Rev 2215 | Go to most recent revision | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 2215 | Rev 2245 | ||
---|---|---|---|
1 | /* |
1 | /* |
2 | * Copyright (c) 2005-2007 Ondrej Palkovsky, Michal Kebrt |
2 | * Copyright (c) 2005-2007 Ondrej Palkovsky, Michal Kebrt, Petr Stepan |
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 arm32 |
29 | /** @addtogroup arm32 |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <interrupt.h> |
35 | #include <interrupt.h> |
36 | #include <ipc/irq.h> |
36 | #include <ipc/irq.h> |
37 | #include <console/chardev.h> |
37 | #include <console/chardev.h> |
38 | #include <arch/drivers/gxemul.h> |
38 | #include <arch/drivers/gxemul.h> |
39 | #include <console/console.h> |
39 | #include <console/console.h> |
40 | #include <sysinfo/sysinfo.h> |
40 | #include <sysinfo/sysinfo.h> |
41 | #include <print.h> |
41 | #include <print.h> |
- | 42 | #include <ddi/device.h> |
|
42 | 43 | ||
43 | /** Address of devices. */ |
44 | /** Address of devices. */ |
44 | #define GXEMUL_VIDEORAM 0x10000000 |
45 | #define GXEMUL_VIDEORAM 0x10000000 |
45 | #define GXEMUL_KBD_ADDRESS 0x10000000 |
46 | #define GXEMUL_KBD_ADDRESS 0x10000000 |
- | 47 | #define GXEMUL_RTC 0x15000000 |
|
- | 48 | #define GXEMUL_RTC_FREQ 0x15000100 |
|
- | 49 | #define GXEMUL_RTC_ACK 0x15000110 |
|
- | 50 | #define GXEMUL_IRQC 0x16000000 |
|
- | 51 | #define GXEMUL_IRQC_MASK 0x16000004 |
|
- | 52 | #define GXEMUL_IRQC_UNMASK 0x16000008 |
|
- | 53 | ||
- | 54 | /** IRQs */ |
|
46 | #define GXEMUL_KBD_IRQ 0 |
55 | #define GXEMUL_KBD_IRQ 2 |
- | 56 | #define GXEMUL_TIMER_IRQ 4 |
|
47 | 57 | ||
48 | static chardev_t console; |
58 | static chardev_t console; |
49 | static irq_t gxemul_irq; |
59 | static irq_t gxemul_irq; |
- | 60 | static irq_t gxemul_timer_irq; |
|
50 | 61 | ||
51 | static void gxemul_write(chardev_t *dev, const char ch); |
62 | static void gxemul_write(chardev_t *dev, const char ch); |
52 | static void gxemul_enable(chardev_t *dev); |
63 | static void gxemul_enable(chardev_t *dev); |
53 | static void gxemul_disable(chardev_t *dev); |
64 | static void gxemul_disable(chardev_t *dev); |
54 | static char gxemul_do_read(chardev_t *dev); |
65 | static char gxemul_do_read(chardev_t *dev); |
55 | 66 | ||
56 | static chardev_operations_t gxemul_ops = { |
67 | static chardev_operations_t gxemul_ops = { |
57 | .resume = gxemul_enable, |
68 | .resume = gxemul_enable, |
58 | .suspend = gxemul_disable, |
69 | .suspend = gxemul_disable, |
59 | .write = gxemul_write, |
70 | .write = gxemul_write, |
60 | .read = gxemul_do_read, |
71 | .read = gxemul_do_read, |
61 | }; |
72 | }; |
62 | 73 | ||
63 | /** Putchar that works with gxemul */ |
74 | /** Putchar that works with gxemul */ |
64 | void gxemul_write(chardev_t *dev, const char ch) |
75 | void gxemul_write(chardev_t *dev, const char ch) |
