Changes in uspace/drv/usbhid/main.c [1c6c4092:c2fa801] in mainline

File:

• uspace/drv/usbhid/main.c (modified) (2 diffs)

uspace/drv/usbhid/main.c

@@ -37 +37 @@
 
 #include <ddf/driver.h>
+#include <ipc/driver.h>
+#include <ipc/kbd.h>
+#include <io/keycode.h>
+#include <io/console.h>
+#include <errno.h>
+#include <str_error.h>
+#include <fibril.h>
 #include <usb/debug.h>
-#include <errno.h>
-
-#include "kbddev.h"
-
-/*----------------------------------------------------------------------------*/
-
+#include <usb/classes/classes.h>
+#include <usb/classes/hid.h>
+#include <usb/classes/hidparser.h>
+#include <usb/request.h>
+#include <usb/descriptor.h>
+#include <io/console.h>
+#include <stdint.h>
+#include <usb/dp.h>
+#include "hid.h"
+#include "conv.h"
+#include "layout.h"
+
+#define BUFFER_SIZE 8
+#define BUFFER_OUT_SIZE 1
 #define NAME "usbhid"
 
-/*----------------------------------------------------------------------------*/
-
-static int usbhid_add_device(ddf_dev_t *dev)
-{
-        usb_log_debug("usbhid_add_device()\n");
-        
-        int rc = usbhid_kbd_try_add_device(dev);
-        
-        if (rc != EOK) {
-                usb_log_info("Device is not a supported keyboard.\n");
-                usb_log_error("Failed to add HID device.\n");
+//#define GUESSED_POLL_ENDPOINT 1
+#define BOOTP_REPORT_SIZE 6
+
+static unsigned DEFAULT_ACTIVE_MODS = KM_NUM_LOCK;
+
+/** Keyboard polling endpoint description for boot protocol class. */
+static usb_endpoint_description_t poll_endpoint_description = {
+        .transfer_type = USB_TRANSFER_INTERRUPT,
+        .direction = USB_DIRECTION_IN,
+        .interface_class = USB_CLASS_HID,
+        .interface_subclass = USB_HID_SUBCLASS_BOOT,
+        .interface_protocol = USB_HID_PROTOCOL_KEYBOARD,
+        .flags = 0
+};
+
+static void default_connection_handler(ddf_fun_t *, ipc_callid_t, ipc_call_t *);
+static ddf_dev_ops_t keyboard_ops = {
+        .default_handler = default_connection_handler
+};
+
+static int console_callback_phone = -1;
+
+/** Default handler for IPC methods not handled by DDF.
+ *
+ * @param dev Device handling the call.
+ * @param icallid Call id.
+ * @param icall Call data.
+ */
+void default_connection_handler(ddf_fun_t *fun,
+    ipc_callid_t icallid, ipc_call_t *icall)
+{
+        sysarg_t method = IPC_GET_IMETHOD(*icall);
+
+        if (method == IPC_M_CONNECT_TO_ME) {
+                int callback = IPC_GET_ARG5(*icall);
+
+                if (console_callback_phone != -1) {
+                        async_answer_0(icallid, ELIMIT);
+                        return;
+                }
+
+                console_callback_phone = callback;
+                async_answer_0(icallid, EOK);
+                return;
+        }
+
+        async_answer_0(icallid, EINVAL);
+}
+
+#if 0
+static void send_key(int key, int type, wchar_t c) {
+        async_msg_4(console_callback_phone, KBD_EVENT, type, key,
+            KM_NUM_LOCK, c);
+}
+#endif
+
+/*
+ * TODO: Move somewhere else
+ */
+/*
+#define BYTES_PER_LINE 12
+
+static void dump_buffer(const char *msg, const uint8_t *buffer, size_t length)
+{uint8_t buffer[BUFFER_SIZE];
+        printf("%s\n", msg);
+        
+        size_t i;
+        for (i = 0; i < length; i++) {
+                printf("  0x%02X", buffer[i]);
+                if (((i > 0) && (((i+1) % BYTES_PER_LINE) == 0))
+                    || (i + 1 == length)) {
+                        printf("\n");
+                }
+        }
+}
+*/
+/*
+ * Copy-paste from srv/hid/kbd/generic/kbd.c
+ */
+
+/** Currently active modifiers (locks is probably better word).
