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/*
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/*
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 * Copyright (C) 2001-2006 Jakub Jermar
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 * Copyright (C) 2001-2006 Jakub Jermar
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 * All rights reserved.
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 * All rights reserved.
4
 *
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * modification, are permitted provided that the following conditions
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 * 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.
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 * - Redistributions in binary form must reproduce the above copyright
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 *   documentation and/or other materials provided with the distribution.
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 * - 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.
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 *
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * 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
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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 */
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29
/** @addtogroup genarch
29
/** @addtogroup genarch
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 * @{
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 * @{
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 */
31
 */
32
/**
32
/**
33
 * @file
33
 * @file
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 * @brief   NS 16550 serial port / keyboard driver.
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 * @brief   NS 16550 serial port / keyboard driver.
35
 */
35
 */
36
 
36
 
37
#include <genarch/kbd/ns16550.h>
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#include <genarch/kbd/ns16550.h>
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#include <genarch/kbd/key.h>
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#include <genarch/kbd/key.h>
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#include <genarch/kbd/scanc.h>
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#include <genarch/kbd/scanc.h>
40
#include <genarch/kbd/scanc_sun.h>
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#include <genarch/kbd/scanc_sun.h>
41
#include <arch/drivers/kbd.h>
41
#include <arch/drivers/kbd.h>
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#include <arch/drivers/ns16550.h>
42
#include <arch/drivers/ns16550.h>
43
#include <ddi/irq.h>
43
#include <ddi/irq.h>
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#include <ipc/irq.h>
44
#include <ipc/irq.h>
45
#include <cpu.h>
45
#include <cpu.h>
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#include <arch/asm.h>
46
#include <arch/asm.h>
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#include <arch.h>
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#include <arch.h>
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#include <typedefs.h>
48
#include <typedefs.h>
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#include <console/chardev.h>
49
#include <console/chardev.h>
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#include <console/console.h>
50
#include <console/console.h>
51
#include <interrupt.h>
51
#include <interrupt.h>
52
#include <arch/interrupt.h>
52
#include <arch/interrupt.h>
53
#include <sysinfo/sysinfo.h>
53
#include <sysinfo/sysinfo.h>
54
#include <synch/spinlock.h>
54
#include <synch/spinlock.h>
55
 
55
 
56
#define LSR_DATA_READY  0x01
56
#define LSR_DATA_READY  0x01
57
 
57
 
58
/** Structure representing the ns16550. */
58
/** Structure representing the ns16550. */
59
static ns16550_t ns16550;
59
static ns16550_t ns16550;
60
 
60
 
61
/** Structure for ns16550's IRQ. */
61
/** Structure for ns16550's IRQ. */
62
static irq_t ns16550_irq;
62
static irq_t ns16550_irq;
63
 
63
 
64
/*
64
/*
65
 * These codes read from ns16550 data register are silently ignored.
65
 * These codes read from ns16550 data register are silently ignored.
66
 */
66
 */
67
#define IGNORE_CODE 0x7f        /* all keys up */
67
#define IGNORE_CODE 0x7f        /* all keys up */
68
 
68
 
69
static void ns16550_suspend(chardev_t *);
69
static void ns16550_suspend(chardev_t *);
70
static void ns16550_resume(chardev_t *);
70
static void ns16550_resume(chardev_t *);
71
 
71
 
72
static chardev_operations_t ops = {
72
static chardev_operations_t ops = {
73
    .suspend = ns16550_suspend,
73
    .suspend = ns16550_suspend,
74
    .resume = ns16550_resume,
74
    .resume = ns16550_resume,
75
    .read = ns16550_key_read
75
    .read = ns16550_key_read
76
};
76
};
77
 
77
 
78
void ns16550_interrupt(void);
78
void ns16550_interrupt(void);
79
 
79
 
80
/** Initialize keyboard and service interrupts using kernel routine */
80
/** Initialize keyboard and service interrupts using kernel routine */
81
void ns16550_grab(void)
81
void ns16550_grab(void)
82
{
82
{
-
 
83
    ipl_t ipl = interrupts_disable();
-
 
84
 
83
    ns16550_ier_write(&ns16550, IER_ERBFI);     /* enable receiver interrupt */
85
    ns16550_ier_write(&ns16550, IER_ERBFI);     /* enable receiver interrupt */
84
   
86
   
85
    while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY)
87
    while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY)
86
        (void) ns16550_rbr_read(&ns16550);
88
        (void) ns16550_rbr_read(&ns16550);
87
 
