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1 | /* |
1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
2 | * Copyright (C) 2001-2004 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 Zilog 8530 serial port / keyboard driver. |
34 | * @brief Zilog 8530 serial port / keyboard driver. |
35 | */ |
35 | */ |
36 | 36 | ||
37 | #include <genarch/kbd/z8530.h> |
37 | #include <genarch/kbd/z8530.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/z8530.h> |
41 | #include <arch/drivers/z8530.h> |
42 | #include <ddi/irq.h> |
42 | #include <ddi/irq.h> |
43 | #include <ipc/irq.h> |
43 | #include <ipc/irq.h> |
44 | #include <arch/interrupt.h> |
44 | #include <arch/interrupt.h> |
45 | #include <arch/drivers/kbd.h> |
45 | #include <arch/drivers/kbd.h> |
46 | #include <arch/drivers/fhc.h> |
46 | #include <arch/drivers/fhc.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 <typedefs.h> |
50 | #include <typedefs.h> |
51 | #include <console/chardev.h> |
51 | #include <console/chardev.h> |
52 | #include <console/console.h> |
52 | #include <console/console.h> |
53 | #include <interrupt.h> |
53 | #include <interrupt.h> |
54 | #include <sysinfo/sysinfo.h> |
54 | #include <sysinfo/sysinfo.h> |
55 | #include <print.h> |
55 | #include <print.h> |
56 | 56 | ||
57 | /* |
57 | /* |
58 | * These codes read from z8530 data register are silently ignored. |
58 | * These codes read from z8530 data register are silently ignored. |
59 | */ |
59 | */ |
60 | #define IGNORE_CODE 0x7f /* all keys up */ |
60 | #define IGNORE_CODE 0x7f /* all keys up */ |
61 | 61 | ||
62 | static z8530_t z8530; /**< z8530 device structure. */ |
62 | static z8530_t z8530; /**< z8530 device structure. */ |
63 | static irq_t z8530_irq; /**< z8530's IRQ. */ |
63 | static irq_t z8530_irq; /**< z8530's IRQ. */ |
64 | 64 | ||
65 | static ipc_notif_cfg_t saved_notif_cfg; |
65 | static ipc_notif_cfg_t saved_notif_cfg; |
66 | 66 | ||
67 | static void z8530_suspend(chardev_t *); |
67 | static void z8530_suspend(chardev_t *); |
68 | static void z8530_resume(chardev_t *); |
68 | static void z8530_resume(chardev_t *); |
69 | 69 | ||
70 | static chardev_operations_t ops = { |
70 | static chardev_operations_t ops = { |
71 | .suspend = z8530_suspend, |
71 | .suspend = z8530_suspend, |
72 | .resume = z8530_resume, |
72 | .resume = z8530_resume, |
73 | .read = z8530_key_read |
73 | .read = z8530_key_read |
74 | }; |
74 | }; |
75 | 75 | ||
76 | /** Initialize keyboard and service interrupts using kernel routine. */ |
76 | /** Initialize keyboard and service interrupts using kernel routine. */ |
77 | void z8530_grab(void) |
77 | void z8530_grab(void) |
78 | { |
78 | { |
79 | (void) z8530_read_a(&z8530, RR8); |
79 | (void) z8530_read_a(&z8530, RR8); |
80 | 80 | ||
81 | /* |
81 | /* |
82 | * Clear any pending TX interrupts or we never manage |
82 | * Clear any pending TX interrupts or we never manage |
83 | * to set FHC UART interrupt state to idle. |
83 | * to set FHC UART interrupt state to idle. |
84 | */ |
84 | */ |
85 | z8530_write_a(&z8530, WR0, WR0_TX_IP_RST); |
85 | z8530_write_a(&z8530, WR0, WR0_TX_IP_RST); |
86 | 86 | ||
87 | z8530_write_a(&z8530, WR1, WR1_IARCSC); /* interrupt on all characters */ |
87 | z8530_write_a(&z8530, WR1, WR1_IARCSC); /* interrupt on all characters */ |
88 | 88 | ||
89 | /* 8 bits per character and enable receiver */ |
89 | /* 8 bits per character and enable receiver */ |
90 | z8530_write_a(&z8530, WR3, WR3_RX8BITSCH | WR3_RX_ENABLE); |
