/* SPDX-License-Identifier: GPL-2.0-only */ #include <acpi/acpi.h> #include <acpi/acpi_gnvs.h> #include <acpi/acpigen.h> #include <arch/ioapic.h> #include <arch/smp/mpspec.h> #include <device/mmio.h> #include <console/console.h> #include <cpu/intel/turbo.h> #include <cpu/x86/msr.h> #include <cpu/x86/smm.h> #include <device/pci.h> #include <drivers/intel/gma/opregion.h> #include <soc/acpi.h> #include <soc/device_nvs.h> #include <soc/gfx.h> #include <soc/iomap.h> #include <soc/irq.h> #include <soc/msr.h> #include <soc/nvs.h> #include <soc/pattrs.h> #include <soc/pci_devs.h> #include <soc/pm.h> #include <string.h> #include <types.h> #include <wrdd.h> #include "chip.h" #define MWAIT_RES(state, sub_state) \ { \ .addrl = (((state) << 4) | (sub_state)), \ .space_id = ACPI_ADDRESS_SPACE_FIXED, \ .bit_width = ACPI_FFIXEDHW_VENDOR_INTEL, \ .bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT, \ .access_size = ACPI_FFIXEDHW_FLAG_HW_COORD, \ } /* C-state map without S0ix */ static const acpi_cstate_t cstate_map[] = { { /* C1 */ .ctype = 1, /* ACPI C1 */ .latency = 1, .power = 1000, .resource = MWAIT_RES(0, 0), }, { /* C6NS with no L2 shrink */ /* NOTE: this substate is above CPUID limit */ .ctype = 2, /* ACPI C2 */ .latency = 500, .power = 10, .resource = MWAIT_RES(5, 1), }, { /* C6FS with full L2 shrink */ .ctype = 3, /* ACPI C3 */ .latency = 1500, /* 1.5ms worst case */ .power = 1, .resource = MWAIT_RES(5, 2), } }; size_t size_of_dnvs(void) { return sizeof(struct device_nvs); } void soc_fill_gnvs(struct global_nvs *gnvs) { const struct soc_intel_braswell_config *config = config_of_soc(); gnvs->dpte = config->dptf_enable; /* Fill in the Wi-Fi Region ID */ if (CONFIG(HAVE_REGULATORY_DOMAIN)) gnvs->cid1 = wifi_regulatory_domain(); else gnvs->cid1 = WRDD_DEFAULT_REGULATORY_DOMAIN; } static u8 soc_madt_sci_irq_polarity(u8 sci_irq) { if (sci_irq >= 20) return MP_IRQ_POLARITY_LOW; else return MP_IRQ_POLARITY_HIGH; } #define ACPI_SCI_IRQ 9 void ioapic_get_sci_pin(u8 *gsi, u8 *irq, u8 *flags) { u32 *actl = (u32 *)(ILB_BASE_ADDRESS + ACTL); int sci_irq = ACPI_SCI_IRQ; int scis; /* Determine how SCI is routed. */ scis = read32(actl) & SCIS_MASK; switch (scis) { case SCIS_IRQ9: case SCIS_IRQ10: case SCIS_IRQ11: sci_irq = scis - SCIS_IRQ9 + 9; break; case SCIS_IRQ20: case SCIS_IRQ21: case SCIS_IRQ22: case SCIS_IRQ23: sci_irq = scis - SCIS_IRQ20 + 20; break; default: printk(BIOS_DEBUG, "Invalid SCI route! Defaulting to IRQ%d.\n", sci_irq); break; } *gsi = sci_irq; *irq = (sci_irq < 16) ? sci_irq : ACPI_SCI_IRQ; *flags = MP_IRQ_TRIGGER_LEVEL | soc_madt_sci_irq_polarity(sci_irq); printk(BIOS_DEBUG, "SCI is IRQ %d, GSI %d\n", *irq, *gsi); } static acpi_tstate_t soc_tss_table[] = { { 100, 1000, 0, 0x00, 0 }, { 88, 875, 0, 0x1e, 0 }, { 75, 750, 0, 0x1c, 0 }, { 63, 625, 0, 0x1a, 0 }, { 50, 500, 0, 0x18, 0 }, { 38, 375, 0, 0x16, 0 }, { 25, 250, 0, 0x14, 0 }, { 13, 125, 0, 0x12, 0 }, }; static void generate_t_state_entries(int core, int cores_per_package) { /* Indicate SW_ALL coordination for T-states */ acpigen_write_TSD_package(core, cores_per_package, SW_ALL); /* Indicate FFixedHW so OS will use MSR */ acpigen_write_empty_PTC(); /* Set NVS controlled T-state limit */ acpigen_write_TPC("\\TLVL"); /* Write TSS table for MSR access */ acpigen_write_TSS_package(ARRAY_SIZE(soc_tss_table), soc_tss_table); } static int calculate_power(int tdp, int p1_ratio, int ratio) { u32 m, power; /* * M = ((1.1 - ((p1_ratio - ratio) * 0.00625)) / 1.1) ^ 2 */ m = (110000 - ((p1_ratio - ratio) * 625)) / 11; m = (m * m) / 1000; /* * Power = (ratio / p1_ratio) * m * TDP */ power = ((ratio * 100000 / p1_ratio) / 100); power *= (m / 100) * (tdp / 1000); power /= 1000; return (int)power; } static void generate_p_state_entries(int core) { int ratio_min, ratio_max, ratio_turbo, ratio_step, ratio_range_2; int coord_type, power_max, power_unit, num_entries; int ratio, power, clock, clock_max; int vid, vid_turbo, vid_min, vid_max, vid_range_2; u32 control_status; const struct pattrs *pattrs = pattrs_get(); msr_t msr; /* Inputs from CPU attributes */ ratio_max = pattrs->iacore_ratios[IACORE_MAX]; ratio_min = pattrs->iacore_ratios[IACORE_LFM]; vid_max = pattrs->iacore_vids[IACORE_MAX]; vid_min = pattrs->iacore_vids[IACORE_LFM]; /* Set P-states