89
 
-
 
90
    spinlock_lock(&ns16550_irq.lock);
88
    ns16550_irq.notif_cfg.notify = false;
91
    ns16550_irq.notif_cfg.notify = false;
-
 
92
    spinlock_unlock(&ns16550_irq.lock);
-
 
93
    interrupts_restore(ipl);
89
}
94
}
90
 
95
 
91
/** Resume the former interrupt vector */
96
/** Resume the former interrupt vector */
92
void ns16550_release(void)
97
void ns16550_release(void)
93
{
98
{
-
 
99
    ipl_t ipl = interrupts_disable();
-
 
100
    spinlock_lock(&ns16550_irq.lock);
94
    if (ns16550_irq.notif_cfg.answerbox)
101
    if (ns16550_irq.notif_cfg.answerbox)
95
        ns16550_irq.notif_cfg.notify = true;
102
        ns16550_irq.notif_cfg.notify = true;
-
 
103
    spinlock_unlock(&ns16550_irq.lock);
-
 
104
    interrupts_restore(ipl);
96
}
105
}
97
 
106
 
98
/** Initialize ns16550.
107
/** Initialize ns16550.
99
 *
108
 *
100
 * @param devno Device number.
109
 * @param devno Device number.
101
 * @param inr Interrupt number.
110
 * @param inr Interrupt number.
102
 * @param vaddr Virtual address of device's registers.
111
 * @param vaddr Virtual address of device's registers.
103
 */
112
 */
104
void ns16550_init(devno_t devno, inr_t inr, uintptr_t vaddr)
113
void ns16550_init(devno_t devno, inr_t inr, uintptr_t vaddr)
105
{
114
{
106
    chardev_initialize("ns16550_kbd", &kbrd, &ops);
115
    chardev_initialize("ns16550_kbd", &kbrd, &ops);
107
    stdin = &kbrd;
116
    stdin = &kbrd;
108
   
117
   
109
    ns16550.devno = devno;
118
    ns16550.devno = devno;
110
    ns16550.reg = (uint8_t *) vaddr;
119
    ns16550.reg = (uint8_t *) vaddr;
111
   
120
   
112
    irq_initialize(&ns16550_irq);
121
    irq_initialize(&ns16550_irq);
113
    ns16550_irq.devno = devno;
122
    ns16550_irq.devno = devno;
114
    ns16550_irq.inr = inr;
123
    ns16550_irq.inr = inr;
115
    ns16550_irq.claim = ns16550_claim;
124
    ns16550_irq.claim = ns16550_claim;
116
    ns16550_irq.handler = ns16550_irq_handler;
125
    ns16550_irq.handler = ns16550_irq_handler;
117
    irq_register(&ns16550_irq);
126
    irq_register(&ns16550_irq);
118
   
127
   
119
    sysinfo_set_item_val("kbd", NULL, true);
128
    sysinfo_set_item_val("kbd", NULL, true);
120
    sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
129
    sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
121
    sysinfo_set_item_val("kbd.devno", NULL, devno);
130
    sysinfo_set_item_val("kbd.devno", NULL, devno);
122
    sysinfo_set_item_val("kbd.inr", NULL, inr);
131
    sysinfo_set_item_val("kbd.inr", NULL, inr);
123
    sysinfo_set_item_val("kbd.address.virtual", NULL, vaddr);
132
    sysinfo_set_item_val("kbd.address.virtual", NULL, vaddr);
124
   
133
   
125
    ns16550_grab();
134
    ns16550_grab();
126
}
135
}
127
 
136
 
128
/** Process ns16550 interrupt. */
137
/** Process ns16550 interrupt. */
129
void ns16550_interrupt(void)
138
void ns16550_interrupt(void)
130
{
139
{
131
    /* TODO
140
    /* TODO
132
     *
141
     *
133
     * ns16550 works in the polled mode so far.
142
     * ns16550 works in the polled mode so far.
134
     */
143
     */
135
}
144
}
136
 
145
 
137
/* Called from getc(). */
146
/* Called from getc(). */
138
void ns16550_resume(chardev_t *d)
147
void ns16550_resume(chardev_t *d)
139
{
148
{
140
}
149
}
141
 
150
 
142
/* Called from getc(). */
151
/* Called from getc(). */
143
void ns16550_suspend(chardev_t *d)
152
void ns16550_suspend(chardev_t *d)
144
{
153
{
145
}
154
}
146
 
