Changes in uspace/drv/usbhub/usbhub.c [ad4562c2:5097bed4] in mainline

File:

• uspace/drv/usbhub/usbhub.c (modified) (10 diffs)

uspace/drv/usbhub/usbhub.c

@@ -26 +26 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-/** @addtogroup drvusbhub
+/** @addtogroup usb hub driver
  * @{
  */
@@ -33 +33 @@
  */
 
-#include <ddf/driver.h>
+#include <driver.h>
 #include <bool.h>
 #include <errno.h>
-#include <str_error.h>
 
 #include <usb_iface.h>
-#include <usb/ddfiface.h>
+#include <usb/usbdrv.h>
 #include <usb/descriptor.h>
-#include <usb/recognise.h>
-#include <usb/request.h>
+#include <usb/devreq.h>
 #include <usb/classes/hub.h>
-#include <stdio.h>
 
 #include "usbhub.h"
 #include "usbhub_private.h"
 #include "port_status.h"
-#include "usb/usb.h"
-#include "usb/pipes.h"
-#include "usb/classes/classes.h"
-
-static ddf_dev_ops_t hub_device_ops = {
-        .interfaces[USB_DEV_IFACE] = &usb_iface_hub_impl
+
+static usb_iface_t hub_usb_iface = {
+        .get_hc_handle = usb_drv_find_hc
 };
 
-/** Hub status-change endpoint description
- *
- * For more see usb hub specification in 11.15.1 of
- */
-static usb_endpoint_description_t status_change_endpoint_description = {
-        .transfer_type = USB_TRANSFER_INTERRUPT,
-        .direction = USB_DIRECTION_IN,
-        .interface_class = USB_CLASS_HUB,
-        .interface_subclass = 0,
-        .interface_protocol = 0,
-        .flags = 0
+static device_ops_t hub_device_ops = {
+        .interfaces[USB_DEV_IFACE] = &hub_usb_iface
 };
-
-int usb_hub_control_loop(void * hub_info_param){
-        usb_hub_info_t * hub_info = (usb_hub_info_t*)hub_info_param;
-        while(true){
-                usb_hub_check_hub_changes(hub_info);
-                async_usleep(1000 * 1000 );/// \TODO proper number once
-        }
-        return 0;
-}
-
 
 //*********************************************
@@ -86 +61 @@
 //*********************************************
 
