FreeBSD/Linux Kernel Cross Reference
sys/dev/hwpmc/hwpmc_uncore.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2010 Fabien Thomas
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    
    /*
     * Intel Uncore PMCs.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #include <sys/param.h>
    #include <sys/bus.h>
    #include <sys/pmc.h>
    #include <sys/pmckern.h>
    #include <sys/systm.h>
    
    #include <machine/intr_machdep.h>
    #include <x86/apicvar.h>
    #include <machine/cpu.h>
    #include <machine/cpufunc.h>
    #include <machine/specialreg.h>
    
    #define UCF_PMC_CAPS \
            (PMC_CAP_READ | PMC_CAP_WRITE)
    
    #define UCP_PMC_CAPS \
        (PMC_CAP_EDGE | PMC_CAP_THRESHOLD | PMC_CAP_READ | PMC_CAP_WRITE | \
        PMC_CAP_INVERT | PMC_CAP_QUALIFIER | PMC_CAP_PRECISE)
    
    #define SELECTSEL(x) \
            (((x) == PMC_CPU_INTEL_SANDYBRIDGE || (x) == PMC_CPU_INTEL_HASWELL) ? \
            UCP_CB0_EVSEL0 : UCP_EVSEL0)
    
    #define SELECTOFF(x) \
            (((x) == PMC_CPU_INTEL_SANDYBRIDGE || (x) == PMC_CPU_INTEL_HASWELL) ? \
            UCF_OFFSET_SB : UCF_OFFSET)
    
    static enum pmc_cputype uncore_cputype;
    
    struct uncore_cpu {
            volatile uint32_t       pc_ucfctrl;     /* Fixed function control. */
            volatile uint64_t       pc_globalctrl;  /* Global control register. */
            struct pmc_hw           pc_uncorepmcs[];
    };
    
    static struct uncore_cpu **uncore_pcpu;
    
    static uint64_t uncore_pmcmask;
    
    static int uncore_ucf_ri;               /* relative index of fixed counters */
    static int uncore_ucf_width;
    static int uncore_ucf_npmc;
    
    static int uncore_ucp_width;
    static int uncore_ucp_npmc;
    
    static int
    uncore_pcpu_noop(struct pmc_mdep *md, int cpu)
    {
            (void) md;
            (void) cpu;
            return (0);
    }
    
    static int
    uncore_pcpu_init(struct pmc_mdep *md, int cpu)
    {
            struct pmc_cpu *pc;
            struct uncore_cpu *cc;
            struct pmc_hw *phw;
            int uncore_ri, n, npmc;
    
            KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
                ("[ucf,%d] insane cpu number %d", __LINE__, cpu));
   
           PMCDBG1(MDP,INI,1,"uncore-init cpu=%d", cpu);
   
           uncore_ri = md->pmd_classdep[PMC_MDEP_CLASS_INDEX_UCP].pcd_ri;
           npmc = md->pmd_classdep[PMC_MDEP_CLASS_INDEX_UCP].pcd_num;
           npmc += md->pmd_classdep[PMC_MDEP_CLASS_INDEX_UCF].pcd_num;
   
           cc = malloc(sizeof(struct uncore_cpu) + npmc * sizeof(struct pmc_hw),
               M_PMC, M_WAITOK | M_ZERO);
   
           uncore_pcpu[cpu] = cc;
           pc = pmc_pcpu[cpu];
   
           KASSERT(pc != NULL && cc != NULL,
               ("[uncore,%d] NULL per-cpu structures cpu=%d", __LINE__, cpu));
   
           for (n = 0, phw = cc->pc_uncorepmcs; n < npmc; n++, phw++) {
                   phw->phw_state    = PMC_PHW_FLAG_IS_ENABLED |
                       PMC_PHW_CPU_TO_STATE(cpu) |
                       PMC_PHW_INDEX_TO_STATE(n + uncore_ri);
                   phw->phw_pmc      = NULL;
                   pc->pc_hwpmcs[n + uncore_ri]  = phw;
           }
   
           return (0);
   }
   
   static int
   uncore_pcpu_fini(struct pmc_mdep *md, int cpu)
   {
           int uncore_ri, n, npmc;
           struct pmc_cpu *pc;
           struct uncore_cpu *cc;
   
           KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
               ("[uncore,%d] insane cpu number (%d)", __LINE__, cpu));
   
           PMCDBG1(MDP,INI,1,"uncore-pcpu-fini cpu=%d", cpu);
   
           if ((cc = uncore_pcpu[cpu]) == NULL)
                   return (0);
   
           uncore_pcpu[cpu] = NULL;
   
           pc = pmc_pcpu[cpu];
   
           KASSERT(pc != NULL, ("[uncore,%d] NULL per-cpu %d state", __LINE__,
                   cpu));
   
           npmc = md->pmd_classdep[PMC_MDEP_CLASS_INDEX_UCP].pcd_num;
           uncore_ri = md->pmd_classdep[PMC_MDEP_CLASS_INDEX_UCP].pcd_ri;
   
           for (n = 0; n < npmc; n++) 
                   wrmsr(SELECTSEL(uncore_cputype) + n, 0);
   
           wrmsr(UCF_CTRL, 0);
           npmc += md->pmd_classdep[PMC_MDEP_CLASS_INDEX_UCF].pcd_num;
   
           for (n = 0; n < npmc; n++)
                   pc->pc_hwpmcs[n + uncore_ri] = NULL;
   
           free(cc, M_PMC);
   
           return (0);
   }
   
   /*
    * Fixed function counters.
    */
   
   static pmc_value_t
   ucf_perfctr_value_to_reload_count(pmc_value_t v)
   {
   
           /* If the PMC has overflowed, return a reload count of zero. */
           if ((v & (1ULL << (uncore_ucf_width - 1))) == 0)
                   return (0);
           v &= (1ULL << uncore_ucf_width) - 1;
           return (1ULL << uncore_ucf_width) - v;
   }
   
   static pmc_value_t
   ucf_reload_count_to_perfctr_value(pmc_value_t rlc)
   {
           return (1ULL << uncore_ucf_width) - rlc;
   }
   
   static int
   ucf_allocate_pmc(int cpu, int ri, struct pmc *pm,
       const struct pmc_op_pmcallocate *a)
   {
           uint32_t flags;
   
           KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
               ("[uncore,%d] illegal CPU %d", __LINE__, cpu));
   
           PMCDBG2(MDP,ALL,1, "ucf-allocate ri=%d reqcaps=0x%x", ri, pm->pm_caps);
   
           if (ri < 0 || ri > uncore_ucf_npmc)
                   return (EINVAL);
   
           if (a->pm_class != PMC_CLASS_UCF)
                   return (EINVAL);
   
           flags = UCF_EN;
   
           pm->pm_md.pm_ucf.pm_ucf_ctrl = (flags << (ri * 4));
   
           PMCDBG1(MDP,ALL,2, "ucf-allocate config=0x%jx",
               (uintmax_t) pm->pm_md.pm_ucf.pm_ucf_ctrl);
   
           return (0);
   }
   
   static int
   ucf_config_pmc(int cpu, int ri, struct pmc *pm)
   {
           KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
               ("[uncore,%d] illegal CPU %d", __LINE__, cpu));
   
           KASSERT(ri >= 0 && ri < uncore_ucf_npmc,
               ("[uncore,%d] illegal row-index %d", __LINE__, ri));
   
           PMCDBG3(MDP,CFG,1, "ucf-config cpu=%d ri=%d pm=%p", cpu, ri, pm);
   
           KASSERT(uncore_pcpu[cpu] != NULL, ("[uncore,%d] null per-cpu %d", __LINE__,
               cpu));
   
           uncore_pcpu[cpu]->pc_uncorepmcs[ri + uncore_ucf_ri].phw_pmc = pm;
   
           return (0);
   }
   
   static int
   ucf_describe(int cpu, int ri, struct pmc_info *pi, struct pmc **ppmc)
   {
           int error;
           struct pmc_hw *phw;
           char ucf_name[PMC_NAME_MAX];
   
           phw = &uncore_pcpu[cpu]->pc_uncorepmcs[ri + uncore_ucf_ri];
   
