Changes in uspace/drv/usbhub/usbhub.c [c50941f:8123695a] in mainline

File:

• uspace/drv/usbhub/usbhub.c (modified) (8 diffs)

uspace/drv/usbhub/usbhub.c

@@ -53 +53 @@
 #include "usb/classes/classes.h"
 
+
+static void usb_hub_init_add_device(usb_hub_info_t * hub, uint16_t port,
+                usb_speed_t speed);
+
 static int usb_hub_trigger_connecting_non_removable_devices(
                 usb_hub_info_t * hub, usb_hub_descriptor_t * descriptor);
+
+/**
+ * control loop running in hub`s fibril
+ *
+ * Hub`s fibril periodically asks for changes on hub and if needded calls
+ * change handling routine.
+ * @warning currently hub driver asks for changes once a second
+ * @param hub_info_param hub representation pointer
+ * @return zero
+ */
+int usb_hub_control_loop(void * hub_info_param){
+        usb_hub_info_t * hub_info = (usb_hub_info_t*)hub_info_param;
+        int errorCode = EOK;
+
+        while(errorCode == EOK){
+                async_usleep(1000 * 1000 * 10 );/// \TODO proper number once
+                errorCode = usb_hub_check_hub_changes(hub_info);
+        }
+        usb_log_error("something in ctrl loop went wrong, errno %d\n",errorCode);
+
+        return 0;
+}
 
 
@@ -126 +152 @@
         usb_log_debug("setting port count to %d\n",descriptor->ports_count);
         hub_info->port_count = descriptor->ports_count;
-        hub_info->ports = malloc(sizeof(usb_hub_port_t) * (hub_info->port_count+1));
-        size_t port;
-        for (port = 0; port < hub_info->port_count + 1; port++) {
-                usb_hub_port_init(&hub_info->ports[port]);
+        hub_info->attached_devs = (usb_hc_attached_device_t*)
+            malloc((hub_info->port_count+1) * sizeof(usb_hc_attached_device_t));
+        int i;
+        for(i=0;i<hub_info->port_count+1;++i){
+                hub_info->attached_devs[i].handle=0;
+                hub_info->attached_devs[i].address=0;
         }
         //handle non-removable devices
@@ -231 +259 @@
         assert(rc == EOK);
 
-        /*
-         * The processing will require opened control pipe and connection
-         * to the host controller.
-         * It is waste of resources but let's hope there will be less
-         * hubs than the phone limit.
-         * FIXME: with some proper locking over pipes and session
-         * auto destruction, this could work better.
-         */
-        rc = usb_pipe_start_session(&usb_dev->ctrl_pipe);
-        if (rc != EOK) {
-                usb_log_error("Failed to start session on control pipe: %s.\n",
-                    str_error(rc));
-                goto leave;
-        }
-        rc = usb_hc_connection_open(&hub_info->connection);
-        if (rc != EOK) {
-                usb_pipe_end_session(&usb_dev->ctrl_pipe);
-                usb_log_error("Failed to open connection to HC: %s.\n",
-                    str_error(rc));
-                goto leave;
-        }
-
-        rc = usb_device_auto_poll(hub_info->usb_device, 0,
-            hub_port_changes_callback, ((hub_info->port_count+1) / 8) + 1,
-            NULL, hub_info);
-        if (rc != EOK) {
-                usb_log_error("Failed to create polling fibril: %s.\n",
-                    str_error(rc));
-                free(hub_info);
-                return rc;
-        }
+        //create fibril for the hub control loop
+        fid_t fid = fibril_create(usb_hub_control_loop, hub_info);
+        if (fid == 0) {
+                usb_log_error("failed to start monitoring fibril for new hub.\n");
+                return ENOMEM;
+        }
+        fibril_add_ready(fid);
+        usb_log_debug("Hub fibril created.\n");
 
         usb_log_info("Controlling hub `%s' (%d ports).\n",
             hub_info->usb_device->ddf_dev->name, hub_info->port_count);
         return EOK;
-
-leave:
-        free(hub_info);
-
-        return rc;
 }
 