-/**
- * Initialize connnections to host controller, device, and device
- * control endpoint
- * @param hub
- * @param device
- * @return
- */
-static int usb_hub_init_communication(usb_hub_info_t * hub){
-        usb_log_debug("Initializing hub USB communication (hub->device->handle=%zu).\n", hub->device->handle);
-        int opResult;
-        opResult = usb_device_connection_initialize_from_device(
-                        &hub->device_connection,
-                        hub->device);
-        if(opResult != EOK){
-                dprintf(USB_LOG_LEVEL_ERROR,
-                                "could not initialize connection to hc, errno %d",opResult);
-                return opResult;
-        }
-        usb_log_debug("Initializing USB wire abstraction.\n");
-        opResult = usb_hc_connection_initialize_from_device(&hub->connection,
-                        hub->device);
-        if(opResult != EOK){
-                dprintf(USB_LOG_LEVEL_ERROR,
-                                "could not initialize connection to device, errno %d",opResult);
-                return opResult;
-        }
-        usb_log_debug("Initializing default control pipe.\n");
-        opResult = usb_endpoint_pipe_initialize_default_control(&hub->endpoints.control,
-            &hub->device_connection);
-        if(opResult != EOK){
-                dprintf(USB_LOG_LEVEL_ERROR,
-                                "could not initialize connection to device endpoint, errno %d",opResult);
-        }
-        return opResult;
-}
-
-/**
- * When entering this function, hub->endpoints.control should be active.
- * @param hub
- * @return
- */
-static int usb_hub_process_configuration_descriptors(
-        usb_hub_info_t * hub){
-        if(hub==NULL) {
-                return EINVAL;
-        }
-        int opResult;
-        
-        //device descriptor
-        usb_standard_device_descriptor_t std_descriptor;
-        opResult = usb_request_get_device_descriptor(&hub->endpoints.control,
-            &std_descriptor);
-        if(opResult!=EOK){
-                dprintf(USB_LOG_LEVEL_ERROR, "could not get device descriptor, %d",opResult);
-                return opResult;
-        }
-        dprintf(USB_LOG_LEVEL_INFO, "hub has %d configurations",
-                        std_descriptor.configuration_count);
-        if(std_descriptor.configuration_count<1){
-                dprintf(USB_LOG_LEVEL_ERROR, "THERE ARE NO CONFIGURATIONS AVAILABLE");
-                //shouldn`t I return?
-        }
-
-        //configuration descriptor
-        /// \TODO check other configurations?
-        usb_standard_configuration_descriptor_t config_descriptor;
-        opResult = usb_request_get_bare_configuration_descriptor(
-            &hub->endpoints.control, 0,
-        &config_descriptor);
-        if(opResult!=EOK){
-                dprintf(USB_LOG_LEVEL_ERROR, "could not get configuration descriptor, %d",opResult);
-                return opResult;
-        }
-        //set configuration
-        opResult = usb_request_set_configuration(&hub->endpoints.control,
-                config_descriptor.configuration_number);
-
-        if (opResult != EOK) {
-                dprintf(USB_LOG_LEVEL_ERROR,
-                                "something went wrong when setting hub`s configuration, %d",
-                                opResult);
-                return opResult;
-        }
-        dprintf(USB_LOG_LEVEL_DEBUG, "\tused configuration %d",
-                        config_descriptor.configuration_number);
-
-        //full configuration descriptor
-        size_t transferred = 0;
-        uint8_t * descriptors = (uint8_t *)malloc(config_descriptor.total_length);
-        if (descriptors == NULL) {
-                dprintf(USB_LOG_LEVEL_ERROR, "insufficient memory");
-                return ENOMEM;
-        }
-        opResult = usb_request_get_full_configuration_descriptor(&hub->endpoints.control,
-            0, descriptors,
-            config_descriptor.total_length, &transferred);
-        if(opResult!=EOK){
-                free(descriptors);
-                dprintf(USB_LOG_LEVEL_ERROR,
-                                "could not get full configuration descriptor, %d",opResult);
-                return opResult;
-        }
-        if (transferred != config_descriptor.total_length) {
-                dprintf(USB_LOG_LEVEL_ERROR,
-                                "received incorrect full configuration descriptor");
-                return ELIMIT;
-        }
-
-        usb_endpoint_mapping_t endpoint_mapping[1] = {
-                {
-                        .pipe = &hub->endpoints.status_change,
-                        .description = &status_change_endpoint_description,
-                        .interface_no =
-                            usb_device_get_assigned_interface(hub->device)
-                }
-        };
-        opResult = usb_endpoint_pipe_initialize_from_configuration(
-            endpoint_mapping, 1,
-            descriptors, config_descriptor.total_length,
-            &hub->device_connection);
-        if (opResult != EOK) {
-                dprintf(USB_LOG_LEVEL_ERROR,
-                                "Failed to initialize status change pipe: %s",
-                    str_error(opResult));
-                return opResult;
-        }
-        if (!endpoint_mapping[0].present) {
-                dprintf(USB_LOG_LEVEL_ERROR,"Not accepting device, " \
-                    "cannot understand what is happenning");
-                return EREFUSED;
-        }
-
-        free(descriptors);
-        return EOK;
-        
-}
-
-
-/**
- * Create hub representation from device information.
- * @param device
- * @return pointer to created structure or NULL in case of error
- */
-usb_hub_info_t * usb_create_hub_info(ddf_dev_t * device) {
+usb_hub_info_t * usb_create_hub_info(device_t * device, int hc) {
         usb_hub_info_t* result = usb_new(usb_hub_info_t);
-        result->device = device;
-        int opResult;
-        opResult = usb_hub_init_communication(result);
-        if(opResult != EOK){
-                free(result);
-                return NULL;
-        }
-
         //result->device = device;
         result->port_count = -1;
+        /// \TODO is this correct? is the device stored?
         result->device = device;
 
-        //result->usb_device = usb_new(usb_hcd_attached_device_info_t);
-        size_t received_size;
+
+        //printf("[usb_hub] phone to hc = %d\n", hc);
+        if (hc < 0) {
+                return result;
+        }
+        //get some hub info
+        usb_address_t addr = usb_drv_get_my_address(hc, device);
+        dprintf(1,"[usb_hub] address of newly created hub = %d", addr);
+        /*if(addr<0){
+                //return result;
+
+        }*/
+
+        result->usb_device = usb_new(usb_hcd_attached_device_info_t);
+        result->usb_device->address = addr;
 