90 | z8530_write_a(&z8530, WR3, WR3_RX8BITSCH | WR3_RX_ENABLE); |
91 | 91 | ||
92 | z8530_write_a(&z8530, WR9, WR9_MIE); /* Master Interrupt Enable. */ |
92 | z8530_write_a(&z8530, WR9, WR9_MIE); /* Master Interrupt Enable. */ |
93 | 93 | ||
94 | if (z8530_irq.notif_cfg.answerbox) { |
94 | if (z8530_irq.notif_cfg.answerbox) { |
95 | saved_notif_cfg = z8530_irq.notif_cfg; |
95 | saved_notif_cfg = z8530_irq.notif_cfg; |
96 | z8530_irq.notif_cfg.answerbox = NULL; |
96 | z8530_irq.notif_cfg.answerbox = NULL; |
97 | z8530_irq.notif_cfg.code = NULL; |
97 | z8530_irq.notif_cfg.code = NULL; |
98 | z8530_irq.notif_cfg.method = 0; |
98 | z8530_irq.notif_cfg.method = 0; |
99 | z8530_irq.notif_cfg.counter = 0; |
99 | z8530_irq.notif_cfg.counter = 0; |
100 | } |
100 | } |
101 | } |
101 | } |
102 | 102 | ||
103 | /** Resume the former IPC notification behavior. */ |
103 | /** Resume the former IPC notification behavior. */ |
104 | void z8530_release(void) |
104 | void z8530_release(void) |
105 | { |
105 | { |
106 | if (saved_notif_cfg.answerbox) |
106 | if (saved_notif_cfg.answerbox) |
107 | z8530_irq.notif_cfg = saved_notif_cfg; |
107 | z8530_irq.notif_cfg = saved_notif_cfg; |
108 | } |
108 | } |
109 | 109 | ||
110 | /** Initialize z8530. */ |
110 | /** Initialize z8530. */ |
111 | void z8530_init(devno_t devno, inr_t inr, uintptr_t vaddr) |
111 | void z8530_init(devno_t devno, inr_t inr, uintptr_t vaddr) |
112 | { |
112 | { |
113 | chardev_initialize("z8530_kbd", &kbrd, &ops); |
113 | chardev_initialize("z8530_kbd", &kbrd, &ops); |
114 | stdin = &kbrd; |
114 | stdin = &kbrd; |
115 | 115 | ||
116 | z8530.devno = devno; |
116 | z8530.devno = devno; |
117 | z8530.reg = (uint8_t *) vaddr; |
117 | z8530.reg = (uint8_t *) vaddr; |
118 | 118 | ||
119 | irq_initialize(&z8530_irq); |
119 | irq_initialize(&z8530_irq); |
120 | z8530_irq.devno = devno; |
120 | z8530_irq.devno = devno; |
121 | z8530_irq.inr = inr; |
121 | z8530_irq.inr = inr; |
122 | z8530_irq.claim = z8530_claim; |
122 | z8530_irq.claim = z8530_claim; |
123 | z8530_irq.handler = z8530_irq_handler; |
123 | z8530_irq.handler = z8530_irq_handler; |
124 | irq_register(&z8530_irq); |
124 | irq_register(&z8530_irq); |
125 | 125 | ||
126 | sysinfo_set_item_val("kbd", NULL, true); |
126 | sysinfo_set_item_val("kbd", NULL, true); |
- | 127 | sysinfo_set_item_val("kbd.type", NULL, KBD_Z8530); |
|
127 | sysinfo_set_item_val("kbd.devno", NULL, devno); |
128 | sysinfo_set_item_val("kbd.devno", NULL, devno); |
128 | sysinfo_set_item_val("kbd.inr", NULL, inr); |
129 | sysinfo_set_item_val("kbd.inr", NULL, inr); |
129 | sysinfo_set_item_val("kbd.address.virtual", NULL, vaddr); |
130 | sysinfo_set_item_val("kbd.address.virtual", NULL, vaddr); |
130 | 131 | ||
131 | z8530_grab(); |
132 | z8530_grab(); |
132 | } |
133 | } |
133 | 134 | ||
134 | /** Process z8530 interrupt. |
135 | /** Process z8530 interrupt. |
135 | * |
136 | * |
136 | * @param n Interrupt vector. |
137 | * @param n Interrupt vector. |
137 | * @param istate Interrupted state. |
138 | * @param istate Interrupted state. |
138 | */ |
139 | */ |
139 | void z8530_interrupt(void) |
140 | void z8530_interrupt(void) |
140 | { |
141 | { |
141 | z8530_poll(); |
142 | z8530_poll(); |
142 | } |
143 | } |
143 | 144 | ||
144 | /* Called from getc(). */ |
145 | /* Called from getc(). */ |
145 | void z8530_resume(chardev_t *d) |
146 | void z8530_resume(chardev_t *d) |
146 | { |
147 | { |
147 | } |
148 | } |
148 | 149 | ||
149 | /* Called from getc(). */ |