65 | { |
76 | { |
66 | *((char *) GXEMUL_VIDEORAM) = ch; |
77 | *((char *) GXEMUL_VIDEORAM) = ch; |
67 | } |
78 | } |
68 | 79 | ||
69 | /* Called from getc(). */ |
80 | /* Called from getc(). */ |
70 | void gxemul_enable(chardev_t *dev) |
81 | void gxemul_enable(chardev_t *dev) |
71 | { |
82 | { |
72 | // cp0_unmask_int(GXEMUL_KBD_IRQ); |
83 | // cp0_unmask_int(GXEMUL_KBD_IRQ); |
- | 84 | gxemul_irqc_unmask(GXEMUL_KBD_IRQ); |
|
73 | } |
85 | } |
74 | 86 | ||
75 | /* Called from getc(). */ |
87 | /* Called from getc(). */ |
76 | void gxemul_disable(chardev_t *dev) |
88 | void gxemul_disable(chardev_t *dev) |
77 | { |
89 | { |
78 | // cp0_mask_int(GXEMUL_KBD_IRQ); |
90 | // cp0_mask_int(GXEMUL_KBD_IRQ); |
- | 91 | gxemul_irqc_mask(GXEMUL_KBD_IRQ); |
|
79 | } |
92 | } |
80 | 93 | ||
81 | /** Read character using polling, assume interrupts disabled */ |
94 | /** Read character using polling, assume interrupts disabled */ |
82 | static char gxemul_do_read(chardev_t *dev) |
95 | static char gxemul_do_read(chardev_t *dev) |
83 | { |
96 | { |
84 | char ch; |
97 | char ch; |
85 | 98 | ||
86 | while (1) { |
99 | while (1) { |
87 | ch = *((volatile char *) GXEMUL_KBD_ADDRESS); |
100 | ch = *((volatile char *) GXEMUL_KBD_ADDRESS); |
88 | if (ch) { |
101 | if (ch) { |
89 | if (ch == '\r') |
102 | if (ch == '\r') |
90 | return '\n'; |
103 | return '\n'; |
91 | if (ch == 0x7f) |
104 | if (ch == 0x7f) |
92 | return '\b'; |
105 | return '\b'; |
93 | return ch; |
106 | return ch; |
94 | } |
107 | } |
95 | } |
108 | } |
96 | } |
109 | } |
97 | 110 | ||
98 | /** Process keyboard interrupt. */ |
111 | /** Process keyboard interrupt. */ |
99 | static void gxemul_irq_handler(irq_t *irq, void *arg, ...) |
112 | static void gxemul_irq_handler(irq_t *irq, void *arg, ...) |
100 | { |
113 | { |
101 | if ((irq->notif_cfg.notify) && (irq->notif_cfg.answerbox)) |
114 | if ((irq->notif_cfg.notify) && (irq->notif_cfg.answerbox)) |
102 | ipc_irq_send_notif(irq); |
115 | ipc_irq_send_notif(irq); |
103 | else { |
116 | else { |
104 | char ch = 0; |
117 | char ch = 0; |
105 | 118 | ||
106 | ch = *((char *) GXEMUL_KBD_ADDRESS); |
119 | ch = *((char *) GXEMUL_KBD_ADDRESS); |
107 | if (ch =='\r') |
120 | if (ch =='\r') |
108 | ch = '\n'; |
121 | ch = '\n'; |
109 | if (ch == 0x7f) |
122 | if (ch == 0x7f) |
110 | ch = '\b'; |
123 | ch = '\b'; |
111 | chardev_push_character(&console, ch); |
124 | //chardev_push_character(&console, ch); |
- | 125 | printf("%c", ch); |
|
112 | } |
126 | } |
113 | } |
127 | } |
114 | 128 | ||
115 | static irq_ownership_t gxemul_claim(void) |
129 | static irq_ownership_t gxemul_claim(void) |
116 | { |
130 | { |
117 | return IRQ_ACCEPT; |
131 | return IRQ_ACCEPT; |
118 | } |
132 | } |
119 | 133 | ||
120 | void gxemul_kbd_grab(void) |
134 | void gxemul_kbd_grab(void) |
