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1 | /* |
1 | /* |
2 | * Copyright (c) 2001-2006 Jakub Jermar |
2 | * Copyright (c) 2001-2006 Jakub Jermar |
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 genarch |
29 | /** @addtogroup genarch |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** |
32 | /** |
33 | * @file |
33 | * @file |
34 | * @brief NS 16550 serial port / keyboard driver. |
34 | * @brief NS 16550 serial port / keyboard driver. |
35 | */ |
35 | */ |
36 | 36 | ||
37 | #include <genarch/kbd/ns16550.h> |
37 | #include <genarch/kbd/ns16550.h> |
38 | #include <genarch/kbd/key.h> |
38 | #include <genarch/kbd/key.h> |
39 | #include <genarch/kbd/scanc.h> |
39 | #include <genarch/kbd/scanc.h> |
40 | #include <genarch/kbd/scanc_sun.h> |
40 | #include <genarch/kbd/scanc_sun.h> |
41 | #ifndef ia64 |
- | |
42 | #include <arch/drivers/kbd.h> |
41 | #include <arch/drivers/kbd.h> |
- | 42 | #ifndef ia64 |
|
43 | #include <arch/drivers/ns16550.h> |
43 | #include <arch/drivers/ns16550.h> |
44 | #endif |
44 | #endif |
45 | #include <ddi/irq.h> |
45 | #include <ddi/irq.h> |
46 | #include <ipc/irq.h> |
46 | #include <ipc/irq.h> |
47 | #include <cpu.h> |
47 | #include <cpu.h> |
48 | #include <arch/asm.h> |
48 | #include <arch/asm.h> |
49 | #include <arch.h> |
49 | #include <arch.h> |
50 | #include <console/chardev.h> |
50 | #include <console/chardev.h> |
51 | #include <console/console.h> |
51 | #include <console/console.h> |
52 | #include <interrupt.h> |
52 | #include <interrupt.h> |
53 | #include <arch/interrupt.h> |
53 | #include <arch/interrupt.h> |
54 | #include <sysinfo/sysinfo.h> |
54 | #include <sysinfo/sysinfo.h> |
55 | #include <synch/spinlock.h> |
55 | #include <synch/spinlock.h> |
56 | 56 | ||
57 | #define LSR_DATA_READY 0x01 |
57 | #define LSR_DATA_READY 0x01 |
58 | 58 | ||
59 | /** Structure representing the ns16550. */ |
59 | /** Structure representing the ns16550. */ |
60 | static ns16550_t ns16550; |
60 | static ns16550_t ns16550; |
61 | 61 | ||
62 | /** Structure for ns16550's IRQ. */ |
62 | /** Structure for ns16550's IRQ. */ |
63 | static irq_t ns16550_irq; |
63 | static irq_t ns16550_irq; |
64 | 64 | ||
65 | /* |
65 | /* |
66 | * These codes read from ns16550 data register are silently ignored. |
66 | * These codes read from ns16550 data register are silently ignored. |
67 | */ |
67 | */ |
68 | #define IGNORE_CODE 0x7f /* all keys up */ |
68 | #define IGNORE_CODE 0x7f /* all keys up */ |
69 | 69 | ||
70 | static void ns16550_suspend(chardev_t *); |
70 | static void ns16550_suspend(chardev_t *); |
71 | static void ns16550_resume(chardev_t *); |
71 | static void ns16550_resume(chardev_t *); |
72 | 72 | ||
73 | static chardev_operations_t ops = { |
73 | static chardev_operations_t ops = { |
74 | .suspend = ns16550_suspend, |
74 | .suspend = ns16550_suspend, |
75 | .resume = ns16550_resume, |
75 | .resume = ns16550_resume, |
76 | .read = ns16550_key_read |
76 | .read = ns16550_key_read |
77 | }; |
77 | }; |
78 | 78 | ||
79 | void ns16550_interrupt(void); |
79 | void ns16550_interrupt(void); |
80 | 80 | ||
81 | /** Initialize keyboard and service interrupts using kernel routine */ |
81 | /** Initialize keyboard and service interrupts using kernel routine */ |
82 | void ns16550_grab(void) |
82 | void ns16550_grab(void) |
83 | { |
83 | { |
84 | ipl_t ipl = interrupts_disable(); |
84 | ipl_t ipl = interrupts_disable(); |
85 | 85 | ||
