/* SPDX-License-Identifier: GPL-2.0-only */ #include #include #include #include #include #include #include /* Default values for domain configuration. */ static const struct vr_config default_configs[NUM_VR_DOMAINS] = { [VR_SYSTEM_AGENT] = { .vr_config_enable = 1, .psi1threshold = VR_CFG_AMP(20), .psi2threshold = VR_CFG_AMP(4), .psi3threshold = VR_CFG_AMP(1), .psi3enable = 1, .psi4enable = 1, .imon_slope = 0, .imon_offset = 0, .icc_max = 0, .voltage_limit = 1520, }, [VR_IA_CORE] = { .vr_config_enable = 1, .psi1threshold = VR_CFG_AMP(20), .psi2threshold = VR_CFG_AMP(5), .psi3threshold = VR_CFG_AMP(1), .psi3enable = 1, .psi4enable = 1, .imon_slope = 0, .imon_offset = 0, .icc_max = 0, .voltage_limit = 1520, }, [VR_GT_UNSLICED] = { .vr_config_enable = 1, .psi1threshold = VR_CFG_AMP(20), .psi2threshold = VR_CFG_AMP(5), .psi3threshold = VR_CFG_AMP(1), .psi3enable = 1, .psi4enable = 1, .imon_slope = 0, .imon_offset = 0, .icc_max = 0, .voltage_limit = 1520, }, [VR_GT_SLICED] = { .vr_config_enable = 1, .psi1threshold = VR_CFG_AMP(20), .psi2threshold = VR_CFG_AMP(5), .psi3threshold = VR_CFG_AMP(1), .psi3enable = 1, .psi4enable = 1, .imon_slope = 0, .imon_offset = 0, .icc_max = 0, .voltage_limit = 1520, }, }; static uint16_t get_sku_icc_max(int domain) { const uint16_t tdp = cpu_get_power_max() / 1000; static uint16_t mch_id = 0, igd_id = 0; if (!mch_id) { struct device *dev = pcidev_path_on_root(SA_DEVFN_ROOT); mch_id = dev ? pci_read_config16(dev, PCI_DEVICE_ID) : 0xffff; } if (!igd_id) { struct device *dev = pcidev_path_on_root(SA_DEVFN_IGD); igd_id = dev ? pci_read_config16(dev, PCI_DEVICE_ID) : 0xffff; } /* * Iccmax table from Doc #559100 Section 7.2 DC Specifications, the * Iccmax is the same among KBL-Y but KBL-U/R. * Addendum for AML-Y #594883, IccMax for IA core is 28A. * KBL-S #335195, KBL-H #335190, SKL-S #332687, SKL-H #332986, * SKL-U/Y #332990 * * Platform Segment SA IA GT (GT/GTx) * --------------------------------------------------------------------- * KBL/SKL-S (95W) quad 11.1 100 45 * SKL-S (80W) quad 11.1 82 45 * KBL/SKL-S (65W) quad 11.1 79 45 * SKL-S (45W) quad 11.1 70 0 * KBL/SKL-S (35W) quad 11.1 66 35 * SKL-S (25W) quad 11.1 55 35 * * KBL/SKL-S (54W) dual 11.1 58 48 * KBL/SKL-S (51W) dual 11.1 45 48 * KBL/SKL-S (35W) dual 11.1 40 48 * * SKL-H + OPC (65W) GT4 quad 8 74 105/24 * SKL-H + OPC (45W) GT4 quad 8 74 94/20 * SKL-H + OPC (35W) GT4 quad 8 66 94/20 * * SKL-H (35W) GT2 dual 11.1 60 55 * * KBL/SKL-H (45W) GT2 quad 11.1 68 55 * KBL-H (18W) GT2 quad 6.6 60 55 * * SKL-U + OPC (28W) GT3 dual 5.1 32 57/19 * SKL-U + OPC (15W) GT3 dual 5.1 29 57/19 * SKL-U (15W) GT2 dual 4.5 29 31 * * KBL-U + OPC (28W) GT3 dual 5.1 32 57/19 * KBL-U + OPC (15W) GT3 dual 5.1 32 57/19 * KBL-U (15W) GT1/2 dual 4.5 32 31 * KBL-U [*] (15W) GT1 quad 4.5 29 31 * * KBL-U/R (15W) GT2 quad 6 64 31 * * SKL/KBL-Y (6W) 4.1 24 24 * SKL/KBL-Y (4.5W) 4.1 24 24 * * [*] Pentium/Celeron CPUs with HD Graphics 610 */ switch (mch_id) { case PCI_DEVICE_ID_INTEL_SKL_ID_S_2: /* fallthrough */ case PCI_DEVICE_ID_INTEL_KBL_ID_S: { uint16_t icc_max[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_ICC(11.1, 40, 48, 48); if (tdp >= 54) icc_max[VR_IA_CORE] = VR_CFG_AMP(58); else if (tdp >= 