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| 1 | /* |
1 | /* |
| 2 | * Copyright (C) 2005 Ondrej Palkovsky |
2 | * Copyright (C) 2005 Ondrej Palkovsky |
| 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 mips32 |
29 | /** @addtogroup mips32 |
| 30 | * @{ |
30 | * @{ |
| 31 | */ |
31 | */ |
| 32 | /** @file |
32 | /** @file |
| 33 | */ |
33 | */ |
| 34 | 34 | ||
| 35 | #include <interrupt.h> |
35 | #include <interrupt.h> |
| 36 | #include <arch/cp0.h> |
36 | #include <arch/cp0.h> |
| 37 | #include <arch/drivers/serial.h> |
37 | #include <arch/drivers/serial.h> |
| 38 | #include <console/chardev.h> |
38 | #include <console/chardev.h> |
| 39 | #include <console/console.h> |
39 | #include <console/console.h> |
| - | 40 | #include <ddi/irq.h> |
|
| 40 | 41 | ||
| - | 42 | #define SERIAL_IRQ 2 |
|
| - | 43 | ||
| - | 44 | static irq_t serial_irq; |
|
| 41 | static chardev_t console; |
45 | static chardev_t console; |
| 42 | static serial_t sconf[SERIAL_MAX]; |
46 | static serial_t sconf[SERIAL_MAX]; |
| 43 | static bool kb_enabled; |
47 | static bool kb_enabled; |
| 44 | 48 | ||
| 45 | static void serial_write(chardev_t *d, const char ch) |
49 | static void serial_write(chardev_t *d, const char ch) |
| 46 | { |
50 | { |
| 47 | serial_t *sd = (serial_t *)d->data; |
51 | serial_t *sd = (serial_t *)d->data; |
| 48 | 52 | ||
| 49 | if (ch == '\n') |
53 | if (ch == '\n') |
| 50 | serial_write(d, '\r'); |
54 | serial_write(d, '\r'); |
| 51 | /* Wait until transmit buffer empty */ |
55 | /* Wait until transmit buffer empty */ |
| 52 | while (! (SERIAL_READ_LSR(sd->port) & (1<<TRANSMIT_EMPTY_BIT))) |
56 | while (! (SERIAL_READ_LSR(sd->port) & (1<<TRANSMIT_EMPTY_BIT))) |
| 53 | ; |
57 | ; |
| 54 | SERIAL_WRITE(sd->port, ch); |
58 | SERIAL_WRITE(sd->port, ch); |
| 55 | } |
59 | } |
| 56 | 60 | ||
| 57 | static void serial_enable(chardev_t *d) |
61 | static void serial_enable(chardev_t *d) |
| 58 | { |
62 | { |
| 59 | kb_enabled = true; |
63 | kb_enabled = true; |
| 60 | } |
64 | } |
| 61 | 65 | ||
| 62 | static void serial_disable(chardev_t *d) |
66 | static void serial_disable(chardev_t *d) |
| 63 | { |
67 | { |
| 64 | kb_enabled = false; |
68 | kb_enabled = false; |
| 65 | } |
69 | } |
| 66 | 70 | ||
| 67 | int serial_init(void) |
71 | int serial_init(void) |
| 68 | { |
72 | { |
| 69 | int i = 0; |
73 | int i = 0; |
| 70 | if (SERIAL_READ_LSR(SERIAL_COM1) == 0x60) { |
74 | if (SERIAL_READ_LSR(SERIAL_COM1) == 0x60) { |
| 71 | sconf[i].port = SERIAL_COM1; |
75 | sconf[i].port = SERIAL_COM1; |
| 72 | sconf[i].irq = SERIAL_COM1_IRQ; |
76 | sconf[i].irq = SERIAL_COM1_IRQ; |
| 73 | /* Enable interrupt on available data */ |
77 | /* Enable interrupt on available data */ |
| 74 | i++; |
78 | i++; |
| 75 | } |
79 | } |
| 76 | return i; |
80 | return i; |
| 77 | } |
81 | } |
| 78 | 82 | ||
| 79 | /** Read character from serial port, wait until available */ |
83 | /** Read character from serial port, wait until available */ |
| 80 | static char serial_do_read(chardev_t *dev) |
84 | static char serial_do_read(chardev_t *dev) |
| 81 | { |
85 | { |
| 82 | serial_t *sd = (serial_t *)dev->data; |
86 | serial_t *sd = (serial_t *)dev->data; |
| 83 | char ch; |
87 | char ch; |
| 84 | 88 | ||
| 85 | while (!(SERIAL_READ_LSR(sd->port) & 1)) |
89 | while (!(SERIAL_READ_LSR(sd->port) & 1)) |
| 86 | ; |
90 | ; |
| 87 | ch = SERIAL_READ(sd->port); |
91 | ch = SERIAL_READ(sd->port); |
| 88 | 92 | ||
| 89 | if (ch =='\r') |
93 | if (ch =='\r') |
| 90 | ch = '\n'; |
94 | ch = '\n'; |