150 | /* Called from getc(). */ |
150 | void z8530_suspend(chardev_t *d) |
151 | void z8530_suspend(chardev_t *d) |
151 | { |
152 | { |
152 | } |
153 | } |
153 | 154 | ||
154 | char z8530_key_read(chardev_t *d) |
155 | char z8530_key_read(chardev_t *d) |
155 | { |
156 | { |
156 | char ch; |
157 | char ch; |
157 | 158 | ||
158 | while(!(ch = active_read_buff_read())) { |
159 | while(!(ch = active_read_buff_read())) { |
159 | uint8_t x; |
160 | uint8_t x; |
160 | while (!(z8530_read_a(&z8530, RR0) & RR0_RCA)) |
161 | while (!(z8530_read_a(&z8530, RR0) & RR0_RCA)) |
161 | ; |
162 | ; |
162 | x = z8530_read_a(&z8530, RR8); |
163 | x = z8530_read_a(&z8530, RR8); |
163 | if (x != IGNORE_CODE) { |
164 | if (x != IGNORE_CODE) { |
164 | if (x & KEY_RELEASE) |
165 | if (x & KEY_RELEASE) |
165 | key_released(x ^ KEY_RELEASE); |
166 | key_released(x ^ KEY_RELEASE); |
166 | else |
167 | else |
167 | active_read_key_pressed(x); |
168 | active_read_key_pressed(x); |
168 | } |
169 | } |
169 | } |
170 | } |
170 | return ch; |
171 | return ch; |
171 | } |
172 | } |
172 | 173 | ||
173 | /** Poll for key press and release events. |
174 | /** Poll for key press and release events. |
174 | * |
175 | * |
175 | * This function can be used to implement keyboard polling. |
176 | * This function can be used to implement keyboard polling. |
176 | */ |
177 | */ |
177 | void z8530_poll(void) |
178 | void z8530_poll(void) |
178 | { |
179 | { |
179 | uint8_t x; |
180 | uint8_t x; |
180 | 181 | ||
181 | while (z8530_read_a(&z8530, RR0) & RR0_RCA) { |
182 | while (z8530_read_a(&z8530, RR0) & RR0_RCA) { |
182 | x = z8530_read_a(&z8530, RR8); |
183 | x = z8530_read_a(&z8530, RR8); |
183 | if (x != IGNORE_CODE) { |
184 | if (x != IGNORE_CODE) { |
184 | if (x & KEY_RELEASE) |
185 | if (x & KEY_RELEASE) |
185 | key_released(x ^ KEY_RELEASE); |
186 | key_released(x ^ KEY_RELEASE); |
186 | else |
187 | else |
187 | key_pressed(x); |
188 | key_pressed(x); |
188 | } |
189 | } |
189 | } |
190 | } |
190 | } |
191 | } |
191 | 192 | ||
192 | irq_ownership_t z8530_claim(void) |
193 | irq_ownership_t z8530_claim(void) |
193 | { |
194 | { |
194 | return (z8530_read_a(&z8530, RR0) & RR0_RCA); |
195 | return (z8530_read_a(&z8530, RR0) & RR0_RCA); |
195 | } |
196 | } |
196 | 197 | ||
197 | void z8530_irq_handler(irq_t *irq, void *arg, ...) |
198 | void z8530_irq_handler(irq_t *irq, void *arg, ...) |
198 | { |
199 | { |
199 | /* |
200 | /* |
200 | * So far, we know we got this interrupt through the FHC. |
201 | * So far, we know we got this interrupt through the FHC. |
201 | * Since we don't have enough documentation about the FHC |
202 | * Since we don't have enough documentation about the FHC |
202 | * and because the interrupt looks like level sensitive, |
203 | * and because the interrupt looks like level sensitive, |
203 | * we cannot handle it by scheduling one of the level |
204 | * we cannot handle it by scheduling one of the level |
204 | * interrupt traps. Process the interrupt directly. |
205 | * interrupt traps. Process the interrupt directly. |
205 | */ |
206 | */ |
206 | if (irq->notif_cfg.answerbox) |
207 | if (irq->notif_cfg.answerbox) |
207 | ipc_irq_send_notif(irq); |
208 | ipc_irq_send_notif(irq); |
208 | else |
209 | else |
209 | z8530_interrupt(); |
210 | z8530_interrupt(); |
210 | fhc_clear_interrupt(central_fhc, irq->inr); |
211 | fhc_clear_interrupt(central_fhc, irq->inr); |
211 | } |
212 | } |
212 | 213 | ||
213 | /** @} |
214 | /** @} |
214 | */ |
215 | */ |
215 | 216 |