osi.h File Reference

#include <uacpi/osi.h>

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Functions
uacpi_status	uacpi_initialize_interfaces (void)
void	uacpi_deinitialize_interfaces (void)
uacpi_status	uacpi_handle_osi (const uacpi_char *string, uacpi_bool *out_value)

Function Documentation

uacpi_deinitialize_interfaces()

void uacpi_deinitialize_interfaces

(

void

)

Definition at line 106 of file osi.c.

{
    struct registered_interface *iface, *next_iface = registered_interfaces;
 
    while (next_iface) {
        iface = next_iface;
        next_iface = iface->next;
 
        iface->next = UACPI_NULL;
 
        if (iface->dynamic) {
            uacpi_free_dynamic_string(iface->name);
            uacpi_free(iface, sizeof(*iface));
            continue;
        }
 
        // Only features are disabled by default
        iface->disabled = iface->kind == UACPI_INTERFACE_KIND_FEATURE ?
                UACPI_TRUE : UACPI_FALSE;
    }
 
    if (interface_mutex)
        uacpi_kernel_free_mutex(interface_mutex);
 
    interface_mutex = UACPI_NULL;
    interface_handler = UACPI_NULL;
    latest_queried_interface = 0;
    registered_interfaces = UACPI_NULL;
}

Referenced by uacpi_state_reset().

uacpi_handle_osi()

uacpi_status uacpi_handle_osi	(	const uacpi_char *	string,
		uacpi_bool *	out_value
	)

Definition at line 362 of file osi.c.

{
    uacpi_status ret;
    struct registered_interface *interface;
    uacpi_bool is_supported = UACPI_FALSE;
 
    ret = uacpi_acquire_native_mutex(interface_mutex);
    if (uacpi_unlikely_error(ret))
        return ret;
 
    interface = find_interface_unlocked(string);
    if (interface == UACPI_NULL)
        goto out;
 
    if (interface->weight > latest_queried_interface)
        uacpi_atomic_store32(&latest_queried_interface, interface->weight);
 
    is_supported = !interface->disabled;
    if (interface_handler)
        is_supported = interface_handler(string, is_supported);
out:
    uacpi_release_native_mutex(interface_mutex);
    *out_value = is_supported;
    return UACPI_STATUS_OK;
}

Referenced by uacpi_osi().

uacpi_initialize_interfaces()

uacpi_status uacpi_initialize_interfaces

(

void

)

Definition at line 90 of file osi.c.

{
    uacpi_size i;
 
    registered_interfaces = &predefined_interfaces[0];
 
    interface_mutex = uacpi_kernel_create_mutex();
    if (uacpi_unlikely(interface_mutex == UACPI_NULL))
        return UACPI_STATUS_OUT_OF_MEMORY;
 
    for (i = 0; i < (UACPI_ARRAY_SIZE(predefined_interfaces) - 1); ++i)
        predefined_interfaces[i].next = &predefined_interfaces[i + 1];
 
    return UACPI_STATUS_OK;
}

Referenced by uacpi_initialize().