+ *
+ * TODO: put to device?
+ */
+//static unsigned mods = KM_NUM_LOCK;
+
+/** Currently pressed lock keys. We track these to tackle autorepeat.  
+ *
+ * TODO: put to device? 
+ */
+//static unsigned lock_keys;
+
+#define NUM_LAYOUTS 3
+
+static layout_op_t *layout[NUM_LAYOUTS] = {
+        &us_qwerty_op,
+        &us_dvorak_op,
+        &cz_op
+};
+
+static int active_layout = 0;
+
+static void usbkbd_req_set_report(usb_hid_dev_kbd_t *kbd_dev, uint16_t iface,
+    usb_hid_report_type_t type, uint8_t *buffer, size_t buf_size)
+{
+        int rc, sess_rc;
+        
+        sess_rc = usb_endpoint_pipe_start_session(&kbd_dev->ctrl_pipe);
+        if (sess_rc != EOK) {
+                usb_log_warning("Failed to start a session: %s.\n",
+                    str_error(sess_rc));
+                return;
+        }
+
+        usb_log_debug("Sending Set_Report request to the device.\n");
+        
+        rc = usb_control_request_set(&kbd_dev->ctrl_pipe, 
+            USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_INTERFACE, 
+            USB_HIDREQ_SET_REPORT, type, iface, buffer, buf_size);
+
+        sess_rc = usb_endpoint_pipe_end_session(&kbd_dev->ctrl_pipe);
+
+        if (rc != EOK) {
+                usb_log_warning("Error sending output report to the keyboard: "
+                    "%s.\n", str_error(rc));
+                return;
+        }
+
+        if (sess_rc != EOK) {
+                usb_log_warning("Error closing session: %s.\n",
+                    str_error(sess_rc));
+                return;
+        }
+}
+
+static void usbkbd_req_set_protocol(usb_hid_dev_kbd_t *kbd_dev,
+    usb_hid_protocol_t protocol)
+{
+        int rc, sess_rc;
+        
+        sess_rc = usb_endpoint_pipe_start_session(&kbd_dev->ctrl_pipe);
+        if (sess_rc != EOK) {
+                usb_log_warning("Failed to start a session: %s.\n",
+                    str_error(sess_rc));
+                return;
+        }
+
+        usb_log_debug("Sending Set_Protocol request to the device ("
+            "protocol: %d, iface: %d).\n", protocol, kbd_dev->iface);
+        
+        rc = usb_control_request_set(&kbd_dev->ctrl_pipe, 
+            USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_INTERFACE, 
+            USB_HIDREQ_SET_PROTOCOL, protocol, kbd_dev->iface, NULL, 0);
+
+        sess_rc = usb_endpoint_pipe_end_session(&kbd_dev->ctrl_pipe);
+
+        if (rc != EOK) {
+                usb_log_warning("Error sending output report to the keyboard: "
+                    "%s.\n", str_error(rc));
+                return;
+        }
+
+        if (sess_rc != EOK) {
+                usb_log_warning("Error closing session: %s.\n",
+                    str_error(sess_rc));
+                return;
+        }
+}
+
+static void usbkbd_set_led(usb_hid_dev_kbd_t *kbd_dev) 
+{
+        uint8_t buffer[BUFFER_OUT_SIZE];
+        int rc= 0, i;
+        
+        memset(buffer, 0, BUFFER_OUT_SIZE);
+        uint8_t leds = 0;
+
+        if (kbd_dev->mods & KM_NUM_LOCK) {
+                leds |= USB_HID_LED_NUM_LOCK;
+        }
+        
+        if (kbd_dev->mods & KM_CAPS_LOCK) {
+                leds |= USB_HID_LED_CAPS_LOCK;
+        }
+        
+        if (kbd_dev->mods & KM_SCROLL_LOCK) {
+                leds |= USB_HID_LED_SCROLL_LOCK;
+        }
+
+        // TODO: COMPOSE and KANA
+        
+        usb_log_debug("Creating output report.\n");
+        usb_log_debug("Leds: 0x%x\n", leds);
+        if ((rc = usb_hid_boot_keyboard_output_report(
+            leds, buffer, BUFFER_OUT_SIZE)) != EOK) {
+                usb_log_warning("Error composing output report to the keyboard:"
+                    "%s.\n", str_error(rc));
+                return;
+        }
+        
+        usb_log_debug("Output report buffer: ");
+        for (i = 0; i < BUFFER_OUT_SIZE; ++i) {
+                usb_log_debug("0x%x ", buffer[i]);
+        }
+        usb_log_debug("\n");
+        
+        uint16_t value = 0;
+        value |= (USB_HID_REPORT_TYPE_OUTPUT << 8);
+
+        usbkbd_req_set_report(kbd_dev, kbd_dev->iface, value, buffer, 
+            BUFFER_OUT_SIZE);
+}
+
+static void kbd_push_ev(int type, unsigned int key, usb_hid_dev_kbd_t *kbd_dev)
+{
+        console_event_t ev;
+        unsigned mod_mask;
+
+        // TODO: replace by our own parsing?? or are the key codes identical??
