| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <acpi/acpi_device.h> |
| #include <acpi/acpigen.h> |
| #include <console/console.h> |
| #include <device/pci_ids.h> |
| #include <sar.h> |
| #include <wrdd.h> |
| |
| #include "chip.h" |
| #include "wifi_private.h" |
| |
| /* WRDS Spec Revision */ |
| #define WRDS_REVISION 0x0 |
| |
| /* EWRD Spec Revision */ |
| #define EWRD_REVISION 0x0 |
| |
| /* WRDS Domain type */ |
| #define WRDS_DOMAIN_TYPE_WIFI 0x7 |
| |
| /* EWRD Domain type */ |
| #define EWRD_DOMAIN_TYPE_WIFI 0x7 |
| |
| /* WGDS Domain type */ |
| #define WGDS_DOMAIN_TYPE_WIFI 0x7 |
| |
| /* |
| * WIFI ACPI NAME = "WF" + hex value of last 8 bits of dev_path_encode + '\0' |
| * The above representation returns unique and consistent name every time |
| * generate_wifi_acpi_name is invoked. The last 8 bits of dev_path_encode is |
| * chosen since it contains the bus address of the device. |
| */ |
| #define WIFI_ACPI_NAME_MAX_LEN 5 |
| |
| __weak int get_wifi_sar_limits(struct wifi_sar_limits *sar_limits) |
| { |
| return -1; |
| } |
| |
| static void emit_sar_acpi_structures(const struct device *dev) |
| { |
| int i, j, package_size; |
| struct wifi_sar_limits sar_limits; |
| struct wifi_sar_delta_table *wgds; |
| |
| /* CBFS SAR and SAR ACPI tables are currently used only by Intel WiFi devices. */ |
| if (dev->vendor != PCI_VENDOR_ID_INTEL) |
| return; |
| |
| /* Retrieve the sar limits data */ |
| if (get_wifi_sar_limits(&sar_limits) < 0) { |
| printk(BIOS_ERR, "Error: failed from getting SAR limits!\n"); |
| return; |
| } |
| |
| /* |
| * Name ("WRDS", Package () { |
| * Revision, |
| * Package () { |
| * Domain Type, // 0x7:WiFi |
| * WiFi SAR BIOS, // BIOS SAR Enable/disable |
| * SAR Table Set // Set#1 of SAR Table (10 bytes) |
| * } |
| * }) |
| */ |
| acpigen_write_name("WRDS"); |
| acpigen_write_package(2); |
| acpigen_write_dword(WRDS_REVISION); |
| /* Emit 'Domain Type' + 'WiFi SAR BIOS' + 10 bytes for Set#1 */ |
| package_size = 1 + 1 + BYTES_PER_SAR_LIMIT; |
| acpigen_write_package(package_size); |
| acpigen_write_dword(WRDS_DOMAIN_TYPE_WIFI); |
| acpigen_write_dword(CONFIG(SAR_ENABLE)); |
| for (i = 0; i < BYTES_PER_SAR_LIMIT; i++) |
| acpigen_write_byte(sar_limits.sar_limit[0][i]); |
| acpigen_pop_len(); |
| acpigen_pop_len(); |
| |
| /* |
| * Name ("EWRD", Package () { |
| * Revision, |
| * Package () { |
| * Domain Type, // 0x7:WiFi |
| * Dynamic SAR Enable, // Dynamic SAR Enable/disable |
| * Extended SAR sets, // Number of optional SAR table sets |
| * SAR Table Set, // Set#2 of SAR Table (10 bytes) |
| * SAR Table Set, // Set#3 of SAR Table (10 bytes) |
| * SAR Table Set // Set#4 of SAR Table (10 bytes) |
| * } |
