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tools/power turbostat: Baytrail c-state support
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The Baytrail SOC, with its Silvermont core, has some unique properties:

1. a hardware CC1 residency counter
2. a module-c6 residency counter
3. a package-c6 counter at traditional package-c7 counter address.

The SOC does not support c3, pc3, c7 or pc7 counters.

Signed-off-by: Len Brown <len.brown@intel.com>
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lenb committed Mar 1, 2017
1 parent 419c9e9 commit 0539ba1
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Showing 2 changed files with 39 additions and 9 deletions.
2 changes: 2 additions & 0 deletions arch/x86/include/asm/msr-index.h
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Original file line number Diff line number Diff line change
Expand Up @@ -147,6 +147,7 @@
/* C-state Residency Counters */
#define MSR_PKG_C3_RESIDENCY 0x000003f8
#define MSR_PKG_C6_RESIDENCY 0x000003f9
#define MSR_ATOM_PKG_C6_RESIDENCY 0x000003fa
#define MSR_PKG_C7_RESIDENCY 0x000003fa
#define MSR_CORE_C3_RESIDENCY 0x000003fc
#define MSR_CORE_C6_RESIDENCY 0x000003fd
Expand Down Expand Up @@ -203,6 +204,7 @@
#define MSR_PKG_BOTH_CORE_GFXE_C0_RES 0x0000065B

#define MSR_CORE_C1_RES 0x00000660
#define MSR_MODULE_C6_RES_MS 0x00000664

#define MSR_CC6_DEMOTION_POLICY_CONFIG 0x00000668
#define MSR_MC6_DEMOTION_POLICY_CONFIG 0x00000669
Expand Down
46 changes: 37 additions & 9 deletions tools/power/x86/turbostat/turbostat.c
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Original file line number Diff line number Diff line change
Expand Up @@ -167,6 +167,7 @@ struct core_data {
unsigned long long c3;
unsigned long long c6;
unsigned long long c7;
unsigned long long mc6_us; /* duplicate as per-core for now, even though per module */
unsigned int core_temp_c;
unsigned int core_id;
unsigned long long counter[MAX_ADDED_COUNTERS];
Expand Down Expand Up @@ -375,6 +376,7 @@ struct msr_counter bic[] = {
{ 0x0, "RAM_J" },
{ 0x0, "Core" },
{ 0x0, "CPU" },
{ 0x0, "Mod%c6" },
};

#define MAX_BIC (sizeof(bic) / sizeof(struct msr_counter))
Expand Down Expand Up @@ -412,6 +414,7 @@ struct msr_counter bic[] = {
#define BIC_RAM_J (1ULL << 31)
#define BIC_Core (1ULL << 32)
#define BIC_CPU (1ULL << 33)
#define BIC_Mod_c6 (1ULL << 34)

unsigned long long bic_enabled = 0xFFFFFFFFFFFFFFFFULL;
unsigned long long bic_present;
Expand Down Expand Up @@ -504,6 +507,8 @@ void print_header(void)
if (DO_BIC(BIC_CPU_c7))
outp += sprintf(outp, "\tCPU%%c7");

if (DO_BIC(BIC_Mod_c6))
outp += sprintf(outp, "\tMod%%c6");

if (DO_BIC(BIC_CoreTmp))
outp += sprintf(outp, "\tCoreTmp");
Expand Down Expand Up @@ -629,6 +634,7 @@ int dump_counters(struct thread_data *t, struct core_data *c,
outp += sprintf(outp, "cADDED [%d] msr0x%x: %08llX\n",
i, mp->msr_num, c->counter[i]);
}
outp += sprintf(outp, "mc6_us: %016llX\n", c->mc6_us);
}

if (p) {
Expand Down Expand Up @@ -774,6 +780,10 @@ int format_counters(struct thread_data *t, struct core_data *c,
if (DO_BIC(BIC_CPU_c7))
outp += sprintf(outp, "\t%.2f", 100.0 * c->c7/t->tsc);

/* Mod%c6 */
if (DO_BIC(BIC_Mod_c6))
outp += sprintf(outp, "\t%.2f", 100.0 * c->mc6_us / t->tsc);

if (DO_BIC(BIC_CoreTmp))
outp += sprintf(outp, "\t%d", c->core_temp_c);

Expand Down Expand Up @@ -988,6 +998,7 @@ delta_core(struct core_data *new, struct core_data *old)
old->c6 = new->c6 - old->c6;
old->c7 = new->c7 - old->c7;
old->core_temp_c = new->core_temp_c;
old->mc6_us = new->mc6_us - old->mc6_us;

for (i = 0, mp = sys.cp; mp; i++, mp = mp->next) {
if (mp->format == FORMAT_RAW)
Expand Down Expand Up @@ -1109,6 +1120,7 @@ void clear_counters(struct thread_data *t, struct core_data *c, struct pkg_data
c->c3 = 0;
c->c6 = 0;
c->c7 = 0;
c->mc6_us = 0;
c->core_temp_c = 0;

p->pkg_wtd_core_c0 = 0;
Expand Down Expand Up @@ -1173,6 +1185,7 @@ int sum_counters(struct thread_data *t, struct core_data *c,
average.cores.c3 += c->c3;
average.cores.c6 += c->c6;
average.cores.c7 += c->c7;
average.cores.mc6_us += c->mc6_us;

average.cores.core_temp_c = MAX(average.cores.core_temp_c, c->core_temp_c);

