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1 | /* |
1 | /* |
2 | * Copyright (C) 2006 Martin Decky |
2 | * Copyright (C) 2006 Martin Decky |
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 | #include <arch/drivers/cuda.h> |
29 | #include <arch/drivers/cuda.h> |
30 | #include <arch/asm.h> |
30 | #include <arch/asm.h> |
31 | #include <console/console.h> |
31 | #include <console/console.h> |
- | 32 | #include <console/chardev.h> |
|
32 | #include <arch/drivers/pic.h> |
33 | #include <arch/drivers/pic.h> |
33 | #include <sysinfo/sysinfo.h> |
34 | #include <sysinfo/sysinfo.h> |
34 | #include <interrupt.h> |
35 | #include <interrupt.h> |
35 | #include <stdarg.h> |
36 | #include <stdarg.h> |
36 | 37 | ||
37 | #define PACKET_ADB 0x00 |
38 | #define PACKET_ADB 0x00 |
38 | #define PACKET_CUDA 0x01 |
39 | #define PACKET_CUDA 0x01 |
39 | #define PACKET_NULL 0xff |
- | |
40 | 40 | ||
41 | #define CUDA_POWERDOWN 0x0a |
41 | #define CUDA_POWERDOWN 0x0a |
42 | 42 | ||
43 | #define RS 0x200 |
43 | #define RS 0x200 |
44 | #define B (0 * RS) |
44 | #define B (0 * RS) |
45 | #define A (1 * RS) |
45 | #define A (1 * RS) |
46 | #define SR (10 * RS) |
46 | #define SR (10 * RS) |
47 | #define ACR (11 * RS) |
47 | #define ACR (11 * RS) |
48 | 48 | ||
49 | #define SR_OUT 0x10 |
49 | #define SR_OUT 0x10 |
50 | #define TACK 0x10 |
50 | #define TACK 0x10 |
51 | #define TIP 0x20 |
51 | #define TIP 0x20 |
52 | 52 | ||
53 | 53 | ||
54 | static volatile __u8 *cuda = NULL; |
54 | static volatile __u8 *cuda = NULL; |
55 | 55 | ||
56 | 56 | ||
57 | static char lchars[0x80] = { |
57 | static char lchars[0x80] = { |
58 | 'a', 's', 'd', 'f', 'h', 'g', 'z', 'x', 'c', 'v', 0, 'b', 'q', 'w', 'e', 'r', |
58 | 'a', 's', 'd', 'f', 'h', 'g', 'z', 'x', 'c', 'v', 0, 'b', 'q', 'w', 'e', 'r', |
59 | 'y', 't', '1', '2', '3', '4', '6', '5', '=', '9', '7', '-', '8', '0', ']', 'o', |
59 | 'y', 't', '1', '2', '3', '4', '6', '5', '=', '9', '7', '-', '8', '0', ']', 'o', |
60 | 'u', '[', 'i', 'p', 13, 'l', 'j', '\'', 'k', ';', '\\', ',', '/', 'n', 'm', '.', |
60 | 'u', '[', 'i', 'p', 13, 'l', 'j', '\'', 'k', ';', '\\', ',', '/', 'n', 'm', '.', |
61 | 9, 32, '`', 8, 0, 27, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
61 | 9, 32, '`', 8, 0, 27, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
62 | 0, '.', 0, '*', 0, '+', 0, 0, 0, 0, 0, '/', 13, 0, '-', 0, |
62 | 0, '.', 0, '*', 0, '+', 0, 0, 0, 0, 0, '/', 13, 0, '-', 0, |
63 | 0, 0, '0', '1', '2', '3', '4', '5', '6', '7', 0, '8', '9', 0, 0, 0, |
63 | 0, 0, '0', '1', '2', '3', '4', '5', '6', '7', 0, '8', '9', 0, 0, 0, |
64 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
64 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
65 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 |
65 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 |