86 | ns16550_ier_write(&ns16550, IER_ERBFI); /* enable receiver interrupt */ |
86 | ns16550_ier_write(&ns16550, IER_ERBFI); /* enable receiver interrupt */ |
87 | 87 | ||
88 | while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) |
88 | while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) |
89 | (void) ns16550_rbr_read(&ns16550); |
89 | (void) ns16550_rbr_read(&ns16550); |
90 | 90 | ||
91 | spinlock_lock(&ns16550_irq.lock); |
91 | spinlock_lock(&ns16550_irq.lock); |
92 | ns16550_irq.notif_cfg.notify = false; |
92 | ns16550_irq.notif_cfg.notify = false; |
93 | spinlock_unlock(&ns16550_irq.lock); |
93 | spinlock_unlock(&ns16550_irq.lock); |
94 | interrupts_restore(ipl); |
94 | interrupts_restore(ipl); |
95 | } |
95 | } |
96 | 96 | ||
97 | /** Resume the former interrupt vector */ |
97 | /** Resume the former interrupt vector */ |
98 | void ns16550_release(void) |
98 | void ns16550_release(void) |
99 | { |
99 | { |
100 | ipl_t ipl = interrupts_disable(); |
100 | ipl_t ipl = interrupts_disable(); |
101 | spinlock_lock(&ns16550_irq.lock); |
101 | spinlock_lock(&ns16550_irq.lock); |
102 | if (ns16550_irq.notif_cfg.answerbox) |
102 | if (ns16550_irq.notif_cfg.answerbox) |
103 | ns16550_irq.notif_cfg.notify = true; |
103 | ns16550_irq.notif_cfg.notify = true; |
104 | spinlock_unlock(&ns16550_irq.lock); |
104 | spinlock_unlock(&ns16550_irq.lock); |
105 | interrupts_restore(ipl); |
105 | interrupts_restore(ipl); |
106 | } |
106 | } |
107 | 107 | ||
108 | /** Initialize ns16550. |
108 | /** Initialize ns16550. |
109 | * |
109 | * |
110 | * @param devno Device number. |
110 | * @param devno Device number. |
- | 111 | * @param port Virtual/IO address of device's registers. |
|
111 | * @param inr Interrupt number. |
112 | * @param inr Interrupt number. |
- | 113 | * @param cir Clear interrupt function. |
|
112 | * @param vaddr Virtual address of device's registers. |
114 | * @param cir_arg First argument to cir. |
113 | */ |
115 | */ |
- | 116 | void |
|
114 | void ns16550_init(devno_t devno, inr_t inr, ioport_t port) |
117 | ns16550_init(devno_t devno, ioport_t port, inr_t inr, cir_t cir, void *cir_arg) |
115 | { |
118 | { |
116 | chardev_initialize("ns16550_kbd", &kbrd, &ops); |
119 | chardev_initialize("ns16550_kbd", &kbrd, &ops); |
117 | stdin = &kbrd; |
120 | stdin = &kbrd; |
118 | 121 | ||
119 | ns16550.devno = devno; |
122 | ns16550.devno = devno; |
120 | ns16550.io_port = port; |
123 | ns16550.io_port = port; |
121 | 124 | ||
122 | irq_initialize(&ns16550_irq); |
125 | irq_initialize(&ns16550_irq); |
123 | ns16550_irq.devno = devno; |
126 | ns16550_irq.devno = devno; |
124 | ns16550_irq.inr = inr; |
127 | ns16550_irq.inr = inr; |
125 | ns16550_irq.claim = ns16550_claim; |
128 | ns16550_irq.claim = ns16550_claim; |
126 | ns16550_irq.handler = ns16550_irq_handler; |
129 | ns16550_irq.handler = ns16550_irq_handler; |
- | 130 | ns16550_irq.cir = cir; |
|
- | 131 | ns16550_irq.cir_arg = cir_arg; |
|
127 | irq_register(&ns16550_irq); |
132 | irq_register(&ns16550_irq); |
- | 133 | ||
- | 134 | ||
- | 135 | while ((ns16550_lsr_read(&ns16550) & LSR_DATA_READY)) |
|
- | 136 | ns16550_rbr_read(&ns16550); |
|
- | 137 | ||
128 | 138 | ||
129 | sysinfo_set_item_val("kbd", NULL, true); |
139 | sysinfo_set_item_val("kbd", NULL, true); |
130 | #ifndef ia64 |
- | |
131 | sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550); |
140 | sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550); |
