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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 <arch/interrupt.h> |
44 | #include <arch/interrupt.h> |
44 | #include <arch/drivers/kbd.h> |
45 | #include <arch/drivers/kbd.h> |
45 | #include <arch/drivers/fhc.h> |
46 | #include <arch/drivers/fhc.h> |
46 | #include <cpu.h> |
47 | #include <cpu.h> |
47 | #include <arch/asm.h> |
48 | #include <arch/asm.h> |
48 | #include <arch.h> |
49 | #include <arch.h> |
49 | #include <typedefs.h> |
50 | #include <typedefs.h> |
50 | #include <console/chardev.h> |
51 | #include <console/chardev.h> |
51 | #include <console/console.h> |
52 | #include <console/console.h> |
52 | #include <interrupt.h> |
53 | #include <interrupt.h> |
53 | #include <sysinfo/sysinfo.h> |
54 | #include <sysinfo/sysinfo.h> |
54 | #include <print.h> |
55 | #include <print.h> |
55 | 56 | ||
56 | /* |
57 | /* |
57 | * These codes read from z8530 data register are silently ignored. |
58 | * These codes read from z8530 data register are silently ignored. |
58 | */ |
59 | */ |
59 | #define IGNORE_CODE 0x7f /* all keys up */ |
60 | #define IGNORE_CODE 0x7f /* all keys up */ |
60 | 61 | ||
61 | bool z8530_belongs_to_kernel = true; |
- | |
62 | - | ||
63 | static z8530_t z8530; /**< z8530 device structure. */ |
62 | static z8530_t z8530; /**< z8530 device structure. */ |
64 | static irq_t z8530_irq; /**< z8530's IRQ. */ |
63 | static irq_t z8530_irq; /**< z8530's IRQ. */ |
65 | 64 | ||
66 | static void z8530_suspend(chardev_t *); |
65 | static void z8530_suspend(chardev_t *); |
67 | static void z8530_resume(chardev_t *); |
66 | static void z8530_resume(chardev_t *); |
68 | 67 | ||
69 | static chardev_operations_t ops = { |
68 | static chardev_operations_t ops = { |
70 | .suspend = z8530_suspend, |
69 | .suspend = z8530_suspend, |
71 | .resume = z8530_resume, |
70 | .resume = z8530_resume, |
72 | .read = z8530_key_read |
71 | .read = z8530_key_read |
73 | }; |
72 | }; |
74 | 73 | ||
75 | void z8530_wait(void); |
- | |
76 | - | ||
77 | /** Initialize keyboard and service interrupts using kernel routine */ |
74 | /** Initialize keyboard and service interrupts using kernel routine. */ |
78 | void z8530_grab(void) |
75 | void z8530_grab(void) |
79 | { |
76 | { |
80 | z8530_belongs_to_kernel = true; |
- | |
81 | } |
77 | } |
82 | 78 | ||
83 | /** Resume the former interrupt vector */ |
79 | /** Resume the former IPC notification behavior. */ |
84 | void z8530_release(void) |
80 | void z8530_release(void) |
85 | { |
81 | { |
86 | z8530_belongs_to_kernel = false; |
- | |
87 | } |
82 | } |
88 | 83 | ||
89 | /** Initialize z8530. */ |
84 | /** Initialize z8530. */ |
90 | void z8530_init(devno_t devno, inr_t inr, uintptr_t vaddr) |
85 | void z8530_init(devno_t devno, inr_t inr, uintptr_t vaddr) |
91 | { |
86 | { |
92 | chardev_initialize("z8530_kbd", &kbrd, &ops); |
87 | chardev_initialize("z8530_kbd", &kbrd, &ops); |
93 | stdin = &kbrd; |
88 | stdin = &kbrd; |
94 | 89 | ||
95 | z8530.devno = devno; |
90 | z8530.devno = devno; |
96 | z8530.reg = (uint8_t *) vaddr; |
91 | z8530.reg = (uint8_t *) vaddr; |
97 | 92 | ||
98 | irq_initialize(&z8530_irq); |
