| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <acpi/acpigen.h> |
| #include <acpi/acpigen_pci.h> |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <intelblocks/pmc_ipc.h> |
| #include <soc/pci_devs.h> |
| #include "chip.h" |
| #include "dptf.h" |
| |
| /* Generic DPTF participants have a PTYP field to distinguish them */ |
| enum dptf_generic_participant_type { |
| DPTF_GENERIC_PARTICIPANT_TYPE_TSR = 0x3, |
| DPTF_GENERIC_PARTICIPANT_TYPE_TPCH = 0x5, |
| DPTF_GENERIC_PARTICIPANT_TYPE_CHARGER = 0xB, |
| DPTF_GENERIC_PARTICIPANT_TYPE_BATTERY = 0xC, |
| DPTF_GENERIC_PARTICIPANT_TYPE_POWER = 0x11, |
| }; |
| |
| #define DEFAULT_CHARGER_STR "Battery Charger" |
| #define DEFAULT_TPCH_STR "Intel PCH FIVR Participant" |
| #define DEFAULT_POWER_STR "Power Participant" |
| #define DEFAULT_BATTERY_STR "Battery Participant" |
| |
| #define PMC_IPC_COMMAND_FIVR_SIZE 0x8 |
| |
| /* |
| * Helper method to determine if a device is "used" (called out anywhere as a source or a target |
| * of any policies, and therefore should be included in the ACPI tables. |
| */ |
| static bool is_participant_used(const struct drivers_intel_dptf_config *config, |
| enum dptf_participant participant) |
| { |
| int i; |
| |
| /* Active? */ |
| for (i = 0; i < DPTF_MAX_ACTIVE_POLICIES; ++i) |
| if (config->policies.active[i].target == participant) |
| return true; |
| |
| /* Passive? */ |
| for (i = 0; i < DPTF_MAX_PASSIVE_POLICIES; ++i) |
| if (config->policies.passive[i].source == participant || |
| config->policies.passive[i].target == participant) |
| return true; |
| |
| /* Critical? */ |
| for (i = 0; i < DPTF_MAX_CRITICAL_POLICIES; ++i) |
| if (config->policies.critical[i].source == participant) |
| return true; |
| |
| /* Check fan as well (its use is implicit in the Active policy) */ |
| if (participant == DPTF_FAN && config->policies.active[0].target != DPTF_NONE) |
| return true; |
| |
| return false; |
| } |
| |
| static const char *dptf_acpi_name(const struct device *dev) |
| { |
| return "DPTF"; |
| } |
| |
| static int get_STA_value(const struct drivers_intel_dptf_config *config, |
| enum dptf_participant participant) |
| { |
| return is_participant_used(config, participant) ? |
| ACPI_STATUS_DEVICE_ALL_ON : |
| ACPI_STATUS_DEVICE_ALL_OFF; |
| } |
| |
| static void dptf_write_hid(bool is_eisa, const char *hid) |
| { |
| if (is_eisa) |
| acpigen_emit_eisaid(hid); |
| else |
| acpigen_write_string(hid); |
| } |
| |
| /* Devices with GENERIC _HID (distinguished by PTYP) */ |
| static void dptf_write_generic_participant(const char *name, |
| enum dptf_generic_participant_type ptype, |
| const char *str, int sta_val, |
| const struct dptf_platform_info *platform_info) |
| { |
| /* Auto-incrementing UID for generic participants */ |
| static int generic_uid = 0; |
| |
| acpigen_write_device(name); |
| acpigen_write_name("_HID"); |
| dptf_write_hid(platform_info->use_eisa_hids, platform_info->generic_hid); |
| |
| acpigen_write_name_integer("_UID", generic_uid++); |
| acpigen_write_STA(sta_val); |
