The purpose for this patch is submit HP BIOSCFG driver to be list of
HP Linux kernel drivers. The driver include a total of 12 files
broken in several patches. This is set 2 of 4.
Signed-off-by: Jorge Lopez <jorge.lopez2@xxxxxx>
---
Based on the latest platform-drivers-x86.git/for-next
---
.../x86/hp/hp-bioscfg/int-attributes.c | 478 ++++++++++++++
.../x86/hp/hp-bioscfg/ordered-attributes.c | 586 ++++++++++++++++++
.../x86/hp/hp-bioscfg/passwdattr-interface.c | 50 ++
3 files changed, 1114 insertions(+)
create mode 100644 drivers/platform/x86/hp/hp-bioscfg/int-attributes.c
create mode 100644 drivers/platform/x86/hp/hp-bioscfg/ordered-attributes.c
create mode 100644 drivers/platform/x86/hp/hp-bioscfg/passwdattr-interface.c
diff --git a/drivers/platform/x86/hp/hp-bioscfg/int-attributes.c b/drivers/platform/x86/hp/hp-bioscfg/int-attributes.c
new file mode 100644
index 000000000000..dc295ac4f83a
--- /dev/null
+++ b/drivers/platform/x86/hp/hp-bioscfg/int-attributes.c
@@ -0,0 +1,478 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Functions corresponding to integer type attributes under
+ * BIOS Enumeration GUID for use with hp-bioscfg driver.
+ *
+ * Copyright (c) 2022 Hewlett-Packard Inc.
+ */
+
+#include "bioscfg.h"
+
+get_instance_id(integer);
+
+static ssize_t current_value_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
+{
+ int instance_id = get_integer_instance_id(kobj);
+ union acpi_object *obj = NULL;
+ ssize_t ret;
+
+ if (instance_id < 0)
+ return instance_id;
+
+ /* need to use specific instance_id and guid combination to get right data */
+ obj = get_wmiobj_pointer(instance_id, HP_WMI_BIOS_INTEGER_GUID);
+ if (!obj) {
+ ret = -EIO;
+ goto current_value_show_out;
+ }
+
+ ret = snprintf(buf, PAGE_SIZE, "%d\n", bioscfg_drv.integer_data[instance_id].current_value);
+
+current_value_show_out:
+ kfree(obj);
+ return ret;
+}
+
+/*
+ * validate_integer_input() -
+ * Validate input of current_value against lower and upper bound
+ *
+ * @instance_id: The instance on which input is validated
+ * @buf: Input value
+ */
+static int validate_integer_input(int instance_id, char *buf)
+{
+ int in_val;
+ int ret;
+
+ ret = kstrtoint(buf, 10, &in_val);
+
+ /* BIOS treats it as a read only attribute */
+ if (bioscfg_drv.integer_data[instance_id].is_readonly)
+ return -EIO;
+
+ if (in_val < bioscfg_drv.integer_data[instance_id].lower_bound ||
+ in_val > bioscfg_drv.integer_data[instance_id].upper_bound)
+ return -EINVAL;
+
+ bioscfg_drv.integer_data[instance_id].new_value = in_val;
+ /*
+ * set pending reboot flag depending on
+ * "RequiresPhysicalPresence" value
+ */
+ if (bioscfg_drv.integer_data[instance_id].requires_physical_presence)
+ bioscfg_drv.pending_reboot = TRUE;
+ return 0;
+}
+
+static void update_integer_value(int instance_id)
+{
+ bioscfg_drv.integer_data[instance_id].current_value =
+ bioscfg_drv.integer_data[instance_id].new_value;
+}
+
+attribute_s_property_show(display_name_language_code, integer);
+static struct kobj_attribute integer_display_langcode =
+ __ATTR_RO(display_name_language_code);
+
+attribute_s_property_show(display_name, integer);
+static struct kobj_attribute integer_display_name =
+ __ATTR_RO(display_name);
+
+attribute_property_store(current_value, integer);
+static struct kobj_attribute integer_current_val =
+ __ATTR_RW_MODE(current_value, 0600);
+
+attribute_n_property_show(lower_bound, integer);
+static struct kobj_attribute integer_lower_bound =
+ __ATTR_RO(lower_bound);
+
+attribute_n_property_show(upper_bound, integer);
+static struct kobj_attribute integer_upper_bound =
+ __ATTR_RO(upper_bound);
+
+attribute_n_property_show(scalar_increment, integer);
+static struct kobj_attribute integer_scalar_increment =
+ __ATTR_RO(scalar_increment);
+
+static ssize_t type_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "integer\n");
+}
+static struct kobj_attribute integer_type =
+ __ATTR_RO(type);
+
+static struct attribute *integer_attrs[] = {
+ &integer_display_langcode.attr,
+ &integer_display_name.attr,
+ &integer_current_val.attr,
+ &integer_lower_bound.attr,
+ &integer_upper_bound.attr,
+ &integer_scalar_increment.attr,
+ &integer_type.attr,
+ NULL,
+};
+
+static const struct attribute_group integer_attr_group = {