+        switch (key) {
+        case KC_LCTRL: mod_mask = KM_LCTRL; break;
+        case KC_RCTRL: mod_mask = KM_RCTRL; break;
+        case KC_LSHIFT: mod_mask = KM_LSHIFT; break;
+        case KC_RSHIFT: mod_mask = KM_RSHIFT; break;
+        case KC_LALT: mod_mask = KM_LALT; break;
+        case KC_RALT: mod_mask = KM_RALT; break;
+        default: mod_mask = 0; break;
+        }
+
+        if (mod_mask != 0) {
+                if (type == KEY_PRESS)
+                        kbd_dev->mods = kbd_dev->mods | mod_mask;
+                else
+                        kbd_dev->mods = kbd_dev->mods & ~mod_mask;
+        }
+
+        switch (key) {
+        case KC_CAPS_LOCK: mod_mask = KM_CAPS_LOCK; usb_log_debug2("\n\nPushing CAPS LOCK! (mask: %u)\n\n", mod_mask); break;
+        case KC_NUM_LOCK: mod_mask = KM_NUM_LOCK; usb_log_debug2("\n\nPushing NUM LOCK! (mask: %u)\n\n", mod_mask); break;
+        case KC_SCROLL_LOCK: mod_mask = KM_SCROLL_LOCK; usb_log_debug2("\n\nPushing SCROLL LOCK! (mask: %u)\n\n", mod_mask); break;
+        default: mod_mask = 0; break;
+        }
+
+        if (mod_mask != 0) {
+                usb_log_debug2("\n\nChanging mods and lock keys\n");
+                usb_log_debug2("\nmods before: 0x%x\n", kbd_dev->mods);
+                usb_log_debug2("\nLock keys before:0x%x\n\n", kbd_dev->lock_keys);
+                
+                if (type == KEY_PRESS) {
+                        usb_log_debug2("\nKey pressed.\n");
+                        /*
+                         * Only change lock state on transition from released
+                         * to pressed. This prevents autorepeat from messing
+                         * up the lock state.
+                         */
+                        kbd_dev->mods = 
+                            kbd_dev->mods ^ (mod_mask & ~kbd_dev->lock_keys);
+                        kbd_dev->lock_keys = kbd_dev->lock_keys | mod_mask;
+
+                        /* Update keyboard lock indicator lights. */
+                        usbkbd_set_led(kbd_dev);
+                } else {
+                        usb_log_debug2("\nKey released.\n");
+                        kbd_dev->lock_keys = kbd_dev->lock_keys & ~mod_mask;
+                }
+        }
+
+        usb_log_debug2("\n\nmods after: 0x%x\n", kbd_dev->mods);
+        usb_log_debug2("\nLock keys after: 0x%x\n\n", kbd_dev->lock_keys);
+        
+        if (type == KEY_PRESS && (kbd_dev->mods & KM_LCTRL) && key == KC_F1) {
+                active_layout = 0;
+                layout[active_layout]->reset();
+                return;
+        }
+
+        if (type == KEY_PRESS && (kbd_dev->mods & KM_LCTRL) && key == KC_F2) {
+                active_layout = 1;
+                layout[active_layout]->reset();
+                return;
+        }
+
+        if (type == KEY_PRESS && (kbd_dev->mods & KM_LCTRL) && key == KC_F3) {
+                active_layout = 2;
+                layout[active_layout]->reset();
+                return;
+        }
+        
+        ev.type = type;
+        ev.key = key;
+        ev.mods = kbd_dev->mods;
+        
+        if (ev.mods & KM_NUM_LOCK) {
+                usb_log_debug("\n\nNum Lock turned on.\n\n");
+        }
+
+        ev.c = layout[active_layout]->parse_ev(&ev);
+
+        usb_log_debug2("Sending key %d to the console\n", ev.key);
+        assert(console_callback_phone != -1);
+        async_msg_4(console_callback_phone, KBD_EVENT, ev.type, ev.key, 
+            ev.mods, ev.c);
+}
+/*
+ * End of copy-paste
+ */
+
+        /*
+         * TODO:
+         * 1) key press / key release - how does the keyboard notify about 
+         *    release?
