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