+ .attrs = integer_attrs,
+};
+
+int alloc_integer_data(void)
+{
+ int ret = 0;
+
+ bioscfg_drv.integer_instances_count = get_instance_count(HP_WMI_BIOS_INTEGER_GUID);
+ bioscfg_drv.integer_data = kcalloc(bioscfg_drv.integer_instances_count,
+ sizeof(struct integer_data), GFP_KERNEL);
+ if (!bioscfg_drv.integer_data) {
+ bioscfg_drv.integer_instances_count = 0;
+ ret = -ENOMEM;
+ }
+ return ret;
+}
+
+/*
+ * populate_int_data() -
+ * Populate all properties of an instance under integer attribute
+ *
+ * @elements: ACPI object with integer data
+ * @instance_id: The instance to enumerate
+ * @attr_name_kobj: The parent kernel object
+ */
+int populate_integer_package_data(union acpi_object *elements, int instance_id,
+ struct kobject *attr_name_kobj)
+{
+ char *str_value = NULL;
+ int str_len;
+ int ret = 0;
+
+ bioscfg_drv.integer_data[instance_id].type = HPWMI_INTEGER_TYPE;
+ bioscfg_drv.integer_data[instance_id].attr_name_kobj = attr_name_kobj;
+
+ ret = convert_hexstr_to_str(&(elements[NAME].string.pointer),
+ elements[NAME].string.length,
+ &str_value, &str_len);
+ if (ACPI_FAILURE(ret)) {
+ kfree(str_value);
+ return ret;
+ }
+
+ strscpy(bioscfg_drv.integer_data[instance_id].attribute_name,
+ str_value,
+ sizeof(bioscfg_drv.integer_data[instance_id].attribute_name));
+ strscpy(bioscfg_drv.integer_data[instance_id].display_name,
+ str_value,
+ sizeof(bioscfg_drv.integer_data[instance_id].display_name));
+ kfree(str_value);
+ str_value = NULL;
+
+ populate_integer_elements_from_package(elements, instance_id, HPWMI_INTEGER_TYPE);
+ update_attribute_permissions(bioscfg_drv.integer_data[instance_id].is_readonly,
+ &integer_current_val);
+ friendly_user_name_update(bioscfg_drv.integer_data[instance_id].path,
+ attr_name_kobj->name,
+ bioscfg_drv.integer_data[instance_id].display_name,
+ sizeof(bioscfg_drv.integer_data[instance_id].display_name));
+ return sysfs_create_group(attr_name_kobj, &integer_attr_group);
+}
+
+int populate_integer_elements_from_package(union acpi_object *elements,
+ int instance_id,
+ enum hp_wmi_data_type type)
+{
+ char *str_value = NULL;
+ int value_len;
+ int status = 0;
+ u32 size = 0;
+ u32 int_value;
+ int elem = 0;
+ int reqs;
+ int eloc;
+
+ if (!elements)
+ return -EINVAL;
+
+ strscpy(bioscfg_drv.integer_data[instance_id].display_name_language_code,
+ LANG_CODE_STR,
+ sizeof(bioscfg_drv.integer_data[instance_id].display_name_language_code));
+
+ for (elem = 1, eloc = 1; elem < hp_wmi_elements_count[type]; elem++, eloc++) {
+
+ switch (elements[elem].type) {
+ case ACPI_TYPE_STRING:
+
+ if (elem != PREREQUISITES) {
+ status = convert_hexstr_to_str(&elements[elem].string.pointer,
+ elements[elem].string.length,
+ &str_value, &value_len);
+
+ if (ACPI_FAILURE(status))
+ continue;
+ }
+ break;
+ case ACPI_TYPE_INTEGER:
+ int_value = (u32)elements[elem].integer.value;
+ break;
+ default:
+ pr_warn("Unsupported object type [%d]\n", elements[elem].type);
+ continue;
+ }
+ /*
+ * Stop if extra counter is greater than total number
+ * of elements for integer type.
+ */
+ if (eloc == hp_wmi_elements_count[type])
+ goto exit_integer_package;
+
+ /* Assign appropriate element value to corresponding field*/
+ switch (eloc) {
+ case VALUE:
+ status = kstrtoint(str_value, 10, &int_value);
+ if (status)
+ continue;
+
+ bioscfg_drv.integer_data[instance_id].current_value = int_value;
+ break;
+ case PATH:
+ strscpy(bioscfg_drv.integer_data[instance_id].path, str_value,
+ sizeof(bioscfg_drv.integer_data[instance_id].path));
+ break;
+ case IS_READONLY:
+ bioscfg_drv.integer_data[instance_id].is_readonly = int_value;
+ break;
+ case DISPLAY_IN_UI:
+ bioscfg_drv.integer_data[instance_id].display_in_ui = int_value;
+ break;
+ case REQUIRES_PHYSICAL_PRESENCE:
+ bioscfg_drv.integer_data[instance_id].requires_physical_presence = int_value;
+ break;
+ case SEQUENCE:
+ bioscfg_drv.integer_data[instance_id].sequence = int_value;
+ break;
+ case PREREQUISITE_SIZE:
+ bioscfg_drv.integer_data[instance_id].prerequisitesize = int_value;
+
+ if (int_value > 20)
+ pr_warn("Prerequisites size value exceeded the maximum number of elements supported or data may be malformed\n");
+ /*
+ * prerequisites element is omitted when
+ * prerequisitesSize value is zero.