@@ -400 +400 @@
 
 /**
+ * Reset the port with new device and reserve the default address.
+ * @param hub hub representation
+ * @param port port number, starting from 1
+ * @param speed transfer speed of attached device, one of low, full or high
+ */
+static void usb_hub_init_add_device(usb_hub_info_t * hub, uint16_t port,
+                usb_speed_t speed) {
+        //if this hub already uses default address, it cannot request it once more
+        if(hub->is_default_address_used) return;
+        usb_log_debug("some connection changed\n");
+        assert(hub->control_pipe->hc_phone);
+        int opResult = usb_hub_clear_port_feature(hub->control_pipe,
+                                port, USB_HUB_FEATURE_C_PORT_CONNECTION);
+        if(opResult != EOK){
+                usb_log_warning("could not clear port-change-connection flag\n");
+        }
+        usb_device_request_setup_packet_t request;
+        
+        //get default address
+        opResult = usb_hc_reserve_default_address(&hub->connection, speed);
+        
+        if (opResult != EOK) {
+                usb_log_warning("cannot assign default address, it is probably used %d\n",
+                                opResult);
+                return;
+        }
+        hub->is_default_address_used = true;
+        //reset port
+        usb_hub_set_reset_port_request(&request, port);
+        opResult = usb_pipe_control_write(
+                        hub->control_pipe,
+                        &request,sizeof(usb_device_request_setup_packet_t),
+                        NULL, 0
+                        );
+        if (opResult != EOK) {
+                usb_log_error("something went wrong when reseting a port %d\n",opResult);
+                usb_hub_release_default_address(hub);
+        }
+        return;
+}
+
+/**
+ * Finalize adding new device after port reset
+ *
+ * Set device`s address and start it`s driver.
+ * @param hub hub representation
+ * @param port port number, starting from 1
+ * @param speed transfer speed of attached device, one of low, full or high
+ */
+static void usb_hub_finalize_add_device( usb_hub_info_t * hub,
+                uint16_t port, usb_speed_t speed) {
+
+        int opResult;
+        usb_log_debug("finalizing add device\n");
+        opResult = usb_hub_clear_port_feature(hub->control_pipe,
+            port, USB_HUB_FEATURE_C_PORT_RESET);
+
+        if (opResult != EOK) {
+                usb_log_error("failed to clear port reset feature\n");
+                usb_hub_release_default_address(hub);
+                return;
+        }
+        //create connection to device
+        usb_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_pipe_initialize_default_control(
+                        &new_device_pipe,
+                        &new_device_connection);
+        usb_pipe_probe_default_control(&new_device_pipe);
+
+        /* Request address from host controller. */
+        usb_address_t new_device_address = usb_hc_request_address(
+                        &hub->connection,
+                        speed
+                        );
+        if (new_device_address < 0) {
+                usb_log_error("failed to get free USB address\n");
+                opResult = new_device_address;
+                usb_hub_release_default_address(hub);
+                return;
+        }
+        usb_log_debug("setting new address %d\n",new_device_address);
+        //opResult = usb_drv_req_set_address(hc, USB_ADDRESS_DEFAULT,
+        //    new_device_address);
+        usb_pipe_start_session(&new_device_pipe);
+        opResult = usb_request_set_address(&new_device_pipe,new_device_address);
+        usb_pipe_end_session(&new_device_pipe);
+        if (opResult != EOK) {
+                usb_log_error("could not set address for new device %d\n",opResult);
+                usb_hub_release_default_address(hub);
+                return;
+        }
+
+        //opResult = usb_hub_release_default_address(hc);
+        opResult = usb_hub_release_default_address(hub);
+        if(opResult!=EOK){
+                return;
+        }
+
+        devman_handle_t child_handle;
+        //??
+    opResult = usb_device_register_child_in_devman(new_device_address,
+            hub->connection.hc_handle, hub->usb_device->ddf_dev, &child_handle,
+            NULL, NULL, NULL);
+
+        if (opResult != EOK) {
+                usb_log_error("could not start driver for new device %d\n",opResult);
+                return;
+        }
+        hub->attached_devs[port].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) {
+                usb_log_error("could not assign address of device in hcd %d\n",opResult);
+                return;
+        }
+        usb_log_info("Detected new device on `%s' (port %d), " \
+            "address %d (handle %llu).\n",
+            hub->usb_device->ddf_dev->name, (int) port,
+            new_device_address, child_handle);
+}
+
+/**
  * routine called when a device on port has been removed
  *
@@ -408 +539 @@
  * @param port port number, starting from 1
  */
-void usb_hub_removed_device(
+static void usb_hub_removed_device(
     usb_hub_info_t * hub,uint16_t port) {
 
@@ -421 +552 @@
         
         //close address
-        if(hub->ports[port].attached_device.address >= 0){
+        if(hub->attached_devs[port].address!=0){
                 /*uncomment this code to use it when DDF allows device removal
                 opResult = usb_hc_unregister_device(
@@ -448 +579 @@
  * @param port port number, starting from 1
  */
-void usb_hub_over_current( usb_hub_info_t * hub,
+static void usb_hub_over_current( usb_hub_info_t * hub,
                 uint16_t port){
         int opResult;
@@ -459 +590 @@
 }
 