| |
| if (str) |
| acpigen_write_name_string("_STR", str); |
| |
| acpigen_write_name_integer("PTYP", ptype); |
| |
| acpigen_pop_len(); /* Device */ |
| } |
| |
| /* \_SB.PCI0.TCPU */ |
| static void write_tcpu(const struct device *pci_dev, |
| const struct drivers_intel_dptf_config *config) |
| { |
| /* DPTF CPU device - \_SB.PCI0.TCPU */ |
| acpigen_write_scope(TCPU_SCOPE); |
| acpigen_write_device("TCPU"); |
| acpigen_write_ADR_pci_device(pci_dev); |
| acpigen_write_STA(get_STA_value(config, DPTF_CPU)); |
| acpigen_pop_len(); /* Device */ |
| acpigen_pop_len(); /* TCPU Scope */ |
| } |
| |
| /* \_SB.DPTF.TFN1 */ |
| static void write_fan(const struct drivers_intel_dptf_config *config, |
| const struct dptf_platform_info *platform_info) |
| { |
| acpigen_write_device("TFN1"); |
| acpigen_write_name("_HID"); |
| dptf_write_hid(platform_info->use_eisa_hids, platform_info->fan_hid); |
| acpigen_write_name_integer("_UID", 0); |
| acpigen_write_STA(get_STA_value(config, DPTF_FAN)); |
| acpigen_pop_len(); /* Device */ |
| } |
| |
| /* \_SB.DPTF */ |
| static void write_imok(void) |
| { |
| acpigen_write_method("IMOK", 1); |
| /* Return (Arg0) */ |
| acpigen_emit_byte(RETURN_OP); |
| acpigen_emit_byte(ARG0_OP); |
| acpigen_write_method_end(); |
| } |
| /* \_SB.DPTF */ |
| static void write_oem_variables(const struct drivers_intel_dptf_config *config) |
| { |
| int i; |
| |
| acpigen_write_name("ODVX"); |
| acpigen_write_package(DPTF_OEM_VARIABLE_COUNT); |
| for (i = 0; i < DPTF_OEM_VARIABLE_COUNT; i++) |
| acpigen_write_dword(config->oem_data.oem_variables[i]); |
| acpigen_write_package_end(); |
| |
| /* |
| * Method (ODUP, 2) |
| * Arg0 = Index of ODVX to update |
| * Arg1 = Value to place in ODVX[Arg0] |
| */ |
| acpigen_write_method_serialized("ODUP", 2); |
| /* ODVX[Arg0] = Arg1 */ |
| acpigen_write_store(); |
| acpigen_emit_byte(ARG1_OP); |
| acpigen_emit_byte(INDEX_OP); |
| acpigen_emit_namestring("ODVX"); |
| acpigen_emit_byte(ARG0_OP); |
| acpigen_emit_byte(ZERO_OP); /* Ignore Index() Destination */ |
| acpigen_write_method_end(); |
| |
| /* |
| * Method (ODGT, 1) |
| * Arg0 = Index of ODVX to get |
| */ |
| acpigen_write_method_serialized("ODGT", 1); |
| /* Return (ODVX[Arg0]) */ |
| acpigen_emit_byte(RETURN_OP); |
| acpigen_emit_byte(DEREF_OP); |
| acpigen_emit_byte(INDEX_OP); |
| acpigen_emit_namestring("ODVX"); |
| acpigen_emit_byte(ARG0_OP); |
| acpigen_emit_byte(ZERO_OP); /* Ignore Index() Destination */ |
| acpigen_write_method_end(); |
| |
| /* Method (ODVP) { Return (ODVX) } */ |
| acpigen_write_method_serialized("ODVP", 0); |
| acpigen_emit_byte(RETURN_OP); |
| acpigen_emit_namestring("ODVX"); |
| acpigen_write_method_end(); |
| } |
| |
| /* \_SB.DPTF.xxxx */ |
| static void write_generic_devices(const struct drivers_intel_dptf_config *config, |
| const struct dptf_platform_info *platform_info) |
| { |
| enum dptf_participant participant; |
| char name[ACPI_NAME_BUFFER_SIZE]; |
| int i; |
| |
| dptf_write_generic_participant("TCHG", DPTF_GENERIC_PARTICIPANT_TYPE_CHARGER, |