51) icc_max[VR_IA_CORE] = VR_CFG_AMP(45); return icc_max[domain]; } case PCI_DEVICE_ID_INTEL_SKL_ID_S_4: /* fallthrough */ case PCI_DEVICE_ID_INTEL_KBL_ID_DT_2: /* fallthrough */ case PCI_DEVICE_ID_INTEL_KBL_ID_DT: { uint16_t icc_max[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_ICC(11.1, 55, 45, 45); if (tdp >= 91) icc_max[VR_IA_CORE] = VR_CFG_AMP(100); else if (tdp >= 80) icc_max[VR_IA_CORE] = VR_CFG_AMP(82); else if (tdp >= 65) icc_max[VR_IA_CORE] = VR_CFG_AMP(79); else if (tdp >= 45) { icc_max[VR_IA_CORE] = VR_CFG_AMP(70); icc_max[VR_GT_SLICED] = 0; icc_max[VR_GT_UNSLICED] = 0; } else if (tdp >= 25) { if (tdp >= 35) icc_max[VR_IA_CORE] = VR_CFG_AMP(66); icc_max[VR_GT_SLICED] = VR_CFG_AMP(35); icc_max[VR_GT_UNSLICED] = VR_CFG_AMP(35); } return icc_max[domain]; } case PCI_DEVICE_ID_INTEL_SKL_ID_H_4: { uint16_t icc_max[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_ICC(11.1, 60, 94, 20); if (tdp >= 45) { icc_max[VR_IA_CORE] = VR_CFG_AMP(74); if (tdp >= 65) { icc_max[VR_GT_SLICED] = VR_CFG_AMP(105); icc_max[VR_GT_UNSLICED] = VR_CFG_AMP(24); } } return icc_max[domain]; } case PCI_DEVICE_ID_INTEL_SKL_ID_H_2: /* fallthrough */ case PCI_DEVICE_ID_INTEL_SKL_ID_H_EM: /* fallthrough */ case PCI_DEVICE_ID_INTEL_KBL_ID_H: { uint16_t icc_max[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_ICC(6.6, 60, 55, 55); if (tdp >= 35) { if (tdp >= 45) icc_max[VR_IA_CORE] = VR_CFG_AMP(68); icc_max[VR_SYSTEM_AGENT] = VR_CFG_AMP(11.1); } return icc_max[domain]; } case PCI_DEVICE_ID_INTEL_SKL_ID_U: { uint16_t icc_max[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_ICC(5.1, 29, 57, 19); if (tdp >= 28) icc_max[VR_IA_CORE] = VR_CFG_AMP(32); else if (igd_id != PCI_DEVICE_ID_INTEL_SKL_GT3E_SULTM_1) { const uint16_t icc_max_gt2[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_ICC(4.5, 29, 31, 31); return icc_max_gt2[domain]; } return icc_max[domain]; } case PCI_DEVICE_ID_INTEL_KBL_U_R: { const uint16_t icc_max[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_ICC(6, 64, 31, 31); return icc_max[domain]; } case PCI_DEVICE_ID_INTEL_SKL_ID_Y: /* fallthrough */ case PCI_DEVICE_ID_INTEL_KBL_ID_Y: { uint16_t icc_max[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_ICC(4.1, 24, 24, 24); if (igd_id == PCI_DEVICE_ID_INTEL_AML_GT2_ULX) icc_max[VR_IA_CORE] = VR_CFG_AMP(28); return icc_max[domain]; } case PCI_DEVICE_ID_INTEL_KBL_ID_U: { uint16_t icc_max[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_ICC(4.5, 32, 31, 31); if (igd_id == PCI_DEVICE_ID_INTEL_KBL_GT1_SULTM) icc_max[VR_IA_CORE] = VR_CFG_AMP(29); else if ((igd_id == PCI_DEVICE_ID_INTEL_KBL_GT3E_SULTM_1) || (igd_id == PCI_DEVICE_ID_INTEL_KBL_GT3E_SULTM_2)) { const uint16_t icc_max_gt3[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_ICC(5.1, 32, 57, 19); return icc_max_gt3[domain]; } return icc_max[domain]; } default: printk(BIOS_ERR, "Unknown MCH (0x%x) in %s\n", mch_id, __func__); } return 0; } static uint16_t get_sku_ac_dc_loadline(const int domain) { static uint16_t mch_id = 0, igd_id = 0; if (!mch_id) { struct device *dev = pcidev_path_on_root(SA_DEVFN_ROOT); mch_id = dev ? pci_read_config16(dev, PCI_DEVICE_ID) : 0xffff; } if (!igd_id) { struct device *dev = pcidev_path_on_root(SA_DEVFN_IGD); igd_id = dev ? pci_read_config16(dev, PCI_DEVICE_ID) : 0xffff; } switch (mch_id) { case PCI_DEVICE_ID_INTEL_SKL_ID_S_2: /* fallthrough */ case PCI_DEVICE_ID_INTEL_SKL_ID_S_4: /* fallthrough */ case PCI_DEVICE_ID_INTEL_KBL_ID_S: /* fallthrough */ case PCI_DEVICE_ID_INTEL_KBL_ID_DT: /* fallthrough */ case PCI_DEVICE_ID_INTEL_KBL_ID_DT_2: { /* SA Loadline is not specified */ const uint16_t loadline[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_LOADLINE(0, 2.1, 3.1, 3.1); return loadline[domain]; } case PCI_DEVICE_ID_INTEL_SKL_ID_H_2: /* fallthrough */ case PCI_DEVICE_ID_INTEL_SKL_ID_H_EM: /* fallthrough */ case PCI_DEVICE_ID_INTEL_SKL_ID_H_4: /* fallthrough */ case PCI_DEVICE_ID_INTEL_KBL_ID_H: { const uint16_t loadline[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_LOADLINE(10, 1.8, 2.65, 2.65); if (igd_id == PCI_DEVICE_ID_INTEL_SKL_GT4_SHALM) { const uint16_t loadline_gt4[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_LOADLINE(6, 1.6, 1.4, 6); return loadline_gt4[domain]; } return loadline[domain]; } case PCI_DEVICE_ID_INTEL_SKL_ID_Y: /* fallthrough */ case PCI_DEVICE_ID_INTEL_KBL_ID_Y: { uint16_t loadline[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_LOADLINE(18, 5.9, 5.7, 5.7); if (igd_id == PCI_DEVICE_ID_INTEL_AML_GT2_ULX) loadline[VR_IA_CORE] = VR_CFG_MOHMS(4); return loadline[domain]; } case PCI_DEVICE_ID_INTEL_SKL_ID_U: /* fallthrough */ case PCI_DEVICE_ID_INTEL_KBL_U_R: /* fallthrough */ case PCI_DEVICE_ID_INTEL_KBL_ID_U: { uint16_t loadline[NUM_VR_DOMAINS] = VR_CFG_ALL_DOMAINS_LOADLINE(10.3, 2.4, 3.1, 3.1); if ((igd_id == PCI_DEVICE_ID_INTEL_SKL_GT3E_SULTM_1) || (igd_id == PCI_DEVICE_ID_INTEL_SKL_GT3E_SULTM_2) || (igd_id == PCI_DEVICE_ID_INTEL_KBL_GT3E_SULTM_1) || (igd_id == PCI_DEVICE_ID_INTEL_KBL_GT3E_SULTM_2)) { loadline[VR_GT_UNSLICED] = VR_CFG_MOHMS(2); loadline[VR_GT_SLICED] = VR_CFG_MOHMS(6); } return loadline[domain]; } default: printk(BIOS_ERR, "Unknown MCH (0x%x) in %s\n", mch_id, __func__); } return 0; } void fill_vr_domain_config(void *params, int domain, const struct vr_config *chip_cfg) { FSP_SIL_UPD *vr_params = (FSP_SIL_UPD *)params; const struct vr_config *cfg; if (domain < 0 || domain >= NUM_VR_DOMAINS) return; /* Use device tree override if requested. */ if (chip_cfg->vr_config_enable) cfg = chip_cfg; else cfg = &default_configs[domain]; vr_params->VrConfigEnable[domain] = cfg->vr_config_enable; vr_params->Psi1Threshold[domain] = cfg->psi1threshold; vr_params->Psi2Threshold[domain] = cfg->psi2threshold; vr_params->Psi3Threshold[domain] = cfg->psi3threshold; vr_params->Psi3Enable[domain] = cfg->psi3enable; vr_params->Psi4Enable[domain] = cfg->psi4enable; vr_params->ImonSlope[domain] = cfg->imon_slope; vr_params->ImonOffset[domain] = cfg->imon_offset; /* If board provided non-zero value, use it. */ if (cfg->icc_max) vr_params->IccMax[domain] = cfg->icc_max; else vr_params->IccMax[domain] = get_sku_icc_max(domain); vr_params->VrVoltageLimit[domain] = cfg->voltage_limit; if (cfg->ac_loadline) vr_params->AcLoadline[domain] = cfg->ac_loadline; else vr_params->AcLoadline[domain] = get_sku_ac_dc_loadline(domain); if (cfg->dc_loadline) vr_params->DcLoadline[domain] = cfg->dc_loadline; else vr_params->DcLoadline[domain] = get_sku_ac_dc_loadline(domain); }