Index: uspace/srv/hid/kbd/port/niagara.c
===================================================================
--- uspace/srv/hid/kbd/port/niagara.c	(revision eeb643ddb3783861fb3ee6f341c31c048865cfe1)
+++ uspace/srv/hid/kbd/port/niagara.c	(revision eeb643ddb3783861fb3ee6f341c31c048865cfe1)
@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 2008 Pavel Rimsky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup kbd_port
+ * @ingroup  kbd
+ * @{
+ */ 
+/** @file
+ * @brief	Niagara console keyboard port driver.
+ */
+
+#include <as.h>
+#include <ddi.h>
+#include <async.h>
+#include <kbd.h>
+#include <kbd_port.h>
+#include <sysinfo.h>
+#include <stdio.h>
+#include <thread.h>
+#include <bool.h>
+
+#define POLL_INTERVAL		10000
+
+static volatile bool polling_disabled = false;
+//static void *niagara_thread_impl(void *arg);
+
+/**
+ * Initializes the SGCN driver.
+ * Maps the physical memory (SRAM) and creates the polling thread. 
+ */
+int kbd_port_init(void)
+{
+	printf("****************** Niagara keyboard driver **********************\n");
+	/*
+	thread_id_t tid;
+	int rc;
+
+	rc = thread_create(niagara_thread_impl, NULL, "kbd_poll", &tid);
+	if (rc != 0) {
+		return rc;
+	}
+	*/
+	return 0;
+}
+
+void kbd_port_yield(void)
+{
+	polling_disabled = true;
+}
+
+void kbd_port_reclaim(void)
+{
+	polling_disabled = false;
+}
+
+void kbd_port_write(uint8_t data)
+{
+	(void) data;
+}
+
+/**
+ * Handler of the "key pressed" event. Reads codes of all the pressed keys from
+ * the buffer. 
+ */
+static void niagara_key_pressed(void)
+{
+	printf("%s\n", "polling");
+/*
+	char c;
+	
+	uint32_t begin = SGCN_BUFFER_HEADER->in_begin;
+	uint32_t end = SGCN_BUFFER_HEADER->in_end;
+	uint32_t size = end - begin;
+	
+	volatile char *buf_ptr = (volatile char *)
+		SGCN_BUFFER(char, SGCN_BUFFER_HEADER->in_rdptr);
+	volatile uint32_t *in_wrptr_ptr = &(SGCN_BUFFER_HEADER->in_wrptr);
+	volatile uint32_t *in_rdptr_ptr = &(SGCN_BUFFER_HEADER->in_rdptr);
+	
+	while (*in_rdptr_ptr != *in_wrptr_ptr) {
+		c = *buf_ptr;
+		*in_rdptr_ptr = (((*in_rdptr_ptr) - begin + 1) % size) + begin;
+		buf_ptr = (volatile char *)
+			SGCN_BUFFER(char, SGCN_BUFFER_HEADER->in_rdptr);
+		kbd_push_scancode(c);
+	}
+*/
+}
+
+/**
+ * Thread to poll SGCN for keypresses.
+ */
+/*
+static void *niagara_thread_impl(void *arg)
+{
+	(void) arg;
+
+	while (1) {
+		if (polling_disabled == false)
+			niagara_key_pressed();
+		usleep(POLL_INTERVAL);
+	}
+	return 0;
+}
+*/
+/** @}
+ */