Rev 987 | Go to most recent revision | Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
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| 982 | decky | 1 | /* |
| 2 | * Copyright (C) 2006 Martin Decky |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | #include <arch/drivers/cuda.h> |
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| 30 | #include <arch/asm.h> |
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| 31 | |||
| 32 | #define CUDA_PACKET 0x01 |
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| 33 | #define CUDA_POWERDOWN 0x0a |
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| 34 | |||
| 35 | #define RS 0x200 |
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| 36 | #define B (0 * RS) |
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| 37 | #define A (1 * RS) |
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| 38 | #define SR (10 * RS) |
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| 39 | #define ACR (11 * RS) |
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| 40 | |||
| 41 | #define SR_OUT 0x10 |
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| 42 | #define TACK 0x10 |
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| 43 | #define TIP 0x20 |
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| 44 | |||
| 45 | |||
| 46 | static volatile __u8 *cuda = (__u8 *) 0xf2000000; |
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| 47 | |||
| 48 | |||
| 49 | static void cuda_packet(const __u8 data) |
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| 50 | { |
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| 51 | cuda[B] = cuda[B] | TIP; |
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| 52 | cuda[ACR] = cuda[ACR] | SR_OUT; |
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| 53 | cuda[SR] = CUDA_PACKET; |
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| 54 | cuda[B] = cuda[B] & ~TIP; |
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| 55 | |||
| 56 | cuda[ACR] = cuda[ACR] | SR_OUT; |
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| 57 | cuda[SR] = data; |
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| 58 | cuda[B] = cuda[B] | TACK; |
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| 59 | |||
| 60 | cuda[B] = cuda[B] | TIP; |
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| 61 | } |
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| 62 | |||
| 63 | |||
| 64 | void cpu_halt(void) { |
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| 65 | cuda_packet(CUDA_POWERDOWN); |
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| 66 | |||
| 67 | cpu_sleep(); |
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| 68 | } |