acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state) { acpi_status status; union acpi_operand_object *string_desc; union acpi_operand_object *return_desc; acpi_native_uint i; ACPI_FUNCTION_TRACE(ut_osi_implementation); /* Validate the string input argument */ string_desc = walk_state->arguments[0].object; if (!string_desc || (string_desc->common.type != ACPI_TYPE_STRING)) { return_ACPI_STATUS(AE_TYPE); } /* Create a return object */ return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); if (!return_desc) { return_ACPI_STATUS(AE_NO_MEMORY); } /* Default return value is SUPPORTED */ return_desc->integer.value = ACPI_UINT32_MAX; walk_state->return_desc = return_desc; /* Compare input string to static table of supported interfaces */ for (i = 0; i < ACPI_ARRAY_LENGTH(acpi_interfaces_supported); i++) { if (!ACPI_STRCMP (string_desc->string.pointer, acpi_interfaces_supported[i])) { /* The interface is supported */ return_ACPI_STATUS(AE_CTRL_TERMINATE); } } /* * Did not match the string in the static table, call the host OSL to * check for a match with one of the optional strings (such as * "Module Device", "3.0 Thermal Model", etc.) */ status = acpi_os_validate_interface(string_desc->string.pointer); if (ACPI_SUCCESS(status)) { /* The interface is supported */ return_ACPI_STATUS(AE_CTRL_TERMINATE); } /* The interface is not supported */ return_desc->integer.value = 0; return_ACPI_STATUS(AE_CTRL_TERMINATE); }
acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state) { acpi_status status; union acpi_operand_object *string_desc; union acpi_operand_object *return_desc; u32 return_value; u32 i; ACPI_FUNCTION_TRACE(ut_osi_implementation); /* Validate the string input argument */ string_desc = walk_state->arguments[0].object; if (!string_desc || (string_desc->common.type != ACPI_TYPE_STRING)) { return_ACPI_STATUS(AE_TYPE); } /* Create a return object */ return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); if (!return_desc) { return_ACPI_STATUS(AE_NO_MEMORY); } /* Default return value is 0, NOT SUPPORTED */ return_value = 0; /* Compare input string to static table of supported interfaces */ for (i = 0; i < ACPI_ARRAY_LENGTH(acpi_interfaces_supported); i++) { if (!ACPI_STRCMP(string_desc->string.pointer, acpi_interfaces_supported[i].name)) { /* * The interface is supported. * Update the osi_data if necessary. We keep track of the latest * version of Windows that has been requested by the BIOS. */ if (acpi_interfaces_supported[i].value > acpi_gbl_osi_data) { acpi_gbl_osi_data = acpi_interfaces_supported[i].value; } return_value = ACPI_UINT32_MAX; goto exit; } } /* * Did not match the string in the static table, call the host OSL to * check for a match with one of the optional strings (such as * "Module Device", "3.0 Thermal Model", etc.) */ status = acpi_os_validate_interface(string_desc->string.pointer); if (ACPI_SUCCESS(status)) { /* The interface is supported */ return_value = ACPI_UINT32_MAX; } exit: ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "ACPI: BIOS _OSI(%s) is %ssupported\n", string_desc->string.pointer, return_value == 0 ? "not " : "")); /* Complete the return value */ return_desc->integer.value = return_value; walk_state->return_desc = return_desc; return_ACPI_STATUS (AE_OK); }