155
 
147
char ns16550_key_read(chardev_t *d)
156
char ns16550_key_read(chardev_t *d)
148
{
157
{
149
    char ch;   
158
    char ch;   
150
 
159
 
151
    while(!(ch = active_read_buff_read())) {
160
    while(!(ch = active_read_buff_read())) {
152
        uint8_t x;
161
        uint8_t x;
153
        while (!(ns16550_lsr_read(&ns16550) & LSR_DATA_READY))
162
        while (!(ns16550_lsr_read(&ns16550) & LSR_DATA_READY))
154
            ;
163
            ;
155
        x = ns16550_rbr_read(&ns16550);
164
        x = ns16550_rbr_read(&ns16550);
156
        if (x != IGNORE_CODE) {
165
        if (x != IGNORE_CODE) {
157
            if (x & KEY_RELEASE)
166
            if (x & KEY_RELEASE)
158
                key_released(x ^ KEY_RELEASE);
167
                key_released(x ^ KEY_RELEASE);
159
            else
168
            else
160
                active_read_key_pressed(x);
169
                active_read_key_pressed(x);
161
        }
170
        }
162
    }
171
    }
163
    return ch;
172
    return ch;
164
}
173
}
165
 
174
 
166
/** Poll for key press and release events.
175
/** Poll for key press and release events.
167
 *
176
 *
168
 * This function can be used to implement keyboard polling.
177
 * This function can be used to implement keyboard polling.
169
 */
178
 */
170
void ns16550_poll(void)
179
void ns16550_poll(void)
171
{
180
{
172
    ipl_t ipl;
181
    ipl_t ipl;
173
 
182
 
174
    ipl = interrupts_disable();
183
    ipl = interrupts_disable();
175
    spinlock_lock(&ns16550_irq.lock);
184
    spinlock_lock(&ns16550_irq.lock);
176
 
185
 
177
    if (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) {
186
    if (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) {
178
        if (ns16550_irq.notif_cfg.notify && ns16550_irq.notif_cfg.answerbox) {
187
        if (ns16550_irq.notif_cfg.notify && ns16550_irq.notif_cfg.answerbox) {
179
            /*
188
            /*
180
             * Send IPC notification.
189
             * Send IPC notification.
181
             */
190
             */
182
            ipc_irq_send_notif(&ns16550_irq);
191
            ipc_irq_send_notif(&ns16550_irq);
183
            spinlock_unlock(&ns16550_irq.lock);
192
            spinlock_unlock(&ns16550_irq.lock);
184
            interrupts_restore(ipl);
193
            interrupts_restore(ipl);
185
            return;
194
            return;
186
        }
195
        }
187
    }
196
    }
188
 
197
 
189
    spinlock_unlock(&ns16550_irq.lock);
198
    spinlock_unlock(&ns16550_irq.lock);
190
    interrupts_restore(ipl);
199
    interrupts_restore(ipl);
191
 
200
 
192
    while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) {
201
    while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) {
193
        uint8_t x;
202
        uint8_t x;
194
       
203
       
195
        x = ns16550_rbr_read(&ns16550);
204
        x = ns16550_rbr_read(&ns16550);
196
        if (x != IGNORE_CODE) {
205
        if (x != IGNORE_CODE) {
197
            if (x & KEY_RELEASE)
206
            if (x & KEY_RELEASE)
198
                key_released(x ^ KEY_RELEASE);
207
                key_released(x ^ KEY_RELEASE);
199
            else
208
            else
200
                key_pressed(x);
209
                key_pressed(x);
201
        }
210
        }
202
    }
211
    }
203
}
212
}
204
 
213
 
205
irq_ownership_t ns16550_claim(void)
214
irq_ownership_t ns16550_claim(void)
206
{
215
{
207
    return (ns16550_lsr_read(&ns16550) & LSR_DATA_READY);
216
    return (ns16550_lsr_read(&ns16550) & LSR_DATA_READY);
208
}
217
}
209
 
218
 
210
void ns16550_irq_handler(irq_t *irq, void *arg, ...)
219
void ns16550_irq_handler(irq_t *irq, void *arg, ...)
211
{
220
{
212
    panic("Not yet implemented, ns16550 works in polled mode.\n");
221
    panic("Not yet implemented, ns16550 works in polled mode.\n");
213
}
222
}
214
 
223
 
215
/** @}
224
/** @}
216
 */
225
 */
217
 
226