+ */
+ if (int_value == 0)
+ eloc++;
+ break;
+ case PREREQUISITES:
+ size = bioscfg_drv.integer_data[instance_id].prerequisitesize;
+ for (reqs = 0; reqs < size; reqs++) {
+ status = convert_hexstr_to_str(&elements[elem].string.pointer,
+ elements[elem].string.length,
+ &str_value, &value_len);
+
+ if (ACPI_FAILURE(status))
+ continue;
+
+ strlcat(bioscfg_drv.integer_data[instance_id].prerequisites,
+ str_value,
+ sizeof(bioscfg_drv.integer_data[instance_id].prerequisites));
+ if (reqs != (size - 1))
+ strlcat(bioscfg_drv.integer_data[instance_id].prerequisites, ";",
+ sizeof(bioscfg_drv.integer_data[instance_id].prerequisites));
+
+ kfree(str_value);
+ str_value = NULL;
+ }
+ break;
+
+ case SECURITY_LEVEL:
+ bioscfg_drv.integer_data[instance_id].security_level = int_value;
+ break;
+ case INT_LOWER_BOUND:
+ bioscfg_drv.integer_data[instance_id].lower_bound = int_value;
+ break;
+ case INT_UPPER_BOUND:
+ bioscfg_drv.integer_data[instance_id].upper_bound = int_value;
+ break;
+ case INT_SCALAR_INCREMENT:
+ bioscfg_drv.integer_data[instance_id].scalar_increment = int_value;
+ break;
+
+ default:
+ pr_warn("Invalid element: %d found in Integer attribute or data may be malformed\n", elem);
+ break;
+ }
+ kfree(str_value);
+ str_value = NULL;
+ }
+exit_integer_package:
+ kfree(str_value);
+ str_value = NULL;
+ return 0;
+}
+
+
+/*
+ * populate_integer_buffer_data() -
+ * Populate all properties of an instance under integer attribute
+ *
+ * @integer_obj: ACPI object with integer data
+ * @instance_id: The instance to enumerate
+ * @attr_name_kobj: The parent kernel object
+ */
+int populate_integer_buffer_data(union acpi_object *integer_obj, int instance_id,
+ struct kobject *attr_name_kobj)
+{
+ bioscfg_drv.integer_data[instance_id].type = HPWMI_INTEGER_TYPE;
+ bioscfg_drv.integer_data[instance_id].attr_name_kobj = attr_name_kobj;
+
+ strscpy(bioscfg_drv.integer_data[instance_id].attribute_name,
+ attr_name_kobj->name,
+ sizeof(bioscfg_drv.integer_data[instance_id].attribute_name));
+
+ strscpy(bioscfg_drv.integer_data[instance_id].display_name,
+ attr_name_kobj->name,
+ sizeof(bioscfg_drv.integer_data[instance_id].display_name));
+
+ /* Populate integer elements */
+ populate_integer_elements_from_buffer(integer_obj, instance_id, HPWMI_INTEGER_TYPE);
+ update_attribute_permissions(bioscfg_drv.integer_data[instance_id].is_readonly,
+ &integer_current_val);
+ friendly_user_name_update(bioscfg_drv.integer_data[instance_id].path,
+ attr_name_kobj->name,
+ bioscfg_drv.integer_data[instance_id].display_name,
+ sizeof(bioscfg_drv.integer_data[instance_id].display_name));
+
+ return sysfs_create_group(attr_name_kobj, &integer_attr_group);
+}
+
+int populate_integer_elements_from_buffer(union acpi_object *integer_obj,
+ int instance_id, enum hp_wmi_data_type type)
+{
+ int status;
+ char *str = NULL;
+ int elem;
+ int reqs;
+ int integer;
+ int size = 0;
+ int ret;
+
+ elem = 0;
+ strscpy(bioscfg_drv.integer_data[instance_id].display_name_language_code,
+ LANG_CODE_STR,
+ sizeof(bioscfg_drv.integer_data[instance_id].display_name_language_code));
+
+ for (elem = 1; elem < 3; elem++) {
+
+ status = get_string_from_buffer((u16 **)&integer_obj->buffer.pointer, &str);
+ if (ACPI_FAILURE(status))
+ continue;
+
+ switch (elem) {
+ case VALUE:
+ ret = kstrtoint(str, 10, &integer);
+ if (ret)
+ continue;
+
+ bioscfg_drv.integer_data[instance_id].current_value = integer;
+ break;
+ case PATH:
+ strscpy(bioscfg_drv.integer_data[instance_id].path, str,
+ sizeof(bioscfg_drv.integer_data[instance_id].path));
+ break;
+ default:
+ pr_warn("Invalid element: %d found in Integer attribute or data may be malformed\n", elem);
+ break;
+ }
+ kfree(str);
+ str = NULL;
+ }
+
+ for (elem = 3; elem < hp_wmi_elements_count[type]; elem++) {
+
+ if (elem != PREREQUISITES)
+ status = get_integer_from_buffer((int **)&integer_obj->buffer.pointer, (int *)&integer);
+
+ if (ACPI_FAILURE(status))
+ continue;
+
+ switch (elem) {
+
+ case IS_READONLY:
+ bioscfg_drv.integer_data[instance_id].is_readonly = integer;
+ break;
+ case DISPLAY_IN_UI:
+ bioscfg_drv.integer_data[instance_id].display_in_ui = integer;
+ break;