132 | #endif |
- | |
133 | sysinfo_set_item_val("kbd.devno", NULL, devno); |
141 | sysinfo_set_item_val("kbd.devno", NULL, devno); |
134 | sysinfo_set_item_val("kbd.inr", NULL, inr); |
142 | sysinfo_set_item_val("kbd.inr", NULL, inr); |
135 | sysinfo_set_item_val("kbd.address.virtual", NULL, port); |
143 | sysinfo_set_item_val("kbd.address.virtual", NULL, port); |
- | 144 | sysinfo_set_item_val("kbd.port", NULL, port); |
|
- | 145 | ||
- | 146 | #ifdef CONFIG_NS16550_INTERRUPT_DRIVEN |
|
- | 147 | /* Enable interrupts */ |
|
- | 148 | ns16550_ier_write(&ns16550, IER_ERBFI); |
|
- | 149 | ns16550_mcr_write(&ns16550, MCR_OUT2); |
|
- | 150 | #endif |
|
136 | 151 | ||
137 | #ifdef ia64 |
152 | #ifdef ia64 |
138 | uint8_t c; |
153 | uint8_t c; |
- | 154 | // This switches rbr & ier to mode when accept baudrate constant |
|
139 | c = ns16550_lcr_read(&ns16550); |
155 | c = ns16550_lcr_read(&ns16550); |
140 | ns16550_lcr_write(&ns16550, 0x80 | c); |
156 | ns16550_lcr_write(&ns16550, 0x80 | c); |
141 | ns16550_rbr_write(&ns16550, 0x0c); |
157 | ns16550_rbr_write(&ns16550, 0x0c); |
142 | ns16550_ier_write(&ns16550, 0x00); |
158 | ns16550_ier_write(&ns16550, 0x00); |
143 | ns16550_lcr_write(&ns16550, c); |
159 | ns16550_lcr_write(&ns16550, c); |
144 | #endif |
160 | #endif |
145 | 161 | ||
146 | ns16550_grab(); |
162 | ns16550_grab(); |
147 | } |
163 | } |
148 | 164 | ||
149 | /** Process ns16550 interrupt. */ |
165 | /** Process ns16550 interrupt. */ |
150 | void ns16550_interrupt(void) |
166 | void ns16550_interrupt(void) |
151 | { |
167 | { |
152 | /* TODO |
- | |
153 | * |
- | |
154 | * ns16550 works in the polled mode so far. |
168 | ns16550_poll(); |
155 | */ |
- | |
156 | } |
169 | } |
157 | 170 | ||
158 | /* Called from getc(). */ |
171 | /* Called from getc(). */ |
159 | void ns16550_resume(chardev_t *d) |
172 | void ns16550_resume(chardev_t *d) |
160 | { |
173 | { |
161 | } |
174 | } |
162 | 175 | ||
163 | /* Called from getc(). */ |
176 | /* Called from getc(). */ |
164 | void ns16550_suspend(chardev_t *d) |
177 | void ns16550_suspend(chardev_t *d) |
165 | { |
178 | { |
166 | } |
179 | } |
167 | 180 | ||
168 | 181 | ||
169 | char ns16550_key_read(chardev_t *d) |
182 | char ns16550_key_read(chardev_t *d) |
170 | { |
183 | { |
171 | char ch; |
184 | char ch; |
172 | 185 | ||
173 | while(!(ch = active_read_buff_read())) { |
186 | while(!(ch = active_read_buff_read())) { |
174 | uint8_t x; |
187 | uint8_t x; |
175 | while (!(ns16550_lsr_read(&ns16550) & LSR_DATA_READY)) |
188 | while (!(ns16550_lsr_read(&ns16550) & LSR_DATA_READY)) |
176 | ; |
189 | ; |
177 | x = ns16550_rbr_read(&ns16550); |
190 | x = ns16550_rbr_read(&ns16550); |
178 | #ifndef ia64 |
191 | #ifndef ia64 |
179 | if (x != IGNORE_CODE) { |
192 | if (x != IGNORE_CODE) { |
180 | if (x & KEY_RELEASE) |
193 | if (x & KEY_RELEASE) |
181 | key_released(x ^ KEY_RELEASE); |
194 | key_released(x ^ KEY_RELEASE); |
182 | else |
195 | else |
183 | active_read_key_pressed(x); |
196 | active_read_key_pressed(x); |
184 | } |
197 | } |
185 | #else |
198 | #else |
186 | extern chardev_t kbrd; |
199 | extern chardev_t kbrd; |
187 | if(x != 0x0d) { |
200 | if(x != 0x0d) { |
188 | if(x == 0x7f) |
201 | if(x == 0x7f) |
189 | x = '\b'; |
202 | x = '\b'; |
190 | chardev_push_character(&kbrd, x); |
203 | chardev_push_character(&kbrd, x); |
191 | } |
204 | } |
192 | #endif |
205 | #endif |
193 | 206 | ||