         // get hub descriptor
-        dprintf(USB_LOG_LEVEL_DEBUG, "creating serialized descripton");
+        usb_target_t target;
+        target.address = addr;
+        target.endpoint = 0;
+        usb_device_request_setup_packet_t request;
+        //printf("[usb_hub] creating descriptor request\n");
+        usb_hub_set_descriptor_request(&request);
+
+        //printf("[usb_hub] creating serialized descriptor\n");
         void * serialized_descriptor = malloc(USB_HUB_MAX_DESCRIPTOR_SIZE);
         usb_hub_descriptor_t * descriptor;
-        dprintf(USB_LOG_LEVEL_DEBUG, "starting control transaction");
-        usb_endpoint_pipe_start_session(&result->endpoints.control);
-        opResult = usb_request_get_descriptor(&result->endpoints.control,
-                        USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_DEVICE,
-                        USB_DESCTYPE_HUB,
-                        0, 0, serialized_descriptor,
+        size_t received_size;
+        int opResult;
+        //printf("[usb_hub] starting control transaction\n");
+        opResult = usb_drv_sync_control_read(
+                        hc, target, &request, serialized_descriptor,
                         USB_HUB_MAX_DESCRIPTOR_SIZE, &received_size);
-        usb_endpoint_pipe_end_session(&result->endpoints.control);
-
-        if (opResult != EOK) {
-                dprintf(USB_LOG_LEVEL_ERROR, "failed when receiving hub descriptor, badcode = %d",opResult);
+        if (opResult != EOK) {
+                dprintf(1,"[usb_hub] failed when receiving hub descriptor, badcode = %d",opResult);
                 free(serialized_descriptor);
                 return result;
         }
-        dprintf(USB_LOG_LEVEL_DEBUG2, "deserializing descriptor");
+        //printf("[usb_hub] deserializing descriptor\n");
         descriptor = usb_deserialize_hub_desriptor(serialized_descriptor);
         if(descriptor==NULL){
-                dprintf(USB_LOG_LEVEL_WARNING, "could not deserialize descriptor ");
+                dprintf(1,"[usb_hub] could not deserialize descriptor ");
                 result->port_count = 1;///\TODO this code is only for debug!!!
                 return result;
         }
-
-        dprintf(USB_LOG_LEVEL_INFO, "setting port count to %d",descriptor->ports_count);
+        //printf("[usb_hub] setting port count to %d\n",descriptor->ports_count);
         result->port_count = descriptor->ports_count;
-        result->attached_devs = (usb_hc_attached_device_t*)
-            malloc((result->port_count+1) * sizeof(usb_hc_attached_device_t));
+        result->attached_devs = (usb_hub_attached_device_t*)
+            malloc((result->port_count+1) * sizeof(usb_hub_attached_device_t));
         int i;
         for(i=0;i<result->port_count+1;++i){
-                result->attached_devs[i].handle=0;
+                result->attached_devs[i].devman_handle=0;
                 result->attached_devs[i].address=0;
         }
-        dprintf(USB_LOG_LEVEL_DEBUG2, "freeing data");
+        //printf("[usb_hub] freeing data\n");
         free(serialized_descriptor);
         free(descriptor->devices_removable);
@@ -288 +129 @@
         //finish
 
-        dprintf(USB_LOG_LEVEL_INFO, "hub info created");
+        dprintf(1,"[usb_hub] hub info created");
 