+         * 2) layouts (use the already defined), not important now
+         * 3) 
+         */
+
+static const keycode_t usb_hid_modifiers_keycodes[USB_HID_MOD_COUNT] = {
+        KC_LCTRL,         /* USB_HID_MOD_LCTRL */
+        KC_LSHIFT,        /* USB_HID_MOD_LSHIFT */
+        KC_LALT,          /* USB_HID_MOD_LALT */
+        0,                /* USB_HID_MOD_LGUI */
+        KC_RCTRL,         /* USB_HID_MOD_RCTRL */
+        KC_RSHIFT,        /* USB_HID_MOD_RSHIFT */
+        KC_RALT,          /* USB_HID_MOD_RALT */
+        0,                /* USB_HID_MOD_RGUI */
+};
+
+static void usbkbd_check_modifier_changes(usb_hid_dev_kbd_t *kbd_dev,
+    uint8_t modifiers)
+{
+        /*
+         * TODO: why the USB keyboard has NUM_, SCROLL_ and CAPS_LOCK
+         *       both as modifiers and as keys with their own scancodes???
+         *
+         * modifiers should be sent as normal keys to usbkbd_parse_scancode()!!
+         * so maybe it would be better if I received it from report parser in 
+         * that way
+         */
+        
+        int i;
+        for (i = 0; i < USB_HID_MOD_COUNT; ++i) {
+                if ((modifiers & usb_hid_modifiers_consts[i]) &&
+                    !(kbd_dev->modifiers & usb_hid_modifiers_consts[i])) {
+                        // modifier pressed
+                        if (usb_hid_modifiers_keycodes[i] != 0) {
+                                kbd_push_ev(KEY_PRESS, 
+                                    usb_hid_modifiers_keycodes[i], kbd_dev);
+                        }
+                } else if (!(modifiers & usb_hid_modifiers_consts[i]) &&
+                    (kbd_dev->modifiers & usb_hid_modifiers_consts[i])) {
+                        // modifier released
+                        if (usb_hid_modifiers_keycodes[i] != 0) {
+                                kbd_push_ev(KEY_RELEASE, 
+                                    usb_hid_modifiers_keycodes[i], kbd_dev);
+                        }
+                }       // no change
+        }
+        
+        kbd_dev->modifiers = modifiers;
+}
+
+static void usbkbd_check_key_changes(usb_hid_dev_kbd_t *kbd_dev, 
+    const uint8_t *key_codes)
+{
+        // TODO: phantom state!!