| DEFAULT_CHARGER_STR, |
| get_STA_value(config, DPTF_CHARGER), |
| platform_info); |
| |
| for (i = 0, participant = DPTF_TEMP_SENSOR_0; i < DPTF_MAX_TSR; ++i, ++participant) { |
| snprintf(name, sizeof(name), "TSR%1d", i); |
| dptf_write_generic_participant(name, DPTF_GENERIC_PARTICIPANT_TYPE_TSR, |
| NULL, get_STA_value(config, participant), |
| platform_info); |
| } |
| } |
| |
| static const char *get_pmc_ipcs_method(void) |
| { |
| const char *method = acpi_device_path_join( |
| pcidev_path_on_root(PCH_DEVFN_PMC), "IPCS"); |
| if (!method) { |
| printk(BIOS_ERR, "%s: Unable to find PMC device IPCS method\n", __func__); |
| return NULL; |
| } |
| return method; |
| } |
| |
| static void write_tpch_write_method(const char *tpch_write_method_name, |
| unsigned int ipc_subcmd_ctrl_value) |
| { |
| /* Get IPCS method from the PMC device */ |
| const char *ipcs = get_pmc_ipcs_method(); |
| acpigen_write_method_serialized(tpch_write_method_name, 1); |
| acpigen_emit_namestring(ipcs); |
| acpigen_write_integer(PMC_IPC_CMD_COMMAND_FIVR); |
| acpigen_write_integer(PMC_IPC_CMD_CMD_ID_FIVR_WRITE); |
| acpigen_write_integer(PMC_IPC_COMMAND_FIVR_SIZE); |
| acpigen_write_integer(ipc_subcmd_ctrl_value); |
| acpigen_emit_byte(ARG0_OP); |
| acpigen_write_zero(); |
| acpigen_write_zero(); |
| /* The reason for returning a value here is a W/A for the ESIF shell */ |
| acpigen_emit_byte(RETURN_OP); |
| acpigen_write_package(1); |
| acpigen_write_zero(); |
| acpigen_write_package_end(); |
| acpigen_write_method_end(); |
| } |
| |
| static void write_ppkg_package(const uint8_t i) |
| { |
| acpigen_write_store(); |
| acpigen_emit_byte(DEREF_OP); |
| acpigen_emit_byte(INDEX_OP); |
| acpigen_emit_byte(ARG0_OP); |
| acpigen_write_integer(i); |
| acpigen_emit_byte(ZERO_OP); |
| acpigen_emit_byte(INDEX_OP); |
| acpigen_emit_namestring("PPKG"); |
| acpigen_write_integer(i); |
| acpigen_emit_byte(ZERO_OP); |
| } |
| |
| /* |
| * Truncate Package received from IPC |
| * Arguments: |
| * Arg0: Package returned from the IPCS read call from the Pmc |
| * Return Value: |
| * Return Package with just the Status and ReadBuf0 |
| * Status returns 0 for success and 2 for device error |
| */ |
| static void write_pkgc_method(void) |
| { |
| acpigen_write_method_serialized("PKGC", 1); |
| acpigen_write_name("PPKG"); |
| acpigen_write_package(2); |
| acpigen_write_zero(); |
| acpigen_write_zero(); |
| acpigen_write_package_end(); |
| |
| write_ppkg_package(0); |
| write_ppkg_package(1); |
| |
| acpigen_write_return_namestr("PPKG"); |
| acpigen_write_method_end(); |
| } |
| |
| static void write_tpch_read_method(const char *tpch_read_method_name, |
| unsigned int ipc_subcmd_ctrl_value) |
| { |
| /* Get IPCS method from the PMC device */ |
| const char *ipcs = get_pmc_ipcs_method(); |
| acpigen_write_method_serialized(tpch_read_method_name, 0); |
| acpigen_write_store(); |
| acpigen_emit_namestring(ipcs); |
| acpigen_write_integer(PMC_IPC_CMD_COMMAND_FIVR); |
