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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/fhc.h> |
- | |
42 | #include <arch/drivers/z8530.h> |
41 | #include <arch/drivers/z8530.h> |
43 | #include <arch/interrupt.h> |
42 | #include <arch/interrupt.h> |
44 | #include <arch/drivers/kbd.h> |
43 | #include <arch/drivers/kbd.h> |
45 | #include <cpu.h> |
44 | #include <cpu.h> |
46 | #include <arch/asm.h> |
45 | #include <arch/asm.h> |
47 | #include <arch.h> |
46 | #include <arch.h> |
48 | #include <typedefs.h> |
47 | #include <typedefs.h> |
49 | #include <console/chardev.h> |
48 | #include <console/chardev.h> |
50 | #include <console/console.h> |
49 | #include <console/console.h> |
51 | #include <interrupt.h> |
50 | #include <interrupt.h> |
52 | #include <sysinfo/sysinfo.h> |
51 | #include <sysinfo/sysinfo.h> |
53 | #include <print.h> |
52 | #include <print.h> |
54 | 53 | ||
55 | /* |
54 | /* |
56 | * These codes read from z8530 data register are silently ignored. |
55 | * These codes read from z8530 data register are silently ignored. |
57 | */ |
56 | */ |
58 | #define IGNORE_CODE 0x7f /* all keys up */ |
57 | #define IGNORE_CODE 0x7f /* all keys up */ |
59 | 58 | ||
60 | bool z8530_belongs_to_kernel = true; |
59 | bool z8530_belongs_to_kernel = true; |
61 | 60 | ||
62 | static void z8530_suspend(chardev_t *); |
61 | static void z8530_suspend(chardev_t *); |
63 | static void z8530_resume(chardev_t *); |
62 | static void z8530_resume(chardev_t *); |
64 | 63 | ||
65 | static chardev_operations_t ops = { |
64 | static chardev_operations_t ops = { |
66 | .suspend = z8530_suspend, |
65 | .suspend = z8530_suspend, |
67 | .resume = z8530_resume, |
66 | .resume = z8530_resume, |
68 | .read = z8530_key_read |
67 | .read = z8530_key_read |
69 | }; |
68 | }; |
70 | 69 | ||
71 | void z8530_wait(void); |
70 | void z8530_wait(void); |
72 | 71 | ||
73 | /** Initialize keyboard and service interrupts using kernel routine */ |
72 | /** Initialize keyboard and service interrupts using kernel routine */ |
74 | void z8530_grab(void) |
73 | void z8530_grab(void) |
75 | { |
74 | { |
76 | z8530_belongs_to_kernel = true; |
75 | z8530_belongs_to_kernel = true; |
77 | } |
76 | } |
78 | 77 | ||
79 | /** Resume the former interrupt vector */ |
78 | /** Resume the former interrupt vector */ |
80 | void z8530_release(void) |
79 | void z8530_release(void) |
81 | { |
80 | { |
82 | z8530_belongs_to_kernel = false; |
81 | z8530_belongs_to_kernel = false; |
83 | } |
82 | } |
84 | 83 | ||
85 | /** Initialize z8530. */ |
84 | /** Initialize z8530. */ |
86 | void z8530_init(void) |
85 | void z8530_init(void) |
87 | { |
86 | { |
88 | chardev_initialize("z8530_kbd", &kbrd, &ops); |
87 | chardev_initialize("z8530_kbd", &kbrd, &ops); |
89 | stdin = &kbrd; |
88 | stdin = &kbrd; |
90 | 89 | ||
91 | sysinfo_set_item_val("kbd", NULL, true); |
90 | sysinfo_set_item_val("kbd", NULL, true); |
92 | sysinfo_set_item_val("kbd.irq", NULL, 0); |
91 | sysinfo_set_item_val("kbd.irq", NULL, 0); |
93 | sysinfo_set_item_val("kbd.address.virtual", NULL, (uintptr_t) kbd_virt_address); |
92 | sysinfo_set_item_val("kbd.address.virtual", NULL, (uintptr_t) kbd_virt_address); |
94 | 93 | ||
95 | (void) z8530_read_a(RR8); |
94 | (void) z8530_read_a(RR8); |
96 | 95 | ||
97 | /* |
96 | /* |
98 | * Clear any pending TX interrupts or we never manage |
97 | * Clear any pending TX interrupts or we never manage |
99 | * to set FHC UART interrupt state to idle. |
98 | * to set FHC UART interrupt state to idle. |
100 | */ |
99 | */ |
101 | z8530_write_a(WR0, WR0_TX_IP_RST); |
100 | z8530_write_a(WR0, WR0_TX_IP_RST); |
102 | 101 | ||
103 | z8530_write_a(WR1, WR1_IARCSC); /* interrupt on all characters */ |
