Index: kernel/arch/sparc64/include/drivers/ns16550.h
===================================================================
--- kernel/arch/sparc64/include/drivers/ns16550.h	(revision 233af8c563ae6dbff256dbcf9920cbce40be88d0)
+++ kernel/arch/sparc64/include/drivers/ns16550.h	(revision e43982009725c81d67d73f4126d50ca467121cfb)
@@ -39,7 +39,15 @@
 #include <arch/drivers/kbd.h>
 
+/* NS16550 registers */
 #define RBR_REG		0	/** Receiver Buffer Register. */
 #define IER_REG		1	/** Interrupt Enable Register. */
+#define IIR_REG		2	/** Interrupt Ident Register (read). */
+#define FCR_REG		2	/** FIFO control register (write). */
+#define LCR_REG		3	/** Line Control register. */
 #define LSR_REG		5	/** Line Status Register. */
+
+#define IER_ERBFI	0x01	/** Enable Receive Buffer Full Interrupt. */
+
+#define LCR_DLAB	0x80	/** Divisor Latch Access bit. */
 
 static inline uint8_t ns16550_rbr_read(void)
@@ -58,4 +66,24 @@
 }
 
+static inline uint8_t ns16550_iir_read(void)
+{
+	return kbd_virt_address[IIR_REG];
+}
+
+static inline void ns16550_fcr_write(uint8_t v)
+{
+	kbd_virt_address[FCR_REG] = v;
+}
+
+static inline uint8_t ns16550_lcr_read(void)
+{
+	return kbd_virt_address[LCR_REG];
+}
+
+static inline void ns16550_lcr_write(uint8_t v)
+{
+	kbd_virt_address[LCR_REG] = v;
+}
+
 static inline uint8_t ns16550_lsr_read(void)
 {
Index: kernel/arch/sparc64/include/drivers/pci.h
===================================================================
--- kernel/arch/sparc64/include/drivers/pci.h	(revision e43982009725c81d67d73f4126d50ca467121cfb)
+++ kernel/arch/sparc64/include/drivers/pci.h	(revision e43982009725c81d67d73f4126d50ca467121cfb)
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2006 Jakub Jermar
+ * 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 sparc64	
+ * @{
+ */
+/** @file
+ */
+
+#ifndef KERN_sparc64_PCI_H_
+#define KERN_sparc64_PCI_H_
+
+#include <arch/types.h>
+#include <genarch/ofw/ofw_tree.h>
+#include <arch/arch.h>
+#include <arch/asm.h>
+
+typedef enum pci_model pci_model_t;
+typedef struct pci pci_t;
+typedef struct pci_operations pci_operations_t;
+
+enum pci_model {
+	PCI_UNKNOWN,
+	PCI_SABRE
+};
+
+struct pci_operations {
+	void (* enable_interrupt)(pci_t *pci, int inr);
+	void (* clear_interrupt)(pci_t *pci, int inr);
+};
+
+struct pci {
+	pci_model_t model;
+	pci_operations_t *op;
+	volatile uint64_t *reg;		/**< Registers including interrupt registers. */
+};
+
+extern pci_t *pci_init(ofw_tree_node_t *node);
+extern void pci_enable_interrupt(pci_t *pci, int inr);
+extern void pci_clear_interrupt(pci_t *pci, int inr);
+
+#endif
+
+/** @}
+ */