64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
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/*
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* PVA bit manipulation header
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*
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* Copyright (c) 2016 NVIDIA Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _PVA_BIT_H_
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#define _PVA_BIT_H_
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#include <linux/bitops.h>
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/*
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* Bit manipulation macros
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*/
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/*
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* 16-bits
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*/
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#define PVA_BIT16(_b_) (((_b_) < 16) ? ((uint16_t)1U << (_b_)) : (uint16_t)0U)
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#define PVA_MASK16(_msb_, _lsb_) \
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((PVA_BIT16(_msb_ + 1) - 1U) & ~(PVA_BIT16(_lsb_) - 1U))
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#define PVA_EXTRACT16(_x_, _msb_, _lsb_, _type_) \
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((_type_)((_x_ & PVA_MASK16(_msb_, _lsb_)) >> _lsb_))
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#define PVA_INSERT16(_x_, _msb_, _lsb_) \
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((((uint16_t)_x_) << _lsb_) & PVA_MASK16(_msb_, _lsb_))
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/*
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* 32-bits
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*/
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#define PVA_BIT(_b_) BIT(_b_)
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#define PVA_MASK(_msb_, _lsb_) GENMASK(_msb_, _lsb_)
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#define PVA_EXTRACT(_x_, _msb_, _lsb_, _type_) \
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((_type_)((_x_ & GENMASK(_msb_, _lsb_)) >> _lsb_))
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#define PVA_INSERT(_x_, _msb_, _lsb_) \
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((((uint32_t)_x_) << _lsb_) & PVA_MASK(_msb_, _lsb_))
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/*
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* 64-bits
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*/
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#define PVA_BIT64(_b_) BIT_ULL(_b_)
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#define PVA_MASK64(_msb_, _lsb_) GENMASK_ULL(_msb_, _lsb_)
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#define PVA_EXTRACT64(_x_, _msb_, _lsb_, _type_) \
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((_type_)((_x_ & GENMASK_ULL(_msb_, _lsb_)) >> _lsb_))
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#define PVA_INSERT64(_x_, _msb_, _lsb_) \
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((((uint64_t)_x_) << _lsb_) & GENMASK_ULL(_msb_, _lsb_))
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#define PVA_PACK64(_l_, _h_) \
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(PVA_INSERT64(_h_, 63, 32) | PVA_INSERT64(_l_, 31, 0))
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#define PVA_HI32(_x_) PVA_EXTRACT64(_x_, 63, 32, uint32_t)
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#define PVA_LOW32(_x_) PVA_EXTRACT64(_x_, 31, 0, uint32_t)
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#endif
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