; x++) + +static struct pci_driver *imc_uncore_find_dev(void) { - int ret = snb_pci2phy_map_init(PCI_DEVICE_ID_INTEL_SNB_IMC); - if (ret) - return ret; - uncore_pci_uncores = snb_pci_uncores; - uncore_pci_driver = &snb_uncore_pci_driver; - return 0; + const struct imc_uncore_pci_dev *p; + int ret; + + for_each_imc_pci_id(p, desktop_imc_pci_ids) { + ret = snb_pci2phy_map_init(p->pci_id); + if (ret == 0) + return p->driver; + } + return NULL; } -int ivb_uncore_pci_init(void) +static int imc_uncore_pci_init(void) { - int ret = snb_pci2phy_map_init(PCI_DEVICE_ID_INTEL_IVB_IMC); - if (ret) - return ret; + struct pci_driver *imc_drv = imc_uncore_find_dev(); + + if (!imc_drv) + return -ENODEV; + uncore_pci_uncores = snb_pci_uncores; - uncore_pci_driver = &ivb_uncore_pci_driver; + uncore_pci_driver = imc_drv; + return 0; } +int snb_uncore_pci_init(void) +{ + return imc_uncore_pci_init(); +} + +int ivb_uncore_pci_init(void) +{ + return imc_uncore_pci_init(); +} int hsw_uncore_pci_init(void) { - int ret = snb_pci2phy_map_init(PCI_DEVICE_ID_INTEL_HSW_IMC); - if (ret) - return ret; - uncore_pci_uncores = snb_pci_uncores; - uncore_pci_driver = &hsw_uncore_pci_driver; - return 0; + return imc_uncore_pci_init(); } /* end of Sandy Bridge uncore support */ diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 6ed0bb73a864..3102b7e3b460 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2536,6 +2536,7 @@ #define PCI_DEVICE_ID_INTEL_EESSC 0x0008 #define PCI_DEVICE_ID_INTEL_SNB_IMC 0x0100 #define PCI_DEVICE_ID_INTEL_IVB_IMC 0x0154 +#define PCI_DEVICE_ID_INTEL_IVB_E3_IMC 0x0150 #define PCI_DEVICE_ID_INTEL_HSW_IMC 0x0c00 #define PCI_DEVICE_ID_INTEL_PXHD_0 0x0320 #define PCI_DEVICE_ID_INTEL_PXHD_1 0x0321 -- 2.20.1