           (void) snprintf(ucf_name, sizeof(ucf_name), "UCF-%d", ri);
           if ((error = copystr(ucf_name, pi->pm_name, PMC_NAME_MAX,
               NULL)) != 0)
                   return (error);
   
           pi->pm_class = PMC_CLASS_UCF;
   
           if (phw->phw_state & PMC_PHW_FLAG_IS_ENABLED) {
                   pi->pm_enabled = TRUE;
                   *ppmc          = phw->phw_pmc;
           } else {
                   pi->pm_enabled = FALSE;
                   *ppmc          = NULL;
           }
   
           return (0);
   }
   
   static int
   ucf_get_config(int cpu, int ri, struct pmc **ppm)
   {
           *ppm = uncore_pcpu[cpu]->pc_uncorepmcs[ri + uncore_ucf_ri].phw_pmc;
   
           return (0);
   }
   
   static int
   ucf_read_pmc(int cpu, int ri, pmc_value_t *v)
   {
           struct pmc *pm;
           pmc_value_t tmp;
   
           KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
               ("[uncore,%d] illegal cpu value %d", __LINE__, cpu));
           KASSERT(ri >= 0 && ri < uncore_ucf_npmc,
               ("[uncore,%d] illegal row-index %d", __LINE__, ri));
   
           pm = uncore_pcpu[cpu]->pc_uncorepmcs[ri + uncore_ucf_ri].phw_pmc;
   
           KASSERT(pm,
               ("[uncore,%d] cpu %d ri %d(%d) pmc not configured", __LINE__, cpu,
                   ri, ri + uncore_ucf_ri));
   
           tmp = rdmsr(UCF_CTR0 + ri);
   
           if (PMC_IS_SAMPLING_MODE(PMC_TO_MODE(pm)))
                   *v = ucf_perfctr_value_to_reload_count(tmp);
           else
                   *v = tmp;
   
           PMCDBG3(MDP,REA,1, "ucf-read cpu=%d ri=%d -> v=%jx", cpu, ri, *v);
   
           return (0);
   }
   
   static int
   ucf_release_pmc(int cpu, int ri, struct pmc *pmc)
   {
           PMCDBG3(MDP,REL,1, "ucf-release cpu=%d ri=%d pm=%p", cpu, ri, pmc);
   
           KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
               ("[uncore,%d] illegal CPU value %d", __LINE__, cpu));
           KASSERT(ri >= 0 && ri < uncore_ucf_npmc,
               ("[uncore,%d] illegal row-index %d", __LINE__, ri));
   
           KASSERT(uncore_pcpu[cpu]->pc_uncorepmcs[ri + uncore_ucf_ri].phw_pmc == NULL,
               ("[uncore,%d] PHW pmc non-NULL", __LINE__));
   
           return (0);
   }
   
   static int
   ucf_start_pmc(int cpu, int ri)
   {
           struct pmc *pm;
           struct uncore_cpu *ucfc;
   
           KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
               ("[uncore,%d] illegal CPU value %d", __LINE__, cpu));
           KASSERT(ri >= 0 && ri < uncore_ucf_npmc,
               ("[uncore,%d] illegal row-index %d", __LINE__, ri));
   
           PMCDBG2(MDP,STA,1,"ucf-start cpu=%d ri=%d", cpu, ri);
   
           ucfc = uncore_pcpu[cpu];
           pm = ucfc->pc_uncorepmcs[ri + uncore_ucf_ri].phw_pmc;
   
           ucfc->pc_ucfctrl |= pm->pm_md.pm_ucf.pm_ucf_ctrl;
   
           wrmsr(UCF_CTRL, ucfc->pc_ucfctrl);
   
           ucfc->pc_globalctrl |= (1ULL << (ri + SELECTOFF(uncore_cputype)));
           wrmsr(UC_GLOBAL_CTRL, ucfc->pc_globalctrl);
   