         return result;
 }
 
-/**
- * Create hub representation and add it into hub list
- * @param dev
- * @return
- */
-int usb_add_hub_device(ddf_dev_t *dev) {
-        dprintf(USB_LOG_LEVEL_INFO, "add_hub_device(handle=%d)", (int) dev->handle);
-
-        //dev->ops = &hub_device_ops;
-        (void) hub_device_ops;
-
-        usb_hub_info_t * hub_info = usb_create_hub_info(dev);
-
-        int opResult;
-
-        //perform final configurations
-        usb_endpoint_pipe_start_session(&hub_info->endpoints.control);
-        // process descriptors
-        opResult = usb_hub_process_configuration_descriptors(hub_info);
-        if(opResult != EOK){
-                dprintf(USB_LOG_LEVEL_ERROR,"could not get condiguration descriptors, %d",
-                                opResult);
+int usb_add_hub_device(device_t *dev) {
+        dprintf(1, "add_hub_device(handle=%d)", (int) dev->handle);
+        dprintf(1,"[usb_hub] hub device");
+
+        /*
+         * We are some (probably deeply nested) hub.
+         * Thus, assign our own operations and explore already
+         * connected devices.
+         */
+        dev->ops = &hub_device_ops;
+
+        //create the hub structure
+        //get hc connection
+        int hc = usb_drv_hc_connect_auto(dev, 0);
+        if (hc < 0) {
+                return hc;
+        }
+
+        usb_hub_info_t * hub_info = usb_create_hub_info(dev, hc);
+        int port;
+        int opResult;
+        usb_device_request_setup_packet_t request;
+        usb_target_t target;
+        target.address = hub_info->usb_device->address;
+        target.endpoint = 0;
+
+        //get configuration descriptor
+        // this is not fully correct - there are more configurations
+        // and all should be checked
+        usb_standard_device_descriptor_t std_descriptor;
+        opResult = usb_drv_req_get_device_descriptor(hc, target.address,
+    &std_descriptor);
+        if(opResult!=EOK){
+                dprintf(1,"[usb_hub] could not get device descriptor, %d",opResult);
                 return opResult;
         }
-        //power ports
-        usb_device_request_setup_packet_t request;
-        int port;
+        dprintf(1,"[usb_hub] hub has %d configurations",std_descriptor.configuration_count);
+        if(std_descriptor.configuration_count<1){
+                dprintf(1,"[usb_hub] THERE ARE NO CONFIGURATIONS AVAILABLE");
+        }
+        /// \TODO check other configurations
+        usb_standard_configuration_descriptor_t config_descriptor;
+        opResult = usb_drv_req_get_bare_configuration_descriptor(hc,
+        target.address, 0,
+        &config_descriptor);
+        if(opResult!=EOK){
+                dprintf(1,"[usb_hub] could not get configuration descriptor, %d",opResult);
+                return opResult;
+        }
+        //set configuration
+        request.request_type = 0;
+        request.request = USB_DEVREQ_SET_CONFIGURATION;
+        request.index=0;
+        request.length=0;
+        request.value_high=0;
+        request.value_low = config_descriptor.configuration_number;
+        opResult = usb_drv_sync_control_write(hc, target, &request, NULL, 0);
+        if (opResult != EOK) {
+                dprintf(1,"[usb_hub]something went wrong when setting hub`s configuration, %d", opResult);
+        }
+
         for (port = 1; port < hub_info->port_count+1; ++port) {
                 usb_hub_set_power_port_request(&request, port);
-                opResult = usb_endpoint_pipe_control_write(&hub_info->endpoints.control,
-                                &request,sizeof(usb_device_request_setup_packet_t), NULL, 0);
-                dprintf(USB_LOG_LEVEL_INFO, "powering port %d",port);
+                opResult = usb_drv_sync_control_write(hc, target, &request, NULL, 0);
+                dprintf(1,"[usb_hub] powering port %d",port);
                 if (opResult != EOK) {
-                        dprintf(USB_LOG_LEVEL_WARNING, "something went wrong when setting hub`s %dth port", port);
+                        dprintf(1,"[usb_hub]something went wrong when setting hub`s %dth port", port);
                 }
         }
         //ports powered, hub seems to be enabled
-        usb_endpoint_pipe_end_session(&hub_info->endpoints.control);
+
+        ipc_hangup(hc);
 
         //add the hub to list
-        //is this needed now?
-        fibril_mutex_lock(&usb_hub_list_lock);
+        futex_down(&usb_hub_list_lock);
         usb_lst_append(&usb_hub_list, hub_info);
-        fibril_mutex_unlock(&usb_hub_list_lock);
-        dprintf(USB_LOG_LEVEL_DEBUG, "hub info added to list");
-
-        dprintf(USB_LOG_LEVEL_DEBUG, "adding to ddf");
-        ddf_fun_t *hub_fun = ddf_fun_create(dev, fun_exposed, "hub");
-        assert(hub_fun != NULL);
-        hub_fun->ops = NULL;
-
-        int rc = ddf_fun_bind(hub_fun);
-        assert(rc == EOK);
-        rc = ddf_fun_add_to_class(hub_fun, "hub");
-        assert(rc == EOK);
-
-        fid_t fid = fibril_create(usb_hub_control_loop, hub_info);
-        if (fid == 0) {
-                dprintf(USB_LOG_LEVEL_ERROR, 
-                                ": failed to start monitoring fibril for new hub");
-                return ENOMEM;
-        }
-        fibril_add_ready(fid);
-
-        dprintf(USB_LOG_LEVEL_DEBUG, "hub fibril created");
+        futex_up(&usb_hub_list_lock);
+
+        dprintf(1,"[usb_hub] hub info added to list");
         //(void)hub_info;
-        //usb_hub_check_hub_changes();
+        usb_hub_check_hub_changes();
+
         
-        dprintf(USB_LOG_LEVEL_INFO, "hub dev added");
-        //address is lost...
-        dprintf(USB_LOG_LEVEL_DEBUG, "\taddress %d, has %d ports ",
-                        //hub_info->endpoints.control.,
+
+        dprintf(1,"[usb_hub] hub dev added");
+        dprintf(1,"\taddress %d, has %d ports ",
+                        hub_info->usb_device->address,
                         hub_info->port_count);
+        dprintf(1,"\tused configuration %d",config_descriptor.configuration_number);
 
