diff options
Diffstat (limited to 'kernel/drivers/powercap')
| -rw-r--r-- | kernel/drivers/powercap/intel_rapl.c | 67 |
1 files changed, 54 insertions, 13 deletions
diff --git a/kernel/drivers/powercap/intel_rapl.c b/kernel/drivers/powercap/intel_rapl.c index fd2432316..48747c28a 100644 --- a/kernel/drivers/powercap/intel_rapl.c +++ b/kernel/drivers/powercap/intel_rapl.c @@ -187,6 +187,7 @@ struct rapl_package { }; struct rapl_defaults { + u8 floor_freq_reg_addr; int (*check_unit)(struct rapl_package *rp, int cpu); void (*set_floor_freq)(struct rapl_domain *rd, bool mode); u64 (*compute_time_window)(struct rapl_package *rp, u64 val, @@ -196,7 +197,8 @@ struct rapl_defaults { static struct rapl_defaults *rapl_defaults; /* Sideband MBI registers */ -#define IOSF_CPU_POWER_BUDGET_CTL (0x2) +#define IOSF_CPU_POWER_BUDGET_CTL_BYT (0x2) +#define IOSF_CPU_POWER_BUDGET_CTL_TNG (0xdf) #define PACKAGE_PLN_INT_SAVED BIT(0) #define MAX_PRIM_NAME (32) @@ -358,7 +360,8 @@ static int set_domain_enable(struct powercap_zone *power_zone, bool mode) get_online_cpus(); rapl_write_data_raw(rd, PL1_ENABLE, mode); - rapl_defaults->set_floor_freq(rd, mode); + if (rapl_defaults->set_floor_freq) + rapl_defaults->set_floor_freq(rd, mode); put_online_cpus(); return 0; @@ -979,16 +982,22 @@ static void set_floor_freq_atom(struct rapl_domain *rd, bool enable) static u32 power_ctrl_orig_val; u32 mdata; + if (!rapl_defaults->floor_freq_reg_addr) { + pr_err("Invalid floor frequency config register\n"); + return; + } + if (!power_ctrl_orig_val) iosf_mbi_read(BT_MBI_UNIT_PMC, BT_MBI_PMC_READ, - IOSF_CPU_POWER_BUDGET_CTL, &power_ctrl_orig_val); + rapl_defaults->floor_freq_reg_addr, + &power_ctrl_orig_val); mdata = power_ctrl_orig_val; if (enable) { mdata &= ~(0x7f << 8); mdata |= 1 << 8; } iosf_mbi_write(BT_MBI_UNIT_PMC, BT_MBI_PMC_WRITE, - IOSF_CPU_POWER_BUDGET_CTL, mdata); + rapl_defaults->floor_freq_reg_addr, mdata); } static u64 rapl_compute_time_window_core(struct rapl_package *rp, u64 value, @@ -1029,6 +1038,7 @@ static u64 rapl_compute_time_window_atom(struct rapl_package *rp, u64 value, } static const struct rapl_defaults rapl_defaults_core = { + .floor_freq_reg_addr = 0, .check_unit = rapl_check_unit_core, .set_floor_freq = set_floor_freq_default, .compute_time_window = rapl_compute_time_window_core, @@ -1041,12 +1051,34 @@ static const struct rapl_defaults rapl_defaults_hsw_server = { .dram_domain_energy_unit = 15300, }; -static const struct rapl_defaults rapl_defaults_atom = { +static const struct rapl_defaults rapl_defaults_byt = { + .floor_freq_reg_addr = IOSF_CPU_POWER_BUDGET_CTL_BYT, .check_unit = rapl_check_unit_atom, .set_floor_freq = set_floor_freq_atom, .compute_time_window = rapl_compute_time_window_atom, }; +static const struct rapl_defaults rapl_defaults_tng = { + .floor_freq_reg_addr = IOSF_CPU_POWER_BUDGET_CTL_TNG, + .check_unit = rapl_check_unit_atom, + .set_floor_freq = set_floor_freq_atom, + .compute_time_window = rapl_compute_time_window_atom, +}; + +static const struct rapl_defaults rapl_defaults_ann = { + .floor_freq_reg_addr = 0, + .check_unit = rapl_check_unit_atom, + .set_floor_freq = NULL, + .compute_time_window = rapl_compute_time_window_atom, +}; + +static const struct rapl_defaults rapl_defaults_cht = { + .floor_freq_reg_addr = 0, + .check_unit = rapl_check_unit_atom, + .set_floor_freq = NULL, + .compute_time_window = rapl_compute_time_window_atom, +}; + #define RAPL_CPU(_model, _ops) { \ .vendor = X86_VENDOR_INTEL, \ .family = 6, \ @@ -1057,18 +1089,22 @@ static const struct rapl_defaults rapl_defaults_atom = { static const struct x86_cpu_id rapl_ids[] __initconst = { RAPL_CPU(0x2a, rapl_defaults_core),/* Sandy Bridge */ RAPL_CPU(0x2d, rapl_defaults_core),/* Sandy Bridge EP */ - RAPL_CPU(0x37, rapl_defaults_atom),/* Valleyview */ + RAPL_CPU(0x37, rapl_defaults_byt),/* Valleyview */ RAPL_CPU(0x3a, rapl_defaults_core),/* Ivy Bridge */ RAPL_CPU(0x3c, rapl_defaults_core),/* Haswell */ RAPL_CPU(0x3d, rapl_defaults_core),/* Broadwell */ RAPL_CPU(0x3f, rapl_defaults_hsw_server),/* Haswell servers */ RAPL_CPU(0x4f, rapl_defaults_hsw_server),/* Broadwell servers */ RAPL_CPU(0x45, rapl_defaults_core),/* Haswell ULT */ + RAPL_CPU(0x47, rapl_defaults_core),/* Broadwell-H */ RAPL_CPU(0x4E, rapl_defaults_core),/* Skylake */ - RAPL_CPU(0x4C, rapl_defaults_atom),/* Braswell */ - RAPL_CPU(0x4A, rapl_defaults_atom),/* Tangier */ + RAPL_CPU(0x4C, rapl_defaults_cht),/* Braswell/Cherryview */ + RAPL_CPU(0x4A, rapl_defaults_tng),/* Tangier */ RAPL_CPU(0x56, rapl_defaults_core),/* Future Xeon */ - RAPL_CPU(0x5A, rapl_defaults_atom),/* Annidale */ + RAPL_CPU(0x5A, rapl_defaults_ann),/* Annidale */ + RAPL_CPU(0X5C, rapl_defaults_core),/* Broxton */ + RAPL_CPU(0x5E, rapl_defaults_core),/* Skylake-H/S */ + RAPL_CPU(0x57, rapl_defaults_hsw_server),/* Knights Landing */ {} }; MODULE_DEVICE_TABLE(x86cpu, rapl_ids); @@ -1112,9 +1148,11 @@ static int rapl_unregister_powercap(void) pr_debug("remove package, undo power limit on %d: %s\n", rp->id, rd->name); rapl_write_data_raw(rd, PL1_ENABLE, 0); - rapl_write_data_raw(rd, PL2_ENABLE, 0); rapl_write_data_raw(rd, PL1_CLAMP, 0); - rapl_write_data_raw(rd, PL2_CLAMP, 0); + if (find_nr_power_limit(rd) > 1) { + rapl_write_data_raw(rd, PL2_ENABLE, 0); + rapl_write_data_raw(rd, PL2_CLAMP, 0); + } if (rd->id == RAPL_DOMAIN_PACKAGE) { rd_package = rd; continue; @@ -1303,10 +1341,13 @@ static int rapl_detect_domains(struct rapl_package *rp, int cpu) for (rd = rp->domains; rd < rp->domains + rp->nr_domains; rd++) { /* check if the domain is locked by BIOS */ - if (rapl_read_data_raw(rd, FW_LOCK, false, &locked)) { + ret = rapl_read_data_raw(rd, FW_LOCK, false, &locked); + if (ret) + return ret; + if (locked) { pr_info("RAPL package %d domain %s locked by BIOS\n", rp->id, rd->name); - rd->state |= DOMAIN_STATE_BIOS_LOCKED; + rd->state |= DOMAIN_STATE_BIOS_LOCKED; } } |