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drivers: cache: ncore: Disable snoop filter

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There is hardware bug in NCORE CCU IP and it is causing an issue in the
coherent directory tracking of outstanding cache lines.
The workaround is disabling snoop filter.

Signed-off-by: Dinesh Maniyam <dinesh.maniyam@intel.com>
Reviewed-by: Tien Fong Chee <tien.fong.chee@intel.com>
This commit is contained in:
Dinesh Maniyam 2022-06-01 15:57:25 +08:00 committed by Tien Fong Chee
parent 5474fb894c
commit d192adafeb
1 changed files with 3 additions and 3 deletions
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6
drivers/cache/cache-ncore.c vendored
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@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2019 Intel Corporation <www.intel.com>
* Copyright (C) 2019-2022 Intel Corporation <www.intel.com>
*
*/
#include <dm.h>
@ -81,8 +81,8 @@ static void ncore_ccu_init_dirs(void __iomem *base)
hang();
}
/* Enable snoop filter, a bit per snoop filter */
setbits_le32((ulong)CCU_DIR_REG_ADDR(base, DIRUSFER, i),
/* Disable snoop filter, a bit per snoop filter */
clrbits_le32((ulong)CCU_DIR_REG_ADDR(base, DIRUSFER, i),
BIT(f));
}
}