| acpigen_write_integer(PMC_IPC_CMD_CMD_ID_FIVR_READ); |
| acpigen_write_integer(PMC_IPC_COMMAND_FIVR_SIZE); |
| acpigen_write_integer(ipc_subcmd_ctrl_value); |
| acpigen_write_zero(); |
| acpigen_write_zero(); |
| acpigen_write_zero(); |
| acpigen_emit_byte(LOCAL0_OP); |
| |
| acpigen_write_store(); |
| acpigen_emit_namestring("PKGC"); |
| acpigen_emit_byte(LOCAL0_OP); |
| acpigen_emit_byte(LOCAL1_OP); |
| |
| acpigen_emit_byte(RETURN_OP); |
| acpigen_emit_byte(LOCAL1_OP); |
| acpigen_write_method_end(); |
| } |
| |
| static void write_create_tpch(const struct dptf_platform_info *platform_info) |
| { |
| acpigen_write_device("TPCH"); |
| acpigen_write_name("_HID"); |
| dptf_write_hid(platform_info->use_eisa_hids, platform_info->tpch_device_hid); |
| acpigen_write_name_string("_STR", DEFAULT_TPCH_STR); |
| acpigen_write_name_integer("PTYP", DPTF_GENERIC_PARTICIPANT_TYPE_TPCH); |
| acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON); |
| } |
| |
| static void write_tpch_methods(const struct dptf_platform_info *platform_info) |
| { |
| write_create_tpch(platform_info); |
| |
| const struct { |
| enum { READ, WRITE } type; |
| const char *method_name; |
| unsigned int subcommand; |
| } tpch_methods[] = { |
| { .type = WRITE, |
| .method_name = |
| platform_info->tpch_method_names.set_fivr_low_clock_method, |
| .subcommand = PMC_IPC_SUBCMD_RFI_CTRL0_LOGIC |
| }, |
| { .type = WRITE, |
| .method_name = |
| platform_info->tpch_method_names.set_fivr_high_clock_method, |
| .subcommand = PMC_IPC_SUBCMD_RFI_CTRL4_LOGIC |
| }, |
| { .type = READ, |
| .method_name = |
| platform_info->tpch_method_names.get_fivr_low_clock_method, |
| .subcommand = PMC_IPC_SUBCMD_RFI_CTRL0_LOGIC |
| }, |
| { .type = READ, |
| .method_name = |
| platform_info->tpch_method_names.get_fivr_high_clock_method, |
| .subcommand = PMC_IPC_SUBCMD_RFI_CTRL4_LOGIC |
| }, |
| { .type = READ, |
| .method_name = |
| platform_info->tpch_method_names.get_fivr_ssc_method, |
| .subcommand = PMC_IPC_SUBCMD_EMI_CTRL0_LOGIC |
| }, |
| { .type = READ, |
| .method_name = |
| platform_info->tpch_method_names.get_fivr_switching_fault_status, |
| .subcommand = PMC_IPC_SUBCMD_FFFC_FAULT_STATUS |
| }, |
| { .type = READ, |
| .method_name = |
| platform_info->tpch_method_names.get_fivr_switching_freq_mhz, |
| .subcommand = PMC_IPC_SUBCMD_FFFC_RFI_STATUS |
| }, |
| }; |
| |
| write_pkgc_method(); |
| for (size_t i = 0; i < ARRAY_SIZE(tpch_methods); i++) { |
| if (tpch_methods[i].type == READ) { |
| write_tpch_read_method(tpch_methods[i].method_name, |
| tpch_methods[i].subcommand); |
| } else if (tpch_methods[i].type == WRITE) { |
| write_tpch_write_method(tpch_methods[i].method_name, |
| tpch_methods[i].subcommand); |
| } |
| } |
| |
| acpigen_write_device_end(); /* TPCH Device */ |
| } |
| |
| static void write_create_tpwr(const struct drivers_intel_dptf_config *config, |
| const struct dptf_platform_info *platform_info) |
| { |
| acpigen_write_device("TPWR"); |
| acpigen_write_name("_HID"); |
| if (platform_info->tpwr_device_hid != NULL) |