+        
+        unsigned int key;
+        unsigned int i, j;
+        
+        // TODO: quite dummy right now, think of better implementation
+        
+        // key releases
+        for (j = 0; j < kbd_dev->keycode_count; ++j) {
+                // try to find the old key in the new key list
+                i = 0;
+                while (i < kbd_dev->keycode_count
+                    && key_codes[i] != kbd_dev->keycodes[j]) {
+                        ++i;
+                }
+                
+                if (i == kbd_dev->keycode_count) {
+                        // not found, i.e. the key was released
+                        key = usbkbd_parse_scancode(kbd_dev->keycodes[j]);
+                        kbd_push_ev(KEY_RELEASE, key, kbd_dev);
+                        usb_log_debug2("\nKey released: %d\n", key);
+                } else {
+                        // found, nothing happens
+                }
+        }
+        
+        // key presses
+        for (i = 0; i < kbd_dev->keycode_count; ++i) {
+                // try to find the new key in the old key list
+                j = 0;
+                while (j < kbd_dev->keycode_count 
+                    && kbd_dev->keycodes[j] != key_codes[i]) { 
+                        ++j;
+                }
+                
+                if (j == kbd_dev->keycode_count) {
+                        // not found, i.e. new key pressed
+                        key = usbkbd_parse_scancode(key_codes[i]);
+                        usb_log_debug2("\nKey pressed: %d (keycode: %d)\n", key,
+                            key_codes[i]);
+                        kbd_push_ev(KEY_PRESS, key, kbd_dev);
+                } else {
+                        // found, nothing happens
+                }
+        }
+        
+        memcpy(kbd_dev->keycodes, key_codes, kbd_dev->keycode_count);
+        
+        usb_log_debug2("\nNew stored keycodes: ");
+        for (i = 0; i < kbd_dev->keycode_count; ++i) {
+                usb_log_debug2("%d ", kbd_dev->keycodes[i]);
+        }
+}
+
+/*
+ * Callbacks for parser
+ */
+static void usbkbd_process_keycodes(const uint8_t *key_codes, size_t count,
+    uint8_t modifiers, void *arg)
+{
+        if (arg == NULL) {
+                usb_log_warning("Missing argument in callback "
+                    "usbkbd_process_keycodes().\n");
+                return;
+        }
+
+        usb_log_debug2("Got keys from parser: ");
+        unsigned i;
+        for (i = 0; i < count; ++i) {
+                usb_log_debug2("%d ", key_codes[i]);
+        }
+        usb_log_debug2("\n");
+        
+        usb_hid_dev_kbd_t *kbd_dev = (usb_hid_dev_kbd_t *)arg;
+        
+        if (count != kbd_dev->keycode_count) {
+                usb_log_warning("Number of received keycodes (%d) differs from"
+                    " expected number (%d).\n", count, kbd_dev->keycode_count);
+                return;
+        }
+        
+        usbkbd_check_modifier_changes(kbd_dev, modifiers);
+        usbkbd_check_key_changes(kbd_dev, key_codes);
+}
+
+/*
+ * Kbd functions
+ */
+//static int usbkbd_get_report_descriptor(usb_hid_dev_kbd_t *kbd_dev)
+//{
+//      // iterate over all configurations and interfaces
+//      // TODO: more configurations!!
+//      unsigned i;
+//      for (i = 0; i < kbd_dev->conf->config_descriptor.interface_count; ++i) {
+//              // TODO: endianness
+//              uint16_t length =  kbd_dev->conf->interfaces[i].hid_desc.
+//                  report_desc_info.length;
+//              size_t actual_size = 0;
+
+//              // allocate space for the report descriptor
+//              kbd_dev->conf->interfaces[i].report_desc = 
+//                  (uint8_t *)malloc(length);
+                
+//              // get the descriptor from the device
+//              int rc = usb_request_get_descriptor(&kbd_dev->ctrl_pipe,
+//                  USB_REQUEST_TYPE_CLASS, USB_DESCTYPE_HID_REPORT,
+//                  i, 0,
+//                  kbd_dev->conf->interfaces[i].report_desc, length,
+//                  &actual_size);
+
+//              if (rc != EOK) {
+//                      return rc;
+//              }
+
+//              assert(actual_size == length);
+
+//              //dump_hid_class_descriptor(0, USB_DESCTYPE_HID_REPORT, 
+//              //    kbd_dev->conf->interfaces[i].report_desc, length);
+//      }
+
+//      return EOK;
+//}
+
+static int usbkbd_get_report_descriptor(usb_hid_dev_kbd_t *kbd_dev, 
+    uint8_t *config_desc, size_t config_desc_size, uint8_t *iface_desc)
+{
+        assert(kbd_dev != NULL);
+        assert(config_desc != NULL);
+        assert(config_desc_size != 0);
+        assert(iface_desc != NULL);
+        
+        usb_dp_parser_t parser =  {
+                .nesting = usb_dp_standard_descriptor_nesting
+        };
+        
+        usb_dp_parser_data_t parser_data = {
+                .data = config_desc,
+                .size = config_desc_size,
+                .arg = NULL
+        };
+        
+        /*
+         * First nested descriptor of interface descriptor.
+         */
+        uint8_t *d = 
+            usb_dp_get_nested_descriptor(&parser, &parser_data, iface_desc);
+        
+        /*
+         * Search through siblings until the HID descriptor is found.