| 91 | return ch; |
95 | return ch; |
| 92 | } |
96 | } |
| 93 | 97 | ||
| 94 | - | ||
| 95 | /** Process keyboard interrupt. Does not work in simics? */ |
- | |
| 96 | static void serial_interrupt(int n, void *stack) |
98 | static void serial_handler(void) |
| 97 | { |
99 | { |
| 98 | serial_t *sd = (serial_t *)console.data; |
100 | serial_t *sd = (serial_t *) console.data; |
| 99 | char ch; |
101 | char ch; |
| 100 | 102 | ||
| 101 | if (!(SERIAL_READ_LSR(sd->port) & 1)) |
103 | if (!(SERIAL_READ_LSR(sd->port) & 1)) |
| 102 | return; |
104 | return; |
| 103 | ch = SERIAL_READ(sd->port); |
105 | ch = SERIAL_READ(sd->port); |
| 104 | 106 | ||
| 105 | if (ch =='\r') |
107 | if (ch =='\r') |
| 106 | ch = '\n'; |
108 | ch = '\n'; |
| 107 | chardev_push_character(&console, ch); |
109 | chardev_push_character(&console, ch); |
| 108 | } |
110 | } |
| 109 | 111 | ||
| - | 112 | /** Process keyboard interrupt. Does not work in simics? */ |
|
| - | 113 | static void serial_irq_handler(irq_t *irq, void *arg, ...) |
|
| - | 114 | { |
|
| - | 115 | if ((irq->notif_cfg.notify) && (irq->notif_cfg.answerbox)) |
|
| - | 116 | ipc_irq_send_notif(irq); |
|
| - | 117 | else |
|
| - | 118 | serial_handler(); |
|
| - | 119 | } |
|
| 110 | 120 | ||
| - | 121 | static irq_ownership_t serial_claim(void) |
|
| - | 122 | { |
|
| - | 123 | return IRQ_ACCEPT; |
|
| - | 124 | } |
|
| 111 | 125 | ||
| 112 | static chardev_operations_t serial_ops = { |
126 | static chardev_operations_t serial_ops = { |
| 113 | .resume = serial_enable, |
127 | .resume = serial_enable, |
| 114 | .suspend = serial_disable, |
128 | .suspend = serial_disable, |
| 115 | .write = serial_write, |
129 | .write = serial_write, |
| 116 | .read = serial_do_read |
130 | .read = serial_do_read |
| 117 | }; |
131 | }; |
| 118 | 132 | ||
| 119 | iroutine old_timer; |
- | |
| 120 | /** Do polling on timer interrupt */ |
- | |
| 121 | static void timer_replace(int n, istate_t *istate) |
- | |
| 122 | { |
- | |
| 123 | old_timer(n, istate); |
- | |
| 124 | serial_interrupt(n, istate); |
- | |
| 125 | } |
- | |
| 126 | - | ||
| 127 | void serial_console(void) |
133 | void serial_console(devno_t devno) |
| 128 | { |
134 | { |
| 129 | serial_t *sd = &sconf[0]; |
135 | serial_t *sd = &sconf[0]; |
| 130 | 136 | ||
| 131 | 137 | ||
| 132 | chardev_initialize("serial_console", &console, &serial_ops); |
138 | chardev_initialize("serial_console", &console, &serial_ops); |
| 133 | console.data = sd; |
139 | console.data = sd; |
| 134 | kb_enabled = true; |
140 | kb_enabled = true; |
| - | 141 | ||
| - | 142 | irq_initialize(&serial_irq); |
|
| - | 143 | serial_irq.devno = devno; |
|
| - | 144 | serial_irq.inr = SERIAL_IRQ; |
|
| - | 145 | serial_irq.claim = serial_claim; |
|
| - | 146 | serial_irq.handler = serial_irq_handler; |
|
| - | 147 | irq_register(&serial_irq); |
|
| 135 | 148 | ||
| 136 | // int_register(2, "serial_drvr", serial_interrupt); |
- | |
| 137 | /* I don't know why, but the serial interrupts simply |
149 | /* I don't know why, but the serial interrupts simply |
| 138 | * don't work on simics |
150 | * don't work on simics |
| 139 | */ |
151 | */ |
| 140 | old_timer = int_register(TIMER_IRQ, "serial_drvr_poll", timer_replace); |
152 | timer_fnc = &serial_handler; |
| 141 | 153 | ||
| 142 | stdin = &console; |
154 | stdin = &console; |
| 143 | stdout = &console; |
155 | stdout = &console; |
| 144 | } |
156 | } |
| 145 | 157 | ||
| 146 | /** @} |
158 | /** @} |
| 147 | */ |
159 | */ |
| 148 | 160 | ||