/* SPDX-License-Identifier: GPL-2.0 * * Copyright 2005-2006 Fen Systems Ltd. * Copyright 2006-2013 Solarflare Communications Inc. * Copyright (C) 2022-2023, Advanced Micro Devices, Inc. */ #ifndef CDX_BITFIELD_H#define CDX_BITFIELD_H #include <linux/bitfield.h> /* Lowest bit numbers and widths */#define CDX_DWORD_LBN 0#define CDX_DWORD_WIDTH 32 /* Specified attribute (e.g. LBN) of the specified field */#define CDX_VAL(field, attribute) field ## _ ## attribute/* Low bit number of the specified field */#define CDX_LOW_BIT(field) CDX_VAL(field, LBN)/* Bit width of the specified field */#define CDX_WIDTH(field) CDX_VAL(field, WIDTH)/* High bit number of the specified field */#define CDX_HIGH_BIT(field) (CDX_LOW_BIT(field) + CDX_WIDTH(field) - 1) /* A doubleword (i.e. 4 byte) datatype - little-endian in HW */struct cdx_dword {	__le32 cdx_u32;}; /* Value expanders for printk */#define CDX_DWORD_VAL(dword)				\	((unsigned int)le32_to_cpu((dword).cdx_u32)) /* * Extract bit field portion [low,high) from the 32-bit little-endian * element which contains bits [min,max) */#define CDX_DWORD_FIELD(dword, field)					\	(FIELD_GET(GENMASK(CDX_HIGH_BIT(field), CDX_LOW_BIT(field)),	\		   le32_to_cpu((dword).cdx_u32))) /* * Creates the portion of the named bit field that lies within the * range [min,max). */#define CDX_INSERT_FIELD(field, value)				\	(FIELD_PREP(GENMASK(CDX_HIGH_BIT(field),		\			    CDX_LOW_BIT(field)), value)) /* * Creates the portion of the named bit fields that lie within the * range [min,max). */#define CDX_INSERT_FIELDS(field1, value1,		\			  field2, value2,		\			  field3, value3,		\			  field4, value4,		\			  field5, value5,		\			  field6, value6,		\			  field7, value7)		\	(CDX_INSERT_FIELD(field1, (value1)) |		\	 CDX_INSERT_FIELD(field2, (value2)) |		\	 CDX_INSERT_FIELD(field3, (value3)) |		\	 CDX_INSERT_FIELD(field4, (value4)) |		\	 CDX_INSERT_FIELD(field5, (value5)) |		\	 CDX_INSERT_FIELD(field6, (value6)) |		\	 CDX_INSERT_FIELD(field7, (value7))) #define CDX_POPULATE_DWORD(dword, ...)					\	(dword).cdx_u32 = cpu_to_le32(CDX_INSERT_FIELDS(__VA_ARGS__)) /* Populate a dword field with various numbers of arguments */#define CDX_POPULATE_DWORD_7 CDX_POPULATE_DWORD#define CDX_POPULATE_DWORD_6(dword, ...) \	CDX_POPULATE_DWORD_7(dword, CDX_DWORD, 0, __VA_ARGS__)#define CDX_POPULATE_DWORD_5(dword, ...) \	CDX_POPULATE_DWORD_6(dword, CDX_DWORD, 0, __VA_ARGS__)#define CDX_POPULATE_DWORD_4(dword, ...) \	CDX_POPULATE_DWORD_5(dword, CDX_DWORD, 0, __VA_ARGS__)#define CDX_POPULATE_DWORD_3(dword, ...) \	CDX_POPULATE_DWORD_4(dword, CDX_DWORD, 0, __VA_ARGS__)#define CDX_POPULATE_DWORD_2(dword, ...) \	CDX_POPULATE_DWORD_3(dword, CDX_DWORD, 0, __VA_ARGS__)#define CDX_POPULATE_DWORD_1(dword, ...) \	CDX_POPULATE_DWORD_2(dword, CDX_DWORD, 0, __VA_ARGS__)#define CDX_SET_DWORD(dword) \	CDX_POPULATE_DWORD_1(dword, CDX_DWORD, 0xffffffff) #endif /* CDX_BITFIELD_H */