0,0 → 1,68 |
/* |
* Copyright (C) 2006 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
#include <arch/drivers/cuda.h> |
#include <arch/asm.h> |
|
#define CUDA_PACKET 0x01 |
#define CUDA_POWERDOWN 0x0a |
|
#define RS 0x200 |
#define B (0 * RS) |
#define A (1 * RS) |
#define SR (10 * RS) |
#define ACR (11 * RS) |
|
#define SR_OUT 0x10 |
#define TACK 0x10 |
#define TIP 0x20 |
|
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static volatile __u8 *cuda = (__u8 *) 0xf2000000; |
|
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static void cuda_packet(const __u8 data) |
{ |
cuda[B] = cuda[B] | TIP; |
cuda[ACR] = cuda[ACR] | SR_OUT; |
cuda[SR] = CUDA_PACKET; |
cuda[B] = cuda[B] & ~TIP; |
|
cuda[ACR] = cuda[ACR] | SR_OUT; |
cuda[SR] = data; |
cuda[B] = cuda[B] | TACK; |
|
cuda[B] = cuda[B] | TIP; |
} |
|
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void cpu_halt(void) { |
cuda_packet(CUDA_POWERDOWN); |
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cpu_sleep(); |
} |