Expand Down Expand Up @@ -1246,6 +1259,7 @@ void compute_average(struct thread_data *t, struct core_data *c,
average.cores.c3 /= topo.num_cores;
average.cores.c6 /= topo.num_cores;
average.cores.c7 /= topo.num_cores;
average.cores.mc6_us /= topo.num_cores;

if (do_skl_residency) {
average.packages.pkg_wtd_core_c0 /= topo.num_packages;
Expand Down Expand Up @@ -1376,8 +1390,7 @@ int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
return -5;
t->smi_count = msr & 0xFFFFFFFF;
}

if (use_c1_residency_msr) {
if (DO_BIC(BIC_CPU_c1) && use_c1_residency_msr) {
if (get_msr(cpu, MSR_CORE_C1_RES, &t->c1))
return -6;
}
Expand Down Expand Up @@ -1409,6 +1422,10 @@ int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
if (get_msr(cpu, MSR_CORE_C7_RESIDENCY, &c->c7))
return -8;

if (DO_BIC(BIC_Mod_c6))
if (get_msr(cpu, MSR_MODULE_C6_RES_MS, &c->mc6_us))
return -8;

if (DO_BIC(BIC_CoreTmp)) {
if (get_msr(cpu, MSR_IA32_THERM_STATUS, &msr))
return -9;
Expand Down Expand Up @@ -1437,9 +1454,16 @@ int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
if (do_pc3)
if (get_msr(cpu, MSR_PKG_C3_RESIDENCY, &p->pc3))
return -9;
if (do_pc6)
if (get_msr(cpu, MSR_PKG_C6_RESIDENCY, &p->pc6))
return -10;
if (do_pc6) {
if (do_slm_cstates) {
if (get_msr(cpu, MSR_ATOM_PKG_C6_RESIDENCY, &p->pc6))
return -10;
} else {
if (get_msr(cpu, MSR_PKG_C6_RESIDENCY, &p->pc6))
return -10;
}
}

if (do_pc2)
if (get_msr(cpu, MSR_PKG_C2_RESIDENCY, &p->pc2))
return -11;
Expand Down Expand Up @@ -1533,7 +1557,7 @@ char *pkg_cstate_limit_strings[] = { "reserved", "unknown", "pc0", "pc1", "pc2",
int nhm_pkg_cstate_limits[16] = {PCL__0, PCL__1, PCL__3, PCL__6, PCL__7, PCLRSV, PCLRSV, PCLUNL, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV};
int snb_pkg_cstate_limits[16] = {PCL__0, PCL__2, PCL_6N, PCL_6R, PCL__7, PCL_7S, PCLRSV, PCLUNL, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV};
int hsw_pkg_cstate_limits[16] = {PCL__0, PCL__2, PCL__3, PCL__6, PCL__7, PCL_7S, PCL__8, PCL__9, PCLUNL, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV};
int slv_pkg_cstate_limits[16] = {PCL__0, PCL__1, PCLRSV, PCLRSV, PCL__4, PCLRSV, PCL__6, PCL__7, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV};
int slv_pkg_cstate_limits[16] = {PCL__0, PCL__1, PCLRSV, PCLRSV, PCL__4, PCLRSV, PCL__6, PCL__7, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCL__6, PCL__7};
int amt_pkg_cstate_limits[16] = {PCLUNL, PCL__1, PCL__2, PCLRSV, PCLRSV, PCLRSV, PCL__6, PCL__7, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV};
int phi_pkg_cstate_limits[16] = {PCL__0, PCL__2, PCL_6N, PCL_6R, PCLRSV, PCLRSV, PCLRSV, PCLUNL, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV};
int bxt_pkg_cstate_limits[16] = {PCL__0, PCL__2, PCLUNL, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV};
Expand Down Expand Up @@ -3336,8 +3360,6 @@ int has_skl_msrs(unsigned int family, unsigned int model)
return 0;
}



int is_slm(unsigned int family, unsigned int model)
{
if (!genuine_intel)
Expand Down Expand Up @@ -3731,6 +3753,12 @@ void process_cpuid()
do_pc3 = (pkg_cstate_limit >= PCL__3);
do_pc6 = (pkg_cstate_limit >= PCL__6);
do_pc7 = do_snb_cstates && (pkg_cstate_limit >= PCL__7);
if (has_slv_msrs(family, model)) {
do_pc2 = do_pc3 = do_pc7 = 0;
do_pc6 = 1;
BIC_PRESENT(BIC_Mod_c6);
use_c1_residency_msr = 1;
}
do_c8_c9_c10 = has_hsw_msrs(family, model);
do_irtl_hsw = has_hsw_msrs(family, model);
do_skl_residency = has_skl_msrs(family, model);
Expand Down Expand Up @@ -4112,7 +4140,7 @@ int get_and_dump_counters(void)
}

void print_version() {
fprintf(outf, "turbostat version 4.17 1 Jan 2017"
fprintf(outf, "turbostat version 4.17 10 Jan 2017"
" - Len Brown <lenb@kernel.org>\n");
}

Expand Down

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