         return EOK;
         //return ENOTSUP;
 }
+
 
 
@@ -379 +237 @@
 
 /**
- * Reset the port with new device and reserve the default address.
+ * convenience function for releasing default address and writing debug info
+ * (these few lines are used too often to be written again and again)
+ * @param hc
+ * @return
+ */
+inline static int usb_hub_release_default_address(int hc){
+        int opResult;
+        dprintf(1,"[usb_hub] releasing default address");
+        opResult = usb_drv_release_default_address(hc);
+        if (opResult != EOK) {
+                dprintf(1,"[usb_hub] failed to release default address");
+        }
+        return opResult;
+}
+
+/**
+ * reset the port with new device and reserve the default address
  * @param hc
  * @param port
  * @param target
  */
-static void usb_hub_init_add_device(usb_hub_info_t * hub, uint16_t port) {
+static void usb_hub_init_add_device(int hc, uint16_t port, usb_target_t target) {
         usb_device_request_setup_packet_t request;
         int opResult;
-        dprintf(USB_LOG_LEVEL_INFO, "some connection changed");
-        assert(hub->endpoints.control.hc_phone);
+        dprintf(1,"[usb_hub] some connection changed");
         //get default address
-        //opResult = usb_drv_reserve_default_address(hc);
-        opResult = usb_hc_reserve_default_address(&hub->connection, USB_SPEED_LOW);
-        
-        if (opResult != EOK) {
-                dprintf(USB_LOG_LEVEL_WARNING, 
-                                "cannot assign default address, it is probably used %d",opResult);
+        opResult = usb_drv_reserve_default_address(hc);
+        if (opResult != EOK) {
+                dprintf(1,"[usb_hub] cannot assign default address, it is probably used");
                 return;
         }
         //reset port
         usb_hub_set_reset_port_request(&request, port);
-        opResult = usb_endpoint_pipe_control_write(
-                        &hub->endpoints.control,
-                        &request,sizeof(usb_device_request_setup_packet_t),
+        opResult = usb_drv_sync_control_write(
+                        hc, target,
+                        &request,
                         NULL, 0
                         );
         if (opResult != EOK) {
-                dprintf(USB_LOG_LEVEL_ERROR, 
-                                "something went wrong when reseting a port %d",opResult);
-                //usb_hub_release_default_address(hc);
-                usb_hc_release_default_address(&hub->connection);
+                dprintf(1,"[usb_hub] something went wrong when reseting a port");
+                usb_hub_release_default_address(hc);
         }
 }
 
 /**
- * Finalize adding new device after port reset
+ * finalize adding new device after port reset
  * @param hc
  * @param port
@@ -420 +288 @@
  */
 static void usb_hub_finalize_add_device( usb_hub_info_t * hub,
-                uint16_t port, bool isLowSpeed) {
-
-        int opResult;
-        dprintf(USB_LOG_LEVEL_INFO, "finalizing add device");
-        opResult = usb_hub_clear_port_feature(&hub->endpoints.control,
+                int hc, uint16_t port, usb_target_t target) {
+
+        int opResult;
+        dprintf(1,"[usb_hub] finalizing add device");
+        opResult = usb_hub_clear_port_feature(hc, target.address,
             port, USB_HUB_FEATURE_C_PORT_RESET);
-
-        if (opResult != EOK) {
-                dprintf(USB_LOG_LEVEL_ERROR, "failed to clear port reset feature");
-                usb_hc_release_default_address(&hub->connection);
-                return;
-        }
-        //create connection to device
-        usb_endpoint_pipe_t new_device_pipe;
-        usb_device_connection_t new_device_connection;
-        usb_device_connection_initialize_on_default_address(
-                        &new_device_connection,
-                        &hub->connection
-                        );
-        usb_endpoint_pipe_initialize_default_control(
-                        &new_device_pipe,
-                        &new_device_connection);
-        /// \TODO get highspeed info
-        usb_speed_t speed = isLowSpeed?USB_SPEED_LOW:USB_SPEED_FULL;
-
-
-        /* Request address from host controller. */
-        usb_address_t new_device_address = usb_hc_request_address(
-                        &hub->connection,
-                        speed/// \TODO fullspeed??
-                        );
+        if (opResult != EOK) {
+                dprintf(1,"[usb_hub] failed to clear port reset feature");
+                usb_hub_release_default_address(hc);
+                return;
+        }
+
+        /* Request address at from host controller. */
+        usb_address_t new_device_address = usb_drv_request_address(hc);
         if (new_device_address < 0) {
-                dprintf(USB_LOG_LEVEL_ERROR, "failed to get free USB address");
+                dprintf(1,"[usb_hub] failed to get free USB address");
                 opResult = new_device_address;
-                usb_hc_release_default_address(&hub->connection);
-                return;
-        }
-        dprintf(USB_LOG_LEVEL_INFO, "setting new address %d",new_device_address);
-        //opResult = usb_drv_req_set_address(hc, USB_ADDRESS_DEFAULT,
-        //    new_device_address);
-        usb_endpoint_pipe_start_session(&new_device_pipe);
-        opResult = usb_request_set_address(&new_device_pipe,new_device_address);
-        usb_endpoint_pipe_end_session(&new_device_pipe);
-        if (opResult != EOK) {
-                dprintf(USB_LOG_LEVEL_ERROR, 
-                                "could not set address for new device %d",opResult);
-                usb_hc_release_default_address(&hub->connection);
-                return;
-        }
-
-
-        //opResult = usb_hub_release_default_address(hc);
-        opResult = usb_hc_release_default_address(&hub->connection);
+                usb_hub_release_default_address(hc);
+                return;
+        }
+        dprintf(1,"[usb_hub] setting new address");
+        opResult = usb_drv_req_set_address(hc, USB_ADDRESS_DEFAULT,
+            new_device_address);
+
+        if (opResult != EOK) {
+                dprintf(1,"[usb_hub] could not set address for new device");
+                usb_hub_release_default_address(hc);
+                return;
+        }
+
+
+        opResult = usb_hub_release_default_address(hc);
         if(opResult!=EOK){
                 return;
@@ -478 +325 @@
 