| * }) |
| */ |
| acpigen_write_name("EWRD"); |
| acpigen_write_package(2); |
| acpigen_write_dword(EWRD_REVISION); |
| /* |
| * Emit 'Domain Type' + "Dynamic SAR Enable' + 'Extended SAR sets' |
| * + number of bytes for Set#2 & 3 & 4 |
| */ |
| package_size = 1 + 1 + 1 + (NUM_SAR_LIMITS - 1) * BYTES_PER_SAR_LIMIT; |
| acpigen_write_package(package_size); |
| acpigen_write_dword(EWRD_DOMAIN_TYPE_WIFI); |
| acpigen_write_dword(CONFIG(DSAR_ENABLE)); |
| acpigen_write_dword(CONFIG_DSAR_SET_NUM); |
| for (i = 1; i < NUM_SAR_LIMITS; i++) |
| for (j = 0; j < BYTES_PER_SAR_LIMIT; j++) |
| acpigen_write_byte(sar_limits.sar_limit[i][j]); |
| acpigen_pop_len(); |
| acpigen_pop_len(); |
| |
| if (!CONFIG(GEO_SAR_ENABLE)) |
| return; |
| |
| /* |
| * Name ("WGDS", Package() { |
| * Revision, |
| * Package() { |
| * DomainType, // 0x7:WiFi |
| * WgdsWiFiSarDeltaGroup1PowerMax1, // Group 1 FCC 2400 Max |
| * WgdsWiFiSarDeltaGroup1PowerChainA1, // Group 1 FCC 2400 A Offset |
| * WgdsWiFiSarDeltaGroup1PowerChainB1, // Group 1 FCC 2400 B Offset |
| * WgdsWiFiSarDeltaGroup1PowerMax2, // Group 1 FCC 5200 Max |
| * WgdsWiFiSarDeltaGroup1PowerChainA2, // Group 1 FCC 5200 A Offset |
| * WgdsWiFiSarDeltaGroup1PowerChainB2, // Group 1 FCC 5200 B Offset |
| * WgdsWiFiSarDeltaGroup2PowerMax1, // Group 2 EC Jap 2400 Max |
| * WgdsWiFiSarDeltaGroup2PowerChainA1, // Group 2 EC Jap 2400 A Offset |
| * WgdsWiFiSarDeltaGroup2PowerChainB1, // Group 2 EC Jap 2400 B Offset |
| * WgdsWiFiSarDeltaGroup2PowerMax2, // Group 2 EC Jap 5200 Max |
| * WgdsWiFiSarDeltaGroup2PowerChainA2, // Group 2 EC Jap 5200 A Offset |
| * WgdsWiFiSarDeltaGroup2PowerChainB2, // Group 2 EC Jap 5200 B Offset |
| * WgdsWiFiSarDeltaGroup3PowerMax1, // Group 3 ROW 2400 Max |
| * WgdsWiFiSarDeltaGroup3PowerChainA1, // Group 3 ROW 2400 A Offset |
| * WgdsWiFiSarDeltaGroup3PowerChainB1, // Group 3 ROW 2400 B Offset |
| * WgdsWiFiSarDeltaGroup3PowerMax2, // Group 3 ROW 5200 Max |
| * WgdsWiFiSarDeltaGroup3PowerChainA2, // Group 3 ROW 5200 A Offset |
| * WgdsWiFiSarDeltaGroup3PowerChainB2, // Group 3 ROW 5200 B Offset |
| * } |
| * }) |
| */ |
| |
| wgds = &sar_limits.wgds; |
| acpigen_write_name("WGDS"); |
| acpigen_write_package(2); |
| acpigen_write_dword(wgds->version); |
| /* Emit 'Domain Type' + |
| * Group specific delta of power (6 bytes * NUM_WGDS_SAR_GROUPS) |
| */ |
| package_size = sizeof(sar_limits.wgds.group) + 1; |
| acpigen_write_package(package_size); |
| acpigen_write_dword(WGDS_DOMAIN_TYPE_WIFI); |
| for (i = 0; i < SAR_NUM_WGDS_GROUPS; i++) { |
| acpigen_write_byte(wgds->group[i].power_max_2400mhz); |
| acpigen_write_byte(wgds->group[i].power_chain_a_2400mhz); |
