Skip to main content

Browse the archive

Revision dbd1003d1252db5973dddf20b24bb0106ac52aa2 authored by Changfeng on 14 May 2021, 07:28:25 UTC, committed by Alex Deucher on 19 May 2021, 22:02:27 UTC 
drm/amdgpu: disable 3DCGCG on picasso/raven1 to avoid compute hang
 
There is problem with 3DCGCG firmware and it will cause compute test
hang on picasso/raven1. It needs to disable 3DCGCG in driver to avoid
compute hang.

Signed-off-by: Changfeng <Changfeng.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
1 parent d537515
Raw File
libchacha.c 
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * The ChaCha stream cipher (RFC7539)
 *
 * Copyright (C) 2015 Martin Willi
 */

#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/module.h>

#include <crypto/algapi.h> // for crypto_xor_cpy
#include <crypto/chacha.h>

void chacha_crypt_generic(u32 *state, u8 *dst, const u8 *src,
			  unsigned int bytes, int nrounds)
{
	/* aligned to potentially speed up crypto_xor() */
	u8 stream[CHACHA_BLOCK_SIZE] __aligned(sizeof(long));

	while (bytes >= CHACHA_BLOCK_SIZE) {
		chacha_block_generic(state, stream, nrounds);
		crypto_xor_cpy(dst, src, stream, CHACHA_BLOCK_SIZE);
		bytes -= CHACHA_BLOCK_SIZE;
		dst += CHACHA_BLOCK_SIZE;
		src += CHACHA_BLOCK_SIZE;
	}
	if (bytes) {
		chacha_block_generic(state, stream, nrounds);
		crypto_xor_cpy(dst, src, stream, bytes);
	}
}
EXPORT_SYMBOL(chacha_crypt_generic);

MODULE_LICENSE("GPL");
back to top