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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: |
Line 37... | Line 37... | ||
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); |
Line 68... | Line 79... | ||
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 | { |
Line 106... | Line 119... | ||
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 | { |
Line 135... | Line 149... | ||
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; |
Line 150... | Line 164... | ||
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 | */ |