Rev 2089 | Rev 3234 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
575 | palkovsky | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2005 Ondrej Palkovsky |
575 | palkovsky | 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 | |||
1888 | jermar | 29 | /** @addtogroup mips32 |
1702 | cejka | 30 | * @{ |
31 | */ |
||
32 | /** @file |
||
33 | */ |
||
34 | |||
575 | palkovsky | 35 | #include <interrupt.h> |
2089 | decky | 36 | #include <ipc/irq.h> |
575 | palkovsky | 37 | #include <console/chardev.h> |
38 | #include <arch/drivers/msim.h> |
||
39 | #include <arch/cp0.h> |
||
606 | palkovsky | 40 | #include <console/console.h> |
1936 | decky | 41 | #include <sysinfo/sysinfo.h> |
575 | palkovsky | 42 | |
43 | static chardev_t console; |
||
1936 | decky | 44 | static irq_t msim_irq; |
575 | palkovsky | 45 | |
46 | static void msim_write(chardev_t *dev, const char ch); |
||
47 | static void msim_enable(chardev_t *dev); |
||
48 | static void msim_disable(chardev_t *dev); |
||
607 | palkovsky | 49 | static char msim_do_read(chardev_t *dev); |
575 | palkovsky | 50 | |
51 | static chardev_operations_t msim_ops = { |
||
52 | .resume = msim_enable, |
||
53 | .suspend = msim_disable, |
||
607 | palkovsky | 54 | .write = msim_write, |
55 | .read = msim_do_read, |
||
575 | palkovsky | 56 | }; |
57 | |||
58 | /** Putchar that works with MSIM & gxemul */ |
||
59 | void msim_write(chardev_t *dev, const char ch) |
||
60 | { |
||
61 | *((char *) MSIM_VIDEORAM) = ch; |
||
62 | } |
||
63 | |||
64 | /* Called from getc(). */ |
||
65 | void msim_enable(chardev_t *dev) |
||
66 | { |
||
67 | cp0_unmask_int(MSIM_KBD_IRQ); |
||
68 | } |
||
69 | |||
70 | /* Called from getc(). */ |
||
71 | void msim_disable(chardev_t *dev) |
||
72 | { |
||
73 | cp0_mask_int(MSIM_KBD_IRQ); |
||
74 | } |
||
75 | |||
588 | palkovsky | 76 | #include <print.h> |
607 | palkovsky | 77 | /** Read character using polling, assume interrupts disabled */ |
78 | static char msim_do_read(chardev_t *dev) |
||
79 | { |
||
80 | char ch; |
||
81 | |||
82 | while (1) { |
||
83 | ch = *((volatile char *) MSIM_KBD_ADDRESS); |
||
84 | if (ch) { |
||
85 | if (ch == '\r') |
||
86 | return '\n'; |
||
87 | if (ch == 0x7f) |
||
88 | return '\b'; |
||
89 | return ch; |
||
90 | } |
||
91 | } |
||
92 | } |
||
93 | |||
575 | palkovsky | 94 | /** Process keyboard interrupt. */ |
1936 | decky | 95 | static void msim_irq_handler(irq_t *irq, void *arg, ...) |
575 | palkovsky | 96 | { |
1936 | decky | 97 | if ((irq->notif_cfg.notify) && (irq->notif_cfg.answerbox)) |
98 | ipc_irq_send_notif(irq); |
||
99 | else { |
||
100 | char ch = 0; |
||
101 | |||
102 | ch = *((char *) MSIM_KBD_ADDRESS); |
||
103 | if (ch =='\r') |
||
104 | ch = '\n'; |
||
105 | if (ch == 0x7f) |
||
106 | ch = '\b'; |
||
107 | chardev_push_character(&console, ch); |
||
108 | } |
||
575 | palkovsky | 109 | } |
110 | |||
1936 | decky | 111 | static irq_ownership_t msim_claim(void) |
575 | palkovsky | 112 | { |
1936 | decky | 113 | return IRQ_ACCEPT; |
575 | palkovsky | 114 | } |
1474 | palkovsky | 115 | |
116 | void msim_kbd_grab(void) |
||
117 | { |
||
1944 | jermar | 118 | ipl_t ipl = interrupts_disable(); |
119 | spinlock_lock(&msim_irq.lock); |
||
1936 | decky | 120 | msim_irq.notif_cfg.notify = false; |
1944 | jermar | 121 | spinlock_unlock(&msim_irq.lock); |
122 | interrupts_restore(ipl); |
||
1474 | palkovsky | 123 | } |
1936 | decky | 124 | |
1474 | palkovsky | 125 | void msim_kbd_release(void) |
126 | { |
||
1944 | jermar | 127 | ipl_t ipl = interrupts_disable(); |
128 | spinlock_lock(&msim_irq.lock); |
||
1936 | decky | 129 | if (msim_irq.notif_cfg.answerbox) |
130 | msim_irq.notif_cfg.notify = true; |
||
1944 | jermar | 131 | spinlock_unlock(&msim_irq.lock); |
132 | interrupts_restore(ipl); |
||
1474 | palkovsky | 133 | } |
1702 | cejka | 134 | |
1936 | decky | 135 | |
136 | /* Return console object representing msim console */ |
||
137 | void msim_console(devno_t devno) |
||
138 | { |
||
139 | chardev_initialize("msim_console", &console, &msim_ops); |
||
140 | stdin = &console; |
||
141 | stdout = &console; |
||
142 | |||
143 | irq_initialize(&msim_irq); |
||
144 | msim_irq.devno = devno; |
||
145 | msim_irq.inr = MSIM_KBD_IRQ; |
||
146 | msim_irq.claim = msim_claim; |
||
147 | msim_irq.handler = msim_irq_handler; |
||
148 | irq_register(&msim_irq); |
||
149 | |||
150 | cp0_unmask_int(MSIM_KBD_IRQ); |
||
151 | |||
152 | sysinfo_set_item_val("kbd", NULL, true); |
||
153 | sysinfo_set_item_val("kbd.devno", NULL, devno); |
||
154 | sysinfo_set_item_val("kbd.inr", NULL, MSIM_KBD_IRQ); |
||
155 | sysinfo_set_item_val("kbd.address.virtual", NULL, MSIM_KBD_ADDRESS); |
||
156 | } |
||
157 | |||
1888 | jermar | 158 | /** @} |
1702 | cejka | 159 | */ |