66 | }; |
66 | }; |
67 | 67 | ||
68 | 68 | ||
69 | static void send_packet(const __u8 kind, index_t count, ...) |
69 | void send_packet(const __u8 kind, index_t count, ...); |
70 | { |
- | |
71 | index_t i; |
- | |
72 | va_list va; |
- | |
73 | - | ||
74 | switch (kind) { |
- | |
75 | case PACKET_NULL: |
- | |
76 | break; |
- | |
77 | default: |
- | |
78 | cuda[B] = cuda[B] | TIP; |
- | |
79 | cuda[ACR] = cuda[ACR] | SR_OUT; |
- | |
80 | cuda[SR] = kind; |
- | |
81 | cuda[B] = cuda[B] & ~TIP; |
- | |
82 | - | ||
83 | va_start(va, count); |
- | |
84 | - | ||
85 | for (i = 0; i < count; i++) { |
- | |
86 | cuda[ACR] = cuda[ACR] | SR_OUT; |
- | |
87 | cuda[SR] = va_arg(va, int); |
- | |
88 | cuda[B] = cuda[B] | TACK; |
- | |
89 | } |
- | |
90 | - | ||
91 | va_end(va); |
- | |
92 | - | ||
93 | cuda[B] = cuda[B] | TIP; |
- | |
94 | } |
- | |
95 | } |
- | |
96 | 70 | ||
97 | 71 | ||
98 | static void receive_packet(__u8 *kind, index_t count, __u8 data[]) |
72 | static void receive_packet(__u8 *kind, index_t count, __u8 data[]) |
99 | { |
73 | { |
100 | cuda[B] = cuda[B] & ~TIP; |
74 | cuda[B] = cuda[B] & ~TIP; |
101 | *kind = cuda[SR]; |
75 | *kind = cuda[SR]; |
102 | 76 | ||
103 | index_t i; |
77 | index_t i; |
104 | for (i = 0; i < count; i++) |
78 | for (i = 0; i < count; i++) |
105 | data[i] = cuda[SR]; |
79 | data[i] = cuda[SR]; |
106 | 80 | ||
107 | cuda[B] = cuda[B] | TIP; |
81 | cuda[B] = cuda[B] | TIP; |
108 | } |
82 | } |
109 | 83 | ||
110 | 84 | ||
111 | /* Called from getc(). */ |
85 | /* Called from getc(). */ |
112 | static void cuda_resume(chardev_t *d) |
86 | static void cuda_resume(chardev_t *d) |
113 | { |
87 | { |
114 | } |
88 | } |
115 | 89 | ||
116 | 90 | ||
117 | /* Called from getc(). */ |
91 | /* Called from getc(). */ |
118 | static void cuda_suspend(chardev_t *d) |
92 | static void cuda_suspend(chardev_t *d) |
119 | { |
93 | { |
120 | } |
94 | } |
121 | 95 | ||
122 | 96 | ||
123 | static char key_read(chardev_t *d) |
97 | static char key_read(chardev_t *d) |
124 | { |
98 | { |
125 | char ch; |
99 | char ch; |
126 | 100 | ||
127 | ch = 0; |
101 | ch = 0; |
128 | return ch; |
102 | return ch; |
129 | } |
103 | } |
130 | 104 | ||
131 | 105 | ||
132 | chardev_t kbrd; |
106 | static chardev_t kbrd; |
133 | static chardev_operations_t ops = { |
107 | static chardev_operations_t ops = { |
134 | .suspend = cuda_suspend, |
108 | .suspend = cuda_suspend, |
135 | .resume = cuda_resume, |
109 | .resume = cuda_resume, |
136 | .read = key_read |
110 | .read = key_read |
137 | }; |
111 | }; |
138 | 112 | ||
139 | 113 | ||
140 | static void cuda_irq(int n, istate_t *istate) |
114 | __u8 cuda_get_scancode(void) |
141 | { |
115 | { |
142 | __u8 kind; |
116 | __u8 kind; |
143 | __u8 data[4]; |
117 | __u8 data[4]; |
144 | 118 | ||