+         */
+        while (d != NULL && *(d + 1) != USB_DESCTYPE_HID) {
+                d = usb_dp_get_sibling_descriptor(&parser, &parser_data, 
+                    iface_desc, d);
+        }
+        
+        if (d == NULL) {
+                usb_log_fatal("No HID descriptor found!\n");
+                return ENOENT;
+        }
+        
+        if (*d != sizeof(usb_standard_hid_descriptor_t)) {
+                usb_log_fatal("HID descriptor hass wrong size (%u, expected %u"
+                    ")\n", *d, sizeof(usb_standard_hid_descriptor_t));
+                return EINVAL;
+        }
+        
+        usb_standard_hid_descriptor_t *hid_desc = 
+            (usb_standard_hid_descriptor_t *)d;
+        
+        uint16_t length =  hid_desc->report_desc_info.length;
+        size_t actual_size = 0;
+
+        /*
+         * Allocate space for the report descriptor.
+         */
+        kbd_dev->report_desc = (uint8_t *)malloc(length);
+        if (kbd_dev->report_desc == NULL) {
+                usb_log_fatal("Failed to allocate space for Report descriptor."
+                    "\n");
+                return ENOMEM;
+        }
+        
+        usb_log_debug("Getting Report descriptor, expected size: %u\n", length);
+        
+        /*
+         * Get the descriptor from the device.
+         */
+        int rc = usb_request_get_descriptor(&kbd_dev->ctrl_pipe,
+            USB_REQUEST_TYPE_STANDARD, USB_REQUEST_RECIPIENT_INTERFACE,
+            USB_DESCTYPE_HID_REPORT, 0,
+            kbd_dev->iface, kbd_dev->report_desc, length, &actual_size);
+
+        if (rc != EOK) {
+                return rc;
+        }
+
+        if (actual_size != length) {
+                free(kbd_dev->report_desc);
+                kbd_dev->report_desc = NULL;
+                usb_log_fatal("Report descriptor has wrong size (%u, expected "
+                    "%u)\n", actual_size, length);
+                return EINVAL;
+        }
+        
+        usb_log_debug("Done.\n");
+        
+        return EOK;
+}
+
+static int usbkbd_process_descriptors(usb_hid_dev_kbd_t *kbd_dev)
+{
+        // get the first configuration descriptor (TODO: parse also other!)
+        usb_standard_configuration_descriptor_t config_desc;
+        
+        int rc;
+        rc = usb_request_get_bare_configuration_descriptor(&kbd_dev->ctrl_pipe,
+            0, &config_desc);
+        
+        if (rc != EOK) {
+                return rc;
+        }
+        
+        // prepare space for all underlying descriptors
+        uint8_t *descriptors = (uint8_t *)malloc(config_desc.total_length);
+        if (descriptors == NULL) {
+                return ENOMEM;
+        }
+        
+        size_t transferred = 0;
+        // get full configuration descriptor
+        rc = usb_request_get_full_configuration_descriptor(&kbd_dev->ctrl_pipe,
+            0, descriptors,
+            config_desc.total_length, &transferred);
+        
+        if (rc != EOK) {
+                return rc;
+        }
+        if (transferred != config_desc.total_length) {
+                return ELIMIT;
+        }
+        
+        /*
+         * Initialize the interrupt in endpoint.
+         */
+        usb_endpoint_mapping_t endpoint_mapping[1] = {
+                {
+                        .pipe = &kbd_dev->poll_pipe,
+                        .description = &poll_endpoint_description,
+                        .interface_no =
+                            usb_device_get_assigned_interface(kbd_dev->device)
+                }
+        };
+        rc = usb_endpoint_pipe_initialize_from_configuration(
+            endpoint_mapping, 1,
+            descriptors, config_desc.total_length,
+            &kbd_dev->wire);
+        
+        if (rc != EOK) {
+                usb_log_error("Failed to initialize poll pipe: %s.\n",
+                    str_error(rc));
+                free(descriptors);
+                return rc;
+        }
+        
+        if (!endpoint_mapping[0].present) {
+                usb_log_warning("Not accepting device, " \
+                    "not boot-protocol keyboard.\n");
+                free(descriptors);
                 return EREFUSED;
         }
         
+        usb_log_debug("Accepted device. Saving interface, and getting Report"
+            " descriptor.\n");
+        
+        /*
+         * Save assigned interface number.