         devman_handle_t child_handle;
-        //??
-    opResult = usb_device_register_child_in_devman(new_device_address,
-            hub->connection.hc_handle, hub->device, &child_handle,
-            NULL, NULL, NULL);
-
-        if (opResult != EOK) {
-                dprintf(USB_LOG_LEVEL_ERROR, 
-                                "could not start driver for new device %d",opResult);
-                return;
-        }
-        hub->attached_devs[port].handle = child_handle;
+        opResult = usb_drv_register_child_in_devman(hc, hub->device,
+            new_device_address, &child_handle);
+        if (opResult != EOK) {
+                dprintf(1,"[usb_hub] could not start driver for new device");
+                return;
+        }
+        hub->attached_devs[port].devman_handle = child_handle;
         hub->attached_devs[port].address = new_device_address;
 
-        //opResult = usb_drv_bind_address(hc, new_device_address, child_handle);
-        opResult = usb_hc_register_device(
-                        &hub->connection,
-                        &hub->attached_devs[port]);
-        if (opResult != EOK) {
-                dprintf(USB_LOG_LEVEL_ERROR, 
-                                "could not assign address of device in hcd %d",opResult);
-                return;
-        }
-        dprintf(USB_LOG_LEVEL_INFO, "new device address %d, handle %zu",
+        opResult = usb_drv_bind_address(hc, new_device_address, child_handle);
+        if (opResult != EOK) {
+                dprintf(1,"[usb_hub] could not assign address of device in hcd");
+                return;
+        }
+        dprintf(1,"[usb_hub] new device address %d, handle %zu",
             new_device_address, child_handle);
 
@@ -506 +345 @@
 
 /**
- * Unregister device address in hc
+ * unregister device address in hc
  * @param hc
  * @param port
@@ -512 +351 @@
  */
 static void usb_hub_removed_device(
-    usb_hub_info_t * hub,uint16_t port) {
+    usb_hub_info_t * hub, int hc, uint16_t port, usb_target_t target) {
         //usb_device_request_setup_packet_t request;
         int opResult;
         
-        /** \TODO remove device from device manager - not yet implemented in
-         * devide manager
-         */
-        
+        /// \TODO remove device
+
+        hub->attached_devs[port].devman_handle=0;
         //close address
         if(hub->attached_devs[port].address!=0){
-                //opResult = usb_drv_release_address(hc,hub->attached_devs[port].address);
-                opResult = usb_hc_unregister_device(
-                                &hub->connection, hub->attached_devs[port].address);
+                opResult = usb_drv_release_address(hc,hub->attached_devs[port].address);
                 if(opResult != EOK) {
-                        dprintf(USB_LOG_LEVEL_WARNING, "could not release address of " \
-                            "removed device: %d", opResult);
+                        dprintf(1,
+                                        "[usb_hub] could not release address of removed device: %d"
+                                        ,opResult);
                 }
                 hub->attached_devs[port].address = 0;
-                hub->attached_devs[port].handle = 0;
         }else{
-                dprintf(USB_LOG_LEVEL_WARNING, "this is strange, disconnected device had no address");
+                dprintf(1,
+                                "[usb_hub] this is strange, disconnected device had no address");
                 //device was disconnected before it`s port was reset - return default address
-                //usb_drv_release_default_address(hc);
-                usb_hc_release_default_address(&hub->connection);
-        }
-}
-
+                usb_drv_release_default_address(hc);
+        }
+}
 