+ case REQUIRES_PHYSICAL_PRESENCE:
+ bioscfg_drv.integer_data[instance_id].requires_physical_presence = integer;
+ break;
+ case SEQUENCE:
+ bioscfg_drv.integer_data[instance_id].sequence = integer;
+ break;
+ case PREREQUISITE_SIZE:
+ bioscfg_drv.integer_data[instance_id].prerequisitesize = integer;
+ size = integer;
+ if (size > 20)
+ pr_warn("Prerequisites size value exceeded the maximum number of elements supported or data may be malformed\n");
+
+ break;
+ case PREREQUISITES:
+ for (reqs = 0; reqs < size; reqs++) {
+ status = get_string_from_buffer((u16 **)&integer_obj->buffer.pointer, &str);
+ if (ACPI_FAILURE(status))
+ continue;
+
+ strlcat(bioscfg_drv.integer_data[instance_id].prerequisites,
+ str,
+ sizeof(bioscfg_drv.integer_data[instance_id].prerequisites));
+ if (reqs != (size - 1))
+ strlcat(bioscfg_drv.integer_data[instance_id].prerequisites, ";",
+ sizeof(bioscfg_drv.integer_data[instance_id].prerequisites));
+
+ kfree(str);
+ str = NULL;
+ }
+ break;
+
+ case SECURITY_LEVEL:
+ bioscfg_drv.integer_data[instance_id].security_level = integer;
+ break;
+ case INT_LOWER_BOUND:
+ bioscfg_drv.integer_data[instance_id].lower_bound = integer;
+ break;
+ case INT_UPPER_BOUND:
+ bioscfg_drv.integer_data[instance_id].upper_bound = integer;
+ break;
+ case INT_SCALAR_INCREMENT:
+ bioscfg_drv.integer_data[instance_id].scalar_increment = integer;
+ break;
+
+ default:
+ pr_warn("Invalid element: %d found in Integer attribute or data may be malformed\n", elem);
+ break;
+ }
+ kfree(str);
+ str = NULL;
+ }
+ return 0;
+}
+
+/*
+ * exit_integer_attributes() - Clear all attribute data
+ *
+ * Clears all data allocated for this group of attributes
+ */
+void exit_integer_attributes(void)
+{
+ int instance_id;
+
+ for (instance_id = 0; instance_id < bioscfg_drv.integer_instances_count; instance_id++) {
+ if (bioscfg_drv.integer_data[instance_id].attr_name_kobj)
+ sysfs_remove_group(bioscfg_drv.integer_data[instance_id].attr_name_kobj,
+ &integer_attr_group);
+ }
+ bioscfg_drv.integer_instances_count = 0;
+
+ kfree(bioscfg_drv.integer_data);
+ bioscfg_drv.integer_data = NULL;
+}
diff --git a/drivers/platform/x86/hp/hp-bioscfg/ordered-attributes.c b/drivers/platform/x86/hp/hp-bioscfg/ordered-attributes.c
new file mode 100644
index 000000000000..603222c086a7
--- /dev/null
+++ b/drivers/platform/x86/hp/hp-bioscfg/ordered-attributes.c
@@ -0,0 +1,586 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Functions corresponding to ordered list type attributes under
+ * BIOS ORDERED LIST GUID for use with hp-bioscfg driver.
+ *
+ * Copyright (c) 2022 HP Development Company, L.P.
+ */
+
+#include "bioscfg.h"
+
+get_instance_id(ordered_list);
+
+static ssize_t current_value_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
+{
+ int instance_id = get_ordered_list_instance_id(kobj);
+ union acpi_object *obj = NULL;
+ ssize_t ret;
+
+ if (instance_id < 0)
+ return -EIO;
+
+ /* need to use specific instance_id and guid combination to get right data */
+ obj = get_wmiobj_pointer(instance_id, HP_WMI_BIOS_ORDERED_LIST_GUID);
+ if (!obj)
+ return -EIO;
+
+ ret = snprintf(buf, PAGE_SIZE, "%s\n",
+ bioscfg_drv.ordered_list_data[instance_id].current_value);
+
+ kfree(obj);
+ return ret;
+}
+
+/*
+ * validate_ordered_list_value -
+ * Validate input of current_value against possible values
+ *
+ * @instance_id: The instance on which input is validated
+ * @buf: Input value
+ */
+static int validate_ordered_list_values(int instance_id, const char *buf)
+{
+ char *options = NULL;
+ char *p;
+ int ret = 0;
+ int found = 0;
+ char *new_values = NULL;
+ char *value;
+ int elem;
+ int elem_found = 0;
+
+ options = kstrdup(bioscfg_drv.ordered_list_data[instance_id].elements,
+ GFP_KERNEL);
+ new_values = kstrdup(buf, GFP_KERNEL);
+
+ if (!options || !new_values) {
+ ret = -ENOMEM;
+ goto validate_ordered_list_value_exit;
+ }
+
+ /* Is it a read only attribute */
+ if (bioscfg_drv.ordered_list_data[instance_id].is_readonly) {
+ ret = -EIO;
+ goto validate_ordered_list_value_exit;
+ }
+
+ /*
+ * Changes to ordered list values require checking that new
+ * values are found in the list of elements.
