Subversion Repositories HelenOS

Rev

Rev 2071 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1844 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2006 Jakub Jermar
1844 jermar 3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
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
15
 *   derived from this software without specific prior written permission.
16
 *
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
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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
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
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
29
/** @addtogroup sparc64
30
 * @{
31
 */
32
/** @file
33
 */
34
 
35
#ifndef KERN_sparc64_NS16550_H_
36
#define KERN_sparc64_NS16550_H_
37
 
38
#include <arch/types.h>
39
#include <arch/drivers/kbd.h>
40
 
1911 jermar 41
/* NS16550 registers */
1844 jermar 42
#define RBR_REG     0   /** Receiver Buffer Register. */
1849 jermar 43
#define IER_REG     1   /** Interrupt Enable Register. */
1911 jermar 44
#define IIR_REG     2   /** Interrupt Ident Register (read). */
45
#define FCR_REG     2   /** FIFO control register (write). */
46
#define LCR_REG     3   /** Line Control register. */
1844 jermar 47
#define LSR_REG     5   /** Line Status Register. */
48
 
1911 jermar 49
#define IER_ERBFI   0x01    /** Enable Receive Buffer Full Interrupt. */
50
 
51
#define LCR_DLAB    0x80    /** Divisor Latch Access bit. */
52
 
1921 jermar 53
/** Structure representing the ns16550 device. */
54
typedef struct {
55
    devno_t devno;
56
    volatile uint8_t *reg;  /** Memory mapped registers of the ns16550. */
57
} ns16550_t;
58
 
59
static inline uint8_t ns16550_rbr_read(ns16550_t *dev)
1844 jermar 60
{
1921 jermar 61
    return dev->reg[RBR_REG];
1844 jermar 62
}
63
 
1921 jermar 64
static inline uint8_t ns16550_ier_read(ns16550_t *dev)
1849 jermar 65
{
1921 jermar 66
    return dev->reg[IER_REG];
1849 jermar 67
}
68
 
1921 jermar 69
static inline void ns16550_ier_write(ns16550_t *dev, uint8_t v)
1849 jermar 70
{
1921 jermar 71
    dev->reg[IER_REG] = v;
1849 jermar 72
}
73
 
1921 jermar 74
static inline uint8_t ns16550_iir_read(ns16550_t *dev)
1911 jermar 75
{
1921 jermar 76
    return dev->reg[IIR_REG];
1911 jermar 77
}
78
 
1921 jermar 79
static inline void ns16550_fcr_write(ns16550_t *dev, uint8_t v)
1911 jermar 80
{
1921 jermar 81
    dev->reg[FCR_REG] = v;
1911 jermar 82
}
83
 
1921 jermar 84
static inline uint8_t ns16550_lcr_read(ns16550_t *dev)
1911 jermar 85
{
1921 jermar 86
    return dev->reg[LCR_REG];
1911 jermar 87
}
88
 
1921 jermar 89
static inline void ns16550_lcr_write(ns16550_t *dev, uint8_t v)
1911 jermar 90
{
1921 jermar 91
    dev->reg[LCR_REG] = v;
1911 jermar 92
}
93
 
1921 jermar 94
static inline uint8_t ns16550_lsr_read(ns16550_t *dev)
1844 jermar 95
{
1921 jermar 96
    return dev->reg[LSR_REG];
1844 jermar 97
}
98
 
99
#endif
100
 
101
/** @}
102
 */