 /**
- *Process over current condition on port.
- * 
- * Turn off the power on the port.
- *
- * @param hub
- * @param port
- */
-static void usb_hub_over_current( usb_hub_info_t * hub,
-                uint16_t port){
-        int opResult;
-        opResult = usb_hub_clear_port_feature(&hub->endpoints.control,
-            port, USB_HUB_FEATURE_PORT_POWER);
-        if(opResult!=EOK){
-                dprintf(USB_LOG_LEVEL_ERROR, "cannot power off port %d;  %d",
-                                port, opResult);
-        }
-}
-
-/**
- * Process interrupts on given hub port
+ * process interrupts on given hub port
  * @param hc
  * @param port
  * @param target
  */
-static void usb_hub_process_interrupt(usb_hub_info_t * hub, 
-        uint16_t port) {
-        dprintf(USB_LOG_LEVEL_DEBUG, "interrupt at port %d", port);
+static void usb_hub_process_interrupt(usb_hub_info_t * hub, int hc,
+        uint16_t port, usb_address_t address) {
+        dprintf(1,"[usb_hub] interrupt at port %d", port);
         //determine type of change
-        usb_endpoint_pipe_t *pipe = &hub->endpoints.control;
-        
-        int opResult;
-
+        usb_target_t target;
+        target.address=address;
+        target.endpoint=0;
         usb_port_status_t status;
         size_t rcvd_size;
         usb_device_request_setup_packet_t request;
-        //int opResult;
+        int opResult;
         usb_hub_set_port_status_request(&request, port);
         //endpoint 0
 