121 | { |
135 | { |
122 | ipl_t ipl = interrupts_disable(); |
136 | ipl_t ipl = interrupts_disable(); |
123 | spinlock_lock(&msim_irq.lock); |
137 | spinlock_lock(&msim_irq.lock); |
124 | gxemul_irq.notif_cfg.notify = false; |
138 | gxemul_irq.notif_cfg.notify = false; |
125 | spinlock_unlock(&gxemul_irq.lock); |
139 | spinlock_unlock(&gxemul_irq.lock); |
126 | interrupts_restore(ipl); |
140 | interrupts_restore(ipl); |
127 | } |
141 | } |
128 | 142 | ||
129 | void gxemul_kbd_release(void) |
143 | void gxemul_kbd_release(void) |
130 | { |
144 | { |
131 | ipl_t ipl = interrupts_disable(); |
145 | ipl_t ipl = interrupts_disable(); |
132 | spinlock_lock(&gxemul_irq.lock); |
146 | spinlock_lock(&gxemul_irq.lock); |
133 | if (gxemul_irq.notif_cfg.answerbox) |
147 | if (gxemul_irq.notif_cfg.answerbox) |
134 | gxemul_irq.notif_cfg.notify = true; |
148 | gxemul_irq.notif_cfg.notify = true; |
135 | spinlock_unlock(&gxemul_irq.lock); |
149 | spinlock_unlock(&gxemul_irq.lock); |
136 | interrupts_restore(ipl); |
150 | interrupts_restore(ipl); |
137 | } |
151 | } |
138 | 152 | ||
139 | 153 | ||
140 | /* Return console object representing msim console */ |
154 | /** Return console object representing msim console */ |
141 | void gxemul_console(devno_t devno) |
155 | void gxemul_console(devno_t devno) |
142 | { |
156 | { |
143 | chardev_initialize("msim_console", &console, &gxemul_ops); |
157 | chardev_initialize("msim_console", &console, &gxemul_ops); |
144 | stdin = &console; |
158 | stdin = &console; |
145 | stdout = &console; |
159 | stdout = &console; |
146 | 160 | ||
147 | irq_initialize(&gxemul_irq); |
161 | irq_initialize(&gxemul_irq); |
148 | gxemul_irq.devno = devno; |
162 | gxemul_irq.devno = devno; |
149 | gxemul_irq.inr = GXEMUL_KBD_IRQ; |
163 | gxemul_irq.inr = GXEMUL_KBD_IRQ; |
150 | gxemul_irq.claim = gxemul_claim; |
164 | gxemul_irq.claim = gxemul_claim; |
151 | gxemul_irq.handler = gxemul_irq_handler; |
165 | gxemul_irq.handler = gxemul_irq_handler; |
152 | irq_register(&gxemul_irq); |
166 | irq_register(&gxemul_irq); |
153 | 167 | ||
154 | // cp0_unmask_int(GXEMUL_KBD_IRQ); |
168 | // cp0_unmask_int(GXEMUL_KBD_IRQ); |
- | 169 | gxemul_irqc_unmask(GXEMUL_KBD_IRQ); |
|
155 | 170 | ||
156 | sysinfo_set_item_val("kbd", NULL, true); |
171 | sysinfo_set_item_val("kbd", NULL, true); |
157 | sysinfo_set_item_val("kbd.devno", NULL, devno); |
172 | sysinfo_set_item_val("kbd.devno", NULL, devno); |
158 | sysinfo_set_item_val("kbd.inr", NULL, GXEMUL_KBD_IRQ); |
173 | sysinfo_set_item_val("kbd.inr", NULL, GXEMUL_KBD_IRQ); |
159 | sysinfo_set_item_val("kbd.address.virtual", NULL, GXEMUL_KBD_ADDRESS); |
174 | sysinfo_set_item_val("kbd.address.virtual", NULL, GXEMUL_KBD_ADDRESS); |
160 | } |
175 | } |
161 | 176 | ||
- | 177 | /** Return the mask of active interrupts. */ |
