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