| dptf_write_hid(platform_info->use_eisa_hids, platform_info->tpwr_device_hid); |
| acpigen_write_name_string("_UID", "TPWR"); |
| acpigen_write_name_string("_STR", DEFAULT_POWER_STR); |
| acpigen_write_name_integer("PTYP", DPTF_GENERIC_PARTICIPANT_TYPE_POWER); |
| acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON); |
| |
| /* PROP method */ |
| if(config->prop != 0) { |
| acpigen_write_method_serialized("PROP", 0); |
| acpigen_emit_byte(RETURN_OP); |
| acpigen_write_integer(config->prop); |
| acpigen_pop_len(); /* Method PROP */ |
| } |
| acpigen_write_device_end(); /* TPWR Power Participant Device */ |
| } |
| |
| static void write_tpwr_methods(const struct drivers_intel_dptf_config *config, |
| const struct dptf_platform_info *platform_info) |
| { |
| write_create_tpwr(config, platform_info); |
| } |
| |
| static void write_create_tbat(const struct dptf_platform_info *platform_info) |
| { |
| acpigen_write_device("TBAT"); |
| acpigen_write_name("_HID"); |
| if (platform_info->tbat_device_hid != NULL) |
| dptf_write_hid(platform_info->use_eisa_hids, platform_info->tbat_device_hid); |
| acpigen_write_name_string("_UID", "TBAT"); |
| acpigen_write_name_string("_STR", DEFAULT_BATTERY_STR); |
| acpigen_write_name_integer("PTYP", DPTF_GENERIC_PARTICIPANT_TYPE_BATTERY); |
| acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON); |
| acpigen_write_device_end(); /* TBAT Battery Participant Device */ |
| } |
| |
| |
| static void write_tbat_methods(const struct dptf_platform_info *platform_info) |
| { |
| write_create_tbat(platform_info); |
| } |
| |
| |
| /* \_SB.DPTF - note: leaves the Scope open for child devices */ |
| static void write_open_dptf_device(const struct device *dev, |
| const struct dptf_platform_info *platform_info) |
| { |
| acpigen_write_scope("\\_SB"); |
| acpigen_write_device(acpi_device_name(dev)); |
| acpigen_write_name("_HID"); |
| dptf_write_hid(platform_info->use_eisa_hids, platform_info->dptf_device_hid); |
| acpigen_write_name_integer("_UID", 0); |
| acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON); |
| } |
| |
| /* Add minimal definitions of DPTF devices into the SSDT */ |
| static void write_device_definitions(const struct device *dev) |
| { |
| const struct dptf_platform_info *platform_info = get_dptf_platform_info(); |
| const struct drivers_intel_dptf_config *config; |
| struct device *parent; |
| |
| /* The CPU device gets an _ADR that matches the ACPI PCI address for 00:04.00 */ |
| parent = dev && dev->bus ? dev->bus->dev : NULL; |
| if (!parent || parent->path.type != DEVICE_PATH_PCI) { |
| printk(BIOS_ERR, "%s: DPTF objects must live under 00:04.0 PCI device\n", |
| __func__); |
| return; |
| } |
| |
| config = config_of(dev); |
| write_tcpu(parent, config); |
| write_open_dptf_device(dev, platform_info); |
| write_fan(config, platform_info); |
| write_oem_variables(config); |
| write_imok(); |
| write_generic_devices(config, platform_info); |
| |
| if (CONFIG(DRIVERS_INTEL_DPTF_SUPPORTS_TPCH)) |