           PMCDBG4(MDP,STA,1,"ucfctrl=%x(%x) globalctrl=%jx(%jx)",
               ucfc->pc_ucfctrl, (uint32_t) rdmsr(UCF_CTRL),
               ucfc->pc_globalctrl, rdmsr(UC_GLOBAL_CTRL));
   
           return (0);
   }
   
   static int
   ucf_stop_pmc(int cpu, int ri)
   {
           uint32_t fc;
           struct uncore_cpu *ucfc;
   
           PMCDBG2(MDP,STO,1,"ucf-stop cpu=%d ri=%d", cpu, ri);
   
           ucfc = uncore_pcpu[cpu];
   
           KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
               ("[uncore,%d] illegal CPU value %d", __LINE__, cpu));
           KASSERT(ri >= 0 && ri < uncore_ucf_npmc,
               ("[uncore,%d] illegal row-index %d", __LINE__, ri));
   
           fc = (UCF_MASK << (ri * 4));
   
           ucfc->pc_ucfctrl &= ~fc;
   
           PMCDBG1(MDP,STO,1,"ucf-stop ucfctrl=%x", ucfc->pc_ucfctrl);
           wrmsr(UCF_CTRL, ucfc->pc_ucfctrl);
   
           /* Don't need to write UC_GLOBAL_CTRL, one disable is enough. */
   
           PMCDBG4(MDP,STO,1,"ucfctrl=%x(%x) globalctrl=%jx(%jx)",
               ucfc->pc_ucfctrl, (uint32_t) rdmsr(UCF_CTRL),
               ucfc->pc_globalctrl, rdmsr(UC_GLOBAL_CTRL));
   
           return (0);
   }
   
   static int
   ucf_write_pmc(int cpu, int ri, pmc_value_t v)
   {
           struct uncore_cpu *cc;
           struct pmc *pm;
   
           KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
               ("[uncore,%d] illegal cpu value %d", __LINE__, cpu));
           KASSERT(ri >= 0 && ri < uncore_ucf_npmc,
               ("[uncore,%d] illegal row-index %d", __LINE__, ri));
   
           cc = uncore_pcpu[cpu];
           pm = cc->pc_uncorepmcs[ri + uncore_ucf_ri].phw_pmc;
   
           KASSERT(pm,
               ("[uncore,%d] cpu %d ri %d pmc not configured", __LINE__, cpu, ri));
   
           if (PMC_IS_SAMPLING_MODE(PMC_TO_MODE(pm)))
                   v = ucf_reload_count_to_perfctr_value(v);
   
           wrmsr(UCF_CTRL, 0);     /* Turn off fixed counters */
           wrmsr(UCF_CTR0 + ri, v);
           wrmsr(UCF_CTRL, cc->pc_ucfctrl);
   
           PMCDBG4(MDP,WRI,1, "ucf-write cpu=%d ri=%d v=%jx ucfctrl=%jx ",
               cpu, ri, v, (uintmax_t) rdmsr(UCF_CTRL));
   
           return (0);
   }
   
   
   static void
   ucf_initialize(struct pmc_mdep *md, int maxcpu, int npmc, int pmcwidth)
   {
           struct pmc_classdep *pcd;
   
           KASSERT(md != NULL, ("[ucf,%d] md is NULL", __LINE__));
   