coordination type based on MSR disable bit */ coord_type = (pattrs->num_cpus > 2) ? SW_ALL : HW_ALL; /* Max Non-Turbo Frequency */ clock_max = (ratio_max * pattrs->bclk_khz) / 1000; /* Calculate CPU TDP in mW */ msr = rdmsr(MSR_PKG_POWER_SKU_UNIT); power_unit = 1 << (msr.lo & 0xf); msr = rdmsr(MSR_PKG_POWER_LIMIT); power_max = ((msr.lo & 0x7fff) / power_unit) * 1000; /* Write _PCT indicating use of FFixedHW */ acpigen_write_empty_PCT(); /* Write _PPC with NVS specified limit on supported P-state */ acpigen_write_PPC_NVS(); /* Write PSD indicating configured coordination type */ acpigen_write_PSD_package(core, 1, coord_type); /* Add P-state entries in _PSS table */ acpigen_write_name("_PSS"); /* Determine ratio points */ ratio_step = 1; num_entries = (ratio_max - ratio_min) / ratio_step; while (num_entries > 15) { /* ACPI max is 15 ratios */ ratio_step <<= 1; num_entries >>= 1; } /* P[T] is Turbo state if enabled */ if (get_turbo_state() == TURBO_ENABLED) { /* _PSS package count including Turbo */ acpigen_write_package(num_entries + 2); ratio_turbo = pattrs->iacore_ratios[IACORE_TURBO]; vid_turbo = pattrs->iacore_vids[IACORE_TURBO]; control_status = (ratio_turbo << 8) | vid_turbo; /* Add entry for Turbo ratio */ acpigen_write_PSS_package( clock_max + 1, /* MHz */ power_max, /* mW */ 10, /* lat1 */ 10, /* lat2 */ control_status, /* control */ control_status); /* status */ } else { /* _PSS package count without Turbo */ acpigen_write_package(num_entries + 1); ratio_turbo = ratio_max; vid_turbo = vid_max; } /* First regular entry is max non-turbo ratio */ control_status = (ratio_max << 8) | vid_max; acpigen_write_PSS_package( clock_max, /* MHz */ power_max, /* mW */ 10, /* lat1 */ 10, /* lat2 */ control_status, /* control */ control_status); /* status */ /* Set up ratio and vid ranges for VID calculation */ ratio_range_2 = (ratio_turbo - ratio_min) * 2; vid_range_2 = (vid_turbo - vid_min) * 2; /* Generate the remaining entries */ for (ratio = ratio_min + ((num_entries - 1) * ratio_step); ratio >= ratio_min; ratio -= ratio_step) { /* Calculate VID for this ratio */ vid = ((ratio - ratio_min) * vid_range_2) / ratio_range_2 + vid_min; /* Round up if remainder */ if (((ratio - ratio_min) * vid_range_2) % ratio_range_2) vid++; /* Calculate power at this ratio */ power = calculate_power(power_max, ratio_max, ratio); clock = (ratio * pattrs->bclk_khz) / 1000; control_status = (ratio << 8) | (vid & 0xff); acpigen_write_PSS_package( clock, /* MHz */ power, /* mW */ 10, /* lat1 */ 10, /* lat2 */ control_status, /* control */ control_status); /* status */ } /* Fix package length */ acpigen_pop_len(); } static void generate_cpu_entry(int core, int cores_per_package) { /* Generate Scope(\_SB) { Device(CPUx */ acpigen_write_processor_device(core); /* Generate P-state tables */ generate_p_state_entries(core); /* Generate C-state tables */ acpigen_write_CST_package(cstate_map, ARRAY_SIZE(cstate_map)); /* Generate T-state tables */ generate_t_state_entries(core, cores_per_package); acpigen_write_processor_device_end(); } void generate_cpu_entries(const struct device *device) { int core; const struct pattrs *pattrs = pattrs_get(); for (core = 0; core < pattrs->num_cpus; core++) generate_cpu_entry(core, pattrs->num_cpus); /* PPKG is usually used for thermal management of the first and only package. */ acpigen_write_processor_package("PPKG", 0, pattrs->num_cpus); /* Add a method to notify processor nodes */ acpigen_write_processor_cnot(pattrs->num_cpus); } unsigned long southcluster_write_acpi_tables(const struct device *device, unsigned long current, struct acpi_rsdp *rsdp) { acpi_header_t *ssdt2; if (!CONFIG(DISABLE_HPET)) { current = acpi_write_hpet(device, current, rsdp); current = acpi_align_current(current); } ssdt2 = (acpi_header_t *)current; memset(ssdt2, 0, sizeof(acpi_header_t)); acpi_create_serialio_ssdt(ssdt2); if (ssdt2->length) { current += ssdt2->length; acpi_add_table(rsdp, ssdt2); printk(BIOS_DEBUG, "ACPI: * SSDT2 @ %p Length %x\n", ssdt2, ssdt2->length); current = acpi_align_current(current); } else { ssdt2 = NULL; printk(BIOS_DEBUG, "ACPI: * SSDT2 not generated.\n"); } printk(BIOS_DEBUG, "current = %lx\n", current); return current; } __weak void acpi_create_serialio_ssdt(acpi_header_t *ssdt) { }