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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/chardev.h> |
31 | #include <console/chardev.h> |
| 32 | #include <console/console.h> |
32 | #include <console/console.h> |
| 33 | #include <arch/drivers/pic.h> |
33 | #include <arch/drivers/pic.h> |
| 34 | #include <interrupt.h> |
34 | #include <interrupt.h> |
| 35 | 35 | ||
| 36 | #define CUDA_PACKET 0x01 |
36 | #define CUDA_PACKET 0x01 |
| 37 | #define CUDA_POWERDOWN 0x0a |
37 | #define CUDA_POWERDOWN 0x0a |
| 38 | 38 | ||
| 39 | #define RS 0x200 |
39 | #define RS 0x200 |
| 40 | #define B (0 * RS) |
40 | #define B (0 * RS) |
| 41 | #define A (1 * RS) |
41 | #define A (1 * RS) |
| 42 | #define SR (10 * RS) |
42 | #define SR (10 * RS) |
| 43 | #define ACR (11 * RS) |
43 | #define ACR (11 * RS) |
| 44 | 44 | ||
| 45 | #define SR_OUT 0x10 |
45 | #define SR_OUT 0x10 |
| 46 | #define TACK 0x10 |
46 | #define TACK 0x10 |
| 47 | #define TIP 0x20 |
47 | #define TIP 0x20 |
| 48 | 48 | ||
| 49 | 49 | ||
| 50 | static volatile __u8 *cuda = (__u8 *) 0xf2000000; |
50 | static volatile __u8 *cuda = (__u8 *) 0xf2000000; |
| 51 | 51 | ||
| - | 52 | ||
| - | 53 | /* Called from getc(). */ |
|
| - | 54 | static void cuda_resume(chardev_t *d) |
|
| - | 55 | { |
|
| - | 56 | } |
|
| - | 57 | ||
| - | 58 | ||
| - | 59 | /* Called from getc(). */ |
|
| - | 60 | static void cuda_suspend(chardev_t *d) |
|
| - | 61 | { |
|
| - | 62 | } |
|
| - | 63 | ||
| - | 64 | ||
| - | 65 | static char key_read(chardev_t *d) |
|
| - | 66 | { |
|
| - | 67 | char ch; |
|
| - | 68 | ||
| - | 69 | ch = 0; |
|
| - | 70 | return ch; |
|
| - | 71 | } |
|
| - | 72 | ||
| - | 73 | ||
| - | 74 | static chardev_t kbrd; |
|
| - | 75 | static chardev_operations_t ops = { |
|
| - | 76 | .suspend = cuda_suspend, |
|
| - | 77 | .resume = cuda_resume, |
|
| - | 78 | .read = key_read |
|
| - | 79 | }; |
|
| - | 80 | ||
| 52 | #include <print.h> |
81 | #include <print.h> |
| 53 | static void cuda_irq(int n, istate_t *istate) |
82 | static void cuda_irq(int n, istate_t *istate) |
| 54 | { |
83 | { |
| 55 | printf("Got cuda msg\n"); |
84 | printf("Got cuda msg\n"); |
| 56 | } |
85 | } |
| 57 | 86 | ||
| 58 | void cuda_init(void) |
87 | void cuda_init(void) |
| 59 | { |
88 | { |
| 60 | int_register(CUDA_IRQ, "cuda", cuda_irq); |
89 | int_register(CUDA_IRQ, "cuda", cuda_irq); |
| 61 | pic_enable_interrupt(CUDA_IRQ); |
90 | pic_enable_interrupt(CUDA_IRQ); |
| - | 91 | ||
| - | 92 | chardev_initialize("cuda_kbd", &kbrd, &ops); |
|
| - | 93 | stdin = &kbrd; |
|
| 62 | } |
94 | } |
| 63 | 95 | ||
| 64 | 96 | ||
| 65 | void cuda_packet(const __u8 data) |
97 | void cuda_packet(const __u8 data) |
| 66 | { |
98 | { |
| 67 | cuda[B] = cuda[B] | TIP; |
99 | cuda[B] = cuda[B] | TIP; |
| 68 | cuda[ACR] = cuda[ACR] | SR_OUT; |
100 | cuda[ACR] = cuda[ACR] | SR_OUT; |
| 69 | cuda[SR] = CUDA_PACKET; |
101 | cuda[SR] = CUDA_PACKET; |
| 70 | cuda[B] = cuda[B] & ~TIP; |
102 | cuda[B] = cuda[B] & ~TIP; |
| 71 | 103 | ||
| 72 | cuda[ACR] = cuda[ACR] | SR_OUT; |
104 | cuda[ACR] = cuda[ACR] | SR_OUT; |
| 73 | cuda[SR] = data; |
105 | cuda[SR] = data; |
| 74 | cuda[B] = cuda[B] | TACK; |
106 | cuda[B] = cuda[B] | TACK; |
| 75 | 107 | ||
| 76 | cuda[B] = cuda[B] | TIP; |
108 | cuda[B] = cuda[B] | TIP; |
| 77 | } |
109 | } |
| 78 | 110 | ||
| 79 | 111 | ||
| 80 | void cpu_halt(void) { |
112 | void cpu_halt(void) { |
| 81 | #ifdef CONFIG_POWEROFF |
113 | #ifdef CONFIG_POWEROFF |
| 82 | cuda_packet(CUDA_POWERDOWN); |
114 | cuda_packet(CUDA_POWERDOWN); |
| 83 | #else |
115 | #else |
| 84 | asm volatile ( |
116 | asm volatile ( |
| 85 | "b 0\n" |
117 | "b 0\n" |
| 86 | ); |
118 | ); |
| 87 | #endif |
119 | #endif |
| 88 | cpu_sleep(); |
120 | cpu_sleep(); |
| 89 | } |
121 | } |
| 90 | 122 | ||