+/**
+ * Process interrupts on given hub port
+ *
+ * Accepts connection, over current and port reset change.
+ * @param hub hub representation
+ * @param port port number, starting from 1
+ */
+static void usb_hub_process_interrupt(usb_hub_info_t * hub, 
+        uint16_t port) {
+        usb_log_debug("interrupt at port %d\n", port);
+        //determine type of change
+        usb_pipe_t *pipe = hub->control_pipe;
+        
+        int opResult;
+
+        usb_port_status_t status;
+        size_t rcvd_size;
+        usb_device_request_setup_packet_t request;
+        //int opResult;
+        usb_hub_set_port_status_request(&request, port);
+        //endpoint 0
+
+        opResult = usb_pipe_control_read(
+                        pipe,
+                        &request, sizeof(usb_device_request_setup_packet_t),
+                        &status, 4, &rcvd_size
+                        );
+        if (opResult != EOK) {
+                usb_log_error("could not get port status\n");
+                return;
+        }
+        if (rcvd_size != sizeof (usb_port_status_t)) {
+                usb_log_error("received status has incorrect size\n");
+                return;
+        }
+        //something connected/disconnected
+        if (usb_port_connect_change(&status)) {
+                usb_log_debug("connection change on port\n");
+                if (usb_port_dev_connected(&status)) {
+                        usb_log_debug("some connection changed\n");
+                        usb_hub_init_add_device(hub, port, usb_port_speed(&status));
+                } else {
+                        usb_hub_removed_device(hub, port);
+                }
+        }
+        //over current
+        if (usb_port_overcurrent_change(&status)) {
+                //check if it was not auto-resolved
+                usb_log_debug("overcurrent change on port\n");
+                if(usb_port_over_current(&status)){
+                        usb_hub_over_current(hub,port);
+                }else{
+                        usb_log_debug("over current condition was auto-resolved on port %d\n",
+                                        port);
+                }
+        }
+        //port reset
+        if (usb_port_reset_completed(&status)) {
+                usb_log_debug("port reset complete\n");
+                if (usb_port_enabled(&status)) {
+                        usb_hub_finalize_add_device(hub, port, usb_port_speed(&status));
+                } else {
+                        usb_log_warning("port reset, but port still not enabled\n");
+                }
+        }
+        usb_log_debug("status %x\n ",status);
+
+        usb_port_set_connect_change(&status, false);
+        usb_port_set_reset(&status, false);
+        usb_port_set_reset_completed(&status, false);
+        usb_port_set_dev_connected(&status, false);
+        if (status>>16) {
+                usb_log_info("there was some unsupported change on port %d: %X\n",
+                                port,status);
+
+        }
+}
+
+/**
+ * check changes on hub
+ *
+ * Handles changes on each port with a status change.
+ * @param hub_info hub representation
+ * @return error code
+ */
+int usb_hub_check_hub_changes(usb_hub_info_t * hub_info){
+        int opResult;
+        opResult = usb_pipe_start_session(
+                        hub_info->status_change_pipe);
+        if(opResult != EOK){
+                usb_log_error("could not initialize communication for hub; %d\n",
+                                opResult);
+                return opResult;
+        }
+
+        size_t port_count = hub_info->port_count;
+
+        /// 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_pipe_read(
+                        hub_info->status_change_pipe,
+                        change_bitmap, byte_length, &actual_size
+                        );
+
+        if (opResult != EOK) {
+                free(change_bitmap);
+                usb_log_warning("something went wrong while getting status of hub\n");
+                usb_pipe_end_session(hub_info->status_change_pipe);
+                return opResult;
+        }
+        unsigned int port;
+        opResult = usb_pipe_start_session(hub_info->control_pipe);
+        if(opResult!=EOK){
+                usb_log_error("could not start control pipe session %d\n", opResult);
+                usb_pipe_end_session(hub_info->status_change_pipe);
+                return opResult;
+        }
+        opResult = usb_hc_connection_open(&hub_info->connection);
+        if(opResult!=EOK){
+                usb_log_error("could not start host controller session %d\n",
+                                opResult);
+                usb_pipe_end_session(hub_info->control_pipe);
+                usb_pipe_end_session(hub_info->status_change_pipe);
+                return opResult;
+        }
+
+        ///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_pipe_end_session(hub_info->control_pipe);
+        usb_pipe_end_session(hub_info->status_change_pipe);
+        free(change_bitmap);
+        return EOK;
+}
+
+
 
 /**