|
- | 178 | inline uint32_t gxemul_irqc_get_sources(void) |
|
- | 179 | { |
|
- | 180 | return *(uint32_t*) GXEMUL_IRQC; |
|
- | 181 | } |
|
- | 182 | ||
- | 183 | /** Masks interrupt. |
|
- | 184 | * |
|
- | 185 | * @param irq interrupt number |
|
- | 186 | */ |
|
- | 187 | inline void gxemul_irqc_mask(uint32_t irq) |
|
- | 188 | { |
|
- | 189 | *(uint32_t*) GXEMUL_IRQC_MASK = irq; |
|
- | 190 | } |
|
- | 191 | ||
- | 192 | /** Unmasks interrupt. |
|
- | 193 | * |
|
- | 194 | * @param irq interrupt number |
|
- | 195 | */ |
|
- | 196 | inline void gxemul_irqc_unmask(uint32_t irq) |
|
- | 197 | { |
|
- | 198 | *(uint32_t*) GXEMUL_IRQC_UNMASK = irq; |
|
- | 199 | } |
|
- | 200 | ||
- | 201 | ||
- | 202 | /** Starts gxemul Real Time Clock device, which asserts regular interrupts. |
|
- | 203 | * |
|
- | 204 | * @param frequency interrupts frequency (0 disables RTC) |
|
- | 205 | */ |
|
- | 206 | void gxemul_timer_start(uint32_t frequency) |
|
- | 207 | { |
|
- | 208 | *(uint32_t*) GXEMUL_RTC_FREQ = frequency; |
|
- | 209 | } |
|
- | 210 | ||
- | 211 | static irq_ownership_t gxemul_timer_claim(void) |
|
- | 212 | { |
|
- | 213 | return IRQ_ACCEPT; |
|
- | 214 | } |
|
- | 215 | ||
- | 216 | static void gxemul_timer_irq_handler(irq_t *irq, void *arg, ...) |
|
- | 217 | { |
|
- | 218 | /* TODO time drifts ?? |
|
- | 219 | unsigned long drift; |
|
- | 220 | ||
- | 221 | drift = cp0_count_read() - nextcount; |
|
- | 222 | while (drift > cp0_compare_value) { |
|
- | 223 | drift -= cp0_compare_value; |
|
- | 224 | CPU->missed_clock_ticks++; |
|
- | 225 | } |
|
- | 226 | nextcount = cp0_count_read() + cp0_compare_value - drift; |
|
- | 227 | cp0_compare_write(nextcount); |
|
- | 228 | */ |
|
- | 229 | ||
- | 230 | /* |
|
- | 231 | * We are holding a lock which prevents preemption. |
|
- | 232 | * Release the lock, call clock() and reacquire the lock again. |
|
- | 233 | */ |
|
- | 234 | spinlock_unlock(&irq->lock); |
|
- | 235 | //clock(); |
|
- | 236 | puts(" "); |
|
- | 237 | spinlock_lock(&irq->lock); |
|
- | 238 | ||
- | 239 | /* TODO what's that? * |
|
- | 240 | if (virtual_timer_fnc != NULL) |
|
- | 241 | virtual_timer_fnc(); |
|
- | 242 | */ |
|
- | 243 | } |
|
- | 244 | ||
- | 245 | /** |
|
- | 246 | * Initializes and registers timer interrupt handler. |
|
- | 247 | */ |
|
- | 248 | void gxemul_timer_irq_init() |
|
- | 249 | { |
|
- | 250 | irq_initialize(&gxemul_timer_irq); |
|
- | 251 | gxemul_timer_irq.devno = device_assign_devno(); |
|
- | 252 | gxemul_timer_irq.inr = GXEMUL_TIMER_IRQ; |
|
- | 253 | gxemul_timer_irq.claim = gxemul_timer_claim; |
|
- | 254 | gxemul_timer_irq.handler = gxemul_timer_irq_handler; |
|
- | 255 | irq_register(&gxemul_timer_irq); |
|
- | 256 | } |
|
- | 257 | ||
- | 258 | ||
162 | /** @} |
259 | /** @} |
163 | */ |
260 | */ |
164 | 261 |