+ */
+ for (elem = 0; elem < bioscfg_drv.ordered_list_data[instance_id].size; elem++) {
+
+ value = strsep(&new_values, ",");
+ if (value != NULL) {
+ if (!*value)
+ continue;
+ elem_found++;
+ }
+
+ while ((p = strsep(&options, ";")) != NULL) {
+ if (!*p)
+ continue;
+
+ if (!strcasecmp(p, value)) {
+ found = 1;
+ break;
+ }
+ }
+
+ if (!found) {
+ pr_warn("\"%s\" is not a valid ordered list element\n", value);
+ ret = -EINVAL;
+ goto validate_ordered_list_value_exit;
+ }
+ }
+
+ if (elem_found == bioscfg_drv.ordered_list_data[instance_id].size) {
+ pr_warn("Number of new values is not equal to number of ordered list elements (%d)\n",
+ bioscfg_drv.ordered_list_data[instance_id].size);
+ ret = -EINVAL;
+ goto validate_ordered_list_value_exit;
+ }
+
+validate_ordered_list_value_exit:
+ kfree(options);
+ kfree(new_values);
+ return ret;
+}
+
+/*
+ * validate_ordered_input() -
+ * Validate input of current_value against possible values
+ *
+ * @instance_id: The instance on which input is validated
+ * @buf: Input value
+ */
+static int validate_ordered_list_input(int instance_id, const char *buf)
+{
+ int ret = 0;
+
+ ret = validate_ordered_list_values(instance_id, buf);
+ if (ret < 0) {
+ ret = -EINVAL;
+ goto validate_ordered_list_exit;
+ }
+
+ strscpy(bioscfg_drv.ordered_list_data[instance_id].new_value,
+ buf,
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].new_value));
+ /*
+ * set pending reboot flag depending on
+ * "RequiresPhysicalPresence" value
+ */
+ if (bioscfg_drv.ordered_list_data[instance_id].requires_physical_presence)
+ bioscfg_drv.pending_reboot = TRUE;
+
+validate_ordered_list_exit:
+ return ret;
+}
+
+static void update_ordered_list_value(int instance_id)
+{
+ strscpy(bioscfg_drv.ordered_list_data[instance_id].current_value,
+ bioscfg_drv.ordered_list_data[instance_id].new_value,
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].current_value));
+}
+
+attribute_s_property_show(display_name_language_code, ordered_list);
+static struct kobj_attribute ordered_list_display_langcode =
+ __ATTR_RO(display_name_language_code);
+
+attribute_s_property_show(display_name, ordered_list);
+static struct kobj_attribute ordered_list_display_name =
+ __ATTR_RO(display_name);
+
+attribute_property_store(current_value, ordered_list);
+static struct kobj_attribute ordered_list_current_val =
+ __ATTR_RW_MODE(current_value, 0600);
+
+attribute_s_property_show(elements, ordered_list);
+static struct kobj_attribute ordered_list_elements_val =
+ __ATTR_RO(elements);
+
+attribute_n_property_show(size, ordered_list);
+static struct kobj_attribute ordered_list_size_val =
+ __ATTR_RO(size);
+
+static ssize_t type_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "ordered-list\n");
+}
+static struct kobj_attribute ordered_list_type =
+ __ATTR_RO(type);
+
+static struct attribute *ordered_list_attrs[] = {
+ &ordered_list_display_langcode.attr,
+ &ordered_list_display_name.attr,
+ &ordered_list_current_val.attr,
+ &ordered_list_elements_val.attr,
+ &ordered_list_size_val.attr,
+ &ordered_list_type.attr,
+ NULL,
+};
+
+static const struct attribute_group ordered_list_attr_group = {
+ .attrs = ordered_list_attrs,
+};
+
+int alloc_ordered_list_data(void)
+{
+ int ret = 0;
+
+ bioscfg_drv.ordered_list_instances_count =
+ get_instance_count(HP_WMI_BIOS_ORDERED_LIST_GUID);
+ bioscfg_drv.ordered_list_data = kcalloc(bioscfg_drv.ordered_list_instances_count,
+ sizeof(struct ordered_list_data), GFP_KERNEL);
+ if (!bioscfg_drv.ordered_list_data) {
+ bioscfg_drv.ordered_list_instances_count = 0;
+ ret = -ENOMEM;
+ }
+ return ret;
+}
+
+/*
+ * populate_ordered_list_package_data() -
+ * Populate all properties of an instance under ordered_list attribute
+ *
+ * @order_obj: ACPI object with ordered_list data
+ * @instance_id: The instance to enumerate
+ * @attr_name_kobj: The parent kernel object
