Subversion Repositories HelenOS

Rev

Rev 3582 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
3549 rimsky 1
/*
2
 * Copyright (c) 2008 Pavel Rimsky
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 kbdsparc64 sparc64
30
 * @brief   Serengeti-specific parts of uspace keyboard handler.
31
 * @ingroup  kbd
32
 * @{
33
 */
34
/** @file
35
 */
36
 
37
#include <arch/sgcn.h>
38
#include <as.h>
39
#include <ddi.h>
40
#include <ipc/ipc.h>
41
#include <kbd.h>
42
#include <genarch/nofb.h>
43
#include <genarch/kbd.h>
44
#include <sysinfo.h>
45
#include <stdio.h>
46
#include <futex.h>
47
 
48
/**
49
 * SGCN buffer header. It is placed at the very beginning of the SGCN
50
 * buffer.
51
 */
52
typedef struct {
53
    /** hard-wired to "CON" */
54
    char magic[4];
55
 
56
    /** we don't need this */
57
    char unused[8];
58
 
59
    /** offset within the SGCN buffer of the input buffer start */
60
    uint32_t in_begin;
61
 
62
    /** offset within the SGCN buffer of the input buffer end */
63
    uint32_t in_end;
64
 
65
    /** offset within the SGCN buffer of the input buffer read pointer */
66
    uint32_t in_rdptr;
67
 
68
    /** offset within the SGCN buffer of the input buffer write pointer */
69
    uint32_t in_wrptr;
70
} __attribute__ ((packed)) sgcn_buffer_header_t;
71
 
72
/*
73
 * Returns a pointer to the object of a given type which is placed at the given
74
 * offset from the console buffer beginning.
75
 */
76
#define SGCN_BUFFER(type, offset) \
77
        ((type *) (sram_virt_addr + sram_buffer_offset + (offset)))
78
 
79
/** Returns a pointer to the console buffer header. */
80
#define SGCN_BUFFER_HEADER  (SGCN_BUFFER(sgcn_buffer_header_t, 0))
81
 
82
extern keybuffer_t keybuffer;
83
 
84
/**
85
 * Virtual address mapped to SRAM.
86
 */
87
static uintptr_t sram_virt_addr;
88
 
89
/**
90
 * SGCN buffer offset within SGCN.
91
 */
92
static uintptr_t sram_buffer_offset;
93
 
94
/**
95
 * Initializes the SGCN driver.
96
 * Maps the physical memory (SRAM) and registers the interrupt.
97
 */
98
void sgcn_init(void)
99
{
100
    sram_virt_addr = (uintptr_t) as_get_mappable_page(sysinfo_value("sram.area.size"));
101
    int result = physmem_map(
102
        (void *) sysinfo_value("sram.address.physical"),
103
        (void *) sram_virt_addr,
104
        sysinfo_value("sram.area.size") / PAGE_SIZE,
105
        AS_AREA_READ | AS_AREA_WRITE
106
        );
107
    if (result != 0) {
108
        printf("SGCN: uspace driver could not map physical memory.");
109
    }
110
 
111
    sram_buffer_offset = sysinfo_value("sram.buffer.offset");
112
    ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"),
113
        0, (void *) 0);
114
}
115
 
116
/**
117
 * Handler of the "key pressed" event. Reads codes of all the pressed keys from
118
 * the buffer.
119
 */
120
void sgcn_key_pressed(void)
121
{
122
    char c;
123
 
124
    uint32_t begin = SGCN_BUFFER_HEADER->in_begin;
125
    uint32_t end = SGCN_BUFFER_HEADER->in_end;
126
    uint32_t size = end - begin;
127
 
128
    volatile char *buf_ptr = (volatile char *)
129
        SGCN_BUFFER(char, SGCN_BUFFER_HEADER->in_rdptr);
130
    volatile uint32_t *in_wrptr_ptr = &(SGCN_BUFFER_HEADER->in_wrptr);
131
    volatile uint32_t *in_rdptr_ptr = &(SGCN_BUFFER_HEADER->in_rdptr);
132
 
133
    while (*in_rdptr_ptr != *in_wrptr_ptr) {
134
        c = *buf_ptr;
135
        *in_rdptr_ptr = (((*in_rdptr_ptr) - begin + 1) % size) + begin;
136
        buf_ptr = (volatile char *)
137
            SGCN_BUFFER(char, SGCN_BUFFER_HEADER->in_rdptr);
138
        if (c == '\r') {
139
                        c = '\n';
140
                }
141
        kbd_process_no_fb(&keybuffer, c);
142
    }
143
}
144
 
145
/** @}
146
 */