| acpigen_write_byte(wgds->group[i].power_chain_b_2400mhz); |
| acpigen_write_byte(wgds->group[i].power_max_5200mhz); |
| acpigen_write_byte(wgds->group[i].power_chain_a_5200mhz); |
| acpigen_write_byte(wgds->group[i].power_chain_b_5200mhz); |
| } |
| |
| acpigen_pop_len(); |
| acpigen_pop_len(); |
| } |
| |
| static void wifi_ssdt_write_device(const struct device *dev, const char *path) |
| { |
| /* Device */ |
| acpigen_write_device(path); |
| acpi_device_write_uid(dev); |
| |
| if (dev->chip_ops) |
| acpigen_write_name_string("_DDN", dev->chip_ops->name); |
| |
| /* Address */ |
| acpigen_write_ADR_pci_device(dev); |
| |
| acpigen_pop_len(); /* Device */ |
| } |
| |
| static void wifi_ssdt_write_properties(const struct device *dev, const char *scope) |
| { |
| const struct drivers_wifi_generic_config *config = dev->chip_info; |
| |
| /* Scope */ |
| acpigen_write_scope(scope); |
| |
| /* Wake capabilities */ |
| if (config) |
| acpigen_write_PRW(config->wake, ACPI_S3); |
| |
| /* Fill regulatory domain structure */ |
| if (CONFIG(HAVE_REGULATORY_DOMAIN)) { |
| /* |
| * Name ("WRDD", Package () { |
| * WRDD_REVISION, // Revision |
| * Package () { |
| * WRDD_DOMAIN_TYPE_WIFI, // Domain Type, 7:WiFi |
| * wifi_regulatory_domain() // Country Identifier |
| * } |
| * }) |
| */ |
| acpigen_write_name("WRDD"); |
| acpigen_write_package(2); |
| acpigen_write_integer(WRDD_REVISION); |
| acpigen_write_package(2); |
| acpigen_write_dword(WRDD_DOMAIN_TYPE_WIFI); |
| acpigen_write_dword(wifi_regulatory_domain()); |
| acpigen_pop_len(); |
| acpigen_pop_len(); |
| } |
| |
| /* Fill Wifi sar related ACPI structures */ |
| if (CONFIG(USE_SAR)) |
| emit_sar_acpi_structures(dev); |
| |
| acpigen_pop_len(); /* Scope */ |
| |
| printk(BIOS_INFO, "%s: %s %s\n", scope, dev->chip_ops ? dev->chip_ops->name : "", |
| dev_path(dev)); |
| } |
| |
| void wifi_pcie_fill_ssdt(const struct device *dev) |
| { |
| const char *path; |
| |
| if (!is_dev_enabled(dev)) |
| return; |
| |
| path = acpi_device_path(dev); |
| if (!path) |
| return; |
| |
| wifi_ssdt_write_device(dev, path); |
| wifi_ssdt_write_properties(dev, path); |
| } |
| |
| const char *wifi_pcie_acpi_name(const struct device *dev) |
| { |
| static char wifi_acpi_name[WIFI_ACPI_NAME_MAX_LEN]; |
| |
| /* ACPI 6.3, ASL 20.2.2: (Name Objects Encoding). */ |
| snprintf(wifi_acpi_name, sizeof(wifi_acpi_name), "WF%02X", |
| (dev_path_encode(dev) & 0xff)); |
| return wifi_acpi_name; |
| } |
| |
| void wifi_cnvi_fill_ssdt(const struct device *dev) |
| { |
| const char *path; |
| |
| if (!is_dev_enabled(dev)) |
| return; |
| |
| path = acpi_device_path(dev->bus->dev); |
| if (!path) |
| return; |
| |
| wifi_ssdt_write_properties(dev, path); |
| } |