+ */
+int populate_ordered_list_package_data(union acpi_object *order_obj, int instance_id,
+ struct kobject *attr_name_kobj)
+{
+ char *str_value = NULL;
+ int str_len;
+ int ret = 0;
+
+ bioscfg_drv.ordered_list_data[instance_id].type = HPWMI_ORDERED_LIST_TYPE;
+ bioscfg_drv.ordered_list_data[instance_id].attr_name_kobj = attr_name_kobj;
+ ret = convert_hexstr_to_str(&(order_obj[NAME].string.pointer),
+ order_obj[NAME].string.length,
+ &str_value, &str_len);
+
+ if (ACPI_FAILURE(ret)) {
+ kfree(str_value);
+ return ret;
+ }
+
+ strscpy(bioscfg_drv.ordered_list_data[instance_id].attribute_name,
+ str_value,
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].attribute_name));
+ strscpy(bioscfg_drv.ordered_list_data[instance_id].display_name,
+ str_value,
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].display_name));
+
+ kfree(str_value);
+ str_value = NULL;
+
+ populate_ordered_list_elements_from_package(order_obj, instance_id, HPWMI_ORDERED_LIST_TYPE);
+ update_attribute_permissions(bioscfg_drv.ordered_list_data[instance_id].is_readonly,
+ &ordered_list_current_val);
+ friendly_user_name_update(bioscfg_drv.ordered_list_data[instance_id].path,
+ attr_name_kobj->name,
+ bioscfg_drv.ordered_list_data[instance_id].display_name,
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].display_name));
+ return sysfs_create_group(attr_name_kobj, &ordered_list_attr_group);
+}
+
+int populate_ordered_list_elements_from_package(union acpi_object *order_obj,
+ int instance_id,
+ enum hp_wmi_data_type type)
+{
+ char *str_value = NULL;
+ int value_len;
+ int status = 0;
+ u32 size = 0;
+ u32 int_value;
+ int elem = 0;
+ int reqs;
+ int eloc;
+ char *tmpstr = NULL;
+ char *part_tmp = NULL;
+ int tmp_len = 0;
+ char *part = NULL;
+
+ strscpy(bioscfg_drv.ordered_list_data[instance_id].display_name_language_code,
+ LANG_CODE_STR,
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].display_name_language_code));
+
+ for (elem = 1, eloc = 1; elem < hp_wmi_elements_count[type]; elem++, eloc++) {
+
+ switch (order_obj[elem].type) {
+ case ACPI_TYPE_STRING:
+
+ if (elem != PREREQUISITES) {
+ status = convert_hexstr_to_str(&order_obj[elem].string.pointer,
+ order_obj[elem].string.length,
+ &str_value, &value_len);
+ if (ACPI_FAILURE(status))
+ continue;
+
+ }
+ break;
+ case ACPI_TYPE_INTEGER:
+ int_value = (u32)order_obj[elem].integer.value;
+ break;
+ default:
+ pr_warn("Unsupported object type [%d]\n", order_obj[elem].type);
+ continue;
+ }
+
+ /*
+ * Stop if extra counter is greater than total number
+ * of elements for ordered list type
+ */
+ if (eloc == hp_wmi_elements_count[type])
+ goto exit_ordered_list_package;
+
+
+ /* Assign appropriate element value to corresponding field*/
+ switch (eloc) {
+ case VALUE:
+ strscpy(bioscfg_drv.ordered_list_data[instance_id].current_value,
+ str_value, sizeof(bioscfg_drv.ordered_list_data[instance_id].current_value));
+ break;
+ case PATH:
+ strscpy(bioscfg_drv.ordered_list_data[instance_id].path, str_value,
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].path));
+ break;
+ case IS_READONLY:
+ bioscfg_drv.ordered_list_data[instance_id].is_readonly = int_value;
+ break;
+ case DISPLAY_IN_UI:
+ bioscfg_drv.ordered_list_data[instance_id].display_in_ui = int_value;
+ break;
+ case REQUIRES_PHYSICAL_PRESENCE:
+ bioscfg_drv.ordered_list_data[instance_id].requires_physical_presence = int_value;
+ break;
+ case SEQUENCE:
+ bioscfg_drv.ordered_list_data[instance_id].sequence = int_value;
+ break;
+ case PREREQUISITE_SIZE:
+ bioscfg_drv.ordered_list_data[instance_id].prerequisitesize = int_value;
+ if (int_value > 20)
+ pr_warn("Prerequisites size value exceeded the maximum number of elements supported or data may be malformed\n");
+ /*
+ * prerequisites element is omitted when
+ * prerequisitesSize value is zero.