194 | } |
207 | } |
195 | return ch; |
208 | return ch; |
196 | } |
209 | } |
197 | 210 | ||
198 | /** Poll for key press and release events. |
211 | /** Poll for key press and release events. |
199 | * |
212 | * |
200 | * This function can be used to implement keyboard polling. |
213 | * This function can be used to implement keyboard polling. |
201 | */ |
214 | */ |
202 | void ns16550_poll(void) |
215 | void ns16550_poll(void) |
203 | { |
216 | { |
- | 217 | #ifndef CONFIG_NS16550_INTERRUPT_DRIVEN |
|
204 | ipl_t ipl; |
218 | ipl_t ipl; |
205 | 219 | ||
206 | ipl = interrupts_disable(); |
220 | ipl = interrupts_disable(); |
207 | spinlock_lock(&ns16550_irq.lock); |
221 | spinlock_lock(&ns16550_irq.lock); |
208 | 222 | ||
209 | if (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) { |
223 | if (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) { |
210 | if (ns16550_irq.notif_cfg.notify && ns16550_irq.notif_cfg.answerbox) { |
224 | if (ns16550_irq.notif_cfg.notify && ns16550_irq.notif_cfg.answerbox) { |
211 | /* |
225 | /* |
212 | * Send IPC notification. |
226 | * Send IPC notification. |
213 | */ |
227 | */ |
214 | ipc_irq_send_notif(&ns16550_irq); |
228 | ipc_irq_send_notif(&ns16550_irq); |
215 | spinlock_unlock(&ns16550_irq.lock); |
229 | spinlock_unlock(&ns16550_irq.lock); |
216 | interrupts_restore(ipl); |
230 | interrupts_restore(ipl); |
217 | return; |
231 | return; |
218 | } |
232 | } |
219 | } |
233 | } |
220 | 234 | ||
221 | spinlock_unlock(&ns16550_irq.lock); |
235 | spinlock_unlock(&ns16550_irq.lock); |
222 | interrupts_restore(ipl); |
236 | interrupts_restore(ipl); |
- | 237 | #endif |
|
223 | 238 | ||
224 | while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) { |
239 | while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) { |
225 | uint8_t x; |
240 | uint8_t x; |
226 | 241 | ||
227 | x = ns16550_rbr_read(&ns16550); |
242 | x = ns16550_rbr_read(&ns16550); |
228 | #ifndef ia64 |
243 | #ifndef ia64 |
229 | if (x != IGNORE_CODE) { |
244 | if (x != IGNORE_CODE) { |
230 | if (x & KEY_RELEASE) |
245 | if (x & KEY_RELEASE) |
231 | key_released(x ^ KEY_RELEASE); |
246 | key_released(x ^ KEY_RELEASE); |
232 | else |
247 | else |
233 | key_pressed(x); |
248 | key_pressed(x); |
234 | } |
249 | } |
235 | #else |
250 | #else |
236 | extern chardev_t kbrd; |
251 | extern chardev_t kbrd; |
237 | if(x != 0x0d) { |
252 | if(x != 0x0d) { |
238 | if (x == 0x7f) |
253 | if (x == 0x7f) |
239 | x = '\b'; |
254 | x = '\b'; |
240 | chardev_push_character(&kbrd, x); |
255 | chardev_push_character(&kbrd, x); |
241 | } |
256 | } |
242 | #endif |
257 | #endif |
243 | 258 | ||
244 | } |
259 | } |
245 | } |
260 | } |
246 | 261 | ||
247 | irq_ownership_t ns16550_claim(void) |
262 | irq_ownership_t ns16550_claim(void) |
248 | { |
263 | { |
249 | return (ns16550_lsr_read(&ns16550) & LSR_DATA_READY); |
264 | return (ns16550_lsr_read(&ns16550) & LSR_DATA_READY); |
250 | } |
265 | } |
251 | 266 | ||
252 | void ns16550_irq_handler(irq_t *irq, void *arg, ...) |
267 | void ns16550_irq_handler(irq_t *irq, void *arg, ...) |
253 | { |
268 | { |
254 | panic("Not yet implemented, ns16550 works in polled mode.\n"); |
269 | if (irq->notif_cfg.notify && irq->notif_cfg.answerbox) |
- | 270 | ipc_irq_send_notif(irq); |
|
- | 271 | else |
|
- | 272 | ns16550_interrupt(); |
|
255 | } |
273 | } |
256 | 274 | ||
257 | /** @} |
275 | /** @} |
258 | */ |
276 | */ |
259 | 277 |