145 | receive_packet(&kind, 4, data); |
119 | receive_packet(&kind, 4, data); |
146 | 120 | ||
147 | if ((kind == PACKET_ADB) && (data[0] == 0x40) && (data[1] == 0x2c)) { |
121 | if ((kind == PACKET_ADB) && (data[0] == 0x40) && (data[1] == 0x2c)) |
148 | __u8 key = data[2]; |
122 | return data[2]; |
149 | 123 | ||
- | 124 | return 0; |
|
- | 125 | } |
|
- | 126 | ||
- | 127 | ||
150 | if ((key & 0x80) != 0x80) |
128 | static void cuda_irq(int n, istate_t *istate) |
- | 129 | { |
|
151 | chardev_push_character(&kbrd, lchars[key & 0x7f]); |
130 | __u8 scancode = cuda_get_scancode(); |
152 | } |
131 | |
- | 132 | if ((scancode != 0) && ((scancode & 0x80) != 0x80)) |
|
- | 133 | chardev_push_character(&kbrd, lchars[scancode & 0x7f]); |
|
153 | } |
134 | } |
154 | 135 | ||
155 | 136 | ||
156 | void cuda_init(__address base, size_t size) |
137 | void cuda_init(__address base, size_t size) |
157 | { |
138 | { |
158 | cuda = (__u8 *) hw_map(base, size); |
139 | cuda = (__u8 *) hw_map(base, size); |
159 | 140 | ||
160 | int_register(CUDA_IRQ, "cuda", cuda_irq); |
141 | int_register(CUDA_IRQ, "cuda", cuda_irq); |
161 | pic_enable_interrupt(CUDA_IRQ); |
142 | pic_enable_interrupt(CUDA_IRQ); |
162 | 143 | ||
163 | chardev_initialize("cuda_kbd", &kbrd, &ops); |
144 | chardev_initialize("cuda_kbd", &kbrd, &ops); |
164 | stdin = &kbrd; |
145 | stdin = &kbrd; |
165 | 146 | ||
166 | sysinfo_set_item_val("cuda", NULL, true); |
147 | sysinfo_set_item_val("cuda", NULL, true); |
167 | sysinfo_set_item_val("cuda.irq", NULL, CUDA_IRQ); |
148 | sysinfo_set_item_val("cuda.irq", NULL, CUDA_IRQ); |
168 | } |
149 | } |
169 | 150 | ||
170 | 151 | ||
- | 152 | void send_packet(const __u8 kind, index_t count, ...) |
|
- | 153 | { |
|
- | 154 | index_t i; |
|
- | 155 | va_list va; |
|
- | 156 | ||
- | 157 | cuda[B] = cuda[B] | TIP; |
|
- | 158 | cuda[ACR] = cuda[ACR] | SR_OUT; |
|
- | 159 | cuda[SR] = kind; |
|
- | 160 | cuda[B] = cuda[B] & ~TIP; |
|
- | 161 | ||
- | 162 | va_start(va, count); |
|
- | 163 | ||
- | 164 | for (i = 0; i < count; i++) { |
|
- | 165 | cuda[ACR] = cuda[ACR] | SR_OUT; |
|
- | 166 | cuda[SR] = va_arg(va, int); |
|
- | 167 | cuda[B] = cuda[B] | TACK; |
|
- | 168 | } |
|
- | 169 | ||
- | 170 | va_end(va); |
|
- | 171 | ||
- | 172 | cuda[B] = cuda[B] | TIP; |
|
- | 173 | } |
|
- | 174 | ||
- | 175 | ||
171 | void cpu_halt(void) { |
176 | void cpu_halt(void) { |
172 | #ifdef CONFIG_POWEROFF |
177 | #ifdef CONFIG_POWEROFF |
173 | send_packet(PACKET_CUDA, 1, CUDA_POWERDOWN); |
178 | send_packet(PACKET_CUDA, 1, CUDA_POWERDOWN); |
174 | #else |
- | |
175 | send_packet(PACKET_NULL, 0); |
- | |
176 | #endif |
179 | #endif |
177 | asm volatile ( |
180 | asm volatile ( |
178 | "b 0\n" |
181 | "b 0\n" |
179 | ); |
182 | ); |
180 | } |
183 | } |
181 | 184 |