           PMCDBG0(MDP,INI,1, "ucf-initialize");
   
           pcd = &md->pmd_classdep[PMC_MDEP_CLASS_INDEX_UCF];
   
           pcd->pcd_caps   = UCF_PMC_CAPS;
           pcd->pcd_class  = PMC_CLASS_UCF;
           pcd->pcd_num    = npmc;
           pcd->pcd_ri     = md->pmd_npmc;
           pcd->pcd_width  = pmcwidth;
   
           pcd->pcd_allocate_pmc   = ucf_allocate_pmc;
           pcd->pcd_config_pmc     = ucf_config_pmc;
           pcd->pcd_describe       = ucf_describe;
           pcd->pcd_get_config     = ucf_get_config;
           pcd->pcd_get_msr        = NULL;
           pcd->pcd_pcpu_fini      = uncore_pcpu_noop;
           pcd->pcd_pcpu_init      = uncore_pcpu_noop;
           pcd->pcd_read_pmc       = ucf_read_pmc;
           pcd->pcd_release_pmc    = ucf_release_pmc;
           pcd->pcd_start_pmc      = ucf_start_pmc;
           pcd->pcd_stop_pmc       = ucf_stop_pmc;
           pcd->pcd_write_pmc      = ucf_write_pmc;
   
           md->pmd_npmc           += npmc;
   }
   
   /*
    * Intel programmable PMCs.
    */
   
   /*
    * Event descriptor tables.
    *
    * For each event id, we track:
    *
    * 1. The CPUs that the event is valid for.
    *
    * 2. If the event uses a fixed UMASK, the value of the umask field.
    *    If the event doesn't use a fixed UMASK, a mask of legal bits
    *    to check against.
    */
   
   struct ucp_event_descr {
           enum pmc_event  ucp_ev;
           unsigned char   ucp_evcode;
           unsigned char   ucp_umask;
           unsigned char   ucp_flags;
   };
   
   #define UCP_F_I7        (1 << 0)        /* CPU: Core i7 */
   #define UCP_F_WM        (1 << 1)        /* CPU: Westmere */
   #define UCP_F_SB        (1 << 2)        /* CPU: Sandy Bridge */
   #define UCP_F_HW        (1 << 3)        /* CPU: Haswell */
   #define UCP_F_FM        (1 << 4)        /* Fixed mask */
   
   #define UCP_F_ALLCPUS                                   \
       (UCP_F_I7 | UCP_F_WM)
   
   #define UCP_F_CMASK             0xFF000000
   
   static pmc_value_t
   ucp_perfctr_value_to_reload_count(pmc_value_t v)
   {
           v &= (1ULL << uncore_ucp_width) - 1;
           return (1ULL << uncore_ucp_width) - v;
   }
   
   static pmc_value_t
   ucp_reload_count_to_perfctr_value(pmc_value_t rlc)
   {
           return (1ULL << uncore_ucp_width) - rlc;
   }
   
   /*
    * Counter specific event information for Sandybridge and Haswell
    */
   static int
   ucp_event_sb_hw_ok_on_counter(uint8_t ev, int ri)
   {
           uint32_t mask;
   
           switch (ev) {
                   /*
                    * Events valid only on counter 0.
                    */
                   case 0x80:
                   case 0x83:
                   mask = (1 << 0);
                   break;
   
           default:
                   mask = ~0;      /* Any row index is ok. */
           }
   
           return (mask & (1 << ri));
   }
   
   static int
   ucp_allocate_pmc(int cpu, int ri, struct pmc *pm,
       const struct pmc_op_pmcallocate *a)
   {
           uint8_t ev;
           const struct pmc_md_ucp_op_pmcallocate *ucp;
   
           KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
               ("[uncore,%d] illegal CPU %d", __LINE__, cpu));
           KASSERT(ri >= 0 && ri < uncore_ucp_npmc,
               ("[uncore,%d] illegal row-index value %d", __LINE__, ri));
   
           if (a->pm_class != PMC_CLASS_UCP)
                   return (EINVAL);
   
           ucp = &a->pm_md.pm_ucp;
           ev = UCP_EVSEL(ucp->pm_ucp_config);
           switch (uncore_cputype) {
           case PMC_CPU_INTEL_HASWELL:
           case PMC_CPU_INTEL_SANDYBRIDGE:
                   if (ucp_event_sb_hw_ok_on_counter(ev, ri) == 0)
                           return (EINVAL);
                   break;
           default:
                   break;
           }
   
           pm->pm_md.pm_ucp.pm_ucp_evsel = ucp->pm_ucp_config | UCP_EN;
   
           return (0);
   }
   
   static int
   ucp_config_pmc(int cpu, int ri, struct pmc *pm)
   {
           KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
               ("[uncore,%d] illegal CPU %d", __LINE__, cpu));
   