93 | irq_initialize(&z8530_irq); |
99 | z8530_irq.devno = devno; |
94 | z8530_irq.devno = devno; |
100 | z8530_irq.inr = inr; |
95 | z8530_irq.inr = inr; |
101 | z8530_irq.claim = z8530_claim; |
96 | z8530_irq.claim = z8530_claim; |
102 | z8530_irq.handler = z8530_irq_handler; |
97 | z8530_irq.handler = z8530_irq_handler; |
103 | irq_register(&z8530_irq); |
98 | irq_register(&z8530_irq); |
104 | 99 | ||
105 | sysinfo_set_item_val("kbd", NULL, true); |
100 | sysinfo_set_item_val("kbd", NULL, true); |
106 | sysinfo_set_item_val("kbd.devno", NULL, devno); |
101 | sysinfo_set_item_val("kbd.devno", NULL, devno); |
107 | sysinfo_set_item_val("kbd.inr", NULL, inr); |
102 | sysinfo_set_item_val("kbd.inr", NULL, inr); |
108 | sysinfo_set_item_val("kbd.address.virtual", NULL, vaddr); |
103 | sysinfo_set_item_val("kbd.address.virtual", NULL, vaddr); |
109 | 104 | ||
110 | (void) z8530_read_a(&z8530, RR8); |
105 | (void) z8530_read_a(&z8530, RR8); |
111 | 106 | ||
112 | /* |
107 | /* |
113 | * Clear any pending TX interrupts or we never manage |
108 | * Clear any pending TX interrupts or we never manage |
114 | * to set FHC UART interrupt state to idle. |
109 | * to set FHC UART interrupt state to idle. |
115 | */ |
110 | */ |
116 | z8530_write_a(&z8530, WR0, WR0_TX_IP_RST); |
111 | z8530_write_a(&z8530, WR0, WR0_TX_IP_RST); |
117 | 112 | ||
118 | z8530_write_a(&z8530, WR1, WR1_IARCSC); /* interrupt on all characters */ |
113 | z8530_write_a(&z8530, WR1, WR1_IARCSC); /* interrupt on all characters */ |
119 | 114 | ||
120 | /* 8 bits per character and enable receiver */ |
115 | /* 8 bits per character and enable receiver */ |
121 | z8530_write_a(&z8530, WR3, WR3_RX8BITSCH | WR3_RX_ENABLE); |
116 | z8530_write_a(&z8530, WR3, WR3_RX8BITSCH | WR3_RX_ENABLE); |
122 | 117 | ||
123 | z8530_write_a(&z8530, WR9, WR9_MIE); /* Master Interrupt Enable. */ |
118 | z8530_write_a(&z8530, WR9, WR9_MIE); /* Master Interrupt Enable. */ |
124 | } |
119 | } |
125 | 120 | ||
126 | /** Process z8530 interrupt. |
121 | /** Process z8530 interrupt. |
127 | * |
122 | * |
128 | * @param n Interrupt vector. |
123 | * @param n Interrupt vector. |
129 | * @param istate Interrupted state. |
124 | * @param istate Interrupted state. |
130 | */ |
125 | */ |
131 | void z8530_interrupt(void) |
126 | void z8530_interrupt(void) |
132 | { |
127 | { |
133 | z8530_poll(); |
128 | z8530_poll(); |
134 | } |
129 | } |
135 | 130 | ||
136 | /** Wait until the controller reads its data. */ |
- | |
137 | void z8530_wait(void) { |
- | |
138 | } |
- | |
139 | - | ||
140 | /* Called from getc(). */ |
131 | /* Called from getc(). */ |
141 | void z8530_resume(chardev_t *d) |
132 | void z8530_resume(chardev_t *d) |
142 | { |
133 | { |
143 | } |
134 | } |
144 | 135 | ||
145 | /* Called from getc(). */ |
136 | /* Called from getc(). */ |
146 | void z8530_suspend(chardev_t *d) |
137 | void z8530_suspend(chardev_t *d) |
147 | { |
138 | { |
148 | } |
139 | } |
149 | 140 | ||
150 | char z8530_key_read(chardev_t *d) |
141 | char z8530_key_read(chardev_t *d) |
151 | { |
142 | { |
152 | char ch; |
143 | char ch; |
153 | 144 | ||
154 | while(!(ch = active_read_buff_read())) { |