| write_tpch_methods(platform_info); |
| |
| if (CONFIG(DRIVERS_INTEL_DPTF_SUPPORTS_TPWR)) |
| write_tpwr_methods(config, platform_info); |
| |
| if (CONFIG(DRIVERS_INTEL_DPTF_SUPPORTS_TBAT)) |
| write_tbat_methods(platform_info); |
| |
| acpigen_pop_len(); /* DPTF Device (write_open_dptf_device) */ |
| acpigen_pop_len(); /* Scope */ |
| } |
| |
| /* Emites policy definitions for each policy type */ |
| static void write_policies(const struct drivers_intel_dptf_config *config) |
| { |
| dptf_write_enabled_policies(config->policies.active, DPTF_MAX_ACTIVE_POLICIES, |
| config->policies.passive, DPTF_MAX_PASSIVE_POLICIES, |
| config->policies.critical, DPTF_MAX_CRITICAL_POLICIES); |
| |
| dptf_write_active_policies(config->policies.active, |
| DPTF_MAX_ACTIVE_POLICIES); |
| |
| dptf_write_passive_policies(config->policies.passive, |
| DPTF_MAX_PASSIVE_POLICIES); |
| |
| dptf_write_critical_policies(config->policies.critical, |
| DPTF_MAX_CRITICAL_POLICIES); |
| } |
| |
| /* Writes other static tables that are used by DPTF */ |
| static void write_controls(const struct drivers_intel_dptf_config *config) |
| { |
| dptf_write_charger_perf(config->controls.charger_perf, DPTF_MAX_CHARGER_PERF_STATES); |
| dptf_write_fan_perf(config->controls.fan_perf, DPTF_MAX_FAN_PERF_STATES); |
| dptf_write_power_limits(&config->controls.power_limits); |
| } |
| |
| /* Options to control the behavior of devices */ |
| static void write_options(const struct drivers_intel_dptf_config *config) |
| { |
| enum dptf_participant p; |
| int i; |
| |
| /* Fan options */ |
| dptf_write_scope(DPTF_FAN); |
| dptf_write_fan_options(config->options.fan.fine_grained_control, |
| config->options.fan.step_size, |
| config->options.fan.low_speed_notify); |
| acpigen_pop_len(); /* Scope */ |
| |
| /* TSR options */ |
| for (p = DPTF_TEMP_SENSOR_0, i = 0; p <= DPTF_TEMP_SENSOR_4; ++p, ++i) { |
| if (is_participant_used(config, p) && (config->options.tsr[i].hysteresis || |
| config->options.tsr[i].desc)) { |
| dptf_write_scope(p); |
| dptf_write_tsr_hysteresis(config->options.tsr[i].hysteresis); |
| dptf_write_STR(config->options.tsr[i].desc); |
| acpigen_pop_len(); /* Scope */ |
| } |
| } |
| } |
| |
| /* Add custom tables and methods to SSDT */ |
| static void dptf_fill_ssdt(const struct device *dev) |
| { |
| struct drivers_intel_dptf_config *config = config_of(dev); |
| |
| write_device_definitions(dev); |
| write_policies(config); |
| write_controls(config); |
| write_options(config); |
| |
| printk(BIOS_INFO, DPTF_DEVICE_PATH ": %s at %s\n", dev->chip_ops->name, dev_path(dev)); |
| } |
| |
| static struct device_operations dptf_ops = { |
| .read_resources = noop_read_resources, |
| .set_resources = noop_set_resources, |
| .acpi_name = dptf_acpi_name, |
| .acpi_fill_ssdt = dptf_fill_ssdt, |
| }; |
| |
| static void dptf_enable_dev(struct device *dev) |
| { |
| dev->ops = &dptf_ops; |
| } |
| |
| struct chip_operations drivers_intel_dptf_ops = { |
| CHIP_NAME("Intel DPTF") |
| .enable_dev = dptf_enable_dev, |
| }; |