           KASSERT(ri >= 0 && ri < uncore_ucp_npmc,
               ("[uncore,%d] illegal row-index %d", __LINE__, ri));
   
           PMCDBG3(MDP,CFG,1, "ucp-config cpu=%d ri=%d pm=%p", cpu, ri, pm);
   
           KASSERT(uncore_pcpu[cpu] != NULL, ("[uncore,%d] null per-cpu %d", __LINE__,
               cpu));
   
           uncore_pcpu[cpu]->pc_uncorepmcs[ri].phw_pmc = pm;
   
           return (0);
   }
   
   static int
   ucp_describe(int cpu, int ri, struct pmc_info *pi, struct pmc **ppmc)
   {
           int error;
           struct pmc_hw *phw;
           char ucp_name[PMC_NAME_MAX];
   
           phw = &uncore_pcpu[cpu]->pc_uncorepmcs[ri];
   
           (void) snprintf(ucp_name, sizeof(ucp_name), "UCP-%d", ri);
           if ((error = copystr(ucp_name, pi->pm_name, PMC_NAME_MAX,
               NULL)) != 0)
                   return (error);
   
           pi->pm_class = PMC_CLASS_UCP;
   
           if (phw->phw_state & PMC_PHW_FLAG_IS_ENABLED) {
                   pi->pm_enabled = TRUE;
                   *ppmc          = phw->phw_pmc;
           } else {
                   pi->pm_enabled = FALSE;
                   *ppmc          = NULL;
           }
   
           return (0);
   }
   
   static int
   ucp_get_config(int cpu, int ri, struct pmc **ppm)
   {
           *ppm = uncore_pcpu[cpu]->pc_uncorepmcs[ri].phw_pmc;
   
           return (0);
   }
   
   static int
   ucp_read_pmc(int cpu, int ri, pmc_value_t *v)
   {
           struct pmc *pm;
           pmc_value_t tmp;
   
           KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
               ("[uncore,%d] illegal cpu value %d", __LINE__, cpu));
           KASSERT(ri >= 0 && ri < uncore_ucp_npmc,
               ("[uncore,%d] illegal row-index %d", __LINE__, ri));
   
           pm = uncore_pcpu[cpu]->pc_uncorepmcs[ri].phw_pmc;
   
           KASSERT(pm,
               ("[uncore,%d] cpu %d ri %d pmc not configured", __LINE__, cpu,
                   ri));
   
           tmp = rdmsr(UCP_PMC0 + ri);
           if (PMC_IS_SAMPLING_MODE(PMC_TO_MODE(pm)))
                   *v = ucp_perfctr_value_to_reload_count(tmp);
           else
                   *v = tmp;
   
           PMCDBG4(MDP,REA,1, "ucp-read cpu=%d ri=%d msr=0x%x -> v=%jx", cpu, ri,
               ri, *v);
   
           return (0);
   }
   
   static int
   ucp_release_pmc(int cpu, int ri, struct pmc *pm)
   {
           (void) pm;
   
           PMCDBG3(MDP,REL,1, "ucp-release cpu=%d ri=%d pm=%p", cpu, ri,
               pm);
   
           KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
               ("[uncore,%d] illegal CPU value %d", __LINE__, cpu));
           KASSERT(ri >= 0 && ri < uncore_ucp_npmc,
               ("[uncore,%d] illegal row-index %d", __LINE__, ri));
   
           KASSERT(uncore_pcpu[cpu]->pc_uncorepmcs[ri].phw_pmc
               == NULL, ("[uncore,%d] PHW pmc non-NULL", __LINE__));
   
           return (0);
   }
   
   static int
   ucp_start_pmc(int cpu, int ri)
   {
           struct pmc *pm;
           uint64_t evsel;
           struct uncore_cpu *cc;
   
           KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
               ("[uncore,%d] illegal CPU value %d", __LINE__, cpu));
           KASSERT(ri >= 0 && ri < uncore_ucp_npmc,
               ("[uncore,%d] illegal row-index %d", __LINE__, ri));
   
           cc = uncore_pcpu[cpu];
           pm = cc->pc_uncorepmcs[ri].phw_pmc;
   
           KASSERT(pm,
               ("[uncore,%d] starting cpu%d,ri%d with no pmc configured",
                   __LINE__, cpu, ri));
   
           PMCDBG2(MDP,STA,1, "ucp-start cpu=%d ri=%d", cpu, ri);
   
           evsel = pm->pm_md.pm_ucp.pm_ucp_evsel;
   
           PMCDBG4(MDP,STA,2,
               "ucp-start/2 cpu=%d ri=%d evselmsr=0x%x evsel=0x%x",
               cpu, ri, SELECTSEL(uncore_cputype) + ri, evsel);
   
           /* Event specific configuration. */
           switch (pm->pm_event) {
           case PMC_EV_UCP_EVENT_0CH_04H_E:
           case PMC_EV_UCP_EVENT_0CH_08H_E:
                   wrmsr(MSR_GQ_SNOOP_MESF,0x2);
                   break;
           case PMC_EV_UCP_EVENT_0CH_04H_F:
           case PMC_EV_UCP_EVENT_0CH_08H_F:
                   wrmsr(MSR_GQ_SNOOP_MESF,0x8);
                   break;
           case PMC_EV_UCP_EVENT_0CH_04H_M:
           case PMC_EV_UCP_EVENT_0CH_08H_M:
                   wrmsr(MSR_GQ_SNOOP_MESF,0x1);
                   break;
           case PMC_EV_UCP_EVENT_0CH_04H_S:
           case PMC_EV_UCP_EVENT_0CH_08H_S:
                   wrmsr(MSR_GQ_SNOOP_MESF,0x4);
                   break;
           default:
                   break;
           }
           wrmsr(SELECTSEL(uncore_cputype) + ri, evsel);
   
           cc->pc_globalctrl |= (1ULL << ri);
           wrmsr(UC_GLOBAL_CTRL, cc->pc_globalctrl);
   
           return (0);
   }
   
   static int
   ucp_stop_pmc(int cpu, int ri)
   {
           struct pmc *pm __diagused;
           struct uncore_cpu *cc;
   
           KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
               ("[uncore,%d] illegal cpu value %d", __LINE__, cpu));
           KASSERT(ri >= 0 && ri < uncore_ucp_npmc,
               ("[uncore,%d] illegal row index %d", __LINE__, ri));
   
           cc = uncore_pcpu[cpu];
           pm = cc->pc_uncorepmcs[ri].phw_pmc;
   
           KASSERT(pm,
               ("[uncore,%d] cpu%d ri%d no configured PMC to stop", __LINE__,
                   cpu, ri));
   
           PMCDBG2(MDP,STO,1, "ucp-stop cpu=%d ri=%d", cpu, ri);
   
           /* stop hw. */
           wrmsr(SELECTSEL(uncore_cputype) + ri, 0);
   
           /* Don't need to write UC_GLOBAL_CTRL, one disable is enough. */
   
           return (0);
   }
   
   static int
   ucp_write_pmc(int cpu, int ri, pmc_value_t v)
   {
           struct pmc *pm;
           struct uncore_cpu *cc;
   
           KASSERT(cpu >= 0 && cpu < pmc_cpu_max(),
               ("[uncore,%d] illegal cpu value %d", __LINE__, cpu));
           KASSERT(ri >= 0 && ri < uncore_ucp_npmc,
               ("[uncore,%d] illegal row index %d", __LINE__, ri));
   
           cc = uncore_pcpu[cpu];
           pm = cc->pc_uncorepmcs[ri].phw_pmc;
   