102 | z8530_write_a(WR1, WR1_IARCSC); /* interrupt on all characters */ |
104 | 103 | ||
105 | /* 8 bits per character and enable receiver */ |
104 | /* 8 bits per character and enable receiver */ |
106 | z8530_write_a(WR3, WR3_RX8BITSCH | WR3_RX_ENABLE); |
105 | z8530_write_a(WR3, WR3_RX8BITSCH | WR3_RX_ENABLE); |
107 | 106 | ||
108 | z8530_write_a(WR9, WR9_MIE); /* Master Interrupt Enable. */ |
107 | z8530_write_a(WR9, WR9_MIE); /* Master Interrupt Enable. */ |
109 | - | ||
110 | /* |
- | |
111 | * We need to initialize the FireHose Controller, |
- | |
112 | * to which is this z8530 attached. Otherwise |
- | |
113 | * interrupts generated by the z8530 would not |
- | |
114 | * be forwarded to the CPU. |
- | |
115 | */ |
- | |
116 | fhc_init(); |
- | |
117 | } |
108 | } |
118 | 109 | ||
119 | /** Process z8530 interrupt. |
110 | /** Process z8530 interrupt. |
120 | * |
111 | * |
121 | * @param n Interrupt vector. |
112 | * @param n Interrupt vector. |
122 | * @param istate Interrupted state. |
113 | * @param istate Interrupted state. |
123 | */ |
114 | */ |
124 | void z8530_interrupt(void) |
115 | void z8530_interrupt(void) |
125 | { |
116 | { |
126 | z8530_poll(); |
117 | z8530_poll(); |
127 | } |
118 | } |
128 | 119 | ||
129 | /** Wait until the controller reads its data. */ |
120 | /** Wait until the controller reads its data. */ |
130 | void z8530_wait(void) { |
121 | void z8530_wait(void) { |
131 | } |
122 | } |
132 | 123 | ||
133 | /* Called from getc(). */ |
124 | /* Called from getc(). */ |
134 | void z8530_resume(chardev_t *d) |
125 | void z8530_resume(chardev_t *d) |
135 | { |
126 | { |
136 | } |
127 | } |
137 | 128 | ||
138 | /* Called from getc(). */ |
129 | /* Called from getc(). */ |
139 | void z8530_suspend(chardev_t *d) |
130 | void z8530_suspend(chardev_t *d) |
140 | { |
131 | { |
141 | } |
132 | } |
142 | 133 | ||
143 | char z8530_key_read(chardev_t *d) |
134 | char z8530_key_read(chardev_t *d) |
144 | { |
135 | { |
145 | char ch; |
136 | char ch; |
146 | 137 | ||
147 | while(!(ch = active_read_buff_read())) { |
138 | while(!(ch = active_read_buff_read())) { |
148 | uint8_t x; |
139 | uint8_t x; |
149 | while (!(z8530_read_a(RR0) & RR0_RCA)) |
140 | while (!(z8530_read_a(RR0) & RR0_RCA)) |
150 | ; |
141 | ; |
151 | x = z8530_read_a(RR8); |
142 | x = z8530_read_a(RR8); |
152 | if (x != IGNORE_CODE) { |
143 | if (x != IGNORE_CODE) { |
153 | if (x & KEY_RELEASE) |
144 | if (x & KEY_RELEASE) |
154 | key_released(x ^ KEY_RELEASE); |
145 | key_released(x ^ KEY_RELEASE); |
155 | else |
146 | else |
156 | active_read_key_pressed(x); |
147 | active_read_key_pressed(x); |
157 | } |
148 | } |
158 | } |
149 | } |
159 | return ch; |
150 | return ch; |
160 | } |
151 | } |
161 | 152 | ||
162 | /** Poll for key press and release events. |
153 | /** Poll for key press and release events. |
163 | * |
154 | * |
164 | * This function can be used to implement keyboard polling. |
155 | * This function can be used to implement keyboard polling. |
165 | */ |
156 | */ |
166 | void z8530_poll(void) |
157 | void z8530_poll(void) |
167 | { |
158 | { |
168 | uint8_t x; |
159 | uint8_t x; |
169 | 160 | ||
170 | while (z8530_read_a(RR0) & RR0_RCA) { |
161 | while (z8530_read_a(RR0) & RR0_RCA) { |
171 | x = z8530_read_a(RR8); |
162 | x = z8530_read_a(RR8); |
172 | if (x != IGNORE_CODE) { |
163 | if (x != IGNORE_CODE) { |
173 | if (x & KEY_RELEASE) |
164 | if (x & KEY_RELEASE) |
174 | key_released(x ^ KEY_RELEASE); |
165 | key_released(x ^ KEY_RELEASE); |
175 | else |
166 | else |
176 | key_pressed(x); |
167 | key_pressed(x); |
177 | } |
168 | } |
178 | } |
169 | } |
179 | } |
170 | } |
180 | 171 | ||
181 | /** @} |
172 | /** @} |
182 | */ |
173 | */ |
183 | 174 |