145 | while(!(ch = active_read_buff_read())) { |
155 | uint8_t x; |
146 | uint8_t x; |
156 | while (!(z8530_read_a(&z8530, RR0) & RR0_RCA)) |
147 | while (!(z8530_read_a(&z8530, RR0) & RR0_RCA)) |
157 | ; |
148 | ; |
158 | x = z8530_read_a(&z8530, RR8); |
149 | x = z8530_read_a(&z8530, RR8); |
159 | if (x != IGNORE_CODE) { |
150 | if (x != IGNORE_CODE) { |
160 | if (x & KEY_RELEASE) |
151 | if (x & KEY_RELEASE) |
161 | key_released(x ^ KEY_RELEASE); |
152 | key_released(x ^ KEY_RELEASE); |
162 | else |
153 | else |
163 | active_read_key_pressed(x); |
154 | active_read_key_pressed(x); |
164 | } |
155 | } |
165 | } |
156 | } |
166 | return ch; |
157 | return ch; |
167 | } |
158 | } |
168 | 159 | ||
169 | /** Poll for key press and release events. |
160 | /** Poll for key press and release events. |
170 | * |
161 | * |
171 | * This function can be used to implement keyboard polling. |
162 | * This function can be used to implement keyboard polling. |
172 | */ |
163 | */ |
173 | void z8530_poll(void) |
164 | void z8530_poll(void) |
174 | { |
165 | { |
175 | uint8_t x; |
166 | uint8_t x; |
176 | 167 | ||
177 | while (z8530_read_a(&z8530, RR0) & RR0_RCA) { |
168 | while (z8530_read_a(&z8530, RR0) & RR0_RCA) { |
178 | x = z8530_read_a(&z8530, RR8); |
169 | x = z8530_read_a(&z8530, RR8); |
179 | if (x != IGNORE_CODE) { |
170 | if (x != IGNORE_CODE) { |
180 | if (x & KEY_RELEASE) |
171 | if (x & KEY_RELEASE) |
181 | key_released(x ^ KEY_RELEASE); |
172 | key_released(x ^ KEY_RELEASE); |
182 | else |
173 | else |
183 | key_pressed(x); |
174 | key_pressed(x); |
184 | } |
175 | } |
185 | } |
176 | } |
186 | } |
177 | } |
187 | 178 | ||
188 | irq_ownership_t z8530_claim(void) |
179 | irq_ownership_t z8530_claim(void) |
189 | { |
180 | { |
190 | return (z8530_read_a(&z8530, RR0) & RR0_RCA); |
181 | return (z8530_read_a(&z8530, RR0) & RR0_RCA); |
191 | } |
182 | } |
192 | 183 | ||
193 | void z8530_irq_handler(irq_t *irq, void *arg, ...) |
184 | void z8530_irq_handler(irq_t *irq, void *arg, ...) |
194 | { |
185 | { |
195 | /* |
186 | /* |
196 | * So far, we know we got this interrupt through the FHC. |
187 | * So far, we know we got this interrupt through the FHC. |
197 | * Since we don't have enough information about the FHC and |
188 | * Since we don't have enough documentation about the FHC |
198 | * because the interrupt looks like level sensitive, |
189 | * and because the interrupt looks like level sensitive, |
199 | * we cannot handle it by scheduling one of the level |
190 | * we cannot handle it by scheduling one of the level |
200 | * interrupt traps. Process the interrupt directly. |
191 | * interrupt traps. Process the interrupt directly. |
201 | */ |
192 | */ |
202 | if (z8530_belongs_to_kernel) |
193 | if (irq->notif_cfg.answerbox) |
203 | z8530_interrupt(); |
194 | ipc_irq_send_notif(irq); |
204 | else |
195 | else |
205 | ipc_irq_send_notif(0); |
196 | z8530_interrupt(); |
206 | fhc_clear_interrupt(central_fhc, irq->inr); |
197 | fhc_clear_interrupt(central_fhc, irq->inr); |
207 | } |
198 | } |
208 | 199 | ||
209 | /** @} |
200 | /** @} |
210 | */ |
201 | */ |
211 | 202 |