           KASSERT(pm,
               ("[uncore,%d] cpu%d ri%d no configured PMC to stop", __LINE__,
                   cpu, ri));
   
           PMCDBG4(MDP,WRI,1, "ucp-write cpu=%d ri=%d msr=0x%x v=%jx", cpu, ri,
               UCP_PMC0 + ri, v);
   
           if (PMC_IS_SAMPLING_MODE(PMC_TO_MODE(pm)))
                   v = ucp_reload_count_to_perfctr_value(v);
   
           /*
            * Write the new value to the counter.  The counter will be in
            * a stopped state when the pcd_write() entry point is called.
            */
   
           wrmsr(UCP_PMC0 + ri, v);
   
           return (0);
   }
   
   
   static void
   ucp_initialize(struct pmc_mdep *md, int maxcpu, int npmc, int pmcwidth)
   {
           struct pmc_classdep *pcd;
   
           KASSERT(md != NULL, ("[ucp,%d] md is NULL", __LINE__));
   
           PMCDBG0(MDP,INI,1, "ucp-initialize");
   
           pcd = &md->pmd_classdep[PMC_MDEP_CLASS_INDEX_UCP];
   
           pcd->pcd_caps   = UCP_PMC_CAPS;
           pcd->pcd_class  = PMC_CLASS_UCP;
           pcd->pcd_num    = npmc;
           pcd->pcd_ri     = md->pmd_npmc;
           pcd->pcd_width  = pmcwidth;
   
           pcd->pcd_allocate_pmc   = ucp_allocate_pmc;
           pcd->pcd_config_pmc     = ucp_config_pmc;
           pcd->pcd_describe       = ucp_describe;
           pcd->pcd_get_config     = ucp_get_config;
           pcd->pcd_get_msr        = NULL;
           pcd->pcd_pcpu_fini      = uncore_pcpu_fini;
           pcd->pcd_pcpu_init      = uncore_pcpu_init;
           pcd->pcd_read_pmc       = ucp_read_pmc;
           pcd->pcd_release_pmc    = ucp_release_pmc;
           pcd->pcd_start_pmc      = ucp_start_pmc;
           pcd->pcd_stop_pmc       = ucp_stop_pmc;
           pcd->pcd_write_pmc      = ucp_write_pmc;
   
           md->pmd_npmc           += npmc;
   }
   
   int
   pmc_uncore_initialize(struct pmc_mdep *md, int maxcpu)
   {
           uncore_cputype = md->pmd_cputype;
           uncore_pmcmask = 0;
   
           /*
            * Initialize programmable counters.
            */
   
           uncore_ucp_npmc  = 8;
           uncore_ucp_width = 48;
   
           uncore_pmcmask |= ((1ULL << uncore_ucp_npmc) - 1);
   
           ucp_initialize(md, maxcpu, uncore_ucp_npmc, uncore_ucp_width);
   
           /*
            * Initialize fixed function counters, if present.
            */
           uncore_ucf_ri = uncore_ucp_npmc;
           uncore_ucf_npmc  = 1;
           uncore_ucf_width = 48;
   
           ucf_initialize(md, maxcpu, uncore_ucf_npmc, uncore_ucf_width);
           uncore_pmcmask |= ((1ULL << uncore_ucf_npmc) - 1) << SELECTOFF(uncore_cputype);
   
           PMCDBG2(MDP,INI,1,"uncore-init pmcmask=0x%jx ucfri=%d", uncore_pmcmask,
               uncore_ucf_ri);
   
           uncore_pcpu = malloc(sizeof(*uncore_pcpu) * maxcpu, M_PMC,
               M_ZERO | M_WAITOK);
   
           return (0);
   }
   
   void
   pmc_uncore_finalize(struct pmc_mdep *md)
   {
           PMCDBG0(MDP,INI,1, "uncore-finalize");
   
           free(uncore_pcpu, M_PMC);
           uncore_pcpu = NULL;
   }

Cache object: 6d9c54eb3be8b74f67d158332a46d48c