+         */
+        if (endpoint_mapping[0].interface_no < 0) {
+                usb_log_error("Bad interface number.\n");
+                free(descriptors);
+                return EINVAL;
+        }
+        
+        kbd_dev->iface = endpoint_mapping[0].interface_no;
+        
+        assert(endpoint_mapping[0].interface != NULL);
+        
+        rc = usbkbd_get_report_descriptor(kbd_dev, descriptors, transferred,
+            (uint8_t *)endpoint_mapping[0].interface);
+        
+        free(descriptors);
+        
+        if (rc != EOK) {
+                usb_log_warning("Problem with parsing REPORT descriptor.\n");
+                return rc;
+        }
+        
+        usb_log_debug("Done parsing descriptors.\n");
+        
         return EOK;
 }
 
-/*----------------------------------------------------------------------------*/
+static usb_hid_dev_kbd_t *usbkbd_init_device(ddf_dev_t *dev)
+{
+        int rc;
+
+        usb_hid_dev_kbd_t *kbd_dev = (usb_hid_dev_kbd_t *)calloc(1, 
+            sizeof(usb_hid_dev_kbd_t));
+
+        if (kbd_dev == NULL) {
+                usb_log_fatal("No memory!\n");
+                return NULL;
+        }
+
+        kbd_dev->device = dev;
+
+        /*
+         * Initialize the backing connection to the host controller.
+         */
+        rc = usb_device_connection_initialize_from_device(&kbd_dev->wire, dev);
+        if (rc != EOK) {
+                printf("Problem initializing connection to device: %s.\n",
+                    str_error(rc));
+                goto error_leave;
+        }
+
+        /*
+         * Initialize device pipes.
+         */
+        rc = usb_endpoint_pipe_initialize_default_control(&kbd_dev->ctrl_pipe,
+            &kbd_dev->wire);
+        if (rc != EOK) {
+                printf("Failed to initialize default control pipe: %s.\n",
+                    str_error(rc));
+                goto error_leave;
+        }
+
+        /*
+         * Get descriptors, parse descriptors and save endpoints.
+         */
+        usb_endpoint_pipe_start_session(&kbd_dev->ctrl_pipe);
+        
+        rc = usbkbd_process_descriptors(kbd_dev);
+        
+        usb_endpoint_pipe_end_session(&kbd_dev->ctrl_pipe);
+        if (rc != EOK) {
+                goto error_leave;
+        }
+        
+        // save the size of the report (boot protocol report by default)
+        kbd_dev->keycode_count = BOOTP_REPORT_SIZE;
+        kbd_dev->keycodes = (uint8_t *)calloc(
+            kbd_dev->keycode_count, sizeof(uint8_t));
+        
+        if (kbd_dev->keycodes == NULL) {
+                usb_log_fatal("No memory!\n");
+                goto error_leave;
+        }
+        
+        kbd_dev->modifiers = 0;
+        kbd_dev->mods = DEFAULT_ACTIVE_MODS;
+        kbd_dev->lock_keys = 0;
+        
+        // set boot protocol
+        usbkbd_req_set_protocol(kbd_dev, USB_HID_PROTOCOL_BOOT);
+        
+        // set LEDs according to internal setup (NUM LOCK enabled)
+        usbkbd_set_led(kbd_dev);
+        
+        return kbd_dev;
+
+error_leave:
+        free(kbd_dev);
+        return NULL;
+}
+
+static void usbkbd_process_interrupt_in(usb_hid_dev_kbd_t *kbd_dev,
+                                        uint8_t *buffer, size_t actual_size)
+{
+        usb_hid_report_in_callbacks_t *callbacks =
+            (usb_hid_report_in_callbacks_t *)malloc(
+                sizeof(usb_hid_report_in_callbacks_t));
+        callbacks->keyboard = usbkbd_process_keycodes;
+
+        //usb_hid_parse_report(kbd_dev->parser, buffer, actual_size, callbacks, 
+        //    NULL);
+        /*usb_log_debug2("Calling usb_hid_boot_keyboard_input_report() with size"
+            " %zu\n", actual_size);*/
+        //dump_buffer("bufffer: ", buffer, actual_size);
+        int rc = usb_hid_boot_keyboard_input_report(buffer, actual_size,
+            callbacks, kbd_dev);
+        
+        if (rc != EOK) {
+                usb_log_warning("Error in usb_hid_boot_keyboard_input_report():"