-        opResult = usb_endpoint_pipe_control_read(
-                        pipe,
-                        &request, sizeof(usb_device_request_setup_packet_t),
+        opResult = usb_drv_sync_control_read(
+                        hc, target,
+                        &request,
                         &status, 4, &rcvd_size
                         );
         if (opResult != EOK) {
-                dprintf(USB_LOG_LEVEL_ERROR, "could not get port status");
+                dprintf(1,"[usb_hub] ERROR: could not get port status");
                 return;
         }
         if (rcvd_size != sizeof (usb_port_status_t)) {
-                dprintf(USB_LOG_LEVEL_ERROR, "received status has incorrect size");
+                dprintf(1,"[usb_hub] ERROR: received status has incorrect size");
                 return;
         }
         //something connected/disconnected
         if (usb_port_connect_change(&status)) {
-                opResult = usb_hub_clear_port_feature(pipe,
+                opResult = usb_hub_clear_port_feature(hc, target.address,
                     port, USB_HUB_FEATURE_C_PORT_CONNECTION);
                 // TODO: check opResult
                 if (usb_port_dev_connected(&status)) {
-                        dprintf(USB_LOG_LEVEL_INFO, "some connection changed");
-                        usb_hub_init_add_device(hub, port);
+                        dprintf(1,"[usb_hub] some connection changed");
+                        usb_hub_init_add_device(hc, port, target);
                 } else {
-                        usb_hub_removed_device(hub, port);
-                }
-        }
-        //over current
-        if (usb_port_overcurrent_change(&status)) {
-                //check if it was not auto-resolved
-                if(usb_port_over_current(&status)){
-                        usb_hub_over_current(hub,port);
-                }else{
-                        dprintf(USB_LOG_LEVEL_INFO,
-                                "over current condition was auto-resolved on port %d",port);
+                        usb_hub_removed_device(hub, hc, port, target);
                 }
         }
         //port reset
         if (usb_port_reset_completed(&status)) {
-                dprintf(USB_LOG_LEVEL_INFO, "port reset complete");
+                dprintf(1,"[usb_hub] port reset complete");
                 if (usb_port_enabled(&status)) {
-                        usb_hub_finalize_add_device(hub, port, usb_port_low_speed(&status));
+                        usb_hub_finalize_add_device(hub, hc, port, target);
                 } else {
-                        dprintf(USB_LOG_LEVEL_WARNING, "port reset, but port still not enabled");
+                        dprintf(1,"[usb_hub] ERROR: port reset, but port still not enabled");
                 }
         }
@@ -629 +434 @@
         usb_port_set_reset_completed(&status, false);
         usb_port_set_dev_connected(&status, false);
-        if (status>>16) {
-                dprintf(USB_LOG_LEVEL_INFO, "there was some unsupported change on port %d: %X",port,status);
-
+        if (status) {
+                dprintf(1,"[usb_hub]there was some unsupported change on port %d",port);
         }
         /// \TODO handle other changes
-}
-
-/**
- * Check changes on particular hub
- * @param hub_info_param
- */
-void usb_hub_check_hub_changes(usb_hub_info_t * hub_info){
-        int opResult;
-        opResult = usb_endpoint_pipe_start_session(&hub_info->endpoints.status_change);
-        if(opResult != EOK){
-                dprintf(USB_LOG_LEVEL_ERROR,
-                                "could not initialize communication for hub; %d", opResult);
-                return;
-        }
-
-        size_t port_count = hub_info->port_count;
-
-        /// FIXME: count properly
-        size_t byte_length = ((port_count+1) / 8) + 1;
+        /// \TODO debug log for various situations
+
+}
+
+/* Check changes on all known hubs.
+ */
+void usb_hub_check_hub_changes(void) {
+        /*
+         * Iterate through all hubs.
+         */
+        usb_general_list_t * lst_item;
+        futex_down(&usb_hub_list_lock);
+        for (lst_item = usb_hub_list.next;
+                        lst_item != &usb_hub_list;
+                        lst_item = lst_item->next) {
+                futex_up(&usb_hub_list_lock);
+                usb_hub_info_t * hub_info = ((usb_hub_info_t*)lst_item->data);
+                /*
+                 * Check status change pipe of this hub.
+                 */
+
+                usb_target_t target;
+                target.address = hub_info->usb_device->address;
+                target.endpoint = 1;/// \TODO get from endpoint descriptor
+                dprintf(1,"[usb_hub] checking changes for hub at addr %d",
+                    target.address);
+
+                size_t port_count = hub_info->port_count;
+
+                /*
+                 * Connect to respective HC.
+                 */
+                int hc = usb_drv_hc_connect_auto(hub_info->device, 0);
+                if (hc < 0) {
+                        continue;
+                }
+
+                /// FIXME: count properly
+                size_t byte_length = ((port_count+1) / 8) + 1;
+
                 void *change_bitmap = malloc(byte_length);
-        size_t actual_size;
-
-        /*
-         * Send the request.
-         */
-        opResult = usb_endpoint_pipe_read(
-                        &hub_info->endpoints.status_change,
-                        change_bitmap, byte_length, &actual_size
-                        );
-
-        if (opResult != EOK) {
+                size_t actual_size;
+                usb_handle_t handle;
+
+                /*
+                 * Send the request.
+                 */
+                int opResult = usb_drv_async_interrupt_in(hc, target,
+                                change_bitmap, byte_length, &actual_size,
+                                &handle);
+
+                usb_drv_async_wait_for(handle);
+
+                if (opResult != EOK) {
+                        dprintf(1,"[usb_hub] something went wrong while getting status of hub");
+                        continue;
+                }
+                unsigned int port;
+                for (port = 1; port < port_count+1; ++port) {
+                        bool interrupt =
+                                        (((uint8_t*) change_bitmap)[port / 8] >> (port % 8)) % 2;
+                        if (interrupt) {
+                                usb_hub_process_interrupt(
+                                        hub_info, hc, port, hub_info->usb_device->address);
+                        }
+                }
                 free(change_bitmap);
-                dprintf(USB_LOG_LEVEL_WARNING, "something went wrong while getting status of hub");
-                usb_endpoint_pipe_end_session(&hub_info->endpoints.status_change);
-                return;
-        }
-        unsigned int port;
-        opResult = usb_endpoint_pipe_start_session(&hub_info->endpoints.control);
-        if(opResult!=EOK){
-                dprintf(USB_LOG_LEVEL_ERROR, "could not start control pipe session %d",
-                                opResult);
-                usb_endpoint_pipe_end_session(&hub_info->endpoints.status_change);
-                return;
-        }
-        opResult = usb_hc_connection_open(&hub_info->connection);
-        if(opResult!=EOK){
-                dprintf(USB_LOG_LEVEL_ERROR, "could not start host controller session %d",
-                                opResult);
-                usb_endpoint_pipe_end_session(&hub_info->endpoints.control);
-                usb_endpoint_pipe_end_session(&hub_info->endpoints.status_change);
-                return;
-        }
-
-        ///todo, opresult check, pre obe konekce
-        for (port = 1; port < port_count+1; ++port) {
-                bool interrupt =
-                                (((uint8_t*) change_bitmap)[port / 8] >> (port % 8)) % 2;
-                if (interrupt) {
-                        usb_hub_process_interrupt(
-                                hub_info, port);
-                }
-        }
-        usb_hc_connection_close(&hub_info->connection);
-        usb_endpoint_pipe_end_session(&hub_info->endpoints.control);
-        usb_endpoint_pipe_end_session(&hub_info->endpoints.status_change);
-        free(change_bitmap);
-}
+
+                ipc_hangup(hc);
+                futex_down(&usb_hub_list_lock);
+        }
+        futex_up(&usb_hub_list_lock);
+}
+
+