+ */
+ if (int_value == 0)
+ eloc++;
+ break;
+ case PREREQUISITES:
+ size = bioscfg_drv.ordered_list_data[instance_id].prerequisitesize;
+ for (reqs = 0; reqs < size; reqs++) {
+ status = convert_hexstr_to_str(&order_obj[elem].string.pointer,
+ order_obj[elem].string.length,
+ &str_value, &value_len);
+
+ if (ACPI_FAILURE(status))
+ continue;
+
+ strlcat(bioscfg_drv.ordered_list_data[instance_id].prerequisites,
+ str_value,
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].prerequisites));
+
+ if (reqs != (size - 1))
+ strlcat(bioscfg_drv.ordered_list_data[instance_id].prerequisites, ";",
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].prerequisites));
+
+ kfree(str_value);
+ str_value = NULL;
+ }
+ break;
+
+ case SECURITY_LEVEL:
+ bioscfg_drv.ordered_list_data[instance_id].security_level = int_value;
+ break;
+
+ case ORD_LIST_SIZE:
+ bioscfg_drv.ordered_list_data[instance_id].size = int_value;
+ break;
+ case ORD_LIST_ELEMENTS:
+ size = bioscfg_drv.ordered_list_data[instance_id].size;
+
+ /*
+ * Ordered list data is stored in hex and comma separated format
+ * Convert the data and split it to show each element
+ */
+ status = convert_hexstr_to_str(&str_value, value_len, &tmpstr, &tmp_len);
+ if (ACPI_FAILURE(status))
+ goto exit_ordered_list_package;
+
+ part_tmp = tmpstr;
+ part = strsep(&part_tmp, ",");
+ if (!part)
+ strscpy(bioscfg_drv.ordered_list_data[instance_id].elements,
+ tmpstr, sizeof(bioscfg_drv.ordered_list_data[instance_id].elements));
+
+ while (part) {
+ strlcat(bioscfg_drv.ordered_list_data[instance_id].elements,
+ part, sizeof(bioscfg_drv.ordered_list_data[instance_id].elements));
+
+ part = strsep(&part_tmp, ",");
+ if (part)
+ strlcat(bioscfg_drv.ordered_list_data[instance_id].elements, ";",
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].elements));
+ }
+ break;
+ default:
+ pr_warn("Invalid element: %d found in Ordered_List attribute or data may be malformed\n", elem);
+ break;
+ }
+ kfree(tmpstr);
+ tmpstr = NULL;
+ kfree(str_value);
+ str_value = NULL;
+ }
+
+exit_ordered_list_package:
+ kfree(tmpstr);
+ tmpstr = NULL;
+ kfree(str_value);
+ str_value = NULL;
+ return 0;
+}
+
+/*
+ * populate_ordered_list_data() - Populate all properties of an
+ * instance under ordered list attribute
+ *
+ * @order_obj: ACPI object with enumeration data
+ * @instance_id: The instance to enumerate
+ * @attr_name_kobj: The parent kernel object
+ * @enum_property_count: Total properties count under ordered list type
+ */
+int populate_ordered_list_buffer_data(union acpi_object *order_obj, int instance_id,
+ struct kobject *attr_name_kobj)
+{
+
+ bioscfg_drv.ordered_list_data[instance_id].type = HPWMI_ORDERED_LIST_TYPE;
+ bioscfg_drv.ordered_list_data[instance_id].attr_name_kobj = attr_name_kobj;
+
+ strscpy(bioscfg_drv.ordered_list_data[instance_id].attribute_name,
+ attr_name_kobj->name,
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].attribute_name));
+ strscpy(bioscfg_drv.ordered_list_data[instance_id].display_name,
+ attr_name_kobj->name,
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].display_name));
+
+ /* Populate ordered list elements */
+ populate_ordered_list_elements_from_buffer(order_obj, instance_id, HPWMI_ORDERED_LIST_TYPE);
+ update_attribute_permissions(bioscfg_drv.ordered_list_data[instance_id].is_readonly,
+ &ordered_list_current_val);
+ friendly_user_name_update(bioscfg_drv.ordered_list_data[instance_id].path,
+ attr_name_kobj->name,
+ bioscfg_drv.ordered_list_data[instance_id].display_name,
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].display_name));
+
+ return sysfs_create_group(attr_name_kobj, &ordered_list_attr_group);
+}
+
+int populate_ordered_list_elements_from_buffer(union acpi_object *order_obj,
+ int instance_id, enum hp_wmi_data_type type)
+{
+ int status;
+ char *str = NULL;
+ int elem;
+ int reqs;
+ int integer;
+ int size = 0;
+ int values;
+
+ elem = 0;
+ strscpy(bioscfg_drv.ordered_list_data[instance_id].display_name_language_code,
+ LANG_CODE_STR,
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].display_name_language_code));
+
+ for (elem = 1; elem < 3; elem++) {
+
+ status = get_string_from_buffer((u16 **)&order_obj->buffer.pointer, &str);
+ if (ACPI_FAILURE(status))
+ continue;
+
+ switch (elem) {
+ case VALUE:
+ strscpy(bioscfg_drv.ordered_list_data[instance_id].current_value,
+ str, sizeof(bioscfg_drv.ordered_list_data[instance_id].current_value));
+ break;
+ case PATH:
+ strscpy(bioscfg_drv.ordered_list_data[instance_id].path, str,
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].path));
+ break;
+ default:
+ pr_warn("Invalid element: %d found in Ordered list attribute or data may be malformed\n", elem);
+ break;
+ }
+ kfree(str);
+ str = NULL;
+ }