+                    "%s\n", str_error(rc));
+        }
+}
+
+static void usbkbd_poll_keyboard(usb_hid_dev_kbd_t *kbd_dev)
+{
+        int rc, sess_rc;
+        uint8_t buffer[BUFFER_SIZE];
+        size_t actual_size;
+
+        usb_log_info("Polling keyboard...\n");
+
+        while (true) {
+                async_usleep(1000 * 10);
+
+                sess_rc = usb_endpoint_pipe_start_session(&kbd_dev->poll_pipe);
+                if (sess_rc != EOK) {
+                        usb_log_warning("Failed to start a session: %s.\n",
+                            str_error(sess_rc));
+                        continue;
+                }
+
+                rc = usb_endpoint_pipe_read(&kbd_dev->poll_pipe, buffer,
+                    BUFFER_SIZE, &actual_size);
+                sess_rc = usb_endpoint_pipe_end_session(&kbd_dev->poll_pipe);
+
+                if (rc != EOK) {
+                        usb_log_warning("Error polling the keyboard: %s.\n",
+                            str_error(rc));
+                        continue;
+                }
+
+                if (sess_rc != EOK) {
+                        usb_log_warning("Error closing session: %s.\n",
+                            str_error(sess_rc));
+                        continue;
+                }
+
+                /*
+                 * If the keyboard answered with NAK, it returned no data.
+                 * This implies that no change happened since last query.
+                 */
+                if (actual_size == 0) {
+                        usb_log_debug("Keyboard returned NAK\n");
+                        continue;
+                }
+
+                /*
+                 * TODO: Process pressed keys.
+                 */
+                usb_log_debug("Calling usbkbd_process_interrupt_in()\n");
+                usbkbd_process_interrupt_in(kbd_dev, buffer, actual_size);
+        }
+
+        // not reached
+        assert(0);
+}
+
+static int usbkbd_fibril_device(void *arg)
+{
+        if (arg == NULL) {
+                usb_log_error("No device!\n");
+                return -1;
+        }
+        
+        usb_hid_dev_kbd_t *kbd_dev = (usb_hid_dev_kbd_t *)arg;
+
+        usbkbd_poll_keyboard(kbd_dev);
+
+        return EOK;
+}
+
+static int usbkbd_add_device(ddf_dev_t *dev)
+{
+        /*
+         * Create default function.
+         */
+        // FIXME - check for errors
+        ddf_fun_t *kbd_fun = ddf_fun_create(dev, fun_exposed, "keyboard");
+        assert(kbd_fun != NULL);
+        kbd_fun->ops = &keyboard_ops;
+
+        int rc = ddf_fun_bind(kbd_fun);
+        assert(rc == EOK);
+        rc = ddf_fun_add_to_class(kbd_fun, "keyboard");
+        assert(rc == EOK);
+        
+        /* 
+         * Initialize device (get and process descriptors, get address, etc.)
+         */
+        usb_hid_dev_kbd_t *kbd_dev = usbkbd_init_device(dev);
+        if (kbd_dev == NULL) {
+                usb_log_error("Error while initializing device.\n");
+                return -1;
+        }
+
+        usb_log_info("Device initialized.\n");
+        
+        /*
+         * Create new fibril for handling this keyboard
+         */
+        fid_t fid = fibril_create(usbkbd_fibril_device, kbd_dev);
+        if (fid == 0) {
+                usb_log_error("Failed to start fibril for HID device\n");
+                return ENOMEM;
+        }
+        fibril_add_ready(fid);
+
+        //dev->ops = &keyboard_ops;
+        (void)keyboard_ops;
+
+        //add_device_to_class(dev, "keyboard");
+
+        /*
+         * Hurrah, device is initialized.
+         */
+        return EOK;
+}
 
 static driver_ops_t kbd_driver_ops = {
-        .add_device = usbhid_add_device,
+        .add_device = usbkbd_add_device,
 };
-
-/*----------------------------------------------------------------------------*/
 
 static driver_t kbd_driver = {
@@ -76 +946 @@
 };
 
-/*----------------------------------------------------------------------------*/
-
 int main(int argc, char *argv[])
 {