WebSVN – HelenOS – Diff – /branches/dynload/kernel/genarch/include/drivers/ns16550/ns16550.h


/*
 * Copyright (c) 2001-2004 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 genarch
 * @{
 */
/**
 * @file
 * @brief Headers for NS 16550 serial controller.
 */
 
#ifndef KERN_NS16550_H_
#define KERN_NS16550_H_
 
#include <ddi/irq.h>
#include <arch/types.h>
#include <console/chardev.h>
 
#define IER_ERBFI  0x01  /** Enable Receive Buffer Full Interrupt. */
 
#define LCR_DLAB   0x80  /** Divisor Latch Access bit. */
 
#define MCR_OUT2   0x08  /** OUT2. */
 
/** NS16550 registers. */
typedef struct {
    ioport8_t rbr;      /**< Receiver Buffer Register. */
    ioport8_t ier;      /**< Interrupt Enable Register. */
    union {
        ioport8_t iir;  /**< Interrupt Ident Register (read). */
        ioport8_t fcr;  /**< FIFO control register (write). */
    } __attribute__ ((packed));
    ioport8_t lcr;      /**< Line Control register. */
    ioport8_t mcr;      /**< Modem Control Register. */
    ioport8_t lsr;      /**< Line Status Register. */
} __attribute__ ((packed)) ns16550_t;
 
/** Structure representing the ns16550 device. */
typedef struct {
 
    irq_t irq;
    ns16550_t *ns16550;
    indev_t *kbrdin;
} ns16550_instance_t;
 
extern ns16550_instance_t *ns16550_init(ns16550_t *, inr_t, cir_t, void *);
extern void ns16550_wire(ns16550_instance_t *, indev_t *);
 
#endif
 
/** @}
 */
 

Subversion Repositories HelenOS

(root)/branches/dynload/kernel/genarch/include/drivers/ns16550/ns16550.h – Rev 4347 → 4348

Rev 4347		Rev 4348
1	/*	1	/*
2	* Copyright (c) 2001-2004 Jakub Jermar	2	* Copyright (c) 2001-2004 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup genarch	29	/** @addtogroup genarch
30	* @{	30	* @{
31	*/	31	*/
32	/**	32	/**
33	* @file	33	* @file
34	* @brief Headers for NS 16550 serial controller.	34	* @brief Headers for NS 16550 serial controller.
35	*/	35	*/
36		36
37	#ifndef KERN_NS16550_H_	37	#ifndef KERN_NS16550_H_
38	#define KERN_NS16550_H_	38	#define KERN_NS16550_H_
39		39
40	#include <ddi/irq.h>	40	#include <ddi/irq.h>
41	#include <arch/types.h>	41	#include <arch/types.h>
42	#include <console/chardev.h>	42	#include <console/chardev.h>
43		43
44	#define IER_ERBFI 0x01 /** Enable Receive Buffer Full Interrupt. */	44	#define IER_ERBFI 0x01 /** Enable Receive Buffer Full Interrupt. */
45		45
46	#define LCR_DLAB 0x80 /** Divisor Latch Access bit. */	46	#define LCR_DLAB 0x80 /** Divisor Latch Access bit. */
47		47
48	#define MCR_OUT2 0x08 /** OUT2. */	48	#define MCR_OUT2 0x08 /** OUT2. */
49		49
50	/** NS16550 registers. */	50	/** NS16550 registers. */
51	typedef struct {	51	typedef struct {
52	ioport8_t rbr; /*< Receiver Buffer Register. /	52	ioport8_t rbr; /*< Receiver Buffer Register. /
53	ioport8_t ier; /*< Interrupt Enable Register. /	53	ioport8_t ier; /*< Interrupt Enable Register. /
54	union {	54	union {
55	ioport8_t iir; /*< Interrupt Ident Register (read). /	55	ioport8_t iir; /*< Interrupt Ident Register (read). /
56	ioport8_t fcr; /*< FIFO control register (write). /	56	ioport8_t fcr; /*< FIFO control register (write). /
57	} __attribute__ ((packed));	57	} __attribute__ ((packed));
58	ioport8_t lcr; /*< Line Control register. /	58	ioport8_t lcr; /*< Line Control register. /
59	ioport8_t mcr; /*< Modem Control Register. /	59	ioport8_t mcr; /*< Modem Control Register. /
60	ioport8_t lsr; /*< Line Status Register. /	60	ioport8_t lsr; /*< Line Status Register. /
61	} __attribute__ ((packed)) ns16550_t;	61	} __attribute__ ((packed)) ns16550_t;
62		62
63	/** Structure representing the ns16550 device. */	63	/** Structure representing the ns16550 device. */
64	typedef struct {	64	typedef struct {
65	ns16550_t *ns16550;	-
66	irq_t irq;	65	irq_t irq;
-		66	ns16550_t *ns16550;
67	indev_t kbrdin;	67	indev_t *kbrdin;
68	} ns16550_instance_t;	68	} ns16550_instance_t;
69		69
70	extern indev_t ns16550_init(ns16550_t , inr_t, cir_t, void *);	70	extern ns16550_instance_t ns16550_init(ns16550_t , inr_t, cir_t, void *);
-		71	extern void ns16550_wire(ns16550_instance_t , indev_t );
71		72
72	#endif	73	#endif
73		74
74	/** @}	75	/** @}
75	*/	76	*/
76		77