+ for (elem = 3; elem < hp_wmi_elements_count[type]; elem++) {
+
+ if (elem != PREREQUISITES && elem != ORD_LIST_ELEMENTS)
+ status = get_integer_from_buffer((int **)&order_obj->buffer.pointer, (int *)&integer);
+
+ if (ACPI_FAILURE(status))
+ continue;
+
+ switch (elem) {
+
+ case IS_READONLY:
+ bioscfg_drv.ordered_list_data[instance_id].is_readonly = integer;
+ break;
+ case DISPLAY_IN_UI:
+ bioscfg_drv.ordered_list_data[instance_id].display_in_ui = integer;
+ break;
+ case REQUIRES_PHYSICAL_PRESENCE:
+ bioscfg_drv.ordered_list_data[instance_id].requires_physical_presence = integer;
+ break;
+ case SEQUENCE:
+ bioscfg_drv.ordered_list_data[instance_id].sequence = integer;
+ break;
+ case PREREQUISITE_SIZE:
+ bioscfg_drv.ordered_list_data[instance_id].prerequisitesize = integer;
+ if (integer > 20)
+ pr_warn("Prerequisites size value exceeded the maximum number of elements supported or data may be malformed\n");
+ break;
+ case PREREQUISITES:
+ size = bioscfg_drv.ordered_list_data[instance_id].prerequisitesize;
+ for (reqs = 0; reqs < size; reqs++) {
+ status = get_string_from_buffer((u16 **)&order_obj->buffer.pointer, &str);
+ if (ACPI_FAILURE(status))
+ continue;
+
+ strlcat(bioscfg_drv.ordered_list_data[instance_id].prerequisites,
+ str,
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].prerequisites));
+
+ if (reqs != (size - 1))
+ strlcat(bioscfg_drv.ordered_list_data[instance_id].prerequisites, ";",
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].prerequisites));
+
+ kfree(str);
+ str = NULL;
+ }
+ break;
+ case SECURITY_LEVEL:
+ bioscfg_drv.ordered_list_data[instance_id].security_level = integer;
+ break;
+ case ORD_LIST_SIZE:
+ bioscfg_drv.ordered_list_data[instance_id].size = integer;
+ break;
+ case ORD_LIST_ELEMENTS:
+ size = bioscfg_drv.ordered_list_data[instance_id].size;
+ for (values = 0; values < size; values++) {
+ status = get_string_from_buffer((u16 **)&order_obj->buffer.pointer, &str);
+ if (ACPI_FAILURE(status))
+ continue;
+
+ strlcat(bioscfg_drv.ordered_list_data[instance_id].elements,
+ str,
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].elements));
+
+ if (values != (size - 1))
+ strlcat(bioscfg_drv.ordered_list_data[instance_id].elements, ";",
+ sizeof(bioscfg_drv.ordered_list_data[instance_id].elements));
+
+ kfree(str);
+ str = NULL;
+ }
+ break;
+ default:
+ pr_warn("Invalid element: %d found in Ordered list attribute or data may be malformed\n", elem);
+ break;
+ }
+ kfree(str);
+ str = NULL;
+ }
+ kfree(str);
+ str = NULL;
+
+ return 0;
+}
+
+
+/*
+ * exit_ordered_list_attributes() - Clear all attribute data
+ *
+ * Clears all data allocated for this group of attributes
+ */
+void exit_ordered_list_attributes(void)
+{
+ int instance_id;
+
+ for (instance_id = 0; instance_id < bioscfg_drv.ordered_list_instances_count; instance_id++) {
+ if (bioscfg_drv.ordered_list_data[instance_id].attr_name_kobj)
+ sysfs_remove_group(bioscfg_drv.ordered_list_data[instance_id].attr_name_kobj,
+ &ordered_list_attr_group);
+ }
+ bioscfg_drv.ordered_list_instances_count = 0;
+
+ kfree(bioscfg_drv.ordered_list_data);
+ bioscfg_drv.ordered_list_data = NULL;
+}
diff --git a/drivers/platform/x86/hp/hp-bioscfg/passwdattr-interface.c b/drivers/platform/x86/hp/hp-bioscfg/passwdattr-interface.c
new file mode 100644
index 000000000000..ecba2994563c
--- /dev/null
+++ b/drivers/platform/x86/hp/hp-bioscfg/passwdattr-interface.c
@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Functions corresponding to SET password methods under
+ * HP_WMI_SET_BIOS_SETTING_GUID for use with hp-bioscfg driver.
+ *
+ * Copyright (c) 2022 Hewlett-Packard Inc.
+ */
+
+#include <linux/wmi.h>
+#include "bioscfg.h"
+
+static int bios_attr_pass_interface_probe(struct wmi_device *wdev, const void *context)
+{
+ mutex_lock(&bioscfg_drv.mutex);
+ bioscfg_drv.password_attr_wdev = wdev;
+ mutex_unlock(&bioscfg_drv.mutex);
+ return 0;
+}
+
+static void bios_attr_pass_interface_remove(struct wmi_device *wdev)
+{
+ mutex_lock(&bioscfg_drv.mutex);
+ bioscfg_drv.password_attr_wdev = NULL;
+ mutex_unlock(&bioscfg_drv.mutex);
+}
+
+static const struct wmi_device_id bios_attr_pass_interface_id_table[] = {
+ { .guid_string = HP_WMI_SET_BIOS_SETTING_GUID },
+ { },
+};
+static struct wmi_driver bios_attr_pass_interface_driver = {
+ .driver = {
+ .name = DRIVER_NAME"-password"
+ },
+ .probe = bios_attr_pass_interface_probe,
+ .remove = bios_attr_pass_interface_remove,
+ .id_table = bios_attr_pass_interface_id_table,
+};
+
+int init_bios_attr_pass_interface(void)
+{
+ return wmi_driver_register(&bios_attr_pass_interface_driver);
+}
+
+void exit_bios_attr_pass_interface(void)
+{
+ wmi_driver_unregister(&bios_attr_pass_interface_driver);
+}
+
+MODULE_DEVICE_TABLE(wmi, bios_attr_pass_interface_id_table);
--
2.34.1
